CN116546621A - A data transmission method, device, terminal and network equipment - Google Patents

Abstract

The invention provides a data transmission method, a device, a terminal and network equipment, wherein the data transmission method comprises the following steps: receiving a paging message sent by the network equipment under the condition of Radio Resource Control (RRC) non-activation state; the paging message carries indication information of SDT (downlink packet transfer); receiving downlink SDT according to the indication information; wherein the indication information includes at least one of: first information indicating a semi-persistent scheduling, SPS; second information indicating that the SPS usage level is higher than other resource usage levels; third information indicating use of upstream SDT resources; fourth information indicating that the usage level of the upstream SDT resource is higher than that of the other resources. The scheme well solves the problems of large transmission delay, signaling overhead waste and transmission resource overhead existing in the downlink data transmission scheme aiming at the RRC inactive terminal in the prior art.

Description

A data transmission method, device, terminal and network equipment

technical field

The present invention relates to the technical field of communication, and in particular to a data transmission method, device, terminal and network equipment.

Background technique

In the prior art, when downlink data arrives and the terminal is in RRC (Radio Resource Control, radio resource control) inactive (inactive) state, the core network or RAN (Radio Access Network, radio access network) will page the terminal The terminal triggers the terminal to initiate a random access procedure. Afterwards, because the terminal is in the RRC inactive state, the terminal will use MSG (Message, message) A or MSG3 to send an RRC resume (resume) request (request) to the network during the random access process; the subsequent network will feed back the RRC resume message to The terminal triggers the terminal to enter the RRC connected (connected) state from the RRC inactive state, and receive downlink data.

However, when the number of downlink data packets is small, the terminal enters the process of RRC connected, and the delay overhead is large; and when the terminal completes this data transmission, because there is no uplink and downlink business for a long time, the network may instruct the terminal to enter again The RRC inactive state is used for terminal energy saving; this will lead to waste of signaling overhead and transmission resource overhead.

It can be seen from the above that the downlink data transmission scheme for RRC inactive terminals in the prior art has problems such as large transmission delay, waste of signaling overhead and transmission resource overhead.

Contents of the invention

The purpose of the present invention is to provide a data transmission method, device, terminal and network equipment to solve the problems of large transmission delay, waste of signaling overhead and transmission resource overhead in the downlink data transmission scheme for RRC inactive terminals in the prior art .

In order to solve the above technical problems, an embodiment of the present invention provides a data transmission method applied to a terminal, including:

In the case of radio resource control RRC inactive state, receive the paging message sent by the network device; the paging message carries the instruction information of downlink small packet transmission SDT (Small data transmission, small packet data transmission, that is, small packet transmission) ;

Perform downlink SDT reception according to the indication information;

Wherein, the instruction information includes at least one of the following:

Indicates the first information of semi-persistent scheduling SPS (Semi-Persistent Scheduling);

Second information indicating that the usage level of the SPS is higher than that of other resources;

Third information indicating the use of uplink SDT resources;

Fourth information indicating that the usage level of the uplink SDT resources is higher than that of other resources.

Optionally, the receiving the downlink SDT according to the indication information includes at least one of the following:

If the indication information includes the first information and/or second information, and satisfies the condition of receiving downlink SDT based on SPS, according to the first identification information corresponding to the first information and/or second information, Receiving the downlink SDT; the first identity information includes: cell wireless network temporary identity RNTI (Radio Network TemporyIdentity) information, and/or RNTI information in the SPS configuration information;

When the indication information includes the third information and/or the fourth information, and the uplink SDT is completed, the uplink SDT resource is used to receive the downlink SDT.

Optionally, the condition for receiving the downlink SDT based on the SPS includes at least one of the following:

The signal quality of the synchronization signal block SSB is higher than the threshold value;

There are configured SPS resources on the SSB.

Optionally, receiving the downlink SDT according to the first identification information corresponding to the first information and/or the second information includes:

Perform downlink SDT reception on the first SPS resource according to the first identification information corresponding to the first information and/or the second information;

Wherein, the first SPS resource is the SPS resource indicated by the SPS configuration information corresponding to the first identification information;

The SPS configuration information includes at least one of the following:

Receive the SPS configuration information allocated before the RRC release message;

The SPS configuration information carried in the RRC release message.

Optionally, the SPS configuration information includes at least one of the following:

SPS cycle information;

The number information of the hybrid automatic repeat request HARQ (Hybrid Automatic Repeat Request) process corresponding to the SPS;

RNTI information corresponding to the configuration and scheduling of the SPS;

Offset information of the HARQ process corresponding to the SPS;

Information about the physical uplink control channel PUCCH (Physical Uplink ControlChannel) resource used for HARQ transmission corresponding to the SPS;

SPS corresponding modulation and coding strategy MCS (Modulation and Coding Scheme) information;

HARQ codebook information corresponding to SPS;

SPS configuration index information;

RNTI information corresponding to the SPS.

The embodiment of the present invention also provides a data transmission method applied to network equipment, including:

Sending a paging message to a terminal in an RRC inactive state; the paging message carries downlink small packet transmission SDT instruction information;

Wherein, the instruction information includes at least one of the following:

The first information indicating the semi-persistent scheduling SPS;

Second information indicating that the usage level of the SPS is higher than that of other resources;

Third information indicating the use of uplink SDT resources;

Fourth information indicating that the usage level of the uplink SDT resources is higher than that of other resources.

Optionally, also include:

According to the indication information, the downlink SDT is sent.

Optionally, the sending of the downlink SDT according to the indication information includes at least one of the following:

When the indication information includes the first information and/or the second information, and satisfies the condition of sending downlink SDT based on SPS, according to the first identification information corresponding to the first information and/or the second information, Sending downlink SDT; the first identification information includes: cell radio network temporary identification RNTI information, and/or RNTI information in SPS configuration information;

When the indication information includes the third information and/or the fourth information, and the uplink SDT is completed, the uplink SDT resource is used to send the downlink SDT.

Optionally, the condition for sending the downlink SDT based on the SPS includes at least one of the following:

The signal quality of the synchronization signal block SSB is higher than the threshold value;

There are configured SPS resources on the SSB.

Optionally, the sending the downlink SDT according to the first identification information corresponding to the first information and/or the second information includes:

performing downlink SDT transmission on the first SPS resource according to the first identification information corresponding to the first information and/or the second information;

Wherein, the first SPS resource is the SPS resource indicated by the SPS configuration information corresponding to the first identification information;

The SPS configuration information includes at least one of the following:

SPS configuration information allocated to the terminal before sending the RRC release message;

The SPS configuration information carried in the RRC release message.

Optionally, the SPS configuration information includes at least one of the following:

SPS cycle information;

The number information of the hybrid automatic repeat request HARQ process corresponding to the SPS;

RNTI information corresponding to the configuration and scheduling of the SPS;

Offset information of the HARQ process corresponding to the SPS;

Information about the physical uplink control channel PUCCH resource used for HARQ transmission corresponding to the SPS;

Modulation and coding strategy MCS information corresponding to SPS;

HARQ codebook information corresponding to SPS;

SPS configuration index information;

RNTI information corresponding to the SPS.

