Title :
A performance modeling of WiMedia UWB MAC
Author :
Ma, Chunxiao ; Mehmet-Ali, M.
Author_Institution :
Dept. of Electr. & Comput. Eng., Concordia Univ., Montreal, QC, Canada
Abstract :
The WiMedia Ultra-Wide Band (UWB) specifications include physical layer and distributed Medium Access Control (MAC) layer. Physical layer offers a range of coded data rates from 53.3 Mb/s to 480 Mb/s. WiMedia MAC consists of Beacon period (BP), Distributed Reservation Protocol (DRP) and Prioritized Contention Access (PCA). DRP allows access to the medium through reservation, while PCA provides access to the bandwidth not utilized by DRP through contention. In this paper, we present an integrated performance analysis of the DRP and PCA schemes which includes the multi-rate transmission at the physical layer. We assume DRP traffic with several classes and PCA traffic with multi-priority levels. We determine the call blocking probabilities for DRP classes of traffic, throughput and mean packet delay for PCA traffic and bandwidth utilization of the system. The numerical results show that under heavy traffic throughput of low priority traffic drops and its delay increases sharply.
Keywords :
access protocols; multimedia communication; probability; telecommunication traffic; ultra wideband communication; Beacon period; DRP traffic; WiMedia UWB MAC; and PCA traffic; bandwidth utilization; bit rate 53.3 Mbit/s to 480 Mbit/s; call blocking probabilities; distributed medium access control layer; distributed reservation protocol; multirate transmission; performance analysis; performance modeling; physical layer; prioritized contention access; ultra-wide band specifications; Broadcasting; Communication standards; Communication system traffic control; Computational complexity; Computer science; Protocols; Road accidents; Road vehicles; Scalability; Transportation;
Conference_Titel :
Communications (QBSC), 2010 25th Biennial Symposium on
Conference_Location :
Kingston, ON
Print_ISBN :
978-1-4244-5709-0
DOI :
10.1109/BSC.2010.5473023