WO2016070615A1 - Procédé de transmission de données de dispositif à dispositif (d2d), appareil, et ue d2d - Google Patents

Procédé de transmission de données de dispositif à dispositif (d2d), appareil, et ue d2d Download PDF

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Publication number
WO2016070615A1
WO2016070615A1 PCT/CN2015/080513 CN2015080513W WO2016070615A1 WO 2016070615 A1 WO2016070615 A1 WO 2016070615A1 CN 2015080513 W CN2015080513 W CN 2015080513W WO 2016070615 A1 WO2016070615 A1 WO 2016070615A1
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WIPO (PCT)
Prior art keywords
pdcp
indication information
header compression
encryption
pdu
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PCT/CN2015/080513
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English (en)
Chinese (zh)
Inventor
黄莹
陈琳
塞尔吉奥•帕洛拉里
吴栓栓
Original Assignee
中兴通讯股份有限公司
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Priority claimed from CN201410693713.0A external-priority patent/CN105704641B/zh
Application filed by 中兴通讯股份有限公司 filed Critical 中兴通讯股份有限公司
Publication of WO2016070615A1 publication Critical patent/WO2016070615A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W28/00—Network traffic management; Network resource management
    • H04W28/02—Traffic management, e.g. flow control or congestion control
    • H04W28/06—Optimizing the usage of the radio link, e.g. header compression, information sizing, discarding information

Definitions

  • FIG. 1 is a schematic diagram of an application mode of a D2D technology in the related art. As shown in FIG. 1 , there are three main application scenarios of the D2D:
  • UE relay transmission in the weak/uncovered area allows UE4 with poor signal quality to communicate with the network through UE3 with network coverage nearby, which can help operators expand coverage and increase capacity. ;
  • D2D discovery technology refers to determining/determining the proximity between two or more D2D user equipments (for example, within a range in which D2D direct communication is possible) or for determining/determining that a first user equipment is adjacent to a second user.
  • Equipment technology refers to determining/determining the proximity between two or more D2D user equipments (for example, within a range in which D2D direct communication is possible) or for determining/determining that a first user equipment is adjacent to a second user.
  • D2D communication technology refers to a technology in which some or all of the communication data between D2D user equipments can communicate directly without going through the network infrastructure.
  • the D2D UE Before performing D2D discovery or D2D communication, the D2D UE needs to obtain the corresponding radio resource first.
  • There are two resource allocation modes that is, D2D discovery or D2D communication resource, that is, the base station allocates a dedicated resource to the UE (first The resource allocation method, also known as mode 1), or D2D discovery/communication based on contention of resource acquisition (second resource allocation mode, also called mode 2).
  • the first resource allocation mode is configured by the base station to allocate appropriate D2D resources to the D2D UE according to the request of the D2D UE, and the manner can only be used for the D2D UE located in the coverage of the cellular network.
  • the second resource allocation mode is usually pre-allocated by the base station or the system to a D2D resource pool, and the D2D UE participating in the D2D discovery/communication listens to the resource pool or obtains the D2D transmission resource through contention.
  • This method is mainly used for the cellular network.
  • the out-of-coverage D2D UE can also be used for D2D UEs within the cellular network coverage. For D2D UEs within a cellular network coverage, they may use a D2D contention resource pool configured for the served cell. For D2D UEs outside the cellular network coverage, a pre-configured D2D contention pool can be used.
  • the UE stops using the UE once it detects that it is within the coverage of a cell of the cellular network, and the cell supports D2D communication.
  • Pre-configured D2D resources at the same frequency point as the cell.
  • the UE can only restart after acquiring the mode2 resource (if any) from the System Information Broadcast (SIB) of the cell, or obtaining the mode1/mode2 D2D resource through the dedicated signaling after establishing the RRC connection. D2D communication data transmission. Therefore, the UE in the above scenario will experience a period of D2D communication interruption, which will affect D2D service continuity, especially for some delay sensitive services, such as VOIP services.
  • SIB System Information Broadcast
  • the base station needs to configure PDCP layer parameters, for example, PDCP header compression related parameters, for each bearer and the receiver UE through RRC signaling.
  • PDCP layer parameters for example, PDCP header compression related parameters
  • the communication between the UEs does not need to pass through the base station, especially for the broadcast communication scenario.
