WO2021051284A1

WO2021051284A1 - Up line retransmission processing method, electronic device and storage medium

Info

Publication number: WO2021051284A1
Application number: PCT/CN2019/106261
Authority: WO
Inventors: 尤心
Original assignee: Oppo广东移动通信有限公司
Priority date: 2019-09-17
Filing date: 2019-09-17
Publication date: 2021-03-25
Also published as: CN113692755A; CN113692755B

Abstract

The present application discloses an up line (UL) retransmission processing method, comprising: when receiving a first UL grant sent by a target network device, user equipment sending indication information to a source network device, the indication information being used for indicating processing for UL retransmission. The present application further discloses another UL retransmission processing method, an electronic device and a storage medium.

Description

Uplink retransmission processing method, electronic equipment and storage medium

Technical field

This application relates to the field of wireless communication technology, and in particular to an uplink retransmission processing method, electronic equipment, and storage medium.

Background technique

In the connected state, after the terminal equipment (User Equipment, UE) randomly accesses the target cell, after receiving the first uplink (Up Line, UL) authorization (Grant) sent by the target network equipment corresponding to the target cell, the terminal equipment How to process the uplink retransmission corresponding to the source network device is a problem that needs to be solved urgently.

Summary of the invention

To solve the foregoing technical problems, embodiments of the present application provide an uplink retransmission processing method, electronic device, and storage medium, which can determine the processing of the uplink retransmission corresponding to the source network device by the terminal device.

In the first aspect, an embodiment of the present application provides an uplink retransmission processing method, including: in a case where the terminal device receives the first uplink authorization sent by the target network device, the terminal device sends instruction information to the source network device; The indication information is used to indicate the processing for uplink retransmission.

In a second aspect, an embodiment of the present application provides an uplink retransmission processing method, including: a source network device receives instruction information sent by a terminal device, where the instruction information is used to indicate processing for uplink retransmission.

In a third aspect, an embodiment of the present application provides a terminal device, the terminal device includes: a first receiving unit configured to receive an uplink authorization sent by a target network device;

The first sending unit is configured to send instruction information to the source network device when the first receiving unit receives the first uplink authorization sent by the target network device; the instruction information is used to indicate that the first uplink authorization is sent by the target network device; The processing of the transmission.

In a fourth aspect, an embodiment of the present application provides a source network device, the source network device includes: a second receiving unit configured to receive instruction information sent by a terminal device, where the instruction information is used to indicate processing for uplink retransmission .

In a fifth aspect, an embodiment of the present application provides a terminal device, including a processor and a memory for storing a computer program that can run on the processor, wherein the processor is used to execute the above-mentioned terminal when the computer program is running. The steps of the uplink retransmission processing method executed by the device.

In a sixth aspect, an embodiment of the present application provides a source network device, including a processor and a memory for storing a computer program that can run on the processor, wherein the processor is configured to execute the above-mentioned computer program when the computer program is running. The steps of the uplink retransmission processing method executed by the source network device.

In a seventh aspect, an embodiment of the present application provides a computer storage medium that stores an executable program, and when the executable program is executed by a processor, the above-mentioned uplink retransmission processing method executed by the terminal device is implemented.

In an eighth aspect, an embodiment of the present application provides a computer storage medium that stores an executable program, and when the executable program is executed by a processor, it implements the uplink retransmission processing method executed by the source network device.

In a ninth aspect, an embodiment of the present application provides a chip, including a processor, configured to call and run a computer program from a memory, so that a device installed with the chip executes the uplink retransmission processing method performed by the terminal device, or The upstream retransmission processing method performed by the source network device described above.

In a tenth aspect, an embodiment of the present application provides a computer program product, including computer program instructions that cause a computer to execute the uplink retransmission processing method executed by the above-mentioned terminal device, or the above-mentioned source network device executes the uplink retransmission processing method .

In an eleventh aspect, an embodiment of the present application provides a computer program that enables a computer to execute the uplink retransmission processing method performed by the above-mentioned terminal device or the uplink retransmission processing method performed by the above-mentioned source network device.

The uplink retransmission processing method provided by the embodiment of the present application includes: when the terminal device receives the first uplink authorization sent by the target network device, the terminal device sends instruction information to the source network device; the instruction information is used To indicate the processing for uplink retransmission. In this way, the source network device can determine the processing of the uplink retransmission corresponding to the source network device by the terminal device.

