1. All Rights Reserved, Copyright, 2002, Hitachi Europe SAS Ad Hoc Networks: Applications and Merits Dr. Stéphane Amarger Masato Hayashi Hitachi Europe Sophia-Antipolis Laboratory Workshop on Broadband Wireless Ad-Hoc Networks and Services, 12th - 13th September 2002, ETSI, Sophia Antipolis, France

2. All Rights Reserved, Copyright, 2002, Hitachi Europe SAS Public Area - Autonomous networking on the spot for temporary purpose without any help of operator network (Instant Network) - All terminals can be mobile (dynamic Network) - Anywhere, Anytime, Anybody,Anything,,, (Ubiquity) After gathering Connection Service Finish Good-bye E.g. - Meeting - Game - Walky-talky - Mail etc. Freedom of Networking Ad hoc Network System

3. All Rights Reserved, Copyright, 2002, Hitachi Europe SAS Ad hoc Communication Technologies Network layer Multihop Dynamic Routing Network layer Multihop Dynamic Routing Group Management Security Presence Group Management Security Presence Application ITS P2P Home network etc.Application ITS P2P Home network etc. IP Routing Group communication Ad hoc service Three Layers

4. All Rights Reserved, Copyright, 2002, Hitachi Europe SAS Network layer ◆ Independent of Operator Network Direct connection among Devices ◆ Multihopping Data relay over intermediate devices ◆ Dynamic routing Autonomous new route discovery ac e h b d f g Moving Multihop New route

5. All Rights Reserved, Copyright, 2002, Hitachi Europe SAS Standardizations The Mobile Ad-hoc Networking (manet) : a chartered working group within the IETF –Unicast protocol Ad Hoc On Demand Distance Vector (AODV) routing Optimized Link State Routing Protocol (OLSR) –Multicast protocol Multicast Ad hoc On-Demand Distance Vector (MAODV) routing Differential destination Multicast (DDM) On-Demand Multicast Routing Protocol (ODMRP)

6. All Rights Reserved, Copyright, 2002, Hitachi Europe SAS Standardization of Ad hoc Routing [Ad hoc network] 宛先 Next Hop bb cc db eb fb a b c d e f MethodOLSRTBRPFDDR Company INRIASRIEurecom/Hitachi Subnet subnet NW structure subnet flat Maintenance of route Exchange in need （ and cached ） Exchange information Only Neighbor information Full Topology information Topology change Refresh in needPeriodical refresh Refresh of subnet in need Scalability ○ △◎ Routing overhead Constant ： ○ Small changes ： ◎ Many changes ： △ Constant ： ○ ○ ○ △ Hitachi and Eurecom developed DDR for a large scalability, and now considering about joint researches with INRIA (OLSR) TBRPF: Topology Broadcast Based on Reverse-Path Forwarding OLSR : Optimized Link State Routing DDR : Distributed Dynamic Routing subnet Periodical exchange of route information Robustness to route change

7. All Rights Reserved, Copyright, 2002, Hitachi Europe SAS Group Management Application group control File transfer Manager of group Session1 Session2 Service Advertisement / Discovery Group Control Session1 Session2 Group Termination Process flow Service Termination Group Management : Tracking of group members Session Management : Application connection control Session

8. All Rights Reserved, Copyright, 2002, Hitachi Europe SAS Ad hoc demonstration System Wireless Technology : WLAN (IEEE802.11b) ① Ad Hoc Network routing （ DDR) － Topology Monitor － Multi-hopping － Dynamic Routing ② Application examples － Security Monitoring System － Mobile P2P(file sharing,chat) Scenario Demonstration room Video Server GW Monitor Fig. Demonstration System - Network Topology - Video Monitor Camera 1 Camera 2 Multi-hopping WLAN Dynamic Routing Change of GW GW PC7 PC6

9. All Rights Reserved, Copyright, 2002, Hitachi Europe SAS Topology monitoring Topology monitoring QoS Software architecture and Development WinCE.NET/WindowsXP/Linux OLSR/DDR White Board Implementation for Ad hoc Routing （ OLSR 、 DDR ） –Linux version (current version) –WinCE.NET/WindowsXP version (future version) Group management and security (this autumn) P2P Platform –Implementation of JXTA on Linux (current version) –WinCE.NET/WindowsXP version (under working) –Implementation of GLUE/GAIA by TME(under working) Installation of multipoint-to-multipoint type IM/VoIP/WhiteBoard (P2P type application) (under development) Group management, Security P2P Platform Wireless LAN （ 802.11b ） TCP/IP(IPv4/v6) IM VoIP Video Chat Linux OLSR/DDR File sharing Video Chat Wireless LAN （ 802.11b ） Future version (03/4) Topology monitoring Topology monitoring TCP/IP(IPv4) P2P Platform Current version (02/6)

10. All Rights Reserved, Copyright, 2002, Hitachi Europe SAS Application example (1) ： Network for a construction site a construction site Temporary Office on site Ad hoc Network Constructing a network easily (temporally) Deploying sensors and cameras flexibly to monitor NetPDA Lightweight, small device IM/VoIP/Vide real time communication Construction network under proceeding development everyday Establishment of communications between a construction site and its office in a real time (Text, Voice and image)

11. All Rights Reserved, Copyright, 2002, Hitachi Europe SAS Application example （ 2 ）： Network between vehicles - ITS Constructing a network between vehicles or between access post and vehicles Collection of probe information （ speed 、 ABS 、 wipers, etc ）, delivering various information Car Internet center Internet

12. All Rights Reserved, Copyright, 2002, Hitachi Europe SAS Experiment at HSAL (1) : Ad hoc Networking between Vehicles Application : Video Image Transmission Case I :Transmission from Moving car to Stationary car Camera Stationary Receiver Case II :Transmission from Stationary car to Moving car SenderStationary Moving Sender Camera Moving Receiver Speed : 10 ～ 20 km/h Max radio range : Around 100 m for WLAN card

13. All Rights Reserved, Copyright, 2002, Hitachi Europe SAS Experiment at HSAL (2) : Ad hoc Networking between Vehicles Case III : Multihopping between stationary cars Stationary cars Receiver Video SenderRelay Case IV : Transmission between Moving cars Video Sender About 30 m About 60 m About 20 ～ 40 m Receiver Speed : 60 ～ 80 km/h

14. All Rights Reserved, Copyright, 2002, Hitachi Europe SAS Monitor system for security company Networking among staffs on patrol Application Advantages Instant networking in need on the scene - Covering radio shadow of operator’s network - Easy deployment of monitor cameras Embedded Camera Ad hoc Relay Application example （ 3 ）： Security System, Emergency System

15. All Rights Reserved, Copyright, 2002, Hitachi Europe SAS -Easy covering all home area -Easy installation of Home security System(Monitor) - Cost cut by ad hoc networking (relay) between access point and home appliances ADSL CATV FTTH Advantages Application example （ 4 ）： Home Networking multihopping

16. All Rights Reserved, Copyright, 2002, Hitachi Europe SAS Ad hoc Network between BSs Servers for Intranet DMZ GW FW RadiusIM/MailWeb ・・・ IEEE802.1x authentication Easy installation of WLAN network system with use of ad hoc networking betweens base station (BS)s of WLAN Instant P2P communication on business site Instant Network by Ad hoc IM/VoIP Internet Public WLAN area 3G IM/VoIP Application example （ 5 ）： Office Networking