WO2022006915A1

WO2022006915A1 - Uplink data transmission method and apparatus, terminal, and storage medium

Info

Publication number: WO2022006915A1
Application number: PCT/CN2020/101490
Authority: WO
Inventors: 林雪; 石聪; 李海涛; 尤心
Original assignee: Oppo广东移动通信有限公司
Priority date: 2020-07-10
Filing date: 2020-07-10
Publication date: 2022-01-13
Also published as: CN115669149A

Abstract

Disclosed are an uplink data transmission method and apparatus, a terminal, and a storage medium, which belong to the technical field of the Internet of things. The method comprises: when a terminal is in an RRC inactive state, if an inactive transmission condition is satisfied, firstly filling, by means of an LCP, a MAC PDU corresponding to a UL grant with data from a logical channel of triggerable IDT, thus providing a feasible solution of using, in an IDT flow, a UL grant to realize LCP processing so as to build a MAC PDU, such that uplink data transmission is performed in an inactive state, and there is no need to resume or establish an RRC connection every time data needs to be transmitted, thereby reducing power consumption and saving on signaling resources.

Description

Uplink data transmission method, device, terminal and storage medium

technical field

The present application relates to the field of wireless communication technologies, and in particular, to an uplink data transmission method, device, terminal, and storage medium.

Background technique

In the fifth-generation mobile communication (5th-Generation, 5G) network, based on the consideration of energy saving, a radio resource control (Radio Resource Control, RRC) inactive state (RRC_INACTIVE) is introduced.

For a terminal in the RRC_INACTIVE state, the radio bearer and all radio resources will be released, but the terminal side and the base station side retain the access context of the terminal to quickly restore the RRC connection, and the network side usually keeps the terminal with infrequent data transmission in the RRC_INACTIVE state , when data arrives, the terminal restores the RRC connection, and releases the RRC connection after the data transmission is completed to return to the RRC_INACTIVE state.

In the above solution, even when the amount of data to be transmitted is small, the terminal needs to restore the RRC connection from the RRC_INACTIVE state, and then return to the RRC_INACTIVE state after data transmission, which requires more power consumption and signaling resources.

SUMMARY OF THE INVENTION

Embodiments of the present application provide an uplink data transmission method, device, terminal, and storage medium. The technical solution is as follows:

On the one hand, an embodiment of the present application provides an uplink data transmission method, the method includes:

When the terminal is in the radio resource control RRC inactive state and satisfies the inactive data transmission IDT condition, determine the first uplink scheduling grant UL grant according to the target IDT resource;

According to the first UL grant, logical channel priority processing is performed on the first data to multiplex the first data into the first medium access control protocol data unit MAC PDU; the first data is of the terminal Among the data to be sent, the data comes from a first-type logical channel; the first-type logical channel is a logical channel that can trigger IDT;

Based on the first MAC PDU, uplink data transmission is performed to the network side device.

On the other hand, an embodiment of the present application provides an uplink data transmission apparatus, and the apparatus includes:

a first uplink grant determination module, configured to determine the first uplink scheduling grant UL grant according to the target IDT resource when the terminal is in a radio resource control RRC inactive state and satisfies the inactive data transmission IDT condition;

a first data processing module, configured to perform logical channel priority processing on the first data according to the first UL grant, so as to multiplex the first data into a first medium access control protocol data unit MAC PDU; the The first data is the data to be sent by the terminal, from the first type of logical channel; the first type of logical channel is a logical channel that can trigger IDT;

The first uplink data transmission module is configured to perform uplink data transmission to the network side device based on the first MAC PDU.

In another aspect, an embodiment of the present application provides a terminal, the terminal includes a processor, a memory, and a transceiver, the memory stores a computer program, and the computer program is used to be executed by the processor to implement the above-mentioned Upstream data transmission method.

In another aspect, an embodiment of the present application further provides a computer-readable storage medium, where a computer program is stored in the storage medium, and the computer program is loaded and executed by a processor to implement the above uplink data transmission method.

In another aspect, a computer program product or computer program is provided, the computer program product or computer program comprising computer instructions stored in a computer-readable storage medium. The processor of the terminal reads the computer instruction from the computer-readable storage medium, and the processor executes the computer instruction, so that the terminal executes the above-mentioned uplink data transmission method.

The technical solutions provided in the embodiments of the present application can bring the following beneficial effects:

When the terminal is in the RRC inactive state, if the inactive transmission conditions are met, the data from the logical channel that can trigger the IDT is first filled into the MAC PDU corresponding to the UL grant through the LCP method, thereby providing an IDT process. It is a feasible solution to use UL grant to implement LCP processing to form a MAC PDU, so as to realize uplink data transmission in the inactive state, and it is not necessary to restore or establish an RRC connection every time there is data to be transmitted, saving power consumption and information. order resources.

Description of drawings

In order to illustrate the technical solutions in the embodiments of the present application more clearly, the following briefly introduces the drawings that are used in the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, other drawings can also be obtained from these drawings without creative effort.

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

2 is a flowchart of an uplink data transmission method provided by an embodiment of the present application;

3 is a schematic diagram of uplink data transmission of the terminal involved in the embodiment shown in FIG. 2 in an inactive state;

4 is a flowchart of an uplink data transmission method provided by an embodiment of the present application;

5 is a schematic diagram of an IDT transmission process provided by an embodiment of the present application;

FIG. 6 is a schematic diagram of an uplink transmission involved in the embodiment shown in FIG. 5;

Fig. 7 is another schematic diagram of uplink transmission involved in the embodiment shown in Fig. 5;

8 is a block diagram of an apparatus for uplink data transmission provided by an embodiment of the present application;

FIG. 9 is a schematic structural diagram of a computer device provided by an embodiment of the present application.

detailed description

In order to make the objectives, technical solutions and advantages of the present application clearer, the embodiments of the present application will be further described in detail below with reference to the accompanying drawings.

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

Please refer to FIG. 1 , which shows a schematic diagram of a network architecture of a communication system provided by an embodiment of the present application. The network architecture may include: terminal 10 and base station 20 .

The number of terminals 10 is usually multiple, and one or more terminals 10 may be distributed in a cell managed by each base station 20 . The terminal 10 may include various handheld devices with wireless communication functions, vehicle-mounted devices, wearable devices, computing devices or other processing devices connected to the wireless modem, as well as various forms of user equipment (User Equipment, UE), mobile stations ( Mobile Station, MS), terminal device, etc. For convenience of description, in the embodiments of the present application, the devices mentioned above are collectively referred to as terminals.

The base station 20 is a device deployed in the access network to provide the terminal 20 with a wireless communication function. The base station 20 may include various forms of macro base stations, micro base stations, relay stations, access points, and the like. In systems using different radio access technologies, the names of devices with base station functions may be different, for example, in 5G New Radio (NR) systems, they are called gNodeBs or gNBs. As communication technology evolves, the name "base station" may change. For convenience of description, in the embodiments of the present application, the above-mentioned apparatuses for providing wireless communication functions for the terminal 20 are collectively referred to as base stations.

Optionally, what is not shown in FIG. 1 is that the above-mentioned network architecture also 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, session management function (Session management function, SMF) or 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 those skilled in the art can understand its meaning. The technical solutions described in the embodiments of the present disclosure may be applicable to the 5G NR system, and may also be applicable to the subsequent evolution system of the 5G NR system.

For ease of understanding, the related terms and concepts involved in this application are introduced below:

1) Logical Channel Priority (LCP, Logical Channel Prioritization)

Similar to the Long Term Evolution (LTE) system, in the NR system, the network allocates uplink transmission resources based on each terminal (per-UE) rather than each token (per-bearer), and the terminal decides The data of which radio bearers can be put into the allocated uplink transmission resources for transmission.

