WO2023041027A1 - 数据处理方法、装置及设备 - Google Patents

数据处理方法、装置及设备 Download PDF

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Publication number
WO2023041027A1
WO2023041027A1 PCT/CN2022/119272 CN2022119272W WO2023041027A1 WO 2023041027 A1 WO2023041027 A1 WO 2023041027A1 CN 2022119272 W CN2022119272 W CN 2022119272W WO 2023041027 A1 WO2023041027 A1 WO 2023041027A1
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layer
sdu
adaptation
pdu
indication information
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PCT/CN2022/119272
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English (en)
French (fr)
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赵亚利
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大唐移动通信设备有限公司
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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W28/00Network traffic management; Network resource management
    • H04W28/02Traffic management, e.g. flow control or congestion control
    • H04W28/06Optimizing the usage of the radio link, e.g. header compression, information sizing, discarding information
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W4/00Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/70Services for machine-to-machine communication [M2M] or machine type communication [MTC]
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W40/00Communication routing or communication path finding
    • H04W40/02Communication route or path selection, e.g. power-based or shortest path routing
    • H04W40/22Communication route or path selection, e.g. power-based or shortest path routing using selective relaying for reaching a BTS [Base Transceiver Station] or an access point
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W80/00Wireless network protocols or protocol adaptations to wireless operation
    • H04W80/02Data link layer protocols

Definitions

  • the present disclosure relates to the field of communication technologies, and in particular, to a data processing method, device, and equipment.
  • Relay can be a terminal with relay function.
  • relays There are two main types of relays:
  • U2N relay User equipment to network relay
  • the interface between the relay and the network uses the Uu interface
  • the interface between the relayed UE also known as the remote UE
  • the link between the Relay and the network may be called a BH (Backhaul link, backhaul link) for the remote UE.
  • BH Backhaul link, backhaul link
  • User equipment to user equipment relay (UE-to-UE Relay, U2U relay): For U2U relay, two relayed UEs can perform data transmission through the relay UE.
  • the protocol stack in the Relay scenario is different from the traditional communication protocol stack as follows:
  • PDCP Packet Data Convergence Protocol
  • RLC Radio Link Control
  • the PDCP layer is end-to-end like the traditional communication interface, but the RLC entity is hop by hop (hop by hop), wherein, hop by hop means that the RLC entity of each hop is an equivalent RLC entity.
  • the purpose of the present disclosure is to provide a data processing and discarding method, device and equipment to solve the problem of how to implement data packet discarding in a relaying scenario.
  • an embodiment of the present disclosure provides a data processing method, including:
  • the specific protocol layer of the remote terminal executes the service data unit based on at least one of the first indication information from the upper layer of the specific protocol layer of the remote terminal, the second indication information from the previous hop node, and the timer SDU and/or protocol data unit PDU discard processing, wherein the specific protocol layer is an adaptation layer or a radio link control RLC layer.
  • the method also includes:
  • the specific protocol layer is an adaptation layer
  • the specific protocol layer of the remote terminal executes the service data unit SDU and/or protocol data unit based on the first instruction information from the upper layer of the specific protocol layer of the remote terminal PDU discard processing, including:
  • the adaptation layer receives The first indication information sent by the first PDCP entity, where the first PDCP entity is a PDCP entity in the PDCP layer corresponding to the first PDCP SDU;
  • the adaptation layer determines the first adaptation layer SDU to be discarded according to the first indication information
  • the adaptation layer discards the first adaptation layer SDU An adaptation layer SDU and/or a PDU corresponding to the first adaptation layer SDU.
  • the method further includes:
  • the adaptation layer does not perform SDU discarding
  • a message indicating to perform the SDU and/or PDU discarding process of the specific protocol layer is sent to the next hop node Instructions.
  • the specific protocol layer is the RLC layer
  • the specific protocol layer of the remote terminal executes the service data unit SDU and/or protocol data unit PDU based on the first instruction information from the upper layer of the specific protocol layer of the remote terminal Disposal processing, including:
  • the adaptation layer receives the second PDCP entity
  • the third indication information sent, the second PDCP entity is a PDCP entity in the PDCP layer corresponding to the second PDCP SDU, and the third indication information is used to instruct the adaptation layer to discard the PDCP PDU;
  • the adaptation layer determines the second adaptation layer SDU to be discarded according to the third indication information
  • the RLC layer receives the first indication information sent by the adaptation layer
  • the RLC layer determines the first RLC layer SDU to be discarded according to the first indication information
  • the RLC layer discards the first RLC layer SDU And/or the PDU corresponding to the first RLC layer SDU.
  • the method further includes:
  • the adaptation layer discards the second adaptation layer SDU and/or Or a PDU corresponding to the second adaptation layer SDU.
  • the method further includes:
  • the RLC layer does not perform SDU discarding
  • the second indication information is sent to the next hop node.
  • the specific protocol layer of the remote terminal performs service data unit SDU and/or protocol data unit PDU discarding processing based on the second indication information from the previous hop node, including:
  • the specific protocol layer determines the SDU and/or PDU of the specific protocol layer to be discarded according to the second indication information
  • the specific protocol layer When the specific protocol layer receives the SDU and/or PDU of the specific protocol layer sent by the previous hop node, the specific protocol layer discards the SDU and/or PDU.
  • the second indication information includes at least one of the following:
  • the number of the PDU to be discarded is the number of the PDU to be discarded.
  • receiving the second indication information sent by the previous hop node of the remote terminal includes:
  • receiving the second indication information sent by the previous hop node of the remote terminal includes:
  • the sending condition is: the last hop node of the remote terminal determines the specific protocol to be discarded
  • the SDU and/or PDU of the specific protocol layer, and the PDU corresponding to the SDU of the specific protocol layer has been transmitted to the lower layer of the specific protocol layer.
  • the specific protocol layer of the remote terminal performs service data unit SDU and/or protocol data unit PDU discard processing based on a timer, including:
  • the specific protocol layer is an adaptation layer
  • the third adaptation layer SDU sent by the PDCP layer is received, start the discard timer of the adaptation layer
  • the adaptation layer discards the third adaptation layer SDU and/or the PDU corresponding to the third adaptation layer SDU.
  • the method further includes:
  • the adaptation layer does not perform SDU discarding;
  • the next layer of the adaptation layer Sending fourth indication information, where the fourth indication information is used to instruct the lower layer of the adaptation layer to discard the SDU of this layer and/or the PDU corresponding to the SDU of this layer.
  • the length of the discard timer of the adaptation layer is determined based on the end-to-end bearer or the delay requirement of the RLC channel.
  • the specific protocol layer of the remote terminal performs service data unit SDU and/or protocol data unit PDU discard processing based on a timer, including:
  • the discard timer of the RLC layer is started;
  • the RLC layer Discarding the second RLC layer SDU and/or the PDU corresponding to the second RLC layer SDU.
  • the method further includes:
  • the RLC layer When the discarding timer of the RLC layer expires, and the PDU corresponding to the second RLC layer SDU is transmitted to the next layer of the RLC layer, the RLC layer does not perform SDU discarding; or,
  • the discarding timer of the RLC layer expires and the PDU corresponding to the second RLC layer SDU is transmitted to a layer lower than the RLC layer
  • the second indication information is sent to the next-hop node.
  • an embodiment of the present disclosure also provides a data processing method, including:
  • the specific protocol layer of the relay terminal executes the service data unit based on at least one of the first indication information from the upper layer of the specific protocol layer of the relay terminal, the second indication information from the previous hop node, and the timer SDU and/or protocol data unit PDU discard processing, the specific protocol layer is an adaptation layer or a radio link control RLC layer.
  • the method also includes:
  • the second indication information sent by the previous hop node of the relay terminal is received.
  • the specific protocol layer of the relay terminal performs service data unit SDU and/or protocol data unit PDU discarding processing based on the first indication information from the upper layer of the specific protocol layer of the relay terminal, including:
  • the RLC layer determines the third RLC layer SDU to be discarded according to the first indication information
  • the RLC layer discards the third RLC layer SDU And/or the PDU corresponding to the third RLC layer SDU.
  • the method further includes:
  • the RLC layer does not perform SDU discarding
  • the PDU corresponding to the third RLC layer SDU is transmitted to the next layer of the RLC layer, sending to the next hop node to indicate the execution of the SDU and/or PDU discarding process of the specific protocol layer Instructions.
  • the specific protocol layer of the relay terminal performs service data unit SDU and/or protocol data unit PDU discarding processing based on the second indication information from the previous hop node, including:
  • the specific protocol layer determines the SDU and/or PDU of the specific protocol layer to be discarded according to the second indication information
  • the specific protocol layer When the specific protocol layer receives the SDU and/or PDU of the specific protocol layer sent by the previous hop node of the relay terminal, the specific protocol layer discards the SDU and/or PDU .
  • the second indication information includes at least one of the following:
  • the number of the PDU to be discarded is the number of the PDU to be discarded.
  • receiving the second indication information sent by the previous hop node of the relay terminal includes:
  • receiving the second indication information sent by the previous hop node of the relay terminal includes:
  • the sending condition is: the last hop node of the relay terminal determines the specific protocol to be discarded
  • the SDU and/or PDU of the specific protocol layer, and the PDU corresponding to the SDU of the specific protocol layer has been transmitted to the lower layer of the specific protocol layer.
  • the specific protocol layer of the relay terminal performs service data unit SDU and/or protocol data unit PDU discard processing based on a timer, including:
  • the specific protocol layer is an adaptation layer
  • the fourth adaptation layer SDU sent by the previous hop node of the relay terminal is received, start the discard timer of the adaptation layer
  • the adaptation layer discards the fourth adaptation layer SDU and/or the PDU corresponding to the fourth adaptation layer SDU.
  • the method further includes:
  • the adaptation layer does not perform SDU discarding;
  • the discarding timer of the adaptation layer expires, and the PDU corresponding to the fourth adaptation layer SDU is transmitted to the next layer of the adaptation layer, to the next layer of the adaptation layer Sending fifth indication information, where the fifth indication information is used to instruct the lower layer of the adaptation layer to discard the SDU of this layer and/or the PDU corresponding to the SDU of this layer.
  • the specific protocol layer of the relay terminal performs service data unit SDU and/or protocol data unit PDU discard processing based on a timer, including:
  • the RLC layer Discarding the fourth RLC layer SDU and/or the PDU corresponding to the fourth RLC layer SDU.
  • the method further includes:
  • the RLC layer When the discarding timer of the RLC layer expires, and the PDU corresponding to the fourth RLC layer SDU is transmitted to the next layer of the RLC layer, the RLC layer does not perform SDU discarding; or,
  • the discarding timer of the RLC layer expires and the PDU corresponding to the fourth RLC layer SDU is transmitted to a lower layer of the RLC layer, the second indication information is sent to the next-hop node.
  • an embodiment of the present disclosure provides a data processing method, including:
  • the specific protocol layer of the network side device executes the service data unit based on at least one of the first indication information from the upper layer of the specific protocol layer of the network side device, the second indication information from the previous hop node, and the timer SDU and/or protocol data unit PDU discard processing, wherein the specific protocol layer is an adaptation layer or a radio link control RLC layer.
  • the method also includes:
  • the specific protocol layer is an adaptation layer
  • the specific protocol layer of the network side device executes the service data unit SDU and/or protocol data unit based on the first instruction information from the upper layer of the specific protocol layer of the network side device PDU discard processing, including:
  • the adaptation layer receives The first indication information sent by the first PDCP entity, where the first PDCP entity is a PDCP entity in the PDCP layer corresponding to the first PDCP SDU;
  • the adaptation layer determines the first adaptation layer SDU to be discarded according to the first indication information
  • the adaptation layer discards the first adaptation layer SDU An adaptation layer SDU and/or a PDU corresponding to the first adaptation layer SDU.
  • the method further includes:
  • the adaptation layer does not perform SDU discarding
  • a message indicating to perform the SDU and/or PDU discarding process of the specific protocol layer is sent to the next hop node Instructions.
  • the specific protocol layer is the RLC layer
  • the specific protocol layer of the network side device executes the service data unit SDU and/or the protocol data unit PDU based on the first instruction information from the upper layer of the specific protocol layer of the network side device Disposal processing, including:
  • the adaptation layer receives the second PDCP entity
  • the third indication information sent, the second PDCP entity is a PDCP entity in the PDCP layer corresponding to the second PDCP SDU, and the third indication information is used to instruct the adaptation layer to discard the PDCP PDU;
  • the adaptation layer determines the second adaptation layer SDU to be discarded according to the third indication information
  • the RLC layer receives the first indication information sent by the adaptation layer
  • the RLC layer determines the first RLC layer SDU to be discarded according to the first indication information
  • the RLC layer discards the first RLC layer SDU And/or the PDU corresponding to the first RLC layer SDU.
  • the method further includes:
  • the adaptation layer discards the second adaptation layer SDU and/or Or a PDU corresponding to the second adaptation layer SDU.
  • the method further includes:
  • the RLC layer does not perform SDU discarding
  • the second indication information is sent to the next hop node.
  • the specific protocol layer of the network side device performs service data unit SDU and/or protocol data unit PDU discarding processing based on the second indication information from the previous hop node, including:
  • the specific protocol layer determines the SDU and/or PDU of the specific protocol layer to be discarded according to the second indication information
  • the specific protocol layer When the specific protocol layer receives the SDU and/or PDU of the specific protocol layer sent by the previous hop node, the specific protocol layer discards the SDU and/or PDU.
  • the second indication information includes at least one of the following:
  • the number of the PDU to be discarded is the number of the PDU to be discarded.
  • receiving the second indication information sent by the previous hop node of the network side device includes:
  • receiving the second indication information sent by the previous hop node of the network side device includes:
  • the sending condition is: the last hop node of the network side device determines the specific protocol to be discarded The SDU and/or PDU of the specific protocol layer, and the PDU corresponding to the SDU of the specific protocol layer has been transmitted to the lower layer of the specific protocol layer.
  • the specific protocol layer of the network side device performs the service data unit SDU and/or protocol data unit PDU discard processing based on the timer, including:
  • the specific protocol layer is an adaptation layer
  • the third adaptation layer SDU sent by the PDCP layer is received, start the discard timer of the adaptation layer
  • the adaptation layer discards the third adaptation layer SDU and/or the PDU corresponding to the third adaptation layer SDU.
  • the method further includes:
  • the adaptation layer does not perform SDU discarding;
  • the next layer of the adaptation layer Sending fourth indication information, where the fourth indication information is used to instruct the lower layer of the adaptation layer to discard the SDU of this layer and/or the PDU corresponding to the SDU of this layer.
  • the length of the discard timer of the adaptation layer is determined based on the end-to-end bearer or the delay requirement of the RLC channel.
  • the specific protocol layer of the network side device performs the service data unit SDU and/or protocol data unit PDU discard processing based on the timer, including:
  • the discard timer of the RLC layer is started;
  • the RLC layer Discarding the second RLC layer SDU and/or the PDU corresponding to the second RLC layer SDU.
  • the method further includes:
  • the RLC layer When the discarding timer of the RLC layer expires, and the PDU corresponding to the second RLC layer SDU is transmitted to the next layer of the RLC layer, the RLC layer does not perform SDU discarding; or,
  • the discarding timer of the RLC layer expires and the PDU corresponding to the second RLC layer SDU is transmitted to a layer lower than the RLC layer
  • the second indication information is sent to the next-hop node.
  • an embodiment of the present disclosure also provides a remote terminal, including: a memory, a transceiver, and a processor: a memory for storing computer programs; a transceiver for sending and receiving data under the control of the processor a processor, configured to read the computer program in the memory and execute the steps of the data processing method as described above.
  • an embodiment of the present disclosure further provides a data processing device, including:
  • the first discard processing unit is configured to make the specific protocol layer of the remote terminal based on the first indication information from the upper layer of the specific protocol layer of the remote terminal, the second indication information from the previous hop node, and the timer At least one of them performs service data unit SDU and/or protocol data unit PDU discard processing, wherein the specific protocol layer is an adaptation layer or a radio link control RLC layer.
  • an embodiment of the present disclosure further provides a computer-readable storage medium on which a computer program is stored, and when the computer program is executed by a processor, the steps of the data processing method as described above are implemented.
  • an embodiment of the present disclosure also provides a relay terminal, including: a memory, a transceiver, and a processor: a memory for storing computer programs; a transceiver for sending and receiving under the control of the processor data; a processor configured to read the computer program in the memory and execute the steps of the data processing method as described above.
  • an embodiment of the present disclosure also provides a data processing device, including:
  • the second discard processing unit is configured to make the specific protocol layer of the relay terminal based on the first indication information from the upper layer of the specific protocol layer of the relay terminal, the second indication information from the previous hop node, and the timer At least one of them performs service data unit SDU and/or protocol data unit PDU discard processing, and the specific protocol layer is an adaptation layer or a radio link control RLC layer.
  • an embodiment of the present disclosure also provides a network side device, including: a memory, a transceiver, and a processor: a memory, used to store computer programs; and a transceiver, used to send and receive data under the control of the processor a processor, configured to read the computer program in the memory and execute the steps of the data processing method as described above.
  • an embodiment of the present disclosure further provides a data processing device, including:
  • the third discard processing unit is configured to make the specific protocol layer of the network side device based on the first indication information from the upper layer of the specific protocol layer of the network side device, the second indication information from the previous hop node, and the timer At least one of them performs service data unit SDU and/or protocol data unit PDU discard processing, wherein the specific protocol layer is an adaptation layer or a radio link control RLC layer.
  • an embodiment of the present disclosure further provides a processor-readable storage medium, the processor-readable storage medium stores a computer program, and the computer program is used to enable the processor to execute the above-mentioned data The steps of the processing method.
  • the specific protocol layer of the specific device is based on the first indication information of the upper layer of the specific protocol layer of the specific device, the second indication information from the previous hop node, and the timer At least one of performing service data unit SDU and/or protocol data unit PDU discard processing, wherein the specific device is a network side device or a remote terminal, and the specific protocol layer is an adaptation layer or a radio link control RLC layer.
  • Figure 1 is a schematic diagram of the user plane protocol stack in the U2N relay scenario
  • FIG. 2 is one of the schematic flow diagrams of the data processing method of the embodiment of the present disclosure
  • FIG. 3 is the second schematic flow diagram of the data processing method of the embodiment of the present disclosure.
  • FIG. 4 is the third schematic flow diagram of the data processing method of the embodiment of the present disclosure.
  • FIG. 5 is a fourth schematic flow diagram of a data processing method according to an embodiment of the present disclosure.
  • FIG. 6 is a fifth schematic flow diagram of a data processing method according to an embodiment of the present disclosure.
  • FIG. 7 is a structural block diagram of a specific device according to an embodiment of the present disclosure.
  • FIG. 8 is a schematic block diagram of a specific device of an embodiment of the present disclosure.
  • FIG. 9 is a structural block diagram of a relay terminal according to an embodiment of the present disclosure.
  • FIG. 10 is a schematic diagram of modules of a relay terminal according to an embodiment of the present disclosure.
  • Direct communication refers to a method in which adjacent terminals can perform data transmission through a direct communication link (also called Sidelink or PC5) within a short distance.
  • a direct communication link also called Sidelink or PC5
  • the wireless interface corresponding to the Sidelink link is called a direct communication interface (also called a Sidelink interface or a PC5 interface).
  • Relay can be a terminal with relay function.
  • relays There are two main types of relays:
  • U2N relay For U2N relay, the interface between the relay and the network uses the Uu interface, and the interface between the relayed UE (also known as the remote UE) uses a direct communication interface.
  • the link between the relay and the network can be called BH for the remote UE.
  • Figure 1 shows the user plane protocol stack in the U2N relay scenario.
  • UE-to-UE Relay For U2U relay, two relayed UEs can transmit data through the relay UE.
  • PDCP is end-to-end.
  • the two "ends" in the end-to-end refer to the remote terminal and the network side device; for the U2U relay scenario, the two "ends" in the end-to-end refer to the two target communication through the relay communication Peer.
  • RLC is hop by hop.
  • hop by hop means that the RLC entity of each hop is an equivalent RLC entity.
  • ADAPT adaptive layer, adaptation layer
  • the protocol stack in the Relay scenario is different from the traditional communication protocol stack as follows:
  • the PDCP layer is end-to-end like the traditional communication interface, but the RLC entity is hop by hop.
  • an embodiment of the present disclosure provides a data processing method and device, wherein the method and the device are conceived based on the same application, and since the method and the device have similar problem-solving principles, the implementation of the device and the method can refer to each other , the repetitions will not be repeated.
  • Step 201 The specific protocol layer of the specific device executes the service data based on at least one of the first indication information from the upper layer of the specific protocol layer of the specific device, the second indication information from the previous hop node, and the timer Unit SDU and/or protocol data unit PDU discard processing, wherein the specific device is a network side device or a remote terminal, and the specific protocol layer is an adaptation layer or a radio link control RLC layer.
  • the specific protocol layer of the specific device executes a Service Data Unit (Service Data Unit, SDU) and/or a Protocol Data Unit (Protocol Data Unit, In the case of PDU) discarding processing, if the specific protocol layer is an adaptation layer, then the upper layer is the PDCP layer; if the specific protocol layer is the RLC layer, then the upper layer is the adaptation layer.
  • SDU Service Data Unit
  • PDU Protocol Data Unit
  • This scenario corresponds to inter-device inter-layer interaction.
  • the last hop node is the last hop node of a specific device.
  • the last hop node is a relay terminal.
  • the last hop node is a relay terminal.
  • both the first indication information and the second indication information are used to instruct a specific protocol layer of the specific device to perform SDU and/or PDU discard processing of the specific protocol layer.
  • the specific protocol layer of the specific device is based on the first indication information of the upper layer of the specific protocol layer of the specific device, the second indication information from the previous hop node, and the timer At least one item performs service data unit SDU and/or protocol data unit PDU discard processing, wherein the specific device is a network side device or a remote terminal, and the specific protocol layer is an adaptation layer or a radio link control RLC layer,
  • the specific device is a network side device or a remote terminal
  • the specific protocol layer is an adaptation layer or a radio link control RLC layer
  • the method in the embodiment of the present disclosure may also include:
  • the specific protocol layer of a specific device performs SDU and/or PDU discard processing based on the first indication information from the upper layer of the specific protocol layer of the specific device, then before that, the following steps need to be performed , that is, receiving first indication information sent by a layer above the specific protocol layer, so that the specific protocol layer of the specific device can perform SDU and/or PDU discard processing based on the first indication information.
  • the specific protocol layer of a specific device performs SDU and/or PDU discard processing based on the second indication information from the previous hop node, then before that, the following steps need to be performed, that is, receive the The second indication information, so that the specific protocol layer of the specific device can perform SDU and/or PDU discard processing based on the second indication information.
  • the specific protocol layer of the specific device is based on the previous protocol layer from the specific protocol layer of the specific device
  • the first instruction information of the layer performs service data unit SDU and/or protocol data unit PDU discard processing, including:
  • the adaptation layer receives The first indication information sent by the first PDCP entity, where the first PDCP entity is a PDCP entity in the PDCP layer corresponding to the first PDCP SDU;
  • the specific device may be a network-side device or a remote terminal.
  • the specific protocol layer of the specific device is an adaptation layer
  • the upper layer of the specific protocol layer of the specific device is PDCP layer.
  • the discard timer corresponding to the first PDCP SDU expires, it means that the first PDCP entity, that is, the PDCP entity in the PDCP layer corresponding to the first PDCP SDU, needs to discard the first PDCP SDU and related PDCP Data PDUs.
  • the first PDCP entity sends the first indication information to the corresponding adaptation layer, that is, the adaptation The layer receives the first indication information sent by the first PDCP entity.
  • the first indication information is used to instruct the adaptation layer to perform SDU and/or PDU discard processing of the adaptation layer.
  • the adaptation layer determines the first adaptation layer SDU to be discarded according to the first indication information
  • the adaptation The layer discards the first adaptation layer SDU and/or the PDU corresponding to the first adaptation layer SDU.
  • the next layer of the adaptation layer may be an RLC layer.
  • Another option is, when the PDU corresponding to the adaptation layer SDU is transmitted to the next layer of the adaptation layer, the adaptation layer does not perform SDU discarding;
  • the adaptation layer does not perform SDU discarding, that is, the adaptation layer does not perform any processing.
  • the second indication information is sent to the next-hop node.
  • the specific device sends second indication information to its next-hop node, which is used to instruct the next-hop node to perform SDU and/or PDU discard processing.
  • Embodiment 1 The adaptation layer of the remote terminal (Remote UE) performs SDU and/or PDU discarding based on the first indication information from the PDCP layer
  • Step A1 The Remote UE receives the PDCP SDU from the upper layer, and starts the corresponding discard timer (discardTimer);
  • Step A2 DiscardTimer timeout processing corresponding to PDCP SDU
  • the PDCP sending entity corresponding to the PDCP SDU needs to discard the PDCP SDU and the related PDCP Data PDU. If the PDCP Data PDU related to the PDCP SDU has been delivered to the adaptation layer, the PDCP sending entity sends first indication information to its corresponding adaptation layer to instruct the adaptation layer to discard the PDCP Data PDU.
  • Step A3 The adaptation layer discards packets according to the first indication information from the PDCP layer
  • the adaptation layer receives the first indication information, and determines the adaptation layer SDU that needs to be discarded according to the first indication information; then, one of the following operations is performed:
  • the adaptation layer discards the adaptation layer SDU and/or the PDU corresponding to the adaptation layer SDU.
  • the adaptation layer does not perform any processing.
  • the specific protocol layer of the specific device is based on the previous protocol layer from the specific protocol layer of the specific device
  • the first instruction information of the layer performs service data unit SDU and/or protocol data unit PDU discard processing, including:
  • the adaptation layer receives the second PDCP entity
  • the third indication information sent, the second PDCP entity is a PDCP entity in the PDCP layer corresponding to the second PDCP SDU, and the third indication information is used to instruct the adaptation layer to discard the PDCP PDU;
  • the specific device can be a network-side device or a remote terminal, if the specific protocol layer of the specific device is an adaptation layer, the upper layer of the specific protocol layer of the specific device The layer is the PDCP layer.
