Combined Time Division And Frequency Division Patents (Class 370/478)
  • Patent number: 11405974
    Abstract: A system is disclosed in which a base station receives, from a communication device, a request for establishing a communication connection via the base station. The base station obtains information indicating from where a context associated with a previously established communication connection can be retrieved; retrieves the context associated with the previously established communication connection based on the obtained information; and resumes the previously established communication connection with the communication device using the retrieved context.
    Type: Grant
    Filed: January 6, 2017
    Date of Patent: August 2, 2022
    Assignee: NEC CORPORATION
    Inventor: Sivapathalingham Sivavakeesar
  • Patent number: 11337204
    Abstract: A communication system is presented in which a base station is provided for communicating with a plurality of mobile communication devices in a cellular communication system. The base station operates one of more communication cells and communicates subframes, with each of the plurality of communication devices within the cell(s), each comprising the communication resources of a control region for communicating a control channel and the communication resources of a data region for communicating a respective data channel. The base station communicates a control channel having a first DMRS sequence in a control region of some subframes and a control channel having a second DMRS sequence in a control region of other subframes. The second control channel may be transmitted in a radio beam focussed spatially in a direction of a communication device. The first control channel may be transmitted omnidirectionally throughout the cell(s).
    Type: Grant
    Filed: June 5, 2020
    Date of Patent: May 17, 2022
    Assignee: NEC COPRORATION
    Inventors: Yassin Aden Awad, Yasushi Maruta, Toshifumi Sato
  • Patent number: 11113955
    Abstract: A data collection system includes sensors which are synchronized with each other and an optical signal distributor, wherein each of the sensors comprises a first delay unit which delays a second electrical signal for a first delay time set such that a sum of the first delay time and a first conversion time is same in all of the sensors, and the optical signal distributor comprises second delay units each of which delays a first electrical signal for a second delay time set such that all of sums of the second delay times and conversion times are same as each other.
    Type: Grant
    Filed: September 6, 2017
    Date of Patent: September 7, 2021
    Assignee: TOSHIBA MITSUBISHI-ELECTRIC INDUSTRIAL SYSTEMS CORPORATION
    Inventor: Noriyuki Maehata
  • Patent number: 11044743
    Abstract: Provided is a method for designing downlink control channel for satisfying requirement of the different usage scenarios from each other in a next-generation/5G radio access network which has been discussed in the 3rd generation partnership project (3GPP). In particular, a method of a base station may be provided for transmitting/receiving data in a next-generation radio access network. The method may include configuring a time domain scheduling unit made up of at least one OFDM symbol for each user equipment, allocating a downlink data channel transmission resource with the time domain scheduling unit for a first user equipment, and puncturing a part of the downlink data channel transmission resource for the first user equipment and allocating the punctured resource to the downlink data channel transmission resource for a second user equipment.
    Type: Grant
    Filed: August 17, 2017
    Date of Patent: June 22, 2021
    Assignee: KT CORPORATION
    Inventors: Kyujin Park, Woo-jin Choi
  • Patent number: 10992338
    Abstract: A secure wireless IoT platform configured to provide secure channel hopping for transmitting or receiving messages over a television whitespace spectrum. The platform includes a client device and a base station in communication with a gateway device which provides internet access. A secret key is determined based on the transmission loss associated with the transmission and potentially a new parameter. A next hopping channel is determined in a safe manner to ensure secure communications between the multiple devices.
    Type: Grant
    Filed: June 19, 2020
    Date of Patent: April 27, 2021
    Assignee: MICROSOFT TECHNOLOGY LICENSING, LLC
    Inventors: Nissanka Arachchige Bodhi Priyantha, Deepak Vasisht, Ranveer Chandra, Heping Shi
  • Patent number: 10852120
    Abstract: Length metrology apparatuses and methods are disclosed for measuring both specular and non-specular surfaces with high accuracy and precision, and with suppressed phase induced distance errors. In one embodiment, a system includes a laser source exhibiting a first and second laser outputs with optical frequencies that are modulated linearly over large frequency ranges. The system further includes calibration and signal processing portions configured to determine a calibrated distance to at least one sample.
    Type: Grant
    Filed: August 26, 2019
    Date of Patent: December 1, 2020
    Assignee: Bridger Photonics, Inc.
    Inventors: Michael Thorpe, Aaron Kreitinger, Randy Reibel
  • Patent number: 10827372
    Abstract: A method for transmitting data within a vehicle comprises evaluating a connection quality of a wireless connection between an antenna arranged external to the vehicle and a receiving unit of the vehicle, demodulating a signal received by the receiving unit, feeding the demodulated signal to a scaling unit, and providing an output data with the scaling unit having a data rate determined as a function of the connection quality.
    Type: Grant
    Filed: December 28, 2018
    Date of Patent: November 3, 2020
    Assignee: TE Connectivity Germany GmbH
    Inventors: Christian Mandel, Andreas Winkelmann, Bert Bergner, Christian Rusch
  • Patent number: 10812180
    Abstract: According to one embodiment, a communication repeater system includes a master station device and radio frequency units. The radio frequency units each convert a signal from each of base station system into an optical digital signal for transmission to the master station device. The base station systems establish communication by time division duplex scheme.
