KR20000008946A - Call test device and method in personal communication system - Google Patents

Abstract

PURPOSE: A device and method are provided to test a call by only exchange without a base transceiver station(BTS) in a personal communication service. CONSTITUTION: A personal communication system exchange(400) comprises access switching subsystems having a subscriber and trunk line matching function, a central control subsystem(480) having a system control and operating function, and an interconnection network subsystem(440) connecting these two systems with each other. A first access switching subsystem-wireless(410, ASS-W) comprises a simulator(412) which provides a call processing function of the BTS, a first signalling connection control part(414, SCCP) which discriminates whether a first message transfer part(416, MTP) is normal or not, and the first MTP which transfers a signal. A second ASS-W(450) comprises a second MTP(456) which is connected to the first MTP, a second SCCP(454) which discriminates whether the second MTP is normal or not, and an application part(452) which provides a call processing function of the exchange. The first ASS-W and the second ASS-W are set to an imaginary BTS and exchange, respectively. Then, the first ASS-W is connected to the second ASS-W, and a call between them is set or cancelled.

Description

Call Test Apparatus and Method for Personal Mobile Communication System

The present invention relates to an apparatus and method for enabling a call test regardless of a base transceiver station (BTS) 200 in a personal communication service (PCS) mobile communication switch.

In the prior art, the configuration of a system for a personal mobile communication service is as follows. 1 is a configuration diagram of a personal mobile communication service system, and FIG. 2 is a configuration diagram of a conventional exchange. The mobile communication service system is configured as a wireless communication path together with a terminal (Personal Station: PS) 100, and further includes a base station 200 that performs a function of managing radio resources. In addition, the system further includes a base station controller (BSC) 300 that performs radio link and wire link control functions. The system also includes an operation maintenance center 500 and a home location register (HLR) 600 and an exchange 400 that perform various information storage and location registration of subscribers. The exchange 400 refers to the information of the home location register 600 so that the subscriber of the mobile telephone connected through the base station 200 can talk to another subscriber. However, it is responsible for connecting with other exchanges if necessary.

Therefore, it can be seen that the function of the exchange 400 begins by the base station 200. Here, the switch 400, to which the base station 200 is not connected, cannot be tested. In practice, however, there are fixed telephones connected to fixed lines for special applications. Some tests are also possible with fixed telephones. However, the test associated with the base station 200 is not possible. In addition, there is a limit to the number of terminals 100 when the call is tested by the terminal 100. Therefore, the load of the exchange 400 could not be measured. As a result, there is a problem that it is not possible to know how much call can be handled by how much load.

2 is a configuration diagram of the exchange 400. In FIG. 2, the inter-connection exchange subsystem (virtual base station) 410, the inter-subscriber connection exchange subsystem 420, the subscriber or relay connection exchange subsystem 430, the interconnect network subsystem 440, the inter-radio A connection exchange subsystem 450, a connection exchange subsystem 460 for signaling services between exchanges, a relay connection exchange subsystem 470, and a central control unit 480.

SUMMARY OF THE INVENTION The present invention has been made to solve the problems of the prior art operating as described above, and an object thereof is to provide an apparatus and method for testing a call with only a switch without a base station in a personal mobile communication service.

Other objects and advantages of the present invention will become more apparent from the following detailed description of the invention and the accompanying drawings.

1 is a configuration diagram of a personal mobile communication service system.

2 is a block diagram of a conventional exchanger.

3 is a modified system for testing with existing systems in the present invention.

4 is a system configuration diagram of an apparatus and method for call testing of a personal mobile communication system according to the present invention;

5 is a flow chart according to the present invention.

6 is a message flow diagram from the base station to the exchange processing in accordance with the existing provisions for call setup procedure.

7 is a message flow diagram from an exchange to a base station processed in accordance with the existing provisions for call setup procedures.

8 is a message flow diagram from the base station to the switching center processed according to the existing provisions for call release procedure.

9 is a message flow diagram from an exchange to a base station processed in accordance with the existing provisions for call release procedure.

