Seminar Mobile 005

7/21/2019 Seminar Mobile 005

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MOBILE CLOUD COMPUTING

IS 747 CLOUD COMPUTING

Midterm Project

MOBILE CLOUDCOMPUTING

Fatih zl1777762

InformationSystems

Middle East TechnicalUniversity

04.06.2012

[email protected]

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TABLE OF CONTENTS

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1. INTRODUCTION

1.1. Overview

This document is prepared as a proect !or IS 747 "ecture. The document starts #ith an

introduction to mo$i"e c"oud computin% #ith a de!inition& architecture& and

ad'anta%es(disad'anta%es. )t the ne*t sections& continues #ith the app"ications o! MCC&

detai"ed cha""en%es in mo$i"e en'ironment and so"utions. Last"+ the document conc"udes the

main issues a$out the mo$i"e c"oud computin% #ith the conc"usion part.

1.2. Defnii!n"# A$$revi%i!n" %n& A'r!n()"

CC C"oud computin%

I)S Inte%rated )uthenticated Ser'ice

ISP Internet ser'ice pro'iders

MC Mo$i"e Computin%

MCC Mo$i"e C"oud Computin%

PD) Persona" Di%ita" )ssistant

SO)P Simp"e O$ect )ccess Protoco"

1.*. Inr!&+'i!n ! MCC

Mo$i"e ser'ices ha'e %ained speed $+ the emer%in% c"oud computin% techno"o%ies& as these

de'ices ta,e an important ro"e in the human "i!e as $oth communication and entertainment&

not $ounded $+ time and p"ace. The mo$i"e computin% -MC $ecomes po#er!u" and rapid in

the de'e"opment o! IT techno"o%+ #ithin commerce and industr+ !ie"ds& as #e"". On the other

hand& the mo$i"e de'ices are !acin% up #ith man+ stru%%"es in their resources -e.%.& $atter+

"i!e& stora%e& and $and#idth and communications -e.%.& pri'ac+& mo$i"it+ and securit+ /01.

These cha""en%es a!!ect the impro'ement o! ser'ice 2ua"ities $ad"+.

C"oud computin% -CC started to $e #ide"+ used and $rou%ht man+ opportunities in the

means o! resources "i,e ser'ers& net#or,s& and stora%es& p"at!orms and so!t#are at 'er+ "o#

costs. This ease o! use and "o# cost o! CC can "ead mo$i"e app"ications to $e more

#idespread and pro'ide 'ariet+ o! ser'ices in the mo$i"e en'ironment. The mo$i"e

app"ications can $e thou%ht a ne# #a+ !rom the c"oud pro'iders3 perspecti'e it can $e

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inte%rated #ith the e*istin% c"oud s+stem #ithout needin% an+ additiona" cost"+

in!rastructure& $ut ne# t+pes o! ser'ices and !aci"ities !or the mo$i"e users.

1.4. Defnii!n !, M!$i-e C-!+& C!)+in/

The Mo$i"e C"oud Computin% -MCC term #as introduced a!ter the concept o! C"oud

Computin%. 5asica""+& MCC re!ers to an in!rastructure #here $oth the data stora%e and the

data processin% happen outside o! the mo$i"e de'ice /61. e%ardin% the de!inition& mo$i"e

app"ications mo'e the computation po#er and stora%e !rom the mo$i"e phones to the c"oud.

It can $e thou%ht as a com$ination o! the c"oud computin% and mo$i"e en'ironment. The

c"oud can $e used !or po#er and stora%e& as mo$i"e de'ices don3t ha'e po#er!u" resources

compared to traditiona" computation de'ices.

Toda+& there are a"read+ "ots o! %ood e*amp"es o! MCC app"ications inc"udin% Gmai"& Goo%"e

Maps& and such app"ications. 8o#e'er& the most o! app"ications sti"" do most o! the

ca"cu"ation and data stora%e on the mo$i"e de'ices themse"'es& not in the c"oud. In a !e#

+ears& that cou"d chan%e .

1.. M!$i-e C-!+& C!)+in/ Ar'ie'+re

The Mo$i"e C"oud Computin% architecture is $asica""+ sho#n in the 9i%ure 0. The main

architecture is composed !rom the components: mo$i"e users& mo$i"e operators& internet

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ser'ice pro'iders -ISP& c"oud ser'ice pro'iders& respecti'e"+ .

