Video over IEEE802.11 Wireless LAN: A Brief Survey  

IEEE802.11无线局域网视频流传输综述(英文)

作　　者：Chang Wen CHEN 冯正勇 

机构地区：[1]Department of Computer Science and Engineering, University at Buffalo, State University of New York [2]School of Physics and Electronic Information, China West Normal University [3]School of Communication and Information Engineering, University of Electronic Science and Technology of China

出　　处：《China Communications》2013年第5期1-19,共19页中国通信（英文版）

摘　　要：With relatively high transmission capacity and usually unconstrained connections, IEEE802.11 WLANs provide the ideal infrastructure for pervasive video content sharing and communications. However, the delivery of high-performance video streams over 802.11 WLANs remains a challenging task due to the inherent characteristics of compressed video and dynamic channels. In this paper, we present a brief survey of various recent innovations that have been developed to enhance the Quality of Service (QoS) performance for video over WLANs. Based on the application scenarios, the solutions have focused mainly on three network layers, that is, Application layer (APP), Media Access Control layer (MAC), and Physical layer (PHY). After reviewing the video compression technology, we first examine various single-layer solutions for video over WLANs. We then discuss several cross-layer solutions that take advantage of mutual interactions between different network layers. Finally, several technical issues beyond QoS performance, including energy and security, are also addressed. We conclude that the application of video over WLANs will continue to increase in future.With relatively high transmission capacity and usually unconstrained connections, IEEE802.11 WLANs provide the ideal infrastructure for pervasive video content sharing and communications. However, the delivery of high-performance video streams over 802.11 WLANs remains a challenging task due to the inherent characteristics of compressed video and dynamic channels. In this paper, we present a brief survey of various recent innovations that have been developed to enhance the Quality of Service （QoS） performance for video over WLANs. Based on the application scenarios, the solutions have focused mainly on three network layers, that is, Application layer （APP）, Media Access Control layer （MAC）, and Physical layer （PHY）. After reviewing the video compression technology, we first examine various single-layer solutions for video over WLANs. We then discuss several cross-layer solutions that take advantage of mutual interactions between different network layers. Finally, several technical issues beyond QoS performance, including energy and security, are also addressed. We conclude that the application of video over WLANs will continue to increase in future.

关 键 词：IEEE802.11 WLANs  video delivery  QoS  cross-layer solutions 

分 类 号：TN925.93[电子电信—通信与信息系统]