Energy-efficient uplink slot allocation in time-frequency division multiple access systems
First Claim
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1. A method for communication, comprising:
- accepting a request from a transmitter to transmit data to a receiver in a multiple-access communication system that uses multiple subcarriers;
calculating a highest number of the subcarriers, that will together not exceed a predetermined signal power capability of the transmitter when the subcarriers are used by the transmitter simultaneously for transmitting the data;
allocating to the transmitter a time-frequency allocation containing the calculated highest number of the subcarriers; and
transmitting the data from the transmitter to the receiver using the allocated time-frequency allocation.
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Abstract
A method for communication includes accepting a request from a transmitter to transmit data to a receiver in a multiple-access communication system that uses multiple subcarriers. A maximum number of the subcarriers on which the transmitter may transmit the data simultaneously without violating a predetermined signal power criterion is calculated. The transmitter is allocated a time-frequency allocation containing the maximum number of the subcarriers. The data is transmitted from the transmitter to the receiver using the allocated time-frequency allocation.
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Citations
24 Claims
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1. A method for communication, comprising:
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accepting a request from a transmitter to transmit data to a receiver in a multiple-access communication system that uses multiple subcarriers; calculating a highest number of the subcarriers, that will together not exceed a predetermined signal power capability of the transmitter when the subcarriers are used by the transmitter simultaneously for transmitting the data; allocating to the transmitter a time-frequency allocation containing the calculated highest number of the subcarriers; and transmitting the data from the transmitter to the receiver using the allocated time-frequency allocation. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A base station in a multiple access communication system that uses multiple subcarriers, comprising:
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a receiver, which is arranged to accept a request to transmit data from a user terminal of the communication system; and a processor, which is arranged to calculate a highest number of the subcarriers, that will together not exceed a predetermined signal power capability of the user terminal when the subcarriers are used by the user terminal simultaneously for transmitting the data, and to allocate a time-frequency allocation containing the calculated highest number of the subcarriers to the user terminal, so as to enable the user terminal to transmit the data in the allocated time-frequency allocation. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20, 21, 22)
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23. A computer software product for communication in a base station of a multiple access communication system that uses multiple subcarriers, the product comprising a computer-readable medium, in which program instructions are stored, which instructions, when read by a computer, cause the computer to accept a request to transmit data from a user terminal of the communication system, to calculate a highest number of the subcarriers, that will together not exceed a predetermined signal power capability of the user terminal when the subcarriers are used by the user terminal simultaneously for transmitting the data, and to allocate a time-frequency allocation containing the calculated highest number of the subcarriers to the user terminal, so as to enable the user terminal to transmit the data in the allocated time-frequency allocation.
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24. A multiple access communication system that uses multiple subcarriers, comprising:
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a transmitter, which is arranged to submit a request to transmit data and to transmit the data in a time-frequency allocation allocated to the transmitter responsively to the request; and a receiver, which is arranged to accept the request, to calculate a highest number of the subcarriers, that will together not exceed a predetermined signal power capability of the transmitter when the subcarriers are used by the transmitter simultaneously for transmitting the data, and to allocate the time-frequency allocation containing the highest number of the subcarriers to the transmitter.
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Specification