1. Internet in your pocket
Big network in small devices
Marcin Michalak
STC Seminar – May 24th

2. Agenda PDA – Personal Digital Assistant
Wireless networks: types and specs:
WLAN
Bluetooth
GPRS
Equipment list
Experiments:
Bluetooth/GPRS/IrDA/IPv6
audio/video/web browsing/chatting
STC Seminar – May 24th

3. iPAQ – what is it? product from COMPAQ (HPQ)
206 MHz strongARM processor
64MB RAM, 32 MB Flash ROM
IrDA, Bluetooth
320x240 colour touch screen
audio in/out
secure digital (SD) card slot
expansion modules
VGA output expansion (presentations...)
STC Seminar – May 24th

4. Wireless technologies - overview
WLAN – Wireless Ethernet (802.11b)
Bluetooth – short range, small devices
GPRS – extension of mobile networks
STC Seminar – May 24th

5. Wireless LAN working? Wireless Ethernet up to 11Mbps
IEEE b standard
Access points + PCI/PCMCIA cards
working?
STC Seminar – May 24th

6. Wireless connection for all mobile devices
Bluetooth overview
Wireless connection for all mobile devices
small, cheap & simple(goal:1 unit<$10)
low power consumption (batteries...)
2.4 GHz ISM band (unlicensed)
79 channels, frequency hopping
speed up to 721 kbps
open standard
supported by 1000s of manufacturers
(not just) IrDA replacement
STC Seminar – May 24th

7. Frequency Hopping principle
79 channels
1600 hops / second !!!
time
STC Seminar – May 24th

8. Piconet Star Topology Master: Logical Channels
1 Master, up to 7 active slaves
Unlimited number of parked slaves
Master:
determines hopping scheme and timing
Administers piconet (polling)
Logical Channels
Asynchronous, packet oriented - ACL
Synchronous, connection-oriented (voice, slot reservation) - SCO 7 5 4 P 6 M 1 3 P P 2
Master M
parked slave P
active slave
standby n
STC Seminar – May 24th

9. Scatternet multiple piconets overlapping coverage areas
one master / piconet
master for one piconet may be slave for another piconet
each piconet has its own hopping scheme M M M
How many piconets?
STC Seminar – May 24th

10. Scatternet multiple piconets overlapping coverage areas
one master / piconet
master for one piconet may be slave for another piconet
each piconet has its own hopping scheme M M M
STC Seminar – May 24th

11. Bluetooth equipment
built in: notebooks, PDAs, mobile phones, cameras, pens…
PCMCIA cards, USB adapters, motherboards
printer adapters
hands-free
STC Seminar – May 24th

12. Bluetooth - applications
connecting devices in short range:
hands-free to phone
transfer pictures from camera to PC/printer
connect to Internet
phone2phone: send business card
cordless phone (like DECT)
send/receive files (LAN)
how? -> SDP – service discovery protocol
- Master’s Thesis
STC Seminar – May 24th

13. GPRS General Packet Radio Services extension to GSM network
packet-based transmission
volume-based charging
always-on connectivity
multi-slot operation
up to 171 kbps download
STC Seminar – May 24th

14. GPRS – what’s the trick? 2G: GSM: 8 Time slots (TS)1 2 3 4 5 6 7 8
one user = one time slot = one call
speed: 9.6 kbps (14.4 kbps extended)
2,5 G: GPRS: 8 Time slots (TS) 1 2 2 3 4 5 6 6 7 7 8
one user = many slots assigned on demand
speed: up to kbps (8 x 21.4 kbps)
STC Seminar – May 24th

15. What we have: Ericsson T39m with GPRS & Bluetooth
iPAQ 3870 with Bluetooth and Linux
3Com Bluetooth PCMCIA card
3Com Bluetooth USB adapter
notebook with Linux and Windows
iPAQ 3660
with Pocket
Windows
Compaq
WLAN PCMCIA card
Compaq
WLAN Access Point
STC Seminar – May 24th

