Presented by:
Amit Agrawal


Wireless LAN Simulation- IEEE 802.11 MAC Protocol
Project Goals
• MATLAB simulation
- DCF (Distributed Coordination Function)
- No Propagation Delay
• Performance Analysis
- Number of Nodes
- Range
- Packet Size
- RTS/CTS
DCF
• DCF
- CSMA/CA is a DCF
• Salient features
- Medium sharing through CSMA/CA
- Allows one to use the medium
- Random Back off interval before retransmission
- Refinement – RTS/CTS packets
[b ....etc

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Abstract—The pervasive adoption of IEEE 802.11 radios in the past decade has made possible for the easy Internet access from a vehicle, notably drive-thru Internet. Originally designed for the static indoor applications, the throughput performance of IEEE 802.11 in the outdoor vehicular environment is, however, still unclear especially when a large number of fast-moving users transmitting simultaneously. In this paper, we investigate the performance of IEEE 802.11 DCF in the highly mobile vehicular networks. We first propose a simple yet accu ....etc

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Z-MAC: A Hybrid MAC for Wireless Sensor Networks

Presented By:-
Subodh Kumar Gond
Roll. No. 08EC6415
M.Tech. 1st Year
Telecommunication System Engineering


Introduction

What is MAC
-Controlling access to the channel
What is Z-MAC

- A Hybrid MAC which Combine the strengths of CSMA and TDMA while offsetting their weakness.

- The main feature of Z-MAC is its adaptability to the level of contention in the network .

CSMA (Carrier Sense Multiple Access)
¢ ....etc

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Presented By:
Reena Kumari
M.Tech (ETC)
Roll No: 851015
3rd semester,2009

Introduction
Goal:
To design a efficient MAC protocol for underwater acoustic sensor network suitable for multi-hop network

Different emphasis from mid-semester surveys:
Challenges and opportunities of Physical channel of underwater communication(already discussed)
Studied different MAC protocol as introduced by different authors→ (already discussed)
Comparison between MAC’s and their challenges (already discussed)

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ABSTRACT
We propose a CDMA-based power controlled medium accessprotocol for mobile ad hoc networks (MANETs). Unlikepreviously proposed protocols, ours accounts for the multipleaccess interference (MAI), thereby addressing the notoriousnear-far problem that undermines the throughputperformance in MANETs. Channel-gain information obtainedfrom overheard RTS and CTS packets over an outof-band control channel is used to dynamically bound thetransmission power of mobile terminals in the vicinity ofa receiver. By properly estimating the requi ....etc

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Presented By:
K.Rajesh kumr1 and Dr.S.Radhakrishnan2
Department of Computer Science and Engineering, Kalasalingam University, Krishnankoil.
kumar85raj

Abstract:
To secure a mobile ad hoc network (MANET) inadversarial environments, a particularly challenging problem is how to feasibly detect and defend possible attacks on routing protocols, particularly internal attacks, such as a Byzantine attack. In this paper, we propose a novel algorithm that detects internal attacks by using both message and route r ....etc

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sir...
please send me the MATLAB code for energy consumption in S-MAC and Token BAsed MAC Protocol. on my mail id ([email protected])


Anjali Varshney ....etc

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sir
i am the student of M.tech.and i am working on wireless sensor network MAC protocols.
please send me the MATLAB coding for average packet latency in T-MAC and S-MAC protocols.on my mail id...([email protected]).

Anjali Varshney ....etc

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Wireless MAC Protocol Using Implicit Pipelining (Java)
IEEE Transactions on Mobile Computing, Vol. 5, No. 3,


Abstract: In distributed multiple access control protocols, two categories of overhead are usually associated with contention resolution. One is channel idle overhead, where all contending stations are waiting to transmit. Another is collision overhead, which occurs when multiple contending stations attempt to transmit simultaneously. Either idle overhead or collision overhead being large, contention resolution algorithm wo ....etc

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EE-MAC PROTOCOL FOR WSN
By,
Aswathi R Nair
S7 Applied Electronics and Instrumentation
College Of Engineering, Trivandrum
2007-11 batch




overview
WSN

KEY PERFORMANCE METRICS

IEEE 802.11 DCF MAC PROTOCOL

CC-MAC PROTOCOL

ADVANTAGES OF THE ENHANCED VERSION

WHAT IS A WSN?
WHERE IS IT USED?
WITHIN A SENSOR NODE
Sensor nodes - low power devices equipped with one or more sensors, a processor, memory, a power supply, a radio, and an actuator.

HOW IT WORKS
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