  • the base station does not even know which UEs are the receiver UEs, and cannot configure the corresponding radio bearer parameters for the D2D UE through the RRC signaling. In this case, the receiver D2D UE cannot obtain these D2D radio bearer PDCP layer parameters, and cannot correctly parse the D2D communication data.
  • the embodiment of the invention provides a device-to-device D2D data transmission method and device, and a D2D UE.
  • the problem that the D2D service interruption exists in the related technology and the D2D UE cannot correctly parse the D2D communication data can be solved.
  • a device-to-device D2D data transmission method including: determining a PDCP for indicating whether a D2D communication sender user equipment UE performs PDCP header compression processing on a packet data convergence protocol PDCP protocol data unit PDU Head compression indication information; and/or PDCP encryption indication information indicating whether the D2D communication sender user equipment UE performs PDCP encryption processing on the packet data convergence protocol PDCP protocol data unit PDU; transmitting the PDCP to the D2D communication receiver UE Head compression indication information and/or the PDCP encryption indication information.
  • the PDCP header compression indication information and/or the PDCP encryption indication information is determined by at least one of: determining the PDCP header compression indication information according to a D2D communication service feature, and/or the And the PDCP encryption indication information is determined according to the configuration information sent by the base station to which the D2D communication sender UE belongs, and the PDCP header compression indication information and/or the PDCP encryption indication information is determined according to the D2D communication sender UE to be sent by the ProSe server Determining, by the configuration information, the PDCP header compression indication information and/or the PDCP encryption indication information; determining, according to configuration information sent by the application server AS to which the D2D communication sender UE belongs, the PDCP header compression indication information and/or the PDCP encryption indication information.
  • the PDCP header compression indication information is sent to the D2D communication receiver UE by using the PDCP header compression indication information and/or the PDCP encryption indication information in a PDCP PDU data packet manner. Or the PDCP encryption indication information.
  • the method is sent to the D2D communication receiver UE by carrying the PDCP header compression indication information and/or the PDCP encryption indication information in a PDCP packet header part of the PDCP PDU data packet.
  • the PDCP header compresses the indication information and/or the PDCP encryption indication information.
  • the method includes: carrying the PDCP header compression indication information and/or the PDCP encryption indication information in a PDU type field of a PDCP header portion in the PDCP PDU data packet, where Transmitting the PDCP header compression indication information and/or the PDCP encryption indication information to a D2D communication receiver UE; and carrying the PDCP header compression indication information and/or the PDCP encryption indication information in the PDCP PDU data packet
  • the security information in the PDCP header section indicates the way within the domain to D2D Transmitting, by the communication receiver UE, the PDCP header compression indication information and/or the PDCP encryption indication information; by carrying the PDCP header compression indication information and/or the PDCP encryption indication information in the PDCP PDU data packet
  • the header compression indication in the PDCP header portion indicates the manner within the domain and/or the encryption indication domain, and the PDCP header compression indication information and/or the PDCP encryption indication information is transmitted to the D2D communication receiver UE.
  • the PDU type field of the PDCP header portion is used to indicate the type of the PDCP PDU data packet, and the value of the type includes at least one of the following: an Internet Protocol IP packet, and an address resolution protocol ARP packet. Use IP packets compressed by the header and IP packets without header compression.
  • performing PDCP layer processing according to the received PDCP header compression indication information and/or the PDCP encryption indication information includes: the PDCP header compression indication information indicating the D2D communication sender UE
  • the PDCP header is compressed by the PDCP PDU and/or the PDCP encryption indication information indicates that the D2D communication sender UE performs PDCP encryption processing on the PDCP PDU, and performs header decompression on the received PDCP PDU.
  • the PDCP header compression indication information indicates that the D2D communication sender UE has not performed PDCP header compression on the PDCP PDU and/or the PDCP encryption indication information indicates the D2D communication sender In the case where the UE does not perform PDCP encryption processing on the PDCP PDU, the UE performs a header decompression process and/or a decryption process on the received PDCP PDU.
  • the PDCP header compression indication information and/or the PDCP encryption is received by carrying the PDCP header compression indication information and/or the PDCP encryption indication information in a PDCP PDU data packet manner. Instructions.
