CN113692755B - Uplink retransmission processing method, electronic equipment and storage medium - Google Patents
Uplink retransmission processing method, electronic equipment and storage medium Download PDFInfo
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- CN113692755B CN113692755B CN201980095350.1A CN201980095350A CN113692755B CN 113692755 B CN113692755 B CN 113692755B CN 201980095350 A CN201980095350 A CN 201980095350A CN 113692755 B CN113692755 B CN 113692755B
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Abstract
The application discloses an uplink retransmission processing method, which comprises the following steps: the terminal equipment sends indication information to the source network equipment under the condition that the terminal equipment receives a first uplink authorization sent by the target network equipment; the indication information is used for indicating the processing for uplink retransmission. The application also discloses another uplink retransmission processing method, electronic equipment and a storage medium.
Description
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 is randomly accessed to a target cell, after receiving a first Uplink (UL) Grant sent by a target network device corresponding to the target cell, how the terminal device processes uplink retransmission corresponding to a source network device is a problem to be solved.
Disclosure of Invention
In order to solve the technical problems, embodiments of the present application provide an uplink retransmission processing method, an electronic device, and a storage medium, which can determine processing of uplink retransmission corresponding to a source network device by a terminal device.
In a first aspect, an embodiment of the present application provides an uplink retransmission processing method, including: the terminal equipment sends indication information to the source network equipment under the condition that the terminal equipment receives a first uplink authorization sent by the target network equipment; the indication information is used for indicating the processing for uplink retransmission.
In a second aspect, an embodiment of the present application provides an uplink retransmission processing method, including: the source network device receives indication information sent by the terminal device, wherein the indication information is used for indicating the processing for uplink retransmission.
In a third aspect, an embodiment of the present application provides a terminal device, including: the first receiving unit is configured to receive uplink authorization sent by the target network equipment;
the first sending unit is configured to send indication information to the source network equipment under the condition that the first receiving unit receives a first uplink authorization sent by the target network equipment; the indication information is used for indicating the processing for uplink retransmission.
In a fourth aspect, an embodiment of the present application provides a source network device, including: and the second receiving unit is configured to receive indication information sent by the terminal equipment, wherein the indication information is used for indicating the 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 capable of running on the processor, where the processor is configured to execute steps of an uplink retransmission processing method executed by the terminal device when running the computer program.
In a sixth aspect, an embodiment of the present application provides a source network device, including a processor and a memory configured to store a computer program capable of running on the processor, where the processor is configured to execute steps of an uplink retransmission processing method executed by the source network device when running the computer program.
In a seventh aspect, an embodiment of the present application provides a computer storage medium storing an executable program, where the executable program when executed by a processor implements the uplink retransmission processing method executed by the terminal device.
In an eighth aspect, an embodiment of the present application provides a computer storage medium storing an executable program, where the executable program when executed by a processor 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: and the processor is used for calling and running the computer program from the memory, so that the device provided with the chip executes the uplink retransmission processing method executed by the terminal device or the uplink retransmission processing method executed by the source network device.
In a tenth aspect, an embodiment of the present application provides a computer program product, including computer program instructions, where the computer program instructions cause 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 causes a computer to execute an uplink retransmission processing method executed by the above-mentioned terminal device or an uplink retransmission processing method executed by the above-mentioned source network device.
The uplink retransmission processing method provided by the embodiment of the application comprises the following steps: the terminal equipment sends indication information to the source network equipment under the condition that the terminal equipment receives a first uplink authorization sent by the target network equipment; the indication information is used for indicating 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.
Drawings
FIG. 1 is a schematic flow chart of cell switching in an NR system of the present application;
fig. 2 is a schematic 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 diagram of a composition structure of a terminal device according to an embodiment of the present application;
fig. 5 is a schematic diagram of a composition structure of a source network device according to an embodiment of the present application;
fig. 6 is a schematic diagram of a hardware composition structure of an electronic device according to an embodiment of the present application.
