Nationwide communication system
DC
First Claim
Patent Images
1. A mobile unit for transmitting and receiving radio frequency signals to and from a communications network comprising:
- means for receiving a radio frequency message from the network;
a display for displaying said message;
a switch actuatable to specify a portion of the displayed message for which a user desires retransmission from the communications network;
means for transmitting, only upon actuation of the switch, a signal to the communications network requesting retransmission of said specified portion of said message; and
means for receiving said specified portion retransmitted from the communications network and for displaying the received specified portion on the display.
10 Assignments
Litigations
4 Petitions
Accused Products
Abstract
A two-way communication system for communication between a system network and a mobile unit. The system network includes a plurality of base transmitters and base receivers included in the network. The base transmitters are divided into zonal assignments and broadcast in simulcast using multi-carrier modulation techniques. The system network controls the base transmitters to broadcast in simulcast during both systemwide and zonal time intervals. The system network dynamically alters zone boundaries to maximize information throughput. The system also uses a mobile unit which receives messages from the network and transmits messages to the network. The mobile unit includes a switch that allows a user to request the network to retransmit a received message that contains errors.
39 Citations
9 Claims
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1. A mobile unit for transmitting and receiving radio frequency signals to and from a communications network comprising:
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means for receiving a radio frequency message from the network; a display for displaying said message; a switch actuatable to specify a portion of the displayed message for which a user desires retransmission from the communications network; means for transmitting, only upon actuation of the switch, a signal to the communications network requesting retransmission of said specified portion of said message; and means for receiving said specified portion retransmitted from the communications network and for displaying the received specified portion on the display. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A communications network for transmitting radio frequency signals to a mobile unit and for receiving radio frequency signals from the mobile unit, the mobile unit having a display and a switch actuatable to specify a portion of a displayed message for which a user desires retransmission after viewing the displayed message transmitted from the communications network, the network comprising:
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means for transmitting radio frequency signals containing a message to the mobile unit; means for receiving, from the mobile unit, radio frequency signals representing a portion of the message that the user desires retransmission; means for retransmitting radio frequency signals containing the portion of the message to the mobile unit.
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8. A method for receiving and transmitting messages at a mobile unit, comprising the steps of:
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receiving at the mobile unit a radio frequency message; displaying said message on the mobile unit; receiving an indication of a portion of the displayed message for which a user desires retransmission; transmitting, only upon receipt of the indication, a signal requesting retransmission of said indicated portion of said message; receiving a retransmission of said indicated portion; and displaying the received retransmission of said indicated portion on the mobile unit. - View Dependent Claims (9)
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Specification
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Litigation Data
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Current AssigneeMobile Telecommunications Technologies, LLC (Mobitex Technology AB)
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Original AssigneeMobile Telecommunications Technologies, LLC (Mobitex Technology AB)
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InventorsHays, William D., Ackerman, David W., Cameron, Dennis Wayne, Roehr, Walter Charles, Petrovic, Rade, Bhagat, Jai P., Garahi, Masood
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Primary Examiner(s)Eisenzopf, Reinhard J.
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Assistant Examiner(s)LE, THANH C
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Application NumberUS08/124,219Time in Patent Office1,701 DaysField of Search455/33.1, 455/54.1, 455/54.2, 455/56.1, 455/69, 455/88, 455/422, 455/423, 455/424, 455/425, 455/517, 455/524, 455/32.1, 455/38.1, 455/38.4, 455/67.1, 455/67.7, 370/95.3, 370/235, 370/236, 370/252, 370/522, 340/825.44, 340/311.1US Class Current340/7.22CPC Class CodesH04H 20/67 Common-wave systems, i.e. u...H04L 27/2626 Arrangements specific to th...H04L 27/2637 with direct modulation of i...H04L 27/2647 Arrangements specific to th...H04W 4/12 Messaging; Mailboxes; Annou...H04W 68/00 User notification, e.g. ale...H04W 68/10 using simulcast notificationH04W 84/022 One-way selective calling n...H04W 84/025 with acknowledge back capab...
