WO2018176227A1 - 数据处理方法和装置 - Google Patents

数据处理方法和装置 Download PDF

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Publication number
WO2018176227A1
WO2018176227A1 PCT/CN2017/078447 CN2017078447W WO2018176227A1 WO 2018176227 A1 WO2018176227 A1 WO 2018176227A1 CN 2017078447 W CN2017078447 W CN 2017078447W WO 2018176227 A1 WO2018176227 A1 WO 2018176227A1
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WO
WIPO (PCT)
Prior art keywords
layer
value
data packet
relay
preset set
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PCT/CN2017/078447
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English (en)
French (fr)
Inventor
王静
蔺波
肖潇
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华为技术有限公司
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Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to PCT/CN2017/078447 priority Critical patent/WO2018176227A1/zh
Publication of WO2018176227A1 publication Critical patent/WO2018176227A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W80/00—Wireless network protocols or protocol adaptations to wireless operation
    • H04W80/02—Data link layer protocols

Definitions

  • the present application relates to communication technologies, and in particular, to a data processing method and apparatus.
  • LTE Long Term Evolution
  • UE User Equipment
  • D2D LTE Device-to-Device
  • the LTE D2D technology is used to enable the remote UE to communicate with the eNB through the relay UE within the coverage of the Evolved Node B (eNB).
  • the remote UE and the relay UE adopt a layer 3 relay protocol stack processing manner.
  • the remote UE and the relay UE also support the processing mode of the layer 2 relay protocol stack, and the layer 2 relay protocol stack is different from the layer 3 relay protocol stack.
  • the UE at the transmitting end may adopt the processing mode of the layer 2 relay protocol stack or the processing mode of the layer 3 relay protocol stack.
  • the transmitting end UE and the receiving end UE support the processing mode of the two types of relay protocol stacks at the same time, the receiving end UE cannot know the processing mode of the relay protocol stack used by the transmitting end UE, so that the data cannot be processed correctly.
  • the present application provides a data processing method and apparatus for solving the problem that the receiving end UE cannot know the processing mode of the relay protocol stack used by the transmitting end UE, so that the data cannot be correctly processed.
  • the present application provides a data processing method, including: receiving, by a user equipment, a UE, a data packet sent by a UE, where the data packet includes indication information, where the indication information is used to indicate that the data packet is layer 2 relay data; The receiving end UE determines, according to the indication information, that the data packet is processed by using the layer 2 relay data processing manner, so that the receiving end UE learns that the data packet uses the layer 2 relay data processing manner to correctly process the data packet.
  • the indication information is a service data unit SDU type field of a packet data convergence protocol protocol data unit PDCP PDU of the data packet; the value of the SDU type field is a preset value.
  • the preset value is 011 or 100 or 101 or 110 or 111.
  • the indication information is a logical channel identifier LCID field of a media access control protocol data unit MAC PDU of the data packet, and the value of the LCID field is a value in the preset set.
  • the preset set is a set of partial values between 00001 and 01010;
  • the preset set is a set of values between 01011-11011;
  • the preset set is a set of partial values between 01011-11011;
  • the preset set is a set of partial values between 00001-01010 and a partial value between 01011-11011.
  • the method further includes: receiving, by the receiving end, the receiving, by the base station, the first configuration information, where the first configuration information includes the preset set.
  • the receiving UE processes the data packet by using the layer 2 relay data processing manner, including:
  • the PC5 PDCP layer of the receiving UE disables the header decompression function and/or the decryption function and/or completes the data packet. Sexual protection.
  • the method before the PC5 PDCP layer of the receiving UE disables the header decompression function and/or the decryption function and/or the integrity protection function for the data packet, the method further includes:
  • the receiving end UE receives the second configuration information sent by the base station, where the second configuration information indicates that the PC5PDCP of the receiving end UE disables the header decompression function and/or the decryption function and/or the integrity protection function.
  • the receiving end UE is a remote UE, and the transmitting end UE is a relaying UE; or the receiving end UE is a relaying UE, and the transmitting end UE is a remote UE.
  • the present application provides a data processing method, including: receiving, by a user equipment, a UE, a data packet sent by a UE, where the data packet includes indication information, where the indication information is used to indicate that the data packet is in layer 2. Following the data; the receiving UE determines to establish a secondary link radio bearer SLRB for the layer 2 relay according to the indication information.
  • the indication information is a logical channel identifier LCID field of a media access control protocol data unit MAC PDU of the data packet, and the value of the LCID field is a value in the preset set, and the LCID in the preset set is used.
  • the preset set is a set of partial values between 00001 and 01010;
  • the preset set is a set of values between 01011-11011;
  • the preset set is a set of partial values between 01011-11011;
  • the preset set is a set of partial values between 00001-01010 and a partial value between 01011-11011.
  • it also includes:
  • the receiving end UE receives the configuration information sent by the base station, and the configuration information includes a preset set.
  • the receiving end UE is a remote UE, and the transmitting end UE is a relaying UE; or the receiving end UE is a relaying UE, and the transmitting end UE is a remote UE.
  • the application provides a data processing method, including:
  • the user equipment UE receives the indication information sent by the base station, where the indication information includes at least the logical channel identifier LCID;
  • the UE establishes a secondary link radio bearer SLRB for layer 2 relay according to the indication information.
  • the value of the LCID is a value in a preset set, and the LCID in the preset set is used for the layer 2 relay;
  • the preset set is a set of partial values between 00001 and 01010;
  • the preset set is a set of values between 01011-11011;
  • the preset set is a set of partial values between 01011-11011;
  • the preset set is a set of partial values between 00001-01010 and a partial value between 01011-11011.
  • the indication information further includes configuration parameters for establishing a medium access control MAC layer and/or a radio link control RLC layer and/or a PC5 adaptation layer for the SLRB for layer 2 relay.
  • the UE is a relay UE or a remote UE, wherein the remote UE can communicate with the base station by relaying the UE.
  • the receiving end UE and the sending end UE in the present application may be a smart phone, a wearable device (such as a smart watch, etc.), a communication device such as an Internet of Things device, or other communication device, which is not limited in this application.
  • the application provides a data processing apparatus, including:
  • the receiving module is configured to receive the data packet sent by the sending end UE, where the data packet includes the indication information, and the processing module is configured to determine, according to the indication information, that the data packet is processed by using the layer 2 relay data processing manner.
  • the indication information is a service data unit SDU type field of a packet data convergence protocol protocol data unit PDCP PDU of the data packet; the value of the SDU type field is a preset value.
  • the preset value is 011 or 100 or 101 or 110 or 111.
  • the indication information is a logical channel identifier LCID field of a media access control protocol data unit MAC PDU of the data packet, and the value of the LCID field is a value in the preset set.
  • the preset set is a set of partial values between 00001 and 01010;
  • the preset set is a set of values between 01011-11011;
  • the preset set is a set of partial values between 01011-11011;
  • the preset set is a set of partial values between 00001-01010 and a partial value between 01011-11011.
  • the receiving module is further configured to receive first configuration information sent by the base station, where the first configuration information includes the preset set.
  • the processing module is specifically configured to control the PC5 PDCP layer to disable the header decompression function and/or the decryption function and/or the integrity protection function for the data packet.
  • the receiving module is further configured to receive second configuration information sent by the base station, where the second configuration information indicates that the PC5 PDCP of the receiving end UE disables the header decompression function and/or the decryption function and/or the integrity protection.
  • the application provides a data processing apparatus, including:
  • the receiving module is configured to receive the data packet sent by the sending end UE, where the data packet includes the indication information, and the processing module is configured to determine, according to the indication information, the establishment of the secondary link radio bearer SLRB for the layer 2 relay.
  • the indication information is a logical channel identifier LCID field of a media access control protocol data unit MAC PDU of the data packet, and the value of the LCID field is a value in the preset set, and the LCID in the preset set is used.
  • the preset set is a set of partial values between 00001 and 01010;
  • the preset set is a set of values between 01011-11011;
  • the preset set is a set of partial values between 01011-11011;
  • the preset set is a set of partial values between 00001-01010 and a partial value between 01011-11011.
  • the receiving module is further configured to receive configuration information sent by the base station, where the configuration information includes a preset set.
  • the application provides a data processing apparatus, including:
  • the receiving module is configured to receive the indication information sent by the base station, where the indication information includes at least the logical channel identifier LCID, and the processing module is configured to establish, according to the indication information, the secondary link radio bearer SLRB for the layer 2 relay.
  • the value of the LCID is a value in the preset set, and the LCID in the preset set is used for the layer 2 relay; wherein the preset set is a partial value between 00001 and 01010. a collection; or, the preset set is a set of values between 01011 and 11011; or, the preset set is a value A set of partial values between 01011-11011; or, the preset set is a set of partial values between 00001-01010 and a partial value between 01011-11011.
  • the indication information further includes configuration parameters for establishing a medium access control MAC layer and/or a radio link control RLC layer and/or a PC5 adaptation layer for the SLRB for layer 2 relay.
  • FIG. 1 is a schematic diagram of an application scenario provided by the present application
  • FIG. 2 is a schematic structural diagram of a Layer 3 relay protocol stack of the present application
  • 2a is a schematic diagram of a D2D protocol stack architecture in which a UE communicates with a UE according to the present application;
  • 3a-3d are schematic diagrams showing the architecture of a Layer 2 relay protocol stack of the present application.
  • Embodiment 4 is a schematic flowchart of Embodiment 1 of a data sending method according to the present application.
  • FIG. 5 is a schematic diagram of a format of a PC5 PDCP PDU according to the present application.
  • FIG. 6 is a schematic diagram of values and descriptions of SDU type fields of a PC5 PDCP PDU according to the present application
  • FIGS. 7a-7b are schematic diagrams of a scenario of data processing of the present application.
  • FIGS. 8a-8b are schematic diagrams of another scenario of data processing of the present application.
  • FIG. 9 is a schematic flowchart of Embodiment 2 of a data sending method according to the present application.
  • FIGS. 10a-10b are schematic diagrams of still another scenario of data processing of the present application.
  • FIGS. 11a-11b are schematic diagrams of still another scenario of data processing of the present application.
  • 12a-12b are schematic diagrams of a scenario of data processing of the present application.
  • 13a-13b are schematic diagrams of a scenario of data processing of the present application.
  • FIG. 14 is a schematic flowchart of Embodiment 3 of a data sending method according to the present application.
  • FIG. 16 is a schematic structural diagram of Embodiment 1 of a data processing apparatus according to the present application.
  • FIG. 17 is a schematic structural diagram of Embodiment 2 of a data processing apparatus provided by the present application.
  • FIG. 18 is a schematic structural diagram of Embodiment 3 of a data processing apparatus provided by the present application.
  • FIG. 19 is a schematic structural diagram of Embodiment 4 of a data processing apparatus according to the present application.
  • Embodiment 5 of a data processing apparatus provided by the present application.
  • FIG. 21 is a schematic structural diagram of Embodiment 6 of a data processing apparatus provided by the present application.
  • FIG. 1 is a schematic diagram of an application scenario provided by the present application.
  • the technical solution of the present application can be applied to a communication system such as 3G, LTE, 5G, and 5G, and a remote UE can use a D2D technology to relay a UE.
