• Title/Summary/Keyword: 4S 통신망

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CBS Emergency Alert Broadcasting Service based on Cellular Networks (이동통신망을 이용한 CBS 재난문자방송 서비스)

  • Chang, Sekchin;Choi, Sung Jong
    • Proceedings of the Korean Society of Broadcast Engineers Conference
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    • 2011.07a
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    • pp.160-161
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    • 2011
  • 최근 IT 기술의 발전으로 TV, DMB, 이동통신망 등을 이용한 효율적인 재난문자방송 서비스가 국내외에서 관심을 받고 있다. 특히. 이동통신망은 지역단위 전송이 가능하기 때문에 지진, 해일 등의 심각한 재난이 예상되는 지역에 신속한 경보 서비스를 가능하게 해준다. 국내에서는 이미 2G 이동통신망을 이용하여 대국민 재난문자방송 서비스를 실시하였다. 그러나 국내외적으로 3G/4G 이동통신망 서비스가 본격화 되었으며, 이에 맞는 재난문자방송 서비스가 필요한 실정이다. 이에 본 논문에서는 이동통신망을 이용한 재난문자방송 서비스인 CBS의 국내외 동향과 표준안 등을 소개하며, 국내 CBS의 향후 나아갈 방향을 제시하고자 한다.

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Comparative analysis of technical standards schemes for each countries (국내외 기술기준 체계의 비교분석 연구)

  • 조평동
    • Journal of the Korea Institute of Information and Communication Engineering
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    • v.4 no.1
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    • pp.45-58
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    • 2000
  • Technical standards is directives for managing telecommunication network and also designing objectives for telecommunication network. The scope of technical standards varies from network environment of each countries but most countries compelled to observe the specified matters in technical standards. Generally, technical standards are the items extracted from national standards that must be followed by network providers. Technical standards is so very important to consist user's right and network operation that it is usually handled by national levels. In this paper, we analyze current status of technical standards for other countries and suggest some expected directions of technical standards schemes for domestic network.

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Intrabed Networks in a Patient Monitoring System (환자 모니터링 시스템에서의 통신 방식(I) : 인트라베드 통신망)

  • 우응제;박승훈;김경수;최근호;김승태;이희철;서재준;김형진
    • Journal of Biomedical Engineering Research
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    • v.18 no.4
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    • pp.373-380
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    • 1997
  • In this paper, we describe the intrabed network in a patient monitoring system we developed The intrabed network handles data communication between the main unit of a bedside patient monitor and parameter modules plugged in it. We designed the intrabed network based on RS-485 and HDLC protocol with 1 Mbps data rate. Message exchanges are implemented based on three data structures of packet frame. and stream. We present the specification and the performance of the data communication network for the developed patient monitor.

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Evaluation of the home power line channel's communication reliability in Internet operation of home appliances (전력선 통신망 네트워크상의 가전제품 통신 신뢰도 측정 및 분석에 관한 연구)

  • Ahn Nam-Ho;Choi Won-Sup;Chang Tae-Gyu;Kim Hoon
    • Journal of The Institute of Information and Telecommunication Facilities Engineering
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    • v.1 no.1
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    • pp.65-72
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    • 2002
  • 본 논문에서는 인터넷 가전제어를 위한 전력선 통신망 채널 특성 추정 기법을 제시하였고 실 거주 댁내 전력선 통신망의 채널 특성을 실측하여 통신 신뢰도를 평가하였다. 전력선 통신 기능을 내장한 동일 모델의 네트워크 가전제품 4종(에어컨, 냉장고, 세탁기, 전자렌지)을 실 거주 가정 100가구에 설치하여 전력선 통신망의 통신 신뢰도를 평가하였다. 통신 신뢰도의 평가 결과 통신 신뢰도가 90%이상이 나타나는 것을 확인하였다. 이것은 PLC모뎀이 장착된 가전제품의 활용과 고밀도 아파트 주거 지역에서 인터넷 가전제어를 위한 서비스가 상업적으로 이용할 수 있는 근거를 뒷받침한다고 할 수 있다.

