Dynamic TDD Interference Mitigation via Reception Beam Switching
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Solution Overview
Problem
In a dynamic time division duplex (TDD) environment, inter-cell interference occurs due to differing TDD patterns between adjacent cells, leading to performance degradation and communication quality deterioration, especially when the distance between electronic devices is close.
Innovation Solution
An electronic device with an antenna array and processor adjusts reception beams and bandwidth parts (BWP) to mitigate interference by forming beam pair links with base stations, selecting interference-occurring durations based on TDD patterns, and changing BWP settings to minimize interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If dynamic TDD patterns are used to increase data rate and flexibility, then system adaptability and productivity are improved, but inter-cell interference occurs due to differing TDD patterns between adjacent cells
Solution Approach 1:
The patent implements dynamic TDD pattern adjustment where the electronic device can switch between different reception beams based on detected interference conditions. The system dynamically selects between first reception beam (for first TDD pattern) and second reception beam (for second TDD pattern) to adapt to varying TDD configurations in different cells, maintaining high adaptability while mitigating interference through real-time beam switching
Solution Approach 2:
The patent changes the reception beam parameter based on detected TDD pattern mismatches. When interference is detected in the first reception beam during uplink slots of adjacent cells, the system switches to a second reception beam with different spatial characteristics, thereby changing the reception parameter to avoid interference while maintaining communication quality
2Reliability
If reception beam switching is performed to mitigate interference, then communication quality is improved, but device complexity increases due to multiple beam management operations
Solution Approach 1:
The electronic device autonomously performs interference detection, TDD pattern comparison, and reception beam selection without requiring complex network coordination. The device self-monitors signal quality, self-identifies interference conditions by comparing TDD patterns, and self-switches reception beams accordingly, reducing overall system complexity while maintaining high communication quality
Solution Approach 2:
The system implements feedback-based beam management where the electronic device continuously monitors signal quality and interference levels, then uses this feedback to determine when to switch between reception beams. The feedback mechanism enables intelligent beam selection based on actual channel conditions, improving communication quality while keeping device complexity manageable through condition-based decision making
Data Source
AI summary
The present invention provides an electronic device for mitigating inter-cell interference in a dynamic TDD environment, the electronic device including: at least one antenna array including antenna elements; and a processor configured to use the antenna array and form a plurality of reception beams having mutually different directions, wherein at least one processor may enable: a first beam pair link to be formed with a first transmission beam emitted from a first base station by using a first reception beam having a first direction; information about a first TDD pattern indicating a TDD sequence set in a serving cell formed by the first base station and information about a second TDD pattern indicating a TDD sequence set in an adjacent cell adjacent to a serving cell formed by a second base station to be acquired; a first portion of the first TDD pattern to be selected on the basis of the information about the first TDD pattern and the information about the second TDD pattern; the detection of whether interference has occurred in the first portion; and a second beam pair link to be formed with one among transmission beams emitted from the second base station by using a second reception beam having a second direction different from the first direction, when the interference is determined to have occurred.