Patent application number | Description | Published |
20080253336 | Multi-Carrier CQI Feedback Method and Apparatus - A radio base station transmits data symbols to a mobile terminal on multiple frequency carriers, e.g., in accordance with the MC-WCDMA or cmda2000 3x air interface protocols. The radio base station instructs the mobile terminal to report channel quality measurements obtained by the terminal for the multiple carriers over the same uplink channel during successive reporting intervals. According to one embodiment, the mobile terminal reports channel quality by receiving data symbols transmitted on a plurality of frequency carriers in a multi-carrier CDMA environment and measuring channel quality for the different frequency carriers. The mobile terminal reports individual ones of the channel quality measurements over the same uplink channel during successive reporting intervals. | 10-16-2008 |
20080293358 | Wireless Communication Mimo System With Repeaters - The present invention relates to a wireless communication system (C) comprising at least one base station ( | 11-27-2008 |
20090010356 | Array Antenna Arrangement - The present invention relates to a wireless communication system, comprising at least one base station in a communication cell. The base station is equipped with at least one array antenna comprising at least two antenna ports which are coupled to respective at least two corresponding antenna Q elements, where at leas 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 UE (user equipment) in the cell. According to a certain aspect of the present invention, in a first mode 0 operation, the array antenna is arranged for communication via one antenna radiation lobe. The present invention also relates to a method for performing said communication. | 01-08-2009 |
20090098874 | NARROW BEAM HANDOVER - 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, a network control unit sends a radio link setup request to a selected cell-serving network unit for configuration of a new serving radio link. Before responding to the radio link setup request the cell-serving network unit performs uplink measurements with respect to the mobile unit, and a narrow target beam is selected within a cell served by the cell-serving network unit based on these measurements. The cell-serving network unit then configures the new serving radio link for the considered mobile unit directly with the selected narrow target beam. Consequently the system can perform the handover procedure using narrow beams only, without first establishing the radio link with a cell-wide beam and then reconfiguring the radio link onto a narrow beam. | 04-16-2009 |
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 |
20090323596 | Scheduling For Uplink And Downlink Time Of Arrival Positioning - The present invention relates to methods and arrangements for scheduling of positioning channels and traffic in order to recover a sufficiently perfect orthogonality including scheduling tasks for the downlink and uplink direction. A scheduling manager co-ordinates the scheduling and measurement timing of first and second positioning schedulers that, respectively, allocate uplink and downlink radio resources. | 12-31-2009 |
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 |
20100046382 | METHOD AND APPARATUS FOR IMPROVED SINGLE CELL ADAPTION DUE TO CHANGE IN ENVIRONMENT - A communication method for use in a wireless communications network is proposed, said method comprising the steps of—monitoring at least one property representative of the channel variability in time and/or frequency, for each of at least two channels in the cell, used to communicate with said at least two user terminals;—using the result of the monitoring to control, by a control node in the network or in one of the user terminals, the communication in the cell. The control of the communication may include artificially inducing time selectivity and/or frequency selectivity or selecting an operating mode for the cell. | 02-25-2010 |
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 |
20100118784 | Recommending a Transmission Mode for a MIMO-Supporting UE - The present invention relates to methods, a network controller unit ( | 05-13-2010 |
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 |
20100194650 | Antenna Weights Calculation Based on Users' Interference Rejection Capabilities - The present invention relates to a method and arrangement in a transmitter unit of a multi-antenna system for an improved calculating of the antenna weights for a beamforming transmission of data from a transmitter unit to a target receiver unit, whereby interfering signal components for receiving units other than the target receiving unit and the desired communication signal at a target receiving unit are weighted by receiver-specific parameters describing the receiver capabilities of said units in terms of their capability for interference suppression and/or signal enhancement. The invention also relates to a method and arrangement for scheduling of user equipments by using said information on the signal processing capabilities for received signals of each receiving unit. | 08-05-2010 |
