Fdm Switching Patents (Class 370/430)
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Patent number: 11582675Abstract: A method (100) of route selection in a wireless communication system and a control system (40) is provided. The method includes selecting a route between a first node (1) and a second node (2) and comprises: —evaluating (110) a plurality of possible routes (R1, R2, R3, R4), at least one route (R2, R3, R4) including a third node (3, 4) between the first and the second node; and —selecting (160) the route that has the lowest latency among the possible routes. Especially the method (100) includes: —selecting (120) parameter settings for each link of the possible routes, said selecting (120) comprising; —selecting (130) the length of the cyclic prefix, —evaluating (140) combinations of the selected cyclic prefix and different settings of the at least one further parameter of the physical layer; —selecting (150) the parameter settings that has lowest estimated latency and fulfils at least one communication quality criterion.Type: GrantFiled: May 15, 2019Date of Patent: February 14, 2023Assignee: Hitachi Energy Switzerland AGInventors: Pang Zhibo, Xiaolin Jiang, Dacfey Dzung, Michele Luvisotto, Roger Jansson, Carlo Fischione
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Patent number: 11240082Abstract: Methods and systems for modulating and demodulating data in systems. Bits can be converted into complex-valued symbols. An Inverse Fast Fourier Transform (FFT) can be applied to the complex-valued symbols that represent the bit groups. An FFT time window can be replaced with a time window and a frequency window. A signal comprising the time window and the frequency window can be transmitted. The signal can be converted into a complex-valued symbol. The complex-valued symbols can be converted into bits.Type: GrantFiled: April 10, 2020Date of Patent: February 1, 2022Assignee: ARCTAN, INC.Inventors: Renan Andres Cabrera Lafuente, Oscar Roberto Cabrera Lafuente
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Patent number: 11057006Abstract: An amplification subsystem for a communication system includes a downstream amplifier configured to transmit a downstream signal within a first frequency range, an upstream amplifier configured to transmit an upstream signal within a second frequency range, and a bidirectional amplifier configured to selectively transmit a mid-band signal in either of the upstream and downstream direction.Type: GrantFiled: May 18, 2020Date of Patent: July 6, 2021Assignee: Cable Television Laboratories, Inc.Inventors: Thomas Holtzman Williams, Belal Hamzeh
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Patent number: 10998933Abstract: A method and apparatus for transmitting data from a transmitter device to one or more receiver devices connected to the transmitter device via a respective wire connection, the transmitter device being operable to transmit signals onto the wire connections and a further wire connection at different tones, the method comprising: for each tone, allocating signals transmitted on the further wire connection as supporting signals for a particular wire connection, and measuring electromagnetic coupling between the further wire connection and that particular wire connection; using the measurements, determining a power allocation for transmitting a supporting signal on the further wire connection; for one or more of the tones: transmitting a signal onto the particular wire connection, and transmitting a supporting signal onto the further wire connection at the determined transmission power, thereby to cause crosstalk interference in the particular wire connection.Type: GrantFiled: April 3, 2018Date of Patent: May 4, 2021Assignee: BRITISH TELECOMMUNICATIONS public limited companyInventors: Anas Al Rawi, Leslie Humphrey, Trevor Linney
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Patent number: 10886967Abstract: 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 resoType: GrantFiled: December 13, 2019Date of Patent: January 5, 2021Assignee: NEC CORPORATIONInventors: Robert Arnott, Yassin Aden Awad
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Patent number: 10880631Abstract: A wireless binaural hearing device (1; 101) comprising a first earphone (2; 102), a second earphone (3; 103), a connecting device (4; 104) connecting the first earphone (2; 102) and the second earphone (3; 103) and a rechargeable battery (6). The first earphone (2; 102) comprises a first charging connector (7; 107), which is in electrical connection with the 5 rechargeable battery (6; 106), the second earphone (3; 103) comprises a second electrical connector (8; 108) which is in electrical connection with the rechargeable battery (6; 106). The hearing device (1; 101) can be a part of a system comprising a charging cradle (11; 111).Type: GrantFiled: February 6, 2018Date of Patent: December 29, 2020Assignee: GN Audio A/SInventor: Peter Ulrik Kann
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Patent number: 10728784Abstract: A method and apparatus for measuring a channel quality indicator (CQI) in a wireless communication system is provided. A machine-type communication user equipment (MTC UE) receives at least one of a cell-specific reference signal (CRS) or a channel state information reference signal (CSI-RS) from a network, measures a wideband CQI over plurality of narrowbands based on the received CRS or CSI-RS by averaging narrowband CQIs of the plurality of narrowbands, and transmits the measured wideband CQI to the network.Type: GrantFiled: October 24, 2016Date of Patent: July 28, 2020Assignee: LG ELECTRONICS INC.Inventor: Yunjung Yi
