| Patent application number | Description | Published |
|---|
| 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 |
