Developing an infrastructure for viral communication between · PDF file ·...

Canadian Journal on Computing in Mathematics, Natural Sciences, Engineering & Medicine Vol. 1, No. 3, April 2010

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Developing an infrastructure for viral communication between remote towns using power line carrier (PLC) and

Automatic Radio Position System (APRS).

William Camilo Reynoso, Javier Bustamante, Luis Joyanes, Lucio Colaiacomo

Abstract: The project is based on creating an infrastructure of communications

network for the aims of the connectivity enters the users the Internet of viral form,

distributed and burglaryable; where: with several accounts of Internet distributed

in the systems and the installation of a software designed for such aims, antennas

of connection and modest computers; we can accede to the Web without decline of

the bandwidth, as it would happen in the case of a standard serial connection. It is

tried to make use of resources of great robustness; as PLC (Power Line Carrier)

managed through the mains that are used in the service of energy that connects to

the towns and cities in the national system of distribution of power, and the

versatility and simplicity of communication via radio frequency and/or via

satellites amateurs that uses the viral system APRS (Automatic, Position Radio

System), networks between computers and the satellite link.

Key Words:

Digital inclusion of distant towns, Social impact of the viral communication,

Telephony: voice on IP, TV on IP, Blogs and video-blogs, Cultural diversity and

democratization of the communication through computer, social Appropriation of the

technology

INTRODUCTION

Due to the great existing digital breach in our Country, it must to the access difficulty

to the Internet of a thickness of the Dominican population partly that lives in distant

places.

In our strategy of scientific work the following actions are declared: • a) The design of

a platform of Internet by PLC and APRS with viral networks by computers. • b) The

implementation of an electronic system of communication that makes possible the

access and the connection enters distant regions and towns, using the networks of

electrical distribution and the Radio frequency by wireless means. • c) To implement the

Technologies of the Information and the Communications (TICS) with the use of the

elements of agile and economic a viral network of computers, burglaryable.

2.0 METHOD

In future the methodologies and the components of the technologies for the

development of the platform appear: For the accomplishment of this project the method

of scientific research with the instruments of the bibliographical revision has been used,

the accomplishment of surveys and interviews, the search in the Web, the analysis of

experts and the experimentation of field. [UPM01] We have analyzed the theory on the

viral communication of the Dr. Andrew Lippman, that is the Founding Associate

Director of the recognized and influential International Means Laboratories of MIT.

[Media Lab 02] In his more than 30 years of race the Technological Institute of


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Massachusetts (MIT), has created several research programs about networks, radio

communication, interactivity, entertainment, personal computers and graphical. How

creative and head of the viral communications program of the laboratories and Co-

director of the Interdisciplinary program of the future communications in MIT, the Dr

Lippman is recognized like one of the main authorities world-wide level, in Viral

Communication, and how this one explosive and new discipline will generally

transform the industry of the telecommunications and the businesses. http://fct.dell-

events.com/latc/mexico/mexicocity/agenda/ The Dr. Lippman is one of the founders of

centers Media Lab was the technology for the developing world, work that continues

with projects like the One Laptop Rep Child project and other works.

2.1 STRUCTURE AND PARTS OF THE PLATFORM

Paradigm of the viral communication of computers 1

Fig.1 associative Connectivity ¨viral¨ of the platform Paradigm of the viral

communication of computers 2

Fig.2 Bandwidth and capacity of viral versus conventional nodes

The viral diffusion is burglaryable, and in addition it adds value. Intelligence is placed

in the ends, the costs are low, the systems are agile. Source: adapted of carrierless

Communications. Lippman_TWHK051123.

2.2 VIRAL NETWORK TIPS

• Free knowledge and viral networks like contagion strategy free Knowledge. • Keys

for an open society • Concept created by Andrew Lippman (MIT) • It is a


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communications network without infrastructure of communications. • It uses each

computer connected to her like host and reproducer of the communication flow. • The

users create their own infrastructure. • The communication takes place as a virus

scatters itself • Revolution: complete decentralization, logic and physics.

