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Multiple Input Multiple Output patents

      

This page is updated frequently with new Multiple Input Multiple Output-related patent applications.




new patent Wideband antenna star array
This invention provides a wideband switchable, reconfigurable and steerable antenna star array capable of providing full 360 degree coverage and selectable narrower beam coverage with high isolation across the full cellular and bandwidth. This invention enables the small cell to have increased data throughput capacity because of the availability the wider band through a single aperture.
Smart Antenna Systems, Inc.


Uplink multi-user multiple input multiple output beamforming
A first communication device receives respective beamforming training packets as part of a procedure for developing respective transmit beamforming matrices for use by a plurality of second communication devices during a subsequent ul mu transmission. The first communication device generates respective beamforming feedback information based on reception of the respective beamforming training packets, and transmits the respective beamforming feedback information to the plurality of second communication devices.
Marvell World Trade Ltd.


Systems and methods for frequency multiplexing mu-mimo
Generally discussed herein are systems and apparatuses that may include frequency multiplexing in a downlink (dl) multi-user (mu) multiple input multiple output (mimo) transmission. The disclosure also includes techniques of making and using the systems and apparatuses.
Intel Ip Corporation


Methods and systems for scheduling a virtual mimo communication environment
A system and method for scheduling cooperative uplink transmissions in a virtual multiple input multiple output (mimo) wireless communication environment are provided. More specifically, both random and channel aware orthogonal scheduling techniques for identifying a sub-set of n mobile terminals to provide cooperative uplink transmissions for each transmit time interval are provided..
Blackberry Limited


Beam selection method and apparatus and communication system
Embodiments of the present disclosure provide a beam selection method and apparatus and a communication system. The method includes: a base station configures user equipment (ue) with measure resources, each measure resource corresponding to one beam: and selects a beam used for performing 3-dimensional multiple input multiple output (3d mimo) transmission according to a measurement result reported by the ue.
Fujitsu Limited


Multi-beamforming training
A method and apparatus for performing a beamforming training for a multiple input multiple output (mimo) operation in a wireless local area network is provided. The apparatus assigns at least one of a plurality of sector groups with respect to each of a plurality of array antennas.
Lg Electronics Inc.


Codebook for full-dimension multiple input multiple output communications
Various embodiments include an apparatus to be employed by an enhanced node b (enb), the apparatus comprising communication circuitry to receive, from a user equipment (ue), feedback information and control circuitry, coupled with the communication circuitry, to identify a codeword from a three-dimensional codebook based on the feedback information received from the ue, wherein the communication circuitry is further to precode data to be transmitted to the ue based on the codeword. An apparatus to be employed by a ue and additional methods are described..
Intel Ip Corporation


Method and transmitting control information in wlan system
A method and a radio apparatus for signal transmission in a wireless local area network (wlan) system are discussed. The method according to an embodiment includes generating first and second very high throughput (vht) fields including first and second control information, respectively; and transmitting a physical layer protocol data unit (ppdu) including the first and second vht fields to at least one target station.
Lg Electronics Inc.


Pre-coding system and method based on interference alignment
Provided is a method for interference alignment applied to a multi-cell and multi-user multiple input multiple output (mimo) system. The method includes that: a bs divides multiple users in a cell into a plurality of user groups, and notifies the multiple users of grouping information; and when one of the plurality of user groups is interfered by a neighbor cell, users in the one of the plurality of user groups cooperate with each other to perform interference alignment.
Zte Corporation


Communication method using multiple input multiple output and communication apparatus performing the same
Provided herein is a communication method using mimo (multiple-input multiple-output) technology for communicating with a terminal included in each of a plurality of base station cells using a communication apparatus, the method including calculating, by the communication apparatus, the number of terminals included inside a base station cell; generating, by the communication apparatus, pilot signals corresponding to the calculated number of terminals; and allocating, by the communication apparatus, the pilot signals to a terminal that may maximize a network capacity based on the generated pilot signals.. .
Electronics And Telecommunications Research Institute


Tone block and spatial stream allocation

A method is described. A block allocation that indicates a plurality of contiguous tone blocks of a wireless local area network communication channel is selected for a multi-user, multiple input multiple output (mu-mimo) orthogonal frequency division multiple access (ofdma) data unit.
Marvell World Trade Ltd.

