KR20000066926A - Apparatus for the performance verification of Radio in WLL - Google Patents

Abstract

PURPOSE: An apparatus for verifying radio network performance in the WLL(Wireless Local Loop) is provided to verify the performance of a system by outputting the real-time test status of an FSU(Fixed Subscriber Unit) under examination on the screen so that an operator can monitor and test the status of service and examination process. CONSTITUTION: An FSU(30) is composed of an F-port(31), a QD2 communication module(32) and a check package(33). The F-port(31) transfers a message through a debug port. The QD2 communication module(32) analyzes and routes the information of an L3 header. The check package(33) analyzes the L7 header of the QD2 message transferred from the QD2 communication module(32) and transfers it to an internal message processing module. A DM(Diagnostic Monitor)(20) is composed of a module(21) to display the data received from the FSU(30) and a communication module(22) to communicate with the FSU(30).

Description

Apparatus for the performance verification of Radio in WLL}

The present invention relates to a wireless network performance verification apparatus of a wireless subscriber network, and in particular, to test the performance of the system by optimizing the field by outputting the test status of the subscriber access device under test on a screen in real time, The present invention relates to a wireless network performance verification apparatus of a wireless subscriber network capable of monitoring and testing a test progress.

1 is a block diagram of a Broadband Code Division Multiple Access (B-CDMA) wireless subscriber network (WLL) system, and as shown therein, a fixed subscriber unit (FSU) 1 is shown in FIG. It is a network terminal wirelessly connected to a base station (Radio Carrier Station (RCS)) 2 and wired to a subscriber to provide a general Plain Old Telephone Service (POTS) service, ISDN service, and data service to the subscriber.

The basic function is a high frequency (RF) transmission / reception function for transmitting / receiving information on the air interface, and transmitting the data converted from high frequency to baseband to the subscriber interface through various processes, and the base station performing the reverse process. Band signal processing function, signal protocol processing with network, wireless channel setting, subscriber processing device control processing function, interface function for connection with subscriber or other communication terminal, voice signal processing function for processing voice signal, etc. Will be performed.

Basically, one POTS RNT (Radio Network Terminal) is implemented to accommodate analog 1 subscribers, and includes a function for facsimile and modem communication, and a radio carrier station (RCS) 2 is a base station controller. (Radio Distribution Unit: RDU or CDMA link Radio Distribution Unit: CRDU) (3) and subscriber access unit (FSU) (1), MUX (Multiplexer), WAC (Wireless Access Controller), MIU (Modem Interface Unit) , VDC (Video Distribution and Combiner), RF Tx / Rx, HPA (High Power Amplifier), etc., and wired matching function with base station controller (RDU), wireless connection with subscriber access unit (FSU) (1) Perform the matching function.

On the other hand, the existing CIT (Craft Interface Terminal) and debug port that can be matched with the FSU can observe only call-related messages, so the pilot signal strength Ec, which is a fundamental factor in verifying the performance of the B-CDMA WLL system, can be observed. / It, which can measure the received signal Eb / No, bit error rate (BER) as well as received pilot Ec / Io, Eb / No per traffic channel, received RCS pilot power, and RNT transmit / receive powder data in real time Could not provide functionality.

As a result, the system was implemented, but no reliable field tests were made to see if the system had the performance to provide to the subscriber.

Accordingly, an object of the present invention, which was devised to solve the problems of the prior art operating as described above, enables the post data processing by extracting and storing various system parameters using a subscriber access device through measurement and analysis, and testing. The wireless network performance of the wireless subscriber network that verifies the performance of the reliable system and optimizes the field by outputting the test status of the subscriber access device in real time to the screen in real time, and allows the operator to monitor and test the service status and test progress. It is to provide a verification device.

1 is a block diagram of a conventional broadband code division multiple access wireless subscriber network system.

2 is a block diagram of a wireless network performance verification apparatus of the present invention wireless subscriber network.

3 is a flow chart of data exchange between the present invention FSU and DM.

4 is a block diagram of an interface device between a subscriber access device and a diagnostic monitor according to the present invention;

5 is a view showing a function at the time of transmission from the DM to the FSU of the interface module of FIG.

6 is a view showing a function at the time of transmission from the FSU to the DM of the interface module of FIG.

7 is a view showing a function at the time of transmission from the DM to the FSU of the QD2 communication module of FIG.

8 is a view showing a function at the time of transmission from the FSU to the DM of the QD2 communication module of FIG.

