WO2020103714A1 - 一种缓存管理的方法及相应设备 - Google Patents

一种缓存管理的方法及相应设备

Info

Publication number
WO2020103714A1
WO2020103714A1 PCT/CN2019/117029 CN2019117029W WO2020103714A1 WO 2020103714 A1 WO2020103714 A1 WO 2020103714A1 CN 2019117029 W CN2019117029 W CN 2019117029W WO 2020103714 A1 WO2020103714 A1 WO 2020103714A1
Authority
WO
WIPO (PCT)
Prior art keywords
uplink data
communication device
indication information
harq
information
Prior art date
Application number
PCT/CN2019/117029
Other languages
English (en)
French (fr)
Inventor
何青春
娄崇
常俊仁
张向东
卢哲军
Original Assignee
华为技术有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Publication of WO2020103714A1 publication Critical patent/WO2020103714A1/zh

Links

Images

Classifications

    • 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
    • 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

Definitions

  • This application relates to the field of communication technology, and in particular to a method and corresponding device for cache management.
  • the terminal device In a new generation of wireless communication technology (new radio, NR), the terminal device needs to determine the hybrid automatic transmission request (HARQ) new transmission and HARQ retransmission according to the scheduling of the network device to send uplink data to the network device.
  • HARQ hybrid automatic transmission request
  • the terminal device When the network device schedules a new HARQ transmission, the terminal device will be notified of the HARQ process used during the new transmission.
  • Each HARQ process corresponds to a HARQ buffer.
  • the terminal device stores the newly transmitted uplink data in the corresponding HARQ buffer. In order to facilitate HARQ retransmission when a new HARQ transmission fails.
  • HARQ retransmission needs to be scheduled according to the network equipment, and the terminal device does not know the HARQ retransmission time. If the network device does not schedule HARQ retransmission, the HARQ buffer will always store the uplink data corresponding to the previous transmission, and the HARQ buffer will not be cleared for a long time. , Will always occupy the cache resources, and the uplink data in the HARQ buffer may be invalid, and there is no need for retransmission.
  • the embodiments of the present application provide a method for cache management, which can clear the data in the HARQ buffer in time, thereby improving the utilization rate of the cache.
  • the embodiments of the present application also provide corresponding equipment.
  • a first aspect of the present application provides a buffer management method, including: a communication device receiving scheduling information and instruction information sent by a network device; the communication device sending HARQ process to the network device through a hybrid automatic retransmission request based on the scheduling information Data; the communication device clears the uplink data in the HARQ buffer corresponding to the HARQ process according to the instruction information.
  • the communication device may be a terminal device or a circuit.
  • the scheduling information is used to instruct the communication device to request the HARQ process to send uplink data to the network device through the hybrid automatic retransmission, and the instruction information is used to instruct the communication device to clear the HARQ buffer corresponding to the HARQ process after sending the uplink data.
  • the upstream data is used to instruct the communication device to request the HARQ process to send uplink data to the network device through the hybrid automatic retransmission, and the instruction information is used to instruct the communication device to clear the HARQ buffer corresponding to the HARQ process after sending the uplink data.
  • the upstream data is used to instruct the communication device to request the HARQ process to send uplink data to the network device through the hybrid automatic retransmission.
  • the communication device after sending the uplink data through the HARQ process, the communication device will empty the uplink data in the HARQ cache corresponding to the HARQ process in time according to the instruction information of the network device, thereby improving the utilization rate of the cache.
  • the indication information is used to instruct the communication device to send the uplink data on at least two frequency domain resources or at least two radio bearers Clearing the uplink data in the HARQ cache; the communication device clearing the uplink data in the HARQ cache corresponding to the HARQ process according to the instruction information, including: the communication device determines to send the uplink data There are at least two frequency domain resources or radio bearers of the uplink data; the communication device clears the uplink data in the HARQ buffer after the uplink data is sent according to the indication information.
  • the indication information can be characterized by the number of frequency domain resources, and when there are two or more frequency domain resources used to send uplink data, HARQ can be cleared in time When the uplink data in the cache is improved, the diversity of the indication information is also realized when the cache utilization rate is improved.
  • the indication information is used to instruct the communication device to clear the HARQ buffer after sending the uplink data in at least two time domain resources The uplink data; the communication device clearing the uplink data in the HARQ buffer corresponding to the HARQ process according to the instruction information, including: the time domain resource determined by the communication device for sending the uplink data There are at least two; the communication device clears the uplink data in the HARQ buffer after the uplink data is sent according to the instruction information.
  • the indication information can be characterized by the number of time domain resources, and when there are two or more time domain resources used to send uplink data, HARQ can be cleared in time When the uplink data in the cache is improved, the diversity of the indication information is also realized when the cache utilization rate is improved.
  • the indication information is used to indicate that when the scheduling information is scrambled by using the target scrambling method, the uplink data is cleared after the uplink data is sent.
  • the target scrambling method may include a modulation and coding method-a temporary identification of a cell wireless network (MCS-C-RNTI), a temporary identification of a cell wireless network (C-RNTI), a cell radio network temporary identity (C-C-RNTI) RNTI) or configure temporary radio network temporary configuration (CS-RNTI), that is, the target scrambling method may include one of MCS-C-RNTI, C-RNTI, and CS-RNTI.
  • MCS-C-RNTI modulation and coding method-a temporary identification of a cell wireless network
  • C-RNTI a temporary identification of a cell wireless network
  • C-C-RNTI cell radio network temporary identity
  • CS-RNTI configure temporary radio network temporary configuration
  • the indication information can be characterized by the target scrambling mode of the scheduling information.
  • the scheduling information is scrambled by the target scrambling mode, the HARQ cache is cleared.
  • the uplink data is improved, the uplink data also realizes diversity of indication information.
  • the indication information is used to instruct the communication device to clear the HARQ after sending the uplink data including the identification information of the target logical channel
  • the uplink data in the cache the communication device clearing the uplink data in the HARQ cache corresponding to the HARQ process according to the instruction information, including: the communication device determining that the uplink data contains target logic Identification information of the channel; according to the instruction information, after sending the uplink data, the communication device clears the uplink data in the HARQ buffer.
  • the target logical channel refers to a channel that needs to be cleared of the corresponding HARQ buffer in time after uplink data is sent, for example, a channel used to carry an ultra-reliable low-latency service URLLC.
  • the indication information can be characterized by the identification information of the target logical channel.
  • the uplink data includes the identification information of the target logical channel, all the HARQ buffers are cleared.
  • the above-mentioned uplink data also realizes the diversity of the indication information when the cache utilization rate is improved.
  • the indication information is used to instruct the communication device to clear the uplink data after sending the uplink data that includes the target protocol data unit session PDU session information
  • the uplink data in the HARQ cache, and the communication device clearing the uplink data in the HARQ cache corresponding to the HARQ process according to the indication information includes the communication device determining that the uplink data includes a target PDU session information; according to the instruction information, after sending the uplink data, the communication device clears the uplink data in the HARQ buffer.
  • the target PDU session refers to a session in which the corresponding HARQ cache needs to be cleared in time after the uplink data is sent, for example, a session used to carry an ultra-reliable low-latency service URLLC.
  • the indication information can be characterized by the information of the PDU session, and when the uplink data includes the information of the PDU session, the uplink data in the HARQ buffer is cleared, When the cache utilization rate is improved, the diversity of indication information is also realized.
  • the indication information includes a timer configured by the network device, and the indication information is used to instruct to clear the place after the timer expires The uplink data in the HARQ cache; the communication device clearing the uplink data in the HARQ cache corresponding to the HARQ process according to the instruction information, including: the communication device starts after sending the uplink data Or restart the timer and perform time monitoring; according to the indication information, the communication device clears the uplink data in the HARQ cache after the timer expires.
  • the timer is a newly defined timer or an existing timer.
  • a timer can be used to characterize the indication information, a timer is started after uplink data is sent, and after the timer expires, the uplink in the HARQ cache is cleared The data, while improving the cache utilization rate, also realizes the diversity of indication information.
  • the indication information includes a timer and a preset duration, and the indication information is used to indicate that after the timer expires, wait for all Clearing the uplink data in the HARQ buffer after the preset duration; according to the indication information, the communication device clearing the uplink data in the HARQ buffer corresponding to the HARQ process includes: the communication device After sending the uplink data, start or restart the timer and perform time monitoring; according to the instruction information, after the timer expires and the preset duration also arrives, clear all the HARQ cache Describe the upstream data.
  • a timer plus a preset duration can be used to characterize the indication information, a timer is started after the uplink data is sent, and after the timer expires, the preset duration is waited, and then Clearing the uplink data in the HARQ cache also realizes diversity of indication information when improving the cache utilization rate.
  • the scheduling information and the instruction information can be carried in radio resource control (RRC) dedicated signaling, media access control unit (multi-medium access control element, MAC CE) or downlink control information (DCI).
  • RRC radio resource control
  • MAC CE media access control unit
  • DCI downlink control information
  • a second aspect of the present application provides a method for buffer management, including: a network device determining scheduling information and instruction information, the scheduling information used to instruct a communication device to send uplink data to the network device through a hybrid automatic repeat request HARQ process, The indication information is used to instruct the communication device to clear the uplink data in the HARQ buffer corresponding to the HARQ process after sending the uplink data; the network device sends the scheduling information and the Instructions.
  • the network device may instruct the communication device to promptly clear the uplink data in the HARQ cache corresponding to the HARQ process after sending the uplink data through the HARQ process, thereby improving the utilization rate of the cache.
  • the determining of the indication information by the network device includes: the network device determining that the number of frequency domain resources used by the communication device to send the uplink data is at least two The number is the indication information.
  • the indication information is used to instruct the communication device to clear all the HARQ buffers after sending the uplink data on at least two frequency domain resources or at least two radio bearers. Describe the upstream data.
  • the indication information can be characterized by the number of frequency domain resources, and when there are two or more frequency domain resources used to send uplink data, HARQ can be cleared in time When the uplink data in the cache is improved, the diversity of the indication information is also realized when the cache utilization rate is improved.
  • the determining information by the network device includes:
  • the network device determines that the number of time domain resources used by the communication device to send the uplink data is at least two, and the number is the indication information, and the indication information is used to indicate that the communication device is in at least two After sending the uplink data in a time domain resource, clear the uplink data in the HARQ buffer.
  • the indication information can be characterized by the number of time domain resources, and when there are two or more time domain resources used to send uplink data, the communication device is instructed to clear When the uplink data in the HARQ buffer improves the buffer utilization rate of the communication device, the diversity of the indication information is also realized.
  • the determining, by the network device, the indication information includes: the network device determining that the target scrambling mode of the scheduling information is the indication information, and the indication information is used to indicate When the scheduling information is scrambled in a target scrambling manner, after sending the uplink data, the uplink data in the HARQ buffer is cleared.
  • the indication information can be characterized by the target scrambling mode of the scheduling information, and when the scheduling information is scrambled by the target scrambling mode, the communication device is instructed to clear the HARQ
  • the uplink data in the cache is improved
  • the diversity of the indication information is also realized when the utilization rate of the buffer of the communication device is improved.
  • the determining, by the network device, the indication information includes: the network device determining that the identification information of the target logical channel is the indication information, and the indication information is used to indicate
  • the communication device clears the uplink data in the HARQ buffer after sending the uplink data including the identification information of the target logical channel, wherein the target logical channel refers to that the corresponding HARQ needs to be cleared in time after the uplink data is sent
  • the buffered channel may be, for example, a channel used to carry an ultra-reliable low-latency service URLLC.
  • the indication information can be characterized by the identification information of the target logical channel, and the network device instructs the communication device to clear the indication information when the uplink data contains the identification information of the target logical channel
  • the uplink data in the HARQ buffer improves the buffer utilization rate of the communication device, the diversity of the indication information is also realized.
  • the determining, by the network device, the indication information includes: the network device determining that the information of the target protocol data unit session PDU session is the indication information, and the indication information is used To instruct the communication device to clear the uplink data in the HARQ buffer after sending the uplink data including the information of the target protocol data unit session PDU session, where the target PDU session refers to the uplink data transmission Afterwards, the session corresponding to the HARQ cache needs to be cleared in time, for example, a session used to carry a URLLC of ultra-reliable and low-latency service.
  • the indication information can be represented by the information of the PDU session, and the network device instructs the communication device to clear all the HARQ cache when the uplink data contains the information of the PDU session
  • the above-mentioned uplink data also realizes the diversity of indication information when improving the buffer utilization rate of the communication device.
  • the determining, by the network device, the indication information includes: the network device determining the timer as the indication information, and the indication information is used to indicate the communication device Clearing the uplink data in the HARQ buffer after the timer expires.
  • a timer can be used to characterize the indication information, and the network device instructs the communication device to start the timer after the uplink data is sent, and after the timer expires, clear the HARQ cache
  • the determining, by the network device, the indication information includes: the network device determining the timer and the preset duration as the indication information, and the indication information is used to indicate After the expiration of the timer, the communication device waits for the preset duration to clear the uplink data in the HARQ buffer.
  • a timer plus a preset duration can be used to characterize the indication information.
  • the network device instructs the communication device to start the timer after the uplink data is sent, and waits after the timer expires With a preset duration, the uplink data in the HARQ cache is emptied, and when the cache utilization rate is improved, the diversity of the indication information is also achieved.
  • a third aspect of the present application provides a communication device, which is used to perform the method for cache management in the first aspect or any possible implementation manner of the first aspect.
  • the terminal device may include a module for performing the method of cache management in the first aspect or any possible implementation manner of the first aspect.
  • a fourth aspect of the present application provides a communication device.
  • the terminal device includes a memory and a processor.
  • the memory is used to store instructions.
  • the processor is used to execute the instructions stored in the memory. Execution of the instructions causes the processor to execute the method in the first aspect or any possible implementation manner of the first aspect.
  • a fifth aspect of the present application provides a computer-readable storage medium on which a computer program is stored, which when executed by a processor implements the first aspect or the method in any possible implementation manner of the first aspect.
  • a sixth aspect of the present application provides a network device that is used to perform the method for cache management in the second aspect or any possible implementation manner of the second aspect.
  • the network device may include a module for performing the method of cache management in the second aspect or any possible implementation manner of the second aspect.
  • a seventh aspect of the present application provides a network device.
  • the network device includes a memory and a processor.
  • the memory is used to store instructions.
  • the processor is used to execute the instructions stored in the memory.
  • the execution of the instructions causes the processor to execute the method in the second aspect or any possible implementation manner of the second aspect.
  • An eighth aspect of the present application provides a computer-readable storage medium on which a computer program is stored, which when executed by a processor implements the second aspect or the method in any possible implementation manner of the second aspect.
  • the terminal device after sending the uplink data through the HARQ process, the terminal device will empty the uplink data in the HARQ cache corresponding to the HARQ process in time according to the instruction information of the network device, thereby improving the utilization rate of the cache.
  • FIG. 1 is a schematic diagram of an embodiment of a communication system in an embodiment of the present application
  • FIG. 2 is a schematic diagram of an embodiment of a method for cache management in an embodiment of the present application
  • FIG. 3 is a schematic diagram of an example of a dual link scenario
  • FIG. 4 is a schematic diagram of another embodiment of a method for cache management in an embodiment of the present application.
  • FIG. 5 is a schematic diagram of an embodiment of a communication device in an embodiment of the present application.
  • FIG. 6 is a schematic diagram of another embodiment of a communication device in an embodiment of this application.
  • FIG. 7 is a schematic diagram of an embodiment of a network device in an embodiment of the present application.
