Patent ID: 8693400

Claim:
A mobile communication method, comprising: a step A of releasing, by a first gateway device, a first bearer for a mobile station and transmitting downlink data notification for notifying a downlink data signal addressed to the mobile station, to a mobility management node, the downlink data signal being buffered, if an error indication signal is received from a radio base station in a state in which the first bearer is set between the first gateway device and the radio base station and a second bearer for the mobile station is set between the first gateway device and a second gateway device; a step B of transmitting, by the mobility management node, a paging signal to the mobile station; and a step C of starting, by the mobility management node, a procedure for releasing the second bearer when no response to the paging signal is received from the mobile station in a predetermined period, wherein, in the step C, when it is determined that the second bearer is a bearer through which a service is provided based on time charging, the mobility management node further starts the procedure for releasing the second bearer.