CN116803159A

CN116803159A - CG resource maintenance method, terminal equipment and network equipment

Info

Publication number: CN116803159A
Application number: CN202180091327.2A
Authority: CN
Inventors: 尤心; 林雪
Original assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Current assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Priority date: 2021-05-08
Filing date: 2021-05-08
Publication date: 2023-09-22
Also published as: WO2022236499A1

Abstract

The embodiment of the application provides a CG resource maintenance method, terminal equipment and network equipment, wherein the method comprises the following steps: the terminal equipment performs small data transmission SDT according to the configuration authorization CG resource; under the condition that the first timer is overtime, the terminal equipment carries out subsequent transmission of the SDT according to the first resource; wherein the first resource comprises at least one of the following resources: and the CG resource, the dynamic scheduling DG resource and the random access small data transmission RA-SDT resource. Based on the technical scheme, discarding of data transmitted based on CG resources can be avoided, accordingly, the utilization rate of the resources is improved, on the other hand, candidate transmission of the SDT is carried out through the first resources, unnecessary SDT triggering failure of terminal equipment can be avoided, and the success rate of SDT transmission is improved.

Description

CG resource maintenance method, terminal equipment and network equipment

Technical Field

The embodiment of the application relates to the field of communication, and more particularly relates to a CG resource maintenance method, terminal equipment and network equipment.

Background

In a fifth Generation mobile communication technology (5-Generation, 5G) New air interface (NR) system, radio resource control (Radio Resource Control, RRC) states are divided into 3 types, which are respectively: an RRC IDLE state (rrc_idle), an RRC INACTIVE state (rrc_inactive), an RRC CONNECTED state (rrc_connected). Where the rrc_inactive state is a new state introduced by the 5G system from the energy saving point of view, for the User Equipment (UE) in the rrc_inactive state, radio bearers and all radio resources are released, but the UE side and the base station side reserve the UE access context in order to quickly restore the RRC connection, the network typically keeps the UE in the rrc_inactive state where data transmission is not frequent. Before Rel-16, the UE in rrc_inactive state does not support data transmission, and when uplink (MO) or downlink (MT) data arrives, the UE needs to restore the connection, and releases the data to the INACTIVE state after the data transmission is completed. For UEs with small data size and low transmission frequency, such a transmission mechanism may cause unnecessary power consumption and signaling overhead.

In Rel-17, small data transmission (Small Data Transmission, SDT) under rrc_inactive may be implemented through a random access procedure and a pre-configured resource (e.g., CG type 1), that is, uplink small data transmission based on the random access procedure (two steps/four steps) and uplink small data transmission based on the pre-configured resource (e.g., CG type 1). However, other related schemes for SDT remain to be further refined.

Disclosure of Invention

The embodiment of the application provides a CG resource maintenance method, terminal equipment and network equipment, perfects a related scheme aiming at CG resource maintenance, and can improve the reliability of data transmission.

In a first aspect, the present application provides a CG resource maintenance method, including:

the terminal equipment performs small data transmission SDT according to the configuration authorization CG resource;

under the condition that the first timer is overtime, the terminal equipment carries out subsequent transmission of the SDT according to the first resource;

wherein the first resource comprises at least one of the following resources: and the CG resource, the dynamic scheduling DG resource and the random access small data transmission RA-SDT resource.

In a second aspect, the present application provides a CG resource maintenance method, including:

the network equipment performs small data transmission SDT according to the configuration authorization CG resource;

The network equipment carries out subsequent transmission of the SDT according to the first resource;

In a third aspect, the present application provides a terminal device for performing the method of the first aspect or each implementation manner thereof. Specifically, the terminal device includes a functional module for executing the method in the first aspect or each implementation manner thereof.

In one implementation, the terminal device may include a processing unit for performing functions related to information processing. For example, the processing unit may be a processor.

In one implementation, the terminal device may include a transmitting unit and/or a receiving unit. The transmitting unit is configured to perform a function related to transmission, and the receiving unit is configured to perform a function related to reception. For example, the transmitting unit may be a transmitter or a transmitter and the receiving unit may be a receiver or a receiver. For another example, the terminal device is a communication chip, the sending unit may be an input circuit or an interface of the communication chip, and the sending unit may be an output circuit or an interface of the communication chip.

In a fourth aspect, the present application provides a network device for performing the method of the second aspect or implementations thereof. In particular, the network device comprises functional modules for performing the method of the second aspect or implementations thereof described above.

In one implementation, the network device may include a processing unit to perform functions related to information processing. For example, the processing unit may be a processor.

In one implementation, the network device may include a transmitting unit and/or a receiving unit. The transmitting unit is configured to perform a function related to transmission, and the receiving unit is configured to perform a function related to reception. For example, the transmitting unit may be a transmitter or a transmitter and the receiving unit may be a receiver or a receiver. For another example, the network device is a communication chip, the receiving unit may be an input circuit or an interface of the communication chip, and the transmitting unit may be an output circuit or an interface of the communication chip.

In a fifth aspect, the present application provides a terminal device comprising a processor and a memory. The memory is configured to store a computer program, and the processor is configured to invoke and execute the computer program stored in the memory, so as to perform the method in the first aspect or each implementation manner thereof.

In one implementation, the processor is one or more and the memory is one or more.

In one implementation, the memory may be integrated with the processor or separate from the processor.

In one implementation, the terminal device further includes a transmitter (transmitter) and a receiver (receiver).

In a sixth aspect, the present application provides a network device comprising a processor and a memory. The memory is used for storing a computer program, and the processor is used for calling and running the computer program stored in the memory to execute the method in the second aspect or various implementation manners thereof.

In one implementation, the network device further includes a transmitter (transmitter) and a receiver (receiver).

In a seventh aspect, the present application provides a chip for implementing the method in any one of the first to second aspects or each implementation thereof. Specifically, the chip includes: a processor for calling and running a computer program from a memory, causing a device on which the chip is mounted to perform the method as in any one of the first to second aspects or implementations thereof described above.

In an eighth aspect, the present application provides a computer-readable storage medium storing a computer program for causing a computer to perform the method of any one of the above first to second aspects or implementations thereof.

In a ninth aspect, the present application provides a computer program product comprising computer program instructions for causing a computer to perform the method of any one of the first to second aspects or implementations thereof.

In a tenth aspect, the present application provides a computer program which, when run on a computer, causes the computer to perform the method of any one of the first to second aspects or implementations thereof.

Based on the above technical scheme, under the condition that the first timer is overtime, the terminal device performs subsequent transmission of the SDT according to the first resource, so that discarding of data transmitted based on the CG resource can be avoided, correspondingly, the utilization rate of the resource is improved, on the other hand, candidate transmission of the SDT is performed through the first resource, unnecessary SDT triggering failure of the terminal device can be avoided, and the success rate of SDT transmission is improved.

Drawings

Fig. 1 is an example of a communication system provided by an embodiment of the present application.

Fig. 2 is a schematic diagram of an upstream EDT air interface flow provided in an embodiment of the present application.

Fig. 3 is a schematic diagram of a PUR transmission air interface flow provided in an embodiment of the present application.

Fig. 4 is a schematic flowchart of a CG resource maintenance method provided by an embodiment of the present application.

Fig. 5 is a schematic block diagram of a terminal device provided in an embodiment of the present application.

Fig. 6 is a schematic block diagram of a network device provided by an embodiment of the present application.