Mo$i"e de'ices %enera""+ mo$i"e phones communicate #ith the mo$i"e net#or,s #ith the he"p

o! $ase stations& access points and(or sate""ite. The in!ormation sent !rom the mo$i"e de'ices

are operated on the centra" processors& ser'ers and data$ase on the mo$i"e net#or,

pro'ider side. The main communication is composed !rom $oth sta,eho"ders. Genera""+& the

mo$i"e net#or, pro'ider is "i,e a midd"e#are #ith SO)P or ;ST!u"


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.

Fig. 1 MCC Architecture

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1.6. M!$i-e C-!+& C!)+in/ A&v%n%/e"Di"%&v%n%/e"

There are man+ reasons to use c"oud computin% #ith mo$i"e app"ications. MCC pro'ides

some so"utions to the o$stac"es #hich mo$i"e su$scri$ers are usua""+ !ace up #ith. These

ad'anta%es are:

5attery 4ife8

5atter+ "i!e is one o! the main concerns in the mo$i"e en'ironment. There are a"read+

se'era" so"utions !or e*tendin% $atter+ "i!e $+ enhancin% CPU per!ormance& usin% dis,

and screen in an e!!icient manner to reduce po#er consumption. 5ut these so"utions

%enera""+ re2uire chan%es in the mo$i"e de'ices3 structure or a ne# hard#are #hich

means increasin% the cost. Computation or data o!!"oadin% techni2ues are su%%ested to

mi%rate the hu%e and comp"e* computations !rom "imited resource de'ices "i,e mo$i"e

de'ices to po#er!u" machines "i,e ser'ers in c"ouds. This a'oids ta,in% a "on%

app"ication e*ecution time on mo$i"e de'ices #hich resu"ts in "ar%e amount o! po#er

and(or read=#rite time consumption. There are man+ e'a"uations to sho# e!!ecti'eness

o! these techni2ues.



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ata stora0e ca!acity3rocess !o*er8

)nother o$stac"e is stora%e capacit+ o! mo$i"e de'ices. Mo$i"e de'ices are %enera""+

ha'e "imited stora%e. To o'ercome this pro$"em& MCC can $e used to access& 2uer+ or

store the "ar%e data on the c"oud throu%h #ire"ess net#or,s. There are se'era"

e*amp"es #hich are #ide"+ used such as )ma>on Simp"e Stora%e Ser'ice -)ma>on S?

to pro'ide !i"e stora%e on the c"oud.

In addition& MCC reduces the time and ener%+ consumption !or compute=intensi'e

app"ications& #hich is too app"ica$"e #hen thin,in% o! the "imited=resource de'ices.

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c"oud pro'ider. There!ore there can $e some pro$"ems "i,e poor net#or, speed or

"imited $and#idth. It can $e a $i% concern $ecause the num$er o! mo$i"e and c"oud

users is dramatica""+ increasin%.

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2. APPLICATIONS OF MOBILE CLOUD COMPUTING

Mo$i"e app"ications ha'e $een used #ide"+ and ha'e a hu%e share in a %"o$a" mo$i"e mar,et&

$ecause o! the mi""ions o! su$scri$ers& hundreds o! net#or,s pro'iders and c"oud pro'iders.

There are se'era" mo$i"e app"ications that started to use CC ad'anta%es in this part some

t+pica" e*amp"es are $rie!"+ e*p"ained.

2.1. M!$i-e C!))er'e

Mo$i"e commerce is the a$i"it+ to pro'ide commerce usin% a mo$i"e de'ice& such as a mo$i"e

phone& a Persona" Di%ita" )ssistant -PD)& a smartphone& or other emer%in% mo$i"e

e2uipment such as dashed mo$i"e de'ices. The m=commerce app"ications !u"!i"" man+ tas,s

that re2uire mo$i"it+ !unctions "i,e mo$i"e transactions and pa+ments& mo$i"e messa%in%&

and mo$i"e tic,etin%. Some ser'ices and products are mo$i"e tic,etin%& Mo$i"e 'ouchers&

coupons and "o+a"t+ cards& Location=$ased ser'ices& Mo$i"e $an,in%& Mo$i"e $ro,era%e&

Mo$i"e mar,etin% and ad'ertisin% .

