• The Journal of Korean Institute of Communications and Information Sciences
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• v.36 no.3B
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• pp.195-207
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• 2011

In this paper, we design and implement a visual IMS protocol analyzer, VIPA(Visual IMS Protocol Analyzer), providing a graphical view of session connection information between user equipments on IMS network. The VIPA captures SIP packets, which are used to setup sessions on IMS networks, and shows graphical view of session information to provide easy way to analyze IMS protocols. The existing protocol analyzer has limitation to show only terminal side protocol analysis information. Whereas the VIPA can provide not only terminal side but also server side analysis result so that the connection status between all the session participating user agents can be monitored.

• The Journal of the Korea institute of electronic communication sciences
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• v.8 no.11
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• pp.1697-1706
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• 2013

Protocol analyzer is being used to analyze proper processing of CMD & data when developing SD slave IP. In this thesis, a protocol analyzer was developed for analyzing SD protocol in Windows environment using Visual C++. SD protocol analyzer consists of embedded Linux software for storing SD memory data and MFC program for analyzing this. As for protocol analysis, it has been designed to collect data transmitted from SD memory card to host by Linux software for its analysis by MFC. It was found through the experiment that the CMD type could be confirmed that occurs when reading and writing data to SD memory card using the developed board, and debugging the problems that occur was possible.

• The Journal of the Korea Contents Association
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• v.11 no.10
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• pp.30-40
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• 2011

Recently, together with the development of wireless communication technologies and the wide use of smart phones, the demand of the next generation mobile communication has been increased. To construct the next generation mobile communication platform efficiently for a short period from protocol development phase to protocol stability phase, an protocol analyzer is required to verify and analyze the protocol. In this paper, we propose the protocol analyzer of LTE network which is the leader of the next generation mobile communication platforms. The protocol analyzer is a software based agent-server architecture and uses XML metadata which defines intercommunication messages to analyze the protocol of the next generation mobile communications. We can analysis the encoding messages applied to LTE network using the loading of the decoding library. We verify the superiority of the proposed analyzer through an integrated test with LTE network.

• Journal of the Institute of Electronics Engineers of Korea TE
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• v.37 no.3
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• pp.86-92
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• 2000

In this paper, we develop protocol analyzer that can analyze and monitor LAN(Local Area Network)-based TCP/IP protocol using the OOP(object-oriented programming) in Windows98/NT environment. TCP/IP(Transmission Control Protocol/Internet Protocol) protocol analyzer is consist of interface hardware, protocol analysis software and GUI(Graphic User Interface). It is designed for the real-time analysis using the real-time object. In results of Performance test, TCP/IP Protocol analyzer is showed that it can analyze and monitor without frame error in LAN-based. Also, developed protocol analyser operates better than conventional protocol analyzer in performance. It can be used in maintenance fields of communication and network.

• Journal of the Korean Society of Safety
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• v.25 no.6
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• pp.203-209
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• 2010

A compact ANSI/EIA 709.1 protocol analyzer system suited for maintenance of LonWorks network for safety management of underground facilities was developed and tested. The hardware is based on the TMS320LF2406A embedded system, and the software was designed using Visual C++6.0 under Windows XP environment. Connected to the LonWorks network the developed protocol analyzer decodes the raw packets and pass them to the master PC through USB port. Then on the PC the packets are processed and analyzed in various aspects and the key features that are essential to the maintenance of LonWorks network installed at underground facilities are displayed in a user-friendly format. Performance of the developed protocol analyzer was evaluated through a series of experiments, by measuring the speed of packet analysis and the error rate. The protocol analyzer proved to work reliably even under the increased bandwidth. However, more comprehensive tests under various underground environmental conditions are desired.

