Channel Requests (Non-Call Type)

Measurement Counter

CA300B: CELL_IMM_ASS_REQ_NO_CA

Description

When an MS requires network services for reasons except for MOC, MTC, Call Re-Establishment, and Emergency Call, it sends the BTS a CHAN REQ message on the RACH. After receiving this message, the BTS reports a CHAN RQD message to the BSC for a dedicated channel. This measurement provides the number of CHAN RQD messages initiated for non-call purposes.

Unit

Integer number or integer.

Measurement Point

As shown in Figure 1, each time the BSC receives a CHAN RQD message from the BTS and the access reason is not MOC, MTC, Call Re-Establishment, or Emergency Call (see measurement point A), the counter is incremented by one.

Figure 1 Immediate assignment procedure

Formula

Channel Requests (Non-Call Type) = Channel Requests (Location Updating) + Channel Requests (Packet Call) + Channel Requests (LMU+Reserved) + Channel Requests (Protocol Incompatible)