Architectures and Protocols for Next Generation Wireless IP Networks

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Architectures and Protocols for Next Generation Wireless IP Networks Powered By Docstoc
					On Next Generation
Networks and Applications

 Wen-Tsuen Chen
 Department of Computer Science
 National Tsing Hua University
 June 13, 2005

 Presented in IDPT 2005, Beijing
Outline
   Milestones of Networks
   Internet Applications
   Switched networks
   Wireless networks
   Next Generation Networks
   Next Generation Applications
   Some Research Results
   Conclusions
                                   2
     Milestones of Networks
   Arpanet introduced in 1969
   TCP/IP, by V. Cerf and R. Kahn, in 1974
   Ethernet, by R. M. Metcalfe et al., in 1976
   Cellular telephones in 1978
   PC introduced in early 1980s
   Proliferation of LANs and hence the Internet
    in mid 1980s
   Mosaic browser in 1993 and World-Wide Web
    Consortium in 1994
                                                   3
Internet Applications
   Genesis to Early 80s
       Email, ftp, telnet
   Late 80s
       News, bbs, distributed and parallel computing
   Early 90s
       Gopher, WWW, hypertext
   Late 90s
       On-line game, auction, stock quotes, sports, horoscopes,
        headlines, weather, video conference, Internet TV, VPN,
        VoIP, P2P
   Early 00s
       Mobile VoIP, mobile VPN, location-based service, MMS


                                                                   4
Internet Trends
   Today's Internet will evolve into the dominant
    network delivering all forms of data, voice,
    and video to anyone anywhere at anytime.
   Handset will evolve as the major device for
    computing and communications.
   Everyone will use Internet.
   Infotainment will be one of the major
    applications.

                                                 5
      Everything over Internet
   VoIP、FAX、TV、Broadcast




                              Internet TV: GoToWatch




   Net surfing by handset, PDA, home appliances
   Shopping                                           6
Switched Network




                   7
Switched Network
   Transmitting data from source to
    destination through intermediate
    switching nodes
   Switching nodes are not concerned with
    the content of the data
   Switching nodes move data from node
    to node until they reach their
    destinations

                                         8
Packet Switching
   Data are transmitted in blocks, called packets
   Long message is broken up into a series of
    packets
   Packet
       header: control information
       payload: data
   At each switching node, the packet is
    received, stored, and passed on to the next
    node

                                                     9
10
    Peer-to-peer networking
• Client/server vs. peer-to-peer
• Napster, Gnutella, Kazaa, BitTorrent
• 70% of the traffic on ISP networks
• >5 billions music files and >5 millions games
  downloaded in 2003
• 400K ~ 600K movies/day
• Skype VoIP




                             11
Evolution of Wireless Networks

   Personal Area Networks (PANs)
   Wireless Local Area Networks (WLANs)
   Public wide-area (high-tier) cellular
    radio systems
   Mobile Satellite Networks



                                            12
Wireless systems: bit rates vs. coverage areas




                                                 13
Personal Area Networks (PANs)
   Short-range low-power radios
   Bluetooth
       three power classes with coverage ranges up to
        approximately 10 meters, 50 meters, and 100
        meters, respectively
       support bit rates up to about 720 Kbps
   HomeRF
   IEEE 802.15
       support data rates over 20 Mbps
                                                         14
Wireless Local Area Networks
(WLANs)
   Typically use the unlicensed Industrial,
    Scientific, and Medical (ISM) radio frequency
    bands
   ISM bands in the United States
       900-MHz band (902-928 MHz)
       2.4-GHz band (2400-2483.5 MHz)
       5.7-GHz band (5725-5850 MHz)
   IEEE 802.11: the most widely adopted WLAN
    standard

                                                    15
    IEEE 802.11
   A family of standards that defines the physical layers
    (PHY) and the Media Access Control (MAC) layer
   IEEE 802.11:
       infrared (IR)
       radio frequency (RF) in the 2.4-GHz ISM band
       1 or 2 Mbps
   IEEE   802.11b: 11 Mbps in the 2.4-GHz ISM band
   IEEE   802.11a: 54 Mbps in the 5.7-GHz ISM band
   IEEE   802.11g: 54 Mbps in the 2.4-GHz ISM band
   IEEE   802.11i: security
   IEEE   802.11e: QoS (quality of service)
   IEEE   802.11f: Inter Access Point Protocol (IAPP)

                                                             16
Public WLANs
   Provide significantly higher data rates than
    wide-area wireless networks
   Could take advantages of both WLAN and
    wide-area radio technologies to create new
    services and reduce networking costs
   Public WLANs are the first wave of all-IP radio
    access networks
   New and innovative business models for
    providing public mobile services

