Saeed, Rashid Abdelhaleem and Abakar, Ahmat and Naemat, Amran and Aris, Azrin
(2010)
Lightweight TDMA Protocol for wireless vehicular communications.
In: IIUM Research, Innovation & Invention Exhibition (IRIIE 2010), 26 - 27 January 2010, Kuala Lumpur.
Abstract
Wireless vehicular communications (WVC) has been identified as a key technology for intelligent
transportation systems (ITS) for a few years ago. IEEE 802.11p (WAVE: wireless access in vehicular
environments) is the proposed standard for physical and MAC layer of WVC devices. The standard is
extended from 802.11 protocols. The main objectives of the standard are to change the frame format and
increase delay spread tolerance introduced by vehicle mobility, in which the channel bandwidth is scaled
from 20 MHz in 802.11a to 10 MHz in 802.11p. However, to ensure interoperability between vehicles
communicate in rapidly changing environment where a packet transmission should be completed in short
time-frame is a problematic issue. This poster proposes WiFi-based TDMA technique with flexible time
slots and guard bands to tackle this problem. The new TDMA sublayer is compatible with the 802.11p
standard to ensure the feasibility of adoption by any vendor. The simulation results present the
performance analysis and validate the efficiency of the proposed method.
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