SMR-Based Adaptive Mobility Management Scheme in Hierarchical SIP Networks

Information

KwangHee Choi²  Joon-Min Gil¹ 

[1] School of Information Technology Engineering, Catholic University of Daegu, Gyeongbuk 712-702, Korea;Department of Business Solution Development, LG Uplus, Daejeon 305-350, Korea; E-Mail:

关键词: SIP;    SMR;    paging;    location update;    location management;   

DOI  :  10.3390/info5040535

来源: mdpi

【 摘 要 】

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.

【 授权许可】

CC BY   
© 2014 by the authors; licensee MDPI, Basel, Switzerland.