EDIM - Revision history

Johnwayne: /* Distributed Software Deployment and Updates in a Wireless Mesh Network */

2008-08-30T23:21:02Z

Distributed Software Deployment and Updates in a Wireless Mesh Network

← Older revision		Revision as of 23:21, 30 August 2008
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	See also		See also
	[http://sar/research/publications/SAR-PR-2006-01/SAR-PR-2006-01_.pdf SAR-PR-2006-01 Development of a Software Distribution Platform for the Berlin Roof Net (Diplomarbeit / Masters Thesis). Bernhard Wiedemann. 73 pages.] or ~~<nowiki><a href='~~http://www.roonk.de~~'>Roonk</a></nowiki>~~		[http://sar/research/publications/SAR-PR-2006-01/SAR-PR-2006-01_.pdf SAR-PR-2006-01 Development of a Software Distribution Platform for the Berlin Roof Net (Diplomarbeit / Masters Thesis). Bernhard Wiedemann. 73 pages.] or [http://www.roonk.de roonk]

Johnwayne: /* Distributed Software Deployment and Updates in a Wireless Mesh Network */

2008-08-30T23:19:13Z

Distributed Software Deployment and Updates in a Wireless Mesh Network

← Older revision		Revision as of 23:19, 30 August 2008
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	See also		See also
	[http://sar/research/publications/SAR-PR-2006-01/SAR-PR-2006-01_.pdf SAR-PR-2006-01 Development of a Software Distribution Platform for the Berlin Roof Net (Diplomarbeit / Masters Thesis). Bernhard Wiedemann. 73 pages.] or [http://www.roonk.de Roonk]		[http://sar/research/publications/SAR-PR-2006-01/SAR-PR-2006-01_.pdf SAR-PR-2006-01 Development of a Software Distribution Platform for the Berlin Roof Net (Diplomarbeit / Masters Thesis). Bernhard Wiedemann. 73 pages.] or <nowiki><a href='http://www.roonk.de'>Roonk</a></nowiki>

Johnwayne at 23:18, 30 August 2008

2008-08-30T23:18:28Z

← Older revision		Revision as of 23:18, 30 August 2008
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	See also		See also
	[http://sar/research/publications/SAR-PR-2006-01/SAR-PR-2006-01_.pdf SAR-PR-2006-01 Development of a Software Distribution Platform for the Berlin Roof Net (Diplomarbeit / Masters Thesis). Bernhard Wiedemann. 73 pages.]		[http://sar/research/publications/SAR-PR-2006-01/SAR-PR-2006-01_.pdf SAR-PR-2006-01 Development of a Software Distribution Platform for the Berlin Roof Net (Diplomarbeit / Masters Thesis). Bernhard Wiedemann. 73 pages.] or [http://www.roonk.de Roonk]

Lichtblau: /* EDIM - An Earthquake Disaster Information System for Marmara */

2008-06-18T11:58:25Z

EDIM - An Earthquake Disaster Information System for Marmara

← Older revision		Revision as of 11:58, 18 June 2008
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	''Partners:'' [http://www.gfz-potsdam.de/ GFZ Potsdam], [http://www.uni-karlsruhe.de/ Universität Karlsruhe], [http://www.koeri.boun.edu.tr/ KOERI], [http://www.cedim.de/ CEDIM]<br/>		''Partners:'' [http://www.gfz-potsdam.de/ GFZ Potsdam], [http://www.uni-karlsruhe.de/ Universität Karlsruhe], [http://www.koeri.boun.edu.tr/ KOERI], [http://www.cedim.de/ CEDIM]<br/>
	''Roadmap:'' The project started April 2007<br/>		''Roadmap:'' The project started April 2007<br/>
	''Hardware:'' [[Wireless-Devices:WRAP-Board]]		''Hardware:'' [[Wireless-Devices:WRAP-Board]]<br>
			''Software:'' [[EDIM:Software]]<br>

	== Research Opportunities ==		== Research Opportunities ==

Lichtblau: /* Research Opportunities */

2007-11-27T15:20:11Z

Research Opportunities

← Older revision		Revision as of 15:20, 27 November 2007
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	The simulation of wireless networks is based on assumptions about the timing behaviour of each component. However, that very much depends on the hardware & software used. The goal of this project is to evaluate the timing behaviour of both the Atheros hardware, the device driver and the 802.11 stack used in the SAFER and EDIM projects. One result could be a ns-2 simulation of the components.		The simulation of wireless networks is based on assumptions about the timing behaviour of each component. However, that very much depends on the hardware & software used. The goal of this project is to evaluate the timing behaviour of both the Atheros hardware, the device driver and the 802.11 stack used in the SAFER and EDIM projects. One result could be a ns-2 simulation of the components.

