Fujitsu Corporation

Yuka Araikawa

Atsushi Tanaka

Akihide Otonari

Syuuichi Murata

Junichi Niimi

Takahiro Matusaki

Kazuhisa Obuchi

A radio communication apparatus (mobile station) in which analysis is performed on the transmission of data to an external apparatus. A mobile station transmitting the CQI information used for adaptive modulation control in the radio base station comprises a supervising unit operable to supervise a staying condition of data to be transmitted to an external apparatus, a CQI generating unit for generating the CQI information reflecting the result of a supervising process by the supervising unit, and a transmitting unit for transmitting the generated CQI information to the radio base station, and a mobile station for sending a re-transmission request reflecting the result of the supervising process.

Radio communication apparatus, and mobile station

The present invention, focusing on the fact that sometimes the channel (HS-SCCH) which notifies that data is to be transmitted will be received but it will be misdetected that there was a notification addressed to the receiving station, is to effectively utilize the channel (HS-SCCH) via which notification is conducted even in cases where the reception result is transmitted repeatedly. An HSDPA-compatible mobile station which, upon detecting that a message addressed to that mobile station was transmitted via HS-SCCH, receives the corresponding HS-PDSCH sub-frame, and which, when transmitting the reception result, repeats the transmission of said reception result n times, said mobile station being characterized in that it comprises a control unit which provides control such that reception processing is performed on the second sub-frame that comes next after the first sub-frame of HS-SCCH on which said detection was performed.

Mobile station

A mobile station receives a first datum and transmits a first reception result with a first timing when a first notification was received via a channel which notifies that data is to be transmitted, and receives a second datum and transmits a second reception result with a second timing when a second notification with a different timing was received via said channel, said mobile station being characterized in that it comprises: a repeat transmission unit which, upon receiving said first notification, transmits said first reception result with said first timing, and repeats the transmission with said second timing; and a control unit which imposes a restriction on the reception processing control of said second notification when said first notification has been received.

To provide a radio communication apparatus and a mobile station sensitive to change in the radio environment. A mobile station corresponding to the HSDPA and transmitting the CQI information used for the adaptive modulation control executed by a radio base station, comprising a radio environment supervising unit for supervising change in the radio environment on the basis of the received signal from the radio base station, a CQI generating unit for generating the CQI information reflecting change in the reception quality from the radio base station in accordance with the result of supervising by the supervising unit, and a transmitting unit for transmitting the generated CQI information to the radio base station.

Radio communication apparatus or mobile station

A wireless communication device performs error correction decoding after combining newly received data from a new transmission of data and retransmitted received data from a retransmission of the data. The wireless communication device comprises a storage unit operable to store newly received data, a reception quality evaluation unit operable to evaluate reception quality for the retransmitted received data or reception quality for combined data obtained by combining the retransmitted received data with the newly received data stored in the storage unit, and a control unit operable to perform control as to whether to decode the retransmitted received data or the combined data according to the results of the evaluation.

Growing community of inventors

Fukuoka, Japan

Yuka Araikawa