CN117136623A

CN117136623A - Data transmission processing method, device, terminal and storage medium

Info

Publication number: CN117136623A
Application number: CN202180096976.1A
Authority: CN
Inventors: 林雪; 尤心
Original assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Current assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Priority date: 2021-06-17
Filing date: 2021-06-17
Publication date: 2023-11-28
Also published as: WO2022261893A1

Abstract

The application discloses a data transmission processing method, a data transmission processing device, a terminal and a storage medium, and belongs to the technical field of wireless communication. The method comprises the following steps: selecting a synchronization signal block SSB of the small data transmission RA-SDT for random access according to a first reference signal received power RSRP threshold; determining a data transmission mode according to a selection result of the SSB for the RA-SDT and executing the data transmission mode, wherein the data transmission mode comprises the execution of the RA-SDT or the execution of the rollback, and the execution of the rollback comprises the following steps: back to the random access RA procedure or back to the radio resource control RRC connection recovery procedure. The application provides a scheme for executing RA-SDT or rollback according to an RSRP threshold.

Description

Data transmission processing method, device, terminal and storage medium

Technical Field

The present application relates to the field of wireless communications technologies, and in particular, to a data transmission processing method, a device, a terminal, and a storage medium.

Background

Small data transfer (Small Data Transmission, SDT) is a technique for enabling a terminal to perform data transfer in an rrc_idle state (i.e., IDLE state) or an rrc_inactive state (i.e., INACTIVE state) based on energy saving considerations.

In the small data transmission technology, when effective Configuration Grant (CG) resources exist on a carrier selected by the UE, the UE preferentially selects CG-SDT; otherwise, if the random access RA-SDT resource exists on the carrier selected by the UE, the UE selects the RA-SDT.

Disclosure of Invention

The embodiment of the application provides a data transmission processing method, a data transmission processing device, a terminal and a storage medium. The technical scheme is as follows:

in one aspect, an embodiment of the present application provides a data transmission processing method, where the method is performed by a terminal, and the method includes:

selecting a synchronization signal block SSB of the small data transmission RA-SDT for random access according to a first reference signal received power RSRP threshold;

determining a data transmission mode according to a selection result of the SSB for the RA-SDT and executing the data transmission mode, wherein the data transmission mode comprises the execution of the RA-SDT or the execution of the rollback, and the execution of the rollback comprises the following steps: back to the random access RA procedure or back to the radio resource control RRC connection recovery procedure.

In one possible implementation, determining and executing the data transmission mode according to the selection result of the SSB for RA-SDT includes:

when at least one reference signal SS-RSRP corresponding to the SSB is higher than or equal to the first RSRP threshold, selecting one SSB from the SSBs with the corresponding SS-RSRP higher than or equal to the first RSRP threshold to execute RA-SDT.

and when no corresponding SSB with the SS-RSRP higher than or equal to the first RSRP threshold exists, selecting any SSB to execute RA-SDT.

and when no corresponding SSB with the SS-RSRP higher than or equal to the first RSRP threshold exists, executing an RA procedure according to the RA configuration on the current bandwidth part BWP.

In one possible implementation, when there is no SSB with a corresponding SS-RSRP higher than or equal to the first RSRP threshold, performing an RA procedure according to an RA configuration on the current bandwidth portion BWP, including:

and when no corresponding SSB with the SS-RSRP higher than or equal to the first RSRP threshold exists, executing an RA procedure corresponding to the RA-SDT type selected by the terminal according to the RA configuration on the current BWP.

In one possible implementation manner, when there is no SSB with the corresponding SS-RSRP higher than or equal to the first RSRP threshold, the RA procedure corresponding to the RA-SDT type selected by the terminal is executed according to the RA configuration on the current BWP, including:

When no corresponding SSB with the SS-RSRP higher than or equal to the first RSRP threshold exists, executing an RA process corresponding to the RA-SDT type selected by the terminal according to the RA configuration on the current BWP, the first RSRP threshold and the second RSRP threshold;

wherein the second RSRP threshold is a threshold for selecting SSBs for RA.

In one possible implementation, the first RSRP threshold is equal to the second RSRP threshold;

or the first RSRP threshold and the second RSRP threshold are the same threshold parameter;

alternatively, the first RSRP threshold is not equal to the second RSRP threshold.

In one possible implementation manner, when there is no SSB with the corresponding SS-RSRP higher than or equal to the first RSRP threshold, according to the RA configuration on the current BWP, the first RSRP threshold, and the second RSRP threshold, an RA procedure corresponding to the RA-SDT type selected by the terminal is performed, including:

when no corresponding SSB with the SS-RSRP higher than or equal to the first RSRP threshold exists, the RA-SDT type selected by the terminal is 2 steps of RA-SDT, resources for 2 steps of RA exist on the current BWP, and the first RSRP threshold is equal to the second RSRP threshold or the first RSRP threshold and the second RSRP are the same threshold parameter, one SSB is randomly selected to execute a 2 steps of RA process;

Or,

and when no SSB with the corresponding SS-RSRP higher than or equal to the first RSRP threshold exists, the RA-SDT type selected by the terminal is 2 steps RA-SDT, resources for 2 steps RA exist on the current BWP, and the first RSRP threshold is not equal to the second RSRP threshold, executing a 2 steps RA process according to the SSB determined by the second RSRP threshold.

when no SSB with the corresponding SS-RSRP higher than or equal to the first RSRP threshold exists, the RA-SDT type selected by the terminal is 4 steps RA-SDT, and the first RSRP threshold is equal to the second RSRP threshold or the first RSRP threshold and the second RSRP are the same threshold parameter, randomly selecting one SSB to execute a 4 steps RA process;

or,

and when no SSB with the corresponding SS-RSRP higher than or equal to the first RSRP threshold exists, the RA-SDT type selected by the terminal is 4 steps RA-SDT, and the first RSRP threshold is not equal to the second RSRP threshold, executing a 4 steps RA process according to the SSB determined by the second RSRP threshold.

and when no SSB with the corresponding SS-RSRP higher than or equal to the first RSRP threshold exists, the RA-SDT type selected by the terminal is 2 steps RA-SDT, and the current BWP does not have resources for 2 steps RA, executing a 4 steps RA process according to the SSB determined by the second RSRP threshold.

and when no corresponding SSB with the SS-RSRP higher than or equal to the first RSRP threshold exists, the terminal backs to a 4-step RA procedure.

when no corresponding SSB with the SS-RSRP higher than or equal to the first RSRP threshold exists, the terminal backs to an RA process and reselects an RA type according to a third RSRP threshold;

wherein the third RSRP threshold is used for the terminal to select between two RA types.

In one possible implementation manner, when the data transmission manner includes performing rollback, the determining and performing the data transmission manner according to the selection result of the SSB for RA-SDT includes:

determining that the SDT process is not successfully completed or the SDT process is cancelled, backing to the RA process, and informing an upper layer that the SDT is cancelled or not successfully completed;

or,

determining that the SDT process is not successfully completed or canceled, and sending an indication that the SDT is canceled or not completed to an upper layer; and when the upper layer receives the indication, canceling the SDT through the upper layer and reinitiating the RRC connection recovery process.

In a possible implementation manner, before the selecting the synchronization signal block SSB of the small data transmission RA-SDT for random access according to the first reference signal received power RSRP threshold, the method further includes:

when the terminal is in an RRC inactive state and meets a first condition, selecting to process in a RA-SDT mode;

the first condition includes at least one of the following conditions:

the data to be transmitted are all from radio bearers RB that allow triggering of SDT;

the data quantity to be transmitted is smaller than or equal to the data quantity threshold of the network configuration;

the downlink RSRP measurement result is greater than or equal to the RSRP threshold for executing SDT;

The selected carrier has RA-SDT resources and no active CG-SDT resources.

