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
eran@asocstech.com
Linley Carrier Conference
June 10-12th,2014 , Santa Clara, CA

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 market
Distributed 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 Switch
with L1 ACC
L1/L2/L3
10/40/100Gbps
100Gbps
with L1 ACC
L1/L2/L3
Rack 1 Rack 2
L1 L1 L1 L1 L1 L1 L1 L1 L1 L1 L1 L1
CPRI to ETH
None Blocking Switch
L1 L1 L1 L1 L1 L1 L1 L1 L1 L1 L1 L1
CPRI to ETH
CPRI/ETH CPRI/ETH
10/40/100Gbps
100Gbps
with L1 ACC
L1/L2/L3
Rack n
L1 L1 L1 L1 L1 L1 L1 L1 L1 L1 L1 L1
CPRI to ETH
CPRI/ETH
10x100Gbps 10x100Gbps 10x100Gbps
10x100Gbps 10x100Gbps 10x100Gbps
100Gbps
100Gbps
Fat-tree SDN Switch Network
ToR
Aggregation
RRU
VM VM
L1
L1L1
L2/L3
L2/L3L2/L3
VFs on HWA VFs on HWA VFs on HWA
VM VM
L1
L1L1
L2/L3
L2/L3L2/L3
VM VM
L1
L1L1
L2/L3
L2/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 Orchestration
System
Virtual Base
Station
CloudCOMM
Dynamic
Configurator
“Nova”
“Magma”
HWA
Computation
resources
Networks
resources
Storage
resources
L1 ACC
MPU 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 in
virtual 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

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

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