Measurement Counter
R4400B: TRX_IMM_ASS_SUCC_SD
R4409B: TRX_IMM_ASS_SUCC_TCH
Description
In the immediate assignment (SDCCH) procedure, the MS successfully seizes the SDCCH assigned by the BSC. The MS reports an SABM frame on the SDCCH to the BTS to notify the BTS that the radio link layer has entered the status of multiframe link establishment. The BTS returns a UA frame to the MS and at the same time sends an ESTABLISH INDICATION message to the BSC to notify the BSC that a link is normally established on the air interface. Upon receipt of the ESTABLISH INDICATION message, the BSC considers that the immediate assignment of the SDCCH is successful and the counter R4400B "Successful Immediate Assignments (SDCCH)" is incremented by one for the TRX where the SDCCH resides.
In the immediate assignment (TCH) procedure, the MS successfully seizes the TCH assigned by the BSC. The MS reports an SABM frame on the TCH to the BTS to notify the BTS that the radio link layer has entered the status of multiframe link establishment. The BTS returns a UA frame to the MS and at the same time sends an ESTABLISH INDICATION message to the BSC to notify the BSC that a link is normally established on the air interface. Upon receipt of the ESTABLISH INDICATION message, the BSC considers that the immediate assignment of the TCH is successful and the counter R4409B "Successful Immediate Assignments (TCH)" is incremented by one for the TRX where the TCH resides.
Unit
Integer number or integer.
Measurement Point
As shown in Figure 1, each time the BSC receives an EST IND message from the BTS (see measurement point C), the counter R4400B or R4409B is incremented by one based on the specific type of the channel successfully assigned.
Formula
This is an original counter without involving any formula.