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

1, 12, 30: subscriber access device 2: base station

3: CRDU (CDMA link Radio Distribution Unit)

4: LCT (Local Craft Terminal)

5: MLOS (Multilink OS) 6: Rental Line Network

7: LE (Local Exchange) 8: OMS (Operation and Maintenance System)

10: base station 11, 20: diagnostic monitor (DM)

21, 34: DM module 21a, 34b: DM task

21b, 34a: DM interface 22, 32: QD2 communication module

31: F-Port 33: Inspection Package

HDLC: High-level Data Link Control

Embodiment of the wireless network performance verification apparatus of the preferred wireless subscriber network according to the present invention created to achieve the above object,

Diagnostic monitor (DM) that requests specific information in a time-division manner to provide subscribers with regular PLATS (PLANIN OLD TELEPHONE SERVICE) services, ISDN services, data services, etc. and outputs the received information on the screen in real time. (11);

When the specific information is requested through the diagnostic monitor, the specific information is requested to a base station (RCS) through an air interface, and the specific information transmitted from the base station is transmitted to the diagnostic monitor. And a subscriber station (FSU) 12.

The specific information includes pilot Ec / Io information, Eb / No information per traffic channel, received RCS pilot power information, RNT transmission and reception power data information, and the communication between the subscriber access device and the diagnostic monitor is performed by the QD2 protocol.

On the other hand, the subscriber access device 12,

An F port 31 that exchanges messages with the outside;

A QD2 communication module (32) for analyzing and routing information of an L3 header in a QD2 message composed of an L2 header, an L3 header, an L7 header, and data by the QD2 protocol;

An inspection package 33 for analyzing information of the L7 header among the QD2 messages received from the QD2 communication module and delivering the information to a message processing module;

The diagnostic monitor 11,

A diagnostic monitor module 21 which is a block for requesting and processing data necessary for system performance verification;

And a QD2 communication module 22 for converting a message output from the diagnostic monitor module into a QD2 protocol format and delivering the message to the subscriber access device.

The diagnostic monitor module 21,

A diagnostic monitor task module (21a) for calculating and displaying in real time measurement data for each task received from the subscriber access device and storing the received data for future data analysis;

When sending a message from the diagnostic monitor to the subscriber access device, the command ID and the length of each diagnostic monitor task are transmitted as DM data to the QD2 communication module evenly in time division or from the subscriber access device received by the diagnostic monitor. The diagnostic monitor interface module 21b identifies the corresponding diagnostic monitor task from the command ID of the diagnostic monitor data in the message, calculates the data using the received data of each task, and displays the result.

The communication path between the diagnostic monitor and the subscriber access device is preferably an RS-232 cable connecting the debug port of the subscriber access device and the COM port of the diagnostic monitor device.

Hereinafter, described in detail with reference to the accompanying drawings, preferred embodiments of the present invention.

As a preliminary step for verifying the wireless network performance of the B-CDMA WLL system, the pilot Ec / Io, Eb / No per traffic channel, received RCS pilot power, and RNT transmit / receive power data are received in real time. We can verify the performance of the wireless network by measuring the data rate, and propose a tool algorithm that can improve the quality of the wireless network by collecting and analyzing data for post processing.

2 is a block diagram of an apparatus for verifying wireless network performance of a wireless subscriber network according to the present invention. As shown therein, data transmission / reception of a diagnostic monitor (DM) 11 and a subscriber station (FSU) 12 is shown. Is done via an RS-232 cable connected between the debug port of the Subscriber Access Unit (FSU) 12 and the COM port of the notebook PC, and the DM 11 uses a Time Share technique to the FSU 12, respectively. Information, that is, Ec / Io, which is the strength of the pilot signal, Eb / No, which is the strength of the signal per traffic channel, the received RCS pilot power and the FSU transmit / receive power data, are sequentially requested to the FSU 12.

Accordingly, the FSU 12 transmits the corresponding information requested by the DM 11 to the DM 11 among the information received from the RCS 10 on the air interface, and the DM 11 uses the information in real time. By verifying the performance of the B-CDMA WLL system, the field is optimized.

Since the interface between the subscriber interface (FSU) 12 and the Diagnostic Monitor (DM) 11 uses the SISA (QD2) protocol, it is necessary to match the format of the data packet defined for each layer (OSI standard). The condition must be satisfied.

The DM task is a block for requesting and processing data required for system performance verification, and is executed when each task requests data to be measured by the subscriber access unit (FSU) 12 and processes the requested data.

A QD2 communication module exists to process each DM data into a packet that satisfies the QD2 protocol, and physical communication follows the RS-232 standard, and a subscriber access device (FSU) performed in real time according to the defined format ( 12) and the flow of data exchange between the diagnostic monitor (DM) 11 is shown in FIG. 3, and the protocols on each layer follow the OSI standard.

In addition, the value received through the FSU 12 is applied to the calculation of the system capacity and coverage, which is an important part of the design of the wireless network, and is used as the intermediate information for base station positioning.

