IEMEK Journal of Embedded Systems and Applications (대한임베디드공학회논문지)

Institute of Embedded Engineering of Korea (대한임베디드공학회)
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Resource Allocation scheme for WiMedia UWB MAC

WiMedia UWB MAC의 자원할당 방안

  • 남정민 (한국항공대학교 정보통신공학과) ;
  • 백승호 (한국전자통신연구원) ;
  • 허재두 (한국전자통신연구원) ;
  • 이성창 (한국항공대학교 정보통신공학과)
  • Received : 2007.03.04
  • Accepted : 2007.03.12
  • Published : 2007.03.31
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Abstract

Wimedia UWB(Ultra-Wideband) platform provides data rates up to 480Mbps in WPAN (Wireless Personal Area Network). Wimedia conformant devices access to the channels through superframe concept for communications. As the channel resource is limited, the optimal channel time required for each device needs to be estimated to share the resource efficiently among the devices. In this paper, we propose a scheme to estimate the required channel time in a super frame to satisfy the QoS of the application on a device. The channel time is estimated from the service rate which is computed from the TSPEC of the application. In the process of the estimation, we take the frame overhead for data transmission as well as the overhead due to the acknowledgement scheme, preamble, and MDSU size into consideration. We also analyze and compare the throughputs for different acknowledgement scheme, preamble, and MDSU size situations. The estimated channel time required for a given service rate is allocated in the unit of MAS(Medium Access Slot).

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