    Type: Grant
    Filed: August 28, 2019
    Date of Patent: October 20, 2020
    Assignees: Kabushiki Kaisha Toshiba, Toshiba Infrastructure Systems & Solutions Corporation
    Inventor: Toshinori Doi
  • Patent number: 10644996
    Abstract: A route determining method and apparatus, and a communications device are provided. The method includes: obtaining startpoint information and endpoint information of a required path, where the startpoint information includes a sequence number of a startpoint POD and a sequence number of a startpoint edge switch, and the endpoint information includes a sequence number of an endpoint POD and a sequence number of an endpoint edge switch; determining, from an n-dimensional Latin square, an element whose row is the sequence number of the startpoint edge switch and column is the sequence number of the endpoint edge switch; and if the sequence number of the startpoint POD is the same as the sequence number of the endpoint POD, determining that the required path is the startpoint edge switch, an aggregation switch corresponding to the element in the POD, and the endpoint edge switch.
    Type: Grant
    Filed: January 17, 2019
    Date of Patent: May 5, 2020
    Assignee: HUAWEI TECHNOLOGIES CO., LTD.
    Inventors: Yuan-Hsun Lo, Wing Shing Wong, Yong Huang
  • Patent number: 10637538
    Abstract: Embodiments provide an information processing method, a base station, and user equipment. The method includes determining multiple subband groups, where the multiple subband groups are obtained by dividing multiple physical resource blocks corresponding to resource elements (REs) originally occupied by a CSI-RS, and each subband group in the multiple subband groups includes at least one subband. The method also includes determining a reference signal corresponding to each subband group in the multiple subband groups, where the reference signal corresponding to each subband group is generated by performing a precoding operation on the CSI-RS originally carried in first bearer REs in each subband in each subband group. Additionally, the method includes transmitting, using the first bearer REs in each subband group in the multiple subband groups, the reference signal corresponding to each subband group.
    Type: Grant
    Filed: November 15, 2018
    Date of Patent: April 28, 2020
    Assignee: Huawei Technologies Co., Ltd.
    Inventor: Chao Li
  • Patent number: 10420078
    Abstract: Systems and methodologies are described that facilitate defining new control channels in legacy wireless networks. Control data resources for new systems can be defined over resources reserved for general data communications in the legacy wireless network specification. In this regard, legacy devices can still be supported by devices implementing new control data resources, and the new control data resources can avoid substantial interference that is typically exhibited over legacy control and/or reference signal resources by instead using the general data resources. In addition, new system devices can avoid scheduling data communication resources over the new control resources to create a substantially non-interfered global control segment. Control data can be transmitted over the segment using beacon-based technologies, reuse schemes, and/or the like.
    Type: Grant
    Filed: July 1, 2015
    Date of Patent: September 17, 2019
    Inventors: Aamod Khandekar, Juan Montojo, Avneesh Agrawal
  • Patent number: 10224754
    Abstract: A wireless power transmission and charging system, and a communication method of the wireless power transmission and charging system are provided. In one embodiment, a resonance frequency control method of a wireless power transmitter may include: generating communication power used for communication in a plurality of target devices using a reference resonance frequency; transmitting communication power to the plurality of target devices; transmitting charging power to the plurality of target devices; and adjusting the reference resonance frequency based on a reflected wave of the charging power, the amount of power received by one or more of the target devices, the amount of the charging power, the transmission efficiency of the charging power, or any combination thereof.
    Type: Grant
    Filed: April 1, 2016
    Date of Patent: March 5, 2019
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Nam Yun Kim, Sang Wook Kwon, Yun Kwon Park
  • Patent number: 10205621
    Abstract: A transmitting apparatus and a transmitting method are provided. The transmitting apparatus comprises: an encoder configured to encode data for a plurality of user equipments into corresponding encoded signals, respectively; a modulator configured to perform a joint modulation on the encoded signals for the plurality of user equipments to generate modulated signals, wherein the modulator performs the joint modulation by mapping bits of the encoded signals for the plurality of user equipments to a symbol corresponding to each constellation point of a constellation map of the modulated signals so that respective constellation points satisfy a Gray mapping rule; a transmitter configured to transmit the modulated signals.
    Type: Grant
    Filed: July 30, 2015
    Date of Patent: February 12, 2019
    Assignee: NTT DoCoMo, Inc.
    Inventors: Chunlin Yan, Anass Benjebbour, Yang Lan, Anxin Li, Huiling Jiang
  • Patent number: 10181761
    Abstract: A relay apparatus in a wireless power transmission system includes a relay power reception antenna that receives power transmission alternating current power from a power transmission power transmission antenna, a relay rectifier that converts the power transmission alternating current power into relay direct current power, a relay inverter circuit that converts the relay direct current power into relay alternating current power, and a relay power transmission antenna that wirelessly transmits the relay alternating current power. When the relay apparatus has received binary relay received data, the relay apparatus reverses a sign of the binary relay received data and eliminates a difference between a first voltage of the relay direct current power and a second voltage of the relay direct current power on the basis of the reversed binary relay received data.
