CN113692755A

CN113692755A - Uplink retransmission processing method, electronic device and storage medium

Info

Publication number: CN113692755A
Application number: CN201980095350.1A
Authority: CN
Inventors: 尤心
Original assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Current assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Priority date: 2019-09-17
Filing date: 2019-09-17
Publication date: 2021-11-23
Anticipated expiration: 2039-09-17
Also published as: WO2021051284A1; CN113692755B

Abstract

The application discloses an uplink retransmission processing method, which comprises the following steps: the method comprises the steps that when terminal equipment receives a first uplink authorization sent by target network equipment, the terminal equipment sends indication information to source network equipment; the indication information is used for indicating the processing aiming at the uplink retransmission. The application also discloses another uplink retransmission processing method, electronic equipment and a storage medium.

Description

Uplink retransmission processing method, electronic device and storage medium

Technical Field

The present application relates to the field of wireless communications technologies, and in particular, to an uplink retransmission processing method, an electronic device, and a storage medium.

Background

After a terminal device (UE) in a connected state randomly accesses to a target cell and receives a first uplink (Up Line, UL) Grant sent by a target network device corresponding to the target cell, how the terminal device processes an uplink retransmission corresponding to a source network device is an urgent problem to be solved.

Disclosure of Invention

In order to solve the foregoing technical problem, embodiments of the present application provide an uplink retransmission processing method, an electronic device, and a storage medium, which can determine that a terminal device processes an uplink retransmission corresponding to a source network device.

In a first aspect, an embodiment of the present application provides an uplink retransmission processing method, including: the method comprises the steps that when terminal equipment receives a first uplink authorization sent by target network equipment, the terminal equipment sends indication information to source network equipment; the indication information is used for indicating the processing aiming at the uplink retransmission.

In a second aspect, an embodiment of the present application provides an uplink retransmission processing method, including: and the source network equipment receives indication information sent by the terminal equipment, wherein the indication information is used for indicating the processing aiming at the uplink retransmission.

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

a first sending unit, configured to send instruction information to a source network device when the first receiving unit receives a first uplink grant sent by the target network device; the indication information is used for indicating the processing aiming at the uplink retransmission.

In a fourth aspect, an embodiment of the present application provides a source network device, where the source network device includes: and a second receiving unit, configured to receive indication information sent by the terminal device, where the indication 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, where the memory is used for storing a computer program that can be executed on the processor, and the processor is configured to execute the steps of the uplink retransmission processing method executed by the terminal device when the processor is used for executing the computer program.

In a sixth aspect, an embodiment of the present application provides a source network device, including a processor and a memory, where the memory is used for storing a computer program that can be executed on the processor, and when the processor is used for executing the computer program, the method for processing an uplink retransmission performed by the source network device is executed.

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

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

In a ninth aspect, an embodiment of the present application provides a chip, including: and the processor is used for calling and running the computer program from the memory so that the equipment provided with the chip executes the uplink retransmission processing method executed by the terminal equipment or the uplink retransmission processing method executed by the source network equipment.

In a tenth aspect, an embodiment of the present application provides a computer program product, which includes computer program instructions, where the computer program instructions enable a computer to execute an uplink retransmission processing method executed by the terminal device or an uplink retransmission processing method executed by the source network device.

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

The uplink retransmission processing method provided by the embodiment of the application comprises the following steps: the method comprises the steps that when terminal equipment receives a first uplink authorization sent by target network equipment, the terminal equipment sends indication information to source network equipment; the indication information is used for indicating the processing aiming at the 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.

Drawings

Fig. 1 is a schematic flow chart of cell handover in the NR system of the present application;

fig. 2 is a schematic structural diagram of a communication system according to an embodiment of the present application;

fig. 3 is a schematic diagram of an alternative processing flow of the uplink retransmission processing method according to the present application;

fig. 4 is a schematic structural diagram of a terminal device according to an embodiment of the present application;

fig. 5 is a schematic structural diagram of a source network device according to an embodiment of the present application;

fig. 6 is a schematic diagram of a hardware component structure of an electronic device according to an embodiment of the present application.

