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Ntt Docomo Inc patents
Recent patent applications related to Ntt Docomo Inc. Ntt Docomo Inc is listed as an Agent/Assignee. Note: Ntt Docomo Inc may have other listings under different names/spellings. We're not affiliated with Ntt Docomo Inc, we're just tracking patents.
ARCHIVE: New 2018 2017 2016 2015 2014 2013 2012 2011 2010 2009 | Company Directory "N" | Ntt Docomo Inc-related inventors
Radio communication system and control method
A radio communication system is disclosed that includes at least one user equipment and multiple base stations including a first base station configured to execute radio resource control of the user equipment through a control path and a second base station configured not to execute radio resource control of the user equipment. The system includes multiple gateways, including a first gateway connected with the first base station and a second gateway connected with the second base station, and a switching station that controls the establishment of user paths among nodes.. ... Ntt Docomo Inc
User terminal, radio base station, and radio communication method
According to the present invention, communication is carried out using a transmission time interval (tti) that is suitable for a future radio communication system. A user terminal of the present invention includes a receiving section configured to receive a downlink signal; a transmitting section configured to transmit an uplink signal; and a control section configured to control a transmission time interval (tti) used in reception of the downlink signal and/or used in transmission of the uplink signal. ... Ntt Docomo Inc
User terminal, radio base station, and radio communication method
According to the present invention, appropriate communication can be carried out even if a plurality of services are applied. A user terminal includes a receiving section configured to receive downlink control information (dci) in regard to transmission and/or reception of a transport block (tb); and a control section configured to control, based on the dci, transmission and/or reception of a plurality of tbs in the same cc (component carrier), the same layer and the same tti (transmission time interval).. ... Ntt Docomo Inc
User terminal, radio base station and radio communication method
The present invention is designed so that uplink control signals adequately even when the number of component carriers that can be configured in a user terminal is expanded. The present invention provides a receiving section that receives a dl signal, a transmission section that transmits ul control information, which includes a delivery acknowledgement signal in response to the dl signal, and a control section that controls the transmission of the ul control information, and the control section controls the transmission of the ul control information by using a pucch format, in which a cyclic shift is applied to a first symbol for a demodulation reference signal, and in which the orthogonal code is not applied, or an orthogonal code having a shorter sequence length than the sequence length adopted in existing pucch format 3 is applied, to a second symbol.. ... Ntt Docomo Inc
User apparatus, base station, and communication method
A user apparatus according to an embodiment is provided. The user apparatus communicates with a base station in a wireless communication system. ... Ntt Docomo Inc
Communication control method, communication control device, and communication system
Provided are a communication control method, a communication control device, and a communication system that can appropriately change a device on a network that executes request processing from a terminal. In a node changing device 10, a sequence monitoring unit 12 detects handover of a ue 90. ... Ntt Docomo Inc
Mobile station and mobile communication method
Provided are a mobile station and a mobile communication method in which, when a secondary cell (scell) is established in an unlicensed band, received power in the unlicensed band can be efficiently measured and reported to a radio access network. A ue (100) includes an rssi measurement unit (133) that repeatedly measures rssi in the frequency band of the secondary cell, a report determination unit (140) that determines, based on an rssi measurement result, whether to report the measurement result to the radio access network, and a measurement report unit (150) that reports the measurement result to the radio access network. ... Ntt Docomo Inc
User terminal, radio base station and radio communication method
The present invention is designed so that it is possible to adequately control the transmission power of uplink control channels even when the number of component carriers (ccs) that can be configured per user terminal is expanded more than in existing systems. According to the present invention, a user terminal has a transmission section that transmits an uplink control channel, and a control section that controls the transmission power of the uplink control channel, and the control section controls the transmission power of the uplink control channel based on at least one of the number of resource blocks constituting the format of the uplink control channel and the payload in the format including the cyclic redundancy check (crc) bits.. ... Ntt Docomo Inc
Low-complexity intra prediction for video coding
The present invention provides a unique intra prediction process which improves the efficiency of video coding. H.264/avc uses reference pixels in a horizontal boundary located immediately above a target block to be predicted and reference pixels in a vertical boundary located immediately left of the target block. ... Ntt Docomo Inc
User terminal, radio base station and radio communication method
A user terminal is disclosed including a receiver that receives a downlink signal that is transmitted in repetitions in narrow bands to which frequency hopping is applied, and a processor that specifies a pattern of the applied frequency hopping based on a starting index that indicates a first narrow band in the narrow bands and a frequency offset that is a shift in a frequency direction from the first narrow band. The processor causes the receiver to receive the downlink signal using the specified pattern. ... Ntt Docomo Inc
User terminal, radio base station and radio communication method
A user terminal includes: a reception section that detects instruction information of a reception of a downlink shared channel on a downlink control channel; a transmission section that transmits uplink control information on the reception of the downlink shared channel corresponding to the instruction information; and a control section that determines a pucch (physical uplink control channel) format for transmitting the uplink control information from a plurality of pucch formats including a large-capacity pucch format having a larger capacity than pucch format 3. The control section determines a pucch resource for transmission with the large-capacity pucch format based on the instruction information.. ... Ntt Docomo Inc
User apparatus and timer control method
A user apparatus is provided. The user apparatus communicates with a base station in a mobile communication system. ... Ntt Docomo Inc
User equipment and communication method
A user equipment for communicating with a base station in a radio communication system that supports narrow band communication is disclosed including a receiver that receives, from the base station via a first frequency band, information for identifying a second frequency band. A synchronization signal and broadcast information are transmitted on the first frequency band, and the synchronization signal and the broadcast information are not transmitted on the second frequency band. ... Ntt Docomo Inc
Communication device and communication control method
A module includes a switching request receiving unit configured to receive, when the module is connected with one terminal, a switching request indicating a connection switching to another terminal, an address changing unit configured to change the connection destination address using the reception of the switching request by the switching request receiving unit as a trigger, a connection disconnecting unit configured to forcibly disconnect the connection with the one terminal when the connection destination address is changed by the address changing unit, and a connection process executing unit configured to receive a connection request from the another terminal by the connection destination address changed by the address changing unit after the connection with the one terminal is disconnected by the connection disconnecting unit and to connect with the another terminal.. . ... Ntt Docomo Inc
Sip control apparatus, mobile communication system and emergency call control method
A sip control apparatus is provided. The sip control apparatus is connected to a management apparatus controlling call processing rules in an ip packet network, and controls an emergency call made by a user apparatus. ... Ntt Docomo Inc
Base station, management apparatus and connection method
A base station includes a transceiver and a processor. The processor is configured to: in response to receiving a connection request from user equipment, causes a transceiver to transmit a message to a first management apparatus; and in response to receiving a reroute message to indicate a reroute from a first management apparatus to a second management apparatus, causes the transceiver to transmit non access stratum (nas) information in the reroute message to the second management apparatus. ... Ntt Docomo Inc
User device, signal transmission method, and signal reception method
A user device for a radio communication system supporting device-to-device (d2d) communication is disclosed. The user device includes a transmitter that transmits a d2d signal by mapping a reference signal to a physical channel according to a first mapping configuration or according to a second mapping configuration. ... Ntt Docomo Inc
User equipment
A user equipment that includes a transmission and reception unit configured to transmit and receive a radio signal to and from a base station and a capability information indication unit configured to transmit capability information to the base station. The capability information indicates carrier aggregation (ca) capable carrier combinations as well as bandwidths of the respective carriers. ... Ntt Docomo Inc
Terminal and communication control method
A terminal is provided. The terminal communicates with a base station in a mobile communication system which supports carrier aggregation provided by a first cell and a second cell which uses a subframe whose time interval is shorter than a time interval of a subframe of the first cell. ... Ntt Docomo Inc
User terminal
A user device includes a receiver configured to receive information indicating a ratio between a downlink data signal transmission power for an ofdm (orthogonal frequency division multiplexing) symbol in which a crs (cell-specific reference signal) is not arranged and a downlink data signal transmission power for an ofdm symbol in which a crs is arranged; and a controller configured to calculate a downlink data signal transmission power based on the information.. . ... Ntt Docomo Inc
User apparatus and mac control element transmission method
A user apparatus that communicates with a base station in a mobile communication system that supports uplink carrier aggregation, including: determination means configured to determine, based on assignment information, of an uplink transmission resource, received from the base station, whether a serving cell corresponding to the uplink transmission resource is a cell that uses a licensed spectrum or not; and transmission means configured, if the serving cell is determined to be a cell that uses the licensed spectrum by the determination means, to transmit a mac control element to the base station by the serving cell.. . ... Ntt Docomo Inc
User terminal, radio base station and radio communication method
A user terminal is disclosed that has a receiver that receives transmission acknowledgment information, in response to an uplink data channel in a narrow band in a system band, via a downlink control channel that is transmitted in a starting subframe of a predetermined cycle and a processor that controls retransmission of the uplink data channel based on the transmission acknowledgment information. Further, a radio base station is disclosed that communicates with a user terminal. ... Ntt Docomo Inc
User terminal, radio communication system and radio communication method
The present invention is designed to control the antenna selection in a user terminal adequately even when the user terminal connects with a plurality of radio base stations by employing dual connectivity (dc). A user terminal supports communication which uses dual connectivity with a plurality of radio base stations that each configure a cell group formed with one or more cells, and this user terminal has a transmission section that transmits ul signals to one or a plurality of cell groups, and a control section that controls the antenna selection for transmitting the ul signals, and, when antenna selection for a serving cell (ue transmit antenna selection) is configured, the control section controls the antenna selection expecting that the plurality of cell groups are not configured.. ... Ntt Docomo Inc
