Telefonaktiebolaget LM Ericsson (publ)
To Increase Security of Dual Connectivity

Abstract:

A method (1400) is performed by a secondary base station (412, 520) in first connection with a wireless device (110) in a dual connectivity. The wireless device has a second connection with a master base station (412, 520). A first security algorithm is used for communication between the secondary base station and the wireless device in the first connection. The method comprises determining to use a second security algorithm for securing communication between the secondary base station and the wireless device. The method further comprises sending a message to the master base station, the message indicating the second security algorithm and causes the master base station to send a message to the wireless device. The message to the wireless device indicates the second security algorithm. The method further comprises using the second security algorithm to secure communication between the secondary base station and the wireless device.