			=== Distributed Software Deployment and Updates in a Wireless Mesh Network ===

			Every system needs new or updated software from time to time, in development even regularly, and no one wants to update software by hand, especially in a wireless mesh network where you would have to update many systems. Thus an automated distributed software deployment and update scheme for a wireless mesh network like in the EDIM project is needed, which has to solve following questions:

			* How to distribute software efficiently?
			* How to ensure all nodes in the network received the software to update?
			* How to ensure that all nodes update at the same time (as they may become incompatible to each other with the update) ?
			* How to ensure version consistency?
			* How to recover from a bad update where something went wrong ?
			* (Special to our hardware: Is it possible to update the complete system, or only some software on top of the system?)
			* ...

			See also
			[http://sar/research/publications/SAR-PR-2006-01/SAR-PR-2006-01_.pdf SAR-PR-2006-01 Development of a Software Distribution Platform for the Berlin Roof Net (Diplomarbeit / Masters Thesis). Bernhard Wiedemann. 73 pages.]

Nachtigall: /* EDIM - An Earthquake Disaster Information System for Marmara */

2007-11-27T10:17:49Z

EDIM - An Earthquake Disaster Information System for Marmara

← Older revision		Revision as of 10:17, 27 November 2007
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	''Partners:'' [http://www.gfz-potsdam.de/ GFZ Potsdam], [http://www.uni-karlsruhe.de/ Universität Karlsruhe], [http://www.koeri.boun.edu.tr/ KOERI], [http://www.cedim.de/ CEDIM]<br/>		''Partners:'' [http://www.gfz-potsdam.de/ GFZ Potsdam], [http://www.uni-karlsruhe.de/ Universität Karlsruhe], [http://www.koeri.boun.edu.tr/ KOERI], [http://www.cedim.de/ CEDIM]<br/>
	''Roadmap:'' The project started April 2007		''Roadmap:'' The project started April 2007<br/>
			''Hardware:'' [[Wireless-Devices:WRAP-Board]]

	== Research Opportunities ==		== Research Opportunities ==

Kkoehne: /* Research Opportunities */

2007-06-26T12:48:07Z

Research Opportunities

← Older revision		Revision as of 12:48, 26 June 2007
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	This is a list of possible topics for scientific work ("Dissertationen", "Diplom"- or "Studienarbeiten"). Some tasks are also more engineering like and more suitable for "Studienarbeiten". This list is to be extended and will always be work in progress. It ranges from more or less brain-storming to more concrete ideas:		This is a list of possible topics for scientific work ("Dissertationen", "Diplom"- or "Studienarbeiten"). Some tasks are also more engineering like and more suitable for "Studienarbeiten". This list is to be extended and will always be work in progress. It ranges from more or less brain-storming to more concrete ideas:

	=== ~~Priority~~-~~Based~~ Wireless ~~Medium~~ ~~Access~~ ===		=== Multi-Channel Protocols for Wireless Mesh Networks ===

	Standard 802.11 DCF does neither support service differentiation nor fairness. Various algorithm and protocols have been developed that support QoS in wireless networks; however, most of them have never been actually implemented. One exception is the EDCA, which is part of 802.11e: It supports four different priority levels, but has various limitations in the context of mesh networks.

	The SoftMAC project allows the implementation of different medium access algorithms using standard Atheros hardware. Goal of the project is to test various proposed algorithms in a real testbed, and develop new ones.		The SoftMAC project allows the implementation of different medium access algorithms using standard Atheros hardware. Goal of the project is to test various proposed algorithms in a real testbed, and develop new ones.

Kkoehne: /* Time Synchronization in Multi-hop Networks */

2007-06-21T12:22:48Z

Time Synchronization in Multi-hop Networks

← Older revision		Revision as of 12:22, 21 June 2007
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	[http://citeseer.ist.psu.edu/blum03precise.html Blum, Thiele: Precise and Low-Jitter Wireless Time Synchronization (2003)]<br/>		[http://citeseer.ist.psu.edu/blum03precise.html Blum, Thiele: Precise and Low-Jitter Wireless Time Synchronization (2003)]<br/>
	[http://citeseer.ist.psu.edu/742303.html Römer, Blum, Meier: Time synchronization and calibration in wireless sensor networks (2005)]<br/>		[http://citeseer.ist.psu.edu/742303.html Römer, Blum, Meier: Time synchronization and calibration in wireless sensor networks (2005)]<br/>
			[http://portal.acm.org/citation.cfm?id=1240228&coll=ACM&dl=ACM&CFID=21968823&CFTOKEN=94415220 Yoon, Veerarittiphan, Sichitiu, Tiny-sync: Tight time synchronization for wireless sensor networks (2007)]

	=== Coding & Aggregation for MiniSEED Data Streams ===		=== Coding & Aggregation for MiniSEED Data Streams ===

Kkoehne: /* Time Synchronization in Multi-hop Networks */

2007-06-18T14:13:39Z

Time Synchronization in Multi-hop Networks

← Older revision		Revision as of 14:13, 18 June 2007
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	http://www.ais.fraunhofer.de/~mock/Sensornetzwerke/DSNetzwerke_clock_12.pdf<br/>		http://www.ais.fraunhofer.de/~mock/Sensornetzwerke/DSNetzwerke_clock_12.pdf<br/>
	Holger Karl, Andreas Willig, Protocols and Architectures for Wireless Sensor Networks, Wiley & Sons Inc. 2005<br/>		Holger Karl, Andreas Willig, Protocols and Architectures for Wireless Sensor Networks, Wiley & Sons Inc. 2005<br/>
	[http://citeseer.ist.psu.edu/blum03precise.html Blum, Thiele: Precise and Low-Jitter Wireless Time Synchronization]<br/>		[http://citeseer.ist.psu.edu/blum03precise.html Blum, Thiele: Precise and Low-Jitter Wireless Time Synchronization (2003)]<br/>
	[http://citeseer.ist.psu.edu/742303.html Römer, Blum, Meier: Time synchronization and calibration in wireless sensor networks]<br/>		[http://citeseer.ist.psu.edu/742303.html Römer, Blum, Meier: Time synchronization and calibration in wireless sensor networks (2005)]<br/>

	=== Coding & Aggregation for MiniSEED Data Streams ===		=== Coding & Aggregation for MiniSEED Data Streams ===

Kkoehne: /* Time Synchronization in Multi-hop Networks */

2007-06-15T12:32:29Z

Time Synchronization in Multi-hop Networks

← Older revision		Revision as of 12:32, 15 June 2007
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	=== Time Synchronization in Multi-hop Networks ===		=== Time Synchronization in Multi-hop Networks ===

	Geo monitoring applications often require knowledge about the exact time (e.g. UTC) a measurement is recorded. Goal of the project is to evaluate current approaches to external time synchronisation in distributed multi-hop networks - in contrast to internal time synchronization, where the nodes only try to ~~synchronization~~ all clocks within the network. Aim is to achieve high precision (10 msec max deviation) combined with low overhead, using standard 802.11 hardware. In a first step only pair-wise synchronization will be studied, adding network wide synchronization later on. The example application of the study is the SAFER project, where some of the GPS receivers will have no connection, and need to be synchronized over the network.		Geo monitoring applications often require knowledge about the exact time (e.g. UTC) a measurement is recorded. Goal of the project is to evaluate current approaches to external time synchronisation in distributed multi-hop networks - in contrast to internal time synchronization, where the nodes only try to synchronize all clocks within the network. Aim is to achieve high precision (10 msec max deviation) combined with low overhead, using standard 802.11 hardware. In a first step only pair-wise synchronization will be studied, adding network wide synchronization later on. The example application of the study is the SAFER project, where some of the GPS receivers will have no connection, and need to be synchronized over the network.

	Possible Research Questions:		Possible Research Questions: