Patent application number | Description | Published |
20120195399 | APPARATUS, METHOD AND RECEIVING TERMINAL FOR LDPC DECODING - An apparatus and a method for Low-density parity-check (LDPC) decoding are provided. The apparatus for LDPC decoding comprises a post effective noise variance estimation unit for estimating a post effective noise variance based on a preamble in a received signal, an LLR calculation unit for calculating an LLR based on the estimated post effective noise variance, and a decoding unit for performing LDPC decoding based on the calculated LLR. The post effective noise variance estimation unit comprises a channel frequency response estimation unit for estimating a channel frequency response based on the preamble in the received signal, a noise variance estimation unit for estimating a noise variance based on the preamble in the received signal, and a post effective noise variance calculation unit for calculating the post effective noise variance based on the channel frequency response and the noise variance. | 08-02-2012 |
20130272438 | METHOD, TRANSMITTER AND RECEIVER FOR BEAMFORMING - Embodiments of the invention provide a method for beamforming based on Grassmannian predictive coding (GPC) in a MIMO system. The method may comprise steps of: estimating present channel direction information (CDI) according to a received signal; predicting future CDI based on the present CDI and at least one of previous CDIs; predicting future codebook based on present codebook and at least one of previous codebooks; selecting a codeword from the future codebook based on the future CSI; and feeding back an index of the selected codeword to the transmitter. | 10-17-2013 |
20130343481 | METHOD AND APPARATUS FOR PREDICTING PRECODING MATRIX IN MIMO SYSTEM - A method for predicting precoding matrix (PM) in a MIMO System includes the steps of: obtaining a present PM based on a present transmission; fitting the present PM and previous PMs with a predefined model; and determining a forthcoming PM which is expected to be used in the next transmission based on the fitting. | 12-26-2013 |
20140328218 | METHOD AND APPARATUS FOR ALLOCATING FEEDBACK TRANSMISSION RESOURCE AND METHOD AND APPARATUS FOR PROVIDING INFORMATION ON VALUES THEREOF - The present invention provides a method and apparatus for allocating feedback transmission resource and a method and apparatus for providing information on values thereof. According to the method of allocating feedback transmission resource, the feedback transmission resource is divided into a plurality of resource units, and the method can comprise receiving information on values of the plurality of resource units for the mobile stations; determining values of possible resource allocation status in each bidding round for the mobile stations from the received information on the values based on the sequential second price auction; and deriving an auction process of the resource units from the determined values of possible resource allocation status in each bidding round based on the sequential second price auction, so as to obtain a final resource unit allocation result for the mobile stations. With embodiments of the present invention, it is possible to improve performance in sum channel capacity and at the same time it can achieve preservation in fairness among MSs. In preferred embodiments of the present invention, the feedback transmission resource can be optimized between at least two kinds of feedback information such as channel station information and intercell interference information, which will further improve the system performance. | 11-06-2014 |
20140369281 | METHOD AND APPARATUS FOR REPORTING AND CANCELLING CROSS-SUBFRAME CO-CHANNEL INTERFERENCE - Embodiments of the disclosure provide methods and apparatuses for cancelling cross-subframe co-channel interference (CCI), the method comprising receiving a channel quality indicator (CQI) of a cross-subframe from a user equipment (UE), the cross-subframe is a downlink subframe that is interfered by an uplink subframe in a neighboring cell; determining if the UE should be scheduled during cross-subframes by comparing the CQI with an adaptive threshold; and scheduling the UE during the cross-subframes if the UE is determined to be scheduled. By means of determining the resources scheduling based on an adaptive threshold, CCI may be cancelled and the overall resource usage will be increased according to the present invention. Furthermore, the adaptive threshold scheme can be easily implemented in practice. | 12-18-2014 |
20140376369 | METHOD AND APPARATUS FOR DYNAMICALLY ADJUSTING UPLINK-DOWNLINK CONFIGURATION - Embodiments of the disclosure provide a method and apparatus for dynamically adjusting UL-DL configuration. In the method according to embodiments of the present invention, downlink traffic load and uplink traffic load for transmission between a BS and a UE in a TDD system may be obtained, a UL-DL traffic load relation may be determined based on the downlink traffic load and the uplink traffic load and a UL-DL configuration may be selected based on the UL-DL traffic load relation. | 12-25-2014 |
20150009895 | METHOD AND APPARATUS FOR REPORTING AND CANCELLING CROSS-SUBFRAME CO-CHANNEL INTERFERENCE - Embodiments of the disclosure provide methods and apparatuses for cancelling cross-subframe co-channel interference (CCI). The method comprising receiving a channel quality indicators (CQI) of a cross-subframe from user equipment (UE), wherein the cross-subframe is a downlink subframe that is interfered by an uplink subframe in a neighboring cell; determining if the UE should be scheduled during cross-subframes based on at least the CQI; scheduling the UE during the cross-subframes if the UE is determined to be scheduled. By means of measuring and reporting CQIs on cross-subframe at UEs, base stations may determine more accurately if interferences at the cross-subframes are severe enough and if resources should be scheduled at the cross-subframe. | 01-08-2015 |
20150319765 | METHODS AND APPARATUSES OF ALLOCATING RESOURCES FOR DEVICE-TO-DEVICE COMMUNICATION - The present disclosure provides a method and an apparatus for allocating resources for device-to-device communication. The method may comprise selecting, from device-to-device pairs that need to be allocated resources and are sorted based on channel condition in descending order, a device-to-device pair ranking first in the device-to-device pairs; determining system sum rates for channels if the device-to-device pair shares resources with respective potential cellular users; and allocating resources assigned to a cellular user to the device-to-device pair based on the determined system sum rates. With embodiments of the present disclosure, the performance of the D2D communication may be further improved and it may achieve a system performance optimization. | 11-05-2015 |