Pilot time slot hopping

Embodiments are directed to systems, methods and computer program products for pilot time slot hopping to mitigate interference-based pilot time slot contamination. Embodiments include generating a multiple input multiple output (mimo) system message frame structure comprising a header comprising a plurality of header time slots, an uplink (ul) time slot (optional), and a downlink (dl) time slot.
Sony Corporation

Method for antenna array with steerable spotlight beams

Cellular array implementations with multiple steerable spotlight beams irradiated from a common aperture are disclosed herein. Such an approach can easily be adapted to suit various geographical population densities and distributions.
Huawei Technologies Co., Ltd.

Communication method and apparatus using analog and digital hybrid beamforming

A communication method and apparatus using analog and digital hybrid beamforming are provided. The method includes receiving a first message including a measurement and selection condition for hybrid beamforming from a base station (bs), measuring channels of a plurality of bs transmission beams, selecting at least one bs transmission beam based on channel measurements, transmitting report information about the selected at least one bs transmission beam to the bs, receiving from the bs a second message, estimating an effective channel matrix for the selected final bs transmission beam according to the measurement and report condition, determining feedback information for digital beamforming of the bs based on the effective channel matrix, transmitting the determined feedback information to the bs, and receiving a data burst from the bs according to a multiple input multiple output (mimo) mode and/or a configuration scheduled based on the feedback information..
Samsung Electronics Co., Ltd.

Explicit feedback format within single user, multiple user, multiple access, and/or mimo wireless communications

Explicit feedback format within single user, multiple user, multiple access, and/or mimo wireless communications. A beamformer provides a first communication to a beamformee, and based thereon, the beamformee may ascertain certain characteristics associated with the type and format of feedback to be provided to the beamformee via a second communication from the beamformee to the beamformer.
Broadcom Corporation

Apparatus and performing user terminal selection operation and beam forming operation in wireless communication system supporting mimo technology

The present disclosure relates to a pre-5th-generation (5g) or 5g communication system to be provided for supporting higher data rates beyond 4th-generation (4g) communication system such as a long term evolution (lte). A method of transmitting feedback information by a receiving apparatus in a wireless communication system supporting a multiple input multiple output (mimo) scheme is provided.
Korea Advanced Institute Of Science And Technology

Adaptive time diversity and spatial diversity for ofdm

An adaptable orthogonal frequency-division multiplexing system (ofdm) that uses a multiple input multiple output (mimo) to having ofdm signals transmitted either in accordance with time diversity to reducing signal fading or in accordance with spatial diversity to increase the data rate. Sub-carriers are classified for spatial diversity transmission or for time diversity transmission based on the result of a comparison between threshold values and at least one of three criteria.
Apple Inc.

Apparatus for and channel quality prediction through computation of multi-layer channel quality metric

An apparatus and method for a transceiver are provided. The apparatus for the transceiver includes a multiple input multiple output (mimo) antenna; a transceiver connected to the mimo antenna; and a processor configured to measure channel gain hk, based on the received signal, where k is a sample index from 1 to k, hk is an m×n matrix of complex channel gain known to the transceiver, measure noise variance σ2 of a channel, calculate a per-sample channel quality metric q(hk, σ2) using at least one bound of mutual information; reduce a dimension of a channel quality metric vector (q(h1, σ2), .
Samsung Electronics Co., Ltd.

Method and multiple frame transmission for supporting mu-mimo

A method of multi user multiple input multiple output (mimo) communication in a wireless local area network (wlan) system; and a transmitting device therefore are discussed. The method according to an embodiment includes generating an aggregate-medium access control protocol data unit (a-mpdu) including an a-mpdu subframe, the a-mpdu subframe including a medium access control protocol data unit (mpdu) delimiter field; and selecting a type of a guard interval.
Lg Electronics Inc.

