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Information 2014, 5(4), 535-547; doi:10.3390/info5040535

SMR-Based Adaptive Mobility Management Scheme in Hierarchical SIP Networks

1
Department of Business Solution Development, LG Uplus, Daejeon 305-350, Korea
2
School of Information Technology Engineering, Catholic University of Daegu, Gyeongbuk 712-702, Korea
*
Author to whom correspondence should be addressed.
Received: 9 July 2014 / Revised: 22 September 2014 / Accepted: 28 September 2014 / Published: 21 October 2014
(This article belongs to the Special Issue Ubiquitous Systems and Services for IT Convergence)
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Abstract

In hierarchical SIP networks, paging is performed to reduce location update signaling cost for mobility management. However, the cost efficiency largely depends on each mobile node’s session-to-mobility-ratio (SMR), which is defined as a ratio of the session arrival rate to the movement rate. In this paper, we propose the adaptive mobility management scheme that can determine the policy regarding to each mobile node’s SMR. Each mobile node determines whether the paging is applied or not after comparing its SMR with the threshold. In other words, the paging is applied to a mobile node when a mobile node’s SMR is less than the threshold. Therefore, the proposed scheme provides a way to minimize signaling costs according to each mobile node’s SMR. We find out the optimal threshold through performance analysis, and show that the proposed scheme can reduce signaling cost than the existing SIP and paging schemes in hierarchical SIP networks. View Full-Text
Keywords: SIP; SMR; paging; location update; location management SIP; SMR; paging; location update; location management
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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Choi, K.; Gil, J.-M. SMR-Based Adaptive Mobility Management Scheme in Hierarchical SIP Networks. Information 2014, 5, 535-547.

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