the BS to include a particular QoS parameter set. The QoS parameter sets of a service flow may contain a reference to the service class name as a macro that selects all of the QoS parameters of the service class. The service flow QoS parameter sets may augment and even override the QoS parameter settings of the service class, subject to authorization by the BS. Mobile WiMAX networks require common definition of service classes and associated Author- izedQoSParamSets in order to facilitate operation and interoperability across a distributed topology [8,22,23]. Global service class names are supported to enable operation in this context. In practice, the global service class names are used as a baseline convention for communicating Author- lizedQoSParamSet or AdmittedQoSParamSet The global service class parameters are as follows [1]: Uplink/Downlink Indicator parameter identifies service flow direction relative to the originating entity. Maximum Sustained Traffic Rate is a parameter that defines the peak information rate of the service. The rate is expressed in bits per second and pertains to the service data units at the input to the system. This parameter does not limit the instantaneous rate of the service since this is governed by the physical attributes of the entrance port. However, at the destination network interface in the UL direction, the service is regulated to conform to this parameter, on the average, over time. On the network in the DL direction, it may be assumed that the service was already regulated at the network entry. If this parameter is set to zero, then there is no explicitly mandated maximum rate. The maximum sustained traffic rate field specifies only a bound, not a guarantee that the rate is available. Maximum Traffic Burst parameter defines the maximum burst size that is accommodated for the service. Since the physical rate of input/output ports, any air interface, and the backhaul, will in general be greater than the maximum sustained traffic rate parameter for a service, this parameter