<?xml version="1.0" encoding="utf-8"?>
<journal>
<title>Iranian Communication and Information Technology</title>
<title_fa>فصلنامه فناور اطلاعات و اتباطات ایران</title_fa>
<short_title>فصلنامه فناوری اطلاعات</short_title>
<subject>Engineering &amp; Technology</subject>
<web_url>http://jor.iranaict.ir</web_url>
<journal_hbi_system_id>1</journal_hbi_system_id>
<journal_hbi_system_user>admin</journal_hbi_system_user>
<journal_id_issn></journal_id_issn>
<journal_id_issn_online></journal_id_issn_online>
<journal_id_pii></journal_id_pii>
<journal_id_doi></journal_id_doi>
<journal_id_iranmedex></journal_id_iranmedex>
<journal_id_magiran></journal_id_magiran>
<journal_id_sid></journal_id_sid>
<journal_id_nlai></journal_id_nlai>
<journal_id_science></journal_id_science>
<language>fa</language>
<pubdate>
	<type>jalali</type>
	<year>1387</year>
	<month>10</month>
	<day>1</day>
</pubdate>
<pubdate>
	<type>gregorian</type>
	<year>2009</year>
	<month>1</month>
	<day>1</day>
</pubdate>
<volume>1</volume>
<number>1</number>
<publish_type>online</publish_type>
<publish_edition>1</publish_edition>
<article_type>fulltext</article_type>
<articleset>
	<article>


	<language>fa</language>
	<article_id_doi></article_id_doi>
	<title_fa>یک روش چند عاملی جدید مبتنی بر یادگیری تقویتی برای شکل‌دهی ترافیک و تخصیص حافظه بافر در روترها </title_fa>
	<title>A new reinforcement learning based multi-agent method for traffic shaping and buffer allocation in routers</title>
	<subject_fa>فناوری اطلاعات و ارتباطات</subject_fa>
	<subject>ICT</subject>
	<content_type_fa>پژوهشي</content_type_fa>
	<content_type>Research</content_type>
	<abstract_fa>&lt;div align=&quot;right&quot; style=&quot;direction: rtl&quot;&gt;
چکیده 
&lt;br&gt;دراین مقاله با توجه به ساختار توزیع شده شبکه‌های کامپیوتری و رفتار تصادفی موجود در آنها و از طرف دیگر محدودیت‌های زمانی که در الگوریتم‌های کنترلی برای اینگونه سیستمها وجود دارد، از مفاهیم سیستم‌های چند عاملی و تکنیک‌های یادگیری تقویتی برای شکل دهی ترافیک در روترها و تخصیص دینامیک حافظه بافر بین پورت های مختلف یک روتر استفاده شده است. در واقع با استفاده از این مفاهیم شکل دهنده ترافیک جدیدی بر مبنای یک الگوریتم سطل نشانه‌دار توسعه داده شده است که در آن به جای آنکه نرخ تولید نشانه‌ها به طور استاتیک تخصیص داده شود به  طور دینامیک و هوشمند و بر مبنای وضعیت شبکه مشخص می‌شود. این پیاده‌سازی علاوه بر آنکه به استفاده بهینه و منطقی از پهنای باند منجر می‌شود باعث می‌گردد ترافیک در دیگر نقاط شبکه نیز کاهش یابد. همچنین از این مفاهیم استفاده می‌شود تا یک روش جدید برای تخصیص هوشمند و دینامیک حافظه بافر برای پورت‌های یک روتر توسعه داده شود. این پیاده‌سازی نیز باعث می‌گردد تا نرخ افت بسته‌ها در کل شبکه به وی‍‍‍‍‍‍‍ژه در شرایطی که بار شبکه افزایش می‌یابد کاهش داده شود. نتایج شبیه‌سازی‌های انجام شده کار آمدی روش پیشنهادی را نشان می‌دهد. 

