A Solution for Designing 4G Networks in Urban Areas

International Mobile Telecommunications-Advanced (IMT-Advanced) or 4th Generation (4G) Cellular Systems are mobile IP-based systems. This generation is expected to provide users with access to advanced IP-based services and applications, supported by mobile and fixed broadband networks which are packet-based.4G networks support a wide range of data rates with different quality of services requirement. WiMAX embodies the IEEE 802.16 family of standards that provide wireless broadband access. The IEEE 802.16e – 2005 or IEEE 802.16m promises to address the ever increasing demand for mobile high speed Wireless data in forth – generation (4G) network. This network provides wireless broadband and IP connectivity. In this paper we proposed a solution for designing 4G Networks by mobile WiMAX technology in urban with an intelligent Medium Access Control (MAC) that adapts to Physical layer (PHY) to provides requirements 4G. In our scheme we present 24 scenarios with different parameters. The performance of proposed scheme is evaluated by simulation using Opnet