WO2022206273A1

WO2022206273A1 - Physical uplink shared channel repeat transmission method and apparatus, and readable storage medium

Info

Publication number: WO2022206273A1
Application number: PCT/CN2022/078879
Authority: WO
Inventors: 王磊
Original assignee: 大唐移动通信设备有限公司
Priority date: 2021-03-31
Filing date: 2022-03-02
Publication date: 2022-10-06
Also published as: CN115150029B; CN115150029A

Abstract

Provided in the present disclosure are a physical uplink shared channel repeat transmission method and apparatus, and a readable storage medium. The method comprises: determining to use a preset TDRA table for PUSCH transmission, wherein the preset TDRA table contains information about the number of instances of repeat transmission; and performing PUSCH repeat transmission on the basis of the information about the number of instances of repeat transmission in the preset TDRA table, wherein the preset TDRA table is acquired from protocol predefined information, or system information block (SIB1) information which is sent by a base station. In addition to a default TDRA table of an existing protocol, a preset TDRA table containing information about the number of instances of repeat transmission is set, and when determining to use the preset TDRA table, a UE can perform PUSCH repeat transmission on the basis of the information about the number of instances of repeat transmission in the preset TDRA table. Since the preset TDRA table is set in the solution, the repeat transmission solution has a high flexibility in terms of resource allocation, and is adapted to a plurality of terminal types.

Description

Method, device and readable storage medium for repeated transmission of physical uplink shared channel

CROSS-REFERENCE TO RELATED APPLICATIONS

The present disclosure claims priority to Chinese Patent Application No. CN202110350516.9, filed with the State Intellectual Property Office of China on March 31, 2021, the entire contents of which are incorporated herein by reference in their entirety.

technical field

The present disclosure relates to the field of wireless communication technologies, and in particular, the present disclosure relates to a method, an apparatus, and a readable storage medium for repeated transmission of a physical uplink shared channel.

Background technique

In the current 5G NR (5th Generation New RAT, the new air interface of the fifth generation mobile communication system) mobile communication system, the coverage of a cell is a technical indicator that operators are very concerned about. In the SI (study item, research project) stage of the Rel-17 coverage enhancement project, various companies provided a large number of simulation results, proving that msg3 (message3) PUSCH (Physical Uplink Shared Channel, Physical Uplink Shared Channel) transmission is a 5G NR system. Coverage bottleneck. Therefore, how to enhance the coverage of msg3 PUSCH is an important issue in the Rel-17 stage. 3GPP (3rd Generation Partnership Project, 3rd Generation Partnership Project) decided to introduce a retransmission mechanism of repetition type (repetition type) A for msg3 PUSCH. However, there is currently no clear solution on how to determine the number of msg3 PUSCH repetitions, so it is necessary to provide a PUSCH repetition transmission method.

SUMMARY OF THE INVENTION

The purpose of the present disclosure is to solve at least one of the above-mentioned technical defects, and the technical solutions provided by the embodiments of the present disclosure are as follows:

In a first aspect, an embodiment of the present disclosure provides a method for repeated transmission of a physical uplink shared channel PUSCH, including:

It is determined that a preset TDRA table is used for PUSCH transmission, and the preset TDRA table contains information on the number of repeated transmissions;

Perform PUSCH repeated transmission based on the repeated transmission times information in the preset TDRA table;

The preset TDRA table is obtained from protocol predefined information or system information block SIB1 information sent by the base station.

In an optional embodiment of the present disclosure, determining to use a preset TDRA table for PUSCH transmission includes:

Receive the TDRA table indication information sent by the base station;

Based on the TDRA table indication information, it is determined whether to use the preset TDRA table for PUSCH transmission.

In an optional embodiment of the present disclosure, the first reserved bit included in the UL grant of the corresponding RAR uplink grant for random access is used to carry the TDRA table indication information, then based on the TDRA table indication information, it is determined to use the preset TDRA table for PUSCH transmission, including:

If the value of the first reserved bit is the first preset value, it is determined to use the preset TDRA table for PUSCH transmission.

In an optional embodiment of the present disclosure, the first predefined bit of the second reserved bit of the downlink control information DCI of the scheduled RAR physical downlink shared channel PDSCH is used to carry the TDRA table indication information, then based on the TDRA table indication information, determine Use preset TDRA table for PUSCH transmission, including:

If the value of the first predefined bit is the second preset value, it is determined to use the preset TDRA table for PUSCH transmission.

In an optional embodiment of the present disclosure, N bits of the second reserved bits of the DCI of the RAR PDSCH are used to carry the TDRA table indication information, then based on the TDRA table indication information, it is determined to use the preset TDRA table for PUSCH transmission, including :

Based on the first preset correspondence between the N medium access control MAC RARs and the N bits in the second reserved bits of the DCI, it is determined that the N bits of the second reserved bits of the DCI correspond to the MAC RARs of the N user terminals UE , where N is a natural number greater than 1;

If the value of the target bit is the third preset value, it is determined to use the preset TDRA table for PUSCH transmission;

The first preset corresponding relationship is obtained from protocol predefined information.

In an optional embodiment of the present disclosure, the second predefined bits of other information fields other than the TDRA field in the RAR UL grant are used to carry the TDRA table indication information, then based on the TDRA table indication information, it is determined to use the preset TDRA table for PUSCH transmission, including:

If the value of the second predefined bit is the fourth preset value, it is determined to use the preset TDRA table for PUSCH transmission.

Determine the target preamble group corresponding to the preset TDRA table based on the second preset correspondence between each preamble group and each TDRA table;

If the preamble sent by the current UE belongs to the target preamble group, it is determined to use the preset TDRA table for PUSCH transmission;

Wherein, the second preset corresponding relationship is obtained from protocol predefined information or SIB1 information.

Determine the target RO group corresponding to the preset TDRA table based on the third preset correspondence between each random access opportunity RO group and each TDRA table;

If the current UE sends the preamble on the RO belonging to the target RO group, it is determined to use the preset TDRA table for PUSCH transmission;

The third preset corresponding relationship is obtained from protocol predefined information or SIB1 information.

In an optional embodiment of the present disclosure, the repeated transmission of PUSCH is performed based on the repeated transmission times information in the preset TDRA table, including:

Receive the RAR UL grant sent by the base station;

Based on the TDRA field in the RAR UL grant, determine the corresponding time domain resources and the number of repeated transmissions from the preset TDRA table;

PUSCH repeated transmission is performed based on time domain resources and the number of repeated transmissions.

In an optional embodiment of the present disclosure, the method further includes:

If it is determined not to use the preset TDRA table for PUSCH transmission based on the TDRA table indication information, then it is determined to use the default TDRA table for PUSCH transmission.

In a second aspect, an embodiment of the present disclosure provides a method for retransmission of a physical uplink shared channel PUSCH, including:

It is determined that the user terminal UE uses a preset time domain resource allocation TDRA table for PUSCH transmission, and the preset TDRA table includes repeated transmission times information, so that the UE performs PUSCH repeated transmission based on the repeated transmission times information in the preset TDRA table;

The preset TDRA table is obtained from protocol predefined information or configured through the information of the system information block SIB1.

