WO2023065303A1

WO2023065303A1 - Control method, device, and storage medium

Info

Publication number: WO2023065303A1
Application number: PCT/CN2021/125697
Authority: WO
Inventors: 林雪; 胡奕; 付喆
Original assignee: Oppo广东移动通信有限公司
Priority date: 2021-10-22
Filing date: 2021-10-22
Publication date: 2023-04-27
Also published as: CN117616801A

Abstract

The present application discloses a control method, a terminal device, and a storage medium. In the process of configured grant small data transmission (CG-SDT), the terminal device completes first uplink data transmission by using a first CG resource or a first DG resource, and starts a first timer; and during running of the first timer, the terminal device monitors a physical downlink control channel (PDCCH) scrambled by a first radio network temporary identifier (RNTI), the first RNTI being an RNTI configured for the CG-SDT process.

Description

A control method, device and storage medium

technical field

The present application relates to mobile communication technology, in particular to a control method, device and storage medium.

Background technique

In the fifth generation (5th generation, 5G) new radio (New Radio, NR) system, the radio resource control (Radio Resource Control, RRC) state is divided into three types, namely: RRC idle state (RRC_IDLE), RRC inactive state (RRC_INACTIVE), RRC connected state (RRC_CONNECTED). Among them, the RRC_INACTIVE state is a new state introduced by the 5G system from the perspective of energy saving. For the terminal equipment (User Equipment, UE) in the RRC_INACTIVE state, the radio bearer and all radio resources will be released, but the UE side and the base station side retain the UE access context. , in order to quickly restore the RRC connection, the network usually keeps the UE with infrequent data transmission in the RRC_INACTIVE state. Before the 16th release (Release-16, Rel-16), the UE in RRC_INACTIVE does not support data transmission. When the initiation (Mobile Original, MO) or reception (Mobile Terminated, MT) data arrives, the UE needs to restore the connection. After the data transmission is completed, it is released to the RRC_INACTIVE state. For UEs with small amount of data and low transmission frequency, such a transmission mechanism will cause unnecessary power consumption and signaling overhead. Therefore, Rel-17 set up a project to carry out research on Small Data Transmission (SDT) under RRC_INACTIVE. The project goals mainly have two directions: uplink small data transmission based on random Uplink small data transmission with pre-configured resources, but the control process after uplink small data transmission based on pre-configured resources is not clearly defined.

Contents of the invention

The embodiment of the present application provides a control method, device, and storage medium, based on a feasible timer mechanism, to control the physical downlink control channel (Physical Downlink Control) during the SDT (CG-SDT) process through the configuration of authorized (Configured Grant, CG) resources. Channel, PDCCH) monitoring.

The technical scheme of the embodiment of the application is realized in this way:

The control method provided in the embodiment of this application includes:

In the CG-SDT process, the terminal device uses the first CG resource or the first DG resource to complete the first uplink data transmission, and starts the first timer;

During the running of the first timer, the terminal device monitors a PDCCH scrambled by a first radio network temporary identifier (Radio Network Temporary Identifier, RNTI); the first RNTI is the RNTI configured for the CG-SDT process .

The terminal equipment provided in the embodiment of this application includes:

The first starting unit is configured to use the first CG resource or the first DG resource to complete the first uplink data transmission during the CG-SDT process, and start the first timer;

The monitoring unit is configured to monitor the physical downlink control channel PDCCH scrambled by the first wireless network temporary identifier RNTI during the running period of the first timer; the first RNTI is the RNTI configured for the CG-SDT process.

The terminal device provided in the embodiment of the present application includes a processor and a memory. The memory is used to store computer programs, and the processor is used to invoke and run the computer programs stored in the memory to execute the above-mentioned control method.

The chip provided in the embodiment of the present application is used to implement the above control method.

Specifically, the chip includes: a processor, configured to call and run a computer program from the memory, so that the device installed with the chip executes the above-mentioned control method.

The computer-readable storage medium provided by the embodiment of the present application is used for storing a computer program, and the computer program causes the computer to execute the above-mentioned control method.

The computer program product provided by the embodiments of the present application includes computer program instructions, and the computer program instructions cause the computer to execute the above control method.

The computer program provided by the embodiment of the present application, when running on a computer, enables the computer to execute the above-mentioned control method.

Through the above technical solution, the monitoring of the PDCCH in the CG-SDT process is controlled by starting and running the first timer, thereby controlling the monitoring of the PDCCH in the CG-SDT process based on a feasible timer mechanism.

Description of drawings

FIG. 1 is a schematic diagram of an optional composition structure of a communication system provided by an embodiment of the present application;

FIG. 2 is a schematic flow diagram of EDT in LTE provided by an embodiment of the present application;

FIG. 3 is a schematic flow diagram of PUR-based data transmission in LTE provided by an embodiment of the present application;

FIG. 4 is an optional schematic flowchart of a control method provided in an embodiment of the present application;

FIG. 5A is an optional schematic diagram of the timer operation mechanism provided by the embodiment of the present application;

FIG. 5B is an optional schematic diagram of the timer operation mechanism provided by the embodiment of the present application;

FIG. 6 is an optional schematic diagram of the timer operation mechanism provided by the embodiment of the present application;

FIG. 7A is an optional schematic diagram of the timer operation mechanism provided by the embodiment of the present application;

FIG. 7B is an optional schematic diagram of the timer operation mechanism provided by the embodiment of the present application;

FIG. 7C is an optional schematic diagram of the timer operation mechanism provided by the embodiment of the present application;

FIG. 7D is an optional schematic diagram of the timer operation mechanism provided by the embodiment of the present application;

FIG. 8 is an optional schematic diagram of the timer operation mechanism provided by the embodiment of the present application;

FIG. 9 is an optional schematic diagram of the timer operation mechanism provided by the embodiment of the present application;

FIG. 10 is an optional schematic diagram of the timer operation mechanism provided by the embodiment of the present application;

FIG. 11 is an optional schematic diagram of the timer operation mechanism provided by the embodiment of the present application;

FIG. 12 is an optional schematic diagram of the timer operation mechanism provided by the embodiment of the present application;

FIG. 13 is an optional schematic diagram of the timer operation mechanism provided by the embodiment of the present application;

FIG. 14 is an optional schematic diagram of the timer operation mechanism provided by the embodiment of the present application;

FIG. 15 is a schematic diagram of an optional composition structure of a terminal device provided in an embodiment of the present application;

Fig. 16 is a schematic structural diagram of a communication device provided by an embodiment of the present application;

Fig. 17 is a schematic structural diagram of a chip provided by an embodiment of the present application;

Fig. 18 is a schematic block diagram of a communication system provided by an embodiment of the present application.

Detailed ways

The technical solutions in the embodiments of the present application will be described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, but not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of this application.

FIG. 1 is a schematic diagram of an application scenario of an embodiment of the present application.

As shown in FIG. 1 , a communication system 100 may include a terminal device 110 and a network device 120 . The network device 120 may communicate with the terminal device 110 through an air interface. Multi-service transmission is supported between the terminal device 110 and the network device 120 .

It should be understood that the embodiment of the present application is only described by using the communication system 100 as an example, but the embodiment of the present application is not limited thereto. That is to say, the technical solutions of the embodiments of the present application can be applied to various communication systems, such as: Long Term Evolution (Long Term Evolution, LTE) system, LTE Time Division Duplex (Time Division Duplex, TDD), Universal Mobile Communication System (Universal Mobile Telecommunication System, UMTS), Internet of Things (Internet of Things, IoT) system, Narrow Band Internet of Things (NB-IoT) system, enhanced Machine-Type Communications (eMTC) system, 5G communication system (also known as New Radio (NR) communication system), or future communication systems, etc.

In the communication system 100 shown in FIG. 1 , the network device 120 may be an access network device that communicates with the terminal device 110 . The access network device can provide communication coverage for a specific geographical area, and can communicate with terminal devices 110 (such as UEs) located in the coverage area.

The network device 120 may be an evolved base station (Evolutional Node B, eNB or eNodeB) in a Long Term Evolution (Long Term Evolution, LTE) system, or a Next Generation Radio Access Network (NG RAN) device, Either a base station (gNB) in the NR system, or a wireless controller in a cloud radio access network (Cloud Radio Access Network, CRAN), or the network device 120 can be a relay station, an access point, a vehicle-mounted device, a wearable Devices, hubs, switches, bridges, routers, or network devices in the future evolution of the Public Land Mobile Network (Public Land Mobile Network, PLMN), etc.

The terminal device 110 may be any terminal device, including but not limited to a terminal device connected to the network device 120 or other terminal devices by wire or wirelessly.

For example, the terminal device 110 may refer to an access terminal, UE, subscriber unit, subscriber station, mobile station, mobile station, remote station, remote terminal, mobile device, user terminal, terminal, wireless communication device, user agent, or user device . Access terminals can be cellular phones, cordless phones, Session Initiation Protocol (SIP) phones, IoT devices, satellite handheld terminals, Wireless Local Loop (WLL) stations, Personal Digital Assistant , PDA), handheld devices with wireless communication functions, computing devices or other processing devices connected to wireless modems, vehicle-mounted devices, wearable devices, terminal devices in 5G networks or terminal devices in future evolution networks, etc.

The terminal device 110 can be used for device-to-device (Device to Device, D2D) communication.

The wireless communication system 100 may also include a core network device 130 that communicates with the base station. The core network device 130 may be a 5G core network (5G Core, 5GC) device, for example, Access and Mobility Management Function (Access and Mobility Management Function , AMF), and for example, authentication server function (Authentication Server Function, AUSF), and for example, user plane function (User Plane Function, UPF), and for example, session management function (Session Management Function, SMF). Optionally, the core network device 130 may also be a packet core evolution (Evolved Packet Core, EPC) device of the LTE network, for example, a data gateway (Session Management Function+Core Packet Gateway, SMF+PGW- C) equipment. It should be understood that SMF+PGW-C can realize the functions of SMF and PGW-C at the same time. In the process of network evolution, the above-mentioned core network equipment may be called by other names, or a new network entity may be formed by dividing functions of the core network, which is not limited in this embodiment of the present application.

Various functional units in the communication system 100 may also establish a connection through a next generation network (next generation, NG) interface to implement communication.

For example, the terminal device establishes an air interface connection with the access network device through the Uu interface to transmit user plane data and control plane signaling; the terminal device can establish a control plane signaling connection with the AMF through the NG interface 1 (N1 for short); the access Network equipment such as the next generation wireless access base station (gNB), can establish a user plane data connection with UPF through NG interface 3 (abbreviated as N3); access network equipment can establish control plane signaling with AMF through NG interface 2 (abbreviated as N2) connection; UPF can establish a control plane signaling connection with SMF through NG interface 4 (abbreviated as N4); UPF can exchange user plane data with the data network through NG interface 6 (abbreviated as N6); AMF can communicate with SMF through NG interface 11 (abbreviated as N11) The SMF establishes a control plane signaling connection; the SMF may establish a control plane signaling connection with the PCF through an NG interface 7 (N7 for short).

Figure 1 exemplarily shows a base station, a core network device, and two terminal devices. Optionally, the wireless communication system 100 may include multiple base station devices and each base station may include other numbers of terminals within the coverage area. The device is not limited in the embodiment of this application.

