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Content for  TS 23.060  Word version:  16.0.0

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5.6.3  Control Plane

The control plane consists of protocols for control and support of the user plane functions:
  • controlling the GPRS network access connections, such as attaching to and detaching from GPRS;
  • controlling the attributes of an established network access connection, such as activation of a PDP address;
  • controlling the routeing path of an established network connection in order to support user mobility; and
  • controlling the assignment of network resources to meet changing user demands.
The following control planes are used in both A/Gb mode and Iu mode unless specifically indicated.
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5.6.3.1  MS - SGSN (A/Gb mode)Word‑p. 65
Reproduction of 3GPP TS 23.060, Figure 7: Control Plane MS - SGSN in A/Gb mode
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Legend:
  • GPRS Mobility Management and Session Management (GMM/SM): This protocol supports mobility management functionality such as GPRS attach, GPRS detach, security, routeing area update, location update, PDP context activation, and PDP context deactivation, as described in clauses "Mobility Management Functionality" and "PDP Context Activation, Modification, Deactivation, and Preservation Functions".

5.6.3.2  MS - SGSN (Iu mode)

Reproduction of 3GPP TS 23.060, Figure 8: Control Plane MS - SGSN in Iu mode
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Legend:
  • Iu mode Mobility Management and Session Management (GMM/SM): GMM supports mobility management functionality such as attach, detach, security, and routeing area update, as described in clause "Mobility Management Functionality". SM supports PDP context activation and PDP context deactivation, as described in clause "PDP Context Activation, Modification, Deactivation, and Preservation Functions".
  • SMS supports the mobile-originated and mobile-terminated short message service described in TS 23.040.
  • Radio Access Network Application Protocol (RANAP): This protocol encapsulates and carries higher-layer signalling, handles signalling between the 3G SGSN and Iu mode RAN, and manages the GTP connections on the Iu interface. RANAP is specified in TS 25.413. The layers below RANAP are defined in TS 25.412 and TS 25.414.
  • Radio Link Control (RLC): The RLC protocol offers logical link control over the radio interface for the transmission of higher layer-signalling messages and SMS. RLC is defined in TS 25.322.
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5.6.3.3  Gn/Gp-SGSN - HLRWord‑p. 66
Reproduction of 3GPP TS 23.060, Figure 9: Control Plane Gn/Gp-SGSN - HLR
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Legend:
  • Mobile Application Part (MAP): This protocol supports signalling exchange with the HLR, as defined in TS 29.002.
  • TCAP and SCCP are the same protocols as used to support MAP in CS PLMNs.
  • The Signalling Bearer is one of the signalling bearers specified in TS 29.202.

5.6.3.4  SGSN - MSC/VLR

Reproduction of 3GPP TS 23.060, Figure 10: Control Plane SGSN - MSC/VLR
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Legend:
  • Base Station System Application Part + (BSSAP+): A subset of BSSAP procedures supports signalling between the SGSN and MSC/VLR, as described in clause "Mobility Management Functionality" and in TS 29.018. The requirements for the lower layers are specified in TS 29.016.

5.6.3.5  SGSN - EIR

Reproduction of 3GPP TS 23.060, Figure 11: Control Plane SGSN -  EIR
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Legend:
  • Mobile Application Part (MAP): This protocol supports signalling between the SGSN and the EIR, as described in clause "Identity Check Procedures".

5.6.3.5a  S4-SGSN - EIR |R8|Word‑p. 67
Reproduction of 3GPP TS 23.060, Figure 11A: Control Plane S4-SGSN - EIR
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Legend:
  • Diameter: This protocol supports MS identity check procedure between S4-SGSN and EIR (S13'), as described in clause "Identity Check Procedures". Diameter is defined in RFC 3588 [96].
  • Stream Control Transmission Protocol (SCTP): This protocol transfers signalling messages. SCTP is defined in RFC 4960 [35].

5.6.3.6  SGSN - SMS-GMSC or SMS-IWMSC

Reproduction of 3GPP TS 23.060, Figure 12: Control Plane SGSN   SMS GMSC and SGSN - SMS IWMSC (MAP based)
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Legend:
  • Mobile Application Part (MAP): This protocol supports signalling between the SGSN and SMS GMSC or SMS IWMSC over the Gd interface, as described in clause 16.1.
Reproduction of 3GPP TS 23.060, Figure 12A: Control Plane SGSN SMS GMSC and SGSN SMS IWMSC (Diameter based)
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The Gdd interface may be used to support a Diameter based signalling between a SGSN supporting EPS interfaces and the SMS GMSC or SMS IWMSC, as described in clause 16.1.
An Interworking Function may be used for interworking between a SGSN supporting the Gdd interface (Diameter based), and a SMS-GMSC or SMS-IWMSC only supporting the Gd interface (MAP Based).

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