GMLC Interworking Support

Feature Summary and Revision History

Summary Data

Applicable Product(s) or Functional Area

MME

Applicable Platform(s)

  • ASR 5500

  • VPC-DI

  • VPC-SI

Feature Default

Enabled - Configuration Required

Related Changes in This Release

Not applicable

Related Documentation

  • Command Line Interface Reference

  • MME Administration Guide

Revision History

Revision Details

Release

First introduced.

21.14

Feature Description

MME supports standard 3GPP defined GLMC interworking for location service. Last known location information is now sent when detach and no paging available state.

When the UE is in detached state or not-reachable state and the CLI is configured for the respective state(s) along with the experimental result code, the last known location info AVP's viz., "Location-Estimate, EUTRAN-Positioning-Data, ECGI and Age-Of-Location-Estimate (if the age is greater than 60 seconds)" will be sent.

GMLC Interworking Support Configuration

This section documents configuration of GMLC Interworking Support related functionality.

Including Experimental Result Code in PLA

Use the following configuration to Include experimental result code in PLA.

configure 
   context context_name 
      location-service service_name 
         pla ue-state { detached | not-reachable } send experimental-result-code experimental_result_code 
         no pla ue-state { detached | not-reachable } send experimental-result-code  
         end

Important

If there is any connection issue and PLA is not sent between SLG peer and MME, in that case if the UE is in detached or not reachable state and CLI for the experimental result code is configured, MME may not encode the experimental result code and the other AVP's in the PLA response message.

Notes:

  • detached : Specifies the UE disconnecting.

  • not-reachable : Specifies no paging response.

  • send experimental-result-code experimental_result_code : Sends the result code value to be encoded in PLA depending on ue-state when PLR is received with GMLC Location type set to "Current/Last Known Location". experimental_result_code must be an integer from 1000 to 6000.

  • no : Disables the inclusion of experimental result code in PLA.

Monitoring and Troubleshooting

The following section describes commands available to monitor GMLC Interworking Support on the MME.

Show Commands and Outputs

show location service

A new show command out put "Experimental-Result-Code in PLA: Enabled(UE state not-reachable:4221, Detached:4223" is added to indicate Experimental Result Code in PLA is enabled or disabled.