[go: up one dir, main page]

WO2014192629A1 - Terminal utilisateur, station de base et processeur - Google Patents

Terminal utilisateur, station de base et processeur Download PDF

Info

Publication number
WO2014192629A1
WO2014192629A1 PCT/JP2014/063576 JP2014063576W WO2014192629A1 WO 2014192629 A1 WO2014192629 A1 WO 2014192629A1 JP 2014063576 W JP2014063576 W JP 2014063576W WO 2014192629 A1 WO2014192629 A1 WO 2014192629A1
Authority
WO
WIPO (PCT)
Prior art keywords
user terminal
data amount
communication
base station
amount information
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/JP2014/063576
Other languages
English (en)
Japanese (ja)
Inventor
憲由 福田
空悟 守田
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Kyocera Corp
Original Assignee
Kyocera Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Kyocera Corp filed Critical Kyocera Corp
Publication of WO2014192629A1 publication Critical patent/WO2014192629A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Images

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/50—Allocation or scheduling criteria for wireless resources
    • H04W72/52—Allocation or scheduling criteria for wireless resources based on load
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W92/00—Interfaces specially adapted for wireless communication networks
    • H04W92/16—Interfaces between hierarchically similar devices
    • H04W92/18—Interfaces between hierarchically similar devices between terminal devices