In one aspect, there is provided a data transmission processing method, the method being performed by a terminal, the method comprising:

when the terminal is in an RRC inactive state and a second condition is met, selecting to execute RA-SDT;

the second condition includes: there is an SSB where the corresponding SS-RSRP is greater than or equal to the first RSRP threshold.

In one possible implementation, when the terminal satisfies a 2-step RA-SDT condition, the first RSRP threshold is carried by configuration information of the 2-step RA-SDT;

and when the terminal meets the condition of 4 steps of RA-SDT, the first RSRP threshold is carried by the configuration information of 4 steps of RA-SDT.

In one possible implementation, the second condition further includes at least one of the following conditions:

the selected carrier has RA-SDT resources and no active CG-SDT resources.

In one possible implementation, the method further includes:

and when the terminal is in an RRC inactive state and the second condition is not satisfied, selecting to execute RA.

On the other hand, the embodiment of the application provides a data transmission processing device, which is used in a terminal and comprises:

a selection module, configured to select a synchronization signal block SSB of a small data transmission RA-SDT for random access according to a first reference signal received power RSRP threshold;

a processing module, configured to determine a data transmission manner according to a selection result of the SSB for RA-SDT and execute the data transmission manner, where the data transmission manner includes executing RA-SDT or executing rollback, and the executing rollback includes: back to the random access RA procedure or back to the radio resource control RRC connection recovery procedure.

In one possible implementation, the processing module is configured to, in response to a request from a user,

wherein the second RSRP threshold is a threshold for selecting SSBs for RA.

or,

and when no SSB with the corresponding SS-RSRP higher than or equal to the first RSRP threshold exists, the RA-SDT type selected by the terminal is 2 steps RA-SDT, and the 2 steps RA resource does not exist in the current BWP, executing a 4 steps RA process according to the SSB determined by the second RSRP threshold.

In one possible implementation, when the data transmission mode includes performing rollback, the processing module is configured to,

Or,

determining that the SDT process is not successfully completed or canceled, and sending an indication that the SDT is canceled or not completed to an upper layer; when the upper layer receives the indication, the SDT is canceled by the upper layer, and the RRC connection recovery process is restarted.

In a possible implementation manner, the selecting module is further configured to select to process in a RA-SDT manner when the terminal is in an RRC inactive state and the first condition is met before selecting the SSB for RA-SDT according to the first RSRP threshold;

the first condition includes at least one of the following conditions:

the selected carrier has RA-SDT resources and no active CG-SDT resources.

a selection module, configured to execute RA-SDT when the terminal is in an RRC inactive state and a second condition is satisfied;

the selected carrier has RA-SDT resources and no active CG-SDT resources.

In a possible implementation manner, the selecting module is further configured to perform RA when the terminal is in an RRC inactive state and the second condition is not satisfied.

In yet another aspect, an embodiment of the present application provides a computer device, where the computer device includes a processor, a memory, and a transceiver, where the memory stores a computer program, and the computer program is configured to be executed by the processor to implement the data transmission processing method described above.

In yet another aspect, an embodiment of the present application further provides a computer readable storage medium having a computer program stored therein, the computer program being loaded and executed by a processor to implement the above-mentioned data transmission processing method.

In another aspect, a computer program product is provided that includes computer instructions stored in a computer-readable storage medium. The processor of the computer device reads the computer instructions from the computer-readable storage medium, and the processor executes the computer instructions so that the computer device performs the above-described data transmission processing method.

In another aspect, a chip is provided for running in a computer device to cause the computer device to perform the above-described data transmission processing method.

In another aspect, a computer program is provided, which is executed by a processor of a computer device to implement the above-described data transmission processing method.

The technical scheme provided by the embodiment of the application can bring the following beneficial effects:

for the uplink small data process, the terminal can select the SSB for RA-SDT according to an RSRP threshold, and determine whether to execute RA-SDT or execute rollback according to the selection result, so that a scheme for executing RA-SDT or rollback according to the RSRP threshold is provided.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for the description of the embodiments will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments of the present application, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic diagram of a network architecture of a communication system provided by one embodiment of the present application;

fig. 2 is a flowchart of a data transmission processing method according to an embodiment of the present application;

fig. 3 is a flowchart of a data transmission processing method according to an embodiment of the present application;

FIG. 4 is a schematic flow chart of one implementation of RA-SDT in accordance with the embodiment of FIG. 3;

FIG. 5 is a flow diagram of a rollback implementation in accordance with the embodiment of FIG. 3;

FIG. 6 is a flow diagram of a rollback implementation in accordance with the embodiment of FIG. 3;

fig. 7 is a flowchart of a data transmission processing method according to an embodiment of the present application;

fig. 8 is a flowchart of a data transmission processing method according to an embodiment of the present application;

fig. 9 is a block diagram of a data transmission processing apparatus according to an embodiment of the present application;

Fig. 10 is a block diagram of a data transmission processing apparatus according to an embodiment of the present application;

fig. 11 is a schematic structural diagram of a computer device according to an embodiment of the present application.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the present application more apparent, the embodiments of the present application will be described in further detail with reference to the accompanying drawings.

The network architecture and the service scenario described in the embodiments of the present application are for more clearly describing the technical solution of the embodiments of the present application, and do not constitute a limitation on the technical solution provided by the embodiments of the present application, and those skilled in the art can know that, with the evolution of the network architecture and the appearance of the new service scenario, the technical solution provided by the embodiments of the present application is applicable to similar technical problems.

Referring to fig. 1, a schematic diagram of a network architecture of a communication system according to an embodiment of the application is shown. The network architecture may include: a terminal 10 and a base station 20.

The number of terminals 10 is typically plural and one or more terminals 10 may be distributed within the cell managed by each base station 20. The terminal 10 may include various handheld devices, vehicle mount devices, wearable devices, computing devices, or other processing devices connected to a wireless modem, as well as various forms of User Equipment (UE), mobile Station (MS), terminal devices (terminal devices), etc. having wireless communication capabilities. For convenience of description, in the embodiment of the present application, the above-mentioned devices are collectively referred to as a terminal.

Base station 20 is a device deployed in an access network to provide wireless communication functionality for terminal 10. The base stations 20 may include various forms of satellite base stations, macro base stations, micro base stations, relay stations, access points, and the like. The names of base station capable devices may vary in systems employing different Radio access technologies, for example in 5G New Radio (NR) systems, called gndeb or gNB. As communication technology evolves, the name "base station" may change. For convenience of description, the above-described devices for providing the wireless communication function to the terminal 10 are collectively referred to as a base station in the embodiments of the present application.

Optionally, not shown in fig. 1, the network architecture further includes other network devices, such as: a central control node (Central Network Control, CNC), an access and mobility management function (Access and Mobility Management Function, AMF) device, a session management function (Session Management Function, SMF) or a user plane function (User Plane Function, UPF) device, etc.

The "5G NR system" in the embodiments of the present disclosure may also be referred to as a 5G system or an NR system, but a person skilled in the art may understand the meaning thereof. The technical solution described in the embodiments of the present disclosure may be applied to a 5G NR system, may also be applied to a subsequent evolution system of the 5G NR system, or may also be applied to a system before the 5G NR system, such as a long term evolution (Long Term Evolution, LTE) system.

