NB-IoT 시스템에서 랜덤 액세스용 프리엠블 검출 방법
조성철, 김형진, 조권도
- 10568144 (2020.02.18)
17HF1500, 셀룰러 기반 산업 자동화 시스템 구축을 위한 5G 성능 한계 극복 저지연, 고신뢰, 초연결 통합 핵심기술 개발,
- A random access preamble detection method of a base station includes removing a cyclic prefix (CP) from a received signal, detecting a plurality of first symbols corresponding to a plurality of first subcarriers included in an uplink available resource from the received signal with the CP removed, measuring reception power of the first symbol corresponding to each of a plurality of second subcarriers allocated to a random access channel among the plurality of first subcarriers, accumulating reception power with respect to each of the plurality of second subcarriers according to a predetermined frequency hopping pattern, and upon completely accumulating reception power according to the frequency hopping pattern, detecting a preamble sequence using each accumulated value of reception power of each of the plurality of second subcarriers.
- KSP 제안 키워드
- Cyclic prefix(CP), Detection Method, Estimation method, NarrowBand Internet of Things(NB-IoT), Preamble Sequence, Preamble detection, Random Access, Random access channel(RACH), Random access preamble, Timing estimation, base station(BS), frequency hopping