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S.R.LUTHARA INSTITUTE OF
MANAGEMENT
ASSIGNMENT
OF
MANAGEMENT INFORMATION SYSTEM
ON
WIRELESS TECHNOLOGIES:- WIFI &
BLUETOOTH
SUBMITTED TO:
ESHA PANDYA
SUBMITTED BY:
SALAHUDDIN SAIYED(31)
JITHIN PONATHIL (35)
GROUP NO:- 8
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INDEX
1. Wireless
Technologies.............................
...3
2. Wifi..
..4-82.1.wifi
.4
2.2.History
.4
2.3.Uses.
.5
2.4.Advantages
....7
2.5.Disadvantages..8
3. Bluetooth
...9-123.1.Bluetooth
.9
3.2.History
..9
3.3.List of application
..10
3.4.Advantages
.11
3.5.Disadvantages
..12
4. Bluetooth VS
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Wifi.....13
5. Bibliography
..14
WIRELESS TEC H NOLOGIES
Wireless is a term used to describe telecommunications in which electromagnetic waves
(rather than some form of wire) carry the signal over part or all of the communication path.
Some monitoring devices, such as intrusion alarms, employ acoustic waves at frequencies
above the range of human hearing; these are also sometimes classified as wireless. In simple
words transformation of data without any wire.
The first wireless transmitters went on the air in the early 20th century using radiotelegraphy
(Morse code). Later, as modulation made it possible to transmit voices and music via
wireless, the medium came to be called "radio." With the advent of television, fax, datacommunication, and the effective use of a larger portion of the spectrum, the term "wireless"
has been resurrected.
Common examples of wireless equipment in use today include:
Cellularphones and pagers -- provide connectivity for portable and mobile applications,
both personal and business
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Global Positioning System (GPS) -- allows drivers of cars and trucks, captains of boats
and ships, and pilots of aircraft to ascertain their location anywhere on earth
Cordless computer peripherals -- the cordless mouse is a common example; keyboards
and printers can also be linked to a computer via wireless
Cordless telephone sets -- these are limited-range devices, not to be confused with cell
phones
Home-entertainment-system control boxes -- the VCR control and the TV channel
control are the most common examples;
Wifi
Bluetooth
WIFI
Wi-Fi is a mechanism that allows electronic devices to exchange data wirelessly over
a computer network. A device enabled with Wi-Fi, such as a personal computer, video game
console, smartphone, tablet, or digital audio player, can connect to a network resource such
as the Internet via a wireless networkaccess point. An access point (orhotspot) has a range
of about 20 meters (65 ft) indoors and a greater range outdoors. Hotspot coverage can
comprise an area as small as a single room with walls that block radio signals or a large area,
as much as many square miles, covered by multiple overlapping access points.
"Wi-Fi" is a trademarkof the Wi-Fi Alliance and the brand name for products using the IEEE802.11 family of standards. Only Wi-Fi products that complete Wi-Fi
Alliance interoperabilitycertification testing successfully may use the "Wi-Fi CERTIFIED"
designation and trademark.
