5G 기술과 활용 (5G technology and services) - 2019.05.11Hakyong Kim
본 자료는 모 기업에서 강의한 자료를 추가로 업데이트하여 공유하는 것입니다. 5G 기술이 무엇이며 어떻게 발전해 왔는지를 소개하고, 5G 서비스의 주요 특징인 고속, 저지연, 대용량 특성에 대해 주요 응용 사례와 함께 소개합니다. 또한, 이러한 특성들을 가능하게 하는 5G 구현기술들에 대해 소개하고 있습니다. 다소 구체적인 내용들도 포함되어 있기는 하지만, 대부분 구현기술들을 개념적으로 이해할 수 있도록 정리해 놓았습니다. 그리고, 마지막으로는 5G 서비스 제공 현황을 소개하고 있습니다.
ITS 6차 메인 세미나_근거리무선통신(정현정, 오진영, 권성현, 김용겸 | 이동휘)
WiFi의 현재와 미래(15.11.20)
고려대학교 정보기술경영학회 : ITS
Web: http://itsociety.co.kr/
Mail: president@itsociety.co.kr
5G 기술과 활용 (5G technology and services) - 2019.05.11Hakyong Kim
본 자료는 모 기업에서 강의한 자료를 추가로 업데이트하여 공유하는 것입니다. 5G 기술이 무엇이며 어떻게 발전해 왔는지를 소개하고, 5G 서비스의 주요 특징인 고속, 저지연, 대용량 특성에 대해 주요 응용 사례와 함께 소개합니다. 또한, 이러한 특성들을 가능하게 하는 5G 구현기술들에 대해 소개하고 있습니다. 다소 구체적인 내용들도 포함되어 있기는 하지만, 대부분 구현기술들을 개념적으로 이해할 수 있도록 정리해 놓았습니다. 그리고, 마지막으로는 5G 서비스 제공 현황을 소개하고 있습니다.
ITS 6차 메인 세미나_근거리무선통신(정현정, 오진영, 권성현, 김용겸 | 이동휘)
WiFi의 현재와 미래(15.11.20)
고려대학교 정보기술경영학회 : ITS
Web: http://itsociety.co.kr/
Mail: president@itsociety.co.kr
1. 배경 1
1.1. 표준화 및 기술 동향 1
1.2. 국내 재난망 동향 2
1.2.1. 국내 재난망 추진 과정 2
1.2.2. 국내 재난망 구축 현황 (2014년 12월) 2
1.2.3. 삼성전자의 재난망 구축 3
1.2.4. 주요 이슈 4
1.3. 일본 재난망 동향 4
1.4. 미국의 PS-LTE 정책 동향 4
1.5. 미국의 PS-LTE 기술 동향 5
1.5.1. 요구 사항 5
1.5.2. 공공 민간 협력 운영 모델 6
1.6. MVNO 기술 동향 8
1.7. MVNO 필요성 8
1.8. MVNO 타입 8
1.9. MVNO 사업 동향 9
1.9.1. 한국 9
1.9.2. 미국 9
1.9.3. 유럽 10
1.9.4. 구글 10
1.9.5. 애플 10
2. 목표 11
2.1 망 구성 11
2.2 당사의 기술 보유 11
2.3 기술 요구 사항과 시장 수요의 괴리 12
2.4 당사 기술의 제한 사항 12
2.5 제안하는 개발 목표 12
3. 방안 12
4. 일정 12
5. 비용 12
1. 배경 1
1.1. 표준화 및 기술 동향 1
1.2. 국내 재난망 동향 2
1.2.1. 국내 재난망 추진 과정 2
1.2.2. 국내 재난망 구축 현황 (2014년 12월) 2
1.2.3. 삼성전자의 재난망 구축 3
1.2.4. 주요 이슈 4
1.3. 일본 재난망 동향 4
1.4. 미국의 PS-LTE 정책 동향 4
1.5. 미국의 PS-LTE 기술 동향 5
1.5.1. 요구 사항 5
1.5.2. 공공 민간 협력 운영 모델 6
1.6. MVNO 기술 동향 8
1.7. MVNO 필요성 8
1.8. MVNO 타입 8
1.9. MVNO 사업 동향 9
1.9.1. 한국 9
1.9.2. 미국 9
1.9.3. 유럽 10
1.9.4. 구글 10
1.9.5. 애플 10
2. 목표 11
2.1 망 구성 11
2.2 당사의 기술 보유 11
2.3 기술 요구 사항과 시장 수요의 괴리 12
2.4 당사 기술의 제한 사항 12
2.5 제안하는 개발 목표 12
3. 방안 12
4. 일정 12
5. 비용 12
This document summarizes distributed performing arts events over the Internet from 2003 to 2006. It discusses early cyber performances between sites in Korea, Japan, and the US. Later events included high-quality synchronized dance and music performances between Seoul and New York in 2005, and between Seoul, Canada, and Barcelona in 2006. The technical aspects, such as networks, equipment, and traffic monitoring, required for real-time synchronized performances across continents are also described.
