Frequency Reuse Scheme Patents (Class 455/447)
  • Patent number: 9307571
    Abstract: A frequency offset calibrating method for use in a communication device connected to a communication system is provided. The method includes the following steps: determining a discontinuous reception cycle; awakening the communication device to a working mode from a sleep mode every discontinuous reception cycle and keep the communication device in the working mode for a first time period to receive a paging indication channel message from a communication network periodically; and awakening the communication device at a second time period other than the first time period during a first discontinuous reception cycle, thereby estimating an accumulated timing offset of a clock signal of the communication device and calibrating a frequency offset of the clock signal. In the invention, the accumulated timing offset of the clock signal can be calibrated efficiently to increase the reception performance of the page indication channel message with simple implementation and low hardware cost.
    Type: Grant
    Filed: March 3, 2014
    Date of Patent: April 5, 2016
    Assignee: MEDIATEK SINGAPORE PTE. LTD.
    Inventors: Yueheng Huo, Wenze Qu
  • Patent number: 9301226
    Abstract: A user equipment performs downlink measurement on neighbor cells, but the measurement performance on a target cell (in terms of measurement period/sampling/accuracy etc) is dependent on the relative performance difference between the target cell and a reference cell. The reference cell may be the serving cell, or may be the strongest cell. The network is thus able to keep track of the required number of target cells without degrading the measurement performance of important cells. The UE on the other hand is still able to save its battery as much as possible while making full use of DRX.
    Type: Grant
    Filed: February 9, 2015
    Date of Patent: March 29, 2016
    Assignee: Optis Wireless Technology, LLC
    Inventors: Muhammad Kazmi, Walter Müller
  • Patent number: 9294352
    Abstract: Systems and methods for implementing network changes are described herein. In one aspect, a network change procedure may be comprised of a plurality of scripts that may implement a change in the network. In one embodiment, the deployment may be paused after the script has been executed. During the pause, a change management server may determine the impact of the change on the network. If the change had a positive effect, the change management server may execute another script to make another network change. However, if the change had a negative effect, the change management server may initiate one or more remedial actions.
    Type: Grant
    Filed: October 29, 2014
    Date of Patent: March 22, 2016
    Assignee: Amazon Technologies, Inc.
    Inventors: Robert Kennedy, Timothy R. Kohn, Devin Kowatch, Richard A. Sheehan
  • Patent number: 9288723
    Abstract: A serving cell sends to user equipments (UEs) indications of frequency bands supported by neighbor cells/frequencies, at least one individual neighbor cell/frequency supporting a plurality of frequency bands. The neighbor cells/frequencies are filtered by the UE to retain only those that are indicated to support a frequency band or frequency bands which are also supported by the UE. The sent indications comprise, for each respective neighbor cell/frequency, one absolute radio frequency channel number (ARFCN) associated with the respective neighbor cell/frequency and the frequency band or bands associated with the respective neighbor cell/frequency. Examples are given of various system information blocks for sending the frequency band indications to the UE. In one embodiment they are arranged in an information element IE having an entry for each of the neighbor cells/frequencies and a list of frequency bands for each entry.
    Type: Grant
    Filed: December 9, 2014
    Date of Patent: March 15, 2016
    Assignee: XIAOMI H.K. LIMITED
    Inventors: Keiichi Kubota, Brian Martin
  • Patent number: 9276685
    Abstract: Distributed antenna systems (DASs) can include a plurality of spatially separated remote antenna units. According to at least one example, a first group of remote antenna units can simulcast downlink transmissions on a first carrier with a particular sector identity (ID). A second group of remote antenna units, including at least one different remote antenna unit from the first group, can simulcast downlink transmissions on a second carrier with the same sector ID. According to at least one other example, two or more remote antenna units which include respective coverage areas that are non-adjacent to one another can be employed to simulcast downlink transmissions.
    Type: Grant
    Filed: May 1, 2012
    Date of Patent: March 1, 2016
    Assignee: QUALCOMM Incorporated
    Inventors: Joseph B. Soriaga, Christopher Gerard Lott, Jing Sun, Kambiz Azarian Yazdi, Rashid Ahmed Akbar Attar, Radhika Gowaikar, Donna Ghosh
  • Patent number: 9276653
    Abstract: A system that facilitates antenna selection and pilot reduction in a multi-antenna system is provided. During operation, in response to an activating event, the system performs a full pilot transmission by transmitting pilot signals through all available transmit antennas at a base station. The system then determines the selected subset of transmit antennas by receiving lists of selected antennas from mobile stations associated with preferred users, wherein a given mobile station selects a list of antennas in response to pilot signals received during the full pilot transmission. The system then combines the received lists to produce the selected subset, wherein the selected subset includes all antennas which appear in the received lists of selected antennas. Next, during normal system operation, the system periodically performs a selected pilot transmission by transmitting pilot signals through a selected subset of the available transmit antennas.
