2014 - 6 - Paving the way to a virtualized base station

© 2007-2012 ASOCS Ltd. All rights reserved. 1© 2007-2014 ASOCS Ltd. All rights reserved. Eran Bello August 6, 2014

Paving the way to a virtualized Base Station

Eran Bello, VP Products & Marketing

ASOCS

[email protected]

Linley Carrier Conference

June 10-12th,2014 , Santa Clara, CA

mailto:[email protected]


The Carriers Problem

► Data usage is exploding

► It seems like everyone has a smartphone

► Consumers upload video to Facebook, YouTube and the like

► Consumers download video clips more than they watch TV

► Revenues remain flat

► Consumers reluctant to pay more

► Wi-Fi made users used to the notion that data is free

► Competition prevent price increase

► Carriers keen to reduce capital and operating costs

► The network is built from “endless” proprietary gear

► Expensive, cumbersome, vendor lock and does not scale

► Hard to keep up with new wireless technologies and generations

► Carriers wish to increase service agility across their network

Voice Era

Data Era


Telecom NFV: Network Functions Virtualization

► Consolidation of traditional network functions onto standard servers, storage and switches

► Driven by largest carriers of the world

► Driven by ETSI ISG with more than 280 member companies

► Drive the Telecom eco-system including integrators, solution and technology providers

► Server scalability and virtualization technologies have matured and can deliver on the promise of hardware ubiquity


Dealing with Dynamic Mobile Network Load

► The “Tidal effect“: Subscribers are frequently moving network load from one place to another in a similar pattern

► The challenges of traditional fixed network topology

► Each Base-station processing capability can be used by the active users in its cell only

► Idle Base-stations in areas/times and oversubscribed in other areas

► Each Base-station designed to have much more capacity than the average needed


► C-RAN Value Proposition

► Shared processing resources: Reduce overall Baseband size

► By region, by frequency and by standards: 2G/3G/4G

► Simplify deployment: Significant OPEX and CAPEX reduction

► Faster system roll out, Faster upgrade to future wireless standards

► Energy efficient: Saves up to 70% compared with traditional RAN

C-RAN: Cloud Radio Access Networks


C-RAN: Cloud Radio Access Networks

► APAC: Strong momentum

► China Mobile, KT and SKT and NTT

► North America and Europe

► Fit the Carriers Het.Net vision

► Regional based

► Fit DAS marketDistributed Antenna System

► In-Building

► Stadium, Campus


Telecom NFV Infrastructure and Use Cases

► Virtualization of traditional network functions such as Security, CDN, IMS, EPC and BS

► ETSI NFV Use case #6: “Virtualizing the Mobile Base Station”

NFV: Network Functions Virtualization

NFVI: NFV Infrastructure


NFV Use Case #6: virtual Base Station

► SoftRAN: Radio Access Networks optimization

► Manage and migrate the VMs by dynamic probing

► RTOS: Real Time Operating System virtualization

► I/O virtualization

► BBU : BaseBand Unit virtualization

► Dynamic allocation of the processing resources

► PHY infrastructure optimization

► Manage and optimize PHY layer in Cloud architecture.

► CoMP: Coordinated Multipoint decisions

► Interference cancellation

► Handover performance optimization (X2 U-Plane)

► SON: Self Organized Networks


vBS: virtual Base Station Description

► vBS often called vRAN: virtual Radio Access Network

► A software based implementation of traditional base station

► Deployed in virtual machines on standard COTS servers

► Enable shared and dynamic resource allocation


vBS Design and Goals

► The vBS as any other vNF: virtual Network Function

► Co-located at the same Datacenter as other vNFs

► Modular, Reliable, Agile, Simple, Scalable, Open

► In accordance with the ETSI ISG NFV framework

► Exceed the demanding performance of the traditional BS

► High processing power and high data rates

► Coverage and capacity

► Low latency requirements

► Enable the network to evolve faster than ever before

► Aim to disrupt the dynamics in the cellular industry


vBS vs. Traditional Base Station

Traditional Base Station vBS

Location Cell tower Datacenter

Equipment Supporting local worst case Supporting average load

CapEx Expensive: Closed box solution Affordable: Commodity pricing

Agility Designed for specific scenario Dynamically reconfigurable

Capacity Limited by design Flexible, supporting CoMP

Sourcing Telecom Equipment IT Equipment

OpEx High: Cooling, Security, Distributed Low: Centralized


vBS as a NFV vNF: virtual Network Function

NFV vNF Requirement vBS

Management and Orchestration

The vBS defines the resources for each state in its lifecycle • Installation, execution, upgrade, migration,

scaling

Performance Each vBS includes the list of resources it requires in order to support the needed performance

Scalability The vBS supports dynamic scaling • Carrier aggregation

Portability The vBS compute and networking components meet standard NFV infrastructure requirements

