TDD Base Station Scheduling for Cross-Frame Interference Mitigation
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Solution Overview
Problem
In shared radio frequency spectrum environments, differing TDD frame configurations among wireless systems lead to interference, reducing network throughput and limiting effective use by networks with varying application needs.
Innovation Solution
Intelligent interference mitigation through time and interference-aware scheduling, where a base station identifies conflicting and non-conflicting subframes based on link conditions and resilience of subscriber units, assigning resilient units to conflicting subframes and non-resilient units to non-conflicting subframes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If TDD frame configurations are adjusted to meet varying application needs, then adaptability is improved, but interference between systems increases
Solution Approach 1:
The patent applies local quality by differentiating treatment of subscriber units based on their individual link conditions and resilience characteristics. Resilient subscriber units are assigned to conflicting subframes while non-resilient units are assigned to non-conflicting subframes, creating localized optimization rather than uniform system-wide configuration.
Solution Approach 2:
The patent implements dynamics through time and interference-aware scheduling that dynamically adjusts subframe assignments based on current link conditions and interference patterns. The system continuously adapts to changing conditions by re-evaluating which subscriber units can tolerate interference in conflicting subframes versus those requiring protection in non-conflicting subframes.
2Productivity
If time and interference-aware scheduling is implemented, then network throughput is improved, but device complexity increases
Solution Approach 1:
The patent applies self-service by having the base station automatically evaluate link conditions and determine resilience characteristics of subscriber units without external intervention. The system autonomously performs the complex scheduling decisions, classifying subscriber units as resilient or non-resilient and assigning them to appropriate subframes based on this self-evaluation.
Solution Approach 2:
The patent implements feedback mechanisms where the base station continuously monitors link conditions and interference patterns, using this feedback to dynamically adjust subframe assignments. The system learns from observed performance and adapts its scheduling decisions to maximize throughput while managing complexity through data-driven automation.
Data Source
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AI summary
Systems and methods for intelligent interference mitigation for time division multiplexing broadband networks. One example embodiments of a wireless base station (102) includes an electronic processor (204) and a transceiver (325) coupled to the electronic processor (204). The electronic processor (204) is configured to operate to communicate wirelessly via the transceiver (325) with subscriber units (104) utilizing time division duplexing (3) (TDD) and a first frame configuration, and characterize each of a plurality of sub-frames of the first frame configuration as being either conflicting or non-conflicting. The electronic processor (204) is configured to estimate link conditions for the subscriber units (104) and determine, based on the link conditions, whether the subscriber units (104) are resilient or non-resilient. The electronic processor (204) is configured to assign resilient subscriber units (104) to conflicting sub-frames and non-resilient subscriber units (104) to non-conflicting sub-frames.