Patent application number | Description | Published |
20120315948 | Method and Apparatus for Controlling Energy Consumption in a Multi-Antenna Base Station - The present invention relates generally to a method for use in a radio base station of a wireless communications network and to an energy control apparatus ( | 12-13-2012 |
20130039348 | Transmitter, Receiver and Methods for Downlink Control Signalling - Downlink control information (DCI) extensions to support 3GPP Rel-10 functionalities comprise minimal extensions of DCI format 2B. In some embodiments, only two extra bits ( | 02-14-2013 |
20130177094 | PRECODER FOR SPATIAL MULTIPLEXING, MULTIPLE ANTENNA TRANSMITTER - A method of spatially precoding data includes determining a transmission rank of a communication channel and selecting a set of one or more precoding filters derived from a single generator matrix based on said transmission rank. The method also includes precoding data for transmission to a remote device using said precoding filters in a predetermined order according to a predetermined precoding sequence. The precoding may include using different ones of said precoding filters during different precoding intervals in a predetermined precoding period of the predetermined precoding sequence. Additionally, precoding data for transmission may involve traversing an Orthogonal Frequency Division Multiplexing (OFDM) resource block in an alternating pattern during said predetermined precoding period. | 07-11-2013 |
20130195161 | Method and Arrangement in a Wireless Communication System - The invention relates to methods and arrangements for rank adaptation for transmissions over a multipie-input-muttipie-output, M1MO, channel in a wireless communications system. A receiving node ( | 08-01-2013 |
20130202058 | Antenna Device and Method for Precoding Data in a Multiple-Input Multiple-Output System - An antenna device and method for precoding data in a MIMO system. The antenna device comprises a plurality of physical antennas in a distributed antenna system and a MIMO precoder. The MIMO precoder has a plurality of inputs for a plurality of data streams and a plurality of outputs for the plurality of data streams. A second precoder is disposed in series with the MIMO precoder. The second precoder maps a data stream to an output associated with a physical antenna port associated with at least one of the plurality of physical antennas. | 08-08-2013 |
20130229980 | Radio Base Station and Method Therein for Transmitting a Data Signal to a User Equipment in a Radio Communications Network - Embodiments herein relate to a method in a radio base station ( | 09-05-2013 |
20130230081 | Radio Base Station and Method Therein for Transforming a Data Transmission Signal - Embodiments herein relate to a method in a radio base station ( | 09-05-2013 |
20130308588 | OPTIMIZED SIGNALING OF DEMODULATION REFERENCE SIGNAL PATTERNS - Orthogonality in cyclic shift (CS) and orthogonal cover code (OCC) selection for DMRS in MIMO is improved by new n | 11-21-2013 |
20130329570 | CHANNEL QUALITY ESTIMATION FROM RAW BIT ERROR RATE - Channel quality metrics (such as SINR, BLER, and the like) are derived from a raw bit error rate (RBER), defined as the error rate of raw bits output by a demodulator. These initial raw bits are decoded and error-checked (or error-corrected). The error-free decoded bits are re-encoded, and the regenerated raw bits are compared to the initial raw bits to determine the RBER. The RBER is then converted to SINR, BLER, or other channel quality metric. The RBER-based metrics are derived from a data channel rather than reference signals, and hence more accurately reflect deviations from nominal transmission power level, and include receiver demodulator impairments. | 12-12-2013 |
20140003383 | SYSTEM AND METHOD FOR ALLOCATING TRANSMISSION RESOURCES BASED ON A TRANSMISSION RANK | 01-02-2014 |
20140029557 | HARQ Process Continuation after CQI-Only Report - Techniques for controlling synchronous HARQ retransmissions are disclosed, in which non-adaptive retransmissions scheduled for a first transmission time interval are automatically deferred to a later transmission time interval in the event that a control message prohibiting the retransmission during the first transmission interval is received. In an exemplary method, a NACK message is received in response to a previous data transmission corresponding to a stop-and-wait HARQ process, and a synchronous HARQ retransmission is scheduled for a first transmission interval in response. A control message indicating that data for the stop-and-wait HARQ process may not be sent during the first transmission interval is received, and the synchronous HARQ retransmission is automatically deferred to a second transmission interval, responsive to the control message. An explicit grant is not required to trigger the retransmission during the second transmission interval. | 01-30-2014 |