Fig. 7 is a schematic block diagram of a communication device provided by an embodiment of the present application.

Fig. 8 is a schematic block diagram of a chip provided by an embodiment of the present application.

Detailed Description

The following description of the technical solutions according to the embodiments of the present application will be given with reference to the accompanying drawings in the embodiments of the present application, and it is apparent that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.

Fig. 1 is a schematic diagram of a communication system according to an embodiment of the present application.

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

It should be understood that embodiments of the present application are illustrated by way of example only with respect to communication system 100, and embodiments of the present application are not limited thereto. That is, the technical solution of the embodiment of the present application may be applied to various communication systems, for example: long term evolution (Long Term Evolution, LTE) system, LTE time division duplex (Time Division Duplex, TDD), universal mobile telecommunications system (Universal Mobile Telecommunication System, UMTS), internet of things (Internet of Things, ioT) system, narrowband internet of things (Narrow Band Internet of Things, NB-IoT) system, enhanced Machine-type-Type Communications (eMTC) system, 5G communication system (also referred to as New Radio (NR) communication system), or future communication system, etc.

In the communication system 100 shown in fig. 1, the network device 120 may be an access network device in communication with the terminal device 110. The access network device may provide communication coverage for a particular geographic area and may communicate with terminal devices 110 (e.g., UEs) located within 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 (Next Generation Radio Access Network, NG RAN) device, or a base station (gNB) in a NR system, or a radio controller in a cloud radio access network (Cloud Radio Access Network, CRAN), or the network device 120 may be a relay station, an access point, a vehicle device, a wearable device, a hub, a switch, a bridge, a router, or a network device in a future evolved public land mobile network (Public Land Mobile Network, PLMN), etc.

Terminal device 110 may be any terminal device including, but not limited to, a terminal device that employs a wired or wireless connection with network device 120 or other terminal devices.

For example, the terminal device 110 may refer to an access terminal, user Equipment (UE), subscriber unit, subscriber station, mobile station, remote terminal, mobile device, user terminal, wireless communication device, user agent, or User Equipment. An access terminal may be a cellular telephone, a cordless telephone, a session initiation protocol (Session Initiation Protocol, SIP) phone, an IoT device, a satellite handset, a wireless local loop (Wireless Local Loop, WLL) station, a personal digital assistant (Personal Digital Assistant, PDA), a handset with wireless communication capabilities, a computing device or other processing device connected to a wireless modem, an in-vehicle device, a wearable device, a terminal device in a 5G network or a terminal device in a future evolution network, etc.

The terminal Device 110 may be used for Device-to-Device (D2D) communication.

The wireless communication system 100 may further comprise a core network device 130 in communication with the base station, which core network device 130 may be a 5G core,5gc device, e.g. an access and mobility management function (Access and Mobility Management Function, AMF), further e.g. an authentication server function (Authentication Server Function, AUSF), further e.g. a user plane function (User Plane Function, UPF), further e.g. a 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 session management function+a data gateway (Session Management Function + Core Packet Gateway, smf+pgw-C) device of the core network. It should be appreciated that SMF+PGW-C may perform the functions performed by both SMF and PGW-C. In the network evolution process, the core network device may also call other names, or form new network entities by dividing the functions of the core network, which is not limited in this embodiment of the present application.

Communication may also be achieved by establishing connections between various functional units in the communication system 100 through a next generation Network (NG) interface.

For example, the terminal device establishes an air interface connection with the access network device through an NR interface, and is used for transmitting user plane data and control plane signaling; the terminal equipment can establish control plane signaling connection with AMF through NG interface 1 (N1 for short); an access network device, such as a next generation radio access base station (gNB), can establish a user plane data connection with a UPF through an NG interface 3 (N3 for short); the access network equipment can establish control plane signaling connection with AMF through NG interface 2 (N2 for short); the UPF can establish control plane signaling connection with the SMF through an NG interface 4 (N4 for short); the UPF can interact user plane data with the data network through an NG interface 6 (N6 for short); the AMF may establish a control plane signaling connection with the SMF through NG interface 11 (N11 for short); the SMF may establish a control plane signaling connection with the PCF via NG interface 7 (N7 for short).

Fig. 1 exemplarily illustrates one base station, one core network device, and two terminal devices, alternatively, the wireless communication system 100 may include a plurality of base station devices and each base station may include other number of terminal devices within a coverage area, which is not limited by the embodiment of the present application.

It should be understood that devices having communication functions in the network/system according to the embodiments of the present application may be referred to as communication devices. Taking the communication system 100 shown in fig. 1 as an example, the communication device may include a network device 120 and a terminal device 110 with communication functions, where the network device 120 and the terminal device 110 may be the devices described above, and are not described herein again; the communication device may also include other devices in the communication system 100, such as a network controller, a mobility management entity, and other network entities, which are not limited in this embodiment of the present application.

It should be understood that the terms "system" and "network" are used interchangeably herein. The term "and/or" is herein merely an association relationship describing an associated object, meaning that there may be three relationships, e.g., a and/or B, may represent: a exists alone, A and B exist together, and B exists alone. In addition, the character "/" herein generally indicates that the front and rear associated objects are an "or" relationship.

In a fifth Generation mobile communication technology (5-Generation, 5G) New air interface (NR) system, radio resource control (Radio Resource Control, RRC) states are divided into 3 types, which are respectively: an RRC IDLE state (rrc_idle), an RRC INACTIVE state (rrc_inactive), an RRC CONNECTED state (rrc_connected).

In the rrc_idle state: mobility is UE-based cell selection reselection, paging is initiated by a Core Network (CN), and paging areas are configured by the CN. The base station side does not have a UE Access Stratum (AS) context, and does not have RRC connection.

In the rrc_connected state: there is an RRC connection and the base station and UE have a UE AS context. The network device knows that the location of the UE is cell specific. Mobility is mobility controlled by the network device. Unicast data may be transmitted between the UE and the base station.

Rrc_inactive: mobility is a UE-based cell selection reselection, there is a connection between CN-NRs, the UE AS context is present on a certain base station, paging is triggered by the radio access network (Radio Access Network, RAN), the RAN-based paging area is managed by the RAN, the network device knows that the UE location is based on the RAN paging area level.

It should be noted that, the UE in the rrc_connected state may enter the rrc_idle state by releasing the RRC connection; the UE in the rrc_idle state may enter the rrc_connected state by establishing an RRC connection; a UE in an rrc_connected state may enter an rrc_inactive state through a suspension release (Release with Suspend) RRC connection; the UE in the rrc_inactive state may enter the rrc_connected state through a Resume (Resume) RRC connection, and may also enter the rrc_idle state through release of the RRC connection. In other words, the terminal device may be switched between the above several states, which is not particularly limited by the present application.

For a User Equipment (UE) in rrc_inactive state, radio bearers and all radio resources are released, but UE side and base station side reserve UE access context in order to quickly restore RRC connection, the network typically keeps the UE in rrc_inactive state with infrequent data transmission. Before Rel-16, the UE in rrc_inactive state does not support data transmission, and when uplink (MO) or downlink (MT) data arrives, the UE needs to restore the connection, and releases the data to the INACTIVE state after the data transmission is completed. For UEs with small data size and low transmission frequency, such a transmission mechanism may cause unnecessary power consumption and signaling overhead.

