Spread spectrum wireless over non-contiguous channels

• US 10,129,883 B2
• Filed: 07/15/2016
• Issued: 11/13/2018
• Est. Priority Date: 08/26/2014
• Status: Active Grant

• Current Assignee: Microsoft Technology Licensing LLC (Microsoft Corporation)
• Original Assignee: Microsoft Technology Licensing LLC (Microsoft Corporation)
• Inventors: Hassan, Amer Aref, Mitchell, Paul William Alexander, Garnett, Paul W.
• Primary Examiner(s): Ha, Dac
• Application Number:
  US15/211,305
• Publication Number:
  US 20160330744A1
• Time in Patent Office: 851 Days
• CPC Class Codes: H04B 1/69 Spread spectrum techniques
• CPC Class Codes: H04B 1/707 using direct sequence modulation
• CPC Class Codes: H04J 13/00 Code division multiplex systems for frequency hopping H04B1/713
• CPC Class Codes: H04J 13/0003 Code application, i.e. aspects relating to how codes are applied to form multiplexed channels
• CPC Class Codes: H04L 27/0006 Assessment of spectral gaps suitable for allocating digitally modulated signals, e.g. for carrier allocation in cognitive radio for spectrum sharing between different networks H04W16/14
• CPC Class Codes: H04L 5/0016 Time-frequency-code
• CPC Class Codes: H04W 52/38 TPC being performed in particular situations
• 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 88/08 Access point devices

Abstract

Techniques for spread spectrum wireless over non-contiguous channels are described. In at least some embodiments, a set of channels is selected for wireless communication, with at least some of the channels being non-contiguous (e.g., non-adjacent) from one another. A spreading sequence is selected, such as based on attributes of a selected set of channels. Communication data that is to be transmitted over the set of channels is combined with the spreading sequence to generate a spread spectrum signal. The spread spectrum signal is then divided into multiple sub-signals for transmission over the set of channels.

Claims

1. A system comprising:

one or more processors; and

one or more computer-readable storage media storing instructions that are executable by the one or more processors to perform operations including;

selecting a set of wireless channels for routing a communication session, the set of wireless channels including one or more non-contiguous wireless channels;

selecting a spreading sequence for spreading data of the communication session based on one or more attributes of the set of wireless channels;

communicating identifiers for the set of wireless channels and the spreading sequence to a remote device;

receiving sub-signals over the set of wireless channels including the one or more non-contiguous wireless channels;

combining the sub-signals into a combined signal; and

demodulating the combined signal with the spreading sequence to obtain a stream of communication data as part of the communication session.

2. The system as recited in claim 1, the one or more non-contiguous wireless channels include one or more white spaces.

3. The system as recited in claim 1, wherein said combining comprises multiplexing the sub-signals into the combined signal.

4. The system as recited in claim 1, wherein the spreading sequence is identified based on an identifier for a client device from which the sub-signals are received.

5. The system as recited in claim 1, wherein said demodulating separates the spreading sequence from the communication data within the combined signal.

6. The system as recited in claim 1, wherein the communication data includes one or more of voice data, video data, or content data for the communication session.

7. The system as recited in claim 1, wherein the system comprises a wireless base station, and the operations further include communicating the stream of communication data from the wireless base station to the remote device.

8. The system as recited in claim 1, wherein said selecting the set of wireless channels comprises selecting the set of wireless channels based on an estimated bandwidth requirement for the communication session.

9. The system as recited in claim 1, wherein the one or more attributes comprise a combined bandwidth of the set of wireless channels.

10. A method comprising:

selecting a spreading sequence for spreading data of a communication session based on one or more attributes of a set of non-contiguous wireless channels;

communicating identifiers for the set of non-contiguous wireless channels and the spreading sequence to a remote device;

receiving sub-signals over the set of non-contiguous wireless channels;

combining the sub-signals into a combined signal; and

demodulating the combined signal with the spreading sequence to obtain communication data as part of the communication session.

11. The method as recited in claim 10, wherein said combining comprises multiplexing the sub-signals into the combined signal.

12. The method as recited in claim 10, wherein the spreading sequence is identified based on an identifier for a client device from which the sub-signals are transmitted.

13. The method as recited in claim 10, wherein said demodulating separates the spreading sequence from the communication data within the combined signal.

14. The method as recited in claim 10, further comprising communicating the communication data from a wireless base station to the remote device.

15. A method comprising:

selecting a spreading sequence for spreading data of a communication session based on a combined bandwidth of a set of non-contiguous wireless channels;

communicating identifiers for the set of non-contiguous wireless channels and the spreading sequence to a remote device;

combining sub-signals received over the set of non-contiguous wireless channels into a combined signal; and

demodulating the combined signal with the spreading sequence to obtain communication data as part of the communication session.

16. The method as recited in claim 15, wherein said combining comprises multiplexing the sub-signals into the combined signal.

17. The method as recited in claim 15, wherein the spreading sequence is identified based on an identifier for a client device from which the sub-signals are received.

18. The method as recited in claim 15, wherein said demodulating separates the spreading sequence from the communication data within the combined signal.

19. The method as recited in claim 15, wherein the sub-signals are received from the remote device, and wherein the method further includes communicating the communication data to a different remote device.

20. The method as recited in claim 15, further comprising selecting the set of non-contiguous wireless channels based on an estimated bandwidth requirement for the communication session.