Application Note Trunking

Trunking, Backbones and Mobile Backhaul over Satellite

Satellite trunking networks provide local

and mobile networks with access to the

internet backbone or to the mobile

core. Providing trunking, backbone and

backhaul services to ISPs and telecom

operators requires constant scrutiny

of the operational expenses due to a

highly competitive market with razorthin

margins.

Satellite service providers, teleports and satellite operators that provide

these services are faced with new and complex challenges to maintain their

competitiveness, while remaining profitable. Technical solutions to deal with

these challenges and to increase efficiency over satellite are more essential

than ever.

Flexible business models based on DVB standards for satellite communications,

delivering the best Service Level Agreements (SLA) and offering trunking

services at competitive prices, put service providers back in the game.

www.newtec.eu

TRUNKING

Application Note Trunking

The Newtec FlexACM® implementation doubles

the data throughput in trunking, backbone and mobile networks

over satellite at optimal service availability.

Rev.5 09/2016

Efficiency is at the core of Newtec technology in trunking and

backbone networks, with record-breaking speeds of up to 506

Mbps over a Ku-band 72 MHz satellite transponder at optimal

service availability. At the same time maximum efficiency will

generates double throughput even for lower and medium data

rates.

The Newtec Hub6000 hubs and MDM6000 modems support

medium to high rate data communication (1 Mbps up to 425

Mbps) over satellite based on DVB-S2 and DVB-S2X. Newtec

equipment embeds the latest innovative technologies to fully

optimize trunking networks over satellite. Moreover, no extra

or new ground infrastructure (antenna or amplifier) needs to be

acquired to enable higher efficiencies.

Next to hubs and modems, Newtec also provides peripheral

equipment such as redundancy switches and frequency

converters to provide the trunking and backbone networks with

extra stability and reliability.

Newtec satellite hubs or modems are

installed on each side of the satellite

link. Networks in point-to-point,

point-to-multipoint (star) or multiple

point-to-point configuration are

supported through Single-Channel-

per-Carrier (SCPC) or Multi-Channel-per-Carrier (MCPC)

technologies. Within the same carrier, different services such as

data, video, voice, internet access, VoIP, WiMAX, GPRS, 3G/4G

can be aggregated.

Newtec technology is based on DVB-S2, DVB-S2X and

S2 Extensions and combines a set of innovative technologies in

order to fully optimize the trunking and backbone links. These

technologies are FlexACM, Cross-Layer-Optimization, Clean

Channel Technology®, Equalink® 3, Automatic Uplink Power

Control (AUPC), Bandwidth Cancellation and Wideband up to

133 Mbaud.

End-to-End Efficiency for Trunking Networks


TX: DVB-S2/ DVB-S2X

RX: DVB-S2/ DVB-S2X

72 MHz 72 MHz

Figure 1: Point-to-point network and point-to-multipoint network

SITE 1 SITE 2 SITE 3 MOBILE SITE 1

NEWTEC MODEM

NEWTEC MODEM

NEWTEC MODEM

NEWTEC MODEM

DVB-S2 or DVB-S2X

DVB-S2 or DVB-S2X

140 MHz 72 MHz

RXTX

NEWTEC MODEM

NEWTEC MODEM

SITE 1 SITE 1SITE 2

INTERNET BACKBONE OR MOBILE CORE

INTERNET BACKBONE OR MOBILE CORE

LOCAL INTERNET/NETWORK OR MOBILE BASE STATION

NEWTECHUB

2

Communication lines over satellite need to be available

at all times to exchange critical information and keep

customer satisfaction at a high level. However, fading

conditions could seriously disturb the satellite transmission

and lead to temporary link losses. Fading conditions could

be due to different circumstances: the choice of satellite

(Inclined Orbit, Ku-, Ka- and X-band), environmental (rain,

dust) or interference (between two adjacent satellites).

Thanks to the auto-adaptive technology incorporated inside

Newtec FlexACM these fading conditions will no longer

interrupt the transmission between the hub and remote sites

nor result in the loss of data. In fading conditions, FlexACM

will switch to a more robust modulation

and provide optimal availability. As

soon as fading conditions are over

FlexACM technology automatically

switches back to maximum efficiency.

