| Patent application number | Description | Published |
|---|
| 20090052354 | TIME-SPACE BLOCK PRECODING METHOD IN MULTI-USER DOWN LINK - There is provided a down link multi-user time-space code precoding method including: a step (S | 02-26-2009 |
| 20100150265 | ANTENNA SELECTION METHOD AND RADIO COMMUNICATION DEVICE - There is provided an antenna selection method and others capable of reducing a transmission error ratio and a calculation amount. In this method, a reception side feeds back M-column channel estimation matrix H_e to a transmission side (ST | 06-17-2010 |
| 20100290383 | RETRANSMISSION METHOD, BASE STATION, AND USER DEVICE IN MULTICAST SYSTEM - Disclosed are a retransmission method, a base station, and a user device in a multicast system. In order to reduce uplink signaling resource, a new MNI (Multiple NACK Indicator) message is added to an uplink common feedback channel in an existing E-MBMS system. The MNI message enables decision of an XOR retransmission group which satisfies the XOR retransmission condition. As compared to a conventional XOR retransmission, the number of uplink signalings does not depend on the number of receivers. That is, when a plenty of receptions are present, it is possible to significantly reduce uplink signalings. | 11-18-2010 |
| 20110255613 | System and Method for Feeding Back Channel Information - A system and method for feeding back channel information are provided. A method for communications device operations includes generating feedback information, encoding the feedback information to produce a feedback payload, and transmitting the feedback payload to a communications server serving a communications device. The feedback information includes at least a first long term wideband channel statistics and a second long term wideband channel statistics. | 10-20-2011 |
| 20120039297 | METHOD AND APPARATUS FOR HANDLING DATA SENDING AND RECEIVING - A method and an apparatus for handling data sending and receiving are disclosed by the present invention, where the method for handling data sending includes: allocating the number of space transmission layers and pilot frequency resource for transmission at each transmission layer ( | 02-16-2012 |
| 20120044902 | METHOD AND APPARATUS FOR PROCESSING DATA SENDING, AND METHOD AND APPARATUS FOR PROCESSING DATA RECEIVING - The present invention discloses a method and an apparatus for processing data sending and a method and an apparatus for processing data receiving, wherein, the method for processing data sending includes: allocating the number of spatial transmission layers and a pilot resource for transmission at each spatial transmission layer; generating pilot resource information according to the number of spatial transmission layers and the pilot resource for transmission at each spatial transmission layer; and sending the pilot resource information to user equipment (UE). According to the embodiments of the present invention, the UE is enabled to determine a specific pilot resource to be used so as to effectively distinguish between user channels, obtain a correct channel estimation value, improve channel estimation performance, and thus, obtain correct service data. | 02-23-2012 |
| 20120087429 | Method, Codebook and Base Station for Precoding - A method, a codebook, and a Base Station (BS) for precoding are provided. The precoding method includes: obtaining a total uplink power of a User Equipment (UE); if the total uplink power is greater than ¾ of a rated total transmit power of antennas, selecting a codeword from a first codebook with imbalanced power between layers; otherwise, selecting a codeword from the first codebook and a second codebook with balanced power between layers, so as for precoding data to be transmitted according to the selected codeword. | 04-12-2012 |
| 20120121031 | Method and Apparatus for Demodulation of a Reference Signal - A method for wireless network communication is provided. The method comprises determining, by a transmitter including a quantity of antennas, a quantity of transmitted layers; mapping a quantity of data symbols to the antennas using a quantity of precoders; generating a quantity of demodulation reference signal (DMRS) antenna ports based on the quantities of the antennas, the transmitted layers, and the precoders; and determining whether to precode at least one of the DMRS antenna ports with the precoders. The method further maps the precoded data symbols and the DMRS antenna ports to a quantity of resource elements. The method then modulates a signal comprising the resource elements and transmits the modulated signal to a receiver. Subsequently, the method estimates a channel received by the receiver over the DMRS antenna ports. | 05-17-2012 |
