1. omniran-14-0030-00-0000 1 Backhaul representation in OmniRAN SDN model Date: 2014-03-19 Authors: NameAffiliationPhoneEmail Max RiegelNSN+49 173 293 8240maximilian.riegel@nsn.com Notice: This document does not represent the agreed view of the OmniRAN EC SG. It represents only the views of the participants listed in the ‘Authors:’ field above. It is offered as a basis for discussion. It is not binding on the contributor, who reserve the right to add, amend or withdraw material contained herein. Copyright policy: The contributor is familiar with the IEEE-SA Copyright Policy.http://standards.ieee.org/IPR/copyrightpolicy.html Patent policy: The contributor is familiar with the IEEE-SA Patent Policy and Procedures: and.http://standards.ieee.org/guides/bylaws/sect6-7.html#6http://standards.ieee.org/guides/opman/sect6.html#6.3 Abstract The presentation provides proposes that backhaul is not considered as a separate functional entitiy in the OmniRAN SDN model, but treated internally to the access network.

2. omniran-14-0030-00-0000 2 Backhaul representation in OmniRAN SDN model Max Riegel (NSN)

3. omniran-14-0030-00-0000 3 Terminal Internet Core Network(s) SDN-based OmniRAN Use Case Reference Point Mappings Core Operator C Access Network Backhaul SDN Controller Data path Control path Access 3 Access Abstraction Multiple Cores sharing Access Network Access Abstraction Data and Control plane separation Central control R1 R3 R2 Core Operator B Core Operator A Access Abstraction Access 1 Access 2 R4 R5 Access Abstraction Backhaul Abstraction AAA

4. omniran-14-0030-00-0000 4 Transport Plane User Plane Dedicated Backhaul by Separation of User Plane and Transport Plane Separation of user plane and transport plane in the access network leads to the definition of a ‘backhaul’ STACtrl/CoreGWAP/BS R1R3 PHY DLL ETH IP GRE ETH PHY ETH IP PHY ETH

5. omniran-14-0030-00-0000 5 Data Path Integrating user plane and transport plane into one networking layer dissolves the ‘backhaul’. OmniRAN defines an access network without separation of user plane and transport plane in isolated networking layers. Backhaul can be considered integrated into the data path in OmniRAN. STACtrl/CoreAP/BS PHY DLL IP R1R3 PHY DLL