• Korean Journal of Remote Sensing
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• v.19 no.1
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• pp.81-89
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• 2003

A provision of spatial information is expected to make a market explosion in various fields. A distribution of spatial data on wireless mobile environments indicates a huge expansion of mobile technology as well as a spread of geospatial applications. For high-qualified spatial information, the 4S technology Project that is integrating four kinds of spatial systems is currently being executed with the goal of nationwide integration of spatial data and spatial information systems. In terms of network environments, a mobile ad hoc network where mobile terminals communicate with each other without any infrastructures has been standardized for the next generation mobile wireless network. With respect to the future technologies for spatial information, it is necessary to design 4S applications on mobile ad hoc networks. This paper addresses the issue, which is proposing design concepts for distributing 4S spatial data on mobile ad hoc networks and for ad hoc styled 4S applications.

• Journal of the Institute of Convergence Signal Processing
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• v.7 no.2
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• pp.45-52
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• 2006

Mobile Ad-hoc Network(MANET) could be applied to various applications by virtue of its characteristics such as self-organizing and infrastructure-free network. This paper proposes a multimedia application service model for MANET, called multi-hop Relay(mRelay) system. It supports a multi-hop communication-based multimedia service interworked with Internet by using an unmanned moving robot with wireless multimedia communication function as a mRelay terminal. The modified AODV routing protocol was applied to the terminal and it was verified that composition and maintenance of mobile Ad-hoc network in mRelay system under the various indoor scenarios were successful and stable multi-hop multimedia services were possible. The mRelay system can be applicable to various application services of mobile Ad-hoc networks.

• The Transactions of the Korean Institute of Electrical Engineers P
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• v.60 no.4
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• pp.257-261
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• 2011

In this paper, we research the OLSR(Optimized Link State Routing Protocol) of the mobile ad-hoc network protocols, and design the system implementation based on the Embedded Linux for the Ubiquitous Space construction. We prove the performance of proposed system in the various experiment environments through several scenarios which is about transmitting the image data on the mobile ad-hoc network environment.

• Proceedings of the IEEK Conference
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• 2002.06c
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• pp.67-70
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• 2002

본 논문은 IIPv6 기반의 Mobile Ad-hoc Networks 환경에서 화상회의 도구 같은 멀티캐스트 응용을 서비스하는데 이용될 수 있는 IPv6 기반의 자동네트워킹 기술을 제시한다. IPv6 유니캐스트 자동설정 기능을 이용하여 이동단말의 유니캐스트 주소를 자동으로 설정할 수 있고, 멀티캐스트 자동설정 기능을 이용하여 멀티캐스트 주소 할당을 필요로 하는 응용에게 멀티캐스트 주소를 쉽게 할당할 수 있으므로 Mobile Ad-hoc Networks 환경에서의 사용자는 이러한 자동네트워킹 기술을 통해 멀티 캐스트 서비스를 쉽게 이용할 수 있다.

• Proceedings of the Korea Institutes of Information Security and Cryptology Conference
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• 2003.07a
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• pp.279-282
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• 2003

Mobile Ad hoc망의 경우 단말기에서 무선접속 인터페이스만 있으면 침입자로 하여금 쉽게 접속이 가능하게 하며, SSID와 WEP Key를 쉽게 취득하여 네트워크의 일원으로 참여할 수 있는 보안상의 취약성이 존재한다. 보안 취약성을 극복하기 위해서는 한정된 에너지 자원과 프로세서를 가진 무선 단말기로 침입탐지를 수행하기에는 문제점들이 존재한다. 따라서 본 논문에서는 프로세스 부하를 줄이는 IEEE802.11 Frame헤더의 Sequence Number 분석방법과 효과적으로 침입을 탐지할 수 있는 RF Monitoring을 이용하여 Mobile Ad hoc 환경에 적합한 칩입탐지 시스템을 제안한다.

• Proceedings of the KSRS Conference
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• 2002.10a
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• pp.844-849
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• 2002

A provision of spatial information is expected to make a market explosion in various fields. A distribution of spatial data on wireless mobile environments indicates a huge expansion of mobile technology as well as a spread of geospatial applications. For high quality spatial information, 4S technology project integrating 4 kinds of spatial systems is currently being executed with the goal of nationwide integration of spatial data and spatial information systems. In terms of network environments, a mobile ad hoc network where mobile terminals communicate with each other without any infrastructures has been standardized for the next generation mobile wireless network. With respect to the future technologies for spatial information, it is necessary to design 4S applications on mobile ad hoc networks. This paper addresses the issue, which is proposing design points for distributing 4S spatial data on mobile ad hoc networks and ad hoc styled 4S applications.

• Proceedings of the Korea Society for Simulation Conference
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• 2003.11a
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• pp.219-223
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• 2003

A lot of researches have been done on supporting QoS in the mobile networks and ad hoc network architectures, but most of them are not suitable in the static ad hoc environment. Most Research in mobile ad hoc networks has been devoted to routing protocol since they are fundamantal to the technology for improving QoS. In mobile ad hoc networks, QoS means not only fast speed and reliable transmission but reliable node. Needless to say, general QoS is serious question. In this paper, we enunciate the proposition to reduce network load and prevent node expire using buffer node.

• Journal of Internet Computing and Services
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• v.8 no.6
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• pp.1-8
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• 2007

The Mobile Ad-hoc network does environmental information which an individual collects in nodes which are many as the kernel of the USN technology based on the radio communication. And it is the latest network description delivering critical data to the destination location desiring through a multi-hop. Recently, the Ad-hoc network relative technique development and service are activated. But the security function implementation including an authentication and encoding about the transmitted packets, and etc, is wirelessly the insufficient situation on the Ad-hoc network. This paper provides the security service of key exchange, key management. entity authentication, data enciphering, and etc on the Mobile Ad-hoc network. It implements with the Ad-hoc network security management server system design which processes the security protocol specialized in the Ad-hoc network and which it manages.

• International Journal of Computer Science & Network Security
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• v.21 no.9
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• pp.132-140
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• 2021

Under the mobile ad-hoc network system, the main reason for causing congestion is because of the limited availability of resources. On the other hand, the standardised TCP based congestion controlling mechanism is unable to control and handle the major properties associated with the shared system of wireless channels. It creates an effect on the design associated with suitable protocols along with protocol stacks through the process of determining the mechanisms of congestion on a complete basis. Moreover, when bringing a comparison with standard TCP systems the major environment associated with mobile ad hoc network is regraded to be more problematic on a complete basis. On the other hand, an agent-based mobile technique for congestion is designed and developed for the part of avoiding any mode of congestion under the ad-hoc network systems.

• Proceedings of the Korea Information Processing Society Conference
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• 2009.11a
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• pp.917-918
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• 2009

This study evaluated the level of performance improvement in the form of a simulated experiment by adding fixed node in the middle of the network as a way to improve mobile ad.hoc network performance. The result showed that the performance level was much higher when fixed node was used together than when mobile node was used only, and the comparison of the mobile speed of mobile node also showed that use of fixed node together had higher performance. Moreover, the evaluation in accordance with the number of fixed node showed that more number of fixed node had shorter time delay. Further study following this on how many fixed node should be added on the ad.hoc network will ensure establishment of more reliable ad.hoc network.