Based on the uplink transmission resources configured by the network, the terminal needs to determine the transmission data volume of each logical channel in the initial transmission (Media Access Control Protocol Data Unit, MAC PDU). Element, CE) to allocate resources. In order to realize the multiplexing of uplink logical channels, it is necessary to assign a priority to each uplink logical channel. For a MAC PDU of a given size, when multiple uplink logical channels have data transmission requirements at the same time, the resources of the MAC PDU are allocated in sequence according to the logical channel priority corresponding to each uplink logical channel in descending order. At the same time, in order to take into account the fairness between different logical channels, the concept of Prioritized Bit Rate (PBR) is introduced, that is, when the terminal performs logical channel multiplexing, the minimum data rate requirement of each logical channel needs to be guaranteed first. This avoids the situation that other uplink logical channels with low priority of the terminal are "starved to death" because the uplink logical channel with high priority always occupies the uplink resources allocated to the terminal by the network.

In order to realize the multiplexing of uplink logical channels, the network side configures the following parameters for each uplink logical channel through the RRC connection:

A) Logical channel priority priority: the smaller the value of the priority, the higher the corresponding priority;

B) PBR: priority bit rate, indicating the minimum rate that the logical channel needs to guarantee;

C) BSD (bucket Size Duration): This parameter determines the depth of the token bucket.

The MAC layer of the terminal uses the token bucket mechanism to implement uplink logical channel multiplexing. For example, the terminal maintains a variable Bj for each uplink logical channel j, which indicates the number of tokens currently available in the token bucket. The method is as follows:

Step 1, when the terminal establishes the logical channel j, initializes Bj to 0;

Step 2, before each LCP process, the terminal increases Bj by PBR*T, where T is the time interval from the moment when Bj was increased last time to the current moment;

Step 3: If the Bj updated according to Step 2 is greater than the maximum capacity of the token bucket (ie PBR*BSD), set Bj to the maximum capacity of the token bucket.

When the terminal receives an uplink scheduling grant (UL grant) indicating a new transmission, the terminal performs logical channel priority processing according to the following steps:

Step a: For all logical channels with Bj>0, allocate resources in the order of priority from high to low. The resources allocated for each logical channel can only meet the requirements of PBR, that is, according to the PBR token bucket corresponding to the logical channel. The number of tokens allocates resources for this logical channel. When the PBR of a logical channel is set to infinity, only when the resources of this logical channel are satisfied, the logical channel with lower priority than it will be considered.

Step b: Subtract Bj by the size of all MAC SDUs multiplexed into the MAC PDU by logical channel j in step 1.

Step c: If there are remaining uplink resources after steps a and b are performed, regardless of the size of Bj, the remaining resources are allocated to each logical channel in order of logical channel priority from high to low. Only when the data of the high-priority logical channel has been sent and the UL grant has not been exhausted, the low-priority logical channel can be served. That is, at this time, the UE maximizes the data transmission of the high-priority logical channel.

At the same time, the terminal should also follow the following principles:

If the entire radio link control layer service data unit (Radio Link Control Service Data Unit, RLC SDU) can be filled into the remaining resources, the RLC SDU should not be segmented;

If the terminal segments the RLC SDU in the logical channel, it should try to fill in the largest segment according to the size of the remaining resources;

The terminal should maximize the transmission of data;

If the UL grant size is greater than or equal to 8 bytes (bytes), and the terminal has data transmission requirements, the terminal cannot only send padding BSR or only send padding.

For different signals and/or logical channels, the terminal also needs to follow the following priority order (in descending order of priority) when performing logical channel priority processing:

Cell-Radio Network Temporary Identifier (C-RNTI) MAC CE or data from the Uplink Common Control Channel (UL-CCCH);

Configured Grant Confirmation MAC CE;

For buffer status report (Buffer Status Report, BSR) MAC CE in addition to padding BSR;

Single entry (Single Entry) power headroom (Power Headroom, PHR) MAC CE or multiple entry (Multiple Entry) PHR MAC CE;

data from any logical channel except UL-CCCH;

MAC CE for Recommended bit rate query;

BSR MAC CE for padding BSR.

2) Preconfigured Uplink Resource (PUR)

In LTE Release16, for Narrow Band Internet of Things (NB-IoT) and Enhanced Machine Type Communication (eMTC) scenarios, the use of pre-configured uplink resources PUR in idle (IDLE) state is introduced. method of data transfer. The process of the terminal sending the PUR configuration request and receiving the network PUR configuration is as follows:

When the cell where the terminal is located supports PUR transmission, the terminal can request PUR through the PUR Configuration Request in the connected state, and the PUR Configuration Request can optionally include the requested PUR period, Transport Block Size (TBS), number of PURs, etc.; The (ng-)eNB configures the PUR for the terminal by including the PUR-Config field in the RRC Connectin Release message, and releases the terminal to the IDLE state at the same time. The configuration of the PUR is determined by the (ng-)eNB, possibly based on terminal requests, terminal registration information and/or local policies.

Optionally, the PUR is only valid in the currently configured cell, that is, when the terminal detects a cell change and initiates random access in the new cell, the terminal needs to release the PUR configured in the original cell.

For the Evolved Packet System (EPS)/5G System (5G Systom, 5GS) cellular IoT user plane function optimization solution, before a terminal in the IDLE state uses PUR for data transmission, the following prerequisites must be met:

Condition 1: Valid Timing Advance (TA).

TA needs to meet the above two conditions at the same time:

1) TA timer (timer): After the MAC layer receives the instruction from the upper layer, it starts the TA timer. When the upper layer judges the validity of the TA, it can confirm to the MAC layer whether the TA timer is running. When the TA timer times out, the MAC layer Feedback to higher level is required.

2) Reference Signal Receiving Power (RSRP) change: If the change (increase or decrease) of RSRP is greater than the set threshold, the TA is considered to be invalid.

Condition 2: Next Hop Chaining Count (NCC).

NCC is included in the RRC Connection Release message for the derivation of new keys;

Condition 3: A valid PUR.

Condition 4: There is an RRC connection establishment or recovery requirement.

For example, when uplink data arrives, it is determined that there is a need for RRC connection establishment or restoration.

For the EPS/5GS cellular IoT user plane function optimization solution, the process of using PUR for data transmission by a terminal in the IDLE state is as follows:

S0, the terminal determines that the above-mentioned PUR transmission preconditions are met;

S1, the terminal sends an RRC Connection Resume Request message to the eNB/ng-eNB, including Resume ID/I-RNTI, establishment cause, short Resume MAC-I, where Resume ID/IRNTI is used by the base station to identify the context of the UE in the suspend state, short Resume MAC-I is used for authentication. The terminal recovers all Signaling Radio Bearer (SRB) and Data Radio Bearer (DRB), and uses the NCC contained in the RRC Connection Release message of the last connection to derive a new key. User data is stored in the dedicated service. It is encrypted and transmitted on the Dedicated Traffic Channel (DTCH) and multiplexed with the RRC Connection Resume Request on the CCCH.

S2, the caller's small data transmission (Mobile-Originated Early-Data Transmission, MO-EDT) process.

S3, after the eNB/ng-eNB submits the user data to the core network, the terminal is kept in the IDLE state through the RRC Connection Release message. The RRC Connection Release message contains the following information:

a) release Cause is set to RRC-Suspend;

b) resume ID/I-RNTI;

c) NCC;

d) drb-ContinueROHC.

If the network has downlink data to send, it is encrypted and transmitted through DTCH, and multiplexed with the RRC Connection Release message on the DCCH.

