CoMP Beam Reporting via Unified Resource Groups
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Solution Overview
Problem
In CoMP systems, existing beam training methods are inadequate for simultaneous communication with multiple TRPs, as they often require separate beam training for each TRP, limiting the ability to perform beam training with multiple TRPs simultaneously.
Innovation Solution
A beam reporting method that configures multiple reference signal resource groups, allowing a terminal device to report related information of beams used by multiple TRPs, enabling simultaneous training of downlink beams from multiple network devices through a single scanning process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If separate beam training is performed for each TRP, then beam training accuracy for individual TRPs is improved, but the time consumption and system complexity increase
Solution Approach 1:
The patent combines beam training for multiple TRPs into a single unified process. The terminal device reports beam information for multiple TRPs simultaneously using a single reporting mechanism, where the reporting information includes beam identifiers and quality metrics for beams from different TRPs. This merging approach maintains measurement precision while significantly reducing time consumption compared to sequential separate training.
Solution Approach 2:
The patent creates a universal beam training framework that handles multiple TRPs through a common reporting structure. The reference signal resource groups are configured to enable simultaneous measurement of beams from different TRPs, and the reporting information format is designed to accommodate beam information from multiple sources uniformly, making the system multi-functional rather than requiring separate specialized procedures for each TRP.
2Productivity
If multiple reference signal resource groups are configured for simultaneous TRP communication, then beam training efficiency is improved, but the device complexity increases
Solution Approach 1:
The patent segments reference signal resources into distinct resource groups, where each group corresponds to a specific TRP. This segmentation allows the terminal device to systematically organize and report beam information for multiple TRPs without confusion. The segmented structure improves efficiency by enabling parallel measurement while managing complexity through clear organizational boundaries between different TRP resources.
Solution Approach 2:
The patent introduces configuration parameters such as reference signal resource group identifiers and beam reporting formats that standardize the handling of multiple TRPs. By changing and standardizing these parameters, the system achieves high beam training efficiency through automated reporting while controlling device complexity through parameterized configurations rather than hard-coded complex logic.
3Productivity
If beam training is performed with multiple TRPs simultaneously, then system throughput is improved, but the difficulty of detecting and measuring beams increases
Solution Approach 1:
The patent uses reference signals as intermediaries between multiple TRPs and the terminal device. These reference signals serve as measurable carriers that convey TRP-specific information, allowing the terminal to indirectly detect and measure beams from multiple TRPs simultaneously without direct complex interaction. The reference signal resource groups act as intermediaries that organize the measurement process, reducing detection difficulty while enabling parallel throughput improvement.
Data Source
AI summary
A beam reporting method and a communications apparatus is provided. The method includes that a terminal device receives first information, where the first information is used to configure at least two reference signal resource groups; and sending, by the terminal device, reporting information, where the reporting information includes related information of at least two beams, the at least two beams are used to send reference signals carried on at least two reference signal resources, and the reference signals sent by using the at least two beams can be simultaneously received by the terminal device, where the at least two reference signal resources are respectively from the at least two reference signal resource groups. In this application, related information of beams of at least two transmission points is reported through one time of beam scanning, to implement beam training in a CoMP system.