CN-122002406-A - Communication method and device

Abstract

A communication method and device relate to the technical field of communication. In the method, before or during cell switching, a candidate cell CSI-RS resource/CSI-RS resource set is configured for a terminal through a serving cell, so that the terminal can measure and report a measurement result based on the candidate cell CSI-RS resource/CSI-RS resource set configured by the serving cell, and therefore network side equipment (such as a second access network device) can know the candidate cell CSI-RS resource measurement result in advance, and further, a proper data scheduling mode can be selected to schedule uplink and downlink data for a target cell after cell switching is completed, and the reliability and efficiency of data transmission after the cell switching is completed (namely after switching from the serving cell (or called source cell) to the target cell) are improved.

Inventors

• LI FANG
• FAN BO
• YUAN SHITONG

Assignees

• 华为技术有限公司

Dates

Publication Date

20260508

Application Date

20241107

Claims (20)

1. 1. A method of communication, comprising: Receiving first configuration information, wherein the first configuration information comprises one or more report configurations of a serving cell, wherein one report configuration is associated with one or more reference signal resource sets, and the one or more reference signal resource sets comprise reference signal resources of one or more candidate cells; Receiving first information, wherein the first information is used for triggering measurement of reference signal resources of at least one candidate cell and/or reporting of measurement results, and the one or more candidate cells comprise the at least one candidate cell; And transmitting a measurement result of the reference signal resource of the at least one candidate cell.
2. 2. The method of claim 1, wherein the one reporting configuration is associated with one set of reference signal resources, comprising: One reporting configuration is associated with one set of reference signal resources, and the one set of reference signal resources includes reference signal resources of one or more candidate cells.
3. 3. The method of claim 2, wherein the one reference signal resource set includes one or more candidate cell indices and one or more reference signal resource indices, and wherein the number of candidate cell indices is the same as the number of reference signal resource indices, and wherein an i-th candidate cell index corresponds to an i-th reference signal resource index, and wherein i is a positive integer greater than or equal to 1.
4. 4. The method of claim 2, wherein the reference signal resource set includes a reference signal resource number corresponding to each candidate cell, one or more candidate cell indexes, and one or more reference signal resource indexes, and an i-th candidate cell index corresponds to a Ki-th reference signal resource index, where Ki is the reference signal resource number corresponding to the i-th candidate cell index, i is a positive integer greater than or equal to 1, and Ki is a positive integer greater than or equal to 1.
5. 5. A method according to claim 3, characterized in that one or more candidate cell indices included in the one set of reference signal resources are identical.
6. 6. The method of claim 4 wherein the one set of reference signal resources includes at most one candidate cell index.
7. 7. The method of claim 1, wherein the one reporting configuration is associated with one or more reference signal resource sets, comprising: one reporting configuration is associated with one or more reference signal resource sets, and each reference signal resource set includes reference signal resources of one candidate cell.
8. 8. The method of claim 7, wherein the one reporting configuration is associated with one or more reference signal resource sets, and each reference signal resource set comprises reference signal resources of one candidate cell, comprising: One report configuration associates one or more reference signal resource set indexes and one or more candidate cell indexes, wherein the number of the candidate cell indexes is the same as that of the reference signal resource set indexes, the ith candidate cell index corresponds to the ith reference signal resource set index, and i is a positive integer greater than or equal to 1.
9. 9. The method of claim 8, wherein the one reporting configuration associated one or more candidate cell indices are the same.
10. 10. A method according to any of claims 2 or 5-9, characterized in that one reporting configuration is associated with at most one candidate cell's reference signal resources when one or more of the following conditions are met: The reporting amount included in the one reporting configuration is not null, or the reporting amount does not include reference signal received power and/or signal to interference plus noise ratio, or the reporting amount includes any one or more of a channel quality indicator, a precoding matrix indicator, a layer indicator, a rank indicator, and a codebook index, or The maximum candidate cell number supported by the terminal for measurement is 1, or The reporting amount included in the one reporting configuration includes reference signal received power and/or signal to interference plus noise ratio and the terminal supports at most beam measurements of one candidate cell, or The reporting amount included in the one reporting configuration is not null, or the reporting amount does not include reference signal received power and/or signal to interference plus noise ratio, or the reporting amount includes any one or more of a channel quality indicator, a precoding matrix indicator, a layer indicator, a rank indicator, and a codebook index, and the terminal supports at most non-beam measurements of one candidate cell.
