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Content for  TS 23.122  Word version:  16.6.1

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1  ScopeWord‑p. 6
The present document gives an overview of the tasks undertaken by the Core network protocols of a Mobile Station (MS) when in idle mode, that is, switched on but typically not having a dedicated channel allocated. It also describes the corresponding network functions. The idle mode functions are also performed by a GPRS MS as long as no dedicated channel is allocated to the MS. The conditions when the idle mode functions are performed by an MS in the UTRA RRC connected mode states are specified in TS 25.331. The conditions when the idle mode functions are performed by an MS in the E-UTRAN are specified in TS 36.304. The conditions when the idle mode functions are performed by an MS in the NG-RAN are specified in TS 36.304 and TS 38.304. The conditions when the idle mode functions are performed by an MS in the NG-RAN RRC inactive state are specified in TS 36.331 and TS 38.331.
The present document defines the PLMN selection for a multi mode MS that supports both 3GPP and 3GPP2 systems. The common PLMN selection logic covers also PLMNs that are available in 3GPP2 system, but the present document makes no changes on the cdma2000® signalling towards networks that are available via 3GPP2 system.
The present document gives procedures for using the CSG cells, whenever such use is permitted.
The present document gives procedures for using the CAG cells, when the MS supports CAG.
The present document specifies the SNPN selection.
This 3GPP TS outlines how the requirements of the 22 series Technical Specifications (especially TS 22.011) on idle mode operation shall be implemented. Further details are given in TS 24.008.
Clause 2 of this 3GPP TS gives a general description of the idle mode process. Clause 3 outlines the main requirements and technical solutions of those requirements. Clause 4 describes the processes used in idle mode. There is inevitably some overlap between these clauses.
The present document describes the procedures for control plane solution of steering of roaming in 5GS in Annex C.
Annex C is applicable to the MS, the AMF, the UDM and the SOR-AF in the 5GS.
The present document does not consider GERAN Iu mode.
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1.1  References

The following documents contain provisions which, through reference in this text, constitute provisions of the present document.
  • References are either specific (identified by date of publication, edition number, version number, etc.) or non-specific.
  • For a specific reference, subsequent revisions do not apply.
  • For a non-specific reference, the latest version applies. In the case of a reference to a 3GPP document (including a GSM document), a non-specific reference implicitly refers to the latest version of that document in the same Release as the present document.
[1]  Void.
[2]  Void.
[3]  Void.
[4]  Void.
[5]  Void.
[6]  Void.
[7]  Void
[8]  Void.
[9]  TS 22.011   "Service accessibility".
[10]  Void.
[11]  Void.
[12]  Void.
[13]  Void.
[14]  Void.
[15]  Void.
[16]  Void.
[17]  Void.
[18]  Void.
[19]  Void.
[20]  Void.
[21]  Void.
[22]  Void.
[22A]  TS 23.003   "Numbering, addressing and identification".
[23]  TS 24.008   "Mobile Radio Interface Layer 3 specification, Core Network Protocols - Stage 3".
[23A]  TS 24.301   "Non-Access-Stratum (NAS) protocol for Evolved Packet System (EPS); Stage 3".
[24]  TS 45.002   "Multiplexing and multiple access on the radio path".
[25]  TS 45.008   "Radio subsystem link control".
[26]  Void.
[27]  TS 23.060   "General Packet Radio Service (GPRS); Service description; Stage 2".
[27A]  TS 23.682   "Architecture enhancements to facilitate communications with packet data networks and applications".
[28]  Void.
[29]  Void.
[30]  Void.
[31]  Void.
[32]  TS 25.304   "UE Procedures in Idle Mode and Procedures for Cell Reselection in Connected Mode".
[33]  TS 25.331   "RRC Protocol Specification".
[34]  TS 44.018  "Mobile radio interface layer 3 specification, Radio Resource Control Protocol".
[35]  TS 43.022   "Functions related to Mobile Station (MS) in idle mode and group receive mode".
[35A]  TS 43.318   "Generic Access Network (GAN); Stage 2".
