公开(公告)号：US20180242160A1

公开(公告)日：2018-08-23

申请号：US15554638

申请日：2016-01-12

Applicant: NEC Corporation

Inventor： Motoki MORITA ,  Daisuke MATSUO ,  Takahiro NOBUKIYO

IPC: H04W16/08 ,  H04W16/28

CPC classification number: H04W16/08 ,  H04W16/28 ,  H04W36/22 ,  H04W84/045

Abstract: The coverage control method includes at least: step S101 of detecting that a load of an own cell is higher than a predetermined threshold (Lth1) when there is another cell whose coverage partially overlaps the own cell; step S103 of selecting an accommodation candidate cell that is a candidate to which a mobile station accommodated in the cell is unloaded, from the another cell based on a load condition related to a communication load that is a coverage control execution target; step S106 of selecting a continuously accommodated mobile station that is a mobile station that continues to be a coverage control target of the own cell, from the mobile station accommodated in the own cell based on radio quality of the selected accommodation candidate cell; and step S107 of controlling a coverage of the own cell by targeting at the selected continuously selected mobile station.

公开(公告)号：US20200018821A1

公开(公告)日：2020-01-16

申请号：US16483475

申请日：2017-02-06

Applicant: NEC Corporation

Inventor： Daisuke MATSUO ,  Shingo YAMANOUCHI ,  Masayuki ARIYOSHI

IPC: G01S7/292 ,  G01S13/42 ,  G01S13/34 ,  G01S7/35 ,  G01S13/58 ,  G01S7/282

Abstract: An object sensing apparatus 1 includes: an emission unit 11 configured to emit an RF transmission signal as an electromagnetic wave for object sensing; a reception unit 21 configured to receive a reflected wave of the RF transmission signal as an RF reception signal, and use the RF transmission signal to generate a demodulated signal based on the RF reception signal; a distance detection unit 22 configured to detect a distance to the object that reflected the RF transmission signal based on the range spectrum calculated based on the demodulated signal; a behavior detection unit 23 configured to detect behavior of the object based on the range spectrum; a fixed object specifying unit 24 configured to specify a fixed object from among detected objects based on the distance and behavior; and a virtual image specifying unit 25 configured to, if there are two or more objects other than the fixed object among the detected objects, calculate a degree of similarity in the change over time in the behavior for each combination of the objects other than the fixed object, and specify a virtual image based on the degree of similarity.

公开(公告)号：US20210041532A1

公开(公告)日：2021-02-11

申请号：US16963971

申请日：2018-01-25

Applicant: NEC Corporation

Inventor： Daisuke MATSUO ,  Akihiko SUGIYAMA ,  Kazumine OGURA ,  Shingo YAMANOUCHI ,  Masayuki ARIYOSHI

IPC: G01S7/41

Abstract: There is provided an object identification apparatus for identifying a stationary object and a moving object. The object identification apparatus includes a phase difference calculator that calculates phase difference information between a transmission signal and a reception signal obtained by reflecting, by surfaces of the moving object and the stationary object in a space, the transmission signal emitted to the space and receiving the reflected transmission signal, a distance calculator that calculates distance information using the phase difference information, a distance information separator that separates the distance information into moving object distance information as distance information about the moving object and stationary object distance information as distance information about the stationary object, and an identifier that identifies the stationary object and the moving object based on the stationary object distance information and the moving object distance information.

公开(公告)号：US20200011984A1

公开(公告)日：2020-01-09

申请号：US16483469

申请日：2017-02-06

Applicant: NEC Corporation

Inventor： Daisuke MATSUO ,  Shingo YAMANOUCHI ,  Masayuki ARIYOSHI

IPC: G01S13/34 ,  G01S13/60 ,  G01S13/536 ,  B66B1/34 ,  H04L27/26

Abstract: An object sensing apparatus 1 includes: an emission unit 11 configured to emit an RF transmission signal in each period; a reception unit 21 configured to receive a reflected wave of the RF transmission signal as an RF reception signal; an IF signal generation unit 22 configured to generate an IF signal by mixing the RF transmission signal and the RF reception signal; a one-dimensional spectrum generation unit 23 configured to generate a one-dimensional spectrum with respect to distance obtained using the object sensing apparatus as a reference, based on the IF signal, and use the generated one-dimensional spectrum to generate a one-dimensional spectrum with fixed object reflection removed, from which a signal component caused by a reflected wave from a fixed object present in an emission range has been removed; a position detection unit 24 configured to detect a position of an object other than the fixed object based on the amplitude of the one-dimensional spectrum with fixed object reflection removed; and a displacement detection unit 25 configured to detect displacement of the object other than the fixed object, based on the phase of the one-dimensional spectrum with fixed object reflection removed, which corresponds to the position of the object other than the fixed object.