A study on TCP performance of crowdsourced live streaming

作     者：周建二 Wu Qinghua Li Zhenyu Xu Chuan Xie Gaogang 

作者机构：Institute of Computing TechnologyChinese Academy of SciencesBeijing 100190P.R.China University of Chinese Academy of SciencesBeijing 100049P.R.China College of CommunicationChongqing University of Post and TelecommunicationChongqing 400065P.R.China 

基　　金：Supported by the National Basic Research Program of China(2012CB315801) the National Natural Science Foundation of China(No.6157060397) 

出 版 物：《高技术通讯：英文版》 (High Technology Letters)

年 卷 期：2017年第23卷第1期

页      码：109-116页

摘      要：The prevalence of smart phone and improvement of wireless net promote the usage of crowdsourced live streaming,where individual users act as live streaming sources to broadcast themselves online. Characterizing the performance and identifying its bottleneck in such systems can shed light on the system design and performance optimization. TCP performance of a commercial crowdsourced live streaming system is examined by analyzing packet-level traces collected at streaming servers. TCP stalls that heavily hurt the Qo E of user have been identified. In particular,the TCP stalls account for as much as 31. 6% of the flow completion time for upload flows and result in abandonment of upload on the corresponding channels. Stalls caused by timeout retransmissions are further dissected and timeout retransmission characteristics are revealed to be dependent on the video encoding methods. These findings provide new insights in crowdsourced live streaming systems and can guide designers to improve the TCP efficiency.

主 题 词：流媒体服务器 TCP性能 直播系统 个人用户 超时重传 设计人员 无线网络 智能手机 

学科分类：08[工学] 0710[理学-生物科学类] 0831[工学-公安技术类] 0810[工学-土木类] 1205[管理学-图书情报与档案管理类] 0807[工学-电子信息类] 0805[工学-能源动力学] 0802[工学-机械学] 081001[081001] 0836[0836] 0811[工学-水利类] 0812[工学-测绘类] 0702[理学-物理学类] 

核心收录：

D　O　I：10.3772/j.issn.1006-6748.2017.01.015

馆 藏 号：203230065...