Reducing interference in a wireless network via antenna selection

• US 7,689,171 B2
• Filed: 11/27/2006
• Issued: 03/30/2010
• Est. Priority Date: 11/27/2006
• Status: Active Grant

• Current Assignee: Intel Corporation
• Original Assignee: Intel Corporation
• Inventors: Srikanteswara, Srikathyayani, Li, Guoqing C.
• Primary Examiner(s): Harper; Vincent P
• Assistant Examiner(s): SANTIAGO CORDERO, MARIVELISSE
• Application Number:
  US11/563,572
• Publication Number:
  US 20080125047A1
• Time in Patent Office: 1,219 Days
• Field of Search: 455/63.1, 455/63.4, 455/1, 455/13.3, 455/25, 455/562.1
• US Class Current: 455/63.1
• CPC Class Codes: H04B 7/0491 using two or more sectors, i.e. sector diversity
• CPC Class Codes: H04B 7/0608 Antenna selection according to transmission parameters

Abstract

Apparatus and method for reducing or avoiding at least in part one or more interferences in a wireless communication device are described herein. The method may include initially sensing by the device an interference from an interference source received by one or more of a plurality of sector antennas of the device. The device may then select, based at least in part on the sensing, a subset of the plurality of sector antennas for communicating with other devices in the wireless network.

Claims

1. A method, comprising:

sensing, by a device of a wireless network, a first interference from a first interference source, the first interference being received by first one or more of a plurality of sector antennas of the device;

sensing, by the device, a second interference from a second interference source, the second interference being received by the first one or more of the plurality of sector antennas;

applying a first and a second weight to the first and the second interference, respectively, to determine a first weighted interference of the first one or more of the plurality of sector antennas; and

selecting a subset of the plurality of sector antennas for use to communicate with other devices in the wireless network, based at least in part on the first weighted interference, to avoid at least in part the first interference and/or the second interference during said communicate;

wherein said selecting is performed by excluding from the subset the first one or more of the plurality of sector antennas if the first weighted interference is greater than a threshold.

2. The method of claim 1, further comprising:

sensing, by the device, a third interference from a third interference source, the third interference being received by second one or more of the plurality of sector antennas;

wherein said selecting is further based on said sensing of the third interference, to further avoid at least in part the third interference during said communicate.

3. The method of claim 2, further comprising:

sensing by the device a fourth and a fifth interference from a fourth and a fifth interference source, respectively, the fourth interference and the fifth interference being received by respective third and fourth one or more of the plurality of sector antennas;

wherein said selecting is further based on said sensing of the fourth and fifth interference, to further avoid at least in part the fourth and fifth interference during said communicate.

4. The method of claim 3, further comprising:

determining the first, second, third and fourth one or more of the plurality of sector antennas receiving the respective first, third, fourth, and fifth interferences;

wherein said selecting comprises selecting a subset of the plurality of sector antennas that does not include one or more of the determined one(s) of the plurality of sector antennas receiving the respective first, third, fourth, and fifth interferences.

5. The method of claim 1, further comprising:

determining the first one or more of the plurality of sector antennas receiving the first interference;

wherein said selecting comprises selecting a subset of the plurality of sector antennas that does not include at least one of the first one or more of the sector antennas determined to be receiving the first interference.

6. The method of claim 1, further comprising:

determining an interference type of the first interference;

wherein said selecting is further based at least in part on the determined interference type of the first interference.

7. The method of claim 1, wherein said sensing of the first or the second interference further comprises spectrum sensing, by the device, the first or the second interference received through a frequency band;

and

wherein said selecting is further based at least in part on said spectrum sensing.

8. The method of claim 7, wherein said frequency band is a 2.4 GHz band.

9. The method of claim 1, further comprising:

sensing a third and a fourth interference from a third and a fourth interference source, respectively, received by the first one or more of the plurality of sector antennas; and

applying a third and a fourth weight to the third and the fourth interference to determine the first weighted interference of the first one or more of the plurality of sector antennas.

10. The method of claim 1, further comprising:

sensing a third and a fourth interference from a third and a fourth interference source, respectively, received by a second one or more of the plurality of sector antennas;

applying a third and a fourth weight to the third and the fourth interference, respectively, to determine a second weighted interference of the second one or more of the plurality of sector antennas; and

excluding from the subset the second one or more of the plurality of sector antennas if the second weighted interference is greater than the threshold.

