Network selection in a WLAN

• US 7,835,317 B2
• Filed: 03/10/2003
• Issued: 11/16/2010
• Est. Priority Date: 10/08/2002
• Status: Active Grant

• Current Assignee: Nokia Technologies Oy (Nokia Corporation)
• Original Assignee: Nokia Corporation
• Inventors: Haverinen, Henry, Ahmavaara, Kalle
• Primary Examiner(s): Appiah; Charles N
• Assistant Examiner(s): DOAN, KIET M
• Application Number:
  US10/383,661
• Publication Number:
  US 20040066756A1
• Time in Patent Office: 2,808 Days
• Field of Search: 370/328, 370/338, 370/331, 370/432.1, 370/329, 370/420, 370/230, 455/439, 455/426, 455/417, 455/414, 455/435.2, 455/432.1, 455/426.1, 455/414.1, 455/425.1, 709/225, 709/229, 707/10, 235/375
• US Class Current: 370/328
• CPC Class Codes: H04W 48/10 using broadcasted information
• CPC Class Codes: H04W 48/18 Selecting a network or a communication service
• CPC Class Codes: H04W 88/06 adapted for operation in multiple networks or having at least two operational modes, e.g. multi-mode terminals
• CPC Class Codes: H04W 88/08 Access point devices

Abstract

A method for user equipment (UE) resident in a wireless access network (WLAN) to obtain access to at least one other network is disclosed. The method includes storing the identification (SSID) of the at least one other network (visited PLMNs 1-3 and home PLMNs 4 and 5) in the user equipment; transmitting from the user equipment a request for connection to one of the at least one other network, which includes an identification of at least one of the at least one other network, to the wireless access network; and in response to the wireless access network receiving the identification, the user equipment is connected to the identified at least one other network through the wireless access network.

Claims

1. A method, comprising:

receiving, at a user equipment from a wireless local area network access point of a wireless local area network, a service set identifier including an identification of at least one other network comprising a public land mobile network;

storing in the user equipment resident in the wireless local area network the identification of the at least one other network;

transmitting, from the user equipment to the wireless local area network access point of the wireless local area network, a request to connect to the at least one other network, the request including the identification of the at least one other network comprising the public land mobile network, wherein the identification comprising;

the service set identifier including the identification of the at least one other network comprising the public land mobile network

a country code where the public land mobile network is located,

and

a field identifying the public land mobile network to which the request for connection is to be routed; and

connecting, in response to the transmitted request, the user equipment to the identified other network through the wireless local area network access point of the wireless local area network.

2. A method in accordance with claim 1, wherein the identification is transmitted from the wireless local area network access point to the user equipment prior to storage therein.

3. A method in accordance with claim 1, wherein the user equipment solicits the identification prior to a request for connection to the other network.

4. A method in accordance with claim 3, wherein

the solicitation includes a wild card as a part of the identification of the other network.

5. A method in accordance with claim 1, wherein the identified other network is a home network.

6. A method in accordance with claim 1, wherein the identified other network is a roaming network.

7. A method, comprising:

storing in a user equipment resident in a wireless access network an identification of at least one other network;

transmitting from the user equipment a request for connection to one of the at least one other network, which includes an identification of at least one of the at least one other network, to the wireless access network; and

in response to the wireless access network receiving the identification, connecting the user equipment to the identified at least one other network through the wireless access network, wherein

the identification of the at least one other network is contained in a service set identifier in accordance with IEEE 802.11 which identifies the at least one other network as a public land mobile network, and

the service set identifier includes fields comprising a field identifying a network type which identifies the network type as a public land mobile network, a field identifying a country code where the at least one public land mobile network is located, and a field identifying at least one public land mobile network to which the request for connection is to be routed.

8. A method in accordance with claim 7, wherein

the service set identifier includes fields comprising a field which defines a network type of the at least one other network and a field which identifies the at least one other network.

9. A method, comprising:

obtaining access by a user equipment to at least one other network via an access network, the at least one other network being accessible via the access network;

providing the access network with at least one access network identification associated with the at least one other network, the at least one access network identification comprises a service set identifier in accordance with IEEE 802.11; and

deriving by the user equipment an identification of the at least one other network from the at least one access network identification, wherein said providing further comprises providing at least one of,

an identification which identifies the at least one other network as a public land mobile network,

a country code where the at least one public land mobile network is located, and

a field identifying at least one public land mobile network to which the request for connection is to be routed.

10. A method in accordance with claim 9, wherein the user equipment utilizes at least one access network identification when establishing a connection to the at least one other network.

11. A method in accordance with claim 10, wherein the access network routes the connection of the user equipment to at least one other network associated with the at least one access network identification.

12. A method in accordance with claim 11, wherein at least one access network identification is transmitted from the access network to the user equipment prior to the connection of the user equipment to the access network.

13. A method in accordance with claim 12, wherein the user equipment acquires at least one access network identification utilized by the access network prior to the connection of the user equipment to the access network.

14. A method in accordance with claim 13, wherein

the access network identification contains at least one field.