The embodiment of the present invention also provides a data transmission device applied to a terminal, including:

The first receiving module is configured to receive a paging message sent by a network device when the radio resource control RRC is in an inactive state; the paging message carries downlink small packet transmission SDT instruction information;

The second receiving module is configured to receive downlink SDT according to the indication information;

Wherein, the instruction information includes at least one of the following:

The first information indicating the semi-persistent scheduling SPS;

Second information indicating that the usage level of the SPS is higher than that of other resources;

Third information indicating the use of uplink SDT resources;

Fourth information indicating that the usage level of the uplink SDT resources is higher than that of other resources.

Optionally, the receiving the downlink SDT according to the indication information includes at least one of the following:

If the indication information includes the first information and/or second information, and satisfies the condition of receiving downlink SDT based on SPS, according to the first identification information corresponding to the first information and/or second information, Receiving the downlink SDT; the first identification information includes: cell wireless network temporary identification RNTI information, and/or RNTI information in SPS configuration information;

When the indication information includes the third information and/or the fourth information, and the uplink SDT is completed, the uplink SDT resource is used to receive the downlink SDT.

Optionally, the condition for receiving the downlink SDT based on the SPS includes at least one of the following:

The signal quality of the synchronization signal block SSB is higher than the threshold value;

There are configured SPS resources on the SSB.

Optionally, receiving the downlink SDT according to the first identification information corresponding to the first information and/or the second information includes:

Perform downlink SDT reception on the first SPS resource according to the first identification information corresponding to the first information and/or the second information;

Wherein, the first SPS resource is the SPS resource indicated by the SPS configuration information corresponding to the first identification information;

The SPS configuration information includes at least one of the following:

Receive the SPS configuration information allocated before the RRC release message;

The SPS configuration information carried in the RRC release message.

Optionally, the SPS configuration information includes at least one of the following:

SPS cycle information;

The number information of the hybrid automatic repeat request HARQ process corresponding to the SPS;

RNTI information corresponding to the configuration and scheduling of the SPS;

Offset information of the HARQ process corresponding to the SPS;

Information about the physical uplink control channel PUCCH resource used for HARQ transmission corresponding to the SPS;

Modulation and coding strategy MCS information corresponding to SPS;

HARQ codebook information corresponding to SPS;

SPS configuration index information;

RNTI information corresponding to the SPS.

The embodiment of the present invention also provides a data transmission device applied to network equipment, including:

The first sending module is configured to send a paging message to a terminal in an RRC inactive state; the paging message carries downlink small packet transmission SDT instruction information;

Wherein, the instruction information includes at least one of the following:

The first information indicating the semi-persistent scheduling SPS;

Second information indicating that the usage level of the SPS is higher than that of other resources;

Third information indicating the use of uplink SDT resources;

Fourth information indicating that the usage level of the uplink SDT resources is higher than that of other resources.

Optionally, also include:

The second sending module is configured to send the downlink SDT according to the indication information.

Optionally, the sending of the downlink SDT according to the indication information includes at least one of the following:

When the indication information includes the first information and/or the second information, and satisfies the condition of sending downlink SDT based on SPS, according to the first identification information corresponding to the first information and/or the second information, Sending downlink SDT; the first identification information includes: cell radio network temporary identification RNTI information, and/or RNTI information in SPS configuration information;

When the indication information includes the third information and/or the fourth information, and the uplink SDT is completed, the uplink SDT resource is used to send the downlink SDT.

Optionally, the condition for sending the downlink SDT based on the SPS includes at least one of the following:

The signal quality of the synchronization signal block SSB is higher than the threshold value;

There are configured SPS resources on the SSB.

Optionally, the sending the downlink SDT according to the first identification information corresponding to the first information and/or the second information includes:

performing downlink SDT transmission on the first SPS resource according to the first identification information corresponding to the first information and/or the second information;

Wherein, the first SPS resource is the SPS resource indicated by the SPS configuration information corresponding to the first identification information;

The SPS configuration information includes at least one of the following:

SPS configuration information allocated to the terminal before sending the RRC release message;

The SPS configuration information carried in the RRC release message.

Optionally, the SPS configuration information includes at least one of the following:

SPS cycle information;

The number information of the hybrid automatic repeat request HARQ process corresponding to the SPS;

RNTI information corresponding to the configuration and scheduling of the SPS;

Offset information of the HARQ process corresponding to the SPS;

Information about the physical uplink control channel PUCCH resource used for HARQ transmission corresponding to the SPS;

Modulation and coding strategy MCS information corresponding to SPS;

HARQ codebook information corresponding to SPS;

SPS configuration index information;

RNTI information corresponding to the SPS.

The embodiment of the present invention also provides a terminal, including: a processor and a transceiver;

The processor is configured to receive a paging message sent by a network device through the transceiver when the radio resource control RRC is in an inactive state; the paging message carries downlink small packet transmission SDT instruction information;

performing downlink SDT reception according to the indication information through the transceiver;

Wherein, the instruction information includes at least one of the following:

The first information indicating the semi-persistent scheduling SPS;

Second information indicating that the usage level of the SPS is higher than that of other resources;

Third information indicating the use of uplink SDT resources;

Fourth information indicating that the usage level of the uplink SDT resources is higher than that of other resources.

Optionally, the receiving the downlink SDT according to the indication information includes at least one of the following:

If the indication information includes the first information and/or second information, and satisfies the condition of receiving downlink SDT based on SPS, according to the first identification information corresponding to the first information and/or second information, Receiving the downlink SDT; the first identification information includes: cell wireless network temporary identification RNTI information, and/or RNTI information in SPS configuration information;

When the indication information includes the third information and/or the fourth information, and the uplink SDT is completed, the uplink SDT resource is used to receive the downlink SDT.

Optionally, the condition for receiving the downlink SDT based on the SPS includes at least one of the following:

The signal quality of the synchronization signal block SSB is higher than the threshold value;

There are configured SPS resources on the SSB.

Optionally, receiving the downlink SDT according to the first identification information corresponding to the first information and/or the second information includes:

Perform downlink SDT reception on the first SPS resource according to the first identification information corresponding to the first information and/or the second information;

Wherein, the first SPS resource is the SPS resource indicated by the SPS configuration information corresponding to the first identification information;

The SPS configuration information includes at least one of the following:

Receive the SPS configuration information allocated before the RRC release message;

The SPS configuration information carried in the RRC release message.

Optionally, the SPS configuration information includes at least one of the following:

SPS cycle information;

The number information of the hybrid automatic repeat request HARQ process corresponding to the SPS;

RNTI information corresponding to the configuration and scheduling of the SPS;

Offset information of the HARQ process corresponding to the SPS;

Information about the physical uplink control channel PUCCH resource used for HARQ transmission corresponding to the SPS;

Modulation and coding strategy MCS information corresponding to SPS;

HARQ codebook information corresponding to SPS;

SPS configuration index information;

RNTI information corresponding to the SPS.