It should be noted that FIG. 1 is only an illustration of a system applicable to this application, and of course, the method shown in the embodiment of this application may also be applicable to other systems. Furthermore, the terms "system" and "network" are often used interchangeably herein. The term "and/or" in this article is just an association relationship describing associated objects, which means that there can be three relationships, for example, A and/or B can mean: A exists alone, A and B exist simultaneously, and there exists alone B these three situations. In addition, the character "/" in this article generally indicates that the contextual objects are an "or" relationship. It should also be understood that the "indication" mentioned in the embodiments of the present application may be a direct indication, may also be an indirect indication, and may also mean that there is an association relationship. For example, A indicates B, which can mean that A directly indicates B, for example, B can be obtained through A; it can also indicate that A indirectly indicates B, for example, A indicates C, and B can be obtained through C; it can also indicate that there is an association between A and B relation. It should also be understood that the "correspondence" mentioned in the embodiments of the present application may mean that there is a direct correspondence or an indirect correspondence between the two, or that there is an association between the two, or that it indicates and is indicated. , configuration and configured relationship. It should also be understood that the "predefined" or "predefined rules" mentioned in the embodiments of this application can be used by pre-saving corresponding codes, tables or other It is implemented by indicating related information, and this application does not limit the specific implementation. For example, pre-defined may refer to defined in the protocol. It should also be understood that in the embodiment of the present application, the "protocol" may refer to a standard protocol in the communication field, for example, it may include the LTE protocol, the NR protocol, and related protocols applied to future communication systems, and this application does not limit this .

In order to facilitate the understanding of the technical solutions of the embodiments of the present application, the related technologies of the embodiments of the present application are described below. The following related technologies can be combined with the technical solutions of the embodiments of the present application as optional solutions, and all of them belong to the embodiments of the present application. protected range.

CG

There are two methods for uplink scheduling of terminal equipment, one is dynamic scheduling, that is, dynamic grant (DG), and the other is CG. The DG usually allocates resources through downlink control signaling (Downlink Control Information, DCI). CG includes two types, namely, configuration grant type 1 (configured grant Type 1 is CG Type 1) and configuration grant type 2 (configured grant Type 2 is CG Type 2). Among them, configure the time-frequency resource location of authorization type 1, the cycle of CG resources, the number of Hybrid Automatic Repeat Request (HARQ) processes using CG resources, the modulation and coding strategy (Modulation and Coding Scheme, MCS), etc. The parameter is provided by the network device to the terminal device through RRC signaling, and is stored by the terminal as a configured uplink grant. After the RRC signaling is configured with configuration authorization type 1, the terminal can use this configuration authorization for uplink data transmission ; Parameters such as the cycle of CG resources of configuration authorization type 2, the number of HARQ processes using CG resources, and which MCS table to use are provided by the network device to the terminal device through RRC signaling, but the time-frequency resource location, MCS index value, etc. are determined by The network device provides the terminal with the DCI, and the terminal stores it as a configuration uplink grant, that is, the configuration grant type 2 is activated or deactivated by the physical layer or layer 1 signaling control.

Early Data Transmission (Early Data Transmission, EDT)

In LTE, EDT, that is, small data transmission, has been introduced. During this process, the UE may always remain in the idle (idle) state or suspend (suspend) state or inactive (inactive) state to complete the uplink and/or downlink Transmission of small data packets.

For the EDT process, the UE completes the transmission of the small data packet without entering the connected state. In terms of configuration, the network will configure a maximum transport block (Transport Block, TB) size (size) that the current network allows transmission on the System Information Block (SIB) 2, and the UE judges the amount of data to be transmitted. If If the amount of data to be transmitted is less than the maximum TB size, the UE can initiate EDT transmission; otherwise, the UE uses the normal connection establishment process and enters the connected state to transmit data.

If the cell where the UE initiates Uplink (UP)-EDT is the same as the last serving cell, the base station can directly submit the uplink data to the core network after receiving the connection recovery request and uplink data sent by the UE, and the uplink EDT data The transmission process is shown in Figure 2, including:

S201, the UE sends a random access preamble (Random Access Preamble) to the eNB;

S202. The eNB sends a random access response (Random Access Response) to the UE.

S203. The UE sends an RRC connection resume request (RRC Connretion resume request) to the eNB.

The RRC Connretion resume request carries the resume ID (resume ID), resume case (resume case), authentication token (shortResumeMAC-I) and uplink data (Uplink Data).

S204. The eNB sends a UE context resume request (Context resume request) to the MME.

S205. The bearer is modified between the MME and the S-GW.

S206. The MME sends a text resume response (Context resume response) to the UE.

S207. The UE sends uplink data to the S-GW.

S208. The S-GW sends downlink data to the base station.

Wherein, S207 is optional.

S209, the eNB and the MME perform a suspension process, and the bearer is modified between the MME and the S-GW.

S210. The eNB sends an RRC connection release notification (RRC Connction Release) to the UE.

RRC Connction Release carries the release case (Release case), resume ID, NCC and downlink data.

Preconfigured Uplink Resource (PUR)

In LTE Release 16, for the mobile IoT scenarios of narrowband Internet of Things (Narrow-Band Internet of Things, NB-IoT) and LTE-based global Internet of Things (LTE enhanced MTO, eMTC), it is introduced to use PUR data in idle state method of transmission. The PUR is only valid in the currently configured cell, that is, when the UE detects a cell change and initiates random access in the new cell, the UE needs to release the PUR configured in the original cell. The PUR transmission process is similar to the LTE UP-EDT shown in Figure 2, except that the process of sending the preamble to obtain the timing advance (Timing Advance, TA) and uplink scheduling grant (UL grant) is omitted.

The air interface process based on PUR transmission is shown in Figure 3, and the following steps are included before S203 of the air interface process shown in Figure 2:

S200. The UE has valid PUR resources.

R17SDT

In the 5G NR system, there are three RRC states, namely: RRC_IDLE, RRC_INACTIVE and RRC_CONNECTED. Among them, the RRC_INACTIVE state is a new state introduced by the 5G system from the perspective of energy saving. For the UE in the RRC_INACTIVE state, the radio bearer and all radio resources will be released, but the UE side and the base station side retain the UE access context to quickly restore the RRC connection. The network usually keeps UEs with infrequent data transmission in the RRC_INACTIVE state. Before Rel-16, the UE in the RRC_INACTIVE state does not support data transmission. When the MO or MT data arrives, the UE needs to restore the connection, and then release to the INACTIVE state after the data transmission is completed. For UEs with small amount of data and low transmission frequency, such a transmission mechanism will cause unnecessary power consumption and signaling overhead. Therefore, Rel-17 set up a project to carry out research on SDT under RRC_INACTIVE. The project goals mainly have two directions: uplink small data transmission based on random access process (two-step/four-step) and uplink small data transmission based on pre-configured resources (such as CG type1) Uplink small data transmission.

For small data transmission based on pre-configured resources, the 3GPP RAN2 working group reached the following conclusions after discussion:

1. For CG-SDT, subsequent (sbusquent) data transmission can use CG resources or DG resources (for example: dynamic authorization of C-RNTI addressed to UE), and the detailed information of C-RNTI can be compared with the previous C-RNTI The same can also be explicitly configured by the network and can be discussed in Phase 3.

2. The UE starts a window (window) for the CG-SDT after the CG/DG transmission. Further research (For Further Study, FFS) is to design a new timer or reuse an existing timer.

3. CG-SDT dynamic authorization supports retransmission

4. The uplink CG-SDT supports configuring multiple HARQ processes.

It can be seen that the subsequent (subsequent) data transmission in the CG-SDT process can use both CG resources and DG resources, and can support the configuration of multiple HARQ processes. Among them, in the CG-SDT process, the terminal will start a window every time after using the CG resource or DG resource to complete data transmission, but the behavior of the terminal device in the window and after the window times out has not yet been clarified.

In order to facilitate understanding of the technical solutions of the embodiments of the present application, the technical solutions of the present application are described in detail below through specific examples. As optional solutions, the above related technologies may be combined with the technical solutions of the embodiments of the present application in any combination, and all of them belong to the protection scope of the embodiments of the present application. The embodiment of the present application includes at least part of the following content.

An optional processing flow of the control method provided in the embodiment of the present application, as shown in FIG. 4 , includes the following steps:

S401. During the CG-SDT process, the terminal device uses the first CG resource or the first DG resource to complete the first uplink data transmission, and starts a first timer.

Optionally, the HARQ process used by the first CG resource or the first DG resource is the HARQ process configured for the CG resource. In the embodiment of the present application, when using CG resources to transmit the first uplink data, the CG resource that transmits the first uplink data is called the first CG resource; when using the DG resource to transmit the first uplink data, the DG resource that transmits the first uplink data is called The resources are called first DG resources.

In this embodiment of the present application, the first uplink data is any uplink data sent by the terminal device to the network device using the CG resource or DG resource during the CG-SDT process, and the terminal device uses the first CG resource or the first DG resource to send the network device The first uplink data sent may be newly transmitted data or retransmitted data.

Optionally, when the last data transmitted by the HARQ process that transmits the first uplink data is not the first uplink data, the currently sent first uplink data is newly transmitted data, and the process of sending the first uplink data is newly transmitted.

Optionally, when the last data transmitted by the HARQ process that transmits the first uplink data is the first uplink data, the currently sent first uplink data is retransmission data, and the process of sending the first uplink data is retransmission.

In this embodiment of the present application, the first timer may be a newly introduced timer, or may be a CG timer (CGT).

Optionally, the start timing of the first timer includes but is not limited to one of the following:

At opportunity A1, at the start symbol of the first CG resource or the first DG resource;

At opportunity A2, at the last symbol of the first CG resource or the first DG resource;

Opportunity A3, the first PDCCH receiving opportunity after the first uplink data transmission is completed;

Timing A4, after a period of time after the first uplink data transmission is completed.

S402. During the running period of the first timer, the terminal device monitors the PDCCH scrambled by the first RNTI.

In this embodiment of the present application, the first RNTI is the RNTI configured for the CG-SDT process. Optionally, the first RNTI includes at least one of the following: cell radio network temporary identifier (Cell Radio Network Temporary Identifier, C-RNTI), configuration scheduling RNTI (Configured Scheduling RNTI, CS-RNTI), or other configurations for CG-SDT One or more of the RNTIs.

Optionally, the length of the first timer may be dynamically configured by the network, or may be a predefined fixed length.

In the embodiment of the present application, the first timer is used for controlling the PDCCH, and the first timer may not be multiplexed or may be multiplexed for new transmission control.

For the scenario where the first timer is not reused for newly transmitted control

Taking the starting timing of the first timer as timing A4, the starting timing of the first timer includes one of the following:

Opportunity A41: after the fixed duration of the first uplink data transmission is completed;

Opportunity A42, the second timer times out.

When the start timing of the first timer is timing A41, the terminal device monitors the time after the first uplink data transmission is completed, and starts the first timer when the monitored duration reaches a fixed duration.

As shown in FIG. 5A , the terminal device completes the transmission of the first uplink data 501 at time t1, and starts the first timer at time t2, wherein the interval between time t1 and time t2 is a fixed duration T.

Optionally, the fixed duration is pre-scheduled or configured by the network device.

When the start timing of the first timer is timing A42, the terminal device completes the transmission of the first uplink data and starts the second timer, and starts the first timer when the second timer times out.

As shown in FIG. 5B , the terminal device completes the transmission of the first uplink data 501 at time t1, and starts the second timer at time t3, and starts the first timer at time t4 when the second timer times out at time t4.

In some embodiments, the start timing of the second timer includes one of the following:

Opportunity B1, at the first symbol position of the first CG resource or the first DG resource;

Opportunity B2, at the last symbol position of the first CG resource or the first DG resource;

Opportunity B3, the receiving opportunity of the first PDCCH after the first uplink data transmission is completed.

In some embodiments, the configuration manner of the length of the second timer includes one of the following:

Dynamic configuration of network devices;

Predefined fixed length.

