halo networks

BEN. JOHN , S N G C E

BEN. JOHN , S N G C E

HALO NETWORK-INTRODUCTION

SYSTEM ARCHITECTURE

ELEMENTS OF HALO NETWORK

POWER SYSTEM AND SYSTEM REQUIREMENTS

AEROPLANE PROPERTIES

DESIRABLE FEATURES

ADVANTAGES OVER SATELLITE

AND TERRESTRIAL NETWORKS

APPLICATIONS

CONCLUSION

BEN. JOHN , S N G C E

BEN. JOHN , S N G C E

Halo Networks

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Halo Networks

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Halo Networks

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The HALO Aircraft -the hub Consumer Premise Equipment ("CPE") Business Premise Equipment ("BPE") HALO Gateway ("HG")

BEN. JOHN , S N G C E

Halo Networks

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Halo Networks

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Halo Networks

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Halo Networks

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BEN. JOHN , S N G C E

Communications Payload Pod is mounted to a pylon under the fuselage. 0.8 tonne weight communications pod

Each cell covers a small geographic area, e.g., 4 to 8 square miles.

The wide and narrow beamwidths within each beam or cell are achieved by using MMW frequencies.

Small aperture antennas can be used to achieve small cells.

An ATM-like packet switch provides the network switching capability to cross-connect all users within the coverage area as well as connections to other users through gateways.

The elements are MMW transceivers, pilot tone transmitter, high-speed modems, SONET multiplexers, packet switch hardware and software

It is relatively simple.

It comprising a Radio Frequency Unit and a Network Interface Unit.

The Radio Frequency Unit contains the steerable dish antenna, a millimetric band transmitter , a millimetric band receiver, and the antenna steering mechanism.

It contains the modulators and demodulators for the signal.

The feed to and from the Radio Frequency Unit is done in the 1.4 GHz band, with up/down conversion performed in the Radio Frequency Unit.

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Pow ered by tw in turbofan eng ines and designed to have an "efficient high-altitude loiter"

Aircrafts pow er s ys tem consist of S olar Photovoltaic cell with a regenerative fuel cell.

Advantag e of using this is that it eliminates the need of and compress air at high altitude.

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BEN. JOHN , S N G C E

Halo Networks

The HALO Aircraft is alsocalled Proteus Aircraft.

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The Proteus is built with composite materials.

Weight -- 6.4 tonnes

Engine Type -- Williams FJ44-2E jet engines.

Seating for two pilots, with an extra seat for a relief pilot or passenger.

The cabin is pressurised and high altitude pressure suits are not required.

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AIRCRAFT PROPERTIES ( CONTINUED..) Halo Networks

Halo Networks

Total coverage of a metropolitan center and its surrounding communities on the first day

Access to the consumer, and content information markets

Easy upgrades of the entire network

Steady improvement of performance through routine maintenance

Integration of technologies from terrestrial communications networks, wireless and wired

Bandwidth on demand for efficient use of available spectrum.

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Eg:Ubiquitous Access through the HALO Network

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Ease of Installation

1. The Consumer Premise Equipment (CPE) , whether delivered or purchased through a retailer, is designed for rapid installation and ease of use.

2. The antenna is self-pointing and is mounted on an outside area offering a clear view of the HALO™ aircraft.

Halo Networks

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Provides data densities nearly one thousand times higher.

It has high power available to their payload.

The HALO Network integrated with a satellite network can increase the throughput, competitiveness, and revenue of a satellite constellation.

Because of the relatively short distance between the HALO node and the end user (10 to 35 miles), low-cost, low-power premise equipment can be used.

The HALO Network can serve hundreds-of-thousands of broadband end users on a metropolitan distance scale.

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BEN. JOHN , S N G C E

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Over satellite network : S atellite network have expensive high power user

terminal and long propagation delay. system capacity is practically fixed. Establishing a provides data densities nearly

one thousand times higher new satellite is very expensive Having round trip time delays Satellites have limited power

available to their payloads. Satellites require costly premise

equipment.

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Over Terrestrial network Terrestrial networks have low look angles and

complex infrastructure. They require many base stations that must be

interlinked with cables. The communication paths have low look angles with

multipath Rayleigh fading. Each time cell splitting is used to increase system

capacity, the network can demand significant reengineering

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The stratospheric HALO aircraft offer three benefits to an integrated HALO-satellite global network:

1. As HALO aircraft are high above the atmosphere, they easily link to numerous satellites.

2. HALO-to-satellite link use very high carrier frequencies offering ultra-wide bandwidths.

2. The HALO be the front-end of anintegrated system.

To HALO-satellite global network :

Widely separated customers can receive same

communication as in entertainment broadcasting.

We can access interactive TV and internet. Customers can have large coverage area in

telecommunication compared to terrestrial network.

Can use as a communication techniques for remote areas.

Can use in marine communication system.

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The HALO Network can provide wireless broadband communications services. The HALO/Proteus airplane will be the central node of a broadband communications network, the HALO Network, having a star topology.The network will utilize packet switching to offer bit rates to each of thousands of end user in the multi-megabit per second range. A variety of spectrum bands licensed for commercial wireless services could provide the needed MMW-carrier bandwidth. The signal footprint of the network, the Cone of Commerce, will cover a typical large city and its surrounding communities. HALO aircraft will fly above commercial airline traffic. A fleet of aircraft will be operated in shifts to achieve around-the-clock service. Finally, the HALO Network will be an evolving "network solution" that can be deployed one market at a time to ease the financing commitment of growing a global business.

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1.N. Colella and J. Martin, "The Cone of Commerce™," Proc. of the SPIE International Symposium on Voice, Video, and Data Communications: Broadband Engineering for Multimedia Markets, 1997.

1.G. Djuknic, J. Freidenfelds, et al., "Establishing Wireless Communications Services via High-Altitude Aeronautical Platforms: A Concept Whose Time Has Come?," IEEE Communications Magazine, September 1997.

3. www.angelcorp.com/overview.htm

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BEN. JOHN , S N G C E

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