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3GPP Glossaries

 

 

Interfaces / Reference Points

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 Lb     #  Le     #  Lgd     #  Lp     #  Lr     #  LTE Uu    

 


between  BSC  and  SMLC

[R4]+

In GERAN, a SMLC supports positioning via signalling on the Lb interface to the BSC serving the target MS. Signalling on this interface uses BSSAP-LE, which is specified in TS 49.031.

In UTRAN, the Lb interface is not standardized, the SMLC functionality is included in SRNC.

Source:   TS 23.002, clause 6a.3.5

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between  GMLC  and  External LCS Client

[R4]+

The Le interface is used by the external LCS client to retrieve location information from the LCS server. Signalling on this interface may use the OMA Mobile Location Protocol (MLP) and Open Service Access Application Programming Interface (OSA-API), TS 29.198.

Source:   TS 23.002, clause 6a.3.8

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between  GMLC  and  SGSN

[R12]+

Lgd is the interface that is used by the GMLC to convey a location request to the SGSN currently serving a particular target UE whose location was requested. The interface is also used by the SGSN to return location results to the GMLC. This interface is applicable only for an SGSN supporting EPS based interfaces and protocols. The Lgd interface is defined in TS 29.172.

Source:   TS 23.002, clause 6a.3.15

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between  SMLC  and  SMLC

[R4]+

In GERAN, a SMLC may support the Lp interface to enable access to information and resources owned by another SMLC. Signalling on this interface uses BSSAPP-LE, which is defined in TS 49.031, and SMLCPP, which is specified in TS 48.031.

In UTRAN, the SMLC functionality is included in SRNC and the Iur interface shall include the Lp interface type of functionality.

Source:   TS 23.002, clause 6a.3.6

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between  GMLC  and  GMLC

[R6]+

The Lr interface is used by the GMLC to communicate with other GMLCs. Signalling on this interface may use the OMA Roaming Location Protocol (RLP).

Source:   TS 23.002, clause 6a.3.11

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between  UE  and  E-UTRAN

[R8]+

See E-UTRAN Uu.

Source:   –

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