Multi-Beam SRS Transmission for FR2 Multi-Panel Uplink
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Solution Overview
Problem
In New Radio (NR) technology, the high frequency band (FR2) experiences fast attenuation, necessitating beam-based data transmission, but existing methods only configure one beam direction for sounding reference signals (SRS), which limits transmission efficiency when multiple antenna panels or transmission reception points are used.
Innovation Solution
Configuring multiple beam directions for SRS transmission by indicating L pieces of target beam information, where L is greater than 1, using RRC, MAC, or DCI signaling to optimize beam selection and reduce overhead.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If only one beam direction is configured for SRS transmission, then the device complexity is reduced, but the transmission efficiency deteriorates when multiple antenna panels or TRPs are used
Solution Approach 1:
The patent segments the beam configuration by separating the indication of multiple target beam directions from the SRS resource configuration. The base station sends separate indication information for L target beam directions (where L>1) corresponding to different antenna panels or TRPs, allowing each panel/TRP to be configured with its own optimal beam direction independently, thus improving transmission efficiency without excessive complexity
Solution Approach 2:
The patent adds a new dimension to beam configuration by introducing multiple target beam directions (L>1) for a single SRS resource, moving from traditional single-beam configuration to multi-beam configuration. This dimensional expansion enables simultaneous optimization for multiple antenna panels or TRPs, resolving the contradiction between simplicity and efficiency
2Productivity
If multiple beam directions are configured for SRS transmission, then the transmission efficiency improves, but the signaling overhead increases
Solution Approach 1:
The patent merges the indication of multiple target beam directions with the SRS resource configuration process. By sending indication information that simultaneously specifies L target beam directions corresponding to different antenna panels or TRPs, the system reduces redundant signaling compared to configuring each beam separately, thus improving SRS transmission efficiency while controlling signaling overhead
Solution Approach 2:
The indication information mechanism is designed to serve multiple functions: it identifies L target beam directions, associates them with corresponding antenna panels or TRPs, and configures the SRS resources simultaneously. This multi-functionality reduces the need for separate signaling for each parameter, resolving the overhead issue while enabling multi-beam transmission
Data Source
AI summary
data transmission processing method, includes: receiving configuration information sent by a base station, the configuration information carrying sounding reference signal (SRS) resource configuration information; with regard to one SRS resource, the configuration information being used for indicating L pieces of target beam information, L being a positive integer greater than 1; and sending the SRS in beam directions indicated by the L pieces of target, beam information.