Before describing the schemes shown in the following embodiments of the present application, the concepts of the present application will be described first.

1) 5G NR system

The 5G NR system is a new generation of wireless communication system proposed based on the demands of users for speed, delay, high-speed mobility, energy efficiency of wireless communication, and the diversity and complexity of wireless communication services in future life. The main application scene of the 5G system is as follows: enhanced mobile Ultra-wideband (Enhanced Mobile Broadband, emmbb), low latency high reliability communications (Ultra-reliable and Low Latency Communications, URLLC), large scale machine type communications (Massive Machine Type Communication, mctc).

In a 5G network environment, in order to reduce air interface signaling and to quickly restore radio connection and quickly restore data traffic, a new radio resource control (Radio Resource Control, RRC) state, namely, an RRC INACTIVE state (rrc_inactive) state, is defined, which is different from an RRC IDLE state (rrc_idle) and an RRC connected state (rrc_active). The three RRC states are as follows:

rrc_idle: mobility is cell selection reselection based on UE, paging is initiated by Core Network (CN), paging area is configured by CN, no UE context exists at base station side, no RRC connection exists between UE and base station.

Rrc_connected: an RRC connection exists between the UE and the base station, and a UE context exists between the base station and the UE. The network side knows that the location of the UE is cell specific. Mobility is network-side controlled mobility. Unicast data may be transmitted between the UE and the base station.

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

2) Long term evolution uplink small data transmission (Long Term Evolution Up Early Data Transmission, LTE UP EDT)

In LTE EDT, i.e. small data transmission, has been introduced. In this process, the UE may remain in the idle state, the suspend state, or the inactive state all the time, so as to complete the transmission of the uplink and/or downlink small data packets. In configuration, the network configures a maximum Transport Block (TB) size that the current network allows to transmit on SIB2, and if the UE determines that the data size to be transmitted is smaller than the maximum TB size, the UE may initiate EDT transmission; otherwise, the UE enters a connection state to transmit data using a normal connection establishment procedure.

If the cell in which the UE initiates UP-EDT is the same as the last serving cell, the base station may directly submit uplink data to the core network after receiving the connection recovery request and uplink data sent by the UE.

3) Preconfigured uplink resources (Preconfigured Uplink Resource, PUR)

In LTE Release16, for narrowband internet of things (Narrow Band Internet of Things, NB-IoT) and enhanced machine type communication (Enhance Machine Type Communication, eMTC) scenarios, a method for data transmission using preconfigured uplink resources PUR in IDLE state is introduced. 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, except that the process of sending a preamble acquisition Timing Advance (TA) and UpLink scheduling grant (UL grant) is omitted.

4)R17 SDT

In the 5G NR system, RRC states are divided into 3 types, respectively: rrc_idle (RRC IDLE state), rrc_inactive (RRC INACTIVE state), rrc_connected (RRC CONNECTED state). Where the rrc_inactive state is a new state introduced by the 5G system from the energy saving point of view, for the 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, and 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 MO or MT data arrives, the UE needs to resume connection, and releases to INACTIVE state after 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. Therefore, rel-17 stands for research on small data transfer SDT under RRC_INACTIVE, project objectives mainly have two directions: uplink small data transmission based on random access procedure (two/four steps) and uplink small data transmission based on pre-configured resources (such as CG type 1).

When the network configures different types of SDT resources for the UE, an explicit criterion is required for the UE to select SDT resources. In the related art, when effective CG resources exist on a carrier selected by the UE, the UE preferentially selects CG-SDT; otherwise, if Random Access SDT (RA-SDT) resources exist on the carrier selected by the UE, the UE selects RA-SDT and further selects between 2-step RA-SDT and 4-step RA-SDT according to a reference signal received power (Reference Signal Receiving Power, RSRP) threshold.

However, the related art does not explicitly select a synchronization signal block (Synchronization Signal Block, SSB) used by RA-SDT and how to perform a back-off scheme when there is no suitable SSB.

Referring to fig. 2, a data transmission processing method according to an embodiment of the application is shown. The method may be performed by a terminal, where the terminal may be a terminal in the network architecture shown in fig. 1. The method may comprise the steps of:

step 201, a synchronization signal block SSB for a small data transmission RA-SDT for random access is selected according to a first reference signal received power RSRP threshold.

Step 202, determining a data transmission mode according to the selection result of the SSB for RA-SDT and executing, where the data transmission mode includes executing RA-SDT or executing rollback, and the executing rollback includes: back to the random access RA procedure or back to the radio resource control RRC connection recovery procedure.

In summary, in the scheme shown in the embodiment of the present application, for the uplink small data procedure, the terminal may select the SSB for RA-SDT according to an RSRP threshold, and determine whether to execute RA-SDT or execute rollback according to the selection result, so as to provide a scheme for executing RA-SDT or rollback according to the RSRP threshold.

Referring to fig. 3, a data transmission processing method according to an embodiment of the application is shown. The method may be performed by a terminal, where the terminal may be a terminal in the network architecture shown in fig. 1. The method may comprise the steps of:

in step 301, when the terminal is in an RRC inactive state and the first condition is met, the processing is selected in the manner of RA-SDT.

In the embodiment of the application, when the terminal is in the RRC inactive state, if data needs to be transmitted, whether the first condition for selecting RA-SDT is met can be detected.

Wherein the first condition comprises at least one of the following conditions:

1) The data to be transmitted is all from Radio Bearers (RBs) that allow the SDT to be triggered.

When the terminal is in an RRC inactive state and data to be transmitted exists, the terminal can detect whether the data to be transmitted is all from radio bearers which allow the SDT to be triggered, if so, the condition for subsequently starting RA-SDT transmission can be met, otherwise, the condition for subsequently starting RA-SDT transmission is considered not to be met.

2) The amount of data to be transmitted is less than or equal to a data amount threshold of the network configuration.

When the terminal is in an RRC inactive state and there is data to be transmitted, the terminal may detect whether the data amount to be transmitted is less than or equal to a data amount threshold configured by the network (for example, the data amount threshold may be a maximum TB size preconfigured by the network side), if so, a subsequent RA-SDT transmission starting condition may be satisfied, otherwise, a subsequent RA-SDT transmission starting condition is considered not satisfied.

3) The downlink RSRP measurement is greater than or equal to the RSRP threshold at which SDT is performed.

When the terminal is in an RRC inactive state and data to be transmitted exist, the terminal can detect whether a downlink RSRP measurement result is greater than or equal to an RSRP threshold for executing SDT, if so, the condition for subsequently starting RA-SDT transmission can be met, otherwise, the condition for subsequently starting RA-SDT transmission is considered not to be met.

4) The selected carrier has RA-SDT resources and no active CG-SDT resources.

When the terminal is in an RRC inactive state and data to be transmitted exist, the terminal can detect whether the currently selected carrier has RA-SDT resources and no effective CG-SDT resources, if yes, the condition for subsequently starting RA-SDT transmission can be possibly met, otherwise, the condition for subsequently starting RA-SDT transmission is considered to be unsatisfied.

For example, if the selected carrier has valid CG-SDT resources, the terminal may preferentially perform the CG-SDT procedure; or if the selected carrier does not have the RA-SDT resource, the terminal considers that the following condition for starting RA-SDT transmission is not met.

Step 302, SSB for RA-SDT is selected based on a first RSRP threshold.

When the terminal is in an RRC inactive state and a first condition is met, the terminal determines to select to process in an RA-SDT mode, and selects SSB for the RA-SDT according to a first RSRP threshold.