  • the PDCP header compression indication information is received by carrying the PDCP header compression indication information and/or the PDCP encryption indication information in a PDCP header portion of the PDCP PDU data packet. And/or the PDCP encryption indication information.
  • the PDCP header part in the PDCP PDU data packet further includes at least one of the following information: maxCID, profiles.
  • the method includes: carrying the PDCP header compression indication information and/or the PDCP encryption indication information in a PDU type field of a PDCP header portion in the PDCP PDU data packet, where Receiving the PDCP header compression indication information and/or the PDCP encryption indication information; carrying the PDCP header compression indication information and/or the PDCP encryption indication information in a PDCP header portion of the PDCP PDU data packet
  • the security information indicating the manner in the domain, sending the PDCP header compression indication information and/or the PDCP encryption indication information to the D2D communication receiver UE; by compressing the PDCP header indication information and/or the PDCP encryption indication information
  • the PDU type field of the PDCP header portion is used to indicate the type of the PDCP PDU data packet, and the value of the type includes at least one of the following: an Internet Protocol IP packet, and an address resolution protocol ARP packet. Use IP packets compressed by the header and IP packets without header compression.
  • a device-to-device D2D data transmission method including: determining a device-to-device D2D resource pool for an abnormal situation in a cell system message; performing D2D according to the determined D2D resource pool data transmission.
  • the method before the D2D data transmission is performed according to the determined D2D resource pool, the method further includes: detecting that the D2D user equipment UE that performs D2D data transmission is within the coverage of the cell.
  • the D2D UE is in the coverage of the cell, the cell in which the D2D UE is located satisfies the cell selection S criterion, or the D2D UE determines that the cell in which the D2D UE is located is suitable. Community.
  • the method further includes: determining whether the radio link control RRC reconfiguration message including the D2D resource configuration information is received; In this case, the D2D resource pool for the abnormal situation in the system message is stopped.
  • the sending module is further configured to send the PD2 header compression indication information and/or the PDCP encryption indication information to the D2D communication receiver UE by means of carrying the PDCP header compression indication information.
  • the PDCP header compression indication information and/or the PDCP encryption indication information is described.
  • the sending module is further configured to: by carrying the PDCP header compression indication information and/or the PDCP encryption indication information in a PDCP packet header part of the PDCP PDU data packet,
  • the D2D communication receiver UE transmits the PDCP header compression indication information and/or the PDCP encryption indication information.
  • the PDCP header part in the PDCP PDU data packet further includes at least one of the following information: maxCID, profiles.
  • the PDU type field of the PDCP header portion is used to indicate the type of the PDCP PDU data packet, and the value of the type includes at least one of the following: an Internet Protocol IP packet, and an address resolution protocol ARP packet. Use IP packets compressed by the header and IP packets without header compression.
  • a device-to-device D2D data transmission apparatus comprising: a receiving module, configured to receive, to indicate, whether a D2D communication sender user equipment UE performs a packet data convergence protocol PDCP protocol data unit PDU PDCP header compression indication information for PDCP header compression processing; and/or PDCP encryption indication information for indicating whether the D2D communication sender user equipment UE performs PDCP encryption processing on the packet data convergence protocol PDCP protocol data unit PDU; processing module, setting The PDCP layer processing is performed according to the received PDCP header compression indication information and/or the PDCP encryption indication information.
  • the processing module includes: a processing unit, configured to: in the PDCP header compression indication information, instruct the D2D communication sender UE to perform PDCP header compression on the PDCP PDU and/or the PDCP
  • the encryption indication information indicates that the D2D communication sender UE performs PDCP encryption processing on the PDCP PDU, performs header decompression processing and/or decryption processing on the received PDCP PDU, and gives up the unit, and is set to
  • the PDCP header compression indication information indicates that the D2D communication sender UE has not performed PDCP header compression on the PDCP PDU and/or the PDCP encryption indication information indicates that the D2D communication sender UE does not perform PDCP on the PDCP PDU.
  • the header decompression process and/or the decryption process are discarded for the received PDCP PDU.
  • the receiving module is further configured to receive the PDCP header compression indication by carrying the PDCP header compression indication information and/or the PDCP encryption indication information in a PDCP PDU data packet.
