Multi-TRP Beam Coordination for Interference-Aware Beam Selection
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Solution Overview
Problem
In multi-TRP communication environments, existing beam management techniques fail to ensure optimal beam selection and often result in interference among beams, leading to suboptimal performance and potential beam failures.
Innovation Solution
A method and apparatus for signal transmission and reception using multi-input multi-output (MIMO) technology, where information on candidate beams and measurement values is exchanged between TRPs to determine optimal beam combinations, considering the impact of one TRP's beam on others, through synchronized signal reception and measurement operations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If each TRP independently performs beam management procedure, then beam management complexity is reduced, but beam selection optimality deteriorates
Solution Approach 1:
The patent merges the beam management procedures of multiple TRPs into a coordinated process. The terminal performs beam management with multiple TRPs simultaneously, and the TRPs exchange beam management information through the terminal to achieve joint beam selection that optimizes overall system performance while maintaining manageable complexity.
2Reliability
If beam combinations from multiple TRPs are used, then communication reliability is improved, but inter-TRP interference increases
Solution Approach 1:
The patent implements feedback mechanisms where the terminal measures the quality of beams from multiple TRPs and reports this information back to the TRPs. The TRPs use this feedback to adjust their beam selections and configurations, thereby reducing inter-TRP interference while maintaining communication reliability through coordinated beam combinations.
3Reliability
If joint beam management considering TRP beam impact is implemented, then beam selection optimality is improved, but system complexity increases
Solution Approach 1:
The patent uses the terminal as an intermediary to facilitate joint beam management between multiple TRPs. The terminal collects beam management information from multiple TRPs, performs measurements, and relays information between TRPs. This intermediary role enables coordinated beam selection that considers inter-TRP beam impact without requiring direct complex interactions between all TRP components.
Data Source
AI summary
An operation method of a first communication node may comprise the steps of: receiving, from a first transmission and reception point (TRP) and a second TRP, information of one or more candidate beams of each of the first TRP and the second TRP; transmitting, to the first TRP, the information of the one or more candidate beams of the second TRP; transmitting, to the second TRP, the information of the one or more candidate beams of the first TRP; receiving information of one or more beam combinations from the first TRP; transmitting, to the first TRP, information related to first measurement values for each beam combination corresponding to each of the one or more beam combinations; and receiving information of a first beam combination selected in the first TRP on the basis of the transmitted information related to the first measurement values for each beam combination.