1
Trends of NGN and Its Issues
Koichi Asatani
Kogakuin University
IEEE Distinguished Lecturer Program
Boston, MA, October ...
2
0
200
400
600
800
1000
1200
1400
1600
1800
IP Telephone Subscriber Number Growth
x10k
0AB-J
050
total
2005.3
2007.9
2007...
3
Pros & Cons
Guaranteed QoS
High Security
High Dependability
Best Effort type of QoS
Low Security
Low Dependability
Spams...
4
-Packet-based network providing telecommunication services
-Making use of multiple broadband, QoS-enabled transport tech...
5
NGN Transport and Service Configuration
Other MultimediaService
Components…
Streaming Service
Component
PSTN / ISDN Emul...
6
IMS-based NGN Configuration Example
Service User
Profile
Service Stratum
Transport Stratum
IMS Core
Teleconferencing
AS
...
7
NGN Release 1 Service Capabilities(1/2)
PSTN/ISDN like servicePSTN/ISDN Simulation
Same or better PSTN/ISDN servicePSTN/...
8
NTT’s NGN Services
Ethernet
Ethernet over NGN
(Business Ether Wide service)
Multicast
Unicast
Best Effort
Multicast
Unic...
9
NGN Service Areas
0
50
100
150
200
250
2008.3
2009.3
2008.12
2008.9
2008.6
NumberofCities
(32.7m/128m)
Koichi Asatani 20...
10
Next Generation IP Network Forum
Next Generation IP Network
Forum
Chair: Prof. Tadao Saito (University of Tokyo)
Techno...
11
New Business Models
NW
NW service
Application
platform
Applications
/content
Terminals
NW
NW service
Application
platfo...
12
Issues
• Evolution and Convergence
– Harmonic FMC
• New Business Models
– Service Creator Involvement
– NGN as a servic...
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Ngn

  1. 1. 1 Trends of NGN and Its Issues Koichi Asatani Kogakuin University IEEE Distinguished Lecturer Program Boston, MA, October 29, 2008 Broadband Access in Japan NumberofSubscribers(Million) 2002 2005 2006 2007 20082003 2004 FTTH Cable ADSL 0 1 0 2 0 All rights reserved Koichi Asatani 2008
  2. 2. 2 0 200 400 600 800 1000 1200 1400 1600 1800 IP Telephone Subscriber Number Growth x10k 0AB-J 050 total 2005.3 2007.9 2007.3 2006.9 2006.3 2005.9 2008.3 All rights reserved Koichi Asatani 2008 Evolution in Networks and Applications WWW NGI Internet ARPA Packet Switched Network B-ISDN ISDN Digital Telephone Network Analog Telephone Network ftp telnet e-mail Internet access Data communications Telephone Broadband StreamingADSL FTTH FWA nGWL NGN Burst, Streaming Unicast, Multicast Voice Sound Video Mutlimedia FR ATM P2P Network Evolution Telecom Applications Internet Applications SDH FAX IP Telephony All rights reserved Koichi Asatani 2008
  3. 3. 3 Pros & Cons Guaranteed QoS High Security High Dependability Best Effort type of QoS Low Security Low Dependability Spams & Malware Fixed Bandwidth High Cost Flexible Bandwidth Low cost PROS CONS Telecom Internet All rights reserved Koichi Asatani 2008 Network Principles and Convergence TelecomTelecom InternetInternet End Principle End nodes are responsible. End PrincipleEnd Principle End nodeEnd nodess are responsible.are responsible. Network Principle Network is responsible. Network PrincipleNetwork Principle Network is responsible.Network is responsible. Stateless networksStateless networksStatefulStateful networksnetworks Trustful networksTrustful networks Trustful end usersTrustful end usersTerminalTerminal liberalizationliberalization NonNon--transparent networktransparent network Transparent networkTransparent network ISDNISDN Firewall PFirewall Proxyroxy,, NATNAT Best effort networksBest effort networksQoS guaranteed networksQoS guaranteed networks ADSLADSL RSVPRSVP DiffServeDiffServe Regulated Market Competitive Market? Koichi Asatani 2008
  4. 4. 4 -Packet-based network providing telecommunication services -Making use of multiple broadband, QoS-enabled transport technologies -Service-related functions independent from underlying transport-related technologies -Providing unfettered access for users to networks and to competing service providers and/or services of their choice. -Supporting generalized mobility, allowing consistent and ubiquitous provision of services to users. Source:Rec.Y.2001 Target Standards Area Generalized Mobility Convergence btw. Fixed & Mobile Unrestricted Access Open Access I/F Separation Services with Transport Architecture and Open API QoS-enabled Transport Multiple-Broadband Manageable Broadband Definition & Features of NGN Koichi Asatani 2008 Next Generation Networks -Principles- NGN Transport Functions NGN Service-Related Functions Telephone Services Data Services (WWW, e-mail, etc.) Video Services (TV, movies, etc.) Internet Protocol (IP) Anything and Everything Everything (Any and All Network Technologies) (Any/All Applications e.g., voice, data, video) Scope of the Internet “Service Stratum” “Transport Stratum” Source: ITU-T Recommendation Y.2011 — General principles and general reference model for next generation networks Koichi Asatani 2008
