Optimum Frequency Selection Patents (Class 455/62)
  • Patent number: 10277262
    Abstract: A communication module includes a first input terminal to which a first signal of a first frequency band is input, a second input terminal to which a second signal of a second frequency band is input, an amplifier that outputs an amplified signal which is obtained by amplifying the first signal, a diplexer that receives the amplified signal and/or the second signal and that outputs an output signal of the first and/or second frequency band, and a harmonic termination circuit that short-circuits a harmonic of the second signal. The harmonic termination circuit has an end connected between the second input terminal and the diplexer, and another end grounded at a ground position. A distance in plan view between the first input terminal and the ground position of the harmonic termination circuit is longer than a distance in plan view between the first input terminal and the second input terminal.
    Type: Grant
    Filed: October 11, 2017
    Date of Patent: April 30, 2019
    Assignee: MURATA MANUFACTURING CO., LTD.
    Inventor: Ken Kishimoto
  • Patent number: 10237003
    Abstract: Provided is a channel communication quality estimating method of a wireless communication technology. A method for estimating a channel communication quality of a second wireless communication technology whose frequency band entirely or partially overlaps a frequency band of a first wireless communication technology includes: transmitting predetermined data to an external device through each of a plurality of first channels which forms a frequency band of the first wireless communication technology; generating a channel map which represents a communication quality for each of the plurality of first channels based on a data transmission result through each of the plurality of first channels; and calculating a communication quality index for each of a plurality of second channels which forms a frequency band of the second wireless communication technology, based on the channel map.
    Type: Grant
    Filed: January 11, 2017
    Date of Patent: March 19, 2019
    Assignee: Korea University Research and Business Foundation
    Inventors: Hwangnam Kim, Woonghee Lee
  • Patent number: 10194328
    Abstract: Generation and use of geographic databases of frequency spectral information within an operating frequency band. Described herein are methods of making databases of geospectral information and using these databases to optimize performance of wireless networks. For example, a network of wireless radio devices that monitor the frequency spectrum of the operating frequency band may provide this geographically marked information to a central database to create a database of geospectral frequency information. This geospectral frequency information may be used to characterize, optimize or modify a network of wireless radio device, or to modify an individual wireless radio device.
    Type: Grant
    Filed: November 11, 2015
    Date of Patent: January 29, 2019
    Assignee: Ubiquiti Networks, Inc.
    Inventors: Sriram Dayanandan, Vish Ponnampalam
  • Patent number: 10182344
    Abstract: Embodiments are directed towards collecting information regarding the implementation of dynamic frequency selection and automatic channel selection by one or more wireless communication devices using the U-NII radio band. And to use the collected information to determine if other communication devices are coupled to communicate with each other via a wireless connection or a wired connection, or to modify the automatic channel selection mechanism used by one or more wireless communication devices.
    Type: Grant
    Filed: December 21, 2017
    Date of Patent: January 15, 2019
    Assignee: DISH Technologies L.L.C.
    Inventors: Francis Nafe, Christopher William Bruhn
  • Patent number: 10164619
    Abstract: A method of controlling a clock frequency of an electronic device and an electronic device using the same is provided. The electronic device includes a check module that is configured to check a clock frequency of at least one Radio Frequency (RF) band, and a control module that is configured to shift a clock frequency of a high speed signal such that a noise generation clock frequency and the clock frequency of the at least one RF band checked by the check module are not identical, when an interface of the high speed signal is used.
    Type: Grant
    Filed: October 13, 2015
    Date of Patent: December 25, 2018
    Assignee: Samsung Electronics Co., Ltd
    Inventor: Eun-Seok Hong
  • Patent number: 10149323
    Abstract: A base station including: a memory, and a processor configured to: determine whether each random access signal is detected or not by comparing each of specified characteristics of each of radio resources prepared for each random access signal with a detection threshold, each of the specified characteristics relating to each reception power of each of the radio resources prepared for each random access signal, the radio resources being divided into first radio resources and second radio resources, the first radio resource being prepared for dedicated random access signals each transmitted from each terminal in response to each request signal transmitted from the base station, and determine the detection threshold based on each of the specified characteristics of each of unused first radio resources, each of the unused first radio resource being each of the first radio resources for which each request signal has not been transmitted from the base station.
    Type: Grant
    Filed: December 15, 2015
    Date of Patent: December 4, 2018
    Assignee: Fujitsu Limited
    Inventor: Takato Ezaki
  • Patent number: 10136330
    Abstract: Described features are directed to staggered frequency channel changing for cells of spectrum sharing networks. In some examples users communicating on one or more frequency channels of a spectrum sharing network may receive an indication that those channels are to be vacated, for example that the frequency channels are not to be transmitted on, or otherwise used for communications. Cells of the spectrum sharing network may receive the indication and perform staggered (e.g., sequential or randomly-timed) channel changes. The staggered channel changes may facilitate handover of user devices of the spectrum sharing network by, for example, reducing a number of cells that are simultaneously undergoing a channel change procedure. Thus, staggered frequency channel changing may reduce user service interruptions and radio link failures in a spectrum sharing network.
