Mobile Communication Device Fallback Cell Handover
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Solution Overview
Problem
Home Node B base stations experience reliability issues due to flexibility, leading to prolonged communication interruptions when switched off or losing power, as existing solutions result in dropped connections during calls, similar to conventional mobile communication networks in areas without coverage.
Innovation Solution
Implement methods to quickly establish a wireless connection to a fallback cell by determining and storing parameters for neighboring cells, switching to a backup power source if necessary, and transmitting messages to mobile devices to switch to a fallback cell when the primary base station stops operating.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If the base station is switched off or loses power, then energy consumption is reduced, but communication interruption time increases
Solution Approach 1:
The system performs preliminary actions by determining fallback cells and obtaining parameters for quickly establishing wireless connections before the base station actually stops operating. When the base station detects it will be switched off or loses power, it proactively prepares handover information and notifies mobile devices in advance, allowing them to switch to fallback cells without interruption to the call context.
2Duration of action of stationary object
If the base station switches to backup power source, then operation continuity is maintained, but energy resources are depleted
Solution Approach 1:
The base station determines fallback cells and prepares handover parameters in advance, before actually switching to backup power. This preliminary preparation allows for a smooth transition that minimizes the duration of backup power usage, as the system can quickly complete the handover process once the decision to switch power sources is made.
Solution Approach 2:
The fallback cell acts as an intermediary that receives mobile devices during the transition from primary to backup power operation. By establishing predetermined parameters for quick connection to fallback cells, the system mediates the power transition in a way that maintains service continuity while controlling backup power consumption.
3Speed
If parameters for quick connection establishment are obtained, then connection re-establishment speed is improved, but system complexity increases
Solution Approach 1:
The system obtains parameters for quickly establishing wireless connections to fallback cells in advance, before actual handover is needed. This preliminary acquisition of parameters (including cell identification, frequency information, and access details) stores essential connection data that enables rapid reconnection without requiring complex real-time searches or negotiations when handover becomes necessary.
Data Source
AI summary
A method and mobile communication device that reduce communication interruption time when a base station stops operating are described. The mobile communication device is wirelessly connected to a cell operated by a base station. The method includes determining a fallback cell, obtaining parameters to quickly establish a wireless connection to the fallback cell, determining that the base station is stopping operation, and using the parameters to quickly establish a wireless connection to the fallback cell. Also described are a base station and method for the base station to reduce communication interruption time. The method includes determining that the base station is stopping operation, switching to a backup power source if the base station is stopping operation due to loss of power, and transmitting a message to the mobile communication devices connected to the base station that they should switch to a fallback cell, since the base station is stopping operation.