차세대통신방송융합서비스 전망및비전 경희대학교 suh@khu.ac.kr 서덕영
From Red Queen to Blue Ocean Blue Ocean 철학, 과거성공사례는필요없다.
Emerging Multimedia Service? Technology Push Market Pull M.C.Escher
징기스칸의세계지배 Technology push 갑옷 : 70kg vs 7kg 아랍인의반달칼 보르츠 ( 육포 ) Market pull 징기스칸의기술자우대 유목민의유연성 전투의개념 ( 체스와바둑 )
구텐베르그와마르틴루터 Technology push 금속활자 1447 년 대량인쇄가능 Market pull 종교개혁 1555 년 성경을일반대중에게
Emerging Multimedia Service? Technology Push 지난 100년간 교통의발달 통신의발달 Market Pull 컴퓨터발달 개입의원리 잡종의원리 엔트로피증가의법칙 예술가를주목하라. M.C.Escher
Market Pull: 개입의원리 1 자존감의상승
Market Pull: 개입의원리 2 Broadcasting service to Interactive service : 양방향 TV Conversational service : 개인방송국 아빠는 TV, 아이는컴퓨터게임또는싸이질 컴퓨터 200 대의슈퍼컴퓨팅
Market Pull: 개입의원리 3 제조업의위기는생산 / 분배의투명화에서 아이디어 제품 일방적소비에서생산에개입 싸이월드, dcinside.co.kr, 신춘문예 떨녀, 딸녀, 개똥녀, 황빠와황까
Market Pull: 잡종의원리 두가지형식의경계선에서나르시스의감각마비상태에서깨어남 퓨전음식 국악과재즈의만남 채플린 : 발레와영화 잡종기술 휴대폰 : 전화, 수첩, 오락기, MP3, 카메라 방송통신융합 (convergence)
Entropy 증가의법칙 Big Bang 권력의분산 원시 왕국 민주주의 New 유목민 장유유서에서붕우유신 초딩의활약 애국심, 향우회 보다는취미동호인모임 Centralized Distributed Entropy 증가를막는보수
Market Pull: 예술가를주목 1 신화 예술 과학 대중 법 줄베르느, 스필버그 현재의본성을파악 상세한미래를서술 감각의비율조절 : 기술에의한외상 ( 外傷 ) 을예측하여대비하게함. ( 노아의방주 ) Virtual 이 real 을지배
Market Pull: 예술가를주목 2 백남준 (1932~2006.1.29) : Networked art 1984, Good Morning, Mr. Orwell.
Emerging Multimedia Service? Technology Push 예측의어려움 개입의어려움 잡종의어려움 Market Pull Market 의요구 개입이가능하게 잡종이가능하게 엔트로피증가 M.C.Escher
Tech. Push: 예측의어려움 1 "This 'Telephone' Telephone' ' has too many shortcomings to be seriously considered as a means of communication. The device is, inherently, of no value. -Western Union internal memo, 1876 "The wireless music box has no imaginable commercial value. Who would pay for a message sent to nobody in particular? -David Sarnoff's associates in response to his urgings for investment in the radio in the 1920s "I think there is a world market for, maybe, five computers. s. -Thomas Watson, chairman of IBM, 1943 "There is no reason anyone would want a computer in their home. -Ken Oison,, founder of Digital Equipment Corp, 1977 ETRI 송나옥박사자료
Tech. Push: 예측의어려움 2 ETRI 김규헌박사자료
개입의어려움 1: 기술적어려움 Simplex to duplex 양방향통신이되어야한다. Return channel 을어떻게구현하나? Asymmetric to symmetric Prosumer 를위해서는 symmetric 이되어야 Digital CATV, ADSL, wireless Internet 등모두현재는 asymmetric
Tech. Push: 개입의어려움 2 권력의벽, 표준의벽, 법규의벽 Nitendo vs. Sony in computer game Telco vs. 중소기업 in mobile application 방송위원회 vs. DMB/ 위성 in TV 방송 국내시장을열려야, 세계시장에진출노예해방은윤리 / 인류애때문인가? 독점방지법, 공정거래위원회등이필요하지않은가?
Tech. Push: 잡종의어려움 1 Voice people vs. data people Circuit switching vs. packet switching Ex) B-ISDN B : ATM cell 53bytes (32+128)/2 Circuit switching Dedicated, fixed Realtime, bit-error Pay for distance and time Pakcet switching Shared, flexible Non-realtime, packet loss Pay for amount of data QoS guaranteed switching/network Shared and dedicated, flexible and fixed Non-realtime and realtime, packet loss Pay for QoS => 인터넷종량제
잡종의어려움 1 : Network classes Broadcasting - No delay - Not flexible - 1:n - One direction CS (voice) - No delay - Not flexible - 1:1 - One speed PS (data) - Routing delay - Flexible - 1:1, 1:m - cdma EV-DO CS+PS - [no] delay - More flexible - 1:1, 1:m - cdma EV-DV 시보 ( 時報 ) 를울릴수있나? QS (any services ) - [no] delay - Most flexible - 1:1, 1:m - UMTS, IPng CS: Circuit Switching PS: Packet Switching QS: QoS Switching
IPTV or TV over Internet?
