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Lim, WonHo;Jeong, HyoungChan;Ahmad, Ishtiaq;Chang, KyungHi
- Journal of Advanced Navigation Technology
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- v.20 no.6
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- pp.595-603
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- 2016
In the Republic of Korea, the LTE-based public safety (PS-LTE) network is being built for the 700 MHz frequency band. However, the same bands are also assigned to the LTE-based high-speed railway (LTE-R) network. Therefore, it is essential to utilize the co-channel interference management schemes for the coexistence of two LTE networks in order to increase the system throughput and to reduce the user outage probability. In this paper, we focus on the downlink (DL) system for the coexistence of PS-LTE and LTE-R networks by considering non radio access network (RAN) sharing and LTE-R RAN sharing by PS-LTE users (UEs) to analyze the UE throughput. Moreover, we also utilize the cooperative communications schemes, such as coordinated multipoint (CoMP) for the coexistence of PS-LTE and LTE-R networks in order to reduce the UE outage probability. We categorize the coexistence of PS-LTE and LTE-R networks into four different scenarios, and evaluate the performance of each scenario by the important performance indexes, such as UE average throughput and UE outage probability.
https://doi.org/10.12673/jant.2016.20.6.595 인용 PDF KSCI

Shin, Dae-Yewn;Moon, Ok-Ran;Yoon, Mi-Ran;Jung, Young-Dal;Kim, Keun-Joong;Choi, Du-Bok
- Proceedings of the Korean Environmental Health Society Conference
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- 2005.12a
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- pp.49-50
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- 2005
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Hong, Hae-Su;Lee, Sung-Won
- Proceedings of the Korean Information Science Society Conference
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- 2012.06d
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- pp.360-362
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- 2012
현재 안테나 자체는 Active Antenna Array 화 되어있다. 이 방법은 백홀, 기저 대역(baseband)을 통해 광케이블로 연결하여, 대표적인 WARP 와 CCC 가 있다. 안테나에서의 기저 대역을 통해 광케이블로 연결한다. 이 이유는 데이터 용량에 따라 트래픽이 증가 되었기 때문에 대용량의 데이터 전송을 위해 광케이블로 사용한 것이다. 따라서 AAA와 Cloud RAN의 주요 장점들을 제안하고 있는 주요 기업들에 대한 최근 동향을 살피고 그에 따른 주요 이슈를 나타내어 이 논문에서의 향후 연구 방향을 제안한다.