Technical kick-off meeting Grosuplje, Sept. 22-25 2008 Karl Johan Grøttum Northern Research Institute, Tromsø, Norway [email protected]

Technical kick-off meetingGrosuplje, Sept. 22-25 2008

Karl Johan Grøttum

Northern Research Institute, Tromsø, [email protected]

www.norut.no

Networking for Communications Challenged Communities: Architecture, Test Beds and Innovative Alliances

Grant Agreement: 223994



Robust data communication in the North

Delay Tolerant Networks

UAV-DTN

UAV-UAV

UAV-SAT

UAV-SHIP

DTN-DTN

BFT

Hikers PDA



Communication issues• Northern Europe is a highly developed region• Laboratory for distributed systems• Fibre Infrastructure• Communication at sea• Communication in “empty” areas

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Hikers PDA:• E-mail, Web-cache and (Not So)IM• Information-push (Your most important, RSS?)

• Weather (snow, rain etc. in-field Weather services)

• Health services (medical-, physical-, heart starter etc.)

• Map with GPS for own location: Maemo Mapper https://garage.maemo.org/projects/maemo-mapper/

• Photo blog or ad-hoc blog (Crocopil application, Windows mobile with ad-hoc wlan net)

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Local information:• Operators and guides• In-field Weather services• Geology and biology• Point Of Interests (telephone mountains?)• Installations• Authorities• Fishing- and hunting-permit• Access information (keys to cottages etc.)18/04/23 www.n4c.eu 5



Nokia 810 application: Maemo Mapper[#1037] Power saving mode for slow motion (walking)Date: 2008-06-06 18:15 Sender: Andrew Daviel On the N810 tablet (internal GPS), it is not the Bluetooth, it is the GPS chip that consumes most power. The version of mapper I have (2.4.1) does not turn on the chip when using localhost:gpsd but does when using Bluetooth to talk to itself - I guess that the N810 listens for Bluetooth location requests and turns on in response (and times out if there are no requests for a while). So, for the N810 at least, this feature (power saving mode which makes a location request every 10-20 minutes) would save battery. Even better would be to use gpsd and the Nokia API to actually turn the chip on and off every few minutes - it takes about 30 seconds to get a fix if it has a recent position and almanac, so getting location every 5 minutes would be a 10x saving in GPS chip power (I estimate 10 hours of tablet battery continually polling the GPS vs 100 hours almost always idle)

Date: 2007-08-02 16:16 Sender: John Costigan Maemo Mapper can't generally tell the bluetooth receiver how often to send updates. It is the receiver's decision. The only other alternative would be to connect to the receiver, get a single point of data, then immediately disconnect. Perhaps there is a GPS receiver that allows you to specify the time resolution of its output?

https://garage.maemo.org/tracker/index.php?func=detail&aid=1037&group_id=29&atid=188



Asus Eee application: Viking map

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Asus Eee application: GPS Drive

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iPhone application: Emergency

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Distress Beacon GPS Locator

Email: An emergency distress beacon was set off by Karl Johan at location 69.673233 , 18.932022.



iPhone application: Air Sharing

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Hardware 1: PDAList criteria's based on lessons learned from

summer test and SNC.• Power (battery etc.)• Temperature• Humidity• Weight• Functional specifications:

GPS, Wlan, Bluetooth, SDK

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PDA Candidates:• Nokia N810 (compared with N800 and 770):

http://wiki.maemo.org/Comparison_of_Internet_Tablet_Models

• Asus Eee PC:http://event.asus.com/eeepc/comparison/eeepc_comparison.htm

• iPhone:http://www.apple.com/iphone/specs.html

• USB stick: Bootable and good for winter test?Easy to carry and exchange with others.

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Nokia N810• Power Management:

2.0mm Charger Connector• Battery Capacity:

BP-4L 3.7V 1500 mAh• Talk Time (estimated):

VoIP: up to 4 hours• Standby Time (estimated):

Up to 12.0 days• Size: 128 x 72 x 14 mm• Weight: 225 g

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How long will the battery last?•Idle, offline mode

- 270 hours •Idle, WiFi on, power saving

mode - 100 hours

•GPS chip on, CPU polling GPS - 11 hours

•Idle, WiFi on, power saving mode OFF - 7 hours

•Idle, display backlight on - 9 hours

•100% CPU (loop doing sqrt), display backlight off - 6 hours



Asus Eee 900 PCBattery: Up to 2.5 hrs*Power Output: 12V, 36W; Input: 100-240V AC, 50/60Hz universal Dimensions: 22.5cm(W) x 17.0cm(D) x 2cm~3.38cm(H)Weight: 0.99 kgNote: * Estimated maximum battery life under Windows XP is measured with

BatteryMark 4.0.1 (in Eee PC Super Hybrid Engine Power-Saving mode, 40% LCD brightness, Wi-Fi off, BT off( if available), and camera disabled). Actual battery life may vary based on product settings, usage patterns and environmental conditions.* Estimated maximum battery life under Linux is measured with JEITA Battery Run Time Measurement Method (in Eee PC Super Hybrid Engine Power-Saving mode, JEITA defined LCD brightness, Wi-Fi off, BT off( if available),and camera disabled). Actual battery life may vary based on product settings, usage patterns and environmental conditions.

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iPhone power and battery :Built-in rechargeable lithium-ion battery • Charging via USB to computer system or power

adapter• Talk time: Up to 5 hours on 3G, Up to 10 hours on 2G • Standby time: Up to 300 hours• Internet use: Up to 5 hours on 3G, Up to 6 hours on

Wi-Fi• Video playback: Up to 7 hours• Audio playback: Up to 24 hours

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iPhone environmental requirements:

• Operating temperature: 32° to 95° F(0° to 35° C)

• Non-operating temperature: -4° to 113° F(-20° to 45° C)

• Relative humidity: 5% to 95% non-condensing • Maximum operating altitude: 10,000 feet

(3000 m)

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Documents

Technical kick-off meeting Grosuplje, Sept. 22-25 2008 Karl Johan Grøttum Northern Research Institute, Tromsø, Norway [email protected]