EMERGENCY CENTER SELECTION METHOD, DEVICE, AND SYSTEM

摘要

The present application discloses an emergency center selection method, device, and system. The method includes: receiving, by an MME, a request message initiated by UE located in an LTE network for CSFB of an emergency call, and sending, to an eNB, a first notification message that carries an emergency call indication; and sending, to an MSC, a first handover request message that carries information about a cell of a 3G network or information about a cell that is of the LTE network and on which the UE currently camps, so that after the MSC receives the first handover request message, the MSC may select an emergency center according to the information about the cell of the 3G network or the information about the cell of the LTE network in the first handover request message, and further quickly set up a call connection between the UE and the emergency center.

主权项

1. An emergency center selection method, comprising:
receiving, by a mobility management entity MME, a request message initiated by user equipment UE located in a Long Term Evolution LTE network, wherein the request message is used to request circuit switched fallback CSFB for an emergency call; sending, by the MME, a first notification message to an evolved NodeB eNB according to the request message, wherein the first notification message is used to instruct the eNB to hand over the UE from the LTE network to a 3G network for the CSFB, and the first notification message carries an emergency call indication, which is used to indicate to the eNB that the CSFB is triggered by the emergency call; and sending, by the MME, a first handover request message to a mobile switching center MSC, wherein the first handover request message carries the emergency call indication, which is used to instruct the MSC to hand over the UE from the LTE network to a circuit switched CS domain of the 3G network for the emergency call, and the first handover request message further carries information about a cell of the 3G network or information about a cell that is of the LTE network and on which the UE currently camps, the information about the cell of the 3G network or the information about the cell of the LTE network is configure to instruct the mobile switching center MSC to selects an emergency center.