Patent ID: 8489116
Filing Date: 2013-07-16
Classification: H04W

Abstract:
1. A mobile communication method, comprising: a step of transmitting, by a positioning calculation node, a positioning signal to a mobile management node; a step of transmitting, by the mobile management node, a transfer signal including the positioning signal and the identification information of the positioning calculation node to a first radio base station; a step of transmitting, by the first radio base station, a transmission failure notification signal including a transmission failure reason, the positioning signal, and the identification information of the positioning calculation node to the mobile management node, when the first radio base station fails to transmit the positioning signal to the mobile station; a step of starting, by the mobile management node, a predetermined timer when the transmission failure reason included in the transmission failure notification signal received by the mobile management node indicates that a handover is in progress; a step of transmitting, by the mobile management node, the identification information of a handover-destination cell and the transmission failure reason and the positioning signal included in the transmission failure notification signal to the positioning calculation node identified by the identification information of the positioning calculation node included in the transmission failure notification signal, when the mobile management node receives a predetermined signal including the identification information of the handover-destination cell from a second radio base station before the expiry of the predetermined timer; and a step of updating, by the mobile management node, the identification information of the handover-destination cell and also storing information indicating the same, without notifying the positioning calculation node of the identification information of the handover-destination cell, when the mobile management node receives a predetermined signal including the identification information of the handover-destination cell from the second radio base station after the expiry of the predetermined timer.