User terminal, radio base station, radio communication method and radio communication system
A user terminal is disclosed that connects with a plurality of radio base stations and the decrease of uplink throughput is reduced. A user terminal connects with a plurality of radio base stations including a first radio base station and a second radio base station, and this user terminal has a transmission section that transmits uplink signals to each radio base station, a receiving section that receives terminal-specific information with respect to the first radio base station, related to the maximum transmission power of the uplink signals, and a maximum transmission power setting section that sets the maximum transmission power for the first radio base station based on the terminal-specific information with respect to the first radio base station.. ... Ntt Docomo Inc
User terminal, radio base station and radio communication method
To suppress decrease in throughput even in the case where downlink transmit power is controlled, a user terminal according to one aspect of the present invention has a reception section that receives information on a candidate for downlink transmit power, a generating section that selects a plurality of candidates for downlink transmit power to generate csi (channel state information) on the plurality of candidates for downlink transmit power, and a transmission section that transmits the csi on the plurality of candidates for downlink transmit power.. . ... Ntt Docomo Inc
Multi-band array antenna
A multi-band array antenna comprises m first antenna elements operating in p frequency bands; n second antenna elements operating in q frequency bands; a wilkinson power distributor; one or more filters; and one or more matching circuits. Here, m and n are positive integers satisfying m+n≥3 and any of m=n+1, n=m+1 and m=n; and p and q are positive integers satisfying p≥1, q≥2 and q>p. ... Ntt Docomo Inc
User equipment, base station and communication method
There is provided user equipment for communicating with a base station in a mobile communication system supporting lte including a reception unit configured to receive an indication from the base station to change a sequence number length of an rlc pdu, a re-establishment unit configured to perform re-establishment of an rlc entity upon receiving the indication, and a communication unit configured to use the rlc pdu with the changed sequence number length to communicate with the base station after completion of the re-establishment.. . ... Ntt Docomo Inc
User terminal, radio base station, radio communication system and radio communication method
The present invention is designed so that it is possible to increase the epdcch capacity for transmitting control information that is required in cross-carrier scheduling in enhanced carrier aggregation. A user terminal can communicate with a radio base station using six or more component carriers, and has a control section that exerts control so that, based on one or a plurality of epdcch (enhanced physical downlink control channel) groups configured by the radio base station, and component carrier indices corresponding to each epdcch set group, blind decoding is performed on epdcch sets included in the epdcch set groups, and dci (downlink control information) of component carriers corresponding to the epdcch set groups is detected.. ... Ntt Docomo Inc
Mobile station, base station and radio communication method
The present invention provides a mobile station, a base station and a radio communication method. A mobile station pertaining to the present invention is provided, including a receiving section configured to receive information that indicates at least one reference signal resource and measurement window information that indicates an allocation of a measurement window; a measuring section configured to measure a reference signal, to which precoding has been applied, based on the information that indicates the at least one reference signal resource and the measurement window information, and to generate a measurement result; and a transmitting section configured to transmit the measurement result.. ... Ntt Docomo Inc
Predictive encoding method, predictive encoding device, and predictive encoding program of motion vector, and, predictive decoding method, predictive decoding device, and predictive decoding program of motion vector
A predictive coding system can encode motion vectors by determining a motion vector of a target partition in a frame picture of an encoding target; determining a first motion vector predictor candidate from a motion vector or motion vectors of one or more partitions belonging to a left-neighboring region to the target partition; determining a second motion vector predictor candidate from a motion vector or motion vectors of one or more partitions belonging to an above-neighboring region to the target partition; selecting an optimum motion vector predictor and outputting motion vector predictor indication information to specify the selected optimum motion vector predictor, the optimum motion vector predictor selected based on comparison between one or more motion vector predictor candidates including the first motion vector predictor candidate and the second motion vector predictor candidate, and the motion vector of the target partition; and encoding the motion vector predictor indication information.. . ... Ntt Docomo Inc
User terminal, radio base station and radio communication method
A user terminal is disclosed including a transmitter that transmits delivery acknowledgment signals (ack/nack) in response to downlink (dl) signals transmitted from a plurality of cells, a receiver that receives information about cells to be scheduled, and a processor that controls transmission of the ack/nack based on the information about the cells to be scheduled. Further, a radio base station is disclosed that communicates with a user terminal using a plurality cells, the radio base station including a processor that controls scheduling of downlink (dl) signals transmitted respectively from the plurality of cells; a transmitter that transmits information about cells to be scheduled; and a receiver that receives delivery acknowledgement signals (ack/nack) transmitted from the user terminal based on the information about the cells to be scheduled.. ... Ntt Docomo Inc
Information transmission method, information processing method, base station, and mobile station
An information transmission method used in a base station includes: determining mode indication information regarding reference signals to be transmitted; transmitting the mode indication information to a mobile station; and transmitting the reference signals to the mobile station based on the mode indication information.. . ... Ntt Docomo Inc
User apparatus, base station and information reception method
A user apparatus configured to perform communication with a base station in a mobile communication system that supports carrier aggregation, including: transmission means configured to transmit, to the base station, the number of layers for each of component carriers that form the carrier aggregation as information of downlink mimo capability; and reception means configured to receive, from the base station, the number of layers that is used for determining a bit width of a rank indicator for each of the component carriers that form the carrier aggregation.. . ... Ntt Docomo Inc
User terminal, radio base station and radio communication method
According to the present invention, periodic csi reporting that is suitable for use when the number of component carriers that can be configured per user terminal is expanded more than in existing systems can be implemented. According to the present invention, a user terminal has a transmission section that transmits channel state information periodically, and a control section that controls the transmission of the channel state information, and the control section controls the transmission of a plurality of channel state information using a pucch format which can use a plurality of resource blocks and/or which has a smaller spreading factor than the spreading factor of pucch format 3.. ... Ntt Docomo Inc
User terminal, radio base station and radio communication method
To reduce a reception processing load, while obtaining gain of non-orthogonal multiple access (noma), in the case of transmitting a downlink signal using the noma scheme, a user terminal according to one aspect of the present invention is provided with a transmission section that transmits a plurality of precoding matrix indicators (pmis) to a radio base station, and a reception section that receives, from the radio base station, a downlink signal that is non-orthogonally multiplexed with a downlink signal to another user terminal determined based on the plurality of pmis and that is multiplied by the same precoding matrix as that of the downlink signal to another user terminal.. . ... Ntt Docomo Inc
User device, gateway device, radio base station, mobile communication system, and mobile communication method
A user device with a radio resource control unit configured to perform a process in a control plane according to radio resource control and a mobility management unit configured to perform mobility management of the user device and enable a process in a user plane is provided. The user device includes: a state control unit configured to cause the user device to transition from rrc-idle state where no communication bearer in the control plane is established, and emm-idle state where communication in the user plane is not enabled, to rrc-connected state where a communication bearer in the control plane is established and the emm-idle state; and a data transmission unit configured to transmit user data inputted into the user device, via the communication bearer in the control plane in the rrc-connected state and the emm-idle state. ... Ntt Docomo Inc
User terminal, radio base station, and radio communication method
An aperiodic csi report is appropriately triggered even when the number of component carriers that can be configured per user terminal is enhanced compared to an existing system. A user terminal includes: a reception section that receives downlink control information including information related to an instruction of transmission of aperiodic channel state information; and a control section that controls the transmission of the aperiodic channel state information, and the control section controls the transmission of the aperiodic channel state information by selecting a first modulation order or a second modulation order according to a number of serving cells and/or an index, where the first modulation order is defined in advance, the second modulation order is equal to or higher than the first modulation order, the serving cells are serving cells for which the transmission of the aperiodic channel state information is instructed, and the index is related to a modulation and coding scheme included in the downlink control information.. ... Ntt Docomo Inc
User terminal, radio base station and radio communication method
The present invention is designed so that the overhead of communication can be reduced even when the band for use is limited to a narrower band than the minimum system bandwidth in existing lte systems. A user terminal has a transmitting/receiving section that transmits and receives signals to and from a radio base station based on a pattern that is comprised of a plurality of radio resources, and a control section that determines the pattern from a plurality of patterns based on user terminal-specific information.. ... Ntt Docomo Inc
User terminal, radio base station and radio communication method
To carry out communications appropriately even if the number of component carriers settable to a user terminal is extended from the existing system. The user terminal according to one embodiment of the present invention is a user terminal which can communicate using a plurality of component carriers (ccs), which contains a generator unit which generates a power headroom report (phr) including information about a power headroom (ph) for each of ccs of a predetermined cell group among activated ccs and a transmission unit which transmits the generated phr.. ... Ntt Docomo Inc
User device and base station
A user device, which is used in a mobile communication system supporting d2d communication, includes an acquirer that obtains a discovery message to be transmitted to another user device; a generator that divides the discovery message into two or more discovery messages, and stores the two or more discovery messages in two or more resource regions of a physical channel for the d2d communication to generate a transmission signal to be transmitted to the other user device; and a transmitter that transmits the transmission signal.. . ... Ntt Docomo Inc