  • Communicating with the base station wherein the relay UE is within the coverage of the base station, and the remote UE may be within the coverage of the base station or outside the coverage of the base station.
  • the remote UE and the relay UE described in the present application simultaneously support D2D technologies of two protocol stacks, one of which is a layer 3 relay protocol stack, the other is a layer 2 relay protocol stack, and the layer 3 relay is The relay function is implemented in the IP layer.
  • the layer 2 relay refers to the relay function in the Packet Data Convergence Protocol (PDCP) layer, the Radio Link Control (RLC) layer, and the medium access control. (Medium Access Control, MAC) layer, between the PDCP layer and the RLC layer or between the RLC layer and the MAC layer.
  • PDCP Packet Data Convergence Protocol
  • RLC Radio Link Control
  • MAC Medium Access Control
  • FIG. 3a to FIG. 3d are diagrams. Schematic diagram of the architecture of the layer 2 relay protocol stack of the present application.
  • the remote UE may also perform communication between the UE and the UE with the relay UE.
  • the protocol stack is as shown in FIG. 2a.
  • the D2D technology described in this application may be LTE D2D (also known as Sidelink) or 5G D2D (also known as 5G Sidelink). )technology.
  • PC5 A radio interface for D2D communication between the UE and the UE.
  • Uu The wireless interface for communication between the UE and the eNB.
  • PC5 PDCP, PC5 RLC, PC5 MAC, and PC5 PHY referred to in this application refer to the PDCP, RLC, MAC, and PHY layers on the PC5 interface.
  • the Uu PDCP, Uu RLC, Uu MAC, and Uu PHY referred to in this application refer to the PDCP, RLC, MAC, and PHY layers on the Uu interface.
  • the logical "Uu interface” has only the PDCP layer.
  • the sending process of the uplink packet is as follows:
  • the remote UE After the remote UE generates an Internet Protocol (IP) packet, it is sent to the PC5 PDCP layer of the remote UE by the IP layer of the remote UE, and is processed by the PC5 PDCP layer and sent to the PC5 RLC.
  • the PC5 RLC layer processes the packet and sends it to the PC.
  • the PC5 MAC layer is processed by the PC5 MAC layer and sent to the PC5 PHY layer.
  • the PC5 PHY layer of the remote UE is processed and sent to the PC5 PHY layer of the relay UE through the physical channel.
  • the PC5 PHY layer processes and delivers it to the PC5 MAC layer, PC5.
  • the MAC layer After processing, the MAC layer is forwarded to the PC5 RLC layer.
  • the PC5 RLC layer processes it and forwards it to the PC5 PDCP layer.
  • the PC5 PDCP layer processes it and sends it to the IP relay layer.
  • the IP relay layer performs relay-related processing, for example: The U.S. After being processed by the Uu MAC layer, it is sent to the Uu PHY layer, and the Uu PHY layer processes and sends it to the Uu PHY layer of the eNB, and the subsequent processing is not described again.
  • the transmission process of the downlink data packet is similar to the transmission process of the uplink data packet, and after receiving the data packet of the Uu PHY layer of the eNB by the Uu PHY layer of the relay UE, it is sequentially sent to the remote end in the reverse order of the transmission of the uplink data packet.
  • the IP layer of the UE wherein the IP relay layer of the relay UE performs processing related to the relay, for example, converting the IP address of the relay UE into an IP address of the remote UE, and the like.
  • the sending process of the uplink packet is as follows:
  • the IP layer of the remote UE is sent to the Uu PDCP layer of the remote UE, and the Uu PDCP process is sent to the adaptation layer of the remote UE, and the adaptation layer performs processing, for example, adding the Uu RBID.
  • the first indication information is used as a packet header, the first indication information is used to indicate that the data packet is sent to the eNB, and the adaptation layer processes the packet to the PC5 PDCP, and the PC5 PDCP layer processes the packet to the PC5 RLC, and the PC5 RLC layer processes and sends the packet to the PC5 RLC layer.
  • the PC5 MAC layer is processed by the PC5 MAC layer and sent to the PC5 PHY layer.
  • the PC5 PHY layer of the remote UE is processed and sent to the PC5 PHY layer of the relay UE through the physical channel.
  • the PC5 PHY layer processes and delivers it to the PC5 MAC layer, PC5. MAC layer
  • the data is forwarded to the PC5 RLC layer, and the PC5 RLC layer is processed and then forwarded to the PC5 PDCP layer.
  • the PC5 PDCP layer processes and sends it to the first adaptation layer.
  • the first adaptation layer reads the adaptation layer header information and determines the data. If the packet is sent to the eNB, after the corresponding processing, for example, the adaptation layer header is removed, the data packet is sent to the second adaptation layer, and the second adaptation layer performs processing, for example, adding a second indication information to the data packet.
  • the second indication information is used to indicate that the data packet is from the remote UE, and may be the UE ID of the remote UE; for example, according to the Radio Bear Identification (RBID) (Uu) of the remote UE and the relay UE.
  • RBID Radio Bear Identification
  • the mapping relationship of the RBID (Uu), determining which RB resource of the relay UE is used to transmit the data packet, or according to the secondary link radio bearer (SLRB) of the remote UE and the RB (Uu) of the relay UE The mapping relationship determines which RB resource of the relay UE is used to transmit the data packet.
  • the Uu RLC entity corresponding to the RB (Uu) of the relay UE transmitting the data packet is processed by the Uu RLC entity and sent to the Uu MAC layer, and processed by the Uu MAC layer and sent to the Uu PHY layer, Uu.
  • the PHY layer After being processed by the PHY layer, it is sent to the Uu PHY layer of the eNB.
  • the Uu PHY layer of the eNB processes and delivers it to the Uu MAC layer.
  • the Uu MAC layer processes the data and delivers it to the Uu RLC layer.
  • the adaptation layer After processing by the Uu RLC layer, it is delivered to the adaptation layer for processing. For example, the adaptation layer header is removed, and the remote UE is determined according to the second indication information, and the adaptation layer processes and sends the packet to the Uu PDCP layer, and the subsequent processing is not described again.
  • the transmission process of the downlink data packet is similar to the transmission process of the uplink data packet.
  • the Uu PHY layer of the relay UE After receiving the data packet sent by the Uu PHY layer of the eNB, the Uu PHY layer of the relay UE sends the data packet to the remote end in the reverse order of the uplink data packet.
  • the IP layer of the UE in the downlink process, the adaptation layer of the relay UE identifies, according to the identifier of the remote UE, which remote UE the data packet is sent to, according to the SLRB of the remote UE and the RB of the relay UE ( The mapping relationship of Uu) determines which SLRB is between the relay UE and the remote UE.
  • the adaptation layer After the data is processed by the adaptation layer, it is sent to the PC5PDCP entity corresponding to the SLRB. The subsequent processing is not described here.
  • Figure 3b differs from the protocol stack architecture of Figure 3a in that the remote UE in Figure 3b has no adaptation layer and the relay UE does not have a first adaptation layer.
  • the process of transmitting the uplink data packet and the sending process of the downlink data packet in FIG. 3b are similar to those in FIG. 3a. See the related description in FIG. 3a, and details are not described herein again.
  • Figure 3c differs from the protocol stack architecture of Figure 3a in that the remote UE and the relay UE in Figure 3c do not have a PC5 PDCP layer.
  • the adaptation layer of the remote UE processes the data packet and sends it to the PC5 RLC of the remote UE, and the PC5 RLC of the relay UE transmits the data. After the packet is processed, it is delivered to the first adaptation layer.
  • the other steps are the same and will not be described here.
  • the first adaptation layer of the relay UE processes the data packet and sends it to the PC5 RLC
  • the PC5 RLC of the remote UE processes the data packet.
  • the subsequent steps are forwarded to the adaptation layer of the remote UE.
  • the other steps are the same and will not be described here.
  • Figure 3c reduces the complexity of data processing and improves data processing efficiency by reducing the processing of the PC5 PDCP layer.
  • FIG. 3d is different from FIG. 3c in that the remote UE has no adaptation layer in FIG. 3d, and the relay UE does not have the first adaptation layer.
  • the relay UE When the remote UE transmits data by using the layer 2 relay protocol stack, the relay UE correspondingly receives the data packet by using the processing mode of the layer 2 relay protocol stack.
  • the relay UE When the remote UE transmits data by using the layer 3 relay protocol stack, the relay UE correspondingly receives the data packet by using the processing mode of the layer 3 relay protocol stack.
  • the relay UE uses the layer 2 relay protocol stack to transmit data, the remote UE correspondingly receives the data packet by using the processing method of the layer 2 relay protocol stack.
  • the remote UE uses the layer 3 relay protocol stack to transmit data, the remote UE correspondingly receives the data packet by using the processing mode of the layer 3 relay protocol stack.
  • the relay UE When the remote UE transmits data by using the PC5 protocol stack, the relay UE correspondingly needs to receive the data packet by using the processing mode of the PC5 protocol stack, and vice versa.
  • the receiving end UE in order to enable the receiving end UE to adopt the same protocol stack processing method as the transmitting end UE, the following embodiments are provided, where the receiving end UE is a remote UE, the receiving end UE is a relay UE, and the transmitting end UE is When the UE is relayed, the receiving UE is a remote UE.
  • FIG. 4 is a schematic flowchart of Embodiment 1 of a data sending method according to the present application.
  • the Layer 2 Relay Protocol Stack described in the embodiment shown in Figure 4 is for the scenario of the protocol stack shown in Figure 3a or Figure 3b.
  • the indication information is set in the PC5 PDCP layer to indicate that the data packet is layer 2 relay data, so that the layer 2 relay data processing manner is adopted, that is, the processing manner of the protocol stack as shown in FIG. 3a or FIG. 3b is adopted.
  • the service data unit (SDU) type field of the PDCP protocol data unit (PDU) PDU is set to a preset value, and when the SDU type field is the preset value, the sending end is indicated.
  • SDU service data unit
  • PDU PDCP protocol data unit
  • the data packet sent by the UE is layer 2 relay data.
  • the format of the PC5 PDCP PDU is shown in Figure 5.
  • the value of the SDU type field and its corresponding description are shown in Figure 6.
  • a possible implementation provided by the present application utilizes one of the reserved values in the SDU type field as a preset value to indicate that the data packet sent by the sending UE is layer 2 relay data.
  • the transmitting end UE sends a data packet to the receiving end UE.
  • the data packet includes indication information, where the indication information is used to indicate that the data packet is layer 2 relay data, and the layer 2 relay data refers to data processed by the layer 2 relay protocol stack.
  • one implementation manner of the indication information is:
  • the transmitting end UE sets the SDU type field of the PDCP PDU of the data packet to a preset value. For example, when the value of the SDU type field is 011, it is used to indicate that the sending UE adopts the processing mode of the layer 2 relay protocol stack.
  • the preset value may also be 111 or 100 or 101 or 110 or other values, as long as it is agreed to use the data packet as the layer 2 relay data, and the application does not limit this.
  • the protocol stack of the layer 2 relay supported by the receiving end UE and the transmitting end UE is as shown in FIG. 3a, and the transmitting end UE adopts the processing mode of the layer 2 relay protocol stack as shown in FIG. 3a, and then sets the SDU of the PDCP PDU.
