Справочник Пользователя для Radwin Ltd. 5XACMD3CN
FinM Deployment Guide
Release 4.2.46
3‐20
Method of Operation
Configuring the Radio Network
»
The detected signal from the TBS co‐channel neighbor is below the threshold signal
strength for de‐activation (the values are different from that of activation: see
strength for de‐activation (the values are different from that of activation: see
).
3.5.3 Method of Operation
The co‐channel neighbor interference mitigation option works as follows:
Split timeslots: TBS1 is configured to split the timeslots in the frame between it and between
its “co‐channel neighbor” (in our case, with three frequencies, it’s with TBS4)
1
. The
result for the first co‐channel neighbor pair is that TBS1 transmits on half of the time
slots, and TBS4 transmits on the other half. See
slots, and TBS4 transmits on the other half. See
.
TMU1 is instructed to receive those timeslots that were assigned to TBS1, and ignore
others.
others.
Notice that in our example, TBS1 and TBS7 are assigned the same timeslots. This is
not a problem because TBS1 and TBS7 are so far away from each other that their
mutual signals do not interfere.
not a problem because TBS1 and TBS7 are so far away from each other that their
mutual signals do not interfere.
Repeat for all co‐channel neighbors: This configuration is epeated with TBS2 vs. TBS5, again
with TBS3 vs. TBS6, and even with TBS7 vs. TBS4, and so on down the line.
Table 3‐4: Threshold signal strength levels ‐ de‐activation criteria
Signal Strength between
TBS and TMU
Difference in signal
strength between TBS
and its co‐channel
neighbor
De‐Activate
Option?
‐70 or above
Greater than 20
Yes
‐70 or above
20 or less
No
‐74 to ‐71
Greater than 18
Yes
‐74 to ‐71
18 or less
No
‐78 to ‐75
Greater than 16
Yes
‐78 to ‐75
16 or less
No
‐79 or below
Greater than 13
Yes
‐79 or below
13 or less
No
1. Which TBS receives which timeslots is determined by the CNIndex parameter (see page
3‐24
)
For Regualtor Approval Only