Patent ID: 8897750
Filing Date: 2014-11-25
Classification: H04L,H04W

Abstract:
1. A method, in a wireless communications device, of implementing a cell update procedure during a security mode configuration procedure, the method comprising: receiving a new security mode configuration from a radio access network that is to replace an original security mode configuration as part of said security mode configuration procedure; detecting, prior to completion of said security mode configuration procedure, that a cell update message is to be sent to the radio access network; transmitting a first cell update message to the radio access network in accordance with the original security mode configuration; transmitting a second cell update message to the radio access network in accordance with the new security mode configuration; receiving a cell update confirm message from the radio access network, the cell update confirm message sent by the radio access network in accordance with a network determined security mode configuration; ascertaining if the network determined security mode configuration is either the original security mode configuration or the new security mode configuration; and completing the cell update procedure in accordance with the ascertained security mode configuration.