Patent application number | Description | Published |
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 |
20100046651 | METHOD FOR DETECTING TRANSMISSION MODE IN A SYSTEM USING MULTIPLE ANTENNAS - A user terminal, a communication network, a computer readable medium and a method for selecting at the user terminal a reception and decoding of a transmission mode used by a base station, the user terminal receiving communicated information from the base station, which has multiple antennas, via plural channels, the plural channels including a primary broadcast channel and at least one control channel. The method includes receiving at the user terminal initiating data from the base station via the primary broadcast channel, detecting from the received initiating data whether a first or a second transmission mode is used by the base station for the primary broadcast channel, the first transmission mode indicating that a first number of antennas are used by the base station and the second transmission mode indicating that a second number, different than the first number, of antennas are used by the base station to communicate with the user terminal, and using the detected first or second transmission mode of the primary broadcast channel to decode the at least one control channel. | 02-25-2010 |
20100067605 | 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 comprising the steps of: Obtaining ( | 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 |
20100104037 | Method And Device For Interference Suppression In User Terminal - A user terminal [ | 04-29-2010 |
20100120441 | INCREASING A SECTORIZATION ORDER IN A FIRST SECTOR OF AN ANTENNA ARRAY - A mechanism for increasing a sectorization order in a first sector of an antenna array. The object is achieved by a method in a network node. The network node and antenna array are comprised in a wireless communication system. The antenna array is deployed with a first sectorization. The network node comprises a first number of signal connections. Each signal connection is adapted to transmit and receive signals. The method comprises the step of splitting the first number of connections into a number of groups. Each one of the respective connection groups corresponds to one respective virtual sector resulting in a number of virtual sectors. The method further comprises the step of mapping the number of virtual sectors to the first sector, such that the first sector is split into the number of virtual sectors. | 05-13-2010 |
20100197330 | METHOD AND ARRANGEMENT 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. | 08-05-2010 |
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 |
20100284483 | PRECODER FOR SPATIAL MULTIPLEXING, MULTIPLE ANTENNA TRANSMITTER - A transmitter ( | 11-11-2010 |
20100284484 | OPEN LOOP PRECODER CYCLING IN MIMO COMMUNICATIONS - Data is transmitted over multiple input multiple output (MIMO) channels. Plural bit streams are modulated into multiple data symbol vectors. Each vector has a transmission rank with one vector for each MIMO channel. Transmission rank is the number of elements in a data symbol vector corresponding to the number of data streams being transmitted in parallel over each MIMO channel. The multiple data symbol vectors are preceded into multiple precoded symbol vectors using a plurality of precoder cycling sets, one set for each transmission rank including multiple different precoders. The precoders in each precoder cycling set are well-separated with respect to a plurality of distance measures. The precoding includes precoding each data symbol vector of a transmission rank with a precoder belonging to the precoder cycling set of that transmission rank. The precoded symbol vectors are then transmitted over the MIMO channels. | 11-11-2010 |
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 |
20110002233 | Link Quality Estimation Method and Apparatus in a Telecommunication System - Method and apparatus for enabling accurate link quality estimation of a wireless link between a sending node ( | 01-06-2011 |
20110007657 | Neighbour Cell Quality Measurement in a Telecommunications System - The present invention relates to methods and arrangements for neighbour cell quality measurements using silent resource element (RE) grids, and as well to a silent RE grid. | 01-13-2011 |
20110007698 | Methods and Arrangements for a Mobile Communications Network - The present invention relates to an improved procedure for synchronization of re-configuration of RRC procedures between the radio base station and the UE. This 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. | 01-13-2011 |
20110032895 | Method and Apparatus for Transmitting CSI on the PUSCH in an LTE System - The present invention relates to allowing configuring CSI reporting (step S- | 02-10-2011 |