    Type: Grant
    Filed: June 22, 2017
    Date of Patent: January 15, 2019
    Assignee: Panasonic Intellectual Property Management Co., Ltd.
    Inventors: Tsutomu Sakata, Hiroshi Kanno, Eiji Takahashi, Satoru Kikuchi
  • Patent number: 10075858
    Abstract: Systems and methods are disclosed for measuring received signal power at a mobile terminal in a cellular communications network in such a manner as to efficiently provide highly accurate received signal power measurements in the presence of strong inter-cell interference. In one embodiment, in order to measure received signal power for a measured cell, a mobile terminal selects weighting parameters for a number of time-frequency samples of a reference signal of the measured cell based, at least in part, on inter-cell interference from one or more synchronized interfering cells and inter-cell interference from one or more non-synchronized interfering cells. The mobile terminal applies the time-frequency samples of the reference signal of the measured cell and the corresponding weighting parameters to corresponding time-frequency samples of a received signal from the measured cell in order to obtain a measurement of the received power for the measured cell.
    Type: Grant
    Filed: September 20, 2012
    Date of Patent: September 11, 2018
    Assignee: Telefonaktiebolaget L M Ericsson (publ)
    Inventors: Chester Park, Stephen Grant, Bengt Lindoff
  • Patent number: 10051611
    Abstract: A technology for device to device (D2D) communication scheduling is disclosed. A D2D device can be synchronized with a base station of a cellular system. A sub-frame symbol boundary can be identified in the cellular system for the D2D communication. A resource for a D2D communication can be allocated from the D2D device to another D2D device within the sub-frame boundary of the cellular system. The D2D device can be switched to perform a D2D communication with another D2D device in proximity with the D2D device, wherein the other D2D device is substantially synchronized with the base station of the cellular system. The D2D device can communicate with the other D2D device within at least one symbol boundary time within the selected subframe.
    Type: Grant
    Filed: March 28, 2014
    Date of Patent: August 14, 2018
    Assignee: INTEL IP CORPORATION
    Inventors: Qinghua Li, Honggang Li, Yuan Zhu, Huaning Niu, Alexey Khoryaev
  • Patent number: 9735831
    Abstract: Systems, apparatuses and methods for synchronizing communication actions between multiple communication devices by accounting for discrepancies between timing functionality in communicating devices. A time value indicative of a remote device's view of current time is received. Where it is determined that the time value differs from a locally generated view of current time by at least an established amount, the range of time in which communications signals with the remote device will be monitored and transmitted is extended.
    Type: Grant
    Filed: September 22, 2009
    Date of Patent: August 15, 2017
    Assignee: Honeywell International Inc.
    Inventors: Robert Juntunen, Steven Nichols, Kenneth Kidder
  • Patent number: 9712295
    Abstract: The present invention relates to a method and device for inter-cluster cooperative communication in a mobile communication system. A central unit operating method for inter-cluster cooperative communication in a mobile communication system comprises processes comprising: a process of receiving channel data from serving sectors in a serving cluster; a process of respectively receiving the magnitude of change of a target function for scheduling depending on whether the serving sector is blank, from neighboring sectors in neighboring clusters of the serving cluster; and a process of determining the blank pattern of the serving cluster, by using the channel data received from the serving sectors, and the magnitude of change of the target function received from the neighboring sectors in neighboring clusters.
    Type: Grant
    Filed: March 13, 2013
    Date of Patent: July 18, 2017
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Sung-Woo Park, Nam-Koo Kang, Hee-Won Kang, Jae-Yun Ko
  • Patent number: 9698484
    Abstract: The invention relates to a method for automatically adjusting a plurality of tunable passive antennas, for instance a plurality of tunable passive antennas of a radio transceiver using several antennas simultaneously. The invention also relates to an automatically tunable antenna array using this method. An automatically tunable antenna array of the invention has 4 user ports, and comprises: 4 tunable passive antennas, the 4 tunable passive antennas operating simultaneously in a given frequency band and forming a multiport antenna array; 4 sensing units; 4 feeders; a signal processing unit delivering a tuning instruction; and a tuning control unit, the tuning control unit receiving the tuning instruction from the signal processing unit, the tuning control unit delivering tuning control signals to the tunable passive antennas, the tuning control signals being determined as a function of the tuning instruction.
    Type: Grant
    Filed: November 3, 2016
    Date of Patent: July 4, 2017
    Assignee: Tekcem
    Inventors: Frédéric Broyde, Evelyne Clavelier
  • Patent number: 9532301
    Abstract: A method, an apparatus, and a computer program product for wireless communication are provided. In one configuration, the apparatus sends a transmission requesting a peer discovery signal and indicating whether the transmission includes a unicast request or a multicast request. In addition, the apparatus receives at least one peer discovery signal response based on the transmission. In another configuration, the apparatus receives a transmission requesting a peer discovery signal and indicating whether the transmission includes a unicast request or a multicast request. In addition, the apparatus sends a peer discovery signal response in response to the received transmission and on resources determined based on the indication whether the transmission includes a unicast request or a multicast request.
