Interference cancellation repeater

Patent metadata

Field	Value
Publication number	US-10404352-B2
Application number	US-201515540774-A
Country	US
Kind code	B2
Filing date	Dec 21, 2015
Priority date	Dec 30, 2014
Publication date	Sep 3, 2019
Grant date	Sep 3, 2019

Abstract

According to an aspect of the inventive concept, there is provided an interference cancellation repeater includes: a signal transceiver configured to cancel an interference signal from an RF input signal and to output an RF output signal from which the interference signal has been canceled; and a controller configured to control a power mode of the signal transceiver by measuring traffic of a first signal in the signal transceiver.

First claim

The invention claimed is:

1. An interference cancellation repeater comprising:
a signal transceiver which includes:
a receiver configured to analog-to-digital convert a RF input signal to generate a digital input signal;
an interference canceller implemented with at least one processor and configured to cancel an interference signal from the digital input signal to generate a restored input signal; and
a transmitter configured to digital-to-analog convert the restored input signal, and amplify the converted restored input signal to generate and output an RF output signal; and

a controller which includes at least one processor to implement:
a traffic measurer configured to compare a power level of a first signal in the signal transceiver with a reference power level to generate traffic information; and
a power controller configured to control a power mode of the signal transceiver based on the traffic information,

wherein the power mode includes a normal mode and a sleep mode in which power consumption of the signal transceiver is less than that in the normal mode, and
wherein the power controller, in the sleep mode, is configured to reduce a gain of each of the receiver and the interference canceller, turn off the transmitter, or reduce a gain of each of the receiver and the interference canceller and turn off the transmitter.

2. The interference cancellation repeater of claim 1 , wherein
the power controller is configured to change the normal mode to the sleep mode when a high-level of the traffic information is not detected during a first monitoring time in the normal mode.

3. The interference cancellation repeater of claim 2 , wherein
the power controller is configured to change the sleep mode to the normal mode when the high-level of the traffic information is detected during a second monitoring time in the sleep mode.

4. The interference cancellation repeater of claim 3 , wherein
the first monitoring time is longer than the second monitoring time.

5. The interference cancellation repeater of claim 1 , wherein
the first signal is the restored input signal.

6. An interference cancellation repeater, comprising:
a signal transceiver configured to cancel an interference signal from an RF input signal received from a terminal and to output an RF output signal from which the interference signal has been canceled to a base station; and
a controller configured to control a power mode of the signal transceiver by monitoring traffic based on a first signal in the signal transceiver,
wherein the power mode includes a normal mode and a sleep mode in which power consumption of the signal transceiver is less than that in the normal mode, and
wherein the controller includes at least one processor to implement:
a traffic measurer configured to compare a power level of the first signal with a reference power level to generate traffic information on whether traffic is generated; and
a power controller configured to control the power mode of the signal transceiver based on the traffic information and a predicted sleep time for each predetermined period that is determined by accumulating the traffic information.

7. The interference cancellation repeater of claim 6 , wherein
the power controller is configured to change the normal mode to the sleep mode when a high-level of the traffic information is not detected during a first monitoring time in the normal mode.

8. The interference cancellation repeater of claim 6 , wherein
the power controller is configured to set the power mode to the sleep mode at the predicted sleep time, and to change the sleep mode to the normal mode when a high-level of the traffic information is detected during a second monitoring time in the set sleep mode.

9. An interference cancellation repeater comprising:
a signal transceiver configured to cancel an interference signal from an RF input signal and to output an RF output signal from which the interference signal has been canceled; and
a controller configured to control a power mode of the signal transceiver by monitoring traffic based on a first signal in the signal transceiver,
wherein the controller includes at least one processor to implement:
a traffic measurer configured to compare a power level of the first signal in the signal transceiver with a reference power level to generate traffic information; and
a power controller configured to control a power mode of the signal transceiver based on the traffic information,
wherein the power mode includes a normal mode and a sleep mode in which power consumption of the signal transceiver is less than that in the normal mode,
wherein the power controller is configured to change the normal mode to the sleep mode when a high-level of the traffic information is not detected during a first monitoring time in the normal mode,
wherein the power controller is configured to change the sleep mode to the normal mode when the high-level of the traffic information is detected during a second monitoring time in the sleep mode, and
wherein the interference cancellation repeater further comprises a modem that communicates with a management server, and at least one of the first monitoring time and the second monitoring time is determined according to control of the management server through the modem.

10. An interference cancellation repeater comprising:
a signal transceiver configured to cancel an interference signal from an RF input signal and to output an RF output signal from which the interference signal has been canceled; and
a controller configured to control a power mode of the signal transceiver by monitoring traffic based on a first signal in the signal transceiver,
wherein the controller includes at least one processor to implement:
a traffic measurer configured to compare a power level of the first signal in the signal transceiver with a reference power level to generate traffic information; and
a power controller configured to control a power mode of the signal transceiver based on the traffic information,
wherein the power mode includes a normal mode and a sleep mode in which power consumption of the signal transceiver is less than that in the normal mode,
wherein the power controller is configured to change the normal mode to the sleep mode when a high-level of the traffic information is not detected during a first monitoring time in the normal mode,
wherein the power controller is configured to change the sleep mode to the normal mode when the high-level of the traffic information is detected during a second monitoring time in the sleep mode, and
wherein at least one of the first monitoring time and the second monitoring time is determined according to control of a local terminal connected to the interference cancellation repeater in a wired or wireless manner.

11. An interference cancellation repeater comprising:
a signal transceiver configured to cancel an interference signal from an RF input signal and to output an RF output signal from which the interference signal has been canceled; and
a controller configured to control a power mode of the signal transceiver by monitoring traffic based on a first signal in the signal transceiver,
wherein the controller includes at least one processor to implement:
a traffic measurer configured to compare a power level of the first signal in the signal transceiver with a reference power level to generate traffic information; and
a power controller configured to control a power mode of the signal transceiver based on the traffic information,
wherein the power mode includes a normal mode and a sleep mode in which power consumption of the signal transceiver is less than that in the normal

Assignees

• Solid Inc
• Solidsystems Co Ltd

Inventors

• Kim Hyunchae

Classifications

• H04W52/343

  taking into account loading or congestion level · CPC title

• H04B7/15578 Primary

  by gain adjustment · CPC title

• H04B7/15507

  Relay station based processing for cell extension or control of coverage area, (network planning with network coordinated processing with regard to cell extension H04W16/26; network topologies using dedicated repeater stations H04W84/047; terminal devices adapted for relaying to or from an other terminal H04W88/04) · CPC title

• H04B7/15585 Primary

  by interference cancellation · CPC title

• H04W52/243

  taking into account interferences · CPC title