Moreover, service priorities (e.g. video,

data, voice) and Quality of Service

(QoS) policies can be auto-adapted on-

the-fly depending on the bandwidth

availability through Newtec Cross-

Layer-Optimization technology.

Optimal Service Availability

Time

Adaptive Coding & Modulation

Legacy bandwidth

Noise & Distortion ( NoDE)

Variation ( ThiMM)

Optimal bandwidth (Zero margin)

(ACM)

Data,

video,

voice

Shap

ing

, Qo

S, p

rio

riti

es

Ban

dw

idth

man

agem

ent

Acc

eler

atio

n &

co

mp

ress

ion

Video

File-share

Sensor

Voice

Video

File-share

SensorVoice

Continuous three-layer feedback

Figure 2: FlexACM and Cross-Layer-Optimization protect satellite links against fading effects


SITE 1 SITE 2

KU-,KA-BAND, X-BAND, HTS

INCLINED ORBIT

FlexACM optimizes the

throughput for fading sensitive

satellites (X-, Ku-, Ka-band)

but also for Inclined Orbit

Satellites.

3

Newtec is the only player in the satellite market

that can provide different flavors of adaptive

modulation and coding (ACM) which enables

the service providers to adapt their Trunking

point-to-multipoint network to their preferred

business model.

Newtec FlexACM technology provides Committed Information

Rates (CIR) in highly adaptive satellite bandwidth environments

for services such as video, VoIP or for customers demanding a

fixed throughput at all times. The FlexACM Fixed Rate Flavor

provides up to 70% gains compared to Variable Modulation and

Coding (VCM) networks.

Committed Information Rates in Adaptive Environments

Customer quote: “Newtec turns Ku-band into C-band.”

FlexACM Independent Rate:

• Fading at remote site 3 (8PSK)

does not affect the throughput

and bandwidth of the other sites

• The sites are only influenced by

their own fading conditions

• Not fit for fixed rate services

FlexACM Fixed Rate:


does not affect the throughput and

bandwidth of the other sites

• A buffer (margin) compensates for any

fading situation across the network

through statistical multiplexing

• Customers can get CIR, even in

adaptive environments for VoIP or

video etc.

• Rest of symbols (bandwidth) can be

distributed over network (PIR or Peak

Information Rate)

FlexACM Shared Rate:


affects the throughput and

bandwidth of the other sites

• ACM ‘shared’ scenario is ok if

all remotes are part of a same

network

• Not fit for fixed rate services

• ACM version applied by

majority of the market today

Figure 3: Different flavors in FlexACM solution adaptable to the business situation of the service provider


REMOTESITE 1

REMOTESITE 2

REMOTESITE 3

REMOTESITE 4

24

18

12

6

0

24

18

12

6

0

24

18

12

6

0

24

18

12

6

0

Bitrate (Mbps)

140

120

100

80

60

40

20

0

Clear Sky (Maximum Channel Capacity)

Rain fade

Es/No (dB)

Es/No (dB)

Es/No (dB)

Es/No (dB)

8PSK 5/6

Bitrate (Mbps)

140

120

100

80

60

40

20

0


Rain fade

Bitrate (Mbps)

140

120

100

80

60

40

20

0


Bu er (Margin) against Fading

CIR

CIR

CIR

CIR

32APSK 9/10

32APSK 9/10

32APSK 9/10

FlexACM Shared Rate FlexACM Independent Rate FlexACM Fixed Rate

4

The built-in bandwidth canceller completely operates in the

digital domain providing unsurpassed performance with the

lowest possible residual cancellation noise resulting in the

highest spectral efficiency. Non-Linear Post-Compensation

(NLPC) performs real-time analysis of the complete received

spectrum and reduces intermodulation interference that affects

the demodulated carrier. Fractional licensing of the bandwidth

cancellation option allows for cost-effective redundant setups.

A very granular licensing scheme

provides a cost-effective solution for

any application ranging from a low

rate 2 Mbps circuit up to very high

rate trunks allowing a pay-as-you-grow

model.

Built-in Bandwidth Cancellation for Any Circuit

A very granular licensing scheme allows for a cost-effective solution

for low rate circuits up to

high rate trunks.


