Traffic optimization for IP connection over an IP connectivity access network and for an application allowing a choice of IP connection endpoint

1. A method for optimization of internet protocol traffic between a user equipment having access to an internet protocol network via an internet protocol connectivity access network, and an internet protocol connection endpoint in said internet protocol network, for an application allowing a choice in said internet protocol connection endpoint, said method comprising at least one step based on a selection of an internet protocol connection endpoint according to end-to-end internet protocol traffic optimization criteria, and further comprising:

upon selection of a new internet protocol connectivity access network traffic path for an already started application, said user equipment requesting from a network topology aware information server information enabling selection of the internet protocol connection endpoint according to said end-to-end internet protocol traffic optimization criteria;

wherein internet protocol connectivity access network corresponds to third generation partnership project evolved packet system, and selection of an internet protocol connectivity access network traffic path corresponds to selection of a third generation partnership project or non-third generation partnership project access for an internet protocol flow belonging to an internet protocol connection.

2. The method according to claim 1 , comprising:

the network topology aware information server providing information enabling said user equipment to select one or several internet protocol connection endpoints according to said end-to-end internet protocol traffic optimization criteria.

3. The method according to claim 1 , comprising:

upon the selection of the new internet protocol connectivity access network traffic path for the already started application, said user equipment selecting the internet protocol connection endpoint according to said end-to-end internet protocol traffic optimization criteria, based on information received from the network topology aware information server.

4. The method according to claim 1 , comprising:

upon starting the application, said user equipment selecting the internet protocol connection endpoint according to the end-to-end internet protocol traffic optimization criteria, based on information provided by the network topology aware information server.

5. The method according to claim 1 , comprising:

upon starting the application, said user equipment configuring itself for a traffic path associated with the internet protocol connection endpoint selected according to said end-to-end internet protocol traffic optimization criteria.

6. The method according to claim 1 , comprising:

upon starting the application, said user equipment requesting to the network topology aware information server information enabling selection of the internet protocol connection endpoint according to said end-to-end internet protocol traffic optimization criteria.

7. The method according to claim 1 , wherein the internet protocol connectivity access network corresponds to the third generation partnership project evolved packet system, and selection of the internet protocol connectivity access network traffic path corresponds to at least one of selection of the third generation partnership project or non-third generation partnership project access and selection of an access point name for the internet protocol connection or the internet protocol flow belonging to the internet protocol connection, according to operator's policies provided by a policy server.

8. The method according to claim 7 , wherein the policy server is an access network discovery and selection function server.

9. The method according to claim 1 , wherein the network topology aware information server is an application layer traffic optimization server.

10. A user equipment for optimization of internet protocol traffic between a user equipment having access to an internet protocol network via an internet protocol connectivity access network, and an internet protocol connection endpoint in said internet protocol network, for an application allowing a choice in said internet protocol connection endpoint, said method comprising at least one step based on a selection of an internet protocol connection endpoint according to end-to-end internet protocol traffic optimization criteria, the user equipment being configured to:

upon selection of the new internet protocol connectivity access network traffic path for an already started application, said user equipment requesting to a network topology aware information server information enabling selection of the internet protocol connection endpoint according to said end-to-end internet protocol traffic optimization criteria;

wherein internet protocol connectivity access network corresponds to 3GPP evolved packet system, and selection of an internet protocol connectivity access network traffic path corresponds to selection of a third generation partnership project or non-third generation partnership project access for an internet protocol flow belonging to an internet protocol connection.

11. The user equipment according to claim 10 , further configured to, upon selection of the new internet protocol connectivity access network traffic path for the already started application, selecting the internet protocol connection endpoint according to said end-to-end internet protocol traffic optimization criteria based on information received from the network topology aware information server.

12. The method according to claim 10 , wherein the internet protocol connectivity access network corresponds to the third generation partnership project evolved packet system, and at least of selection of the internet protocol connectivity access network traffic path corresponds to selection of the third generation partnership project or non-third generation partnership project access and selection of an access point name for the internet protocol connection or the internet protocol flow belonging to the internet protocol connection, according to operator's policies provided by a policy server.

13. The user equipment according to claim 12 , wherein the policy server is an access network discovery and selection function server.

14. The user equipment according to claim 10 , wherein the network topology aware information server is an application layer traffic optimization server.

15. A network topology aware information server configured to perform a method for optimization of internet protocol traffic between a user equipment having access to an internet protocol network via an internet protocol connectivity access network, and an internet protocol connection endpoint in said internet protocol network, for an application allowing a choice in said internet protocol connection endpoint, said method comprising at least one step based on a selection of an internet protocol connection endpoint according to end-to-end internet protocol traffic optimization criteria, and further comprising:

upon selection of a new internet protocol connectivity access network traffic path for an already started application, said User Equipment requesting to a network topology aware information server information enabling selection of the internet protocol connection endpoint according to said end-to-end internet protocol traffic optimization criteria;

wherein internet protocol connectivity access network corresponds to third generation partnership project evolved packet system, and selection of an internet protocol connectivity access network traffic path corresponds to selection of a third generation partnership project or non-third generation partnership project access for an internet protocol flow belonging to an internet protocol connection.

16. The network topology aware information server according to claim 15 , wherein the network topology aware information server is an application layer traffic optimization server.