• Journal of Digital Convergence
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• v.7 no.3
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• pp.1-11
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• 2009

In this paper I examined economies and implications of "Net Neutrality" and Internet Freedom. It is argued that mandating Net Neutrality would be likely to reduce economic welfare. Instead, the government should focus on creating competition in the broadband market by liberalizing more spectrum and reducing entry barriers created by certain local regulations. In cases where a broadband provider can exercise market power the government should use its antitrust enforcement authority to police anti-competition behavior. To assure Net Neutrality, it is needed to make sure of fair competition and to facilitate flexible prices. Especially it is needed to invest consistently to the sector of Network.

• Electronics and Telecommunications Trends
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• v.21 no.2 s.98
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• pp.41-52
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• 2006

전파를 이용한 서비스가 사회전반에서 이용되고 관련 기술들이 발전함에 따라 유비쿼터스 사회의 도래를 기대할 수 있게 되었다. 유비쿼터스 사회에서는 인간의 제반활동이 통신 인프라를 기반으로 제공될 것이며, 이의 기반이 되는 주파수에 대한 수요가 급격하게 증가하게 된다. 그러나 주파수 자원은 활용가능성 측면에서 희소자원으로 인식되고 있어 적기, 적소에 적절한 양의 주파수를 공급하는 것이 매우 어려운 과제가 되고있다. 이러한 주파수 부족현상을 기술적인 측면에서 타개하고자 주파수 공유기술의 개발이 활발히 이루어지고 있는데, 주파수 공유기술이 적용되어 효과를 발휘하기 위해서는 제도적 기반이 마련되어야 한다. 본 연구에서는 주파수 공유기술의 발전 방향을 서술하고, 주요국의 주파수 정책에 대해 살펴봄으로써 국내 전파정책수립에 필요한 시사점을 도출하고자 한다.

• Electronics and Telecommunications Trends
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• v.26 no.2
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• pp.1-13
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• 2011

최근 우리나라 사회의 각 분야에 걸쳐 Smart Korea를 구축하고자 하는 노력이 활발히 이루어지고 있다. 이는 각 개인뿐만 아니라 기기들도 지능적인 사고를 통해 서로 유기적으로 연결될 수 있는 체제를 의미하는데, 국가 전체적인 관점에서 Smart Korea가 구현되기 위해서는 각 개인의 관점에서의 똑똑한 삶인 Smart Life가 구현되어야 한다. 이러한 Smart Korea와 Smart Life의 구현을 위해서는 무선 통신을 위한 필수적 자원인 전파자원의 효율적인 활용이 기술적인 측면에서 뿐만 아니라 정책적인 측면에서도 중요하다. 본 고에서는 먼저 Smart Korea와 Smart Life의 개념을 살펴보고, 각각의 구현을 위한 전파자원의 이용정책 동향에 대해 기술하고자 한다.

• Journal of The Korea Institute of Healthcare Architecture
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• v.10 no.2
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• pp.7-18
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• 2004

As a society advances and develops more rapidly, there is a corresponding increase in an aging population; and therefore, transportation and transportation needs develop in a complicated way. In these times, medical rehabilitation services are required and the demands for these services will increase as time passes. Moreover, the scope of disability as defined by the government has been expanded owing to the welfare policy for the disabled. Therefore, the number of disabled who require medical services is on the rise. Along with an increase in medical rehabilitation demands, the necessity for medical rehabilitation increases as well and its role becomes more diverse on a wider spectrum. However, architectural studies on rehabilitation facilities have been insufficient and there are many problems currently in facilities operations. This study aims to present a spatial organization system along with required space that would form the basis for the most effective spatial plan and facility operation for rehabilitation hospitals.

• Knowledge Management Research
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• v.24 no.3
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• pp.195-215
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• 2023

In the telecommunications service industry, until now, it has been possible for Network Operators (NOs) to secure a competitive advantage to increase subscribers and profits through network investment. However, amid a big change to digital economy, network investment fails to lead to increase profits. These days platform companies without holing network infrastructure have a more competitive advantage and take more profits. This makes NOs gradually lose interest in network investment. The purpose of this paper is to find policy measures to promote network investment in digital economy. Specifically, we identify the factors influencing the network investment and promising policy measures energizing the investment, and then analyze their priorities and derive policy implications through Analytic Hierarchy Process (AHP) and Analytic Network Process (ANP). The results of this paper show that market competition is more preferred to public intervention in promoting network investment. However, in order to guarantee and expand the universal access to network, it is necessary to consider expanding the role of the public, focusing on non-economic areas.

