Proposta de mobilidade para protocolos H.323 e SIP em telefonia IP, utilizando linguagem de especificação formal SDL orientada a objetos

AUTOR(ES)
DATA DE PUBLICAÇÃO

2004

RESUMO

This work describes some proposals for mobility extension to H.323 and SIP protocols. The new proposals for H.323 involve intrazone and interzone mobility, and interzone mobility using resources with new entities, signallings and functions from H.510. Based on the mobility solution developed by Liao, these new systems have demonstrated how H.323 could be extended in order to offer mobility using ad hoc multipoint conference for roaming and handoff during a call establishment between H.323 mobile terminals. The other proposal is a system with interzone mobility using multipoint conference with MCU for roaming and handoff during a call establishment between SIP mobile terminals. This system is based on Chen, Moh and Berquin mobility solution. All these systems were specified using the SDL object-oriented formal language with SDL TAU Suite tool. This tool allows the simulation of the systems with MSC diagrams and the validation of the systems by detecting and correcting logical and specification errors.

ASSUNTO(S)

sdl (specification and description language) simulation sdl (linguagem de programação de computador) redes de comoutação simulação (computadores digitais)

ACESSO AO ARTIGO

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