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Accurate attitude tracking is a vital process in AR/VR applications. To satisfy its stringent requirement, multiple types of sensors, such as IMU and vision sensors, must cooperate, as each type of sensors has its own set of advantages complementing each other. However, fusion of different types of sensors is not a trivial task. We have previously proposed an attitude tracking algorithm using an IMU,...
In the avenue of smart assisted living there is a need for intelligent services that can make human life easier than ever before. To satisfy such a need, Web Objects allow the real world objects to be virtualized using semantic ontology, to empower the information reusability, extensibility, and interoperability; along with facilitating VO orchestration, federation and harmonized collaboration. This...
In a ubiquitous environment, due to continuous change of location of objects, tracking a moving object is a challenging task in intelligent IoT service provisioning. Hence, web-based IoT services can be provided by discovering and allocating only those virtual objects that are directly relevant to current location of the moving object. A semantic ontology is used to virtualize real world objects for...
We build up the global testbed for the mixed augmented based service of smart space on South Korea and Germany. In this paper, we analyze the influence factor on network to support a stable service of smart space. We measure for the fluctuation of network bandwidth, jitter and packet loss as a performance index in global testbed and select the packet loss to be the most important influence factor...
In this paper, we propose the active queue management mechanism (Active-WRED) for guaranteeing the quality of the high priority service class (VoIP or IPTV) in the multi-class traffic service environment. In the congestion situation, this mechanism increases the drop probability of the low priority traffic and reduces the drop probability of the high priority traffic; therefore it can guarantee the...
This paper proposes a new mobility management (MM) scheme, using Label Switched Path (LSP) of Multi Protocol Label Switching (MPLS) for seamless service in IP-based Next Generation Network. The proposed scheme delivers signaling messages by using L2.5 switching method based on MPLS LSP. So, it can overcome problems from existing schemes, such as PMIP or MIP. We analyze each scheme numerically and...
Intelligent service provisioning in the Internet of Things infrastructure can be achieved by discovering and composing most relevant virtual objects and autonomic modification of context information that require learning the system behavior through steady association between the virtual object and the real world object. To meet these challenges, Web-of-Objects enables the objects to be deployed, maintained...
In recent years, physical things are becoming empowered with computation capabilities which enabled conversion of everyday objects into information appliances. Internet of Things (IoT) envisions a world where small intelligent objects around us that, through unique addressing schemes and standard communication protocols, are able to interact with each other and cooperate with their neighbors to reach...
Virtualizing the educational contents and resources as well as conceptual entities would form VOs and CVOs for WoO paltform. which provides dynamicity and intelligence through composition and collaboration for self-directed learning in smart learning environment. Semantic ontology in WoO platform supports dynamic composition and collaboration among objects, VO and CVO, for intelligent learning model...
Digital signage is a Digital Information Display (DID) which expresses traditional advertisements of outdoor billboards by digital. In early digital signage was limited to provide contents consists texts, images and videos, but now it is combined with the network so contents can be installed, operated and replaced from a distance. Furthermore interaction with users and with user's mobile terminals...
The rapid achievement of effective levels of antiepileptic drugs (AEDs) is required in patients with epilepsy who have a higher risk of seizures, and oral loading of AEDs may be an important consideration in these patients. We performed the present study to investigate the efficacy and tolerability of oral loading of oxcarbazepine in patients with recurrent seizures, or after temporary discontinuation...
In this paper, we propose QoE assessment model for video streaming service such as IPTV and VoD using QoS parameters in wired-wireless network. Existing perceptual quality assessment models are unsuitable for experienced quality assessment of a streaming service which passed through the IP-based network because they only take account of the characteristic of used codec and bit rate. However, QoS parameters...
In this paper, we propose a high-speed packet transmission mechanism using source switching label information. In the proposed mechanism, switches within core network can simply switch packets to next port using source switching label information since ingress nodes transmit packets inserting the end-to-end path information in label header. Unlike MPLS (Multiprotocol Label Switching), it is unnecessary...
This paper proposes an improved MM (Mobility Management) scheme for fast handover between WiMAX and WLAN networks. It simplifies re-authentication and IP configuration process and supports low handover latency by using general AAA key, MA ID (Mobility Agent Identifier). For this, the proposed scheme allocates MA ID to a MN during initial connection establishment. During handover, the MN requests access...
We propose a method to support handover between heterogeneous access technologies for multiple interface (MIF) mobile node (MN) in the Proxy Mobile IPv6 (PMIPv6) domain. We analyze the reduction of handover signaling cost in the proposed MAT method.
In this paper, we propose a mechanism to support switching of multimedia services toward one display equipment among others connected to IP sharing device especially in home network. For this, we developed a client agent mounted on display equipment for recognizing of user's information, a switching agent mounted on IP sharing device, which is related to IPtables management in the device, and embedded...
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