US 9,813,996 B2
Radio communication method, local area base station apparatus, mobile terminal apparatus and radio communication system
Yoshihisa Kishiyama, Tokyo (JP); Anass Benjebbour, Tokyo (JP); and Kazuaki Takeda, Tokyo (JP)
Assigned to NTT DOCOMO, INC., Tokyo (JP)
Appl. No. 14/390,405
Filed by NTT DOCOMO, INC., Tokyo (JP)
PCT Filed Apr. 4, 2013, PCT No. PCT/JP2013/060311
§ 371(c)(1), (2) Date Oct. 3, 2014,
PCT Pub. No. WO2013/151127, PCT Pub. Date Oct. 10, 2013.
Claims priority of application No. 2012-087672 (JP), filed on Apr. 6, 2012.
Prior Publication US 2015/0045085 A1, Feb. 12, 2015
Int. Cl. H04W 52/24 (2009.01); H04W 16/18 (2009.01); H04W 24/02 (2009.01); H04W 52/14 (2009.01); H04W 52/32 (2009.01); H04W 16/32 (2009.01); H04W 48/10 (2009.01); H04W 52/50 (2009.01); H04B 17/318 (2015.01)
CPC H04W 52/242 (2013.01) [H04W 16/18 (2013.01); H04W 24/02 (2013.01); H04B 17/318 (2015.01); H04W 16/32 (2013.01); H04W 48/10 (2013.01); H04W 52/143 (2013.01); H04W 52/146 (2013.01); H04W 52/247 (2013.01); H04W 52/325 (2013.01); H04W 52/50 (2013.01)] 9 Claims
OG exemplary drawing
 
1. A mobile terminal apparatus comprising:
a measurement section configured to measure reception power of a discovery signal that is periodically transmitted in a given cycle to the mobile terminal apparatus from a radio base station that is able to turn downlink transmission on and off; and
a control section configured to control transmission power of an uplink signal to the radio base station based on a path loss that is calculated based on a measured reception power value of the discovery signal,
wherein the measurement section calculates the path loss based on a difference between a transmission power value of the received discovery signal and the measured reception power value of the discovery signal.