• The Proceeding of the Korean Institute of Electromagnetic Engineering and Science
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• v.17 no.3 s.59
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• pp.63-73
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• 2006

Auctions have been traditionally used to find the current price of goods when little is known about their true value. A special auction methodology, called a 'simultaneous multiple round auction', is available to auction radiofrequency spectrum where all lots are simultaneously on of for over multiple rounds of bidding. This type of auction is especially useful when there are lots that are of essentially equal value and substitutable, except that different bidders may prefer different combinations of lots. By using multiple rounds, a bidder has the opportunity to gather information concerning the value of individual lots and can change strategy by shifting the bidding to another preferred combination if one combination becomes too expensive. Information is released in three main ways during an auction: Bidder Status; High Bids; and Bandwidth Value.

• Journal of Broadcast Engineering
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• v.17 no.6
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• pp.1080-1090
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• 2012

This study investigates the users' preference of frequency reallocation and frequency auction after digital transition of terrestrial broadcasting and it focuses on the relationships between media using pattern, reception environment of broadcasting telecommunication, and expectation for the universal service and requirement for the public interest. The results show that the longer DMB viewing hours, people prefer to frequency allocation for the telecommunication side. The technical aspects such as perception on the reception environment of broadcasting don't make effect on the users' preference of frequency allocation. In addition, the more people think the universal service of terrestrial broadcasting important, the more people think it unnecessary to adopt auction system to the broadcasting frequency. These results give implication that it is the most basic condition to improve the reception environment in order to accomplish universal service duty of terrestrial broadcasting.

• KSII Transactions on Internet and Information Systems (TIIS)
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• v.12 no.4
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• pp.1638-1654
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• 2018

The heterogeneous network (HetNet) has been one of the key technologies in Long Term Evolution-Advanced (LTE-A) with growing capacity and coverage demands. However, the introduction of femtocells has brought serious co-layer interference and cross-layer interference, which has been a major factor affecting system throughput. It is generally acknowledged that the resource allocation has significant impact on suppressing interference and improving the system performance. In this paper, we propose a hybrid-clustering algorithm based on the $Mat{\acute{e}}rn$ hard-core process (MHP) to restrain two kinds of co-channel interference in the HetNet. As the impracticality of the hexagonal grid model and the homogeneous Poisson point process model whose points distribute completely randomly to establish the system model. The HetNet model based on the MHP is adopted to satisfy the negative correlation distribution of base stations in this paper. Base on the system model, the spectrum sharing problem with restricted spectrum resources is further analyzed. On the basis of location information and the interference relation of base stations, a hybrid clustering method, which takes into accounts the fairness of two types of base stations is firstly proposed. Then, auction mechanism is discussed to achieve the spectrum sharing inside each cluster, avoiding the spectrum resource waste. Through combining the clustering theory and auction mechanism, the proposed novel algorithm can be applied to restrain the cross-layer interference and co-layer interference of HetNet, which has a high density of base stations. Simulation results show that spectral efficiency and system throughput increase to a certain degree.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2013.05a
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• pp.474-477
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• 2013

As the market-based spectrum policy is introduced, an interest in the economic value of the frequency is increasing. Research and practical applications concerning the methodology for the estimation of the economic value of the frequency and its determinants are actively engaged, which are used for setting a reserve price and bid price of spectrum auction and a spectrum clearance cost. In this study, by the analysis of the spectrum valuation methodology, we derive the changes in the factors affecting the valuation and propose to apply improved. In the model frequency value is consist of technical value, commercial value and strategic value, we find the dynamics of fluctuation factors and suggest how to apply them to spectrum policy.

• The Journal of Korean Institute of Communications and Information Sciences
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• v.34 no.11B
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• pp.1261-1271
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• 2009

Emergence of new mobile communication services has generated new demand for spectrum. Because spectrum is a scarce public resource, demand for spectrum would exceed supply. As the demand for spectrum grows, the spectrum management policy becomes one of the most important issues in mobile telecommunications industry. Huge license charges for spectrum usage may obstruct the growth of mobile telecommunications industry. We analyze spectrum charges by international comparison for the case of 3G mobile telecommunication spectrum assignment. There are mainly two types of methods in spectrum assignment of 3G service, one is the auction and the other is the beauty contest. This article aims to analyze factors which influence on spectrum charges and to study the characteristic of spectrum charges of some selected countries. This study suggests the multiple regression model about spectrum charges.