20110039497 | Compensation for Propagation Delay in a Wireless Communication System - In a first aspect the present invention relates to a method of compensating for propagation delay in a wireless communication system. A first base station is in communication with a first plurality of antenna units which are adapted to be in wireless communication with a first terminal. The first terminal having a terminal antenna. The first plurality of antenna units is spatially separated. The method according to the first aspect comprises the steps of determining relative propagation delay from each of the first plurality of antenna units to the terminal antenna and using the determined propagation delay to establish a delay profile to compensate for propagation delay from each of the antenna units to the first terminal and applying the delay profile to a transmission between the base station and the terminal. In a second aspect the present invention further relates to a system implementing the method according to the first aspect. | 02-17-2011 |
20110080969 | MULTI-GRANULAR FEEDBACK REPORTING AND FEEDBACK PROCESSING FOR PRECODING IN TELECOMMUNICATIONS - A communications system comprises a second device ( | 04-07-2011 |
20110085507 | Method and Apparatus for Conveying Precoding Information in a MIMO System - Method and apparatus for conveying precoding information in a control message from a first node to a second node, with information on properties of an associated wireless data transmission (D) between the first and second nodes employing spatial multiplexing and precoding for the data transmission. The first node determines precoding parameters for signal transmission to the receiving node, optionally based on feedback reports from the receiving node. The first node encodes control information bits in precoding information fields of the control message by means of values in TBS fields of the control message, such that the TBS field values determine the interpretation of the bits in the precoding information field(s). The control message is then sent to the second node. | 04-14-2011 |
20110110403 | METHODS AND APPARATUS USING PRECODING MATRICES IN A MIMO TELECOMMUNICATIONS SYSTEM - The present invention provides methods and apparatus for transmitting and receiving over a MIMO radio link. In particular, a preceding matrix is applied to transmitted signals and constrained in such a way so as to limit the additional peak to average power ratio (PAPR) caused by applying the precoding matrix. For example, each row of the precoding matrix may have at least one zero element and one non-zero element, and each column may have at least one non-zero element. | 05-12-2011 |
20110128930 | Method for Link Adaptation with a Signal Quality Margin on the Bandwidth - Method and arrangement in a base station for selecting a transmission parameter. The selected transmission parameter is used when sending a signal over a radio channel to a user equipment in a wireless communication network. The radio channel is allocated bandwidth for signalling. The method comprises the step of obtaining an estimation of the signal quality of the radio channel. Also, the allocation to the radio channel. Further yet, the method may comprise the step of calculating a signal quality margin, which signal quality margin is based on the bandwidth size. Still further, the method comprises the step of selecting the transmission parameter based on the estimated signal quality of the radio channel and the calculated signal quality margin. | 06-02-2011 |
20110145672 | 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 ( | 06-16-2011 |
20110185249 | Spatial Multiplexing Communication System With Enhanced Codeword Mapping With Flexible Rate Selection On Each Spatial Layer And With Single HARQ Process - A method of data transmission includes encoding an information block according to a predetermined retransmission protocol to generate, for a single hybrid automatic repeat request (HARQ) instance, a transport block having information bits and error detection bits and channel coding different parts of said transport block using different modulation and coding schemes to generate one or more codewords for transmission to a receiving station. | 07-28-2011 |
20110228758 | METHOD AND A TRANSMITTER IN A WIRELESS COMMUNICATION NETWORK - The object of the present invention is to achieve a solution for handling the increased PAPR that is introduced by the FD and/or TD multi-antenna processing. This is achieved by isolating the PAPR increase to one, or a few antennas, that are matched with more powerful PAs, whereas the remaining antennas may use simpler/smaller PAs amplifying signals with smaller PAPRs. | 09-22-2011 |
20110310932 | SYSTEM AND METHOD OF SINGLE-CARRIER LAYER SHIFTING FOR MULTIPLE-STREAM TRANSMISSION FACILITATING SIC IMPLEMENTATION - A system, method and node of single-carrier layer shifting for multiple-stream transmission in a network. Per-symbol layer shifting for multiple-stream transmission is implemented using DFTS-OFDM as an access technique. Code word-to-layer mapping is fixed within a DFTS-OFDM symbol and only shifted across consecutive DFTS-OFDM symbols. The method begins by receiving a multiple-stream transmission by a mapping module for transmission. The transmission includes a plurality of subframes and information carrying symbols transmitted on a plurality of layers. A per-symbol layer shifting scheme is then implemented on the transmission where layer shifting is conducted upon each symbol. | 12-22-2011 |
20120176981 | SIGNALLING OF REFERENCE SIGNALS FOR SINGLE USER SPATIAL MULTIPLEXING TRANSMISSION SCHEMES - The present disclosure relates to signalling of reference signals for Multi Input Multi Output (MIMO) transmission schemes. A method embodiment for generating reference signals for use between a mobile terminal | 07-12-2012 |
