A New Approach in Admission Control and Radio Resource Management for Multiservice UMTS

The Universal Mobile Telecommunications System (UMTS) has been designed to support real-time services including both multimedia and packet data services. Multimedia in UMTS means that the simultaneous transfer of speech, data, text, pictures, audio and video with a maximum data rate of 2 Mbit/s will be possible. Simultaneous use of several applications raises the demands for mechanisms which can guarantee quality of service (QoS) for each application. UMTS provides several radio resource management (RRM) [2] strategies to the QoS requirements. Some services do not have stringent delay requirements. This opens up the area of using the radio resources efficiently while guaranteeing a certain target QoS and maintaining the planned coverage and capacity of the network. Within the UMTS bearer service, the radio bearer service covers all aspects of radio interface transport [3]. The main focus of this chapter is the RRM strategies used in the radio bearer service.