In some embodiments, during the running of the second timer, the terminal device does not monitor the PDCCH scrambled by the first RNTI.

After completing the first uplink data, the terminal device starts the second timer, and during the running of the second timer, does not monitor the PDCCH scrambled by the first RNTI, and starts the first timer after the second timer expires, and During the running of the first timer, monitor the PDCCH scrambled by the first RNTI.

As shown in FIG. 5B , the monitoring of the PDCCH is not performed between time t1 and time t4 when the second timer is running, and the monitoring of the PDCCH is started after the second timer is started.

After the terminal device transmits an uplink data transmission, it takes a certain period of time from the transmission of the uplink data to the reception of the uplink data by the network device and decoding, and then feeds back the PDCCH to the terminal. Therefore, during this period, even if the UE keeps monitoring, Also, the PDCCH sent by the network cannot be received. Therefore, the power consumption of the terminal device can be saved by controlling the non-monitoring of the PDCCH by the second timer, thereby achieving the purpose of power saving.

In the embodiment of the present application, one HARQ process may maintain a first timer and a second timer, or multiple HARQ processes may maintain a first timer and a second timer.

Taking a HARQ process as an example that can maintain a first timer and a second timer, different HARQs correspond to different first timers and second timers. In an example, the HARQ process used by the first CG resource includes: HARQ process 1, HARQ process 2, and HARQ process 3, wherein HARQ process 1 maintains the first timer A and the second timer A, and HARQ process 2 maintains the first timer A. A timer B and a second timer B, the HARQ process 3 maintains the first timer C and the second timer C.

Taking multiple HARQ processes maintaining a first timer and a second timer as an example, different HARQs correspond to the same first timer and the same second timer. In an example, the HARQ process used by the first CG resource includes: HARQ process 1, HARQ process 2, and HARQ process 3, wherein, HARQ process 1, HARQ process 2, and HARQ process 3 jointly maintain the first timer D and the second timer D.

For the case where a HARQ process maintains a first timer and a second timer, the processing performed by the terminal device also includes:

In some embodiments, the first timer corresponds to the first HARQ process, and during the running of the first timer, the terminal device does not use the second CG resource for data transmission, and the second CG The resource corresponds to the first HARQ process.

When the first timer corresponding to a HARQ process is running, the terminal device does not use the second CG resource using the HARQ process to transmit data.

In some embodiments, the terminal device stops the first timer after receiving the new transmission or retransmission scheduling for the first HARQ process, and performs the second uplink based on the new transmission or retransmission scheduling New transmission of data or retransmission of the first uplink data.

After receiving the new transmission scheduling or retransmission scheduling for the first HARQ process, the terminal device performs new transmission of the second uplink data or retransmission of the first uplink data based on the received new transmission scheduling or retransmission scheduling. At this time, Stop the first timer maintained by the running first HARQ process.

In an example, after receiving the new transmission schedule for the first HARQ process, the terminal device performs new transmission of the second uplink data based on the received new transmission schedule.

In an example, the terminal device receives the retransmission schedule for the first HARQ process, and retransmits the first uplink data based on the received retransmission schedule.

Optionally, the terminal device uses the second DG resource of the first HARQ process to perform new transmission of the second uplink data or retransmission of the first uplink data, where the second DG resource is the new transmission scheduling or retransmission of the network device Scheduling dynamically schedules resources for terminal devices.

Optionally, the terminal device performs new transmission of the second uplink data or retransmission of the first uplink data based on the second DG resource, and starts a first timer. During the running of the first timer, the terminal device monitors the first RNTI plus interfering PDCCH.

In some embodiments, the terminal device stops the first timer after receiving a first downlink feedback indication (Downlink Feedback Information, DFI) indicating that the data is received correctly or a second DFI indicating that the data is not received correctly, and perform new transmission of the second uplink data or retransmission of the first uplink data based on the first DFI or the second DFI.

The terminal device receives the indication of the first DFI or the second DFI, then performs new transmission of the second uplink data or retransmission of the first uplink data based on the received first DFI or second DFI, and stops the first HARQ process maintenance. First timer.

In an example, after receiving the first DFI, the terminal device does not perform new transmission of the second uplink data based on the received first DFI.

In an example, the terminal device receives the second DFI, and retransmits the first uplink data based on the received second DFI.

Optionally, the terminal device uses the second CG resource of the first HARQ process to perform new transmission of the second uplink data or retransmission of the first uplink data.

Optionally, the terminal device performs new transmission of the second uplink data or retransmission of the first uplink data based on the second CG resource, and starts a first timer, and the terminal device monitors the first RNTI plus interfering PDCCH. Wherein, the second CG resource is a CG resource different from the first CG resource using the first HARQ process.

In this embodiment of the present application, the first CG resource and the second CG resource are CG resources that use the same HARQ process and have different time-frequency positions. Here, when the network device configures the CG resource for the terminal device, it provides the terminal device with a group of CG resource information, and these CG resources appear according to a certain rule (for example: period). These CG resources will be bound to one or more HARQ process numbers. For example, the network device allocates 4 HARQ process numbers to the CG resources. Then, the CG resources with the same HARQ process will appear according to a certain time rule. Assuming that the ID of the HARQ process used by the first CG resource is 0, after a period of time, the CG resource using the HARQ process ID of 0 is used again for data transmission. At this time, the CG resource using the HARQ process ID of 0 is the first Two CG resources.

In this embodiment of the present application, the terminal device passively stops the first timer when it receives the following information sent by the network device: the new transmission or retransmission scheduling for the first HARQ process, the first timer indicating that the data is received correctly A DFI or a second DFI indicating that the data was not received correctly. When the terminal device does not receive the new transmission or retransmission scheduling for the first HARQ process, the first DFI indicating that the data is correctly received, and the second DFI indicating that the data is not correctly received during the running of the first timer, then do not The transmission of the uploaded data is until the first timer expires, and it is judged based on the retransmission mechanism 1 whether to retransmit the first uplink data.

In some embodiments, when the first timer expires or is not running, the terminal device performs new transmission of the second uplink data or retransmission of the first uplink data based on the second CG resource, the The second CG resource corresponds to the first HARQ process.

In the embodiment of this application, the retransmission mechanism of the terminal device includes:

Retransmission mechanism 1: Control the retransmission of the first uplink data based on the first transmission times.

When the retransmission mechanism is retransmission mechanism 1, the terminal device performs new transmission of the second uplink data or retransmission of the first uplink data based on the second CG resource, including:

The terminal device performs new transmission of the second uplink data or retransmission of the first uplink data based on the first transmission times. Wherein, the terminal device determines to perform retransmission of the first uplink data or new transmission of the second uplink data based on the first number of transmission times and the number of times of transmission or retransmission of the first uplink data.

Optionally, the first number of transmissions is the maximum number of transmissions of the first uplink data. At this time, the first number of uplink transmissions is used to compare with the number of transmissions of the first uplink data to determine whether to perform a new transmission of the second uplink data or Retransmission of the first uplink data. Wherein, the number of times of transmission of the first uplink data includes: the sum of the number of times of new transmission of the first uplink data 1 and the number of times of retransmission of the first uplink data.

Optionally, the first number of transmissions is the maximum number of retransmissions of the first uplink data. At this time, the first uplink transmission times are used for comparison with the retransmission times of the first uplink data, so as to determine whether to perform new transmission of the second uplink data or retransmission of the first uplink data.

Optionally, the first number of transmissions is used to limit the number of times the terminal device automatically sends the first uplink data, and does not apply to the number of first uplink data transmissions indicated by the network device through the following information: a new transmission for the first HARQ process Or retransmission scheduling, a first DFI indicating that data is received correctly, and a second DFI indicating that data is not received correctly.

In some embodiments, the terminal device performs new transmission of the second uplink data or retransmission of the first uplink data based on the first number of transmissions, including:

When the first count value is less than the first number of transmissions, or the first count value is less than the second number of transmissions, and the previous transmission of the first HARQ process occurs on the CG resource, the terminal device uses the second CG resource to perform the For the retransmission of the first uplink data, the second number of transmissions is equal to the first number of transmissions plus 1, and the first count value is plus 1; the first count value is used by the terminal device through the The number of times the first HARQ process transmits the first uplink data, and the second CG resource corresponds to the first HARQ process;

or when the first count value is equal to the first number of transmissions, or the first count value is equal to the second number of transmissions, the terminal device uses a second CG resource to perform new transmission of second uplink data, and The first count value is reset.

Here, the first count value is a count value (CONNTER) corresponding to the first HARQ process, and is used to count the number of times of automatic transmission of uplink data on the first HARQ. Wherein, different HARQ processes have corresponding CONNTERs.

The initial value of the first count value can be 0. When the terminal device automatically sends the first uplink data once, the first count value is increased by 1 until the first count value is equal to the first number of transmissions (the first number of transmissions is the first uplink data The maximum number of transmissions) or the first count value is equal to the first number of transmissions plus 1, that is, the second number of transmissions (the first number of transmissions is the maximum number of retransmissions of the first uplink data).

Here, when the first timer expires or is not running, and the first count value is less than the first number of transmissions or the second number of transmissions, the terminal device continues to retransmit the first uplink data, and after the first uplink data is retransmitted , the first count value is incremented by 1. When the first count value is equal to the first number of transmissions or the first count value is equal to the second number of transmissions, the number of retransmissions of the first uplink data reaches the maximum value, the terminal device performs a new transmission of the second uplink data, and the first count The value is reset to the initial value.

In this embodiment of the present application, when the terminal device is in the process of executing retransmission mechanism 1 based on the first number of transmissions, if the terminal device receives the new transmission schedule or retransmission schedule for the first HARQ sent by the network device, or receives If the first DFI indicating that the data is correctly transmitted, stop the first timer and stop the retransmission mechanism 1; if the second DFI indicating that the data is not transmitted correctly is received from the network device, stop the running in advance based on the second DFI The first timer enters the next automatic retransmission. At this time, the terminal device retransmits the first uplink data, and adds 1 to the first count value.

In some embodiments, the configuration of the first number of transmission times is as follows:

Network device configuration.

In the case of maintaining a first timer and a second timer for multiple HARQ processes, the processing performed by the terminal device also includes:

In some embodiments, the terminal device uses the first CG resource or the first DG resource to complete the first uplink data transmission, and starts a third timer;

During the running of the third timer, the terminal device does not use the second CG resource to perform new transmission of the second uplink data, and the second CG resource corresponds to the first HARQ process.

Here, the HARQ process used by the first DG resource, that is, the first HARQ process is configured for the CG resource.

Optionally, the third timer is an existing CGT.

Optionally, the start timing of the third timer includes one of the following timings:

At the timing C1, at the start symbol of the first CG resource or the first DG resource;

At opportunity C2, at the last symbol of the first CG resource or the first DG resource;

Timing C3, the first PDCCH receiving opportunity after the first uplink data transmission is completed;

During the running period of the first timer and the running period of the third timer, the terminal device does not use the first HARQ process corresponding to the second CG resource to retransmit the first uplink data, and monitors the PDCCH scrambled by the first RNTI.

Optionally, the duration of the third timer is greater than the duration of the first timer.

Optionally, the duration of the third timer is greater than the duration of the second timer.

As shown in Figure 6, the terminal device completes the transmission of the first uplink data 501 at time t1, starts the third timer at time t4, and starts the first timer at time t5, and the time interval from t1 to t5 is based on a fixed duration or a second The duration of the timer. During the running period of the first timer, the terminal device monitors the PDCCH scrambled by the first RNTI, and during the running period of the third timer, the terminal device does not perform new transmission of the second uplink data.

