KR20020035672A - Test method for transmitting data between ETAU and STAU - Google Patents

Abstract

PURPOSE: A method for testing data transmission between an ETAU(EThernet Adaptation Unit) and an STAU(STM Adaptation Unit) is provided to achieve a smooth transmission of ATM cells and to secure the stableness of service by rapidly catching the state of the data transmission function between an ETAU and an STAU. CONSTITUTION: An operator requests a test through a terminal(S101). If a main processor appoints connection setup factors for an ETAU and an STAU according to the operator's request, each embedded processor executes connection setup for each factor. Especially the embedded processor of the STAU executes loopback setup for an STM port(S103). If connection setup is completed, the embedded processor of the ETAU manufactures a test data packet and sends test data to an AAL5 API(S107). If the sent data are returned to the ETAU, the ETAU embedded processor compares the received data with the transmitted data and judges whether the data are normal(S109,S101). In case that the data are normal, the ETAU embedded processor informs the main processor of it so that the main processor can output a test result to the operator(S113).

Description

Test method for transmitting data between ETAU and STAU}

The present invention relates to an ATM of a mobile communication system, and more particularly, a data transmission and reception function between an Ethernet Adaptation Unit (ETAU) and an STATM (STM Adaptation Unit) through an ATM switch is normally performed. It relates to a test method for data transfer between ET and EST, so that it can be quickly identified.

In general, ATM exchangers to which a real-time operating system is applied generally have a distributed structure according to functions, and each function is implemented in software according to this structure. These user programs are defined in the concept of a process and parallelized. Their unique tasks, call processing and operation maintenance, are generally performed by sending and receiving signals with messages between processors.

Accordingly, interprocess communication in different control systems in a distributed structure is achieved through switching of ATM switches. In addition, since the communication message types in the control system and the ATM switch are different from each other, an AAL that handles matching to the ATM layer is necessary. Therefore, an inter-processor communication (IPC) and ATM adaptation layer inherent in the ATM control system are required. 5 Matching between processing units is required.

1 is a block diagram of a general AAL5 data processing block.

As shown in FIG. 1, the MPC860 10 is informed about a test command and a data structure through a main processor and an IPC as a processor.

Accordingly, test data is given to the Bt8233 ATM SAR chip 30 through the PCI interface 20, and the Bt8233 ATM SAR chip 30 converts the data for transmission into ATM cells and delivers the cells to the switch through the optical transmission path. . The switch forwards the ATM cell to the other AAL5 data processing unit along the established path.

In addition, the cell output to the switch is output to the Ethernet Adaptation Unit (ETAU) and STM Adaptation Unit (STAU), respectively.

Here, a test path may be configured for the ETAU itself and the STAU itself.

In this case, only the ETAU internal device and the STAU itself internal device are verified. As a result, there is a limitation that the path between the ETAU and STAU cannot be verified.

In particular, since the path between the ETAU and STAU is mainly used for an IP forwarding service for another switch, it is an important path section for a data service.

Therefore, from this point of view, there is a problem that there is a limit in verifying the safety of the IP data transmission section only by testing in a unit unit using a conventional technique.

Accordingly, an object of the present invention is to solve the problems according to the prior art described above, and an object of the present invention is to quickly determine whether the ATM switch has a normal operation between the ATM and the ATM. It secures transmission and service stability, promotes user's use of service by expanding service quality according to securing service stability, and can check function without external test equipment due to internal test function, thereby reducing the cost of system verification. It is to provide a test method for data transmission between IT and ST.

In order to achieve the above object, a feature of the test method for data transmission between ETUI and ESTUI is that the operator requests a test through a terminal, and according to the requirements, the main processor performs ETAU and STAU. When each connection configuration element is assigned to each Embeded processor, each Embeded processor establishes a connection to the corresponding element, and performs a loop back setting for the STM port for STAU, and when the connection configuration is completed, the embedded processor of ETAU Prepare test data packet and send test data to AAL5 API, and when the transmitted data returns to ETAU → switch → STAU → STAU Port loop → STAU → switch → ETAU, the Embeded processor sends the received data and the transmit data. Determining whether the comparison is normal, and if the determination result data is normal, transfer to the main processor for operation To comprise the step of outputting the test result.

1 is a block diagram of a general AAL5 data processing block;

Figure 2 is a block diagram showing a data transmission system between the ET and EST reason to which the present invention is applied,

Figure 3 is a flow chart illustrating a test method for data transmission between ET reason, EST reason.

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

100: processor,

110: ETAU,

120: STAU,

130: switch.

Hereinafter, with reference to the accompanying drawings, preferred embodiments of a test method for data transfer between ET reason and EST reason according to the present invention.

2 is a block diagram showing a data transmission system between ET and EST.

As shown in FIG. 2, a test path between the ETAU 110 and the STAU 120 is configured in the main processor 100.

therefore. A test for a path connecting the ETAU 110, the switch 130, and the STAU 120 may be performed.

In particular, the ETAU 110 configures data according to the request of the main processor 100 to perform a procedure of transmitting / receiving and verifying data.

In addition, the STAU 120 performs a connection setup according to the requirements of the main processor 100, and configures the port to return to the inside of the system by controlling its own loop of the STM-1 frame combining and splitting unit 140 port.

The ETAU 110 includes an ETAU Embeded Processor 150 and a data partition recombination unit 160.

The STAU 120 includes a STAU Embeded Processor 170 and an STM-1 Frame Coupling and Splitting Unit 140.

An operation according to the present invention configured as described above will be described with reference to FIG. 3.

First, the operator requests a test through the terminal (S101).

Then, establish the connection between the source and destination according to the test requirements. The request for the connection is that the main processor assigns a connection configuration element to the ETAU and STAU, respectively, and each Embeded processor establishes a connection to the corresponding element, and in particular, performs a loop back configuration for the STM port for the STAU. (S103) (S105).

As a result of the determination in step S105, when the connection setup is completed, the test data packet is manufactured by the Embeded processor of the ETAU, and the test data is sent to the AAL5 API (S107).

Subsequently, when the transmitted data returns to ETAU → switch → STAU → STAU Port loop → STAU → switch → ETAU, the Embeded processor compares the received data with the transmitted data and determines whether it is normal (S109) (S111).

If the result of the determination of S111 is normal, the data is transmitted to the main processor and the test result is output to the operator (S113).

As described above, the present invention can test the function in an online state, thereby continuously verifying the system without interruption of service.

Accordingly, there is an effect that can maintain the system in a stable state.

In addition, a single test has the advantage that the entire service path from the transmitter and receiver to the switch connection function can be verified integrally.

In addition, it is possible to test without going through a separate test device, thereby reducing the additional cost of the test equipment.

Claims (1)

An operator requesting a test through a terminal; According to the requirements, the main processor assigns a connection configuration element to ETAU and STAU, and each Embeded processor establishes a connection to the corresponding element, and performs a loop back configuration for the STM port for STAU. ; When the connection is set up, preparing a test data packet in an Embeded processor of ETAU and sending test data to the AAL5 API; When the transmitted data returns to ETAU → switch → STAU → STAU Port loop → STAU → switch → ETAU, the Embeded processor compares the received data with the transmitted data to determine whether it is normal; And if the determination result data is normal, transferring the test result to the main processor and outputting a test result to an operator.