[35B]  TS 44.318   "Generic Access Network (GAN); Mobile GAN interface layer 3 specification; Stage 3".
[36]  TR 21.905   "Vocabulary for 3GPP Specifications".
[37]  Void.
[38]  TS 21.111   "USIM and IC card requirements".
[39]  TS 44.060   "General Packet Radio Service (GPRS);Mobile Station (MS) - Base Station System (BSS) interface;Radio Link Control/Medium Access Control (RLC/MAC) protocol".
[40]  TS 31.102   "Characteristics of the USIM Application".
[41]  TS 31.111   "Universal Subscriber Identity Module (USIM), Application Toolkit (USAT)".
[42]  TS 36.331   "Evolved Universal Terrestrial Radio Access (E-UTRA) Radio Resource Control (RRC); Protocol specification".
[43]  TS 36.304   "Evolved Universal Terrestrial Radio Access (E-UTRA); User Equipment (UE) procedures in idle mode".
[44]  3GPP2 C.S0016-D v1.0: "Over-the-Air Service Provisioning of Mobile Stations in Spread Spectrum Standards".
[45]  3GPP2 C.S0011-C v2.0: "Recommended Minimum Performance Standards for cdma2000 Spread Spectrum Mobile Stations".
[46]  3GPP2 C.S0033-A v2.0: "Recommended Minimum Performance Standards for cdma2000 High Rate Packet Data Access Terminal".
[47]  TS 24.285   "Allowed Closed Subscriber Group (CSG) List Management Object (MO)".
[48]  Void.
[49]  TS 22.220   "Service requirements for Home Node B (HNB) and Home eNode B (HeNB)".
[50]  TS 24.368   "Non-Access Stratum (NAS) configuration Management Object (MO)".
[51]  TS 24.334   "Proximity-services (ProSe) User Equipment (UE) to Proximity-services (ProSe) Function Protocol aspects; Stage 3".
[52]  TS 24.333   "Proximity-services (ProSe) Management Objects (MO)".
[53]  TS 24.105   "Application specific Congestion control for Data Communication (ACDC) Management Object (MO)".
[54]  TS 36.306   "Evolved Universal Terrestrial Radio Access (E-UTRA); User Equipment (UE) radio access capabilities".
[55]  TS 43.064   "Overall description of the GPRS Radio Interface; Stage 2".
[56]  TS 36.300   "Evolved Universal Terrestrial Radio Access (E-UTRA) and Evolved Universal Terrestrial Radio Access Network (E-UTRAN); Overall description".
[57]  TS 23.167   "IP Multimedia Subsystem (IMS) emergency sessions".
[58]  TS 23.401   "GPRS enhancements for E-UTRAN access".
[59]  TS 24.386   "User Equipment (UE) to V2X control function; protocol aspects; Stage 3".
[60]  TS 24.385   "V2X services Management Object (MO)".
[61]  TS 38.304   "New Generation Radio Access Network; User Equipment (UE) procedures in Idle mode".
[62]  TS 23.501   "System Architecture for the 5G System; Stage 2".
[63]  TS 23.502   "Procedures for the 5G System; Stage 2".
[64]  TS 24.501   "Non-Access-Stratum (NAS) protocol for 5G System (5GS); Stage 3".
[65]  TS 38.331   "NR; Radio Resource Control (RRC) protocol specification".
[66]  TS 33.501   "Security architecture and procedures for 5G System".
[67]  TS 31.115   "Secured packet structure for (Universal) Subscriber Identity Module (U)SIM Toolkit applications".
[68]  TS 23.246   "Multimedia Broadcast/Multicast Service (MBMS); Architecture and Functional Description".
[69]  TS 23.221   "Architectural requirements".
[70]  TS 23.273   "5G System (5GS) Location Services (LCS)".
[71]  TS 29.544   "5G System (5GS); Secured Packet Application Function (SP-AF) services; Stage 3".
[72]  TS 29.571   "5G System (5GS); Common Data Types for Service Based Interfaces; Stage 3".
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