    Type: Grant
    Filed: April 10, 2013
    Date of Patent: March 1, 2016
    Assignee: Lattice Semiconductor Corporation
    Inventor: Aykut Bultan
  • Patent number: 9276686
    Abstract: Distributed antenna systems (DASs) can include a plurality of spatially separated remote antenna units. According to at least one example, a first group of remote antenna units can simulcast downlink transmissions on a first carrier with a particular sector identity (ID). A second group of remote antenna units, including at least one different remote antenna unit from the first group, can simulcast downlink transmissions on a second carrier with the same sector ID. According to at least one other example, two or more remote antenna units which include respective coverage areas that are non-adjacent to one another can be employed to simulcast downlink transmissions.
    Type: Grant
    Filed: October 30, 2014
    Date of Patent: March 1, 2016
    Assignee: QUALCOMM Incorporated
    Inventors: Joseph B Soriaga, Christopher Gerard Lott, Jing Sun, Kambiz Azarian Yazdi, Rashid Ahmed Akbar Attar, Radhika Gowaikar, Donna Ghosh
  • Patent number: 9264929
    Abstract: The present invention provides an apparatus and method of reporting logged measurements in a wireless communication system. User equipment receives an MDT (Minimization of Drive Tests) configuration from a base station, and logs a measurement on the basis of the MDT configuration in order to collect logged measurements. The user equipment determines whether the logged measurement needs to be reported. If it is determined that the logged measurement needs to be reported, the user equipment transmits to the base station a report indicator indicating the need for reporting of the logged measurement.
    Type: Grant
    Filed: May 26, 2011
    Date of Patent: February 16, 2016
    Assignee: LG ELECTRONICS INC.
    Inventors: Sung Hoon Jung, Seung June Yi, Young Dae Lee, Sung Duck Chun, Sung Jun Park
  • Patent number: 9219570
    Abstract: Various example embodiments are disclosed relating to feedback and link adaptation techniques for wireless networks. According to an example embodiment, an apparatus may include a processor or controller. The controller may be configured to determine a channel quality indication (CQI) value for each of a plurality of wireless sub-channels, discard any of the CQI values older than a threshold time, leaving a set of current CQI values, determine a percentile CQI value based on the set of current CQI values, and transmit the percentile CQI value to an infrastructure node. The infrastructure node, may, for example, determine or select one or more data transmission parameters, such as a modulation scheme and/or coding rate, based at least in part on the received percentile CQI value.
    Type: Grant
    Filed: April 30, 2008
    Date of Patent: December 22, 2015
    Assignee: NOKIA TECHNOLOGIES OY
    Inventors: Klaus Franz Doppler, Carl Simon Wijting
  • Patent number: 9220030
    Abstract: The present invention discloses a method of a terminal to reduce interference between cells in a multicell system. In more detail, the method includes: receiving information on at least one adjacent base station from a serving base station; receiving a reference signal from the at least one adjacent base station on the basis of the information on the at least one adjacent base station; measuring interference for each transmitting antenna of the at least one adjacent base station by using the reference signal; and transmitting interference information on the each transmitting antenna to the serving base station.
    Type: Grant
    Filed: September 16, 2011
    Date of Patent: December 22, 2015
    Assignee: LG Electronics Inc.
    Inventors: Jinyoung Chun, Binchul Ihm, Jiwon Kang, Sunam Kim, Sungho Park
  • Patent number: 9210654
    Abstract: A telecommunications system including a plurality of repeater nodes, each repeater node having a transceiver unit operable to transmit and receive data to or from one or more other of the repeater nodes or a control node or a mobile device within a predetermined range. The control node operable to transmit data to and receive data from the mobile device via the repeater nodes using a time frame divided into a plurality of time slots. The time slots of the time frame are allocated to the repeater nodes to the effect that each repeater node transmits to another repeater node in one of the upstream or the downstream directions in a time slot which is a minimal time from the time slot in which the other repeater node transmits in the upstream or downstream direction.
    Type: Grant
    Filed: July 24, 2013
    Date of Patent: December 8, 2015
    Assignee: Multitione Electronics PLC
    Inventors: Robert Robertson, Andrew Lewis
  • Patent number: 9204445
    Abstract: A wireless communications system is described which comprises a plurality of base stations, each comprises at least one beam generating means for generating narrow spatial beams for communicating with respective subscriber devices located along a direction to which the respective narrow beam is currently directed. The system's transmission resources are allocated so that a substantial part of the resources allocated to each of the beam generating means is different from a substantial part of transmission resources allocated to any of the angularly adjacent beam generating means at the respective base station and are different from the substantial part of the resources allocated to beam generating means associated with adjacent base stations and directed towards geographical areas located in a proximity to the geographical area towards which the respective narrow beam is directed.
    Type: Grant
    Filed: September 23, 2009
    Date of Patent: December 1, 2015
    Assignee: ALVARION LTD.