&lt;/div&gt;</abstract_fa>
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&lt;p style=&quot;text-align: justify line-height: 150%&quot; class=&quot;MsoNormal&quot;&gt;&lt;b&gt;&lt;span&gt;Abstract&lt;/span&gt;&lt;/b&gt;&lt;/p&gt;

&lt;p style=&quot;text-align: justify line-height: 150%&quot; class=&quot;MsoNormal&quot;&gt;&lt;span&gt;In this paper, realizing the distributed structure
of computer networks,&lt;span&gt; &lt;/span&gt;the random behaviors
in such networks, and the time limitations for control algorithms, the concepts
of reinforcement learning and multi-agent systems are invoked for traffic
shaping and buffer allocation between various ports of a router. In fact, a new
traffic shaper based on token bucket has been developed. In this traffic
shaper, instead of a static token production rate, a dynamic and intelligent
rate based on the network condition is specified. This results in a reasonable
utilization of bandwidth while preventing traffic overload in other part of the
network. Besides, based on the stated techniques a new method for dynamic
buffer allocation in the ports of a router is developed. This leads to a
reduction in the total number of packet dropping in the whole network.
Simulation results show the effectiveness of the proposed techniques. &lt;span lang=&quot;FA&quot; dir=&quot;rtl&quot;&gt;&lt;/span&gt;&lt;/span&gt;&lt;/p&gt;



</abstract>
	<keyword_fa>شبکه کامپیوتری، سیستم چند عاملی، حافظه بافر، روتر، شکل‌دهی ترافیک</keyword_fa>
	<keyword>SIP, Performance Evaluation, configuration, mobility management.  </keyword>
	<start_page>19</start_page>
	<end_page>30</end_page>
	<web_url>http://jor.iranaict.ir/browse.php?a_code=A-10-354-3&amp;slc_lang=fa&amp;sid=1</web_url>


<author_list>
	<author>
	<first_name>Aliakbar</first_name>
	<middle_name></middle_name>
	<last_name>safavi</last_name>
	<suffix></suffix>
	<first_name_fa>سید علی اکبر </first_name_fa>
	<middle_name_fa></middle_name_fa>
	<last_name_fa>صفوی</last_name_fa>
	<suffix_fa></suffix_fa>
	<email>safavi@shirazu.ac.ir</email>
	<code>1003194753284600520</code>
	<orcid>1003194753284600520</orcid>
	<coreauthor>Yes
</coreauthor>
	<affiliation>School of Electrical and Computer Engineering, Shiraz University</affiliation>
	<affiliation_fa>دانشکده مهندسی برق و کامپیوتر، دانشگاه شیراز</affiliation_fa>
	 </author>


	<author>
	<first_name>mohammad</first_name>
	<middle_name></middle_name>
	<last_name>Taheri tehrani</last_name>
	<suffix></suffix>
	<first_name_fa>محمد</first_name_fa>
	<middle_name_fa></middle_name_fa>
	<last_name_fa> طاهری تهرانی</last_name_fa>
	<suffix_fa></suffix_fa>
	<email></email>
	<code>1003194753284600521</code>
	<orcid>1003194753284600521</orcid>
	<coreauthor>No</coreauthor>
	<affiliation>School of Electrical and Computer Engineering, Shiraz University</affiliation>
	<affiliation_fa>دانشکده مهندسی برق و کامپیوتر، دانشگاه شیراز</affiliation_fa>
	 </author>


	<author>
	<first_name>Mohammad Rafiee</first_name>
	<middle_name></middle_name>
	<last_name>Kharazmi</last_name>
	<suffix></suffix>
	<first_name_fa>محمد رفیع </first_name_fa>
	<middle_name_fa></middle_name_fa>
	<last_name_fa>خوارزمی</last_name_fa>
	<suffix_fa></suffix_fa>
	<email></email>
	<code>1003194753284600522</code>
	<orcid>1003194753284600522</orcid>
	<coreauthor>No</coreauthor>
	<affiliation>School of Electrical Engineering, Shiraz University of Technology</affiliation>
	<affiliation_fa>دانشکده مهندسی برق، دانشگاه صنعتی شیراز</affiliation_fa>
	 </author>


</author_list>


	</article>
</articleset>
</journal>
