Arrangements for association and re-association in a wireless network

• US 8,902,822 B2
• Filed: 08/15/2008
• Issued: 12/02/2014
• Est. Priority Date: 03/11/2008
• Status: Active Grant

• Current Assignee: Intel Corporation
• Original Assignee: Intel Corporation
• Inventors: Cordeiro, Carlos, Kesselman, Alex, Trainin, Solomon
• Primary Examiner(s): ANWAR, MOHAMMAD S
• Application Number:
  US12/228,900
• Publication Number:
  US 20090232063A1
• Time in Patent Office: 2,300 Days
• Field of Search: 370/329, 370/334, 370/339
• US Class Current: 370/329
• CPC Class Codes: H01Q 3/26 varying the relative phase or relative amplitude of energisation between two or more active radiating elements; varying the distribution of energy across a radiating aperture H01Q3/12, H01Q3/22, H01Q3/24 take precedence
• CPC Class Codes: H04B 7/0617 for beam forming
• CPC Class Codes: H04B 7/0682 using phase diversity (e.g. phase sweeping)
• CPC Class Codes: H04W 72/04 Wireless resource allocation
• CPC Class Codes: H04W 72/0453 Resources in frequency domain, e.g. a carrier in FDMA
• CPC Class Codes: H04W 72/51 based on terminal or device properties
• CPC Class Codes: H04W 74/0866 using a dedicated channel for access

Abstract

A method is disclosed for associating network devices to a network. The method can include receiving a beacon from a source by an antenna array, allocating resources to beamform and beamforming after receiving at least a portion of the beacon. The beamforming can be accomplished prior to completion of an association request and prior to receipt of an acceptance signal in response to the association request. Accordingly directional transmissions can be utilized transmit at least part of an association request and to transmit an acceptance signal corresponding to the association request.

Claims

1. A method comprising:

receiving at least a portion of a beacon from a source by at least one antenna;

allocating resources to perform beamforming;

beamforming after receiving the at least a portion of the beacon and prior to receipt of an association request acceptance signal; and

utilizing a directional configuration to communicate at least a portion of an association response that occurs in response to an association request, the association request comprising a transmission of a plurality of bits;

wherein a majority of the plurality of bits of the association request are received in a directional mode.

2. The method of claim 1 further comprising transmitting a media access control address in response to the beacon.

3. The method of claim 1 wherein beamforming comprises determining a relative direction from the at least one antenna to the source.

4. The method of claim 1 further comprising transmitting a media access control address in response to the beacon and triggering the beamforming based on receipt of the at least a portion of the beacon.

5. The method of claim 1 further comprising sending a re-association request in a directional mode.

6. The method of claim 1 wherein the directional transmission utilizes a higher data rate than an omni-directional transmission.

7. The method of claim 1 wherein determining the relative direction comprises determining one of direction of arrival information, an angle of arrival, a time difference of arrival or a frequency difference of arrival.

8. An apparatus comprising:

a sensor to receive an incoming signal;

a direction detect module to detect a direction of origin of the incoming signal;

a beamformer module to beamform towards the incoming signal;

a trigger module to trigger the beamforming module to beamform, wherein the trigger module activates the beamformer module before an end of an association process; and

a receiver to receive a directional transmission during the association process, the directional transmission comprising an association request comprising a plurality of bits, wherein a majority of the plurality of bits are received in a directional mode.

9. The apparatus of claim 8 wherein the beacon is sent in an omni-directional transmission with a lower data rate than a data rate of the directional transmission.

10. The apparatus of claim 8 wherein the incoming signal is a beacon.

11. The apparatus of claim 8 further comprising a receiver to receive an association request acceptance signal.

12. The apparatus of claim 8 further comprising transmitting a re-association request utilizing data from the beamforming.

13. A non-transitory computer readable storage medium including instructions that, when executed by one or more processors, cause the one or more processors to:

receive a beacon from a source by at least one antenna;

allocate resources to perform beamforming; and

beamform after receiving at least a portion of the beacon and prior to receipt of an association request acceptance signal;

utilize a directional configuration to communicate at least a portion of an association response that occurs in response to an association request, the association request comprising a transmission of a plurality of bits;

wherein, a majority of the plurality of bits of the association request are received in a directional mode.

14. The non-transitory computer readable storage medium of claim 13, wherein the one or more processors are further configured to transmit a media access control address in response to the received beacon.

15. The non-transitory computer readable storage medium of claim 13, wherein the one or more processors are further configured to determine a relative direction from the at least one antenna to the source as part of the beamforming process.

16. The non-transitory computer readable storage medium of claim 13, wherein the one or more processors are further configured to transmit a media access control address in response to the beacon and trigger the beamforming based on receipt of at least a portion of the beacon.

17. A method comprising:

receiving a beacon transmission from a remote wireless communications device;

based at least on a portion of the beacon transmission, performing millimeter wave beamforming towards the remote wireless communications device; and

engaging in an association process comprising transmitting an association request, the association request comprising a plurality of bits;

wherein said beamforming begins before completion of the association process and a majority of the plurality of bits of the association request are transmitted in a directional mode.

18. The method of claim 17, further comprising detecting a direction of origin of the beacon.

19. The method of claim 18, wherein said engaging in the association process further comprises:

receiving an association response from the remote wireless communications device.

20. The method of claim 17, wherein the remote wireless communications device is a network controller device.

21. The method of claim 17, wherein said beamforming begins before starting of the association process with the remote wireless communications device.

22. An apparatus comprising:

a receiver to receive a beacon from a remote wireless communications device;

a beamformer module to, based at least on a portion of the beacon, perform millimeter wave beamforming towards the remote wireless communications device; and

a trigger module to trigger the beamforming module to beamform, wherein the trigger module activates the beamformer module before an end of an association process, the association process comprising an association request comprising a plurality of bits, wherein a majority of the plurality of bits are communicated in a directional mode.

23. The apparatus of claim 22, further comprising a direction detect module to detect a direction of origin of the beacon.

24. The apparatus of claim 22, wherein the association process includes the exchange of messages with the remote wireless communications device, the messages including the association request and an association response.

25. The apparatus of claim 24, further comprising a transmitter to transmit the association request, and wherein the receiver is configured to receive the association response.

26. The apparatus of claim 22, wherein the trigger module is configured to activate the beamformer module before a start of the association process.

27. The apparatus of claim 22, wherein the remote wireless communications device is a network controller device.

28. A non-transitory computer readable storage medium including instructions that, when executed by one or more processors cause the one or more processors to:

receive a beacon transmission from a remote wireless communications device;

based at least on a portion of the beacon transmission, perform millimeter wave beamforming towards the remote wireless communications device; and

engage in an association process, wherein the engaging causes the one or more processors to transmit an association request, the association request comprising a plurality of bits;

wherein said beamforming begins before completion of the association process and a majority of the plurality of bits of the association request are transmitted in a directional mode.