Method to calibrate RF paths of an FHOP adaptive base station
AssigneeTreble Investments Limited Liability Company
InventorsJohn R. Noll, Jeffrey W. Smith, Shannon Tomarchio, Brady Gaughan
Life of this patent
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Abstract
A base transceiver station including a transceiver unit is provided. A method of calibration uses a transceiver unit to receive an RF signal, measure a calibration value, and transmit the measured value. The calibration value is used to determine weighting parameters to compensate for relative RF path phase delay and amplitude variation.
Claims21
A method, comprising:
- receiving, by a transceiver unit, a RF signal transmitted from a base transceiver station (BTS);
- measuring, by the transceiver unit, a calibration value of the RF signal transmitted from the BTS;
- transmitting, by the transceiver unit, a calibration signal including the calibration value to the BTS;
- determining, by the BTS, weighting parameters using the calibration value to compensate for relative RF path phase delay and amplitude variation between a plurality of transmit apparatus chains;
- determining a relative difference in phase and amplitude between a reference transmit apparatus chain and each of the plurality of transmit apparatus chains;
- and
- calibrating an amplitude and phase of a transmit apparatus chain with the reference transmit apparatus chain until a substantially maximum nulling effect is achieved.
An article of manufacture including a non-transitory computer-readable medium having instructions stored thereon that, in response to execution by a computing device for calibration, cause the computing device to perform operations comprising:
- receiving, by the computing device, via a transceiver unit, a RF signal transmitted from a base transceiver station (BTS);
- measuring, by the computing device, a calibration value of the RF signal transmitted from the BTS;
- transmitting, by the computing device, a calibration signal including the calibration value to the BTS;
- determining, by the BTS, weighting parameters using the calibration value to compensate for relative RF path phase delay and amplitude variation between a plurality of transmit apparatus chains;
- determining a relative difference in phase and amplitude between a reference transmit apparatus chain and each of the plurality of transmit apparatus chains;
- and
- calibrating an amplitude and phase of a transmit apparatus chain with the reference transmit apparatus chain until a substantially maximum nulling effect is achieved.
A method for calibration by a transceiver unit, comprising:
- receiving a RF signal transmitted from a base transceiver station (BTS);
- measuring a calibration value of the RF signal transmitted from the BTS;
- transmitting a calibration signal including the calibration value to the BTS,
- wherein weighting parameters are determined using the calibration value to compensate for relative RF path phase delay and amplitude variation between a plurality of transmit apparatus chains;
- determining a relative difference in phase and amplitude between a reference transmit apparatus chain and each of the plurality of transmit apparatus chains;
- and
- calibrating an amplitude and phase of a transmit apparatus chain with the reference transmit apparatus chain until a substantially maximum nulling effect is achieved.
A non-transitory computer-readable medium storing executable instructions that, when executed, cause a computer to perform operations comprising:
- receiving a RF signal transmitted from a base transceiver station (BTS);
- measuring a calibration value of the RF signal transmitted from the BTS;
- transmitting a calibration signal including the calibration value to the BTS,
- wherein weighting parameters are determined using the calibration value to compensate for relative RF path phase delay and amplitude variation between a plurality of transmit apparatus chains;
- determining a relative difference in phase and amplitude between a reference transmit apparatus chain and each of the plurality of transmit apparatus chains;
- and
- calibrating an amplitude and phase of a transmit apparatus chain with the reference transmit apparatus chain until a substantially maximum nulling effect is achieved.
Dependencies are inferred from the claim text.