Mobile Tech, Inc.

Masanori Yofune

Yasuharu Amezawa

Atsuhiko Sugitani

Satoshi Sonobe

Masayuki Suto

A wireless communication device includes a processor. The processor estimates a quality of a received signal that is transmitted from a source device. The processor determines a communication parameter for a next communication transaction based on an evaluation value that indicates a result of subtracting a second value from a first value, the first value being determined based on a coding rate and a data length of a data signal received from the source device, the second value being determined based on the data length, a modulation scheme and a quality of the data signal. The processor reports the communication parameter to the source device.

Wireless communication device and communication parameter report method

A wireless communication system, in which a redundancy bit is transmitted from a first communication device to a second communication device when the second communication device fails to decode the encoded bits, includes a processor. The processor selects communication patterns that respectively satisfy a requested quality, calculates, for each of the selected communication patterns, a transmission data length that indicates a length of the redundancy bit, calculates, for each of the selected communication patterns, a transmission latency between the first communication device and the second communication device based on the calculated transmission data length, and generates a retransmission parameter corresponding to a communication pattern with lowest transmission latency among the selected communication patterns. The first communication device transmits the redundancy bit according to the retransmission parameter, and the second communication device decodes the encoded bits by using the redundancy bit according to the retransmission parameter.

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Ota, Japan

Masanori Yofune