| CPC H04B 7/0632 (2013.01) [H04B 7/0408 (2013.01); H04W 4/023 (2013.01); H04W 64/00 (2013.01)] | 14 Claims |
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1. A communication device, comprising:
at least one processor configured to control transmission and reception of signals by at least first and second antennas in conformity with a specific communication standard,
wherein the processor controls a mode for transmission and reception of the signals by the first and second antennas in accordance with the signals transmitted to and received from a second communication device,
the signals transmitted and received are for a process of estimating a positional relation between the communication device and the second communication device,
when a multi-path environment of a signal received by a first one of the first and second antennas does not satisfy a predetermined reference, the processor performs control such that a second one of the first and second antennas transmits and receives the signals,
the processor is further configured to calculate a reliability parameter indicating an index of whether the signals transmitted and received by the first or second antenna are appropriate for use to estimate the positional relation;
the processor is further configured to determine, as a determination result, whether the signals used to calculate the reliability parameter are appropriate for use to estimate the positional relation, based on the reliability parameter, and
the processor controls the mode for transmission and reception of the signals by the first and second antennas based on the determination result.
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