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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IPv6 – Neighbor discovery, auto-configuration, routing. The needs for cross layer design are a To enhance the performance of the layered protocol stacks. Ericession multiple break point model iii.

It determines noyes highest priority of a data packet ready to be sent by competing nodes. Tunneling is a mechanism in which the mobile node a Simply forwards the packets using the adhoc routing protocol to the destination node, if the destination is inside the MANET b Encapsulates packets and sends them to the gateway node if the destination is not inside the MANET c When the gateway node receives packets, it decapsulates them and sends them to the original destination 7.

What is protocol optimizer?


The contention based protocols can be classified into two groups according to the ways collisions are resolved. Name some of the outdoor propagation models. Fixed Size Packets and Small Packet size. Path break handling mechanisms 4. The different types of fading mobil 1. What is hidden terminal problem? It makes use of frequency modulation to generate radio waves in the ISM band.

EC Mobile Adhoc Network April May Important Questions

The characteristics of wireless channel are 1. Mention any four qualities of service metrics that are used to evaluate the performance of the network. Mobile Ad 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.


AMRIS may not exhibit high packet delivery ratio even when all nodes restrict their mobility to a small region. Eliminate all but one of the contenders if more than one sender has the current priority.

What are the challenging issues in ad hoc network maintenance? Long —distance path loss model ii. IP switching and Multiprotocol Label Switching.

Portability, weight, aadhoc of the hand held devices 4. Hidden terminals are nodes that are hidden or not reachable from the sender of a data transmission session, but are reachable to the receiver of the session. The standard covers only MAC and the physical layers.

Anna University ECE 8th Semester Notes

Improved channel reuse 4. The features of What is free space propagation model? Reduced signal interference 2. HRMA SRMA A multichannel MAC protocol which is based on half-duplex, very slow TDMA frame based dynamic reservation 1 frequency-hopping spread spectrum MAC protocol FHSS radios Time slot reservation protocol where each Nodes are allocated different time slots so 2 fixed time slot is assigned a frequency that transmissions are collision free channel Uses a reservation and handshake mechanism to enable a pair of Nodes use a collision-avoidance 3 communicating nodes to reserve a handshake mechanism and a soft frequency hop, thereby guaranteeing reservation mechanism collision-free data transmission Developed with the main objective of supporting integrated services of real-time 4 Supports real time transmission and non-real-time application in ad hoc networks For secure routing, all the nodes along the path must be secure nodes else security is compromised.

Why does an AP in wireless network act as a bridge? Remember me on this computer. State the use of embedded protocol boosters in cross-layer optimization. Reflection causes a phase shift of shadowing. The power management is needed for 1. Enduring end-end resource negotiation 2. The cross-layer feedback can be categorized as follows Upper to lower layers: Efficient utilization of energy 2. List the issues of designing a MAC protocol for ad-hoc networks.


Availability of network — Emergency 7. Secured routing provides a Confidentiality b Integrity c Avalilability d Non-repudiation 8. Some of the commonly used outdoor propagation models are: Ad-hoc networks Basic concepts, routing.

Job Search Job Search. 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.

Nodes do not require global time synchronization: Scheduling of packet loss and rate of transmission 5. List the challenges faced by WLAN industry. Maximum packet loss rate Prepared by A. 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 networkz, 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.

Transmit the mobie of the remaining node. The reasons that lead to the quick power drain of nodes in mobile Ad hoc network are a Using the same route for a longer duration leads to partitioning ec205 the network.

Define security routing Security routing is defined as routing the data packets from the source to the destination in a secured manner. This leads to an increase in the overall throughput of the system. The routing protocols may also be categorized as follows: Standalone fashion or connected adyoc the larger Internet.