In some embodiments, during the running of the third timer, if the terminal device receives a retransmission schedule or a new transmission schedule for the first HARQ process, the third timer is restarted.

During the running of the third timer, the terminal device receives the new transmission scheduling for the first HARQ process, then performs the new transmission of the second uplink data based on the second DG resource of the new transmission scheduling, and restarts the third timer to avoid automatic Start a new transmission of other uplink data to be transmitted.

In some embodiments, during the running of the third timer, the terminal device receives a retransmission schedule or a new transmission schedule for the first HARQ process, and stops the first timer.

During the running of the third timer, if the terminal receives the retransmission scheduling, it stops the first timer, and uses the first HARQ process to retransmit the first uplink data based on the second DG resource scheduled by the retransmission scheduling. , the operation of the third timer is not affected.

During the running of the third timer, the terminal device receives the new transmission scheduling for the first HARQ process, stops the first timer, and uses the first HARQ process to perform the second uplink based on the second DG resource scheduled by the new transmission scheduling For the new transmission of data, at this time, the third timer can be stopped, and the third timer can also be restarted.

In some embodiments, during the running of the third timer, the terminal device receives the first DFI indicating that the data is correct or the second DFI indicating that the data is not received correctly, and stops the first timer.

In an example, the terminal device stops the first timer after receiving the first DFI indicating that the data is received correctly, and uses the second CG resource using the first HARQ process to perform new transmission of the second uplink data.

In an example, when receiving the second DFI indicating that the data is not received correctly, the terminal device stops the first timer, and uses the second CG resource using the first HARQ process to retransmit the first uplink data.

In the case that the terminal device controls the new transmission through the third timer, the retransmission mechanism operated by the terminal device may include:

Retransmission mechanism 2. When the first timer times out or stops running, the third timer is in the running state, and the previous transmission of the first HARQ process occurs on the CG resource, and the terminal device uses the second CG resources to retransmit the first uplink data, and the second CG resources correspond to the first HARQ process.

In retransmission mechanism 2, the terminal device controls the retransmission of the first uplink data through the first timer. During the operation of the third timer, the first timer times out or does not run, and the previous transmission of the first HARQ process occurs On the CG resource, retransmission of the first uplink data is performed.

The retransmission mechanism is retransmission mechanism 2. The operation mechanism of the timer in the terminal device can be shown in FIG. 7A. The terminal device starts the third timer at time t702 during the transmission of uplink data 701, and starts the third timer at a fixed duration or the first Time t703 after the second timer expires starts the first timer, the first timer expires at time t704, and the terminal device monitors the PDCCH between time t703 and t704, when the first timer expires, the terminal device performs uplink data 701 , wherein the third timer expires at time t705.

Retransmission mechanism 3. When the fourth timer expires, the third timer is in the running state, and the previous transmission of the first HARQ process occurs on the CG resource, the terminal device uses the second CG resource to perform For the retransmission of the first uplink data, the second CG resource corresponds to the first HARQ process, and the second CG resource corresponds to the first HARQ process.

In retransmission mechanism 3, the terminal device controls the retransmission of the first uplink data through the fourth timer. When the third timer is running, no new transmission of the second uplink data is possible. During the running of the third timer, the first The four-timer expires, and the first HARQ occurred on the CG resource before, and the terminal device retransmits the first uplink data.

Optionally, the fourth timer is a configured grant retransmission timer CG retransmission timer (CGRT).

The starting timing of the fourth timer includes at least one of the following:

At the timing D1, at the start symbol of the first CG resource or the first DG resource;

At opportunity D2, at the last symbol of the first CG resource or the first DG resource;

Timing D3, the first PDCCH receiving opportunity after the first uplink data transmission is completed.

In some embodiments, the terminal device completes the retransmission of the first uplink data, and restarts the fourth timer.

The retransmission mechanism is retransmission mechanism 3. The operation mechanism of the timer in the terminal device can be shown in FIG. Start the first timer at time t703 after the fixed duration or the second timer expires, the first timer expires at time t704, the terminal device monitors the PDCCH between time t703 and t704, and the fourth timer expires at t706, When the fourth timer expires, the terminal device retransmits the uplink data 701, wherein the third timer expires at time t705.

Here, the terminal device restarts the fourth timer every time it retransmits based on the timeout of the fourth timer.

In this embodiment of the present application, when the terminal device is in the process of executing retransmission mechanism 2 or 3, if the terminal device receives the new transmission schedule or retransmission schedule for the first HARQ sent by the network device, or receives a message indicating that the data is correctly transmitted If the first DFI of the network device is received, the first timer is stopped, and the retransmission mechanism 2 or 3 is stopped; if the second DFI sent by the network device indicating that the data is not transmitted correctly is received, the running first timer is stopped in advance based on the second DFI. timer or the fourth timer, enter the next automatic retransmission.

In some embodiments, the terminal device uses the third DG resource to complete the transmission of the second uplink data, and starts the second timer, and after the second timer expires, the terminal device starts the fifth timing The device, the HARQ process used by the third DG resource is different from the HARQ process used for the CG resource;

During the running of the fifth timer, the terminal device monitors the PDCCH scrambled by the first RNTI.

In the embodiment of the present application, the process used by the third DG resource is the third HARQ process, and the third HARQ process is not the HARQ process used by the CG resource.

At this time, multiple HARQ processes of CG resources maintain a second timer and a first timer. For processes other than CG resources, the maintained timer for monitoring PDCCH is the fifth timer, wherein different CG resources The HARQ process maintains the same second timer.

The start timing of the fifth timer is: timing E, the second timer expires after the third HARQ completes the transmission of the second uplink data.

Wherein, the length of the fifth timer is configured by the network, and the configuration of the fifth timer and the first timer may be the same or different.

For the scenario where the first timer is reused for the control of the new transmission

In some embodiments, during the running of the first timer, the terminal device does not perform new transmission of the second uplink data.

Optionally, the first timer is an extended CGT. At this time, the CGT is used not only for PDCCH monitoring, but also for new transmission control.

In some embodiments, a sixth timer is started; when the sixth timer expires and the first timer is running, the terminal device monitors the PDCCH scrambled by the first RNTI.

Here, the start timing of the sixth timer is one of the following:

At opportunity F1, at the start symbol of the first CG resource or the first DG resource;

Opportunity F2, the last symbol of the first CG resource or the first DG resource;

Opportunity F3, the first PDCCH receiving opportunity after the first uplink data transmission is completed.

Optionally, the start timing of the sixth timer is the same as that of the first timer, the terminal device starts the first timer and the sixth timer, and monitors the first timer when the sixth timer expires and the first timer is running. A PDCCH scrambled by an RNTI.

In some embodiments, the configuration manner of the length of the sixth timer includes one of the following:

Dynamic configuration of network devices;

Predefined fixed length.

Optionally, the terminal device may monitor the PDCCH scrambled by the first RNTI after starting the first timer for a fixed duration.

In some embodiments, during the running of the sixth timer, the terminal device does not monitor the PDCCH scrambled by the first RNTI.

The terminal device starts the first timer and the sixth timer. During the operation of the first timer and the sixth timer, the terminal device does not monitor the PDCCH scrambled by the first RNTI. After the sixth timer expires, it monitors all The PDCCH scrambled by the first RNTI. The sixth timer is used to control the terminal device not to monitor the PDCCH scrambled by the first RNTI.

In some embodiments, during the running of the first timer, if the terminal device receives a retransmission schedule or a new transmission schedule for the first HARQ process, the first timer is restarted.

During the running of the first timer, when the terminal receives the retransmission scheduling, the terminal restarts the first timer, and uses the first HARQ process to retransmit the first uplink data based on the second DG resource scheduled by the retransmission scheduling.

During the running of the first timer, the terminal device receives the new transmission scheduling for the first HARQ process, restarts the first timer, and uses the first HARQ process to perform the second uplink data transmission based on the DG resources scheduled by the new transmission scheduling new biography.

In some embodiments, the terminal device starts a seventh timer while starting the sixth timer; when the sixth timer expires, the seventh timer and the first timer run During this period, the terminal device monitors the PDCCH scrambled by the first RNTI.

Here, the duration of the first timer is longer than the duration of the sixth timer and the duration of the seventh timer, and the duration of the seventh timer is longer than that of the sixth timer. The terminal device controls not monitoring the PDCCH scrambled by the first RNTI based on the first timer and the sixth timer, and controls monitoring the PDCCH scrambled by the first RNTI based on the first timer and the seventh timer.

The start timing of the seventh timer is the same as the start timing of the sixth timer.

As shown in Figure 7C, the terminal device starts the first timer, the sixth timer and the seventh timer at time t702 during the transmission of uplink data 701, the sixth timer expires at time t707, and the seventh timer starts at time t707. Time t708 expires, the terminal device does not monitor the PDCCH from time t702 to time t707, and monitors the PDCCH from time t707 to time t708.

In FIG. 6C , the first timer and the sixth timer are started at t702 at the same time. In practical applications, the times of the first timer and the sixth timer may be different.

In the case that the terminal equipment uses the seventh timer to control the monitoring of the PDCCH, the retransmission mechanism of the terminal equipment is:

Retransmission mechanism 4: When the seventh timer times out or stops running, the terminal device uses a second CG resource to retransmit the first uplink data, and the second CG resource corresponds to the first HARQ process .

Here, the retransmission of the first uplink data is controlled based on the seventh timer, and when the first timer runs and the seventh timer times out, the terminal device retransmits the first uplink data.

As shown in FIG. 7D , in the timer operation mechanism shown in FIG. 7C , retransmission of uplink data 708 is performed after time t708 .

In some embodiments, the terminal device receives the first DFI indicating that the data is received correctly, stops the first timer and the seventh timer; or the terminal device receives the first DFI indicating that the data is not received correctly Second, DFI, stops the seventh timer.

The terminal device receives the indication of the first DFI or the second DFI, then performs new transmission of the second uplink data or retransmission of the first uplink data based on the received first DFI or second DFI, and based on the received new transmission scheduling Or before retransmission scheduling performs new transmission of the second uplink data or retransmission of the first uplink data, the seventh timer is stopped, and at this time, monitoring of the PDCCH scrambled by the first RNTI is not performed.

When the terminal device receives the first DFI, it also stops the first timer.

In an example, after receiving the first DFI, the terminal device performs new transmission of the second uplink data based on the received first DFI.

In this embodiment of the present application, when the terminal device is in the process of executing the retransmission mechanism 4, if the terminal device receives the new transmission schedule or retransmission schedule for the first HARQ sent by the network device, or receives the first HARQ transmission schedule indicating that the data is correctly transmitted One DFI, then stop the first timer and the seventh timer, and stop the retransmission mechanism 4; if receiving the second DFI indicating that the data is not transmitted correctly from the network device, then stop the running seven timers in advance based on the second DFI Timer, enter the next automatic retransmission.

In some embodiments, the terminal device uses the third DG resource to complete the transmission of the second uplink data, and starts the sixth timer; after the sixth timer expires, the terminal device starts the eighth timer The HARQ process used by the third DG resource is different from the HARQ process used for the CG resource; during the running of the eighth timer, the terminal device monitors the PDCCH scrambled by the first RNTI.

During the running of the eighth timer, the terminal device monitors the PDCCH scrambled by the first RNTI.

At this time, multiple HARQ processes of CG resources maintain a second timer and a first timer. For processes other than CG resources, the maintained timer for monitoring PDCCH is the eighth timer, wherein different CG resources The HARQ process maintains the same second timer.

