Centralized RAN (C-RAN): What is It and Why You Should Care

Download Centralized RAN (C-RAN): What is It and Why You Should Care

Post on 30-Oct-2015

2.406 views

Category:

Documents

4 download

Embed Size (px)

DESCRIPTION

C-RAN is just another form of Small Cell. The main C-RAN challenge is fronthaul. But fronthaul makes it difficult to reach RRU locations (mostly urban), is dependent of non-traditional deployments (e.g., street furniture, non-tower) and CPRI interfaces creates new challenges (e.g., capacity, latency, management). Therefore, new innovations in wireless transport will be required to make fronthaul and C-RANs feasible.

TRANSCRIPT

  • Centralized RAN

    (C-RAN)

    WHAT IS IT?

    AND WHY SHOULD YOU CARE?

    Paul Kennard, CTO

    June 13, 2013

  • AVIAT NETWORKS

    THE DATA STORM

    low or stable average revenue per user LOW ARPU

    NEW DEVICES

    NETWORK COSTS

    NEW CONSUMERS explosion of smart phones, tablets

    and other mobile devices

    increased network CAPEX and OPEX

    5 billion consumers will have

    access to internet

  • AVIAT NETWORKS

    DENSER NETWORKS

    This has several problems:

    How to meet the required coverage

    and capacity?

    How to deal with interference?

    How to manage increased complexity:

    To increase spectral efficiency?

    To manage customers data?

    To deal with higher CAPEX and

    OPEX?

    the only way to deal with the data storm is to have denser wireless networks with ever increasing spectral efficiency

  • AVIAT NETWORKS

    STRATEGIES FOR DENSER NETWORKS

    RAN DECENTRALIZATION (HetNet) TRADITIONAL MACRO CELLS

    SMALL CELLS, SON

    BACKHAUL

    RAN CENTRALIZATION (C-RAN) DISTRIBUTED ANTENNAS (DAS)

    REMOTE RADIO HEADS (RRH)

    FRONTHAUL

    WiFi OFFLOAD OFFLOAD

  • AVIAT NETWORKS

    CENTRALIZED RAN (C-RAN) TERMINOLOGY

  • AVIAT NETWORKS

    Source: NGMN

    C-RAN IMPLEMENTATION JUST ANOTHER FORM OF SMALL CELL

    TRADITIONAL MACRO CELL DEPLOYMENT CELL SPLIT USING FRONT HAUL

  • AVIAT NETWORKS

    ADVANTAGES OF C-RAN

    Resource pooling

    Greener infrastructure (re-use)

    Base station virtualization

    Simplified management and operation

    Coordination for interference mitigation (ICIC)

    Multi technology support

    No GPS in each remote site

  • AVIAT NETWORKS

    MAIN C-RAN CHALLENGE IS FRONTHAUL

    Difficult to reach RRU locations

    (mostly urban)

    Non traditional deployments

    (street furniture, non-tower)

    CPRI interface creates new challenges

    (capacity, latency, management, etc)

    PLUS FIBER IS NOT EVERYWHERE,

    AND NOT FOR FREE SO WIRELESS SOLUTIONS FOR

    FRONTHAUL WILL BE NEEDED

    PLUS FIBER IS NOT EVERYWHERE,

    AND NOT FOR FREE SO WIRELESS SOLUTIONS FOR

    FRONTHAUL WILL BE NEEDED

  • AVIAT NETWORKS

    BUT CAPACITY AND LATENCY REQUIREMENTS PUSH THE

    BOUNDARIES OF WIRELESS TECHNOLOGIES

    Latency

    CORE CPRI

    BBU

    TRANSMISSION MEDIUM (FIBER / MICROWAVE)

    RRH

    IP BACKHAUL

    RRH

    CPRI CPRI

  • AVIAT NETWORKS

    WHICH MEANS NEW INNOVATIONS (IN WIRELESS TRANSPORT)

    WILL BE REQUIRED

    smaller

    faster

    low power

    higher capacity

    lower latency

    cheaper

  • AVIAT NETWORKS

    C-RAN offers many benefits for

    operators however Fronthaul challenges

    need to be addressed to make it a reality

  • W W W . AV I AT N E T W O R K S . C O M

Recommended

View more >