Punctured Resources for Self-Interference Measurement in Wireless UEs
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Solution Overview
Problem
Current wireless communication systems face challenges in accurately measuring self-interference, particularly in scenarios where resources for downlink and uplink communications overlap, leading to inefficiencies and potential misinterpretation of scheduling data, which can result in undecodable signals and increased latency.
Innovation Solution
The method involves puncturing specific resources in downlink and uplink communications, allowing for the measurement of self-interference within a threshold distance, thereby enabling more accurate interference assessment and reducing processing and signaling resource wastage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If resources for downlink and uplink communications are allowed to overlap to improve resource utilization, then spectral efficiency is improved, but self-interference measurement accuracy deteriorates
Solution Approach 1:
The patent segments the overlapping resources into two distinct parts: punctured resources where only uplink transmission occurs (enabling self-interference measurement) and non-punctured resources where both downlink and uplink transmissions occur (enabling normal communication). This segmentation allows simultaneous achievement of resource utilization improvement and measurement accuracy maintenance.
2Measurement precision
If self-interference measurement is performed in overlapping resources, then interference assessment is enabled, but processing and signaling resource wastage increases
Solution Approach 1:
The patent extracts the self-interference measurement function from the general overlapping resources and concentrates it specifically in the punctured resources. By taking out only the necessary measurement activity from the broader resource set, the system enables interference assessment while minimizing processing and signaling overhead associated with measurement operations.
3Measurement precision
If puncturing is applied to downlink resources for self-interference measurement, then measurement accuracy is improved, but downlink throughput deteriorates
Solution Approach 1:
The patent applies local quality by making puncturing selective rather than universal. Only specific downlink resources that overlap with uplink resources are punctured for self-interference measurement, while non-overlapping downlink resources maintain full transmission capability. This localized approach preserves downlink throughput in non-critical resources while enabling accurate measurement in critical overlapping resources.
Data Source
AI summary
Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may decode a downlink communication on a physical downlink shared channel (PDSCH). The downlink communication may have punctured resources. The UE may transmit, in association with the downlink communication, a first uplink communication on a physical uplink shared channel (PUSCH), and measure self-interference in the punctured resources of the downlink communication on the PDSCH that are within a threshold distance of resources of the first uplink communication on the PUSCH. Numerous other aspects are provided.