)s the m=commerce ha'e se'era" products and app"ications& there are 'arious cha""en%es

"i,e "o# net#or, $and#idth& hi%h comp"e*it+ o! mo$i"e de'ice con!i%urations& and

securit+(pri'ac+. )s a resu"t& m=commerce app"ications are na'i%ated into c"oud computin%

en'ironment to so"'e these pro$"ems. Some securit+ so"utions are $ased on P@I -pu$"ic ,e+

in!rastructure. This mechanism uses an encr+ption=$ased access to ensure su$scri$ers3

pri'ate and secure access to the c"oud stored data.

2.2. M!$i-e 3e%-'%re

Medica" app"ications in the mo$i"e en'ironment ca""ed as mo$i"e hea"thcare app"ications and

used !or medica" treatment& patient trac,in%& etc. The purpose o! app"+in% MCC in medica"

app"ications is to decrease disad'anta%es o! traditiona" medica" app"ications "i,e sma""

ph+sica" stora%e& securit+ and pri'ac+& and medica" errors.

Mo$i"e hea"thcare pro'ides these !aci"ities:

8ea"th monitorin% ser'ices !or patients to $e monitored at an+time and an+#here

throu%h internet or net#or, pro'ider.

;mer%enc+ mana%ement s+stem !or emer%enc+ 'ehic"es to reach or mana%e 'ehic"es

e!!ecti'e"+ and in time& in case o! recei'in% ca""s !rom incidents and accidents.

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8ea"thcare mo$i"e de'ices !or detectin% pu"se=rate& $"ood pressure& and "e'e" o! a"coho"inte%rated #ith a s+stem to a"ert in case o! emer%enc+.

Store hea"thcare in!ormation o! patients to use in medica" e*periments or researches.

Mo$i"e hea"thcare app"ications pro'ide users easiness and 2uic,ness $+ accessin% resources

at an+ time& !rom an+#here. 5+ the he"p o! c"oud& mo$i"e hea"thcare app"ications o!!er a'ariet+ o! on=demand ser'ices on c"ouds rather than standa"one app"ications on "oca"

computers and ser'ers. 8o#e'er& there ha'e to $e proposed so"utions to protectparticipant3s hea"th in!ormation to increase the pri'ac+ o! the users& as ha'e to $e done in

the traditiona" app"ication.

2.*. M!$i-e Le%rnin/

Mo$i"e "earnin% is "earnin% across conte*ts and "earnin% #ith mo$i"e de'ices. It3s desi%n is

$ased on e"ectronic "earnin% -e="earnin% and mo$i"it+. Traditiona" m="earnin% app"ications

ha'e "imitations $ecause o! hi%h cost o! de'ices and net#or,& "o# net#or, transmission rate&

and "imited educationa" resources. C"oud=$ased -mo$i"e "earnin% m="earnin% app"ications are

introduced to so"'e these pro$"ems. )s an e*amp"e& #ith the he"p o! po#er!u" processin%

a$i"it+ and c"oud3s "ar%e stora%e capacit+& the app"ications pro'ide "earners #ith much richer

ser'ices in terms o! data -in!ormation si>e& !aster processin% speed& and "on%er $atter+ "i!e.



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2.4. M!$i-e G%)in/

Mo$i"e %ames tend to $e sma"" in scope and o!ten re"+ on a simp"e p"a+ rather than %raphics&$ecause o! the "ac, o! processin% po#er o! the mo$i"e de'ices. Mo$i"e %ame is a potentia"

mar,et %eneratin% re'enues !or ser'ice pro'iders& $ecause %ames can comp"ete"+ o!!"oad

#hich means that hu%e computin% resources "i,e %raphic renderin% can $e operated on the

c"oud& the c"ients can on"+ dea"s #ith the inter!ace o! the %ame on their mo$i"e de'ices. This

paradi%m $rin%s man+ ad'anta%es "i,e ener%+ sa'in%& increasin% %ame p"a+in% speed

$ecause o! c"oud3s processin% po#er.


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C%er * C3ALLENGES IN MOBILE CLOUDCOMPUTING

)s mentioned in the pre'ious section& Mo$i"e C"oud Computin% has man+ $ene!its and %ood

app"ication e*amp"es !or mo$i"e users and ser'ice pro'iders. On the other hand& as

mentioned in some parts& there are a"so some cha""en%es re"ated to c"oud computin% and

mo$i"e net#or,s communication. This section %i'es some e*p"anation a$out these o$stac"es

and so"utions.

