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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


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

Pantech

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

System and method for a scale-invariant symbol demodulator

Futurewei Technologies

System and method for a scale-invariant symbol demodulator

Date/App# patent app List of recent Multiple Input Multiple Output-related patents
05/28/15
20150146812
 Uplink multi-user multiple input multiple output beamforming patent thumbnailnew patent Uplink 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 patent thumbnailnew patent 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 patent thumbnailnew patent 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 patent thumbnailnew patent 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 patent thumbnailnew patent 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 patent thumbnailTransmitter 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 patent thumbnailMethods 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 patent thumbnailSystems 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 patent thumbnailChannel 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 patent thumbnailRadio 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.


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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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