Patent application number | Description | Published |
20110293037 | METHOD FOR TRANSMITTING REFERENCE SIGNALS - A method and apparatus for transmitting reference signals in a wireless communication system is disclosed. The method and apparatus includes reference signal, RS, transmission in resource blocks supporting multiple antenna port transmission, at least one broadcast channel being provided in resource blocks belonging to a first set of resource blocks, a first number of reference signals being transmitted in at least one resource block supporting multiple antenna port transmission and a second number of reference signals being transmitted in at least one resource block belonging to a second set of resource blocks. Preferably, different resource elements, REs, are used for each reference signal in resource blocks. An example embodiment of reference signal support of, e.g., eight antenna ports is provided. | 12-01-2011 |
20120034928 | METHOD IN A WIRELESS COMMUNICATION SYSTEM - A method in a Central Node (CN), a method in a Remote Node (RN), and a method in a wireless communication system for allocating reference signals to be used for uplink transmission are disclosed. According to one aspect reference signals are allocated with a method comprising the steps of: determining in a CN a number of reference signals N to be used for uplink transmission by a Remote Node RN; indicating to the RN the number of reference signals N to be used for uplink transmission by the RN; configuring an uplink transmission by the RN with at most the number of reference signals N; and performing by the RN the uplink transmission with at most the number of reference signals N on transmit antennas comprised in the RN. The present disclosure further discloses a CN and a RN relating to the methods. | 02-09-2012 |
20120039409 | POSITIONING REFERENCE SIGNALS - An improved generation and use of Positioning Reference Signals (PRS) generates PRS to be used in a wireless Orthogonal Frequency Division Multiplexing (OFDM) communication system. A time-frequency pattern of Resource Elements (REs) is determined and used for transmitting the PRS, wherein the time-frequency pattern includes at least two OFDM symbols. Each one of the at least two OFDM symbols is assigned a value to each one of a number of the REs being within that OFDM symbol. The values being assigned to the number of REs correspond to elements in a modulation sequence having a length being equal to the number of REs, and are to be used for modulating OFDM subcarriers corresponding to the REs within that OFDM symbol. | 02-16-2012 |
20120046047 | POSITIONING REFERENCE SIGNALS - An improved generation and use of Positioning Reference Signals (PRS) generates a PRS to be used in a wireless Orthogonal Frequency Division Multiplexing (OFDM) communication system. A time-frequency pattern of Resource Elements (REs) is determined and used for transmitting the PRS, wherein the time-frequency pattern includes at least two OFDM symbols. Each one of the at least two OFDM symbols is assigned a value to each one of a number of the REs being within that OFDM symbol. The values being assigned to the number of REs correspond to elements in a modulation sequence having a length being equal to the number of REs, and are to be used for modulating OFDM subcarriers corresponding to the REs within that OFDM symbol. | 02-23-2012 |
20120287863 | Method and System for Synchronization in Communication System - A method can be used for facilitating an uplink synchronization between a first transceiver and a second transceiver within a cell in a multi-user cellular communication system. The first transceiver receives a reference from the second transceiver and generates a set of signature sequences based on the reference. The first transceiver selects a first signature sequence from the set of signature sequences and incorporates the first signature sequence into a signal. The first transceiver transmits the signal to the second transceiver. The signal is used for a uplink synchronization between the first transceiver and the second transceiver. The set of signature sequences are generated from sequences with zero-correlation zone. | 11-15-2012 |
20120287898 | Method and System for Synchronization in Communication System - A method can be used for facilitating uplink synchronization between a first transceiver and a second transceiver within a cell in a multi-user cellular communication system. The first transceiver receives a signal for the uplink synchronization from the second transceiver. The signal includes a first signature sequence generated, at least in part, from a sequence with a zero-correlation zone. The first transceiver then performs a correlation of the signal for detection of the first signature sequence. | 11-15-2012 |