The start timing of the eighth timer is: timing G, the second timer expires after the third HARQ completes the transmission of the second uplink data.

Wherein, the length of the eighth timer is configured by the network, and the eighth timer and the first timer may have the same configuration or different configurations.

In some embodiments, the terminal device in the radio resource control inactive state triggers the CG-SDT process when the first condition is met.

In some embodiments, the first condition includes at least one of the following:

All the data to be transmitted belong to radio bearers that are allowed to trigger SDT, and the transmission volume of the data to be transmitted is not greater than the data volume threshold configured by the network;

The reference signal received power (Reference Signal Receiving Power, RSRP) measurement result is greater than or equal to the RSRP threshold configured by the network;

There are CG resources on the selected carrier and synchronization signal block (:Synchronization Signal Block, SSB);

TA works.

Next, the control method provided by the embodiment of the present application will be further described.

Embodiment one

The first timer, the second timer, and the maximum number of retransmissions are introduced to control new transmission or retransmission and PDCCH monitoring during the CG-SDT process.

1. The UE in the RRC_INACTIVE state triggers the CG-SDT process when the first condition is met. The first condition includes at least:

a) All the data to be transmitted belongs to the radio bearers that are allowed to trigger SDT, and the amount of data to be transmitted is not greater than the data amount threshold configured by the network;

b), the RSRP measurement result is not less than the RSRP threshold configured by the network;

c), CG resources exist on the selected carrier and SSB;

d) The TA is valid, that is, the TAT is running and/or the variation of RSRP does not exceed the pre-configured threshold.

2. During the CG-SDT process, when the UE uses CG/DG resources to complete the first uplink data transmission (new transmission or retransmission), the behavior of the UE includes:

- starting the second timer, during which the second timer is running, the terminal does not monitor the PDCCH scrambled by the first RNTI, and when the second timer expires, the terminal starts the first timer. The length of the second timer can be dynamically configured by the network, or it can be a predefined fixed length.

- During the running period of the first timer, the terminal monitors the PDCCH scrambled by the first RNTI. The first RNTI is one or more of C-RNTI, CS-RNTI, or other RNTIs configured for CG-SDT.

Wherein, the terminal device may start the first timer after the second timer expires or after a fixed period of time after the transmission of the first uplink data is completed on the CG/DG resource.

Note: Each HARQ process maintains a first timer and a second timer.

3. For a certain HARQ process, during the running period of the first timer, if the terminal receives a new transmission or retransmission schedule for the HARQ process, the terminal stops the first timer.

As shown in Figure 8, the terminal device starts the first timer at time t801 and monitors the PDCCH scrambled by the first RNTI during the running of the first timer, and receives the new transmission or retransmission schedule sent by the network device at time t802 , then stop the first timer. Wherein, the terminal device uses the CG resource or the DG resource with the HARQ process ID of X to transmit the uplink data 803 .

4. For a certain HARQ process, during the running period of the second timer, the terminal cannot use the CG resource with the same HARQ process for data transmission.

As shown in FIG. 9 , the terminal device uses a CG resource or a DG resource with an HARQ process ID of X to transmit uplink data 803 . During the running of the second timer, the terminal device does not use the CG resource or DG resource with the HARQ process ID of X for uplink data transmission, and uses the CG resource or DG resource with the HARQ process ID of X after the second timer expires Perform uplink data transmission. Wherein, the uplink data 804 may be a retransmission of the uplink data 803, or may be a new transmission.

5. In addition, the network can configure the first number of transmissions for the terminal, which is used to indicate whether the terminal can use CG resources with the same HARQ process for automatic transmission.

Implementation method: if the network configures the first number of transmissions for the terminal, or the value of the first number of transmissions is greater than or equal to 1, the terminal initializes a counter for each HARQ process configured for CG, for example, COUNTER=0. After the terminal uses the CG resource to complete the new data transmission, update the COUNTER value: COUNTER=COUNTER+1, and start the first timer and the second timer according to the description in 2 at the same time:

- If the initial value < COUNTER < the first number of transmissions, when the first timer times out or is not running, the terminal uses the CG resources with the same HARQ process to perform automatic retransmission and update the COUNTER value at the same time;

- When COUNTER=the first number of transmissions or COUNTER=the first number of transmissions+1, when the first timer times out or is not running, the terminal uses the CG resource with the same HARQ process to perform new data transmission, and resets the counter at the same time.

As shown in Figure 10, the terminal device uses the CG resources of the HARQ process with ID X to perform the first transmission of uplink data 803. At this time, the COUNTER is 0, and after the first timer expires, use the The CG resource of the HARQ process performs the first retransmission of the uplink data 803, and the value of COUNTER is increased by 1 to 1. After the first timer times out again, use the CG resource of the HARQ process with ID X to retransmit the uplink data 803 Retransmit for the second time, and add 1 to the value of COUNTER to 2.

6. During the running of the first timer, if the terminal receives the DFI indicating that the data is received correctly, stop the first timer and reset the counter at the same time; if the terminal receives the DFI indicating that the data is not received correctly, then Stop the first timer.

Embodiment two

Expand the function of CGT, in addition to controlling new transmission and retransmission, while controlling PDCCH monitoring

c), CG resources exist on the selected carrier and SSB;

2. In the CG-SDT process, when the UE uses CG resources or DG resources to complete the first uplink data transmission (new transmission/retransmission), the HARQ process used by the CG resources or DG resources is the HARQ process configured for CG process, the behavior of the UE includes:

a) Start the first timer. During the running of the first timer, the terminal cannot use the CG resource with the same HARQ process as the CG resource used for the first uplink data transmission to perform new uplink data transmission. The first timer can is the CGT in the prior art.

b) Start the sixth timer. During the running period of the sixth timer, the terminal does not monitor the first RNTI scrambling PDCCH. When the second timer expires, the terminal monitors the first RNTI scrambling during the running period of the first timer The PDCCH. The length of the sixth timer can be dynamically configured by the network, or can be a predefined fixed length; the first RNTI is one or more of C-RNTI, CS-RNTI, or other RNTIs configured for CG-SDT.

As shown in Figure 11, the terminal device starts the first timer during the transmission of the first uplink data 1101, and monitors the PDCCH at time t1102 after the fixed duration or the sixth timer expires until time t1103, wherein, The first timer expires at time t1103, and after the first timer expires, the terminal device performs new transmission of uplink data 1104.

3. If the terminal receives the retransmission schedule sent by the network during the running period of the first timer, or if the terminal receives a new transmission schedule for the same HARQ process from the network side during the running period of the first timer, the terminal restarts the first timer device;

4. During the CG-SDT process, when the UE uses the DG resource to complete the second uplink data transmission (new transmission/retransmission), the HARQ process used by the DG resource is different from the HARQ process configured for the CG resource, and the behavior of the UE include:

-The terminal starts the sixth timer. During the running period of the sixth timer, the terminal does not monitor the PDCCH scrambled by the first RNTI; after the sixth timer expires, the terminal starts the eighth timer. During the running period of the eighth timer , the terminal monitors the PDCCH scrambled by the first RNTI. The length of the eighth timer is configured by the network.

5. The network can configure the terminal to use CG resources for automatic retransmission, and the implementation method is:

- Each time the terminal uses CG resources to complete data transmission, it starts the seventh timer and starts the sixth timer at the same time. During the running period of the sixth timer, the terminal does not monitor the PDCCH scrambled by the first RNTI; when the sixth timer After timeout, the terminal monitors the PDCCH scrambled by the first RNTI during the running of the seventh timer.

- When the seventh timer times out or stops running, but the first timer is running, the terminal uses the CG resource with the same HRAQ process to perform automatic retransmission.

8. During the operation of the seventh timer or the first timer, if the terminal receives the DFI indicating that the data is received correctly, stop the first timer and the seventh timer; if the terminal receives the DFI indicating that the data is not correct DFI is received, the seventh timer is stopped.

Embodiment three

The CGT is multiplexed, and the first timer and the second timer are introduced to control the PDCCH monitoring behavior and automatic retransmission after each transmission.

a) All the data to be transmitted belongs to the radio bearer that is allowed to trigger SDT, and the amount of data to be transmitted is not greater than the data amount threshold configured by the network;

c), CG resources exist on the selected carrier and SSB;

a) Start the third timer. During the operation of the third timer, the terminal cannot use the CG resource with the same HARQ process as the CG resource used for the first uplink data transmission to perform new uplink data transmission, that is, if the existing CGT in technology.

b) Start the second timer. During the running period of the second timer, the terminal does not monitor the first RNTI scrambled PDCCH. When the second timer expires, the terminal starts the first timer. During the running period of the first timer, The terminal monitors the PDCCH scrambled by the first RNTI. The length of the third timer can be dynamically configured by the network, and can also be a predefined fixed length. If the second timer is a fixed length, the terminal can start the first timer after a fixed length of time; the first RNTI is C- One or more of RNTI, CS-RNTI, or other RNTI configured for CG-SDT. The length of the first timer is configured by the network.

As shown in FIG. 12, the terminal device starts the third timer at time t1202 during the transmission of uplink data 1201, and monitors the PDCCH at time t1203 after the fixed duration or the second timer expires until time t1204, wherein , the first timer expires at time t1204, and the third timer expires at time t1205. After the third timer expires, the terminal device performs new transmission of uplink data 1206.

3. If the terminal receives the retransmission schedule sent by the network during the running period of the first timer, or if the terminal receives a new transmission schedule for the same HARQ process from the network side during the running period of the first timer, the terminal restarts the first timer If the third timer is running, stop the third timer.

4. In the CG-SDT process, when the UE uses DG resources to complete the second uplink data transmission (new transmission/retransmission), the HARQ process used by the DG is different from the HARQ process configured for the CG resource, and the behavior of the UE includes :

-The terminal starts the second timer, and during the running period of the second timer, the terminal does not monitor the PDCCH scrambled by the first RNTI; after the second timer expires, the terminal starts the fifth timer, and during the running period of the fifth timer , the terminal monitors the PDCCH scrambled by the first RNTI. The length of the fifth timer is configured by the network, and the configuration of the fifth timer and the first timer may be the same or different.

5. The network can configure an automatic retransmission mechanism for the terminal, and the implementation methods include:

- When the third timer expires or is not running, but the first timer is running, the terminal uses the CG resources with the same HARQ process to perform automatic retransmission.

As shown in Figure 13, the terminal device starts the third timer at time t1302 during the transmission of uplink data 1301, and starts the first timer at time t1303 after the fixed duration or the second timer expires, the first timer When the time t1304 expires, the terminal device monitors the PDCCH between time t1303 and t1304, wherein, during the period when the first timer expires and the third timer is running, the terminal device retransmits the uplink data 1301. After retransmission, start the first timer at time t1305, and monitor the PDCCH during the running of the first timer until the first timer expires at time t1306, wherein the third timer expires at time t1307.

Embodiment four

The CGT and CGRT are multiplexed, and the first timer and the second timer are introduced to control the PDCCH monitoring behavior of each transmission.

c), CG resources exist on the selected carrier and SSB;

2. In the CG-SDT process, when the UE uses CG resources or DG resources to complete the first uplink data transmission (new transmission/retransmission), the HARQ process used by the CG or DG is the HARQ process configured for CG, UE behavior includes:

b) Start the second timer. During the running period of the second timer, the terminal does not monitor the first RNTI scrambled PDCCH. When the second timer expires, the terminal starts the first timer. During the running period of the first timer, The terminal monitors the PDCCH scrambled by the first RNTI. The length of the second timer can be dynamically configured by the network, or can be a predefined fixed length. If the second timer is a fixed length, the terminal can start the third timer after a fixed length of time; the first RNTI is C- One or more of RNTI, CS-RNTI, or other RNTI configured for CG-SDT. The length of the first timer is configured by the network.

