Follow us on Twitter
twitter icon@FreshPatents


Cognitive Radio patents

      

This page is updated frequently with new Cognitive Radio-related patent applications.




 Systems and methods for detecting unused communication spectrum patent thumbnailSystems and methods for detecting unused communication spectrum
Systems and methods for cognitive radio spectrum sensing of a signal are disclosed herein. On exemplary method comprises applying a pre-defined cyclostationary feature to detect the presence of the signal; detecting the signal; detecting a spectrum associated with the signal; sampling randomly the detected signal from its cyclic frequency domain; and applying a compressive sensing algorithm to classify the signal based on the cyclostationary feature.
The Board Of Trustees Of The University Of Alabama


 Power allocation optimization under constraints of throughput requirements and interference limit for cognitive radio networks patent thumbnailPower allocation optimization under constraints of throughput requirements and interference limit for cognitive radio networks
The present invention provides a method of power control for a plurality of secondary users (sus), or unlicensed users, in a cognitive radio network having a plurality of primary users (pus), or licensed users. The method comprises determining an optimal power level for each of the sus such that a total throughput of all the sus is maximized while satisfying an individual throughput requirement of each su and an interference limit constraint of the pus.
Macau University Of Science And Technology


 Method and device for configuring cognitive radio system spectrum resources patent thumbnailMethod and device for configuring cognitive radio system spectrum resources
A method and device for configuring cognitive radio system spectrum resources, relates to the field of wireless communication and solves the problem that the existing resource configuration mode influences system stability. The method includes: receiving, by a reconfiguration management node, idle spectrum resource request information transmitted by secondary user equipment, wherein the idle spectrum resource request information indicates a demand of the secondary user equipment for idle spectrum resources; and performing, by the reconfiguration management node, an idle spectrum resource configuration decision for the secondary user equipment according to current idle spectrum resource information and historical configuration information of the idle spectrum resources of the secondary user equipment.
Zte Corporation


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


 Cognitive radio system, resource allocation apparatus thereof and method therefor patent thumbnailCognitive radio system, resource allocation apparatus thereof and method therefor
Disclosed is a cognitive radio system, resource allocation apparatus thereof and method therefor. A resource allocation apparatus comprises: a transmission opportunity assessment device which is used to assess availabilities of transmission opportunities in radio resources of a primary communication system; a vector production device which is used to set a transmission opportunity selection vector for each secondary user in the cognitive radio system based on assessment results of the availabilities of transmission opportunities, wherein the transmission opportunity selection vector includes information for identifying multiple transmission opportunities assessed available; and a sending device which is used to distribute the transmission opportunity selection vector to the secondary user..
Sony Corporation


 Spectrum-efficient secondary users grouping  two-tier cognitive radio networks patent thumbnailSpectrum-efficient secondary users grouping two-tier cognitive radio networks
The spectrum-efficient secondary users grouping method for two-tier cognitive radio groups femtocell base stations (fbss) and macrocell secondary users (msus) into non-interfering groups based on their gps location information, and then serves the fbss/msus within each group using the same channel. A first approach for grouping the secondary users (sus) is distance-based.
King Fahd University Of Petroleum And Minerals


 Electronic device, method and computer-readable medium for sensing spectrum usage in a cognitive radio communication system patent thumbnailElectronic device, method and computer-readable medium for sensing spectrum usage in a cognitive radio communication system
The disclosure provides an electronic device, a method and computer-readable medium. The electronic device includes a circuitry.
Tsinghua University


 Method and  transmitting channel information in cognitive radio network and  performing channel switching patent thumbnailMethod and transmitting channel information in cognitive radio network and performing channel switching
A method and apparatus for transmitting channel information used by a station form among tv white space channels, and a method and apparatus for performing channel switching are disclosed. A method for transmitting information of a channel used by a station from among tv white space channels includes determining one or more channels used by the station from among channels contained in a plurality of ofdm blocks, wherein each ofdm block includes one or more contiguous channels from among the tv white space channels, generating a message including first information indicating the lowest channel number from among channels contained in a first ofdm block from among the plurality of ofdm blocks, second information indicating the lowest channel number from among channels contained in a second ofdm block, third information indicating the one or more channels used by the station as bitmap information, and fourth information indicating a total amount of bandwidth used by the station, and transmitting the generated message..
Snu R&db Foundation


 Method and procedure for communication between databases or spectrum management functions patent thumbnailMethod and procedure for communication between databases or spectrum management functions
Methods and apparatuses are described herein for providing a victim database discovery procedure. The victim database discovery procedure may be guided by an initial list of potential victim databases that may be defined by physical properties such as the geographic or regional relationships of the areas that may be protected by each database.
Interdigital Patent Holdings, Inc.


