Posts Tagged “wireless”
The WNDW team has released its second edition of the book "Wireless Networking in the Developing World". The 425 page book includes lots of new material, including new chapters on solar power and economic planning, several new case studies.
The book is released for free under a Creative Commons license and is available in several languages (including Spanish, French, Italian, and soon Arabic and Portuguese). and it is free to download, print, update, or redistribute it.
The Wireless Networking in the Developing World book is just one part of the WNDW project. Community forums, training workshops, and additional material are also available on their website, http://wndw.net/.
via : Lunch over IP
Tags: 2008, art, blog, book, community, develloping country, development, free, HP, ia, im, internet, King, lan, language, network, nomadcom.net, pda, power, project, release, Telecommunications, train, update, W NDW, web, website, wifi, wireless, world, wp, www
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TGV tests Wi-Fi + satellite link in three TGV trains on its Eastern network. If the experiment proves successful the new service should be generalized, from 2009, to all 52 oars network East.
With combines effort of satellite link and wireless network, in locations, such tunnels and train stations, where the satellite link cannot be established, the wi-fi network takes over to maintain the access to the Web without interruption.
French railways company SNCF previously conducted unsuccessful test using GPRS data network before launching a 2 years research and preparation program to implement this dual solution. Among technical difficulties to overcome are these related to 320 km/h TGV trains speed which causes instability and vibrations.
The project is done in a partnership with Orange(France Telecom mobile operator), Capgemini, Alstom Transport and Eutelsat.
SNCF will put on board of its TGV a dedicated Web portal providing information about destinations, weather forecast, News, traffic information as well as a real time tracking service. From a technical point of view, TGV trains are fitted with a server where all portal content is loaded prior the journey in order to minimize bandwidth consumption due to its high cost. The tested system has been designed to provide simultaneous web connection for 14 per cent (50 users) of the total capacity of each TGV train (350).
The business plan is not defined yet, but the widespread of the system on TGV Eastern Europe network would represent an investment of 120 millions USD over 4 years. First price estimation given by SNCF Passenger service would be a flat 4-5 USD to access the Web portal during the whole journey and a 4-5 USD per hour to access the Internet.
A very interesting project and definitively a real challenge to maintain permanent web connectivity during a train journey at more than 300 km/h where the 16'000 volt power line running over the train may also create some electro-magnetic interferences and without mentioning all micro interruptions of the satellite link each time the train pass under a bridge or when dense foliage is found within the satellite's line of sight.
Any reader who already had the chance to test the reliability of the service ?
More infos (in French): Journal du Net, CNet France.
Tags: 2007, access, arc, art, blog, bridge, capacity, ces, connection, connectivity, consumption, CTU, design, europe, forecast, ia, im, internet, internet access, King, lan, launch, location, mobile, Mobile Communications, mobility, network, nomadcom.net, power, project, reader, real time, reliability, satellite, search, sncf, telecom, tgv, traffic, train, user, web, wireless, wp, www, XP
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I found the article below on "The Register" site and asked myself the following question:
If connecting to Internet using an open and unsecured wifi access point is considered as a crime, why authorities do not apply the same principle to other services (mainly electricity and water) we often use without any formal agreement of the owner ?
" More than half of computer users have illegally stolen Wi-Fi connections, according to The Times – but only 11 alleged offenders have been arrested in the UK, as the police seem to think those deploying Wi-Fi should be more careful about securing their connections.
The data was collected from a "Have Your Say" survey on the website of security-specialist Sophos: apparently 54 per cent of the 560 people who responded admitted nicking bandwidth from insecure Wi-Fi routers.
This might say more about Sophos customers than the general population, and extrapolating the results to every computer user in the country is probably a crime against statistics: so that's exactly what The Times has done.
…
Anyone caught stealing a Wi-Fi connection can be fined up to a grand, even if it's left unsecured, so make sure you ask nicely next time you're looking to log on, and if the person next to you has never stolen a Wi-Fi connection then we have to assume that you have. "
What is your opinion about accessing open wifi ? Do you think it is a crime ?
Source: The Register
Tags: 2007, access, agreement, art, blog, ces, computer, connection, connections, crime, customer, electricity, enforcement, free, ia, im, internet, internet access, King, lan, law, list, MIT, nomadcom.net, police, population, security, services, statistics, survey, the register, thief, thieves, uk, user, water, web, website, what is, wifi, wireless, wp, www
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8th of November: World Usability Day "Make life easy"
Swiss UPA, the Swiss chapter of the Usability Professional Association proposes to ease access to free public wireless networks using a specific sign ((o)) that would help users to detect easy to use wireless networks.
Today, before getting online using a wireless device, users have first to find an user-friendly wireless access point and then try to connect to it.
