Seok-Cheon Park

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Thanks to the development of wireless data service networks, many users are using wireless data. Also rapid growth of the wireless data usage has resulted in the increase in the quality of wireless data services. But the existing research on the service quality control has mainly focused on wired services, and therefore, the quality control technology in(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)
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)
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)
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