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Multiple Input Multiple Output patents



      
           
This page is updated frequently with new Multiple Input Multiple Output-related patent applications. Subscribe to the Multiple Input Multiple Output RSS feed to automatically get the update: related Multiple RSS feeds. RSS updates for this page: Multiple Input Multiple Output RSS RSS


Method and apparatus for a multi-user multiple input multiple output (mu-mimo) network with single transceiver…

Cambium Networks Limited

Method and apparatus for a multi-user multiple input multiple output (mu-mimo) network with single transceiver…

Method and apparatus for cancelling interference

Lg Electronics

Method and apparatus for cancelling interference


Date/App# patent app List of recent Multiple Input Multiple Output-related patents
07/30/15
20150215862 
 Method for providing information of access point selection patent thumbnailnew patent Method for providing information of access point selection
A method of transmitting basic service set (bss) load information. The method according to one embodiment includes establishing, by an access point (ap), an association with at least one very high throughput (vht) station that has successfully synchronized with the ap and that has a capability of receiving at least one spatial stream of a plurality of spatial streams transmitted via a multi user-multiple input multiple output (mu-mimo) transmission; and broadcasting, by the ap, a beacon frame that includes load information including a station count field and an antenna utilization field.
Lg Electronics Inc.


07/30/15
20150215017 
 Method and  cancelling interference patent thumbnailnew patent Method and cancelling interference
A method and apparatus for cancelling interference are disclosed. The method for cancelling interference, performed by a user equipment (ue) includes receiving interference transmission layer restriction information about a neighbor base station (bs) transmitting an interference signal or information about the number of antenna ports used in transmitting the interference signal by the neighbor bs, detecting control information about the interference signal using the interference transmission layer restriction information, and removing the interference signal using the detected control information.
Lg Electronics Inc.


07/30/15
20150215013 
 Method and  a multi-user multiple input multiple output (mu-mimo) network with single transceiver subscriber modules patent thumbnailnew patent Method and a multi-user multiple input multiple output (mu-mimo) network with single transceiver subscriber modules
In a multi-user multiple input multiple output (mu-mimo) wireless network comprising an access point and several subscriber modules, a subscriber module configured with a single transceiver and two antennas elements operates a polarization switch to cause one of the two antenna elements to be connected with the single transceiver. The polarization switch may be operated in response to receiving a command from the access point.
Cambium Networks Limited


07/09/15
20150195825 
 Control channel transmitting method, base station and terminal patent thumbnailControl channel transmitting method, base station and terminal
A method used by a terminal in a wireless communication system, the method includes: receiving a control channel transmitted from a base station with use of a control channel format selected from among a plurality of control channel formats, each including modulation scheme information, according to whether multiple input multiple output (mimo) transmission is applied or not, and wherein a number of bits indicating a modulation scheme included in a control channel format to be selected when the mimo transmission is applied is greater than that included in a control channel format to be selected when the mimo transmission is not applied.. .
Fujitsu Limited


07/02/15
20150188733 
 Method for removing signal interference based on multiple input multiple output patent thumbnailMethod for removing signal interference based on multiple input multiple output
Disclosed is a method for removing signal interference in a mimo-based interference removing apparatus including transmitting a reference signal to at least one receiver; if channel information is estimated by the receiver, receiving the estimated channel information from the receiver as a feedback signal; and producing transmission pre-coding matrix, beam forming matrix, and weighted matrix using the received channel information. Further, the method includes transmitting information containing the transmission pre-coding matrix, the beam forming matrix, and the weighted matrix by including them in a pilot signal to the receiver, and the mimo-based interference removing apparatus comprises at least one transmitter..
Electronics And Telecommunications Research Institute


07/02/15
20150188686 
 Method of performing link adaptation procedure patent thumbnailMethod of performing link adaptation procedure
A method of communicating in a wireless local area network is described. An access point transmits a first physical layer protocol data unit (ppdu) via multi-user multiple input multiple output (mu mimo) transmission to a plurality of stations.
Lg Electronics Inc.


06/25/15
20150181363 
 Point-to-multipoint microwave communication patent thumbnailPoint-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.


06/25/15
20150180684 
 Csi-rs antenna ports extension and 3d codebook design patent thumbnailCsi-rs antenna ports extension and 3d codebook design
A system and a method is disclosed for selecting at least one vertical precoding vector of a three-dimensional multiple input multiple output (3d-mimo) configuration based on channel state information-reference signal (csi-rs) information that is feedback from a wireless terminal device to an evolved node b (enb). The 3d-mimo csi-rs process is configured for a plurality of csi-rs ports in which the plurality of csi-rs ports that are grouped into a plurality of csi-rs port groups and in which corresponds to the 3d arrangement of antennas.

06/25/15
20150180561 
 Spatial null creation using massive mimo (m-mimo) patent thumbnailSpatial 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


05/28/15
20150146812 
 Uplink multi-user multiple input multiple output beamforming patent thumbnailUplink multi-user multiple input multiple output beamforming
As part of a beamforming training procedure, a first communication device transmits a beamforming training packet. The first device then receives a plurality of respective beamforming feedback packets from a plurality of second communication devices.
Marvell World Trade Ltd.


05/28/15
20150146676 

Downlink multiple input multiple output enhancements for single-cell with remote radio heads


A base station selects a subset of at least one geographically separated antennas for each of the plurality of user equipments. The base station forms at least layer of data stream including modulated symbols, precedes the data stream via multiplication with the nt by preceding matrix where n is the number of said layers and nt is the number of transmit antenna elements and transmits the precoded layers of data stream to the user equipment via the selected geographically separated antennas.
Texas Instruments Incorporated


05/28/15
20150146654 

Uplink multi-user multiple input multiple output for wireless local area network


A method for selecting members of a client uplink group is described. An uplink traffic characteristic information signal is received from each of a plurality of communication devices.
Marvell World Trade Ltd.


05/28/15
20150146652 

System and a scale-invariant symbol demodulator


It is possible to improve the spectral efficiency of multi-layer multiple input multiple output (mimo) transmissions by estimating the magnitude parameter at the receiver side, rather signaling the magnitude parameter from the transmitter to the receiver. In long term evolution (lte) networks, the user equipment (ue) may estimate the power allocation (pa) parameter by executing a series of steps.
Futurewei Technologies, Inc.


05/28/15
20150146512 

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.


05/21/15
20150139046 

Transmitter and receiver calibration for obtaining the channel reciprocity for time division duplex mimo systems


A communication device operating in time division duplex (tdd) mode using multiple antennas is provided herein. The communication device uses receive channel estimation measurements to perform transmit beamforming and multiple input multiple output (mimo) transmission, based on self-calibration of the various up/down paths via a method of transmission and reception between its own antennas, thus achieving reciprocity mapping between up and down links.
Magnolia Broadband Inc.


05/14/15
20150131629 

Methods and system 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..

05/07/15
20150124911 

Systems and methods for improved wireless channel estimation


Systems and methods are disclosed herein to provide improved channel estimation in a wireless data communication system, including but not limited to multiple input multiple output (mimo) and orthogonal frequency division multiplexing (ofdm) communication systems. In accordance with one or more embodiments and aspects thereof, a channel estimation system is disclosed that regenerates a representation of the original transmitted signal from the received digital bitstream and selectively applies it to refine and improve channel estimation and signal equalization calculations using the data symbols contained within received frames.
Ixia


05/07/15
20150124901 

Channel quality indicator apparatus and method


A method and apparatus are provided for a wireless communication system including a base station and at least one user equipment. A channel quality indicator (cqi) table can be generated so that only an index corresponding to the measured cqi needs to be fed back to the base station.
Microsoft Corporation


05/07/15
20150124693 

Radio repeater apparatus and system, and operating method thereof


A radio repeater system may include: a multiple input multiple output (mimo) donor antenna configured to transmit/receive mimo signals to/from base stations; a beamforming control unit configured to control beamforming by adaptively applying a phase weight to the repeated signals received from the mimo donor antenna; an interference signal cancellation unit configured to estimate and analyze feedback interference signals introduced from a mimo service antenna to the mimo donor antenna and adaptively cancel the feedback interference signals; and the mimo service antenna configured to transmit/receive mimo signals to/from radio terminals in a service area.. .
Airpoint Co., Ltd.


04/30/15
20150117563 

Method for transmitting channel quality information in a multiple input multiple output system


A method for transmitting channel quality information (cqi) in a mimo system is provided that allows a receiver to feed back a cqi value to a transmitter. The method includes receiving a transmission (tx) pilot signal for each tx antenna from a base station (bs), measuring a first cqi value of a first codeword and a second cqi value of a second codeword based on the pilot signal, and transmitting the first cqi value of the first codeword and the second cqi value of the second codeword to the bs where at least the first or second cqi value includes specific information capable of indicating a transmission restriction status of a corresponding codeword..
Lg Electronics Inc.


04/30/15
20150117372 

Assignment of radio resources to be used on downlink transmissions in a multiple input multiple output (mimo) communication system


An access point and method are described herein for receiving a report from the mobile station containing at least one of a channel quality and a signal strength for each of one or more streams associated with each of one or more transmission modes used during a period of time to send payload to the mobile station, and analyzing the received report to determine one or more downlink control parameters to be used for sending additional payload to the mobile station. In addition, a mobile station and method are described herein for detecting one or more modes of transmissions used by the access point during a period of time to send payload to the mobile station, generating a report containing at least one of a channel quality and a signal strength for each of one or more streams associated with each of the detected one or more transmission modes used by the access point to send the payload to the mobile station, and transmitting the report to the access point..
Telefonaktiebolaget L M Ericsson (publ)


04/30/15
20150117371 

Assignment of radio resources to be used on uplink transmissions in a multi-user multiple input multiple output (mu-mimo) communication system


An access point and method are described herein for interacting with a mobile station and assigning radio resources (e.g., multiple usfs, multiple tscs, multiple mcss, multiple pc levels) at least a portion of which are to be used for upcoming uplink transmissions by the mobile station to the access point. In addition, a mobile station and method are described for interacting with an access point and receiving therefrom assigned radio resources (e.g., multiple usfs, multiple tscs, multiple mcss, multiple pc levels) at least a portion of which are to be used for upcoming uplink transmissions to the access point..
Telefonaktiebolaget L M Ericsson (publ)


04/23/15
20150110210 

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


04/16/15
20150103934 

Method and communication in millimeter wave mimo communication environment


A method and apparatus for communication in millimeter wave multiple input multiple output (mimo) communication are provided. A beamforming matrix by groups for terminals that are classified into a group is generated, and a pilot signal that is beam-formed based on the generated beamforming matrix by groups is transmitted to the terminals.
Electronics And Telecommunications Research Institute


04/16/15
20150103654 

Method and transmitting management information in wireless local area network system


A method for transmitting load information in a wireless local area network. The method according to one embodiment includes generating, by an access point (ap), basic service set (bss) load information, the bss load information including a multiple input multiple output (mimo) channel underutilization field; and transmitting, by the ap, the bss load information.
Lg Electronics Inc.


