EC2050 MOBILE ADHOC NETWORKS NOTES PDF

Anna University, Chennai Department of Electronics and Communication Engineering Eighth Semester EC Mobile Adhoc Networks. ADHOC NETWORKS PPT – Free download as Powerpoint Presentation .ppt /. pptx), PDF File .pdf), Text File Introduction ` History ` Mobile Ad-hoc Networks ` Infrastructure based Networks and Infrastructureless Networks. . Adhoc Question Bank EC VTU 8TH SEM CSE ADHOC NETWORKS NOTES 10CS EC / EC Mobile Adhoc Networks May / June Question Paper ECE 8th Semester Regulation | BE Electronics and Communication.

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Ad-hoc network versus Mobile Ad-hoc network: Datagram Networks Control of Networks: Difficulties in replacing batteries 5. Shadowing Reflection When the propagating radio wave hits an Fading caused by the large buildings object which is very large compared to its or other structures, that block the wavelength such as the surface of Earth, or direct transmission path from the tall buildingsthe wave gets reflected by transmitter to the receiver is known as that object.

List the features of wireless LAN. It may or may not include the effects of antenna gain. Single pass and graph Therotic. Proactive Reactive 1 Route is pre-established Route establishment is on-demand Route discovery by some global 2 Continuously discover the routes search Updates topology information table 3 No information update is done periodically longer delay due to latency of route 4 No latency in route discovery discovery Large capacity is needed to update 5 Large capacity is not needed network information A lot of routing information may May not be appropriate for real-time 6 never be used communication 7 Eg: Sensor nodes consist of sensing, data processing, and communication components and typically form ad hoc networks.

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Anna University ECE 8th Semester Notes – Site Title

The major goals when selecting a routing protocol are a Provide the maximum possible reliability by selecting alternative routes if a node connectivity fails.

RTMAC has no time synchronization since nodes operate in the asynchronous mode. Ericession multiple break point model iii.

A link is classified as stable or unstable based on its temporal stability. Reservation acknowledge phase 5.

EC Mobile Adhoc Networks April May Question Paper

Due to a lack of infrastructure support, each node acts as a router, forwarding data packets for other nodes. What is protocol optimizer?

What are the two types of protocols used to handle multiple access issues?

The QOS metrics that are used to evaluate the performance of the network are 1. List the major goals when selecting a routing protocol. In Adhoc networks, the routers are power constrained just as the nodes. In ad hoc wireless networks, nodes act both as regular terminals source or destination and also as routers for other nodes. There is limitation in availability of power for operation. The standard covers only MAC and the physical layers.

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List the applications of noges hoc networks. A “mobile ad hoc network” MANET is an autonomous system of mobile routers and associated hosts connected by wireless links –the union of which form an arbitrary graph.

What is the approach used to find link stability in ABR? List the classification of routing protocols based on the routing information update mechanism. What is the typical value of time out period in traditional TCP? AMRIS may not exhibit high packet delivery ratio even when all nodes restrict their mobility to a small region.

Anna University ECE 8th Semester Notes

Name some of the outdoor propagation models. Fixed Size Packets and Small Packet size.

The routers are free to move randomly and organize themselves arbitrarily; thus, the network’s wireless topology may change rapidly and unpredictably. Increase of mobile applications, Changes to the network topology, Need of extreme network flexibility.

Protocols with directional antennas The presence of dynamic and adaptive routing protocols enables quick formation of ad hoc networks and is suitable for emergency situations like natural disasters, spontaneous meetings or military conflicts.