A Case Study-based Performance Evaluation Framework for CSCF Processes on a Blade-Server

The architecture of IP Multimedia Subsystem (IMS) enables converged voice, video, and data services and contains mechanisms related to session and connection control. Numerous protocols are used to perform IMS operations however the Session Initiation Protocol (SIP) plays a central role in the functionality of IMS. With increased demand for multimedia communications functionality, a software implementation of IMS limits performance and increases power consumption when controlling applications through devices like gateways, proxies and application servers. Therefore a strong desire exists to implement SIP using low power consumption hardware platforms very fast time responses. The large integration scale of the present chip technology allows for implementing all SIP mechanisms and interfaces in a single integrated chip or ASIC. In this paper, a reconfigurable hardware implementation of the session setup of IMS is described based on a hardware implementation of SIP.

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“…In particular, significant processing times are observed in the Call/Session Control Functions of IMS [6].…”

Section: Introductionmentioning

confidence: 98%

A reconfigurable architecture for IP Multimedia Subsystem session setup

Peterkin

El-Hassan

Ionescu

2010

2010 International Joint Conference on Computational Cybernetics and Technical Informatics

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“…References [6-9] focus on the wireless links. References [10,11] focus on the SIP/IMS core and [12][13][14] focus on a signal SIP node. In this paper, we focus on the service layer of IMS and study the performance of the service triggering network consisted of the S-CSCF and ASs and not a single node or SIP protocol itself.…”

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confidence: 99%

A call‐state‐based service triggering algorithm for IMS network

Liao

Xun

Wang

et al. 2008

Int J Communication

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SUMMARYTo determine the potential signaling traffic reductions, the session establishment procedures were investigated. The investigation showed that the serving call session control function (S-CSCF) is the major bottleneck in IP multimedia subsystem (IMS) network and the existing third-generation partnership project (3GPP) service triggering algorithm (3GPP STA) based on initial filter criteria (iFC) increases largely the end-to-end session setup delay (SSD). To reduce the SSD and improve the system performance, a call-state-based application triggering architecture (CATA) was proposed. In CATA, the call-state-based filter criteria and the call-state-based service triggering algorithm (CSTA) were proposed, and then the modeling of 3GPP STA and CSTA was presented. Theoretical analysis and simulation results showed that the CSTA avoids the additional signaling traffic load of the S-CSCF and application server effectively, which exists in 3GPP STA, reduces the SSD considerably, increases the throughput of the S-CSCF and improves the quality of service of IMS network.

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