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Patent number: 10708676Abstract: An optical transmission line switching apparatus relays main signal light input via a main transmission line including at least two transmission lines. When no failure occurs in the main transmission line, a control unit controls an optical switch and an optical switch so that the optical switch and the optical switch are connected to different transmission lines. When a failure occurs in one of the at least two transmission lines, the control unit controls the optical switch and the optical switch so that the optical switch and the optical switch are connected to a transmission line that does not have the failure. When recovery from the failure is completed, the control unit controls the optical switch and the optical switch so that the optical switch and the optical switch are connected to different transmission lines.Type: GrantFiled: April 10, 2017Date of Patent: July 7, 2020Assignee: Mitsubishi Electric CorporationInventors: Shun Chikamori, Katsunori Imanishi, Toshiyuki Tokura, Kengo Takata
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Patent number: 10700907Abstract: Certain aspects of the present disclosure relate to communication systems, and more particularly, to single-carrier waveform generation for transmission. An exemplary method generally includes concatenating a first sequence of data samples with samples of a known sequence to generate a first series of samples, performing a discrete Fourier transform (DFT) on the first series of samples to generate a first series of frequency-domain samples, mapping the first series of frequency-domain samples and first zero values to first tones of a system bandwidth, performing an inverse discrete Fourier transform (IDFT) on the mapped first series of frequency-domain samples and the mapped first zero values to generate first time-domain samples of a first orthogonal frequency domain multiplexing (OFDM) symbol, and transmitting the first OFDM symbol as a single-carrier waveform in a first period.Type: GrantFiled: June 19, 2018Date of Patent: June 30, 2020Assignee: QUALCOMM IncorporatedInventors: Jing Sun, Xiao Feng Wang, Tao Luo, Tamer Kadous
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Patent number: 10298323Abstract: The disclosure is directed to a method and system for generating a pilot tone for an optical signal with an optical telecommunications system. The pilot tone is generated in the digital domain by modulating the data to be transmitted to a destination node within the optical telecommunications network. The modulation of the data introduces occurrence modulation to the optical signal.Type: GrantFiled: February 13, 2018Date of Patent: May 21, 2019Assignee: HUAWEI TECHNOLOGIES CO., LTD.Inventors: Zhiping Jiang, Zhuhong Zhang, Chuandong Li
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Patent number: 10263699Abstract: The disclosure is directed to a method and system for generating a pilot tone for an optical signal with an optical telecommunications system. The pilot tone is generated in the digital domain by modulating the data to be transmitted to a destination node within the optical telecommunications network. The modulation of the data introduces occurrence modulation to the optical signal.Type: GrantFiled: February 13, 2018Date of Patent: April 16, 2019Assignee: HUAWEI TECHNOLOGIES CO., LTD.Inventors: Zhiping Jiang, Zhuhong Zhang, Chuandong Li
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Patent number: 9929805Abstract: The disclosure is directed to a method and system for generating a pilot tone for an optical signal with an optical telecommunications system. The pilot tone is generated in the digital domain by modulating the data to be transmitted to a destination node within the optical telecommunications network. The modulation of the data introduces occurrence modulation to the optical signal.Type: GrantFiled: May 11, 2016Date of Patent: March 27, 2018Assignee: HUAWEI TECHNOLOGIES CO., LTD.Inventors: Zhiping Jiang, Zhuhong Zhang, Chuandong Li
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Patent number: 9832790Abstract: Methods, apparatus, systems and articles of manufacture to transmit data in a connectionless mode are disclosed. An example method includes identifying, at a node in a wireless network, that a user equipment has indicated that the user equipment will communicate data without establishing a bearer with the wireless network. A random access channel (RACH) message transmitted to the node from the user equipment is accessed by the node. A preamble from the RACH message is extracted as the data. The data is inspected to identify a destination address of the data. The data is relayed to the destination address.Type: GrantFiled: September 23, 2015Date of Patent: November 28, 2017Assignee: AT&T Intellectual Property I, L.P.Inventor: Roger Piqueras Jover
