WO2019213896A1 - 一种清除harq缓存的方法、设备及计算机存储介质 - Google Patents

一种清除harq缓存的方法、设备及计算机存储介质 Download PDF

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Publication number
WO2019213896A1
WO2019213896A1 PCT/CN2018/086331 CN2018086331W WO2019213896A1 WO 2019213896 A1 WO2019213896 A1 WO 2019213896A1 CN 2018086331 W CN2018086331 W CN 2018086331W WO 2019213896 A1 WO2019213896 A1 WO 2019213896A1
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Prior art keywords
grant
authorization
harq
harq process
dynamic
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PCT/CN2018/086331
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English (en)
French (fr)
Inventor
石聪
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Oppo广东移动通信有限公司
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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 BR112020022777-3A priority Critical patent/BR112020022777A2/pt
Priority to CN201880027326.XA priority patent/CN110710298B/zh
Priority to SG11202011176WA priority patent/SG11202011176WA/en
Priority to MX2020011989A priority patent/MX2020011989A/es
Priority to CA3099866A priority patent/CA3099866A1/en
Priority to PCT/CN2018/086331 priority patent/WO2019213896A1/zh
Priority to KR1020207035567A priority patent/KR20210008410A/ko
Priority to AU2018422334A priority patent/AU2018422334A1/en
Priority to EP18917664.7A priority patent/EP3618543A4/en
Publication of WO2019213896A1 publication Critical patent/WO2019213896A1/zh
Priority to US16/711,806 priority patent/US20200119860A1/en

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    • 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
    • H04L1/1822—Automatic repetition systems, e.g. Van Duuren systems involving configuration of automatic repeat request [ARQ] with parallel processes
    • 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
    • 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
    • H04L1/1812—Hybrid protocols; Hybrid automatic repeat request [HARQ]
    • 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
    • H04L1/1867—Arrangements specially adapted for the transmitter end
    • H04L1/1874—Buffer management
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/10—Connection setup
    • H04W76/11—Allocation or use of connection identifiers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/20—Manipulation of established connections
    • H04W76/27—Transitions between radio resource control [RRC] states
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W80/00—Wireless network protocols or protocol adaptations to wireless operation
    • H04W80/02—Data link layer protocols

Definitions

  • the embodiments of the present invention relate to the field of wireless communications technologies, and in particular, to a method, a device, and a computer storage medium for clearing a Hybrid Automatic Repeat reQuest (HARQ) cache.
  • HARQ Hybrid Automatic Repeat reQuest
  • 5G new wireless
  • NR New Radio
  • two configuration authorizations are introduced, and the terminal may skip the authorization grant when the authorized grant is obtained.
  • MAC Media Access Control
  • the HARQ cache is not cleared when the authorization is skipped, and thus an error occurs during data transmission.
  • the embodiment of the present invention is to provide a method, a device, and a computer storage medium for clearing a HARQ cache; and the phenomenon that transmission of erroneous data occurs in the HARQ process process can be avoided.
  • an embodiment of the present invention provides a method for clearing a HARQ cache, where the method is applied to a user equipment UE, and the method includes:
  • the data buffered by the HARQ process corresponding to the uplink grant is cleared in response to the set detection result.
  • an embodiment of the present invention provides a UE, including: a receiving part, a detecting part, and a clearing part; wherein
  • the receiving part is configured to receive an uplink authorization allocated by the network side device
  • the detecting part is configured to perform detection according to the preset detection policy according to the uplink authorization
  • the clearing part is configured to: in response to the set detection result, clear data buffered by the HARQ process corresponding to the uplink grant.
  • an embodiment of the present invention provides a UE, including: a network interface, a memory, and a processor;
  • the network interface is configured to receive and send signals during the process of transmitting and receiving information with other external network elements
  • the memory for storing a computer program capable of running on the first processor
  • the processor is configured to perform the steps of the method of the first aspect when the computer program is run.
  • an embodiment of the present invention provides a computer storage medium, where the computer storage medium stores a program for clearing a HARQ cache, where the program for clearing the HARQ cache is implemented by at least one processor to implement the first aspect. The steps of the method.
  • the embodiment of the present invention provides a method, a device, and a computer storage medium for clearing a HARQ cache.
  • the UE can determine whether to clear the data cached by the HARQ process corresponding to the uplink authorization based on the detection of the preset detection policy based on the uplink authorization. Therefore, when the UE skips skip for the uplink grant, the UE performs HARQ transmission on the old data buffered by the HARQ process to avoid transmission of erroneous data.
  • FIG. 1 is a schematic diagram of a data transmission error according to an embodiment of the present invention.
  • FIG. 2 is a schematic flowchart of a method for clearing a HARQ cache according to an embodiment of the present invention
  • FIG. 3 is a schematic diagram of a specific example of clearing a HARQ cache according to an embodiment of the present disclosure
  • FIG. 4 is a schematic diagram of another specific example of clearing a HARQ cache according to an embodiment of the present disclosure
  • FIG. 5 is a schematic structural diagram of a UE according to an embodiment of the present disclosure.
  • FIG. 6 is a schematic structural diagram of a specific hardware of a UE according to an embodiment of the present invention.
  • the user equipment (UE, User Equipment) performs the uplink HARQ, and the UE side has a HARQ entity entity, which can maintain a certain number of HARQ processes.