20140044079 | METHODS AND ARRANGEMENTS FOR A MOBILE COMMUNICATIONS NETWORK - A procedure for synchronization of re-configuration of RRC procedures between the radio base station and the UE is achieved by associating a new configuration to be used by a UE with an additional UE identity. The UE is normally identified by a first UE identity, but is informed in a re-configuration message that the UE also has the additional UE identity. The UE is identified by the additional UE identity when the new configuration is to be activated. Hence, when the radio base station detects that the UE responds to requests, which included the additional UE identity, the radio base station can conclude that the UE has activated the new configuration. | 02-13-2014 |
20140056156 | CSI Reporting for a Set of CSI-RS Resources - A method implemented by a wireless terminal of reporting channel state information to a wireless communication network is disclosed. The wireless terminal receives reference symbols on a set of channel state information reference symbol (CSI-RS) resources, and determines a common transmission rank for the set of CSI-RS resources, based on the reference symbols received on a subset of those CSI-RS resources. The terminal then generates CSI feedback as a function of the common transmission rank, and transmits the CSI feedback to the communication network. The CSI feedback may include the common transmission rank itself, or may include different transmission ranks for different CSI-RS resources each determined as a function of the common transmission rank. A complementary method in which a network node uses such a CSI feedback to perform rank adaptation for the set of CSI-RS resources is also disclosed. | 02-27-2014 |
20140073313 | Artificial Interference Injection for Channel State Information Reporting - A system and method for improving the link adaptation in a wireless communication system is disclosed. User Equipment (UE) forms an interference hypothesis by amending a measured interference and noise by artificially injecting, to the measured interference and noise, interference corresponding to at least one emulated interfering isotropic signal that is virtually transmitted over an associated estimated effective channel. The UE further determines at least one channel state information (CSI) report based on the interference hypothesis, and transmits the CSI report to the network. | 03-13-2014 |
20140086166 | METHODS AND ARRANGEMENTS IN A WIRELESS COMMUNICATION SYSTEM - An object of some embodiments is to enable more dynamic and flexible transmission of reduced-power subframes. Particular embodiments provide a method in a network node. The method comprises transmitting a downlink scheduling assignment for a subframe to a wireless terminal. The scheduling assignment is comprised in control information. The control information further comprises an indication of a power offset that is or will be used for data transmission in the subframe relative to reference signal transmission. | 03-27-2014 |
20140086188 | Methods and Devices for Transmission of Control Data to a User Equipment - A method for transmission of control data to a user equipment in a mobile telecommunication system, wherein the method comprises sending control data to the user equipment in a data transmission, and performing, by the user equipment, a blind decoding of transmission elements within the data transmission in order to detect the control data in a data region in the data transmission. | 03-27-2014 |
20140092826 | Methods, Network Nodes and User Equipments in a Wireless Network for Communicating an EPDCCH - A method performed by a network node of a wireless communication network is provided for communicating an enhanced Physical Downlink Control Channel, ePDCCH, to a user equipment, UE. The method comprises transmitting ( | 04-03-2014 |
20140092827 | USER EQUIPMENT, RADIO NETWORK NODE AND METHODS THEREIN - Embodiments herein relate to a method in a user equipment ( | 04-03-2014 |
20140092852 | SYSTEM AND METHOD FOR ALLOCATING TRANSMISSION RESOURCES - A method for wirelessly transmitting data using a plurality of transmission layers includes estimating a number of vector symbols to be allocated to transmission of user data codewords during a subframe and determining a number of bits in a plurality of user data codewords to be transmitted during the subframe. The method also includes calculating a number of control vector symbols to allocate to control information based at least in part on the estimated number of vector symbols and the determined number of bits. Additionally, the method includes mapping control codewords to the calculated number of control vector symbols and transmitting vector symbols carrying the user data codewords and the control codewords over the plurality of transmission layers during the subframe. | 04-03-2014 |