Description of the drawings

Figure 1 is a schematic diagram of the flow of cell handover in the NR system of the application;

2 is a schematic diagram of the composition structure of a communication system according to an embodiment of the application;

FIG. 3 is a schematic diagram of an optional processing flow of the uplink retransmission processing method of the application;

FIG. 4 is a schematic diagram of the composition structure of a terminal device according to an embodiment of the application;

FIG. 5 is a schematic diagram of the composition structure of a source network device according to an embodiment of the application;

FIG. 6 is a schematic diagram of the hardware composition structure of an electronic device according to an embodiment of the application.

detailed description

In order to have a more detailed understanding of the features and technical content of the embodiments of the present application, the implementation of the embodiments of the present application will be described in detail below with reference to the accompanying drawings. The attached drawings are for reference and explanation purposes only and are not used to limit the embodiments of the present application.

Before describing in detail the uplink retransmission processing method provided by the embodiment of the present application, a brief description of the related technology cell handover process and the cell handover processing method after the cell handover will be given.

At present, with people's pursuit of speed, delay, high-speed mobility, energy efficiency, and the diversity and complexity of services in future life, the 3GPP International Standards Organization has begun to develop 5G. The main application scenarios of 5G are: Enhance Mobile Broadband (eMBB), Ultra Reliable Low Latency Communications (URLLC), and Massive Machine Type Communication (mMTC).

eMBB still aims for users to obtain multimedia content, services and data, and its demand is growing very rapidly. On the other hand, because eMBB may be deployed in different scenarios, such as indoors, urban areas, rural areas, etc., its capabilities and requirements are also quite different, so it cannot be generalized, and must be analyzed in detail in conjunction with specific deployment scenarios. Typical applications of URLLC include: industrial automation, power automation, telemedicine operations (surgery), traffic safety protection, etc. The typical characteristics of mMTC include: high connection density, small data volume, delay-insensitive services, low cost and long service life of the module.

Similar to the LTE system, the New Radio (NR) system supports the handover process of connected terminal devices. When a terminal device that is using network services moves from one cell to another, or due to wireless transmission service load adjustment, activation operation and maintenance, equipment failure, etc., in order to ensure the continuity of communication and the quality of service, the system must The communication link between the terminal equipment and the original cell is transferred to the new cell, that is, the handover process is performed.

Taking the Xn interface handover process as an example, the cell handover process suitable for the LTE system and the NR system, as shown in Figure 1, is divided into the following three stages:

Phase 1 (including steps 1 to 5), handover preparation: including measurement control and reporting, handover request and confirmation.

Phase 2 (including steps 6 to 8), handover execution: the terminal device immediately executes the handover process after receiving the handover command, that is, the terminal device disconnects the source cell and connects to the target cell (such as performing random access, sends an RRC handover complete message to Target network equipment, etc.); secondary node (Secondary Node, SN) state transfer, data forwarding.

Phase 3 (including steps 9 to 12), the handover is completed: the target cell and the (Acess and Mobility Management Function, AMF) and the user plane function (User Port Function, UPF) execute the path switch (Path Switch), and release the terminal of the source network device Device context.

In the 3GPP mobility enhancement study of the LTE system and the NR system, the architecture for reducing the connection interruption time of the terminal device during cell handover includes the following two types:

One is to first add the target network device as a secondary node (Secondary Node, SN) during the cell handover process; then use role change signaling to convert the target network device from the SN to the master node (Master Node, MN). ); finally release the source network equipment, so as to achieve the effect of reducing the connection interruption time during cell handover.

The other is that when the terminal device receives the handover command, the terminal device continues to maintain the connection with the source network device, and at the same time initiates random access to the target network device, and then releases the source network device until the terminal device completes the access to the target cell.

In the related art, when the random access process initiated by the terminal device to the target cell is completed, and the first UL Grant sent by the target network device corresponding to the target cell is received, the terminal device transfers the new Packet Data Convergence Protocol (Packet Data). Convergence Protocol (PDCP) Service Data Unit (Service Data Unit, SDU) transmission and unconfirmed PDCP SDU transmission are switched to the target network device. However, the downstream transmission of the source network device is still continuing, and the upstream transmission associated with the downstream transmission performed by the source network device, such as Hybrid Automatic Repeat reQuest (HARQ) Acknowledgement (ACK)/Negative (NACK), Channel State Information (CSI) report (report), Automatic Repeat reQuest (ARQ) ACK/NACK, etc. still need to be continued. Among them, because both the new PDCP SDU and the unconfirmed PDCP SDU will be transmitted through the target network device, the uplink HARQ retransmission, such as Physical Uplink Shared Channel (PUSCH) retransmission, does not need to be performed. Therefore, how to stop the uplink retransmission for the source network device, such as HARQ retransmission, is a problem that needs to be solved. In addition, since the terminal device simultaneously sends the PUSCH to the source network device and the target network device may exceed the maximum power of the terminal device; therefore, by stopping the uplink retransmission for the source network device, the problem of power limitation of the terminal device can be alleviated.

