CPC H04B 5/0031 (2013.01) [H04B 5/0037 (2013.01); H04B 5/0075 (2013.01); H04B 17/11 (2015.01); H04B 17/21 (2015.01)] | 24 Claims |
1. A method of operating a first device, the method comprising:
calibrating a duration of a periodic step of activation of a near-field communication circuit of the first device according to
a time interval between an activation of the near-field communication circuit and a reception, by the first device, of a message transmitted by a second device, and
a duration margin.
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