Mobile phones have changed the law of communication and in contrary to the most developed countries, India is fast emerging as the country with highest database. Gong by the industry reports, India is expected to touch a mobile subscriber base of 348 million by 2010 Mobiles aren’t the only one in demand electronic devices laptops, PDAs that make our lives wireless and communication free are reaping business.
India is advancing towards a wireless era. Communication is happening on the move, thanks to the technological advancement India has been able take in the field of wireless technology.
Wireless networking refers to the ability to connect computers and other devices without the use of wires. This is achieved using high frequent radio waves rather than wires to enable these devices to communicate with each other. Wireless networking products have become more popular in the last few years, due to increase in competition among manufacturers and the emergence of a more dominant wireless technology.
Advantages of wireless networking:
Moist of us have become accustomed to the limitations that come with a wired network. When we want to check our email or print a report, we find ourselves confined it a certain location or cramped space. In the past few years, the growing popularity of wireless communications has caught the attention of corporate manufacturing and the academic. Wireless network technology has proven that it can deliver the benefits of a wired network with the added benefits of computing freedom.
A wireless networking system has many advantages. One being that it can save you from trouble that you would have to face in a wired network due to cable problems. Secondly, it also saves time and money because the expenses of installing a lot of cables would be saved.
Wireless networking can prove to be very useful in public places i.e. libraries guest houses, hotels, cafeterias, schools etc. These are places where one might find wireless access to the internet. From a financial point of view, this is beneficial to both the provider and the client. The provider would offer the service for a charge probably on a pay per use system, and the client would be able to take advantage of this service in a convenient location i.e. away from office or home.
Types of Wireless Networks:
WLANS (Wireless Local Area Networks)
Allow users in a local area such as university/school/college campus or library to gain access to the internet.
WMANS (Wireless Metropolitan Area Networks)
This technology allows the connection of multiple networks in a metropolitan area such as different building/offices in a city.
WPANS (Wireless Personal Area Networks)
The two current technologies for wireless personal area networks are Infra Red and Bluetooth. These allow the connectivity of personal devices within an area of about 30 feet.
WWANS (Wireless Wide Area Networks)
These types of networks can be maintained over large areas, such as cities or countries, via multiple satellite systems or antenna sites that are looked after by an ISP.
The Concept of WLAN & WWAN:
WLAN (Wireless local Area network) enables client computers and the server to communicate with one another without direct cable connections. WLAN utilizes electromagnetic waves particularly spread spectrum technology based on radio waves to transfer information between deices in a limited area. There are two types of WLANs, infrastructure WLANs and independent WLANs. Infrastructure WLANs, where the wireless network is liked it a wired network is more commonly deployed today Wi-Fi which means Wirelss Fidelity refers certain kinds of WLANs (as opposed to LAN, or computers that are networked together with wires). Travelers with PDA’s (like Black berries) and other handheld devices or laptops with wireless cards can connect to the internet via Wi-Fi. Wi-Fi hotspots are places were you can find Wi-Fi free or paid. Many Airports hotels and cafes have Wi-Fi hotspots.
WWAN (Wireless Wide Area Network) is a technology that enables users to establish wireless connections over remote private or Public network using radio, satellite and mobile phone technologies instead of traditional cable networking solutions like telephone systems or cable modems. These connections can be maintained over large geographical areas, such as cities or countries through the use of satellite systems or multiple antenna sites maintained by wireless service providers.
A Career in this Field:
The best time for a student to pursue a career in this field is after 12th. Students who wish to pursue a career in this field must possess the required knowledge of basic networking concepts. They can then enroll themselves for various certificate courses in wireless networking which are being offered by renowned networking institutions in India. Students specializing in wireless networking need to have complete knowledge of Wi-Fi, Infrared, Buetooth, RFID (Radio frequency edtiication) WiMAX (World wide inter-operability for Microwave Access), VoWLAN (Voice over WLAN)& ZigBee.