Based on the above problems, this application provides an uplink retransmission processing method. The uplink retransmission processing method in the embodiments of this application can be applied to various communication systems, such as: Global System of Mobile communication (GSM) system, code Code Division Multiple Access (CDMA) system, Wideband Code Division Multiple Access (WCDMA) system, General Packet Radio Service (GPRS), LTE system, LTE Frequency Division Duplex (Frequency Division Duplex, FDD) system, LTE Time Division Duplex (TDD), Universal Mobile Telecommunication System (UMTS), Worldwide Interoperability for Microwave Access (WiMAX) communication system Or 5G system, etc.

Exemplarily, the communication system 100 applied in the embodiment of the present application is shown in FIG. 2. The communication system 100 may include a network device 110, and the network device 110 may be a device that communicates with a terminal device 120 (or called a communication terminal or terminal). The network device 110 may provide communication coverage for a specific geographic area, and may communicate with terminal devices located in the coverage area. Optionally, the network device 110 may be a base station (Base Transceiver Station, BTS) in a GSM system or a CDMA system, a base station (NodeB, NB) in a WCDMA system, or an evolved base station in an LTE system (Evolutional Node B, eNB or eNodeB), or the wireless controller in the Cloud Radio Access Network (CRAN), or the network equipment can be a mobile switching center, a relay station, an access point, a vehicle-mounted device, Wearable devices, hubs, switches, bridges, routers, network-side devices in 5G networks, or network devices in the future evolution of the Public Land Mobile Network (PLMN), etc.

The communication system 100 also includes at least one terminal device 120 located within the coverage area of the network device 110. The "terminal equipment" used here includes but is not limited to connection via wired lines, such as via public switched telephone networks (PSTN), digital subscriber lines (Digital Subscriber Line, DSL), digital cables, and direct cable connections ; And/or another data connection/network; and/or via a wireless interface, such as for cellular networks, wireless local area networks (WLAN), digital TV networks such as DVB-H networks, satellite networks, AM- FM broadcast transmitter; and/or another terminal device that is set to receive/send communication signals; and/or Internet of Things (IoT) equipment. A terminal device set to communicate through a wireless interface may be referred to as a "wireless communication terminal", a "wireless terminal" or a "mobile terminal". Examples of mobile terminals include, but are not limited to, satellite or cellular phones; Personal Communications System (PCS) terminals that can combine cellular radio phones with data processing, fax, and data communication capabilities; can include radio phones, pagers, Internet/intranet PDA with internet access, web browser, memo pad, calendar, and/or Global Positioning System (GPS) receiver; and conventional laptop and/or palmtop receivers or others including radio telephone transceivers Electronic device. Terminal equipment can refer to access terminals, user equipment (UE), user units, user stations, mobile stations, mobile stations, remote stations, remote terminals, mobile equipment, user terminals, terminals, wireless communication equipment, user agents, or User device. The access terminal can be a cellular phone, a cordless phone, a Session Initiation Protocol (SIP) phone, a wireless local loop (Wireless Local Loop, WLL) station, a personal digital processing (Personal Digital Assistant, PDA), with wireless communication Functional handheld devices, computing devices or other processing devices connected to wireless modems, in-vehicle devices, wearable devices, terminal devices in 5G networks, or terminal devices in the future evolution of PLMN, etc.

Optionally, direct terminal connection (Device to Device, D2D) communication may be performed between the terminal devices 120.

Optionally, the 5G system or 5G network may also be referred to as a New Radio (NR) system or NR network.

Figure 2 exemplarily shows one network device and two terminal devices. Optionally, the communication system 100 may include multiple network devices and the coverage of each network device may include other numbers of terminal devices. The embodiment does not limit this.

Optionally, the communication system 100 may also include other network entities such as a network controller and a mobility management entity, which are not limited in the embodiment of the present application.

