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http://dx.doi.org/10.7840/KICS.2011.36A.2.114

Monitoring-based Coordination of Network-adaptive FEC for Wireless Multi-hop Video Streaming  

Choi, Koh (광주과학기술원 정보통신 공학부 네트워크미디어 연구실)
Yoo, Jae-Yong (광주과학기술원 정보통신 공학부 네트워크미디어 연구실)
Kim, Jong-Won (광주과학기술원 정보통신 공학부 네트워크미디어 연구실)
Publication Information
The Journal of Korean Institute of Communications and Information Sciences / v.36, no.2A, 2011 , pp. 114-126 More about this Journal
Abstract
Video streaming over wireless multi-hop networks(WMNs) contains the following challenges from channel fading and variable bandwidth of wireless channel, and it cause degradation of video streaming performance. To overcome the challenges, currently, WMNs can use Forward Error Correction (FEC) mechanism. In WMNs, traditional FEC schemes, E2E-FEC and HbH-FEC, for video streaming are applied, but it has long transmission delay, high computational complexity and inefficient usage of resource. Also, to distinguish network status in streaming path, it has limitation. In this paper, we propose monitoring-based coordination of network-adaptive hop-to-end(H2E) FEC scheme. To enable proposed scheme, we apply a centralized coordinator. The coordinator has observing overall monitoring information and coordinating H2E-FEC mechanism. Main points of H2E-FEC is distinguishing operation range as well as selecting FEC starting node and redundancy from monitored results in coordination. To verify the proposed scheme, we perform extensive experiment over the OMF(Orbit Measurement Framework) and IEEE 802.1la-based multi-hop WMN testbed, and we carry out performance improvement, 17%, from performance comparison by existing FEC scheme.
Keywords
Network-Adaptation; Wireless Multi-hop Video Streaming; Monitoring-based FEC;
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