Moving picture encoding apparatus, moving picture decoding apparatus, moving picture encoding method, moving picture decoding method, moving picture encoding program, and moving picture decoding program
A moving picture encoding apparatus has a motion vector predicting part for performing, based on a temporal relation among adjacent reference frame images referred to for detecting motion vectors of adjacent blocks adjacent to a coding target block, a target reference frame image referred to for detecting a motion vector of the target block, and a target frame image being the frame image of the coding target, or based on time information thereof, a correction of scaling the motion vectors of the adjacent blocks on the basis of the target reference frame image; and a determination of an optimum predicted motion vector based on the motion vectors of the adjacent blocks; and thereby predicting the optimum predicted motion vector after the correction.. . ... Ntt Docomo Inc
Information processing device and program
Selection unit 112 selects one of a plurality of determination condition for determining whether to change the status of content, which preview information is displayed in a predetermined area, to a viewed status. Determination unit 113 determines whether to change the status of content, which preview information is displayed in a predetermined area, to the viewed status based on the selected determination condition. ... Ntt Docomo Inc
User terminal and radio base station
The present invention is designed so that communication can be carries out adequately even when the number of component carriers that can be configured in a user terminal is expanded from that in existing systems. According to one aspect of the present invention, a user terminal communicates by using a plurality of component carriers (ccs), and has a data buffering section that stores uplink data, a generating section that generates a bsr mac ce (medium access control control element), in which a given index corresponding to a buffer size is included, based on bsr (buffer status report) tables, in which amounts of uplink data that is stored (buffer sizes) and indices are associated, and a transmission section that transmits the bsr mac ce, and one of the bsr tables is a first bsr table for use when more than five ccs are configured in the user terminal.. ... Ntt Docomo Inc
Notification control system, server apparatus, communication terminal apparatus, computer program, and notification control method
A communication terminal apparatus, upon accepting a spoken instruction from a user, generates position data indicating a position of the user, and transmits the position data and audio data indicating the instruction to a server apparatus. The server apparatus discriminates a situation in which the user in possession of the communication terminal apparatus is placed, based on acquired data, and notifies content that satisfies a predetermined notification condition to the user. ... Ntt Docomo Inc
User terminal, radio base station and radio communication method
The present invention is designed to adequately control ul transmission in cells (for example, unlicensed bands) where listening is executed prior to transmission cell. The present invention provides a transmission section that transmits a ul signal, and a control section that controls the transmission of the ul signal based on a ul transmission command that is reported from a radio base station and based on listening that is executed before the ul signal is transmitted, and, when support is provided to transmit a dl signal and/or a ul signal from the middle of a subframe based on the result of listening, the control section transmits the ul signal in a second period, which is configured a first period after the ul transmission command is received.. ... Ntt Docomo Inc
User apparatus, base station, and gap configuration method
A user apparatus is provided. The user apparatus performs communications with a base station in a mobile communication system in which at least two carriers with different ttis are used. ... Ntt Docomo Inc
Base station, user equipment and broadcast information transmission and reception method
Techniques for receiving repeatedly transmitted broadcast information appropriately are disclosed. One aspect of the present invention relates to a base station including a communication control unit configured to control radio communication with user equipment and a broadcast information transmission unit configured to transmit broadcast information, wherein the broadcast information transmission unit includes scheduling information for second system information in first system information and broadcasts the second system information in accordance with the scheduling information.. ... Ntt Docomo Inc
User equipment, base station, and communication method
There is provided user equipment for communicating with a base station in a mobile communication system including the base station and the user equipment, the user equipment including a pdcp layer processor provided with a storage unit that receives and stores a plurality of acknowledgement signals to be transmitted to the base station; and an rlc layer processor that transmits, to the pdcp layer processor, a signal transmission grant signal that indicates that transmission of an uplink signal is allowed, wherein, upon receiving the signal transmission grant signal, the pdcp layer processor transmits, to the rlc layer processor, an acknowledgement signal that is received most recently among the plurality of acknowledgement signals.. . ... Ntt Docomo Inc
User apparatus and uplink control information bit width determination method
A user apparatus configured to perform communication with a base station in a mobile communication system that supports downlink spatial multiplexing, including: transmission means configured to transmit capability information of the user apparatus to the base station; reception means configured to receive configuration information from the base station; bit width determination means configured, if a parameter indicating a transmission mode corresponding to the downlink spatial multiplexing and predetermined additional information are received as the configuration information, to determine a bit width of a rank indicator based on the predetermined additional information.. . ... Ntt Docomo Inc
User terminal, radio base station, radio communication system and radio communication method
The present invention is designed to reduce the decrease of throughput in communication by user terminals that are limited to using a partial narrow band in a system band as a band for their use. According to one aspect of the present invention, a user terminal, in which the band to use is limited to a partial narrow band in a system band, has a control section that selects a predetermined narrow band set that is formed with a plurality of narrow bands, and a receiving section that receives a downlink signal in a narrow band that is included in the predetermined narrow band set, and the control section selects the predetermined narrow band set from a plurality of narrow band sets, to which different frequency shifts are applied.. ... Ntt Docomo Inc
Communication terminal device, incoming call control method, and program
A communication terminal device is a mobile communication terminal device that carries out communication for voice calls. In the case where an incoming voice call is received, the communication terminal device measures an orientation and a displacement of the device itself, and determines whether or not a condition occurring when a user picks up the device in his/her hand is met. ... Ntt Docomo Inc
Communication terminal device, outgoing call control method, and program
A communication terminal device is a mobile communication terminal device that carries out communication for voice calls. The communication terminal device measures an orientation and a displacement of the device itself, and determines whether or not a condition occurring when a user picks up the device in his/her hand is met. ... Ntt Docomo Inc
Audio coding device, audio coding method, audio coding program, audio decoding device, audio decoding method, and audio decoding program
An audio signal transmission device for encoding an audio signal includes an audio encoding unit that encodes an audio signal and a side information encoding unit that calculates and encodes side information from a look-ahead signal. An audio signal receiving device for decoding an audio code and outputting an audio signal includes: an audio code buffer that detects packet loss based on a received state of an audio packet, an audio parameter decoding unit that decodes an audio code when an audio packet is correctly received, a side information decoding unit that decodes a side information code when an audio packet is correctly received, a side information accumulation unit that accumulates side information obtained by decoding a side information code, an audio parameter missing processing unit that outputs an audio parameter upon detection of audio packet loss, and an audio synthesis unit that synthesizes decoded audio from the audio parameter.. ... Ntt Docomo Inc
Radio resource scheduling method, radio base station, and mobile station
According to an aspect of the present invention, there is provided a radio resource scheduling method, wherein the method includes generating format information, wherein the format information specifies a format of resource allocation information, the format corresponding to a number of a plurality of mobile stations that simultaneously perform communication with the radio base station; generating the resource allocation information provided with the format specified by the format information corresponding to radio resources allocated to the plurality of mobile stations; and transmitting, to the plurality of mobile stations, the resource allocation information.. . ... Ntt Docomo Inc
User equipment and d2d communication method
User equipment to be used in a communication system supporting d2d communication includes a setting unit that receives d2d gap configuration information from a base station, and sets a d2d gap based on the d2d gap configuration information; and a communication unit that monitors a d2d signal in a different frequency using the d2d gap, wherein the d2d gap that is set based on the d2d gap configuration information is a time interval with a predetermined time length in a time domain, the time interval being allocated based on a time hopping pattern.. . ... Ntt Docomo Inc
User apparatus and method for transmitting control information
A user apparatus used in a mobile communication system supporting d2d communication includes a broadcast channel information transmitter configured to transmit configuration information of a resource for another user apparatus to receive d2d control information, and information representing that the d2d control information is to be transmitted by using a broadcast channel for d2d; and a control information transmitter configured to transmit the d2d control information by using the resource.. . ... Ntt Docomo Inc
User terminal and radio communication method
According to the present invention, in the case where a relaying operation is applied using a user terminal that supports d2d, the power consumption of a user terminal that is used as a relay node can be suppressed. A user terminal is configured to connect with a radio base station and another user terminal, and configured to relay transmission between the radio base station and the other user terminal. ... Ntt Docomo Inc
User terminal, radio base station and radio communication method
The present invention is designed to optimize the uplink random access procedure even when coverage enhancement is applied to communication by user terminals, in which the bandwidth for use is limited to partial reduced bandwidths in a system bandwidth. A user terminal, in which the bandwidth to use is limited to a partial reduced bandwidth in a system bandwidth, has a receiving section that receives information related to repetitious transmission of a prach (physical random access channel); and a transmission section that transmits the prach in repetitions in part or all of subframes based on the information related to repetitious transmission.. ... Ntt Docomo Inc
Radio communication control method and radio communication system
A number lr of receive beamforming circuits provided in a receive beamformer execute receive beamforming (nr/lr) times with respect to a received signal vector received by nr reception antennas ar, thereby generating a receive beamforming (bf) output vector having nr receive bf output components. A calculation processor calculates a reception power for each of the nr receive bf output components, selects lr receive bf output components in decreasing order of reception power, and determines a suitable receive bf weight matrix including lr reception orthogonal bf weight vectors corresponding to the selected receive bf output components.. ... Ntt Docomo Inc
Mobile station, radio base station, and radio communication method
