Transcript Slide 1

Introduction to
Yahsat
Pioneering initiatives for progress
Al Yah Satellite Communications Company PJSC (Yahsat) is a private joint stock
company fully owned by Mubadala, the investment arm of the Government of
Abu Dhabi, the capital of the United Arab Emirates.
“
Yahsat’s vision is to be the global partner of
choice for reliable, innovative and affordable
satellite solutions.
”
Yahsat Satellites Overview
Y1A
Y1B
Contractor: EADS Astrium & Thales Alenia
Actual Launch: April 23rd, 2011
Orbital Location: 52.5o E
Lifetime: 15 Years
Launcher: Ariane 5
Capacity/Payload:
Contractor: EADS Astrium & Thales Alenia
Actual Launch: April 24th, 2012
Orbital Location: 47.6 oE
Lifetime: 15 Years
Launcher: ILS-Proton
Capacity/Payload:
C-band: 8 of 36-MHz transponders and 6 of 54-MHz
Transponders
Ku BSS: 25 of 33-MHz transponders
Ka-band Government: all secure transponders used for
military
Ka-band Government: all secure transponders used for
military
Ka-band Commercial: 60 spot-beams
Y1A and Y1B successfully in orbit
YahClick Technology Overview
The Paradigm Shift
150- 180 Gbps
Capacity
2nd Gen Ka band
High Throughput Satellites
70- 100 Gbps
Capacity
Existing systems
(C & Ku band)
1st Gen Ka band
High Throughput Satellites
3 - 5 Gbps
Capacity
C / Ku band
Bent Pipe Satellites
Ka band systems
High throughput Satellites overview
New generation of satellites that leverage higher bandwidth available in Ka band.
Satellites are based on multi-spot beam payload and are optimized for delivering broadband services.
The main advantages over conventional satellites include:

More efficiency on the ground which enables use of a smaller
antenna size (75 cm) with low power amplifier driving down the
cost of user equipment.

Cost effective bandwidth supply due to efficient frequency reuse in spot beams.