Tech. Push: 잡종의어려움 2 Video people vs. network people 현미경 vs. 망원경 Video people 한개체를세밀히 Network people 간단한개체들을여러개 Scalable video, scalable network?
잡종의어려움 2: Multimedia QoS? BcN/3GPP/3GPP2 의복잡성 MPEG/ITU-T T JVT SVC 의복잡성 어떻게결합할것인가?
3GPP IMS Network configuration IP Multimedia Networks PSTN Legacy mobile signalling Networks Mb Mb (IPv6) Mb MRFP IMS- MGCF MGWMn Mb Mb PSTN PSTN Mp Mb GGSN Mj MRFC BGCF Mk BGCF Mg Mr PDF Go Mk CSCF Mi CSCF Mw P-CSCF Mw Gm Mm Cx Dx UE HSS SLF C, D, Gc, Gr IM Subsystem BGCF Breakout Gateway Function SLF- Subscription Locator Function
3GPP2 IP Multimedia Domain Network configuration 3GPP2 도 3GPP 와의 IMS harmonization 을목표로동일한 MMD (Multimedia Domain) Core network 기반의 IMS 표준을추구하고있음. Network EIR DSI Subscription Policy Profile Rules... Databases 1 Position Server 18 2 19 34 6 7 AAA 15 16/Cx 20 21 11/Sh 22 OSA Application Serve r 8 /OSA OSA Service Capability Server 10 11 /Sh 12 /ISC CallSession Control Function 23 mm 17/Mg 24 /Mr 28/Go SIP Application Server 12/ISC Breakout Gateway Control Function ee/mi Policy Decision Function ll/mk 17 /Mj Position Determining Entity RAN 27 Access 31 Gateway 32 /Mb Media Resource Function Controller Media Resource 25 /Mp Function 33 /Mb Media Gateway Control Function 26 /PSTN 30/Mc Media Gateway 29 Border Router
QoS guaranteed service? JVT Scalable Video Coding(~2006) FGS Quality Scalable Spatial Scalable H.264 /AVC Key picture Key picture IDR
Solutions: 차세대방송통신융합 Technology Push Market Pull Solutions Intelligent Interface? Merging? Reconfigurable system? M.C.Escher
Intelligent interface? MPEG-4 4 DMIF, MPEG-21, 말안통하는집단들끼리니까중계가필요하다. Complexity? 방송망 ( 지상파 ( 방지 / 위 / DCA / 위성 / DCATV) TV) 디지털아이템적응서버 차세대인터넷망 방송망 ( 지상파 ( 지방/ 위 // DCA 위성 / TV) DCATV) 이이동통신망동 User3 (DIP) IP based 통신터미널 User1 방송서버 (DIP) Tool down/upload 인증기관 툴서버 User 2 DIP (PC) 방송망, 인터 Tool down/uploading 넷망 TS based ETRI 조용주연구원자료
Merge1: Cross layer optimization Total solution For resource limited terminals Ex) ATM = layer2+3, DMB : 2 layer DMB VOD Server Upper Layers Transport Layer Network Layer Data Link Layer Physical Layer Error resilience, scalable coding, rate control FEC, retransmission, flow control Routers Network Layer Data Link Layer Physical Layer Resource allocation Slot scheduling, Channel coding, Retransmission, priority Base station Network Layer Data Link Layer Physical Layer Power control, prioritized modulation Mobile terminal Upper Layers Transport Layer Network Layer Data Link Layer Physical Layer
Merge2: Joint source-channel channel coding Conventional MPEG video MPEG system MPEG video MPEG system FEC Proposed MPEG video FEC MPEG system Network Network Stefan 512kbit/s FGS 3Level FEC Network PSNR(dB) 31 30 29 28 27 26 25 24 23 22 FGS Hybrid 3 5 10 20 Packet Loss Rate(%)
Reconfigurable : VCTR in MPEG (Video Coding Tools Repository) Configuration data syntax vlc table Parsing & Decoding FUs SYNP FU VLD FU RLD FU MBG FU CTX FU CS (Control Signal) Global Control Unit CI (Context Information) DF FU VR FU SPR FU FFR FU IT FU IQ FU IAP FU DCR FU IS FU DCR FU Macroblock based FUs 한양대장의선교수자료
Reconfigurable : VCTR Bitstream-level reconfigurable video coding MPEG-2 AVC AVC MPEG-2 AVC 한양대장의선교수자료
Conclusions Blue Ocean 전략 개입의벽을제거하고, 잡종의다양성을제공하자. MPEG64 for QoS
Thank you!!