3) Upstream EDT (UP-EDT)

In LTE, EDT, that is, small data transmission, has been introduced. During this process, the terminal may always remain in a suspend state to complete the transmission of uplink and/or downlink small data packets. For example, the flow of the user plane transmission scheme is as follows:

S0, the terminal selects one of the preamble groups used to indicate EDT and sends it to the eNB, and initiates the EDT transmission process. After receiving the corresponding preamble, the eNB configures the terminal with uplink resources and TA for EDT through RAR;

S1, the terminal sends an RRC Connection Resume Request message to the eNB, including Resume ID, establishment cause, and shortResume MAC-I. The terminal side restores all SRBs and DRBs, and derives a new key from the NCC contained in the last connection release message. User data is encrypted and transmitted on DTCH and multiplexed with RRC Connection Resume Request;

S2, the eNB establishes the S1 connection, initiates the context recovery process to the MME and reactivates the bearer between S1-U;

S3, the MME initiates a request to the S-GW to reactivate the bearer between the UE S1-U for subsequent user data submission to the S-GW;

S4, the MMC confirms to the eNB to restore the UE context;

S5, the user data is submitted to the S-GW;

S6, if the S-GW has downlink data to send at this time, the S-GW submits the downlink data to the eNB;

S7, eNB suspends S1 connection, MME deactivates the bearer between UE S1-U;

S8, the eNB sends an RRC Connection Release message to the UE to keep the UE in the suspend state.

For the above data transmission process, the terminal does not enter the connection state and completes the transmission of small data packets. In terms of configuration, the network side will configure a system message block (System Information Blocks, SIB), such as SIB2, to configure a maximum TB size that the current network allows transmission, and the terminal determines the amount of data to be transmitted. If it is smaller than the maximum transmission block of this broadcast (Transport Block, TB) size (size), the terminal can initiate EDT transmission; otherwise, the terminal uses the normal connection establishment process to enter the connection state to transmit data.

In the 5G NR system, there are three RRC states: RRC_IDLE (RRC idle state), RRC_INACTIVE (RRC inactive state), and RRC_CONNECTED (RRC connected state). The RRC_INACTIVE state is a new state introduced by the 5G system from the perspective of energy saving. Before Rel-16, the UE in the RRC_INACTIVE state did not support data transmission. When the MO or MT data arrives, the UE needs to resume the connection, and then release to the INACTIVE state after the data transmission is completed. For a UE with a small amount of data and a low transmission frequency, such a transmission mechanism may lead to unnecessary power consumption and signaling overhead. Therefore, Rel-17 established a project to carry out research on data transmission under RRC_INACTIVE. The project objectives mainly have two directions: uplink small data transmission based on random access process (two-step/four-step) and pre-configured resources (such as CG type1) Upstream small data transmission.

EDT under the LTE system mainly targets NB-IoT and eMTC, so the types of services are relatively simple, but the types of services under the 5G NR system are rich and have more refined quality of service (Quality of Service, QoS) configuration. In order to meet more scenarios and services, data transmission in the INACTIVE state can be configured according to logical channels, and specific services are limited to trigger the IDT process.

The embodiment of the present application provides a feasible solution for the inactive data transmission (Inactive Data Transmission, IDT) process based on the logical channel, and provides a feasible solution for how to utilize the UL grant to perform the logical channel priority (Logical Channel Prioritization, LCP) to form a MAC PDU.

Please refer to FIG. 2 , which shows a flowchart of an uplink data transmission method provided by an embodiment of the present application. The method may be executed by a terminal, where the terminal may be the terminal 10 in the network architecture shown in FIG. 1 . The method may include the following steps:

Step 201, when the terminal is in the radio resource control RRC inactive state and the inactive data transmission IDT condition is satisfied, the first uplink scheduling grant UL grant is determined according to the target IDT resource.

Wherein, the IDT condition is a condition preset in the terminal and used for judging whether to trigger the IDT process.

In a possible implementation manner, the above-mentioned UL grant is used to determine the format of the uplink transmission signal of the terminal, and the format includes: resource allocation information, transmission format, and the like.

Step 202, according to the first UL grant, perform logical channel priority processing on the first data to multiplex the first data into the first medium access control protocol data unit MAC PDU; In the transmitted data, the data comes from the first-type logical channel; the first-type logical channel is a logical channel that can trigger IDT.

Wherein, the data capacity of the first MAC PDU is indicated by the above-mentioned first UL grant, for example, the data capacity of the first MAC PDU is indicated by the above-mentioned resource allocation information.

In a possible implementation manner, the above-mentioned logical channel that can trigger the IDT is pre-configured in the terminal.

Step 203, based on the first MAC PDU, perform uplink data transmission to the network side device.

Please refer to FIG. 3 , which shows a schematic diagram of uplink data transmission of a terminal in an inactive state according to an embodiment of the present application. As shown in Figure 3, when the terminal detects that the IDT condition is satisfied, it triggers the selection of the target IDT resource 31, and determines the first uplink scheduling grant 32 based on the target IDT resource, and forms the first MAC PDU 33 according to the first uplink scheduling grant 32, Then, the terminal first processes the LCP to multiplex the first data 34 from the logical channel that can trigger the IDT to the first MAC PDU 33, and then the terminal initiates uplink data transmission to the network side based on the first MAC PDU 33.

To sum up, in the solutions shown in the embodiments of the present application, when the terminal is in the RRC inactive state, if the inactive transmission condition is satisfied, the data from the logical channel that can trigger the IDT is first filled to the LCP mode. The MAC PDU corresponding to the UL grant provides a feasible solution to use the UL grant to implement LCP processing to form a MAC PDU in the IDT process, so as to realize the uplink data transmission in the inactive state, and there is no need to transmit data every time. When all the time, the RRC connection is restored or established, which saves power consumption and signaling resources.

Please refer to FIG. 4 , which shows a flowchart of an uplink data transmission method provided by an embodiment of the present application. The method may be executed by a terminal and a network-side device, wherein the above-mentioned terminal may be in the network architecture shown in FIG. 1 . The terminal 10, the network side device may be the base station 20 in the network architecture shown in FIG. 1 . The method may include the following steps:

Step 401, the network side device delivers configuration information to the terminal, and accordingly, the terminal receives the configuration information delivered by the network side device.

Wherein, the configuration information is used to indicate at least one of the following information:

The first type of logical channels, IDT trigger conditions, and IDT resources.

In another possible implementation manner, the above configuration information may indicate at least one of the second type of logical channel, IDT conditions, and preconfigured IDT resources.

In a possible implementation manner, the network side device delivers the above configuration information to the terminal through designated signaling, and accordingly, the terminal receives the configuration information sent by the network side device through the designated signaling.

Wherein, the designated signaling includes at least one of broadcast signaling and dedicated signaling.

The first type of logical channel is a logical channel that can trigger IDT, and the second type of logical channel is a logical channel that cannot trigger IDT. For ease of description, in this embodiment of the present application, data from a logical channel that can trigger IDT may be referred to as IDT data, and data from a logical channel that is not capable of triggering IDT may be referred to as Non-IDT data.

After receiving the above-mentioned configuration information, the terminal configures the above-mentioned first-type logical channel, IDT condition, and IDT resource according to the configuration information.

Wherein, the above IDT conditions include at least one of the following conditions:

Transport block size TBS threshold; wherein, the TBS is used to indicate the number of bits transmitted in a single transmission time interval;

as well as,

Whether the next-hop link parameter NCC exists.

The above-mentioned IDT resources include at least one of the following IDT resources:

IDT resources based on 4-step random access; such as preamble, physical random access channel (Physical Random Access Channel, PRACH) resources, etc.;

IDT resources based on 2-step random access; such as preamble, uplink physical shared channel (Physical Uplink Shared Channel, PUSCH) resources associated with preamble, etc.;

And, pre-configured resources used for IDT transmission; that is, authorized configuration (Configured Grant, CG) resources, such as time-frequency location information, period information, and the like.

Step 402, when the terminal is in the RRC inactive state and the inactive data transmission IDT condition is satisfied, the target IDT resource is determined from the pre-configured IDT resources according to the IDT trigger condition.

For example, when the IDT condition includes the above-mentioned TBS threshold, if the data volume of the IDT data to be sent in the terminal reaches the above-mentioned TBS threshold, or is close to the above-mentioned TBS threshold (for example, the ratio of the data volume of IDT data to the TBS threshold reaches a preset ratio threshold), it is determined that the IDT condition is met.

Alternatively, when the IDT condition includes the existence of the next-hop link parameter NCC, if the terminal determines that the NCC exists, it is determined that the IDT condition is satisfied.

Alternatively, when the IDT condition includes the absence of the next-hop link parameter NCC, if the terminal determines that the NCC does not exist, it is determined that the IDT condition is satisfied.

In a possible implementation manner, the terminal determines the target IDT resource from the preconfigured IDT resources according to the data volume of the data to be sent in the terminal.

For example, the terminal determines the target IDT resource from the preconfigured IDT resources according to the data volume of the IDT data in the data to be sent.

Or, the terminal determines the target IDT resource from the preconfigured IDT resources according to the total data of the data to be sent.

Step 403, the terminal determines the first uplink scheduling grant UL grant according to the target IDT resource.

For example, if the terminal selects the IDT resource based on 4-step random access in the above step 402, the first UL grant is determined to be the UL grant scheduled in the RAR, and the subsequent IDT transmission is performed through the UL grant scheduled in the RAR.

If the terminal selects the IDT resource based on the 2-step random access in the above step 402, the first UL grant is determined as the UL grant determined by the PUSCH resource associated with the preamble, and the subsequent UL grant determined by the PUSCH resource associated with the selected preamble is determined. Carry out IDT transmission.

If the terminal selects based on the preconfigured resources for IDT transmission in the above step 402, it is determined that the first UL grant is the UL grant determined by the preconfigured resources, and the subsequent IDT transmission is performed by the UL grant determined by the preconfigured resources.

Step 404, according to the first UL grant, perform logical channel priority processing on the first data, so as to multiplex the first data into the first medium access control protocol data unit MAC PDU.

Wherein, the first data is data from a first type of logical channel among the data to be sent by the terminal; the first type of logical channel is a logical channel that can trigger IDT; that is, the first data is the above-mentioned IDT data.

In the embodiment of the present application, the terminal first performs LCP processing on the first data according to the first UL grant, so as to fill the first data into the first MAC PDU. Wherein, the size of the first MAC PDU is determined by the first UL grant.

Wherein, the first MAC PDU contains the medium access control layer control unit BSR MAC CE that bears the buffer status report.

Wherein, the first MAC PDU also includes a MAC header.

Step 405, when there are remaining bits in the first MAC PDU, perform logical channel priority processing on the second data to multiplex the second data into the first MAC PDU.

Wherein, the second data is the data from the second type of logical channel in the data to be sent; the second type of logical channel is a logical channel that cannot trigger IDT; that is, the first data is the above-mentioned Non-IDT data.

In the embodiment of the present application, after all the IDT data is filled into the first MAC PDU, if there are remaining bits in the first MAC PDU, the first MAC PDU is filled with Non-IDT data according to the LCP processing method.

In a possible implementation manner, when there are remaining bits in the first MAC PDU, and the logical channel priority of the second data is higher than the logical channel priority of the first data, the terminal responds to the second data Logical channel prioritization is performed to multiplex the second data into the first MAC PDU.

In a possible implementation of the embodiment of the present application, after the IDT data is all filled into the first MAC PDU, if there are remaining bits in the first MAC PDU, the terminal further compares the logical channel of the IDT data with the Non-IDT The priority of the logical channel of the data, if the priority of the logical channel of the Non-IDT data is higher than the priority of the logical channel of the IDT data, it means that the Non-IDT data is the data with a higher priority. The remaining bits in the MAC PDU transmit the higher priority Non-IDT data.

In a possible implementation manner, when there are remaining bits in the first MAC PDU and the first priority is higher than the second priority, logical channel priority processing is performed on the second data to Two data are multiplexed to the first MAC PDU;

The first priority is the priority of the logical channel with the highest priority in the logical channels corresponding to the second data; the second priority is the logical channel with the highest priority in the logical channels corresponding to the first data priority.

In a possible implementation manner, when there are remaining bits in the first MAC PDU, logical channel priority processing is performed on the first target data in the second data to multiplex the first target data into the first MAC PDU;

Wherein, the first target data is the data of the logical channel corresponding to the second data, the priority is higher than the second priority; the second priority is the logical channel corresponding to the first data, the priority The priority of the highest logical channel.

In a possible implementation, when there are remaining bits in the first MAC PDU and the logical channel priority of the second data is higher than the specified priority, the terminal performs logical channel priority processing on the second data, to multiplex the second data into the first MAC PDU.

In another possible implementation manner, the terminal may also set a specified priority to determine the Non-IDT data that needs to be transmitted through the remaining bits in the first MAC PDU. That is to say, after the IDT data is all filled into the first MAC PDU, if there are remaining bits in the first MAC PDU, the terminal further compares the priority of the logical channel of the IDT data with the specified priority. If the Non-IDT data The priority of the logical channel is higher than the specified priority, which means that the Non-IDT data is data with a higher priority. At this time, the non-IDT data with a higher priority is transmitted through the remaining bits in the first MAC PDU.

In a possible implementation manner, when there are remaining bits in the first MAC PDU, and the logical channel priority of the second data is not higher than the logical channel priority of the first data, or, the second data When the priority of the logical channel is not higher than the specified priority, the terminal fills the remaining bits in the first MAC PDU by padding.

In another possible implementation manner, when there are remaining bits in the first MAC PDU, padding bits are added to the remaining bits in the first MAC PDU.

Step 406, based on the first MAC PDU, perform uplink data transmission to the network side device.

After filling the above-mentioned first MAC PDU, the terminal sends uplink data to the network side device based on the first MAC PDU.

For example, when the target IDT resource selected by the terminal is an IDT resource based on 4-step/2-step random access, the terminal performs uplink data transmission through a random access message (Msg3/Msg A).

Alternatively, when the target IDT resource selected by the terminal is a preconfigured resource for IDT transmission, the terminal performs uplink data transmission through the preconfigured resource.

Step 407, the network side device returns scheduling information to the terminal, and correspondingly, the terminal receives the scheduling information returned by the network side device.

In a possible implementation manner, the network side device sends the scheduling information through the C-RNTI.

In the embodiment of the present application, the network side device determines, according to the BSR reported by the terminal (carried by the BSR MAC CE in the above-mentioned first MAC PDU), whether to restore the terminal to the connected state, or to continue to schedule the uplink in the INACTIVE state through the C-RNTI transmission. And according to the judgment result, the scheduling information is returned to the network side device.

Step 408, when the scheduling information indicates that the terminal continues to perform new IDT data transmission, the terminal determines the second UL grant according to the scheduling information.

In the embodiment of the present application, the above-mentioned second UL grant is scheduled by the network side device through the C-RNTI.

Step 409, the terminal performs logical channel priority processing on the remaining data to be sent by the terminal according to the second UL grant, so as to multiplex the remaining data to be sent into the second MAC PDU.

In a possible implementation manner, the terminal performs logical channel priority processing on the third data according to the second UL grant, so as to multiplex the third data into the second MAC PDU; the third data is the remaining data In the data to be sent, the data from the first type of logical channel;

In a possible implementation manner, when there are remaining bits in the second MAC PDU, logical channel priority processing is performed on the fourth data to multiplex the fourth data into the second MAC PDU; Four data is the data from the second type logical channel among the remaining data to be sent.

