Cross-Carrier Control Resource Scheduling in Unlicensed Bands
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Solution Overview
Problem
Current wireless communication systems face challenges in efficiently utilizing unlicensed bands, particularly in the 5 GHz and 6 GHz bands, due to limited bandwidth and power constraints, which affect communication reliability and quality.
Innovation Solution
The method involves scheduling and transmitting control resource sets across multiple component carriers in unlicensed bands, allowing for increased bandwidth and power through carrier aggregation, with techniques such as broadcasting message patterns that indicate occasions for control resource sets and repetition patterns to enhance communication reliability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If carrier aggregation is used to increase bandwidth in unlicensed bands, then communication reliability is improved, but device complexity increases
Solution Approach 1:
The patent divides the control resource set into multiple occasions across different component carriers. Each occasion is monitored separately, allowing the UE to receive control information distributed across multiple carriers, thereby improving reliability through diversity while managing complexity through structured segmentation
Solution Approach 2:
The broadcast message serves multiple functions: it indicates occasions for control resource sets, provides scheduling information, and enables cross-carrier scheduling. This multi-functionality reduces the need for separate signaling mechanisms, improving reliability without proportionally increasing complexity
2Reliability
If multiple occasions for control resource sets are monitored across multiple component carriers, then communication quality is improved, but monitoring complexity increases
Solution Approach 1:
The base station pre-configures and broadcasts occasion information for control resource sets before actual data transmission. UEs use this advance information to know exactly when and where to monitor each carrier, eliminating the need for continuous blind monitoring and reducing monitoring complexity while maintaining high communication quality
Solution Approach 2:
The system dynamically allocates control resource set occasions across different component carriers based on traffic conditions and channel quality. The broadcast message adapts to indicate which carriers and occasions are active, allowing flexible resource distribution that improves communication quality while UE monitors only relevant occasions, managing complexity
Data Source
AI summary
Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment may receive, from a base station, a broadcast message that indicates a plurality of occasions for a control resource set, wherein the plurality of occasions are associated with a plurality of component carriers that are associated with an unlicensed band; and monitor at least one of the plurality of occasions for the control resource set. In some aspects, a user equipment may receive, from a base station, a control message that indicates a plurality of occasions for at least one control resource set, wherein the plurality of occasions are associated with a plurality of component carriers that are associated with an unlicensed band; and monitor at least one of the plurality of occasions for the at least one control resource set. Numerous other aspects are provided.