JP2006295860A - Protocol analysis method and analysis device of mobile communication - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To solve the problem that an analysis unit of a mobile communication protocol analysis device is constituted with a programmable integrated circuit such as FPGA, so that a development interval is long with a high cost and it is impossible to rapidly cope with version up of communication protocol and update of network service. <P>SOLUTION: A multi-CPU computing system is constructed with a general purposed CPU, and analysis algorithm is made parallel processing and is achieved by software. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

    The present invention relates to measurement of a network of a mobile communication system, measurement of a base station signal of a mobile communication system, and measurement of a mobile station signal of a mobile communication system.

    In a mobile communication system, radio signals are transmitted and received between a base station and a mobile station. This instrument that analyzes and displays radio signals in the air according to the protocol plays an important role in network operation status analysis, traffic volume analysis, and failure status analysis, and is also an important means for transmission and reception testing of base stations and mobile stations. It is.

    In general, radio wave signal analysis devices for mobile communication cannot know the parameters of a communication system in advance. In order to confirm the parameters, it is necessary to repeatedly search the input data string sequentially.

    Further, in the processing of the transmission / reception signal, the communication device performs a black box function between input and output and does not require intermediate results, but the analysis device needs to display all intermediate results between input and output.

    Therefore, although the amount of calculation for processing transmission / reception signals is larger than that of the communication device, the calculation speed of the analysis device is required to be higher than that of the communication device, and the amount of memory used is required to be higher than that of the communication device.

    In the analysis of mobile communication protocols, the algorithm is complicated, the amount of calculation is large, and the demand for calculation speed is high. In a communication apparatus, processing is generally performed by hardware using a dedicated integrated circuit.

    Since the analysis device must produce an intermediate result, these dedicated integrated circuits cannot be used. In order to guarantee the speed, in the conventional method, an analysis algorithm is realized by hardware by configuring an analysis unit with a programmable integrated circuit such as an FPGA (Field Programmable Gate Array) so that high-speed analysis can be performed.

However, the design of a programmable integrated circuit such as an FPGA is complicated, the device development period is long, and the cost is high. In addition, since the algorithm of the analysis device is realized by hardware, the conventional method is satisfactory in that the communication device version upgrade and network service update require the analysis device to respond quickly. hard. In the conventional method, a new analysis device must be newly developed in order to cope with a new communication protocol and network service update. In addition, since the algorithm is realized by hardware, work such as maintenance cannot be performed unless the engineer is seconded to the site or the equipment is brought into the service center.
Therefore, the present invention is capable of quickly responding to shortened analysis device development period, development cost reduction, communication protocol version upgrade and network service update, and enables reuse of hardware, speeding up maintenance work, and efficiency. Let it be an issue.

    In order to solve the above problems, in the present invention, the analysis device is constituted by a multi-purpose CPU, and the analysis algorithm is realized by software.

    According to the present invention, since the hardware development is reduced, the development period and development cost of the mobile communication protocol analyzer can be reduced. The correspondence between the communication protocol upgrade and the network service update can be realized by software upgrade, so that it is possible to respond quickly. Since existing hardware can be used continuously by replacing or upgrading the software, it is efficient and environmentally friendly. Since the analysis algorithm is realized by software, the apparatus can be remotely maintained through a communication environment such as the Internet.

BEST MODE FOR CARRYING OUT THE INVENTION

One embodiment of the present invention is shown in FIG. In this embodiment, since the data collection unit 1 collects data from the air, an RF (Radio Frequency) module is included. In addition, this unit realizes the function of converting analog signals in the air into digital signals. The user interface unit 2, the control unit 3, and the analysis unit 4 will be described below.

    The hardware of the user interface unit 2 includes a keyboard 19, a mouse 20 and a display 21. FIG. 5 shows the configuration of the user interface unit 2. The input / output processing part 22 is software. The input / output processing section 22 provides a user data input screen to the display 21 and a display screen for analysis results. It is also the role of the input / output processing part 22 that the user writes analysis parameters input through the keyboard 19 and mouse 20 to the data buffer 23 and corresponds to reading from the control unit 3. When displaying the analysis result on the display 21, the input / output processing section 22 reads the analysis result data from the data buffer 23 and displays the analysis data by a display method (image, curve, table, etc.) designated by the user.

