User Manual

BSS C ONFIGURATION AND U SER G UIDE
Page 114 Commercial in Confidence © VNL
®
2010-2011, All rights reserved
Field Description Values
activation after a previous
PDCH reduction was
triggered. An absolute
number
numFreeCsChannelsHy
st can be calculated out
of
percFreeCsChannelsH
yst. This is rounded-up
to the next integer value,
but is always less than
the number of all
configured dual service
timeslots.
4. Provide valid values in relevant fields and click Ok.
LNotes:
• Dual service channel signifies the type of radio timeslots
that can be used for CS or PS service.
• PDCH reduction feature is used to support the priority of
CS traffic over PS traffic within a cell. This is achieved by
freeing one of the busy PDCHs in a cell by re-organizing
or releasing one or more TBFs running on that PDCH. It
is triggered during establishment or handover of a CS
call or due to an OAM event, if the number of free dual
traffic radio channels for CS falls below the threshold
numFreeCsChannels and more than
minNumPdchCell PDCHs are found active. An absolute
number numFreeCsChannels can be calculated out of