• The Journal of Korean Institute of Electromagnetic Engineering and Science
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• v.29 no.3
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• pp.200-213
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• 2018

Herein, we survey the current state of the recent legal revision of the Citizens Broadband Radio Service, a type of city spectrum-sharing service used in the United States of America, and the introduction of spectrum sharing in the frequency ranging from 3.8~4.2 GHz, based on the United Kingdom framework for spectrum sharing. Specifically, the subjects of topical interest, including the radio station licensing of the spectrum-sharing service system face-to-face multitier user structure, regional frequency allocation, and applicable service types, are discussed. Furthermore, factors to be considered while selecting candidate channels for joint use are suggested, emphasizing their importance for introducing spectrum sharing in Korea and revitalizing the related industrial sectors. In addition, methods of introducing a radio station license system for spectrum sharing, techniques of introducing incentive auctions, and the types of services where spectrum sharing is applicable are discussed.

• The Journal of Korean Institute of Electromagnetic Engineering and Science
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• v.24 no.8
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• pp.805-819
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• 2013

In this paper, we analyze the paradigm shift of radio policy with the development of radio technology. In particular, we propose the definition of spectrum sharing, which is now omitted in the Korean radio law, and analyze the category of spectrum sharing depending on the licensing regime. Also we propose to extend the spectrum usage right, which defines only exclusive usage rights by spectrum auction in the Korean radio law, to all the stations which use radio spectrum and to restructure the Korean radio law.

• Electronics and Telecommunications Trends
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• v.30 no.2
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• pp.115-124
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• 2015

본고는 2010년에 이어 두 번째로 대규모 멀티밴드 동시경매를 시행하려고 준비해온 독일의 경매 계획 추진과정과 정책동향에 대하여 분석 정리하였다. 본고의 독일 사례 분석결과에 따르면, 대규모 멀티밴드 동시경매는 장점이 많기 때문에 국내의 경우에도 특히 저대역(700MHz 포함)과 고대역 간 밴드 시너지를 높일 수 있는 멀티밴드 동시경매를 정책화하는 것이 효율적인 주파수 활용을 위해 타당할 것이다.

• The Journal of Korean Institute of Communications and Information Sciences
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• v.39C no.9
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• pp.774-781
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• 2014

Demand for spectrum resources is increasing with the development of mobile telecommunications and so is their economic value. As a way to enhance the economic efficiency of use of spectrum resources, many countries have focused on the management of public and broadcasting spectrums which have traditionally been undercharged compared to their economic values. In this paper, we discuss the economic value valuation of the frequencies for the fisheries communications. The estimated value is the average value of the total equipment cost of the mobile communication services that their service coverage is nation-wide, and the value that adjusted the auction price for the LTE service frequencies in 2011 to the characteristics of fisheries communications.

• Electronics and Telecommunications Trends
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• v.24 no.2
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• pp.67-76
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• 2009

이동통신서비스를 중심으로 하는 무선서비스 시장의 급성장에 따른 주파수 수요의 폭발적 증대는 명령 통제에 의한 주파수 할당체계의 수정을 요구하게 되고, 전세계적으로 경쟁적 수요가 있는 주파수 자원에 대해서는 시장기반의 할당방식인 경매제 도입이 확산되고 있다. 국내에서도 주파수 할당시 시장기반의 할당방식을 적용하기 위하여 2008년 하반기 공청회와 2009년 상반기 입법 과정 등을 거쳐 기존 심사할당, 대가할당 방식에 가격경쟁 방식을 추가해 경매제 도입 근거를 만드려고 하고 있다. 이에 따라 주파수 경매제는 빠르면 2009년부터라도 적용이 가능할 전망이다. 그러나 주파수 경매제 도입 관련한 논의가 여전히 갑론을박 중이며, 해외의 실증 사례에서도 경매제 도입의 부작용이 많이 나타나고 있으며, 경매제 도입의 장점을 적극 살리기 위한 방향으로 개선되고 있다. 본 고에서는 주파수 경매제 도입과 관련한 주요 쟁점사항을 찬성입장과 반대입장으로 구분하여 고찰하도록 하였다. 그리고 해외의 주요 경매제 도입 사례를 살펴보고, 이를 통해 국내 경매제 도입시 시사점을 찾아보고자 하였다.