User manual

AP User Manual January 2004
Software Release 4.1
The high-priority channel is enabled by configuration of four parameters in the Configuration web
page. These parameters are:
• High Priority Uplink Percentage
• UAcks Reserved High
• DAcks Reserved High
• NumCtrlSlots Reserved High
4.3.1 High Priority Uplink Percentage
The High Priority Uplink Percentage parameter defines the percentage of the uplink bandwidth to
dedicate to low-latency traffic. When set, this percentage of RF link bandwidth is permanently
allocated to low-latency traffic, regardless of whether low-latency traffic is present. The system
provides no corresponding downlink parameter because scheduling algorithms in the AP allocate
this bandwidth as needed.
4.3.2 UAcks Reserved High
The UAcks Reserved High parameter defines the number of slots used to acknowledge high-
priority data that is received by an SM. The recommended setting for this parameter is 3. The
recommended setting for the corresponding TotalNumUAcksSlots parameter is 6.
4.3.3 DAcks Reserved High
The DAcks Reserved High parameter defines the number of slots used to acknowledge high-
priority data that is received by an AP. The recommended setting for this parameter is 3. The
recommended setting for the corresponding NumDAckSlots parameter is 6.
4.3.4 NumCtlSlots Reserved High
The NumCtlSlots Reserved High parameter defines the number of slots used to send control
messages to an AP. The recommended setting for this parameter is 3. The recommended setting
for the corresponding NumCtlSlots parameter is 6.
4.3.5 Allocations to Downlink and Uplink
Figure 9 illustrates the format of the high-priority channel.
(NOT TO SCALE)
Data SlotsBeacon
Control
Control
Collision
Data
Slots
H
P
HP indicates
high-priority slots
Downlink
Uplink
Figure 9: High-priority channel layout
Issue 5 Page 23 of 102