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Patent number: 9596113Abstract: A transmitting device for transmitting data symbols and pilot symbols in an OFDM transmission system; the device comprising symbol generating means for generating said data symbols and said pilot symbols, means for transmitting said data symbols and pilot symbols respectively by using a plurality of subcarriers of said OFDM transmission system, wherein said symbol generating means is designed to selectively generate a first type pilot symbol and a second type pilot symbol being orthogonal to said first type pilot symbol so that a pilot symbol pattern in the frequency dimension comprises at least said first type pilot symbol to be transmitted by using a predefined subcarrier and second type pilot symbol to be transmitted by using other predefined subcarrier, and wherein said pilot symbol pattern has a different pattern from a succeeding pilot symbol pattern in time dimension.Type: GrantFiled: June 2, 2016Date of Patent: March 14, 2017Assignee: SONY DEUTSCHLAND GmbHInventors: Zhaocheng Wang, Richard Stirling-Gallacher
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Patent number: 9438297Abstract: A protective case for an electronic device includes a PCB and other components and devices. The other components and devices arranged on the case are connected to the PCB, the devices include a battery, a socket configured to accommodate a wireless communication device, a data connector, a wireless communication module, and a control module. The control module controls the battery to charge the electronic device and activates the wireless communication module to connect to the electronic device through the data connector, if the data connector is in use. The wireless communication module is controlled to communicate with the wireless communication device if the wireless communication device is removed from the socket and the battery is controlled to supply power to the wireless communication device if the wireless communication device is inserted into the socket.Type: GrantFiled: July 13, 2015Date of Patent: September 6, 2016Assignee: HON HAI PRECISION INDUSTRY CO., LTD.Inventors: Chen-Ching Chu, Cheng-Kuo Lee, Yu-Ning Wang
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Patent number: 9438744Abstract: An xDSL data transmission system which comprises at least two xDSL data transmission devices that connect at least two Ethernet networks to the xDSL data transmission system. For transmitting payload data via an xDSL transmission link formed between two adjacent xDSL data transmission devices, a respective xDSL data transmission frame according to a first protocol stack is used, in which additionally an embedded operations channel is provided according to the first protocol stack. A second protocol stack different from the first protocol stack is provided according to which an access to the embedded operations channel within an xDSL data transmission device is executed, and management data for diagnostics and configuration of the xDSL data transmission system are added to, transferred within, and read from the embedded operations channel, independently of the payload data of the xDSL data transmission frame.Type: GrantFiled: October 15, 2013Date of Patent: September 6, 2016Assignee: Phoenix Contact GmbH & Co. KGInventor: Matthias Klocke
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Patent number: 9369301Abstract: In one embodiment, a system includes a server having a hypervisor layer that includes an overlay-capable virtual switch and a Fiber Channel (FC) virtual switch; at least one processor configured to execute logic; and a converge network adapter (CNA) coupled to the hypervisor, the CNA being configured to communicate with the overlay-capable virtual switch and the FC virtual switch, wherein the CNA is configured to communicate with a FC forwarder (FCF), and the overlay-capable virtual switch includes logic configured to communicate with a central controller. In another embodiment, a method for sending FCoE traffic over an overlay network includes receiving a block of media access control (MAC) addresses for use in local fabric initialization protocol (FIP) operations and advertising to all local FCoE initiators to route FCoE traffic to a server by asserting an overlay-capable virtual switch within the server as a FCF for any requesting FCoE initiators.Type: GrantFiled: August 8, 2014Date of Patent: June 14, 2016Assignee: International Business Machines CorporationInventors: Bhalachandra G. Banavalikar, Keshav G. Kamble, Renato J. Recio
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Patent number: 9178765Abstract: A cable modem termination system (CMTS) may communicate with a plurality of cable modems using a plurality of orthogonal frequency division multiplexed (OFDM) subcarriers. The CMTS may determine a performance metric of each of the cable modems. For each of the OFDM subcarriers and each of the cable modems, the CMTS may select physical layer parameters to be used for communication with that cable modem on that OFDM subcarrier based on a performance metric of that cable modem. The parameters may be selected for each individual modem and/or each individual subcarrier, or may be selected for groups of modems and/or groups of subcarriers. The parameters may include, for example, one or more of: transmit power, receive sensitivity, timeslot duration, modulation type, modulation order, forward error correction (FEC) type, and FEC code rate.Type: GrantFiled: July 23, 2013Date of Patent: November 3, 2015Assignee: MAXLINER, INC.Inventors: Curtis Ling, Sridhar Ramesh, Timothy Gallagher
