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The Road to 1000x Data Capacity in Wireless Networks

Hardeep Saini November 2013

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Mobile Data Traffic Growth

1000x data traffic growth**

preparing for

~2x from 2010- 2011*

global data traffic growth

*Global growth, some regions grew more/less. **1000x would be e.g. reached if mobile data traffic doubled ten times, but Qualcomm does not make predictions when 1000x will happen, we work on the solutions to enable

1000x

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Evolve 3G/4G/WiFi

HetNets Interference Mgmt/SON

Intelligent Access 3G/4G/WiFi

Higher efficiency

How do we increase network capacity by 1000x?

More spectrum In low and higher bands

More small cells Everywhere!

Ad-hoc small cells Inside-out deployment

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Shannon Capacity

Capacity ≈ n W log2( 1+ ) Signal

Noise

Number of antennas

More spectrum

E.g. Mitigate interference

Dense Network Topology

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1 Assumptions: Pico type of small cell, 10MHz@2GHz + 10MHz@3.6GHz,D1 scenario macro 500m ISD, uniform user distribution scenario. Gain is median throughput improvement, from baseline with macro only on

10MHz@2GH, part of gain is addition of 10MHz spectrum. Users uniformly distributed—a hotspot scenario could provide higher gains. Macro and outdoor small cells sharing spectrum (co-channel)

The roadmap to 1000x:

More small cells, More spectrum and Improved Technology

SMALL CELL SMALL CELL

SMALL CELL

SMALL CELL

SMALL CELL

SMALL CELL

SMALL CELL

SMALL CELL

Capacity scales with small cells added1 LTE Advanced with 2x Spectrum added

SMALL CELL

SMALL CELL

SMALL CELL

SMALL CELL

SMALL CELL SMALL CELL

SMALL CELL

SMALL CELL

SMALL CELL

SMALL CELL SMALL CELL

SMALL CELL

SMALL CELL

SMALL CELL SMALL CELL

SMALL CELL SMALL CELL

SMALL CELL

SMALL CELL

SMALL CELL

SMALL CELL

SMALL CELL

+4 Small

Cells

~6X

+16 Small

Cells

~21X

+32 Small

Cells

~37X

~11X

+8 Small

Cells

1000x

More small cells: Hyper Dense HetNets Ad-hoc deployed neighborhood small cells

More Spectrum: 5x, 10x as it becomes available

Next Generation Interference Coordination Advanced Receivers Self Organizing Networks (SON)

Multiflow, Opportunistic Small Cells

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Squeeze more capacity and value out of spectrum

More efficient data pipe

Evolve 3G/4G/Wi-Fi

More efficient apps & services

Compress, cache, adapt, …

3G/4G/Wi-Fi selection

Quality of service

LTE broadcast

Smartphone

signaling

Device to device

Intelligently access

3G/4G/Wi-Fi

Smart pipe

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Authorized Shared Access (ASA)

Spectrum Aggregation

Supplemental Downlink

Exclusive licensed use on a shared and binary basis in time, location and/or frequency with incumbents

Licensed Approach

Auctions of cleared Spectrum

Complementary licensed model (ASA) Authorized shared access

Unlicensed approach

Exclusive use

ASA – Shared exclusive use

Shared use

Notes: Spectrum Aggregation Across bands, ASA spectrum (carrier aggregation), as well as unlicensed spectrum. Supplemental Downlink: Aggregate paired with unpaired spectrum.

Predictable QoS

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Spectrum aggregation – Use of all spectrum assets

Licensed

Paired

(3G/4G)**

Licensed

Unpaired

(3G/4G)**

Unlicensed

(WiFi)

ASA

Licensed

(3G/4G)**

Licensed

Paired

(3G/4G)**

Carrier Aggregation (LTE Advanced, HSPA+) Within and across paired bands, ASA spectrum,

Supplemental Downlink (LTE Advanced, HSPA+) Aggregate paired with unpaired to boost downlink

WiFi interworking Aggregate unlicensed and licensed spectrum

1 Proposed for 3GPP R12 or beyond ** Aggregation of either 3g or 4G system

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The path to 5G

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Enhancements to LTE

Release 8

FDD and TDD

Flexible bandwidth

1.4 MHz to 20 MHz

DL SU-MIMO (up to 4 layers) and SDMA

UL Transmit diversity and SDMA

Downlink peak ~ 300 Mbps

Uplink peak ~ 75 Mbps

Release 9

eMBMS

Dual stream beamforming

Positioning

Release 10

Carrier Aggregation for

up to 5 cells

Up to 8 DL layers

Up to 4 UL layers

eICIC

Relays

MDT

Downlink peak

~ 3000 Mbps

Uplink peak

~ 1500 Mbps

Release 11

DL and UP CoMP

In-device coexistence

Enhanced eICIC

CA enhancements (for

inter-band support)

ePDCCH

UTDOA

Release 12 (expected)

D2D (ProSe)

FDD/TDD aggregation

3GPP/WLAN radio-level

interworking

Small cell dynamic switch-on/off

and neighbor discovery

High order modulation

Dual connectivity

Improved DL MIMO codebook for

4Tx eNB

Network-assisted Interference

suppression

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What is 5G?

What has driven a new “G” in the past? ITU WP 5D

The enhancements to LTE?

A new air interface?

Greater commonality

Greater capacity

New services

Bandwidth flexibility

New bands

IMT-2000

IMT-Advanced

IMT.[Vision]

The path to 5G

1G AMPS

TACS

NMT

2G GSMA / EDGE

NA-TDMA

PDC

IS-95

3G WCDMA / HSPA

cdma2000 /

EVDO

4G LTE / LTE-A

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Will there be 1000x demand? It’s just a matter of time…

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