Mobile Terminal Roaming Link Switching via Network Application
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Solution Overview
Problem
Current mobile network systems incur higher fees due to roaming or forwarding of communication links when mobile terminal devices are outside their designated local radio area, leading to inefficient and costly signal forwarding.
Innovation Solution
Mobile terminal devices determine their location within the network and inform a network application, which directs communication requests either to the local radio area or the device's current location, using standardized protocols like SIP to manage communication links efficiently and reduce roaming.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the mobile terminal device uses traditional roaming mechanisms to maintain communication outside the local radio area, then the communication link can be maintained, but higher fees are incurred due to signal forwarding between network areas
Solution Approach 1:
The mobile terminal device autonomously determines its own location relative to the local radio area using its positioning capabilities, and self-manages the communication link switching without requiring network-controlled roaming procedures. The device independently decides whether to maintain connection to the home base station or switch to a local base station based on its own location assessment.
Solution Approach 2:
Instead of the network determining roaming status and controlling handover decisions (traditional approach), the invention inverts the control by having the mobile terminal device determine its own roaming status and control the communication link switching itself. This reverses the traditional client-server control model for roaming management.
2Stability of the object's composition
If the network uses centralized roaming control to manage communication links, then network coordination is maintained, but communication attempts must be forwarded through multiple network nodes increasing complexity and cost
Solution Approach 1:
The invention segments the roaming control function by separating location determination (performed by the mobile device using its own sensors and signal analysis) from communication link management. This divides the traditionally centralized network control into independent device-level and network-level functions, reducing the complexity of signal forwarding through multiple network nodes.
Solution Approach 2:
The mobile terminal device performs preliminary location determination and assessment of communication options before initiating communication. By pre-determining whether it is in its local radio area or roaming, the device can pre-configure the appropriate communication path, avoiding complex real-time forwarding decisions through multiple network nodes during active communication.
3Loss of energy
If the mobile terminal device continuously monitors network area to optimize communication cost, then roaming fees are reduced, but additional energy consumption and processing overhead occur
Solution Approach 1:
The mobile terminal device performs location determination periodically or at predetermined intervals rather than continuously monitoring network area. This periodic assessment reduces energy consumption compared to continuous monitoring while still enabling timely detection of transitions between local and roaming areas to optimize communication cost.
Solution Approach 2:
The device uses copied or cached information from previous location assessments and network signaling to determine current status, rather than performing complete location analysis from scratch each time. This reduces processing overhead and energy consumption while maintaining accurate determination of communication cost status.
Data Source
AI summary
A mobile terminal device determines whether it is located in the local radio area of the network or in another radio area and the determined radio area is indicated to an application of the network. The application is used to control a communication request addressed to the mobile terminal device. Communication requests coming in on the network can be directly switched to the local radio area using the application or can be directly forwarded to the mobile radio address in the mobile radio network of which the mobile terminal device is located, thereby avoiding or substantially reducing roaming or forwarding of communication requests from the local radio area to another radio area and thereby achieving an economical operation of mobile telephone terminal devices with local radio area.