Time-Sensitive Networking for Fronthaul in 5G Architecture
Explore the incorporation of Time-Sensitive Networking (TSN) in 5G Fronthaul architecture, detailing the functional split of radio base stations, collaboration with CPRI, simplified 5G architecture layouts, use cases, and the P802.1CM TSN for Fronthaul project. Discover the development of standard TSN profiles to facilitate the transport of Fronthaul streams within a bridged network setup.
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July 2016 P802.1CM Time-Sensitive Networking for Fronthaul Date: 2016-07-26 Authors: doc.: IEEE 802.11-14/1003r0 Name J nos Farkas Affiliations Ericsson Address Irinyi J zsef u. 4-20 1117 Budapest Hungary Phone +3614377100 email janos.farkas@ericsson.com Submission Slide 1 J nos Farkas, Ericsson
July 2016 doc.: IEEE 802.11-14/1003r0 Agenda Fronthaul IEEE P802.1CM Scope, goals Collaboration with the Common Public Radio Interface (CPRI) Cooperation Current status Summary Submission Slide 2 J nos Farkas, Ericsson
July 2016 doc.: IEEE 802.11-14/1003r0 Simplified 5G Architecture backhaul Radio Base Station (RBS) Submission Slide 3 J nos Farkas, Ericsson
July 2016 doc.: IEEE 802.11-14/1003r0 Simplified 5G Architecture with Fronthaul Radio Equipment (RE) Radio Equipment Control (REC) fronthaul backhaul baseband Radio Base Station (RBS) Submission Slide 4 J nos Farkas, Ericsson
July 2016 doc.: IEEE 802.11-14/1003r0 Fronthaul Radio Base Station is functionally split into Radio Equipment (RE) and Radio Equipment Control (REC) The Common Public Radio Interface (CPRI) is the most common radio interface for Fronthaul Remote radio site Fronthaul, e.g., CPRI Backhaul RE REC Remote radio site Fronthaul Backhaul RE REC Submission Slide 5 J nos Farkas, Ericsson
July 2016 doc.: IEEE 802.11-14/1003r0 Use Cases, e.g., Remote radio site Base station site Fronthaul Main-Remote RE REC Small Cells dense Fronthaul network indoor deployments too Base station site Small Cell Small Cell REC Fronthaul Small Cell Base station site REC Small Cell Small Cell Centralized RAN (C-RAN) extensive Fronthaul network indoor deployments too Small Cell C-RAN site Fronthaul Remote radio site Remote radio site REC Remote radio site RRU RRU Submission Slide 6 J nos Farkas, Ericsson RE
July 2016 doc.: IEEE 802.11-14/1003r0 P802.1CM TSN for Fronthaul Project RE1 Bridged network for Fronthaul REC1 RE2 RE3 REC2 Develop standard TSN profiles for Fronthaul in order to enable the transport of Fronthaul streams in a bridged network A Profile is a set of feature and option selections that specifies aspects of bridge and end station operation, and states the conformance requirements for support of a specific class of user applications e.g., 802.1BA Audio Video Bridging Systems; also provides architecture Submission Slide 7 J nos Farkas, Ericsson
July 2016 doc.: IEEE 802.11-14/1003r0 P802.1CM TSN for Fronthaul Document Collects requirements for Fronthaul networks CPRI functional decomposition requirements The different CPRI information flows are supported separate from each other CPRI as is over Ethernet is NOT in scope Placeholder for further Fronthaul requirements Provides guidance for meeting Fronthaul requirements, which includes Selects features, e.g. 802.1 TSN features, in order to build networks capable of transmitting Fronthaul streams, e.g., the requirements of the CPRI information flows Describes how the selected features and components can be combined, configured and used in order to meet Fronthaul requirements Submission Slide 8 J nos Farkas, Ericsson
July 2016 doc.: IEEE 802.11-14/1003r0 Radio Base Station Split Current focus of P802.1CM is the functional split specified by CPRI 7.0 Further splits are possible Current split No split Possible splits any combinations PDCP: Packet Data Convergence Protocol PDCP RLC MAC PHY PDCP RLC MAC PHY Radio Layer 3 Layer 3 Layer 3 RLC: Radio Link Controller Layer 2 Layer 2 Layer 2 Layer 1 Layer 1 Layer 1 Radio Radio Radio Radio It is in scope of 802.1CM to define profile(s) for further split(s) Submission Slide 9 J nos Farkas, Ericsson
July 2016 doc.: IEEE 802.11-14/1003r0 P802.1CM Current Status Collaboration with CPRI Cooperation 1st Task Group ballot on D0.4 Gathers requirements for CPRI information flows IQ data (IQ: In-Phase and Quadrature modulation) Control and Management (C&M) Synchronization Collects bridge and synchronization functions to meet req. Possible synchronization approaches Bridged network characteristics Bridge functions, e.g., frame preemption [802.3br and 802.1Qbu] Early version of two profiles Profile A: strict priority Profile B: strict priority and frame preemption Work in progress! Slide 10 http://www.ieee802.org/1/pages/802.1cm.html Submission J nos Farkas, Ericsson
July 2016 doc.: IEEE 802.11-14/1003r0 Summary Fronthaul interconnects functionally split components of a Radio Base Station Current P802.1CM focus is the radio base station split specified by CPRI 7.0 Profile(s) for further splits are also in scope of P802.1CM P802.1CM specifies packet transport for Fronthaul Collaboration with CPRI Cooperation Collects Fronthaul requirements Specifies architecture for packet transport of Fronthaul, i.e., Ethernet-based Submission Slide 11 J nos Farkas, Ericsson
