Bandwidth Resource Allocation in Mobile Communication Systems
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Solution Overview
Problem
Current bandwidth resource allocation methods in multicarrier mobile communication systems fail to efficiently utilize bandwidth due to non-uniform user and service distribution, leading to excessive resource allocation in some sectors and shortages in others, without adequately considering interference from adjacent cells.
Innovation Solution
A method that divides sector bandwidth into private and public resources, allowing public resources to be borrowed or multiplexed from adjacent sectors, prioritizing allocation to central areas to maximize resource utilization while minimizing interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If static channel allocation is used to simplify bandwidth resource allocation, then device complexity is reduced, but frequency spectrum utilization deteriorates due to inability to handle non-uniform user distribution
Solution Approach 1:
The bandwidth resource is segmented into two distinct parts: static bandwidth resource (dedicated to each sector) and dynamic bandwidth resource (shared among sectors). This segmentation allows the system to combine the simplicity of static allocation with the flexibility of dynamic allocation, resolving the contradiction between allocation complexity and spectrum utilization efficiency
Solution Approach 2:
The patent introduces dynamic bandwidth resource that can be flexibly allocated among sectors based on real-time traffic conditions. This dynamic component enables the system to adapt to non-uniform user distribution while maintaining a static baseline allocation, thus improving frequency spectrum utilization without excessive complexity
2Productivity
If dynamic channel allocation is used to improve frequency spectrum utilization, then frequency spectrum utilization is improved, but device complexity increases due to complex algorithms
Solution Approach 1:
By dividing bandwidth into static and dynamic portions, the patent reduces algorithmic complexity. The static portion handles baseline allocation simply, while the dynamic portion uses simplified rules for inter-sector borrowing based on traffic conditions, avoiding the need for complex centralized optimization algorithms
3Productivity
If bandwidth resource is borrowed from adjacent sectors to improve resource utilization, then frequency spectrum utilization is improved, but interference to adjacent cells increases
Solution Approach 1:
The patent applies local quality by differentiating between central area users and edge area users. Central area users are prioritized for bandwidth borrowing from adjacent sectors, while edge area users are protected by maintaining dedicated resources. This spatial differentiation allows resource borrowing without excessive interference to adjacent cells
4Productivity
If public bandwidth resource is allocated to central area users to enable multiplexing, then frequency spectrum utilization is improved, but interference to adjacent cells increases
Solution Approach 1:
The patent implements local quality by allocating public bandwidth resources specifically to central area users who are geographically separated from adjacent cell boundaries. This spatial localization reduces interference to adjacent cells while enabling effective multiplexing in the central region where signal strength is stronger and interference control is more effective
Data Source
AI summary
The invention discloses a method and an apparatus of bandwidth resource allocation in a mobile communication system. The methods is used for dividing sector bandwidth resource into private bandwidth resource for only users in its own sector and a public bandwidth resource. The bandwidth resource in the public bandwidth resource which is not allocated to users in its own sector for use can be lent to other sectors, and bandwidth resource in the public bandwidth resource which has been allocated to users, located at a central area, of its own sector for use can be multiplexed by other sectors. The method of bandwidth resource allocation in a mobile communication system according to the present invention utilizes the resource of the adjacent cells efficiently, and resolves the interference among cells due to the bandwidth resource borrowing/multiplexing.