CN110798290B - PUCCH resource transmission method, terminal and readable medium - Google Patents
PUCCH resource transmission method, terminal and readable medium Download PDFInfo
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- CN110798290B CN110798290B CN201810868005.4A CN201810868005A CN110798290B CN 110798290 B CN110798290 B CN 110798290B CN 201810868005 A CN201810868005 A CN 201810868005A CN 110798290 B CN110798290 B CN 110798290B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/003—Arrangements for allocating sub-channels of the transmission path
- H04L5/0053—Allocation of signaling, i.e. of overhead other than pilot signals
- H04L5/0055—Physical resource allocation for ACK/NACK
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
- H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
- H04L1/1607—Details of the supervisory signal
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
- H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
- H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
- H04L1/1812—Hybrid protocols; Hybrid automatic repeat request [HARQ]
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/003—Arrangements for allocating sub-channels of the transmission path
- H04L5/0053—Allocation of signaling, i.e. of overhead other than pilot signals
Abstract
A method, a terminal and a readable medium for transmitting PUCCH resources are provided, wherein the method for transmitting the PUCCH resources comprises the following steps: receiving indication information sent by a base station, wherein the indication information is used for indicating whether to allow reselection of PUCCH resources corresponding to SR information or PUCCH resources corresponding to HRAQ-ACK information; and based on the indication information, when the selection of the PUCCH resource corresponding to the SR information or the PUCCH resource corresponding to the HRAQ-ACK information is not allowed to be reselected, selecting the PUCCH resource corresponding to the SR information and sending the selected PUCCH resource, or selecting the PUCCH resource corresponding to the HARQ-ACK information and sending the selected PUCCH resource. By applying the scheme, the transmission delay of the SR information or the HARQ-ACK information can be reduced, and the user experience of the delay sensitive service is improved.
Description
Technical Field
The embodiment of the invention relates to the field of communication, in particular to a PUCCH resource sending method, a terminal and a readable medium.
Background
In a New Radio (NR) system, a Radio frame has a time domain length of 10ms, and each Radio frame is divided into 10 subframes of the same size and length of 1ms, which are spaced at different sub-carrier intervals, so that each subframe may include a plurality of slots. Each slot is formed of a certain number of symbols, and the number of symbols is determined by a Cyclic Prefix (CP) type.
A Physical Uplink Control Channel (PUCCH) is a Physical Channel of an Uplink in the NR system, and is used to carry Uplink Control Information (UCI). The purpose of setting the PUCCH is to transfer control information of L1/L2 using the PUCCH when a User Equipment (UE) is not scheduled, that is, when no Uplink Shared Channel (UL-SCH) resource is allocated, including: channel status reports, such as Precoding Matrix Indicator (PMI) and Channel Quality Indicator (CQI), etc., HARQ ACK/NACK acknowledgement and Scheduling Request (SR). The PUCCH supports multiple transmission formats, including: PUCCH format 0, PUCCH format 1, PUCCH format 2, PUCCH format 3, and PUCCH format 4.
In the existing technical solution, the NR system high layer may configure PUCCH format 0 and PUCCH format 1 for transmitting SR information, and all PUCCH formats are used for transmitting HARQ-ACK (positive feedback acknowledgement) information. When the PUCCH resource corresponding to SR information or PUCCH resource corresponding to HARQ-ACK information overlaps or partially overlaps with other PUCCH/PUSCH resources in time domain, the NR system specifies the following multiplexing principle: 1. when SR PUCCH format 0 (i.e., PUCCH format 0 corresponding to SR information) overlaps HARQ-ACK PUCCH format 1 (i.e., PUCCH format 0 corresponding to HARQ-ACK information), only the PUCCH resource corresponding to HARQ-ACK information is transmitted, and the PUCCH resource corresponding to SR information is not transmitted. 2. When the SR PUCCH format 0 is overlapped with the HARQ-ACK PUCCH format 3/4, the corresponding PUCCH resource is selected according to the number of bits of the UCI, and the PUCCH resource is delayed to be sent.
