Iranian Communication and Information Technology
فصلنامه فناور اطلاعات و اتباطات ایران
فصلنامه فناوری اطلاعات
Engineering & Technology
http://jor.iranaict.ir
1
admin
fa
jalali
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gregorian
2009
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ارزیابی پیکربندیهای مختلف شبکه سیگنالینگ SIP با استفاده از اندازهگیری پارامترهای کیفیت برقراری تماس
Evaluation of SIP signaling implementation using QoS parameters
فناوری اطلاعات و ارتباطات
ICT
پژوهشي
Research
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<p style="text-align: right direction: rtl unicode-bidi: embed" dir="rtl" class="MsoNormal"><b><span lang="FA" style="font-size: 13pt font-family: "B Lotus"">چکیده<a name="_ftnref1" href="#_ftn1"><span class="MsoFootnoteReference"><span style="color: white"><span dir="ltr"><span class="MsoFootnoteReference"><b><span style="font-size: 13pt font-family: "Times New Roman","serif" color: white"></span></b></span></span></span></span></a></span></b></p>
<span lang="AR-SA" style="font-size: 11pt font-family: "B Lotus"" dir="rtl">گستردگی و تنوع سرویس</span><span style="font-size: 11pt font-family: "Times New Roman","serif""></span><span lang="AR-SA" style="font-size: 11pt font-family: "B Lotus"" dir="rtl">های فراهم شده توسط شبکه</span><span style="font-size: 11pt font-family: "Times New Roman","serif""></span><span lang="AR-SA" style="font-size: 11pt font-family: "B Lotus"" dir="rtl">های
</span><span style="font-size: 9pt font-family: "Times New Roman","serif"">IP</span><a name="_ftnref2" href="#_ftn2"><span class="MsoFootnoteReference"><span lang="AR-SA" style="font-size: 11pt font-family: "B Lotus"" dir="rtl"><span dir="ltr"><span class="MsoFootnoteReference"><span style="font-size: 11pt font-family: "Times New Roman","serif"">[2]</span></span></span></span></span></a><span lang="AR-SA" style="font-size: 11pt font-family: "B Lotus"" dir="rtl"> باعث شده تا انواع مختلف شبکه</span><span lang="FA" style="font-size: 11pt font-family: "B Lotus"" dir="rtl"></span><span lang="AR-SA" style="font-size: 11pt font-family: "B Lotus"" dir="rtl">های دسترسی به سمت
استفاده از این پروتکل حرکت کنند</span><span lang="FA" style="font-size: 11pt font-family: "B Lotus"" dir="rtl"> که
این خود</span><span lang="AR-SA" style="font-size: 11pt font-family: "B Lotus"" dir="rtl"> می</span><span style="font-size: 11pt font-family: "Times New Roman","serif""></span><span lang="AR-SA" style="font-size: 11pt font-family: "B Lotus"" dir="rtl">تواند
به مجتمعسازی شبکه</span><span lang="FA" style="font-size: 11pt font-family: "B Lotus"" dir="rtl"></span><span lang="AR-SA" style="font-size: 11pt font-family: "B Lotus"" dir="rtl">های دسترسی مختلف کمک نماید. پروتکل </span><span style="font-size: 9pt font-family: "Times New Roman","serif"">SIP</span><a name="_ftnref3" href="#_ftn3"><span class="MsoFootnoteReference"><span lang="AR-SA" style="font-size: 11pt font-family: "B Lotus"" dir="rtl"><span dir="ltr"><span class="MsoFootnoteReference"><span style="font-size: 11pt font-family: "Times New Roman","serif"">[3]</span></span></span></span></span></a><span lang="AR-SA" style="font-size: 11pt font-family: "B Lotus"" dir="rtl"> با توجه به امکاناتی چون متنی بودن، برقراری تماس انتها</span><span lang="FA" style="font-size: 11pt font-family: "B Lotus"" dir="rtl"></span><span lang="AR-SA" style="font-size: 11pt font-family: "B Lotus"" dir="rtl">به</span><span lang="FA" style="font-size: 11pt font-family: "B Lotus"" dir="rtl"></span><span lang="AR-SA" style="font-size: 11pt font-family: "B Lotus"" dir="rtl">انتها، استقلال از نوع
داده انتقالی</span><span lang="FA" style="font-size: 11pt font-family: "B Lotus"" dir="rtl"> و مهمتر از همه پشتیبانی از انواع جابجایی<a name="_ftnref4" href="#_ftn4"><span class="MsoFootnoteReference"><span dir="ltr"><span class="MsoFootnoteReference"><span style="font-size: 11pt font-family: "Times New Roman","serif"">[4]</span></span></span></span></a>،
