Measurement Counter
L9019: UP_TOTAL_GPRS_TBF
Description
This measurement provides the total number of uplink GPRS TBFs in a cell in a granularity period.
Unit
Integer number or integer.
Measurement Point
In a granularity period, every time the BSC establishes an uplink GPRS TBF, the counter is incremented by one. The successful uplink GPRS TBF establishment involves the following conditions: After sending an IMMEDIATE ASSIGNMENT message, if the BSC receives the uplink blocks on the channel allocated to the MS, it indicates that the uplink GPRS TBF establishment using one phase access is successful. Figure 1 shows the procedure of uplink GPRS TBF establishment using one phase access. Every time the BSC receives the first uplink block from the MS after sending an IMMEDIATE ASSIGNMENT message (see measurement point A), the counter is incremented by one.
After sending a PACKET UPLINK ASSIGNMENT message, if the BSC receives the uplink data blocks on the channel allocated to the MS, it indicates that the uplink GPRS TBF establishment using single-block access is successful. Figure 2 shows the procedure of uplink GPRS TBF establishment using single block access. Every time the BSC receives the first uplink block from the MS after sending a PACKET UPLINK ASSIGNMENT message (see measurement point A), the counter is incremented by one.
If the MS initiates an uplink GPRS TBF establishment request on the PACCH, the BSC receives the uplink data blocks on the channel allocated to the MS after sending a PACKET UPLINK ASSIGNMENT message, it indicates that the uplink GPRS TBF establishment on the PACCH is successful. Figure 3 shows the procedure of uplink GPRS TBF establishment on the PACCH. Every time the BSC receives the uplink block sent from the MS after sending the PACKET UPLINK ASSIGNMENT message (see measurement point A), the counter is incremented by one.
Formula
This is an original counter without involving any formula.