CORESET CCE Puncturing Pattern Signaling for Blind Decoding Reduction
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Solution Overview
Problem
Existing wireless communication systems face challenges in efficiently utilizing communication resources due to increased UE complexity and power consumption resulting from blind decoding attempts on punctured control channel elements (CCEs), which can lead to higher blockage probabilities and reduced CORESET mapping efficiency.
Innovation Solution
Implementing control signaling to indicate a puncturing pattern for CCEs, allowing UEs to avoid decoding punctured CCEs, thereby reducing complexity and power consumption while improving resource utilization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If UEs perform blind decoding on all CCEs in CORESET, then control channel decoding reliability is maintained, but UE complexity and power consumption increase
Solution Approach 1:
The network entity performs preliminary action by transmitting control signaling indicating the puncturing pattern before the UE performs blind decoding. This allows the UE to advance know which CCEs are punctured and avoid unnecessary decoding attempts, thereby reducing complexity while maintaining reliability through targeted decoding on non-punctured CCEs only
2Reliability
If UEs perform blind decoding on all CCEs in CORESET, then control channel decoding reliability is maintained, but power consumption increases
Solution Approach 1:
The network entity transmits control signaling in advance indicating which CCEs are punctured. This preliminary information allows the UE to skip power-intensive blind decoding operations on punctured CCEs, thereby reducing power consumption while maintaining decoding reliability by concentrating decoding efforts only on non-punctured CCEs where control information may actually be present
3Productivity
If CCEs are punctured for resource allocation, then resource utilization efficiency is improved, but CORESET mapping efficiency is reduced
Solution Approach 1:
Control signaling acts as an intermediary between the puncturing operation and the UE decoding process. The signaling conveys puncturing pattern information from the network entity to the UE, enabling the UE to adapt its decoding strategy accordingly. This intermediary mechanism allows CCE puncturing for resource allocation while maintaining CORESET mapping efficiency through informed decoding decisions
Data Source
AI summary
Methods, systems, and devices for wireless communications are described. A user equipment (UE) may decode downlink control channel candidates according to a puncturing pattern indicated by a network entity. For example, the UE may receive control signaling including information that indicates that each control channel element (CCE) of a subset of CCEs within a control resource set (CORESET) is to be punctured. The network entity may output a downlink control channel message based on puncturing each CCE of the subset of CCEs within the CORESET. The UE may process, based on the information that indicates that each CCE of the subset is to be punctured, a set of downlink control channel candidates within the CORESET. The UE may decode the downlink control channel message based on processing the set of downlink control channel candidates.