    Inventor: Naftali Chayat
  • Patent number: 9198189
    Abstract: A wireless communication apparatus is capable of improving communication efficiency by reducing the amount of control information transmitted. A channel quality information extraction section extracts CQI's from a received signal. An allocation control section allocates subcarriers for every communication terminal apparatus and selects a modulation scheme in such a manner that required transmission rate is satisfied for each communication terminal apparatus based on required transmission rate information, etc. and CQI's for communication terminal apparatus of each user. A required subcarrier number determining section decides the number of subcarriers allocated to every communication terminal apparatus so as to satisfy the required transmission rate for each communication terminal apparatus. A required subcarrier number information generating section generates information for the number of subcarriers allocated to every communication terminal apparatus.
    Type: Grant
    Filed: February 19, 2014
    Date of Patent: November 24, 2015
    Assignee: Panasonic Intellectual Property Corporation of America
    Inventors: Jun Cheng, Akihiko Nishio
  • Patent number: 9191956
    Abstract: An example system includes a plurality of wireless communication elements and a controller. The plurality of wireless communication elements are configured to provide wireless service to a geographic area of interest, each wireless communication element comprising at least an antenna port or at least one antenna. The controller is configured to control the wireless communication elements, wherein the controller is configured to determine respective ones of the wireless communication elements that are to be activated or not activated.
    Type: Grant
    Filed: June 30, 2012
    Date of Patent: November 17, 2015
    Assignee: Alcatel Lucent
    Inventors: Doru Calin, Aliye Ozge Kaya, Kai Yang, Simon Yiu
  • Patent number: 9179334
    Abstract: The technology described automatically resolves cell identity collisions/conflicts in a cellular radio communications network. A detecting node determines that a first cell identifier associated with a first conflicting cell is the same as a second cell identifier associated with a second conflicting cell. One of the first and second conflicting cells is selected to change its cell identifier. A different cell identifier is determined for the selected cell. The different cell identifier is then provided to other cells and preferably to user equipment (UE) terminals without disrupting ongoing UE communications.
    Type: Grant
    Filed: October 22, 2013
    Date of Patent: November 3, 2015
    Assignee: Telefonaktiebolaget L M Ericsson (publ)
    Inventors: Johan Moe, Pal Frenger, Fredrik Gunnarsson
  • Patent number: 9119026
    Abstract: Briefly, in accordance with one embodiment, a method of transmitting signals is provided. Signal waveforms are transmitted from at least two respective sectors. The at least two respective sectors are from at least two different sets of a superset of sectors. The transmitted signal waveforms include signal waveforms at least nearly mutually orthogonal at least along a particular signal dimension. An advantage of such an embodiment, for example, is reduced signal interference.
    Type: Grant
    Filed: May 1, 2008
    Date of Patent: August 25, 2015
    Assignee: QUALCOMM Incorporated
    Inventors: Peter John Black, Qiang Wu, Roberto Padovani, Wanlun Zhao, Yeliz Tokgoz, Ayman Fawzy Naguib, Pranav Dayal, Parag Arun Agashe, Naga Bhushan, Je Woo Kim
  • Patent number: 9100959
    Abstract: The invention relates generally to mobile communication networks. More particularly, the invention relates to interference management and carrier selection for transmitting data. There is provided a solution for improved selection of a cell-specific base carrier, the solution utilizing a timing framework for the carrier selection. The solution includes determining a maximum allowed time duration, and performing within the determined maximum allowed time duration: obtaining information related to one or more selected carriers from at least one neighboring base station, selecting the at least one cell-specific base carrier for data transmission on the basis of the obtained information, and informing the at least one neighboring base station of the selected cell specific base carrier.
    Type: Grant
    Filed: July 8, 2010
    Date of Patent: August 4, 2015
    Assignee: Nokia Solutions and Networks Oy
    Inventors: Istvan Zsolt Kovacs, Frank Frederiksen, Luis Garcia
  • Patent number: 9094155
    Abstract: A disclosed transmission apparatus includes a multiplexing portion that multiplexes a common pilot channel, a shared control channel, and a shared data channel; a symbol generation portion that performs an inverse Fourier transformation on the multiplexed signal so as to generate a symbol; and a transmission portion that transmits the generated symbol. The multiplexing portion multiplexes the shared control channel including control information necessary for demodulation of the shared data channel including a payload and the common pilot channel to be used by plural users in a frequency direction, and the shared data channel in a time direction with respect to the common pilot channel and the shared control channel. Even when the number of symbols composing a transmission time interval (TTI) is reduced, transmission efficiency of channels excluding the common pilot channel can be maintained by reducing insertion intervals of the common pilot channel accordingly.
    Type: Grant
    Filed: May 22, 2012
    Date of Patent: July 28, 2015
    Assignee: NTT DOCOMO, INC.
    Inventors: Yoshihisa Kishiyama, Kenichi Higuchi, Mamoru Sawahashi
  • Patent number: 9078273
    Abstract: Provided is a setting method for the usable resource for a communication terminal which, while suppressing an inter-adjacent-cell interference, improves a selection flexibility for a band for the communication terminal subjected to a strong influence of the adjacent-cell interference.