  • Each HARQ process has its own identity, and each HARQ process has Can correspond to a HARQ cache buffer.
  • the UE needs a legal uplink grant grant to transmit data in the HARQ buffer through the uplink shared channel (UL-SCH, UpLink Shared CHannel).
  • UL-SCH UpLink Shared CHannel
  • an authorized configured grant or a dynamic grant dynamic grant configured through static or semi-static configuration may be included.
  • the authorization grant will be skipped. Specifically, the UE skips the authorization, and the MAC entity of the UE does not generate a MAC Data Unit (PDU) for the HARQ entity that is authorized to be the UE.
  • PDU MAC Data Unit
  • the UE after obtaining the authorization, the UE will skip the authorization if the following conditions are met:
  • the MAC entity is configured to skip the uplink dynamic sending skipUplinkTxDynamic, and the authorization for indicating the HARQ entity is addressed by a Cell Radio Network Temporary Identifier (C-RNTI), or the indication is used for indicating
  • C-RNTI Cell Radio Network Temporary Identifier
  • the authorization of the HARQ entity is the configured uplink authorization;
  • the designated physical uplink shared channel (PUSCH, Physical Uplink Shared Channel) is not required to transmit the aperiodic CSI;
  • the MAC PDU includes a zero MAC SDU
  • the MAC PDU includes only the Buffer Status Report (BSR) and does not have data for any Logical Channel Group (LCG), or the MAC PDU includes only the padding BSR.
  • BSR Buffer Status Report
  • LCG Logical Channel Group
  • skipping the authorization is not a trigger to clear the HARQ cache.
  • the UE will only clear the HARQ buffer under the following conditions:
  • the old data of the previous HARQ transmission is correctly saved in the HARQ cache.
  • the network side cannot know that a grant for indicating HARQ retransmission is rescheduled, and the terminal transmits the old data in the HARQ cache based on the grant for indicating HARQ retransmission. A situation that caused a data transmission error.
  • the UE receives the dynamically scheduled grant, as shown by the slanted box in FIG. 1 , and transmits the data in the HARQ buffer buffer corresponding to the HARQ process #n based on the grant, and transmits the data.
  • the UE does not clear the data in the HARQ buffer buffer corresponding to the HARQ process #n, as shown by the black box in FIG.
  • the UE will receive a configured configured grant grant, as shown in the cross-line box in Figure 1, assuming a preconfigured configured grant.
  • the UE may skip the configured grant because the above-mentioned skipped grant skip condition is satisfied. However, the data in the HARQ buffer is still retained.
  • the network side If the network side cannot know that the UE has skipped the configured grant, it will resend a dynamic grant dynamic grant indicating the HARQ retransmission. See the dot padding box in Figure 1. Then the UE retransmits the data in the HARQ buffer based on the dynamic grant dynamic grant for instructing HARQ retransmission, resulting in a data transmission error.
  • a method for clearing a HARQ cache according to an embodiment of the present invention is provided.
  • the method is applied to a UE, and the method includes:
  • S201 Receive an uplink authorization allocated by the network side device.
  • S202 Perform detection according to the preset detection policy according to the uplink authorization.
  • S203 Clear data buffered by the HARQ process corresponding to the uplink authorization, in response to the set detection result.
  • the UE determines whether to clear the data cached by the HARQ process corresponding to the uplink authorization based on the uplink authorization, and can prevent the UE from skipping the skip for the uplink authorization.
  • the old data buffered by the HARQ process is subjected to HARQ transmission to avoid the phenomenon of transmitting erroneous data.
  • the detecting according to the preset detection policy includes:
  • the detecting whether the MAC PDU for transmission is obtained includes:
  • the set condition may be a condition that is skipped by the foregoing, and the MAC PDU cannot be generated for the HARQ entity of the UE.
  • the uplink grant is an authorization for indicating retransmission, and when the HARQ buffer has buffered data, then the uplink grant can be used to transmit the cached data, that is, retransmission, and the set detection is not satisfied at this time. As a result, the data in the HARQ buffer cannot be cleared.
  • the detecting according to the preset detection policy includes:
  • the timer may be configured by using RRC signaling received by the terminal.
  • the RRC signaling bearer may be used to configure an indication of the timer, so that when receiving the indication, the UE performs the timer configuration according to the indication.
  • the uplink authorization may include: a dynamic authorization dynamic grant or a configuration authorization configured grant.
  • the dynamic authorization includes: a Physical Downlink Control (PDCCH, Physical Downlink Control) scrambled by a C-RNTI and a configured Configured Scheduling Radio Network Temporary Identifier (CS-RNTI) Channel) Authorization for scheduling.
  • PDCCH Physical Downlink Control
  • CS-RNTI Configured Scheduling Radio Network Temporary Identifier
  • the technical solution shown in FIG. 2 may further include skipping the Dynamic authorization
  • FIG. 2 The illustrated technical solution may also include skipping the dynamic authorization.
  • the configuration authorization configured grant may include a first type of configuration authorization type 1 configured grant and/or a second type of configuration authorization type 2 configured grant.
  • the type 1 configured grant and the type2configured grant are introduced in the NR protocol, and their corresponding definitions are:
  • the first type of configuration authorization is provided by the RRC for uplink grant and stored as a configured uplink grant;
  • the second type of configuration grant is an uplink grant provided by the PDCCH, and the storage or clearing of the configured uplink grant is based on the configured grant activated or deactivated L1 signaling.
