METHOD FOR CONTROLLING TRANSMISSION/RECEPTION TIMING OF BASE STATION ANTENNA FOR TDD WIRELESS COMMUNICATIONS AND BASE STATION ANTENNA USING THE SAME
First Claim
1. A method for controlling a transmission/reception timing of a Base Station (BS) antenna for Time Division Duplexing (TDD) wireless communications, the method comprising:
- separating a control signal and a Radio Frequency (RF) signal from a modulated signal received from a Base Transceiver Station (BTS);
monitoring a TDD synchronization signal from the received modulated signal;
checking a periodic RF signal from downlink transmission and uplink reception RF signals;
calculating an error between the TDD synchronization signal and the periodic RF signal; and
outputting a transmission/reception switching control signal according to the error.
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Accused Products
Abstract
A method for controlling a transmission/reception timing of a BS antenna for TDD wireless communications is provided, in which a control signal and an RF signal are separated from a modulated signal received from a BTS, a TDD synchronization signal is monitored from the received modulated signal, a periodic RF signal is checked from downlink transmission and uplink reception RF signals, an error between the TDD synchronization signal and the periodic RF signal is calculated, and a transmission/reception switching control signal is output according to the error.
15 Citations
20 Claims
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1. A method for controlling a transmission/reception timing of a Base Station (BS) antenna for Time Division Duplexing (TDD) wireless communications, the method comprising:
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separating a control signal and a Radio Frequency (RF) signal from a modulated signal received from a Base Transceiver Station (BTS); monitoring a TDD synchronization signal from the received modulated signal; checking a periodic RF signal from downlink transmission and uplink reception RF signals; calculating an error between the TDD synchronization signal and the periodic RF signal; and outputting a transmission/reception switching control signal according to the error. - View Dependent Claims (2, 3, 4, 5)
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6. A Base Station (BS) antenna device for Time Division Duplexing (TDD) wireless communications, comprising:
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a signal separator for separating a Radio Frequency (RF) signal, a control signal for antenna control, and an operation power from a signal received from a Base Transceiver Station (BTS); a division/phase shift module for dividing the RF signal received from the signal separator, shifting a phase of each of the divided signals according to a phase control signal, and outputting the phase-shifted signals to a reception signal amplifier; a coupler for generating a signal coupled with the signal received from the BTS or the separated RF signal in an RF signal path; an RF detector for detecting the RF signal from the coupled signal; a converter for receiving the operation power from the signal separator and providing the operation power to the reception signal amplifier; the reception signal amplifier connected to a radiation element of the BS antenna, for amplifying an uplink signal received from the radiation element and outputting the amplified uplink signal; and a Main Control Module (MCM) for receiving the control signal and the operation power from the signal separator, monitoring a TDD synchronization signal from the control signal, checking a periodic RF signal from the RF signal detected by the RF detector, calculating an error between the TDD synchronization signal and the periodic RF signal, outputting a transmission/reception switching control signal according to the error, and outputting the phase control signal according to the status of the RF signal. - View Dependent Claims (7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification