Cellular-Satellite Gateway for SMS Delivery Beyond Coverage
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Solution Overview
Problem
Existing SMS delivery methods fail to effectively reach mobile devices outside of cellular network coverage, leading to unsuccessful delivery attempts and message deletion without alternative delivery options.
Innovation Solution
A cellular-satellite gateway server is implemented to forward SMS messages from a telecommunications network to a satellite radio network, enabling broadcast delivery to satellite-enabled devices, with mechanisms for message reformating and encryption to ensure intended recipient receipt.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If SMS messages are delivered only through traditional telecommunications networks, then delivery success is achieved within cellular coverage areas, but messages cannot reach devices outside cellular network coverage
Solution Approach 1:
A cellular-satellite gateway server is introduced as an intermediary component between the telecommunications network and satellite radio network. This gateway receives undelivered SMS messages from the telecom network and forwards them to the satellite radio network for broadcast, enabling messages to reach devices outside cellular coverage areas.
Solution Approach 2:
The system enables SMS messages to be delivered through multiple channels - both traditional telecommunications networks and satellite radio networks. This multi-functional approach allows the same message delivery system to operate across different network types, expanding coverage to areas without cellular service.
2Reliability
If multiple delivery attempts are made on the telecommunications network, then delivery reliability is improved, but network resources are wasted when devices are unreachable
Solution Approach 1:
The system implements a feedback mechanism where the gateway server monitors delivery status of SMS messages. When the telecom network reports unsuccessful delivery after predetermined attempts, the gateway receives this feedback and automatically redirects the message to the satellite radio network, preventing further wasteful retry attempts on the unreachable device.
Solution Approach 2:
The gateway server is pre-configured with satellite radio network interface and message routing logic. When undelivered messages are detected, the system immediately has the capability to forward messages through the satellite channel without delay, ensuring continuous delivery progress while conserving resources.
3Area of stationary object
If SMS messages are broadcast on satellite radio networks, then coverage area is expanded beyond cellular networks, but message routing complexity increases
Solution Approach 1:
The message routing system is segmented into distinct functional components: the telecommunications network handles initial message delivery within cellular coverage, while the satellite radio network handles broadcast delivery in extended coverage areas. The gateway server acts as a separate routing decision point, dividing the overall delivery task between these two specialized networks.
4Adaptability or versatility
If satellite radio network is used for SMS delivery, then devices outside cellular coverage can receive messages, but ensuring message integrity and recipient identification becomes more difficult
Solution Approach 1:
Before broadcasting SMS messages on the satellite radio network, the gateway server pre-attaches unique identifiers corresponding to the intended recipient. This preliminary action ensures that when the broadcast message is received by multiple devices, each device can independently determine whether the message is intended for it based on the embedded identifier, maintaining message integrity without requiring post-delivery verification.
Data Source
AI summary
Methods, media, and systems are provided for delivering short messaging service (SMS) messages via a satellite radio network are provided. A cellular-satellite gateway (CSG) server is coupled to both the network of a terrestrial cellular telecommunications provider and to the network of a satellite radio provider. Once a requisite number of unsuccessful attempts for delivery have been made by the elements of the cellular network, the SMS message is forwarded to the CSG server. The CSG sends the text message to a specified satellite radio network. The satellite radio network broadcasts the text message so that it may be received by a satellite radio enabled device. Messages are filtered at the mobile device to ensure only the intended recipient receives the text message. Acknowledgment is sent the next time the mobile device connects to its cellular network.