In the existing implementation scheme, when a PUCCH resource corresponding to SR information is not transmitted or transmission of the PUCCH resource is delayed, transmission delay of the SR information or HARQ-ACK information may be increased. For SR information or HARQ-ACK information of delay sensitive services, scheduling delay is increased, thereby affecting user experience of the UE.
Disclosure of Invention
The technical problem solved by the embodiment of the invention is how to reduce the transmission delay of the SR information or the HARQ-ACK information so as to improve the user experience of the delay sensitive service.
In order to solve the above technical problem, an embodiment of the present invention provides a method for sending PUCCH resources, including: receiving indication information sent by a base station, wherein the indication information is used for indicating whether to allow reselection of PUCCH resources corresponding to SR information or PUCCH resources corresponding to HRAQ-ACK information; and based on the indication information, when the PUCCH resource corresponding to the SR information or the PUCCH resource corresponding to the HRAQ-ACK information is not allowed to be reselected, selecting the PUCCH resource corresponding to the SR information and sending the selected PUCCH resource, or selecting the PUCCH resource corresponding to the HARQ-ACK information and sending the selected PUCCH resource.
Optionally, the receiving the indication information sent by the base station includes: receiving configuration information sent by a base station through a high-level signaling, wherein the configuration information is used for indicating PUCCH resources corresponding to SR information and comprises the indication information; and acquiring the indication message based on the configuration information.
Optionally, the selecting and sending PUCCH resources corresponding to SR information includes: and when the PUCCH resource corresponding to the SR information is overlapped with other PUCCH/PUSCH resources and the SR is a positive scheduling request, selecting the PUCCH resource corresponding to the SR information and transmitting the PUCCH resource, and discarding the other PUCCH/PUSCH resources.
Optionally, the selecting and sending PUCCH resources corresponding to HARQ-ACK information includes: and when the PUCCH resources corresponding to the HRAQ-ACK information are overlapped with other PUCCH/PUSCH resources and the PUCCH resources corresponding to the HRAQ-ACK information are acquired through high-level signaling, selecting the PUCCH resources corresponding to the HRAQ-ACK and transmitting the PUCCH resources, and discarding the other PUCCH/PUSCH resources.
Optionally, the selecting and sending PUCCH resources corresponding to SR information includes: and when the PUCCH resources corresponding to the SR information are overlapped with the PUCCH resources corresponding to the HRAQ-ACK information and the SR is a positive scheduling request, selecting the PUCCH resources corresponding to the SR information and sending the PUCCH resources, and discarding the PUCCH resources corresponding to the HRAQ-ACK information.
Optionally, the overlapping is a partial overlapping of time domain resources or a complete overlapping of time domain resources.
An embodiment of the present invention provides a terminal, including: a receiving unit, adapted to receive indication information sent by a base station, where the indication information is used to indicate whether to allow reselection of PUCCH resources corresponding to SR information or PUCCH resources corresponding to HRAQ-ACK information; and the selecting unit is suitable for selecting and sending the PUCCH resource corresponding to the SR information or the PUCCH resource corresponding to the HRAQ-ACK information when the PUCCH resource corresponding to the SR information or the PUCCH resource corresponding to the HRAQ-ACK information is not allowed to be reselected based on the indication information.
Optionally, the receiving unit is adapted to receive configuration information sent by a base station through a high-level signaling, where the configuration information is used to indicate a PUCCH resource corresponding to SR information, and the configuration information includes the indication information; and acquiring the indication message based on the configuration information.
Optionally, the selecting unit is adapted to select and transmit the PUCCH resource corresponding to the SR information when the PUCCH resource corresponding to the SR information overlaps with another PUCCH/PUSCH resource and the SR is a positive scheduling request, and discard the other PUCCH/PUSCH resource.
Optionally, the selecting unit is adapted to select and transmit the PUCCH resource corresponding to the HRAQ-ACK and discard other PUCCH/PUSCH resources when the PUCCH resource corresponding to the HRAQ-ACK information overlaps with other PUCCH/PUSCH resources and the PUCCH resource corresponding to the HRAQ-ACK information is acquired through a high-layer signaling.
