KR100270570B1 - Method for controlling device of r2 trunk in mobile communication exchange - Google Patents

Abstract

PURPOSE: A control method of a R2(Register 2) transit call managing device of a mobile communication exchange is provided to detect a signal detected from a remote station by an RTTA(R2 MFC(Multi-Frequency Compelled)/DTMF(Dual Tone Multi Frequency)/CCT(Continuity Check Tone), Audible Tone Transceiver), and to read a detected value by the RTTA for transmitting to a main processor. Therefore, it is possible to improve a processing speed of a TLSP(Time Switch and Local Service Processor), and to reduce an error generating rate. CONSTITUTION: If RTTAs(R2 MFC(Multi-Frequency Compelled)/DTMF(Dual Tone Multi Frequency)/CCT(Continuity Check Tone), Audible Tone Transceivers)(10) generate an event that a detection R2(Register 2) signal transmitted from a remote station is detected, a TLSP(Time Switch and Local Service Processor)(20) leads an inner buffer of a corresponding RTTA to read out valid data, and transmits the valid data to an MP(Main Processor) for reporting. The TLSP(20) stores the R2 signal requested from the MP in a self write buffer, and writes the stored valid data as the RTTAs(10).

Description

Method for controlling device of R2 trunk in mobile communication exchange}

The present invention relates to a mobile communication exchange, and more particularly, to a method for increasing the processing capacity and reducing the error rate by controlling an R2 signal handling device installed for interworking with a power station complying with the R2 signal standard in the mobile communication exchange.

In general, a mobile communication system is a communication system for a mobile device such as a person, a car, a ship, or an aircraft, and includes a personal communication system (PCS) system, a digital cellular system (DCS), and a digital frequency. Public communication system (DTRS, Digital Trunked Radio System) is used.

1 is a block diagram of a conventional R2 relay call handling device in such a mobile switching center.

As shown therein, 12 Universal Signaling Transceiver board Assemblies (USTAs) 1 for transmitting / receiving R2 signals during R2 (Register 2) relay calls; It was composed of a redundant service program (LSP) (Local Service Processor (LSP) 2) for controlling the signal processing of R2 by receiving a control program.

2 is a flowchart illustrating a method of transmitting and receiving a value of a conventional R2 relay call handling device.

As shown in the drawing, signals are read from twelve signal devices 1 and stored in a first buffer provided in the LSP 2, and a previously read signal is stored in the LSP ( A first step (ST1) (ST2) for transferring to a second buffer provided inside 2); After performing the first steps ST1 and ST2, if signals to be output to the twelve signal devices 1 are generated in the write buffer provided in the LSP 2, the signals are written from the write buffer. The second step ST3 was performed to read the data and write the data to the twelve signal devices 1.

3 is a flowchart illustrating a method of interpreting a transmitted value of a conventional R2 relay call handling device.

As shown therein, a search step of searching for a change in the extracted value by extracting a value corresponding to a corresponding channel from the first buffer and the second buffer of the first step ST1 and ST2 of FIG. ST11, ST12); If there is a change in the extracted value, the corresponding channel value of the first buffer is reported to the upper processor (ST13 to ST16).

The operation of the control method of the conventional R2 relay call handling device configured as described above will be described in detail with reference to the accompanying drawings.

First, the exchange plays a role of switching in conjunction with the control station, the other station and the other network. In addition, R2 (Register 2) represents a signal exchange method used to exchange signals with a power station, and is composed of a supervisory signal and an R2 MFC (Multi-Frequency Compelled) signal.

Twelve USTA (1) devices transmit and receive these R2 relay call signals to the power station. The LSP 2 is a Peripheral Processor (PP), which alternately reads signals from twelve USTAs 1 and writes signals to twelve USTAs (ST1−). ST3), this read and write operation is performed every 8 msec (ST4).

The operation of reading data from the twelve USTAs 1 reads data from the corresponding channel areas of the twelve USTAs 1 (ST1), and then reads previously read data into the LSP 2. The data transferred to the second buffer and stored are stored in the first buffer provided in the LSP 2 to update the first buffer and the second buffer (ST2).

At this time, an operation of writing data from the LSP 2 to 12 USTAs 1 may be performed. This write operation may be performed by writing 12 USTAs (1) from the write buffer provided in the LSP 2. ) Is sequentially written to the corresponding channel region (ST3).

