Reality Check – Macrocells, Small Cells and LTE … Check – Macrocells, Small Cells and LTE Advanced Antenna Systems 2014 November 6, 2014 Las Vegas, NV Keith Radousky CTO –

Reality Check – Macrocells, Small Cells and LTE Advanced Antenna Systems 2014 November 6, 2014 Las Vegas, NV Keith Radousky CTO – Americas

Copyright © 2013 Quintel. All rights reserved. Quintel Confidential.

Discussion Points and Presentations • Wireless Subscribers Ravenous for More Bits!

• More Spectrum Coming – 600MHz, AWS-3, ??

• TOWERS ARE OVERLOADED

• Carriers are Scrambling to Add Capacity

• Deploying Small Cells/DAS vs. Increasing Macrocell Capacity

• Quintel Overview – MultiServ and SONWAv Antennas

• LTE Advanced - 2Tx-2Rx to 8Tx-8Rx

• Active, Integrated and Passive Antennas


The Capacity Crunch

• The Capacity crunch • We are all aware of it • By 2025 there may be 50x, 500x increase?

• How is it solved?

– More Spectrum (~3x increase by 2025) – More Spectral Efficient access tech (~3x increase by

2025) – More Spectral re-use/denser topologies (~?x increase) – Pricing mechanisms

• Small Cells are the acknowledged answer in the

form of DAS, Femtos, Picos, etc and part of a HetNet.

• But the Macro Layer won’t be replaced by Small Cell Layer, so how can the Macro layer evolve and be prepared for the Capacity crunch?

Source: Verizon

How do we close the gap?


• Privately held spin out from QinetiQ UK (formerly the UK Defence Research Agency)

• Over 100 patents globally

• HQ in Rochester, NY, USA

• Additional R&D centre in California, and sales offices in UK (EMEA) and Mumbai

• Shipping innovative product for over 5 years with 6 operators and 3 continents

MultiServTM Product Family

Multiband/Multi-Port Antenna Products

SONWavTM Product Family Passive Beamforming Antenna Products

Space Efficient Mast Solutions

PIM Efficient Solutions

Spectrally Efficient Mast Solutions


Band UBB 6-Port

UBB 8-Port

UBB 12-Port

700

2 2 2

850 2 2

1900

4 4

4

AWS

4 WCS

8 Port Available

UBB 8-Port QSx658-3

12 Port Q2’15

UBB 12-Port QSx6512-3

MultiServTM 6Port, 8Port &12 Port Summary

6 Port Available

UBB 6-Port QSx658-3


TODAY - Two Antenna/Sector Sites – Add LTE 2T4R 700/AWS 2G/3G Independent Tilt with Spatial/Polar Diversity

Tx/R

x

Tx/R

x

Tx/R

x

UMTS850

UMTS1900

Tx/R

x

Tx/R

x

Tx/R

x

Tx/R

x

GSM1900 GSM850

19 19 8 8

19 19 8 8

Fiber

LTE 700 LTE AWS

8 19 8 19

8 19 8 19

Tx/R

x

QS6658-1 Tilt per Band 700/AWS Tilt per Pol 850/1900


Vendor 2 750MHz

Vendor 1 750MHz

C/I 25dB

-1dB

Overlap regions causes reduced C/I

C/I when deployed on 7x sites

SPR is a crude indicator of spectral efficiency.

Another metric is to compute the C/I as a function of Az angle assuming a tri-sector arrangement, where the I is the inter-sector interference.

Next step is to deploy multiple sites in a cluster, compute the C/I over an area (as a planning tool would), and then correlate this with Downlink throughputs, since C/I and Tput are related, and derive an average Tput value. We could achieve >20% gains in Capacity over other Multi-port antennas at Lowband.

