| CPC H04B 7/0682 (2013.01) [H04B 7/0413 (2013.01); H04L 5/0033 (2013.01)] | 20 Claims |

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1. An apparatus, comprising:
a transceiver coupled to a plurality of radio frequency channels, wherein the plurality of radio frequency channels are coupled to all antennas in an antenna array in a one-to-one manner, each of the plurality of radio frequency channels comprises a phase shifter, and each phase shifter is configured to set a phase of a radio frequency signal transmitted in the radio frequency channel in which the phase shifter is comprised; and
the antenna array, wherein the antenna array comprises a plurality of first antennas and a plurality of second antennas, the plurality of first antennas is configured to transmit a plurality of radio frequency signals of a first band, to form a first carrier signal pointing to a first direction, the plurality of second antennas is configured to transmit a plurality of radio frequency signals of a second band, to form a second carrier signal pointing to a second direction, and an inter-band carrier aggregation signal comprises the first carrier signal and the second carrier signal.
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