    Type: Grant
    Filed: December 9, 2010
    Date of Patent: July 7, 2015
    Assignee: NEC CORPORATION
    Inventor: Takahiro Nobukiyo
  • Patent number: 9072110
    Abstract: A method of inter-cell interference coordination is provided for UE measurements and network access procedure. In a first embodiment, a UE in idle mode performs measurements on received radio signals applying a simplified radio resource restriction for interference coordination. The UE determines the restricted radio resource without receiving explicit measurement configuration. In a second embodiment, during various phases of a network access procedure, the UE indicates its interference status and/or additional interference information to its serving base station to enhance interference coordination. In a third embodiment, the UE in connected mode performs measurements on both interference-protected transmission resources and non-interference-protected transmission resources. The UE measurement results are used for scheduling, radio link monitoring, and/or mobility management to increase radio spectrum efficiency and to improve user experience.
    Type: Grant
    Filed: November 7, 2011
    Date of Patent: June 30, 2015
    Assignee: MEDIATEK INC.
    Inventors: Yih-Shen Chen, Per Johan Mikael Johansson
  • Patent number: 9055603
    Abstract: A method is disclosed of scheduling up-link transmissions for a number of terminals of a wireless communication system into a number of groups, wherein each group comprises terminals intended for simultaneous up-link transmission during a respective period of time. A subset metric may be calculated for each of a number of subsets of terminals based on transmissions received from the terminals of the subset. The subset metric is indicative of a simultaneous transmission suitability measure for the terminals of the subset. The subsets may be processed in subset metric order, starting with the subset having a subset metric indicating a least suitability of simultaneous transmission. During the processing, each terminal of the subset that is not already scheduled in a group may be scheduled in a group that does not already comprise another terminal of the subset.
    Type: Grant
    Filed: October 22, 2010
    Date of Patent: June 9, 2015
    Assignee: TELEFONAKTIEBOLAGET L M ERICSSON (PUBL)
    Inventors: Anders Rosenqvist, Bengt Lindoff, Andres Reial
  • Publication number: 20150133129
    Abstract: Methods and systems are provided for allocating frequencies in a radio access network (RAN) that includes a plurality of radio nodes each associated with a cell and a services node operatively coupled to the radio nodes. In accordance with the method, the radio nodes (RNs) in the RAN are divided into a plurality of clusters of RNs. A fractional frequency reuse (FFR) pattern is generated for each cluster. Transmission resources are allocated to the radio nodes in each cluster in accordance with the respective FFR pattern that is generated for each cluster.
    Type: Application
    Filed: November 8, 2013
    Publication date: May 14, 2015
    Applicant: SpiderCloud Wireless, Inc.
    Inventors: Han-Ting Chiang, Krishna Sayana, Brian Dunn, Hithesh Nama, Peter J. Worters
  • Patent number: 9031558
    Abstract: A micro-cell base station subsystem at a premises of an enterprise includes a base transceiver system configured for wireless communication with a mobile station over a frequency band allocated for mobile traffic in a macro cellular network. A communication interface is configured to send and receive communications for one or more mobile stations when at the premises via a packet data network. A controller coupled to the base transceiver system is configured to operate the micro-cell base station subsystem to appear as a base station similar to a base station of the macro cellular network, including enabling mobile station registration. A softswitch coupled to the packet data network enables mobile station registration with the macro cellular network through the micro-cell base station subsystem.
    Type: Grant
    Filed: July 31, 2012
    Date of Patent: May 12, 2015
    Assignee: Cellco Partnership
    Inventors: Asif Nooruddin Batada, Humphrey D. Chen, Christopher M. Crawford
  • Patent number: 9020492
    Abstract: A mobile communication system including: a first wireless base station; a second wireless base station located within a service area of the first wireless base station and configured to have a service area smaller than the service area of the first wireless base station; a wireless terminal configured to couple to the first or second wireless base stations; and a communication control apparatus; wherein the communication control apparatus controls adjustment of communication parameters of the first wireless base station, instructs the second wireless base station whose communication parameters have been changed to measure a wireless quality of the first wireless base station when changes to the communication parameters of the first wireless base station have occurred, obtains the wireless quality measured by the second wireless base station, and determines whether the communication parameters of the first wireless base station were adjusted based on the wireless quality.
    Type: Grant
    Filed: October 12, 2011
    Date of Patent: April 28, 2015
    Assignee: Fujitsu Limited
    Inventor: Masato Okuda
  • Publication number: 20150111584
    Abstract: A system is provided for overlapping cells for wireless coverage in a cellular communication system. The system includes a beam-weight generator and beamformer coupled to the beam-weight generator. The beam-weight generator is configured to generate a plurality of beam weights including at least first and second sets of beam weights. And the beamformer is configured to apply the first and second sets of beam weights to signals in a cellular communication system. The cellular communication system provides coverage over a geographic region divided into cells arranged in overlapping first and second layers of cells having criteria optimized for respective, distinct first and second types of services, or communication by respective, distinct first and second types of user terminals. In this regard, the criteria are reflected in the first and second sets of beam weights.