  • the value corresponding to the type field is the default value.
  • the protocol stack of the layer 2 relay supported by the receiving end UE and the transmitting end UE is as shown in FIG. 3b, and the transmitting end UE adopts the processing mode of the layer 2 relay protocol stack as shown in FIG. 3b, and then sets the SDU of the PDCP PDU.
  • the value corresponding to the type field is the default value.
  • the method of using the different layer 2 hopping protocol stacks by the sending end UE may be different by using different preset values.
  • the value of the SDU type field is 011
  • the value of the SDU type field is 111
  • the SDU type field corresponding to the PC5 PDCP PDU is set to 011, and the sending end is in layer 2 as shown in FIG. 3b.
  • the SDU of the PC5 PDCP PDU is set.
  • the value corresponding to the type field is 111.
  • the receiving end UE determines, according to the indication information in the data packet, processing the data packet by using a layer 2 relay data processing manner.
  • the receiving end UE checks the SDU type field of the PDCP PDU of the data packet in the PC5 PDCP layer, and finds that the value corresponding to the SDU type field of the PDCP PDU is a preset value, and determines that the data packet sent by the sending end UE is layer 2 according to the preset value. Relay data. Therefore, the data packet is processed by the processing method of layer 2 relay data.
  • the PC5 PDCP layer processes the data packet and delivers it to the adaptation layer of the receiving UE, as shown in FIG. 7a. Shown in 7b.
  • the PC5 PDCP layer processes the data packet and delivers it to the Uu PDCP layer of the receiving UE, as shown in FIG. 8a and FIG. 8b. Show.
  • the method further includes:
  • the receiving end UE determines, according to the LCID field in the MAC PDU of the data packet, whether the established sub-shared channel logical channel identifier (SL-SCH LCID) SL-SCH LCID is established at the PC5 MAC layer. If the SLRB corresponding to the SL-SCH LCID is not established, the SLRB corresponding to the SL-SCH LCID is established, and the functional entity of the protocol stack corresponding to the SL-SCH LCID is established. For example, for the protocol stack FIG. 3a, a PC5 RLC entity corresponding to the SL-SCH LCID and a PC5 PDCP entity and an adaptation layer entity are established.
  • SL-SCH LCID sub-shared channel logical channel identifier
  • a PC5 RLC entity corresponding to the SL-SCH LCID and a PC5 PDCP entity are established.
  • a PC5 RLC entity and an adaptation layer entity corresponding to the SL-SCH LCID are established.
  • the PC5 RLC entity corresponding to the SL-SCH LCID is established.
  • the sending end UE sets the indication information in the data packet, and is used to indicate that the data sent by the sending end UE is the layer 2 relay data, so that the receiving end UE adopts the layer 2 relay data processing manner, Process the packet correctly.
  • the SLRB corresponding to the SL-SCH LCID may be configured by the base station, and the base station sends the configuration information of the SLRB to the transmitting UE and the receiving UE, and the sending UE and the receiving UE establish the SL according to the configuration information sent by the base station.
  • Each functional entity corresponding to the SCH LCID may be configured by the base station, and the base station sends the configuration information of the SLRB to the transmitting UE and the receiving UE, and the sending UE and the receiving UE establish the SL according to the configuration information sent by the base station.
  • the PDCP layer on the transmitting end disables the header compression, encryption, and integrity protection functions for the layer 2 relay data packet.
  • the receiving end UE determines, according to the indication information of the data packet, that the data packet is the layer 2 relay data, and the PDCP layer at the receiving end disables the functions of header decompression, decryption and integrity protection on the data packet.
  • the PDCP layer on the transmitting end disables header compression, encryption, and integrity protection for data packets, which reduces the complexity of data processing and improves data processing efficiency.
  • whether the function of the header compression/decompression, encryption/decryption, and integrity protection is disabled on the layer 2 relay data packet at the transmitting end PC5 PDCP layer and the receiving end PC5 PDCP is determined according to the configuration information of the base station. If the base station is configured on the transmitting end PC5 PDCP layer and the receiving end PC5 PDCP to layer 2 relay data packet to disable header compression/decompression, encryption/decryption and integrity protection, then at the transmitting end PC5 PDCP layer and receiving end PC5 PDCP Disables header compression/decompression, encryption/decryption, and integrity protection for Layer 2 relay packets.
  • the base station is configured to transmit header compression/decompression, encryption/decryption, and integrity protection to the Layer 2 relay packet on the transmitting end PC5 PDCP layer and the receiving end PC5 PDCP, the PDCP layer and the receiving end PC5 PDCP at the transmitting end PC5 Disables header compression/decompression, encryption/decryption, and integrity protection for Layer 2 relay packets.
  • the base station can be equipped Setting the default state to disable header compression/decompression, encryption/decryption, and integrity protection for Layer 2 trunk packets requires header compression/decompression, encryption/decryption, and integrity for Layer 2 relay packets.
  • the configuration information is sent to the sender UE and the receiver UE to indicate that the PDCP layer and the receiver PC5 PDCP at the transmitting end enable the header compression/decompression, encryption/decryption, and integrity protection functions for the data packet.
  • the base station can configure the default state to enable header compression/decompression, encryption/decryption, and integrity protection for the data packet, and then need to disable header compression/decompression, encryption/decryption, and integrity protection for the data packet.
  • FIG. 9 is a schematic flowchart of Embodiment 2 of a data sending method of the present application.
  • the layer 2 relay described in the embodiment shown in Fig. 9 is a scenario for the protocol stack shown in any of Figs. 3a-3d.
  • This embodiment sets the indication information in the PC5 MAC PDU to indicate that the data packet is layer 2 relay data.
  • the processing mode of the layer 2 relay protocol stack is adopted, and the SL-SCH LCID adopts the SL-SCH LCID in the preset set; that is, when the SL-SCH LCID belongs to the SL-SCH LCID in the preset set,
  • the sender uses the layer 2 relay data processing method.
  • S901 The transmitting end UE sends a data packet to the receiving end UE.
  • the data packet includes indication information, where the indication information is used to indicate that the data packet is layer 2 relay data.
  • the indication information is an LCID field of the MAC PDU.
  • the data packet is layer 2 relay data. .
  • the preset set is a set of partial values between 00001 and 01010; or the preset set is a set of values between 01011 and 11011; or The preset set is a set of partial values between 01011-11011; or the preset set is a partial value between 00001-01010 and a partial value between 01011-11011 Collection. It may also be a preset set of other data for layer 2 relay, which is not limited in this application.
  • the preset set may also be configured by the base station, and the base station may send the indication information to the sending end UE and the receiving end UE in a broadcast manner or a unicast manner, where the indication information includes the preset set.
  • S902 The receiving end UE determines to establish an SLRB for layer 2 relay according to the indication information of the data packet.
  • the SLRB of the layer 2 relay is established, and the function entity corresponding to the layer 2 relay protocol stack is established.
  • the receiving end UE determines, according to the LCID field of the MAC PDU, that the SL-SCH LCID belongs to the SL-SCH LCID in the preset set, and then establishes the SLRB for the layer 2 relay corresponding to the SL-SCH LCID, including establishing the layer 2 Following the functional entity corresponding to the protocol stack.
  • the protocol stack of the layer 2 relay supported by the receiving UE and the transmitting UE is as shown in FIG. 3a, and the functional entity shown in FIG. 3a corresponding to the first SLRB is established.
  • a functional entity of the PC5 RLC entity, the PC5 PDCP entity, and the adaptation layer is established.
  • the protocol stack of the layer 2 relay supported by the receiving end UE and the transmitting end UE establishes a functional entity as shown in FIG. 3b corresponding to the first SLRB. Specifically, a PC5 RLC, PC5 PDCP entity is established.
  • the protocol stack of the layer 2 relay supported by the receiving end UE and the transmitting end UE establishes a functional entity as shown in FIG. 3c corresponding to the first SLRB. Specifically, a functional entity of the PC5 RLC entity and the adaptation layer is established.
  • the protocol stack of the layer 2 relay supported by the receiving end UE and the transmitting end UE establishes a functional entity as shown in FIG. 3d corresponding to the first SLRB. Establish a PC5 RLC entity.
  • the method further includes: the receiving end UE determines, according to the SL-SCH LCID in the PC5 MAC PDU of the data packet, that the SLRB corresponding to the SL-SCH LCID is not established, that is, the layer 2 corresponding to the SL-SCH LCID Following the functional entity corresponding to the protocol stack.
  • the method further includes: S903: The receiving end UE processes the data packet according to a processing manner of the layer 2 relay data.
  • the MAC layer processes the data packet and delivers the data packet to the RLC entity corresponding to the SL-SCH LCID.
  • the MAC layer processes the data packet and delivers the data packet to the RLC entity corresponding to the SL-SCH LCID.
  • the MAC layer processes the data packet and delivers the data packet to the RLC entity corresponding to the SL-SCH LCID.
  • the MAC layer processes the data packet and delivers the data packet to the RLC entity corresponding to the SL-SCH LCID.
  • the sending end UE sets the indication information in the data packet to indicate that the data packet is layer 2 relay data, so that the receiving end UE adopts the layer 2 relay data processing manner to correctly process the data packet.
  • FIG. 14 is a schematic flowchart diagram of Embodiment 3 of a data sending method according to the present application.
  • the base station sends configuration information to the receiving end UE and the sending end UE, where the configuration information includes a preset set of SL-SCH LCIDs for the layer 2 relay.
  • the preset set is as described in S901, and details are not described herein again.
  • the sending end UE sends a data packet to the receiving end UE.
  • the SL-SCH LCID in the PC5 MAC PDU is set to the SL-SCH LCID in the preset set.
  • S1203 The receiving end UE determines to establish an SLRB for layer 2 relay according to the indication information of the data packet.
  • the receiving end UE processes the data packet according to a processing manner of layer 2 relay data.
  • the sending end UE sets the indication information in the data packet, and is used to indicate that the sending end UE adopts The processing mode of the layer 2 relay protocol stack is used, so that the receiving UE learns that the data packet adopts the processing mode of the layer 2 relay protocol stack to correctly process the data packet.
  • FIG. 13 is a schematic flowchart diagram of Embodiment 4 of a data sending method of the present application.
  • the base station sends configuration information to the receiving UE and the sending UE.
  • the configuration information includes configuration information of the SL-SCH LCID and the SLRB, and the SL-SCH LCID is one of the preset sets.
  • the configuration information of the SLRB includes configuration information of each entity of the layer 2 protocol stack corresponding to the SLRB.
  • the preset set is as described in S901, and details are not described herein again.
  • S1302 The transmitting end UE and the receiving end UE establish an SLRB for layer 2 relay according to the configuration information.
  • the configuration information is sent by the base station to the receiving end UE and the transmitting end UE, where the configuration information includes the configuration information of the SL-SCH LCID and the functional entity of the SLRB corresponding layer 2 protocol stack, where the SL-SCH LCID is a preset set.
  • the SL-SCH LCID is a preset set.
