Wireless Communications (3)

Wireless Communications (3)

Wireless Communications

Advantages of wireless communication:

Wireless communication has the following advantages:

i. Communication has enhanced to convey the information quickly to

 the consumers.

ii.Working professionals can work and access Internet anywhere and  

 anytime without carrying cables or wires wherever they go. This

also helps to complete the work anywhere on time and improves

 the productivity.

iii. Doctors, workers and other professionals working in remote areas

can be in touch with medical centres through wireless communication.

iv.Urgent situation can be alerted through wireless communication.

The affected regions can be provided help and support with the

help of these alerts through wireless communication.

v.Wireless networks are cheaper to install and maintain.

Disadvantages of wireless communication:

The growth of wireless network has enabled us to use personal devices anywhere and anytime. This has helped mankind to improve in every field of life but this has led many threats as well.

Wireless network has led to many security threats to mankind. It is very easy for the hackers to grab the wireless signals that are spread in the air.

 It is very important to secure the wireless network so that the information cannot be exploited by the unauthorized users. This also increases the risk to lose information. Strong security protocols must be created to secure the wireless signals like WPA and WPA2. Another way to secure the wireless network is to have wireless intrusion prevention system.

Applications of wireless technologies:

ü Mobile telephones

One of the best-known examples of wireless technology is the mobile phone, also known as a cellular phone, with more than 4.6 billion mobile cellular subscriptions worldwide as of the end of 2010. These wireless phones use radio waves to enable their users to make phone calls from many locations worldwide. They can be used within range of the mobile telephone site used to house the equipment required to transmit and receive the radio signals from these instruments.

ü Wireless data communications

      Wireless data communications are an essential component of mobile computing. The various available technologies differ in local availability, coverage range and performance, and in some circumstances, users must be able to employ multiple connection types and switch between them. To simplify the experience for the user, connection manager software can be used, or a mobile VPN deployed to handle the multiple connections as a secure, single virtual network. Supporting technologies include:

o   Wi-Fi

o   Cellular data service

o   Mobile Satellite Communications

ü Wireless energy transfer

Wireless energy transfer is a process whereby electrical energy is transmitted from a power source to an electrical load that does not have a built-in power source, without the use of interconnecting wires.

ü Computer interface devices

Answering the call of customers frustrated with cord clutter, many manufacturers of computer peripherals turned to wireless technology to satisfy their consumer base Originally these units used bulky, highly limited transceivers to mediate between a computer and a keyboard and mouse; however, more recent generations have used small, high-quality devices, some even incorporating Bluetooth. These systems have become so ubiquitous that some users have begun complaining about a lack of wired peripherals. Wireless devices tend to have a slightly slower response time than their wired counterparts; however, the gap is decreasing.

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