Blind Detection of Downlink Control Information Using Multiple Beam Pairs
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Solution Overview
Problem
Current wireless communication systems face challenges in robustly and efficiently transmitting and receiving downlink control information, particularly in environments where beamforming is applied, due to limitations in beam association accuracy and flexibility in handling channel variations and scheduling issues.
Innovation Solution
The method involves configuring multiple Tx-Rx beam pairs between a UE and a BS, allowing the UE to perform blind detection using these pairs for control information, and reporting measurement results to determine beam association information, enabling flexible beam switching and improved reception performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If beamforming is applied to control information transmission, then transmission directionality and signal strength are improved, but beam association accuracy deteriorates due to channel variations and scheduling issues
Solution Approach 1:
The invention segments the beam association process into multiple independent beam pairs (Tx beam, Rx beam) instead of relying on a single beam association. The UE configures multiple beam pairs and performs blind detection on each, dividing the control information reception task across multiple beam segments to mitigate the impact of inaccurate single beam association
Solution Approach 2:
The invention changes the parameter of beam configuration from a single beam pair to multiple beam pairs. By configuring multiple Tx-Rx beam pairs and allowing the UE to perform blind detection across them, the system adapts to channel variations and scheduling changes without being constrained by single beam association accuracy
2Reliability
If multiple beam pairs are configured for blind detection, then reception robustness is improved, but device complexity increases due to multiple beam configurations and detection processes
Solution Approach 1:
The invention makes the beam configuration universal by defining a standardized multi-beam pair structure that can be applied to different control resource sets (CORESETs) and search spaces. The same multi-beam configuration mechanism serves multiple functions: initial access, control information reception, and adaptation to channel variations, reducing the need for separate complex mechanisms
3Device complexity
If single beam association is used for control information, then device complexity is reduced, but adaptability to channel variations and scheduling issues deteriorates
Solution Approach 1:
The invention introduces dynamics into the beam association by enabling the UE to perform blind detection across multiple configured beam pairs and to report measurement results that can trigger beam association updates. The system dynamically adapts to channel variations and scheduling changes without requiring complex real-time beam optimization, balancing adaptability with manageable complexity
Data Source
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AI summary
According to one embodiment of the present invention, at least two transmission-reception beam pairs for control information between a terminal and a base station are set, and the terminal performs a blind detection for the control information by using the at least two transmission-reception beam pairs, thereby enabling the control information to be more strongly and efficiently transmitted and received.