Optionally, the selecting unit is adapted to select and send a PUCCH resource corresponding to SR information when the PUCCH resource corresponding to SR information overlaps with a PUCCH resource corresponding to HRAQ-ACK information and SR is a positive scheduling request, and discard the PUCCH resource corresponding to HRAQ-ACK information.
Optionally, the overlapping is a partial overlapping of time domain resources or a complete overlapping of time domain resources.
An embodiment of the present invention provides a computer-readable storage medium, which is a non-volatile storage medium or a non-transitory storage medium, and has stored thereon computer instructions, where the computer instructions, when executed, perform any of the steps of the method described above.
An embodiment of the present invention provides a terminal, including a memory and a processor, where the memory stores computer instructions executable on the processor, and the processor executes the computer instructions to perform any one of the steps of the method described above.
Compared with the prior art, the technical scheme of the embodiment of the invention has the following beneficial effects:
according to the embodiment of the invention, by receiving the indication information sent by the high layer and based on the indication information, when the PUCCH resource corresponding to the SR information or the PUCCH resource corresponding to the HRAQ-ACK information is not allowed to be reselected, the PUCCH resource corresponding to the SR information is selected and sent, or the PUCCH resource corresponding to the HARQ-ACK information is selected and sent, so that the transmission delay of the SR information or the HARQ-ACK information can be reduced, and the user experience of delay sensitive services is improved.
Drawings
Fig. 1 is a flowchart of a method for transmitting PUCCH resources according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a terminal according to an embodiment of the present invention.
Detailed Description
In the existing implementation scheme, when a PUCCH resource corresponding to SR information is not transmitted or transmission of the PUCCH resource is delayed, transmission delay of the SR information or HARQ-ACK information may be increased. For SR information or HARQ-ACK information of delay sensitive services, scheduling delay is increased, thereby affecting user experience of the UE.
According to the embodiment of the invention, by receiving the indication information sent by the high layer and based on the indication information, when the PUCCH resource corresponding to the SR information or the PUCCH resource corresponding to the HRAQ-ACK information is not allowed to be reselected, the PUCCH resource corresponding to the SR information is selected and sent, or the PUCCH resource corresponding to the HARQ-ACK information is selected and sent, so that the transmission delay of the SR information or the HARQ-ACK information can be reduced, and the user experience of delay sensitive services is improved.
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below.
Referring to fig. 1, an embodiment of the present invention provides a method for sending PUCCH resources, which may include the following steps:
step S101, receiving indication information sent by a base station, where the indication information is used to indicate whether to allow reselection of PUCCH resources corresponding to SR information or PUCCH resources corresponding to HRAQ-ACK information.
In the existing NR system, only PUCCH format 0 and PUCCH format 1 may be used to transmit SR information, and all formats may be used to transmit HARQ-ACK information. When there is time domain resource overlap or time domain resource partial overlap in PUCCH resources corresponding to SR information or PUCCH resources corresponding to DL SPS (Downlink Semi-Persistent scheduling) PDSCH information, the NR system specifies a multiplexing rule.
For example, when PUCCH resources of PUCCH format 0 corresponding to SR information overlap PUCCH resources of PUCCH format 1 corresponding to HARQ-ACK information, only PUCCH resources of PUCCH format 1 corresponding to HARQ-ACK information will be transmitted, and PUCCH resources of PUCCH format 0 corresponding to SR information will not be transmitted.
When the PUCCH resource of PUCCH format 0 corresponding to the SR information is overlapped with the PUCCH resource of PUCCH format 3/PUCCH format 4 corresponding to the HARQ-ACK information, the corresponding PUCCH resource is selected to be transmitted according to the number of bits of UCI, at the moment, the PUCCH resource corresponding to the selected HARQ-ACK information may be the PUCCH resource with a longer time domain symbol number, or may be the later PUCCH resource, and the transmission mode can greatly increase the scheduling request time delay of the time delay sensitive service.
