%0 Journal Article
%A HUANG Xiao-ge
%A LEI Zhen-zhu
%A SHEN Bin
%A XU Lang
%T Small Cells Discovery Based on Fingerprint Database and Synchronization Reference Signals Flexible Transmission
%D 2018
%R 10.13190/j.jbupt.2017-146
%J Journal of Beijing University of Posts and Telecommunications
%P 38-43
%V 41
%N 2
%X Densely deployed small cells suffer from the problem of severe co-channel interference among the neighbouring cells and user equipments (UEs) in the network are confronted with a challenge of intensive energy consumption in inter-frequency scanning (IFS). In order to deal with the problems, a time of arrival (TOA) fingerprint database based small cell discovery strategy was proposed, where the synchronization reference signals (primary synchronization signal/secondary synchronization signal, PSS/SSS) of small cells are transmitted in a flexible scheme. The proposed method achieves the purpose of energy saving for UE by tremendously reducing the number of invalid inter-frequency detection. Meanwhile, it is capable of alleviating the co-channel interference of synchronization signals among small cells through flexible control of PSS/SSS transmission. Simulation shows that the proposed method can effectively improve the probability of detecting small cells and the energy efficiency of UEs in the network.
%U https://journal.bupt.edu.cn/EN/10.13190/j.jbupt.2017-146