Method and device for identifying non-line-of-sight propagation and base station

Abstract

The embodiment of the invention provides a method and a device for identifying non-line-of-sight propagation and a base station. The method comprises the following steps of: obtaining the channel power spectrum corresponding to each group of signals according to K groups of signals transmitted by MS (Mobile Station) received in a preset period to obtain K groups of channel power spectrum, wherein K is greater than a first threshold which is a positive integer; determining N channel power spectrum subsets according to the K groups of channel power spectrums, wherein N is less than K; obtaining N accumulated channel power spectrums according to N channel power spectrum subsets and obtaining the extreme value position of the N accumulated channel power spectrums; obtaining the first standard deviation of the signal transmission distance between MS and BS (Base Station) according to the N extreme value positions; and identifying whether non-line-of-sight propagation occurs between the MS and BS or not according to the magnitude relation between the first standard deviation and the second standard deviation. The technical scheme ensures that the first standard deviation with higher precision between the MS and BS can be obtained so as to effectively improve the identifying accuracy of the non-line-of-sight propagation environment.

Description

technical field [0001] Embodiments of the present invention relate to the technical field of cellular networks, and in particular to a non-line-of-sight propagation identification method, device, and base station. Background technique [0002] In the cellular network, when the direct path between the mobile station (Mobile Station; hereinafter referred to as MS) and the base station (BaseStation; hereinafter referred to as BS) is blocked by obstacles, the radio wave reaches the receiving end after reflection and diffraction. At this time, the measured The received data, such as time of arrival, time difference, angle of incidence, etc., will not correctly reflect the true distance between the sender and the receiver. This phenomenon is called Non-Line-Of-Sight (NLOS for short) propagation. With the popularization of MS use, people's demand for MS positioning is increasing day by day. In the existing MS positioning technology, identification of the NLOS propagation environme...

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Problems solved by technology

[0005] Embodiments of the present invention provide a non-line-of-sight propagation identification method, device, and base station to solve the defect of inaccurate identification of non-line-of-sight propagation in the prior art and effectively improve the accuracy of NLOS identification

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