• Journal of the Korea Institute of Information Security & Cryptology
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• v.32 no.6
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• pp.1171-1181
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• 2022

Front Collision-Avoidance Assist (FCA) or Smart Cruise Control (SCC) is installed in a modern vehicle, and the amount of data exchange between ECUs increases rapidly. Therefore, Automotive Ethernet, especially SOME/IP, which supports wide bandwidth and two-way communication, is widely adopted to overcome the bandwidth limitation of traditional CAN communication. SOME/IP is a standard protocol compatible with various automobile operating systems, and improves connectivity between components in the vehicle. However, no encryption or authentication process is defined in the SOME/IP protocol itself. Therefore, there is a need for a security study on the SOME/IP protocol. This paper proposes a deep learning-based intrusion detection system in SOME/IP and performs six attacks to confirm the performance of the intrusion detection system.

• Proceedings of the Korea Information Processing Society Conference
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• 2024.05a
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• pp.128-129
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• 2024

SOME/IP-SD 통신 프로토콜을 활용하여 네트워크 시스템의 데이터 전송 효율성을 향상시키고, 서비스 발견 및 동적 서비스 구성을 통해 시스템의 유연성과 확장성을 증대하는 방법을 탐색한다. SOME/IP-SD 는 네트워크 수신자의 요청에 따라 데이터를 전송, 불필요한 데이터 소비를 최소화함으로써 통신 효율을 극대화한다. 또한, Plug & Play 방식을 통해 네트워크의 변경 사항을 자동으로 인식하고 연결하여 서비스 관리 자동화에 기여한다. 이 프로젝트는 Renesas Electronics 의 RA6M3 MCU 보드를 사용하여 e2 studio 개발 환경에서 구현되었으며, 이를 통해 네트워크 관리 간소화 및 차량 시스템의 성능과 안전성 향상에 기여할 것으로 기대된다.

• Journal of the Korea Institute of Information and Communication Engineering
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• v.14 no.5
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• pp.1109-1116
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• 2010

In this paper, some performance characteristics of VoIP(Voice over Internet Protocol) for MANET(Mobile Ad-hoc Networks) with simulation is studied and appropriate condition for implementation of VoIP service is suggested. VoIP simulator is implemented with NS(Network Simulator)-2. VoIP traffic for simulation is generated with some codecs of G.711, G.723.1, G.726-32, G.729A, GSM.AMR and iLBC. As simulation results for traffic transmission under $670{\times}670m$ 50node MANET environment, performance data for MOS(Mean Opinion Score), network delay, packet loss rate and transmission bandwidth are measured. Normalized analysis about measured results shows that maximum VoIP connection satisfying VoIP service quality condition is 15.

• Journal of Institute of Control, Robotics and Systems
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• v.9 no.10
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• pp.789-797
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• 2003

An implementation scheme and some improvements are proposed to adopt public-licensed operating system, Linux and de-facto world-wide network standard, TCP/IP into the field of behavior-based autonomous mobile robots. To demonstrate the needs of scheme and the improvement, an analysis is performed on a server/client communication problem with real time Linux previously proposed, and another analysis is also performed on interactions among TCP/IP communications and the performance of Linux system using them. Implementation of behavior-based control architecture on real time Linux is proposed firstly. Revised task-scheduling schemes are proposed that can enhance the performance of server/client communication among local tasks on a Linux platform. A new method of TCP/IP packet flow handling is proposed that prioritizes TCP/IP software interrupts with aperiodic server mechanism as well. To evaluate the implementation scheme and the proposed improvements, performance enhancements are shown through some simulations.

• Proceedings of the Korea Information Processing Society Conference
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• 2024.05a
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• pp.162-163
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• 2024

자율 주행 자동차의 기능 개발 및 시뮬레이션을 보다 효과적으로 수행하기 위해 AUTOSAR Adaptive Platform 과 ROS2 간의 통신을 가능하게 하는 데이터 변환 아키텍처를 제안한다. AUTOSAR Adaptive Platform 의 SOME/IP 와 TCP/UDP layer 사이에 Transport Gateway 를 구축해 SOME/IP 와 ROS2 의 DDS 프로토콜 간의 데이터 변환 로직을 구현한다. 두 통신 프로토콜 간의 상호 운용성을 검증하여 AUTOSAR AP 와 ROS2 시스템의 통합을 통해 자율 주행 자동차의 기능 개발 및 시뮬레이션을 보다 효과적으로 수행할 수 있음을 보인다.

• The Journal of the Korea institute of electronic communication sciences
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• v.7 no.2
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• pp.257-262
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• 2012

In this paper, transmission performance for serval VoIP traffics is meaured and analysised over MANET(Mobile Ad-hoc Networks) under some types of intrusions. VoIP simulator based on NS-2 is used for performance measure. In the simulation, MOS, network delay, packet loss rate and call connection rate is measured for transmission performance. With analysis of measued data, characteristics of each traffics for transmission performance parameters is showed on MANET under multi intrusions, As a results of this paper, some recommendation condtion for codec selection and blackhole intrusion is suggested to implement VoIP services on MANET under multi intrusions like as DDoS and blockhole intrusions.

• The Journal of Korean Institute of Communications and Information Sciences
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• v.28 no.3B
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• pp.217-223
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• 2003

In spite of widely deploying information broadcasting services based on Internet, there are some limitations to use them due to the bound of Internet protocol. In this paper, a new Internet broadcasting technology for access network is proposed by employing IP address translation function in base station. There are some advantages such as; no need to allocate IP address to receiver, no need to know web site address, and reduction of traffic for server and network. Especially, this technology is very proper to wireless Internet local information broadcasting.

• The Journal of the Korea institute of electronic communication sciences
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• v.8 no.1
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• pp.71-76
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• 2013

In this paper, end-to-end performances for some VoIP traffics are measured and analyzed over MANET(Mobile Ad-hoc Networks) with packet aggregation transmission under blackhole attacks. A VoIP simulator based on NS-2 is used for performance measure. In the simulation, MOS, call connection ratio, network delay and packet loss rate are measured for end-to-end transmission performance. With analysis of measured data, characteristics of each traffics for performance parameters of packet aggregation transmission is showed on MANET under blackhole attack, As a results of this paper, some considerations be required for packet aggregation transmission are suggested to implement VoIP services on MANET under blackhole attacks.

• Proceedings of the Korean Information Science Society Conference
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• 2011.06d
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• pp.135-136
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• 2011

The more VoIP service is widely used, the more VoIP spam becomes threatened. Both VoIP spam violates the user's privacy and VoIP spam can cause money trouble. Therefore, it is important to reduce the VoIP spam but it is not easy to adopt some useful techniques to counter e-mail spam due to VoIP characteristics. We propose a technique using VoIP-RBL for countering SIP-based VoIP spam.

• 한국정보통신설비학회:학술대회논문집
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• 2008.08a
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• pp.350-354
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• 2008

IP-based mobile communication system is one of the key research items in the mobile networks for a long time. But, due to some technical issues and no need of markets, it is still not full-fledged. Recently, CDMA and WCDMA service providers want to introduce IP-based network connectivity. Even though their efforts, the main network intra-structure depends on ATM or HDLC technology. This article describes a good example of commercialization of IP-based mobile communication systems. Our research is not experimental system but a in-service system - replacing the existing equipments with new IP-based systems. In this paper, we introduce IP related technologies used in our research such as IP-based ATCA(Advanced Telecommunications Computing Architecture) platform, HA(High Availability) redundancy, IP multicast, network redundancy techniques, multi-link bundling and IP header compression. These are already well-known to internet domain. We mix them with mobile communication systems concretely.