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In Internet of Things (IoT) environment, IoT devices are limited to power supply, CPU capacity, memory, etc. and have a constrained network performance such as bandwidth, wireless channel, throughput, payload, etc., the resources of IoT devices however can be shared by other IoT devices. Specially, in IoT healthcare service, the way of management and interoperability of patient-related and device...
For Web-based applications in Internet of Things (IoT) environment, the IETF CoRE Working Group developed the Constrained Application Protocol (CoAP). A limitation of CoAP is that it does not address a mobility management for CoAP sensor nodes, which may move between different IP domains of a wireless sensor network. In this paper, we propose the CoAP-based Mobility Management Protocol (CoMP), which...
In order to provide the mobile multimedia service cost-effectively, the smartphone user's demand on free access to widely deployed Wireless LAN (WLAN) systems has been greatly increasing. This is because 3G or 4G mobile networks are usually expensive, and slower than WLAN. Unfortunately, although secure WLANs are installed widely, they are usually not shared. In this article, we have designed and...
As the performance of the next-generation broadband wireless networks is dramatically enhanced, various real time multimedia services have been provided to users through a smart mobile platform. Most of previous research attempts to provide multimedia streaming service are not suitable to support QoS-guaranteed multimedia streaming service. In addition, they have scalability problem with regard to...
In this article, we propose a P2P-based mobility management protocol for global seamless handover in heterogeneous wireless networks. Unlike previous mobility management protocols such as IETF MIPv4/6 and its variants, the proposed protocol can support global seamless handover without changing the existing network infrastructure. The idea of the proposed protocol is that the location management function...
Most of the current mobility management protocols such as the mobile IPv4 or mobile IPv6 and its variants standardized by the IETF do not support global seamless handover. This is because they require comprehensive changes in the existing network infrastructure. In this article, we propose a simple mobility management protocol (SMMP) which can support global seamless handover between homogeneous or...
Precise localization of Wi-Fi Access Point (AP) is becoming increasingly important with the rise of diverse location-based services based on smartphone. In this article, we propose a new method for precise Wi-Fi AP localization using GPS information of smartphone. The idea is that the possible area of Wi-Fi AP location, called AP_Area, is first determined by measuring GPS information and the Received...
This letter presents a fast IP mobility management scheme in vehicular networks where multiple wireless network interfaces are used to perform the fast handover without packet loss. In order to do that, the IETF standard HMIPv6 has been extended, where multiple simultaneous tunnels between the HMIPv6 MAP and the mobile gateway are dynamically constructed. The architecture for supporting multiple tunnels...
In this paper, a heuristic adaptive routing algorithm for an energy-efficient configuration management has been suggested which can reduce energy consumption while guaranteeing QoS for the emergency data in wireless body area networks (WBANs). The priority and vicinity of the nodes are taken into account for the selection of reachable parent nodes, when the nodes are disconnected due to the mobile...
In this article, we present QoS-Guaranteed local mobility management with bicasting tunnels for mobile devices with dual interfaces. The IETF standard HMIPv6 has been extended where bi-casting tunnels between an access router and the mobile node in 3G/WiFi network are dynamically constructed using dual interfaces. The detailed signaling procedure for the extension of HMIPv6 has been designed and NS2...
Recently, there appear diverse smart phones with dual wireless interfaces such as Wi-Fi and 3G. In this article, we present a novel IP mobility management scheme in which dual wireless network interfaces are assigned active IPv6 Care-of-Addresses and used simultaneously for achieving fast handover without packet loss. In order to do that, the IETF standard HMIPv6 has been extended such that while...
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