  5. 5. 5 NGN Transport and Service Configuration Other MultimediaService Components… Streaming Service Component PSTN / ISDN Emulation Service Component IP Multimedia Component &PSTN/ISDN Simulation IP Multimedia Service Component S. User Profile Functions GWGW Applications Legacy Terminals Note: Gateway (GW) may exist in either Transport Stratum or End-User Functions. * Legacy Terminals Transport Stratum Service Stratum End-User Functions Legacy Terminals Note: Gateway (GW) may exist in either Transport Stratum or End-User Functions. * Legacy Terminals Transport Stratum Service Stratum End-User Functions Application Functions Core transport Functions NGN Terminals Customer Networks OtherNetworks Application Support Functions and Service Support Functions Core Transport Functions OtherNetworks Transport Stratum Edge Functions Access Transport Functions Service Control Functions Network Access Attachment Functions NAAF Network Attachment Control Functions (NACF) AccessNetwork Functions Resource and Admission Control Functions (RACF) User Profile Functions T. User Profile Functions GWGW Application Functions Core transport Functions NGN Terminals Customer Networks OtherNetworks Application Support Functions and Service Support Functions Core Transport Functions OtherNetworks Transport Stratum Edge Functions Access Transport Functions Access Transport Functions Service Control Functions Network Access Attachment Functions NAAF Network Attachment Control Functions (NACF) AccessNetwork Functions Resource and Admission Control Functions (RACF) User Profile Functions T. User Profile Functions User Profile Functions T. User Profile Functions GWGWGWGW Other MultimediaService Components… Streaming Service Component PSTN / ISDN Emulation Service Component IP Multimedia Component &PSTN/ISDN Simulation IP Multimedia Service Component S. User Profile Functions GWGWGWGW Applications Y.NGN-FRA Figure 8 - Koichi Asatani 2008 NGN architecture overview Transport stratum Service stratum Control MediaManagement Service user profiles Transport user profiles ANI Applications Transport control functions Resource and admission control functions Network attachment control functions End-userfunctions NNI UNI ANI control Services Media handling functions Transport functions Gateway functions Gateway functions Gateway functions Service control functions Othernetworks Gateway functions Managementfunctions Application support function and service support functions Source: Fig.7.1/ITU-T Rec.Y.2013 and Fig.1/ITU-T Rec. Y.2401/M.3060 Koichi Asatani 2008
  6. 6. 6 IMS-based NGN Configuration Example Service User Profile Service Stratum Transport Stratum IMS Core Teleconferencing AS Presence ASAS IP Centrex AS Applications Application Servers End User Terminals IMS:IP Multimedia Subsystems CSCF : Call Session Control Function S-CSCF : Serving-CSCF I-CSCF: Interrogating-CSCF P-CSCF : Proxy-CSCF RACF: Resource and Admission Function, PSTN: Public Switched Telephone Network Other Networks NGN non-NGN I-CSCFS-CSCFP-CSCF RACF/ NACF Others PSTN Media Gateway Legacy Cellular BroadbandWLANIMS Cellular All rights reserved Koichi Asatani 2008 NGN release 3 ・RF-ID NGN release 2 ・entertainment ・home networks NGN Release 1 ・multimedia ・PSTN/ISDN emulation/ simulation Services & Capabilities 2007 Release 2 Enhancements 2009 20xx - multimedia - PSTN/ISDN emulation/ simulation ・Streaming Services ・Ubiquitous Services NGN Standardization Release Approach Release 1 Enhancements Koichi Asatani 2008