According to an aspect of the present invention, a mobile station, which carries out communication using a plurality of antenna ports, includes a receiving section configured to receive, from a radio base station, first-amount information that indicates a number of antenna ports in a first dimension, and second-amount information that indicates a number of antenna ports in a second dimension; and a transmitting section configured to transmit, to the radio base station, a precoding matrix codebook index that is obtained using the first-amount information and/or the second-amount information. Accordingly, a mobile station, a radio base station and a radio communication method can be provided in which a precoding matrix for a two-dimensional antenna array can be generated with flexibility.. ... Ntt Docomo Inc
Radio base station, user terminal, radio communication system and radio communication method
To suppress deterioration of reception characteristics of a user terminal even in the case where a radio base station performs power multiplexing on downlink mimo signals to transmit, a radio base station according to one aspect of the present invention has a transmission section that performs power multiplexing on downlink signals to a plurality of user terminals each having a mimo (multiple-input multiple-output) configuration to transmit, and a control section that controls a pmi (precoding matrix indicator) and/or an ri (rank indicator) applied to the downlink signals, where the transmission section transmits information on the pmi and/or the ri of another user terminal subjected to power multiplexing to a predetermined user terminal.. . ... Ntt Docomo Inc
User terminal, radio base station and radio communication method
The present invention is designed to reduce the decrease of spectral efficiency even when repetitious transmission is applied to communication by user terminals, in which the band to use is limited to a partial narrow band in a system band. According to one aspect of the present invention, a user terminal, in which the band to use is limited to partial narrow bands in a system band, has a receiving section that receives information related to spreading codes, a generation section that generates uplink signals, and a transmission section that repeats transmitting uplink signals in a plurality of subframes, and the generation section applies a predetermined spreading code to an uplink signal that is transmitted in part or all of the plurality of subframes, based on the information related to spreading codes.. ... Ntt Docomo Inc
User terminal and radio communication method
The present invention is designed to implement efficient rrm measurements in laa. A user terminal has a control section that controls the transmission and receipt of signals in a first frequency carrier where lbt (listen before talk) is configured, and a transmitting/receiving section, and the control section exerts control so that, in a dmtc (discovery measurement timing configuration) period, a downlink control channel detection operation is not performed in the first frequency carrier, and only an operation for receiving a discovery reference signal for rrm (radio resource management) measurement is performed.. ... Ntt Docomo Inc
User apparatus, mobile communication system and communication control method
A user apparatus is provided. The user apparatus is used in a mobile communication system in which d2d communications are supported. ... Ntt Docomo Inc
Beam selecting method, base station, and user equipment
A user equipment used in a mobile communication system that has multiple antenna ports configured to receive a first reference signal from a base station is disclosed. The antenna ports are configured to transmit the first feedback information for the first reference signal. ... Ntt Docomo Inc
User equipment apparatus
A user equipment apparatus acting as a relay terminal to relay data between a remote terminal and a base station includes a transmission unit configured to transmit to the remote terminal a groupcast id which is a destination for the data; a reception unit configured to receive a connection release request from the remote terminal; and a connection management unit configured to release a connection to the remote terminal when the connection release request is received from the remote terminal.. . ... Ntt Docomo Inc
Radio base station, user terminal, cell selection method and radio communication system
A user terminal selects small cells in a radio communication system in which a macro cell and small cells are arranged to overlap each other. In the cell selection method of the present invention, a macro base station to form a macro cell carries out the steps of determining the offset value to use in cell selection in a user terminal based on transmission property information of a second carrier in the small cell, and reporting the offset value to the user terminal. ... Ntt Docomo Inc
Base station, user equipment, and method for determining precoding matrix
A base station that communicates with a user equipment using multiple antenna ports includes an uplink channel estimation unit that estimates uplink channel states, a downlink channel estimation unit that estimates downlink channel states based on the estimated uplink channel states and channel reciprocity of uplink and downlink, a receiver unit that receives from the user equipment csi feedback information, and a precoder generating unit that determines a precoding matrix of downlink based on channel state information (csi) indicating the estimated downlink channel states and on the csi feedback information.. . ... Ntt Docomo Inc
User terminal, radio base station and radio communication method
The present invention is designed so that ul transmission can be carried out adequately even when communication is carried out by using a plurality of ccs of varying communication qualities. A user terminal communicates with a radio base station by using a first cc and a second cc, and has a generating section that generates uplink control information based on dl signals transmitted from the radio base station, a transmission section that transmits uplink control information, and a control section that controls the transmission of the uplink control information, wherein, when transmission of an uplink shared channel is indicated in the first cc, the control section controls the transmission of the uplink control information by using the uplink shared channel of the first cc, and, when transmission of an uplink shared channel is indicated in the second cc and the transmission of the uplink shared channel is not indicated in the first cc, the control section controls the transmission of the uplink control information by using an uplink control channel of the first cc.. ... Ntt Docomo Inc
User apparatus and base station
A user apparatus that is used in a mobile communication system that supports d2d communication, and that includes a capability for becoming a relay apparatus for relaying data communication between a remote user apparatus and a base station, including: a transmission unit configured to transmit a measurement resource that is used for the remote user apparatus to select a relay apparatus from among candidates of relay apparatuses, and a layer 2 address of the user apparatus; and a response unit configured to receive, from the remote user apparatus, an assignment request of an address for data communication by the relay, and to transmit information of the address to the remote user apparatus.. . ... Ntt Docomo Inc
User terminal, radio communication system, and radio communication method
Harq-ack is appropriately transmitted during enhanced carrier aggregation. A user terminal that can communicate with a radio base station by using six or more component carriers includes: a receiving section that receives scheduling information transmitted from the radio base station; a control section that determines based on the scheduling information to apply spatial bundling of a transmission acknowledgement signal only to a component carrier that the spatial bundling is applicable to; and a transmission section that transmits the transmission acknowledgement signal by using a pucch format 3.. ... Ntt Docomo Inc
Image prediction encoding device, image prediction decoding device, image prediction encoding method, image prediction decoding method, image prediction encoding program, and image prediction decoding program
The image predictive encoding device 10 comprises an intra frame predictive signal generation method determination section 15 which determines, for adjacent areas comprising regenerated pixel signals and adjacent to the target area, a predictive method which is derived on the basis of data corresponding to the adjacent areas as an r mode predictive method or an l mode predictive method, an intra frame predictive signal generation section 16 which generates an intra frame predictive signal on the basis of the r mode predictive method thus determined, and a subtractor 18, a transform section 19, a quantization section 20, and an entropy encoding section 25 which encode a residual signal of a pixel signal of the target area on the basis of the generated intra frame predictive signal.. . ... Ntt Docomo Inc
Mobile terminal apparatus, base station apparatus and communication control method
A user apparatus includes a transmission/reception circuit that transmits an uplink signal and receives a downlink signal; and a control circuit that switches to transmitting, as the uplink signal, an uplink control signal or a random access channel signal within a time interval configured of a plurality of symbols, after a given interval that is provided to prevent transmission of the uplink signal and reception of the downlink signal from overlapping each other within the time interval, by using a format in which first several symbols are blanked in the time interval.. . ... Ntt Docomo Inc
User terminal, radio base station and radio communication method
The present invention is designed so that ul transmission can be made adequately even when transmission of uplink control information using secondary cells (scells) is made configurable. A user terminal communicates with a radio base station by using carrier aggregation, and has a receiving section that receives a dl signal transmitted from the radio base station, a transmission section that transmits uplink control information that is generated based on the dl signal received, and a control section that controls transmission of the uplink control information, and, in this user terminal, the control section controls the transmission of the uplink control information using an uplink control channel and controls the transmission of the uplink control information using an uplink shared channel in each of a plurality of cell groups, each cell group including at least one component carrier (cc).. ... Ntt Docomo Inc
Video encoding method, video decoding method, video encoding apparatus, video decoding apparatus, video encoding program, and video decoding program
A video processing system provided with video encoding apparatus 1 and video decoding apparatus 2. The encoding apparatus 1 outputs a maximum delay time that is incurred by backward prediction, in addition to encoded data d1 resulting from encoding of video data d0. ... Ntt Docomo Inc
Mobile communication system
An object is to appropriately perform transmission power control on a mobile station (ue) when performing “inter-enb ca” by using cells under the control of plural radio base stations (enb). In a mobile communication system according to the present invention, each of plural radio base stations (enb#1, enb#2) reduces, upon detecting that the mobile station (ue) is performing transmission at a maximum transmission power (pcmax,c), by a predetermined amount a transmission power of the mobile station (ue) in a cell (#1/#2a to #2c) under the control thereof and notifies other radio base station (enb) of the predetermined amount.. ... Ntt Docomo Inc
User terminal, radio base station and radio communication method
The present invention is designed so that ul transmission can be made adequately even when transmission of uplink control information using secondary cells (scells) is made configurable. A user terminal communicates with a radio base station by using carrier aggregation, and has a generating section that generates uplink control information based on a dl signal transmitted from the radio base station, and a control section that controls transmission of the uplink control information, and the control section controls the transmission of the uplink control information by applying simultaneous transmission of an uplink control channel and an uplink shared channel to each of a plurality of cell groups, each including at least one component carrier (cc).. ... Ntt Docomo Inc
Video prediction encoding device, video prediction encoding method, video prediction encoding program, video prediction decoding device, video prediction decoding method, and video prediction decoding program
