SRS Resource Grouping for Antenna Switching Beyond Four Rx Antennas
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Solution Overview
Problem
Existing communication systems struggle to support antenna switching configurations for terminal devices with more than four receiving antennas, limiting their ability to obtain optimal channel information for beamforming and pre-coding gains.
Innovation Solution
A method and system for configuring Sounding Reference Signal (SRS) resource set groups to support antenna switching configurations for terminal devices with more than four receiving antennas, enabling efficient channel information acquisition and improved communication performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the terminal device increases the number of receiving antennas to more than four, then the downlink receiving capability is improved, but the existing antenna switching configuration cannot support the terminal device
Solution Approach 1:
The patent segments the SRS resource sets into multiple groups, where each group corresponds to a specific antenna switching configuration. This segmentation allows the system to support terminal devices with more than four receiving antennas by organizing the large number of SRS resource sets into manageable groups that can be handled by existing configuration mechanisms.
Solution Approach 2:
The patent introduces a new dimension of organization by grouping SRS resource sets rather than configuring them individually. This dimensional change from individual resource configuration to grouped resource configuration enables support for terminal devices with more than four receiving antennas without requiring fundamental changes to the existing configuration framework.
2Measurement precision
If the terminal device uses more receiving antennas, then the channel information acquisition capability is improved, but the configuration complexity increases
Solution Approach 1:
The patent merges multiple SRS resource sets into groups, where each group is associated with a specific antenna switching configuration. This merging reduces configuration complexity by handling groups of resources as unified entities rather than individual resources, while still enabling comprehensive channel information acquisition across multiple antennas.
3Power
If the terminal device supports more receiving antennas, then the beamforming gain and pre-coding gain are improved, but the system compatibility with existing configurations is reduced
Solution Approach 1:
The patent creates a universal grouping mechanism that can accommodate terminal devices with different numbers of receiving antennas. By organizing SRS resource sets into groups that correspond to different antenna switching configurations, the system maintains compatibility with existing configurations while extending support to terminal devices with more than four receiving antennas, enabling improved beamforming and pre-coding gains.
Data Source
AI summary
An antenna switching method and a communication device are provided. The method includes transmitting, by a communication device, configuration information. The configuration message indicates M sounding reference signal (SRS) resource set groups, each SRS resource set group contains at least one SRS resource set, and M is 1, 2 or 3, and a resourceType field corresponding to at least one SRS resource set in one SRS resource set group is configured to be a same value. Each SRS resource set group corresponds to a corresponding antenna switching configuration that supports a first terminal device to have more than four receiving antennas.