04/02/15
20150092895 

Adaptation techniques in mimo


A method of the multiple input multiple output feedback is disclosed. In accordance with an embodiment of the invention, the multiple input multiple output feedback method includes a receiver receiving a reference signal from a base station and calculating a signal to interference and noise ratio from the received reference signal.
Intel Mobile Communications Gmbh


04/02/15
20150092876 

Method and amplifying multiple input multiple output (mimo) in wireless communication system


A method and apparatus for amplifying a mimo signal in a wireless communication system are disclosed. A signal amplifier for amplifying a mimo signal in a wireless communication system includes: a recognition module for recognizing network information and antenna information of a source device; and an adaptive link construction module for forming a link between a plurality of antenna with respect to the source device and a plurality of antenna with respect to the destination device on the basis of the recognized information..
Lg Electronics Inc.


04/02/15
20150092621 

Full duplex system in massive mimo


A multiple input multiple output (mimo) antenna system is implemented for communications in a wireless device. Mimo beamforming techniques are utilized to improve communications, and may be utilized in full-duplex mode.
Broadcom Corporation


03/26/15
20150085947 

Communication system and method using space division multi-user multiple input multiple output (sd-mimo) communication method


Provided is a communication system using a space division multi-user multiple input multiple output (sd-mimo) communication method. A transmission apparatus may transmit, to each of terminals included within a coverage, common control information commonly transmitted to the terminals and individual control information individually transmitted to each of the terminals.
Samsung Electronics Co., Ltd.


03/26/15
20150085944 

Methods of antenna system control in massive mimo systems


A multiple input multiple output (mimo) antenna system is implemented for communications in a wireless device. Information regarding the environment surrounding the wireless device may be used to determine which of the mimo antennas are selected such that communications performance is improved.
Broadcom Corporation


03/26/15
20150085820 

Scattered pilot pattern and channel estimation mimo-ofdm systems


Methods and apparatus are provided for inserting data symbols and pilot symbols in an ofdm (orthogonal frequency division multiplexing) transmission resource utilizing frequency hopping patterns for the data symbols and/or the pilot symbols. Data symbols and pilot symbols are allocated for down link (base station to mobile station) and up link (mobile station to bases station) transmission resources in a two-dimensional time-frequency pattern.
Blackberry Limited


03/26/15
20150085807 

Communication method and system using uplink multiple input multiple output technology


The present invention discloses a communication method and system using mimo technology. The communication method includes: a network side device determines whether a ue uses a single-stream mode or a multi-stream mode as an uplink data transmission mode; and the network side device notifies the ue of indication information indicating the determined uplink data transmission mode.
Huawei Technologies Co., Ltd.


03/12/15
20150071366 

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.


03/12/15
20150071137 

Multiband mimo vehicular antenna assemblies with dsrc capabilities


Disclosed are exemplary embodiments of multiband multiple input multiple output (mimo) vehicular antenna assemblies for installation to a vehicle body wall. In exemplary embodiments, a multiband mimo vehicular antenna assembly generally includes at least one cellular antenna configured to be operable over one or more cellular frequencies (e.g., long term evolution (lte), etc.), at least one satellite antenna configured to be operable over one or more satellite frequencies (e.g., global navigation satellite system (gnss), satellite digital audio radio services (sdars), etc.) and at least one dedicated short range communication (dsrc) antenna configured to be operable over dsrc frequencies..
Laird Technologies, Inc.


03/05/15
20150063503 

Maximum likelihood detection


A method of symbol detection in an electronic device employing multi-user multiple input multiple output (mu-mimo) communication over a first transmission layer of first and second transmission layers comprises various steps. A receiver comprises processing circuitry for performing these steps.
Blackberry Limited


03/05/15
20150063480 

Usage of multiflow and multiple input multiple output in cellular communication systems


For each base station of k base stations of a cellular communications network a maximum number of wanted data streams per carrier is decided that is to be scheduled to a terminal accessing the cellular communications network. The terminal has nr receive antennas and k is an integer equal to or greater than two.

03/05/15
20150063478 

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.


03/05/15
20150063294 

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


A method for transmitting, by a base station, configuration information for a reference signal for channel measurement. The method according to one embodiment includes transmitting, to a user equipment, first resource information for indicating a first pattern, first subframe information for indicating a first subframe, second resource information for indicating a second pattern, and second subframe information for indicating a second subframe.
Lg Electronics Inc.


03/05/15
20150063293 

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.


02/19/15
20150049698 

Method for transmitting uplink control information


A method for transmitting uplink channel state information (csi) in a coordinated multi-point (comp) system is provided, which includes coding and multiplexing operations. In a multiple input multiple output (mimo) system, a method for transmitting csi of multiple coordinated points according to an embodiment of the present invention includes coding the csi of the multiple coordinated points, modulating the coded csi of the multiple coordinated points, and multiplexing the modulated csi on a physical uplink shared channel (pusch).
Alcatel Lucent


02/12/15
20150043450 

Receiver-aided multi-user mimo and coordinated beamforming


Embodiments include systems and methods for improving the beamforming efficiency of multi-user multiple input multiple output (mu-mimo) and/or coordinate beamforming (cb) in wireless multi-access networks. In one aspect, a receiver-aided approach for mu-mimo and/or cb is provided.
Broadcom Corporation