    Type: Grant
    Filed: August 9, 2016
    Date of Patent: November 20, 2018
    Assignee: QUALCOMM Incorporated
    Inventors: Puneet Sethi, Farhad Meshkati, Mehmet Yavuz
  • Patent number: 10122511
    Abstract: Systems and methods for automatically configuring a distributed antenna system are provided. A configuration sub-system of the distributed antenna system can identify signal parameters for downlink signals received from one or more base stations via inputs of a unit in the distributed antenna system. The configuration sub-system can automatically determine a configuration plan for the distributed antenna system based on the automatically identified signal parameters. The configuration plan specifies how to combine subsets of the downlink signals for routing to remote antenna units of the distributed antenna system.
    Type: Grant
    Filed: August 17, 2017
    Date of Patent: November 6, 2018
    Assignee: CommScope Technologies LLC
    Inventors: Van E. Hanson, Michael J. Williamson
  • Patent number: 10071605
    Abstract: A specific multi-band antenna impedance matching circuit and a tire-pressure monitoring device using same are disclosed. The antenna impedance matching circuit includes at least one first, one second and one third inductance unit and at least one first, one second and one third capacitance unit. The first capacitance unit is connected at a first end to first ends of the first and the second inductance unit and at a second end to a ground; the second inductance unit and the second capacitance unit are connected in series; the third inductance unit and the third capacitance unit are connected in parallel; and the third inductance unit is connected at a first end to a first end of the second capacitance unit and at a second end to the ground.
    Type: Grant
    Filed: July 20, 2017
    Date of Patent: September 11, 2018
    Assignee: KEYCORE TECHNOLOGY CORP.
    Inventors: Yang-Te Liang, Po-Wei Chiu, Sheng-Ruei Hsu, Wei-Cheng Lin, Chien-Jen Hsiao, Shih-Hsiu Tseng
  • Patent number: 10051556
    Abstract: Disclosed is a method for scanning for an access point. An active scan method comprises the steps of: generating a probe request frame including information on the signal strength of a terminal; and transmitting the probe request frame to an access point. Thus, a waste of time and radio resources can be prevented.
    Type: Grant
    Filed: June 9, 2017
    Date of Patent: August 14, 2018
    Assignee: KT Corporation
    Inventors: Byung Wan Yoon, Su Hwan Rim
  • Patent number: 10028256
    Abstract: [Object] To allow a wireless communication system to more appropriately use a frequency band to be shared between wireless communication of the wireless communication system and another wireless communication. [Solution] Provided is an apparatus including: an acquiring unit configured to acquire information regarding another wireless communication performed by a wireless communication apparatus using a frequency band to be shared between wireless communication of a wireless communication system and the another wireless communication, the information being provided by the wireless communication apparatus; and a control unit configured to determine an additional band available for the wireless communication of the wireless communication system in addition to a frequency band for the wireless communication system among the frequency band to be shared based on the information regarding the another wireless communication.
    Type: Grant
    Filed: January 8, 2015
    Date of Patent: July 17, 2018
    Assignee: SONY CORPORATION
    Inventor: Shinichiro Tsuda
  • Patent number: 10009149
    Abstract: Methods described herein are for wireless communication systems. One aspect of the invention is directed to a method for a HARQ process, in which the HARQ process includes a first transmission of an encoder packet and at least one retransmission. The method involves allocating a transmission resource for each respective transmission. The method involves transmitting control information from a base station to a mobile station for each respective transmission. The control information includes information to uniquely identify the HARQ process and an identification of one of a time resource, a frequency resource and a time and frequency resource that is allocated for the transmission. In some embodiments of the invention, specific control information is signalled from a base station to a mobile station to enable RAS-HARQ operation. In some embodiments of the invention, retransmission signaling in included as part of regular unicast signaling used for both first transmission and retransmissions.
    Type: Grant
    Filed: April 19, 2017
    Date of Patent: June 26, 2018
    Assignee: Apple Inc.
    Inventors: Mo-han Fong, Sophie Vrzic, Robert Novak, Jun Yuan, Dong-Sheng Yu
  • Patent number: 10003490
    Abstract: A communication system using hierarchical modulation and capable of flexibly adjusting line quality includes a transmission apparatus that hierarchically modulates and transmits signal sequences, a reception apparatus that hierarchically demodulates a received signal, and a hierarchization-parameter setting unit that sets hierarchization parameters. The transmission apparatus includes a hierarchical modulation unit that superimposes signals from layers while maintaining gray codes. The reception apparatus includes a hierarchical demodulation unit that demodulates and separates hierarchically modulated signals and detects signals from layers. The hierarchization-parameter setting unit sets a hierarchization ratio which is a signal power ratio used for superimposing a higher layer and a lower layer, a mapping pattern capable of selecting two patterns, and a mapping pattern mixing ratio indicating a ratio with which two mapping patterns are mixed.
