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Wireless access to Internet services will become typical, rather than as it is today, the exception. Such a vision presents great demands on mobile networks. Mobile IP represents a simple and scalable global mobility solution but lacks support for fast handoo control and paging found in cellular telephony networks. In contrast, second and third generation(More)
We present a performance comparison of a number of key micro-mobility protocols that have been discussed in the IETF Mobile IP Working Group over the past several years. IP micro-mobility protocols complement Mobile IP by offering fast and seamless handoff control in limited geographical areas and IP paging in support of scalability and power conservation.(More)
The emergence of Bluetooth as a default radio interface allows handheld electronic devices to be rapidly interconnected into ad hoc networks. Bluetooth allows large numbers of piconets to form a scatternet using designated nodes that participate in multiple piconets. In this work we study the performance implications of forming scatternets from piconets.(More)
In the context of the research in the IST project BRAIN, an in-depth study of the problem of IP mobility within the access network was performed. Mobility management was broken down to individual issues, which were separately analysed. Requirements, design goals, and recommendations for an ideal solution were proposed. Various existing proposals were(More)
We propose 4+4, a simple address extension architecture for Internet that provides an evolutionary approach to extending the existing IPv4 address space in comparison to more complex and disruptive approaches best exemplified by IPv6 deployment. The 4+4 architecture leverages the existence of Network Address Translators (NATs) and private address realms,(More)
The functionality and efficiency of micro mobility schemes in wireless networks has a great impact on the overall performance of the whole network. In small cell wireless LAN environments, the network must support both frequent and numerous handovers at the same time. Together with providing fast and reliable handoffs, the micro mobility scheme must not(More)
— In this paper we consider an output port of an ATM switch, where cell streams belonging to different TCP and UDP sessions arrive. During congestion the switch applies Early Packet Discard in order to reduce bandwidth waste. In order to guarantee fairness in the sense that only misbehaving sources get affected by the packet drop mechanism and to ensure(More)
This paper presents results from the Cellular IP Project at Columbia University on Internet micromobility. Cellular IP complement Mobile IP with support for fast, seamless and local handoff control, and IP paging. We discuss the design, implementation and evaluation of the Cellular IP protocol using simulation, analysis and experimentation. We report on the(More)