Method to calibrate RF paths of an FHOP adaptive base station
First Claim
Patent Images
1. 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.
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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.
16 Citations
21 Claims
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1. A method, comprising:
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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. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. 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:
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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. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19)
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20. A method for calibration by a transceiver unit, comprising:
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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.
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21. A non-transitory computer-readable medium storing executable instructions that, when executed, cause a computer to perform operations comprising:
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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.
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Specification