20130279469 | Method and System for Allocating Communication Resources - A method of allocating communication resources for a communication between a transmitter and a receiver in a communication system, the communication resources being divided in time periods and frequency sub-bands. The transmitter receives a channel quality measurement sent by the receiver. The transmitter performs allocation of a first part of the communication resources to the receiver according to the channel quality measurement if allocation of the first part is selected, or allocation of a second part of the communication resources to the receiver if allocation of the first part is not selected. The transmitter informs the receiver of allocated communication resources, and the allocated communication resources being designated for frequency localized channels or for frequency distributed channels. | 10-24-2013 |
20140029695 | Method and Apparatus for Open Loop Transmission in a Multiple Antenna Wireless Communication System - The invention concerns a method for precoding in an open loop transmission communications system, wherein the method includes precoding data at each of M REs with a precoding matrix, precoding each of DM-RSs with one column of a precoding matrix which is same as that used for precoding M data REs. The method is distinguished by using at least L≧2 different precoding matrices from a set of precoding matrices W to precode the M REs and the E allocated REs such that REs precoded with a first precoding matrix are interleaved with REs precoded with at least one additional, different precoding matrix and the number of used precoding matrices L is adapted to the transmission rank r and number N of available DM-RS. The invention further concerns a radio transmitter and a user equipment. | 01-30-2014 |
20140050076 | METHOD FOR GENERATING A SUPERSET OF QUASI-ORTHOGONAL SETS OF SEQUENCES - Generate a first set S comprising a plurality of quasi-orthogonal sets of sequences; generate L number of second sets of quasi-orthogonal sets of sequences T | 02-20-2014 |
20140080497 | METHOD IN A WIRELESS COMMUNICATION SYSTEM - A method in a Central Node (CN), a method in a Remote Node (RN), and a method in a wireless communication system for allocating reference signals to be used for uplink transmission are disclosed. According to one aspect reference signals are allocated with a method comprising the steps of: determining in a CN a number of reference signals N to be used for uplink transmission by a Remote Node RN; indicating to the RN the number of reference signals N to be used for uplink transmission by the RN; configuring an uplink transmission by the RN with at most the number of reference signals N; and performing by the RN the uplink transmission with at most the number of reference signals Non transmit antennas comprised in the RN. The present disclosure further discloses a CN and a RN relating to the methods. | 03-20-2014 |
20140112303 | METHOD FOR ARRANGING TRANSMISSIONS ON A DOWNLINK CARRIER - A method is provided for arranging transmissions on a downlink carrier c, spanning a frequency range Fc, in a mobile radio communications system, wherein a bandwidth of Fc belongs to a set of predefined channel bandwidths in the communications system, and wherein the carrier c comprises a reference signal defined in the communications system. A configurable frequency range FRS comprising a set of time-frequency resources for comprising the reference signal of the carrier c is provided. Information associated with the configuration of said frequency range FRS is signaled to a receiver in the communications system, such that c can be deployed over a frequency range F smaller than Fc when the frequency range FRS is configured within F and any other transmissions on the carrier c are arranged to be within F. | 04-24-2014 |
20140126436 | TRANSMISSION OF CHANNEL STATE INFORMATION IN A WIRELESS COMMUNICATION SYSTEM - A wireless communication system includes at least one transmit node having at least two transmit antenna ports, and at least one receive node having at least one receive antenna port. User information is transmitted between the at least two transmit antenna ports and the at least one receive antenna port on a radio propagation channel. A reconstructed channel state information (R-CSI) for a reconstructed radio propagation channel is computed. The reconstructed radio propagation channel is obtained as an estimated radio propagation channel compensated by a function of an estimated signal power imbalance between the at least two transmit antenna ports. And an indicative of the estimated signal power imbalance and the R-CSI is sent to the at least one transmit node. | 05-08-2014 |
20140192770 | Methods and Nodes in a Wireless Communication System - Methods and nodes, for communication of a receiver-specific control channel signal within a wireless communication system, to be received by a receiver, wherein receiver-specific downlink control channel signals are scheduled for transmission over sets of Physical Resource Block pairs. | 07-10-2014 |