15. A method in accordance with claim 10, wherein

the at least one other network is a roaming public land mobile network connected to a home public land mobile network.

16. A method in accordance with claim 9, wherein

the at least one other network is a public land mobile network.

17. A method in accordance with claim 9, wherein

the access network is a wireless local area network.

18. A method in accordance with claim 9, wherein

the access network identification is mapped to a public land mobile network identifier of the at least one other network.

19. An apparatus, comprising:

a transmitter configured to transmit a service set identifier in a wireless local area network, the service set identifier configured in accordance with IEEE 802.11 comprising

an indication of a backbone network type,

a version number of a service set identifier type, and

an identification of a backbone network, wherein the service set identifier further comprises at least one of,

an identification which identifies the at least one other network as the public land mobile network,

a country code where the at least one public land mobile network is located, and

a field identifying the at least one public land mobile network to which the request for connection is to be routed.

20. The apparatus in accordance with claim 19, wherein when the backbone network is a public land mobile network,

the identification of the backbone network includes a country code corresponding to the country in which the backbone network is located and

a network code identifying the backbone network.

21. The apparatus in accordance with claim 19, wherein

the access network is a wireless local area network.

22. An apparatus, comprising:

a transmitter configured to transmit a service set identifier in an access network, said service set identifier comprising

an embedded identification of a backbone network for connection to the access network, and wherein the service set identifier further comprises at least one field which represents at least one of,

an identification which identifies the at least one other network as a public land mobile network, wherein the service set identifier is configured in accordance with IEEE 802.11 and includes the identification of the at least one other network,

a country code where the at least one public land mobile network is located,

and

a field identifying at least one public land mobile network to which the request for connection is to be routed.

23. The apparatus in accordance with claim 22, wherein

the service set identifier conforms to a predefined structure.

24. The apparatus in accordance with claim 22, wherein

in a case when the backbone network is a public land mobile network, the identification of the backbone network comprises a country code corresponding to the country in which the backbone network is located and a network code identifying the backbone network.

25. The apparatus in accordance with claim 22, wherein

the access network is a wireless local area network.

26. A system, comprising:

a wireless access network;

at least one other network accessible via the wireless access network; and

user equipment resident in the wireless access network, wherein

the identification of the at least one other network is stored in the user equipment, a request for connection to one of the at least one other network, which includes an identification of at least one of the at least one other network, is transmitted from the user equipment to the wireless access network and in response to the wireless access network receiving the identification, the user equipment is connected to the identified at least one other network through the wireless access network, wherein said transmission to said wireless access network further comprises at least one of,

an identification which identifies the at least one other network as a public land mobile network, the identification of the at least one other network is contained in a service set identifier in accordance with IEEE 802.11 identifying the at least one other network as a public land mobile network,

a country code where the at least one public land mobile network is located, and

a field identifying at least one public land mobile network to which the request for connection is to be routed.

27. A system in accordance with claim 26, wherein

the identification of the at least one other network is transmitted from the wireless access network to the user equipment prior to storage therein.

28. A system in accordance with claim 26, wherein

the user equipment solicits an identification of the at least one network from the wireless access network prior to a request for connection to one of the at least one other network.

29. A system in accordance with claim 26, wherein the at least one other network is a home network.

30. A system in accordance with claim 26, wherein the at least one other network is a roaming network.

31. A system, comprising:

a wireless access network;

at least one other network accessible via the wireless access network; and

user equipment resident in the wireless access network, wherein

the identification of the at least one other network is stored in the user equipment, a request for connection to one of the at least one other network, which includes an identification of at least one of the at least one other network, is transmitted from the user equipment to the wireless access network and in response to the wireless access network receiving the identification, the user equipment is connected to the identified at least one other network through the wireless access network, the identification of the at least one other network is contained in a service set identifier in accordance with IEEE 802.11 identifying the at least one other network as a public land mobile network,

the at least one other network is a roaming network, and

the service set identifier includes fields comprising a field identifying a network type which identifies the network type as a public land mobile network, a field identifying a country code where the at least one public land mobile network is located, and a field identifying at least one public land mobile network to which the request for connection is to be routed.

32. A system in accordance with claim 31, wherein

the service set identifier includes fields comprising a field which defines a network type of the at least one other network and a field which identifies the at least one other network.

33. A system, comprising:

a wireless access network;

at least one other network accessible via the wireless access network; and

user equipment, wherein

the access network is provided with at least one access network identification associated with the at least one other network and the user equipment derives an identification of the at least one other network from the at least one access network identification, the access network identification is contained in a service set identifier in accordance IEEE 802.11, wherein the wireless access network is further provided with at least one of,

an identification which identifies the at least one other network as a public land mobile network,

a country code where the at least one public land mobile network is located,

and

a field identifying at least one public land mobile network to which the request for connection is to be routed.

34. A system in accordance with claim 33, wherein

the user equipment utilizes at least one access network identification when establishing a connection to the at least one other network.

35. A system in accordance with claim 34, wherein

the access network routes the connection of the user equipment to at least one other network associated with the at least one access network identification.