Definitions

  • the present invention relates to a user terminal, a base station, and a processor in a mobile communication system that supports D2D communication.
  • D2D communication a plurality of adjacent user terminals perform direct communication without going through a base station. That is, the data path of D2D communication does not go through the base station.
  • a data path for normal communication (cellular communication) of a mobile communication system passes through a base station.
  • the network including the base station can know the amount of data transmitted and received in the cellular communication.
  • the present invention provides a user terminal, a base station, and a processor that allow a network to know the amount of data transmitted and received in D2D communication.
  • the user terminal is a user terminal in a mobile communication system that supports D2D communication that is direct inter-terminal communication.
  • the user terminal has a control unit that performs the D2D communication using a radio resource allocated from the base station in a state where the connection between the user terminal and the base station is established, and an amount of data transmitted or received in the D2D communication
  • a transmission unit that transmits data amount information indicating at least one of the information to the base station.
  • the network can know the amount of data transmitted and received in D2D communication.
  • FIG. 1 is a configuration diagram of an LTE system.
  • FIG. 2 is a block diagram of the UE.
  • FIG. 3 is a block diagram of the eNB.
  • FIG. 4 is a protocol stack diagram of a radio interface in the LTE system.
  • FIG. 5 is a configuration diagram of a radio frame used in the LTE system.
  • FIG. 6 is a diagram illustrating a data path in cellular communication.
  • FIG. 7 is a diagram illustrating a data path in D2D communication.
  • FIG. 8 is a sequence diagram showing an operation example of the mobile communication system according to the first embodiment.
  • FIG. 9 is a sequence diagram showing an operation example of the mobile communication system according to the second embodiment.
  • FIG. 10 is a sequence diagram showing an operation example of the mobile communication system according to the third embodiment.
  • the user terminals according to the first to third embodiments are user terminals in a mobile communication system that supports D2D communication that is direct inter-terminal communication.
  • the user terminal has a control unit that performs the D2D communication using a radio resource allocated from the base station in a state where the connection between the user terminal and the base station is established, and an amount of data transmitted or received in the D2D communication
  • a transmission unit that transmits data amount information indicating at least one of the information to the base station.
  • the user terminal further includes a reception unit that receives, from the base station, period information indicating a period at which the user terminal transmits the data amount information.
  • the transmission unit transmits the data amount information based on the period information.
  • the user terminal further includes a receiving unit that receives a request for causing the user terminal to transmit the data amount information from the base station.
  • the transmission unit transmits the data amount information based on the request.
  • control unit includes a transmission buffer dedicated to D2D that holds untransmitted data that is data waiting to be transmitted in the D2D communication, and the transmission unit is a buffer related to the transmission buffer. The data amount information is transmitted together with the status report.
  • the transmission unit uses, as the data amount information, a ratio of used radio resources used by the user terminal in the D2D communication to the radio resources allocated from the base station. Radio resource usage rate is transmitted.
  • control unit converts the data amount into the index using a table in which the data amount and the index are associated with each other, and the transmission unit transmits the data
  • the index is transmitted as quantity information.
  • the transmission unit transmits the data amount information on behalf of the user terminal and another user terminal that is performing the D2D communication with the user terminal.
  • the base station is a base station in a mobile communication system that supports D2D communication that is direct inter-terminal communication.
  • the base station allocates radio resources to the user terminal in a state where the connection between the user terminal and the base station is established, and controls the D2D communication, and the user terminal transmits or transmits the D2D communication in the D2D communication.
  • a receiving unit that receives data amount information indicating at least one of the received data amounts from the user terminal.
  • the said base station is further provided with the transmission part which transmits the period information which shows the period when the said user terminal transmits the said data amount information to the said user terminal,
  • the said receiving part is based on the said period information. And receiving the data amount information.
  • the base station further includes a transmission unit that requests the user terminal to transmit the data amount information.
  • the receiving unit transmits the data amount information to the user terminal together with a buffer status report related to a D2D-dedicated transmission buffer that holds untransmitted data that is data to be transmitted in the D2D communication.
  • the control unit allocates the radio resource to the user terminal based on the data amount information and the buffer status report.