  • FIG. 8 is a schematic diagram of another embodiment of a network device in an embodiment of this application.
  • FIG. 9 is a schematic block diagram of a communication device provided by an embodiment of this application.
  • FIG. 10 is another schematic diagram of a communication device provided by an embodiment of this application.
  • FIG. 11 is still another schematic diagram of a communication device provided by an embodiment of this application.
  • FIG. 12 is another schematic diagram of a network device provided by an embodiment of this application.
  • the embodiments of the present application provide a method for cache management, which can clear the data in the HARQ buffer in time, thereby improving the utilization rate of the cache.
  • the embodiments of the present application also provide corresponding equipment. The details are described below.
  • LTE long term evolution
  • UMTS universal mobile telecommunications system
  • UTRAN universal mobile telecommunications system
  • GSM global system for mobile
  • EDGE enhanced data rate GSM evolution
  • GSM EDGE radio access network GSM EDGE radio access network
  • the function of the MME is performed by a general packet radio service (GPRS) support node (serving GPRS support, SGSN), and the function of SGW ⁇ PGW is provided by the gateway GPRS support node (gateway GPRS support (node, GGSN) is completed.
  • GPRS general packet radio service
  • gateway GPRS support node gateway GPRS support node
  • PLMN public land mobile network
  • 5G communication system or a communication system after 5G, etc. This embodiment of the present application does not limit this .
  • the terminal device may be a device that includes a wireless transceiver function and can cooperate with a network device to provide a communication service for a user.
  • terminal equipment may refer to user equipment (user equipment (UE), access terminal, user unit, user station, mobile station, mobile station, remote station, remote terminal, mobile device, user terminal, terminal, wireless communication device, User agent or user device.
  • UE user equipment
  • the terminal device may be a cellular phone, a cordless phone, a session initiation protocol (SIP) phone, a wireless local loop (WLL) station, a personal digital processing (personal digital ssistant, PDA), a wireless Handheld devices, computing devices or other processing devices connected to a wireless modem, in-vehicle devices, wearable devices, terminal devices in a 5G network or a network after 5G, etc., which are not limited by the embodiments of the present application.
  • SIP session initiation protocol
  • WLL wireless local loop
  • PDA personal digital processing
  • PDA personal digital ssistant
  • the embodiments of the present application also relate to network equipment.
  • the network device may be a device used to communicate with the terminal device, for example, it may be a base station (BTS) in GSM system or CDMA, or a base station (NodeB, NB) in WCDMA system, or it may be Evolutionary base station (evolutional node B, eNB or eNodeB) in the LTE system, or the network device may be a relay station, an access point, an in-vehicle device, a wearable device, and a network side device in a future 5G network or a network after 5G Network equipment in the PLMN network that will evolve in the future.
  • BTS base station
  • NodeB NodeB
  • NB base station
  • eNodeB Evolutionary base station
  • the network device may be a relay station, an access point, an in-vehicle device, a wearable device, and a network side device in a future 5G network or a network after 5G Network equipment in
  • the network equipment involved in the embodiments of the present application may also be referred to as a radio access network (radio access network, RAN) equipment.
  • the RAN device is connected to the terminal device and is used to receive data from the terminal device and send it to the core network device.
  • RAN devices correspond to different devices in different communication systems, for example, correspond to base stations and base station controllers in 2G systems, and correspond to base stations and radio network controllers (radio network controllers, RNCs) in 3G systems, and evolve in 4G systems.
  • the evolutionary base station evolutional node B, eNB
  • FIG. 1 is a schematic diagram of an embodiment of a communication system in an embodiment of the present application.
  • an embodiment of the communication system provided by the embodiment of the present application includes:
  • the network device and the communication device, the communication device may be a terminal device, in the following embodiments, the communication device is a terminal device as an example for description, in addition to the terminal device, the communication device in the embodiment of the present application may also be a circuit, should not It is understood to be only terminal equipment.
  • each HARQ process in the terminal device corresponds to a HARQ cache, for example: HARQ process 1 corresponds to HARQ cache 1, HARQ process 2 corresponds to HARQ cache 2, HARQ process N corresponds to HARQ cache N, and the N It is an integer greater than 2.
  • the correspondence between the HARQ process and the HARQ cache is not limited to the HARQ process 1 shown in FIG. 1 corresponding to the HARQ cache 1, it may be that the HARQ process 1 corresponds to the HARQ cache 2, but each HARQ process 1 will correspond to a HARQ cache , That is to say, the HARQ process corresponds to the HARQ cache in one-to-one correspondence.
  • the sending of uplink data by the terminal device needs to be performed according to the scheduling of the network device.
  • the terminal device caches the sent uplink data in the HARQ buffer corresponding to the HARQ process used. Because cache resources are limited, in order to improve the utilization rate of the cache, the embodiments of the present application provide a cache management method.
  • an embodiment of the cache management method provided by the embodiment of the present application may include:
  • the network device determines scheduling information and instruction information.
  • the network device When the network device schedules the terminal device to send uplink data, it will determine scheduling information and instruction information.
  • the scheduling information is used to instruct the terminal device to send uplink data to the network device through a hybrid automatic repeat request HARQ process, and the instruction information is used to indicate After sending the uplink data, the terminal device clears the uplink data in the HARQ buffer corresponding to the HARQ process.
  • the network device sends scheduling information and instruction information to the terminal device.
  • the scheduling information includes resources used to send uplink data, such as time domain resources or frequency domain resources, and HARQ process information, such as: HARQ process number or HARQ process name.
  • resources used to send uplink data such as time domain resources or frequency domain resources
  • HARQ process information such as: HARQ process number or HARQ process name.
  • the scheduling information may also include other information, For example: sending time, etc.
  • Scheduling information and instructions can be carried in radio resource control (RRC) dedicated signaling, media access control unit (multi-medium access control element, MAC) or downlink control information (downlink control indicator, DCI) Send to the terminal device.
  • RRC radio resource control
  • media access control unit multi-medium access control element, MAC
  • DCI downlink control indicator
  • the terminal device After receiving the scheduling information and the instruction information sent by the network device, the terminal device sends the uplink data to the network device through a hybrid automatic retransmission request HARQ process according to the scheduling information.
  • the uplink data is cached in the HARQ buffer corresponding to the HARQ process, for example, the network device indicates that the HARQ process 1 is used to send the uplink data in the scheduling information .
  • the terminal device uses HARQ process 1 to send uplink data, it will buffer the uplink data in HARQ buffer 1.
  • the terminal device clears the uplink data in the HARQ buffer corresponding to the HARQ process according to the instruction information.
  • the terminal device After the uplink data is sent, the terminal device will clear the uplink data in the HARQ cache corresponding to the HARQ process according to the instruction information sent by the network device, that is, the terminal device will clear the uplink buffered in the HARQ cache 1 according to the instruction information data.
  • the terminal device after sending uplink data through the HARQ process, the terminal device will promptly clear the uplink data in the HARQ buffer corresponding to the HARQ process according to the instruction information of the network device, thereby improving the Cache utilization.
  • the success rate of new transmission is extremely high, and the transmission delay requirement is extremely high, so a long time Buffering the uplink data of this type of business scenario does not make much sense. Therefore, in this type of business scenario, after the terminal device sends the uplink data, the uplink data in the HARQ cache can be cleared. In such scenarios, if the HARQ cache is not cleared in time, the data in which the HARQ cache becomes invalid may be transmitted again, resulting in abnormal data transmission. Therefore, the improved cache management method of the present application can clear the uplink data in the HARQ cache in time after the uplink data is sent, and colleagues who increase the cache utilization rate also ensure the validity and freshness of data transmission.
  • ultra-reliability and low latency ultra-reliability, low latency, communication, URLLC
  • a dual-link service scenario such as: NR duplication, as shown in Figure 3, each time the terminal device sends uplink data to the network device, it will occupy link 1 and link 2 to send the same data, even if link 1 appears Due to the problem of delayed transmission, the network device cannot receive the uplink data sent by the terminal device, but the uplink data transmitted through link 2 will be transmitted to the network device in time, and it can also ensure that the network device receives the uplink data sent by the terminal device in time, so In the dual link scenario, there is no need to cache the uplink data for a long time. In the dual-link scenario, if the data in the HARQ cache is not timely, when it is scheduled again, the invalid data in the HARQ cache may be scheduled, causing abnormal data transmission. Therefore, the improved cache management method of the present application can clear the uplink data in the HARQ cache in time after the uplink data is sent, and colleagues who increase the cache utilization rate also ensure the validity and freshness of data transmission.
  • the uplink data in the HARQ buffer can be cleared.
  • the scenario where the service is located is determined by the network device, so the network device can send indication information when scheduling uplink data to instruct the terminal device to clear the uplink data in the HARQ buffer after sending the uplink data. Clearing the uplink data in the HARQ buffer may be immediately after the uplink data is sent, according to the instruction information, or may be cleared after a delay.
  • indicating information there may be various forms of indicating information, which may be indicated in an implicit manner or in a displayed manner.
  • the indication information is characterized by the number of frequency domain resources or the time domain resources, and the number can be indicated by a direct quantity, for example: 2, 3, 4, or the number of display methods
  • the indication information may also be characterized by an implicit number of resources 1, resource 2, and resource 3.
  • the three resources implicitly shown here are only examples and should not be interpreted as limiting the number of resources. Whether it is a frequency domain resource or a time domain resource, only two or more are used to instruct to clear the uplink data in the HARQ buffer after the terminal device sends the uplink data.
  • the network device determines that there are at least two frequency domain resources used by the terminal device to send the uplink data.
  • the number is the indication information, and the indication information is used to indicate the terminal device.
  • the network device After sending the uplink data in at least two time domain resources, clear the uplink data in the HARQ buffer.
  • the terminal device determines that there are at least two frequency domain resources or radio bearers for sending the uplink data according to the instruction information; after the uplink data is sent, the terminal device clears all the HARQ cache Describe the upstream data.
  • the frequency domain resource may be a component carrier CC and / or a bandwidth (part of bandwidth, BWP).
  • the network device determines that the number of time domain resources used by the terminal device to send the uplink data is at least two, the number is the indication information, and the indication information is used to indicate the terminal device After sending the uplink data in at least two time domain resources, clear the uplink data in the HARQ buffer.
  • the terminal device determines that there are at least two time domain resources for sending the uplink data according to the instruction information; after the uplink data is sent, the terminal device clears the uplink data in the HARQ buffer .
  • Time domain resources include at least one of the following: subframes, time slots, and symbols.
  • the at least two time-domain resources may or may not be continuous.
  • the uplink data may be repeatedly sent on at least two time domain resources, or may be sent only once.
  • the indication information may also be characterized by information such as the target scrambling method of the scheduling information, the identification information of the target logical channel, the information of the target protocol data unit session PDU session, or the timer or timer plus a preset duration, Introduced separately below.
  • the network device determines that the target scrambling mode of the scheduling information is the indication information, and the indication information is used to indicate that when the scheduling information is scrambled using the target scrambling mode, the HARQ buffer is cleared after sending the uplink data The uplink data.
  • the terminal device determines that the scheduling information is scrambled using a target scrambling method according to the instruction information, and according to the instruction information, after sending the uplink data, the terminal device clears the HARQ cache. Upstream data.
  • the target scrambling methods include modulation and coding methods-cell radio network temporary identity (modulation and coding scheme, cell radio network identity, MCS-C-RNTI), cell radio network temporary identity (cell radio network identity, C-RNTI) ) And one of the provisioning scheduling wireless network temporary configuration (configure scheduling radio network identity (CS-RNTI)).
  • the network device determines that the identification information of the target logical channel is the indication information, and the indication information is used to instruct the terminal device to clear the HARQ buffer after sending the uplink data including the identification information of the target logical channel
  • the uplink data, the target logical channel is used to carry the ultra-reliable low-latency service URLLC.
  • the terminal device determines that the uplink data includes identification information of the target logical channel, and according to the indication information, after sending the uplink data, the terminal device clears the uplink data in the HARQ buffer.
  • the network device determines that the information of the target protocol data unit session PDU session is the indication information.
  • the indication information is used to instruct the terminal device to clear the location after sending the uplink data including the information of the target protocol data unit session PDU session.
  • the uplink data in the HARQ cache, and the target PDU session are used to carry the ultra-reliable low-latency service URLLC.
  • the terminal device determines that the uplink data includes information of a target PDU session, and according to the instruction information, after sending the uplink data, the terminal device clears the uplink data in the HARQ buffer.
  • the network device determines the timer as the indication information, and the indication information is used to instruct the terminal device to clear the uplink data in the HARQ cache after the timer expires.
  • the terminal device After sending the uplink data, the terminal device starts or restarts the timer and performs time monitoring; according to the instruction information, the communication device clears the uplink in the HARQ cache after the timer expires data.
  • the network device determines the timer and the preset duration as the indication information, and the indication information is used to instruct the terminal device to clear the HARQ after waiting for the preset duration after the timer expires The uplink data in the cache.
  • the terminal device After sending the uplink data, the terminal device starts or restarts the timer and performs time monitoring. According to the indication information, the communication device clears the place after the timer expires, and the preset duration also arrives The uplink data in the HARQ buffer.
  • the timer is a newly defined timer or an existing timer.
  • the newly defined timer means that there is no previous configuration of the network device, and the network device will configure the timer name and timing duration and other information.
  • the existing timer indicates that the configuration has been completed before, and the network device and the terminal device side already know the name and timing duration of the timer. The network device only needs to notify the terminal device of the timer name or number information .
  • the indication information can also be characterized directly by a preset duration without configuring a timer.
  • a preset duration without configuring a timer.
  • the network device determines a preset duration as the indication information, and the indication information is used to instruct the terminal device to clear the HARQ cache after waiting for the preset duration after sending the uplink data.
  • the uplink data The uplink data.
  • the terminal device performs time monitoring, and after sending the uplink data, starts the time monitoring, and clears the uplink data in the HARQ buffer after the preset duration is reached.
  • another embodiment of the cache management method provided by the embodiment of the present application may include:
  • the network device determines scheduling information and configures time information for the scheduling information.
  • the time information includes a timer and / or a preset duration.
  • the timer and / or the preset duration include the timer or the preset duration, and three cases of the timer and the preset duration.
  • the network device sends scheduling information and time information to the terminal device.
  • the terminal device After receiving the scheduling information and the time information, the terminal device sends HARQ process to the network device by using a hybrid automatic retransmission request HARQ process according to the scheduling information.
  • the uplink time is simultaneously buffered in the HARQ buffer corresponding to the HARQ process.
  • the terminal device performs time monitoring after sending the uplink data.
  • the start time of the timer can be understood as that the timer is started as soon as the uplink data is sent.
  • the terminal device after sending the uplink data through the HARQ process, the terminal device will clear the uplink in the HARQ buffer corresponding to the HARQ process after the timer and / or the preset time period arrives according to the instruction information of the network device Data, thereby improving the utilization of the cache.
  • the network device will instruct to discard the uplink data of link 1, but HARQ buffer does not clear the uplink data. If it is scheduled again The data on the link 1 may cause the sequence number of the network device side to receive the uplink data to be out of order.
  • the solution provided by the embodiment of the present application will clear the data in the HARQ buffer in time, which can reduce the data retention in the HARQ buffer Time, reduce memory consumption, and also avoid the problem of out-of-sequence sequence numbers caused when the data in the HARQ buffer is not scheduled for a long time.
  • FIG. 5 is a schematic diagram of a communication device 30 provided by an embodiment of the present application.
  • the communication device 30 includes:
  • the transceiver module 310 is configured to receive scheduling information and instruction information sent by the network device, and according to the scheduling information, request the HARQ process to send uplink data to the network device through a hybrid automatic retransmission;
  • the processing module 320 is configured to clear the uplink data in the HARQ buffer corresponding to the HARQ process according to the instruction information received by the transceiver module 310.
  • the communication device after sending the uplink data through the HARQ process, the communication device will promptly clear the uplink data in the HARQ cache corresponding to the HARQ process according to the instruction information of the network device, thereby improving the utilization rate of the cache.
  • the processing module 320 is configured to clear the location after the indication information is used to instruct the communication device to send the uplink data on at least two frequency domain resources or at least two radio bearers
