BASE STATION, MOBILE STATION AND COMMUNICATION METHOD

WIPO Patent Application WO/2018/134995

A1

A base station (1) that communicates with a mobile station (5) intermittently performing a reception operation during periodic reception time periods is characterized by comprising: an allocation unit (107) that allocates a preamble to the mobile station (5); a start request signal generation unit (111) that generates a start request signal including the preamble allocated to the mobile station (5) and requesting a start of synchronization processing between the mobile station and the base station; and a beam control unit (105) which, during a reception time period, causes the start request signal to be transmitted in a plurality of directions while changing the direction of a directive beam (2) for transmitting the start request signal, and which determines, on the basis of the direction of the directive beam at the time of reception of the preamble transmitted by the mobile station (5) having received the start request signal, the direction of the directive beam when communicating with the mobile station (5).

KUSANO MASAAKI (JP)
FUKUI NORIYUKI (JP)
TAKE KEIJIRO (JP)

PCT/JP2017/002104

July 26, 2018

January 23, 2017

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MITSUBISHI ELECTRIC CORP (JP)

H04W16/28; H01Q3/26; H04B7/04; H04B7/10; H04W52/02; H04W56/00

WO2014115474A1

2014-07-31

CMCC: "Beam Sweeping using Multi-width Beams", 3GPP TSG-RAN WG1#86B RL-1609308, 30 September 2016 (2016-09-30), XP051159416
GUANGDONG OPPO MOBILE TELECOM: "Disussion on multi-beam based initial access for NR", 3GPP TSG-RAN WG1#87 RL-1611701, 4 November 2016 (2016-11-04), XP051189137, Retrieved from the Internet

TAKAMURA, Jun (JP)

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