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Wireless LAN-Based User Tracking Method and Experiment for Location-Based Services (위치기반서비스를 위한 무선 근거리통신망 기반의 사용자 추적방법 및 실험)

  • Yim, Jae-Geol;Joo, Jae-Hun;Jeong, Seun-Ghwan
    • The Journal of Society for e-Business Studies
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    • v.13 no.4
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    • pp.1-16
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    • 2008
  • LBS (Location Based Service) cannot be realized unless we can obtain the user's current location. Therefore, in order to realize indoor LBS, many researchers have been working on WLAN (Wireless Local Area Network) based indoor positioning and tracking. Meanwhile, Kalman filter has been widely used in the field of GPS based outdoor user tracking. The main purpose of this paper is proposing an extended Kalman filter method for indoor tracking. Our experimental results show that Kalman filter can be used to improve the accuracy of the measured tracks and the track can be further improved by making use of the map information.

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A Study on the Development of Star Type LAN (Star형 근거리 통신망 개발에 관한 연구)

  • 유황빈;이대영
    • The Journal of Korean Institute of Communications and Information Sciences
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    • v.13 no.2
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    • pp.160-170
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    • 1988
  • This paper describes the outboard NIU(Network Interface Unit) using microprocessor and the hardware and software of concentrator for constructing star typed LAN(Local Area Network) based on token ring method. The NIU adapter can adapter up to four parallel and serial typed terminals. Because it has PAD function on input output data, any type of terminals can be adapted. Since the concentrator has logical switching circuit which enables data to bypass the faulted NIU adapter, this network prevents communication break. When user transmits and receives data, the concentrator constructs star typed LAN which connct both transmitting and receiving sides. A s result, this network eliminated ring latency time in other NIU exculding transmitting and receiving NIU. So the throughput of this LAN is increased. Because this LAN system consists of several modultes according to it's function, the expansion of function or the modification of method is easy.

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Network Costing Model Alternatives for Reasonable Interconnection Charging Between Networks (합리적 접속료산정을 위한 통신망비용모형 수립방안)

  • 권수천
    • Journal of the Korea Institute of Information and Communication Engineering
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    • v.4 no.5
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    • pp.907-917
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    • 2000
  • In this paper the network costing model alternatives for reasonable interconnection charging are suggested. The current interconnection charge regimes is based on fully distributed costing method. Basically this method doesn't consider the common carrier's efficient network cost because it reflects the actual cost of network In this paper, 1 suggest the basic structure of the network costing model fur applications of incremental costing method that considers the efficient cost based on economics-prospective. And I classify network cost with capital cost and operating cost and analysis their reasonable costing methods.

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Implementation of AI-based Disaster Safety Communication Network protect (AI 기반 재난안전통신망 프로텍트 구현)

  • Bae, Se-jin;Ahn, Jung-hyun;Rhee, Jung-soo;Park, Jung-soo;Baik, Nam-kyun
    • Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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    • 2021.05a
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    • pp.655-656
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    • 2021
  • April 2021, Disaster Safety Communication Network services have been launched, but security functions are weak at the beginning of the service. The current security method for Android-based APP is using Google Protect's technology to detect malware. Malware is difficult to detect directly because there are various types, so by applying malware detection technology that combines AI and Google Protect technology to Disaster Safety Communication Networks, research on how to implement 'AI-based Disaster Satety Communication Network Protect'.

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A Study on the Digital Fishery Network for Advancing of Fishery for Wireless Data Communication Using SSB (어업의 선진화를 위한 디지털 어업통신망에 대한 연구)

  • Kim, Jeong-Nyun;Noh, Chang-Gyun;Jo, Hag-Hyun
    • Journal of Navigation and Port Research
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    • v.27 no.4
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    • pp.431-436
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    • 2003
  • It's about time we had to think an alternative to recover out insufficient fishery market caused by IMF locally as well as the fishery agreement on Japan and China. The Ministry of Maritime Affairs & Fisheries have planning the advancing fishery information integrated system for the fishing present condition, marine resource administration and applicability consideration. The fishery information communication system is build up to the raw data & process-network-content. The communication system must be small size, low cost and adapted SSB transceiver, that is using fishery shipping. In this paper We present digital data communication network to exchange information for fishery and safety between fishing ship and coast station in cheeper communication fee using SSB(single Side Band) in HF(High Frequency) band.