EFFICIENT AND GUARANTEED QUALITY OF SERVICE (QOS) ROUTING ALGORITHM FOR VEHICULAR NETWORKS (VANETS)

The vehicular ad hoc network (VANET) is a technology that provides mobile
vehicles with endless possibilities of applications, including safety messaging
exchange, real-time traffic information sharing and route condition updates etc. This
network is characterized by rapid topology changes due to the high displacement of
vehicles making Quality of Service (QoS) provisioning a challenging task especially
for real-time and multimedia applications. Providing priority to certain traffic types
has been widely used in V ANET for selecting a stable route with QoS constraints.
This brings along another challenging task in V ANET environment. In an effort to
provide QoS in VANET, the IEEE 802.1lp physical layer (regarded as VANET MAC
protocol) experiences a huge amount of packet loss rate as a result of data collisions.
Somehow its performance can be improved by using Time Division Multiple Access
(TDMA) techniques.