Patent ID: 9622234
Date: 2017-04-11
CPC Classifications: H04L,H04W

Claim:
1. A radio communication terminal comprising: a receiver, which, in operation, receives a control signal via an enhanced physical downlink control channel (E-PDCCH), wherein the E-PDCCH is mapped to two or more frequency resource blocks and each frequency resource block includes one or more consecutive numbers of enhanced control channel elements (eCCEs); a controller, which, in operation, determines an ACK/NACK resource for use in transmitting an ACK/NACK signal based on an association rule, wherein the association rule associates two consecutive numbers of ACK/NACK resources with the eCCEs, which are not consecutive and are included in two different frequency resource blocks, respectively; and a transmitter, which, in operation, transmits the ACK/NACK signal using the determined ACK/NACK resource.