    Type: Grant
    Filed: July 29, 2013
    Date of Patent: June 19, 2018
    Assignee: Mitsubishi Electric Corporation
    Inventors: Hiroshi Nishimoto, Akinori Ohashi
  • Patent number: 9979471
    Abstract: A method and apparatus for measuring a filtering characteristic, pre-equalizer and communication equipment. Wherein, the apparatus for measuring a filtering characteristic includes: a first measuring unit configured to measure multiple pieces of first average power of multiple first signals obtained after multiple first transmission signals pass through a transmitting end filtering module and are modulated, frequencies of the multiple first transmission signals being different; and a first processing unit configured to determine a filtering characteristic of the transmitting end according to the first average power, amplitudes of the first transmission signals and a first predefined correspondence relationship between average power of signals after passing through the transmitting end filtering module and being modulated and a product of amplitudes of the signals and the filtering characteristic of the transmitting end.
    Type: Grant
    Filed: December 12, 2016
    Date of Patent: May 22, 2018
    Assignee: FUJITSU LIMITED
    Inventors: Zhenning Tao, Yangyang Fan, Liang Dou
  • Patent number: 9929839
    Abstract: An embodiment of the present invention is disclosed including a method for adaptive reception, the method. The method includes receiving, by a user equipment (UE), an indicator from a first component carrier, the indicator indicating whether a second component carrier is in the On state. Receiving, by the UE, from the second component carrier a subframe wherein a reference signal is provided at a first symbol position of the subframe in a majority of subcarriers of the subframe. The second component carrier and the UE are then synchronized based on the reference signals. The UE then initiates a data link with the second component carrier.
    Type: Grant
    Filed: August 5, 2015
    Date of Patent: March 27, 2018
    Assignee: Futurewei Technologies, Inc.
    Inventors: Jialing Liu, Weimin Xiao, Qian Cheng
  • Patent number: 9907085
    Abstract: A method includes detecting, using a WiFi access point, channel use data indicating traffic on a plurality of channels of an unlicensed LTE band in a wireless network. The method further includes providing the channel use data to a Long Term Evolution (LTE) access point. The method further includes selecting, using the LTE access point, a channel for use in transmitting data by the LTE access point from among the plurality of channels based on the channel use data from the WiFi access point. The method further includes providing, from the LTE access point, an indication of an upcoming transmission configured to transmit data on the channel to the WiFi access point. The method further includes broadcasting one or more messages from the WiFi access point to one or more WiFi nodes, the one or more messages configured to prevent the WiFi nodes from transmitting on the channel.
    Type: Grant
    Filed: September 23, 2015
    Date of Patent: February 27, 2018
    Assignee: Avago Technologies General IP (Singapore) Pte. Ltd.
    Inventors: Yong Li, Guy Drory, Yonatan Cohen, Baoguo Yang, Matthew Fischer, Sharon Levy, Sindhu Verma, Shubhodeep Adhikari
  • Patent number: 9882812
    Abstract: A plurality of nodes in a first network mitigate data restrictions on access points which are an interface between the first network and a second network. The access points advertise their access parameters to the second network to the nodes. The nodes maintain a list of the advertised access parameters of each access point. The nodes determine whether to transmit data to the second network according to a first transmission mode or a second transmission mode based on the data to be transmitted and the list of access parameters maintained by that node. In the first transmission mode, the node determines to transmit the data to a first access point having a lowest cost with that node. In the second transmission mode, the node determines to transmit the data to a second access point having fewer access restrictions to the second network than the first access point.
    Type: Grant
    Filed: September 10, 2014
    Date of Patent: January 30, 2018
    Assignee: SILVER SPRING NETWORKS, INC.
    Inventors: Elad Gottlib, Dorothy Gellert
  • Patent number: 9877202
    Abstract: 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. Exchange procedures are disclosed in which incumbent information between two databases is exchanged. Also described herein are exchanges of information between databases whereby a querying database may receive restrictions on associated operating parameters of Cognitive Radio Systems (CRSs) under their control in an area. Further, a procedure is described herein by which a database that receives a request for shared spectrum from a CRS may first forward the request to a neighboring or victim database to determine the allowable channels and then may make the actual allocation based on this information and its own incumbents.
    Type: Grant
    Filed: October 8, 2014
    Date of Patent: January 23, 2018
    Assignee: InterDigital Patent Holdings, Inc.
    Inventors: Martino M. Freda, Pekka Ojanen
  • Patent number: 9848389
    Abstract: An example method is provided in one example embodiment and includes receiving a first message indicative of whether a first cell is non-interfering to at least one neighboring cell, determining whether the first cell is non-interfering to the at least one neighboring cell based upon the first message, and responsive to a determination that the first cell is not non-interfering to the at least one neighboring cells, reducing a power level of one or more downlink resources of a fractional frequency reuse portion of a frequency spectrum associated with the first cell.
    Type: Grant
    Filed: August 3, 2015
    Date of Patent: December 19, 2017
    Assignee: Cisco Technology, Inc.
