DocumentCode :
2576812
Title :
A new smooth handoff scheme for mobile multimedia streaming using RTP dummy packets and RTCP explicit handoff notification
Author :
Kashibuchi, Kenichi ; Taleb, Tarik ; Jamalipour, Abbas ; Nemoto, Yoshiaki ; Kato, Nei
Author_Institution :
Graduate Sch. of Inf. Sci., Tohoku Univ., Sendai
Volume :
4
fYear :
2006
fDate :
3-6 April 2006
Firstpage :
2162
Lastpage :
2167
Abstract :
In the near future, RTP/RTCP-based multimedia streaming will become the norm not only in wired networks but also in mobile environments. Presently when a handoff occurs between heterogeneous networks (with different available bandwidths), a RTP sender cannot stream media at a suitable rate over the new network. Furthermore, RTCP fails to precisely adapt to sudden changes in network resources due to handoff. In order to solve these issues, 1) senders should be aware when mobile nodes are about to perform a handoff; 2) senders should then efficiently probe the available bandwidth in the new network and accordingly adjust their streaming rates. In this paper, we propose a scheme that allows mobile nodes to explicitly notify their handoff timing by using newly-defined RTCP packets. In the proposed scheme, senders probe the available bandwidth in the new network using low-priority RTP dummy packets. The performance of the proposed scheme is evaluated and compared with conventional schemes through extensive simulations. The simulation results show that the proposed scheme achieves appropriate bandwidth utilization immediately after a handoff occurrence and lowers packet losses during the handoff. The proposed scheme exhibits also high TCP-friendliness
Keywords :
bandwidth allocation; mobile communication; multimedia communication; transport protocols; RTCP explicit handoff notification; RTP dummy packets; TCP-friendliness; bandwidth utilization; handoff occurrence; mobile multimedia streaming; mobile nodes; real-time transport protocol; smooth handoff scheme; Access protocols; Bandwidth; Communication system traffic control; Multimedia systems; Probes; Streaming media; Timing; Transport protocols; Web and internet services; Wireless LAN;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Wireless Communications and Networking Conference, 2006. WCNC 2006. IEEE
Conference_Location :
Las Vegas, NV
ISSN :
1525-3511
Print_ISBN :
1-4244-0269-7
Electronic_ISBN :
1525-3511
Type :
conf
DOI :
10.1109/WCNC.2006.1696631
Filename :
1696631
Link To Document :
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