KR20030052778A - Transceiver redundancy change apparatus and method for mobile communication system - Google Patents

Abstract

PURPOSE: A method for converting a transceiver redundancy of a mobile communication system is provided to exclude standby time and response time caused when converting into a redundancy transceiver owing to a failure of a transceiver, thereby supplying a stable service. CONSTITUTION: Many transceivers convert IF signals into RF signals to transmit the RF signals, or convert the RF signals into the IF signals to transmit the IF signals. If one of the transceivers has a failure, a redundancy transceiver is replaced as the transceiver. A base station controller transceives a command signal and a response signal for performing mobile phone registration, control and traffic control assignment, handoff, call setup, and call completion in cells by the transceivers, the redundancy transceiver, and a base station. The base station controller transmits an Ack_Dis signal to all the transceivers to remove a response signal of a transceiver for the command signal, if the transceiver has a failure. A shared control bus consists of a transceiving line for transceiving data between the transceivers and the redundancy transceiver and an Ack_Dis signal line for cutting off the response signal for the command signal.

Description

Transceiver Redundancy Switching Device and Method for Mobile Communication System TECHNICAL FIELD

The present invention relates to an apparatus and method for switching transceiver redundancy in a mobile communication system, and in particular, due to a failure of the transceiver, to improve service by eliminating the waiting time and response time that occurs when switching the faulty transceiver to the redundant transceiver. The present invention relates to a transceiver redundancy switching device and a method of a mobile communication system.

If the mobile communication system requires high reliability, in the case of a device which becomes out of service due to a failure of the device, the mobile communication system continues to provide a service without disconnection through a redundant or redundant device.

In general, a mobile communication system (particularly, a personal mobile communication system (PCS)) configures a base station by sectorizing one cell radius into three alpha, beta, and gamma to perform a service.

1 is a block diagram showing the configuration of a transceiver redundancy switching device of a conventional mobile communication system, which is responsible for the capacity of 3 sectors 2FA, converts an IF signal into an RF signal for a forward link, and transmits a reverse signal for a reverse link. Six transceivers for converting and receiving an RF signal into an IF signal; A high frequency switch unit which is switched to transmit the RF signal output from the six transceivers through a corresponding transmission antenna, and which is switched to apply an RF signal input through a reception antenna to the corresponding transceiver; A redundancy transceiver that replaces the transceiver if any one of the six transceivers fails; A base station controller transmits and receives signals for mobile phone registration, control and traffic control assignment, handoff execution, call setup, and termination by a base station to all transceivers through a shared control bus.

The high frequency switch unit includes: a transmission redundancy switch that is switched to transmit an RF signal output from the redundant transceiver through a corresponding sector switch when an arbitrary transceiver fails; A plurality of dividers for distributing an RF signal input through a receiving antenna to a receiving redundancy switch and a corresponding transceiver; If any transceiver fails, it consists of a receiving redundancy switch that is switched to apply the RF signal of the divider to the redundant transceiver, and the operation of such a conventional apparatus will be described.

First, the base station controller transmits and receives signals to all transceivers through a shared control bus to perform mobile phone registration, control and traffic control assignment, handoff execution, call setup and termination processing in the cell by the base station.

First, the transceiver converts an IF signal output from the base station controller into a RF signal for a forward link and transmits the RF signal through a high frequency switch unit and an antenna, and conversely, receives a RF signal through the high frequency switch unit for a reverse link. After converting the signal into an IF signal and receiving the signal, the IF signal is transmitted to the base station controller through the shared control bus.

If any one of the transceivers fails, the redundant transceiver replaces the failed transceiver and transmits and receives data.

Here, when the operation of the high frequency switch unit is described in detail, the transmission redundancy switch is switched to transmit an RF signal output from the redundancy transceiver through the corresponding sector switch when an arbitrary transceiver fails. When the transceiver of the failure occurs, the RF signal of the release divider is applied to the redundancy transceiver.

Here, the divider distributes the RF signal input through the reception antenna to the reception redundancy switch and the corresponding transceiver.

The control method applied to the transceiver of the mobile communication system uses a method in which one base station controller shares one control bus in order to control a plurality of transceivers.