Detailed Description
So that the manner in which the features and techniques of the embodiments of the present application can be understood in more detail, a more particular description of the application, briefly summarized below, may be had by reference to the appended drawings, which are not intended to be limiting of the embodiments of the present application.
Before explaining the uplink retransmission processing method provided by the embodiment of the application in detail, a related art cell switching process and a processing method of cell switching after cell switching are briefly described.
Currently, the 3GPP international standards organization starts developing 5G with the pursuit of speed, delay, high speed mobility, energy efficiency, and diversity and complexity of future life services. The main application scenario of 5G is: enhanced mobile ultra-wideband (Enhance Mobile Broadband, emmbb), low latency high reliability communications (Ultra Reliable Low Latency Communications, URLLC), and large scale machine type communications (Massive Machine Type Communication, mctc).
embbs still target users to obtain multimedia content, services, and data, and their demand is growing very rapidly. On the other hand, since the eMBB may be deployed in different scenarios, such as indoor, urban, rural, etc., the capability and demand of the eMBB are also relatively different, so that detailed analysis must be performed in connection with a specific deployment scenario. Typical applications of URLLC include: industrial automation, electric power automation, remote medical operation (surgery), traffic safety guarantee and the like. Typical characteristics of mctc include: high connection density, small data volume, delay insensitive traffic, low cost and long service life of the module, etc.
Similar to the LTE system, the New Radio (NR) system supports a handover procedure of a connected terminal device. When a terminal device using a network service moves from one cell to another cell, or due to adjustment of radio transmission traffic load, active operation maintenance, equipment failure, etc., the system transfers the communication link between the terminal device and the original cell to the new cell, i.e., performs a handover procedure, in order to ensure continuity of communication and quality of service.
Taking an Xn interface switching process as an example, a cell switching process applicable to an LTE system and an NR system, as shown in fig. 1, is divided into the following three phases:
stage 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 performs: the terminal device immediately executes the switching process after receiving the switching command, i.e. the terminal device disconnects the source cell and connects with the target cell (e.g. executes random access, sends an RRC switching completion message to the target network device, etc.); and (5) state transition and data forwarding of a Secondary Node (SN).
Stage 3 (comprising steps 9 to 12), the handover is completed: the target cell performs Path switching (Path Switch) with (Acess and Mobility Management Function, AMF) and user plane functions (User Port Function, UPF) releasing the terminal device context of the source network device.
In 3GPP mobility enhancement study of LTE system and NR system, architecture for reducing connection interruption time when terminal equipment performs cell switching comprises the following two kinds of:
one is in the cell switching process, first add the target network equipment as the Secondary Node (SN); converting the target network equipment from SN to Master Node (MN) by 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 continuously maintains the connection with the source network equipment, and initiates random access to the target network equipment until the terminal equipment accesses to the target cell to finish releasing the source network equipment.
In the related art, when a random access procedure 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 a new packet data convergence protocol (Packet Data Convergence Protocol, PDCP) service data unit (Service Data Unit, SDU) transmission and unacknowledged PDCP SDU transmission to the target network device. However, the downlink transmission of the source network device is still ongoing, and uplink transmission associated with the downlink transmission by the source network device, such as hybrid automatic repeat request (Hybrid Automatic Repeat reQuest, HARQ) Acknowledgement (ACK)/Negative Acknowledgement (NACK), channel state information (Channel State Information, CSI) report (report), automatic repeat request (Automatic Repeat reQuest, ARQ) ACK/NACK, etc., still needs to be continued. Wherein, since both new PDCP SDUs and unacknowledged PDCP SDUs will be transmitted by the target network device, HARQ retransmissions for the uplink, such as physical uplink shared channel (Physical Uplink Shared Channel, PUSCH) retransmissions, do not need to be performed. Therefore, how to stop uplink retransmission, such as HARQ retransmission, for the source network device is a problem to be solved. Moreover, since the terminal device sends PUSCH to the source network device and the target network device simultaneously, the PUSCH may exceed the maximum power of the terminal device; therefore, by stopping the uplink retransmission to the source network device, the problem of power limitation of the terminal device can be alleviated.
