5.3.12 Update CSG Location Procedure

23.4013GPPGeneral Packet Radio Service (GPRS) enhancements for Evolved Universal Terrestrial Radio Access Network (E-UTRAN) accessRelease 18TS

The Update CSG Location procedure takes place when the SGSN/MME needs to retrieve the CSG subscription information of the UE from the CSS.

Figure 5.3.12-1: Update CSG Location Procedure

1. The SGSN/MME sends Update CSG Location Request (MME Identity, IMSI, MSISDN) to the CSS. The MSIDSN is included if available.

2. The CSS acknowledges the Update CSG Location message by sending an Update CSG Location Ack (IMSI, CSG Subscription data) message to the SGSN/MME.