  • the discard timer corresponding to the second PDCP SDU expires, it means that the second PDCP entity, that is, the PDCP entity in the PDCP layer corresponding to the second PDCP SDU, needs to discard the second PDCP SDU and related PDCP data (Data) PDUs.
  • the second PDCP entity sends the first indication information to the corresponding adaptation layer, that is, the adaptation The layer receives third indication information sent by the second PDCP entity.
  • the third indication information is used to instruct the adaptation layer to discard the PDCP Data PDU related to the second PDCP SDU.
  • the adaptation layer determines the second adaptation layer SDU to be discarded according to the third indication information
  • the RLC layer receives the first indication information sent by the adaptation layer
  • the RLC layer determines the first RLC layer SDU to be discarded according to the first indication information
  • the RLC layer discards the first RLC A layer SDU and/or a PDU corresponding to the first RLC layer SDU.
  • the layer below the RLC layer may be a media access control (Media Access Control, MAC) layer.
  • Media Access Control Media Access Control
  • the method in this embodiment of the present disclosure may further include:
  • the adaptation layer discards the second adaptation layer SDU and/or Or a PDU corresponding to the second adaptation layer SDU.
  • the second adaptation layer SDU to be discarded or the PDU corresponding to the second adaptation layer SDU is not transmitted to the RLC layer, that is, the second adaptation layer SDU to be discarded SDU or the PDU corresponding to the second adaptation layer SDU is transmitted to the adaptation layer, then the adaptation layer discards the second adaptation layer SDU to be discarded according to the third indication information and/or The PDU corresponding to the second adaptation layer SDU.
  • the method in this embodiment of the present disclosure further includes:
  • the RLC layer does not perform SDU discarding
  • the RLC layer does not perform SDU discarding, that is, the RLC layer does not perform any processing.
  • the specific device sends second indication information to its next-hop node, which is used to instruct the next-hop node to perform SDU and/or PDU discard processing.
  • Embodiment 2 The RLC layer of the Remote UE performs SDU and/or PDU discarding based on the first indication information from the adaptation layer
  • Step B1 The Remote UE receives the PDCP SDU from the upper layer, and starts the corresponding discardTimer;
  • Step B2 DiscardTimer timeout processing corresponding to PDCP SDU
  • the PDCP sending entity corresponding to the PDCP SDU needs to discard the PDCP SDU and the related PDCP Data PDU. If the PDCP Data PDU related to the PDCP SDU has been delivered to the adaptation layer, the PDCP sending entity sends third indication information to its corresponding adaptation layer to instruct the adaptation layer to discard the PDCP Data PDU.
  • Step B3 The adaptation layer discards packets according to the third indication information from the PDCP layer
  • the adaptation layer receives the third indication information, and determines the adaptation layer SDU that needs to be discarded according to the third indication information; after that, one of the following operations is performed:
  • the adaptation layer discards the adaptation layer SDU and/or the PDU corresponding to the adaptation layer SDU.
  • the adaptation layer sends first indication information to the RLC layer.
  • Step B4 The RLC layer discards packets according to the first indication information from the adaptation layer
  • the RLC layer receives the first indication information, and determines the RLC layer SDU that needs to be discarded according to the first indication information; after that, one of the following operations is performed:
  • the RLC layer discards the RLC layer SDU and/or the PDU corresponding to the RLC layer SDU;
  • the RLC layer does not perform any processing.
  • the specific protocol layer of a specific device performs service data unit SDU and/or protocol data unit PDU discard processing based on the second indication information from the previous hop node ,include:
  • the specific protocol layer determines the SDU and/or PDU of the specific protocol layer to be discarded according to the second indication information
  • the adaptation layer determines the adaptation layer SDU and/or PDU to be discarded (need to be discarded) according to the second indication information from the previous hop node of the specific device.
  • the specific protocol layer When the specific protocol layer receives the SDU and/or PDU of the specific protocol layer sent by the previous hop node, the specific protocol layer discards the SDU and/or PDU.
  • the specific protocol layer receives the SDU and/or PDU that needs to be discarded from the previous hop node, and directly discards the SDU and/or PDU.
  • the second indication information includes at least one of the following:
  • the number of the PDU to be discarded is the number of the PDU to be discarded.
  • receiving the second indication information sent by the previous hop node of the specific device includes:
  • MAC CE Medium Access Control Element
  • receiving the second indication information sent by the previous hop node of the specific device includes:
  • the sending condition is: the last hop node of the specific device determines that the specific protocol layer to be discarded SDU and/or PDU, and the PDU corresponding to the SDU of the specific protocol layer has been transmitted to the lower layer of the specific protocol layer.
  • the previous hop node of the specific device when the previous hop node of the specific device satisfies the foregoing sending condition, the previous hop node sends the second indication information to the specific device.
  • the specific protocol layer of the specific device performs service data unit SDU and/or protocol data unit PDU discard processing based on the timer, including:
  • the specific protocol layer is an adaptation layer
  • the third adaptation layer SDU sent by the PDCP layer is received, start the discard timer of the adaptation layer
  • a discard timer is introduced in the adaptation layer, and the discard timer is started when the adaptation layer receives the third adaptation layer SDU sent by the PDCP layer.
  • the discard timer at the adaptation layer expires, and the third adaptation layer SDU or the PDU corresponding to the third adaptation layer SDU is not transmitted to the next adaptation layer
  • the adaptation layer discards the third adaptation layer SDU and/or the PDU corresponding to the third adaptation layer SDU.
  • the adaptation The layer does not perform SDU discarding
  • the adaptation layer does not perform SDU discarding, that is, the adaptation layer does not perform any processing.
  • the The lower layer of the adaptation layer sends fourth indication information, where the fourth indication information is used to instruct the lower layer of the adaptation layer to discard the SDU of this layer and/or the PDU corresponding to the SDU of this layer.
  • the next layer of the adaptation layer may be an RLC layer.
  • the discard timer of the adaptation layer expires and the PDU corresponding to the SDU of the third adaptation layer is transmitted to the RLC layer, send fourth indication information to the RLC layer, the fourth indication information Used to instruct the RLC layer to discard the RLC SDU and/or the PDU corresponding to the RLC SDU.
  • the length of the discard timer of the adaptation layer is determined based on the end-to-end bearer or the delay requirement of the RLC channel.
  • Embodiment 3 The adaptation layer of the Remote UE performs SDU and/or PDU discarding based on a timer
  • Step F1 Introduce a discardTimer of the adaptation layer in the adaptation layer, and maintain the timer based on each adaptation layer SDU.
  • the adaptation layer of the Remote UE receives the adaptation layer SDU from the upper layer (PDCP layer), and starts the corresponding discardTimer.
  • the discardTimer length is related to the data packet delay requirement.
  • Step F2 The discardTimer corresponding to the adaptation layer SDU is timed out
  • the adaptation layer needs to discard the adaptation layer SDU and related adaptation layer PDUs.
  • adaptation layer PDU related to the adaptation layer SDU has been delivered to the RLC layer. If the adaptation layer PDU related to the adaptation layer SDU has been delivered to the RLC layer, one of the following operations can also be performed:
  • the adaptation layer of the Remote UE sends the fourth indication information to the RLC layer of the Remote UE, for instructing the RCL layer to discard the adaptation layer PDU;
  • the adaptation layer of the Remote UE sends the second indication information to the Relay UE (next hop node), which is used to indicate that after the adaptation layer of the Relay UE receives the second indication information from the Remote UE, determine the need according to the second indication information Discarded Adaptation Layer SDUs and/or PDUs.
  • the specific protocol layer of the specific device performs the discarding process of the service data unit SDU and/or protocol data unit PDU based on a timer, including:
  • the discard timer of the RLC layer is started;
  • a discard timer is introduced in the RLC layer, and the discard timer is started when the RLC layer receives the second RLC layer SDU sent by the adaptation layer.
  • the RLC layer discards the second RLC layer SDU and/or the PDU corresponding to the second RLC layer SDU.
  • Another option is that when the discard timer of the RLC layer expires and the PDU corresponding to the second RLC layer SDU is transmitted to the next layer of the RLC layer, the RLC layer does not execute the SDU throw away;
  • the RLC layer does not perform SDU discarding, that is, the RLC layer does not perform any processing.
  • the next hop node Send second indication information when the discarding timer of the RLC layer expires, and the PDU corresponding to the second RLC layer SDU is transmitted to the next layer of the RLC layer, the next hop node Send second indication information.
  • Embodiment 4 The RLC layer of the Remote UE performs SDU and/or PDU discarding based on a timer
  • Step G1 Introduce a discardTimer of the adaptation layer in the RLC layer, and maintain the timer (timer) based on each RLC layer SDU.
  • the RLC layer of the Remote UE receives the SDU from the upper layer (PDCP layer or adaptation layer), and starts the corresponding discardTimer.
  • the discardTimer length is related to the data packet delay requirement.
  • Step G2 The discardTimer timeout processing corresponding to the RLC layer SDU
  • the RLC layer needs to discard the RLC layer SDU and the related RLC layer PDU.
  • the RLC layer of the Remote UE sends second indication information to the Relay UE (next hop node), the second indication information is used to indicate that the Relay UE receives the second indication information from the Remote UE, and determines the information that needs to be discarded according to the second indication information RLC layer SDU and/or PDU.
  • the specific protocol layer of the specific device is based on the first indication information of the upper layer of the specific protocol layer of the specific device, the second indication information from the previous hop node, and the timer At least one item performs service data unit SDU and/or protocol data unit PDU discard processing, wherein the specific device is a network side device or a remote terminal, and the specific protocol layer is an adaptation layer or a radio link control RLC layer,
  • the specific device is a network side device or a remote terminal
  • the specific protocol layer is an adaptation layer or a radio link control RLC layer
  • FIG. 3 it is a schematic flowchart of a data processing method provided by an embodiment of the present disclosure.
  • the method is applied to a relay terminal, and may specifically include:
  • Step 301 The specific protocol layer of the relay terminal is executed based on at least one of the first indication information from the upper layer of the specific protocol layer of the relay terminal, the second indication information from the previous hop node, and the timer Service data unit SDU and/or protocol data unit PDU discard processing, the specific protocol layer is an adaptation layer or a radio link control RLC layer.
  • the specific protocol layer of the relay terminal Relay UE performs SDU and/or PDU discard processing based on the first indication information from the upper layer of the specific protocol layer of the relay terminal
  • the specific protocol layer is the RLC layer , that is, the upper layer is the adaptation layer. This scenario corresponds to inter-device inter-layer interaction.
  • the last hop node is the last hop node of the relay terminal.
  • the last hop node is the remote terminal.
  • the last hop node is the network side device.
  • the last hop node is the remote terminal.
  • both the first indication information and the second indication information are used to instruct a specific protocol layer of the relay terminal to perform SDU and/or PDU discarding processing of the layer.
  • the specific protocol layer of the relay terminal is based on the first indication information from the upper layer of the specific protocol layer of the relay terminal, the second indication information from the previous hop node, and the timing At least one of the processors performs service data unit SDU and/or protocol data unit PDU discard processing, and the specific protocol layer is an adaptation layer or a radio link control RLC layer, so that an adaptation layer is introduced in a relay scenario After multi-hop and multi-hop, it can ensure that SDU discarding can be carried out normally, avoid the congestion problem caused by unnecessary data transmission, better ensure the transmission of effective data, and improve the performance of the entire relay system.
  • the method in the embodiment of the present disclosure may also include:
  • the second indication information sent by the previous hop node of the relay terminal is received.
  • the specific protocol layer of the relay terminal performs SDU and/or PDU discard processing based on the second indication information from the previous hop node of the relay terminal, the following steps need to be performed before that, that is, receiving The second indication information sent by the previous hop node of the relay terminal, so that the specific protocol layer of the relay terminal can perform SDU and/or PDU discard processing based on the second indication information.
  • the specific protocol layer of the relay terminal executes the service data unit SDU and/or based on the first indication information from the upper layer of the specific protocol layer of the specific device Or protocol data unit PDU discard processing, including:
  • the RLC layer determines the third RLC layer SDU to be discarded according to the first indication information
  • the sending condition that triggers the adaptation layer to send the first indication information may be: the discard timer of the adaptation layer expires, and the corresponding adaptation layer SDU that needs to be discarded is transmitted to the RLC layer. It should be noted that the start of the discard timer of the adaptation layer may be started when the relay terminal receives the SDU of the adaptation layer sent by its previous hop node.
  • the RLC layer discards the The third RLC layer SDU and/or the PDU corresponding to the third RLC layer SDU.
  • the next layer of the RLC layer may be the MAC layer.
  • the method in this embodiment of the present disclosure further includes:
  • the RLC layer does not perform SDU discarding
  • the RLC layer does not perform SDU discarding, that is, the RLC layer does not perform any processing.
  • the relay terminal sends second indication information to its next-hop node, which is used to instruct the next-hop node to perform SDU and/or PDU discarding processing.
  • the specific protocol layer of the relay terminal performs service data unit SDU and/or protocol data unit PDU discarding based on the second indication information from the previous hop node processing, including:
  • the specific protocol layer determines the SDU and/or PDU of the specific protocol layer to be discarded according to the second indication information
  • the specific protocol layer is the adaptation layer or the RLC layer.
  • the adaptation layer determines the adaptation layer SDU and/or PDU to be discarded (need to be discarded) according to the second indication information from the previous hop node of the relay terminal.
  • the RLC layer determines the RLC layer SDU and/or PDU to be discarded (need to be discarded) according to the second indication information from the last hop node of the relay terminal.
  • the specific protocol layer When the specific protocol layer receives the SDU and/or PDU of the specific protocol layer sent by the previous hop node of the relay terminal, the specific protocol layer discards the SDU and/or PDU .
  • the specific protocol layer receives the SDU and/or PDU that needs to be discarded from the previous hop node, and directly discards the SDU and/or PDU.
  • the second indication information includes at least one of the following:
  • the number of the PDU to be discarded is the number of the PDU to be discarded.
  • receiving the second indication information sent by the previous hop node of the relay terminal includes:
  • receiving the second indication information sent by the previous hop node of the relay terminal includes:
  • the sending condition is: the last hop node of the relay terminal determines the specific protocol to be discarded
  • the SDU and/or PDU of the specific protocol layer, and the PDU corresponding to the SDU of the specific protocol layer has been transmitted to the lower layer of the specific protocol layer.
  • the last hop node of the relay terminal when the last hop node of the relay terminal satisfies the above sending condition, the last hop node sends the second indication information to the relay terminal.
  • Embodiment 5 The adaptation layer of the Relay UE performs SDU and/or PDU discarding (U2N relay downlink transmission) based on the second indication information from the previous hop node, see FIG. 4 .
  • Step C1 The network side device performs packet discarding processing
  • the network-side device starts the corresponding discardTimer from the high-layer PDCP SDU.
  • the PDCP sending entity corresponding to the PDCP SDU needs to discard the PDCP SDU and the related PDCP Data PDU. If the PDCP Data PDU related to the PDCP SDU has been delivered to the adaptation layer, the PDCP sending entity sends third indication information to its corresponding adaptation layer to instruct the adaptation layer to discard the PDCP Data PDU.
  • the adaptation layer of the network side device receives the third indication information, and determines the adaptation layer SDU that needs to be discarded according to the third indication information; after that, one of the following operations is performed:
  • the adaptation layer discards the adaptation layer SDU and/or the PDU corresponding to the adaptation layer SDU.
  • the network side device determines that it needs to send the second indication information to the Relay UE.
  • Step C2 the network side device sends the second indication information to the Relay UE;
  • the second indication information includes at least one of the following:
  • the number of the PDU to be discarded is the number of the PDU to be discarded.
  • the identification information of the remote terminal can be assigned by the Relay UE or the network side equipment for the remote terminal, or it can be the unique identifier of the remote terminal, such as 5G S-Temporary Mobile Subscription Identifier (5G S-Temporary Mobile Subscription Identifier, 5G-S-TMSI).
  • 5G S-Temporary Mobile Subscription Identifier 5G-S-TMSI
  • the transmission mode of the second indication information may be one of the following:
  • RRC signaling such as PC5-RRC or Uu RRC signaling
  • Physical layer control information such as SCI or PDCCH.
  • Step C3 Relay UE performs packet discard processing
  • the adaptation layer of the Relay UE receives the second indication information from the network side device, and determines the adaptation layer SDU and/or PDU that needs to be discarded according to the second indication information. If the adaptation layer of the Relay UE receives the SDU and/or PDU from the network side device, it will be discarded directly and does not need to be forwarded to the Remote UE.
  • Step C4 The Relay UE forwards the data packet from the network side device to the Remote UE.
  • the Relay UE forwards the data packet from the network side device and processed in step C3 to the Remote UE.
  • Embodiment 6 The adaptation layer of the Relay UE performs SDU and/or PDU discarding (U2N relay uplink transmission) based on the second indication information from the previous hop node, see FIG. 5 .
  • Step D1 Remote UE performs packet discard processing
  • the Remote UE starts the corresponding discardTimer from the higher layer PDCP SDU.
  • the PDCP sending entity corresponding to the PDCP SDU needs to discard the PDCP SDU and the related PDCP Data PDU. If the PDCP Data PDU related to the PDCP SDU has been delivered to the adaptation layer, the PDCP sending entity sends third indication information to its corresponding adaptation layer to instruct the adaptation layer to discard the PDCP Data PDU.
  • the adaptation layer of the Remote UE receives the third indication information, and determines the adaptation layer SDU that needs to be discarded according to the third indication information; after that, one of the following operations is performed:
  • the adaptation layer discards the adaptation layer SDU and/or the PDU corresponding to the adaptation layer SDU.
  • the Remote UE determines that it needs to send the second indication information to the Relay UE.
  • Step D2 the Remote UE sends the second indication information to the Relay UE;
  • the second indication information includes at least one of the following:
  • the number of the PDU to be discarded is the number of the PDU to be discarded.
  • the identification information of the remote terminal may be assigned by the Relay UE or the network side equipment for the remote terminal, or may be a unique identifier of the remote terminal, such as 5G-S-TMSI.
  • the transmission mode of the second indication information may be one of the following:
  • RRC signaling such as PC5-RRC or Uu RRC signaling
  • Physical layer control information such as SCI or PDCCH.
  • Step D3 Relay UE performs packet discard processing
  • the adaptation layer of the Relay UE receives the second indication information from the Remote UE, and determines the adaptation layer SDU and/or PDU that needs to be discarded according to the second indication information. If the adaptation layer of the Relay UE receives the SDU and/or PDU from the Remote UE, it is directly discarded and does not need to be forwarded to the network side device.
  • Step D4 The Relay UE forwards the data packet from the Remote UE to the network side device.
  • the Relay UE forwards the data packet from the Remote UE and processed in step D3 to the network side device.
  • Embodiment 7 The adaptation layer or the RLC layer of the Relay UE performs SDU and/or PDU discarding (U2N relay uplink transmission) based on the second indication information from the previous hop node. Refer to FIG. 5 .
  • Step L1 Remote UE performs packet discard processing
  • the Remote UE enables PDCP duplication transmission, if the successful transmission of the PDCP PDU transmitted by path 1 is confirmed by the RLC layer, the PDCP entity instructs to delete the data packet corresponding to the PDCP PDU on path 2 of the repeated transmission.
  • the PDCP sending entity corresponding to the PDCP PDU sends the third indication information to its corresponding adaptation layer, and the indication is The adaptation layer discards the PDCP Data PDU.
  • the adaptation layer of the Remote UE receives the third indication information, and determines the adaptation layer SDU that needs to be discarded according to the third indication information; after that, one of the following operations is performed:
  • the adaptation layer discards the adaptation layer SDU and/or the PDU corresponding to the adaptation layer SDU.
  • the Remote UE determines that it needs to send the second indication information to the Relay UE.
  • Step L2 the Remote UE sends the second indication information to the Relay UE;
  • the second indication information includes at least one of the following:
  • SDU number to be discarded (such as RLC or adaptation layer SDU number);
  • the PDU number to be discarded (such as RLC or adaptation layer PDU number).
  • the identification information of the remote terminal may be assigned to the remote terminal by the Relay UE or the network side device, or may be a unique identifier of the remote terminal, such as 5G-S-TMSI.
  • the transmission mode of the second indication information may be one of the following:
  • RRC signaling such as PC5-RRC or Uu RRC signaling
  • Physical layer control information such as SCI or PDCCH.
  • Step L3 Relay UE performs packet discard processing
  • the adaptation layer of the Relay UE receives the second indication information from the Remote UE, and determines the adaptation layer or RLC layer SDU and/or PDU to be discarded according to the second indication information. If the adaptation layer or the RLC layer of the Relay UE receives the SDU and/or PDU from the Remote UE, it is discarded directly and does not need to be forwarded to the network side device.
  • Step L4 The Relay UE forwards the data packet from the Remote UE to the network side device.
  • the Relay UE forwards the data packets from the Remote UE and processed in step L3 to the network side device.
  • Embodiment 8 The adaptation layer of the Relay UE performs SDU and/or PDU discarding (U2U relay) based on the second indication information from the previous hop node, see FIG. 6 .
  • Step E1 Remote UE2 performs packet discard processing
  • Remote UE2 starts the corresponding discardTimer from the higher layer PDCP SDU.
  • the PDCP sending entity corresponding to the PDCP SDU needs to discard the PDCP SDU and the related PDCP Data PDU. If the PDCP Data PDU related to the PDCP SDU has been delivered to the adaptation layer, the PDCP sending entity sends third indication information to its corresponding adaptation layer to instruct the adaptation layer to discard the PDCP Data PDU.
  • the adaptation layer of Remote UE2 receives the third indication information, and determines the adaptation layer SDU that needs to be discarded according to the third indication information; after that, one of the following operations is performed:
  • the adaptation layer discards the adaptation layer SDU and/or the PDU corresponding to the adaptation layer SDU.
  • the Remote UE2 determines to send the second indication information to the Relay UE.
  • Step E2 Remote UE2 sends second indication information to Relay UE;
  • the second indication information includes at least one of the following:
  • the number of the PDU to be discarded is the number of the PDU to be discarded.
  • the identification information of Remote UE1 may be allocated by Relay UE or Remote UE2 for the remote terminal, or may be the unique identification of Remote UE1, such as 5G-S-TMSI.
  • the transmission mode of the second indication information may be one of the following:
  • RRC signaling such as PC5-RRC or Uu RRC signaling
  • Physical layer control information such as SCI or PDCCH.
  • Step E3 Relay UE performs packet discard processing
  • the adaptation layer of the Relay UE receives the second indication information from the Remote UE2, and determines the adaptation layer SDU and/or PDU that needs to be discarded according to the second indication information. If the adaptation layer of the Relay UE receives the SDU and/or PDU from the Remote UE2, it will be discarded directly and does not need to be forwarded to the network side device.
  • Step E4 Relay UE forwards the data packet from Remote UE2 to Remote UE1.
  • the Relay UE forwards the data packet from the Remote UE2 and processed in step D3 to the Remote UE1.
  • the specific protocol layer of the relay terminal performs discarding of the service data unit SDU and/or protocol data unit PDU based on a timer, including:
  • the specific protocol layer is an adaptation layer
  • the fourth adaptation layer SDU sent by the previous hop node of the relay terminal is received, start the discard timer of the adaptation layer
  • a discard timer is introduced in the adaptation layer, and when the adaptation layer receives the fourth adaptation layer SDU sent by the previous hop node of the relay terminal, the discard timer of the adaptation layer is started.
  • the discard timer at the adaptation layer expires, and the fourth adaptation layer SDU or the PDU corresponding to the fourth adaptation layer SDU is not transmitted to the next adaptation layer
  • the adaptation layer discards the fourth adaptation layer SDU and/or the PDU corresponding to the fourth adaptation layer SDU.
  • the adaptation The layer does not perform SDU discarding
  • the adaptation layer does not perform SDU discarding, that is, the adaptation layer does not perform any processing.
  • the The layer below the adaptation layer sends fifth indication information, where the fifth indication information is used to instruct the layer below the adaptation layer to discard the SDU of this layer and/or the PDU corresponding to the SDU of this layer.
  • the next layer of the adaptation layer may be an RLC layer.
  • the discarding timer of the adaptation layer expires and the PDU corresponding to the fourth adaptation layer SDU is transmitted to the RLC layer
  • the fifth indication information is sent to the RLC layer, and the fifth indication information Used to instruct the RLC layer to discard the RLC SDU and/or the PDU corresponding to the RLC SDU.
  • the length of the discard timer of the adaptation layer is determined based on the end-to-end bearer or the delay requirement of the RLC channel.
  • the specific protocol layer of the relay terminal performs discarding of the service data unit SDU and/or protocol data unit PDU based on a timer, including:
  • the RLC layer discards the fourth RLC layer SDU and/or the PDU corresponding to the fourth RLC layer SDU.
  • the RLC layer does not execute the SDU throw away;
  • the RLC layer does not perform SDU discarding, that is, the RLC layer does not perform any processing.
  • the next hop node Send second indication information when the discard timer of the RLC layer expires, and the PDU corresponding to the fourth RLC layer SDU is transmitted to the next layer of the RLC layer, the next hop node Send second indication information.
  • the specific protocol layer of the relay terminal is based on the first indication information from the upper layer of the specific protocol layer of the relay terminal, the second indication information from the previous hop node, and the timing At least one of the processors performs service data unit SDU and/or protocol data unit PDU discard processing, and the specific protocol layer is an adaptation layer or a radio link control RLC layer, so that an adaptation layer is introduced in a relay scenario After multi-hop and multi-hop, it can ensure that SDU discarding can be carried out normally, avoid the congestion problem caused by unnecessary data transmission, better ensure the transmission of effective data, and improve the performance of the entire relay system.
  • the embodiment of the present disclosure also provides a specific device, including: a memory 720, a transceiver 700, and a processor 710: the memory 720 is used to store program instructions; the transceiver 700 is used to process Send and receive data under the control of the device 710; the processor 710 is used to read the program instructions in the memory 720 and perform the following operations:
  • the specific device executes the service data unit SDU based on at least one of the first indication information from the upper layer of the specific protocol layer of the specific device, the second indication information from the previous hop node, and the timer And/or protocol data unit PDU discard processing, wherein the specific device is a network side device or a remote terminal, and the specific protocol layer is an adaptation layer or a radio link control RLC layer.