Based on the above-mentioned problems, the present application provides an uplink retransmission processing method, and the uplink retransmission processing method of the embodiment of the present application can be applied to various communication systems, for example: global system for mobile communications (Global System of Mobile communication, GSM), code division multiple access (Code Division Multiple Access, CDMA), wideband code division multiple access (Wideband Code Division Multiple Access, WCDMA) systems, general packet radio service (General Packet Radio Service, GPRS), LTE systems, LTE frequency division duplex (Frequency Division Duplex, FDD) systems, LTE time division duplex (Time Division Duplex, TDD), universal mobile telecommunications system (Universal Mobile Telecommunication System, UMTS), worldwide interoperability for microwave access (Worldwide Interoperability for Microwave Access, wiMAX) communication systems, or 5G systems, etc.
Exemplary, a communication system 100 to which embodiments of the present application are applied 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 referred to as a communication terminal, terminal). Network device 110 may provide communication coverage for a particular geographic area and may communicate with terminal devices located within the coverage area. Alternatively, 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, an evolved base station (Evolutional Node B, eNB or eNodeB) in an LTE system, or a radio controller in a cloud radio access network (Cloud Radio Access Network, CRAN), or the network device may be a mobile switching center, a relay station, an access point, a vehicle 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 future evolved public land mobile network (Public Land Mobile Network, PLMN), etc.
The communication system 100 further comprises at least one terminal device 120 located within the coverage area of the network device 110. "terminal device" as used herein includes, but is not limited to, a connection via a wireline, such as via a public-switched telephone network (Public Switched Telephone Networks, PSTN), a digital subscriber line (Digital Subscriber Line, DSL), a digital cable, a direct cable connection; and/or another data connection/network; and/or via a wireless interface, e.g., for a cellular network, a wireless local area network (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 the other terminal device arranged to receive/transmit communication signals; and/or internet of things (Internet of Things, ioT) devices. Terminal devices arranged to communicate over a wireless interface may be referred to as "wireless communication terminals", "wireless terminals" or "mobile terminals". Examples of mobile terminals include, but are not limited to, satellites or cellular telephones; a personal communications system (Personal Communications System, PCS) terminal that may combine a cellular radiotelephone with data processing, facsimile and data communications capabilities; a PDA that can include a radiotelephone, pager, internet/intranet access, web browser, organizer, calendar, and/or a global positioning system (Global Positioning System, GPS) receiver; and conventional laptop and/or palmtop receivers or other electronic devices that include a radiotelephone transceiver. A terminal device 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 (Session Initiation Protocol, SIP) phone, a wireless local loop (Wireless Local Loop, WLL) station, a personal digital assistant (Personal Digital Assistant, PDA), a handheld device with wireless communication capabilities, a computing device or other processing device connected to a wireless modem, an in-vehicle device, a wearable device, a terminal device in a 5G network or a terminal device in a future evolved PLMN, etc.
Alternatively, direct terminal (D2D) communication may be performed between the terminal devices 120.
Alternatively, the 5G system or 5G network may also be referred to as a New Radio (NR) system or NR network.
Fig. 2 illustrates one network device and two terminal devices by way of example, and the communication system 100 may alternatively include multiple network devices and may include other numbers of terminal devices within the coverage area of each network device, which is not limited by the embodiments of the present application.
Optionally, the communication system 100 may further include a network controller, a mobility management entity, and other network entities, which are not limited by the embodiment of the present application.
It should be understood that a device having a communication function in a network/system according to an embodiment 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 the network device 110 and the terminal device 120 with communication functions, where 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 a network controller, a mobility management entity, and other network entities, which are not limited in this embodiment of the present application.