In a possible implementation manner, when there are remaining bits in the second MAC PDU, and the logical channel priority of the fourth data is higher than the logical channel priority of the third data, the fourth data is processed logical channel prioritization to multiplex the fourth data to the second MAC PDU.

In a possible implementation manner, when there are remaining bits in the second MAC PDU and the third priority is higher than the fourth priority, logical channel priority processing is performed on the fourth data to Four data are multiplexed to the second MAC PDU;

Wherein, the third priority is the priority of the logical channel with the highest priority among the logical channels corresponding to the fourth data; the fourth priority is the logical channel with the highest priority in the logical channels corresponding to the third data priority.

In a possible implementation manner, when there are remaining bits in the second MAC PDU, logical channel priority processing is performed on the second target data in the fourth data, so as to multiplex the second target data into the second MAC PDU;

Wherein, the second target data is the data of the logical channel corresponding to the fourth data, the priority is higher than that of the fourth priority; the fourth priority is the priority of the logical channel corresponding to the third data The priority of the highest logical channel.

In a possible implementation manner, when there are remaining bits in the second MAC PDU, padding bits are added to the remaining bits in the second MAC PDU.

In an exemplary solution of the embodiment of the present application, when the network-side device schedules the terminal to continue to perform uplink transmission in the inactive state, in the subsequent uplink transmission process, the terminal configures the components according to the solution similar to the above step 404 and step 405 MAC PDU, that is, fill with IDT data first, and then fill with Non-IDT data if there are remaining bits.

In a possible implementation manner, the terminal uniformly performs logical channel priority processing on all the remaining data to be sent according to the second UL grant, so as to multiplex the remaining data to be sent to the second MAC PDUs.

In an exemplary solution of the embodiment of the present application, when the network side device schedules the terminal to continue to perform uplink transmission in the inactive state, in the subsequent uplink transmission process, the terminal does not distinguish between IDT data and non-IDT data, but All data to be sent is multiplexed into MAC PDUs in the manner of LCP processing.

Step 410, the terminal performs uplink data transmission to the network side device based on the second MAC PDU.

In a possible implementation manner, the terminal performs uplink data transmission based on the second MAC PDU on the resources scheduled by the network side device through the scheduling information.

To sum up, in the solutions shown in the embodiments of the present application, when the terminal is in the RRC inactive state, if the inactive transmission condition is satisfied, the data from the logical channel that can trigger the IDT is first filled to the LCP mode. For the MAC PDU corresponding to the UL grant, if there are remaining bits after the data from the logical channel that can trigger IDT is filled, the data from the logical channel that cannot trigger IDT is then filled into the MAC PDU by LCP, so as to Provides a feasible solution to use UL grant to implement LCP processing to form MAC PDUs in the IDT process, so as to realize uplink data transmission in an inactive state, without the need to restore or establish an RRC connection every time there is data to be transmitted , saving power consumption and signaling resources.

In addition, in the solution shown in the embodiment of the present application, the terminal first fills the MAC PDU with data from the logical channel that can trigger the IDT. The data of the logical channel of the IDT can use the remaining resources to transmit other data under the condition that the data that needs to be transmitted through the IDT is guaranteed to be preferentially transmitted, thereby improving the utilization rate of the wireless resources.

Please refer to FIG. 5 , which is a schematic diagram of an IDT transmission process provided by an embodiment of the present application. As shown in Figure 5, taking the network side device as a base station as an example, in the solution shown in Figure 4 above, the IDT transmission process between the terminal and the base station is as follows:

S51, the terminal transmits IDT data to the base station through a random access message (Msg3/Msg A), and detects the contention resolution message returned by the base station. Or, in S52, the terminal transmits the IDT data to the base station through the CG resource.

S53, the base station schedules the UL grant that continues to be transmitted in the inactive state for the terminal through the C-RNTI.

S54, the terminal performs subsequent uplink transmission through the UL grant scheduled by the base station.

S55, release the RRC connection.

Wherein, in the above solution of the embodiment of the present application, when the terminal forms the MAC PDU, based on the UL grant, the IDT data and the Non-IDT data are processed by the LCP mode.

Please refer to FIG. 6 , which shows a schematic diagram of an uplink transmission involved in an embodiment of the present application. As shown in Figure 6, in the IDT process, the IDT data is only preferentially multiplexed in the UL grant determined by the PUSCH resource/CG resource associated with the RAR/preamble. The uplink transmission process is as follows:

Assume that the IDT-related parameters configured by the network-side device for the terminal are as follows:

a) The logical channels that can trigger IDT are logical channel #1 and logical channel #2;

b) IDT resources based on 4-step random access, and/or IDT resources based on 2-step random access, and/or CG resources for IDT;

c) IDT trigger condition.

S61, the terminal satisfies the IDT trigger condition, and determines the UL grant through the IDT resource (PUSCH resource/CG resource associated with RAR/preamble).

S62, when multiplexing and forming MAC PDUs, the terminal first selects a logical channel that triggers the IDT, such as logical channel #1, and/or IDT data in logical channel #2 for multiplexing. Assuming that the UL grant size is 2000bits, IDT data + MAC header + BSR MAC CE requires 1500 bits.

S63, for the remaining capacity (500 bits), the terminal fills with Non-IDT data. There are two options for this filling process:

a) If there is Non-IDT data, use the remaining bits to multiplex some/all Non-IDT data according to the logical channel priority corresponding to the Non-IDT data, otherwise it is padding bits;

b) If there is Non-IDT data, and the priority of the logical channel corresponding to the Non-IDT data is higher than the priority of the logical channel that triggers the IDT, use the remaining bits to multiplex some/all of the Non-IDT data, otherwise it is padding bits.

S64, if the network side device continues to schedule the terminal to transmit data in the RRC_INACTIVE state through the C-RNTI according to the BSR reported by the terminal, the terminal does not distinguish whether the current data to be transmitted is IDT data, and multiplexes and forms a MAC PDU for all the data to be transmitted.

The advantage of this solution is that after the IDT data transmission is completed, the uplink resources scheduled by the C-RNTI can be fully utilized to deliver data with higher priority to the network. For example, the priority of the logical channel that triggers IDT is lower than that which cannot trigger IDT logical channel priority.

Please refer to FIG. 7 , which shows another schematic diagram of uplink transmission involved in the embodiment of the present application. As shown in Figure 7, in the IDT process, regardless of the way of determining the UL grant, the IDT data needs to be multiplexed preferentially. The uplink transmission process is as follows:

b) IDT resources based on 4-step random access, and/or IDT resources based on 2-step random access, and/or CG resources for IDT

c) IDT trigger condition;

S71 to S73 are similar to steps S61 to S63, and are not repeated here.

S74, if the network side device schedules the UL grant through the C-RNTI according to the BSR reported by the terminal, instructing the terminal to continue to transmit data in the RRC_INACTIVE state. When multiplexing and forming MAC PDUs, the terminal preferentially selects the IDT logical channel that still has data to be transmitted, such as logical channel #1, and/or IDT data in logical channel #2 for multiplexing. Assuming that the UL grant size is 1000bits, IDT data to be transmitted + MAC header + BSR MAC CE requires 800 bits.

S75, for the remaining capacity (200 bits), the terminal selects the same scheme as in step S63/S73.

The advantage of this scheme is that in the IDT process, it is always guaranteed that the data from the logical channel that can trigger the IDT can be transmitted preferentially, and the Non-IDT has a lower priority or is not allowed to transmit Non-IDT data in the IDT process.

