Enforcing Detach on Last PDN Deactivation

Feature Summary and Revision History

Summary Data

Applicable Products or Functional Area

MME

Applicable Platforms

  • ASR 5500

  • VPC-DI

  • VPC-SI

Feature Default

Disabled - Configuration Required

Related Changes in This Release

Not Applicable

Related Documentation

  • Command Line Interface Reference

  • MME Administration Guide

Revision History

Revision Details

Release

MME is enhanced to detach the UE on deletion of the last PDN associated with the NB-IoT. For more information, see the eDRX Support on the MME section in the MME Administration Guide.

21.27

Feature Description

MME is enhanced to detach the UE on deletion of the last PDN associated with the NB-IoT access type. The enhancement supports a deviation from the 3GPP standards in this respect.

This scenario is applicable only when Attach without PDN Connectivity is enabled for the user.

Configuring NB-IoT in UE Context

Use the following configuration to detach the UE on the deletion of the last PDN for NB-IoT access type even if the UE did an attach with Attach Without PDN Connectivity enabled: 


configure 
            call-control-profile  profile_name
                        [ remove ] nb-iot ignore-attach-without-pdn
               end

NOTES:

  • nb-iot ignore-attach-without-pdn: Allows detach of Attach-Without-PDN UE after last PDN disconnect.

  • remove: Disables the existing configuration.