Patent application number | Description | Published |
20110099637 | SECURITY DISPOSING METHOD AND DEVICE FOR INPUT DATA - A security disposing method and device for the input data involves generating an interference data according to a predefined rule when inputting the data, and mixing the input data with the interference data and sending the mixed data, and parsing out the interference data according to the predefined rule after receiving the mixed data, and separating the input data according to the parsed interference data. | 04-28-2011 |
20140050277 | METHOD AND APPARATUS FOR SELECTING MULTI-USER PAIRING IN A MULTI-USER MULTI-INPUT MULTI-OUTPUT SYSTEM - The method includes calculating by user equipment an SINR of each of precoding vectors in a precoding matrix; whether there is an SINR greater than a first threshold in the SINRs of the precoding vectors; selecting by the user equipment a precoding vector to which the SINR greater than the first predetermined threshold corresponds according to a predefined policy; and feeding back by the user equipment to a base station a PMI of the selected precoding vector and a quantified value of the corresponding SINR, or feeding back by the user equipment to a base station a PMI of the selected precoding vector, a quantified value of the corresponding SINR and a number of times of transformation to which the SINR corresponds, or feeding back by the user equipment to a base station only a number of times of transformation. | 02-20-2014 |
20140064236 | CHANNEL RECONFIGURATION METHOD, PRECODING METHOD AND APPARATUS THEREFOR - In order to recognize a relatively accurate channel state of each UE, a channel of the UE is reconfigured based on channel phase information and channel quality information reported from the UE to obtain a channel matrix of the UE. Besides, a channel of the UE is reconfigured based on channel phase information and channel quality information reported from the UE to obtain a channel matrix of the UE, a precoding matrix of the UE is determined based on the channel matrix of the UE, and precoding is performed on data to transmit to the UE, using the precoding matrix. | 03-06-2014 |
20140133419 | METHOD FOR COORDINATING INTER-CELL INTERFERENCE IN RADIO NETWORK, BASE STATION AND RADIO NETWORK - Provided are a method for coordinating inter-cell interference in a radio network, a transmission point and the radio network. The method includes: a step A of a normal base station performing scheduling based on feedback information of users of the normal base station and obtain a user scheduling result of the normal base station including a parameter about actual transmission characteristics of the normal base station; a step B of the normal base station obtaining a performance estimating parameter including a parameter about actual transmission characteristics of each of the one or plurality of low-power base stations for both cases of normal base station without transmission and normal base station with transmission; a step C of the normal base station using the performance estimating parameter and the user scheduling result of the normal base station as a basis to determine weighting throughputs of all transmission points for the case of normal base station without transmission and weighting throughputs of all the transmission points for the case of normal base station with transmission; and a step D of the normal base station comparing the weighting throughputs of all the transmission points, obtaining a transmission determination result and performing data transmission based on the transmission determination result. | 05-15-2014 |
20140169275 | METHOD FOR COORDINATING INTER-CELL INTERFERENCE IN HETEROGENEOUS NETWORK AND HETEROGENEOUS NETWORK - Provided are a method for coordinating inter-cell interference in a heterogeneous network (HetNet) and the heterogeneous network. The method includes: forming M normal base stations and low-power nodes within coverage of the respective normal base stations in the heterogeneous network into a coordinated group; combining mute/non-mute states of bandwidths of the M normal base stations to obtain a plurality of states of the coordinated group; a user of each of the normal base stations feeding at least one first CQI back to the normal base station; a user of each of the low-power nodes feeding one or more second CQIs back to the low-power node; using the first CQI and the second CQIs as a basis to make capacity estimation of the coordinated group; and setting the mute/non-mute states of the bandwidths of the M normal base stations in accordance with a state of the coordinated group corresponding to an optimal system capacity so as to perform data transmission. In the method for coordinating interference provided by the present invention, M transmission points each including one or more normal base stations and low-power nodes covered by the respective normal base stations can be formed into a coordinated group, thereby extending processing for the normal base stations up to all the transmission points in the coordinated group. | 06-19-2014 |
20150109985 | RADIO BASE STATION, USER TERMINAL, RADIO COMMUNICATION METHOD AND RADIO COMMUNICATION SYSTEM - The present invention is designed to prevent the decrease of throughput and also reduce the overhead of CSI feedback when CoMP transmission is applied. A radio base station is configured to be able to perform coordinated multiple-point transmission/reception with a user terminal, and includes a detection section configured to detect a retransmission control signal fed back from the user terminal, and a CQI updating section configured to update a CQI for coordinated multiple-point transmission/reception using received quality information in each cell, and the CQI updating section updates the CQI using a calculating formula that is defined with the received quality information in each cell and a variable which changes the value depending on the content of the retransmission control signal. | 04-23-2015 |
20150110032 | RADIO COMMUNICATION SYSTEM, RADIO BASE STATION APPARATUS, USER TERMINAL AND COMMUNICATION CONTROL METHOD - The present invention is designed to realize signaling of cell index information that is suitable for CoMP transmission/reception techniques. The radio base station apparatus of a special cell generates downlink control information, in which the indices of CoMP sets are incorporated in a physical downlink control channel that is shared between the multiple cells that carry out joint transmission, based on a table in which indices to represent individual coordinated cells that serve as transmission points in CoMP transmission and indices of CoMP sets to represent combinations of multiple cells that carry out joint transmission in CoMP transmission are mapped to bit data. | 04-23-2015 |
20150365181 | USER TERMINAL, RADIO BASE STATION AND ADAPTIVE MODULATION AND CODING METHOD - The present invention is designed to make possible adaptive modulation and coding (AMC) that supports high-order modulation schemes. The adaptive modulation and coding method of the present invention is an adaptive modulation and coding method for a downlink shared channel, and includes, in a user terminal, the steps of measuring channel quality based on a reference signal from the radio base station, acquiring a channel quality indicator to indicate the modulation scheme and the coding rate that are applicable to the downlink shared channel in the channel quality, from a table in which channel quality indicators, modulation schemes and coding rates are associated with each other, and transmitting the channel quality indicator to the radio base station, and the modulation schemes include a modulation scheme of a higher order than 64 QAM. | 12-17-2015 |