At this time, since the plurality of transceivers and the base station controller share a single control bus, there must be a time appointment between the base station controller and each transceiver, which will be described with reference to FIG.

First, the base station controller may send a command signal to one transceiver, and since the transceiver shares the control bus, the base station controller executes another command when a response signal of the transceiver is received to perform a collision on the shared control bus. prevent.

If the base station controller transmits a command to a specific transceiver but there is no response from the transceiver, the base station controller must wait for the waiting time, which is the response time limit of the transceiver, to execute a different command to prevent a collision on the shared control bus. do.

3 shows a method of switching to a redundant transceiver when a failure occurs at the transceiver '1' and is not normally operated.

If transceiver '1' fails, the base station controller sends an isolation command to transceiver '1' to disable all transmit and receive signals on transceiver '1'.

Here, as shown in (a) of FIG. 3, a response signal from the transceiver '2' is received by the base station controller with respect to the command signal in progress at the transceiver '2', or as shown in FIG. Even if no response signal is generated for the command, when the waiting time has elapsed, the base station controller applies a command to the redundant transceiver to initialize the same information as the failed transceiver, and the redundant transceiver applies the completion of initialization to the base station controller.

Thereafter, the base station controller controls the RF switch unit to continue the service using the redundancy transceiver.

At this time, when the transceiver fails, the switching to the redundant transceiver should be completed in a short time which is not recognized by the user in the normal service state, but when the bus cycle on the control bus is not completed as shown in FIG. After waiting a considerable time, the switching must be performed, which causes a problem such as a short circuit of a voice call in service or a noise in quality.

The present invention has been made to solve the above problems, and due to the failure of the transceiver, the mobile communication system to improve the service by eliminating the waiting time and response time that occurs when switching the faulty transceiver to the redundant transceiver Its purpose is to provide a method for switching transceiver redundancy.

1 is a block diagram showing a configuration of a transceiver redundancy switching device of a conventional mobile communication system.

Figure 2 is a schematic diagram showing the operation flow for the transceiver redundancy switching method of a conventional mobile communication system.

Figure 3 is a schematic diagram showing a transceiver redundancy switching method in Figure 2;

4 is a block diagram showing the configuration of a transceiver redundancy switching device of the present invention mobile communication system.

Figure 5 is a schematic diagram showing the operation flow for the transceiver redundancy switching method of the present invention mobile communication system.

According to an aspect of the present invention, a plurality of transceivers convert an IF signal into an RF signal and transmit or convert an RF signal into an IF signal; A redundancy transceiver that is replaced with one of the plurality of transceivers if a failure occurs; Send and receive command signals and response signals for mobile phone registration, control and traffic control allocation, handoff, call setup and termination processing by the plurality of transceivers and redundant transceivers and base stations, and to any transceiver. A base station controller for transmitting to the transceivers an Ack_Dis signal for removing a response signal of the transceiver to the command signal when a failure occurs; And a shared control bus including a transmission / reception line for transmitting and receiving data between the base station controller and the plurality of transceivers and a redundant transceiver, and an Ack_Dis signal line for blocking a response signal for a command signal currently in progress.

The present invention for achieving the above object, the base station controller, the first step of sequentially transmitting a command signal for transmitting and receiving data from the upper transceiver to the lower transceiver, and receiving the corresponding response signal from the transceiver; A second process of generating a command signal for isolating the transceiver if any transceiver fails; A third step of transmitting an Ack_Dis signal to all transceivers below the failed transceiver to delete the response signal; According to a switch switching signal of the base station controller, it performs a fourth process of switching the faulty transceiver to the redundant transceiver.

Hereinafter, with reference to the accompanying drawings, the operation and effects of the transceiver redundancy switching apparatus and method of the mobile communication system according to the present invention will be described in detail.