</span><span lang="AR-SA" style="font-size: 11pt font-family: "B Lotus"" dir="rtl">انتخاب مناسبی برای </span><span lang="FA" style="font-size: 11pt font-family: "B Lotus"" dir="rtl">پروتکل</span><span lang="AR-SA" style="font-size: 11pt font-family: "B Lotus"" dir="rtl"> سیگنالینگ جهت برقراری ارتباط بین دو کاربر شبکه </span><span style="font-size: 9pt font-family: "Times New Roman","serif"">IP</span><span dir="rtl"></span><span lang="AR-SA" style="font-size: 11pt font-family: "B Lotus"" dir="rtl"><span dir="rtl"></span> است. </span><span lang="FA" style="font-size: 11pt font-family: "B Lotus"" dir="rtl">این مزایا موجب شده تا</span><span lang="FA" style="font-size: 11pt font-family: "B Lotus"" dir="rtl"> </span><span style="font-size: 9pt font-family: "Times New Roman","serif"">SIP</span><span dir="rtl"></span><span lang="AR-SA" style="font-size: 11pt font-family: "B Lotus"" dir="rtl"><span dir="rtl"></span> ب</span><span lang="FA" style="font-size: 11pt font-family: "B Lotus"" dir="rtl">ه</span><span lang="AR-SA" style="font-size: 11pt font-family: "B Lotus"" dir="rtl">عنوان پروتکل سیگنالینگ </span><span lang="AR-SA" style="font-size: 9pt font-family: "B Lotus"" dir="rtl">در</span><span style="font-size: 9pt font-family: "Times New Roman","serif"">IMS</span><span style="font-size: 11pt font-family: "Times New Roman","serif""> </span><a name="_ftnref5" href="#_ftn5"><span class="MsoFootnoteReference"><span lang="AR-SA" style="font-size: 11pt font-family: "B Lotus"" dir="rtl"><span dir="ltr"><span class="MsoFootnoteReference"><span style="font-size: 11pt font-family: "Times New Roman","serif"">[5]</span></span></span></span></span></a><span lang="FA" style="font-size: 11pt font-family: "B Lotus"" dir="rtl">،</span><span lang="AR-SA" style="font-size: 11pt font-family: "B Lotus"" dir="rtl"> که بستر سیگنالینگ
پیشنهادی برای شبکه</span><span lang="FA" style="font-size: 11pt font-family: "B Lotus"" dir="rtl"></span><span lang="AR-SA" style="font-size: 11pt font-family: "B Lotus"" dir="rtl">های نسل آینده است</span><span lang="FA" style="font-size: 11pt font-family: "B Lotus"" dir="rtl">، </span><span lang="AR-SA" style="font-size: 11pt font-family: "B Lotus"" dir="rtl">درنظرگرفته ش</span><span lang="FA" style="font-size: 11pt font-family: "B Lotus"" dir="rtl">ود</span><span lang="AR-SA" style="font-size: 11pt font-family: "B Lotus"" dir="rtl">.</span><span lang="FA" style="font-size: 11pt font-family: "B Lotus"" dir="rtl"> با همه این مزایا،
عملکرد دقیق این پروتکل در صورتی که توسط کاربران میلیونی شبکه مورد استفاده
گسترده قرارگیرد، مشخص نیست. در این مقاله با استفاده از بستر تست توسعه داده شده،
کارایی پروتکل </span><span style="font-size: 9pt font-family: "Times New Roman","serif"">SIP</span><span dir="rtl"></span><span lang="FA" style="font-size: 11pt font-family: "B Lotus"" dir="rtl"><span dir="rtl"></span> مورد ارزیابی دقیق قرار گرفته
شده است و پارامترهایی چون تأخیر برقراری تماس، نرخ تماسهای ناموفق و بار پردازشی
پروکسی<a name="_ftnref6" href="#_ftn6"><span class="MsoFootnoteReference"><span dir="ltr"><span class="MsoFootnoteReference"><span style="font-size: 11pt font-family: "Times New Roman","serif"">[6]</span></span></span></span></a>
در قالب هشت پیکربندی مختلف مورد بررسی قرار گرفته است. همچنین اثر نوع پروتکل
لایه انتقال </span><span style="font-size: 9pt font-family: "Times New Roman","serif"">TCP</span><span dir="rtl"></span><span lang="FA" style="font-size: 11pt font-family: "B Lotus"" dir="rtl"><span dir="rtl"></span> و </span><span style="font-size: 9pt font-family: "Times New Roman","serif"">UDP</span><span dir="rtl"></span><span lang="FA" style="font-size: 11pt font-family: "B Lotus"" dir="rtl"><span dir="rtl"></span> روی کارایی </span><span style="font-size: 9pt font-family: "Times New Roman","serif"">SIP</span><span dir="rtl"></span><span lang="FA" style="font-size: 11pt font-family: "B Lotus"" dir="rtl"><span dir="rtl"></span> تحلیل شده است. نتایج بدست آمده از
این بررسی نشان میدهد که استفاده از </span><span style="font-size: 9pt font-family: "Times New Roman","serif"">SIP</span><span dir="rtl"></span><span lang="FA" style="font-size: 11pt font-family: "B Lotus"" dir="rtl"><span dir="rtl"></span> در شبکههای بزرگ مستلزم بکارگیری
تکنیکهایی جهت متعادل نمودن بار پروکسیها و همچنین جلوگیری از اضافه بارهای موقت
میباشد</span>
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<p style="text-align: right direction: rtl unicode-bidi: embed" dir="rtl" class="MsoFootnoteText"><a name="_ftn1" href="#_ftnref1"></a><span dir="rtl"></span><span lang="AR-SA" style="font-size: 9pt font-family: "B Lotus""><span dir="rtl"></span></span><span style="font-size: 8pt" dir="ltr"> </span><span dir="ltr"> </span><span lang="FA"></span></p>
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<div id="ftn2">
