CoSA: Adaptive link-aware real-time streaming for mobile devices

Suk Kyu Lee, Jihoon Ryoo, Seungho Yoo, Jongtack Jung, Woonghee Lee, Hwangnam Kim

Research output: Chapter in Book/Report/Conference proceedingConference contribution

3 Citations (Scopus)

Abstract

Programmable wireless devices which can perceive the current radio environment, decide available spectra, and dynamically change the radio access method, and networking protocols have been proposed to improve spectrum usage, interference mitigation, and connectivity. However, these transitions are currently lacking at upper layers. In this paper, we propose an upper layer cognitive system beyond channel sensing effectiveness and spectrum utilization achieved in adjusting PHY and MAC parameter settings. The proposed cognitive video streaming system achieves end-to-end goals at an upper video layer: quality of experience, service continuity, and survivability. Based on the link state of the receiver, the proposed system identifies areas of importance in the image stream, allocates higher bandwidth for the important areas compared to the other areas which is adjusted to use the less bandwidth with CoSA encoder and decoder, and receive the link state feedback from the receiver. To further understand the CoSA's benefit, we implemented two real test-beds for the cognitive video streaming system where the one uses conventional IEEE 802.11 networking technologies and the other employs a software defined radio platform, and performed a performance evaluation study in order to see the effectiveness of the proposed scheme. The results indicate that the proposed system can dynamically change actual data rates according to SINR feedback, which results in at least 180% improvement of transmission time compared to conventional method, while maintaining PSNR range between 30 to 40 dB with eminently reduced data size.

Original languageEnglish
Title of host publication2013 IEEE 9th International Conference on Wireless and Mobile Computing, Networking and Communications, WiMob 2013
Pages681-686
Number of pages6
DOIs
Publication statusPublished - 2013 Dec 1
Event2013 IEEE 9th International Conference on Wireless and Mobile Computing, Networking and Communications, WiMob 2013 - Lyon, France
Duration: 2013 Oct 72013 Oct 9

Publication series

NameInternational Conference on Wireless and Mobile Computing, Networking and Communications
ISSN (Print)2161-9646
ISSN (Electronic)2161-9654

Other

Other2013 IEEE 9th International Conference on Wireless and Mobile Computing, Networking and Communications, WiMob 2013
CountryFrance
CityLyon
Period13/10/713/10/9

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Keywords

  • Cognitive Radio
  • Experimental evaluation
  • Link-aware image compression
  • System design

ASJC Scopus subject areas

  • Computer Networks and Communications
  • Hardware and Architecture
  • Software

Cite this

Lee, S. K., Ryoo, J., Yoo, S., Jung, J., Lee, W., & Kim, H. (2013). CoSA: Adaptive link-aware real-time streaming for mobile devices. In 2013 IEEE 9th International Conference on Wireless and Mobile Computing, Networking and Communications, WiMob 2013 (pp. 681-686). [6673430] (International Conference on Wireless and Mobile Computing, Networking and Communications). https://doi.org/10.1109/WiMOB.2013.6673430