Abstract
We report the implementation experience and experimental evaluation of a staggered adaptive forward error correction (FEC) system for video multicast over wireless LANs. In the system, the parity packets generated by a cross-packet FEC code are transmitted at a time delay from the original video packets, i.e. staggercasting video stream and FEC stream in different multicast groups. The delay provides temporal diversity to improve the robustness of video multicast, especially to enable the clients to correct burst packet loss using FEC and to achieve seamless handoff. A wireless client dynamically joins the FEC multicast groups based upon its channel conditions and handoff events. We have implemented the system including the streaming server and client proxy. A novel software architecture is designed to integrate the FEC functionality in the clients without requirement for changing the existing video player software. We conduct extensive experiments to investigate the impact of FEC overhead and the delay between the video stream and FEC stream to the video quality under different interference levels and mobile handoff durations. The efficacy of staggered adaptive FEC system on improving video multicast quality is demonstrated in real system implementation.
| Original language | English (US) |
|---|---|
| Title of host publication | Proceedings - 9th IEEE International Symposium on Multimedia, ISM 2007 |
| Pages | 283-290 |
| Number of pages | 8 |
| DOIs | |
| State | Published - Dec 1 2007 |
| Event | 9th IEEE International Symposium on Multimedia, ISM 2007 - Taichung, Taiwan, Province of China Duration: Dec 10 2007 → Dec 12 2007 |
Publication series
| Name | Proceedings - 9th IEEE International Symposium on Multimedia, ISM 2007 |
|---|
Other
| Other | 9th IEEE International Symposium on Multimedia, ISM 2007 |
|---|---|
| Country | Taiwan, Province of China |
| City | Taichung |
| Period | 12/10/07 → 12/12/07 |
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All Science Journal Classification (ASJC) codes
- Computer Science(all)
- Computer Graphics and Computer-Aided Design
Cite this
}
A staggered FEC system for seamless handoff in wireless LANs : Implementation experience and experimental study. / Liu, Hang; Wu, Mingquan; Li, Dekai; Mathur, Saurabh; Ramaswamy, Kumar; Han, Liqiao; Raychaudhuri, Dipankar.
Proceedings - 9th IEEE International Symposium on Multimedia, ISM 2007. 2007. p. 283-290 4412384 (Proceedings - 9th IEEE International Symposium on Multimedia, ISM 2007).Research output: Chapter in Book/Report/Conference proceeding › Conference contribution
TY - GEN
T1 - A staggered FEC system for seamless handoff in wireless LANs
T2 - Implementation experience and experimental study
AU - Liu, Hang
AU - Wu, Mingquan
AU - Li, Dekai
AU - Mathur, Saurabh
AU - Ramaswamy, Kumar
AU - Han, Liqiao
AU - Raychaudhuri, Dipankar
PY - 2007/12/1
Y1 - 2007/12/1
N2 - We report the implementation experience and experimental evaluation of a staggered adaptive forward error correction (FEC) system for video multicast over wireless LANs. In the system, the parity packets generated by a cross-packet FEC code are transmitted at a time delay from the original video packets, i.e. staggercasting video stream and FEC stream in different multicast groups. The delay provides temporal diversity to improve the robustness of video multicast, especially to enable the clients to correct burst packet loss using FEC and to achieve seamless handoff. A wireless client dynamically joins the FEC multicast groups based upon its channel conditions and handoff events. We have implemented the system including the streaming server and client proxy. A novel software architecture is designed to integrate the FEC functionality in the clients without requirement for changing the existing video player software. We conduct extensive experiments to investigate the impact of FEC overhead and the delay between the video stream and FEC stream to the video quality under different interference levels and mobile handoff durations. The efficacy of staggered adaptive FEC system on improving video multicast quality is demonstrated in real system implementation.
AB - We report the implementation experience and experimental evaluation of a staggered adaptive forward error correction (FEC) system for video multicast over wireless LANs. In the system, the parity packets generated by a cross-packet FEC code are transmitted at a time delay from the original video packets, i.e. staggercasting video stream and FEC stream in different multicast groups. The delay provides temporal diversity to improve the robustness of video multicast, especially to enable the clients to correct burst packet loss using FEC and to achieve seamless handoff. A wireless client dynamically joins the FEC multicast groups based upon its channel conditions and handoff events. We have implemented the system including the streaming server and client proxy. A novel software architecture is designed to integrate the FEC functionality in the clients without requirement for changing the existing video player software. We conduct extensive experiments to investigate the impact of FEC overhead and the delay between the video stream and FEC stream to the video quality under different interference levels and mobile handoff durations. The efficacy of staggered adaptive FEC system on improving video multicast quality is demonstrated in real system implementation.
UR - http://www.scopus.com/inward/record.url?scp=48649091317&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=48649091317&partnerID=8YFLogxK
U2 - 10.1109/ISM.2007.29
DO - 10.1109/ISM.2007.29
M3 - Conference contribution
AN - SCOPUS:48649091317
SN - 0769530583
SN - 9780769530581
T3 - Proceedings - 9th IEEE International Symposium on Multimedia, ISM 2007
SP - 283
EP - 290
BT - Proceedings - 9th IEEE International Symposium on Multimedia, ISM 2007
ER -