<Explanation of symbols for the main parts of the drawings>

100: Terminal (PS)

200 ,: Base Transceiver Station (BTS)

300,302,304: Base Station Controller (BST)

400,402,404: Personal Communication Switch

(Personal Communication system eXchange: PCX)

410: Access Switching Subsystem-Wireless

ASS-W) (virtual base station)

412: simulator

414,454: Signaling Connection Control Part (SCCP)

416,456: Message Transfer Part (MTP)

420: Access Switching Subsystem-Suscriber (ASS-S)

430: Subscriber or relay connection exchange subsystem

(Access Switching Subsystem-Suscriber / Trunk: ASS-S / T)

440: Interconnection Network Subsystem (INS)

450: Wireless connection exchange subsystem (virtual base station)

(Access Switching Subsystem-Wireless: ASS-W)

452: Application Part (AP)

460: Access switching subsystem for signaling service between switching stations (Access Switching Subsystem-CCS No. 7: ASS-7)

470: Access Switching Subsystem-Trunk (ASS- T)

480: Central Control Subsystem (CCS)

500: Operating Maintenance Center (OMC)

600: Home Location Register (HLR)

700: Public Switched Telephone Network (PSTN)

800: Public Land Mobile Network (PLMN)

According to an embodiment of the present invention, which is designed to achieve the above object, a preferred embodiment of an apparatus for performing a call test without a base station only in a personal mobile communication service is provided.

Connection exchange subsystem 430 with subscriber and relay line matching function, central control unit 480 with system control and operation and maintenance functions, and interconnect network subsystem providing interworking functions of the two systems. In the switch 400 of the personal mobile communication service consisting of 440,

Comprised of a simulator 412 for providing a call processing function of the base station, a first signal connection controller 414 for checking whether the first message transmitter 416 is abnormal, and a first message transmitter 416 for transmitting a signal. A first inter-connection exchange subsystem (410);

Application for providing a call processing function of the second signal connection controller 454 and the switching station to check whether the second message 456 and the second message 456 connected to the first message transmitter 416 are abnormal. And a second wireless access exchange subsystem 450 comprised of a portion 452.

According to the present invention for achieving the above object, a preferred embodiment of the call test method of the personal mobile communication system, the application unit 452, the signal connection control unit 454, 414 and the message transmission unit 416 ( 1. A switch system 400, comprising a plurality of inter-connection exchange subsystems 402, 404, 410, 450, consisting of 456.

Setting the first inter-connection exchange subsystem 410 as a virtual base station 200;

Setting the second inter-connection exchange subsystem 450 to the exchange system 400;

Connecting the first inter-connection exchange subsystem 410 and the second inter-connection exchange subsystem 450; And

And performing call establishment and call release between the first inter-connection exchange subsystem 410 and the second inter-connection exchange subsystem 450.

In the embodiment of the present invention, the setting of the virtual base station 410, it is preferable to change the signal point of the inter-connection exchange subsystem 410 to be used as the base station 410,

In the virtual base station 410, after processing in the simulator 412 as if the data signal is processed in the actual base station 200, the signal connection control unit 414 to check whether the signal is abnormal. ) Transmit the message to the message transmission unit 416 below, and if there is no abnormality after signal comparison, it is preferable to transmit data by inserting the head data.

In the switch 450, the transmitted signal is sent to the message transmission unit 456 and the signal connection control unit 454 in the self, it is preferable to transmit the signal from the application unit 452,

The call setup and call release is preferably performed between the virtual base station 410 and the switching center 450.

For reference, times and cases in the present invention are as follows. Sometimes, when a large number of calls are made, the value of the load is determined. In addition, there may be a case in which the performance of the exchange 400 may be processed depending on the load difference. Otherwise, there is a case where the base station 200 is not normal due to the base station 200.

In the following description of the present invention, if it is determined that a detailed description of a related known function or configuration may unnecessarily obscure the subject matter of the present invention, the detailed description thereof will be omitted. Terms to be described later are terms defined in consideration of functions in the present invention, and may be changed according to intentions or customs of users or operators. Therefore, the definition should be made based on the contents throughout the specification.