16. Demos - list basic connectivity: GPRS web browsing (iihe, ngnlab, ...)
Windows with IrDA/Bluetooth (notebook/iPAQ)
Linux with Bluetooth (iPAQ)
web browsing (iihe, ngnlab, ...)
audio & video transfer
Windows: Media Player + PocketTV
Linux: vic (IPv6), rat + scream (audio), gaim
IPv6 – setting up the Freenet6 tunnel (iPAQ)
iPAQ Linux applications
STC Seminar – May 24th

17. Task 0 (easy): Notebook with GPRS
always-on connectivity
like Dial-UP (speed as well...)
IrDA or Bluetooth
PIN: 1111
let me do it myself...
www
mail
Internet
IrDA
GSM/GPRS
network
STC Seminar – May 24th

18. Task 1: iPAQ to GPRS iPAQ: turn on iPAQ 3660 tap the flag
choose ‘Settings’
tap ‘Connections’ tab
tap ‘Connections’ icon
make sure ‘gprs proximus’ is chosen
Phone:
Extras/4 Infrared Port/On
place it next to (above) iPAQ
tap ‘Connect’ button
wait... and use
STC Seminar – May 24th

19. Task 2: Use and enjoy web browsing: Internet Explorer multimedia:
playing MP3 files
Windows Media Player (4FM, videos)
PocketTV – live feed
check , chat, ...
Note: check phone battery after usage (infrared)
STC Seminar – May 24th

20. OK, let’s get serious... Linux on iPAQ 3870 (X-Windows incl.)
Bluetooth working (uffff....)
GPRS connection via Bluetooth
Bluetooth connection via notebook
GPRS
STC Seminar – May 24th

21. Task 3: Connect to phone/GPRS
prepare the phone
run:
rfcommd –n –f /etc/rfcommdGPRS.conf na 00:80:37:11:8f:ed
short: ./GPRS
see the output
on the phone (slide down)
on iPAQ
remarks:
Bluetooth emulates serial connection (like IrDA)
GPRS service: extra needed
STC Seminar – May 24th

22. Task 4: IPv6 connectivity
Freenet6.net service – free & everybody
works on Windows NT, 2000, Linux, FreeBSD
your computer may also be a router!
run on iPAQ:
tspc
run: ifconfig
run:
ping6
ping6
ping6
STC Seminar – May 24th

23. IPv6 tunnel – how it works?
connection to Internet IPv4 via Bluetooth & GPRS
IPv6-over-IPv4 tunnel to Freenet6
connection to EURODEMO through Canada...
IPv6
IPv6-in-IPv4 tunnel
Internet
Freenet6 server
@Viagenie.ca
GSM/GPRS
network
STC Seminar – May 24th

24. Task 5: Bluetooth connection
notebook as a router
Bluetooth USB Adapter
connection up to 721kbps
run:
./NB
tspc (another IPv6 tunnel)
check if works (ifconfig, ping)
next step is...
STC Seminar – May 24th

25. Task 6: Applications research can be fun! web browsing with dillo
playing audio – scream
listening to the radio online
vic and rat over IPv4/IPv6
gaim – chat
and more...
research can be fun!
STC Seminar – May 24th

26. dillo – web browser Menu/Viewers/dillo F/Open URL...
browse your favourites
STC Seminar – May 24th

27. scream – audio player play mp3 files listen to the radio online:
Mode-> Icecast
Server tab/+/choose
STC Seminar – May 24th

28. vic and rat let’s try... IPv4: webmail PC & iPAQ
3ffe:b80:2:883f::c1be:f72b
let’s try...
IPv4: webmail PC & iPAQ
IPv6 (vic): Isabel PC & iPAQ
(Isabel)
3ffe:b80:ca5:1:260:97ff:fe25:e8d8
IPv4
(webmail)
STC Seminar – May 24th

29. gaim – chatting... supports: feel like talking? ICQ IRC MSN Yahoo
STC Seminar – May 24th

30. Thank You!
Questions?
STC Seminar – May 24th