MOBILE COMMUNICATION METHOD AND MOBILE TERMINAL

WIPO Patent Application WO/2014/007172

A1

In a public warning system (PWS), in order for a mobile terminal (UE) to appropriately receive a "Warning message" transmitted in content that successively differs, while preventing an increase in a network load, this mobile communication method has: a step in which a mobile base station (eNB) notifies the mobile terminal (UE) of the "Warning message" and a "Counter cw", and a "Signature" generated on the basis of the "Warning message" and the "Counter cw"; a step in which the mobile terminal (UE) uses a prescribed public key (Pk) to perform a verification process on the "Signature", and compares the "Counter cw" and a "counter cs"; and a step in which the mobile terminal (UE) displays the "Warning message" when the abovementioned verification process has succeeded, and when it has been determined that the "Counter cw" is ahead of the "counter cs".

HAPSARI WURI ANDARMAWANTI (JP)
ZUGENMAIER ALF (DE)

PCT/JP2013/067872

January 09, 2014

June 28, 2013

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NTT DOCOMO INC (JP)

H04L9/32; H04M11/00; H04W4/90; H04W12/10

WO2008065697A1

2008-06-05

JP2010273225A	2010-12-02
JP2004186892A	2004-07-02

"3rd Generation Partnership Project; Technical Specification Group Services and System Aspects; Security aspects of Public Warning System (PWS); (Release 12)", 3GPP TR 33.869, VO.0.2, June 2012 (2012-06-01), Retrieved from the Internet [retrieved on 20130722]
NTT DOCOMO: "PWS Replay Protection", 3GPP TDOCS (WRITTEN CONTRIBUTIONS) AT MEETING, 3 July 2012 (2012-07-03), pages S3 - 68, S3-120749, Retrieved from the Internet [retrieved on 20130722]

MIYOSHI, Hidekazu et al. (JP)
Hidekazu Miyoshi (JP)

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