UMTS QoS Classes
When defining the UMTS QoS classes,
also referred to as traffic classes, the restrictions and limitations of the
air interface have to be taken into account. It is not reasonable to define
complex mechanisms as have been in fixed networks due to different error
characteristics of the air interface. The QoS mechanisms provided in the
cellular network have to be robust and capable of providing reasonable QoS
resolution. Table 1 illustrates the QoS classes for UMTS.
There are
four different QoS classes:
- Conversational class;
- streaming class;
- Interactive class; and
- Background
class.