4 is a block diagram showing the configuration of the transceiver system for switching the transceiver redundancy of the present invention. As shown in FIG. 4, a plurality of receivers converting IF signals into RF signals or transmitting RF signals into IF signals are received. A transceiver; A redundancy transceiver that is replaced with one of the plurality of transceivers if a failure occurs; Send and receive command signals and response signals for mobile phone registration, control and traffic control allocation, handoff, call setup and termination processing by the plurality of transceivers and redundant transceivers and base stations, and to any transceiver. A base station controller for transmitting to the transceivers an Ack_Dis signal for removing a response signal of the transceiver to the command signal when a failure occurs; And a shared control bus comprising a transmission / reception line for transmitting and receiving data between the base station controller and the plurality of transceivers and a redundant transceiver, and an Ack_Dis signal line for blocking a response signal for a command signal currently in progress. Describe the operation.

First, the base station controller transmits and receives signals to all transceivers through a shared control bus to perform mobile phone registration, control and traffic control assignment, handoff execution, call setup and termination processing in the cell by the base station.

First, the transceiver converts an IF signal output from the base station controller into a RF signal for a forward link and transmits the RF signal through a high frequency switch unit and an antenna, and conversely, receives a RF signal through the high frequency switch unit for a reverse link. After converting the signal into an IF signal and receiving the signal, the IF signal is transmitted to the base station controller through the shared control bus.

If any one of the transceivers fails, the redundant transceiver replaces the failed transceiver and transmits and receives data.

At this time, the base station controller, if a failure occurs in the arbitrary transceiver, after applying a command signal for isolation to the failure transceiver, and transmits the Ack_Dis signal for sequentially removing the response signal of the transceiver to the lower transceiver to the lower transceiver By removing the response signal generated from the lower transceiver.

The Ack_Dis signal is generated with a high potential for a predetermined time to remove all response signals generated by the transceiver.

Thereafter, the base station controller controls the high frequency switch unit and transmits the faulty transceiver to the redundant transceiver.

In more detail, the present invention will be described with reference to FIG. 5. In the base station controller, a command signal for transmitting / receiving data from an upper transceiver to a lower transceiver is sequentially transmitted and a corresponding response signal is received from the corresponding transceiver.

If any transceiver fails, the base station controller sends a command signal to isolate the faulty transceiver to isolate the faulty transceiver.

Subsequently, the base station controller transmits the Ack_Dis signal through the Ack_Dis line to all the transceivers below the failed transceiver, deletes the response signal, and controls the switching of the high frequency switch to switch the faulty transceiver to the redundant transceiver. Perform normal operation.

The specific embodiments or examples made in the detailed description of the present invention are for the purpose of clarifying the technical contents of the present invention only, and should not be construed as limited to these specific embodiments by consultation, and the spirit of the present invention and the claims Various changes can be made within the scope of.

As described in detail above, the present invention has the effect of providing a stable service by excluding the waiting time and response time that occur when switching to the redundant transceiver due to the failure of the transceiver.

Claims (4)

A plurality of transceivers for converting and transmitting an IF signal into an RF signal or for converting and receiving an RF signal into an IF signal; A redundancy transceiver that is replaced with one of the plurality of transceivers if a failure occurs; Send and receive command signals and response signals for mobile phone registration, control and traffic control allocation, handoff, call setup and termination processing by the plurality of transceivers and redundant transceivers and base stations, and to any transceiver. A base station controller for transmitting to the transceivers an Ack_Dis signal for removing a response signal of the transceiver to the command signal when a failure occurs; And a shared control bus including a transmission / reception line for transmitting and receiving data between the base station controller and the plurality of transceivers and a redundant transceiver, and an Ack_Dis signal line for blocking a response signal for a command signal currently in progress. Transceiver Redundancy Switching System. 2. The apparatus of claim 1, wherein the Ack_Dis signal is generated with a high potential for a predetermined time to remove all response signals generated from the lower transceiver. 2. The apparatus of claim 1, wherein the base station controller controls to replace the failing transceiver with a redundant transceiver after removing all response signals. A first step of sequentially transmitting, at a base station controller, a command signal for transmitting and receiving data from an upper transceiver to a lower transceiver, and receiving a response signal from the corresponding transceiver; A second process of generating a command signal for isolating the transceiver if any transceiver fails; A third step of transmitting an Ack_Dis signal to all transceivers below the failed transceiver to delete the response signal; And a fourth process of switching the faulty transceiver to the redundant transceiver by a switch switching signal of the base station controller.