Content for TS 36.413 Word version: 18.2.0
1 Scope p. 16
The present document specifies the E-UTRAN radio network layer signalling protocol for the S1 interface. The S1 Application Protocol (S1AP) supports the functions of S1 interface by signalling procedures defined in this document. S1AP is developed in accordance to the general principles stated in TS 36.401 and TS 36.410.
2 References p. 16
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]
TR 21.905: "Vocabulary for 3GPP Specifications".
[2]
TS 36.401: "E-UTRAN Architecture Description".
[3]
TS 36.410: "S1 General Aspects and Principles".
[4]
ITU-T Recommendation X.691 (07/2002): "Information technology - ASN.1 encoding rules: Specification of Packed Encoding Rules (PER)".
[5]
ITU-T Recommendation X.680 (07/2002): "Information technology - Abstract Syntax Notation One (ASN.1): Specification of basic notation".
[6]
ITU-T Recommendation X.681 (07/2002): "Information technology - Abstract Syntax Notation One (ASN.1): Information object specification".
[7] Void
[8]
TS 23.402: "Architecture enhancements for non-3GPP accesses".
[9]
TS 23.216: "Single Radio Voice Call Continuity (SRVCC)".
[10]
TS 32.422: "Trace control and configuration management".
[11]
TS 23.401: "General Packet Radio Service (GPRS) enhancements for E-UTRAN access".
[12]
TS 36.414: "Evolved Universal Terrestrial Radio Access Network (E-UTRAN); S1 data transport".
[13]
TS 23.203: "Policy and charging control architecture"
[14]
TS 36.300: "Evolved Universal Terrestrial Radio Access (E-UTRA), Evolved Universal Terrestrial Radio Access Network (E-UTRAN); Overall description; Stage 2".
[15]
TS 33.401: "Security architecture".
[16]
TS 36.331: "Evolved Universal Terrestrial Radio Access (E-UTRAN); Radio Resource Control (RRC) Protocol Specification".
[17]
TS 23.272: "Circuit Switched Fallback in Evolved Packet System; Stage 2".
[18]
TS 48.018: "General Packet Radio Service (GPRS); BSS GPRS Protocol (BSSGP)".
[19]
TS 25.413: "UTRAN Iu interface RANAP signalling".
[20]
TS 36.304: "Evolved Universal Terrestrial Radio Access (E-UTRA), User Equipment (UE) procedures in idle mode".
[21]
TS 23.003: "Technical Specification Group Core Network and Terminals; Numbering, addressing and identification".
[22]
TS 36.423: "Evolved Universal Terrestrial Radio Access Network (E-UTRAN); X2 Application Protocol (X2AP)".
[23]
TS 48.008: "Mobile Switching Centre-Base Station System (MSC-BSS) interface; Layer 3 specification".
[24]
TS 24.301: "Non-Access Stratum (NAS) protocol for Evolved Packet System (EPS); Stage 3".
[25]
3GPP2 A.S0008-C: "Interoperability Specification (IOS) for High Rate Packet Data (HRPD) Radio Access Network Interfaces with Session Control in the Access Network".
[26]
TS 36.213: "Evolved Universal Terrestrial Radio Access (E-UTRA); Physical layer procedures".
[27]
3GPP2 C.S0024-B: "cdma2000 High Rate Packet Data Air Interface Specification".
[28]
TS 22.220: "Service requirements for Home Node Bs and Home eNode Bs".
[29]
TS 23.041: "Technical realization of Cell Broadcast Service (CBS)".
[30]
TS 48.016: "General Packet Radio Service (GPRS); Base Station System (BSS) - Serving GPRS Support Node (SGSN) interface; Network service".
[31]
TS 37.320: "Universal Terrestrial Radio Access (UTRA) and Evolved Universal Terrestrial Radio Access (E-UTRA); Radio measurement collection for Minimization of Drive Tests (MDT);Overall description; Stage 2".
[32]
TS 29.281: "General Packet Radio Service (GPRS); Tunnelling Protocol User Plane (GTPv1-U)".
[33]
TS 24.008: "Mobile radio interface Layer 3 specification; Core network protocols; Stage 3".
[34]
TS 36.455: "Evolved Universal Terrestrial Radio Access (E-UTRA); LTE Positioning Protocol A (LPPa)".