Wi-Fi has had a checkered security history. Its earliest encryption system, WEP, proved easy
to break. Much higher quality protocols, WPA and WPA2, were added later. However, an
optional feature added in 2007, called Wi-Fi Protected Setup (WPS), has a flaw that allows a
remote attacker to recover the router's WPA or WPA2 password in a few hours on most
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http://searchmobilecomputing.techtarget.com/definition/Global-Positioning-Systemhttp://whatis.techtarget.com/definition/0,,sid9_gci211843,00.htmlhttp://en.wikipedia.org/wiki/Computer_networkhttp://en.wikipedia.org/wiki/Smartphonehttp://en.wikipedia.org/wiki/Tablet_computerhttp://en.wikipedia.org/wiki/Internethttp://en.wikipedia.org/wiki/Wireless_networkhttp://en.wikipedia.org/wiki/Wireless_access_pointhttp://en.wikipedia.org/wiki/Hotspot_(Wi-Fi)http://en.wikipedia.org/wiki/Trademarkhttp://en.wikipedia.org/wiki/Wi-Fi_Alliancehttp://en.wikipedia.org/wiki/IEEE_802.11http://en.wikipedia.org/wiki/IEEE_802.11http://en.wikipedia.org/wiki/Interoperabilityhttp://en.wikipedia.org/wiki/Wi-Fi_Protected_Setuphttp://searchmobilecomputing.techtarget.com/definition/Global-Positioning-Systemhttp://whatis.techtarget.com/definition/0,,sid9_gci211843,00.htmlhttp://en.wikipedia.org/wiki/Computer_networkhttp://en.wikipedia.org/wiki/Smartphonehttp://en.wikipedia.org/wiki/Tablet_computerhttp://en.wikipedia.org/wiki/Internethttp://en.wikipedia.org/wiki/Wireless_networkhttp://en.wikipedia.org/wiki/Wireless_access_pointhttp://en.wikipedia.org/wiki/Hotspot_(Wi-Fi)http://en.wikipedia.org/wiki/Trademarkhttp://en.wikipedia.org/wiki/Wi-Fi_Alliancehttp://en.wikipedia.org/wiki/IEEE_802.11http://en.wikipedia.org/wiki/IEEE_802.11http://en.wikipedia.org/wiki/Interoperabilityhttp://en.wikipedia.org/wiki/Wi-Fi_Protected_Setup8/3/2019 Nw Wireless
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implementations.[1]Some manufacturers have recommended turning off the WPS feature. The
Wi-Fi Alliance has since updated its test plan and certification program to ensure all newly-
certified devices resist brute-force AP PIN attacks.
HISTORY
802.11 technology has its origins in a 1985 ruling by the US Federal Communications
Commission that released the ISM band for unlicensed use. In 1991 NCR
Corporation with AT&T invented the precursor to 802.11 intended for use in cashier systems.
The first wireless products were under the name WaveLAN.
Vic Hayes has been called the "father of Wi-Fi". He was involved in designing the initial
standards within the IEEE.
In 1992 and 1996, Australian organisation the CSIRO obtained patents for a method later
used in Wi-Fi to "unsmear" the signal. In April 2009, 14 tech companies agreed to pay
CSIRO for infringements on the CSIRO patents. This lead to WiFi being attributed as
anAustralian invention.
In 1999, the Wi-Fi Alliance was formed as a trade association to hold the Wi-Fi trademark
under which most products are sold.
USES
To connect to a Wi-Fi LAN, a computer has to be equipped with a wireless network interface
controller. The combination of computer and interface controller is called a station. All
stations share a single radio frequency communication channel. Transmissions on this
channel are received by all stations within range. The hardware does not signal the user that
the transmission was delivered and is therefore called abest-effort delivery mechanism. A
carrier wave is used to transmit the data in packets, referred to as "Ethernet frames". Each
station is constantly tuned in on the radio frequency communication channel to pick up
available transmissions.
1) Internet access
A Wi-Fi-enabled device can connect to the Internet when within range of a wireless
networkconnected to the Internet. The coverage of one or more (interconnected) access
pointscalled hotspotscomprises an area as small as a few rooms or as large as many
square miles. Coverage in the larger area may depend on a group of access points with
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overlapping coverage. Outdoor public Wi-Fi technology has been used successfully
in wireless mesh networks in London, UK.
Wi-Fi provides service in private homes, high street chains and independent businesses, as
well as in public spaces at Wi-Fi hotspots set up either free-of-charge or commercially.Organizations andbusinesses, such as airports, hotels, and restaurants, often provide free-use
hotspots to attract customers. Enthusiasts or authorities who wish to provide services or even
to promote business in selected areas sometimes provide free Wi-Fi access.
Routers that incorporate a digital subscriber line modem or a cable modem and a Wi-Fi
access point, often set up in homes and other buildings, provide Internet access
and internetworking to all devices tuned into them, wirelessly or via cable. With the
emergence ofMiFi andWiBro (a portable Wi-Fi router) people can easily create their own
Wi-Fi hotspots that connect to Internet via cellular networks.Now Android,Bada,iOS (iPhone), and Symbian devices can create wireless connections.
One can also connect Wi-Fi devices in ad-hoc mode for client-to-client connections without a
router. Wi-Fi also connects places that normally don't have network access, such as kitchens
and garden sheds.
2) City-wide Wi-FiIn the early 2000s, many cities around the world announced plans to construct city-wide Wi-
Fi networks. There are many successful examples; in 2005 Sunnyvale, California, became the
first city in the United States to offer city-wide free Wi-Fi, ] and Minneapolis has generated
$1.2 million in profit annually forits provider.