A predicted signal generation unit provided in a video predictive encoding device estimates a zero-th motion vector for derivation of a zero-th predicted signal, selects a zero-th motion vector predictor similar to the zero-th motion vector, and generates zero-th side information containing a zero-th motion vector predictor index to identify the motion vector predictor and a motion vector difference determined from the zero-th motion vector and the zero-th motion vector predictor. The video predictive encoding device selects a motion vector for generation of a first predicted signal having a high correlation with a target region, generates first side information containing a first motion vector predictor index to identify the motion vector as a first motion vector predictor, sets the first motion vector predictor to a first motion vector, and combines the zero-th and first predicted signals to generate a predicted signal of the target region.. ... Ntt Docomo Inc
Audio signal processing device, audio signal processing method, and audio signal processing program
An audio signal processing device comprises a discontinuity detector configured to determine an occurrence of a discontinuity from a sudden increase of an amplitude of decoded audio obtained by decoding the first audio packet which is received correctly after an occurrence of a packet loss, and a discontinuity corrector for correcting the discontinuity of the decoded audio.. . ... Ntt Docomo Inc
Radio base station, user terminal and radio communication method
To suppress deterioration of reception characteristics even in the case where a radio base station performs power multiplexing on downlink signals to transmit, a radio base station according to one aspect of the present invention has a transmission section that performs power multiplexing on downlink signals to a plurality of user terminals each having a mimo configuration to transmit, and a control section that controls a phase rotation applied to the downlink signal to each user terminal, where the control section controls so as to apply different phase rotations to the downlink signals.. . ... Ntt Docomo Inc
User apparatus and base station
A user apparatus communicating with a first base station and a second base station in a communication system which supports carrier aggregation is provided. The user apparatus includes a measurement unit configured to measure a timing gap between a reception timing of a first radio signal received from the first base station and a reception timing of a second radio signal received from the second base station; and a transmission unit configured to transmit the information indicating the timing gap measured by the measurement unit to the first base station or the second base station.. ... Ntt Docomo Inc
Radio base station and mobile station
Priority control is performed using fpis. A radio base station enb according to the present invention includes: a bearer management unit 12 configured to manage fpis assigned to data flows received from a core network device s-gw via an s1 bearer; and a priority control unit 13 configured to perform priority control over the data flows received from the core network device s-gw via the s1 bearer, in which the bearer management unit 12 establishes a radio bearer with a mobile station ue for each of the fpis, and the priority control unit 13 transfers each data flow received from the core network device s-gw via the s1 bearer, to the radio bearer corresponding to the fpi assigned to the data flow.. ... Ntt Docomo Inc
Method and apparatus for motion compensation prediction
The invention relates to a motion compensation performed under an inter-frame prediction. A fractional sample interpolation is applied on retrieved samples to generate fractional samples. ... Ntt Docomo Inc
Device and method for using appropriate telephone number for call connection
A telephone sends, in accordance with a user's instruction, a call connection request that includes a source telephone number and a destination telephone number to a connecting device or voip server device that corresponds to the source telephone number. Management server device, upon identifying a set of a source telephone number and a destination telephone number that is more appropriate than a set of those included in the call connection request, sends a notice to the telephone to prompt a user to change the telephone numbers. ... Ntt Docomo Inc
Base station
Mapping schemes of data flows to radio bearers in flow-based qos control are disclosed. One aspect of the present invention relates to a base station including a data flow reception unit configured to receive a data flow having a flow identifier and a flow priority via one or more tunnels and a data flow mapping unit configured to map the received data flow to a radio bearer in accordance with mapping based on one or more of the flow identifier, the flow priority and the tunnels.. ... Ntt Docomo Inc
User device and restriction method
A user device that communicates with a network apparatus and in which at least one application is installed. The user device includes a receiver that receives, from the network apparatus, restriction information including a destination identifier for identifying an external network connected to the network apparatus and a barring rate associated with the destination identifier, and a controller that when communication is to be started by the application, controls whether to allow or prevent the communication by the application based on the restriction information.. ... Ntt Docomo Inc
Radio communication method, radio base station and radio communication system
The present invention is designed to shorten the time that a user terminal takes to detect the common control/reference signals while coverage of the common control/reference signals transmitted from a small base station is secured. As the radio communication method of the invention, a radio communication method is provided in which beam forming information for forming transmission beams directed from the small base station to the user terminal are generated based on position-related information of the user terminal acquired by communication between the macro base station and the user terminal using a coverage carrier and position-related information of the small base station, and the small base station precodes at least one of a common control signal and a reference signal that are common in a small cell based on the beam forming information and transmits the precoded signal from a plurality of transmitting antennas using a capacity carrier.. ... Ntt Docomo Inc
Gateway device, and bearer setting control method
In a gateway device that is provided between a radio base station and a terminal device of a mobile communication network, the gateway device includes a storage control unit that temporarily stores data sequentially received from the terminal device in a data storage unit, and then transmits the data stored in the data storage unit to an external device connected to the mobile communication network; and a determination unit that determines a real time property of a service in the external device, and selects a method of setting a bearer to the radio base station based on the real time property.. . ... Ntt Docomo Inc
Video predictive encoding device, video predictive encoding method, video predictive encoding program, video predictive decoding device, video predictive decoding method, and video predictive decoding program
A video prediction encoding device provided with a picture storage unit storing, as reference pictures to be used for encoding of a subsequent picture, one or more of reconstructed pictures restored from compressed picture data and a memory control unit to control a frame memory in the picture storage unit. When a frame size of input pictures is not more than 1/(2̂l) (where l is an integer of one or more) of a maximum frame size of pictures, the memory control unit determines that (2̂l) times the maximum number of reconstructed pictures are storable in the frame memory.. ... Ntt Docomo Inc
Radio communication control method and radio communication system
A communication control method includes: for each of plurality of receivers ue, calculating excluding channel matrices that include a plurality of equivalent channel matrices acquired by multiplying a transmit bf weight matrix corresponding to that receiver ue by each of a plurality of channel matrices corresponding to receivers ue other than that receiver ue, acquiring a first eigenvector that is included in a right-singular matrix obtained from single value decomposition of the excluding channel matrices, the first eigenvector corresponding to a noise subspace of the excluding channel matrices, acquiring a second eigenvector that is included in a right-singular matrix obtained from single value decomposition of a product of an equivalent channel matrix including the transmit bf weight matrix corresponding to that receiver ue and the first eigenvector, the second eigenvector corresponding to a signal subspace of the product, and obtaining a precoding matrix corresponding to that receiver ue by multiplying the first eigenvector by the second eigenvector.. . ... Ntt Docomo Inc
Gateway change method
A correspondence information storage 32 acquires correspondence information in which an enb 20, an sgw-c 60, and an sgw-u 70 are associated with each other in advance, and a connection controller 31 receives a handover request from the enb 20 and identifies a target enb 20 and a source enb 20. A connection changer 33 identifies the sgw-c 60 and the sgw-u 70 associated with the target enb 20 and identifies the sgw-c 60 and the sgw-u 70 associated with the source enb 20, with reference to the correspondence information. ... Ntt Docomo Inc
Service allocation determination device and service allocation determination method
A service allocation determination device and service allocation determination method that can allocate a service to a slice without wasteful use of resources. In a bss/oss, a service request receiving unit receives service requirements and information indicating functions for implementing a service. ... Ntt Docomo Inc
Radio base station
A base station performs the combination of digital precoding and analog beamforming. Transceiving antenna elements are classified into antenna groups. ... Ntt Docomo Inc
User apparatus and transmittal acknowledgement information transmission method
A user apparatus configured to communicate with a base station in a mobile communication system that supports carrier aggregation formed by a plurality of cells including a first cell and a second cell that uses a transmission time interval (tti) length different from a tti length of the first cell, including a reception unit configured to receive downlink data transmitted from the base station in the second cell, and generate transmittal acknowledgement information for the downlink data; and a transmission unit configured to bundle a plurality of pieces of transmittal acknowledgement information, generated in the reception unit, for a plurality of pieces of downlink data into one piece of transmittal acknowledgement information to transmit the bundled transmittal acknowledgement information to the base station in the first cell.. . ... Ntt Docomo Inc
User terminal, radio base station and radio communication method
The present invention is designed reduce the increase of load in user terminals even when the number of ccs that can be configured in a user terminal is expanded from that of existing systems and/or when ca is executed using unlicensed ccs. A user terminal communicates with a radio base station by means of carrier aggregation using a plurality of component carriers (ccs), and has a receiving section that receives dl signals transmitted from each cc, a measurement section that makes measurements by using the dl signals, and a control section that controls the receiving operations in the receiving section and the measurement operations in the measurement section, and, when a plurality of ccs, including at least a first cc, which corresponds to a primary cc of an existing system, and a third cc, which is different from the first cc and a second cc that corresponds to a secondary cc of the existing system, are configured, the control section applies, to the third cc, receiving operations and/or measurement operations that are different from those of the second cc.. ... Ntt Docomo Inc
Radio communication method, local area base station apparatus, mobile terminal apparatus and radio communication system
A radio communication method is provided in which a local area base station apparatus, arranged in a wide area where a first carrier frequency is used and forming a local area that is narrower than the wide area, transmits a downlink signal, using a second carrier frequency, which belongs to a different frequency band from the first carrier frequency and which has a wider bandwidth than the first carrier frequency, the local area base station apparatus transmits a detection signal that is used to detect the local area base station apparatus in the mobile terminal apparatus, and the local area base station apparatus transmits the downlink signal for the mobile terminal apparatus with transmission power that is determined based on the path loss of the detection signal received in the mobile terminal apparatus.. . ... Ntt Docomo Inc
