Abstract:
Mobile Ad-hoc network is an autonomous system
of mobile wireless nodes connected dynamically
without any preexisting infrastructure. Since the
nodes are mobile, the network topology changes
rapidly and unpredictably over time. The QoS
routing has challenging problems due to the
network’s dynamic topology and limited resources.
If only one single constraint condition is considered
when making routing decision, QoS can’t be
guaranteed because the constraint conditions may
change during a session and other factors can also
affect network performance. In this paper, hopcount,
bandwidth, and mobile speed are considered
for routing decision. Accounting for the uncertainty
of route information in ad-hoc networks, fuzzy logic
is adopted. The simulation is based upon Ad-hoc on
demand Distance Vector and considers that data are
always transmitted through the route with the lowest
delay for real-time traffic. The performance of
proposed scheme is evaluated with NS-2 simulator
in-terms of packet delivery ratio, and end-to-end
delay.