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Figure 4: Efficiency technologies Bandwidth Cancellation and Equalink 3 to further optimize the satellite link

Bandwidth Cancellation

• Cancellation performed fully in the

digital domain

• Built-in bandwidth cancellation

up-to 72 Mbaud

• Bandwidth gain up to 33%

• Flexible network scenarios (SCPC,

MCPC, Inclined Orbit Satellites)

• Superior Cancellation Performance

• Intelligent uplink power control

• Non-linear post compensation for

intermod removal

• Best efficiency with FlexACM

Equalink 3

• Pre-distortion to compensate for the

effects of imperfections in the filters

and amplifiers of the satellite

• Bandwidth gain up to 10% (or 2 dB)

• Support linear & non-linear links

• Supports 8PSK up to 256APSK

• Requires Saturated Transponders

MDM6000 SATELLITE MODEM MDM6000 SATELLITE MODEM

BANDWIDTHCANCELLATION

Before BWC

After BWC

RTFW

UPLINK REMOTE

INTERNET /PRIVATENETWORK


FW RT

KU-,KA-BAND, X-BAND, HTS

INCLINED ORBIT

MDM6000 SATELLITE MODEM

MEASURE ES/NO

ANALYZEAUTO- CORRECT

PRE-DISTORTION

LARGER FOOTPRINTBETTER QOS

MORE DATAHIGHER MODCOD

Equalink 3+10%

UPLINK

RECEIVING SITE INSIDE FOOTPRINT

MONITORING DEMOD

6

In a market where throughput rates are increasing significantly

and competition is fierce, service providers must be able to offer

a flexible and affordable service to their customers to cope with

changing market conditions and still remain profitable.

Newtec’s HUB6000 and EL501 hubs house the unique Bandwidth

Manager feature where both the IP and the satellite segment can

be shaped.

Individual customers are flexibly added or removed from the

same network. Different services (internet access, VoIP, etc.) can

be combined in the same satellite carrier with separate SLA

requirements and rate options. Both Committed Information

Rates (CIR) and Peak Rates are offered in an adaptive satellite

environment at various speeds.

Whatever scenario a service

provider selects, the Bandwidth

Manager allows business models

dedicated to the provider’s

needs and profitability to be

built flexibly.

Flexible Business Models

Figure 5: The Newtec HUB6000 and EL501 Satellite Hub allow for flexible business models

IP/ETHERNET

SITE 1 SITE 2 SITE 3

FlexACM

SITE 1CIR: 19 MBPSPIR: 25 MBPS



INTERNET ACCESS, SLA 99,8 CIR: 10 MBPSPIR: 15 MBPS

INTERNET ACCESS, SLA 99,85 CIR: 30 MBPSPIR: 33 MBPS

UDP TRAFFIC, SLA 99,85 CIR: 7 MBPSPIR: 8 MBPS

VOIP TRAFFIC, SLA 99,95 CIR: 2 MBPS

VOIP TRAFFIC, SLA 99,95 CIR: 2 MBPS

TRUNKINGUPLINK


NEWTEC HUB WITH CROSS-LAYER-OPT.

The Newtec HUB6000 allows the

service provider to rapidly and flexibly

adapt his network to changing

business conditions.


7

NewtecNorth America Newtec

China

NewtecAsia-Pacific

NewtecMENA

NewtecEurope

NewtecSouth America

Europe North America South America Asia-Pacific China MENA

Tel: +32 3 780 65 00 Tel: +1 203 323-0042 Tel: +55 11 2092 6220 Tel: +65 6777 22 08 Tel: +86 10-823 18 730 Tel: +971 4 443 60 58

Fax: +32 3 780 65 49 Fax: +1 203 323-8406 Fax: +55 11 2093 3756 Fax: +65 6777 08 87 Fax: +86 10-823 18 731 Fax: +971 4 368 67 68

SHAPING THE FUTURE OF SATELLITE COMMUNICATIONS

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More Information:

Visit our website: www.newtec.eu

Send a mail to: [email protected]

Contact us: Newtec Cy N.V.Laarstraat 5B-9100 Sint-NiklaasBelgiumTel: +32 (0)3 780 65 00 Fax: +32 (0)3 780 65 49

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Documents

Application Note Trunking