20140211752 | GENERATING SYNCHRONIZATION SIGNALS FOR WIRELESS COMMUNICATION SYSTEMS - The present disclosure relates to a method for facilitating synchronization in a wireless communication system. A number sequence of length L is defined. The number sequence is mapped on a first set of discrete Fourier frequency coefficients. A second set of discrete Fourier frequency coefficients is generated by frequency shifting the first set of discrete Fourier frequency coefficients. The second set of discrete Fourier frequency coefficients is transformed into a time domain signal. | 07-31-2014 |
20140241313 | TRANSMITTING CONSTELLATION SYMBOLS IN A COMMUNICATION SYSTEM - A method is provided for transmitting constellation symbols in a communication system. A set of orthogonal time-frequency mapping patterns (TFPs) is generated from a TFP. And a TFP from the set of orthogonal TFPs is selected for transmitting a block of constellation symbols. | 08-28-2014 |
20140321421 | GENERATING AND TRANSMITTING DEMODULATION REFERENCE SIGNALS - The present disclosure provides a solution which solves the problem of demodulation reference signal (DMRS) ambiguity by introducing separate, i.e. different DMRSs. This is especially the case for systems employing dynamic allocation of control and data signals to different PRBs. | 10-30-2014 |
20140334527 | METHOD AND SYSTEM FOR ALLOCATING COMMUNICATION RESOURCES - The present invention relates to a method for allocating communication resources in a multi-user cellular communication system, wherein communication resources are divided in time periods and frequency sub-bands, wherein part of the communication resources are used for frequency-localized communication channels, and part of the communication resources are used for frequency distributed channels The method further comprises the steps of: classifying part of the frequency sub-bands as frequency sub-bands carrying frequency-distributed channels, classifying the remaining part of the frequency sub-bands as frequency sub-bands carrying frequency-localized channels. The present invention also relates to a system, a transmitter and a communication system. | 11-13-2014 |
20140342768 | POWER CONTROL IN A WIRELESS COMMUNICATION SYSTEM - The present invention relates to a method for power control in a wireless communication system comprising at least one mobile station and N number of coordinated reception points with indices n=1, . . . , N, said coordinated reception points being spatially separated and adapted for receiving transmissions from said mobile station, said method comprising the steps of: estimating a propagation loss metric L | 11-20-2014 |
20140376505 | Method, Apparatus and System for Random Access - A method can be used for facilitating a random access procedure between a first transceiver and a second transceiver within a cell. The first transceiver selects a signature sequence from a set of signature sequences, incorporates the signature sequence into a signal, and transmits the signal to the second transceiver. The set of signature sequences being obtained from a Zadoff-Chu sequence with zero correlation zone. | 12-25-2014 |
20150023311 | APPARATUS, SYSTEM, AND METHOD FOR SIGNALLING A QUANTITY OF ANTENNA PORTS IN A WIRELESS COMMUNICATION SYSTEM - A quantity of antenna ports of a transmitting apparatus is signalled in a wireless communication system. The quantity of antenna ports of the transmitting apparatus is encoded into a first type information and a second type information. The first type information is transmitted on a physical broadcast channel (PBCH); and the second type information is transmitted on a physical downlink shared channel (PDSCH). The PDSCH is transmitted on at least one antenna port indicated by the first type information. | 01-22-2015 |
20150063286 | METHOD FOR TRANSMISSION OF CONTROL CHANNEL SIGNALS - The present invention relates to a method in a network control node for transmission of control channel signals in a wireless communication system, the wireless communication system employing scheduling of physical resource blocks (PRBs) used for each new transmission of a control channel signal, wherein each control channel signal is related to one or more control channel elements (CCEs); the method comprising the steps of: removing user specific reference signals in associated physical resource blocks (PRBs) if the associated physical resource blocks (PRBs) comprises at least one control channel signal; inserting control channel signals in the associated physical resource blocks (PRBs); and transmitting the associated physical resource blocks (PRBs). Furthermore, the invention also relates to a computer program, a computer program product, and a network control node device thereof. | 03-05-2015 |