Cognitive use of multiple regulatory domains

• US 9,178,652 B2
• Filed: 08/12/2014
• Issued: 11/03/2015
• Est. Priority Date: 12/09/2010
• Status: Active Grant

• Current Assignee: Microsoft Technology Licensing LLC (Microsoft Corporation)
• Original Assignee: Microsoft Technology Licensing LLC (Microsoft Corporation)
• Inventors: Hassan, Amer A., Reed, Danny Allen, Griffin, Trenholme J.
• Primary Examiner(s): NGUYEN, TUAN HOANG
• Application Number:
  US14/458,203
• Publication Number:
  US 20140351379A1
• Time in Patent Office: 448 Days
• Field of Search: 455/62, 455/120, 455/450, 455/452.1, 455/454, 370/329, 370/341, 348/729, 348/E5.114
• US Class Current: 1/1
• CPC Class Codes: H04B 1/005 adapting radio receivers, transmitters andtransceivers for operation on two or more bands, i.e. frequency ranges
• CPC Class Codes: H04B 15/00 Suppression or limitation of noise or interference by means associated with receiver H04B1/10
• CPC Class Codes: H04B 7/12 Frequency diversity
• CPC Class Codes: H04L 1/0023 characterised by the signalling
• CPC Class Codes: H04L 1/0033 arrangements specific to the transmitter
• CPC Class Codes: H04L 1/0034 where the transmitter decides based on inferences, e.g. use of implicit signalling
• CPC Class Codes: H04L 2001/0096 Channel splitting in point-to-point links
• CPC Class Codes: H04L 65/60 Network streaming of media packets
• CPC Class Codes: H04W 16/14 Spectrum sharing arrangements between different networks
• CPC Class Codes: H04W 72/04 Wireless resource allocation
• CPC Class Codes: H04W 88/06 adapted for operation in multiple networks or having at least two operational modes, e.g. multi-mode terminals

Abstract

A wireless communication system that concurrently communicates information in multiple regulatory domains to facilitate audio/video media streaming and other high bandwidth operations. One domain may be licensed and the other may be unlicensed. Transmission in the licensed domain may occur in white space in the domain, and the amount of information transmitted in that domain may be limited by regulations. The amount of information conveyed in the licensed domain may also depend on channel conditions in either or both of the domains. As a result, the relative amount of information transmitted in each domain may vary dynamically. The system includes a transmitter that dynamically determines weighting coefficients applied to each of a plurality of channels to set power levels in both domains to achieve a desired metric for the overall communication. A corresponding receiver assembles the substreams into a stream that can then be displayed or otherwise processed.

Claims

1. A wireless computing device, comprising:

at least one radio,

at least one memory; and

at least one processor, wherein the at least one memory and the at least one processor are respectively configured to store and execute a policy engine component that is configured to;

dynamically determine at least one frequency in a first regulatory domain and at least one frequency in a second regulatory domain;

determine a transmit power level for each of the at least one frequencies in the second regulatory domain, wherein the transmit power level is determined at least in part based on regulatory constraints within the second regulatory domain;

cause data for transmission to be decomposed into at least a first portion and a second portion; and

cause the at least one radio, to concurrently transmit at least the first portion using the at least one frequency in the first regulatory domain and the second portion using the at least one frequency in the second regulatory domain.

2. The wireless computing device of claim 1, wherein the policy engine component is further configured to:

determine an error control coding rate for transmission of the second portion of the data based at least in part on transmission characteristics of the at least one frequency in the second regulatory domain and the determined transmit power level.

3. The wireless computing device of claim 2, wherein the error control coding rate for transmission of the second portion is based on a Shannon water-filling approach.

4. The wireless computing device of claim 1, wherein:

the first regulatory domain is a UNII domain or an ISM domain; and

the second regulatory domain is a digital TV domain.

5. The wireless computing device of claim 1, wherein the at least one radio includes:

a first radio configured for wireless communications in the first regulatory domain; and

a second radio configured for wireless communications in the second regulatory domain.

6. The wireless computing device of claim 1, wherein the policy engine component is further configured to:

determine whether the at least one frequency in the second regulatory domain remains available; and

in response to a determination that the at least one frequency in the second regulatory domain is unavailable, transmit data using the at least one frequency in the first regulatory domain without concurrently using the at least one frequency in the second regulatory domain.