Openness All software in C

Migration and co-existence

The vBS works with regular RRU devices and EPC: Evolved Packet Core software

vBS vRAN vWNW (virtual Wireless Network)


The ASOCS vBS Solution

► Supports near infinite amount of BS configurations

► Base Station L1/L2/L3 deployed in virtual machines

► ASOCS virtualizes the entire L1

► Adaptive partitioning of PHY resources between CPU and HW Accelerator

► Based on ASOCS Software Programmable platform

► Modular design enable flexible business operation model

vEPC:

Cell

Towers

RRUs

vBS - vNF

L1 ACC

vNFC

VF on HWA

L1 ACC

vNFC

VF on HWA

L1 ACC

vNFC

VF on HWA

L1

vNFC

VM on x86

L1

vNFC

VM on x86

L1 SW

vNFC

VM on CPU

L2

vNFC

VM on x86

L2

vNFC

VM on x86

L2

vNFC

VM on CPU

L3

vNFC

VM on x86

L3

vNFC

VM on x86

L3

vNFC

VM on CPUVFs on HWA VMs on CPU VMs on CPU VMs on CPU

Management and Orchestration System


CloudBS and Front-Haul Switch Topology

► Leveraging ASOCS L1 ACC in a remote HWA Architecture

► Shared resource serving a cluster of standard servers

10/40/100Gbps

100Gbps

C-RAN Fronthaul Switchwith L1 ACC

L1/L2/L3

10/40/100Gbps

100Gbps


L1/L2/L3

Rack 1 Rack 2

L1 L1 L1 L1 L1 L1 L1 L1 L1 L1 L1 L1CPRI to ETH

None Blocking Switch



CPRI/ETH CPRI/ETH

10/40/100Gbps

100Gbps


L1/L2/L3

Rack n



CPRI/ETH

10x100Gbps 10x100Gbps 10x100Gbps

10x100Gbps 10x100Gbps 10x100Gbps

100Gbps

100Gbps

Fat-tree SDN Switch Network

ToR

Aggregation

RRU

VM VM

L1L1L1

L2/L3L2/L3L2/L3

VFs on HWA VFs on HWA VFs on HWA

VM VM

L1L1L1

L2/L3L2/L3L2/L3

VM VM

L1L1L1

L2/L3L2/L3L2/L3


Cloud Base Station in an NFV OpenStack System

► Configuration and operation through OpenStack interfaces

► HWA resources through “Nova” Interface

► Longer term potential foundation of “Magma” HWA Interface

► Enable HWA specific customization

VIM: OpenStack

ASOCS CloudCOMM

“Nova”Compute

CPU

“Neutron”Networking

“Cinder”Storage

Management and OrchestrationSystem

Virtual Base Station

CloudCOMMDynamic

Configurator

“Nova” “Magma”

HWA

Computation resources

Networks resources

Storage resources

L1 ACCMPU Pool

(BB Acceleration)


► Ideal for Telecom NFV and C-RAN environments

► NFV: Network Functions Virtualization

► C-RAN: Cloud - Radio Access Networks

Cloud Base Sation Solution

ASOCS software

ASOCS platform technology

ASOCS software to TEMs and Carriers enabling

serversto run virtual base-station as an “app.”

ASOCS platform technology enabling

design gear that accelerates and enhances server performance and

capacity

ASOCS vBS: Base Stations invirtual machines

L1 Accelerator:Processes the

information from the antenna and sends

packets to the server

Telecom Data Center

The last major obstacle en route to a full

Software based Wireless Network


ASOCS SDA: Software Defined Access

► SDA allows Carriers to manage Base Station resources easily through virtualization of the L1 functionality

► Replaces the traditional manual configuration and deployment of hardware based L1 processing

► The emergence of C-RAN, in which a cellular network uses a centralized or regional Server Farm to process cell site traffic at the L1 level, makes SDA critical

► SDA decouples the specific hardware of a given cell site and or C-RAN baseband resource pool, the L1 data plane, from the upper stack software and signaling management, the L2 and up control plane

► SDA mitigate vendor interoperability risk and enable advanced network features such as CoMP and massive dense networks


Summary

► Virtual Base Stations have overwhelming advantages over the traditional implementation

► ETSI ISG NFV has defined a virtual Base Station and its goals

► vBS must cover all the layers of the stack including L1

► vBS L1 Accelerator shall support both server attached and remote HWA topologies

► vBS pave the way to Software Defined Wireless Access (SDWA)

► SDA enable numerous business models and opportunities in RAN

© 2007-2012 ASOCS Ltd. All rights reserved. 19© 2007-2014 ASOCS Ltd. All rights reserved.

Thank you

Date post:	22-Nov-2014
Category:	Technology
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2014 - 6 - Paving the way to a virtualized base station

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