36. A system in accordance with claim 35, wherein

at least one access network identification is transmitted from the access network to the user equipment prior to the connection of the user equipment to the access network.

37. A system in accordance with claim 36, wherein

the access network identification contains at least one field.

38. A system in accordance with claim 34, wherein

the at least one other network is a roaming public land mobile network connected to a home public land mobile network.

39. A system in accordance with claim 33, wherein

the at least one other network is a public land mobile network.

40. A system in accordance with claim 33, wherein

the access network is a wireless local area network.

41. A system in accordance with claim 33, wherein

the access network identification is mapped to a public land mobile network identifier of the at least one other network.

42. A method, comprising:

transmitting from a user equipment resident in a wireless access network to said wireless access network a communication regarding at least one of at least one other network to which the user equipment desires to obtain access, which includes an identification of the at least one of the at least one other network, the identification of the at least one of the at least one other network originating in a communication from the at least one of the at least one other network which identification has been received from the user equipment, the identification of the at least one other network is contained in a service set identifier in accordance with IEEE 802.11 identifying the at least one other network as a public land mobile network, wherein said transmitting further comprises transmitting to the access network at least one of,

an identification which identifies the at least one other network as a public land mobile network,

a country code where the at least one public land mobile network is located,

and

a field identifying at least one public land mobile network to which the request for connection is to be routed, and

in response to the wireless access network receiving the identification, the user equipment is connected to the identified at least one other network through the wireless access network.

43. A method in accordance with claim 42, wherein

the identification of the at least one other network is transmitted from the wireless access network to the user equipment and is stored therein.

44. A method in accordance with claim 42, wherein

the user equipment solicits an identification of the at least one network from the wireless access network prior to a request for connection to one of the at least one other network.

45. A method in accordance with claim 42, wherein

the at least one other network is a home network.

46. A method in accordance with claim 42, wherein

the at least one other network is a roaming network.

47. A method, comprising:

transmitting from a user equipment resident in a wireless access network to said wireless access network a communication regarding at least one of at least one other network to which the user equipment desires to obtain access, which includes an identification of the at least one of the at least one other network, the identification of the at least one of the at least one other network originating in a communication from the at least one of the at least one other network which identification has been received from the user equipment; and

in response to the wireless access network receiving the identification, the user equipment is connected to the identified at least one other network through the wireless access network, wherein

the identification of the at least one other network is contained in a service set identifier in accordance with IEEE 802.11 which identifies the at least one other network as a public land mobile network, and

the service set identifier includes fields comprising a field identifying a network type which identifies the network type as a public land mobile network, a field identifying a country code where the at least one public land mobile network is located and a field identifying at least one public land mobile network to which the request for connection is to be routed.

48. A method in accordance with claim 47, wherein

the service set identifier includes fields comprising a field which defines a network type of the at least one other network and a field which identifies the at least one other network.

49. A system, comprising:

a wireless access network;

at least one other network accessible via the wireless access network; and

a user equipment storing an identification of the at least one other network, wherein

a request for connection to one of the at least one other network, which includes an identification of at least one of the at least one other network, is transmitted from the user equipment to the wireless access network and, in response to the wireless access network receiving the identification, the user equipment is operatively connected to the identified at least one other network through the wireless access network, wherein the user equipment further transmits to the wireless access network at least one of,

an identification which identifies the at least one other network as a public land mobile network, the identification of the at least one network is contained in a service set identifier in accordance with IEEE 802.11 identifying the at least one other network as being a network type other than a public land mobile network,

a country code where the at least one public land mobile network is located,

and

a field identifying at least one public land mobile network to which the request for connection is to be routed.

50. A system in accordance with claim 49, wherein

the identification of the at least one other network is transmitted from the wireless access network to the user equipment.

51. A system in accordance with claim 49, wherein

the user equipment solicits an identification of the at least one network from the wireless access network prior to a request for connection to one of the at least one other network.

52. A system in accordance with claim 49, wherein

the at least one other network is a home network.

53. A system in accordance with claim 49, wherein

the at least one other network is a roaming network.

54. A system, comprising:

a wireless access network;

at least one other network accessible via the wireless access network; and

a user equipment storing an identification of the at least one other network,

wherein

a request for connection to one of the at least one other network, which includes an identification of at least one of the at least one other network, is transmitted from the user equipment to the wireless access network and, in response to the wireless access network receiving the identification, the identification of the at least one network is contained in a service set identifier in accordance with IEEE 802.11 identifying the at least one other network as being a network type other than a public land mobile network, the user equipment is operatively connected to the identified at least one other network through the wireless access network,

the at least one other network is a roaming network, and

the service set identifier includes fields comprising a field identifying a network type which identifies the network type as a public land mobile network, a field identifying a country code where the at least one public land mobile network is located and a field identifying at least one public land mobile network to which the request for connection is to be routed.

55. A system in accordance with claim 54, wherein

the service set identifier includes fields comprising a field which defines a network type of the at least one other network and a field which identifies the at least one other network.