Base Station Frequency Resource Allocation via Priority Coefficients
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Solution Overview
Problem
In wireless communication systems, dense deployment of cells leads to significant inter-cell interference, which reduces transmission performance and capacity, especially in 5G networks with increasing traffic demands, as existing interference coordination technologies are not effective in real-time and overloading scenarios.
Innovation Solution
A method and network device that configures frequency resources by dividing operating bands into elementary frequency resources, maintaining reference parameters, and allocating them based on frequency priority coefficients to minimize interference, using a central node to manage and allocate frequency resources across base stations, ensuring orthogonal or non-overlapping frequencies.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If cells are deployed densely to increase system capacity, then system capacity is improved, but inter-cell interference increases significantly
Solution Approach 1:
The patent segments the frequency spectrum into multiple frequency priority coefficients (FPCs), dividing the operating band into different frequency resources with different priority levels. This segmentation allows the system to allocate high-priority frequency resources to cells experiencing severe interference while reserving low-priority resources for cells with better conditions, thereby resolving the contradiction between dense deployment and interference management.
Solution Approach 2:
The patent dynamically adjusts frequency priority coefficients based on real-time interference measurements and cell conditions. By changing the frequency allocation parameters (FPC values) according to actual network state, the system can adaptively optimize resource distribution to minimize inter-cell interference while maintaining high system capacity in densely deployed scenarios.
2Reliability
If distributed interference coordination is used in dense deployment, then coordination between cells is achieved, but signaling overhead increases and interface overload occurs
Solution Approach 1:
The patent introduces a centralized network manager as an intermediary that collects interference information from all cells and performs centralized frequency resource allocation. This intermediary approach consolidates the coordination function, reducing the need for extensive peer-to-peer signaling between cells and thereby reducing signaling overhead while maintaining effective interference coordination.
Solution Approach 2:
The patent merges the interference coordination function into a centralized allocation mechanism where multiple cells' frequency resources are managed together by a single entity. This combining of coordination functions eliminates redundant signaling and reduces interface overhead compared to distributed coordination approaches.
3Object-affected harmful factors
If existing ICIC technology is used for interference coordination, then some interference management is achieved, but real-time coordination is not possible and system capacity is limited
Solution Approach 1:
The patent implements dynamic frequency priority coefficient adjustment based on real-time interference measurements and cell load conditions. Unlike static ICIC approaches, the system continuously monitors network state and dynamically reconfigures frequency allocations, enabling real-time interference coordination that adapts to changing traffic demands and interference patterns, thereby increasing system capacity.
Data Source
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AI summary
Disclosed is a base station frequency resource allocation method, for achieving proper allocation of base station frequency resources to avoid or reduce inter-cell interference. The method comprises: determining each basic frequency resource in each allowed operating band conforming to selectable operating bandwidth of a cell; determining a frequency priority coefficient of each basic frequency resource, the frequency priority coefficient representing interference from each neighboring cell that is adjacent to the cell in location with the cell in the basic frequency resource, and/or load of each neighboring cell in the basic frequency resource; and allocating frequency resources to the cell according to the frequency priority coefficients of the basic frequency resources. Also disclosed is a network device.