02/12/15
20150043341 

Method and resource allocation in a mimo communication system


A method of controlling uplink multiple input multiple output transmission between user equipment and a base station of a wireless communications network, user equipment and a computer program product are disclosed. The method comprises the steps of: identifying whether insufficient capacity exists on a primary uplink stream to carry pending uplink data packets; and if insufficient capacity exists, preventing establishment of a secondary uplink stream when it is determined that pending uplink data packets which would not be carried by the primary uplink stream would under-utilise the secondary uplink stream.
Alcatel Lucent


02/05/15
20150036674 

Method and apparatus of transmitting a spatial stream for mu - mimo in a wireless local area network system


A method of transmitting a spatial stream for multi user (mu)-multiple input multiple output (mimo) in a wireless local area network system and a transmitter for performing the method are provided. The method includes transmitting, to a receiver, a management frame including group information to assign or change a position of a plurality of spatial streams corresponding to each of a plurality of groups, and transmitting, to the receiver, a frame including at least one spatial stream, wherein the group information includes a plurality of group indicators and a plurality of spatial stream (ss) indicators, each of the plurality of group indicators indicating whether the receiver is a member of each of the plurality of groups, each of the plurality of ss indicators indicating a position of the plurality of spatial streams corresponding to each of the plurality of groups..
Lg Electronics Inc.


01/29/15
20150030097 

Method and subcarrier and antenna selection in mimo-ofdm system


A method and apparatus for radio resources control in a multiple input multiple output (mimo) orthogonal frequency division multiplexing (ofdm) communication system are disclosed. Radio resources are controlled by producing and applying a respective adaptive modulation and coding to each data stream.
Interdigital Technology Corporation


01/29/15
20150030093 

Encoding apparatus and encoding multiple input multiple output communication system


When precoding information corresponding to data items of respective layers to be transmitted is received from an upper layer, an encoding apparatus of a multiple input multiple output (mimo) communication system selects a precoding matrix among a plurality of precoding matrices stored in a storage using the precoding information and precodes the data items of the respective layers by simple operations consisting of at least one operation combination of addition, subtraction, selection, and inversion operations in accordance with a kind of the selected precoding matrix and a precoding operation pattern.. .
Electronics And Telecommunications Research Institute


01/29/15
20150029986 

Mu-mimo transmission method in wireless lan system


A multi-user-multiple input multiple output (mu-mimo) transmission method performed by an access point (ap) in a wireless local area network (wlan) system is provided. The method includes transmitting an mu-mimo initiation message to a destination station (sta) which is a target of a mu-mimo transmission, the mu-mimo initiation message informing that mu-mimo transmission will be initiated, receiving a sounding frame transmitted by the destination sta as a response to the mu-mimo initiation message and performing mu-mimo transmission on data by beamforming based on channel information obtained from the sounding frame.
Lg Electronics Inc.


01/22/15
20150023248 

Multi-user multiple input multiple output (mimo) communication with distributed antenna systems in wireless networks


A system and a method are provided. The method includes deploying a plurality of antennas of an access point or a base station as a distributed antenna system.
Nec Laboratories America, Inc.


01/22/15
20150023187 

Wireless local area network system and operating the same


A method of operating a wireless local area network (wlan) system is provided. The wlan includes an access point supporting uplink multiple user multiple input multiple output mode.
Samsung Electronics Co., Ltd.


01/08/15
20150010104 

Transmitter and signal transmitting method thereof


A signal transmitter and receiver are provided. The transmitter includes: a multiple input multiple output (mimo) precoder configured to, in response to a first input signal and a second input signal, generate a first transmission signal and a second transmission signal by performing mimo precoding by pre-phase shifting or pre-phase shifting/hopping the second input signal, and superposition encoding the first input signal and the pre-phase shifted or pre-phase shifted/hopped second input signal; and an orthogonal frequency division multiplexing (ofdm) modulator configured to ofdm modulate the first transmission signal and the second transmission signal..
Samsung Electronics Co., Ltd.


01/01/15
20150003374 

Coexistent channel access method


A method for transmitting a multiple input multiple output (mimo) packet in a wireless local area network is described. The method includes generating a physical layer protocol data unit (ppdu) including a short training field (stf), a long training field (ltf), a very high throughput (vht)-signal field, a vht-stf, a vht-ltf and a plurality of data streams.
Lg Electronics Inc.


01/01/15
20150003350 

Downlink transmission in a mu-mimo system


A method is provided for managing a downlink transmission in a multi user-multiple input multiple output (mu-mimo) system. The mu-mimo system includes a base station and a set of remote radio units connected to the base station.
Orange


01/01/15
20150003325 

Progressive channel state information


Embodiments of system, device, and method configurations for implementing a progressive channel state indicator (csi) evaluation are disclosed herein. In one example, techniques for increasing the precision of channel feedback information by detecting a best beam index in a progressively scanning grid of beams is deployed in a long term evolution (lte) network.

01/01/15
20150003239 

Method and response scheduling in a downlink multiple-user multiple input multiple output network


Embodiment and methods and apparatus for scheduling one or more responses for multiple stations (stas) in a downlink multiple-user multiple-input-multiple-output (mimo) network transmission are provided.. .

12/25/14
20140376601 

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.


