METHOD AND APPARATUS OF CONTROLLING FOR UPLINK SCHEDULING AND HARQ TIMING

摘要

The present invention relates to an apparatus and method for controlling an uplink (UL) scheduling and Hybrid Automatic Repeat reQuest (HARD) timing supported in a TDD-FDD CA environment. According to aspects of the present invention, in a TDD-FDD carrier aggregation deployment environment, an efficient UL scheduling/HARQ operation may be performed for a UE in which a cross-carrier scheduling is configured.

主权项

1. A method of a Hybrid Automatic Repeat reQuest (HARQ) process performed by a User Equipment (UE), the UE supporting a cross-carrier scheduling between a Time Division Duplex (TDD) cell and a Frequency Division Duplex (FDD) cell, the method comprising:
receiving cross-carrier scheduling information from a base station; when an FDD cell is configured as a scheduled cell, which is scheduled by a TDD cell, determining a first interval between a Physical Uplink Shared Channel (PUSCH) transmission and a Physical HARQ Indicator Channel (PHICH) transmission; transmitting, from the UE, a PUSCH through the FDD cell, the PUSCH being transmitted in a first subframe of the FDD cell; and receiving a PHICH responsive to the PUSCH through the TDD cell, the PHICH being transmitted in a second subframe of the TDD cell, the second subframe being determined based on the first subframe and the first interval.