Dublin Ad-hoc Wireless Network (DAWN)
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Dublin Ad-hoc Wireless Network
Southbound Dart status from Pearse Station
Introduction
Dublin Ad-hoc Wireless Network (DAWN) is a project undertaken by the Networks & Telecommunications Research Group (NTRG) of Trinity College Dublin that aims to build a production ad-hoc network operational in the entire city of Dublin. DAWN aims not only to be a testbed for the research undertaken at the NTRG, but also to serve as a prototype 4th Generation Mobile Network.Aims
The basic aims of DAWN are summarised below:- Building a production ad-hoc network in three main phases that will be operational in:
- Phase 1: Parts of Trinity College campus (completed end of August 2002).
- Phase 2: Trinity College Campus and Dublin city centre.
- Phase 3: City-wide.
- Test the scalability of ad-hoc networks.
- Allow new 'ad-hoc' applications to be developed and deployed.
- Provide a testbed for the research undertaken at the NTRG.
Current State
Currently the Dublin Ad-hoc Wireless Network (DAWN) has successfully completed Phase 1 (end of August 2002) and is fully operational in parts of the Trinity College campus:
The NTRG is at the moment actively working towards realising the second phase of DAWN. When Phase 2 is complete, DAWN will cover the entire Trinity College campus, as well as parts of the Dublin city centre.
Applications
The NTRG has developed a number of applications that work on top of the Dublin Ad-hoc Wireless Network (DAWN):- Ad-hoc Chat: An application that can be utilised in order to allow the communication of nodes participating in the ad-hoc network via text messages.
- 4GPhone: A demonstrator of some of our ideas on where 4th generation telephony is going. This is comprised of a simple person-to-person telephony using the Session Initiation Protocol (SIP) as the signalling protocol, and DSR as the ad-hoc routing protocol.
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The NTRG Protocol Stack
The NTRG ad-hoc protocol stack employs a generic layer architecture that seeks to allow a LEGO-like approach to the development and assembly of networking protocols:- Wireless support: 802.11b, VHF Amateur, Radio, IrDa, Serial line.
- Routing protocols: DSR, OLSR, ZRP, AODV.
- Encryption: AES (Rijndael), Blowfish.
- Error detection: CRC-32.
- P2P: Nom - Name resolver, MANIFOLD (Overlay network constructor ...reminiscent of Microsoft PASTRY).
- Applications: Instant messenger, web access, 4th generation phone, interactive spaces apps...