Point-to-multipoint microwave communication

A microwave communication system may include subscriber stations in communication with a base station. The stations may include time duplex circuitry normally found in wireless local area networks (wlans).
Skyriver Communications, Inc.

Channel-state-information reference signals for advanced wireless systems

A mobile station includes a receiver configured to receive containing a complex-valued modulation symbol from a base station, a processor configured to extract the complex-valued modulation symbol from the signal, wherein in response to being configured with code-division multiplex-4 (cdm-4), the complex-valued modulation symbol is mapped using a reference signal sequence. A base station includes a processor configured to generate a reference signal sequence for each subcarrier and ofdm symbol, and in response to being configured with code-division multiplex-4 (cdm-4), map a reference signal sequence to the complex-valued modulation symbols.
Samsung Electronics Co., Ltd

Reference signal transmission downlink multiple input multiple output system

A reference signal transmission method in a downlink mimo system is disclosed. The downlink mimo system supports a first ue supporting n transmission antennas among a total of m transmission antennas (where m>n) and a second ue supporting the m transmission antennas.
Lg Electronics Inc.

Channel state information acquisition and feedback for full dimension multiple input multiple output

Various communication systems may benefit from feedback related to communication conditions. For example, certainly wireless communication systems may benefit from channel state information acquisition and feedback, particularly in connection with, for example, full dimension multiple input multiple output.
Nokia Solutions And Networks Oy

Method and apparatus of link adaptation in wireless local area network

A method of link adaptation performed by an access point supporting multi user (mu) multiple input multiple output (mimo) in wireless local area network system is provided. The method includes transmitting, to a first station, a physical layer convergence procedure (plcp) protocol data unit (ppdu) containing a modulation and coding scheme (mcs) request (mrq) and receiving, from the first station, a mcs feedback (mfb) in response to the mrq, wherein the first station is one of destination stations of mu-mimo transmission performed by the access point, and the mfb includes a recommended mcs value computed, by the first station, on the assumption that the first station, as a member of the destination stations, receives data transmitted over at least one spatial stream allocated to the first station in mu-mimo transmission..
Lg Electronics Inc.

Multiple-input multiple-output (mimo) antenna

A multiple input multiple output (mimo) antenna is provided. The mimo antenna may include, but is not limited to, a printed circuit board having a plurality of edges and a ground layer including, but not limited to a plurality of antenna element mounting locations, at least one of the plurality of antenna element mounting locations being arranged on a first side of the printed circuit board and at least one of the plurality of antenna element mounting locations being arranged on a second side of the printed circuit board, a plurality of slots, each of the plurality of slots extending a predetermined distance from an edge of the printed circuit board, and at least one ground stub, the at least one ground stub comprising an extension of the ground layer of a predetermined electrical length at a predetermined angle relative to the edge of the printed circuit board..
Galtronics Corporation Ltd.

Uplink training for mimo implicit beamforming

In a method for beamforming in a multiple input multiple output (mimo) communication system, a data unit is received from a communication device via a mimo communication channel, and it is determined whether the data unit satisfies one or more selection criteria. Further, when it is determined that the data unit satisfies the one or more selection criteria, the data unit is selected to be used in developing a steering matrix for transmitting data units to the communication device..
Marvell World Trade Ltd.

Beam modulation and demodulation method and apparatus based on beam-space multiple input multiple output (mimo) antenna system

Provided is a beam modulation and demodulation method and apparatus based on a beam-space multiple input multiple output (mimo) antenna system, the beam modulation method including generating a preparatory beam list including a plurality of beams, generating a beam combination table of beam combinations of beams selected from the preparatory beam list, generating a beam modulation rule to map the beam combinations and bit data patterns, and determining a beam combination corresponding to input data from the beam combination table based on the beam modulation rule.. .
Korea Advanced Institute Of Science And Technology

Method and base station for mu-mimo transmission in wireless communication system

The present disclosure provides a method and base station for multiple user-multiple input multiple output (mu-mimo) transmission in a wireless communication system. The base station re-allocates frequency resources of a dmrs port which are allocated to n first data flows to m second data flows, wherein m is greater than n, and n first data flows may be used by n first ues or less than n first ues.
Ntt Docomo, Inc.

