Number of Failed Downlink GPRS TBF Establishments due to No Channel

Measurement Counter

A9103:DOWN_GPRS_TBF_ESTB_FAIL_NO_CHAN_RESP

Description

This measurement provides the number of failed downlink GPRS TBF establishments due to no channel in a granularity period. A high measurement value is yielded because radio channels of the cell are insufficient or faulty. Together with Number of Downlink GPRS TBF Establishment Attempts and Number of Downlink GPRS TBF Abnormal Releases due to No Channel, this measurement indicates the congestion of the downlink GPRS TBF due to no channel in a granularity period.

Unit

Integer number or integer.

Measurement Point

Figure 1 shows the procedure of failed downlink GPRS TBF establishment due to no channel. When the BSC receives a new downlink PDU request from the SGSN, the counter is incremented by one if the downlink GPRS TBF establishment fails due to no channel (see measurement point A).

Figure 1 Number of failed downlink GPRS TBF establishments due to no channel

Formula

This is an original counter without involving any formula.