Shared Reference Signal Resources for Beam Measurement in Massive MIMO
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Solution Overview
Problem
In current beam-training procedures for massive MIMO systems, especially at high-frequency bands, a large number of reference signal resources are required, leading to significant system overhead due to independent beam training among multiple Transmission-Reception Points (TRPs) or panels, which increases complexity and cost.
Innovation Solution
A method is introduced where measurement and report parameters are configured for target beam groups, allowing shared reference signal resources among TRPs within a group, reducing the number of resources needed for beam measurement and reporting, and optimizing the allocation of reference signal resources.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If independent beam training is performed among multiple TRPs or panels, then beam measurement precision is improved, but system overhead increases significantly
Solution Approach 1:
The patent merges beam training procedures across multiple TRPs by introducing a common reference signal resource that can be shared among different TRPs. Instead of each TRP using its own dedicated reference signal resources, the system combines multiple TRP beam measurements into a unified process, reducing the total number of reference signal resources required while maintaining measurement accuracy through coordinated measurement and reporting mechanisms.
2Measurement precision
If a large number of reference signal resources are allocated for beam training, then beam measurement accuracy is improved, but device complexity and cost increase
Solution Approach 1:
The patent implements a universal reference signal resource that serves multiple TRPs simultaneously. This common reference signal resource performs the function of reference signaling for multiple different TRPs, eliminating the need for separate dedicated reference signals for each TRP. The measurement and report parameters are configured to enable this shared resource to provide accurate beam measurement across all TRPs, reducing overall system complexity while maintaining measurement accuracy.
3Reliability
If separate reference signal resources are used for each TRP, then measurement reliability is improved, but resource allocation efficiency deteriorates
Solution Approach 1:
The patent combines separate reference signal resources into a single shared common reference signal resource that is used by multiple TRPs. This merging approach maintains measurement reliability through coordinated measurement procedures where each TRP's beam measurements are performed using the shared resource, while significantly improving resource allocation efficiency by eliminating redundant reference signal configurations across multiple TRPs.
Data Source
AI summary
A beam measurement and reporting method, and a computer readable storage medium are provided. The method includes: configuring measurement parameters and report parameters for one or more target beam groups, wherein, the measurement parameters include reference signal resources, reference signal resources corresponding to different target beam groups are different, reference signal resources for beams of at least two TRPs in the one or more target beam groups are same; transmitting the measurement parameters and the report parameters to a mobile terminal; controlling beams of the one or more target beam groups to transmit reference signals on reference signal resources corresponding to the beams, wherein the reference signals are used by the mobile terminal to perform beam measurement; receiving a measurement report including measurement results reported by the mobile terminal based on the report parameters.