Spatial null creation using massive mimo (m-mimo)

In a base station having a massive multiple input multiple output (m-mimo) antenna array, the availability of the m-mimo antenna array is exploited to manage the interference caused by the base station to neighboring cells. In one embodiment, the large number of antenna elements of the m-mimo antenna array are used to create precise transmit and/or receive spatial nulls at specific user equipments (ues) being served by a neighboring cell and/or in select areas of the neighboring cell.
Broadcom Corporation

Cellular array with steerable spotlight beams

Cellular array implementations with multiple steerable spotlight beams irradiated from a common aperture are disclosed herein. Such an approach can easily be adapted to suit various geographical population densities and distributions.

Method, apparatus and system for electrical downtilt adjustment in a multiple input multiple output system

Machine-readable media, methods, apparatus and system for electrical downtilt adjustment in a multiple input multiple output system are disclosed. In some embodiments, an apparatus may comprise an electrical downtilt module to determine an electrical downtilt angle for an antenna port selected from a number of antenna ports based on information from an user equipment (ue); and a codebook module to select a codeword corresponding to the antenna port from a codebook and calculate a weight of an antenna array of the enb through inputting the electronic downtilt angle into the codeword, wherein the codebook has a first number of codewords, each of the codewords having a second number of elements to represent the weight of the antenna array, and wherein each of the codewords corresponds to each of the antenna ports and each of the elements corresponds to each antenna of the antenna array..

Methods and apparatuses for channel estimation and feedback in a three-dimensional multiple input and multiple output system

Embodiments of the present disclosure relate to methods and apparatuses for channel estimation and feedback in a three dimensional multiple input multiple output (3d-mimo) system. A method may comprise: transmitting a plurality of reference signals for a plurality of columns in an antenna array; receiving indication information on configuration adjustment of a precoding information feedback, wherein the indication information is based on measurement on the plurality of reference signals; and adjusting a configuration of the precoding information feedback based on the indication information so that a multiple vertical precoding information feedback is enabled when it can obtain a performance gain.

Delay estimation multiple input multiple output communications system, and system

A delay estimation method for a multiple input multiple output communications system, includes: calculating, by a receiver, a channel response matrix of a multiple input multiple output mimo communications system, where there are n transmit channels and m receive channels in the mimo communications system, n≧2, m≧2, and the channel response matrix includes channel responses of n*m sub-channels; calculating, by the receiver, an integer delay, relative to a reference sub-channel, of each of the n*m sub-channels according to the channel response matrix, where the reference sub-channel is any sub-channel in the n*m sub-channels; calculating, by the receiver, fraction delays of the n*m sub-channels according to the channel response matrix; and separating out, by the receiver, delays of the m receive channels according to delays of the n*m sub-channels.. .
Huawei Technologies Co., Ltd.

Apparatus and transmitting and receiving of cyclic shift parameter for supporting orthogonality in mimo environment

A method includes: determining a cyclic shift (cs) parameter that implicitly indicates an orthogonality allocation rule and orthogonality-related information, by determining a multiple access state of a user equipment (ue), and transmitting the determined cs parameter to the ue, wherein the orthogonality-related information includes an orthogonal cover code indicated by the cs parameter, the orthogonality allocation rule is determined as a uniform scheme or a non-uniform scheme according to the cs parameter, determining the cs parameter by which the non-uniform scheme is applied if the ue is in a single user multiple input multiple output state, and determining the cs parameter by which the uniform scheme is applied if the ue is in a multiple user multiple input multiple output state.. .
Pantech Co., Ltd.

