How Do I Perform a Soft Handover?
Last updated: January 16, 2009
This section is only applicable to the lab application.
Go to the Soft Handover Information Screen
-
Press the
CALL SETUP
key.
-
Select
Handovers
(
F5
) on the
Call Control
menu, then
Soft Handover Info
(
F4
).
(Optional) Perform Loopback BER or BLER Testing
-
Configure and initialize the loopback BER (or BLER) measurement (see
How Do I Make a Loopback Bit Error Ratio (BER) Measurement?
and
How Do I Make a Block Error Ratio (BLER) Measurement?
).
-
Set
Soft Handover
(
F3
) to
Off
.
-
Set
Cell Power
(
F7
) to
-110 dBm/3.84 MHz
.
-
Set
Cell2 Power
(
F2
) to
-103.5 dBm/3.84 MHz
. Note as you increase cell 2 power or decrease cell 1 power, BER increases.
-
Set
Soft Handover
(
F3
) to
On
. BER should decrease significantly, as the cell 2 signal is now combined with the cell 1 signal, rather than acting as interference. (If cell 2 level is too high, the messaging to order a soft handover may not be properly received by the UE and an error will be posted. If this is the case, simply decrease cell 2 power, enable soft handover, then return cell 2 its previous level)
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