System And Method For Dynamically Improving Call Connection

• US 20080233885A1
• Filed: 03/04/2008
• Published: 09/25/2008
• Est. Priority Date: 03/20/2007
• Status: Active Grant

• Current Assignee: Skyworks Solutions Incorporated
• Original Assignee: Skyworks Solutions Incorporated
• Inventors: Agahi, Darioush, Govindswamy, Arumugam
• Granted Patent: US 7,970,427 B2
• Time in Patent Office: Days
• US Class Current: 455/69
• CPC Class Codes: H03G 3/3047 for intermittent signals, e.g. burst signals
• CPC Class Codes: H04W 52/146 Uplink power control
• CPC Class Codes: H04W 52/367 Power values between minimum and maximum limits, e.g. dynamic range
• CPC Class Codes: H04W 52/50 at the moment of starting communication in a multiple access environment

Abstract

A method for controlling an output of a power amplifier of a portable communication device includes determining a power level of a signal received at the portable communication device, generating a receive reference signal (RXLEV) that is indicative of the power level of the signal received at the portable communication device, and determining whether the receive reference signal is within a threshold value window. When the receive reference signal is within the threshold value window a nominal power output of a power amplifier in the portable communication device is transmitted during a random access channel signal transmission. When the receive reference signal is below the threshold value, a power output of the power amplifier in the portable communication device is increased during the random access channel signal transmission. When the receive reference signal is above the threshold value, a power output of the power amplifier in the portable communication device is decreased during the random access channel signal transmission.

Claims

1. A method for increasing an output of a power amplifier of a portable communication device, comprising:

determining a power level of a signal received at the portable communication device;

generating a receive reference signal (RXLEV) that is indicative of the power level of the signal received at the portable communication device;

determining whether the receive reference signal is below a threshold value; and

when the receive reference signal is below the threshold value, increasing a power output of a power amplifier in the portable communication device during a random access channel signal transmission.

2. The method of claim 1, further comprising increasing the power output of the power amplifier by a predetermined offset amount.

3. The method of claim 2, further comprising generating a power control level signal in a baseband circuit in response to the receive reference signal, the power control level signal including the predetermined offset amount and configured to set the power output of the power amplifier.

4. The method of claim 2, further comprising generating a power control level signal in a radio frequency (RF) circuit in response to the receive reference signal, the power control level signal including the predetermined offset amount and configured to set the power output of the power amplifier.

5. The method of claim 2, in which increasing the power output of the power amplifier by a predetermined offset amount allows the power output to increase within a power spectrum mask.

6. The method of claim 2, in which the predetermined offset amount is between −

1 dB and +1 dB.

7. A method for controlling an output of a power amplifier of a portable communication device, comprising:

determining a power level of a signal received at the portable communication device;

generating a receive reference signal (RXLEV) that is indicative of the power level of the signal received at the portable communication device;

determining whether the receive reference signal is within a threshold value window;

when the receive reference signal is within the threshold value window, transmitting a nominal power output of a power amplifier in the portable communication device during a random access channel signal transmission;

when the receive reference signal is below the threshold value, increasing a power output of the power amplifier in the portable communication device during the random access channel signal transmission; and

when the receive reference signal is above the threshold value, decreasing a power output of the power amplifier in the portable communication device during the random access channel signal transmission.

8. The method of claim 7, when the receive reference signal is above the threshold value, further comprising decreasing the power output of the power amplifier by a predetermined offset amount.

9. The method of claim 7, when the receive reference signal is below the threshold value, further comprising increasing the power output of the power amplifier by a predetermined offset amount.

10. The method of claim 9, further comprising generating a power control level signal in a baseband circuit in response to the receive reference signal, the power control level signal including the predetermined offset amount and configured to set the power output of the power amplifier.

11. The method of claim 9, further comprising generating a power control level signal in a radio frequency (RF) circuit in response to the receive reference signal, the power control level signal including the predetermined offset amount and configured to set the power output of the power amplifier.

12. The method of claim 9, in which increasing the power output of the power amplifier by a predetermined offset amount allows the power output to increase within a power spectrum mask.

13. The method of claim 9, in which the predetermined offset amount is between −

1 dB and +1 dB.

14. A portable transceiver having a system for increasing an output of a power amplifier of a portable communication device, comprising:

a transmitter and a receiver;

a receive level detection element associated with the receiver and configured to determine a power level of a signal received at the portable communication device, the receive level detection element also configured to generate a receive reference signal (RXLEV) that is indicative of the power level of the signal received at the portable communication device;

power control software configured to determine whether the receive reference signal is below a threshold value; and

a digital-to-analog converter (DAC) configured to increase a power output of a power amplifier during a random access channel signal transmission when the receive reference signal is below the threshold value.

15. The portable transceiver of claim 14, wherein the power output of the power amplifier is increased by a predetermined offset amount.

16. The portable transceiver of claim 15, further comprising a power control level signal generated by a baseband circuit in response to the receive reference signal, the power control level signal including the predetermined offset amount and configured to set the power output of the power amplifier.

17. The portable transceiver of claim 15, further comprising a power control level signal generated by a radio frequency (RF) circuit in response to the receive reference signal, the power control level signal including the predetermined offset amount and configured to set the power output of the power amplifier.

18. The portable transceiver of claim 15, in which increasing the power output of the power amplifier by a predetermined offset amount allows the power output to increase within a power spectrum mask.

19. The portable transceiver of claim 16, in which the predetermined offset amount is between −

1 dB and +1 dB.