Patent ID: 9270706
Filing Date: 2016-02-23
CPC Classification: H04L,H04W

Claim Text:
1. A method of managing security reconfiguration and cell update procedures in a user equipment in a cellular communication system, the method comprising: receiving a security reconfiguration request from a node of the cellular communication system at the user equipment, wherein the security reconfiguration request is to request a security reconfiguration for the user equipment; initiating and confirming a security reconfiguration procedure responsive to receiving the security reconfiguration request from the node; after receiving the security reconfiguration request and after initiating and confirming the security reconfiguration procedure, detecting a cell update trigger event; aborting the security reconfiguration procedure in said user equipment in response to detecting the cell update trigger event without previously receiving a security mode complete acknowledge for the security reconfiguration procedure while the security reconfiguration procedure is ongoing; providing a security status indication at the user equipment in response to aborting the security reconfiguration procedure; and jointly transmitting a cell update message and the security status indication from the user equipment to the node of the cellular communication system wherein the security status indication informs about the security reconfiguration procedure being aborted in the user equipment.