WO2018209682A1 - 无线链路控制层的数据接收处理的方法和设备 - Google Patents

无线链路控制层的数据接收处理的方法和设备 Download PDF

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Publication number
WO2018209682A1
WO2018209682A1 PCT/CN2017/085079 CN2017085079W WO2018209682A1 WO 2018209682 A1 WO2018209682 A1 WO 2018209682A1 CN 2017085079 W CN2017085079 W CN 2017085079W WO 2018209682 A1 WO2018209682 A1 WO 2018209682A1
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Prior art keywords
rlc pdu
target
rlc
pdu
target rlc
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PCT/CN2017/085079
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English (en)
French (fr)
Inventor
唐海
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Oppo广东移动通信有限公司
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Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=64273195&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=WO2018209682(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Oppo广东移动通信有限公司 filed Critical Oppo广东移动通信有限公司
Priority to CN201780053232.5A priority Critical patent/CN109661832B/zh
Priority to PCT/CN2017/085079 priority patent/WO2018209682A1/zh
Priority to EP17909724.1A priority patent/EP3493586B1/en
Priority to TW107114989A priority patent/TWI698146B/zh
Publication of WO2018209682A1 publication Critical patent/WO2018209682A1/zh
Priority to US16/354,930 priority patent/US10873990B2/en

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W28/00—Network traffic management; Network resource management
    • H04W28/02—Traffic management, e.g. flow control or congestion control
    • H04W28/06—Optimizing the usage of the radio link, e.g. header compression, information sizing, discarding information
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W80/00—Wireless network protocols or protocol adaptations to wireless operation
    • H04W80/02—Data link layer protocols
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H04L1/1607—Details of the supervisory signal
    • H04L1/1621—Group acknowledgement, i.e. the acknowledgement message defining a range of identifiers, e.g. of sequence numbers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
    • H04L1/1829—Arrangements specially adapted for the receiver end
    • H04L1/1835—Buffer management
    • H04L1/1841—Resequencing
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
    • H04L1/1829—Arrangements specially adapted for the receiver end
    • H04L1/1848—Time-out mechanisms
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L47/00—Traffic control in data switching networks
    • H04L47/10—Flow control; Congestion control
    • H04L47/34—Flow control; Congestion control ensuring sequence integrity, e.g. using sequence numbers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/08—Access restriction or access information delivery, e.g. discovery data delivery
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/10—Connection setup

Definitions

  • the embodiments of the present application relate to the field of communications, and more specifically, to a method and apparatus for data reception processing of a radio link control layer.
  • the Radio Link Control (RLC) layer of the communication system supports three modes: Transparent Mode (TM), Unacknowledged Mode (UM), and Acknowledged Mode (AM).
  • the RLC entity does not perform any processing on the Service Data Unit (SDU) under the Packet Data Convergence Protocol (PDCP) layer in the TM mode, and directly delivers to the Media Access Control. , MAC) layer.
  • SDU Service Data Unit
  • PDCP Packet Data Convergence Protocol
  • MAC Media Access Control
  • the RLC receiver does not feed back the received RLC Protocol Data Unit (PDU).
  • PDU Packet Data Convergence Protocol
  • AM the RLC receiver performs feedback confirmation on the received RLC PDU.
  • the RLC receiver needs to deliver the RLC SDU in order, which mainly depends on the sequence number (SN) and RLC in the header of the RLC PDU.
  • the sorting window at the receiving end is implemented.
  • the SN of each RLC PDU carries the SN.
  • the sorting window corresponds to a reordering timer.
  • the RLC layer (UM mode and AM mode) will no longer support the Concatenation SDU function, but still have the Segmentation SDU function.
  • the present application provides a method for data reception processing of a radio link control layer to satisfy a new wireless The need for communication systems and the simplification of communication systems.
  • a first aspect provides a method for data reception processing of a radio link control layer, comprising: receiving a target Radio Link Control (RLC) protocol data unit (Protocol Data Unit, PDU); if the target RLC The data field of the PDU includes only one complete segment of a complete RLC (Service Data Unit, SDU), and the target is operated according to the current running state of the reload timer corresponding to the value of the sequence number SN included in the target RLC PDU.
  • RLC Radio Link Control
  • the RLC PDU is processed, or the RLC PDU is discarded, wherein the target RLC PDU is one of a plurality of RLC PDUs, and the values of the SNs included in the plurality of RLC PDUs are the same, and the plurality of RLC PDUs can be Reloading into the complete RLC SDU,
  • the current operational state is one of the following operational states: an unactivated state, a chrono state, and a timeout state.
  • the data receiving processing method of the radio link control layer of the present application in the case that the receiving end device determines that the data field of the received RLC PDU includes only one complete RLC SDU, the receiving end device is included according to the received RLC PDU.
  • the reload timer corresponding to the value of the SN processes the RLC PDU or discards the RLC PDU, and can be applied to a new wireless communication system that does not support SDU cascading and SDU delivery in sequence, and can simplify the implementation of the communication system.
  • the method further includes: if the data domain of the target RLC SDU includes only the complete RLC SDU, reloading the target RLC PDU, The SN is not included in the target RLC PDU.
  • the method further includes: determining, according to a value of the SN included in the target RLC PDU, the reload timer.
  • Different SN values correspond to different reload timers, and the receiving end device needs to maintain multiple reload timers.
  • the current running state of the reloading timer is an unopened state
  • the processing according to the current running state of the reload timer corresponding to the value of the sequence number SN included in the target RLC PDU, processing the target RLC PDU, including: enabling the reload timer; The reloading timer expires, and the RLC PDUs that have been received before the reload timer timeout time in the plurality of RLC PDUs are discarded, and the received RLC PDU includes the target RLC PDU.
  • the method Before the reloading timer is started, the method further includes: determining that the target RLC PDU is the RLC PDU received by the first one of the plurality of RLC PDUs.
  • the method before the reloading timer is started, the method further includes: determining a cut included in a data domain of the target RLC PDU The segment is not adjacent to a slice segment included in a data field of any RLC PDU before the reception time of the target RLC PDU in the plurality of RLC PDUs.
  • the current running state of the reloading timer is a timing state
  • the processing according to the current running state of the reload timer corresponding to the value of the sequence number SN included in the target RLC PDU, processing the target RLC PDU, including: if it is determined that the target RLC PDU is received before Receiving, among the plurality of RLC PDUs, other RLC PDUs other than the target RLC PDU, reassembling the plurality of RLC PDUs, and stopping the reload timer.
  • the current operating state of the reload timer corresponding to the value of the sequence number SN included in the target RLC PDU is The processing of the target RLC PDU further includes: determining, if it is determined that only a part of the RLC PDUs of the plurality of RLC PDUs other than the target RLC PDU are received before receiving the target RLC PDU, determining the reload timer Whether it is timed out; if it is determined that the reloading timer expires, discarding RLC PDUs that have been received before the reloading timer timeout in the plurality of RLC PDUs, the received RLC PDU includes the Target RLC PDU.
  • the target is in the current running state of the reload timer corresponding to the value of the sequence number SN included in the target RLC PDU.
  • the method further includes: storing the target RLC PDU in a cache.
  • the method before the storing the target RLC PDU in the cache, the method further includes: determining that the target RLC PDU is the first time Received.
  • the current running state of the reloading timer is a timeout state
  • the processing by the current running state of the reload timer corresponding to the value of the sequence number SN included in the target RLC PDU, processing the target RLC PDU, including: discarding the Target RLC PDU.
  • the method before the discarding the target RLC PDU, the method further includes: determining that the target RLC PDU is not received for the first time.
  • an apparatus for performing the method of any of the above-described first aspect or any of the possible implementations of the first aspect.
  • the device comprises functional modules for performing the method of any of the first aspect or the first aspect of the first aspect described above.
