Antenna Radiation Pattern Control for Interference Mitigation
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Solution Overview
Problem
Current wireless communication systems face challenges in effectively handling interference, particularly in interference-limited environments where cell-edge performance is poor due to high out-of-cell interference, leading to call drops and degraded communication quality.
Innovation Solution
The system employs a base station that measures and reports interference using reference signals, allowing for adaptive configuration to mitigate interference by controlling antenna radiation patterns, including main lobes and sidelobes, to reduce interference at other devices and maintain communication quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If frequency reuse schemes are implemented to improve spectral efficiency, then resource utilization improves, but inter-cell interference increases leading to poor cell-edge performance
Solution Approach 1:
The patent applies local quality by differentiating between different spatial regions and applying different transmission strategies. Specifically, the system identifies locations of other devices and controls antenna radiation patterns (main lobes and sidelobes) to reduce interference at those specific locations while maintaining normal transmission elsewhere. This localized interference management allows frequency reuse to continue while protecting vulnerable cell-edge users from harmful interference.
Solution Approach 2:
The patent implements dynamic adaptation by continuously monitoring interference conditions and adjusting antenna radiation patterns in real-time. The base station controls the direction and intensity of sidelobes dynamically based on the locations of communicating devices and interfering devices. This dynamic approach allows the system to maintain high spectral efficiency while adaptively mitigating interference as devices move or communication patterns change.
2Object-affected harmful factors
If antenna radiation patterns are controlled to reduce interference at other devices, then interference is reduced, but device complexity increases
Solution Approach 1:
The patent employs feedback mechanisms where the base station receives information about device locations and communication patterns, processes this information to determine optimal radiation patterns, and adjusts its antenna configuration accordingly. The system uses measurement reports and location information as feedback to continuously optimize interference reduction while managing complexity through automated control algorithms rather than manual configuration.
Solution Approach 2:
The base station performs self-service by autonomously controlling its own antenna radiation patterns based on received location and communication data. The system independently identifies interfering devices, calculates optimal beamforming weights, and adjusts sidelobe directions without requiring complex external coordination or manual intervention, thereby reducing operational complexity while maintaining effective interference mitigation.
Data Source
AI summary
A device for operating in a wireless communication system is configured for performing communication in the wireless communication system in accordance with a communications configuration obtained from a base station of the wireless communication system and scheduling communication of the device; using information indicating a set of reference signals [some or all] used in the wireless communication system; and for determining an amount of interference interfering with the communication in the wireless communication system for each of the set of reference signals by measuring to obtain a measurement result indicating the amount of interference perceived by the device through the reference signals of the set of reference signals; and generating a measurement report based on the measurement result and reporting the measurement report to the wireless communication system.