Quintel 750MHz

Market Leader: Sector Power Ratio (SPR) Lowband

Undesired


How Quintel QTiltTM Technology Works

19 A

19 A

Qui

ntel

Cor

pora

te F

eed

Net

wor

k (+

45o )

AWS PCS Tx

/Rx

Tx/R

x

+45 PCS

+45 AWS

Quintel VET Principle (2x Tilts)

PCS AWS

Pow

er D

ivid

ing

Net

wor

k

Actuator

Base Station

Standard VET Antenna

Tx/R

x

Phase slope across array (–θ to +θ )

Max Tilt

Min Tilt Mid Tilt

Phase slope across array (–θ to +θ )

Single Phase Difference (–φ to +φ )

Qui

ntel

Cor

pora

te F

eed

Net

wor

k (+

45o )

Tx/R

x

Quintel VET Principle

Max Tilt

Min Tilt Mid Tilt

Base Station


X-Polar SONWavTM

4Rx Uplink Solutions

2 Antennas/Arrays Quintel 1 Antenna/Array Azmuthal Beamsteering Elevation Beamsteering

CLA-2X 4-Port

Antenna

Tx Pattern

Adaptive (per UE) Rx Patterns

4x Rx Branches at Baseband MRC or IRC (per user)

Σ Tx

/Rx

2T4R

Rx

Tx/R

x R

x

Tx Pattern

Adaptive (per UE) Rx Patterns

Σ

4x Rx Branches at Baseband MRC or IRC (per user)

Logically Equivalent

Tx/R

x

2T4R

Rx

Tx/R

x R

x

Crude Azimuthal Beamforming Elevation Beamforming (Tilting)


Qui

ntel

Cor

pora

te F

eed

Net

wor

k (+

45o )

Cor

pora

te F

eed

N

etw

orks

Qui

ntel

Cor

pora

te F

eed

Net

wor

k (-4

5o )

LTE (R9+) 4T4R

+45A +45B -45A -45B

Beamforming in Elevation across each A&B ports

Spatial Multiplexing up to Rank 2 across +45 and -45 BF pairs

Dynamic Beamform/Tilting for LTE

Interference

UE

A Solution for Spectral Efficiency - SIMS SONWav - Adaptive Elevation Beamforming (Up & Downlink)

4T4R eNodeB (giving adaptive coherent

Beamforming)

0

10

20

30

40

50

60

0 100 200 300 400 500

LTE 2GHz/20MHz 2x2 Config Flat Earth 3x19 cell geometry

(25m Ht x 500m Cell Radii) Monte-Carlo Simulation

Mbps (y) vs. Dist in m (x) Blue – No Elevation BF

Red – With Elevation BF


First Operator Highband SONWav Trials Shows 30% Avg & 80% Cell Edge UL TP Gain

SONWav demonstrated ~30% increase in Uplink throughput gains

on average and ~80% cell edge gains

Rx

Rx

Tx/R

x

Tx/R

x

2T4R

X-Polar SONWav

Tx/R

x

Tx/R

x

2T2R

Single X-Polar

Array 2T2R

Same size antenna array AWS Band/10MHz LTE

North American Op

• AWS Band (2100/1700MHz) • Trial Sites ~28m and 30m Heights • Inter Site Distance ~1.1km • Two Sectors “facing each other” tested • LTE service tested


Static UE Static UE Static UE

Static UE Static UE Static UE

Static UE

Second Operator Highband SONWav Trials (MU-MIMO) Shows 35% LTE Uplink Throughput gains

Static UE Static UE


Second Operator Highband SONWav Trials (Inter-Cell Rejection) Shows 80% LTE Uplink Throughput gains at Cell Edges


4ft - QW4658-3 6ft - QW6658-3 8ft - QW8658-3

QWx658-3 Series • Same as MultiServTM 8-Port antennas but

Lowband plugs into 4-way radios (2T4R or 4T4R)

• Alternative 4-Port Lowband solutions too big • 3x Independent Tilts, as:

– 4x 698-894MHz Ports For 2T4R @700

– 4x 1695-2400MHz Ports For 4x4 MIMO

• The only Slimline 12” solution with 4xLB ports • 50% Spectral Efficiency Gains at Lowband • Significant rejection of interference, ideal for:

– Interference Limited environments – Tall Macro Sites/Short Inter-Site Distances

2x16

95-2

400

2x69

8-89

4 Tx

/RX

2x69

8-89

4 R

x/Tx

2x16

95-2

400

8-Po

rt

QW

x658

-3

2T4R

2T4R

No need to use these 4x Port options at Low-Band

……………………………………………..….