Radio base station, user terminal and radio communication method
The present invention is designed to optimize the rrm measurements in a carrier where an lbt function is applied. A radio base station executes lbt (listen before talk) in an unlicensed carrier, acquires an lbt result, determines the timing to measure a drs (discovery reference signal) that is transmitted in the unlicensed carrier, and transmits the lbt result and the measurement timing to a user terminal, and the user terminal receives the lbt result and the drs measurement timing from the radio base station, and detects the unlicensed carrier by measuring the drs that is transmitted in the unlicensed carrier based on the lbt result, based on the lbt result and the measurement timing.. ... Ntt Docomo Inc
User terminal, radio base station, and radio communication method
The present invention is designed to allow adequate communication even when the number of ccs that can be configured in a user terminal is expanded from that of existing systems and/or when ca is executed using unlicensed ccs. A user terminal communicates with a radio base station by means of carrier aggregation using a plurality of component carriers (ccs), and has a receiving section that receives dl signals transmitted from each cc, a transmission section that transmits ul signals, and a control section that controls transmission operations in the transmission section, and, when a plurality of ccs, including at least a first cc, which corresponds to a primary cc of an existing system, and a third cc, which is different from the first cc and a second cc that corresponds to a secondary cc of the existing system, are configured, the control section applies, to the third cc, ul signal transmission operations that are different from those of the second cc.. ... Ntt Docomo Inc
User equipment, base station, information reporting method, and information receiving method
There is provided user equipment for communicating with a base station in a radio communication system supporting carrier aggregation, the user equipment including a generator that generates band combination information indicating one or more band combinations capable of being used for the carrier aggregation in the user equipment; and a transmitter that transmits the generated band combination information to the base station, wherein the generator generates the band combination information including highest band combination information indicating a highest band combination having a largest number of ccs to be combined, among the one or more band combinations capable of being used for the carrier aggregation in the user equipment.. . ... Ntt Docomo Inc
User terminal, radio base station and radio communication method
The present invention is designed so that uplink control signals can be transmitted adequately even when the number of component carriers that can be configured in a user terminal is expanded. A user terminal can communicate by using six or more component carriers, and has a receive receiving section that receives a dl signal, a transmission section that transmits a ul control signal, which includes a delivery acknowledgement signal in response to the dl signal, and a control section that controls a format to apply to the ul control signal, and the control section applies a format, having large capacity in comparison to a pucch format of an existing system in which the number of component carriers to be configured is five or less, to the ul control signal.. ... Ntt Docomo Inc
User terminal, radio base station and radio communication method
The present invention is designed so that cross-carrier scheduling is carried out adequately even when the number of component carriers that can be configured in a user terminal is expanded compared to that of existing systems. A user terminal can communicate by using six or more component carriers, and has a receiving section that receives downlink control information including a carrier indicator field (cif); and a control section that controls a receiving process of a downlink shared channel and/or a transmission process of an uplink shared channel in a predetermined component carrier based on the cif, and the receiving section receives downlink control information including the same cif value from different component carriers; and the control section determines the predetermined component carrier, considering an offset that is configured to a cif value of each component carrier that transmits downlink control information including the cif.. ... Ntt Docomo Inc
User terminal, radio base station and radio communication method
The present invention is designed so that communication can be carried out adequately even when the bandwidth to use is limited to partial reduced bandwidths in a system bandwidth. According to an example of the present invention, a user terminal, in which the bandwidth to use is limited to a partial reduced bandwidth in a system bandwidth, has an acquiring section that acquires epdcch (enhanced pdcch) configuration information based on information that is reported from a radio base station without using a pdcch (physical downlink control channel), and a receiving section that detects a user terminal-specific search space (uss: ue-specific search space) of an epdcch based on the epdcch configuration information.. ... Ntt Docomo Inc
User terminal, radio base station and radio communication method
The present invention is designed to measure and/or report csi (channel state information) of a plurality of narrow bands, even when the band to use is limited to a partial narrow band in a system band. According to one aspect of the present invention, a user terminal, in which the band to use is limited to a partial narrow band in a system band, has a receiving section that receives information related to csi (channel state information) measurement in a narrow band, a measurement section that measures csis in a plurality of narrow bands based on the information related to csi measurement, and a transmission section that reports the measured csis.. ... Ntt Docomo Inc
Image prediction encoding/decoding system
An encoding target region in an image can be partitioned into a plurality of prediction regions. Based on prediction information of a neighboring region neighboring a target region, the number of previously-encoded prediction regions in the target region, and previously-encoded prediction information of the target region, a candidate for motion information to be used in generation of a predicted signal of the target prediction region as a next prediction region is selected from previously-encoded motion information of regions neighboring the target prediction region. ... Ntt Docomo Inc
User terminal, radio base station, radio communication system, and radio communication method
A channel state is adequately reported even if the number of component carriers configurable to a user terminal is expanded to six or more. The user terminal for communicating with a radio base station by use of six or more component carriers includes a measuring section configured to measure reception quality of a downlink channel of each of the component carriers, and a transmission section configured to periodically transmit information relating to the reception quality in accordance with timing specified from the radio base station. ... Ntt Docomo Inc
User terminal and radio communication method
The present invention is designed so that broadcast information is transmitted and received adequately even when the bandwidth to use is limited to partial reduced bandwidths in a system bandwidth and the broadcast information is transmitted and received in repetitions over multiple subframes. A user terminal, in which the bandwidth to use is limited to a partial reduced bandwidth in a system bandwidth, has a receiving section that receives first system information and second system information, and a control section that acquires transmission information, which includes the repetition factor for the second system information, from the first system information, and the receiving section receives the second system information based on the transmission information.. ... Ntt Docomo Inc
Mobility management switching center, communication system, and communication control method
A mobility management switching center is for communicating with user equipment of a communication system that supports lte or 3g, the mobility management switching center including a receiver that receives a session management signal from the user equipment; and a transmitter that transmits, when the session management signal is received, a restriction signal for instructing not to transmit a new session management signal to the user equipment.. . ... Ntt Docomo Inc
Information processing device, calorie management system, caloric balance estimation method, and program
A calculation device is provided with: an acquisition unit that acquires an acetone concentration in a gas constituent discharged from a user and measured; an estimation unit that estimates a calorie balance corresponding to the acetone concentration acquired by the acquisition unit based on a predetermined correlative relationship between acetone concentrations and calorie balance; and a processing execution unit that executes predetermined processing using an estimation result of the estimation unit.. . ... Ntt Docomo Inc
User terminal, radio base station and radio communication method
The present invention is designed so that communication can be carried out adequately even when the bandwidth to use is limited to partial reduced bandwidths in a system bandwidth. A user terminal, in which the bandwidth to use is limited to partial reduced bandwidths in a system bandwidth, has a receiving section that receives paging information that is transmitted in a predetermined subframe, and a control section that controls the receipt of a downlink shared channel and/or an enhanced downlink control channel by using information about a cfi (control format indicator) value that is acquired based on the paging information, and the receiving section detects a common search space, which is allocated in a fixed starting location in the predetermined subframe, and receives the paging information indicated in the common search space.. ... Ntt Docomo Inc
Radio base station, user terminal and radio communication method
The present invention is designed to improve spectral efficiency in a system that runs lte/lte-a by using a carrier in which lbt (listen before talk) is configured. One aspect of the present invention provides a radio base station in a radio communication system where the radio base station and a user terminal communicate by using a carrier in which lbt is configured, and this radio base station has a measurement section that executes lbt in a predetermined carrier sensing duration and acquires an lbt result, and a transmission section that transmits a downlink signal based on the lbt result, and the predetermined carrier sensing duration includes a first carrier sensing duration and a second carrier sensing duration, which is shorter than the first carrier sensing duration.. ... Ntt Docomo Inc
Radio base station, user terminal and radio communication method
The present invention is designed so that the decrease of spectral efficiency can be reduced even when coverage enhancement is attempted in communication by user terminals in which the bandwidth to use is limited to partial reduced bandwidths in a system bandwidth. A radio base station communicates with a user terminal in which the bandwidth to use is limited to partial reduced bandwidths in a system bandwidth, and this radio base station has a transmission section that transmits a downlink signal to the user terminal in repetitions, and a control section that controls transmission by applying a transmission method to use frequency hopping or a transmission method to use frequency scheduling to the downlink signal, and the transmission section transmits information about the transmission method to apply to the downlink signal to the user terminal.. ... Ntt Docomo Inc
Resource management in cloud systems
A method for waking up one or more sleeping small cell base stations in a wireless communication system for serving a user equipment is described. The wireless communication system includes a plurality of small cell base stations and one or more macro base stations. ... Ntt Docomo Inc
User equipment and base station
Control techniques of broadcast information reception operations at user equipment having coverage enhancement functionalities are disclosed. One aspect of the present invention relates to user equipment, comprising: a transmission and reception unit configured to transmit and receive radio signals to/from a base station; and a broadcast information combination unit configured to receive system information blocks from a cell across multiple windows.. ... Ntt Docomo Inc
Communication control method, radio communication system, radio base station and user terminal
