WO2023108474A1

WO2023108474A1 - Communication method and apparatus

Info

Publication number: WO2023108474A1
Application number: PCT/CN2021/138308
Authority: WO
Inventors: 林雪; 刘洋; 尤心
Original assignee: Oppo广东移动通信有限公司
Priority date: 2021-12-15
Filing date: 2021-12-15
Publication date: 2023-06-22

Abstract

Embodiments of the present application provide a communication method and apparatus. The method is applied to a terminal device, and comprises: when the successfully completed small data transmission (SDT) process comprises an SDT exception, recording SDT process parameters; and reporting the SDT process parameters to a network device. The SDT process parameters are recorded and reported when the SDT process is successfully completed.

Description

Communication method and device

technical field

The present application relates to the communication field, and in particular to a communication method and device.

Background technique

At present, for terminal devices with small data volume and low transmission frequency, a small data transmission (small data transmission, SDT) scheme is proposed, so that the terminal device can complete the SDT process in the inactive state.

In some scenarios, there are still corresponding problems to be optimized in the successfully completed SDT process. Since SDT is a new feature introduced in R17, there is currently no plan for recording and reporting problems in the successfully completed SDT process. Therefore, it is necessary to provide a solution to realize process recording and reporting when the SDT process is successfully completed, so as to facilitate the optimization of the SDT process.

Contents of the invention

Embodiments of the present application provide a communication method and device to realize process recording and reporting when the SDT process is successfully completed.

In the first aspect, the embodiment of the present application provides a communication method applied to a terminal device, including:

Record SDT process parameters when SDT exceptions are included in the successfully completed small data transfer SDT process;

Report the SDT process parameters to the network device.

In a possible implementation manner, the SDT abnormality includes at least one of the following:

The duration between the moment when the SDT process is completed and the overtime of the SDT failure detection timer is less than or equal to the first duration;

A random access problem occurs on the terminal device;

The terminal device triggers a random access process during the SDT process based on pre-configured resources;

The terminal device triggers a random access-based SDT process when pre-configured resources are configured.

In a possible implementation manner, the first duration is a duration configured by the network device.

In a possible implementation manner, the SDT process parameters include at least one of the following:

A first parameter, where the first parameter is a configuration parameter that triggers the SDT process;

A second parameter, where the second parameter is a radio link parameter of the SDT process;

A third parameter, where the third parameter is a resource configuration parameter of the SDT process.

In a possible implementation manner, the first parameter includes at least one of the following:

The amount of data to be transmitted when the terminal device triggers the SDT process;

First indication information, where the first indication information is used to indicate whether new SDT data arrives during the SDT process;

The duration of the SDT failure detection timer.

In a possible implementation manner, the second parameter includes at least one of the following:

Downlink reference signal measurement results;

second indication information, where the second indication information is used to indicate whether the terminal device executes the SDT process multiple times;

third indication information, where the third indication information is used to indicate whether the terminal device triggers a random access process during the SDT process based on pre-configured resources;

Fourth indication information, where the fourth indication information is used to indicate whether a random access problem occurs on the terminal device.

In a possible implementation manner, the downlink reference signal is a synchronization signal block SSB and/or a positioning reference signal PRS.

In a possible implementation manner, the second indication information includes resource configuration information of the SDT process based on pre-configured resources; or, the second indication information includes resource configuration information of the SDT process based on random access .

In a possible implementation manner, the third parameter includes fifth indication information, where:

The fifth indication information is used to indicate whether the terminal device triggers an SDT process based on random access when pre-configured resources are configured.

In a possible implementation manner, the method also includes:

The terminal device receives a first radio resource control RRC message from the network device while the SDT failure detection timer is running.

In a possible implementation manner, the first RRC message includes any of the following:

RRC recovery message;

RRC release message;

RRC state pending configuration message.

In a possible implementation manner, the start time of the SDT failure detection timer is the time when the terminal device initiates the SDT process;

The end time of the SDT failure detection timer is the time when the terminal device receives the first RRC message.

In a possible implementation manner, the reporting the SDT process parameters to the network device includes:

Sending a terminal information response message to the network device, where the terminal information response message includes the SDT process parameters, and the terminal information response message is a response message to the terminal information request message.

In the second aspect, the embodiment of the present application provides a communication method applied to a network device, including:

An SDT process parameter reported by the terminal device is received, where the SDT process parameter indicates that the SDT process successfully completed by the terminal device includes an SDT exception.

The duration of the SDT failure detection timer.

Downlink reference signal measurement results;

In a possible implementation manner, the downlink reference signal is SSB and/or PRS.

In a possible implementation manner, the receiving the SDT process parameters reported by the terminal device includes:

Receive a terminal information response message from the terminal device, the terminal information response message includes the SDT process parameters, and the terminal information response message is a response message to the terminal information request message.

In a third aspect, the embodiment of the present application provides a communication device, including:

A recording module, configured to record SDT process parameters when an SDT exception is included in a successfully completed SDT process;

A reporting module, configured to report the SDT process parameters to the network device.

A random access problem occurs on the terminal device;

The duration of the SDT failure detection timer.

Downlink reference signal measurement results;

In a possible implementation manner, a receiving module is also included, and the receiving module is used for:

A first RRC message is received from the network device while an SDT failure detection timer is running.

RRC recovery message;

RRC release message;

RRC state pending configuration message.

The end time of the SDT failure detection timer is the time when the terminal equipment receives the first RRC message.

In a possible implementation manner, the reporting module is specifically configured to:

In a fourth aspect, the embodiment of the present application provides a communication device, including:

The receiving module is configured to receive an SDT process parameter reported by the terminal device, where the SDT process parameter indicates that the SDT process successfully completed by the terminal device includes an SDT exception.

The duration of the SDT failure detection timer.

Downlink reference signal measurement results;

In a possible implementation manner, the receiving module is specifically configured to:

In a fifth aspect, the embodiment of the present application provides a terminal device, including: a transceiver, a processor, and a memory;

the memory stores computer-executable instructions;

The processor executes the computer-executable instructions stored in the memory, so that the processor executes the communication method according to any one of the first aspect.

In a sixth aspect, the embodiment of the present application provides a network device, including: a transceiver, a processor, and a memory;

the memory stores computer-executable instructions;

The processor executes the computer-executable instructions stored in the memory, so that the processor executes the communication method according to any one of the second aspect.

