Patent application number | Description | Published |
20080207238 | Transmission Over a Multiple Input Multiple Output Broadcast Channel (Mimo-Bc) - A Multiple Input Multiple Output (MIMO) communication system | 08-28-2008 |
20080253324 | Multiple Channel Communication - A communication device ( | 10-16-2008 |
20090312018 | METHODS OF TRANSMITTING AND RECEIVING DATA, AND APPARATUS THEREFOR - Data is transmitted from a radio communication device ( | 12-17-2009 |
20100118782 | METHOD FOR COMMUNICATING IN A MIMO CONTEXT - The present invention relates to a method for communicating from a primary station with an array of transmit antennas to a secondary station on a downlink channel, said method comprising steps of, at the primary station, (a) configuring the downlink channel, step (a) being subdivided into steps of: (a2) computing a precoding to be applied during a corresponding transmission from the primary station to the secondary station for each of an array of transmit antennas; (a3) applying a reversible transform N to the precoding, thus ascertaining a set of precoding coefficients substantially representative of the precoding in a transform domain; (a4) computing a set of parameters comprising at least one parameter, said parameter being substantially representative of the coefficients obtained at step (a3); (a5) signaling the set of parameters to the secondary station; (b) transmitting data to the secondary station substantially according to the precoding computed at step (a2). | 05-13-2010 |
20100118783 | METHOD FOR PROVIDING PRECODING INFORMATION IN A MULTI-USER MIMO SYSTEM - The present invention relates to a method for communicating in a network having a primary station and a plurality of secondary stations, said method comprising a step of, at the primary station, (a) configuring at least one downlink channel from the base station to a first secondary station, step (a) comprising (a1) signalling a first set of at least one parameter indicative of precoding applied to a first transmission from the base station to the first secondary station; (a2) signalling a second set of at least one parameter indicative of precoding applied to a second transmission from the base station to at least one second secondary station, wherein said step (a2) is carried out so that the second set of parameters contains less information than the first set of parameters. | 05-13-2010 |
20100311429 | COORDINATED CHANGE OF TRANSMISSION PARAMETERS FOR DATA AND CONTROL INFORMATION - The present invention relates to a method for transmission of control information from a primary station to at least one secondary station, comprising the step of transmitting with a first set of control information parameters control information corresponding to data transmission with a first set of data parameters and transmitting with a second set of control information parameters control information corresponding to data transmission with a second set of data parameters, wherein at least one control information parameter has a difference in value between the two sets of control information parameters, said difference in value having a dependency on the difference between the value of a data parameter in the first set of data parameters and the value of the data parameter in the second set of data parameters, said data parameter being a different parameter from the at least one control information parameter. | 12-09-2010 |
20130258893 | RADIO COMMUNICATION STATION AND RADIO COMMUNICATION DEVICE, AND METHODS OF OPERATING SAME - A radio communication station in a radio communication system having a plurality of radio communication devices, derives a quantisation parameter and transmits the quantisation parameter to the radio communication devices for use in subsequent quantisation of a channel state metric. The radio communication devices receive the quantisation parameter, determine a channel state metric, quantise the determined channel state metric by applying quantisation ranges indicated by the quantisation parameter, determine a data value indicative of the quantised channel state metric, and transmit a signal conveying the determined data value as a random access transmission. | 10-03-2013 |
20150195023 | METHOD FOR COMMUNICATING IN A MIMO CONTEXT - A primary station includes an array of transmit antennas to communicate with at least one secondary station on a downlink channel; at least one processor coupled to a memory, the at least one processor being configured to: generate a pre-coding to be applied during a corresponding transmission to the at least one secondary station for each transmit antenna in the array; apply a reversible transform to the pre-coding, the pre-coding being independent of data to be transmitted to the secondary station during said corresponding transmission to the secondary station so as to generate a set of pre-coding coefficients representative of the pre-coding in a transform domain; generate a set of parameters comprising at least one parameter indicative of the set of pre-coding coefficients; signal the set of parameters to the secondary station; and transmit data to the secondary station in accordance with the pre-coding. | 07-09-2015 |