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Publications (3)0 Total impact

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    ABSTRACT: In this paper, a traffic aggregation based SIP over MPLS network architecture is proposed to integrate SIP protocol with traffic engineering (TE) enabled MPLS network seamlessly and speed up the SIP call setup. We rely on OPNET simulation to assess the performance of this new network architecture. As a highlighted part, basic design concepts and implementation details of the simulation model are depicted intensively. The simulation results show that traffic aggregation based SIP over MPLS network architecture has satisfying performance in terms of SIP call setup delay, call blocking probability, and bandwidth utility efficiency.
    Simulation Symposium, 2005. Proceedings. 38th Annual; 05/2005
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    ABSTRACT: The next generation communication system will provide high quality multimedia service in a more flexible and intelligent manner. In this paper, we propose a new SIP over MPLS network architecture to achieve this goal. To integrate SIP protocol with the traffic engineering (TE) function of MPLS network seamlessly and facilitate SIP call setup, the SIP-MPLS traffic aggregation server (TA server) is highlighted in this new architecture. Furthermore, the call admission and bandwidth renegotiation algorithms running on the TA server are investigated carefully. We rely on OPNET simulation to assess the performance of our network architecture and the capability of different call admission and bandwidth renegotiation algorithms. The simulation results show that the algorithm of TBCA-BP is a suitable candidate for accomplishing the call admission and bandwidth renegotiation task due to its satisfying performance, and our network architecture is able to shorten the SIP call setup delay greatly by using the TA server.
    Advanced Information Networking and Applications, 2005. AINA 2005. 19th International Conference on; 04/2005
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    ABSTRACT: The next generation communication system will provide high quality multimedia service in a more flexible and intelligent manner. In this paper, we propose a new SIP over MPLS network architecture to achieve this goal. To integrate SIP protocol with the traffic engineering function of MPLS network seamlessly and facilitate SIP call setup, the SIP-MPLS traffic aggregation server (TA server) is highlighted in this new architecture. Furthermore, the call admission and bandwidth re-negotiation algorithms running on the TA server are investigated carefully. We rely on OPNET simulation to assess the performance of our network architecture and the capability of different call admission and bandwidth re-negotiation algorithms. The simulation results show that the algorithm of TBCA-BP is a suitable candidate for accomplishing the call admission and bandwidth re-negotiation task due to its satisfying performance, and our network architecture is able to shorten the SIP call setup delay greatly by using the TA server. Introd Introd Introd Introduction uction uction uction IP telephony is becoming one of the most promising research areas today, because both Internet Sevice Providers (ISP) and traditional telephony companies can benefit from this technology. There are two highly concerned issues on using IP network to carry audio/video traffic. The first one is the signaling protocol to control a call; the second one is how IP network provides real-time audio/video applications with QoS guaranteed service.