It should be understood that the devices with communication functions in the network/system in the embodiments of the present application may be referred to as communication devices. Taking the communication system 100 shown in FIG. 2 as an example, the communication device may include a network device 110 having a communication function and a terminal device 120. The network device 110 and the terminal device 120 may be the specific devices described above, which will not be repeated here. The communication device may also include other devices in the communication system 100, such as network controllers, mobility management entities, and other network entities, which are not limited in the embodiment of the present application.

An optional processing procedure of the uplink retransmission processing method provided by the embodiment of the present application, as shown in FIG. 3, includes the following steps:

Step S201: When the terminal device receives the first uplink authorization sent by the target network device, the terminal device sends instruction information to the source network device; the instruction information is used to indicate processing for uplink retransmission.

In some embodiments, the indication information is used to indicate at least one of the following: the source network device stops scheduling uplink retransmissions, and the terminal device has emptied the HARQ buffer corresponding to the source network device , The terminal device has switched the uplink transmission to the target network device. In this way, by stopping the uplink retransmission corresponding to the source network device, the terminal device does not need to send uplink data to the source network device and the target network device at the same time, which can alleviate the problem of power limitation of the terminal device.

In some embodiments, the first uplink authorization may be the scheduling sent by the target network device through a random access response (Random Access Response, RAR); the first uplink authorization may also be the target network The scheduling of contention resolution messages sent by the device. Wherein, the scheduling sent by the target network device through the contention resolution message includes at least: Physical Downlink Control Channel (PDCCH) scrambled by the Cell-Radio Network Temporary Identifier (C-RNTI) Or, using a temporary cell radio network temporary identifier (Temporary Cell-Radio Network Temporary Identifier, TC-RNTI) scrambled PDCCH.

In some embodiments, in addition to performing step S201, the uplink retransmission processing method provided in the embodiments of the present application further includes:

Step S202: The terminal device switches the uplink transmission to the target network device.

In some embodiments, the terminal device switches the new PDCP SDU and the retransmitted PDCP SDU to the target network device. Wherein, the new PDCP SDU refers to the PDCP SDU transmitted for the first time; the retransmitted PDCP SDU refers to the PDCP SDU transmitted for the first time.

In some embodiments, the uplink retransmission processing method provided in the embodiments of the present application further includes:

Step S203: The terminal device clears the HARQ buffer corresponding to the source network device.

It can be understood that when step S203 is executed, only step S201 may be executed, or step S201 and step S202 may be executed.

In some embodiments, in the case that the terminal device receives the scheduling for the uplink retransmission by the source network device, the terminal device ignores the scheduling for the uplink retransmission. For example, if the source network device sends a PDCCH for scheduling HARQ retransmission to the terminal device (where UL Grant is indicated), the terminal device ignores the UL Grant.

In some embodiments, the purpose of clearing the HARQ buffer corresponding to the source network device is to stop transmitting PDCP data PDU. Since the MAC PDU includes RLC ACK/NACK feedback, ROHC feedback, and PDCP PDU, the terminal device still needs to retransmit RLC ACK/NACK feedback and Robust Header Compression (ROHC) feedback to the source network device. In this way, the terminal device clears the HARQ buffer corresponding to the source network device and no longer transmits PDCP PDU to the source network device, which not only avoids unnecessary uplink transmission to the source network device, but also avoids the source network device from forwarding data to the target network device package. In addition, reducing the information carried by the MAC PDU can save the uplink power and uplink radio resources of the terminal device.

Therefore, in some embodiments, the uplink retransmission processing method provided in the embodiments of the present application further includes:

Step S204: The terminal device sends a status report to the source network device.

In some embodiments, the terminal device triggers a Radio Link Control (RLC) layer entity to send a status report (status report), such as RLC ACK/NACK feedback, to the source network device.

In other embodiments, the terminal device triggers the PDCP layer entity to send a status report, such as ROHC feedback, to the source network device.

It can be understood that when step S204 is executed, only step S201 may be executed; or in addition to step S201, at least one of step S202 and step S203 may be executed.

The terminal device triggers the RLC layer entity and/or the terminal device to trigger the PDCP layer entity to send a status report to the source network device, which can effectively provide uplink control signaling for the source network device's downlink data transmission without increasing the source network device's downlink data The transmission interruption time.

Step S205: When the terminal device receives the scheduling of the new uplink transmission from the source network device, the terminal device sends the new uplink transmission.

In some embodiments, if the source network device sends a schedule for a new uplink transmission to the terminal device instead of a schedule for an uplink retransmission, the terminal device sends a new uplink transmission to the source network device.

