8/18/2019 Iu Signalling Connection Setup

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Performance Management Areas

2.1.3 Iu Signalling Connection Setup

This traffic scenario describes both successful and unsuccessful attempts toset up an Iu connection. See Figure 4.

The main counters for this scenario are as follows:

• pmNoIuSigEstablishAttemptCs, pmNoIuSigEstablishAttemptPs

• pmNoIuSigEstablishSuccessCs, pmNoIuSigEstablishSuccessPs

C 00 01317C

UEInitial Direct

Transfer 

Signalling Connection setup

triggered by Initial Direct

Transfer message

Succesfull SCCPConnection Setup?

pmNoIuSigEstablishSuccessPs +or 

pmNoIuSigEstablishSuccessCs +

pmNoIuSigEstablishAttemptPs +or 

pmNoIuSigEstablishAttemptCs +or none

No

 Yes

No

  pmIdtDiscardedCs + *pmIdtDiscarded +

or   pmIdtDiscardedPs + **

pmIdtDiscarded +or 

pmIdtDiscarded +

End Signalling

Connection setup

*) Stepped for Establisment Cause “Originated Conversational Call”

**) Stepped for Establisment Causes "Originated Interactive call","Originated Background Call", or "Originating Subscribed Traffic Call"

RANAPOverload Control?

 Yes

Figure 4 Iu Signalling Connection Setup scenario 

2.1.4 RAB Establishment

This traffic scenario describes both successful and unsuccessful attempts toset up a Radio Access Bearer for a requested service.

The main counters for this scenario are as follows:

• pmNoNormalNasSignReleaseCs, pmNoNormalNasSignReleasePs

• pmNoSuccRbReconfPsIntDch, pmNoSuccRbReconfOrigPsIntDch

11103/1551-AXD 105 03/1 Uen G | 2010-08-24