IP-SM-GW Short Message Resend Mechanism
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Solution Overview
Problem
In machine-to-machine (M2M) communications, conventional short message services face challenges when a receiver is unavailable, leading to failed message transmissions, as they rely on Mobile Station International Public Switched Telephone Network/Integrated Services Digital Network (MSISDN) numbers, which M2M terminals do not possess, resulting in incomplete message delivery.
Innovation Solution
Implementing a method where an Internet Protocol Short Message Gateway (IP-SM-GW) stores short messages when a failure occurs and resends them once the receiver becomes available, utilizing a service center to manage and retransmit the messages within the IMS domain.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If short message transmission is performed in IMS domain without MSISDN, then M2M communication capability is improved, but message delivery reliability deteriorates when receiver is unavailable
Solution Approach 1:
The IP-SM-GW performs preliminary actions by detecting receiver unavailability before message delivery fails, storing the message in a queue, and initiating retry mechanisms. This proactive approach prevents message loss and ensures reliable delivery once the receiver becomes available, resolving the contradiction between M2M adaptability and delivery reliability.
Solution Approach 2:
The IP-SM-GW acts as an intermediary between the sender and receiver in IMS domain. It mediates message transmission by buffering messages when receivers are unavailable and forwarding them when receivers are available, thereby maintaining reliable message delivery while supporting M2M communication without MSISDN.
2Device complexity
If short message is not stored when transmission fails, then system complexity is reduced, but message loss occurs when receiver becomes available
Solution Approach 1:
The IP-SM-GW provides self-service by automatically detecting transmission failures, storing messages locally in its queue, and initiating retry transmissions without external intervention. This self-managed approach prevents message loss while maintaining relatively simple system architecture, resolving the contradiction between system complexity and information loss prevention.
Data Source
AI summary
A method for implementing resending of a short message includes, when an Internet Protocol short message gateway (IP-SM-GW) learns that in an Internet Protocol multimedia subsystem (IMS) domain, a short message fails to be sent to a receiver, sending, by the IP-SM-GW, the short message to a service center, so that the service center stores the short message; and when the receiver corresponding to the short message changes to available status, receiving, by the IP-SM-GW, the stored short message sent by the service center, and resending the short message to the receiver through the IMS domain, thereby implementing resending of a short message request failing to be sent, improving availability of sending the short message request in the IMS, and improving user experience.