A radio communication method for a user terminal performing communication in a cell where dl transmission and ul transmission vary in a time direction is provided. The radio communication method includes receiving downlink control information transmitted in a specific subframe; and analyzing a number and/or positions of subframes to be allocated for the dl transmission among subframes constituting a radio frame based on dl assignment in the downlink control information.. ... Ntt Docomo Inc
User terminal, radio base station and radio communication method
The present invention is designed so that communication is carried out adequately even when the number of component carriers that can be configured in the user terminal is increased compared to that of existing systems. According to one aspect of the present invention, a user terminal can communicate by using six or more component carriers (ccs), and has a receiving section that receives predetermined higher layer signaling and a downlink control signal including information about change of ul-dl configuration; and a control section that sets a ul-dl configuration of the cc using the information about the change of ul-dl configuration, wherein, the control section determines a cc to be configured using the information about the change of ul-dl configuration among the six or more ccs based on the predetermined higher layer signaling.. ... Ntt Docomo Inc
User terminal, radio base station and radio communication method
The present invention is designed so that communication can be performed adequately even when the number of component carriers (ccs) that can be configured in a user terminal is expanded and/or when ca is executed using unlicensed ccs. A user terminal communicates with a radio base station using carrier aggregation, and has a transmission section that transmits ul signals via each cc, and a control section that controls the transmission operations in the transmission section, and, when a plurality of ccs, including at least a first cc, which corresponds to a primary cc of an existing system, and a third cc, which is different from the first cc and a second cc that corresponds to a secondary cc of the existing system, are configured, the control section applies, to the third cc, random access operations that are different from those of the first and second ccs.. ... Ntt Docomo Inc
User terminal, radio base station and radio communication method
The present invention is designed so that the efficiency of use of ul resources is prevented from decreasing even when the band to use is limited to partial narrow bands in the system band. According to one aspect of the present invention, a user terminal, in which the band to use is limited to partial narrow bands in the system band, has a receiving section that receives downlink control information that relates to a resource to allocate to a pdsch (physical downlink shared channel), in an epdcch (enhanced physical downlink control channel), and receives the pdsch based on the downlink control information, a transmission section that transmits a pucch (physical uplink control channel) in response to the pdsch, and a control section that controls a pucch resource based on a prb (physical resource block) index that corresponds to the pdsch.. ... Ntt Docomo Inc
User equipment, feedback control method, and retransmission control method
User equipment to be used as receiving user equipment in a mobile communication system supporting d2d communication, the user equipment includes a feedback unit that receives a d2d signal from transmitting user equipment, and that transmits, to the transmitting user equipment, a feedback signal with respect to the d2d signal by using a predetermined resource; and a receiver that receives a retransmission d2d signal transmitted from the transmitting user equipment based on the feedback signal.. . ... Ntt Docomo Inc
User terminal, radio base station and radio communication method
The present invention is designed to optimize the uplink access procedure even when the band to use is limited to partial narrow bands in a system band. A user terminal, in which the band to use is limited to a partial narrow band in a system band, has a receiving section that receives system information that includes indication information of an uplink carrier frequency, from a radio base station, as system information for narrow bands, which is different from system information for the system band, and a transmission section that transmits a random access preamble to the radio base station in one of a plurality of narrow bands that are specified by the indication information of the uplink carrier frequency.. ... Ntt Docomo Inc
User apparatus and resource selection method
A user apparatus for use in a mobile communication system that supports d2d communication, including: a signal transmission unit configured to transmit a plurality of d2d signals; and a resource selection unit configured to select, from a predetermined resource pool, a radio resource having a time resource and a frequency resource for transmitting the plurality of d2d signals, wherein the resource selection unit is configured to select the radio resource such that the plurality of d2d signals are not transmitted by a same time resource.. . ... Ntt Docomo Inc
User apparatus and cell control method
A user apparatus performing communications with a base station in a mobile communication system which supports carrier aggregation is provided. The user apparatus includes a processing unit configured to receive from the base station an instruction for adding one or more sub cells associated with a specific secondary cell group; a management unit configured to, upon receiving the instruction, store information in which the specific secondary cell group is associated with the one or more sub cells; and a control unit configured to, in the case where a command for performing an operation for the specific secondary cell group is received from the base station, perform the operation for any one of the one or more sub cells based on the association.. ... Ntt Docomo Inc
Base station and user equipment
Schemes for configuring a longer drx cycle for user equipment are disclosed. One aspect of the present invention relates to a base station, comprising: a communication control unit configured to control radio communication with user equipment; and a drx control unit configured to control discontinuous reception (drx) by the user equipment, wherein the drx control unit manages a system frame number (sfn), a subframe number and a hyper sfn (hsfn) in the radio communication, wherein the hsfn counts how many times the sfn wraps around, and uses the hsfn to configure an extended drx (edrx) having a specified reception period for the user equipment.. ... Ntt Docomo Inc
User terminal, radio base station and radio communication method
The present invention is designed so that it is possible to reduce the measurement-induced increase of load and power consumption in user terminals even when the number of component carriers that can be configured per user terminal is expanded. A user terminal communicates with a radio base station that configures groups (tags) comprised of one or more cells, and has a receiving section that receives information related to component carriers (ccs) included in the groups, and a measurement section that makes measurements on a per group basis based on the information related to the component carriers.. ... Ntt Docomo Inc
Information communication terminal, peripheral device cooperation method, and program
An information communication terminal includes; a reception unit configured to receive setting values of notification setting for plural connected peripheral devices; a peripheral device setting storage unit configured to store the received setting values of notification setting for the plural peripheral devices; a service application setting storage unit configured to store setting values of notification setting from a service application to the plural connected peripheral devices by using the setting values stored in the peripheral device setting storage unit as initial values; a control unit configured to assign a setting value of notification setting to transmission data on the basis of a setting value stored in the service application setting storage unit when the transmission data are received from the service application; and a transmission unit configured to transmit the transmission data to which the setting value of notification setting is assigned to at least one peripheral device.. . ... Ntt Docomo Inc
Radio communication system, radio communication method, radio base station and user terminal
The present invention is designed to establish synchronization between transmission points when downlink signals are transmitted from a plurality of transmission points to a user terminal. A radio communication system has a first radio base station that forms a first cell, a second radio base station that forms a second cell, which is placed on the area of the first cell in an overlapping manner, and a user terminal that is capable of carrying out radio communication with the first radio base station and the second radio base station, and the second radio base station has a receiving section that receives synchronization correction information, which is for establishing synchronization with a synchronization target, from the user terminal, and a synchronization correction section that corrects synchronization based on the synchronization correction information.. ... Ntt Docomo Inc
Uplink interference reduction method, and base station
An uplink interference reduction method executed in a radio communication system which includes a connected base station, and an interference base station to which an interference user apparatus transmitting an interference signal with respect to the connected base station is connected, includes control information transmission step, transmitting to the connected base station by the interference base station, control information used for reducing the interference signal at the connected base station, and interference reduction step reducing, by the connected base station, the interference signal using the control information, to acquire a desired signal transmitted from a user apparatus that is connected to the connected base station.. . ... Ntt Docomo Inc
Paging control method, communication control apparatus and base station
A paging control method in a mobile communication system including a base station and a communication control apparatus, including: an instruction step in which, in a state where a connection between the base station and the communication control apparatus is established, the base station transmits a connection maintaining instruction signal to the communication control apparatus; and a paging step in which, when the communication control apparatus that receives the connection maintaining instruction signal receives downlink data for the user apparatus, the communication control apparatus holds the downlink data in a buffer and transmits a paging signal for the user apparatus while maintaining the connection between the base station and the communication control apparatus.. . ... Ntt Docomo Inc
Gateway apparatus and communication method
A gateway apparatus provided between a radio base station in a mobile communication network and a terminal apparatus, including: notification means configured to notify a proxy apparatus, connected to the mobile communication network as an external apparatus, of information indicating that the gateway apparatus is activated; and storing control means configured to temporarily store data sequentially received from the terminal apparatus in data storage means, and after that, to transmit the data stored in the data storage means to the proxy apparatus.. . ... Ntt Docomo Inc
Display control device and program
Selection unit selects any one of a plurality of images. Display controller displays preview information of content (information representing the content detail) corresponding to an image selected from among the any one of the plurality of images by selection unit. ... Ntt Docomo Inc
System and program
Estimating unit estimates an alarm notification time. Presenting unit presents the estimated alarm notification time to a user. ... Ntt Docomo Inc
User equipment apparatus and d2d communication method
A user equipment apparatus for supporting d2d (user equipment-to-user equipment) communication includes a generation unit configured to generate information about at least one of a transmission resource which can be used by the user equipment apparatus to transmit a d2d signal and a reception resource which can be used by the user equipment apparatus to receive a d2d signal; and a transmission unit configured to transmit the generated information to another user equipment apparatus; wherein the transmission resource and the reception resource are orthogonal in terms of time.. . ... Ntt Docomo Inc
User terminal, radio base station and radio communication method