                                                 17
Worldwide WLAN sales




                       18
1G Wireless Networks
   Became commercially available in the early 1980s
   Analog radio technologies and circuit-switched
    transmission and networking technologies
   Main service: circuit-switched voice
   Lack the ability to support roaming between different
    network operators
   Three main 1G radio system standards
       Advanced Mobile Phone Systems (AMPS) in North America
       Total Access Communications Services (TACS) in the United
        Kingdom
       Nordic Mobile Telephone (NMT) in Nordic countries

                                                                19
2G Wireless Networks
   Emerged in the early 1990s
   Digital signal processing and transmission
    technologies (increased radio capacity and
    spectrum utilization, enhanced voice quality,
    reduced power consumption, etc.)
   Standards for core networks
   In addition to circuit-switched voice, enabled
    the first waves of mobile data and mobile
    Internet services

                                                     20
3G Wireless Networks
   Significantly increase radio system
    capacities and per-user data rates over
    2G systems
   Support IP-based data, voice and
    multimedia services
   Enhance quality-of-service (QoS)
    support
   Improve interoperability

                                              21
Fundamental Principles of 3G
   Core networks will be based on IP
    technologies
   Evolutionary rather than revolutionary




                                             22
Evolution of network technologies from 1G to 3G



                         Digital, Circuit and Packet Switching
                         (IP core, greater roaming capability)




          Digital, Circuit Switching
          (greater capacity, less power
          consumption, better quality,
          greater roaming capability, more secure)




   Analog, Circuit Switching
   (No autonomic roaming)


                                                                 23
Wireless IP network supporting heterogeneous
radio technologies



                               Public Wireless LANs




   3G Radio Access Networks                                    Wireless PANs




                                 IP Core Network



   2G Radio Access Networks                              Other Radio Access Networks




                              Enterprise Wireless LANs



                                                                                       24
IP-Based Wireless Networks
   The core network will be based on IP technologies.
   A common IP core network will support multiple
    types of radio access networks.
   A broad range of mobile voice, data, and multimedia
    services will be provided over IP technologies to
    mobile users.
   IP-based protocols will be used to support mobility
    between different radio systems.
   All-IP radio access networks will increase over time.
    The first all-IP radio access networks that have
    emerged in public wireless networks are public
    WLANs.

                                                        25
Evolution of Public Mobile
Services & Applications
   First Wave of Mobile Data Services:
    Text-based Instant Messaging
   Second Wave of Mobile Data Services:
    Low-Speed Mobile Internet Services
   Current Wave of Mobile Data Services:
    High-Speed and Multimedia Mobile
    Internet Services

                                            26
First Wave of Mobile Data Services:
Text-based Instant Messaging

   SMS (Short Message Services)
       provided over the completely circuit-
        switched 2G networks
       delivered using Mobile Application Part
        (MAP) in GSM networks
   SMS allowed mobile users to become
    familiar and comfortable with mobile
    data services
                                                  27
Second Wave of Mobile Data Services:
Low-Speed Mobile Internet Services

   Interactive and information-based mobile
    Internet services
   i-Mode: launched by NTT DoCoMo over PDC
    in February 1999
       emails and instant messages
       commercial transactions
       directory services
       daily information
       entertainment

                                               28
Growth of i-Mode Subscribers




                               29
i-Mode
   Most successful mobile data service
       3 million subscribers at the end of 1999
       17 million subscribers at the end of 2000
       30 million subscribers at the end of 2001
       33.5 million subscribers at the end of 1st
        Quarter of 2002
   Running on 9.6 kbps packet data
    capability in PDC networks

                                                     30
i-Mode Services
   Sending and receiving email/message
   Transaction: banking, ticket reservation, credit card
    bill inquiry, trading, etc.
   Database: dictionary, restaurant guide, mobile
    telephone directory, mobile recipes, etc.
   Daily information: news, weather reports,
    transportation information, town information, etc.
   Entertainment: Karaoke, FM on-air information,
    network games, horoscope, etc.


                                                            31
Current Wave of Mobile Data Services: High-
Speed and Multimedia Mobile Internet Services

   Camera phones
   Multimedia Messaging Services (MMS)
   Networked gaming
   Location-based services
   Streaming videos to mobile devices
   Vehicle information systems


                                                32
Evolution of mobile services

                      Broad range of voice, data, and multimedia
                      applications; Seamless access to the Internet;
                      Seamless roaming between different
                      radio systems




             Circuit-switched voice and data,
             Richer data services (e.g., SMS)
             Limited Internet access and applications
             (higher speeds for data services)




 Circuit-switched voice and data
 (low speed)



                                                                       33
Motivations for IP-Based Wireless
Networks
     IP-based wireless networks are better suited for
      supporting the rapidly growing mobile data and
      multimedia services.
     IP-based wireless networks bring the successful
      Internet service paradigm to mobile providers and
      users.
     IP-based wireless networks can integrate seamlessly
      with the Internet.
     IP-based radio access systems are becoming
      important components of public wireless networks.
     IP technologies provide a better solution for making
      different radio technologies transparently to users.

