Patent ID: 7840009
Filing Date: 2010-11-23
Classification: H04L,H04W

Abstract:
1. A method in a communication system, the method comprising the steps of: generating, by a first infrastructure system device other than a mobile station, key material comprising at least one air interface key used for encrypting air interface traffic between a base station and a mobile station, wherein the at least one air interface key comprises at least one of a group cipher key or a static cipher key; forwarding the key material from the first infrastructure system device to a second infrastructure system device other than a mobile station; determining whether or not a mobile station, for which the key material is directed, is active on the system, and; upon determining that the mobile station is active, forwarding the key material which includes the at least one air interface key to a base station where the mobile station is active; and forwarding, by the base station, the key material which includes the at least one air interface key to the mobile station.