7. The wireless computing device of claim 1, wherein the at least one memory and the at least one processor are also respectively configured to store and execute instructions that cause the wireless computing device to:

determine a first time variant function for the first regulatory domain;

determine a second time variant function for the second regulatory domain;

control the transmission of at least the first portion via the at least one frequency in the first regulatory domain according to the first time variant function; and

control the transmission of at least the second portion via the at least one frequency in the second regulatory domain according to the second time variant function.

8. A wireless computing device, comprising:

a radio subsystem,

at least one memory; and

at least one processor, wherein the at least one memory and the at least one processor are respectively configured to store and execute instructions that cause the wireless computing device to;

receive data via the radio subsystem, the reception of data including;

reception of a first portion of the data over at least one frequency in a first regulatory domain;

reception of a second portion of the data over at least one frequency in a second regulatory domain; and

generation of output data by combining the first portion with the second portion; and

adapt to a change in the at least one frequency in the second regulatory domain, wherein;

reception of the second portion of the data over the at least one frequency in the second regulatory domain comprises reception of the second portion over a first set of subchannels in the second regulatory domain; and

adaptation to the change in the at least one frequency comprises subsequently receiving a third portion of the data over a second set of subchannels different than the first set of subchannels.

9. The wireless computing device of claim 8, wherein the instructions also cause the wireless computing device to:

adapt to another change in the at least one frequency in the second regulatory domain; and

subsequently receive the data over subchannels in the first regulatory domain without concurrently receiving data over subchannels in the second regulatory domain.

10. The wireless computing device of claim 8, wherein:

additional instructions comprise a multi-media application component; and

the instructions also cause the wireless computing device to;

provide the output data to the multi-media application component.

11. The wireless computing device of claim 8, wherein:

the wireless computing device is a wireless display device;

the output data comprises audio/video content; and

the instructions also cause the wireless computing device to;

display the audio/video content.

12. The wireless computing device of claim 8, wherein:

the radio subsystem comprises a single radio that is configured to wirelessly transmit over both the first regulatory domain and the second regulatory domain.

13. At least one computer storage medium, comprising at least one of a memory or a disk, having instructions stored therein for causing a wireless computing device to perform operations, the operations comprising:

dynamically determining at least one frequency in a first regulatory domain and at least one frequency in a second regulatory domain;

decomposing data for transmission into at least a first portion and a second portion; and

concurrently transmitting at least the first portion using the at least one frequency in the first regulatory domain and the second portion using the at least one frequency in the second regulatory domain via at least one radio associated with the wireless computing device, including;

determining a transmit power level for each of the at least one frequencies in the second regulatory domain, wherein the transmit power level is determined at least in part based on regulatory constraints within the second regulatory domain.

14. The at least one computer storage medium of claim 13, wherein the operations further comprise:

determining an error control coding rate for transmission of the second portion of the data based at least in part on transmission characteristics of the at least one frequency in the second regulatory domain and the determined transmit power level.

15. The at least one computer storage medium of claim 14, wherein the error control coding rate for transmission of the second portion is based on a Shannon water-filling approach.

16. The at least one computer storage medium of claim 13, wherein:

transmitting at least the first portion includes transmitting at least the first portion over a first radio configured for wireless communications in the first regulatory domain; and

transmitting at least the second portion includes transmitting at least the second portion over a second radio configured for wireless communications in the first regulatory domain.

17. The at least one computer storage medium of claim 13, wherein:

concurrently transmitting at least the first portion and at least the second portion includes transmitting at least the first portion and at least the second portion over a single radio.

18. The at least one computer storage medium of claim 13, wherein the operations further comprise:

determining whether the at least one frequency in the second regulatory domain remains available; and

in response to a determination that the at least one frequency in the second regulatory domain is unavailable, transmitting data using the at least one frequency in the first regulatory domain without concurrently using the at least one frequency in the second regulatory domain.

19. The at least one computer storage medium of claim 18, wherein determining whether the at least one frequency in the second regulatory domain remains available includes:

obtaining information from an external database regarding unused channels in the second regulatory domain.

20. The at least one computer storage medium of claim 13, wherein the operations further comprise:

determining a first time variant function for the first regulatory domain;

determining a second time variant function for the second regulatory domain;

controlling the transmission of at least the first portion via the at least one frequency in the first regulatory domain according to the first time variant function; and

controlling the transmission of at least the second portion via the at least one frequency in the second regulatory domain according to the second time variant function.