The article focuses on the architecture of fourth generation (4G) of wireless mobile communication systems from the user's perspectives. It was expected that the 4G would follow the third generation (3G) of communication systems and will emerge between 2010 and 2015 as an ultra-high-speed broadband wireless network. In Asia, the Japanese operator NTT DoCoMo defines 4G by introducing the concept of mobile multimedia like global mobility support, integrated wireless solution and customized personal service, which mainly concentrates on public systems and envisions 4G as the extension of 3G cellular service. There's a need for a methodological change in the design of 4G. The key features of 4G include user friendliness and user personalization, and terminal heterogeneity and network heterogeneity. The real technical step-up of 4G with respect to 3G can be summarized with the word integration, which means seamless integration of already existing and new networks, services, and terminals, in order to satisfy ever-increasing user demands.