In a possible implementation manner of the embodiment of the present application, when the terminal determines that the processing is performed in the RA-SDT manner, the terminal may detect whether there is at least one reference signal SS-RSRP corresponding to the SSB that is higher than or equal to the first RSRP threshold, and if yes, select an SSB for the RA-SDT from the SSBs corresponding to the SS-RSRP that is higher than or equal to the first RSRP threshold.

In a possible implementation manner of the embodiment of the present application, when the terminal determines that the processing is performed in the RA-SDT manner, if there is at least one reference signal SS-RSRP corresponding to the SSB that is higher than or equal to the first RSRP threshold, any SSB is selected as the SSB for the RA-SDT.

In one possible implementation manner of the embodiment of the present application, when the terminal determines that the processing is performed in the RA-SDT manner, if there is no reference signal SS-RSRP corresponding to at least one SSB that is higher than or equal to the first RSRP threshold, the SSB for the RA-SDT is not selected.

Step 303, determining a data transmission mode according to the selection result of the SSB for RA-SDT and executing, where the data transmission mode includes executing RA-SDT or executing rollback, and executing rollback includes: back to the random access RA procedure or back to the radio resource control RRC connection recovery procedure.

when at least one SSB corresponding to the reference signal SS-RSRP is higher than or equal to the first RSRP threshold, selecting one SSB from SSBs with the corresponding SS-RSRP higher than or equal to the first RSRP threshold to execute RA-SDT.

In the embodiment of the present application, if the terminal detects that there is at least one SSB corresponding to a reference signal SS-RSRP that is higher than or equal to the first RSRP threshold, and selects one SSB for RA-SDT from SSBs with corresponding SS-RSRP that is higher than or equal to the first RSRP threshold, the RA-SDT procedure may be performed by the selected SSB.

when there is no SSB whose corresponding SS-RSRP is higher than or equal to the first RSRP threshold, selecting any SSB to execute RA-SDT.

In the embodiment of the present application, if the terminal detects that the reference signal SS-RSRP corresponding to at least one SSB is higher than or equal to the first RSRP threshold, and selects one SSB for RA-SDT at random, the RA-SDT process may be performed by the selected SSB.

when there is no SSB with the corresponding SS-RSRP higher than or equal to the first RSRP threshold, the RA procedure is performed according to the RA configuration on the current bandwidth part BWP.

In the embodiment of the present application, if the terminal detects that there is no reference signal SS-RSRP corresponding to at least one SSB that is higher than or equal to the first RSRP threshold and that is not selected for the SSB of the RA-SDT, the RA procedure may be performed according to the RA configuration on the current BWP.

And when the corresponding SSB with the SS-RSRP higher than or equal to the first RSRP threshold does not exist, executing an RA procedure corresponding to the RA-SDT type selected by the terminal according to the RA configuration on the current BWP.

In the embodiment of the present application, when the terminal performs an RA procedure according to the RA configuration on the current BWP, the terminal may perform a corresponding RA procedure according to the selected RA-SDT type.

In one possible implementation, when there is no SSB with the corresponding SS-RSRP higher than or equal to the first RSRP threshold, performing, according to the RA configuration on the current BWP, an RA procedure corresponding to the RA-SDT type selected by the terminal, including:

when no corresponding SSB with SS-RSRP higher than or equal to the first RSRP threshold exists, executing an RA process corresponding to the RA-SDT type selected by the terminal according to the RA configuration on the current BWP, the first RSRP threshold and the second RSRP threshold;

wherein the second RSRP threshold is a threshold for selecting SSBs for RA.

In the embodiment of the application, when the terminal executes the RA procedure corresponding to the RA-SDT type selected by the terminal according to the RA configuration on the current BWP, the RA procedure corresponding to the RA-SDT type selected by the terminal can be executed by combining the RA configuration, the first RSRP threshold and the second RSRP threshold for selecting the SSB of the RA.

In one possible implementation, the first RSRP threshold is equal to the second RSRP threshold; that is, two RSRP thresholds are configured in the terminal, namely a first RSRP threshold and a second RSRP threshold, and the values of the two RSRP thresholds are equal.

Or the first RSRP threshold and the second RSRP threshold are the same threshold parameter; that is, a single RSRP threshold is configured in the terminal and is used as both the first RSRP threshold and the second RSRP threshold.

Alternatively, the first RSRP threshold is not equal to the second RSRP threshold; that is, two RSRP thresholds are configured in the terminal, namely a first RSRP threshold and a second RSRP threshold, and the values of the two RSRP thresholds are not equal.

In one possible implementation, when there is no SSB with the corresponding SS-RSRP higher than or equal to the first RSRP threshold, executing an RA procedure corresponding to the RA-SDT type selected by the terminal according to the RA configuration on the current BWP, the first RSRP threshold, and the second RSRP threshold, including:

when no SSB with the corresponding SS-RSRP higher than or equal to the first RSRP threshold exists, the RA-SDT type selected by the terminal is 2 steps RA-SDT, resources for 2 steps RA exist on the current BWP, and the first RSRP threshold is equal to the second RSRP threshold or the first RSRP threshold and the second RSRP are the same threshold parameter, one SSB is randomly selected to execute a 2 steps RA process; that is, when the RA procedure corresponding to the RA-SDT type selected by the terminal is performed in combination with the RA configuration, the first RSRP threshold, and the second RSRP threshold for selecting the SSB of RA, if the RA-SDT type currently selected by the terminal is 2-step RA-SDT, resources for 2-step RA exist on the current BWP, and the first RSRP threshold is equal to or the same as the second RSRP threshold, the terminal may randomly select one SSB to perform the 2-step RA procedure corresponding to the 2-step RA-SDT;

Or when there is no SSB with the corresponding SS-RSRP higher than or equal to the first RSRP threshold, the RA-SDT type selected by the terminal is 2-step RA-SDT, and there is a resource for 2-step RA on the current BWP, and the first RSRP threshold is not equal to the second RSRP threshold, executing a 2-step RA procedure according to the SSB determined by the second RSRP threshold; that is, when the RA procedure corresponding to the RA-SDT type selected by the terminal is performed in combination with the RA configuration, the first RSRP threshold, and the second RSRP threshold for selecting the SSB of RA, if the RA-SDT type currently selected by the terminal is 2-step RA-SDT, resources for 2-step RA exist on the current BWP, and the first RSRP threshold is not equal to the second RSRP threshold, the terminal may perform the 2-step RA procedure corresponding to the 2-step RA-SDT according to the SSB determined by the second RSRP threshold.

when no SSB with the corresponding SS-RSRP higher than or equal to the first RSRP threshold exists, the RA-SDT type selected by the terminal is 4 steps RA-SDT, and the first RSRP threshold is equal to the second RSRP threshold or the first RSRP threshold and the second RSRP are the same threshold parameter, randomly selecting one SSB to execute a 4 steps RA process; that is, when the RA procedure corresponding to the RA-SDT type selected by the terminal is performed in combination with the RA configuration, the first RSRP threshold, and the second RSRP threshold for selecting the SSB of RA, if the RA-SDT type currently selected by the terminal is 4 steps RA-SDT, resources for 4 steps RA exist on the current BWP, and the first RSRP threshold is equal to or the same as the second RSRP threshold, the terminal may randomly select one SSB to perform the 4 steps RA procedure corresponding to the 4 steps RA-SDT;