12/25/14
20140376503 

Control channel transmitting method, base station and terminal


A method used in a communication system including a base station and a terminal, the method includes: transmitting from the base station to the terminal a control channel with use of a control channel format selected from among a plurality of control channel formats, each including modulation scheme information, according to whether multiple input multiple output (mimo) transmission is applied or not, and receiving the control channel by the terminal, wherein a number of bits indicating a modulation scheme included in a control channel format to be selected when the mimo transmission is applied is greater than that included in a control channel format to be selected when the mimo transmission is not applied.. .
Fujitsu Limited


12/18/14
20140370905 

Ue capability report method and apparatus in mobile communication system


A method and an apparatus for reporting a capability of a user equipment (ue) supporting advanced functions such as carrier aggregation (ca) are provided. The method includes checking, when a control message requesting a capability report is received, a radio access technology (rat) type and transmitting, when the rat type is set to evolved universal terrestrial radio access (eutra), at least one band combination information on at least one band combination supported by the terminal.
Samsung Electronics Co., Ltd.


12/11/14
20140362834 

Scheduling information transmission method, device, and communications system


A scheduling information transmission method, device, and communications system are provided. The method includes: generating a channel attribute parameter and a serving grant (sg), where the channel attribute parameter and the sg are used for data scheduling of uplink multiple input multiple output (mimo); and delivering the channel attribute parameter and the sg to a user equipment (ue) through a target channel, where the channel attribute parameter is used by the ue to determine a primary-stream enhanced dedicated channel transport format combination indicator (e-tfci) and a secondary-stream e-tfci.

11/27/14
20140348260 

Method to implement a multiple input multiple output transmission mode


A method to implement a multiple input multiple output transmission mode in the method of the invention, said mimo transmission mode comprises using a certain number of antennas in a user equipment and a given number of antennas in a radio access node for the communication between said user equipment and said radio access node, said communication carried out by means of a communication channel, said communication channel represented by a channel matrix. The method of the invention is characterised in that it comprises uncorrelating at least part of the coefficients of said channel matrix when said communication channel is degenerate by making use of at least one additional antenna in each of said radio access node and said user equipment in order to change the radiation pattern associated to transmission layers of said communication enabling the use of an enhanced mimo transmission mode..

11/27/14
20140348097 

Method for performing channel sounding in wireless lan system and supporting same


The present invention relates to a method of performing channel sounding in a wireless lan system. The method includes transmitting a null data packet announcement (ndpa) frame for providing notice of an ndp to be transmitted, and transmitting the ndp and receiving a feedback frame from a station (sta).

11/27/14
20140347240 

Mimo antenna arrays built on metamaterial substrates


A magnetic permeability enhanced metamaterial is used to enhance the antenna array of a multiple input multiple output (mimo) communication system. A rectangular patch antenna array is formed including a stack of a plurality of unit cells, where each unit cell includes an inductive loop of magnetic permeability enhanced metamaterials embedded in a host dielectric substrate.

11/20/14
20140341320 

Method and transmitting data streams in mimo system


A method for transmitting data streams in a multiple input multiple output (mimo) system is provided, where each data stream is mapped to multiple layers in an mimo channel space for transmission, and the method includes: performing inter-layer interleaving for n data streams to obtain n interleaved data streams; mapping the n interleaved data streams respectively to n layers in the mimo channel space, and transmitting the n interleaved data streams that are mapped to the n layers. By using the method of the present invention, a combined cqi can be used in a better way to improve mimo transmission performance.

11/20/14
20140341314 

Implementing multi user multiple input multiple output (mu mimo) base station using single-user (su) mimo co-located base stations


A system that implements multi user multiple inputs multiple outputs (mu mimo) base station using a plurality of co-located single-user (su) mimo base stations is provided herein. The system may include a number n co-located single-user multiple input multiple output (su-mimo) bases stations each having a number k mimo rank, wherein said n co-located su-mimo base stations are configured to share a common antennas array, operating over a common frequency band; a front-end mimo processor connected to said n co-located su-mimo base stations and further coupleable to said common antennas array; and a back-end coordinator configured to collaboratively assist in optimizing operation of said n co-located su-mimo base stations, such that said n co-located su-mimo base stations and said front-end mimo processor collaboratively implement a multi-user multiple input multiple output (mu-mimo) base station capable of dynamically separating a coverage area into n*k spatial channels..

11/13/14
20140334565 

Method and miniaturization of mimo systems via tightly coupled antenna array


In a multiple input multiple output (mimo) system, an apparatus and method includes a tightly coupled array antennas (tca) or current sheet antennas (csa). Far-field radiation patterns from any current sheet antenna are formed from the combination of the fields generated by a set of currents on the csa of array port orthogonal modes, such as the characteristic modes (cm).

11/13/14
20140334460 

Method and transmitting reference signals in uplink multiple input multiple output (mimo) transmission


The present invention relates to a wireless communication system, and more particularly, to a method and an apparatus for transmitting reference signals in uplink mimo transmission. According to one embodiment of the present invention, the method for transmitting uplink signals through a terminal in the wireless communication system comprises the steps of: receiving control information including the information on a cyclic shift and/or an orthogonal cover code; allocating the multiplexed reference signals onto an uplink subframe; and transmitting the subframe through a multi-antenna.

11/13/14
20140334413 

Method for setting modulation and coding scheme in wireless ran system and apparatus supporting the same


A method of transmitting data by a multi-user multiple input multiple output (mu-mimo) transmitter in a wireless local area network system. The method includes transmitting by the mu-mimo transmitter, a physical layer convergence procedure (plcp) protocol data unit (ppdu), the ppdu including a bundled interface field, a modulation and coding scheme (mcs) index field and a data field; and transmitting, by the mu-mimo transmitter, the ppdu to a receiving station.

