Method and apparatus for the discovery of radio access network elements and exchange of capability and data attributes between those elements

• US 7,633,897 B2
• Filed: 02/03/2006
• Issued: 12/15/2009
• Est. Priority Date: 02/03/2006
• Status: Active Grant

• Current Assignee: Qualcomm, Inc.
• Original Assignee: Qualcomm, Inc.
• Inventors: Bender, Paul E., Anand, Rahul, Vietla, Sreekanth, Bica, Vito, Ziv, Noam A.
• Primary Examiner(s): Afshar; Kamran
• Application Number:
  US11/346,978
• Publication Number:
  US 20070183357A1
• Time in Patent Office: 1,411 Days
• Field of Search: 370254-255, 370/310, 370/328, 370331-332, 370/338, 370/345, 370/352, 370/400, 370/410, 370/422, 455/403, 455/422.1, 455418-420, 455/428, 4554321-4353, 455/550.1, 455560-561, 709/228, 709/238
• US Class Current: 370/328
• CPC Class Codes: H04W 8/005 Discovery of network devices, e.g. terminals

Abstract

The present apparatus comprises a radio access network element having at least one processor, and at least one memory operably connected to the at least one processor, whereby the radio access network element is adapted to execute instructions stored in the memory comprising discovery of at least one other element in a radio access network. The radio access element further comprises instructions for removal or addition of network elements, instructions for determining a paging area and instructions for forwarding messages from a mobile to a controller in another domain.

Claims

1. A radio access network element, comprising:

a processor; and

a memory coupled to said processor, whereby said memory comprising instructions executable by said processor for discovery of at least one other element in said radio access network, configured to;

send a message to an address;

establish a discovery session with said at least one other element;

determine data and protocols supported by said at least one other element;

retrieve said data; and

use said protocols.

2. The radio access network element according to claim 1, wherein said radio access network element is a transceiver, said at least one other element is a transceiver, and wherein said message is an advertise message sent to said radio access network element.

3. The radio access network element according to claim 1, wherein said radio access network element is a controller, said at least one other element is a transceiver, and wherein said message is an advertise message sent to said radio access network element.

4. The radio access network element according to claim 1, wherein said radio access network element is a controller, said at least one other element is a controller, and wherein said message is an advertise message sent to said radio access network element.

5. The radio access network element according to claim 2, 3 or 4, further comprising a means for sending a solicit message to said at least one other element.

6. The radio access network element according to claim 2, 3 or 4, wherein said advertise message is sent to a multicast address.

7. The radio access network element according to claim 2, 3 or 4,

wherein said advertise message is sent to a unicast address.

8. A radio access network element, comprising:

a processor; and

a memory coupled to said processor, whereby said memory comprising instructions executable by said processor for discovery of at least one other element in said radio access network, configured to;

send an access channel message to a first transceiver;

build an advertisement message;

forward said access channel message and said advertisement message to a controller;

establish a discovery session between said controller and said transceiver;

assess said transceiver'"'"'s capabilities; and

acknowledge said access channel message.

9. The radio access network element according to claim 8, wherein said access channel message and said discovery advertisement message are forwarded to said controller using a mobile session address.

10. The radio access network element according to claim 8, wherein said processor and said memory being further configured to:

request said transceiver for its preferred controller list; and

transfer control of said discovery session to another controller on said preferred controller list.

11. The radio access network element according to claim 8, wherein said forwarding said access channel message and said discovery advertisement message to a controller instruction further comprises encapsulating both said access channel message and said advertisement message.

12. The radio access network element according to claim 10, wherein said processor and said memory being further configured to:

send at least one solicit message to said another controller thereby allowing said controller responding with at least one advertisement message; and

establish a discovery session between said controller and said another controller.

13. The radio access network element according to claim 11, wherein said advertisement message, is a discovery advertisement message and both said access channel message and said advertisement message are encapsulated using a generic encapsulation protocol.

14. A radio access network element, comprising:

a processor; and

a memory coupled to said processor, wherein said memory comprising instructions executable by said processor for discovery of at least one other element in said radio access network and removal or addition of network elements, configured to;

inform an added element to add at least one new element to its neighbor list;

discover information about said added element;

detect neighboring elements;

establish discovery sessions with said neighboring elements;

gather information from said neighboring elements; and

transmit said information to access terminals in overhead messages.

15. The radio access network element according to claim 14, wherein said processor and said memory being further configured to transmit said information to access terminals in overhead messages instruction is performed by a neighbor list manager.