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Patent number: 9088642Abstract: A communication system comprises a plurality of line cards having transceivers coupled to a plurality of subscriber lines. Each line card has at least one active transceiver within the same vectoring group, and each line card also has vector logic capable of cancelling crosstalk induced by an active transceiver that is a member of the vectoring group. In the event of a vectoring fault that prevents a line card from receiving vectoring information from at least on other line card, the vector logic is configured to disable vectoring for the interferers affected by the error in order to prevent vectoring operations based on obsolete vectoring coefficients from adversely affecting the quality of the communicated signals. The transceivers communicating signals affected by the suspended vectoring operations are also configured to adjust their constellation density profiles, thereby reducing their data rates, to accommodate the increased noise level resulting from the loss of vectoring.Type: GrantFiled: March 2, 2012Date of Patent: July 21, 2015Assignee: ADTRAN, Inc.Inventors: Richard Goodson, Arlynn Wayne Wilson, Fred Chu
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Patent number: 9036650Abstract: Automatic low noise frequency selection for a touch sensitive device is disclosed. A low noise stimulation frequency can be automatically selected by device logic without intervention of the device processor to stimulate the device to sense a touch event at the device. The device logic can automatically select a set of low noise frequencies from among various frequencies based on the amount of noise introduced by the device at the various frequencies, where the frequencies with the lower noise amounts can be selected. The device logic can also automatically select a low noise frequency from among the selected set as the low noise stimulation frequency. The device logic can be implemented partially or entirely in hardware.Type: GrantFiled: September 11, 2009Date of Patent: May 19, 2015Assignee: Apple Inc.Inventors: Thomas James Wilson, Christoph Horst Krah
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Patent number: 9030970Abstract: A method and apparatus for transmitting uplink control information in a wireless communication system is disclosed. A method for transmitting uplink control information in a mobile station of a wireless communication system includes performing reverse repetition coding with respect to first uplink control information, and performing joint coding with respect to the reverse repetition coded first uplink control information and second uplink control information. The first uplink control information has higher priority than the second uplink control information.Type: GrantFiled: January 27, 2011Date of Patent: May 12, 2015Assignee: LG Electronics Inc.Inventors: Hyun Woo Lee, Sung Ho Moon, Jae Hoon Chung, Seung Hee Han
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Patent number: 8971208Abstract: The invention relates to a multichannel radio-frequency receiver for electromagnetic waves, having a radio-frequency analogue section, which has an input for an electrical signal from a reception device, and having a lower-frequency section, which is connected downstream of the radiofrequency analogue section and has a plurality of parallel channels (6b, 6c; 7b, 7c) for in each case different signal levels and an evaluation circuit, in which, in the radiofrequency analogue section in order to split the signal in accordance with a predeterminable division ratio into signal elements which can be supplied to radio-frequency analogue channels (6a, 7a), downstream from which the channels (6b, 6c; 7b, 7c) of the lower-frequency section are respectively connected, and the channels (6b, 6c; 7b, 7c) of the lower-frequency section each have an evaluation circuit for detection of the phase and amplitude of the respective signal element.Type: GrantFiled: May 8, 2014Date of Patent: March 3, 2015Assignee: Selex ES GmbHInventors: Frank Gekat, Dieter Ruhl
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Patent number: 8965205Abstract: Methods and apparatus to deploy fiber optic based access networks are disclosed. An example access network comprises a first fiber optic cable segment to couple an optical access head-end to a first pedestal and to transport user data, a second fiber optic cable segment to couple the first pedestal to a second pedestal and to transport a first portion of the user data to the second pedestal, a drop cable segment to couple the first pedestal to a customer premises and to transport a second portion of the user data to the customer premises, and a switch at the first pedestal to route the first portion of the user data between the first and second fiber optic cable segments and to route the second portion of the user data between the first fiber optic cable segment and the drop cable segment.Type: GrantFiled: September 19, 2013Date of Patent: February 24, 2015Assignee: AT&T Intellectual Property I, L.P.Inventors: Zhi Cui, Thomas Anschutz
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Patent number: 8953431Abstract: 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: GrantFiled: November 8, 2011Date of Patent: February 10, 2015Assignee: Samsung Electronics Co., LtdInventors: Sung-Ryul Yun, Hong-Sil Jeong, Alain Mourad, Ismael Gutierrez
