Quick Start Guide

Designed for Operators, by Operators
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3.5.5.4 Quality of Service, QoS Profile
A QoS Profile contains all information in regards to QoS type, latency, throughput and etc.
These Profiles are independent of direction and can be applied to multiple service flows. The types of QoS
that are offered are:
• Best Effort or BE. Alternatively this is described as MIR or Maximum Information Rate.
• Unsolicited Grant Service or UGS. An alternative for this is CIR or Committed Information Rate.
• Extended Real-Time Polling Service or eRTPS. This is also known as Dynamic CIR.
Best Effort is by far the most used QoS type that is configured in most deployments. This Qos type is
‘bursty’ in nature and provides for up to a maximum rate. As an example, it could provide for internet
speeds of up to 3 Mbps. The disadvantage of a Best Effort Service is that it does not provide any guarantee
that the configured throughput will be achieved. A Base Station will offer throughput to BE configured
Subscribers if there is bandwidth available and there are no other CIR configured Subscribers demanding
throughput
Unsolicited Grant Service connections provide for a dedicated and guaranteed Service Level Agreement.
It is typically used for applications that require constant bit rate services such as VoIP. Any traffic assigned
to a UGS service flow will be allocated for the sole use by that Subscriber. The allocated traffic for this
UGS will be removed from the available ‘pool’ of throughput for the Base Station to which the Subscriber
has been configured. UGS connections typically provide low latency which is ideal for VoIP applications.
Extended Real-Time Polling Service is a QoS type that is very similar to UGS. Traffic is allocated for the sole
use by a Subscriber CPE but only when the Subscriber CPE requests traffic. However, when traffic is
not being requested by the Subscriber, the allocated eRTPS bandwidth can be used by any other
Subscriber. The eRTPS is the preferred QoS type for VoIP applications due to the dynamic resource control.
There are 32 QoS profiles that have been pre-configured and stored in the Base Station.
These can be viewed at the summary level (Figure 115). At Main Web GUI Interface Screen select the
Configuration Tab and then select the service-profile Main Menu Sub-Element.
For full examination and configuration of the QoS profiles then the User needs to navigate into the Main
Menu Sub-Element level.