Assignment title: WIRELESS NETWORKS .
2 Wireless Metropolitan Area Networks (WMANs) P.
3 Wireless Personal Area Networks (WPANs) P. 16.
7.1.4 Wireless Wide Area Networks (WWANs) P. 16.
8. Company Side P. 17.
8.1 What Exactly The Enterprise Needs P. 17.
9. References P. 19.
Thesis Topic:.
Can a complete wireless network live up to the expectations of a number of companies? .
WIRELESS COMMUNICATION GROWS.
The need of communication with points found beyond the horizon and without the support of telecommunications wires for the transmission of information, was not regularly created short afterwards the discovery of wireless distribution, around in the dues 1800. The first system of mobile telephony was installed by the Marconi at 1898 in the island Wight of England, on behalf of the King Victoria's.
It deserves here to mark that the modern wireless digital communication began from the islands of Hawaii where the telephone system was insufficient and should is found certain other solution.
Short afterwards the Second World War, the Laboratories Bell (Bell Laboratories) undertook a program for benefit of communication services with systems which used common institution (common carrier), so that are served a lot of users together moved in different geographic bands. This service was registered in the FCC with the name Public Internal Service of Land Mobile Radios of Communications (Domestic Public Land Mobile Radio Service - DPLMRS). Service DPLMRS undertook the below two systems:.
• First of them it functioned in 1946 for the cover of communication needs of users which was moved inside the city of St. Louis, using three radio-channels in the band of 150 MHz. It should be marked that in the authority the FCC had registered six radio-channels for the cover of needs, but because the used transceivers of were not high technology (for that season) were observed intense problems from interjections of neighbouring radio-channels of (channels) in the same geographic band, therefore finally were only used the three radio-bus.
