Transcript Bluetooth Scatternets : An Enhanced Adaptive Scheduling Schema

IP Services over Bluetooth:
Leading the Way
to a New Mobility
Markus Albrecht
Matthias Frank
Peter Martini
Markus Schetelig
Asko Vilavaara
Andre Wenzel
presented by Metin Tekkalmaz
Outline
Introduction
 IP and Mobility
 Bluetooth in Public Areas: Scenarios
 Proposed Concepts
 Conclusion

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Introduction
 BLUEPAC
IP
(Bluetooth Public Access)
 Extention
of IP for mobility issues
in Bluetooth networks
 Takes
IP as a basis
 Also uses ideas in Mobile IP and
Cellular IP
 No modification on upper layers
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IP and Mobility
Both the identification and location
information are handled by the
single IP that the host has
 To support mobility at different
extents, following schemes are
proposed:

Mobile IP
 Cellular IP

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IP and Mobility: Mobile IP
Mobile Node
 Home Agent
 Foreign Agent
 Home Address
 Care-of-Address
 Correspondent Host
 Tunneling

Home
Agent
Foreign4 Mobile
Agent
Node
Correspondent
Host
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IP and Mobility: Celluar IP
Solution for
mobile hosts
in a LAN
 Consists of

Gateway
 Routers
 Base Stations
 Mobile Hosts
INTERNET
Gateway Router GW
Cellular IP
Access Network

Base station BS
BS
BS
BS
MH Mobile Host
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IP and Mobility: Celluar IP

Other key concepts:
Beaconing
 Routing Caches
 Mapping Timeouts
 Reconfiguration of caches due to
handoffs

Specifically designed for highly
mobile hosts
 Can incorporate with Mobile IP

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Bluetooth in Public Areas:
Scenarios

Scenarios w/ low user mobility


Aeroplanes, trains, hotel rooms etc.
Scenarios w/ high user mobility
Railway stations, airport terminals
 Cinemas, opera houses
 Tours through museums, zoos etc.

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Protocol Concepts for BLUEPAC IP
- General Requirements

General requirements to establish a
BLUEPAC connection:
Connectivity of devices via BT
technology, OSI layer 2
 Connectivity of (foreign) BT devices in
BLUEPAC area, OSI layer 3

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Protocol Concepts for BLUEPAC IP
- Reference Network Architecture
BLUEPAC LAN
 Gateway
(GW)
 BT Device
 BLUEPAC
Base Station
(BBS)

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Protocol Concepts for BLUEPAC IP
- Network w/ Functional Elements

Application Server & BLUEPAC Agent
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Protocol Concepts for BLUEPAC IP
- IP Issues for a foreign device

If foreign device already has an IP
Provide registration with HOME Agent
 Authenticate device if necessary

How Mobile IP is integrated?
 If foreign device has no IP

Assign an IP to the device
 Global vs. Local IP assignment

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Protocol Concepts for BLUEPAC IP
- Handoff Support
Based on Celluar IP
 A routing mechanism regardless of
the location within the network
 Connection should be kept alive
when changing base station

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Protocol Concepts for BLUEPAC IP
- IP Assignment & Handoffs
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Conclusion
Has nothing new
 Just combines existing ideas and
protocols
 Not an in-depth study

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