Search

CN-116097831-B - Communication method and device

CN116097831BCN 116097831 BCN116097831 BCN 116097831BCN-116097831-B

Abstract

The application provides a communication method and a communication device, wherein the method is suitable for a scene that network equipment configures a plurality of bandwidth parts for terminal equipment. When the network device configures the first bandwidth part and the second bandwidth part for the terminal device, the network device may indicate the distinguishing characteristic parameter information of the first bandwidth part through the first information for the first bandwidth part, and the terminal device may determine the characteristic parameter information of the first bandwidth part according to the first information and the characteristic parameter information of the second bandwidth part. By the method, the terminal equipment can only store the distinguishing characteristic parameter information of the first bandwidth part, so that the cost for storing the characteristic parameter information of the first bandwidth part is reduced. At the same time, the network device may also reduce signaling overhead for indicating the first bandwidth portion.

Inventors

  • TIE XIAOLEI
  • ZHANG ZHANZHAN
  • ZHENG JUAN
  • ZHOU HAN

Assignees

  • 华为技术有限公司

Dates

Publication Date
20260512
Application Date
20201015

Claims (20)

  1. 1. A method of communication, comprising: The method comprises the steps of receiving first information from network equipment, wherein the first information indicates distinguishing characteristic parameter information of a first bandwidth part, and the distinguishing characteristic parameter information is different from characteristic parameter information of a second bandwidth part in the characteristic parameter information of the first bandwidth part; receiving second information from the network device, wherein the second information indicates characteristic parameter information of a third bandwidth part, and the first bandwidth part and the second bandwidth part belong to the same bandwidth part group, and the first bandwidth part and the third bandwidth part belong to different bandwidth part groups; And determining the characteristic parameter information of the first bandwidth part according to the first information and the characteristic parameter information of the second bandwidth part, wherein the switching time delay for switching from the first bandwidth part to the second bandwidth part is smaller than the switching time delay for switching from the first bandwidth part to the third bandwidth part.
  2. 2. The method of claim 1, wherein the characteristic parameter information of the first bandwidth portion is at least one item identical to the characteristic parameter information of the second bandwidth portion.
  3. 3. The method according to claim 1 or 2, wherein the distinguishing characteristic parameter information comprises one or more of: The maximum number of MIMO layers of the first bandwidth part; A slot scheduling type of the first bandwidth portion; Minimum scheduling offset of a physical downlink shared channel PDSCH of the first bandwidth portion; Minimum scheduling offset of a Physical Uplink Shared Channel (PUSCH) of the first bandwidth part; the bandwidth of the first bandwidth portion; a center frequency point of the first bandwidth portion; The set of search spaces for the first bandwidth portion.
  4. 4. A method according to claim 3, wherein the first information further comprises an identification of the second bandwidth portion.
  5. 5. A method according to claim 1 or 2, characterized in that the second bandwidth part is an initial bandwidth part of the terminal device; Or the second bandwidth part is any bandwidth part configured by the network device for the terminal device.
  6. 6. A method of communication, comprising: Determining first information, wherein the first information indicates distinguishing characteristic parameter information of a first bandwidth part, and the distinguishing characteristic parameter information is different from characteristic parameter information of a second bandwidth part in the characteristic parameter information of the first bandwidth part; transmitting the first information to a terminal device; Transmitting second information to the terminal equipment, wherein the second information indicates characteristic parameter information of a third bandwidth part; The terminal equipment comprises a first bandwidth part, a second bandwidth part, a third bandwidth part, a fourth bandwidth part, a fifth bandwidth part and a fourth bandwidth part, wherein the first bandwidth part and the second bandwidth part belong to the same bandwidth part group, the first bandwidth part and the third bandwidth part belong to different bandwidth part groups, and the switching time delay of the terminal equipment from the first bandwidth part to the second bandwidth part is smaller than the switching time delay of the terminal equipment from the first bandwidth part to the third bandwidth part.
  7. 7. The method of claim 6, wherein the characteristic parameter information of the first bandwidth portion is at least one item identical to the characteristic parameter information of the second bandwidth portion.