Or when there is no SSB with the corresponding SS-RSRP higher than or equal to the first RSRP threshold, the RA-SDT type selected by the terminal is 4 steps RA-SDT, and the first RSRP threshold is not equal to the second RSRP threshold, executing a 4 steps RA procedure according to the SSB determined by the second RSRP threshold; that is, when the RA procedure corresponding to the RA-SDT type selected by the terminal is performed in combination with the RA configuration, the first RSRP threshold, and the second RSRP threshold for selecting the SSB of RA, if the RA-SDT type currently selected by the terminal is 4-step RA-SDT, resources for 4-step RA exist on the current BWP, and the first RSRP threshold is not equal to the second RSRP threshold, the terminal may perform the 4-step RA procedure corresponding to the 4-step RA-SDT according to the SSB determined by the second RSRP threshold.

when no SSB exists, the corresponding SS-RSRP of which is higher than or equal to the first RSRP threshold, the RA-SDT type selected by the terminal is 2 steps RA-SDT, and the current BWP does not have resources for 2 steps RA, executing a 4 steps RA process according to the SSB determined by the second RSRP threshold; that is, when the RA procedure corresponding to the RA-SDT type selected by the terminal is performed in combination with the RA configuration, the first RSRP threshold, and the second RSRP threshold for selecting the SSB of RA, if the RA-SDT type currently selected by the terminal is 2-step RA-SDT and the current BWP does not have resources for 2-step RA, the terminal may directly perform the 4-step RA procedure according to the SSB determined by the second RSRP threshold.

when there is no SSB with the corresponding SS-RSRP higher than or equal to the first RSRP threshold, the terminal falls back to a 4-step RA procedure.

In another possible implementation manner of the embodiment of the present application, if there is no SSB with the corresponding SS-RSRP higher than or equal to the first RSRP threshold, the terminal may directly fall back to the 4-step RA procedure, for example, directly execute the 4-step RA procedure according to the SSB determined by the second RSRP threshold.

when no corresponding SSB with the SS-RSRP higher than or equal to the first RSRP threshold exists, the terminal backs to an RA procedure and re-selects an RA type according to a third RSRP threshold;

The process of the terminal returning to the RA procedure and reselecting the RA type according to the third RSRP threshold includes two implementations:

mode 1: the carrier selection is not re-executed, and the RA type is directly selected according to the third RSRP;

Mode 2: and re-executing carrier selection and other steps to complete a complete RACH process.

In another possible implementation manner of the embodiment of the present application, if there is no SSB with the corresponding SS-RSRP higher than or equal to the first RSRP threshold, the terminal may also fall back to an RA procedure for reselecting the RA type, for example, first selecting the RA type through the third RSRP threshold, and then executing the RA procedure corresponding to the selected RA type according to the SSB determined by the second RSRP threshold.

In one possible implementation, when the data transmission mode includes performing backoff, determining the data transmission mode according to a selection result of SSB for RA-SDT and performing, including:

or determining that the SDT process is not successfully completed or canceled, and sending an indication that the SDT is canceled or not completed to an upper layer; when the upper layer receives the indication, the SDT is canceled by the upper layer, and the RRC connection recovery process is restarted.

According to the scheme of the embodiment of the application, when there is no SSB with the corresponding SS-RSRP higher than or equal to the first RSRP threshold, the terminal can optionally execute the RA-SDT process by one SSB. For example, please refer to fig. 4, which illustrates a flowchart of an RA-SDT execution method according to an embodiment of the present application. As shown in fig. 4, the process may include the steps of:

S41, the UE in the RRC_INACTIVE state selects RA-SDT when the first condition is met.

Wherein the first condition may include at least:

all data to be transmitted comes from RBs that allow triggering of SDT;

the selected carrier has RA-SDT resources and no active CG-SDT resources.

The actions performed by the UE after selecting RA-SDT include at least:

s42a, selecting an RA-SDT type, e.g., if only one type of RA-SDT resource, i.e., one of 2-step RA-SDT or 4-step RA-SDT, is configured on the current BWP, the UE selects the RA-SDT type configured on the current BWP; otherwise, the UE performs a selection between 2-step RA-SDT and 4-step RA-SDT according to a fourth RSRP threshold for the UE to select between the two RA-SDT types.

S42b, initializing parameter configuration according to the determined RA-SDT type; such as initial power configuration, maximum number of transmissions configuration, RSRP threshold configuration, etc.

S42c, selecting random access resources, including: the SSB is selected according to a first RSRP threshold.

If at least one SSB is greater than the first RSRP threshold, the UE selects one of the SSB to execute RA-SDT; for example, assuming that 8 SSBs are currently supported, the UE measures a reference signal of each SSB, determines a downlink RSRP measurement result corresponding to each SSB, and then compares the measurement results of the 8 SSBs with a first RSRP threshold to determine whether the RSRP measurement result of at least one SSB is greater than the first RSRP threshold.

If none of the SSB's is greater than the first RSRP threshold, the UE optionally performs RA-SDT with one SSB.

S42d, an access preamble (preamble), paging Occasion (PO), or random access Occasion (RACH) is selected.

According to the scheme provided by the embodiment of the application, when the corresponding SSB with the SS-RSRP higher than or equal to the first RSRP threshold does not exist, the terminal can fall back to RA and re-execute the RA procedure. For example, please refer to fig. 5, which illustrates a flowchart of performing rollback according to an embodiment of the present application. As shown in fig. 5, the process may include the steps of:

s51, the UE in the RRC_INACTIVE state selects RA-SDT when the first condition is met.

The first condition includes at least:

all data to be transmitted comes from RBs (Radio bearers) that allow triggering of the SDT;

the selected carrier has RA-SDT resources and no active CG-SDT resources.

The actions of the UE after selecting RA-SDT at least comprise:

s52a, selecting the RA-SDT type. For example, if only one type of RA-SDT resource, i.e., one of 2-step RA-SDT or 4-step RA-SDT, is configured on the current BWP, the UE selects the RA-SDT type configured on the current BWP; otherwise, the UE performs selection between the 2-step RA-SDT and the 4-step RA-SDT according to a fourth RSRP threshold, wherein the fourth RSRP threshold is used for the UE to select between two RA-SDT types; for example, when the RSRP measured by the UE is greater than the third RSRP threshold, then 2-step RA-SDT is selected, otherwise 4-step RA-SDT is selected.

And S52b, initializing parameter configuration according to the determined RA-SDT type.

And S52c, selecting random access resources.

The process may include:

selecting SSB according to a first RSRP threshold; if at least one SSB is greater than the first RSRP threshold, the UE selects one of the SSB to execute RA-SDT; if none of the SSBs is greater than the first RSRP threshold, the UE behavior includes:

the SDT procedure is deemed to have not completed or canceled the SDT successfully, the UE initiates a legacy RA and/or indicates that the upper layer SDT procedure has not completed or canceled successfully.

S53, the UE initiates an RA procedure. The process may include:

carrier selection, RA type selection, parameter initialization, SSB selection, preamble selection, RO selection, etc. are performed.

In addition, the UE may also indicate that the upper SDT procedure has been cancelled or not completed successfully, and the upper layer triggers the RRC resume procedure of legacy.

The higher layer may be an RRC layer and/or a NAS layer.

According to the scheme provided by the embodiment of the application, when the corresponding SSB with the SS-RSRP higher than or equal to the first RSRP threshold does not exist, the terminal can fall back to RA and re-execute the RA procedure. For example, please refer to fig. 6, which illustrates a flowchart of performing rollback according to an embodiment of the present application. As shown in fig. 6, the process may include the following steps.

S61, the UE in rrc_inactive state selects RA-SDT if the first condition is satisfied.