The embodiment of the present invention also provides a network device, including: a processor and a transceiver;

The processor is configured to send a paging message to a terminal in an RRC inactive state through the transceiver; the paging message carries downlink small packet transmission SDT instruction information;

Wherein, the instruction information includes at least one of the following:

The first information indicating the semi-persistent scheduling SPS;

Second information indicating that the usage level of the SPS is higher than that of other resources;

Third information indicating the use of uplink SDT resources;

Fourth information indicating that the usage level of the uplink SDT resources is higher than that of other resources.

Optionally, the processor is also used for:

The downlink SDT is sent by the transceiver according to the indication information.

Optionally, the sending of the downlink SDT according to the indication information includes at least one of the following:

When the indication information includes the first information and/or the second information, and satisfies the condition of sending downlink SDT based on SPS, according to the first identification information corresponding to the first information and/or the second information, Sending downlink SDT; the first identification information includes: cell radio network temporary identification RNTI information, and/or RNTI information in SPS configuration information;

When the indication information includes the third information and/or the fourth information, and the uplink SDT is completed, the uplink SDT resource is used to send the downlink SDT.

Optionally, the condition for sending the downlink SDT based on the SPS includes at least one of the following:

The signal quality of the synchronization signal block SSB is higher than the threshold value;

There are configured SPS resources on the SSB.

Optionally, the sending the downlink SDT according to the first identification information corresponding to the first information and/or the second information includes:

performing downlink SDT transmission on the first SPS resource according to the first identification information corresponding to the first information and/or the second information;

Wherein, the first SPS resource is the SPS resource indicated by the SPS configuration information corresponding to the first identification information;

The SPS configuration information includes at least one of the following:

SPS configuration information allocated to the terminal before sending the RRC release message;

The SPS configuration information carried in the RRC release message.

Optionally, the SPS configuration information includes at least one of the following:

SPS cycle information;

The number information of the hybrid automatic repeat request HARQ process corresponding to the SPS;

RNTI information corresponding to the configuration and scheduling of the SPS;

Offset information of the HARQ process corresponding to the SPS;

Information about the physical uplink control channel PUCCH resource used for HARQ transmission corresponding to the SPS;

Modulation and coding strategy MCS information corresponding to SPS;

HARQ codebook information corresponding to SPS;

SPS configuration index information;

RNTI information corresponding to the SPS.

An embodiment of the present invention also provides a terminal, including a memory, a processor, and a computer program stored on the memory and operable on the processor; when the processor executes the program, the above terminal-side data transfer method.

An embodiment of the present invention also provides a network device, including a memory, a processor, and a computer program stored on the memory and operable on the processor; when the processor executes the program, the above-mentioned network device is realized side data transfer method.

An embodiment of the present invention also provides a computer-readable storage medium, on which a computer program is stored, and when the program is executed by a processor, the steps in the above data transmission method on the terminal side are implemented; or,

When the program is executed by the processor, the steps in the above data transmission method on the network device side are implemented.

The beneficial effects of above-mentioned technical scheme of the present invention are as follows:

In the above solution, the data transmission method receives the paging message sent by the network device when the radio resource control RRC is inactive; the paging message carries the instruction information of downlink small packet transmission SDT; according to the The indication information is used to receive the downlink SDT; wherein, the indication information includes at least one of the following: first information indicating the semi-persistent scheduling SPS; second information indicating that the use level of SPS is higher than that of other resources; indicating the use of The third information of the uplink SDT resource; the fourth information indicating that the usage level of the uplink SDT resource is higher than that of other resources; it can support the terminal to receive the downlink SDT in the RRC inactive state, avoiding the need to be triggered by the network side. After the RRC inactive state is switched to the RRC connected state, the downlink SDT is received, thereby reducing the transmission delay; in addition, it can also prevent the terminal from switching from the RRC inactive state to the RRC connected state for a small amount of data transmission, and then switching back again RRC is inactive, thereby avoiding the waste of signaling overhead and transmission resource overhead; it solves the problem of large transmission delay, waste of signaling overhead and transmission resource overhead in the downlink data transmission scheme for RRC inactive terminals in the prior art question.

Description of drawings

FIG. 1 is a first schematic flow diagram of a data transmission method according to an embodiment of the present invention;

FIG. 2 is a second schematic flow diagram of a data transmission method according to an embodiment of the present invention;

FIG. 3 is a first structural schematic diagram of a data transmission device according to an embodiment of the present invention;

FIG. 4 is a second structural diagram of a data transmission device according to an embodiment of the present invention;

FIG. 5 is a schematic structural diagram of a terminal according to an embodiment of the present invention;

FIG. 6 is a schematic structural diagram of a network device according to an embodiment of the present invention.

Detailed ways

In order to make the technical problems, technical solutions and advantages to be solved by the present invention clearer, the following will describe in detail with reference to the drawings and specific embodiments.

Aiming at the problems of large transmission delay, waste of signaling overhead and transmission resource overhead in the downlink data transmission scheme for RRC inactive terminals in the existing technology, the present invention provides a data transmission method, which is applied to the terminal, as shown in Figure 1 ,include:

Step 11: In the case of radio resource control RRC inactive state, receive the paging message sent by the network equipment; the paging message carries the instruction information of downlink small packet transmission SDT;

Step 12: Receive downlink SDT according to the indication information; wherein, the indication information includes at least one of the following: first information indicating semi-persistent scheduling SPS; second information indicating that the usage level of SPS is higher than that of other resource usage levels Two pieces of information: the third piece of information indicating the use of uplink SDT resources; the fourth piece of information indicating that the use level of uplink SDT resources is higher than that of other resources.

Wherein, the uplink SDT resources may include: SDT resources based on random access and/or SDT resources based on configuration authorization, which are not limited here.

The data transmission method provided by the embodiment of the present invention receives a paging message sent by a network device when the radio resource control RRC is in an inactive state; the paging message carries downlink small packet transmission SDT instruction information; According to the indication information, the downlink SDT is received; wherein the indication information includes at least one of the following: first information indicating the semi-persistent scheduling SPS; second information indicating that the usage level of the SPS is higher than that of other resource usage levels; The third information indicating the use of uplink SDT resources; the fourth information indicating that the usage level of uplink SDT resources is higher than that of other resources; it can support the terminal to receive downlink SDT in the RRC inactive state, avoiding the need to be triggered by the network side The terminal switches from the RRC inactive state to the RRC connected state and then receives the downlink SDT, thereby reducing the transmission delay; in addition, it can also prevent the terminal from switching from the RRC inactive state to the RRC connected state for a small amount of data transmission, and then switching again. Back to the RRC inactive state, thereby avoiding the waste of signaling overhead and transmission resource overhead; it solves the problem of large transmission delay, waste of signaling overhead and transmission resource overhead in the downlink data transmission scheme for RRCinactive terminals in the prior art The problem.

