Unified Beam Alignment via CSI-RS and SRS Resource Association
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Solution Overview
Problem
Current beam alignment processes in high-frequency communications systems require separate uplink and downlink beam alignment procedures, resulting in high time-frequency resource overheads and inefficiencies.
Innovation Solution
A method where a base station sends configuration information to associate CSI-RS and SRS measurement resources, allowing for simultaneous uplink and downlink beam alignment using a single beam alignment process by indicating the relationship between these resources, thereby reducing resource overheads and improving alignment efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If separate uplink and downlink beam alignment processes are used, then beam alignment can be achieved, but time-frequency resource overheads increase
Solution Approach 1:
The patent combines separate uplink and downlink beam alignment processes into a single unified beam alignment process. The base station performs both uplink beam scanning (using SRS) and downlink beam scanning (using CSI-RS) simultaneously on the same time-frequency resources, eliminating the need for four separate scanning operations and reducing resource overhead while ensuring both uplink and downlink beam alignment are achieved.
2Reliability
If four times of beam scanning are performed for uplink and downlink alignment, then complete beam alignment is achieved, but resource overheads become high
Solution Approach 1:
The patent merges four separate beam scanning operations (uplink and downlink) into a single combined scanning process. The base station configures the UE to perform both uplink SRS transmission and downlink CSI-RS reception simultaneously, with both operations sharing the same time-frequency resources. This reduces the number of scanning operations from four to one while maintaining complete beam alignment coverage.
Solution Approach 2:
The patent makes the same time-frequency resources serve multiple functions simultaneously. The configured resources are used for both uplink SRS transmission and downlink CSI-RS reception, allowing the system to perform both uplink and downlink beam scanning on the same resources. This multi-functionality eliminates resource waste and reduces overall overhead while ensuring comprehensive beam alignment.
Data Source
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AI summary
Embodiments of the present invention provide a configuration resource indication method and an apparatus, and relate to the field of communications technologies, to resolve a prior-art problem that uplink beam alignment and downlink beam alignment cannot be performed simultaneously, and time-frequency resource overheads are high in a beam alignment process. The method includes: generating, by a base station, configuration information, where the configuration information includes information used to indicate a relationship between a channel state information-reference signal CSI-RS measurement resource and a sounding reference signal SRS measurement resource; sending, by the base station, the configuration information at a configuration moment; or receiving, by the user equipment, configuration information from a network device; determining the CSI-RS measurement resource and the SRS measurement resource based on the configuration information; and performing corresponding measurement.