CAJ | 학술논문

网络技术和图像语音处理技术的发展促进了多媒体通信技术的发展，随着分组交换网中多媒体通信研究的深入，多媒体流的适时性问题得到了特别的关注.在实时多媒体应用中，同包丢失率一样，时延也是一个重要的性能指标.在综合考虑多媒体业务的统计特性以及包丢失率和时延等QoS参数影响的基础上，给出了一个计算简单且便于实时带宽估计和管理的多媒体业务等效带宽的近似表达式，并讨论了相关参数对等效带宽的影响.
망락기술화도상어음처리기술적발전촉진료다매체통신기술적발전，수착분조교환망중다매체통신연구적심입，다매체류적괄시성문제득도료특별적관주.재실시다매체응용중，동포주실솔일양，시연야시일개중요적성능지표.재종합고필다매체업무적통계특성이급포주실솔화시연등QoS삼수영향적기출상，급출료일개계산간단차편우실시대관고계화관리적다매체업무등효대관적근사표체식，병토론료상관삼수대등효대관적영향.
The multimedia communication technology has been improved dramatically with the improvement of networking technology as well as audio/video processing technology. The real-time property of multimedia applications has attracted a lot of attention. Future integrated services networks will have to support applications with both diverse traffic characteristic and diverse performance requirements. The real-time multimedia application, which is delay-sensitive, faces the challenge of satisfying quality of service constraints. The delay is an important performance metric as well as packets loss probability(PLP), and the bandwidth estimation has become an important metric in call admission control (CAC) and congestion control (CC). In this paper, based on their statistical characteristics and with the PLP and the delay considered, a computationally simple approximation expression for the equivalent bandwidth of the multimedia applications, is proposed for real-time bandwidth estimation and management. The impacts of some relevant parameters are investigated.