  • the bus architecture may include any number of interconnected buses and bridges, specifically represented by one or more processors represented by a processor 710 and a memory 720
  • the various circuits of the memory are linked together.
  • the bus architecture can also link together various other circuits, such as peripherals, voltage regulators, and power management circuits, etc., which are well known in the art and therefore will not be further described herein.
  • the bus interface provides the interface.
  • Transceiver 700 may be a plurality of elements, including a transmitter and a receiver, providing a unit for communicating with various other devices over transmission media, including wireless channels, wired channels, optical cables, and other transmission media.
  • the processor 710 is responsible for managing the bus architecture and general processing, and the memory 720 may store data used by the processor 710 when performing operations.
  • the processor 710 can be a central processing unit (CPU), an application specific integrated circuit (Application Specific Integrated Circuit, ASIC), a field programmable gate array (Field-Programmable Gate Array, FPGA) or a complex programmable logic device (Complex Programmable Logic Device, CPLD), the processor can also adopt a multi-core architecture.
  • CPU central processing unit
  • ASIC Application Specific Integrated Circuit
  • FPGA field programmable gate array
  • CPLD Complex Programmable Logic Device
  • the bus architecture may include any number of interconnected buses and bridges, specifically one or more processors represented by processor 710 and various circuit links of memory represented by memory 720 together.
  • the bus architecture can also link together various other circuits, such as peripherals, voltage regulators, and power management circuits, etc., which are well known in the art and therefore will not be further described herein.
  • the bus interface provides the interface.
  • Transceiver 700 may be a plurality of elements, including a transmitter and a receiver, providing means for communicating with various other devices over transmission media, including wireless channels, wired channels, fiber optic cables, etc. Transmission medium.
  • the user interface 730 may also be an interface capable of connecting externally and internally to required equipment, and the connected equipment includes but not limited to a keypad, a display, a speaker, a microphone, a joystick, and the like.
  • the processor 710 is responsible for managing the bus architecture and general processing, and the memory 720 may store data used by the processor 710 when performing operations.
  • the processor 710 may be a central processing unit (CPU), an application specific integrated circuit (Application Specific Integrated Circuit, ASIC), a field programmable gate array (Field-Programmable Gate Array, FPGA) or a complex programmable logic device (Complex Programmable Logic Device, CPLD), the processor 710 can also adopt a multi-core architecture.
  • CPU central processing unit
  • ASIC Application Specific Integrated Circuit
  • FPGA field programmable gate array
  • CPLD Complex Programmable Logic Device
  • the processor 710 is configured to execute any one of the methods provided in the embodiments of the present disclosure according to the obtained executable instructions by calling the program instructions stored in the memory.
  • the processor 710 and the memory 720 may also be arranged physically separately.
  • the transceiver 700 is also used for:
  • processor 710 is further configured to:
  • the discarding timer corresponding to the first packet data convergence protocol PDCP SDU expires, and the first PDCP entity determines that the PDCP protocol data unit PDU related to the first PDCP SDU is transmitted to the corresponding
  • the adaptation layer is made to receive the first indication information sent by the first PDCP entity through the transceiver, and the first PDCP entity is a PDCP entity in the PDCP layer corresponding to the first PDCP SDU;
  • processor 710 is further configured to:
  • the second indication information is sent to the next-hop node through the transceiver.
  • processor 710 is further configured to:
  • the discard timer corresponding to the second PDCP SDU expires, and the second PDCP entity determines that the PDCP PDU related to the second PDCP SDU is transmitted to the corresponding adaptation layer, using
  • the adaptation layer receives third indication information sent by a second PDCP entity, where the second PDCP entity is a PDCP entity in the PDCP layer corresponding to the second PDCP SDU, and the third indication information is used to indicate that the adaptation layer
  • the distribution layer discards the PDCP PDU;
  • the adaptation layer determines the second adaptation layer SDU to be discarded according to the third indication information
  • the RLC layer determines the first RLC layer SDU to be discarded according to the first indication information
  • the RLC layer discards the first RLC layer SDU And/or the PDU corresponding to the first RLC layer SDU.
  • processor 710 is further configured to:
  • processor 610 is further configured to:
  • the second indication information is sent to the next-hop node through the transceiver.
  • processor 710 is further configured to:
  • the specific protocol layer When the specific protocol layer receives the SDU and/or PDU of the specific protocol layer sent by the previous hop node, the specific protocol layer is made to discard the SDU and/or PDU.
  • the second indication information includes at least one of the following:
  • the number of the PDU to be discarded is the number of the PDU to be discarded.
  • the transceiver 700 is also used for:
  • the transceiver 700 is also used for:
  • the sending condition is: the last hop node of the specific device determines that the specific protocol layer to be discarded SDU and/or PDU, and the PDU corresponding to the SDU of the specific protocol layer has been transmitted to the lower layer of the specific protocol layer.
  • processor 710 is further configured to:
  • the specific protocol layer is an adaptation layer
  • the third adaptation layer SDU sent by the PDCP layer is received, start the discard timer of the adaptation layer
  • the discard timer of the adaptation layer expires, and the third adaptation layer SDU or the PDU corresponding to the third adaptation layer SDU is not transmitted to the next layer of the adaptation layer, causing the adaptation layer to discard the third adaptation layer SDU and/or the PDU corresponding to the third adaptation layer SDU.
  • processor 710 is further configured to:
  • the adaptation layer is not executed to discard the SDU ;or
  • the The lower layer sends fourth indication information, where the fourth indication information is used to instruct the lower layer of the adaptation layer to discard the SDU of this layer and/or the PDU corresponding to the SDU of this layer.
  • the length of the discard timer of the adaptation layer is determined based on the end-to-end bearer or the delay requirement of the RLC channel.
  • processor 710 is further configured to:
  • the discard timer of the RLC layer is started;
  • the RLC The layer discards the second RLC layer SDU and/or the PDU corresponding to the second RLC layer SDU.
  • processor 710 is further configured to:
  • the RLC layer is not executed to discard the SDU;
  • the specific device in the embodiment of the present disclosure uses the specific protocol layer of the specific device based on at least the first indication information of the upper layer of the specific protocol layer of the specific device, the second indication information from the previous hop node, and the timer A service data unit SDU and/or protocol data unit PDU discard processing, wherein the specific device is a network side device or a remote terminal, and the specific protocol layer is an adaptation layer or a radio link control RLC layer, so , after introducing the adaptation layer and multi-hop in the relay scenario, it can ensure that SDU discarding can be carried out normally, avoid the congestion problem caused by unnecessary data transmission, better ensure the transmission of effective data, and improve the entire relay system performance.
  • an embodiment of the present disclosure also provides a data processing device, including:
  • the first discard processing unit 801 is configured to make the specific protocol layer of the specific device based on the first indication information from the upper layer of the specific protocol layer of the specific device, the second indication information from the previous hop node, and the timer At least one of performing service data unit SDU and/or protocol data unit PDU discard processing, wherein the specific device is a network side device or a remote terminal, and the specific protocol layer is an adaptation layer or a radio link control RLC layer .
  • the device of the embodiment of the present disclosure may also include:
  • the first receiving unit is configured to receive the first indication information sent by the upper layer of the specific protocol layer; or,
  • the second receiving unit is configured to receive the second indication information sent by the previous hop node of the specific device.
  • the first discard processing unit 801 is specifically configured to:
  • the discarding timer corresponding to the first packet data convergence protocol PDCP SDU expires, and the first PDCP entity determines that the PDCP protocol data unit PDU related to the first PDCP SDU is transmitted to the corresponding
  • the adaptation layer causing the adaptation layer to receive first indication information sent by a first PDCP entity, where the first PDCP entity is a PDCP entity in the PDCP layer corresponding to the first PDCP SDU;
  • the adaptation layer determines the first adaptation layer SDU to be discarded according to the first indication information
  • the adaptation layer discards the first adaptation layer SDU An adaptation layer SDU and/or a PDU corresponding to the first adaptation layer SDU.
  • the device of the embodiment of the present disclosure may also include:
  • the first processing unit is configured to, when the PDU corresponding to the adaptation layer SDU is transmitted to the next layer of the adaptation layer, the adaptation layer does not perform SDU discarding; or,
  • a first sending unit configured to send second indication information to a next-hop node when a PDU corresponding to the adaptation layer SDU is transmitted to a layer below the adaptation layer.
  • the first discard processing unit 801 is specifically configured to:
  • the discard timer corresponding to the second PDCP SDU expires, and the second PDCP entity determines that the PDCP PDU related to the second PDCP SDU is transmitted to the corresponding adaptation layer, using
  • the adaptation layer receives third indication information sent by a second PDCP entity, where the second PDCP entity is a PDCP entity in the PDCP layer corresponding to the second PDCP SDU, and the third indication information is used to indicate that the adaptation layer
  • the distribution layer discards the PDCP PDU;
  • the adaptation layer determines the second adaptation layer SDU to be discarded according to the third indication information
  • the RLC layer determines the first RLC layer SDU to be discarded according to the first indication information
  • the RLC layer discards the first RLC layer SDU And/or the PDU corresponding to the first RLC layer SDU.
  • the device of the embodiment of the present disclosure may also include:
  • the second processing unit is configured to cause the adaptation layer to discard the A second adaptation layer SDU and/or a PDU corresponding to the second adaptation layer SDU.
  • the device of the embodiment of the present disclosure may also include:
  • a third processing unit configured to cause the RLC layer not to perform SDU discarding when the PDU corresponding to the first RLC layer SDU is transmitted to the next layer of the RLC layer; or,
  • the second sending unit is configured to send second indication information to a next-hop node when the PDU corresponding to the first RLC layer SDU is transmitted to a lower layer of the RLC layer.
  • the first discard processing unit 801 is specifically configured to:
  • the specific protocol layer When the specific protocol layer receives the SDU and/or PDU of the specific protocol layer sent by the previous hop node, the specific protocol layer discards the SDU and/or PDU.
  • the second indication information includes at least one of the following:
  • the number of the PDU to be discarded is the number of the PDU to be discarded.
  • the second receiving unit is specifically configured to:
  • the second receiving unit is specifically configured to:
  • the sending condition is: the last hop node of the specific device determines that the specific protocol layer to be discarded SDU and/or PDU, and the PDU corresponding to the SDU of the specific protocol layer has been transmitted to the lower layer of the specific protocol layer.
  • the first discard processing unit 801 is specifically configured to:
  • the specific protocol layer is an adaptation layer
  • the third adaptation layer SDU sent by the PDCP layer is received, start the discard timer of the adaptation layer
  • the discard timer of the adaptation layer expires, and the third adaptation layer SDU or the PDU corresponding to the third adaptation layer SDU is not transmitted to the next layer of the adaptation layer, causing the adaptation layer to discard the third adaptation layer SDU and/or the PDU corresponding to the third adaptation layer SDU.
  • the device of the embodiment of the present disclosure may also include:
  • the fourth processing unit is configured to make the discarding timer of the adaptation layer expire and the PDU corresponding to the SDU of the third adaptation layer is transmitted to the next layer of the adaptation layer, causing the The adaptation layer does not perform SDU discarding; or,
  • the third sending unit is configured to, when the discarding timer of the adaptation layer expires and the PDU corresponding to the third adaptation layer SDU is transmitted to the next layer of the adaptation layer, send the The layer below the adaptation layer sends fourth indication information, where the fourth indication information is used to instruct the layer below the adaptation layer to discard the SDU of this layer and/or the PDU corresponding to the SDU of this layer.
  • the length of the discard timer of the adaptation layer is determined based on the end-to-end bearer or the delay requirement of the RLC channel.
  • the first discard processing unit 801 is specifically configured to:
  • the discard timer of the RLC layer is started;
  • the RLC The layer discards the second RLC layer SDU and/or the PDU corresponding to the second RLC layer SDU.
  • the device of the embodiment of the present disclosure may also include:
  • the fifth processing unit is configured to, when the discarding timer of the RLC layer expires and the PDU corresponding to the second RLC layer SDU is transmitted to the next layer of the RLC layer, the RLC layer does not execute SDU drop; or,
  • a fourth sending unit configured to send to the next-hop node when the discard timer of the RLC layer expires and the PDU corresponding to the second RLC layer SDU is transmitted to the next layer of the RLC layer Second instruction message.
  • the data processing apparatus in the embodiment of the present disclosure makes the specific protocol layer of a specific device based on the first indication information of the upper layer of the specific protocol layer of the specific device, the second indication information from the previous hop node, and the timer At least one of performing service data unit SDU and/or protocol data unit PDU discard processing, wherein the specific device is a network side device or a remote terminal, and the specific protocol layer is an adaptation layer or a radio link control RLC layer
  • the specific protocol layer is an adaptation layer or a radio link control RLC layer
  • each functional unit in each embodiment of the present disclosure may be integrated into one processing unit, each unit may exist separately physically, or two or more units may be integrated into one unit.
  • the above-mentioned integrated units can be implemented in the form of hardware or in the form of software functional units.
  • the integrated unit is implemented in the form of a software function unit and sold or used as an independent product, it can be stored in a processor-readable storage medium.
  • the essence of the technical solution of the present disclosure or the part that contributes to the related technology or all or part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium.
  • a computer device which may be a personal computer, a server, or a network device, etc.
  • a processor processor
  • the aforementioned storage media include: U disk, mobile hard disk, read-only memory (Read-Only Memory, ROM), random access memory (Random Access Memory, RAM), magnetic disk or optical disc and other media that can store program codes. .
  • a processor-readable storage medium stores program instructions, and the program instructions are used to make the processor perform the following steps:
  • the specific device executes the service data unit SDU based on at least one of the first indication information from the upper layer of the specific protocol layer of the specific device, the second indication information from the previous hop node, and the timer And/or protocol data unit PDU discard processing, wherein the specific device is a network side device or a remote terminal, and the specific protocol layer is an adaptation layer or a radio link control RLC layer.
  • the program When the program is executed by the processor, it can realize all the implementation methods in the above-mentioned embodiment of the method applied to the specific device side as shown in FIG. 9 , and details are not repeated here to avoid repetition.
  • an embodiment of the present disclosure also provides a relay terminal, including: a memory 920, a transceiver 900, and a processor 910; the memory 920 is used to store computer programs; the transceiver 900 is used to process Send and receive data under the control of the controller 910; the processor 910 is used to read the computer program in the memory 920 and perform the following operations:
  • Make the specific protocol layer of the relay terminal execute the service data based on at least one of the first indication information from the upper layer of the specific protocol layer of the relay terminal, the second indication information from the previous hop node, and the timer A unit SDU and/or a protocol data unit PDU is discarded, and the specific protocol layer is an adaptation layer or a radio link control RLC layer.
  • the bus architecture may include any number of interconnected buses and bridges, specifically one or more processors represented by the processor 910 and various circuits of the memory represented by the memory 920 are linked together.
  • the bus architecture can also link together various other circuits, such as peripherals, voltage regulators, and power management circuits, etc., which are well known in the art and therefore will not be further described herein.
  • the bus interface provides the interface.
  • Transceiver 900 may be a plurality of elements, including a transmitter and a receiver, providing means for communicating with various other devices over transmission media, including wireless channels, wired channels, fiber optic cables, etc. Transmission medium.
  • the user interface 930 may also be an interface capable of connecting externally and internally to required equipment, and the connected equipment includes but not limited to a keypad, a display, a speaker, a microphone, a joystick, and the like.
  • the processor 910 is responsible for managing the bus architecture and general processing, and the memory 920 may store data used by the processor 910 when performing operations.
  • the processor 910 may be a central processing unit (CPU), an application specific integrated circuit (Application Specific Integrated Circuit, ASIC), a field programmable gate array (Field-Programmable Gate Array, FPGA) or a complex programmable logic device (Complex Programmable Logic Device, CPLD), the processor 910 can also adopt a multi-core architecture.
  • CPU central processing unit
  • ASIC Application Specific Integrated Circuit
  • FPGA field programmable gate array
  • CPLD Complex Programmable Logic Device
  • the processor 910 is configured to execute any one of the methods provided in the embodiments of the present disclosure according to the obtained executable instructions by calling the program instructions stored in the memory.
  • the processor 910 and the memory 920 may also be arranged physically separately.
  • the transceiver 900 is also used for:
  • the second indication information sent by the previous hop node of the relay terminal is received.
  • processor 910 is further configured to:
  • the RLC layer determines the third RLC layer SDU to be discarded according to the first indication information
  • the RLC layer discards the third RLC layer SDU And/or the PDU corresponding to the third RLC layer SDU.
  • processor 910 is further configured to:
  • the second indication information is sent to the next-hop node through the transceiver.
  • processor 910 is further configured to:
  • the specific protocol layer When the specific protocol layer receives the SDU and/or PDU of the specific protocol layer sent by the last hop node of the relay terminal, the specific protocol layer discards the SDU and/or PDU .
  • the second indication information includes at least one of the following:
  • the number of the PDU to be discarded is the number of the PDU to be discarded.
  • the transceiver 900 is also used for:
  • the transceiver 900 is also used for:
  • the sending condition is: the last hop node of the relay terminal determines the specific protocol to be discarded
  • the SDU and/or PDU of the specific protocol layer, and the PDU corresponding to the SDU of the specific protocol layer has been transmitted to the lower layer of the specific protocol layer.
  • processor 910 is further configured to:
  • the specific protocol layer is an adaptation layer
  • the fourth adaptation layer SDU sent by the previous hop node of the relay terminal is received, start the discard timer of the adaptation layer
  • the discard timer of the adaptation layer expires, and the fourth adaptation layer SDU or the PDU corresponding to the fourth adaptation layer SDU is not transmitted to the next layer of the adaptation layer, causing the adaptation layer to discard the fourth adaptation layer SDU and/or the PDU corresponding to the fourth adaptation layer SDU.
  • processor 910 is further configured to:
  • the adaptation layer does not perform SDU discarding;
  • the The lower layer sends fifth indication information, where the fifth indication information is used to instruct the lower layer of the adaptation layer to discard the SDU of this layer and/or the PDU corresponding to the SDU of this layer.
  • processor 910 is further configured to:
  • the RLC The layer discards the fourth RLC layer SDU and/or the PDU corresponding to the fourth RLC layer SDU.
  • processor 910 is further configured to:
  • the RLC layer When the discarding timer of the RLC layer expires and the PDU corresponding to the fourth RLC layer SDU is transmitted to the next layer of the RLC layer, the RLC layer does not perform SDU discarding; or,
  • the transceiver When the discarding timer of the RLC layer expires and the PDU corresponding to the fourth RLC layer SDU is transmitted to the next layer of the RLC layer, the transceiver sends the second SDU to the next hop node. Instructions.
  • the specific protocol layer of the relay terminal is based on the first indication information from the upper layer of the specific protocol layer of the relay terminal, the second indication information from the previous hop node, and the timing At least one of the processors performs service data unit SDU and/or protocol data unit PDU discard processing, and the specific protocol layer is an adaptation layer or a radio link control RLC layer, so that an adaptation layer is introduced in a relay scenario After multi-hop and multi-hop, it can ensure that SDU discarding can be carried out normally, avoid the congestion problem caused by unnecessary data transmission, better ensure the transmission of effective data, and improve the performance of the entire relay system.
  • the implementation of the present disclosure also provides a data processing device, including:
  • the second discard processing unit 1001 is configured to make the specific protocol layer of the relay terminal based on the first indication information from the upper layer of the specific protocol layer of the relay terminal, the second indication information from the previous hop node, and the timing At least one of the processors performs service data unit SDU and/or protocol data unit PDU discard processing, and the specific protocol layer is an adaptation layer or a radio link control RLC layer.
  • the device of the embodiment of the present disclosure also includes:
  • the third receiving unit is configured to receive the second indication information sent by the previous hop node of the relay terminal.
  • the second discard processing unit 1001 is specifically configured to:
  • the RLC layer determines the third RLC layer SDU to be discarded according to the first indication information
  • the RLC layer discards the third RLC layer SDU And/or the PDU corresponding to the third RLC layer SDU.
  • the device of the embodiment of the present disclosure also includes:
  • a sixth processing unit configured to cause the RLC layer not to perform SDU discarding when the PDU corresponding to the third RLC layer SDU is transmitted to the next layer of the RLC layer; or,
  • a fifth sending unit configured to send second indication information to a next-hop node when the PDU corresponding to the third RLC layer SDU is transmitted to a layer lower than the RLC layer.
  • the second discard processing unit 1001 is specifically configured to:
  • the specific protocol layer When the specific protocol layer receives the SDU and/or PDU of the specific protocol layer sent by the previous hop node of the relay terminal, the specific protocol layer discards the SDU and/or PDU .
  • the second indication information includes at least one of the following:
  • the number of the PDU to be discarded is the number of the PDU to be discarded.
  • the third receiving unit is specifically used for:
  • the third receiving unit is specifically used for:
  • the sending condition is: the last hop node of the relay terminal determines the specific protocol to be discarded
  • the SDU and/or PDU of the specific protocol layer, and the PDU corresponding to the SDU of the specific protocol layer has been transmitted to the lower layer of the specific protocol layer.
  • the second discard processing unit 1001 is specifically configured to:
  • the specific protocol layer is an adaptation layer
  • the fourth adaptation layer SDU sent by the previous hop node of the relay terminal is received, start the discard timer of the adaptation layer
  • the discard timer of the adaptation layer expires, and the fourth adaptation layer SDU or the PDU corresponding to the fourth adaptation layer SDU is not transmitted to the next layer of the adaptation layer, causing the adaptation layer to discard the fourth adaptation layer SDU and/or the PDU corresponding to the fourth adaptation layer SDU.
  • the device of the embodiment of the present disclosure may also include:
  • a seventh processing unit configured to cause the adaptation layer to cause the The adaptation layer does not perform SDU discarding;
  • a sixth sending unit configured to send a message to the adaptation layer when the discard timer of the adaptation layer expires and the PDU corresponding to the SDU of the fourth adaptation layer is transmitted to the next layer of the adaptation layer
  • the layer below the adaptation layer sends fifth indication information, where the fifth indication information is used to instruct the layer below the adaptation layer to discard the SDU of this layer and/or the PDU corresponding to the SDU of this layer.
  • the second discard processing unit 1001 is specifically configured to:
  • the RLC The layer discards the fourth RLC layer SDU and/or the PDU corresponding to the fourth RLC layer SDU.
  • the device of the embodiment of the present disclosure may also include:
  • An eighth processing unit configured to prevent the RLC layer from perform SDU discard; or,
  • the seventh sending unit is configured to send to the next hop node when the discard timer of the RLC layer expires and the PDU corresponding to the fourth RLC layer SDU is transmitted to the next layer of the RLC layer Second instruction message.
  • the data processing device in the embodiment of the present disclosure makes the specific protocol layer of the relay terminal based on the first indication information from the layer above the specific protocol layer of the relay terminal, the second indication information from the previous hop node, and At least one of the timers performs service data unit SDU and/or protocol data unit PDU discard processing, and the specific protocol layer is an adaptation layer or a radio link control RLC layer, so that an adaptation layer is introduced in a relay scenario After layers and multi-hops, it can ensure that SDU discarding can be performed normally, avoiding congestion problems caused by unnecessary data transmission, better ensuring effective data transmission, and improving the performance of the entire relay system.
  • each functional unit in each embodiment of the present disclosure may be integrated into one processing unit, each unit may exist separately physically, or two or more units may be integrated into one unit.
  • the above-mentioned integrated units can be implemented in the form of hardware or in the form of software functional units.
  • the integrated unit is implemented in the form of a software function unit and sold or used as an independent product, it can be stored in a processor-readable storage medium.
  • the essence of the technical solution of the present disclosure or the part that contributes to the related technology or all or part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium.
  • a computer device which may be a personal computer, a server, or a network device, etc.
  • a processor processor
  • the aforementioned storage media include: U disk, mobile hard disk, read-only memory (Read-Only Memory, ROM), random access memory (Random Access Memory, RAM), magnetic disk or optical disc and other media that can store program codes. .
  • a processor-readable storage medium stores program instructions, and the program instructions are used to make the processor perform the following steps:
  • Make the specific protocol layer of the relay terminal execute the service data based on at least one of the first indication information from the upper layer of the specific protocol layer of the relay terminal, the second indication information from the previous hop node, and the timer A unit SDU and/or a protocol data unit PDU is discarded, and the specific protocol layer is an adaptation layer or a radio link control RLC layer.
  • the applicable system can be Global System of Mobile communication (GSM) system, Code Division Multiple Access (CDMA) system, Wideband Code Division Multiple Access (WCDMA) general packet Wireless business (General Packet Radio Service, GPRS) system, Long Term Evolution (Long Term Evolution, LTE) system, LTE Frequency Division Duplex (Frequency Division Duplex, FDD) system, LTE Time Division Duplex (Time Division Duplex, TDD) system, Long Term Evolution Advanced (LTE-A) system, Universal Mobile Telecommunication System (UMTS), Worldwide Interoperability for Microwave Access (WiMAX) system, 5G New Radio (New Radio, NR) system, etc.
  • GSM Global System of Mobile communication
  • CDMA Code Division Multiple Access
  • WCDMA Wideband Code Division Multiple Access
  • GPRS General Packet Radio Service
  • LTE Long Term Evolution
  • FDD Frequency Division Duplex
  • Time Division Duplex Time Division Duplex
  • TDD Time Division Duplex
  • LTE-A
  • the terminal device involved in the embodiments of the present disclosure may be a device that provides voice and/or data connectivity to users, a handheld device with a wireless connection function, or other processing devices connected to a wireless modem.
  • the name of the terminal equipment may be different.
  • the terminal equipment may be called User Equipment (User Equipment, UE).
  • the wireless terminal device can communicate with one or more core networks (Core Network, CN) via the radio access network (Radio Access Network, RAN), and the wireless terminal device can be a mobile terminal device, such as a mobile phone (or called a "cellular "telephones) and computers with mobile terminal equipment, such as portable, pocket, hand-held, computer built-in or vehicle-mounted mobile devices, which exchange language and/or data with the radio access network.