In Rel-17, small data transmission (Small Data Transmission, SDT) under rrc_inactive may be implemented through a random access procedure and a pre-configured resource (e.g., CG type 1), that is, uplink small data transmission based on the random access procedure (two steps/four steps) and uplink small data transmission based on the pre-configured resource (e.g., CG type 1).

For uplink small data transmission based on a random access procedure (two steps/four steps), early data transmission (early data transmission, EDT), i.e. small data transmission, has been introduced in LTE, in which the UE may remain in an idle (idle) state or a suspended (suspended) state or a deactivated (inactive) state all the time, completing transmission of uplink small data packets and/or downlink small data packets.

Fig. 2 is a schematic diagram of an upstream EDT air interface flow 200 according to an embodiment of the present application.

As shown in fig. 2, the process 200 may include:

s210, the terminal equipment sends a preamble to the network equipment.

The terminal device sends Msg 1 to the base station to tell the network device that the terminal device initiated a random access request, where the Msg 1 carries a random access preamble (Random Access Preamble, RAP), or called a random access preamble sequence, a preamble, etc. Meanwhile, msg 1 can also be used for the network device to estimate the transmission delay between the network device and the terminal device and calibrate the uplink time according to the transmission delay. Specifically, the terminal device selects a preamble index (index) and PRACH resources for transmitting the preamble; the terminal device then transmits the preamble on the PRACH. Wherein the network device informs all terminal devices on which time-frequency resources the preamble, e.g., SIB2, is allowed to be transmitted by broadcasting a system information block (System Information Block, SIB).

S220, the terminal device receives the random access response (Random Access Response, RAR) sent by the network device.

After receiving the Msg 1 sent by the terminal device, the network device sends an Msg 2, i.e. a random access response (Random Access Response, RAR) message to the terminal device. The Msg 2 may carry, for example, a Time Advance (TA), an uplink grant command, such as configuration of uplink resources, and a Temporary Cell radio network Temporary identifier (TC-RNTI), etc. The terminal device listens to the physical downlink control channel (Physical Downlink Control Channel, PDCCH) within a random access response time window (RAR window) for receiving the RAR message replied by the network device. The RAR message may be descrambled using a corresponding random access radio network temporary identifier (Random Access Radio Network Temporary Identifier, RA-RNTI). If the terminal equipment does not receive the RAR message replied by the network equipment in the RAR time window, the random access process is considered to be failed. If the terminal device successfully receives an RAR message, and the preamble index (preamble index) carried in the RAR message is the same as the preamble index sent by the terminal device through Msg 1, the terminal device considers that the RAR is successfully received, and then the terminal device can stop monitoring in the RAR time window.

Wherein, the Msg 2 may include RAR messages for a plurality of terminal devices, and the RAR message of each terminal device may include a Random Access Preamble Identifier (RAPID) adopted by the terminal device, information of resources used for transmitting the Msg 3, TA adjustment information, TC-RNTI, and the like.

S230, the terminal device transmits an RRC connection resume request (RRCConnectionResumeRequest) and Uplink data (Uplink data) to the network device. The RRC connection recovery request includes, but is not limited to: resume ID (resume eID), resume reason (resume eCAase), short resume MAC-I (shortReseumeMAC-I).

S240, the terminal equipment receives an RRC release (RRC release) message and Downlink data (Downlink data) sent by the network equipment. The RRC release message includes, but is not limited to: release reason (releaseCause), resume ID (resume ID) and Network (PLMN) color Code (NCC). The RRC release message carries the NCC for encryption and integrity protection of the MSG4, i.e. the MSG4 is encrypted and integrity protected based on the key generated by the NCC. MAC-I is used for authentication. The RRC release message may also be referred to as an RRC connection release (rrcconnecionlese release) message.

For EDT procedure, the UE does not enter the connected state, and the transmission of the small data packet (i.e., the uplink data in S230 and the downlink data in S240) is completed. In configuration, the network configures a maximum transmission block size (TB size) which is allowed to be transmitted by the current network on the SIB2, the UE judges the data quantity to be transmitted, and if the data quantity is smaller than the maximum transmission block size of the broadcast, the UE can initiate EDT transmission; otherwise, the UE enters a connection state to transmit data using a normal connection establishment procedure.

For uplink small data transmission based on pre-configured resources (such as CG type 1), in LTE Release16, a method for data transmission using pre-configured uplink resources (Preconfigured Uplink Resource, PUR) in IDLE state is introduced for narrowband internet of things (Narrow Band Internet of Things, NB-IoT) and enhanced Machine-type communication (eMTC) scenarios. The PUR is only valid in the currently configured cell, i.e. when the UE detects a cell change and initiates a random access in the new cell, the UE needs to release the PUR of the original cell configuration. The PUR transmission flow is similar to LTE UP-EDT, but omits the procedure of sending a preamble acquisition TA and an uplink grant (UL grant).

Fig. 3 is a schematic diagram of PUR transmission air interface procedure 300 according to an embodiment of the application.

As shown in fig. 3, the process 300 may include:

s310, the terminal device transmits an RRC connection resume request (RRCConnectionResumeRequest) and Uplink data (Uplink data) to the network device. The RRC connection recovery request includes, but is not limited to: resume ID (resume ID), establish reason (establishment cause), short resume MAC-I (shortReseumeMAC-I).

S320, the terminal device receives an RRC release (RRC release) message, downlink data (Downlink data), and a timing advance command (Time Advance Command) sent by the network device. The RRC release message includes, but is not limited to: release reason (releaseCause), resume ID (resume ID) and Network (PLMN) color Code (NCC). The RRC release message carries the NCC for encryption and integrity protection of the MSG4, i.e. the MSG4 is encrypted and integrity protected based on the key generated by the NCC. MAC-I is used for authentication. The RRC release message may also be referred to as an RRC connection release (rrcconnecionlese release) message.

An important premise for the UE to perform data transmission using PUR is to have a valid TA. In one implementation, the condition to determine whether the TA is valid comprises at least one of:

the time alignment timer (TimeAlignmentTimer, TAT) is in an operational state; and/or

The RSRP change (increase or decrease) is not greater/less than the set threshold.

Wherein, the configuration of TAT is issued to UE through RRCConnectionRelease message as part of PUR configuration. The RRC instructs the MAC layer or the bottom layer to release the corresponding configuration according to the configuration of the TAT. After receiving the RRCConnection release message, the RRC judges whether pur-Config is contained or not, if not, the UE keeps the existing configuration unchanged, and the TAT is not restarted; if included, the RRC performs one of the following actions according to the PUR configuration (PUR-Config):

if the PUR configuration is set to be a configuration (setup), the UE stores or replaces the original PUR configuration, and if the PUR configuration includes a PUR time alignment timer (PUR-TimeAlignmentTimer), the RRC layer instructs the lower layer PUR-TimeAlignmentTimer; if the PUR configuration does not include PUR-TimeAlignmentTimer, the RRC layer instructs the lower layer to release PUR-TimeAlignmentTimer.

If the PUR configuration is set to release, the UE releases the PUR configuration and instructs the lower layer to release the PUR-TimeAlignimentTimer.

If the network does not give a display indication and the UE currently has a pre-configured resource, the UE maintains the current configuration by default behavior after receiving the RRCConnection Release message.

