Abstract: In an embodiment, there is provided a method for optimization of IP traffic between a User Equipment having access to an IP network via an IP Connectivity Access Network, and an IP connection endpoint in said IP network, for an application allowing a choice in said IP connection endpoint, said method comprising at least one step based on a selection of an IP connection endpoint according to end-to-end IP traffic optimization criteria.

Abstract: Method for saving energy in a mobile terminal, this method comprising A first period, called the mobile terminal in-use period (1), for sending control messages with a first transmission frequency; and A second period, called the mobile terminal idle period (2), for sending control messages with a second transmission frequency, The transition from an idle period to an in-use period, or vice versa, is dependent upon the movement of the mobile terminal, and a time-out.

Abstract: In an embodiment, there is provided a method for optimization of IP traffic between a User Equipment having access to an IP network via an IP Connectivity Access Network, and an IP connection endpoint in said IP network, for an application allowing a choice in said IP connection endpoint, said method comprising at least one step based on a selection of an IP connection endpoint according to end-to-end IP traffic optimization criteria.

Abstract: Method for saving energy in a mobile terminal, this method comprising A first period, called the mobile terminal in-use period (1), for sending control messages with a first transmission frequency; and A second period, called the mobile terminal idle period (2), for sending control messages with a second transmission frequency, The transition from an idle period to an in-use period, or vice versa, is dependent upon the movement of the mobile terminal, and a time-out.

Abstract: A method for providing data (DS, DS?, DS?) from a server to a plurality of end-users (R1, R2, R3) via a communication network, comprising the steps of: starting a transmission of the data (DS) to at least a first end-user (R1, R3); while transmitting the data to the first end-user, upon a detection of a request for a transmission of the same data by at least one second end-user (R2), establishing a multicast transmission of the data to the first and the second end-users; requesting missing data (MP) not received with the multicast data at the second end-user from the server.