  • the reception unit uses, as the data amount information, a ratio of used radio resources used by the user terminal in the D2D communication to the radio resources allocated from the base station.
  • the control unit calculates the amount of data using the radio resource usage rate and the radio resource allocated to the user terminal.
  • the reception unit receives an index as the data amount information, and the control unit associates the index, the data amount, and the index.
  • the data amount is calculated using a table.
  • the processor is a processor provided in a user terminal in a mobile communication system that supports D2D communication that is direct inter-terminal communication.
  • the processor performs a process of performing the D2D communication using a radio resource allocated from the base station in a state in which a connection between the user terminal and the base station is established, and an amount of data transmitted or received in the D2D communication A process of transmitting data amount information indicating at least one of the above to the base station is executed.
  • LTE system cellular mobile communication system
  • FIG. 1 is a configuration diagram of an LTE system according to the present embodiment.
  • the LTE system includes a plurality of UEs (User Equipment) 100, an E-UTRAN (Evolved Universal Terrestrial Radio Access Network) 10, an EPC (Evolved Packet Core) 20, and the like.
  • the E-UTRAN 10 and the EPC 20 constitute a network.
  • the UE 100 is a mobile radio communication device, and performs radio communication with a cell (serving cell) that has established a connection.
  • UE100 is corresponded to a user terminal.
  • the E-UTRAN 10 includes a plurality of eNBs 200 (evolved Node-B).
  • the eNB 200 corresponds to a base station.
  • the eNB 200 manages a cell and performs radio communication with the UE 100 that has established a connection with the cell.
  • cell is used as a term indicating a minimum unit of a radio communication area, and is also used as a term indicating a function of performing radio communication with the UE 100.
  • the eNB 200 has, for example, a radio resource management (RRM) function, a user data routing function, and a measurement control function for mobility control and scheduling.
  • RRM radio resource management
  • the EPC 20 includes MME (Mobility Management Entity) / S-GW (Serving-Gateway) 300 and OAM (Operation and Maintenance) 400.
  • MME Mobility Management Entity
  • S-GW Serving-Gateway
  • OAM Operaation and Maintenance
  • the MME is a network node that performs various types of mobility control for the UE 100, and corresponds to a control station.
  • the S-GW is a network node that performs transfer control of user data, and corresponds to an exchange.
  • the eNB 200 is connected to each other via the X2 interface.
  • the eNB 200 is connected to the MME / S-GW 300 via the S1 interface.
  • the OAM 400 is a server device managed by an operator, and performs maintenance and monitoring of the E-UTRAN 10.
  • FIG. 2 is a block diagram of the UE 100.
  • the UE 100 includes an antenna 101, a radio transceiver 110, a user interface 120, a GNSS (Global Navigation Satellite System) receiver 130, a battery 140, a memory 150, and a processor 160.
  • the memory 150 and the processor 160 constitute a control unit.
  • the UE 100 may not have the GNSS receiver 130. Further, the memory 150 may be integrated with the processor 160, and this set (that is, a chip set) may be used as the processor 160 'that constitutes the control unit.
  • the antenna 101 and the wireless transceiver 110 are used for transmitting and receiving wireless signals.
  • the antenna 101 includes a plurality of antenna elements.
  • the radio transceiver 110 converts the baseband signal output from the processor 160 into a radio signal and transmits it from the antenna 101. Further, the radio transceiver 110 converts a radio signal received by the antenna 101 into a baseband signal and outputs the baseband signal to the processor 160.
  • the user interface 120 is an interface with a user who owns the UE 100, and includes, for example, a display, a microphone, a speaker, and various buttons.
  • the user interface 120 receives an operation from the user and outputs a signal indicating the content of the operation to the processor 160.
  • the GNSS receiver 130 receives a GNSS signal and outputs the received signal to the processor 160 in order to obtain position information indicating the geographical position of the UE 100.
  • the battery 140 stores power to be supplied to each block of the UE 100.
  • the memory 150 stores a program executed by the processor 160 and information used for processing by the processor 160.
  • the memory 150 has a D2D-dedicated transmission buffer that holds untransmitted data that is data waiting to be transmitted in D2D communication.
  • the processor 160 includes a baseband processor that modulates / demodulates and encodes / decodes a baseband signal, and a CPU (Central Processing Unit) that executes programs stored in the memory 150 and performs various processes. .
  • the processor 160 may further include a codec that performs encoding / decoding of an audio / video signal.
  • the processor 160 executes various processes and various communication protocols described later.
  • FIG. 3 is a block diagram of the eNB 200.
  • the eNB 200 includes an antenna 201, a radio transceiver 210, a network interface 220, a memory 230, and a processor 240.
  • the memory 230 and the processor 240 constitute a control unit.
  • the memory 230 may be integrated with the processor 240, and this set (that is, a chip set) may be used as the processor 240 'that constitutes the control unit.
  • the antenna 201 and the wireless transceiver 210 are used for transmitting and receiving wireless signals.
