Patent application number | Description | Published |
20100173640 | Single User Multiple Input Multiple Output User Equipment - In accordance with the exemplary embodiments of the invention there is at least a method, apparatus, and a computer program to perform operations including receiving information descriptive of a type of radio access which a user equipment is acting on, and in response to receiving the information descriptive of a particular type of radio access, transmitting from a multiple transmit antenna user equipment so that the transmission appears, at a receiver, to have been made by a single antenna user equipment, or by a user equipment that supports antenna switching/selection. | 07-08-2010 |
20100202311 | METHOD AND APPARATUS FOR PROVIDING CHANNEL STATE REPORTING - An approach is provided for optimizing the timing scheme for channel state reporting. A platform determines an offset value for each of a plurality of user equipment. The offset value relates to timing between a channel state measurement point and a corresponding point for reporting of the channel state measurement. The platform further initiates signaling of the offset values to the respective user equipment. | 08-12-2010 |
20110038344 | APPARATUS AND METHOD FOR INITIALIZATION AND MAPPING OF REFERENCE SIGNALS IN A COMMUNICATION SYSTEM - An apparatus and method for initialization and mapping of reference signals in a communication system. In one embodiment, the apparatus includes a processor and memory including computer program code. The memory and the computer program code are configured to, with the processor, cause the apparatus to generate a reference signal employable with a plurality of physical resource blocks corresponding to a bandwidth of a communication system, and allocate resource elements of an assigned physical resource block from the plurality of physical resource blocks to a user equipment. The memory and the computer program code are further configured to, with the processor, cause the apparatus to generate a dedicated reference signal for the user equipment by allocating elements of the reference signal in accordance with allocated resource elements of the assigned physical resource block. | 02-17-2011 |
20110243098 | CODEBOOK SUBSET RESTRICTION BASED ON CODEBOOK GROUPING - A method and apparatus are provided for an apparatus. The apparatus includes at least one memory including computer program code, and at least one processor. The at least one memory and the computer program code are configured to, with the at least one processor, cause the apparatus at least to receive an indication of a set of codeword groups to be included in a codebook, and to select a precoding matrix index based on the indicated set of codeword groups in the codebook. The apparatus is also cause to transmit the precoding matrix index to a network node. | 10-06-2011 |
20120026964 | SYSTEM AND METHOD FOR SIGNALING OF INTERFERING SPATIAL LAYERS WITH DEDICATED REFERENCE SIGNAL - An apparatus, method and system for signaling of interfering spatial layers with dedicated reference signals in a communication system. In one embodiment, an apparatus includes a processor ( | 02-02-2012 |
20120082042 | CHANNEL STATE INFORMATION FEEDBACK FOR ENHANCED DOWNLINK MULTIPLE INPUT - MULTIPLE OUTPUT OPERATION - In accordance with the exemplary embodiments of the invention there is deriving multiple input-multiple output feedback information using a set of precoding matrices associated with at least one precoding codebook, signaling, in a first plurality of resource elements, channel state information associated with a first precoding matrix indicator of the set of precoding matrices jointly with a transmission rank, and signaling separately, in a second plurality of resource elements, channel state information associated with a second precoding matrix indicator of the set of precoding matrices. In addition, there is receiving signaling in a first plurality of resource elements of channel state information associated with a first precoding matrix indicator of a set of precoding matrices jointly with a transmission rank, receiving signaling separately in a second plurality of resource elements of channel state information associated with a second precoding matrix indicator of the set of precoding matrices, and controlling a downlink multiple input-multiple output transmission in accordance with the received signaling. | 04-05-2012 |
20120113794 | MULTIPLE USER MIMO INTERFERENCE SUPPRESSION COMMUNICATIONS SYSTEM AND METHODS - Systems and methods for providing an efficient mechanism for transmitting interference vectors to communications terminals, such as user equipments (UEs), in an over the air radio telecommunications network with spatially multiplexed multiple user multiple input multiple output (MU-MIMO) capability. A new pre-coding information downlink channel is defined. Messages containing semi-persistent interference vector information for MU-MIMO user equipment are defined and transmitted over the new channel in a manner that allows infrequent transmission and efficient use of resources. Using the interference vectors and applying inter-user interference adaptation to received messages, the UEs may receive spatially multiplexed MIMO transmissions and actively remove inter-user interference after reception of the messages. Compression of the pre-coding vector information transmitted over the pre-coding information channel may result in additional increases in efficiency in the system. | 05-10-2012 |
