Patent ID: 9219643
Filing Date: 2015-12-22
Classification: H04L,H04W,Y02D

Abstract:
1. A method, in a Mobility Management entity (MME) node, for partial failure handing when an Idle Mode Signalling Reduction (ISR) is activated, the MME node being comprised in a communications network, the method comprising: the MME receiving, from a Serving Gateway (SGW) node, a notification of a partial failure within the SGW node, the notification comprising an identification of at least one user equipment associated with a set of Packet Domain Network (PDN) connections affected by the partial failure; the MME processing bearers associated with the affected set of PDN connections; and the MME sending to a S4-Serving General Packet Radio Service Support Node (S4-SGSN) a failure notification message indicating that the SGW node has a partial failure, the failure notification message comprising the identification of the at least one user equipment associated with the affected set of PDN connections.