Position-Pair Interference Database for Cellular RRM
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Solution Overview
Problem
Current cellular communication systems face challenges in effectively managing interference in Radio Resource Management (RRM), Coordinated Multi-Point (CoMP), Machine Type Communications (MTC), and Device-to-Device (D2D) communications, particularly in utilizing frequency spectrum like TV White Space, due to lack of comprehensive interference-related information.
Innovation Solution
The development of databases that store position-pair-dependent and node-dependent interference-related information, allowing for improved location-based RRM, identification of dominant interferers, and enhanced cognitive radio operations by providing detailed interference patterns and scheduling information for wireless devices.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If comprehensive interference-related information is collected and stored in databases, then interference management capability is improved, but system complexity and storage requirements increase
Solution Approach 1:
The interference information database is segmented into multiple specialized databases including position-pair-dependent interference database, node-dependent interference database, transmit pattern database, and receive pattern database. Each database stores specific types of interference information, allowing the system to manage comprehensive interference data while reducing the complexity of individual database structures and improving retrieval efficiency.
2Measurement precision
If position-pair-dependent interference information is stored for all position pairs, then interference prediction accuracy is improved, but storage requirements and data management complexity increase
Solution Approach 1:
The system implements local quality by creating position-pair-dependent interference information specifically for position pairs involving stationary or semi-stationary wireless devices. This selective approach focuses storage resources on the most critical interference scenarios while reducing overall data volume compared to storing all possible position pairs.
Solution Approach 2:
The system performs preliminary action by pre-calculating and storing interference information for position pairs before actual communication occurs. This allows the network node to quickly retrieve and use pre-computed interference data during real-time operations, improving prediction accuracy without requiring complex real-time calculations.
3Adaptability or versatility
If detailed transmit and receive pattern information is stored for each wireless device, then cognitive radio operations are enhanced, but information storage and processing requirements increase
Solution Approach 1:
The system extracts and stores only the essential transmit and receive pattern information needed for cognitive radio operations. By selectively capturing the most relevant pattern data rather than all possible information, the system enhances adaptability while controlling storage requirements.
Solution Approach 2:
The stored transmit and receive pattern information serves multiple functions including interference prediction, resource allocation optimization, and cognitive radio operations. This multi-functionality reduces the need for separate information storage systems, improving adaptability while controlling overall information storage requirements.
Data Source
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AI summary
Systems and methods are described herein relating to building and using one or more databases storing position-pair-dependent and/or node-dependent interference related information in a cellular communications system. In some embodiments, a method of operation of a node associated with one or more cellular communications networks comprises obtaining position-pair-dependent interference related information for pairs of positions. The position-pair-dependent interference related information comprises, for each pair of positions comprising a first position and a second position, information regarding interference caused by wireless transmissions originating at the first position to wireless receptions at the second position. The method further comprises storing interference related information comprising the position-pair-dependent interference related information in one or more databases and providing access to the one or more databases. The database(s) enable, for example, improved location-based Radio Resource Management (RRM).