An optional processing flow 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, under the condition that a terminal device receives a first uplink authorization sent by a target network device, the terminal device sends indication information to a source network device; the indication information is used for indicating the processing for 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 empties an HARQ buffer corresponding to the source network device, and the terminal device switches 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 relieved.
In some embodiments, the first uplink grant may be a schedule sent by the target network device via a random access response (Random Access Response, RAR); the first uplink grant may also be a schedule of transmissions by the target network device via a contention resolution (Contention resolution) message. The scheduling of the target network device through the contention resolution message transmission at least comprises: a physical downlink control channel (Physical Downlink Control Channel, PDCCH) scrambled with a Cell radio network temporary identity (Cell-Radio Network Temporary Identifier, C-RNTI); alternatively, a scrambled PDCCH is utilized with a Temporary Cell radio network Temporary identifier (TC-RNTI).
In some embodiments, the uplink retransmission processing method provided by the embodiment of the present application further includes, in addition to executing step S201:
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 a PDCP SDU that is not first transmitted.
In some embodiments, the uplink retransmission processing method provided by the embodiment of the present application further includes:
step S203, the terminal device empties the HARQ buffer corresponding to the source network device.
It is understood that in the case of performing step S203, only step S201 may be performed, or step S201 and step S202 may be performed.
In some embodiments, in a case that the terminal device receives the scheduling of the source network device for uplink retransmission, the terminal device ignores the scheduling for uplink retransmission. For example, the source network device transmits a PDCCH (in which UL Grant is indicated) scheduling HARQ retransmission to the terminal device, and the terminal device ignores the UL Grant.
In some embodiments, the source network device clears the corresponding HARQ buffer to stop transmitting PDCP data PDUs. Since RLC ACK/NACK feedback, ROHC feedback, and PDCP PDU are included in the MAC PDU, the terminal device still needs to retransmit RLC ACK/NACK feedback and robustness header compression (Robust Header Compression, ROHC) feedback to the source network device. In this way, the terminal device empties the HARQ buffer corresponding to the source network device, and does not transmit PDCP PDU to the source network device, thereby avoiding unnecessary uplink transmission to the source network device and forwarding data packet to the target network device by the source network device. And, the uplink power and uplink radio resources of the terminal equipment can be saved by reducing the information carried by the MAC PDU.
Therefore, in some embodiments, the uplink retransmission processing method provided by the embodiment of the present application further includes:
in 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 (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 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 terminal equipment triggers the RLC layer entity and/or triggers the PDCP layer entity to send a status report to the source network equipment, so that uplink control signaling can be effectively provided for downlink data transmission of the source network equipment, and further the transmission interruption time of the downlink data of the source network equipment is not increased.
In some embodiments, the uplink retransmission processing method provided by the embodiment of the present application further includes:
in step S205, the terminal device sends the new uplink transmission when receiving the scheduling of the source network device for 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 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, 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 (Enhance Make Before Break, EMBB) handover command; the handoff command may be a dual active protocol stack (Dual Active Protocol Stack, DAPS) handoff 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 a random access procedure to the target cell.
It can be understood that, after the terminal device accesses to the target cell, the terminal device stops the uplink retransmission with the source network device; however, a new uplink transmission is still performed with the source network device.
It should be understood that, in various embodiments of the present application, the sequence numbers of the foregoing processes do not mean the order of execution, and the order of execution of the processes should be determined by the functions and internal logic thereof, and should not constitute any limitation on 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 composition 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 indication 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 for 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 equipment clears the HARQ buffer corresponding to the source network equipment;
the terminal device has switched the uplink transmission to the target network device.
In some embodiments, the terminal device further comprises:
and the first processing unit 303 is configured to empty the HARQ buffer corresponding to the source network device.
In some embodiments, the terminal device further comprises:
and the second processing unit 304 is configured to ignore the scheduling for uplink retransmission when 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 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 if the terminal device receives a schedule of the source network device for the new uplink transmission.
