A Novel Distributed SCIM Service Invocation Mechanism in IMS

Qi Qi; Liao Jian-xin; Zhu Xiao-min; Cao Yu-fei

doi:10.3724/SP.J.1146.2008.00991

Volume 31 Issue 8

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Qi Qi, Liao Jian-xin, Zhu Xiao-min, Cao Yu-fei. A Novel Distributed SCIM Service Invocation Mechanism in IMS[J]. Journal of Electronics & Information Technology, 2009, 31(8): 1969-1974. doi: 10.3724/SP.J.1146.2008.00991

Citation:

Qi Qi, Liao Jian-xin, Zhu Xiao-min, Cao Yu-fei. A Novel Distributed SCIM Service Invocation Mechanism in IMS[J]. Journal of Electronics & Information Technology, 2009, 31(8): 1969-1974. doi: 10.3724/SP.J.1146.2008.00991

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A Novel Distributed SCIM Service Invocation Mechanism in IMS

doi: 10.3724/SP.J.1146.2008.00991

Received Date: 2008-08-09
Rev Recd Date: 2008-12-31
Publish Date: 2009-08-19

Abstract

Abstract

In the service invocation mechanism of current IMS (IP Multimedia System) network, the Serving-Call Session Control Function (S-CSCF) invokes each Application Server (AS) sequentially to perform users service profile. This mechanism makes SIP request be forwarded excessively among the S-CSCF and Application Servers (ASs), so it is easy to result in the heavy load of the S-CSCF entity and long call set-up delay. This paper proposes a novel Distributed SCIM (DSCIM) service invocation mechanism. It aims at reducing the call set-up delay in IMS service layer along with decreasing the load of the S-CSCF entity by invoking each AS consecutively without signaling being forwarded back to the S-CSCF. The service invocation mechanisms are modeled through Jackson network and the simulations of different scenarios verify that DSCIM service invocation mechanism can effectively reduce call set-up delay of the network and decrease the load level of the S-CSCF.

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References(1)

References

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