The following are apparatus embodiments of the present application, which can be used to execute the method embodiments of the present application. For details not disclosed in the device embodiments of the present application, please refer to the method embodiments of the present application.

Please refer to FIG. 8 , which shows a block diagram of an apparatus for uplink data transmission provided by an embodiment of the present application. The device has the function of implementing the above-mentioned uplink data transmission method. As shown in Figure 8, the apparatus may include:

The first uplink grant determination module 801 is configured to determine the first uplink scheduling grant UL grant according to the target IDT resource when the terminal is in the radio resource control RRC inactive state and satisfies the inactive data transmission IDT condition;

a first data processing module 802, configured to perform logical channel priority processing on the first data according to the first UL grant, so as to multiplex the first data into the first medium access control protocol data unit MAC PDU; The first data is the data to be sent by the terminal, from the first type of logical channel; the first type of logical channel is a logical channel that can trigger IDT;

The first uplink data transmission module 803 is configured to perform uplink data transmission to the network side device based on the first MAC PDU.

In a possible implementation, the apparatus further includes:

a second data processing module, configured to perform logical channel priority processing on the second data when there are remaining bits in the first MAC PDU, so as to multiplex the second data into the first MAC PDU; The second data is the data from the second-type logical channel in the data to be sent; the second-type logical channel is a non-triggerable IDT logical channel;

In a possible implementation manner, the second data processing module 803 is configured to, when there are remaining bits in the first MAC PDU, and the logical channel priority of the second data is higher than that of the first MAC PDU When the logical channel priority of the data is determined, logical channel priority processing is performed on the second data, so as to multiplex the second data into the first MAC PDU.

In a possible implementation manner, the second data processing module is configured to, when there are remaining bits in the first MAC PDU and the first priority is higher than the second priority, performing logical channel priority processing on the data to multiplex the second data into the first MAC PDU;

The first priority is the priority of the logical channel with the highest priority among the logical channels corresponding to the second data; the second priority is the priority of the logical channel corresponding to the first data The priority of the highest logical channel.

In a possible implementation manner, the second data processing module is configured to perform logical channel priority on the first target data in the second data when there are remaining bits in the first MAC PDU processing to multiplex the first target data to the first MAC PDU;

Wherein, the first target data is the data of the logical channel corresponding to the second data, the priority is higher than the second priority; the second priority is the logical channel corresponding to the first data , the priority of the logical channel with the highest priority.

In a possible implementation, the apparatus further includes:

A first padding bit adding module, configured to add padding bits to the remaining bits of the first MAC PDU when there are remaining bits in the first MAC PDU.

In a possible implementation, the apparatus further includes:

The IDT resource determination module is configured to determine the target IDT resource from pre-configured IDT resources according to an IDT trigger condition; the pre-configured IDT resources include at least one of the following IDT resources:

IDT resources based on 4-step random access;

ID resource based on 2-step random access;

And, preconfigured resources for IDT transmission.

In a possible implementation, the apparatus further includes:

A configuration information receiving module, configured to receive configuration information delivered by the network-side device, where the configuration information is used to indicate at least one of the following information:

the first type of logical channel, the IDT trigger condition, and the pre-configured IDT resource.

In a possible implementation, the apparatus further includes:

The second uplink grant determination module is configured to, when receiving the scheduling information sent by the network-side device through the cell wireless network temporary identifier C-RNTI, and the scheduling information instructs the terminal to continue to perform new IDT data transmission, according to the The scheduling information determines the second UL grant;

A remaining data processing module, configured to perform logical channel priority processing on the remaining data to be sent of the terminal according to the second UL grant, so as to multiplex the remaining data to be sent to the second MAC PDU;

A second uplink data transmission module, configured to perform uplink data transmission to the network side device based on the second MAC PDU.

In a possible implementation manner, the remaining data processing module includes:

A third data processing unit, configured to perform logical channel priority processing on the third data according to the second UL grant, so as to multiplex the third data into the second MAC PDU; the third data is Among the remaining data to be sent, data from the first type of logical channel;

a fourth data processing unit, configured to perform logical channel priority processing on the fourth data when there are remaining bits in the second MAC PDU, so as to multiplex the fourth data into the second MAC PDU; The fourth data is the data from the second-type logical channel among the remaining data to be sent.

In a possible implementation manner, the fourth data processing unit is configured to, when there are remaining bits in the second MAC PDU, and the logical channel priority of the fourth data is higher than that of the third data When the logical channel priority is determined, perform logical channel priority processing on the fourth data, so as to multiplex the fourth data into the second MAC PDU.

In a possible implementation manner, the fourth data processing unit is configured to, when there are remaining bits in the second MAC PDU and the third priority is higher than the fourth priority, perform processing on the fourth data performing logical channel prioritization processing to multiplex the fourth data to the second MAC PDU;

Wherein, the third priority is the priority of the logical channel with the highest priority among the logical channels corresponding to the fourth data; the fourth priority is the priority of the logical channel corresponding to the third data The priority of the highest logical channel.

In a possible implementation manner, the fourth data processing unit is configured to perform logical channel priority processing on the second target data in the fourth data when there are remaining bits in the second MAC PDU , to multiplex the second target data to the second MAC PDU;

Wherein, the second target data is the data of the logical channel corresponding to the fourth data, the priority is higher than the fourth priority; the fourth priority is the logical channel corresponding to the third data , the priority of the logical channel with the highest priority.

In a possible implementation, the apparatus further includes:

A second padding bit adding module is configured to add padding bits to the remaining bits of the second MAC PDU when there are remaining bits in the second MAC PDU.

In a possible implementation manner, the remaining data processing module is configured to uniformly perform logical channel priority processing on all the remaining data to be sent according to the second UL grant, so as to The data to be sent is multiplexed into the second MAC PDU.

In a possible implementation manner, the first MAC PDU includes a medium access control layer control unit that carries a buffer status report.

To sum up, in the solutions shown in the embodiments of the present application, when the terminal is in the RRC inactive state, if the inactive transmission condition is satisfied, the data from the logical channel that can trigger the IDT is first filled to the LCP mode. For the MAC PDU corresponding to the UL grant, if there are remaining bits after the data from the logical channel that can trigger the IDT is filled, then the data from the logical channel that is not the trigger of the IDT can be filled into the MAC PDU by LCP, so as to Provides a feasible solution to use UL grant to implement LCP processing to form MAC PDUs in the IDT process, so as to realize uplink data transmission in an inactive state, without the need to restore or establish an RRC connection every time there is data to be transmitted , saving power consumption and signaling resources.

It should be noted that, when the device provided in the above embodiment realizes its functions, only the division of the above functional modules is used as an example for illustration. In practical applications, the above functions can be allocated to different functional modules according to actual needs. That is, the content structure of the device is divided into different functional modules to complete all or part of the functions described above.

Regarding the apparatus in the above-mentioned embodiment, the specific manner in which each module performs operations has been described in detail in the embodiment of the method, and will not be described in detail here.

Please refer to FIG. 9 , which shows a schematic structural diagram of a computer device 900 provided by an embodiment of the present application. The computer device 900 may include: a processor 901 , a receiver 902 , a transmitter 903 , a memory 904 and a bus 905 .

The processor 901 includes one or more processing cores, and the processor 901 executes various functional applications and information processing by running software programs and modules.

The receiver 902 and the transmitter 903 may be implemented as a communication component, which may be a communication chip. The communication chip may also be referred to as a transceiver.

The memory 904 is connected to the processor 901 through the bus 905 .

The memory 904 can be used to store a computer program, and the processor 901 is used to execute the computer program to implement each step performed by the server device, configuration device, cloud platform, or account server in the above method embodiments.