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 |
20100272220 | Multi-Antenna Receiver Interference Cancellation Method and Apparatus - A composite signal including a plurality of component signal streams is processed using QR-decomposition to detect symbols and calculate a decision metric for each of the signal streams ( | 10-28-2010 |
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 |
20100304691 | Method And Arrangements For Signaling Control Information In A Communication System - The invention relates to devices and methods for signalling control information associated with transmission of data over a wireless channel. A second communication device receives (S | 12-02-2010 |
20100309801 | METHODS AND ARRANGEMENTS IN A MOBILE TELECOMMUNICATIONS SYSTEM - The present invention relates to a solution for taking into account that the interference, which each of the transmission resource elements is affected by, may differ between the different transmission resource elements when determining an interference estimate by determining a mixed interference estimate, e.g. based on both reference symbols and data symbols. Furthermore, signalling from the network is also introduced which makes it possible to control what the mixed interference estimate should be based on. | 12-09-2010 |
20100315969 | Methods and Arrangements in a Communication System - A method and arrangement in a first node ( | 12-16-2010 |
20100322330 | Mode Switching Between SU-MIMO and MU-MIMO - The present invention relates to a method and arrangements in a communication system for Multi User Multiple-Input-Multiple-Output (MU-MIMO) signaling via Multiple-Input-Multiple-Output (MIMO) antennas between a base station and one of a plurality of mobile terminals supporting both Single User and Multi User Multiple-Input-Multiple-Output (SU-MIMO and MU-MIMO) signaling modes. Switching between the modes is supported in the system and the modes have partly shared signaling. SU-MIMO mode signaling which is redundant, i.e. not needed, for MU-MIMO mode signaling is identified. Bits, i.e. data bits, of the identified redundant signaling is re-interpreted or re-defined to comprise signaling information associated with MU-MIMO mode. The signaling information associated with MU-MIMO mode is signaled to the mobile terminal by using the reinterpreted redundant bits. | 12-23-2010 |
20100322333 | HS-SCCH Orders for CQI Mode Selection - A network node ( | 12-23-2010 |
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 |
20110044456 | Activation of Code Multiplexing - The present invention relates to a system and a method for transmitting data between a first terminal and a communication network access point. The method may comprise the steps of defining a first set of scrambling codes and a second set of scrambling codes different from the first set of scrambling codes. Further, the method may comprise defining a first selection scheme for a first parameter. The method may still further comprise determining a current parameter value for the first parameter and evaluating the current parameter value on the basis of the first selection scheme and selecting a scrambling code from the first set of scrambling codes or the second set of scrambling codes based on the evaluation. Even further, the method may comprise packaging and transmitting data between the first terminal and the communication network access point using the selected scrambling codes. | 02-24-2011 |
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 |
20110237273 | OFDMA Uplink Interface Impact Recovery in LTE System - The present invention relates to methods and arrangements to estimate neighbour cell interference for admission control purposes. Information on at least the total estimated neighbour cell interference power and the own cell power for frequency subsets of tones ft is signalled to neighbouring cells for calculating a vector of impact values describing the interference impact of transmissions in a first impacting cell on respective impacted neighbour cells. The neighbour cell interference impact caused by a resource allocation in a first cell is estimated by help of the pre-calculated impact values such that resources are allocated to cause a minimised interference impact on said neighbouring cells. | 09-29-2011 |
20120008512 | Device, Packet And Method For Power Saving - In some embodiments herein a method in a first communication device ( | 01-12-2012 |