In some embodiments, the first uplink grant includes at least: scheduling of the target network device to send through the RAR, and/or scheduling of the target network device to send through the contention resolution message.
In some embodiments, the scheduling of the target network device for transmission by the contention resolution message includes at least:
PDCCH scrambled with C-RNTI; or, a PDCCH scrambled with a TC-RNTI.
In order to implement the uplink retransmission processing method, an embodiment of the present application provides a source network device, where a composition structure of the source network device 400 is shown in fig. 5, and includes:
the second receiving unit 401 is configured to receive indication information sent by the terminal device, where the indication information is used to indicate a process for 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 equipment clears the HARQ buffer corresponding to the source network equipment;
the terminal device has switched the uplink transmission to the target network device.
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 comprises:
a 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.
The embodiment of the application also provides the terminal equipment, which comprises a processor and a memory for storing a computer program capable of running on the processor, wherein the processor is used for executing the steps of the uplink retransmission processing method executed by the terminal equipment when the computer program runs.
The embodiment of the application also provides source network equipment, which comprises a processor and a memory for storing a computer program capable of running on the processor, wherein the processor is used for executing the steps of the uplink retransmission processing method executed by the network equipment when the computer program runs.
Fig. 6 is a schematic diagram of a hardware composition structure of an electronic device (a terminal device and a source network device) according to an embodiment of the present application, where an electronic device 700 includes: at least one processor 701, 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 appreciated that the bus system 705 is used to enable connected communications between these components. The bus system 705 includes a power bus, a control bus, and a status signal bus in addition to the data bus. But for clarity of illustration, the various buses are labeled as bus system 705 in fig. 6.
It is to be appreciated that the memory 702 can be either volatile memory or nonvolatile memory, and can include both volatile and nonvolatile memory. Wherein the nonvolatile Memory may be ROM, programmable read-Only Memory (PROM, programmable Read-Only Memory), erasable programmable read-Only Memory (EPROM, erasable Programmable Read-Only Memory), 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 compact disk read-Only Memory (CD-ROM, compact Disc Read-Only Memory); the magnetic surface memory may be a disk memory or a tape memory. The volatile memory may be random access memory (RAM, random Access Memory), which acts as external cache memory. By way of example, and not limitation, 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), dynamic random access 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 (ddr SDRAM, double Data Rate Synchronous Dynamic Random Access Memory), enhanced synchronous dynamic random access memory (ESDRAM, enhanced Synchronous Dynamic Random Access Memory), synchronous link 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 embodiments of the present application is intended to comprise, without being limited to, these and any other suitable types of memory.
The memory 702 in embodiments of the 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 the electronic device 700, such as application 7022. A program for implementing the method of the embodiment of the present application may be contained in the application program 7022.
The method disclosed in the above embodiment 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 performed by integrated logic circuits of hardware in the processor 701 or by instructions in the form of software. The processor 701 may be a general purpose processor, a digital signal processor (DSP, digital Signal Processor), 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 embodiments of the present application. The general purpose processor may be a microprocessor or any conventional processor or the like. The steps of the method disclosed in the embodiment of the application can be directly embodied in the hardware of the decoding processor or can be implemented by combining hardware and software modules in the decoding processor. The software modules may be located in a storage medium in a memory 702. The processor 701 reads information in the memory 702 and, in combination with its hardware, performs the steps of the method as described above.
In an exemplary embodiment, the electronic device 700 can be implemented by one or more application specific integrated circuits (ASIC, application Specific Integrated Circuit), DSP, programmable logic device (PLD, programmable Logic Device), complex programmable logic device (CPLD, complex Programmable Logic Device), FPGA, general purpose processor, controller, MCU, MPU, or other electronic components for performing the aforementioned 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 makes the computer execute the corresponding flow in each method in the embodiment of the present application, which is not described herein 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 causes a computer to execute corresponding flows in the methods in the embodiments of the present application, which are not described herein for brevity.
