Use a single set of control resources to dynamically switch the transmission configuration indication state

By dynamically switching the transmission configuration indicator (TCI) status in a single control resource set (CORESET), the problem of low reliability of PDCCH in the prior art in multi-TRP communication scenarios is solved, and more efficient and reliable PDCCH transmission is achieved.

CN115004603BActive Publication Date: 2025-03-25QUALCOMM INC
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Patent Information

Application Number
CN202080093781.7
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Priority Date
2020-12-08
Filing Date
2020-12-09
Publication Date
2025-03-25
Estimated Expiration
2040-12-09

AI Technical Summary

Technical Problem

The existing multi-TRP communication schemes lack support for a single PDCCH with multiple TCI states, resulting in reduced reliability of PDCCH, especially in multi-TRP communication scenarios.

Method used

By dynamically switching the Transmission Configuration Indication (TCI) state using a single control resource set (CORESET), the base station may configure multiple PDCCH candidates, each of which includes one or more control channel element (CCE) types for indicating different TCI states. User equipment (UE) may blindly decode these PDCCH candidates to determine the TCI state to be used.

Benefits of technology

This method improves the reliability of PDCCH and the overall reliability of multi-TRP communication, increases the efficiency of CORESET transmission, and enables dynamic switching of TCI states to adapt to different communication conditions.

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Abstract

Various aspects of the present disclosure generally relate to wireless communications. In some aspects, a user equipment (UE) may receive configuration information including multiple transmission configuration indication (TCI) states associated with a control resource set (CORESET) from a base station. The UE may receive a physical downlink control channel (PDCCH) in a region associated with the CORESET from the base station, wherein the PDCCH includes at least one control channel element (CCE). The UE may perform blind decoding on multiple configured PDCCH candidates based at least in part on a resource element group (REG) bundle included in the at least one CCE, wherein the multiple configured PDCCH candidates are associated with one or more of the multiple TCI states associated with the CORESET. Accordingly, the UE identifies the PDCCH transmitted by the base station based at least in part on the blind decoding.
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