11. An article of manufacture, comprising:

a physical storage medium; and

a plurality of executable instructions stored in the physical storage medium designed to program a device to enable the device to;

determine a first weighted interference by applying a first weight to a first interference sensed from a first interference source by one or more of a plurality of sector antennas of the device, and applying a second weight to a second interference sensed from a second interference source by the one or more of the plurality of sector antennas; and

select a subset of the plurality of sector antennas of the device for use to communicate in a wireless network based at least in part on the first weighted interference;

wherein said selecting is performed by excluding from the subset the one or more of the plurality of sector antennas if the first weighted interference is greater than a threshold.

12. The article of claim 11, wherein said instructions are adapted to enable said device to perform a determination of interference type(s) of the first interference and/or the second interference to facilitate said selection of a subset of the plurality of sector antennas to communicate in the wireless network;

and

wherein said instructions are adapted to enable said device to select a subset by excluding one or more of the sector antennas receiving the first interference and/or the second interference.

13. The article of claim 12, wherein said instructions are adapted to enable said device to perform said determination by determining whether the first interference and/or the second interference is/are from a wireless local area network (WLAN) device, a microwave oven, a cordless telephone, and a Worldwide Interoperability for Microwave Access (WiMAX) device.

14. An apparatus, comprising:

a plurality of sector antennas;

a spectrum sensing module coupled to the sector antennas to sense one or more interferences received by one or more of the plurality of sector antennas; and

an antenna selection module coupled to the spectrum sensing module to;

determine a first weighted interference by applying a first weight to a first interference sensed from a first interference source by one or more of the plurality of sector antennas, and

applying a second weight to a second interference sensed from a second interference source by the one or more of the plurality of sector antennas, and

select a subset of the plurality of sector antennas to communicate with other devices in a wireless network based at least in part on the first weighted interference;

wherein said antenna selection module is further configured to compare the first weighted interference of the selected sector antenna(s) to a threshold; and

to select a subset of the plurality of sector antennas excluding from the subset sector antenna(s) having the first weighted interference if the first weighted interference is greater than a threshold.

15. The apparatus of claim 14, wherein said antenna selection module is adapted to determine which one(s) of the plurality of sector antennas receives the first interference and the second interference and to select the subset of the plurality of sector antennas further based at least in part on said determination.

16. The apparatus of claim 14, wherein said spectrum sensing module is adapted to determine interference type(s) of the first interference and/or the second interference sensed, and said antenna selection module selects the subset of the plurality of sector antennas further based at least in part on said determined interference type(s) of the first interference and/or the second interference.

17. The apparatus of claim 16, wherein said spectrum sensing module is further adapted to determine whether the first interference and/or the second interference is/are interference(s) from a wireless local area network (WLAN) device, a microwave oven, a cordless telephone, and/or a Worldwide Interoperability for Microwave Access (WiMAX) device.

18. The apparatus of claim 16, wherein said antenna selection module is adapted to apply the one or more weights to the first interference and/or the second interference based on said determined interference type(s) of the first interference and/or the second interference.

19. A system, comprising:

a mass storage device having an operating system therein;

an apparatus coupled to the mass storage device, the apparatus including;

a plurality of sector antennas;

a spectrum sensing module coupled to the sector antennas to sense one or more interferences received by one or more of the plurality of sector antennas; and

an antenna selection module coupled to the spectrum sensing module to;

determine a first weighted interference by applying a first weight to a first interference sensed from a first interference source by one or more of the plurality of sector antennas, and applying a second weight to a second interference sensed from a second interference source by the one or more of the plurality of sector antennas, and

select a subset of the plurality of sector antennas to communicate with other apparatuses in a wireless network based at least in part on the first weighted interference;

wherein said antenna selection module is further configured to compare the first weighted interference of the selected sector antenna(s) to a threshold; and

to select a subset of the plurality of sector antennas excluding from the subset sector antenna(s) having the first weighted interference if the first weighted interference is greater than a threshold.

20. The system of claim 19, further comprising a baseband and medium access control (MAC) block coupled to the antenna selection module to receive said selection.

21. The system of claim 19, wherein the system is one selected from the group consisting of a desktop computer, a laptop computer, a set-top box, a personal digital assistant (PDA), a web tablet, a pager, a text messenger, a game device, a smart appliance, or a wireless mobile phone.