Additionally, memory 904 may be implemented by any type or combination of volatile or non-volatile storage devices including, but not limited to, magnetic or optical disks, electrically erasable programmable Read Only Memory, Erasable Programmable Read Only Memory, Static Anytime 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 (the transceiver may include a receiver for receiving information and a transmitter for transmitting information);

In a possible implementation manner, when the computer device is implemented as a terminal, the terminal includes a processor, a memory and a transceiver;

The processor is configured to determine the first uplink scheduling grant UL grant according to the target IDT resource when the terminal is in the RRC inactive state and the inactive data transmission IDT condition is met;

The processor is configured to perform logical channel priority processing on the first data according to the first UL grant, so as to multiplex the first data into a first medium access control protocol data unit MAC PDU; the first data One data is the data to be sent by the terminal, from the first type of logical channel; the first type of logical channel is a logical channel that can trigger IDT;

The transceiver is configured to perform uplink data transmission to the network side device based on the first MAC PDU.

The processor and transceiver in the terminal involved in the embodiments of the present application may perform the steps performed by the terminal in the method shown in FIG. 2 or FIG. 4 , which will not be repeated here.

Embodiments of the present application further provide a computer-readable storage medium, where a computer program is stored in the storage medium, and the computer program is loaded and executed by a processor to implement the uplink data transmission method shown in FIG. 2 or FIG. 4 . in each step.

The application also provides a computer program product or computer program, the computer program product or computer program comprising computer instructions stored in a computer-readable storage medium. The processor of the computer device reads the computer instruction from the computer-readable storage medium, and the processor executes the computer instruction, so that the computer device performs each step in the uplink data transmission method shown in the above 2 or FIG. 4 .

Those skilled in the art should realize that, in one or more of the above examples, the functions described in the embodiments of the present application may be implemented by hardware, software, firmware, or any combination thereof. When implemented in software, the 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 medium can be any available medium that can be accessed by a general purpose or special purpose computer.

The above are only exemplary embodiments of the present application and are not intended to limit the present application. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present application shall be included in the protection of the present application. within the range.

Claims

An uplink data transmission method, characterized in that the method comprises:

When the terminal is in the radio resource control RRC inactive state and satisfies the inactive data transmission IDT condition, determine the first uplink scheduling grant UL grant according to the target IDT resource;

According to the first UL grant, logical channel priority processing is performed on the first data to multiplex the first data into the first medium access control protocol data unit MAC PDU; the first data is of the terminal Among the data to be sent, the data comes from a first-type logical channel; the first-type logical channel is a logical channel that can trigger IDT;

Based on the first MAC PDU, uplink data transmission is performed to the network side device.
The method according to claim 1, wherein the method further comprises:

When there are remaining bits in the first MAC PDU, logical channel priority processing is performed on the second data to multiplex the second data into the first MAC PDU; the second data is the Among the data to be sent, the data comes from a second-type logical channel; the second-type logical channel is a logical channel that cannot trigger IDT.
The method according to claim 2, wherein when there are remaining bits in the first MAC PDU, performing logical channel priority processing on the second data to multiplex the second data into The first MAC PDU includes:

When there are remaining bits in the first MAC PDU and the logical channel priority of the second data is higher than the logical channel priority of the first data, perform logical channel priority processing on the second data , to multiplex the second data to the first MAC PDU.
The method according to claim 3, wherein when there are remaining bits in the first MAC PDU, and the logical channel priority of the second data is higher than the logical channel priority of the first data At the time of level, logical channel priority processing is performed on the second data to multiplex the second data to the first MAC PDU, including:

When there are remaining bits in the first MAC PDU and the first priority is higher than the second priority, perform logical channel priority processing on the second data to multiplex the second data to all the first MAC PDU;

The first priority is the priority of the logical channel with the highest priority among the logical channels corresponding to the second data; the second priority is the priority of the logical channel corresponding to the first data The priority of the highest logical channel.
The method according to claim 3, wherein when there are remaining bits in the first MAC PDU, and the logical channel priority of the second data is higher than the logical channel priority of the first data At the time of level, logical channel priority processing is performed on the second data to multiplex the second data to the first MAC PDU, including:

When there are remaining bits in the first MAC PDU, perform logical channel priority processing on the first target data in the second data, so as to multiplex the first target data into the first MAC PDU ;

Wherein, the first target data is the data of the logical channel corresponding to the second data, the priority is higher than the second priority; the second priority is the logical channel corresponding to the first data , the priority of the logical channel with the highest priority.
The method according to claim 1, wherein the method further comprises:

When there are remaining bits in the first MAC PDU, padding bits are added to the remaining bits in the first MAC PDU.
The method according to claim 1, wherein the method further comprises:

According to the IDT trigger condition, the target IDT resource is determined from the pre-configured IDT resources; the pre-configured IDT resources include at least one of the following IDT resources:

IDT resources based on 4-step random access;

ID resource based on 2-step random access;

And, preconfigured resources for IDT transmission.
The method according to claim 1, wherein the method further comprises:

Receive configuration information delivered by the network-side device, where the configuration information is used to indicate at least one of the following information:

the first type of logical channel, the IDT trigger condition, and the pre-configured IDT resource.
The method according to claim 5, wherein the receiving configuration information delivered by the network side device comprises:

receiving the configuration information delivered by the network-side device through specified signaling;

The designated signaling includes at least one of broadcast signaling and dedicated signaling.
The method according to any one of claims 1 to 9, wherein the method further comprises:

When receiving the scheduling information sent by the network-side device through the cell wireless network temporary identifier C-RNTI, and the scheduling information instructs the terminal to continue to perform new IDT data transmission, determining a second UL grant according to the scheduling information;

According to the second UL grant, perform logical channel priority processing on the remaining data to be sent by the terminal, so as to multiplex the remaining data to be sent into the second MAC PDU;

Based on the second MAC PDU, uplink data transmission is performed to the network side device.
The method according to claim 10, wherein, according to the second UL grant, logical channel priority processing is performed on the remaining data to be sent by the terminal, so as to multiplex the remaining data to be sent to the second MAC PDU, including:

According to the second UL grant, logical channel priority processing is performed on the third data to multiplex the third data into the second MAC PDU; the third data is among the remaining data to be sent , data from the first type of logical channel.
The method according to claim 11, wherein the method further comprises:

When there are remaining bits in the second MAC PDU, logical channel priority processing is performed on the fourth data to multiplex the fourth data into the second MAC PDU; the fourth data is the Among the remaining data to be sent, the data comes from the second type of logical channel.
The method according to claim 12, wherein when there are remaining bits in the second MAC PDU, performing logical channel priority processing on the fourth data to multiplex the fourth data into The second MAC PDU includes:

When there are remaining bits in the second MAC PDU and the logical channel priority of the fourth data is higher than the logical channel priority of the third data, perform logical channel priority processing on the fourth data , to multiplex the fourth data to the second MAC PDU.
The method according to claim 13, wherein when there are remaining bits in the second MAC PDU, and the logical channel priority of the fourth data is higher than the logical channel priority of the third data At the time of level, performing logical channel priority processing on the fourth data to multiplex the fourth data to the second MAC PDU, including:

When there are remaining bits in the second MAC PDU and the third priority is higher than the fourth priority, perform logical channel priority processing on the fourth data to multiplex the fourth data to all the second MAC PDU;

Wherein, the third priority is the priority of the logical channel with the highest priority among the logical channels corresponding to the fourth data; the fourth priority is the priority of the logical channel corresponding to the third data The priority of the highest logical channel.
The method according to claim 13, wherein when there are remaining bits in the second MAC PDU, and the logical channel priority of the fourth data is higher than the logical channel priority of the third data At the time of level, performing logical channel priority processing on the fourth data to multiplex the fourth data to the second MAC PDU, including:

When there are remaining bits in the second MAC PDU, perform logical channel priority processing on the second target data in the fourth data, so as to multiplex the second target data into the second MAC PDU ;

Wherein, the second target data is the data of the logical channel corresponding to the fourth data, the priority is higher than the fourth priority; the fourth priority is the logical channel corresponding to the third data , the priority of the logical channel with the highest priority.
The method according to claim 11, wherein the method further comprises:

When there are remaining bits in the second MAC PDU, padding bits are added to the remaining bits in the second MAC PDU.
The method according to claim 10, wherein, according to the second UL grant, logical channel priority processing is performed on the remaining data to be sent by the terminal, so as to multiplex the remaining data to be sent to the second MAC PDU, including:

According to the second UL grant, logical channel priority processing is uniformly performed on all the remaining data to be sent, so as to multiplex the remaining data to be sent to the second MAC PDU.
The method according to any one of claims 1 to 9, wherein the first MAC PDU includes a medium access control layer control unit that carries a buffer status report.
An uplink data transmission device, characterized in that the device comprises:

a first uplink grant determination module, configured to determine the first uplink scheduling grant UL grant according to the target IDT resource when the terminal is in a radio resource control RRC inactive state and satisfies the inactive data transmission IDT condition;

a first data processing module, configured to perform logical channel priority processing on the first data according to the first UL grant, so as to multiplex the first data into a first medium access control protocol data unit MAC PDU; the The first data is the data to be sent by the terminal, from the first type of logical channel; the first type of logical channel is a logical channel that can trigger IDT;

The first uplink data transmission module is configured to perform uplink data transmission to the network side device based on the first MAC PDU.
The apparatus of claim 19, wherein the apparatus further comprises:

a second data processing module, configured to perform logical channel priority processing on the second data when there are remaining bits in the first MAC PDU, so as to multiplex the second data into the first MAC PDU; The second data is the data from the second-type logical channel in the data to be sent; the second-type logical channel is a non-triggerable IDT logical channel.
The apparatus of claim 20, wherein:

The second data processing module is configured to, when there are remaining bits in the first MAC PDU, and the logical channel priority of the second data is higher than the logical channel priority of the first data, to The second data is subjected to logical channel priority processing to multiplex the second data to the first MAC PDU.
The device of claim 21, wherein:

The second data processing module is configured to perform logical channel priority processing on the second data when there are remaining bits in the first MAC PDU and the first priority is higher than the second priority, so as to multiplexing the second data into the first MAC PDU;

The first priority is the priority of the logical channel with the highest priority among the logical channels corresponding to the second data; the second priority is the priority of the logical channel corresponding to the first data The priority of the highest logical channel.
The device of claim 21, wherein:

The second data processing module is configured to perform logical channel priority processing on the first target data in the second data when there are remaining bits in the first MAC PDU, so as to data multiplexing to the first MAC PDU;

Wherein, the first target data is the data of the logical channel corresponding to the second data, the priority is higher than the second priority; the second priority is the logical channel corresponding to the first data , the priority of the logical channel with the highest priority.
The apparatus of claim 19, wherein the apparatus further comprises:

A first padding bit adding module, configured to add padding bits to the remaining bits of the first MAC PDU when there are remaining bits in the first MAC PDU.
The apparatus of claim 19, wherein the apparatus further comprises:

The IDT resource determination module is configured to determine the target IDT resource from pre-configured IDT resources according to an IDT trigger condition; the pre-configured IDT resources include at least one of the following IDT resources:

IDT resources based on 4-step random access;

ID resource based on 2-step random access;

And, preconfigured resources for IDT transmission.
The apparatus of claim 19, wherein the apparatus further comprises:

A configuration information receiving module, configured to receive configuration information delivered by the network-side device, where the configuration information is used to indicate at least one of the following information:

the first type of logical channel, the IDT trigger condition, and the pre-configured IDT resource.
The apparatus of claim 26, wherein:

The configuration information receiving module is configured to receive the configuration information sent by the network side device through designated signaling;

The designated signaling includes at least one of broadcast signaling and dedicated signaling.
The device according to any one of claims 19-27, wherein the device further comprises:

The second uplink grant determination module is configured to, when receiving the scheduling information sent by the network-side device through the cell wireless network temporary identifier C-RNTI, and the scheduling information instructs the terminal to continue to perform new IDT data transmission, according to the The scheduling information determines the second UL grant;

A remaining data processing module, configured to perform logical channel priority processing on the remaining data to be sent of the terminal according to the second UL grant, so as to multiplex the remaining data to be sent to the second MAC PDU;

A second uplink data transmission module, configured to perform uplink data transmission to the network side device based on the second MAC PDU.
The apparatus according to claim 28, wherein the remaining data processing module comprises:

A third data processing unit, configured to perform logical channel priority processing on the third data according to the second UL grant, so as to multiplex the third data into the second MAC PDU; the third data is Among the remaining data to be sent, the data comes from the logical channel of the first type.
The apparatus according to claim 28, wherein the remaining data processing module comprises:

a fourth data processing unit, configured to perform logical channel priority processing on the fourth data when there are remaining bits in the second MAC PDU, so as to multiplex the fourth data into the second MAC PDU; The fourth data is the data from the second-type logical channel among the remaining data to be sent.
The apparatus of claim 30, wherein:

The fourth data processing unit is configured to, when there are remaining bits in the second MAC PDU and the logical channel priority of the fourth data is higher than the logical channel priority of the third data The fourth data is subjected to logical channel priority processing to multiplex the fourth data to the second MAC PDU.
The apparatus of claim 31, wherein:

The fourth data processing unit is configured to perform logical channel priority processing on the fourth data when there are remaining bits in the second MAC PDU and the third priority is higher than the fourth priority, so as to multiplexing the fourth data to the second MAC PDU;

Wherein, the third priority is the priority of the logical channel with the highest priority among the logical channels corresponding to the fourth data; the fourth priority is the priority of the logical channel corresponding to the third data The priority of the highest logical channel.
The apparatus of claim 31, wherein:

The fourth data processing unit is configured to perform logical channel priority processing on the second target data in the fourth data when there are remaining bits in the second MAC PDU, so that the second target data multiplexing to the second MAC PDU;

Wherein, the second target data is the data of the logical channel corresponding to the fourth data, the priority is higher than the fourth priority; the fourth priority is the logical channel corresponding to the third data , the priority of the logical channel with the highest priority.
The apparatus of claim 29, wherein the apparatus further comprises:

A second padding bit adding module is configured to add padding bits to the remaining bits of the second MAC PDU when there are remaining bits in the second MAC PDU.
The apparatus of claim 28, wherein:

The remaining data processing module is configured to uniformly perform logical channel priority processing on all the remaining data to be sent according to the second UL grant, so as to multiplex the remaining data to be sent to the Second MAC PDU.
The apparatus according to any one of claims 19-27, wherein the first MAC PDU includes a medium access control layer control unit that carries a buffer status report.
A terminal, characterized in that the terminal includes a processor, a memory and a transceiver;

The processor is configured to determine the first uplink scheduling grant UL grant according to the target IDT resource when the terminal is in the RRC inactive state and the inactive data transmission IDT condition is met;

The processor is configured to perform logical channel priority processing on the first data according to the first UL grant, so as to multiplex the first data into a first medium access control protocol data unit MAC PDU; the first data One data is the data to be sent by the terminal, from the first type of logical channel; the first type of logical channel is a logical channel that can trigger IDT;

The transceiver is configured to perform uplink data transmission to the network side device based on the first MAC PDU.
A computer-readable storage medium, wherein a computer program is stored in the storage medium, and the computer program is used to be executed by a processor to realize the uplink data transmission according to any one of claims 1 to 18 method.