  • configuration authorization described in this embodiment may preferably be the first type of configuration authorization and the second type of configuration authorization introduced in the NR protocol.
  • the technical solution shown in FIG. 2 provides a method for clearing a HARQ buffer, and the UE can determine whether to clear data cached by the HARQ process corresponding to the uplink authorization based on the detection of the preset detection policy based on the uplink authorization, thereby avoiding When the UE skips skip for the uplink grant, the old data buffered by the HARQ process is HARQ transmitted to avoid the transmission of erroneous data.
  • the UE when the UE skips the configured configured grant as shown in the cross-line box, the UE clears the data in the HARQ buffer buffer corresponding to the HARQ process #n, and then receives the data in the HARQ buffer buffer corresponding to the HARQ process #n.
  • the HARQ buffer corresponding to the HARQ process #n is empty. Even if the UE is set to skip the dynamic grant dynamic grant for indicating HARQ retransmission as shown in the padding padding frame, the UE can still utilize the HARQ process #n corresponding to the grant indicated by the vertical bar.
  • the HARQ buffer performs HARQ data transmission based on the grant shown in the vertical bar.
  • the UE After receiving the dynamically scheduled grant indicated by the slash box, the UE starts the timer configured grant timer set for the HARQ process #n, and based on the grant, the data in the HARQ cache buffer corresponding to the HARQ process #n. After the data transmission is completed, the UE does not clear the data in the HARQ buffer buffer corresponding to the HARQ process #n, but as shown by the black fill arrow in the figure, when the timer expires, the corresponding HARQ process #n is cleared.
  • the HARQ corresponding to the HARQ process #n is HARQ. If the buffer is empty, the HARQ buffer corresponding to the HARQ process #n is still empty when receiving the dynamic grant dynamic grant indicated by the dot padding box for indicating HARQ retransmission. Even if the UE is set to skip the dynamic grant dynamic grant for indicating HARQ retransmission as shown in the padding padding frame, the UE can still utilize the HARQ process #n corresponding to the grant indicated by the vertical bar.
  • the HARQ buffer performs HARQ data transmission based on the grant shown in the vertical bar.
  • FIG. 5 shows a composition of a UE 50 according to an embodiment of the present invention, which may include: a receiving part 501, a detecting part 502, and a clearing part 503; wherein the receiving The part 501 is configured to receive an uplink authorization allocated by the network side device.
  • the detecting part 502 is configured to perform detection according to the preset detection policy according to the uplink authorization;
  • the clearing part 503 is configured to: in response to the set detection result, clear data buffered by the HARQ process corresponding to the uplink grant.
  • the detecting portion 502 is configured to:
  • the detecting portion 502 is configured to:
  • the detecting portion 502 is configured to:
  • the timer is configured by the received RRC signaling.
  • the uplink authorization includes: dynamic authorization or configuration authorization.
  • the dynamic authorization includes: scheduling authorization by the C-RNTI and the CS-RNTI scrambled PDCCH.
  • the detecting part 502 is further configured to skip the dynamic authorization when the dynamic authorization is used to indicate that the HARQ process is retransmitted, and the HARQ process is empty.
  • the detecting part 502 is further configured to: when the dynamic authorization is used to indicate that the HARQ process is newly transmitted, and the HARQ process is empty, and the MAC PDU for transmission is not obtained, Then the dynamic authorization is skipped.
  • the configuration authorization includes a first type of configuration authorization and/or a second type of configuration authorization.
  • the “part” may be a partial circuit, a partial processor, a partial program or software, etc., of course, may be a unit, a module, or a non-modular.
  • each component in this embodiment 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 above integrated unit can be implemented in the form of hardware or in the form of a software function module.
  • the integrated unit may be stored in a computer readable storage medium if it is implemented in the form of a software function module and is not sold or used as a stand-alone product.
  • the technical solution of the embodiment is essentially Said that the part contributing to the prior art or all or part of the technical solution can be embodied in the form of a software product stored in a storage medium, comprising a plurality of instructions for making a computer device (may It is a personal computer, a server, or a network device, etc. or a processor that performs all or part of the steps of the method described in this embodiment.
  • 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, which can store program codes.
  • the embodiment provides a computer storage medium storing a program for clearing the HARQ cache, and the program for clearing the HARQ cache is executed when executed by at least one processor to implement the technical solution shown in FIG. 2 above. The steps of the method described.
  • FIG. 6 a specific hardware structure of a user equipment 50 according to an embodiment of the present invention is shown, which may include: a network interface 601, a memory 602, and a processor 603; They are coupled together by a bus system 604. It will be appreciated that bus system 604 is used to implement connection communication between these components.
  • the bus system 604 includes a power bus, a control bus, and a status signal bus in addition to the data bus. However, for clarity of description, various buses are labeled as bus system 604 in FIG.
  • the network interface 601 is configured to receive and send signals during the process of transmitting and receiving information with other external network elements.
