Method and System for Signal Processing and Transmission

• US 20100035562A1
• Filed: 08/05/2008
• Published: 02/11/2010
• Est. Priority Date: 08/05/2008
• Status: Abandoned Application

• Current Assignee: Google Technology Holdings LLC (Alphabet Inc.)
• Original Assignee: Motorola, Inc. (Motorola Solutions, Inc.)
• Inventors: Mach, Richard E., Alberth, William P. JR.
• Application Number:
  US12/186,276
• Publication Number:
  US 20100035562A1
• Time in Patent Office: Days
• US Class Current: 455/75
• CPC Class Codes: H04B 15/02 Reducing interference from electric apparatus by means located at or near the interfering apparatus
• CPC Class Codes: H04B 2215/068 by avoiding a reception frequency range
• CPC Class Codes: H04W 36/06 Reselecting a communication resource in the serving access point
• CPC Class Codes: H04W 36/30 by measured or perceived connection quality data
• 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 method, wireless communication device (402) and base station (502) for signal processing and transmission is provided. The method includes detecting (604) simultaneous operation of a radio transmitter of the wireless communication device within a first predefined frequency band and a radio receiver of the wireless communication device within a second predefined frequency band. Further, the method includes reducing (606), based on the detecting, a bandwidth of an operating signal of the radio transmitter from a standard bandwidth value to a reduced bandwidth value. The bandwidth is reduced based on a bandwidth reduction factor. Furthermore, the method includes transmitting (608) the operating signal within the first predefined frequency band from the radio transmitter.

Claims

1. A method at a wireless communication device comprising:

detecting simultaneous operation of a radio transmitter of the wireless communication device within a first predefined frequency band and a radio receiver of the wireless communication device within a second predefined frequency band;

reducing, based on the detecting, a bandwidth of an operating signal of the radio transmitter from a standard bandwidth value to a reduced bandwidth value; and

transmitting the operating signal within the first predefined frequency band from the radio transmitter using the reduced bandwidth value.

2. The method as recited in claim 1, wherein the second predefined frequency band is within a frequency range of 1575 MHz to 1576 MHz.

3. The method as recited in claim 2, wherein the first predefined frequency band is within a frequency range of 776 MHz to 787 MHz.

4. The method as recited in claim 1, wherein the second predefined frequency band includes a frequency harmonic of the operating signal of the radio transmitter.

5. The method as recited in claim 1, wherein the reducing is based on a bandwidth reduction factor that is based on one or more of:

an out-of-band interference value associated with the operating signal and signal quality metrics for a signal received at the radio receiver,

6. The method as recited in claim 1, wherein reducing the bandwidth of the operating signal comprises:

maintaining a constant signal power distribution value of the operating signal within the first predefined frequency band.

7. The method as recited in claim 1 further comprising:

transmitting the operating signal using the standard bandwidth value when the operation of the radio transmitter is outside the first predefined frequency band.

8. A method at a base station comprising:

receiving an operating signal from a radio transmitter of a wireless communication device within a first predefined frequency band;

receiving a notification from the wireless communication device that a radio receiver of the wireless communication device is active within a second predefined frequency band; and

transmitting, based on the receiving an operating signal and the receiving a notification, a control signal for controlling one of;

a transmission channel and a bandwidth of the operating signal of the radio transmitter of the wireless communication device.

9. The method as recited in claim 8, wherein the first predefined frequency band is within a frequency range of 776 MHz to 787 MHz.

10. The method as recited in claim 8, wherein the second predefined frequency band includes a frequency harmonic of the operating signal.

11. The method as recited in claim 8, wherein the control signal comprises:

an instruction assigning a different operating frequency band to the radio transmitter.

12. The method as recited in claim 8, wherein the control signal comprises:

an instruction restricting access of the radio transmitter to the first predefined frequency band for a predefined duration of time.

13. The method as recited in claim 8, wherein the control signal comprises:

an instruction restricting allocation of one or more resource blocks for signal transmission for the radio transmitter.

14. The method as recited in claim 8, wherein the control signal comprises:

an instruction to reduce, at the wireless communication device, the bandwidth of the operating signal of the radio transmitter from a standard bandwidth value to a reduced bandwidth value, wherein the bandwidth is reduced based on a bandwidth reduction factor.

15. The method as recited in claim 14, wherein the bandwidth reduction factor is based on an out-of-band interference value associated with the operating signal.

16. The method as recited in claim 14 further comprising:

updating a scheduler in a network corresponding to the reduced bandwidth value of the operating signal of the radio transmitter.

17. The method as recited in claim 14 further comprising:

detecting the operating signal at the reduced bandwidth value at the base station.

18. The method as recited in claim 17, wherein detecting the operating signal at the reduced bandwidth value comprises:

performing a joint detection at the base station of multiple bandwidth formats of the operating signal transmitted from the wireless communication device.

19. A wireless communication device comprising:

a radio transmitter configured to transmit an operating signal within a first predefined frequency band with a constant signal power distribution value at one of a standard bandwidth value and a reduced bandwidth value;

a radio receiver configured to operate within a second predefined frequency band;

a controller configured to generate an output signal based on detection of simultaneous operation of the radio transmitter within the first predefined frequency band and the radio receiver within the second predefined frequency band; and

a signal processor configured to reduce a bandwidth of the operating signal of the radio transmitter from the standard bandwidth value to the reduced bandwidth value based on the output signal.

20. A base station comprising:

a receiver configured to;

receive an operating signal from a radio transmitter of a wireless communication device within a first predefined frequency band; and

receive a notification from the wireless communication device that a radio receiver of the wireless communication device is active within a second predefined frequency band; and

a controller configured to;

generate an output signal based on simultaneous detection of operation of the radio transmitter within the first predefined frequency band and the notification from the wireless communication device; and

a transmitter configured to;

transmit, based on the receiving an operating signal and the receiving a notification, a control signal for controlling one of;

a transmission channel and a bandwidth of the operating signal of the radio transmitter of the wireless communication device.