  • the processing module 320 is configured to clear the location after the indication information is used to instruct the communication device to send the uplink data on at least two frequency domain resources or at least two radio bearers
  • the processing module 320 is configured to clear the HARQ buffer after the indication information is used to instruct the communication device to send the uplink data in at least two time-domain resources. During the uplink data, it is determined that there are at least two time domain resources for sending the uplink data, and according to the instruction information, after the uplink data is sent, the uplink data in the HARQ buffer is cleared.
  • the processing module 320 is configured to clear the HARQ buffer after the indication information is used to instruct the communication device to send the uplink data including the identification information of the target logical channel When determining that the uplink data includes identification information of the target logical channel in the uplink data, after sending the uplink data according to the indication information, clear the uplink data in the HARQ buffer.
  • the processing module 320 is configured to clear the HARQ buffer after the indication information is used to instruct the communication device to send uplink data including information of a target protocol data unit session PDU session
  • the uplink data in is determined, it is determined that the uplink data includes the information of the target PDU session, and according to the instruction information, after the uplink data is sent, the uplink data in the HARQ buffer is cleared.
  • the processing module 320 is configured to include a timer configured by the network device in the indication information, and the indication information is used to instruct to clear the HARQ after the timer expires.
  • the timer is started or restarted and time monitoring is performed, and the HARQ cache is cleared after the timer expires Upstream data.
  • the processing module 320 is configured to: when the indication information includes a timer and a preset duration, the indication information is used to indicate that after the timer expires, wait for the preset
  • the indication information is used to indicate that after the timer expires, wait for the preset
  • the uplink data in the HARQ buffer is cleared after setting the duration, according to the instruction information, after the uplink data is sent, the timer is started or restarted and time monitoring is performed. After the timer expires, and After the preset duration is reached, the uplink data in the HARQ buffer is cleared.
  • processing module 320 in the embodiments of the present application may be implemented by a processor or a processor-related circuit component
  • the transceiver module 310 may be implemented by a transceiver or a transceiver-related circuit component.
  • an embodiment of the present application further provides a communication device 40.
  • the communication device 40 includes a processor 410, a memory 420, and a transceiver 430, where the memory 420 stores instructions or programs, and the processor 410 is used to execute Instructions or programs stored in the memory 420.
  • the processor 410 is used to perform the operation performed by the processing module 320 in the foregoing embodiment
  • the transceiver 430 is used to perform the operation performed by the transceiver module 310 in the foregoing embodiment.
  • the communication device 30 or the communication device 40 may correspond to the terminal device in the cache management method of the embodiment of the present application, and the operations and / or operations of the various modules in the communication device 30 or the communication device 40 and / or The functions are to implement the corresponding processes of the methods in FIGS. 2 to 4, respectively, and for the sake of brevity, they will not be repeated here.
  • the network device 50 includes:
  • the processing module 510 is configured to determine scheduling information and instruction information, the scheduling information is used to instruct the communication device to send uplink data to the network device through a hybrid automatic repeat request HARQ process, and the instruction information is used to instruct the communication device After sending the uplink data, clear the uplink data in the HARQ buffer corresponding to the HARQ process;
  • the transceiver module 520 is configured to send the scheduling information and the indication information determined by the processing module 510 to a communication device.
  • the network device may instruct the communication device to promptly clear the uplink data in the HARQ cache corresponding to the HARQ process after sending the uplink data through the HARQ process, thereby improving the utilization rate of the cache.
  • the processing module 510 is configured to determine that there are at least two frequency domain resources used by the terminal device to send the uplink data, and the number is the indication information.
  • the indication information is used to instruct the terminal device to clear the uplink data in the HARQ buffer after sending the uplink data in at least two frequency domain resources or at least two radio bearers.
  • the processing module 510 is configured to determine that the number of time domain resources used by the terminal device to send the uplink data is at least two, and the number is the indication information.
  • the indication information is used to instruct the terminal device to clear the uplink data in the HARQ buffer after sending the uplink data in at least two time domain resources.
  • the processing module 510 is configured to determine that the target scrambling mode of the scheduling information is the indication information, and the indication information is used to indicate when the scheduling information is scrambled using the target scrambling mode , After sending the uplink data, clear the uplink data in the HARQ buffer.
  • the processing module 510 is configured to determine that the identification information of the target logical channel is the indication information, and the indication information is used to indicate that the terminal device has sent the identification information containing the target logical channel After the uplink data, clear the uplink data in the HARQ buffer.
  • the processing module 510 is configured to determine that the information of the target protocol data unit session PDU session is the indication information, and the indication information is used to indicate that the terminal device sends the data containing the target protocol data. After the uplink data of the unit session PDU session information, the uplink data in the HARQ buffer is cleared.
  • the processing module 510 is configured to determine a timer as the indication information, and the indication information is used to instruct the terminal device to clear the HARQ cache after the timer expires The uplink data in.
  • the processing module 510 is configured to determine a timer and preset duration as the indication information, and the indication information is used to instruct the terminal device to expire after the timer expires. Then wait for the preset duration to clear the uplink data in the HARQ buffer.
  • processing module 510 in the embodiment of the present application may be implemented by a processor or a processor-related circuit component
  • transceiver module 520 may be implemented by a transceiver or a transceiver-related circuit component.
  • an embodiment of the present application further provides a network device 60.
  • the network device 60 includes a processor 610, a memory 620, and a transceiver 630, where the memory 620 stores instructions or programs, and the processor 610 is used to execute Instructions or programs stored in the memory 620.
  • the processor 610 is used to perform the operation performed by the processing module 510 in the foregoing embodiment
  • the transceiver 630 is used to perform the operation performed by the transceiver module 520 in the foregoing embodiment.
  • the network device 50 or the network device 60 may correspond to the network device in the cache management method of the embodiment of the present application, and the operations and / or operations of the various modules in the network device 50 or the network device 60
  • the functions are to implement the corresponding processes of the methods in FIGS. 2 to 4, respectively, and for the sake of brevity, they will not be repeated here.
  • Embodiments of the present application also provide a computer-readable storage medium on which a computer program is stored.
  • a process related to a terminal device in the method for cache management provided by the foregoing method embodiment may be implemented.
  • An embodiment of the present application further provides a computer-readable storage medium on which a computer program is stored, and when the program is executed by a processor, a process related to a network device in the cache management method provided by the foregoing method embodiment may be implemented.
  • An embodiment of the present application further provides a communication device, and the communication device may be a terminal device or a circuit.
  • the communication device may be used to perform the actions performed by the terminal device in the foregoing method embodiments.
  • FIG. 9 shows a simplified structural diagram of the terminal device. It is easy to understand and convenient to illustrate.
  • the terminal device uses a mobile phone as an example.
  • the terminal device includes a processor, a memory, a radio frequency circuit, an antenna, and input and output devices.
  • the processor is mainly used for processing communication protocols and communication data, as well as controlling terminal devices, executing software programs, and processing software program data.
  • the memory is mainly used to store software programs and data.
  • the radio frequency circuit is mainly used for the conversion of the baseband signal and the radio frequency signal and the processing of the radio frequency signal.
  • the antenna is mainly used to send and receive radio frequency signals in the form of electromagnetic waves.
  • Input and output devices such as touch screens, display screens, and keyboards, are mainly used to receive data input by the user and output data to the user. It should be noted that some types of terminal devices may not have input / output devices.
  • the processor When data needs to be sent, the processor performs baseband processing on the data to be sent, and outputs the baseband signal to the radio frequency circuit.
  • the radio frequency circuit processes the baseband signal after radio frequency processing, and then sends the radio frequency signal to the outside in the form of electromagnetic waves through the antenna.
  • the radio frequency circuit receives the radio frequency signal through the antenna, converts the radio frequency signal into a baseband signal, and outputs the baseband signal to the processor.
  • the processor converts the baseband signal into data and processes the data.
  • FIG. 9 only one memory and processor are shown in FIG. 9. In actual terminal equipment products, there may be one or more processors and one or more memories.
  • the memory may also be referred to as a storage medium, storage device, or the like.
  • the memory may be set independently of the processor, or may be integrated with the processor, which is not limited in the embodiments of the present application.
  • an antenna and a radio frequency circuit with a transceiver function can be regarded as a transceiver unit of a terminal device, and a processor with a processing function can be regarded as a processing unit of the terminal device.
  • the terminal device includes a transceiver unit 710 and a processing unit 720.
  • the transceiver unit may also be called a transceiver, a transceiver, a transceiver device, or the like.
  • the processing unit may also be called a processor, a processing board, a processing module, a processing device, and the like.
  • the device used to implement the receiving function in the transceiver unit 710 can be regarded as a receiving unit, and the device used to implement the sending function in the transceiver unit 710 can be regarded as a sending unit, that is, the transceiver unit 710 includes a receiving unit and a sending unit.
  • the transceiver unit may sometimes be called a transceiver, a transceiver, or a transceiver circuit.
  • the receiving unit may sometimes be called a receiver, a receiver, or a receiving circuit.
  • the sending unit may sometimes be called a transmitter, a transmitter, or a transmitting circuit.
  • transceiving unit 710 is used to perform the sending operation and the receiving operation on the terminal device side in the above method embodiment
  • processing unit 720 is used to perform other operations on the terminal device other than the transceiving operation in the above method embodiment.
  • the transceiving unit 710 is used to perform the receiving or sending operation on the terminal device side in steps 102 and 103 in FIG. 2, and / or the transceiving unit 710 is also used to perform the terminal device in the embodiments of the present application On the other side.
  • the processing unit 720 is configured to execute step 104 in FIG. 2 and / or the processing unit 720 is further configured to execute other processing steps on the terminal device side in the embodiments of the present application.
  • the transceiving unit 710 is used to perform the receiving operation on the terminal device side in step 202 in FIG. 4 or the transmitting operation on the terminal device side in step 203, and / or the transceiving unit 720 is also used to perform Other sending and receiving steps on the terminal device side in the embodiments of the present application.
  • the processing unit 720 is used to execute step 204 in FIG. 4, and / or the processing unit 720 is also used to execute other processing steps on the terminal device side in the embodiments of the present application.
  • the chip When the communication device is a chip, the chip includes a transceiver unit and a processing unit.
  • the transceiver unit may be an input-output circuit and a communication interface;
  • the processing unit is a processor or microprocessor or integrated circuit integrated on the chip.
  • the device can perform functions similar to the processor 410 in FIG. 6.
  • the device includes a processor 810, a transmission data processor 820, and a reception data processor 830.
  • the processing module 320 in the above embodiment may be the processor 810 in FIG. 10 and complete the corresponding functions.
  • the transceiver module 310 in the above embodiment may be the sending data processor 820 and / or the receiving data processor 830 in FIG. 10.
  • a channel encoder and a channel decoder are shown in FIG. 10, it can be understood that these modules do not constitute a restrictive description of this embodiment, but are only schematic.
  • FIG. 11 shows another form of this embodiment.
  • the processing device 900 includes modules such as a modulation subsystem, a central processing subsystem, and peripheral subsystems.
  • the communication device in this embodiment can serve as the modulation subsystem therein.
  • the modulation subsystem may include a processor 903 and an interface 904.
  • the processor 903 performs the function of the processing module 320 described above
  • the interface 904 performs the function of the transceiver module 310 described above.
  • the modulation subsystem includes a memory 906, a processor 903, and a program stored on the memory 906 and executable on the processor.
  • the terminal device side in the above method embodiment is implemented Methods.
  • the memory 906 may be non-volatile or volatile, and its location may be located inside the modulation subsystem or the processing device 900, as long as the memory 906 can be connected to the The processor 903 is sufficient.
  • a computer-readable storage medium on which instructions are stored, and when the instructions are executed, the method on the terminal device side in the above method embodiment is executed.
  • a computer program product containing instructions is provided, and when the instructions are executed, the method on the terminal device side in the foregoing method embodiment is executed.
  • the network device in the embodiment of the present application may include one or more radio frequency units, such as a remote radio unit (RRU) 1010 and one or more baseband units (BBU). ) (Also called digital unit, digital unit, DU) 1020.
  • the RRU 1010 may be called a transceiver module, corresponding to the transceiver module 510 in FIG. 7, optionally, the transceiver module may also be called a transceiver, a transceiver circuit, or a transceiver, etc., which may include at least one antenna 1011.
  • RF unit 1012 may include at least one antenna 1011.
  • the RRU 1010 part is mainly used for the transmission and reception of radio frequency signals and the conversion of radio frequency signals and baseband signals, for example, for sending instruction information to terminal devices.
  • the BBU 1010 part is mainly used for baseband processing and controlling the base station.
  • the RRU 1010 and the BBU 1020 may be physically arranged together, or may be physically separated, that is, distributed base stations.
  • the BBU 1020 is the control center of the base station, and may also be referred to as a processing module, which may correspond to the processing module 520 in FIG. 7 and is mainly used to complete baseband processing functions, such as channel coding, multiplexing, modulation, spread spectrum, and so on.
  • the BBU processing module
  • the BBU may be used to control the base station to perform the operation flow on the network device in the above method embodiment, for example, to generate the above instruction information.
  • the BBU 1020 may be composed of one or more boards, and the plurality of boards may jointly support a wireless access network of a single access standard (such as an LTE network), or may support wireless access of different access standards respectively. Access network (such as LTE network, 5G network or other networks).
  • the BBU 1020 also includes a memory 1021 and a processor 1022.
  • the memory 1021 is used to store necessary instructions and data.
  • the processor 1022 is used to control the base station to perform necessary actions, for example, to control the base station to perform the operation flow on the network device in the foregoing method embodiment.
  • the memory 1021 and the processor 1022 may serve one or more single boards. In other words, the memory and the processor can be set separately on each board. It is also possible that multiple boards share the same memory and processor. In addition, each board can also be provided with necessary circuits.
  • processors mentioned in the embodiments of the present application may be a central processing unit (CPU), and may also be other general-purpose processors, digital signal processors (DSPs), and special-purpose integrated circuits (DSPs) application, specific, integrated circuit (ASIC), ready-made programmable gate array (field programmable gate array, FPGA) or other programmable logic device, discrete gate or transistor logic device, discrete hardware component, etc.
  • the general-purpose processor may be a microprocessor or the processor may be any conventional processor or the like.
  • the memory mentioned in the embodiments of the present application 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 read-only memory (Read-Only Memory, ROM), programmable read-only memory (Programmable ROM, PROM), erasable programmable read-only memory (Erasable PROM, EPROM), electronically Erasable programmable read only memory (Electrically, EPROM, EEPROM) or flash memory.
  • the volatile memory may be a random access memory (Random Access Memory, RAM), which is used as an external cache.
  • RAM static random access memory
  • DRAM dynamic random access memory
  • DRAM synchronous dynamic random access memory
  • SDRAM double data rate synchronous dynamic random access memory
  • Double Data Rate SDRAM DDR SDRAM
  • enhanced SDRAM ESDRAM
  • Synchlink DRAM SLDRAM
  • Direct Rambus RAM Direct Rambus RAM
  • the processor is a general-purpose processor, DSP, ASIC, FPGA or other programmable logic device, discrete gate or transistor logic device, or discrete hardware component
  • the memory storage module
  • the disclosed system, device, and method may be implemented in other ways.
  • the device embodiments described above are only schematic.
  • the division of the units is only a division of logical functions.
  • there may be other divisions for example, multiple units or components may be combined or Can be integrated into another system, or some features can be ignored, or not implemented.
  • the displayed or discussed mutual coupling or direct coupling or communication connection may be indirect coupling or communication connection through some interfaces, devices or units, and may be in electrical, mechanical or other forms.
  • 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, they may be located in one place, or may be distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.
  • each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units may be integrated into one unit.
  • the functions are implemented in the form of software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium.
  • the technical solution of the present application essentially or part of the contribution to the existing technology 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, including Several instructions are used to enable 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 the embodiments of the present application.
  • 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 disk and other media that can store program code .