16. A radio access element operable to detect the presence of at least one other element, comprising:

means for sending a message to an address;

means for establishing a discovery session with said at least one other element;

means for determining data and protocols supported by said at least one other element;

means for retrieving said data; and

means for using said protocols.

17. The radio access element according, to claim 16, wherein said radio access network element means is a first transceiver, said at least one other element is a second transceiver, and wherein said message is an advertise message sent to said first transceiver.

18. The radio access element according to claim 16, wherein said radio access network element means is a controller, said at least one other element is a transceiver, and wherein said message is an advertise message sent to said controller.

19. The radio access element according to claim 16, wherein said radio access network element means is a first controller, said at least one other element is a second controller, and wherein said message is an advertise message sent to said first controller.

20. The radio access element according to claim 17, 18 or 19, further comprising a means for sending a solicit message to said at least one other element.

21. The radio access element according to claim 17, 18 or 19, wherein said advertise message is sent to a multicast address.

22. The radio access element according to claim 17, 18 or 19, wherein said advertise message is sent to a unicast address.

23. A method of discovering at least one other element by a radio access network element, comprising:

sending a message to an address;

establishing a discovery session with said at least one other element;

determining data and protocols supported by said at least one other element;

retrieving said data; and

using said protocols.

24. The method of discovering at least one other element in a radio access network according to claim 23, wherein said step of detecting the presence of at least one other element is performed by a first transceiver, said at least one other element is a second transceiver, and wherein said message is an advertise message sent to said first transceiver.

25. The method of discovering at least one other element in a radio access network according to claim 23, wherein said step of detecting the presence of at least one other element is performed by a controller, said at least one other element is a transceiver, and wherein said message is an advertise message sent to said controller.

26. The method of discovering at least one other element in a radio access network according to claim 23, wherein said radio access network element means is a first controller, said at least one other element is a second controller, and wherein said message is an advertise message sent to said first controller.

27. The method of discovering of at least one other element in a radio access network according to claim 24, 25 or 26, further comprising sending a solicit message to said at least one other element.

28. The method of discovering of at least one other element in a radio access network according to claim 24, 25 or 26, wherein said advertise message is sent to a multicast address.

29. The method of discovering of at least one other element in a radio access network according to claim 24, 25 or 26, wherein said advertise message is sent to a unicast address.

30. A method of discovering at least one other element by a radio access network element, comprising:

forwarding messages from a mobile to a controller in another domain, comprising;

sending an access channel message to a first transceiver;

building an advertisement message;

forwarding said access channel message and said discovery advertisement message to a controller;

establishing, a discovery session between said controller and said transceiver that forwarded said access channel message;

assessing said transceiver'"'"'s capabilities; and

acknowledging said access channel message.

31. The method of discovering of at least one other element in a radio access network according to claim 30, wherein said access channel message and said discovery advertisement message are forwarded to said controller using a mobile session address.

32. The method of discovering of at least one other element in a radio access network according to claim 30, wherein said step of forwarding messages from a mobile to a controller in another domain further comprises:

requesting said transceiver for its preferred controller list; and

transferring control of said radio session to another controller on said preferred controller list.

33. The method of discovering of at least one other element in a radio access network according to claim 30, wherein said step of forwarding said access channel message and said discovery advertisement message to a controller further comprises encapsulating both said access channel message and said advertisement message.

34. The method of discovering of at least one other element in a radio access network according to claim 32, wherein said step of transferring control of said radio session to another controller on said preferred controller list comprises:

sending at least one solicit message to said another controller;

said controller responding with at least one advertisement message; and

establishing a discovery session between said controller and said another controller.

35. The method of discovering of at least one other element in a radio access network according to claim 33, wherein said advertisement message is a discovery advertisement message and both said access channel message and said advertisement message are encapsulated using a generic encapsulation protocol.

36. A radio access element operable to detect the presence of at least one other element, comprising:

means for sending an access channel message to a first transceiver;

means for building an advertisement message;

means for forwarding said access channel message and said discovery advertisement message to a controller;

means for establishing a discovery session between said controller and said transceiver that forwarded said access channel message;

means, for assessing said transceiver'"'"'s capabilities; and

means for acknowledging said access, channel message.

37. The radio access element according to claim 36, wherein said access channel message and said discovery advertisement message are forwarded to said controller using a mobile session address.

38. The radio access element according to claim 37, wherein said means for transferring control of said radio session to another controller on said preferred controller list comprises:

means for sending at least one solicit message to said another controller;

means for said controller responding with at least one advertisement message; and

means for establishing a discovery session between said controller and said another controller.