20120177139 | DATA RESOURCE MAPPING FOR FREQUENCY-CODED SYMBOLS - A device and method for communicating frequency-coded symbols that include data elements and reference symbols are disclosed. In one aspect, a carrier frequency band includes a plurality of subcarrier frequency bands. Data elements are transmitted and received on respective pairs of adjacent subcarrier frequency bands to provide diversity. Reference symbols are transmitted and received on predetermined subcarrier frequency bands. Muting is applied to selected subcarrier frequency bands based on the number and frequency configuration of the reference symbols. | 07-12-2012 |
20120309405 | INDEPENDENT CONFIGURATION IDENTITIES IN A HETEROGENEOUS CELLULAR COMMUNICATION NETWORK - Systems and methods are disclosed for using multiple configuration groups having corresponding configuration identity (CID) parameters to configure a transmission channel and a reception channel for a user equipment device in a cellular communication network. In one embodiment, a user equipment device in a cellular communication network obtains CID values for CID parameters for a number of configuration groups. Each of the configuration groups includes one or more transmission channel or reception channel parameters. For each of the configuration groups, the user equipment device configures the parameters in the configuration group based on the CID value obtained for the CID parameter for the configuration group. In this manner, the transmission channel and the reception channel for the user equipment device are configured based on multiple CID values rather than a single physical layer cell identifier for a cell in which the user equipment device is located. | 12-06-2012 |
20130010587 | Methods and Arrangements in a Telecommunication System - The present invention relates to a method and arrangement for controlling re-transmission in a user equipment supporting uplink spatial multiplexing. The method comprises the steps of
| 01-10-2013 |
20130028109 | Point-Dependent Resource Symbol Configuration in a Wireless Cell - A high-power point and one or more low-power points transmit signals associated with the same cell-identifier in a heterogeneous cell deployment. Coverage areas corresponding to the low-power points fall at least partly within the coverage area for the high-power point, so that mobile stations within range of a low-power point are also within range of the high-power point. Channel-state-information reference symbols, CSI-RS, are transmitted using different CSI-RS resources on different transmission points within the cell, while configuration of CSI-RS measurement resources is conducted on a UE-specific basis. The choice of measurement resources to be used is determined by the network, based on the properties of the channels from the transmission points to the UE. As the UE moves around within the cell, the network tracks the channel properties and reconfigures the CSI-RS resources measured by the UE, to correspond to the resource of the closest transmission point or points. | 01-31-2013 |
20130028343 | 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 precoding matrix, and transmitting the precoded at least one symbol stream over a wireless channel to the second node. | 01-31-2013 |
20130040675 | CLOSED LOOP POWER CONTROL IN A HETEROGENEOUS NETWORK BY SELECTING AMONG SETS OF ACCUMULATIVE POWER STEP VALUES - A method is provided in a wireless device for controlling output transmission power from the wireless device. A set is selected among a plurality of sets of power step values, which reside in a memory of the wireless device, responsive to criteria defined in the wireless device. A power control command is received from a radio network node. One of the power step values of the selected set is selected responsive to the power control command. The output transmission power from the wireless device is controlled responsive to the selected power step value. Related methods in radio network nodes and apparatuses are disclosed. | 02-14-2013 |
20130064122 | LINK QUALITY ESTIMATION AND APPARATUS IN A TELECOMMUNICATION SYSTEM - Method and apparatus for enabling accurate link quality estimation of a wireless link between a sending node and a receiving node. When the sending node receives link state reports from the receiving node, it estimates the current state of the wireless link. The sending node also determines a measurement adjusting parameter if the link state reports are deemed inaccurate in relation to the estimated link state, based on a deviation between the received link state reports and the estimated actual link state. The sending node then sends the determined measurement adjusting parameter to the receiving node, and the receiving node provides a link state report based on signal measurements adjusted by the measurement adjusting parameter. The adjusted link state report can then be used for link adaptation of the wireless link and/or for packet scheduling decisions. | 03-14-2013 |
