Portable radio power control device and method using incrementally degraded received signals
First Claim
1. A radio having a receiver for receiving a down-link signal and having a transmitter for transmitting an up-link signal, the radio comprising:
- a. signal adjusting means for incrementally adjusting the received signal to produce a degraded signal having a predetermined signal quality, wherein each incremental degradation of the received signal produces a degraded signal having an adjustment parameter associated therewith;
b. detecting means for detecting the degraded signal having the predetermined signal quality, wherein the adjustment parameter associated with the degraded signal having the predetermined signal quality is a threshold adjustment parameter; and
c. means for determining the transmission power level for the radio based on the threshold adjustment parameter.
1 Assignment
0 Petitions
Accused Products
Abstract
A portable radio having a transmitter power controller connected to the portable radio'"'"'s receiver and transmitter for controlling the power transmission level of the portable radio, resulting in reduced power consumption by the portable radio and extended battery life. The transmitter power controller estimates the signal strength and quality of the down-link signal by determining a threshold adjustment parameter for the received signal. Thus, this invention eliminates false power adjustment caused by the interfering signals when RSSI (Received Signal Strength Level) is used as a means to estimate transmitter power level. The threshold adjustment parameter is an adjustment parameter used in adjusting the received signal to produce a degraded signal having a predetermined signal quality, and is determined by incrementally adjusting the received signal until the degraded signal is determined to have the predetermined signal quality. The received signal is adjusted in one embodiment by adding noise to the received signal and in another embodiment by adjusting the bias voltage of an RF amplifier and IF amplifier in the receiver. The threshold adjustment parameter corresponds to the signal strength and quality of the received signal, and a look-up table approach is used in determining and adjusting the power transmission level for the portable radio.
97 Citations
18 Claims
-
1. A radio having a receiver for receiving a down-link signal and having a transmitter for transmitting an up-link signal, the radio comprising:
-
a. signal adjusting means for incrementally adjusting the received signal to produce a degraded signal having a predetermined signal quality, wherein each incremental degradation of the received signal produces a degraded signal having an adjustment parameter associated therewith; b. detecting means for detecting the degraded signal having the predetermined signal quality, wherein the adjustment parameter associated with the degraded signal having the predetermined signal quality is a threshold adjustment parameter; and c. means for determining the transmission power level for the radio based on the threshold adjustment parameter. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
-
-
10. A method for receiving a down-link signal and for transmitting an up-link signal, the method comprising the steps of:
-
a. adjusting the received signal based on a selected adjustment parameter to produce a degraded signal; b. determining if the degraded signal has a predetermined signal quality; c. incrementally adjusting the selected adjustment parameter if the degraded signal does not have the predetermined signal quality; d. repeating steps 10a, 10b, and 10c to produce a degraded signal having the predetermined signal quality, wherein the selected adjustment parameter associated with the degraded signal having the predetermined signal quality is a threshold adjustment parameter; and e. determining the transmission power level for the radio based on the threshold adjustment parameter. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18)
-
Specification