  • One of the UEs and the transmitting end UE establishes the SLRB corresponding to the SL-SCH LCID and configures each functional entity of the corresponding layer 2 protocol stack. Therefore, the receiving end UE can adopt the layer 2 relay protocol stack processing manner on the data packet according to the SL-SCH LCID.
  • the PDCP layer at the transmitting end disables header compression, encryption, and integrity protection for the data packet.
  • the receiving end UE determines, according to the indication information of the data packet, that the data packet is the layer 2 relay data, and the PDCP layer at the receiving end disables the functions of header decompression, decryption and integrity protection on the data packet.
  • the PDCP layer on the transmitting end disables header compression, encryption, and integrity protection for data packets, which reduces the complexity of data processing and improves data processing efficiency.
  • whether the function of the header compression/decompression, encryption/decryption, and integrity protection is disabled on the data packet at the transmitting end PC5 PDCP layer and the receiving end PC5 PDCP is determined according to the configuration information of the base station. If the base station is configured on the transmitting end PC5 PDCP layer and the receiving end PC5 PDCP to disable the header compression/decompression, encryption/decryption and integrity protection functions for the data packet, the PDCP layer and the receiving end PC5 PDCP disable the data packet at the transmitting end PC5. Header compression/decompression, encryption/decryption, and integrity protection.
  • the base station If the base station is configured on the transmitting end PC5 PDCP layer and the receiving end PC5 PDCP to enable header compression/decompression, encryption/decryption and integrity protection for the data packet, the PDCP layer and the receiving end PC5 PDCP are disabled for the data packet at the transmitting end PC5. Header compression/decompression, encryption/decryption, and integrity protection. Alternatively, the base station can configure the default state to disable header compression/decompression, encryption/decryption, and integrity protection for the data packet, such as when header compression/decompression, encryption/decryption, and integrity protection are enabled for the data packet.
  • the base station can configure the default state to enable header compression/decompression, encryption/decryption, and integrity protection for the data packet, and then need to disable header compression/decompression, encryption/decryption, and integrity protection for the data packet.
  • the present application further provides an embodiment for distinguishing a sender UE by using a Layer 2 relay dedicated physical channel PSRCH.
  • the processing method of the layer 2 relay protocol stack is also the processing mode of the layer 3 relay protocol stack.
  • the implementation principle and technical effects are similar to those of the foregoing embodiments, and are not described here.
  • FIG. 16 is a schematic structural diagram of Embodiment 1 of a data processing apparatus according to the present application.
  • the apparatus in this embodiment includes a receiving module 1401 and a processing module 1402, where the receiving module 1401 is configured to receive a data packet sent by a sending UE, in a data packet.
  • the instruction module 1402 is configured to determine, according to the indication information, that the data packet is processed by using the layer 2 relay data processing manner.
  • the indication information is a service data unit SDU type field of a packet data convergence protocol protocol data unit PDCP PDU of the data packet; the value of the SDU type field is a preset value.
  • the preset value is 011 or 100 or 101 or 110 or 111.
  • the indication information is a logical channel identifier LCID field of a media access control protocol data unit MAC PDU of the data packet, and the value of the LCID field is a value in the preset set.
  • the preset set is a set of partial values between 00001 and 01010;
  • the preset set is a set of values between 01011-11011;
  • the preset set is a set of partial values between 01011-11011;
  • the preset set is a set of partial values between 00001-01010 and a partial value between 01011-11011.
  • the processing module 1402 is specifically configured to control the PC5 PDCP layer to disable the header decompression function and/or the decryption function and/or the integrity protection function for the data packet.
  • the receiving module is further configured to receive configuration information of the base station, where the configuration information indicates that the PC5 PDCP of the receiving end UE disables the header decompression function and/or the decryption function and/or the integrity protection function.
  • the device in this embodiment is applicable to the technical solution of the embodiment shown in FIG. 4, and the implementation principle and the technical effect are similar, and details are not described herein again.
  • FIG. 17 is a schematic structural diagram of Embodiment 2 of a data processing apparatus provided by the present application.
  • the apparatus in this embodiment includes a receiving module 1501 and a processing module 1502, where the receiving module 1501 is configured to receive a sending by the sending end UE.
  • the data packet includes the indication information in the data packet.
  • the processing module 1502 is configured to determine, according to the indication information, the establishment of the secondary link radio bearer SLRB for the layer 2 relay.
  • the indication information is a logical channel identifier LCID field of the media access control protocol data unit MAC PDU of the data packet.
  • the value of the LCID field is a value in the preset set, and the LCID in the preset set is used for the layer 2 relay.
  • the preset set is a set of partial values between 00001 and 01010;
  • the preset set is a set of values between 01011-11011;
  • the preset set is a set of partial values between 01011-11011;
  • the preset set is a set of partial values between 00001-01010 and a partial value between 01011-11011.