Wherein the first condition includes at least:

the data to be transmitted are all from RBs (Radio bearers) that allow triggering of the SDT;

the selected carrier has RA-SDT resources and no active CG-SDT resources.

The actions of the UE after selecting RA-SDT at least comprise:

s62a, selecting an RA-SDT type, specifically, if only one type of RA-SDT resource, namely one of 2-step RA-SDT or 4-step RA-SDT, is configured on the current BWP, the UE selects the RA-SDT type configured on the current BWP; otherwise, the UE performs selection between the 2-step RA-SDT and the 4-step RA-SDT according to a fourth RSRP threshold, wherein the fourth RSRP threshold is used for the UE to select between two RA-SDT types;

s62b, initializing parameter configuration according to the determined RA-SDT type;

and S62c, selecting random access resources. The process comprises the following steps: selecting SSB according to a first RSRP threshold; if at least one SSB is greater than the first RSRP threshold, the UE selects one of the SSB to execute RA-SDT; if none of the SSBs is greater than the first RSRP threshold, the UE acts including: the SDT procedure is deemed to have not completed or canceled the SDT successfully, the UE initiates a legacy RA and/or indicates that the upper layer SDT procedure has not completed or canceled successfully.

S63, the UE initiates a legacy RA procedure. The process may include:

if the type of RA-SDT selected by the UE is 2-step RA-SDT, the UE is backed off to 2-step RA, and if the current BWP is not configured with 2-step RA, the UE is backed off to 4-step RA; if the RA-SDT type selected by the UE is 4-step RA-SDT, the UE is retracted to 4-step RA; or the UE rolls back to the 4-step RA;

if the UE is backed off to the 2-step RA from the 2-step RA-SDT, and the first RSRP threshold is equal to the second RSRP threshold or the first RSRP threshold is the same as the second RSRP threshold, the UE randomly selects one SSB to execute the 2-step RA; if the first RSRP threshold is not equal to the second RSRP threshold, the UE determines that the SSB executes 2-step RA according to the second RSRP threshold;

if the UE is backed off to the 4-step RA from the 4-step RA-SDT, and the first RSRP threshold is equal to the second RSRP threshold or the first RSRP threshold is the same as the second RSRP threshold, the UE randomly selects one SSB to execute the 4-step RA; if the first RSRP threshold is not equal to the second RSRP threshold, the UE determines that the SSB executes 4-step RA according to the second RSRP threshold;

if the UE is rolled back to 4-step RA by 2-step RA-SDT, the UE determines that the SSB performs 4-step RA according to the second RSRP threshold.

In the legacy RA procedure described above, the terminal may directly select the RA type without performing the carrier selection procedure, and perform the parameter initialization step according to the selected RA type.

Referring to fig. 7, a data transmission processing method according to an embodiment of the application is shown. The method may be performed by a terminal, where the terminal may be a terminal in the network architecture shown in fig. 1. The method may comprise the steps of:

step 701, when the terminal is in an RRC inactive state and a second condition is met, selecting to execute RA-SDT; the second condition includes: there is an SSB where the corresponding SS-RSRP is greater than or equal to the first RSRP threshold.

When the terminal is in an RRC inactive state and data to be transmitted exists, the terminal can detect whether SSB larger than a first RSRP threshold exists, and if so, the terminal considers that RA-SDT can be executed.

In summary, in the scheme shown in the embodiment of the present application, for the uplink small data procedure, the terminal may determine whether to execute RA-SDT according to an RSRP threshold, so as to provide a scheme for selecting to transmit data in RA-SDT mode according to the RSRP threshold.

Referring to fig. 8, a data transmission processing method according to an embodiment of the application is shown. The method may be performed by a terminal, where the terminal may be a terminal in the network architecture shown in fig. 1. The method may comprise the steps of:

step 801, when the terminal is in an RRC inactive state and a second condition is satisfied, selecting to execute RA-SDT; the second condition includes: there is an SSB where the corresponding SS-RSRP is greater than or equal to the first RSRP threshold.

In one possible implementation, when the terminal satisfies the condition of 2-step RA-SDT, the first RSRP threshold is carried by configuration information of 2-step RA-SDT;

when the terminal satisfies the condition of 4 steps RA-SDT, the first RSRP threshold is carried by the configuration information of 4 steps RA-SDT.

the selected carrier has RA-SDT resources and no active CG-SDT resources.

Step 802, selecting to execute RA when the terminal is in RRC inactive state and the second condition is not satisfied.

In the embodiment of the present application, if the terminal is in the RRC inactive state and the second condition is not satisfied, for example, when there is no SSB where the corresponding SS-RSRP is greater than or equal to the first RSRP threshold, the terminal may directly execute the RA procedure.

In the embodiment of the present application, the terminal uses the SSB that satisfies the first RSRP threshold as one of the conditions for selecting RA-SDT, that is, the UE in rrc_inactive state selects RA-SDT if the first condition is satisfied, otherwise, the UE selects RA, where the first condition includes:

all data to be transmitted comes from RBs that allow triggering of SDT;

the selected carrier has RA-SDT resources and no valid CG-SDT resources;

there is an SSB greater than the first RSRP threshold.

Wherein the determining whether there is an SSB greater than the first RSRP threshold is performed based on the RA-SDT type selected by the UE; for example, if the UE satisfies the condition of 2-step RA-SDT (e.g., the condition that satisfies 2-step RA-SDT may include the presence of resources for 2-step RA-SDT by the current BWP), then the first RSRP threshold included in the configuration of 2-step RA-SDT is used, and if the UE satisfies the condition of 4-step RA-SDT (e.g., the condition that satisfies 4-step RA-SDT may include the absence of resources for 2-step RA-SDT by the current BWP), then the first RSRP threshold included in the configuration of 4-step RA-SDT is used.

In summary, in the scheme shown in the embodiment of the present application, for the uplink small data procedure, the terminal may determine whether to execute RA-SDT or RA according to an RSRP threshold, so as to provide a scheme for selecting RA-SDT or RA according to the RSRP threshold to perform data transmission.

The following are examples of the apparatus of the present application that may be used to perform the method embodiments of the present application. For details not disclosed in the embodiments of the apparatus of the present application, please refer to the embodiments of the method of the present application.

Referring to fig. 9, a block diagram of a data transmission processing apparatus according to an embodiment of the present application is shown. The device is used in the terminal and has the function of realizing the steps executed by the terminal in the data transmission processing method. As shown in fig. 9, the apparatus may include:

a selecting module 901, configured to select a synchronization signal block SSB of a small data transmission RA-SDT for random access according to a first reference signal received power RSRP threshold;

a processing module 902, configured to determine a data transmission manner according to a selection result of the SSB for RA-SDT and execute the data transmission manner, where the data transmission manner includes executing RA-SDT or executing rollback, and the executing rollback includes: back to the random access RA procedure or back to the radio resource control RRC connection recovery procedure.

In one possible implementation, the processing module 902 is configured to,

Wherein the second RSRP threshold is a threshold for selecting SSBs for RA.

or when there is no SSB with the corresponding SS-RSRP higher than or equal to the first RSRP threshold, the RA-SDT type selected by the terminal is 2-step RA-SDT, and there is a resource for 2-step RA on the current BWP, and the first RSRP threshold is not equal to the second RSRP threshold, executing a 2-step RA procedure according to the SSB determined by the second RSRP threshold.

or when no SSB exists, the corresponding SS-RSRP of which is higher than or equal to the first RSRP threshold, the RA-SDT type selected by the terminal is 4 steps RA-SDT, and the first RSRP threshold is not equal to the second RSRP threshold, executing a 4 steps RA procedure according to the SSB determined by the second RSRP threshold.

or,

the first condition includes at least one of the following conditions:

the selected carrier has RA-SDT resources and no active CG-SDT resources.

