Mobile Base Station Roaming Mode Switching
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Solution Overview
Problem
Mobile base stations face issues such as interference, regulatory infringement, and cost-related problems when roaming between different networks or crossing regulatory borders, as their fixed position assumptions are not met, leading to network planning challenges and increased operational costs.
Innovation Solution
A dual-mode mobile base station (mBS) that operates as a full base station within its network but switches to a limited relay mode, such as an amplify-forward, decode-forward, or diversity-providing relay node when roaming, using Software Defined Radio (SDR) to adapt to new configurations and avoid interference, allowing seamless operation across borders.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a mobile base station operates with full base station functionality when roaming, then service quality is maintained, but interference and regulatory infringement increase
Solution Approach 1:
The base station operates in dual modes: full base station functionality when stationary within home network, and limited relay node functionality when roaming. The system dynamically switches between these modes based on location and mobility state, allowing full functionality only when fixed position assumptions are met, thereby maintaining service quality while reducing interference and regulatory issues during roaming
Solution Approach 2:
Different functional capabilities are applied in different locations: full base station functionality is used when the mobile base station is stationary within its home network where it can meet fixed position assumptions, while limited relay node functionality is used when roaming. This localized adaptation of functionality resolves the contradiction between maintaining service quality and avoiding interference/regulatory infringement
2Area of stationary object
If a mobile base station operates as a full base station when roaming, then network coverage is maintained, but operational costs increase
Solution Approach 1:
The mobile base station is designed with multi-functionality, capable of operating both as a full base station and as a limited relay node. When roaming, it universally applies the relay node function which provides sufficient network coverage through collaboration with host network base stations, thereby maintaining adequate coverage while significantly reducing operational costs compared to full base station operation
3Adaptability or versatility
If a mobile base station switches operating modes based on location, then adaptability improves, but device complexity increases
Solution Approach 1:
The mobile base station autonomously determines its operating mode based on its own location and mobility state without requiring complex external control. The base station self-manages the switching between full base station and relay node modes, and self-configures appropriate parameters, thereby improving adaptability while minimizing the complexity increase that would result from external control mechanisms
Data Source
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AI summary
Methods, apparatuses, and computer program products for a mobile or roaming base station are described. An operating mode of a mobile base station is determined, based upon the mobile base station's current location and/or current mobility mode. The operating mode of the mobile base station is switched from a full base station functionality to a limited base station functionality, based upon the determining. A connection to a network is established by the mobile base station.