What Is 4G ?

Depending on the level of the reader 4G can be defined in different ways. In simplest terms, 4G is the next generation of wireless networks that will replace 3G networks sometimes in future. In another context, 4G is simply an initiative by academic R&D labs to move beyond the limitations and problems of 3G which is having trouble getting deployed and meeting its promised performance and throughput. In reality, as of first half of 2002, 4G is a conceptual framework for or a discussion point to address future needs of a universal high speed wireless network that will interface with wire line backbone network seamlessly.

Here's something we don't see often: a wireless technology that could actually arrive earlier than predicted. Fourth-generation (4G) cellular services, intended to provide mobile data at rates of 100Mbits/sec or more, were originally scheduled for 2010. Some cell phone companies have moved the target up to 2006, while rival wireless systems could bring similar bandwidth to a few fortunate networkers a lot sooner.

Two aspects characterize the resulting fourth generation wireless network scenario (4G). First, the network consists of a collection of heterogeneous networks that provide end-to-end IP connectivity over wireless. In addition, it is a "stupid network" scenario, where the network only provides packet transport, and therefore it is an "operator-less" network with respect to services. This scenario also implies that the mobile users and devices that participate in communication over 4G must become smarter, i.e., they must be able to respond to a wide range of events.

Posted in: 4G Network