In a seventh aspect, an embodiment of the present application provides a computer-readable storage medium, where computer-executable instructions are stored in the computer-readable storage medium, and when the computer-executable instructions are executed by a processor, they are used to implement the first aspect or The communication method according to any one of the second aspect.

In an eighth aspect, an embodiment of the present application provides a computer program product, including a computer program. When the computer program is executed by a processor, the communication method according to any one of the first aspect or the second aspect is implemented.

In the communication method and device provided by the embodiments of the present application, when the successfully completed SDT process includes an SDT abnormality, the terminal device records the SDT process parameters, and then reports the SDT process parameters to the network device. When the SDT process includes an SDT exception, it indicates that although the SDT process is successfully completed, there are problems to be optimized in the SDT process. Therefore, the terminal device records the SDT process parameters and reports them to the network device, so that the network device can discover SDT according to the SDT process parameters. problems in the process, thereby helping network devices to optimize SDT resources and parameter configurations.

Description of drawings

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

Fig. 2 is a kind of signaling flowchart based on SON reporting information;

FIG. 3 is a schematic flowchart of a communication method provided in an embodiment of the present application;

FIG. 4 is a schematic flowchart of a communication method provided by an embodiment of the present application;

FIG. 5 is a schematic structural diagram of a communication device provided by an embodiment of the present application;

FIG. 6 is a schematic structural diagram of a communication device provided by an embodiment of the present application;

FIG. 7 is a schematic structural diagram of a terminal device provided in an embodiment of the present application;

FIG. 8 is a schematic structural diagram of a network device provided by an embodiment of the present application.

Detailed ways

In order to better understand the technical solutions of the present application, the related concepts and related technologies involved in the present application are introduced below.

Terminal equipment: usually has wireless transceiver function, terminal equipment can be deployed on land, including indoor or outdoor, handheld, wearable or vehicle; can also be deployed on water (such as ships, etc.); can also be deployed in the air (such as aircraft, balloons, etc.) and satellites, etc.). The terminal device may be a mobile phone, a tablet computer (Pad), a computer with a wireless transceiver function, a virtual reality (virtual reality, referred to as VR) terminal device, an augmented reality (augmented reality, referred to as AR) terminal device, an industrial Wireless terminals in industrial control, vehicle terminal equipment, wireless terminals in self driving, wireless terminal equipment in remote medical, wireless terminal equipment in smart grid, Wireless terminal devices in transportation safety, wireless terminal devices in smart city, wireless terminal devices in smart home, wearable terminal devices, etc. The terminal equipment involved in the embodiments of the present application may also be referred to as terminal, user equipment (UE), access terminal equipment, vehicle-mounted terminal, industrial control terminal, UE unit, UE station, mobile station, mobile station, remote station , remote terminal equipment, mobile equipment, UE terminal equipment, wireless communication equipment, UE agent or UE device, etc. Terminal equipment can also be fixed or mobile.

Network device: generally has a wireless transceiver function, and the network device may have a mobile feature, for example, the network device may be a mobile device. Optionally, the network equipment can be a satellite or a balloon station. For example, the satellite can be a low earth orbit (low earth orbit, LEO) satellite, a medium earth orbit (medium earth orbit, MEO) satellite, a geosynchronous earth orbit (geosynchronous earth orbit, GEO) satellite, a high elliptical orbit (High Elliptical Orbit, HEO) satellite. ) Satellite etc. For example, the orbital altitude of LEO satellites usually ranges from 500 km to 1500 km, and the orbital period (period around the earth) is about 1.5 hours to 2 hours. The signal propagation delay of single-hop communication between users is about 20ms, and the single-hop communication delay between users refers to the transmission delay between terminal equipment and network equipment, or the delay between network equipment and transmission equipment. The maximum visible time of the satellite is about 20 minutes. The maximum visible time refers to the longest time that the beam of the satellite covers a certain area on the ground. The LEO satellite is moving relative to the ground. As the satellite moves, the ground area it covers is also change. The signal propagation distance of LEO satellites is short, the link loss is small, and the requirements for the transmission power of terminal equipment are not high. The orbital altitude of GEO satellites is usually 35786km, and the orbital period is 24 hours. The signal propagation delay for single-hop communication between users is about 250ms. In order to ensure satellite coverage and improve the system capacity of the communication network, satellites can use multiple beams to cover the ground. For example, a satellite can form dozens or hundreds of beams to cover the ground, and a beam can cover tens to hundreds of kilometers in diameter. the ground area. Of course, the network device can also be a base station installed on land, water, etc. For example, the network device can be a next generation base station (next generation NodeB, gNB) or a next generation evolved base station (next generation-evolved NodeB, ng-eNB) . Among them, gNB provides UE with new air interface (new radio, NR) user plane function and control plane function, ng-eNB provides UE with evolved universal terrestrial radio access (E-UTRA) user plane Functions and control plane functions. It should be noted that gNB and ng-eNB are just names used to indicate base stations supporting 5G network systems, and are not restrictive. The network equipment can also be a base station (base transceiver station, BTS) in the GSM system or a CDMA system, or a base station (nodeB, NB) in a WCDMA system, or an evolved base station (evolutional node B, NB) in an LTE system. eNB or eNodeB). Alternatively, the network device can also be a relay station, an access point, a vehicle-mounted device, a wearable device, and a network side device in a network after 5G or a network device in a future evolved PLMN network, and a road site unit (RSU). )wait.

RRC state: The terminal device and the network device communicate with each other through the wireless channel and exchange information with each other. Therefore, a control mechanism is needed between the terminal device and the network device to exchange information and reach an agreement. This control mechanism is RRC. In LTE, RRC states include RRC idle state and RRC connected state. In 5G NR, in addition to RRC idle state (RRC idle) and RRC connected state (RRC connected), RRC inactive state (RRC inactive) is also introduced. In the RRC inactive state, the terminal device is in a non-connected state with the network device, but the context of the terminal device is still partially reserved. At the same time, in the RRC inactive state, the terminal device can quickly switch to the RRC connection state through paging messages, etc. .

