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WO-2026092062-A1 - COMMUNICATION METHOD AND APPARATUS

WO2026092062A1WO 2026092062 A1WO2026092062 A1WO 2026092062A1WO-2026092062-A1

Abstract

The present application relates to the technical field of communications. Provided are a communication method and apparatus. In the method, different DCI is used to achieve two functions, i.e., indicating system information update and scheduling a paging message, and first DCI used to indicate system information update and second DCI used to schedule the paging message use different time-frequency resources, that is, the two functions, i.e., scheduling and indicating, are decoupled. A first communication apparatus (e.g., a terminal device) distinguishes functions of detected/received information by means of a first resource and a second resource. Therefore, compared with current methods in which paging message and system message update indication functions are both delivered within paging DCI, the present application can achieve the two functions, i.e., scheduling and indicating at different granularities, e.g., indicating system message update at a base station/cell granularity, and scheduling the paging message at an area granularity, thereby supporting requirements for diverse communication scenarios. Therefore, the present application can be applied to future communication application scenarios.

Inventors

  • WU, WENBIN
  • LI, Ruijie
  • XIANG, Hongyu

Assignees

  • 华为技术有限公司

Dates

Publication Date
20260507
Application Date
20251009
Priority Date
20241031

Claims (19)

  1. A communication method, characterized in that it includes: A first downlink control information (DCI) is detected on a first resource, the first DCI being used to indicate system message updates; A second DCI is detected on a second resource, the second DCI being used to schedule paging messages, and the first resource and the second resource include different time-frequency resources.
  2. A communication method, characterized in that it includes: Send configuration information, which is used to configure a first resource and a second resource. The first resource is used to carry a first DCI, which is used to indicate system message updates. The second resource is used to carry a second DCI, which is used to schedule paging messages. The first resource and the second resource include different time-frequency resources.
  3. The method according to claim 1 or 2 is characterized in that the time-frequency resource is the paging opportunity (PO) resource.
  4. The method according to any one of claims 1 to 3 is characterized in that the first DCI is information scrambled by the Physical Cell Identifier (PCI), the second DCI is information scrambled by the Area Identifier (AIA), and the AIA includes at least one physical cell.
  5. According to the method described in claim 4, the value range of the region identifier is different from the value range of PCI.
  6. A communication method, characterized in that it includes: Receive a first DCI on a first resource, the first DCI being used to schedule paging messages, and the first DCI indicating information about a second resource; Based on the first DCI, an indication message is received on the second resource, the indication message indicating whether there is a system message update in the first cell.
  7. The method according to claim 6 is characterized in that, when the indication information indicates that the first cell has a system message update, the indication information includes the identifier of the first cell.
  8. The method according to claim 6, wherein the indication information is received on the second resource of the first cell, and the indication information indicates whether the first cell has a system message update.
  9. The method according to any one of claims 6 to 8 is characterized in that the first DCI is information scrambled by a region identifier, the region includes multiple cells, and the multiple cells include the first cell.
  10. According to the method of claim 9, the value range of the region identifier is different from the value range of PCI.
  11. A communication method, characterized in that it includes: A first DCI is sent on a first resource. The first DCI is used to schedule paging messages. The first DCI indicates a second resource, which is a resource carrying the indication information. If the indication information indicates that there is a system message update in the first cell, then the indication information is sent if there is a system message update in the first cell; or, the indication information is sent, indicating whether there is a system message update in the first cell.
  12. The method according to claim 11, wherein if the indication information indicates that the first cell has a system message update, the indication information includes the identifier of the first cell.
  13. The method according to claim 11, wherein the indication information is sent on the second resource of the first cell, and the indication information indicates whether the first cell has a system message update.
  14. The method according to any one of claims 11 to 13 is characterized in that the first DCI is information scrambled by a region identifier, the region includes multiple cells, and the multiple cells include the first cell.
  15. The method according to claim 14 is characterized in that the value range of the region identifier is different from the value range of PCI.
  16. A communication device, characterized in that the device comprises: a module for performing the method as described in any one of claims 1, 3-5, 6-10, or a module for performing the method as described in any one of claims 2, 3-5, 11-15.
  17. A communication device, characterized in that the communication device comprises: a processing unit and a storage unit; the storage unit is used to store computer instructions, which, when executed by the processing unit, cause the method as described in any one of claims 1, 3-5, 6-10 to be executed, or cause the method as described in any one of claims 2, 3-5, 11-15 to be executed.
  18. A computer-readable storage medium, characterized in that the computer-readable storage medium includes a computer program or instructions that, when executed on a computer, cause the computer to perform the method as claimed in any one of claims 1, 3-5, 6-10, or cause the computer to perform the method as claimed in any one of claims 2, 3-5, 11-15.
  19. A computer program product, characterized in that the computer program product includes a computer program or instructions that, when the computer program or instructions are run on a computer, cause the method as described in any one of claims 1, 3-5, 6-10 to be executed, or cause the method as described in any one of claims 2, 3-5, 11-15 to be executed.

