Mobile station

Japanese Patent JP6071276

B2

To improve the probability of successfully performing transmission processing by a priority terminal and transmission processing of an emergency call even during congestion. A mobile station UE according to the present invention includes: a reception unit 21 configured to acquire an emergency random access channel resource from a radio base station eNB; a RA procedure execution unit 23 configured to perform a RA procedure by using the emergency random access channel resource when the mobile station UE is a priority terminal or when the mobile station UE transmits an emergency call; and an access control unit 22 configured to perform ACB on transmission of a signal regarding the transmission processing. The access control unit 22 is configured not to perform ACB on transmission of "RA Preamble" in a RA procedure for the mobile station UE in the DRX state to transmit an uplink signal.

Hideaki Takahashi
Uri Andaluma Wanti Hapsari
Kenichiro Aoyagi
Sadayuki Ameda

JP2012147252A

February 01, 2017

June 29, 2012

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Ntt docomo, Inc.

H04W4/90; H04W74/08

JP2002016979A
JP2000151494A

WO2013172298A1
WO2013172280A1
WO2008087941A1
WO2007029977A1
WO2010145799A1

Sharp,Latency and Overload Issues for MTC Devices[online],3GPP TSG RAN WG2 #71 R2-104348,インターネット,2010年 8月
NTT DOCOMO, INC.,Problem caused by DRX UE in congested network[online],3GPP TSG-RAN2#78 R2-122543,インターネット,2012年 5月,pp.1-3

Hidekazu Miyoshi
Iwa Saki Kokuni
Shunichi Takahashi
Masakazu Ito
Ichitaro Ito
Hiroyuki Hashimoto

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