Random access: refers to the process before the terminal device transmits the random access preamble and establishes a basic signaling connection with the network device. It refers to the process in which the terminal device establishes a wireless link with the network device and obtains or restores uplink synchronization. Random access is a key step in the mobile communication system, making it possible for terminal equipment and network equipment to establish communication connections. The terminal device performs information interaction with the network device through random access, and can also realize uplink synchronization through random access. In the actual application process, the terminal device may initiate random access in various possible scenarios. For example, the various possible scenarios may include at least one of the following scenarios: (1) The state of the terminal device is changed from the radio resource control ( After the radio resource control (RRC) idle state is switched to the RRC connection state, the terminal device initiates random access when establishing a wireless link with the network device. (2) After the wireless link between the terminal device and the network device fails, the terminal device initiates random access when re-establishing the RRC connection with the network device. (3) Initiate random access when the terminal device needs to establish uplink synchronization with the new cell. (4) When the terminal device is in the RRC connection state and the uplink is not synchronized, if there is uplink or downlink data arriving, random access is initiated. (5) Random access is initiated when the terminal device is in the RRC connection state, but no dedicated resources for sending scheduling requests have been configured for the terminal device on the physical uplink control channel (PUCCH). (6) Initiate random access when the scheduling request fails. (7) Initiate random access when RRC requests during synchronous reconfiguration. (8) Random access is initiated when the state of the terminal equipment is switched from the RRC inactive state to the RRC connected state. (9) Initiate random access when time alignment is established when the second cell is added. (10) Initiate random access when requesting other system information except the master information block (MIB) and system information block (SIB). (11) Initiate random access when the beam fails to recover.

RA-SDT: Small data transmission based on random access. The data transmission method based on random access is a way for terminal equipment to complete uplink data transmission through information interaction in the process of establishing a connection with network equipment through random access.

CG-SDT: small data transmission based on pre-configured resources, data transmission based on pre-configured resources and data transmission based on random access are all data transmission methods of terminal equipment in the inactive state, among which the data transmission based on pre-configured resources The data transmission method is to complete the transmission of uplink data according to the pre-configured resources allocated by the network device to the terminal device in advance

RSRP: reference signal receiving power, reference signal receiving power.

RRC: Radio Resource Control, radio resource control.

Suspend state: Suspend state, the context of a terminal device in the suspend state is stored in the RAN and UE, so that the UE can quickly switch to the connected state.

In addition, it should be understood that in the description of this application, words such as "first" and "second" are only used for the purpose of distinguishing descriptions, and cannot be understood as indicating or implying relative importance, nor can they be understood as indicating Or to imply the order, nor can it be understood as indicating or implying the relationship between similar nouns.

Below, with reference to FIG. 1 , the applicable scenarios of the communication method in this application will be described.

FIG. 1 is a schematic diagram of an application scenario provided by an embodiment of the present application. Referring to FIG. 1 , a network device 101 and a terminal device 102 are included, and wireless communication and data transmission can be performed between the network device 101 and the terminal device 102 .

Wherein, the network including the network device 101 and the terminal device 102 may also be referred to as a non-terrestrial communication network (Non-Terrestrial Network, NTN), where the NTN refers to the communication between the terminal device and the satellite (also referred to as a network device). network.

It can be understood that the technical solutions of the embodiments of the present application can be applied to new radio (New Radio, NR) communication technology, and NR refers to a new generation of wireless access network technology, which can be applied to future evolution networks, such as the future fifth generation In the mobile communication (the 5th Generation Mobile Communication, 5G) system. The solutions in the embodiments of the present application can also be applied to other wireless communication networks such as Wireless Fidelity (WIFI) and Long Term Evolution (LTE), and the corresponding names can also be used in other wireless communication networks. The name of the function to substitute.

The network architecture and business scenarios described in the embodiments of the present application are for more clearly illustrating the technical solutions of the embodiments of the present application, and do not constitute limitations on the technical solutions provided by the embodiments of the present application. For the evolution of architecture and the emergence of new business scenarios, the technical solutions provided by the embodiments of this application are also applicable to similar technical problems.

In the 5G NR system, the RRC state is divided into three types, which are RRC idle state, RRC inactive state and RRC connected state. 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 the UE 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. Based on this, the SDT process in the RRC inactive state is proposed. SDT in the RRC inactive state includes SDT based on random access and SDT based on pre-configured resources. Further, Rel-16 introduces a two-step random access process. Therefore, small data transmission based on random access can further It is divided into small data transmission based on four-step random access and small data transmission based on two-step random access.

For a UE in the RRC inactive state, the SDT process can be triggered when the following conditions are met:

(1) The data to be transmitted comes from a radio bearer that can trigger SDT, such as signaling radio bearer (signalling radio bearer, SRB), data radio bearer (data radio bearer, DRB), etc.;

(2) The amount of data to be transmitted is less than the pre-configured data amount threshold of the network device;

Since the SDT process is aimed at data transmission of UEs with small data volume and low transmission frequency, there is a certain limit on the amount of data to be transmitted, and the SDT process can only be initiated when the amount of data to be transmitted is less than the pre-configured data volume threshold.

(3) The downlink RSRP measurement result is greater than the RSRP threshold pre-configured by the network device;

(4) There is a valid SDT resource.

The SDT resource is used for the terminal device to execute the SDT process, and the SDT resource may include RA-SDT resource and/or CG-SDT resource. The RA-SDT resource can be used for the SDT process based on random access, and the CG-SDT resource can be used for the SDT process based on pre-configured resources. The RA-SDT resources are public resources at the cell level, and there is competition for uplink resources, while the CG-SDT resources are resources configured for UEs through dedicated signaling, and there is no competition for uplink resources in the CG-SDT resources.

When the UE in the RRC inactive state satisfies the above conditions, the SDT process is triggered. For condition (4), when the UE is only configured with RA-SDT resources, the UE can try the SDT process based on random access; when the UE is only configured with CG-SDT resources, the UE can try the SDT process based on pre-configured resources; When the UE is configured with RA-SDT resources and CG-SDT resources at the same time, the UE first determines whether the CG-SDT resources are valid.

The judgment conditions for the UE to judge whether the CG-SDT resources are valid include:

(1) Whether there is a valid tracking area (Tracking Area, TA).

The way of judging whether there is a valid TA may include:

a. The SDT-TA timer (SDT-TA Timer, SDT-TAT) is running.

SDT-TAT is a timer specially introduced in the CG-SDT process to maintain the validity of TA. It starts when the terminal device receives the CG-SDT resource. When the terminal device has an uplink data transmission requirement, it can judge whether the SDT-TAT is in the running state. If the SDT-TAT is in the running state, it means that the TA is valid.

b. The change amount of RSRP is less than or equal to the pre-configured threshold.

When the SDT-TAT is in the running state, and/or, the variation of RSRP is less than or equal to the pre-configured threshold, there is a valid TA.