The control unit 3 is configured by using a CPU board and becomes the center of the analysis apparatus. FIG. 3 is a software block diagram of this unit.
The data write management part 10 writes the digital signal data from the data collection unit 1 to the hard disk 11. When the CPU board has a PCI bus structure, the bus may be used for other purposes. At this time, the data write management part temporarily stores the data read from the data collection unit to the buffer, and writes the data of the buffer to the hard disk 11 when the next write processing cycle of the bus comes.
After receiving the first analysis instruction, the data reading portion 12 reads the analysis data from the hard disk 11 for the designated amount, transfers it to the analysis task generation and distribution portion 16, and records the current position of the reading. When the next analysis instruction is received, the analysis data is read from the current position by the designated amount and transferred to the analysis task generation and distribution section 16 to record the new reading current position. This operation is repeated until the analysis data arrives at the final position of the analysis data or the analysis instruction is stopped. When the final position of the analysis data is reached, the analysis task generation and distribution section 16 is notified.
The analysis task generation and distribution part 16 manages the analysis. A reading instruction is issued to the data reading portion 12 to receive the read analysis data. The first floor analysis task is generated using the analysis data and the analysis parameters, and the analysis data and the analysis parameters are delivered while issuing an analysis instruction to the analysis unit 4. During the analysis, the intermediate result of the analysis unit 4 is awaited. An intermediate result from the analysis unit 4 is received, an analysis task for the next stage is generated, and an instruction for the next stage analysis and an intermediate result are delivered to the analysis unit 4. When the analysis of the final stage is completed, the analysis end notification is received from the analysis unit 4 and the next analysis data is requested to the data reading portion 12.
The analysis result reading portion 14 is in a waiting state during the analysis of the analysis unit 4. When the final analysis is finished, the final analysis result is read from the analysis unit 4, written to the analysis result data buffer, and the result data is delivered in response to a request from the user interface unit 2.

    In the analysis unit 4, an analysis block is configured around each CPU. FIG. 4 shows the configuration of the analysis unit 4. Each analysis block 18 has a plurality of analysis algorithms for each analysis stage. When there is an analysis instruction from the task generation and distribution part 16 of the control unit 3, it is received through the I / O switch 17, and an algorithm corresponding to the analysis task in the analysis block according to the instruction starts to operate, analysis parameters and analysis Analyze after receiving the data. Unless the analysis is at the final stage, the analysis result is passed to the task management and distribution portion 16 of the control unit 3 as intermediate result data. The analysis result data is passed to the analysis result reading portion 14 of the control unit 3 when the final analysis is completed.

Example of system implementation of the present invention, system configuration diagram System configuration diagram of a conventional mobile communication protocol analyzer Structure diagram of the control unit of the present invention Structure diagram of analysis unit of the present invention Structural diagram of user interface unit of the present invention

Explanation of symbols

1 data collection unit; in the case of a radio signal, including an RF module 2 user interface unit; user input / output 3 control unit;
4 Analysis unit; a calculation unit having a CPU.
5 switches; standards such as Ethernet, also called I / O (Input, Output) switches;

Claims (5)

A data collection unit that collects measurement data, a control unit that performs data accumulation and analysis task management, a user interface unit that processes parameter settings and data analysis result display, and an analysis unit that analyzes measurement data Mobile communication protocol analyzer. 2. The movement according to claim 1, wherein the control unit of the analysis apparatus has a function of decomposing the data analysis algorithm into a plurality of tasks by using a parallel processing technique and distributing the data analysis algorithms to a plurality of CPUs of the analysis unit for parallel processing. Body communication protocol analyzer 2. The mobile communication protocol analyzing apparatus according to claim 1, wherein the analyzing unit of the analyzing apparatus comprises a plurality of general-purpose CPUs. 2. The mobile communication protocol analyzer according to claim 1, wherein the control unit of the analyzer performs data storage processing and analysis task management processing by software. 2. The mobile communication protocol analyzing apparatus according to claim 1, wherein the analyzing unit of the analyzing apparatus performs data analysis processing by software.

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