As shown in Figure 14, the terminal device starts the third timer at time t1402 during the transmission of uplink data 1401, and monitors the PDCCH at time t1403 after the fixed duration or the second timer expires until time t1404, wherein , the first timer expires at time t1404, and the third timer expires at time t1405. After the third timer expires, the terminal device performs new transmission of uplink data 1406.

3. If the terminal receives a retransmission schedule sent by the network during the running period of the third timer, or if the terminal receives a new transmission schedule for the same HARQ process from the network side during the running period of the third timer, the terminal restarts the third timer If the first timer is running, stop the first timer;

-The terminal starts the fourth timer every time it uses the CG resource to complete data transmission. When the fourth timer expires and the first timer is in the running state, the terminal can use the current CG resource to transmit the CG with the same HARQ process Resources are automatically retransmitted, that is, the fourth timer reuses the CG_Retransmission timer in the prior art.

The preferred embodiments of the present application have been described in detail above in conjunction with the accompanying drawings. However, the present application is not limited to the specific details in the above embodiments. Within the scope of the technical concept of the present application, various simple modifications can be made to the technical solutions of the present application. These simple modifications all belong to the protection scope of the present application. For example, the various specific technical features described in the above specific implementation manners can be combined in any suitable manner if there is no contradiction. Separately. As another example, any combination of various implementations of the present application can also be made, as long as they do not violate the idea of the present application, they should also be regarded as the content disclosed in the present application. For another example, on the premise of no conflict, the various embodiments described in this application and/or the technical features in each embodiment can be combined with the prior art arbitrarily, and the technical solutions obtained after the combination should also fall within the scope of this application. protected range.

It should also be understood that in the various method embodiments of the present application, the sequence numbers of the above-mentioned processes do not mean the order of execution, and the order of execution of the processes should be determined by their functions and internal logic, and should not be used in this application. The implementation of the examples constitutes no limitation. In addition, in this embodiment of the application, the terms "downlink", "uplink" and "sidelink" are used to indicate the transmission direction of signals or data, wherein "downlink" is used to indicate that the transmission direction of signals or data is sent from the station The first direction to the user equipment in the cell, "uplink" is used to indicate that the signal or data transmission direction is the second direction sent from the user equipment in the cell to the station, and "side line" is used to indicate that the signal or data transmission direction is A third direction sent from UE1 to UE2. For example, "downlink signal" indicates that the transmission direction of the signal is the first direction. In addition, in the embodiment of the present application, the term "and/or" is only an association relationship describing associated objects, indicating that there may be three relationships. Specifically, A and/or B may mean: A exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" in this article generally indicates that the contextual objects are an "or" relationship.

Fig. 15 is a schematic diagram of the structure and composition of the terminal device provided by the embodiment of the present application. As shown in Fig. 15, the terminal device 1500 includes:

The first starting unit 1501 is configured to use the first CG resource or the first DG resource to complete the first uplink data transmission during the CG-SDT process, and start the first timer;

The monitoring unit 1502 is configured to monitor the physical downlink control channel PDCCH scrambled by the first wireless network temporary identifier RNTI during the running of the first timer; the first RNTI is the RNTI configured for the CG-SDT process.

In some embodiments, the start timing of the first timer is one of the following:

After completing the fixed duration of the first uplink data transmission;

The second timer expires.

at the first symbol position of the first CG resource;

at the last symbol position of the first CG resource;

The receiving opportunity of the first PDCCH after the first uplink data transmission is completed.

Dynamic configuration of network devices;

Predefined fixed length.

In some embodiments, the monitoring unit 1502 is further configured to not monitor the PDCCH scrambled by the first RNTI during the running of the second timer.

In some embodiments, the terminal device 1500 also includes:

The first data transmission unit is configured to not use a second CG resource for data transmission during the running of the first timer, the second CG resource corresponds to the first HARQ process, and the first timer is connected to the first HARQ process. corresponding to the first HARQ process.

In some embodiments, the terminal device 1500 also includes:

The first control unit is configured to receive a new transmission or retransmission schedule for the first HARQ process, stop the first timer, and perform a new transmission of the second uplink data based on the new transmission or retransmission schedule transmission or retransmission of the first uplink data.

In some embodiments, the terminal device 1500 also includes:

The second control unit is configured to receive the first downlink feedback indication DFI indicating that the data is received correctly or the second DFI indicating that the data is not received correctly, stop the first timer, and based on the first DFI or the second DFI The second DFI performs new transmission of the second uplink data or retransmission of the first uplink data.

In some embodiments, the terminal device 1500 also includes:

The first retransmission unit is configured to perform new transmission of the second uplink data or retransmission of the first uplink data based on the second CG resource when the first timer expires or is not running.

In some embodiments, the first retransmission unit is further configured to:

Perform new transmission of the second uplink data or retransmission of the first uplink data based on the first number of transmission times.

In some embodiments, the first retransmission unit is further configured to:

When the first count value is less than the first number of transmissions, or the first count value is less than the second number of transmissions, and the previous transmission of the first HARQ process occurs on the CG resource, use the second CG resource to perform the first uplink For retransmission of data, the second number of transmissions is equal to the first number of transmissions plus 1, and the first count value is plus 1; the first count value is used by the terminal device through the first HARQ process The number of times of transmitting the first uplink data, the second CG resource corresponds to the first HARQ process;

or when the first count value is equal to the first number of transmissions, or when the first count value is equal to the second number of transmissions, use the second CG resource to perform new transmission of the second uplink data, and the first The counter value is reset.

Network device configuration.

In some embodiments, the terminal device 1500 also includes:

a second starting unit configured to use the first CG resource or the first DG resource to complete the first uplink data transmission, and start a third timer;

The new transmission unit is configured to not use the second CG resource to perform new transmission of the second uplink data during the running period of the third timer, and the second CG resource corresponds to the first HARQ process.

In some embodiments, the terminal device 1500 also includes:

The first restarting unit is configured to restart the third timer when a retransmission schedule or a new transmission schedule for the first HARQ process is received during the running of the third timer.

In some embodiments, the terminal device 1500 also includes:

The third control unit is configured to stop the first timer upon receiving a retransmission schedule or a new transmission schedule for the first HARQ process during the running of the third timer.

In some embodiments, the terminal device 1500 also includes:

The second retransmission unit is configured such that when the first timer times out or stops running, and the previous transmission of the first HARQ process occurs on the CG resource, the third timer is in the running state and uses the second CG resource Perform retransmission of the first uplink data, and the second CG resource corresponds to the first HARQ process.

In some embodiments, the terminal device 1500 also includes:

The third retransmission unit is configured to use the second CG resource to perform the retransmission when the fourth timer expires, the third timer is in the running state, and the previous transmission of the first HARQ process occurs on the CG resource. For the retransmission of the first uplink data, the second CG resource corresponds to the first HARQ process, and the second CG resource corresponds to the first HARQ process.

In some embodiments, the terminal device 1500 also includes:

The second restart unit is configured to restart the fourth timer after completing the retransmission of the first uplink data.

In some embodiments, the terminal device 1500 also includes:

a third starting unit, configured to use a third DG resource to complete the transmission of the second uplink data, and start the second timer;

The fourth starting unit is configured to start a fifth timer after the second timer expires, and the HARQ process used by the third DG resource is different from the HARQ process used for the CG resource;

The monitoring unit is configured to monitor the PDCCH scrambled by the first RNTI during the running of the fifth timer.

In some embodiments, the terminal device 1500 also includes:

The second data transmission unit is configured to not perform new transmission of the second uplink data while the first timer is running.

In some embodiments, the terminal device 1500 also includes:

a fifth starting unit configured to start a sixth timer;

The monitoring unit is configured to monitor the PDCCH scrambled by the first RNTI when the sixth timer expires and the first timer is running.

Dynamic configuration of network devices;

Predefined fixed length.

In some embodiments, the monitoring unit 1501 is further configured to not monitor the PDCCH scrambled by the first RNTI during the running of the sixth timer.

In some embodiments, the terminal device 1500 also includes:

The third restarting unit is configured to restart the first timer when a retransmission schedule or a new transmission schedule for the first HARQ process is received during the running of the first timer.

In some embodiments, the terminal device 1500 also includes:

A sixth starting unit configured to start the seventh timer while starting the sixth timer;

The monitoring unit is configured to monitor the PDCCH scrambled by the first RNTI when the sixth timer expires and the seventh timer and the first timer are running.

In some embodiments, the terminal device 1500 also includes:

The fourth retransmission unit is configured to use a second CG resource to retransmit the first uplink data when the seventh timer times out or stops running, and the second CG resource corresponds to the first HARQ process.

In some embodiments, the terminal device 1500 also includes:

The fourth control unit is configured to receive the first DFI indicating that the data is received correctly, stop the first timer and the seventh timer; or receive the second DFI indicating that the data is not received correctly, and stop the first timer. Seven timers.

In some embodiments, the terminal device 1500 also includes:

The seventh starting unit is configured to use the third DG resource to complete the transmission of the second uplink data, and start the sixth timer;

The eighth starting unit is configured to start an eighth timer after the sixth timer expires, and the HARQ process used by the third DG resource is different from the HARQ process used for the CG resource;

The monitoring unit is configured to monitor the PDCCH scrambled by the first RNTI during the running of the eighth timer.

The reference signal received power RSRP measurement result is greater than or equal to the RSRP threshold configured by the network;

There are CG resources on the selected carrier and synchronization signal block SSB;

The timing advance TA is valid.

Those skilled in the art should understand that the relevant descriptions of the terminal device in the embodiment of the present application can be understood with reference to the relevant description of the control method in the embodiment of the present application.

FIG. 16 is a schematic structural diagram of a communication device 1600 provided by an embodiment of the present application. The communication device may be a terminal device. The communication device 1600 shown in FIG. 16 includes a processor 1610, and the processor 1610 can call and run a computer program from a memory, so as to implement the method in the embodiment of the present application.

Optionally, as shown in FIG. 16 , the communication device 1600 may further include a memory 1620 . Wherein, the processor 1610 can invoke and run a computer program from the memory 1620, so as to implement the method in the embodiment of the present application.

Wherein, the memory 1620 may be an independent device independent of the processor 1610 , or may be integrated in the processor 1610 .

Optionally, as shown in FIG. 16, the communication device 1600 may further include a transceiver 1630, and the processor 1610 may control the transceiver 1630 to communicate with other devices, specifically, to send information or data to other devices, or receive other Information or data sent by the device.

Wherein, the transceiver 1630 may include a transmitter and a receiver. The transceiver 1630 may further include antennas, and the number of antennas may be one or more.

Optionally, the communication device 1600 may specifically be the network device of the embodiment of the present application, and the communication device 1600 may implement the corresponding processes implemented by the network device in each method of the embodiment of the present application. For the sake of brevity, details are not repeated here. .

Optionally, the communication device 1600 may specifically be the mobile terminal/terminal device of the embodiment of the present application, and the communication device 1600 may implement the corresponding processes implemented by the mobile terminal/terminal device in each method of the embodiment of the present application, for the sake of brevity , which will not be repeated here.

FIG. 17 is a schematic structural diagram of a chip according to an embodiment of the present application. The chip 1700 shown in FIG. 17 includes a processor 1710, and the processor 1710 can call and run a computer program from a memory, so as to implement the method in the embodiment of the present application.

Optionally, as shown in FIG. 17 , the chip 1700 may further include a memory 1720 . Wherein, the processor 1710 can invoke and run a computer program from the memory 1720, so as to implement the method in the embodiment of the present application.

