Date Added: Nov 2012
With the increasing interest in continuous media streaming applications such as audio and video, Quality of Service (QoS) is becoming more and more important. Providing QoS guarantees in packet access networks gives rise to several challenging issues. There are several aspects of QoS to be considered. For example, to support video communication high throughput is required and therefore, high bandwidth guarantees will have to be made. Audio communication, in contrast, does not usually require high bandwidth. End-to-end delay and delay variations are other factors that must be taking into account for time-critical traffic such as VoIP.