TITLE:
Enhancement in QoS for Hybrid Networks Using IEEE 802.11e HCCA with Extended AODV Routing Protocol
AUTHORS:
Shalini Singh, Rajeev Tripathi
KEYWORDS:
MANET, HCCA, Extended AODV, Hybrid Network, Quality of Service
JOURNAL NAME:
International Journal of Communications, Network and System Sciences,
Vol.8 No.6,
June
30,
2015
ABSTRACT: The mobile ad hoc network (MANET) with
infrastructure networks (hybrid networks) has several practical uses. The
utility of hybrid network is increased in real time applications by providing
some suitable quality of service. The quality thresholds are imposed on
parameters like end-to-end delay (EED), jitter, packet delivery ratio (PDR)
and throughput. This paper utilizes the extended ad hoc on-demand distance
vector (AODV) routing protocol for communication between ad hoc network and
fixed wired network. This paper also uses the IEEE 802.11e medium access
control (MAC) function HCF Controlled Channel Access (HCCA) to support quality
of service (QoS) in hybrid network. In this paper two simulation scenarios are
analyzed for hybrid networks. The nodes in wireless ad hoc networks are mobile
in one scenario and static in the other scenario. Both simulation scenarios are
used to compare the performance of extended AODV with HCCA (IEEE 802.11e) and
without HCCA (IEEE802.11) for real time voice over IP (VoIP) traffic. The
extensive set of simulations results show that the performance of extended AODV
with HCCA (IEEE 802.11e) improves QoS in hybrid network and it is unaffected
whether the nodes in wireless ad hoc networks are mobile or static.