Patent ID: 9301134
Filing Date: 2016-03-29
CPC Classification: H04L,H04W

Claim Text:
1. A method, in an anchor base station, for security key generation for secure communications between a wireless terminal and an assisting base station, wherein the wireless terminal is or is about to be dually connected to the anchor base station and the assisting base station, wherein a primary security key is known to the anchor base station and the wireless terminal, the method comprising: generating an assisting security key for the assisting base station, based, at least in part, on the primary security key; sending, to the assisting base station, the generated assisting security key, for use by the assisting base station in generating one or more additional assisting security keys for encrypting data traffic sent to the wireless terminal by the assisting base station while the wireless terminal is dually connected to the anchor base station and the assisting base station.