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Sep.26, 20021 Latest Mobile Radio Services and Associated R&D Activities Hideyuki Shinonaga KDDI R&D Laboratories Ohara 2-1-15,

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Presentation on theme: "Sep.26, 20021 Latest Mobile Radio Services and Associated R&D Activities Hideyuki Shinonaga KDDI R&D Laboratories Ohara 2-1-15,"— Presentation transcript:

1 Sep.26, Latest Mobile Radio Services and Associated R&D Activities Hideyuki Shinonaga KDDI R&D Laboratories Ohara , Kamifukuoka, Saitama, , Japan

2 Sep.26, CDMA2000 1x Advantage: Backward Compatibility with cdmaOne (IS-95) cdmaOne (IS-95) BTS cdmaOne (IS-95) handset cdmaOne (IS-95) - mode CDMA2000 1x BTS CDMA2000 1x handset CDMA2000 1x - mode (i) gradual CDMA x introduction, and (ii) continuous use of legacy handsets. cdmaOne (IS-95) – mode enables

3 Sep.26, CDMA2000 1x Network Deployment: Upgrade vs. Overlay cdmaOne boards CDMA2000 1x boards cdmaOne RAN Upgrade Pros: Less CAPEX needed. Cons: cdmaOne software including the management system should be modified. Overlaid CDMA2000 1x Deployment Pros: No essential modification required for the cdmaOne devices. Cons: More CAPEX needed. KDDI has adopted the upgrade approach to minimize cost and to utilize the current management system as much as possible. RAN: Radio Access Network, CAPEX: Capital Expenditure

4 Sep.26, aus Scenario for Mobile Data Services au launched in April 2002 au to launch in 2003 cdmaOne 64 kbit/s Packet (1.25 MHz Bandwidth) CDMA2000 1x 144 kbit/s Packet (1.25 MHz Bandwidth) CDMA2000 1x EV-DO 2.4 Mbit/s max. Packet (1.25 MHz Bandwidth) (Evolution) (Revolution) GSM/GPRS or PDC kbit/s Packet (50 kHz Bandwidth) 384 kbit/s Packet (5 MHz Bandwidth) W-CDMA TDMA CDMA NTT-DoCoMo launched in October 2001

5 Sep.26, KDDIs Vision to Fixed-Mobile Service Convergence Access Means cdmaOne/CDMA2000 1x Voice and Low-Speed Data, supporting wide coverage area CDMA2000 1x EV-DO Best-Effort High-Speed Data, supporting wide coverage area W-LAN Very-High-Speed Wireless Data in limited coverages ADSL High-Speed Wired-Line Data FTTH Very-High-Speed Wired-Line Data ADSL FTTH Wired-Line Broad-Band Internet Access Cellular Mobile Internet Convergence Service Portability across DION and au

6 Sep.26, KDDIs Vision to Fixed-Mobile Network Convergence Service Portability across FTTH/ADSL W-LAN and Mobile, by using common backbone networks and application servers IP backbone FTTH/ ADSL Mobile Access Coordinated Control and Management W-LAN SNMP-based network management for all IP networks

7 Sep.26, Public Wireless LAN Several authentication methods are used for so-called hotspot services by Wireless ISPs. PPP over Ethernet Users simply be treated like ordinary DSL subscribers No special features be required for W-LAN networks PPPoE client software should be installed on users PC ISP 1 ISP 2 Layer2 Access Network may use IEEE802.1x Broadband Access Server Radius PPPoE Gateway DHCP IP core IPsec / PPTP(end-to-end) Gateway (DHCP) Web-browser usually be used for UID / PWD input Gateway be used for assigning IP address and bandwidth control No client software be required IEEE802.1x Port-based access control 802.1x client software should be installed on users PC Encryption keys for W-LAN can be changed dynamically ping SNMP Web-based Network Management Radius: Remote Authentication Dial-In User Services

8 Sep.26, Seamless Communications among Heterogeneous Media (R&D phase)

9 Sep.26, ITS Smart Gateway R&D Project DSRC Roadside Network Cellular / Broadcasting LR Address Registration & Management Router Network ITS Center G/W Network Architecture Special network configuration with servers provide continuous services across DSRC spots Handover Technique for Roadside-Vehicle Communications Systems 30 meter Route Control Agent System f1f2f1 Address Information Cruise-Assist Service IP Applications Roadside Network XML

10 Sep.26, Handover Protocols for Road-to-Vehicle Communications Systems FCMC Frame Control Message Channel ACTC Activation Channel MDC Message Data Channel BST Beacon Service Table VST Vehicle Service Table FID Fixed Equipment Identifier LID Link Address SEQ Sequence Number Handover protocol supports continuous communications among multiple Base Stations (BS) or Zones by transferring handover data managed in MAC and LLC sub-layers.

11 Sep.26, Address Registration and Management

12 Sep.26, ITS Seamless Communications by Mobile Router (R&D phase) ITS seamless communications among heterogeneous wireless media Key technologies (1) Mobility management by mobile-IP based mobile router, (2) Selection of optimum wireless media, (3) QoS management, (4) Account & security management among multiple network operators Devices in Vehicle Wireles s LAN Mobile Router IP camera cdmaOne /CDMA2000 1x PDA Car navigation PC cdmaOne /CDMA2000 1x Network Wireless LAN Network DSRC Network Internet Contents DSRC


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