TR 23.720 ★
Study on Architecture enhancements
for Cellular Internet of Things

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V13.0.0 (Wzip) 2016/03 94 p.

Rapporteur:: Mr. Jain, Puneet Intel Corporation (UK) Ltd

essential Table of Contents for TR 23.720 Word version: 13.0.0

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2 References Word‑p. 8

3 Definitions and abbreviations Word‑p. 9

4 Architectural Considerations and Assumptions Word‑p. 9

4.1 Architectural Reference Model for Cellular IoT Word‑p. 9

4.2 Architectural assumptions for Cellular IoT system Word‑p. 9

4.3 Traffic Models for Cellular IoT Word‑p. 10

5 Key Issues Word‑p. 10

5.1 Key Issue 1 - Architecture Reference Model for Cellular IoT Word‑p. 10

5.2 Key Issue 2 - Efficient support of infrequent small data transmission for Cellular IoT Word‑p. 11

5.3 Key Issue 3 - Efficient support of tracking devices using small data transmission for Cellular IoT Word‑p. 11

5.4 Key Issue 4 - Support of efficient Paging area management for Cellular IoT Word‑p. 12

5.5 Key Issue 5: Selection of CIoT-EPC Dedicated Core Network Word‑p. 13

5.6 Key Issue 6 - Support of Non IP data Word‑p. 13

5.7 Key Issue 7 - Support of SMS Word‑p. 13

5.8 Key Issue 8 - Control of small data misuse Word‑p. 13

5.9 Key Issue 9 - Optimised Support of SMS transmission Word‑p. 13

5.10 Key Issue 10 - Authorization of use of Coverage Enhancement Word‑p. 14

5.11 Key Issue 11 - Header compression enhancements for CIOT Word‑p. 14

6 Solutions Word‑p. 14

6.1 Solution 1: Lightweight CN architecture for CIoT Word‑p. 14

6.2 Solution 2: Infrequent small data transmission using pre-established NAS security Word‑p. 18

6.3 Solution 3: Connectionless small data transmission with immediate return to idle Word‑p. 24

6.4 Solution 4: Non-IP small data transmission via MTC-IWF Word‑p. 28

6.4a Solution 4a: non-IP small data transmission via SCEF Word‑p. 32

6.4b Solution 4b: Non-IP small data transmission via SCEF with minimized load to HSS Word‑p. 33

6.5 Solution 5: UE state transition signalling reduction Word‑p. 36

6.6 Solution 6: User plane based solution with enhanced ECM-CONNECTED state Word‑p. 42

6.7 Solution 7: Paging for static and dynamic coverage enhancement (CE) level Word‑p. 51

6.8 Solution 8: Cell based paging area update for efficient paging area management Word‑p. 53

6.9 Solution 9: UE provided indication for selection of CIoT-EPC DCN or EPC DCN Word‑p. 55

6.10 Solution 10: Support for "non IP" PDN types Word‑p. 56

6.11 Solution 11: SMS over PS without combined attach and default PDN connection Word‑p. 58

6.12 Solution 12: Solution on simplification of MM and SM procedures Word‑p. 59

6.13 Solution 13: RRC FastConnect for Service Request Word‑p. 63

6.14 Solution 14: Setup of CIoT PDN connection with minimum NAS Word‑p. 66

6.15 Solution 15: Support for "non IP" small data by UDP/IP encapsulation over SGi Word‑p. 69

6.16 Solution 16: Optimised SMS over PS without combined attach and default PDN connection Word‑p. 71

6.17 Solution 17: Optimized SMS relay for CIoT Word‑p. 76

6.18 Solution 18: User plane based solution with AS information stored in RAN Word‑p. 79

6.19 Solution 19: Header compression at C-SGN Word‑p. 87

7 Overall Evaluation Word‑p. 92

8 Conclusions Word‑p. 92

$ Change History Word‑p. 94

TR 23.720 ★ Study on Architecture enhancements for Cellular Internet of Things

essential Table of Contents for TR 23.720 Word version: 13.0.0

TR 23.720 ★
Study on Architecture enhancements
for Cellular Internet of Things