    Type: Grant
    Filed: September 26, 2013
    Date of Patent: December 27, 2016
    Assignee: QUALCOMM INCORPORATED
    Inventors: Kapil Gulati, Shailesh Patil, Saurabha Rangrao Tavildar, Bilal Sadiq
  • Patent number: 9398354
    Abstract: An integrated assembly for switching optical signals. The integrated assembly includes two subassemblies. For instance, the subassemblies might be a shelf assembly and the integrated assembly might be a rack assembly in which the shelf assemblies are connected. Each of the subassemblies includes optical interfaces configured to support communication of optical channels to and from the integrated assembly using the corresponding subassembly. Each subassembly might also include multiple switch fabric assemblies each including a switching mechanism. An inter-subassembly communication interface is provided between each subassembly. An optical signal may be switched from one of the subassemblies (e.g., one of the shelves) to another even though there is no intervening switching circuitry in between the different subassemblies. Instead, the switching operation is distributed between the subassemblies.
    Type: Grant
    Filed: February 20, 2013
    Date of Patent: July 19, 2016
    Assignee: XTERA COMMUNICATIONS, INC.
    Inventor: James A. Hess
  • Patent number: 9319214
    Abstract: Radio frequency (RF) circuitry, which includes a time division duplex (TDD)/frequency division duplex (FDD) driver stage, a TDD final stage, an FDD final stage, and power directing circuitry, is disclosed. The power directing circuitry is coupled between the TDD/FDD driver stage and the TDD final stage, and is further coupled between the TDD/FDD driver stage and the FDD final stage.
    Type: Grant
    Filed: May 6, 2013
    Date of Patent: April 19, 2016
    Assignee: RF Micro Devices, Inc.
    Inventor: Nadim Khlat
  • Patent number: 9136708
    Abstract: A system and method for the transport and distribution of both AC (alternating current) power and DC (direct current) power over wiring infrastructure normally used for distributing AC power only, for example, residential and/or commercial buildings' electrical wires is disclosed and taught. The system and method permits the combining of AC and DC power sources and the simultaneous distribution of the resulting power over the same wiring. At the utilization site a complementary device permits the separation of the DC power from the AC power and their reconstruction, for use in conventional AC-only and DC-only devices.
    Type: Grant
    Filed: January 19, 2012
    Date of Patent: September 15, 2015
    Assignee: Alliance For Sustainable Energy, LLC
    Inventor: Luigi Gentile Polese
  • Patent number: 9077592
    Abstract: A low phase noise frequency synthesizer includes arranged in series, a first mixer receiving a reference signal at a reference frequency Fr, a loop filter and a voltage-controlled oscillator delivering a microwave signal at a second frequency FO slaved to a multiple of reference frequency Fr, the frequency synthesizer further includes: means of multiplication of the frequency FO of the microwave signal by a factor N strictly greater than 1, means of correction of the frequency N·FO of the output signal of the multiplication means to restore frequency N·FO to an interval [FOmin, FOmax] where output frequency FO would vary if multiplication factor N=1, means of division of the frequency Fj of the output signal of the correction means by a factor equal to the expected ratio between frequency Fj and reference frequency Fr, the frequency division means connected at output to the second input of the first mixer.
    Type: Grant
    Filed: March 20, 2012
    Date of Patent: July 7, 2015
    Assignee: Thales
    Inventor: Herve Simon
  • Patent number: 9008032
    Abstract: A frequency band setting apparatus and method are provided. The frequency band setting apparatus may include a calculation unit and a control unit. The calculation unit may calculate a basic frequency band of each of a plurality of Access Points (APs), and the control unit may divide a frequency band, which is available to the plurality of APs, into each of the calculated basic frequency bands and a common frequency band.
    Type: Grant
    Filed: September 13, 2010
    Date of Patent: April 14, 2015
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: In Sun Lee, Kyung Hun Jang, Chan Soo Hwang
  • Patent number: 9008110
    Abstract: A reference signal multiplexing method for multiple mobile stations includes: grouping together control signals for the multiple mobile stations; and multiplexing reference signals corresponding to the control signals by CDM over the same bandwidth as that of grouped control signals.
    Type: Grant
    Filed: July 6, 2012
    Date of Patent: April 14, 2015
    Assignee: NEC Corporation
    Inventors: Takamichi Inoue, Yoshikazu Kakura
  • Patent number: 9008124
    Abstract: Systems and methods for designing, using, and/or implementing media access control (MAC) protocols with subbanding are described. In some embodiments, a method may include receiving a beacon packet during one of a plurality of beacon slots of a superframe, each beacon slot corresponding to one of a plurality of different downlink subbands. The method may also include identifying, based on the received beacon packet, contention access periods following the beacon slots, each of the contention access periods corresponding to one of a plurality of different uplink subbands. The method may further include transmitting an information packet over each of the plurality of uplink subbands during the contention access periods. Then, the method may include receiving, during a guaranteed time slot following the contention access periods, an indication of a selected one of the plurality of uplink subbands to be used in a subsequent communications.
