14MR2200, Short Range Wireless Transmission Technology with Robustness to Radio Interferences ,
Choi Jae Ick
Abstract
본고에서는 IEEE 802.11에서 표준화가 진행중인 1 GHz 이하 비면허 주파수에서 동작하는 무선랜(WLAN, Wireless LAN) 표준인 IEEE 802.11ah 무선랜 기술에 대해 알아본다. IEEE 802.11ah 는 스마트 그리드, 센서 네트워크, M2M(machine-to-machine) 통신, 셀룰러 오프로딩, 광역 무선랜 서비스 등을 주된 응용 분야로 고려하고 있으며 이러한 응용들은 기존 무선랜 기술대비 보다 확장된 커버리지, 보다 많은 수의 단말 지원, 저전력 동작 지원 등을 요구한다. IEEE 802.11ah는 이러한 요구 사항을 만족하기 위한 Sub 1 GHz 대역을 사용하는 무선랜 PHY 및 MAC 규격을 개발하였다. 본 고에서는 이러한 IEEE 802.11ah 무선랜의 주요 기술 요소들에 대해 살펴본다.
KSP Keywords
IEEE 802.11ah, Machine to machine(M2M), Wireless Local Area Networks(WLANs)
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