| Patent application number | Description | Published |
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| 20090274234 | USING COVARIANCE MATRICES FOR LINK SELECTION IN MIMO COMMUNICATION SYSTEM - A method of selecting at least one communication link in a wireless communication network is proposed, comprising the steps of transmitting from at least one transmitting node in the network a pilot signal from each of at least two transmitter antennas of the transmitting node, receiving the pilot signals from the at least two transmitter antennas in a receiving terminal, estimating, in the terminal, a covariance matrix of the channel, based on the pilot signals received, determining the pathloss for each antenna based on the covariance matrix, selecting one of at least two possible links for the communication between the terminal and the transmitting nodes. The terminal is enabled to measure on each transmitter antenna individually, which provides a better tool for link selection and cell selection. | 11-05-2009 |
| 20090298502 | ADVANCED HANDOVER FOR ADAPTIVE ANTENNAS - Handover is a main function that is used to support mobility in the network. In a cellular communication network having adaptive antennas for enabling narrow beam operation, it is assumed that a mobile unit is served by an active cell set (S | 12-03-2009 |
| 20100015988 | Method and Arrangement for Allocating Radio Resources in a Communication System - The present invention relates to a method and an arrangement of facilitating the allocation of radio resources in a communication network, comprising a communication network node ( | 01-21-2010 |
| 20100039990 | Method and Arrangement in a Wireless Communications System - A method for assisting the adaptation of a signal from a first node ( | 02-18-2010 |
| 20100046650 | Method for Precoding Using a Block Diagonal Matrix - An objective problem of the invention is to provide a mechanism for improving the performance of a radio access network. According to a first aspect of the present invention, the object is achieved by a method in a first node for adapting a multi-antenna transmission to a second node over an effective channel. The first node and the second node are comprised in a wireless communication system. The method comprises the steps of obtaining at least one symbol stream and determining a precoding matrix having a block diagonal structure. The method comprises the further steps of precoding the at least one symbol stream with the determined precoding matrix, and transmitting the at least one precoded symbol stream over the effective channel to the second node. | 02-25-2010 |
| 20100061344 | METHOD AND ARRANGEMENTS FOR LOAD BALANCING OF POWER AMPLIFIERS - The present invention relates to a transmit unit, a control unit and a method in a transmit unit comprising at least two antennas for transmitting signals relating to a plurality of radio channels. The transmit unit transmit signals relating to a first subset of channels from the first antenna and pilot signals from the first antenna for use a reference for the first subset of channels. The transmit unit is further arranged to transmit signals relating to a second subset of channels from the second antenna using single antenna transmission. The transmit unit also transmits pilot signals on a second type of pilot channel such as the S-CPICH, different from the first type of pilot channel, from the second antenna for use as a reference for the second subset of channels, wherein the first and second type of pilot channels are substantially covering the same area. | 03-11-2010 |
| 20100067459 | HARQ in Spatial Multiplexing MIMO System - Methods and apparatus for signaling scheduling information in a spatial multiplexing wireless communications system ( | 03-18-2010 |
| 20100099362 | Calibration Method and Device in Telecommunication System - A device system, computer medium and method for calibrating at least one impairment of a signal transmitted from a transmitting unit to a receiving unit, the method including receiving at the receiving unit at least two signals transmitted from the transmitting unit, estimating at the receiving unit, based on the received at least two signals, at least one parameter associated with transmit chain links between the transmitting unit and corresponding antennas of the transmitting unit, collecting the at least one parameter in a measurement report at the receiving unit, and transmitting the measurement report from the receiving unit for correcting the at least one impairment based on the at least one parameter. | 04-22-2010 |
| 20100120460 | Method and Apparatus for Improving Transmission Efficiency in a Mobile Radio Communications System - A method and apparatus of improving the performance of a mobile radio system ( | 05-13-2010 |
| 20100167690 | user terminal for enhanced security in a wireless communications system, and a system for its use - The invention discloses a user terminal ( | 07-01-2010 |
| 20100220657 | METHOD AND ARRANGEMENT RELATING TO COMMUNICATIONS NETWORK - The present invention relates to a method and arrangements in a communications system enabled for transmission of several data streams to or from different receivers ( | 09-02-2010 |
| 20100234043 | Collective Positioning in Mobile Communication Systems - Methods and devices for managing a cellular communication system ( | 09-16-2010 |
| 20100281333 | FEEDBACK WITH UNEQUAL ERROR PROTECTION - Methods and devices provide a feedback message having unequal error protection. The feedback message may include channel quality indicators. The channel quality indicators may have different levels of error protection based on a transmission property. | 11-04-2010 |
| 20100323739 | LINK ADAPTATION IN A WIRELESS TELECOMMUNICATIONS SYSTEM - The invention relates to control of link resources in a wireless telecommunications system, in which instant channel feedback information is transmitted from a mobile terminal in response to receipt of a selection message from a basestation, and the instant channel feedback information is used for real-time resource allocation and adaptation at the basestation. The feedback information includes channel quality information derived from pilot signals and from pre-allocated transmission weights. | 12-23-2010 |
| 20110096727 | Methods and Devices for Multiple Modulated Data Streams Signaling - Embodiments relate to a base station ( | 04-28-2011 |
| 20110097992 | INCREASED DIVERSITY BY MEANS OF REPEATERS - The invention relates to communication in a wireless communications network in which a cell comprises areas with different topographies, for example between indoor and outdoor areas. The communication is optimized by means of a repeater for use in a fixed wireless broadband communications system, comprising receiving means for receiving a downlink signal from a base station, signal processing means for processing the downlink signal to produce an output signal, and transmitting means for transmitting the output signal, said repeater being characterized in that it comprises means for creating diversity in the output signal. | 04-28-2011 |
| 20110158305 | Reporting Channel Quality Information for Multiple Channels - Aspect of the invention relate to a method for reporting channel quality information from a user equipment (UE) to a base station. In some embodiments, the method includes: determining a first channel quality value (CQ | 06-30-2011 |
| 20110268063 | SYSTEM AND METHOD FOR ALLOCATING TRANSMISSION RESOURCES BASED ON A TRANSMISSION RANK - A method for wirelessly transmitting data using a plurality of transmission layers includes estimating a number of data vector symbols to be allocated to one or more user data codewords during the subframe and determining a number of bits in the one or more user data codewords. The method also includes calculating a nominal number of control vector symbols to allocate to control information based, at least in part, on the estimated number of data vector symbols and the determined number of bits in the one or more user data codewords. Additionally, the method includes determining an offset value based, at least in part, on a number of layers over which the wireless terminal will be transmitting during the subframe and calculating a final number of control vector symbols by multiplying the nominal number of control vector symbols and the offset value. The method also includes mapping one or more control codewords to the final number of control vector symbols and transmitting vector symbols carrying the one or more user data codewords and the one or more control codewords over the plurality of transmission layers during the subframe. | 11-03-2011 |
| 20120014328 | HARQ in Spatial Multiplexing MIMO System - A method and apparatus for signaling scheduling information in a spatial multiplexing wireless communications system, as well as corresponding methods and apparatus for processing such signaling information, are disclosed. Signaling scheduling information includes scheduling first and second transport blocks for simultaneous transmission during a first transmission interval on first and second data substreams, respectively, and assigning a single re-transmission process identifier for the first transmission interval and transmitting first scheduling information for the first transmission interval. The first scheduling information includes the re-transmission process identifier and first disambiguation data. Additionally, at least one of the first and second transport blocks is scheduled for re-transmission during a second transmission interval. Second scheduling information for the second transmission interval is also transmitted; the second scheduling information including the re-transmission process identifier and second disambiguation data. | 01-19-2012 |
| 20120033755 | Transmit Mode Switching for MIMO Base Stations - In a transmitter using at least two transmitting antennas a STTD transmitter is used in combination with a common pre-coding transmitter for power amplifying power balancing. A selector can be provided for selecting data/channels transmitted using STTD and common pre-coding such that for one channel type, STTD or common pre-coding is used whereas the combination of both STTD and common pre-coding is used for a different data/channel type. By selectively using both STTD and common pre-coding for power amplifier power balancing, an improved power balancing is achieved. At the same time, the STTD gain is obtained in the relevant cases but the STTD loss in other cases is avoided. | 02-09-2012 |
| 20120033759 | Phase Calibration and Erroneous Cabling Detection for a Multi-Antenna Radio Base Station - A radio base station has at least two radio chains and a precoder for precoding information symbols by a precoding matrix for multi-antenna transmission to a number of user equipment terminals. Precoding matrix statistics representative of phase coherency between at least two radio chains is compiled based on feedback information representative of preferred precoding matrix from one or more user equipment terminals (S | 02-09-2012 |
