SMS Transmission Domain Switching for Network Error Recovery

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Solution Overview

Problem

Short Message Service (SMS) transmission attempts in mobile networks are often rejected due to network-related errors, leading to a low success rate, particularly in packet-switched domains.

Innovation Solution

A method that resends a short message from a first device to a second device in the circuit-switched domain if the initial transmission attempt in the packet-switched domain is rejected due to network-related causes, and vice versa, to improve the success rate of SMS transmission.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If SMS is transmitted in the packet-switched domain, then transmission flexibility is improved, but transmission reliability deteriorates due to network-related errors

Engineering Contradiction:

Improvetransmission flexibilityVSAvoidtransmission reliability

Core Design Contradiction:

Adaptability or versatilityVSReliability

Solution Approach 1:

The patent introduces a domain switching mechanism as an intermediary between the packet-switched and circuit-switched domains. When SMS transmission in the packet-switched domain fails due to network-related errors, the system mediates by switching to the circuit-switched domain for retry, thereby resolving the reliability issue while maintaining the initial flexibility benefit

Inventive Principle:

Principle #24Intermediary (Mediator)

Solution Approach 2:

The patent changes the transmission domain parameter from packet-switched to circuit-switched when network errors occur. This parameter change allows the system to adapt to different network conditions and maintain transmission reliability by selecting the appropriate domain based on transmission success

Inventive Principle:

Principle #35Parameter changes

2Reliability

If multiple retry attempts are implemented across different domains, then transmission reliability is improved, but system complexity increases

Engineering Contradiction:

Improvetransmission reliabilityVSAvoidsystem complexity

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The patent segments the SMS transmission process into distinct domains (packet-switched and circuit-switched) with clear failure conditions for switching. This segmentation simplifies the retry logic by defining specific triggers for domain switching rather than implementing complex multi-domain retry algorithms

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

Instead of implementing complex error handling within a single domain, the patent inverts the approach by using domain switching as the error handling mechanism. When transmission fails in one domain, the system tries the other domain, simplifying the overall system complexity through this inverted strategy

Inventive Principle:

Principle #13The other way round (Inversion)

Data Source

PatentUS8971343B2Method of providing short message service in a network

Publication Date: 2015.03.03 ACER INC

AI summary

In a network implemented using packet-switching and circuit-switching mythologies, a short message is sent from a first device to a second device in a packet-switched domain or in a circuit-switched domain of the network. If an initial transmission attempt of the short message in the packet-switched domain is rejected due to a network-related cause, the short message is resent from the first device to the second device in the circuit-switched domain. If an initial transmission attempt of the short message in the circuit-switched domain is rejected due to a network-related cause, the short message is resent from the first device to the second device in the packet-switched domain or is directly aborted.