  • an apparatus in a third aspect, includes a processor, a memory, and a transceiver.
  • the processor, the memory, and the transceiver communicate with each other through an internal connection path, transmitting control and/or data signals, such that the device performs the first aspect or any of the possible implementations of the first aspect Methods.
  • a computer readable medium for storing a computer program, the computer program comprising instructions for performing the first aspect or any of the possible implementations of the first aspect.
  • a computer program product comprising instructions for performing wireless in any of the above-described first aspect or any of the possible implementations of the first aspect when the computer runs the finger of the computer program product A method of data reception processing of the link control layer.
  • the computer program product can be run on the device of the second or third aspect described above.
  • FIG. 1 is a schematic diagram of an RLC PDU according to an embodiment of the present application.
  • FIG. 2 is a schematic flowchart of a method of data receiving processing of a radio link control layer according to an embodiment of the present application.
  • FIG. 3 is a schematic block diagram of a device in accordance with an embodiment of the present application.
  • FIG. 4 is a schematic block diagram of a device in accordance with another embodiment of the present application.
  • CDMA Code Division Multiple Access
  • WCDMA Wideband Code Division Multiple Access
  • GPRS General Packet Radio Service
  • LTE Long Term Evolution
  • FDD Frequency Division Duplex
  • TDD Time Division Duplex
  • UMTS Universal Mobile Telecommunication System
  • WiMAX Worldwide Interoperability for Microwave Access, WiMAX
  • the receiving end device may be a network device or a terminal device.
  • the terminal device may include, but is not limited to, a mobile station (Mobile Station, MS), a mobile terminal (Mobile Terminal), a mobile phone (Mobile Telephone), a user equipment (User Equipment, UE), and a mobile phone (handset).
  • a portable device, a vehicle, etc. the terminal device can communicate with one or more core networks via a Radio Access Network (RAN), for example, the terminal device can be a mobile phone (or Known as "cellular" telephones, computers with wireless communication capabilities, etc., the terminal devices can also be portable, pocket-sized, handheld, computer-integrated or in-vehicle mobile devices.
  • RAN Radio Access Network
  • the network device involved in the embodiment of the present application is a device deployed in a radio access network to provide a wireless communication function for a terminal device.
  • the network device may be a base station, and the base station may include various forms of macro base stations, micro base stations, relay stations, access points, and the like.
  • the names of devices with base station functionality may vary.
  • an Evolved NodeB eNB or eNodeB
  • 3G 3rd Generation
  • the network device can also be a core network device.
  • the Radio Link Control (RLC) Acknowledged Mode (AM) and the RLC Unacknowledged Mode (UM) will no longer support the service data unit (
  • the Cascading of Service Data Units (SDUs) still retains the SDP's Segmentation function.
  • the NR RLC PDU will only have the following four cases as shown in Figure 1: a) one RLC PDU includes a single complete RLC SDU; b) one RLC PDU includes a single RLC SDU cutting segment, the cut The segment is located at the front of the RLC SDU; c) one RLC PDU includes a cut segment of a unique RLC SDU that is located in the middle of the RLC SDU; d) one RLC PDU includes the only one A cutting segment of an RLC SDU located at the rear of the RLC SDU. And NR RLC UM and NR RLCAM will no longer support the sequential delivery function of RLC SDU.
  • the method of RLC layer data reception processing in the LTE system will not be applicable to the NR system. Therefore, it is necessary to provide a data receiving processing method of the RLC layer, which is suitable for a new wireless communication system and can simplify the implementation of the communication system.
  • the method 100 includes:
  • the current operational state is one of the following operational states: an unactivated state, a chrono state, and a timeout state.
  • the cutting segment of a complete RLC SDU in the embodiment of the present application can be understood as that the switching segment is one of a plurality of portions obtained after the complete RLC SDU is cut.
  • the sending end device and the receiving end device may perform an agreement in advance: if the data domain of one RLC PDU includes only one complete RLC SDU, the RLC PDU does not need to include the SN. After receiving the target RLC PDU, the receiving device directly reloads the target RLC PDU. If the data field of an RLC PDU includes only one complete segment of the RLC PDU, the SN needs to be included in the RLC PDU. And the values of the SNs included in the plurality of RLC PDUs including different cut segments of a complete RLC SDU in the data domain are the same.
  • a complete RLC SDU is cut into three cutting segments, namely a cutting segment 1, a cutting segment 2 and a cutting segment 3, wherein the cutting segment 1 is located at the front of the complete RLC SDU and the cutting segment 2 is located.
  • the sender device needs to generate 3 RLC PDUs, which are respectively RLC PDU1 including the segment 1 of the data segment, RLC PDU2 including the segment 2 in the data field, and RLC PDU3 including the segment 3 in the data field, among the 3 RLC PDUs.
  • the value of SN is the same.
  • the length of the SN may be the same as the length of the SN in the prior art.
  • the length of the SN can be determined to be 5 bits or 10 bits.
  • the length of the selected SN is 5 bits or 10 bits according to the transmission requirements of the data carried in the RLC SDU.
  • the length of the SN can only be one, that is, the length of the SN is independent of the transmission requirements of the data carried in one of the cutting segments of the RLC SDU.
  • the sender device and the receiver device can agree on the length of the SN in advance, or if the receiver device is a terminal device and the sender device is a network device, the network device can notify the length of the terminal device SN through high layer signaling.
  • the receiving end device configures multiple Re-Assembly Timers, and the SN takes different values corresponding to different re-installation timers.
  • the sending end device and the receiving end device may also perform the following convention: if the receiving end device determines that the reload timer corresponding to the value of one SN is super (or invalid), all RLCs corresponding to the value of the SN are not received. The PDU, the receiving device will discard the RLC PDU received before the reload timer expires corresponding to the value of this SN.
  • the receiving device If it is determined that the reload timer corresponding to the value of one SN has timed out, and all the RLC PDUs corresponding to the value of the SN are received, the receiving device reloads all the RLC PDUs and stops the reload timer.
  • the receiving end device receives the target RLC PDU, the current running state of the reloading timer corresponding to the value of the SN included in the target RLC PDU is not enabled, and receiving The end device needs to enable the reload timer, and if it is determined that the reload timer expires, discard the RLC PDUs that have been received before the reload timer timeout time in the multiple RLC PDUs.
  • the target RLC PDU is included in the RLC PDU that has been received.
  • the receiving end device determines that the target RLC PDU is the RLC PDU received by the first one of the multiple RLC PDUs before the reloading timer is turned on.
  • a complete RLC SDU is cut into three cutting segments, a cutting segment 1, a cutting segment 2, and a cutting segment 3.
  • the sender device needs to generate 3 RLC PDUs, which are respectively RLC PDU1 including the segment 1 of the data segment, RLC PDU2 including the segment 2 in the data field, and RLC PDU3 including the segment 3 in the data field, among the 3 RLC PDUs.
  • the value of SN is the same. If the receiving device determines that RLC PDU1 and RLC PDU3 are not received before receiving the RLC PDU2, the reload timer is turned on.
  • the receiving end device determines, before the reloading timer is turned on, the cutting segment included in the data domain of the target RLC PDU and the receiving moment in the multiple RLC PDUs Any RLC PDU before the reception time of the target RLC PDU
  • the cutting segments included in the data field are not adjacent.
  • a complete RLC SDU needs to be divided into five successively adjacent cutting segments, in turn, a cutting segment 1, a cutting segment 2, a cutting segment 3, a cutting segment 4, and a cutting segment 5.
  • the transmitting device needs to generate 5 RLC PDUs, respectively, the data domain includes the RLC PDU 1 of the cutting segment 1, the data domain includes the RLC PDU 2 of the cutting segment 2, and the data domain includes the RLC PDU 3 of the cutting segment 3, and the data field includes the cutting segment 4
  • the RLC PDU4 and data fields include the RLC PDU5 that cuts segment 5.