Faster access speeds with high reliability (Terminal supports
data-rates of more than 15 Mbps on the downstream and 3
Mbps on the upstream)
Frequency Re-use & Satellite
Technology
Ka-band Frequency Re-use
SATSOFT
 In a frequency re-use scheme, the
same frequency is re-used
numerous times over different
geographical areas, much like
cellular phone technology (GSM
cells)
5° 0°
0.150
4-Color Frequency Re-Use Scheme
500 MHz
0.100
10°
10°
250 MHz
0.050
0°
5°
V
-0.000
5°
A
B
C
D
RHCP
LHCP
20200 MHz
19700 MHz
0°
-0.050
-0.100
10° 5° 0°
-0.150
-0.150
Frequency Re-use
Higher Throughput
 Frequency re-use increases
spectrum efficiency which directly
translates into increased
throughput
-0.100
-0.050
-0.000
U
0.050
0.100
Lower cost per bit
0.150
 Ka-band allows for frequency reuse on satellites because of its high
frequency
 In the example shown, the
“Yellow” frequency is used 17
times
Satellite are now a viable option for delivering broadband to consumers around the world
YahClick System Overview
YahClick Technical Overview
Higher power on the ground
enabling smaller antenna sizes
and rain-fade issues, supported
by latest Adaptive Coding and
Modulation (ACM) technology
Frequency re-use enabling
significantly greater bandwidth
services
Simple remote management
of users and services for local
service providers - no need
for local BSS/OSS systems and
processes
Multiple gateways placed in
tier-1 teleports in location
allowing affordable access to
the internet backbone
COVERAGE AREA
The coverage of Ka-Band Technology is
determined by the positioning of spot beams.
Three spot beams exist for Pakistan. Three dishes
can be used namely:
• 74cm Dish
• 98cm Dish
• 120cm Dish
Coverage map
SAT SO F T
For Information Purposes Only
36.00
Peshawar
34.00
I SLAMABAD
R awalpindi
Sialkot
Sargodha
32.00
Gujranwala
No rth L a titu d e (De g re e s)
Lahore
Faisalabad
Quett a
Mult an
30.00
Sibbi
Larkana
Kallat
D albandin
Kharan
28.00
Khuzdar
Sukk ur
N awabs hah
26.00
H y derabad
MirpurKhas
Karachi
24.00
62.00
64.00
66.00
68.00
East Longitude (Degrees)
70.00
72.00
74.00
Beam Distribution
1
2
9
Abu Dhabi
GW
16
3
10
17
Athens
GW
24
Luxembourg
GW
18
25
31
26
39
46
54
14
28
22
36
23
30
37
44
49
50
57
45
51
58
8
15
29
43
56
7
21
34
41
55
G47271 P
11/30/11
20
33
48
6
13
27
40
47
5
12
19
32
Madrid
GW
4
11
52
59
53
60
61
Terminal (CPE)
Home
• These are the
individual remote
terminals owned by
either home users or
business users
• Each terminal is also
associated with a
complete set of
hardware (IDU, ODU,
and Antenna)
identified by the IDU
ESN
Business
HN9400
HN9200
OR
0.74 Meters
0.98 Meters
HN9200
• Consumer grade
• Lower cost – optimized for typical
home usage
• Throughput
– Up to 45 Mbps multicast
– Up to 10 Mbps UDP
– Up to 2.5 Mbps TCP
– Up to 768 Kbps return
channel with a 1 watt BUC
– Up to 3 Mbps return channel
with a 2 watt BUC
• One LAN port
– 10/100BaseT
HN9400
• Business/Enterprise grade
• Higher performance with better
CPU and Memory
• High throughput
– Up to 60 Mbps multicast
– Up to 45 Mbps UDP
– Up to 15 Mbps TCP
– Up to 3 Mbps return channel
with a 2 watt BUC
• Two LAN ports
– Separate LAN subnets
supported on each LAN port
Web Browsing Performance Enhancements
TurboPage™
(HTML parse and prefetch)
–
–
–
•
Terminal implements client
“Proxy” for http traffic and
establishes reliable connection to
TurboPage Server
Web page content is retrieved
and preloaded in temporary
cache on remote terminal
Terminal client responds to
Web browser requests from
cache without roundtrip latency
DNS Caching
–
Terminal implements a DNS proxy
to eliminate latency introduced
by DNS queries
Key Benefits
– Faster Browsing
– Higher Bandwidth Efficiency
– Higher Throughput
Average time to fully open selection of web pages (seconds)
•
>50
30
25
17.03
20
12.81
15
11.89
10
5
0
Non PEP
PEPv3 - compression
on
PEPv3 - comp on and
turbo page
PEPv3 - comp on, turbo
page & DNS caching
Weather − Rain Fade
• Rain Fade is the physical phenomenon that deteriorates RF signals due to the
presence of moisture (rain, snow, ice) in the transmission path
• Losses are especially prevalent at higher frequencies like Ka-band (Yahsat 1B
is a Ka-band satellite)
• Rain fade can be caused by precipitation at the uplink or downlink location.
However, it does not need to be raining at a location for it to be affected by
rain fade, as the signal may pass through precipitation many miles away
• Signal loss can occur due to presence of precipitation on the antenna
assembly as well
• HN system has mechanisms built in to minimize the effect of rain fade on
service known as Adaptive Coding and Modulation (ACM) and Adaptive
Inbound Selection (AIS)
Adaptive Inroute Selection and Power
Control
Hub sends adjustments
to remote
Remote continually
measures received signal
quality
•
•
Hub Measures Received Signal Strength
Received from Remote
•
Hub continuously monitors the signal
strength for packets received from each
remote and sends feedback to the remote
Remote then adjusts the power control,
inroute and type of coding it uses to
maintain the signal quality received at the
hub within established bounds
This allows for a dynamic adjustment for
best efficiency and quality
Adaptive Coding and
Modulation (ACM)
QPSK
Rate 3/4
Satellite terminals
 On the outroute, system adjusts the
tolerance level to signal quality of a
terminal based on weather conditions
(hence signal quality)
 The satellite terminal measures its
outroute receive quality; in situations
such as rain fade or a weak satellite
footprint location, a satellite terminal can
send feedback to the NOC GTWY that
then adjusts the coding rate and
modulation on the traffic to that specific
satellite terminal
Less aggressive
modulation for poor
weather
8PSK
Rate 9/10
Satellite terminals
QPSK
Rate 1/2
Satellite terminals
Repeated data
transmission for bad
weather
Highest throughput for
best weather
YahClick Service Overview
Satellite services will compliment
Terrestrial broadband
Long Term Niche for satellite system
Densly Populated
Urban Areas
Suburban
locations.
Back Up Offer Only
Well served with Fibre
Filling in “not spots” and
relieving overcrowded
exchanges
Rural areas
Short term service until
full terrestrial coverage
available
Then backup for mission
critical
Primary Terrestrial Connection
Community centres,
internet cafés
Remote
locations
Primary Satellite Connection
YahClick Service Delivery Model
From Service Partner
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





Direct Sales
End User Billing
Import Clearance of
hardware
Licenses and Approvals
Service Activation
CPE Installation
Customer Service
From Yahsat


To End User
Home users, Single site and Multi-site SMEs



Satellite Control and
Configuration
Network Management
Centre
QoS Monitoring
Web Interface
Ground Segment
Infrastructure
Key YahClick Characteristics
YahClick Is Not
YahClick Is







High speed shared broadband
internet connection
Direct from satellite to gateway to
user
Affordable
Reliable
High performance
Last mile solution
Shared network, all users reside in a
single large pool within a beam.

