Jens Staack

Method and system providing a messaging service

Location determination in telecommunication network

Initiation of packet-based services in a public mobile communication system

Provision of location information in a communication system

Presence and session handling information

Controlling sending of messages in a communication system

Determination of the position of a mobile terminal

Method and system for locating a mobile terminal

Method, network device, and terminal device for controlling context activation

Data transmission method and network system