  • the receiving module 1501 is further configured to receive configuration information sent by the base station, where the configuration information includes a preset set.
  • the device in this embodiment is applicable to the technical solution of the embodiment shown in FIG. 9 , and the implementation principle and technical effects thereof are similar, and details are not described herein again.
  • FIG. 18 is a schematic structural diagram of Embodiment 3 of a data processing apparatus according to the present application.
  • the apparatus in this embodiment includes a receiving module 1601 and a processing module 1602.
  • the receiving module 1601 is configured to receive indication information sent by a base station, where the indication information is at least Include a logical channel identifier LCID;
  • the processing module 1602 is configured to use the indication information
  • a secondary link radio bearer SLRB for layer 2 relay is established.
  • the value of the LCID is a value in the preset set, and the LCID in the preset set is used for the layer 2 relay.
  • the preset set is a set of partial values between 00001 and 01010;
  • the preset set is a set of values between 01011-11011;
  • the preset set is a set of partial values between 01011-11011;
  • the preset set is a set of partial values between 00001-01010 and a partial value between 01011-11011.
  • the indication information further includes configuration parameters for establishing a medium access control MAC layer and/or a radio link control RLC layer and/or a PC5 adaptation layer of the SLRB for layer 2 relay.
  • the device in this embodiment is applicable to the technical solution of the embodiment shown in FIG. 15.
  • the implementation principle and technical effects are similar, and details are not described herein again.
  • FIG. 19 is a schematic structural diagram of Embodiment 4 of a data processing apparatus according to the present application.
  • the apparatus of this embodiment includes a receiver 1701 and a processor 1702, where the receiver 1701 is configured to receive a data packet sent by the UE at the sending end, in the data packet.
  • the indication information is included; the processor 1702 is configured to determine, according to the indication information, that the data packet is processed by using a layer 2 relay data processing manner.
  • the device in this embodiment is applicable to the technical solution of the embodiment shown in FIG. 4, and the implementation principle and the technical effect are similar, and details are not described herein again.
  • FIG. 20 is a schematic structural diagram of Embodiment 5 of the data processing apparatus provided by the present application.
  • the apparatus of this embodiment includes a receiver 1801 and a processor 1802, where the receiver 1801 is configured to receive a sending by the UE.
  • the data packet includes the indication information in the data packet.
  • the processor 1802 is configured to determine, according to the indication information, the establishment of the secondary link radio bearer SLRB for the layer 2 relay.
  • the device in this embodiment is applicable to the technical solution of the embodiment shown in FIG. 9 , and the implementation principle and technical effects thereof are similar, and details are not described herein again.
  • FIG. 21 is a schematic structural diagram of Embodiment 6 of a data processing apparatus according to the present application.
  • the apparatus of this embodiment includes a receiver 1901 and a processor 1902, where the receiver 1901 is configured to receive indication information sent by a base station, where the indication information is at least A logical channel identifier LCID is included; the processor 1902 is configured to establish a secondary link radio bearer SLRB for the layer 2 relay according to the indication information.
  • the device in this embodiment is applicable to the technical solution of the embodiment shown in FIG. 15.
  • the implementation principle and technical effects are similar, and details are not described herein again.

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Abstract

本申请提供一种数据处理方法和装置，通过接收端用户设备UE接收发送端UE发送的数据包，数据包中包含指示信息，其中，指示信息用于指示数据包为层2中继数据；接收端UE根据指示信息，确定采用层2中继数据的处理方式处理数据包，使接收端UE获知该数据包采用层2中继数据的处理方式，以正确处理数据包。

Description

数据处理方法和装置 技术领域
本申请涉及通信技术，尤其涉及一种数据处理方法和装置。
背景技术
长期演进(Long Term Evolution，LTE)支持用户设备(User Equipment，UE)和UE之间的短距离通信，即LTE设备到设备(Device-to-Device，简称：D2D)技术。
利用LTE D2D技术，使得在远端UE通过在演进型基站(Evolved Node B，eNB)覆盖范围内的中继UE与eNB进行通信。现有技术中，远端UE和中继UE采用层3中继协议栈的处理方式。为了增强LTE D2D技术，远端UE和中继UE还支持层2中继协议栈的处理方式，层2中继协议栈与层3中继协议栈不同。发送端UE可以采用层2中继协议栈的处理方式，也可以采用层3中继协议栈的处理方式，其中，远端UE作为发送端UE时，中继UE作为接收端UE；中继UE作为发送端UE时，远端UE作为接收端UE。
然而，当发送端UE和接收端UE同时支持两种中继协议栈的处理方式时，接收端UE无法获知发送端UE采用的是哪种中继协议栈的处理方式，使得数据无法正确处理。
发明内容
本申请提供一种数据处理方法和装置，用于解决接收端UE无法获知发送端UE采用的是哪种中继协议栈的处理方式，使得数据无法正确处理的问题。
一个方面，本申请提供数据处理方法，包括：接收端用户设备UE接收发送端UE发送的数据包，数据包中包含指示信息，其中，指示信息中用于指示数据包为层2中继数据；接收端UE根据指示信息，确定采用层2中继数据的处理方式处理数据包，使接收端UE获知该数据包采用层2中继数据的处理方式，以正确处理数据包。
在一种可能的设计中，指示信息是数据包的分组数据汇聚协议协议数据单元PDCP PDU的服务数据单元SDU类型字段；SDU类型字段的取值为预设值。
在一种可能的设计中，预设值为011或100或101或110或111。
在一种可能的设计中，指示信息是数据包的媒体接入控制协议数据单元MAC PDU的逻辑信道标识LCID字段，LCID字段的取值为预设集合中的数值。
在一种可能的设计中，预设集合为取值在00001-01010之间的部分数值的集合；
或者，预设集合为取值在01011-11011之间的数值的集合；
或者，预设集合为取值在01011-11011之间的部分数值的集合；
或者，预设集合为取值在00001-01010之间的部分数值和取值在01011-11011之间的部分数值的集合。
在一种可能的设计中，还包括：接收端UE接收基站发送第一配置信息，所述第一配置信息包含所述预设集合。
在一种可能的设计中，接收端UE采用层2中继数据的处理方式处理数据包，包括：
接收端UE的PC5 PDCP层对数据包禁用报头解压缩功能和/或解密功能和/或完整 性保护功能。
在一种可能的设计中，接收端UE的PC5 PDCP层对数据包禁用报头解压缩功能和/或解密功能和/或完整性保护功能之前，还包括：
接收端UE接收基站发送的第二配置信息，所述第二配置信息指示接收端UE的PC5PDCP禁用报头解压缩功能和/或解密功能和/或完整性保护功能。
在一种可能的设计中，接收端UE为远端UE，发送端UE为中继UE；或者，接收端UE为中继UE，发送端UE为远端UE。
另一方面，本申请提供一种数据处理方法，包括：接收端用户设备UE接收发送端UE发送的数据包，数据包中包含指示信息；其中，指示信息中用于指示数据包为层2中继数据；接收端UE根据指示信息，确定建立用于层2中继的副链路无线承载SLRB。
在一种可能的设计中，指示信息是数据包的媒体接入控制协议数据单元MAC PDU的逻辑信道标识LCID字段，LCID字段的取值为预设集合中的数值，预设集合中的LCID用于层2中继。
在一种可能的设计中，预设集合为取值在00001-01010之间的部分数值的集合；
或者，预设集合为取值在01011-11011之间的数值的集合；
或者，预设集合为取值在01011-11011之间的部分数值的集合；
或者，预设集合为取值在00001-01010之间的部分数值和取值在01011-11011之间的部分数值的集合。
在一种可能的设计中，还包括：
接收端UE接收基站发送的配置信息，配置信息中包含预设集合。
在一种可能的设计中，接收端UE为远端UE，发送端UE为中继UE；或者，接收端UE为中继UE，发送端UE为远端UE。
再一方面，本申请提供一种数据处理方法，包括：
用户设备UE接收基站发送的指示信息，其中，指示信息至少包含逻辑信道标识LCID；
UE根据指示信息建立用于层2中继的副链路无线承载SLRB。