  • a mobile terminal device such as a mobile phone (or called a "cellular "telephones) and computers with mobile terminal equipment, such as portable, pocket, hand-held, computer built-in or vehicle-mounted mobile devices, which exchange language and/or data with the radio access network.
  • PCS Personal Communication Service
  • SIP Session Initiated Protocol
  • WLL Wireless Local Loop
  • PDA Personal Digital Assistant
  • Wireless terminal equipment can also be called system, subscriber unit, subscriber station, mobile station, mobile station, remote station, access point , remote terminal, access terminal, user terminal, user agent, and user device are not limited
  • the network device involved in the embodiments of the present disclosure may be a base station, and the base station may include multiple cells that provide services for terminals.
  • the base station can also be called an access point, or it can be a device in the access network that communicates with the wireless terminal device through one or more sectors on the air interface, or other names.
  • the network device can be used to interchange received over-the-air frames with Internet Protocol (IP) packets and act as a router between the wireless terminal device and the rest of the access network, which can include the Internet Protocol (IP) communication network.
  • IP Internet Protocol
  • Network devices may also coordinate attribute management for the air interface.
  • the network equipment involved in the embodiments of the present disclosure may be a network equipment (Base Transceiver Station, BTS) in Global System for Mobile communications (GSM) or Code Division Multiple Access (Code Division Multiple Access, CDMA) ), it can also be a network device (NodeB) in Wide-band Code Division Multiple Access (WCDMA), or it can be an evolved network device in a Long Term Evolution (LTE) system (evolutional Node B, eNB or e-NodeB), 5G base station (gNB) in the 5G network architecture (next generation system), can also be a home evolved base station (Home evolved Node B, HeNB), relay node (relay node) , a home base station (femto), a pico base station (pico), etc., are not limited in this embodiment of the present disclosure.
  • the network device may include a Centralized Unit (CU) node and a Distributed Unit (DU) node, and the Centralized Unit and the Distributed Unit may also be
  • MIMO transmission can be Single User MIMO (Single User MIMO, SU-MIMO) or Multi-User MIMO (Multiple User MIMO, MU-MIMO).
  • MIMO transmission can be two-dimensional MIMO (2Dimension MIMO, 2D-MIMO), three-dimensional MIMO (3Dimension MIMO, 3D-MIMO), full-dimensional MIMO (Full Dimension MIMO, FD-MIMO) or ultra-large Scale MIMO (massive-MIMO) can also be diversity transmission, precoding transmission or beamforming transmission, etc.
  • embodiments of the present disclosure may be provided as methods, systems, or computer program products. Accordingly, the present disclosure can take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present disclosure may take the form of a computer program product embodied on one or more computer-usable storage media (including but not limited to disk storage, optical storage, etc.) having computer-usable program code embodied therein.
  • processor-executable instructions may also be stored in a processor-readable memory capable of directing a computer or other programmable data processing device to operate in a specific manner, such that the instructions stored in the processor-readable memory produce a manufacturing product, the instruction device realizes the functions specified in one or more procedures of the flow chart and/or one or more blocks of the block diagram.
  • processor-executable instructions can also be loaded onto a computer or other programmable data processing device, causing a series of operational steps to be performed on the computer or other programmable device to produce a computer-implemented
  • the executed instructions provide steps for implementing the functions specified in the procedure or procedures of the flowchart and/or the block or blocks of the block diagrams.
  • the division of the above modules is only a division of logical functions, and may be fully or partially integrated into a physical entity or physically separated during actual implementation.
  • these modules can all be implemented in the form of calling software through processing elements; they can also be implemented in the form of hardware; some modules can also be implemented in the form of calling software through processing elements, and some modules can be implemented in the form of hardware.
  • the determining module may be a separate processing element, or may be integrated in a chip of the above-mentioned device.
  • it may be stored in the memory of the above-mentioned device in the form of program code, and a certain processing element of the above-mentioned device may Call and execute the functions of the modules identified above.
  • each step of the above method or each module above can be completed by an integrated logic circuit of hardware in the processor element or an instruction in the form of software.
  • each module, unit, subunit or submodule may be one or more integrated circuits configured to implement the above method, for example: one or more specific integrated circuits (Application Specific Integrated Circuit, ASIC), or, one or Multiple microprocessors (digital signal processor, DSP), or, one or more field programmable gate arrays (Field Programmable Gate Array, FPGA), etc.
  • ASIC Application Specific Integrated Circuit
  • DSP digital signal processor
  • FPGA Field Programmable Gate Array
  • the processing element may be a general-purpose processor, such as a central processing unit (Central Processing Unit, CPU) or other processors that can call program codes.
  • these modules can be integrated together and implemented in the form of a system-on-a-chip (SOC).
  • SOC system-on-a-chip

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Abstract

本公开提供一种数据处理方法、装置及设备。本公开的方法:远端终端的特定协议层基于来自所述远端终端的特定协议层的上一层的第一指示信息、来自上一跳节点的第二指示信息、定时器中的至少一项执行服务数据单元SDU和/或协议数据单元PDU丢弃处理,其中,所述特定协议层为适配层或者无线链路控制RLC层。

Description

数据处理方法、装置及设备
相关申请的交叉引用
本公开主张在2021年09月16日在中国提交的中国专利申请No.202111085212.0的优先权,其全部内容通过引用包含于此。
技术领域
本公开涉及通信技术领域,尤其涉及一种数据处理方法、装置及设备。
背景技术
为了扩展网络覆盖,一种解决方案就是引入中继(Relay)。Relay可以是一个具有中继功能的终端。中继类型主要有两种:
用户设备至网络中继(UE-to-Network Relay,U2N relay):对于U2N relay,Relay和网络之间的接口使用Uu接口,和被中继UE(也称为远端UE)之间的接口使用直接通信接口。Relay和网络之间的链路对远端UE而言可以称为BH(Backhaul link,回程链路)。
用户设备至用户设备中继(UE-to-UE Relay,U2U relay):对于U2U relay,两个被中继UE可以通过中继UE进行数据传输。
UE-to-Network Relay和UE-to-UE Relay引入后,Relay场景下的协议栈相比传统通信协议栈有如下不同:
1)在分组数据汇聚协议(Packet Data Convergence Protocol,PDCP)实体和无线链路控制(Radio Link Control,RLC)实体之间增加了适配层;
2)PDCP层和传统通信接口一样是端到端的,但是RLC实体是逐跳式(hop by hop)的,其中,hop by hop指的是每跳的RLC实体是对等的RLC实体。
因此,在中继场景下如何实现数据包丢弃是一个亟待解决的问题。
发明内容
本公开的目的在于提供一种数据处理丢弃方法、装置及设备,用以解决 在中继场景下如何实现数据包丢弃的问题。
为了实现上述目的,本公开实施例提供一种数据处理方法,包括:
远端终端的特定协议层基于来自所述远端终端的特定协议层的上一层的第一指示信息、来自上一跳节点的第二指示信息、定时器中的至少一项执行服务数据单元SDU和/或协议数据单元PDU丢弃处理,其中,所述特定协议层为适配层或者无线链路控制RLC层。
其中,所述方法还包括:
接收所述特定协议层的上一层发送的第一指示信息;或者,
接收所述远端终端的上一跳节点发送的第二指示信息。
其中,所述特定协议层为适配层,远端终端的特定协议层基于来自所述远端终端的特定协议层的上一层的第一指示信息执行服务数据单元SDU和/或协议数据单元PDU丢弃处理,包括:
在第一分组数据汇聚协议PDCP SDU对应的丢弃定时器超时,且第一PDCP实体确定与所述第一PDCP SDU相关的PDCP PDU传输至对应的适配层的情况下,所述适配层接收第一PDCP实体发送的第一指示信息,所述第一PDCP实体为与第一PDCP SDU对应的PDCP层中的PDCP实体;
所述适配层根据所述第一指示信息确定待丢弃的第一适配层SDU;
在所述待丢弃的第一适配层SDU或者与所述第一适配层SDU对应的PDU未传输至所述适配层的下一层的情况下,所述适配层丢弃所述第一适配层SDU和/或与所述第一适配层SDU对应的PDU。
其中,根据所述第一指示信息确定待丢弃的适配层SDU之后,所述方法还包括:
在与所述适配层SDU对应的PDU传输至所述适配层的下一层的情况下,所述适配层不执行SDU丢弃;或者,
在与所述适配层SDU对应的PDU传输至所述适配层的下一层的情况下,向下一跳节点发送用于指示执行所述特定协议层的SDU和/或PDU丢弃处理的指示信息。
其中,所述特定协议层为RLC层,远端终端的特定协议层基于来自所述远端终端的特定协议层的上一层的第一指示信息执行服务数据单元SDU和/ 或协议数据单元PDU丢弃处理,包括:
在第二PDCP SDU对应的丢弃定时器超时,且第二PDCP实体确定与所述第二PDCP SDU相关的PDCP PDU传输至对应的适配层的情况下,所述适配层接收第二PDCP实体发送的第三指示信息,所述第二PDCP实体为与第二PDCP SDU对应的PDCP层中的PDCP实体,所述第三指示信息用于指示所述适配层丢弃所述PDCP PDU;
所述适配层根据所述第三指示信息确定待丢弃的第二适配层SDU;
在与所述第二适配层SDU对应的PDU传输至RLC层的情况下,所述RLC层接收所述适配层发送的第一指示信息;
所述RLC层根据所述第一指示信息确定待丢弃的第一RLC层SDU;
在所述待丢弃的第一RLC层SDU或者与所述第一RLC层SDU对应的PDU未传输至所述RLC层的下一层的情况下,所述RLC层丢弃所述第一RLC层SDU和/或所述第一RLC层SDU对应的PDU。
其中,所述适配层根据所述第三指示信息确定待丢弃的第二适配层SDU之后,所述方法还包括:
在所述待丢弃的第二适配层SDU或者与所述第二适配层SDU对应的PDU未传输至RLC层的情况下,所述适配层丢弃所述第二适配层SDU和/或与所述第二适配层SDU对应的PDU。
其中,所述RLC层根据所述第一指示信息确定待丢弃的第一RLC层SDU之后,所述方法还包括:
在与所述第一RLC层SDU对应的PDU传输至所述RLC层的下一层的情况下,所述RLC层不执行SDU丢弃;或者,
在与所述第一RLC层SDU对应的PDU传输至所述RLC层的下一层的情况下,向下一跳节点发送第二指示信息。
其中,远端终端的特定协议层基于来自上一跳节点的第二指示信息执行服务数据单元SDU和/或协议数据单元PDU丢弃处理,包括:
所述特定协议层根据所述第二指示信息,确定待丢弃的特定协议层的SDU和/或PDU;
在所述特定协议层接收到所述上一跳节点发送的所述特定协议层的所述 SDU和/或PDU的情况下,所述特定协议层丢弃所述SDU和/或PDU。
其中,所述第二指示信息包括下述中的至少一项:
远端终端的标识信息;
逻辑信道的标识信息;
端到端承载的标识信息;
待丢弃的SDU编号;
待丢弃的PDU编号。
其中,接收所述远端终端的上一跳节点发送的第二指示信息,包括:
通过下述信息中的一者,接收所述远端终端的上一跳节点发送的第二指示信息:
无线资源控制RRC信令;
RLC控制PDU;
媒体接入控制层控制单元MAC CE;
物理层控制信息。
其中,接收所述远端终端的上一跳节点发送的第二指示信息,包括:
接收所述远端终端的上一跳节点在满足发送条件的情况下、发送的第二指示信息,其中,所述发送条件为:所述远端终端的上一跳节点确定待丢弃的特定协议层的SDU和/或PDU,且所述特定协议层的SDU对应的PDU已经传输至所述特定协议层的下一层。
其中,远端终端的特定协议层基于定时器执行服务数据单元SDU和/或协议数据单元PDU丢弃处理,包括:
在所述特定协议层为适配层,且接收到PDCP层发送的第三适配层SDU的情况下,启动所述适配层的丢弃定时器;
在所述适配层的丢弃定时器超时,且所述第三适配层SDU或者与所述第三适配层SDU对应的PDU未传输至所述适配层的下一层的情况下,所述适配层丢弃所述第三适配层SDU和/或与所述第三适配层SDU对应的PDU。
其中,启动所述适配层的丢弃定时器之后,所述方法还包括:
在所述适配层的丢弃定时器超时,且与所述第三适配层SDU对应的PDU传输至所述适配层的下一层的情况下,所述适配层不执行SDU丢弃;或者,
在所述适配层的丢弃定时器超时,且与所述第三适配层SDU对应的PDU传输至所述适配层的下一层的情况下,向所述适配层的下一层发送第四指示信息,所述第四指示信息用于指示所述适配层的下一层丢弃该层SDU和/或该层SDU对应的PDU。
其中,所述适配层的丢弃定时器的长度基于端到端承载或者RLC信道的时延要求确定。
其中,远端终端的特定协议层基于定时器执行服务数据单元SDU和/或协议数据单元PDU丢弃处理,包括:
在所述特定协议层为RLC层,且接收到适配层发送的第二RLC层SDU的情况下,启动所述RLC层的丢弃定时器;
在所述RLC层的丢弃定时器超时,且所述第二RLC层SDU或者与所述第二RLC层SDU对应的PDU未传输至所述RLC层的下一层的情况下,所述RLC层丢弃所述第二RLC层SDU和/或与所述第二RLC层SDU对应的PDU。
其中,启动所述RLC层的丢弃定时器之后,所述方法还包括:
在所述RLC层的丢弃定时器超时,且与所述第二RLC层SDU对应的PDU传输至所述RLC层的下一层的情况下,所述RLC层不执行SDU丢弃;或者,
在所述RLC层的丢弃定时器超时,且与所述第二RLC层SDU对应的PDU传输至所述RLC层的下一层的情况下,向下一跳节点发送第二指示信息。
为了实现上述目的,本公开实施例还提供一种数据处理方法,包括:
中继终端的特定协议层基于来自所述中继终端的特定协议层的上一层的第一指示信息、来自上一跳节点的第二指示信息、定时器中的至少一项执行服务数据单元SDU和/或协议数据单元PDU丢弃处理,所述特定协议层为适配层或者无线链路控制RLC层。
其中,所述方法还包括:
接收所述中继终端的上一跳节点发送的第二指示信息。
其中,中继终端的特定协议层基于来自所述中继终端的特定协议层的上一层的第一指示信息执行服务数据单元SDU和/或协议数据单元PDU丢弃处 理,包括:
在所述特定协议层为RLC层,且接收到适配层发送的第一指示信息的情况下,所述RLC层根据所述第一指示信息确定待丢弃的第三RLC层SDU;
在所述待丢弃的第三RLC层SDU或者与所述第三RLC层SDU对应的PDU未传输至所述RLC层的下一层的情况下,所述RLC层丢弃所述第三RLC层SDU和/或所述第三RLC层SDU对应的PDU。
其中,所述RLC层根据所述第一指示信息确定待丢弃的第三RLC层SDU之后,所述方法还包括:
在与所述第三RLC层SDU对应的PDU传输至所述RLC层的下一层的情况下,所述RLC层不执行SDU丢弃;或者,
在与所述第三RLC层SDU对应的PDU传输至所述RLC层的下一层的情况下,向下一跳节点发送用于指示执行所述特定协议层的SDU和/或PDU丢弃处理的指示信息。
其中,中继终端的特定协议层基于来自上一跳节点的第二指示信息执行服务数据单元SDU和/或协议数据单元PDU丢弃处理,包括:
所述特定协议层根据所述第二指示信息,确定待丢弃的特定协议层的SDU和/或PDU;
在所述特定协议层接收到所述中继终端的上一跳节点发送的所述特定协议层的所述SDU和/或PDU的情况下,所述特定协议层丢弃所述SDU和/或PDU。
其中,所述第二指示信息包括下述中的至少一项:
远端终端的标识信息;
逻辑信道的标识信息;
端到端承载的标识信息;
待丢弃的SDU编号;
待丢弃的PDU编号。
其中,接收所述中继终端的上一跳节点发送的第二指示信息,包括:
通过下述信息中的一者,接收所述中继终端的上一跳节点发送的第二指示信息:
无线资源控制RRC信令;
RLC控制PDU;
媒体接入控制层控制单元MAC CE;
物理层控制信息。
其中,接收所述中继终端的上一跳节点发送的第二指示信息,包括:
接收所述中继终端的上一跳节点在满足发送条件的情况下、发送的第二指示信息,其中,所述发送条件为:所述中继终端的上一跳节点确定待丢弃的特定协议层的SDU和/或PDU,且所述特定协议层的SDU对应的PDU已经传输至所述特定协议层的下一层。
其中,中继终端的特定协议层基于定时器执行服务数据单元SDU和/或协议数据单元PDU丢弃处理,包括:
在所述特定协议层为适配层,且接收到中继终端的上一跳节点发送的第四适配层SDU的情况下,启动所述适配层的丢弃定时器;
在所述适配层的丢弃定时器超时,且所述第四适配层SDU或者与所述第四适配层SDU对应的PDU未传输至所述适配层的下一层的情况下,所述适配层丢弃所述第四适配层SDU和/或与所述第四适配层SDU对应的PDU。
其中,启动所述适配层的丢弃定时器之后,所述方法还包括:
在所述适配层的丢弃定时器超时,且与所述第四适配层SDU对应的PDU传输至所述适配层的下一层的情况下,所述适配层不执行SDU丢弃;或者,
在所述适配层的丢弃定时器超时,且与所述第四适配层SDU对应的PDU传输至所述适配层的下一层的情况下,向所述适配层的下一层发送第五指示信息,所述第五指示信息用于指示所述适配层的下一层丢弃该层SDU和/或该层SDU对应的PDU。
其中,中继终端的特定协议层基于定时器执行服务数据单元SDU和/或协议数据单元PDU丢弃处理,包括:
在所述特定协议层为RLC层,且接收到适配层发送的第四RLC层SDU的情况下,启动所述RLC层的丢弃定时器;
在所述RLC层的丢弃定时器超时,且所述第四RLC层SDU或者与所述第四RLC层SDU对应的PDU未传输至所述RLC层的下一层的情况下,所 述RLC层丢弃所述第四RLC层SDU和/或与所述第四RLC层SDU对应的PDU。
其中,启动所述RLC层的丢弃定时器之后,所述方法还包括:
在所述RLC层的丢弃定时器超时,且与所述第四RLC层SDU对应的PDU传输至所述RLC层的下一层的情况下,所述RLC层不执行SDU丢弃;或者,
在所述RLC层的丢弃定时器超时,且与所述第四RLC层SDU对应的PDU传输至所述RLC层的下一层的情况下,向下一跳节点发送第二指示信息。
为了实现上述目的,本公开实施例提供一种数据处理方法,包括:
网络侧设备的特定协议层基于来自所述网络侧设备的特定协议层的上一层的第一指示信息、来自上一跳节点的第二指示信息、定时器中的至少一项执行服务数据单元SDU和/或协议数据单元PDU丢弃处理,其中,所述特定协议层为适配层或者无线链路控制RLC层。
其中,所述方法还包括:
接收所述特定协议层的上一层发送的第一指示信息;或者,
接收所述网络侧设备的上一跳节点发送的第二指示信息。
其中,所述特定协议层为适配层,网络侧设备的特定协议层基于来自所述网络侧设备的特定协议层的上一层的第一指示信息执行服务数据单元SDU和/或协议数据单元PDU丢弃处理,包括:
在第一分组数据汇聚协议PDCP SDU对应的丢弃定时器超时,且第一PDCP实体确定与所述第一PDCP SDU相关的PDCP PDU传输至对应的适配层的情况下,所述适配层接收第一PDCP实体发送的第一指示信息,所述第一PDCP实体为与第一PDCP SDU对应的PDCP层中的PDCP实体;
所述适配层根据所述第一指示信息确定待丢弃的第一适配层SDU;
在所述待丢弃的第一适配层SDU或者与所述第一适配层SDU对应的PDU未传输至所述适配层的下一层的情况下,所述适配层丢弃所述第一适配层SDU和/或与所述第一适配层SDU对应的PDU。
其中,根据所述第一指示信息确定待丢弃的适配层SDU之后,所述方法还包括:
在与所述适配层SDU对应的PDU传输至所述适配层的下一层的情况下,所述适配层不执行SDU丢弃;或者,
在与所述适配层SDU对应的PDU传输至所述适配层的下一层的情况下,向下一跳节点发送用于指示执行所述特定协议层的SDU和/或PDU丢弃处理的指示信息。
其中,所述特定协议层为RLC层,网络侧设备的特定协议层基于来自所述网络侧设备的特定协议层的上一层的第一指示信息执行服务数据单元SDU和/或协议数据单元PDU丢弃处理,包括:
在第二PDCP SDU对应的丢弃定时器超时,且第二PDCP实体确定与所述第二PDCP SDU相关的PDCP PDU传输至对应的适配层的情况下,所述适配层接收第二PDCP实体发送的第三指示信息,所述第二PDCP实体为与第二PDCP SDU对应的PDCP层中的PDCP实体,所述第三指示信息用于指示所述适配层丢弃所述PDCP PDU;
所述适配层根据所述第三指示信息确定待丢弃的第二适配层SDU;
在与所述第二适配层SDU对应的PDU传输至RLC层的情况下,所述RLC层接收所述适配层发送的第一指示信息;
所述RLC层根据所述第一指示信息确定待丢弃的第一RLC层SDU;
在所述待丢弃的第一RLC层SDU或者与所述第一RLC层SDU对应的PDU未传输至所述RLC层的下一层的情况下,所述RLC层丢弃所述第一RLC层SDU和/或所述第一RLC层SDU对应的PDU。
其中,所述适配层根据所述第三指示信息确定待丢弃的第二适配层SDU之后,所述方法还包括:
在所述待丢弃的第二适配层SDU或者与所述第二适配层SDU对应的PDU未传输至RLC层的情况下,所述适配层丢弃所述第二适配层SDU和/或与所述第二适配层SDU对应的PDU。
其中,所述RLC层根据所述第一指示信息确定待丢弃的第一RLC层SDU之后,所述方法还包括:
在与所述第一RLC层SDU对应的PDU传输至所述RLC层的下一层的情况下,所述RLC层不执行SDU丢弃;或者,
在与所述第一RLC层SDU对应的PDU传输至所述RLC层的下一层的情况下,向下一跳节点发送第二指示信息。
其中,网络侧设备的特定协议层基于来自上一跳节点的第二指示信息执行服务数据单元SDU和/或协议数据单元PDU丢弃处理,包括:
所述特定协议层根据所述第二指示信息,确定待丢弃的特定协议层的SDU和/或PDU;
在所述特定协议层接收到所述上一跳节点发送的所述特定协议层的所述SDU和/或PDU的情况下,所述特定协议层丢弃所述SDU和/或PDU。
其中,所述第二指示信息包括下述中的至少一项:
远端终端的标识信息;
逻辑信道的标识信息;
端到端承载的标识信息;
待丢弃的SDU编号;
待丢弃的PDU编号。
其中,接收所述网络侧设备的上一跳节点发送的第二指示信息,包括:
通过下述信息中的一者,接收所述网络侧设备的上一跳节点发送的第二指示信息:
无线资源控制RRC信令;
RLC控制PDU;
媒体接入控制层控制单元MAC CE;
物理层控制信息。
其中,接收所述网络侧设备的上一跳节点发送的第二指示信息,包括:
接收所述网络侧设备的上一跳节点在满足发送条件的情况下、发送的第二指示信息,其中,所述发送条件为:所述网络侧设备的上一跳节点确定待丢弃的特定协议层的SDU和/或PDU,且所述特定协议层的SDU对应的PDU已经传输至所述特定协议层的下一层。
其中,网络侧设备的特定协议层基于定时器执行服务数据单元SDU和/或协议数据单元PDU丢弃处理,包括:
在所述特定协议层为适配层,且接收到PDCP层发送的第三适配层SDU 的情况下,启动所述适配层的丢弃定时器;
在所述适配层的丢弃定时器超时,且所述第三适配层SDU或者与所述第三适配层SDU对应的PDU未传输至所述适配层的下一层的情况下,所述适配层丢弃所述第三适配层SDU和/或与所述第三适配层SDU对应的PDU。
其中,启动所述适配层的丢弃定时器之后,所述方法还包括:
在所述适配层的丢弃定时器超时,且与所述第三适配层SDU对应的PDU传输至所述适配层的下一层的情况下,所述适配层不执行SDU丢弃;或者,
在所述适配层的丢弃定时器超时,且与所述第三适配层SDU对应的PDU传输至所述适配层的下一层的情况下,向所述适配层的下一层发送第四指示信息,所述第四指示信息用于指示所述适配层的下一层丢弃该层SDU和/或该层SDU对应的PDU。
其中,所述适配层的丢弃定时器的长度基于端到端承载或者RLC信道的时延要求确定。
其中,网络侧设备的特定协议层基于定时器执行服务数据单元SDU和/或协议数据单元PDU丢弃处理,包括:
在所述特定协议层为RLC层,且接收到适配层发送的第二RLC层SDU的情况下,启动所述RLC层的丢弃定时器;
在所述RLC层的丢弃定时器超时,且所述第二RLC层SDU或者与所述第二RLC层SDU对应的PDU未传输至所述RLC层的下一层的情况下,所述RLC层丢弃所述第二RLC层SDU和/或与所述第二RLC层SDU对应的PDU。
其中,启动所述RLC层的丢弃定时器之后,所述方法还包括:
在所述RLC层的丢弃定时器超时,且与所述第二RLC层SDU对应的PDU传输至所述RLC层的下一层的情况下,所述RLC层不执行SDU丢弃;或者,
在所述RLC层的丢弃定时器超时,且与所述第二RLC层SDU对应的PDU传输至所述RLC层的下一层的情况下,向下一跳节点发送第二指示信息。
为了实现上述目的,本公开实施例还提供一种远端终端,包括:存储器、收发机,处理器:存储器,用于存储计算机程序;收发机,用于在所述处理 器的控制下收发数据;处理器,用于读取所述存储器中的计算机程序并执行如上述所述的数据处理方法的步骤。
为了实现上述目的,本公开实施例还提供一种数据处理装置,包括:
第一丢弃处理单元,用于使远端终端的特定协议层基于来自所述远端终端的特定协议层的上一层的第一指示信息、来自上一跳节点的第二指示信息、定时器中的至少一项执行服务数据单元SDU和/或协议数据单元PDU丢弃处理,其中,所述特定协议层为适配层或者无线链路控制RLC层。
为了实现上述目的,本公开实施例还提供一种计算机可读存储介质,其上存储有计算机程序,该计算机程序被处理器执行时实现如上述所述的数据处理方法的步骤。
为了实现上述目的,本公开实施例还提供了一种中继终端,包括:存储器、收发机,处理器:存储器,用于存储计算机程序;收发机,用于在所述处理器的控制下收发数据;处理器,用于读取所述存储器中的计算机程序并执行如上述所述的数据处理方法的步骤。
为了实现上述目的,本公开实施例还提供了一种数据处理装置,包括:
第二丢弃处理单元,用于使中继终端的特定协议层基于来自所述中继终端的特定协议层的上一层的第一指示信息、来自上一跳节点的第二指示信息、定时器中的至少一项执行服务数据单元SDU和/或协议数据单元PDU丢弃处理,所述特定协议层为适配层或者无线链路控制RLC层。
为了实现上述目的,本公开实施例还提供一种网络侧设备,包括:存储器、收发机,处理器:存储器,用于存储计算机程序;收发机,用于在所述处理器的控制下收发数据;处理器,用于读取所述存储器中的计算机程序并执行如上述所述的数据处理方法的步骤。
为了实现上述目的,本公开实施例还提供一种数据处理装置,包括:
第三丢弃处理单元,用于使网络侧设备的特定协议层基于来自所述网络侧设备的特定协议层的上一层的第一指示信息、来自上一跳节点的第二指示信息、定时器中的至少一项执行服务数据单元SDU和/或协议数据单元PDU丢弃处理,其中,所述特定协议层为适配层或者无线链路控制RLC层。
为了实现上述目的,本公开实施例还提供一种处理器可读存储介质,所 述处理器可读存储介质存储有计算机程序,所述计算机程序用于使所述处理器执行上述所述的数据处理方法的步骤。
本公开的上述技术方案至少具有如下有益效果:
本公开实施例的上述技术方案中,通过特定设备的特定协议层基于所述特定设备的特定协议层的上一层的第一指示信息、来自上一跳节点的第二指示信息和定时器中的至少一项执行服务数据单元SDU和/或协议数据单元PDU丢弃处理,其中,所述特定设备为网络侧设备或者远端终端,所述特定协议层为适配层或者无线链路控制RLC层,如此,在中继场景下引入了适配层和多跳后,可以保证SDU丢弃能够正常进行,避免不必要的数据传输导致的拥塞问题,能够更好地保证有效数据的传输,提升整个中继系统的性能。
附图说明
图1为U2N relay场景下的用户面协议栈示意图;
图2为本公开实施例的数据处理方法的流程示意图之一;
图3为本公开实施例的数据处理方法的流程示意图之二;
图4为本公开实施例的数据处理方法的流程示意图之三;
图5为本公开实施例的数据处理方法的流程示意图之四;
图6为本公开实施例的数据处理方法的流程示意图之五;
图7为本公开实施例的特定设备的结构框图;
图8为本公开实施例的特定设备的模块示意图;
图9为本公开实施例的中继终端的结构框图;
图10为本公开实施例的中继终端的模块示意图。
具体实施方式
本公开实施例中术语“和/或”,描述关联对象的关联关系,表示可以存在三种关系,例如,A和/或B,可以表示:单独存在A,同时存在A和B,单独存在B这三种情况。字符“/”一般表示前后关联对象是一种“或”的关系。
本公开实施例中术语“多个”是指两个或两个以上,其它量词与之类似。
下面将结合本公开实施例中的附图,对本公开实施例中的技术方案进行清楚、完整地描述,显然,所描述的实施例仅仅是本公开一部分实施例,并不是全部的实施例。基于本公开中的实施例,本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例,都属于本公开保护的范围。
直接通信是指邻近的终端可以在近距离范围内通过直接通信链路(也称为Sidelink或者PC5)进行数据传输的方式。Sidelink链路对应的无线接口称为直接通信接口(也称为Sidelink接口或者PC5接口)。
为了扩展网络覆盖,一种解决方案就是引入中继(Relay)。Relay可以是一个具有中继功能的终端。中继类型主要有两种:
UE-to-Network Relay(简称U2N relay):对于U2N relay,Relay和网络之间的接口使用Uu接口,和被中继UE(也称为远端UE)之间的接口使用直接通信接口。Relay和网络之间的链路对远端UE而言可以称为BH,图1为U2N relay场景下的用户面协议栈。
UE-to-UE Relay(简称U2U relay):对于U2U relay,两个被中继UE可以通过中继UE进行数据传输。
在U2N relay和U2U relay场景下的用户面协议栈中:
PDCP是端到端的。对于U2N relay场景,端到端中的两个“端”分别指远端终端和网络侧设备;对于U2U relay场景,端到端中的两个“端”分别指通过relay通信的两个目标通信对端。
RLC是hop by hop的。其中hop by hop指的是每跳的RLC实体是对等的RLC实体。
ADAPT(adaption layer,适配层)位于PDCP实体和RLC实体之间。
UE-to-Network Relay和UE-to-UE Relay引入后,Relay场景下的协议栈相比传统通信协议栈有如下不同:
1)在PDCP实体和RLC实体之间增加了适配层;
2)PDCP层和传统通信接口一样是端到端的,但是RLC实体是hop by hop的。
因此,在中继场景下如何实现数据包丢弃是一个亟待解决的问题。
为了解决上述问题,本公开实施例提供了一种数据处理方法及装置,其 中,方法和装置是基于同一申请构思的,由于方法和装置解决问题的原理相似,因此装置和方法的实施可以相互参见,重复之处不再赘述。
如图2所示,为本公开实施例提供的数据处理方法的流程示意图,该方法包括:
步骤201:特定设备的特定协议层基于来自所述特定设备的特定协议层的上一层的第一指示信息、来自上一跳节点的第二指示信息和定时器中的至少一项执行服务数据单元SDU和/或协议数据单元PDU丢弃处理,其中,所述特定设备为网络侧设备或者远端终端,所述特定协议层为适配层或者无线链路控制RLC层。
这里,在特定设备的特定协议层基于来自所述特定设备的特定协议层的上一层的第一指示信息执行服务数据单元(Service Data Unit,SDU)和/或协议数据单元(Protocol Data Unit,PDU)丢弃处理的情况下,若该特定协议层为适配层,则其上一层为PDCP层;若该特定协议层为RLC层,则其上一层为适配层。
该情形对应于设备内部层间交互。
需要说明的是,上一跳节点为特定设备的上一跳节点。比如,在U2N relay上行传输场景下,若特定设备为网络侧设备,则上一跳节点为中继终端。又如,在U2N relay下行传输场景下,若特定设备为远端终端,则上一跳节点为中继终端。
具体的,第一指示信息和第二指示信息均用于指示该特定设备的特定协议层执行该特定协议层的SDU和/或PDU丢弃处理。
本公开实施例的数据处理方法,通过特定设备的特定协议层基于所述特定设备的特定协议层的上一层的第一指示信息、来自上一跳节点的第二指示信息和定时器中的至少一项执行服务数据单元SDU和/或协议数据单元PDU丢弃处理,其中,所述特定设备为网络侧设备或者远端终端,所述特定协议层为适配层或者无线链路控制RLC层,如此,在中继场景下引入了适配层和多跳后,可以保证SDU丢弃能够正常进行,避免不必要的数据传输导致的拥塞问题,能够更好地保证有效数据的传输,提升整个中继系统的性能。
作为一可选的实现方式,本公开实施例的方法还可包括:
接收所述特定协议层的上一层发送的第一指示信息;或者,
接收所述特定设备的上一跳节点发送的第二指示信息。
需要说明的是,若特定设备的特定协议层基于来自所述特定设备的特定协议层的上一层的第一指示信息执行SDU和/或PDU丢弃处理,则在此之前,需要执行下述步骤,即接收所述特定协议层的上一层发送的第一指示信息,以使特定设备的特定协议层能够基于该第一指示信息执行SDU和/或PDU丢弃处理。
若特定设备的特定协议层基于来自上一跳节点的第二指示信息执行SDU和/或PDU丢弃处理,则在此之前,需要执行下述步骤,即接收所述特定设备的上一跳节点发送的第二指示信息,以使特定设备的特定协议层能够基于该第二指示信息执行SDU和/或PDU丢弃处理。
作为一可选的实现方式,在所述特定协议层为适配层的情况下,本公开实施例的步骤201中,特定设备的特定协议层基于来自所述特定设备的特定协议层的上一层的第一指示信息执行服务数据单元SDU和/或协议数据单元PDU丢弃处理,包括:
在第一分组数据汇聚协议PDCP SDU对应的丢弃定时器超时,且第一PDCP实体确定与所述第一PDCP SDU相关的PDCP PDU传输至对应的适配层的情况下,所述适配层接收第一PDCP实体发送的第一指示信息,所述第一PDCP实体为与第一PDCP SDU对应的PDCP层中的PDCP实体;
需要说明的是,本实施例中,特定设备可为网络侧设备或远端终端,在该特定设备的特定协议层为适配层的情况下,该特定设备的特定协议层的上一层为PDCP层。
本步骤中,在第一PDCP SDU对应的丢弃定时器超时时,说明第一PDCP实体,即该第一PDCP SDU对应的PDCP层中的PDCP实体,需要丢弃该第一PDCP SDU以及相关的PDCP Data PDU。在与第一PDCP SDU相关的PDCP Data PDU传输至PDCP层的下一层,即适配层的情况下,第一PDCP实体向对应的适配层发送第一指示信息,也就是说,适配层接收第一PDCP实体发送的第一指示信息。
需要说明的是,该第一指示信息用于指示适配层执行适配层SDU和/或 PDU丢弃处理。
之后,所述适配层根据所述第一指示信息确定待丢弃的第一适配层SDU;
一可选地,在所述待丢弃的第一适配层SDU或者与所述第一适配层SDU对应的PDU未传输至所述适配层的下一层的情况下,所述适配层丢弃所述第一适配层SDU和/或与所述第一适配层SDU对应的PDU。
这里,适配层的下一层可为RLC层。
另一可选地,在与所述适配层SDU对应的PDU传输至所述适配层的下一层的情况下,所述适配层不执行SDU丢弃;
这里,该情形下,适配层不执行SDU丢弃,也就是说,适配层不做任何处理。
或者,又一可选地,在与所述适配层SDU对应的PDU传输至所述适配层的下一层的情况下,向下一跳节点发送第二指示信息。
这里,该情形下,特定设备向其下一跳节点发送第二指示信息,用于指示该下一跳节点执行SDU和/或PDU丢弃处理。
下面通过下述实施例一,具体说明本公开实施例的方法的实施过程。
实施例一远端终端(Remote UE)的适配层基于来自PDCP层的第一指示信息执行SDU和/或PDU丢弃
步骤A1:Remote UE从高层接收到PDCP SDU,启动对应的丢弃定时器(discardTimer);
步骤A2:PDCP SDU对应的discardTimer超时处理
若PDCP SDU对应的discardTimer超时,则该PDCP SDU对应的PDCP发送实体需要丢弃该PDCP SDU以及相关的PDCP Data PDU。若与该PDCP SDU相关的PDCP Data PDU已经递交给适配层,则该PDCP发送实体向其对应的适配层发送第一指示信息,用于指示所述适配层丢弃该PDCP Data PDU。
步骤A3:适配层根据来自PDCP层的第一指示信息进行包丢弃
适配层接收到所述第一指示信息,根据该第一指示信息确定需要丢弃的适配层SDU;之后,执行如下操作之一:
若所述适配层SDU或者所述适配层SDU对应的PDU还未递交到RLC层,则所述适配层丢弃所述适配层SDU和/或所述适配层SDU对应的PDU。
若所述适配层SDU对应的PDU已经递交到RLC层,则所述适配层不做任何处理。
若所述适配层SDU对应的PDU已经递交到RLC层,则向该Remote UE的下一跳节点发送第二指示信息。
需要说明的是,上述方法对于网络侧设备作为特定设备同样适用,原理类似,因此不再一一举例。
作为另一可选的实现方式,在所述特定协议层为RLC层的情况下,本公开实施例的步骤201中,特定设备的特定协议层基于来自所述特定设备的特定协议层的上一层的第一指示信息执行服务数据单元SDU和/或协议数据单元PDU丢弃处理,包括:
在第二PDCP SDU对应的丢弃定时器超时,且第二PDCP实体确定与所述第二PDCP SDU相关的PDCP PDU传输至对应的适配层的情况下,所述适配层接收第二PDCP实体发送的第三指示信息,所述第二PDCP实体为与第二PDCP SDU对应的PDCP层中的PDCP实体,所述第三指示信息用于指示所述适配层丢弃所述PDCP PDU;
需要说明的是,本实施例中,由于特定设备可为网络侧设备或远端终端,所以在该特定设备的特定协议层为适配层的情况下,该特定设备的特定协议层的上一层为PDCP层。
本步骤中,在第二PDCP SDU对应的丢弃定时器超时时,说明第二PDCP实体,即该第二PDCP SDU对应的PDCP层中的PDCP实体,需要丢弃该第二PDCP SDU以及相关的PDCP数据(Data)PDU。在与第二PDCP SDU相关的PDCP Data PDU传输至PDCP层的下一层,即适配层的情况下,第二PDCP实体向对应的适配层发送第一指示信息,也就是说,适配层接收第二PDCP实体发送的第三指示信息。
需要说明的是,该第三指示信息用于指示适配层丢弃与第二PDCP SDU相关的PDCP Data PDU。
之后,所述适配层根据所述第三指示信息确定待丢弃的第二适配层SDU;
一可选地,在与所述第二适配层SDU对应的PDU传输至RLC层的情况下,所述RLC层接收所述适配层发送的第一指示信息;
之后,所述RLC层根据所述第一指示信息确定待丢弃的第一RLC层SDU;
最后,在所述待丢弃的第一RLC层SDU或者与所述第一RLC层SDU对应的PDU未传输至所述RLC层的下一层的情况下,所述RLC层丢弃所述第一RLC层SDU和/或所述第一RLC层SDU对应的PDU。
这里,RLC层的下一层可为媒体接入控制(Media Access Control,MAC)层。
另一可选地,所述适配层根据所述第三指示信息确定待丢弃的第二适配层SDU之后,本公开实施例的方法还可包括:
在所述待丢弃的第二适配层SDU或者与所述第二适配层SDU对应的PDU未传输至RLC层的情况下,所述适配层丢弃所述第二适配层SDU和/或与所述第二适配层SDU对应的PDU。
本实施例中,在所述待丢弃的第二适配层SDU或者与所述第二适配层SDU对应的PDU未传输至RLC层,也就是说,所述待丢弃的第二适配层SDU或者与所述第二适配层SDU对应的PDU传输至适配层,那么由该适配层丢弃之前根据第三指示信息确定的待丢弃的所述第二适配层SDU和/或与所述第二适配层SDU对应的PDU。
又一可选地,所述RLC层根据所述第一指示信息确定待丢弃的第一RLC层SDU之后,本公开实施例的方法还包括:
在与所述第一RLC层SDU对应的PDU传输至所述RLC层的下一层的情况下,所述RLC层不执行SDU丢弃;
这里,RLC层不执行SDU丢弃,也就是,RLC层不做任何处理。
或者,在与所述第一RLC层SDU对应的PDU传输至所述RLC层的下一层的情况下,向下一跳节点发送第二指示信息。
这里,该情形下,特定设备向其下一跳节点发送第二指示信息,用于指示该下一跳节点执行SDU和/或PDU丢弃处理。
下面通过下述实施例二,具体说明本公开实施例的方法的实施过程。
实施例二Remote UE的RLC层基于来自适配层的第一指示信息执行SDU和/或PDU丢弃
步骤B1:Remote UE从高层接收到PDCP SDU,启动对应的discardTimer;
步骤B2:PDCP SDU对应的discardTimer超时处理
若PDCP SDU对应的discardTimer超时,则该PDCP SDU对应的PDCP发送实体需要丢弃该PDCP SDU以及相关的PDCP Data PDU。若与该PDCP SDU相关的PDCP Data PDU已经递交给适配层,则该PDCP发送实体向其对应的适配层发送第三指示信息,用于指示所述适配层丢弃该PDCP Data PDU。
步骤B3:适配层根据来自PDCP层的第三指示信息进行包丢弃
适配层接收到该第三指示信息,根据该第三指示信息确定需要丢弃的适配层SDU;之后,执行如下操作之一:
若所述适配层SDU或者所述适配层SDU对应的PDU还未递交到RLC层,则所述适配层丢弃所述适配层SDU和/或所述适配层SDU对应的PDU。
若所述适配层SDU对应的PDU已经递交到RLC层,则所述适配层向所述RLC层发送第一指示信息。
步骤B4:RLC层根据来自适配层的第一指示信息进行包丢弃
RLC层接收到该第一指示信息,根据该第一指示信息,确定需要丢弃的RLC层SDU;之后,执行如下操作之一:
若所述RLC层SDU或者所述RLC层SDU对应的PDU还未递交到MAC层,则所述RLC层丢弃所述RLC层SDU和/或所述RLC层SDU对应的PDU;
若所述RLC层SDU对应的PDU已经递交到MAC层,则所述RLC层不做任何处理。
若所述RLC层SDU对应的PDU已经递交到MAC层,向该Remote UE的下一跳节点发送第二指示信息。
需要说明的是,上述方法对于网络侧设备作为特定设备同样适用,原理类似,因此不再一一举例。
作为又一可选的实现方式,本公开实施例的方法步骤201中,特定设备的特定协议层基于来自上一跳节点的第二指示信息执行服务数据单元SDU和/或协议数据单元PDU丢弃处理,包括:
所述特定协议层根据所述第二指示信息,确定待丢弃的特定协议层的SDU和/或PDU;
这里,若所述特定协议层为适配层,则适配层根据来自特定设备的上一 跳节点的第二指示信息,确定待丢弃(需要丢弃)的适配层SDU和/或PDU。
在所述特定协议层接收到所述上一跳节点发送的所述特定协议层的所述SDU和/或PDU的情况下,所述特定协议层丢弃所述SDU和/或PDU。
本步骤中,特定协议层从上一跳节点接收到了需要丢弃的SDU和/或PDU,直接丢弃该SDU和/或PDU。
可选地,所述第二指示信息包括下述中的至少一项:
远端终端的标识信息;
逻辑信道的标识信息;
端到端承载的标识信息;
待丢弃的SDU编号;
待丢弃的PDU编号。
作为一可选的实现方式,接收所述特定设备的上一跳节点发送的第二指示信息,包括:
通过下述信息中的一者,接收所述特定设备的上一跳节点发送的第二指示信息:
无线资源控制(Radio Resource Control,RRC)信令;
RLC控制PDU;
媒体接入控制层控制单元(Medium Access Control Control Element,MAC CE);
物理层控制信息。
作为另一可选的实现方式,接收所述特定设备的上一跳节点发送的第二指示信息,包括:
接收所述特定设备的上一跳节点在满足发送条件的情况下、发送的第二指示信息,其中,所述发送条件为:所述特定设备的上一跳节点确定待丢弃的特定协议层的SDU和/或PDU,且所述特定协议层的SDU对应的PDU已经传输至所述特定协议层的下一层。
本实现方式中,在特定设备的上一跳节点满足上述发送条件时,该上一跳节点向特定设备发送第二指示信息。
作为一可选的实现方式,本公开实施例的方法步骤201中,特定设备的 特定协议层基于定时器执行服务数据单元SDU和/或协议数据单元PDU丢弃处理,包括:
在所述特定协议层为适配层,且接收到PDCP层发送的第三适配层SDU的情况下,启动所述适配层的丢弃定时器;
这里,在适配层引入丢弃定时器,当该适配层接收到PDCP层发送的第三适配层SDU时,启动该丢弃定时器。
一可选地,在所述适配层的丢弃定时器超时,且所述第三适配层SDU或者与所述第三适配层SDU对应的PDU未传输至所述适配层的下一层的情况下,所述适配层丢弃所述第三适配层SDU和/或与所述第三适配层SDU对应的PDU。
另一可选地,在所述适配层的丢弃定时器超时,且与所述第三适配层SDU对应的PDU传输至所述适配层的下一层的情况下,所述适配层不执行SDU丢弃;
这里,适配层不执行SDU丢弃,也就是,适配层不做任何处理。
或者,又一可选地,在所述适配层的丢弃定时器超时,且与所述第三适配层SDU对应的PDU传输至所述适配层的下一层的情况下,向所述适配层的下一层发送第四指示信息,所述第四指示信息用于指示所述适配层的下一层丢弃该层SDU和/或该层SDU对应的PDU。
这里,适配层的下一层可为RLC层。具体的,在所述适配层的丢弃定时器超时,且与所述第三适配层SDU对应的PDU传输至RLC层的情况下,向RLC层发送第四指示信息,该第四指示信息用于指示该RLC层丢弃RLC SDU和/或该RLC SDU对应的PDU。