  • Information and/or the PDCP encryption indication information are further configured to receive the PDCP header compression indication by carrying the PDCP header compression indication information and/or the PDCP encryption indication information in a PDCP PDU data packet.
  • the receiving module is further configured to receive, by carrying, the PDCP header compression indication information and/or the PDCP encryption indication information in a PDCP header portion of the PDCP PDU data packet. And the PDCP header compression indication information and/or the PDCP encryption indication information.
  • the PDCP header part in the PDCP PDU data packet further includes at least one of the following information: maxCID, profiles.
  • the receiving module is further configured to: carry the PDCP header compression indication information and/or the PDCP encryption indication information in a PDCP packet header part in the PDCP PDU data packet.
  • the manner of the security information indication domain in the PDCP header part of the data packet indicates that the PDCP header compression indication information and/or the PDCP encryption indication information is sent to the D2D communication receiver UE; and the PDCP header compression indication information and/or Or the PDCP encryption indication information is carried in the PDU type field of the PDCP header part in the PDCP PDU data packet and/or in the encryption indication domain, and the PDCP header compression indication information and/or the PDCP encryption indication is received. information.
  • the PDU type field of the PDCP header portion is used to indicate the type of the PDCP PDU data packet, and the value of the type includes at least one of the following: an Internet Protocol IP packet, and an address resolution protocol ARP packet. Use IP packets compressed by the header and IP packets without header compression.
  • a device-to-device D2D data transmission apparatus including: a second determining module, configured to determine a device-to-device D2D resource pool for an abnormal situation in a cell system message; a transmission module, And being configured to perform D2D data transmission according to the determined D2D resource pool.
  • the apparatus further includes: a detecting module, configured to detect that the D2D user equipment that performs D2D data transmission is within the coverage of the cell.
  • the device further includes: a determining module, configured to determine whether the radio link control RRC reconfiguration message including the D2D resource configuration information is received; and the stopping module is configured to determine that the determining result in the determining module is In the case of the case, the D2D resource pool for the abnormal situation in the system message is stopped.
  • a device to device D2D user equipment UE comprising the apparatus of any of the above.
  • the PDCP header compression indication information for determining whether the D2D communication sender user equipment UE performs PDCP header compression processing on the packet data convergence protocol PDCP protocol data unit PDU is adopted, and/or is used to indicate D2D communication.
  • the sender user equipment UE performs PDCP encryption indication information for PDCP encryption processing on the packet data convergence protocol PDCP protocol data unit PDU; and sends the PDCP header compression indication information and/or the PDCP encryption indication information to the D2D communication receiver UE,
  • the problem that the receiving D2D UE cannot correctly parse the D2D communication data in the related art is solved, and the D2D communication receiving party UE obtains the PDCP header compression indication information and/or the PDCP encryption indication information, and can correctly parse the D2D communication data.
  • FIG. 1 is a schematic diagram of an application mode of a D2D technology in the related art
  • FIG. 2 is a flowchart of a device-to-device D2D data transmission method 1 according to an embodiment of the present invention
  • FIG. 3 is a flowchart of a device-to-device D2D data transmission method 2 according to an embodiment of the present invention
  • FIG. 4 is a flowchart of a device-to-device D2D data transmission method 3 according to an embodiment of the present invention
  • FIG. 5 is a structural block diagram of a device-to-device D2D data transmission apparatus 1 according to an embodiment of the present invention
  • FIG. 6 is a structural block diagram of a device-to-device D2D data transmission device 2 according to an embodiment of the present invention
  • FIG. 7 is a block diagram showing a preferred structure of a processing module 64 in a device-to-device D2D data transmission device 2 according to an embodiment of the present invention
  • FIG. 8 is a structural block diagram of a device-to-device D2D data transmission apparatus 3 according to an embodiment of the present invention.
  • FIG. 9 is a block diagram showing a preferred structure of a device-to-device D2D data transmission device 3 according to an embodiment of the present invention.
  • FIG. 10 is a block diagram 2 of a preferred structure of a device-to-device D2D data transmission device 3 according to an embodiment of the present invention
  • FIG. 11 is a structural block diagram of a D2D UE according to an embodiment of the present invention.
  • Figure 12 is a flow chart showing a preferred embodiment of the present invention.