A typical VSAT network
providing:
• Mesh/star topology
• Point to point connectivity
through a single hop
YahClick is a broadband internet service for hundreds of
thousands of users in 28 markets
YahClick – Key Differentiators
Affordable Terminals &
Bandwidth
Instant Availability
Reliability
Cost Effective Coverage
Affordable CPE prices and very competitive monthly subscriptions for “real” broadband
offerings, that can range up to 15Mbps
Instant availability across a significant number of markets—no need to wait for
infrastructure roll out
Independence from terrestrial systems and their outages or congestion, connection to
Tier 1 internet backbone with multiple redundancy, system availability at 99.5%.
Cost-effective service to the remotest customers difficult to serve with terrestrial
broadband, supporting governments’ universal service aspirations
YahClick Addressable Market Positioning
Ku/C band VSAT addressable
market
A few thousand customers
Corporate VSAT
Early
Focus
SMEs, High Net Worth
Individuals, Government
and Community Projects
Home Consumers
For SPs, YahClick dramatically expands the number of satellite subscribers
from a few hundred to potentially tens of thousands just on Y1B
YahClick addressable
market
A few million potential
customers
Terrestrial
addressable
market
Hundreds of millions of
potential customers
YahClick’s Product Challenges
Lower price
than VSAT
Terrestrial
like speed
and pricing
Match
competitive
pricing
Be more
attractive for
Service
Partner
Equal or
higher speed
packages
Create a new
consumer
market
Better
customer
care
YahClick Features
Wider package variations—very small to very large
• Small package for very light users who want only basic email and
browsing. Why pay for a full service when you can just pay for what
you really need? Extra fast packages for more sophisticated markets
Unlimited free zone
• YahClick subscribers can download unlimited content between 1am
and 6am, which is not counted as part of their daily data volume
limits, free of charge
FAP Reset Tokens
• Customers will be able to purchase a token to reset their FAP limit
and increase their data consumption at full speed
Fair Access Policy “FAP” Enforcement
Our Fair Access Policy “FAP” is designed to impact the fewest customers who overuse the network while
helping ensure the highest speeds for the vast majority of the users.
In most networks, 5% of subscribers use 50% of the traffic. FAP policies are implemented by all to prevent
abusive consumption of bandwidth by a minority of users.
To ensure that all YahClick High-Speed Internet Service customers have equitable access to the
network, YahClick sets usage allowances on the amount of data a subscriber can download within
stated time periods specified in each service plan.
If at any time a subscriber’s Usage Total is above the Usage Allowance, the YahClick system will
temporarily limit the speed at which the subscriber can receive data over the network. Subscribers will
still be able to use the Internet service but at a lower speed.
Subscribers who exceed this limit will experience a temporary reduction of speed for a Recovery Time
period. After that Recovery period, full speeds return.
How Fair Access Policy Works—Leaky
Bucket Concept
A subscriber starts with an empty “bucket”
As they download data, the bucket fills up with kilobytes at
full speed
Once the subscriber has filled the bucket over a 72 hour
period, full speed is throttled to a very low rate and a
recovery time starts.
The bucket has a hole in the bottom that “leaks out” used
data. The bucket will be completely empty after 72 hours
of zero usage. It will be one third empty after 24 hours of
no usage. Speed is restored until the bucket is full again
and speed is reduced.
Data download can continue at this slow speed, but it is
not recommended as this way the bucket will never empty
and the subscriber will never regain full speed.
Getting out of FAP – FAP Token
If a subscriber stops using the internet after going into FAP, the subscriber will get out of FAP in 24 hours
To get out of this throttled speed immediately, subscribers can pre-purchase FAP reset tokens from their SP that give
them the 10% allowance of their service package
FAP Reset token when applied sets the bucket size to 0 immediately – taking the user to un-FAPed state, and back to
their full download “up to” speed
After activating the token, subscribers can enjoy the advertised package speeds of their subscription until they exceed
the allowed usage, and then they go back into throttled FAP mode
Subscriber gets an empty bucket for the “coming rolling 72 hour period”
Subscribers may continue to activate further tokens once their bucket is filled and they are FAPed again, if required, and
the process is repeated
No limit on the number of FAP tokens that may be applied to a specific terminal
Unused volume from a FAP reset token expires after 72 hours from token activation
FreeZone (1am to 6am)
The 10% FAP policy generally enables subscribers to download movies or
video during the day at least 10 times a month
Subscribers who enjoy watching movies and videos more often are
advised to explore using download schedulers to download movies during
Freezone time
This ensures data allowance during the day is reserved for high speed
browsing, social networking and email
Software downloads and Windows Updates should be scheduled during
Freezone.