Performance of IPv6¡¯s Macro£¯Micro-Mobility
Protocols and the Solution of Optimal Region Size
Wang Shengling1,Hou Yibin2,Huang Jianhui1,Huang Zhangqin2
(1.School of Electronics and Information Engineering,Xi'an Jiaotong University,Xi'an
710049,China;2. College of Software Engineering,
Beijing University of Technology,Beijing 10002,China)
Abstract:Through performance comparison between macro-mobility protocols and
mirco-mobility protocols,it is qualitatively pointed that only when region size increases
to some degrees,the latter can get better registration performance profits than the
former,but it must pay extra packet transmission costs,which increase with the increase of
region size.The total cost function was defined as the sum of the obtained average
registration performance profits and the paid extra average costs for packet transmission
of the micro-mobility protocols relative to the macro-mobility.After that,an algorithm was
presented to find the optimal region size minimizing the total cost function,which enables
micro-mobility protocols to obtain higher gains with lower costs.Analyses show that when
accessing router, the mobile host (MH)¡¯s average residence time and its average packet
arrival rate decrease,the total cost value decreases and the optimal region size
increases; when the distance between MH¡¯s current network and home network decreases,the
total cost value increases.
Keywords:macro-mobility protocol;micro-mobility protocol;total cost function