Patent ID: 9312940
Filing Date: 2016-04-12
CPC Classification: H04B,H04W

Claim Text:
1. A communication device comprising: a first radio communication unit capable of radio communication, utilizing at least one antenna, in accordance with a first communication method; and a second radio communication unit capable of radio communication, utilizing at least one antenna, in accordance with a second communication method using millimeter waves and which is different than the first communication method, wherein the first radio communication unit is configured to, upon receiving in accordance with the first communication method an instruction signal instructing to learn a beam directionality, determine a reception start time point of a beam reference signal based on the instruction signal, the second radio communication unit starts reception, in accordance with the second communication method, of the beam reference signal from the reception start time point determined by the first radio communication unit and determines a parameter value for specifying an optimum beam pattern based on the received beam reference signal, the millimeter waves used for radio communication by the second communication method are of higher frequency than frequencies used by the first communication method for radio communication, the instruction signal contains information that specifies the reception start time point which is a time at which the second radio communication unit is to begin receiving the beam reference signal, and the first radio communication unit and the second radio communication unit are each controlled by at least one processor.