  7. 7. 7 NGN Release 1 Service Capabilities(1/2) PSTN/ISDN like servicePSTN/ISDN Simulation Same or better PSTN/ISDN servicePSTN/ISDN Emulation 3GPP release 6 and 3GPP2 release A OSA-based services VPN services Information services (e.g., highway monitoring) Hosted and transit services for enterprises (e.g., IP Centrex) Broadcast/multicast services Push-based services Content delivery services Collaborative interactive communication services Point-to-Point interactive multimedia services (video telephony) Push to talk Messaging service Presence and general notification services Real-time text Real-time conversational voice services (interworking with PSTN and cellular networks) Multimedia Service OutlineService Type Koichi Asatani 2008 NGN Release 1 Service Capabilities(2/2) Unsolicited bulk telecommunications protection Service unbundling Number portability Support of users with disabilities Network or service provider selection User identifier presentation and privacy Emergency telecommunication Malicious communication identification Lawful interception Public Interests OTN (Over-the-Network) device management Remote Control/tele-action(e.g., Home application control, telemetry, alarming) Sensor network service On-Line applications (e.g., On-line marketing, e-commerce) Data Communications (e.g., file transfer, Web browsing) Data retrieval (e.g., tele-software) VPN Other Services Legacy Internet AccessInternet Access OutlineService Type Koichi Asatani 2008
  8. 8. 8 NTT’s NGN Services Ethernet Ethernet over NGN (Business Ether Wide service) Multicast Unicast Best Effort Multicast Unicast QoS Guaranteed Content Delivery Service (FLET'S Cast service) VPN (Center-to-End, CUG)Best Effort VPN (Center-to-end, CUG) To be providedQoS GuaranteedVPN service (FLET'S VPN Gate service) Video Telephony Business Telephony Hikari Telephony (Standard QoS, High QoS: 7kHz) QoS Guaranteed Optical Telephony service (Hikari Denwa and Hikari Denwa Office Type) Service for Business users Service for Residential Users (apartment house) Service for Residential Users (single family house) Optical Broadband service (FLET'S Hikari Next service) ContentService Koichi Asatani 2008 NGN Telephony Protocol 100Base-TX/10BaseTxPhysical IEE802.3-2005 MAC ARP Data Link IPv6/ICMPv6IPv4/ICMPv4Network UDP/TCPUDPTransport Session Presentation HTTP RTP RTCP G.722 (voice) H.264(video) SIP SDP Application OthersMedia ControlSession ControlLayer Koichi Asatani 2008
  9. 9. 9 NGN Service Areas 0 50 100 150 200 250 2008.3 2009.3 2008.12 2008.9 2008.6 NumberofCities (32.7m/128m) Koichi Asatani 2008 NGN-related Standardization Organizations USA Europe ATISATIS TTC (Japan)TTC (Japan) TTA (Korea)TTA (Korea) CCSA (China)CCSA (China) IETFIETF ETSIETSI ITU NGN-GSI ITU NGN-GSI AsiaTISPANTISPAN 3GPP3GPP All rights reserved Koichi Asatani 2008
  10. 10. 10 Next Generation IP Network Forum Next Generation IP Network Forum Chair: Prof. Tadao Saito (University of Tokyo) Technology Group Chair: Prof. Shigeki Goto (Waseda University) R&D and Standardization Group Chair: Prof. Koichi Asatani (Kogakuin University) Planning and Promotion Group Chair: Dr. Yuichi Matsushima (NICT) Strategic Planning WG Home Networks WG IP Terminal Group Chair: Prof. Hitoshi Aizawa (University of Tokyo) Applications Promotion Group Chair: Prof. Jiro Kokuryo (Keio University) All rights reserved Koichi Asatani 2008 Evolution and Convergence Telecom (Circuit Switched) Broadcast Internet (IP) NGN (IP) Broadcast (IP?) Internet (IP) NGN (IP) NGN (IP) All rights reserved Koichi Asatani 2008
  11. 11. 11 New Business Models NW NW service Application platform Applications /content Terminals NW NW service Application platform Applications /content Terminals NW NW service Application platform Applications /content Terminals NW NW service Application platform Applications /content Terminals NW NW service Application platform Applications /content Terminals NW NW service Application platform Applications /content Terminals Terminal service vender Legacy telecom NW vender NW service vender e.g. MVNO Application vender Platform vender NW NW service Application platform Applications /content Terminals Legacy cellular + All rights reserved Koichi Asatani 2008 IPv6 Multi-prefix HGW: Home Gateway, GW: Gateway, STB: Set top box HGW LAN NGNNGN ISPISP To Internet ISP IPv6 NGN IPv6 STB ISP IPv6 NAT tunneling NGN Applications To Internet HGW LAN NGNNGN GW NGN IPv6 STB NGN Applications All rights reserved Koichi Asatani 2008
  12. 12. 12 Issues • Evolution and Convergence – Harmonic FMC • New Business Models – Service Creator Involvement – NGN as a service platform • Regulation – Communication vs. Broadcast • Global Standards – Global collaboration • Multi-prefix in IPv6 : – Confliction between NGN IPv6 address and ISPs' IPv6 address both of which are assigned to the same terminal. All rights reserved Koichi Asatani 2008 Thank you!

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