Tsunehiko Chiba

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— Localized mobility protocols are designed to address many of the drawbacks such as additional signaling and over-the-air tunnel overhead associated with global mobility protocols like Mobile IPv4 and Mobile IPv6. Proxy Mobile IPv6 is one such network controlled localized protocol defined in the IETF. Although Proxy Mobile IPv6 can resolve longer binding(More)
Seamless mobility support in a heterogeneous roaming environment poses several challenging issues in the choice of network architecture design and mobility protocol. Several standards organizations are designing next generation wireless network architectures with a suite of new network elements and protocols that provide service continuity for intra-and(More)
In an effort to provide seamless mobility support in IMS/MMD networks, operators need to choose a specific IP-based mobility protocol. However, there are several micro-and macro-mobility protocols available that the operators can choose from. Operators often face the challenge of selecting the most appropriate mobility protocol that can provide the most(More)
— While there have been tremendous efforts to develop the architecture and protocols to support advanced Internet-based services over 3G and 4G networks, IMS is far from being deployed in a wide scale manner. Effort to create an operator controlled signaling infrastructure using IP-based protocols has resulted in a large number of functional components and(More)
In order to provide seamless connectivity to the roaming users several mobility protocols have been developed at different layers. All of these mobility protocols exhibit certain common properties and demonstrate abstract mobility functions. But in order to achieve the desired functions, these implement signaling in different ways. In this paper we analyze(More)