KR100342688B1 - Apparatus for dual synthesizer card in mobile communication BTS - Google Patents

Abstract

The present invention provides a redundant synthesizer card device of a mobile communication base station, and the present invention comprises: a first four path distribution unit for receiving an input signal from the GPS of the base station and dividing it into four paths; First and second PLL synthesizer units configured to receive two signals from the signals distributed by the first four-path distribution unit, respectively, to perform a PLL synthesizer, and to operate redundantly so as to enable / disable a path according to an RFCA command; The first and second PLL synthesizer signals are respectively divided into four paths, and three paths are output to each sector, and the other one path is configured by second and third four path distribution parts that output the RFCA. It will be able to provide.

Description

Redundant synthesizer card device of mobile communication base station {Apparatus for dual synthesizer card in mobile communication BTS}

The present invention relates to a synthesizer card assembly (SNCA, Synthesizer Card Assembly) of a mobile communication base station, and in particular, to parallelize the PLL, VCO, and AMP for the redundancy of the SNCA connected two paths to the combiner, the path behind the combiner Connect three distributors to supply three signals, one for each sector, and the other to a radio frequency converter assembly (RFCA) to handle the path where the error occurred, so that it is suitable for providing uninterrupted service. A redundant synthesizer card device of a mobile communication base station.

In general, a mobile communication system is a communication system for a mobile device such as a person, a car, a ship, a train, an aircraft, and includes a mobile phone (mobile phone, a vehicle phone), a port phone, an aircraft phone, a mobile public phone (train, Cruise ships, express buses, etc.), radio calling, radiotelephony, satellite mobile communication, amateur radio, fishing service.

These mobile communications include the Advanced Mobile Phone Service (AMPS) system using analog methods, CDMA and TDMA (Time Division Multiple Access) systems using digital methods, and Frequency Division Multiple Access (FDMA) systems. System, etc.

1 is a block diagram of a base station in a general mobile communication system.

Reference numeral 1 is an SNCA for synthesizing a signal wirelessly transmitted from a base station, 20 is an analog-to-digital conversion assembly (ADCA) for converting analog data of each sector received from the SNCA 10 into digital, 30 Is a Radio Frequency Card Assembly (RFCA) for wirelessly transmitting data of the SNCA 10 and ADCA 20.

Thus, the conventional SNCA 10 receives a 10 MHz signal from a GPS (Global Positioning System) and performs a function of supplying a local signal to an up / down converter of a transceiver for each sector.

2 is a block diagram of a synthesizer card device of a conventional mobile communication base station.

As shown in the figure, a two-path distribution unit 11 for receiving a signal of 10MHz from the GPS and distributes it into two paths; A PLL (12) for receiving a output of the two-path distribution unit (11) to perform a phase locked loop (PLL) of 97.5 (142.5) MHz; A synthesizer PLL (13) which receives the output of the two-path distribution unit (11) and performs a synthesizer PLL of 756.7 ~ 781.5 * 1682.5 ~ 1712.5) MHz; The first and second third path distribution units 14 and 15 respectively receive outputs of the PLL 12 and the synthesizer PLL 13 and output signals for each sector.

As such, the conventional apparatus is configured to supply a local signal to all three sectors to one synthesizer PLL 13 within the SNCA 10.

However, this conventional technology has a problem in that if one synthesizer PLL does not operate, the entire three-sector transceiver will not operate and the service will be interrupted.

Therefore, the present invention has been proposed to solve the conventional problems as described above, the object of the present invention is to arrange the PLL, VCO, AMP in parallel for the redundancy of the SNCA and then connect the two paths to the coupler, the end of the combiner A redundant synthesizer card device of a mobile communication base station capable of providing an uninterrupted service by supplying three signals, one for each sector and one for RFCA by processing a path divider to process an abnormal path. To provide.

In order to achieve the above object, the redundant synthesizer card device of the mobile communication base station according to an embodiment of the present invention,

A first four path distribution unit which receives a signal from the GPS of the base station and divides the signal into four paths; First and second PLL synthesizer sections configured to receive two signals from the signals distributed by the first four path distribution unit, respectively, and perform a PLL synthesizer, and operate in a redundancy so as to enable / disable a path according to an RFCA command; ; The technical configuration of the first and second PLL synthesizer unit receives the signals of each of the four paths divided into four paths to output each sector and the remaining one path is composed of the second and third four-path distribution unit for outputting to the RFCA Features of the jacket.

1 is a block diagram of a general mobile communication base station,

2 is a block diagram of a synthesizer card device of a conventional mobile communication base station,

3 is a block diagram of a redundant synthesizer card device of a mobile communication base station according to the present invention.

<Description of Symbols for Main Parts of Drawings>

110, 140, 150: 4-path distribution section 120, 130: PLL synthesizer section

121, 122, 131, 132: IF PLL 123, 124, 133, 134: voltage controlled oscillator

125, 126, 135, 136: amplification part 127, 137: coupling part

Hereinafter, an embodiment according to the technical idea of the redundant synthesizer card device of the present invention as described above is as follows.

