Listener Proxy Termination for Trunking Conference Bridge Resource Optimization

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Solution Overview

Problem

The existing trunking communication systems, particularly in GSM and UMTS networks, face inefficiencies in resource utilization and increased complexity due to the large number of terminations required for Voice Broadcast Service (VBS) and Voice Group Call Service (VGCS), leading to high consumption of conference resources and interoperability issues with the Media Gateway (MGW) and MSC server.

Innovation Solution

Implementing a method that establishes a listener proxy termination in the conference bridge context to send the caller's voice to listener terminals, reducing the number of terminations and using listener bearers to connect listener terminals, thereby optimizing resource usage within the H.248 standard without extending new packages.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If each listener terminal is connected directly to the conference bridge context as a separate termination, then the voice transmission path is simple and direct, but the number of terminations increases significantly, consuming excessive conference resources

Engineering Contradiction:
Improvevoice transmission reliabilityVSAvoidnumber of terminations
Core Design Contradiction:
ReliabilityVSQuantity of substance

Solution Approach 1:

The patent introduces a listener proxy termination as an intermediary between the conference bridge context and multiple listener terminals. This proxy termination receives the caller's voice once from the conference bridge and then distributes it to multiple listener terminals, eliminating the need for each listener to have a separate direct connection to the conference bridge. This resolves the contradiction by maintaining reliable voice transmission through the proxy while significantly reducing the number of terminations required in the conference bridge context.

Inventive Principle:
Principle #24Intermediary (Mediator)

2Adaptability or versatility

If a large number of terminations are established in the conference bridge context to support all listener terminals, then all listeners can receive voice directly, but the consumption of conference audio mixing resources increases

Engineering Contradiction:
Improvelistener coverageVSAvoidconference resource consumption
Core Design Contradiction:
Adaptability or versatilityVSLoss of energy

Solution Approach 1:

The listener proxy termination serves as a mediator that consolidates the voice distribution function. Instead of the conference bridge context directly managing multiple listener terminations (which would consume excessive audio mixing resources), the proxy termination handles the distribution to multiple listeners. This maintains full listener coverage while dramatically reducing conference resource consumption by limiting the number of terminations in the conference bridge context to just one proxy termination.

Inventive Principle:
Principle #24Intermediary (Mediator)

3Adaptability or versatility

If the system supports a large number of simultaneous listeners in VBS/VGCS services, then the service coverage is expanded, but the system complexity and topology management difficulty increase

Engineering Contradiction:
Improveservice coverageVSAvoidtopology management complexity
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The listener proxy termination simplifies topology management by serving as a single intermediary point between the conference bridge and multiple listeners. The system topology becomes: conference bridge context → listener proxy termination → multiple listener terminals. This hierarchical structure dramatically reduces management complexity compared to a flat structure where the conference bridge directly connects to each listener, while still supporting large numbers of simultaneous listeners and expanding service coverage.

Inventive Principle:
Principle #24Intermediary (Mediator)

Data Source

PatentEP2061268B1Method and system to achieve cluster communication service
Publication Date: 2013.02.20 HUAWEI TECH CO LTD
  • EP2061268B1 patent drawingFigure 1~2
  • EP2061268B1 patent drawingFigure 3~4
  • EP2061268B1 patent drawingFigure 5

AI summary

A method to achieve cluster communication service is disclosed, which reduces the number of terminals in a conference context. When a caller initiates cluster call, the method as above includes: establish a caller bearer and the conference bridge context, connect a caller terminal to the conference bridge context using the caller bearer; establish a listener agent terminal in the conference bridge context, then transmit voice for the caller to a listener terminal using the listener agent terminal; establish a listener bearer, then connect the listener terminal to the listener agent terminal of the conference bridge context using the listenerbearer. Furthermore, the invention provides a system to achieve cluster communication service, cluster communication method and cluster communication system. It may reduce the number of terminals in the conference bridge context by using the listener agent in the conference bridge context, thereby, it may reduce the number of conference mixing voice resource used in the cluster service largely.