Master Mobile Station Relay for Disconnected Emergency Calls
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Solution Overview
Problem
In wireless communication systems, Mobile Stations (MS) disconnected from a Base Station (BS) due to collapsed cell areas cannot receive emergency call services, as existing technologies lack a reliable method to reconnect them.
Innovation Solution
A method and apparatus where a normal Mobile Station in a normal cell area acts as a master station to relay signals for disconnected MSs, determining and connecting them back to the BS through a rescue signal-based communication protocol, with the BS selecting suitable master MSs based on signal strength and system performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a Base Station (BS) provides emergency call service in a normal cell area, then MSs can receive emergency call service, but MSs in a collapsed cell area cannot receive emergency call service when disconnected from the BS
Solution Approach 1:
The patent introduces a master Mobile Station (MS) as an intermediary device that relays communication between disconnected MSs in collapsed cell areas and the Base Station. The master MS acts as a mediator that forwards signals, enabling emergency call services to reach MSs that would otherwise be completely disconnected from the network infrastructure.
Solution Approach 2:
The patent enables normal MSs to autonomously function as master MSs when they detect MSs in need of rescue. The system allows MSs to self-organize and provide relay services without requiring manual intervention or complex centralized control, with MSs automatically selecting and becoming master nodes based on local conditions.
2Reliability
If multiple normal MSs act as master MSs to support disconnected MSs, then more disconnected MSs can be supported, but system performance may deteriorate due to excessive master MSs
Solution Approach 1:
The patent implements dynamic control of the number of master MSs based on system conditions. The BS monitors and adjusts parameters such as the maximum number of master MSs allowed in the cell, and MSs transition between normal and master states based on signal strength thresholds and system commands, optimizing the balance between supporting disconnected MSs and maintaining overall system performance.
Data Source
AI summary
A method and apparatus support a Mobile Station (MS) located in a collapsed cell area to be disconnected from a Base Station (BS) in a wireless communication system. A method of an MS for supporting an disconnected MS disconnected from a BS in a wireless communication system includes receiving a rescue signal from the disconnected MS; collecting information to determine a support MS for the disconnected MS; and transmitting the collected information to a serving BS.