[35]
TS 29.060: "GPRS Tunnelling Protocol (GTP) across the Gn and Gp interface".
[36]
TS 29.274: "Evolved Packet System (EPS); Evolved General Packet Radio Service (GPRS) Tunnelling Protocol for Control plane (GTPv2-C); Stage 3".
[37]
TS 23.139: "3GPP system - fixed broadband access network interworking".
[38]
TS 23.007: "Technical Specification Group Core Network Terminals; Restoration procedures".
[39]
TS 36.104: "Base Station (BS) radio transmission and reception".
[40]
TR 25.921: (version.7.0.0) "Guidelines and principles for protocol description and error handling".
[41]
TS 36.306: "User Equipment (UE) radio access capabilities".
[42]
RFC 5905 (2010-06): "Network Time Protocol Version 4: Protocol and Algorithms Specification".
[43]
TS 26.247: "Transparent end-to-end Packet-switched Streaming Service (PSS); Progressive Download and Dynamic Adaptive Streaming over HTTP (3GP-DASH)".
[44]
TS 38.413: "NG Radio Access Network (NG-RAN); NG Application Protocol (NGAP)".
[45]
TS 38.300: "NR; Overall description; Stage-2".
[46]
TS 23.501: "System Architecture for the 5G System".
[47]
TS 37.340: "NR; Multi-connectivity; Overall description; Stage-2".
[48]
TS 33.501: "Security architecture and procedures for 5G System".
[49]
TS 23.285: "Technical Specification Group Services and System Aspects; Architecture enhancements for V2X services".
[50]
TS 38.331: "NR; Radio Resource Control (RRC); Protocol specification".
[51]
TS 23.502: "Procedures for the 5G System; Stage 2".
[52]
TS 38.401: "NG-RAN; Architecture description".
3 Definitions and abbreviations p. 19
3.1 Definitions p. 19
For the purposes of the present document, the terms and definitions given in TR 21.905 and the following apply.
A term defined in the present document takes precedence over the definition of the same term, if any, in TR 21.905.
ACL functionality:
A functionality controlling the access to network nodes. In case of Access Control Lists (ACL) functionality is applied in a network node the network node may only accept connections from other peer network nodes once the source addresses of the sending network node is already known in the target node.
CSG Cell:
an E-UTRAN cell broadcasting a CSG indicator set to true and a CSG identity. This cell operates in Closed Access Mode as defined in TS 22.220.
DAPS Handover:
as defined in TS 36.300.
DCN-ID:
DCN identity identifies a specific decicated core network (DCN).
Dual Connectivity:
as defined in TS 36.300.
Elementary Procedure:
S1AP consists of Elementary Procedures (EPs). An Elementary Procedure is a unit of interaction between eNBs and the EPC. These Elementary Procedures are defined separately and are intended to be used to build up complete sequences in a flexible manner. If the independence between some EPs is restricted, it is described under the relevant EP description. Unless otherwise stated by the restrictions, the EPs may be invoked independently of each other as standalone procedures, which can be active in parallel. The usage of several S1AP EPs together or together with EPs from other interfaces is specified in stage 2 specifications (e.g., TS 23.401 and TS 36.300).
An EP consists of an initiating message and possibly a response message. Two kinds of EPs are used:
eNB UE S1AP ID:
- Class 1: Elementary Procedures with response (success and/or failure).
- Class 2: Elementary Procedures without response.
- A signalling message explicitly indicates that the elementary procedure successfully completed with the receipt of the response.
- A signalling message explicitly indicates that the EP failed.
- On time supervision expiry (i.e., absence of expected response).
- One signalling message reports both successful and unsuccessful outcome for the different included requests. The response message used is the one defined for successful outcome.
as defined in TS 36.401.
Hybrid Cell:
an E-UTRAN cell broadcasting a CSG indicator set to false and a CSG identity. This cell operates in Hybrid Access Mode as defined in TS 22.220.
MME UE S1AP ID:
as defined in TS 36.401.
E-RAB:
as defined in TS 36.401.
E-RAB ID:
the E-RAB ID uniquely identifies an E-RAB for one UE.
