PoC Session Storage via Gateway Media Conversion

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Solution Overview

Problem

Current Push to Talk over Cellular (PoC) systems require new infrastructure for session storing and broadcasting, leading to high investment costs due to the immaturity of existing PoC Box infrastructure.

Innovation Solution

A method and system that reuse existing network resources by converting media streams into message patterns compatible with message storing modules, allowing for session storing and broadcasting, thereby reducing infrastructure costs.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If PoC Box infrastructure is established for session storing and broadcasting, then session storing and broadcasting function is achieved, but infrastructure investment cost increases significantly

Engineering Contradiction:
Improvesession storing and broadcasting functionVSAvoidinfrastructure investment
Core Design Contradiction:
ReliabilityVSQuantity of substance

Solution Approach 1:

The patent applies universality by enabling existing message storing modules (MMS/CPM boxes) to perform PoC session storing and broadcasting functions. Instead of building dedicated PoC Box infrastructure, the system makes existing message storing infrastructure multi-functional by integrating PoC protocol support and media stream conversion capabilities into conventional message storing modules, allowing them to serve both traditional messaging and PoC session management purposes

Inventive Principle:
Principle #6Universality (Multi-functionality)

Solution Approach 2:

The patent introduces a gateway transfer module as an intermediary between the PoC server and existing message storing modules. This gateway performs protocol conversion and media stream transformation, enabling communication between PoC systems and legacy message storing infrastructure without requiring direct integration or new infrastructure. The gateway acts as a mediator that translates PoC protocols into formats compatible with existing message storing systems

Inventive Principle:
Principle #24Intermediary (Mediator)

2Reliability

If new PoC Box infrastructure is built, then session storing and broadcasting capability is provided, but device complexity and implementation difficulty increase

Engineering Contradiction:
Improvesession storing and broadcasting capabilityVSAvoidinfrastructure complexity
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The patent reduces device complexity by making existing message storing modules multi-functional. These modules already have established storage, retrieval, and management capabilities for messages. By adding PoC protocol support and media stream conversion, they can handle both traditional SMS/MMS and PoC session data, eliminating the need for separate PoC Box infrastructure and reducing overall system complexity

Inventive Principle:
Principle #6Universality (Multi-functionality)

3Quantity of substance

If PoC session storing and broadcasting is implemented with existing resources, then investment cost is reduced, but compatibility with existing message storing formats must be ensured

Engineering Contradiction:
Improveinfrastructure investmentVSAvoidmessage format compatibility
Core Design Contradiction:
Quantity of substanceVSAdaptability or versatility

Solution Approach 1:

The gateway transfer module serves as an intermediary that handles format compatibility issues. It performs protocol conversion between PoC protocols and existing message storing formats (MMS/CPM). The gateway translates media streams into message formats that existing infrastructure can store and retrieve, ensuring compatibility without requiring changes to the underlying message storing systems

Inventive Principle:
Principle #24Intermediary (Mediator)

Solution Approach 2:

The patent applies parameter changes by transforming media stream parameters into message format parameters suitable for existing storage systems. The gateway converts continuous media streams into discrete message formats with appropriate encoding, sizing, and structure that match existing message storing module capabilities, enabling seamless integration across different formats and protocols

Inventive Principle:
Principle #35Parameter changes

Data Source

PatentUS8140100B2Method, system and apparatus for implementing push to talk over cellular session storing and broadcasting
Publication Date: 2012.03.20 HUAWEI TECH CO LTD
  • US8140100B2 patent drawing
  • US8140100B2 patent drawing
  • US8140100B2 patent drawing

AI summary

A system for storing and broadcasting PoC sessions includes: a message storing module, adapted to receive a media stream in a session, into the media stream into a pattern storable by the message storing module, and store the media stream to the message storing module; read the message from the message storing module, convert the message into a media stream, and send the media stream for participating in the session; and a gateway transfer module. A method and an apparatus for storing and broadcasting PoC sessions are also provided. The present invention enables storing and broadcasting of PoC sessions at lower cost.