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Patent number: 8953632Abstract: A transmitting device for transmitting data symbols and pilot symbols in an OFDM transmission system; the device comprising symbol generating means for generating said data symbols and said pilot symbols, means for transmitting said data symbols and pilot symbols respectively by using a plurality of subcarriers of said OFDM transmission system, wherein said symbol generating means is designed to selectively generate a first type pilot symbol and a second type pilot symbol being orthogonal to said first type pilot symbol so that a pilot symbol pattern in the frequency dimension comprises at least said first type pilot symbol to be transmitted by using a predefined subcarrier and second type pilot symbol to be transmitted by using other predefined subcarrier, and wherein said pilot symbol pattern has a different pattern from a succeeding pilot symbol pattern in time dimension.Type: GrantFiled: March 25, 2013Date of Patent: February 10, 2015Assignee: Sony Deutschland GmbHInventors: Zhaocheng Wang, Richard Stirling-Gallacher
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Patent number: 8942134Abstract: A system and method for selective registration of a user equipment (UE) to one of a plurality of access points (APs). An indication may be received that each of a plurality of APs have received a signal from a UE. The UE may be registered to the first one of the plurality of APs to satisfy registration requirements associated with the UE. Information may be reported to a controller related to the signal strength of communication received at each AP from the UE. If the signal strength received at the registered AP is less than the signal strength received at one or more of the non-registered APs by more than a threshold amount, the registration of the UE to the registered AP may be rejected.Type: GrantFiled: November 20, 2013Date of Patent: January 27, 2015Assignee: Magnolia Broadband Inc.Inventors: Kenneth Kludt, Haim Harel
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Patent number: 8942118Abstract: A mobile communication terminal 10 receives “HCS_PRIO” of a notice data (System Information Block Type 3) of a base station 1 or 3, and determines whether the terminal 10 is present “indoor” and is in “a stationary state or a state moving at a low speed” based on the receiving result. Since there is a high possibility that the terminal 10 is connectable with a wireless LAN when the terminal 10 is present “indoor” and is in “a stationary state or a state moving at a low speed”, the terminal 10 sets a period for monitoring arrival of a beacon signal.Type: GrantFiled: November 9, 2011Date of Patent: January 27, 2015Assignee: Lenovo Innovations Limited (Hong Kong)Inventor: Yoshiaki Omori
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Patent number: 8923316Abstract: An apparatus and method for routing IP traffic in real time from at least one network user to a plurality of internet links. Embodiments include assigning different ranks to different internet links based on network monitoring. In one embodiment, a system for routing traffic includes an route optimizer to generate routing instructions using financial costs of routing data packets on the internet links, traffic condition information associated with the internet links, types of data of the incoming data packets, and levels of service assigned to the types of data of incoming data packets. In another embodiment, a method to generate a routing instruction uses delay data for each of the internet links, the type of data of the incoming data packet, and a level of service assigned to the type of data of the incoming data packet.Type: GrantFiled: September 20, 2011Date of Patent: December 30, 2014Assignee: Cisco Technology, Inc.Inventor: Paranthaman Narendran
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Patent number: 8891401Abstract: Systems, methods, and apparatus are provided for automated identification of open space in a wireless communications spectrum, by identifying sources of signal emission in the spectrum by automatically detecting signals, analyzing signals, comparing signal data to historical and reference data, creating corresponding signal profiles, and determining information about the open space based upon the measured and analyzed data in near real-time.Type: GrantFiled: July 11, 2014Date of Patent: November 18, 2014Assignee: DGS Global Systems, Inc.Inventor: Daniel Carbajal
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Patent number: 8873422Abstract: Systems, methods, and apparatus are provided for automated identification of open space in a wireless communications spectrum, by identifying sources of signal emission in the spectrum by automatically detecting signals, analyzing signals, comparing signal data to historical and reference data, creating corresponding signal profiles, and determining information about the open space based upon the measured and analyzed data in near real-time.Type: GrantFiled: May 8, 2014Date of Patent: October 28, 2014Assignee: DGS Global Systems, Inc.Inventor: Daniel Carbajal
