PAIRING WITH DIRECTIONAL CODE SEQUENCE

• US 20130078923A1
• Filed: 09/26/2011
• Published: 03/28/2013
• Est. Priority Date: 09/26/2011
• Status: Active Grant

• Current Assignee: Avago Technologies International Sales Pte Limited (Broadcom, Inc.)
• Original Assignee: Broadcom Corporation (Broadcom, Inc.)
• Inventors: Ekbatani, Siavash, Hansen, Christopher
• Granted Patent: US 8,634,777 B2
• Time in Patent Office: Days
• US Class Current: 455/41.2
• CPC Class Codes: H04W 76/14 Direct-mode setup
• CPC Class Codes: H04W 8/005 Discovery of network devices, e.g. terminals

Abstract

Disclosed are various embodiments of pairing with a directional code sequence. In one embodiment a method includes discovering that a user device is within proximity of a pairing device. A directional code sequence based upon variations in the position of the user device is obtained and a communication link is established between the user device and the pairing device in response to the directional code sequence. In another embodiment, a system includes a user device and a pairing device configured to establish a communication link with the user device in response to a sequence of position variations of the user device. In another embodiment, a method includes obtaining a sequence of characters corresponding to a directional code sequence from a pairing device and transmitting a signal from a user device to the pairing device from a sequence of positions corresponding to the sequence of characters.

Claims

1. A method, comprising:

discovering that a user device is within proximity of a pairing device;

obtaining a directional code sequence from the user device, the directional code sequence based upon variations in position of the user device during a series of time frames; and

establishing a communication link between the user device and the pairing device in response to the directional code sequence.

2. The method of claim 1, wherein the position of the user device is varied between a predefined number of spatial segments.

3. The method of claim 1, wherein obtaining the directional code sequence comprises:

obtaining, during a first time frame, a signal from the user device in a position corresponding to a first spatial segment; and

obtaining, during a second time frame, a signal from the user device in a position corresponding to a second spatial segment.

4. The method of claim 3, wherein the first and second time frames are consecutive time frames of the series of time frames.

5. The method of claim 3, wherein the first and second spatial segments are vertically displaced.

6. The method of claim 3, wherein the first and second spatial segments are horizontally displaced.

7. The method of claim 1, wherein obtaining the directional code sequence comprises:

obtaining a signal from the user device at each time frame of the series of time frames;

resolving a direction for each of the obtained signals; and

determining the directional code sequence based at least in part upon the resolved direction corresponding to each time frame of the series of time frames.

8. The method of claim 7, wherein the each of the obtained signals includes a predefined polarization.

9. The method of claim 8, further comprising authenticating the user device based upon the predefined polarizations over the series of time frames.

10. The method of claim 1, further comprising:

discovering a plurality of user devices within proximity of the pairing device; and

excluding at least one of the plurality of user devices based upon identified characteristics of the at least one user device.

11. A system, comprising:

a user device; and

a pairing device configured to establish a communication link with the user device in response to a sequence of position variations of the user device.

12. The system of claim 11, wherein the pairing device is configured to resolve the position of the user device at each time frame of a series of time frames based upon a signal transmitted from the user device during each of the time frames.

13. The system of claim 12, wherein the signal is a continuous signal transmitted by the user device over the series of time frames.

14. The system of claim 12, wherein the user device transmits the signal in response to a prompt from the pairing device.

15. The system of claim 12, wherein the pairing device includes a multiple antenna transceiver.

16. The system of claim 11, further comprising a plurality of pairing devices, wherein each of the plurality of pairing devices is configured to establish a communication link with the user device in response to a different sequence of position variations of the user device.

17. The system of claim 11, wherein the pairing device is configured to:

discover a plurality of user devices within proximity of the pairing device; and

prioritize the plurality of user devices based at least in part upon identified characteristics of the user devices.

18. The system of claim 17, wherein the communication link is configured based at least in part upon mobility characteristics of the user device.

19. A method, comprising:

obtaining a sequence of characters from a pairing device, the sequence of characters corresponding to a directional code sequence;

transmitting a signal, from a user device to the pairing device, from a sequence of positions corresponding to the sequence of characters; and

establishing a communication link between the user device and the pairing device based at least in part upon verification of the sequence of user device positions.

20. The method of claim 19, wherein the position of the user device is varied based upon a predefined time frame.