KR100444819B1 - Apparatus and method for measuring load of RAN in wireless telecommunication system - Google Patents

Abstract

1. TECHNICAL FIELD OF THE INVENTION

The present invention relates to a wireless access network load measuring apparatus and method thereof in a wireless communication system, and a computer-readable recording medium having recorded thereon a program for realizing the method.

2. The technical problem to be solved by the invention

The present invention provides a load measuring device and method for testing the call processing capacity and performance of a wireless access network (RAN) and a user traffic processing capability in a wireless communication system, and a computer program recording a program for realizing the method. To provide a record medium.

3. Summary of the Solution of the Invention

The present invention provides a method for measuring a load on a wireless access network (RAN) in a wireless communication system, comprising: an initialization step of performing an initialization operation for call processing and performance analysis of user traffic of the RAN; Performing a core network simulator function by a core network load generator (CNLG) to generate an incoming call at an unspecified time interval and to transmit it to the RAN; A multi-terminal simulator performing a multi-terminal simulator function to establish a connection for an incoming call through the RAN; A traffic generation step of the CNLG generating predetermined user traffic during a call duration and transmitting the predetermined user traffic to the multi-terminal simulator (MUES) through the RAN; A traffic loopback step of retransmitting corresponding user traffic received by the multi-terminal simulator (MUES) to the core network load generator (CNLG) through the RAN by a loopback function; And a call processing and user traffic analysis step of analyzing, by the CNLG, the performance of corresponding call processing and user traffic received through the RAN.

4. Important uses of the invention

The present invention is used for the performance test of the base station and base station controller of the wireless network.

Description

Apparatus and method for measuring load of RAN in wireless telecommunication system

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to an apparatus and method for measuring a load on a wireless access network in a wireless communication system, and to a computer readable recording medium having recorded thereon a program for realizing the method, and more particularly to an International Mobile Telecommunication (IMT-2000). In the next generation mobile communication network based asynchronous broadband wireless communication system (W-CDMA), the capacity and performance of call processing and user traffic processing of a radio access network (RAN) including a base station and a base station controller can be tested.

1 is an exemplary configuration diagram of a general wireless communication system, and illustrates an asynchronous broadband wireless communication system (W-CDMA) based on the IMT-2000 next generation mobile communication network.

As shown in FIG. 1, an asynchronous broadband wireless communication system (W-CDMA) includes a radio access network (RAN) including a user equipment (UE) 11, a base station 12, and a base station controller 13. Network) and a wireless communication core network (for example, GSM-MAP core network) 14 are organically connected.

As an example of a conventional load measurement method for measuring call and user traffic processing performance, a plurality of terminals 11 are used to establish a call with the base station 12 at an unspecified time interval and generate traffic, thereby generating the traffic. We measured the call processing and traffic processing performance and capacity. However, this method is difficult to generate calls as busy hour call calls (BHCAs), and also requires a large number of terminals 11 to generate calls as busy hour calls. There was considerable difficulty in controlling.

Another method of load measurement is to configure a call processing processor and a call generation processor in a system or in a separate simulator, and generate and transmit a call as much as BHCA from the call generation processor to the call control processor of the actual system, thereby simulating the progress of the call. The processing processor sends and receives messages for the call processing with the call control processor and measures the load. However, since this method requires a separate processor in the system, modification of the original system is required, and only the load on the call processing block can be measured through communication between processors related to call processing. There is a problem that it is difficult to measure the performance and capacity of the call processing capability and the user traffic processing capability of the system by generating user traffic while performing the call processing procedure.

The present invention has been proposed to solve the above-mentioned conventional problems, and a load measuring apparatus capable of testing the call processing capacity and performance and the user traffic processing capability of a radio access network (RAN) in a wireless communication system; It is an object of the present invention and to provide a computer-readable recording medium having recorded thereon a program for realizing the method.

1 is an exemplary configuration diagram of a general wireless communication system.

Figure 2 is a block diagram of an embodiment of a wireless access network load measurement apparatus according to the present invention.

Figure 3 is a detailed configuration diagram of an embodiment of a multi-terminal simulator (MUES) of the apparatus for measuring the wireless access network load according to the present invention.

Figure 4 is a detailed configuration diagram of an embodiment of a core network load generator (CNLG) of the apparatus for measuring the wireless access network load according to the present invention.

