System for dynamically controlling the gain of a repeater
View Patent ↗A repeater configured to dynamically affect the gain level of the repeater in response to the input signal power level over time. The repeater system includes a gain hold processor executing a gain hold algorithm. The gain hold algorithm preempts a large up-step in signal power level to follow a large down-step in signal power level. After a large up-step in input signal is detected, the system holds the gain level in response to a drop in input signal level after the large up-step. The gain is held at the level set by the large burst of input signal power to the repeater. In response to a larger up-step in signal power level, the system will lower the gain. In response to a large down-step in signal power after the larger up-step in signal power level, the system will hold the gain level of the repeater. During a prolonged low-power level or zero power signal at the input of the repeater, the system will slowly raise the gain level of the repeater over time.
1. A method of operating a cellular repeater having a variable-gain donor antenna adapted to communicate with a base station, and a server antenna adapted to communicate with a mobile device, the method comprising:
receiving, at the cellular repeater, a signal, the signal having an input signal power level, the input signal power level dynamically changing;
setting, at the cellular repeater, a gain of an amplifier to a predetermined first level, the amplifier configured to modify the input signal power level of the signal;
detecting, at the cellular repeater, an increase in the input signal power level of the signal during receipt, at the cellular repeater, of a first data burst;
dropping, at the cellular repeater and in response to the detecting, the gain of the amplifier from the predetermined first level to a second level less than the predetermined first level, the dropping of the gain of the amplifier being over one or more cycles of the signal;
holding the gain of the amplifier at the second level until receipt of a second data burst having the input signal power level: and
gradually increasing the gain of the amplifier from the second level to the predetermined first level in response to an expiration of a period of time during which no signal is received at the cellular repeater.
2. The method in accordance with claim 1 , wherein a data burst is defined by a predetermined burst time period.
3. The method in accordance with claim 2 , further comprising holding the gain of the amplifier in response to an increase to the input signal power level taking longer than the predetermined burst time period.
4. The method in accordance with claim 1 , wherein the second level is a predetermined level.
5. The method in accordance with claim 4 , wherein the predetermined second level is based on the input signal power level during a data burst.
6. A system comprising:
a cellular repeater having a variable-gain donor antenna adapted to communicate with a base station, and a server antenna adapted to communicate with a mobile device;
at least one programmable processor; and
a machine-readable medium storing instructions that, when executed by the at least one programmable processor, cause the at least one programmable processor to operate the cellular repeater to at least:
receive, at the cellular repeater, a signal having an input signal power level, the input signal power level dynamically changing; and
set, at the cellular repeater, a gain at the variable-gain donor antenna to a predetermined first level, an amplifier configured to modify the first input signal power level of a first signal;
detect, at the cellular repeater, an increase in the input signal power level of the signal during receipt of a first data burst;
drop, at the cellular repeater and in response to the detection, gain of the amplifier from the predetermined first level to a second level less than the predetermined first level, the drop of the gain of the amplifier being over one or more cycles of the signal;
hold the gain of the amplifier at the second level until receipt of a second data burst having the input signal power level; and
gradually increase the gain of the amplifier from the second level to the predetermined first level in response to an expiration of period of time during which no signal is received at the cellular repeater.
7. The system in accordance with claim 6 , wherein a data burst is defined by a predetermined burst time period.
8. The system in accordance with claim 7 , wherein the cellular repeater is further configured to at least hold the gain of the amplifier in response to an increase to the input signal power level taking longer than the predetermined burst time period.
9. The system in accordance with claim 6 , wherein the second level is a predetermined level.
10. The system in accordance with claim 9 , wherein the predetermined second level is based on the input signal power level during a data burst.
11. A system comprising:
a cellular repeater having a variable-gain donor antenna adapted to communicate with a base station, and a server antenna adapted to communicate with a mobile device, the cellular repeater receiving a signal having a dynamically-changing input signal power level; and
a gain hold processor comprising logic to dynamically control a gain of the received signal by the cellular repeater based on the input signal power level;
the gain hold processor being configured to at least:
set gain of an amplifier to a predetermined first level;
detect an increase in the input signal power level of the signal during receipt of a first data burst;
drop, at the cellular repeater and in response to detection, the gain of the amplifier from the predetermined first level to a second level less than the predetermined first level, the drop of the gain being over one or more cycles of the signal;
hold the gain of the amplifier at the second level until receipt of a second data burst having the input signal power level; and
gradually increase the gain of the amplifier from the second level to the predetermined first level in response to an expiration of a period of time during which no signal is received at the cellular repeater.
12. The system in accordance with claim 11 , wherein a data burst is defined by a predetermined burst time period.
13. The system in accordance with claim 12 , wherein the gain hold processor is further configured to at least hold the gain of the amplifier in response to an increase to the input signal power level taking longer than the predetermined burst time period.
14. The system in accordance with claim 11 , wherein the second level is a predetermined level.
15. The system in accordance with claim 14 , wherein the predetermined second level gain drop amount is based on the input signal power level during a data burst.