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CN-122002451-A - Communication method, device, system, computer readable storage medium and chip system

CN122002451ACN 122002451 ACN122002451 ACN 122002451ACN-122002451-A

Abstract

The application provides a communication method, a device, a system, a computer readable storage medium and a chip system. And the terminal equipment receives the activation indication information sent by the access network equipment, wherein the activation indication information is used for indicating the activation target auxiliary cell. The activation indication information is used for indicating a target AP-TRS resource set and a target SRS-AS resource associated with the target secondary cell. And the terminal equipment determines the target CSI-RS resource based on the activation indication information and the resource mapping relation. The terminal equipment receives the CSI-RS sent by the access network equipment on the determined target CSI-RS resource, and sends a CSI report comprising the measurement result of the CSI-RS to the access network equipment. The access network equipment can implicitly indicate the target CSI-RS resource through the identification of the target AP-TRS resource set and the identification of the target SRS-AS resource, and the implicit triggering of the CSI-RS is realized under the condition that no explicit signaling is newly added or more signaling overhead is not added. The access network equipment implicitly indicates the CSI-RS resource when indicating the AP-TRS resource to be used for time-frequency synchronization of the UE, so that the trigger time delay is reduced and the precision of the time-frequency synchronization is improved.

Inventors

  • MA YIKUN
  • QIU BIN
  • CHEN ZHE
  • LIN WEI

Assignees

  • 荣耀终端股份有限公司

Dates

Publication Date
20260508
Application Date
20260409

Claims (15)

  1. 1. A communication method, applied to a terminal device, the method comprising: The method comprises the steps of receiving activation indication information sent by access network equipment, wherein the activation indication information is used for indicating to activate a target auxiliary cell, and the activation indication information comprises or is used for indicating the identification of a target AP-TRS resource set and the identification of a target SRS-AS resource associated with the target auxiliary cell; Receiving the CSI-RS on the target CSI-RS resource based on the activation indication information and the resource mapping relation, wherein the resource mapping relation is used for indicating the mapping relation between the CSI-RS resource set and the AP-TRS resource set and the mapping relation between the CSI-RS resource and the SRS-AS resource; and sending a CSI report to the access network equipment, wherein the CSI report comprises a measurement result of the CSI-RS.
  2. 2. The method of claim 1, wherein the resource mapping relationship comprises a first mapping relationship and a second mapping relationship; The first mapping relation comprises a resource mapping relation between an AP-TRS resource set and a CSI-RS resource set, each CSI-RS resource set comprises one or more CSI-RS resources, and the second mapping relation comprises a resource mapping relation between SRS-AS resources and CSI-RS resources.
  3. 3. The method of claim 2, wherein the resource mapping relationship between the AP-TRS resource set and the CSI-RS resource set is a quasi co-sited relationship.
  4. 4. The method of claim 2, wherein the target CSI-RS resource is determined based on an identification of the target SRS-AS resource, the second mapping relationship, and a target CSI-RS resource set determined based on an identification of the target AP-TRS resource set and the first mapping relationship.
  5. 5. The method according to any of claims 2-4, wherein prior to receiving the activation indication information sent by the access network device, the method further comprises: the method comprises the steps of receiving first configuration information and second configuration information, wherein the first configuration information is used for configuring the first mapping relation, and the second configuration information is used for configuring the second mapping relation.
  6. 6. The method of claim 5, wherein the step of determining the position of the probe is performed, The first configuration information and/or the second configuration information is carried in a radio resource control configuration message, and/or, The first configuration information and the second configuration information are carried in the same radio resource control configuration message.
  7. 7. The method of claim 1, wherein the step of determining the position of the substrate comprises, The activation indication information is carried in a medium access control element message.
  8. 8. The method of claim 1, wherein the step of determining the position of the substrate comprises, The CSI-RS is an early aperiodic CSI-RS.
  9. 9. A method of communication, for application to an access network device, the method comprising: The method comprises the steps of sending activation indication information to terminal equipment, wherein the activation indication information is used for indicating to activate a target auxiliary cell, and the activation indication information comprises an identifier of a target AP-TRS resource set and an identifier of a target SRS-AS resource associated with the target auxiliary cell; And receiving a CSI report sent by the terminal equipment based on the activation indication information, wherein the CSI report comprises a measurement result of the CSI-RS received by the terminal equipment on a target CSI-RS resource, the target CSI-RS resource is determined based on the identification of the target AP-TRS resource set, the identification of the target SRS-AS resource and a resource mapping relation, and the resource mapping relation is used for indicating the mapping relation between the CSI-RS resource set and the AP-TRS resource set and the mapping relation between the CSI-RS resource and the SRS-AS resource.
  10. 10. The method of claim 9, wherein the resource mapping relationship comprises a first mapping relationship and a second mapping relationship, the first mapping relationship comprises a resource mapping relationship between an AP-TRS resource set and a CSI-RS resource set, each CSI-RS resource set comprises one or more CSI-RS resources; Before the activation indication information is sent to the terminal equipment, the method further comprises the following steps: the method comprises the steps of sending first configuration information to the terminal equipment and sending second configuration information to the terminal equipment, wherein the first configuration information is used for configuring the first mapping relation, and the second configuration information is used for configuring the second mapping relation.
  11. 11. The method according to claim 9 or 10, wherein the activation indication information is carried in a medium access control element message; And/or, the CSI-RS is an early aperiodic CSI-RS.
  12. 12. A communication device comprising at least one processor coupled to a memory having stored therein a program or instructions that, when executed by the processor, cause the device to perform the method of any one of claims 1 to 8 or the method of any one of claims 9 to 11.
  13. 13. A computer readable storage medium having stored thereon a computer program or instructions, which when executed, cause a computer to perform the method of any of claims 1 to 8 or the method of any of claims 9 to 11.
  14. 14. A communication system comprising the communication device of claim 12.
  15. 15. A system on a chip comprising one or more processors configured to invoke from memory and execute instructions stored in memory, such that the method of any of claims 1 to 8 is performed or the method of any of claims 9 to 11 is performed.

