User's Manual

Chapter 4 - Operation and Administration
BreezeACCESS VL System Manual
168
4.2.6.5 Performance Parameters
The Performance Parameters menu enables defining a series of parameters that
control the method by which traffic is transmitted through the wireless access
network.
The Performance Parameters menu includes the following parameters:
 RTS Threshold
 Minimum Contention Window
 Maximum Contention Window
 Multicast Modulation Level (AU only)
 Maximum Modulation Level
 Average SNR Memory Factor
 Number of HW Retries
 Burst Mode
 Adaptive Modulation Algorithm
 Concatenation Parameters
4.2.6.5.1 RTS Threshold
The RTS Threshold parameter defines the minimum frame size that requires an
RTS/CTS (Request To Send/Clear To Send) handshake. Frames whose size is
smaller than the RTS Threshold value are transmitted directly to the wireless link
without being preceded with RTS frames. Setting this parameter to a value larger
than the maximum frame size eliminates the RTS/CTS handshake for frames
transmitted by this unit.
The available values range from 20 to 4032 bytes for units with HW revision C,
and 20 to 2200 for units with HW revision A or B.
The default value is 60 bytes for SUs. For AUs with HW revision C the default is
4032, and for AUs with HW revision A or B the default is 2200. It is
recommended that these values be used to ensure that RTS/CTS is never used in
the AU.