BerlinRoofNet: Difference between revisions
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[http://willa-ford-mp3.boom.ru/ | Willa Ford Mp3] |
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The [http://www.pdos.lcs.mit.edu/roofnet/ MIT Roof Net project] has demonstrated that it is possible to provide an 802.11b-based wireless network backbone infrastructure in a city like Boston (MA). The Berlin Roof Net project tries to determine if a similar network can be setup in Berlin/Germany. |
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[http://used_ford_truck.chat.ru/ | Used Ford Truck] |
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[http://used_ford_rang.chat.ru/ | Used Ford Rang] |
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The Boston network consists of approximately 40 nodes that are mounted on the roofs of buildings (hence the name ’roof net’) and is operated by students and other volunteers. RoofNet nodes discover each other automatically and create a mesh network, which, with the help of proper routing protocols, allow for transmission of IP packets between any two nodes of the network, with data rates of about 1Mbps. |
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[http://used_ford_auto.chat.ru/ | Used Ford Auto] |
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[http://texas-ford-dea.boom.ru/ | Texas Ford Dea] |
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Berlin has unique properties that make the establishment of such a roof network challenging: |
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[http://texas_ford_deale.chat.ru/ | Texas Ford Deale] |
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[http://senator-john.boom.ru/ | Senator John] |
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* Berlin has generally higher buildings with more metal structures than Boston. |
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[http://remanufactured_f.chat.ru/ | Remanufactured F] |
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* Distances between project participants tend to be larger in Berlin than in Boston. |
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[http://q1997_ford_explo.chat.ru/ | Q1997 Ford Explo] |
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* It is yet unknown whether the mounting of RoofNet nodes/antennas on buildings is practicable in Berlin. |
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[http://q1997_ford_esc.chat.ru/ | Q1997 Ford Esc] |
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* Radio interference may be more intense in Berlin due to more systems that are simultaneously operated at 2.4 GHz. |
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[http://q1996_exporer.chat.ru/ | Q1996 Exporer] |
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* The acceptance of radio-based communication by the general public may be less pronounced in Berlin than in Boston. |
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[http://problem_with_for.chat.ru/ | Problem With For] |
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[http://picture-of-henry.boom.ru/ | Picture Of Henry ] |
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[http://old-ford-truck.boom.ru/ | Old Ford Truck] |
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==Real-time Map== |
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[http://northern_califor.chat.ru/ | Northern Califor] |
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* '''Real-time''' status of the indoor testbed [http://sarwiki.informatik.hu-berlin.de/~tolja/cgi-bin/brnlinkmetric.svg] (Adobe SVG plugin [http://www.adobe.com/svg/viewer/install/main.html] required) |
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[http://new-ford-truck.boom.ru/ | New Ford Truck] |
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[[Image:Brnviewer.png|thumbnail|center|500px|BRN Viewer]] |
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[http://model_a_ford.chat.ru/ | Model A Ford] |
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[http://melissa_ford_pho.chat.ru/ | Melissa Ford Pho] |
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==Project Status== |
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[http://john_ford_tennes.chat.ru/ | John Ford Tennes] |
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[http://john_bleakley_fo.chat.ru/ | John Bleakley Fo] |
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[[Image:Roadmap.png|thumbnail|center|500px|BRN-RoadMap]] |
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[http://indiana_ford_dea.chat.ru/ | Indiana Ford Dea] |
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[http://henry_ford_mus.chat.ru/ | Henry Ford Mus] |
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==Frequently Asked Questions about the Berlin RoofNet Project== |
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[http://henry_ford_hos.chat.ru/ | Henry Ford Hos] |
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[http://ford-focus-svt.boom.ru/ | Ford Focus Svt] |
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'''Q: What is Berlin Roof Net?''' |
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[http://ford-explor.chat.ru/ | Ford Explor] |
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[http://ford-conversion.boom.ru/ | Ford Conversion] |
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'''A:''' 'Berlin Roof Net' is a project run by volunteer students of the [http://www.informatik.hu-berlin.de/ Computer Science Department] at [http://www.hu-berlin.de/ Humboldt University Berlin]. The goal is to construct a network of nodes (access points) which share Internet access over wireless radio connections. The access points are run independently by the students with their own equipment. |
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[http://ford-commercial.boom.ru/ | Ford Commercial] |
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[http://ford-body-part.boom.ru/ | Ford Body Part] |
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The project was inspired by the [http://www.pdos.lcs.mit.edu/roofnet/ MIT RoofNet] project in Boston, USA. |
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[http://ford-amphitheat.boom.ru/ | Ford Amphitheat] |
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[http://ford_windstar_pa.chat.ru/ | Ford Windstar Pa] |
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[http://ford_truck_sea.chat.ru/ | Ford Truck Sea] |
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'''Q: Which wireless communication technologies are used?''' |
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[http://ford_truck_recal.chat.ru/ | Ford Truck Recal] |
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[http://ford_truck_per.chat.ru/ | Ford Truck Per] |
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'''A:''' One technology that is economically feasible for our purpose is IEEE 802.11b, also known as [[WiFi]] or [[Wireless LAN]]. However, the communication range of this technology is rather limited, especially in cities with no line of sight (NLOS) between the participating nodes. We would like to augment our system with 802.16a (WiMax) technology, which provides longer communication ranges and higher data rates, as soon as such equipment becomes available at a reasonable price. |
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[http://ford_tractor.chat.ru/ | Ford Tractor] |
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[http://ford_thunderbi.chat.ru/ | Ford Thunderbi] |
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[http://ford_rangers_f.chat.ru/ | Ford Rangers F] |
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'''Q: Is it safe for my health?''' |
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[http://ford_ranger_repa.chat.ru/ | Ford Ranger Repa] |
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[http://ford_probe_raced.chat.ru/ | Ford Probe Raced] |
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'''A:''' [[WaveLAN]] operates at 0.25 watts in a bursty mode (i.e. only when data is actually transmitted). Cellular phones go up to 3 watts and microwave ovens leak even more - and they are generally considered 'safe enough'. |
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[http://ford_probe_fo.chat.ru/ | Ford Probe Fo] |
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[http://ford_pickup_tr.chat.ru/ | Ford Pickup Tr] |
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All devices on the US market are approved by the FCC, which has a good public document on [http://www.fcc.gov/oet/rfsafety/ RF Safety]. |
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[http://ford_part_restor.chat.ru/ | Ford Part Restor] |
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[http://ford_part_onl.chat.ru/ | Ford Part Onl] |
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[http://ford_new_hol.chat.ru/ | Ford New Hol] |
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'''Q: What is the vision?''' |
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[http://ford_mustang_par.chat.ru/ | Ford Mustang Par] |
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[http://ford_mustang_for.chat.ru/ | Ford Mustang For] |
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'''A:''' This is a research project. Researchers often take a simple good idea and push it to its logical extreme. From this they learn a lot and finally understand what's possible and what is not. Then, taking one step back from the extreme approach, real good practical systems can be built. Here is our extreme story: |
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[http://ford_mustang_cl.chat.ru/ | Ford Mustang Cl] |
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[http://ford_mustan.chat.ru/ | Ford Mustan] |
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Traditional communication networks are owned by operators; i.e. companies who invest money into the deployment of cables and devices, and who operate and maintain those resources in order to offer services to users. To recover their investments (and to make some profit) they charge their customers. |
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[http://ford_motor_recal.chat.ru/ | Ford Motor Recal] |
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[http://ford_motor_comp.chat.ru/ | Ford Motor Comp] |
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This may change: Falling hardware prices combined with ever increasing functionality may make it feasible to outsource the function of an operator (company) to the service users. The software that normally runs on operator-owned computers may be split into components that are executed at end-user owned equipment (such as computers, access points or mobile phones). Cables may be replaced by wireless links - which are even free if operated in an unlicensed frequency spectrum, such as 2.4GHz or 5GHz . |
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[http://ford_motor_co.chat.ru/ | Ford Motor Co] |
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[http://ford_model_part.chat.ru/ | Ford Model Part] |
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Easy? Not so fast! There is still a lot of plumbing and configuration necessary to build and run a reliable network - just that it has to happen automatically now. And, in the event that something goes wrong, the system has to be able to automatically recover from ANY failure by itself - there is no operator to help. ... and this is exactly where our research comes into play. We want to see how far the idea of 'outsourcing the network operator to the end-user' can go with today's technology. If we are successful, those community owned networks may become a vital component in making Internet communication accessible to more people, for little or no money. |
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[http://ford_m.chat.ru/ | Ford M] |
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[http://ford_health_henr.chat.ru/ | Ford Health Henr] |
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Is this the death of telephone operator companies? By no way! Certain people and businesses will always require high quality communication services - and they are willing to pay for that extra quality. Those services will continue to be provided by commercial operators - at least for now :-) |
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[http://ford_gt_picture.chat.ru/ | Ford Gt Picture] |
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[http://ford_focus_r.chat.ru/ | Ford Focus R] |
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==Further Information== |
