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TR 23.730 (SA2)
Study on extended architecture support for Cellular Internet of Things

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V14.0.0 (Wzip)  2016/12  83 p.

Rapporteur:  Mr. Jain, Puneet
See also:  CIoT-related TS/TR

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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1  ScopeWord-p. 8
2  References
3  Definitions and abbreviationsWord-p. 9
4  Architectural Considerations and AssumptionsWord-p. 10
5  Key Issues
5.1  Key Issue 1 - Authorization of use of Coverage Enhancement
5.2  Key Issue 2 - Reliable communication service between UE and SCEFWord-p. 11Up
5.3  Key Issue 3 - Inter RAT idle mode mobility to/from NB-IoT
5.4  Key Issue 4 - Reuse of existing multicast/broadcast architecture
5.5  Key Issue 5 - Reuse of Location Services architecture for Control Plane CIoT EPS optimization
5.6  Key Issue 6 - Inter UE QoS for NB-IoT Control Plane OptimisationWord-p. 17
5.7  Key Issue 7 - CN overload control for data transfer via Control Plane EPS CIoT Optimization

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