(2) Whether there are CG-SDT resources on the selected carrier.

The selected carrier may include normal uplink (normal uplink, NUL) or supplementary uplink (supplementary uplink, SUL).

(3) Whether there is a CG-SDT resource on the selected synchronization signal block (Synchronization Signal Block, SSB).

Since not every SSB has a CG-SDT resource, it is necessary to determine whether the selected SSB has a CG-SDT resource.

When the configured CG-SDT resources meet the above conditions, the CG-SDT resources are valid, and at this time, the UE can perform the SDT process based on the pre-configured resources. When the configured CG-SDT resources do not meet the above conditions, the CG-SDT resources are invalid, and at this time, the UE needs to further determine whether the RA-SDT resources are valid. The manner of judging whether the RA-SDT resource is valid, for example, may judge whether the RA-SDT resource exists on the selected carrier. If it exists, the RA-SDT resource is valid; if it does not exist, the RA-SDT resource is invalid. If the RA-SDT resource is valid, the UE can perform the SDT process based on random access; if the RA-SDT resource is invalid, the UE initiates the RRC recovery process, enters the RRC connected state, and then performs the SDT process in the connected state.

In the foregoing embodiments, the process of triggering the SDT is introduced, and the process of the terminal device reporting information to optimize network parameter configuration will be described below in conjunction with FIG. 2 . The process of reporting information by the terminal device can be realized based on a self-organizing network (Self-Organizing Network, SON).

Figure 2 is a signaling flow chart based on SON reporting information, as shown in Figure 2, including:

S21. The network device sends a terminal information request message (UE Information Request) to the terminal device.

The network device sends a terminal information request message to the terminal device in the RRC connection state, and the terminal information request message includes the type of information that the network device needs to report.

For example, the type of information that needs to be reported in the terminal information request message may include ra-ReportReq, rlf-ReportReq, etc. When the corresponding parameter field is set to true, it means that the network device needs the terminal device to report the corresponding information. For example, when the parameter field corresponding to ra-ReportReq is set to true, it means that the network device needs the terminal device to report information related to the random access process; when the parameter field corresponding to rlf-ReportReq is set to true, it means that the network device needs the terminal device to report the wireless Link-related information.

S22. The terminal device sends a terminal information response message (UE Information Response) to the network device.

The terminal device may feed back a corresponding type of report to the network device through a terminal information response message according to the instruction of the network device.

According to different events, the terminal device triggers and records reports of the above information types. Taking ra-ReportReq as an example, the terminal device stores information related to the random access process in the VarRA-Report list maintained by the terminal device after each successful completion of the random access process. When receiving the report request from the network device, report the recorded information related to the random access process to the network device.

When the terminal device and the network device in the RRC connection state perform data transmission, the parameters of the data transmission process can be reported according to the scheme illustrated in Figure 2, so as to realize the optimization of the data transmission process. As for the SDT process, in some scenarios, there are still corresponding problems to be optimized in the successfully completed SDT process. Since SDT is a new feature introduced in R17, there is currently no plan to record and report the problems existing in the SDT process . Based on this, the embodiment of the present application provides a solution to realize recording and reporting in the successfully completed SDT process.

Fig. 3 is a schematic flow chart of a communication method provided in the embodiment of the present application. As shown in Fig. 3, the method may include:

S31. When the successfully completed SDT process includes an SDT exception, the terminal device records the SDT process parameters.

In the embodiment of the present application, the SDT process is completed when the terminal device is in the RRC inactive state, and the SDT process may be a random access-based SDT process, or a pre-configured resource-based SDT process. In some scenarios, although the SDT process is successfully completed, there are SDT exceptions in the SDT process, and these SDT exceptions are potential problems in the SDT process.

In order to optimize for potential problems in the SDT process, when the SDT exception is included in the successfully completed SDT process, the terminal device records the SDT process parameters.

S32. The terminal device reports the SDT process parameters to the network device.

After the terminal device records the SDT process parameters, it can report the SDT process parameters to the network device, and the reporting process can be completed based on the SON framework.

S33. The network device receives the SDT process parameter.

After receiving the SDT process parameters, the network device can analyze the potential problems that need to be optimized in the successfully completed SDT process according to the SDT process parameters, so as to perform corresponding optimization processing for these potential problems.

In the communication method provided by the embodiment of the present application, when the successfully completed SDT process includes an SDT abnormality, the terminal device records the SDT process parameters, and then reports the SDT process parameters to the network device. When the SDT process includes an SDT exception, it indicates that although the SDT process is successfully completed, there are problems to be optimized in the SDT process. Therefore, the terminal device records the SDT process parameters and reports them to the network device, so that the network device can discover SDT according to the SDT process parameters. problems in the process, thereby helping network devices to optimize SDT resources and parameter configurations.

In a possible implementation manner, the terminal device may report the SDT process parameters based on the SON framework illustrated in FIG. 2 , which will be introduced in conjunction with FIG. 4 below.

Fig. 4 is a schematic flow diagram of a communication method provided in the embodiment of the present application, as shown in Fig. 4 , including:

S41. The network device sends a terminal information request message to the terminal device.

When the terminal device is in the RRC connection state, the network device may send a terminal information request message to the terminal device, and the terminal information request message includes information types that the network device needs to report from the terminal device.

S42. The terminal device executes the SDT process.

In the embodiment of the present application, the terminal device is in the RRC inactive state when executing the SDT process. The SDT process initiated by the terminal device may be a pre-configured resource-based SDT process, or a random access-based SDT process.

When the terminal device initiates the SDT process, the terminal device will start the SDT failure detection timer synchronously. The duration of the SDT failure detection timer can be configured by the network device, and the terminal device executes the SDT process during the operation of the SDT failure detection timer.

When the terminal device receives the first RRC message sent from the network device during the operation of the SDT failure detection timer, it means that the SDT process is successfully completed. At this time, the terminal device can stop running the SDT failure detection timer. The start time of the SDT failure detection timer is the time when the terminal device sends the SDT process, and the end time of the SDT failure detection timer is the time when the terminal device receives the first RRC message, wherein the first RRC message can be RRC recovery message, RRC Any one of the release message and the RRC state suspension configuration message. If the terminal device has not received the first RRC message after the SDT failure detection timer elapses, it is considered that the SDT process has not been successfully completed.

S43. When the successfully completed SDT process includes an SDT exception, the terminal device records the SDT process parameters.

