Method and system for transmitting a signal comprising preamble and a data frame
First Claim
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1. A method of transmitting a signal comprising a preamble and a data frame in a communications network including a plurality of nodes, each node comprising a device for sending and receiving signals which is deactivated and reactivated alternately, a time between two consecutive reactivations of the device corresponding to a predetermined deactivation period, wherein the method comprises the steps of:
- generating a signal with a preamble that includes a numbered sequence of microframes, the numbering of the microframes of said sequence being such that the number of any of the microframes makes it possible to deduce the remaining number of microframes in the sequence before the data frame; and
sending the signal via the network,wherein a time between a first microframe of said sequence of microframes and a final microframe thereof is greater than or equal to said predetermined deactivation period.
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Abstract
A system, a device, and a method for transmitting a signal (11) comprising a preamble and a data frame (13) by preamble sampling in a communications network including a plurality of nodes (1a, 1b), said preamble including a numbered sequence of microframes (19).
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Citations
11 Claims
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1. A method of transmitting a signal comprising a preamble and a data frame in a communications network including a plurality of nodes, each node comprising a device for sending and receiving signals which is deactivated and reactivated alternately, a time between two consecutive reactivations of the device corresponding to a predetermined deactivation period, wherein the method comprises the steps of:
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generating a signal with a preamble that includes a numbered sequence of microframes, the numbering of the microframes of said sequence being such that the number of any of the microframes makes it possible to deduce the remaining number of microframes in the sequence before the data frame; and sending the signal via the network, wherein a time between a first microframe of said sequence of microframes and a final microframe thereof is greater than or equal to said predetermined deactivation period. - View Dependent Claims (2, 3, 4)
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5. A signal-generating device for sending a signal comprising a preamble and a data frame in a communications network including a plurality of nodes, each node comprising a device for sending and receiving signals which is deactivated and reactivated alternately, a time between two consecutive reactivations of the device for sending and receiving signals corresponding to a predetermined deactivation period, the signal-generating device comprising:
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a generator which generates a signal with a preamble that includes a numbered sequence of microframes, the numbering of the microframes of said sequence being such that the number of any of the microframes makes it possible to deduce the remaining number of microframes in the sequence before the data frame, wherein a time between a first microframe of said sequence of microframes and a final microframe thereof is greater than or equal to said predetermined deactivation period.
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6. A computer program stored on a computer memory and executing on a processor of a signal-generating device, which causes the processor to execute steps for sending a signal comprising a preamble and a data frame in a communications network including a plurality of nodes, each node comprising a device for sending and receiving signals which is deactivated and reactivated alternately, a time between two consecutive reactivations of the device for sending and receiving signals corresponding to a predetermined deactivation period, the computer program comprising program instructions for:
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generating a signal with a preamble that includes a numbered sequence of microframes, the numbering of the microframes of said sequence being such that the number of any of the microframes makes it possible to deduce the remaining number of microframes in the sequence before the data frame when the program is executed by the signal-generating device, wherein a time between a first microframe of said sequence of microframes and a final microframe thereof is greater than or equal to said predetermined deactivation period. - View Dependent Claims (7, 11)
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8. A device for receiving a signal sent via a communications network, said signal comprising a preamble including a numbered sequence of microframes and a data frame, the device being deactivated and reactivated alternately, a time between two consecutive reactivations of the device corresponding to a predetermined deactivation period, the numbering of the microframes of said sequence being such that the number of any of the microframes makes it possible to deduce the remaining number of microframes in the sequence before the data frame, comprising:
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a controller which, on reception of a microframe of a signal, reads the sequence number of the received microframe, determines from the read sequence number the time of arrival of the data frame of the signal, and commands deactivation of the device following reception of the microframe and then its reactivation in order to receive said data frame, wherein a time between a first microframe of said sequence of microframes and a final microframe thereof is greater than or equal to said predetermined deactivation period.
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9. A computer program stored on a computer memory and executing on a processor of a device, which causes the processor to execute steps for receiving a signal sent via a communications network, the device being deactivated and reactivated alternately, a time between two consecutive reactivations of the device corresponding to a predetermined deactivation period, said signal comprising a preamble including a numbered sequence of microframes and a data frame, the numbering of the microframes of said sequence being such that the number of any of the microframes makes it possible to deduce the remaining number of microframes in the sequence before the data frame, the computer program comprising program instructions for:
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reading, on reception of a microframe of a signal, the sequence number of the received microframe, determining the time of arrival of the data frame of the signal, and deactivating the device following reception of the microframe and then its reactivation in order to receive said data frame, wherein a time between a first microframe of said sequence of microframes and a final microframe thereof is greater than or equal to said predetermined deactivation period. - View Dependent Claims (10)
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Specification