Patent ID: 9191939
Filing Date: 2015-11-17
Classification: H04L,H04W

Abstract:
1. A method for mapping acknowledgement/negative acknowledgement (ACK/NACK) response messages, comprising: a user equipment (UE) determining a number L of bits of ACK/NACK response messages that need to be fed back according to predetermined conditions, wherein, the predetermined conditions include at least one of: a number of downlink component carriers or cells that are configured to the UE by a base station, and a transmission mode of each of the downlink component carriers; and the UE mapping the ACK/NACK response messages to the L bits according to at least one of: whether a downlink component carrier or cell is a primary or secondary one, an order of the code word streams of the downlink component carrier or cell and a number of the code word streams contained in the downlink component carrier or cell, and the L bits are processed by channel coding, scrambling, modulating, transform precoding, and time domain spreading, and then sent on a PUCCH format in form of DFT-s-OFDM; or, the L bits are processed by channel coding and channel interleaving and then multiplexed with data and sent to the base station in a PUSCH, and if the UE is unable to detect a PDSCH in a code word stream corresponding to a downlink component carrier or cell configured for the UE, the UE will generate a NACK response message for the downlink component carrier or cell.