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1 total messages Started by t Sun, 18 Jan 1998 00:00
DIRC (do without Telecom!)
#2
Author: t
Date: Sun, 18 Jan 1998 00:00
146 lines
8003 bytes
Ever though of phoning (and surfing) without Telecom?

This man: "Winrich Hoseit" has "invented" a system where every users
phone is its own local exchange as well.

One just buys a DIRC for 500 bucks and never pays a telephone bill
again.

Its a wireless system .. a little box with a 2W transmitter
which has a range of a few kilometers ...

I saw a computer simulation of the DIRC system... it works very well
in cities, because the large number of users. There are bottlenecks
on the country-side, but these are easily overcome by a few strategic
fibre-opto links between the centres.

Here a "babelfish" translation of the original german text from:
http://www.vdi-nachrichten.com/Redaktion/Aktuell/t1997_9_12_0006.html


-----------------attention---robot-translated!-----------

DIRC

             Digital Inter Relay Communication
       (BTW: VDI is the "club of german engineers")

Telecommunications: Cologne inventor wants to
change the communication world with " radio crates "

Telephone for telephone a neural network 

VDI news, 12. 9. 97 - Intelligent radio
communications could revolutionize the network technique. As the
telephones themselves become switching centers, quasi networks can be
structured, believes a Cologne entrepreneur, and with it some
university professors. An attractive version - particularly for
alternative operators. Digitally inter Relay Communication, or
briefly " DIRC ", then calls itself a new technique, which could
place the past system of the structure of network on the heading.


If it would go according to its inventor Winrich
Hoseit, then the world of all communicating could do without central
Vermittlungstellen. Those grey boxes, nodal points, which control
unnoticed the way of all telephone calls and data, belonged to the
past. Because, then Hoseit its paradigm change rings: " good would be
it nevertheless, if the individual telephones could take up directly
contact together and among themselves. " An idea, which became for a
Cologne entrepreneur the Hoseit the program of its young company:
Each telephone should be terminal and switching center at the same
time. But a " radio crate " was devised. " with many of these crates
", then he explains, " can a neural network be built, in everyone
with everyone time-independently contact to be established can. "


                  Hoseit knows that one cannot lift such radical
paradigm changes alone. Therefore it insured itself in time the
Phalanx of renowned scientists, who acknowledge all together the
feasibility of its idea. Also a feasibility study of the Cetecom,
meal, a certification house for GSM and DECT systems, gives it right.
That enabled, DIRC into each branching to it to think each problem
and each eventuality out. Already the industry announced, so for
instance active interest in this technology Motorola, Nokia,
Panasonic and Siemens.


                  The principle " digitally of the inter Relay
Communication " demonstrates daily Internet: In it ad hoc any data
links between computers are switched. " the difference between the
Internet and a network of DIRC stations consists of the fact that
with latter each individual station for itself a communication
computer represents, explains " to Hoseit, which already announced
its technique at the federal patent office. Three substantial
differences to past telephone and data networks coin/shape DIRC: The
peripheral network of such crates regulates itself, as connections
are connected through over many stations, the individual stations
among themselves generally takes up by radio connection, and there is
no of the quantity depending rating. Thus thus also the so far
dominant account could belong to the past after discussion times.


                  With DIRC one buys - for instance at a price of
approximately 500 DM - or borrows themselves such a " crate " (see
figure). A connection from A to B is upward structured on quasi in
virtual channels with a bundlable capacity of 40 kbit/s, as the
network computer asks A in a central data base for the GPS co-ords of B,
and then the respective
neighbour stations for connecting through after B " asks ". The whole
functions safely only, if a network is put of such DIRC stations,
whose individual nodes may not be removed further as 5 km. So far
radio communication is enough. Each station can manage thereby up to
105 connections parallel. Urban networks are obvious.


"Naturally is it a central question, as well one a
self regularization necessary for such a system to execute can ",
vacates professor Hermann Rohlingof the specialist area communications
technology of Technical University Braunschweig in. " I am optimistic
nevertheless here.
"Rohling supports DIRC within the area of the necessary modulation
procedures. Further professors at the University of Muenster,
Siegen and Wuppertal dedicate themselves to the Routingprozeduren,
the simulation and the antenna development. " important is now to
transfer the clear vision step for step into the reality ", reminds
Mahn.

                  Still there are no prototypes. And some few would
be no good, because the catch is that the number of the
linkage possibilities grows with the number of the customers. For
market opening it requires thus a strong initial-ignition. Therefore
the DIRC of system requested an attempt network for the population
centre Rhine Ruhr Wupper with the post office Ministry. The institute
for national medium North Rhine-Westphalia supports the release of 700
to 790 the mc/s band for instance.


The logic of the DIRC network has above all charm
for Otelo and other Telekom competitors on the deregulated
telecommunications market. These could connect developing, urban DIRC
communications-islands over own glass fiber lines and create quasi over
night ... a new network.

The individual telephone customer gets a box with
an antenna with the new technology on his desk. This holds the
connection to the other stations and to the government inspection
department satellite, so that each user can be determined by unique
target coordinates. The box indicates the different interfaces such
as TAE, Western digitally output for ISDN, the computer interfaces
R-S 232 or PCMCIA for the link of external devices. " one knows,
insures natural with its PC also so in Internet " Hoseit. " with a
bundling of two channels one is more rapid already than with the 64
kbit/s with ISDN. "

Except Telefonie thus any data communication is possible. Bottlenecks
as in the Internet are not to be feared with DIRC, insure professor
Wolfram M. Lippe of the specialist area computer science of the
University of cathedral: " the data communication in the Internet
functioned package-oriented, with DIRC has each current connection a
line for itself alone. " Each new user brings in besides new
channels. Once if the shortest way, approximately clogged by quarter
A to quarter B, is by high data arising, the system looks itself up
evenly alternate routes over the peripheral device. " we will be able
to point to Simulationen to end of the yearly that the principle
gives itself functioned ", lip. ULRICH SCHMITZ/rb
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