Receive-Beam CLI Measurement for TDD Beam Pair Selection
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Solution Overview
Problem
Existing wireless communication systems face inefficiencies in managing cross-link interference (CLI) due to limited directional measurement capabilities, leading to suboptimal beam pair selection and TDD configuration adjustments, which can impact network performance and user experience.
Innovation Solution
A user equipment (UE) measures CLI in multiple receive directions using configured resources, identifying receive beams based on downlink signals, and reports these measurements to the base station, enabling more efficient beam pairing and TDD configuration adjustments.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If CLI measurement is performed using a single receive beam, then the measurement process is simple and quick, but the beam pair selection may be suboptimal and interference management is less effective
Solution Approach 1:
The patent extends CLI measurement from a single receive beam dimension to multiple receive beam directions. The UE measures CLI on multiple receive beams (e.g., first receive beam and second receive beam) and reports measurements for each beam direction, enabling the network to select optimal beam pairs considering interference levels in multiple spatial dimensions.
Solution Approach 2:
The patent divides the CLI measurement process into separate measurements for different receive beams. Instead of a single aggregated measurement, the UE performs segmented measurements on individual receive beams and reports them separately, allowing granular interference assessment per beam direction.
2Reliability
If CLI measurement is performed on multiple receive beams, then beam pair selection and interference management are improved, but the measurement and reporting overhead increases
Solution Approach 1:
The patent configures CLI measurement resources and receive beams in advance before actual CLI measurements are needed. The network provides configuration information indicating multiple receive beams and associated CLI measurement resources ahead of time, so the UE can perform measurements efficiently when required without last-minute configuration overhead.
Solution Approach 2:
The patent uses the same CLI measurement resources for measuring interference from multiple aggressor UEs across multiple receive beams. The configured CLI measurement resources serve multiple purposes: measuring CLI from different aggressor UEs and evaluating multiple receive beam directions, reducing overall resource overhead.
3Adaptability or versatility
If the network has information about CLI in multiple directions, then TDD configuration and beam pairing can be optimized, but the UE requires more resources for measurement and reporting
Solution Approach 1:
The patent enables the UE to autonomously measure and report CLI on multiple receive beams based on configured parameters. The UE self-manages the measurement process across multiple beams and generates comprehensive CLI reports without requiring continuous network control or coordination for each measurement, reducing network overhead and enabling energy-efficient autonomous operation.
Data Source
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AI summary
Methods, systems, and devices for wireless communications are described. Generally, a base station may configure one or more cross-link interference measurement resources on which a user equipment (UE) is to measure CLI. The UE may measure CLI from a single aggressor UE in multiple receive directions. The UE may identify receive beams on which it receives other signal types, and use those receive beams to measure CLI. In some examples, the base station may explicitly indicate to the UE which receive beams it is to use for CLI measurements. The UE may measure CLI on each CLI measurement resource using the identified receive beam, and may transmit, to the base station, a CLI report including CLI measurements, an indication of resource on which CLI measurements were taken, or a combination thereof.