Dual-mode Mobile Terminal Base Station Selection via Throughput
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Solution Overview
Problem
In dual-mode mobile communication terminals operating in multiple cellular systems, it is challenging to determine which base station to communicate with to achieve high performance, especially when the terminal is located in cells of both 2G and 3G systems, as existing methods fail to select the appropriate system based on radio wave quality or throughput.
Innovation Solution
A communication system and terminal configuration that includes a throughput storage unit, radio wave quality measuring unit, and hand-over judging unit, which measures radio wave quality and throughput, and requests hand-over to a base station with higher throughput, allowing the control station to instruct hand-over processing between multiple mobile communication systems.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the mobile communication terminal selects a base station based on radio wave quality alone, then the communication reliability is improved, but the throughput and data communication quality deteriorate
Solution Approach 1:
The patent changes the selection parameter from radio wave quality alone to a combination of radio wave quality and throughput. The base station selection is performed by comparing both parameters, allowing the system to achieve both reliable communication and high data transmission rates by selecting base stations that optimize both criteria simultaneously.
2Adaptability or versatility
If the mobile communication terminal operates in dual mode with multiple communication systems, then the adaptability and service quality are improved, but the difficulty of selecting the appropriate base station increases
Solution Approach 1:
The patent creates a universal base station selection mechanism that works across multiple communication systems (2G, 3G, wireless LAN). The selection criteria based on radio wave quality and throughput are applied uniformly regardless of the communication system type, simplifying the dual-mode operation by providing a consistent decision-making framework across different technologies.
Solution Approach 2:
The patent introduces throughput as an additional selection parameter alongside radio wave quality. This multi-parameter approach enables the terminal to effectively evaluate and select base stations across different communication systems by considering both signal quality and data transmission capability, thereby managing the complexity of dual-mode operation systematically.
3Speed
If the mobile communication terminal communicates with wireless LAN base stations for high speed, then the communication speed is improved, but the cell coverage area decreases causing frequent hand-overs
Solution Approach 1:
The patent implements dynamic base station selection that adapts to the terminal's movement state. When the terminal is stationary or moving slowly, it prioritizes wireless LAN base stations for high-speed communication. When the terminal is moving quickly, the system dynamically switches to cellular base stations with larger coverage areas, reducing the frequency of hand-overs while maintaining appropriate communication speeds.
Solution Approach 2:
The patent uses throughput as a dynamic parameter in the base station selection process. By evaluating the throughput capability of available base stations alongside radio wave quality, the system can intelligently select between wireless LAN (high throughput, small cell) and cellular networks (lower throughput, large cell) based on current conditions, effectively managing the trade-off between communication speed and cell coverage.
Data Source
AI summary
A mobile communication terminal has a function of communicating with two types of base stations, for example, one base station belongs to the Global System for Mobile communications (GSM) and another base station belongs to the Wideband Code Division Multiple Access (WCDMA) system. The mobile communication terminal receives radio signal from a communicating base station and a neighboring base station, and measures received radio signal quality. Then, judging whether hand-over process is to be executed or not based upon comparison of the measured received radio signal quality and relationship between the received radio signal quality and data throughput.