SRS-Based Beam Pair Selection for Multi-Panel Uplink
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current wireless communication systems face challenges in efficiently selecting optimal antenna beam pairs for simultaneous uplink transmission with multi-panels (STxMP) in user equipment (UE), particularly in determining the appropriate directions for antenna beams to maximize signal strength and minimize interference.
Innovation Solution
The implementation of sounding reference signals (SRS) based beam pair selection techniques, where the UE configures SRS spatial filters to determine the directions of antenna beams for SRS transmission, and the network node selects the optimal antenna beam pair based on measured signal strength indications, such as RSRP or SINR, for further data transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the UE configures SRS spatial filters to determine antenna beam directions, then the signal strength and transmission reliability are improved, but the device complexity and configuration burden increase
Solution Approach 1:
The network node performs preliminary configuration by providing SRS configuration sets that include spatial relation information indicating preferred beam directions. The UE uses these pre-provided configurations to set up SRS spatial filters before actual transmission occurs, eliminating the need for real-time complex beam direction determination while ensuring reliable uplink transmission.
2Reliability
If multiple antenna beam pairs are configured for STxMP transmission, then the transmission robustness is improved, but the measurement and selection complexity increase
Solution Approach 1:
The network node measures the signal strength of SRS transmissions using different antenna beam pairs and provides feedback through the SRS configuration sets. This feedback mechanism enables the UE to select optimal beam pairs without performing complex independent measurements, as the network node's pre-measured and provided spatial relation information guides the beam selection process.
3Productivity
If the network node selects optimal antenna beam pairs based on measured signal strength, then the communication efficiency is improved, but the network node processing requirements increase
Solution Approach 1:
The UE performs self-service by using the SRS configuration sets provided by the network node to automatically determine optimal beam directions for transmission. The UE configures its SRS spatial filters based on the network node's pre-provided spatial relation information, eliminating the need for the network node to perform complex real-time beam selection calculations while maintaining high communication efficiency.
Data Source
AI summary
A user equipment (UE) and a network node can support sounding reference signals (SRS) based antenna beam pair selection for simultaneous uplink transmission with multi-panels by the UE. One or more antenna beam pairs of a UE having a first antenna panel and a second antenna panel may be used to transmit SRSs to a first transmission reception point (TRP) and a second TRP simultaneously using SRS resources configured by one or more SRS configuration sets from the network node. The UE can configure a SRS spatial filter for a SRS resource to indicate a direction of an antenna beam, while some of the SRS resource is configured by the one or more SRS configuration sets received from the network node. The network node can select an antenna beam pair among the one or more antenna beam pairs based on indications of signal strength of SRSs received.