Providing Quality of Service over General Packet Radio Service: Admission Control, Radio Resource Reservation, and Scheduling

Mobile wireless networks aim to support different applications, especially those based on voice, video, and data. However, these applications differ a lot in terms of Quality of Service (QoS) requirements. We propose a combination of three different QoS mechanisms over General Packet Radio Service (GPRS) network elements, in order to manage efficiently the scarce frequency spectrum. The first mechanism is a Call Admission Control (CAC) where connections are admitted only if the network is capable of providing the required resources. The second is a Radio Resource Reservation mechanism that ensures bandwidth to ongoing high priority applications. Finally, a scheduling mechanism provides a more regular behaviour to services.