    Type: Grant
    Filed: February 29, 2012
    Date of Patent: April 14, 2015
    Assignee: Texas Instruments Incorporated
    Inventors: Kumaran Vijayasankar, Shu Du, Anand G. Dabak, Badri N. Varadarajan, Il Han Kim, Xiaolin Lu
  • Patent number: 9008034
    Abstract: A disclosed base station transmits a broadcast channel to a user device a predefined number of times in a predetermined cycle for communication with the user device. The base station includes a repetition unit configured to repeat the broadcast channel, after the broadcast channel is channel-coded, for the predefined number of times to generate multiple broadcast channels; and a signal waveform changing unit configured to process the generated broadcast channels such that the processed broadcast channels have different signal waveforms. Positions of the broadcast channels in the order of transmission in the predetermined cycle are associated with the signal waveforms of the broadcast channels.
    Type: Grant
    Filed: July 20, 2012
    Date of Patent: April 14, 2015
    Assignee: NTT DOCOMO, INC.
    Inventors: Motohiro Tanno, Yoshihisa Kishiyama, Kenichi Higuchi, Mamoru Sawahashi
  • Publication number: 20150085883
    Abstract: Systems and methods for designing, using, and/or implementing hybrid communication networks are described. In various embodiments, these systems and methods may be applicable to power line communications (PLC). For example, one or more of the techniques disclosed herein may include methods to coordinate medium-to-low voltage (MV-LV) and low-to-low voltage (LV-LV) PLC networks when the MV-LV network operates in a frequency subband mode and the LV-LV network operates in wideband mode (i.e., hybrid communications). In some cases, MV routers and LV routers may have different profiles. For instance, MV-LV communications may be performed using MAC superframe structures, and first-level LV to lower-level LV communications may take place using a beacon mode. Lower layer LV nodes may communicate using non-beacon modes. Also, initial scanning procedures may encourage first-to-second-level LV device communications rather than MV-to-first-level LV connections.
    Type: Application
    Filed: December 2, 2014
    Publication date: March 26, 2015
    Inventors: Kumaran Vijayasankar, Ramanuja Vedantham, Anand G. Dabak, Badri N. Varadarajan, Il Han Kim, Xiaolin Lu
  • Patent number: 8989135
    Abstract: A spectral arrangement for radio resources is usable for transmitting radio data within a telecommunication network. The spectral arrangement includes (a) a first radio resource usable for transmitting radio data in a first data flow direction, wherein the first data flow direction is either an uplink direction or a downlink direction, (b) a second radio resource usable for transmitting radio data in a second data flow direction, wherein the second data flow direction is opposite to the first data flow direction, (c) a third radio resource usable for transmitting radio data in the second data flow direction and (d) a guard band, which on the frequency scale is located between the first radio resource and the second radio resource such that the first radio resource is separated from the second radio resource Between the second radio resource and the third radio resource there is provided no guard band.
    Type: Grant
    Filed: July 9, 2009
    Date of Patent: March 24, 2015
    Assignee: Nokia Siemens Networks Oy
    Inventors: Peter Skov, Jie Zhen Lin, Chun Hai Yao
  • Patent number: 8989171
    Abstract: A system and method transmit a data stream from a source to a destination over a communication channel. A transmitter includes devices for processing inputs to assemble data packets for the data stream, and a multiplexer for assembling a data frame to be transmitted over the communication channel, in which each data frame has at least one fixed slot. The multiplexer sets at least one freely allocatable time slot in each data frame. Retransmission control devices connected to the multiplexer retransmit a specific data packet which is not properly received by the destination, using one of the freely allocatable slots.
    Type: Grant
    Filed: April 5, 2004
    Date of Patent: March 24, 2015
    Assignee: Microchip Technology, Inc.
    Inventors: Willem Zwart, Dignus-Jan Moelker, Robert Niels Schutten, Robertus Cornelis Wilhelmus Lansbergen, Maarten Coenen, Johannes Cornelis Hendrikus van Leeuwen
  • Patent number: 8982846
    Abstract: Systems, methods and apparatus are provided for scheduling resources in Orthogonal Frequency-Division Multiple Access (OFDMA) communication networks for “direct link” or peer-to-peer communications among stations operating therein so that OFDMA resources can be allocated to a transmitter station for a peer-to-peer communication session with a receiver station such that near-far issues caused by peer-to-peer communication are reduced/avoided. The disclosed technologies can prevent peer-to-peer communication links using different sub-channels within the same time slot from creating near-far issues for other receiver stations that are within communication range.
    Type: Grant
    Filed: August 30, 2012
    Date of Patent: March 17, 2015
    Assignee: Motorola Solutions, Inc.