5 is a detailed configuration diagram of an embodiment of a wireless access network load measurement apparatus according to the present invention.

6 is a flowchart illustrating a method for measuring a wireless access network load according to the present invention.

* Explanation of symbols for the main parts of the drawings

20: RAN load measurement device 21: multi-terminal simulator (MUES)

22: core network load generator (CNLG) 23: call test generator

In order to achieve the above object, the present invention provides a radio access network (RAN) load measurement apparatus, which performs a core network simulator function, generates an incoming call at an unspecified time interval, and provides predetermined user traffic for each call during a call duration. Call / traffic generation and analysis means for generating and transmitting to the RAN and analyzing the performance of the corresponding call processing and user traffic received through the RAN; Traffic loopback means for establishing a connection to an incoming call through the RAN while performing a multi-terminal simulator function, and retransmitting the corresponding user traffic received by the loop back function to the call / traffic generation and analysis means through the RAN. ; And a call test for controlling total test time and call generation by connecting and controlling the call / traffic generation and analysis means and the traffic loopback means, and outputting call processing and traffic performance analysis results of the call / traffic generation and analysis means. Including a control means, the call / traffic generation and analysis means, connected to the base station controller of the RAN to perform the function of the core network simulator, by selecting a predetermined terminal to continuously generate an incoming call at an unspecified time interval, When an incoming call is established, user traffic of a predetermined pattern is transmitted to the traffic loopback means through the RAN for a predetermined call duration, and data related to a call and traffic performance is measured and transmitted to the call test control means. .

In addition, the present invention provides a method for measuring a load on a wireless access network (RAN) in a wireless communication system, comprising: an initialization step of performing an initialization operation for performance analysis of call processing and user traffic of the RAN; Performing a core network simulator function by a core network load generator (CNLG) to generate an incoming call at an unspecified time interval and to transmit it to the RAN; A multi-terminal simulator performing a multi-terminal simulator function to establish a connection for an incoming call through the RAN; A traffic generation step of the CNLG generating predetermined user traffic during a call duration and transmitting the predetermined user traffic to the multi-terminal simulator (MUES) through the RAN; A traffic loopback step of retransmitting corresponding user traffic received by the multi-terminal simulator (MUES) to the core network load generator (CNLG) through the RAN by a loopback function; And a call processing and user traffic analysis step of analyzing, by the CNLG, the performance of corresponding call processing and user traffic received through the RAN.

The present invention may further include an analysis result output step of outputting a call processing and traffic performance analysis result after performing the call processing and user traffic analysis step.

On the other hand, the present invention provides a radio access network (RAN) load measurement apparatus having a processor, an initialization function for performing an initialization operation for performance analysis of the call processing and user traffic of the RAN; A core network simulator (CNLG) performing a core network simulator function to generate an incoming call at an unspecified time interval and to transmit it to the RAN; A multi-terminal simulator performing a multi-terminal simulator function to establish a connection for an incoming call through the RAN; A traffic generation function of the CNLG generating predetermined user traffic for a call duration and transmitting the predetermined user traffic to the multi-terminal simulator (MUES) through the RAN; A traffic loopback function for retransmitting corresponding user traffic received by the multi-terminal simulator (MUES) to the core network load generator (CNLG) via the RAN by a loopback function; And a computer-readable recording medium having a program recorded thereon for the CNLG to realize a call processing and user traffic analysis function for analyzing performance of corresponding call processing and user traffic received through the RAN. .

The present invention also provides a computer readable recording medium having recorded thereon a program for further realizing an analysis result output function for outputting a call processing and traffic performance analysis result after performing the call processing and user traffic analysis function.

The present invention can test the call processing capacity and performance and the user traffic processing capability of a radio access network (RAN) in an IMT-2000 asynchronous system. For this purpose, a multi-terminal simulator (MUES) is not directly connected to a plurality of terminals and a core network. And CNLG to generate a large number of calls during a specific test time, generate a random pattern of user traffic when each call is established, and test the call processing capability and capacity of the radio access network (RAN). In addition, it measures user traffic handling capability.

That is, the present invention provides a core network load generator (CNLG) that continuously generates incoming calls at unspecified time intervals while performing a core network simulator function, a multi-terminal simulator (MUES) for processing a plurality of incoming signals received by a base station, and controlling them. It consists of a call test control unit, and if an incoming signal is continuously generated as much as the first attempt call in the core network load generator, the call is established by the normal call procedure to the multi-terminal simulator through the base station controller and the base station and the user traffic of a specific pattern is transmitted. It can be used for performance test of base station and base station controller.

