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학술지 Implementation of Platform for Long-term Evolution Cell Perspective Resource Utilization Analysis
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저자
엄중선, 김이고르, 박승근
발행일
202104
출처
ETRI Journal, v.43 no.2, pp.232-245
ISSN
1225-6463
출판사
한국전자통신연구원 (ETRI)
DOI
https://dx.doi.org/10.4218/etrij.2019-0475
협약과제
19HR1500, 전파자원 선순환을 위한 주파수 분석 기술 개발, 박승근
초록
As wireless communication continues to develop in limited frequency resource environments, it is becoming important to identify the state of spectrum utilization and predict the amount needed in future. It is essential to collect reliable information for data analysis. This paper introduces a platform that enables the gathering of the scheduling information of a long-term evolution (LTE) cellular system without connecting to the network. A typical LTE terminal can confirm its assigned resource information using the configuration parameters delivered from a network. However, our platform receives and captures only the LTE signal over the air and then enables the estimation of the data relevant to scheduling for all terminals within an LTE cell. After extracting the control channel signal without loss from all LTE subframes, it detects valid downlink control information using the proposed algorithm, which is based on the error vector magnitude of depatterned symbols. We verify the reliability of the developed platform by comparing it with real data from mobile phones and service operators. The average difference in resource block utilization is only 0.28%.
키워드
analyzer, downlink control information, implementation, long-term evolution, resource blocks
KSP 제안 키워드
Cellular system, Configuration parameter, Control channel, Data analysis, Long term Evolution(LTE), Real data, Resource Block(RB), Scheduling information, Spectrum utilization, error vector magnitude, mobile phone
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