Detailed Description

So that the manner in which the features and elements of the present embodiments can be understood in detail, a more particular description of the embodiments, briefly summarized above, may be had by reference to embodiments, some of which are illustrated in the appended drawings.

Before describing the uplink retransmission processing method provided in the embodiment of the present application in detail, a cell handover process and a cell handover processing method after cell handover in the related art are briefly described.

Currently, with the pursuit of speed, delay, high-speed mobility, energy efficiency, and 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: enhanced Mobile Ultra wide band (eMBB), Low Latency high reliability Communications (URLLC), and Massive Machine Type Communications (mMTC).

The eMBB still targets users to obtain multimedia content, services and data, and its demand is growing very rapidly. On the other hand, because the eMBB may be deployed in different scenarios, such as indoor, urban, rural, etc., and the difference between the capabilities and the requirements is relatively large, it cannot be said in a general way, and it is necessary to analyze in detail in combination with a specific deployment scenario. Typical applications of URLLC include: industrial automation, electric power automation, remote medical operation (surgery), traffic safety, and the like. Typical characteristics of mtc include: high connection density, small data volume, insensitive time delay service, low cost and long service life of the module, etc.

Similar to the LTE system, a New Radio (NR) system supports a handover procedure of a connected terminal device. When a terminal device using network service moves from one cell to another cell, or due to reasons such as adjustment of wireless transmission service load, activation of operation maintenance, device failure, etc., in order to ensure communication continuity and service quality, the system needs to transfer a communication link between the terminal device and an original cell to a new cell, i.e., to perform a handover procedure.

Taking an Xn interface handover process as an example, the cell handover process applicable to the LTE system and the NR system is divided into the following three stages as shown in fig. 1:

phase 1 (including steps 1 to 5), handover preparation: including measurement control and reporting, handover requests, and acknowledgements.

Stage 2 (comprising steps 6 to 8), the handover is performed: the terminal equipment immediately executes the switching process after receiving the switching command, namely the terminal equipment disconnects the source cell and is connected with the target cell (for example, random access is executed, and an RRC switching completion message is sent to the target network equipment and the like); and (4) state transfer and data forwarding of a Secondary Node (SN).

Stage 3 (including steps 9 to 12), handover complete: the target cell and (AMF) and the User Plane Function (UPF) perform Path switching (Path Switch), releasing the terminal device context of the source network device.

In the 3GPP mobility enhancement research of the LTE system and the NR system, the following two architectures are included for reducing the connection interruption time when the terminal device performs cell handover:

one is in the process of cell switching, firstly, adding target network equipment as a Secondary Node (SN); then the target network device is converted from SN to Master Node (MN) through role change signaling; and finally, releasing the source network equipment, thereby achieving the effect of reducing the connection interruption time during cell switching.

And the other is that when the terminal equipment receives the switching command, the terminal equipment continues to keep the connection with the source network equipment, and simultaneously initiates random access to the target network equipment until the terminal equipment is accessed to the target cell to release the source network equipment.

In the related art, when a random access process initiated by a terminal device to a target cell is completed, a first UL Grant sent by a target network device corresponding to the target cell is received, and the terminal device switches transmission of a new Packet Data Convergence Protocol (PDCP) Service Data Unit (SDU) and transmission of an unconfirmed PDCP SDU to the target network device. However, the downlink transmission of the source network device is still ongoing, and uplink transmission related to the downlink transmission performed by the source network device, such as Hybrid Automatic Repeat reQuest (HARQ) Acknowledgement (ACK)/Negative Acknowledgement (NACK), Channel State Information (CSI) report (report), Automatic Repeat reQuest (ARQ) ACK/NACK, etc., still needs to be ongoing. Here, because both the new PDCP SDU and the unacknowledged PDCP SDU will be transmitted by the target network device, HARQ retransmission for Uplink, such as Physical Uplink Shared Channel (PUSCH) retransmission, does not need to be performed. Therefore, how to stop the uplink retransmission, such as HARQ retransmission, for the source network device is a problem to be solved. Moreover, the PUSCH transmitted by the terminal device to the source network device and the target network device at the same time 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 problem, the present application provides an uplink retransmission processing method, and the uplink retransmission processing method according to the embodiment of the present application may be applied to various communication systems, for example: a Global System for Mobile communications (GSM) System, a Code Division Multiple Access (CDMA) System, a Wideband Code Division Multiple Access (WCDMA) System, a General Packet Radio Service (GPRS), an LTE System, an LTE Frequency Division Duplex (FDD) System, an LTE Time Division Duplex (TDD), a Universal Mobile Telecommunications System (UMTS), a Worldwide Interoperability for Microwave Access (WiMAX) communication System, or a 5G System.

