Title :
On Total Call Setup Waiting Time Probability Distribution in IMS Signaling Network
Author :
Amooee, A.M. ; Falahati, Abolfazl
Author_Institution :
Digital Commun. & Control Syst. Lab., Iran Univ. of Sci. & Technol., Tehran, Iran
Abstract :
This paper, in accordance with the authors´ continuing research investigates the effect of adding extra servers in Session Initiation Protocol (SIP) signaling network on session setup delay in the IP Multimedia Subsystem (IMS). The effect of applying more than one server in reducing waiting time in each of the nodes of the system is previously investigated by the authors in and applying more servers as a way of overcoming overload in IMS is addressed in. In this contribution, the delay analysis is explored by describing the SIP signaling traffic with M/M/r notation. Then the SIP servers overload problem is addressed and the effect of adding servers on network throughput and call loss probability is investigated. Finally, the total waiting time probability distribution is derived.
Keywords :
IP networks; Internet; multimedia communication; queueing theory; signalling protocols; statistical distributions; telecommunication traffic; transport protocols; IMS signaling network; IP multimedia subsystem; Internet session setup delay analysis; M/M/r notation; SIP server overload problem; SIP signaling traffic; call loss probability; network throughput; session initiation protocol; total-call-setup waiting time probability distribution; Communication system control; Digital communication; Digital control; Internet; Network servers; Next generation networking; Probability distribution; Protocols; Throughput; Web server; Call Setup Waiting Time Probability Distribution; IP Multimedia Subsystem; Multi-server Queuing systems; Session Initiation Protocol;
Conference_Titel :
Next Generation Mobile Applications, Services and Technologies, 2009. NGMAST '09. Third International Conference on
Conference_Location :
Cardiff, Wales
Print_ISBN :
978-0-7695-3786-3
DOI :
10.1109/NGMAST.2009.14
