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Overview of New Generation Mobile Network Project

WAKANA Hiromitsu, Ph. D.Director

Yokosuka Radio Communications Research CenterNational Institute of Information and Communications

Technology, NICT

The ASIA-PACIFIC SEMINAR ON NEXT GENERATION MOBILE COMMUNICATIONS 2005

(AP-NeGeMo’05)

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Seamless and secure integration of various wireless access networks

New Generation Mobile Network Project

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System Beyond IMT-2000 Concept

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Strategy of New Generation Mobile Network Project

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Content

• New Generation Mobile Network Concept

• Main R&D Technology Targets– Software Defined Radio Terminal– Broadband Wireless Access– Media Handover– Wireless Security Platform

• Testbed and Demonstration

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InternetInternet

Mobile PAN

3G APsAdvanced WLAN APsBeyond 3G APs

Software Defined Radio (SDR) Terminals

Signaling Data

New Generation Mobile Network MIRAI+

Metropolitan Ring Network

Mobile Ethernet

Secure Platform

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Toward Business

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Software Defined Radio Terminal 1st and 2nd Prototypes

Hand set

1.5-1.9GHz　band Antenna

5.8GHz band Antenna

First prototype (1999, left)　 PHS, ETC, GPS can be realized by changing software for digital signal processing hardware　 PHS+ETC, GPS+ETC (Electrical Toll Collection system) can be realized simultaneously　 The first prototype to realize actual consumer services in the world

Second prototype (2001, right)　 17.5 cm wide, 19.0 cm deep, and 5 cm high Power supply DC-12.0v 2A, several FPGAs included Software (GPS, VICS, ETC, Broadcasting (AM,FM),FM Multiple service) is prepared Original multi-task algorithm and fast software download method are implemented

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Software Defined Radio Terminal 3rd Prototypes

• Consists of general-purpose FPGA, CPU, and RF boards.

• Software modules for W-CDMA, IEEE802.11a, digital TV and analog TV are available.

• SDR terminal can communicate with commercially available W-CDMA BTS and access points for wireless LAN.

• Based on ITRON.

• Communication systems can be changed manually or automatically.

• Applications: video conference and VoIP based voice communication.

SDR processing partDisplay part

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Beyond 3G Cellular & Hot Spot

• Realize 100 Mbps and above point-to-multipoint communication in high mobility cellular environment.

• Realize 1 Gbps transmission in hot-spot environment.• Adaptively change modulation schemes in both

cellular and hot-spot environment.• Easy to divide PHY and MAC layer.

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DPC (Dynamic Parameter Controlled)-OF/TDMA

f

AP

MS(A)

MS(B) MS(C)

MS(D)

t

AAAAADCCCCCC

AAAAAAAAAAAA

BBAAADCCCCCC

BBAAADAACCCC

BBAABAACCACA

BBAADDCACAAC

12 subchannel

2subchannel6subchannel

1subchannel

t

fSub-channel

Tota

l num

ber

of s

ubca

rrie

rs

Slot (MDS)

TDMA frame

Slot (ACTS)

Preamble Data

Physical layer equipment

Uplink frame format

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Metroplitan Mobile Ring Network• Goal

– Develop large scale micro mobility support in metropolitan area.

• Feature– Flat ring architecture for decentralizing routing information ( no bottleneck nodes ) – L2 independent

• Achievements– Fast handoff implementation – Performance evaluation– Load balancing in extended

WLAN access points

100,000 nodes registrations / LMA100,000 nodes registrations / LMA

Throughput of ring network

1 Gbps

Throughput of ring network

1 Gbps

Throughput of access network

100 Mbps

Throughput of access network

100 Mbps

Handover time 200msHandover time 200ms

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GW

MAP2

binding list

MAP1Internet

CN

IPx

MNa IPaMNb IPb

IPx IPa

IPx IPa

(IPa)MNaMNb

MAP3 MAP4

MNc

(IPb)

(IPc)

Metropolitan Mobile Ring Network

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Fast Handoff Process

• MN moves from oAP to nAP

• nAP sends FH notif to nLMA

• nLMA sends FH req.

• When oLMA receives FH req, oLMA sends FH rep with MN’s IP address and oLMA’s MAC address.

• When nLMA receives FH rep, nLMA registers MN’s IP and MAC addresses to binding list.

• nLMA starts transmission MN’s packet to MN.

oLMA nLMA

nAPoAP

(2) FH notification

(3) FH request [MAC=MACmn, IP=?]

(4) FH reply[MAC=MACmn, IP=IPmn]

(1) Association

MN

binding list

FH request: MN’s MAC addressFH reply: MN’s IP and MAC addresses

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Cross-Network Services and Cross-Network Services and Mobility SupportMobility Support

The InternetThe Internet

MUT Prototype(Multi-service User Terminal)

3G

Home NetworkA Home Network

B

2G

WLAN

PHS

WLAN

WLAN

Available Networks - Ethernet - WLAN (11a / 11b) - 3G (WCDMA) - 2G (cdmaOne / PDC) - PHS (AirH” / @FreeD)

Network Functions -Basic Access Signaling -Mobile IP Home Agent -SIP Proxy

Signaling path

Data path

Handover fromPHS to WLAN

MUT-AMUT-B

Handover fromWLAN to 3G

Video phone

Voice phone

Video phone

Voice phone

PartnerInformation Window

PersonalInformation Window

Network Status -hot: available -cold: not available -BAN: signaling network -RAN: data network

Presence

Main Window

Call button - Video phone - Voice phone - Voice mail

• RAN-overlaid MIRAI– Enables communications using the optimal wireless system based on user

presence, preferences, and network status.

