Apparatus and method for allocating data bursts in a broadband wireless communication system
First Claim
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1. A transmission method in a broadband wireless communication system, comprising the steps of:
- calculating a cell load using information about data bursts to be transmitted;
comparing the cell load with a threshold; and
adjusting a data region based on the cell load such that a subchannel occupation rate is uniform over an entire data burst transmission time period, if the cell load is less than the threshold.
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Abstract
An apparatus and method for adjusting a data region to which data bursts are allocated in a broadband wireless communication system are provided. A cell load is calculated using information about data bursts to be transmitted and then compared with a predetermined threshold. A data region is adjusted based on the cell load such that a subchannel occupation rate is uniform over an entire data burst transmission time period, if the cell load is less than the threshold.
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Citations
21 Claims
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1. A transmission method in a broadband wireless communication system, comprising the steps of:
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calculating a cell load using information about data bursts to be transmitted;
comparing the cell load with a threshold; and
adjusting a data region based on the cell load such that a subchannel occupation rate is uniform over an entire data burst transmission time period, if the cell load is less than the threshold. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A reception method in a broadband wireless communication system, comprising the steps of:
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determining if data region adjustment information exists in a received resource allocation message;
receiving data bursts in an adjusted data region indicated by the data region adjustment information, if the data region adjustment information exists; and
receiving data bursts in a data region allocated for a predetermined symbol permutation mode, if the data region adjustment information does not exist. - View Dependent Claims (8, 9, 10)
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11. A transmission method in a broadband wireless communication system, comprising the steps of:
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calculating a cell load using information about data bursts to be transmitted in a hybrid automatic repeat request (HARQ) mode;
setting a data region according to the cell load;
transmitting a resource allocation message including information about the data region;
sequentially allocating the data bursts in the data region; and
transmitting the data bursts. - View Dependent Claims (12, 13)
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14. A transmitter in a broadband wireless communication system, comprising:
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a scheduler for adjusting a data region such that a subchannel occupation rate is uniform over an entire data burst transmission time period, if a cell load is less than the threshold;
a mapper for mapping transmission data to subchannels of the adjusted data region; and
an inverse fast Fourier transform (IFFT) processor for generating an IFFT signal by IFFT-processing the mapped data. - View Dependent Claims (15, 16, 17, 18)
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19. A receiver in a broadband wireless communication system, comprising:
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a controller for receiving a resource allocation message including information about a data region adjusted according to a cell load, and generating a control signal to receive data in the adjusted data region;
a fast Fourier transform (FFT) processor for FFT-processing a received signal and outputting subcarrier values; and
a demapper for extracting subcarrier values with actual data among the subcarrier values received from the FFT processor. - View Dependent Claims (20, 21)
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Specification