Hereinafter, with reference to the accompanying drawings will be described in detail the operating principle of the preferred embodiment of the present invention. Prior to the description of the operation of the present invention, the environment is simply set. 3 is a modified system for testing and existing system in the present invention. In (a) of FIG. 3, a relay line connecting the base station 302 and the base station 302 and the inter-wireless access switching subsystem 402 and 404 in the existing switch 400 is allocated. And (b) of FIG. 3 connects the assigned relay lines between different wireless connection exchange subsystem exchanges 410 and 450. In addition, (b) of FIG. 3 changes the reference signal point of the inter-connection exchange subsystem base station 410 to be used as the virtual base station from H'100 to H'200. In addition, the simulator 412 is loaded into the inter-connection switching subsystem 410 to be used as the base station 300. Subscribers create as many as they want in home location register 600. At this time, a four-digit subscriber that is consecutive to the same station number is generated. Thereafter, when the simulator 412 is executed, a printer statement of an initialization process comes out. Here, the initialization value selects what to do during location registration and call test. The initialization value starts with the first number and increases by one number, and the next number is the originating subscriber first number automatically generated by the simulator 412. In addition, there is a called number, a number of subscribers to be sent, cell information, and a call time for a caller to make a call. Then, the call is hung up after the call and then the call interval and the number of incoming calls, etc., which proceeds the same process again as many callers to the same caller number.

Finally, enter the desired values as appropriate, and then ask the last print statement if they have changed. If there is no result change, the simulator 412 makes as many calls as there are outgoing subscribers and sends a signal over the cable connecting the virtual base station 410 and the switch 450.

4 is a system configuration diagram of an apparatus and method for performing a call test with only the switch 400 without the base station 200 in the personal mobile communication service according to the present invention, and FIG. 5 is a flowchart according to the present invention.

FIG. 5 (ST1) executes the simulator 412 as if it were a real time in the inter-connection exchange subsystem (virtual base station) 410. That is, when the call button is pressed on the actual terminal 100, the simulator 412 processes the data as the base station 200 processes the data. Next, in FIG. 5 (ST2), signal transmission between the inter-wireless access switching subsystem (virtual base station) 410 and the inter-wireless access switching subsystem (switch) 450 is shown. First, ST3 of FIG. 5 sends a signal from the simulator 412 stage to the signal connection controller 414 at the bottom stage. At this time, the signal connection controller 414 compares the error of the message transmitter 416 with other various situations. If there is no abnormality, the signal transmission unit 416 transmits a signal. At this point, remember to insert the appropriate data in the head part and transmit it. 5, the ST4 transmits a signal to the message transmitter 456 of the exchange 450 in the message transmitter 416 receiving the signal. 5, the ST5 reads the head portion from the switch 450 through the message transmission unit 456 and the signal connection control unit 454. After that, compare with other items. In Fig. 5 (ST6) and (ST7), if there is no abnormality in the comparison result, a signal is sent to the application unit 452 stage to perform the transmission process.

6 and 7 are flowcharts of messages processed according to the existing regulations regarding call setup procedures. FIG. 6 (ST11) shows a connection management service request (CM Service) for establishing a connection with the inter-connection exchange subsystem (exchange) 450 in the inter-connection exchange subsystem (virtual base station) 410. Request) message to the wireless connection exchange subsystem (exchange) 450. 6, ST12 transmits an acknowledgment primitive of the connection of the signal connection controller 454 having no user data for the complete connection of the signal connection controller 414 connection. Wait for an initial message from the inter-connection exchange subsystem (virtual base station) 410. 6, ST13 transmits an initialization message to the inter-connection exchange subsystem (switch) 450 for the call setup. If the inter-connection exchange subsystem (virtual base station) 410 sends in time or an inappropriate message, the inter-connection exchange subsystem (exchange) 450 starts call recovery. In FIG. 6 (ST14), the inter-connection exchange subsystem (exchange) 450 that has received the initial message sends a call progress message to the inter-connection exchange subsystem (virtual base station) 410. At the same time, the procedure for establishing the called part of the call is started. The message indicates that no additional call setup information will be accepted. 6, ST15 illustrates a radio resource allocation request message (virtual base station) 410 for the radio access switching subsystem (switch) 450 to request radio resource allocation for a voice call. Send to. 6, ST16 selects an appropriate type of traffic channel in the inter-radio access switching subsystem (virtual base station) 410, and sends a radio resource allocation complete message indicating that the required channel allocation has been performed correctly. If an error occurs in channel assignment, the inter-connection exchange subsystem (virtual base station) 410 sends an allocation failure to the inter-connection exchange subsystem (exchange) 450. In FIG. 7 (ST21), the inter-connection switching subsystem (switch) 450 sends a paging request to the inter-connection switching subsystem (virtual base station) 410 to set up an incoming call.