  8. 8. The method according to claim 6 or 7, wherein the distinguishing characteristic parameter information comprises one or more of: The maximum number of MIMO layers of the first bandwidth part; A slot scheduling type of the first bandwidth portion; Minimum scheduling offset of a physical downlink shared channel PDSCH of the first bandwidth portion; Minimum scheduling offset of a Physical Uplink Shared Channel (PUSCH) of the first bandwidth part; the bandwidth of the first bandwidth portion; a center frequency point of the first bandwidth portion; The set of search spaces for the first bandwidth portion.
  9. 9. The method of claim 8, wherein the first information further comprises an identification of the second bandwidth portion.
  10. 10. The method according to claim 6 or 7, characterized in that the second bandwidth part is an initial bandwidth part of the terminal device; Or the second bandwidth part is any bandwidth part configured by the network device for the terminal device.
  11. 11. A communication device, comprising: The communication unit is used for receiving first information from network equipment, wherein the first information indicates distinguishing characteristic parameter information of a first bandwidth part, the distinguishing characteristic parameter information is different from characteristic parameter information of a second bandwidth part in the characteristic parameter information of the first bandwidth part, and the second information indicates characteristic parameter information of a third bandwidth part; And the processing unit is used for determining the characteristic parameter information of the first bandwidth part according to the characteristic parameter information of the first information and the characteristic parameter information of the second bandwidth part, wherein the switching time delay for switching from the first bandwidth part to the second bandwidth part is smaller than the switching time delay for switching from the first bandwidth part to the third bandwidth part.
  12. 12. The apparatus of claim 11, wherein the characteristic parameter information of the first bandwidth portion is at least one item identical to the characteristic parameter information of the second bandwidth portion.
  13. 13. The apparatus according to claim 11 or 12, wherein the distinguishing characteristic parameter information comprises one or more of: The maximum number of MIMO layers of the first bandwidth part; A slot scheduling type of the first bandwidth portion; Minimum scheduling offset of a physical downlink shared channel PDSCH of the first bandwidth portion; Minimum scheduling offset of a Physical Uplink Shared Channel (PUSCH) of the first bandwidth part; the bandwidth of the first bandwidth portion; a center frequency point of the first bandwidth portion; The set of search spaces for the first bandwidth portion.
  14. 14. The apparatus of claim 11 or 12, wherein the second bandwidth portion is an initial bandwidth portion of the communication apparatus or is any bandwidth portion configured for the communication apparatus.
  15. 15. A communication device, comprising: The processing unit is used for determining first information, wherein the first information indicates distinguishing characteristic parameter information of a first bandwidth part, and the distinguishing characteristic parameter information is different from characteristic parameter information of a second bandwidth part in the characteristic parameter information of the first bandwidth part; The communication unit is used for sending the first information to the terminal equipment, sending second information to the terminal equipment, wherein the second information indicates characteristic parameter information of a third bandwidth part; The terminal equipment comprises a first bandwidth part, a second bandwidth part, a third bandwidth part, a fourth bandwidth part, a fifth bandwidth part and a fourth bandwidth part, wherein the first bandwidth part and the second bandwidth part belong to the same bandwidth part group, the first bandwidth part and the third bandwidth part belong to different bandwidth part groups, and the switching time delay of the terminal equipment from the first bandwidth part to the second bandwidth part is smaller than the switching time delay of the terminal equipment from the first bandwidth part to the third bandwidth part.
  16. 16. The apparatus of claim 15, wherein the distinguishing characteristic parameter information comprises one or more of: The maximum number of MIMO layers of the first bandwidth part; A slot scheduling type of the first bandwidth portion; Minimum scheduling offset of a physical downlink shared channel PDSCH of the first bandwidth portion; Minimum scheduling offset of a Physical Uplink Shared Channel (PUSCH) of the first bandwidth part; the bandwidth of the first bandwidth portion; a center frequency point of the first bandwidth portion; The set of search spaces for the first bandwidth portion.
  17. 17. The apparatus according to claim 15 or 16, wherein the second bandwidth portion is an initial bandwidth portion of the terminal device; or the second bandwidth part is any bandwidth part configured by the communication apparatus for the terminal device.
  18. 18. A communication device comprising a processor and a memory: the processor for executing a computer program or instructions stored in the memory, which, when executed, performs the method of any one of claims 1 to 10.
  19. 19. A computer readable storage medium comprising instructions which, when run on a computer, cause the computer to perform the method of any one of claims 1 to 10.
  20. 20. A computer program product comprising computer readable instructions which, when read and executed by a communication device, cause the communication device to perform the method of any of claims 1 to 10.