Sending TDRA table indication information to the UE, so that the UE performs PUSCH repeated transmission based on the preset TDRA table.

In an optional embodiment of the present disclosure, the first reserved bit of the random access response RAR uplink grant UL grant carries the TDRA table indication information, and the value of the first reserved bit is a first preset value.

In an optional embodiment of the present disclosure, the first predefined bit of the second reserved bit of the downlink control information DCI of the scheduled RAR physical downlink shared channel PDSCH is used to carry the TDRA table indication information, and the value of the first predefined bit is The value is the second preset value.

In an optional embodiment of the present disclosure, the N bits of the second reserved bits of the DCI of the RAR PDSCH are used to carry the TDRA table indication information, and the N bits of the second reserved bits of the DCI are related to the medium access control of the UE. The value of the target bit corresponding to the MAC RAR is the third preset value;

The target bit is determined based on the first preset correspondence between the N MAC RARs and the N bits in the second reserved bits of the DCI, the first preset correspondence is obtained from the protocol predefined information, and N is a natural number greater than 1.

In an optional embodiment of the present disclosure, the second predefined bits of other information fields other than the TDRA field in the RAR UL grant are used to carry the TDRA table indication information, and the value of the second predefined bit is the first Four preset values.

In an optional embodiment of the present disclosure, determining that the UE uses a preset TDRA table for PUSCH transmission includes:

If the received preamble sent by the UE belongs to the target preamble group, it is determined that the UE uses the preset TDRA table for PUSCH transmission;

Determine the target RO group corresponding to the preset TDRA table based on the third preset correspondence between each RO group and each TDRA table;

If the preamble sent by the UE on the RO belonging to the target RO group is received, it is determined that the UE uses the preset TDRA table for PUSCH transmission;

Based on the TDRA field in the RAR UL grant and the preset TDRA table, the UE is allocated corresponding time domain resources.

If it is determined that the user terminal UE uses the default TDRA table for PUSCH transmission, the TDRA table indication information is sent to the UE, so that the UE determines to perform PUSCH transmission based on the default TDRA table.

A third aspect An embodiment of the present disclosure provides an apparatus, including a memory, a transceiver, and a processor:

The memory is configured to store the computer program; the transceiver is configured to transmit and receive data under the control of the processor; the processor is configured to read the computer program in the memory and perform the following operations:

Receive the TDRA table indication information sent by the base station;

Receive the RAR UL grant sent by the base station;

In an optional embodiment of the present disclosure, the operations performed by the processor further include:

In a fourth aspect, an embodiment of the present disclosure provides an apparatus, including a memory, a transceiver, and a processor:

It is determined that the user terminal UE uses a preset time domain resource allocation TDRA table to perform PUSCH transmission, and the preset TDRA table includes repeated transmission times information, so that the UE performs PUSCH repeated transmission based on the repeated transmission times information in the preset TDRA table;

In an optional embodiment of the present disclosure, the first reserved bit included in the corresponding RAR uplink grant UL grant for random access is used to carry the TDRA table indication information, and the value of the first reserved bit is a first preset value.

In a fifth aspect, an embodiment of the present disclosure provides a physical uplink shared channel PUSCH repeated transmission device, including:

a first TRDA determination unit, configured to determine to use a preset TDRA table for PUSCH transmission, where the preset TDRA table contains information on the number of times of repeated transmission;

a repeated transmission unit, configured to perform PUSCH repeated transmission based on the repeated transmission times information in the preset TDRA table;

In a sixth aspect, an embodiment of the present disclosure provides a physical uplink shared channel PUSCH retransmission apparatus, including:

The second TDRA determination unit determines that the user terminal UE uses a preset time domain resource allocation TDRA table to perform PUSCH transmission, and the preset TDRA table includes information on the number of repeated transmissions, so that the UE is based on the information on the number of repeated transmissions in the preset TDRA table, Perform PUSCH repeated transmission;

In a seventh aspect, an embodiment of the present disclosure provides a processor-readable storage medium, wherein the processor-readable storage medium stores a computer program, and the computer program is used to cause the processor to execute the first aspect or the second aspect of the claim. The method provided by any embodiment.

The beneficial effects brought by the technical solutions provided by the present disclosure are:

In addition to the default TDRA table of the existing protocol, a preset TDRA table containing repeated transmission times information is set. When the UE determines to use the preset TDRA table, it can perform PUSCH based on the repeated transmission times information in the preset TDRA table. For repeated transmission, due to the preset TDRA table settings in this scheme, the flexibility of resource allocation in this repeated transmission scheme is high, and it is applicable to many types of terminals.

Description of drawings

In order to illustrate the technical solutions in the embodiments of the present disclosure more clearly, the following briefly introduces the accompanying drawings that are required to be used in the description of the embodiments of the present disclosure.

1 is a schematic flowchart of a method for repeated transmission of a physical uplink shared channel PUSCH according to an embodiment of the present disclosure;

2 is a schematic flowchart of another physical uplink shared channel PUSCH retransmission method provided by an embodiment of the present disclosure;

FIG. 3 is a schematic structural diagram of a device according to an embodiment of the present disclosure;

FIG. 4 is a schematic structural diagram of another apparatus provided by an embodiment of the present disclosure;

FIG. 5 is a structural block diagram of a physical uplink shared channel PUSCH repeated transmission device according to an embodiment of the present disclosure;

FIG. 6 is a structural block diagram of another apparatus for repeated transmission of a physical uplink shared channel PUSCH according to an embodiment of the present disclosure.

Detailed ways

Embodiments of the present disclosure are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present disclosure, but not to be construed as a limitation of the present disclosure.

It will be understood by those skilled in the art that the singular forms "a", "an", "the" and "the" as used herein can include the plural forms as well, unless expressly stated otherwise. It should be further understood that the word "comprising" used in the specification of the present disclosure refers to the presence of the stated features, integers, steps, operations, elements and/or components, but does not preclude the presence or addition of one or more other features, Integers, steps, operations, elements, components and/or groups thereof. It will be understood that when we refer to an element as being "connected" or "coupled" to another element, it can be directly connected or coupled to the other element or intervening elements may also be present. Furthermore, "connected" or "coupled" as used herein may include wirelessly connected or wirelessly coupled. As used herein, the term "and/or" includes all or any element and all combination of one or more of the associated listed items.

