Satellite Proxy Network for Seamless SMS Routing
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Solution Overview
Problem
Current systems fail to facilitate seamless message routing between satellite and cellular networks, preventing message replies from being received by devices in satellite mode connected to a cellular network.
Innovation Solution
A satellite proxy network is established to receive special SMS messages or API calls when a dual-mode device transitions to satellite mode, registering with the Home Location Register as a Visitor Location Register Mobile Switching Center to manage and redirect SMS messages between satellite and cellular networks, ensuring continuous connectivity and message exchange.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a device switches to satellite mode for continuous connectivity, then coverage and reliability are improved, but message reply reception from cellular networks is lost
Solution Approach 1:
The patent introduces a satellite proxy network as an intermediary between satellite and cellular networks. When a device switches to satellite mode, the proxy network intercepts incoming cellular messages and forwards them to the device via satellite connection, enabling message reception while maintaining satellite mode operation.
2Adaptability or versatility
If a satellite proxy network is introduced to enable message routing, then message exchange between networks is improved, but device complexity increases
Solution Approach 1:
The satellite proxy network serves as a mediating entity that handles the complexity of inter-network message routing. It registers with the cellular network's HLR as a VMSC, intercepts messages destined for satellite-mode devices, and forwards them through satellite connections, thereby enabling seamless message exchange without requiring complex changes to end-user devices.
3Reliability
If the satellite proxy network maintains registration with HLR for message routing, then message delivery reliability is improved, but network resource consumption increases
Solution Approach 1:
The satellite proxy network implements periodic registration updates with the HLR rather than continuous maintenance. It sends registration requests at intervals and uses timeout mechanisms (5-30 minutes of inactivity) to determine when to purge device registrations, thereby reducing unnecessary network resource consumption while maintaining reliable message delivery during active satellite mode operation.
Data Source
AI summary
A system and method for delivering and receiving Short Message Service (SMS) messages between users connected to satellite and cellular networks. The system includes a communication device capable of operating in either satellite or cellular modes, a satellite service provider, a satellite proxy network, and a cellular operator. The method involves monitoring the network mode of the user device, relaying information about the user device's connection to the satellite network via a specially formatted SMS payload and registering the user device with a cellular operator when in satellite mode. The satellite proxy network serves as an anchoring point for sending and receiving SMS messages, ensuring seamless message exchange between satellite network users and cellular network users. The user device is designed to automatically switch between satellite and cellular modes based on network availability, ensuring continuous communication. This invention enables improved messaging services and enhances communication between users on different networks.