A Smarter antenna for 2T4R Lowband


Test Cell

Test Cell

50% Gain

Drive Survey UE Uplink Throughput CDF of the Test Cell where: (a) No inter-cell interference present and using 2T2R X-Pol antenna (b) UE causing Inter-Cell interference and using 2T2R X-Pol antenna (c) UE causing Inter-Cell interference and using 2T4R SONWav antenna

Static location of the Interfering UE, camped onto an adjacent cell creating co-channel inter-cell interference into the Test Cell.

(Standard 2T2R X-Pol Antenna)

(With Quintel 2T4R SONWavTM Antenna)

Rx

Rx

Tx/R

x

Tx/R

x

2T4R

Tx/R

x

Tx/R

x

2T2R

1st Deployment at LTE700


2nd Trial at LTE700

2T2R Conventional 2T4R SONWav

No

Inte

rfer

ence

C

lose

-in 1

0MH

z w

ideb

and

Inte

rfer

ence

• 3x sectors, Sub-urban Macro Cellsite

• 2x10MHz LTE700,100ft, ISD ~ 2.5 miles

• eNB running MRC/IRC

• UE fully loaded, full buffer/all RB’s used, UDP traffic. Plots show UE Tput in the presence of…

• Top = No external interference • Bottom = Intentional interference

• When SONWav 4-way Rx enabled…

• RSSI counters improved markedly

• Uplink SINR, MCS and throughput statistics improved

• Resilience to co-channel interference demonstrated, either network generated or from external sources

• Throughput gains of up to 60% were observed

Interference sources

Uplink Throughput

Gains

Interference sources

Uplink Throughput

Gains


What is an Active Antenna??? D

istri

butio

n N

etw

ork

Distribution N

etwork

Integrated RRH/ Passive Antenna

Distributed Amplifiers

Distributed Transceivers with Sub-Array

Quintel C

orporate Feed Qui

ntel

Cor

pora

te F

eed

Distributed Transceivers with Sub-Array (with Quintel inside)

Qui

ntel

Cor

pora

te F

eed

Quintel C

orporate Feed

Integrated RRH/Passive Antenna (with Quintel inside)

What is an Active Antenna? • Integrated RRH/Passive

Antenna – Possibly with some level of

redundancy • Distributed Amplifiers

– 1 amplifier per element • Distributed Tranceivers with

Sub-Array – 1 amplifier per element pair (or

more) • Active/Passive Combinations

Quintel offers the capability to integrate with a - 4T4R RRH, or - External RRH, or - Ground based eNB

Quintel combined with Distributed Transceivers can increase tilt range 2 – 3 times over differential input


Roadmap to 8T8R 2 X-POL Antennas with SONWavTM

Rx

Rx

Tx/R

x

Tx/R

x

4T4R

Dual X-Polar SONWavTM

4T4R

Rx

Rx

Tx/R

x

Tx/R

x

4T4R

Dual X-Polar SONWavTM

4T4R

+ =

1x Az null

1x El null

8T8R 8T8R

Too Wide, even at 0.5λ spacing?

• Standard <300mm (12”) Wide Form Factor; doesn’t have to be 0.5λ array column spacing • SONWavTM gives close in Null Fill effect = coverage and performance close to cell site

• Ideal for TD-LTE applications and offers promise of a higher gain BCH • Flexible to provide additional bands (i.e. Lowband Array and/or 2nd Highband via MultiServ) • Practical, near term solution

CLA-2X +

SONWavTM


Thank You! Keith Radousky

404-520-8206 [email protected]

When wireless is pushed to the limit the answer isn’t more of the same

The answer is more innovation

mailto:[email protected]�

Documents

Reality Check – Macrocells, Small Cells and LTE … Check – Macrocells, Small Cells and LTE Advanced Antenna Systems 2014 November 6, 2014 Las Vegas, NV Keith Radousky CTO –