    Inventors: Michael H. Baker, Jeffrey D. Bonta, George Calcev, Nitin R. Mangalvedhe, James P. Michels, Nathan J. Smith
  • Patent number: 8971283
    Abstract: A radio resource assignment method for a physical channel in an uplink directed from a mobile apparatus to a base station in a radio communication system, includes: assigning a contention-based channel and a scheduled channel according to one of a time division scheme, a frequency division scheme, and a hybrid scheme of the time division scheme and the frequency division scheme. In addition, radio resources are properly assigned to each of the contention-based channel, a common control channel of the scheduled channel, and a shared data channel of the scheduled channel.
    Type: Grant
    Filed: March 27, 2006
    Date of Patent: March 3, 2015
    Assignee: NTT DOCOMO, INC.
    Inventors: Kenichi Higuchi, Hiroyuki Atarashi, Mamoru Sawahashi
  • Patent number: 8971285
    Abstract: A method for transmitting reference signals for a relay node is disclosed. The method includes transmitting a first reference signals for a base station in a first transmission region of a subframe and a second reference signals for a relay node in a second transmission region of the subframe. The first transmission region and the second transmission region in the subframe are regions for transmitting data and the first transmission region and the second transmission regions are different sub-bands of Physical Downlink Shared Channel (PDSCH). Accordingly, it is possible to transmit wideband reference signals by the relay node, to maximally support a Long Term Evolution (LTE) user equipment while operating the relay node, and to perform cooperative multipoint transmission and reception between the base station and the relay node.
    Type: Grant
    Filed: September 23, 2009
    Date of Patent: March 3, 2015
    Assignee: LG Electronics Inc.
    Inventors: Eun Sun Kim, Byeong Geol Cheon, Ki Jun Kim, Hak Seong Kim
  • Patent number: 8964762
    Abstract: In one embodiment, a battery-operated communication device “quick-samples” a frequency hopping sequence at a periodic rate corresponding to a substantially low duty cycle, and is discovered by (e.g., attached to) a main-powered communication device. During a scheduled sample, the main-powered communication device transmits a control packet to be received by the battery-operated communication device, the control packet containing timing information and transmitted to account for worst-case clock drift error between the two devices. The battery-operated communication device responds to the control packet with a link-layer acknowledgment containing timing information from the battery-operated communication device. Accordingly, the two devices may re-synchronize their timing based on the timing information in the control packet and acknowledgment, respectively.
    Type: Grant
    Filed: November 20, 2013
    Date of Patent: February 24, 2015
    Assignee: Cisco Technology, Inc.
    Inventors: Jonathan W. Hui, Lik Chuen Alec Woo, Wei Hong
  • Patent number: 8964786
    Abstract: Systems and methods for designing, using, and/or implementing communications in beacon-enabled networks are described. In various implementations, these systems and methods may be applicable to power line communications (PLC). For example, a method may include identifying one of a plurality of orthogonal superframes. The identified superframe may include beacon slots and contention access period (CAP) slots. The beacon slots may follow a sequence of two or more frequency subbands, and the CAP slots may follow the same sequence of two or more frequency subbands. Also, the sequence of two or more frequency subbands may be distinct from other sequences of two or more frequency subbands followed by other beacon slots and CAP slots within others of the plurality of available superframes. The method may then include communicating with another device using the identified superframe.
    Type: Grant
    Filed: March 30, 2012
    Date of Patent: February 24, 2015
    Assignee: Texas Instruments Incorporated
    Inventors: Kumaran Vijayasankar, Shu Du, Anand Dabak, Badri Varadarajan, Il Han Kim, Xiaolin Lu
  • Patent number: 8958387
    Abstract: An interference power measuring circuit in a base station measures the interference power in a cell that the base station belongs to. When the measured interference power is larger than a predetermined value, the transmitter in the base station transmits the interference information for each frequency used in the FDMA communication system to a base station in a neighboring cell. The base station in the neighboring cell instructs user equipment that communicates the base station to reduce a transmission power.
    Type: Grant
    Filed: December 18, 2007
    Date of Patent: February 17, 2015
    Assignee: Lenovo Innovations Limited (Hong Kong)
    Inventor: Motoya Iwasaki
  • Patent number: 8953431
    Abstract: A method of operation of a transmitting node in an Orthogonal Frequency Division Multiplexing (OFDM) communication system is provided. The method includes generating a frame including a plurality of physical layer zones, each of the plurality of physical layer zones applying different Fast Fourier Transform (FFT) sizes and different pilot patterns; and transmitting the frame.
    Type: Grant
    Filed: November 8, 2011
    Date of Patent: February 10, 2015
    Assignee: Samsung Electronics Co., Ltd
    Inventors: Sung-Ryul Yun, Hong-Sil Jeong, Alain Mourad, Ismael Gutierrez
  • Patent number: 8948143
    Abstract: Disclosed are a scrambling transmission method and device thereof. The method comprises: a user terminal generates the message to be sent and modulates the message to be sent to generate the data modulation symbols; the user terminal scrambles the data modulation symbol using the cell-specific scrambling sequence, to generate the scrambled data modulation symbols; and the user terminal sending the scrambled data modulation symbols via a DFT-S-OFDM transmission structure with a time domain spreading. The present invention can reduce the interference among different user terminal data on the same resource in adjacent cells, thus improve the detection performance of uplink control signals.