In the embodiment of the present invention, the reception of the downlink SDT according to the indication information includes at least one of the following: (1) the indication information includes the first information and/or the second information, and satisfies the condition based on In the case of the condition that the SPS receives the downlink SDT, the downlink SDT is received according to the first identification information corresponding to the first information and/or the second information; the first identification information includes: cell radio network temporary identification RNTI information , and/or the RNTI information in the SPS configuration information; (2) when the indication information includes the third information and/or the fourth information, and the uplink SDT is completed, use uplink SDT resources to perform downlink SDT take over.

The SPS configuration information may include: at least one SPS configuration value, which is not limited here.

In the embodiment of the present invention, the condition for receiving downlink SDT based on SPS includes at least one of the following: the signal quality of the synchronization signal block SSB is higher than a threshold value; SPS resources are configured on the SSB.

Wherein, the receiving the downlink SDT according to the first identification information corresponding to the first information and/or the second information includes: according to the first identification information corresponding to the first information and/or the second information, The downlink SDT is received on the first SPS resource; wherein, the first SPS resource is the SPS resource indicated by the SPS configuration information corresponding to the first identification information; the SPS configuration information includes at least one of the following: receiving SPS configuration information allocated before the RRC release message; SPS configuration information carried in the RRC release message.

Wherein "the SPS configuration information includes: the SPS configuration information allocated before receiving the RRC release message" may be understood as: the terminal does not release the SPS configuration information after receiving the RRC release message; but it is not limited thereto.

In the embodiment of the present invention, the SPS configuration information includes at least one of the following: SPS period information; the number information of the hybrid automatic repeat request HARQ process corresponding to the SPS; the RNTI information (ie, CS-RNTI) corresponding to the configuration and scheduling of the SPS; The offset information of the HARQ process corresponding to the SPS; the information of the physical uplink control channel PUCCH resource used for HARQ transmission corresponding to the SPS; the modulation and coding strategy MCS information corresponding to the SPS; the HARQ codebook information corresponding to the SPS; the SPS configuration index information; RNTI information corresponding to the SPS.

The embodiment of the present invention also provides a data transmission method, which is applied to network equipment, as shown in Figure 2, including:

Step 21: Send a paging message to a terminal in an RRC inactive state; the paging message carries the indication information of downlink small packet transmission SDT; wherein, the indication information includes at least one of the following: indicating semi-static The first information for scheduling SPS; the second information indicating that the usage level of SPS is higher than that of other resources; the third information indicating the use of uplink SDT resources; the fourth information indicating that the usage level of uplink SDT resources is higher than that of other resources .

Wherein, the uplink SDT resources may include: SDT resources based on random access and/or SDT resources based on configuration authorization, which are not limited here.

The data transmission method provided by the embodiment of the present invention sends a paging message to a terminal in an RRC inactive state; the paging message carries downlink small packet transmission SDT instruction information; wherein, the instruction information Including at least one of the following: first information indicating semi-persistent scheduling SPS; second information indicating that the usage level of SPS is higher than that of other resources; third information indicating the use of uplink SDT resources; indicating that the usage level of uplink SDT resources is high The fourth information of other resource usage levels; it can support the terminal to receive downlink SDT in the RRC inactive state, avoiding the need for the network to trigger the terminal to switch from the RRC inactive state to the RRC connected state before receiving the downlink SDT , so as to reduce the transmission delay; in addition, it can also prevent the terminal from switching from the RRC inactive state to the RRC connected state for a small amount of data transmission, and then switch back to the RRC inactive state again, thereby avoiding the waste of signaling overhead and transmission resource overhead ; It solves the problem of large transmission delay, waste of signaling overhead and transmission resource overhead in the downlink data transmission scheme for RRC inactive terminals in the prior art.

Further, the data transmission method further includes: sending downlink SDT according to the indication information.

In the embodiment of the present invention, the sending of the downlink SDT according to the indication information includes at least one of the following: (1) the indication information includes the first information and/or the second information, and satisfies the condition based on In the case of the condition for the SPS to send the downlink SDT, the downlink SDT is sent according to the first identification information corresponding to the first information and/or the second information; the first identification information includes: cell radio network temporary identification RNTI information , and/or the RNTI information in the SPS configuration information; (2) when the indication information includes the third information and/or the fourth information, and the uplink SDT is completed, use uplink SDT resources to perform downlink SDT send.

The SPS configuration information may include: at least one SPS configuration value, which is not limited here.

In the embodiment of the present invention, the condition for sending downlink SDT based on SPS includes at least one of the following: the signal quality of the synchronization signal block SSB is higher than a threshold value; SPS resources are configured on the SSB.

Wherein, the sending the downlink SDT according to the first identification information corresponding to the first information and/or the second information includes: according to the first identification information corresponding to the first information and/or the second information, The downlink SDT is sent on the first SPS resource; wherein, the first SPS resource is the SPS resource indicated by the SPS configuration information corresponding to the first identification information; the SPS configuration information includes at least one of the following: sending The SPS configuration information allocated to the terminal before the RRC release message; the SPS configuration information carried in the RRC release message.

Wherein "the SPS configuration information includes: the SPS configuration information allocated before receiving the RRC release message" may be understood as: the terminal does not release the SPS configuration information after receiving the RRC release message; but it is not limited thereto.

In the embodiment of the present invention, the SPS configuration information includes at least one of the following: SPS period information; the number information of the hybrid automatic repeat request HARQ process corresponding to the SPS; the RNTI information of the configuration scheduling corresponding to the SPS; the HARQ process corresponding to the SPS Offset information; physical uplink control channel PUCCH resource information for HARQ transmission corresponding to SPS; modulation and coding strategy MCS information corresponding to SPS; HARQ codebook information corresponding to SPS; SPS configuration index information; RNTI information corresponding to SPS.

It is noted here that the content on the terminal side and the network device side can refer to each other, and will not be repeated here.

The data transmission method provided by the embodiment of the present invention is illustrated below with an example.

In view of the above technical problems, the embodiment of the present invention provides a data transmission method, which can be implemented as a downlink SDT scheme, which involves the following parts:

part one;

A: The terminal in RRC inactive obtains the instruction information (corresponding to the above instruction information) carried in the paging (paging) information; the downlink packet transmission can include downlink data transmission, downlink signaling transmission and At least one item in downlink information transmission.

Specifically, the instruction information (of) downlink small packet transmission may include: (use) SPS instruction information (corresponding to the above first information), or (indicating) preferential use of SPS instruction information (corresponding to the above second information); or , using indication information (corresponding to the above third information) for uplink small packet transmission (resources), or (indicating) preferentially using uplink small packet transmission (resource) indication information (corresponding to the above fourth information);

The above-mentioned downlink small packet transmission (of) indication information may specifically be indicated with 1 bit in the paging message, and the indication information may indicate whether downlink small packet transmission is performed.

B: In the case where the paging information carries SPS indication information or SPS priority indication information, when the terminal meets the conditions for receiving downlink SDT based on SPS, the terminal can use the RNTI information in the SPS configuration (information) to monitor the downlink SDT (i.e. receive downlink SDT); if the RNTI information is not configured in the SPS, the C (cell)-RNTI can be used to monitor the downlink SDT; information, and if the condition of receiving the downlink SDT based on the SPS is met, the downlink SDT is received according to the first identification information corresponding to the first information and/or the second information.

