Patent ID: 9614647
Date: 2017-04-04
CPC Classifications: H04B,H04J,H04L,H04W

Claim:
1. A User Equipment (UE) to transmit an uplink channel, the UE supporting a cross-carrier scheduling between a Frequency Division Duplex (FDD) cell and a Time Division Duplex (TDD) cell, the UE comprising: a transmitter; a receiver to receive cross-carrier scheduling information; and a processor configured to determine, for the cross-carrier scheduling between the FDD cell and the TDD cell, an uplink (UL) reference configuration indicating an interval k1 between a UL grant transmission and a Physical Uplink Shared Channel (PUSCH) transmission and an interval k2 between the PUSCH transmission and a Physical Hybrid Automatic Repeat reQuest Indicator Channel (PHICH) transmission, wherein a TDD uplink/downlink configuration of the TDD cell is the UL reference configuration when the FDD cell is a scheduling cell and the TDDcell is a scheduled cell, wherein the receiver receives a UL grant through the FDD cell, the UL grant being transmitted in a first subframe of the FDD cell, wherein the transmitter transmits a PUSCH associated with the UL grant through the TDD cell, the PUSCH being transmitted in a second subframe of the TDD cell, wherein the receiver receives a PHICH associated with the PUSCH through the FDD cell, the PHICH being transmitted in a third subframe of the FDD cell, wherein the cross-carrier scheduling comprises at least one of a downlink cross-carrier scheduling and an uplink cross-carrier scheduling, wherein Physical Downlink Control Channel (PDCCH) and Physical Downlink Shared Channel (PDSCH) are transmitted through different downlink carriers in the downlink cross-carrier scheduling, and wherein a downlink carrier in which PDCCH having a first UL grant is transmitted is different from a downlink carrier linked with an uplink carrier in which PUSCH associated with the first UL grant is transmitted.