  • the antenna 201 includes a plurality of antenna elements.
  • the wireless transceiver 210 converts the baseband signal output from the processor 240 into a wireless signal and transmits it from the antenna 201.
  • the radio transceiver 210 converts a radio signal received by the antenna 201 into a baseband signal and outputs the baseband signal to the processor 240.
  • the network interface 220 is connected to the neighboring eNB 200 via the X2 interface and is connected to the MME / S-GW 300 via the S1 interface.
  • the network interface 220 is used for communication performed on the X2 interface and communication performed on the S1 interface.
  • the memory 230 stores a program executed by the processor 240 and information used for processing by the processor 240.
  • the processor 240 includes a baseband processor that performs modulation / demodulation and encoding / decoding of a baseband signal, and a CPU that executes programs stored in the memory 230 and performs various processes.
  • the processor 240 executes various processes and various communication protocols described later.
  • FIG. 4 is a protocol stack diagram of a radio interface in the LTE system.
  • the radio interface protocol is divided into layers 1 to 3 of the OSI reference model, and layer 1 is a physical (PHY) layer.
  • Layer 2 includes a MAC (Media Access Control) layer, an RLC (Radio Link Control) layer, and a PDCP (Packet Data Convergence Protocol) layer.
  • Layer 3 includes an RRC (Radio Resource Control) layer.
  • the physical layer performs encoding / decoding, modulation / demodulation, antenna mapping / demapping, and resource mapping / demapping.
  • the physical layer provides a transmission service to an upper layer using a physical channel. Data is transmitted between the physical layer of the UE 100 and the physical layer of the eNB 200 via a physical channel.
  • the MAC layer performs data priority control, retransmission processing by hybrid ARQ (HARQ), and the like. Data is transmitted via the transport channel between the MAC layer of the UE 100 and the MAC layer of the eNB 200.
  • the MAC layer of the eNB 200 includes a MAC scheduler that determines an uplink / downlink transport format (transport block size, modulation / coding scheme, and the like) and an allocated resource block.
  • the RLC layer transmits data to the RLC layer on the receiving side using the functions of the MAC layer and the physical layer. Data is transmitted between the RLC layer of the UE 100 and the RLC layer of the eNB 200 via a logical channel.
  • the PDCP layer performs header compression / decompression and encryption / decryption.
  • the RRC layer is defined only in the control plane. Control signals (RRC messages) for various settings are transmitted between the RRC layer of the UE 100 and the RRC layer of the eNB 200.
  • the RRC layer controls the logical channel, the transport channel, and the physical channel according to establishment, re-establishment, and release of the radio bearer. If there is an RRC connection between the RRC of the UE 100 and the RRC of the eNB 200, the UE 100 is in a connected state, otherwise, the UE 100 is in an idle state.
  • the NAS (Non-Access Stratum) layer located above the RRC layer performs session management and mobility management.
  • FIG. 5 is a configuration diagram of a radio frame used in the LTE system.
  • the LTE system uses OFDMA (Orthogonal Frequency Division Multiplexing Access) for the downlink and SC-FDMA (Single Carrier Division Multiple Access) for the uplink.
  • OFDMA Orthogonal Frequency Division Multiplexing Access
  • SC-FDMA Single Carrier Division Multiple Access
  • the radio frame is composed of 10 subframes arranged in the time direction, and each subframe is composed of two slots arranged in the time direction.
  • the length of each subframe is 1 ms, and the length of each slot is 0.5 ms.
  • Each subframe includes a plurality of resource blocks (RB) in the frequency direction and includes a plurality of symbols in the time direction.
  • a guard interval called a cyclic prefix (CP) is provided at the head of each symbol.
  • the resource block includes a plurality of subcarriers in the frequency direction.
  • a radio resource unit composed of one subcarrier and one symbol is called a resource element (RE).
  • RE resource element
  • frequency resources can be specified by resource blocks, and time resources can be specified by subframes (or slots).
  • the section of the first few symbols of each subframe is a control region mainly used as a physical downlink control channel (PDCCH).
  • the remaining section of each subframe is an area that can be used mainly as a physical downlink shared channel (PDSCH).
  • PDSCH physical downlink shared channel
  • CRS cell-specific reference signals
  • both ends in the frequency direction in each subframe are control regions mainly used as a physical uplink control channel (PUCCH). Further, the central portion in the frequency direction in each subframe is an area that can be used mainly as a physical uplink shared channel (PUSCH). Further, a demodulation reference signal (DMRS) and a sounding reference signal (SRS) are arranged in each subframe.
  • DMRS demodulation reference signal
  • SRS sounding reference signal
  • D2D communication Next, normal communication (cellular communication) of the LTE system and D2D communication will be compared and described.
  • FIG. 6 is a diagram showing a data path in cellular communication.
  • a data path means a transfer path of user data (user plane).
  • the data path of cellular communication goes through the network. Specifically, a data path passing through the eNB 200-1, the S-GW 300, and the eNB 200-2 is set.
