QoS Guaranteed Pre-Pushing Scheme in Peer-Assisted Streaming Network  

作　　者：LIN Fuhong LU Xing 

机构地区：[1]School of Computer and Communication Engineering, University of Science and Technology Beijing, Beijing, 100083, P. R. China [2]School of Science, Beijing Jiaotong University, Beijing, 100044, P. R. China

出　　处：《China Communications》2014年第A02期111-117,共7页中国通信（英文版）

基　　金：the National Natural Science Foundation of China under Grant No.61202079,61308018，the China Postdoctoral Science Foundation under Grant No.2014T70031，the Fundamental Research Funds for the Central Universities under Grant No.FRF-TP-14-046A2

摘　　要：In peer-assisted streaming network, service provider needs to pre-pushing resources to some users for caching. This scheme can increase the resource availability. In traditional strategy, in order to guarantee the user＇s quality of service （QoS）, the pre-pushing action can only start at the time point that the certain user has not used the computer for more than 20 minutes. If the user comes back, the pre-pushing action will be stopped. We claim that this is not an efficient scheme. In this paper, we propose a novel pre-pushing scheme to improve the pre-pushing efficiency, while meeting the user＇s QoS requirements. The basic idea is using the user＇s available bandwidth as much as possible in the condition of meeting the user＇s QoS requirements. Then we design an available bandwidth calculating strategy. The numerical simulation demonstrates that our proposed scheme outperforms the traditional one.

关 键 词：peer-assisted streaming network downlink bandwidth pre-pushing available bandwidth 

分 类 号：TP393[自动化与计算机技术—计算机应用技术] TN915[自动化与计算机技术—计算机科学与技术]