    Inventors: Rohit Umesh Nabar, Ritesh K. Madan
  • Patent number: 9839021
    Abstract: A method, an apparatus and a system for selecting a downlink primary carrier for transmitting data are disclosed. The method includes the following steps: A terminal obtains primary carrier selection information configured by a network; and the terminal determines a downlink carrier corresponding to an uplink carrier of the terminal as a downlink primary carrier for transmitting data according to the primary carrier selection information. In the embodiments of the present invention, the network selects a downlink carrier corresponding to an uplink carrier of the terminal as a downlink primary carrier for transmitting data. The terminal needs to detect only the downlink primary carrier, and the downlink carrier needs to be switched or detected only if the primary carrier receives a signaling message for detecting or receiving other carriers, so it is not necessary to switch or detect the downlink carrier frequently, which reduces battery consumption of the terminal.
    Type: Grant
    Filed: September 16, 2014
    Date of Patent: December 5, 2017
    Assignee: Huawei Technologies Co., Ltd.
    Inventors: Lixia Xue, Yujuan He, Chaojun Li
  • Patent number: 9814070
    Abstract: Technology for performing small data transmissions at a user equipment (UE) is disclosed. An apparatus of the UE can receive, from an eNodeB, a small data transmission indicator that instructs the UE to establish a fast radio resource control (RRC) connection with the eNodeB. The apparatus of the UE can initiate a random access channel (RACH) procedure in order to establish the fast RRC connection with the eNodeB. The fast RRC connection may not include the establishment of bearers between the UE and the eNodeB. The apparatus of the UE can perform a small data transmission with the eNodeB using the fast RRC connection between the UE and the eNodeB.
    Type: Grant
    Filed: July 8, 2015
    Date of Patent: November 7, 2017
    Assignee: INTEL CORPORATION
    Inventors: Mo-Han Fong, Sangeetha Bangolae, Marta Martinez Tarradell
  • Patent number: 9749856
    Abstract: Methods and apparatuses for providing services for a mobile device with access to a cellular system are disclosed. In accordance with a method a mobile device sends to a cellular system a request for a service by a machine type device. The request includes information identifying the machine type device for use by the cellular system that is then used in exchange of information in relation to at least one of authentication, authorization and configuration. Information associated with configuration of a device-to-machine connection to the machine type device is then sent to the mobile device. The device-to-machine connection for use of the service is then established between the machine type device and the mobile device based on the received information. In another embodiment the mobile device contact the machine type device first and provides the machine type device with information assigned by the cellular system.
    Type: Grant
    Filed: June 20, 2012
    Date of Patent: August 29, 2017
    Assignee: Nokia Solutions and Networks OY
    Inventors: Vinh Van Phan, Ling Yu, Kari Veikko Horneman
  • Patent number: 9717037
    Abstract: Disclosed is a method for scanning for an access point. An active scan method comprises the steps of: generating a probe request frame including information on the signal strength of a terminal; and transmitting the probe request frame to an access point. Thus, a waste of time and radio resources can be prevented.
    Type: Grant
    Filed: June 27, 2013
    Date of Patent: July 25, 2017
    Assignee: KT Corporation
    Inventors: Byung Wan Yoon, Su Hwan Rim
  • Patent number: 9706433
    Abstract: From a plurality of messages provided by at least a first license-exempt access node which give usage information for the at least one channel in license-exempt radio spectrum, there is derived channel-specific statistical traffic information. This information for the channel is then provided to a second access node that controls licensed radio spectrum. Or in another embodiment the second access node can get this information by sensing and measuring the channel itself. The second access node retrieves this information from its local memory and sends on the licensed radio spectrum a downlink message having contents, determined from the channel-specific statistical traffic information, for aiding a user equipment UE to access the channel with a probability defined by the contents. The UE receives this message, extracts the contents, and attempts to access that channel in the license-exempt radio spectrum utilizing the defined probability.
    Type: Grant
    Filed: April 5, 2012
    Date of Patent: July 11, 2017
    Assignee: Avago Technologies General IP (Singapore) Pte. Ltd.
    Inventors: Haifeng Wang, Kari Rikkinen, Ning Zhang, Ting Zhou, Jing Xu, Wei Zou, Zhenhong Li, Jinling Du
  • Patent number: 9674073
    Abstract: This invention extends routing mechanisms that use link metrics for route selection so that: A link metric cross correlation vector is determined for all links, where each element in the vector corresponds to some other link, and reflects the change in the link metric value if a data flow would already use this other link. The invention further describes a specific embodiment where all cross-correlating links are adjacent to each other, i.e., they terminate or originate in a common node. A mechanism is described to create an extended routing graph. This extended graph permits the use of standard polynomial time algorithms that simultaneously construct the optimal route and find the optimal route metric (such as shortest-path algorithms) also for the adjacent link cross-correlating case.
