Vertical Handoff between WWAN and WLAN
- Publisher:
- IEEE Computer Society
- Publication Type:
- Conference Proceeding
- Citation:
- Proceedings of International Conference on Networking, International Conference on Systems and International Conference on Mobile Communications and Learning Technologies (ICNICONSMCL'06), 2006, pp. 132 - 137
- Issue Date:
- 2006-01
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2006004737.pdf | 564.71 kB |
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This paper reports on the design and implementation of an IP-centric vertical handoff decision algorithm and execution scheme between a wireless wide area network (WWAN) and a wireless local area network (WLAN) as part of the "IP-centric Field Workforce Automation". The project aims to ensure free movement of field workers between networks while always connected in an IP mode, and to allow a user to use one device across many types of networks. We use a fuzzy logic inference system to process a multi-criteria vertical handoff decision metrics, and present a mobility management scheme for IP-based networks using the transport layer protocol SCTP and the application layer protocol SIP. The multi-homing capability and DAR extension of SCTP are applied to provide vertical handoff between heterogeneous networks. SIP is used to provide location management when a fixed node initiates an association with a mobile node.
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