This document summarizes the growth of the APAN backbone network from 1996 to 2019. It describes how APAN started as a loosely coupled community without owning its own links, and traces the development and expansion of key backbone links between countries in Asia and to other regions. These included the APII, TEIN, and TransPAC networks, which grew from Mbps to multi-100Gbps capacities over time. The document also discusses opportunities for future North APAN projects, submarine cable maps, performance monitoring, and expanding APAN collaboration.
This document outlines a planned networked music and dance performance between four sites: Chiang Mai, Thailand; Barcelona, Spain; Salvador, Brazil; and Daejeon, South Korea. The performance will involve live interaction between dancers and audiences at each site, requiring high-quality video streaming between locations. Precise network monitoring and synchronization of audio and video streams will be needed. Technical details describe the software and hardware that will be used, including the Arthron program for managing multimedia streams and a proposed method for remotely synchronizing music between sites.
This document summarizes the activities of the eCulture Working Group session at the 37th APAN meeting, including a cyber performance between universities in Indonesia and Malaysia. On January 21st, 2014 there was a cyber performance connecting ITB university in Indonesia and MyREN in Malaysia. On January 22nd, there were 5 presentations on topics including social media, data management, and digital asset management. In the evening, there was an eCulture working group meeting to discuss the cyber performance and plans for one at the 38th APAN meeting in Taiwan. Certificates were also awarded for previous cyber performances at the 36th and 37th APAN meetings.
This document provides details about a collaborative performance between artists located in Prague, Barcelona, Miami, and Nantou, Taiwan. The performance will involve a piano trio in Prague, a dancer in Barcelona, a cellist in Miami, and Seediq Bale dancers in Nantou, who will all perform simultaneously. The performances will be networked in real-time and viewed on a large projection screen in Nantou. The event aims to overcome challenges of networked performances, such as latency, through the use of specialized audio and video transmission software and high-speed networks connecting the four locations.
This document provides details about a multi-continent networked dance performance taking place on August 21, 2013. Artists and performers from Prague, Barcelona, Salvador, and Daejeon will perform simultaneously at scheduled times. The performance will use motion capture technology and video transmission to allow interactive dancing between sites in real-time, despite network delays. Audience members can watch the synchronized global performance online.
This document discusses past cyber performances and pre-tests for streaming 3D video over networks. It describes two pre-tests conducted on August 25, 2011 in New Delhi using different video cameras, streaming software, resolutions, traffic levels, and delay times. Specifications are provided for the cameras, software, and results of each test.
Professor Kwangyun Wohn
Professor BonCheol Goo
APAN Secretariat
Co-organizer: APAN
Venue
Cinnamon Grand Hotel
Colombo, Sri Lanka
Venue
Cyber Lab, KAIST
Daejeon, Korea
This document provides details on a planned networked music and dance performance between sites in Barcelona, Salvador, Chiang Mai, and Daejeon on February 13, 2012. It outlines the performance infrastructure including hardware, software, and network requirements to support live transmission of audio and video between the sites. Precise timing will be achieved through measuring latency and remotely controlling the start of music performances at each site.
The document proposes a recursive addressing and routing scheme called NARA (Network Architecture with Recursive Addressing). Under NARA:
- Nodes are assigned recursive identifiers that include their site and subnet location.
- Interior routing occurs based on node identifiers, while exterior routing occurs on site addresses.
- A mapping process translates between node identifiers and network addresses to enable scalable routing.
- This approach allows for inherently scalable routing without address depletion or table explosion, as well as fast host/network mobility and multi-homing capabilities.
This document proposes a Network Architecture with Recursive Addressing (NARA). It includes the following key points:
1. NARA scales the internet by using local node addresses within autonomous sites and global site addresses for exterior routing between sites.
2. Interior routing uses local node addresses while exterior routing uses global site addresses, keeping the two orthogonal.
