Cambium Networks PMP 450 AP, Руководство по настройке

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Chapter 1: Configuration Configuring quality of service
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Weighted Fair Queuing (WFQ)
Note
This feature is not supported on PMP 450m.
This feature lets the user assign a percentage of air interface resources to each of the Data Channel
levels. The WFQ apply both to the DL and the UL. Note that there is no BC/MC traffic in the UL
direction.
One of the benefits of WFQ is that the configuration can be accomplished at the AP rather than at each
individual SMs. This feature can be used with or in place of existing CIR settings. Unlike CIR, which is set
in kbps independent of the modulation rate, the WFQ feature operates on a percentage of air interface
resources, or timeslots.
Figure 38 is an example of a WFQ configuration on the AP. This can be found in Configuration ->
Quality of Service tab -> Weighted Fair Queuing Configuration on the AP GUI.
In this particular sector, we have 30 Data channels spread across 8 registered SM’s. 4 levels of QoS have
been configured on 7 of the SM’s, 2 levels of QoS have been configured on 1 of the SM’s.
Figure 38 Weighted Fair Queuing Configuration
The above figure shows that 4% of the air interface resources have been reserved for
Broadcast/Multicast traffic, 22% of the available air interface timeslot have been reserved for the lowest
priority traffic, 22% for medium priority traffic, 26% for high priority traffic, and 26% for the highest
priority traffic (Ultra High Priority).
If, at any point in the time, the aggregate traffic load across all SMs on 1 QoS level is less than that level’s
Weighted Fair Queue allocation, then those unused slots will be allocated for traffic in other QoS levels,
based on strict priority.