Bandwidth-Efficient Multipath Transport Protocol for Quality-Guaranteed Real-Time Video Over Heterogeneous Wireless Networks

被引:49
|
作者
Wu, Jiyan [1 ,2 ]
Yuen, Chau [3 ]
Cheng, Bo [1 ]
Yang, Yuan [4 ]
Wang, Ming [1 ]
Chen, Junliang [1 ]
机构
[1] Beijing Univ Posts & Telecommun, State Key Lab Networking & Switching Technol, Beijing 100876, Peoples R China
[2] OmniVis Technol Singapore Pte Ltd, Dept Res & Dev, Singapore 068898, Singapore
[3] Singapore Univ Technol & Design, Engn Prod Dev Pillar, Singapore 487372, Singapore
[4] Southeast Univ, Sch Instrument Sci & Engn, Nanjing 211189, Jiangsu, Peoples R China
基金
新加坡国家研究基金会; 中国国家自然科学基金;
关键词
Multipath transport; heterogeneous wireless networks; bandwidth-efficiency; real-time video communication; RAPTOR; TRANSMISSION; AGGREGATION; CONGESTION; ALLOCATION; SCHEME; CODES; TCP;
D O I
10.1109/TCOMM.2016.2553138
中图分类号
TM [电工技术]; TN [电子技术、通信技术];
学科分类号
0808 ; 0809 ;
摘要
Recent technological advancements in wireless infrastructures and handheld devices enable mobile users to concurrently receive multimedia contents with different radio interfaces (e.g., cellular and Wi-Fi). However, multipath video transport over the resource-limited and error-prone wireless networks is challenged with key technical issues: 1) conventional multipath protocols are throughput-oriented, and video data are scheduled in a content-agnostic fashion and 2) high-quality real-time video is bandwidth-intensive and delay-sensitive. To address these critical problems, this paper proposes a bandwidth-efficient multipath streaming (BEMA) protocol featured by the priority-aware data scheduling and forward error correction-based reliable transmission. First, we present a mathematical framework to formulate the delay-constrained distortion minimization problem for concurrent video transmission over multiple wireless access networks. Second, we develop a joint Raptor coding and data distribution framework to achieve target video quality with minimum bandwidth consumption. The proposed BEMA is able to effectively mitigate packet reordering and path asymmetry to improve network utilization. We conduct performance evaluation through extensive emulations in Exata involving real-time H.264 video streaming. Compared with the existing multipath protocols, BEMA achieves appreciable improvements in terms of video peak signal-to-noise ratio, end-to-end delay, bandwidth utilization, and goodput. Therefore, BEMA is recommended for streaming high-quality real-time video to multihomed terminals in heterogeneous wireless networks.
引用
收藏
页码:2477 / 2493
页数:17
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