H - Electricity – 04 – B
Patent
H - Electricity
04
B
H04B 7/185 (2006.01) H04H 20/67 (2009.01)
Patent
CA 2055327
SATELLITE CONTROL LINK FOR PAGING SYSTEM ABSTRACT OF THE DISCLOSURE A paging system includes a satellite uplink (40) for assembling paging information and transmitting it to a satellite (26). The satellite (26) is then operable to transmit in a simulcast manner all the information to various regional paging systems (42). Each of the paging systems (42) includes a plurality of towers (10) each containing a satellite receiver (50), a satellite dish (48) associated therewith and a paging transmitter (52). Each of the satellite receivers (50) are operable to receive the information transmitted from the satellite (26) at substantially the same time such that there is no phase difference between any of the towers, regardless of location. Therefore, the transmitters (50) can transmit through antennas (12) information at the paging frequency with substantially no relative delays relative to each of the antennas (12). A backup link receiver (28) is provided for interfacing with a backup link transmitter (70). In the event of a failure of the receivers (50) or the satellite (26), the link transmitter (70) will transmit the paging information directly to select ones of the towers (10) over a separate frequency.
Linquist Roger D.
Lorang Malcolm M.
Motorola Inc.
Riches Mckenzie & Herbert Llp
LandOfFree
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