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

First, introduce and explain several terms involved in the present disclosure:

5G NR 5th Generation New RAT, the new air interface of the fifth generation mobile communication system;

SI study item, research project;

PUSCH Physical Uplink Shared Channel, physical uplink shared channel;

Msg3 Message 3;

MAC Media Access Control, media access control;

RAR Random Access Response, random access response;

SSB Synchronization Signal Block, synchronization signal block;

RACH Random Access Channel, random access channel;

SIB System Information Block, system information block;

FDD Frequency Division Duplex, frequency division duplex;

TDD Time Division Duplex, time division duplex;

FR Frequency Range, frequency range;

SCS Sub-Carrier Spacing, subcarrier spacing;

RV Redundancy Version, redundant version;

DCI Downlink Control Information, downlink control information;

RO RACH Occasion, random access timing;

TDRA Time Domain Resource Allocation, time domain resource allocation;

MCS Modulation and Coding Scheme, modulation and coding strategy;

TPC Transmit Power Control, power control;

CSI Channel State Information, channel state information;

LSB Least Significant Bit, the least significant bit;

MSB Most Significant Bit, the most significant bit;

OFDM Orthogonal Frequency Division Multiplexing, namely Orthogonal Frequency Division Multiplexing.

The initial transmission of Msg3 PUSCH is scheduled through the UL grant carried in the RAR. The indication information contained in the UL grant is shown in Table 1:

Table 1

The user terminal UE determines the time domain resource allocation of the Msg3 PUSCH according to the TDRA indication field in the RAR UL grant. The current protocol does not support repeated transmission of Msg3 PUSCH. In the 3GPP Rel-17 project approval document, support for the use of repeated transmission type A (type A repetition) for Msg3 PUSCH will be studied in the work item stage. At the RAN1#104e meeting, the related protocol instructing the repeated transmission of Msg3 PUSCH was passed, and the technical details need to be further studied. Specifically, in the above-mentioned method, if the reserved bits in the UL grant are used for indication, the available bits (bits) are very limited, and only 1 bit can be used for the indication of the number of repetitions, thus greatly limiting the indication of the number of repetitions flexibility; if indicated by the TDRA field in the UL grant, the flexibility of time-domain resource allocation will be limited. If the DCI format (downlink control information format) or SIB1 is used for the indication, the indication will be cell-specific (cell-specific), which cannot meet the repeated transmission requirements of the Msg3 PUSCH of different terminals. To solve the above problems, the embodiments of the present disclosure provide a PUSCH repeated transmission scheme, which will be described in detail below.

FIG. 1 is a schematic flowchart of a method for repeated transmission of a physical uplink shared channel (PUSCH) provided by an embodiment of the present disclosure. The execution body of the method may be a UE. As shown in FIG. 1 , the method may include:

Step S101, it is determined that a preset TDRA table is used for PUSCH transmission, and the preset TDRA table includes information on the number of repeated transmissions.

Wherein, the scheduling requirements of the UE in the embodiments of the present disclosure are different from those of conventional UEs, such as repeated transmission requirements, time domain resource allocation combination requirements, and the like. In the embodiment of the present disclosure, the UE may be a coverage enhancement terminal, normal CP, and Msg3 PUSCH transmission is taken as an example.

The UE can use two TDRA tables for PUSCH transmission, one is the default TDRA table that has been set in the existing protocol, and the default TDRA table indicates various time domain information for the UE to perform initial transmission, The UE performs initial transmission based on the default TDRA table; another preset TDRA table is set in the solution of the embodiment of the present disclosure, and the preset TDRA table includes various time domain information and The repeated transmission times information, based on the preset TDRA table, the UE can perform repeated transmission. Further, the UE may acquire the preset TDRA table from protocol predefined information or system information block SIB1 information sent by the base station.

Step S102, based on the repeated transmission times information in the preset TDRA table, perform repeated PUSCH transmission.

Specifically, firstly, the UE can obtain the preset TDRA table from the predefined information of the protocol, or receive the preset TDRA table configured by the base station through the SIB1 information, and then the UE can determine that the adopted TDRA table is the preset TDRA table by displaying or displaying. The TDRA table or the default TDRA table, if it is determined to use the preset TDRA table, the UE performs PUSCH repeated transmission based on the time domain information and repeated transmission times information in the preset TDRA table; The time domain information in the TDRA table is used for PUSCH transmission.

The specific situation in which the UE may determine that the adopted TDRA table is a preset TDRA table or a default TDRA table by displaying or displaying will be described in detail later.

It should be noted that the solutions of the embodiments of the present disclosure may be used for repeated transmission of the PUSCH of Msg3, and may also be used for repeated transmission of other information, and the embodiments of the present disclosure are not limited thereto.

In the solution provided by the embodiments of the present disclosure, in addition to the default TDRA table of the existing protocol, a preset TDRA table containing repeated transmission times information is set. When the UE determines to use the preset TDRA table, it can be based on the preset TDRA table. The repetition transmission times information in the PUSCH repetition transmission is performed. Due to the preset TDRA table settings in this scheme, the resource allocation flexibility in this repetition transmission scheme is high, and it is suitable for many types of terminals.

In the solution of the embodiment of the present disclosure, there are two ways for the terminal to determine whether to use the predicted TDRA table for PUSCH transmission. One is to determine according to the TDRA indication information sent by the base station, that is, the display mode. way to be determined. These two methods will be described in detail below.

Receive the TDRA table indication information sent by the base station;

Specifically, the TDRA table indication information may be used to instruct the terminal to use different TDRA tables for PUSCH transmission. Specifically, if the UE receives the TDRA table indication information indicating the preset TDRA table sent by the base station, it determines to use the preset TDRA table (hereinafter also referred to as the first TDRA table) for PUSCH transmission, that is, the first TDRA table is used for PUSCH transmission. The PUSCH is repeatedly transmitted. If the UE receives the TDRA table indication information indicating the default TDRA table sent by the base station, it determines to use the default TDRA table (hereinafter also referred to as the second TDRA table) for PUSCH transmission.

Wherein, the first reserved bits (reserved bits) in the RAR UL grant contain only one bit (bit), then, the first reserved bit is used to carry the TDRA table indication information, and the TDRA is determined by the value of the first reserved bit The table indication information indicates which TDRA table is, that is, the value of the first reserved bit indicates whether the UE adopts the first TDRA table or the second TDRA table.

Specifically, if the value of the first reserved bit is 0 (ie, the first preset value), the TDRA table indication information indicates the first TDRA table, and the UE determines to use the first TDRA table for PUSCH upon receiving the TDRA table indication information. Repeated transmission, if the value of the first reserved bit is 1, the TDRA table indication information indicates the second TDRA table, and the UE determines to use the second TDRA table for PUSCH transmission upon receiving the TDRA table indication information.

It can be understood that the first preset value can also be 1, then correspondingly, if the value of the first reserved bit is 1, the TDRA table indication information indicates the first TDRA table indication information, if the value of the first reserved bit is 1. 0, the TDRA table indication information indicates the second TDRA table, that is, whether the first preset value is 0 or 1, can be set according to actual requirements.

Wherein, the second reserved bit in the DCI of the RAR PDSCH contains a plurality of bits, and one bit in the second reserved bit, that is, the first predefined bit, carries the TDRA table indication information, and is obtained through the first predefined bit. The value of the TDRA table indication information indicates which TDRA table is indicated, that is, the value of the first predefined bit indicates whether the UE adopts the first TDRA table or the second TDRA table.