The user has to detect which wireless networks are available from his location and check if they are public and free of charge. Often wireless network names do not inform the visitor if the access to the network is free or not. The wireless access point might not be protected but once connected users are redirected to a page where they will be invited to purchase access rights.
Swiss UPS also highlight the fact that once connected to a free and public wireless network, it is not uncommon to reach an authentication page before getting access to the Internet. This procedure has 2 main disadvantage:
- Some authentication pages cannot be completed when using a Smartphone or a PDA.
- Some services such email, Instant Messaging, VoIP, etc… do not require the use of a browser and users cannot pass easily through this authentication method.
To make users' life easier, Swiss UPS proposes to include at the beginning of the SSID (Service Set Identifier which broadcasts the name of the wireless network) of public and free wireless networks the following distinctive sign: ((0))
Usage of the sign ((o)) is free and open to all individuals, collectivities and organizations which operate a WiFi network respecting Swiss UPA usability charter.
More about Swiss UPA (in German), UPA International (English) and about World Usability Day
Source: Canard WiFi
Tags: 2007, access, art, blog, ces, ergonomic, find, free, ia, im, International, internet, IT World, lan, light, location, network, nomadcom.net, online, pda, phone, public, services, smartphone, swiss, swiss upa, Telecommunications, upa, USA, usability, usage, user, wifi, wireless, world, wp, www
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As mentionned on the 20th of October on this site, the City of Geneva and FON have officially announced a joint project to provide WiFi access to the city’s residents and visitors.
A website FON-Genève has been created and residents willing to share their Internet access are invited to complete the registration form to reserve their Fonera (the FON wireless access point) available soon for collection at the Geneva City Hall.
Geneva FON wireless access point : Live Map
Let's hope that Internet users will play the game and Geneva will become a real connected city and communes of the canton will soon follow.
Tags: 2007, access, art, blog, ces, community, europe, fon, fon geneve, fon movimiento, fonera, free, game, geneva, geneve, HP, ia, im, internet, internet access, IT World, lan, launch, live, map, Mobile Communications, network, nomadcom.net, project, share, suisse, switzerland, user, web, website, wifi, wireless, wp, www
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Free and universal Wi-Fi community builder "FON Movimiento" is spreading fast across Europe. In September an agreement was signed with Cegetel, France 2nd largest ISP to introduce the free "Neuf Wifi FON" service. This service offers Neuf Cegetel's subscribers to share some of their Internet bandwidth through their "Wifi Neuf Box" and to become part of the FON community. Cegetel estimates that by end of 2007, 1 million of "Neuf Box 4" will be ready to support this new service.
Members of the FON community get free and secured Internet access through any "FON Spots" Wifi Access Point around the globe.
Earlier this month in United Kingdom, BT also joined forces with FON and offer to 3 million BT's broadband customers to share their Internet access and join the FON community.
Now it is the Geneva city council to sign a convention with FON to consolidate the small existing wireless network available in some key locations of the city. The city council envisages to distribute up to 500 FON routers to its citizens who may wish to share their Internet Access via the FON community (complete story, in French, on TSR telecom blog).
Non-member of the FON community will be able to get access to the Internet through FON Wifi networks using a 3 USD/day fee "FON Access Pass".
Let's hope this solution will be more successful than previous attempts as most of them were sunk by politicians and endless administrative discussions.
" Post Tenebras Lux" ?
Tags: 2007, 24, access, agreement, art, ATT, blog, bt, ces, citizen, community, customer, europe, fon, fon movimiento, free, geneva, geneve, HP, ia, im, internet, internet access, King, lan, location, map, Mobile Communications, network, neuf cegetel, nomadcom.net, post, share, story, sun, telecom, Telecommunications, uk, wifi, wireless, world, worldwide, wp, www
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Geek generation ? If you are, ThinkGeek has all what you need. After the Equalizer and Pong t-shirt, among many others, one of their last creation is a t-shirt with a built-in 802.11b/g wireless detector.
When the detector is turned on, the glowing bars located in front if the t-shirt dynamically shows the strength of 802.11 wireless signal around you.
The detector is powered by 3 AAA batteries located in a small pocket sewed under the shirt.
Price tag: 30 US$
Tags: 2007, 802.11, ATT, batteries, blog, detector, geek, im, lan, nomadcom.net, power, t shirt, thinkgeek, wifi, wireless, wp, www
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The Sony A700 DSLR microsite was briefly available on Sony UK website earlier this week. Yesterday, Sony officially announced the A-700 in a press release.
New A-700 specs are the following :
- 12.4 megapixel CMOS sensor
- BIONZ image processor
- 11 point autofocus system
- ISO 6400
- 5fps (for 17 shots in RAW mode)
- 1/8000th shutter speed
- 3 inch LCD screen (with 921,000 pixels)
- Optional battery grip
- Wireless Flash support
- Both MemoryStick and CompactFlash cards supported
- Size: 142 x 105 x 80 mm
- Weight: 690g
- Price Tag: : 1400€ body only, 1500€ with lens 18-70mm, 2120€ with lens Zeiss 18-80 mm
3 new DT lenses will be available:
- 16-105mm F3.5-5.6
- 18-250mm F3.5-6.3
- 55-200mm f4-5.6
Availabilty : 16th of November in Japan
Sources : Photography Blog, Virus Photo. Check the A-700 Hands-on preview on DPreview
Additional pictures on Engadget site. More information later this week with the official Sony launch.
Tags: 2007, A700, api, ATT, blog, camera, card, ces, CTU, digital, DSLR, DSLR A700, flash, fon, gap, HP, ia, ict, im, iso, japan, lan, launch, memory, new release, nomadcom.net, pda, photo, Photography, picture, press, project, raw, release, review, screen, sony, space, uk, update, web, website, wireless, wp, www
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Whisher, a Spanish start-up, backed by Switzerland’s leading phone company, Swisscom, and the venture firm Benchmark Capital Europe is apparently very active for few month now. The principle of Whisher is that Wireless Access to the Internet should be free and accessible from everywhere which is basically the same concept than FON Movimiento, except that you don't need to purchase any specific hardware.
Whisher' users are requested to download an application through which they can share their wireless access (works also with WEP or WPA connections) with other Whisher members
The newly released version 2.0 beta of the software offers more than just storing and encrypting connections' passwords such:
- Wireless connection manager
- WiFi sharing
- Chat with other users connected on the same wireless access point.
- Multi Instant Messenger support (Yahoo, MSN, AIM, ICQ, GoogleTalk, Twitter, Jabber)
- File Transfer (with users sharing the same wireless AP)
- LAN Support
- GeoLocation
- Other Networks connections (access via commercial access; hotspot, etc..). FON is supported too.
- Around You. Gives you informations about coming events, restaurants around the wireless connection you are currently using.
New services that should be available soon :
- Voice Support
- Global File Sharing
Plateform supported : Windows XP, Linux, Mac O/S. Vista not available yet.
The software is still beta and some stability and registation problems have been reported. More information on their Blog
Tags: 2007, access, aim, api, art, blog, capital, ces, connection, connections, europe, event, fon, fon movimiento, free, global, google, HP, ia, icq, im, instant messenger, internet, lan, location, messenger, Mobile Communications, msn, network, nomadcom.net, password, phone, problems, release, sco, services, share, sharing, swiss, swisscom, switzerland, Telecommunications, twit, Twitter, user, vista, whisher, wifi, windows, wireless, wp, www, XP, yahoo
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A report from Burton Group suggests that new emerging standard of wireless network (WLAN / WiFi) 802.11n (Mimo) will start replacing wired Ethernet 802.3 networks within the next 2-3 years as it improves throughput and range compared to actual 802.11 b/g.
IT senior analyst Paul DeBasi goes even further and says "IT professionals should start thinking now about how they will deploy, maintain and benefit from an all-wireless LAN."
This is a joke isn't it ? Even if I'm a fervent of wireless technology, I simply cannot imagine how wireless networks will replace actual wired networks. Here are the main reasons:
- Bandwidth: With 802.11n the maximum theoretical throughput (using 2 steams) will be 248 Mbps meanwhile Ethernet 802.3an (2006) already provides 10Gbps and next IEEE study group target is 802.3ba with both 40 and 100Gbps. I don't even speak about signal attenuation releated to distance and obstacles.
- Frequency spectum 2.4 GHz & 5GHz are very narrow and number of available channels are limited. So maintaining high speed links, large number of clients without facing frequency overlaps and other electro-magnetic interferences seems very unlikely.
- Electro-smog: With 802.11n the range covered will be larger but this will have undoubtedly have a negative impact on performance and signal strength specially when using ISM 2.4 GHz spectrum in a wireless crowed environment.
- VoWLAN capacity: Several studies have been done to determine, how many simultaneous calls one AP can handle. The number of simultaneous calls is 15 before observed speech quality is lowered via increased delay. (I assume the study also get rid of telephone wires).
- A "wireless only" corporate office means that PBX system also have to rely on wireless network, otherwise it would be complete non-sense to pull wire only for telephone and use wireless connectivity for computers.
Is this report a hoax or do they, at the Burton Group, have some enlighten prophets?
Source: ZDNet Full report is available here (sign-in required)
Tags: 2007, 24, 802.11, art, ATT, blog, bt, capacity, ces, computer, computers, connectivity, CTU, delay, distance, ethernet, HP, ia, im, Impact, King, lan, light, MIT, network, nomadcom.net, phone, project, prophet, space, study, technology, Telecommunications, term, white paper, wifi, wireless, wlan, wp, www
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