Illustratively, the embodiment of the present application is applied to a communication system 100 as 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 referred to as a communication terminal, a terminal). Network device 110 may provide communication coverage for a particular geographic area and may communicate with terminal devices located within that coverage area. Optionally, the Network device 110 may be a Base Transceiver Station (BTS) in a GSM system or a CDMA system, a Base Station (NodeB, NB) in a WCDMA system, an evolved Node B (eNB or eNodeB) in an LTE system, or a wireless controller in a Cloud Radio Access Network (CRAN), or may be a Network device in a Mobile switching center, a relay Station, an Access point, a vehicle-mounted device, a wearable device, a hub, a switch, a bridge, a router, a Network-side device in a 5G Network, or a Network device in a Public Land Mobile Network (PLMN) for future evolution, or the like.

The communication system 100 further comprises at least one terminal device 120 located within the coverage area of the network device 110. As used herein, "terminal equipment" includes, but is not limited to, connections via wireline, such as Public Switched Telephone Network (PSTN), Digital Subscriber Line (DSL), Digital cable, direct cable connection; and/or another data connection/network; and/or via a Wireless interface, e.g., to a cellular Network, a Wireless Local Area Network (WLAN), a digital television Network such as a DVB-H Network, a satellite Network, an AM-FM broadcast transmitter; and/or means of another terminal device arranged to receive/transmit communication signals; and/or Internet of Things (IoT) devices. A terminal device arranged to communicate over a wireless interface may be referred to as a "wireless communication terminal", "wireless terminal", or "mobile terminal". Examples of mobile terminals include, but are not limited to, satellite or cellular telephones; personal Communications Systems (PCS) terminals that may combine cellular radiotelephones with data processing, facsimile, and data Communications capabilities; PDAs that may include radiotelephones, pagers, internet/intranet access, Web browsers, notepads, calendars, and/or Global Positioning System (GPS) receivers; and conventional laptop and/or palmtop receivers or other electronic devices that include a radiotelephone transceiver. Terminal Equipment may refer to an access terminal, User Equipment (UE), subscriber unit, subscriber station, mobile station, remote terminal, mobile device, User terminal, wireless communication device, User agent, or User Equipment. An access terminal may be a cellular telephone, a cordless telephone, a Session Initiation Protocol (SIP) phone, a Wireless Local Loop (WLL) station, a Personal Digital Assistant (PDA), a handheld device having Wireless communication capabilities, a computing device or other processing device connected to a Wireless modem, a vehicle mounted device, a wearable device, a terminal device in a 5G network, or a terminal device in a future evolved PLMN, etc.

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

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

Fig. 2 exemplarily shows one network device and two terminal devices, and optionally, the communication system 100 may include a plurality of network devices and may include other numbers of terminal devices within the coverage of each network device, which is not limited in this embodiment of the present application.

Optionally, the communication system 100 may further include other network entities such as a network controller, a mobility management entity, and the like, which is not limited in this embodiment.