    Type: Application
    Filed: December 22, 2014
    Publication date: April 23, 2015
    Inventors: Ying J. Feria, John M. Sullivan, Greg Busche, Murat E. Veysoglu, Lori Shima
  • Publication number: 20150111583
    Abstract: A radio detector may detect the presence of safeguarded radio frequency signals and one or more devices associated with a first network regarding the presence of the safeguarded radio frequency signals. The radio detector may be implemented as part of a device coupled to the first network, an accessory, a stand-alone detector, or as part of an infrastructure component. The radio detector may transmit a message regarding the detection of safeguarded radio frequency signals using any variety of messages, including a tone map, amplitude map, beacon message, host communication, tone mask, or the like.
    Type: Application
    Filed: October 21, 2013
    Publication date: April 23, 2015
    Applicant: QUALCOMM Incorporated
    Inventors: Purva Rameshchandra Rajkotia, Hassan Kaywan Afkhami, Deniz Rende
  • Patent number: 9014690
    Abstract: The technology in this application reduces the maintenance effort and expense to monitor the performance of a cellular radio access node (e.g., a relay or repeater) by having the cellular radio access node automatically perform radio performance monitoring on itself and providing some kind of indication of its status to an operations and maintenance node. The cellular radio access node monitors performance of a set of one or more radio characteristics of a received radio signal received by the cellular radio access node or a transmitted radio signal transmitted by the cellular radio access node and determines whether the performance exceeds an associated predetermined threshold. The cellular radio access node indicates a condition of the cellular radio access node for the operations and maintenance node based on the monitored performance. The cellular radio access node may take independent action, e.g., shutdown, restart, reduce transmit power, etc., if a monitored condition is exceeded, e.g.
    Type: Grant
    Filed: September 7, 2010
    Date of Patent: April 21, 2015
    Assignee: Telefonaktiebolaget L M Ericsson (publ)
    Inventors: Tomas Lundborg, Lars Klockar
  • Patent number: 9003038
    Abstract: Applications executed out of router memory may acquire additional bandwidth that is not being used by other applications, in order to speed up network traffic. Scavenging may occur up to a point where current congestion is detected, at which point any scavenged bandwidth is relinquished and the application returns to its prescribed limit. After current congestion is mitigated, scavenging may occur up to a limit below the point where congestion was detected. After a predetermined interval, additional scavenging may occur beyond this limit until a preset bandwidth limit is reached.
    Type: Grant
    Filed: October 3, 2012
    Date of Patent: April 7, 2015
    Assignee: QLOGIC, Corporation
    Inventor: Charles Micalizzi, Jr.
  • Patent number: 8989796
    Abstract: A radio communication system including a relaying apparatus and a base station, at an installment of a new base station, a parameter is autonomously adjusts a parameter to maintain a communication of the relaying apparatus. The new base station transmits a radio signal while increasing a transmission power, and the relaying apparatus, upon detecting the radio signal, transmits a signal indicating detection of the signal to an existing base station. The existing base station, upon receiving the signal indicating the detection, reduces an transmission power thereof to a minimum power to maintain a communication with a relaying apparatus and adjusts the parameter to set the transmission power to the minimum transmission power. The new base station, based on the transmission power at a time when the relaying apparatus has detected the radio signal, sets the parameter of the transmission power.
    Type: Grant
    Filed: April 25, 2011
    Date of Patent: March 24, 2015
    Assignee: KYOCERA Corporation
    Inventor: Susumu Asaoka
  • Patent number: 8989751
    Abstract: A conventional wireless device constantly measures the signal strength of its server base station and the strength of signals from surrounding base stations for handoff purposes. The wireless device transmits this information to its serving base station, which discards the information a short time afterward, following handoff. The present system and method store the formerly discarded information in one of several existing network elements or in a separate computer system. This information is used to generate a carrier to interference ratio, which indicates the level of interference between station pairs, and to also generate a carrier to interference matrix, including identifying potential interference for each station pair. The frequency of occurrences during predetermined desired periods of time and the volume of traffic affected by each level of interference may also be calculated. This provides comprehensive, continuous, real-time information for wireless frequency planning.
    Type: Grant
    Filed: February 7, 2014
    Date of Patent: March 24, 2015
    Assignee: AT&T Mobility II LLC
    Inventor: Dipesh Hasmukhlal Shah
  • Patent number: 8989674
    Abstract: A cellular communications system is described in which a mobile cellular device can, if necessary, obtain cell measurements for cells contained within a first cell list after it has received a second cell list. The mobile device then reports the cell measurements for cells within both lists so that a best candidate cell is less likely to be discarded in a cell handover procedure. A network node is also disclosed that can receive cell measurements for cells within a first cell list after the node has issued a second cell list. The node then uses the received cell measurement data to control a handover procedure.
    Type: Grant
    Filed: March 25, 2010
    Date of Patent: March 24, 2015
    Assignee: Lenovo Innovations Limited (Hong Kong)
    Inventors: Stuart Findlay, Michael Nosley
  • Patent number: 8982925
    Abstract: A communications node operable to communicate with another communications node over a communications channel having a plurality of frequency resources, the communications node includes data defining a division of the communications channel into a plurality of contiguous sub-bands each having N frequency resources, wherein each frequency resource in a sub-band has a corresponding frequency resource in each of the other sub-bands, data defining an initial allocation of the frequency resources, a resource determination module operable to apply a frequency shift to the initially allocated frequency resources in accordance with a frequency hopping sequence to determine frequency resources to use for communicating information with the other communications node, wherein the frequency shift applied moves the initially allocated frequency resources to corresponding frequency resources in another sub-band, a transceiver for communicating information with the other communications node using the determined frequency reso
    Type: Grant
    Filed: October 2, 2013
    Date of Patent: March 17, 2015
    Assignee: NEC Corporation
    Inventors: Robert Arnott, Yassin Aden Awad
  • Patent number: 8971377
    Abstract: A communications node includes data defining a division of a communications channel into a plurality of contiguous sub-bands each having N frequency resources, data defining an initial allocation of the frequency resources, a resource determination module operable to apply a frequency shift to the initially allocated frequency resources in accordance with a frequency hopping sequence to determine frequency resources to use for communicating information according to the following: y={x+a(t)N} mod NRB where NRB is the total number of frequency resources in the transmission band; N is the number of contiguous frequency resources in each sub-band; x is the initially allocated frequency resource; y is the frequency hopped resource; t is a time counter; a(t) is the frequency hopping shift applied at time point t, and is an integer value from the set {0, 1, . . . , S?1}; and S is the number of sub-bands; and a transceiver.
    Type: Grant
    Filed: October 2, 2013
    Date of Patent: March 3, 2015
    Assignee: NEC Corporation
    Inventors: Robert Arnott, Yassin Aden Awad
  • Patent number: 8971911
    Abstract: The cognitive radio system and method uses a wideband chirp signal for characterization of the spectra that a mobile radio may use. A cognitive radio base station broadcasts the low power reference wideband chirp signal with bandwidth covering the sensed spectrum. At the receiver, spectral resolution in the presence of white noise is achieved by cross-correlating the chirp signal with a locally generated copy of itself (i.e., matched filtering). A Fast Fourier Transform (FFT) is applied to the output of this matched filtering. The FFT output is fed to a decision circuitry, where a threshold value is set to decide the minimum amplitude of utilized frequencies. This process eases sensing computational complexity and improves the quality of sensing, thereby offering enhanced cognition at the cognitive radio receiver.
    Type: Grant
    Filed: February 27, 2013
    Date of Patent: March 3, 2015
    Assignee: King Abdulaziz University
    Inventor: Ahmed M. Barnawi
  • Patent number: 8971901
    Abstract: Systems and method for allocation and optimization of sub-carriers by a plurality of cells based, at least in part, on aspects of user equipment utilizing the wireless communication network. A wireless network management component classifies user equipment with at least a portion of the wireless communication network as cell edge user equipment or cell central user equipment. Based on the classification of the user equipment, the management component determines resource requirements for the cells. The resource requirements can include the designation of sub-carriers as primary sub-carriers and associated power levels based on the designation for the group of cells in the wireless network. Additionally, each cell within the wireless network can utilize the designation of sub-carriers and association of power levels in configuring communications with user equipment.
    Type: Grant
    Filed: July 23, 2012
    Date of Patent: March 3, 2015
    Assignee: Intel Corporation
    Inventors: Shankarakrishnan Venkatraman, Ali Fakoorian
  • Patent number: 8965385
    Abstract: A relay and distribution apparatus is provided for a cellular communication system. The relay and distribution apparatus includes an antenna system configured to lay down beams in overlapping first and M second N-cell frequency reuse patterns. The first frequency reuse pattern may be for communication of control channels of a cellular communication system, and the second frequency reuse patterns may be for communication of traffic channels exclusive of control channels of the cellular communication system. The second frequency reuse patterns may be staggered with one another. And cells of the second frequency reuse patterns may have a size only a fraction of which is for transmission of traffic channels any of which may be assignable through a control channel of the first reuse frequency pattern.
    Type: Grant
    Filed: January 4, 2013
    Date of Patent: February 24, 2015
    Assignee: The Boeing Company
    Inventors: Ying J Feria, Greg Busche, Murat E Veysoglu, John M Sullivan, Lori Shima, Becky Xiao-Chun Li
  • Patent number: 8965389
    Abstract: Techniques are disclosed for reducing channel information feedback in communication networks. For example, a method comprises the following steps. A set of mobile terminals and a set of base stations designated to participate in a coordinated multipoint transmission protocol in a communication network are identified. One or more unique downlink communication resource blocks are assigned to each designated mobile terminal that is located in a given first sector of a designated base station. As such, each designated mobile terminal in the first sector of the designated base station: (i) performs a channel state estimation process in response to respective signals received from the designated base stations in the one or more unique downlink communication resource blocks assigned to that designated mobile terminal; and (ii) transmits resulting channel state information back to at least one of the designated base stations.
    Type: Grant
    Filed: January 31, 2011
    Date of Patent: February 24, 2015
    Assignee: Alcatel Lucent
    Inventors: Dragan Samardzija, Theodore Sizer, Reinaldo A. Valenzuela
  • Patent number: 8958800
    Abstract: A radio communication system includes a first radio base station, second radio base stations, and mobile stations. Each of the mobile stations measures a first reception characteristic value and a second reception characteristic value for respective radio waves. The first radio base station determines the radio base station to which each of the mobile stations should connect, according to the first reception characteristic value, and classifies the mobile stations into a first mobile-station group and a second mobile-station group according to the second characteristic values.
    Type: Grant
    Filed: July 18, 2012
    Date of Patent: February 17, 2015
    Assignee: NTT DOCOMO, INC.
    Inventors: Akihito Morimoto, Nobuhiko Miki, Masashige Shirakabe
  • Patent number: 8948747
    Abstract: A system is provided for overlapping cells for wireless coverage in a cellular communication system. The system includes a beam-weight generator and beamformer coupled to the beam-weight generator. The beam-weight generator is configured to generate a plurality of beam weights including at least first and second sets of beam weights. And the beamformer is configured to apply the first and second sets of beam weights to signals in a cellular communication system. The cellular communication system provides coverage over a geographic region divided into cells arranged in overlapping first and second layers of cells having criteria optimized for communication by respective, distinct first and second types of user terminals. In this regard, the criteria are reflected in the first and second sets of beam weights.
    Type: Grant
    Filed: February 13, 2013
    Date of Patent: February 3, 2015
    Assignee: The Boeing Company
    Inventors: Ying J. Feria, John M. Sullivan, Greg Busche, Murat E. Veysoglu, Lori Shima
  • Patent number: 8942712
    Abstract: A fractional frequency reuse method for assigning physical resource units of a contiguous frequency band to sectors of cells is disclosed.
    Type: Grant
    Filed: August 20, 2013
    Date of Patent: January 27, 2015
    Assignee: NEC Laboratories America, Inc.
    Inventors: Honghai Zhang, Narayan Prasad, Sampath Rangarajan
  • Patent number: 8942082
    Abstract: A source node selects a plurality of original data components to transfer to at least one destination node. A plurality of transmitting nodes cooperatively encodes the original data components to generate a plurality of subspace coded components and a corresponding code matrix. Each of the transmitting nodes transmits a subset of the plurality of subspace coded components and corresponding code matrix, wherein at least one of the transmitting nodes has a rank that is insufficient for decoding the plurality of subspace coded components. A destination node may employ a plurality of receiving nodes to cooperatively receive a plurality of subspace coded components and their corresponding code vectors, wherein the rank of at least one of the receiving nodes is insufficient for decoding the coded components. The destination node builds up the dimension of the subspace spanned by code vectors it collects from the receiving nodes so it can decode the coded components.
    Type: Grant
    Filed: January 30, 2014
    Date of Patent: January 27, 2015
    Assignee: Genghiscomm Holdings, LLC
    Inventor: Steve J Shattil
  • Patent number: 8942148
    Abstract: A method and an apparatus for switching a Frequency Assignment (FA) by a base station in a wireless communication system are provided. The method includes, upon detecting movement of the base station, communicating with a mobile terminal using a first FA via a first FA-transceiver among a plurality of FA-transceivers which process signals transceived via each of the plurality of FAs, and selecting, upon detecting a change in a wireless environment caused by the movement, a second FA from among the plurality of FAs, operating a second FA-transceiver which processes signals transceived via the second FA, transmitting, to the mobile terminal, a scanning-instructing message for instructing the reference signal transmitted via the second FA to be scanned, and switching the first FA to the second FA in accordance with the result of the scanning received from the mobile terminal in response to the scanning-instructing message.
    Type: Grant
    Filed: January 19, 2011
    Date of Patent: January 27, 2015
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Ki-Young Han, Jo-Seph Jeon, Byoung-Ha Yi
  • Patent number: 8929901
    Abstract: A method, NodeB and User Equipment for TDD operation in a communication system operating in TDD mode in a frequency band allocated for FDD operation. Preferably, operation is in TDD uplink and downlink mode in a first frequency band designated or normally used for FDD uplink communication, and in TDD downlink-only mode in a second frequency band designated or normally used for FDD downlink communication. The invention provides the following advantages: Provides a flexible method to deploy a time division duplex architecture in frequency division duplex spectrum. Allows flexible use of system capacity by adjusting the uplink and downlink capacity split. Removes previous FDD duplex restrictions.
    Type: Grant
    Filed: October 1, 2013
    Date of Patent: January 6, 2015
    Assignee: Sony Corporation
    Inventors: William John Jones, Joseph Chung Shing Cheung, Alan Edward Jones
  • Patent number: 8929900
    Abstract: A method, NodeB and User Equipment for TDD operation in a communication system operating in TDD mode in a frequency band allocated for FDD operation. Preferably, operation is in TDD uplink and downlink mode in a first frequency band designated or normally used for FDD uplink communication, and in TDD downlink-only mode in a second frequency band designated or normally used for FDD downlink communication. The invention provides the following advantages: Provides a flexible method to deploy a time division duplex architecture in frequency division duplex spectrum. Allows flexible use of system capacity by adjusting the uplink and downlink capacity split. Removes previous FDD duplex restrictions.