In 2004, Mysore became India's first Wi-fi-enabled city and second in the world after
Jerusalem. A company called WiFiyNet has set up hotspots in Mysore, covering the complete
city and a few nearby villages.
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In May 2010, London, UK, Mayor Boris Johnson pledged to have London-wide Wi-Fi by
2012. Several boroughs including Westminster and Islington already have extensive outdoor
Wi-Fi coverage.
3) Campus-wide Wi-Fi
Many traditional college campuses provide at least partial wireless Wi-Fi Internet
coverage. Carnegie Mellon University built the first campus-wide wireless Internet network,
called Wireless Andrew at its Pittsburgh campus in 1993 before Wi-Fi branding originated.
In 2000, Drexel University in Philadelphia became the United States's first major university
to offer completely wireless Internet access across its entire campus.
4) Direct computer-to-computer communications
Wi-Fi also allows communications directly from one computer to another without an access
point intermediary. This is calledad hoc Wi-Fi transmission. This wireless ad hoc
networkmode has proven popular with multiplayerhandheld game consoles, such as
theNintendo DS,digital cameras, and otherconsumer electronics devices.
Similarly, the Wi-Fi Alliance promotes a specification called Wi-Fi Directfor file transfers
and media sharing through a new discovery- and security-methodology. Wi-Fi Direct
launched in October 2010.
Some devices can also share their Internet connection using ad-hoc, becoming hotspots or
"virtual routers".
Advantages & Disadvantages of Bluetooth
Advantage
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The popularity of wireless LANs is a due to their convenience, cost efficiency, and ease of
integration with other networks and network components. The majority of computers sold to
consumers today come pre-equipped with all necessary wireless LAN technology.
Convenience The wireless nature of such networks allows users to access network
resources from nearly any convenient location within their primary networking environment(a home or office). With the increasing saturation of laptop-style computers, this is
particularly relevant.
Mobility With the emergence of public wireless networks, users can access the internet
even outside their normal work environment. Most chain coffee shops, for example, offer
their customers a wireless connection to the internet at little or no cost.
Productivity Users connected to a wireless network can maintain a nearly constant
affiliation with their desired network as they move from place to place. For a business, this
implies that an employee can potentially be more productive as his or her work can beaccomplished from any convenient location.
Deployment Initial setup of an infrastructure-based wireless network requires little more
than a single access point. Wired networks, on the other hand, have the additional cost and
complexity of actual physical cables being run to numerous locations (which can even be
impossible for hard-to-reach locations within a building).
Expandability Wireless networks can serve a suddenly-increased number of clients with
the existing equipment. In a wired network, additional clients would require additional
wiring.
Cost Wireless networking hardware is at worst a modest increase from wired counterparts.
This potentially increased cost is almost always more than outweighed by the savings in cost
and labor associated to running physical cables.
Disadvantages
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For a given networking situation, wireless LANs may not be desirable for a number of
reasons. Most of these have to do with the inherent limitations of the technology.
Security To combat this consideration, wireless networks may choose to utilize some of the
various encryption technologies available. Some of the more commonly utilized encryption
methods, however, are known to have weaknesses that a dedicated adversary cancompromise.
Range The typical range of a common 802.11g network with standard equipment is on the
order of tens of meters. While sufficient for a typical home, it will be insufficient in a larger
structure. To obtain additional range, repeaters or additional access points will have to be
purchased. Costs for these items can add up quickly.
Reliability Like any radio frequency transmission, wireless networking signals are subject
to a wide variety of interference, as well as complex propagation effects that are beyond the
control of the network administrator.
Speed The speed on most wireless networks (typically 1-54 Mbps) is far slower than even
the slowest common wired networks (100Mbps up to several Gbps). However, in specialized
environments, wired network might be necessary.
.
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BLUETOOTH
Bluetooth is a proprietaryopen wireless technology standard for exchanging data over short
distances from fixed and mobile devices, creatingpersonal area networks (PANs) with high
levels of security. Created by telecoms vendorEricsson in 1994, it was originally conceived
as a wireless alternative to RS-232data cables. It can connect several devices, overcoming
problems of synchronization.