Method and base station for csi process configuration and method and user equipment for csi feedback

The present disclosure provides a method in a base station for channel state information (csi) process configuration and an associated base station. The method comprises: setting csi process information for a user equipment (ue) supporting three dimensional (3d) multiple input multiple output (mimo), the csi process information including at least an index of a csi reference signal resource (csi-rs-r) for a vertical direction of a 3d mimo antenna array; and transmitting the set csi process information to the ue.
Sharp Kabushiki Kaisha

Method and implementing wireless body area network

Disclosed are a method and apparatus for implementing a wireless body area network (wban). The present invention relates to multiple input multiple output mimo technologies; and more particularly to a method and apparatus for implementing a wireless body area network.
Zte Corporation

Method for transmitting and receiving physical layer convergence procedure protocol data unit in wireless local area network system supporting power save mode operation and the same

A method of transmitting a data frame in a wireless local area network (wlan) is provided. The method includes transmitting, by an access point (ap), a scheduling information element including information on a time period for data frame transmission to a first station (sta) and a second sta, wherein the scheduling information element includes an offset field indicating a start time point of the time period and transmitting, by the ap, the data frame to the first sta and the second sta by using a multi user-multiple input multiple output (mu-mimo) transmission scheme after the start time point indicated by the offset field..
Lg Electronics Inc.

Method and reporting feedback information for multi-carrier operation

Method and apparatus for reporting feedback information for multi-carrier operation are disclosed. A wireless transmit/receive unit (wtru) is configured with multiple carriers.
Interdigital Patent Holdings, Inc.

Method for transmitting reference signals in a downlink multiple input multiple output system

A method for transmitting a reference signal for channel measurement (csi-rs) to a user equipment; a base station therefore; a method for receiving a csi-rs; and the user equipment therefore are discussed. The method for transmitting a csi-rs according to one embodiment includes transmitting csi-rs pattern information for indicating a pattern of time-frequency resource to be nulled, hereinafter referred to as null csi-rs pattern, and csi-rs subframe information for indicating in which subframe the null csi-rs pattern occurs; and nulling a time-frequency resource corresponding to the null csi-rs pattern in a subframe corresponding to the csi-rs subframe information, hereinafter referred to as null csi-rs subframe, based on the csi-rs pattern information and the csi-rs subframe information.
Lg Electronics Inc.

Method for uplink multiuser data transmission and system for uplink multiuser multiple input multiple output

The embodiments of the present disclosure disclose a method for uplink multiuser data transmission and a system for uplink multiuser multiple input multiple output. The method includes: sending, by an access point ap, indication information to at least two stations stas, wherein the indication information is used for indicating that the at least two stas perform an uplink multiuser data transmission; receiving, by the ap, uplink data sent by the at least two stas through channels from the at least two stas to the ap, respectively; and demodulating, by the ap, the uplink data sent by the at least two stas using receiving beams corresponding to pre-estimated channels from the at least two stas to the ap, respectively.
Huawei Technologies Co., Ltd.

Antenna isolator

An antenna, including, but not limited to, a multiple input multiple output antenna is provided. The antenna may include, but is not limited to, a transmission array configured to radiate in a first frequency range, the transmission array including a plurality of dipoles, and an isolator located between the plurality of dipoles of the transmission array, the isolator including at least one conductive strip..
Galtronics Corporation Ltd.

System and multi-user multiple input multiple output communications

A method for operating a communications controller in a wireless communications system includes scheduling a pair of user equipments (ue) located in different ones of a plurality of split beams using an appropriate code pair that produces the plurality of split beams for multi-user multiple-input multiple output (mu-mimo) mode transmission, and transmitting data packets to the pair of ues in accordance with the appropriate code pair.. .
Futurewei Technologies, Inc.

