Content for  TR 23.720  Word version:  13.0.0

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1  Scopep. 8

The present document studies and evaluates the architecture enhancement to support ultra-low complexity, power constrained, and low data-rate 'Internet of Things' devices.
The study will consider architecture enhancements/simplifications in the following areas:
  • Support of highly efficient handling of frequent and infrequent small data transmissions (e.g. based on the traffic model in TR 45.820) with minimised overhead for system signalling without compromising e.g. security.
  • Support of power consumption optimisations and/or using existing ones that have been developed for EPS or GPRS.
  • Assessing simplification of Mobility Management and Session Management procedures.
  • Support of paging optimisations for UEs requiring coverage enhancements.
The present document will also consider system architecture alternatives to address the points above.

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.
TR 21.905: "Vocabulary for 3GPP Specifications".
TS 22.368: "Service Requirements for Machine-Type Communications".
TS 23.682: "Architecture enhancements to facilitate communications with packet data networks and applications".
TR 45.820: "Cellular System Support for Ultra Low Complexity and Low Throughput Internet of Things".
TR 36.888: "Study on provision of low-cost Machine-Type Communications (MTC) User Equipments (UEs) based on LTE".
TR 23.887: "Study on Machine-Type Communications (MTC) and other mobile data applications communications enhancements".
TS 24.301: "Non-Access-Stratum (NAS) protocol for Evolved Packet System (EPS); Stage 3".
TS 23.401: "General Packet Radio Service (GPRS) enhancements for Evolved Universal Terrestrial Radio Access Network (E-UTRAN) access".
TS 23.040: "Technical realization of the Short Message Service (SMS)".
RFC 4944:  "Transmission of IPv6 Packets over IEEE 802.15.4 Networks".
RFC 6282:  "Compression Format for IPv6 Datagrams over IEEE 802.15.4-Based Networks".
RFC 6775:  "Neighbor Discovery Optimization for IPv6 over Low-Power Wireless Personal Area Networks (6LoWPANs)".
TS 23.060: "General Packet Radio Service (GPRS); Service description; Stage 2".
TS 24.011: "Point-to-Point (PP) Short Message Service (SMS) support on mobile radio interface".
TS 33.401: "3GPP System Architecture Evolution (SAE); Security architecture".
TS 36.323: "Evolved Universal Terrestrial Radio Access (E-UTRA); Packet Data Convergence Protocol (PDCP) specification".

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, TS 22.368, 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.
Cellular IoT (CIoT):
Internet of Things using 3GPP technology.
a 3GPP Radio Access Technology for Cellular IoT supporting the traffic models defined in clause 4.3 and ultra-low complexity, power constrained, and low data-rate 'Internet of Things' devices.

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.
Cellular IoT
CIoT Serving Gateway Node
Discontinuous Reception
Internet of Things
Machine Type Communications

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