The present invention is designed so as to carry out the listening operation that accompanies ul transmission and/or ul transmission adequately when ul transmission is controlled based on the result of listening. The present invention provides a transmission section that transmits an uplink shared channel, an uplink control channel and an uplink reference signal, and a control section that controls the transmission of the uplink shared channel, the uplink control channel and/or the uplink reference signal based on the result of listening in the uplink, and, when the uplink reference signal is configured to be transmitted in a subframe in which the uplink shared channel and/or the uplink control channel are transmitted, the control section controls the transmission of the uplink reference signal based on the result of listening that is executed before the uplink shared channel and/or the uplink control channel are transmitted.. ... Ntt Docomo Inc
User terminal, radio base station, radio communication system, and radio communication method
An object is to enable proper operation of extended carrier aggregation that can allocate at least six component carriers to each user terminal. Provided is a user terminal that communicates with a radio base station that configures a plurality of cell groups each of which including one or more cells. ... Ntt Docomo Inc
Base station and user equipment
Techniques for implementing mimo communication in accordance with reciprocity based precoding are provided. The present disclosure relates to a base station for implementing multi-antenna transmission that includes a communication control unit configured to control multi-antenna transmission with user equipment and a channel state estimation unit configured to estimate a channel state with the user equipment based on an uplink reference signal from the user equipment. ... Ntt Docomo Inc
Base station
A base station is provided. The base station is used as a first base station in a mobile communication system including the first base station, a second base station communicating with the first base station, and a user apparatus communicating with the first base station. ... Ntt Docomo Inc
Mobile communication system, communication control device, mobility management entity, and mobile communication method
A home subscriber server (hss) determines whether roaming of voice communication via an ip multimedia subsystem (ims) is supported in the visited public land mobile network (vplmn) or not, and transmits to a mobility management entity (mme) a signal that includes a ‘voice supported’ or ‘voice not supported’ indicator that indicates whether the roaming is supported or not. The mme receives the indicator from the hss, and transmits to a user equipment (ue) an ‘attach accept’ as a response to an ‘attach request’ for the vplmn. ... Ntt Docomo Inc
User terminal, radio base station and radio communication method
A user terminal according to one aspect, can communicate with a radio base station by using a carrier where lbt (listen before talk) is configured, and has a receiving section that receives downlink data that is transmitted based on an lbt result in a specific subframe that includes an lbt symbol, and a control section that controls a receiving process of the downlink data, and, in this user terminal, the specific subframe is allocated periodically, and includes the lbt symbol in the last n symbols, a subframe in a predetermined period following the specific subframe includes a pdcch (physical downlink control channel) symbol in several symbols from the beginning, and the control section controls the receiving process of the downlink data, taking into consideration the lbt symbol and the pdcch symbol.. . ... Ntt Docomo Inc
Base station and user equipment
Techniques for controlling a transport block size to implement harq sharing are disclosed. One aspect of the present invention relates to a base station, comprising: a cell management unit configured to manage cells for radio communication with user equipment; and a mac processing unit configured to control a retransmission operation via multiple cells by using harq sharing for managing one or more harq processes as a common harq process, wherein the cell management unit acquires communication quality of multiple harq sharing applied cells, and the mac processing unit controls to activate transmission via the multiple cells with a minimum transmission data size among transmission data sizes corresponding to the acquired communication quality of the respective cells.. ... Ntt Docomo Inc
User terminal, radio communication system and radio communication method
The present invention is directed to dual connectivity, in which a control for synchronous dual connectivity and a control for asynchronous dual connectivity are appropriately applied. In a user terminal which communicates with a plurality of cell groups, respectively including one or more cells which utilize different frequencies, based on an indicator that indicates when an event occurs in the higher layer, if the indicator changes in a state where either of the control for synchronous dual connectivity and the control for asynchronous dual connectivity is being operated, the user terminal either performs a control that does not allow the switching to another dual connectivity control, or performs a control that switches to another dual connectivity control only a predetermined number of times.. ... Ntt Docomo Inc
User apparatus, and cell measurement method
A user apparatus configured to communicate with a base station in a mobile communication system that supports carrier aggregation, including: a management unit configured to receive, from the base station, a configuration message for adding a cell or a cell group in the carrier aggregation, and perform configuration of the cell or the cell group, and to receive, from the base station, measurement configuration information on measurement of the cell or the cell group; and a measurement unit configured to allow not to perform measurement of the cell or the cell group based on the measurement configuration information until a predetermined condition is satisfied, and to perform measurement of the cell or the cell group based on the measurement configuration information when the predetermined condition is satisfied to transmit a measurement report to the base station.. . ... Ntt Docomo Inc
Radio transmitting station
A radio transmitting station includes: multiple transmitting antenna elements configured to transform electrical signals into radio waves and emit the radio waves; a precoder configured to control a beam direction of the radio waves to be emitted from the multiple transmitting antenna elements by giving precoding weights to the electrical signals to be supplied to the multiple transmitting antenna elements; and at least one power adjuster configured to adjust power of an electrical signal that is to be supplied to at least a portion of the multiple transmitting antenna elements, such that differences between powers of the electrical signals to be supplied to the multiple transmitting antenna elements are reduced.. . ... Ntt Docomo Inc
User terminal, radio base station, and radio communication method
According to the present invention, in an lte system, communication can appropriately carried out even in the case where a bandwidth utilized in the transmission/receiving of data signals and control signals is configured narrower than the system bandwidth. According to an embodiment, a user terminal is configured to carry out communication with a radio base station using a narrow bandwidth that is limited to a narrower bandwidth than a system bandwidth. ... Ntt Docomo Inc
Base station and data transfer method
A base station in a master cell group configured to establish a bearer to a mobile station together with a base station in a secondary cell group for communication includes a data transfer instruction unit configured to transmit to the base station in the secondary cell group an instruction on whether to transfer downlink data in the base station in the secondary cell group to the base station in the master cell group upon deletion or modification of the secondary cell group or upon deletion of the bearer in the secondary cell group; a reception unit configured to receive the downlink data transferred from the base station in the secondary cell group according to the instruction; and a transmission unit configured to transmit the received downlink data to the mobile station.. . ... Ntt Docomo Inc
Radio relay station
A radio relay station is arranged on a moving conveyance. The radio relay station receives downlink radio signals from a stationary base station fixed outside the conveyance, and transmits to destination user equipments in the conveyance downlink radio signals resulting from the downlink radio signals transmitted from the stationary base station. ... Ntt Docomo Inc
Base station and user equipment
Some techniques for implementing estimation of channel states with high accuracy and efficient feedback of the channel states in 3d mimo are disclosed. One aspect of the present invention relates to user equipment for implementing 3d mimo (3-dimensional multiple-input multiple-output) communication, comprising: a channel state information generation unit configured to measure channel states of antenna ports of 3d mimo antennas in a base station with reference signals transmitted from the antenna ports and generate channel state information based on the measured channel states; and a channel state information feedback unit configured to use different channel state information feedback means for antenna ports in respective dimensions of the antennas to feed the generated channel state information back to the base station.. ... Ntt Docomo Inc
User terminal, radio base station and radio communication method
In order to minimize reduction of the usage efficiency of radio resources even when a radio base station performs lbt in an lte/lte-a operating system, the present invention provides a user terminal capable of communicating with a radio base station of a given operator using an unlicensed band. The user terminal has: an obtaining section that obtains a plmn-id (public land mobile network identifier) of a cell that is detected in a cell search; a detecting section that detects the cell of an other operator cell that is different from the given operator based on the plmn-id; and a transmission section that transmits an identifier to specify the cell of the other operator and the plmn-id of the other operator to the radio base station.. ... Ntt Docomo Inc
User terminal, radio base station and radio communication method
In order to prevent deterioration in communication quality even when lbt applies to ul transmission, the present invention provides a user terminal that has: a transmission section that transmits a transmission acknowledgement signal for a dl (downlink) data signal transmitted from a radio base station; and a control section that controls transmission of the transmission acknowledgement signal based on an lbt (listen before talk) result in uplink. When transmitting the transmission acknowledgement signal in a given ul (uplink) subframe, the control section determines a feedback timing of the transmission acknowledgement signal in accordance with the lbt result in a ul subframe prior to the given ul subframe.. ... Ntt Docomo Inc
User apparatus and buffer control method
A user apparatus communicates with a base station in a mobile communication system which includes cells including a first cell and a second cell which uses a tti different from that of the first cell, includes a reception unit with a buffer for, in the case where decoding of downlink data received from the base station has failed, storing the downlink data in the buffer, and combining the downlink data stored in the buffer and retransmitted data transmitted from the base station based on acknowledgment information for the downlink data, and decoding the combined result; and a transmission unit for transmitting the acknowledgment information for the downlink data to the base station. The reception unit includes a buffer control unit for dividing the buffer with a dividing number based on the ttis of the first and second cells, and storing the downlink data in divided areas of the buffer.. ... Ntt Docomo Inc
User apparatus, base station, and uplink transmission power reporting method
A user apparatus in a mobile communication system that includes a first and second base station that perform communication with the user apparatus by inter-base station carrier aggregation. The user apparatus includes a setting information reception unit that receives, from the first base station, first setting information for instructing whether to report uplink transmission power information to the first base station, and second setting information for instructing whether to report uplink transmission power information to the second base station. ... Ntt Docomo Inc
User apparatus and base station
A user apparatus is provided. The user apparatus is included in a mobile communication system including a first base station, a second base station communicating with the first base station, and the user apparatus communicating with the first base station. ... Ntt Docomo Inc
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