                                                         34
Growth of mobile voice and non-voice
services




                                       35
Source: Telecompetition Inc., February 2001
37
38
39
Terminals




            40
Terminals (cont.)




                    41
Terminals (cont.)




                       42
    Source: Qualcomm
Terminals (cont.)




                       43
    Source: Qualcomm
Terminals (cont.)




                       44
    Source: Qualcomm
Terminals (cont.)




                       45
    Source: Qualcomm
Terminals (cont.)




                       46
    Source: Qualcomm
Terminals (cont.)




                       47
    Source: Qualcomm
Terminals (cont.)




                       48
    Source: Qualcomm
Terminals (cont.)




                       49
    Source: Qualcomm
Next Generation Applications
   Electronic Commerce
   Distance Education
   Digital Libraries
   Webcasting
   Telemedicine
   Collaborative Research
                               50
                      Digital Library            Telemedicine
Distance Learning




                           Information Network


                                                       Electronic Government




Distance Learning

                                        Electronic Commerce
                    Video Conference

                                                                           51
                   Electronic Commerce
                            Commercial
                       Information Providers


                           Server
                                               PBX
    Financial
    Institute

                                                     Commercial - Agent
                      Communications
                         Network




                                                     Manufacture

On-line Shopping                                                          52
Telemedicine Applications
  University/                                                                      • Basic Application
                    Medical Research      Emergency wireless
  Research             Database                                                      Groups
   Institute                               communications
                                                                                     - Conferencing: For
                                                                                      Remote Diagnostics,
                                                           Hospital                   Medical Training &
                                                                                      Conferencing
                                                                    Remote          - Messaging: For
                                                                  diagnostics
Remote Clinic                                                                         Communication
                                                                                    - Information Retrieval:
                                                                   Multimedia
                                                                  Patient record
                                                                                      For Access To Medical
                         Communications                             database          Research Database
                            Network                                                 - MMDB: For Patient
                                                                                      Record Image
                                                                        Image
                                                                                      Processing
                                                                      Processing
                                                                                    - Wireless WAN
                                                                                     Access:
                                                                  Wireless LAN        For Emerging Mobile
                                                                  Patient Chart       Communication
                                                                  (Pen based)
                                                                                    - Wireless LAN: For In-
Multimedia      Email      Conferencing      Video                                  Hospital communication
                                                                    Medical
 DBMS           Server       Bridge          Server                           • End-To-End System
                                                                    Training/
      Multimedia Application Servers                              Conferencing Integration is
                                                                                    Important          53
Next Generation Networks
   High bandwidth
   Quality of Service support
   Mobility support
   Security
   Network management


                                 54
Some Research Results
   Project on Next Generation Information
    Networks and Applications
       First Phase: April 2000 ~ March 2004
       Second Phase: April 2004 ~ March 2008
       Total Budget: US$ 20 Millions
       More than 30 professors and 200 graduate
        students from National Tsing Hua Univ.
        and National Chiao Tung Univ. involved

                                               55
Project Goals
   Key technologies for next generation
    information networks and applications
   Three main focuses:

             Systems & applications


Network Core Tech.                Wireless Tech.


                                                   56
    Transportation Analogy
                                     Core Router

                         Highway I

               S
               p
               e
               e          Metropolitan
                     Backbone Network
                            Intersection
               d
               w        (Local (router)
                               Network)
                      (Core Network)
               a
               y
                   Highway III

Local Router
                                                   57
Mount Jade to Hsinchu City



                      Highway I
                S
   Wireless     p
                e
   Network      e
                d
                w
                a   Highway III
                y


                                  58
Applications and Services

          Highway I

   S
   p
   e
   e
   d
   w
   a
   y
        Highway III



                            59
                     Systems & Applications




                              Network

Mobile users


                            Network Core
        Wireless
                            technologies
      Technologies
                                              60
Focus I:
Network Core Technologies
   Switching Technology
               Highway I
       S
       p
       e
       e
       d
       w
       a
       y
             Highway III


                            61
1. High-speed Switch
   Proposed a high-speed switching architecture based
    on Birkhoff-von Neumann network
       100% maximum throughput
       widely referenced in course materials
   A prototype 8 x 8 switch with capacity of 64 Gbps
    implemented with .13um IC technology
   Adopted by Stanford team to design 100Tb/sec
    switches              1                        1