    Type: Grant
    Filed: January 6, 2012
    Date of Patent: February 3, 2015
    Assignee: Datang Mobile Communications Equipment Co., Ltd
    Inventors: Xuejuan Gao, Zukang Shen, Yanan Lin
  • Patent number: 8934361
    Abstract: Embodiments of the present invention disclose a downlink Inter-Cell Interference Coordination (ICIC) method and relate to the wireless communication field. The method includes: obtaining information about multiple carriers in a current cell; obtaining, according to the information about the multiple carriers, a downlink ICIC parameter corresponding to each carrier of the multiple carriers; and sending the downlink ICIC parameter corresponding to each carrier to a neighboring cell of the current cell so as to enable the neighboring cell to perform, according to the downlink ICIC parameter, downlink interference coordination with the first cell. The embodiments of the present invention are applicable to downlink ICIC in a multi-carrier system.
    Type: Grant
    Filed: April 17, 2009
    Date of Patent: January 13, 2015
    Assignee: Huawei Technologies Co., Ltd.
    Inventors: Yuan He, Dengkun Xiao, Jian Huang, Chunfeng Yao, Yaojun Wang
  • Patent number: 8929194
    Abstract: A method for generating/transmitting a transmission-unit symbol sequence is disclosed. In the case of transmission information, the information is modulated in time and frequency domains on the basis of a predetermined transmission unit (e.g., a transmission time interval TTI or slot), simultaneous transmission of the information is made, and then a transmission unit symbol is generated/transmitted. A transmission sequence is masked in each symbol contained in one transmission unit. Symbol-unit circular shift (cyclic shift) is applied to the masked result, so that transmission efficiency increases. A control signal transmission method for supporting a variety of formats and a signal transmission method based on a prime-length sequence are also provided.
    Type: Grant
    Filed: June 29, 2012
    Date of Patent: January 6, 2015
    Assignee: LG Electronics Inc.
    Inventors: Seung Hee Han, Min Seok Noh, Yeong Hyeon Kwon, Hyun Woo Lee, Dong Cheol Kim, Jin Sam Kwak
  • Patent number: 8923347
    Abstract: In a data transmission system, a first node receives at least two sets of input data signals including at least two signals being based on different synchronization sources. The first node extracts a respective clock signal representing the embedded clock signals from the sources, samples and formats these signals for transmission according to a TDM structure. The TDM formatted signals are transmitted as at least one bit stream over a transmission medium to at least one second node, where the bit stream is demultiplexed into at least two sets of output data signals respective demultiplexed clock signals representing the sampled clock signals. A jitter attenuating mechanism reduces an amount of frequency jitter to below a predefined level to produce a respective clock signal having a synchronization quality superior to that of the demultiplexed clock signals. An interface module recombines each data signal with its associated clock signal.
    Type: Grant
    Filed: April 27, 2010
    Date of Patent: December 30, 2014
    Assignee: Transmode Systems AB
    Inventor: Gunnar Forsberg
  • Patent number: 8917696
    Abstract: The present invention ensures that the UEs are able to make use of all the available reference signals that can be used in a cell for performing UE measurements, estimations or demodulations. That is achieved by indicating on a downlink common or shared channel, the MIMO mode settings associated with a specific network node. The indicated MIMO mode settings explicitly or implicitly indicate available common reference signals and/or dedicated reference signals to be used for said UE measurements, estimations or demodulations, which implies that measurements, estimations or demodulations can be performed based on said received indication.
    Type: Grant
    Filed: January 28, 2009
    Date of Patent: December 23, 2014
    Assignee: Telefonaktiebolaget L M Ericsson (publ)
    Inventors: Lei Wan, David Astely, Muhammad Kazmi
  • Patent number: 8917614
    Abstract: Methods, apparatuses and articles of manufacture are disclosed that provide for partial downlink and uplink resource allocations among cooperating cells in a CoMP transmission to a user equipment. The resource allocation can be based on channel conditions and differing capabilities and restrictions of cooperating cells such as in support of heterogeneous network configurations.
    Type: Grant
    Filed: February 3, 2011
    Date of Patent: December 23, 2014
    Assignee: QUALCOMM Incorporated
    Inventors: Tao Luo, Wanshi Chen, Juan Montojo
  • Patent number: 8917679
    Abstract: A network signals an allocation (PDCCH) for a downlink shared channel (PDSCH); and also signals an indication (reference signal RS) whether a resource block (PRB) comprising the allocated downlink shared channel is used for a control channel transmission (E-PDCCH). Examples include the E-PDCCH being time or frequency multiplexed with the PDSCH; and the indication being a different RS sequence (at least one element being phase shifted) than an original RS sequence used if the PRB were not used for the E-PDCCH. The UE tests for the phase shift by blind decoding. If the phase shift is present the UE a) decodes a portion of the PRB for data if the network is using TDM for its E-PDCCH/PDSCH multiplexing, orb) decodes the full PRB only for the E-PDCCH if the network is using FDM for its E-PDCCH/PDSCH multiplexing.
