SSB Grouping for Full-Duplex Beam Pair Selection
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Solution Overview
Problem
Current wireless communication systems face challenges in efficiently enabling full-duplex communication due to self-interference issues, which restrict the selection of suitable uplink and downlink beam pairs, leading to limitations in latency reduction, spectral efficiency, and resource utilization.
Innovation Solution
The method involves receiving a downlink signaling message indicating synchronization signal block (SSB) grouping based on full-duplex capability and performing beam searches or self-interference measurements to identify candidate beam pairs suitable for full-duplex operation, thereby optimizing beam selection to minimize self-interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If full-duplex communication is enabled to reduce latency and improve spectral efficiency, then communication performance is improved, but self-interference increases making beam pair selection more difficult
Solution Approach 1:
The patent segments the beam selection process into multiple stages: initial beam sweeping to identify candidate beams, self-interference measurement to evaluate candidate pairs, and final selection of optimal full-duplex beam pairs. This segmentation transforms the complex problem of selecting suitable beam pairs from a daunting task into manageable steps, enabling full-duplex operation while controlling self-interference
Solution Approach 2:
The patent performs preliminary beam sweeping and candidate identification before enabling full-duplex communication. By pre-identifying candidate beam pairs that have potential for full-duplex operation and then measuring their self-interference characteristics, the system prepares in advance for full-duplex operation, reducing the difficulty of real-time beam pair selection
2Reliability
If beam search and self-interference measurement are performed to identify suitable beam pairs, then full-duplex operation is enabled, but latency and complexity increase
Solution Approach 1:
The patent performs beam search and self-interference measurement on a subset of candidate beam pairs rather than exhaustively testing all possible pairs. By identifying a limited set of promising candidates through initial beam sweeping and then focusing measurements on those specific candidates, the system achieves sufficient reliability for full-duplex operation without incurring the time cost of complete enumeration
Solution Approach 2:
The patent performs preliminary beam sweeping to identify candidate beams before conducting detailed self-interference measurements. This preliminary action filters out unsuitable beams early, reducing the number of pairs that require time-consuming interference measurements and thus reducing overall beam search time
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 receive, from a second wireless node (e.g., a base station), a downlink signaling message indicating a synchronization signal block (SSB) grouping based at least in part on a full-duplex capability and transmission directions associated with the second wireless node. The first wireless node may configure, and the second wireless node may perform, a beam search and/or a self-interference measurement to identify at least one candidate downlink and uplink beam pair suitable for full-duplex operation based at least in part on the SSB grouping. Numerous other aspects are provided.