Specifically, if the value of the first predefined bit is 0 (ie, the second preset value), the TDRA table indication information indicates the first TDRA table, and the UE determines to use the first TDRA table upon receiving the TDRA table indication information Perform repeated PUSCH transmission, if the value of the first predefined bit is 1, the TDRA table indication information indicates the second TDRA table, and the UE determines to use the second TDRA table for PUSCH transmission upon receiving the TDRA table indication information.

It can be understood that the second preset value can also be 1, then correspondingly, if the value of the first predefined bit is 1, the TDRA table indication information indicates the first TDRA table, if the value of the first predefined bit is 1. If the value is 0, the TDRA table indication information indicates the second TDRA table, that is, whether the second preset value is 0 or 1, can be set according to actual requirements.

The second reserved bit in the DCI of the RAR PDSCH includes multiple bits, and the multiple bits are used to carry the TDRA table indication information. Specifically, the N MAC RARs of various UEs and the second reserved bits in the RAR PDU are predefined by the protocol. The first preset correspondence includes N bits. For each bit, its value can be used to indicate the Whether the UE of the MAC RAR corresponding to this bit adopts the first TDRA table or the second TDRA table.

Specifically, the UE determines which bit in the second reserved bits it corresponds to according to the first preset correspondence, and the corresponding bit is the target bit. For example, if the MAC RAR of a certain UE corresponds to the second reserved bit the second bit in the bits, then the second bit is the target bit of the UE. If the value of the target bit is 0 (ie, the third preset value), the TDRA table indication information indicates the first TDRA table, and the UE determines to use the first TDRA table for repeated PUSCH transmission after receiving the TDRA table indication information. If the value of the target bit is 1, the TDRA table indication information indicates the second TDRA table, and the UE determines to use the second TDRA table for PUSCH transmission upon receiving the TDRA table indication information.

It can be understood that the third preset value can also be 1, then correspondingly, if the value of the target bit is 1, the TDRA table indication information indicates the first TDRA table, and if the value of the target bit is 0, the TDRA table The indication information indicates the second TDRA table, that is, whether the third preset value is 0 or 1, can be set according to actual requirements.

Wherein, the second predefined bits of other information fields in the RAR UL grant other than the TDRA field are used to carry the TDRA table indication information. For example, the LSB or MSB in the TPC command can be used to carry the TDRA table indication information.

Specifically, if the value of the predefined bit is 0 (ie, the fourth preset value), the TDRA table indication information indicates the first TDRA table, and the UE determines to use the first TDRA table for PUSCH upon receiving the TDRA table indication information. Repeated transmission, if the value of the predefined bit is 1, the TDRA table indication information indicates the second TDRA table, and the UE determines to use the second TDRA table for PUSCH transmission upon receiving the TDRA table indication information.

It can be understood that the fourth preset value can also be 1, then correspondingly, if the value of the predefined bit is 1, the TDRA table indication information indicates the first TDRA table indication information, if the value of the predefined bit is 1. 0, the TDRA table indication information indicates the second TDRA table, that is, whether the fourth preset value is 0 or 1, can be set according to actual requirements.

The UE can send different preambles (preambles), and these preambles can belong to different preamble groups, and each preamble group and the second preamble of each TDRA table can be determined through the SBI1 configuration of the base station or the way predefined in the protocol. Set up a corresponding relationship. Then, the UE determines, according to the preamble group described in the transmitted preamble, that it adopts the TDRA table corresponding to the preamble group.

Specifically, the UE determines the target preamble group corresponding to the TDRA table according to the second preset corresponding relationship, and if the preamble group sent by the UE belongs to the target preamble group, it is determined to use the first TDRA table for PUSCH transmission. If the sent preamble does not belong to the target preamble group, it is determined to use the second TDRA table for PUSCH transmission.

For example, the corresponding relationship between the preamble group and the TDRA table is determined by means of SIB1 configuration or protocol pre-definition. Specifically, it is assumed that the preamble group #1 corresponds to the first TDRA table, and the preamble group #2 corresponds to the second TDRA table. When the UE sends the preamble belonging to the preamble group #1, its corresponding TDRA table is the first TDRA table; when the terminal sends the preamble belonging to the preamble group #2, its corresponding TDRA table is the second TDRA table.

The UE may send preambles on different ROs, these ROs may belong to different RO groups, and the third preset corresponding relationship between the RO group and each TDRA table may be determined through the SBI1 configuration of the base station or the way predefined in the protocol. Then, according to which RO group the UE sends the preamble, the UE determines that it adopts the TDRA table corresponding to the RO group.

Specifically, the UE determines the target pre-RO group corresponding to the TDRA table according to the third preset correspondence. If the UE sends a preamble on the RO belonging to the target RO group, it determines to use the first TDRA table for PUSCH transmission. If the UE sends a preamble on an RO that does not belong to the target RO group, it determines to use the second TDRA table for PUSCH transmission.

For example, the corresponding relationship between the RO group and the TDRA table is determined by means of SIB1 configuration or protocol pre-definition. Specifically, it is assumed that RO group #1 corresponds to the first TDRA table, and RO group #2 corresponds to the second TDRA table. When the UE sends the preamble on the RO belonging to RO group #1, its corresponding TDRA table is the first TDRA table; when the UE sends the preamble on the RO belonging to RO group #2, its corresponding TDRA table is the second TDRA table surface.

Receive the RAR UL grant sent by the base station;

Based on the TDRA domain in the RAR UL grant, determine the corresponding time domain resources and the number of repeated transmissions from the preset TDRA table;

Based on time domain resources and the number of repeated transmissions, PUSCH repeated transmission is performed.

Specifically, if the UE determines to use the first TDRA table, based on the TDRA field in the RAR UL grant, the corresponding time domain resources and the number of repeated transmissions are determined from the preset TDRA table, and based on the time domain resources and the number of repeated transmissions, the PUSCH is repeatedly transmitted. If the UE determines to use the second TDRA table, based on the TDRA field in the RAR UL grant, the corresponding time domain resources are determined from the preset TDRA table, and PUSCH transmission is performed based on the time domain resources.

For example, when the UE uses the first TDRA table to determine the time domain resources of the Msg3 PUSCH, the 4bits TDRA indication field in the UL grant indicates that a row in the second TDRA table (as shown in Table 2) is used to determine the time domain of the Msg3 PUSCH. domain resources.

Table 2

When the first TDRA table is used to determine the time domain resources of the Msg3 PUSCH, the 4bits TDRA indication field in the UL grant indicates that a row in the first TDRA table (as shown in Table 3) is used to determine the time domain resources and the number of repetitions of the Msg3 PUSCH .

table 3

Specifically, it is assumed that the TDRA indication field in the RAR UL grant is 0010 at this time, that is, it indicates the third row in the first TDRA table. Then Msg3 is sent on the corresponding time domain resources according to the information provided in this row. Specifically, starting from the 0th OFDM symbol of the n+jth slot (time slot), it occupies 14 consecutive OFDM symbols, and is Repeat transmission on 4 slots.