  • FIG. 7 is a diagram showing a data path in D2D communication. Here, a case where D2D communication is performed between the UE 100-1 that has established a connection with the eNB 200-1 and the UE 100-2 that has established a connection with the eNB 200-2 is illustrated.
  • the D2D communication is started.
  • the UE 100 has a function of discovering another UE 100 existing in the vicinity of the UE 100 (Discover). Further, the UE 100 has a (Discoverable) function that is discovered from other UEs 100.
  • the data path of D2D communication does not go through the network. That is, direct radio communication is performed between UEs.
  • direct radio communication is performed between UEs.
  • the network traffic load and the battery consumption of the UE 100 are reduced by performing D2D communication between the UE 100-1 and the UE 100-2. The effect of doing etc. is acquired.
  • FIG. 8 is a sequence diagram showing an operation example of the mobile communication system according to the first embodiment.
  • the UE 100-1 and the UE 100-2 have established a connection with a cell managed by the eNB 200.
  • the eNB 200 controls D2D communication between the UE 100-1 and the UE 100-2. Therefore, the eNB 200 allocates radio resources for the UE 100-1 and the UE 100-2 to perform D2D communication, and transmits scheduling information indicating the allocated radio resources to the UE 100-1 and the UE 100-2.
  • the UE 100-1 and the UE 100-2 perform D2D communication using the assigned radio resource.
  • step S101 the eNB 200, the UE 100-1, and the UE 100-2 execute a D2D setup process in order to perform D2D communication between the UE 100-1 and the UE 100-2.
  • the UE 100-1 and the UE 100-2 establish a D2D link between the UE 100-1 and the UE 100-2.
  • eNB 200 and UE 100 set a radio bearer (D2D control radio bearer) used for control of D2D communication between eNB 200 and UE 100.
  • This radio bearer for D2D control may be a dedicated radio bearer used only for D2D communication, or may be a shared radio bearer used for cellular communication and D2D communication.
  • Each of the UE 100-1 and the UE 100-2 uses a radio bearer for D2D control, and QCI (QoS Class) that is an identifier of an application used in D2D communication or an identifier of communication quality (that is, QoS) required for the application. IDIdentifier) is transmitted to the eNB 200.
  • QCI QoS Class
  • IDIdentifier is transmitted to the eNB 200.
  • the eNB 200 allocates radio resources in D2D communication according to application identifiers or application characteristics based on QCI.
  • eNB200 allocates the radio
  • the eNB 200 when traffic by an application used for D2D communication is high load and continuous (for example, when streaming or the like), the eNB 200 periodically allocates dedicated radio resources to D2D communication. Thereby, a large amount of traffic can be transmitted in D2D communication.
  • the eNB 200 transmits dedicated radio resources periodically and repeatedly. Assign as possible. Thereby, a large amount of traffic can be transmitted in D2D communication, and the reliability of communication can be increased.
  • the repeated transmission is not limited to a method in which the same data is repeatedly transmitted a plurality of times, but may be a method in which redundant bits are changed each time transmission is performed (for example, an incremental redundancy method).
  • the eNB 200 can, for example, store a table in which an application identifier and its characteristics are associated with each other in advance, and can grasp the application characteristics by using the table.
  • the UE 100-1 and the UE 100-2 start D2D communication using the allocated radio resources after establishing the D2D link.
  • step S102 the eNB 200 transmits period information in order to cause each of the UE 100-1 and the UE 100-2 to transmit data amount information.
  • Each of UE100-1 and UE100-2 receives period information.
  • Cycle information indicates the cycle of transmitting data amount information. For example, the period information instructs to transmit data amount information every time a predetermined time has elapsed since the start of D2D communication, or instructs to transmit data amount information every time a predetermined time comes. Information.
  • the period information is not necessarily a constant period, and may be information instructing to transmit the data amount information every time the data amount reaches a predetermined value, for example. Further, the period information may be information instructing transmission at a predetermined timing that the UE 100 and the eNB 200 recognize in advance.
  • each of the UE 100-1 and the UE 100-2 transmits data amount information to the eNB 200.
  • the eNB 200 receives data amount information from each of the UE 100-1 and the UE 100-2.
  • Each of the UE 100-1 and the UE 100-2 transmits data amount information to the eNB 200 at a timing indicated by the period information using the radio bearer for D2D control.
  • the eNB 200 receives the data amount information from each of the UE 100-1 and the UE 100-2 at the timing indicated by the period information using the radio bearer for D2D control.
  • the data amount information indicates at least one of the data amounts transmitted or received in the D2D communication. Therefore, the data amount information indicates the amount of data transmitted in D2D communication, the amount of data received in D2D communication, or the amount of data transmitted / received in D2D communication.
  • the data amount in the D2D communication is appropriately referred to as a D2D data amount.
  • the data amount information may be one in which the D2D data amount is indicated by a direct value, or may be indicated by an indirect value corresponding to the D2D data amount.
  • Wireless resources that is, each of UE 100-1 and UE 100-2 may transmit a radio resource usage rate as data amount information.
  • the eNB 200 calculates the D2D data amount using the radio resource usage rate and the allocated radio resource.
  • the UE 100-1, and the UE 100-2 when each of the eNB 200, the UE 100-1, and the UE 100-2 stores a table in which the D2D data amount and the index are associated with each other, the UE 100-1 and the UE 100-2 each have data amount information as An index may be transmitted. That is, UE 100-1 and UE 100-2 convert the D2D data amount into an index using the table, and transmit the index to eNB 200. When receiving the index, the eNB 200 calculates the D2D data amount using the received index and the stored table.
  • step S104 as in step S103, each of the UE 100-1 and the UE 100-2 transmits data amount information to the eNB 200.
  • the eNB 200 receives data amount information from each of the UE 100-1 and the UE 100-2.
  • step S104 is repeated until the D2D communication is completed.
  • the eNB 200 may transmit the data amount information to a higher-level device of the eNB 200 (for example, a server that manages MME, D2D communication, etc.), and holds until a request is received from the higher-level device of the eNB 200 You may keep it.
  • a higher-level device of the eNB 200 for example, a server that manages MME, D2D communication, etc.
  • the network including the eNB 200 and the host device of the eNB 200 can know the D2D data amount. As a result, for example, a charge plan that charges based on the amount of D2D data can be realized.
  • each of the UE 100-1 and the UE 100-2 transmits data amount information using the D2D control radio bearer when the D2D communication is completed. Thereafter, the D2D control radio bearer is released.
  • each of the UE 100-1 and the UE 100-2 transmits data amount information to the eNB 200.
  • the eNB 200 (radio transceiver 210) receives the data amount information from each of the UE 100-1 and the UE 100-2. Thereby, eNB200 can know D2D data amount by receiving data amount information.
  • the eNB 200 (radio transceiver 210) transmits period information to each of the UE 100-1 and UE 100-2, and each of the UE 100-1 and UE 100-2 (radio transceiver 110) Information is received from the eNB 200.
  • Each of the UE 100-1 and the UE 100-2 transmits data amount information from the eNB 200 based on the period information, and the eNB 200 receives the data amount information based on the period information.
  • each of the UE 100-1 and the UE 100-2 transmits a radio resource usage rate as data amount information.
  • the eNB 200 (radio transceiver 210) receives the radio resource usage rate.
  • the eNB 200 (control unit) calculates the data amount using the radio resource usage rate and the assigned radio resource. Thereby, the data amount of the data amount information transmitted / received between eNB200 and UE100 can be reduced.
  • each of the UE 100-1 and the UE 100-2 converts the D2D data amount into an index using a table in which the D2D data amount and the index are associated with each other.
  • Each of UE 100-1 and UE 100-2 (radio transceiver 110) transmits the converted index as data amount information.
  • eNB200 (radio
  • the eNB 200 (control unit) calculates the D2D data amount by using an index, a table in which the D2D data amount and the index are associated with each other. Thereby, the data amount of the data amount information transmitted / received between eNB200 and UE100 can be reduced.
  • FIG. 9 is a sequence diagram showing an operation example of the mobile communication system according to the second embodiment.
  • it demonstrates centering on a different part from embodiment mentioned above, and abbreviate
  • the eNB 200 transmits period information to each of the UE 100-1 and the UE 100-2, and each of the UE 100-1 and UE 100-2 transmits data amount information based on the period information. It was. In the present embodiment, each of the UE 100-1 and the UE 100-2 transmits data amount information based on a request from the eNB 200.
  • UE 100-1 and UE 100-2 are performing D2D communication.
  • step S201 the eNB 200 transmits a data amount request for requesting transmission of data amount information to each of the UE 100-1 and the UE 100-2.
  • the UE 100-1 and the UE 100-2 receives the data amount request.
  • the eNB 200 can transmit a data amount request under a predetermined condition. For example, the eNB 200 transmits a data amount request when the traffic amount of the eNB 200 becomes a predetermined value or less. Further, the eNB 200 may transmit the data amount request when the D2D communication between the UE 100-1 and the UE 100-2 is completed.
  • each of the UE 100-1 and the UE 100-2 transmits data amount information to the eNB 200 when receiving the data amount request.
  • the eNB 200 receives the data amount information.
  • step S203 as in step S201, the eNB 200 transmits a data amount request to each of the UE 100-1 and the UE 100-2.
  • step S204 as in step S202, each of the UE 100-1 and the UE 100-2 transmits data amount information to the eNB 200.
  • steps S203 and S204 are repeated until the D2D communication is completed.
  • the eNB 200 (radio transceiver 210) transmits a data amount request to each of the UE 100-1 and the UE 100-2.
  • Each of the UE 100-1 and the UE 100-2 (radio transceiver 110) receives the data amount request and transmits data amount information based on the data amount request.
  • eNB200 can control transmission of the data amount information of UE100-1 and UE100-2.
  • FIG. 10 is a sequence diagram showing an operation example of the mobile communication system according to the third embodiment.
  • it demonstrates centering on a different part from embodiment mentioned above, and abbreviate
  • the UE 100-1 and the UE 100-2 transmit data amount information.
  • the UE 100-1 and the UE 100-2 transmit a buffer status report in addition to the data amount information.