On the other hand, the LSP 2 compares the values of the respective channels of the first buffer and the second buffer updated in ST2 and performs a routine for recognizing the change of the value every 16MSec (ST11 to ST16). At this time, if it is determined that there is a change in the value of the corresponding channel, the read data value is determined as the value of the signal detected by the USTA (1). The signal value determined as detected is transmitted to a main processor (MP) (ST11-ST13). Then, the values of the next channels corresponding to the first buffer and the second buffer are compared again (ST14 and ST15). This compares all channel values and checks for changes.

Here, the channel distinction in the LSP 2 is determined as shown in [Equation 1].

Channel = card_no × 16 (card_no = 0 ~ 11)

Each card has a channel number from 0 to 15, and channel identification is determined by device physical address identification. Therefore, when the LSP 2 writes and reads data to 12 USTAs 1, it can be distinguished according to which address of the USTA 1 is accessed.

However, in the prior art, the signals received from the power station are not interpreted by the USTA, but the signals received from the power station are transmitted to the LSP as they are, and the LSP is compared with the previous signal and the current signal received from the USTA to check whether there is a change. In other words, the processing speed is reduced, and the operation mode is complicated, thereby increasing the error rate.

Accordingly, the present invention has been proposed to solve the above conventional problems, and an object of the present invention is to receive from a large station in a plurality of R2 signal handling devices installed to interoperate with a large station that conforms to the R2 signaling standard in a mobile communication exchange. By analyzing the signal and transmitting the detection event to the time switch and local service processor (TLSP) when the signal is detected, the TLSP reads the signal only from the R2 signaling device where the detection event occurred. The present invention provides a control method of an R2 relay call handling device of a mobile communication switch that does not need to scan all the R2 signaling devices, thereby reducing the complexity of the control.

In order to achieve the above object, the control method of the R2 relay call device of the mobile communication switch according to the present invention,

When the RTTA generates an event that a detection R2 signal transmitted from a large station is detected, the Time Switch and Local Service Processor (TLSP) reads the valid data by reading the internal buffer of the corresponding RTTA, and then receives a main processor (MP). A read step of transmitting to and reporting the message;

The TLSP stores the R2 signal requested from the upper processor in its own light buffer, and then writes valid data stored in the light buffer to the plurality of RTTAs at the time of writing. .

1 is a block diagram of a device in charge of an R2 relay call of a conventional mobile communication switchboard;

2 is a flowchart illustrating a data transmission / reception method of a conventional R2 relay call handling device;

3 is a flowchart illustrating a method of interpreting a value transmitted from a conventional R2 relay call handling device;

4 is a block diagram of an R2 relay call handling device of a mobile communication switch to which the present invention is applied;

5 is a flowchart illustrating a control method of an R2 relay call responsible device of a mobile communication switch according to the present invention;

<Description of the code | symbol about the principal part of drawing>

10: RTTA 0 ~ 7 20: TSLP

Hereinafter, with reference to the accompanying drawings an embodiment according to the technical concept of the control method of the device for controlling the R2 relay call of the present invention configured as described above is as follows.

First, the present invention is to change the function of controlling this according to the structure change of the R2 signal handling device that sends and receives the R2 signal during the R2 relay call.

Figure 4 is a block diagram of the R2 relay call handling device and the next higher processor (TLSP) of the mobile communication switch to which the present invention is applied.

As shown in FIG. 2, R2 signals are transmitted / received during R2 (Register 2) relay calls, R2 Multi-Frequency Compelled (R2MFC), Dual Tone Multi Frequency (DTMF), Continuity Check Tone (CCT) Eight RTTAs (R2MFC / DTMF / CCT, Audible Tone Transceiver) 10 performing a test sound equipment) function; It is composed of a TLSP (Time switch and Local Service Processor, Time Switch and Signal Device Processor) 20 to control the signal processing of R2 by receiving a control program, which is configured as a redundancy and performs a time switch function.

5 is a flowchart illustrating a control method of an R2 relay call handling device of a mobile communication switch according to the present invention.

