Introduction

WG5

Open F1/W1/E1/X2/Xn interfaces

Profile 3GPP-specified higher layer split interfaces to be truly inter-operable between vendors (focus on X2, F1, Xn, E1 and W1 interfaces), specify interoperability testcases, and specify requirements for operation & maintenance for O-DU, O-CU-CP and O-CU-UP. WG5 also profiles user plane procedures and functions and defines a transport specification to enhance openness for the network elements within its scope (higher layer split interfaces).

Profile specifications

• Describe e.g., definition of IEs, general behavior of each node, etc. which is not sufficiently specified in 3GPP specifications

NOTE: The profiles discussed by WG5 shall not violate 3GPP specifications

O&M requirements

• Collect and specify O&M related requirements resulting from control- and user-plane related activities (e.g. alarms, configurations, monitoring, performance counters) and communicate them to other WGs (specifically to WG10 for the O1 interface)

IOT specification

• Specification for inter-operability testing of higher layer split profiled use cases

Potential enhancements of 3GPP specifications (F1/E1/W1/X2/Xn)

• Gap analysis between 3GPP spec and fully operable multi-vendor spec

• If needed (i.e. in critical cases) identify and propose functions to be added to the 3GPP specifications (O-RAN participating companies may submit proposals to 3GPP)

NTT DOCOMO, INC. (DCM): Ryusuke Matsukawa

Rakuten Mobile Inc (RMI): Veluchamy Lingasamy

Ericsson (ERI): Kurt Essigmann