| 摘要 |
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". |
