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Monitoring-based Coordination of Network-adaptive FEC for Wireless Multi-hop Video Streaming
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 Title & Authors
Monitoring-based Coordination of Network-adaptive FEC for Wireless Multi-hop Video Streaming
Choi, Koh; Yoo, Jae-Yong; Kim, Jong-Won;
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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.
Network-Adaptation;Wireless Multi-hop Video Streaming;Monitoring-based FEC;
 Cited by
IEEE 802.11 네트워크 기반의 비디오 스트리밍 전송 향상을 위한 packet-level FEC 특성 분석,손예진;강승석;

한국정보기술학회논문지, 2012. vol.10. 2, pp.101-109
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