Patent application number | Description | Published |
20120300868 | Method and System for MIMO Channel Information Feedback - The present invention discloses a method for Multiple Input Multiple Output (MIMO) channel information feedback, and the method includes: a terminal selecting part of column vectors for MIMO system feedback from a codebook matrix W corresponding to a Precoding Matrix Indicator (PMI) and marking the selected part of column vectors as W | 11-29-2012 |
20130136065 | OBTAINING METHOD AND DEVICE FOR CHANNEL INFORMATION - A method and device for acquiring channel information are disclosed in the present invention, to solve a technical problem in the related art that the channel information cannot be fed back flexibly according to requirements. The method includes: for one subband, User Equipment (UE) acquires Rank Indicator (RI) information of a current channel, in which the RI information indicates a rank (ν) of the current channel, and ν is a positive integral number not greater than 8; the user equipment determines the quantity of the Precoding Matrix Indicator (PMI) information required to be fed back to a base station according to ν, and transmits the PMI information in said quantity and the RI information to the base station; the base station acquires the channel information of said subband according to the PMI information in said quantity and said RI information. | 05-30-2013 |
20130136203 | Method, Device and System for Configuring Codebook - The present invention discloses a method, device and system for configuring codebooks. The method comprises a transmitting end selecting a code word restricted sub-set and informing a receiving end of the code word restricted sub-set, the code word restricted sub-set containing part or all of code words in a first codebook and/or a second codebook; and the receiving end selecting an optimal pre-coded code word from the code word restricted sub-set and informing the transmitting end of an index of the optimal pre-coded code word. By the present invention, code word restriction is implemented in the case of dual codebooks in the LTE-A system such that the calculation complexity is reduced when the receiving end selects the code word, occurrences of the case where the receiving end selects the code word wrongly are decreased, and the signaling structure in the LTE system can be inherited very well. | 05-30-2013 |
20130148533 | METHOD FOR PROCESSING CHANNEL STATE INFORMATION, AND USER EQUIPMENT - The disclosure provides a method for processing Channel State Information (CSI), and a User Equipment (UE). The method comprises: a UE measuring a channel on a CSI reference signal (CSI-RS) resource when a neighbouring cell performs coordinated muting on the resource corresponding to the CSI-RS (S | 06-13-2013 |
20130243108 | Method for sending channel information, and a terminal, a base station and an LTE-A system - The present invention discloses a method for sending channel information, and a terminal, a base station and an LTE-A system. The method comprises: a mobile terminal acquiring channel information; determining, in a codebook space, an RI and a PMI corresponding to the channel information according to the channel information; and sending the RI and the PMI to a base station. By way of the present invention, the effects of improving the throughput of an LTE-A system and the frequency spectrum efficiency thereof are achieved. | 09-19-2013 |
20140153533 | Method and Base Station for Informing Power Message - A method for informing about power information and a base station are disclosed in the present document. The method includes: a base station informing a user equipment of at least one of the following types of power ratio information through signalings: ratio information of transmission power for transmitting a second category of control signaling information to transmission power for transmitting dedicated demodulation pilots; and ratio information of transmission power for transmitting data information to transmission power for transmitting dedicated demodulation pilots in a subframe where data transmission occupies only one slot. In the example of the present document, when the second category of control signalings and the data are sent, different transmission layers and transmission powers can be selected, which solves the problem resulted from an inconsistency of Demodulation Reference Signal (DMRS) powers and avoids a demodulation error. | 06-05-2014 |
20140315563 | METHOD AND DEVICE FOR SENDING AGGREGATED CQI - A method and device for sending an aggregated CQI are provided by the disclosure. The method includes a terminal side receiving CSI-RS configuration information and/or interference measurement information sent from a base station side, the terminal side determining a sending sequence of aggregated CQI of each aggregated CSI-RS configuration resource and/or interference measurement resource according to a receiving sequence of the CSI-RS configuration information and/or interference measurement information, wherein each aggregated CSI-RS configuration resource and/or interference measurement resource is aggregated of at least one configuration CSI-RS configuration resource and/or interference measurement resource corresponding to the CSI-RS configuration information and/or interference measurement information, the terminal side sending the aggregated CQI to the base station according to the sending sequence. The disclosure resolves the problem in related art that the base station side cannot acquire the channel state of the terminal side accurately due to the fact that the base station side cannot acquire the CSI-RS configuration resource and/or interference measurement resource fed back by the terminal side corresponding to the aggregated CQI, thereby the interference between cells is reduced, and the throughput of system is improved. | 10-23-2014 |
20140355468 | Methods and devices for notifying interference measurement signaling, interference measurement and feedback - The present disclosure provides a method for notifying an interference measurement signalling, including that: notifying, by a network side, information of M subframes included in an interference measurement subframe set or a channel quality measurement subframe set to a terminal. The present disclosure also provides a method for measuring interference, including that: receiving, by a terminal, a notification of information of an interference measurement subframe set or a quality measurement subframe set sent by a network side, performing interference measurement on each subframe of the interference measurement subframe set or the channel quality measurement subframe set, and calculating an average interference value; and determining, by the terminal, Channel Quality Indication (CQI) information according to the average interference value, and feeding the CQI information back to a base station. The present disclosure further provides a method for feeding back channel quality information, including that: performing, by a terminal, interference measurement on one or more subframes specified by a base station, determining a CQI according to the measurement result, and feeding back the CQI to the base station. The present disclosure also provides devices for implementing above methods. In the present disclosure, the base station can accurately determine a modulation and coding scheme of the terminal according to the interference measurement result, thus improving data transmission efficiency. | 12-04-2014 |
20150016368 | Data Transmission Control Method and System for User Equipment - The present document provides a method and system for controlling data transmission of a User Equipment (UE). The method includes: a base station transmitting control information for instructing a first UE to transmit data to a second UE. The present document solves the interference problem in device to device communication and communication in the original network, realizes the direct UE to UE communication and improves spectrum efficiency. | 01-15-2015 |
20150079981 | Method and Device for Receiving System Information - The embodiments of the present document provide a method and apparatus for receiving system information. The method includes: a UE receiving system information and/or system information updating indication of a serving cell and/or a neighboring cell according to system configuration, including: receiving the system information and/or the system information updating indication of the serving cell and/or the neighboring cell from other locations except a fixed location configured by the system. By using the method and the apparatus provided by the embodiments of the present document, the user terminal can receive the system information from other locations except the fixed location configured by the system, thereby solving the problem in the related art that the user terminal cannot obtain the system information due to interference in the system information at the fixed location. | 03-19-2015 |