Introduction to Wireless networks, WLAN, WiFi, WMAN & Wireless Technologies
Wireless networks fetch essential changes to data networking and makes integrated networks an authenticity. Wireless networks is offering a network having no wires because by using wireless network you can connect your computer to a network using radio waves and can move your computer anywhere easily. Wireless network has made a network extremely portable because of digital modulation, adaptive modulation, information compression, and access multiplexing.
In a wireless network you use air as a medium. Wireless networks introduced by IT Consulting group with IEEE certified 802.11b technology. Wireless networks providing you privacy and personal computer security more than before. A Wireless networks presenting flexibility, roaming, high standard and low cost. There are different types of wireless network such as wireless LAN, wireless MAN, and mobile devices network.
Wireless networks working at a highest bandwidth of 11Mbps and 802.11b can be implementing with various products. This technology focusing on frequency-hopping spread spectrum and direct-sequence spread spectrum which have two approaches. DSSS transmit information by divided into small pieces. It is also identified as a chipping code that transmits the data according to a spreading ratio. It is also helpful for signal resist interference and use can easily observe original data and recover damage data while HSS use the bandwidth to split into lots of probable broadcast frequencies. Its performance is generally enhanced and more consistent. There are lots of benefits or wireless networking such as very fast and reliable having long range from 1,000 ft / 305 m and 250 to 400 ft / 76 to 122 m .You can also integrate it into any existing wired-Ethernet networks. Wireless networks offering very high speed of internet and compatible with peer-to-peer mode.
There are different functional parts of a wireless networking such radios base stations and mobile networks are increasing trends for wireless industries. UWB and Bluetooth can be used as personal network. Wireless network now has been a Broadband wireless with great invention of Wi-Fi and WiMAX networks Wireless networks are competent of offering suppleness for an association. Wireless local area networks offer consistent and effectual keys to a number of instant applications therefore at present it is used under numerous diverse platforms such as developed, health care, education, finance, hospitality, airport, and retail.
Types of Wireless Networks
A wireless network joins two or more than two computers by means of communication without using any wires. Wireless Networks utilizes spread-spectrum or OFDM depends on the technology which is using .Wireless network enable a user to move about within a wide coverage area and still be associated to the network. There are different types of wireless networking such as wide area network, local area network and personal area network but the most common are of two.
WLAN (Wireless Local Area Network)
WLANs provide wireless network contact using radio signal instead of traditional network cabling and built by joining a device called AP through which a user converse with the AP using a wireless network. WLAN also network security because it relics an important issue for WLANs. The WEP technology used in WLAN elevate the rank of security. WLANs have expanded well-built status in a different kind of markets during the last seven years and set up to offer wireless connectivity within a limited exposure area which may be a hospital, a university, the airport, health care providers or a gas plant. WLAN is providing highest data-transfer rate with 802.11 terminologies. Today WLANs are fetching more usually recognized as a general-purpose connectivity substitute for a wide array of business customers. WLANs offering various benefit for user such as mobility, condensed Cost-of-Ownership, installation speed and flexibility and scalability. The technology used in WLANs is Spread Spectrum developed by the military offer secure and reliable services. Frequency-hopping spread-spectrum maintains a single logical channel and Direct-Sequence Spread Spectrum offer chip pattern to make it more effective and infrared technology. Wireless LAN adapters are necessary for regular computer platforms. The benefits of WLAN are high Range and coverage, Throughput, Mulitpath Effects, Integrity, Interoperability with Wired Infrastructure, Interoperability with Wireless Infrastructure, Interference and Coexistence, Simplicity and Ease of Use, Security, Cost, Scalability and , Safety which makes a wireless network in real a great platform.
WMAN (Wireless Metropolitan Area Network)
Fast communications of network within the vicinity of a metropolitan area is called WMAN, that put up an entire city or other related geographic area and can span up to 50km. WMAN designed for a larger geographical area than a LAN. The standard of MAN is DQDB which cover up to 30 miles with the speed of 34 Mbit/s to 155 Mbit/s.1t is more common in schools, colleges, and public services support a high-speed network backbone. WMAN is a certified name by the IEEE 802.16 that functioning on Broadband for its wireless metropolitan. WMAN have air interface and a single-carrier scheme intended to activate in the 10-66 GHz spectrum, supports incessantly unreliable transfer levels at many certified frequencies. WMAN opens the door for the creation and Provide high-speed Internet access to business subscribers. It can handle thousands of user stations with prevents collisions and support legacy voice systems, voice over IP, TCP/IP. WMAN offer different applications with different QoS requirements. The technology of WMAN consist of ATM, FDDI, and SMDS. WiMAX is a term used for Wireless metropolitan area network and plinth on the IEEE 802.16.
Wireless Networks usage
As we know that Wireless network is usually related with a telecommunications that works between nodes and executed without the use of wires. The usage of wireless networking increasing day by day because it has influenced significant impact on the world therefore its uses have appreciably grown-up.
- Radio frequency signals used in a wireless network therefore you can move about and get admittance to the network while you are working an outdoor location.
- Through Wireless Networks you can send information over the world using satellites and other signals.
- Now days wireless networks used in emergency services like police department where wireless network utilize to commune significant information speedily.
- The growth of wireless network increasing both in people and businesses to send and share data swiftly It doesn’t matter be in a small office or across the world.
- Another vital exercise for wireless networks is as a cheap and fast way to be linked to the Internet in regions especially where telecom transportation is meager and no source for communication.
- To make use of Wireless Networks you can get access to other network resources like Library Online System because to move your laptop anywhere is not enough difficult now. Wireless networks make easy of file sharing, the use of printer and other documents with high security.
Now the wireless network is in use every where such as hospital, organizations, universities, airports, health care departments, stores, any much more as wireless network make this world a global village in real.