    Type: Grant
    Filed: December 1, 2005
    Date of Patent: June 6, 2017
    Assignee: Telefonaktiebolaget LM Ericsson (Publ)
    Inventors: Mikael Prytz, Joachim Sachs, Per Magnusson, Johan Lundsjö, Peter Larsson
  • Patent number: 9674839
    Abstract: The concepts relate to radio white space utilization. One example can measure a potential radio white space frequency. The example can also communicate results of the measuring for other devices and receive other results from the other devices relating to the potential radio white space frequency. The method can further determine whether the potential radio white space frequency is actually an available radio white space frequency based upon the results and the other results.
    Type: Grant
    Filed: June 12, 2015
    Date of Patent: June 6, 2017
    Assignee: Microsoft Technology Licensing, LLC
    Inventors: Amer A. Hassan, Daniel A. Reed, Paul W. Garnett, Billy Anders
  • Patent number: 9609520
    Abstract: Certain aspects of the present disclosure relate to techniques for supporting television white space (TVWS) communication. In an aspect of the present disclosure, a low-rate TVWS enabler (Mode II wireless communication device) may provide initial enablement for all Mode I devices (e.g., access points and user terminals), as well as it may transmit a contact verification signal (CVS) on a regular basis to keep the Mode I devices enabled for the TVWS communication.
    Type: Grant
    Filed: January 12, 2012
    Date of Patent: March 28, 2017
    Assignee: QUALCOMM Incorporated
    Inventors: Stephen J. Shellhammer, Cong Shen, Rahul Tandra, Santosh Paul Abraham, Sameer Vermani, Hemanth Sampath
  • Patent number: 9603188
    Abstract: Dynamic connection management of a network connection at an electronic communications device is disclosed. In an example, one or more connection criteria associated with connection establishment at the electronic communications device is determined at the electronic communications device. The electronic communications device determines a connection acquisition priority list based on current values of the one or more connection criteria, the connection acquisition priority list being a prioritized order of connection types. The electronic communications device attempts to establish a network connection based on the connection acquisition priority list.
    Type: Grant
    Filed: January 13, 2009
    Date of Patent: March 21, 2017
    Assignee: QUALCOMM Incorporated
    Inventor: Arnold Jason Gum
  • Patent number: 9553709
    Abstract: A method and an apparatus is provided for conducting wireless data communications using whitespace and non-whitespace channels. A short-range base station with an interface for whitespace channels and another interface for non-whitespace channels communicates with user equipment outfitted with equivalent interfaces. The short-range base station has a preference for using the interface for the whitespace channels, where the whitespace channels are whitespace spectrum bands that are available during periods when a primary user is not actively utilizing the whitespace. A spectrum server analyzes spectrum occupancy database information and whitespace spectrum sensing measurements to determine lists of available whitespace spectrum bands for use by the short-range base station.
    Type: Grant
    Filed: October 14, 2013
    Date of Patent: January 24, 2017
    Assignee: Alcatel Lucent
    Inventors: Milind M. Buddhikot, Sayandeep Sen, Dragan Samardzija, Tan Zhang, Susan Walker
  • Patent number: 9538528
    Abstract: An apparatus defines a set of resources out of a first number of orthogonal radio resources and controls a transmitting means to simultaneously transmit a respective first radio signal for each resource on all resources of the set. A respective estimated interference is estimated on each of the resources of the set when the respective first radio signals are transmitted simultaneously. A first resource of the set is selected if the estimated interference on the first resource exceeds a first predefined level and, in the set, the first resource is replaced by a second resource of the first number of resources not having been part of the set. Each of the controlling and the estimating, the selecting, and the replacing is performed in order, respectively, for a predefined time.
    Type: Grant
    Filed: October 6, 2011
    Date of Patent: January 3, 2017
    Assignee: Nokia Solutions and Networks Oy
    Inventors: Gustavo Wagner, Andrea Cattoni, Istvan Zsolt Kovacs
  • Patent number: 9525449
    Abstract: In wireless communication, a camera on a mobile communication device may be activated to take photographs of the surroundings. The photographs may be further converted into infrared photographs. People near the mobile communication device may be identified on the infrared photographs. The EM radiation of the mobile communication device may then be adjusted to avoid the regions in which people are identified.
    Type: Grant
    Filed: June 3, 2013
    Date of Patent: December 20, 2016
    Assignee: EMPIRE TECHNOLOGY DEVELOPMENT LLC
    Inventor: Xuefeng Yin
  • Patent number: 9485718
    Abstract: Various embodiments enable recovering from an out-of-service state in a wireless device. A processor may perform scans of a first acquisition database to acquire a first renewed service connection for a first subscriber identification module (SIM). The scans include first and second searches for first and second channels identified in first and second technology lists, respectively, from the first acquisition database, respectively, until either a renewed service connection is acquired or each of the first and second technology lists are exhausted. The first and second technology lists identify channels from first and second radio access technologies. A currently used channel of a second SIM acquired service is first on the first technology list. The processor may perform a full frequency scan to acquire a first renewed service connection for the first SIM in response to determining that each of the first and second technology lists were exhausted.