  • the target RLC PDU is RLC PDU4
  • the cutting segment in the RLC PDU4 is neither adjacent to the cutting segment in the RLC PDU1 nor in the RLC PDU1.
  • the cutting segments in the RLC PDU 2 are adjacent, and the receiving device turns on the reload timer. If the receiving device has received RLC PDU1, RLC PDU2, and RLC PDU3 before receiving the RLC PDU4, the reload timer is not turned on.
  • the receiving end device if the receiving end device receives the target RLC PDU, the current running state of the reloading timer corresponding to the value of the SN included in the target RLC PDU is a timing state, and the receiving end device Determining whether other RLC PDUs other than the target RLC PDU of the plurality of RLC PDUs have been received before receiving the target RLC PDU. If it is determined that the RLC PDUs other than the target RLC PDU of the plurality of RLC PDUs have been received before receiving the target RLC PDU, reassembling the plurality of RLC PDUs, and stopping the reassembly timing Device.
  • the receiving end device determines whether the reloading timer expires, if it is determined The reloading timer expires, and the RLC PDUs that have been received before the reload timer timeout time in the plurality of RLC PDUs are discarded, and the received RLC PDU includes the target RLC PDU.
  • the receiving end device processes the target RLC PDU according to the current operating state of the reload timer corresponding to the value of the sequence number SN included in the target RLC PDU.
  • the target RLC PDU is stored in the cache.
  • the receiving end device determines whether the target RLC PDU is received for the first time, or determines whether the target RLC PDU is a duplicate PDU. If it is determined that the target RLC PDU is received for the first time, the target RLC PDU is stored in the buffer, otherwise the target RLC PDU is discarded.
  • the receiving end device if the receiving end device receives the target RLC PDU, the current running state of the reload timer corresponding to the value of the SN included in the target RLC PDU is a timeout state, and the receiving end device directly discards the target RLC PDU.
  • the transceiver module 11 is configured to receive a target radio link control RLC protocol data unit PDU;
  • the processing module 12 is configured to: if it is determined that the data field of the target RLC PDU includes only one cut segment of a complete RLC service data unit SDU, according to the reassembly timing corresponding to the value of the sequence number SN included in the target RLC PDU.
  • the current operating state of the device processes the target RLC PDU or discards the RLC PDU, wherein the target RLC PDU is one of a plurality of RLC PDUs, and the values of the SNs included in the plurality of RLC PDUs are the same
  • the plurality of RLC PDUs can be reassembled into the complete RLC SDU, and the current operating state is one of the following operating states: an unactivated state, a chrono state, and a timeout state.
  • the device determines that the data field of the received RLC PDU includes only one complete RLC SDU, the RLC is corresponding to the reload timer corresponding to the value of the SN included in the received RLC PDU.
  • the PDU is processed, or the RLC PDU is discarded, which can be applied to a new wireless communication system that does not support SDU cascading and SDU delivery in sequence, and can simplify the implementation of the communication system.
  • the processing module 12 is further configured to: re-install the target RLC PDU, if the data domain of the target RLC PDU is determined to include only the complete RLC SDU, the target The SN is not included in the RLC PDU.
  • the processing module 12 is further configured to: determine, according to a value of the SN included in the target RLC PDU, the reload timer.
  • the current running state of the reload timer is an unopened state
  • the processing module 12 is specifically configured to:
  • the processing module 12 is further configured to: when the weight is turned on Before installing the timer, determining that the target RLC PDU is the first RLC PDU received by the plurality of RLC PDUs.
  • the processing module 12 is further configured to: before starting the reloading timer, determining a cutting segment included in a data domain of the target RLC PDU and the multiple RLCs The slice segments included in the data field of any RLC PDU before the reception time of the target RLC PDU are not adjacent in the PDU.
  • the current running state of the reloading timer is a timing state
  • the processing module 12 is specifically configured to: if it is determined that the transceiver module 11 has received the RLC PDUs other than the target RLC PDUs in the multiple RLC PDUs before receiving the target RLC PDU, The plurality of RLC PDUs are loaded and the reload timer is stopped.
  • processing module 12 is further configured to:
  • the transceiver module 11 determines whether the reload timer expires;
  • the processing module 12 is further configured to: target the RLC according to a current running state of the reload timer corresponding to the value of the sequence number SN included in the target RLC PDU.
  • the target RLC PDU is stored in the cache before the PDU is processed.
  • the processing module 12 is further configured to: before the storing the target RLC PDU in the cache, determine that the target RLC PDU is received for the first time.
  • the current running state of the reload timer is a timeout state
  • the processing module 12 is specifically configured to: discard the target RLC PDU.
  • the processing module 12 is further configured to: before discarding the target RLC PDU, determine that the target RLC PDU is not received for the first time.
  • the device according to the embodiment of the present application may refer to the process of the method 100 corresponding to the embodiment of the present application, and the respective units/modules in the device and the other operations and/or functions described above are respectively implemented in order to implement the corresponding processes in the method 100. , will not repeat them here.
  • FIG. 4 shows an apparatus in accordance with another embodiment of the present application.
  • the device 100 includes a processor 110 and a transceiver 120.
  • the processor 110 is coupled to the transceiver 120.
  • the device 100 further includes a memory 130, and the memory 130 is coupled to the processor 110.
  • the processor 110, the memory 130, and the transceiver 120 can communicate with each other through an internal connection path.
  • the transceiver 120 is configured to receive a target radio link control RLC protocol data unit PDU.
  • the processor 110 is configured to: if the data domain of the target RLC PDU is determined to include only one complete RLC service data.
  • the target RLC PDU is one of a plurality of RLC PDUs, the SNs included in the plurality of RLC PDUs have the same value, and the plurality of RLC PDUs can be reassembled into the complete RLC SDU, the current running state It is one of the following operating states: the unstarted state, the chrono state, and the timeout state.
  • the device determines that the data field of the received RLC PDU includes only one complete RLC SDU, the RLC is corresponding to the reload timer corresponding to the value of the SN included in the received RLC PDU.
  • the PDU is processed, or the RLC PDU is discarded, which can be applied to a new wireless communication system that does not support SDU cascading and SDU delivery in sequence, and can simplify the implementation of the communication system.
  • the device 100 may refer to the device 10 corresponding to the embodiment of the present application, and the respective units/modules in the device and the other operations and/or functions described above are respectively implemented in order to implement the corresponding processes in the method 100, for the sake of brevity. I will not repeat them here.
  • the processor of the embodiment of the present application may be an integrated circuit chip with signal processing capability.
  • each step of the foregoing method embodiment may be completed by an integrated logic circuit of hardware in a processor or an instruction in a form of software.
  • the processor may be a general-purpose processor, a digital signal processor (DSP), an application specific integrated circuit (ASIC), a Field Programmable Gate Array (FPGA), or the like. Programming logic devices, discrete gates or transistor logic devices, discrete hardware components.
  • the methods, steps, and logical block diagrams disclosed in the embodiments of the present invention may be implemented or carried out.
  • the general purpose processor may be a microprocessor or the processor or any conventional processor or the like.
  • the steps of the method disclosed in the embodiments of the present invention may be directly implemented by the hardware decoding processor, or may be performed by a combination of hardware and software modules in the decoding processor.
  • Software modules can be located in random access memory, flash memory, read-only memory, programmable read-only Memory or electrically erasable programmable memory, registers, etc. are well established in the field of storage media.
  • the storage medium is located in the memory, and the processor reads the information in the memory and combines the hardware to complete the steps of the above method.
  • the memory in the embodiments of the present invention may be a volatile memory or a non-volatile memory, or may include both volatile and non-volatile memory.