可选地,所述适配层的丢弃定时器的长度基于端到端承载或者RLC信道的时延要求确定。
下面通过下述实施例,具体说明本公开实施例的方法的实施过程。
实施例三Remote UE的适配层基于定时器执行SDU和/或PDU丢弃
步骤F1:在适配层引入一个适配层的discardTimer,基于每个适配层SDU维护该timer。
Remote UE的适配层从高层(PDCP层)接收到适配层SDU,启动对应 的discardTimer。其中所述discardTimer长度和所述数据包时延要求相关。
步骤F2:适配层SDU对应的discardTimer超时处理
若适配层SDU对应的discardTimer超时,则所述适配层需要丢弃所述适配层SDU以及相关的适配层PDU。
如果适配层SDU相关的适配层PDU已经递交给RLC层,则还可以执行如下操作之一:
不执行任何操作;
Remote UE的适配层向该Remote UE的RLC层发送第四指示信息,用于指示该RCL层丢弃所述适配层PDU;
Remote UE的适配层向Relay UE(下一跳节点)发送第二指示信息,用于指示Relay UE的适配层从Remote UE接收到该第二指示信息后,根据该第二指示信息确定需要丢弃的适配层SDU和/或PDU。
需要说明的是,上述方法对于网络侧设备同样适用,原理类似,因此不再一一举例。
作为另一可选的实现方式,本公开实施例的方法步骤201中,特定设备的特定协议层基于定时器执行服务数据单元SDU和/或协议数据单元PDU丢弃处理,包括:
在所述特定协议层为RLC层,且接收到适配层发送的第二RLC层SDU的情况下,启动所述RLC层的丢弃定时器;
这里,在RLC层引入丢弃定时器,当该RLC层接收到适配层发送的第二RLC层SDU时,启动该丢弃定时器。
一可选地,在所述RLC层的丢弃定时器超时,且所述第二RLC层SDU或者与所述第二RLC层SDU对应的PDU未传输至所述RLC层的下一层的情况下,所述RLC层丢弃所述第二RLC层SDU和/或与所述第二RLC层SDU对应的PDU。
另一可选地,在所述RLC层的丢弃定时器超时,且与所述第二RLC层SDU对应的PDU传输至所述RLC层的下一层的情况下,所述RLC层不执行SDU丢弃;
这里,RLC层不执行SDU丢弃,也就是RLC层不做任何处理。
或者,又一可选地,在所述RLC层的丢弃定时器超时,且与所述第二RLC层SDU对应的PDU传输至所述RLC层的下一层的情况下,向下一跳节点发送第二指示信息。
实施例四Remote UE的RLC层基于定时器执行SDU和/或PDU丢弃
步骤G1:在RLC层引入一个适配层的discardTimer,基于每个RLC层SDU维护该定时器(timer)。
Remote UE的RLC层从高层(PDCP层或者适配层)接收到SDU,启动对应的discardTimer。其中所述discardTimer长度和所述数据包时延要求相关。
步骤G2:RLC层SDU对应的discardTimer超时处理
若RLC层SDU对应的discardTimer超时,则所述RLC层需要丢弃所述RLC层SDU以及相关的RLC层PDU。
如果RLC层SDU相关的RLC层PDU已经递交给MAC层,则还可以执行如下操作之一:
不执行任何操作;
Remote UE的RLC层向Relay UE(下一跳节点)发送第二指示信息,该第二指示信息用于指示Relay UE从Remote UE接收到第二指示信息,根据该第二指示信息确定需要丢弃的RLC层SDU和/或PDU。
需要说明的是,上述方法对于网络侧设备作为特定设备同样适用,原理类似,因此不再一一举例。
本公开实施例的数据处理方法,通过特定设备的特定协议层基于所述特定设备的特定协议层的上一层的第一指示信息、来自上一跳节点的第二指示信息和定时器中的至少一项执行服务数据单元SDU和/或协议数据单元PDU丢弃处理,其中,所述特定设备为网络侧设备或者远端终端,所述特定协议层为适配层或者无线链路控制RLC层,如此,在中继场景下引入了适配层和多跳后,可以保证SDU丢弃能够正常进行,避免不必要的数据传输导致的拥塞问题,能够更好地保证有效数据的传输,提升整个中继系统的性能。
如图3所示,为本公开实施例提供的数据处理方法的流程示意图,该方法应用于中继终端,具体可包括:
步骤301:中继终端的特定协议层基于来自所述中继终端的特定协议层 的上一层的第一指示信息、来自上一跳节点的第二指示信息和定时器中的至少一项执行服务数据单元SDU和/或协议数据单元PDU丢弃处理,所述特定协议层为适配层或者无线链路控制RLC层。
这里,在中继终端Relay UE的特定协议层基于来自该中继终端的特定协议层的上一层的第一指示信息执行SDU和/或PDU丢弃处理的情况下,该特定协议层为RLC层,即其上一层为适配层。该情形对应于设备内部层间交互。
需要说明的是,上一跳节点为中继终端的上一跳节点。比如,在U2N relay上行传输场景下,上一跳节点为远端终端。又如,在U2N relay下行传输场景下,上一跳节点为网络侧设备。再如,在U2U relay场景下,上一跳节点为远端终端。
这里,第一指示信息和第二指示信息均用于指示该中继终端的特定协议层执行该层的SDU和/或PDU丢弃处理。
本公开实施例的数据处理方法,通过中继终端的特定协议层基于来自所述中继终端的特定协议层的上一层的第一指示信息、来自上一跳节点的第二指示信息和定时器中的至少一项执行服务数据单元SDU和/或协议数据单元PDU丢弃处理,所述特定协议层为适配层或者无线链路控制RLC层,如此,在中继场景下引入了适配层和多跳后,可以保证SDU丢弃能够正常进行,避免不必要的数据传输导致的拥塞问题,能够更好地保证有效数据的传输,提升整个中继系统的性能。
作为一可选的实现方式,本公开实施例的方法还可包括:
接收所述中继终端的上一跳节点发送的第二指示信息。
需要说明的,若中继终端的特定协议层基于来自该中继终端的上一跳节点的第二指示信息执行SDU和/或PDU丢弃处理,则在此之前,需要执行下述步骤,即接收中继终端的上一跳节点发送的第二指示信息,以使中继终端的特定协议层能够基于该第二指示信息执行SDU和/或PDU丢弃处理。
作为一可选的实现方式,本公开实施例的步骤301中,中继终端的特定协议层基于来自所述特定设备的特定协议层的上一层的第一指示信息执行服务数据单元SDU和/或协议数据单元PDU丢弃处理,包括:
在所述特定协议层为RLC层,且接收到适配层发送的第一指示信息的情 况下,所述RLC层根据所述第一指示信息确定待丢弃的第三RLC层SDU;
这里,触发适配层发送第一指示信息的发送条件可为:适配层的丢弃定时器超时,且对应需要丢弃的适配层SDU传输至RLC层。需要说明的是,适配层的丢弃定时器的启动,可以是在中继终端接收到其上一跳节点发送的适配层SDU时启动。
一可选地,在所述待丢弃的第三RLC层SDU或者与所述第三RLC层SDU对应的PDU未传输至所述RLC层的下一层的情况下,所述RLC层丢弃所述第三RLC层SDU和/或所述第三RLC层SDU对应的PDU。
这里,RLC层的下一层可为MAC层。
另一可选地,所述RLC层根据所述第一指示信息确定待丢弃的第三RLC层SDU之后,本公开实施例的方法还包括:
在与所述第三RLC层SDU对应的PDU传输至所述RLC层的下一层的情况下,所述RLC层不执行SDU丢弃;
这里,RLC层不执行SDU丢弃,也就是,RLC层不做任何处理。
或者,在与所述第三RLC层SDU对应的PDU传输至所述RLC层的下一层的情况下,向下一跳节点发送第二指示信息。
这里,该情形下,中继终端向其下一跳节点发送第二指示信息,用于指示该下一跳节点执行SDU和/或PDU丢弃处理。
作为另一可选的实现方式,本公开实施例的方法步骤301中,中继终端的特定协议层基于来自上一跳节点的第二指示信息执行服务数据单元SDU和/或协议数据单元PDU丢弃处理,包括:
所述特定协议层根据所述第二指示信息,确定待丢弃的特定协议层的SDU和/或PDU;
这里,该特定协议层为适配层或RLC层。
这里,若所述特定协议层为适配层,则适配层根据来自中继终端的上一跳节点的第二指示信息,确定待丢弃(需要丢弃)的适配层SDU和/或PDU。
若所述特定协议层为RLC层,则RLC层根据来自中继终端的上一跳节点的第二指示信息,确定待丢弃(需要丢弃)的RLC层SDU和/或PDU。
在所述特定协议层接收到所述中继终端的上一跳节点发送的所述特定协 议层的所述SDU和/或PDU的情况下,所述特定协议层丢弃所述SDU和/或PDU。
本步骤中,特定协议层从上一跳节点接收到了需要丢弃的SDU和/或PDU,直接丢弃该SDU和/或PDU。
可选地,所述第二指示信息包括下述中的至少一项:
远端终端的标识信息;
逻辑信道的标识信息;
端到端承载的标识信息;
待丢弃的SDU编号;
待丢弃的PDU编号。
作为一可选的实现方式,接收所述中继终端的上一跳节点发送的第二指示信息,包括:
通过下述信息中的一者,接收所述中继终端的上一跳节点发送的第二指示信息:
无线资源控制RRC信令;
RLC控制PDU;
媒体接入控制层控制单元MAC CE;
物理层控制信息。
作为另一可选的实现方式,接收所述中继终端的上一跳节点发送的第二指示信息,包括:
接收所述中继终端的上一跳节点在满足发送条件的情况下、发送的第二指示信息,其中,所述发送条件为:所述中继终端的上一跳节点确定待丢弃的特定协议层的SDU和/或PDU,且所述特定协议层的SDU对应的PDU已经传输至所述特定协议层的下一层。
本实现方式中,在中继终端的上一跳节点满足上述发送条件时,该上一跳节点向中继终端发送第二指示信息。
下面通过下述实施例,具体说明本公开实施例的方法的实施过程。
实施例五Relay UE的适配层基于来自上一跳节点的第二指示信息执行SDU和/或PDU丢弃(U2N relay下行传输),参见图4。
步骤C1:网络侧设备进行包丢弃处理
网络侧设备从高层PDCP SDU,启动对应的discardTimer。
之后,若PDCP SDU对应的discardTimer超时,则该PDCP SDU对应的PDCP发送实体需要丢弃该PDCP SDU以及相关的PDCP Data PDU。若与该PDCP SDU相关的PDCP Data PDU已经递交给适配层,则该PDCP发送实体向其对应的适配层发送第三指示信息,用于指示所述适配层丢弃该PDCP Data PDU。
网络侧设备的适配层接收到该第三指示信息,根据该第三指示信息确定需要丢弃的适配层SDU;之后,执行如下操作之一:
若所述适配层SDU或者所述适配层SDU对应的PDU还未递交到RLC层,则所述适配层丢弃所述适配层SDU和/或所述适配层SDU对应的PDU。
若所述适配层SDU对应的PDU已经递交到RLC层,则网络侧设备确定需要向Relay UE发送第二指示信息。
步骤C2:网络侧设备向Relay UE发送第二指示信息;
可选地,所述第二指示信息包括下述中的至少一项:
远端终端的标识信息;
逻辑信道的标识信息;
端到端承载的标识信息;
待丢弃的SDU编号;
待丢弃的PDU编号。
这里,远端终端的标识信息可以是Relay UE或者网络侧设备为远端终端分配的,也可以是远端终端的唯一标识,比如5G S-临时移动签约标识(5G S-Temporary Mobile Subscription Identifier,5G-S-TMSI)。
可选地,第二指示信息的传输方式可以是下述之一:
RRC信令,比如PC5-RRC或者Uu RRC信令;
RLC控制PDU;
MAC CE;
物理层控制信息,比如SCI或者PDCCH。
步骤C3:Relay UE执行包丢弃处理
Relay UE的适配层从网络侧设备接收到第二指示信息,根据该第二指示信息确定需要丢弃的适配层SDU和/或PDU。若Relay UE的适配层从网络侧设备接收到了所述SDU和/或PDU,则直接丢弃,不需要再转发给Remote UE。
步骤C4:Relay UE向Remote UE转发来自网络侧设备的数据包。
需要说明的是,Relay UE将经过来自网络侧设备且经过步骤C3处理后的数据包转发给Remote UE。
实施例六Relay UE的适配层基于来自上一跳节点的第二指示信息执行SDU和/或PDU丢弃(U2N relay上行传输),参见图5。
步骤D1:Remote UE进行包丢弃处理
Remote UE从高层PDCP SDU,启动对应的discardTimer。
之后,若PDCP SDU对应的discardTimer超时,则该PDCP SDU对应的PDCP发送实体需要丢弃该PDCP SDU以及相关的PDCP Data PDU。若与该PDCP SDU相关的PDCP Data PDU已经递交给适配层,则该PDCP发送实体向其对应的适配层发送第三指示信息,用于指示所述适配层丢弃该PDCP Data PDU。
Remote UE的适配层接收到该第三指示信息,根据该第三指示信息确定需要丢弃的适配层SDU;之后,执行如下操作之一:
若所述适配层SDU或者所述适配层SDU对应的PDU还未递交到RLC层,则所述适配层丢弃所述适配层SDU和/或所述适配层SDU对应的PDU。
若所述适配层SDU对应的PDU已经递交到RLC层,则Remote UE确定需要向Relay UE发送第二指示信息。
步骤D2:Remote UE向Relay UE发送第二指示信息;
可选地,所述第二指示信息包括下述中的至少一项:
远端终端的标识信息;
逻辑信道的标识信息;
端到端承载的标识信息;
待丢弃的SDU编号;
待丢弃的PDU编号。
这里,远端终端的标识信息可以是Relay UE或者网络侧设备为远端终端 分配的,也可以是远端终端的唯一标识,比如5G-S-TMSI。
可选地,第二指示信息的传输方式可以是下述之一:
RRC信令,比如PC5-RRC或者Uu RRC信令;
RLC控制PDU;
MAC CE;
物理层控制信息,比如SCI或者PDCCH。
步骤D3:Relay UE执行包丢弃处理
Relay UE的适配层从Remote UE接收到第二指示信息,根据该第二指示信息确定需要丢弃的适配层SDU和/或PDU。若Relay UE的适配层从Remote UE接收到了所述SDU和/或PDU,则直接丢弃,不需要再转发给网络侧设备。
步骤D4:Relay UE向网络侧设备转发来自Remote UE的数据包。
需要说明的是,Relay UE将经过来自Remote UE且经过步骤D3处理后的数据包转发给网络侧设备。
实施例七Relay UE的适配层或RLC层基于来自上一跳节点的第二指示信息执行SDU和/或PDU丢弃(U2N relay上行传输),可参考图5。
步骤L1:Remote UE进行包丢弃处理
Remote UE若开启了PDCP重复(duplication)传输,若路径1传输的PDCP PDU被RLC层确认成功传输,则PDCP实体指示在重复传输的路径2上删除与所述PDCP PDU对应的数据包。
若需要删除的数据包仍处在PDCP层,则直接删除;若已递交给适配层,则该PDCP PDU对应的PDCP发送实体向其对应的适配层发送第三指示信息,所述指示所述适配层丢弃该PDCP Data PDU。
Remote UE的适配层接收到该第三指示信息,根据该第三指示信息确定需要丢弃的适配层SDU;之后,执行如下操作之一:
若所述适配层SDU或者所述适配层SDU对应的PDU还未递交到RLC层,则所述适配层丢弃所述适配层SDU和/或所述适配层SDU对应的PDU。
若所述适配层SDU对应的PDU已经递交到RLC层,则Remote UE确定需要向Relay UE发送第二指示信息。
步骤L2:Remote UE向Relay UE发送第二指示信息;
可选地,所述第二指示信息包括下述中的至少一项:
远端终端的标识信息;
逻辑信道的标识信息;
端到端承载的标识信息;
待丢弃的SDU编号(比如RLC或适配层SDU编号);
待丢弃的PDU编号(比如RLC或适配层PDU编号)。
这里,远端终端的标识信息可以是Relay UE或者网络侧设备为远端终端分配的,也可以是远端终端的唯一标识,比如5G-S-TMSI。
可选地,第二指示信息的传输方式可以是下述之一:
RRC信令,比如PC5-RRC或者Uu RRC信令;
RLC控制PDU;
MAC CE;
物理层控制信息,比如SCI或者PDCCH。
步骤L3:Relay UE执行包丢弃处理
Relay UE的适配层从Remote UE接收到第二指示信息,根据该第二指示信息确定需要丢弃的适配层或RLC层SDU和/或PDU。若Relay UE的适配层或RLC层从Remote UE接收到了所述SDU和/或PDU,则直接丢弃,不需要再转发给网络侧设备。
步骤L4:Relay UE向网络侧设备转发来自Remote UE的数据包。
需要说明的是,Relay UE将经过来自Remote UE且经过步骤L3处理后的数据包转发给网络侧设备。
实施例八Relay UE的适配层基于来自上一跳节点的第二指示信息执行SDU和/或PDU丢弃(U2U relay),参见图6。
步骤E1:Remote UE2进行包丢弃处理
Remote UE2从高层PDCP SDU,启动对应的discardTimer。
之后,若PDCP SDU对应的discardTimer超时,则该PDCP SDU对应的PDCP发送实体需要丢弃该PDCP SDU以及相关的PDCP Data PDU。若与该PDCP SDU相关的PDCP Data PDU已经递交给适配层,则该PDCP发送实体向其对应的适配层发送第三指示信息,用于指示所述适配层丢弃该PDCP  Data PDU。
Remote UE2的适配层接收到该第三指示信息,根据该第三指示信息确定需要丢弃的适配层SDU;之后,执行如下操作之一:
若所述适配层SDU或者所述适配层SDU对应的PDU还未递交到RLC层,则所述适配层丢弃所述适配层SDU和/或所述适配层SDU对应的PDU。
若所述适配层SDU对应的PDU已经递交到RLC层,则Remote UE2确定向Relay UE发送第二指示信息。
步骤E2:Remote UE2向Relay UE发送第二指示信息;
可选地,所述第二指示信息包括下述中的至少一项:
Remote UE1的标识信息;
逻辑信道的标识信息;
端到端承载的标识信息;
待丢弃的SDU编号;
待丢弃的PDU编号。
这里,Remote UE1的标识信息可以是Relay UE或者Remote UE2为远端终端分配的,也可以是Remote UE1的唯一标识,比如5G-S-TMSI。
可选地,第二指示信息的传输方式可以是下述之一:
RRC信令,比如PC5-RRC或者Uu RRC信令;
RLC控制PDU;
MAC CE;
物理层控制信息,比如SCI或者PDCCH。
步骤E3:Relay UE执行包丢弃处理
Relay UE的适配层从Remote UE2接收到第二指示信息,根据该第二指示信息确定需要丢弃的适配层SDU和/或PDU。若Relay UE的适配层从Remote UE2接收到了所述SDU和/或PDU,则直接丢弃,不需要再转发给网络侧设备。
步骤E4:Relay UE向Remote UE1转发来自Remote UE2的数据包。
需要说明的是,Relay UE将经过来自Remote UE2且经过步骤D3处理后的数据包转发给Remote UE1。
作为又一可选的实现方式,中继终端的特定协议层基于定时器执行服务数据单元SDU和/或协议数据单元PDU丢弃处理,包括:
在所述特定协议层为适配层,且接收到中继终端的上一跳节点发送的第四适配层SDU的情况下,启动所述适配层的丢弃定时器;
这里,在适配层引入丢弃定时器,当适配层接收到中继终端的上一跳节点发送的第四适配层SDU时,启动所述适配层的丢弃定时器。
一可选地,在所述适配层的丢弃定时器超时,且所述第四适配层SDU或者与所述第四适配层SDU对应的PDU未传输至所述适配层的下一层的情况下,所述适配层丢弃所述第四适配层SDU和/或与所述第四适配层SDU对应的PDU。
另一可选地,在所述适配层的丢弃定时器超时,且与所述第四适配层SDU对应的PDU传输至所述适配层的下一层的情况下,所述适配层不执行SDU丢弃;
这里,适配层不执行SDU丢弃,也就是,适配层不做任何处理。
或者,又一可选地,在所述适配层的丢弃定时器超时,且与所述第四适配层SDU对应的PDU传输至所述适配层的下一层的情况下,向所述适配层的下一层发送第五指示信息,所述第五指示信息用于指示所述适配层的下一层丢弃该层SDU和/或该层SDU对应的PDU。
这里,适配层的下一层可为RLC层。具体的,在所述适配层的丢弃定时器超时,且与所述第四适配层SDU对应的PDU传输至RLC层的情况下,向RLC层发送第五指示信息,该第五指示信息用于指示该RLC层丢弃RLC SDU和/或该RLC SDU对应的PDU。
可选地,所述适配层的丢弃定时器的长度基于端到端承载或者RLC信道的时延要求确定。
作为再一可选的实现方式,本公开实施例的方法步骤301中,中继终端的特定协议层基于定时器执行服务数据单元SDU和/或协议数据单元PDU丢弃处理,包括:
在所述特定协议层为RLC层,且接收到适配层发送的第四RLC层SDU的情况下,启动所述RLC层的丢弃定时器;
一可选地,在所述RLC层的丢弃定时器超时,且所述第四RLC层SDU或者与所述第四RLC层SDU对应的PDU未传输至所述RLC层的下一层的情况下,所述RLC层丢弃所述第四RLC层SDU和/或与所述第四RLC层SDU对应的PDU。
另一可选地,在所述RLC层的丢弃定时器超时,且与所述第四RLC层SDU对应的PDU传输至所述RLC层的下一层的情况下,所述RLC层不执行SDU丢弃;
这里,RLC层不执行SDU丢弃,也就是,RLC层不做任何处理。
或者,又一可选地,在所述RLC层的丢弃定时器超时,且与所述第四RLC层SDU对应的PDU传输至所述RLC层的下一层的情况下,向下一跳节点发送第二指示信息。
本公开实施例的数据处理方法,通过中继终端的特定协议层基于来自所述中继终端的特定协议层的上一层的第一指示信息、来自上一跳节点的第二指示信息和定时器中的至少一项执行服务数据单元SDU和/或协议数据单元PDU丢弃处理,所述特定协议层为适配层或者无线链路控制RLC层,如此,在中继场景下引入了适配层和多跳后,可以保证SDU丢弃能够正常进行,避免不必要的数据传输导致的拥塞问题,能够更好地保证有效数据的传输,提升整个中继系统的性能。
如图7所示,本公开实施例还提供了一种特定设备,包括:存储器720、收发机700,处理器710:存储器720,用于存储程序指令;收发机700,用于在所述处理器710的控制下收发数据;处理器710,用于读取所述存储器720中的程序指令并执行以下操作:
使特定设备的特定协议层基于来自所述特定设备的特定协议层的上一层的第一指示信息、来自上一跳节点的第二指示信息和定时器中的至少一项执行服务数据单元SDU和/或协议数据单元PDU丢弃处理,其中,所述特定设备为网络侧设备或者远端终端,所述特定协议层为适配层或者无线链路控制RLC层。
其中,在图7中,在所述特定设备为网络侧设备的情况下,总线架构可以包括任意数量的互联的总线和桥,具体由处理器710代表的一个或多个处 理器和存储器720代表的存储器的各种电路链接在一起。总线架构还可以将诸如外围设备、稳压器和功率管理电路等之类的各种其他电路链接在一起,这些都是本领域所公知的,因此,本文不再对其进行进一步描述。总线接口提供接口。收发机700可以是多个元件,即包括发送机和接收机,提供用于在传输介质上与各种其他装置通信的单元,这些传输介质包括无线信道、有线信道、光缆等传输介质。处理器710负责管理总线架构和通常的处理,存储器720可以存储处理器710在执行操作时所使用的数据。
处理器710可以是中央处理器(CPU)、专用集成电路(Application Specific Integrated Circuit,ASIC)、现场可编程门阵列(Field-Programmable Gate Array,FPGA)或复杂可编程逻辑器件(Complex Programmable Logic Device,CPLD),处理器也可以采用多核架构。
在所述特定设备为远端终端的情况下,总线架构可以包括任意数量的互联的总线和桥,具体由处理器710代表的一个或多个处理器和存储器720代表的存储器的各种电路链接在一起。总线架构还可以将诸如外围设备、稳压器和功率管理电路等之类的各种其他电路链接在一起,这些都是本领域所公知的,因此,本文不再对其进行进一步描述。总线接口提供接口。收发机700可以是多个元件,即包括发送机和接收机,提供用于在传输介质上与各种其他装置通信的单元,这些传输介质包括,这些传输介质包括无线信道、有线信道、光缆等传输介质。针对不同的用户设备,用户接口730还可以是能够外接内接需要设备的接口,连接的设备包括但不限于小键盘、显示器、扬声器、麦克风、操纵杆等。
处理器710负责管理总线架构和通常的处理,存储器720可以存储处理器710在执行操作时所使用的数据。
可选地,处理器710可以是中央处理器(CPU)、专用集成电路(Application Specific Integrated Circuit,ASIC)、现场可编程门阵列(Field-Programmable Gate Array,FPGA)或复杂可编程逻辑器件(Complex Programmable Logic Device,CPLD),处理器710也可以采用多核架构。
处理器710通过调用存储器存储的程序指令,用于按照获得的可执行指令执行本公开实施例提供的任一所述方法。处理器710与存储器720也可以 物理上分开布置。
可选地,所述收发机700还用于:
接收所述特定协议层的上一层发送的第一指示信息;或者,
接收所述特定设备的上一跳节点发送的第二指示信息。
可选地,所述处理器710还用于:
在所述特定协议层为适配层,第一分组数据汇聚协议PDCP SDU对应的丢弃定时器超时,且第一PDCP实体确定与所述第一PDCP SDU相关的PDCP协议数据单元PDU传输至对应的适配层的情况下,使所述适配层通过收发机接收第一PDCP实体发送的第一指示信息,所述第一PDCP实体为与第一PDCP SDU对应的PDCP层中的PDCP实体;
根据所述第一指示信息确定待丢弃的第一适配层SDU;
在所述待丢弃的第一适配层SDU或者与所述第一适配层SDU对应的PDU未传输至所述适配层的下一层的情况下,丢弃所述第一适配层SDU和/或与所述第一适配层SDU对应的PDU。
可选地,所述处理器710还用于:
在与所述适配层SDU对应的PDU传输至所述适配层的下一层的情况下,使所述适配层不执行SDU丢弃;或者,
在与所述适配层SDU对应的PDU传输至所述适配层的下一层的情况下,通过收发机向下一跳节点发送第二指示信息。
可选地,所述处理器710还用于:
在所述特定协议层为RLC层,第二PDCP SDU对应的丢弃定时器超时,且第二PDCP实体确定与所述第二PDCP SDU相关的PDCP PDU传输至对应的适配层的情况下,使所述适配层接收第二PDCP实体发送的第三指示信息,所述第二PDCP实体为与第二PDCP SDU对应的PDCP层中的PDCP实体,所述第三指示信息用于指示所述适配层丢弃所述PDCP PDU;
所述适配层根据所述第三指示信息确定待丢弃的第二适配层SDU;
在与所述第二适配层SDU对应的PDU传输至RLC层的情况下,使所述RLC层接收所述适配层发送的第一指示信息;
所述RLC层根据所述第一指示信息确定待丢弃的第一RLC层SDU;
在所述待丢弃的第一RLC层SDU或者与所述第一RLC层SDU对应的PDU未传输至所述RLC层的下一层的情况下,所述RLC层丢弃所述第一RLC层SDU和/或所述第一RLC层SDU对应的PDU。
