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Satellite and Terrestrial Network for 5G

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Satellite and Terrestrial Network for 5G SaT5G (761413) D4.3 May 2020 Satellite and Terrestrial Network for 5G D4.3 Multi-link and Heterogeneous Transport - Analysis, Design and Proof of Concepts SaT5G (761413) D4.3 May 2020 Document History Version Date Modifications Source 0.1 28/06/18 Initial structure OA 0.8 17/10/18 Multi-Access state of the art and Multi-Access at 3GPP OA 0.85 1/11/19 QoS in Satcom TNO 0.9 10/11/19 MPTCP and MPQUIC BT 1.0 18/12/19 Prototypes, PEP and Standardization OA Topic ICT-07-2017 Project Title Satellite and Terrestrial Network for 5G Project Number 761413 Project Acronym SaT5G Contractual Delivery Date Aug 2019 (M27) Actual Delivery Date 30/12/2019 Contributing WP WP4.3 Project Start Date 01/06/2017 Project Duration 33 months Dissemination Level PU Editor OA Contributors SES, ADS, TNO, i2CAT SaT5G (761413) D4.3 May 2020 Name Organization Mamoutou Diarra OA Relja Djapic TNO M. (Miodrag) Djurica TNO Philip Eardley BT Thierry Masson OA Franck Messaoudi OA Luc Ottavj OA Boris Tiomela Jou ADS Simon Watts AVA Hamzeh Khalili I2CAT Ning Wang UoS SaT5G (761413) D4.3 May 2020 Table of Contents Table of Contents .................................................................................................................................. 4 List of Figures ....................................................................................................................................... 6 List of Tables ......................................................................................................................................... 7 List of Acronyms ................................................................................................................................... 8 Executive Summary ............................................................................................................................ 10 1 Introduction .................................................................................................................................. 11 2 Multi-access State-of-the-Art ....................................................................................................... 13 2.1 PEP ..................................................................................................................................... 13 2.2 Type of flows ....................................................................................................................... 15 2.3 Path Selection algorithms .................................................................................................... 15 2.4 Multipath Methods and protocols ........................................................................................ 16 2.4.1 Layer 3 ................................................................................................................................ 16 2.4.2 MPTCP ................................................................................................................................ 18 2.4.2.1 MPTCP Hybrid solution & proxy ...................................................................................... 20 2.4.2.2 Non-TCP traffic................................................................................................................ 20 2.4.2.3 Practical work on MPTCP and satellite systems ............................................................. 21 2.4.3 MPQUIC .............................................................................................................................. 22 2.4.3.1 QUIC ............................................................................................................................... 22 2.4.3.2 QUIC over satellite links .................................................................................................. 24 2.4.3.3 Multipath QUIC ................................................................................................................ 26 3 3GPP and Multi-Access ............................................................................................................... 27 3.1 AT3S Function .................................................................................................................... 27 3.2 AT3S architecture framework .............................................................................................. 27 3.2.1 Multi-access Sessions ......................................................................................................... 29 3.2.2 User Plane AT3S methods (AT3S Functions) ..................................................................... 30 3.2.3 User plane MPTCP method (MPTCP function) ................................................................... 31 3.2.4 AT3S limitations .................................................................................................................. 31 3.3 Backhaul Traffic Steering, Switching, and Splitting: BT3S .................................................. 31 3.3.1 5G UE using an AT3S or MPTCP function .......................................................................... 32 3.3.2 UE not using an AT3S or MPTCP function .......................................................................... 33 3.3.3 Regular hosts connected to the hybrid backhaul gateway .................................................. 33 3.4 Mapping AT3S to SaT5G architecture options .................................................................... 34 4 Satcom QOS in to 5G .................................................................................................................. 36 4.1 Connection setup ................................................................................................................ 36 4.2 QoS in 5G ........................................................................................................................... 36 4.2.1 QoS Profiles ........................................................................................................................ 37 4.2.2 QoS Rules ........................................................................................................................... 39 4.2.3 Legacy Satellite QoS (Class of Service) .............................................................................. 40 4.3 QoS in SaT5G hybrid backhaul ........................................................................................... 42 SaT5G (761413) D4.3 May 2020 5 5G multi-link prototypes ............................................................................................................... 44 5.1 MPTCP multi-link prototype ................................................................................................. 44 5.1.1 Setup ................................................................................................................................... 45 5.1.2 Results ................................................................................................................................ 47 5.2 MPQUIC multi-link prototype ............................................................................................... 48 5.2.1 Setup ................................................................................................................................... 48 5.2.2 Software .............................................................................................................................. 49 5.2.3 Test Method ........................................................................................................................ 49 5.2.4 Test Results ........................................................................................................................ 50 5.2.4.1 Sequential mode ............................................................................................................. 51 5.2.4.2 Parallel mode .................................................................................................................. 52 6 Standardization ............................................................................................................................ 54 7 Conclusion ................................................................................................................................... 55 Bibliography ........................................................................................................................................ 56 SaT5G (761413) D4.3 May 2020 List of Figures Figure 1-1 Inter-relationships with other works in SaT5G ................................................................... 12 Figure 2-1 TCP PEP in action ............................................................................................................. 14 Figure 2-2 Hybrid access using multiple paths between gateways [41] .............................................. 19 Figure 2-3 Comparison of TCP and QUIC protocol stacks.................................................................. 23 Figure 2-4 Structure of QUIC packet with long-header for IETF QUIC (version 14)............................ 24 Figure 2-5 Satellite system using split TCP with performance enhancing proxies .............................. 25 Figure 3-1 Non roaming AT3S architecture - initial high level view [8] ................................................ 28 Figure 3-2 MA PDU session................................................................................................................ 29 Figure 3-3 Interaction between AT3SF's of UE, SMF, PCF & UPF ..................................................... 30 Figure 3-4 AT3S
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