Wherein, the memory 1720 may be an independent device independent of the processor 1710 , or may be integrated in the processor 1710 .

Optionally, the chip 1700 may also include an input interface 1730 . Wherein, the processor 1710 can control the input interface 1730 to communicate with other devices or chips, specifically, can obtain information or data sent by other devices or chips.

Optionally, the chip 1700 may also include an output interface 1740 . Wherein, the processor 1710 can control the output interface 1740 to communicate with other devices or chips, specifically, can output information or data to other devices or chips.

Optionally, the chip can be applied to the network device in the embodiment of the present application, and the chip can implement the corresponding processes implemented by the network device in the methods of the embodiment of the present application. For the sake of brevity, details are not repeated here.

Optionally, the chip can be applied to the mobile terminal/terminal device in the embodiments of the present application, and the chip can implement the corresponding processes implemented by the mobile terminal/terminal device in the various methods of the embodiments of the present application. For the sake of brevity, here No longer.

It should be understood that the chip mentioned in the embodiment of the present application may also be called a system-on-chip, a system-on-chip, a system-on-a-chip, or a system-on-a-chip.

FIG. 18 is a schematic block diagram of a communication system 1800 provided by an embodiment of the present application. As shown in FIG. 18 , the communication system 1800 includes a terminal device 1810 and a network device 1820 .

Wherein, the terminal device 1810 can be used to realize the corresponding functions realized by the terminal device in the above method, and the network device 1820 can be used to realize the corresponding functions realized by the network device in the above method. .

It should be understood that the processor in the embodiment of the present application may be an integrated circuit chip, which has a signal processing capability. In the implementation process, each step of the above-mentioned method embodiments may be completed by an integrated logic circuit of hardware in a processor or instructions in the form of software. The above-mentioned processor can be a general-purpose processor, a digital signal processor (Digital Signal Processor, DSP), an application-specific integrated circuit (Application Specific Integrated Circuit, ASIC), an off-the-shelf programmable gate array (Field Programmable Gate Array, FPGA) or other available Program logic devices, discrete gate or transistor logic devices, discrete hardware components. Various methods, steps, and logic block diagrams disclosed in the embodiments of the present application may be implemented or executed. A general-purpose processor may be a microprocessor, or the processor may be any conventional processor, or the like. The steps of the method disclosed in connection with 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 module can be located in a mature storage medium in the field such as random access memory, flash memory, read-only memory, programmable read-only memory or electrically erasable programmable memory, register. The storage medium is located in the memory, and the processor reads the information in the memory, and completes the steps of the above method in combination with its hardware.

It can be understood that the memory in the embodiments of the present application may be a volatile memory or a nonvolatile memory, or may include both volatile and nonvolatile memories. Among them, the non-volatile memory can be read-only memory (Read-Only Memory, ROM), programmable read-only memory (Programmable ROM, PROM), erasable programmable read-only memory (Erasable PROM, EPROM), electronically programmable Erase Programmable Read-Only Memory (Electrically EPROM, EEPROM) or Flash. The 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 (Static RAM, SRAM), Dynamic Random Access Memory (Dynamic RAM, DRAM), Synchronous Dynamic Random Access Memory (Synchronous DRAM, SDRAM), double data rate synchronous dynamic random access memory (Double Data Rate SDRAM, DDR SDRAM), enhanced synchronous dynamic random access memory (Enhanced SDRAM, ESDRAM), synchronous connection dynamic random access memory (Synchlink DRAM, SLDRAM ) and Direct Memory Bus Random Access Memory (Direct Rambus RAM, DR RAM). It should be noted that the memory of the systems and methods described herein is intended to include, but not be limited to, these and any other suitable types of memory.

It should be understood that the above-mentioned memory is illustrative but not restrictive. For example, the memory in the embodiment of the present application may also be a static random access memory (static RAM, SRAM), a dynamic random access memory (dynamic RAM, DRAM), Synchronous dynamic random access memory (synchronous DRAM, SDRAM), double data rate synchronous dynamic random access memory (double data rate SDRAM, DDR SDRAM), enhanced synchronous dynamic random access memory (enhanced SDRAM, ESDRAM), synchronous connection Dynamic random access memory (synch link DRAM, SLDRAM) and direct memory bus random access memory (Direct Rambus RAM, DR RAM), etc. That is, the memory in the embodiments of the present application is intended to include, but not be limited to, these and any other suitable types of memory.

The embodiment of the present application also provides a computer-readable storage medium for storing computer programs.

Optionally, the computer-readable storage medium can be applied to the mobile terminal/terminal device in the embodiments of the present application, and the computer program enables the computer to execute the corresponding processes implemented by the mobile terminal/terminal device in the various methods of the embodiments of the present application , for the sake of brevity, it is not repeated here.

The embodiment of the present application also provides a computer program product, including computer program instructions.

Optionally, the computer program product can be applied to the mobile terminal/terminal device in the embodiments of the present application, and the computer program instructions cause the computer to execute the corresponding processes implemented by the mobile terminal/terminal device in the methods of the embodiments of the present application, For the sake of brevity, details are not repeated here.

The embodiment of the present application also provides a computer program.

Optionally, the computer program can be applied to the mobile terminal/terminal device in the embodiment of the present application. When the computer program is run on the computer, the computer executes each method in the embodiment of the present application to be implemented by the mobile terminal/terminal device For the sake of brevity, the corresponding process will not be repeated here.

Those skilled in the art can appreciate that the units and algorithm steps of the examples described in conjunction with the embodiments disclosed herein can be implemented by electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are executed by hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art may use different methods to implement the described functions for each specific application, but such implementation should not be regarded as exceeding the scope of the present application.

Those skilled in the art can clearly understand that for the convenience and brevity of the description, the specific working process of the above-described system, device and unit can refer to the corresponding process in the foregoing method embodiment, which will not be repeated here.

In the several embodiments provided in this application, it should be understood that the disclosed systems, devices and methods may be implemented in other ways. For example, the device embodiments described above are only illustrative. For example, the division of the units is only a logical function division. In actual implementation, there may be other division methods. For example, multiple units or components can be combined or May be integrated into another system, or some features may be ignored, or not implemented. In another point, the mutual coupling or direct coupling or communication connection shown or discussed may be through some interfaces, and the indirect coupling or communication connection of devices or units may be in electrical, mechanical or other forms.

The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place, or may be distributed to multiple network units. Part or all of the units can be selected according to actual needs to achieve the purpose of the solution of this embodiment.

In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, each unit may exist separately physically, or two or more units may be integrated into one unit.

If the functions described above are realized in the form of software function units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application is essentially or the part that contributes to the prior art or the part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including Several instructions are used to make a computer device (which may be a personal computer, a server, or a network device, etc.) execute all or part of the steps of the methods described in the various embodiments of the present application. The aforementioned storage media include: U disk, mobile hard disk, read-only memory (Read-Only Memory,) ROM, random access memory (Random Access Memory, RAM), magnetic disk or optical disc, etc., which can store program codes. .

The above is only a specific implementation of the application, but the scope of protection of the application is not limited thereto. Anyone familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the application. Should be covered within the protection scope of this application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

A control method, the method comprising:

In the process of configuring authorized small data transmission CG-SDT, the terminal device uses the first CG resource or the first DG resource to complete the first uplink data transmission, and starts the first timer;

During the running of the first timer, the terminal device monitors the physical downlink control channel PDCCH scrambled by the first radio network temporary identifier RNTI; the first RNTI is the RNTI configured for the CG-SDT process.
The method according to claim 1, wherein the start timing of the first timer includes one of the following:

After completing the fixed duration of the first uplink data transmission;

The second timer expires.
The method according to claim 2, wherein the start timing of the second timer includes one of the following:

At the first symbol position of the first CG resource or the first DG resource;

At the last symbol position of the first CG resource or the first DG resource;

The receiving opportunity of the first PDCCH after the first uplink data transmission is completed.
The method according to claim 2 or 3, wherein the configuration of the length of the second timer includes one of the following:

Dynamic configuration of network devices;

Predefined fixed length.
The method according to any one of claims 2 to 4, wherein, during the running of the second timer, the terminal device does not monitor the PDCCH scrambled by the first RNTI.
The method according to any one of claims 1 to 5, wherein the first timer corresponds to the first HARQ process, and during the running of the first timer, the terminal device does not use the second The CG resource performs data transmission, and the second CG resource corresponds to the first HARQ process.
The method according to claim 6, wherein the method further comprises:

After receiving the new transmission or retransmission scheduling for the first HARQ process, the terminal device stops the first timer, and performs new transmission or retransmission of the second uplink data based on the new transmission or retransmission scheduling. retransmission of the first uplink data.
The method according to claim 6, wherein the method further comprises:

The terminal device receives the first downlink feedback indication DFI indicating that the data is received correctly or the second DFI indicating that the data is not received correctly, stops the first timer, and proceeds based on the first DFI or the second DFI New transmission of the second uplink data or retransmission of the first uplink data.
The method according to any one of claims 1 to 8, wherein the method further comprises:

When the first timer expires or is not running, the terminal device performs new transmission of the second uplink data or retransmission of the first uplink data based on the second CG resource, and the second CG resource corresponds to the Describe the first HARQ process.
The method according to claim 9, wherein the new transmission of the second uplink data or the retransmission of the first uplink data by the terminal device based on the second CG resource includes:

The terminal device performs new transmission of the second uplink data or retransmission of the first uplink data based on the first transmission times.
The method according to claim 10, wherein the terminal device performs new transmission of the second uplink data or retransmission of the first uplink data based on the first number of transmissions, comprising:

When the first count value is less than the first number of transmissions, or the first count value is less than the second number of transmissions, and the previous transmission of the first HARQ process occurs on the CG resource, the terminal device uses the second CG resource to perform the For the retransmission of the first uplink data, the second number of transmissions is equal to the first number of transmissions plus 1, and the first count value is plus 1; the first count value is used by the terminal device through the The number of times the first HARQ process transmits the first uplink data, and the second CG resource corresponds to the first HARQ process;

or when the first count value is equal to the first number of transmissions, or the first count value is equal to the second number of transmissions, the terminal device uses a second CG resource to perform new transmission of second uplink data, and The first count value is reset.
The method according to claim 10 or 11, wherein the configuration of the first number of transmission times is:

Network device configuration.
The method according to any one of claims 1 to 5, wherein the method further comprises:

The terminal device uses the first CG resource or the first DG resource to complete the first uplink data transmission, and starts a third timer;

During the running of the third timer, the terminal device does not use the second CG resource to perform new transmission of the second uplink data, and the second CG resource corresponds to the first HARQ process.
The method according to claim 13, wherein, during the running of the third timer, the terminal device receives a retransmission schedule or a new transmission schedule for the first HARQ process, and restarts the third timer device.
The method according to claim 13 or 14, wherein, during the running of the third timer, the terminal device receives a retransmission schedule or a new transmission schedule for the first HARQ process, and stops the first HARQ process. timer.
The method according to any one of claims 13 to 15, wherein, when the first timer times out or stops running, the third timer is in the running state, and the previous transmission of the first HARQ process occurs at On the CG resource, the terminal device uses a second CG resource to retransmit the first uplink data, and the second CG resource corresponds to the first HARQ process.
The method according to any one of claims 13 to 16, wherein when the fourth timer expires, the third timer is in the running state, and the previous transmission of the first HARQ process occurs on the CG resource, the The terminal device uses the second CG resource to retransmit the first uplink data, the second CG resource corresponds to the first HARQ process, and the second CG resource corresponds to the first HARQ process.
The method according to claim 17, wherein said method further comprises:

The terminal device restarts the fourth timer after completing the retransmission of the first uplink data.
The method according to any one of claims 13 to 18, wherein the method further comprises:

The terminal device uses the third DG resource to complete the transmission of the second uplink data, and starts the second timer;

The terminal device starts a fifth timer after the second timer expires, and the HARQ process used by the third DG resource is different from the HARQ process used for the CG resource;

During the running of the fifth timer, the terminal device monitors the PDCCH scrambled by the first RNTI.
The method according to claim 1, wherein, during the running of the first timer, the terminal device does not perform new transmission of the second uplink data.
The method according to claim 20, wherein said method further comprises:

Start a sixth timer; when the sixth timer expires and the first timer is running, the terminal device monitors the PDCCH scrambled by the first RNTI.
The method according to claim 21, wherein the configuration of the length of the sixth timer includes one of the following:

Dynamic configuration of network devices;

Predefined fixed length.
The method according to claim 21 or 22, wherein, during the running of the sixth timer, the terminal device does not monitor the PDCCH scrambled by the first RNTI.
The method according to any one of claims 21 to 23, wherein, during the running of the first timer, the terminal device receives a retransmission schedule or a new transmission schedule for the first HARQ process, then restarting the first timer.
The method according to any one of claims 21 to 24, wherein the method further comprises:

The terminal device starts a seventh timer while starting the sixth timer; when the sixth timer expires and the seventh timer and the first timer are running, the terminal device Monitor the PDCCH scrambled by the first RNTI.
The method according to claim 25, wherein, when the seventh timer times out or stops running, the terminal device uses a second CG resource to retransmit the first uplink data, and the second CG resource corresponds to The first HARQ process.
The method according to claim 25 or 26, wherein the method further comprises:

The terminal device receives the first DFI indicating that the data is received correctly, and stops the first timer and the seventh timer; or

The terminal device stops the seventh timer upon receiving the second DFI indicating that the data is not received correctly.
The method according to any one of claims 21 to 27, wherein the method further comprises:

The terminal device uses the third DG resource to complete the transmission of the second uplink data, and starts the sixth timer;

The terminal device starts an eighth timer after the sixth timer expires, and the HARQ process used by the third DG resource is different from the HARQ process used for the CG resource;

During the running of the eighth timer, the terminal device monitors the PDCCH scrambled by the first RNTI.
The method according to any one of claims 1 to 28, wherein the terminal device in the radio resource control inactive state triggers the CG-SDT process when a first condition is met.
The method according to claim 29, wherein the first condition comprises at least one of the following:

All the data to be transmitted belong to radio bearers that are allowed to trigger SDT, and the transmission volume of the data to be transmitted is not greater than the data volume threshold configured by the network;

The reference signal received power RSRP measurement result is greater than or equal to the RSRP threshold configured by the network;

There are CG resources on the selected carrier and synchronization signal block SSB;

The timing advance TA is valid.
A terminal device, the terminal device comprising:

The first starting unit is configured to use the first CG resource or the first DG resource to complete the first uplink data transmission during the process of configuring the authorized small data transmission CG-SDT, and start the first timer;

The monitoring unit is configured to monitor the physical downlink control channel PDCCH scrambled by the first wireless network temporary identifier RNTI during the operation of the first timer; the first RNTI is the RNTI configured for the CG-SDT process.
The terminal device according to claim 31, wherein the start timing of the first timer includes one of the following:

After completing the fixed duration of the first uplink data transmission;

The second timer expires.
The terminal device according to claim 32, wherein the start timing of the second timer includes one of the following:

At the first symbol position of the first CG resource or the first DG resource;

At the last symbol position of the first CG resource or the first DG resource;

The receiving opportunity of the first PDCCH after the first uplink data transmission is completed.
The terminal device according to claim 32 or 33, wherein the configuration mode of the length of the second timer includes one of the following:

Dynamic configuration of network devices;

Predefined fixed length.
A terminal device according to any one of claims 32 to 34, wherein,

The monitoring unit is further configured to not monitor the PDCCH scrambled by the first RNTI during the running of the second timer.
The terminal device according to any one of claims 31 to 35, wherein the terminal device further comprises:

The first data transmission unit is configured to not use a second CG resource for data transmission during the running of the first timer, the second CG resource corresponds to the first HARQ process, and the first timer is connected to the first HARQ process. corresponding to the first HARQ process.
The terminal device according to claim 36, wherein the terminal device further comprises:

The first control unit is configured to receive a new transmission or retransmission schedule for the first HARQ process, stop the first timer, and perform a new transmission of the second uplink data based on the new transmission or retransmission schedule transmission or retransmission of the first uplink data.
The terminal device according to claim 36, wherein the terminal device further comprises:

The second control unit is configured to receive the first downlink feedback indication DFI indicating that the data is received correctly or the second DFI indicating that the data is not received correctly, stop the first timer, and based on the first DFI or the second DFI The second DFI performs new transmission of the second uplink data or retransmission of the first uplink data.
The terminal device according to any one of claims 31 to 38, wherein the terminal device further comprises:

The first retransmission unit is configured to perform new transmission of the second uplink data or retransmission of the first uplink data based on the second CG resource when the first timer expires or is not running.
The terminal device according to claim 39, wherein the first retransmission unit is further configured to:

Perform new transmission of the second uplink data or retransmission of the first uplink data based on the first number of transmission times.
The terminal device according to claim 40, wherein the first retransmission unit is further configured to:

When the first count value is less than the first number of transmissions, or the first count value is less than the second number of transmissions, and the previous transmission of the first HARQ process occurs on the CG resource, use the second CG resource to perform the first uplink For retransmission of data, the second number of transmissions is equal to the first number of transmissions plus 1, and the first count value is plus 1; the first count value is used by the terminal device through the first HARQ process The number of times of transmitting the first uplink data, the second CG resource corresponds to the first HARQ process;

or when the first count value is equal to the first number of transmissions, or when the first count value is equal to the second number of transmissions, use the second CG resource to perform new transmission of the second uplink data, and the first The counter value is reset.
The terminal device according to claim 40 or 41, wherein the first number of transmissions is configured in the following manner:

Network device configuration.
The terminal device according to any one of claims 31 to 35, wherein the terminal device further comprises:

a second starting unit configured to use the first CG resource or the first DG resource to complete the first uplink data transmission, and start a third timer;

The new transmission unit is configured to not use the second CG resource to perform new transmission of the second uplink data during the running period of the third timer, and the second CG resource corresponds to the first HARQ process.
The terminal device according to claim 43, wherein the terminal device further comprises:

The first restarting unit is configured to restart the third timer when a retransmission schedule or a new transmission schedule for the first HARQ process is received during the running of the third timer.
The terminal device according to claim 43 or 44, wherein the terminal device further comprises:

The third control unit is configured to stop the first timer upon receiving a retransmission schedule or a new transmission schedule for the first HARQ process during the running of the third timer.
The terminal device according to any one of claims 43 to 45, wherein the terminal device further comprises:

The second retransmission unit is configured to use the second CG resource when the first timer times out or stops running, the third timer is in the running state, and the previous transmission of the first HARQ process occurs on the CG resource Perform retransmission of the first uplink data, and the second CG resource corresponds to the first HARQ process.
The terminal device according to any one of claims 43 to 46, wherein the terminal device further comprises:

The third retransmission unit is configured to use the second CG resource to perform the retransmission when the fourth timer expires, the third timer is in the running state, and the previous transmission of the first HARQ process occurs on the CG resource. For the retransmission of the first uplink data, the second CG resource corresponds to the first HARQ process, and the second CG resource corresponds to the first HARQ process.
The terminal device according to claim 47, wherein the terminal device further comprises:

The second restart unit is configured to restart the fourth timer after completing the retransmission of the first uplink data.
The terminal device according to any one of claims 43 to 48, wherein the terminal device further comprises:

a third starting unit, configured to use a third DG resource to complete the transmission of the second uplink data, and start the second timer;

The fourth starting unit is configured to start a fifth timer after the second timer expires, and the HARQ process used by the third DG resource is different from the HARQ process used for the CG resource;

The monitoring unit is configured to monitor the PDCCH scrambled by the first RNTI during the running of the fifth timer.
The terminal device according to claim 31, wherein the terminal device further comprises:

The second data transmission unit is configured to not perform new transmission of the second uplink data while the first timer is running.
The terminal device according to claim 50, wherein the terminal device further comprises:

a fifth starting unit configured to start a sixth timer;

The monitoring unit is configured to monitor the PDCCH scrambled by the first RNTI when the sixth timer expires and the first timer is running.
The terminal device according to claim 51, wherein the configuration method of the length of the sixth timer includes one of the following:

Dynamic configuration of network devices;

Predefined fixed length.
The terminal device according to claim 51 or 52, wherein,

The monitoring unit is further configured to not monitor the PDCCH scrambled by the first RNTI during the running of the sixth timer.
The terminal device according to any one of claims 50 to 53, wherein the terminal device further comprises:

The third restarting unit is configured to restart the first timer when a retransmission schedule or a new transmission schedule for the first HARQ process is received during the running of the first timer.
The terminal device according to any one of claims 51 to 54, wherein the terminal device further comprises:

A sixth starting unit configured to start the seventh timer while starting the sixth timer;

The monitoring unit is configured to monitor the PDCCH scrambled by the first RNTI when the sixth timer expires and the seventh timer and the first timer are running.
The terminal device according to claim 55, wherein the terminal device further comprises:

The fourth retransmission unit is configured to use a second CG resource to retransmit the first uplink data when the seventh timer times out or stops running, and the second CG resource corresponds to the first HARQ process.
The terminal device according to claim 55 or 56, wherein the terminal device further comprises:

The fourth control unit is configured to receive the first DFI indicating that the data is received correctly, stop the first timer and the seventh timer; or receive the second DFI indicating that the data is not received correctly, and stop the first timer. Seven timers.
The terminal device according to any one of claims 51 to 57, wherein the terminal device further comprises:

The seventh starting unit is configured to use the third DG resource to complete the transmission of the second uplink data, and start the sixth timer;

The eighth starting unit is configured to start an eighth timer after the sixth timer expires, and the HARQ process used by the third DG resource is different from the HARQ process used for the CG resource;

The monitoring unit is configured to monitor the PDCCH scrambled by the first RNTI during the running of the eighth timer.
The terminal device according to any one of claims 31 to 58, wherein the terminal device in the radio resource control inactive state triggers the CG-SDT procedure when a first condition is met.
The terminal device according to claim 59, wherein the first condition includes at least one of the following:

All the data to be transmitted belong to radio bearers that are allowed to trigger SDT, and the transmission volume of the data to be transmitted is not greater than the data volume threshold configured by the network;

The reference signal received power RSRP measurement result is greater than or equal to the RSRP threshold configured by the network;

There are CG resources on the selected carrier and synchronization signal block SSB;

The timing advance TA is valid.
A terminal device, comprising: a processor and a memory, the memory is used to store a computer program, the processor is used to invoke and run the computer program stored in the memory, and execute the computer program described in any one of claims 1 to 30 Methods.
A chip, comprising: a processor, configured to invoke and run a computer program from a memory, so that a device equipped with the chip executes the method as claimed in any one of claims 1 to 30.
A computer-readable storage medium for storing a computer program, the computer program causing a computer to execute the method according to any one of claims 1 to 30.
A computer program product comprising computer program instructions for causing a computer to perform the method as claimed in any one of claims 1 to 30.
A computer program that causes a computer to perform the method as claimed in any one of claims 1 to 30.