Abstract:
Disclosed are a method and device for simultaneous transmission of ACK/NACK feedback information and periodic CQI/PMI/RI feedback bits. By way of using the technical solution of the embodiments of the present invention, the periodic CQI/PMI/RI feedback bits and ACK/NACK feedback information can be simultaneously transmitted in the same uplink sub-frame using PUCCH format 3 in an LTE-A system, thus avoiding the situation that the transmission of the periodic CQI/PMI/RI information needs to be abandoned when the ACK/NACK feedback information and the periodic CQI/PMI/RI information are transmitted simultaneously in the same uplink sub-frame, improving the feedback efficiency of the uplink control information.
Abstract:
Disclosed are a method and an apparatus for transmitting ACK/NACK feedback information. By applying the technical solution of the present invention, when ACK/NACK feedback information is transmitted based on an ACK/NACK mapping table with a PUCCH format 1b with channel selection scheme, the problem of inconsistent detection results due to inconformity of the transmission scheme by a base station and a user equipment (UE) in the process of feeding back the ACK/NACK feedback information can be avoided, so as to implement a rollback of LTE Rel-8 PUCCH format 1a/1b.
Abstract:
The present invention discloses a method and apparatus for receiving signals, which comprises the followings: receive signals on at least one receiving branch, which comprises at least two reception units, including one data reception unit and one pilot reception unit at least. Said signal refers to a codeword in a transmission codebook; calculate metric value of each codeword in said transmission codebook according to said received signal; obtain the codeword with maximal metric value among all said codewords and the metric value corresponding to this codeword; if this value exceeds threshold value, Determining the codeword corresponding to said maximal metric value; if this value is less than the threshold value, Determining discontinuously-sent DTX. In the present invention, perform joint demodulation of data symbol and pilot symbol to make the demodulation results more reliable; meanwhile; judge whether it is discontinuous transmission based on joint demodulation of data symbol and pilot symbol.
Abstract:
The present invention discloses a method for beam forming transmission, comprising the following steps: the eNB mapping the downlink data of the user and the UE-specific reference signals carried in the DwPTS Field for beam forming transmission according to the preset mapping structure, and performing the beam forming process; the eNB performing the resource mapping on results of the beam forming process result, primary synchronization signal, control signaling, Cell specific reference signal and other user data to form the DwPTS Field data; and the eNB sending the DwPTS Field data to the UE. The present invention further discloses a system and a corresponding device for beam forming transmission. The present invention can realize beam forming transmission in the Special Field DwPTS and improve the performance of the system without introducing a new user UE-specific reference signal mapping structure, which is simple to be realized.