Method for transmitting HARQ-ACK information based on transmission diversity

摘要

A method for transmitting HARQ-ACK information based on transmission diversity is provided. The method includes configuring two component carriers, referred to as Cells, for a User Equipment (UE); when a base station configures the UE to transmitHARQ-ACK information adopting the transmission diversity technique, the base station indicates dynamically whether an other Cell is scheduled in the same subframe via a PDCCH scheduling a PDSCH of one Cell, so as to enable the UE to know the number of Cells scheduled in the same downlink subframe by the base station, and to generate HARQ-ACK information based on the number of Cells. Unnecessary spatial bundling of the HARQ-ACK information may be avoided, unnecessary downlink data retransmission is reduced and throughput of downlink data is improved.

主权项

1. A method for transmitting, by a user equipment (UE), hybrid automatic retransmission request-acknowledgement (HARQ-ACK) information, the method comprising:
generating HARQ-ACK information for at least one transport block of a primary cell and at least one transport block of a secondary cell; and transmitting the HARQ-ACK information to the base station based on a physical uplink control channel (PUCCH) format 1b with channel selection, wherein a number of resources for the PUCCH format 1b with channel selection are determined based on a transmission mode of the primary cell and a transmission mode of the secondary cell, and wherein the HARQ-ACK information is transmitted on a first antenna port and a second antenna port, and a resource for the first antenna port and a resource for the second antenna port are defined respectively.