    Type: Grant
    Filed: December 28, 2010
    Date of Patent: January 6, 2015
    Assignee: Sony Corporation
    Inventors: William J. Jones, Joseph C. Cheung, Alan E. Jones
  • Patent number: 8929931
    Abstract: A graphical user interface displays a proposed site plan of one or more new base stations with respect to existing network infrastructure in a geographical region. While in the field, an installation specialist can perform an in-person survey of the geographical region to determine whether a proposed location is suitable for installation of a wireless base station. The installation specialist may identify an obstacle that would inhibit a newly proposed wireless base station from providing desired coverage if installed at the proposed location. Via input to the graphical user interface, the installation specialist proposes an alternative location in which to install the new base station. A processor performs a validity check and provides feedback indicating whether installation of the new base station at the alternative location is acceptable. The graphical user interface also can support collection of site survey data to monitor progress of the installation.
    Type: Grant
    Filed: October 25, 2011
    Date of Patent: January 6, 2015
    Assignee: Time Warner Cable Enterprises LLC
    Inventors: Bryan Goldberg, John Kim, Praveen Srivastava, Ahmed Bencheikh
  • Patent number: 8923875
    Abstract: The present invention relates to methods and apparatuses for controlling cell configuration in a cellular network, wherein a cell identity and a local cell spectrum resource entity or profile are assigned to an access device in response to a result of sensing a local radio environment at said access device to detect possible neighbor cells. The assigned local cell spectrum resource entity or profile is used to allocate cell spectrum resource from a shared multi-operator spectrum to said access device.
    Type: Grant
    Filed: March 24, 2009
    Date of Patent: December 30, 2014
    Assignee: Nokia Siemens Networks Oy
    Inventors: Frank Frederiksen, Istvan Zsolt Kovacs, Klaus Ingemann Pedersen, Vinh Van Phan
  • Patent number: 8923242
    Abstract: In the present invention, a wireless transmission system includes a plurality of mobile stations in a cell area, and a base station. The base station divides each of an uplink frame and a downlink frame into a plurality of blocks, assigns a specific one of the plurality of blocks to each of the plurality of the mobile stations, assigns a specific frequency channel to the mobile station, and notifies the specific block and the specific frequency channel to the mobile station. The length of each of the plurality of blocks is optional, and a sum of the lengths of the plurality of blocks is equal to the length of the frame.
    Type: Grant
    Filed: January 5, 2012
    Date of Patent: December 30, 2014
    Assignee: NEC Corporation
    Inventor: Kenji Koyanagi
  • Patent number: 8923881
    Abstract: To start secondary use of a spectrum without causing an adverse effect on a communication service for primary usage, provided is a communication control method including the steps of acquiring data related to a communication environment surrounding a first communication device at the first communication device, determining that a second communication service using a part or whole of a spectrum assigned to a first communication service is available when the acquired data related to the communication environment satisfies a first condition, and permitting usage of the second communication service when the data related to the communication environment satisfies a second condition at the first communication device or a second communication device.
    Type: Grant
    Filed: January 12, 2010
    Date of Patent: December 30, 2014
    Assignee: Sony Corporation
    Inventors: Ryo Sawai, Ryota Kimura
  • Patent number: 8918108
    Abstract: Systems and methods for frequency reuse in a multi-cell deployment model of a wireless backhaul network are shown. According to embodiments, a wireless backhaul network includes a plurality of cells, each of which includes one or more hubs supporting wireless backhaul communication utilizing a cell deployment geometry and wireless communication frequency assignments adapted to facilitate heterogeneous cell configurations within the wireless backhaul network. In particular, embodiments provide frequency planning for initial deployment, build out, and expansion of a plurality of cells providing wireless backhaul communication so as to implement a predetermined wireless frequency reuse pattern providing alternating utilization of a plurality of wireless communication frequencies by the cells of the backhaul network.
    Type: Grant
    Filed: March 22, 2012
    Date of Patent: December 23, 2014
    Assignee: Taqua WBH, LLC
    Inventors: Seyed M. Arad, Frank van Heeswyk
  • Patent number: RE45302
    Abstract: A communications system network that enables secondary use of spectrum on a non-interference basis is disclosed. Each secondary transceiver measures the background spectrum. The system uses a modulation method to measure the background signals that eliminates self-generated interference and also identifies the secondary signal to all primary users via on/off amplitude modulation, allowing easy resolution of interference claims. The system uses high-processing gain probe waveforms that enable propagation measurements to be made with minimal interference to the primary users. The system measures background signals and identifies the types of nearby receivers and modifies the local frequency assignments to minimize interference caused by a secondary system due to non-linear mixing interference and interference caused by out-of-band transmitted signals (phase noise, harmonics, and spurs).
    Type: Grant
    Filed: August 15, 2013
    Date of Patent: December 23, 2014
    Assignee: Shared Spectrum Company
    Inventor: Mark Allen McHenry