Transmission technology William Kemp

Infrared Infrared data travels in shorter (near infrared waves). These waves enable data to be sent and receive between two devices at any one time, the need to infrared was to reduce wires in the modern world, however it’s limitation of a small area wasn’t enough. So infrared was implanted mainly has remote controls E.G. TV remotes.

Bluetooth Bluetooth was a replacement for infrared communication. It was designed to be inexpensive and secure and has a wide use for it’s success, most phones, PDA’s and other similar communication devices has Bluetooth as standard.

GPRS GPRS stands for General Packet Radio Service and is a protocol for mobile phone networks; it was made to replace the old dial-up network for mobile phones. It enables quicker connectivity and more accurate reading for how much internet you use because you only pay for by how much data you transfer. Because of this revelation it’s known as the fast network known as 3G.

GSM GSM stands for global system for mobile communication, it is the most popular and widely used network around the world with 118 countries using it and over 2 billion users. GSM basically digitizes the data and sends it down a channel at either 900MHz or 1800MHz making it faster then any mobile phone network available.

WIFI (wireless fidelity) Wireless fidelity (known as WIFI) is one of the most commonly used wireless networks around the world because of it’s characterises. It can penetrate walls and other objects in the way, it has a large connectivity area and its large compatibility. Most computer, video consoles, mobile phones and most other communication devices have built-in WIFI cards enabling them to connect to any unsecured wireless network.

2.5G. This generation was only a stepping stone to 3G it was more of a bridge to 3G and wasn’t officially released.

3G This generation brought greater network capabilities E.G. such as faster network speeds, greater bandwidth and other advanced network services, it enables surfing the internet quicker, streaming videos and audio much smother and quicker meaning less waiting time, the most known 3G phone is the 3G I Phone which incorporated all of the advantages of the 3G technologies and quickly became popular.

Data transfer rates Data transfers rates are simply how quickly data can be transfer from one device to another.

Effective range Effective range is how effective devices are at range. E.G. Bluetooth can be effective up to about 100M, inferred is effective up to about 5M.