在一种可能的设计中，LCID的取值为预设集合中的数值，预设集合中的LCID用于层2中继；
其中，预设集合为取值在00001-01010之间的部分数值的集合；
或者，预设集合为取值在01011-11011之间的数值的集合；
或者，预设集合为取值在01011-11011之间的部分数值的集合；
或者，预设集合为取值在00001-01010之间的部分数值和取值在01011-11011之间的部分数值的集合。
在一种可能的设计中，指示信息还包括用于建立用于层2中继的SLRB的媒体接入控制MAC层和/或无线链路控制RLC层和/或PC5适配层的配置参数。
在一种可能的设计中，UE是中继UE或远端UE，其中，远端UE可以通过中继UE与基站通信。
应理解，本申请中的接收端UE、发送端UE可以是智能手机，可穿戴设备(如智能手表等)，物联网设备等通信设备，或者其它通信设备，本申请对此不作限制。
又一方面，本申请提供一种数据处理装置，包括：
接收模块，用于接收发送端UE发送的数据包，数据包中包含指示信息；处理模块，用于根据指示信息，确定采用层2中继数据的处理方式处理数据包。
在一种可能的设计中，指示信息是数据包的分组数据汇聚协议协议数据单元PDCP PDU的服务数据单元SDU类型字段；SDU类型字段的取值为预设值。
在一种可能的设计中，预设值为011或100或101或110或111。
在一种可能的设计中，指示信息是数据包的媒体接入控制协议数据单元MAC PDU的逻辑信道标识LCID字段，LCID字段的取值为预设集合中的数值。
在一种可能的设计中，预设集合为取值在00001-01010之间的部分数值的集合；
或者，预设集合为取值在01011-11011之间的数值的集合；
或者，预设集合为取值在01011-11011之间的部分数值的集合；
或者，预设集合为取值在00001-01010之间的部分数值和取值在01011-11011之间的部分数值的集合。
在一种可能的设计中，接收模块，还用于接收基站发送的第一配置信息，第一配置信息包含所述预设集合。
在一种可能的设计中，处理模块具体用于控制PC5 PDCP层对数据包禁用报头解压缩功能和/或解密功能和/或完整性保护功能。
在一种可能的设计中，接收模块，还用于接收基站发送的第二配置信息，第二配置信息指示接收端UE的PC5 PDCP禁用报头解压缩功能和/或解密功能和/或完整性保护功能。
又一方面，本申请提供一种数据处理装置，包括：
接收模块，用于接收发送端UE发送的数据包，数据包中包含指示信息；处理模块，用于根据指示信息，确定建立用于层2中继的副链路无线承载SLRB。
在一种可能的设计中，指示信息是数据包的媒体接入控制协议数据单元MAC PDU的逻辑信道标识LCID字段，LCID字段的取值为预设集合中的数值，预设集合中的LCID用于层2中继。
在一种可能的设计中，预设集合为取值在00001-01010之间的部分数值的集合；
或者，预设集合为取值在01011-11011之间的数值的集合；
或者，预设集合为取值在01011-11011之间的部分数值的集合；
或者，预设集合为取值在00001-01010之间的部分数值和取值在01011-11011之间的部分数值的集合。
在一种可能的设计中，接收模块，还用于接收基站发送的配置信息，配置信息中包含预设集合。
又一方面，本申请提供一种数据处理装置，包括：
接收模块，用于接收基站发送的指示信息，其中，指示信息至少包含逻辑信道标识LCID；处理模块，用于根据指示信息建立用于层2中继的副链路无线承载SLRB。
在一种可能的设计中，LCID的取值为预设集合中的数值，预设集合中的LCID用于层2中继；其中，预设集合为取值在00001-01010之间的部分数值的集合；或者，预设集合为取值在01011-11011之间的数值的集合；或者，预设集合为取值在 01011-11011之间的部分数值的集合；或者，预设集合为取值在00001-01010之间的部分数值和取值在01011-11011之间的部分数值的集合。
在一种可能的设计中，指示信息还包括用于建立用于层2中继的SLRB的媒体接入控制MAC层和/或无线链路控制RLC层和/或PC5适配层的配置参数。
附图说明
图1为本申请提供的一种应用场景示意图；
图2为本申请层3中继协议栈的一种架构示意图
图2a为本申请UE与UE通信的一种D2D协议栈架构示意图；
图3a-图3d为本申请层2中继协议栈的架构示意图；
图4为本申请数据发送方法实施例一的流程示意图；
图5为本申请PC5 PDCP PDU的格式示意图；
图6为本申请PC5 PDCP PDU的SDU类型字段的取值与描述示意图；
图7a-图7b为本申请的数据处理的一种场景示意图；
图8a-图8b为本申请的数据处理的另一种场景示意图；
图9为本申请数据发送方法实施例二的流程示意图；
图10a-图10b为本申请的数据处理的再一种场景示意图；
图11a-图11b为本申请的数据处理的又一种场景示意图；
图12a-图12b为本申请的数据处理的一种场景示意图；
图13a-图13b为本申请的数据处理的一种场景示意图；
图14为本申请数据发送方法实施例三的流程示意图；
图15为本申请数据发送方法实施例四的流程示意图；
图16为本申请提供的数据处理装置实施例一的结构示意图；
图17为本申请提供的数据处理装置实施例二的结构示意图；
图18为本申请提供的数据处理装置实施例三的结构示意图；
图19为本申请提供的数据处理装置实施例四的结构示意图；
图20为本申请提供的数据处理装置实施例五的结构示意图；
图21为本申请提供的数据处理装置实施例六的结构示意图。
具体实施方式
图1为本申请提供的一种应用场景示意图，如图1所示，本申请的技术方案可应用于3G、LTE、5G以及5G后等通信系统，远端UE可以使用D2D技术通过中继UE与基站进行通信，其中，中继UE在基站的覆盖范围内，远端UE可以在基站的覆盖范围内也可以在基站的覆盖范围外。本申请所描述的远端UE和中继UE同时支持两种协议栈的D2D技术，其中，一种为层3中继协议栈，另一种为层2中继协议栈，层3中继是指中继功能在IP层实现，层2中继是指中继功能在分组数据汇聚协议(Packet Data Convergence Protocol，PDCP)层、无线链路控制(Radio Link Control，RLC)层、媒质接入控制(Medium Access Control，MAC)层、PDCP层和RLC层之间或者RLC层和MAC层之间实现。图2为本申请层3中继协议栈的一种架构示意图，图3a-图3d为 本申请层2中继协议栈的架构示意图。远端UE还可以与中继UE进行UE和UE之间的通信，协议栈如图2a所示，本申请所描述的D2D技术可以是LTE D2D(又名Sidelink)或5G D2D(又名5G Sidelink)技术。
以LTE通信系统为例，其他通信系统的原理类似，参照LTE通信系统的描述，不再一一赘述。
下面分别介绍图2-图3d中每种协议栈的架构和工作流程。
首先，介绍两种接口类型：
PC5:UE和UE之间进行D2D通信的无线接口。
Uu：UE和eNB之间通信的无线接口。
需注意的是本申请所说的PC5 PDCP，PC5 RLC，PC5 MAC，PC5 PHY指的是PC5接口上的PDCP，RLC，MAC，PHY层。本申请所说的Uu PDCP，Uu RLC，Uu MAC，Uu PHY指的是Uu接口上的PDCP，RLC，MAC，PHY层。其中，层2中继协议栈中远端UE与基站之间虽然没有直接通信，但是存在逻辑上的“Uu接口”，只不过这个逻辑上的“Uu接口”只有PDCP层。
针对图2所示的协议栈架构：
上行数据包的发送过程如下：
远端UE生成互联网协议(Internet Protocol，IP)数据包之后，由远端UE的IP层发送给远端UE的PC5 PDCP层，PC5 PDCP层处理后发送给PC5 RLC，PC5 RLC层处理后发送给PC5 MAC层，PC5 MAC层处理后发送给PC5 PHY层；远端UE的PC5 PHY层处理后通过物理信道发送给中继UE的PC5 PHY层，PC5 PHY层处理后向上递交给PC5 MAC层，PC5 MAC层处理后向上递交给PC5 RLC层，PC5 RLC层处理后向上递交给PC5 PDCP层，PC5 PDCP层处理后发送给IP中继层，IP中继层进行与中继相关的处理，例如：将远端UE的IP地址转换成中继UE的IP地址等，IP中继层处理后发送给Uu PDCP层，Uu PDCP层处理后发送给Uu RLC层，Uu RLC层处理后发送给Uu MAC层，Uu MAC层处理后发送给Uu PHY层，Uu PHY层处理后发送给eNB的Uu PHY层，后续处理过程不再赘述。
下行数据包的发送过程：
下行数据包的发送过程与上行数据包的发送过程类似，由中继UE的Uu PHY层接收到eNB的Uu PHY层的数据包后，按照与上行数据包的发送相反的顺序依次发送到远端UE的IP层，其中，中继UE的IP中继层进行与中继相关的处理，例如：将中继UE的IP地址转换成远端UE的IP地址等。
针对图3a所示的协议栈架构：
上行数据包的发送过程如下：
远端UE生成IP数据包之后，由远端UE的IP层发送给远端UE的Uu PDCP层，Uu PDCP处理后发送给远端UE的适配层，适配层进行处理，例如添加Uu RBID或第一指示信息作为包头，第一指示信息用于指示将该数据包发送给eNB，适配层处理后发送给PC5 PDCP，PC5 PDCP层处理后发送给PC5 RLC，PC5 RLC层处理后发送给PC5 MAC层，PC5 MAC层处理后发送给PC5 PHY层；远端UE的PC5 PHY层处理后通过物理信道发送给中继UE的PC5 PHY层，PC5 PHY层处理后向上递交给PC5 MAC层，PC5 MAC层 处理后向上递交给PC5 RLC层，PC5 RLC层处理后向上递交给PC5 PDCP层，PC5 PDCP层处理后发送给第一适配层，第一适配层读取适配层包头信息，确定该数据包是发给eNB的，则在进行相应处理后，例如去掉适配层包头，将该数据包发送给第二适配层，第二适配层进行处理，例如对数据包添加第二指示信息，第二指示信息用于指示该数据包来源于远端UE，可以是远端UE的UE ID；例如根据远端UE的无线承载标识(Radio Bear Identification，RBID)(Uu)与中继UE的RBID(Uu)的映射关系，确定使用中继UE的哪个RB的资源传输该数据包，或者根据远端UE的副链路无线承载(Sidelink Radio bear，SLRB)与中继UE的RB(Uu)的映射关系，确定使用中继UE的哪个RB的资源传输该数据包。第二适配层处理后发送给传输数据包的中继UE的RB(Uu)对应的Uu RLC实体，Uu RLC实体处理后发送给Uu MAC层，Uu MAC层处理后发送给Uu PHY层，Uu PHY层处理后发送给eNB的Uu PHY层，eNB的Uu PHY层处理后递交给Uu MAC层，Uu MAC层处理后递交给Uu RLC层，Uu RLC层处理后，递交给适配层进行处理，例如去掉适配层包头，根据第二指示信息确定该数据包来源于哪个远端UE，适配层处理后发送给Uu PDCP层，后续处理过程不再赘述。
下行数据包的发送过程：
下行数据包的发送过程与上行数据包的发送过程类似，由中继UE的Uu PHY层接收到eNB的Uu PHY层发来的数据包后，按照与上行数据包相反的顺序依次发送到远端UE的IP层，在下行过程中，中继UE的适配层根据远端UE的标识，识别该数据包是发送给哪个远端UE的，根据远端UE的SLRB与中继UE的RB(Uu)的映射关系确定对应中继UE和远端UE之间的哪个SLRB。适配层对数据处理后发送给SLRB对应的PC5PDCP实体，后续处理过程不再赘述。
针对图3b所示的协议栈架构：
图3b与图3a的协议栈架构不同的是图3b中远端UE没有适配层，中继UE没有第一适配层。
图3b的上行数据包的发送过程与下行数据包的发送过程与图3a类似，参见图3a中的相关描述，此处不再赘述。
针对图3c所示的协议栈架构：
图3c与图3a的协议栈架构不同的是图3c中远端UE和中继UE没有PC5 PDCP层。
图3c与图3a的上行数据包的发送过程不同的是，在图3c中，远端UE的适配层将数据包处理后发送给远端UE的PC5 RLC，中继UE的PC5 RLC将数据包处理后递交给第一适配层，其他步骤相同，此处不再赘述。
图3c与图3a的下行数据包的发送过程不同的是，在图3c中，中继UE的第一适配层对数据包处理后发送给PC5 RLC，远端UE的PC5 RLC对数据包处理后向上递交给远端UE的适配层，其他步骤相同，此处不再赘述。
图3c通过减少PC5 PDCP层的处理，降低数据处理的复杂度，提高数据处理效率。
针对图3d所示的协议栈架构：
图3d与图3c不同的是图3d中远端UE没有适配层，中继UE没有第一适配层。
图3d的上行数据包的发送过程与下行数据包的发送过程与图3c类似，参见图3c中的相关描述，此处不再赘述。
当远端UE采用层2中继协议栈发送数据时，中继UE相应地要采用层2中继协议栈的处理方式接收数据包。当远端UE采用层3中继协议栈发送数据时，中继UE相应地要采用层3中继协议栈的处理方式接收数据包。当中继UE采用层2中继协议栈发送数据时，远端UE相应地要采用层2中继协议栈的处理方式接收数据包。当中继UE采用层3中继协议栈发送数据时，远端UE相应地要采用层3中继协议栈的处理方式接收数据包。当远端UE采用PC5协议栈发送数据时，中继UE相应地要采用PC5协议栈的处理方式接收数据包，反之亦然。
本申请为了使接收端UE能够采用与发送端UE相同的协议栈的处理方式，提供了如下实施例，其中，发送端UE为远端UE时，接收端UE为中继UE；发送端UE为中继UE时，接收端UE为远端UE。
图4为本申请数据发送方法实施例一的流程示意图。图4所示实施例所描述的层2中继协议栈是针对图3a或图3b所示的协议栈的场景。该实施例通过在PC5 PDCP层设置指示信息，以指示数据包为层2中继数据，以采用层2中继数据的处理方式，即采用如图3a或图3b所示的协议栈的处理方式。具体地，可以通过设置PDCP协议数据单元(Protocol Data Unit，PDU)PDU的业务数据单元(Service Data Unit，SDU)类型字段为一预设值，当SDU类型字段为该预设值时指示发送端UE发送的数据包为层2中继数据。其中，PC5 PDCP PDU的格式如图5所示，SDU类型字段的取值与对应的描述如图6所示。本申请提供的一种可能的实现方式利用SDU类型字段中保留值中的某一个数值作为预设值，用以指示发送端UE发送的数据包为层2中继数据。
S401：发送端UE向接收端UE发送数据包。
其中，数据包中包含指示信息，所述指示信息用于指示数据包为层2中继数据，层2中继数据指采用层2中继协议栈的处理方式处理的数据。
可选地，所述指示信息的一种实现方式为：