    Type: Grant
    Filed: August 16, 2011
    Date of Patent: December 23, 2014
    Assignee: Nokia Corporation
    Inventors: Lars E. Lindh, Klaus Hugl
  • Patent number: 8909166
    Abstract: An apparatus and method for controlling a multi-band antenna in a mobile communication terminal are provided. An apparatus for controlling a multi-band antenna in a mobile communication terminal includes a modem, an antenna unit, a Radio Frequency (RF) processing unit, and a switch module. The modem outputs at least one control signal corresponding to a target frequency band. The antenna unit changes a resonance frequency of the antenna according to the at least one control signal. The RF processing unit includes a plurality of transmission/reception (TX/RX) paths and processes TX/RX signals. The switch module connects the antenna to one of the TX/RX paths according to the at least one control signal.
    Type: Grant
    Filed: June 28, 2011
    Date of Patent: December 9, 2014
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Jung-Ho Park, Sung-Hwan Ko, Suk-Chan Hong, Young-Hwan Jung
  • Patent number: 8908495
    Abstract: Disclosed are a wireless communication apparatus and frequency hopping method which minimize the change in the instantaneous power distribution characteristics of the time waveform of transmission signals when a plurality of channels are multiplexed by frequency division. At a terminal (200), a mapping unit (212) maps the PUCCH to frequency resources of a first slot, maps the PUSCH to frequency resources, among the frequency resources of the first slot, separated exactly by predetermined frequency spacing (B) from the frequency resources to which the PUCCH is mapped, and cyclically shifts the frequencies so as to map the PUCCH and PUSCH to frequency resources, within an IDFT or IFFT bandwidth, of a second slot while maintaining the predetermined frequency spacing (B), thereby allowing frequency hopping of the PUCCH and PUSCH between the first slot and the second slot.
    Type: Grant
    Filed: March 3, 2014
    Date of Patent: December 9, 2014
    Assignee: Panasonic Intellectual Property Corporation of America
    Inventors: Shinsuke Takaoka, Daichi Imamura, Seigo Nakao
  • Patent number: 8902930
    Abstract: Systems and methods for designing, using, and/or implementing hybrid communication networks are described. In various embodiments, these systems and methods may be applicable to power line communications (PLC). For example, one or more of the techniques disclosed herein may include methods to coordinate medium-to-low voltage (MV-LV) and low-to-low voltage (LV-LV) PLC networks when the MV-LV network operates in a frequency subband mode and the LV-LV network operates in wideband mode (i.e., hybrid communications). In some cases, MV routers and LV routers may have different profiles. For instance, MV-LV communications may be performed using MAC superframe structures, and first-level LV to lower-level LV communications may take place using a beacon mode. Lower layer LV nodes may communicate using non-beacon modes. Also, initial scanning procedures may encourage first-to-second-level LV device communications rather than MV-to-first-level LV connections.
    Type: Grant
    Filed: April 27, 2012
    Date of Patent: December 2, 2014
    Assignee: Texas Instruments Incorporated
    Inventors: Kumaran Vijayasankar, Ramanuja Vedantham, Anand G. Dabak, Badri N. Varadarajan, Il Han Kim, Xiaolin Lu
  • Patent number: 8902848
    Abstract: The present invention discloses a method and an apparatus for processing data sending and a method and an apparatus for processing data receiving, wherein, the method for processing data sending includes: allocating the number of spatial transmission layers and a pilot resource for transmission at each spatial transmission layer; generating pilot resource information according to the number of spatial transmission layers and the pilot resource for transmission at each spatial transmission layer; and sending the pilot resource information to user equipment (UE). According to the embodiments of the present invention, the UE is enabled to determine a specific pilot resource to be used so as to effectively distinguish between user channels, obtain a correct channel estimation value, improve channel estimation performance, and thus, obtain correct service data.
    Type: Grant
    Filed: October 27, 2011
    Date of Patent: December 2, 2014
    Assignee: Huawei Technologies Co., Ltd.
    Inventors: Weijun Sun, Yongxing Zhou, Yang Li, Bingyu Qu, Lei Wan, Qiang Wu
  • Patent number: 8897182
    Abstract: The present disclosure relates to an apparatus and a method for transmitting muting information in a wireless communication system, and to an apparatus and a method for acquiring channel state using same. In an exemplary embodiment, muting information includes: a first data field, having a serving cell for receiving from peripheral cells in a multi-cell environment, at least one of a CSI-RS pattern, the number of CSI-RS antenna ports, a CSI-RS duty cycle, and CSI-RS transmission subframe offset information, and using same for expressing the cycle and the offset of muting subframes, which pertain to information on a resource block that can generate interference between the peripheral cells and CSI-RS; and a second data field for expressing a specific muting pattern, which must be muted within the muting subframes, having either 12 bits or 28 bits that display muting application in a bitmap format.
    Type: Grant
    Filed: August 11, 2011
    Date of Patent: November 25, 2014
    Assignee: Pantech Co., Ltd.
    Inventors: Sungjun Yoon, Kyoungmin Park, Sungjin Suh