It can be understood that when step S205 is executed, only step S201 may be executed; or in addition to step S201, at least one of step S202, step S203, and step S204 may be executed.

In some embodiments, before step S201 is performed, the method further includes:

Step S200, the terminal device receives the handover command sent by the source network device, the terminal device initiates a random access process to the target cell corresponding to the target network device, and successfully accesses the target cell.

In some embodiments, the terminal device is a terminal device in a connected state; the switching command may be an enhanced make before break (Enhance Make Before Break, EMBB) switching command; the switching command may be a dual activation protocol A stack (Dual Active Protocol Stack, DAPS) handover command; the handover command may include configuration information of the target cell.

In some embodiments, the terminal device maintains uplink transmission and downlink transmission with the source network device while initiating a random access procedure to the target cell.

It can be understood that the terminal device stops the uplink retransmission with the source network device after accessing the target cell; however, it still performs a new uplink transmission with the source network device.

It should be understood that in the various embodiments of the present application, the size of the sequence number of the above-mentioned processes does not mean the order of execution, and the execution order of each process should be determined by its function and internal logic, and should not correspond to the embodiments of the present application. The implementation process constitutes any limitation.

To implement the above uplink retransmission processing method, an embodiment of the present application provides a terminal device. The composition structure of the terminal device 300, as shown in FIG. 4, includes:

The first receiving unit 301 is configured to receive an uplink authorization sent by a target network device;

The first sending unit 302 is configured to send instruction information to the source network device when the first receiving unit receives the first uplink authorization sent by the target network device; the instruction information is used to indicate that the first uplink authorization is sent by the target network device; Retransmission processing.

In some embodiments, the indication information is used to indicate at least one of the following:

The source network device stops scheduling uplink retransmissions;

The terminal device has cleared the HARQ buffer corresponding to the source network device;

The terminal device has switched the uplink transmission to the target network device.

In some embodiments, the terminal device further includes:

The first processing unit 303 is configured to clear the HARQ buffer corresponding to the source network device.

In some embodiments, the terminal device further includes:

The second processing unit 304 is configured to ignore the scheduling for the uplink retransmission when the terminal device receives the scheduling for the uplink retransmission by the source network device.

In some embodiments, the first sending unit 302 is further configured to send a status report to the source network device.

In some embodiments, the status report includes:

RLC ACK/NACK feedback sent by the RLC entity of the terminal device;

And/or, ROHC feedback sent by the PDCP entity of the terminal device.

In some embodiments, the first sending unit 302 is further configured to send the new uplink transmission when the terminal device receives the scheduling of the source network device for the new uplink transmission.

In some embodiments, the first uplink grant includes at least: scheduling sent by the target network device through RAR, and/or scheduling sent by the target network device through a contention resolution message.

In some embodiments, the scheduling of sending the contention resolution message by the target network device includes at least:

PDCCH scrambled with C-RNTI; or PDCCH scrambled with TC-RNTI.

To implement the above uplink retransmission processing method, an embodiment of the present application provides a source network device. The composition structure of the source network device 400, as shown in FIG. 5, includes:

The second receiving unit 401 is configured to receive instruction information sent by a terminal device, where the instruction information is used to indicate processing for uplink retransmission.

The source network device stops scheduling uplink retransmissions;

In some embodiments, the second receiving unit 401 is further configured to receive a status report sent by the terminal device.

In some embodiments, the status report includes:

RLC ACK/NACK feedback sent by the RLC entity of the terminal device;

And/or, ROHC feedback sent by the PDCP entity of the terminal device.

In some embodiments, the source network device further includes:

The second sending unit 402 is configured to send a schedule for a new uplink transmission to the terminal device.

In some embodiments, the second receiving unit 401 is further configured to receive the new uplink transmission sent by the terminal device.

An embodiment of the present application also provides a terminal device, including a processor and a memory for storing a computer program that can run on the processor, wherein the processor is used to execute the above-mentioned terminal device when the computer program is running. The steps of the uplink retransmission processing method.

An embodiment of the present application also provides a source network device, including a processor and a memory for storing a computer program that can run on the processor, where the processor is used to run the computer program to execute the above-mentioned network device execution The steps of the uplink retransmission processing method.