20130114522 | Network Node, User Equipment and Methods Therein - A method in a user equipment device for estimating a channel upon receiving an enhanced control channel (eCCH) from a network node in a telecommunications system includes distributing the eCCH over multiple resource pairs, where each of the multiple resource block pairs includes a number of resources. Each of the resources is associated with a respective antenna port. The user equipment device identifies an antenna port that is associated with multiple ones of the resources. The multiple ones of the resources are present in different resource block pairs of the multiple resource block pairs over which the eCCH is distributed. Identifying the antenna port is based on how the eCCH is mapped to the multiple resource block pairs. The user equipment device estimates the downlink channel for the eCCH based on the identified antenna port in the multiple ones of the resources in the multiple resource block pairs. | 05-09-2013 |
20130201840 | METHODS AND ARRANGEMENTS FOR CHANNEL ESTIMATION - Some embodiments provide a method for channel estimation in a wireless device. According to the method, the wireless device obtains an indication that a set of antenna ports, or antenna port types, share at least one channel property. The wireless device then estimates one or more of the shared channel properties based at least on a first reference signal received from a first antenna port included in the set, or having a type corresponding to one of the types in the set. Furthermore, the wireless device performs channel estimation based on a second reference signal received from a second antenna port included in the set, or having a type corresponding to one of the types in the set, wherein the channel estimation is performed using at least the estimated channel properties. | 08-08-2013 |
20130242949 | Antenna Port Mapping for Demodulation Reference Signals - The present invention provides a unified, rank independent mapping between antenna ports and group/code pairs. Each antenna port is uniquely associated with one code division multiplexing (CDM) group and one orthogonal cover code (OCC). The mapping between antenna ports and group/code pairs is chosen such that, for a given antenna port, the CDM group and OCC will be the same for every transmission rank. | 09-19-2013 |
20130272351 | Parameterized Codebook with Subset Restrictions for Use With Precoding MIMO Transmissions - One aspect of the teachings herein relates to signaling codebook restrictions, to restrict the precoder recommendations being fed back from a remote transceiver, so that precoder selections made by the remote receiver are restricted to permitted subsets of overall precoders within a defined set of overall precoders, or to permitted subsets within larger sets of conversion precoders and tuning precoders, for the case where the overall precoders are represented in factorized form by conversion and tuning precoders. As a non-limiting example, these teachings advantageously provide for precoder restrictions in LTE or LTE-Advanced networks, where ongoing development targets the use of larger, richer sets of precoders, and where the disclosed mechanisms for determining, signaling, and responding to subset restrictions provide significant operational advantages. | 10-17-2013 |
20140036846 | Method and Arrangement for Adapting Power of Reference Signals - A method and an arrangement in a radio network node for adapting transmission power of resource elements for demodulation reference signals, referred to as “reference elements” are provided. The radio network node is configured for multiple-input multiple-output transmission, referred to as “MIMO transmission”, to a user equipment. The MIMO transmission comprises at least three layers. Two consecutive subcarriers of a resource block carry at least three reference elements. A first subcarrier of the resource block carries data elements. The radio network node adapts transmission power of said at least three reference elements such that an average transmission power, over said two consecutive subcarriers, of said at least three reference elements is equal to a transmission power, for the first subcarrier, of the data elements for said at least three layers. The radio network node uses the adapted transmission power to transmit, to the user equipment, said at least three reference elements. | 02-06-2014 |
20140044211 | PRECODER STRUCTURE FOR MIMO PRECODING - The teachings herein present a method and apparatus that implement and use a factorized precoder structure that is advantageous in terms of performance and efficiency. In particular, the teachings presented herein disclose an underlying precoder structure that allows for full PA utilization. According to this structure, an overall precoder is constructed from a conversion precoder and a tuning precoder. The conversion precoder comprises a block diagonal matrix and has 2┌k/2┐ columns, where k is a non-negative integer. Each tuning precoder has the following properties: all non-zero elements are constant modulus; every column has exactly two non-zero elements; and every row has exactly two non-zero elements; two columns either have non-zero elements in the same two rows or do not have any non-zero elements in the same rows; and two columns having non-zero elements in the same two rows are orthogonal to each other. If row m in a tuning precoder column has a non-zero element, so does row m+┌k/2┐. | 02-13-2014 |