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

本申请公开了一种缓存管理的方法，包括：通信设备接收网络设备发送的调度信息和指示信息；通信设备根据调度信息，通过混合自动重传请求HARQ进程向网络设备发送上行数据；通信设备根据指示信息，清空HARQ进程所对应的HARQ缓存中的上行数据。本申请实施例中，终端设备在通过HARQ进程发送上行数据后，会根据网络设备的指示信息，及时清空该HARQ进程所对应的HARQ缓存中的上行数据，从而提高了缓存的利用率。

Description

一种缓存管理的方法及相应设备
本申请要求于2018年11月22日提交中国专利局、申请号为201811399307.8、发明名称为“一种缓存管理的方法及相应设备”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本申请涉及通信技术领域，具体涉及一种缓存管理的方法及相应设备。
背景技术
在新一代无线通信技术(new radio，NR)中，终端设备向网络设备发送上行数据需要根据网络设备调度确定混合自动重传请求(hybrid automation retransmission request，HARQ)新传和HARQ重传。在网络设备调度HARQ新传时会向终端设备通知在新传时所使用的HARQ进程，每个HARQ进程对应一个HARQ缓存(buffer),终端设备会将新传的上行数据存储在对应的HARQ buffer中，以便于在HARQ新传失败时进行HARQ重传。
HARQ重传需要根据网络设备调度，终端设备并不知道HARQ重传时刻，若网络设备不调度HARQ重传，则HARQ buffer中就会一直存储对应之前所发送的上行数据，长时间不清空HARQ buffer，会一直占用缓存资源，而HARQ buffer中的上行数据可能已经无效，已经没有重传的必要。
另一方面，随着NR中HARQ进程数量的进一步增加，如果每个HARQ进程都有缓存数据，那么HARQ buffer中的数据将占用较大的内存空间，降低终端设备性能。
发明内容
本申请实施例提供一种缓存管理的方法，可以及时清空HARQ buffer中的数据，从而提高了缓存的利用率。本申请实施例还提供了相应的设备。
本申请第一方面提供一种缓存管理的方法，包括：通信设备接收网络设备发送的调度信息和指示信息；该通信设备根据该调度信息，通过混合自动重传请求HARQ进程向该网络设备发送上行数据；该通信设备根据该指示信息，清空该HARQ进程所对应的HARQ缓存中的该上行数据。
该通信设备可以为终端设备，也可以为电路。该调度信息用于指示通信设备通过混合自动重传请求HARQ进程向该网络设备发送上行数据，该指示信息用于指示该通信设备在发送该上行数据后清空该HARQ进程所对应的HARQ缓存中的该上行数据。
由该第一方面可知，通信设备在通过HARQ进程发送上行数据后，会根据网络设备的指示信息，及时清空该HARQ进程所对应的HARQ缓存中的上行数据，从而提高了缓存的利用率。
结合第一方面，在第一方面的第一种可能的实现方式中，所述指示信息用于指示所述通信设备在至少两个频域资源或至少两个无线承载上发送所述上行数据后清空所述HARQ缓存中的所述上行数据；所述通信设备根据所述指示信息，清空所述HARQ进程所对应的HARQ缓存中的所述上行数据，包括：所述通信设备确定用于发送所述上行数据的频域资源或无线承载有至少两个；所述通信设备根据所述指示信息，在所述上行数据发送后，所述通信设备清空所述HARQ缓存中的所述上行数据。
由上述第一方面第一种可能的实现方式可知，可以通过频域资源的数量来表征指示信息，在有两个或两个以上的频域资源用于发送上行数据时，就可以及时清空HARQ缓存中的所述上行数据，在提高缓存利用率时，还实现了指示信息的多样性。
结合第一方面，在第一方面的第二种可能的实现方式中，所述指示信息用于指示所述通信设备在至少两个时域资源发送所述上行数据后清空所述HARQ缓存中的所述上行数据；所述通信设备根据所述指示信息，清空所述HARQ进程所对应的HARQ缓存中的所述上行数据，包括：所述通信设备确定用于发送所述上行数据的时域资源有至少两个；所述通信设备根据所述指示信息，在所述上行数据发送后，所述通信设备清空所述HARQ缓存中的所述上行数据。
由上述第一方面第二种可能的实现方式可知，可以通过时域资源的数量来表征指示信息，在有两个或两个以上的时域资源用于发送上行数据时，就可以及时清空HARQ缓存中的所述上行数据，在提高缓存利用率时，还实现了指示信息的多样性。
结合第一方面，在第一方面的第三种可能的实现方式中，所述指示信息用于指示当所述调度信息采用目标加扰方式加扰时，在发送所述上行数据后清空所述HARQ缓存中的所述上行数据；所述通信设备根据所述指示信息，清空所述HARQ进程所对应的HARQ缓存中的所述上行数据，包括：所述通信设备确定所述调度信息采用目标加扰方式加扰；所述通信设备根据所述指示信息，在发送所述上行数据后，所述通信设备清空所述HARQ缓存中的所述上行数据。
所述目标加扰方式可以包括调制与编码方式-小区无线网络临时标识(modulation and coding scheme cell radio network tempory identity，MCS-C-RNTI)、小区无线网络临时标识(cell radio network tempory identity，C-RNTI)或配置调度无线网络临时标识(configure scheduling radio network tempory identity，CS-RNTI)，也就是说目标加扰方式可以包括MCS-C-RNTI、C-RNTI和CS-RNTI中的一个。
由上述第一方面第三种可能的实现方式可知，可以通过对调度信息的目标加扰方式来表征指示信息，当调度信息是采用目标加扰方式加扰时，就清空所述HARQ缓存中的所述上行数据，在提高缓存利用率时，还实现了指示信息的多样性。
结合第一方面，在第一方面的第四种可能的实现方式中，所述指示信息用于指示所述通信设备在发送了包含目标逻辑信道的标识信息的所述上行数据后清空所述HARQ缓存中的所述上行数据；所述通信设备根据所述指示信息，清空所述HARQ进程所对应的HARQ缓存中的所述上行数据，包括：所述通信设备确定所述上行数据中包含目标逻辑信道的标识信息；所述通信设备根据所述指示信息，在发送所述上行数据后，所述通信设备清空所述HARQ缓存中的所述上行数据。其中，所述目标逻辑信道是指在上行数据发送后需要及时清空对应HARQ缓存的信道，例如可以是用于承载超可靠低时延业务URLLC的信道。
由上述第一方面第四种可能的实现方式可知，可以通过目标逻辑信道的标识信息来表征指示信息，当上行数据中包含有目标逻辑信道的标识信息时，就清空所述HARQ缓存中的所述上行数据，在提高缓存利用率时，还实现了指示信息的多样性。
结合第一方面，在第一方面的第五种可能的实现方式中，所述指示信息用于指示所述 通信设备在发送了包含目标协议数据单元会话PDU session的信息的上行数据后清空所述HARQ缓存中的所述上行数据，所述通信设备根据所述指示信息，清空所述HARQ进程所对应的HARQ缓存中的所述上行数据，包括：所述通信设备确定所述上行数据中包含目标PDU session的信息；所述通信设备根据所述指示信息，在发送所述上行数据后，所述通信设备清空所述HARQ缓存中的所述上行数据。其中，所述目标PDU session是指在上行数据发送后需要及时清空对应HARQ缓存的会话，例如可以是用于承载超可靠低时延业务URLLC的会话。
由上述第一方面第五种可能的实现方式可知，可以通过PDU session的信息来表征指示信息，当上行数据中包含有PDU session的信息时，就清空所述HARQ缓存中的所述上行数据，在提高缓存利用率时，还实现了指示信息的多样性。
结合第一方面，在第一方面的第六种可能的实现方式中，所述指示信息包括所述网络设备配置的定时器，所述指示信息用于指示在所述定时器期满后清空所述HARQ缓存中的所述上行数据；所述通信设备根据所述指示信息，清空所述HARQ进程所对应的HARQ缓存中的所述上行数据，包括：所述通信设备在发送上行数据后，启动或重启所述定时器并进行时间监控；所述通信设备根据所述指示信息，在所述定时器期满后清空所述HARQ缓存中的所述上行数据。所述定时器为新定义的定时器或者已有的定时器。
由上述第一方面第六种可能的实现方式可知，可以用定时器来表征指示信息，在上行数据发送后启动定时器，在定时器期满后，就清空所述HARQ缓存中的所述上行数据，在提高缓存利用率时，还实现了指示信息的多样性。
结合第一方面，在第一方面的第七种可能的实现方式中，所述指示信息包括定时器和预设时长，所述指示信息用于指示在所述定时器期满后，再等待所述预设时长后清空所述HARQ缓存中的所述上行数据；所述通信设备根据所述指示信息，清空所述HARQ进程所对应的HARQ缓存中的所述上行数据，包括：所述通信设备在发送上行数据后，启动或重启所述定时器并进行时间监控；根据所述指示信息，在所述定时器期满后，并且所述预设时长也到达后清空所述HARQ缓存中的所述上行数据。
由上述第一方面第七种可能的实现方式可知，可以用定时器加预设时长来表征指示信息，在上行数据发送后启动定时器，在定时器期满后，再等待预设时长，再清空所述HARQ缓存中的所述上行数据，在提高缓存利用率时，还实现了指示信息的多样性。
由上述第一方面第八种可能的实现方式可知，调度信息和指示信息可以携带在无线资源控制(radio resource control，RRC)专用信令、媒体接入控制单元(multi-medium access control element，MAC CE)或下行控制信息(downlink control indicator，DCI)中。
本申请第二方面提供一种缓存管理的方法，包括：网络设备确定调度信息和指示信息，所述调度信息用于指示通信设备通过混合自动重传请求HARQ进程向所述网络设备发送上行数据，所述指示信息用于指示所述通信设备在发送所述上行数据后清空所述HARQ进程所对应的HARQ缓存中的所述上行数据；所述网络设备向通信设备发送所述调度信息和所述指示信息。
该网络设备可以通过指示信息指示通信设备在通过HARQ进程发送上行数据后，及时清空该HARQ进程所对应的HARQ缓存中的上行数据，从而提高了缓存的利用率。
结合第二方面，在第一种可能的实现方式中，所述网络设备确定指示信息，包括：所述网络设备确定用于所述通信设备发送所述上行数据的频域资源的数量有至少两个，所述数量为所述指示信息，所述指示信息用于指示所述通信设备在至少两个频域资源或至少两个无线承载上发送所述上行数据后清空所述HARQ缓存中的所述上行数据。
由上述第二方面第一种可能的实现方式可知，可以通过频域资源的数量来表征指示信息，在有两个或两个以上的频域资源用于发送上行数据时，就可以及时清空HARQ缓存中的所述上行数据，在提高缓存利用率时，还实现了指示信息的多样性。
结合第二方面，在第二种可能的实现方式中，所述网络设备确定指示信息，包括：
所述网络设备确定用于所述通信设备发送所述上行数据的时域资源的数量有至少两个，所述数量为所述指示信息，所述指示信息用于指示所述通信设备在至少两个时域资源发送所述上行数据后清空所述HARQ缓存中的所述上行数据。
由上述第二方面第二种可能的实现方式可知，可以通过时域资源的数量来表征指示信息，在有两个或两个以上的时域资源用于发送上行数据时，就指示通信设备清空HARQ缓存中的所述上行数据，在提高通信设备缓存利用率时，还实现了指示信息的多样性。
结合第二方面，在第三种可能的实现方式中，所述网络设备确定指示信息，包括：所述网络设备确定调度信息的目标加扰方式为所述指示信息，所述指示信息用于指示当所述调度信息采用目标加扰方式加扰时，在发送所述上行数据后清空所述HARQ缓存中的所述上行数据。
由上述第二方面第三种可能的实现方式可知，可以通过对调度信息的目标加扰方式来表征指示信息，当调度信息是采用目标加扰方式加扰时，就指示通信设备清空所述HARQ缓存中的所述上行数据，在提高通信设备缓存利用率时，还实现了指示信息的多样性。
结合第二方面，在第四种可能的实现方式中，所述网络设备确定指示信息，包括：所述网络设备确定目标逻辑信道的标识信息为所述指示信息，所述指示信息用于指示所述通信设备在发送了包含目标逻辑信道的标识信息的所述上行数据后清空所述HARQ缓存中的所述上行数据，其中，所述目标逻辑信道是指在上行数据发送后需要及时清空对应HARQ缓存的信道，例如可以是用于承载超可靠低时延业务URLLC的信道。