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Patent number: 8854945Abstract: In wireless communications, adaptive gain control may be performed by scaling of signals before and after a transform. A received signal power may be non-causally scaled to a first level within a desired range before transforming the received signal. The scaled signal is transformed between a time domain to a frequency domain and then its power is again non-causally scaled based on the first level. A feed forward circuit may be used in the power scaling. Different portions of the signal may be power adjusted independently of other portions. The different portions may be separated on a per-channel basis. Power scaling may be done on a symbol-by-symbol basis.Type: GrantFiled: November 9, 2011Date of Patent: October 7, 2014Assignee: Qualcomm IncorporatedInventors: Peter Gaal, Zhifei Fan, Yongbin Wei, Hao Xu
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Patent number: 8855131Abstract: Provided is a transmission device, wherein even when the transmission device performs noncontiguous band allocation transmission, the same level of coverage and gain as when the contiguous band allocation transmission is assumed can be maintained. A transmission power control unit (110), in a second mode, calculates first power on the basis of the transmission power control method using, as the bandwidth of the contiguous bands in the first mode, the bandwidth of a first band with the lowest frequency in a cluster allocated to the lowest band among a plurality of clusters and the highest frequency in a cluster allocated to the highest band among the plurality of clusters as both ends thereof, and calculates the transmission power using the ratio between the bandwidth of the first band and the bandwidth of a second band to which the plurality of the clusters are allocated, and the first power.Type: GrantFiled: April 1, 2011Date of Patent: October 7, 2014Assignee: Panasonic Intellectual Property Corporation of AmericaInventors: Daichi Imamura, Akihiko Nishio, Seigo Nakao, Takashi Iwai
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Patent number: 8855026Abstract: A network sends to a user equipment UE a reference signal configuration, and from receiving it the UE selects a codeword identifying a cooperative multipoint CoMP transmission scheme. There is a CoMP scheme selection codebook from which the UE selects the codeword corresponding to its recommended CoMP scheme. The UE sends to the network that codeword which identifies the CoMP transmission scheme, along with the CSI feedback characterizing the CoMP transmission scheme. From that codeword which the network receives it determines the UE's assumed CoMP transmission scheme, which the network uses to determine how the CSI feedback, received from the UE, was calculated by the UE (for example, joint transmission, or dynamic point selection with or without muting, or coordinating scheduling/beamforming). The network uses this information for selecting a CoMP transmission scheme for downlink CoMP transmissions to the UE.Type: GrantFiled: November 8, 2011Date of Patent: October 7, 2014Assignee: Broadcom CorporationInventors: Helka-Liina Maattanen, Mihai Enescu, Tommi Koivisto
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Patent number: 8842612Abstract: Methods and apparatus for service acquisition in a multi-frequency network. In an aspect, a method is provided for service acquisition in a multi-frequency network. The method includes detecting a service acquisition trigger event and identifying a selected RF channel from an acquisition RF list based on signal strength, wherein the acquisition RF list identifies RF channels in one or more local operations infrastructures (LOIs) of the multi-frequency network. The method also includes acquiring a wide system on the selected RF channel, removing the selected RF channel from the acquisition RF list if the wide system can not be acquired on the selected RF channel, and repeating said operations of identifying, acquiring and removing until the wide system is acquired on the selected RF channel or a system acquisition timeout occurs.Type: GrantFiled: June 18, 2008Date of Patent: September 23, 2014Assignee: QUALCOMM IncorporatedInventors: Binita Gupta, Linbo Li, Raghuraman Krishnamoorthi, Ashok Mantravadi
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Patent number: 8817673Abstract: A method for allocating an Acknowledgement/Negative Acknowledgement (ACK/NACK) channel by a Base Station (BS) in a Frequency Division Duplexing (FDD) system is provided. The method includes allocating downlink resources in one or more cells to a User Equipment (UE), transmitting, Physical Downlink Control Channel (PDCCH) information and downlink data using the downlink resources, allocating at least four ACK/NACK channels to the UE, receiving ACK/NACK information for the PDCCH information and the downlink data fed back by using two antennas from the UE, and performing re-transmission or transmitting new data according to the ACK/NACK information, wherein at least two of the at least four ACK/NACK channels are the same as at least two ACK/NACK channels allocated by the BS in a mode not using a Spatial Orthogonal Resource Transmit Diversity (SORTD) scheme, and the at least two of the at least four ACK/NACK channels are allocated to different antennas.Type: GrantFiled: November 8, 2011Date of Patent: August 26, 2014Assignee: Samsung Electronics Co., Ltd.Inventors: Yingyang Li, Chengjun Sun, Xiaoqiang Li