Description

A communication method and apparatus This application claims priority to Chinese Patent Application No. 202411552100.5, filed with the State Intellectual Property Office of China on October 31, 2024, entitled “A Communication Method and Apparatus”, the entire contents of which are incorporated herein by reference. Technical Field This application relates to the field of communication technology, and in particular to a communication method and apparatus. Background Technology In New Radio (NR) technology, system message updates for network devices (such as base stations) are accomplished through the scheduling of downlink control information (DCI) in paging. Specifically, the presence of a system message update is indicated by the short message indicator field carried in the paging DCI. For example, "01" indicates that the paging DCI only schedules the paging function, "10" indicates that the paging DCI only schedules the short message indicator field, and "11" indicates that the paging DCI schedules both the paging message and the short message indicator field. In other words, current system message updates and paging scheduling are indicated by the same DCI. This method of distributing both paging message and system message update indications within the paging DCI limits its application scenarios and may not be suitable for future communication scenarios. Summary of the Invention This application provides a communication method and apparatus. Firstly, a communication method is provided. This method can be executed by a first communication device, for example, by the first communication device itself, or by a module applied to the first communication device (e.g., a processor, chip, or chip system), or by a logic node, logic module, or software capable of implementing all or part of the functions of the first communication device. For ease of description, the following description uses the execution of the method by the first communication device as an example. The method includes: detecting a first downlink control information (DCI) on a first resource, the first DCI being used to indicate system message updates; detecting a second DCI on a second resource, the second DCI being used to schedule paging messages, the first resource and the second resource including different time-frequency resources. Based on the first aspect of the method, different DCIs are used to implement the two functions of scheduling paging and indicating system message updates, respectively. Furthermore, the first DCI used for indicating system message updates uses different time-frequency resources than the second DCI used for scheduling paging messages, thus decoupling the scheduling/indication methods of the two functions. This supports and is applicable to diverse communication scenarios. For example, system message updates can be indicated at the base station/cell level, while paging messages can be scheduled at the region level. In this approach, scheduling paging messages at the region level allows terminals to quickly access different cells within a region when moving within the entire cell, improving communication efficiency. Indicating system message updates at the cell level enables more accurate system message updates, thereby reducing the increased power consumption of terminal devices caused by region-level system message updates. In one possible implementation, the time-frequency resource is the paging occasion (PO) resource. Different PO resources can distinguish between the first DCI used to indicate system message updates and the second DCI used to schedule paging messages, preventing the first communication device from confusing the first and second DCIs, thus avoiding confusion of the information indicated by the DCIs. In one possible implementation, the first DCI is information scrambled with a physical cell identifier (PCI), and the second DCI is information scrambled with a region identifier, wherein the region includes at least one physical cell. In one possible implementation, the region may include one or more physical cells. That is, the first DCI is scrambled at the granularity of physical cells, and the second DCI is scrambled at the granularity of the region. It can also be understood that the second communication device uniformly schedules paging messages at the region level and indicates system message updates at the cell level. Thus, the first communication device can distinguish whether the second communication device needs a system message update. For example, if it receives the first DCI from the second communication device via PCI, and the information carried by the first DCI indicates a system message update, it determines that the second communication device needs a system message update. In one possible implementation, the range of values for the region identifier differs from that for the PCI. The region identifier and PCI can be distinguished at the granularity of region and cell, and also a