  • a memory 602 configured to store a computer program capable of running on the processor 603;
  • the processor 603 is configured to: when the computer program is run, execute:
  • the memory 602 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 Synchronous Dynamic Random Access Memory
  • DDRSDRAM Double Data Rate Synchronous Dynamic Random Access Memory
  • ESDRAM Enhanced Synchronous Dynamic Random Access Memory
  • SDRAM Synchronous Connection Dynamic Random Access Memory
  • DRRAM direct memory bus random access memory
  • the processor 603 may be an integrated circuit chip with signal processing capabilities. In the implementation process, each step of the above method may be completed by an integrated logic circuit of hardware in the processor 603 or an instruction in the form of software.
  • the processor 603 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. Programmable 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.
  • the software module can be located in a conventional storage medium such as random access memory, flash memory, read only memory, programmable read only memory or electrically erasable programmable memory, registers, and the like.
  • the storage medium is located in the memory 602, and the processor 603 reads the information in the memory 602 and completes the steps of the above method in combination with its hardware.
  • the embodiments described herein can be implemented in hardware, software, firmware, middleware, microcode, or a combination thereof.
  • the processing unit can be implemented in one or more Application Specific Integrated Circuits (ASICs), Digital Signal Processing (DSP), Digital Signal Processing Equipment (DSP Device, DSPD), programmable Programmable Logic Device (PLD), Field-Programmable Gate Array (FPGA), general purpose processor, controller, microcontroller, microprocessor, other for performing the functions described herein In an electronic unit or a combination thereof.
  • ASICs Application Specific Integrated Circuits
  • DSP Digital Signal Processing
  • DSP Device Digital Signal Processing Equipment
  • PLD programmable Programmable Logic Device
  • FPGA Field-Programmable Gate Array
  • the techniques described herein can be implemented by modules (eg, procedures, functions, and so on) that perform the functions described herein.
  • the software code can be stored in memory and executed by the processor.
  • the memory can be implemented in the processor or external to the processor.
  • the UE performs the detection according to the preset detection policy to determine whether to clear the data cached by the HARQ process corresponding to the uplink authorization, so that the UE can avoid the case that the UE skips the skip for the uplink authorization.
  • the old data buffered by the HARQ process is HARQ transmitted to avoid the transmission of erroneous data.