  • the non-volatile memory may be a read-only memory (ROM), a programmable read only memory (PROM), an erasable programmable read only memory (Erasable PROM, EPROM), or an electric Erase programmable read only memory (EEPROM) or flash memory.
  • the volatile memory can be a Random Access Memory (RAM) that acts as an external cache.
  • RAM Random Access Memory
  • many forms of RAM are available, such as static random access memory (SRAM), dynamic random access memory (DRAM), synchronous dynamic random access memory (Synchronous DRAM).
  • SDRAM Double Data Rate SDRAM
  • DDR SDRAM Double Data Rate SDRAM
  • ESDRAM Enhanced Synchronous Dynamic Random Access Memory
  • SLDRAM Synchronous Connection Dynamic Random Access Memory
  • DR RAM direct memory bus random access memory
  • the embodiment of the present application further provides a computer program product comprising instructions, when the computer runs the finger of the computer program product, the computer performs a method for data reception processing of a radio link control layer of the foregoing method embodiment.
  • the computer program product can run on the device described above.
  • the disclosed systems, devices, and The method can be implemented in other ways.
  • the device embodiments described above are merely illustrative.
  • the division of the unit is only a logical function division.
  • there may be another division manner for example, multiple units or components may be combined or Can be integrated into another system, or some features can be ignored or not executed.
  • the mutual coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interface, device or unit, and may be in an electrical, mechanical or other form.
  • the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of the embodiment.
  • each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.
  • the functions may be stored in a computer readable storage medium if implemented in the form of a software functional unit and sold or used as a standalone product.
  • the technical solution of the present application which is essential or contributes to the prior art, or a part of the technical solution, may be embodied in the form of a software product, which is stored in a storage medium, including
  • the instructions are used to cause a computer device (which may be a personal computer, server, or network device, etc.) to perform all or part of the steps of the methods described in various embodiments of the present application.
  • the foregoing storage medium includes: a U disk, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk, and the like. .

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Abstract

本申请提供一种无线链路控制层的数据接收处理的方法和设备，该方法包括：接收目标RLC PDU；若目标RLC PDU的数据域仅包括一个完整的RLC SDU的一个切割段，根据目标RLC PDU中包括的序列号SN的值对应的重装定时器的当前运行状态对目标RLC PDU进行处理，或丢弃RLC PDU，目标RLC PDU为多个RLC PDU中的一个，多个RLC PDU中包括的SN的值相同，多个RLC PDU能够被重装成完整的RLC SDU，当前运行状态为下列运行状态中的一种：未被启动状态、计时状态和超时状态。本申请提供的方法，适用于不支持SDU级联和按序递交的无线通信系统，并能简化通信系统的实现。

Description

无线链路控制层的数据接收处理的方法和设备 技术领域
本申请实施例涉及通信领域，并且更具体地，涉及无线链路控制层的数据接收处理的方法和设备。
背景技术
通信系统的无线链路控制(Radio Link Control，RLC)层支持透明模式(Transparent Mode，TM)、非确认(Unacknowledged Mode，UM)和确认模式(Acknowledged Mode，AM)三种模式。其中，在TM模式下RLC实体不会对分组数据汇聚协议(Packet Data Convergence Protocol，PDCP)层下来的服务数据单元(Service Data Unit，SDU)进行任何处理，直接递交到介质访问控制(Media Access Control，MAC)层。在UM模式下，RLC接收端不会对接收到的RLC协议数据单元(Protocol Data Unit，PDU)进行反馈。在AM模式下，RLC接收端会对接收到的RLC PDU进行反馈确认。
在长期演进(Long Term Revolution，LTE)系统中，在UM模式和AM模式下，RLC接收端需要按序递交RLC SDU，这主要靠RLC PDU的包头中的序列号(Sequence Number，SN)以及RLC接收端的排序窗口来实现。每个RLC PDU的包头中都携带SN，RLC PDU的包头中的SN的长度会影响到接收端的排序窗口的大小，比如SN＝5bits，则接收端维护的排序窗口的大小为25/2。排序窗口会对应一个重排序计时器(Timer)，一般来说，当接收到一个RLC PDU的SN的取值不在该排序窗口内(或者在该排序窗口内，但是取值小于这个RLC PDU的SN的取值的SN对应的RLC PDU没有接收到)时，重排序Timer就会启动，当Timer失效时，丢弃相应的RLC PDU。