39. The radio access element according to claim 36, wherein said means for forwarding messages from a mobile to a controller in another domain further comprises:

means for requesting said transceiver for its preferred controller list; and

means for transferring control of said radio session to another controller on said preferred controller list.

40. The radio access element according to claim 39, wherein said advertisement message is a discovery advertisement, message and both said access channel message and said advertisement message are encapsulated using a generic encapsulation protocol.

41. The radio access element according to claim 36, wherein said means for forwarding said access channel message and said discovery advertisement message to a controller further comprises means for encapsulating both said access channel message and said advertisement message.

42. The radio access element according to claim 36, wherein said means for transmitting said information to access terminals in overhead messages is performed by a neighbor list manager.

43. A radio access element operable to detect the presence of at least one other element, comprising:

means for informing neighboring elements to added at said least one new element to their neighbor list;

means for discovering information about said, added at least one element using discovery instructions;

means for detecting neighboring elements;

means for establishing discovery sessions with said neighboring elements;

means for gathering information from said neighboring elements; and

means for transmitting said information to access terminals in overhead messages.

44. A radio access element operable to detect the presence of at least one other element, comprising:

means for informing neighboring elements to add at said least one new element to their neighbor list;

means for discovering information about said added at least one element using discovery instructions;

means for determining a paging area, comprising;

means for using a neighbor list of at least one element to discover other elements; and

means for recursively building a paging area centered at said at least one element; and

means for forwarding messages from a mobile to a controller in another domain, comprising;

means for sending an access channel message to a first transceiver;

means for building an advertisement message;

means for forwarding said access channel message and said discovery advertisement message to a controller;

means for establishing a discovery session between said controller and said transceiver that forwarded said access channel message;

means for assessing said transceiver'"'"'s capabilities; and

means for acknowledging said access channel message.

45. A radio access element operable to detect the presence of at least one other element, comprising:

means for informing neighboring elements to add at said least one new element to their neighbor list; and

means for discovering information about said added at least one element using discovery instructions;

wherein said means for informing the neighboring elements comprising;

means for checking if there is a session with said at least one new element;

means for requesting a session with said at least one new element if said first element does not have a session with said at least one element;

means for retrieving publisher information for said at least one new element;

means for sending at least one solicit message to said at least one new element;

means for responding with an advertise message that contains said publisher information;

means for retrieving publisher information for said at least one new element; and

means for resolving capabilities of said at least new element, comprising;

means for sending a message to an address;

means for establishing a discovery session with said at least one other element;

means for determining data and protocols supported by said at least one other element;

means for retrieving said data; and

means for using said protocols.

46. A radio access element operable to detect the presence of at least one other element, comprising:

means for using a neighbor list of at least one element to discover other elements; and

means for recursively building a paging area centered at said at least one element, comprising;

means for checking if there is a session with said second element;

means for requesting a session with said second element if a session with said second element does not exist;

means for sending at least one solicit message to said second element;

means for responding with an advertise message that contains said publisher information; and

means for retrieving publisher information for said at least one neighboring element;

means for resolving capabilities of said second element, comprising;

means for sending a message to an address;

means for establishing a discovery session with said at least one other element;

means for determining data and protocols supported by said at least one other element;

means for retrieving said data; and

means for using said protocols.

47. The radio access element according to claim 46, wherein said means for recursively building a paging area centered at said at least one element further comprises:

means for registering for event notifications that indicate changes to said neighbor list of said second element; and

means for discovering additional elements contained in said second element'"'"'s neighbor list.

48. The radio access element according to claim 46, wherein said means for recursively building a paging area centered at said at least one element further comprises:

means for notifying said controller of a new element on said neighbor list of said at least one element;

means for sending an update of said neighbor list of said at least one element to said controller; and

means for discovering said new element.

49. A radio access network element, comprising:

a processor; and

a memory coupled to said processor, wherein said memory comprising instructions executable by said processor for discovery of at least one other element in said radio access network, configured to;

remove or add network elements;

determine a paging area;

forward messages from a mobile unit to a controller in another domain;

using use a neighbor list of said at least one other element to discover other elements,

recursively build a paging area centered at said at least one other element;

send an access channel message to a first transceiver;

build an advertisement message;

forward said access channel message and said discovery advertisement message to a controller;

establish a discovery session between said controller and said transceiver;

assess said transceiver'"'"'s capabilities; and

acknowledge said access channel message.