Full-Duplex Beam Pair Selection via Self-Interference Measurement
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Solution Overview
Problem
Current wireless communication systems face challenges in efficiently enabling full-duplex operation due to self-interference issues, which restrict the selection of suitable uplink and downlink beam pairs, leading to limitations in spectral efficiency and resource utilization.
Innovation Solution
An enhanced measurement and report configuration is implemented, where wireless nodes perform beam searches during downlink beam management to identify candidate downlink and uplink beams or beam pairs suitable for full-duplex operation, utilizing techniques like exhaustive SSB searches and CSI-RS measurements to minimize self-interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If full-duplex operation is enabled to improve spectral efficiency, then resource utilization improves, but self-interference increases
Solution Approach 1:
The patent measures self-interference characteristics and uses this harmful effect information to select beam pairs where the self-interference is acceptable or can be managed. By characterizing the self-interference and making informed selections based on these measurements, the system converts the harmful effect into a manageable parameter that enables full-duplex operation.
2Adaptability or versatility
If beam search is performed to identify suitable beam pairs, then full-duplex operation becomes possible, but measurement complexity increases
Solution Approach 1:
The patent performs beam searches and measures self-interference characteristics during downlink beam management processes before full-duplex operation begins. By conducting these measurements in advance and identifying suitable beam pairs beforehand, the system prepares the necessary beam configuration information ahead of time, reducing real-time complexity when full-duplex operation is activated.
3Reliability
If exhaustive beam search is performed to minimize self-interference, then full-duplex reliability improves, but time consumption increases
Solution Approach 1:
The patent performs beam searches during downlink beam management processes using existing measurement opportunities such as SSB and CSI-RS resources. By utilizing these partially available measurement opportunities rather than conducting completely separate exhaustive searches, the system achieves adequate beam pair identification without the full time cost of a dedicated exhaustive search.
Data Source
AI summary
Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a first wireless node (e.g., a user equipment) may determine one or more measurements associated with a beam search performed during a downlink beam management process. The first wireless node may transmit, to a second wireless node (e.g., a base station), a report that indicates one or more candidate downlink receive beams, candidate uplink transmit beams, or candidate downlink receive and uplink transmit beam pairs suitable for full-duplex operation based at least in part on the one or more measurements. Numerous other aspects are provided.