可选地,所述处理器710还用于:
在所述待丢弃的第二适配层SDU或者与所述第二适配层SDU对应的PDU未传输至RLC层的情况下,使所述适配层丢弃所述第二适配层SDU和/或与所述第二适配层SDU对应的PDU。
可选地,所述处理器610还用于:
在与所述第一RLC层SDU对应的PDU传输至所述RLC层的下一层的情况下,使所述RLC层不执行SDU丢弃;或者,
在与所述第一RLC层SDU对应的PDU传输至所述RLC层的下一层的情况下,通过所述收发机向下一跳节点发送第二指示信息。
可选地,所述处理器710还用于:
使所述特定协议层根据所述第二指示信息,确定待丢弃的特定协议层的SDU和/或PDU;
在所述特定协议层接收到所述上一跳节点发送的所述特定协议层的所述SDU和/或PDU的情况下,使所述特定协议层丢弃所述SDU和/或PDU。
可选地,所述第二指示信息包括下述中的至少一项:
远端终端的标识信息;
逻辑信道的标识信息;
端到端承载的标识信息;
待丢弃的SDU编号;
待丢弃的PDU编号。
可选地,所述收发机700还用于:
通过下述信息中的一者,接收所述特定设备的上一跳节点发送的第二指示信息:
无线资源控制RRC信令;
RLC控制PDU;
媒体接入控制层控制单元MAC CE;
物理层控制信息。
可选地,所述收发机700还用于:
接收所述特定设备的上一跳节点在满足发送条件的情况下、发送的第二指示信息,其中,所述发送条件为:所述特定设备的上一跳节点确定待丢弃的特定协议层的SDU和/或PDU,且所述特定协议层的SDU对应的PDU已经传输至所述特定协议层的下一层。
可选地,所述处理器710还用于:
在所述特定协议层为适配层,且接收到PDCP层发送的第三适配层SDU的情况下,启动所述适配层的丢弃定时器;
在所述适配层的丢弃定时器超时,且所述第三适配层SDU或者与所述第三适配层SDU对应的PDU未传输至所述适配层的下一层的情况下,使所述适配层丢弃所述第三适配层SDU和/或与所述第三适配层SDU对应的PDU。
可选地,所述处理器710还用于:
在所述适配层的丢弃定时器超时,且与所述第三适配层SDU对应的PDU传输至所述适配层的下一层的情况下,使所述适配层不执行SDU丢弃;或者,
在所述适配层的丢弃定时器超时,且与所述第三适配层SDU对应的PDU传输至所述适配层的下一层的情况下,通过收发机向所述适配层的下一层发送第四指示信息,所述第四指示信息用于指示所述适配层的下一层丢弃该层SDU和/或该层SDU对应的PDU。
可选地,所述适配层的丢弃定时器的长度基于端到端承载或者RLC信道的时延要求确定。
可选地,所述处理器710还用于:
在所述特定协议层为RLC层,且接收到适配层发送的第二RLC层SDU的情况下,启动所述RLC层的丢弃定时器;
在所述RLC层的丢弃定时器超时,且所述第二RLC层SDU或者与所述第二RLC层SDU对应的PDU未传输至所述RLC层的下一层的情况下,使所述RLC层丢弃所述第二RLC层SDU和/或与所述第二RLC层SDU对应的PDU。
可选地,所述处理器710还用于:
在所述RLC层的丢弃定时器超时,且与所述第二RLC层SDU对应的PDU传输至所述RLC层的下一层的情况下,使所述RLC层不执行SDU丢弃;或者,
在所述RLC层的丢弃定时器超时,且与所述第二RLC层SDU对应的PDU传输至所述RLC层的下一层的情况下,通过收发机向下一跳节点发送第二指示信息。
本公开实施例的特定设备,通过特定设备的特定协议层基于所述特定设备的特定协议层的上一层的第一指示信息、来自上一跳节点的第二指示信息和定时器中的至少一项执行服务数据单元SDU和/或协议数据单元PDU丢弃处理,其中,所述特定设备为网络侧设备或者远端终端,所述特定协议层为适配层或者无线链路控制RLC层,如此,在中继场景下引入了适配层和多跳后,可以保证SDU丢弃能够正常进行,避免不必要的数据传输导致的拥塞问题,能够更好地保证有效数据的传输,提升整个中继系统的性能。
如图8所示,本公开实施例还提供了一种数据处理装置,包括:
第一丢弃处理单元801,用于使特定设备的特定协议层基于来自所述特定设备的特定协议层的上一层的第一指示信息、来自上一跳节点的第二指示信息和定时器中的至少一项执行服务数据单元SDU和/或协议数据单元PDU丢弃处理,其中,所述特定设备为网络侧设备或者远端终端,所述特定协议层为适配层或者无线链路控制RLC层。
可选地,本公开实施例的装置还可包括:
第一接收单元,用于接收所述特定协议层的上一层发送的第一指示信息;或者,
第二接收单元,用于接收所述特定设备的上一跳节点发送的第二指示信息。
可选地,第一丢弃处理单元801具体用于:
在所述特定协议层为适配层,第一分组数据汇聚协议PDCP SDU对应的丢弃定时器超时,且第一PDCP实体确定与所述第一PDCP SDU相关的PDCP协议数据单元PDU传输至对应的适配层的情况下,使所述适配层接收第一PDCP实体发送的第一指示信息,所述第一PDCP实体为与第一PDCP SDU 对应的PDCP层中的PDCP实体;
所述适配层根据所述第一指示信息确定待丢弃的第一适配层SDU;
在所述待丢弃的第一适配层SDU或者与所述第一适配层SDU对应的PDU未传输至所述适配层的下一层的情况下,所述适配层丢弃所述第一适配层SDU和/或与所述第一适配层SDU对应的PDU。
可选地,本公开实施例的装置还可包括:
第一处理单元,用于在与所述适配层SDU对应的PDU传输至所述适配层的下一层的情况下,所述适配层不执行SDU丢弃;或者,
第一发送单元,用于在与所述适配层SDU对应的PDU传输至所述适配层的下一层的情况下,向下一跳节点发送第二指示信息。
可选地,第一丢弃处理单元801具体用于:
在所述特定协议层为RLC层,第二PDCP SDU对应的丢弃定时器超时,且第二PDCP实体确定与所述第二PDCP SDU相关的PDCP PDU传输至对应的适配层的情况下,使所述适配层接收第二PDCP实体发送的第三指示信息,所述第二PDCP实体为与第二PDCP SDU对应的PDCP层中的PDCP实体,所述第三指示信息用于指示所述适配层丢弃所述PDCP PDU;
所述适配层根据所述第三指示信息确定待丢弃的第二适配层SDU;
在与所述第二适配层SDU对应的PDU传输至RLC层的情况下,使所述RLC层接收所述适配层发送的第一指示信息;
所述RLC层根据所述第一指示信息确定待丢弃的第一RLC层SDU;
在所述待丢弃的第一RLC层SDU或者与所述第一RLC层SDU对应的PDU未传输至所述RLC层的下一层的情况下,所述RLC层丢弃所述第一RLC层SDU和/或所述第一RLC层SDU对应的PDU。
可选地,本公开实施例的装置还可包括:
第二处理单元,用于在所述待丢弃的第二适配层SDU或者与所述第二适配层SDU对应的PDU未传输至RLC层的情况下,使所述适配层丢弃所述第二适配层SDU和/或与所述第二适配层SDU对应的PDU。
可选地,本公开实施例的装置还可包括:
第三处理单元,用于在与所述第一RLC层SDU对应的PDU传输至所述 RLC层的下一层的情况下,使所述RLC层不执行SDU丢弃;或者,
第二发送单元,用于在与所述第一RLC层SDU对应的PDU传输至所述RLC层的下一层的情况下,向下一跳节点发送第二指示信息。
可选地,第一丢弃处理单元801具体用于:
使所述特定协议层根据所述第二指示信息,确定待丢弃的特定协议层的SDU和/或PDU;
在所述特定协议层接收到所述上一跳节点发送的所述特定协议层的所述SDU和/或PDU的情况下,所述特定协议层丢弃所述SDU和/或PDU。
可选地,所述第二指示信息包括下述中的至少一项:
远端终端的标识信息;
逻辑信道的标识信息;
端到端承载的标识信息;
待丢弃的SDU编号;
待丢弃的PDU编号。
可选地,所述第二接收单元具体用于:
通过下述信息中的一者,接收所述特定设备的上一跳节点发送的第二指示信息:
无线资源控制RRC信令;
RLC控制PDU;
媒体接入控制层控制单元MAC CE;
物理层控制信息。
可选地,所述第二接收单元具体用于:
接收所述特定设备的上一跳节点在满足发送条件的情况下、发送的第二指示信息,其中,所述发送条件为:所述特定设备的上一跳节点确定待丢弃的特定协议层的SDU和/或PDU,且所述特定协议层的SDU对应的PDU已经传输至所述特定协议层的下一层。
可选地,第一丢弃处理单元801具体用于:
在所述特定协议层为适配层,且接收到PDCP层发送的第三适配层SDU的情况下,启动所述适配层的丢弃定时器;
在所述适配层的丢弃定时器超时,且所述第三适配层SDU或者与所述第三适配层SDU对应的PDU未传输至所述适配层的下一层的情况下,使所述适配层丢弃所述第三适配层SDU和/或与所述第三适配层SDU对应的PDU。
可选地,本公开实施例的装置还可包括:
第四处理单元,用于在所述适配层的丢弃定时器超时,且与所述第三适配层SDU对应的PDU传输至所述适配层的下一层的情况下,使所述适配层不执行SDU丢弃;或者,
第三发送单元,用于在所述适配层的丢弃定时器超时,且与所述第三适配层SDU对应的PDU传输至所述适配层的下一层的情况下,向所述适配层的下一层发送第四指示信息,所述第四指示信息用于指示所述适配层的下一层丢弃该层SDU和/或该层SDU对应的PDU。
可选地,所述适配层的丢弃定时器的长度基于端到端承载或者RLC信道的时延要求确定。
可选地,第一丢弃处理单元801具体用于:
在所述特定协议层为RLC层,且接收到适配层发送的第二RLC层SDU的情况下,启动所述RLC层的丢弃定时器;
在所述RLC层的丢弃定时器超时,且所述第二RLC层SDU或者与所述第二RLC层SDU对应的PDU未传输至所述RLC层的下一层的情况下,使所述RLC层丢弃所述第二RLC层SDU和/或与所述第二RLC层SDU对应的PDU。
可选地,本公开实施例的装置还可包括:
第五处理单元,用于在所述RLC层的丢弃定时器超时,且与所述第二RLC层SDU对应的PDU传输至所述RLC层的下一层的情况下,所述RLC层不执行SDU丢弃;或者,
第四发送单元,用于在所述RLC层的丢弃定时器超时,且与所述第二RLC层SDU对应的PDU传输至所述RLC层的下一层的情况下,向下一跳节点发送第二指示信息。
本公开实施例的数据处理装置,通过使特定设备的特定协议层基于所述特定设备的特定协议层的上一层的第一指示信息、来自上一跳节点的第二指 示信息和定时器中的至少一项执行服务数据单元SDU和/或协议数据单元PDU丢弃处理,其中,所述特定设备为网络侧设备或者远端终端,所述特定协议层为适配层或者无线链路控制RLC层,如此,在中继场景下引入了适配层和多跳后,可以保证SDU丢弃能够正常进行,避免不必要的数据传输导致的拥塞问题,能够更好地保证有效数据的传输,提升整个中继系统的性能。
需要说明的是,本公开实施例中对单元的划分是示意性的,仅仅为一种逻辑功能划分,实际实现时可以有另外的划分方式。另外,在本公开各个实施例中的各功能单元可以集成在一个处理单元中,也可以是各个单元单独物理存在,也可以两个或两个以上单元集成在一个单元中。上述集成的单元既可以采用硬件的形式实现,也可以采用软件功能单元的形式实现。
所述集成的单元如果以软件功能单元的形式实现并作为独立的产品销售或使用时,可以存储在一个处理器可读取存储介质中。基于这样的理解,本公开的技术方案本质上或者说对相关技术做出贡献的部分或者该技术方案的全部或部分可以以软件产品的形式体现出来,该计算机软件产品存储在一个存储介质中,包括若干指令用以使得一台计算机设备(可以是个人计算机,服务器,或者网络设备等)或处理器(processor)执行本公开各个实施例所述方法的全部或部分步骤。而前述的存储介质包括:U盘、移动硬盘、只读存储器(Read-Only Memory,ROM)、随机存取存储器(Random Access Memory,RAM)、磁碟或者光盘等各种可以存储程序代码的介质。
在此需要说明的是,本公开实施例提供的上述装置,能够实现上述方法实施例所实现的所有方法步骤,且能够达到相同的技术效果,在此不再对本实施例中与方法实施例相同的部分及有益效果进行具体赘述。
在本公开的一些实施例中,还提供了一种处理器可读存储介质,所述处理器可读存储介质存储有程序指令,所述程序指令用于使所述处理器执行实现以下步骤:
使特定设备的特定协议层基于来自所述特定设备的特定协议层的上一层的第一指示信息、来自上一跳节点的第二指示信息和定时器中的至少一项执行服务数据单元SDU和/或协议数据单元PDU丢弃处理,其中,所述特定设备为网络侧设备或者远端终端,所述特定协议层为适配层或者无线链路控制 RLC层。
该程序被处理器执行时能实现上述应用于如图9所示的特定设备侧的方法实施例中的所有实现方式,为避免重复,此处不再赘述。
如图9所示,本公开实施例还提供一种中继终端,包括:存储器920、收发机900,处理器910:存储器920,用于存储计算机程序;收发机900,用于在所述处理器910的控制下收发数据;处理器910,用于读取所述存储器920中的计算机程序并执行以下操作:
使中继终端的特定协议层基于来自所述中继终端的特定协议层的上一层的第一指示信息、来自上一跳节点的第二指示信息和定时器中的至少一项执行服务数据单元SDU和/或协议数据单元PDU丢弃处理,所述特定协议层为适配层或者无线链路控制RLC层。
其中,在图9中,总线架构可以包括任意数量的互联的总线和桥,具体由处理器910代表的一个或多个处理器和存储器920代表的存储器的各种电路链接在一起。总线架构还可以将诸如外围设备、稳压器和功率管理电路等之类的各种其他电路链接在一起,这些都是本领域所公知的,因此,本文不再对其进行进一步描述。总线接口提供接口。收发机900可以是多个元件,即包括发送机和接收机,提供用于在传输介质上与各种其他装置通信的单元,这些传输介质包括,这些传输介质包括无线信道、有线信道、光缆等传输介质。针对不同的用户设备,用户接口930还可以是能够外接内接需要设备的接口,连接的设备包括但不限于小键盘、显示器、扬声器、麦克风、操纵杆等。
处理器910负责管理总线架构和通常的处理,存储器920可以存储处理器910在执行操作时所使用的数据。
可选地,处理器910可以是中央处理器(CPU)、专用集成电路(Application Specific Integrated Circuit,ASIC)、现场可编程门阵列(Field-Programmable Gate Array,FPGA)或复杂可编程逻辑器件(Complex Programmable Logic Device,CPLD),处理器910也可以采用多核架构。
处理器910通过调用存储器存储的程序指令,用于按照获得的可执行指令执行本公开实施例提供的任一所述方法。处理器910与存储器920也可以 物理上分开布置。
可选地,所述收发机900还用于:
接收所述中继终端的上一跳节点发送的第二指示信息。
可选地,所述处理器910还用于:
在所述特定协议层为RLC层,且接收到适配层发送的第一指示信息的情况下,使所述RLC层根据所述第一指示信息确定待丢弃的第三RLC层SDU;
在所述待丢弃的第三RLC层SDU或者与所述第三RLC层SDU对应的PDU未传输至所述RLC层的下一层的情况下,所述RLC层丢弃所述第三RLC层SDU和/或所述第三RLC层SDU对应的PDU。
可选地,所述处理器910还用于:
在与所述第三RLC层SDU对应的PDU传输至所述RLC层的下一层的情况下,使所述RLC层不执行SDU丢弃;或者,
在与所述第三RLC层SDU对应的PDU传输至所述RLC层的下一层的情况下,通过收发机向下一跳节点发送第二指示信息。
可选地,所述处理器910还用于:
使所述特定协议层根据所述第二指示信息,确定待丢弃的特定协议层的SDU和/或PDU;
在所述特定协议层接收到所述中继终端的上一跳节点发送的所述特定协议层的所述SDU和/或PDU的情况下,所述特定协议层丢弃所述SDU和/或PDU。
可选地,所述第二指示信息包括下述中的至少一项:
远端终端的标识信息;
逻辑信道的标识信息;
端到端承载的标识信息;
待丢弃的SDU编号;
待丢弃的PDU编号。
可选地,所述收发机900还用于:
通过下述信息中的一者,接收所述中继终端的上一跳节点发送的第二指示信息:
无线资源控制RRC信令;
RLC控制PDU;
媒体接入控制层控制单元MAC CE;
物理层控制信息。
可选地,所述收发机900还用于:
接收所述中继终端的上一跳节点在满足发送条件的情况下、发送的第二指示信息,其中,所述发送条件为:所述中继终端的上一跳节点确定待丢弃的特定协议层的SDU和/或PDU,且所述特定协议层的SDU对应的PDU已经传输至所述特定协议层的下一层。
可选地,所述处理器910还用于:
在所述特定协议层为适配层,且接收到中继终端的上一跳节点发送的第四适配层SDU的情况下,启动所述适配层的丢弃定时器;
在所述适配层的丢弃定时器超时,且所述第四适配层SDU或者与所述第四适配层SDU对应的PDU未传输至所述适配层的下一层的情况下,使所述适配层丢弃所述第四适配层SDU和/或与所述第四适配层SDU对应的PDU。
可选地,所述处理器910还用于:
在所述适配层的丢弃定时器超时,且与所述第四适配层SDU对应的PDU传输至所述适配层的下一层的情况下,所述适配层不执行SDU丢弃;或者,
在所述适配层的丢弃定时器超时,且与所述第四适配层SDU对应的PDU传输至所述适配层的下一层的情况下,通过收发机向所述适配层的下一层发送第五指示信息,所述第五指示信息用于指示所述适配层的下一层丢弃该层SDU和/或该层SDU对应的PDU。
可选地,所述处理器910还用于:
在所述特定协议层为RLC层,且接收到适配层发送的第四RLC层SDU的情况下,启动所述RLC层的丢弃定时器;
在所述RLC层的丢弃定时器超时,且所述第四RLC层SDU或者与所述第四RLC层SDU对应的PDU未传输至所述RLC层的下一层的情况下,使所述RLC层丢弃所述第四RLC层SDU和/或与所述第四RLC层SDU对应的PDU。
可选地,所述处理器910还用于:
在所述RLC层的丢弃定时器超时,且与所述第四RLC层SDU对应的PDU传输至所述RLC层的下一层的情况下,使所述RLC层不执行SDU丢弃;或者,
在所述RLC层的丢弃定时器超时,且与所述第四RLC层SDU对应的PDU传输至所述RLC层的下一层的情况下,通过所述收发机向下一跳节点发送第二指示信息。
本公开实施例的中继终端,通过中继终端的特定协议层基于来自所述中继终端的特定协议层的上一层的第一指示信息、来自上一跳节点的第二指示信息和定时器中的至少一项执行服务数据单元SDU和/或协议数据单元PDU丢弃处理,所述特定协议层为适配层或者无线链路控制RLC层,如此,在中继场景下引入了适配层和多跳后,可以保证SDU丢弃能够正常进行,避免不必要的数据传输导致的拥塞问题,能够更好地保证有效数据的传输,提升整个中继系统的性能。
如图10所示,本公开实施还提供了一种数据处理装置,包括:
第二丢弃处理单元1001,用于使中继终端的特定协议层基于来自所述中继终端的特定协议层的上一层的第一指示信息、来自上一跳节点的第二指示信息和定时器中的至少一项执行服务数据单元SDU和/或协议数据单元PDU丢弃处理,所述特定协议层为适配层或者无线链路控制RLC层。
可选地,本公开实施例的装置还包括:
第三接收单元,用于接收所述中继终端的上一跳节点发送的第二指示信息。
可选地,第二丢弃处理单元1001具体用于:
在所述特定协议层为RLC层,且接收到适配层发送的第一指示信息的情况下,使所述RLC层根据所述第一指示信息确定待丢弃的第三RLC层SDU;
在所述待丢弃的第三RLC层SDU或者与所述第三RLC层SDU对应的PDU未传输至所述RLC层的下一层的情况下,所述RLC层丢弃所述第三RLC层SDU和/或所述第三RLC层SDU对应的PDU。
可选地,本公开实施例的装置还包括:
第六处理单元,用于在与所述第三RLC层SDU对应的PDU传输至所述RLC层的下一层的情况下,使所述RLC层不执行SDU丢弃;或者,
第五发送单元,用于在与所述第三RLC层SDU对应的PDU传输至所述RLC层的下一层的情况下,向下一跳节点发送第二指示信息。
可选地,第二丢弃处理单元1001具体用于:
使所述特定协议层根据所述第二指示信息,确定待丢弃的特定协议层的SDU和/或PDU;
在所述特定协议层接收到所述中继终端的上一跳节点发送的所述特定协议层的所述SDU和/或PDU的情况下,所述特定协议层丢弃所述SDU和/或PDU。
可选地,所述第二指示信息包括下述中的至少一项:
远端终端的标识信息;
逻辑信道的标识信息;
端到端承载的标识信息;
待丢弃的SDU编号;
待丢弃的PDU编号。
可选地,第三接收单元具体用于:
通过下述信息中的一者,接收所述中继终端的上一跳节点发送的第二指示信息:
无线资源控制RRC信令;
RLC控制PDU;
媒体接入控制层控制单元MAC CE;
物理层控制信息。
可选地,第三接收单元具体用于:
接收所述中继终端的上一跳节点在满足发送条件的情况下、发送的第二指示信息,其中,所述发送条件为:所述中继终端的上一跳节点确定待丢弃的特定协议层的SDU和/或PDU,且所述特定协议层的SDU对应的PDU已经传输至所述特定协议层的下一层。
可选地,第二丢弃处理单元1001具体用于:
在所述特定协议层为适配层,且接收到中继终端的上一跳节点发送的第四适配层SDU的情况下,启动所述适配层的丢弃定时器;
在所述适配层的丢弃定时器超时,且所述第四适配层SDU或者与所述第四适配层SDU对应的PDU未传输至所述适配层的下一层的情况下,使所述适配层丢弃所述第四适配层SDU和/或与所述第四适配层SDU对应的PDU。
可选地,本公开实施例的装置还可包括:
第七处理单元,用于在所述适配层的丢弃定时器超时,且与所述第四适配层SDU对应的PDU传输至所述适配层的下一层的情况下,使所述适配层不执行SDU丢弃;或者,
第六发送单元,用于在所述适配层的丢弃定时器超时,且与所述第四适配层SDU对应的PDU传输至所述适配层的下一层的情况下,向所述适配层的下一层发送第五指示信息,所述第五指示信息用于指示所述适配层的下一层丢弃该层SDU和/或该层SDU对应的PDU。
可选地,第二丢弃处理单元1001具体用于:
在所述特定协议层为RLC层,且接收到适配层发送的第四RLC层SDU的情况下,启动所述RLC层的丢弃定时器;
在所述RLC层的丢弃定时器超时,且所述第四RLC层SDU或者与所述第四RLC层SDU对应的PDU未传输至所述RLC层的下一层的情况下,使所述RLC层丢弃所述第四RLC层SDU和/或与所述第四RLC层SDU对应的PDU。
可选地,本公开实施例的装置还可包括:
第八处理单元,用于在所述RLC层的丢弃定时器超时,且与所述第四RLC层SDU对应的PDU传输至所述RLC层的下一层的情况下,使所述RLC层不执行SDU丢弃;或者,
第七发送单元,用于在所述RLC层的丢弃定时器超时,且与所述第四RLC层SDU对应的PDU传输至所述RLC层的下一层的情况下,向下一跳节点发送第二指示信息。
本公开实施例的数据处理装置,通过使中继终端的特定协议层基于来自所述中继终端的特定协议层的上一层的第一指示信息、来自上一跳节点的第 二指示信息和定时器中的至少一项执行服务数据单元SDU和/或协议数据单元PDU丢弃处理,所述特定协议层为适配层或者无线链路控制RLC层,如此,在中继场景下引入了适配层和多跳后,可以保证SDU丢弃能够正常进行,避免不必要的数据传输导致的拥塞问题,能够更好地保证有效数据的传输,提升整个中继系统的性能。
需要说明的是,本公开实施例中对单元的划分是示意性的,仅仅为一种逻辑功能划分,实际实现时可以有另外的划分方式。另外,在本公开各个实施例中的各功能单元可以集成在一个处理单元中,也可以是各个单元单独物理存在,也可以两个或两个以上单元集成在一个单元中。上述集成的单元既可以采用硬件的形式实现,也可以采用软件功能单元的形式实现。
所述集成的单元如果以软件功能单元的形式实现并作为独立的产品销售或使用时,可以存储在一个处理器可读取存储介质中。基于这样的理解,本公开的技术方案本质上或者说对相关技术做出贡献的部分或者该技术方案的全部或部分可以以软件产品的形式体现出来,该计算机软件产品存储在一个存储介质中,包括若干指令用以使得一台计算机设备(可以是个人计算机,服务器,或者网络设备等)或处理器(processor)执行本公开各个实施例所述方法的全部或部分步骤。而前述的存储介质包括:U盘、移动硬盘、只读存储器(Read-Only Memory,ROM)、随机存取存储器(Random Access Memory,RAM)、磁碟或者光盘等各种可以存储程序代码的介质。
在此需要说明的是,本公开实施例提供的上述装置,能够实现上述方法实施例所实现的所有方法步骤,且能够达到相同的技术效果,在此不再对本实施例中与方法实施例相同的部分及有益效果进行具体赘述。
在本公开的一些实施例中,还提供了一种处理器可读存储介质,所述处理器可读存储介质存储有程序指令,所述程序指令用于使所述处理器执行实现以下步骤:
使中继终端的特定协议层基于来自所述中继终端的特定协议层的上一层的第一指示信息、来自上一跳节点的第二指示信息和定时器中的至少一项执行服务数据单元SDU和/或协议数据单元PDU丢弃处理,所述特定协议层为适配层或者无线链路控制RLC层。
该程序被处理器执行时能实现上述应用于如图3所示的中继终端侧的方法实施例中的所有实现方式,为避免重复,此处不再赘述。
本公开实施例提供的技术方案可以适用于多种系统,尤其是5G系统。例如适用的系统可以是全球移动通讯(Global System of Mobile communication,GSM)系统、码分多址(Code Division Multiple Access,CDMA)系统、宽带码分多址(Wideband Code Division Multiple Access,WCDMA)通用分组无线业务(General Packet Radio Service,GPRS)系统、长期演进(Long Term Evolution,LTE)系统、LTE频分双工(Frequency Division Duplex,FDD)系统、LTE时分双工(Time Division Duplex,TDD)系统、高级长期演进(Long Term Evolution Advanced,LTE-A)系统、通用移动系统(Universal Mobile Telecommunication System,UMTS)、全球互联微波接入(Worldwide interoperability for Microwave Access,WiMAX)系统、5G新空口(New Radio,NR)系统等。这多种系统中均包括终端设备和网络设备。系统中还可以包括核心网部分,例如演进的分组系统(Evloved Packet System,EPS)、5G系统(5GS)等。
本公开实施例涉及的终端设备,可以是指向用户提供语音和/或数据连通性的设备,具有无线连接功能的手持式设备、或连接到无线调制解调器的其他处理设备等。在不同的系统中,终端设备的名称可能也不相同,例如在5G系统中,终端设备可以称为用户设备(User Equipment,UE)。无线终端设备可以经无线接入网(Radio Access Network,RAN)与一个或多个核心网(Core Network,CN)进行通信,无线终端设备可以是移动终端设备,如移动电话(或称为“蜂窝”电话)和具有移动终端设备的计算机,例如,可以是便携式、袖珍式、手持式、计算机内置的或者车载的移动装置,它们与无线接入网交换语言和/或数据。例如,个人通信业务(Personal Communication Service,PCS)电话、无绳电话、会话发起协议(Session Initiated Protocol,SIP)话机、无线本地环路(Wireless Local Loop,WLL)站、个人数字助理(Personal Digital Assistant,PDA)等设备。无线终端设备也可以称为系统、订户单元(subscriber unit)、订户站(subscriber station),移动站(mobile station)、移动台(mobile)、远程站(remote station)、接入点(access point)、远程终端设备(remote terminal)、 接入终端设备(access terminal)、用户终端设备(user terminal)、用户代理(user agent)、用户装置(user device),本公开实施例中并不限定。
