Multi-TRP Beam Management Using Spatial Relation Activation
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Solution Overview
Problem
The challenge in multi-TRP/panel transmission is how to simplify beam management effectively.
Innovation Solution
A method involving the use of TRP/panel selection to activate spatial relations between resource blocks and reference-signal resources, reducing signaling overhead and delay through the use of first and second signaling to determine and activate indexes for spatial-domain filters.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional beam management methods are used in multi-TRP/panel transmission, then comprehensive beam coverage can be achieved, but signaling overhead and management delay increase
Solution Approach 1:
The patent applies preliminary action by pre-configuring multiple reference-signal resource groups corresponding to different TRPs/panels before actual beam management operations. When beam management is needed, the system can directly activate pre-prepared spatial relations without extensive signaling exchange, thereby reducing signaling delay while maintaining comprehensive beam coverage across multiple TRPs/panels
2Reliability
If multiple reference-signal resource groups are configured for different TRPs/panels, then spatial diversity can be improved, but signaling overhead increases
Solution Approach 1:
The patent merges the management of multiple reference-signal resource groups by associating them with a single spatial relation indicator that can point to any of the configured groups. This consolidation approach allows the system to maintain multiple reference-signal resources for spatial diversity while using a unified selection mechanism, thereby reducing the signaling overhead that would otherwise be required to manage each TRP/panel independently
Solution Approach 2:
The patent creates a universal reference-signal resource group structure where each group can serve multiple TRPs/panels and can be selected through a common spatial relation indicator. This multi-functional design allows the same reference-signal resource group to be reused across different TRPs/panels, reducing the total number of signaling messages needed while maintaining spatial diversity benefits
Data Source
AI summary
The present disclosure provides a method and device in nodes for wireless communication. A first node receives first information; and receives a first signaling. The first information is used for determining K resource blocks; the K resource blocks respectively correspond to K reference-signal resource groups; any reference-signal resource in the K reference-signal resource groups corresponds to one of M first-type indexes; the first signaling is used for activating a first index in the M first-type indexes; a first resource block is any of the K resource blocks, a first reference-signal resource is used for determining a spatial relation of the first resource block, and the first reference-signal resource is one reference-signal resource corresponding to the first index in a reference-signal resource group corresponding to the first resource block. The above method employs information selected by TRP/panel, thus reducing a signaling overhead and delay of beam management.