It should be noted that the embodiments of the present disclosure do not impose any restrictions on the specific combinations of S, L, K2, and R in Table 3, that is, the first TDRA table, and can be left to the base station to configure according to requirements.

FIG. 2 is a schematic flowchart of another physical uplink shared channel PUSCH retransmission method provided by an embodiment of the present disclosure. The execution body of the method may be a base station. As shown in FIG. 2 , the method may include:

Step S201, it is determined that the user terminal UE uses a preset time domain resource allocation TDRA table to perform PUSCH transmission, and the preset TDRA table contains repeated transmission times information, so that the UE performs PUSCH repetition based on the repeated transmission times information in the preset TDRA table. transmission;

In the solution provided by the embodiments of the present disclosure, in addition to the default TDRA table in the existing protocol, a preset TDRA table containing repeated transmission times information is set. When the base station determines that the UE adopts the preset TDRA table, the UE can be based on the preset TDRA table It is assumed that the repeated transmission times information in the TDRA table is used for PUSCH repeated transmission. Due to the preset TDRA table settings in this scheme, the resource allocation flexibility in this repeated transmission scheme is high, and it is suitable for many terminal types.

In the solution of the embodiment of the present disclosure, there are two ways for the terminal to determine whether to use the preset TDRA table for PUSCH transmission. The TDRA indication information is sent to the UE, and secondly, the determination is based on the way of sending the preamble. In this way, the base station needs to determine the way that the UE sends the preamble. The following will describe in detail the manner in which the base station sends the TDRA indication information to the UE and the manner in which the base station determines that the UE sends the preamble.

In an optional embodiment of the present disclosure, the method may further include:

The TDRA table indication information is sent to the UE, so that the UE performs repeated PUSCH transmission based on the preset TDRA table.

Specifically, if the base station determines that the UE adopts the first TDRA table, it sends the TDRA table indication information indicating the first TDRA table to the UE, and if the base station determines that the UE adopts the second TDRA table, it sends the TDRA table indicating the second TDRA table to the UE. Instructions.

Specifically, the situation in which different bearers are used to carry the indication information of the TDRA table in the above-mentioned embodiments has been described in detail above, and will not be repeated again.

Specifically, in the foregoing several embodiments, the situation of determining the TDRA table used by the UE based on different preamble transmission modes of the UE has been described in detail above, and will not be repeated again.

Specifically, if the UE determines to use the first TDRA table, based on the TDRA field in the RAR UL grant, the corresponding time domain resources and the number of repeated transmissions are determined from the preset TDRA table. If the UE determines to use the second TDRA table, the corresponding time domain resources are determined from the preset TDRA table based on the TDRA field in the RAR UL grant.

FIG. 3 is a schematic structural diagram of an apparatus provided by an embodiment of the present disclosure. As shown in FIG. 3 , the apparatus includes a memory 320, a transceiver 310, a processor 300, and a user interface 330:

The memory 320 is configured to store a computer program; the transceiver 310 is configured to transmit and receive data under the control of the processor; the processor 300 is configured to read the computer program in the memory and perform the following operations:

Receive the TDRA table indication information sent by the base station;

Receive the RAR UL grant sent by the base station;

Further, the transceiver 310 is configured to receive and transmit data under the control of the processor 300 .

Wherein, in FIG. 3 , the bus architecture may include any number of interconnected buses and bridges, specifically, one or more processors 300 represented by processor 300 and various circuits of memory 320 represented by memory 320 are linked together. The bus architecture may also link together various other circuits, such as peripherals, voltage regulators, and power management circuits, which are well known in the art and, therefore, will not be described further herein. The bus interface provides the interface. Transceiver 310 may be a number of elements, including a transmitter and a receiver, providing means for communicating with various other devices over transmission media including wireless channels, wired channels, fiber optic cables, and the like Transmission medium. For different user equipments, the user interface 330 may also be an interface capable of externally connecting the required equipment, and the connected equipment includes but is not limited to a keypad, a display, a speaker, a microphone, a joystick, and the like.

The processor 300 is responsible for managing the bus architecture and general processing, and the memory 320 may store data used by the processor 300 in performing operations.

Optionally, the processor 300 may be a CPU (central processor), an ASIC (Application Specific Integrated Circuit, an application-specific integrated circuit), an FPGA (Field-Programmable Gate Array, a field programmable gate array) or a CPLD (Complex Programmable Logic Device) , a complex programmable logic device), the processor 300 may also adopt a multi-core architecture.

The processor 300 is configured to execute any method provided by the embodiments of the present disclosure according to the obtained executable instructions by invoking the computer program stored in the memory 320 . The processor 300 and the memory 320 may also be arranged physically separately.

FIG. 4 is a schematic structural diagram of another apparatus provided by an embodiment of the present disclosure. As shown in FIG. 4 , the apparatus may include: a memory 420, a transceiver 410, and a processor 400:

The memory 420 is configured to store a computer program; the transceiver 410 is configured to transmit and receive data under the control of the processor; the processor 400 is configured to read the computer program in the memory and perform the following operations:

Further, the transceiver 410 is configured to receive and transmit data under the control of the processor 400 .

Wherein, in FIG. 4 , the bus architecture may include any number of interconnected buses and bridges, specifically, one or more processors 400 represented by processor 400 and various circuits of memory 420 represented by memory 420 are linked together. The bus architecture may also link together various other circuits, such as peripherals, voltage regulators, and power management circuits, which are well known in the art and, therefore, will not be described further herein. The bus interface provides the interface. Transceiver 410 may be a number of elements, including a transmitter and a receiver, that provide means for communicating with various other devices over transmission media including wireless channels, wired channels, fiber optic cables, and the like. The processor 400 is responsible for managing the bus architecture and general processing, and the memory 420 may store data used by the processor 400 in performing operations.

The processor 400 may be a central processor (CPU), an application specific integrated circuit (ASIC), a field programmable gate array (FPGA) or a complex programmable logic device (Complex Programmable Logic Device). , CPLD), the processor 400 may also adopt a multi-core architecture.

It should be noted here that the above-mentioned device provided by the embodiment of the present invention can realize all the method steps realized by the above-mentioned method embodiment, and can achieve the same technical effect, and the same as the method embodiment in this embodiment is not repeated here. The parts and beneficial effects will be described in detail.

FIG. 5 is a structural block diagram of a physical uplink shared channel PUSCH repeated transmission device according to an embodiment of the present disclosure. As shown in FIG. 5 , the device 500 may include: a first TRDA determination unit 501 and a repeated transmission unit 502, wherein:

The first TRDA determination unit 501 is configured to determine to use a preset TDRA table for PUSCH transmission, where the preset TDRA table includes information on the number of repeated transmissions;

The repeated transmission unit 502 is configured to perform repeated transmission of PUSCH based on the repeated transmission times information in the preset TDRA table;

Wherein, the preset TDRA table is obtained from protocol predefined information or system information block SIB1 information sent by the base station.