20140092876 | SYSTEM AND METHOD FOR ALLOCATING TRANSMISSION RESOURCES - A method for wirelessly transmitting data and control information using a plurality of transmission layers includes determining a number of bits in one or more user data codewords to be transmitted during a subframe and calculating, for each of M control signals to be transmitted during the subframe, a value (Q′), based at least in part, on the number of bits in the one or more user data codewords, and an estimated number of user data vector symbols onto which the one or more user data codewords will be mapped. The estimate of the number of user data vector symbols for a particular one of the M control signals depends, at least in part, on a number of control vector symbols to be allocated to one or more others of the M control signals. The method also includes determining a number of control vector symbols onto which to map each of the M control signals based on a respective value Q′ calculated for that control signal, mapping the control signals for that control signal, and transmitting the control vector symbols. | 04-03-2014 |
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 |
20140105042 | Methods and Arrangements for Reference Signal Measurements - Embodiments are disclosed which improve the accuracy of measurement quantities obtained based on filtered measurements, by enabling filter memory reset events triggered by specific configuration and/or reconfiguration commands. According to some embodiments, a method for obtaining a measurement quantity is provided. The measurement quantity is based on a filtered reference signal (RS) measurement value. The method is executed in a wireless device, e.g. a user equipment (UE). According to the method, the wireless device receives ( | 04-17-2014 |
20140112173 | Configuration of Coordinated Multipoint Transmission Hypotheses for Channel State Information Reporting - A system and method for providing an eNodeB with the flexibility to configure a Channel State Information (CSI) report to match a specific Coordinated Multipoint (CoMP) transmission hypothesis, which is a candidate for a downlink transmission to a User Equipment (UE) is disclosed. A UE receives, from the eNodeB, a configuration message that specifies a CSI report. The CSI report is specified by a particular interference hypothesis and a particular desired signal hypothesis corresponding to data transmission over at least one effective channel characterized by a specific reference signal. The UE estimates interference according to the interference hypothesis, and/or estimates at least one effective channel by performing measurements on the specific reference signal, and determines a CSI report based on the interference estimation and on the estimated effective channel. The UE also transmits the CSI report to the eNodeB. | 04-24-2014 |
20140112248 | Load-Invariant Configuration of Interference Measurement Resources - According to one aspect of this disclosure, the configuration of which Interference Measurement Resources, “IMRs”, a given user equipment, “UE”, should measure for Channel State Information, “CSI”, reporting is made more or less invariant to dynamic traffic variations affecting the set of Coordinated Multi-Point, “CoMP”, transmission points used for serving the UE, or to the use of dynamic blanking for those transmission points. These goals are achieved at least in part by configuring one or more of the transmission points to follow a first rule embodying a negative logic. According to the first rule, the transmission point transmits on a given IMR if it has been deemed as being not likely to transmit data at a time relevant to the IMR, and, conversely, to not transmit the IMR if it has been deemed as being likely to transmit data at a time relevant to the IMR. | 04-24-2014 |
20140112252 | Search Area Based Control Channel Monitoring - According to an embodiment of the invention, a method of operating a control node for communication with at least one receiving node is provided. The communication is structured in frames comprising several subframes ( | 04-24-2014 |
20140113677 | USER EQUIPMENT AND A METHOD THEREIN FOR TRANSMISSION POWER CONTROL OF UPLINK TRANSMISSIONS - A UE and a method therein for transmission power control of uplink transmissions are provided. The method comprises receiving, through signalling a configuration indicating at least one reference signal, RS, and a reference transmission power level for each indicated RS. The method further comprises measuring received power of the indicated at least one RS, and for each measured received power, determining a pathloss, PL, based on the measured received power and the reference transmission power level for each measured received power. The method further comprises determining an uplink transmission power based on at least one determined PL. | 04-24-2014 |