The above objects, features and advantages will become more apparent from the following detailed description taken in conjunction with the accompanying drawings. Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

2 is a configuration diagram of an apparatus for measuring a wireless access network load according to the present invention.

The apparatus for measuring a radio access network (RAN) according to the present invention can call as many times as required during a specific time while minimizing the change of the radio access network (RAN) composed of the actual base station 12 and the base station controller 13. In this case, each call connects the call according to the normal call processing procedure, and transmits a specific pattern of user traffic for the duration of the call to measure the processing capacity and performance of the call processing and user traffic of the radio access network (RAN). Can be.

To this end, the load measurement apparatus of the RAN includes a multi-user equipment simulator (MUES) 21, a core network load generator (CNLG) 22, and a call test controller 23. The base station controller 13 and the core network load generator (CNLG) 22 are connected to the STM (Synchronous Transfer Module) -1, similar to the actual mobile communication system, and multiplexed with the channel card of the base station 12 without a modem. After connecting the terminal simulator (MUES) 21 to the transport protocol (TP) 25, the core network load generator (CNLG) 22 continuously generates an incoming signal at an unspecified time interval, and the base station controller 13 and the base station ( 12) sets up a call according to a normal call procedure to a multi-terminal simulator (MUES) 21 and transmits user traffic to improve the performance and capacity of the base station 12 and the base station controller 13 of the radio access network (RAN). It can be measured.

As shown in FIG. 2, the load measuring apparatus 20 of the RAN according to the present invention connects to the base station controller 13 by STM-1 to perform a core network simulator function and to receive calls at unspecified time intervals. Performs multi-terminal simulator function by connecting TP25 with CNLG 22 which generates call, generates specific user traffic, and analyzes performance of received user traffic and channel card of base station 12 And a multi-terminal simulator (MUES) 21 and a multi-terminal simulator (MUES) 21 for establishing a connection to an incoming call and transmitting the received user traffic back to the base station 12 through a loopback function. And a core network load generator (CNLG) 22 connected to the Ethernet to control them, and a call test control unit 23 showing the performance of the overall call processing and user traffic at the tester.

The call test control unit 23 is preferably a notebook, connected to a multi-terminal simulator (MUES) 21 and a core network load generator (CNLG) 22 via Ethernet to control the overall test time and call generation, and during the entire test. Receive information from the core network load generator (CNLG) 22 about the performance and capacity of calls and user traffic, such as the total number of calls generated, the number of successful calls, the number of failed calls, the average bit error rate of user traffic, the block error rate, and the transmission delay. To the tester. To this end, the calling party number and the terminal number are input from the tester or received as a data file, and are transmitted to the multi terminal simulator (MUES) 21 and the core network load generator (CNLG) 22. In addition, when the average time between call occurrences and the average call duration are received and transmitted to the core network load generator (CNLG) 22, the core network load generator (CNLG) 22 controls the generation of an incoming call based on this information. .

The core network load generator (CNLG) 22, which communicates with the base station controller 13 using the STM-1, performs the function of the core network simulator, and selects any terminal to continuously generate an incoming call at an unspecified time interval, When an incoming call is established, a certain pattern of user traffic is transmitted to the multi-terminal simulator (MUES) 21 through the base station controller 13 and the base station 12 for an arbitrary call duration. Then, the data related to the performance is measured and transmitted to the call test control unit 23.

The multiple terminal simulator (MUES) 21, which performs a plurality of terminal simulator functions, is connected to the channel card of the base station 12 by TP25 without a modem, and checks whether the terminal number is managed when the incoming call is received. As a result of the check, if it is a terminal that it manages, it performs call setup and loads user traffic received from the base station 12 through the base station 12 and the base station controller 13 by a loopback function. Re-transmit to the (22) to measure the user traffic processing capacity and performance of the base station 12 and the base station controller 13. As described above, the RAN load measurement apparatus according to the present invention, along with the call processing test for traffic For this purpose, it is possible to generate a continuous call in the core network load generator (CNLG) 22, and when the call is connected, various user traffic for each call is generated, and the multi-terminal simulator through the base station controller 13 and the base station 12 (MUES) 21, and a multi-terminal simulator (MUES) 21 loops back the received traffic to generate core network load through the base station 12 and the base station controller 13 To CNLG 22. Then, the CNLG 22 measures the traffic performance of the base station 12 and the base station controller 13 by analyzing the average bit error rate, transmission delay, and the like for the user traffic according to the increase in the number of calls.

