Concurrent Sidelink Downlink Reception Beam Configuration
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Solution Overview
Problem
Current wireless communication systems lack the capability to enable concurrent sidelink and downlink reception for multi-transmit receive point (mTRP) user equipment (UE), leading to interference and reduced reception performance due to insufficient spatial separation between downlink and sidelink receive beams.
Innovation Solution
The method involves transmitting information related to concurrent reception capability using different receive beams, allowing UE to receive downlink transmissions from a base station and sidelink transmissions from a peer UE using distinct receive beams, and configuring transmission parameters to mitigate cross-link interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If UE uses the same receive beam for both downlink and sidelink reception, then device complexity is reduced, but interference increases and reception performance deteriorates
Solution Approach 1:
The patent segments the receive beam configuration by enabling the UE to use different receive beams for downlink and sidelink receptions. The UE is configured with multiple receive beams and can selectively activate specific beams for different reception types, thereby reducing interference while maintaining manageable device complexity through structured beam management.
Solution Approach 2:
The patent applies local quality by allowing different receive beams to be optimized for different reception scenarios. The UE can select receive beams with specific spatial characteristics suited for either downlink or sidelink reception, enabling localized optimization of reception quality for each communication type without requiring complete system redesign.
2Reliability
If UE uses different receive beams for downlink and sidelink reception, then interference is reduced and reception performance improves, but device complexity increases
Solution Approach 1:
The patent implements dynamics by enabling the UE to dynamically switch between different receive beams based on the current reception scenario. The UE can adaptively select appropriate receive beams for downlink or sidelink reception, and the system can dynamically adjust beam configurations through signaling mechanisms, balancing performance improvement with manageable complexity through flexibility rather than fixed complex structures.
Solution Approach 2:
The patent employs feedback mechanisms where the UE reports its receive beam capabilities and preferences to the network, and the network provides feedback configurations for appropriate beam selection. This feedback loop enables the system to manage complexity through coordinated beam configuration while maintaining improved reception performance through adaptive beam usage.
3Productivity
If concurrent sidelink and downlink reception is enabled, then scheduling efficiency improves, but cross-link interference increases
Solution Approach 1:
The patent resolves the interference issue by adding a spatial dimension through receive beam differentiation. Instead of time-division or frequency-division multiplexing, the system uses spatial beam separation to enable concurrent downlink and sidelink receptions. By transmitting in different spatial directions through different receive beams, the system achieves concurrent operation without cross-link interference, thereby improving scheduling efficiency.
Data Source
AI summary
Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may transmit, to a base station, information related to a concurrent reception capability using different receive beams. The UE may receive, from the base station, information indicating one or more slots in which concurrent sidelink and downlink reception is enabled based at least in part on the information related to the concurrent reception capability. The UE may receive, in the one or more slots in which concurrent sidelink and downlink reception is enabled, a downlink transmission from the base station using a first receive beam and a sidelink transmission from a peer UE using a second receive beam. Numerous other aspects are described.