<p class="MsoFootnoteText"><a name="_ftn2" href="#_ftnref2"><span class="MsoFootnoteReference"><span style="font-size: 9pt"><span><span class="MsoFootnoteReference"><span style="font-size: 9pt font-family: "Times New Roman","serif"">[2]</span></span></span></span></span></a><span style="font-size: 9pt">.</span><span style="font-size: 9pt">Internet Protocol (IP)</span></p>
</div>
<div id="ftn3">
<p class="MsoFootnoteText"><a name="_ftn3" href="#_ftnref3"><span class="MsoFootnoteReference"><span style="font-size: 9pt"><span><span class="MsoFootnoteReference"><span style="font-size: 9pt font-family: "Times New Roman","serif"">[3]</span></span></span></span></span></a><span style="font-size: 9pt">.</span><span style="font-size: 9pt">Session Initionation Protocol (SIP)</span></p>
</div>
<div id="ftn4">
<p class="MsoFootnoteText"><a name="_ftn4" href="#_ftnref4"><span class="MsoFootnoteReference"><span style="font-size: 9pt"><span><span class="MsoFootnoteReference"><span style="font-size: 9pt font-family: "Times New Roman","serif"">[4]</span></span></span></span></span></a><span style="font-size: 9pt">.Mobility </span><span style="font-size: 9pt"></span></p>
</div>
<div id="ftn5">
<p class="MsoFootnoteText"><a name="_ftn5" href="#_ftnref5"><span class="MsoFootnoteReference"><span style="font-size: 9pt"><span><span class="MsoFootnoteReference"><span style="font-size: 9pt font-family: "Times New Roman","serif"">[5]</span></span></span></span></span></a><span style="font-size: 9pt">.IP Multimedia Subsystem (IMS)</span><span style="font-size: 9pt"></span></p>
</div>
<div id="ftn6">
<p class="MsoFootnoteText"><a name="_ftn6" href="#_ftnref6"><span class="MsoFootnoteReference"><span style="font-size: 9pt"><span><span class="MsoFootnoteReference"><span style="font-size: 9pt font-family: "Times New Roman","serif"">[6]</span></span></span></span></span></a><span style="font-size: 9pt">.Proxy</span><span lang="FA" style="font-size: 9pt" dir="rtl"></span></p>
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<p style="text-align: justify line-height: 150%" class="MsoNormal"><b>Abstract</b></p>
<p style="text-align: justify line-height: 150%" class="MsoNormal">The variety of
services on IP networks and the need for network technology convergence have
resulted in many access networks to adopt the IP technology. The Session
Initiation Protocol (SIP) is an end to end application level protocol for
establishing, terminating and modifying sessions and has experienced widespread
use in IP networks due to its distinguished features such as being text based,
independence from the underlying network, and more importantly supporting
various types of mobility. In fact these features have lead SIP to be used as
the core signaling protocol in the IP Multimedia Subsystem, which is the
control plane proposed for next generation networks by the 3GPP community.
Nevertheless, the performance of SIP servers when used by the millions of users
of the next generation networks is not well established. In this paper we
evaluate the performance of SIP servers using a test bed developed at the Iran University
of Science & Technology. We consider eight different configurations for SIP
server and also study the effect of using TCP and UDP as the transport protocol
for SIP packets.<span> </span>We measure several
parameters including call setup delay, call failure rate and SIP server
throughput. Our results suggest that using SIP in large networks require using
special techniques for balancing the load of SIP servers as well as mitigating
temporary overloads.<b><span style="font-size: 11pt line-height: 150%"> </span></b></p>
SIP، ارزیابی کارایی، پیکره بندی، مدیریت جابجایی
computer network, multi- agent system, buffer, router, traffic shaping.
41
54
http://jor.iranaict.ir/browse.php?a_code=A-10-354-5&slc_lang=fa&sid=1
M.
Jahanbakhsh
مجتبی
جهانبخش
m_jahanbakhsh@comp.iust.ac.ir
1003194753284600526
1003194753284600526
Yes
School of Computer Engineering, Iran University of Science and Technology
دانشکده مهندسی کامپیوتر، دانشگاه علم وصنعت ایران
V.
Azhari
سید وحید
ازهری
1003194753284600527
1003194753284600527
No
School of Computer Engineering, Iran University of Science and Technology
دانشکده مهندسی کامپیوتر، دانشگاه علم وصنعت ایران
M.
Homayoun
مریم
همایونی
1003194753284600528
1003194753284600528
No
School of Computer Engineering, Iran University of Science and Technology
دانشکده مهندسی کامپیوتر، دانشگاه علم وصنعت ایران
A.
Akbari
احمد
اکبری
1003194753284600529
1003194753284600529
No
School of Computer Engineering, Iran University of Science and Technology
دانشکده مهندسی کامپیوتر، دانشگاه علم وصنعت ایران