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

Sep.26, 2002 1

Latest Mobile Radio Services and Associated R&D Activities

Hideyuki Shinonaga

KDDI R&D Laboratories

([email protected])

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 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

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-CDMA

TDMA

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 across DION 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 Authentication Dial-In User Services

Sep.26, 2002 8

Seamless Communications among Heterogeneous Media (R&D phase)

インターネットInternet /Intranet

MultimodeTerminal

au(EV-DO)H”(PHS)

MultimodeTerminal

PAN

Inquiry / NegotiationGateway

FTTH/ FTTC

Wireless LAN

KDDI Fixed and MobileAccess Network

ADSL

Application Servers

KDDI Backbone

UserManagement

Servers

Merits

Adaptive media selection by・ operator and/ or user policy

Personal mobility・

Package pricing・

Contents Servers

PersonalServer

Technical Issues

Criteria for media selection・

・Macro/ micro mobility control

・Continuation of session and contents among heterogeneous media

・Management of users and terminals

・Cooperation of servers owned by different operators

Fixed Mobile Convergence

Seamless communicationsacross wireless systems

RS CS TR RD TD CDTALK / DATA

TALK

Seamless communicationsamong wired and wireless systems

au /DDI POCKET

AuthenticationServer

BroadbandDION

AuthenticationServer

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 ServerFCMC

ACTC

MDC (BST)

MDS (VST)AID, EID,LID, FID

FID

LID

MDS SEQ＃１ACK

MDS SEQ＃2ACK

MDS SEQ＃3

Ap

pli

cati

on S

tart

FCMC

ACTC LIDMDC (BST)

FID

MDS SEQ＃3ACK

MDS SEQ＃4ACK

MDS SEQ＃5

MDS(Handover

data＋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

ID走行車両

Base Station ID

Control Station

Roadside Network

HLR

LR Location：Register

HLR Home：Location 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 multiple network operators

Devices in Vehicle

Wireless LAN

Mobile Router

IP camera

cdmaOne/CDMA2000 1x

PDA

Car navigation

PC

cdmaOne/CDMA2000 1x Network

WirelessLAN NetworkDSRC

Network

InternetContents

DSRC