本公开实施例涉及的网络设备,可以是基站,该基站可以包括多个为终端提供服务的小区。根据具体应用场合不同,基站又可以称为接入点,或者可以是接入网中在空中接口上通过一个或多个扇区与无线终端设备通信的设备,或者其它名称。网络设备可用于将收到的空中帧与网际协议(Internet Protocol,IP)分组进行相互更换,作为无线终端设备与接入网的其余部分之间的路由器,其中接入网的其余部分可包括网际协议(IP)通信网络。网络设备还可协调对空中接口的属性管理。例如,本公开实施例涉及的网络设备可以是全球移动通信系统(Global System for Mobile communications,GSM)或码分多址接入(Code Division Multiple Access,CDMA)中的网络设备(Base Transceiver Station,BTS),也可以是带宽码分多址接入(Wide-band Code Division Multiple Access,WCDMA)中的网络设备(NodeB),还可以是长期演进(Long Term Evolution,LTE)系统中的演进型网络设备(evolutional Node B,eNB或e-NodeB)、5G网络架构(next generation system)中的5G基站(gNB),也可以是家庭演进基站(Home evolved Node B,HeNB)、中继节点(relay node)、家庭基站(femto)、微微基站(pico)等,本公开实施例中并不限定。在一些网络结构中,网络设备可以包括集中单元(Centralized Unit,CU)节点和分布单元(Distributed Unit,DU)节点,集中单元和分布单元也可以地理上分开布置。
网络设备与终端设备之间可以各自使用一或多根天线进行多输入多输出(Multi Input Multi Output,MIMO)传输,MIMO传输可以是单用户MIMO(Single User MIMO,SU-MIMO)或多用户MIMO(Multiple User MIMO,MU-MIMO)。根据根天线组合的形态和数量,MIMO传输可以是二维MIMO(2Dimension MIMO,2D-MIMO)、三维MIMO(3Dimension MIMO,3D-MIMO)、全维度MIMO(Full Dimension MIMO,FD-MIMO)或超大规模MIMO(massive-MIMO),也可以是分集传输或预编码传输或波束赋形传输等。
本领域内的技术人员应明白,本公开的实施例可提供为方法、系统、或 计算机程序产品。因此,本公开可采用完全硬件实施例、完全软件实施例、或结合软件和硬件方面的实施例的形式。而且,本公开可采用在一个或多个其中包含有计算机可用程序代码的计算机可用存储介质(包括但不限于磁盘存储器和光学存储器等)上实施的计算机程序产品的形式。
本公开是参照根据本公开实施例的方法、设备(系统)、和计算机程序产品的流程图和/或方框图来描述的。应理解可由计算机可执行指令实现流程图和/或方框图中的每一流程和/或方框、以及流程图和/或方框图中的流程和/或方框的结合。可提供这些计算机可执行指令到通用计算机、专用计算机、嵌入式处理机或其他可编程数据处理设备的处理器以产生一个机器,使得通过计算机或其他可编程数据处理设备的处理器执行的指令产生用于实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能的装置。
这些处理器可执行指令也可存储在能引导计算机或其他可编程数据处理设备以特定方式工作的处理器可读存储器中,使得存储在该处理器可读存储器中的指令产生包括指令装置的制造品,该指令装置实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能。
这些处理器可执行指令也可装载到计算机或其他可编程数据处理设备上,使得在计算机或其他可编程设备上执行一系列操作步骤以产生计算机实现的处理,从而在计算机或其他可编程设备上执行的指令提供用于实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能的步骤。
需要说明的是,应理解以上各个模块的划分仅仅是一种逻辑功能的划分,实际实现时可以全部或部分集成到一个物理实体上,也可以物理上分开。且这些模块可以全部以软件通过处理元件调用的形式实现;也可以全部以硬件的形式实现;还可以部分模块通过处理元件调用软件的形式实现,部分模块通过硬件的形式实现。例如,确定模块可以为单独设立的处理元件,也可以集成在上述装置的某一个芯片中实现,此外,也可以以程序代码的形式存储于上述装置的存储器中,由上述装置的某一个处理元件调用并执行以上确定模块的功能。其它模块的实现与之类似。此外这些模块全部或部分可以集成在一起,也可以独立实现。这里所述的处理元件可以是一种集成电路,具有 信号的处理能力。在实现过程中,上述方法的各步骤或以上各个模块可以通过处理器元件中的硬件的集成逻辑电路或者软件形式的指令完成。
例如,各个模块、单元、子单元或子模块可以是被配置成实施以上方法的一个或多个集成电路,例如:一个或多个特定集成电路(Application Specific Integrated Circuit,ASIC),或,一个或多个微处理器(digital signal processor,DSP),或,一个或者多个现场可编程门阵列(Field Programmable Gate Array,FPGA)等。再如,当以上某个模块通过处理元件调度程序代码的形式实现时,该处理元件可以是通用处理器,例如中央处理器(Central Processing Unit,CPU)或其它可以调用程序代码的处理器。再如,这些模块可以集成在一起,以片上系统(system-on-a-chip,SOC)的形式实现。
本公开的说明书和权利要求书中的术语“第一”、“第二”等是用于区别类似的对象,而不必用于描述特定的顺序或先后次序。应该理解这样使用的数据在适当情况下可以互换,以便这里描述的本公开的实施例,例如除了在这里图示或描述的那些以外的顺序实施。此外,术语“包括”和“具有”以及他们的任何变形,意图在于覆盖不排他的包含,例如,包含了一系列步骤或单元的过程、方法、系统、产品或设备不必限于清楚地列出的那些步骤或单元,而是可包括没有清楚地列出的或对于这些过程、方法、产品或设备固有的其它步骤或单元。此外,说明书以及权利要求中使用“和/或”表示所连接对象的至少其中之一,例如A和/或B和/或C,表示包含单独A,单独B,单独C,以及A和B都存在,B和C都存在,A和C都存在,以及A、B和C都存在的7种情况。类似地,本说明书以及权利要求中使用“A和B中的至少一个”应理解为“单独A,单独B,或A和B都存在”。
显然,本领域的技术人员可以对本公开进行各种改动和变型而不脱离本公开的精神和范围。这样,倘若本公开的这些修改和变型属于本公开权利要求及其等同技术的范围之内,则本公开也意图包含这些改动和变型在内。

Claims (44)

  1. 一种数据处理方法,包括:
    远端终端的特定协议层基于来自所述远端终端的特定协议层的上一层的第一指示信息、来自上一跳节点的第二指示信息、定时器中的至少一项执行服务数据单元SDU和/或协议数据单元PDU丢弃处理,其中,所述特定协议层为适配层或者无线链路控制RLC层。
  2. 根据权利要求1所述的方法,所述方法还包括:
    接收所述特定协议层的上一层发送的第一指示信息;或者,
    接收所述远端终端的上一跳节点发送的第二指示信息。
  3. 根据权利要求1所述的方法,其中,所述特定协议层为适配层,远端终端的特定协议层基于来自所述远端终端的特定协议层的上一层的第一指示信息执行服务数据单元SDU和/或协议数据单元PDU丢弃处理,包括:
    在第一分组数据汇聚协议PDCP SDU对应的丢弃定时器超时,且第一PDCP实体确定与所述第一PDCP SDU相关的PDCP PDU传输至对应的适配层的情况下,所述适配层接收第一PDCP实体发送的第一指示信息,所述第一PDCP实体为与第一PDCP SDU对应的PDCP层中的PDCP实体;
    所述适配层根据所述第一指示信息确定待丢弃的第一适配层SDU;
    在所述待丢弃的第一适配层SDU或者与所述第一适配层SDU对应的PDU未传输至所述适配层的下一层的情况下,所述适配层丢弃所述第一适配层SDU和/或与所述第一适配层SDU对应的PDU。
  4. 根据权利要求3所述的方法,其中,根据所述第一指示信息确定待丢弃的适配层SDU之后,所述方法还包括:
    在与所述适配层SDU对应的PDU传输至所述适配层的下一层的情况下,所述适配层不执行SDU丢弃;或者,
    在与所述适配层SDU对应的PDU传输至所述适配层的下一层的情况下,向下一跳节点发送用于指示执行所述特定协议层的SDU和/或PDU丢弃处理的指示信息。
  5. 根据权利要求1所述的方法,其中,所述特定协议层为RLC层,远 端终端的特定协议层基于来自所述远端终端的特定协议层的上一层的第一指示信息执行服务数据单元SDU和/或协议数据单元PDU丢弃处理,包括:
    在第二PDCP SDU对应的丢弃定时器超时,且第二PDCP实体确定与所述第二PDCP SDU相关的PDCP PDU传输至对应的适配层的情况下,所述适配层接收第二PDCP实体发送的第三指示信息,所述第二PDCP实体为与第二PDCP SDU对应的PDCP层中的PDCP实体,所述第三指示信息用于指示所述适配层丢弃所述PDCP PDU;
    所述适配层根据所述第三指示信息确定待丢弃的第二适配层SDU;
    在与所述第二适配层SDU对应的PDU传输至RLC层的情况下,所述RLC层接收所述适配层发送的第一指示信息;
    所述RLC层根据所述第一指示信息确定待丢弃的第一RLC层SDU;
    在所述待丢弃的第一RLC层SDU或者与所述第一RLC层SDU对应的PDU未传输至所述RLC层的下一层的情况下,所述RLC层丢弃所述第一RLC层SDU和/或所述第一RLC层SDU对应的PDU。
  6. 根据权利要求5所述的方法,其中,所述适配层根据所述第三指示信息确定待丢弃的第二适配层SDU之后,所述方法还包括:
    在所述待丢弃的第二适配层SDU或者与所述第二适配层SDU对应的PDU未传输至RLC层的情况下,所述适配层丢弃所述第二适配层SDU和/或与所述第二适配层SDU对应的PDU。
  7. 根据权利要求5所述的方法,其中,所述RLC层根据所述第一指示信息确定待丢弃的第一RLC层SDU之后,所述方法还包括:
    在与所述第一RLC层SDU对应的PDU传输至所述RLC层的下一层的情况下,所述RLC层不执行SDU丢弃;或者,
    在与所述第一RLC层SDU对应的PDU传输至所述RLC层的下一层的情况下,向下一跳节点发送第二指示信息。
  8. 根据权利要求1所述的方法,其中,远端终端的特定协议层基于来自上一跳节点的第二指示信息执行服务数据单元SDU和/或协议数据单元PDU丢弃处理,包括:
    所述特定协议层根据所述第二指示信息,确定待丢弃的特定协议层的 SDU和/或PDU;
    在所述特定协议层接收到所述上一跳节点发送的所述特定协议层的所述SDU和/或PDU的情况下,所述特定协议层丢弃所述SDU和/或PDU。
  9. 根据权利要求1所述的方法,其中,所述第二指示信息包括下述中的至少一项:
    远端终端的标识信息;
    逻辑信道的标识信息;
    端到端承载的标识信息;
    待丢弃的SDU编号;
    待丢弃的PDU编号。
  10. 根据权利要求2所述的方法,其中,接收所述远端终端的上一跳节点发送的第二指示信息,包括:
    通过下述信息中的一者,接收所述远端终端的上一跳节点发送的第二指示信息:
    无线资源控制RRC信令;
    RLC控制PDU;
    媒体接入控制层控制单元MAC CE;
    物理层控制信息。
  11. 根据权利要求2所述的方法,其中,接收所述远端终端的上一跳节点发送的第二指示信息,包括:
    接收所述远端终端的上一跳节点在满足发送条件的情况下、发送的第二指示信息,其中,所述发送条件为:所述远端终端的上一跳节点确定待丢弃的特定协议层的SDU和/或PDU,且所述特定协议层的SDU对应的PDU已经传输至所述特定协议层的下一层。
  12. 根据权利要求1所述的方法,其中,远端终端的特定协议层基于定时器执行服务数据单元SDU和/或协议数据单元PDU丢弃处理,包括:
    在所述特定协议层为适配层,且接收到PDCP层发送的第三适配层SDU的情况下,启动所述适配层的丢弃定时器;
    在所述适配层的丢弃定时器超时,且所述第三适配层SDU或者与所述第 三适配层SDU对应的PDU未传输至所述适配层的下一层的情况下,所述适配层丢弃所述第三适配层SDU和/或与所述第三适配层SDU对应的PDU。
  13. 根据权利要求12所述的方法,其中,启动所述适配层的丢弃定时器之后,所述方法还包括:
    在所述适配层的丢弃定时器超时,且与所述第三适配层SDU对应的PDU传输至所述适配层的下一层的情况下,所述适配层不执行SDU丢弃;或者,
    在所述适配层的丢弃定时器超时,且与所述第三适配层SDU对应的PDU传输至所述适配层的下一层的情况下,向所述适配层的下一层发送第四指示信息,所述第四指示信息用于指示所述适配层的下一层丢弃该层SDU和/或该层SDU对应的PDU。
  14. 根据权利要求12所述的方法,其中,所述适配层的丢弃定时器的长度基于端到端承载或者RLC信道的时延要求确定。
  15. 根据权利要求1所述的方法,其中,远端终端的特定协议层基于定时器执行服务数据单元SDU和/或协议数据单元PDU丢弃处理,包括:
    在所述特定协议层为RLC层,且接收到适配层发送的第二RLC层SDU的情况下,启动所述RLC层的丢弃定时器;
    在所述RLC层的丢弃定时器超时,且所述第二RLC层SDU或者与所述第二RLC层SDU对应的PDU未传输至所述RLC层的下一层的情况下,所述RLC层丢弃所述第二RLC层SDU和/或与所述第二RLC层SDU对应的PDU。
  16. 根据权利要求15所述的方法,其中,启动所述RLC层的丢弃定时器之后,所述方法还包括:
    在所述RLC层的丢弃定时器超时,且与所述第二RLC层SDU对应的PDU传输至所述RLC层的下一层的情况下,所述RLC层不执行SDU丢弃;或者,
    在所述RLC层的丢弃定时器超时,且与所述第二RLC层SDU对应的PDU传输至所述RLC层的下一层的情况下,向下一跳节点发送第二指示信息。
  17. 一种数据处理方法,包括:
    中继终端的特定协议层基于来自所述中继终端的特定协议层的上一层的 第一指示信息、来自上一跳节点的第二指示信息、定时器中的至少一项执行服务数据单元SDU和/或协议数据单元PDU丢弃处理,所述特定协议层为适配层或者无线链路控制RLC层。
  18. 根据权利要求17所述的方法,所述方法还包括:
    接收所述中继终端的上一跳节点发送的第二指示信息。
  19. 根据权利要求17所述的方法,其中,中继终端的特定协议层基于来自所述中继终端的特定协议层的上一层的第一指示信息执行服务数据单元SDU和/或协议数据单元PDU丢弃处理,包括:
    在所述特定协议层为RLC层,且接收到适配层发送的第一指示信息的情况下,所述RLC层根据所述第一指示信息确定待丢弃的第三RLC层SDU;
    在所述待丢弃的第三RLC层SDU或者与所述第三RLC层SDU对应的PDU未传输至所述RLC层的下一层的情况下,所述RLC层丢弃所述第三RLC层SDU和/或所述第三RLC层SDU对应的PDU。
  20. 根据权利要求19所述的方法,其中,所述RLC层根据所述第一指示信息确定待丢弃的第三RLC层SDU之后,所述方法还包括:
    在与所述第三RLC层SDU对应的PDU传输至所述RLC层的下一层的情况下,所述RLC层不执行SDU丢弃;或者,
    在与所述第三RLC层SDU对应的PDU传输至所述RLC层的下一层的情况下,向下一跳节点发送用于指示执行所述特定协议层的SDU和/或PDU丢弃处理的指示信息。
  21. 根据权利要求17所述的方法,其中,中继终端的特定协议层基于来自上一跳节点的第二指示信息执行服务数据单元SDU和/或协议数据单元PDU丢弃处理,包括:
    所述特定协议层根据所述第二指示信息,确定待丢弃的特定协议层的SDU和/或PDU;
    在所述特定协议层接收到所述中继终端的上一跳节点发送的所述特定协议层的所述SDU和/或PDU的情况下,所述特定协议层丢弃所述SDU和/或PDU。
  22. 根据权利要求17所述的方法,其中,所述第二指示信息包括下述中 的至少一项:
    远端终端的标识信息;
    逻辑信道的标识信息;
    端到端承载的标识信息;
    待丢弃的SDU编号;
    待丢弃的PDU编号。
  23. 根据权利要求18所述的方法,其中,接收所述中继终端的上一跳节点发送的第二指示信息,包括:
    通过下述信息中的一者,接收所述中继终端的上一跳节点发送的第二指示信息:
    无线资源控制RRC信令;
    RLC控制PDU;
    媒体接入控制层控制单元MAC CE;
    物理层控制信息。
  24. 根据权利要求18所述的方法,其中,接收所述中继终端的上一跳节点发送的第二指示信息,包括:
    接收所述中继终端的上一跳节点在满足发送条件的情况下、发送的第二指示信息,其中,所述发送条件为:所述中继终端的上一跳节点确定待丢弃的特定协议层的SDU和/或PDU,且所述特定协议层的SDU对应的PDU已经传输至所述特定协议层的下一层。
  25. 根据权利要求17所述的方法,其中,中继终端的特定协议层基于定时器执行服务数据单元SDU和/或协议数据单元PDU丢弃处理,包括:
    在所述特定协议层为适配层,且接收到中继终端的上一跳节点发送的第四适配层SDU的情况下,启动所述适配层的丢弃定时器;
    在所述适配层的丢弃定时器超时,且所述第四适配层SDU或者与所述第四适配层SDU对应的PDU未传输至所述适配层的下一层的情况下,所述适配层丢弃所述第四适配层SDU和/或与所述第四适配层SDU对应的PDU。
  26. 根据权利要求25所述的方法,其中,启动所述适配层的丢弃定时器之后,所述方法还包括:
    在所述适配层的丢弃定时器超时,且与所述第四适配层SDU对应的PDU传输至所述适配层的下一层的情况下,所述适配层不执行SDU丢弃;或者,
    在所述适配层的丢弃定时器超时,且与所述第四适配层SDU对应的PDU传输至所述适配层的下一层的情况下,向所述适配层的下一层发送第五指示信息,所述第五指示信息用于指示所述适配层的下一层丢弃该层SDU和/或该层SDU对应的PDU。
  27. 根据权利要求17所述的方法,其中,中继终端的特定协议层基于定时器执行服务数据单元SDU和/或协议数据单元PDU丢弃处理,包括:
    在所述特定协议层为RLC层,且接收到适配层发送的第四RLC层SDU的情况下,启动所述RLC层的丢弃定时器;
    在所述RLC层的丢弃定时器超时,且所述第四RLC层SDU或者与所述第四RLC层SDU对应的PDU未传输至所述RLC层的下一层的情况下,所述RLC层丢弃所述第四RLC层SDU和/或与所述第四RLC层SDU对应的PDU。
  28. 根据权利要求27所述的方法,其中,启动所述RLC层的丢弃定时器之后,所述方法还包括:
    在所述RLC层的丢弃定时器超时,且与所述第四RLC层SDU对应的PDU传输至所述RLC层的下一层的情况下,所述RLC层不执行SDU丢弃;或者,
    在所述RLC层的丢弃定时器超时,且与所述第四RLC层SDU对应的PDU传输至所述RLC层的下一层的情况下,向下一跳节点发送第二指示信息。
  29. 一种数据处理方法,包括:
    网络侧设备的特定协议层基于来自所述网络侧设备的特定协议层的上一层的第一指示信息、来自上一跳节点的第二指示信息、定时器中的至少一项执行服务数据单元SDU和/或协议数据单元PDU丢弃处理,其中,所述特定协议层为适配层或者无线链路控制RLC层。
  30. 根据权利要求29所述的方法,所述方法还包括:
    接收所述特定协议层的上一层发送的第一指示信息;或者,
    接收所述网络侧设备的上一跳节点发送的第二指示信息。
  31. 根据权利要求29所述的方法,其中,所述特定协议层为适配层,网络侧设备的特定协议层基于来自所述网络侧设备的特定协议层的上一层的第一指示信息执行服务数据单元SDU和/或协议数据单元PDU丢弃处理,包括:
    在第一分组数据汇聚协议PDCP SDU对应的丢弃定时器超时,且第一PDCP实体确定与所述第一PDCP SDU相关的PDCP PDU传输至对应的适配层的情况下,所述适配层接收第一PDCP实体发送的第一指示信息,所述第一PDCP实体为与第一PDCP SDU对应的PDCP层中的PDCP实体;
    所述适配层根据所述第一指示信息确定待丢弃的第一适配层SDU;
    在所述待丢弃的第一适配层SDU或者与所述第一适配层SDU对应的PDU未传输至所述适配层的下一层的情况下,所述适配层丢弃所述第一适配层SDU和/或与所述第一适配层SDU对应的PDU。
  32. 根据权利要求31所述的方法,其中,根据所述第一指示信息确定待丢弃的适配层SDU之后,所述方法还包括:
    在与所述适配层SDU对应的PDU传输至所述适配层的下一层的情况下,所述适配层不执行SDU丢弃;或者,
    在与所述适配层SDU对应的PDU传输至所述适配层的下一层的情况下,向下一跳节点发送用于指示执行所述特定协议层的SDU和/或PDU丢弃处理的指示信息。
  33. 根据权利要求29所述的方法,其中,所述特定协议层为RLC层,网络侧设备的特定协议层基于来自所述网络侧设备的特定协议层的上一层的第一指示信息执行服务数据单元SDU和/或协议数据单元PDU丢弃处理,包括:
    在第二PDCP SDU对应的丢弃定时器超时,且第二PDCP实体确定与所述第二PDCP SDU相关的PDCP PDU传输至对应的适配层的情况下,所述适配层接收第二PDCP实体发送的第三指示信息,所述第二PDCP实体为与第二PDCP SDU对应的PDCP层中的PDCP实体,所述第三指示信息用于指示所述适配层丢弃所述PDCP PDU;
    所述适配层根据所述第三指示信息确定待丢弃的第二适配层SDU;
    在与所述第二适配层SDU对应的PDU传输至RLC层的情况下,所述 RLC层接收所述适配层发送的第一指示信息;
    所述RLC层根据所述第一指示信息确定待丢弃的第一RLC层SDU;
    在所述待丢弃的第一RLC层SDU或者与所述第一RLC层SDU对应的PDU未传输至所述RLC层的下一层的情况下,所述RLC层丢弃所述第一RLC层SDU和/或所述第一RLC层SDU对应的PDU。
  34. 根据权利要求33所述的方法,其中,所述适配层根据所述第三指示信息确定待丢弃的第二适配层SDU之后,所述方法还包括:
    在所述待丢弃的第二适配层SDU或者与所述第二适配层SDU对应的PDU未传输至RLC层的情况下,所述适配层丢弃所述第二适配层SDU和/或与所述第二适配层SDU对应的PDU。
  35. 根据权利要求33所述的方法,其中,所述RLC层根据所述第一指示信息确定待丢弃的第一RLC层SDU之后,所述方法还包括:
    在与所述第一RLC层SDU对应的PDU传输至所述RLC层的下一层的情况下,所述RLC层不执行SDU丢弃;或者,
    在与所述第一RLC层SDU对应的PDU传输至所述RLC层的下一层的情况下,向下一跳节点发送第二指示信息。
  36. 根据权利要求29所述的方法,其中,网络侧设备的特定协议层基于来自上一跳节点的第二指示信息执行服务数据单元SDU和/或协议数据单元PDU丢弃处理,包括:
    所述特定协议层根据所述第二指示信息,确定待丢弃的特定协议层的SDU和/或PDU;
    在所述特定协议层接收到所述上一跳节点发送的所述特定协议层的所述SDU和/或PDU的情况下,所述特定协议层丢弃所述SDU和/或PDU。
  37. 根据权利要求29所述的方法,其中,所述第二指示信息包括下述中的至少一项:
    远端终端的标识信息;
    逻辑信道的标识信息;
    端到端承载的标识信息;
    待丢弃的SDU编号;
    待丢弃的PDU编号。
  38. 一种远端终端,其特征在于,包括:存储器、收发机,处理器:存储器,用于存储程序指令;收发机,用于在所述处理器的控制下收发数据;处理器,用于读取所述存储器中的程序指令并执行如权利要求1至16中任一项所述的数据处理方法的步骤。
  39. 一种数据处理装置,包括:
    第一丢弃处理单元,用于使远端终端的特定协议层基于来自所述远端终端的特定协议层的上一层的第一指示信息、来自上一跳节点的第二指示信息、定时器中的至少一项执行服务数据单元SDU和/或协议数据单元PDU丢弃处理,其中,所述特定协议层为适配层或者无线链路控制RLC层。
  40. 一种中继终端,包括:存储器、收发机,处理器:存储器,用于存储计算机程序;收发机,用于在所述处理器的控制下收发数据;处理器,用于读取所述存储器中的计算机程序并执行如权利要求17至28中任一项所述的数据处理方法的步骤。
  41. 一种数据处理装置,包括:
    第二丢弃处理单元,用于使中继终端的特定协议层基于来自所述中继终端的特定协议层的上一层的第一指示信息、来自上一跳节点的第二指示信息、定时器中的至少一项执行服务数据单元SDU和/或协议数据单元PDU丢弃处理,所述特定协议层为适配层或者无线链路控制RLC层。
  42. 一种网络侧设备,其特征在于,包括:存储器、收发机,处理器:存储器,用于存储程序指令;收发机,用于在所述处理器的控制下收发数据;处理器,用于读取所述存储器中的程序指令并执行如权利要求29至37中任一项所述的数据处理方法的步骤。
  43. 一种数据处理装置,包括:
    第三丢弃处理单元,用于使网络侧设备的特定协议层基于来自所述网络侧设备的特定协议层的上一层的第一指示信息、来自上一跳节点的第二指示信息、定时器中的至少一项执行服务数据单元SDU和/或协议数据单元PDU丢弃处理,其中,所述特定协议层为适配层或者无线链路控制RLC层。
  44. 一种处理器可读存储介质,所述处理器可读存储介质存储有计算机 程序,所述计算机程序用于使所述处理器执行权利要求1至16中任一项所述的数据处理方法的步骤,或者执行权利要求17至28中任一项所述的数据处理方法的步骤,或者执行权利要求29至37中任一项所述的数据处理方法的步骤。
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