In the embodiment of the present application, the terminal device has successfully completed the SDT process, that is, it has successfully received the first RRC message during the operation of the SDT failure detection timer. When the SDT process includes an SDT exception, the terminal device will record the SDT process parameters to report to the network device.

Abnormal event 1: the time period between the time when the SDT process is completed and the timeout time of the SDT failure detection timer is less than or equal to the first time period.

The first duration is the duration configured by the network device, the timeout time of the SDT failure detection timer is the time when the running duration of the SDT failure detection timer reaches the configured duration, and the time when the SDT process is completed is when the terminal device receives the first RRC message time.

Since the terminal equipment receives the first RRC message during the operation of the SDT failure detection timer, the SDT process is successfully completed. , indicating that the SDT process is successfully completed when the SDT failure detection timer is about to expire. The abnormal event one may indicate that the duration configuration of the SDT failure detection timer is unreasonable, and may indicate that there are some reasons that cause the time for the SDT to complete successfully to be extended, and so on. Therefore, when an abnormal event 1 occurs in a successfully completed SDT process, the terminal device will record the SDT process parameters.

Abnormal event 2: A random access problem occurs on the terminal device.

The SDT process initiated by the terminal device may be a pre-configured resource-based SDT process, or a random access-based SDT process. During the SDT process, if the terminal initiates random access and a random access problem occurs, it is considered that there is an SDT abnormality in the SDT process.

The random access problem may be, for example, that the number of times the terminal device attempts to initiate random access reaches a preconfigured maximum number of times. The pre-configured maximum number of times can be configured by the network device. When the terminal device initiates the random access process, if the random access fails, the terminal device will try to initiate the random access again. For example, if the pre-configured maximum number of times is 8, and the terminal device fails to try the random access process for many times during the SDT process, when the number of random access attempts of the terminal device reaches 8 times, it is determined that a random access process has occurred on the terminal device. In case of an entry problem, abnormal event 2 occurs in the successfully completed SDT process at this time, and the terminal device will record the SDT process parameters.

Abnormal event 3: The terminal device triggers a random access process during the SDT process based on pre-configured resources.

As an example in the above embodiment, when the terminal device is configured with CG-SDT resources and RA-SDT resources at the same time, the terminal device first determines whether the CG-SDT resource is valid, and if it is valid, the terminal device initiates an SDT process based on pre-configured resources, If it is invalid, the terminal device judges whether the RA-SDT resource is valid, and initiates a random access-based SDT process if it is valid.

When the terminal device initiates the SDT process based on the pre-configured resources, it indicates that the CG-SDT resources are initially determined to be valid, and the SDT process based on the pre-configured resources will be initiated only on the premise that the CG-SDT resources are valid. During the SDT process, the terminal device triggers the random access process. It is possible that during the execution of the SDT process, when the CG-SDT resource is determined to be valid again, the CG-SDT resource is determined to be invalid, and the random access process is triggered at this time. For example, when there is no suitable SSB, the terminal device triggers a random access process in the SDT process based on pre-configured resources. At this time, abnormal event three occurs in the successfully completed SDT process, and the terminal device will record the SDT process parameters.

Abnormal event 4: The terminal device triggers the SDT process based on random access when pre-configured resources are configured.

When the terminal device is configured with CG-SDT resources and RA-SDT resources at the same time, the terminal device first judges whether the CG-SDT resource is valid. If it is valid, the terminal device initiates the SDT process based on the pre-configured resources. If it is invalid, the terminal device judges the RA - Whether the SDT resource is valid, and initiate a random access-based SDT process if valid.

Therefore, when the terminal device is configured with pre-configured resources, if a random access-based SDT process is triggered, it means that the pre-configured resources are invalid, and the pre-configured resources allocated to the terminal device have not been effectively used. At this time, when abnormal event 4 occurs in the successfully completed SDT process, the terminal device will record the SDT process parameters.

In the above embodiments, the SDT exceptions included in the successfully completed SDT process, that is, exception event 1 to exception event 4, are introduced. When at least one of abnormal event 1 to abnormal event 4 occurs in the SDT process, the terminal device records the SDT process parameters. Wherein, the SDT process parameters include at least one of the first parameter, the second parameter and the third parameter.

The first parameter is a configuration parameter triggering the SDT process, and is used to assist the network device in judging whether the configuration parameter triggering the SDT process is reasonable.

The first parameter may include at least one of the following:

a. The amount of data to be transmitted when the terminal device triggers the SDT process.

The amount of data to be transmitted when the terminal device triggers the SDT process will affect the duration of the SDT process. When the amount of data to be transmitted is large, the SDT process takes a relatively longer time. When the amount of data to be transmitted is small, the SDT process It takes relatively less time.

b. First indication information, where the first indication information is used to indicate whether new SDT data arrives during the SDT process.

The first indication information indicates whether new SDT data arrives during the SDT process. When new SDT data arrives during the SDT process, the amount of data to be transmitted increases correspondingly, and the time-consuming of the SDT process changes accordingly.

c. The duration of the SDT failure detection timer.

The SDT failure detection timer is configured by the network device for each cell. Each cell may include multiple terminal devices. For different terminal devices, the arrival of data to be transmitted is different.

Therefore, the network device can judge according to the first parameter whether the configuration of the amount of data triggering the SDT process is reasonable, whether the configuration of the duration of the SDT failure detection timer is reasonable, and so on. For example, when the time length between the time when the SDT process is completed and the timeout time of the SDT failure detection timer is less than or equal to the first time length, the network device receives the first parameter, and the first parameter includes the waiting time when the terminal device triggers the SDT process. The amount of data transferred. According to the amount of data to be transmitted when the terminal device triggers the SDT process, it is known that the configured data amount to be transmitted is too large, and at this time the network device may reconfigure the data amount of the SDT. For example, the first parameter includes the duration of the SDT failure detection timer. If the network device judges that the duration of the SDT failure detection timer is too short, the network device may reconfigure the duration of the SDT failure detection timer, and so on.

The second parameter is a wireless link parameter in the SDT process, and is used to assist the network device in judging whether the terminal device has a wireless link problem during the execution of the SDT process.

The second parameter may include at least one of the following:

d. The measurement result of the downlink reference signal.

The downlink reference signal measurement result may include a synchronization signal block (Synchronization Signal Block, SSB) and/or a positioning reference signal (Positioning Reference Signal, PRS).

e. Second instruction information.

