On the Signaling Analysis of SIP-Based Terminal Mobility Management within IEEE 802.11 and 802.16 Heterogeneous Networks
نویسندگان
چکیده
This paper analyzes the SIP-based mobility management behavior within a heterogeneous network interconnecting IEEE 802.11-based wireless local area network (WLAN) and IEEE 802.16-based wireless metropolitan area network (WMAN). Our work focuses on signaling processes, during handoff between 802.11 and 802.16 networks. Particularly, the MAC layer technologies of 802.11 and 802.16 are examined in great detail. The SIP-based handoff procedure consists of the following sub-procedures: (i) Mobile Host (MH) initialization at MAC layer, (ii) Acquisition of a new IP address using Dynamic Host Configuration Protocol (DHCP) in a newly connected network, (iii) SIP terminal mobility management process for both pre-call mobility and mid-call mobility. Our analytical results and experimental results show the signaling delay and overhead of handoff between 802.11 and 802.16 heterogeneous networks.
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