Evaluation of Handover Latency in Intra- Domain Mobility

Authors: Aisha Hassan Abdalla Hashim, Fauzana Ridzuan, Nazreen Rusli

Abstract:

Mobile IPv6 (MIPv6) describes how mobile node can change its point of attachment from one access router to another. As a demand for wireless mobile devices increases, many enhancements for macro-mobility (inter-domain) protocols have been proposed, designed and implemented in Mobile IPv6. Hierarchical Mobile IPv6 (HMIPv6) is one of them that is designed to reduce the amount of signaling required and to improve handover speed for mobile connections. This is achieved by introducing a new network entity called Mobility Anchor Point (MAP). This report presents a comparative study of the Hierarchical Mobility IPv6 and Mobile IPv6 protocols and we have narrowed down the scope to micro-mobility (intra-domain). The architecture and operation of each protocol is studied and they are evaluated based on the Quality of Service (QoS) parameter; handover latency. The simulation was carried out by using the Network Simulator-2. The outcome from this simulation has been discussed. From the results, it shows that, HMIPv6 performs best under intra-domain mobility compared to MIPv6. The MIPv6 suffers large handover latency. As enhancement we proposed to HMIPv6 to locate the MAP to be in the middle of the domain with respect to all Access Routers. That gives approximately same distance between MAP and Mobile Node (MN) regardless of the new location of MN, and possible shorter distance. This will reduce the delay since the distance is shorter. As a future work performance analysis is to be carried for the proposed HMIPv6 and compared to HMIPv6.

Keywords: Intra-domain mobility, HMIPv6, Handover Latency, proposed HMIPv6.

Digital Object Identifier (DOI): doi.org/10.5281/zenodo.1060265

References:

[1] Subrata Goswami, "Simultaneous Handoff of Mobile-IPv4 and 802.11," draft-goswami-mobileip-simultaneous-handoff-v4-01.txt, February 15, 2003.
[2] D. Johnson, C. Perkins, "Mobility Support in IPv6," draft-ietf-mobileipipv6- 24.txt, December 29, 2003.
[3] Hesham Soliman, Flarion Claude Castelluccia, Karim El Malki & Ludovic Bellier, "Hierarchical Mobile IPv6 mobility management," HMIPv6 draft-ietf-mipshop-hmipv6-01.txt, February, 2004.
[4] "The Network Simulator ns-2" Available: http://www.isi.edu/nsnam.
[5] Jorg Widmer, "Extension to the ns Network Simulator" Available: www.icsi.berkeley.edu/~widmer/mnav/ns-.