Description

Communication method and device Technical Field The present application relates to the field of wireless communications technologies, and in particular, to a communication method and apparatus. Background The concept of bandwidth part (BWP) was introduced in new wireless (NR) systems. A BWP is a segment of contiguous frequency resources on one carrier. One terminal device may be configured with one or more BWP in one serving cell (SERVING CELL), but only one uplink active BWP and one downlink active BWP may be applied at the same time. When the terminal device is configured with a plurality of BWP in one serving cell, a handover may be performed between the plurality of BWP. When configuring BWP for a terminal device, the network device needs to configure a number of different configuration parameters for configuring the properties of different physical channels in the BWP. For example, taking the configuration of downlink BWP as an example, one downlink BWP needs to configure parameters of channels such as a physical downlink shared channel (physical downlink SHARED CHANNEL, PDSCH), a physical downlink control channel (physical downlink control channel, PDCCH), and the like. Since each BWP corresponds to a large number of configuration parameters, the terminal device consumes a large memory overhead in order to store the configuration parameters of the plurality of BWPs. Moreover, when BWP switching is performed, the terminal device needs to reload the configuration parameters of the BWP after switching, which results in a great increase in switching delay, thereby affecting the data throughput rate of the terminal device. Disclosure of Invention The application aims to provide a communication method and a communication device, which are used for reducing the storage overhead of terminal equipment and improving the communication efficiency. In a first aspect, the present application provides a communication method, which is applicable to a scenario in which a network device configures a plurality of bandwidth parts for a terminal device. The execution body of the method is a terminal device or a module in the terminal device, and the terminal device is taken as an execution body for example. The method comprises the steps of receiving first information from network equipment, wherein the first information indicates distinguishing characteristic parameter information of a first bandwidth part, the distinguishing characteristic parameter information is different from characteristic parameter information of a second bandwidth part in the characteristic parameter information of the first bandwidth part, and the characteristic parameter information of the first bandwidth part is determined according to the first information and the characteristic parameter information of the second bandwidth part. By implementing the method described in the first aspect, the terminal device may store only the distinguishing characteristic parameter information of the first bandwidth portion, thereby reducing the overhead of storing the characteristic parameter information of the first bandwidth portion, and improving communication efficiency. At the same time, the network device may also reduce signaling overhead for indicating the first bandwidth portion. In a possible implementation manner of the first aspect, the characteristic parameter information of the first bandwidth part and the characteristic parameter information of the second bandwidth part are at least one item identical. By implementing this method, it is ensured that the storage space required for the distinguishing characteristic parameter information of the first bandwidth part is smaller than the storage space required for the characteristic parameter information of the first bandwidth part. In a possible implementation manner of the first aspect, the distinguishing characteristic parameter information includes one or more of a maximum multiple input multiple output MIMO layer number of the first bandwidth part, a time slot scheduling type of the first bandwidth part, a minimum scheduling offset of a physical downlink shared channel PDSCH of the first bandwidth part, a minimum scheduling offset of a physical uplink shared channel PUSCH of the first bandwidth part, a bandwidth of the first bandwidth part, a center frequency point of the first bandwidth part, and a search space set of the first bandwidth part. In a possible implementation manner of the first aspect, the first information further includes an identification of the second bandwidth portion. By implementing this method, the terminal device can accurately determine the second bandwidth part according to the first information. In a possible implementation manner of the first aspect, the second bandwidth portion is an initial bandwidth portion of the terminal device, or the second bandwidth portion is any bandwidth portion configured by the network device for the terminal device. In a possible implemen