Patent ID: 9179282
Filing Date: 2015-11-03
Classification: H04L,H04W,Y02D

Abstract:
1. A method for enabling reception of secondary notification of an Earthquake and Tsunami Warning System (ETWS) message when a communication device is in connected mode, the method comprising: determining whether the communication device supports a “Release connection to receive CBS” message; sending a Signaling Connection Release Indication (SCRI) message with a cause to a network; receiving a Radio Resource Control (RRC) connection release message from the network; sending an RRC connection release complete message to the network; and switching to idle mode from the connected mode for receiving the secondary notification from the network, wherein the cause comprises the “Release connection to receive CBS” message to indicate to the network to move the communication device to the idle mode when the “Release connection to receive CBS” message is supported and an “other cause” message to indicate to the network to move the communication device to the idle mode when the “Release connection to receive CBS” message is not supported.