Wireless Node Interference Measurement Reporting for IAB Systems
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Solution Overview
Problem
Wireless communications systems face interference issues due to signals from other devices, leading to communication failures, reduced data rates, and inefficiencies in multi-user scenarios.
Innovation Solution
A method and system where a wireless node performs interference measurements on received signals and transmits reports to other nodes, enabling them to schedule communications and mitigate interference effects.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If wireless nodes transmit communications in shared spectrum resources, then system capacity and connectivity are improved, but interference from other signals increases
Solution Approach 1:
The patent implements a feedback mechanism where receiving wireless nodes measure interference from aggressor nodes and send measurement reports back to transmitting nodes. These reports enable the transmitting nodes to adjust their beamforming weights and transmission strategies to mitigate interference, thus resolving the contradiction between maintaining high system capacity and reducing interference in shared spectrum resources
Solution Approach 2:
The patent dynamically changes transmission parameters including beamforming weights, beam directions, and transmission power based on interference measurement reports. By adjusting these parameters in response to measured interference conditions, the system maintains high productivity while adapting to reduce harmful interference effects
2Reliability
If interference measurement and reporting mechanisms are implemented, then communication quality is improved, but system overhead and complexity increase
Solution Approach 1:
The patent implements partial measurement reporting where receiving nodes only report interference measurements for specific aggressor nodes or specific beam pairs that exceed certain thresholds, rather than reporting all possible measurements. This selective reporting approach maintains communication quality by focusing on significant interference sources while reducing system overhead and complexity by limiting the volume of measurement reports
Data Source
AI summary
Methods, systems, and devices for wireless communications at a first wireless node in a wireless communications system are described. The techniques may enable a first wireless node (e.g., an integrated access and backhaul (IAB) node in an IAB system) to establish a communications link with a second wireless node. The first wireless node may receive, via a reception beam of the first wireless node, an interfering signal from an aggressor wireless node. The first wireless node may perform an interference measurement of the interfering signal at the first reception beam. The first wireless node may transmit a report indicating the interference measurement to the second wireless node. The second wireless node may schedule communications based on the interference measurement. In some examples, the report may indicate one or more parameters of the interfering signal. In some examples, the report may correspond to one or more beams.