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ASN Gateway QoS and Service Flow Configuration
WiMAX QoS Parameters and Functions ▀
Cisco ASR 5000 Series Access Service Network Gateway Administration Guide ▄
OL-22953-01
WiMAX QoS Parameters and Functions
This section describes the functional parameters you need for QoS and service flow configuration at the ASN Gateway
level.
level.
QoS Parameters
The QoS parameter set is required for service flows with service classes. The QoS parameter set is a group that consists
of the maximum sustained data rate, committed data rate, maximum latency, maximum traffic burst, allowable jitter,
and priority of traffic for a subscriber.
of the maximum sustained data rate, committed data rate, maximum latency, maximum traffic burst, allowable jitter,
and priority of traffic for a subscriber.
Committed data rate: The minimum data rate committed for a subscriber data flow. The data rate is measured
in bits per second in an average over time. If a user transmits data up to the committed data rate, the guarantee
of throughput, latency, and jitter is maintained.
of throughput, latency, and jitter is maintained.
Maximum sustained data rate: The maximum bandwidth allowed for a subscriber data flow. This data rate is
maintained as Best-Effort (BE) service. If the user increases the data rate beyond this rate, service is not
allowed.
allowed.
Allowable jitter: The maximum delay variation allowed for the connection.
Maximum traffic burst: The burst size, in bytes, of the service flow.
Maximum latency: The maximum duration of time required to retrieve the information over network interface
by the system.
Traffic Priority: The priority of service flow. If two service flows with the same QoS parameters are defined,
the set traffic priority it considered.
Service Class
The service class consists of the QoS parameter set and is defined at the base station or ASN Gateway. Configure the
service class to define each QoS parameter of service flow for different sets of subscriber.
service class to define each QoS parameter of service flow for different sets of subscriber.
You can explicitly define each QoS parameter for service flow in WiMAX QoS implementations, or may indirectly use
a service class which defines the QoS parameter set. Service class is associated with service flow through the QoS
descriptor and named as Service Class Name and Global Service Class Name.
a service class which defines the QoS parameter set. Service class is associated with service flow through the QoS
descriptor and named as Service Class Name and Global Service Class Name.
Service Class Name: A group of QoS parameters defined at the base station. The parameters are referenced by a
service flow to apply certain QoS parameters for an individual or a set of subscribers.
Global Service Class Name: Similar in function to the Service Class Name except that the Global Service Class
Name may not be modified by a base station and remains consistent among all base stations. The Global
Service Class Names is a rules-based naming system and contains referential QoS parameter codes for an
individual or a set of subscribers.
Service Class Names is a rules-based naming system and contains referential QoS parameter codes for an
individual or a set of subscribers.