User manual

Chapter 2 - Managing a Single Device/Cell Service Parameters Page
AlvariCRAFT Device Manager 124 User Manual
MIR and CIR Ranges:
2.20.1.3 MIR/CIR in BreezeNET B
The Maximum Information Rate (MIR) value specifies the maximum data rate
available for burst transmissions, enabling to limit it to a value lower than the
maximum supported by the unit. The MIR values indicate the achievable net
throughput for FTP applications.
The MIR algorithm uses buffers to control the flow of data. To balance the
performance over time, a special Burst Duration algorithm is employed to enable
higher transmission rates after a period of inactivity. If no data is received from
MIR Downlink (Kbps) Applicable only for SU. The Maximum Information Rate of the
downlink from the AU to the SU. The MIR value cannot be lower than
the corresponding CIR value.
Available values are shown below. Valid values are multiples of 128
(N*128).
MIR Uplink (Kbps) Applicable only for SU. The Maximum Information Rate of the uplink
from the SU to the AU. The MIR value cannot be lower than the
corresponding CIR value.
Available values are shown below. Valid values are multiples of 128
(N*128).
Maximum Delay (msec) Applicable only for SU. Sets the maximum permitted delay in the
buffers system. As certain applications are very sensitive to delay, if
relatively high delays are permitted, these applications may suffer
from poor performance due to data accumulation in the buffers from
other applications, such as FTP. The Maximum Delay parameter
limits the number of available buffers. Data that is delayed more than
the permitted maximum delay is discarded. If the SU supports
applications that are very sensitive to delay, the value of the
Maximum Delay should be decreased.
Valid values range from 300 to 10000 (milliseconds).
Unit Type
MIR (Kbps) CIR (Kbps)
Uplink Downlink Uplink Downlink
SU-3 128-2,048 128-3,072 0-2,048 0-2,048
SU-6 128-4,096 128-6,016 0-4,096 0-6,016
SU-8 128-13,440 128-13,440 0-11,264 0-11,264
SU-54 128-53,888 128-53,888 0-45,056 0-45,056
SU-I 128-4,096 128-6,016 0-4,096 0-6,016
SU-V 128-8,064 128-2,048 0-8,064 0-2,048