CN-121984649-A - Communication method and device

Abstract

The embodiment of the application provides a communication method and a communication device, which provide repeated transmission of PUCCH under the condition that network equipment does not configure special PUCCH for terminal equipment, improve the success rate of information transmission in the communication process, improve the transmission efficiency of communication and effectively solve the problem of low transmission efficiency of communication in a coverage enhancement scene under the condition.

Inventors

• LIU YUN
• Xue Daifan
• LI QIANG
• XUE LIXIA

Assignees

• 华为技术有限公司

Dates

Publication Date

20260505

Application Date

20210402

Priority Date

20210311

Claims (16)

1. 1. A method of communication, comprising: transmitting first information, the first information indicating device having the capability to support coverage enhancement; receiving a first message, wherein the first message is a fourth message Msg4 of a random access process; In case that the apparatus is not configured with a dedicated physical uplink control channel, PUCCH, the first PUCCH is repeatedly transmitted using a repetition number, N, which is an integer greater than 1 configured to the apparatus through higher layer signaling, The first PUCCH is configured to carry feedback information, where the feedback information indicates whether the device successfully receives the fourth message Msg4; the repetition number N is indicated by a first indication information, where the first indication information is included in downlink control information DCI, and the DCI corresponds to the fourth message Msg 4.
2. 2. The method of claim 1, wherein the first indication information is carried in one field of the DCI.
3. 3. The method according to claim 1 or 2, characterized in that the apparatus is a user equipment, UE, or the apparatus is a chip in the UE.
4. 4. The method of claim 3, wherein the step of, In the N repeated transmissions of the first PUCCH, the resources occupied by the N-1 transmissions of the first PUCCH are offset by m1 frequency domain units relative to the resources occupied by the 1 st transmission, the N-1 transmissions are the transmissions after the 1 st transmission, and m1 is a positive integer greater than 0, or, The resources occupied by the N repeated transmissions of the first PUCCH are offset by m2 frequency domain units with respect to the reference frequency domain unit, and m2 is a positive integer greater than 0.
5. 5. A communication method applied to a device, the method comprising: receiving first information indicating that a user equipment has the capability of supporting coverage enhancement; sending a first message, wherein the first message is a fourth message Msg4 in a random access process; In case that the user equipment is not configured with a dedicated physical uplink control channel PUCCH, repeatedly receiving a first PUCCH with a repetition number N, the dedicated PUCCH being configured to the user equipment through higher layer signaling, N being an integer greater than 1, The first PUCCH is configured to carry feedback information, where the feedback information is used to indicate whether the user equipment successfully receives the fourth message Msg4; The repetition number N is indicated by first indication information, where the first indication information is included in downlink control information DCI, and in the DCI, the DCI corresponds to the fourth message Msg 4.
6. 6. The method of claim 5, wherein the first indication information is carried in a field of the DCI.
7. 7. The method of claim 5 or 6, wherein the apparatus is a network device or the apparatus is a chip in a network device.
8. 8. The method of claim 7, wherein the step of determining the position of the probe is performed, In the N repeated transmissions of the first PUCCH, the resources occupied by the N-1 transmissions of the first PUCCH are offset by m1 frequency domain units relative to the resources occupied by the 1 st transmission, the N-1 transmissions are the transmissions after the 1 st transmission, and m1 is a positive integer greater than 0, or, The resources occupied by the N repeated transmissions of the first PUCCH are offset by m2 frequency domain units with respect to the reference frequency domain unit, and m2 is a positive integer greater than 0.
9. 9. An apparatus comprising means for performing the method of any one of claims 1-4.
10. 10. An apparatus comprising means for performing the method of any one of claims 5-8.
11. 11. An apparatus, comprising: A processor; A memory coupled to the processor, the memory storing computer instructions; The method of any of claims 1-4 being performed or implemented when said computer instructions are executed by said processor.
12. 12. An apparatus, comprising: A processor; A memory coupled to the processor, the memory storing computer instructions; The method of any of claims 5-8 being performed or implemented when said computer instructions are executed by said processor.
13. 13. A computer readable storage medium, characterized in that the computer readable storage medium is comprised in an apparatus, the computer readable storage medium storing computer instructions which, when executed, perform or implement the method of any one of claims 1-4.
14. 14. A computer readable storage medium, characterized in that the computer readable storage medium is comprised in an apparatus, the computer readable storage medium storing computer instructions which, when executed, perform or implement the method of any of claims 5-8.
15. 15. A computer program product comprising a computer program or instructions, characterized in that the method according to any of claims 1-4 is performed or implemented when said computer program or instructions are run.
16. 16. A computer program product comprising a computer program or instructions, characterized in that the method according to any of claims 5-8 is performed or implemented when said computer program or instructions are run.