20130010880 | Feedback Framework for MIMO Operation in Heterogeneous Communication Network - There is provided a mechanism providing a flexible feedback framework operating in different scenarios, such as heterogeneous network deployments. Antenna information are sent from a scheduler element to a UE, the antenna information including information indicating a grouping of one or more antenna in closely spaced antenna groups of one or more transmit points. The UE selects at least one of precoding codewords and amplitude weight parameters for each closely spaced antenna group, and determines information related to a sub-band precoder and a transmit point related combiner. The processing results are indicated to the scheduler by means of sending indices related to a wide-band long-term precoder and a sub-band short-term precoder. The scheduler processes these results for determining a joint precoder. | 01-10-2013 |
20130017793 | AUTOMATIC GAIN CONTROL CONFIGURATIONAANM Henttonen; TeroAACI EspooAACO FIAAGP Henttonen; Tero Espoo FIAANM Roman; TimoAACI EspooAACO FIAAGP Roman; Timo Espoo FIAANM Callender; ChrisAACI HampshireAACO GBAAGP Callender; Chris Hampshire GBAANM Nielsen; Anders OstergaardAACI FrederiksbergAACO DKAAGP Nielsen; Anders Ostergaard Frederiksberg DKAANM Jansen; KajAACI SaloAACO FIAAGP Jansen; Kaj Salo FI - The invention teaches a solution, for example, for Long Term Evolution (LTE) networks. The solution comprises determining a measurement pattern for at least one automatic gain control tracking loop when resource restrictions have been configured for a user equipment, the resource restrictions comprising at least one measurement restriction pattern, wherein each automatic gain control tracking loop is associated with at least one measurement restriction pattern; and performing automatic gain control measurements according to the measurement patterns of the at least one automatic gain control tracking loop. | 01-17-2013 |
20130058285 | SPATIAL HASHING FOR ENHANCED CONTROL CHANNEL SEARCH SPACES - The present invention provides a method, apparatus and a computer program product for spatial hashing for enhanced control channel search spaces. The present invention includes defining a control channel search space for searching for control channel candidates, defining search space locations within the search space, grouping the search space locations into a plurality of subsets of search space locations, associating each subset of search space locations with an antenna port, for each of a plurality of subframes, changing the search space locations from a first subset of search space locations to a second subset of search space locations. | 03-07-2013 |
20130058424 | Codebook Design and Structure for Multi-Granular Feedback - A first precoding matrix W | 03-07-2013 |
20130064129 | Apparatus, Method and Computer Program Product for Selecting Beam Group and Subset of Beams in Communication System - An apparatus and method for selecting a beam group and a subset of beams in a communication system are disclosed. The method includes: measuring channel state information (CSI) on a downlink from a base station ( | 03-14-2013 |
20130077707 | METHOD AND APPARATUS FOR MULITPLE INPUT MULTIPLE OUTPUT DISTRIBUTED ANTENNA ARRAYS - A method, apparatus and computer program product are provided for reporting low rank feedback information for each transmission point up to a maximum rank per transmission point. In this regard, a method includes determining a transmission rank and a precoding matrix for each of at least two transmission points of a plurality of transmission points. A method also includes determining a joint transmission rank based on at least two of the plurality of transmission points. A method also includes selecting a joint transmission precoding matrix based on the determined precoding matrix for each of the at least two transmission points and the determined joint transmission rank. The method further includes causing channel state information “CSI” to be transmitted to an access point, wherein the CSI describes the selected joint transmission precoding matrix. | 03-28-2013 |
20130195047 | METHOD AND APPARATUS IMPLEMENTING CHANNEL QUALITY CONTROL - Methods for devices, devices and computer program products for devices relate to a communication module, arranged for packet based communication, and including a receiving module. The receiving module is arranged to receive a control message, wherein the control message includes a plurality of acknowledgement information items, wherein each of the plurality of acknowledgement information items are located in a preset portion of the control message, respectively. The device further includes a determination module, arranged to determine whether the received control message is intended for the device, a selection module, arranged to select, responsive to an affirmative determination result, at least one of the plurality of acknowledgement information items based on the preset portions, and an obtaining module, arranged to obtain control data contained in the selected at least one of the plurality of acknowledgement information items. | 08-01-2013 |
20130195051 | METHOD AND APPARATUS FOR PROVIDING ENHANCED INTERFERENCE SUPPRESSION - A method is provided that includes allocating a first subset of resource elements (REs) of a physical resource block (PRB) to a mobile terminal and associating one or more first demodulation reference symbols (DM-RS) ports therewith. The first subset of REs and the one or more first DM-RS ports have common interference characteristics, thereby providing for enhanced interference suppression. The method also includes causing transmission of the PRB for reception by the mobile terminal. Corresponding apparatus and computer program products are also provided. | 08-01-2013 |
20130244676 | METHODS, APPARATUS AND COMPUTER PROGRAMS FOR CONFIGURING USER EQUIPMENT - Examples are described relating to methods, apparatus and computer programs for configuring a user equipment in a cellular wireless network. Certain exemplary methods involve receiving ( | 09-19-2013 |