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3GPP Glossaries:  Interfaces / Reference Points

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Pc

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specified from  Rel-6
Source:   TS 23.141, clause 4.3.10 

This reference point shall allow the MSC Server/VLR to report the mobility management related events to the Network Agent (such as attach/detach/location area update) and may allow the MSC Server/VLR to report call related events (such as call setup with the bearer information and call release).

This reference point may allow the MSC Server/ VLR to report Mobility States (such as Detached, Idle and Connected) and Call States (such as Busy with Bearer information and Idle).

This reference point is implemented using the existing mechanisms of CAMEL phase 4, 3GPP Release 5.

For 3GPP2 systems, the interface to this reference point is defined in 3GPP2 X.S0004.


PC1

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between  ProSe AS
and  ProSe Application in UE

specified from  Rel-12
Source:   TS 23.303, clause 4.3 

It is used to define application level signalling requirements. This reference point is not specified yet.


PC2   (Diameter)

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between  ProSe AS
and  ProSe Function

specified from  Rel-12
in  TS 23.303  and  TS 29.343 

The PC2 reference point is used to define the interaction between ProSe Application Server and ProSe functionality provided by the 3GPP EPS via ProSe Function (e.g. name translation) for EPC-level ProSe discovery.

Commands:
  • PXR/PXA:  ProXimity-Action-Request/Answer
  • XAR/XAA:  ProXimity-Application-Request/Answer
See also  RFC 6733  for Diameter Base Protocol, and  TS 29.230  for 3GPP-specific Diameter codes and identifiers.


PC3

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between  UE
and  ProSe Function

specified from  Rel-12
Source:   TS 23.303, clause 4.3 

PC3 relies on EPC user plane for transport (i.e. an "over IP" reference point). It is used to authorise ProSe Direct Discovery and EPC-level ProSe Discovery requests, and perform allocation of ProSe Application Codes corresponding to ProSe Application Identities used for ProSe Direct Discovery. It is used to define the authorisation policy per PLMN for ProSe Direct Discovery (for Public Safety and non-Public Safety) and communication (for Public Safety only) between UE and ProSe Function.


PC4a   (Diameter)

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between  HSS
and  ProSe Function

specified from  Rel-12
in  TS 23.303  and  TS 29.344 

The PC4a reference point is used to provide subscription information in order to authorise access for ProSe Direct Discovery and ProSe Direct Communication on a per PLMN basis. It is also used by the ProSe Function (i.e. EPC-level ProSe Discovery Function) for retrieval of EPC-level ProSe Discovery related subscriber data.

Commands:
  • PIR/PIA:  ProSe-Subscriber-Information-Request/Answer
  • UPR/UPA:  Update-ProSe-Subscriber-Data-Request/Answer
  • PNR/PNA:  ProSe-Notify-Request/Answer
  • PSR/PSA:  ProSe-Initial-Location-Information-Request/Answer
See also  RFC 6733  for Diameter Base Protocol, and  TS 29.230  for 3GPP-specific Diameter codes and identifiers.


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between  SLP (OMA Secure User Plane Location Platform)
and  ProSe Function

specified from  Rel-12
Source:   TS 23.303, clause 4.3 

It is used by the ProSe Function (i.e. EPC-level ProSe Discovery Function) in the role of LCS client to query the SLP defined in OMA AD SUPL.


PC5

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specified from  Rel-12
Source:   TS 23.303, clause 4.3 

It is used for control and user plane for ProSe Direct Discovery, ProSe Direct Communication and ProSe UE-to-Network Relay.


PC6/PC7   (Diameter)

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specified from  Rel-12
in  TS 23.303  and  TS 29.345 

The PC6 reference point is defined between a ProSe Function in the HPLMN and a ProSe Function in a local PLMN.

The PC7 reference point is defined between a ProSe Function in the HPLMN and a ProSe Function in a visited PLMN.

The PC6/PC7 reference points are used for:
  • HPLMN control of service authorization for ProSe;
  • Authorization of ProSe Direct Discovery requests;
  • Retrieval of Discovery Filter(s) corresponding ProSe Application ID name(s);
  • Translation of ProSe Application Code(s) to the associated ProSe Application Name.
Commands:
  • PAR/PAA:  ProSe-Authorization-Request/Answer
  • PDR/PDA:  ProSe-Discovery-Request/Answer
  • PMR/PMA:  ProSe-Match-Request/Answer
  • PIR/PIA:  ProSe-Match-Report-Info-Request/Answer
  • PRR/PRA:  ProSe-Proximity-Request/Answer
  • PLR/PLA:  ProSe-Location-Update-Request/Answer
  • ALR/ALA:  ProSe-Alert-Request/Answer
  • RPR/RPA:  ProSe-Cancellation-Request/Answer
See also  RFC 6733  for Diameter Base Protocol, and  TS 29.230  for 3GPP-specific Diameter codes and identifiers.



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