C o m m i ssion ing M anu al
M an ag i n g B an d w i d t h
When the total CIR of active SPRs is greater than the available bandwidth for data
(CIR overbooking), ASWipLL implements its
CIR Proportional Degradation
feature. CIR overbooking can derive from the following:
Large number of active SPRs (running data)
Large number of VoIP calls
Modem rate decreases to an unexpected value
Poor RF conditions (may be relevant even in a, e.g. fixed modem rate)
In the event of CIR overbooking, the CIR decreases in proportion to the configured
CIR of the SPRs. In other words, each SPR receives bandwidth that equals to
k*configured CIR
, where 0<
k
<1 (
k
is referred to as the proportion factor).
Therefore, the proportion between CIR bandwidth values of all SPRs is maintained.
11.2. Configuring Asymmetric Bandwidth
The subsections below describe procedures for configuring Asymmetric CIR and
MIR bandwidth for multiple SPRs. In our example, the SPRs are configured with
the following CIR and MIR values:
For downlink (i.e. BSR to SPR):
MIR:
1500 bps
CIR:
256 bps
For uplink (i.e. SPR to BSR):
MIR:
128 bps
CIR:
64 bps
01040311-07
Airspan Networks Inc.
11-3