11. 11. The method of claim 1 or 7, wherein one reporting configuration is associated with one or more reference signal resource sets when any one or more of a channel quality indicator, a precoding matrix indicator, a layer indicator, a rank indicator, and a codebook index is included in the reporting amount of the one reporting configuration, or When the reporting amount of one reporting configuration includes the reference signal received power and/or the signal to interference and noise ratio, the one reporting configuration is associated with at most one reference signal resource set.
12. 12. The method of any one of claims 1-11, wherein the first information comprises first indication information; the first indication information indicates a report configuration index, the report configuration corresponding to the report configuration index is related to a reference signal resource set, or The first indication information indicates information of a trigger state, the trigger state corresponding to the information of the trigger state is associated with one or more report configurations, and one report configuration is associated with one or more reference signal resource sets.
13. 13. The method of claim 12, wherein after the receiving the first information, the method further comprises: measuring reference signal resources in a reference signal resource set associated with reporting configuration corresponding to the reporting configuration index and/or reporting corresponding measurement results according to the reporting configuration index, or And according to the information of the trigger state, the trigger state corresponding to the information of the trigger state is measured to be associated with one or more reference signal resources in a reference signal resource set associated with reporting configuration and/or to report a corresponding measurement result.
14. 14. The method of claim 12, wherein the first information comprises second indication information indicating one or more of: Candidate cell index, reference signal resource set index, or reference signal resource index; Wherein the reference signal resource of the candidate cell corresponding to the candidate cell index, or the reference signal resource in the reference signal resource set corresponding to the reference signal resource set index, or the reference signal resource corresponding to the reference signal resource index, is included in the reference signal resource set associated with the report configuration corresponding to the report configuration index, or And the reference signal resource of the candidate cell corresponding to the candidate cell index, or the reference signal resource in the reference signal resource set corresponding to the reference signal resource set index, or the reference signal resource corresponding to the reference signal resource index, comprises one or more report configuration-associated reference signal resource sets associated with the trigger state corresponding to the trigger state information.
15. 15. The method of claim 14, wherein after the receiving the first information, the method further comprises: measuring the reference signal resource of the candidate cell corresponding to the candidate cell index and/or reporting the corresponding measurement result, or Measuring the reference signal resources in the reference signal resource set corresponding to the reference signal resource set index and/or reporting the corresponding measurement results, or And measuring the reference signal resource corresponding to the reference signal resource index and/or reporting a corresponding measurement result.
16. 16. A method of communication, comprising: Transmitting first configuration information, wherein the first configuration information comprises one or more report configurations of a serving cell, wherein one report configuration is associated with one or more reference signal resource sets, and the one or more reference signal resource sets comprise reference signal resources of one or more candidate cells; and sending first information, wherein the first information is used for triggering the measurement of the reference signal resource of at least one candidate cell and/or the report of the measurement result, and the one or more candidate cells comprise the at least one candidate cell.
17. 17. A communication device comprising means or modules for implementing the method according to any of claims 1-15 or means or modules for implementing the method according to claim 16.
18. 18. A communication device comprising a processor for executing a computer program or instructions, causing the communication device to implement the method of any one of claims 1-15 or causing the communication device to implement the method of claim 16.
19. 19. A communication device comprising a processor and a transceiver for transceiving information, the processor being configured to execute a computer program or instructions to cause the communication device to implement the method of any of claims 1-15 or to cause the communication device to implement the method of claim 16.
20. 20. A communication device comprising a processor and interface circuitry for receiving signals from or transmitting signals from other communication devices than the communication device to the processor, the processor being for executing a computer program or instructions to cause the communication device to implement the method of any one of claims 1-15 or to cause the communication device to implement the method of claim 16.

