A method and device for indicating physical layer mobility beam failure recovery

CN116170826BActive Publication Date: 2026-08-28CHINA ACADEMY OF INFORMATION & COMM
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Patent Information

Application Number
CN202310095123.7
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2023-01-18
Publication Date
2026-08-28
Estimated Expiration
2043-01-18

AI Technical Summary

Technical Problem

[0005]本申请提出一种物理层移动性波束失败恢复的指示方法和设备，解决波束切换触发RRC重配置导致延迟、中断和开销的问题，尤其适用于服务小区改变的场景

Benefits of technology

[0033]本发明设计一种物理层移动性的波束失败恢复指示方法，在L1/L2移动性的基础上，同时考虑检测到波束失败的情况，通过终端上报邻区测量信息，以及波束失败恢复中的信令设计，可以获得两方面的优化：一方面，如果新波束与需要服务小区改变的目标小区相关联，终端可以将主小区变更到目标小区，并且波束更新到最优波束，另一方面波束恢复失败之前，可以从非服务小区进行波束恢复，也就是当不能正确接收来自服务小区的波束时，不需要直接触发无线电链路失败，而是选择非服务小区的更好的波束，能够显著提高连接的鲁棒性。所述方法适用于终端位于小区边缘的波束失败恢复，可用有效实现物理层移动性切换和波束失败恢复的信令，也就是终端在波束失败恢复的过程中可以直接变更服务小区及相应的最优波束，并且当波束恢复失败的时候还可以从其他邻区进行波束失败恢复，避免频繁的进入到RRC层的无线链路失败进行链路恢复。

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Abstract

The application discloses a method for indicating physical layer mobility beam failure recovery, comprising the following steps: determining first configuration information, wherein the first configuration information indicates information of one or more adjacent cells or adjacent cell groups; transmitting uplink control information in a service cell, wherein the uplink control information comprises a beam identifier satisfying a first threshold and a cell or cell group identifier where the beam identifier is located; and in response to the uplink control information, downlink control information in the service cell is used to indicate that a selected beam is located in the service cell or is switched to an adjacent target cell. The application also comprises a device for implementing the method. The application solves the problems of delay, interruption and overhead caused by beam switching triggering RRC reconfiguration, and is especially suitable for scenarios of service cell change.
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Citation Information

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