20130121269 | METHODS SELECTING MODULATION/CODING SCHEMES MAPPED TO MULTIPLE MIMO LAYERS AND RELATED USER EQUIPMENT - A method of operating a user equipment communicating with a base station of a radio access network may include selecting a multiple-input-multiple-output, MIMO, rank and a MIMO precoding entity from a codebook of MIMO precoding entities for a downlink communication from the base station to the user equipment. A modulation/coding scheme to be mapped to first and second MIMO layers of the downlink communication may be selected using the MIMO precoding entity. Channel quality information may be communicated identifying the MIMO precoding entity and the modulation/coding scheme from the user equipment to the base station. Related user equipment nodes are also discussed. | 05-16-2013 |
20130142174 | DEVICE AND METHOD FOR WCDMA UPLINK TRANSMISSIONS - A NodeB for a WCDMA system, arranged to transmit instructions to a UE for the UE's uplink transmissions. The NodeB is arranged to transmit the instructions on a dedicated downlink physical channel which the NodeB is arranged to use for transmissions to a plurality of UEs and which comprises a plurality of radio frames, where each radio frame comprises a number of slots and each slot comprises a number of WCDMA symbols. The instructions to the UE comprise Transmit Power Commands as well as other instructions to the UE for the UE's uplink transmissions. The NodeB is arranged to use a first WCDMA slot format for the TPC commands to the UE and a second WCDMA slot format for the other instructions to the UE. | 06-06-2013 |
20130182794 | ANTENNA DEVICE AND METHOD IN A MIMO SYSTEM - The invention relates to the technical field of radio communications, and in particular to an antenna device for a radio base station, and a method of operating an antenna device in a Multiple-Input Multiple-Output system. Embodiments of the invention disclose a secondary precoder ( | 07-18-2013 |
20130195032 | Apparatus and Method Relating to a Power Quotient Used in a Telecommunications System - There is provided a method for implicitly signaling a power quotient to a user equipment, the power quotient providing a relationship between a reference signal and a data signal. The method comprises the steps of receiving a downlink control signal from a radio base station, the downlink control signal containing an index signal that is provided for indicating a modulation and/or coding scheme being used by the radio base station, and using the index signal to determine a power quotient that is to be used by the user equipment. | 08-01-2013 |
20130207843 | DETERMINATION OF AN IMPAIRMENT COMPENSATION MATRIX FOR AN ANTENNA ARRAY - Determination of an impairment compensation matrix for compensation of impairments in an antenna array is disclosed. A plurality of different combinations of multi-signal transmissions which form at least one null at a respective location of a plurality of locations is determined. Each combination includes a multi-signal transmission that comprises at least two concurrent signal transmissions from at least two antenna subarrays of N antenna subarrays and the respective location. Based on signal characteristics associated with the plurality of different combinations of multi-signal transmissions and an expected signal reception at the plurality of locations, an impairment matrix that identifies an effect of impairments among the N antenna subarrays is determined. The impairment compensation matrix is determined based on the impairment matrix. | 08-15-2013 |
20130208704 | DEVICE AND METHOD FOR IMPROVED CLOSED LOOP DIVERSITY | 08-15-2013 |
20130215872 | DEVICE AND METHOD FOR HSPA WCDMA UPLINK PILOTS - A UE, for an HSPA WCDMA system, equipped with a first and a second transmit antenna, and arranged to use one or more sets of pre-coding weights for transmission. The UE is arranged to receive instructions from a NodeB on the set or sets of pre-coding weights to be used, and to transmit a first and a second pilot signal, and to use a first set of pre-coding weights for the first pilot signal and a second set of pre-coding weights for the second pilot signal, where the first set of pre-coding weights is the same as the UE uses for transmitting a first data stream, and to use different spreading codes for the first data stream and for the first pilot signal. | 08-22-2013 |
20130223203 | Hybrid ARQ With Variable Retransmission Energy - Hybrid Automatic Repeat Request (HARQ) is implemented using multi-bit feedback and variable retransmission energy. The multi-bit feedback provides information to the transmitter about the state of the decoder so that the transmitter can adapt retransmissions to the current state of the decoder. In some embodiments, the multi-bit feedback indicates a level of convergence reached by the decoder, and the transmitter varies an amount of energy used for the retransmission as a function of the multi-bit feedback. The transmitter can vary the amount of energy applied to the retransmission by varying the number of bits in the retransmission, or by varying a transmit power used for the retransmission. | 08-29-2013 |