4 is a block diagram of an interface device between a subscriber access device and a diagnostic monitor according to the present invention. First, the internal block diagram of the subscriber access unit (FSU) 30 will be described.

The F-port 31 has various ports (paths for exchanging messages with the outside) defined in the RDU / RCS / FSU, but among them, the F-port 31 refers to the case of message transmission through the debug port.

The QD2 message of the QD2 communication module 32 is composed of an L2 header, an L3 header, an L7 header, and data. The QD2 communication module 32 is a module that analyzes and routes information of the L3 header.

The inspection package 33 analyzes the L7 header of the QD2 message received from the QD2 communication module 32 and delivers it to the internal message processing module.

The DM module 21 will be described later in the DM block 20.

Next, the internal block diagram of the DM will be described.

The DM 20 is composed of a module 21 for displaying data received from the FSU 30 and a communication module 220 for communicating with the FSU 30.

The task module 21a calculates the measurement data for each task received from the FSU 30 and displays the measured data in real time and stores the received data for post-processing in the future.

When transmitting from DM to FSU, the interface module 21b equally divides the QD2 communication module (time division) by using the command ID for distinguishing each DM task 21a and its length (byte) as DM data as shown in FIG. 5. 22), and when transmitting from FSU to DM, the corresponding DM task 34b is identified from the command ID of the received DM data as shown in FIG. 6 and calculated and displayed using the received data of each task.

The QD2 communication module 22 converts the information transmitted from the interface module 21b into the QD2 protocol format when transmitting from DM to FSU as shown in FIG. 7, and transmits from FSU to DM as shown in FIG. 8. Switch to a processable form in the interface thread module in the QD2 format received from the FSU 30. That is, only the DM data of the separated packets is used in the thread module.

In addition, the QD2 communication module 22 is a communication function using the QD2 protocol during FSU link auditing, and if it does not receive a response from the FSU 30 within a predetermined time, it sends a RR (Receive Ready) message to connect with the FSU 30. Keep it.

As described in detail above, the effects obtained in the present invention will be briefly described as follows.

The present invention can verify the performance of the reliable B-CDMA WLL system and optimize the field by outputting the test status of the subscriber access device under test in real time, and the operator can monitor and test the service status and test progress. Bit error rate test function can improve call quality, system improvement can determine maximum number of subscribers, and system can be stabilized.

Claims (7)

Diagnostic monitor (DM) that requests specific information in a time-division manner to provide subscribers with regular PLATS (PLANIN OLD TELEPHONE SERVICE) services, ISDN services, data services, etc. and outputs the received information on the screen in real time. Wow; When the specific information is requested through the diagnostic monitor, the specific information is requested to a base station (RCS) through an air interface, and the specific information transmitted from the base station is transmitted to the diagnostic monitor. Wireless network performance verification apparatus comprising a subscriber access unit (FSU). The wireless network performance verification apparatus of claim 1, wherein the specific information includes pilot Ec / Io information, Eb / No information per traffic channel, received RCS pilot power information, RNT transmission and reception power data information. . 3. The apparatus of claim 2, wherein the communication between the subscriber access device and the diagnostic monitor is performed using a QD2 protocol. According to claim 3, The subscriber access device, An F port that exchanges messages with the outside; A QD2 communication module for analyzing and routing information of an L3 header in a QD2 message including an L2 header, an L3 header, an L7 header, and data according to the QD2 protocol; And a test package for analyzing information of the L7 header among the QD2 messages received from the QD2 communication module and delivering the information to a message processing module. The method of claim 4, wherein the diagnostic monitor, A diagnostic monitor module which is a block for requesting and processing data necessary for system performance verification; And a QD2 communication module for converting a message output from the diagnostic monitor module into a QD2 protocol format and transmitting the converted message to the subscriber access device. The method of claim 5, wherein the diagnostic monitor module, A diagnostic monitor task module for calculating and displaying, in real time, measurement data for each task received from the subscriber access device and storing the received data for future data analysis; When sending a message from the diagnostic monitor to the subscriber access device, the command ID and the length of each diagnostic monitor task are transmitted as DM data to the QD2 communication module evenly in time division or from the subscriber access device received by the diagnostic monitor. And a diagnostic monitor interface module for identifying the corresponding diagnostic monitor task from the command ID of the diagnostic monitor data in the message, calculating using the received data of each task, and displaying the result. The method of claim 6, wherein the communication path between the diagnostic monitor and the subscriber access device, A wireless network performance verification apparatus for a wireless subscriber network, which is an RS-232 cable connecting a debug port of a subscriber access device and a COM port of a diagnostic monitor device.