Mobile Terminal Location Registration Network Switching
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Solution Overview
Problem
Existing location registration methods for mobile communication terminals are hindered by network failures, leading to prolonged unavailability of location registration services, especially when network failures persist in 3G or LTE networks, and there is no overlap with other mobile communication networks, causing service disruptions.
Innovation Solution
A method where a mobile communication terminal retransmits a location registration request to the initial network if the second network is unavailable or if the registration in the second network is not completed, allowing for prompt reconnection to the first network upon potential recovery, thereby minimizing service downtime.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the mobile communication terminal switches to another mobile communication network for location registration when the first network fails, then the service availability is improved, but the device complexity and operation complexity increase
Solution Approach 1:
The patent implements dynamic network selection by enabling the terminal to automatically switch between first and second mobile communication networks based on real-time location registration status. The terminal monitors registration success/failure and dynamically adjusts its operational network, transforming a static single-network approach into a dynamic multi-network system that adapts to network conditions.
Solution Approach 2:
The patent changes the operational parameter of network selection from fixed to variable. The terminal modifies its communication network parameter based on location registration outcomes - using the first network when registration succeeds and switching to the second network when registration fails. This parameter change enables flexible adaptation to network conditions while maintaining service continuity.
2Reliability
If the mobile communication terminal continuously attempts location registration on the first network, then the service availability is improved, but the loss of time increases due to repeated failed registration attempts
Solution Approach 1:
The patent applies preliminary action by pre-configuring a second mobile communication network as a standby option before the first network actually fails. When location registration fails on the first network, the terminal immediately activates the pre-prepared second network for registration, avoiding the time loss that would occur from searching for alternative networks or repeatedly attempting failed registration on the first network.
Solution Approach 2:
The patent enables the terminal to skip repeated unsuccessful location registration attempts on the first network by immediately switching to the second network when registration fails. This skipping mechanism prevents wasting time on futile registration retries and rushes through the failure point by transitioning to an alternative network that may succeed.
3Reliability
If the mobile communication terminal switches networks for location registration, then the service continuity is improved, but the energy consumption increases due to frequent network switching
Solution Approach 1:
The patent applies partial action by implementing network switching only when necessary - specifically when location registration fails on the first network. The terminal does not continuously switch between networks or perform unnecessary registration attempts, but rather executes the switching action partially and selectively based on actual registration needs and failure conditions, thereby reducing unnecessary energy consumption.
Data Source
AI summary
Location information of a mobile communication terminal is registered promptly. When the mobile communication terminal receives a first location registration response signal, in which a predefined value indicative of a cause of rejecting the registration of the location information is set, the mobile communication terminal transmits a location registration request signal to a second mobile communication network when there is the second mobile communication network over which the mobile communication terminal can communicate, based on the predefined value. When it is determined that there is not the second mobile communication network or the location registration of the mobile communication terminal in the second mobile communication network is not completed, the mobile communication terminal carries out a first location registration operation of retransmitting the location registration request signal to the first mobile communication network.