Hereinafter, a multi-terminal simulator (MUES) 21 performing a plurality of terminal simulator functions in the RAN load measuring apparatus 20 according to the present invention will be described in more detail with reference to FIG. 3.

3 is a detailed configuration diagram of an embodiment of a multiple terminal simulator (MUES) of the apparatus for measuring a wireless access network load according to the present invention. In the drawing, "31" is a multi-terminal control unit, "32" is a terminal call processing unit, and "33". Denotes a dedicated channel controller, "34" denotes a common channel controller, and "35" denotes a TP25 external interface.

Originally, the terminal handles one call. In this case, a large number of terminals are required for the performance and capacity test of the radio access network (RAN), and it is difficult to operate or control them. Thus, the multi-terminal simulator (MUES) 21 includes a multi-terminal control unit 31 which manages all terminal numbers in order to perform a plurality of terminal functions, a terminal call processing unit 32 which performs call processing, and a call setup time. A dedicated channel controller 33 for controlling a channel allocated exclusively for each terminal, a common channel controller 34 for controlling a channel commonly used by all terminals, and a TP25 external interface 35.

As such, the multi-terminal simulator (MUES) 21 divides the channel of the terminal into a common channel control unit 34 and a dedicated channel control unit 33 to perform a multi-terminal function. Here, the common channel control unit 34 controls channels commonly used by all terminals, and sets a channel for them as a Permanant Virtual Channel (PVC). In addition, the dedicated channel control unit 33 has to set the dedicated channel for each terminal number to PVC in advance to the channel card of the base station at the time of initial system start, and then set for the terminal of the incoming call received from the common channel control unit 34. The dedicated channel is selected from preset PVCs, the signaling data received on the dedicated channel is transmitted to the terminal call processing unit 32, and the user traffic is retransmitted to the base station by a loopback function.

Looking at this in more detail as follows.

The multi-terminal control unit 31 distinguishes terminal numbers for incoming calls.

The common channel control unit 34 controls a channel commonly used by all terminals, and processes information transmitted through a paging channel, a forward and reverse access channel, and a system information broadcasting channel, which are commonly used by all terminals. The processor 32 transmits the data to the base station 12 through the processor 32 or the TP25 interface 35.

The terminal call processing unit 32 performs call processing for each terminal. When an incoming call is input from the paging channel of the common channel control unit 34, the terminal call processing unit 32 asks whether the terminal number is valid. In response to this, if the terminal number is valid, call processing is performed, and the dedicated channel controller 33 is instructed to select a specific dedicated channel.

The dedicated channel control unit 33 controls a channel allocated to each terminal exclusively, and at the beginning of the initial system, the dedicated signaling channel and the user traffic for each terminal up to the channel card of the base station 12 through the TP25 external interface unit 35. The channel is set as a Permanant Virtual Channel (PVC), and when an incoming call for a specific terminal arrives, the terminal call processing unit 32 selects a pre-allocated signaling channel and a user traffic channel. Then, the information transmitted through the signaling channel is transmitted to the terminal call processor 32, and the data transmitted through the user traffic channel is retransmitted to the base station 12 by a loopback function.

Now, a core network load generator (CNLG) 22 performing a core network simulator function in the RAN load measuring apparatus 20 according to the present invention will be described in more detail with reference to FIG. 4.

FIG. 4 is a detailed configuration diagram of a core network load generator (CNLG) of the apparatus for measuring wireless access network load according to the present invention. In the drawing, "41" is a call generation controller, "42" is a call processing controller, and "43" Denotes a channel manager, "44" denotes a visited location register (VLR), "45" denotes a traffic processor, "46" denotes a common line signal processor, and "47" STM-1 external interface.

As shown in FIG. 4, the core network load generator (CNLG) 22 selects a specific terminal at an unspecified time interval to generate an incoming call in order to perform a core network simulator function. A call processing controller 42 for performing call connection establishment, a common line signal processor 46 for transmitting and receiving a message related to call establishment by establishing a No.7 signaling connection with a base station controller, and generating and receiving user traffic. It includes a traffic processing unit 45 for analyzing the performance of the user traffic.