 Cognitive radio antenna assembly patent thumbnailCognitive radio antenna assembly
The cognitive radio antenna assembly includes two boards, a main board that has an ultra-wideband antenna (uwb) and also serves as a ground plane for the reconfigurable antenna, and an elevated mimo board having two planar inverted-f antennas (pifas) that are reconfigurable to selectively operate on different frequency bands. Each pifa has a radiating patch having a slot bridged by pin diodes and dc blocking capacitors on opposite sides of the slot.
King Fahd University Of Petroleum And Minerals


Method and wideband spectrum sensing

Examples of wideband spectrum sensing techniques for cognitive radio are provided. The techniques permit undersampling (e.g., sub-nyquist sampling) the spectrum band, which permits use of more cost effective electronic components (e.g., lower frequency analog-to-digital converters (adc)).

Enterprise cognitive radio integrated with laser communications

A wireless data access system is provided to ameliorate bursty traffic occurring in a radio communications link such as a wifi, wimax, 3g or cellular telephone link to a wireless network access device. A data traffic event is detected relating to traffic in the link.
At&t Intellectual Property Ii, L.p.

Coordination of silent periods for dynamic spectrum manager (dsm)

A method for use in a dynamic spectrum manager (dsm) for coordinating asynchronous silent periods in a network, the method comprising detecting a primary user in the network, transmitting a silent period start control message to one or more cognitive radio (cr) nodes in the network, wherein the message indicates the start and duration of a silent period and initiates spectrum sensing, receiving a measurement report control message from the one or more cr nodes in the network indicating results of spectrum sensing, and transmitting a message to the one or more cr nodes, wherein the message instructs the one or more cr nodes to move to a different frequency based on the spectrum sensing results.. .
Interdigital Patent Holdings, Inc.

Method and system for utilizing spectrum data in a cognitive wireless access system

The invention relates to a cognitive wireless communication system where a wireless terminal is allowed to utilize in channel selection process both licenced bands and unlicensed bands that are available. The invention relates also to a method and computer program for allocating a transmission channel for a wireless terminal either from licenced or unlicensed bands in a cognitive radio system by a resource management server.
Teknolgian Tutkimuskeskus Vtt Oy

Authentication and authorization of cognitive radio devices

A method of authentication and authorization of cognitive radio devices comprises generating a registration request message; sending the registration request to a spectrum manager; receiving a registration response message from the spectrum manager; generating an authorization request message; upon receiving of an authorization response message, generating a verification response message; and sending the verification response message to the cognitive radio device to be authenticated, such that the cognitive radio device is authenticated and authorized to communicate on channels designated in the verification response message.. .
Koninklijke Philips N.v.

A improving spectrum sensing and efficiency in cognitive wireless systems

Systems and methods for adaptive method exploits self-interference suppression (sis) and full-duplex (fd) capabilities in cognitive radio and dynamic spectrum access (dsa) systems to enable simultaneous transmission-and-sensing (ts) or transmission-and-reception (tr) over the same frequency channel in a single operation. The adaptive methods enable secondary users or units (sus) to switch between different modes of operation, taking into account the primary units (pus) state, the sus' traffic, and standards' rules.
The Arizona Board Of Regents On Behalf Of The University Of Arizona

Communication system

There is a cognitive radio system provided including a master node (3) and a plurality of mobile terminals (5a˜5e). The master node (3) includes receiving unit for receiving, from a plurality of sensor nodes, detection information indicating whether or not the sensor node has sensed a primary user transmission; obtaining unit (342) for obtaining, for each sensor node, a measure of a signal to noise ratio, snr, of secondary user signals received at the sensor node; checking unit (345) for checking reliability of the detection information received from the plurality of sensor nodes using the obtained snr measure for the corresponding sensor node; and decision unit (347) for deciding if a primary user is transmitting using a subset of the received detection information that has been determined to be reliable by the checking unit (345)..
Nec Corporation

Collaborative spectrum sensing in cognitive radio network

A method and system for collaborative spectrum sensing in a cognitive radio network is provided. The method may include: receiving through a cognitive radio network a plurality of sensing results of availability of a channel, where the plurality of sensing results are generated by a corresponding number of vehicles within the cognitive radio network, respectively, where broadcasting of the plurality of sensing results is controlled based on positions of vehicles within the cognitive radio network; and determining whether the channel is available based on the plurality of sensing results.
Harman International Industries, Inc.

Cognitive radio achieving ad hoc interference multiple access wireless communication

In a radio network having a plurality of first users on channel (fuocs) and one or more second users on channel (suocs), a method and apparatus for a suoc to select a channel to co-occupy based in part upon the expected impact on the fuoc. The fuoc collects signal parameters associated with the fuoc, such as actual rate, bandwidth, received signal power, and noise power, and uses the signal parameters to calculate the expected impact.
Massachusetts Institute Of Technology

System and managing wireless frequency usage

Systems and methods for managing spectrum handoff with multimedia transmissions over cognitive radio networks are disclosed. The methods may include, for example, determining when a primary user is inactive on the one or more frequencies.
Board Of Trustees Of The University Of Alabama

Wireless communication device and sensing method

A wireless communication device which includes: a sensing antenna for sensing communication by a primary user; a first transmission antenna; a second transmission antenna; first transmitting unit that generates a transmission signal to be transmitted from the first transmission antenna; second transmitting unit that generates a transmission signal to be transmitted from the second transmission antenna and that cancels, in the sensing antenna, a transmission signal from the first transmission antenna; digital signal processing unit that suppresses the transmission signal from the first transmission antenna, from a received signal of the sensing antenna; and sensing unit that detects communication by a primary user on the basis of the received signal of the sensing antenna that has been processed by the digital signal processing unit. While performing communication as a secondary user, the device detects communication by a primary user.
Toyota Infotechnology Center Co., Ltd.

Systems and methods for a cognitive radio having adaptable characteristics

Systems and methods for configuring a network of radios for dynamic spectrum access are described. A network radio can include hardware and/or software modules for detecting a radio environment and negotiating common communications channels with a plurality of other radios in the network.

Cognitive radio achieving ad hoc interference multiple access wireless communication

An suoc radio employs: (1) spectrum sensing and parameter estimation methods to characterize potential fuocs; (2) a rate pair prediction tool to guide it's choice of fuoc to target along with the appropriate rate pair (suoc and fuoc achievable rates); (3) machine learning methods to automatically and on the fly advantage experience/history; (4) a decision maker with multiple possible procedures that govern steps of interaction; (5) multiuser detection receiver to deal with the interference once information-bearing transmission has commenced by the suoc radios. (6) a radio capable of full transmit-processing chain to accomplish modulation and full receive-processing chain to accomplish demodulation, as well as other radio functions necessary for successful wireless communications such as medium access control, networking and other functions..
Massachusetts Institute Of Technology

System and optimizing channel characteristics when initializing links between cognitive radios in a shared spectrum environment

Systems and methods to facilitate acquisition of specific operating parameters by a spoke radio device via a hub radio device while the hub radio device operates using specific operating parameters and the spoke radio device operates using generic operating parameters. The spoke radio device may acquire the generic operating parameters from a beacon broadcast by the hub radio device.
Spectrum Bridge, Inc.

Method and bandwidth allocation for cognitive radio networks

Described herein are methods, metrics and apparatus for bandwidth allocation for cognitive radio. Information that needs to be passed between different components of a dynamic spectrum management (dsm) system for dynamic bandwidth allocation along with the corresponding interfaces is identified.
Interdigital Patent Holdings, Inc.

Dynamic radio frequency mapping

An intelligent cognitive radio system is disclosed that acquires information about its environment to make operational decisions. Dynamic radio frequency mapping provides estimates of rf power levels over an area where spectrum activity or changes in the environment may be transient.
The Arizona Board Of Regents On Behalf Of The University Of Arizona

Cooperative modulation of classification in cognitive radio networks

Multiuser classification of the modulation schemes of simultaneous multiple unknown transmitters is disclosed. Cooperation among multiple cognitive radio receivers for modulation classification offers improvements in classification performance and overcomes detrimental channel effects that degrade single cognitive radio classifier performance.
The Arizona Board Of Regents On Behalf Of The University Of Arizona

Method and controlling handover in cognitive radio system

A method and apparatus for controlling a handover in a cognitive radio system are used to control a cell handover process of a user equipment, and can hand over the user equipment to an appropriate target cell as far as possible. The method includes: a source base station receiving a measurement report send by a user equipment; the source base station controlling a handover of the user equipment according to the measurement report, radio resource management information, and reconfiguration related information.
Zte Corporation

Method and system for optimizing asset allocation in a cognitive radio configuration

A method and system are provided for optimizing asset allocation in a cognitive radio configuration, the method comprising obtaining, in a digital computer, an indication of the cognitive radio configuration; converting the indication of the cognitive radio configuration into a degree 2 polynomial; providing the degree 2 polynomial to a quadratic programming machine; solving the degree 2 polynomial using the quadratic programming machine to generate binary solutions; the digital computer receiving the generated binary solutions and generating an asset allocation for the cognitive radio configuration and providing the generated asset allocation for the cognitive radio configuration.. .
1qb Information Technologies Inc.

Method of allocating radio resources and apparatus of allocating radio resources in cognitive radio small-cell networks

Disclosed is a method of allocating radio resources, including: acquiring available channel information of a cognitive radio small cell; analyzing a channel characteristic based on the available channel information and dividing a required transmission rate of the cognitive radio small cell into required transmission rates for each available channel; and performing a power control for each available channel based on the divided required transmission rates for each available channel. The method of allocating radio resources may be performed under an interference environment in which a plurality of cognitive radio small cells is present and the plurality of cognitive radio small cells shares an available channel..
Electronics And Telecommunications Research Institute

System and mitigating interference when initializing links between cognitive radios

Generic access credentials for use by a spoke radio device in communications with a hub radio device to acquire specific access credentials for the spoke radio device are determined by a spectrum management server to minimize the possibility of creating undesirable interference to other radio systems. The spectrum management server determines a coverage area of the hub radio device and determines sub-regions of the coverage area; determines a generic access transmit power limit for each sub-region of the coverage area for one or more channels on which the hub radio device has access rights to engage in wireless communications; and transmits the generic access transmit power level for each sub-region and channel combination to the hub radio device..
Spectrum Bridge, Inc.

Method and system for performing initial ranging in cognitive radio network

Disclosed herein are a method and a system for performing initial ranging in a cognitive radio network the method for performing initial ranging in a cognitive radio network includes: detecting signals received in one or more ranging sections; estimating a tint time offset based on a correlation between subcarrier indices of the signals detected in the one or more ranging sections; estimating a second time offset based on correlations for the signals detected in the one or more ranging sections and a plurality of codes that are predetermined and detecting an initial ranging code among the plurality of codes; and estimating a time offset of a cpe performing initial ranging with the detected initial ranging code using the first time offset and the second time offset that are estimated.. .
Electronics And Telecommunications Research Institute

Distributed multi-channel cognitive mac protocol

A method includes sending a message from a first to at least one second cognitive radio apparatus to determine a channel to be used for sending data from the first to the second radio apparatus, the message sent over a first channel and comprising an advertisement of at least one second channel for use in sending the data from the first to the second radio apparatus, the advertisement comprising a corresponding proposition/evaluation bit for each second channel, receiving a reply from the second radio apparatus over the first channel, comprising an acceptance of one of the second channels with the corresponding proposition/evaluation bit, a rejection of the second channel and an advertisement of a third channel, or a rejection of the second channel without an advertisement of a third channel, and transmitting the data from the first to the second radio apparatus over an agreed upon second or third channel.. .
Core Wireless Licensing S.a.r.l.

Method and device for determining and assisting in determining back-up frequency in cognitive radio system

Disclosed are a method and device for determining and assisting in determining a back-up frequency in a cognitive radio system. A first cognitive system shares the wireless communication spectrum resources of an incumbent system, and the method thereof for determining a back-up frequency comprises: through a terminal, a first cognitive system obtaining a back-up frequency of a second cognitive system which has overlapping coverage in a target area in an overlapping coverage area; and according to the back-up frequency of the second cognitive system in the overlapping coverage area, selecting from the wireless communication spectrum resources at least one frequency as a back-up frequency in the target area.
China Academy Of Telecommunications Technology

Cooperative cognitive radio spectrum sensing using a hybrid data-decision method

A spectrum sensing method for cognitive radio to detect spectrum holes in an environment of bandwidth scarcity. The method comprises first receiving a wireless signal at a cognitive radio user, and then discovering the frequency edges of allocated frequency bands by using wavelet transform coefficients to detect discontinuities in the power spectral density of the received signal.
King Fahd University Of Petroleum And Minerals

Cognitive radio spectrum sensing with improved edge detection of frequency bands

A spectrum sensing method for cognitive radio wherein spectrum holes are detected in a wireless environment having spectrum scarcity. First, a cognitive radio user (cr) determines the power spectral density (psd) of a wideband signal and detects subbands within the wideband using wavelet transforms (wt).
King Fahd University Of Petroleum And Minerals

Method for defense against primary user emulation attacks in cognitive radio networks using advanced encryption

A method for defense against primary user emulation attacks in cognitive radio networks includes the steps of generating an advanced encryption standard (aes)-encrypted reference signal with a transmitter for transmitting to at least one receiver. The method also includes the steps of allowing a shared secret between the transmitter and the at least one receiver and regenerating the reference signal at the at least one receiver and using the regenerated reference signal to achieve accurate identification of authorized primary users as well as malicious users..
Board Of Trustees Of Michigan State University

Nc-ofdm for a cognitive radio

The present invention is directed to a cognitive radio device. The device includes a spectrum sensing portion configured to identify idle subcarrier blocks corresponding to non-contiguous channels within the plurality of predetermined channels, a mapping portion configured to encode a transmission message signal into a series of transmit frequency domain samples and map each of the transmit frequency domain samples into an idle subcarrier block, the mapping portion being configured to map each of the transmit frequency domain samples into an idle subcarrier block on a symbol-by-symbol basis, a transmit fourier transformer configured to transform the series of transmit frequency domain samples into a time domain signal corresponding to a transmit rf waveform, and a transmitter portion configured to upconvert the time domain signal and transmit the transmit rf waveform..
Src, Inc.

Method and device for spectrum sensing in cognitive radio system

The cognitive radio cell acquires a scheme dividing frequency band resources into a number of sub-bands and corresponding silent period time frequency pattern, when performing silence on the sub-band which the cognitive radio cell works on according to the silence period time position of each sub-band defined in the silent period time frequency pattern, spectrum sensing on corresponding sub-band is implemented by radio spectrum sensing system or cognitive radio cell.. .
China Academy Of Telecommunications Technology

Cognitive radio system, resource allocation apparatus thereof and method therefor

Disclosed is a cognitive radio system, resource allocation apparatus thereof and method therefor. A resource allocation apparatus comprises: a transmission opportunity assessment device which is used to assess availabilities of transmission opportunities in radio resources of a primary communication system; a vector production device which is used to set a transmission opportunity selection vector for each secondary user in the cognitive radio system based on assessment results of the availabilities of transmission opportunities, wherein the transmission opportunity selection vector includes information for identifying multiple transmission opportunities assessed available; and a sending device which is used to distribute the transmission opportunity selection vector to the secondary user..

