Spectrum Manager for Dynamic Base Station Clustering
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Solution Overview
Problem
Existing wireless communication systems face challenges in efficiently allocating shared frequency spectrum between operators due to network deployment complexities, leading to suboptimal spectrum usage and increased costs, especially in scenarios with non-ideal network deployments where co-channel interference occurs.
Innovation Solution
A spectrum manager dynamically groups base stations into clusters based on spectrum demand and allocates orthogonal frequency spectrum fragments to minimize interference, allowing flexible adaptation to traffic demands while managing co-channel interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If frequency spectrum is allocated exclusively to operators, then quality of service is guaranteed and interference is managed, but spectrum shortage arises and spectrum usage efficiency decreases
Solution Approach 1:
The patent implements dynamic spectrum sharing where operators can flexibly access spectrum resources based on real-time demand. The system transitions from static exclusive allocation to dynamic shared access, allowing spectrum to be reallocated among operators according to varying traffic requirements while maintaining QoS through coordinated resource management.
Solution Approach 2:
The system changes the allocation parameter from fixed exclusive rights to flexible shared access with controlled interference. By adjusting interference management parameters and coordination mechanisms, the system enables multiple operators to utilize the same spectrum band simultaneously while maintaining acceptable service quality.
2Productivity
If frequency spectrum is shared between operators, then spectrum usage efficiency improves and flexibility increases, but interference management becomes complex and QoS guarantee becomes difficult
Solution Approach 1:
The patent introduces a coordination mechanism that acts as an intermediary between operators sharing spectrum resources. This mediator manages interference by coordinating spectrum access, allocating resources dynamically, and ensuring QoS requirements are met, thereby reducing the complexity burden on individual operators while enabling efficient spectrum sharing.
Solution Approach 2:
The system implements feedback mechanisms where operators report their spectrum usage and interference conditions to the coordination mechanism. Based on this feedback, the system dynamically adjusts spectrum allocation and interference management strategies, enabling adaptive control that maintains QoS while maximizing spectrum efficiency.
3Object-affected harmful factors
If orthogonal frequency spectrum fragments are allocated to operators, then co-channel interference is minimized, but spectrum flexibility and adaptability to traffic demands decrease
Solution Approach 1:
The patent implements dynamic spectrum fragment allocation where orthogonal frequency fragments are assigned based on real-time traffic demands and interference conditions. Rather than fixed orthogonal allocation, the system dynamically adjusts which operators receive which frequency fragments, maintaining interference minimization while adapting to varying spectral requirements.
Solution Approach 2:
The system segments the frequency spectrum into multiple fragments that can be orthogonally allocated to different operators. This segmentation enables interference minimization through orthogonal assignment while the flexible combination and reallocation of these segments provide adaptability to different traffic scenarios and network conditions.
Data Source
AI summary
A spectrum manager for allocating a shared frequency spectrum in a wireless communication system is disclosed. The wireless communication system comprises a plurality of base stations which are operated by at least two operators, said spectrum manager being configured to group the plurality of base stations into clusters based on spectrum demand related information; and determine a spectrum partition pattern for each cluster based on the spectrum demand related information and information of the grouped based station clusters, a spectrum partition pattern specifying the partition and allocation of frequency spectrum fragments to said at least two operators in a corresponding cluster, wherein a frequency spectrum fragment is allocated to only one of said at least two operators in each cluster, and forward information regarding the spectrum partition pattern to the plurality of base stations or to one or a plurality of network entities of the at least two operators.