TAT in PUR transmission is maintained by the MAC layer, if the MAC layer receives PUR-TimeAlignimentTimer configured by the higher layer, the TAT is started or restarted; if the MAC layer receives the instruction of the upper layer to release pur-TimeAlignimentTimer, the TAT is stopped. In addition, the MAC needs to start or restart the TAT according to the received TAC MAC CE or the time adjustment amount indicated by the PDCCH, in addition to the higher layer indication.

Fig. 4 shows a schematic flow chart of a CG resource maintenance method 400 according to an embodiment of the present application, the method 400 may be performed interactively by a terminal device and a network device. The terminal device shown in fig. 4 may be a terminal device as shown in fig. 1, and the network device shown in fig. 4 may be an access network device as shown in fig. 1.

As shown in fig. 4, the method 400 may include:

s410, the terminal equipment performs small data transmission SDT according to the configuration authorization CG resource;

s420, under the condition that the first timer is overtime, the terminal equipment carries out subsequent transmission of the SDT according to the first resource;

In other words, in the process of adopting the configuration authorized CG resource to perform small data transmission SDT, if the first timer times out, adopting the available first resource to continue the subsequent transmission of the SDT process.

In some embodiments, where the first resource includes the CG resource, the S420 may include:

the terminal equipment starts or restarts the first timer;

and the terminal equipment uses the CG resource to transmit SDT.

In other words, by starting and/or restarting the first timer, the SG resource is continuously used for subsequent transmission of the SDT procedure. Since the validity of the CG resource depends on the first timer and the amount of change of the signal quality of the serving cell, that is, even if the terminal is currently performing CG-SDT transmission, it is possible that the resource is released due to the timeout of the first timer, and thus the SDT fails, however, in this embodiment, by starting and/or restarting the first timer, the terminal device can continue to use the SG resource for subsequent transmission of the SDT procedure.

In some implementations, the first timer is started and/or restarted when at least one of the following conditions is met:

there is data and/or signaling being transmitted;

the presence of successfully transmitted data and/or signaling;

the variation of the signal quality of the serving cell exceeds a pre-configured threshold;

and verifying that the CG resource is valid.

In some implementations, the verifying that CG resources are valid includes: and the CG resource is validated each time in the CG-SDT flow. In some implementations, the presence of data and/or signaling being transmitted includes: there is data and/or signaling being transmitted using the CG resources. In some implementations, the presence of successfully transmitted data and/or signaling includes: there is data and/or signaling that has been successfully transmitted using the CG resources. In some implementations, the data and/or signaling being transmitted includes at least one of: data and/or signaling to be transmitted; data and/or signaling of correct feedback is not received. In some implementations, the successfully transmitted data packets and/or signaling include: and successfully receiving feedback information of successful transmission of the N-1 data packet, wherein N represents whether the next data packet to be determined is successfully transmitted, and N is greater than or equal to 2.

It should be noted that the signal quality of the serving cell includes, but is not limited to: reference signal received power (Reference Signal Receiving Power, RSRP) and/or reference signal received quality (Reference Signal Receiving Quality, RSRQ). In addition, the signal quality variation of the serving cell exceeds the pre-configured threshold as the condition of starting and/or restarting the first timer, which is equivalent to the condition that the CG resource is still available but the CG resource is released is satisfied. In addition, the above conditions may be used alone or in combination, or may even be used in combination with other conditions not mentioned, which is not particularly limited in the present application, for example, if there is data and/or signaling being transmitted using the CG resource by the terminal, but the amount of change in signal quality of the serving cell exceeds a preconfigured threshold, then the CG resource may be considered to be still available, the CG resource is not released, and the first timer is restarted, that is, the subsequent transmission of the SDT procedure using the CG resource is continued.

In some embodiments, where the first resource comprises the DG resource, the S420 may comprise:

The terminal equipment releases the CG resource;

and the terminal equipment performs subsequent transmission of the SDT according to the DG resource.

In other words, if the first timer times out, the DG resource is used to perform the subsequent transmission of the SDT procedure.

In some implementations, the method 400 may further include:

the terminal device transmits a first indication information,

the first indication information is used for indicating at least one of the following:

the first timer has been started or restarted;

the CG resource has been released;

indicating that subsequent transmissions of the SDT use CG resource transmissions;

indicating that subsequent transmissions of the SDT use DG resource transmissions.

In other words, the first indication information is used to indicate resources used by a subsequent transmission of the SDT; alternatively, the first indication information may be used to indicate or be used by the network device to determine the first resource. Correspondingly, the network device adopts the CG resource or the DG resource to carry out subsequent transmission of the SDT according to the first indication information. As an example, before the terminal device uses the first resource to perform subsequent transmission of the SDT procedure, the first indication information is sent to the network device; if the first indication information is used for indicating that the subsequent transmission of the SDT uses DG resource transmission; correspondingly, after the network device receives the first indication information, dynamic scheduling can be performed for subsequent transmission of the SDT.

In some implementations, the first indication information is carried in at least one of: a medium access Control (Media Access Control, MAC) Control Element (CE), uplink Control information (Uplink Control Information, UCI), and radio resource Control (Radio Resource Control, RRC) signaling. As an example, the MCE CE includes a buffer status report (Buffer Status Report, BSR), and/or the RRC signaling includes an RRC resume request (RRC resume request); i.e. the first indication information may be carried in the BSR and/or the RRC recovery request.

It should be understood that "corresponding" mentioned in the embodiments of the present application may mean that there is a direct correspondence or an indirect correspondence between the two, may mean that there is an association between the two, and may also be a relationship between an instruction and an instruction, a configuration and a configuration, or the like. It should also be understood that "predefined" or "predefined rules" mentioned in the embodiments of the present application may be implemented by pre-storing corresponding codes, tables or other manners in which related information may be indicated in devices (including, for example, terminal devices and network devices), and the present application is not limited to the specific implementation thereof. Such as predefined may refer to what is defined in the protocol. It should be further understood that, in the embodiment of the present application, the "protocol" may refer to a standard protocol in the field of communications, and may include, for example, an LTE protocol, an NR protocol, and related protocols applied in a future communication system, which is not limited by the present application.

For example, the MAC CE includes therein an indication that the first timer has been "started or restarted; the CG resource has been released; indicating that subsequent transmissions of the SDT use CG resource transmissions; an information field indicating that subsequent transmissions of the SDT use DG resource transmissions; for another example, the UCI may include a flag indicating "the first timer has been started or restarted; the CG resource has been released; indicating that subsequent transmissions of the SDT use CG resource transmissions; an information field indicating that subsequent transmissions of the SDT are transmitted using DG resources.

In the embodiment of the present application, the terminal device may not need to send the first indication information to the network device.

For example, the first resource is preset as the DG resource. The "preset" may be implemented by pre-storing corresponding codes, tables or other manners of indicating relevant information in devices (including, for example, terminal devices and network devices), and the application is not limited to the specific implementation manner. Such as preset, may refer to what is defined in the protocol. Alternatively, the "protocol" may refer to a standard protocol in the communication field, and may include, for example, an LTE protocol, an NR protocol, and related protocols applied to a future communication system, which is not particularly limited by the present application. Since the DG resource is scheduled by the network device, when the DG resource is used for subsequent transmission of the SDT procedure, the network device needs to determine when to schedule the resource. In one implementation, the first timer may be maintained at the same time at the network device side; and if the first timer is overtime, adopting the DG resource to carry out subsequent transmission of the SDT process. Optionally, before the DG resource is adopted for subsequent transmission of the SDT procedure, the network device may perform resource scheduling for the subsequent transmission of the SDT.

