RATE ALLOCATION FOR MULTI-CAMERA SURVEILLANCE OVER AN AD HOC WIRELESS NETWORK

We propose a dynamic rate allocation scheme among multiple video sources over an ad hoc wireless network. With a total rate constraint capturing the media access characteristic of an 802.11 network and the selected route for each sender, our rate allocation algorithm minimizes the weighted sum of video distortion for all sources. The optimization is performed at the common receiver of the video streams and the decision is based on a simple rate-distortion model of video and a fast algorithm to classify the activity level of the raw video content. Experimental results for a video surveillance scenario demonstrate that the proposed scheme outperforms a simple fixed quality scheme and the conventional TCP-friendly rate control. For most cameras, the average PSNR of received video quality in the active periods from the proposed scheme exceeds those from the two competing schemes by a margin of 1.2 7.1 dB.

[1]  Shivendra S. Panwar,et al.  Video transport over ad hoc networks: multistream coding with multipath transport , 2003, IEEE J. Sel. Areas Commun..

[2]  B. Girod,et al.  MINIMIZING DISTORTION FOR MULTIPATH VIDEO STREAMING OVER AD HOC NETWORKS , .

[3]  Yunnan Wu,et al.  Network planning in wireless ad hoc networks: a cross-Layer approach , 2005, IEEE Journal on Selected Areas in Communications.

[4]  Bernd Girod,et al.  CROSSLAYER DESIGN·FOR VIDEO STREAMING OVER WIRELESS AD HOC NETWORKS , 2004 .

[5]  Rene L. Cruz,et al.  Optimal routing, link scheduling and power control in multihop wireless networks , 2003, IEEE INFOCOM 2003. Twenty-second Annual Joint Conference of the IEEE Computer and Communications Societies (IEEE Cat. No.03CH37428).

[6]  Vern Paxson,et al.  TCP Congestion Control , 1999, RFC.

[7]  Baruch Awerbuch,et al.  High Throughput Route Selection in Multi-rate Ad Hoc Wireless Networks , 2004, WONS.

[8]  Bernd Girod,et al.  Analysis of video transmission over lossy channels , 2000, IEEE Journal on Selected Areas in Communications.

[9]  Bernd Girod,et al.  Minimizing distortion for multi-path video streaming over ad hoc networks , 2004, 2004 International Conference on Image Processing, 2004. ICIP '04..

[10]  David A. Maltz,et al.  Dynamic Source Routing in Ad Hoc Wireless Networks , 1994, Mobidata.

[11]  Sally Floyd,et al.  Promoting the use of end-to-end congestion control in the Internet , 1999, TNET.

[12]  Robert Tappan Morris,et al.  Performance of multihop wireless networks: shortest path is not enough , 2003, CCRV.