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Abstract

一种清除HARQ缓存的方法、设备及计算机存储介质。该方法包括：接收网络侧设备分配的上行授权（S201）；基于所述上行授权，按照预设的检测策略进行检测（S202）；响应于设定的检测结果，清除所述上行授权对应的HARQ进程所缓存的数据（S203）。

Description

一种清除HARQ缓存的方法、设备及计算机存储介质 技术领域
本发明实施例涉及无线通信技术领域，尤其涉及一种清除混合自动重传请求(HARQ，Hybrid Automatic Repeat reQuest)缓存的方法、设备及计算机存储介质。
背景技术
在第五代(5G，5th Generation)新无线(NR，New Radio)系统中，引入了两种配置授权configured grant，而且终端在获得授权grant的时候，有可能会略过skip该授权grant。但是，目前相关的介质访问控制(MAC，Media Access Control)协议中，在略过该授权的情况下不会清除HARQ缓存，因此会导致数据传输过程中出现错误。
发明内容
本发明实施例期望提供一种清除HARQ缓存的方法、设备及计算机存储介质；能够避免在HARQ进程process中出现传输错误数据的现象。
本发明实施例的技术方案可以如下实现：
第一方面，本发明实施例提供了一种清除HARQ缓存的方法，所述方法应用于用户设备UE，所述方法包括：
接收网络侧设备分配的上行授权；
基于所述上行授权，按照预设的检测策略进行检测；
响应于设定的检测结果，清除所述上行授权对应的HARQ进程所缓存的数据。
第二方面，本发明实施例提供了一种UE，包括：接收部分、检测部分 和清除部分；其中，
所述接收部分，配置为接收网络侧设备分配的上行授权；
所述检测部分，配置为基于所述上行授权，按照预设的检测策略进行检测；
所述清除部分，配置为响应于设定的检测结果，清除所述上行授权对应的HARQ进程所缓存的数据。
第三方面，本发明实施例提供了一种UE，包括：网络接口，存储器和处理器；其中，
所述网络接口，用于在与其他外部网元之间进行收发信息过程中，信号的接收和发送；
所述存储器，用于存储能够在所述第一处理器上运行的计算机程序；
所述处理器，用于在运行所述计算机程序时，执行第一方面所述方法的步骤。
第四方面，本发明实施例提供了一种计算机存储介质，所述计算机存储介质存储有清除HARQ缓存的程序，所述清除HARQ缓存的程序被至少一个处理器执行时实现第一方面所述的方法的步骤。
本发明实施例提供了一种清除HARQ缓存的方法、设备及计算机存储介质；UE能够基于基于上行授权按照预设的检测策略进行检测来确定是否清除该上行授权对应的HARQ进程所缓存的数据，从而能够避免当UE在针对上行授权略过skip等情况下，将HARQ进程所缓存的旧数据进行HARQ传输，避免出现传输错误数据的现象。
附图说明
图1为本发明实施例提供的一种数据传输错误的情况示意图；
图2为本发明实施例提供的一种清除HARQ缓存的方法流程示意图；
图3为本发明实施例提供的一种清除HARQ缓存的具体示例示意图；
图4为本发明实施例提供的另一种清除HARQ缓存的具体示例示意图；
图5为本发明实施例提供的一种UE的组成示意图；
图6为本发明实施例提供的一种UE的具体硬件结构示意图。
具体实施方式
为了能够更加详尽地了解本发明实施例的特点与技术内容，下面结合附图对本发明实施例的实现进行详细阐述，所附附图仅供参考说明之用，并非用来限定本发明实施例。
目前，以用户设备(UE，User Equipment)进行上行HARQ来说，UE侧会有一个HARQ实体entity，能够维护一定数量的HARQ进程，每个HARQ进程都有自身的标识，并且每个HARQ进程都可以对应一个HARQ缓存buffer。在进行上行HARQ传输的过程中，UE需要一个合法的上行授权grant才能够通过上行共享信道(UL-SCH，UpLink Shared CHannel)传输HARQ缓存中的数据。对于授权grant，可以包括通过静态或半静态配置的授权configured grant或者动态授权dynamic grant。而且无论是configured grant，或者dynamic grant，UE在获得grant并且满足特定的条件之后，都会有极大的可能略过skip该授权grant。具体来说，UE略过该授权可以是UE的MAC实体不针对该授权为UE的HARQ实体生成MAC协议数据单元(PDU，Protocol Data Unit)。
需要说明的是，在相关通信标准或协议中，UE在获得授权后，会在如下条件均满足的情况下略过该授权：
1、MAC实体被配置为略过上行动态发送skipUplinkTxDynamic，并且该用于指示HARQ实体的授权通过小区无线网络临时标识(C-RNTI，Cell Radio Network Temporary Identifier)进行寻址，或者，该用于指示HARQ实体的授权是配置的上行授权；
2、在TS 38.212(9)中，没有要求指定的物理上行共享信道(PUSCH， Physical Uplink Shared Channel)传输非周期CSI；
3、MAC PDU包括零MAC SDU；
4、MAC PDU仅包括周期性缓冲状态报告(BSR，Buffer Status Report)且没有用于任何逻辑信道组(LCG，Logical Channel Group)的数据，或者MAC PDU仅包括填充BSR。
但是，略过授权并非是清除HARQ缓存的触发条件。在目前相关的通信标准或协议中，UE只会在以下条件下清除HARQ buffer：
1、如果与激活的辅小区(SCell，Secondary Cell)相关联的辅小区去激活定时器sCellDeactivationTimer到期，则清除与该辅小区相关的HARQ缓存；
2、如果竞争解决方案不成功，则清除在第三类消息MSG3缓存器中用于传输MAC PDU的HARQ缓存；
3、当时间校准计时器timeAlignmentTimer到期，并且如果时间校准计时器timeAlignmentTimer与主定时提前组(PTAG，primary timing advance group)相关，清除所有服务小区的HARQ缓存。
因此，HARQ缓存中会保存前次正确完成HARQ传输的旧数据。当UE略过授权grant后，网络侧无法获知，会重新调度一个用于指示HARQ重传的grant，那么终端会基于该用于指示HARQ重传的grant将HARQ缓存中的旧数据进行传输，从而导致数据发送错误的情况发生。
