Patent ID: 9749116
Date: 2017-08-29
CPC Classifications: H04L

Claim:
1. A method of a user equipment (UE) performing a Hybrid Automatic Repeat reQuest (HARQ) in a multi-node system comprising a plurality of nodes and a base station connected to the plurality of nodes and capable of controlling the plurality of nodes, the method comprising: receiving, from the base station, acknowledgement/not-acknowledgement (ACK/NACK) transmission region indicating information, wherein the ACK/NACK transmission region indicating information indicates whether an ACK/NACK signal is to be transmitted via a physical HARQ indicator channel (PHICH) or an enhanced PHICH (E-PHICH); transmitting, to at least one of the plurality of nodes, uplink data; and receiving, from the at least one node, the ACK/NACK signal for the uplink data via a singular downlink (DL) subframe based on the ACK/NACK transmission region indicating information, wherein the singular DL subframe includes a Physical Downlink Control Channel (PDCCH), an enhanced PDCCH (E-PDCCH) and the E-PHICH, the PHICH is located on the PDCCH, the E-PDCCH and the E-PHICH are located on a Physical Downlink Shared Channel (PDSCH), and the E-PHICH is separated from the E-PDCCH in a time domain and a frequency domain, wherein the E-PDCCH and the E-PHICH are associated with at least one region in which different control information is transmitted by each of the plurality of nodes, and wherein if the ACK/NACK transmission region indicating information indicates the PHICH, the ACK/NACK signal is transmitted via the PHICH, and if the ACK/NACK transmission region indicating information indicates the E-PHICH, the ACK/NACK signal is transmitted via the E-PHICH.