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A Cross-layer Link Adaptive HD Video Transmission Scheme in WiMedia D-MAC based UWB Systems
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  • A Cross-layer Link Adaptive HD Video Transmission Scheme in WiMedia D-MAC based UWB Systems
  • A Cross-layer Link Adaptive HD Video Transmission Scheme in WiMedia D-MAC based UWB Systems
저자명
Joo. Yang-Ick
간행물명
멀티미디어학회논문지
권/호정보
2012년|15권 12호|pp.1464-1474 (11 pages)
발행정보
한국멀티미디어학회
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정기간행물|ENG|
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이 논문은 한국과학기술정보연구원과 논문 연계를 통해 무료로 제공되는 원문입니다.
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기타언어초록

In this paper, we propose a QoS (Quality of Service)-aware and cooperative resource reservation scheme using cross-layer link adaptation for wireless high definition video transmission through UWB (Ultra Wide Band) network with D-MAC (Distributed Medium Access Control). A wireless high definition video transmission system usually requires stable high throughput even without line-of-sight, e.g., a destination device in another room separated by a wall. Since the WiMedia D-MAC supporting DRP (Distributed Reservation Protocol) scheme causes lots of DRP resource reservation conflicts due to failure of beacon detection in wireless channel environment, overall performances of the WiMedia D-MAC can be deteriorated. And the current WiMedia MAC standard has not considered QoS provisioning even though QoS parameters such as a range of service rates are provided to each traffic stream. Therefore, we propose Relay DRP protocol with QoS-based relay node selection criterion, which makes a relay path to avoid DRP resource reservation conflicts and guarantee QoS more stably through cross-layer link adaptation of cooperative relay transmission scheme and is compliant with the current WiMedia D-MAC protocol. Simulation results demonstrate performance improvements of the proposed method for throughput and QoS provisioning.