Downlink Beam Group Reporting for Multi-TRP Wireless Communication
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Solution Overview
Problem
Existing wireless communication systems face challenges in simultaneously transmitting and receiving multiple downlink emitting beams due to limitations in antenna panel capabilities, leading to suboptimal group-based beam reporting mechanisms, especially in scenarios involving multiple TRPs or antenna panels from the same TRP.
Innovation Solution
An electronic apparatus and method that provides downlink reference signal resource configuration information to user equipment (UE) and receives group-based beam quality reports, enabling the network side to determine groups of downlink emitting beams that can be simultaneously transmitted and received by the UE, by associating TRPs and antenna panels with distinct resource sets and using identifiers to manage beam reporting.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If group-based beam quality reporting is implemented, then beam reporting capability is improved, but simultaneous beam transmission reliability deteriorates due to antenna panel limitations
Solution Approach 1:
The patent segments the beam reporting mechanism by introducing separate reporting structures for single TRP and multi-TRP scenarios. The network side configures different reference signal resource sets for different TRPs, and the UE performs separate beam quality measurements and reporting for each TRP. This segmentation allows the system to handle group-based beam reporting while respecting the antenna panel limitation that each panel can only transmit one beam at a time, thus maintaining transmission reliability.
Solution Approach 2:
The patent introduces the network side (gNB) as an intermediary that coordinates beam transmission across multiple TRPs. The network side receives beam quality reports from the UE, determines which beams can be simultaneously transmitted based on antenna panel availability, and then configures and schedules the actual beam transmissions. This intermediary coordination ensures that group-based beam reporting is implemented while preventing conflicts from arising in the first place.
2Productivity
If multiple downlink emitting beams are transmitted simultaneously, then communication efficiency is improved, but device complexity increases due to multiple TRP coordination requirements
Solution Approach 1:
The patent implements a universal beam management framework that handles both single-TRP and multi-TRP scenarios through the same basic mechanism. The network side uses unified configuration parameters (such as referenceSignalPower, resourceSet configurations) that work for both single and multiple TRPs. The UE uses the same measurement and reporting procedures regardless of whether one or multiple TRPs are involved. This universality allows simultaneous beam transmission to be enabled without requiring separate complex coordination mechanisms for different TRP configurations.
3Measurement precision
If beam quality measurement accuracy is improved, then beam selection precision is improved, but measurement time increases due to comprehensive TRP scanning
Solution Approach 1:
The patent applies preliminary action by having the network side pre-configure reference signal resource sets for multiple TRPs before the UE performs beam quality measurements. The network side determines in advance which TRPs are active and configures the corresponding reference signals accordingly. This preliminary configuration allows the UE to focus its measurements only on the relevant TRPs and beams, rather than performing exhaustive scanning of all possible TRPs, thus improving measurement precision while reducing the time required.
Data Source
AI summary
Provided are an electronic device and method for wireless communication, and a computer-readable storage medium. The electronic device comprises: a processing circuit which is configured to: send downlink reference signal resource configuration information to a user equipment, so as to perform downlink beam scanning, wherein the downlink reference signal resource configuration information comprises information of a transmit receive point that transmits a downlink transmission beam; and receive a packet-based beam quality report from the user equipment, wherein the packet-based beam quality report is used for a network side to determine, for the user equipment, a group of downlink transmission beams which can be simultaneously transmitted and can be simultaneously received by the user equipment.