Automatic Analysis of Primary and Secondary

8/13/2019 Automatic Analysis of Primary and Secondary

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Automatic Analysis of Primary and Secondary

Networks in a Shared IEEE 802.11 System


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Objectives

primary and a secondary (cognitive) network whenboth networks use the IEEE 802.11 based distributedcoordination function for medium access control.

The theoretical expressions are validated using

extensive simulations carried out in the NetworkSimulator

Our results provide RF ethical insights into theperformance and robustness of different schemes formedium access by the secondary network

that simply in RFeasing the secondary contentionwindow size is only marginally inferior to silent-periodbased methods in terms of its throughput performance


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INTRODUCTION

A recent and emerging approach to dramatically improvethe efficiency of spectral usage by a secondary network isthat of Radio frequency (RF)

the RF proposals are targeted towards frequency bands

where the primary signal does not employ any form ofspectrum sensing prior to transmission

This undesirable phenomenon is referred to as channelcapture in the literature.

We also illustrate the generality of the analytical framework

we develop by using it to derive the throughputperformance of other simpler secondary MAC techniquessuch as in RFeasing the contention window length andobserving a mandatory silent period.


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EXISTING SYSTEM:

Manually operated in cell phone tower

The IEEE 802.15.4 protocol offers great potential for

industrial wireless sensor networks, especially when

operating in beacon-enabled mode over star orcluster-tree topologies.

Disadvantages:

Only for tree topologies.

And also physical layer.


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Literature Review 1

A survey of quality of service in IEEE 802.11 networks

Outline:

This article surveys 802.11 QoS schemes, including

service differentiation in the MAC layer, admission control and

bandwidth reservation in MAC, and to meet these challenges

by providing the necessary enhancements for the required

QoS.

Author:

H. Zhu, M. Li, I. Chlamtac, and B. Prabhakaran,


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Limitation

It only analysis the Qos of 802.11 of primary

network.

It gives the survey of MAC layer only, higher

layers are avoided.

Throughput is less compare to the proposed

system.


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Literature Review 2

A Unified Model for the Performance Analysis of

IEEE 802.11e EDCA

Outline:

This paper gives a new unifiedperformance model and analysis

method to study the saturation throughput and delay performance

of EDCA, under the assumption of a finitenumber of stations and

ideal channel conditions in a single-hop WLAN.

Author:

J. He, L. Zheng, Z. Yang, and C. T. Chou


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Limitation

Performance is analyzed only for single hop

but proposed system it is multi hop

It gives only the assumption value of delays

with a numerous No. of stations.

Collision and Retransmissions are not

considered in the performance.


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PROPOSED SYSTEM:

100% POWER SAVING SYSTEM

USER DEFIND FOR SIGNAL SHARING BY

TOWER MANAGEMENT SYSTEM

FOR ALL TOWER WILL BE CONTROL BY LAN

BUS SYSTEM

USER DEFINED SIGNAL TRANSMISSION

FUNCTION


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ADVANTAGE

Power saving mechanism

CAN BUS will be controlled networks

For all tower will controlled system


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APPLICATION

1. EB system

2. Tower system

3. Home application4. All Networking system

Documents

Automatic Analysis of Primary and Secondary