Scheduling Disciplines for HFC Systems : What can we learn from ATM scheduling ?

Support of multimedia traac with diierent Quality of Service (QoS) requirements on an integrated network has proven to be dif-cult. It requires simple design of conceptually complex mechanisms. We study the application of proposed ATM scheduling disciplines to a Hybrid Fiber/Coaxial (HFC) system. Switching networks are based on point-to-point communication links whereas HFC is a shared medium. If we can show that the structural diierences between the environments do not aaect the functionality of the scheduler a great amount of knowledge on supporting QoS can be imported to HFC systems from switching studies. As an example Self Clock Fair Queueing (SCFQ) is embedded in a HFC system. Simulation results show that the scheduler maintains its capabilities in guaranteeing QoS in the HFC system.