Patent ID: 9060374
Filing Date: 2015-06-16
Classification: H04W

Abstract:
1. A mobile terminal used in a mobile communication network that includes a mobility management node (MMN) serving the mobile terminal, said MMN comprising one of a mobility management entity (MME) and a serving GPRS support node (SGSN), and a serving gateway (S-GW), the mobile terminal comprising: a receiver that receives a paging from the mobile communication network based on an arrival of an incoming call destined for the mobile terminal at the mobile communication network with the serving gateway; and a transmitter that in response to the paging, re-attaches to the mobile communication network, wherein the serving gateway, starts a timer upon restarting of the MMN, maintains specific a S5/S8 bearer related to the mobile terminal for a preset time period prescribed by the timer, deletes all bearers except the maintained bearer bearer before expiration of the timer and deletes the maintained bearer the expiration of the timer.