Journal of the Institute of Electronics Engineers of Korea TC (대한전자공학회논문지TC)

The Institute of Electronics and Information Engineers (대한전자공학회)
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A Mobile Multimedia System for IP-based Convergence Networks

IP 기반 통합망에서의 모바일 멀티미디어 시스템

  • Published : 2006.04.01
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Abstract

In this paper we propose an efficient mobile multimedia communication protocol, mobile terminal software platform and mobile VoIP application for IP-based convergence networks. The Proposed mobile multimedia communication protocol is called as ST-MRSVP (Split tunnel based Mobile Resource reServation Protocol) which integrates split tunnel based Mobile IP and RSVP in order to support hish speed mobility. Since mobile terminal platform supports QoS (Qualify of Service) with keeping seamless mobility, mobile QoS supporting modules are developed and interworked together by means of shared memory mechanism. Testbed is composed of a core-network embedding the proposed protocols and wireless LAN-based access networks. We verify functionality and performance of the proposed techniques by using various mobility test over the testbed. As a result, the proposed architecture can reduce the handover delay time with QoS support under 30% comparing with the standard mechanisms and support voice quality as good as CDMA phone.

본 논문에서는 IP기반의 통합망에서의 효율적인 모바일 멀티미디어 통신 프로토콜, 단말 소프트웨어 플랫폼 및 모바일 VoIP를 제안한다. 제안하는 모바일 멀티미디어 통신 프로토콜은 터널분할기반 모바일 자원예약 프로토콜이라 부르며, 이는 고속 이동성 지원을 위해서 터널분할 방식의 Mobile IP와 RSVP를 연동하고 있다. 또한, 통신품질을 유지하면서 끊어짐없는 핸드오버를 단말 플랫폼에서도 지원해야 하기 때문에 모바일 통신품질지원 모듈들을 단말플랫폼용으로 개발하고 공유메모리 방식을 통해 상호연동시킨다. 실험망으로는 제안하는 프로토콜을 실장한 코어네트워크와 무선랜 기반의 엑세스 네트워크들로 구성한다. 자체 개발한 모바일 VoIP를 이용하여 제안하는 기술들의 기능성과 성능을 다양한 이동성 실험을 통해 검증한다. 결론적으로 제안하는 방식이 기존 표준적 방식에 비해 30% 이하의 자원예약기반 핸드오프지연시간을 지원하여 CDMA 휴대전화와 동일한 수준의 음성통화품질을 제공한다.

Keywords

References

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