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Content for  TR 23.730  Word version:  14.0.0

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1  Scopep. 8

The present document studies and evaluates the architecture enhancement to support Cellular Internet of Things (CIoT). The scope includes NB-IoT, eMTC, and EC-GSM-IoT.
The study will consider architecture enhancements/simplifications in the following areas:
  • Support of authorization of use of Coverage Enhancement functionality;
  • Reliable communication service between UE and SCEF;
  • Inter-RAT idle mode mobility support for NB-IoT;
  • Review existing multicast/broadcast services architecture to ensure suitability for NB-IoT;
  • Review existing Location services architecture to ensure suitability for UEs using Control Plane CIoT EPS optimisation;
  • QoS differentiation between UEs using control plane EPS CIoT optimizations; and
  • CN overload protection for UE supporting control plane EPS CIoT optimizations.
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2  Referencesp. 8

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 22.368: "Service Requirements for Machine-Type Communications".
[3]
TS 23.682: "Architecture enhancements to facilitate communications with packet data networks and applications".
[4]
TS 23.246: "Multimedia Broadcast/Multicast Service (MBMS); Architecture and functional description".
[5]
TS 23.468: "Group Communication System Enablers for LTE (GCSE_LTE); Stage 2".
[6]
TS 26.346: "Multimedia Broadcast/Multicast Service (MBMS); Protocols and codecs".
[7]
TS 23.271: "Functional stage 2 description of Location Services (LCS)".
[8]
TS 23.401: "General Packet Radio Service (GPRS) enhancements for Evolved Universal Terrestrial Radio Access Network (E-UTRAN) access".
[9]
RFC 7252,  The Constrained Application Protocol (CoAP), https://datatracker.ietf.org/doc/rfc7252/
[10]
RFC 7641,  Observing Resources in the Constrained Application Protocol (CoAP), https://datatracker.ietf.org/doc/rfc7641/
[11]
draft-ietf-core-block-21,  Block-wise transfers in CoAP, https://datatracker.ietf.org/doc/draft-ietf-core-block/
[12]
draft-ietf-core-http-mapping-13,  Guidelines for HTTP-to-CoAP Mapping Implementations, https://datatracker.ietf.org/doc/draft-ietf-core-http-mapping/
[13]
TS 29.171: "Location Services (LCS); LCS Application Protocol (LCS-AP) between the Mobile Management Entity (MME) and Evolved Serving Mobile Location Centre (E-SMLC); SLs interface".
[14]
TS 36.355: "Evolved Universal Terrestrial Radio Access (E-UTRA); LTE Positioning Protocol (LPP)".
[15]
TS 36.305: "Stage 2 functional specification of User Equipment (UE) positioning in E-UTRAN".
[16]
OMA TS OMA-TS-ULP-V2_0_3: "User Plane Location Protocol", Approved Version 2.0.3, May 2016".
[17]
3GPP S2-163230: "Reply LS on Maximum upper layer data packet size for NB-IoT".
[18]
TS 36.300: "Evolved Universal Terrestrial Radio Access Network (E-UTRAN); Overall description; Stage 2".
[19]
TS 24.301: "Non-Access-Stratum (NAS) protocol for Evolved Packet System (EPS)".
[20]
TS 36.455: "Evolved Universal Terrestrial Radio Access (E-UTRA); LTE Positioning Protocol A (LPPa)".
[21]
TS 24.008: "Mobile radio interface Layer 3 specification; Core network protocols; Stage 3".
[22]
TS 29.172: "Location Services (LCS); Evolved Packet Core (EPC) LCS Protocol (ELP) between the Gateway Mobile Location Centre (GMLC) and the Mobile Management Entity (MME); SLg interface".
[23]
OMA TS OMA-TS-MLP-V3_5: "Mobile Location Protocol".
[24]
TS 24.080: "Mobile radio interface layer 3 Supplementary services specification; Formats and coding".
[25]
TS 23.122: "Non-Access-Stratum (NAS) functions related to Mobile Station (MS) in idle mode".
[26]
TS 36.413: "Evolved Universal Terrestrial Radio Access Network (E-UTRAN); S1 Application Protocol (S1AP)".
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3  Definitions and abbreviationsp. 9

3.1  Definitionsp. 9

For the purposes of the present document, the terms and definitions given in TR 21.905 and TS 22.368 apply.

3.2  Abbreviationsp. 9

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.
AS
Access Stratum
CoAP
Constrained Application Protocol
CP
Control Plane
E-SMLC
Enhanced Serving Mobile Location Centre
eDRX
Extended idle mode DRX
ELP
EPC LCS Protocol
GMLC
Gateway Mobile Location Centre
H-GMLC
Home GMLC
M2M
Machine-to-Machine
LPP
LTE Positioning Protocol
LPPa
LPP Annex
MLP
Mobile Location Protocol
MQTT
MQ Telemetry Transport
MQTT-SN
MQ Telemetry Transport for Sensor Networks
MTC
Machine Type Communications
MO-LR
Mobile Originated Location Request
MT-LR
Mobile Terminated Location Request
NI-LR
Network Initiated Location Request
CIoT
Cellular Internet of Things
PSM
Power Saving Mode
R-GMLC
Requesting GMLC
RSRP
Reference Signal Received Power
RSRQ
Reference Signal Received Quality
OTDOA
Observed Time Difference of Arrival
SLP
SUPL Location Platform
SUPL
Secure User Plane Location
UP
User Plane
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4  Architectural Considerations and Assumptionsp. 10


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