In the existing implementation scheme, when a PUCCH resource corresponding to SR information is not transmitted or transmission of the PUCCH resource is delayed, transmission delay of the SR information or HARQ-ACK information may be increased. For SR information or HARQ-ACK information of delay sensitive services, scheduling delay is increased, thereby affecting user experience of the UE. Therefore, the embodiment of the invention selects and transmits the PUCCH resource corresponding to the SR information or selects and transmits the PUCCH resource corresponding to the HARQ-ACK information through the indication information transmitted by the base station.
In a specific implementation, the base station may send the indication information through higher layer signaling. The indication information is transmitted, for example, through Radio Resource Control (RRC) signaling.
In a specific implementation, the base station may additionally indicate the indication information when indicating a PUCCH resource corresponding to the scheduling request.
In a specific implementation, the indication information may be a flag bit of 1 bit.
In an embodiment of the present invention, the receiving of the indication information sent by the base station includes: receiving configuration information sent by a base station through a high-level signaling, wherein the configuration information is used for indicating PUCCH resources corresponding to SR information and comprises the indication information; and acquiring the indication message based on the configuration information.
And step S102, based on the indication information, when the PUCCH resource corresponding to the SR information or the PUCCH resource corresponding to the HRAQ-ACK information is not allowed to be reselected, selecting the PUCCH resource corresponding to the SR information and sending the selected PUCCH resource, or selecting the PUCCH resource corresponding to the HARQ-ACK information and sending the selected PUCCH resource.
In a specific implementation, it may be determined, based on the indication information, for example, based on a 1-bit allowed identifier, that when it is not allowed to reselect a PUCCH resource corresponding to SR information or a PUCCH resource corresponding to HRAQ-ACK information, a PUCCH resource corresponding to SR information is selected and transmitted, or a PUCCH resource corresponding to HARQ-ACK information is selected and transmitted; when the PUCCH resource corresponding to the SR information or the PUCCH resource corresponding to the HRAQ-ACK information is allowed to be reselected, the PUCCH resource may be selected by using the existing scheme, that is, the multiplexing mode of the UCI information is determined by using the existing scheme, which is not described in detail in the embodiment of the present invention.
For example, in order to improve the user experience of the delay-sensitive service, the base station may configure, for SR information or HARQ-ACK information corresponding to the delay-sensitive service, a PUCCH resource corresponding to the non-reselection SR information or a PUCCH resource corresponding to the HRAQ-ACK information, so that the terminal may send the PUCCH resource corresponding to the SR information in time or send the PUCCH resource corresponding to the HRAQ-ACK information in time, so as to improve the user experience of the delay-sensitive service.
In an embodiment of the present invention, the selecting and sending PUCCH resources corresponding to SR information includes: and when the PUCCH resource corresponding to the SR information is overlapped with other PUCCH/PUSCH resources and the SR is a Positive scheduling Request (Positive scheduling Request), selecting the PUCCH resource corresponding to the SR information and transmitting the selected PUCCH resource, and discarding the other PUCCH/PUSCH resources.
In a specific implementation, the SR is a Positive scheduling Request (Positive Schedule Request), which indicates that SR data to be sent currently exists.
In an embodiment of the present invention, the selecting and sending PUCCH resources corresponding to HARQ-ACK information includes: when the PUCCH resources corresponding to the HRAQ-ACK information are overlapped with other PUCCH/PUSCH resources and the PUCCH resources corresponding to the HRAQ-ACK information are acquired through high-level signaling (high-level signaling sent by a base station), the PUCCH resources corresponding to the HRAQ-ACK information are selected and sent, and the other PUCCH/PUSCH resources are discarded.
In a specific implementation, when the PUCCH resource corresponding to the HRAQ-ACK information overlaps with other PUCCH/PUSCH resources and the PUCCH resource corresponding to the HRAQ-ACK information is obtained through DCI signaling, the PUCCH resource may be selected by using an existing scheme, that is, the multiplexing mode of the UCI information is determined by using the existing scheme, which is not described in detail in the embodiment of the present invention.
