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)
It is pop ....etc

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Abstract
The third generation(3G) wireless network is envisaged as the next generation wireless solution for meeting the demand of its users. It promises to provide wireless access to multimedia applications at rates upto 2Mbps. But the problems of intermittent disconnection, high error rate in wireless networks can cause degradation of protocols and compromise the QoS (Quality-of-Service) guaranteed to the users. So, there is a need for adaptive protocols, which, on determining the current adverse wireless network conditions, adapt th ....etc

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From
Ravichandraprasad

Sir please send the ppt and report of the power paper ....etc

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i need ppt about this topic so it would help for my seminars..plz can any one help me ....etc

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MAC Protocols for Sensor Networks



The characteristics of sensor networks

Tight constraints
Computation power
Storage
Primary functions
Sample the environment for sensory information
Propagate data back to the infrastructure
Traffic pattern
Little activity in lengthy period
Intensive traffic in short time
Highly correlated traffic
End to end flows are required to be fair

An adaptive rate control scheme

The metrics for evaluation of a sensor network MAC p ....etc

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MAC-Layer Anycasting in Ad Hoc Networks



INTRODUCTION
Wireless Ad hoc networks are infrastructureless multi-hop
networks in which nodes behave as mobile routers. Routing
protocols attempt to choose optimal routes based on some optimality
criteria (e.g., number of hops). However, in the process
of selecting an optimal route, the routing protocol is often faced
with the decision to choose between two equally good routes.
Ties are often broken randomly. MAC-layer anycasting ....etc

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Sensor Medium Access Control (S-MAC) FOR WIRLESS NETWORKS

ABSTRACT

S-MAC is a medium-access control (MAC) protocol designed for wireless sensor networks. Wireless sensor networks use battery-operated computing and sensing devices. A network of these devices will collaborate for a common application such as environmental monitoring. We expect sensor networks to be deployed in an ad hoc fashion, with individual nodes remaining largely inactive for long periods of time, but then becoming suddenly active when someth ....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) ....etc

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Abstract The pervasive adoption of IEE 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 IEE 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 IEE 802.11 DCF in the highly mobile vehicular networks. We first propose a simple yet accurate ....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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