--- /dev/null
+.. Copyright (c) 2019 Intel
+..
+.. Licensed under the Apache License, Version 2.0 (the "License");
+.. you may not use this file except in compliance with the License.
+.. You may obtain a copy of the License at
+..
+.. http://www.apache.org/licenses/LICENSE-2.0
+..
+.. Unless required by applicable law or agreed to in writing, software
+.. distributed under the License is distributed on an "AS IS" BASIS,
+.. WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+.. See the License for the specific language governing permissions and
+.. limitations under the License.
+
+.. |br| raw:: html
+
+ <br />
+
+O-DU Low Project Introduction
+================================
+
+.. contents::
+ :depth: 3
+ :local:
+
+The O-DU low project focus on the baseband PHY Reference Design, which uses Xeon® series Processor with Intel |br|
+Architecture. This 5GNR Reference PHY consists of a L1 binary \
+and three kinds of interfaces which are validated on a |br|
+Intel® Xeon® SkyLake / CascadeLake platforms and demonstrates the capabilities of the software running different \
+5GNR L1 features. It implements the relevant functions described in [3GPP TS 38.211, 212, 213, 214 and 215].
+
+The L1 has three \
+interfaces to communicate with other network functions as described below:
+
+* Interface between L1 and Front Haul, it adopts the WG4 specification for the CUS plane communication.
+
+* Interface between O-DU Low and O-DU High, it adopts the FAPI interface according to the WG8 AAL specification.
+
+* Interface between O-DU Low and accelerator, DPDK BBDev was adopted as original contribution, it will follow the WG6 definition after the WG6 specification is finalized.
+
+The following figure shows the ORAN O-CU, O-DU and O-RU blocks for a gNB implemetation. The O-DU Low projects implements the FAPI interface by a 5G FAPI TM module, the OFH-U and OFH-C
+by means of the FHI Library and the functionality of the High-PHY and a test MAC are available through github in the form of a binary blob for the current release. For the details refer to the Running L1 and Testmac section of this document
+
+
+.. image:: images/ORAN_OCU_ODU_ORU.jpg
+ :width: 600
+ :alt: Figure1.Oran OCU ODU and ORU Block Diagram
+
+Scope
+-----
+
+In this O-DU Low document, the details on how the build the modules supporting each interface, how to run the L1 and associated components, the architecture for each
+interface implementation and the release notes that describe each component release details are provided.
+
+Intended Audience
+-------------------
+
+The intended audience for this document are software engineers and system architects who design and develop |br|
+5G systems using the O-RAN Specifications.
+
+Terminology
+-------------
+
+Table 1. Terminology
+
++--------+------------------------------------------------------------+
+| Term | Description |
++--------+------------------------------------------------------------+
+| 5G NR | Fifth Generation New Radio |
++--------+------------------------------------------------------------+
+| BOM | Bill of Materials |
++--------+------------------------------------------------------------+
+| CP | Cyclic Prefix |
++--------+------------------------------------------------------------+
+| DPDK | Data Plane Development Kit |
++--------+------------------------------------------------------------+
+| gNB | Next-generation NodeB also named as Base Station |
++--------+------------------------------------------------------------+
+| HARQ | Hybrid Automatic Repeat Request |
++--------+------------------------------------------------------------+
+| HW | Hardware |
++--------+------------------------------------------------------------+
+| IOT | Inter-Operability Testing |
++--------+------------------------------------------------------------+
+| IQ | In-band and Quadrature |
++--------+------------------------------------------------------------+
+| NIC | Network Interface Controller |
++--------+------------------------------------------------------------+
+| O-DU | O-RAN Distributed Unit: a logical node hosting |
+| | RLC/MAC/High-PHY layers based on a lower layer functional |
+| | split. |
++--------+------------------------------------------------------------+
+| O-RU | O-RAN Radio Unit: a logical node hosting Low-PHY layer and |
+| | RF processing based on a lower layer functional split. |
+| | This is similar to 3GPP’s “TRP” or “RRH” but more specific |
+| | in including the Low-PHY layer (FFT/IFFT, PRACH |
+| | extraction). |
++--------+------------------------------------------------------------+
+| PDCCH | Physical Downlink Control Channel |
++--------+------------------------------------------------------------+
+| PDSCH | Physical Downlink Shared Channel |
++--------+------------------------------------------------------------+
+| PRACH | Physical Random Access Channel |
++--------+------------------------------------------------------------+
+| PUCCH | Physical Uplink Control Channel |
++--------+------------------------------------------------------------+
+| PUSCH | Physical Uplink Shared Channel |
++--------+------------------------------------------------------------+
+| PTP | Precision Time Protocol |
++--------+------------------------------------------------------------+
+| RA | Random Access |
++--------+------------------------------------------------------------+
+| RAN | Radio Access Network |
++--------+------------------------------------------------------------+
+| RB | Resource Block |
++--------+------------------------------------------------------------+
+| RE | Resource Element |
++--------+------------------------------------------------------------+
+| RU | Radio Unit |
++--------+------------------------------------------------------------+
+| SR-IOV | Single Root Input/Output Virtualization |
++--------+------------------------------------------------------------+
+| SW | Software |
++--------+------------------------------------------------------------+
+| ToS | Top of the Second |
++--------+------------------------------------------------------------+
+| UE | User Equipment |
++--------+------------------------------------------------------------+
+| UL | Uplink |
++--------+------------------------------------------------------------+
+| VIM | Virtual Infrastructure Manager |
++--------+------------------------------------------------------------+
+| VLAN | Virtual Local Area Network |
++--------+------------------------------------------------------------+
+| xRAN | Extensible Radio Access Network |
++--------+------------------------------------------------------------+
+
+Reference Documents
+-------------------
+
+Table 2. Reference Documents
+
++----------------------------------+----------------------------------+
+| Document or Reference | Document No./ |
+| | Location |
++----------------------------------+----------------------------------+
+| 3GPP\* specification series | http://www.3 |
+| | gpp.org/DynaReport/38-series.htm |
++----------------------------------+----------------------------------+
+| Wolf Pass Server Documentation | https://ark.intel.com/p |
+| | roducts/codename/80739/Wolf-Pass |
++----------------------------------+----------------------------------+
+| *Intel® C++ Compiler |https://software.intel.com/en-us/ |
+| system Studio XE* |system-studio/choose-download |
++----------------------------------+----------------------------------+
+| DPDK documentation | http://dpdk.org/doc/guides/ |
++----------------------------------+----------------------------------+
+| O-RAN Fronthaul Working Group | `https://www.o-ran.org/ |
+| Control, User and | specifications <https:// |
+| Synchronization Plane | www.o-ran.org/specifications>`__ |
+| Specification | |
+| (ORAN-WG4.CUS.0-v02.00) | |
++----------------------------------+----------------------------------+
+
+
+
Code Review / o-du / phy.git / blobdiff