First, in order to realize the redundancy of the SNCA in the present invention, the PLL synthesizer part is composed of a PLL, a VCO (Voltage Controlled Oscillator), and an AMP (Amplifier), and one path is added to the plurality, and these two paths are 2 Tied to the path combiner. In order to monitor the SNCA output local signal, one port of the 4-path distributor was connected to the RFCA 20 to monitor power, and the command was transmitted from the RFCA to the amplifier to enable / disable the path.

3 is a block diagram of a redundant synthesizer card device of a mobile communication base station according to the present invention.

As shown therein, the first four path distribution unit 110 receives the signal from the GPS of the base station and divides it into four paths; First and second PLL synthesizers that receive two signals among the signals distributed by the first four-path distribution unit 110 and operate in redundancy so that the path is activated / deactivated according to the command of the RFCA 30. A second PLL synthesizer unit (120, 130); The second and second outputting signals of the first and second PLL synthesizer units 120 and 130, respectively, are divided into four paths, outputting three paths to each sector, and outputting the remaining one paths to the RFCA 30. It is composed of three four-path distribution unit 140, 150.

The first and second PLL synthesizer units 120 and 130 respectively receive IF PLLs 121, 122, and 131 that receive IF outputs from the first four path distribution unit 110 and perform IF PLLs. 132; A VCO (123) (124) (133) (134) for voltage-controlled oscillation of the output of the IF PLL (121) (122) (131) (132); Amplifiers 125, 126, and 135 for receiving and amplifying the outputs of the VCOs 123, 124, 133, and 134 and enabling the path to be activated / deactivated according to the command input from the RFCA 30. 136; Combination unit 127, 137 to combine the output of the amplifier 125, 126, 135, 136 to output to the second or third four-path distribution unit 140, 150. .

The operation of the redundant synthesizer card device of the mobile communication base station constructed as described above will be described in detail with reference to the accompanying drawings.

First, when a 10MHz reference signal for synchronization in GPS is input, the signal input through the first four-path distribution unit 110 is divided into four. These four divided signals are fed to a PLL synthesizer consisting of a PLL chip, VCO, AMP, and coupling.

One of the first and second PLL synthesizers 120, 130 is a primary and the other is a redundancy. In addition, when the first PLL synthesizer 120 is Primary, it generates a signal of a frequency required by the up converter and the down converter in the transceiver, respectively, and supplies it to the mixer in the up / down converter. At this time, the amplification part of the redundancy path is in a disabled state, and this path is in an inactive state.

If, for some reason, the RFCA 30 detects that the primary path does not work, the amplification unit 125, 126 of the primary path is disabled by the command of the RFCA 30, and the amplification unit 135 of the redundancy path is disabled. 136 is enabled to supply the local signal to the transceiver without interruption.

The signals of the primary / redundancy path are combined by the two path combiners 127 and 137, respectively, and the combined signals are output to the second and third four path distributors 140 and 150, respectively.

Then, the second and third four-path distribution units 140 and 150 supply the synthesized data to three sectors of alpha, beta, and gamma, respectively, and monitor the local signals of the output SNCA 10 output. A signal is output to the RFCA 30 through the other port.

Accordingly, the RFCA 30 monitors the signal output from the second or third four-path distribution unit 140 and 150, and when an abnormality occurs, immediately provides an Inable signal to the amplification unit of the redundancy path to provide continuous service without interruption of the system. It is possible to provide.

As such, the present invention arranges PLLs, VCOs, and AMPs in parallel for the redundancy of SNCA, and then connects two paths with a combiner, and connects a path divider at the rear of the combiner to supply three signals, one for each sector, and the other is an RFCA. By supplying it to the server, it will provide the service without interruption by performing the processing on the path where the error occurred.

Although the preferred embodiment of the present invention has been described above, the present invention may use various changes, modifications, and equivalents. It is clear that the present invention can be applied in the same manner by appropriately modifying the above embodiments. Accordingly, the above description does not limit the scope of the invention as defined by the limitations of the following claims.

As described above, the redundant synthesizer card device of the mobile communication base station according to the present invention implements a redundant structure of SNCA to improve the reliability of the entire transceiver highly dependent on the SNCA, and also to improve the reliability of the entire system, thereby enabling uninterrupted movement. There is an effect that can provide a communication service.

In addition, the present invention, if the SNCA is not redundant, the entire system will be inoperable and the service may be interrupted in case of an SNCA failure, and such service interruption will continue until the SNCA is replaced. In terms of being able to continue without service, there is a great industrial use effect.

Claims (2)

A first four path distribution unit which receives a signal from the GPS of the base station and divides the signal into four paths; First and second PLL synthesizer sections configured to receive two signals from the signals distributed by the first four path distribution unit, respectively, and perform a PLL synthesizer, and operate in a redundancy so as to enable / disable a path according to an RFCA command; ; Receiving the signals of the first and second PLL synthesizer sections, respectively, and distributing them into four paths, outputting three paths to each sector, and outputting the remaining one paths to the RFCA. Redundant synthesizer card device of mobile communication base station. The method of claim 1, wherein the first and second PLL synthesizer portion, respectively, An IF PLL which receives an output of the first four-path divider and performs an IF PLL; A VCO for voltage-controlled oscillation of the output of the IF PLL; An amplifying unit configured to receive and amplify the output of the VCO, and to enable / disable a path according to a command inputted from the RFCA; And a combiner for combining the output of the amplifier and outputting the output to the second or third four-path distribution unit.