  • each of the UE 100-1 and the UE 100-2 transmits data amount information to the eNB 200 together with the buffer status report.
  • the eNB 200 receives the data amount information together with the buffer status report.
  • Each of UE 100-1 and UE 100-2 has a D2D-dedicated transmission buffer that holds untransmitted data (transmission buffer retention amount) that is data waiting to be transmitted in D2D communication.
  • the buffer status report (BSR) is a report regarding the transmission buffer.
  • step S302 the eNB 200 allocates radio resources used for D2D communication to the UE 100-1 and the UE 100-2 based on the data amount information and the buffer status report (performs scheduling).
  • the eNB 200 changes the allocated radio resource amount according to the D2D data amount indicated by the data amount information and the transmission buffer retention amount indicated by the buffer status report. For example, the eNB 200 periodically allocates dedicated radio resources when the D2D data amount is equal to or greater than the threshold value and the transmission buffer retention amount is equal to or greater than the threshold value. On the other hand, when the D2D data amount is less than the threshold value and the transmission buffer retention amount is less than the threshold value, the eNB 200 allocates a radio resource shared with another group performing D2D communication.
  • step S303 the eNB 200 transmits scheduling information indicating the radio resources allocated based on the data amount information and the buffer status report to each of the UE 100-1 and the UE 100-2.
  • Each of UE 100-1 and UE 100-2 receives scheduling information.
  • UE 100-1 and UE 100-2 perform D2D communication using the radio resource indicated by the scheduling information.
  • step S304 as in step S301, each of the UE 100-1 and the UE 100-2 transmits data amount information to the eNB 200 together with the buffer status report.
  • step S305 as in step S302, the eNB 200 allocates radio resources used for D2D communication to the UE 100-1 and the UE 100-2 based on the data amount information and the buffer status report received in step S304.
  • step S306 as in step S303, the eNB 200 transmits scheduling information indicating the radio resource allocated in step S305 to each of the UE 100-1 and the UE 100-2.
  • steps S304 to S306 are repeated until the D2D communication is completed.
  • each of the UE 100-1 and the UE 100-2 (control unit) holds a D2D-dedicated transmission buffer that holds a transmission buffer retention amount.
  • Each of UE 100-1 and UE 100-2 (radio transceiver 110) transmits data amount information together with a buffer status report.
  • eNB200 (radio
  • the eNB 200 (control unit) allocates radio resources to the UE 100-1 and the UE 100-2 based on the data amount information and the buffer status report. Thereby, since eNB200 can grasp
  • the eNB 200 transmits the period information after the D2D setup is completed, but is not limited thereto.
  • the eNB 200 may transmit period information during D2D setup.
  • each of the UE 100-1 and the UE 100-2 transmits data amount information using a radio bearer, but the present invention is not limited to this.
  • the eNB 200 may transmit at least one of the above-described period information, data amount request, and scheduling information to each of the UE 100-1 and the UE 100-2 using the D2D control radio bearer.
  • each of the UE 100-1 and the UE 100-2 may transmit the data amount information together with the buffer status report using the D2D control radio bearer.
  • each of the UE 100-1 and the UE 100-2 transmits data amount information
  • the eNB 200 receives the data amount information from each of the UE 100-1 and UE 100-2.
  • the UE 100-1 may transmit the data amount information on behalf of the UE 100-1 and the UE 100-2. That is, UE 100-1 is anchor UE 100 that performs communication with eNB 200 as a representative for D2D communication.
  • eNB200 can abbreviate
  • the eNB 200 when the anchor UE 100 is present, the eNB 200 only needs to set the D2D control radio bearer only with the anchor UE 100, so that the load on the eNB 200 can be reduced.
  • the anchor UE 100 may receive not only data amount information but also scheduling information as a representative.
  • each of the UE 100-1 and the UE 100-2 transmits the data amount information and the buffer status report to the eNB 200, but is not limited thereto.
  • Each of UE 100-1 and UE 100-2 may transmit a buffer status report (only) to eNB 200 instead of the data amount information.
  • each of the UE 100-1 and the UE 100-2 transmits a buffer status report to the eNB 200 each time the untransmitted data in the D2D communication held in the transmission buffer is updated. That is, each of the UE 100-1 and the UE 100-2 creates and transmits a buffer status report each time new untransmitted data that is not held in the transmission buffer when the previous buffer status report is created.
  • the eNB 200 may estimate the data amount transmitted / received in the D2D communication by accumulating the data amount of the untransmitted data obtained by the buffer status report transmitted from each of the UE 100-1 and the UE 100-2.
  • information indicating untransmitted data in D2D communication is not information indicating at least one of data amounts already transmitted or received in D2D communication, and thus does not correspond to data amount information.
  • the present invention is not limited to the LTE system, and the present invention may be applied to a system other than the LTE system.
  • the user terminal, the base station, and the processor according to the present invention are useful in the mobile communication field because the network can know the amount of data transmitted and received in D2D communication.

