SMS Delivery Over Wireless Packet Data Network

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Solution Overview

Problem

Current short messaging services (SMS) share network resources with voice traffic, leading to increased load on mobile switching centers (MSCs) and potential impact on voice call processing as more SMS applications are adopted.

Innovation Solution

Implementing systems and methods to deliver SMS over a wireless packet data network, allowing SMS traffic to be processed independently or using voice network as a backup, thereby reducing the load on MSCs and optimizing network resource utilization.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If SMS traffic is processed through the voice network using MSC, then SMS service is provided, but the load on MSC increases and voice call processing capability deteriorates

Engineering Contradiction:

ImproveSMS service availabilityVSAvoidvoice call processing capability

Core Design Contradiction:

ReliabilityVSProductivity

Solution Approach 1:

The patent segments SMS traffic from voice traffic by introducing a separate packet data network path for SMS messages. The SMS service center (SMSC) is divided into separate functional components that can process SMS over data networks independently from the voice network, allowing simultaneous handling of both SMS and voice calls without mutual interference.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The patent introduces a packet data network and SMS gateway as intermediary components between the SMSC and the mobile device. These intermediaries enable SMS messages to be transported over the data network rather than directly through the voice network, reducing the load on MSC while maintaining SMS service functionality.

Inventive Principle:

Principle #24Intermediary (Mediator)

2Adaptability or versatility

If more SMS applications are adopted, then SMS traffic increases, but the MSC's ability to process voice calls decreases

Engineering Contradiction:

ImproveSMS application supportVSAvoidvoice call processing capacity

Core Design Contradiction:

Adaptability or versatilityVSProductivity

Solution Approach 1:

The patent adds a new dimension to SMS transport by utilizing the packet data network infrastructure alongside the traditional voice network. This dimensional addition allows SMS traffic to flow through a separate channel, enabling the system to support increased SMS applications without compromising voice call processing capacity.

Inventive Principle:

Principle #17Another dimension (Dimensionality change)

Solution Approach 2:

The packet data network is utilized for multiple purposes: it serves as the primary transport for SMS messages while also supporting data applications. This multi-functionality allows the network to handle both SMS traffic and other data services efficiently, accommodating growing SMS applications without impacting voice network performance.

Inventive Principle:

Principle #6Universality (Multi-functionality)

Data Source

PatentUS8805424B2SMS over wireless packet data network

Publication Date: 2014.08.12 VERIZON PATENT & LICENSING INC

AI summary

A system may include one or more network devices. The one or more network devices may receive a short message service (SMS) message intended for an access terminal, embed the SMS message into a data message, determine whether a data session exists with the access terminal, the data session occurring over a data network, transmit the data message to the access terminal via the data network when the data session exists, and transmit the SMS message via a voice network when the data session does not exist.