Heterogeneous

NetworksSmall Cells, WiFi and LTEin Mobile Broadband

NovákCsaba Senior Advisor LTEPractice Mobile Broadband

Ericsson Internal | 2014-04-02 | Page 2

› App coverage is the probability that the network will deliver sufficient performance to run a particular application at a quality level acceptable to the user.

Application Coverage

1

100.1 >50%

<1%

MBPS

DOWNLINK SPEED

>95%

Ericsson Internal | 2014-04-02 | Page 3

Carrier aggregation

Average user download speed with Carrier

Aggregation activated

Average user download speed without Carrier Aggregation activated

Cell coverage area,

low band

Cell coverage area, mid band

Cell coverage area, high band

Ericsson Internal | 2014-04-02 | Page 4

RBS 6000

Base Stations Then and Now

Ericsson Internal | 2014-04-02 | Page 5

Small cell Scenarios

City street/square Café/restaurant Train station/mall/airport

Stadium Office

Always onAlways onCoverageCoverageSpeed andlow latencySpeed andlow latencyCapacityCapacity

Ericsson Internal | 2014-04-02 | Page 6

Small cell products

Micro Radio Base Station

Micro Radio Remote Unit

Pico Radio Base Station

Wi-Fi Access Point

Radio Dot System

Ericsson Internal | 2014-04-02 | Page 7

It’s all about coordinationBuild small cells in a smart way

› Downlink/uplink imbalance: The small cell handover dilemma– Low power node transmit power can be much lower than macro– Best downlink cell not always ideal for uplink

Macro (high power)

Small cell

(low power)Best downlink

Best uplink Best uplink

Best downlink

Interference managementInterference management › Shared Spectrum is a must– More capacity – no split of spectrum– More robust mobility– Higher performance via coordination– Higher peak rate

› Coordination:– Coordinated Multi-Point– Coordinated scheduling– Combined cell– Soft cell: virtual sectorization,

beam forming– Dual connectivity

Ericsson Internal | 2014-04-02 | Page 8

Uncoordinated Cells

Split SpectrumLimited Mobility

Coordinated Cells

Shared SpectrumSoft Handover, X2 Mobility

Coordinated Multi-Point CellsCommon Baseband

Add 9 Cells for 2X Capacity Add 5 Cells for 2X Capacity Add 3 Cells for 2X Capacity

TEXTLimited User ExperienceHigh Cost

Good User Experience50% Reduced Cost

Great User Experience70% Reduced Cost

One network benefits

Ericsson Internal | 2014-04-02 | Page 9

Wi-Fi has bad habitsLOAD

LTE HS Wi-Fi

Load imbalance

Macro cell Wi-Fi small cell

Data rate

Limited Wi-Fi radio link

Limited Wi-Fi backhaul(eg, xDSL 10/2 Mbps)

Ping-pong effect

Ericsson Internal | 2014-04-02 | Page 10

Rethinking operator Wi-Fi

2G 3G 4G

Operator and other Wi-Fi

Mobile broadband

Other Wi-Fi

Operator-controlled access(2G/3G/4G/Wi-Fi)

Today Vision

Coverage and access technology

Ericsson Internal | 2014-04-02 | Page 11

BROADCAST UNICAST

Brings scalability and cost optimization Brings advanced personalized servicesBrings advanced personalized services

› One data channel per content

› Limited data channels and unlimited number of users

› Offer popular services over dense areas

› One data channel per user

› Unlimited channels and limited number of users

› Any content, any time, anywhere

Broadcast VS. UnicastDiverse capability within one network

Live Broadcasting›In-venue ›Nationwide or Regional coverage

Content Caching›Cached Media

Data Offload›Software, Firmware, Application Updates

M2M›Digital Signage›Connected Car

Emergency Service› Public Safety› Emergency

Notification

Ericsson Internal | 2014-04-02 | Page 12

Mobile Broadband EVOLUTION Objective

LTE Today

LTE Vision

Impr oveDensifyAdd

Impr ove

Dense urban

Urban Suburban Rural

Impr oveDensify

Area

traf

fic d

ensi

ty

Coordination - Network wide