멀티모드 휴대 단말의 보급이 본격화되고 다양한 유무선 통신 인프라가 확대됨에 따라 이기종 네트워크 간의 핸드오버 서비스가 무엇보다 요구되는 시점이다. IEEE 802.21 WG에서는 이기종 네트워크간 심리스한 수직 핸드오버 서비스를 목적으로 MIH 표준 기술을 발간하였고, 최근에는 MIH 기술을 방송 네트워크로의 핸드오버를 위해 사용하도록 추가적인 표준화 작업을 진행하고 있다. 본 글은 이기종 네트워크간의 수직 핸드오버 서비스에 효과적으로 사용될 수 있는 IEEE 802.21 MIH 표준의 주요 핵심 기술 및 표준화 현황에 대해 알아보고 통신 네트워크와 방송 네트워크 간의 핸드오버 서비스 제공을 위해 최근 IEEE 802.21 WG 산하에 생성된 IEEE 802.21 TGb의 표준화 진행사항에 대하여 정리해 본다.
KSP Keywords
IEEE 802.21 MIH
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