Referring to fig. 10, a block diagram of a data transmission processing apparatus according to an embodiment of the present application is shown. The device is used in the terminal and has the function of realizing the steps executed by the terminal in the data transmission processing method. As shown in fig. 10, the apparatus may include:

a selection module 1001, configured to execute RA-SDT when the terminal is in an RRC inactive state and a second condition is satisfied;

the selected carrier has RA-SDT resources and no active CG-SDT resources.

It should be noted that, when the apparatus provided in the foregoing embodiment performs the functions thereof, only the division of the respective functional modules is used as an example, in practical application, the foregoing functional allocation may be performed by different functional modules according to actual needs, that is, the content structure of the device is divided into different functional modules, so as to perform all or part of the functions described above.

The specific manner in which the various modules perform the operations in the apparatus of the above embodiments have been described in detail in connection with the embodiments of the method, and will not be described in detail herein.

Referring to fig. 11, a schematic structural diagram of a computer device 1100 according to an embodiment of the application is shown. The computer device 1100 may include: a processor 1101, a receiver 1102, a transmitter 1103, a memory 1104 and a bus 1105.

The processor 1101 includes one or more processing cores, and the processor 1101 executes various functional applications and information processing by running software programs and modules.

The receiver 1102 and the transmitter 1103 may be implemented as one communication component, which may be a communication chip. The communication chip may also be referred to as a transceiver.

The memory 1104 is connected to the processor 1101 through a bus 1105.

The memory 1104 may be used for storing a computer program, and the processor 1101 is used for executing the computer program to implement the steps performed by the terminal device in the above-described method embodiment.

Further, the memory 1104 may be implemented by any type or combination of volatile or nonvolatile memory devices including, but not limited to: magnetic or optical disks, electrically erasable programmable read-only memory, static random access memory, read-only memory, magnetic memory, flash memory, programmable read-only memory.

In an exemplary embodiment, the computer device includes a processor, a memory, and a transceiver (which may include a receiver for receiving information and a transmitter for transmitting information);

in one possible implementation, when the computer device is implemented as a terminal,

the processor is configured to select a synchronization signal block SSB of the small data transmission RA-SDT for random access according to a first reference signal received power RSRP threshold;

the processor is further configured to determine a data transmission manner according to a selection result of the SSB for RA-SDT and execute the data transmission manner, where the data transmission manner includes executing RA-SDT or executing rollback, and the executing rollback includes: back to the random access RA procedure or back to the radio resource control RRC connection recovery procedure.

In another possible implementation, when the computer device is implemented as a terminal, the processor is configured to execute RA-SDT when the terminal is in an RRC inactive state and the second condition is satisfied;

The steps of the method performed by the terminal in the embodiment of the present application may refer to all or part of the steps performed by the terminal in the embodiments shown in fig. 2, 3, 7 or 8, which are not described herein.

The embodiment of the application also provides a computer readable storage medium, wherein a computer program is stored in the storage medium, and the computer program is loaded and executed by a processor to realize each step executed by a terminal in the method shown in the above fig. 2 or 3.

The present application also provides a computer program product comprising computer instructions stored in a computer readable storage medium. The processor of the computer device reads the computer instructions from the computer readable storage medium and executes the computer instructions to cause the computer device to perform the steps performed by the terminal in the methods shown in fig. 2, 3, 7, or 8 described above.

The application also provides a chip for running in a computer device to cause the computer device to perform the steps performed by a terminal in the method as shown in fig. 2, 3, 7 or 8 above.

The present application also provides a computer program to be executed by a processor of a computer device to implement the steps performed by a terminal in the method as shown in fig. 2, 3, 7 or 8 described above.

Those skilled in the art will appreciate that in one or more of the examples described above, the functions described in the embodiments of the present application may be implemented in hardware, software, firmware, or any combination thereof. When implemented in software, these functions may be stored on or transmitted over as one or more instructions or code on a computer-readable medium. Computer-readable media includes both computer storage media and communication media including any medium that facilitates transfer of a computer program from one place to another. A storage media may be any available media that can be accessed by a general purpose or special purpose computer.

The foregoing description of the exemplary embodiments of the application is not intended to limit the application to the particular embodiments disclosed, but on the contrary, the intention is to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the application.

Claims

A data transmission processing method, wherein the method is performed by a terminal, the method comprising:

selecting a synchronization signal block SSB of the small data transmission RA-SDT for random access according to a first reference signal received power RSRP threshold;

Determining a data transmission mode according to a selection result of the SSB for the RA-SDT and executing the data transmission mode, wherein the data transmission mode comprises the execution of the RA-SDT or the execution of the rollback, and the execution of the rollback comprises the following steps: back to the random access RA procedure or back to the radio resource control RRC connection recovery procedure.
The method of claim 1, wherein determining and performing the data transmission scheme based on the selection result of the SSB for RA-SDT, comprises:

when at least one reference signal SS-RSRP corresponding to the SSB is higher than or equal to the first RSRP threshold, selecting one SSB from the SSBs with the corresponding SS-RSRP higher than or equal to the first RSRP threshold to execute RA-SDT.
The method of claim 1, wherein determining and performing the data transmission scheme based on the selection result of the SSB for RA-SDT, comprises:

and when no corresponding SSB with the SS-RSRP higher than or equal to the first RSRP threshold exists, selecting any SSB to execute RA-SDT.
The method of claim 1, wherein determining and performing the data transmission scheme based on the selection result of the SSB for RA-SDT, comprises:

and when no corresponding SSB with the SS-RSRP higher than or equal to the first RSRP threshold exists, executing an RA procedure according to the RA configuration on the current bandwidth part BWP.
The method of claim 4, wherein performing an RA procedure according to an RA configuration on a current bandwidth portion BWP when there is no SSB for which the corresponding SS-RSRP is higher than or equal to the first RSRP threshold, comprises:

and when no corresponding SSB with the SS-RSRP higher than or equal to the first RSRP threshold exists, executing an RA procedure corresponding to the RA-SDT type selected by the terminal according to the RA configuration on the current BWP.
The method of claim 5, wherein performing the RA procedure corresponding to the RA-SDT type selected by the terminal according to the RA configuration on the current BWP when there is no SSB for which the corresponding SS-RSRP is higher than or equal to the first RSRP threshold, comprises:

when no corresponding SSB with the SS-RSRP higher than or equal to the first RSRP threshold exists, executing an RA process corresponding to the RA-SDT type selected by the terminal according to the RA configuration on the current BWP, the first RSRP threshold and the second RSRP threshold;

wherein the second RSRP threshold is a threshold for selecting SSBs for RA.
The method of claim 6, wherein the step of providing the first layer comprises,

the first RSRP threshold is equal to the second RSRP threshold;

or the first RSRP threshold and the second RSRP threshold are the same threshold parameter;