C: In the case where the paging message carries indication information for using uplink small packet transmission (resource) or preferentially using uplink small packet transmission (resource) indication information, the terminal can use or preferentially use the uplink small packet transmission resource to send uplink first , to achieve downlink SDT reception (corresponding to the above-mentioned situation where the indication information includes the third information and/or fourth information and the uplink SDT is completed, using uplink SDT resources to perform downlink SDT reception); the uplink packet The transmission resources may include at least one of RA-SDT resources (SDT resources based on random access) and CG-SDT resources (SDT resources based on configuration authorization); it is not limited here.

D: The above conditions for receiving downlink SDT based on SPS may include at least one of the following:

The signal quality of SSB (Synchronization Signal Block) is higher than the threshold value;

There are SPS resources configured on the above SSB.

part two;

The terminal may use semi-persistent scheduling (Semi-Persistent Scheduling, SPS) resources (corresponding to the first SPS resource) to receive the downlink SDT. Wherein, the configuration of the SPS resource may be physical downlink control channel PDCCH (Physical Downlink Control Channel) allocation (corresponding to item A below), or RRC signaling configuration (corresponding to item B below), which is not limited here. specific:

A: For a terminal that supports RRC inactive downlink small packet transmission, after receiving the RRC release message, the terminal does not release the SPS configuration information (corresponding to the above SPS configuration information allocated before receiving the RRC release message);

Specifically, when the terminal is in the RRC connection state, the network may configure SPS resources (included in SPS configuration information) for downlink packet transmission through the PDCCH. The SPS resource is not released when the terminal enters the RRC inactive state.

B: The RRC release (release) message may include SPS configuration information (corresponding to the SPS configuration information carried in the above RRC release message). The SPS resources used for downlink packet transmission are configured in the RRC release.

Wherein, the SPS configuration information may include: the SPS period, the number of HARQ processes (processes), CS (Configured Scheduling, configuration scheduling)-RNTI, the offset (offset) of the HARQ process, etc.; it may also include: the HARQ transmission corresponding to the SPS PUCCH resource, MCS table (modulation and coding strategy table), HARQ codebook (codebook), SPSconfig index (SPS configuration index), RNTI information corresponding to SPS, etc.; it is not limited here.

In addition, the terminal (in) RRC connected () may enter the RRC inactive state after receiving the RRC release message sent by the network.

C: Items A and B both support configuring multiple SPS configurations (corresponding to the SPS configuration information including: at least one SPS configuration value).

From the above, the solution provided by the embodiment of the present invention involves: carrying the indication information about the downlink SDT in the paging information, so as to realize the downlink SDT of the RRC inactive terminal.

In summary, this solution can be used to solve the problem of RRC inactive terminals when small downlink data packets arrive by introducing indication information in the paging message and SPS configuration in the RRC release message; it can effectively reduce (in RRC inactive The data transmission delay, signaling overhead, and transmission resource overhead of the terminal.

The relevant content involved in the embodiment of the present invention is introduced below.

Regarding small packet data transmission SDT (Small data transmission, that is, small packet transmission), it can specifically include two methods: RA (random access)-SDT and CG-SDT; specifically, about CG-SDT (Configured grant based smalldata transmission, configuration The implementation of authorized small packet data transmission) includes: when the network executes RRC (radio resource control) release (release), the RRC release message carries the Configured grant (configuration authorization) configuration information; when the terminal is in the RRC inactive (inactive) state , and there are data packets that meet the requirements of small packet transmission and appropriate transmission resources (such as SSB meeting the threshold condition), the terminal initiates CG-SDT. Regarding "the SSB meets the threshold condition", it may be that the signal quality (value) of the SSB is higher than the threshold value, but it is not limited thereto.

The embodiment of the present invention also provides a data transmission device, which is applied to a terminal, as shown in FIG. 3 , including:

The first receiving module 31 is configured to receive a paging message sent by a network device when the radio resource control RRC is in an inactive state; the paging message carries downlink small packet transmission SDT instruction information;

The second receiving module 32 is configured to receive the downlink SDT according to the indication information;

Wherein, the instruction information includes at least one of the following:

The first information indicating the semi-persistent scheduling SPS;

Second information indicating that the usage level of the SPS is higher than that of other resources;

Third information indicating the use of uplink SDT resources;

Fourth information indicating that the usage level of the uplink SDT resources is higher than that of other resources.

The data transmission device provided by the embodiment of the present invention receives a paging message sent by a network device when the radio resource control RRC is in an inactive state; the paging message carries downlink small packet transmission SDT instruction information; According to the indication information, the downlink SDT is received; wherein the indication information includes at least one of the following: first information indicating the semi-persistent scheduling SPS; second information indicating that the usage level of the SPS is higher than that of other resource usage levels; The third information indicating the use of uplink SDT resources; the fourth information indicating that the usage level of uplink SDT resources is higher than that of other resources; it can support the terminal to receive downlink SDT in the RRC inactive state, avoiding the need to be triggered by the network side The terminal switches from the RRC inactive state to the RRC connected state and then receives the downlink SDT, thereby reducing the transmission delay; in addition, it can also prevent the terminal from switching from the RRC inactive state to the RRC connected state for a small amount of data transmission, and then switching again. Back to the RRC inactive state, thereby avoiding the waste of signaling overhead and transmission resource overhead; it solves the problem of large transmission delay, waste of signaling overhead and transmission resource overhead in the downlink data transmission scheme for RRCinactive terminals in the prior art The problem.

Wherein, the receiving of the downlink SDT according to the indication information includes at least one of the following: (1) the indication information includes the first information and/or the second information, and satisfies receiving the downlink SDT based on SPS In the case of conditions, according to the first information and/or the first identification information corresponding to the second information, receive the downlink SDT; the first identification information includes: cell wireless network temporary identification RNTI information, and/or RNTI information in the SPS configuration information; (2) when the indication information includes the third information and/or fourth information, and the uplink SDT is completed, use the uplink SDT resources to receive the downlink SDT.

In the embodiment of the present invention, the condition for receiving downlink SDT based on SPS includes at least one of the following: the signal quality of the synchronization signal block SSB is higher than a threshold value; SPS resources are configured on the SSB.

Wherein, the receiving the downlink SDT according to the first identification information corresponding to the first information and/or the second information includes: according to the first identification information corresponding to the first information and/or the second information, The downlink SDT is received on the first SPS resource; wherein, the first SPS resource is the SPS resource indicated by the SPS configuration information corresponding to the first identification information; the SPS configuration information includes at least one of the following: receiving SPS configuration information allocated before the RRC release message; SPS configuration information carried in the RRC release message.

In the embodiment of the present invention, the SPS configuration information includes at least one of the following: SPS period information; the number information of the hybrid automatic repeat request HARQ process corresponding to the SPS; the RNTI information of the configuration scheduling corresponding to the SPS; the HARQ process corresponding to the SPS Offset information; physical uplink control channel PUCCH resource information for HARQ transmission corresponding to SPS; modulation and coding strategy MCS information corresponding to SPS; HARQ codebook information corresponding to SPS; SPS configuration index information; RNTI information corresponding to SPS.