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Telephone Function (AREA)

Abstract

Le terminal utilisateur d'après la présente invention fait partie d'un système de communication mobile qui prend en charge une communication D2D, autrement dit une communication directe de terminal à terminal. Ledit terminal utilisateur comprend : une unité de commande qui, grâce à une connexion établie entre le terminal utilisateur et une station de base, utilise une ressource sans fil attribuée par ladite station de base pour mettre en œuvre une communication D2D ; et une unité de transmission qui transmet à la station de base des informations sur la quantité de données indiquant la quantité de données transmise et/ou reçue à titre de partie de ladite communication D2D.
PCT/JP2014/063576 2013-05-29 2014-05-22 Terminal utilisateur, station de base et processeur Ceased WO2014192629A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2013-113507 2013-05-29
JP2013113507A JP2014233012A (ja) 2013-05-29 2013-05-29 ユーザ端末、基地局及びプロセッサ

Publications (1)

Publication Number Publication Date
WO2014192629A1 true WO2014192629A1 (fr) 2014-12-04

Family

ID=51988662

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2014/063576 Ceased WO2014192629A1 (fr) 2013-05-29 2014-05-22 Terminal utilisateur, station de base et processeur

Country Status (2)

Country Link
JP (1) JP2014233012A (fr)
WO (1) WO2014192629A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2016117199A1 (fr) * 2015-01-20 2016-07-28 ソニー株式会社 Dispositif de communication sans fil, et procédé et programme de traitement d'informations
JP6473225B2 (ja) * 2015-03-31 2019-02-20 株式会社Ｎｔｔドコモ ユーザ装置
WO2017156790A1 (fr) * 2016-03-18 2017-09-21 广东欧珀移动通信有限公司 Procédé et dispositif d2d utilisés pour des communications d2d

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20080212524A1 (en) * 2004-04-30 2008-09-04 Kazuhito Niwano Mobile Station, Base Station, Communication System, Amount-of-Data Information Transmission Method, Transmission-Control-Information Notification Method, and Wireless Communication Method
US20090137242A1 (en) * 2007-11-26 2009-05-28 Ntt Docomo, Inc. Transmission rate control method, mobile communication system and radio base station
WO2010097645A1 (fr) * 2009-02-24 2010-09-02 Nokia Corporation Saut temporel permettant une limitation du brouillage proche-lointain dans des communications de dispositif à dispositif
WO2011143496A1 (fr) * 2010-05-12 2011-11-17 Qualcomm Incorporated Coordination des ressources pour des groupes poste à poste au moyen d'une négociation distribuée
WO2012166969A1 (fr) * 2011-06-01 2012-12-06 Ntt Docomo, Inc. Accès local amélioré dans des communications mobiles

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20080212524A1 (en) * 2004-04-30 2008-09-04 Kazuhito Niwano Mobile Station, Base Station, Communication System, Amount-of-Data Information Transmission Method, Transmission-Control-Information Notification Method, and Wireless Communication Method
US20090137242A1 (en) * 2007-11-26 2009-05-28 Ntt Docomo, Inc. Transmission rate control method, mobile communication system and radio base station
WO2010097645A1 (fr) * 2009-02-24 2010-09-02 Nokia Corporation Saut temporel permettant une limitation du brouillage proche-lointain dans des communications de dispositif à dispositif
WO2011143496A1 (fr) * 2010-05-12 2011-11-17 Qualcomm Incorporated Coordination des ressources pour des groupes poste à poste au moyen d'une négociation distribuée
WO2012166969A1 (fr) * 2011-06-01 2012-12-06 Ntt Docomo, Inc. Accès local amélioré dans des communications mobiles

Also Published As

Publication number Publication date
JP2014233012A (ja) 2014-12-11

Similar Documents

Publication Publication Date Title
JP6239280B2 (ja) ユーザ端末、プロセッサ及び移動通信システム
JP5826937B2 (ja) 移動通信システム、基地局、ユーザ端末、及びプロセッサ
JP6306753B2 (ja) 制御方法、ユーザ端末、プロセッサ、及び基地局
JP6687452B2 (ja) 移動通信システム、ユーザ端末、プロセッサ、記憶媒体及びプログラム
JP5933807B2 (ja) ネットワーク装置及びプロセッサ
JP6147844B2 (ja) 移動通信システム、基地局、ユーザ端末及びプロセッサ
US10098162B2 (en) Mobile communication system, user terminal, base station, processor, and communication control method
JP5905575B2 (ja) 通信制御方法及び基地局
WO2014050557A1 (fr) Système de communication mobile, station de base et terminal utilisateur
JP5842061B2 (ja) 移動通信システム、ユーザ端末、及びプロセッサ
JPWO2013183731A1 (ja) 通信制御方法、基地局、ユーザ端末、プロセッサ、及び記憶媒体
US10264557B2 (en) User terminal and processor performing D2D communication
JP6140292B2 (ja) ネットワーク装置及びユーザ端末
WO2014192629A1 (fr) Terminal utilisateur, station de base et processeur
JP6392964B2 (ja) 通信方法、無線端末、及びプロセッサ
WO2014192632A1 (fr) Station de base, terminal utilisateur et processeur
US9955496B2 (en) Mobile communication system, user terminal, and network apparatus

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 14804921

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 14804921

Country of ref document: EP

Kind code of ref document: A1