Ho-Jin Park

Personal Mobile A/V Control Point for Home-to-Home Media Streaming

Existing home networking protocols such as UPnP are not ready to support media streaming services among home networks. Furthermore, a home router with NAT makes it difficult to provide such home-to-home networking services. Considering these constraints of real home network environments, we propose a personal mobile A/V control point that offers an extended home space so that users can freely control their own home and remote devices on their moving UPnP-enabled networks with zero configuration.

Architecture of home gateway for device collaboration in extended home space

Extended home space refers not only to home appliances but also to logical space, including a wide range of out-home personal devices such as mobile phones, PDAs, laptops, car navigators, and office PCs. Seamless networking and collaboration among these devices is essential to provide users with a ubiquitous home environment in which they can use home services whenever and wherever they want to. In reality, however, there are certain barriers to this, such as the dynamic IP address, NAT, and heterogeneous service protocols. In this paper, we propose a Home Gateway that provides unrestricted collaboration between personal devices in the extended home space by overcoming these barriers with P2P networking technology.

EAFR-based DLNA proxy for high-quality video distribution in extended home space

We propose a DLNA proxy for home-to-home content distribution that enables a source DLNA-compliant device to multicast a high-quality video to target ones in different UPnP-enabled home networks by applying a large-scale media distribution scheme to the DLNA architecture. The proposed EAFR scheme helps the DLNA proxy efficiently distribute overall network traffic load for a massive content delivered to the DLNA devices placed on different home networks by utilizing unused forwarding bandwidth on delivery paths, among them based on a multiple multicast trees approach.

Design and implementation of the home service delivery and management system based on OSGi service platform

Traditionally, the digital home services have been provided separately by each service providers that have closed service delivery infrastructure for delivering home services. Because of this, small companies that do not have the infrastructure to deploy home services have difficulties in participating in the home network market. To solve this problem, we propose the digital home service delivery system that provides open service delivery platform that small business companies need to provide various home services to users. By using the proposed system, the service aggregator using the proposed system can lead competition of the 3rd party service providers in the home network service market, and help it grow rapidly.

A Peer Mutual Authentication Method using PKI on Super Peer based Peer-to-Peer Systems

In this paper, we suggest a strong peer authentication algorithm that authorizes the peer which requests a service usage of the other peer in super peer based P2P network environment. The proposed peer authentication method, at which public key certificate (PKC) and Kerberos authentication mechanism is applied, enables each peer to perform strong mutual authentication in P2P network environment. The peer mutual authentication is performed by getting authentication ticket and verification it by other peer. Also, the lifetime of a ticket can be controlled by the peer providing services according to each service.

Location-aware UPnP AV session manager for smart home

In this paper, we design a location-aware UPnP AV session manager1. This system automatically detects a users movement using RFID technology, and then captures or restores his UPnP A/V session information by invoking service actions defined in the UPnP AV architecture. The designed system is based on RFID-based multi-user access control algorithm to reduce both service transition time from a person in service to another person, and unnecessary processing time, by filtering invalid tags.

A Proposed Platform a Performance Estimation of Digital-Home Service Delivery/Management Systems

Service delivery & management platforms give us how to manage home gateways and the life cycle of services downloaded to home gateways. When service providers register developed service applications to the service platform, the applications go through the operation of service delivery and are downloaded to the framework of home gateways. Upon the installation, the corresponding service application is activated to provide service users with services. This paper proposes the structure and functional models of a service delivery and management platform to work out the closeness found in the service provision and management system of home network when individual companies offer services, while presenting functional implementations and the results of system performance estimation

A Framework for Interoperability of Heterogeneous Devices in Ubiquitous Home

Ubiquitous home refers not only to home but also to logical space, including a wide range of out-home personal devices such as mobile phones, PDAs, laptops, car navigators, and office PCs. There are certain connection barriers among the devices, such as the dynamic IP address, NAT. In a home network, various devices coexist in heterogeneous networks, such as IP, IEEE1394, PLC, Bluetooth, ZigBee, UWB, and IrDA, all of which lack interoperability due to their different physical transmission characteristics and protocols. In ubiquitous home where an unrestricted collaboration of the devices is essential to offer services that meet the users’ requirements, free interoperability among the devices must be guaranteed. This paper proposes a framework for interoperability of the heterogeneous devices in a ubiquitous home based on a virtual overlay network which hides the complicated physical network configurations and heterogeneity of the service protocols. Compared with conventional approaches, the framework offers improvements in terms of its capacity to support network and device types, its reliability.

Developments and Performance Evaluation of Digital-Home Service Delivery a Management Systems

For continuous provision and upgrade of home services, a service delivery & management platform with openness and scalability will cat as the key element. Service delivery & management platforms give us how to manage home gateways and the life cycle of sewices downloaded to home gateways. When service providers register developed service applications to the service platform, the applications will go through the operation of service delivery and be downloaded to the framework of home gateways. Upon the installation, the corresponding service application will be activated to provide service users with services. This paper proposes the structure and functional models of a service delivery and management platform to work out the closeness found in the service provision and management system of home network when individual companies offer services, while presenting functional implementations and the results of system performance evaluation.

Desktop Migration System Based on Dynamic Linking of Application Specific Libraries

For the purpose of realization of the automated desktop migration environment based on dynamic linking of application specific library, we suggest a desktop migration system which supports application registration, global ID generation, application state management, and library management function. This system can save cost and time in generating a task description and developing application specific communication protocol, and also enables legacy applications to move their application states by supporting open delivery platform of application specific library