The second indication information is used to indicate whether the terminal device executes the SDT process multiple times. In the embodiment of the present application, executing the SDT process multiple times means executing the SDT process twice or more.

Executing the SDT process multiple times indicates that the terminal device is executing the SDT process. Due to some reasons, the SDT process is not successful, so the SDT process needs to be executed again. At this time, the terminal device records the corresponding parameters to assist the network device in judging the potential of the SDT process. The problem.

In an embodiment, the second indication information includes resource configuration information of the SDT process based on pre-configured resources, or, the second indication information includes resource configuration information of the SDT process based on random access. The resource configuration information may include time domain resources, frequency domain resources, etc. corresponding to the execution of the SDT process.

When the terminal device executes the SDT process based on pre-configured resources for multiple times, the second indication information may include the resource configuration information of the SDT process based on pre-configured resources, and the resource configuration information of the SDT process based on pre-configured resources It may include time domain resources, frequency domain resources, etc. used by the terminal device to perform the SDT process based on pre-configured resources; It includes resource configuration information of the SDT process based on random access, and the resource configuration information of the SDT process based on random access may include time domain resources, frequency domain resources, etc. used by the terminal device to perform the SDT process based on random access.

After receiving the second indication information, the network device may determine that the terminal device has executed the SDT process multiple times.

f. The third instruction information.

The third indication information is used to indicate whether the terminal device triggers a random access process during the SDT process based on pre-configured resources.

When the terminal device is configured with CG-SDT resources and RA-SDT resources at the same time, the terminal device first determines whether the CG-SDT resource is valid, and if valid, the terminal device initiates an SDT process based on pre-configured resources. Therefore, when the pre-configured resources are valid, if the terminal device triggers the random access process, it means that the initially valid CG-SDT resources are invalid. For example, when there is no suitable SSB, the terminal device triggers a random access process in the SDT process based on pre-configured resources.

g. The fourth instruction information.

The fourth indication information is used to indicate whether a random access problem has occurred in the terminal device. The random access problem may be, for example, that the number of times the terminal device attempts to initiate random access reaches a preconfigured maximum number of times. The pre-configured maximum number of times can be configured by the network device. When the terminal device initiates the random access process, if the random access fails, the terminal device will try to initiate the random access again. For example, if the pre-configured maximum number of times is 8, and the terminal device fails to try the random access process for many times during the SDT process, when the number of random access attempts of the terminal device reaches 8 times, it is determined that a random access process has occurred on the terminal device. into the problem. The terminal device may record fourth indication information, which is used to indicate to the network device whether a random access problem occurs on the terminal device.

The second parameter includes at least one of the downlink reference signal measurement result, the second indication information, the third indication information, and the fourth indication information. The network device can judge according to the second parameter whether the terminal device has a wireless link during the execution of the SDT. road quality problems (including uplink and/or downlink). If the network device determines that the terminal device has a wireless link quality problem during the execution of SDT according to the second parameter, the network device can optimize the RA-SDT resource configuration, CG-SDT resource configuration, RSRP threshold configuration, etc., to reduce the possible wireless link quality. Link quality problem.

The third parameter is a resource configuration parameter of the SDT process, which is used to assist the network device to determine whether the SDT resource configured for the terminal device is effectively used. The third parameter includes:

h. The third parameter includes fifth indication information.

The fifth indication information is used to indicate whether the terminal device triggers a random access-based SDT process when pre-configured resources are configured. When the terminal device is configured with pre-configured resources, if the pre-configured resources are valid, the terminal device will initiate an SDT process based on the pre-configured resources.

If the fifth indication information indicates that the terminal device has not triggered the SDT process based on random access when the pre-configured resources are configured, it means that the pre-configured resources configured for the terminal device have been effectively used; if the fifth indication information indicates that the terminal device is in If the random access-based SDT process is triggered when pre-configured resources are configured, it means that the pre-configured resources configured by the terminal device have not been effectively used.

Therefore, the network device can judge whether the pre-configured resources are effectively used according to the above-mentioned fifth indication information, and if not, the network device can optimize the configuration of the pre-configured resources, for example, it can be set to use the pre-configured resources for the transmission of other data For example, combining other reported SDT process parameters to determine the reason why the pre-configured resources are invalid, so that the subsequent terminal device can execute the SDT process based on the pre-configured resources when performing the SDT process, etc., so as to reduce the waste of resources.

S44. The terminal device sends a terminal information response message to the network device.

After the terminal device records the SDT process parameters, the terminal device can report the SDT process parameters to the network device. In a possible implementation manner, the terminal device may report the SDT process parameters to the network device through a terminal information response message. Specifically, the terminal device sends a terminal information response message to the network device, and the terminal information response message includes SDT process parameters.

After receiving the SDT process parameters reported by the terminal device, the network device can optimize the SDT resource or parameter configuration according to the SDT process parameters. Specific resource or parameter configuration optimization can refer to the above-mentioned embodiments, and will not be repeated here.

FIG. 5 is a schematic structural diagram of a communication device provided in an embodiment of the present application. As shown in FIG. 5, the communication device 50 includes:

A recording module 51, configured to record the SDT process parameters when including an SDT exception in the successfully completed SDT process;

A reporting module 52, configured to report the SDT process parameters to network equipment.

A random access problem occurs on the terminal device;

The duration of the SDT failure detection timer.

Downlink reference signal measurement results;

RRC recovery message;

RRC release message;

RRC state pending configuration message.

In a possible implementation manner, the reporting module 52 is specifically configured to:

The communication device provided in the embodiment of the present application can execute the technical solutions shown in the above method embodiments, and its implementation principles and beneficial effects are similar, and will not be repeated here.

FIG. 6 is a schematic structural diagram of a communication device provided by an embodiment of the present application. As shown in FIG. 6, the communication device 60 includes:

The receiving module 61 is configured to receive an SDT process parameter reported by the terminal device, where the SDT process parameter indicates that the SDT process successfully completed by the terminal device includes an SDT exception.

The duration of the SDT failure detection timer.

Downlink reference signal measurement results;

In a possible implementation manner, the receiving module 61 is specifically configured to:

FIG. 7 is a schematic structural diagram of a terminal device provided by an embodiment of the present application. Referring to FIG. 7 , a terminal device 70 may include: a transceiver 71 , a memory 72 , and a processor 73 . The transceiver 71 may include: a transmitter and/or a receiver. The transmitter may also be called a transmitter, a transmitter, a sending port, or a sending interface, and similar descriptions, and the receiver may also be called a receiver, a receiver, a receiving port, or a receiving interface, or similar descriptions. Exemplarily, the transceiver 71 , the memory 72 , and the processor 73 are connected to each other through a bus 74 .