In some embodiments, where the first resource comprises the RA-SDT resource, the S420 may comprise:

the terminal equipment releases the CG resource;

and the terminal equipment performs subsequent transmission of the SDT according to the RA-SDT resource.

In other words, if the first timer expires, RA-SDT resources are used instead for subsequent transmissions of the SDT procedure.

In some embodiments, the first timer is a timer (timeAlignmentTimer) for maintaining an advance timing TA, or a TA during operation of the first timer is active.

In some embodiments, the first timer is a timer for SDT configured by the network device in a connected state, or the first timer is a timer for SDT configured by the network device through a radio resource control RRC release message.

In some embodiments, the first timer is a time aligned timer TAT, or the first timer is a different timer than the TAT.

In some embodiments, the method 400 may further comprise:

it is determined whether to trigger a configuration authorization small data transfer CG-SDT procedure.

In some implementations, determining to trigger the CG-SDT process is performed if at least one of the following conditions is met:

The data volume of the uplink data is smaller than or equal to the SDT threshold;

the variation of the signal quality of the serving cell is less than or equal to a pre-configured threshold;

CG resources available on the selected carrier;

CG resources available on the selected beam;

the time alignment timer TAT is in the run-time.

It should be noted that the signal quality of the serving cell includes, but is not limited to: reference signal received power (Reference Signal Receiving Power, RSRP) and/or reference signal received quality (Reference Signal Receiving Quality, RSRQ).

In some embodiments, the method 400 may further comprise:

the first timer is started and/or restarted.

when receiving the RRC release message;

when the terminal equipment enters a deactivation state;

triggering the SDT flow;

triggering the CG-SDT flow of configuration authorization small data transmission;

verifying that CG resources are valid;

each time CG resources are verified to be valid in the CG-SDT flow.

Taking the condition that the terminal equipment enters a deactivated state as a starting condition and/or a restarting condition as an example, when uplink data arrives at a higher layer, the terminal equipment triggers an SDT flow, specifically selects a corresponding SDT type (CG-SDT/RA-SDT) and a corresponding resource based on an SDT selection criterion to transmit the uplink data. Meanwhile, the terminal device starts a first timer, and the first timer is configured by the network side through an RRC release (RRC release) message when the terminal device enters a deactivation (inactive) state.

The following describes aspects of the application in connection with specific embodiments.

Example 1:

the network side sends an RRC release message, the RRC release message is used for indicating the terminal to return to an RRC deactivated state, the message carries CG resource configuration and is used for transmitting small data in the RRC deactivated state by the terminal, meanwhile, the RRC release message also comprises a first timer used for guaranteeing the validity of TA, the terminal starts the first timer when receiving the RRC release message and entering the RRC deactivated state, and when the first timer is overtime, the TA is considered to be invalid, and at the moment, the terminal can release the configured CG resource for SDT.

If the terminal chooses to use CG resources to trigger SDT flow, at least one of the following needs to be satisfied:

CG resources available on the selected carrier;

CG resources available on the selected beam;

the time alignment timer TAT is in the run-time.

If the first timer times out in the SDT process, the terminal may immediately restart the first timer and continue to use the CG resource to perform subsequent transmission in the SDT process, including uplink data transmission and downlink reception. For example, if a terminal chooses to continue using the CG resources for subsequent transmissions of the SDT procedure, at least one of the following needs to be satisfied:

The first timer times out;

when there is data and/or signaling being transmitted using the CG resource;

when there is a data packet and/or signaling that has been successfully transmitted using the CG resource;

when the variation of the signal quality of the serving cell exceeds a preset threshold;

verifying that CG resources are valid;

each time CG resources are verified to be valid in the CG-SDT flow.

Example 2:

CG resources available on the selected carrier;

CG resources available on the selected beam;

the time alignment timer TAT is in the run-time.

And if the first timer is overtime in the SDT process of the terminal, the terminal releases CG resources and adopts the DG resources to carry out subsequent transmission of the SDT process.

In some implementations, the terminal device sends first indication information, where the first indication information is used to indicate at least one of:

the first timer has been started or restarted;

the CG resource has been released;

In another implementation, the first timer may be maintained at the network device side at the same time; and if the first timer is overtime, adopting the DG resource to carry out subsequent transmission of the SDT process. Specifically, the following transmission of the SDT procedure may be performed by using the DG resource if the first timer expires in a protocol agreed manner.

Example 3:

CG resources available on the selected carrier;

CG resources available on the selected beam;

the time alignment timer TAT is in the run-time.

And if the first timer is overtime in the SDT process of the terminal, releasing CG resources and using RA-SDT resources to carry out subsequent transmission of the SDT process.

The preferred embodiments of the present application have been described in detail above with reference to the accompanying drawings, but the present application is not limited to the specific details of the above embodiments, and various simple modifications can be made to the technical solution of the present application within the scope of the technical concept of the present application, and all the simple modifications belong to the protection scope of the present application. For example, the specific features described in the above embodiments may be combined in any suitable manner, and in order to avoid unnecessary repetition, various possible combinations are not described further. As another example, any combination of the various embodiments of the present application may be made without departing from the spirit of the present application, which should also be regarded as the disclosure of the present application.

It should be further understood that, in the various method embodiments of the present application, the sequence numbers of the foregoing processes do not mean the order of execution, and the order of execution of the processes should be determined by the functions and internal logic of the processes, and should not constitute any limitation on the implementation process of the embodiments of the present application. Further, in the embodiment of the present application, the terms "downlink" and "uplink" are used to indicate a transmission direction of a signal or data, where "downlink" is used to indicate that the transmission direction of the signal or data is a first direction of a user equipment transmitted from a station to a cell, and "uplink" is used to indicate that the transmission direction of the signal or data is a second direction of a user equipment transmitted from a cell to a station, 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 merely an association relationship describing the association object, which means that three relationships may exist. Specifically, a and/or B may represent: a exists alone, A and B exist together, and B exists alone. In addition, the character "/" herein generally indicates that the front and rear associated objects are an "or" relationship.

The method embodiments of the present application are described in detail above with reference to fig. 1 to 4, and the apparatus embodiments of the present application are described in detail below with reference to fig. 5 to 8.

Fig. 5 is a schematic block diagram of a terminal device 500 of an embodiment of the present application.

A first transmission unit 510, configured to perform small data transmission SDT according to the configuration grant CG resource;

a second transmission unit 520, configured to perform subsequent transmission of the SDT according to the first resource if the first timer expires;

In some embodiments, in the case that the first resource includes the CG resource, the second transmission unit 520 is specifically configured to:

starting or restarting the first timer;

and transmitting the SDT by using the CG resource.

In some embodiments, the second transmission unit 520 is specifically configured to:

starting or restarting the first timer when at least one of the following conditions is met:

there is data and/or signaling being transmitted;

the presence of successfully transmitted data and/or signaling;

And verifying that the CG resource is valid.

In some embodiments, said verifying CG resources are valid comprises: and the CG resource is validated each time in the CG-SDT flow.

In some embodiments, the data and/or signaling being transmitted includes at least one of:

data and/or signaling to be transmitted;

data and/or signaling of correct feedback is not received.

In some embodiments, the successfully transmitted data packets and/or signaling include: and successfully receiving feedback information of successful transmission of the N-1 data packet, wherein N represents whether the next data packet to be determined is successfully transmitted, and N is greater than or equal to 2.