10/30/14
20140321568 

Method and managing control channel in a mobile communication system using multiple antennas


Methods and apparatuses are provided for transmitting control information to a terminal, by a base station, in a multiple input multiple output (mimo) mobile communication system. The control information is generated including a field indicating either a precoding scheme or a pilot format according to a type of pilot used for data demodulation in the terminal.

10/23/14
20140317241 

Utility-maximization framework for dynamic adaptive video streaming over hypertext transfer protocol in multiuser-multiple input multiple output long-term evolution networks


A method for scheduling user equipment (ue) devices comprising sorting the plurality of ue devices based on a weight of priority associated with each of the ue devices with respect to a plurality of subbands, and assigning one or more of the ue devices to each of the subbands using the weight of priority associated with the ue devices, wherein the weight of priority is based on one or more network utility functions associated with the ue devices. A computer program product comprising computer executable instructions to receive a media content segment using a dynamic adaptive video streaming over hypertext transfer protocol (http) (dash) protocol, monitor a playback buffer size of a ue device, monitor a battery energy level of the ue device, and adjust a representation quality level in a segment request based on the target requested video rate, the playback buffer size and the battery energy level..

10/23/14
20140314166 

Adaptive signaling and feedback for multi-user multiple input multiple output (mu-mimo)


Embodiments recognize that multi-user multiple input multiple output (mu-mimo) performance can be greatly enhanced if additional parameters are provided to the user equipment (ue) during link adaptation and/or data demodulation. Recognizing the overhead that such signaling entails, embodiments provide mu-mimo enhancement solutions that identify and signal only those parameters that can result in a large gain improvement when known at the ue.

10/16/14
20140307819 

Adaptive cross-radio access technology (rat) channel assignment


Systems and methods for channel assignment configuration in a multiple access point (ap) environment are provided. The multiple aps can be homogeneous or heterogeneous and can implement one or more radio access technologies (rats), including massive multiple input multiple output (m-mimo) rats.

10/16/14
20140307818 

Base station configuration using massive multiple input multiple output (m-mimo)


Systems and methods for configuring base stations in a geographic region to handle specific respective types of data traffics are provided. The configuration of the base stations can be static, semi-static, or dynamic.

10/16/14
20140307702 

Massive mimo (m-mimo) support for heterogeneous networks (hetnets)


Systems and methods for enabling a wireless backhaul network between access points (aps) in a wireless network are provided. In an embodiment, the wireless backhaul network is enabled using a massive multiple input multiple output (mimo) radio access technology (rat).

10/09/14
20140301383 

Method and apapratus for transmitting a frame in a wireless lan system


The present invention relates to a method and apparatus for transmitting a frame in a wireless lan system. An access point (ap) receives a single orthogonal frequency division multiplexing (ofdm) symbol from each of a plurality of stations (sta) and a single-tone request to send (srts) frame through a single subcarrier, selects stas for performing uplink (ul) multiuser (mu)-multiple input multiple output (mimo) transmission, and transmits to the plurality of stas a single-tone clear to send (scts) frame allocated to the same subcarrier as a subcarrier to which the srts frames received from the selected stas are allocated..

10/02/14
20140292593 

Multiband mimo antenna assemblies operable with lte frequencies


According to various aspects, exemplary embodiments are disclosed herein of multiple input multiple output (mimo) antenna assemblies operable over multiple frequency bands, including lte (long term evolution) frequencies (e.g., 4g, 3g, other lte generation, b17 (lte), lte (700 mhz), etc.). In various embodiments, an antenna assembly generally includes a first or primary cellular antenna and a second or secondary cellular antenna.

09/25/14
20140286648 

Optical mimo processing


A technique is provided for an optical multiple input multiple output (mimo) processing system. The optical (mimo) processing system includes an interface to a multi-mode fiber at a first end of the optical processing system; m first single-mode waveguides coupled to the interface; wherein the first waveguides are arranged to carry m first optical signals, respectively; n second single-mode waveguides at a second end of the optical processing system, wherein the second waveguides are arranged to carry n second optical signals, respectively, wherein the n second optical signals are associated with n modes carried by the multi-mode fiber; and an optical processing core arranged to transform the first optical signals into the second optical signals such that a correlation between the second optical signals is decreased compared to a correlation between the first optical signals using a plurality of optical couplers for coupling each of the m first optical signals with one another, such that each of the n second optical signals is a linear combination of all of the m first optical signals..

09/25/14
20140286327 

Method for transmitting control information and the same


Methods and devices for transmitting or receiving data in a wireless local area network are provided. The method in one embodiment includes transmitting, by a transmitter, a first long training field (ltf) to a receiver; transmitting, by the transmitter, a very high throughput (vht)-sig-a field to the receiver; transmitting, by a transmitter, a second ltf for multiple input multiple output (mimo) channel estimation to the receiver; transmitting, by the transmitter, a vht-sig-b field to the receiver; and transmitting, by the transmitter, a data field to the receiver, wherein the first ltf, the vht-sig-a field, the second ltf, the vht-sig-b field and the data field are sequentially transmitted, and wherein the second ltf and the data field are mapped to at least one spatial stream based on a mapping matrix but the first ltf and the vht sig-a field are not mapped to the at least one spatial stream..

09/25/14
20140286184 

Method and transmitting reference signal for reducing intercell interference in multiple input multiple output communication system


According to one embodiment, a method for receiving a channel state information-reference signal (csi-rs) for measuring a channel includes: receiving csi-rss on resource elements (res) in a subframe configured for the csi-rss from a base station, wherein if each csi-rs of the received csi-rss is transmitted from each of four or more transmit antenna ports of the base station, at least two res on which each csi-rs is received are associated with each of the four or more transmit antenna ports; and transmitting channel state information based on the received csi-rss.. .