(ST22) of FIG. 7 processes all of the transmission of the response message from the existing system to the inter-wireless exchange switching subsystem (virtual base station) 410 in the inter-wireless exchange switching subsystem (virtual base station) 410 to exchange the inter-wireless connection. Paging response is sent to subsystem 450 (switch). 7 (ST23) has all the information necessary to proceed with the call, and sends an initial setup message to the terminating inter-connection switching subsystem (virtual base station) 410. However, the origination call is sent to the same inter-connection exchange subsystem (virtual base station) 410. This message is then used to establish a connection. (ST24) of FIG. 7 indicates that an initial setup message has been received by the inter-radio access switching subsystem (virtual base station) 410 sends a call confirmation message to the inter-radio access exchange subsystem (switching station) 450. The original indicates that the terminal can receive the initially displayed call. (ST25) of FIG. 7 shows that a radio resource allocation request message is transmitted to a radio resource allocation request message (virtual base station) in order for the inter-connection exchange subsystem (switch) 450 to request radio resource allocation for an incoming voice call. 410). FIG. 7 (ST26) selects an appropriate type of traffic channel in the inter-radio access switching subsystem (virtual base station) 410 and sends a radio resource allocation complete message indicating that the required channel allocation has been performed correctly. 6, ST17 transmits a notification message to the inter-wireless switching exchange subsystem (virtual base station) 410 informing that the inter-wireless switching exchange subsystem (switching station) 450 is calling the called terminal. (ST27) of FIG. 7 informs the calling party of the notification indication corresponding to the inter-connection exchange subsystem (virtual base station) 410 which received the notification message. Then, it waits for a connection notification message. 7 (ST28) sends a connection message to inform the destination terminal that the destination terminal has responded from the inter-connection exchange subsystem (virtual base station) 410 to the inter-connection exchange subsystem (switch) 450. (ST29) of FIG. 7 is a response message indicating that the inter-connection exchange subsystem (switching station) 450, which has received the connection message, has connected both sides and has received a connection response. Send to. 6, ST18 transmits a connection notification message to an originating radio access switching subsystem (virtual base station) 410, which has received a response report from the called party. FIG. 6 (ST19) transmits a connection recognition message to the inter-connection exchange subsystem (switch station) 450 in which the inter-connection exchange subsystem (virtual base station) 410 confirms receipt of the connection message. By this procedure, any calling and called party is placed in a busy state.