It should be understood that a device having a communication function in a network/system in the embodiments of the present application may be referred to as a communication device. Taking the communication system 100 shown in fig. 2 as an example, the communication device may include a network device 110 and a terminal device 120 having a communication function, and the network device 110 and the terminal device 120 may be the specific devices described above, which are not described herein again; the communication device may also include other devices in the communication system 100, such as other network entities, for example, a network controller, a mobility management entity, and the like, which is not limited in this embodiment.

As shown in fig. 3, an optional processing flow of the uplink retransmission processing method provided in the embodiment of the present application includes the following steps:

step S201, when receiving a first uplink grant sent by a target network device, a terminal device sends an indication message to a source network device; the indication information is used for indicating the processing aiming at the uplink retransmission.

In some embodiments, the indication information is used to indicate at least one of: the source network device stops scheduling uplink retransmission, the terminal device has emptied the HARQ buffer (buffer) corresponding to the source network device, and the terminal device has switched uplink transmission to the target network device. Therefore, 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, and the problem of power limitation of the terminal device can be alleviated.

In some embodiments, the first uplink grant may be a schedule sent by the target network device through a Random Access Response (RAR); the first uplink grant may also be a schedule sent by the target network device through a Contention resolution (Contention resolution) message. Wherein the scheduling of the target network device by the contention resolution message transmission at least comprises: a Physical Downlink Control Channel (PDCCH) scrambled by a Cell-Radio Network Temporary Identifier (C-RNTI); or, a PDCCH scrambled by using a Temporary Cell-Radio Network Temporary Identifier (TC-RNTI).

In some embodiments, the uplink retransmission processing method provided in this embodiment of the present application, in addition to executing step S201, 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 SDUs and the retransmitted PDCP SDUs 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 a PDCP SDU that is not the first transmission.

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

step S203, the terminal device clears the HARQ buffer corresponding to the source network device.

It is to be understood that, in the case of executing step S203, only step S201 may be executed, and step S201 and step S202 may also be executed.

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

In some embodiments, the HARQ buffer corresponding to the source network device is cleared in order to stop transmitting PDCP data PDUs. Since the RLC ACK/NACK feedback, ROHC feedback, and PDCP PDU are included in the MAC PDU, the terminal device still needs to retransmit the RLC ACK/NACK feedback and Robust Header Compression (ROHC) feedback to the source network device. Therefore, the terminal device clears the HARQ buffer corresponding to the source network device, and the PDCP PDU is not transmitted to the source network device any more, so that unnecessary uplink transmission aiming at the source network device is avoided, and the source network device is prevented from forwarding a data packet to the target network device. And, 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 embodiment of the present application further includes:

step S204, the terminal equipment sends a status report to the source network equipment.

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 is to be understood that in the case of performing step S204, only step S201 may be performed; at least one of step S202 and step S203 may be performed in addition to step S201.

The RLC layer entity is triggered by the terminal equipment and/or the PDCP layer entity is triggered by the terminal equipment to send the status report to the source network equipment, so that an uplink control signaling can be effectively provided for downlink data sending of the source network equipment, and further, the transmission interruption time of the downlink data of the source network equipment is not increased.

step S205, when receiving the scheduling for the new uplink transmission by 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 the new uplink transmission to the source network device.

It is to be understood that in the case of performing step S205, only step S201 may be performed; at least one of step S202, step S203, and step S204 may be performed in addition to step S201.

In some embodiments, before performing step S201, the method further comprises:

step S200, the terminal equipment receives the switching command sent by the source network equipment, and the terminal equipment initiates a random access process to a target cell corresponding to the target network equipment and successfully accesses the target cell.

In some embodiments, the terminal device is a terminal device in a connected state; the handover command may be an Enhanced Make Before Break (EMBB) handover command; the switching command may be a Dual Active Protocol Stack (DAPS) switching command; the handover command may include configuration information of the target cell.

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

It can be understood that after the terminal device is accessed to the target cell, the uplink retransmission between the terminal device and the source network device is stopped; however, a new upstream transmission is still made with the source network device.