Wherein, the implementation embodiments of the above data transmission method at the terminal side are all applicable to the embodiments of the data transmission device, and can also achieve the same technical effect.

The embodiment of the present invention also provides a data transmission device, which is applied to network equipment, as shown in Figure 4, including:

The first sending module 41 is configured to send a paging message to a terminal in an RRC inactive state; the paging message carries downlink small packet transmission SDT instruction information;

Wherein, the instruction information includes at least one of the following:

The first information indicating the semi-persistent scheduling SPS;

Second information indicating that the usage level of the SPS is higher than that of other resources;

Third information indicating the use of uplink SDT resources;

Fourth information indicating that the usage level of the uplink SDT resources is higher than that of other resources.

The data transmission device provided in the embodiment of the present invention sends a paging message to a terminal in an RRC inactive state; the paging message carries downlink small packet transmission SDT instruction information; wherein, the instruction information Including at least one of the following: first information indicating semi-persistent scheduling SPS; second information indicating that the usage level of SPS is higher than that of other resources; third information indicating the use of uplink SDT resources; indicating that the usage level of uplink SDT resources is high The fourth information of other resource usage levels; it can support the terminal to receive downlink SDT in the RRC inactive state, avoiding the need for the network to trigger the terminal to switch from the RRC inactive state to the RRC connected state before receiving the downlink SDT , so as to reduce the transmission delay; in addition, it can also prevent the terminal from switching from the RRC inactive state to the RRC connected state for a small amount of data transmission, and then switch back to the RRC inactive state again, thereby avoiding the waste of signaling overhead and transmission resource overhead ; It solves the problem of large transmission delay, waste of signaling overhead and transmission resource overhead in the downlink data transmission scheme for RRC inactive terminals in the prior art.

Further, the data transmission device further includes: a second sending module, configured to send downlink SDT according to the indication information.

Wherein, the sending of the downlink SDT according to the indication information includes at least one of the following: (1) the indication information includes the first information and/or the second information, and satisfies the requirement of sending the downlink SDT based on SPS In the case of conditions, according to the first information and/or the first identification information corresponding to the second information, the downlink SDT is sent; the first identification information includes: cell wireless network temporary identification RNTI information, and/or RNTI information in the SPS configuration information; (2) when the indication information includes the third information and/or fourth information, and the uplink SDT is completed, use the uplink SDT resource to send the downlink SDT.

In the embodiment of the present invention, the condition for sending downlink SDT based on SPS includes at least one of the following: the signal quality of the synchronization signal block SSB is higher than a threshold value; SPS resources are configured on the SSB.

Wherein, the sending the downlink SDT according to the first identification information corresponding to the first information and/or the second information includes: according to the first identification information corresponding to the first information and/or the second information, The downlink SDT is sent on the first SPS resource; wherein, the first SPS resource is the SPS resource indicated by the SPS configuration information corresponding to the first identification information; the SPS configuration information includes at least one of the following: sending The SPS configuration information allocated to the terminal before the RRC release message; the SPS configuration information carried in the RRC release message.

In the embodiment of the present invention, the SPS configuration information includes at least one of the following: SPS period information; the number information of the hybrid automatic repeat request HARQ process corresponding to the SPS; the RNTI information of the configuration scheduling corresponding to the SPS; the HARQ process corresponding to the SPS Offset information; physical uplink control channel PUCCH resource information for HARQ transmission corresponding to SPS; modulation and coding strategy MCS information corresponding to SPS; HARQ codebook information corresponding to SPS; SPS configuration index information; RNTI information corresponding to SPS.

Wherein, the above implementation embodiments of the data transmission method on the network device side are all applicable to the embodiments of the data transmission device, and can also achieve the same technical effect.

The embodiment of the present invention also provides a terminal, as shown in FIG. 5 , including: a processor 51 and a transceiver 52;

The processor 51 is configured to use the transceiver 52 to receive a paging message sent by a network device when the radio resource control RRC is in an inactive state; the paging message carries an indication of downlink small packet transmission SDT information;

Perform downlink SDT reception through the transceiver 52 according to the indication information;

Wherein, the instruction information includes at least one of the following:

The first information indicating the semi-persistent scheduling SPS;

Second information indicating that the usage level of the SPS is higher than that of other resources;

Third information indicating the use of uplink SDT resources;

Fourth information indicating that the usage level of the uplink SDT resources is higher than that of other resources.

According to the embodiment of the present invention, the terminal receives the paging message sent by the network device when it is in the radio resource control RRC inactive state; the paging message carries the instruction information of downlink small packet transmission SDT; according to the The indication information is used to receive the downlink SDT; wherein, the indication information includes at least one of the following: first information indicating the semi-persistent scheduling SPS; second information indicating that the use level of SPS is higher than that of other resources; indicating the use of The third information of the uplink SDT resource; the fourth information indicating that the usage level of the uplink SDT resource is higher than that of other resources; it can support the terminal to receive the downlink SDT in the RRC inactive state, avoiding the need to be triggered by the network side. After the RRC inactive state is switched to the RRC connected state, the downlink SDT is received, thereby reducing the transmission delay; in addition, it can also prevent the terminal from switching from the RRC inactive state to the RRC connected state for a small amount of data transmission, and then switching back again RRC is inactive, thereby avoiding the waste of signaling overhead and transmission resource overhead; it solves the problem of large transmission delay, waste of signaling overhead and transmission resource overhead in the downlink data transmission scheme for RRC inactive terminals in the prior art question.

Wherein, the receiving of the downlink SDT according to the indication information includes at least one of the following: (1) the indication information includes the first information and/or the second information, and satisfies receiving the downlink SDT based on SPS In the case of conditions, according to the first information and/or the first identification information corresponding to the second information, receive the downlink SDT; the first identification information includes: cell wireless network temporary identification RNTI information, and/or RNTI information in the SPS configuration information; (2) when the indication information includes the third information and/or fourth information, and the uplink SDT is completed, use the uplink SDT resources to receive the downlink SDT.

In the embodiment of the present invention, the condition for receiving downlink SDT based on SPS includes at least one of the following: the signal quality of the synchronization signal block SSB is higher than a threshold value; SPS resources are configured on the SSB.

Wherein, the receiving the downlink SDT according to the first identification information corresponding to the first information and/or the second information includes: according to the first identification information corresponding to the first information and/or the second information, The downlink SDT is received on the first SPS resource; wherein, the first SPS resource is the SPS resource indicated by the SPS configuration information corresponding to the first identification information; the SPS configuration information includes at least one of the following: receiving SPS configuration information allocated before the RRC release message; SPS configuration information carried in the RRC release message.

