METHODS AND APPARATUS FOR CONTROLLING THE OPERATION OF WIRELESS COMMUNICATIONS SYSTEMS

• US 20090104900A1
• Filed: 10/22/2007
• Published: 04/23/2009
• Est. Priority Date: 10/22/2007
• Status: Active Grant

• Current Assignee: Panasonic Corporation (Panasonic Holdings Corporation)
• Original Assignee: Matsushita Electric Industrial Company Limited (Panasonic Holdings Corporation)
• Inventors: Lee, Wayne S.
• Granted Patent: US 8,086,225 B2
• Time in Patent Office: Days
• US Class Current: 455/418
• CPC Class Codes: H04B 1/0053 with common antenna for more than one band
• CPC Class Codes: H04B 1/0475 with means for limiting noise, interference or distortion H04B1/0483 takes precedence

Abstract

Methods and apparatus for controlling events, timing and operational characteristics of wireless communications devices. An exemplary wireless communications apparatus comprises a baseband processor, radio frequency (RF) generating circuitry, a programmable event controller, and a memory device. The RF generating circuitry and programmable event controller are integrated in the same integrated circuit. The memory device, which may also be embedded in the same integrated circuit as the event controller and RF generating circuitry, is configured to store a sequence of instructions the event controller executes in response to a baseband command. The memory device is also configured to store control parameter data, which the event controller retrieves and uses to enable, disable, select and deselect various devices on the integrated circuit and to set, adjust or modify the operational characteristics of the RF generating circuitry (e.g., band selection and tuning) and other circuitry (e.g., power control circuitry) of the communications apparatus.

Claims

1. A wireless communications apparatus, comprising:

a baseband processor;

an integrated circuit including RF generating circuitry and a programmable event controller; and

a memory device coupled to said programmable event controller, said memory device configured to store instructions executable by said programmable event controller and control parameter data for use by said programmable event controller to configure operational characteristics of said RF generating circuitry.

2. The wireless communications apparatus of claim 1 wherein the memory device is integrated in the same integrated circuit as are the RF generating circuitry and programmable event controller.

3. The wireless communications apparatus of claim 1 wherein the wireless communications apparatus comprises a multi-mode wireless communications apparatus configurable for operation according to multiple wireless standards and said integrated circuit includes a plurality of modulators which the programmable event controller is operable to select from to accommodate the multiple wireless standards.

4. The wireless communications apparatus of claim 1 wherein said RF generating circuitry includes frequency determining devices and said programmable event controller is configured to execute instructions from said memory device that provide frequency control parameters for the frequency determining devices.

5. The wireless communications apparatus of claim 1 wherein said integrated circuit further includes power control devices and said programmable event controller is configured to execute instructions from said memory device that provide power control parameters for the power control devices.

6. The wireless communications apparatus of claim 5 wherein said power control devices include digital circuitry and the power control parameters provided by the programmable event controller comprise digital control parameters.

7. The wireless communications apparatus of claim 2, further comprising a nonvolatile storage device coupled to said baseband processor, said nonvolatile storage device configured to store a plurality of different sets of instructions and band information for different regions of the world, one or more sets of which are downloadable to said memory device on said integrated circuit.

8. The wireless communications apparatus of claim 1 wherein said programmable event controller comprises a sequencer and said instructions comprise a predetermined sequence of instructions executable by the sequencer.

9. The wireless communications apparatus of claim 1 wherein said RF generating circuitry forms part of a polar modulator integrated in said integrated circuit.

10. An integrated circuit for a wireless communication system, comprising:

RF generating circuitry;

a programmable event controller coupled to said RF generating circuitry operable to control operational characteristics of said RF generating circuitry; and

a memory configured to store instructions executable by said programmable event controller, said instructions directing said programmable event controller how to control the operational characteristics of said RF generating circuitry, and configured to store control parameter data for use by said programmable event controller to configure the operational characteristics of the RF generating circuitry.

11. The integrated circuit of claim 10 wherein said RF generating circuitry comprises RF generating circuitry of a polar modulation transmitter.

12. The integrated circuit of claim 10 wherein said RF generating circuitry comprises RF generating circuitry of a multi-mode transmitter configurable by said programmable event controller to transmit according to various frequency bands or various wireless standards.

13. The integrated circuit of claim 10 wherein said instructions include instructions for directing the programmable event controller to change a power control setting of a power amplifier coupled to the RF generating circuitry.

14. The integrated circuit of claim 13 wherein said power control settings comprise power ramping information.

15. The integrated circuit of claim 10 wherein said instructions include instructions for directing the programmable event controller to provide a frequency control parameter to the RF generating circuitry.

16. The integrated circuit of claim 10 wherein said instructions include instructions for directing the programmable event controller to calibrate frequency determining devices of the RF generating circuitry.

17. The integrated circuit of claim 10 wherein said instructions include instructions for directing the programmable event controller to calibrate power setting devices formed in the integrated circuit.

18. The integrated circuit of claim 10 wherein said programmable event controller comprises a sequencer and said instructions comprise a predetermined sequence of instructions executable by the sequencer.

19. A method of controlling operational characteristics of a wireless communications device, comprising:

on a first integrated circuit, receiving a command or signal from a second integrated circuit;

retrieving frequency setting data corresponding to a frequency specified in said command or signal from a memory embedded in said first integrated circuit;

generating a frequency setting parameter from the frequency setting data retrieved from the memory; and

coupling the frequency setting parameter to a frequency determining device on said first integrated circuit.

20. The method of claim 19, further comprising:

retrieving power control data from the memory;

generating a power control parameter from the power control data retrieved from the memory; and

coupling the power control parameter to a power control device on said first integrated circuit.

21. The method of claim 19, further comprising:

retrieving power calibration data from the memory;

generating a power calibration parameter from the power calibration data retrieved from the memory; and

coupling the power calibration parameter to a power calibrating device on said first integrated circuit.

22. The method of claim 19, further comprising:

retrieving frequency calibration data from the memory;

generating a frequency calibration parameter from the frequency calibration data retrieved from the memory; and

coupling the frequency calibration parameter to a frequency calibrating device on said first integrated circuit.

23. The method of claim 19 wherein coupling the frequency setting parameter to a frequency determining device on said first integrated circuit further comprises using the frequency setting parameter to change a frequency output of a frequency determining device configured within a phase path of a polar modulator.

24. The method of claim 20 wherein coupling the power control parameter to the power control device on said first integrated circuit and/or on a second integrated circuit further comprises using the power control parameter to change a power output of a polar modulator power amplifier.