The common line signal processing unit 46 sets No. 7 signaling with the base station controller and transmits and receives signaling messages related to call processing.

The call generation control unit 41 is connected to the call test control unit 23 to control the entire test time defined by the tester, and among the caller number and the terminal number managed by the user at the time interval between call occurrences following a specific distribution. Randomly select calling party number and terminal to generate incoming call and set call duration. It also measures the number of calls that occurred during the entire test time, the number of calls that succeeded in call setup, and the number of calls that failed.

When the call processing control section 42 receives an incoming call from the call generation control section 41, it checks whether the called terminal is in its service area through the visited location register (VLR) 44, and if it is in the service area, the paging message. Send to the base station controller. On the other hand, upon receiving a response to paging, call connection setup is performed, wherein a signaling message related to call setup is transmitted / received with the base station controller through the common line signal processor 46. In addition, the call processing controller 42 requests the channel manager 43 to configure the user traffic channel when the signaling channel is established to the terminal through the radio access network (RAN).

The channel manager 43 manages a channel for transmitting user traffic, selects a specific traffic processor 45 when receiving a channel setting request from the call processing controller 42, and externally the traffic processor 45 and the STM-1. Channel information for transmitting AAL5 (ATM Adatation Layer 5) data between the interface unit 47, and traffic information for channel information for transmitting AAL2 (ATM Adatation Layer 2) data during the STM-1 external interface unit 47 and the base station control period. Transfer to 45. Receiving this, the traffic processor 45 sets the AAL5 channel to the STM-1 external interface 47 and instructs the STM-1 external interface 47 to set the channel for transmitting the AAL2 data with the base station controller. In addition, the traffic processor 45 generates a specific pattern of user traffic and transmits it to the base station controller, and measures the bit error rate, block error rate, transmission delay, and the like for the user traffic received from the base station controller.

The STM-1 external interface unit 47 is connected to the base station controller STM-1 to transmit signals and traffic. That is, the AAL5 signaling data received from the common line signal processing unit 46 is transmitted to the base station controller as AAL5, and the AAL5 user traffic received from the traffic processing unit 45 is converted to AAL2 and transmitted to the base station controller. The user traffic is converted to AAL5 and transmitted to the traffic processing unit 45.

FIG. 5 is a detailed configuration diagram of an apparatus for measuring a wireless access network load according to the present invention. In FIG. 5, "51" is a call processing part (CPP) and "52" is a common control part (CCP). ), "53" represents a user data part (UDP), "54" represents a data transmission unit, "55" represents a cell bus, and "56" represents an external interface unit.

The call processing unit (CPP) 51 is the multi-terminal control unit 31, the terminal call processing unit 32, and the core network load generator (CNLG) 22 of the multi-terminal simulator (MUES) 21 of FIG. The call generation control unit 41, the call processing control unit 42, the channel manager 43, and the visited location register (VLR) 44 are processed.

The common control unit (CCP) 52 is the common channel control unit 46 in the common channel control unit 34 in the multi-terminal simulator (MUES) 21 of FIG. 3 and the core network load generator (CNLG) 22 of FIG. 4. ).

The user data unit (UDP) 53 is a dedicated channel controller 33 in the multiple terminal simulator (MUES) 21 of FIG. 3, and a traffic processor 45 of the CNLG 22 of the core network load generator (CNLG) 22 of FIG. 4. To process

The call processing unit (CPP) 51 and the common control unit (CCP) 52 are each performed by one microprocessor, and user data (UDP) that sets up a user traffic channel and transmits data at specific time intervals whenever a call is established. (53) is performed on n microprocessors because of the heavy load to be processed.

The call processing unit (CPP) 51, the common control unit (CCP) 52, and the user data unit (UDP) 53 are connected to the base station and the base station controller by the external interface unit 56, respectively. Method) Communication is performed, and the communication between the micro processes in the device is performed through the cell bus 55. To this end, the data transmission unit 54 is composed of an ATM processing unit (not shown) and a cell bus processing unit (not shown), and include a call processing unit (CPP) 51 and a common control unit (CCP) 52. And data received from the user data unit (UDP) 53 are converted into ATM cells by the ATM processing unit, and are converted into cells for cell bus communication by the cell bus processing unit and transmitted to the cell bus 55.

