Number of Failed Downlink EGPRS TBF Establishments due to No Channel

Measurement Counter

A9303: DOWN_EGPRS_TBF_ESTB_FAIL_NO_CHAN_RES

Description

This measurement provides the number of failed downlink EGPRS 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 EGPRS TBF Establishment Attempts and Number of Downlink EGPRS TBF Abnormal Releases due to No Channel, this measurement indicates the congestion of the downlink EGPRS TBF due to no channel in a granularity period.

Unit

Integer number or integer.

Measurement Point

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

Figure 1 Failed downlink EGPRS TBF establishments due to no channel

Formula

This is an original counter without involving any formula.