  • FIG. 13 is a schematic diagram of a format of a D2D communication PDCP PDU data packet according to an embodiment of the present invention.
  • Figure 14 is a flow chart according to a preferred embodiment 2 of the present invention.
  • Figure 15 is a schematic illustration of a scene in accordance with a preferred embodiment of the present invention.
  • Figure 16 is a schematic illustration of a method in accordance with a preferred embodiment 3 of the present invention.
  • FIG. 2 is a flowchart of a device-to-device D2D data transmission method 1 according to an embodiment of the present invention. As shown in FIG. 2, the process includes the following steps:
  • Step S202 determining PDCP header compression indication information for indicating whether the D2D communication sender user equipment UE performs PDCP header compression processing on the packet data convergence protocol PDCP protocol data unit PDU; and/or The PDCP encryption indication information indicating whether the D2D communication sender user equipment UE performs PDCP encryption processing on the packet data convergence protocol PDCP protocol data unit PDU; and sends the PDCP header compression indication information and/or the PDCP encryption indication information to the D2D communication receiver UE;
  • the method further includes: detecting that the D2D user equipment UE that performs D2D data transmission is within the coverage of the cell. It should be noted that, the D2D UE is in the coverage of the cell, the cell where the D2D UE is located satisfies the cell selection S criterion, or the D2D UE determines that the cell where the D2D UE is located is a suitable cell.
  • the D2D communication sender UE determines that PDCP header compression is required, it also needs to determine parameter information of the PDCP header compression (for example, maxCID (upper layer configuration), profiles, etc.).
  • the parameter information of the PDCP header compression may also be determined by the D2D communication sender UE, or configured by the base station, or configured by the ProSe server or the application server.
  • the parameter information of the PDCP header compression can also be determined by a protocol to a specific value. It should be noted that PDCP header compression is only used for IP packets.
  • Step 2 The D2D communication sender UE sends the header compression indication information to the D2D communication receiver UE.
  • the D2D communication sender UE transmits the PDCP header compression indication information to the D2D communication receiver UE through the PDCP PDU data packet.
  • the D2D communication sender UE may include the PDCP header compression indication information in the PDCP header portion in the PDCP PDU.
  • the PDCP header compression indication information may be indicated by a newly added PDCP header compression indication field, where the PDCP header compression indication field may be 1 bit, for example, a value of 0 represents no PDCP header compression, and a value of 1 represents compression using PDCP headers.
  • the D2D communication sender UE may indicate the header compression indication information through the PDU type field of the PDCP header portion of the PDCP PDU.
  • 13 is a schematic diagram of a format of a D2D communication PDCP PDU packet according to an embodiment of the present invention, as shown in FIG. 13, wherein a Layer-3 PDU Type field, that is, a PDU type field, is used to indicate a type of a D2D communication PDCP PDU packet, and its value is Can be one of the following: IP packet, ARP packet, IP packet using header compression, IP packet without header compression. If the value is an IP packet that uses header compression, it indicates that the PDCP PDU uses PDCP header compression.
  • Step 3 The receiving D2D UE performs PDCP layer processing according to the header compression indication information. Specifically, if the header compression indication information indicates that the D2D communication sender UE performs PDCP header compression on the PDCP PDU, the D2D communication receiver UE needs to perform header decompression processing on the received PDCP PDU; the header compression indication information indication In the case where the D2D communication sender UE does not perform PDCP header compression on the PDCP PDU, the D2D communication receiver UE does not perform header decompression processing on the received PDCP PDU.
  • the preferred embodiment describes a method in which a sender D2D UE transmits a PDCP layer encryption indication to a receiver D2D UE.
  • 14 is a flow chart according to a preferred embodiment 2 of the present invention. As shown in FIG. 14, the flow includes the following steps:
  • a Layer-3 PDU Type field that is, a PDU type field, is used to indicate a type of a D2D communication PDCP PDU packet.
  • Table 2 shows an example of the value of the Layer-3 PDU Type field.
  • the Layer-3 PDU Type field consists of three bits. Two of the bits indicate whether the PDCP PDU uses header compression or whether to use encryption. . For example, a value of 000 indicates that the PDCP PDU does not use header compression, and no encryption is used. A value of 001 indicates that the PDCP PDU does not use header compression but uses encryption. A value of 010 indicates that the PDCP PDU uses header compression but does not use encryption. A value of 011 indicates that the PDCP PDU uses header compression and uses encryption.