20140126660 | METHOD AND APPARATUS FOR CONVEYING PRECODING INFORMATION IN A MIMO SYSTEM - Method and apparatus for conveying precoding information in a control message (M) from a first node ( | 05-08-2014 |
20140126661 | METHOD AND APPARATUS FOR CONVEYING PRECODING INFORMATION IN A MIMO SYSTEM - Method and apparatus for conveying precoding information in a control message (M) from a first node ( | 05-08-2014 |
20140140283 | SUPPORT FOR RETRANSMITTING A TRANSPORT BLOCK WITH A DIFFERENT NUMBER OF LAYERS THAN A PREVIOUS TRANSMISSION ATTEMPT - A method of conveying transport block size (TBS) information includes determining TBS parameters for a wireless transmission of data between a first node and a second node based on a first number of transmission layers associated with the wireless transmission. The method also includes generating a control message indicating the TBS parameters and transmitting the control message to the second node. The method also includes transmitting a transport block to the second node in accordance with the TBS parameters indicated by the control message. The transport block is transmitted over a first number of transmission layers. The method also includes retransmitting the transport block to the second node in accordance with the TBS parameters indicated by the control message. The transport block is retransmitted over a second number of transmission layers that differs from the first number of transmission layers. | 05-22-2014 |
20140160958 | Method and Apparatus for Measuring Interference in a Telecommunications System - A receiving unit or a transmitting unit of a wireless network, for facilitating noise and interference measurements on an air interface. The receiving unit includes: a network interface which obtains information relating to a time-varying layout of a silent resource element (RE) grid; an electronic memory having code in communication with the network interface which stores the information; and a processing unit in communication with the electronic memory that takes a presence of a silent RE grid into account in the reception of a control or a data channel. | 06-12-2014 |
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 |
20140219152 | Method and an Apparatus in a User Equipment for Controlling Transmission Power of the User Equipment - Disclosed are methods and apparatuses in user equipments ( | 08-07-2014 |
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 |
20140247775 | Initializing Reference Signal Generation in Wireless Networks - A transmitting node uses different reference signal sequences for different types of enhanced control channels. An example method begins with generating ( | 09-04-2014 |
20140269577 | PARAMETERIZED CODEBOOK SUBSETS FOR USE WITH PRECODING MIMO TRANSMISSIONS - One aspect of the teachings presented herein provides advantages for sending precoder selection feedback from a transceiver to another transceiver, for use by the other transceiver as precoding recommendations. The transceiver generates two types of precoder selection feedback, where one type uses a smaller signaling payload than the other and therefore provides a distinct reduction in the signaling overhead associated with reporting precoding recommendations. The transceiver uses the reduced-overhead type of reporting when reporting at certain times, or on certain channels, or in response to control signaling. In one example, a UE in an LTE network sends precoder information to an eNodeB on the PUCCH by sending smaller-range index values that index only a subset of precoders, but sends full-range index values when reporting on the PUSCH, which index a larger set of precoders. | 09-18-2014 |
20140294112 | Method and Arrangement for Adapting a Multi-Antenna Transmission - A method in a first node for adapting a multi-antenna transmission to a second node over a wireless channel is provided. The wireless channel has at least three inputs and at least one output. The first node and the second node are comprised in a wireless communication system. The method includes obtaining at least one symbol stream, determining a precoding matrix having a product structure created by a block diagonal matrix being multiplied from the left with a block diagonalizing unitary matrix, precoding the at least one symbol stream with the determined preceding matrix, and transmitting the precoded at least one symbol stream over a wireless channel to the second node. | 10-02-2014 |
20140301316 | SIGNALING OF PRECODER-RELATED IFNORMATION IN A MIMO SYSTEM - Techniques are disclosed for signaling a pattern of cyclic shifts and orthogonal cover codes for use by a wireless device in multi-layer transmissions. In one example method, a signal includes B bits for identifying a reference signal is received, wherein each of several available reference signals is defined by a cyclic shift and an orthogonal cover code. The B bits are used to identify the cyclic shift and orthogonal cover code according to pre-determined tables that map each value of the B bits to a pattern of cyclic shift and orthogonal cover code combinations for a multi-layer transmission scheme. The patterns for the multi-layer transmission scheme include first and second patterns based on the same cyclic shifts, but where some, but not all, of the cyclic shifts in the first pattern are associated with the same corresponding orthogonal cover codes in the second pattern. | 10-09-2014 |
