latest mobile radio services and associated r&d...
TRANSCRIPT
Sep.26, 2002 1
Latest Mobile Radio Services and Associated R&D Activities
Hideyuki Shinonaga
KDDI R&D Laboratories
Ohara 2-1-15, Kamifukuoka,
Saitama, 356-8502, Japan
Sep.26, 2002 2
CDMA2000 1xAdvantage: 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 2000 1x introduction, and
(ii) continuous use of legacy handsets.
cdmaOne (IS-95) – mode enables
Sep.26, 2002 3
CDMA2000 1x Network Deployment: Upgrade vs. Overlay
cdmaOne boards
CDMA2000 1x boards
cdmaOne RAN Upgrade
Pros: Less CAPEX needed.
Cons: cdmaOne software including themanagement system should bemodified.
Overlaid CDMA2000 1x DeploymentPros: 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
Sep.26, 2002 4
au’s Scenario for Mobile Data Services
au launched in April 2002
au to launchin 2003
cdmaOne
64 kbit/sPacket
(1.25 MHz Bandwidth)
CDMA2000 1x
144 kbit/sPacket
(1.25 MHz Bandwidth)
CDMA20001x EV-DO
2.4 Mbit/s max.Packet
(1.25 MHz Bandwidth)
(Evolution)
(Revolution)
GSM/GPRS or PDC
9.6-28.8 kbit/sPacket
(50 kHz Bandwidth)
384 kbit/sPacket
(5 MHz Bandwidth)
W-CDMATDMA
CDMA
NTT-DoCoMo launched in October 2001
Sep.26, 2002 5
KDDI’s 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
ADSLFTTH
Wired-Line Broad-Band Internet Access
Cellular（Mobile Internet）
ConvergenceConvergenceService Portability acrossDION and au
Sep.26, 2002 6
KDDI’s 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
MobileAccess
Coordinated Control and Management
W-LAN
? SNMP-based network management for all IP networks
Sep.26, 2002 7
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 user’s PC
ISP 1
ISP 2
Layer2
Access Network
may use IEEE802.1x
BroadbandAccess Server
Radius
Radius
Radius
PPPoE
GatewayDHCP
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 user’s PC? Encryption keys for W-LAN
can be changed dynamically
? ping? SNMP? Web-based
Network Management
Radius: Remote AuthenticationDial-In User Services
Sep.26, 2002 8
Seamless Communications among Heterogeneous Media (R&D phase)
インタ ネット
au(EV-DO)H”(PHS)
Merits
·Adaptive m edia selection by operator and/or user policy
·Personal m obility
·Package pricing
Technical Issues
·Criteria for media selection
·Macro/m icro m obility control
·Continuation of session and contents among heterogeneous media
·Management of users and terminals
·Cooperation of servers owned by different operators
Fixed Mobile Convergence
RS CS TR R D TD CDTA LK / D ATAT ALK
Sep.26, 2002 9
ITS Smart Gateway R&D Project
DSRC
Roadside Network
Cellular / BroadcastingLR
Address Registration & Management
Router Network
ITS Center
G/W G/W
Network ArchitectureSpecial network configuration with servers provide continuous services
across DSRC spots
Handover Technique for Roadside-Vehicle
Communications Systems
30 meter
Route Control
Agent System
f1 f2 f1
Address Information
Cruise-Assist Service
IP Applications
Roadside Network
XML
Sep.26, 2002 10
Handover Protocols for Road-to-Vehicle Communications Systems
MS BS #1 BS #2 BS #3 •̀ #n ServerFCMCACTC
MDC (BST)
MDS (VST)AID, EID,LID, FID
FIDLID
MDS SEQ•” ‚PACK
MDS SEQ•” 2ACK
MDS SEQ•” 3
App
licat
ion
Star
t
FCMC
ACTC LIDMDC (BST)
FID
MDS SEQ•” 3ACK
MDS SEQ•” 4ACK
MDS SEQ•” 5
MDS(Handoverdata•{ VST)
LID, FID
Con
tinu
e linkdisconnection
linkdisconnection
Data Transmission
HandoverData•{
LID
LID, FID
FCMC： Frame Control Message ChannelACTC： Activation ChannelMDC： Message Data ChannelBST： Beacon Service TableVST： Vehicle Service TableFID： Fixed Equipment IdentifierLID： Link AddressSEQ： 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.
BS #1
Control Station (CS)
LR
Backbone Networks
HLRLR：Location Register
HLR：Home LocationRegister
BS: Base Station
Mobile Station (MS)
BS #2 BS #4BS #3
Zone #1Zone #2 Zone #3 Zone #4
30 m
Sep.26, 2002 11
Address Registration and Management
‘ –• sŽ Ô— ¼ ID
Base Station ID
Control Station
Roadside Network
HLR
LR•FLocationRegister
HLR•FHomeLocation Register
Current Zone Info
Current Area Info
Zone ID
Control StationLR
ITS Backbone
XML
Vehicle ID
Vehicle IDCurrent Zone ID
LR
ITS ApplicationLDAP
AddressManagement
Protocol
Address InfoDatabase
NetworkConfiguration
TrackingTechnique
Base Station IDZone ID
Base Station IDZone ID
Sep.26, 2002 12
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 multiplenetwork operators
Devices in Vehicle
Wireless LANMobile
Router
IP camera
cdmaOne/CDMA2000 1x
PDA
Car navigation
PC
cdmaOne/CDMA2000 1x Network
WirelessLAN NetworkDSRC
Network
Internet Contents
DSRC