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3GPP Glossaries:  Network entities

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|  MBMS‑GW  |  MCE  |  MGCF  |  MME  |  MMS Relay/Server  |  MRB  |  MRFC  |  MRFP  |  MS  |  MSC  |  MSCF  |  MSC‑S  |  MSC‑VLR  |  MTC‑AAA  |  MTC‑IWF  |

 

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specified from  Rel-9  in
TS 23.246, clause 5.9
TS 36.300, clause 15.1.1 

The MBMS‑GW is a logical entity that is present between the BM‑SC and eNBs whose principal functions is the sending/broadcasting of MBMS packets to each eNB transmitting the service. The MBMS‑GW uses IP Multicast as the means of forwarding MBMS user data to the eNB. The MBMS GW performs MBMS Session Control Signalling (Session start/update/stop) towards the E‑UTRAN via MME.

See Subscriber Data in the MBMS‑GW   here.


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specified from  Rel-9  in
TS 36.300, clause 15.1.1 

The MCE is a functional entity providing functions for admission control and allocation of radio resources by E‑UTRAN and for MBMS session control.


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defined from  Rel-5
Source:   TS 23.002, clause 4a.7.2 

The MGCF:
  • Controls the parts of the call state that pertain to connection control for media channels in an IMS-MGW.
  • Communicates with CSCF, BGCF, and circuit switched network entities.
  • Determines the next hop depending on the routing number for incoming calls from legacy networks.
  • Performs protocol conversion between ISUP/TCAP/SIP-I and the IM subsystem call control protocols.
  • Out of band information received in MGCF may be forwarded to CSCF/IMS-MGW.


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specified from  Rel-8  in
TS 23.401, clause 4.4.2 

MME is the control plane entity within EPS supporting Mobility Management functions. The functions of the Serving GW include:
  • NAS signalling and security;
  • Inter CN node signalling for mobility between 3GPP access networks (terminating S3);
  • PDN GW and Serving GW selection;
  • UE Reachability procedures;
  • ...
See Subscriber Data in the MME   here.


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specified from  Rel-6  in
TS 23.140, clause 5.2 

The MMS Relay/Server is responsible for storage and notification, reports, and general handling of messages. The MMS Relay/Server may also provide convergence functionality between External Servers and MMS User Agents and thus enable the integration of different server types across different networks.


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defined from  Rel-8
Source:   TS 23.002, clause 4a.7.4b 

The MRB supports the sharing of a pool of heterogeneous MRF resources by multiple heterogeneous applications. MRB assigns (and later releases) specific suitable MRF resources to calls as requested by the consuming applications, based on MRF attributes specified by the applications as well as other criteria.

The MRB may take the following kinds of information into account when assigning MRF resources to an application:
  • the specific characteristics of the media resources required for the call or calls;
  • the identity of the application;
  • rules for allocating MRF resources across different applications;
  • per-application or per-subscriber SLA or QoS criteria; and
  • capacity models of particular MRF resources.


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defined from  Rel-5
Source:   TS 23.002, clause 4a.7.4 

The MRFC:
  • Controls the media stream resources in the MRFP.
  • Interprets information coming from an AS and S-CSCF (e.g. session identifier) and control MRFP accordingly.
  • Generates CDRs.


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defined from  Rel-5
Source:   TS 23.002, clause 4a.7.4a 

The MRFP:
  • Controls bearers on the Mb reference point.
  • Provides resources to be controlled by the MRFC.
  • Mixes incoming media streams (e.g. for multiple parties).
  • Sources media streams (for multimedia announcements).
  • Processes media streams (e.g. audio transcoding, media analysis).
  • Floor Control (i.e. manage access rights to shared resources in a conferencing environment).


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defined from  GSM Rel-96
Source:   TS 23.002, clause 4.3 

The MS consists of the physical equipment used by a PLMN subscriber; it comprises the Mobile Equipment (ME) and the Subscriber Identity Module (SIM), called UMTS Subscriber Identity Module (USIM) for Release 99 and following. The ME comprises the Mobile Termination (MT) which, depending on the application and services, may support various combinations of Terminal Adapter (TA) and Terminal Equipment (TE) functional groups. These functional groups are described in TS 24.002.


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specified from  GSM Phase 2  in
TS 09.02, clause 4.1.3 

The Mobile-services Switching Centre (MSC) constitutes the interface between the radio system and the fixed networks. The MSC performs all necessary functions in order to handle the circuit switched services to and from the mobile stations.

When needed, the MSC can be implemented in two different entities: the MSC-S, handling only signalling, and the CS-MGW, handling user's data. A MSC Server and a CS-MGW make up the full functionality of a MSC.


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specified from  Rel-4  in
TS 23.205, clause 5.1.1.1 

The MSC server mainly comprises the call control and mobility control parts of a GSM/UMTS MSC. It is also integrated with a VLR to hold the mobile subscriber's service data and CAMEL related data. The MSC server terminates the user-network signalling and translates it into the signalling over the Nc interface. The MSC Server terminates the Iu control plane signalling and its transport bearer. It also terminates the signalling over the Mc interface with the Media Gateway.


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specified from  Rel-6  in
TS 23.140, clause 5.4 

The MSCF is a functional entity which may be connected to the MMS Relay/Server to execute messaging related service logic. It may influence addressing, routeing and charging for multimedia messages. Furthermore it may control access rights of the user.


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defined from  GSM Rel-96
Source:   –

see VLR


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specified from  Rel-11  in
TS 23.682, clause 4.4.7 

To support translation of the IMSI to External Identifier(s) at the network egress, an AAA function (MTC AAA) is used in the HPLMN. The MTC AAA may be deployed to return the External Identifier(s) based on IMSI. Alternatively the MTC AAA may be deployed as a RADIUS/Diameter proxy between the GGSN/PGW and the AAA server in the external PDN.


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specified from  Rel-11  in
TS 23.682, clause 4.4.2 

To support the Indirect and Hybrid models of MTC, one or more instances of an MTC InterWorking Function (MTC-IWF) reside in the HPLMN. A MTC-IWF may be a standalone entity or a functional entity of another network element. The MTC-IWF hides the internal PLMN topology and relays or translates signaling protocols used over Tsp to invoke specific functionality in the PLMN.



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