More advertising hub bub than anything else. 3G stands for third generation family of standards for mobile telecommunications devices. (Guess what 4G then stands for, yep 4th Generation). 3G allows telephone, video and data communications at higher speeds than older type networks. It also allows a broader range of s4G, (essentially the same thing as the term Beyond 3G often used in research papers), refers to the fourth generation of cellular wireless and is a successor to 3G (also known as IMT 2000) and 2G standards. The rest of this article associates 4G with IMT Advanced (International Mobile Telecommunications Advanced), as defined by ITU-T, though 4G is a broader term that has had several different and more vague definitions during the years. A 4G cellular system must have target peak data rates of up to approximately 100 Mbit/s for high mobility such as mobile access and up to approximately 1 Gbit/s for low mobility such as nomadic/local wireless access, according to the ITU requirements. [1]A 4G system is expected to provide a comprehensive and secure all-IP based solution where facilities such as voice, broadband Internet access and streamed multimedia should be provided to users. ervices through more efficient spectral usage.