20130223485 | Hybrid Automatic Repeat Request With Feedback Dependent BIT Selection - A multi-bit HARQ feedback is transmitted by a receiver to a transmitter. The multi-bit feedback is a function of a level of convergence reached by a decoder when the previously transmitted coded data bits bit were decoded. The transmitter is configured to select a set of coded data bits for a retransmission as a function of the multi-bit feedback. In some embodiments, different redundancy versions of the coded data bits may be selected as a function of the multi-bit feedback. In other embodiments, a bit puncturing or bit repetition pattern may be selected as a function of the multi-bit feed back. | 08-29-2013 |
20130287001 | MODULAR BASE STATION - A base station module configured to be part of a group of base station modules comprising the base station module and other base station modules, the group of base station modules together forming a base station, and having antennas for receiving radio signals from mobile stations in a base station communication band, a communication interface for transferring data obtained via the received radio signals to the other base station modules and for receiving corresponding data from the other base station module, a data handling unit selects data for transfer to the other base station modules and an uplink data processing unit processes channels used by a subset of the mobile stations communicating with the base station, where the subset is assigned to the base station module. The base station module uses the data received from the other base station modules to influence processing in the uplink data processing unit. | 10-31-2013 |
20130301620 | 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. | 11-14-2013 |
20130329656 | COMMON ORDERS FOR A SHARED CONTROL CHANNEL - A radio base station communicates with UEs on a shared control channel in a cell coverage area. A common control channel order, for transmission over the shared control channel for a group of multiple UEs in the cell, is associated with a common control channel order identifier and transmitted in the cell over the shared control channel. A UE in a shared cell coverage area receives and processes the common control channel order signal transmitted to the group of multiple UEs to detect the common control channel signal identifier. If the UE determines that common control channel signal identifier matches a common control channel signal identifier previously configured for or stored in each of the UEs in the group, then the UE processes the common control channel order and performs one or more actions in response to the processed common control channel order. | 12-12-2013 |
20140003383 | SYSTEM AND METHOD FOR ALLOCATING TRANSMISSION RESOURCES BASED ON A TRANSMISSION RANK | 01-02-2014 |
20140050161 | METHODS, NETWORK NODE, AND USER EQUIPMENT FOR UPLINK MULTIPLE-INPUT-MULTIPLE-OUTPUT - It is presented a method for controlling uplink multiple-input-multiple-output, MIMO. The method is performed in a network node and comprises the steps of: determining an inter-stream interference between two uplink streams in MIMO, Multiple Inputs Multiple Outputs, transmission; and controlling a selection of E-TFC, Enhanced dedicated transport channel Transport Format Combination, in response to the determined interference. | 02-20-2014 |
20140056374 | Method and Apparatus for Pilot Power Allocation in a Multi Antenna Communication System - The embodiments herein relate to a method in a base station ( | 02-27-2014 |
20140064189 | USER EQUIPMENT, BASE STATION AND METHODS RELATED TO MULTIPLE INPUT MULTIPLE OUTPUT - It is presented a method for controlling multiple input multiple output, MIMO, pilot channel boosting. The method is performed in a user equipment, UE, capable of MIMO transmissions using a primary and a secondary stream. The method comprising the steps of: determining a rank used for uplink transmissions from the UE; and determining a boosting parameter affecting power boosting of an Enhanced Dedicated Physical Control Channel, E-DPCCH, and a Secondary Dedicated Physical Control Channel, S-DPCCH, based on the rank. A corresponding UE, base station and associated method are also presented. | 03-06-2014 |
20140064392 | METHODS OF SELECTING MIMO RANKS AND RELATED DEVICES - A method of operating a wireless network node may include transmitting a first MIMO downlink communication to a wireless terminal according to a first MIMO rank, and receiving at least one HARQ ACK/NACK, message from the wireless terminal corresponding to the first MIMO downlink communication. A report may be received from the wireless terminal identifying a reported MIMO rank, and a second MIMO rank may be selected for a second MIMO downlink communication responsive to the at least one HARQ ACK/NACK message. The second MIMO downlink communication may be transmitted to the wireless terminal according to the second MIMO rank. | 03-06-2014 |