Method and processing uci and transmission thereof based on mimo system

The present invention provides a method and apparatus for processing uplink control information (uci) and a method for transmitting the uci based on a multiple input multiple output system, which processing method comprises: repeating ack/nack source bits and/or rank indicator (ri) source bits in the uplink control information to form m groups, with each group corresponding to a code word (s302), wherein m is the total number of code words; carrying out channel encoding on the ack/nack source bits and/or ri source bits of each code word to obtain qack*li output bits (s304), wherein qack is the channel encoding output bits corresponding to each layer in a certain code word, l is the total number of layers, and the layer number corresponding to the i-th code word is li; and multiplexing and interleaving the output bits and the data bits of the corresponding code word (s306). The present invention solves the problems of transmission and channel encoding of the ack/nack and/or ri in the multiple input multiple output (mimo) system, and at the same time takes into account high load situations and backward compatibility..
China Academy Of Telecommunications Technology

Method for transmitting and receiving data unit based on uplink multiple user multiple input multiple output transmission and the same

In an aspect, a method of receiving a data unit, performed by an access point (ap), in a wireless lan (wlan) system is provided. The method includes transmitting a signal protection frame, the signal protection frame comprising a group id field indicating a multiple input multiple output (mimo) transmission sta group including a first station (sta) and a second sta; and, a spatial stream field indicating a number of spatial streams allocated to each of member stas included in the mimo transmission sta group; receiving a first preamble for a first data unit from the first sta; receiving a second preamble for a second data unit from the second sta; and simultaneously receiving the first data unit from the first sta and the second data unit from the second sta..
Lg Electronics Inc.

Method and transmitting reference signal, measuring and reporting channel state information, and configuring the same

A method in which a base station transmits a csi (channel state information)-rs (reference signal) in a mimo (multiple input multiple output) antenna system is provided. The base station periodically transmits a csi-rs for first csi to a terminal.
Electronics And Telecommunications Research Institute

Sub-band feedback for beamforming on downlink multiple user mimo configurations

A method in a communication network includes an access point, using a multiple input multiple output antenna configuration, sending out a sounding packet to a plurality of client stations. The client stations determine a channel estimation of the sounding packet, but only a channel estimation of a portion of the entire sounding packet to avoid processing the entire packet.
Marvell World Trade Ltd.

Equalization in the receiver of a multiple input multiple output system

Embodiments of the invention concern a method of equalizing (s9), in a turbo equalizing system (s10), by sphere decoding (s11) a signal transmitted over a channel by a multiple input multiple output system, comprising: receiving (s3) said transmitted signal, building (s4) at least one search tree, providing (s6) likelihoods of bits, for said transmitted signal, from said built search tree(s) and from said received transmitted signal, wherein equalizing method (s9) also comprises receiving feedback signal from a channel decoder (s8) of said turbo equalizing system (s10), and wherein said feedback signal is used to build (s4) said search tree(s).. .
Telefonaktiebolaget L M Ericsson (publ)

Dual qr decomposition decoder for spatially multiplexed mimo signals

Wireless communication systems employ multiple input multiple output (mimo) transmission and reception schemes to increase performance and the data rate of the system. A new approach for an sm-mimo decoder that operates on the received symbols in parallel is presented.
Mbit Wireless, Inc.

Transmission apparatus, transmission method, and wireless communication system for orthogonal cover code (occ) generation and occ mapping

A base station which performs multiple input multiple output (mimo) transmission. A processor configured to generate reference signals by spreading with four groups of orthogonal code sequences, each group of orthogonal code sequences including four orthogonal sequences, wherein the orthogonal code sequences correspond to transmission layers and each of the orthogonal code sequences has a length of four, and a transmit circuit configured to transmit the reference signals.
Fujitsu Limited



Multiple Input Multiple Output topics:
  • Multiple Input Multiple Output
  • Communication System
  • Base Station
  • Access Point
  • Modulation
  • Pilot Signal
  • Scheduling
  • Demodulation
  • Channel Estimation
  • Communications
  • Computer Program
  • Beamforming
  • User Group
  • Channel Status
  • Allocation


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