Telecommunications – Carrier wave repeater or relay system – Portable or mobile repeater
Patent
1999-06-28
2000-09-19
Urban, Edward F.
Telecommunications
Carrier wave repeater or relay system
Portable or mobile repeater
455427, 455458, H04B 7185
Patent
active
061224839
ABSTRACT:
A satellite communication system provides multicast messaging services to subscriber units. Upon receipt of a multicast communication page from a satellite communication system network, a subscriber unit waits for a random delay period and then responds with an acknowledge signal. Based upon the time of receipt of the acknowledge signal, e.g., within one of a plurality of time periods, the satellite communication system network assigns the subscriber unit to one of a plurality of traffic channels. The satellite communication system infrastructure then sends a multicast communication message to the subscriber unit on the assigned traffic channel. The subscriber unit then waits for a random delay period and then responds with an acknowledge signal. The satellite communication system network then receives the acknowledge signal. Each of a plurality of subscriber units introduces a random delay before transmitting an acknowledge signal so that the satellite communication system network may determine which of the subscriber units received the multicast communication system message.
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Lo Wing F.
Maveddat Payam
O'Dell Stewart
Garlick Bruce
Harrison James
Milord Marceau
Nortel Networks Limited
Urban Edward F.
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