  • Step 3 The receiving D2D UE performs PDCP layer processing according to the encryption indication information. Specifically, when the encryption indication information indicates that the D2D communication sender UE performs PDCP layer encryption on the PDCP PDU, the D2D communication receiver UE needs to perform header decryption processing on the received PDCP PDU; the encryption indication information indicates D2D communication transmission. In the case where the party UE does not perform PDCP layer encryption on the PDCP PDU, the D2D communication receiver UE does not perform PDCP layer decryption processing on the received PDCP PDU.
  • FIG. 15 is a schematic diagram of a scenario according to a preferred embodiment of the present invention.
  • the D2D UE1 outside the coverage of the cellular network is performing D2D communication, which uses the pre-configured mode 2 resource pool from which resources are acquired in a competitive manner to perform D2D communication data transmission.
  • the D2D UE1 moves from the coverage area outside the cellular network to the coverage area of the lower cell of the base station 1.
  • 16 is a schematic diagram of a method according to a preferred embodiment of the present invention. As shown in FIG. 16, the D2D UE1 undergoes the following stages during the mobile process, and the D2D communication resources used in each stage are as follows:
  • Phase 1 The D2D UE is in a non-cellular network coverage area, where the UE uses pre-configured mode 2 D2D communication resources. At this time, the UE moves to the coverage area of the cellular network of the base station 1.
  • Phase 2 The UE detects that the cell 1 in the base station 1 satisfies the criteria for selecting the S-cell, and assumes that the frequency of the cell 1 is the same as the frequency of the D2D resource pool pre-configured by the UE. In this case, the UE needs to stop using the pre-configured D2D communication resource pool. To avoid interference with cellular communications within cell 1. The UE will then attempt to read the D2D resource pool information in the SIB in the cell (the D2D resource pool is used for normal conditions and/or abnormal conditions).
  • Phase 3 After the UE reads the D2D resource pool information in the SIB, the UE resumes the transmission of the D2D communication data.
  • the time during which the UE reads the D2D resource in the SIB until the UE completes the RRC connection setup procedure and receives the RRC reconfiguration message including the D2D resource configuration (mode1 and/or mode 2) is referred to as phase 3, and the UE uses the SIB in this phase.
  • the mode 2 resource performs the transmission of D2D communication.
  • Phase 4 After acquiring the D2D resource configuration information (which may be mode 1 configuration information or mode 2 resource pool information) sent by the base station through the dedicated signaling, the UE performs D2D communication according to the resource configuration information.
  • D2D resource configuration information which may be mode 1 configuration information or mode 2 resource pool information
  • the D2D UE can use the D2D communication mode 2 resource of the cell for normal or abnormal conditions only when it is within the coverage of the cell (ie, the cell satisfies the cell selection S criterion or meets the suitable cell criterion). Once the UE detects that the cell does not satisfy the S criterion or the suitable cell criterion, the D2D communication mode 2 resource for the normal or abnormal condition of the cell is stopped.
  • the UE obtains the D2D resource pool in the SIB (for normal conditions or abnormal conditions, the resource pool may be the same as the resource pool in the PD2DSCH), when the UE moves to the coverage area, that is, when the cell meets the S criterion or meets the suitable cell criterion. Or different), use the D2D resource pool in the SIB for D2D communication.
  • the semi-coverage area means that the UE does not detect that the cell satisfies the S criterion or the suitable cell criterion, but can receive the The D2D SS (the D2D SS sequence belongs to the set D2DSSue_net or the set D2DSSue_oon) and the PD2DSCH transmitted by the UE within the coverage or the coverage.
  • the UE when the UE is in the coverage state, if the UE satisfies the S criterion or satisfies the suitable cell criterion, the UE obtains the D2D resource pool in the SIB (for normal conditions or abnormal conditions), and then uses the D2D in the SIB.
  • the resource pool performs D2D communication.
  • the UE detects that it is in the half-coverage state, that is, the current location of the UE does not satisfy the intra-coverage criterion, but the UE receives the D2D SS and the PD2DSCH transmitted from the in-cover or out-of-coverage UE, the UE uses the slave PD2DSCH to connect.