发送端UE将所述数据包的PDCP PDU的SDU类型字段设置为预设值。例如：当SDU类型字段的取值为011时，用于指示发送端UE采用层2中继协议栈的处理方式。该预设值也可以是111或者100或者101或者110或者其他的取值，只要是约定用来数据包为层2中继数据即可，对此，本申请不作限制。
例如：接收端UE和发送端UE支持的层2中继的协议栈如图3a所示，发送端UE采用如图3a所示的层2中继协议栈的处理方式，则设置PDCP PDU的SDU类型字段对应的取值为预设值。
例如：接收端UE和发送端UE支持的层2中继的协议栈如图3b所示，发送端UE采用如图3b所示的层2中继协议栈的处理方式，则设置PDCP PDU的SDU类型字段对应的取值为预设值。
可选地，也可以通过不同的预设值，区分发送端UE采用不同的层2中继协议栈的处理方式，例如：SDU类型字段的取值为011时，用于指示发送端UE采用如图3a所示的层2中继协议栈的处理方式。SDU类型字段的取值为111时，用于指示发送端UE采用如图3b所示的层2中继协议栈的处理方式。若发送端UE采用如图3a所示的层2中继协议栈的处理方式，则设置PC5 PDCP PDU的SDU类型字段对应的取值为011，若发送端采用如图3b所示的层2中继协议栈的处理方式，则设置PC5 PDCP PDU的SDU 类型字段对应的取值为111。
S402：接收端UE根据数据包中的指示信息，确定采用层2中继数据的处理方式对所述数据包进行处理。
接收端UE在PC5 PDCP层检查数据包的PDCP PDU的SDU类型字段，发现PDCP PDU的SDU类型字段对应的取值为预设值，根据该预设值确定发送端UE发送的数据包为层2中继数据。因此，采用层2中继数据的处理方式对所述数据包进行处理。
例如：若接收端UE和发送端UE支持的层2中继的协议栈如图3a所示，PC5 PDCP层则将该数据包处理后递交给接收端UE的适配层，如图7a，图7b所示。
若接收端UE和发送端UE支持的层2中继的协议栈如图3b所示，PC5 PDCP层则将该数据包处理后递交给接收端UE的Uu PDCP层，如图8a，图8b所示。
可选地，在S402之前，还包括：
接收端UE在PC5 MAC层根据所述数据包的MAC PDU中的LCID字段，确定是否已建立副链路共享信道逻辑信道标识(Sidelink-Shared Channel Logical Channel Identity，SL-SCH LCID)SL-SCH LCID对应的SLRB，若未建立SL-SCH LCID对应的SLRB，则建立该SL-SCH LCID对应的SLRB，包括建立该SL-SCH LCID对应的协议栈的功能实体。例如，对于协议栈图3a，建立SL-SCH LCID对应的PC5 RLC实体和PC5 PDCP实体和适配层实体。例如，对于协议栈3b，建立SL-SCH LCID对应的PC5 RLC实体和PC5 PDCP实体。例如，对于协议栈3c，建立SL-SCH LCID对应的PC5 RLC实体和适配层实体。例如，对于协议栈图3d，建立SL-SCH LCID对应的PC5 RLC实体。
本实施例，通过发送端UE在数据包中设置指示信息，用于指示所述发送端UE发送的数据为层2中继数据，以使接收端UE采用层2中继数据的处理方式，以正确处理数据包。
可选地，建立SL-SCH LCID对应的SLRB，也可以由基站实现，基站向发送端UE和接收端UE发送SLRB的配置信息，发送端UE和接收端UE根据基站发送的配置信息建立该SL-SCH LCID对应的各功能实体。
可选地，在图4所示实施例的基础上，进一步地，还包括：
发送端UE采用层2中继协议栈时，在发送端PC5 PDCP层对层2中继数据包禁用报头压缩、加密和完整性保护等功能。相应地，接收端UE根据数据包的指示信息确定数据包为层2中继数据，则在接收端PC5 PDCP层对数据包禁用报头解压缩、解密和完整性保护等功能。通过发送端PC5 PDCP层对数据包禁用报头压缩、加密和完整性保护等功能，降低数据处理的复杂度，提高数据处理效率。
可选地，是否在发送端PC5 PDCP层和接收端PC5 PDCP对层2中继数据包禁用报头压缩/解压缩、加密/解密和完整性保护等功能，根据基站的配置信息确定。若基站配置在发送端PC5 PDCP层和接收端PC5 PDCP对层2中继数据包禁用报头压缩/解压缩、加密/解密和完整性保护等功能，则在发送端PC5 PDCP层和接收端PC5 PDCP对层2中继数据包禁用报头压缩/解压缩、加密/解密和完整性保护等功能。若基站配置在发送端PC5 PDCP层和接收端PC5 PDCP对层2中继数据包启用报头压缩/解压缩、加密/解密和完整性保护等功能，则在发送端PC5 PDCP层和接收端PC5 PDCP对层2中继数据包禁用报头压缩/解压缩、加密/解密和完整性保护等功能。或者，基站可配 置默认状态为对层2中继数据包禁用报头压缩/解压缩、加密/解密和完整性保护等功能，则需要对层2中继数据包启用报头压缩/解压缩、加密/解密和完整性保护等功能时，则向发送端UE和接收端UE发送配置信息，以指示在发送端PC5 PDCP层和接收端PC5 PDCP对数据包启用报头压缩/解压缩、加密/解密和完整性保护等功能。或者，基站可配置默认状态为对数据包启用报头压缩/解压缩、加密/解密和完整性保护等功能，则需要对数据包禁用报头压缩/解压缩、加密/解密和完整性保护等功能时，则向发送端UE和接收端UE发送配置信息，以指示在发送端PC5 PDCP层和接收端PC5 PDCP对数据包禁用报头压缩/解压缩、加密/解密和完整性保护等功能。对于具体采用何种配置方式，本申请不作限制。
图9为本申请数据发送方法实施例二的流程示意图。图9所示实施例所描述的层2中继是针对图3a-图3d中任一所示的协议栈的场景。该实施例通过在PC5 MAC PDU中设置指示信息，以指示数据包为层2中继数据。具体地，采用层2中继协议栈的处理方式，SL-SCH LCID采用预设集合中的SL-SCH LCID；即：当SL-SCH LCID属于该预设集合中的SL-SCH LCID时，说明发送端采用层2中继数据的处理方式。
S901：发送端UE向接收端UE发送数据包。
其中，所述数据包中包含指示信息，所述指示信息用于指示所述数据包为层2中继数据。
可选地，所述指示信息为MAC PDU的LCID字段，例如：所述PC5 MAC PDU中的SL-SCH LCID属于预设集合中的SL-SCH LCID时，则说明数据包为层2中继数据。
其中，LCID的索引与取值对照表如表1所示：
表1
Figure PCTCN2017078447-appb-000001
可选地，结合表1，预设集合为取值在00001-01010之间的部分数值的集合；或者，所述预设集合为取值在01011-11011之间的数值的集合；或者，所述预设集合为取值在01011-11011之间的部分数值的集合；或者，所述预设集合为取值在00001-01010之间的部分数值和取值在01011-11011之间的部分数值的集合。也可以是其他用于层2中继的数据的预设集合，对此，本申请不作限制。
可选地，预设集合也可以由基站配置，基站可以通过广播的方式或单播的方式为发送端UE和接收端UE发送指示信息，指示信息中包含上述预设集合。
S902：接收端UE根据所述数据包的指示信息，确定建立用于层2中继的SLRB。
建立层2中继的SLRB，包括建立层2中继协议栈对应的功能实体。
接收端UE根据MAC PDU的LCID字段，确定SL-SCH LCID属于预设集合中的SL-SCH LCID，则建立所述SL-SCH LCID对应的用于层2中继的SLRB，包括建立层2中继协议栈对应的功能实体。
例如：接收端UE和发送端UE支持的层2中继的协议栈如图3a所示，则建立第一SLRB对应的如图3a所示的功能实体。具体地，建立PC5 RLC实体、PC5 PDCP实体和适配层的功能实体。
接收端UE和发送端UE支持的层2中继的协议栈如图3b所示，则建立第一SLRB对应的如图3b所示的功能实体。具体地，建立PC5 RLC、PC5 PDCP实体。
接收端UE和发送端UE支持的层2中继的协议栈如图3c所示，则建立第一SLRB对应的如图3c所示的功能实体。具体地，建立PC5 RLC实体和适配层的功能实体。
接收端UE和发送端UE支持的层2中继的协议栈如图3d所示，则建立第一SLRB对应的如图3d所示的功能实体。建立PC5 RLC实体。
可选地，在S902之前，还包括：接收端UE根据数据包的PC5 MAC PDU中的SL-SCH LCID，确定未建立该SL-SCH LCID对应的SLRB，即SL-SCH LCID对应的层2中继协议栈对应的功能实体。
可选地，还可以包括：S903：接收端UE根据层2中继数据的处理方式对所述数据包进行处理。
如图10a,10b所示，若层2中继协议栈如图3a所示，MAC层将该数据包处理后递交给所述SL-SCH LCID对应的RLC实体。
如图11a,11b所示，若层2中继协议栈如图3b所示，MAC层将该数据包处理后递交给所述SL-SCH LCID对应的RLC实体。
如图12a,11b所示，若层2中继协议栈如图3c所示，MAC层将该数据包处理后递交给所述SL-SCH LCID对应的RLC实体。
如图13a,13b所示，若层2中继协议栈如图3d所示，MAC层将该数据包处理后递交给所述SL-SCH LCID对应的RLC实体。
本实施例，通过发送端UE在数据包中设置指示信息，用于指示数据包为层2中继数据，以使接收端UE采用层2中继数据的处理方式，以正确处理数据包。
图14为本申请数据发送方法实施例三的流程示意图。
S1201：基站向接收端UE和发送端UE发送配置信息，配置信息中包含用于层2中继的SL-SCH LCID的预设集合。
该预设集合如S901中的描述，此处不再赘述。
S1202：发送端UE向接收端UE发送数据包。
此步骤参见S901中的详细描述，此处不再赘述。其中，PC5 MAC PDU中的SL-SCH LCID设置为预设集合中的SL-SCH LCID。
S1203:接收端UE根据所述数据包的指示信息，确定建立用于层2中继的SLRB。
此步骤参见S902中的详细描述，此处不再赘述。
S1204：接收端UE根据层2中继数据的处理方式对所述数据包进行处理。
此步骤参见S903中的详细描述，此处不再赘述。
本实施例，通过发送端UE在数据包中设置指示信息，用于指示所述发送端UE采 用层2中继协议栈的处理方式，以使接收端UE获知该数据包采用层2中继协议栈的处理方式，以正确处理数据包。
图13为本申请数据发送方法实施例四的流程示意图。
S1301：基站向接收端UE和发送端UE发送配置信息。
其中，配置信息中包含SL-SCH LCID以及SLRB的的配置信息，该SL-SCH LCID为预设集合中的一个。可选地，SLRB的配置信息包括SLRB对应的层2协议栈各实体的配置信息。
该预设集合如S901中的描述，此处不再赘述。
S1302：发送端UE和接收端UE根据所述配置信息建立用于层2中继的SLRB。
本实施例，通过基站向接收端UE和发送端UE发送配置信息，其中配置信息中包含SL-SCH LCID以及SLRB对应层2协议栈的功能实体的配置信息，该SL-SCH LCID为预设集合中的一个，使得发送端UE和发送端UE建立该SL-SCH LCID对应的SLRB并配置相应的层2协议栈各功能实体。从而，使得接收端UE可以根据SL-SCH LCID对数据包采用层2中继协议栈的处理方式。
可选地，针对图3a和图3b所示的层2中继协议栈的场景，在图9或图14或图15所示实施例的基础上，进一步地，还包括：
发送端UE采用层2中继协议栈时，在发送端PC5 PDCP层对数据包禁用报头压缩、加密和完整性保护等功能。相应地，接收端UE根据数据包的指示信息确定数据包为层2中继数据，则在接收端PC5 PDCP层对数据包禁用报头解压缩、解密和完整性保护等功能。通过发送端PC5 PDCP层对数据包禁用报头压缩、加密和完整性保护等功能，降低数据处理的复杂度，提高数据处理效率。
可选地，是否在发送端PC5 PDCP层和接收端PC5 PDCP对数据包禁用报头压缩/解压缩、加密/解密和完整性保护等功能，根据基站的配置信息确定。若基站配置在发送端PC5 PDCP层和接收端PC5 PDCP对数据包禁用报头压缩/解压缩、加密/解密和完整性保护等功能，则在发送端PC5 PDCP层和接收端PC5 PDCP对数据包禁用报头压缩/解压缩、加密/解密和完整性保护等功能。若基站配置在发送端PC5 PDCP层和接收端PC5 PDCP对数据包启用报头压缩/解压缩、加密/解密和完整性保护等功能，则在发送端PC5 PDCP层和接收端PC5 PDCP对数据包禁用报头压缩/解压缩、加密/解密和完整性保护等功能。或者，基站可配置默认状态为对数据包禁用报头压缩/解压缩、加密/解密和完整性保护等功能，则需要对数据包启用报头压缩/解压缩、加密/解密和完整性保护等功能时，则向发送端UE和接收端UE发送配置信息，以指示在发送端PC5 PDCP层和接收端PC5 PDCP层对数据包启用报头压缩/解压缩、加密/解密和完整性保护等功能。或者，基站可配置默认状态为对数据包启用报头压缩/解压缩、加密/解密和完整性保护等功能，则需要对数据包禁用报头压缩/解压缩、加密/解密和完整性保护等功能时，则向发送端UE和接收端UE发送配置信息，以指示在发送端PC5 PDCP层和接收端PC5 PDCP对数据包禁用报头压缩/解压缩、加密/解密和完整性保护等功能。对于具体采用何种配置方式，本申请不作限制。
本申请还提供一种实施例，通过层2中继专用的物理信道PSRCH，区分发送端UE 采用层2中继协议栈的处理方式还是层3中继协议栈的处理方式，其实现原理和技术效果与上述各实施例类似，此处不再赘述。
图16为本申请提供的数据处理装置实施例一的结构示意图，本实施例的装置包括接收模块1401和处理模块1402，其中，接收模块1401用于接收发送端UE发送的数据包，数据包中包含指示信息；处理模块1402用于根据指示信息，确定采用层2中继数据的处理方式处理数据包。
其中，指示信息是数据包的分组数据汇聚协议协议数据单元PDCP PDU的服务数据单元SDU类型字段；SDU类型字段的取值为预设值。
其中，预设值为011或100或101或110或111。
其中，指示信息是数据包的媒体接入控制协议数据单元MAC PDU的逻辑信道标识LCID字段，LCID字段的取值为预设集合中的数值。
其中，预设集合为取值在00001-01010之间的部分数值的集合；
或者，预设集合为取值在01011-11011之间的数值的集合；
或者，预设集合为取值在01011-11011之间的部分数值的集合；
或者，预设集合为取值在00001-01010之间的部分数值和取值在01011-11011之间的部分数值的集合。
