Notes - MIECT
Comunicações Móveis
Notes - MIECT
Comunicações Móveis
  • Comunicações Móveis
  • The Communication Network
    • The Phone Network
    • The Internet
    • The Mobile Network
  • Wireless Systems
    • Wireless Systems
    • Mobile Hassles
    • Device Issues
    • Why is mobile hard?
  • Physical Layer
    • Classifications of Transmission Media
    • Wireless
    • Radio Transmission Impairments
    • Time-Domain View
    • Propagation Degrades
    • Propagation Mechanisms
    • Redundancy
  • Satellite Networks
    • Satellites
    • Satellite Networks
      • GEO - Geostationary Orbit
      • NGSO - Non Geostationary Orbits
    • Routing
  • Mobile Networks
    • Connections and structures
    • Cell
    • Wireless networks
    • 802.11
    • Infrastructure vs Ad Hoc Mode
    • Data Flow Examples
    • Physical layer
    • MAC
      • Multi-bit Rate
      • MAC Layer
      • Carrier Sense Multiple Access
      • Some More MAC Features
    • How does a station connect to an Access Point?
      • IEEE 802.11 Mobility
    • How to extend range in Wi- Fi?
      • IEEE 1905.1 standard, Convergent Digital Home Network for Heterogeneous Technologies
  • Bluetooth, Wireless Sensor Networks, ZigBee
    • Bluetooth
      • Piconets
        • Device Discovery Illustrated
        • Paging
      • Scatternet
      • Bluetooth Stack
        • Baseband in Bluetooth
        • Adaptation protocols
      • Profiles and security
        • Bluetooth
        • Link keys in a piconet
      • 802.15.x
        • Bluetooth Networking Encapsulation Protocol
        • Bluetooth 4.0: Low Energy
          • Device Modes
          • Link Layer Connection
          • How low can the energy get?
          • BLE and GAP
    • Wireless Sensor Networks
      • MIoT and HIoT are different
      • Types of Wireless Networks
      • Wireless Sensor Network
      • 802.15.4 and Zigbee
      • 802.15.4 / ZigBee Architecture
        • IEEE 802.15.4 MAC
        • Channel Access Mechanism
        • Association procedures
        • ZigBee
        • ZigBee and BLE
  • Cellular Networks
    • Wireless cellular network
    • Wide Area Wireless Sensor Networks (WWSN)
      • LTE-M
      • NB-IoT
      • Spectrum & Access
      • Cellular technologies
      • LoRa
      • The Things Network
    • Technological waves
    • 1G - Mobile voice
    • 2G - Global System for Mobile Communications (GSM)
    • 2.5G - General Packet Radio Service (GPRS)
    • 3G - Universal Mobile Telecommunication System
      • Multiplexing mechanisms
      • SIP Protocol
      • Services in IMS
    • 4G - Long Term Evolution/Evolved Packet Core (LTE/EPC)
      • Long Term Evolution (LTE)
    • 5G
      • Example of verticals
      • 3GPP Releases detail
      • Technologies
      • New Radio is required
      • System architecture
      • Non-stand Alone (NSA)
      • Networks deployment
      • Protocol stacks
      • Procedures
      • QoS Model
      • Mobility in 5G
      • Distributed cloud: Edge Computing and 5G
      • Slicing
    • 6G
  • Software and Virtualization Technologies in Mobile Communication Networks
    • Network Function Virtualization
    • Management and Orchestration
    • Software Defined Networking
      • How to “direct” the controller?
      • Emulation
      • Programming Protocol-Independent Packet Processors (P4)
    • OpenRAN
    • Multi-access Edge Computing
    • Network Automation
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On this page
  • Open RAN vs OpenRAN
  • Contemporary RAN
  • Virtualized RAN (vRAN) approach
  • Benefits
  • Challenges
  • Ecossystem and Business Roles
  • Logical Open RAN Architecture
  • Non-RT RIC.
  • Near-RT RIC.
  • O-DU.
  • O-CU-CP and O-CU-UP
  • O-RU
  • O-Cloud
  1. Software and Virtualization Technologies in Mobile Communication Networks

OpenRAN

PreviousProgramming Protocol-Independent Packet Processors (P4)NextMulti-access Edge Computing

Last updated 2 years ago

Open RAN vs OpenRAN

Open RAN (or O-RAN)

  • From the O-RAN Alliance.

    • Aims to define open interfaces of split RAN architecture.

    • Open and Virtualized RAN (vRAN).

OpenRAN.

  • From Telecom Infra Project.

    • Aims to disintegrate mobile network RAN architecture.

    • By having multi-vendor interoperable solutions.

    • Built on general purpose COTS.

  • Aims to speed up adoption and deployments

  • Uses O-RAN’s interfaces.

  • Works with 3GPP, ONF, ...

Contemporary RAN

Virtualized RAN (vRAN) approach

Benefits

  • Avoid Vendor lock-in.

  • Reduce cost.

  • Quick time to market.

  • Best of breed.

  • Spur Innovation.

  • Participate in HW/SW development.

Challenges

  • New HW and SW requirements.

  • Interoperability.

  • Complex automation.

  • Virtualization security.

  • Reliability and Availability.

  • High fronthaul bandwidth low-latency.

Ecossystem and Business Roles

Logical Open RAN Architecture

RIC → RAN Intelligent Controller.

Non-RT RIC.

  • FCAPS of O-RAN network functions.

    • Fault, configuration, accounting, performance and security.

  • RAN optimization in Non-RT (>1 second).

Near-RT RIC.

  • Enables near-time control and optimization of O-RAN nodes (10ms to 1 sec).

    • O-CU

      • Centralized Unit.

    • O-DU

      • Distributed Unit.

  • Here, decision latency is very important and thus has to be closer to the ran nodes.

O-DU.

  • Open Distributed Unit.

  • Terminates the fronthaul interface.

  • Logical node hosting High-PHY layers based on a lower layer functional splut.

O-CU-CP and O-CU-UP

  • O-RAN Central Unit.

  • Control Plane (CP).

  • User Plane (UP).

  • CP.

    • Hosts the RRC (Radio Resource Control) and the control plane part of the PDCP (Packet Data Convergence) protocol.

  • UP hosts the user plane part of the PDCP protocol and the SDAP (Service Data Adaptation) protocol.

O-RU

  • O-RAN Radio Unit.

  • Hosts Low-PHY layers and RF processing.

O-Cloud

  • The generic cloud infrastructure.