Quantitative analysis of enhanced mobile IP
Citation
Best, Patricia K. and Ravi Pendse. 2006. Quantitative Analysis of Enhanced Mobile IP. IEEE Communications Magazine, v.44, n.6, pp.66-72
Abstract
As the popularity of mobile computing grows,
the associated protocols and their scalability are
subject to much closer scrutiny. Mobile IP relies
heavily on the use of IP-to-IP tunneling, requiring
20 bytes of overhead for every packet routed
to or from a mobile node, assuming reverse tunneling
is enabled. The goal of this research was
to show that Enhanced Mobile IP (EMIP) eliminated
the overhead by replacing tunneling with
Network Address Port Translation (NAPT)
without significantly impacting other performance
factors. EMIP was implemented and
benchmarks were used to compare EMIP and
Mobile IP. The percentage of overhead with
EMIP approached zero as the number of packets
exchanged increased, while the percentage of
overhead with Mobile IP remained constant.
Once three or more round-trip packets were
exchanged, the overhead of EMIP was less than
Mobile IP, and when 1000 round-trip packets
were exchanged, EMIP resulted in a bandwidth
savings of almost 40,000 bytes. To achieve the
bandwidth savings, EMIP introduced a one-time
delay in session startup ranging from 160 to 260
ms when compared to Mobile IP, but it does not
significantly impact the scalability or overall performance
of the protocol. Therefore, the
decrease in bandwidth consumed by the overhead
of EMIP greatly outweighs the one-time
delay and additional memory required.
Description
DOI: 10.1109/MCOM.2006.1668422