A Multi-layer Approach to Support Multimedia Communication in Mesh Networks with QoS

It is challenging to support multimedia transmissions over wireless networks, especially, wireless mesh networks, due to some natural resource constraints of wireless networks. In this paper, we investigate in detail some possible improvements on a number of layers to enable the multimedia transmission over wireless networks with QoS support. We implement all our protocols in some test-beds to study their real time performances. We first study a number of improvements of some existing routing protocols to support multimedia transmissions. Some new admission control and rate control mechanisms are studied and their performance gains are verified in our experiments. In our new cross-layer adaptive rate control (CLARC) mechanism, we adaptively change the video encoder’s output bit rate based on the available network bandwidth to improve the quality of the received video. We design and implement a campus test-bed for supporting multimedia traffics in mobile wireless mesh networks. We also design a mobile gateway protocol to connect the MANET to Internet and a wireless LAN management protocol to automatically manage WLAN to provide some QoS.

[1]  Robert Tappan Morris,et al.  Opportunistic routing in multi-hop wireless networks , 2004, Comput. Commun. Rev..

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

[3]  Mihaela van der Schaar,et al.  Adaptive cross-layer protection strategies for robust scalable video transmission over 802.11 WLANs , 2003, IEEE J. Sel. Areas Commun..

[4]  Stephen P. Boyd,et al.  Simultaneous routing and resource allocation via dual decomposition , 2004, IEEE Transactions on Communications.

[5]  Songwu Lu,et al.  A transport protocol for supporting multimedia streaming in mobile ad hoc networks , 2003, IEEE J. Sel. Areas Commun..

[6]  Bernd Girod,et al.  Congestion-optimized scheduling of video over wireless ad hoc networks , 2005, 2005 IEEE International Symposium on Circuits and Systems.

[7]  Hamid Gharavi,et al.  Dynamic adjustment packet control for video communications over ad-hoc networks , 2004, 2004 IEEE International Conference on Communications (IEEE Cat. No.04CH37577).

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

[9]  Rama Chellappa,et al.  Adaptive source-channel subband video coding for wireless channels , 1997, Proceedings of First Signal Processing Society Workshop on Multimedia Signal Processing.

[10]  Lei Wang,et al.  Multipath source routing in wireless ad hoc networks , 2000, 2000 Canadian Conference on Electrical and Computer Engineering. Conference Proceedings. Navigating to a New Era (Cat. No.00TH8492).

[11]  Shivendra S. Panwar,et al.  Video transport over ad-hoc networks using multiple paths , 2002, 2002 IEEE International Symposium on Circuits and Systems. Proceedings (Cat. No.02CH37353).

[12]  Charles E. Perkins,et al.  Ad-hoc on-demand distance vector routing , 1999, Proceedings WMCSA'99. Second IEEE Workshop on Mobile Computing Systems and Applications.

[13]  Robert Tappan Morris,et al.  ExOR: opportunistic multi-hop routing for wireless networks , 2005, SIGCOMM '05.

[14]  Dong-Ho Cho,et al.  A novel adaptive routing scheme for the QoS-based multimedia services in mobile ad-hoc networks , 1999, Gateway to 21st Century Communications Village. VTC 1999-Fall. IEEE VTS 50th Vehicular Technology Conference (Cat. No.99CH36324).

[15]  K Ban,et al.  Rate adaptive video transmission over ad-hoc networks , 2004 .

[16]  Andrea J. Goldsmith,et al.  Cross-layer design of ad hoc networks for real-time video streaming , 2005, IEEE Wireless Communications.

[17]  Eric Hsiao-Kuang Wu,et al.  Dynamic QoS Allocation for Multimedia Ad Hoc Wireless Networks , 2001, Mob. Networks Appl..

[18]  Robert Tappan Morris,et al.  Architecture and evaluation of an unplanned 802.11b mesh network , 2005, MobiCom '05.