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Reply To: Random Access Success Rate


That’s the thing, we don’t have those in alcatel.

Let’s try to guess.. the MS starts with a channel request on RACH, the “Channel Required” reaches the BSC, and then is counted as a “random access attempt”.

The BSC sends a Channel Activation to the BTS, if the SDCCH is not congested. Counted as a “SDCCH Request”.

The BTS replies with a Channel Activation Ack (not counted)

Then the BSC sends a Immediate Assign Command, counted as a “SDCCH allocated”.

Maybe in your formula, this is the ratio CHANNEL ACTIVATION / CHANNEL REQUIRED ?

I really cannot be sure… this indicator is not provided by alcatel. it can be computed manually though.