在新无线通信(New Radio，NR)系统中RLC层(UM模式和AM模式)将不再支持级联(Concatenation)SDU功能，但仍具有切割(Segmentation)SDU功能。
由此，需要提供一种无线链路控制层的数据接收处理的方法，满足新的无线通信系统的需求，并能简化通信系统的实现。
发明内容
本申请提供一种无线链路控制层的数据接收处理的方法，满足新的无线 通信系统的需求，并能简化通信系统的实现。
第一方面，提供了一种无线链路控制层的数据接收处理的方法，包括：接收目标无线链路控制(Radio Link Control，RLC)协议数据单元Protocol Data Unit，PDU)；若所述目标RLC PDU的数据域仅包括一个完整的RLC(Service Data Unit，SDU)的一个切割段，根据所述目标RLC PDU中包括的序列号SN的值对应的重装定时器的当前运行状态对所述目标RLC PDU进行处理，或丢弃所述RLC PDU，其中，所述目标RLC PDU为多个RLC PDU中的一个，所述多个RLC PDU中包括的SN的值相同，所述多个RLC PDU能够被重装成所述完整的RLC SDU，所述当前运行状态为下列运行状态中的一种：未被启动状态、计时状态和超时状态。
本申请的无线链路控制层的数据接收处理方法，在接收端设备判断接收到的RLC PDU的数据域仅包括一个完整的RLC SDU的情况下，接收端设备根据接收到的RLC PDU中包括的SN的值对应的重装定时器对该RLC PDU进行处理，或者丢弃该RLC PDU，能够适用于不支持SDU级联以及SDU按序递交的新无线通信系统，并能简化通信系统的实现。
结合第一方面，在第一方面的一种实现方式中，所述方法还包括：若所述目标RLC SDU的数据域仅包括所述完整的RLC SDU，重装所述目标RLC PDU，所述目标RLC PDU中不包括SN。
结合第一方面及其上述实现方式，在第一方面的另一实现方式中，所述方法还包括：根据所述目标RLC PDU中包括的SN的值，确定所述重装定时器。
不同的SN的值对应不同的重装定时器，接收端设备需要维护多个重装定时器。
结合第一方面及其上述实现方式，在第一方面的另一实现方式中，所述重装定时器的当前运行状态为未被开启状态；
其中，所述根据所述目标RLC PDU中包括的序列号SN的值对应的重装定时器的当前运行状态对所述目标RLC PDU进行处理，包括：开启所述重装定时器；若确定所述重装定时器超时，丢弃所述多个RLC PDU中在所述重装定时器超时时刻之前已被接收的RLC PDU，所述已被接收的RLC PDU中包括所述目标RLC PDU。
结合第一方面及其上述实现方式，在第一方面的另一实现方式中，在开 启所述重装定时器之前，所述方法还包括：确定所述目标RLC PDU为所述多个RLC PDU中第一个被接收到的RLC PDU。
结合第一方面及其上述实现方式，在第一方面的另一实现方式中，在开启所述重装定时器之前，所述方法还包括：确定所述目标RLC PDU的数据域中包括的切割段与所述多个RLC PDU中接收时刻在所述目标RLC PDU的接收时刻之前的任一RLC PDU的数据域中包括的切割段不相邻。
结合第一方面及其上述实现方式，在第一方面的另一实现方式中，所述重装定时器的当前运行状态为计时状态；
其中，所述根据所述目标RLC PDU中包括的序列号SN的值对应的重装定时器的当前运行状态对所述目标RLC PDU进行处理，包括：若确定接收到所述目标RLC PDU之前已经接收到所述多个RLC PDU中除所述目标RLC PDU之外的其他RLC PDU，重装所述多个RLC PDU，并停止所述重装定时器。
结合第一方面及其上述实现方式，在第一方面的另一实现方式中，所述根据所述目标RLC PDU中包括的序列号SN的值对应的重装定时器的当前运行状态对所述目标RLC PDU进行处理，还包括：若确定接收到所述目标RLC PDU之前只接收到所述多个所有RLC PDU中除所述目标RLC PDU之外的部分RLC PDU，确定所述重装定时器是否超时；若确定所述重装定时器超时，丢弃所述多个RLC PDU中在所述重装定时器超时时刻之前已被接收的RLC PDU，所述已被接收的RLC PDU中包括所述目标RLC PDU。
结合第一方面及其上述实现方式，在第一方面的另一实现方式中，在根据所述目标RLC PDU中包括的序列号SN的值对应的重装定时器的当前运行状态对所述目标RLC PDU进行处理之前，所述方法还包括：将所述目标RLC PDU存入缓存中。
结合第一方面及其上述实现方式，在第一方面的另一实现方式中，在将所述目标RLC PDU存入缓存中之前，所述方法还包括：确定所述目标RLC PDU是第一次被接收到。
结合第一方面及其上述实现方式，在第一方面的另一实现方式中，所述重装定时器的当前运行状态为超时状态；
其中，所述根据所述目标RLC PDU中包括的序列号SN的值对应的重装定时器的当前运行状态对所述目标RLC PDU进行处理，包括：丢弃所述 目标RLC PDU。
结合第一方面及其上述实现方式，在第一方面的另一实现方式中，在丢弃所述目标RLC PDU之前，所述方法还包括：确定所述目标RLC PDU不是第一次被接收到。
第二方面，提供了一种设备，用于执行上述第一方面或第一方面的任意可能的实现方式中的方法。具体地，所述设备包括用于执行上述第一方面或第一方面的任意可能的实现方式中的方法的功能模块。
第三方面，提供了一种设备，包括处理器、存储器和收发器。所述处理器、所述存储器和所述收发器之间通过内部连接通路互相通信，传递控制和/或数据信号，使得所述设备执行上述第一方面或第一方面的任意可能的实现方式中的方法。
第四方面，提供了一种计算机可读介质，用于存储计算机程序，所述计算机程序包括用于执行上述第一方面或第一方面的任意可能的实现方式中的指令。
第五方面，提供了一种包括指令的计算机程序产品，当计算机运行所述计算机程序产品的所述指时，所述计算机执行上述第一方面或第一方面的任意可能的实现方式中的无线链路控制层的数据接收处理的方法。具体地，该计算机程序产品可以运行于上述第二方面或第三方面的设备上。
附图说明
图1是根据本申请实施例的RLC PDU的示意图。
图2是根据本申请实施例的无线链路控制层的数据接收处理的方法的示意性流程图。
图3是根据本申请实施例的设备的示意性框图。
图4是根据本申请另一实施例的设备的示意性框图。
具体实施方式
下面将结合本申请实施例中的附图，对本申请实施例中的技术方案进行清楚、完整地描述。
应理解，本申请实施例的技术方案可以应用于各种通信系统，例如：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)系统、通用分组无线业务(General Packet Radio Service，GPRS)、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)、通用移动通信系统(Universal Mobile Telecommunication System，UMTS)或全球互联微波接入(Worldwide Interoperability for Microwave Access，WiMAX)通信系统、5G系统，或者说新无线(New Radio，NR)系统。
在本申请实施例中，接收端设备可以为网络设备或终端设备。
在本申请实施例中，终端设备可以包括但不限于移动台(Mobile Station，MS)、移动终端(Mobile Terminal)、移动电话(Mobile Telephone)、用户设备(User Equipment，UE)、手机(handset)及便携设备(portable equipment)、车辆(vehicle)等，该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进行通信，例如，终端设备可以是移动电话(或称为“蜂窝”电话)、具有无线通信功能的计算机等，终端设备还可以是便携式、袖珍式、手持式、计算机内置的或者车载的移动装置。
本申请实施例所涉及到的网络设备是一种部署在无线接入网中用以为终端设备提供无线通信功能的装置。所述网络设备可以为基站，所述基站可以包括各种形式的宏基站，微基站，中继站，接入点等。在采用不同的无线接入技术的系统中，具有基站功能的设备的名称可能会有所不同。例如在LTE网络中，称为演进的节点B(Evolved NodeB，eNB或eNodeB)，在第三代(3rd Generation，3G)网络中，称为节点B(Node B)等等。所述网络设备还可以为核心网设备。