举例来说，如图1所示，UE接收到动态调度的grant，如图1中斜线框所示，并基于该grant将HARQ进程#n对应的HARQ缓存buffer中的数据进行传输，数据传输完毕后，UE不会清除HARQ进程#n对应的HARQ缓存buffer中的数据，如图1中的黑色框所示。接下来UE会接受到一个配置的授权configured grant，如图1中交叉线框所示，假定是预先配置好的configured grant。由于满足上述略过授权skip grant条件，UE可以略过该 configured grant。但是HARQ buffer中的数据仍然保留。网络侧由于无法获知UE已经略过该configured grant，就会重新发送一个用于指示进行HARQ重传的动态授权dynamic grant，参见图1中的点填充框所示。那么UE基于用于指示进行HARQ重传的动态授权dynamic grant将HARQ buffer中的数据进行重传，从而导致数据传输错误发生。
为了避免上述情况发生，参见图2，其示出了本发明实施例提供的一种清除HARQ缓存的方法，所述方法应用于UE，所述方法包括：
S201：接收网络侧设备分配的上行授权；
S202：基于所述上行授权，按照预设的检测策略进行检测；
S203：响应于设定的检测结果，清除所述上行授权对应的HARQ进程所缓存的数据。
通过图2所示的技术方案，UE基于上行授权按照预设的检测策略进行检测来确定是否清除该上行授权对应的HARQ进程所缓存的数据，从而能够避免当UE在针对上行授权略过skip等情况下，将HARQ进程所缓存的旧数据进行HARQ传输，避免出现传输错误数据的现象。
对于图2所示的技术方案，在一种可能的实现方式中，所述按照预设的检测策略进行检测，包括：
检测是否获得用于传输的介质访问控制协议数据单元MAC PDU；
检测所述上行授权是否指示新数据传输；
当检测到无法获得用户传输的MAC PDU，且监测到所述上行授权是指示新数据传输时，确定满足所述设定的检测结果。
具体来说，所述检测是否获得用于传输的MAC PDU，包括：
在满足设定的条件下，是否产生用于传输的MAC PDU。
对于上述实现方式来说，在具体实现过程中，所述设定的条件可以是前述略过该授权所需的条件，由于略过该授权会造成不能为UE的HARQ 实体生成MAC PDU。此外，如果该上行授权是一个用于指示重传的授权，并且当HARQ buffer有缓存数据时，那么这个上行授权可以用来传输该缓存数据，即重传，此时就不满足设定的检测结果，从而不能清除HARQ buffer中的数据。
因此，在本实施例中，当检测到无法产生用户传输的MAC PDU，且监测到所述上行授权是指示新数据传输时，则清除上行授权对应的HARQ进程所缓存的数据，从而能够避免数据传输错误的情况发生。
对于图2所示的技术方案，在另一种可能的实现方式中，所述按照预设的检测策略进行检测，包括：
检测针对所述上行授权对应的HARQ进程所设置的计时器configured grant timer是否超时；
当检测到所述计时器超时时，确定满足所述设定的检测结果。
具体来说，所述计时器可以通过终端接收的RRC信令进行配置。在具体实现过程中，可以将通过RRC信令承载用于配置该计时器的指示，从而UE在接收到该指示的时候，按照指示进行计时器的配置。
在图2所示的技术方案中，所述上行授权可以包括：动态授权dynamic grant或配置授权configured grant。
在上述两种授权中，所述动态授权包括：通过C-RNTI以及配置的调度无线网络临时标识(CS-RNTI，Configured Scheduling Radio Network Temporary Identifier)加扰的物理下行控制信道(PDCCH，Physical Downlink Control Channel)进行调度的授权。
并且，对于动态授权来说，优选地，当所述动态授权用于指示对所述HARQ进程进行重传，且所述HARQ进程为空，则图2所示的技术方案还可以包括略过所述动态授权；
此外，对于动态授权来说，优选地，当所述动态授权用于指示对所 述HARQ进程进行新传，且所述HARQ进程为空，且没有获得用于传输的MAC PDU，则图2所示的技术方案还可以包括略过所述动态授权。
在上述两种授权中，所述配置授权configured grant则可以包括第一类型的配置授权type 1configured grant和/或第二类型的配置授权type2configured grant。
具体来说，NR协议中引入了type 1configured grant以及type2configured grant，其对应的定义分别是：
第一类型的配置授权是由RRC提供上行链路授权，并存储为配置的上行链路授权；
第二类型的配置授权是由PDCCH提供的上行链路授权，并且基于配置的授权激活或失活的L1信令进行配置的上行链路授权的存储或清除。
可以理解地，本实施例中所述的配置授权则可以优选为NR协议中所引入的第一类型的配置授权和第二类型的配置授权。
图2所示的技术方案提供了一种清除HARQ缓存的方法，UE能够基于基于上行授权按照预设的检测策略进行检测来确定是否清除该上行授权对应的HARQ进程所缓存的数据，从而能够避免当UE在针对上行授权略过skip等情况下，将HARQ进程所缓存的旧数据进行HARQ传输，避免出现传输错误数据的现象。
基于图2所示的技术方案，本发明实施例通过以下具体示例对上述技术方案进行详细说明。
具体示例一
以图1所示的情况为例，参见图3，当UE略过如交叉线框所示的配置的授权configured grant时，清除HARQ进程#n对应的HARQ缓存buffer中的数据，那么在接收到点填充框所示的用于指示进行HARQ重传的动态授权dynamic grant时，HARQ进程#n对应的HARQ buffer为空。即使设定 UE再次略过skip点填充框所示的用于指示进行HARQ重传的动态授权dynamic grant，当UE接收到竖线框所示的grant时，UE仍然可以利用HARQ进程#n对应的HARQ buffer基于竖线框所示的grant进行HARQ数据传输。
具体示例二
参见图4所示，UE接收到斜线框所示动态调度的grant后启动为HARQ进程#n设置的计时器configured grant timer，并基于该grant将HARQ进程#n对应的HARQ缓存buffer中的数据进行传输，数据传输完毕后，UE不会清除HARQ进程#n对应的HARQ缓存buffer中的数据，而是如图中黑色填充箭头所示，当计时器到期时，清空HARQ进程#n对应的HARQ缓存buffer中的数据。需要说明的是，在计时器的启动过程中，配置授权configured grant不能发送deliver到HARQ entity。由图4可以看出，当HARQ进程#n对应的HARQ缓存buffer中的数据清除完毕后，当UE后续略过如交叉线框所示的配置的授权configured grant时，HARQ进程#n对应的HARQ buffer为空，那么在接收到点填充框所示的用于指示进行HARQ重传的动态授权dynamic grant时，HARQ进程#n对应的HARQ buffer仍然为空。即使设定UE再次略过skip点填充框所示的用于指示进行HARQ重传的动态授权dynamic grant，当UE接收到竖线框所示的grant时，UE仍然可以利用HARQ进程#n对应的HARQ buffer基于竖线框所示的grant进行HARQ数据传输。
