• Title/Summary/Keyword: Next-Generation Communication

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A Study on communication method between OverCurrent Relay Agents using DNP 3.0 (DNP3.0을 이용한 과전류 계전기 에이전트의 통신 방안 연구)

  • Lee, H.W.;Jung, K.H.;Lim, S.I.;Hyun, S.H.;Choi, M.S.;Lee, S.J.
    • Proceedings of the KIEE Conference
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    • 2002.11b
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    • pp.265-267
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    • 2002
  • In this paper, the communication between Over-Current Relay agents is realized using DNP(Distributed Network Protocol), which is the standard communication protocol of distribution automation system in KEPKO. The key words in OCR agent communication are defined and represented by use of DNP application function code. And the DNP index for OCR agent is defined. The proposed communication scheme is tested by use of Communication Test Harness, a test tool for DNP protocol to show its soundness.

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Development of ACL Modul For Agent Communication in Auto-Adaptive OCR Agent (자율적응형 과전류계전기 에이전트의 통신을 위한 ACL모듈 개발)

  • Oh, T.W.;Lee, S.J.;Choi, M.S.;Kim, K.H.;Lim, S.I.;Min, B.W.;Lee, H.W.
    • Proceedings of the KIEE Conference
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    • 2002.07a
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    • pp.193-195
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    • 2002
  • In this paper, a communication module is proposed to be applied to communication between over current relay (OCR) agents in multi agent protection system. A multi agent system can achieve a global goal beyond the ability of each individual agent by working together, in which it is the prerequisite for each agent to be able to exchange or share information or processing status with other agent. The proposed communication module is purposed to enable not only each agent to bring about its own goal, but also the whole protective system to provide much improved coordinated protection. It is applied to a self adaptive protection system for a distribution network using multi agent concept to show its effectiveness.

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On The Next Generation Mobile Communication Services in Korea (차세대 이동통신 서비스 연구개발 현황)

  • Ryu, Seung-Wan;Ryu, Byung-Han
    • Proceedings of the Korean Operations and Management Science Society Conference
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    • 2004.05a
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    • pp.335-338
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    • 2004
  • In this paper, we present a perspective of the next generation mobile communication services and its characteristics. As a preliminary research work on the next generation mobile communications and services, we exploit the next generation mobile services [1]. We define the next generation mobile services as strata of services consisting of three different service levels, the service areas, the service functionalities, and the service technologies. We derive these service levels by means of the scenario based analysis. Finally, we propose a conceptual network architecture that can support the next generation mobile services by placing network functions and service elements within the network.

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Design Framework for Next Generation Mobile Convergence Service Models (차세대 이동통신 컨버전스 서비스 모델 개발 프레임워크)

  • Shin, Dong-Chun;Kim, Jin-Bae;Park, Sei-Kwon;Ryu, Seung-Wan
    • Journal of Information Technology Services
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    • v.9 no.4
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    • pp.243-259
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    • 2010
  • It is expected that the next generation mobile communication system will be a service-driven developed system capable to realize the human-centric mobile convergence services. and it is different from the technology-driven development approach of the second and the third generation mobile communication systems. As a preliminary research work on such service-driven system development approach for the next generation mobile communication system. we developed the scenario based service analysis process (2SAP) framework to derive core service technologies and functionalities. In this paper. we propose the next generation mobile convergence service business model creation methodology based on research results of the 2SAP framework. To achieve this goal, we first establish a service model contains several components such as infrastructures. operations. and provision of services that are indispensible for providing next generation mobile services. Then, the next generation mobile services and its corresponding business models can be created by adding service and value flows to the developed service model after defining necessary components of business model including actors, their relationships, and roles.

A Study on the Efficient Power Consumption of Next Generation Mobile Communication Systems (차세대 이동통신 시스템의 효율적인 전력 소모에 관한 연구)

  • Roh, Jae-Sung;Kim, Wan-Tae
    • Journal of Advanced Navigation Technology
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    • v.17 no.1
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    • pp.56-62
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    • 2013
  • Recently with smart phones and tablets, next generation mobile communication systems have supported various multimedia contents services. Thus, multimedia communication systems have been gradually increased compared to voice communication systems. Since the growth of multimedia services has increased users' duration on systems and decreased systems' effectiveness on power, a study on effective usage of power needs to be researched. Furthermore, radio shadow areas under heavy urban environments have generated unnecessary power consumption which reduces the usage duration of power on next generation mobile communication systems. This paper has reviewed the communication network architecture on next generation mobile communication systems and the unnecessary power consumption in radio shadow areas. This paper has also proposed the method of the effective power usage and analyzed the effective power usage on next generation mobile communication systems with simulation.

An Autonomous Optimal Coordination Scheme in a Protection System of a Power Distribution Network by using a Multi-Agent Concept

  • Hyun, Seung-Ho;Min, Byung-Woon;Jung, Kwang-Ho;Lee, Seung-Jae;Park, Myeon-Song;Kang, Sang-Hee
    • KIEE International Transactions on Power Engineering
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    • v.2A no.3
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    • pp.89-94
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    • 2002
  • In this paper, a protection system using a Multi-Agent concept for power distribution networks is proposed. Every digital over current relay(OCR) is developed as an agent by adding its own intelligence, self-tuning and communication ability. The main advantage of the Multi-Agent concept is that a group of agents work together to achieve a global goal which is beyond the ability of each individual agent. In order to cope with frequent changes in the network operation condition and faults, an OCR agent, suggested in this paper, is able to detect a fault or a change in the network and find its optimal parameters for protection in an autonomous manner considering information of the whole network obtained by communication between other agents. Through this kind of coordination and information exchanges, not only a local but also a global protective scheme is completed. Simulations in a simple distribution network show the effectiveness of the suggested protection system.

A study on An Optimal Protection System for Power Distribution Networks by Applying Multi-Agent System (Multy-agent system을 애용한 배전계통 최적 보호시스템 연구)

  • Jung, K.H.;Min, B.W.;Lee, S.J.;Choi, M.S.;Kang, S.H.
    • Proceedings of the KIEE Conference
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    • 2003.07a
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    • pp.299-301
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    • 2003
  • In this paper, a protection system using Multi-Agent concept for power distribution network is proposed. Multi agent system consist of Feeder agent, OCR(Over Current Relay) agent, Recloser agent and Switch agent. An agent calculates and corrects its parameter by itself through communication with neighboring agents and its own intelligence algorithm. Simulations in a simple distribution network show the effectiveness of the suggested protection system. Multi-Agent System, protection of distribution network, Communication.

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