由上述第二方面第四种可能的实现方式可知，可以通过目标逻辑信道的标识信息来表征指示信息，网络设备指示通信设备当上行数据中包含有目标逻辑信道的标识信息时，就清空所述HARQ缓存中的所述上行数据，在提高通信设备缓存利用率时，还实现了指示信息的多样性。
结合第二方面，在第五种可能的实现方式中，所述网络设备确定指示信息，包括：所述网络设备确定目标协议数据单元会话PDU session的信息为所述指示信息，所述指示信息用于指示所述通信设备在发送了包含目标协议数据单元会话PDU session的信息的所述上行数据后清空所述HARQ缓存中的所述上行数据，其中，所述目标PDU session是指在上行数据发送后需要及时清空对应HARQ缓存的会话，例如可以是用于承载超可靠低时延业务URLLC的会话。
由上述第二方面第五种可能的实现方式可知，可以PDU session的信息来表征指示信 息，网络设备指示通信设备当上行数据中包含有PDU session的信息时，就清空所述HARQ缓存中的所述上行数据，在提高通信设备缓存利用率时，还实现了指示信息的多样性。
结合第二方面，在第六种可能的实现方式中，所述网络设备确定指示信息，包括：所述网络设备将定时器确定为所述指示信息，所述指示信息用于指示所述通信设备在所述定时器期满后清空所述HARQ缓存中的所述上行数据。
由上述第二方面第六种可能的实现方式可知，可以用定时器来表征指示信息，网络设备指示通信设备在上行数据发送后启动定时器，在定时器期满后，就清空所述HARQ缓存中的所述上行数据，在提高缓存利用率时，还实现了指示信息的多样性。
结合第二方面，在第七种可能的实现方式中，所述网络设备确定指示信息，包括：所述网络设备将定时器和预置时长确定为所述指示信息，所述指示信息用于指示所述通信设备在所述定时器期满后，再等待所述预设时长后清空所述HARQ缓存中的所述上行数据。
由上述第二方面第七种可能的实现方式可知，可以用定时器加预设时长来表征指示信息，网络设备指示通信设备在上行数据发送后启动定时器，在定时器期满后，再等待预设时长，再清空所述HARQ缓存中的所述上行数据，在提高缓存利用率时，还实现了指示信息的多样性。
本申请第三方面提供一种通信设备，所述通信设备用于执行上述第一方面或第一方面的任一可能的实现方式中的缓存管理的方法。具体地，所述终端设备可以包括用于执行第一方面或第一方面的任一可能的实现方式中的缓存管理的方法的模块。
本申请第四方面提供一种通信设备，所述终端设备包括存储器和处理器，所述存储器用于存储指令，所述处理器用于执行所述存储器存储的指令，并且对所述存储器中存储的指令的执行使得所述处理器执行第一方面或第一方面的任一可能的实现方式中的方法。
本申请第五方面提供一种计算机可读存储介质，其上存储有计算机程序，所述程序被处理器执行时实现第一方面或第一方面的任一可能的实现方式中的方法。
本申请第六方面提供一种网络设备，所述网络设备用于执行上述第二方面或第二方面的任一可能的实现方式中的缓存管理的方法。具体地，所述网络设备可以包括用于执行第二方面或第二方面的任一可能的实现方式中的缓存管理的方法的模块。
本申请第七方面提供一种网络设备，所述网络设备包括存储器和处理器，所述存储器用于存储指令，所述处理器用于执行所述存储器存储的指令，并且对所述存储器中存储的指令的执行使得所述处理器执行第二方面或第二方面的任一可能的实现方式中的方法。
本申请第八方面提供一种计算机可读存储介质，其上存储有计算机程序，所述程序被处理器执行时实现第二方面或第二方面的任一可能的实现方式中的方法。
本申请实施例中，终端设备在通过HARQ进程发送上行数据后，会根据网络设备的指示信息，及时清空该HARQ进程所对应的HARQ缓存中的上行数据，从而提高了缓存的利用率。
附图说明
图1是本申请实施例中通信系统的一实施例示意图；
图2是本申请实施例中缓存管理的方法的一实施例示意图；
图3是双链路的一场景示例示意图；
图4是本申请实施例中缓存管理的方法的另一实施例示意图；
图5是本申请实施例中通信设备的一实施例示意图；
图6是本申请实施例中通信设备的另一实施例示意图；
图7是本申请实施例中网络设备的一实施例示意图；
图8是本申请实施例中网络设备的另一实施例示意图；
图9为本申请实施例提供的通信设备的示意性框图；
图10为本申请实施例提供的通信设备的另一示意图；
图11为本申请实施例提供的通信设备的再一示意图；
图12为本申请实施例提供的网络设备的另一示意图。
具体实施方式
下面结合附图，对本申请的实施例进行描述，显然，所描述的实施例仅仅是本申请一部分的实施例，而不是全部的实施例。本领域普通技术人员可知，随着技术的发展和新场景的出现，本申请实施例提供的技术方案对于类似的技术问题，同样适用。
本申请实施例提供一种缓存管理的方法，可以及时清空HARQ buffer中的数据，从而提高了缓存的利用率。本申请实施例还提供了相应的设备。以下分别进行详细说明。
应理解，本申请实施例的技术方案可以应用于长期演进(long term evolution，LTE)架构，还可以应用于通用移动通信系统(universal mobile telecommunications system，UMTS)陆地无线接入网(UMTS terrestrial radio access network，UTRAN)架构，或者全球移动通信系统(global system for mobile communication，GSM)/增强型数据速率GSM演进(enhanced data rate for GSM evolution，EDGE)系统的无线接入网(GSM EDGE radio access network，GERAN)架构。在UTRAN架构或/GERAN架构中，MME的功能由服务通用分组无线业务(general packet radio service，GPRS)支持节点(serving GPRS support，SGSN)完成，SGW\PGW的功能由网关GPRS支持节点(gateway GPRS support node，GGSN)完成。本申请实施例的技术方案还可以应用于其他通信系统，例如公共陆地移动网络(public land mobile network，PLMN)系统，以及5G通信系统或5G之后的通信系统等，本申请实施例对此不作限定。
本申请实施例涉及终端设备。终端设备可以为包含无线收发功能、且可以与网络设备配合为用户提供通讯服务的设备。具体地，终端设备可以指用户设备(user equipment，UE)、接入终端、用户单元、用户站、移动站、移动台、远方站、远程终端、移动设备、用户终端、终端、无线通信设备、用户代理或用户装置。例如，终端设备可以是蜂窝电话、无绳电话、会话启动协议(session initiation protocol，SIP)电话、无线本地环路(wireless local loop，WLL)站、个人数字处理(personal digital sssistant，PDA)、具有无线通信功能的手持设备、计算设备或连接到无线调制解调器的其它处理设备、车载设备、可穿戴设备，5G网络或5G之后的网络中的终端设备等，本申请实施例对此不作限定。
本申请实施例还涉及网络设备。网络设备可以是用于与终端设备进行通信的设备，例如，可以是GSM系统或CDMA中的基站(base transceiver station，BTS)，也可以是WCDMA 系统中的基站(NodeB，NB)，还可以是LTE系统中的演进型基站(evolutional node B，eNB或eNodeB)，或者该网络设备可以为中继站、接入点、车载设备、可穿戴设备以及未来5G网络或5G之后的网络中的网络侧设备或未来演进的PLMN网络中的网络设备等。
本申请实施例中涉及的网络设备也可称为无线接入网(radio access network，RAN)设备。RAN设备与终端设备连接，用于接收终端设备的数据并发送给核心网设备。RAN设备在不同通信系统中对应不同的设备，例如，在2G系统中对应基站与基站控制器，在3G系统中对应基站与无线网络控制器(radio network ontroller，RNC)，在4G系统中对应演进型基站(evolutional node B，eNB)，在5G系统中对应5G系统，如新无线接入系统(new radio access technology，NR)中的接入网设备(例如gNB，CU，DU)。
图1为本申请实施例中通信系统的一实施例示意图。
如图1所示，本申请实施例提供的通信系统的一实施例包括：
网络设备和通信设备，该通信设备可以是终端设备，后文的实施例中以通信设备是终端设备为例进行描述，除了终端设备，本申请实施例中的通信设备也可以是电路，不应将其理解为只是终端设备。
如图1所示，终端设备中每个HARQ进程对应有一个HARQ缓存，例如：HARQ进程1与HARQ缓存1对应，HARQ进程2与HARQ缓存2对应，HARQ进程N与HARQ缓存N对应，该N为大于2的整数。当然，HARQ进程与HARQ缓存的对应关系不限于图1中所示的HARQ进程1与HARQ缓存1对应，也可能是HARQ进程1与HARQ缓存2对应，但每个HARQ进程1都会对应一个HARQ缓存，也就是说HARQ进程与HARQ缓存一一对应。
终端设备发送上行数据需要根据网络设备的调度进行，终端设备在发送上行数据时会在所使用的HARQ进程对应的HARQ缓存中缓存所发送的上行数据。因为缓存资源有限，为了提高缓存的利用率，本申请实施例提供了一种缓存管理的方法。
如图2所示，本申请实施例提供的缓存管理的方法的一实施例可以包括：
101、网络设备确定调度信息和指示信息。
网络设备调度终端设备发送上行数据时，会确定调度信息和指示信息，该调度信息用于指示终端设备通过混合自动重传请求HARQ进程向所述网络设备发送上行数据，该指示信息用于指示所述终端设备在发送所述上行数据后清空所述HARQ进程所对应的HARQ缓存中的所述上行数据。
102、网络设备向终端设备发送调度信息和指示信息。
调度信息中包括发送上行数据所使用的资源，例如：时域资源或者频域资源，HARQ进程的信息，例如：HARQ进程的编号或HARQ进程的名称等，当然调度信息中还可以包括其他信息，例如：发送时刻等。
调度信息和指示信息可以携带在无线资源控制(radio resource control，RRC)专用信令、媒体接入控制单元(multi-medium access control element，MAC CE)或下行控制信息(downlink control indicator，DCI)中向终端设备发送。
103、终端设备接收网络设备发送的调度信息和指示信息后，根据调度信息，通过混合自动重传请求HARQ进程向所述网络设备发送上行数据。
终端设备根据调度信息使用网络设备所指示的HARQ进程发送上行数据后，会将该上行数据缓存在该HARQ进程对应的HARQ缓存中，例如：网络设备在调度信息中指示用HARQ进程1发送上行数据，则终端设备在使用HARQ进程1发送上行数据时会在HARQ缓存1中缓存该上行数据。
104、终端设备根据指示信息，清空所述HARQ进程所对应的HARQ缓存中的所述上行数据。
在上行数据发送后，终端设备会根据网络设备发送的指示信息清空所述HARQ进程所对应的HARQ缓存中的所述上行数据，也就是，终端设备会根据指示信息清空HARQ缓存1中缓存的上行数据。
由上述图1和图2对应的实现方案可知，终端设备在通过HARQ进程发送上行数据后，会根据网络设备的指示信息，及时清空该HARQ进程所对应的HARQ缓存中的上行数据，从而提高了缓存的利用率。
在某类业务场景中，如:超可靠低时延业务(ultra-reliability low latency communication，URLLC)，在这类业务场景中，新传成功率极高，传输时延要求极高，所以长时间缓存这类业务场景的上行数据没有太大的意义，所以，在这类业务场景中可以在终端设备发送上行数据后，清空HARQ缓存中的该上行数据。这类场景下如果不及时清空HARQ缓存，有可能会导致HARQ缓存失效的数据再次被传输，造成数据传输异常。所以本申请提高的缓存管理的方法，可以在上行数据发送后，及时清空HARQ缓存中的该上行数据，在提高缓存利用率的同事，还保证了数据传输的有效性和新鲜性。