In some embodiments, in the case that the first resource includes the DG resource, the second transmission unit 520 is specifically configured to:

the terminal equipment releases the CG resource;

In some embodiments, the second transmission unit 520 is further configured to:

a first indication information is transmitted and the first indication information,

the first timer has been started or restarted;

the CG resource has been released;

In some embodiments, the first indication information is carried in at least one of:

a medium access control unit MAC CE, uplink control information UCI, and radio resource control RRC signaling.

In some embodiments, the MCE CE includes a buffer status report BSR, and/or the RRC signaling includes an RRC resume request.

In some embodiments, in the case that the first resource includes the RA-SDT resource, the second transmission unit 520 is specifically configured to:

releasing the CG resource;

and carrying out subsequent transmission of the SDT according to the RA-SDT resource.

In some embodiments, the first timer is a timer for maintaining an advance timing TA, or a TA during the first timer run is active.

In some embodiments, the method further comprises:

In some embodiments, the first transmission unit 510 is further configured to:

determining to trigger the CG-SDT process if at least one of the following conditions is satisfied:

CG resources available on the selected carrier;

CG resources available on the selected beam;

the time alignment timer TAT is in the run-time.

In some embodiments, the first transmission unit 510 is further configured to:

the first timer is started and/or restarted.

In some embodiments, the first transmission unit 510 is specifically configured to:

starting and/or restarting the first timer when at least one of the following conditions is met:

when receiving the RRC release message;

when the terminal equipment enters a deactivation state;

triggering the SDT flow;

verifying that CG resources are valid;

each time CG resources are verified to be valid in the CG-SDT flow.

It should be understood that apparatus embodiments and method embodiments may correspond with each other and that similar descriptions may refer to the method embodiments. Specifically, the terminal device 500 shown in fig. 5 may correspond to a corresponding main body in the method 400 for executing the embodiment of the present application, and the foregoing and other operations and/or functions of each unit in the terminal device 500 are respectively for implementing the corresponding flow in each method in fig. 4, which are not described herein for brevity.

Fig. 6 is a schematic block diagram of a network device 600 of an embodiment of the present application.

As shown in fig. 6, the network device 600 may include:

a first transmission unit 610, configured to perform small data transmission SDT according to the configuration grant CG resource;

a second transmission unit 620, configured to perform subsequent transmission of the SDT according to the first resource;

In some embodiments, the second transmission unit 620 is specifically configured to:

receiving first indication information;

according to the first indication information, adopting the CG resource or the DG resource to carry out subsequent transmission of the SDT;

wherein the first indication information is used for indicating at least one of the following:

the first timer has been started or restarted;

the CG resource has been released;

In some embodiments, in the case that the first resource includes the DG resource, the second transmission unit 620 is specifically configured to:

and if the first timer is overtime, adopting the DG resource to carry out subsequent transmission of the SDT.

In some embodiments, the first transmission unit 610 is further configured to:

and sending a Radio Resource Control (RRC) release message, wherein the RRC release message is used for indicating the terminal equipment to enter an RRC deactivation state, and comprises configuration information for configuring authorized CG resources and/or configuration information of a first timer.

It should be understood that apparatus embodiments and method embodiments may correspond with each other and that similar descriptions may refer to the method embodiments. Specifically, the network device 600 shown in fig. 6 may correspond to a corresponding main body in the method 400 for executing the embodiment of the present application, and the foregoing and other operations and/or functions of each unit in the network device 600 are respectively for implementing the corresponding flow in each method in fig. 4, which are not described herein for brevity.

The communication device according to the embodiment of the present application is described above from the perspective of the functional module in conjunction with the accompanying drawings. It should be understood that the functional module may be implemented in hardware, or may be implemented by instructions in software, or may be implemented by a combination of hardware and software modules. Specifically, each step of the method embodiment in the embodiment of the present application may be implemented by an integrated logic circuit of hardware in a processor and/or an instruction in a software form, and the steps of the method disclosed in connection with the embodiment of the present application may be directly implemented as a hardware decoding processor or implemented by a combination of hardware and software modules in the decoding processor. Alternatively, the software modules may be located in a well-established storage medium in the art such as random access memory, flash memory, read-only memory, programmable read-only memory, electrically erasable programmable memory, registers, and the like. The storage medium is located in a memory, and the processor reads information in the memory, and in combination with hardware, performs the steps in the above method embodiments.

For example, the first transmission unit 510, the second transmission unit 520, the first transmission unit 610, and the second transmission unit 620 referred to above may all be implemented by transceivers.

Fig. 7 is a schematic structural diagram of a communication device 700 of an embodiment of the present application.

As shown in fig. 7, the communication device 700 may include a processor 710.

Wherein the processor 710 may call and run computer programs from memory to implement the methods of embodiments of the present application.

As shown in fig. 7, the communication device 700 may also include a memory 720.

The memory 720 may be used for storing instruction information, and may also be used for storing code, instructions, etc. executed by the processor 710. Wherein the processor 710 may call and run a computer program from the memory 720 to implement the method in an embodiment of the application. Memory 720 may be a separate device from processor 710 or may be integrated into processor 710.

As shown in fig. 7, the communication device 700 may also include a transceiver 730.

The processor 710 may control the transceiver 730 to communicate with other devices, and in particular, may send information or data to other devices or receive information or data sent by other devices. Transceiver 730 may include a transmitter and a receiver. Transceiver 730 may further include antennas, the number of which may be one or more.

It should be appreciated that the various components in the communication device 700 are connected by a bus system that includes a power bus, a control bus, and a status signal bus in addition to a data bus.

It should also be understood that the communication device 700 may be a terminal device according to an embodiment of the present application, and the communication device 700 may implement a corresponding flow implemented by the terminal device in each method according to an embodiment of the present application, that is, the communication device 700 according to an embodiment of the present application may correspond to the terminal device 500 according to an embodiment of the present application, and may correspond to a corresponding main body in performing the method 400 according to an embodiment of the present application, which is not described herein for brevity. Similarly, the communication device 700 may be a network device according to an embodiment of the present application, and the communication device 700 may implement a corresponding flow implemented by the network device in each method according to the embodiment of the present application. That is, the communication device 700 according to the embodiment of the present application may correspond to the network device 600 according to the embodiment of the present application, and may correspond to a corresponding main body in performing the method 400 according to the embodiment of the present application, which is not described herein for brevity.

In addition, the embodiment of the application also provides a chip.

For example, the chip may be an integrated circuit chip having signal processing capabilities, and the methods, steps and logic blocks disclosed in the embodiments of the present application may be implemented or performed. The chip may also be referred to as a system-on-chip, a system-on-chip or a system-on-chip, etc. Alternatively, the chip may be applied to various communication devices so that the communication device mounted with the chip can perform the methods, steps and logic blocks disclosed in the embodiments of the present application.

Fig. 8 is a schematic block diagram of a chip 800 according to an embodiment of the application.

As shown in fig. 8, the chip 800 includes a processor 810.

Wherein the processor 810 may call and run a computer program from memory to implement the methods of embodiments of the present application.

As shown in fig. 8, the chip 800 may further include a memory 820.

Wherein the processor 810 may call and run a computer program from the memory 820 to implement the method in embodiments of the present application. The memory 820 may be used for storing instruction information and may also be used for storing code, instructions, etc. for execution by the processor 810. The memory 820 may be a separate device from the processor 810 or may be integrated into the processor 810.