The embodiment of the application provides a chip, which comprises: and the processor is used for calling and running the computer program from the memory, so that the device provided with the chip executes the uplink retransmission processing method executed by the terminal device or the uplink retransmission processing method executed by the source network device.
The embodiment of the application provides a computer program product, which comprises computer program instructions, wherein the computer program instructions enable a computer to execute an uplink retransmission processing method executed by the terminal equipment or an uplink retransmission processing method executed by the source network equipment.
The embodiment of the application provides a computer program, which enables a computer to execute an uplink retransmission processing method executed by the terminal equipment or an uplink retransmission processing method executed by the source network equipment.
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 flowchart illustrations and/or block diagrams, and combinations of flows and/or blocks in the flowchart illustrations 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 not intended to limit the scope of the application, but is intended to cover any modifications, equivalents, and improvements within the spirit and principles of the application.
Claims (27)
1. An uplink retransmission processing method, the method comprising:
the terminal equipment sends indication information to the source network equipment under the condition that the terminal equipment receives a first uplink authorization sent by the target network equipment; the indication information is used for indicating that the terminal equipment has emptied the hybrid automatic repeat request buffer (HARQ buffer) corresponding to the source network equipment;
the terminal equipment sends a status report to the source network equipment; wherein the status report includes:
RLC acknowledgement ACK/negative acknowledgement NACK feedback sent by the radio link layer control protocol RLC entity of the terminal device; and/or the robustness header compression ROHC feedback sent by the packet data convergence protocol PDCP entity of the terminal equipment.
2. The method of claim 1, wherein the indication information is further used to indicate at least one of:
the source network device stops scheduling uplink retransmission;
the terminal device has switched the uplink transmission to the target network device.
3. The method according to claim 1 or 2, wherein the method further comprises:
and the terminal equipment empties the HARQ buffer corresponding to the source network equipment.
4. A method according to any one of claims 1 to 3, wherein the method further comprises:
and under the condition that the terminal equipment receives the scheduling of the source network equipment for uplink retransmission, the terminal equipment ignores the scheduling for uplink retransmission.
5. The method of any one of claims 1 to 4, wherein the method further comprises:
and the terminal equipment sends the new uplink transmission under the condition that the terminal equipment receives the scheduling of the source network equipment for the new uplink transmission.
6. The method according to any one of claims 1 to 5, wherein the first uplink grant comprises at least:
and the target network equipment responds to the scheduling of RAR transmission through random access, and/or the target network equipment sends scheduling through contention resolution information.
7. The method of claim 6, wherein the scheduling of the target network device for transmission via a contention resolution message comprises at least:
a physical downlink control channel PDCCH scrambled by using a cell radio network temporary identifier C-RNTI;
or, the scrambled PDCCH is temporarily identified by using the temporary cell radio network.
8. An uplink retransmission processing method, the method comprising:
the method comprises the steps that a source network device receives indication information sent by a terminal device, wherein the indication information is used for indicating that the terminal device has emptied a hybrid automatic repeat request buffer (HARQ buffer) corresponding to the source network device;
the source network equipment receives a status report sent by the terminal equipment; wherein the status report includes:
RLC acknowledgement ACK/negative acknowledgement NACK feedback sent by the radio link layer control protocol RLC entity of the terminal device;
and/or the robustness header compression ROHC feedback sent by the packet data convergence protocol PDCP entity of the terminal equipment.
9. The method of claim 8, wherein the indication information is further used to indicate at least one of:
the source network device stops scheduling uplink retransmission;
the terminal device has switched the uplink transmission to the target network device.
10. The method according to claim 8 or 9, wherein the method further comprises:
and the source network equipment sends a schedule for new uplink transmission to the terminal equipment.
11. The method of claim 10, wherein the method further comprises:
and the source network equipment receives the new uplink transmission sent by the terminal equipment.
