Cooperative Base Station Selection via Signal Strength and Cell Loading
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
In wireless communication systems, high-frequency bands lead to significant signal loss and rapid signal intensity changes, making it challenging to provide efficient communication services, especially with multi-base station cooperation schemes.
Innovation Solution
A method and apparatus for determining Base Stations (BSs) providing cooperative communication to a Mobile Station (MS) by selecting candidate BSs based on signal strength and cell loading state information, performing capability negotiations, and transmitting information on final member BSs to ensure improved service quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If high frequency band is used to support large capacity data service, then data service capacity is improved, but signal loss increases and link stability deteriorates
Solution Approach 1:
The patent combines multiple base stations into a cooperative communication system where BSs work together to serve a mobile station. This merging of resources allows the system to maintain high data capacity while improving link stability through coordinated transmission and reception across multiple stations, effectively compensating for the inherent instability of high-frequency bands.
Solution Approach 2:
The system dynamically changes operational parameters including selecting optimal base station combinations, adjusting transmission powers, and modifying resource allocation based on real-time channel conditions. This allows the system to adapt to the varying stability of high-frequency links while maintaining large data service capacity.
2Reliability
If multiple base stations cooperate to provide service, then service quality is improved, but system complexity increases
Solution Approach 1:
The mobile station autonomously measures signal strengths from multiple base stations and generates a candidate list of suitable BSs. This self-service approach reduces the complexity at the base station side, as the MS performs the initial evaluation and filtering, requiring the base stations to only participate in cooperation based on the MS-provided candidate list rather than complex centralized coordination.
Solution Approach 2:
The base station selection process is segmented into distinct phases: the MS first generates a candidate list based on signal measurements, then the serving BS selects final member BSs from this list through capability negotiation. This segmentation divides the complex multi-base station selection task into manageable sub-tasks performed by different entities, reducing overall system complexity.
3Speed
If base stations select members based on signal strength only, then selection speed is improved, but service quality deteriorates due to ignoring cell loading state
Solution Approach 1:
The selection criteria are changed from considering only signal strength to incorporating multiple parameters including signal strength and cell loading state. The mobile station measures both the received signal strength from candidate base stations and their loading states, then generates a candidate list that reflects this multi-parameter evaluation. This allows the system to maintain efficient selection while improving service quality by avoiding overloaded base stations.
Data Source
AI summary
A method of determining member Base Stations (BSs) providing cooperative communication to a Mobile Station (MS) in a communication system. The method includes when a candidate list of the member BSs generated using at least one of strengths of signals received from adjacent BSs and cell loading state information of the adjacent BSs is received from the MS, selecting candidate BSs having a service quality larger than or equal to a threshold from candidate BSs included in the candidate list as targets to receive a member negotiation; and performing a capability negotiation with each of the selected targets to receive the member negotiation to select final member BSs and transmitting information on the determined final member BSs to the MS.