20140078959 | BASE STATION, USER EQUIPMENT AND METHODS THEREIN - Embodiments herein relate to a method in a base station ( | 03-20-2014 |
20140079147 | METHOD, APPARATUS, AND SYSTEM FOR USING COMMON AND DEMODULATION PILOT SIGNALS IN MULTI-ANTENNA WIRELESS COMMUNICATIONS - Multiple antennas employed at transmitting and receiving nodes can significantly increase a MIMO system capacity, especially when channel knowledge of link(s) between the transmitting and receiving nodes is available at the transmitting node. Channel knowledge may be acquired through feedback provided by the receiving node based on a plurality of common pilots transmitted by the transmitting node. The common pilots may include legacy and non-legacy pilots. If the feedback indicates that data demodulation at the receiving node can be enhanced, the transmitting node may also transmit demodulation pilot signal(s), which may coincide with the transmission of data. The receiving node can use the demodulation pilot signal(s), alone or with the common pilot signal(s), to demodulate data received from the transmitting node. The transmitting node may notify the receiving node to monitor for the demodulation pilot signal(s) through higher layer signaling and/or scheduling orders over a control channel. | 03-20-2014 |
20140079156 | Signal Combiner, Method, Computer Program and Computer Program Product - It is presented a signal combiner for combining transmission signals to foe supplied to four antennas devices, wherein two of the antenna devices are polarised in a first orientation and two of the antenna devices are polarised in a second orientation essentially orthogonal to the first orientation. The signal combiner comprises: four input connections arranged to receive the transmission signals; four output connections arranged to drive a respective one of the four of antenna devices using respective output signals. The signal combiner is arranged to combine transmission signals supplied on each input connection to all of the four output connections using beam forming and phase adjustment, such that, in use, each supplied transmission signal generates a central beam polarised in the first orientation and a side beam polarised in the second orientation, It is also presented a corresponding method, computer program and computer program product. | 03-20-2014 |
20140086351 | METHODS OF COMMUNICATING DATA INCLUDING SYMBOL MAPPING/DEMAPPING AND RELATED DEVICES - Data may be transmitted from a RAN node to a wireless terminal using a MIMO antenna array. A plurality of unmapped symbol blocks may be generated. Symbols of a first one of the plurality of unmapped symbol blocks may be mapped to first and second mapped symbol blocks so that the first mapped symbol block includes symbols of the first unmapped symbol block and so that the second mapped symbol block includes symbols of the first unmapped symbol block. The symbols of the first and second mapped symbol blocks may be precoded to provide precoded symbols of respective first and second MIMO precoding layers using a MIMO precoding vector. Each of the precoded symbols of the first and second MIMO precoding layers may be transmitted through the MIMO antenna array to the wireless terminal using a same TFRE. Related devices and terminals are also discussed | 03-27-2014 |
20140098904 | METHODS AND ARRANGEMENTS FOR SIGNALING CONTROL INFORMATION IN A COMMUNICATION SYSTEM - The invention relates to devices and methods for signalling control information associated with transmission of data over a wireless channel. A second communication device receives (S | 04-10-2014 |
20140120923 | 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. | 05-01-2014 |
20140133471 | METHODS AND DEVICES RELATING TO MIMO COMMUNICATIONS - Methods and devices supporting MIMO transmission/reception are discussed. For example, first and second data blocks may be transmitted/received respectively using first and second transmission/reception layers during a first TTI for rank two transmission/reception. A first HARQ process may be mapped to the first data block of the first layer for the first TTI. A second HARQ process may be mapped to the second data block of the second layer for the first TTI. Third, fourth, and fifth data blocks may be transmitted/received respectively using the first and second layers and using a third transmission/reception layer during a second TTI for rank three transmission/reception. The first HARQ process may be mapped to the third data block of the first layer for the second TTI. The second HARQ process may be mapped to the fourth and fifth data blocks of the second and third layers for the second TTI. | 05-15-2014 |
20140153483 | L1 CONTROL SIGNALING FOR UTRAN HSDPA - A Level-1 (L1) signaling flag is mapped to unused (invalid) bit sequences in Part 1 of the HS-SCCH—that is Part 1 bit encodings that are not defined in the UTRAN specifications—and a corresponding L1 command is encoded in Part 2. This allows UE ( | 06-05-2014 |
