Bandwidth Adaptation in 5G UE Control Resource Sets
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Solution Overview
Problem
Current 3GPP wireless communication systems face challenges in bandwidth adaptation, particularly in 5G networks, where UEs need to efficiently monitor and switch between multiple beam pair links and bandwidths to optimize power consumption and resource usage, while also managing complexity and beam failure scenarios.
Innovation Solution
The method involves a communication device and base station that switch between different bandwidths and control resource sets, using directional beams to adapt bandwidth dynamically based on traffic needs, and employing discontinuous reception (DRX) patterns to optimize power consumption and resource allocation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If UEs monitor multiple beam pair links simultaneously to ensure robust communication, then reliability is improved, but device complexity increases
Solution Approach 1:
The patent segments the monitoring of multiple beam pair links into separate monitoring occasions. Instead of monitoring all beams simultaneously, the UE monitors different beam pair links at different time instances (first monitoring occasion for first beam, second monitoring occasion for second beam), thereby reducing instantaneous complexity while maintaining overall reliability through diversified beam monitoring.
2Use of energy by moving object
If UEs switch between different bandwidths to adapt to traffic needs, then energy efficiency is improved, but device complexity increases
Solution Approach 1:
The patent implements dynamic bandwidth adaptation where the UE can switch between first bandwidth and second bandwidth based on traffic requirements. The UE monitors control data in the first bandwidth during first monitoring occasions and in the second bandwidth during second monitoring occasions, allowing flexible adaptation of bandwidth usage to actual needs while managing complexity through structured switching mechanisms.
3Adaptability or versatility
If UEs monitor control data in both first and second bandwidths, then adaptability is improved, but use of energy increases
Solution Approach 1:
The patent employs periodic monitoring patterns where the UE alternates between monitoring in the first bandwidth and second bandwidth at different monitoring occasions. This periodic switching allows the UE to maintain adaptability to different bandwidth conditions while reducing energy consumption by not continuously monitoring both bandwidths simultaneously, but rather in a time-multiplexed manner.
Data Source
AI summary
A communication system is disclosed in which a communication device and a base station initially communicate using a first bandwidth. The communication device monitors for control data transmitted, by the base station, using a first control resource set conveyed in the first bandwidth. The communication device and the base station switch to using a second bandwidth, wherein the second bandwidth is different to the first bandwidth, and the communication device monitors for control data transmitted, by the base station, using a second control resource set that is conveyed in the second bandwidth.