As shown in fig. 8, the chip 800 may further include an input interface 830.

The processor 810 may control the input interface 830 to communicate with other devices or chips, and in particular, may obtain information or data sent by other devices or chips.

As shown in fig. 8, the chip 800 may further include an output interface 840.

The processor 810 may control the output interface 840 to communicate with other devices or chips, and in particular, may output information or data to other devices or chips.

It should be understood that the chip 800 may be applied to a network device in the embodiment of the present application, and the chip may implement a corresponding flow implemented by the network device in each method in the embodiment of the present application, or may implement a corresponding flow implemented by a terminal device in each method in the embodiment of the present application, which is not described herein for brevity.

It should also be appreciated that the various components in the chip 800 are connected by a bus system that includes a power bus, a control bus, and a status signal bus in addition to a data bus.

The processors referred to above may include, but are not limited to:

a general purpose processor, digital signal processor (Digital Signal Processor, DSP), application specific integrated circuit (Application Specific Integrated Circuit, ASIC), field programmable gate array (Field Programmable Gate Array, FPGA) or other programmable logic device, discrete gate or transistor logic device, discrete hardware components, or the like.

The processor may be configured to implement or perform the methods, steps, and logic blocks disclosed in embodiments of the present application. The steps of the method disclosed in connection with the embodiments of the present application may be embodied directly in the execution of a hardware decoding processor, or in the execution of a combination of hardware and software modules in a decoding processor. The software modules may be located in a random access memory, flash memory, read only memory, programmable read only memory or erasable programmable memory, registers, etc. as well known in the art. The storage medium is located in a memory, and the processor reads the information in the memory and, in combination with its hardware, performs the steps of the above method.

The above references to memory include, but are not limited to:

volatile memory and/or nonvolatile memory. The nonvolatile Memory may be a Read-Only Memory (ROM), a Programmable ROM (PROM), an Erasable PROM (EPROM), an Electrically Erasable EPROM (EEPROM), or a flash Memory. The volatile memory may be random access memory (Random Access Memory, RAM) which acts as an external cache. By way of example, and not limitation, many forms of RAM are available, such as Static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double Data Rate SDRAM (Double Data Rate SDRAM), enhanced SDRAM (ESDRAM), synchronous Link DRAM (SLDRAM), and Direct memory bus RAM (DR RAM).

It should be noted that the memory described herein is intended to comprise these and any other suitable types of memory.

There is also provided in an embodiment of the present application a computer-readable storage medium storing a computer program. The computer readable storage medium stores one or more programs, the one or more programs comprising instructions, which when executed by a portable electronic device comprising a plurality of application programs, enable the portable electronic device to perform the method of the embodiments shown in method 400. Optionally, the computer readable storage medium may be applied to a network device in the embodiment of the present application, and the computer program causes a computer to execute a corresponding flow implemented by the network device in each method in the embodiment of the present application, which is not described herein for brevity. Optionally, the computer readable storage medium may be applied to a mobile terminal/terminal device in the embodiment of the present application, and the computer program causes a computer to execute a corresponding procedure implemented by the mobile terminal/terminal device in each method of the embodiment of the present application, which is not described herein for brevity.

A computer program product, including a computer program, is also provided in an embodiment of the present application. Optionally, the computer program product may be applied to a network device in the embodiment of the present application, and the computer program causes a computer to execute a corresponding flow implemented by the network device in each method in the embodiment of the present application, which is not described herein for brevity. Optionally, the computer program product may be applied to a mobile terminal/terminal device in the embodiment of the present application, and the computer program makes a computer execute corresponding processes implemented by the mobile terminal/terminal device in each method of the embodiment of the present application, which are not described herein for brevity.

The embodiment of the application also provides a computer program. The computer program, when executed by a computer, enables the computer to perform the method of the embodiment shown in method 400. Optionally, the computer program may be applied to a network device in the embodiment of the present application, and when the computer program runs on a computer, the computer is caused to execute a corresponding flow implemented by the network device in each method in the embodiment of the present application, which is not described herein for brevity. Optionally, the computer program may be applied to a mobile terminal/terminal device in the embodiment of the present application, and when the computer program runs on a computer, the computer is caused to execute corresponding processes implemented by the mobile terminal/terminal device in each method in the embodiment of the present application, which is not described herein for brevity.

The embodiment of the present application further provides a communication system, which may include the above-mentioned terminal device and network device, so as to form a communication system 100 as shown in fig. 1, which is not described herein for brevity. It should be noted that the term "system" and the like herein may also be referred to as "network management architecture" or "network system" and the like.

It is also to be understood that the terminology used in the embodiments of the present application and the appended claims is for the purpose of describing particular embodiments only, and is not intended to be limiting of the embodiments of the present application. For example, as used in the embodiments of the application and the appended claims, the singular forms "a," "an," "the," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.

Those of skill in the art will appreciate that the elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware, or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the embodiments of the present application. If implemented as a software functional unit and sold or used as a stand-alone product, may be stored on a computer readable storage medium. Based on such understanding, the technical solution of the embodiments of the present application may be embodied in essence or a part contributing to the prior art or a part of the technical solution, in the form of a software product stored in a storage medium, including several instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the method of the embodiments of the present application. And the aforementioned storage medium includes: various media capable of storing program codes, such as a U disk, a mobile hard disk, a read-only memory, a random access memory, a magnetic disk or an optical disk.

Those skilled in the art will further appreciate that, for convenience and brevity, specific working procedures of the above-described system, apparatus and unit may refer to corresponding procedures in the foregoing method embodiments, and are not repeated herein. In the several embodiments provided by the present application, it should be understood that the disclosed systems, devices, and methods may be implemented in other manners. For example, the division of units or modules or components in the above-described apparatus embodiments is merely a logic function division, and there may be another division manner in actual implementation, for example, multiple units or modules or components may be combined or may be integrated into another system, or some units or modules or components may be omitted or not performed. As another example, the units/modules/components described above as separate/display components may or may not be physically separate, i.e., may be located in one place, or may be distributed over multiple network elements. Some or all of the units/modules/components may be selected according to actual needs to achieve the objectives of the embodiments of the present application. Finally, it is pointed out that the coupling or direct coupling or communication connection between the various elements shown or discussed above can be an indirect coupling or communication connection via interfaces, devices or elements, which can be in electrical, mechanical or other forms.

The foregoing is merely a specific implementation of the embodiment of the present application, but the protection scope of the embodiment of the present application is not limited thereto, and any person skilled in the art can easily think about changes or substitutions within the technical scope of the embodiment of the present application, and the changes or substitutions are covered by the protection scope of the embodiment of the present application. Therefore, the protection scope of the embodiments of the present application shall be subject to the protection scope of the claims.