在双链路业务场景中，如：NR duplication，如图3所示，每次终端设备向网络设备发送上行数据，会占用链路1和链路2发送相同的数据，即使链路1出现了延迟传输的问题，导致网络设备不能接收到终端设备发送的上行数据，但通过链路2传输的上行数据会及时传输到网络设备，也可以保证网络设备及时接收到终端设备发送的上行数据，所以，在双链路场景中，也没有长时间缓存该上行数据的必要。在双链路场景下，如果不及时情况HARQ缓存中的数据，再次调度时，有可能会调度到HARQ缓存中失效的数据，造成数据传输异常。所以本申请提高的缓存管理的方法，可以在上行数据发送后，及时清空HARQ缓存中的该上行数据，在提高缓存利用率的同事，还保证了数据传输的有效性和新鲜性。
在上述多个没有长时间缓存上行数据的必要性的场景中，就可以在发送上行数据后，清空HARQ缓存中的上行数据。业务所处的场景是由网络设备确定的，所以网络设备可以在调度上行数据时，发送指示信息，以指示终端设备在发送上行数据后，清空HARQ缓存中的上行数据。清空HARQ缓存中的上行数据可以是发送上行数据后，根据指示信息立即清空，也可以是延迟一会再清空。
本申请实施例中指示信息的表现形式可以有多种，可以是以隐式的方式做指示，也可以是以显示的方式做指示。
例如：通过频域资源的数量或者时域资源的数量来表征该指示信息，该数量可以是通过直接的数量指示，例如：2、3、4个或其数值这种显示的方式的数量来表征该指示信息，也可以是通过资源1、资源2、资源3这种隐式的数量来表征该指示信息。当然，这里隐式表 示的3个资源只是举例说明，并不应将其理解为是对资源数量的限定。无论是频域资源还是时域资源，只有是两个或两个以上都用来指示在终端设备发送上行数据后清空所述HARQ缓存中的上行数据。
网络设备在确定指示信息时，会确定用于所述终端设备发送所述上行数据的频域资源的数量有至少两个，所述数量为所述指示信息，所述指示信息用于指示终端设备在至少两个时域资源发送所述上行数据后清空所述HARQ缓存中的所述上行数据。
所述终端设备根据所述指示信息，确定用于发送所述上行数据的频域资源或无线承载有至少两个；在所述上行数据发送后，所述终端设备清空所述HARQ缓存中的所述上行数据。
频域资源可以是成员载波CC和/或部分带宽(bandwidth part，BWP)。
同样，对于时域资源也适用。
网络设备在确定指示信息时，会确定用于所述终端设备发送所述上行数据的时域资源的数量有至少两个，所述数量为所述指示信息，所述指示信息用于指示终端设备在至少两个时域资源发送所述上行数据后清空所述HARQ缓存中的所述上行数据。
所述终端设备根据所述指示信息，确定用于发送所述上行数据的时域资源有至少两个；在所述上行数据发送后，所述终端设备清空所述HARQ缓存中的所述上行数据。
时域资源包括至少如下之一：子帧、时隙和符号。
该至少两个时域资源可以是连续的，也可以不是连续的。发送上行数据时，可以是在至少两个时域资源上重复发送上行数据，也可以只发送一次。
以上描述的是以频域资源或时域资源的数量来表征该指示信息。本申请实施例中还可以通过调度信息的目标加扰方式、目标逻辑信道的标识信息、目标协议数据单元会话PDU session的信息或者定时器或定时器加预设时长等信息来表征该指示信息，下面分别进行介绍。
1、采用目标加扰方式来表征指示信息：
网络设备确定调度信息的目标加扰方式为所述指示信息，所述指示信息用于指示当所述调度信息采用目标加扰方式加扰时，在发送所述上行数据后清空所述HARQ缓存中的所述上行数据。
所述终端设备根据所述指示信息，确定所述调度信息采用目标加扰方式加扰，根据所述指示信息，在发送所述上行数据后，所述终端设备清空所述HARQ缓存中的所述上行数据。
所述目标加扰方式包括调制与编码方式-小区无线网络临时标识(modulation and coding scheme cell radio network tempory identity，MCS-C-RNTI)、小区无线网络临时标识(cell radio network tempory identity，C-RNTI)和配置调度无线网络临时标识(configure scheduling radio network tempory identity，CS-RNTI)中的一个。
2、采用目标逻辑信道的标识信息来表征指示信息：
所述网络设备确定目标逻辑信道的标识信息为所述指示信息，所述指示信息用于指示所述终端设备在发送了包含目标逻辑信道的标识信息的所述上行数据后清空所述HARQ缓存中的所述上行数据，所述目标逻辑信道用于承载超可靠低时延业务URLLC。
所述终端设备确定所述上行数据中包含目标逻辑信道的标识信息,根据所述指示信 息，在发送所述上行数据后，所述终端设备清空所述HARQ缓存中的所述上行数据。
3、采用目标协议数据单元会话PDU session的信息来表征指示信息：
所述网络设备确定目标协议数据单元会话PDU session的信息为所述指示信息，所述指示信息用于指示所述终端设备在发送了包含目标协议数据单元会话PDU session的信息的上行数据后清空所述HARQ缓存中的所述上行数据，所述目标PDU session用于承载超可靠低时延业务URLLC。
所述终端设备确定所述上行数据中包含目标PDU session的信息,根据所述指示信息，在发送所述上行数据后，所述终端设备清空所述HARQ缓存中的所述上行数据。
4、采用定时器来表征指示信息：
所述网络设备将定时器确定为所述指示信息，所述指示信息用于指示所述终端设备在所述定时器期满后清空所述HARQ缓存中的所述上行数据。
所述终端设备在发送上行数据后，启动或重启所述定时器并进行时间监控；所述通信设备根据所述指示信息，在所述定时器期满后清空所述HARQ缓存中的所述上行数据。
5、采用定时器+预设时长来表征指示信息：
所述网络设备将定时器和预置时长确定为所述指示信息，所述指示信息用于指示所述终端设备在所述定时器期满后，再等待所述预设时长后清空所述HARQ缓存中的所述上行数据。
所述终端设备在发送上行数据后，启动或重启所述定时器并进行时间监控，通信设备根据所述指示信息，在所述定时器期满后，并且所述预设时长也到达后清空所述HARQ缓存中的所述上行数据。
所述定时器为新定义的定时器或者已有的定时器。新定义的定时器即表示之前没有，网络设备新配置的，网络设备会配置该定时器的名称和定时时长等信息。已有的定时器表示之前已经完成配置，网络设备和终端设备侧都已经知道该定时器的名称和定时时长等信息，网络设备只需要把该定时器的名称或者编号信息通知给终端设备即可。
实际上，不配置定时器，直接通过预设时长也可以表征该指示信息，这种情况时：
所述网络设备将预置时长确定为所述指示信息，所述指示信息用于指示所述终端设备在所述发送所述上行数据后，等待所述预设时长后清空所述HARQ缓存中的所述上行数据。
所述终端设备进行时间监控，在发送上行数据后，开始进行时间监控，在所述预设时长到达后清空所述HARQ缓存中的所述上行数据。
关于定时器和/或预设时长的方案可以参参阅图4进行理解。
如图4所示，本申请实施例提供的缓存管理的方法的另一实施例可以包括：
201、网络设备确定调度信息，并为调度信息配置时间信息。
该时间信息包括定时器和/或预设时长。
定时器和/或预设时长包括定时器或预设时长，以及定时器和预设时长三种情况。
202、网络设备向终端设备发送调度信息和时间信息。
203、终端设备接收调度信息和时间信息后，根据调度信息，通过混合自动重传请求HARQ进程向所述网络设备发送上行数据。
终端设备发送上行数据时，该上行时间同时缓存到该HARQ进程对应的HARQ缓存中。
204、终端设备在发送上行数据后，进行时间监控。
若有定时器，则需要在发送上行数据后启动该定时器，定时器的启动时刻可以理解为一发送了上行数据，就立即启动该定时器。
205、在时间到达时，清空所述HARQ进程所对应的HARQ缓存中的所述上行数据。
本申请实施例中，终端设备在通过HARQ进程发送上行数据后，会根据网络设备的指示信息，在定时器和/或预设时长的时间到达后清空该HARQ进程所对应的HARQ缓存中的上行数据，从而提高了缓存的利用率。
另外，在双链路的场景中，如果链路1出现了延迟传输，链路2正常传输，网络设备会指示丢弃链路1的上行数据，但HARQ buffer并未清空该上行数据，如果再次调度链路1的上数据，有可能会导致网络设备侧对上行数据接收时的序列号乱序，本申请实施例提供的方案，会及时清空HARQ buffer中的数据，可以减少HARQ buffer中数据的滞留时间，减少内存消耗，而且还避免HARQ buffer中的数据长期未调度再次调度时导致的序列号乱序的问题。
上文描述了本申请实施例提供的缓存管理的方法，下文将描述本申请实施例提供的通信设备与网络设备。
图5为本申请实施例提供的通信设备30的示意图，通信设备30包括：
收发模块310，用于接收网络设备发送的调度信息和指示信息，并根据所述调度信息，通过混合自动重传请求HARQ进程向所述网络设备发送上行数据；
处理模块320，用于根据所述收发模块310接收的所述指示信息，清空所述HARQ进程所对应的HARQ缓存中的所述上行数据。
本申请实施例中，通信设备在通过HARQ进程发送上行数据后，会根据网络设备的指示信息，及时清空该HARQ进程所对应的HARQ缓存中的上行数据，从而提高了缓存的利用率。
可选地，作为一个实施例，该处理模块320，用于在所述指示信息用于指示所述通信设备在至少两个频域资源或至少两个无线承载上发送所述上行数据后清空所述HARQ缓存中的所述上行数据时，根据所述指示信息，确定用于发送所述上行数据的频域资源或无线承载有至少两个，在所述上行数据发送后，清空所述HARQ缓存中的所述上行数据。
可选地，作为一个实施例，该处理模块320，用于在所述指示信息用于指示所述通信设备在至少两个时域资源发送所述上行数据后清空所述HARQ缓存中的所述上行数据时，确定用于发送所述上行数据的时域资源有至少两个，根据所述指示信息，在所述上行数据发送后，清空所述HARQ缓存中的所述上行数据。
可选地，作为一个实施例，该处理模块320，用于在所述指示信息用于指示所述通信设备在发送了包含目标逻辑信道的标识信息的所述上行数据后清空所述HARQ缓存中的所述上行数据时，确定所述上行数据中包含目标逻辑信道的标识信息，根据所述指示信息，在发送所述上行数据后，清空所述HARQ缓存中的所述上行数据。
可选地，作为一个实施例，该处理模块320，用于在所述指示信息用于指示所述通信设备在发送了包含目标协议数据单元会话PDU session的信息的上行数据后清空所述HARQ 缓存中的所述上行数据时，确定所述上行数据中包含目标PDU session的信息，根据所述指示信息，在发送所述上行数据后，清空所述HARQ缓存中的所述上行数据。
可选地，作为一个实施例，该处理模块320，用于在所述指示信息包括所述网络设备配置的定时器，所述指示信息用于指示在所述定时器期满后清空所述HARQ缓存中的所述上行数据时，根据所述指示信息，在发送上行数据后，启动或重启所述定时器并进行时间监控，在所述定时器期满后清空所述HARQ缓存中的所述上行数据。
可选地，作为一个实施例，该处理模块320，用于在所述指示信息包括定时器和预设时长，所述指示信息用于指示在所述定时器期满后，再等待所述预设时长后清空所述HARQ缓存中的所述上行数据时，根据所述指示信息，在发送上行数据后，启动或重启所述定时器并进行时间监控，在所述定时器期满后，并且所述预设时长也到达后清空所述HARQ缓存中的所述上行数据。
应理解，本申请实施例中的处理模块320可以由处理器或处理器相关电路组件实现，收发模块310可以由收发器或收发器相关电路组件实现。
如图6所示，本申请实施例还提供一种通信设备40，该通信设备40包括处理器410，存储器420与收发器430，其中，存储器420中存储指令或程序，处理器410用于执行存储器420中存储的指令或程序。存储器420中存储的指令或程序被执行时，该处理器410用于执行上述实施例中处理模块320执行的操作，收发器430用于执行上述实施例中收发模块310执行的操作。
应理解，根据本申请实施例的通信设备30或通信设备40可对应于本申请实施例的缓存管理的方法中的终端设备，并且通信设备30或通信设备40中的各个模块的操作和/或功能分别为了实现图2至图4中的各个方法的相应流程，为了简洁，在此不再赘述。