• Journal of KIISE:Computing Practices and Letters
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• v.11 no.4
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• pp.312-333
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• 2005

SIP(Session Initiation Protocol) has been proposed for session control protocol of Internet multimedia communication system like VoIP(Voice over IP). SIP has complicated session control steps to support various kinds of audio and video formats and to assure service quality of real time data communication. Up until now, existing protocol analyzers can not provide such detailed information of SIP based communication system. In this paper, therefore, we propose a new protocol analyzer as a tool that can analyze and diagnose SIP based multimedia communication system throughout the session initiation, data exchange and session change steps. The propose traffic analyzer, which is called STAT(SIP based Traffic Analysis Tool), Is implemented on Winder's environment so that it is generally usable and extensible. Since STAT analyze low level packets captured via Ethernet broadcasting property, it is able to provide session status and real time traffic monitoring information without any affection to the communication system. The STAT which is implemented in this paper. therefore, is expected to be a useful tool for developing and managing of a SIP based multimedia communication system.

• Proceedings of the Korean Information Science Society Conference
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• 2008.06d
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• pp.480-484
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• 2008

DNP3.0은 산업 분야에서 SCADA(Supervisory Control And Data Aquisition) system의 개방형 프로토콜로 사용되어지고 있다. 본 논문에서는 개발하거나 개발된 Module들 사이에서 송 수신되는 DNP3.0 PDU를 분석할 수 있는 기능을 제공하는 DPA(DNP3.0 Protocol Analyzer) Module을 설계 및 구현하였다. 해당 Master Station에서 Request 메시지를 생성하여 Outstation으로 전송하고 Outstation에서 수신된 Request 메시지를 분석하여 Response 메시지를 생성하여 Response 한다. 또한 Master Station 과 Outstation에서 DNP3.0 프로토콜을 사용하여 통신하는 중간에서 송 수신하는 메시지를 Monitoring한다.

• Journal of Korea Society of Digital Industry and Information Management
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• v.9 no.1
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• pp.111-118
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• 2013

This paper presents implementation of Air protocol analyzer and physical layer design algorithm. The analyzer is a measurement system providing real-time analysis of wireless signals between User Equipment (UE) and Node-B. The implemented system proposed in this paper consists of Digital Signal Processors (DSPs) and Field Programmable Gate Arrays (FPGAs). The waveform of Wideband Code Division Multiple Access (WCDMA) has been selected for verification of the proposed system. We designed the analyzer using equalizer algorithm and rake-receiver algorithm. Among various algorithms of designing the equalizer, we have chosen Linear Minimum Mean Square Error (LMMSE) equalizer that uses the inverse of channel matrix. Since the LMMSE equalizer uses the inverse channel matrix, it suffers from a large amount of computational load, while it outperforms most conventional equalizers. In this paper, we introduce an efficient procedure of reducing the computational load required by LMMSE equalizer-based receiver.

• Proceedings of the KIEE Conference
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• 2007.04a
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• pp.413-416
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• 2007

Use ot Intelligent devices that work on the ANSI/EIA 709.1 protocol is increasing. In this study an ANSI/EIA 709.1 protocol analyzer that can monitor and analyze the packets on LonWorks network is designed and developed. The device is based on TMS320LF2407A processor for decoding data packets, and uses XScale processor for sending data to the application program on PC. The application program has various analysis features as well as basic monitoring function. The developed device can be used for debugging purposes in development of any kind of LonWorks devices, and also it is useful in maintenance of LonWorks network or Lon Works devices.

• Journal of Internet Computing and Services
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• v.15 no.2
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• pp.143-147
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• 2014

In this paper, a novel MDI(Multiplex Distribution Interface) analyzer is designed in Ethernet-mode for DRM(Digital Radio Mondiale), and DRM+(Digital Radio Mondiale Plus) systems. The proposed MDI analyzer can reduce the overload of MDI packets by using memory sharing techniques into a common module block. In consequence, it verifies the received MDI packets by composition information of IP(Internet Protocol) and FAC(Fast Access Channel)/SDC(Service Description Channel) in DRM/DRM+ systems for the next generation digital radio broadcasting systems.