    Type: Grant
    Filed: July 16, 2014
    Date of Patent: November 1, 2016
    Assignee: QUALCOMM Incorporated
    Inventors: Karthik Nagpal Bengoti Vuchula, Shivank Nayak, Rajesh Madhukar Patil, Jiming Guo, Venugopal Krishna Srinivasa Srungaram, Chih-Ping Hsu
  • Patent number: 9459345
    Abstract: Systems and methods for screening, where a subject walks through or in front of a passive detector (or scanning unit) to be screened for possession of unauthorized electronics devices, provide for detecting and monitoring electronics systems not authorized to be used in secure areas. By focusing a very narrow beam width antenna array, individuals can be screened who may have concealed electronics devices that can pose danger to the surroundings. There is no need for removing clothing or accessories such as a jacket or backpack, for example. The detection system may include a frequency scanned passive receiver that captures a signal from a detected electronics device, measures its strength, and identifies the device or classifies it according to a pre-determined set of categories (e.g., cellular phone, camera, or global positioning system (GPS)).
    Type: Grant
    Filed: May 13, 2014
    Date of Patent: October 4, 2016
    Inventor: Farrokh Mohamadi
  • Patent number: 9445446
    Abstract: This disclosure proposes a method to achieve D2D (device to device) communication in LTE system. Traditional communication in LTE systems is based on eNB. UEs (User Equipment) need to connect to eNB to send uplink and downlink transmission. Device to device communication is different from the traditional LTE scheme. UEs may directly connect to other UEs, sending data to each other. The disclosure provides the signaling process, based on LTE network entry procedure, to establish D2D communication in LTE system. D2D UEs send Msg1 to another D2D UE, and the recipient respond with Msg2. After the negotiation between D2D UEs, Msg3 and Msg4 are exchanged between UEs and eNB. Several embodiments are provided for the signaling of Msg3 and Msg4. The D2D data transmission may be enabled after the Msg4 or explicit data session initialization.
    Type: Grant
    Filed: March 15, 2013
    Date of Patent: September 13, 2016
    Assignee: Industrial Technology Research Institute
    Inventors: Hung-Yu Wei, Ching-Chun Chou
  • Patent number: 9413636
    Abstract: One embodiment identifies all one-hop neighbor nodes and two-hop neighbor nodes of a node; determines an active set of one-hop neighbor nodes for the node, comprising: includes in the active set each one-hop neighbor node that is either an edge node or connected with at least one two-hop neighbor node with which no other one-hop neighbor nodes are connected; and if the active set is not yet complete, then: determine all combinations of one-hop neighbor nodes that are not already in the active set; and tests each combination in order of each combination's total-energy value to determine whether a specific combination is able to complete the active set; if no combination is able to complete the active set, then including all one-hop neighbor nodes in the active set; and communicates a message to each one-hop neighbor node in the active set indicating that it is in the active set.
    Type: Grant
    Filed: April 2, 2014
    Date of Patent: August 9, 2016
    Assignee: Cisco Technology, Inc.
    Inventors: Alvaro E. Retana, Michael Barnes, Russell I. White, Alan Patrick Sheridan, Stanley M. Ratliff
  • Patent number: 9345002
    Abstract: The present disclosure discloses a dynamic spectrum allocation method and device based on channel management. The method comprises the following steps: a network node generates a channel set according to an available channel list and channel classification information, and maintains and updates the channel set; and the network node selects a spectrum from the channel set and allocates the spectrum. The device comprises: a channel set generation module configured to generate a channel set according to an available channel list and channel classification information and maintain and update the channel set; and a spectrum allocation module configured to select a spectrum from the channel set and allocate the spectrum. The present disclosure can reduce the delay in the spectrum resource reconfiguration of a CR system, improves the overall performance of spectrum resource reconfiguration and increases the utilization efficiency of a spectrum.
    Type: Grant
    Filed: February 27, 2013
    Date of Patent: May 17, 2016
    Assignee: ZTE Corporation
    Inventors: Ting Miao, Yan Li, Xing Liu, Bin Wang, Dong Zhou
  • Patent number: 9295097
    Abstract: That a trigger for creating a temporary collaborative ad-hoc network of hardware nodes has occurred is detected. In response, the temporary collaborative ad-hoc network is created via intercommunication among the hardware nodes. After the temporary collaborative ad-hoc network has been created, the temporary collaborative ad-hoc network performs a given function. A particular hardware node within the temporary collaborative ad-hoc network can perform a roll call request so that it ascertains a list of the hardware nodes within the temporary collaborative ad-hoc network. Performing the roll call request can include ascertaining that a correctness of the list of the hardware nodes satisfies a threshold, such that the correctness of the list of the hardware nodes is not necessarily completely correct.
    Type: Grant
    Filed: May 1, 2012
    Date of Patent: March 22, 2016
    Assignee: International Business Machines Corporation
    Inventors: Mark B. Stevens, John D. Wilson
  • Patent number: 9288328
    Abstract: A non-transitory computer-readable medium stores computer readable instructions, when executed by a processor of a communication terminal, perform processes including a first obtaining operation, a second obtaining operation, a first storing operation, a third obtaining operation, a second storing operation, and a communicating operation. The first obtaining operation obtains identification information of wireless modules provided in the communication terminal. The second obtaining operation obtains a transmission channel capacity and/or a delay time for the wireless modules. The first storing operation stores the transmission channel capacities and/or the delay time in association with the identification information of the wireless modules. The third obtaining operation obtains data type information corresponding to plural types of communication data in a remote conference. The second storing operation stores the data type information in association with the identification information.
