Recent advances in wireless mobile communication technologies have led to a wider range of requirements. Currently, third generation (3G) wireless cellular networks aim to provide multimedia services in addition to voice and data. However, the challenges facing 3G and next generation cellular networks are in maintaining the quality of service (QoS) requirements for each class of the multi-service traffic in face of the limited radio resources and the mobility of users. In addition, the growing demand of mobile users for integration with the global communication infrastructure would necessitate their demand for having reliable services similar to wired communication and data networks. Accordingly, many issues should be addressed in 3G and next generation cellular networks to achieve the requirement for seamless roaming and internetworking.

Recent advances in wireless mobile communication technologies have led to a wider range of requirements. Currently, third generation (3G) wireless cellular networks aim to provide multimedia services in addition to voice and data. However, the challenges facing 3G and next generation cellular net...