20140169487 | TRAFFIC AWARE COMMON PILOT CONFIGURATION - The present disclosure relates to a method for common pilot configuration, the method comprising steps of: determining information related to UEs served by a BS; and configuring transmission of at least one common pilot from the BS to the served UEs based on the determined UE related information. In an example 4-branch MIMO system, at most 4 common pilots are configurable to be transmitted, and the at least one common pilot is two common pilots newly introduced into a legacy system. | 06-19-2014 |
20140169498 | 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. | 06-19-2014 |
20140185698 | 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. | 07-03-2014 |
20140247747 | METHOD AND NODE RELATED TO CHANNEL ESTIMATION - A method comprises determining a first and a second sub-carrier associated with a channel, and multiplying a signal received on the first sub-carrier with a first number to form a first resulting signal. The first number multiplied with a known signal transmitted by a second transmitting node on the first sub-carrier equals a constant value. A signal received on the second sub-carrier is multiplied with a second number to form a second resulting signal. The second number multiplied with the known signal transmitted by the second transmitting node on the second sub-carrier equals the constant value. The second resulting signal is subtracted from the first resulting signal to obtain a signal for which interference from the second transmitting node is suppressed, and the channel is estimated based on the obtained signal. | 09-04-2014 |
20140247773 | Method and Arrangement in a Wireless Communications System - A method for assisting the adaptation of a signal from a first node to a second node is provided. The first node communicates with the second node in a wireless communication system over a radio link. The second node has a codebook comprising a set of possible information alternatives for assisting the adaptation of a signal received from the first node. The second node may select an information alternative from the codebook and send it to the first node to assist the first node in adapting the signal. The first node is configured with a number of subsets, each comprising a part of the possible information alternatives. The first node requests that the second node restrict the selection of information alternatives to one of the subsets, and in response, receives an information alternative from the second node that is selected from among the subsets configured according to the configuration request. | 09-04-2014 |
20140293817 | MULTI-CARRIER CQI FEEDBACK METHOD AND APPARATUS - A radio base station transmits data symbols to a mobile terminal on multiple frequency carriers, e.g., in accordance with the MC-WCDMA or cmda2000 3x air interface protocols. The radio base station instructs the mobile terminal to report channel quality measurements obtained by the terminal for the multiple carriers over the same uplink channel during successive reporting intervals. According to one embodiment, the mobile terminal reports channel quality by receiving data symbols transmitted on a plurality of frequency carriers in a multi-carrier CDMA environment and measuring channel quality for the different frequency carriers. The mobile terminal reports individual ones of the channel quality measurements over the same uplink channel during successive reporting intervals. | 10-02-2014 |
20140328255 | METHOD AND APPARATUS FOR CONVEYING DEMODULATION PILOT INFORMATION IN A MULTI ANTENNA WIRELESS COMMUNICATION SYSTEM - A radio network node ( | 11-06-2014 |
20140328308 | Radio Base Station with Asymmetric Interface Between Baseband Unit and RF Unit - The invention relates to an integrated antenna node ( | 11-06-2014 |
20140347992 | Common Pilot Gating in a Multi-Antenna Wireless Communication System - A multi-antenna base station ( | 11-27-2014 |
20150063502 | METHODS OF COMMUNICATING DATA INCLUDING SYMBOL MAPPING/DEMAPPING AND RELATED DEVICES - Data may be transmitted from a RAN node to a wireless terminal using a MIMO antenna array. A plurality of unmapped symbol blocks may be generated. Symbols of a first one of the plurality of unmapped symbol blocks may be mapped to first and second mapped symbol blocks so that the first mapped symbol block includes symbols of the first unmapped symbol block and so that the second mapped symbol block includes symbols of the first unmapped symbol block. The symbols of the first and second mapped symbol blocks may be precoded to provide precoded symbols of respective first and second MIMO precoding layers using a MIMO precoding vector. Each of the precoded symbols of the first and second MIMO precoding layers may be transmitted through the MIMO antenna array to the wireless terminal using a same TFRE. Related devices and terminals are also discussed. | 03-05-2015 |