H - Electricity – 04 – H
Patent
H - Electricity
04
H
H04H 20/67 (2009.01) H04J 3/06 (2006.01) H04L 7/033 (2006.01) H04H 3/00 (2006.01)
Patent
CA 2114554
A simulcast system capable of synchronizing and main- taining synchronization of a plurality of base sites (1602, 1604 1606, 1608). The base sites (1602, 1604, 1606, 1608) are cap- able of transmitting data at substantially the same time. A gen- erator generates time marks ( 1708) at a predetermined time pe- riod(T). A data divider (1812) divides packets to be interposed between at least a pair of time marks. The data packets (1704) and time marks (1708) are transmitted to the base sites. The base sites include base site receivers (1603, 1605, 1607, 1609) for receiving the data packets and time marks and clocks (1611, 1613, 1615, 1617) for measuring the time (T) between each pair of time marks. Base sites controllers (1612, 1614 1616, 1618) determine the variations in time between any pair of time marks and the predetermined time period (T). Timers adjust the delay time at each of the base sites in response to the variations at each corresponding base site, and delay re- transmission of data by a predetermined delay time for each of the base sites to enable the retransmission of data at sub- stantially the same time.
Gowling Lafleur Henderson Llp
Motorola Inc.
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