09/18/14
20140269617 

Method for modifying multiple input multiple output mode across radio network controllers


A method for modifying multiple input multiple output (mimo) mode across radio network controllers (rncs) is provided by the present disclosure. In the method of the present disclosure, a serving rnc (srnc) transmits a request message to a drift rnc (drnc), wherein the request message requests the drnc to set a radio link for a mobile equipment in a cell controlled by the drnc, and the drnc feeds back a response message to the srnc based on the capability of the drnc and the cell controlled by the drnc, wherein the response message contains the element used for configuring the radio link in the non-mimo mode.

09/18/14
20140266868 

Methods and systems for multiple input multiple output synthetic aperture radar ground moving target indicator


A multiple-input multiple-output (mimo) synthetic aperture radar (sar) system. The radar system includes spatially offset transmitting antennas simultaneously transmitting at least two distinguishable waveform signals and receiving antennas receiving incoming waveform returns for each of the distinguishable waveform signals.

09/11/14
20140254713 

Communication system and method using space division multi-user multiple input multiple output (sd-mimo) communication method


Provided is a communication system using a space division multi-user multiple input multiple output (sd-mimo) communication method. A transmission apparatus may transmit, to each of terminals included within a coverage, common control information commonly transmitted to the terminals and individual control information individually transmitted to each of the terminals.

09/11/14
20140254514 

Codebook enchancement for long term evolution (lte)


multiple input multiple output systems using a transmit precoder codebook designed for a four-transmitter (4tx) antenna configuration are described. The 4tx antenna configuration is an attractive option for base stations in cellular network environments and it is desirable to use a transmitter precoder codebook that provides sufficient granularity in typical operating scenarios, and to address various antenna configurations.

09/04/14
20140247812 

Mimo communication method, transmitting device, and receiving device


A multiple input multiple output (mimo) communication method and system for performing communication between n (n is an integer greater than or equal to 2) transmitting devices each having a transmit antenna and at least one receiving device having n receive antennas by using a multi-user mimo scheme. The method includes dividing the n transmitting devices into a plurality of sets, and assigning an orthogonal code to each set of transmitting devices as a digital signal sequence to be transmitted by each of the transmitting devices, and arranging the digital signal sequences to be transmitted by the transmitting devices in a frequency axis direction in which an inverse fast fourier transform is performed, and performing coding..

08/28/14
20140241451 

Method for transmitting control information and the same


Methods and devices for transmitting or receiving data in a wireless local area network are provided. The method in one embodiment includes transmitting, by a transmitter, a first long training field (ltf) to a receiver; transmitting, by the transmitter, a very high throughput (vht)-sig-a field to the receiver; transmitting, by the transmitter, a second ltf for multiple input multiple output (mimo) channel estimation to the receiver; transmitting, by the transmitter, a vht-sig-b field to the receiver; and transmitting, by the transmitter, a data field to the receiver, wherein the first ltf, the vht-sig-a field, the second ltf, the vht-sig-b field and the data field are sequentially transmitted, and wherein the second ltf and the data field are mapped to at least one spatial stream based on a mapping matrix but the first ltf and the vht sig-a field are not mapped to the at least one spatial stream..

08/28/14
20140241211 

Mimo-ofdm system for robust and efficient neuromorphic inter-device communication


A multiple input multiple output (mimo) orthogonal frequency division multiplexing (ofdm) system for inter-device communication is described. Information data from each neuromorphic chip is coded and modulated, on the basis of destination, into different channels.

08/28/14
20140241192 

Method and exchanging information between base station and terminal


A method and apparatus of exchanging information on the number of layers which is supported commonly between the base station and the terminals in multi-user multiple input multiple output (mu-mimo) environment is provided for performance enhancement. The communication method of a terminal in a wireless communication system according to the present disclosure includes receiving a reference signal and information on a number of layers supportable simultaneously from a base station, measuring a channel state value based on the reference signal and the number of layers, determining whether the measured channel state value fulfills a minimum required channel state value, and transmitting, when the measured channel state value fulfills the minimum required channel state value, a value determined based on the measured channel state value to the base station..

08/28/14
20140240178 

Portable terminal with antenna device for display element or display assembly including flexible functional region


A portable terminal is provided. The portable terminal includes a flexible display element, a first antenna element disposed at a first region on the display element, a second antenna element disposed at a foldable second region on the display element to face the first region, and a switch element configured to selectively connect the second antenna element.

08/21/14
20140233414 

Mu-mimo-ofdma methods and systems for signaling multi-rank cqis and precoders


A method for determining attributes of communication channels of multi-user (mu)-multiple input multiple output (mimo) users in an orthogonal frequency division multiplexing based multiple access (ofdma) system is disclosed. The method comprises receiving from a base station, for at least one sub-band of contiguous sub-carriers, an indication of an estimate of or an upper-bound on a total number of streams that are co-scheduled by the base station on the at least one sub-band or an indication of a fraction of a transmit power at the base station that is applied to streams that are scheduled for transmission to a particular user, determining one or more signal quality measures for the at least one sub-band based on at least one of the fraction or the estimate of or the upper-bound on the total number of streams that are scheduled by the base station on the at least one sub-band, and transmitting to the base station an indication of the one or more signal quality measures.

08/14/14
20140228028 

Multiple input multiple output (mimo) based concurrent scan of neighbor cells


Methods, systems, and devices are described for concurrently performing handoff-related measurements for neighbor cells using multiple input multiple output (mimo) antenna resources. In one example, a mobile device is in communication with a serving cell.

