Sunday 4 November 2012

4th Generation technology (4g)


4g is the name given to the forth generation of wireless technology, 4g is the successor to 3g and 2g networks of mobile technology, these networks are what allow your phone or computer to connect with each other and to the internet, phone calls, Emails, internet access and gps signals all use one of these networks, and 4g will be able to make these tasks as fast as its predecessors. G system provides mobile ultra-broadband Internet access.  Recently Android and Windows-enabled mobile phone have adopted 4g in order to keep up to date with current technology. According to IMT-A, 4G mobile devices must be IP-based and able to provide data speeds of up to 100 Megabits per second (Mbps) when the device is being used while moving and up to 1 Gigabit per second (Gbps) when stationary3G guarantees minimum speed of 144 KPS and up to 400 KPS, however in this modern society that is not fast enough. 4g should guarantee no buffering whilst watching videos and instant downloading of music and HD movies. Offcom says it will need to reach 98% of the population and 95% of the country by the end of 2017. 


This graph shows the performance increase between 3g and 4g technology in download and upload speeds.

There are many advantages over 3G, but there remains some minor disadvantages that could put some people off, these are:

Although the speed and just overall quality of web-based applications would improve, it would not occur without a fee. Most companies such as Sprint are trying to limit the fee as much as possible starting at a “ten dollars a month service fee to use the HTC Evo on a 4G network” (Hansen, 2010). This fee is not unusually high, but with a reduction in fee comes a cheap deployment of this technology which means that it is expected to disrupt broadband access alternatives such as DSL and cable modems. This is because it is cheaper to deploy and covers such a wide bandwidth in the network(Jarrett, 2006).
 Also, since people are being connected to a variety of devices while using 4G, each person needs to be aware of the security threats they are opposing on themselves. As mentioned earlier, this is a problem because each person may be connected to many devices using 4G therefore increasing their risk of receiving a virus attack.
There is also a very limited coverage for 4G devices, many people will find that they are unable to use 4G at all in many places, and therefore it can feel like a waste of money for many people.
 

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