| 20120063525 | ARRAY ANTENNA ARRANGEMENT - A wireless communication system comprising at least one base station in a communication cell, wherein the base station is equipped with at least one array antenna comprising at least two antenna ports which are connected to respective at least two corresponding antenna elements, wherein at least two of the at least two antenna elements have essentially the same polarization. The array antenna is arranged for communication via at least two antenna radiation lobes, each antenna radiation lobe communicating an information stream to at least one user equipment (UE) in the cell, wherein each antenna radiation lobe is individually controllable both in azimuth and elevation, whereby the communication of the information streams is optimized. | 03-15-2012 |
| 20120082202 | Methods and Systems for Combined Cyclic Delay Diversity and Precoding of Radio Signals - In a transmitter or transceiver, signals can be precoded by multiplying symbol vectors with various matrices. For example, symbol vectors can be multiplied with a first column subset of unitary matrix which spreads symbols in the symbol vectors across virtual transmit antennas, a second diagonal matrix which changes a phase of the virtual transmit antennas, and a third precoding matrix which distributes the transmission across the transmit antennas. | 04-05-2012 |
| 20120108186 | TRANSMITTER WITH MULTIPLE TRANSMIT ANTENNAS USING POLARIZATION - A transmitter for transmitting data in a cellular radio system is provided. The transmitter transmits data to User Equipment(s) using multiple transmitting antennas, using at least two polarization formers generating orthogonal polarizations of an input data stream. The transmitter further comprises a transmitter diversity arrangement adapted to receive input data to be transmitted to the User Equipment(s), where the transmitter diversity arrangement is connected to the input terminals of the polarization formers. By combining transmitter diversity with polarization former weights, orthogonality between multiple, in particular 4, transmitting antennas can be obtained. | 05-03-2012 |
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| 20100084121 | PLATE - The present invention relates to a plate of a plate heat exchanger, said plate comprising a material which constitutes a part of said plate with a surface made of this material positioned to be in direct contact with a chloride-containing cooling liquid, such as sea water, in which the material is a duplex stainless steel alloy containing in weight-%: C max 0.06%, Si max 1.5%, Mn 0-3.0%, Cr 23.0-32.0%, Ni 4.9-10.0%, Mo 3.0-8.0%, N 0.15-0.5%, B 0.-0.010%, S max 0.030%, Co 0-3.5%, W 0-3.0%, Cu 0-2.0%, Ru 0-0.3%, Al 0-0.2%, Ca 0-0.010% balance Fe and normal occurring impurities, wherein the ferrite content is 35-70 volume-%. | 04-08-2010 |
| 20100316522 | DUPLEX STAINLESS STEEL ALLOY AND USE OF THIS ALLOY - The present invention relates to a duplex stainless steel alloy containing in weight-%: C max 0.03%, Si<0.30%, Mn 0-3.0%, P max 0.030%, S max 0.050%, Cr 25-29%, Ni 5-9%, Mo 4.5-8%, W 0-3%, Cu 0-2%, Co 0-3%, Ti 0-2%, Al 0-0.05%, B 0-0.01%, Ca 0-0.01%, and N 0.35-0.60%, balance Fe and normal occurring impurities, wherein the ferrite content is 30-70 volume-%, and wherein each weight-% of Mo above may optionally be replaced by two (2) weight-% W. | 12-16-2010 |
| 20110059335 | Composite Tube - A composite tube having a corrosion resistant member and a load-bearing member is provided. The corrosion resistant member is a Cu—Al alloy and has a wall thickness of at least 0.5 mm, while the load-bearing member is a Fe, Ni or Co based alloy having a wall thickness of at least 1 mm. The composite tube can be manufactured by conventional means like extrusion, rolling, welding etc. The composite tube is to be used in environments where the risk of metal dusting, coking or carburization is high | 03-10-2011 |
| Patent application number | Description | Published |
|---|
| 20100084121 | PLATE - The present invention relates to a plate of a plate heat exchanger, said plate comprising a material which constitutes a part of said plate with a surface made of this material positioned to be in direct contact with a chloride-containing cooling liquid, such as sea water, in which the material is a duplex stainless steel alloy containing in weight-%: C max 0.06%, Si max 1.5%, Mn 0-3.0%, Cr 23.0-32.0%, Ni 4.9-10.0%, Mo 3.0-8.0%, N 0.15-0.5%, B 0.-0.010%, S max 0.030%, Co 0-3.5%, W 0-3.0%, Cu 0-2.0%, Ru 0-0.3%, Al 0-0.2%, Ca 0-0.010% balance Fe and normal occurring impurities, wherein the ferrite content is 35-70 volume-%. | 04-08-2010 |
| 20100316522 | DUPLEX STAINLESS STEEL ALLOY AND USE OF THIS ALLOY - The present invention relates to a duplex stainless steel alloy containing in weight-%: C max 0.03%, Si<0.30%, Mn 0-3.0%, P max 0.030%, S max 0.050%, Cr 25-29%, Ni 5-9%, Mo 4.5-8%, W 0-3%, Cu 0-2%, Co 0-3%, Ti 0-2%, Al 0-0.05%, B 0-0.01%, Ca 0-0.01%, and N 0.35-0.60%, balance Fe and normal occurring impurities, wherein the ferrite content is 30-70 volume-%, and wherein each weight-% of Mo above may optionally be replaced by two (2) weight-% W. | 12-16-2010 |
| 20110059335 | Composite Tube - A composite tube having a corrosion resistant member and a load-bearing member is provided. The corrosion resistant member is a Cu—Al alloy and has a wall thickness of at least 0.5 mm, while the load-bearing member is a Fe, Ni or Co based alloy having a wall thickness of at least 1 mm. The composite tube can be manufactured by conventional means like extrusion, rolling, welding etc. The composite tube is to be used in environments where the risk of metal dusting, coking or carburization is high | 03-10-2011 |
