SMS Re-transmission via Multi-Access Type Switching
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Solution Overview
Problem
Current wireless communication systems face challenges in efficiently managing short message service (SMS) re-transmissions, particularly for devices registered with multiple access types, leading to potential message delivery failures due to limited access capabilities of wireless devices.
Innovation Solution
The proposed solution involves frameworks where the SMS function and mobility function collaborate to handle re-transmission instructions and access type selection, allowing for automatic switching between different access types if initial delivery attempts fail, ensuring successful message delivery by utilizing available access types.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If SMS messages are delivered through a single access type, then the delivery process is simple, but the message delivery fails when the primary access type is unavailable
Solution Approach 1:
The system dynamically changes the access type parameter based on availability. When the primary access type (e.g., cellular) is unavailable, the system switches to an alternative access type (e.g., Wi-Fi), thereby adapting the delivery parameter to current conditions and maintaining message delivery reliability without requiring complex manual configuration
Solution Approach 2:
The SMS function acts as an intermediary between the message source and the mobility function. It receives delivery status information from the mobility function and coordinates re-transmission requests, thereby simplifying the overall system complexity while enabling reliable multi-access type delivery through centralized coordination
2Adaptability or versatility
If the SMS function manages re-transmission and access type selection, then access type selection is centralized, but the mobility function lacks autonomy in delivery decisions
Solution Approach 1:
The system segments the SMS delivery management into distinct functional components: the SMS function handles high-level re-transmission coordination and policy decisions, while the mobility function handles low-level access type execution and status reporting. This segmentation allows each component to operate autonomously within its domain, reducing functional distribution complexity while maintaining adaptability
Solution Approach 2:
The system implements dynamic functional distribution where the SMS function and mobility function can adapt their roles based on operational context. The mobility function autonomously selects access types when the SMS function is unavailable, creating a dynamic system that balances centralized coordination with decentralized autonomy, thereby reducing complexity while preserving flexibility
3Reliability
If multiple access types are attempted for SMS delivery, then delivery reliability improves, but the time required for message delivery increases
Solution Approach 1:
The system performs preliminary actions by pre-configuring multiple access types and their priorities before delivery is needed. When message delivery is required, the system can immediately attempt the pre-configured primary access type without delay, and only if that fails does it proceed to alternative access types, thereby maintaining high reliability while minimizing delivery time through advance preparation
Solution Approach 2:
The system implements periodic delivery attempts with exponential backoff timing between retries. Instead of continuously attempting all access types simultaneously, it systematically cycles through available access types with increasing intervals between attempts, reducing overall delivery time while maintaining high probability of successful delivery through structured periodic retry behavior
Data Source
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AI summary
This disclosure relates to techniques for managing mobile-terminating short message service re-transmissions for wireless devices. A cellular network entity of a cellular network may receive a request to provide a short message service message to a wireless device. The wireless device may be registered with the cellular network entity via at least two access types. An attempt to provide the short message service message to the wireless device via a first access type may be performed. An attempt to provide the short message service message to the wireless device via a second access type may be performed if the attempt to provide the short message service message to the wireless device via the first access type is unsuccessful.