    Type: Grant
    Filed: March 25, 2014
    Date of Patent: March 15, 2016
    Assignee: Brother Kogyo Kabushiki Kaisha
    Inventor: Katsuhiro Amano
  • Patent number: 9277411
    Abstract: A system and method for converting a non-cognitive radio into a cognitive radio is presented. A cognitive radio system includes, a non-cognitive radio; an electronic device, a spectrum sensing logic and configuration and management logic. The electronic device is connected to the non-cognitive radio so that it receives and/or transmits messages to/from a wireless network. The configuration and management logic is connected between the non-cognitive radio and the spectrum sensing logic. The spectrum sensing logic and the configuration and management logic are removable from the non-cognitive radio allowing the cognitive radio to operate in a non-cognitive mode. The spectrum sensing logic senses a wireless environment to determine available frequencies and available channels. The configuration and management logic transmits available frequencies, available channels or other spectrum data to a remote spectrum manager that is managing access to the wireless network.
    Type: Grant
    Filed: March 11, 2011
    Date of Patent: March 1, 2016
    Assignee: BAE Systems Information and Electronic Systems Integration Inc.
    Inventors: Apurva N. Mody, Matthew J. Sherman, Kwok N. Yau, Alan Trojan, Sharon K. Sputz, Joseph Farkas
  • Patent number: 9271187
    Abstract: A network device may make a determination that a first backhaul connection, which serves a first base station, is congested and that a second backhaul connection, which serves a second base station, is not congested. This determination may be made based on a first periodic data cap imposed on the first backhaul connection, a traffic load on the first backhaul connection, a second periodic data cap imposed on the second backhaul connection, and a traffic load on the second backhaul connection. In response to the determination, the network device may configure a value of a cellular communication parameter utilized by one or both of the base stations. The configuration may comprise periodic adjustments of the value of the cellular communication parameter. The periodic adjustments may cause one or more mobile devices to be cyclically handed-over between the first base station and the second base station.
    Type: Grant
    Filed: May 14, 2014
    Date of Patent: February 23, 2016
    Assignee: Google Inc.
    Inventors: Siddharth Ray, Murari Srinivasan, Milo Steven Medin
  • Patent number: 9258726
    Abstract: In some embodiments, an apparatus includes a spectral scanning controller configured to interrupt service at a wireless access point (WAP) such that the WAP performs spectral scanning during service interruption. The spectral scanning controller is configured to interrupt service at the WAP at a first scanning frequency when the spectral scanning controller is in a first configuration. The spectral scanning controller is configured to interrupt service at the WAP at a second scanning frequency different from the first scanning frequency when the spectral scanning controller is in a second configuration. The spectral scanning controller is configured to move from the first configuration to the second configuration in response to a change in at least one of a service demand, a service quality, a spectral scanning demand or a spectral scanning quality.
    Type: Grant
    Filed: March 30, 2012
    Date of Patent: February 9, 2016
    Assignee: Juniper Networks, Inc.
    Inventors: Liang-Jong Huang, Lap Kong Law
  • Patent number: 9215712
    Abstract: A mobile device receives a signal comprising a PSS and a SSS. The mobile device performs iterative MFHT utilizing a reduced number of MFH branches. At each iteration, frequency offset estimation and Cell-ID detection are concurrently performed. An iteration starts with selecting initial frequency offsets spanning a frequency offset estimation range. The selected initial frequency offsets are placed in the MFH branches. A particular MFH branch with a maximum PSS correlation peak magnitude is selected at the iteration. A frequency offset estimate in the selected MFH branch is utilized for frequency control. The frequency offset estimation range utilized for the current iteration is reduced for the next iteration. A Cell-ID is declared if the Cell-ID is consistently detected not only within a particular iteration on the basis of having detected consistent cell ID information for the first and second halves of a radio frame, but also from iteration to iteration.
    Type: Grant
    Filed: February 4, 2013
    Date of Patent: December 15, 2015
    Assignee: Broadcom Corporation
    Inventors: Francis Swarts, Mark Kent
  • Patent number: 9204459
    Abstract: One embodiment of the present invention relates to a method for efficient reassignment of a secondary communication channel (having a first priority) within a white space, upon arrival of a conflicting primary user signal (having a second priority higher than the first priority). In particular, the method comprises reassigning a secondary communication channel to unused portions of one or more white spaces remaining after the arrival of one or more primary users. For example, in one embodiment wherein one or more secondary communication channels are operated at contiguous secondary frequency ranges within a white space, a primary/incumbent user may arrive at a frequency range that conflicts with the secondary frequency range and that generates unused frequency portions of the white space(s). The secondary communication channel may be reassigned to the unused frequency portions of the white space (e.g.