– Separates “data paths” and “signaling path” (any radio network can be chosen for the signaling path).

– Conserves power by switching off all unused RAN interfaces

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Cross-Device Seamless Service SupportCross-Device Seamless Service Support

• Service mobility proxy

– Provides flexible services by discovering and utilizing available networks, devices, and services based on the user’s context and location

– Provides cross-device

handover

– Not reliant on target

applications

NetSpeaker

CNService mobilityproxy

User terminal

Search, discovery, and authentication of nearby services

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Smart Space for Smart Space for Context-Aware Mobile ServicesContext-Aware Mobile Services

Networked devices

Floor sensors

AccessGrid & DVTS/IPWLAN

Bluetooth

RFID

PHS

WLAN RFID

Bluetooth

Location andCommunicationManager

Sensor nodes

Context-aware Services

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Mobile Ethernet• Mobile Ethernet is a 3rd phase evolution from 3G network

using L2 technologies. It allows to plug-in various kinds of radio systems, such as 3G, 4G, and WLANs, following a common MAC interface, network authentication framework and DoS resilient wireless security protocol.

IEEE802MAC Interface

WLAN AP3G AP 4G AP

RadioAccessTechnologies

Segment

Edge Switch

RouterGateway Switch

Mobile Device Correspondent Node

Mobile EthernetInternet

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Secure Service Platform• Unified network/service security framework

• Self-delegation of user’s certificate from smartcard to mobile device

Personalize mobile device with personal information stored in contact-less smartcard

off-the-shelfdeviceElectric Shop Service Provider

Buy mobile device independent of network operator User authentication

using biometrics

Consistent authentication forvarious wireless access networksand for e-commerce services

sweepSmartcard

Mutual DeviceAuthentication

Delegate User’sCertificate

MD

Contact-lessSmartcard

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Radio systems

Mobile Device

Core network

AuthenticationInformation Server

Entry Point

Authentication informationfor mutual authentication

Handover

Data security,Access control

Mutualauthentication

AuthenticationServer Security context transfer

• Core network operator is different from wireless access operators, so user information is kept in the core network

Proactive Network Authentication

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Application Scenario – Audio Visual Chat• Seamless vertical/horizontal handover with QoS control for wir

eless load-balancing and mobility support

Seamless horizontal handover

WLAN APs are freelyinstalled aroundShibuya station

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Application Scenario – E-commerce• Unified network/service security framework for flexible wireless

configuration

• Contact-less certificate delegation from user’s smartcard to a mobile device for ease-of-use

ServiceProvider

Impersonation

Network/ServiceAuthentication

Mobile Ethernet

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HospitalEmergency call by mobile phone with video-recording function

Injury or health condition can be recorded on the

scene by handset to send

an accurate picture to

paramedics.

At the same time, medical

record is made to store the data in the hospital.

Outside wireless LAN area Inside wireless LAN areaHiSWANａ /IEEE802.11a

Inside wireless LAN areaIEEE802.11b

On the ambulance, a patient’s data is constantly recorded, including pulse rate, heart rate, electrocardiogram, blood pressure, condition (video) and injured part (video), etc. to be stored in the on-board server.

Based on the video with the emergency call and data from theambulance, the hospital mayinstruct proper treatment orprepare for a surgery.

High-definition video data etc.

may be transmitted.

High-definition still-image data

etc. may be transmitted

Once the ambulance enters wireless LANcoverage, the stored data may be

transmitted to the hospital.Fire Station

Of all the stored data, pulse rate and anyother data of greater urgency is constantly

transmitted by W-CDMA to the hospital.

54Mb/s

11Mb/s

384kb/s

Application Scenario –Emergency Medical Services

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Concept of Disaster Management System

Application Scenario – Disaster Management

Digital TV Broadcasting

Communication (Req)

+

Mobile Terminalfire department life line company

online video transmission

network

database

electric poles

flood

direct link to satellite

fire status

still picturestill picture

airplaneheli

collapsed bridgeflood status

database

Ⅰ

Ⅱ

Ⅲ

Ⅳ

movingpictures

STATUSⅠⅡⅢⅣ

status of deaths and

injuredstill

pictures

Ⅰ

Ⅱ

Ⅲ

Ⅳ

movingpictures

STATUSⅠⅡⅢⅣ

status of deaths and

injuredstill

pictures

government organizations

present statusmobile terminal

Disaster Management Center

internet

collapsed buildings

visible light and infra red

self-defense

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YRP#2

YRP#1

Car Parking Area, where utilitiy poles were installed.

NICTWe are here

Cafeteria #1

Labo in 7F

Labo in 3F

To Nobi railway station

Monitoring camera

Monitoring camera

20m 150

m

Bus route

実験ハウス

Testbed in Yokosuka Research Park

Type ＡType ＢOptical fiber links

Caféteria #2

Panasonic Mobile Inc.

Fujitsu Inc.

Utility pole attached with a transceiver

Yokosuka Research Park

This area

Digital TV broadcasting antenna

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Summary

• NICT’s Yokosuka Radio Communications Research Center started the Next Generation Mobile Network Project in April 2002.

• The target f this project is the development of new technologies to enable seamless and secure integration of various wireless access networks such as 3G and 4G cellular, wireless LAN, Bluetooth, fixed wireless access (FWA) and intelligent transport system (ITS).

• A testbed for evaluating new technologies and promoting new applications has been established in the Yokosuka Research Park.