图7为本申请实施例提供的网络设备50的示意图，该网络设备50包括：
处理模块510，用于确定调度信息和指示信息，所述调度信息用于指示通信设备通过混合自动重传请求HARQ进程向所述网络设备发送上行数据，所述指示信息用于指示所述通信设备在发送所述上行数据后清空所述HARQ进程所对应的HARQ缓存中的所述上行数据；
收发模块520，用于向通信设备发送所述处理模块510确定的所述调度信息和所述指示信息。
本申请实施例中，网络设备可以通过指示信息指示通信设备在通过HARQ进程发送上行数据后，及时清空该HARQ进程所对应的HARQ缓存中的上行数据，从而提高了缓存的利用率。
可选地，作为一个实施例，该处理模块510，用于确定用于所述终端设备发送所述上行数据的频域资源的数量有至少两个，所述数量为所述指示信息，所述指示信息用于指示终端设备在至少两个频域资源或至少两个无线承载发送所述上行数据后清空所述HARQ缓存中的所述上行数据。
可选地，作为一个实施例，该处理模块510，用于确定用于所述终端设备发送所述上行数据的时域资源的数量有至少两个，所述数量为所述指示信息，所述指示信息用于指示终端设备在至少两个时域资源发送所述上行数据后清空所述HARQ缓存中的所述上行数据。
可选地，作为一个实施例，该处理模块510，用于确定调度信息的目标加扰方式为所 述指示信息，所述指示信息用于指示当所述调度信息采用目标加扰方式加扰时，在发送所述上行数据后清空所述HARQ缓存中的所述上行数据。
可选地，作为一个实施例，该处理模块510，用于确定目标逻辑信道的标识信息为所述指示信息，所述指示信息用于指示所述终端设备在发送了包含目标逻辑信道的标识信息的所述上行数据后清空所述HARQ缓存中的所述上行数据。
可选地，作为一个实施例，该处理模块510，用于确定目标协议数据单元会话PDU session的信息为所述指示信息，所述指示信息用于指示所述终端设备在发送了包含目标协议数据单元会话PDU session的信息的上行数据后清空所述HARQ缓存中的所述上行数据。
可选地，作为一个实施例，该处理模块510，用于将定时器确定为所述指示信息，所述指示信息用于指示所述终端设备在所述定时器期满后清空所述HARQ缓存中的所述上行数据。
可选地，作为一个实施例，该处理模块510，用于将定时器和预置时长确定为所述指示信息，所述指示信息用于指示所述终端设备在所述定时器期满后，再等待所述预设时长后清空所述HARQ缓存中的所述上行数据。
应理解，本申请实施例中的处理模块510可以由处理器或处理器相关电路组件实现，收发模块520可以由收发器或收发器相关电路组件实现。
如图8所示，本申请实施例还提供一种网络设备60，该网络设备60包括处理器610，存储器620与收发器630，其中，存储器620中存储指令或程序，处理器610用于执行存储器620中存储的指令或程序。存储器620中存储的指令或程序被执行时，该处理器610用于执行上述实施例中处理模块510执行的操作，收发器630用于执行上述实施例中收发模块520执行的操作。
应理解，根据本申请实施例的网络设备50或网络设备60可对应于本申请实施例的缓存管理的方法中的网络设备，并且网络设备50或网络设备60中的各个模块的操作和/或功能分别为了实现图2至图4中的各个方法的相应流程，为了简洁，在此不再赘述。
本申请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，该程序被处理器执行时可以实现上述方法实施例提供的缓存管理的方法中与终端设备相关的流程。
本申请实施例还提供计算机可读存储介质，其上存储有计算机程序，该程序被处理器执行时可以实现上述方法实施例提供的缓存管理的方法中与网络设备相关的流程。
本申请实施例还提供一种通信设备，该通信设备可以是终端设备也可以是电路。该通信设备可以用于执行上述方法实施例中由终端设备所执行的动作。
当该通信设备为终端设备时，图9示出了一种简化的终端设备的结构示意图。便于理解和图示方便，图9中，终端设备以手机作为例子。如图9所示，终端设备包括处理器、存储器、射频电路、天线以及输入输出装置。处理器主要用于对通信协议以及通信数据进行处理，以及对终端设备进行控制，执行软件程序，处理软件程序的数据等。存储器主要用于存储软件程序和数据。射频电路主要用于基带信号与射频信号的转换以及对射频信号的处理。天线主要用于收发电磁波形式的射频信号。输入输出装置，例如触摸屏、显示屏， 键盘等主要用于接收用户输入的数据以及对用户输出数据。需要说明的是，有些种类的终端设备可以不具有输入输出装置。
当需要发送数据时，处理器对待发送的数据进行基带处理后，输出基带信号至射频电路，射频电路将基带信号进行射频处理后将射频信号通过天线以电磁波的形式向外发送。当有数据发送到终端设备时，射频电路通过天线接收到射频信号，将射频信号转换为基带信号，并将基带信号输出至处理器，处理器将基带信号转换为数据并对该数据进行处理。为便于说明，图9中仅示出了一个存储器和处理器。在实际的终端设备产品中，可以存在一个或多个处理器和一个或多个存储器。存储器也可以称为存储介质或者存储设备等。存储器可以是独立于处理器设置，也可以是与处理器集成在一起，本申请实施例对此不做限制。
在本申请实施例中，可以将具有收发功能的天线和射频电路视为终端设备的收发单元，将具有处理功能的处理器视为终端设备的处理单元。如图9所示，终端设备包括收发单元710和处理单元720。收发单元也可以称为收发器、收发机、收发装置等。处理单元也可以称为处理器，处理单板，处理模块、处理装置等。可选的，可以将收发单元710中用于实现接收功能的器件视为接收单元，将收发单元710中用于实现发送功能的器件视为发送单元，即收发单元710包括接收单元和发送单元。收发单元有时也可以称为收发机、收发器、或收发电路等。接收单元有时也可以称为接收机、接收器、或接收电路等。发送单元有时也可以称为发射机、发射器或者发射电路等。
应理解，收发单元710用于执行上述方法实施例中终端设备侧的发送操作和接收操作，处理单元720用于执行上述方法实施例中终端设备上除了收发操作之外的其他操作。
例如，在一种实现方式中，收发单元710用于执行图2中的步骤102和103中终端设备侧的接收或发送操作，和/或收发单元710还用于执行本申请实施例中终端设备侧的其他收发步骤。处理单元720，用于执行图2中的步骤104，和/或处理单元720还用于执行本申请实施例中终端设备侧的其他处理步骤。
再例如，在另一种实现方式中，收发单元710用于执行图4中步骤202中终端设备侧的接收操作或步骤203中终端设备侧的发送操作，和/或收发单元720还用于执行本申请实施例中终端设备侧的其他收发步骤。处理单元720用于执行图4中的步骤204，和/或处理单元720还用于执行本申请实施例中终端设备侧的其他处理步骤。
当该通信设备为芯片时，该芯片包括收发单元和处理单元。其中，收发单元可以是输入输出电路、通信接口；处理单元为该芯片上集成的处理器或者微处理器或者集成电路。
本实施例中的通信设备为终端设备时，可以参照图10所示的设备。作为一个例子，该设备可以完成类似于图6中处理器410的功能。在图10中，该设备包括处理器810，发送数据处理器820，接收数据处理器830。上述实施例中的处理模块320可以是图10中的该处理器810，并完成相应的功能。上述实施例中的收发模块310可以是图10中的发送数据处理器820，和/或接收数据处理器830。虽然图10中示出了信道编码器、信道解码器，但是可以理解这些模块并不对本实施例构成限制性说明，仅是示意性的。
图11示出本实施例的另一种形式。处理装置900中包括调制子系统、中央处理子系统、周边子系统等模块。本实施例中的通信设备可以作为其中的调制子系统。具体的，该调制 子系统可以包括处理器903，接口904。其中处理器903完成上述处理模块320的功能，接口904完成上述收发模块310的功能。作为另一种变形，该调制子系统包括存储器906、处理器903及存储在存储器906上并可在处理器上运行的程序，该处理器903执行该程序时实现上述方法实施例中终端设备侧的方法。需要注意的是，所述存储器906可以是非易失性的，也可以是易失性的，其位置可以位于调制子系统内部，也可以位于处理装置900中，只要该存储器906可以连接到所述处理器903即可。
作为本实施例的另一种形式，提供一种计算机可读存储介质，其上存储有指令，该指令被执行时执行上述方法实施例中终端设备侧的方法。
作为本实施例的另一种形式，提供一种包含指令的计算机程序产品，该指令被执行时执行上述方法实施例中终端设备侧的方法。
本申请实施例中的网络设备可以如图12所示网络设备1000包括一个或多个射频单元，如远端射频单元(remote radio unit,RRU)1010和一个或多个基带单元(baseband unit，BBU)(也可称为数字单元，digital unit，DU)1020。所述RRU 1010可以称为收发模块，与图7中的收发模块510对应，可选地，该收发模块还可以称为收发机、收发电路、或者收发器等等，其可以包括至少一个天线1011和射频单元1012。所述RRU 1010部分主要用于射频信号的收发以及射频信号与基带信号的转换，例如用于向终端设备发送指示信息。所述BBU 1010部分主要用于进行基带处理，对基站进行控制等。所述RRU 1010与BBU 1020可以是物理上设置在一起，也可以物理上分离设置的，即分布式基站。
所述BBU 1020为基站的控制中心，也可以称为处理模块，可以与图7中的处理模块520对应，主要用于完成基带处理功能，如信道编码，复用，调制，扩频等等。例如所述BBU(处理模块)可以用于控制基站执行上述方法实施例中关于网络设备的操作流程，例如，生成上述指示信息等。
在一个示例中，所述BBU1020可以由一个或多个单板构成，多个单板可以共同支持单一接入制式的无线接入网(如LTE网)，也可以分别支持不同接入制式的无线接入网(如LTE网，5G网或其他网)。所述BBU1020还包括存储器1021和处理器1022。所述存储器1021用以存储必要的指令和数据。所述处理器1022用于控制基站进行必要的动作，例如用于控制基站执行上述方法实施例中关于网络设备的操作流程。所述存储器1021和处理器1022可以服务于一个或多个单板。也就是说，可以每个单板上单独设置存储器和处理器。也可以是多个单板共用相同的存储器和处理器。此外每个单板上还可以设置有必要的电路。
应理解，本申请实施例中提及的处理器可以是中央处理单元(central processing unit，CPU)，还可以是其他通用处理器、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、分立硬件组件等。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。
还应理解，本申请实施例中提及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)。
需要说明的是，当处理器为通用处理器、DSP、ASIC、FPGA或者其他可编程逻辑器件、分立门或者晶体管逻辑器件、分立硬件组件时，存储器(存储模块)集成在处理器中。
应注意，本文描述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。
应理解，本文中术语“和/或”，仅仅是一种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。另外，本文中字符“/”，一般表示前后关联对象是一种“或”的关系。
应理解，在本申请的各种实施例中，上述各过程的序号的大小并不意味着执行顺序的先后，各过程的执行顺序应以其功能和内在逻辑确定，而不应对本申请实施例的实施过程构成任何限定。
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。
以上对本发明实施例所提供的缓存管理的方法、通信设备、网络设备以及通信系统进行了详细介绍，本文中应用了具体个例对本发明的原理及实施方式进行了阐述，以上实施例的说明只是用于帮助理解本发明的方法及其核心思想；同时，对于本领域的一般技术人员，依据本发明的思想，在具体实施方式及应用范围上均会有改变之处，综上所述，本说明书内容不应理解为对本发明的限制。