Claims

A CG resource maintenance method, comprising:

the terminal equipment performs small data transmission SDT according to the configuration authorization CG resource;

under the condition that the first timer is overtime, the terminal equipment carries out subsequent transmission of the SDT according to the first resource;

wherein the first resource comprises at least one of the following resources: and the CG resource, the dynamic scheduling DG resource and the random access small data transmission RA-SDT resource.
The method of claim 1, wherein, in the case where the first resource includes the CG resource, the terminal device performs subsequent transmissions of the SDT according to the first resource, including:

the terminal equipment starts or restarts the first timer;

and the terminal equipment uses the CG resource to transmit SDT.
The method according to claim 2, wherein the terminal device starts or restarts the first timer, comprising:

starting or restarting the first timer when at least one of the following conditions is met:

there is data and/or signaling being transmitted;

the presence of successfully transmitted data and/or signaling;

the variation of the signal quality of the serving cell exceeds a pre-configured threshold;

and verifying that the CG resource is valid.
The method of claim 3, wherein the verifying that CG resources are valid comprises: and the CG resource is validated each time in the CG-SDT flow.
A method according to claim 3, wherein the data and/or signalling being transmitted comprises at least one of:

data and/or signaling to be transmitted;

data and/or signaling of correct feedback is not received.
A method according to claim 3, wherein the successfully transmitted data packets and/or signalling comprises: and successfully receiving feedback information of successful transmission of the N-1 data packet, wherein N represents whether the next data packet to be determined is successfully transmitted, and N is greater than or equal to 2.
The method according to any of the claims 1 to 6, wherein in case the first resource comprises the DG resource, the terminal device performs a subsequent transmission of the SDT according to the first resource, comprising:

The terminal equipment releases the CG resource;

and the terminal equipment performs subsequent transmission of the SDT according to the DG resource.
The method of claim 7, wherein the method further comprises:

the terminal device transmits a first indication information,

the first indication information is used for indicating at least one of the following:

the first timer has been started or restarted;

the CG resource has been released;

indicating that subsequent transmissions of the SDT use CG resource transmissions;

indicating that subsequent transmissions of the SDT use DG resource transmissions.
The method of claim 8, wherein the first indication information is carried in at least one of:

a medium access control unit MAC CE, uplink control information UCI, and radio resource control RRC signaling.
The method of claim 9, wherein the MCE CE includes a buffer status report BSR and/or the RRC signaling includes an RRC resume request.
The method according to any of claims 1 to 10, wherein, in case the first resource comprises the RA-SDT resource, the terminal device performs a subsequent transmission of the SDT according to the first resource, comprising:

The terminal equipment releases the CG resource;

and the terminal equipment performs subsequent transmission of the SDT according to the RA-SDT resource.
The method according to any of claims 1 to 11, wherein the first timer is a timer for maintaining an advanced timing, TA, or TA during operation of the first timer is active.
The method according to any of claims 1 to 12, wherein the first timer is a timer for SDT configured by the network device in a connected state or the first timer is a timer for SDT configured by the network device through a radio resource control, RRC, release message.
The method according to any one of claims 1 to 13, wherein the first timer is a time alignment timer TAT, or wherein the first timer is a different timer than the TAT.
The method according to any one of claims 1 to 14, further comprising:

it is determined whether to trigger a configuration authorization small data transfer CG-SDT procedure.
The method of claim 15, wherein the determining whether to trigger the configuration grant small data transfer CG-SDT procedure comprises:

Determining to trigger the CG-SDT process if at least one of the following conditions is satisfied:

the data volume of the uplink data is smaller than or equal to the SDT threshold;

the variation of the signal quality of the serving cell is less than or equal to a pre-configured threshold;

CG resources available on the selected carrier;

CG resources available on the selected beam;

the time alignment timer TAT is in the run-time.
The method according to any one of claims 1 to 16, further comprising:

the first timer is started and/or restarted.
The method according to claim 17, wherein said starting and/or restarting said first timer comprises:

starting and/or restarting the first timer when at least one of the following conditions is met:

when receiving the RRC release message;

when the terminal equipment enters a deactivation state;

triggering the SDT flow;

triggering the CG-SDT flow of configuration authorization small data transmission;

verifying that CG resources are valid;

each time CG resources are verified to be valid in the CG-SDT flow.
A CG resource maintenance method, comprising:

the network equipment performs small data transmission SDT according to the configuration authorization CG resource;

The network equipment carries out subsequent transmission of the SDT according to the first resource;

wherein the first resource comprises at least one of the following resources: and the CG resource, the dynamic scheduling DG resource and the random access small data transmission RA-SDT resource.
The method of claim 19, wherein the network device performing subsequent transmissions of the SDT in accordance with the first resource comprises:

the network equipment receives first indication information;

the network equipment adopts the CG resource or the DG resource to carry out subsequent transmission of the SDT according to the first indication information;

wherein the first indication information is used for indicating at least one of the following:

the first timer has been started or restarted;

the CG resource has been released;

indicating that subsequent transmissions of the SDT use CG resource transmissions;

indicating that subsequent transmissions of the SDT use DG resource transmissions.
The method of claim 20, wherein the first indication information is carried in at least one of:

a medium access control unit MAC CE, uplink control information UCI, and radio resource control RRC signaling.
The method of claim 21, wherein the MCE CE includes a buffer status report BSR and/or the RRC signaling includes an RRC resume request.
The method of any of claims 19-21, wherein, in the case where the first resource comprises the DG resource, the network device performs subsequent transmissions of the SDT according to the first resource, comprising:

and if the first timer is overtime, adopting the DG resource to carry out subsequent transmission of the SDT.
The method according to any one of claims 19 to 23, further comprising:

and sending a Radio Resource Control (RRC) release message, wherein the RRC release message is used for indicating the terminal equipment to enter an RRC deactivation state, and comprises configuration information for configuring authorized CG resources and/or configuration information of a first timer.
The method of claim 23 or 24, wherein the first timer is a timer for maintaining an advanced timing, TA, or TA during operation of the first timer is active.
The method according to any of claims 23 to 25, wherein the first timer is a timer for SDT configured by the network device in a connected state or configured by the network device through a radio resource control, RRC, release message.
The method of any one of claims 23 to 26, wherein the first timer is a time aligned timer TAT or wherein the first timer is a different timer than the TAT.
A terminal device, comprising:

the first transmission unit is used for transmitting the SDT according to the configuration authorization CG resource;

the second transmission unit is used for carrying out subsequent transmission of the SDT according to the first resource under the condition that the first timer is overtime;

wherein the first resource comprises at least one of the following resources: and the CG resource, the dynamic scheduling DG resource and the random access small data transmission RA-SDT resource.
A network device, comprising:

the first transmission unit is used for transmitting the SDT according to the configuration authorization CG resource;

a second transmission unit, configured to perform subsequent transmission of the SDT according to the first resource;

wherein the first resource comprises at least one of the following resources: and the CG resource, the dynamic scheduling DG resource and the random access small data transmission RA-SDT resource.
A terminal device, comprising:

a processor and a memory for storing a computer program, the processor being for invoking and running the computer program stored in the memory to perform the method of any of claims 1 to 18.
A network device, comprising:

a processor and a memory for storing a computer program, the processor being for invoking and running the computer program stored in the memory to perform the method of any of claims 19 to 27.
A chip, comprising:

a processor for calling and running a computer program from a memory, causing a device on which the chip is mounted to perform the method of any one of claims 1 to 18 or the method of any one of claims 19 to 27.
A computer readable storage medium storing a computer program for causing a computer to perform the method of any one of claims 1 to 18 or the method of any one of claims 19 to 27.
A computer program product comprising computer program instructions for causing a computer to perform the method of any one of claims 1 to 18 or the method of any one of claims 19 to 27.
A computer program, characterized in that the computer program causes a computer to perform the method of any one of claims 1 to 18 or the method of any one of claims 19 to 27.