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[http://ford_falcon_part.chat.ru/ | Ford Falcon Part] |
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[http://ford_falcon_for.chat.ru/ | Ford Falcon For] |
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Technical Papers: |
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[http://ford_factory_par.chat.ru/ | Ford Factory Par] |
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[http://ford_f250_diesel.chat.ru/ | Ford F250 Diesel] |
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* [[Programming the Linksys WRT54GS Wireless Broadband Router]] (Tutorial) |
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[http://ford_f150_truck.chat.ru/ | Ford F150 Truck] |
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* [[:Image:WiMax-LOS.pdf|WiMax's technology for LOS and NLOS environments]] (pdf) |
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[http://ford_f150_sacra.chat.ru/ | Ford F150 Sacra] |
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* [[Using StandardizedDevelopmentEnvironment|Using Standardized Development Environment for OpenWRT]] (Tutorial) |
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[http://ford_f_150_pictu.chat.ru/ | Ford F 150 Pictu] |
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* [[Upgrading the Linksys WRT54GS antenna]] |
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[http://ford_explorer_r.chat.ru/ | Ford Explorer R] |
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* [[Hacking the Netgear wgt634u]] |
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[http://ford_escort_z.chat.ru/ | Ford Escort Z] |
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[http://ford_escort_bo.chat.ru/ | Ford Escort Bo] |
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[http://ford_escape_p.chat.ru/ | Ford Escape P] |
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General Press: |
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[http://ford_dealer_was.chat.ru/ | Ford Dealer Was] |
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[http://ford_dealer_st.chat.ru/ | Ford Dealer St] |
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* [http://news.zdnet.co.uk/communications/wireless/0,39020348,39189953,00.htm Intel has unveiled proposal for 802.11s, a new mesh wireless networking standard]. ZDNet UK, Mach 2005 ([[:Image:802_11s.pdf|cached pdf]]) |
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[http://ford_dealer_pa.chat.ru/ | Ford Dealer Pa] |
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* [http://www.spiegel.de/netzwelt/technologie/0,1518,344668,00.html Utopien aus Sauerkrautdosen]. Spiegel (German), March 2005. ([[:Image:UtopienAusSauerkrautdosen.pdf|cached pdf]]) |
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[http://ford_dealer_okla.chat.ru/ | Ford Dealer Okla] |
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* [http://www.spiegel.de/netzwelt/netzkultur/0,1518,344502,00.html Breitband zwischen Deich und Düne]. Spiegel (German), March 2005. ([[:Image:BreitbandZwischenDeichUndDüne.pdf|cached pdf]]) |
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[http://ford_dealer_nas.chat.ru/ | Ford Dealer Nas] |
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[http://ford_dealer_illi.chat.ru/ | Ford Dealer Illi] |
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[http://ford_dealer_fo.chat.ru/ | Ford Dealer Fo] |
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Similar projects in other cities: |
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[http://ford_dealer_denv.chat.ru/ | Ford Dealer Denv] |
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[http://ford_dealer_b.chat.ru/ | Ford Dealer B] |
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[http://ford_deale.chat.ru/ | Ford Deale] |
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[http://ford_credit_com.chat.ru/ | Ford Credit Com] |
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[http://ford_credit_card.chat.ru/ | Ford Credit Card] |
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* [http://www.seattlewireless.net/ Seattle Wireless] |
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[http://ford_contour_svt.chat.ru/ | Ford Contour Svt] |
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* http://wavelan-berlin.de -- Freies Netz in Berlin |
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* http://freifunk.net -- Freie (Wlan)Netze in Dtl., Österreich und der Schweiz |
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* [http://www.wlanhain.de/technik1.html WlanHain (Wireless LAN in Berlin Friedrichshain)] |
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Related Projects: |
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* [[ClickModularRouter|Click Modular Router]] |
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Other: |
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* [[BrnHistory|Berlin Roof Net History]] |
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Revision as of 13:31, 29 July 2005
| Willa Ford Mp3 | Used Ford Truck | Used Ford Rang | Used Ford Auto | Texas Ford Dea | Texas Ford Deale | Senator John | Remanufactured F | Q1997 Ford Explo | Q1997 Ford Esc | Q1996 Exporer | Problem With For | Picture Of Henry | Old Ford Truck | Northern Califor | New Ford Truck | Model A Ford | Melissa Ford Pho | John Ford Tennes | John Bleakley Fo | Indiana Ford Dea | Henry Ford Mus | Henry Ford Hos | Ford Focus Svt | Ford Explor | Ford Conversion | Ford Commercial | Ford Body Part | Ford Amphitheat | Ford Windstar Pa | Ford Truck Sea | Ford Truck Recal | Ford Truck Per | Ford Tractor | Ford Thunderbi | Ford Rangers F | Ford Ranger Repa | Ford Probe Raced | Ford Probe Fo | Ford Pickup Tr | Ford Part Restor | Ford Part Onl | Ford New Hol | Ford Mustang Par | Ford Mustang For | Ford Mustang Cl | Ford Mustan | Ford Motor Recal | Ford Motor Comp | Ford Motor Co | Ford Model Part | Ford M | Ford Health Henr | Ford Gt Picture | Ford Focus R | Ford Falcon Part | Ford Falcon For | Ford Factory Par | Ford F250 Diesel | Ford F150 Truck | Ford F150 Sacra | Ford F 150 Pictu | Ford Explorer R | Ford Escort Z | Ford Escort Bo | Ford Escape P | Ford Dealer Was | Ford Dealer St | Ford Dealer Pa | Ford Dealer Okla | Ford Dealer Nas | Ford Dealer Illi | Ford Dealer Fo | Ford Dealer Denv | Ford Dealer B | Ford Deale | Ford Credit Com | Ford Credit Card | Ford Contour Svt