通过上述两个具体示例，可以看出，通过图2所示的技术方案，在清除HARQ缓存之后，能够能够避免当UE在针对上行授权略过skip等情况下，将HARQ进程所缓存的旧数据进行HARQ传输，避免出现传输错误数据的现象。
基于前述技术方案相同的发明构思，参见图5，其示出了本发明实施例提供的一种UE 50的组成，可以包括：接收部分501、检测部分502和清除 部分503；其中，所述接收部分501，配置为接收网络侧设备分配的上行授权；
所述检测部分502，配置为基于所述上行授权，按照预设的检测策略进行检测；
所述清除部分503，配置为响应于设定的检测结果，清除所述上行授权对应的HARQ进程所缓存的数据。
在上述方案中，所述检测部分502，配置为：
检测是否获得用于传输的介质访问控制协议数据单元MAC PDU；
检测所述上行授权是否指示新数据传输；
当检测到无法获得用户传输的MAC PDU，且监测到所述上行授权是指示新数据传输时，确定满足所述设定的检测结果。
在上述方案中，所述检测部分502，配置为：
在满足设定的条件下，是否产生用于传输的MAC PDU。
在上述方案中，所述检测部分502，配置为：
检测针对所述上行授权对应的HARQ进程所设置的计时器是否超时；
当检测到所述计时器超时时，确定满足所述设定的检测结果。
在上述方案中，所述计时器通过接收的RRC信令进行配置。
在上述方案中，所述上行授权包括：动态授权或配置授权。
在上述方案中，所述动态授权包括：通过C-RNTI以及CS-RNTI加扰的PDCCH进行调度的授权。
在上述方案中，所述检测部分502，还配置为：当所述动态授权用于指示对所述HARQ进程进行重传，且所述HARQ进程为空，则略过所述动态授权。
在上述方案中，所述检测部分502，还配置为：当所述动态授权用于指示对所述HARQ进程进行新传，且所述HARQ进程为空，且没有获得 用于传输的MAC PDU，则略过所述动态授权。
在上述方案中，所述配置授权包括第一类型的配置授权和/或第二类型的配置授权。
可以理解地，在本实施例中，“部分”可以是部分电路、部分处理器、部分程序或软件等等，当然也可以是单元，还可以是模块也可以是非模块化的。
另外，在本实施例中的各组成部分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模块的形式实现。
所述集成的单元如果以软件功能模块的形式实现并非作为独立的产品进行销售或使用时，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，本实施例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processor(处理器)执行本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(ROM，Read Only Memory)、随机存取存储器(RAM，Random Access Memory)、磁碟或者光盘等各种可以存储程序代码的介质。
因此，本实施例提供了一种计算机存储介质，该计算机存储介质存储有清除HARQ缓存的程序，所述清除HARQ缓存的程序被至少一个处理器执行时执行时实现上述图2所示技术方案所述的方法的步骤。
基于上述用户设备50以及计算机存储介质，参见图6，其示出了本发明实施例提供的一种用户设备50的具体硬件结构，可以包括：网络接口601、存储器602和处理器603；各个组件通过总线系统604耦合在一起。可理解， 总线系统604用于实现这些组件之间的连接通信。总线系统604除包括数据总线之外，还包括电源总线、控制总线和状态信号总线。但是为了清楚说明起见，在图6中将各种总线都标为总线系统604。其中，网络接口601，用于在与其他外部网元之间进行收发信息过程中，信号的接收和发送；
存储器602，用于存储能够在处理器603上运行的计算机程序；
处理器603，用于在运行所述计算机程序时，执行：
基于针对待传输数据的混合自动重传请求HARQ重传的配置信息，决定所述待传输数据的HARQ重传模式；根据所述HARQ重传模式，将待传输数据传输至用户设备接收端。
可以理解，本发明实施例中的存储器602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，DDRSDRAM)、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，DRRAM)。本文描述的系统和方法的存储器602旨在包括但不限于这些和任意其它适合类型的存储器。
而处理器603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，上述方法的各步骤可以通过处理器603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603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602，处理器603读取存储器602中的信息，结合其硬件完成上述方法的步骤。
可以理解的是，本文描述的这些实施例可以用硬件、软件、固件、中间件、微码或其组合来实现。对于硬件实现，处理单元可以实现在一个或多个专用集成电路(Application Specific Integrated Circuits，ASIC)、数字信号处理器(Digital Signal Processing，DSP)、数字信号处理设备(DSP Device，DSPD)、可编程逻辑设备(Programmable Logic Device，PLD)、现场可编程门阵列(Field-Programmable Gate Array，FPGA)、通用处理器、控制器、微控制器、微处理器、用于执行本申请所述功能的其它电子单元或其组合中。
对于软件实现，可通过执行本文所述功能的模块(例如过程、函数等)来实现本文所述的技术。软件代码可存储在存储器中并通过处理器执行。存储器可以在处理器中或在处理器外部实现。
具体来说，用户设备50中的处理器603还配置为运行所述计算机程序时，执行前述实施例一中所述的方法步骤，这里不再进行赘述。
以上所述，仅为本发明的较佳实施例而已，并非用于限定本发明的保护范围。
工业实用性
