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3GPP Glossaries:  Interfaces / Reference Points

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|  Ua  |  Ub  |  Ud  |  Um  |  Up  |  Upa  |  Ut  |  Uu  |

 

Ua

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between  UE
and  NAF

see it   here

specified from  Rel-6  in
TS 33.220, clause 4.3 
TS 24.109, clause 5 

This reference point carries the application protocol, which is secured using the keys material agreed between UE and BSF as a result of the run of HTTP Digest AKA over reference point Ub.


Ub

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between  UE
and  BSF

see it   here

specified from  Rel-6  in
TS 33.220, clause 4.3 
TS 24.109, clause 4 

This reference point provides mutual authentication between the UE and the BSF. It allows the UE to bootstrap the session keys based on 3GPP AKA infrastructure.

The HTTP Digest AKA protocol, which is specified in RFC 3310, is used on the reference point Ub. It is based on the 3GPP AKA TS 33.102 protocol. The interface to the USIM is as specified in TS 31.102 and to the ISIM is as specified in TS 31.103.


Ud

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between  Application Front Ends
and  UDR

see it   here

specified from  Rel-9  in
TS 23.335, clause 4.3
TS 29.335 

This reference point allows the different Application Front Ends to create, read, modify and delete user data stored in the UDR using the harmonized access interface.


Um

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between  MS
and  BSS

specified from  GSM Rel-96
Source:   TS 23.002, clause 6a.3.7 

The interface is specified in the TS 44-series and TS 45-series.


Up

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between  MS
and  GANC

specified from  Rel-6  in
TS 43.318 

The Up interface between the GANC and the MS through a generic IP access network is defined for the GAN A/Gb mode architecture, as well as the GAN Iu mode architecture.


Upa

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between  UE
and  NAF

see it   here

specified from  Rel-8  in
TS 33.223, clause 4.3
TS 24.109, clause 4a 

The GBA-Push related to the Upa interface is between a NAF and UE. GBA-Push is a mechanism to bootstrap the security between a NAF and a UE, without forcing the UE to contact the BSF to initiate the bootstrapping.


Ut

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between  UE
and  SIP AS

specified from  Rel-6
Source:   TS 23.002, clause 6a.7.18 

This interface enables the user to manage information related to his services. Such as creation and assignment of Public Service Identities, management of authorization policies that are used e.g. by Presence service, conference policy management, etc.

The AS may need to exhibit security related functions for the Ut interface, the details of these security functions are described in TS 33.222.

For the protocol at the Ut reference point, HTTP shall be supported.


Uu

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between  UE
and  RNS

specified from  Rel-3
Source:   TS 23.002, clause 6a.3.9 

The interface is specified in the TS 24-series and TS 25-series.



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