6 is a flowchart illustrating a method for measuring a wireless access network load according to the present invention.

As shown in FIG. 6, in the method for measuring a wireless access network (RAN) load according to the present invention, first, when a tester directly inputs a terminal and a calling number to the call test control unit 23 or inputs a data file (601), The call test control unit 23 registers the terminal ID by transferring it to the multi terminal simulator (MUES) 21 (602), and registers the terminal and the calling number by transferring it to the core network load generator (CNLG) 22 (603). ). In addition, the call test control unit 23 receives the call test parameters (total test time, average call interval, and average call duration) and the user traffic pattern from the tester (604). The core network test generator (CNLG) 22 Are registered in the call generation control unit 41 and the traffic processing unit 45, respectively (605).

The multiple terminal simulator (MUES) 21 receives a System Information Brodcation (SIB) message from a radio access network (RAN) and registers information about the RAN (606).

When the call generation control unit 41 of the core network load generator (CNLG) 22 generates a call at an unspecified time interval and sets the call duration, the call processing control unit 42 sets a paging request in order to set up an incoming call. Message is transmitted to the multi-terminal simulator (MUES) 21 via the radio access network (RAN) (607, 608). Upon receiving this, the MULS 21 searches for the registered UE ID, selects a specific signaling channel through the dedicated channel control unit 34 if it matches, and establishes a radio access network (RAN) and an RRC setup procedure. After performing (609), a paging response message is transmitted to the core network load generator (CNLG) 22 through the radio access network (RAN) (610, 611).

Then, after performing a call setup procedure between the core network load generator (CNLG) 22 and the multi-terminal simulator (MUES) 21 (612), the call processing control unit of the core network load generator (CNLG) 22 42 transmits a Radio Access Bearer (RAB) Assignment (RAB) request message to a radio access network (RAN) (613), and establishes a channel for delivering user traffic through the traffic processor 45, and wirelessly When the access network RAN transmits a radio bearer (RB) setup request message to the multi-terminal simulator (MUES) 21 (614), the multi-terminal simulator (MUES) 21 is a dedicated channel control unit 33 Select the user traffic channel through.

Next, after the traffic channel is established, when the call connection procedure is completed between the multi-terminal simulator (MUES) 21 and the core network load generator (CNLG) 22 (615), the core network load generator (CNLG) ( The traffic processor 45 of 22 transmits a specific pattern of user data to a multi-terminal simulator (MUES) 21 through a wireless access network (RAN), and the multi-terminal simulator (MUES) 21 receiving the received data is looped back. The function retransmits to the multi-terminal simulator (MUES) 21 via the radio access network (RAN) (616).

Subsequently, the traffic processing unit 45 of the CNLG 22 measures the bit error rate, the block error rate, the transmission delay, and the like with respect to the received traffic. When the call duration expires, the core network load generator (CNLG) 22 releases the call through a call disconnect procedure (617).

The above process is repeatedly performed during the entire test time, and when the entire test time expires, the call test control unit 23 performs statistics such as the total number of call attempts, the number of successful calls, the number of failures, and the user traffic analysis data during the test time. Show the information to the examiner.

The method of the present invention as described above may be implemented as a program and stored in a computer-readable recording medium (CD-ROM, RAM, ROM, floppy disk, hard disk, magneto-optical disk, etc.).

The present invention described above is not limited to the above-described embodiments and the accompanying drawings, and various substitutions, modifications, and changes are possible in the art without departing from the technical spirit of the present invention. It will be clear to those of ordinary knowledge.

As described above, the present invention configures a multi-terminal simulator (MUES) to process a large number of incoming calls, so that a large number of terminals are required for call processing as much as a busy attempt call (BHCA) and are required to control them. It can solve the difficulties, and also configures the CNLG, which performs the core network simulator function without the core network system, and continuously generates the incoming signal as many times as the busy attempt call (BHCA) desired by the tester. By establishing a call and generating user traffic by the call processing procedure, it is possible to measure the total processing capacity of the call and traffic of the base station and the base station controller more effectively and effectively without measuring only the load of a specific call processing processor.

In addition, the present invention can effectively measure the capacity and performance of the wireless access network (RAN) developed in the state that the development of the terminal and the core network system is not completed, there is an effect that can save the time and cost required for this.