新无线通信(New Radio，NR)系统中，无线链路控制(Radio Link Control，RLC)确认模式(Acknowledged Mode，AM)和RLC非确认模式(Unacknowledged Mode，UM)将不再支持服务数据单元(Service Data Unit，SDU)的级联而仍然保留SDU的切割(Segmentation)功能。这意味着NR RLC PDU将只能有图1中示出的以下四种情况：a)一个RLC PDU包括唯一一个完整的RLC SDU；b)一个RLC PDU包括唯一一个RLC SDU的切割段，该切割段位于该RLC SDU的前部；c)一个RLC PDU包括唯一一个RLC SDU的切割段，该切割段位于该RLC SDU的中部；d)一个RLC PDU包括唯一 一个RLC SDU的切割段，该切割段位于该RLC SDU的后部。并且NR RLC UM和NR RLCAM将不再支持RLC SDU的按序递交功能。
LTE系统中的RLC层数据接收处理的方法将不能适用于NR系统。因此需要提供一种RLC层的数据接收处理方法，适用于新的无线通信系统，并能简化通信系统的实现。
图2示出了根据本申请实施例的无线链路层的数据接收处理的方法100，方法100可以由接收端设备执行。如图2所示，方法100包括：
S110，接收目标无线链路控制RLC协议数据单元PDU；
S120，若所述目标RLC PDU的数据域仅包括一个完整的RLC SDU的一个切割段，根据所述目标RLC PDU中包括的序列号SN的值对应的重装定时器的当前运行状态对所述目标RLC PDU进行处理，或丢弃所述RLC PDU，其中，所述目标RLC PDU为多个RLC PDU中的一个，所述多个RLC PDU中包括的SN的值相同，所述多个RLC PDU能够被重装成所述完整的RLC SDU，所述当前运行状态为下列运行状态中的一种：未被启动状态、计时状态和超时状态。
需要说明的是，本申请实施例中一个完整的RLC SDU的切割段可以理解为这个切换段是这个完整的RLC SDU被切割后得到的多个部分中的一个部分。
在本申请实施例中，可选地，发送端设备和接收端设备可以事先进行如下约定：如果一个RLC PDU的数据域中只包括一个完整的RLC SDU，则这个RLC PDU中不需要包括SN，接收端设备接收到目标RLC PDU之后，直接重装目标RLC PDU。如果一个RLC PDU的数据域中只包括一个完整的RLC PDU的切割段，这个RLC PDU中需要包括SN。并且数据域中包括一个完整的RLC SDU的不同切割段的多个RLC PDU中包括的SN的值相同。
举例来说，一个完整的RLC SDU被切割为3个切割段，分别为切割段1、切割段2和切割段3，其中，切割段1位于该完整的RLC SDU的前部、切割段2位于该完整的RLC SDU的中部、切割段3位于该完整的RLC SDU的后部。发送端设备需要生成3个RLC PDU，分别为数据域分包括切割段1的RLC PDU1、数据域包括切割段2的RLC PDU2和数据域包括切割段3的RLC PDU3，这3个RLC PDU中的SN的值相同。
进一步地，SN的长度可以与现有技术中的SN的长度相同。例如，SN 的长度可以有两种：5bits和10bits，发送端设备根据RLC SDU中承载的数据的传输要求确定选择SN的长度为5bits还是10bits。或则SN的长度只能有一种，也就是说，SN的长度与RLC SDU的一个切割段中承载的数据的传输要求无关。在这种情况下，发送端设备和接收端设备可以事先约定SN的长度，或者如果接收端设备为终端设备，发送端设备为网络设备，网络设备可以通过高层信令告知终端设备SN的长度。
在本申请实施例中，可选地，接收端设备配置多个重装定时器(Re-Assembly Timer)，SN取不同的值对应不同的重装定是器。发送端设备和接收端设备还可以事先进行如下约定：如果接收端设备确定在一个SN的值对应的重装定时器超(或者说失效)时，未接收完这个SN的值对应的所有的RLC PDU，接收端设备将会丢弃在该重装定时器超时之前接收到的对应这个SN的值的RLC PDU。如果确定在一个SN的值对应的重装定时器超时，接收完这个SN的值对应的所有的RLC PDU，接收端设备重装所述所有的RLC PDU，并停止该重装定时器。
可选地，在S120中，如果接收端设备接收到所述目标RLC PDU时，与所述目标RLC PDU中包括的SN的值对应的重装定时器的当前运行状态为未被开启状态，接收端设备需要开启所述重装定时器，如果确定所述重装定时器超时，则丢弃所述多个RLC PDU中接收时刻在所述重装定时器超时时刻之前已被接收的RLC PDU，所述已被接收的RLC PDU中包括所述目标RLC PDU。
具体地，在一些实施例中，接收端设备在开启所述重装定时器之前，确定所述目标RLC PDU为所述多个RLC PDU中第一个被接收到的RLC PDU。
举例来说，一个完整的RLC SDU被切割为3个切割段，分别为切割段1、切割段2和切割段3。发送端设备需要生成3个RLC PDU，分别为数据域分包括切割段1的RLC PDU1、数据域包括切割段2的RLC PDU2和数据域包括切割段3的RLC PDU3，这3个RLC PDU中的SN的值相同。如果接收端设备确定在接收到RLC PDU2之前，没有接收到RLC PDU1和RLC PDU3，则开启重装定时器。
或者，具体地，在另一些实施例中，接收端设备在开启所述重装定时器之前，确定所述目标RLC PDU的数据域中包括的切割段与所述多个RLC PDU中接收时刻在所述目标RLC PDU的接收时刻之前的任一RLC PDU的 数据域中包括的切割段不相邻。
举例来说，假设一个完整的RLC SDU需要被分成5个依次相邻的切割段，依次为切割段1、切割段2、切割段3、切割段4和切割段5。发送端设备需要生成5个RLC PDU，分别为数据域分包括切割段1的RLC PDU 1、数据域包括切割段2的RLC PDU2和数据域包括切割段3的RLC PDU3、数据域包括切割段4的RLC PDU4和数据域包括切割段5的RLC PDU5。假定所述目标RLC PDU为RLC PDU4，如果在接收到RLC PDU4之前，接收端设备已经接收到了RLC PDU1和RLC PDU2，此时RLC PDU4中的切割段既不与RLC PDU1中的切割段相邻也不和RLC PDU2中的切割段相邻，则接收端设备开启所述重装定时器。如果在接收到RLC PDU4之前，接收端设备已经接收到了RLC PDU1、RLC PDU2和RLC PDU3，则不开启所述重装定时器。
可选地，在S120中，如果接收端设备接收到所述目标RLC PDU时，与所述目标RLC PDU中包括的SN的值对应的重装定时器的当前运行状态为计时状态，接收端设备确定在接收到目标RLC PDU之前是否已经接收到了所述多个RLC PDU中除所述目标RLC PDU之外的其他RLC PDU。如果确定在接收到所述目标RLC PDU之前已经接收到所述多个RLC PDU中除所述目标RLC PDU之外的其他RLC PDU，则重装这多个RLC PDU，并停止所述重装定时器。如果确定接收到所述目标RLC PDU之前只接收到所述多个所有RLC PDU中除所述目标RLC PDU之外的部分RLC PDU，接收端设备确定所述重装定时器是否超时，如果确定所述重装定时器超时，丢弃所述多个RLC PDU中在所述重装定时器超时时刻之前已被接收的RLC PDU，所述已被接收的RLC PDU中包括所述目标RLC PDU。
在上述所有实施例中，接收端设备在根据所述目标RLC PDU中包括的序列号SN的值对应的重装定时器的当前运行状态对所述目标RLC PDU进行处理之前，接收端设备将所述目标RLC PDU存入缓存中。
进一步地，接收端设备确定所述目标RLC PDU是否是第一次被接收到，或者说，确定所述目标RLC PDU是否是重复的PDU。如果确定所述目标RLC PDU是第一次被接收到，则将所述目标RLC PDU存入缓存中，否则丢弃所述目标RLC PDU。
可选地，在S120中，如果接收端设备接收到所述目标RLC PDU时，与 所述目标RLC PDU中包括的SN的值对应的重装定时器的当前运行状态为超时状态，则接收端设备直接丢弃所述目标RLC PDU。
以上结合图1和图2详细描述了根据本申请实施例的无线链路控制层的数据接收处理的方法，下面将结合图3详细描述根据本申请实施例的设备，如图3所示，设备10包括：
收发模块11，用于接收目标无线链路控制RLC协议数据单元PDU；
处理模块12，用于若确定所述目标RLC PDU的数据域仅包括一个完整的RLC服务数据单元SDU的一个切割段，根据所述目标RLC PDU中包括的序列号SN的值对应的重装定时器的当前运行状态对所述目标RLC PDU进行处理，或丢弃所述RLC PDU，其中，所述目标RLC PDU为多个RLC PDU中的一个，所述多个RLC PDU中包括的SN的值相同，所述多个RLC PDU能够被重装成所述完整的RLC SDU，所述当前运行状态为下列运行状态中的一种：未被启动状态、计时状态和超时状态。
因此，根据本申请实施例的设备判断接收到的RLC PDU的数据域仅包括一个完整的RLC SDU的情况下，根据接收到的RLC PDU中包括的SN的值对应的重装定时器对该RLC PDU进行处理，或者丢弃该RLC PDU，能够适用于不支持SDU级联以及SDU按序递交的新无线通信系统，并能简化通信系统的实现。
