Abstract: A channel quality report accuracy measurement apparatus and accuracy measurement method are provided that correctly measure the accuracy of channel quality reported from a communication apparatus. A scheme control section (140) stores coding rates and modulation schemes corresponding to CQIs, and specifies the transmission scheme corresponding to a fixed CQI reported from a CQI statistical processing section (230). A CQI decoding section (220) decodes a reported CQI contained in a received signal. The CQI statistical processing section (230) performs statistical processing of reported CQIs corresponding to test data transmitted prior to an accuracy measurement test, and reports the most frequently reported CQI to the scheme control section (140) as a fixed CQI. A PER calculation section (260) calculates the PER in the communication apparatus from the reported CQI and Ack/Nack corresponding to test data transmitted in accordance with the fixed CQI.

Abstract: A mobile station apparatus 101-1 detects and reports a reception quality value of a known signal transmitted from a base station apparatus 102-1. Base station apparatus 102-1 has a quality deficiency signal generation section 1021 that compares the reception quality value with a predetermined threshold value and generates a quality deficiency signal when it is shown that the reception quality value is less than the predetermined threshold value, and a quality deficiency signal reporting section 1024 that reports an identifier of mobile station apparatus 101-1 corresponding to the quality deficiency signal to a base station control apparatus 103. Base station control apparatus 103 has a control signal transmitting section 1031 that transmits a control signal to switch data transmission by means of HSDPA for mobile station apparatus 101-1 to data transmission by means of DPCH.

Abstract: There is provided a packet transmission device capable of receiving an MBMS service packet which could not be received for level measurement of a different frequency in a mobile station device, by using the current scheduling information. In this packet transmission device, an empty section search unit (102) searches how much space exists between which services in the multi-cast transmission frame transmitted from the scheduling information to a physical channel. A retransmission packet selection unit (103) extracts a retransmission packet from the packets transmitted at the service immediately before the empty section. A packet transmission unit (104) can perform retransmission for filling the empty section.

Abstract: A testing apparatus capable of testing the reception performance of a communication terminal apparatus to be tested, while determining whether a selecting/combining function is implemented in the communication terminal apparatus. In the testing apparatus, a transmission control part (103) designates, to a selecting part (104), a timing at which to switch spread codes to be outputted. The selecting part (104) selects, in accordance with the designation of the transmission control part (103), either a first spread code generated by a first code generating part (101) or a second spread code generated by a second code generating part (102). A spreading part (106) multiplies a packet outputted from an outbound packet generating part (105) by a spread code outputted from the selecting part (104) for output. A measuring part (151) receives a report as to whether the packet from a communication terminal apparatus (200) has been correctly decoded, calculates a packet error rate, and outputs the calculation result.

Abstract: A mobile station apparatus is provided that allows efficient performance of processing related to CQI and reduces unnecessary power consumption and interference against other mobile stations. In this mobile station apparatus, a signaling detector (71) detects a timing the HSDPA serving cell changes, that is, a timing the base station being the destination of a channel quality indicator changes to another base station, and reports the change timing and the detection timing at which the change timing is detected to a controller (72). When the change timing comes between an SIR measurement start timing and a CQI transmission end timing, the controller (72) controls the generating of CQI in a CQI generator (60) and transmission of CQI in a transmitter (80) according to the detection timing in the signaling detector (71).

Abstract: A mobile station apparatus is provided that performs receive processing efficiently and reduces unnecessary power consumption. In this mobile station apparatus, a signaling detector (71) detects a compressed mode gap period in an uplink channel, that is, a period in which no uplink signal is transmitted to a base station, and reports this period to a controller (72). If the period detected in the signaling detector (71) contains transmission timing of an ACK/NACK signal, the controller (72) controls an HS-PDSCH receive processor (40) to stop the receive processing of the packet data corresponding to the ACK/NACK signal.

Abstract: A mobile station apparatus 101-1 detects and reports a reception quality value of a known signal transmitted from a base station apparatus 102-1. Base station apparatus 102-1 has a quality deficiency signal generation section 1021 that compares the reception quality value with a predetermined threshold value and generates a quality deficiency signal when it is shown that the reception quality value is less than the predetermined threshold value, and a quality deficiency signal reporting section 1024 that reports an identifier of mobile station apparatus 101-1 corresponding to the quality deficiency signal to a base station control apparatus 103. Base station control apparatus 103 has a control signal transmitting section 1031 that transmits a control signal to switch data transmission by means of HSDPA for mobile station apparatus 101-1 to data transmission by means of DPCH.

Abstract: A channel quality report accuracy measurement apparatus and accuracy measurement method are provided that correctly measure the accuracy of channel quality reported from a communication apparatus. A scheme control section (140) stores coding rates and modulation schemes corresponding to CQIs, and specifies the transmission scheme corresponding to a fixed CQI reported from a CQI statistical processing section (230). A CQI decoding section (220) decodes a reported CQI contained in a received signal. The CQI statistical processing section (230) performs statistical processing of reported CQIs corresponding to test data transmitted prior to an accuracy measurement test, and reports the most frequently reported CQI to the scheme control section (140) as a fixed CQI. A PER calculation section (260) calculates the PER in the communication apparatus from the reported CQI and Ack/Nack corresponding to test data transmitted in accordance with the fixed CQI.

Abstract: A wireless communication apparatus and a receiving scheme selection method are provided for improved overall system throughput. SIR measurer (106) measures the SIR of a known signal. Doppler frequency detector (108) detects the Doppler frequency from the received signal and measures the Doppler shift amount. The Doppler shift amount serves as an indicator of the moving speed of the mobile station apparatus. Interference power measurer (110) measures interference power from other cells. Known signal obtainer (104), SIR measurer (106), Doppler frequency detector (108), and interference power measurer (110) constitute a propagation environment estimator in this embodiment. Based on the SIR, Doppler shift amount, and interference power, receiving scheme selector (112) selects a receiving scheme of either RAKE reception or linear equalization.

Abstract: In a base station apparatus, uplink Doppler shift estimation section 104 estimates the amount of Doppler shift of received signals, uplink filter coefficient determination section 108 determines a filter coefficient, control signal generation section 109 generates a control signal which indicates the filter coefficient, and the generated signal is transmitted to a communication terminal apparatus. In the communication terminal apparatus, control information extraction section 112 extracts a filter coefficient, and averaging section 113 performs averaging on the instantaneous power values measured at instantaneous power measurement section 111 for a time period based on the filter coefficient, and calculates the averaged value together with a noise power value. Wireless quality reporting section 114 transmits a signal indicating wireless quality derived from the averaged power value and the noise power value to the base station apparatus.

Abstract: A Viterbi decoder 102-1 decodes a channel signal having a smallest frame length of channel signals multiplexed, and a CRC calculator 103-1 provides CRC determination to said decoding result. A weighting factor calculator 104 outputs a weighting factor having a large value to a path metric in a time zone where the CRC determination result of CRC calculator 103-1 is “OK”, and a weighting factor having a small value to the path metric in a time zone where the CRC determination result of CRC calculator 103-1 is “NG.” Viterbi decoders 102-1 to 102-n multiply branch metrics by said weighting factor when providing Viterbi decoding to the other channel signals, respectively. This makes it possible to improve an error correcting capability without increasing an amount of calculations.