Claims (14)

delete In the radio access network (RAN) load measurement apparatus, While performing the core network simulator function, it generates an incoming call at an unspecified time interval, generates predetermined user traffic for each call during the call duration, and transmits it to the RAN, and transmits the corresponding call processing and user traffic received through the RAN. Call / traffic generation and analysis means for analyzing performance; Traffic loopback means for establishing a connection to an incoming call through the RAN while performing a multi-terminal simulator function, and retransmitting the corresponding user traffic received by the loop back function to the call / traffic generation and analysis means through the RAN. ; And Call test control for controlling the total test time and call generation by connecting and controlling the call / traffic generation and analysis means and the traffic loopback means, and outputting call processing and traffic performance analysis results of the call / traffic generation and analysis means. Means, including The call / traffic generation and analysis means connects to a base station controller of the RAN to perform a function of a core network simulator, selects a predetermined terminal to continuously generate an incoming call at an unspecified time interval, and when an incoming call is set, The user traffic of a predetermined pattern is transmitted to the traffic loopback means through the RAN for a call duration, and the data related to the call and traffic performance are measured and transmitted to the call test control means. Access network load measurement device. The method of claim 2, The call / traffic generation and analysis means, Communicating with the base station controller of the RAN using a STM (Synchronous Transfer Module) -1, A common line signal processor configured to establish a common line (No. 7) signal connection with a base station controller of the RAN and transmit and receive a signal message related to call establishment; A call generation control unit which controls an entire test time, selects a predetermined terminal at an unspecified time interval, generates an incoming call, sets a call duration, and measures performance of a call generated during the test time; A call processing control unit which receives an incoming call from the call generation control unit and performs a call connection setting through the common line signal processing unit to the base station controller which manages a called terminal existing in a service area with reference to a visited location register (VLR). ; A channel manager managing a channel for transmitting user traffic; And After establishing the call connection, according to the user traffic channel setting request from the call processing controller, the channel for data transmission is set under the selective control of the channel manager, and the corresponding user traffic is generated and transmitted to the base station controller. Multiple traffic processing unit for analyzing the performance of the user traffic received from the controller Wireless access network load measurement apparatus in a wireless communication system comprising a. The method of claim 2 or 3, The traffic loop back means, Performs a number of terminal simulator functions, but is connected to the channel card of the base station in the RAN by a TP (Transport Protocol) 25 without a modem, and checks whether the terminal number managed by itself when receiving an incoming call, and manages itself In case of a terminal, wireless access in a wireless communication system is performed by performing call setup and retransmitting user traffic received from the base station to the call / traffic generation and analysis means through the RAN by a loopback function. Network load measurement device. The method of claim 2 or 3, The traffic loop back means, A multi-terminal control unit managing all terminal numbers to perform a plurality of terminal functions; Dedicated channel control unit for controlling the channel assigned to each terminal dedicated to the call setup; A common channel controller for controlling a channel commonly used by all terminals; And When an incoming call is input through the paging channel of the common channel controller, the terminal call processor determines whether the terminal number is valid by referring to the multi-terminal controller and instructs the dedicated channel controller to select a predetermined dedicated channel. Wireless access network load measurement apparatus in a wireless communication system comprising a. The method of claim 5, wherein The traffic loop back means, In order to perform a multi-terminal function, the channel of the terminal is divided into the common channel controller and the dedicated channel controller, The common channel controller controls a channel commonly used by all terminals and sets a channel for them as a Permanant Virtual Channel (PVC), The dedicated channel control unit sets a dedicated channel for each terminal number to PVC in advance to the channel card of the base station at the initial system start, and then presets a dedicated channel to be set for the terminal of the incoming call received from the common channel control unit. Selecting one of the PVCs, and transmits the signaling data received on the dedicated channel to the terminal call processing unit, and re-transmits to the base station by a loopback (lookback) function for the user traffic Network load measurement device. The method of claim 5, wherein The call / traffic generation and analysis means and the traffic loop back means, A call processing unit for processing the multi-terminal control unit and the terminal call processing unit of the traffic loopback means, the call generation control unit, the call processing control unit, the channel management unit, and the VLR of the call / traffic generation and analysis unit; A common controller configured to process a common channel controller of the traffic loopback means and a common line signal processor of the call / traffic generation and analysis