8 and 9 are flowcharts of messages processed according to the existing regulations regarding call release procedures. (ST31) of FIG. 8 makes a call during the talk time received from the originating processor of the inter-wireless access switching subsystem (virtual base station) 410 in the print statement of the initial initialization process. And sends a release message to the inter-connection switching subsystem (switch station) 450 to recover the call control transaction. In ST32 of FIG. 8, an inter-wireless access switching subsystem (switch) 450 receives a release message. It releases the transaction identifier and sends a release complete message to the inter-connection exchange subsystem (virtual base station) 410. 8, ST33 transmits a call setup release command message to the inter-connection exchange subsystem (virtual base station) 410 after the inter-connection exchange subsystem (switch) 450 transmits the release completion message. . In step ST34 of FIG. 8, the inter-connection exchange subsystem (virtual base station) 410 receiving the call setup release command message recovers the allocated resources. When recovery is complete, a call establishment release complete message is sent to the inter-connection switching subsystem (switch) 450. In FIG. 9 (ST41), the incoming inter-radio connection exchange subsystem (exchange) 450 is informed of the origination release from the originating inter-radio connection exchange subsystem (exchange) 450. Then, the release message is transmitted to the called party's inter-wireless access exchange subsystem (virtual base station) 410. 9, ST42 releases the transaction identifier after the inter-wireless access switching subsystem (virtual base station) 410 receives the release message. And sends a release complete message to the inter-connection exchange subsystem (switch) 450. 9, ST43 transmits a call setup release command message to the inter-connection exchange subsystem (virtual base station) 410 after the inter-connection exchange subsystem (exchange) 450 receives the release complete message. . 9, ST44 recovers resources allocated by the inter-connection exchange subsystem (switch) 450 that has received the call setup release command. Then, the call setup release completion message is transmitted to the inter-connection switching subsystem (switch) 450. 8 and 9, ST35, ST36, ST45, and ST46 include a signal connection control unit 454 for the originating radio connection exchange subsystem (exchange) 450 to disconnect the signal connection control unit 454. ) Transmits a release message to the inter-connection exchange subsystem (virtual base station) 410. In addition, the inter-connection exchange subsystem (virtual base station) 410 transmits a signal connection control unit 454 release completion message to the inter-connection exchange subsystem (switch) 450. As a result, all resources for a call are restored.

For the next call, the call exchange inter-subsystem (virtual base station) 410 transmits the call setup release completion message, and then goes back to the same number after the call interval time passes. The call interval time is the value input from the print statement during the initial initialization process after running the simulator.

The present invention can be variously modified and can take various forms and only the specific embodiments thereof are described in the detailed description of the invention. It is to be understood, however, that the present invention is not limited to the specific forms mentioned in the detailed description of the invention, but rather includes all modifications, equivalents, and substitutions within the spirit and scope of the invention as defined by the appended claims. It should be understood to do.

In the present invention operating as described above, the effects obtained by the representative ones of the disclosed inventions will be briefly described as follows.

For personal mobile communication service exchangers, it is difficult to use commercial simulators in terms of capacity or usage. And there are some aspects that are vulnerable to specification changes. Therefore, we implement the simulator while using the existing system. Therefore, it is a useful device and method in terms of development confirmation.

Claims (6)

Personal mobile communication consisting of a connection exchange subsystem with subscriber and relay line matching, a wireless call control device with system control, operation and maintenance, and an interconnect network subsystem providing the interworking capabilities of the two systems. In the exchange of services, A first wireless connection exchange subsystem comprising a simulator for providing a call processing function of a base station, a first signal connection controller for checking whether a first message transmitter is abnormal, and a first message transmitter for transmitting a signal; And a second wireless connection switching subsystem comprising a second message transmission unit connected to the first message transmission unit, a second signal connection control unit for checking whether a second message is abnormal, and an application unit providing a call processing function of an exchange station. A device for testing calls with only a switch without a base station in a private mobile communication service. An exchange system comprising a plurality of radio access exchange subsystems, comprising an application portion, a signal connection control portion and a message transmission portion, Setting the first inter-connection exchange subsystem to a virtual base station; Setting a second inter-connection exchange subsystem as an exchange system; Connecting the first inter-connection exchange subsystem and the second inter-connection exchange subsystem; And And performing a call setup and call release between the first inter-wireless access switching subsystem and the second inter-wireless access switching subsystem. 3. The method of claim 2, wherein the setting of the virtual base station changes the signal point of the inter-connection switching subsystem to be used as the base station. The method of claim 2, wherein in the virtual base station, the data is processed in the simulator as if the data is processed in the actual base station, and then transmitted to the message transmitter under the signal connection control unit to check whether the signal is abnormal. And if there is no abnormality after signal comparison, inserting data corresponding to the head part and transmitting the data, and performing a call test using only an exchange without a base station in a personal mobile communication service. The base station of claim 2, further comprising: in the exchange, transmitting the transmitted signal to the message transmission unit and the signal connection controller in the communication unit, and then transmitting the signal in the application unit. How to test call with only exchanger without. 3. The method of claim 2, wherein the step of setting up and releasing a call comprises: performing an existing framework between a virtual base station and a switching center.