  • the received D2D resource pool (which may be the same or different from the SIB for the normal or abnormal situation resource pool) performs D2D communication.
  • the UE moves to the out-of-coverage area, the UE performs pre-configured D2D resources for D2D communication.
  • modules or steps of the embodiments of the present invention can be implemented by a general computing device, which can be concentrated on a single computing device or distributed in multiple computing devices. Alternatively, they may be implemented by program code executable by the computing device such that they may be stored in the storage device by the computing device and, in some cases, may be different from The steps shown or described are performed sequentially, or they are separately fabricated into individual integrated circuit modules, or a plurality of modules or steps thereof are fabricated into a single integrated circuit module. Thus, the invention is not limited to any specific combination of hardware and software.
  • the above-mentioned embodiments and the preferred embodiments solve the problem that the receiving D2D UE cannot correctly parse the D2D communication data in the related art, and further, the D2D communication receiving UE acquires the PDCP header compression indication information and/or the The PDCP encryption indication information can correctly parse the effect of the D2D communication data.

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Abstract

La présente invention concerne un procédé de transmission de données de dispositif à dispositif (D2D), un appareil, et un UE D2D. Le procédé consiste à : déterminer des informations d'indication de compression d'en-tête de protocole de convergence de données par paquets (PDCP) utilisées pour indiquer si un UE envoyant une communication D2D implémente une opération de compression d'en-tête PDCP d'une unité de données de protocole (PDU) PDCP, et/ou des informations d'indication de chiffrement PDCP utilisées pour indiquer si l'UE envoyant une communication D2D implémente une opération de chiffrement PDCP d'une PDU PDCP (S202); et envoyer les informations d'indication de compression d'en-tête PDCP et/ou les informations de chiffrement PDCP à un UE recevant une communication D2D (S204). La présente invention résout le problème lié, dans l'état de la technique, au fait qu'un UE recevant une communication D2D n'est pas apte à analyser correctement des données de communication D2D. L'invention permet quant à elle à un UE recevant une communication D2D de pouvoir analyser correctement des données de communication D2D via l'acquisition d'informations d'indication de compression d'en-tête PDCP et/ou d'informations de chiffrement PDCP.
PCT/CN2015/080513 2014-11-06 2015-06-01 Procédé de transmission de données de dispositif à dispositif (d2d), appareil, et ue d2d WO2016070615A1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
CN201410623703.X 2014-11-06
CN201410623703 2014-11-06
CN201410693713.0A CN105704641B (zh) 2014-11-06 2014-11-26 设备到设备d2d数据传输方法、装置及d2d ue
CN201410693713.0 2014-11-26

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GB2552507A (en) * 2016-07-26 2018-01-31 Samsung Electronics Co Ltd Improvements in and relating to LTE WLAN aggregation
EP3996341A4 (fr) * 2019-07-25 2022-07-13 Guangdong Oppo Mobile Telecommunications Corp., Ltd. Procédé de transmission de données, dispositif d'extrémité d'envoi et dispositif d'extrémité de réception

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CN103517371A (zh) * 2012-06-18 2014-01-15 中国移动通信集团公司 一种设备到设备的通信方法、装置及系统
CN103582127A (zh) * 2012-07-18 2014-02-12 电信科学技术研究院 一种d2d资源获取方法、设备及系统

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CN103582127A (zh) * 2012-07-18 2014-02-12 电信科学技术研究院 一种d2d资源获取方法、设备及系统
WO2013189367A2 (fr) * 2013-05-07 2013-12-27 中兴通讯股份有限公司 Procédé pour abonné dispositif à dispositif pour le multiplexage dynamique de ressources d'abonné cellulaire, et station de base

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2552507A (en) * 2016-07-26 2018-01-31 Samsung Electronics Co Ltd Improvements in and relating to LTE WLAN aggregation
GB2552507B (en) * 2016-07-26 2019-05-29 Samsung Electronics Co Ltd Improvements in and relating to LTE WLAN aggregation
EP3996341A4 (fr) * 2019-07-25 2022-07-13 Guangdong Oppo Mobile Telecommunications Corp., Ltd. Procédé de transmission de données, dispositif d'extrémité d'envoi et dispositif d'extrémité de réception

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