Controlling Notify-Request during Inter-RATTAU/HO

This chapter describes the following topics:

• Feature Summary and Revision History, on page 1• Feature Changes, on page 2• Command Changes, on page 2• Performance Indicator Changes, on page 3

Feature Summary and Revision HistorySummary Data

MMEApplicable Product(s) or FunctionalArea

• ASR 5500

• VPC-DI

• VPC-SI

Applicable Platform(s)

Disabled – Configuration RequiredFeature Default

Not applicableRelated Changes in This Release

• Command Line Interface Reference

• MME Administration Guide

Related Documentation

Revision History

Revision history details are not provided for features introduced before releases 21.2 and N5.1.Important

Controlling Notify-Request during Inter-RAT TAU/HO1

ReleaseRevision Details

21.3 and later releasesIn this release, sending the Notify-Request during 3G to 4G TAU or HO can becontrolled using the new tau inter-rat notify-request CLI command introduced inthe Call Control Profile Configuration mode.

Pre 21.2First introduced.

Feature ChangesIn this release, sending the Notify-Request during 3G to 4G Tracking Area Update (TAU) or handover (HO)can be optionally controlled. A new CLI command tau inter-rat notify-request introduced in the Call ControlProfile configuration mode enables MME to send the Notify-Request.

Previous Behavior:When UE does a TAU/HO from peer MME/SGSN, the GGSN/P-GW IP address givenby the peer node in context response was compared with the MIP6-IP-Address given by the HSS in UpdateLocation Answer (ULA) message. If these two IP addresses are different, then MME used to send theNotify-Request after receiving ULA. This behavior was not dependent on any configuration.

New Behavior:When UE does a TAU/HO from peer MME/SGSN, and the GGSN/P-GW IP address givenby the peer node in context response andMIP6-IP-Address given by the HSS in ULA are different, thenMMEwill not send the Notify-Request. A new CLI command tau inter-rat notify-request is added in the CallControl Profile Configuration mode to control sending the Notify-Request. By default, MME will not sendthe Notify-Request in the above-mentioned scenario.

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The diameter suppress notify-request CLI command under HSS Peer Service has higher priority than thetau inter-rat notify-request CLI command under Call Control Profile.

Important

Command Changes

tau inter-ratIn the Call Control Profile Configuration mode, the tau inter-rat command has been enhanced to enablesending the Notify-Request to HSS during inter-RAT TAU/HO.

configurecall-control-profile profile_name

[ remove ] tau inter-rat notify-requestend

Notes:

• The tau inter-rat notify-request command is disabled by default.

• The remove tau inter-rat notify-request command disables sending the Notify-Request during inter-RATTAU/HO.

Controlling Notify-Request during Inter-RAT TAU/HO2

Controlling Notify-Request during Inter-RAT TAU/HOFeature Changes

Performance Indicator Changes

show configuration verboseThe default output of this command is:

call-control-profile cc1remove tau inter-rat notify-request

The output of this command when notify-request is enabled:

call-control-profile cc1tau inter-rat notify-request

Controlling Notify-Request during Inter-RAT TAU/HO3

Controlling Notify-Request during Inter-RAT TAU/HOPerformance Indicator Changes

Controlling Notify-Request during Inter-RAT TAU/HO4

Controlling Notify-Request during Inter-RAT TAU/HOshow configuration verbose