Description

Communication method, device, system, computer readable storage medium and chip system Technical Field The present application relates to the field of communications technologies, and in particular, to a communications method, apparatus, system, computer readable storage medium, and chip system. Background In the communication scenario, the base station activates a secondary cell (SCell) for a terminal device (UE), so that the data size of downlink transmission from the base station to the UE can be increased. In order to implement fast link adaptation after SCell activation, the base station needs to acquire downlink Channel State Information (CSI), and the acquisition of CSI depends on a channel state information reference signal (CHANNEL STATE information REFERENCE SIGNAL, CSI-RS) sent by the base station, and the UE receives the CSI-RS and feeds back a CSI report to the base station. CSI-RS triggering at SCell activation needs to support aperiodic tracking reference signals (aperiodic TRACKING REFERENCE SIGNAL, AP-TRS) used for fast time and/or frequency synchronization between base station and UE. In the existing SCell activation flow, the UE can accurately receive the CSI-RS only by completing rapid time and/or frequency synchronization between the base station and the UE through the AP-TRS, and the base station needs to trigger the CSI-RS through explicit signaling, so that signaling overhead is high. Disclosure of Invention The application provides a communication method, a device, a system, a computer readable storage medium and a chip system, which can reduce signaling overhead in an SCell activation flow and improve communication efficiency. In a first aspect, a communication method is provided, which may be performed by a terminal device, or may also be performed by a component (such as a circuit, a chip, or a chip system) configured in the terminal device, or may be implemented by a logic module or software capable of implementing all or part of the functions of the terminal device. The application is not limited in this regard. The following description will take a terminal device as an example. The method comprises the steps that the terminal equipment receives activation indication information sent by the access network equipment, wherein the activation indication information is used for indicating to activate a target auxiliary cell, and the target auxiliary cell is a cell in at least one auxiliary cell of the terminal equipment. The activation indication information may be used to indicate or directly include an identification of a target AP-TRS resource set and an identification of a target SRS-AS resource associated with the target secondary cell. The terminal equipment stores a resource mapping relation which is used for indicating the mapping relation between the CSI-RS resource set and the AP-TRS resource set and the mapping relation between the CSI-RS resource and the SRS-AS resource. In this way, the terminal device can determine the target CSI-RS resource based on the activation indication information and the resource mapping relationship. The terminal device may receive the CSI-RS sent by the access network device on the determined target CSI-RS resource, and send a CSI report including a measurement result of the CSI-RS to the access network device. Optionally, the CSI-RS is an early aperiodic CSI-RS. Therefore, when the access network equipment needs to activate the target auxiliary cell, the target CSI-RS resource can be accurately indicated through the identification of the target AP-TRS resource set and the identification of the target SRS-AS resource carried in the activation indication information, and the implicit triggering of the CSI-RS is realized under the condition that no explicit signaling is newly added or more signaling overhead is not added. And the access network equipment implicitly indicates the CSI-RS resource when indicating the AP-TRS resource to be used for time-frequency synchronization of the terminal equipment, thereby reducing the trigger time delay and improving the precision of time-frequency synchronization. The access network equipment realizes flexible scheduling of resources by means of static pre-configuring the resource mapping relation and dynamically sending the activation indication information. In one possible implementation, the resource mapping relationship preconfigured by the access network device for the terminal device may include a first mapping relationship and a second mapping relationship. The first mapping relation comprises a resource mapping relation between an AP-TRS resource set and a CSI-RS resource set, each CSI-RS resource set comprises one or more CSI-RS resources, and the second mapping relation comprises a resource mapping relation between an SRS-AS resource and a CSI-RS resource. Optionally, the target CSI-RS resource is determined based on the identification of the target SRS-AS resource, the second mapping relation,