    Type: Grant
    Filed: February 15, 2013
    Date of Patent: December 1, 2015
    Assignee: Intel Deutschland GmbH
    Inventor: Markus Mueck
  • Patent number: 9185455
    Abstract: A method and apparatus for using 802.11 Wireless LANs in TV white space are provided that additionally allows coexistence with non-802.11 devices in the same spectrum space. The method and apparatus extend concepts used in traditional 802.11 applications in the MAC and PHY layers so that WLANs can function over TV white space channels. The method and apparatus also facilitates coexistence of non 802.11 devices and existence with other 802.11 applications by extending the Enhanced Distributed Channel Access mechanism used to provide quality of service. An OFDM system with fixed subcarrier spacing is suggested to accommodate spectrum characteristics (variable center frequency and channel bandwidth) of the TVWS.
    Type: Grant
    Filed: February 16, 2011
    Date of Patent: November 10, 2015
    Assignee: THOMSON LICENSING
    Inventors: Hou-Shin Chen, Wen Gao
  • Patent number: 9167465
    Abstract: The present invention relates to a method, in which a terminal transmits channel state information in a multi-node system, which includes the steps of: receiving information about cooperative transmission candidate nodes from a network; calculating first channel state information about the cooperative transmission candidate nodes; calculating second channel state information by assuming that the nodes included in the interference candidate modes are interference nodes among the cooperative transmission candidate nodes; and transmitting the calculated first and second channel state information to the network.
    Type: Grant
    Filed: January 20, 2012
    Date of Patent: October 20, 2015
    Assignee: LG ELECTRONICS INC.
    Inventors: Jinyoung Chun, Kitae Kim, Sunam Kim, Jiwon Kang, Binchul Ihm, Sungho Park
  • Patent number: 9143950
    Abstract: Methods and corresponding systems for spectrum management featuring advanced frequency-allocation planning and advanced interference avoidance. The invention discloses access points that transmit directionally and assigning a predefined channel in a predefined direction, in order to reduce interference between closely located access-points.
    Type: Grant
    Filed: May 19, 2006
    Date of Patent: September 22, 2015
    Assignee: GO NET SYSTEMS LTD.
    Inventors: Yaron Menahem Peleg, Gadi Shimon Perets, Yaron Fein
  • Patent number: 9131400
    Abstract: A method comprises off-loading data traffic from user equipment in a coverage area of a cell from a first band to second band. The off-loading comprises building a probability distribution function of a transmit configuration for power levels of sub-bands for first bands and second bands in the cell and updating the probability distribution function being configured at an end of a selected time interval.
    Type: Grant
    Filed: March 14, 2013
    Date of Patent: September 8, 2015
    Assignee: Nokia Solutions and Networks Oy
    Inventor: Mehdi Bennis
  • Patent number: 9113483
    Abstract: There are provided measures for spectrum sharing for cellular-controlled offloading using an unlicensed band. Such measures exemplarily comprise initiating an offloading of traffic from a cellular link on a cellular band to an unlicensed link on an unlicensed band, wherein the unlicensed link is synchronized with the cellular link, and sensing a channel on the unlicensed band in a symbol-synchronized sensing duration of at least one symbol length at the beginning of a predetermined subframe of the unlicensed band.
    Type: Grant
    Filed: April 12, 2011
    Date of Patent: August 18, 2015
    Assignee: BROADCOM CORPORATION
    Inventors: Wei Zou, Zhenhong Li, Haifeng Wang
  • Patent number: 9088934
    Abstract: Disclosed is a method and corresponding apparatus for management of access probe transmission from a wireless communication device (WCD) to a radio access network (RAN). The WCD determines that a particular coverage area is not the strongest coverage area detected by the WCD, and the WCD responsively transmits an access probe to the RAN in that particular coverage area. For instance, the WCD may define a sequence of access probe transmissions including at least one transmission to just a coverage area that the WCD deems to not be the strongest and further including at least one transmission to just a coverage area that the WCD deems to be the strongest.
    Type: Grant
    Filed: March 25, 2013
    Date of Patent: July 21, 2015
    Assignee: Sprint Spectrum L.P.
    Inventors: Siddharth S. Oroskar, Ryan P. Dreiling
  • Patent number: 9065633
    Abstract: A controller receives first or second equipment identifier from a first wireless communication apparatus, by using one wireless communication circuit of the third and fourth wireless communication circuit. When the one wireless communication circuit is the fourth wireless communication circuit, the controller sets an encryption key information for wireless communications with the first wireless communication apparatus, to encryption key information including an equipment identifier that does not coincide with a received equipment identifier among the received plurality of encryption key information, and controls the third wireless communication circuit to transmit and receive encrypted transmission data to and from the first wireless communication apparatus by using key data included in set encryption key information.
    Type: Grant
    Filed: October 10, 2012
    Date of Patent: June 23, 2015
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Toyoshi Yamada, Nobuhiko Arashin, Osamu Tanaka