means; A user data unit processing a dedicated channel controller of the traffic loopback means and a traffic processor of the call / traffic generation and analysis means; And An asynchronous transfer mode (ATM) processing unit and a cell bus processing unit, converting data received from the call processing unit, the common control unit and the user data unit from the ATM processing unit to an ATM cell, and performing a cell bus communication in the cell bus processing unit. Including a data transmission unit for converting a cell for transmission to the cell bus, Each of the call processing unit and the common control unit is performed by one microprocessor, and the user data for establishing a user traffic channel and transmitting data at predetermined time intervals each time a call is established has a large load to process. Performed on a microprocessor, The call processing unit, the common control unit and the user data unit perform asynchronous transfer mode (ATM) communication with a base station and a base station controller, respectively, by an external interface unit, and communication between microprocessors in the device is performed through the cell bus. A wireless access network load measuring apparatus in a wireless communication system, characterized in that. In the radio access network (RAN) load measurement method in a wireless communication system, An initialization step of performing initialization for call processing and performance analysis of user traffic of the RAN; Performing a core network simulator function by a core network load generator (CNLG) to generate an incoming call at an unspecified time interval and to transmit it to the RAN; A multi-terminal simulator performing a multi-terminal simulator function to establish a connection for an incoming call through the RAN; A traffic generation step of the CNLG generating predetermined user traffic during a call duration and transmitting the predetermined user traffic to the multi-terminal simulator (MUES) through the RAN; A traffic loopback step of retransmitting corresponding user traffic received by the multi-terminal simulator (MUES) to the core network load generator (CNLG) through the RAN by a loopback function; And Call processing and user traffic analysis step of the CNLG analyzing the performance of the corresponding call processing and user traffic received through the RAN Wireless access network load measurement method in a wireless communication system comprising a. The method of claim 8, After performing the call processing and user traffic analysis step, an analysis result output step of outputting the call processing and traffic performance analysis results Wireless access network load measurement method in a wireless communication system further comprising. The method according to claim 8 or 9, The initialization step, Registering a terminal ID by transmitting it to the multi-terminal simulator (MUES) and registering the terminal ID by passing it to the core network load generator (CNLG) when the test target terminal and the calling party number are input; Registering a call test parameter and a user traffic pattern with the call test controller, respectively, by a call generation controller and a traffic processor of the CNLG; And The multi-terminal simulator (MUES) receives a System Information Brodcation (SIB) message from the RAN to register information about the RAN Wireless access network load measurement method in a wireless communication system comprising a. The method of claim 10, The core network load generator (CNLG), Performs a core network simulator function, communicates with the base station controller of the RAN using STM-1, performs the function of the core network simulator, select a predetermined terminal to continuously generate an incoming call at an unspecified time interval, the incoming call is When set, the wireless communication system transmits user traffic of a predetermined pattern to the multi-terminal simulator through a RAN for a predetermined call duration, and measures and transmits data related to performance to the call test controller. Wireless access network load measurement method The method of claim 11, The multi-terminal simulator (MUES), Performs a plurality of terminal simulator functions, connected to the channel card of the base station in the RAN by the TP25 without a modem, and checks whether the terminal number is managed by itself when receiving an incoming call, if the terminal is managed by itself, call setup And retransmitting the user traffic received from the base station to the core network load generator (CNLG) through the RAN by a loopback function. In a wireless access network (RAN) load measurement device having a processor, An initialization function for performing an initialization operation for call processing and performance analysis of user traffic of the RAN; A core network simulator (CNLG) performing a core network simulator function to generate an incoming call at an unspecified time interval and to transmit it to the RAN; A multi-terminal simulator performing a multi-terminal simulator function to establish a connection for an incoming call through the RAN; A traffic generation function of the CNLG generating predetermined user traffic for a call duration and transmitting the predetermined user traffic to the multi-terminal simulator (MUES) through the RAN; A traffic loopback function for retransmitting corresponding user traffic received by the multi-terminal simulator (MUES) to the core network load generator (CNLG) via the RAN by a loopback function; And Call processing and user traffic analysis function that the CNLG analyzes the performance of the corresponding call processing and user traffic received through the RAN A computer-readable recording medium having recorded thereon a program for realizing this. The method of claim 13, After performing the call processing and user traffic analysis function, an analysis result output function for outputting the call processing and traffic performance analysis results A computer-readable recording medium that records a program for further realization.