Invention Grant
US09551774B2 RFID tag search method, non-transitory storage medium storing RFID tag search program, and RFID tag search device
有权
RFID标签搜索方法，存储RFID标签搜索程序的非暂时性存储介质和RFID标签搜索装置
- Patent Title: RFID tag search method, non-transitory storage medium storing RFID tag search program, and RFID tag search device
- Patent Title (中): RFID标签搜索方法，存储RFID标签搜索程序的非暂时性存储介质和RFID标签搜索装置
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Application No.: US14762995Application Date: 2014-04-08
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Publication No.: US09551774B2Publication Date: 2017-01-24
- Inventor: Masanori Ishida , Shigeru Sekiguchi , Kouki Hayashi , Shin Nakamatsu , Ryuutarou Hosoi
- Applicant: NTT DOCOMO, INC.
- Applicant Address: JP Chiyoda-ku
- Assignee: NTT DOCOMO, INC.
- Current Assignee: NTT DOCOMO, INC.
- Current Assignee Address: JP Chiyoda-ku
- Agency: Oblon, McClelland, Maier & Neustadt, L.L.P.
- Priority: JP2013-090795 20130423
- International Application: PCT/JP2014/060183 WO 20140408
- International Announcement: WO2014/175063 WO 20141030
- Main IPC: H04W24/00
- IPC: H04W24/00 ; G01S1/04 ; H04W72/12 ; H04W4/00 ; G01S5/02 ; G01S5/12 ; H04W8/00 ; H04M1/725
Abstract:
A method to be executed by a user terminal for searching for locations of one or more wireless devices that are located within an area in which the one or more wireless devices can wirelessly communicate with the user terminal, wherein each of the one or more wireless devices periodically transmits a beacon signal. The method includes detecting a number of the one or more wireless devices that are located within the area based on the beacon signals; determining a transmission period for transmitting the beacon signals depending on the number of the one or more wireless devices; and instructing the one or more wireless devices that are located within the area to transmit the beacon signals in accordance with the determined transmission period.
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