Data communication system using spectral overlay
First Claim
1. A data communication method for use in a radio system in which information is transmitted over channelized frequencies, each of which channels is adapted to carry a single stream of information, comprising the steps of:
- notching predetermined channels in a selected physical area; and
transmitting a single data stream divided across a plurality of channels simultaneously, but not transmitting said single data stream on the channels that are notched.
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0 Petitions
Accused Products
Abstract
A data communication system is provided for use with a cellular system containing an array of cells and a cellular transmitter/receiver located within each cell of the array. Each cellular transmitter/receiver is adapted for transmitting and receiving voice and/or data communication over predetermined channelized frequencies associated with the particular cell in which the cellular transmitter/receiver is located. In accordance with the invention a base data transmission station is located in each cell and is adapted for transmitting a single data stream across a plurality of channels, each of which channels is adapted to carry a single stream of information. Each base data transmitting station does not transmit on the predetermined channels that are assigned to the particular cell in which the base data transmitting station is located (i.e., those channels are "notched"). In one embodiment used channels that are carrying streams of information in adjacent cells are detected and the base data transmission station does not transmit over the frequencies of the used channels (i.e., the used channels are "notched"). In this manner, the single data stream transmitted by the base data transmitting station is transmitted over all of the channels of the cellular array except for the channels that are notched. The base data transmitting station also transmits a notching pattern, which is continuously updated, to mobile transmitters within the cell. The notching pattern comprises information concerning the channels in the cell that are notched and information concerning used channels of adjacent cells that are notched. The mobile transmitters in the cell will transmit a single data stream over all of the plurality of channels of the cellular array except for the notched channels.
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Citations
20 Claims
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1. A data communication method for use in a radio system in which information is transmitted over channelized frequencies, each of which channels is adapted to carry a single stream of information, comprising the steps of:
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notching predetermined channels in a selected physical area; and transmitting a single data stream divided across a plurality of channels simultaneously, but not transmitting said single data stream on the channels that are notched. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A data communication method for use in a cellular radio system capable of transmitting and receiving voice and/or data communication and including a plurality of adjacent cells with each cell having a cellular base transmitter for transmitting over predetermined channelized frequencies associated with the particular cell in which the cellular base transmitter is located, comprising the steps of:
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providing a base data transmitting station in each cell; programming each said base data transmitting station not to transmit in frequencies of the cell in which said base data transmitting station is located; and operating each base station to transmit a single data stream divided across a plurality of channels of frequencies of adjacent cells simultaneously but not to transmit over the frequencies of the cell in which said base data transmitting station is located. - View Dependent Claims (11, 12, 13)
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14. A data communication method for use with a cellular system containing an array of cells and a cellular transmitter/receiver located within each cell of said array, with each cellular transmitter/receiver being adapted for transmitting and receiving voice and/or data communication over predetermined channelized frequencies associated with the particular cell in which the cellular transmitter/receiver is located, which comprises the steps of:
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locating a base data transmission station in each cell for transmitting a single data stream across a plurality of channels, each of which channels is adapted to carry a single stream of information; notching the predetermined channels that are transmitted by the cellular transmitter/receiver within the particular cell in which the base data transmitting station is located; detecting used channels in adjacent cells that are carrying streams of information; notching said used channels whereby the base data transmission station within a particular cell is prevented from transmitting in said used channels; and transmitting a single data stream by the base data transmitting station divided over substantially all of said plurality of channels simultaneously, but not transmitting said single data stream on the channels that are notched. - View Dependent Claims (15)
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16. A data communication method for use with a cellular system containing an array of cells and a cellular transmitter/receiver located within each cell of said array, with each cellular transmitter/receiver being adapted for transmitting and receiving voice and/or data communication over predetermined channelized frequencies associated with the particular cell in which the cellular transmitter/receiver is located, which comprises the steps of:
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locating a base data transmission station in each cell and adapted for transmitting a single data stream across a plurality of channels, each of which channels is adapted to carry a single stream of information; detecting used channels that are carrying streams of information; notching said used channels whereby the base data transmission station within a particular cell is prevented from transmitting in said used channels; and transmitting the single data stream divided over a plurality of channels simultaneously while not transmitting the single data stream on the channels that are notched.
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17. A data communication method for use in a radio system in which information is transmitted over a plurality of channelized frequencies, each of which channels is adapted to carry a single stream of information, comprising the steps of:
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detecting channels carrying information; notching channels carrying information; and transmitting a single data stream divided across a plurality of channels simultaneously, but not transmitting said single data stream on the channels that are notched. - View Dependent Claims (18, 19, 20)
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Specification