20140301353 | Broadcast of Information for New Carrier Type - Base station and UE and methods therein for broadcast in a wireless communication network. The method in the base station comprises determining ( | 10-09-2014 |
20140313912 | Configuration of Interference Averaging for Channel Measurements - The present disclosure relates to a method for determining CSI in a user terminal of a wireless communication network. The method comprises receiving ( | 10-23-2014 |
20140334437 | Mapping User Data onto a Time-Frequency Resource Grid in a Coordinated Multi-Point Wireless Communication System - Methods and apparatus are disclosed for receiving user data in a wireless communication system that employs coordinated multi-point transmission of the user data from a first cell serving a wireless terminal and a second cell site neighboring the first cell site. In an exemplary system, the first cell site maps control signals and user data to a time-frequency resources according to a first mapping pattern, while the second cell site maps control data and traffic data to the time-frequency resources according to a second mapping pattern. An exemplary method comprises extracting user data, according to the first mapping pattern, from time-frequency resources of a first transmission for the wireless terminal transmitted from the first cell site; detecting a control element transmitted by one of the first and second cell sites, the control element indicating that user data associated with the control element is mapped to the time-frequency resources according to the second mapping pattern; and, responsive to said detecting, extracting user data according to the second mapping pattern from time-frequency resources of a second transmission for the wireless terminal transmitted from the second cell site. | 11-13-2014 |
20150078191 | System And Method For Providing Interference Characteristics For Interference Mitigation - According to certain embodiments, a method for providing interference characterization data by a network node includes providing telecommunications services for a first wireless device located associated with the network node. The network node identifies characteristic data associated with at least one characteristic of an interfering signal associated with a second wireless device. The characteristic data associated with the interfering signal associated with the second wireless device is transmitted to the first wireless device. The at least one characteristic may identify at least one power characteristic associated with the interfering signal. | 03-19-2015 |
20150078302 | System And Method For Providing And Using Radio Network Temporary Identifiers Signatures For Interference Cancellation - According to certain embodiments, methods and systems for providing device-specific radio network temporary identifiers (C-RNTI) signatures may be provided for interference cancellation. The methods and systems may include assigning a subset of C-RNTIs to a cell. A mapping may be defined between the subset of C-RNTI signatures and a set of C-RNTI indices. Each C-RNTI signature within the subset may be identifiable by a first wireless device via the mapping. The mapping between the subset of C-RNTI signatures and the set C-RNTI indices may be provided to the first wireless device. A C-RNTI indices indicating at least one currently scheduled wireless device may be provided to the first wireless device. | 03-19-2015 |
20150078303 | System and Method for Providing Interference Characteristics for Interference Mitigation - According to certain embodiments, methods and systems include providing interference characterization data by a network node to a first wireless device for use in performing interference mitigation. A method for providing interference characterization data by a network node may include providing telecommunications services for a first wireless device associated with the network node. Characteristic data associated with at least one characteristic of an interfering signal associated with a second wireless device may be identified by the network node. The characteristic data associated with the interfering signal associated with the second wireless device may be transmitted to the first wireless device. The at least one characteristic may identify a resource allocation granularity configured from at least one physical resource block pair associated with the interfering signal. | 03-19-2015 |