In the embodiment of the present invention, the SPS configuration information includes at least one of the following: SPS period information; the number information of the hybrid automatic repeat request HARQ process corresponding to the SPS; the RNTI information of the configuration scheduling corresponding to the SPS; the HARQ process corresponding to the SPS Offset information; physical uplink control channel PUCCH resource information for HARQ transmission corresponding to SPS; modulation and coding strategy MCS information corresponding to SPS; HARQ codebook information corresponding to SPS; SPS configuration index information; RNTI information corresponding to SPS.

Wherein, the implementation embodiments of the above data transmission method on the terminal side are all applicable to the embodiments of the terminal, and can also achieve the same technical effect.

The embodiment of the present invention also provides a network device, as shown in FIG. 6 , including: a processor 61 and a transceiver 62;

The processor 61 is configured to send a paging message to a terminal in an RRC inactive state through the transceiver 62; the paging message carries downlink small packet transmission SDT instruction information;

Wherein, the instruction information includes at least one of the following:

The first information indicating the semi-persistent scheduling SPS;

Second information indicating that the usage level of the SPS is higher than that of other resources;

Third information indicating the use of uplink SDT resources;

Fourth information indicating that the usage level of the uplink SDT resources is higher than that of other resources.

The network device provided in the embodiment of the present invention sends a paging message to a terminal in an RRC inactive state; the paging message carries downlink small packet transmission SDT indication information; wherein the indication information includes At least one of the following: first information indicating semi-persistent scheduling SPS; second information indicating that the usage level of SPS is higher than that of other resources; third information indicating the use of uplink SDT resources; indicating that the usage level of uplink SDT resources is higher than The fourth information of other resource usage levels; it can support the reception of downlink SDT by the terminal in the RRC inactive state, avoiding that the terminal must be triggered by the network side to switch from the RRC inactive state to the RRC connected state before receiving the downlink SDT. Thereby reducing the transmission delay; in addition, it can also prevent the terminal from switching from the RRC inactive state to the RRC connected state for a small amount of data transmission, and then switching back to the RRC inactive state again, thereby avoiding the waste of signaling overhead and transmission resource overhead; It well solves the problems of large transmission time delay, waste of signaling overhead and transmission resource overhead in the downlink data transmission scheme for RRC inactive terminals in the prior art.

Further, the processor is further configured to: send a downlink SDT through the transceiver according to the indication information.

Wherein, the sending of the downlink SDT according to the indication information includes at least one of the following: (1) the indication information includes the first information and/or the second information, and satisfies the requirement of sending the downlink SDT based on SPS In the case of conditions, according to the first information and/or the first identification information corresponding to the second information, the downlink SDT is sent; the first identification information includes: cell wireless network temporary identification RNTI information, and/or RNTI information in the SPS configuration information; (2) when the indication information includes the third information and/or fourth information, and the uplink SDT is completed, use the uplink SDT resource to send the downlink SDT.

In the embodiment of the present invention, the condition for sending downlink SDT based on SPS includes at least one of the following: the signal quality of the synchronization signal block SSB is higher than a threshold value; SPS resources are configured on the SSB.

Wherein, the sending the downlink SDT according to the first identification information corresponding to the first information and/or the second information includes: according to the first identification information corresponding to the first information and/or the second information, The downlink SDT is sent on the first SPS resource; wherein, the first SPS resource is the SPS resource indicated by the SPS configuration information corresponding to the first identification information; the SPS configuration information includes at least one of the following: sending The SPS configuration information allocated to the terminal before the RRC release message; the SPS configuration information carried in the RRC release message.

In the embodiment of the present invention, the SPS configuration information includes at least one of the following: SPS period information; the number information of the hybrid automatic repeat request HARQ process corresponding to the SPS; the RNTI information of the configuration scheduling corresponding to the SPS; the HARQ process corresponding to the SPS Offset information; physical uplink control channel PUCCH resource information for HARQ transmission corresponding to SPS; modulation and coding strategy MCS information corresponding to SPS; HARQ codebook information corresponding to SPS; SPS configuration index information; RNTI information corresponding to SPS.

Wherein, the implementation embodiments of the above data transmission method on the network device side are all applicable to the embodiments of the network device, and can also achieve the same technical effect.

An embodiment of the present invention also provides a terminal, including a memory, a processor, and a computer program stored on the memory and operable on the processor; when the processor executes the program, the above terminal-side data transfer method.

Wherein, the implementation embodiments of the above data transmission method on the terminal side are all applicable to the embodiments of the terminal, and can also achieve the same technical effect.

An embodiment of the present invention also provides a network device, including a memory, a processor, and a computer program stored on the memory and operable on the processor; when the processor executes the program, the above-mentioned network device is realized side data transfer method.

Wherein, the implementation embodiments of the above data transmission method on the network device side are all applicable to the embodiments of the network device, and can also achieve the same technical effect.

An embodiment of the present invention also provides a computer-readable storage medium, on which a computer program is stored, and when the program is executed by a processor, the steps in the above data transmission method on the terminal side are implemented; or, when the program is executed by the processor, The steps in the above data transmission method on the network device side are implemented.

Wherein, the above implementation embodiments of the data transmission method on the terminal side or the network device side are all applicable to the embodiment of the computer-readable storage medium, and can also achieve the same technical effect.

It should be noted that many functional components described in this specification are called modules, in order to more particularly emphasize the independence of their implementation.

In the embodiments of the present invention, the modules may be implemented by software so as to be executed by various types of processors. An identified module of executable code may, by way of example, comprise one or more physical or logical blocks of computer instructions which may, for example, be structured as an object, procedure, or function. Notwithstanding, the executable code of an identified module need not be physically located together, but may include distinct instructions stored in different bits which, when logically combined, constitute the module and implement the specified Purpose.

Indeed, a module of executable code may be a single instruction, or many instructions, and may even be distributed over several different code segments, among different programs and across multiple memory devices. Likewise, operational data may be identified within modules, and may be implemented in any suitable form and organized within any suitable type of data structure. The operational data may be collected as a single data set, or may be distributed in different locations (including on different storage devices), and may exist, at least in part, only as electronic signals on a system or network.

When the module can be realized by software, considering the level of the existing hardware technology, the module that can be realized by software, regardless of the cost, those skilled in the art can build the corresponding hardware circuit to realize the corresponding function. The hardware circuit includes conventional very large scale integration (VLSI) circuits or gate arrays as well as existing semiconductors such as logic chips, transistors, or other discrete components. A module may also be implemented in programmable hardware devices such as field programmable gate arrays, programmable array logic, programmable logic devices, and the like.

What has been described above is a preferred embodiment of the present invention. It should be pointed out that for those skilled in the art, some improvements and modifications can also be made without departing from the principle of the present invention. These improvements and modifications should also be considered as Be the protection scope of the present invention.

Claims (18)

1. A data transmission method applied to a terminal, comprising:

receiving a paging message sent by the network equipment under the condition of Radio Resource Control (RRC) non-activation state; the paging message carries indication information of SDT (downlink packet transfer);

receiving downlink SDT according to the indication information;

wherein the indication information includes at least one of:

first information indicating a semi-persistent scheduling, SPS;

second information indicating that the SPS usage level is higher than other resource usage levels;

third information indicating use of upstream SDT resources;

fourth information indicating that the usage level of the upstream SDT resource is higher than that of the other resources.