In an embodiment of the present invention, the selecting and sending PUCCH resources corresponding to SR information includes: and when the PUCCH resources corresponding to the SR information are overlapped with the PUCCH resources corresponding to the HRAQ-ACK information and the SR is a positive scheduling request, selecting the PUCCH resources corresponding to the SR information and sending the PUCCH resources, and discarding the PUCCH resources corresponding to the HRAQ-ACK information.
In a specific implementation, the overlapping may be a partial overlapping of the time domain resources, or a complete overlapping of the time domain resources.
By applying the scheme, through receiving the indication information sent by the high layer and based on the indication information, when the PUCCH resource corresponding to the SR information or the PUCCH resource corresponding to the HRAQ-ACK information is not allowed to be reselected, the PUCCH resource corresponding to the SR information is selected and sent, or the PUCCH resource corresponding to the HARQ-ACK information is selected and sent, so that the transmission delay of the SR information or the HARQ-ACK information can be reduced, and the user experience of the delay sensitive service is improved.
In order to enable those skilled in the art to better understand and implement the present invention, the embodiment of the present invention further provides a terminal capable of implementing the method, as shown in fig. 2.
Referring to fig. 2, the terminal 20 may include: a receiving unit 21 and a selecting unit 22, wherein:
the receiving unit 21 is adapted to receive indication information sent by the base station, where the indication information is used to indicate whether to allow reselection of PUCCH resources corresponding to SR information or PUCCH resources corresponding to HRAQ-ACK information.
The selecting unit 22 is adapted to select and transmit a PUCCH resource corresponding to SR information or a PUCCH resource corresponding to HARQ-ACK information when reselection of the PUCCH resource corresponding to SR information or the PUCCH resource corresponding to HRAQ-ACK information is not allowed based on the indication information.
In a specific implementation, the receiving unit 21 is adapted to receive configuration information sent by a base station through a high layer signaling, where the configuration information is used to indicate a PUCCH resource corresponding to SR information, and the configuration information includes the indication information; and acquiring the indication message based on the configuration information.
In an embodiment of the present invention, the selecting unit 22 is adapted to select and transmit a PUCCH resource corresponding to SR information and discard other PUCCH/PUSCH resources when the PUCCH resource corresponding to SR information overlaps with other PUCCH/PUSCH resources and SR is a positive scheduling request.
In an embodiment of the present invention, the selecting unit 22 is adapted to select and transmit the PUCCH resource corresponding to the HRAQ-ACK and discard other PUCCH/PUSCH resources when the PUCCH resource corresponding to the HRAQ-ACK information overlaps with other PUCCH/PUSCH resources and the PUCCH resource corresponding to the HRAQ-ACK information is acquired through a high-layer signaling.
In an embodiment of the present invention, the selecting unit 22 is adapted to select and send a PUCCH resource corresponding to SR information when the PUCCH resource corresponding to SR information overlaps with a PUCCH resource corresponding to HRAQ-ACK information and SR is a positive scheduling request, and discard the PUCCH resource corresponding to HRAQ-ACK information.
In a specific implementation, the overlapping is a partial overlapping of the time domain resources or a complete overlapping of the time domain resources.
In a specific implementation, the working flow and the principle of the terminal 20 may refer to the description in the method provided in the above embodiment, and are not described herein again.
An embodiment of the present invention provides a computer-readable storage medium, which is a non-volatile storage medium or a non-transitory storage medium, and on which a computer instruction is stored, where the computer instruction executes, when running, any of the steps corresponding to the foregoing methods, and details are not described here again.
The embodiment of the present invention provides a terminal, including a memory and a processor, where the memory stores a computer instruction capable of running on the processor, and the processor executes, when running the computer instruction, any of the steps corresponding to the above methods, which is not described herein again.
Those skilled in the art will appreciate that all or part of the steps in the methods of the above embodiments may be implemented by associated hardware instructed by a program, which may be stored in a computer-readable storage medium, and the storage medium may include: ROM, RAM, magnetic or optical disks, and the like.
