PDCCH Monitoring Across Split CCE Occasions for Joint Detection
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Solution Overview
Problem
Existing communication technologies face challenges in efficiently monitoring and transmitting physical downlink control channels (PDCCH) due to limitations in aggregation levels, leading to suboptimal performance and reliance on historical transmission for detection.
Innovation Solution
Implementing a method and apparatus that monitor and configure PDCCH in multiple monitoring occasions, with each occasion corresponding to a part of the control channel elements (CCEs), allowing for joint detection across these occasions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If PDCCH is monitored in a single monitoring occasion with complete CCE information, then detection simplicity is maintained, but transmission performance and reliability are limited
Solution Approach 1:
The PDCCH monitoring process is segmented into multiple monitoring occasions, where each occasion monitors a specific subset of CCEs (e.g., first MO monitors even-numbered CCEs, second MO monitors odd-numbered CCEs). This segmentation allows the system to achieve better transmission performance through joint detection while distributing the detection complexity across multiple simpler monitoring stages.
2Reliability
If higher aggregation levels are used for PDCCH transmission, then transmission performance improves, but resource consumption increases
Solution Approach 1:
Instead of using a single high aggregation level that consumes more resources, the patent segments the CCE monitoring across multiple monitoring occasions. Each occasion monitors a portion of CCEs, effectively distributing the resource consumption while enabling joint detection that achieves performance comparable to or better than higher aggregation levels.
3Adaptability or versatility
If UE relies on historical PDCCH transmission for detection, then detection capability is constrained, but monitoring overhead is reduced
Solution Approach 1:
The patent configures multiple monitoring occasions in advance, each prepared to monitor specific CCE subsets. This preliminary arrangement enables the UE to perform joint detection across occasions without relying on historical transmissions, enhancing detection capability while the structured configuration keeps monitoring overhead manageable.
Data Source
AI summary
A channel monitoring method and apparatus, a channel transmission method and apparatus, a terminal, and a network side device. The channel monitoring method of this application includes: monitoring a PDCCH in at least two physical downlink control channel (PDCCH) monitoring occasions, where, each of the PDCCH monitoring occasions corresponds to a part of control channel elements (CCEs) of the PDCCH.