本发明实施例中，UE基于上行授权按照预设的检测策略进行检测来确定是否清除该上行授权对应的HARQ进程所缓存的数据，从而能够避免当UE在针对上行授权略过skip等情况下，将HARQ进程所缓存的旧数据进行HARQ传输，避免出现传输错误数据的现象。

Claims (22)

  1. 一种清除混合自动重传请求HARQ缓存的方法，所述方法应用于用户设备UE，所述方法包括：
    接收网络侧设备分配的上行授权；
    基于所述上行授权，按照预设的检测策略进行检测；
    响应于设定的检测结果，清除所述上行授权对应的HARQ进程所缓存的数据。
  2. 根据权利要求1所述的方法，其中，所述按照预设的检测策略进行检测，包括：
    检测是否获得用于传输的介质访问控制协议数据单元MAC PDU；
    检测所述上行授权是否指示新数据传输；
    当检测到无法获得用户传输的MAC PDU，且监测到所述上行授权是指示新数据传输时，确定满足所述设定的检测结果。
  3. 根据权利要求2所述的方法，其中，所述检测是否获得用于传输的MAC PDU，包括：
    在满足设定的条件下，是否产生用于传输的MAC PDU。
  4. 根据权利要求1所述的方法，其中，所述按照预设的检测策略进行检测，包括：
    检测针对所述上行授权对应的HARQ进程所设置的计时器是否超时；
    当检测到所述计时器超时时，确定满足所述设定的检测结果。
  5. 根据权利要求4所述的方法，其中，所述计时器通过接收的RRC信令进行配置。
  6. 根据权利要求1至5任一项所述的方法，其中，所述上行授权包括：动态授权或配置授权。
  7. 根据权利要求6所述的方法，其中，所述动态授权包括：通过小区无线网络临时标识C-RNTI以及CS-RNTI加扰的物理下行控制信道PDCCH进行调度的授权。
  8. 根据权利要求7所述的方法，其中，所述方法还包括：
    当所述动态授权用于指示对所述HARQ进程进行重传，且所述HARQ进程为空，则略过所述动态授权。
  9. 根据权利要求7所述的方法，其中，所述方法还包括：
    当所述动态授权用于指示对所述HARQ进程进行新传，且所述HARQ进程为空，且没有获得用于传输的MAC PDU，则略过所述动态授权。
  10. 根据权利要求6所述的方法，其中，所述配置授权包括第一类型的配置授权和/或第二类型的配置授权。
  11. 一种UE，包括：接收部分、检测部分和清除部分；其中，
    所述接收部分，配置为接收网络侧设备分配的上行授权；
    所述检测部分，配置为基于所述上行授权，按照预设的检测策略进行检测；
    所述清除部分，配置为响应于设定的检测结果，清除所述上行授权对应的HARQ进程所缓存的数据。
  12. 根据权利要求11所述的UE，其中，所述检测部分，配置为：
    检测是否获得用于传输的介质访问控制协议数据单元MAC PDU；
    检测所述上行授权是否指示新数据传输；
    当检测到无法获得用户传输的MAC PDU，且监测到所述上行授权是指示新数据传输时，确定满足所述设定的检测结果。
  13. 根据权利要求12所述的UE，其中，所述检测部分，配置为：
    在满足设定的条件下，是否产生用于传输的MAC PDU。
  14. 根据权利要求11所述的UE，其中，所述检测部分，配置为：
    检测针对所述上行授权对应的HARQ进程所设置的计时器是否超时；
    当检测到所述计时器超时时，确定满足所述设定的检测结果。
  15. 根据权利要求14所述的UE，其中，所述计时器通过接收的RRC信令进行配置。
  16. 根据权利要求11至15任一项所述的UE，其中，所述上行授权包括：动态授权或配置授权。
  17. 根据权利要求16所述的UE，其中，所述动态授权包括：通过小区无线网络临时标识C-RNTI以及配置的调度无线网络临时标识CS-RNTI加扰的物理下行控制信道PDCCH进行调度的授权。
  18. 根据权利要求17所述的UE，其中，所述检测部分，还配置为：
    当所述动态授权用于指示对所述HARQ进程进行重传，且所述HARQ进程为空，则略过所述动态授权。
  19. 根据权利要求17所述的UE，其中，所述检测部分，还配置为：
    当所述动态授权用于指示对所述HARQ进程进行新传，且所述HARQ进程为空，且没有获得用于传输的MAC PDU，则略过所述动态授权。
  20. 根据权利要求16所述的UE，其中，所述配置授权包括第一类型的配置授权和/或第二类型的配置授权。
  21. 一种UE，包括：网络接口，存储器和处理器；其中，
    所述网络接口，用于在与其他外部网元之间进行收发信息过程中，信号的接收和发送；
    所述存储器，用于存储能够在所述第一处理器上运行的计算机程序；
    所述处理器，用于在运行所述计算机程序时，执行权利要求1至10 中任一项所述方法的步骤。
  22. 一种计算机存储介质，所述计算机存储介质存储有清除HARQ缓存的程序，所述清除HARQ缓存的程序被至少一个处理器执行时实现权利要求1至10中任一项所述的方法的步骤。
PCT/CN2018/086331 2018-05-10 2018-05-10 一种清除harq缓存的方法、设备及计算机存储介质 WO2019213896A1 (zh)

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CN201880027326.XA CN110710298B (zh) 2018-05-10 2018-05-10 一种清除harq缓存的方法、设备及计算机存储介质
SG11202011176WA SG11202011176WA (en) 2018-05-10 2018-05-10 Method for harq buffer clearing, device and computer storage medium
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CA3099866A CA3099866A1 (en) 2018-05-10 2018-05-10 Method for clearing harq cache device and computer stroage medium
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KR1020207035567A KR20210008410A (ko) 2018-05-10 2018-05-10 Harq 버퍼를 제거하는 방법, 기기 및 컴퓨터 저장 매체
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