It should be understood that, in the various embodiments of the present application, the sequence numbers of the above-mentioned processes do not mean the execution sequence, and the execution sequence of each process should be determined by its function and inherent logic, and should not constitute any limitation to the implementation process of the embodiments of the present application.

In order to implement the uplink retransmission processing method, an embodiment of the present application provides a terminal device, where a structure of the terminal device 300, as shown in fig. 4, includes:

a first receiving unit 301, configured to receive an uplink grant sent by a target network device;

a first sending unit 302, configured to send instruction information to a source network device when the first receiving unit receives a first uplink grant sent by the target network device; the indication information is used for indicating the processing aiming at the uplink retransmission.

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

the source network equipment stops scheduling uplink retransmission;

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 some embodiments, the terminal device further comprises:

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 comprises:

a second processing unit 304, configured to ignore the scheduling for uplink retransmission if the terminal device receives the scheduling for 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 comprises:

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

and/or ROHC feedback sent by the PDCP entity of the terminal equipment.

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

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

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

PDCCH scrambled by C-RNTI; or, a PDCCH scrambled with TC-RNTI.

In order to implement the uplink retransmission processing method, an embodiment of the present application provides a source network device, where a structure of the source network device 400, as shown in fig. 5, includes:

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

the source network equipment stops scheduling uplink retransmission;

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 comprises:

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

and/or ROHC feedback sent by the PDCP entity of the terminal equipment.

In some embodiments, the source network device further comprises:

a second sending unit 402, 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.

The embodiment of the present application further provides a terminal device, which includes a processor and a memory, where the memory is used for storing a computer program that can be run on the processor, and when the processor is used for running the computer program, the processor is configured to execute the steps of the uplink retransmission processing method executed by the terminal device.

The embodiment of the present application further provides a source network device, which includes a processor and a memory for storing a computer program capable of running on the processor, where the processor is configured to execute the steps of the uplink retransmission processing method executed by the network device when running the computer program.

Fig. 6 is a schematic diagram of a hardware composition structure of electronic devices (a terminal device and a source network device) according to an embodiment of the present application, where 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 by a bus system 705. It is understood that the bus system 705 is used to enable communications among the components. The bus system 705 includes a power bus, a control bus, and a status signal bus in addition to a data bus. But for clarity of illustration the various busses are labeled in figure 6 as the bus system 705.

It will be appreciated that the memory 702 can be either volatile memory or nonvolatile memory, and can include both volatile and nonvolatile memory. The non-volatile Memory may be ROM, Programmable Read-Only Memory (PROM), Erasable Programmable Read-Only Memory (EPROM), Electrically Erasable Programmable Read-Only Memory (EEPROM), magnetic random access Memory (FRAM), Flash Memory (Flash Memory), magnetic surface Memory, optical Disc, or Compact Disc Read-Only Memory (CD-ROM); the magnetic surface storage may be disk storage or tape storage. Volatile Memory can be Random Access Memory (RAM), which acts as external cache Memory. By way of illustration and not limitation, many forms of RAM are available, such as Static Random Access Memory (SRAM), Synchronous Static Random Access Memory (SSRAM), Dynamic Random Access Memory (DRAM), Synchronous Dynamic Random Access Memory (SDRAM), Double Data Rate Synchronous Dynamic Random Access Memory (DDRSDRAM), Enhanced Synchronous Dynamic Random Access Memory (ESDRAM), Enhanced Synchronous Dynamic Random Access Memory (Enhanced DRAM), Synchronous Dynamic Random Access Memory (SLDRAM), Direct Memory (DRmb Access), and Random Access Memory (DRAM). The memory 702 described in embodiments herein is intended to comprise, without being limited to, these and any other suitable types of memory.

The memory 702 in the embodiments of the present application is used to store various types of data to support the operation of the electronic device 700. Examples of such data include: any computer program for operating on electronic device 700, such as application 7022. A program for implementing the methods according to embodiments of the present application may be included in application 7022.