Alternatively, the first RSRP threshold is not equal to the second RSRP threshold.
The method of claim 6, wherein performing the RA procedure corresponding to the RA-SDT type selected by the terminal according to the RA configuration on the current BWP, the first RSRP threshold, and the second RSRP threshold when there is no SSB with the corresponding SS-RSRP higher than or equal to the first RSRP threshold, comprises:

when no corresponding SSB with the SS-RSRP higher than or equal to the first RSRP threshold exists, the RA-SDT type selected by the terminal is 2 steps of RA-SDT, resources for 2 steps of RA exist on the current BWP, and the first RSRP threshold is equal to the second RSRP threshold or the first RSRP threshold and the second RSRP are the same threshold parameter, one SSB is randomly selected to execute a 2 steps of RA process;

or,

and when no SSB with the corresponding SS-RSRP higher than or equal to the first RSRP threshold exists, the RA-SDT type selected by the terminal is 2 steps RA-SDT, resources for 2 steps RA exist on the current BWP, and the first RSRP threshold is not equal to the second RSRP threshold, executing a 2 steps RA process according to the SSB determined by the second RSRP threshold.
The method of claim 6, wherein performing the RA procedure corresponding to the RA-SDT type selected by the terminal according to the RA configuration on the current BWP, the first RSRP threshold, and the second RSRP threshold when there is no SSB with the corresponding SS-RSRP higher than or equal to the first RSRP threshold, comprises:

When no SSB with the corresponding SS-RSRP higher than or equal to the first RSRP threshold exists, the RA-SDT type selected by the terminal is 4 steps RA-SDT, and the first RSRP threshold is equal to the second RSRP threshold or the first RSRP threshold and the second RSRP are the same threshold parameter, randomly selecting one SSB to execute a 4 steps RA process;

or,

and when no SSB with the corresponding SS-RSRP higher than or equal to the first RSRP threshold exists, the RA-SDT type selected by the terminal is 4 steps RA-SDT, and the first RSRP threshold is not equal to the second RSRP threshold, executing a 4 steps RA process according to the SSB determined by the second RSRP threshold.
The method of claim 6, wherein performing the RA procedure corresponding to the RA-SDT type selected by the terminal according to the RA configuration on the current BWP, the first RSRP threshold, and the second RSRP threshold when there is no SSB with the corresponding SS-RSRP higher than or equal to the first RSRP threshold, comprises:

and when no SSB with the corresponding SS-RSRP higher than or equal to the first RSRP threshold exists, the RA-SDT type selected by the terminal is 2 steps RA-SDT, and the current BWP does not have resources for 2 steps RA, executing a 4 steps RA process according to the SSB determined by the second RSRP threshold.
The method of claim 1, wherein determining and performing the data transmission scheme based on the selection result of the SSB for RA-SDT, comprises:

and when no corresponding SSB with the SS-RSRP higher than or equal to the first RSRP threshold exists, the terminal backs to a 4-step RA procedure.
The method of claim 1, wherein determining and performing the data transmission scheme based on the selection result of the SSB for RA-SDT, comprises:

when no corresponding SSB with the SS-RSRP higher than or equal to the first RSRP threshold exists, the terminal backs to an RA process and reselects an RA type according to a third RSRP threshold;

wherein the third RSRP threshold is used for the terminal to select between two RA types.
The method of claim 1, wherein when the first data transmission mode includes performing backoff, the determining the data transmission mode according to the selection result of the SSB for RA-SDT and performing comprises:

determining that the SDT process is not successfully completed or the SDT process is cancelled, backing to the RA process, and informing an upper layer that the SDT is cancelled or not successfully completed;

or,

determining that the SDT process is not successfully completed or canceled, and sending an indication that the SDT is canceled or not completed to an upper layer; and when the upper layer receives the indication, canceling the SDT through the upper layer and reinitiating the RRC connection recovery process.
The method according to claim 1, characterized in that before the selecting of the synchronization signal block SSB for the random access small data transmission RA-SDT according to the first reference signal received power RSRP threshold, further comprises:

when the terminal is in an RRC inactive state and meets a first condition, selecting to process in an RA-SDT mode;

the first condition includes at least one of the following conditions:

the data to be transmitted are all from radio bearers RB that allow triggering of SDT;

the data quantity to be transmitted is smaller than or equal to the data quantity threshold of the network configuration;

the downlink RSRP measurement result is greater than or equal to the RSRP threshold for executing SDT;

the selected carrier has RA-SDT resources and no active CG-SDT resources.
A data transmission processing method, wherein the method is performed by a terminal, the method comprising:

when the terminal is in an RRC inactive state and a second condition is met, selecting to execute RA-SDT;

the second condition includes: there is an SSB where the corresponding SS-RSRP is greater than or equal to the first RSRP threshold.
The method of claim 15, wherein the step of determining the position of the probe is performed,

when the terminal meets the condition of 2 steps of RA-SDT, the first RSRP threshold is carried by configuration information of 2 steps of RA-SDT;

And when the terminal meets the condition of 4 steps of RA-SDT, the first RSRP threshold is carried by the configuration information of 4 steps of RA-SDT.
The method of claim 15, wherein the second condition further comprises at least one of:

the data to be transmitted are all from radio bearers RB that allow triggering of SDT;

the data quantity to be transmitted is smaller than or equal to the data quantity threshold of the network configuration;

the downlink RSRP measurement result is greater than or equal to the RSRP threshold for executing SDT;

the selected carrier has RA-SDT resources and no active CG-SDT resources.
The method of claim 15, wherein the method further comprises:

and when the terminal is in an RRC inactive state and the second condition is not satisfied, selecting to execute RA.
A data transmission processing apparatus, wherein the apparatus is used in a terminal, the apparatus comprising:

a selection module, configured to select a synchronization signal block SSB of a small data transmission RA-SDT for random access according to a first reference signal received power RSRP threshold;

a processing module, configured to determine a data transmission manner according to a selection result of the SSB for RA-SDT and execute the data transmission manner, where the data transmission manner includes executing RA-SDT or executing rollback, and the executing rollback includes: back to the random access RA procedure or back to the radio resource control RRC connection recovery procedure.
A data transmission processing apparatus, wherein the apparatus is used in a terminal, the apparatus comprising:

the processing module is used for selecting to execute RA-SDT when the terminal is in the RRC inactive state and the second condition is met;

the second condition includes: there is an SSB where the corresponding SS-RSRP is greater than or equal to the first RSRP threshold.
A computer device, characterized in that the computer device is implemented as a terminal, the computer device comprising a processor, a memory and a transceiver;

the processor is configured to select a synchronization signal block SSB of the small data transmission RA-SDT for random access according to a first reference signal received power RSRP threshold;

the processor is further configured to determine a data transmission manner according to a selection result of the SSB for RA-SDT and execute the data transmission manner, where the data transmission manner includes executing RA-SDT or executing rollback, and the executing rollback includes: back to the random access RA procedure or back to the radio resource control RRC connection recovery procedure.
A computer device, characterized in that the computer device is implemented as a terminal, the computer device comprising a processor, a memory and a transceiver;

The processor is configured to select to execute RA-SDT when the terminal is in an RRC inactive state and the second condition is satisfied;

the second condition includes: there is an SSB where the corresponding SS-RSRP is greater than or equal to the first RSRP threshold.
A computer-readable storage medium, in which a computer program is stored for execution by a processor to implement the data transmission processing method according to any one of claims 1 to 18.
A chip for running in a computer device to cause the computer device to perform the data transmission processing method according to any one of claims 1 to 18.
A computer program product, the computer program product comprising computer instructions stored in a computer readable storage medium; a processor of a computer device reads the computer instructions from the computer-readable storage medium and executes the computer instructions, so that the computer device performs the data transmission processing method according to any one of claims 1 to 18.
A computer program, characterized in that the computer program is executed by a processor of a computer device to implement the data transmission processing method according to any one of claims 1 to 18.