CPC H04L 27/26265 (2021.01) [H04L 5/0092 (2013.01); H04L 27/2605 (2013.01); H04L 27/26414 (2021.01)] | 20 Claims |
1. An apparatus comprising:
circuitry configured to
perform radio communication;
transmit to an external apparatus through the radio communication control information regarding a resource to be used in the radio communication:
select a filter application unit from a plurality of candidates, wherein each of the plurality of candidates comprises a subcarrier bandwidth and a symbol length, and the filter application unit represents a minimum time-frequency unit to which a filter is applied;
divide a bit stream into a plurality of units, each of the plurality of units having a size of the selected filter application unit;
apply the filter to each of the plurality of units to generate a plurality of filtered units; and
add the plurality of filtered units to generate a signal for transmission,
wherein the control information is transmitted to the external apparatus, and the control information is used by the external apparatus to set the width of a guard band around the signal.
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