Abstract
The invention claims the wireless communication device caused by using the PHICH and retransmission control method of system throughput. PHICH reception unit (206) determines that the signal of the received PHICH region is ACK or NACK. At this time PHICH reception unit (206) in the terminal (200) monitors the E-PDCCH subframe not receiving a PHICH. a control signal receiving unit (207) in the PHICH reception unit (206) output signal is NACK and the UL grant is detected under the condition of indicating the retransmission signal to the signal distributing unit (210) under the condition of detecting out of UL grant the UL grant of the detected output to the signal distribution unit (210). a signal distribution unit (210) according to the UL grant and retransmission indication signal mapping sending signal and transmitted from the wireless sending unit (211).
Provided are a wireless communication device and a retransmission control method wherein a decline in system throughput caused by the operation of PHICH is avoided. A PHICH reception unit (206) determines whether a received signal in a PHICH region is an ACK signal or a NACK signal. When doing so the PHICH reception unit (206) does not receive a PHICH in a subframe in which a terminal (200) monitors an E-PDCCH. A control signal reception unit (207) outputs a retransmission prompting signal to a signal allocation unit (210) when the signal outputted from the PHICH reception unit (206) is a NACK signal and when a UL grant was not detected. Meanwhile when a UL grant was detected the control signal reception unit (207) outputs the detected UL grant to the signal allocation unit (210). The signal allocation unit (210) maps the transmission signal in accordance with the retransmission prompting signal and the UL grant and transmits the transmission signal from a wireless transmission unit (211).
Provided are a wireless communication device and a retransmission control method wherein a decline in system throughput caused by the operation of PHICH is avoided. A PHICH reception unit (206) determines whether a received signal in a PHICH region is an ACK signal or a NACK signal. When doing so the PHICH reception unit (206) does not receive a PHICH in a subframe in which a terminal (200) monitors an E-PDCCH. A control signal reception unit (207) outputs a retransmission prompting signal to a signal allocation unit (210) when the signal outputted from the PHICH reception unit (206) is a NACK signal and when a UL grant was not detected. Meanwhile when a UL grant was detected the control signal reception unit (207) outputs the detected UL grant to the signal allocation unit (210). The signal allocation unit (210) maps the transmission signal in accordance with the retransmission prompting signal and the UL grant and transmits the transmission signal from a wireless transmission unit (211).
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