Bluetooth is managed by the Bluetooth Special Interest Group (SIG), which has more than
15,000 member companies in the areas of telecommunication, computing, networking, and
consumer electronics. The SIG oversees the development of the specification, manages the
qualification program, and protects the trademarks. To be marketed as a Bluetooth device, it
must be qualified to standards defined by the SIG. A network of patents is required to
implement the technologyand are only licensed to those qualifying devices; thus the protocol,
whilst open, may be regarded as proprietary
Bluetooth Technology Over the Years
1998 - Bluetooth technology is officially introduced and the Bluetooth SIG is formed.
Bluetooth technology's intended basic purpose is to be a wire replacement technology in
order to rapidly transfer voice and data.
1999 - Bluetooth 1.0 Specification is introduced.
2003 - The Bluetooth SIG overhauls the Bluetooth Core Specification with the announcement
of Version 2.1.
2004 - Bluetooth Version 2.0 + EDR (Enhanced Data Rate) is introduced.
2005 - Devices using Version 2.0 + EDR begin to hit the market in late 2005.
2007 - Bluetooth Core Specification Version 2.1 + EDR is adopted by the Bluetooth SIG.
2009 - Bluetooth Core Specification Version 3.0 + HS (High Speed) is adopted by the
Bluetooth SIG.
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List of applications
A typical Bluetooth mobile phoneheadset.
Wireless control of and communication between a mobile phone and a handsfreeheadset.This was one of the earliest applications to become popular.
Wireless control of and communication between a mobile phone and a Bluetooth
compatible car stereo system
Wireless Bluetooth headset and Intercom.
Wireless networking between PCs in a confined space and where little bandwidth is
required.
Wireless communication with PC input and output devices, the most common beingthemouse, keyboard and printer.
Transfer of files, contact details, calendar appointments, and reminders between devices
with OBEX.
Replacement of previous wired RS-232 serial communications in test equipment, GPS
receivers, medical equipment, bar code scanners, and traffic control devices.
For controls where infrared was often used.
For low bandwidth applications where higherUSBbandwidth is not required and cable-free connection desired.
Sending small advertisements from Bluetooth-enabled advertising hoardings to other,
discoverable, Bluetooth devices.
Wireless bridge between two Industrial Ethernet (e.g., PROFINET) networks.
Three seventh-generation game consoles, Nintendo's Wii and Sony's PlayStation
3 and PSP Go, use Bluetooth for their respective wireless controllers.
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Dial-up internet access on personal computers or PDAs using a data-capable mobile
phone as a wireless modem.
Short range transmission of health sensor data from medical devices to mobile
phone, set-top box or dedicated telehealth devices. Allowing a DECT phone to ring and answer calls on behalf of a nearby cell phone
Real-time location systems (RTLS), are used to track and identify the location of objects
in real-time using Nodes or tags attached to, or embedded in the objects tracked, and
Readers that receive and process the wireless signals from these tags to determine their
locations
Personal security application on mobile phones for prevention of theft or loss of items.
The protected item has a Bluetooth marker (e.g. a tag) that is in constant communication
with the phone. If the connection is broken (the marker is out of range of the phone) then
an alarm is raised. This can also be used as a man overboard alarm. A product using this
technology has been available since 2009.
Advantages & Disadvantages of Bluetooth
While using the Bluetooth feature, you can run through a lot of advantages to and at the same
time and run to a lot of disadvantages also. With about every great technology, there has to be
something in there that makes it not perfect. There's probably no such thing of a perfect
product. A few advantages and disadvantages of Bluetooth includes the following.
Advantages:
Widely Used: Bluetooth is now really popular and keeps getting more popular as time passes
by. It is now widely used across countries and almost by everyone. Companies are taking the
benefit by using this in their new and future products to make life much easier for everyone.
Pretty much very soon, you will be noticing quite a bit of technology will be wireless due to
Bluetooth. As it is already, but most likely it will be more dominant. You can use Bluetooth
on laptops, cell phones, music players, headsets, printers and a lot more other products.
Feature Simplicity: You do not need to know much about technology in order to run
Bluetooth. Anyone that doesn't have no knowledge about the new technology can still be able
to use the Bluetooth feature due to its simplicity and the ease of use. I think that the
simplicity of it and the fact that it's wire free makes it very widely used and utmost popular.
