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


Method for reporting downlink channel state and apparatus therefor

Codebook construction

Date/App# patent app List of recent Ebook-related patents
08/28/14
20140241452
 Method and apparatus for constructing codebook, and method, apparatus and system for precoding patent thumbnailnew patent Method and apparatus for constructing codebook, and method, apparatus and system for precoding
The present invention discloses a method and apparatus for constructing a codebook. The method comprises: receiving grouping information on a plurality of transmit antennas of a base station; obtaining a channel model for a channel between a mobile terminal and the base station; and determining an optimal precoding matrix corresponding to each antenna group according to the grouping information and the channel model, so as to construct a codebook used for precoding.
08/28/14
20140241450
 Codebook construction patent thumbnailnew patent Codebook construction
A method implemented in a base station used in a wireless communications system is disclosed. The method comprises having 1-layer, 2-layer, 3-layer, and 4-layer codebooks for 4 transmit antenna (4tx) transmission, each codebook including a plurality of precoding matrices, precoding data with one of the plurality of precoding matrices, and transmitting, to a user equipment, the precoded data, wherein each of the 1-layer and 2-layer codebooks comprises a first codebook and a second codebook, and wherein each precoding matrix in the first codebook comprises a first index and a second index.
08/28/14
20140241449
 Codebook construction patent thumbnailnew patent Codebook construction
A method implemented in a base station used in a wireless communications system is disclosed. The method comprises having a codebook including a plurality of precoding matrices, precoding data with one of the plurality of precoding matrices, and transmitting, to a user equipment, the precoded data, wherein each precoding matrix w satisfies w=w(1)w(2), where first matrix w(1) is chosen from first codebook (1), and second matrix w(2) is chosen from a second codebook.
08/28/14
20140241190
 Method for reporting downlink channel state and apparatus therefor patent thumbnailnew patent Method for reporting downlink channel state and apparatus therefor
A method for reporting a channel state to a base station (bs) supporting downlink (dl) multiple-input multiple-output (mimo) in a wireless communication system includes measuring a dl channel based on a dl signal received from the bs, and reporting an index of a codebook for precoding of the dl signal according to the measured dl channel, wherein the codebook for precoding includes an integrated codebook having a dual structure including a codebook for a wideband and a codebook for a subband, and wherein the integrated codebook is determined depending on an index i1 of the codebook for the wideband and an index i2 of the codebook for the subband, and a structure or type of a codebook selectable using the index i2 varies according to the index i1.. .
08/21/14
20140235294
 Method and apparatus for providing phonebook using image in a portable terminal patent thumbnailMethod and apparatus for providing phonebook using image in a portable terminal
A method and apparatus for providing a phonebook using an image in a portable terminal are provided. The method includes recording contact information in metadata of an image, and performing a linkage function using the image having the contact information recorded therein..
08/14/14
20140229674
 Internal notebook microsd reader with read-only switch patent thumbnailInternal notebook microsd reader with read-only switch
A computing device can include a connector to connect with a removable storage device. A switch can control the connector to prevent in a first state and allow in a second state at least one of the writing and erasing of a removable storage device connected to the connector.
08/14/14
20140229328
 System and method of presenting and monetizing visual images patent thumbnailSystem and method of presenting and monetizing visual images
A device and method for displaying and monetizing photo and video images shared on social media services, comprising a display means and a user interface that enables the user to display photo streams from social media services such as facebook or instagram, “like” photos shown on the screen, and purchase items or services associated with the photo or video being displayed. The device preferably offers a simple hardware button for “liking” a photo..
08/14/14
20140226848
 Removable speaker structure for electronic device patent thumbnailRemovable speaker structure for electronic device
The present invention provides a removable speaker structure for electronic device, which uses the space for the optical disk drives in electronic devices such as notebook computers or in docking stations. After removing the optical disk drive, the removable speaker can be placed.
08/14/14
20140226735
 Systems and methods for hsdpa multi-user mimo operation patent thumbnailSystems and methods for hsdpa multi-user mimo operation
Methods and systems for enabling mu-mimo functions on a ue are disclosed. A precoder codebook with precoding matrices can be generated to assist in improving system throughput.
08/14/14
20140226702
 4tx codebook enhancement in lte patent thumbnail4tx codebook enhancement in lte
Channel state information (csi) feedback in a wireless communication system is disclosed. A precoding matrix is generated for multi-antenna transmission based on precoding matrix indicator (pmi) feedback, wherein the pmi indicates a choice of precoding matrix derived from a matrix multiplication of two matrices from a first codebook and a second codebook.
08/14/14
20140226611
Method and apparatus for channel information feedback in a wireless communication system
Provided are a method and apparatus for channel information feedback in a wireless communication system. A terminal may receive csi-rs configuration information from a base station and generate channel information using a codebook determined in accordance with the number of csi-rs patterns set by the csi-rs configuration information.
08/14/14
20140226276
Notebook-type computer with open and angle adjustment function, and mouse apparatus for the same
The present invention relates to a notebook computer provided with a function of opening and closing a monitor and adjusting an angle of the monitor, and a mouse apparatus therefor. In a notebook computer including a monitor, a main body and a rotation power providing hinge unit for adjusting an angle of the monitor with respect to the main body, the notebook computer includes: an automatic open and close button formed on a rear side of an area implementing a screen of the monitor; and a monitor open and close control module formed on system memory of the main body, transmitting the angle control command to the rotation power providing hinge unit so that a standard angle or a log angle may be formed between the monitor and the main body..
08/07/14
20140222957
Java api for programming web real-time communication applications
The present invention provides a system and method for programming server-side real-time web communication applications. In an embodiment of the invention, a java application programming interface (api) is provided for web application developers to write java applications on a server to control, manage, and mediate html5 endpoints that communicate with the java applications.
08/07/14
20140219380
Method and apparatus for transmitting precoding martrix index and performing precoding
A method and an apparatus for sending a precoding matrix index (pmi) and performing precoding are provided in the embodiments of the present invention. The method for sending the pmi comprises the following steps: a user equipment acquires the transmission channel capability of carrying the pmi; according to the transmission channel capability of carrying the pmi, the precoding matrices are selected from a locally-stored first codebook set to form a second codebook set; a first precoding matrix is selected from the second codebook set; an index corresponding to the first precoding matrix is sent to a base station over the transmission channel so as to make the base station can find out the first precoding matrix according to the index and precode the data according to the first precoding matrix.
08/07/14
20140219379
Precoding selection for retransmission in uplink mimo hybrid arq
A method implemented in a user terminal is disclosed. The method comprises obtaining known precoding matrix p of rank r and modulation and coding scheme assignments used in an original transmission, and a desired retransmission rank r′, forming an approximate channel covariance matrix, estimating a minimum mean square error receiver sinr for each layer to be retransmitted responsive to said forming, and finding a retransmission precoding matrix from a preceding codebook that maximizes a sum-rate for enabling precoding selections for retransmissions in uplink multiple-input multiple-output mimo hybrid automatic repeat request harq.
08/07/14
20140219375
Method and device for feeding back channel information
Disclosed are a method and device for feeding back channel state information. The method includes: generating a first codebook by using the number of antennae in each row of a planar antenna array; generating a second codebook by using the number of columns of the planar antenna array; and feeding back the channel state information by using the first codebook and the second codebook.
08/07/14
20140219219
Downlink 8 tx codebook sub-sampling for csi feedback
This invention is codebook sub-sampling of the reporting of ri, cqi, w1 and w2. If csi mode 1 is selected ri and w1 are jointly encoded using codebook sub-sampling in report 1.
08/07/14
20140219218
Downlink 8 tx codebook sub-sampling for csi feedback
This invention is codebook sub-sampling of the reporting of ri, cqi, w1 and w2. If csi mode 1 is selected ri and w1 are jointly encoded using codebook sub-sampling in report 1.
08/07/14
20140218860
Fan controlling method and notebook thereof
The fan controlling method comprises following steps: firstly, a current rotation speed of a fan is obtained. Next, whether the current rotation speed is not greater than an expected rotation speed corresponding to the first type is determined.
08/07/14
20140218286
Last screen rendering for electronic book reader
A handheld dedicated electronic book (“ebook”) reader device and last screen rendering techniques for enhancing user experience are described. The ebook reader device detects certain screen conversion events, such as a timeout period, a scheduled event, or an event derived from user behavior.
08/07/14
20140217862
Encasements for an electronic device having a biometric scanner
This disclosure relates generally to an apparatus for retaining an electronic device as well as for methods for using the device for the purpose of doing the same. In various instances, the electronic device includes a housing including top and bottom members, and having a membrane region configured to facilitate interaction with a biometric scanner on the electronic device.
07/31/14
20140214485
Disaster mitigation and recovery system and method
A computer-based system where mobile computing devices, including, but not limited to, cell phones, smart phones, tablet computers, netbook and notebook computers, and laptop computers, are used in the field to map and record individual damage assessments of a possible disaster area. Gps technology may be used in conjunction with local databases and mapping programs to map specific locations and associate location data with assessments.
07/31/14
20140214413
Systems, methods, apparatus, and computer-readable media for adaptive formant sharpening in linear prediction coding
A method of processing an audio signal includes determining an average signal-to-noise ratio for the audio signal over time. The method includes, based on the determined average signal-to-noise ratio, a formant-sharpening factor is determined.
07/31/14
20140212112
Contact video generation system
A system and method for generation of video relevant to the subject of a contact record in a mobile device phonebook or contacts list. The method may include aggregating a plurality of data files originating from at least one data source, where at least some of the data bears a relationship to the subject of the contact record.
07/31/14
20140211874
System and method for channel information feedback in a wireless communications system
A system and method for channel information feedback in a wireless communications system is provided. A method for communications device operation includes receiving a pilot transmitted by a controller, computing a channel estimate for a channel between the controller and a communications device, the computing based on the pilot, computing a channel correlation matrix for the channel based on the channel estimate, and transmitting a reduced rank representation of the channel correlation matrix to the controller as a first feedback information.
07/31/14
20140211873
Method and apparatus for 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
20140210965
Method for securing visual media utilizing encoding process with optical translation for decoded image viewing
A method and system for securing visual media utilizing an encoding process with optical translation for decoded image viewing having the steps of displaying a first image for viewing by a user, generating a second image that is substantially a negative of the first image, displaying the first and second image through a stereoscopic projection system using at least two separate channels of the system to create a displayed garbled image decoding the displayed image by cancellation of the second image from the view of said user. The system may also employ active and passive 3d glasses or other decoder and generate interference and other signals to obscure the desired image before decoding.
07/31/14
20140210773
Touch bar and mobile terminal apparatus
Embodiments of the present invention disclose a touch bar and a mobile terminal apparatus. An interface module of the touch bar is connected to a touch panel; the interface module is connected in a matching manner to an interface on the mobile terminal; the touch panel is configured to sense a touch operation, generate a corresponding sensing signal, and transmit it to a processor in the mobile terminal by using the interface module, so that the processor controls the mobile terminal according to the sensing signal and content currently displayed on a display interface of the mobile terminal.
07/31/14
20140209771
Mouse pad
A mouse pad includes a supporting plate and a heat-conduction cover mounted on the supporting plate. The supporting plate defines a number of airflow channels communicating with air outlets of a notebook computer..
07/24/14
20140205038
Terminal device, base station device, program, and integrated circuit
In a cellular system, new precoding that enables the performance of precoding to be adequately utilized is introduced, and thereby throughput is increased. There is provided a terminal device that includes a plurality of transmit antennas and that performs precoding on a transmit signal.
07/24/14
20140205031
Finding channel state information with reduced codebook in a multi-antenna wireless communication system
Multiple antennas employed at the transmitter and receiver can significantly increase a mimo system capacity, especially when channel knowledge is available at the transmitter. Channel state information may be provided to the transmitter by the receiver in a codebook based precoding feedback.
07/24/14
20140204855
Method of transmitting feedback message in wireless communication system
A method of transmitting a feedback message in wireless communication system is provided. The method includes selecting n best subbands of m subbands according to cqi, where both m and n are a natural number and m is larger than n, generating multiple input multiple output (mimo) information comprising n codebook indexes and n differential cqis and transmitting the feedback message comprising the mimo information..
07/24/14
20140203665
Liquid activated failsafe for portable computing devices
The described embodiments relate generally to portable computing devices such as notebook computers and more particularly to failsafe mechanisms designed to prevent electrical shorts in the event that a portable computing device comes in contact with a liquid. A plurality of liquid sensors can be positioned within a computing device and electrically coupled to a controller.
07/17/14
20140201853
Subsystem authenticity and integrity verification (saiv)
Systems and methods are disclosed for enhancing anti-terrorism public safety measures, by more securely determining whether explosives or other contraband have been inserted into notebook computer batteries or other large, replaceable subsystems of electronic devices. Because notebook computers typically require large, heavy batteries, they present attractive containers for smugglers and terrorists attempting to bring explosives onto an airplane.
07/17/14
20140201785
Method and apparatus for alternate content scheduling on mobile devices
Alternate digital content is inserted into mobile devices with a method and apparatus that comprises an alternate content scheduler, an alternate content reporter, and a micro-splicer. The alternate content scheduler further comprises a mobile network interface for interaction with a mobile data and broadcast network, a micro-splicer interface for interfacing with a micro-splicer, a rulebook that is shared with the network which provides the rules for alternate content scheduling, a preference provisioning module comprising an alternate content scheduler library for storing user or network preferences, a scheduler for providing tight synchronization between original program content and alternate content, and a metric recording interface to an alternate content reporter.
07/17/14
20140199977
System and method for transmitting and receiving an event message
A system for transmitting and receiving an event message is provided. The system comprises a transmitting terminal that generates an event message, and that transmits the event message and caller information, an event message service server that stores phonebook data after receiving the phonebook data transmitted from at least one terminal, that searches for a receiving terminal including the caller information in the phonebook data among receiving terminals included in the phonebook data of the transmitting terminal when receiving the event message, and that transmits the event message to the searched receiving terminal, and a receiving terminal that receives an event message transmitted by the event message service server, and informs its user of reception of the event message..
07/17/14
20140198870
Feedback scheduling to reduce feedback rates in mimo systems
In a closed-loop wireless communication system, a codebook-based feedback control mechanism is provided where feedback from each of a plurality of receivers is scheduled to control the feedback so that the receiving devices do not needlessly feed back precoding information to the transmitting device. The feedback may be controlled by establishing and distributing a schedule to control when each receiver feeds back precoding information, or by establishing and distributing a metric-based feedback threshold that must be satisfied before feedback is permitted..
07/17/14
20140198869
Precoding codebooks for 4tx and 8tx mimo communication systems
A method for communication includes configuring a communication system that includes a transmitter and a receiver with first precoding matrices for mapping up to n data streams onto n transmit antenna ports of the transmitter. Each of at least some of the first precoding matrices are derived from respective second and third precoding matrices.
07/17/14
20140198868
Dl mimo precoding enhancement
A method includes applying a precoder to information to be transmitted on n antenna ports, wherein application of the precoder creates an m-tx codebook, each codeword of which is obtained through truncation of a codeword from an n-tx codebook corresponding to the n antenna ports. The precoded information is transmitted on the n antenna ports to a ue and information allowing an n-tx codeword to be selected from the n-tx codebook is received.


Popular terms: [SEARCH]

Ebook topics: Communications, Tablet Computer, Electronic Device, Precoding Matrix, Smart Phone, Communication System, Beamforming, Automatic Repeat Request, Carrier Aggregation, Sounding Reference Signal, Wireless Communication Device, Cell Phone, Impact Strength, Portable Computer, Antenna Array

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