The document provides information about the HALO (High Altitude Long Operation) Network, which is a proposed wireless broadband network that would use high altitude platforms stationed (HAAPS) in the stratosphere to provide connectivity. Key points: - HALO Network would combine advantages of terrestrial and satellite networks by using airplanes stationed at high altitudes as central hubs. - The network would use multiple beam antennas on airplanes to provide coverage to ground cells over a large area of up to 3000 square miles. - The system is proposed to provide broadband services like internet, telephony, broadcasting to customers using low-cost user terminals with minimal power requirements. - Benefits listed are large coverage

2. Date:26-3-15
shabeeba@baabtra.com
facebook.com/baabtra
twitter.com/baabtra
in.linkedin.com/in/baabtra
HALO
HIGHALTITUDELONGOPERATION

3. Contents
Introduction
HALO Network
System architecture
HALO Aircraft
Spectrum allocation
Reference model
User terminal
HALO Network services
Advantages
Conclusion
Reference

4. INTRODUCTION
• Demand for broadband wireless multimedia network
growing rapidly.
• HALO Network is a wireless MAN.
• High Altitude Aeronautical Platform Station (HAAPS) is
the technology used here.
• It combines the advantages of two well established
wireless communication networks,
 Terrestrial networks
Satellite networks

5. SATELLITE COMMUNICATION NETWORK
Here the central node is satellite orbiting around the earth
in space. They have high look angles.
Disadvantages
• Expensive
• High power user terminals
• Long propagation delay
• Complex structure
• Cannot be maintained easily
• System capacity will be fixed

6. TERRESTRIAL COMMINICATION NETWORK
It is simple wireless communication networks
used in cellular and personal communication systems. It
have low look angles.
Advantages
• Less expensive
• Low power user terminals
• Short propagation delays
• Scalability of capacity
• Easy to maintain

7. HALO NETWORK
 Located at atmosphere above commercial airline traffic
and below satellite networks
 Wireless MAN uses a star topology
 HALO/proteous air plane is the central hub of the network
 Provides many types of service
 HALO aero plane is specially designed to
carry the hub devices and they are having long
lifetime.
 HAAPS is the basic idea behind HALO.

8. SYSTEM ARCHITECTURE

10. HALO/Proteus airplane
• It is a specially designed aircraft which can carry weight
of approximately 900 Kg.
• The fuselage consists of ATM switches spot beam
antennas, multi beam antennas ,transmitters and receivers.
• A fleet of 3 aircrafts are cycled in shifts to achieve
communication above an isolated city
• Air plane maintains height in range 51,1000 to 60,000 ft.
• The cone of commerce have diameter of 100 km at the
Minimum Look Angles(MLA) of 20 degree.
• It can cover an area approximately 2000-3000 square
miles

12. SPECTRUM ALLOCATION
 Variety of spectrum can be utilized by HALO
# LMDS( Local Multimegabit Data Service at 28 GHz
# Micro wave point to point at 38Ghz
• HALO utilizes multiple beam on ground arranged in
cellular pattern with each cell cover more than several
square miles of area.
• Dwell time: time duration for given beam spot at a
particular cell
• Ratcheting action provide beam to beam hand over and
communication when aircraft is orbiting

14. REFERENCE MODEL
With in HALO network 4 types of elements are connected,
• Customer premises Equipment(low rate terminals)
• Business premises Equipment(high rate terminals)
• HALO Gate way( interfaces to non-HALO network)
• Network control stations(control and maintenance)
3 types of signaling interfaces are there
• UNI(User Network Interface)
• B-ICI
• NNI(Network Node Interface)

17. SUBSCRIBER UNITS
It consist of three major sub group RF unit,NIU(Network
interface unit),and application terminals such as PC,
PSTN, video terminals
The RF unit consists of tracking circuitary,MMW
transmiter and receiver.
The NIU consists of high speed modulators demodulators
multiplexers and demultiplexers.
The L band Frequency is used as IF for communication
The connection between RU and NIU provided by coaxial
pair cables
Minimal cost and easiness to maintain

19. HALO Network Services

20.  Schools hospital,small,large,business… etc will get
benefit of HALO.
 Widely separated customers can receive same
communication as in entertainment broadcasting
 Mobile telephone services,paging one way broadcasting
and satelite concentrator.
 HALO PSTN interface provides services such as e-
commerce web browsing …etc
 LAN ethernet bridging
 Service is based on “band width on demand”,providing
efficient use of available spectrum.
 Seamless large range multimedia services
 Can use in marine communication system.

21. ADVANTAGES
Capacity in range(10-100)Gb/sec
Low cost easy to maintain
Easy to implement
Low power unobstructed communication
Low propagation delay
Maximum use of bandwidth
Can be connected to non halo networks
It is stabilized
It uses broad band protocols ATM and SONET

22. HALO Network coverage

23. CONCLUSION
The HALO network can serve thosands of
subscribers within a metropolitan area,by offering
access throughout the networks signal.It has a lot
of advantages and can provide excellent service
over a wide range of area.Thus the HALO is really
a great invention in the world of wireless
communication networks.

26. US UK UAE
7002 Hana Road,
Edison NJ 08817,
United States of America.
90 High Street,
Cherry Hinton,
Cambridge, CB1 9HZ,
United Kingdom.
Suite No: 51, Oasis Center,
Sheikh Zayed Road, Dubai,
UAE
Email to info@baabtra.com or Visit baabtra.com
Looking for learning more about the above
topic?

27. India Centres
Emarald Mall (Big Bazar Building)
Mavoor Road, Kozhikode,
Kerala, India.
Ph: + 91 – 495 40 25 550
NC Complex, Near Bus Stand
Mukkam, Kozhikode,
Kerala, India.
Ph: + 91 – 495 40 25 550
Cafit Square IT Park,
Hilite Business Park,
Kozhikode
Kerala, India.
Email: info@baabtra.com
TBI - NITC
NIT Campus, Kozhikode.
Kerala, India.
Start up Village
Eranakulam,
Kerala, India.
Start up Village
UL CC
Kozhikode, Kerala

28. Follow us @ twitter.com/baabtra
Like us @ facebook.com/baabtra
Subscribe to us @ youtube.com/baabtra
Become a follower @ slideshare.net/BaabtraMentoringPartner
Connect to us @ in.linkedin.com/in/baabtra
Give a feedback @ massbaab.com/baabtra
Thanks in advance
www.baabtra.com | www.massbaab.com |www.baabte.com

29. Want to learn more about programming or Looking to become a good programmer?
Are you wasting time on searching so many contents online?
Do you want to learn things quickly?
Tired of spending huge amount of money to become a Software professional?
Do an online course
@ baabtra.com
We put industry standards to practice. Our structured, activity based courses are so designed
to make a quick, good software professional out of anybody who holds a passion for coding.