GENERATION OF HARQ-ACK INFORMATION AND POWER CONTROL OF HARQ-ACK SIGNALS IN TDD SYSTEMS WITH DOWNLINK OF CARRIER AGGREGATION

摘要

Methods and apparatus are provided for a User Equipment (UE) configured to have multiple cells in a DownLink (DL) of a Time Division Duplex (TDD) communication system so as to determine a power of an acknowledgement signal that the UE transmits in a control channel and to determine a number of acknowledgement information bits that the UE multiplexes with data information bits in a data channel. A transmission power of the control signal is determined based on DL Assignment Index (DAI) Information Elements (IEs) in DL Scheduling Assignments (SAs) that the UE detects through multiple transmission time intervals and through the multiple configured DL cells. The number of acknowledgement information bits in the data channel is determined based on a DAI IE of an UpLink (UL) SA associated with the transmission of the data channel.

主权项

1. A method for a user equipment (UE) operating in a time division duplex (TDD) communication system to transmit acknowledgement information bits, the UE being configured by a base station to have multiple downlink (DL) cells, the method comprising:
determining size of acknowledgement information bits based on an uplink (UL) downlink assignment index (DAI) value of a received UL scheduling assignment (SA) for a physical uplink shared channel (PUSCH), if the UL SA for the PUSCH is received; generating the acknowledgement information bits in response to at least one received data transport block (TB) within a bundling window in a cell c of the multiple DL cells; and transmitting the acknowledgement information bits having the determined size via at least one of the PUSCH and a physical uplink control channel (PUCCH).