FIG. 6 is a structural block diagram of another physical uplink shared channel PUSCH retransmission apparatus provided by an embodiment of the present disclosure. As shown in FIG. 6 , the apparatus 600 may include: a second TDRA determination unit 601, wherein:

The second TDRA determining unit 601 determines that the user terminal UE uses a preset time domain resource allocation TDRA table for PUSCH transmission. information on the number of repeated transmissions to perform PUSCH repeated transmission;

Wherein, the preset TDRA table is obtained from protocol predefined information or configured through system information block SIB1 information.

It should be noted that the division of units in the embodiments of the present disclosure is schematic, and is only a logical function division, and other division methods may be used in actual implementation. In addition, each functional unit in each embodiment of the present disclosure may be integrated into one processing unit, or each unit may exist physically alone, or two or more units may be integrated into one unit. The above-mentioned integrated units may be implemented in the form of hardware, or may be implemented in the form of software functional units.

If the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it may be stored in a processor-readable storage medium. Based on this understanding, the technical solutions of the present disclosure can be embodied in the form of software products in essence, or the part that contributes to the prior art, or all or part of the technical solutions, and the computer software product is stored in a storage medium , including several instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) or a processor to execute all or part of the steps of the methods described in the various embodiments of the present disclosure. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (Read-Only Memory, ROM), random access memory (Random Access Memory, RAM), magnetic disk or optical disk and other media that can store program codes .

An embodiment of the present disclosure provides a processor-readable storage medium, wherein the processor-readable storage medium stores a computer program, and the computer program is used to cause the processor to execute the method described in the foregoing embodiments.

The processor-readable storage medium can be any available medium or data storage device that can be accessed by a processor, including, but not limited to, magnetic storage (eg, floppy disk, hard disk, magnetic tape, magneto-optical disk (MO), etc.), optical storage (eg, CD, DVD, BD, HVD, etc.), and semiconductor memory (eg, ROM, EPROM, EEPROM, non-volatile memory (NAND FLASH), solid-state disk (SSD)), etc.

The technical solutions provided by the embodiments of the present disclosure may be applicable to various systems, especially 5G systems. For example, the applicable system may be a global system of mobile communication (GSM) system, a code division multiple access (CDMA) system, a wideband code division multiple access (Wideband Code Division Multiple Access, WCDMA) general packet Wireless service (general packet radio service, GPRS) system, long term evolution (long term evolution, LTE) system, LTE frequency division duplex (frequency division duplex, FDD) system, LTE time division duplex (time division duplex, TDD) system, Long term evolution advanced (LTE-A) system, universal mobile telecommunication system (UMTS), worldwide interoperability for microwave access (WiMAX) system, 5G New Radio (New Radio, NR) system, etc. These various systems include terminal equipment and network equipment. The system may also include a core network part, such as an evolved packet system (Evloved Packet System, EPS), a 5G system (5GS), and the like.

The terminal device involved in the embodiments of the present disclosure may be a device that provides voice and/or data connectivity to a user, a handheld device with a wireless connection function, or other processing device connected to a wireless modem. In different systems, the name of the terminal device may be different. For example, in the 5G system, the terminal device may be called user equipment (User Equipment, UE). Wireless terminal equipment can communicate with one or more core networks (Core Network, CN) via a radio access network (Radio Access Network, RAN). "telephone) and computers with mobile terminal equipment, eg portable, pocket-sized, hand-held, computer-built or vehicle-mounted mobile devices, which exchange language and/or data with the radio access network. For example, Personal Communication Service (PCS) phones, cordless phones, Session Initiated Protocol (SIP) phones, Wireless Local Loop (WLL) stations, Personal Digital Assistants (Personal Digital Assistants), PDA) and other devices. Wireless terminal equipment may also be referred to as system, subscriber unit, subscriber station, mobile station, mobile station, remote station, access point , a remote terminal device (remote terminal), an access terminal device (access terminal), a user terminal device (user terminal), a user agent (user agent), and a user device (user device), which are not limited in the embodiments of the present disclosure.

The network device involved in the embodiments of the present disclosure may be a base station, and the base station may include a plurality of cells providing services for the terminal. Depending on the specific application, the base station may also be called an access point, or may be a device in the access network that communicates with wireless terminal equipment through one or more sectors on the air interface, or other names. The network device can be used to exchange received air frames with Internet Protocol (IP) packets, and act as a router between the wireless terminal device and the rest of the access network, which can include the Internet. Protocol (IP) communication network. The network devices may also coordinate attribute management for the air interface. For example, the network device involved in the embodiments of the present disclosure may be a network device (Base Transceiver Station, BTS) in the Global System for Mobile Communications (GSM) or Code Division Multiple Access (Code Division Multiple Access, CDMA). ), it can also be a network device (NodeB) in Wide-band Code Division Multiple Access (WCDMA), or it can be an evolved network device in a long term evolution (LTE) system (evolutional Node B, eNB or e-NodeB), 5G base station (gNB) in 5G network architecture (next generation system), or Home evolved Node B (HeNB), relay node (relay node) , a home base station (femto), a pico base station (pico), etc., which are not limited in the embodiments of the present disclosure. In some network structures, a network device may include a centralized unit (CU) node and a distributed unit (DU) node, and the centralized unit and the distributed unit may also be geographically separated.

One or more antennas can be used between the network device and the terminal device for multi-input multi-output (MIMO) transmission. The MIMO transmission can be single-user MIMO (Single User MIMO, SU-MIMO) or multi-user MIMO. (Multiple User MIMO, MU-MIMO). According to the form and number of root antenna combinations, MIMO transmission can be 2D-MIMO, 3D-MIMO, FD-MIMO, or massive-MIMO, or diversity transmission, precoding transmission, or beamforming transmission.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present disclosure without departing from the spirit and scope of the present disclosure. Thus, provided that these modifications and variations of the present disclosure fall within the scope of the claims of the present disclosure and their equivalents, the present disclosure is also intended to cover such modifications and variations.

Claims

A method for repeated transmission of physical uplink shared channel PUSCH, the method includes:

It is determined that a preset TDRA table is used for PUSCH transmission, and the preset TDRA table includes information on the number of repeated transmissions;

Perform PUSCH repeated transmission based on the repeated transmission times information in the preset TDRA table;

Wherein, the preset TDRA table is obtained from protocol predefined information or system information block SIB1 information sent by the base station.
The method according to claim 1, wherein the determining to use the preset TDRA table for PUSCH transmission comprises:

Receive the TDRA table indication information sent by the base station;

Based on the TDRA table indication information, it is determined whether to use the preset TDRA table for PUSCH transmission.
The method according to claim 2, wherein the TDRA table indication information is carried by the first reserved bit included in the UL grant corresponding to the RAR uplink grant for random access, then based on the TDRA table indication information, it is determined to use the pre-reserved bit. Let the TDRA table for PUSCH transmission, including:

If the value of the first reserved bit is a first preset value, it is determined to use the preset TDRA table for PUSCH transmission.
The method according to claim 2, wherein the first predefined bit of the second reserved bit of the downlink control information DCI of the scheduled RAR physical downlink shared channel (PDSCH) is used to carry the TDRA table indication information, then the indication information based on the TDRA table information, determine to use the preset TDRA table for PUSCH transmission, including:

If the value of the first predefined bit is a second preset value, it is determined to use the preset TDRA table for PUSCH transmission.
The method according to claim 2, wherein N bits of the second reserved bits of the DCI of the RAR PDSCH are used to carry the TDRA table indication information, then based on the TDRA table indication information, it is determined to use the preset TDRA table Perform PUSCH transmissions, including:

Based on the first preset correspondence between the N MAC RARs and the N bits in the second reserved bits of the DCI, determine the N bits of the second reserved bits of the DCI and the N users The target bit corresponding to the MAC RAR of the terminal UE, wherein N is a natural number greater than 1;

If the value of the target bit is a third preset value, it is determined to use the preset TDRA table for PUSCH transmission;

Wherein, the first preset correspondence is obtained from the protocol predefined information.
The method according to claim 2, wherein the TDRA table indication information is carried by the second predefined bits of other information fields other than the TDRA field in the RAR UL grant, then based on the TDRA table indication information, determine Use the preset TDRA table for PUSCH transmission, including:

If the value of the second predefined bit is a fourth preset value, it is determined to use the preset TDRA table for PUSCH transmission.
The method according to claim 1, wherein the determining to use the preset TDRA table for PUSCH transmission comprises:

determining a target preamble group corresponding to the preset TDRA table based on the second preset correspondence between each preamble group and each TDRA table;

If the preamble sent by the current UE belongs to the target preamble group, determine to use the preset TDRA table for PUSCH transmission;

Wherein, the second preset corresponding relationship is obtained from protocol predefined information or the SIB1 information.
The method according to claim 1, wherein the determining to use the preset TDRA table for PUSCH transmission comprises:

determining a target RO group corresponding to the preset TDRA table based on a third preset correspondence between each random access opportunity RO group and each TDRA table;

If the current UE sends the preamble on the RO belonging to the target RO group, it is determined to use the preset TDRA table for PUSCH transmission;

Wherein, the third preset correspondence is obtained from the protocol predefined information or the SIB1 information.
The method according to claim 1, wherein the performing repeated transmission of PUSCH based on the repeated transmission times information in the preset TDRA table comprises:

Receive the RAR UL grant sent by the base station;

Based on the TDRA domain in the RAR UL grant, determine the corresponding time domain resource and the number of repeated transmissions from the preset TDRA table;

Based on the time domain resource and the number of repeated transmissions, PUSCH repeated transmission is performed.
The method of claim 2, further comprising:

If it is determined not to use the preset TDRA table for PUSCH transmission based on the TDRA table indication information, then it is determined to use the default TDRA table for PUSCH transmission.
A physical uplink shared channel PUSCH retransmission method, the method comprising:

It is determined that the user terminal UE uses a preset time domain resource allocation TDRA table to perform PUSCH transmission, and the preset TDRA table includes repeated transmission times information, so that the UE is based on the repeated transmission times information in the preset TDRA table, Perform PUSCH repeated transmission;

Wherein, the preset TDRA table is obtained from protocol predefined information or configured through system information block SIB1 information.
The method of claim 11, further comprising:

Sending TDRA table indication information to the UE, so that the UE performs repeated PUSCH transmission based on the preset TDRA table.
The method according to claim 12, wherein a first reserved bit of a random access response RAR uplink grant UL grant is used to carry the TDRA table indication information, and the value of the first reserved bit is a first preset value .
The method according to claim 12, wherein the first predefined bit of the second reserved bit of the downlink control information DCI of the scheduled RAR physical downlink shared channel (PDSCH) is used to carry the TDRA table indication information, and the first predefined bit The value of the bit is the second preset value.
The method according to claim 12, wherein the N bits of the second reserved bits of the DCI of the RAR PDSCH are used to carry the TDRA table indication information, and the N bits of the second reserved bits of the DCI are the same as those of the UE. The value of the target bit corresponding to the media access control MAC RAR is the third preset value;

The target bit is determined based on the first preset correspondence between the N MAC RARs and the N bits in the second reserved bits of the DCI, and the first preset correspondence is obtained from the protocol predefined information , where N is a natural number greater than 1.
The method according to claim 12, wherein the TDRA table indication information is carried by a second predefined bit of other information fields in the RAR UL grant except the TDRA field, and the value of the second predefined bit is The value is the fourth preset value.
The method according to claim 11, wherein the determining that the UE uses the preset TDRA table for PUSCH transmission comprises:

determining a target preamble group corresponding to the preset TDRA table based on the second preset correspondence between each preamble group and each TDRA table;

If the received preamble sent by the UE belongs to the target preamble group, determine that the UE uses the preset TDRA table for PUSCH transmission;

Wherein, the second preset corresponding relationship is obtained from protocol predefined information or the SIB1 information.
The method according to claim 11, wherein the determining that the UE uses the preset TDRA table for PUSCH transmission comprises:

Determine the target RO group corresponding to the preset TDRA table based on the third preset correspondence between each RO group and each TDRA table;

If the preamble sent by the UE on the RO belonging to the target RO group is received, determine that the UE uses the preset TDRA table for PUSCH transmission;

Wherein, the third preset correspondence is obtained from the protocol predefined information or the SIB1 information.
The method of claim 11, further comprising:

Based on the TDRA domain in the RAR UL grant and the preset TDRA table, the UE is allocated corresponding time domain resources.
The method of claim 12, further comprising:

If it is determined that the user terminal UE uses the default TDRA table for PUSCH transmission, the TDRA table indication information is sent to the UE, so that the UE determines to perform PUSCH transmission based on the default TDRA table.
An apparatus comprising a memory, a transceiver, and a processor:

a memory configured to store a computer program; a transceiver configured to transmit and receive data under the control of the processor; a processor configured to read the computer program in the memory and perform the following operations:

It is determined that a preset TDRA table is used for PUSCH transmission, and the preset TDRA table includes information on the number of repeated transmissions;

Perform PUSCH repeated transmission based on the repeated transmission times information in the preset TDRA table;

Wherein, the preset TDRA table is obtained from protocol predefined information or system information block SIB1 information sent by the base station.
The apparatus according to claim 21, wherein the determining to use the preset TDRA table for PUSCH transmission comprises:

Receive the TDRA table indication information sent by the base station;

Based on the TDRA table indication information, it is determined whether to use the preset TDRA table for PUSCH transmission.
The apparatus according to claim 22, wherein the TDRA table indication information is carried by the first reserved bit included in the UL grant corresponding to the RAR uplink grant for random access, then based on the TDRA table indication information, it is determined to use the pre-reserved bit. Let the TDRA table for PUSCH transmission, including:

If the value of the first reserved bit is a first preset value, it is determined to use the preset TDRA table for PUSCH transmission.
The apparatus according to claim 22, wherein the first predefined bit of the second reserved bit of the downlink control information DCI of the scheduled RAR physical downlink shared channel (PDSCH) is used to carry the TDRA table indication information, then the indication information based on the TDRA table information, determine to use the preset TDRA table for PUSCH transmission, including:

If the value of the first predefined bit is a second preset value, it is determined to use the preset TDRA table for PUSCH transmission.
The apparatus according to claim 22, wherein N bits of the second reserved bits of the DCI of the RAR PDSCH are used to carry the TDRA table indication information, then it is determined to use the preset TDRA table based on the TDRA table indication information Perform PUSCH transmissions, including:

Based on the first preset correspondence between the N MAC RARs and the N bits in the second reserved bits of the DCI, determine the N bits of the second reserved bits of the DCI and the N users The target bit corresponding to the MAC RAR of the terminal UE, wherein N is a natural number greater than 1;

If the value of the target bit is a third preset value, it is determined to use the preset TDRA table for PUSCH transmission;

Wherein, the first preset correspondence is obtained from the protocol predefined information.
The apparatus according to claim 22, wherein the TDRA table indication information is carried by the second predefined bits of other information fields in the RAR UL grant except the TDRA field, then based on the TDRA table indication information, determine Use the preset TDRA table for PUSCH transmission, including:

If the value of the second predefined bit is a fourth preset value, it is determined to use the preset TDRA table for PUSCH transmission.
The apparatus according to claim 21, wherein the determining to use the preset TDRA table for PUSCH transmission comprises:

determining a target preamble group corresponding to the preset TDRA table based on the second preset correspondence between each preamble group and each TDRA table;

If the preamble sent by the current UE belongs to the target preamble group, determine to use the preset TDRA table for PUSCH transmission;

Wherein, the second preset corresponding relationship is obtained from protocol predefined information or the SIB1 information.
The apparatus according to claim 21, wherein the determining to use the preset TDRA table for PUSCH transmission comprises:

determining a target RO group corresponding to the preset TDRA table based on a third preset correspondence between each random access opportunity RO group and each TDRA table;

If the current UE sends the preamble on the RO belonging to the target RO group, it is determined to use the preset TDRA table for PUSCH transmission;

Wherein, the third preset correspondence is obtained from the protocol predefined information or the SIB1 information.
The apparatus according to claim 21, wherein the performing repeated transmission of PUSCH based on the repeated transmission times information in the preset TDRA table comprises:

receiving the RAR UL grant sent by the base station;

Based on the TDRA domain in the RAR UL grant, determine the corresponding time domain resource and the number of repeated transmissions from the preset TDRA table;

Based on the time domain resource and the number of repeated transmissions, PUSCH repeated transmission is performed.
The apparatus of claim 22, wherein the processor performs operations further comprising:

If it is determined not to use the preset TDRA table for PUSCH transmission based on the TDRA table indication information, then it is determined to use the default TDRA table for PUSCH transmission.
An apparatus comprising a memory, a transceiver, and a processor:

a memory configured to store a computer program; a transceiver configured to transmit and receive data under the control of the processor; a processor configured to read the computer program in the memory and perform the following operations:

It is determined that the user terminal UE uses a preset time domain resource allocation TDRA table to perform PUSCH transmission, and the preset TDRA table includes repeated transmission times information, so that the UE is based on the repeated transmission times information in the preset TDRA table, Perform PUSCH repeated transmission;

Wherein, the preset TDRA table is obtained from protocol predefined information or configured through system information block SIB1 information.
The apparatus of claim 31, wherein the processor performs operations further comprising:

Sending TDRA table indication information to the UE, so that the UE performs repeated PUSCH transmission based on the preset TDRA table.
The apparatus according to claim 32, wherein the TDRA table indication information is carried by a first reserved bit included in a corresponding RAR uplink grant UL grant for random access, and the value of the first reserved bit is the first reserved bit set value.
The apparatus according to claim 32, wherein the first predefined bit of the second reserved bit of the downlink control information DCI of the scheduled RAR physical downlink shared channel (PDSCH) is used to carry the TDRA table indication information, and the first predefined bit The value of the bit is the second preset value.
The apparatus according to claim 32, wherein the N bits of the second reserved bits of the DCI of the RAR PDSCH are used to carry the TDRA table indication information, and the N bits of the second reserved bits of the DCI are the same as those of the UE. The value of the target bit corresponding to the media access control MAC RAR is the third preset value;

The target bit is determined based on the first preset correspondence between the N MAC RARs and the N bits in the second reserved bits of the DCI, and the first preset correspondence is obtained from the protocol predefined information , where N is a natural number greater than 1.
The apparatus according to claim 32, wherein the TDRA table indication information is carried by a second predefined bit of other information fields in the RAR UL grant except the TDRA field, and the value of the second predefined bit is The value is the fourth preset value.
The apparatus according to claim 31, wherein the determining that the UE uses the preset TDRA table for PUSCH transmission comprises:

determining a target preamble group corresponding to the preset TDRA table based on the second preset correspondence between each preamble group and each TDRA table;

If the received preamble sent by the UE belongs to the target preamble group, determine that the UE uses the preset TDRA table for PUSCH transmission;

Wherein, the second preset corresponding relationship is obtained from protocol predefined information or the SIB1 information.
The apparatus according to claim 31, wherein the determining that the UE uses the preset TDRA table for PUSCH transmission comprises:

Based on the third preset correspondence between each RO group and each TDRA table, determine the target RO group corresponding to the preset TDRA table;

If the preamble sent by the UE on the RO belonging to the target RO group is received, determine that the UE uses the preset TDRA table to perform PUSCH transmission;

Wherein, the third preset correspondence is obtained from the protocol predefined information or the SIB1 information.
The apparatus of claim 31, wherein the processor performs operations further comprising:

Based on the TDRA domain in the RAR UL grant and the preset TDRA table, the UE is allocated corresponding time domain resources.
The apparatus of claim 32, wherein the processor performs operations further comprising:

If it is determined that the user terminal UE uses the default TDRA table for PUSCH transmission, the TDRA table indication information is sent to the UE, so that the UE determines to perform PUSCH transmission based on the default TDRA table.
A physical uplink shared channel PUSCH repeated transmission device, the device includes:

a first TRDA determination unit, configured to determine to use a preset TDRA table for PUSCH transmission, where the preset TDRA table includes information on the number of repeated transmissions;

a repeated transmission unit, configured to perform repeated transmission of the PUSCH based on the repeated transmission times information in the preset TDRA table;

Wherein, the preset TDRA table is obtained from protocol predefined information or system information block SIB1 information sent by the base station.
A physical uplink shared channel PUSCH retransmission device, the device comprising:

The second TDRA determination unit determines that the user terminal UE uses a preset time domain resource allocation TDRA table to perform PUSCH transmission, and the preset TDRA table includes information on the number of repeated transmissions, so that the UE can perform PUSCH transmission based on the preset TDRA table. information on the number of repeated transmissions to perform PUSCH repeated transmission;

Wherein, the preset TDRA table is obtained from protocol predefined information or configured through system information block SIB1 information.
A processor-readable storage medium storing a computer program for causing the processor to perform the method of any one of claims 1 to 20.