08/14/14
20140226745 

Multi-user multiple input multiple output wireless communications


A method implemented in a user equipment used in a multi-user multiple input multiple output (mu-mimo) wireless communications system is disclosed. The method includes receiving from a base station an indication of a first modulation type for the user equipment, receiving a first data signal for the user equipment, receiving a second data signal for a co-scheduled user equipment, where a second modulation type for the co-scheduled user equipment is unknown to the user equipment, and deciding the second modulation type.

08/14/14
20140226744 

Communication channel optimization systems and methods in multi-user communication systems


Systems and methods of optimizing communication channels in multi-user communication systems are provided. Coding weights are determined based on communication channel state information for communication channels between a transmitter and multiple receivers.

08/14/14
20140226743 

Optimum interleaver design for a communication system


In a method for determining interleaver parameters for a multiple input multiple output (mimo) communication system, maximum average distance for a plurality of adjacent spatial streams for a plurality of system configurations is determined. An interleaver parameter set for the plurality of system configurations is determined based on the determined maximum average distance..

08/14/14
20140226741 

Implementing multi user multiple input multiple output (mu mimo) base station using single-user (su) mimo co-located base stations


A system that implements multi user multiple inputs multiple outputs (mu mimo) base station using a plurality of co-located single-user (su) mimo base stations is provided herein. The system may include a number n co-located single-user multiple input multiple output (su-mimo) bases stations each having a number k mimo rank, wherein said n co-located su-mimo base stations are configured to share a common antennas array, operating over a common frequency band ; a front-end mimo processor connected to said n co-located su-mimo base stations and further coupleable to said common antennas array; and a back-end coordinator configured to collaboratively assist in optimizing operation of said n co-located su-mimo base stations, such that said n co-located su-mimo base stations and said front-end mimo processor collaboratively implement a multi-user multiple input multiple output (mu-mimo) base station capable of dynamically separating a coverage area into n*k spatial channels..

08/14/14
20140226598 

Control channel transmitting method, base station and terminal


A communication system, that includes a base station and a terminal, whereby the base station includes, a transmitting unit that transmits a control channel to the terminal with use of a control channel format selected from among a plurality of control channel formats, each including modulation scheme information, according to whether multiple input multiple output (mimo) transmission is applied or not, and wherein the terminal includes, a receiving unit that receives the control channel transmitted from the base station, wherein a number of bits indicating a modulation scheme included in a control channel format to be selected when the mimo transmission is applied is greater than that included in a control channel format to be selected when the mimo transmission is not applied.. .

08/07/14
20140219404 

Implementing blind tuning in hybrid mimo rf beamforming systems


A system and a method for applying a blind tuning process to m antennas coupled via n beamformers to a multiple input multiple output (mimo) receiving system having n channels, wherein m>n, are provided herein. The method includes the following steps: periodically measuring channel fading rate at a baseband level to determine the number of antennas l out of k antennas connected to each one of the beamformers, to be combined at each one of the n beamformers; assigning the antennas to the subset l according to some criteria such as best quality indicator; repeatedly applying a tuning process to l antennas in each one of the n beamformers..

08/07/14
20140219263 

Method for providing information of access point selection


A method for providing information of access point (ap) selection in a wireless local area network (wlan) system, the method including receiving from candidate aps the ap selection information including channel correlation information for other stations associated with the candidate aps; and selecting one ap from candidate aps according to the channel correlation information corresponding to the candidate aps. Accordingly, a gain of multi-user multiple input multiple output (mimo) can be increased, and an ap suitable for a terminal can be selected..

08/07/14
20140219213 

Method and transmitting downlink signal in a mimo wireless communication system


A method and apparatus for transmitting a downlink signal in a multiple input multiple output (mimo) wireless communication system is disclosed. A method for receiving a downlink signal from a base station to a user equipment in a multiple input multiple output (mimo) system, which supports dual layer transmission based on first and second antenna ports, comprises receiving downlink control information (dci) through a downlink control channel; and receiving downlink data through a downlink data channel, the downlink data including one or more of a first transport block and a second transport block, wherein the downlink control information includes a new data indicator (ndi) for each of the first and second transport blocks, and if the first transport block is disabled and the second transport block is enabled, the new data indicator for the first transport block indicates an antenna port through which the second transport block is received..

07/31/14
20140211873 

Method and reporting downlink channel state


A method of reporting a channel state to a base station supporting downlink multiple input multiple output (mimo) in a wireless communication system includes measuring a downlink channel based on a downlink signal received from the base station, and reporting a codebook index for precoding of the downlink signal according to the measurement of the downlink channel. In the case in which the ue receives channel state information (csi)-reference signal (rs) resources for n1 antenna ports, if a report for n2 (n1>n2) antenna ports is set, a codebook for the n2 antenna ports is configured as a subset of a codebook for the n1 antenna ports configured by the base station.

07/31/14
20140211707 

Method and device for allocating group identifier


Embodiments of the present invention discloses a method and a device for allocating a group identifier, which can allocate a non-conflict gid to a non-ap sta in an area covered by multiple bss networks, so that the problem of gid conflict which is occurred when allocating the gid for the non-ap sta can be reduced. A method provided by the embodiment of the present invention includes: dividing all group identifiers (gids) into n parts according to number of the gids, and respectively allocating the n parts to n basic service set (bss) networks, which communicate in a multi user-multiple input multiple output (mu-mimo) mode, where the n bss networks have a common area, n is a natural number which is bigger than 1..



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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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