The memory 72 is used to store program instructions;

The processor 73 is configured to execute the program instructions stored in the memory, so as to enable the terminal device 70 to execute any communication method shown above.

Wherein, the receiver of the transceiver 71 can be used to perform the receiving function of the terminal device in the above communication method.

FIG. 8 is a schematic structural diagram of a network device provided by an embodiment of the present application. Referring to FIG. 8 , a network device 80 may include: a transceiver 81 , a memory 82 , and a processor 83 . The transceiver 81 may include: a transmitter and/or a receiver. The transmitter may also be called a transmitter, a transmitter, a sending port, or a sending interface, and similar descriptions, and the receiver may also be called a receiver, a receiver, a receiving port, or a receiving interface, or similar descriptions. Exemplarily, the transceiver 81 , the memory 82 , and the processor 83 are connected to each other through a bus 84 .

Memory 82 is used to store program instructions;

The processor 83 is configured to execute the program instructions stored in the memory, so as to enable the network device 80 to execute any communication method shown above.

Wherein, the receiver of the transceiver 81 can be used to perform the receiving function of the network device in the above communication method.

An embodiment of the present application provides a computer-readable storage medium, where computer-executable instructions are stored in the computer-readable storage medium, and when the computer-executable instructions are executed by a processor, the foregoing communication method is implemented.

The embodiment of the present application may further provide a computer program product, the computer program product may be executed by a processor, and when the computer program product is executed, any communication method performed by the terminal device or network device shown above may be implemented.

The communication device, computer-readable storage medium, and computer program product of the embodiments of the present application can execute the communication method performed by the above-mentioned terminal device and network device. For the specific implementation process and beneficial effects, refer to the above, and will not be repeated here.

In the several embodiments provided in this application, it should be understood that the disclosed system, device and method can 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. The above-mentioned integrated units can be implemented in the form of hardware or in the form of software functional units.

Those of ordinary skill in the art can understand that all or part of the steps for implementing the above method embodiments can be completed by program instructions and related hardware. The aforementioned computer program can be stored in a computer-readable storage medium. When the computer program is executed by the processor, it implements the steps of the above-mentioned method embodiments; and the aforementioned storage medium includes: ROM, RAM, magnetic disk or optical disk and other various media that can store program codes.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, rather than limiting them; although the application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: It is still possible to modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the technical solutions of the various embodiments of the present application. scope.

Claims

A communication method, characterized in that it is applied to a terminal device, comprising:

Record SDT process parameters when SDT exceptions are included in the successfully completed small data transfer SDT process;

Report the SDT process parameters to the network device.
The method according to claim 1, wherein the SDT abnormality includes at least one of the following:

The duration between the moment when the SDT process is completed and the overtime of the SDT failure detection timer is less than or equal to the first duration;

A random access problem occurs on the terminal device;

The terminal device triggers a random access process during the SDT process based on pre-configured resources;

The terminal device triggers a random access-based SDT process when pre-configured resources are configured.
The method according to claim 2, wherein the first duration is a duration configured by the network device.
The method according to any one of claims 1-3, wherein the SDT process parameters include at least one of the following:

A first parameter, where the first parameter is a configuration parameter that triggers the SDT process;

A second parameter, where the second parameter is a radio link parameter of the SDT process;

A third parameter, where the third parameter is a resource configuration parameter of the SDT process.
The method according to claim 4, wherein the first parameter comprises at least one of the following:

The amount of data to be transmitted when the terminal device triggers the SDT process;

First indication information, where the first indication information is used to indicate whether new SDT data arrives during the SDT process;

The duration of the SDT failure detection timer.
The method according to claim 4 or 5, wherein the second parameter comprises at least one of the following:

Downlink reference signal measurement results;

second indication information, where the second indication information is used to indicate whether the terminal device executes the SDT process multiple times;

third indication information, where the third indication information is used to indicate whether the terminal device triggers a random access process during the SDT process based on pre-configured resources;

Fourth indication information, where the fourth indication information is used to indicate whether a random access problem occurs on the terminal device.
The method according to claim 6, wherein the downlink reference signal is a synchronization signal block (SSB) and/or a positioning reference signal (PRS).
The method according to claim 6 or 7, wherein the second indication information includes resource configuration information of an SDT process based on pre-configured resources; or, the second indication information includes random access-based Resource configuration information of the SDT process.
The method according to any one of claims 4-8, wherein the third parameter includes fifth indication information, wherein:

The fifth indication information is used to indicate whether the terminal device triggers an SDT process based on random access when pre-configured resources are configured.
The method according to any one of claims 1-9, wherein the method further comprises:

The terminal device receives a first radio resource control RRC message from the network device during the operation of the SDT failure detection timer.
The method according to claim 10, wherein the first RRC message includes any of the following:

RRC recovery message;

RRC release message;

RRC state pending configuration message.
The method according to claim 10 or 11, wherein the start time of the SDT failure detection timer is the time when the terminal device initiates the SDT process;

The end time of the SDT failure detection timer is the time when the terminal device receives the first RRC message.
The method according to any one of claims 1-12, wherein the reporting the SDT process parameters to the network device includes:

Sending a terminal information response message to the network device, where the terminal information response message includes the SDT process parameters, and the terminal information response message is a response message to the terminal information request message.
A communication method, characterized in that it is applied to a network device, comprising:

An SDT process parameter reported by the terminal device is received, where the SDT process parameter indicates that the SDT process successfully completed by the terminal device includes an SDT exception.
The method according to claim 14, wherein the SDT process parameters include at least one of the following:

A first parameter, where the first parameter is a configuration parameter that triggers the SDT process;

A second parameter, where the second parameter is a radio link parameter of the SDT process;

A third parameter, where the third parameter is a resource configuration parameter of the SDT process.
The method according to claim 15, wherein the first parameter comprises at least one of the following:

The amount of data to be transmitted when the terminal device triggers the SDT process;

First indication information, where the first indication information is used to indicate whether new SDT data arrives during the SDT process;

The duration of the SDT failure detection timer.
The method according to claim 15 or 16, wherein the second parameter comprises at least one of the following:

Downlink reference signal measurement results;

second indication information, where the second indication information is used to indicate whether the terminal device executes the SDT process multiple times;

third indication information, where the third indication information is used to indicate whether the terminal device triggers a random access process during the SDT process based on pre-configured resources;

