Seok-Cheon Park

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Proxy Mobile IPv6 (PMIPv6) is a network-based mobility management protocol and it does not require mobile node's involving in mobility management. In PMIPv6, the Mobile Access Gateway (MAG) incurs a high signaling cost to update the location of a mobile node to the remote Local Mobility Anchor (LMA) if it moves frequently. It may cause excessive signaling(More)
Proxy Mobile IPv6 (PMIPv6) is a network-based localized mobility support in IP network. The main advantage of using PMIPv6 is the freeing up of the mobile host in doing any mobility related activities and thereby saving its resources. However, the Mobile Access Gateway (MAG) incurs a high signaling cost to update the location of a mobile node to the remote(More)
As the wireless Internet services become widely available, users become able to use various Internet services without restriction in location. In particular, the demands on wireless Internet services are becoming greater, because mobile devices that support high mobility are getting smarter. However, if a user uses various wireless networks, much limitation(More)
It is expected that in the mobile RFID systems, more personal services for individual needs will be offered than in the existing fixed RFID systems. This means that satisfying the requirements for the protection of personal information is essential. Systematic data protection can be achieved through the installation of technological devices such as an(More)
Proxy Mobile IPv6(PMIPv6) is a network-based mobility management protocol to support mobility for IPv6 nodes without host involvement. In PMIPv6, the Mobile Access Gateway(MAG) incurs a high signaling cost to update the location of a mobile node to the remote local mobility anchor(LMA) if the mobile node moves frequently. This increases network overhead on(More)
In this paper, we have studied standard trend of 3GPP and IETF by analyzing related documents. Also, in order to support roaming between WLAN and 3G, messages and procedure of action has been designed. For the verification, messages and procedure of action for designed roaming is modeled by Predicate/Action Net derived from the Petri Net and the safeness of(More)
Proxy Mobile IPv6 (PMIPv6) is a network-based mobility management protocol that does not require mobile node involvement in mobility management. In PMIPv6, the mobile access gateway (MAG) incurs a high signaling cost to update the location of a mobile node to the remote local mobility anchor (LMA) if it moves frequently. It may cause excessive signaling(More)
Proxy Mobile IPv6 (PMIPv6) is a network-based localized mobility support in an IP network. The main advantage of using PMIPv6 is the freeing up of the mobile host when undertaking any mobility-related activity, thereby saving its resources. The mobile access gateway (MAG), however, incurs a high signaling cost for updating the location of a mobile node to(More)
While there are many ongoing research efforts for Denial-of-Service (DoS) attacks in the general Internet environment, there is insufficient research on voice networks. In this paper, we present the design and evaluation of a SIP-TRW algorithm for detection of DDoS attack traffic in VoIP networks. We analyzed existing TRW algorithms for detection of DDoS(More)