HyunGon Kim

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Recently wireless 3<sup>rd</sup> generation mobile telecommunication service providers have been showing strong interest in network-based localized mobility management. This could be a prominent way to support IP mobility to mobile nodes, because it requires minimal functionality on the mobile node. However, there is a limited understanding of security(More)
Mobility management protocols play a vital role during mobile node transmission. That's why IETF NETLMM working group has recently presented a new approach, i-e, Proxy Mobile IPv6 (PMIPv6) which is a network-based mobility management protocol. But, PMIPv6 still suffers from the long authentication latency during the handover process. In order to improve the(More)
The terrestrial digital multimedia broadcasting (T-DMB) system provides one-way broadcasting service today and two-way interactive data services through a return channel of mobile telecommunications network are commercialized recently. The possible evolution of the T-DMB will be convergence between it and other services such as RFID, telematics, and so on.(More)
In next generation wireless networks, an application must be capable of rating service information in real-time and prior to initiation of the service it is necessary to check whether the end user's account provides coverage for the requested service. However, to provide prepaid services effectively, credit-control should have minimal latency. In an(More)