Access Terminal SMS Routing via Domain Preference Indication
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current communication systems face challenges in effectively routing Short Message Service (SMS) traffic over different domains, such as IP and circuit-switched domains, without clear indications of preferred domains, leading to inefficiencies in message delivery.
Innovation Solution
An access terminal is configured with an indication to preferentially route SMS traffic over an IP domain, such as IMS, and if that fails, it attempts to route it over a non-access stratum (NAS) domain, registering with a Mobile Switching Center as necessary, based on an indication generated by a network entity like a home operator.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If SMS traffic is routed over IP domain without clear domain preference indications, then domain selection flexibility is improved, but message delivery reliability deteriorates due to uncertainty in domain selection
Solution Approach 1:
The network entity pre-configures the access terminal with an indication specifying the preferred domain for SMS traffic before actual SMS transmission occurs. This preliminary configuration enables the terminal to make reliable domain selection decisions without real-time network intervention, resolving the contradiction between flexibility and reliability.
2Reliability
If the access terminal attempts multiple domain routes (IMS then NAS) for SMS delivery, then message delivery reliability is improved, but signaling overhead and processing time increase
Solution Approach 1:
The terminal uses the pre-configured domain preference indication to select the appropriate domain before attempting SMS transmission. By making the domain selection decision in advance based on the indication, the terminal avoids unnecessary trial-and-error attempts across multiple domains, thereby reducing signaling overhead and processing time while maintaining reliable delivery.
3Productivity
If the access terminal is configured with domain preference indication, then SMS delivery efficiency is improved, but device configuration complexity increases
Solution Approach 1:
The network entity automatically provides the domain preference indication to the access terminal during initial configuration or registration. The terminal simply stores and applies this indication without requiring user intervention or complex configuration management, thereby improving SMS delivery efficiency while keeping device complexity low.
Data Source
AI summary
An indication is used to control how message service information is routed over different domains. For example, an access terminal may be configured with an indication that indicates that a message service is preferred to be invoked over an IP domain or that the message service is not be invoked over the IP domain. The access terminal then delivers message service information based on the value of the indication. In some cases, a network entity generates the indication and sends the indication to the access terminal. In some cases, a domain for delivery of message service information is selected based on a domain that was selected for particular type of traffic.