• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• v.9 no.2
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• pp.744-747
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• 2005

무선설비규칙은 전파법 제45조${\cdot}$제47조 및 제 58조의 규정에 의하여 무선설비와 전파응용설비의 기술기준 및 안전시설기준을 규정하고 있다. 무선기술의 급속한 발전과 전파이용환경의 변화를 고려하여 규칙에 대한 개정이 논의되고 있다. 본 논문에서는 국내의 전파 관련 법령 체계를 먼저 살펴보고 무선설비규칙에서 개정 논의되고 있는 공중선계 기술기준, 수신 설비의 감도 및 명료도 조건, 공중선전력의 허용편차 등에 대하여 국내외 규정 현황을 분석하여 관련 규정의 개선방안과 기대효과에 대하여 작성하고자 한다.

• The Korean Journal of Air & Space Law and Policy
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• v.21 no.1
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• pp.191-214
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• 2006

The right to the spectrum frequency and orbit is required for the broadcasting by satellite, whether the broadcaster might be given any license or authorization for the broadcasting. The reason is that the ITU Convention and Radio Regulation provide very specific and detailed rules regarding the utilization of the frequency spectrum and orbit. Outstanding issue arises as to the implementation process of the rules of international character. Domestic implementation of the Radio Regulation, in the way of letter to letter should be discouraged when the competitiveness of domestic industry vis-a-vis foreign competitor is taken into account.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2001.10a
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• pp.460-463
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• 2001

정보통신분야의 기술규제로서 통신인프라의 구축과 운영관리에 주요 지침으로 활용되고 있는 유ㆍ무선 및 방송분야의 정보통신기술기준은 변화의 과정을 거치고 있다. 2000년 무선분야를 대표하는 무선통신실비의기술기준규칙의 전면적 개정을 필두로 하여 2001년에는 유선분야를 대표하는 전기통신설비의기술기준에관한규칙의 개정이 이루어짐으로써 일련의 유무선분야 기술기준 개정의 큰틀은 마련되게 되었다. 이하에서는 2001년 개정된 전기통신설비의 기술기준에 관한 규칙의 주요내용을 살펴보고 향후 기술기준의 정립방향에 대하여 다루기로 한다.

• Electronics and Telecommunications Trends
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• v.19 no.4 s.88
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• pp.135-141
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• 2004

본 논문에서는 국내 무선설비규칙의 불요발사 규정과 관련하여 2003년도 세계전파통신회의(World Radiocommunication Conference-03)의 의제 중 하나인 불요발사에 관한 전파규칙의 내용을 소개한다. 최근 ITU-R은 WRC-03 전파규칙의 불요발사 규정에서 스퓨리어스 발사의 측정기준을 위하여 대역외영역과 스퓨리어스영역의 개념을 새롭게 정의한 후 두 영역 사이의 경계기준을 정하였다. 따라서 본 논문에서는 ITU-R의 불요발사 영역개념과 경계기준을 분석하고, 이를 바탕으로 무선설비규칙 제5조 스퓨리어스발사의 허용치에 관한 개정의견을 제시하였다.

• Journal of Internet Computing and Services
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• v.8 no.4
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• pp.1-9
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• 2007

Decision fusion in wireless sensor networks under non-Gaussian noise channels is studied. To consider the tail behavior noise distributions, we use a exponentially-tailed distribution as a wide class of noise distributions. Based on a canonical parallel fusion model with fading and noise channels, the likelihood ratio(LR) based fusion rule is considered as an optimal fusion rule under Neyman-Pearson criterion. With both high and low signal-to-noise ratio (SNR) approximation to the optimal rule, we obtain several suboptimal fusion rules. and we propose a simple fusion rule that provides robust detection performance with a minimum prior information, Performance evaluation for several fusion rules is peformed through simulation. Simulation results show the robustness of the Proposed simple fusion rule.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• v.9 no.1
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• pp.252-255
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• 2005

In this paper, we analysed the new techniques for maritime mobile communications replacing NBDP in MF/HF bandwidth. Several countries already have contributed to new proposals for new digital systems through international standardization organizations as ITU, IMO and IEC. ITU-R SG8B in ITU reviews the contributed documents and discusses about radio regulations relating new systems. Also COMSAR in IMO reviews member's countries opinions and statues for introducing new techniques and replacing NBDP.

