22 Location Information

22.0783GPPCustomised Applications for Mobile network Enhanced Logic (CAMEL)Release 17Service descriptionStage 1TS

The purpose of this procedure is to obtain the location of a particular subscriber. The resolution of the location information may be based on the Cell Identity or Service Area Identity of the subscriber’s location, or may be based on more accurate positioning information.

During Mobile Terminating call handling, the HLR may obtain the subscriber’s location from the VPLMN.

The CSE may interrogate the HLR in order to obtain a particular subscriber’s location based on the cell identity, service area identity or the routing area identity. The HLR may return location information as a result of paging the subscriber.

The HLR may return location information as defined in TS 23.018 [9].

The CSE may interrogate the GMLC in order to obtain a particular subscriber’s current location based on accurate geographical information as defined by LCS in TS 22.071 [8]. The GMLC has the possibility to reject any interrogation from any CSE.