UMTS QoS는 [1]에 정의되어 있는 바와 같이 계층적 구조를 가지고 있다. 즉, 단-대-단 QoS를 위해서는 UMTS QoS의 보장 뿐만 아니라 여러 계층에서의 QoS가 동시에 보장되어야 한다. 즉. UMTS 단일 입장에서 QoS를 보장하기 위해서는 인터넷 서비스 보장 기법과 UMTS QoS 보장 기법간의 변환 기법이 필수적이라 할 수 있다. 현재 winsock2에서는 QoS 보장을 위한 다양한 API가 새롭게 정의되어 있다. 이러한 API는 이동 단말기에 탑재될 것이므로 이 API에서 정의하는 QoS 파라미터와 UMTS망에서 사용되는 QoS 파라미터와의 변환 기법이 필요하게 된다. 본 논문은 UMTS QoS의 계어 측면에서 요구되는 변환기를 구성하는데 필요한 변환 메커니즘을 제안한다. 본 메커니즘은 외부 망과 독립적으로 구성된 UMTS QoS 모델과 Internet QoS 모델로으 변환을 통하여 단-대-단 QoS를 보장하는데 그 목적이 있다.
KSP Keywords
Internet QoS
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