Joint Optimization of Admission Control and Rate Adaptation for Video Sharing over Multirate Wireless Community Cloud  

作　　者：Peng Zhao Xinyu Yang 

机构地区：[1]Department of Computer Science and Technology, Xi'an Jiaotong University

出　　处：《China Communications》2016年第8期24-40,共17页中国通信（英文版）

基　　金：sponsored by the following funds:the National Natural Science Foundation of China(No.61502381);the Fundamental Research Funds for the Central Universities(No.xjj2015065);the China Post Doctoral Science Foundation(No.2015M570836)

摘　　要：Emerging wireless community cloud enables usergenerated video content to be shared and consumed in a social context. However, the nature of shared wireless medium and timevarying channels seriously limits the quality of service(QoS), partially owing to the lack of mechanisms for effectively utilizing multi-rate channel resources. In this paper, the joint optimization of admission control and rate adaptation is proposed, resulting in a bandwidth-aware rate-adaptive admission control(BRAC) scheme to provide bandwidth guarantee for sharing social multimedia contents. The analytical approach leads to the following major contributions:(1) a bandwidth-aware rate selection(BRS) algorithm to optimally meet the bandwidth requirement of the data session and channel conditions at the physical layer;(2) a routing-coupled rate adaption and admission control algorithm to admit data sessions with bandwidth guarantee. Moreover, extensive numerical simulations suggest that BRAC is efficient and effective in meeting the bandwidth requirements for sharing social multimedia contents. These insights will shed light on communication system implementation for multimedia content sharing over multirate wireless community cloud.Emerging wireless community cloud enables usergenerated video content to be shared and consumed in a social context. However, the nature of shared wireless medium and time- varying channels seriously limits the quality of service （QoS）, partially owing to the lack of mechanisms for effectively utilizing multi-rate channel resources. In this paper, the joint opti- mization of admission control and rate adapta- tion is proposed, resulting in a bandwidth-aware rate-adaptive admission control （BRAC） scheme to provide bandwidth guarantee for sharing social multimedia contents. The analytical approach leads to the following major contributions： （1） a bandwidth-aware rate selection （BRS） algorithm to optimally meet the bandwidth requirement of the data session and channel conditions at the physical layer; （2） a routing-coupled rate adaption and admission control algorithm to admit data sessions with bandwidth guarantee. Moreover, ex- tensive numerical simulations suggest that BRAC is efficient and effective in meeting the bandwidth requirements for sharing social multimedia contents. These insights will shed light on communication system implementation for multimedia content sharing over multirate wireless community cloud.

关 键 词：wireless community cloud MULTIRATE rate adaptation bandwidth guarantee admission control 

分 类 号：TN92[电子电信—通信与信息系统]