Care-of address

About: Care-of address is a research topic. Over the lifetime, 260 publications have been published within this topic receiving 3761 citations.

Fast Handovers for Mobile IPv6

Abstract: Mobile IPv6 enables a Mobile Node to maintain its connectivity to the Internet when moving from one Access Router to another, a process referred to as handover. During handover, there is a period during which the Mobile Node is unable to send or receive packets because of link switching delay and IP protocol operations. This "handover latency" resulting from standard Mobile IPv6 procedures, namely movement detection, new Care of Address configuration, and Binding Update, is often unacceptable to real-time traffic such as Voice over IP. Reducing the handover latency could be beneficial to non-real- time, throughput-sensitive applications as well. This document specifies a protocol to improve handover latency due to Mobile IPv6 procedures. This document does not address improving the link switching latency. This memo defines an Experimental Protocol for the Internet community.

Wireless communication method and system for implementing media independent handover between technologically diversified access networks

Abstract: A wireless communication system including at least one IDDD 802 multi-stack wireless transmt/receive unit (WTRU) (110) and a plurality of technologically diversified acess networks, such as IEEE 802.X networks and Third Generation Partnership Project (3GPP) networks, that are concurrently deployed. Both the multi-stack WTRU (110) and the technologically diversified networks includ a media indipendent handover (MIH) function. The WTRU is configured to read MIH information transmitted from one of the IEEE 802.X networks, trigger 3GPP authentication and atuhorization procedures based on the MIH information, obtain a local Internet Protocol (IP) address, establish a tunnel to a packet data gateway (PDG) un a 3GPP core network, constructed a care of address (CoA) and register the CoA with a home agent (142) of the WTRU, whereby data destined for the WTRU (110) is routed via the home agent (142) through a new tunnel established between the home agent (142) and a foreign agent (136) based on the CoA. .

ARRANGEMENT FOR TRAVERSING AN IPv4 NETWORK BY IPv6 MOBILE NODES

Abstract: A source IPv6 mobile node is configured for forwarding an IPv6 packet via an IPv4 connection with a destination IPv6 router. The IPv4 packet includes IPv4 source and destination addresses, a UDP source port and UDP destination port, and a synthetic tag address in the IPv6 destination address field. The synthetic tag address, a valid (routable) IPv6 care of address, has an address prefix routed to the IPv6 router. The address prefix specifies a forwarding protocol, the IPv4 destination address for the IPv6 router, and a site-level aggregation identifier. An address suffix for the synthetic tag address specifies the IPv4 source address, the UDP source port and UDP destination port. Hence, the synthetic tag address enables the destination IPv6 router to send an IPv6 reply packet back to the source IPv6 mobile node via the IPv4 network.

Method and apparatus for providing ip mobility for mobile networks

Abstract: IP mobility solution for mobile network(s) combines features of IP multicast and mobile IPv6. The mobile network defines a mobile router (106) attached to one or more mobile network hosts (102). Upon movement of this network from a home network to a foreign network, the router obtains a multicast care of address for the attached network hosts, creating a binding between the mobile subnet prefix and the multicast care of address. The router communicates the binding information to a home agent (150). A correspondent node sends packets to a mobile network nodes home address. They are intercepted by the home agent and tunneled to the router via the multicast care of address. The router receives the packet and forwards it to the targeted mobile network node. Optionally, the router may send a binding update to the correspondent node, therefore, future packets travel the shortest tree, avoiding the overhead of tunneling.

An Enhanced Fast Handover with Low Latency for Mobile IPv6

Abstract: One of the most important challenges in Mobile IPv6 is to provide the service for a mobile node to maintain its connectivity to the Internet when it moves from one domain to another, which is referred to as handover. Here we deal with the fast handover problem, which is to provide rapid handover service for the delay-sensitive and real-time applications. In this paper, we propose an enhanced fast handover scheme for Mobile IPv6. In our scheme, each AR (Access Router) maintains a CoA (Care of Address) table and generates the new CoA for the MN that will move to its domain. At the same time, the binding updates to home agent and correspondent node are to be performed from the time point when the new CoA for MN is known by PAR (Previous AR). Also the localized authentication procedure cooperated with the proposed scheme is provided. For the comparison with the existing fast handover scheme, detailed performance evaluation is performed. From the evaluation results, we can see that the proposed enhanced fast handover scheme can achieve low handover latency and low packet delay.