When sending a failure response to any received request, depending on operator policy, the LRF may insert a Response-Source header field with an "fe" header field parameter constructed with the URN namespace "urn:3gpp:fe", the fe-id part of the URN set to "lrf" and optionally an appropriate fe-param part of the URN set in accordance with ...

This Technical Specification (TS) has been produced by ETSI 3rd Generation Partnership Project (3GPP). The present document may refer to technical specifications or reports using their 3GPP identities. These shall be interpreted as being references to the corresponding ETSI deliverables.

7.1.3 Emergency Session Establishment using LRF/RDF Figure 7.2 illustrates a high level call flow for the IMS emergency session establishment procedure using LRF/RDF to retrieve location and routing information.

Feb 2, 2012 · Location Retrieval Function (LRF) is responsible for retrieving the location information of the UE that has initiated an IMS emergency session. LRF utilizes the a Routing Determination Function (RDF) to provide the routing information to the E‑CSCF for routing the emergency request.

In the 3GPP IMS, the LRF retrieves location information for users that have initiated an emergency session. This location information is provided to the E-CSCF (Emergency CSCF) in order to facilitate routing of the call to a suitable PSAP (Public Safety Answering Point).

The BroadForward LBS solution supports all relevant interfaces for all mobile network generations and LCS client integration. For 2G/3G the MAP based 3GPP Lg and Lh interfaces are supported. For 4G the 3GPP Diameter SLg and SLh interfaces are supported.

This Technical Specification (TS) has been produced by ETSI 3rd Generation Partnership Project (3GPP). The present document may refer to technical specifications or reports using their 3GPP identities. These shall be interpreted as being references to the corresponding ETSI deliverables.

The PSAP URI can be retrieved from LRF (see subclause 5.11.3) or from local configuration. The PSAP address will either point to a PSAP connected to the IM CN subsystem or to a PSAP connected to the PSTN.

Apr 5, 2024 · In the context of mobile communication networks, particularly those adhering to the 3GPP (3rd Generation Partnership Project) standards, the Location Retrieval Function (LRF) plays a crucial role in emergency situations.

The present document has been developed within the 3rd Generation Partnership Project (3GPP TM) and may be further elaborated for the purposes of 3GPP. The present document has not been subject to any approval process by the 3GPP Organizational Partners and shall not be …