Support of micro-mobility in MPLS-based wireless access networks

TitleSupport of micro-mobility in MPLS-based wireless access networks
Publication TypeConference Paper
Year of Publication2003
AuthorsXie, K., V. W. S. Wong, and V. C. M. Leung
Conference NameWireless Communications and Networking, 2003. WCNC 2003. 2003 IEEE
Pagination1242 -1247 vol.2
Date Publishedmar.
Keywordsaccess protocols, base station, cellular IP, handoff processing, HAWAII, hierarchical mobile IP, Internet, Internet protocol, IP micromobility protocol, IP networks, label switched path setup, LSP, MAC buffer, MAC layer, medium access control, micromobility management, mobile computing, MPLS, multiprotocol label switching, packet caching, packet forwarding, packet loss, packet radio networks, paging, radio access networks, service differentiation, TCP throughput, telecommunication network management, traffic engineering, transport protocols, wireless access network

Multi-protocol label switching (MPLS) has begun to deploy in the Internet backbone to support service differentiation and traffic engineering. In recent years, there has also been an interest to extend the MPLS capability to the wireless access networks. In this paper, we provide an overview of the MPLS-based micro-mobility management including label switching path setup, packet forwarding, handoff processing, and paging. In order to prevent packet loss during handoff, we propose a medium access protocol (MAC) layer assisted packet recovery scheme. A MAC buffer in the old base station caches the packets dropped by MAC layer and forwards these packets to the new base station. Simulation results show that our proposed scheme can eliminate the packet loss due to handoff and improve the TCP throughput dramatically when compared with IP micro-mobility protocols including cellular IP, HAWAII, and hierarchical mobile IP.


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