The method disclosed in the 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 having signal processing capabilities. In implementation, the steps of the above method may be implemented by integrated logic circuits of hardware or instructions in the form of software in the processor 701. The Processor 701 may be a general purpose Processor, a Digital Signal Processor (DSP), or other programmable logic device, discrete gate or transistor logic device, discrete hardware components, or the like. The processor 701 may implement or perform the methods, steps, and logic blocks disclosed in the embodiments of the present application. A general purpose processor may be a microprocessor or any conventional processor or the like. The steps of the method disclosed in the embodiments of the present application may be directly implemented by a hardware decoding processor, or implemented by a combination of hardware and software modules in the decoding processor. The software modules may be located in a storage medium located in the memory 702, and the processor 701 may read the information in the memory 702 and perform the steps of the aforementioned methods in conjunction with its hardware.

In an exemplary embodiment, the electronic Device 700 may be implemented by one or more Application Specific Integrated Circuits (ASICs), DSPs, Programmable Logic Devices (PLDs), Complex Programmable Logic Devices (CPLDs), FPGAs, general purpose processors, controllers, MCUs, MPUs, or other electronic components for performing the foregoing methods.

The embodiment of the application also provides a computer storage medium for storing the executable program.

Optionally, the computer storage medium may be applied to the terminal device in the embodiment of the present application, and the executable program enables the computer to execute corresponding processes in each method in the embodiment of the present application, which is not described herein again for brevity.

Optionally, the computer storage medium may be applied to the source network device in the embodiment of the present application, and the executable program enables the computer to execute corresponding processes in each method in the embodiment of the present application, which is not described herein again for brevity.

The embodiment of the present application provides a chip, including: and the processor is used for calling and running the computer program from the memory so that the equipment provided with the chip executes the uplink retransmission processing method executed by the terminal equipment or the uplink retransmission processing method executed by the source network equipment.

An embodiment of the present application provides a computer program product, which includes computer program instructions, where the computer program instructions enable a computer to execute an uplink retransmission processing method executed by the terminal device or an uplink retransmission processing method executed by the source network device.

An embodiment of the present application provides a computer program, where the computer program enables a computer to execute an uplink retransmission processing method executed by the terminal device or an uplink retransmission processing method executed by the source network device.

The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the application. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.

These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

The above description is only exemplary of the present application and should not be taken as limiting the scope of the present application, as any modifications, equivalents, improvements, etc. made within the spirit and principle of the present application should be included in the scope of the present application.

Claims

An uplink retransmission processing method, the method comprising:

the method comprises the steps that when terminal equipment receives a first uplink authorization sent by target network equipment, the terminal equipment sends indication information to source network equipment; the indication information is used for indicating the processing aiming at the uplink retransmission.
The method of claim 1, wherein the indication information is used to indicate at least one of:

the source network equipment stops scheduling uplink retransmission;

the terminal device has emptied the hybrid automatic repeat request buffer HARQ corresponding to the source network device;

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:

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

and when the terminal equipment receives the scheduling of the source network equipment for the uplink retransmission, the terminal equipment ignores the scheduling for the uplink retransmission.
The method of any of claims 1 to 4, wherein the method further comprises:

and the terminal equipment sends a status report to the source network equipment.
The method of claim 5, wherein the status report comprises:

RLC acknowledgement ACK/negative acknowledgement NACK feedback sent by a radio link layer control protocol RLC entity of the terminal equipment;

and/or, the robust header compression ROHC feedback sent by the packet data convergence protocol PDCP entity of the terminal device.
The method of any of claims 1 to 6, wherein the method further comprises:

and the terminal equipment sends the new uplink transmission when receiving the scheduling of the source network equipment for the new uplink transmission.
The method according to any of claims 1 to 7, wherein the first uplink grant comprises at least:

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

a physical downlink control channel PDCCH scrambled by using a cell radio network temporary identifier C-RNTI;

or the PDCCH scrambled by the temporary cell radio network temporary identity TC-RNTI is utilized.
An uplink retransmission processing method, the method comprising:

and the source network equipment receives indication information sent by the terminal equipment, wherein the indication information is used for indicating the processing aiming at the uplink retransmission.
The method of claim 10, wherein the indication information indicates at least one of:

the source network equipment stops scheduling uplink retransmission;

the terminal device has emptied the hybrid automatic repeat request buffer HARQ corresponding to the source network device;