Fourth indication information, where the fourth indication information is used to indicate whether a random access problem occurs on the terminal device.
The method according to claim 17, wherein the downlink reference signal is SSB and/or PRS.
The method according to claim 17 or 18, wherein the second indication information includes resource configuration information of an SDT process based on pre-configured resources; or, the second indication information includes random access-based Resource configuration information of the SDT process.
The method according to any one of claims 15-19, wherein the third parameter includes fifth indication information, wherein:

The fifth indication information is used to indicate whether the terminal device triggers an SDT process based on random access when pre-configured resources are configured.
The method according to any one of claims 14-20, wherein the receiving the SDT process parameters reported by the terminal equipment includes:

Receive a terminal information response message from the terminal device, the terminal information response message includes the SDT process parameters, and the terminal information response message is a response message to the terminal information request message.
A communication device, characterized by comprising:

A recording module, configured to record SDT process parameters when an SDT exception is included in a successfully completed SDT process;

A reporting module, configured to report the SDT process parameters to the network device.
The device according to claim 22, wherein the SDT abnormality includes at least one of the following:

The duration between the moment when the SDT process is completed and the overtime of the SDT failure detection timer is less than or equal to the first duration;

Random access problems occur in terminal equipment;

The terminal device triggers a random access process during the SDT process based on pre-configured resources;

The terminal device triggers a random access-based SDT process when pre-configured resources are configured.
The apparatus according to claim 23, wherein the first duration is a duration configured by the network device.
The device according to any one of claims 22-24, wherein the SDT process parameters include at least one of the following:

A first parameter, where the first parameter is a configuration parameter that triggers the SDT process;

A second parameter, where the second parameter is a radio link parameter of the SDT process;

A third parameter, where the third parameter is a resource configuration parameter of the SDT process.
The device according to claim 25, wherein the first parameter comprises at least one of the following:

The amount of data to be transmitted when the terminal device triggers the SDT process;

First indication information, where the first indication information is used to indicate whether new SDT data arrives during the SDT process;

The duration of the SDT failure detection timer.
The device according to claim 25 or 26, wherein the second parameter comprises at least one of the following:

Downlink reference signal measurement results;

second indication information, where the second indication information is used to indicate whether the terminal device executes the SDT process multiple times;

third indication information, where the third indication information is used to indicate whether the terminal device triggers a random access process during the SDT process based on pre-configured resources;

Fourth indication information, where the fourth indication information is used to indicate whether a random access problem occurs on the terminal device.
The device according to claim 27, wherein the downlink reference signal is SSB and/or PRS.
The device according to claim 27 or 28, wherein the second indication information includes resource configuration information of an SDT process based on pre-configured resources; or, the second indication information includes random access-based Resource configuration information of the SDT process.
The device according to any one of claims 25-29, wherein the third parameter includes fifth indication information, wherein:

The fifth indication information is used to indicate whether the terminal device triggers an SDT process based on random access when pre-configured resources are configured.
The device according to any one of claims 22-30, further comprising a receiving module, the receiving module is used for:

A first RRC message is received from the network device while an SDT failure detection timer is running.
The device according to claim 31, wherein the first RRC message includes any of the following:

RRC recovery message;

RRC release message;

RRC state pending configuration message.
The device according to claim 31 or 32, wherein the start time of the SDT failure detection timer is the time when the terminal device initiates the SDT process;

The end time of the SDT failure detection timer is the time when the terminal device receives the first RRC message.
The device according to any one of claims 22-33, wherein the reporting module is specifically used for:

Sending a terminal information response message to the network device, where the terminal information response message includes the SDT process parameters, and the terminal information response message is a response message to the terminal information request message.
A communication device, characterized by comprising:

The receiving module is configured to receive an SDT process parameter reported by the terminal device, where the SDT process parameter indicates that the SDT process successfully completed by the terminal device includes an SDT exception.
The device according to claim 35, wherein the SDT process parameters include at least one of the following:

A first parameter, where the first parameter is a configuration parameter that triggers the SDT process;

A second parameter, where the second parameter is a radio link parameter of the SDT process;

A third parameter, where the third parameter is a resource configuration parameter of the SDT process.
The device according to claim 36, wherein the first parameter comprises at least one of the following:

The amount of data to be transmitted when the terminal device triggers the SDT process;

First indication information, where the first indication information is used to indicate whether new SDT data arrives during the SDT process;

The duration of the SDT failure detection timer.
The device according to claim 36 or 37, wherein the second parameter comprises at least one of the following:

Downlink reference signal measurement results;

second indication information, where the second indication information is used to indicate whether the terminal device executes the SDT process multiple times;

third indication information, where the third indication information is used to indicate whether the terminal device triggers a random access process during the SDT process based on pre-configured resources;

Fourth indication information, where the fourth indication information is used to indicate whether a random access problem occurs on the terminal device.
The device according to claim 38, wherein the downlink reference signal is SSB and/or PRS.
The device according to claim 38 or 39, wherein the second indication information includes resource configuration information of an SDT process based on pre-configured resources; or, the second indication information includes random access-based Resource configuration information of the SDT process.
The device according to any one of claims 36-40, wherein the third parameter includes fifth indication information, wherein:

The fifth indication information is used to indicate whether the terminal device triggers an SDT process based on random access when pre-configured resources are configured.
The device according to any one of claims 35-41, wherein the receiving module is specifically used for:

Receive a terminal information response message from the terminal device, the terminal information response message includes the SDT process parameters, and the terminal information response message is a response message to the terminal information request message.
A terminal device, characterized in that it includes: a transceiver, a processor, and a memory;

the memory stores computer-executable instructions;

The processor executes the computer-executable instructions stored in the memory, so that the processor executes the communication method according to any one of claims 1-21.
A network device, characterized by comprising: a transceiver, a processor, and a memory;

the memory stores computer-executable instructions;

The processor executes the computer-executable instructions stored in the memory, so that the processor executes the communication method according to any one of claims 22-42.
A computer-readable storage medium, characterized in that computer-executable instructions are stored in the computer-readable storage medium, and when the computer-readable instructions are executed by a processor, they are used to implement claims 1-21 or 22-42 The communication method described in any one.
A computer program product, including a computer program, characterized in that, when the computer program is executed by a processor, the communication method according to any one of claims 1-21 or 22-42 is implemented.