Inter-Working Function for Message Routing Without Terminal Addresses
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Solution Overview
Problem
In Machine Type Communication, allocating Mobile Subscriber Integrated Services Digital Network Number (MSISDN) to a large number of devices leads to resource waste, and existing methods like Short Message Service (SMS) cannot deliver messages to terminals without routing information.
Innovation Solution
A message transmission system using an Inter-Working Function (IWF) identified by a Representative Mobile Subscriber Integrated Services Digital Network Number (R-MSISDN) extracts the recipient's address, acquires routing information, and rebuilds the message to transmit it to the recipient terminal, enabling message delivery without pre-provided routing information.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If MSISDN is allocated to a large number of devices for SMS transmission, then message delivery capability is improved, but resource waste increases
Solution Approach 1:
The patent introduces an Inter-Working Function (IWF) as an intermediary entity that receives messages with R-MSISDN and translates them into messages with actual terminal addresses. The IWF acts as a mediator between the SMS system (which uses MSISDN) and the terminal addressing system, allowing message delivery without allocating MSISDN to each terminal. This resolves the contradiction by enabling message delivery capability through the intermediary while avoiding resource waste of MSISDN allocation.
Solution Approach 2:
The patent uses R-MSISDN as a copy or representation of the actual terminal address. Instead of using the real terminal address directly in SMS messages, the system uses R-MSISDN as a placeholder that can be translated by the IWF. This copying mechanism enables message routing without requiring actual MSISDN allocation to terminals, thus maintaining message delivery capability while preventing resource waste.
2Loss of substance
If MSISDN is not allocated to terminals for machine type communication, then resource waste is reduced, but message delivery capability deteriorates
Solution Approach 1:
The IWF serves as a mediator that bridges the gap between terminals without MSISDN and the SMS delivery system. It receives messages addressed to R-MSISDN, extracts the actual terminal addresses, and forwards messages to the correct terminals. This intermediary mechanism maintains message delivery capability while allowing terminals to operate without MSISDN allocation, thus reducing resource waste.
Solution Approach 2:
The patent extracts the actual terminal address information from the message and uses it for routing, while keeping R-MSISDN as the surface-level address for SMS compatibility. The IWF extracts the real address and separates the routing function from the addressing format, enabling message delivery to terminals without MSISDN while maintaining resource efficiency.
3Measurement precision
If SMS routing is based on recipient's MSISDN, then message routing accuracy is improved, but terminals without MSISDN cannot receive messages
Solution Approach 1:
The IWF acts as an intermediary translation layer between the MSISDN-based SMS routing system and terminals without MSISDN. It receives messages with R-MSISDN, performs address translation to extract actual terminal addresses, and forwards them appropriately. This maintains routing accuracy for the SMS system while extending compatibility to terminals without MSISDN.
Solution Approach 2:
The patent changes the addressing parameter from actual terminal address to R-MSISDN at the message transmission stage, then reverses the parameter change at the IWF by translating R-MSISDN back to the actual terminal address. This parameter transformation enables compatibility with both MSISDN-based routing and terminals without MSISDN, improving adaptability while maintaining routing accuracy.
Data Source
AI summary
A method and system for transmitting a message to a terminal is provided, and the method for transmitting a message in a message transmission system including an Inter-Working Function (IWF) identified by a Representative Mobile Subscriber Integrated Services Digital Network Number (R-MSISDN) according to an embodiment of the present invention includes transmitting, at transmission side, a message including the R-MSISDN and an address of a recipient terminal to the IWF; extracting, at the IWF, the address of the recipient terminal from the message; acquiring, at the IWF, routing information using the address of the recipient terminal; rebuilding, at the IWF, the message using the routing information; and transmitting, at the IWF, the rebuilt message to the recipient terminal based on the routing information. The method according to an embodiment of the present invention is advantageous to transmit a message in case where the recipient routing information is not provided.