Description

Communication method and device Technical Field The present application relates to the field of communications technologies, and in particular, to a communications method and apparatus. Background Currently, the access network device may configure reference signal resources of one or more candidate cells for the terminal, and the terminal may feed back measurement results of the reference signal resources of the one or more candidate cells by measuring the configured reference signal resources, where the measurement results of the reference signal resources of each candidate cell include a reference signal resource index and corresponding signal strength information (e.g. reference signal received power (REFERENCE SIGNAL RECEIVING power, RSRP)). The access network device can determine whether the terminal performs cell switching and to which candidate cell (i.e. target cell) to switch according to the measurement result fed back by the terminal. However, at present, besides the signal strength information, acquiring more channel state information (CHANNEL STATE information, CSI) information of the candidate cell before or during cell switching is not supported, so that the access network device cannot perform data scheduling on the switched target cell by adopting a proper scheduling mode, which is not beneficial to reliability and efficiency of data transmission. Disclosure of Invention The application provides a communication method and a communication device, which are beneficial to improving the reliability and the efficiency of data transmission. The application is described below in terms of various aspects, with the understanding that the embodiments and advantages of the various aspects below may be referenced to one another. In a first aspect, the present application provides a communication method, which may be applied to a terminal-side communication device, for example, a terminal or a communication module/processing module in the terminal, or a circuit or a chip in the terminal that is responsible for a communication function (such as a modem (modem) chip, also called a baseband (baseband) chip, or a system on chip (SoC) chip or a system-in-package (SYSTEMIN PACKAGE, SIP) chip that includes a modem core), or a circuit or a chip in the terminal that is responsible for a processing function (such as a graphics processor (graphics processing unit, GPU), an artificial intelligence (ARTIFICIAL INTELLIGENCE, AI) processor, or an application-specific integrated circuit (ASIC)). Taking the example that the method is applied to a terminal, in the method, the terminal receives first configuration information, wherein the first configuration information comprises one or more report configurations of a serving cell, one report configuration is associated with one or more reference signal resource sets, and the one or more reference signal resource sets comprise reference signal resources of one or more candidate cells. The terminal receives first information, where the first information is used to trigger measurement of reference signal resources and/or reporting of measurement results of at least one candidate cell, and one or more candidate cells include at least one candidate cell. The terminal transmits a measurement result of the reference signal resource of at least one candidate cell. Illustratively, the following description will be mainly made with reference signal resources as CSI-RS resources. Optionally, the above-mentioned first information is used to trigger the measurement and/or reporting of the measurement result of the CSI-RS resource of the candidate cell, and may be further described as that the first information is used to trigger the terminal to perform the measurement and/or reporting of the measurement result of the CSI-RS resource of the candidate cell, or as that the first information is used to trigger the measurement and/or reporting of the measurement result of the CSI-RS resource of the at least one candidate cell, or as that the first information is used to trigger the terminal to perform the measurement and/or reporting of the measurement result of the CSI-RS resource of the candidate cell after receiving the cell handover signaling, the measurement of the CSI-RS resource of the candidate cell and/or the reporting of the measurement result are performed, or the first information is described as triggering the measurement of the CSI-RS resource of the candidate cell and/or the reporting of the measurement result after receiving the cell switching signaling and before actually switching to the target cell by the terminal, or the first information is described as triggering the reporting of the measurement of the CSI-RS resource of the candidate cell and/or the measurement result in the cell switching process, the method comprises the steps of executing measurement of the CSI-RS resources of the candidate cell and/or reporting of measurement results, or describing that first in