在本申请实施例中，可选地，所述处理模块12还用于：若确定所述目标RLC PDU的数据域仅包括所述完整的RLC SDU，重装所述目标RLC PDU，所述目标RLC PDU中不包括SN。
在本申请实施例中，可选地，所述处理模块12还用于：根据所述目标RLC PDU中包括的SN的值，确定所述重装定时器。
在本申请实施例中，可选地，所述重装定时器的当前运行状态为未被开启状态；
其中，所述处理模块12具体用于：
开启所述重装定时器；
若确定所述重装定时器超时，丢弃所述多个RLC PDU中在所述重装定时器超时时刻之前已被接收的RLC PDU，所述已被接收的RLC PDU中包括所述目标RLC PDU。
在本申请实施例中，可选地，所述处理模块12还用于：在开启所述重 装定时器之前，确定所述目标RLC PDU为所述多个RLC PDU中第一个被接收到的RLC PDU。
在本申请实施例中，可选地，所述处理模块12还用于：在开启所述重装定时器之前，确定所述目标RLC PDU的数据域中包括的切割段与所述多个RLC PDU中接收时刻在所述目标RLC PDU的接收时刻之前的任一RLC PDU的数据域中包括的切割段不相邻。
在本申请实施例中，可选地，所述重装定时器的当前运行状态为计时状态；
其中，所述处理模块12具体用于：若确定所述收发模块11接收到所述目标RLC PDU之前已经接收到所述多个RLC PDU中除所述目标RLC PDU之外的其他RLC PDU，重装所述多个RLC PDU，并停止所述重装定时器。
在本申请实施例中，可选地，所述处理模块12还用于：
若确定所述收发模块11接收到所述目标RLC PDU之前只接收到所述多个所有RLC PDU中除所述目标RLC PDU之外的部分RLC PDU，确定所述重装定时器是否超时；
若确定所述重装定时器超时，丢弃所述多个RLC PDU中在所述重装定时器超时时刻之前已被接收的RLC PDU，所述已被接收的RLC PDU中包括所述目标RLC PDU。
在本申请实施例中，可选地，所述处理模块12还用于：在根据所述目标RLC PDU中包括的序列号SN的值对应的重装定时器的当前运行状态对所述目标RLC PDU进行处理之前，将所述目标RLC PDU存入缓存中。
在本申请实施例中，可选地，所述处理模块12还用于：在将所述目标RLC PDU存入缓存中之前，确定所述目标RLC PDU是第一次被接收到。
在本申请实施例中，可选地，所述重装定时器的当前运行状态为超时状态；
其中，所述处理模块12具体用于：丢弃所述目标RLC PDU。
在本申请实施例中，可选地，所述处理模块12还用于：在丢弃所述目标RLC PDU之前，确定所述目标RLC PDU不是第一次被接收到。
根据本申请实施例的设备可以参照对应本申请实施例的方法100的流程，并且，该设备中的各个单元/模块和上述其他操作和/或功能分别为了实现方法100中的相应流程，为了简洁，在此不再赘述。
图4示出了根据本申请另一实施例的设备。如图4所示，设备100包括处理器110和收发器120，处理器110和收发器120相连，可选地，该设备100还包括存储器130，存储器130与处理器110相连。其中，处理器110、存储器130和收发器120可以通过内部连接通路互相通信。其中，所述收发器120用于，用于接收目标无线链路控制RLC协议数据单元PDU；所述处理器110，用于若确定所述目标RLC PDU的数据域仅包括一个完整的RLC服务数据单元SDU的一个切割段，根据所述目标RLC PDU中包括的序列号SN的值对应的重装定时器的当前运行状态对所述目标RLC PDU进行处理，或丢弃所述RLC PDU，其中，所述目标RLC PDU为多个RLC PDU中的一个，所述多个RLC PDU中包括的SN的值相同，所述多个RLC PDU能够被重装成所述完整的RLC SDU，所述当前运行状态为下列运行状态中的一种：未被启动状态、计时状态和超时状态。
因此，根据本申请实施例的设备判断接收到的RLC PDU的数据域仅包括一个完整的RLC SDU的情况下，根据接收到的RLC PDU中包括的SN的值对应的重装定时器对该RLC PDU进行处理，或者丢弃该RLC PDU，能够适用于不支持SDU级联以及SDU按序递交的新无线通信系统，并能简化通信系统的实现。
根据本申请实施例的设备100可以参照对应本申请实施例的设备10，并且，该设备中的各个单元/模块和上述其他操作和/或功能分别为了实现方法100中的相应流程，为了简洁，在此不再赘述。
应理解，本申请实施例的处理器可能是一种集成电路芯片，具有信号的处理能力。在实现过程中，上述方法实施例的各步骤可以通过处理器中的硬件的集成逻辑电路或者软件形式的指令完成。上述的处理器可以是通用处理器、数字信号处理器(Digital Signal Processor，DSP)、专用集成电路(Application Specific Integrated Circuit，ASIC)、现成可编程门阵列(Field Programmable Gate Array，FPGA)或者其他可编程逻辑器件、分立门或者晶体管逻辑器件、分立硬件组件。可以实现或者执行本发明实施例中的公开的各方法、步骤及逻辑框图。通用处理器可以是微处理器或者该处理器也可以是任何常规的处理器等。结合本发明实施例所公开的方法的步骤可以直接体现为硬件译码处理器执行完成，或者用译码处理器中的硬件及软件模块组合执行完成。软件模块可以位于随机存储器，闪存、只读存储器，可编程只读 存储器或者电可擦写可编程存储器、寄存器等本领域成熟的存储介质中。该存储介质位于存储器，处理器读取存储器中的信息，结合其硬件完成上述方法的步骤。
可以理解，本发明实施例中的存储器可以是易失性存储器或非易失性存储器，或可包括易失性和非易失性存储器两者。其中，非易失性存储器可以是只读存储器(Read-Only Memory，ROM)、可编程只读存储器(Programmable ROM，PROM)、可擦除可编程只读存储器(Erasable PROM，EPROM)、电可擦除可编程只读存储器(Electrically EPROM，EEPROM)或闪存。易失性存储器可以是随机存取存储器(Random Access Memory，RAM)，其用作外部高速缓存。通过示例性但不是限制性说明，许多形式的RAM可用，例如静态随机存取存储器(Static RAM，SRAM)、动态随机存取存储器(Dynamic RAM，DRAM)、同步动态随机存取存储器(Synchronous DRAM，SDRAM)、双倍数据速率同步动态随机存取存储器(Double Data Rate SDRAM，DDR SDRAM)、增强型同步动态随机存取存储器(Enhanced SDRAM，ESDRAM)、同步连接动态随机存取存储器(Synchlink DRAM，SLDRAM)和直接内存总线随机存取存储器(Direct Rambus RAM，DR RAM)。应注意，本文描述的系统和方法的存储器旨在包括但不限于这些和任意其它适合类型的存储器。
本申请实施例还提供一种包括指令的计算机程序产品，当计算机运行所述计算机程序产品的所述指时，所述计算机执行上述方法实施例的无线链路控制层的数据接收处理的方法。具体地，该计算机程序产品可以运行于上述设备上。
本领域普通技术人员可以意识到，结合本文中所公开的实施例描述的各示例的单元及算法步骤，能够以电子硬件、或者计算机软件和电子硬件的结合来实现。这些功能究竟以硬件还是软件方式来执行，取决于技术方案的特定应用和设计约束条件。专业技术人员可以对每个特定的应用来使用不同方法来实现所描述的功能，但是这种实现不应认为超出本申请的范围。
所属领域的技术人员可以清楚地了解到，为描述的方便和简洁，上述描述的系统、装置和单元的具体工作过程，可以参考前述方法实施例中的对应过程，在此不再赘述。
在本申请所提供的几个实施例中，应该理解到，所揭露的系统、装置和 方法，可以通过其它的方式实现。例如，以上所描述的装置实施例仅仅是示意性的，例如，所述单元的划分，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，例如多个单元或组件可以结合或者可以集成到另一个系统，或一些特征可以忽略，或不执行。另一点，所显示或讨论的相互之间的耦合或直接耦合或通信连接可以是通过一些接口，装置或单元的间接耦合或通信连接，可以是电性，机械或其它的形式。
所述作为分离部件说明的单元可以是或者也可以不是物理上分开的，作为单元显示的部件可以是或者也可以不是物理单元，即可以位于一个地方，或者也可以分布到多个网络单元上。可以根据实际的需要选择其中的部分或者全部单元来实现本实施例方案的目的。
另外，在本申请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。
