Abstract:
A method and a base station of transmitting a data block are provided. At least one data block is transmitted via at least one of at least two downlink frequency bands. A modulation symbol and N spreading sequences are received. Acknowledgement/negative acknowledgement (A/N) information is determined in accordance with the modulation symbol and the N spreading sequences. The modulation symbol and the N spreading sequences jointly determine the A/N information. And the at least one data block may be retransmitted depending on the A/N information determined.
Abstract:
A method and an apparatus for sending a Precoding Matrix Index (PMI) and performing precoding are provided in the embodiments of the present invention. The method for sending the PMI comprises the following steps: a user equipment acquires the transmission channel capability of carrying the PMI; according to the transmission channel capability of carrying the PMI, the precoding matrices are selected from a locally-stored first codebook set to form a second codebook set; a first precoding matrix is selected from the second codebook set; an index corresponding to the first precoding matrix is sent to a base station over the transmission channel so as to make the base station can find out the first precoding matrix according to the index and precode the data according to the first precoding matrix. The embodiments of the present invention can realize the flexible configuration and use of the PMI.
Abstract:
A method in a Central Node (CN), a method in a Remote Node (RN), and a method in a wireless communication system for allocating reference signals to be used for uplink transmission are disclosed. According to one aspect reference signals are allocated with a method comprising the steps of: determining in a CN a number of reference signals N to be used for uplink transmission by a Remote Node RN; indicating to the RN the number of reference signals N to be used for uplink transmission by the RN; configuring an uplink transmission by the RN with at most the number of reference signals N; and performing by the RN the uplink transmission with at most the number of reference signals Non transmit antennas comprised in the RN. The present disclosure further discloses a CN and a RN relating to the methods.
Abstract:
A receive node device includes a processor coupled to a memory. The processor is configured to report a first sub-index and to report at least one additional second sub-index for each one of one or more matrices. Each one of the one or more matrices is indexed by the first sub-index and the second sub-index. The first sub-index and the second sub-index have different time-frequency reporting granularity.