Power Supply Control Based on Transmit Power Control and Methods for use Therewith

• US 20090131095A1
• Filed: 11/21/2007
• Published: 05/21/2009
• Est. Priority Date: 11/21/2007
• Status: Abandoned Application

• Current Assignee: Avago Technologies General IP PTE Limited (Broadcom, Inc.)
• Original Assignee: Broadcom Corporation (Broadcom, Inc.)
• Inventors: Rofougaran, Ahmadreza (Reza)
• Application Number:
  US11/943,679
• Publication Number:
  US 20090131095A1
• Time in Patent Office: Days
• US Class Current: 455/522
• CPC Class Codes: H04W 52/146 Uplink power control
• CPC Class Codes: H04W 52/245 taking into account received signal strength
• CPC Class Codes: H04W 52/283 Power depending on the position of the mobile

Abstract

An integrated circuit includes an RF transmitter that transmits a transmit signal at a selectable transmit power to a base station in accordance with a wireless telephony protocol, based on a transmit power control signal. An RF receiver receives a received signal from the base station in accordance with the wireless telephony protocol, and generates a feedback signal based on either a protocol parameter of the wireless telephony protocol or a position signal. A processing module generates the transmit power control signal based on the feedback signal, and generates a power mode signal for adjusting transmitter power supply parameters, based on the transmit power control signal.

Claims

1. An integrated circuit (IC) for use in a wireless telephony device, the IC comprising:

an RF transmitter that transmits a transmit signal at a selectable transmit power to a base station in accordance with a wireless telephony protocol, based on a transmit power control signal;

an RF receiver that receives a received signal from the base station in accordance with the wireless telephony protocol, and that generates a feedback signal based on a protocol parameter of the wireless telephony protocol; and

a processing module, coupled to RF receiver and the RF transmitter, that generates the transmit power control signal based on the feedback signal, and that generates a power mode signal for adjusting transmitter power supply parameters, based on the transmit power control signal.

2. The IC of claim 1 further comprising:

a power management circuit, coupled to the processing module, that adjusts a power supply signal of the RF transmitter based on the power mode signal.

3. The IC of claim 2 wherein the power supply signal includes a power supply voltage.

4. The IC of claim 2 wherein the power supply signal includes a power supply current.

5. The IC of claim 1 wherein an off-chip power management circuit adjusts a power supply signal of the RF transmitter based on the power mode signal.

6. The IC of claim 5 wherein the power supply signal includes a power supply voltage.

7. The IC of claim 5 wherein the power supply signal includes a power supply current.

8. An integrated circuit (IC) for use in a wireless telephony device, the IC comprising:

an RF transmitter that transmits a transmit signal at a selectable transmit power to a base station in accordance with a wireless telephony protocol, based on a transmit power control signal;

a GPS receiver that receives GPS data;

an RF receiver, that receives a received signal from the base station in accordance with the wireless telephony protocol; and

a processing module, coupled to RF receiver and the RF transmitter, that generates the transmit power control signal based on the GPS data, and that generates a power mode signal for adjusting transmitter power supply parameters, based on the transmit power control signal.

9. The IC of claim 8 further comprising:

a power management circuit, coupled to the processing module, that adjusts a power supply signal of the RF transmitter based on the power mode signal.

10. The IC of claim 9 wherein the power supply signal includes a power supply voltage.

11. The IC of claim 9 wherein the power supply signal includes a power supply current.

12. The IC of claim 8 wherein an off-chip power management circuit adjusts a power supply signal of the RF transmitter based on the power mode signal.

13. The IC of claim 12 wherein the power supply signal includes a power supply voltage.

14. The IC of claim 12 wherein the power supply signal includes a power supply current.

15. The IC of claim 8 wherein the RF receiver and the GPS receiver share at least one common component.

16. A method use in a wireless telephony device, the method comprising:

transmitting a transmit signal via an RF transmitter at a selectable transmit power to a base station in accordance with a wireless telephony protocol, based on a transmit power control signal;

receiving a received signal from the base station in accordance with the wireless telephony protocol;

generating a feedback signal based on a protocol parameter of the wireless telephony protocol;

generating the transmit power control signal based on the feedback signal; and

adjusting a power supply signal of the RF transmitter, based on the transmit power control signal.

17. The IC of claim 16 wherein the power supply signal includes a power supply voltage.

18. The IC of claim 16 wherein the power supply signal includes a power supply current.

20. The IC of claim 16 wherein the power supply signal includes a power supply voltage.

21. The IC of claim 16 wherein the power supply signal includes a power supply current.

19. A method use in a wireless telephony device, the method comprising:

transmitting a transmit signal via an RF transmitter at a selectable transmit power to a base station in accordance with a wireless telephony protocol, based on a transmit power control signal;

receiving a received signal from the base station in accordance with the wireless telephony protocol;

generating GPS data;

generating the transmit power control signal based on the GPS data; and

adjusting a power supply signal of the RF transmitter, based on the transmit power control signal.