INTERNET VIA SATELLITES - PowerPoint PPT Presentation

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INTERNET VIA SATELLITES

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Most internet connections hub' in USA, UK and France ... Host location of Internet data is predominantly in North America (75% by some estimates) ... – PowerPoint PPT presentation

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Title: INTERNET VIA SATELLITES


1
INTERNET VIA SATELLITES
  • Paul Nalikka
  • Regional Director
  • Africa/Sales and Marketing

2
Topics
  • Internet delivery via satellites - Drivers
  • Bandwidth Solutions
  • ISPs
  • Contacts at INTELSAT

3
The Internet Bucket is Far From Full
304 Million
Internet Users
Total World
Population
6 Billion
Sources NUA Internet Surveys and U.S. Census
Bureau
  • Only 5 of the worlds population use the
    Internet
  • Penetration rate in North America is only 45

4
Internet Over Satellites A Summary
  • INTERNET over INTELSATs satellites
  • Over 80 of African countries use INTELSAT for
    their Internet traffic with Europe and North
    America
  • INTELSAT carries more than 10x36 MHz of Internet
    traffic

5
Internet Delivery via Satellites What are the
Drivers?
  • Rapid and easy implementation
  • Network congestion bypass
  • High quality
  • Delivering Cost savings
  • Scalable capacity
  • IP multicast
  • Symmetric asymmetric configurations

6
Drivers Unique to Africa
  • Insufficient terrestrial facilities, no cable
    connectivity - leading to demand for satellite
    solutions
  • Lack of Cross-border or regional backbones
  • Most internet connections hub in USA, UK and
    France
  • Most used Internet application in Africa is email
    (1998 ECA study)
  • 35 displacing voice and fax
  • 65 new traffic VPN, audio,video

7
Drivers Unique to Africa (cont)
  • Local Web content development increasing
  • Hosts went up from 290 (1995) to over 10,000
    (1998) excluding RSA leading to a dramatic
    increase in demand for bandwidth
  • The factors above are driving growth
  • 1995 South Africa had 64kbps links
  • Today, 17 countries have 512kbps satellite links
    or more
  • Kenya, Nigeria, RSA have 8 Mbps or more satellite
    links in service

8
Internet Driving Demand for Bandwidth
Multimedia Applications
Global Growth in Consumer Base
Bandwidth
Convergence
E-commerce
Intranets/ Extranets
Competition
Bandwidth demand is accelerating
9
Satellite Broadband Solutions
  • Asymmetric Satellite Links
  • IP Multicasting
  • Move Content to Network Edges
  • Convergence-VoIP

10
Asymmetry
  • Internet traffic is asymmetric
  • Ratio of request traffic to return traffic is
    typically 15
  • Host location of Internet data is predominantly
    in North America (75 by some estimates)
  • Terrestrial networks typically offer symmetrical
    links Not cost effective

11
Asymmetry (cont)
  • Satellite links address Internet asymmetry in a
    cost effective way
  • Flexible - symmetric or asymmetric
  • Scalable to fit outbound and inbound traffic
    requirements
  • Rapid deployment

12
IP Multicasting
  • Unicast separate copy of data is sent to each
    client who requests it
  • Broadcast single copy of data is sent to all
    clients on network
  • Multicast bandwidth efficient - sends single
    copy of data to clients who request it
  • Multiple copies are not sent
  • Data is sent where it is needed

13
Caching - Moving Content to Network Edge
  • Primary function push popular web-based content
    closer to the end-user i) fast access ii)improved
    bandwidth efficiency iii) transmission cost
    reduction
  • The primary cache (at the WAREHOUSE) can be
    filled by reference to user profiles and/or by
    content provider subscriptions
  • Contents of the warehouse cache are periodically
    multicast to subscribing ISPs
  • The secondary cache (at the kiosk) locally serves
    end-user subscribers of each ISP
  • Reduces the international world wide wait

14
Multicasting and Edgecasting (Caching)
real-time Internet access service (the PULL
mode accessway, for todays interactive
application set)
inbound
requests plus
acknowledgments
warehouse/hub site -
content distributor
inbound
real-time
Internet requests/
content
outbound
real-time
near-to-real-time Internet delivery to cache (via
a true PUSH mode) could also include real-time
(true webcasting) services
Internet content/
requests
I N T E R N E T
outbound
Internet cache
contents/updates
any single kiosk site -
receiving in both multicast
...it has PUSH and PULL data delivery modes
combined
and unicast modes
15
Technology is Converging on the Internet
Convergence Represents the Rapid Coming Together
of aWide Range of Formerly Distinct Industries
16
Convergence - VoIP
  • VoIP refers to transmission of Voice over the
    IP Protocol
  • Convergence of voice and data
  • Voice source coding to reduce bandwidth
  • QoS Issues
  • Latency, Jitter, Packet Loss
  • Opportunities and Challenges
  • Regulatory
  • ISPs vs Telephone Companies

17
VOIP and Internet Access for Rural
Communications using VSAT via INTELSAT Satellite
INTELSAT
Satellite
HUB Antenna
C-Band or
Ku-Band
Network
VSAT
Management
System
Out Door
Unit
(ODU)
E/S Equipment
Satellite
Modem
GateKeeper
Router
Wireless
Ethernet Hub
Satellite
Hub Router
Modem
VoIP VSAT Gateway
Billing
_at_ Remote
System
Router
VoIP
Gateway
Ethernet Hub
Digital or Analog
Channels
RSU
Digital or
RSU
Voice
Phone 2
Phone n
Analog Interface
Channels
Approx 30 miles in radius
PBX
Wireless Local
RSU
Loop (WLL)
Phone 1
256 kbit/s
Wireless
Remote
PSTN
Router
Fax
PC
PC
Router
ISP
RSU Remote Subscriber Unit -- approx. 30 miles
radius
Wireless-WAN Router -- approx. 15-20
miles radius
Fax
INTERNET
Backbone
18
Why Are More and More ISPs Choosing Satellite
Access?
  • Now
  • Bandwidth solutions
  • National terrestrial circuits not adequate to
    support all cities or remote locations
  • Economically attractive asymmetric solutions
  • High reliability
  • No alternative connectivities
  • Future
  • 1) Application / network-based solutions
  • VSAT/DVB-Based IP Service
  • Multicasting and Caching-reduces transmission
    cost
  • Satellite Link Enhancement (TCP/IP Spoofing)
  • Improves performance
  • 2) Regulatory relief

19
Satellite-Based ISP Implementation Setup
20
In Summary
  • Internet revolution is here
  • Key drivers cost, bandwidth, reliability
    connectivity, convergence
  • Opportunities for ISPs, telephony providers
  • IP Telephony, e-commerce, etc.
  • Challenges exist
  • Network, cost, security, regulatory etc
  • Satellite-based solutions are cost effective

21
The INTELSAT Difference
  • Industry Leader
  • Highest Market Share
  • Testing Proof of Concept for New Enabling
    Technologies
  • Pre-Engineered Solutions
  • Customer Driven
  • Greatest Global Reach - 200 Partners
  • Advantage Program
  • IBN

22
Africa Sales Group
24 hour response Tel number 1-202-944-7111 Fax
Number 1-202-944-8133
23
INTELSAT on the Web
  • INTELSAT Web Pagehttp//www.intelsat.int
  • INTELSAT Business Network (IBN)https//ibn.intel
    sat.int
  • Customer Service Homepagehttp//www.intelsat.int
    /csc/customer.htm
  • Africa Sales GroupE-mail sales.africa_at_intelsat.
    int
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