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REFERENCE LINKING PLATFORM OF KOREA S&T JOURNALS
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The Journal of the Korea institute of electronic communication sciences
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Journal DOI :
The Korea Institute of Electronic Communication Science
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Volume & Issues
Volume 1, Issue 2 - Dec 2006
Volume 1, Issue 1 - Oct 2006
Selecting the target year
Part of Information and Communication by occurrence of the earthquake
Kim, Jong-Yun ; Shin, Hyun-Sik ;
The Journal of the Korea institute of electronic communication sciences, volume 1, issue 2, 2006, Pages 95~101
Those days, not only Many peoples are killed and the wounded by effective of earthquake sea wave in Indonesia, but also our country effected by earthquake in adjoining sea to japan. At this point, preparation to earthquake and the point of quickly communication by happened earthquake. For this reason perceptible observation post are making so quickly communication system to zone by effective range of earthquake, and develope than more quality observation tool, contribute to keep citizens property and life to a minimum by earthquake damaged.
TCP Congestion Control of Transfer Rate-based in End-to-End Network Systems
Bae, Young-Geun ; Yoon, Chan-Ho ; Kim, Gwang-Jun ;
The Journal of the Korea institute of electronic communication sciences, volume 1, issue 2, 2006, Pages 102~109
In this paper, we improve the performance of bidirectional TCP connection over end-to-end network that uses transfer rate-based flow and congestion control. The sharing of a common buffer by TCP packets and acknowledgement has been known to result in an effect called ack compression, where acks of a connection arrive at the source bunched together, resulting in unfairness and degraded throughput. The degradation in throughput due to bidirectional traffic can be significant. For example, even in the simple case of symmetrical connections with adequate window size, the connection efficiency is improved about 20% for three levels of background traffic 2.5Mbps, 5.0Mbps and 7.5Mbps. Otherwise, the throughput of jitter is reduced about 50% because round trip delay time is smaller between source node and destination node. Also, we show that throughput curve is improved with connection rate algorithm which is proposed for TCP congestion avoidance as a function of aggressiveness threshold for three levels of background traffic 2.5Mbps, 5Mbps and 7.5Mbps.
A Study on the Policy Possibility for Public Journalism of korea Newspaper
Shin, Yun-Ho ;
The Journal of the Korea institute of electronic communication sciences, volume 1, issue 2, 2006, Pages 110~119
In this paper, the first online journalism in South Korea on the research itself in reality only have 3, only 2 cases in the United States the study of online journalism, in online journalism for the public to feel the necessity of research. These online agents not journalist the role of public journalism, the media can perform that role, we felt the need for the rest. In the process of the last 16 presidential election, as reported in South Korea of journalism online newspapers will want to research about the policy.
Improving QoS using Cellular-IP/PRC in Hospital Wireless Network
Kim, Sung-Hong ;
The Journal of the Korea institute of electronic communication sciences, volume 1, issue 2, 2006, Pages 120~126
In this paper, we propose for improving QoS in hospital wireless network using Cellular-IP/PRC(Paging Route Cache) with Paging Cache and Route Cache in Cellular-IP. Although the Cellular-IP/PRC technology is devised for mobile internet communication, it has its vulnerability in frequent handoff environment. This handoff state machine using differentiated handoff improves quality of services in Cellular-IP/PRC. Suggested algorithm shows better performance than existing technology in wireless mobile internet communication environment. When speech quality is secured considering increment of interference to receive in case of suppose that proposed acceptance method grooves base radio station capacity of transfer node is plenty, and most of contiguity cell transfer node was accepted at groove base radio station with a blow, groove base radio station new trench lake acceptance method based on transmission of a message electric power estimate of transfer node be. Do it so that may apply composing PC(Paging Cache) and RC(Routing Cache) that was used to manage paging and router in radio Internet network in integral management and all nodes as one PRC(Paging Router Cache), and add hand off state machine in transfer node so that can manage hand off of transfer node and Roaming state efficiently, and studies so that achieve connection function at node. Analyze benevolent person who influence on telephone traffic in system environment and forecasts each link currency rank and imbalance degree, forecast most close and important lake interception probability and lake falling off probability, GoS(Grade of Service), efficiency of cell capacity in QoS because applies algorithm proposing based on algorithm use gun send-receive electric power that judge by looking downward link whether currency book was limited and accepts or intercept lake and handles and displays QoS performance improvement.
A study of the communication infrastructure construction for u-City in Korea
Yoo, Jae-Duck ; Park, Hong-Tae ; Shin, Hyun-Sik ; Shin, Yun-Ho ;
The Journal of the Korea institute of electronic communication sciences, volume 1, issue 2, 2006, Pages 127~135
The Korea built successfully e-Korea based on the best of internet infrastructure which was constructed in the world. Continually, Korea is constructing u-City for twenty-first century to enhance the quality of life and to grow up IT industrial. But there is no standard model for u-City because three main builders, central government, local autonomous entities, and communication carriers have respectively their objects, targets and domains. If u-City would be constructed by the common infrastructure for ubiquitous communication, it will be possible to provide any ubiquitous services and compatibility. And the communication infrastructure has to be reflected on the first stage of city planning to reduce high cost for u-City construction. This paper mentions firstly the ranges of communication infrastructure and shows how to construct it each range.
A study on maritime telecommunication of practical use for pusan area
Shin, Hyun-Sik ;
The Journal of the Korea institute of electronic communication sciences, volume 1, issue 2, 2006, Pages 136~142
The information on maritime affairs in South Korea has been provided by ministry of maritime affairs and Fisheries, National Fisheries Research and Development Institute, Korea Ocean Research and Development Institute, National Oceanographic Research Development Institute, and the information on marine products and maritime environment has been lively producing by laborarories, universities and other private-run institute.