3. This approach allows for recursive scalability without address depletion or routing table explosion while enabling fast host and network mobility.
This document provides a short history of internet and ICT development in Korea from the 1980s to present. It describes key milestones and technologies such as the introduction of TDX systems in the 1980s, development of DRAM chips, adoption of ISDN, introduction of broadband internet via DSL and cable in the 1990s and 2000s, rollout of wireless technologies like WiBro and LTE, and ongoing work to deliver fiber internet speeds of 1Gbps. It also compares Korea's trajectory from ISDN to DSL to FTTC to FTTH with Japan's and notes Korea is catching up in fiber infrastructure.
This document discusses issues with Loc/ID separation approaches and proposes alternatives. It notes the explosion of routing tables due to IP address semantic overloading and examines Loc/ID separation as a potential solution. However, it argues Loc/ID approaches still result in renumbering issues during migration between networks. The document suggests using node IDs rather than interface addresses as End IDs and leveraging ISIS for routing within sites to avoid issues like those in Mobile IP. It questions whether End IDs need to be globally unique and proposes a recursive addressing scheme with names mapped to local End IDs and routes.
The document discusses challenges with the current Internet design and proposes alternatives that implement advanced features like quality of service at lower network layers rather than in the IP layer. It suggests approaches like circuit switching or hybrid switching that integrate circuit and packet switching could provide benefits like guaranteed quality of service while still being able to transport best effort internet traffic. The document also references work by IEEE on synchronized audio/video bridging as an example of implementing some of these ideas.
8. WS/DDV 활용 기술
• White-Fi: 1 Km
• Super Wi-Fi: 100 Km
• WS, DDV에 모두 적용 가능
• 하지만 현재는 WS에의 적용만 정의
• CR(cognitive radio) + GDB(geolocation DB)
8
9. White-FI
• IEEE 802.11af
• 26.7 or 35.6 Mbps/ch (6/7 or 8 MHz) @1 km
• up to 426.7 Mbps or 568.9 Mbps
• 4 (bonded channels) x 4 (spacial streams)
9
10. Super Wi-Fi
• IEEE 802.22
• ~ 100 km
• ~19 Mbps/ch (6 MHz) @30 km
• channel bonding, (spatial streams)
10
11. 한국에서의 TVWS
• Super Wi-Fi 등 미래부 시범 사업
• KT 등 이통사도 참여
• TVWS 활용은 당연한 일
• 문제는....
11
12. Digital Dividend
• 누가 주인?
• 이동통신 사업자? 지상파 방송사?
• 엇박자
• FCC(US): pulbic, free
• EU(ITU-R)/Asia(APT): 이동통신
• Common Wealth!
12
13. 이통업자?
• 이미 충분한 기득권 확보
• 5G 등은 기존 대역 안에서 진화를 모색해야 마땅
• 특정 사업영역/사업자에 더 이상의 특혜를 줄 이유가 없다.
13
14. UHD 방송?
• 유선(Cable, IPTV) TV 시청이 대세
• 지상파 시청은 현재 5~18%; 계속 하락 추세
• 지상파 선도 방송이 TV 산업 경쟁력의 전제 조건은 아님
• 유선 선도 방송으로도 가능
• 한국은 HDTV 방송은 늦었지만 TV set는 세계를 장악
14
15. 인터넷 = 보편적 복지!
• 물, 전기....
• Digital Dividend == 무상 복지!
15
16. 재난 통신
• 별도의 대역을 할여할 기술적 이유가 없음
• 패킷 프레임 관리 기술로 보안/품질 요구 조건 충족 가능
16
17. Google's
Open Platform Model
• Any applications
• Any devices
• Any (3rd party) services
• Any (3rd party) networks
• http://en.wikipedia.org/wiki/United_States_2008_wireless_spectrum_auction
17
18. Digital Dividend as
Free Social Welfare
• Free for customers
• phone, phone calls, Internet
• Open playground for new small/mediaum startups
• Business model for providers
• advertisement (minimal)
• tax reduction/exemption
18
20. References
• J. J. Lee, K. C. Park, B. G. Lee, "Issues on the Digital Dividend in Korea,"
Recent Advances in Electrical and Electronic Engineering, (ISBN:
978-960-474-399-5), pp. 155-161, 2014.
• A. B. Flores, R. E. Guerra, and E. W. Knightly, "IEEE 802.11af: A
Standard for TV White Space Spectrum Sharing," IEEE Commun. Mag.,
pp. 92-100, Oct. 2013.
20