user terminal for enhanced security in a wireless communications system, and a system for its use

A method for achieving enhanced communication security in a wireless communications system (200) for voice calls and/or data sessions, in which system (200) encrypted voice and/or data traffic is exchanged between at least a first (100) and a second user terminal via at least a first node (210, 220, 230) in the system, the method being characterized in that it comprises letting said first (100) and second user terminals split outgoing encrypted traffic during one and the same voice conversation and/or one and the same data session, so that a first part of the outgoing encrypted traffic from each of said terminals is sent via said first node, and a second part is sent via a second node in the system.

A wireless communications system (200) for voice calls and/or data sessions, the system comprising at least a first (210, 220, 230) and a second (210, 220, 230) node for sending encrypted voice and data traffic to and receiving encrypted voice and data traffic from user terminals (100) in a geographical area covered by the system, the system in addition also comprising functionalities for:

• Receiving signals from a first user terminal (100) or sending signals to the first user terminal (100) that the terminal should or desires to commence sending and/or receiving traffic in a secure mode, the secure mode being a mode where traffic for one and the same voice call or data session is received from the first user terminal (100) by at least a first and a second node, the traffic being split between said nodes,
• Processing said split traffic before it is sent to a second, receiving user terminal in the system.