所述功能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，可以存储在一个计算机可读取存储介质中。基于这样的理解，本申请的技术方案本质上或者说对现有技术做出贡献的部分或者该技术方案的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)执行本申请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。
以上所述，仅为本申请的具体实施方式，但本申请的保护范围并不局限于此，任何熟悉本技术领域的技术人员在本申请揭露的技术范围内，可轻易想到变化或替换，都应涵盖在本申请的保护范围之内。因此，本申请的保护范围应所述以权利要求的保护范围为准。

Claims (24)

  1. 一种无线链路控制层的数据接收处理的方法，其特征在于，包括：
    接收目标无线链路控制RLC协议数据单元PDU；
    若所述目标RLC PDU的数据域仅包括一个完整的RLC服务数据单元SDU的一个切割段，根据所述目标RLC PDU中包括的序列号SN的值对应的重装定时器的当前运行状态对所述目标RLC PDU进行处理，或丢弃所述RLC PDU，其中，所述目标RLC PDU为多个RLC PDU中的一个，所述多个RLC PDU中包括的SN的值相同，所述多个RLC PDU能够被重装成所述完整的RLC SDU，所述当前运行状态为下列运行状态中的一种：未被启动状态、计时状态和超时状态。
  2. 根据权利要求1所述的方法，其特征在于，所述方法还包括：
    若所述目标RLC PDU的数据域仅包括所述完整的RLC SDU，重装所述目标RLC PDU，所述目标RLC PDU中不包括SN。
  3. 根据权利要求1所述的方法，其特征在于，所述方法还包括：
    根据所述目标RLC PDU中包括的SN的值，确定所述重装定时器。
  4. 根据权利要求1或3所述的方法，其特征在于，所述重装定时器的当前运行状态为未被开启状态；
    其中，所述根据所述目标RLC PDU中包括的序列号SN的值对应的重装定时器的当前运行状态对所述目标RLC PDU进行处理，包括：
    开启所述重装定时器；
    若确定所述重装定时器超时，丢弃所述多个RLC PDU中在所述重装定时器超时时刻之前已被接收的RLC PDU，所述已被接收的RLC PDU中包括所述目标RLC PDU。
  5. 根据权利要求4所述的方法，其特征在于，在开启所述重装定时器之前，所述方法还包括：
    确定所述目标RLC PDU为所述多个RLC PDU中第一个被接收到的RLC PDU。
  6. 根据权利要求4所述的方法，其特征在于，在开启所述重装定时器之前，所述方法还包括：
    确定所述目标RLC PDU的数据域中包括的切割段与所述多个RLC PDU中接收时刻在所述目标RLC PDU的接收时刻之前的任一RLC PDU的数据 域中包括的切割段不相邻。
  7. 根据权利要求1或3所述的方法，其特征在于，所述重装定时器的当前运行状态为计时状态；
    其中，所述根据所述目标RLC PDU中包括的序列号SN的值对应的重装定时器的当前运行状态对所述目标RLC PDU进行处理，包括：
    若确定接收到所述目标RLC PDU之前已经接收到所述多个RLC PDU中除所述目标RLC PDU之外的其他RLC PDU，重装所述多个RLC PDU，并停止所述重装定时器。
  8. 根据权利要求7所述的方法，其特征在于，所述根据所述目标RLC PDU中包括的序列号SN的值对应的重装定时器的当前运行状态对所述目标RLC PDU进行处理，还包括：
    若确定接收到所述目标RLC PDU之前只接收到所述多个所有RLC PDU中除所述目标RLC PDU之外的部分RLC PDU，确定所述重装定时器是否超时；
    若确定所述重装定时器超时，丢弃所述多个RLC PDU中在所述重装定时器超时时刻之前已被接收的RLC PDU，所述已被接收的RLC PDU中包括所述目标RLC PDU。
  9. 根据权利要求4至8中任一项所述的方法，其特征在于，在根据所述目标RLC PDU中包括的序列号SN的值对应的重装定时器的当前运行状态对所述目标RLC PDU进行处理之前，所述方法还包括：
    将所述目标RLC PDU存入缓存中。
  10. 根据权利要求9所述的方法，其特征在于，在将所述目标RLC PDU存入缓存中之前，所述方法还包括：
    确定所述目标RLC PDU是第一次被接收到。
  11. 根据权利要求1或3所述的方法，其特征在于，所述重装定时器的当前运行状态为超时状态；
    其中，所述根据所述目标RLC PDU中包括的序列号SN的值对应的重装定时器的当前运行状态对所述目标RLC PDU进行处理，包括：
    丢弃所述目标RLC PDU。
  12. 根据权利要求1或3所述的方法，其特征在于，在丢弃所述目标RLC PDU之前，所述方法还包括：
    确定所述目标RLC PDU不是第一次被接收到。
  13. 一种设备，其特征在于，包括：
    收发模块，用于接收目标无线链路控制RLC协议数据单元PDU；
    处理模块，用于若确定所述目标RLC PDU的数据域仅包括一个完整的RLC服务数据单元SDU的一个切割段，根据所述目标RLC PDU中包括的序列号SN的值对应的重装定时器的当前运行状态对所述目标RLC PDU进行处理，或丢弃所述RLC PDU，其中，所述目标RLC PDU为多个RLC PDU中的一个，所述多个RLC PDU中包括的SN的值相同，所述多个RLC PDU能够被重装成所述完整的RLC SDU，所述当前运行状态为下列运行状态中的一种：未被启动状态、计时状态和超时状态。
  14. 根据权利要求13所述的设备，其特征在于，所述处理模块还用于：
    若确定所述目标RLC PDU的数据域仅包括所述完整的RLC SDU，重装所述目标RLC PDU，所述目标RLC PDU中不包括SN。
  15. 根据权利要求13所述的设备，其特征在于，所述处理模块还用于：
    根据所述目标RLC PDU中包括的SN的值，确定所述重装定时器。
  16. 根据权利要求13或15所述的设备，其特征在于，所述重装定时器的当前运行状态为未被开启状态；
    其中，所述处理模块具体用于：
    开启所述重装定时器；
    若确定所述重装定时器超时，丢弃所述多个RLC PDU中在所述重装定时器超时时刻之前已被接收的RLC PDU，所述已被接收的RLC PDU中包括所述目标RLC PDU。
  17. 根据权利要求16所述的设备，其特征在于，所述处理模块还用于：
    在开启所述重装定时器之前，确定所述目标RLC PDU为所述多个RLC PDU中第一个被接收到的RLC PDU。
  18. 根据权利要求16所述的设备，其特征在于，所述处理器还用于：
    在开启所述重装定时器之前，确定所述目标RLC PDU的数据域中包括的切割段与所述多个RLC PDU中接收时刻在所述目标RLC PDU的接收时刻之前的任一RLC PDU的数据域中包括的切割段不相邻。
  19. 根据权利要求13或15所述的设备，其特征在于，所述重装定时器的当前运行状态为计时状态；
    其中，所述处理模块具体用于：
    若确定所述收发模块接收到所述目标RLC PDU之前已经接收到所述多个RLC PDU中除所述目标RLC PDU之外的其他RLC PDU，重装所述多个RLC PDU，并停止所述重装定时器。
  20. 根据权利要求19所述的设备，其特征在于，所述处理模块还用于：
    若确定所述收发模块接收到所述目标RLC PDU之前只接收到所述多个所有RLC PDU中除所述目标RLC PDU之外的部分RLC PDU，确定所述重装定时器是否超时；
    若确定所述重装定时器超时，丢弃所述多个RLC PDU中在所述重装定时器超时时刻之前已被接收的RLC PDU，所述已被接收的RLC PDU中包括所述目标RLC PDU。
  21. 根据权利要求16至20中任一项所述的设备，其特征在于，所述处理模块还用于：
    在根据所述目标RLC PDU中包括的序列号SN的值对应的重装定时器的当前运行状态对所述目标RLC PDU进行处理之前，将所述目标RLC PDU存入缓存中。
  22. 根据权利要求21所述的设备，其特征在于，所述处理模块还用于：在将所述目标RLC PDU存入缓存中之前，确定所述目标RLC PDU是第一次被接收到。
  23. 根据权利要求13或15所述的设备，其特征在于，所述重装定时器的当前运行状态为超时状态；
    其中，所述处理模块具体用于：丢弃所述目标RLC PDU。
  24. 根据权利要求13或15所述的设备，其特征在于，所述处理模块还用于：
    在丢弃所述目标RLC PDU之前，确定所述目标RLC PDU不是第一次被接收到。
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