6 is a schematic diagram of the hardware composition structure of an electronic device (terminal device and source network device) according to an embodiment of the present application. The electronic device 700 includes: at least one processor 701, a memory 702, and at least one network interface 704. The various components in the electronic device 700 are coupled together through the bus system 705. It can be understood that the bus system 705 is used to implement connection and communication between these components. In addition to the data bus, the bus system 705 also includes a power bus, a control bus, and a status signal bus. However, for the sake of clarity, various buses are marked as the bus system 705 in FIG. 6.

It can be understood that the memory 702 may be a volatile memory or a non-volatile memory, and may also include both volatile and non-volatile memory. Among them, the non-volatile memory can be ROM, Programmable Read-Only Memory (PROM), Erasable Programmable Read-Only Memory (EPROM), and electrically erasable Programmable read-only memory (EEPROM, Electrically Erasable Programmable Read-Only Memory), magnetic random access memory (FRAM, ferromagnetic random access memory), flash memory (Flash Memory), magnetic surface memory, optical disk, or CD-ROM -ROM, Compact Disc Read-Only Memory); Magnetic surface memory can be disk storage or tape storage. The volatile memory may be a random access memory (RAM, Random Access Memory), which is used as an external cache. By way of exemplary but not restrictive description, many forms of RAM are available, such as static random access memory (SRAM, Static Random Access Memory), synchronous static random access memory (SSRAM, Synchronous Static Random Access Memory), and dynamic random access memory. Memory (DRAM, Dynamic Random Access Memory), Synchronous Dynamic Random Access Memory (SDRAM, Synchronous Dynamic Random Access Memory), Double Data Rate Synchronous Dynamic Random Access Memory (DDRSDRAM, Double Data Rate Synchronous Dynamic Random Access Memory), enhanced Type synchronous dynamic random access memory (ESDRAM, Enhanced Synchronous Dynamic Random Access Memory), synchronous connection dynamic random access memory (SLDRAM, SyncLink Dynamic Random Access Memory), direct memory bus random access memory (DRRAM, Direct Rambus Random Access Memory) ). The memory 702 described in the embodiment of the present application is intended to include, but is not limited to, these and any other suitable types of memory.

The memory 702 in the embodiment of the present application is used to store various types of data to support the operation of the electronic device 700. Examples of these data include: any computer program used to operate on the electronic device 700, such as the application program 7022. A program that implements the method of the embodiment of the present application may be included in the application program 7022.

The method disclosed in the foregoing embodiments of the present application may be applied to the processor 701 or implemented by the processor 701. The processor 701 may be an integrated circuit chip with signal processing capabilities. In the implementation process, the steps of the foregoing method can be completed by an integrated logic circuit of hardware in the processor 701 or instructions in the form of software. The aforementioned processor 701 may be a general-purpose processor, a digital signal processor (DSP, Digital Signal Processor), or other programmable logic devices, discrete gates or transistor logic devices, discrete hardware components, and the like. The processor 701 may implement or execute the methods, steps, and logical block diagrams disclosed in the embodiments of the present application. The general-purpose processor may be a microprocessor or any conventional processor or the like. Combining the steps of the method disclosed in the embodiments of the present application, it may be directly embodied as being executed and completed by a hardware decoding processor, or executed and completed by a combination of hardware and software modules in the decoding processor. The software module may be located in a storage medium, and the storage medium is located in the memory 702. The processor 701 reads the information in the memory 702 and completes the steps of the foregoing method in combination with its hardware.

In an exemplary embodiment, the electronic device 700 may be used by one or more Application Specific Integrated Circuits (ASIC, Application Specific Integrated Circuit), DSP, Programmable Logic Device (PLD, Programmable Logic Device), and Complex Programmable Logic Device (CPLD). , Complex Programmable Logic Device), FPGA, general-purpose processor, controller, MCU, MPU, or other electronic components to implement the foregoing method.

The embodiments of the present application also provide a computer storage medium for storing executable programs.

Optionally, the computer storage medium can be applied to the terminal device in the embodiment of the present application, and the executable program enables the computer to execute the corresponding process in each method of the embodiment of the present application. For the sake of brevity, details are not described herein again.

Optionally, the computer storage medium can be applied to the source network device in the embodiment of the present application, and the executable program causes the computer to execute the corresponding process in each method of the embodiment of the present application. For brevity, details are not described herein again.

An embodiment of the present application provides a chip, including: a processor, configured to call and run a computer program from a memory, so that a device installed with the chip executes the uplink retransmission processing method performed by the above-mentioned terminal device, or the above-mentioned source network device The executed uplink retransmission processing method.