Systems and methods for cognitive radio communications

Disclosed herein are techniques for granting access to a mobile device on a network. An access request is received from the mobile device.
Vringo Labs Llc

Method of scheduling spectrum sensing and allocating uplink radio resources in cognitive radio communication system

Provided are a method of scheduling spectrum sensing and a method of allocation uplink radio resource in a cognitive radio communication system. The method of scheduling spectrum sensing in a cognitive radio communication system includes classifying terminals in a cell into terminals affecting spectrum sensing and terminals not affecting spectrum sensing, and performing spectrum sensing when it is determined that uplink signals of other terminals do not affect spectrum sensing based on results of the classification..
Electronics And Telecommunications Research Institute

Base station, cognitive radio system, and control a neighbour relationship

Provided is a cognitive radio system crs, a base station and a method for controlling a neighbour relationship, including: a serving base station actively notifies a neighbour base station of transport layer configuration information after resource reconfiguration, the neighbour base station thus performs a maintenance operation on locally saved neighbour cell information of the serving base station, which can solve the problem that the change in the neighbour relationship affects terminal services.. .
Zte Corporation

Spectrum sensing cooperative cognitive radio network in non-gaussian noise environment, and fusion center apparatus and cooperative cognitive radio system using the same

Disclosed herein are a spectrum sensing apparatus and method for a cognitive radio (ccr) network in a non-gaussian noise environment and an fc apparatus and ccr system using the same. The cooperative cognitive radio (ccr) system includes m cognitive radios (crs), and a fusion center (fc).
Research & Business Foundation Sungkyunkwan University

Radio frequency spectrum management apparatus, method, system and secondary user apparatus

The present disclosure provides a radio frequency spectrum management apparatus, method, system and secondary user apparatus for a cognitive radio system comprising primary systems and secondary systems, the radio frequency spectrum management apparatus comprises circuitry configured to: acquire, according to position variation information of respective secondary user groups in the secondary systems, path loss information at the positions before and after the movement of respective secondary user groups respectively, wherein, the secondary user group comprises one or more secondary users; and determine an adjustment to the usage of frequency spectrums of the secondary users, according to the variation of the path loss information at the positions before and after the movement of respective secondary user groups. The present disclosure may at least improve the efficiency of adjusting the frequency spectrum resource..
Sony Corporation

Radio access reducing routing overhead in cognitive radio adhoc networks

A radio access method for use in a radio access device in cognitive radio ad-hoc networks, the radio access method comprising: comparing additional information about neighboring radio access devices, which exist in the cognitive radio ad-hoc networks, in a second layer of the radio access device with additional information about the neighboring radio access devices in a third layer of the radio access device in the cognitive radio ad-hoc networks; and generating a routing control message when the additional information of the second layer is different from the additional information of the third layer to broadcast the routing control message.. .
Electronics And Telecommunications Research Institute

Method for achieving rendezvous for cognitive radio networks

A method for achieving rendezvous in a multiple access network having two or more access channels includes the steps of generating channel access sequences in rounds for each user of the multiple access network, wherein each round includes at least one jump-pattern and at least one stay-pattern, performing the at least one jump-pattern alternated by the at least one stay-pattern in each round, and whereupon the at least one jump-pattern alternated by the stay-pattern in each round are performed, continuously generate at least one channel access sequence rounds and perform the jump-pattern of the channel access sequence rounds until a user in the network achieves rendezvous with its intended neighbour user or users.. .
Hong Kong Baptist University

Method and device for managing backup channels for cognitive radio communication

Provided is an apparatus and method for managing a backup channel for cognitive radio communication that may group at least one device included in a cell served by a base station, and allocate backup channels for cognitive radio communication to the groups, based on location information and mobility of the groups.. .
Electronics And Telecommunications Research Institute



Cognitive Radio topics:
  • Cognitive Radio
  • Communications
  • Fourier Transform
  • Communication System
  • Coverage Area
  • Allocation
  • Base Station
  • Mobile Terminal
  • Physical Layer
  • Telecommunications
  • Telecommunication
  • Transmitter
  • Radio Signal
  • Access Point
  • Machine Learning


  • Follow us on Twitter
    twitter icon@FreshPatents

    ###

    This listing is a sample listing of patent applications related to Cognitive Radio for is only meant as a recent sample of applications filed, not a comprehensive history. There may be associated servicemarks and trademarks related to these patents. Please check with patent attorney if you need further assistance or plan to use for business purposes. This patent data is also published to the public by the USPTO and available for free on their website. Note that there may be alternative spellings for Cognitive Radio with additional patents listed. Browse our RSS directory or Search for other possible listings.


    0.5284

    file did exist - 2445

    2 - 1 - 48