• Journal of the Institute of Electronics Engineers of Korea TC
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• v.45 no.7
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• pp.53-61
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• 2008

Consider a typical wireless sensor network in which stem nodes form the backbone network of mesh topology while each stem node together with leaf nodes in its vicinity forms a subnetwork of star topology. In such a wireless sensor network, we must heed the following when we design a MAC scheme supporting the packet delivery from a leaf node to a stem node. First, leaf nodes are usually battery-powered and it is difficult to change or recharge their batteries. Secondly, a wireless sensor network is often deployed to collect and update data periodically. Late delivery of a data segment by a sensor node causes the sink node to defer data processing and the data segment itself to be obsolete. Thirdly, extensive signaling is extremely limited and complex computation is hardly supported. Taking account of these facts, a MAC scheme must be able to save energy and support timeliness in packet delivery while being simple and robust as well. In this paper, we propose a version of ALOHA as a MAC scheme for a wireless sensor network. While conserving the simplicity and robustness of the original version of ALOHA, the proposed version of ALOHA possesses a distinctive feature that a sensor node decides between stop and continuation prior to each delivery attempt for a packet. Such a decision needs a stopping rule and we suggest a Bayes stopping rule. Note that a Bayes stopping rule minimizes the Bayes risk which reflects the energy, timeliness and throughput losses. Also, a Bayes stopping rule is practical since a sensor node makes a decision only using its own history of delivery attempt results and the prior information about the failure in delivery attempt. Numerical examples confirm that the proposed version of ALOHA employing a Bayes stopping rule is a useful MAC scheme in the severe environment of wireless sensor network.

• Electronics and Telecommunications Trends
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• v.15 no.2 s.62
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• pp.66-72
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• 2000

기술기준은 전파 이용질서를 확립하여 공공의 이익을 추구하는 데 목적이 있다. 본 고에서는 국가간의 상호인정(MRA) 추진으로 각국의 기술기준을 상호조화 시키는 세계적인 추세에 대응하기 위하여 국내 정보통신 기술기준에 대한 전반적인 재검토를 통하여 기술기준을 이용자 편익 및 권익을 보호할 수 있는 무선설비규칙의 개선 방향에 대하여 논의하고자 한다. 이러한 체계 개선을 통하여 국가의 경쟁력을 강화하고 향후 국제 통신시장에 국제적인 신뢰도를 높이는 데 기여할 수 있을 것이다.

• 정보화사회
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• s.114
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• pp.32-38
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• 1997

정보통신부는 지난해 12월 단행된 전파법 개정의 후속조치로 무선설비형식검정제도와 전자파장해검정제도를 등록제로 전환하는 내용의 관련 규칙을 5월 8일 개정하였다. 다음은 그 내용의 해설이다.

• Journal of the Institute of Electronics Engineers of Korea TC
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• v.46 no.5
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• pp.78-87
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• 2009

In the IEEE 802.16 Wireless MAN standard, the best effort service class is ranked on the lowest position in priority and is assisted by a MAC scheme based on reservation ALOHA. In such a MAC scheme, a collision among the requests is unavoidable so that the standard adopted a binary exponential back-off rule to arbitrate a collision. Aiming at improving throughput performance, we present two generic collision arbitration rules based on p-persistence rule, (identified as pristine and metamorphosed rules), as alternatives in a wireless MAN. For each of these rules, we then develop an analytical method to calculate an approximate value of saturated throughput. In comparison with simulation results, we confirm the high accuracy of the analytical method. Also, the pristine and metamorphosed rules are observed to exhibit higher saturated throughput compared with the binary exponential back-off rule.