The embodiments of the present application provide a computer program product, including computer program instructions, which cause a computer to execute the uplink retransmission processing method executed by the above-mentioned terminal device or the above-mentioned upstream retransmission processing method executed by the source network device.

The embodiment of the present application provides a computer program that enables a computer to execute the uplink retransmission processing method performed by the above terminal device or the uplink retransmission processing method performed by the source network device described above.

This application is described with reference to flowcharts and/or block diagrams of methods, devices (systems), and computer program products according to embodiments of this application. It should be understood that each process and/or block in the flowchart and/or block diagram, and the combination of processes and/or blocks in the flowchart and/or block diagram can be implemented by computer program instructions. These computer program instructions can be provided to the processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing equipment to generate a machine, so that the instructions executed by the processor of the computer or other programmable data processing equipment are generated It is a device that realizes the functions specified in one process or multiple processes in the flowchart and/or one block or multiple blocks in the block diagram.

These computer program instructions can also be stored in a computer-readable memory that can guide a computer or other programmable data processing equipment to work in a specific manner, so that the instructions stored in the computer-readable memory produce an article of manufacture including the instruction device. The device implements the functions specified in one process or multiple processes in the flowchart and/or one block or multiple blocks in the block diagram.

These computer program instructions can also be loaded on a computer or other programmable data processing equipment, so that a series of operation steps are executed on the computer or other programmable equipment to produce computer-implemented processing, so as to execute on the computer or other programmable equipment. The instructions provide steps for implementing the functions specified in one process or multiple processes in the flowchart and/or one block or multiple blocks in the block diagram.

The above are only the preferred embodiments of this application and are not used to limit the scope of protection of this application. Any modification, equivalent replacement and improvement made within the spirit and principle of this application shall be included in Within the scope of protection of this application.

Claims

An uplink retransmission processing method, the method includes:

When the terminal device receives the first uplink authorization sent by the target network device, the terminal device sends instruction information to the source network device; the instruction information is used to indicate processing for uplink retransmission.
The method according to claim 1, wherein the indication information is used to indicate at least one of the following:

The source network device stops scheduling uplink retransmissions;

The terminal device has cleared the HARQ buffer corresponding to the source network device's hybrid automatic repeat request buffer;

The terminal device has switched the uplink transmission to the target network device.
The method according to claim 1 or 2, wherein the method further comprises:

The terminal device clears the HARQ buffer corresponding to the source network device.
The method according to any one of claims 1 to 3, wherein the method further comprises:

When the terminal device receives the scheduling for the uplink retransmission by the source network device, the terminal device ignores the scheduling for the uplink retransmission.
The method according to any one of claims 1 to 4, wherein the method further comprises:

The terminal device sends a status report to the source network device.
The method of claim 5, wherein the status report includes:

RLC acknowledgement ACK/no NACK feedback sent by the radio link layer control protocol RLC entity of the terminal device;

And/or, the robustness header compressed ROHC feedback sent by the PDCP entity of the terminal device.
The method according to any one of claims 1 to 6, wherein the method further comprises:

When the terminal device receives the scheduling of the source network device for the new uplink transmission, the terminal device sends the new uplink transmission.
The method according to any one of claims 1 to 7, wherein the first uplink authorization at least includes:

The target network device responds to the scheduling sent by the RAR through random access, and/or the target network device sends the scheduling through the contention resolution message.
The method according to claim 8, wherein the scheduling of the contention resolution message transmission by the target network device comprises at least:

Physical downlink control channel PDCCH scrambled by using the cell radio network temporary identification C-RNTI;

Alternatively, the PDCCH scrambled by the TC-RNTI may be temporarily identified by the wireless network of the temporary cell.
An uplink retransmission processing method, the method includes:

The source network device receives the instruction information sent by the terminal device, where the instruction information is used to indicate processing for uplink retransmission.
The method according to claim 10, wherein the indication information is used to indicate at least one of the following:

The source network device stops scheduling uplink retransmissions;

The terminal device has cleared the HARQ buffer corresponding to the source network device's hybrid automatic repeat request buffer;

The terminal device has switched the uplink transmission to the target network device.
The method according to claim 10 or 11, wherein the method further comprises:

The source network device receives the status report sent by the terminal device.
The method of claim 12, wherein the status report includes:

RLC acknowledgement ACK/no NACK feedback sent by the radio link layer control protocol RLC entity of the terminal device;

And/or, the robustness header compressed ROHC feedback sent by the PDCP entity of the packet data convergence protocol of the terminal device.
The method according to any one of claims 10 to 13, wherein the method further comprises:

The source network device sends a schedule for a new uplink transmission to the terminal device.
The method according to claim 14, wherein the method further comprises:

The source network device receives the new uplink transmission sent by the terminal device.
A terminal device, the terminal device includes:

The first receiving unit is configured to receive the uplink authorization sent by the target network device;

The first sending unit is configured to send instruction information to the source network device when the first receiving unit receives the first uplink authorization sent by the target network device; The processing of the transmission.
The terminal device according to claim 16, wherein the indication information is used to indicate at least one of the following:

The source network device stops scheduling uplink retransmissions;

The terminal device has cleared the HARQ buffer corresponding to the source network device's hybrid automatic repeat request buffer;

The terminal device has switched the uplink transmission to the target network device.
The terminal device according to claim 16 or 17, wherein the terminal device further comprises:

The first processing unit is configured to clear the HARQ buffer corresponding to the source network device.
The terminal device according to any one of claims 16 to 18, wherein the terminal device further comprises:

The second processing unit is configured to ignore the scheduling for uplink retransmission when the terminal device receives the scheduling for uplink retransmission by the source network device.
The terminal device according to any one of claims 16 to 19, wherein the first sending unit is further configured to send a status report to the source network device.
The terminal device according to claim 20, wherein the status report comprises:

RLC acknowledgement ACK/no NACK feedback sent by the radio link layer control protocol RLC entity of the terminal device;

And/or, the robustness header compressed ROHC feedback sent by the PDCP entity of the terminal device.
The terminal device according to any one of claims 16 to 21, wherein the first sending unit is further configured to, when the terminal device receives the scheduling of the source network device for a new uplink transmission, Send the new uplink transmission.
The terminal device according to any one of claims 16 to 22, wherein the first uplink authorization at least includes:

The target network device responds to the scheduling sent by the RAR through random access, and/or the target network device sends the scheduling through the contention resolution message.
The terminal device according to claim 23, wherein the scheduling of the contention resolution message sent by the target network device at least comprises:

Physical downlink control channel PDCCH scrambled by using the cell radio network temporary identification C-RNTI;

Alternatively, the PDCCH scrambled by the TC-RNTI may be temporarily identified by the wireless network of the temporary cell.
A source network device, the source network device includes:

The second receiving unit is configured to receive instruction information sent by the terminal device, where the instruction information is used to indicate processing for uplink retransmission.
The source network device according to claim 25, wherein the indication information is used to indicate at least one of the following:

The source network device stops scheduling uplink retransmissions;

The terminal device has cleared the HARQ buffer corresponding to the source network device's hybrid automatic repeat request buffer;

The terminal device has switched the uplink transmission to the target network device.
The source network device according to claim 25 or 26, wherein the second receiving unit is further configured to receive a status report sent by the terminal device.
The source network device of claim 27, wherein the status report includes:

RLC acknowledgement ACK/no NACK feedback sent by the radio link layer control protocol RLC entity of the terminal device;

And/or, the robustness header compressed ROHC feedback sent by the PDCP entity of the terminal device.
The source network device according to any one of claims 26 to 28, wherein the source network device further comprises:

The second sending unit is configured to send a schedule for a new uplink transmission to the terminal device.
The source network device according to claim 29, wherein the second receiving unit is further configured to receive the new uplink transmission sent by the terminal device.
A terminal device includes a processor and a memory for storing a computer program that can run on the processor, wherein:

When the processor is used to run the computer program, it executes the steps of the uplink retransmission processing method according to any one of claims 1 to 9.
A source network device, including a processor and a memory for storing a computer program that can run on the processor, wherein:

When the processor is used to run the computer program, it executes the steps of the uplink retransmission processing method according to any one of claims 10 to 15.
A computer storage medium storing an executable program, and when the executable program is executed by a processor, the uplink retransmission processing method according to any one of claims 1 to 9 is implemented.
A computer storage medium storing an executable program that, when executed by a processor, implements the uplink retransmission processing method according to any one of claims 10 to 15.
A chip comprising: a processor, configured to call and run a computer program from a memory, so that a device installed with the chip executes the method according to any one of claims 1 to 9, or claims 10 to 15 The method of any one of.
A computer program product comprising computer program instructions that cause a computer to execute the method according to any one of claims 1 to 9 or the method according to any one of claims 10 to 15.
A computer program that causes a computer to execute the method according to any one of claims 1 to 9 or the method according to any one of claims 10 to 15.