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등록일 19.10.09 조회수 12
제 목
[용역보고서] 공공용 주파수 할당 지정 용역
첨부파일
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목 차
1. 연구의 목적 및 범위 ······················································································································ 8
1.1 연구의 목적 ································································································································ 8
1.2 연구의 범위 ································································································································ 8
2. 공공용 주파수 이용계획서(전파법 시행규칙 제6조의3 별표 제6호의9서식) ···················· 9
2.1 이용계획서 ·································································································································· 9
2.2 붙임 문서 ································································································································· 19
2.2.1 주파수 소요량 산출근거에 관한 서식 ········································································· 19
2.2.2 연근해 어선 원거리 디지털 통신망 서비스 내용 ····················································· 28
3. 공공용 주파수 이용계획서 관련 분석 ····················································································· 30
3.1 e-내비게이션(e-Navigation) ·································································································· 30
3.1.1 기본 개념 ··························································································································· 30
3.1.2 도입 배경 ··························································································································· 30
3.1.3 필수 서비스 ······················································································································· 31
3.1.4 기대 효과 ··························································································································· 32
3.1.5 시장 전망 ··························································································································· 32
3.2 한국형 e-내비게이션 ·············································································································· 33
3.2.1 개요 ····································································································································· 33
3.2.2 대응 전략 ··························································································································· 34
3.2.3 ‘한국형 e-내비게이션’ 사업 ··························································································· 34
3.3 Digital-HF(D-HF) 통신 시스템 ····························································································· 35
3.3.1 개요 ····································································································································· 35
3.3.2 D-HF 해안국 통신 시스템 ····························································································· 38
3.3.3 D-HF 선박국 통신 시스템 ····························································································· 45
3.4 공공용 주파수 이용계획서의 기술적 기본사항 분석 ····················································· 46
3.4.1 HF 대역 전파전파 특성 ·································································································· 46
3.4.2 OFDM 변복조 ··················································································································· 49
3.4.3 주파수 재사용(reuse) 및 주파수 공동사용(sharing) ················································· 51

3.4.4 D-HF 통신망 주파수 소요량 ························································································· 53
3.4.5 D-HF 통신망 수요대역 분배 현황 검토 ····································································· 54
3.4.6 기대효과 ····························································································································· 58
4. 참고문헌 ········································································································································· 60

표 목 차
<표 3-1> 한국형 e-내비게이션 주요 기능 ················································································· 34
<표 3-2> 육상-선박 간 차세대 디지털 해상무선통신체계 구성(해역별) ····························· 36
<표 3-3> QAM 변조방식에 따른 채널 데이터 전송 속도 ····················································· 50
<표 3-4> D-HF 주파수 소요량 산출 내역 ················································································· 54
<표 3-5> 해상 모바일 서비스 주파수 소요량 산출 ································································· 56

그 림 목 차
[그림 3-1] 차세대 선박운항체계 개요도 ······················································································ 30
[그림 3-2] IMO e-내비게이션 정의 ······························································································ 32
[그림 3-3] e-내비게이션 개념도 ···································································································· 33
[그림 3-4] 해상 무선 디지털 통신 기술의 분류 ········································································ 35
[그림 3-5] D-HF 통신 시스템 구성도 ··························································································· 36
[그림 3-6] D-HF 통신 시스템 프로토콜 스택 ············································································· 37
[그림 3-7] D-HF 통신망 무선설비 예 ··························································································· 37
[그림 3-8] 정보송신국(ISS) 및 수신국(IRS) 송수신 타이밍 ······················································ 39
[그림 3-9] 정보송신국(ISS) 정보 포맷 ·························································································· 40
[그림 3-10] 정보수신국(IRS) 정보 포맷 ························································································ 40
[그림 3-11] 정보수신국(IRS)의 전송 응답코드 ············································································ 40
[그림 3-12] 기저대역 신호의 주파수 스펙트럼 ·········································································· 41
[그림 3-13] 통과대역 신호의 주파수 스펙트럼 ·········································································· 41
[그림 3-14] D-HF 신호의 스펙트럼 마스크 ················································································ 42
[그림 3-15] 해안국을 포함한 D-HF 글로벌 링크 네트워크 블럭도 ······································ 43
[그림 3-16] 해안국 기능 블럭도 ···································································································· 43
[그림 3-17] D-HF 해안국 기능 블럭도 ························································································ 44
[그림 3-18] D-HF 선박국 블럭도 ·································································································· 45
[그림 3-19] HF 대역 전파전파 특성 ····························································································· 47
[그림 3-20] 낮과 밤의 전리층의 변화 ·························································································· 47
[그림 3-21] HF 대역 채널 모델 ····································································································· 48
[그림 3-22] HF 대역 무선전송 채널의 서브채널 모델 대표화 ··············································· 48
[그림 3-23] 디지털 통신 시스템 블록도 ······················································································ 49
[그림 3-24] 기저대역 변조 방식의 종류 ······················································································ 50
[그림 3-25] OFDM 전송 방법의 개념 ·························································································· 51
[그림 3-26] D-HF 주파수 배치 예 ································································································ 52
[그림 3-27] 4 MHz 대역의 어업통신용 주파수 분배 현황 ····················································· 54
[그림 3-28] 6 MHz 대역의 어업통신용 주파수 분배 현황 ····················································· 55

[그림 3-29] 8 MHz 대역의 어업통신용 주파수 분배 현황 ····················································· 55
[그림 3-30] 12 MHz 대역의 어업통신용 주파수 분배 현황 ··················································· 55
[그림 3-31] 4 MHz 대역의 D-HF 어업통신용 추가 주파수 할당 예시 ································ 57
[그림 3-32] 6 MHz 대역의 D-HF 어업통신용 추가 주파수 할당 예시 ································ 57
[그림 3-33] 8 MHz 대역의 D-HF 어업통신용 추가 주파수 할당 예시 ································ 58
[그림 3-34] 12 MHz 대역의 D-HF 어업통신용 추가 주파수 할당 예시 ······························ 58