其中，处理模块1402具体用于控制PC5 PDCP层对数据包禁用报头解压缩功能和/或解密功能和/或完整性保护功能。
其中，接收模块，还用于接收基站的配置信息，配置信息指示接收端UE的PC5 PDCP禁用报头解压缩功能和/或解密功能和/或完整性保护功能。
本实施例的装置对应的可用于执行图4所示实施例的技术方案，其实现原理和技术效果类似，此处不再赘述。
图17为本申请提供的数据处理装置实施例二的结构示意图，如图17所示，本实施例的装置包括接收模块1501和处理模块1502，其中，接收模块1501用于接收发送端UE发送的数据包，数据包中包含指示信息；处理模块1502用于根据指示信息，确定建立用于层2中继的副链路无线承载SLRB。
其中，指示信息是数据包的媒体接入控制协议数据单元MAC PDU的逻辑信道标识LCID字段，LCID字段的取值为预设集合中的数值，预设集合中的LCID用于层2中继。
其中，预设集合为取值在00001-01010之间的部分数值的集合；
或者，预设集合为取值在01011-11011之间的数值的集合；
或者，预设集合为取值在01011-11011之间的部分数值的集合；
或者，预设集合为取值在00001-01010之间的部分数值和取值在01011-11011之间的部分数值的集合。
其中，接收模块1501还用于接收基站发送的配置信息，配置信息中包含预设集合。
本实施例的装置对应的可用于执行图9所示实施例的技术方案，其实现原理和技术效果类似，此处不再赘述。
图18为本申请提供的数据处理装置实施例三的结构示意图，本实施例的装置包括接收模块1601和处理模块1602，其中，接收模块1601用于接收基站发送的指示信息，其中，指示信息至少包含逻辑信道标识LCID；处理模块1602用于根据指示信息 建立用于层2中继的副链路无线承载SLRB。
其中，LCID的取值为预设集合中的数值，预设集合中的LCID用于层2中继；
其中，预设集合为取值在00001-01010之间的部分数值的集合；
或者，预设集合为取值在01011-11011之间的数值的集合；
或者，预设集合为取值在01011-11011之间的部分数值的集合；
或者，预设集合为取值在00001-01010之间的部分数值和取值在01011-11011之间的部分数值的集合。
其中，指示信息还包括用于建立用于层2中继的SLRB的媒体接入控制MAC层和/或无线链路控制RLC层和/或PC5适配层的配置参数。
本实施例的装置对应的可用于执行图15所示实施例的技术方案，其实现原理和技术效果类似，此处不再赘述。
图19为本申请提供的数据处理装置实施例四的结构示意图，本实施例的装置包括接收器1701和处理器1702，其中，接收器1701用于接收发送端UE发送的数据包，数据包中包含指示信息；处理器1702用于根据指示信息，确定采用层2中继数据的处理方式处理数据包。
本实施例的装置对应的可用于执行图4所示实施例的技术方案，其实现原理和技术效果类似，此处不再赘述。
图20为本申请提供的数据处理装置实施例五的结构示意图，如图20所示，本实施例的装置包括接收器1801和处理器1802，其中，接收器1801用于接收发送端UE发送的数据包，数据包中包含指示信息；处理器1802用于根据指示信息，确定建立用于层2中继的副链路无线承载SLRB。
本实施例的装置对应的可用于执行图9所示实施例的技术方案，其实现原理和技术效果类似，此处不再赘述。
图21为本申请提供的数据处理装置实施例六的结构示意图，本实施例的装置包括接收器1901和处理器1902，其中，接收器1901用于接收基站发送的指示信息，其中，指示信息至少包含逻辑信道标识LCID；处理器1902用于根据指示信息建立用于层2中继的副链路无线承载SLRB。
本实施例的装置对应的可用于执行图15所示实施例的技术方案，其实现原理和技术效果类似，此处不再赘述。

Claims (28)

  1. 一种数据处理方法，其特征在于，包括：
    接收端用户设备UE接收发送端UE发送的数据包，所述数据包中包含指示信息；
    所述接收端UE根据所述指示信息，确定采用层2中继数据的处理方式处理所述数据包。
  2. 根据权利要求1所述的方法，其特征在于，所述指示信息是所述数据包的分组数据汇聚协议协议数据单元PDCP PDU的服务数据单元SDU类型字段；所述SDU类型字段的取值为预设值。
  3. 根据权利要求2所述的方法，其特征在于，所述预设值为011或100或101或110或111。
  4. 根据权利要求1所述的方法，其特征在于，所述指示信息是所述数据包的媒体接入控制协议数据单元MAC PDU的逻辑信道标识LCID字段，所述LCID字段的取值为预设集合中的数值。
  5. 根据权利要求4所述的方法，其特征在于，
    所述预设集合为取值在00001-01010之间的部分数值的集合；
    或者，所述预设集合为取值在01011-11011之间的数值的集合；
    或者，所述预设集合为取值在01011-11011之间的部分数值的集合；
    或者，所述预设集合为取值在00001-01010之间的部分数值和取值在01011-11011之间的部分数值的集合。
  6. 根据权利要求4所述的方法，其特征在于，还包括：
    所述接收端UE接收基站发送的第一配置信息，所述第一配置信息包含所述预设集合。
  7. 根据权利要求1-6任一项所述的方法，其特征在于，所述接收端UE采用层2中继数据的处理方式处理所述数据包，包括：
    所述接收端UE的PC5PDCP层对所述数据包禁用报头解压缩功能和/或解密功能和/或完整性保护功能。
  8. 根据权利要求7所述的方法，其特征在于，所述接收端UE的PC5PDCP层对所述数据包禁用报头解压缩功能和/或解密功能和/或完整性保护功能之前，还包括：
    所述接收端UE接收基站发送的第二配置信息，所述第二配置信息指示所述接收端UE的PC5PDCP禁用报头解压缩功能和/或解密功能和/或完整性保护功能。
  9. 一种数据处理方法，其特征在于，包括：
    接收端用户设备UE接收发送端UE发送的数据包，所述数据包中包含指示信息；
    所述接收端UE根据所述指示信息，确定建立用于层2中继的副链路无线承载SLRB。
  10. 根据权利要求9所述的方法，其特征在于，所述指示信息是所述数据包的媒体接入控制协议数据单元MAC PDU的逻辑信道标识LCID字段，所述LCID字段的取值为预设集合中的数值，所述预设集合中的LCID用于层2中继。
  11. 根据权利要求10所述的方法，其特征在于，所述预设集合为取值在00001-01010之间的部分数值的集合；
    或者，所述预设集合为取值在01011-11011之间的数值的集合；
    或者，所述预设集合为取值在01011-11011之间的部分数值的集合；
    或者，所述预设集合为取值在00001-01010之间的部分数值和取值在01011-11011之间的部分数值的集合。
  12. 根据权利要求10或11所述的方法，其特征在于，还包括：
    所述接收端UE接收基站发送的配置信息，所述配置信息中包含所述预设集合。
  13. 一种数据处理方法，其特征在于，包括：
    用户设备UE接收基站发送的指示信息，其中，所述指示信息至少包含逻辑信道标识LCID；
    所述UE根据所述指示信息建立用于层2中继的副链路无线承载SLRB。
  14. 根据权利要求13所述的方法，其特征在于，所述LCID的取值为预设集合中的数值，所述预设集合中的LCID用于层2中继；
    其中，所述预设集合为取值在00001-01010之间的部分数值的集合；
    或者，所述预设集合为取值在01011-11011之间的数值的集合；
    或者，所述预设集合为取值在01011-11011之间的部分数值的集合；
    或者，所述预设集合为取值在00001-01010之间的部分数值和取值在01011-11011之间的部分数值的集合。
  15. 根据权利要求13所述的方法，其特征在于，所述指示信息还包括用于建立所述用于层2中继的SLRB的媒体接入控制MAC层和/或无线链路控制RLC层和/或PC5适配层的配置参数。
  16. 根据权利要求13所述的方法，其特征在于，所述UE是中继UE或远端UE。
  17. 一种数据处理装置，其特征在于，包括：
    接收模块，用于接收发送端UE发送的数据包，所述数据包中包含指示信息；
    处理模块，用于根据所述指示信息，确定采用层2中继数据的处理方式处理所述数据包。
  18. 根据权利要求17所述的装置，其特征在于，所述指示信息是所述数据包的分组数据汇聚协议协议数据单元PDCP PDU的服务数据单元SDU类型字段；所述SDU类型字段的取值为预设值；其中，所述预设值为011或100或101或110或111。
  19. 根据权利要求17所述的装置，其特征在于，所述指示信息是所述数据包的媒体接入控制协议数据单元MAC PDU的逻辑信道标识LCID字段，所述LCID字段的取值为预设集合中的数值；
    其中，所述预设集合为取值在00001-01010之间的部分数值的集合；
    或者，所述预设集合为取值在01011-11011之间的数值的集合；
    或者，所述预设集合为取值在01011-11011之间的部分数值的集合；
    或者，所述预设集合为取值在00001-01010之间的部分数值和取值在01011-11011之间的部分数值的集合。
  20. 根据权利要求19所述的装置，其特征在于，所述接收模块还用于接收基站发送的第一配置信息，所述第一配置信息包含所述预设集合。
  21. 根据权利要求17-19任一项所述的装置，其特征在于，所述处理模块具体用于控制PC5PDCP层对所述数据包禁用报头解压缩功能和/或解密功能和/或完整性保护功 能。
  22. 根据权利要求21所述的装置，其特征在于，所述接收模块，还用于接收基站发送的第二配置信息，所述配置信息指示所述接收端UE的PC5PDCP禁用报头解压缩功能和/或解密功能和/或完整性保护功能。
  23. 一种数据处理装置，其特征在于，包括：
    接收模块，用于接收发送端UE发送的数据包，所述数据包中包含指示信息；
    处理模块，用于根据所述指示信息，确定建立用于层2中继的副链路无线承载SLRB。
  24. 根据权利要求23所述的装置，其特征在于，所述指示信息是所述数据包的媒体接入控制协议数据单元MAC PDU的逻辑信道标识LCID字段，所述LCID字段的取值为预设集合中的数值，所述预设集合中的LCID用于层2中继；
    其中，所述预设集合为取值在00001-01010之间的部分数值的集合；
    或者，所述预设集合为取值在01011-11011之间的数值的集合；
    或者，所述预设集合为取值在01011-11011之间的部分数值的集合；
    或者，所述预设集合为取值在00001-01010之间的部分数值和取值在01011-11011之间的部分数值的集合。
  25. 根据权利要求24所述的装置，其特征在于，所述接收模块，还用于接收基站发送的配置信息，所述配置信息中包含所述预设集合。
  26. 一种数据处理装置，其特征在于，包括：
    接收模块，用于接收基站发送的指示信息，其中，所述指示信息至少包含逻辑信道标识LCID；
    处理模块，用于根据所述指示信息建立用于层2中继的副链路无线承载SLRB。
  27. 根据权利要求26所述的装置，其特征在于，所述LCID的取值为预设集合中的数值，所述预设集合中的LCID用于层2中继；
    其中，所述预设集合为取值在00001-01010之间的部分数值的集合；
    或者，所述预设集合为取值在01011-11011之间的数值的集合；
    或者，所述预设集合为取值在01011-11011之间的部分数值的集合；
    或者，所述预设集合为取值在00001-01010之间的部分数值和取值在01011-11011之间的部分数值的集合。
  28. 根据权利要求26所述的装置，其特征在于，所述指示信息还包括用于建立所述用于层2中继的SLRB的媒体接入控制MAC层和/或无线链路控制RLC层和/或PC5适配层的配置参数。
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WO2014087229A2 (en) * 2012-12-05 2014-06-12 Alcatel Lucent Method of device-to-device communication controlled by cellular mobile communication network
WO2015119483A1 (en) * 2014-02-10 2015-08-13 Lg Electronics Inc. Method and apparatus for indicating qos of d2d data in wireless communication system
CN106331978A (zh) * 2015-06-19 2017-01-11 电信科学技术研究院 一种层2链路标识的选择、通知方法及装置
WO2017014716A1 (en) * 2015-07-23 2017-01-26 Intel IP Corporation Layer 2 relay protocols and mobility relay method

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014087229A2 (en) * 2012-12-05 2014-06-12 Alcatel Lucent Method of device-to-device communication controlled by cellular mobile communication network
WO2015119483A1 (en) * 2014-02-10 2015-08-13 Lg Electronics Inc. Method and apparatus for indicating qos of d2d data in wireless communication system
CN106331978A (zh) * 2015-06-19 2017-01-11 电信科学技术研究院 一种层2链路标识的选择、通知方法及装置
WO2017014716A1 (en) * 2015-07-23 2017-01-26 Intel IP Corporation Layer 2 relay protocols and mobility relay method

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