12. A terminal device, the terminal device comprising:
the first receiving unit is configured to receive uplink authorization sent by the target network equipment;
the first sending unit is configured to send indication information to the source network equipment under the condition that the first receiving unit receives a first uplink authorization sent by the target network equipment; the indication information is used for indicating that the terminal equipment has emptied the hybrid automatic repeat request buffer (HARQ buffer) corresponding to the source network equipment;
the first sending unit is further configured to send a status report to the source network device; the status report includes:
RLC acknowledgement ACK/negative acknowledgement NACK feedback sent by the radio link layer control protocol RLC entity of the terminal device;
and/or the robustness header compression ROHC feedback sent by the packet data convergence protocol PDCP entity of the terminal equipment.
13. The terminal device of claim 12, wherein the indication information is further used to indicate at least one of:
the source network device stops scheduling uplink retransmission;
the terminal device has switched the uplink transmission to the target network device.
14. The terminal device according to claim 12 or 13, wherein the terminal device further comprises:
and the first processing unit is configured to empty the HARQ buffer corresponding to the source network equipment.
15. The terminal device according to any of claims 12 to 14, wherein the terminal device further comprises:
and the second processing unit is configured to ignore the scheduling for uplink retransmission when the terminal equipment receives the scheduling for uplink retransmission of the source network equipment.
16. The terminal device according to any of claims 12 to 15, 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.
17. The terminal device according to any of claims 12 to 16, wherein the first uplink grant comprises at least:
and the target network equipment responds to the scheduling of RAR transmission through random access, and/or the target network equipment sends scheduling through contention resolution information.
18. The terminal device of claim 17, wherein the scheduling of the target network device for transmission via a contention resolution message comprises at least:
a physical downlink control channel PDCCH scrambled by using a cell radio network temporary identifier C-RNTI;
or, the scrambled PDCCH is temporarily identified by using the temporary cell radio network.
19. A source network device, the source network device comprising:
the second receiving unit is configured to receive indication information sent by the terminal equipment, wherein the indication information is used for indicating that the terminal equipment is emptied the hybrid automatic repeat request buffer (HARQ buffer) corresponding to the source network equipment;
the second receiving unit is further configured to receive a status report sent by the terminal device; wherein the status report includes:
RLC acknowledgement ACK/negative acknowledgement NACK feedback sent by the radio link layer control protocol RLC entity of the terminal device;
and/or the robustness header compression ROHC feedback sent by the packet data convergence protocol PDCP entity of the terminal equipment.
20. The source network device of claim 19, wherein the indication information is further used to indicate at least one of:
the source network device stops scheduling uplink retransmission;
the terminal device has switched the uplink transmission to the target network device.
21. The source network device of claim 19 or 20, wherein the source network device further comprises:
and the second sending unit is configured to send the scheduling for the new uplink transmission to the terminal equipment.
22. The source network device of claim 21, wherein the second receiving unit is further configured to receive the new uplink transmission sent by the terminal device.
23. 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 7 when the computer program is executed.
24. 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 8 to 11 when the computer program is run.
25. 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 7.
26. 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 8 to 11.
27. A chip, comprising: a processor for calling and running a computer program from a memory, causing a device on which the chip is mounted to perform the method of any one of claims 1 to 7 or the method of any one of claims 8 to 11.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/CN2019/106261 WO2021051284A1 (en) | 2019-09-17 | 2019-09-17 | Up line retransmission processing method, electronic device and storage medium |
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| Publication Number | Publication Date |
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| CN113692755A CN113692755A (en) | 2021-11-23 |
| CN113692755B true CN113692755B (en) | 2023-10-13 |
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| CN116156555A (en) * | 2021-11-15 | 2023-05-23 | 中国移动通信有限公司研究院 | Data transmission method, device, communication equipment and storage medium |
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| WO2021051284A1 (en) | 2021-03-25 |
| CN113692755A (en) | 2021-11-23 |
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