Directional transmissions to multiple wireless devices

• US 7,397,782 B2
• Filed: 05/19/2005
• Issued: 07/08/2008
• Est. Priority Date: 05/19/2005
• Status: Expired due to Fees

• Current Assignee: Intel Corporation
• Original Assignee: Intel Corporation
• Inventors: Posamentier, Joshua
• Primary Examiner(s): GELIN, JEAN ALLAND
• Application Number:
  US11/134,214
• Publication Number:
  US 20060262747A1
• Time in Patent Office: 1,146 Days
• Field of Search: 455/403, 455/404.1, 455/404.2, 455/500, 455/422.1, 455/550.1, 455/560, 455/561, 455/562.1, 455/426.1, 455/39, 455/73, 455/456.1, 455/456.2, 455/456.3, 370/310, 370/328, 370/329, 370/335
• US Class Current: 370/338
• CPC Class Codes: G01S 3/043 Receivers
• CPC Class Codes: G01S 5/0027 of actual mobile position, i.e. position determined on mobile
• CPC Class Codes: H04W 16/28 using beam steering

Abstract

A wireless communications device receives information about the locations of other wireless communications devices from those other wireless communications devices, uses the location information to determine what directions those other wireless communications devices are from it, and creates a directional transmission to focus the transmission in the direction of one or more of those other wireless communications devices.

Claims

1. A system, comprising:

a first wireless device to;

communicate with multiple mobile wireless devices;

obtain location information from the multiple mobile wireless devices about locations of the multiple mobile wireless devices;

determine, based on the location information, a direction of each of the mobile wireless devices from the first wireless device;

determine a range of directions that encompasses the directions of a group of the mobile wireless devices; and

transmit a directional signal that encompasses the range of directions;

wherein said obtaining the location information is not based on measuring directions from which the signals from the mobile wireless devices are received.

2. The system of claim 1, wherein the first wireless device is configured to use a phased array antenna technique.

3. The system of claim 1, wherein the first wireless device is configured to use a power steering antenna technique.

4. The system of claim 1, wherein the first wireless device is further configured to convert the location information into locations relative to its own location.

5. The system of claim 1, wherein the first wireless device is further configured to use the information about the directions to determine which mobile wireless devices are to be in the group.

7. The system of claim 1, further comprising at least one antenna coupled to the first wireless device.

6. A method, comprising:

receiving location information from multiple mobile wireless devices about locations of the multiple mobile wireless devices;

determining, from the location information, a relative direction to each of the mobile wireless devices;

grouping the relative directions into a group of relative directions that are within a range of relative directions; and

transmitting a directional signal that encompasses the group of relative directions at one time.

8. The method of claim 6, wherein said transmitting a directional signal comprises transmitting using a phased array technique.

9. The method of claim 6, wherein said receiving comprises receiving the location information based on a grid coordinate system.

10. The method of claim 6, wherein said receiving comprises receiving the location information based on a global positioning system.

11. A machine-readable medium that provides instructions, which when executed by a computing platform, result in at least one machine performing operations comprising:

receiving location information from multiple mobile wireless devices about locations of the multiple mobile wireless device;

determining, from the location information, a relative direction to each of the mobile wireless devices;

grouping the relative directions into a group of relative directions that are within a group of relative directions; and

transmitting a directional signal to encompass the group of relative directions at one time.

12. The article of claim 11, wherein said receiving comprises receiving the location information based on a grid coordinate system.