Wireless Communication

G. Ben Seraphin ¹, S. Ramesh ¹

Affiliations
1 Department of Electronics and Communication Engineering, Mailam Engineering College, Villupuram-604304, IN

Abstract

The integration of WiMAX and WLAN has been seenan important goal towards the enhancement of fourth generation(4G). Vertical handoff plays important role while integration ofWiMAX and WLAN heterogeneous overlay systems. Verticalhandoff is preformed on the basis of Quality of Service (QoS) metricsof the two heterogeneous networks. We addresses a tightly coupledarchitecture executed with seamless handoff By using the ad-hoc ondemand multipath distance vector protocol and channel aware adhocon demand multipath distance vector a simple evaluation algorithmis used to measure the QoS metrics such as available bandwidth andpacket delay of both mobile and fixed users respectively. Wheneverthe criteria is not satisfied the vertical handoff occurs. The proposedscheme can keep the users always being best connected to networkavailable (WiMAX OR WLAN).

Keywords

QoS, Seamless Vertical Handover, AOMDV.

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S. Ramesh ¹, R. Indira ², R. Praveen ², P. Ganesh Kumar ³

Affiliations
1 Regional Centre of Anna University, Madurai, IN
2 Department of Computer Science and Engineering, Regional Centre of Anna University, Madurai, IN
3 K.L.N. College of Engineering, Sivagangai, IN

Abstract

Intermittently Connected Mobile Ad hoc Network (ICMANET) is a partially connected Mobile Ad hoc Network (MANET) and is a form of Delay Tolerant Network, where there never exists a complete end – to – end path between two nodes wishing to communicate. The intermittent connectivity araise when a network is sparse or highly mobile. Routing in MANET is achieved through many available traditional routing protocols like Ad hoc On demand Distance Vector (AODV), Optimized Link State Routing (OLSR), Zone Routing Protocol (ZP) etc. These protocols require a connected topology for successful data transmission. Due to the absence of constant connectivity, the traditional protocols are not suitable for routing. Routing in such a spasmodic environ is arduous too. Recent researchers have proposed many routing techniques for ICMNAET. It is evident that even though routing is possible in ICMANET, secure routing in such networks still remains an unanswerable issue. As a means of providing security in ICMANET, in this paper we proposed a secure routing technique. The secure routing is achieved by setting of agent at each node in the available Epidemic Routing Protocol. Setting agent at each node ensures a greater probability of security.

Keywords

MANET, ICMANET, Delay Tolerant Networks, Epidemic Routing, Agents.

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