Description

Communication method and device The present application is a divisional application, the original application number is 202110359884.X, the original application date is 2021, 04, 02, the entire contents of which are incorporated herein by reference. The present application claims priority from chinese patent application filed on day 11 of 2021 at 03 to chinese patent office with application number 202110265678.2 and application name "determination of PUCCH repetition number", the entire contents of which are incorporated herein by reference. Technical Field The present application relates to the field of communications, and more particularly, to a communication method and apparatus in the field of communications. Background In a communication system, because the cost of the terminal device is limited, the upper power limit of the terminal device is lower than that of the network device, so that the coverage of uplink transmission is generally lower than that of downlink transmission. Therefore, there are some situations with limited coverage in uplink transmission, so that the signal strength of the transmission cannot meet the communication requirement, and the transmission efficiency of the communication process is affected. In addition, regarding the transmission of the physical uplink control channel (physical uplink control channel, PUCCH) for uplink transmission, in some scenarios (e.g. random access procedure) where the network device does not configure the dedicated PUCCH through higher layer signaling, the current technology does not give a specific solution for some coverage limited scenarios, and therefore, the transmission efficiency of the communication process is affected to some extent. Disclosure of Invention The embodiment of the application provides a physical uplink control channel transmission method, terminal equipment and network equipment, and provides repeated transmission of PUCCH (physical uplink control channel) under the condition that the network equipment does not configure special PUCCH for the terminal equipment, so that the success rate of information transmission in the communication process is improved, the transmission efficiency of the communication is improved, and the problem of low transmission efficiency of the communication in a coverage enhancement scene under the condition can be effectively solved. In a first aspect, a method for transmitting a physical uplink control channel is provided, including: Receiving a first message; In case that the terminal device is not configured with a dedicated physical uplink control channel PUCCH, repeating transmission of the first PUCCH with a repetition number N, where N is an integer greater than 1 and configured by the network device to the terminal device through higher layer signaling, The first PUCCH is used for carrying feedback information, the feedback information is used for indicating whether the terminal equipment successfully receives the first message, or the feedback information is information related to channel quality determined based on the first message, or the first PUCCH is determined according to the first message. In some embodiments, the first message and the first PUCCH are a message and PUCCH in a random access procedure. For example, the first message is a fourth message (Msg 4) in the random access procedure, and the first PUCCH is used to carry feedback information for Msg4, i.e. the feedback information is used to indicate whether the terminal device successfully receives Msg4. In other embodiments, the first message and the first PUCCH are a message and PUCCH in an RRC signaling configuration procedure. For example, the first message is RRC signaling, and the first PUCCH is used to carry feedback information for the RRC signaling, where the feedback information may be feedback information sent by a physical layer of the terminal device, where the feedback information is used to indicate whether the terminal device successfully receives the RRC signaling, or alternatively, the feedback information is used to indicate whether the terminal device successfully receives a downlink physical layer shared channel (physical downlink SHARED CHANNEL, PDSCH) for carrying the RRC signaling. In other embodiments, the first message and the first PUCCH are a message and PUCCH during channel measurement. For example, the first message may be a channel measurement request, and the first PUCCH is used to carry feedback information related to channel quality determined based on the channel measurement request, where the feedback information may include CSI measurement results or a transmit beam. In other embodiments, the first message may be indication information indicating transmission resources occupied by a PUCCH for carrying an SR, the first PUCCH being determined based on the indication information, i.e. the transmission resources occupied by the first PUCCH are derived based on the indication information. In t