CN-122027103-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

20260512

Application Date

20210402

Priority Date

20210311

Claims (20)

1. 1. A communication method, characterized by being applied to a terminal-side apparatus, the method comprising: Transmitting first information, wherein the first information indicates that the terminal side device has the capability of supporting coverage enhancement; receiving a first message, wherein the first message is a fourth message Msg4 of a random access process; in the case that the terminal side apparatus is not configured with a dedicated physical uplink control channel PUCCH, repeating transmission of a first PUCCH with a repetition number N, the dedicated PUCCH being configured to the terminal side apparatus through higher layer signaling, N being an integer greater than 1, The first PUCCH is configured to carry feedback information, where the feedback information indicates whether the terminal side device successfully receives the Msg4; the number of repetitions N is indicated by the first indication information.
2. 2. The method of claim 1, wherein the first indication information is carried in downlink control information, DCI.
3. 3. The method of claim 1, wherein the first indication information is carried in a system message.
4. 4. The method of claim 3, wherein prior to receiving the first message, the method further comprises receiving the system message, the system message comprising first indication information.
5. 5. The method of claim 2, wherein the first indication information is carried in a field in the DCI.
6. 6. The method according to claim 3 or 4, wherein the system message is a system message block SIB.
7. 7. The method according to any of claims 1-6, wherein the terminal side device is a user equipment, UE, the terminal side device is a chip in the UE, or the terminal side device is a component supporting terminal side functions.
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, or, And offsetting the resources occupied by the N times of repeated transmission of the first PUCCH by m2 frequency domain units relative to the reference frequency domain units, wherein m2 is a positive integer.
9. 9. A communication method applied to a network side device, the method comprising: Receiving first information, wherein the first information indicates that a terminal side device 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 the case that the terminal side apparatus is not configured with a dedicated Physical Uplink Control Channel (PUCCH), repeatedly receiving a first PUCCH by using a repetition number N, wherein N is an integer greater than 1, the dedicated PUCCH is configured to the terminal side apparatus through a higher layer signaling, The first PUCCH is configured to carry feedback information, where the feedback information indicates whether the terminal side device successfully receives the Msg4; the number of repetitions N is indicated by the first indication information.
10. 10. The method of claim 9, wherein the first indication information is carried in downlink control information, DCI.
11. 11. The method of claim 10, wherein the first indication information is carried in a system message.
12. 12. The method of claim 11, wherein prior to transmitting the first message, the method further comprises transmitting the system message, the system message including first indication information.
13. 13. The method of claim 10, wherein the first indication information is carried in a field in the DCI.
14. 14. The method according to claim 11 or 12, wherein the system message is a system message block SIB.
15. 15. The method according to any of claims 9-14, wherein the network side device is a network equipment, the network side device is a chip in the network equipment, or the network side device is a component supporting network side functions.
16. 16. The method of claim 15, 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, or, And offsetting the resources occupied by the N times of repeated transmission of the first PUCCH by m2 frequency domain units relative to the reference frequency domain units, wherein m2 is a positive integer.
17. 17. A communication device comprising means for performing the method according to any of claims 1-8.
18. 18. A communication device comprising means for performing the method of any of claims 9-16.
19. 19. A communication device, comprising: A processor; a memory coupled to the processor, the memory storing computer instructions; the method of any of claims 1-8 being performed or implemented when said computer instructions are executed by said processor.
20. 20. A communication device, comprising: A processor; a memory coupled to the processor, the memory storing computer instructions; The method of any of claims 9-16 being performed or implemented when said computer instructions are executed by said processor.

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