SMS Routing via Alternative Addressing and DNS Lookup
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Solution Overview
Problem
Current SMS messaging systems require a Mobile Station ISDN Number (MSISDN) for routing SMS messages, which can lead to issues such as exhaustion of numbering schemes, inability to determine destination home networks and routing information without an MSISDN, and inefficiencies in using IP Multimedia Subsystem (IMS) for message delivery.
Innovation Solution
The system enables SMS messaging without relying on MSISDNs by using alternative addresses like URIs, URLs, NAIs, or IP addresses, allowing determination of destination home networks and routing information through domain name extraction and reverse DNS lookups, and incorporating new information elements in messaging protocols to support non-MSISDN addresses.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If MSISDN is used for routing SMS messages, then routing information can be determined, but numbering schemes will be exhausted and flexibility is reduced
Solution Approach 1:
The patent changes the addressing parameter from numeric MSISDN to alphanumeric identifiers (URNs, SIP URIs, email addresses). This allows the system to maintain routing functionality while expanding the address space beyond traditional phone numbers, thereby increasing adaptability without consuming additional numbering resources.
Solution Approach 2:
The patent enables a universal addressing scheme where a single identifier can serve multiple purposes - routing SMS messages, identifying users across different networks, and integrating with existing IP-based communication systems. This multi-functionality eliminates the need for separate numbering schemes while maintaining routing capabilities.
2Quantity of substance
If alternative addresses like URI or IP are used, then numbering exhaustion is avoided, but routing information cannot be determined without MSISDN
Solution Approach 1:
The patent introduces an intermediary mapping mechanism that translates alternative addresses (URI, IP addresses) into routing information. The system uses domain name extraction, reverse DNS lookups, or lookup tables to bridge between the alternative addressing scheme and the underlying network routing infrastructure, preventing loss of routing information while enabling expanded address space.
Solution Approach 2:
The patent performs preliminary resolution of alternative addresses into routable identifiers before message delivery. By pre-resolving URIs to IP addresses or performing reverse DNS lookups in advance, the system ensures routing information is available without requiring MSISDN, thus maintaining both expanded address space and complete routing capability.
3Adaptability or versatility
If IMS is used for message delivery, then alternative addressing is possible, but system complexity increases
Solution Approach 1:
The patent extracts the alternative addressing capability from the complex IMS architecture and implements it as a standalone SMS enhancement. By separating the addressing function from the full IMS stack, the system achieves adaptability without requiring the complete IMS infrastructure, thereby reducing overall system complexity while maintaining alternative addressing support.
Data Source
AI summary
A method for sending a short message service (SMS) message is provided. The method comprises receiving, by a destination home network database entity from a sending network entity, a first message containing an indication of support for a plurality of SMS message delivery protocols, wherein the SMS message is transmitted to a target entity address contained in the first message.