Fig.3 typical viral Cell 2.3

2.3 INNOVATION OF THE VIRAL NETWORKS

• burglaryable • Incrementals • Cooperatives

• The viral systems are innovating by their modularity and the distribution of their

capacity - intelligence is in the ends

• Examples: Internet, fax, Ethernet networks. [Universia 03]

2.4 Characteristics

• We became independent from the telephone infrastructure (last mile) to connect to us

• The viral network is more open to the innovations, is more flexible when not being

cradle in a central system

• It places intelligence in each knot of the connection, and not in the servant of a

supplier

• It has the capacity to autoconfigurate itself based on the number of connected

computers

Fig.4 viral Association of cells

• Each user is an antenna

• He will demand new algorithms that guarantee the continuity of information flow if

one of the nodes falls


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• The algorithm will have to be able to redirect the data flow towards other nodes

• The computers connected to the network work like retransmitters

• Whatever more computers are connected, smaller it will be the distance among them,

and better it will be the communication

• The viral network mesh has a topology

• Whatever more users, better

• With the broadband, each new connected computer tends to congest the traditional

network

• In the network mesh, whatever more machines are working in an area, more ways will

be available for the propagation of the communication, avoiding overloadings.

• The network mesh is a shared in common network that works better whatever more

machines share its connectivity

• Million children with laptops of 100 dollars-> enormous mass of retransmitters

necessary to make the viral communication viable.

2.5 APPLICATIONS

• Communitarian municipal networks/ • Roadcasting (http://roadcasting.org), • that

mesh tries to use networks • in order to transform cars into emitters • and music

receivers

• Examples of experiences • Roofnet (Cambridge) • Digital Tiradentes • Taipei (10,000

points of aceso: 90% of the city • Philadelfia (investment of of U$ 10 Ms to cover 217

km2s. • Players • Ember (Bob Metcalfe, father of Ethernet), Firetide, Tropos and

PacketHop, Motorola.

2.6 MORE VIRAL EXAMPLES

•Spreadsheets: More users => more applications • •Napster, Emulates: More users =>

more music available • •Skype: More users => more interchanges • Mesh technologies:

Skype • Application Peer-to-peer VoIP (voice on IP) • First version: October of 2003 • 7

mill. of users the first year, more than 50 at the moment • IM, Audio and video-

conference, mail of voice (voice-mail), etc • Open API; viral operation • Skype-out,

2004; Skype-in, 2005, Skype-cast 2006. • Bought by Ebay in September of 2005 by

$2.5/4.1 Billion • Viral growth

3.0 PRESENTATION OF THE TECHNICAL STRUCTURE THAT

SERVES AS SUPPORT OF THE PROJECT

3.1 CONNECTIVITY TO THE INTERNET BY PLC

In this section the schematic blocks of the control logic appear Web and some details of

the development of the prototypes, like some photos during the development of the

project with the students:


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Fig 5 conventional Architecture search in the Web

Fig.6 Implementation of prototypes

3.2 CONNECTIVITY TO THE INTERNET BY PLC AND APRS


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Fig 7 Typology of the complete propose communication structure by the author

Fig.8 Tests of communication of the prototypes


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Fig.9 Interchange of experiences for the development of abilities and competitions in

the investigating junniors students

4.0 FORMS IN WHICH THE SYSTEM WORKS

• In any electrical plug of the address through Modems PLC, all type of devices like

computers, printers, Telephony IP, Cameras Web and generally all the devices that

conform the applications of the denominated Domotics.

As the structuring of a new network LAN is observed does not need the assembly of

additional wirings but it already uses the existing mains of the address, this constitutes

one of the main advantages of technology PLC. • Systems PLC are typically

Symmetrical meaning that work in two-way traffic, are bidirectional.

When they are used the networks of average Tension for the transmission of the

electrical signal require additional devices denominated Baypass that allow when

coming out to pass the signal of RF of the entrance of Average Tension of Low Tension

in the transforming of distribution MT-BT.

4.1 DETAILS OF CONNECTIVITY IN THE HOMES

In the accountant of each home several possibilities can be presented/displayed. For the

case in that the access to Internet and telephony IP is only required, the signal it follows

until the final equipment (for example a computer), which is connected, through a

Modem PLC or Equipment of Abonnated (CPE) connected to any current taking of the

mains of the house or address. Modem PLC isolates the signal of electric power of •

60Hz, extracts the communication signal it demodulates and it extracting the data that

give (by means of an interface USB, wireless Ethernet or) to the terminal equipment. •

Another case that can appear is to place in the transformer a Gateway of the Home that

allows to structure a network LAN to the interior of the home. To this network they are

possible to be connected. [DataSAE 04].

