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CLC number: TN919.8

On-line Access: 2024-08-27

Received: 2023-10-17

Revision Accepted: 2024-05-08

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Journal of Zhejiang University SCIENCE A 2006 Vol.7 No.5 P.885-893

http://doi.org/10.1631/jzus.2006.A0885


Network-adaptive HD MPEG-2 video streaming with cross-layered channel monitoring in WLAN


Author(s):  Park Sanghoon, Yoon Hayoung, Kim Jongwon

Affiliation(s):  Networked Media Laboratory, Department of Information and Communications, GwangJu Institute of Science and Technology, Gwangju 500-712, Korea

Corresponding email(s):   jongwon@netmedia.gist.ac.kr

Key Words:  Wireless video, Adaptive video streaming, Cross-layered design, Prioritized packetization, MPEG-2


Park Sanghoon, Yoon Hayoung, Kim Jongwon. Network-adaptive HD MPEG-2 video streaming with cross-layered channel monitoring in WLAN[J]. Journal of Zhejiang University Science A, 2006, 7(5): 885-893.

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Abstract: 
In this paper, we propose a practical design and implementation of network-adaptive high definition (HD) MPEG-2 video streaming combined with cross-layered channel monitoring (CLM) over the IEEE 802.11a wireless local area network (WLAN). For wireless channel monitoring, we adopt a cross-layered approach, where an access point (AP) periodically measures lower layers such as medium access control (MAC) and physical (PHY) transmission information (e.g., MAC layer loss rate) and then sends the monitored information to the streaming server application. The adaptive streaming server with the CLM scheme reacts more quickly and efficiently to the fluctuating wireless channel than the end-to-end application-layer monitoring (E2EM) scheme. The streaming server dynamically performs priority-based frame dropping to adjust the sending rate according to the measured wireless channel condition. For this purpose, the proposed streaming system nicely provides frame-based prioritized packetization by using a real-time stream parsing module. Various evaluation results over an IEEE 802.11a WLAN testbed are provided to verify the intended Quality of Service (QoS) adaptation capability. Experimental results showed that the proposed system can mitigate the quality degradation of video streaming due to the fluctuations of time-varying channel.

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Reference

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[9] Park, S., Lee, S., Kim, J., 2005a. Adaptive High Definition MPEG-2 TS Streaming System Using Frame-based Prioritized Packetization over IEEE 802.11a WLAN. Proceeding of Visual Communication and Image Processing (VCIP’05). Beijing, China, p.1880-1890.

[10] Park, S., Lee, S., Kim, J., 2005b. Network-Adaptive High Definition MPEG2 Streaming over IEEE 802.11a WLAN Using Frame-based Prioritized Packetization. Proceeding of ACM WMASH’05. Cologne, Germany.

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[15] van der Schhar, M., Shankar, S., 2005. Cross-layer wireless multimedia transmission: challenges, principles, and new paradigms. IEEE Wireless Communications Magazine, 12(4):50-58.

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