Data Radio Bearer:
the Data Radio bearer transports the packets of an E-RAB between a UE and an eNB. There is a one-to-one mapping between the E-RAB and the Data Radio Bearer.
Secondary Cell Group:
as defined in TS 36.300.
UE-associated signalling:
When S1-AP messages associated to one UE uses the UE-associated logical S1-connection for association of the message to the UE in eNB and EPC.
UE-associated logical S1-connection:
The UE-associated logical S1-connection uses the identities MME UE S1AP ID and eNB UE S1AP ID according to definition in TS 23.401. For a received UE associated S1-AP message the MME identifies the associated UE based on the MME UE S1AP ID IE and the eNB identifies the associated UE based on the eNB UE S1AP ID IE. The UE-associated logical S1-connection may exist before the S1 UE context is setup in eNB.
3.2 Abbreviations p. 20
For the purposes of the present document, the abbreviations given in TR 21.905 and the following apply.
An abbreviation defined in the present document takes precedence over the definition of the same abbreviation, if any, in TR 21.905.
ACL
Access Control List
ARPI
Additional RRM Policy Index
BBF
Broadband Forum
CCO
Cell Change Order
CDMA
Code Division Multiple Access
CID
Cell-ID (positioning method)
CIoT
Cellular Internet of Things
CS
Circuit Switched
CSG
Closed Subscriber Group
CN
Core Network
DAPS
Dual Active Protocol Stacks
DCN
Dedicated Core Network
DL
Downlink
eAN
evolved Access Network
ECGI
E-UTRAN Cell Global Identifier
E-CID
Enhanced Cell-ID (positioning method)
eHRPD
evolved High Rate Packet Data
eNB
E-UTRAN NodeB
EN-DC
E-UTRA-NR Dual Connectivity
EP
Elementary Procedure
EPC
Evolved Packet Core
EPS
Evolved Packet System
E-RAB
E-UTRAN Radio Access Bearer
E-SMLC
Evolved Serving Mobile Location Centre
E-UTRAN
Evolved UTRAN
GBR
Guaranteed Bit Rate
GNSS
Global Navigation Satellite System
GUMMEI
Globally Unique MME Identifier
GTP
GPRS Tunnelling Protocol
HFN
Hyper Frame Number
HRPD
High Rate Packet Data
IAB
Integrated Access and Backhaul
IE
Information Element
IMEISV
International Mobile station Equipment Identity and Software Version number
IoT
Internet of Things
LAA
Licensed-Assisted Access
L-GW
Local GateWay
LHN
Local Home Network
LHN ID
Local Home Network ID
LIPA
Local IP Access
LPPa
LTE Positioning Protocol Annex
LWA
LTE-WLAN Aggregation
LWIP
LTE WLAN Radio Level Integration with IPsec Tunnel
MBSFN
Multimedia Broadcast multicast service Single Frequency Network
MDT
Minimization of Drive Tests
MME
Mobility Management Entity
MTSI
Multimedia Telephony Service for IMS
NAS
Non Access Stratum
NB-IoT
Narrowband IoT
NNSF
NAS Node Selection Function
NTN
Non Terrestrial Networks
OTDOA
Observed Time Difference of Arrival
PDCP
Packet Data Convergence Protocol
PLMN
Public Land Mobile Network
ProSe
Proximity Services
PS
Packet Switched
PSCell
Primary SCell
PWS
Public Warning System
RACS
Radio Capability Signalling optimization
RRC
Radio Resource Control
RIM
RAN Information Management
QMC
QoE Measurement Collection
QoE
Quality of Experience
SCTP
Stream Control Transmission Protocol
SCG
Secondary Cell Group
S-GW
Serving GateWay
SN
Sequence Number
SIPTO
Selected IP Traffic Offload
SIPTO@LN
Selected IP Traffic Offload at the Local Network
SSID
Service Set Identifier
S-TMSI
S-Temporary Mobile Subscriber Identity
SUL
Supplementary Uplink
TAC
Tracking Area Code
TAI
Tracking Area Identity
TEID
Tunnel Endpoint Identifier
UE
User Equipment
UE-AMBR
UE-Aggregate Maximum Bitrate
UL
Uplink
UTDOA
Uplink Time Difference of Arrival
V2X
Vehicle-to-Everything
WUS
Wake Up Signal