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

and the source network equipment receives the status report sent by the terminal equipment.
The method of claim 12, wherein the status report comprises:

RLC acknowledgement ACK/negative acknowledgement NACK feedback sent by a radio link layer control protocol RLC entity of the terminal equipment;

and/or, robust header compression (ROHC) feedback sent by a Packet Data Convergence Protocol (PDCP) entity of the terminal equipment.
The method of any 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 of claim 14, wherein the method further comprises:

and the source network equipment receives the new uplink transmission sent by the terminal equipment.
A terminal device, the terminal device comprising:

a first receiving unit, configured to receive an uplink grant sent by a target network device;

a first sending unit, configured to send instruction information to a source network device when the first receiving unit receives a first uplink grant sent by the target network device; the indication information is used for indicating the processing aiming at the uplink retransmission.
The terminal device of claim 16, wherein the indication information is used to indicate at least one of:

the source network equipment stops scheduling uplink retransmission;

the terminal device has emptied the hybrid automatic repeat request buffer HARQ corresponding to the source network device;

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

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

a second processing unit, 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 of claims 16 to 19, wherein the first transmitting unit is further configured to transmit a status report to the source network device.
The terminal device of claim 20, wherein the status report comprises:

RLC acknowledgement ACK/negative acknowledgement NACK feedback sent by a radio link layer control protocol RLC entity of the terminal equipment;

and/or, the robust header compression ROHC feedback sent by the packet data convergence protocol PDCP entity of the terminal device.
The terminal device according to any of claims 16 to 21, wherein the first sending unit is further configured to send a new uplink transmission if the terminal device receives a schedule of the source network device for the new uplink transmission.
The terminal device according to any of claims 16 to 22, wherein the first uplink grant comprises at least:

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

a physical downlink control channel PDCCH scrambled by using a cell radio network temporary identifier C-RNTI;

or the PDCCH scrambled by the temporary cell radio network temporary identity TC-RNTI is utilized.
A source network device, the source network device comprising:

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

the source network equipment stops scheduling uplink retransmission;

the terminal device has emptied the hybrid automatic repeat request buffer HARQ corresponding to the source network device;

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 transmitted by the terminal device.
The source network device of claim 27, wherein the status report comprises:

RLC acknowledgement ACK/negative acknowledgement NACK feedback sent by a radio link layer control protocol RLC entity of the terminal equipment;

and/or, the robust header compression ROHC feedback sent by the packet data convergence protocol PDCP entity of the terminal device.
The source network device of any of claims 26 to 28, wherein the source network device further comprises:

a second transmitting unit configured to transmit a schedule for a new uplink transmission to the terminal device.
The source network device of claim 29, wherein the second receiving unit is further configured to receive the new uplink transmission sent by the terminal device.
A terminal device comprising a processor and a memory for storing a computer program capable of running on the processor, wherein,

the processor is configured to execute the steps of the uplink retransmission processing method according to any one of claims 1 to 9 when the computer program is executed.
A source network device comprising a processor and a memory for storing a computer program capable of running on the processor, wherein,

the processor is configured to execute the steps of the uplink retransmission processing method according to any one of claims 10 to 15 when the computer program is executed.
A computer storage medium storing an executable program, which when executed by a processor, implements the uplink retransmission processing method according to any one of claims 1 to 9.
A computer storage medium storing an executable program, which 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 for calling and running a computer program from a memory so that a device on which the chip is installed performs the method of any of claims 1 to 9, or the method of any of claims 10 to 15.
A computer program product comprising computer program instructions to cause a computer to perform the method of any of claims 1 to 9, or the method of any of claims 10 to 15.
A computer program for causing a computer to perform the method of any one of claims 1 to 9, or the method of any one of claims 10 to 15.