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This paper presents an analytical model of proportional bandwidth adjustment (PBA) in a two-tier hierarchical NEMO system, composed of an access router (AR), mobile routers (MRs), and visiting mobile nodes (MNs). Depending on the location, an MN may use direct link to AR (Tier-0) or indirect link to AR via MR (Tier-1). To increase system utilization, sessions generated by high-speed MNs in one tier...
In PMIPv6, We propose a new Route Optimization (RO) scheme with roaming among the inter-domains. Previous works are used direct packet forwarding methods among the Mobile Access Gateways (MAGs) because the MAG manages the signaling for the mobile nodes (MNs) to support the mobility. However, previous works cause a lot of problems in security, packet delivery latency, and increasing the control messages...
As a mobile node switches from one subnet to another, Mobile IPv6 requires that it authenticate the new care of address of the new subnet with the corresponding node. The authentication process, called return routability (RR) test, is required in every handoff and can delay the handoff process by a round trip delay between mobile and corresponding nodes. In this paper, two mechanisms are proposed...
Providing a seamless handoff and quality of service (QoS) guarantees is one of the key issues in real-time services. Several IPv6 mobility management schemes have been proposed and can provide uninterrupted service. However, these schemes either have synchronization issues or introduce signaling overhead and high packet loss rate. This paper presents a scheme that reduces the handoff latency based...
HMIPv6(Hierarchical Mobile IPv6) adopts hierarchical architecture to manage the communication between mobile node(MN) and correspondent node(CN) by introducing a mobility anchor point(MAP) so that it may greatly reduce signaling cost during MN movement. However, it also brings about some new problems, one of which is the issue of the route. When a MN moves to some special location, there maybe exists...
Inter-technology roaming is known as one of the interesting challenges toward fourth generation of mobile and wireless communication. While FMIPv6 standardizes the fast handoff solutions in IP layer, the issues of media independency are being investigated through IEEE802.21 project. The integration of these two standards is believed to result in solutions for vertical handoffs between different network...
Wireless mobility seems to be transforming the communication industry, shifting the momentum from Internet access to broadband wireless access. This technology-shifting has been expected to provide a better communication services in return. The ability to transfer communication at extremely high speeds and the ability to stay connected during a fast movement speed should always be applicable for the...
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