International Journal of Information and Communication Technology Research
مجله بین المللی ارتباطات و فناوری اطلاعات
International Journal of Information and Communication Technology Research
Engineering & Technology
http://ijict.itrc.ac.ir
1
admin
2251-6107
2783-4425
doi
1652
25391
en
jalali
1393
9
1
gregorian
2014
12
1
6
4
online
1
fulltext
fa
An Overload Window Control Method Based on Fuzzy Logic to Improve SIP Performance
فناوری اطلاعات
Information Technology
پژوهشي
Research
Having facilities such as being in text form, having end-to-end connection establishment and being independent from type of transmitted data, SIP protocol is a good choice for signaling protocol in order to set up a connection between two users of an IP network. However, utilization of SIP protocol in a wide range of applications has made various vulnerabilities in this protocol, amongst which overload could make serious problems in SIP servers. An SIP is overloaded when it does not have sufficient resources (majorly CPU processing power and memory) to process all messages. In this paper, attempts were made to improve window-based overload control in RFC 6537. In window-based overload control method, a window is used to limit the number of messages that are sent to an overloaded SIP proxy simultaneously. In this paper, first, fuzzy logic was used to regulate accurate size of window and then it was developed, implemented and evaluated on an Asterisk open-source proxy. Implementation results showed that this method could practically maintain throughput under overload conditions, dynamically change the maximum window size, and also fairly treat among various upstream servers.
SIP, Overload control, Window based, Asterisk proxy, Fuzzy logic
13
25
http://ijict.itrc.ac.ir/browse.php?a_code=A-10-27-87&slc_lang=fa&sid=1
Ahmad Reza
Montazerolghaem
1003194753284600274
1003194753284600274
Yes
Mohammad Hossein
Yaghmaee Moghaddam
1003194753284600275
1003194753284600275
No