Patent application number | Description | Published |
20140092874 | METHOD AND APPARATUS FOR RESOURCE MAPPING AND CODE DIVISION MULTIPLEXING - The present disclosure discloses a method and an apparatus for resource mapping and code division multiplexing. In the present disclosure, each cell selects a mapping scheme among at least two mapping schemes to implement resource mapping, which effectively reduces interference imposed on reference signal symbols of users at the edge of a cell; vector switching is performed for an orthogonal matrix to obtain multiple different codeword sequences and implement codeword design, so that a problem that the output power of reference signal symbols is unbalanced can be effectively alleviated. | 04-03-2014 |
20140169494 | METHOD FOR GENERATING CODEBOOK, METHOD AND APPARATUS FOR DATA TRANSMISSION - A method for generating a codebook and a method and an apparatus for data transmission are provided. The method includes: receiving a label of a codeword sent by a User Equipment (UE); selecting the codeword identified by the label from the codebook for eight-antenna; and coding data to be sent by using the codeword. The codebook for eight-antenna includes at least one rank-8 codeword for eight-antenna. The rank-8 codeword for eight-antenna is generated by multiplying an inverse matrix of a rotation matrix for eight-antenna with an eight-dimensional matrix formed by rank-4 codewords for four-antenna; or generated by extending rank-4 codewords for eight-antenna, where the rank-4 codeword for eight-antenna is generated according to codewords for four-antenna. Therefore, the codeword in the codebook for eight-antenna is applicable to scenarios including dual-polarization strong correlation, dual-polarization weak correlation, single-polarization strong correlation, and single-polarization weak correlation, etc. | 06-19-2014 |
20140192770 | Methods and Nodes in a Wireless Communication System - Methods and nodes, for communication of a receiver-specific control channel signal within a wireless communication system, to be received by a receiver, wherein receiver-specific downlink control channel signals are scheduled for transmission over sets of Physical Resource Block pairs. | 07-10-2014 |
20140206342 | INFORMATION TRANSMISSION METHOD, USER EQUIPMENT AND BASE STATION - The present invention discloses an information transmission method, a user equipment and a base station. The method includes: receiving indication signaling that is sent by a base station and includes a sequence group offset value, where the sequence group offset value is used to adjust a sequence group number of a sequence group used by a user equipment for sending a sequence modulated signal; and determining the sequence group number according to the sequence group offset value. The method further includes: determining a sequence group offset value, where the sequence group offset value is used to adjust a sequence group number of a sequence group used by a user equipment for sending a sequence modulated signal; and sending indication signaling to the user equipment, where the indication signaling includes the sequence group offset value. | 07-24-2014 |
20140219380 | METHOD AND APPARATUS FOR TRANSMITTING PRECODING MARTRIX INDEX AND PERFORMING PRECODING - 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. | 08-07-2014 |
20140321421 | GENERATING AND TRANSMITTING DEMODULATION REFERENCE SIGNALS - The present disclosure provides a solution which solves the problem of demodulation reference signal (DMRS) ambiguity by introducing separate, i.e. different DMRSs. This is especially the case for systems employing dynamic allocation of control and data signals to different PRBs. | 10-30-2014 |
20150085955 | METHOD AND APPARATUS FOR TRANSMITTING PRECODING MARTRIX INDEX AND PREFORMING PRECODING - 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. | 03-26-2015 |
20150162963 | METHOD FOR GENERATING CODEBOOK, METHOD AND APPARATUS FOR DATA TRANSMISSION - A method for generating a codebook and a method and an apparatus for data transmission are provided. The method includes: receiving a label of a codeword sent by a User Equipment (UE); selecting the codeword identified by the label from the codebook for eight-antenna; and coding data to be sent by using the codeword. The codebook for eight-antenna includes at least one rank-8 codeword for eight-antenna. The rank-8 codeword for eight-antenna is generated by multiplying an inverse matrix of a rotation matrix for eight-antenna with an eight-dimensional matrix formed by rank-4 codewords for four-antenna; or generated by extending rank-4 codewords for eight-antenna, where the rank-4 codeword for eight-antenna is generated according to codewords for four-antenna. Therefore, the codeword in the codebook for eight-antenna is applicable to scenarios including dual-polarization strong correlation, dual-polarization weak correlation, single-polarization strong correlation, and single-polarization weak correlation, etc. | 06-11-2015 |