se A Global Uniform Standard for Secure Service Provision over 4G Infrastructures.

4G Networks:Generation of Wireless network
Since their birth in the early seventeenth and all along their di_erent generations, mobile communication networks have crossed important evolutionary phases aiming to de_ne increasingly sophisticated technologies allowing the provision of seamless global roaming, quality of service, and high data rates. Today, numerous technologies are co-existing to provide a unifying set of services. The coming era of 4th generation networks is foreseeing a potential smooth merging of all these heterogeneous technologies. A 4G network is characterized by the integration and the convergence of all communication networks, which are intrinsically characterized by their diversity, their heterogeneity, and their dynamicity, into one network. The main challenges raised by this network are the guarantee of seamless global roaming, the provision of cost effective high data rates, the definition of efficient user-centric customized service models, and the optimization of the quality of service provision.
1.1:Generation:
1.1.1:Wireless first generation overview (1G) 1G (or 1-G) refers to the first generation of wireless telephone technology (mobile telecommunications). These are the analog telecommunications standards that were introduced in the 1980s and continued until being replaced by 2G digital telecommunications. The main difference between the two mobile telephone systems (1G and 2G), is that the radio signals used by 1G networks are analog, while 2G networks are digital.
Although both systems use digital signaling to