Claims (30)

  1. 一种缓存管理的方法，其特征在于，包括：
    通信设备接收网络设备发送的调度信息和指示信息；
    所述通信设备根据所述调度信息，通过混合自动重传请求HARQ进程向所述网络设备发送上行数据；
    所述通信设备根据所述指示信息，清空所述HARQ进程所对应的HARQ缓存中的所述上行数据。
  2. 根据权利要求1所述的方法，其特征在于，所述指示信息用于指示所述通信设备在至少两个频域资源或至少两个无线承载上发送所述上行数据后清空所述HARQ缓存中的所述上行数据；
    所述通信设备根据所述指示信息，清空所述HARQ进程所对应的HARQ缓存中的所述上行数据，包括：
    所述通信设备确定用于发送所述上行数据的频域资源或无线承载有至少两个；
    所述通信设备根据所述指示信息，在所述上行数据发送后，清空所述HARQ缓存中的所述上行数据。
  3. 根据权利要求1所述的方法，其特征在于，所述指示信息用于指示所述通信设备在至少两个时域资源发送所述上行数据后清空所述HARQ缓存中的所述上行数据；
    所述通信设备根据所述指示信息，清空所述HARQ进程所对应的HARQ缓存中的所述上行数据，包括：
    所述通信设备确定用于发送所述上行数据的时域资源有至少两个；
    所述通信设备根据所述指示信息，在所述上行数据发送后，清空所述HARQ缓存中的所述上行数据。
  4. 根据权利要求1所述的方法，其特征在于，所述指示信息用于指示当所述调度信息采用目标加扰方式加扰时，在发送所述上行数据后清空所述HARQ缓存中的所述上行数据；
    所述通信设备根据所述指示信息，清空所述HARQ进程所对应的HARQ缓存中的所述上行数据，包括：
    所述通信设备确定所述调度信息采用目标加扰方式加扰；
    所述通信设备根据所述指示信息，在发送所述上行数据后，清空所述HARQ缓存中的所述上行数据。
  5. 根据权利要求4所述的方法，其特征在于，所述目标加扰方式包括调制与编码方式-小区无线网络临时标识MCS-C-RNTI、小区无线网络临时标识C-RNTI和配置调度无线网络临时标识CS-RNTI中的一个。
  6. 根据权利要求1所述的方法，其特征在于，所述指示信息用于指示所述通信设备在发送了包含目标逻辑信道的标识信息的所述上行数据后清空所述HARQ缓存中的所述上行数据；
    所述通信设备根据所述指示信息，清空所述HARQ进程所对应的HARQ缓存中的所述上行数据，包括：
    所述通信设备确定所述上行数据中包含目标逻辑信道的标识信息；
    所述通信设备根据所述指示信息，在发送所述上行数据后，清空所述HARQ缓存中的所述上行数据。
  7. 根据权利要求1所述的方法，其特征在于，所述指示信息用于指示所述通信设备在发送了包含目标协议数据单元会话PDU session的信息的上行数据后清空所述HARQ缓存中的所述上行数据；
    所述通信设备根据所述指示信息，清空所述HARQ进程所对应的HARQ缓存中的所述上行数据，包括：
    所述通信设备确定所述上行数据中包含目标PDU session的信息；
    所述通信设备根据所述指示信息，在发送所述上行数据后，清空所述HARQ缓存中的所述上行数据。
  8. 根据权利要求1所述的方法，其特征在于，所述指示信息包括所述网络设备配置的定时器，所述指示信息用于指示在所述定时器期满后清空所述HARQ缓存中的所述上行数据；
    所述通信设备根据所述指示信息，清空所述HARQ进程所对应的HARQ缓存中的所述上行数据，包括：
    所述通信设备根据所述指示信息，在发送上行数据后，启动或重启所述定时器并进行时间监控；
    所述通信设备在所述定时器期满后清空所述HARQ缓存中的所述上行数据。
  9. 根据权利要求8所述的方法，其特征在于，所述定时器为新定义的定时器或者已有的定时器。
  10. 根据权利要求1所述的方法，其特征在于，所述指示信息包括定时器和预设时长，所述指示信息用于指示在所述定时器期满后，再等待所述预设时长后清空所述HARQ缓存中的所述上行数据；
    所述通信设备根据所述指示信息，清空所述HARQ进程所对应的HARQ缓存中的所述上行数据，包括：
    所述通信设备根据所述指示信息，在发送上行数据后，启动或重启所述定时器并进行时间监控；
    所述通信设备在所述定时器期满后，并且所述预设时长也到达后清空所述HARQ缓存中的所述上行数据。
  11. 根据权利要求1-10任一所述的方法，其特征在于，所述指示信息携带在无线资源控制RRC专用信令、媒体接入控制单元MAC CE或下行控制信息DCI中。
  12. 一种缓存管理的方法，其特征在于，包括：
    网络设备确定调度信息和指示信息，所述调度信息用于指示通信设备通过混合自动重传请求HARQ进程向所述网络设备发送上行数据，所述指示信息用于指示所述通信设备在发送所述上行数据后清空所述HARQ进程所对应的HARQ缓存中的所述上行数据；
    所述网络设备向通信设备发送所述调度信息和所述指示信息。
  13. 根据权利要求12所述的方法，其特征在于，所述网络设备确定指示信息，包括：
    所述网络设备确定用于所述通信设备发送所述上行数据的频域资源或无线承载的数量有至少两个，所述数量为所述指示信息，所述指示信息用于指示所述通信设备在至少两个频域资源或至少两个无线承载上发送所述上行数据后清空所述HARQ缓存中的所述上行数据。
  14. 根据权利要求12所述的方法，其特征在于，所述网络设备确定指示信息，包括：
    所述网络设备确定用于所述通信设备发送所述上行数据的时域资源的数量有至少两个，所述数量为所述指示信息，所述指示信息用于指示所述通信设备在至少两个时域资源发送所述上行数据后清空所述HARQ缓存中的所述上行数据。
  15. 根据权利要求12所述的方法，其特征在于，所述网络设备确定指示信息，包括：
    所述网络设备确定目标逻辑信道的标识信息为所述指示信息，所述指示信息用于指示所述通信设备在发送了包含目标逻辑信道的标识信息的所述上行数据后清空所述HARQ缓存中的所述上行数据。
  16. 根据权利要求12所述的方法，其特征在于，所述网络设备确定指示信息，包括：
    所述网络设备将定时器确定为所述指示信息，所述指示信息用于指示所述通信设备在所述定时器期满后清空所述HARQ缓存中的所述上行数据。
  17. 根据权利要求12所述的方法，其特征在于，所述网络设备确定指示信息，包括：
    所述网络设备将定时器和预置时长确定为所述指示信息，所述指示信息用于指示所述通信设备在所述定时器期满后，再等待所述预设时长后清空所述HARQ缓存中的所述上行数据。
  18. 一种通信设备，其特征在于，包括：
    收发模块，用于接收网络设备发送的调度信息和指示信息，并根据所述调度信息，通过混合自动重传请求HARQ进程向所述网络设备发送上行数据；
    处理模块，用于根据所述收发模块接收的所述指示信息，清空所述HARQ进程所对应的HARQ缓存中的所述上行数据。
  19. 根据权利要求18所述的通信设备，其特征在于，
    所述处理模块，用于在所述指示信息用于指示所述通信设备在至少两个频域资源或至少两个无线承载上发送所述上行数据后清空所述HARQ缓存中的所述上行数据时，确定用于发送所述上行数据的频域资源或无线承载有至少两个，根据所述指示信息，在所述上行数据发送后，清空所述HARQ缓存中的所述上行数据。
  20. 根据权利要求18所述的通信设备，其特征在于，
    所述处理模块，用于在所述指示信息用于指示所述通信设备在至少两个时域资源发送所述上行数据后清空所述HARQ缓存中的所述上行数据时，确定用于发送所述上行数据的时域资源有至少两个，根据所述指示信息，在所述上行数据发送后，清空所述HARQ缓存中的所述上行数据。
  21. 根据权利要求18所述的通信设备，其特征在于，
    所述处理模块，用于在所述指示信息用于指示所述通信设备在发送了包含目标逻辑信道的标识信息的所述上行数据后清空所述HARQ缓存中的所述上行数据，确定所述上行数据 中包含目标逻辑信道的标识信息，根据所述指示信息，在发送所述上行数据后，清空所述HARQ缓存中的所述上行数据。
  22. 根据权利要求18所述的通信设备，其特征在于，
    所述处理模块，用于在所述指示信息用于指示所述通信设备在发送了包含目标协议数据单元会话PDU session的信息的上行数据后清空所述HARQ缓存中的所述上行数据，确定所述上行数据中包含目标PDU session的信息，根据所述指示信息，在发送所述上行数据后，清空所述HARQ缓存中的所述上行数据。
  23. 根据权利要求18所述的通信设备，其特征在于，
    所述处理模块，用于在所述指示信息包括所述网络设备配置的定时器，所述指示信息用于指示在所述定时器期满后清空所述HARQ缓存中的所述上行数据时，根据所述指示信息，在发送上行数据后，启动或重启所述定时器并进行时间监控，在所述定时器期满后清空所述HARQ缓存中的所述上行数据。
  24. 根据权利要求18所述的通信设备，其特征在于，
    所述处理模块，用于在所述指示信息包括定时器和预设时长，所述指示信息用于指示在所述定时器期满后，再等待所述预设时长后清空所述HARQ缓存中的所述上行数据时，根据所述指示信息，在发送上行数据后，启动或重启所述定时器并进行时间监控，在所述定时器期满后，并且所述预设时长也到达后清空所述HARQ缓存中的所述上行数据。
  25. 一种网络设备，其特征在于，包括：
    处理模块，用于确定调度信息和指示信息，所述调度信息用于指示通信设备通过混合自动重传请求HARQ进程向所述网络设备发送上行数据，所述指示信息用于指示所述通信设备在发送所述上行数据后清空所述HARQ进程所对应的HARQ缓存中的所述上行数据；
    收发模块，用于向通信设备发送所述处理模块确定的所述调度信息和所述指示信息。
  26. 根据权利要求25所述的网络设备，其特征在于，
    所述处理模块，用于将定时器确定为所述指示信息，所述指示信息用于指示所述通信设备在所述定时器期满后清空所述HARQ缓存中的所述上行数据。
  27. 一种通信设备，包括存储器、处理器及存储在所述存储器上并可在所述处理器上运行的程序，其特征在于，所述处理器执行所述程序时实现权利要求1至11中任一项所述的方法。
  28. 一种网络设备，包括存储器、处理器及存储在所述存储器上并可在所述处理器上运行的程序，其特征在于，所述处理器执行所述程序时实现权利要求12至17中任一项所述的方法。
  29. 一种计算机可读存储介质，其上存储有计算机程序，其特征在于，所述程序被处理器执行时实现如权利要求1至11中任一项所述的方法。
  30. 一种计算机可读存储介质，其上存储有计算机程序，其特征在于，所述程序被处理器执行时实现如权利要求12至17中任一项所述的方法。
PCT/CN2019/117029 2018-11-22 2019-11-11 一种缓存管理的方法及相应设备 WO2020103714A1 (zh)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201811399307.8 2018-11-22
CN201811399307.8A CN111211877A (zh) 2018-11-22 2018-11-22 一种缓存管理的方法及相应设备

Publications (1)

Publication Number Publication Date
WO2020103714A1 true WO2020103714A1 (zh) 2020-05-28

Family

ID=70773235

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2019/117029 WO2020103714A1 (zh) 2018-11-22 2019-11-11 一种缓存管理的方法及相应设备

Country Status (2)

Country Link
CN (1) CN111211877A (zh)
WO (1) WO2020103714A1 (zh)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115913469A (zh) * 2021-08-03 2023-04-04 大唐移动通信设备有限公司 Mac pdu的传输处理方法及装置

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103795510A (zh) * 2012-11-02 2014-05-14 北京三星通信技术研究有限公司 传输harq指示信息的方法和设备
CN105450368A (zh) * 2014-09-24 2016-03-30 上海贝尔股份有限公司 Lte-laa系统中在免许可载波上的harq重传的方法和装置

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103795510A (zh) * 2012-11-02 2014-05-14 北京三星通信技术研究有限公司 传输harq指示信息的方法和设备
CN105450368A (zh) * 2014-09-24 2016-03-30 上海贝尔股份有限公司 Lte-laa系统中在免许可载波上的harq重传的方法和装置

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
ERICSSON: "HARQ Retransmissions for Autonomous UL Access", 3GPP TSG-RAN WG2 #101 TDOC R2-1803505, 16 February 2018 (2018-02-16), XP051400549 *
SAMSUNG: "Potential Enhancement for UL Grant-free Transmission", 3GPP TSG RAN WG1 MEETING #94 R1-1808789, 11 August 2018 (2018-08-11), XP051516162 *

Also Published As

Publication number Publication date
CN111211877A (zh) 2020-05-29

Similar Documents

Publication Publication Date Title
US10952207B2 (en) Method for transmitting data, terminal device and network device
EP3621407B1 (en) Method and device for transmitting data
TWI754062B (zh) 配置帶寬的方法和設備
EP3634076B1 (en) Method and device for processing data
US10827480B2 (en) Method for transmitting control information, user equipment, and network device
US10856324B2 (en) Scheduling method and device
WO2020057519A1 (zh) 调度方法、设备与计算机可读存储介质
CN114342535B (zh) 上行信号的发送和接收方法以及装置
CN111316734B (zh) 用于同时物理上行链路控制信道pucch和物理上行链路共享信道pusch传输的对应配置
WO2020077667A1 (zh) 一种启动定时器的方法及装置、终端
WO2020103714A1 (zh) 一种缓存管理的方法及相应设备
WO2018170881A1 (zh) 通信方法、终端设备和网络设备
CN108811158B (zh) 处理用于逻辑信道的调度请求的装置及方法
CN114145037A (zh) 信息段传输
WO2017121213A1 (zh) 一种通信传输方法、终端设备及基站
WO2014047915A1 (zh) 参考信号发送和接收的方法和装置
WO2020087311A1 (zh) 一种数据传输方法及装置、网络设备、终端
CN113518461B (zh) 数据传输方法及装置
WO2022188649A1 (zh) 通信方法和装置
CN110326325B (zh) 数据传输的方法、终端设备和网络设备
JP6992173B2 (ja) 送信方法、端末デバイス、およびネットワークデバイス
WO2021031023A1 (zh) 一种信息处理方法和通信设备
WO2019238108A1 (zh) 一种上行信号传输方法、终端设备及网络设备
WO2023009117A1 (en) Apparatus and method of credit-based scheduling mechanism for layer 2 transmission scheduler

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 19886689

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 19886689

Country of ref document: EP

Kind code of ref document: A1