Kenneth G Baker

US Patent:

6377612, Apr 23, 2002

Filed:

Jul 30, 1998

Appl. No.:

09/126692

Inventors:

Kenneth R. Baker - Boulder CO

Assignee:

Qualcomm Incorporated - San Diego CA

International Classification:

H04B 1707

US Classification:

375141, 375214, 455101, 342361

Abstract:

The invention includes methods and systems to improve the signal diversity between a repeater and a base station in a wireless communication system. A communications device transmits a wireless signal. The repeater receives two versions of the wireless signal using a first receiver system and a second receiver system. The repeater transmits two versions of the wireless signal that correspond to the two received versions. The repeater transmits the two versions with different signal polarizations so they can be isolated from one another at the base station. The base station receives the two versions from the repeater and isolates each version based on the difference in polarization. The base station processes the two diverse versions to produce a high-quality signal. The use of different polarizations to provide diverse signals between the repeater and the base station lowers signal power requirements and increases the capacity of CDMA systems.

US Patent:

6459725, Oct 1, 2002

Filed:

Jul 31, 1998

Appl. No.:

09/126694

Inventors:

Kenneth R. Baker - Boulder CO
Richard Dean - Boulder CO

Assignee:

Qualcomm Incorporated - San Diego CA

International Classification:

H03K 1100

US Classification:

375214, 375211, 370315, 370320, 370323, 370326

Abstract:

The invention includes methods and systems for use in a wireless communications system, such as a CDMA mobile communications system. A communications device transmits a wireless signal. A repeater system receives a first version of the wireless signal using a first receiver system and receives a second version of the wireless signal using a second receiver system. The repeater system switches between the first version of the wireless signal and the second version of the wireless signal to generate a third version of the wireless signal. The repeater system transmits the third version of the wireless signal and a base station system receives the third version of the wireless signal. In some embodiments of the invention, the wireless signals are Code Division Multiple Access (CDMA) signals. In some embodiments of the invention, the switching occurs at a rate of 4 MHz.

US Patent:

6469984, Oct 22, 2002

Filed:

Jun 24, 1999

Appl. No.:

09/339152

Inventors:

Kenneth R. Baker - Boulder CO

Assignee:

Qualcomm Incorporated - San Diego CA

International Classification:

H04B 714

US Classification:

370232, 370315

Abstract:

The system monitors traffic on a CDMA repeater. The system receives a metric related to the operation of the CDMA repeater and automatically determines the amount of call traffic on the CDMA repeater based on the metric. The metric related to operation of the CDMA repeater could be the signal power from the CDMA repeater. The amount of the call traffic on the CDMA repeater could be measured by determining the number of users on the CDMA repeater. The number of users could be determined from a formula where the signal output is proportional to the number of users on the CDMA repeater. The system may also store or transmit to a remote location the metric or the amount of call traffic on the CDMA repeater.

US Patent:

7062224, Jun 13, 2006

Filed:

Dec 10, 2002

Appl. No.:

10/316780

Inventors:

Kenneth R. Baker - Boulder CO, US
Brian K. Butler - La Jolla CA, US
Charles E. Wheatley - Del Mar CA, US

Assignee:

QUALCOMM Incorporated - San Diego CA

International Classification:

H04B 1/60

US Classification:

455 9, 455 15, 455 23, 370315

Abstract:

An apparatus and method for identifying remote communications transmitted via a repeater from remote communications not transmitted via the repeater. The method comprises the steps of receiving a plurality of signal transmissions originating from a plurality of remote stations, wherein each of the signal transmissions is associated with a call originating from one of the plurality of remote stations; processing the plurality of received signal transmissions to identify received transmissions that include a discriminant applied by a repeater; and designating each of the plurality of received signal transmissions as being transmitted via the repeater if the received signal transmission includes the discriminant.

US Patent:

7457584, Nov 25, 2008

Filed:

May 13, 2005

Appl. No.:

11/128830

Inventors:

Kenneth Baker - Boulder CO, US
Charles Wheatley - Del Mar CA, US
Daniel Willis - Lafayette CO, US
Leonid Sheynblat - Hillsborough CA, US

Assignee:

QUALCOMM Incorporated - San Diego CA

International Classification:

H04Q 7/20

US Classification:

455 111, 4554561, 455 131

Abstract:

A repeater of a wireless communication system includes a positioning unit, such as a GPS receiver, in order to calculate the location of the repeater. In addition, various techniques are described that exploit the positioning information generated by the repeater in order to improve the wireless communication system.

US Patent:

7526247, Apr 28, 2009

Filed:

Dec 4, 2003

Appl. No.:

10/729338

Inventors:

Kenneth Robert Baker - Boulder CO, US
Charles E. Wheatley - Del Mar CA, US

Assignee:

QUALCOMM Incorporated - San Diego CA

International Classification:

H04B 7/15

US Classification:

455 111, 455 134, 455 69, 4551272

Abstract:

A method and apparatus are disclosed for setting total reverse link gain between a repeater and a base station. The method and apparatus generally comprise setting total reverse link gain between a repeater and a base station comprises determining an operating point for the repeater; establishing a reverse communication link between the base station and a transceiver device within a coverage area of the repeater; determining if an increase in a reverse link gain is substantially equal to an increase in a noise figure of the base station, using a transmit power of the transceiver device; and adjusting the reverse link gain by an amount based on the operating point and based on a difference in reverse link gain values, if the increase in the reverse link gain is substantially equal to the increase in the noise figure of the base station, to set the total reverse link gain.

US Patent:

7590383, Sep 15, 2009

Filed:

Jan 11, 2005

Appl. No.:

11/033597

Inventors:

Richard Finch Dean - Lyons CO, US
Kenneth Robert Baker - Boulder CO, US

Assignee:

QUALCOMM Incorporated - San Diego CA

International Classification:

H04B 1/60
H04B 7/14
H04W 24/00
H04W 64/00

US Classification:

455 9, 455 15, 4554561, 370315

Abstract:

A method and system determines mobile station position information based upon base station identification and a repeater discriminant. A position location database includes base station identifications and repeater discriminant combinations, and unique position information associated with each combination. A repeater implements a discriminant to a transmitted signal in either the forward link, reverse link, or both. The position location database is accessed to determine mobile station position information based upon a base station identification and repeater discriminant.

US Patent:

7593360, Sep 22, 2009

Filed:

May 12, 2004

Appl. No.:

10/844666

Inventors:

Kenneth R. Baker - Boulder CO, US

Assignee:

QUALCOMM Incorporated - San Diego CA

International Classification:

H04B 7/216
H04L 12/26

US Classification:

370315, 370328, 370252

Abstract:

Apparatus and methods are disclosed for determining a tolerable propagation delay between a repeater and a base station in a communication system. In one embodiment, a tolerable length of fiber optic cable between a repeater and a base station is determined. More particularly, a desired search window size in time is determined. A maximum fiber optic cable delay value is determined based on the desired search window size. Also, a ratio value of fiber optic cable delay value to fiber optic cable length is then determined. The tolerable length of the fiber optic cable is then determined based on the maximum fiber optic cable delay value and the ratio value.