Centralized Beam Pair Selection for Full Duplex Interference Control
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Solution Overview
Problem
Existing wireless communications systems face challenges in complex and dynamic environments that attenuate or block signals, leading to issues such as self-interference and cross-link interference in full duplex communications, which affect beam determination accuracy and efficiency.
Innovation Solution
A centralized beam determination method is implemented at a wireless node to coordinate beam measurement and reporting, identifying optimal beams for full duplex communications and reducing self-interference and cross-link interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If full duplex communications are implemented to improve spectral efficiency and data rate, then communication productivity increases, but self-interference and cross-link interference occur that degrade signal quality
Solution Approach 1:
The patent introduces a centralized wireless node (gNB) as an intermediary to perform centralized beam determination. This mediator collects beam measurement reports from multiple UEs, processes the information centrally, and determines optimal beam pairs that minimize self-interference and cross-link interference while maximizing spectral efficiency for full duplex communications.
Solution Approach 2:
The system implements feedback mechanisms where UEs provide beam measurement reports to the centralized wireless node. The node uses this feedback information to iteratively optimize beam selections, adjusting beam pairs based on measured interference levels and channel conditions to achieve optimal full duplex operation.
2Device complexity
If distributed beam determination is used to reduce complexity, then device complexity decreases, but beam determination accuracy deteriorates due to inability to coordinate interference management
Solution Approach 1:
The centralized wireless node acts as a mediator that consolidates the complex beam determination task. Instead of each UE independently determining beams (distributed approach), the centralized node collects measurement data from all UEs and performs unified beam selection, achieving both coordination for accuracy and reasonable complexity distribution.
Solution Approach 2:
The patent merges the beam determination functions of multiple UEs into a single centralized decision-making process. By combining beam measurement reports from multiple UEs and performing unified beam pair selection, the system achieves coordinated interference management that improves beam determination accuracy while managing overall system complexity.
3Measurement precision
If multiple candidate beams are evaluated to improve beam quality, then beam determination accuracy increases, but processing time and computational resources increase
Solution Approach 1:
The system evaluates multiple candidate beams (excessive action) to ensure optimal beam selection for full duplex communications. By examining more beam options than strictly necessary, the system identifies beam pairs that best minimize interference while maintaining acceptable processing time through efficient centralized algorithms.
Solution Approach 2:
The system performs preliminary beam measurements and collects candidate beam information before final beam determination. UEs pre-evaluate multiple candidate beams and report measurements to the centralized node, which then performs efficient selection from the pre-filtered candidate set, reducing real-time processing requirements.
Data Source
AI summary
Certain aspects of the present disclosure provide techniques for centralized beam determination for full duplex (FD) communications. An example method, performed by a wireless node, includes obtaining at least one report indicating information regarding candidate beams, selecting, from the candidate beams, a pair of beams based on the information, and outputting, for transmission, signaling indicating that at least one user equipment (UE) is to use the pair of beams for full duplex (FD) wireless communications on a first link and a second link.