2. The data transmission method according to claim 1, wherein the receiving downlink SDT according to the indication information includes at least one of:

when the indication information comprises the first information and/or the second information and meets the condition of receiving the downlink SDT based on SPS, receiving the downlink SDT according to first identification information corresponding to the first information and/or the second information; the first identification information includes: the cell Radio Network Temporary Identity (RNTI) information and/or RNTI information in the SPS configuration information;

And when the indication information comprises the third information and/or the fourth information and the uplink SDT is completed, using uplink SDT resources to receive downlink SDT.

3. The data transmission method according to claim 2, wherein the condition for receiving the downstream SDT based on the SPS includes at least one of:

the signal quality of the synchronization signal block SSB is higher than a threshold value;

there are SPS resources configured on SSB.

4. The method of claim 2, wherein the receiving downlink SDT according to the first identification information corresponding to the first information and/or the second information includes:

according to the first identification information corresponding to the first information and/or the second information, downlink SDT is received on the first SPS resource;

the first SPS resource is an SPS resource indicated by SPS configuration information corresponding to the first identification information;

the SPS configuration information includes at least one of:

SPS configuration information allocated before receiving the RRC release message;

SPS configuration information carried in RRC release message.

5. The data transmission method according to claim 2 or 4, wherein the SPS configuration information includes at least one of:

SPS period information;

the number information of hybrid automatic repeat request (HARQ) processes corresponding to the SPS;

RNTI information of configuration scheduling corresponding to SPS;

offset information of the HARQ process corresponding to SPS;

information of Physical Uplink Control Channel (PUCCH) resources corresponding to SPS and used for HARQ transmission;

modulation and Coding Strategy (MCS) information corresponding to SPS;

HARQ codebook information corresponding to SPS;

SPS configuration index information;

RNTI information corresponding to SPS.

6. A data transmission method applied to a network device, comprising:

sending a paging message to a terminal in a Radio Resource Control (RRC) inactive state; the paging message carries indication information of SDT (downlink packet transfer);

wherein the indication information includes at least one of:

first information indicating a semi-persistent scheduling, SPS;

second information indicating that the SPS usage level is higher than other resource usage levels;

third information indicating use of upstream SDT resources;

fourth information indicating that the usage level of the upstream SDT resource is higher than that of the other resources.

7. The data transmission method according to claim 6, further comprising:

and sending downlink SDT according to the indication information.

8. The data transmission method according to claim 7, wherein the sending downlink SDT according to the indication information includes at least one of:

when the indication information comprises the first information and/or the second information and meets the condition of sending the downlink SDT based on SPS, sending the downlink SDT according to first identification information corresponding to the first information and/or the second information; the first identification information includes: the cell Radio Network Temporary Identity (RNTI) information and/or RNTI information in the SPS configuration information;

and when the indication information comprises the third information and/or the fourth information and the uplink SDT is completed, using uplink SDT resources to send downlink SDT.

9. The data transmission method according to claim 8, wherein the condition for transmitting the downstream SDT based on the SPS includes at least one of:

the signal quality of the synchronization signal block SSB is higher than a threshold value;

there are SPS resources configured on SSB.

10. The method of claim 8, wherein the sending the downstream SDT according to the first identification information corresponding to the first information and/or the second information includes:

According to the first identification information corresponding to the first information and/or the second information, downlink SDT (data transfer rate) is sent on a first SPS (SPS) resource;

the first SPS resource is an SPS resource indicated by SPS configuration information corresponding to the first identification information;

the SPS configuration information includes at least one of:

SPS configuration information distributed to the terminal before sending the RRC release message;

SPS configuration information carried in RRC release message.

11. The data transmission method according to claim 8 or 10, wherein the SPS configuration information includes at least one of:

SPS period information;

the number information of hybrid automatic repeat request (HARQ) processes corresponding to the SPS;

RNTI information of configuration scheduling corresponding to SPS;

offset information of the HARQ process corresponding to SPS;

information of Physical Uplink Control Channel (PUCCH) resources corresponding to SPS and used for HARQ transmission;

modulation and Coding Strategy (MCS) information corresponding to SPS;

HARQ codebook information corresponding to SPS;

SPS configuration index information;

RNTI information corresponding to SPS.

12. A data transmission device applied to a terminal, comprising:

a first receiving module, configured to receive a paging message sent by a network device when the radio resource control RRC is inactive; the paging message carries indication information of SDT (downlink packet transfer);

The second receiving module is used for receiving the downlink SDT according to the indication information;

wherein the indication information includes at least one of:

first information indicating a semi-persistent scheduling, SPS;

second information indicating that the SPS usage level is higher than other resource usage levels;

third information indicating use of upstream SDT resources;

fourth information indicating that the usage level of the upstream SDT resource is higher than that of the other resources.

13. A data transmission apparatus for use in a network device, comprising:

a first sending module, configured to send a paging message to a terminal in a radio resource control RRC inactive state; the paging message carries indication information of SDT (downlink packet transfer);

wherein the indication information includes at least one of:

first information indicating a semi-persistent scheduling, SPS;

second information indicating that the SPS usage level is higher than other resource usage levels;

third information indicating use of upstream SDT resources;

fourth information indicating that the usage level of the upstream SDT resource is higher than that of the other resources.

14. A terminal, comprising: a processor and a transceiver;

the processor is configured to receive, by using the transceiver, a paging message sent by a network device when the radio resource control RRC is inactive; the paging message carries indication information of SDT (downlink packet transfer);

Receiving downlink SDT according to the indication information through the transceiver;

wherein the indication information includes at least one of:

first information indicating a semi-persistent scheduling, SPS;

second information indicating that the SPS usage level is higher than other resource usage levels;

third information indicating use of upstream SDT resources;

fourth information indicating that the usage level of the upstream SDT resource is higher than that of the other resources.

15. A network device, comprising: a processor and a transceiver;

the processor is configured to send a paging message to a terminal in a radio resource control RRC inactive state through the transceiver; the paging message carries indication information of SDT (downlink packet transfer);

wherein the indication information includes at least one of:

first information indicating a semi-persistent scheduling, SPS;

second information indicating that the SPS usage level is higher than other resource usage levels;

third information indicating use of upstream SDT resources;

fourth information indicating that the usage level of the upstream SDT resource is higher than that of the other resources.

16. A terminal comprising a memory, a processor and a computer program stored on the memory and executable on the processor; the data transmission method according to any one of claims 1 to 5 is realized when the processor executes the program.

17. A network device comprising a memory, a processor, and a computer program stored on the memory and executable on the processor; a data transmission method according to any one of claims 6 to 11, characterized in that the processor implements the data transmission method when executing the program.

18. A computer-readable storage medium, on which a computer program is stored, characterized in that the program, when being executed by a processor, implements the steps in the data transmission method according to any one of claims 1 to 5; or,

the program, when executed by a processor, implements the steps of the data transmission method as claimed in any one of claims 6 to 11.