Chapter 1: Configuration
Configuring quality of service
Page
1-239
Figure 36 SM Prioritization on SM
The feature does not take effect, however, until SM Prioritization is enabled on the AP, because the
scheduler runs on the AP. Prioritization Allocation percentages per group are configured on the AP to
determine how many timeslot resources are dedicated to each priority group.
Enabling of the feature and allocation percentages per group are configured in Configuration ->
Quality of Service tab -> SM Prioritization Configuration on the AP GUI as shown in
With Cambium’s SM prioritization feature, we guarantee a percentage of slot resources to each
prioritization group. If the resource allocation demands of the SMs in the High Priority allocation group
are met without allocating all of that group’s allocation percentage, the remaining resources can be
used for any unmet demands for SMs in the Low Group. Similarly, if the resource allocation demands of
the SMs in the Low Priority allocation group are met without allocating all of that group’s allocation
percentage, the remaining resources can be used for any unmet demands for SMs in the High Group. If
the sector has 100% utilization, the resource allocation per group will equal the percentages configured
on the AP. This feature can be used to provide guaranteed frame allocation to high priority clients, such
as business customers. Although SM Prioritization Group 1 is called the “High Priority” group, and SM
Prioritization Group 2 is called the “Low Priority” group, this does not mean that 1 group is scheduled
resources before the other group. The intention is, by adjusting the number of SMs in the High Priority
group and the allocation percentages per group, the SMs in the High Priority group will have a higher
“slots/SMs” ratio.
The following figure shows the SM Prioritization configuration at the AP with this feature enabled.
Figure 37 SM Prioritization on AP
In the example shown in
, 2 of the 8 SMs have been configured for the High Priority Group. The
other 6 are in the Low Priority group. 45% of the air interface timeslot resources have been allocated to
the Low Priority group. If, for example, all SMs are fully active and all resources in this sector are fully
utilized, then 55% of the air interface slot resources will be shared between the 2 High Priority SMs, per
direction, and the remaining 45% of the resources will be shared between the other 6 SMs.
If, on the other hand, only 40% of the resources are needed to meet the scheduling demands of the 2
High Priority SMs, the additional 15% that was pre-allocated to the High Priority group can then be used
for the Low Priority group, maintaining 100% slot utilization in the sector.
Summary of Contents for PMP 450 AP
Page 51: ...Chapter 1 Configuration Quick link setup Page 1 23 ...
Page 155: ...Chapter 1 Configuration Configuring security Page 1 127 ...
Page 163: ...Chapter 1 Configuration Configuring security Page 1 135 ...
Page 164: ...Chapter 1 Configuration Configuring security Page 1 136 ...
Page 193: ...Chapter 1 Configuration Configuring radio parameters Page 1 165 ...
Page 194: ...Chapter 1 Configuration Configuring radio parameters Page 1 166 ...
Page 195: ...Chapter 1 Configuration Configuring radio parameters Page 1 167 ...
Page 206: ...Chapter 1 Configuration Configuring radio parameters Page 1 178 ...
Page 210: ...Chapter 1 Configuration Configuring radio parameters Page 1 182 ...
Page 636: ...Chapter 5 Troubleshooting Logs Page 5 16 Figure 95 SM Authorization log ...