hakkem project abstract

8/13/2019 Hakkem Project Abstract

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THROUGHPUT IMPROVEMENT OF TCP SESSIONS

IN CDMA NETWORS

PHASE I

PROJECT REPORT

Submitted by

HAKKEM.B

(08101760500!

In Partial fulfillment for the award of the degree

Of

MASTER OF ENGINEERING

"#

EMBEDDED S$STEM TECHNO%OGIES

K.S.R. CO%%EGE OF ENGINEERING

TIRUCHENGODE&15

ANNA UNIVERSIT$' COIMBATORE

NOVEMBER 00)

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K.S.R. CO%%EGE OF ENGINEERING* TIRUCHENGODE&15

DEPARTMENT OF E%ECTRONICS AND COMMUNICATION ENGINEERING

BONAFIDE CERTIFICATE

Certified that this report titled+THROUGHPUT IMPROVEMENT OF TCP

SESSIONS IN CDMA NETWORS, for the phase I of the project, is a bonafide work of

M-.HAKKEM.B (08101760500! who carried out this report work under my

supervision, for the partial fulfillment of the requirements for the award of the degree of

MASTER OF ENGINEERING IN EMBEE S!STEM TE"#NO$OGIES

certified further that the best of my knowledge and belief, the work reported herein does

not form part of thesis or dissertation on the basic of which a degree award was conferred

on a earlier occasions.

SIGNATURE SIGNATURE

SUPERVISOR HEAD OF THE EPARTMENT

.!."#$!%%&'#$,$.(,)!h.*+ !rof.!.".!(&I#"#$,$.(,)!h.*+

#ssociate !rofessor - (C( *epartment .".&.College of (ngineering

.".&.College of (ngineering

INTERNA% EAMINER

!.".!(&I#"#$.,$.(,)!h.*+

!rofessor and ead

*epartment of (C(

.".&.College of (ngineering

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ACKNOW%EDGEMENT

I thank the almighty /ord of our life for his guidance and support at everyphase of our project work.

I prostrate before the #lmighty who guided us in taking in this project work

and gave us confidence and the ability to complete it successfully.

I e0press our profound gratitude to, %"/#.D-.K.S.R#234* $12

Chairman, .".& Institutions and our managing trustee M-. R. S-"#"2#*33$

for their valuable guidance through the course.

I e0press our heart felt thanks to our !rincipal D-.N.R#-#* !h.*.,

and our *ean D-.A.K-"2##*3."c., 3.(., !h.*., 2I(, "$I(((, $I"4(, $C"I

and our 5ice6!rincipal D-.K.K9"###*3.(., $"., $3#., $.!hill., !h.*., for

their timely advice.

I e0press our deep acknowledgement to M-.P.S.P-"234* $.(., )!h.*+,!rofessor - ead, *epartment of (lectronics and Communication (ngineering,

for giving us this opportunity and his efficient advice throughout the completion of

first phase project.

I e0press our heart felt thanks to M-2.K.P.S3://-#3* $.(., )!h.*+.,#ssociate !rofessor, *epartment of (lectronics and Communication (ngineering,

for her efficient guidelines throughout the completion of first phase project.

I e0press heartly thanks to our 2aculty advisor M-.A.V99"#"-"* $.(.,/ecturer, *epartment of (lectronics and Communication (ngineering, for him

efficient ideas for our course completion.I place on record our gratitude to our parents for their constant

encouragement and support to complete the work successfully. 4he project has

made us to reali7e our potential, an outcome of the togetherness of the family of

which our self as a part.

2inally, we thank all our faculties, friends and all of them who gave us the

source of strength and inspiration in completion of this project work.

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DEDICATED

TO OUR

BE%OVED PARENTS

RESPECTFU% FACU%TIES

;

%OVAB%E FRIENDS

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ABSTRACT

4his project e0plores the use of rate adaptation in cellular networks to ma0imi7e

throughput of long8lived 4C! sessions. $odern cellular networks incorporate &2

technology that allows them to dynamically vary the wireless channel rate in response to

user demands and channel conditions. owever, the set of data rates as well as the

scheduler9s rate adaptation policy are typically chosen to ma0imi7e the throughput of

inelastic connections. :e focus on the problem of ma0imi7ing the throughput of 4C!

connections and propose a joint optimi7ation of $#C and physical layer parameters with

respect to 4C! sending rate. In particular, we propose a simple 4C!8aware channel

scheduler that adapts the wireless channel rate to changes in the 4C! sending rate and

e0plore its performance for both single and multiple concurrent sessions. In the case of a

single 4C! session, we develop a fluid model of its steady8state behavior in such a

system that adapts between two channel rates.

4he accuracy of the model, its utility in selecting optimal rates as well as theperformance of systems with up to three channel rates are e0plored with ns8; simulations.

%ur results indicate that a two8rate scheme improves 4C! throughput by percent

over a system that does not e0ploit rate adaptation and that little additional benefit accrues

from the addition of a third channel rate. 2inally, we e0tend the framework to scenarios

where bandwidth is shared by multiple 4C! sessions. :e propose two channel allocation

algorithms, one relying on detailed 4C! state information, the other not, and e0plore

their performance through simulation. %ur results indicate that 4C! throughput is

relatively insensitive to either channel allocation algorithm, and adaptive rate variation is

the dominant factor in performance.

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TAB%E OF CONTENTS

vi

C.

N/ CONTENTS

PAGE

N/.

ABSTRACT

%IST OF FIGURES ""

%IST OF TAB%ES """

1. INTRODUCTION 1

. %ITERATURE REVIEW 5

;.< ""4($ $%*(/ 5

;.; 4C!8#:#&( &("%?&C( #//%C#4I%' 7;.;.< "ingle8?ser "cheduler 7

;.;.; $ultiuser "cheduler 8

;.;.;.< @ 8(mpt "cheduler )

;.;.;.; A 8#ware "cheduler )

;.B "I'/( 4C! "(""I%' #'#/"I" 11

;.B.< 4C! $odel 11

;.D '?$(&IC#/ &("?/4" 1

hakkem project abstract

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