Cognitive Radio Transmission
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Abstract
A method, an apparatus, and a computer program for performing cognitive communications in a radio environment are presented. First, a radio communication device estimates a time-varying interference environment in a radio communication channel. On the basis of the estimation, a future interference environment is predicted from time-varying characteristics of the estimated interference. Upon predicting the future interference environment, a radio transmitter is configured to apply transmission parameters to be used in a future transmission time instant for which the interference environment has been predicted. As a consequence, the transmission parameters are selected proactively to match with the predicted interference environment. The transmission parameters may be configured as time-variant.
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Citations
49 Claims
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1-29. -29. (canceled)
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30. A method, comprising:
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estimating a time-varying interference environment in a radio communication channel; predicting a future time-varying interference environment from time-varying characteristics of the estimated time-varying interference environment; encoding a time-variant parameter wherein a single value of the time-variant parameter defines at least one transmission parameter for a plurality of sections of a future transmission time instant for which the future time-varying interference environment has been predicted, wherein the time-variant parameter is reflective of time-variance during the future transmission time instant; and configuring proactively a radio transmitter to apply said time-variant parameter to be used in the plurality of sections. - View Dependent Claims (31, 32, 33, 34, 35, 36)
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37. An apparatus comprising:
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at least one processor; and at least one memory including computer program code; said at least one memory and said computer program code configured to, with said at least one processor, cause said apparatus to perform at least the following; estimate a time-varying interference environment in a radio communication channel; predict a future time-varying interference environment from time-varying characteristics of the estimated time-varying interference environment; encode a time-variant parameter wherein a single value of the time-variant parameter defines at least one transmission parameter for a plurality of sections of a future transmission time instant for which the future time-varying interference environment has been predicted, wherein the time-variant parameter is reflective of time-variance during the future transmission time instant; and configure proactively a radio transmitter to apply said time-variant parameter to be used in the plurality of sections. - View Dependent Claims (38, 39, 40, 41, 42, 43)
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44. A non-transitory computer readable memory comprising a computer program code which, when executed by an apparatus including a processor and a memory, is configured to cause the apparatus to:
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estimate a time-varying interference environment in a radio communication channel; predict a future time-varying interference environment from time-varying characteristics of the estimated time-varying interference environment; encode a time-variant parameter wherein a single value of the time-variant parameter defines at least one transmission parameter for a plurality of sections of a future transmission time instant for which the future time-varying interference environment has been predicted, wherein the time-variant parameter is reflective of time-variance during the future transmission time instant; and configure proactively a radio transmitter to apply said time-variant parameter to be used in the plurality of sections. - View Dependent Claims (45, 46, 47, 48, 49)
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Specification