20140056382 | METHOD AND APPARATUS FOR USING FACTORIZED PRECODING - According to one or more aspects, the teachings herein improve user equipment (UE) Channel State Information (CSI) feedback, by letting the precoder part of a CSI feedback report comprise factorized precoder feedback. In one or more such embodiments, the factorized precoder feedback corresponds to at least two precoder matrices, including a recommended “conversion” precoder matrix and a recommended “tuning” precoder matrix. The recommended conversion precoder matrix restricts the number of channel dimensions considered by the recommended tuning precoder matrix and, in turn, the recommended tuning precoder matrix matches the recommended precoder matrix to an effective channel that is defined in part by said recommended conversion precoder matrix. | 02-27-2014 |
20140064342 | Methods and Apparatus in a MIMO Telecommunications System - The present invention provides methods and apparatus for transmitting and receiving over a MIMO radio link. In particular, a precoding matrix is applied to transmitted signals and constrained in such a way so as to limit the additional peak to average power ratio (PAPR) caused by applying the precoding matrix. For example, each row of the precoding matrix may have a single non-zero element, and/or each column may have the same number of non-zero elements. | 03-06-2014 |
20140153425 | Neighbour Cell Quality Measurement in a Telecommunications System - The present invention relates to methods and arrangements for neighbour cell quality measurements using silent resource element (RE) grids, and as well to a silent RE grid. | 06-05-2014 |
20140169493 | Parameterized Codebook with Subset Restrictions for Use With Precoding MIMO Transmissions - One aspect of the teachings herein relates to signaling codebook restrictions, to restrict the precoder recommendations being fed back from a remote transceiver, so that precoder selections made by the remote receiver are restricted to permitted subsets of overall precoders within a defined set of overall precoders, or to permitted subsets within larger sets of conversion precoders and tuning precoders, for the case where the overall precoders are represented in factorized form by conversion and tuning precoders. As a non-limiting example, these teachings advantageously provide for precoder restrictions in LTE or LTE-Advanced networks, where ongoing development targets the use of larger, richer sets of precoders, and where the disclosed mechanisms for determining, signaling, and responding to subset restrictions provide significant operational advantages. | 06-19-2014 |
20140177552 | DATA RESOURCE MAPPING FOR FREQUENCY-CODED SYMBOLS - A device and method for communicating frequency-coded symbols that include data elements and reference symbols are disclosed. In one aspect, a carrier frequency band includes a plurality of subcarrier frequency bands. Data elements are transmitted and received on respective pairs of adjacent subcarrier frequency bands to provide diversity. Reference symbols are transmitted and received on predetermined subcarrier frequency bands. Muting is applied to selected subcarrier frequency bands based on the number and frequency configuration of the reference symbols. | 06-26-2014 |
20140219214 | 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 user data codewords to be transmitted during a subframe and calculating a number of control vector symbols to allocate to control information during the subframe. The number of control vector symbols is calculated based on the number of bits in the user data codewords to be transmitted during the subframe and an estimate of the number of vector symbols onto which the user data codewords will be mapped. The estimate of the number of vector symbols depends on the number of control vector symbols to be allocated to control information. The control codewords may be mapped 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. | 08-07-2014 |
20140362937 | System and Method for Allocating Transmission Resources - Methods for wirelessly transmitting user data and control information using a plurality of transmission layers include encoding bits of control information to form control codewords and encoding bits of user data to form user data codewords. The method also includes generating a plurality of vector symbols based on the control codewords and the user data codewords. Each vector symbol includes a plurality of modulation symbols that are each associated with a transmission layer over which the associated modulation symbol will be transmitted. Generating the plurality of vector symbols includes interleaving bits of the control codewords and bits of the user data codewords so that the control information is carried in modulation symbols associated with the same transmission layers in the vector symbols transmitted during the subframe that carry the control information. The method also includes transmitting the plurality of vector symbols to a receiver over a plurality of transmission layers. | 12-11-2014 |
20150049717 | Method and Arrangement in a Telecommunication System - A method and an arrangement ( | 02-19-2015 |