• Proceedings of the IEEK Conference
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• 1998.10a
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• pp.47-50
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• 1998

In recent years, it is required that computing support mobile user with computer. The advantage of mobile computing is that users may access all their applications from any location, whether they are in another building or a different state. So, Internet combines with mobile computing technology to make new communication environment for supporting mobility. The research for solving the problem of mobility is actively in progress. This paper describes the implementation of tunneling method for flexible bypass between specific region. Tunneling method provide mobile service to mobile hosts. IP datagram's address tranform method is IP-within-IP encapsulation by which an IP datagram may be encapsulated within an IP datagram. The developed IP-within-IP protocol can provide not only enhanced performance because it is implemented in kernel mode, but also convenience of usage to the application developers because it gives user interface as a dynamic link library. Verification of IP packet tunneling was text file transfer program.

• Proceedings of the IEEK Conference
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• 2008.06a
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• pp.369-370
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• 2008

The DMB standards allow to transmit IP data on IP Tunneling. It is able to DMB data localcasting services using technologies as assigning IP address, encapsulating IP packets, guiding IP data service and, exchanging IP packet at the local area. As the result of that, we can have good experiences as rich and localized multimedia on the DMB networks.

• Proceedings of the Korean Institute of Communication Sciences Conference
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• 2004.11a
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• pp.204-204
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• 2004

• The Journal of Korean Institute of Communications and Information Sciences
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• v.26 no.12C
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• pp.208-217
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• 2001

In mobile Internet environment, providing multicast requires much more complex mechanism comparing with the unicast Mobile IP routing protocol. This is because multicast datagrams are sent to a group address that do not belong to a specific network. The IETF Mobile IP suggested two approaches for mobile multicasting, namely remote subscription and hi-directional tunneling. In remote subscription, a mobile node may join a group via a local multicast router on the visited subnet. Therefore remote subscription may cause much datagram loss while reconstructing the delivery tee. In bi-directional tunneling, a mobile node may join a group via a hi-directional tunnel to its home agent. Bi-directional tunneling may suffer from inefficient routing. In this paper, we proposed a new mobile multicasting protocol, Mobile If Multicast using Local Broadcast(MIMLB) which can receive multicast datagrams as fast as possible and optimize routing path for multicast delivery. The MIMLB protocol uses hi-directional tunneling to receive multicast datagrams. And the MIMLB protocol can resolve datagram duplicated problem and optimize routing path by using local broadcast. Simulation results show that MIMLB reduces delivery path length and optimizes multicast routing path when a mobile nod? moves into a foreign network.

• Journal of the Korea Institute of Information and Communication Engineering
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• v.10 no.6
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• pp.1038-1044
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• 2006

Tunneling technique does a role to network authentication or the preservation support of date at high-speed network In order to this, IPsec, SOCKS V5 or GRE tunneling protocol have been using. This paper embodies the offer base of communication service by changing routing route to special IP band for connection interception of harmful service md according to user's needs, by changing routing route to special service at high-speed network. So we measure and analysis action principle of GRE with GRE protocol, the result apply to a service of connection control and authentication base.

• Proceedings of the Korea Contents Association Conference
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• 2010.05a
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• pp.402-404
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• 2010

IP-USN은 인터넷 프로토콜-유비쿼터스 센서 네트워크(Internet Protocol-Ubiquitous Sensor Network)의 약어로 기존의 IP 인프라를 기반으로 USN에 광범위한 확장성을 제공하고 센서 노드, 게이트웨이 및 싱크 노드의 이동성을 보장하는 USN서비스이다. IP-USN 기술로 현재 IPv6를 바탕으로 6LoWPAN 이라는 표준화 기술이 나왔지만 현재 TCP/IP 망에서는 대부분 IPv4를 사용하기 때문에 바로 운용하기에는 어려운 실정이며 IPv6 는 USN 환경에서 사용하기에는 많은 노드 자원을 사용한다. 따라서 본 논문에서는 현재 TCP/IP 의 IPv4의 망에서 사용가능하며 USN 자체 프로토콜을 사용하는 IP-USN망을 구축하여 End-to-End 통신을 구현하는 방법을 제안한다.

• Proceedings of the Korea Information Processing Society Conference
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• 2001.04b
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• pp.681-684
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• 2001

본 논문에서는 기존의 IP 망에서 호스트의 이동성을 지원하기 위한 Mobile IP 개념을 ATM 망에 적용할 경우, Mobile IP 망에서 HA(Home Agent)와 FA(Foreign Agent) 사이에 존재하는 Mobile-IP 터널링(tunneling) 구간을 기존의 LAN 기반의 IP 터널링 구간과 ATM 망에서의 단거리 터널링(short-cut tunneling) 구간으로 구분하여 관리하는 방안을 제안하였다. 특히 ATM 망에서의 short-cut 터널링을 구성하기 위하여 기존의 NHRP 프로토콜을 이용함으로써 대량의 데이터 전송 시 종단간 전송 지연을 줄일 수 있는 장점이 있다. 본 논문에서는 송신노드, 이동노드, HA 및 FA 가 이질적인 두 망에 존재하는 경우 적절한 Mobile-IP 터널링 구간을 이룰 수 있음을 보인다.

• Journal of the Korea Institute of Information Security & Cryptology
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• v.17 no.2
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• pp.61-72
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• 2007

With the increasing growth of Internet and wireless IP networks, Multimedia systems need to be envisaged as information resources where users can access anywhere and anytime. However, efficient services in these multimedia systems are open and challenging research problem due to user mobility, limited resources in wireless devices and expensive radio bandwidth. To implement multimedia services over heterogeneous network, the IP header compression scheme can be used for saving bandwidth. In this paper, we present an efficient solution for header compression, which is modified form of ECRTP. It shows an architectural framework adopting modified ECRTP when IP tunneling network using GRE over IPSec is implemented. We have conducted simulations in order to analyze the effects of different header compression techniques while delivering real-time services to the wireless access network through secured IP Network. The impacts on performance have been investigated through a series of experiments.

• The Journal of The Korea Institute of Intelligent Transport Systems
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• v.7 no.4
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• pp.130-135
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• 2008

Broadcasting services using Internet and Internet protocol have been developed actively. In this paper, push service technologies based on tunneling protocol and for the case of base stations using private IP addresses are proposed. This could be very proper to the broadcasting services for location & traffic information and disaster relief.

• 한국정보통신설비학회:학술대회논문집
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• 2005.08a
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• pp.313-317
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• 2005

The network ingress filtering is a simple and efficient method for preventing IP source spoofing of fixed nodes. Since mobile hosts cannot communicate with its correspondent nodes if the network ingress filtering is configured in mobile IPv4 network, reverse tunneling was considered as a method for avoiding network ingress filtering. But, unfortunately this method does not solve IP source spoofing of mobile nodes. In this paper, we propose a simple and efficient method for preventing IP source spoofing of mobile nodes assuming that only the mobile hosts connected to foreign agents and the network that foreign agent manages is small.