As shown in the figure, when the RTTA 10 generates an event indicating that a detection R2 signal transmitted from a large power is detected, the TLSP 20 reads the internal data of the corresponding RTTA 10 and reads the valid data. A read step (ST21-ST25) for transmitting and reporting to a processor (Main Processor) MP; After the TLSP 20 stores the R2 signal requested from the upper processor in its light buffer, writing the valid data stored from the light buffer to the plurality of RTTAs 10 at the time of writing (ST26-ST29) ).

In the read stages ST21-ST25, channel numbers and actual data that the RTTA 10 intends to transmit to the TLSP 20 are stored in pairs in the internal buffer of the RTTA 10.

In the write step (ST26-ST29), the TLSP 20 reads a pair of channel numbers and actual data of each RTTA 10 from its write buffer in pairs and writes them to the RTTA 10 regardless of the order.

Accordingly, the signal transmission / reception operation between the RTTA 10 and the TLSP 20 is performed as follows.

First, since there are eight RTTAs 10, the operation of reading and writing every 8 msec is performed on the eight RTTAs 10 (ST28).

In the read and write operations of the TLSP 20 performed for one 8 msec period, the read operation will be described first. When the first RTTA 10 and the last RTTA 10 are sequentially scanned, the data in the corresponding RTTA 10 is read. When a detection event occurs, the TLSP 20 reads the detection data from the internal buffer of the RTTA 10 and transmits the detected data to the upper processor for reporting (ST21-ST25).

At this time, the detection data read from the internal buffer of the RTTA 10 is composed of a pair of channel number and actual data. In the TLSP 20, a channel discrimination for distinguishing valid data read from each RTTA 10 is determined as shown in [Equation 2].

Channel = channel number (card_no) × 32 + read channel (card number = 0 ~ 7)

Thus, the channel number for each RTTA 10 has a value of 0 to 31, and when the value is transmitted from the TLSP 20 to the RTTA 10, the channel number in the RTTA 10 is changed and transmitted.

After the read operation is performed, the write operation is performed next. When the write operation is described, when the R2 signal is stored in the internal buffer of the TLSP 20 under the control of the upper processor MP (ST26), the TLSP 20 sets the access point to the rest of the channel / 32 at the time of writing, and writes the channel number for each card and the actual data (R2 signal) to eight RTTAs 10 in pairs regardless of order (ST27). ).

As described above, the present invention performs the change value recognition, which is conventionally detected by the software program of the LSP, in the RTTA which is hardware, and the data read during the 8msec read operation is recognized as the actually detected data. The TLSP control software then transfers this data directly to the higher processor (MP), which extracts data values read from the RTTA itself and writes only valid values to the higher processor.

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 control method of the R2 relay call handling device of the mobile communication switch according to the present invention does not detect the signal detected from the power station in the control software of the TLSP, but directly detects the detected value in the RTTA device. Since the data is read from the RTTA and transmitted to the upper processor, the processing speed of the TLSP is increased, the processing capacity is increased, and the operation mode is simplified, thereby reducing the probability of error occurrence.

Claims (4)

In the control method of the RTTA, which is a device in charge of the R2 relay call in the signaling device of the mobile communication switch having an RTTA that transmits / receives an R2 signal and performs an R2MFC, DTMF, and CCT function during an R2 relay call, When the RTTA generates an event that a detection R2 signal transmitted from a large station is detected, the Time Switch and Local Service Processor (TLSP) reads the valid data by reading the internal buffer of the corresponding RTTA, and then receives a main processor (MP). A read step of transmitting to and reporting the message; And after the TLSP stores the requested R2 signal in its own light buffer, writes valid data stored in the light buffer to the plurality of RTTAs at the time of writing. R2 relay call control device control method. The method of claim 1, The method of controlling the R2 relay call responsible device of the mobile communication switch, characterized in that the channel number and the actual data to be transmitted to the TLSP is stored in the internal buffer of the RTTA in the read step. The method of claim 1, wherein the writing step, And the TLSP reads a pair of channel numbers and actual data for each RTTA from its write buffer in pairs and writes the data to the RTTA regardless of the order. The method of claim 1, wherein the channel discrimination for distinguishing valid data comprises: Channel = channel number x 32 + read channel (card number = 0 ~ 7), each RTTA channel number has a value of 0 to 31, when the TLSP transmits a value to the RTTA channel in the RTTA The control method of the R2 relay call handling device of the mobile communication switch, characterized in that the transmission by changing the number.