E******* CDR Formula help

[RF Engr]

Dear All,Kindly help me.
I have E******* formula which is

TCH Drop Rate (%) [TCH Drop Rate (%)] = 100*(<TFNDROP>+<TFNDROPSUB>+<THNDROP>+<THNDROPSUB>)/(<THCASSALL>+<THCASSALLSUB>+<TFCASSALLSUB>+<TFCASSALL>

The explanation is as follows

TFNDROP Dropped connections due to failure.
TFNDROPSUB Dropped connections in overlaid cell due to failure.
THNDROP Dropped connections due to failure.
THNDROPSUB Dropped connections in overlaid cell due to failure

THCASSALL Assignment complete for all MS power classes
THCASSALLSUB Assignment complete in overlaid cell for all MS power classes
TFCASSALLSUB Assignment complete in overlaid cell for all MS power classes
TFCASSALL Assignment complete for all MS power classes

I have questions that
1- what is overlaid cell means(is it intracell HO)
2- Does it include HO attempts in formula or it just contains assignment attempts means excluding HO attempts.

Thanks in advance.

[auto_art]

Dear All,Kindly help me.
I have E******* formula which is

TCH Drop Rate (%) [TCH Drop Rate (%)] = 100*(<TFNDROP>+<TFNDROPSUB>+<THNDROP>+<THNDROPSUB>)/(<THCASSALL>+<THCASSALLSUB>+<TFCASSALLSUB>+<TFCASSALL>

The explanation is as follows

TFNDROP Dropped connections due to failure.
TFNDROPSUB Dropped connections in overlaid cell due to failure.
THNDROP Dropped connections due to failure.
THNDROPSUB Dropped connections in overlaid cell due to failure

THCASSALL Assignment complete for all MS power classes
THCASSALLSUB Assignment complete in overlaid cell for all MS power classes
TFCASSALLSUB Assignment complete in overlaid cell for all MS power classes
TFCASSALL Assignment complete for all MS power classes

I have questions that
1- what is overlaid cell means(is it intracell HO)
2- Does it include HO attempts in formula or it just contains assignment attempts means excluding HO attempts.

Thanks in advance.
1. overlaid & undelaid cell is used if u are using HCS feature in ur NW. its hirerichal cell structure particularliy used for Dual band nw. OL ho means HO between OL layer and UL layer. read HCS feature doc available in alex.

ur formula is not using HO attepmts..formula including HO is given below.
tch_drop==100*<TNDROP>/(<TCASSALL>+<SUMIHOSUCC>-<SUMIABSUCC>-<SUMIAWSUCC>-<SUMOHOSUCC>+<SUMOABSUCC>+<SUMOAWSUCC>+<SUMEIHOSUCC>-<SUMEIABSUCC>-<SUMEIAWSUCC>-<SUMEOHOSUCC>+<SUMEOABSUCC>+<SUMEOAWSUCC>)

[RF Engr]

1. overlaid & undelaid cell is used if u are using HCS feature in ur NW. its hirerichal cell structure particularliy used for Dual band nw. OL ho means HO between OL layer and UL layer. read HCS feature doc available in alex.

ur formula is not using HO attepmts..formula including HO is given below.
tch_drop==100*<TNDROP>/(<TCASSALL>+<SUMIHOSUCC>-<SUMIABSUCC>-<SUMIAWSUCC>-<SUMOHOSUCC>+<SUMOABSUCC>+<SUMOAWSUCC>+<SUMEIHOSUCC>-<SUMEIABSUCC>-<SUMEIAWSUCC>-<SUMEOHOSUCC>+<SUMEOABSUCC>+<SUMEOAWSUCC>)
Thanks a lot for information.