Although the present invention is disclosed above, the present invention is not limited thereto. Various changes and modifications may be effected therein by one skilled in the art without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (10)
1. A method for transmitting PUCCH resources, comprising:
receiving indication information sent by a base station, wherein the indication information is used for indicating whether to allow reselection of PUCCH resources corresponding to SR information when the PUCCH resources corresponding to the SR information are overlapped with other PUCCH/PUSCH resources in time domain resources; or, the indication information is used for indicating whether to allow reselection of the PUCCH resource corresponding to the HRAQ-ACK information when the PUCCH resource corresponding to the HRAQ-ACK information overlaps with other PUCCH/PUSCH resources in time domain resources;
based on the indication information, when the PUCCH resources corresponding to the SR information are not allowed to be reselected and the SR is a positive scheduling request, selecting the PUCCH resources corresponding to the SR information and sending the PUCCH resources, and discarding other PUCCH/PUSCH resources; or when the PUCCH resources corresponding to the HRAQ-ACK information are not allowed to be reselected and are acquired through high-layer signaling, the PUCCH resources corresponding to the HARQ-ACK information are selected and sent, and other PUCCH/PUSCH resources are discarded.
2. The sending method of the PUCCH resource according to claim 1, wherein the receiving the indication information sent by the base station includes:
receiving configuration information sent by a base station through a high-level signaling, wherein the configuration information is used for indicating PUCCH resources corresponding to SR information and comprises the indication information;
and acquiring the indication message based on the configuration information.
3. The method according to claim 1, wherein the PUCCH resource corresponding to the SR information includes another PUCCH/PUSCH resource having a time domain resource overlapping with another PUCCH/PUSCH resource, and is a PUCCH resource corresponding to HARQ-ACK information.
4. The method for transmitting the PUCCH resources according to any one of claims 1 to 3, wherein the overlapping is a partial overlapping of time domain resources or a complete overlapping of time domain resources.
5. A terminal, comprising:
the terminal comprises a receiving unit and a processing unit, wherein the receiving unit is suitable for receiving indication information sent by a base station, and the indication information is used for indicating whether to allow reselection of PUCCH resources corresponding to SR information when the PUCCH resources corresponding to the SR information are overlapped with other PUCCH/PUSCH resources in time domain resources; or, the indication information is used for indicating whether to allow reselection of the PUCCH resource corresponding to the HARQ-ACK information when the PUCCH resource corresponding to the HRAQ-ACK information overlaps with other PUCCH/PUSCH resources in time domain resources; the selection unit is suitable for selecting and sending the PUCCH resource corresponding to the SR information and discarding other PUCCH/PUSCH resources when the PUCCH resource corresponding to the SR information is not allowed to be reselected and the SR is a positive scheduling request based on the indication information; or when the PUCCH resources corresponding to the HRAQ-ACK information are not allowed to be reselected and are acquired through high-layer signaling, the PUCCH resources corresponding to the HARQ-ACK information are selected and sent, and other PUCCH/PUSCH resources are discarded.
6. The terminal according to claim 5, wherein the receiving unit is adapted to receive configuration information sent by a base station through higher layer signaling, where the configuration information is used to indicate a PUCCH resource corresponding to SR information, and the configuration information includes the indication information; and acquiring the indication message based on the configuration information.
7. The terminal according to claim 5, wherein the PUCCH resource corresponding to SR information has another PUCCH/PUSCH resource having overlapping time domain resources, and is a PUCCH resource corresponding to HARQ-ACK information.
8. The terminal according to any of claims 5 to 7, wherein the overlap is a partial overlap of time domain resources or a complete overlap of time domain resources.
9. A computer-readable storage medium, being a non-volatile storage medium or a non-transitory storage medium, having computer instructions stored thereon, wherein the computer instructions, when executed, perform the steps of the method according to any one of claims 1 to 4.
10. A terminal comprising a memory and a processor, the memory having stored thereon computer instructions executable on the processor, wherein the processor, when executing the computer instructions, performs the steps of the method of any one of claims 1 to 4.
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