Sidelink Beam Restriction for Cross-Link Interference
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current wireless communication systems face challenges in managing sidelink beam and transmission parameter settings, particularly in mitigating cross-link interference, which affects the quality of sidelink communications in 5G and New Radio (NR) networks.
Innovation Solution
The method involves a base station receiving an indication of cross-link interference and transmitting to a user equipment (UE) a set of allowed beams or transmission parameters, enabling the UE to communicate on sidelinks within restricted ranges to mitigate interference, thereby improving reception quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the UE uses unrestricted sidelink beams and transmission parameters, then the versatility and adaptability of sidelink communication is improved, but cross-link interference increases
Solution Approach 1:
The base station dynamically adjusts sidelink transmission parameters including beam direction, bandwidth, power level, and time resources based on detected cross-link interference conditions. When interference is detected, the base station modifies these parameters to restrict the UE's sidelink transmission characteristics, thereby reducing harmful interference while maintaining necessary communication flexibility through controlled adaptation.
2Object-generated harmful factors
If the base station restricts sidelink beams and transmission parameters, then cross-link interference is reduced, but the complexity of beam management and parameter control increases
Solution Approach 1:
The base station acts as an intermediary that centralizes the complexity of beam management and parameter control. Instead of requiring complex distributed coordination between UEs, the base station receives interference indications from UEs and autonomously determines appropriate beam restrictions and transmission parameter adjustments, thereby reducing overall system complexity while effectively managing cross-link interference.
Solution Approach 2:
The system implements a feedback mechanism where UEs report cross-link interference conditions to the base station, which then adjusts beam and transmission parameters accordingly. This closed-loop feedback approach enables dynamic adaptation to interference conditions while keeping the control logic centralized at the base station, managing complexity through iterative optimization rather than complex preemptive coordination.
3Reliability
If the base station implements real-time interference detection and parameter adjustment, then sidelink communication quality is improved, but the signaling overhead and processing requirements increase
Solution Approach 1:
The base station implements selective interference management by focusing parameter adjustments only on affected UEs and specific transmission parameters rather than managing all sidelink communications comprehensively. This partial action approach addresses interference issues where they occur without imposing system-wide signaling overhead, maintaining reliability for affected links while minimizing overall processing and signaling requirements.
Data Source
AI summary
Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive, from a base station, at least one of a first indication of a set of beams allowed for sidelink communication or a second indication of a range allowed for a sidelink transmission parameter. The UE may communicate on a sidelink in accordance with at least one of the set of beams or the range. Numerous other aspects are described.