• The Journal of Korean Institute of Communications and Information Sciences
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• v.38C no.4
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• pp.402-407
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• 2013

In this paper, we consider an interference scenario and interference simulation method of intra-wireless vessel communications using SEAMCAT (Spectrum Engineering Advanced Monte-Carlo Analysis) simulator. The interference between electromagnetic equipment and low power radio apparatus can deteriorate a stability of vessel system and it is necessary to analyze the interference probability between radio devices. The proposed simulation method in the 13.56MHz ISM frequency band shows that the interference effect can be minimized when the distance between the devices is greater than 4.7m and 2.7m in case that the victim receiver (VR) are RFID and remote control(RC) toy, respectively. The proposed interference scenario and simulation method are expected to be helpful in the interference probability analysis and regulation policy in the ISM frequency band.

• The Journal of Korean Institute of Electromagnetic Engineering and Science
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• v.23 no.8
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• pp.888-899
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• 2012

In this paper, we present refarming plans and discuss about Radio Waves Law improvements to promote the efficient use of the 1.8 GHz(3GPP band 3) which is emerging as the best prime band for LTE-FDD service. We think it is important to make use of the entire band for mobile use in accordance with contiguity requirement, especially for LTE such as European countries, which is currently separated between different uses. We present two options with illustrative examples to enable that objective. And we identify several provisions in the Radio Waves Law expected to cause controversy when activates one between two options as the policy, and discuss improvements of those.

• Journal of Digital Convergence
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• v.19 no.11
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• pp.341-349
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• 2021

We studies to verify results similar to those of previous experiments, and their potential as a lighting device through optical characteristics experiments and resonance and optical characteristics simulations of array devices. The photonic quantum ring (PQR) device having a mesa diameter of 40 ㎛ and an internal hole diameter of 3 ㎛ was fabricated. Through the near-field observation of the fabricated device, it was found that the PQR device operates even at ㎂, and also that the mesa and hole devices are driven independently of each other. As a result of measuring the wavelength spectrum of the device according to the location, the coupling phenomenon due to mesa and holes was confirmed.

• Journal of Digital Convergence
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• v.16 no.11
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• pp.411-418
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• 2018

The purpose of this study was to estimate the current status and trends of healthcare utilization among people with ASD. Using National Health Insurance open database, from 2010 to 2017. We analyzed the treatment prevalence for people with ASD, the pattern of healthcare utilization, the difference in medical care utilization according to age, and the type and location of main medical institutions. The main results of the study are as follows: First, the medical utilization has been continuously increasing from 2010 to 2017. The total amount of medical utilization is increased by 50% in 2017 compared to 2010, and the treatment prevalence was estimated to be 79.1% in 2017 and medical uses for the next three years is also increasing. Second, the pattern of medical care utilization varied widely according to age, especially after 20 years of age. Third, the types of medical institutions that were mainly used were 45.6% in the medical clinic and 35.9% in Seoul. The results of this study can be used as a minimum reference point of evaluating the effectiveness of government policy on future autistic disorders. However, further studies are required to increase the prevalence of treatment for autistic patients and to find out the difference in medical use according to age.

• The Journal of Korean Institute of Communications and Information Sciences
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• v.39B no.11
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• pp.779-789
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• 2014

Cognitive radio (CR) technology based on geo-location database access approach and/or wideband spectrum sensing approach is absolutely vital in order to recognize available frequency bands in white spaces (WSs), and efficiently utilize shared spectrums. This paper presents a new structure for the TVWS database access protocol implementation based on Internet Engineering Task Force (IETF) Protocol to Access WS database (PAWS). A wideband compressive spectrum sensing (WCSS) scheme using a modulated wideband converter is also proposed for the TVWS utilization. The developed database access protocol technology which is adopted in both the TV band device (TVBD) and the TVWS database operates well in the TV frequency bands. The proposed WCSS shows a stable performance in false alarm probability irrespective of noise variance estimation error as well as provides signal detection probabilities greater than 95%. This paper also investigates Federal Communications Commision (FCC) regulatory requirements of TVWS database as well as European Telecommunications Standards Institute (ETSI) policy related to TVWS database. A standardized protocol to achieve interoperability among multiple TVBDs and TVWS databases, which is currently prepared in the IETF, is discussed.