Communication device and retransmission control method

Japanese Patent JP6360235

B2

Provided is a wireless communication device. A PHICH reception unit determines whether a received signal in a PHICH region is an ACK signal or a NACK signal. When doing so, the PHICH reception unit does not receive a PHICH in a subframe in which a terminal monitors an E-PDCCH. A control signal reception unit outputs a retransmission prompting signal to a signal allocation unit when the signal outputted from the PHICH reception unit is a NACK signal and when a UL grant was not detected. Meanwhile, when a UL grant was detected, the control signal reception unit outputs the detected UL grant to the signal allocation unit. The signal allocation unit 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.

Ayako Horiuchi
Akihiko Nishio

JP2017110964A

July 18, 2018

June 05, 2017

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Panasonic Intellectual Property Corporation of America

H04W28/04; H04L1/16; H04W72/04

JP2014511060A

US20100135237

Motorola,Linking of downlink CC to uplink CC,3GPP TSG-RAN WG2 Meeting #69 R2-101391,[online],2010年 2月15日,pages 1-4,[検索日 2017.05.08],URL,http://www.3gpp.org/ftp/tsg_ran/WG2_RL2/TSGR2_69/Docs/R2-101391.zip
Panasonic,Further considerations on PHICH Linkage for carrier aggregation,3GPP TSG-RAN WG1 Meeting #58bis R1-093940,[online],2009年10月 5日,pages 1-3,[検索日 2018.05.18],URL,http://www.3gpp.org/ftp/tsg_ran/WG1_RL1/TSGR1_58b/Docs/R1-093940.zip

Koichi Washida

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