                                                     Birkhoff-
                                                   von Neumann
                                                      switch
                                  Load-balancing
                              N                                  N



                                                                     62
2. Expandable High-speed
   Service Router
   High-speed backplane (16 Gbps)
   Service Modules (Gigabit Ethernet)
       Bandwidth management
       Network security module
       Contents filtering
       Mobility management



                                         63
64
   GE URL Filtering system has been deployed in 16
    GigaPoP




卓越計畫成果發表會 (2004/3/30), 聯合報                            65
Focus II:
Wireless Technologies
   Heterogeneous Mobile networking
       Roaming, QoS, and Security



                                     Highway I
                            S
                            p
                            e
                            e
                            d
                            w
                            a    Highway III
                            y
                                                 66
 Integrated Mobile Comm. System
                    Mobile Management
            WLANs
MANETs                     Internet


                    Quality of Service
                            Cellular
                            Network

                    Security Authentication


                                          67
1. Mobile and Routing
   Technologies
   Roaming between GPRS and WLAN
       Adopted by Taiwan Cellular Co.
   Integrated PHS/GPRS and Ad Hoc
    Networks
   Indoor and outdoor positioning and
    services


                                         68
Integrated PHS/GPRS and
Ad Hoc Networks
   Two-tier architecture
   Mobile routers
       Seamless handoff (Mobile IP support)
                                    Internet

                      PCS Core Network                      Ethernet

             PHS                GPRS               802.11
             Base                Base              Access
            Station             Station             Point



             PHS                 GPRS
            Handset             Handset




             Laptop       PDA             Laptop   Laptop          PDA



                                                                         69
2. Security Authentication
   Integrated authentication for WLAN and GSM/GPRS
       WLAN users use SIM card for authentication




                                                      70
Focus III:
Systems and Applications
   Multi-Modal searching in the Internet

                   Highway I
          S
          p
          e
          e
          d
          w
          a
          y      Highway III


                                            71
    1. Intelligent Poem reading
       and Learning
   Web station for stories appearing in poems of
    Tang Dynasty (唐詩典故)
       9698 stories in the web
       Data representations
            分典故、相關人物、相關典故、同義典故、參見典故、典
             故出處、出處內容、連接全唐詩詩作例句、全文的選項
       Story markers
            用法別、相關典故、
             參見典故、相關人物、
             典故內容朝代、典故
             出處及原文、同義典故



                                                72
Different modes of access
    Wireless PDA: access according to
    Number of strokes      Name of origin




                                            73
   By Sound:
       唐詩宋詞語音檢索
       背書機、依韻入詩
   By Meaning:
       蘇軾寫過一首詩,把西湖比喻成古代某個美麗的女
        子,請問是那一首?
       用「西湖」及「女子」二個語意概念來找
       〈飲湖上初晴後雨〉
        「水光瀲灩晴方好,山色空濛雨亦奇
         欲把西湖比西子,淡妝濃抹總相宜」

                             74
        2. Multi-modal multimedia
           searching
           Searching a film
Input            output Output



       Searching an image




                                    75
Searching a movie




                    76
Searching a song
   Multi-modal music             World first 8/16-bit
    searching engine: Catalog,     microprocessor-based
    name of song, a piece of       platform for rhythm
    song, rhythm of song, or       recognition
    even just sequence of
    beats
   First prize of
    Microsoft .NET & XMLWeb
    Service competition in
    Taiwan, second prize in
    Asia (2002、2003)


                                                          77
3. Network Services
   Website for aborigines「飛鼠部落」: Distinguished
    Teaching and Service to Aborigines awarded by the
    3rd International Conference on Information Literacy
    and Life Long Learning Society
   English Translation of the contents of the website by
    the Ministry of Education




                                                        78
Aborigines Culture Heritage
   Services of the Website:
       On-line registration
       Itinerary Planning
       Tour guiding with PDAs
       On-line postcards
   Computer Education for K to 12 students
       Alleviate social divide
   Training culture and science boy/girl tour
    guides

                                                 79
 Conclusions
 Vision for the Next Generation Internet:
  In the 21st Century, the Internet will provide a
 powerful and versatile environment for business,
education, culture, and entertainment. Sight, sound,
     and even touch will be integrated through
   powerful computers, displays, and networks.
 People will use this environment to work, bank,
 study, shop, entertain, and visit with each other.

                                                       80
 Whether at the office, at home, or on travel, the
 environment will be the same. Security, reliability,
 and privacy, will be built in. The customer will be
  able to choose among different levels of service
  with varying prices. Benefits of this environment
will include a more agile economy, a greater choice
 of places to live and work, easy access to life-long
learning, and better opportunity to participate in the
       community, the Nation, and the World.

                                                         81

				
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