4RF Aprisa SR+ User Manual - page 113
Managing the Radio | 111
Aprisa SR+ User Manual 1.5.3
Listen Before Send
with
Acknowledgement
Channel access scheme where network elements listen to ensure
the channel is clear, before trying to access the channel. This
mode is optimised for low load networks and repeated networks.
With Acknowledgement, unicast requests from the remote station
are acknowledged by the base station to ensure that the
transmission has been successful. If the remote station does not
receive an acknowledgement, then random back-offs are used to
reschedule the next transmission.
Enabling acknowledgments increases reliability of transport but
reduces available channel capacity so if application has the
capability to handle lost or duplicate messages, the Access Scheme
should be set to Listen Before Send without Acknowledgement.
Point To Point (Half
Duplex)
Channel access scheme used for Mirrored Bits ®.
The default setting is Access Request.
Repeater
This parameter sets the Media Access Control (MAC) used by the radio for over the air communication.