*.1. M!$i-e Si&e C%--en/e"

In the mo$i"e net#or, side& main o$stac"es and so"utions are "isted $e"o#:

4o* 5and*idth85and#idth is the one o! important issues in mo$i"e c"oud en'ironment $ecause mo$i"e

net#or, resource is much sma""er compared #ith the traditiona" net#or,s. There!ore&

P6P Media Streamin% !or sharin% "imited $and#idth amon% the users #ho are "ocated

near$+ in the same area !or the same content such as the same 'ideo. 5+ this method&

each user transmits or e*chan%es parts o! the same content #ith the other users& #hich

is resu"ted in impro'ement o! content 2ua"it+& especia""+ !or 'ideos.

$vaila,ility8Net#or, !ai"ures& out o! si%na" errors& or hi%h tra!!ic re"ated poor per!ormance pro$"ems

are main threats to pre'ent users to connect to the c"oud. 5ut there are some so"utions

to he"p mo$i"e users in the case o! an+ disconnection !rom the c"ouds. One o! them is


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There are t+pes o! net#or,s #hich are used simu"taneous"+ in mo$i"e en'ironment such

as


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*.2. C!)+in/ Si&e C%--en/e"

In the c"oud side& main o$stac"es and so"utions are "isted $e"o#:

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costs !or these methods. Then& this approach compares the "oca" e*ecution costs o! each

method #ith the remote -c"oud e*ecution costs to ma,e an optima" e*ecution decision.

Sec.rity8

Trust is the main issue o! the su$scri$ers in the mo$i"e p"at!orm.


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Fig. 2 The TrustCube architecture, one implementation of the

authentication framework

#e$ ser'er sends re2uest to Inte%rated )uthenticated Ser'ice -I)S #ith the detai"s o!

re2uest. on

S?& e'er+ input=output operations e*ecutes o$s %enera""+& in !i"e "e'e" #hich increases

the cost o! data communication and processin% !or mo$i"e c"ients. There are some

so"utions that pro'idin% an e!!icient and "ess cost"+ #a+ o! $"oc, "e'e" $ased I(O

a"%orithms instead o! !i"e "e'e". In this so"ution& not a"" the !i"e transmitted& instead data



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$"oc,s are transmitted& in case o! necessit+& #hich is 'er+ use!u" $+ the means o! time

and net#or, communication cost.

In addition& to increase data access e!!icienc+& mo$i"e de'ices can use "oca" stora%e as cache

!or speci!ic parts o! c"oud ser'ice to increase access speed and reduce net#or, necessit+.

8ere& there is a"so a pro$"em& as #e cannot store "ar%e data on the mo$i"e de'ice stora%e

cache& so some data mana%ement or data se"ections mechanisms ha'e to $e app"ied to

determine #hich parts or amount o! data can $e cached or used !rom c"oud.

C%er 4 CONCLUSION

The mo$i"e #or"d is e'o"'in% throu%h si%ni!icant transition !rom 'oice app"ications to data

app"ications. In the US& more than ?EF o! the re'enues come !rom data ser'ices and the



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data re'enues #i"" remain !or o'er EBF o! the re'enues $+ the start o! 6B0? .

In such a data centric #or"d& the ro"e o! c"oud computin% $ecomes more important !or

content sharin% and accessin% data. Mo$i"e users #ant to the same !unctiona"ities !rom a""

their de'ices& in #hich c"oud computin% emer%es !rom comp"ementar+ aspect& as mo$i"e

de'ices ha'e the "imitations o! screen si>e& the 'aria$i"it+ o! de'ices& and the net#or,

"atenc+. There!ore& the c"oud computin% pro'ides optima" ser'ices and !aci"ities !or mo$i"e

de'ices and users.


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C%er REFERENCES

0. M. Sat+anara+anan& Fundamental challenges in mobile computing, in

Proceedings ofthe 5th annual ACM symposium on Principles of distributedcomputing& Ma+ 0HH##.cs.cmu.edu(Jcoda(docdir(podcHE.pd!,etrei'ed onMa+ 6B06

6. Sarah Pere>& )u%ust 4& 6BBH& Why cloud computing is the future of mobile&http:((###.read#rite#e$.com(archi'es(#h+Kc"oudKcomputin%KisKtheK!utureKo!Kmo$i" e.php& etrei'ed on Ma+ 6B06

?. ian -)nd+


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on Ma+ 6B06

06.*S Mobile 1ata Mar)et *pdates& Chetan Sharma Consu"tin%& 6B0B&http:((###.chetansharma.com(usmar,etupdate2?6B0B.htm& etrei'ed on Ma+6B06

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