Free of Charge: Best of all, you do not have to pay a penny for the service! It's not an extra
cell phone or cable bill that you have to add to your budget. Simply by the technology and
you're done! All you need to do is connect it with what you are using. There hasn't been any
reporting lately on companies charging a monthly fee or any fee for people to use the
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Bluetooth feature and I don't expect it.
Go Wireless!: It allows you to stay cord free and do not have to worry about finding the
correct place to connect that extra long cord. Avoid having to have a ton of cords wherever
you go. You may still need a few cords but not as much as you would without Bluetooth.
You can also go to the internet wirelessly with this feature when you're out somewhereoutside of yourhome.
Your in Control: Even though you are able to exchange data across your cell phones, you
still have the ability to keep your information private. In order to make a transfer or allow
someone to access the files on your phone, you will have to give them access by accepting or
rejecting the request through your phone. If you have the Bluetooth feature enabled on your
phone and not disabled while using it, others that you may not even know request to send you
a file.
Disadvantages:
Battery Use: This occurs mostly on your cell phone but also occurs in other technology such
as music players. You're using up more battery power when you leave your Bluetooth
enabled on your phone all day. To disregard all this, the best thing that you can possibly do is
disable it once you are completed with the transfer. It only takes a few seconds to enable and
disable so it wouldn't hurt to disable it once you are done using it.
Bluetooth Internet: Throughout all devices, when using Bluetooth internet, the connection
can sometimes run very slow so Bluetooth internet is not highly suggested for all cases.
As you can notice that there are quite a bit of advantages and fewer disadvantages. Overall,
Bluetooth is a great thing to be using on all your devices that supports it. You can do so much
with it and includes cutting all the cords attached to your devices.
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Bluetooth vs. Wi-Fi (IEEE 802.11)
Bluetooth and Wi-Fi (the brand name for products using IEEE 802.11 standards) have some
similar applications: setting up networks, printing, or transferring files. Wi-Fi is intended as a
replacement for cabling for general local area networkaccess in work areas. This category of
applications is sometimes called wireless local area networks (WLAN). Bluetooth was
intended for portable equipment and its applications. The category of applications is outlined
as the wirelesspersonal area network(WPAN). Bluetooth is a replacement for cabling in a
variety of personally carried applications in any setting and can also support fixed location
applications such as smart energy functionality in the home (thermostats, etc.).
Wi-Fi is a wireless version of a common wired Ethernet network, and requires configurationto set up shared resources, transmit files, and to set up audio links (for example, headsets and
hands-free devices). Wi-Fi uses the same radio frequencies as Bluetooth, but with higher
power, resulting in higher bit rates and better range from the base station. The nearest
equivalents in Bluetooth are the DUN profile, which allows devices to act as modem
interfaces, and the PAN profile, which allows for ad-hoc networking
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http://en.wikipedia.org/wiki/Wi-Fihttp://en.wikipedia.org/wiki/IEEE_802.11http://en.wikipedia.org/wiki/Local_area_networkhttp://en.wikipedia.org/wiki/Wireless_local_area_networkhttp://en.wikipedia.org/wiki/Personal_area_networkhttp://en.wikipedia.org/wiki/Ethernethttp://en.wikipedia.org/wiki/Wi-Fihttp://en.wikipedia.org/wiki/IEEE_802.11http://en.wikipedia.org/wiki/Local_area_networkhttp://en.wikipedia.org/wiki/Wireless_local_area_networkhttp://en.wikipedia.org/wiki/Personal_area_networkhttp://en.wikipedia.org/wiki/Ethernet8/3/2019 Nw Wireless
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Bibliography
http://www.wifinotes.com/
http://www.articleclick.com
http://ipoint-tech.com/
http://www.bluetomorrow.com/
http://en.wikipedia.org/wiki/Bluetooth
http://en.wikipedia.org/wiki/Wi-Fi
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http://www.wifinotes.com/http://www.articleclick.com/http://ipoint-tech.com/http://www.bluetomorrow.com/http://en.wikipedia.org/wiki/Bluetoothhttp://en.wikipedia.org/wiki/Wi-Fihttp://www.wifinotes.com/http://www.articleclick.com/http://ipoint-tech.com/http://www.bluetomorrow.com/http://en.wikipedia.org/wiki/Bluetoothhttp://en.wikipedia.org/wiki/Wi-Fi