4.2 DETAILS ON TECHNOLOGY PLC

Technology PLC uses the already existing networks of electrical distribution of loss and

Average Tension for the information and data transmission. The electrical energy

arrives at the users in the form of AC voltage from LF (50 or 60Hz) and in parallel way

the PLC uses carriers of high frequency (the usable band in the last covers from 1MHz


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to 45MHz and 200MHz equipment) to transport the data. As state of the technique we

have considered the works of Tecnocom, the company leader at world-wide level in

subjects of internetworking PLC. Tecnocom is to partner of DS2, a Valencian company

that has developed the technology of access by PLC, that is to say, DS2 are those that

have designed the Chips for modems PLC. Tecnocom uses as this technology and is the

company that later energetics contract to the companies: ENDESA, Iberdrola, etc that

wants to offer services of PLC (Power Line Communication). [Tecnocom 05].

http://www.consumer.es/web/es/tecnologia/internet/2005/07/21/143900.php.

4.3 SCHEMATIC DIAGRAM OF THE PLC

Fig. 10 schematics power line carrier (cortesy of archnetco)

4.4 MODEM FOR THE INTERFACES OF THE PLC

Present below we can observe what this plc company offer.[archnetco 06].


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Fig.11 modem interfaces (cortesy of archnetco)

5.0 BASIC EQUIPMENT - RADIO FOR APRS (System of Automatic

positioning by Radio).

Fig. 12 Transceiver Radio

These equipment makes possible the communication between the remote towns, serving

like connectors of the internet network; this is realised using a VHF Radio Transceiver

Amateur operating in 144.390 Mhz. (Dominican Rep.). In each one of the ends of the

communication system. [APRS 07] http://www.qsl.net/eb1frk/aprs.htm

5.1 TRANSCEIVING RADIO

The radius would have to be “to transceiver” that as system APRS uses to a system of

detection against collision to know how when to send the data. Its rank of cover will

depend on the power of the transmitter and the land.

5.2 CONNECTIVITY BY RADIO FREQUENCY TO THE INTERNET


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Fig.13 Connetivity cloud (cortesy of1frk/aprs)

5.3 LAYERS OF THE IP FOR APRS

Fig.14 Messages and Maps through a system APRS and the Internet with the

possibility of using satellites. (cortesy of archnetco)

6.0 CONCLUSIONS

The implementation of the propose platform allows to take the Internet us of economic

way to remote places from a pair of subscriber accounts and in addition it allows to the

following possibilities and make question us: • The viral possibilities allow economic

access to the Internet through great distances. • In the education: the students are those

that they innovate, the infrastructure makes more rigid to the system. •

Communications: Intelligence is now in the terminals, They will be marginalized the

suppliers? • Social appropriation of the technology. In the area of the health: the patients

as group knows more than the doctor. The psychologist average Lee only a magazine


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per month. • The Internet is not more than a tool than knowing as it works can remove

to major benefit and this is what I have learned investigating and I hope that is used for

future references.

7.0 BIBLIOGRAPHICAL REFERENCES

[UPM01] UPM, School of Mines. www.minas.upm.es. [consults: 25 March 2008].

[Media Lab 02]. MIT. http://fct.dell-events.com/latc/mexico/mexicocity/agenda/

[consults: 02 of April 2010]

[Universia 03] Universia, Network.

www.universia.edu.pe/noticias/principales/destacada.php?id=16338 [consults: 26

March 2008].

[DataSAE 04] DataSAE Ltda. Construction of Software. [consults: 02 of April 2010]

[Tecnocom 05]. Tecnocom,

http://www.consumer.es/web/es/tecnologia/internet/2005/07/21/143900.php. [consults:

02 of April 2010]

[archnetco 06]. MODEM FOR THE INTERFACES OF THE PLC .

http://archnetco.com/english/product/network.htm. [consults: 02 of April 2010].

[APRS 07]. Automatic radio position System, http://www.qsl.net/eb1frk/aprs.htm

[consults: 02 of April 2010]

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