METHOD AND APPARATUS FOR DETERMINING HARQ TIMING IN COMMUNICATION SYSTEMS

摘要

Methods and apparatuses for determining HARQ timing in a communication system supporting Carrier Aggregation (CA) are provided. A method for receiving, at a BS, a HARQ feedback from a UE in a communication system supporting CA of a Pcell and at least one Scell is provided. The Pcell and Scell support either FDD or TDD. The method comprises: transmitting a downlink physical channel through one of the Pcell and Scell; receiving the HARQ feedback corresponding to the downlink physical channel of the Pcell at a first timing predetermined for the Pcell; and receiving the HARQ feedback corresponding to the downlink physical channel of the Scell at a second timing. The second timing is determined according to one or more of duplex modes of the Pcell and the Scell, a scheduling mode of the Scell, and predefined rules.

主权项

1. A method for receiving, at a base station, a Hybrid Automatic Repeat Request (HARQ) feedback from a user equipment in a communication system supporting Carrier Aggregation (CA) of a primary cell and at least one secondary cell, wherein said primary cell and secondary cell support either Frequency Divisional Duplex (FDD) or Time Divisional Duplex (TDD), said method comprising:
transmitting a downlink physical channel through one of the primary and secondary cells; receiving the HARQ feedback corresponding to the downlink physical channel of the primary cell at a first timing predetermined for the primary cell; and receiving the HARQ feedback corresponding to the downlink physical channel of the secondary cell at a second timing, wherein said second timing is determined according to one or more of duplex modes of the primary cell and the secondary cell, a scheduling mode of the secondary cell, and predefined rules.