Variable Subframe Interval for Inter Cell Interference Mitigation
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Solution Overview
Problem
Current wireless communication systems face challenges in efficiently mitigating inter cell interference, which affects the quality of service and data transmission rates.
Innovation Solution
The method involves varying the interval between subframes in a wireless communication system by using scheduling information from a physical downlink control channel (PDCCH) signal, allowing for efficient decoding of physical downlink shared channel (PDSCH) signals and reducing interference by adjusting the timing of PDCCH and PDSCH transmissions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If the interval between PDCCH and PDSCH subframes is fixed, then the system structure is simple, but inter cell interference cannot be effectively mitigated
Solution Approach 1:
The patent applies dynamics by making the interval between PDCCH and PDSCH subframes variable rather than fixed. The base station dynamically adjusts the time interval based on scheduling needs and interference conditions, allowing flexible optimization of interference mitigation while maintaining system adaptability.
Solution Approach 2:
The patent changes the temporal parameter (subframe interval) between control channel and data channel. By varying this time parameter, the system can optimize the timing relationship to reduce inter-cell interference while maintaining scheduling flexibility and system performance.
2Reliability
If the subframe interval is varied to mitigate interference, then inter cell interference is reduced, but the timing coordination complexity increases
Solution Approach 1:
The patent implements feedback mechanisms where the base station monitors channel conditions and scheduling effectiveness, then adjusts the subframe interval accordingly. This closed-loop approach ensures reliable signal decoding while managing timing coordination complexity through adaptive control based on actual system performance.
Data Source
AI summary
The present invention relates to a wireless communication system. More specifically, the present invention relates to a method and a device therefor, wherein the method comprises the steps of: receiving a PDCCH signal that contains scheduling information from a base station on a first subframe; receiving a PDSCH signal corresponding to said PDCCH signal from said base station on a second subframe; and decoding said PDSCH signal, wherein an interval between said first subframe and said second subframe is varied.