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Patent number: 8804775Abstract: Method and device for a wired communication link that includes a first transceiver that sends over a set of wires a downstream multiplexed transmission that includes a first direction of a bidirectional data channel and lossless high definition digital video. The first transceiver is able to receive, over at least a subset of the set of wires utilized for the downstream multiplexed transmission, an upstream transmission comprising a second direction of the bidirectional data channel.Type: GrantFiled: July 7, 2013Date of Patent: August 12, 2014Assignee: Valens Semiconductor Ltd.Inventors: Eyran Lida, Nadav Banet, Gaby Gur Cohen
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Patent number: 8804637Abstract: A method for transmitting a midamble in a radio communication system is provided. The method includes: allocating a radio resource of a carrier for the midamble, and transmitting the midamble by using the allocated radio resource, wherein the carrier includes a used band allocated for transmitting a signal and a guard band allocated for preventing interference from occurring in the used band, and the midamble is allocated to a radio resource including the guard band. Accordingly, a midamble which can be used in both a user equipment operating at a narrow band and a user equipment operating at a wide band can be transmitted when a radio communication system is in a multi-carrier mode. Further, the midamble can be transmitted also in a guard band, thereby improving accuracy of channel estimation.Type: GrantFiled: January 27, 2010Date of Patent: August 12, 2014Assignee: LG Electronics Inc.Inventors: Jin Young Chun, Woo Suk Kwon, Wook Bong Lee, Bin Chul Ihm
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Patent number: 8787187Abstract: A communication device transmits a plurality of measurement packets for identifying an available bandwidth to another communication device connected via a network, using bandwidths in the measurement bandwidth range. The communication device then determines whether the available bandwidth is included in the measurement bandwidth range. In a case where the available bandwidth is not included in the measurement bandwidth range, the communication device determines whether the available bandwidth is located on a narrowband side or on a wideband side with respect to the measurement bandwidth range, and determines a bandwidth shift amount based on an amount of change. The communication device updates the measurement bandwidth range by shifting one of the lower bandwidth and the upper bandwidth based on the bandwidth shift amount.Type: GrantFiled: August 31, 2011Date of Patent: July 22, 2014Assignee: Brother Kogyo Kabushiki KaishaInventors: Mitsuru Nakamura, Kenji Oike
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Patent number: 8761191Abstract: An OFDM system embeds sequence information in the transmitted signal that reduces peak average power ratio (PAP) with minimal impact on the overall system efficiency. A marker is embedded onto the transmitted information that is used to identify the combining (inversion) sequence at the receiver. In one embodiment, selected tones in a cluster are rotated when the corresponding phase factor rotates the cluster.Type: GrantFiled: December 5, 2012Date of Patent: June 24, 2014Assignee: AT&T Intellectual Property II, L.P.Inventors: Leonard Joseph Cimini, Jr., Nelson Ray Sollenberger
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Patent number: 8755399Abstract: A common-direction duplexer may include a common port, a first-band port, and a second-band port. The common-direction duplexer may also include a first filter between the common port and the first-band port. The first filter may be configured to pass a first frequency range and filter out a second frequency range and a third frequency range. The first and second frequency ranges may be associated with a first-direction signal transmitted in the first and/or second frequency range. The third frequency range may be spectrally between the first and second frequency ranges and may be associated with a second-direction signal that propagates in a direction opposite that of the first-direction signal. The common-direction duplexer may also include a second filter between the common port and the second-band port. The second filter may be configured to pass the second frequency range and filter out the first and third frequency ranges.Type: GrantFiled: March 15, 2013Date of Patent: June 17, 2014Assignee: Wilson Electronics, LLCInventors: Vernon A. Van Buren, Christopher K. Ashworth, James W. Wilson
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Patent number: 8750156Abstract: Systems, methods, and apparatus are provided for automated identification of open space in a wireless communications spectrum, by identifying sources of signal emission in the spectrum by automatically detecting signals, analyzing signals, comparing signal data to historical and reference data, creating corresponding signal profiles, and determining information about the open space based upon the measured and analyzed data in near real time.Type: GrantFiled: November 21, 2013Date of Patent: June 10, 2014Assignee: DGS Global Systems, Inc.Inventor: Daniel Carbajal
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Patent number: 8750798Abstract: A multiple input multiple output (MIMO) antenna module, comprising a first signal feed port coupled to a first antenna element disposed along a first edge of an antenna array board, a second signal feed port coupled to a second antenna element disposed on the antenna array board and a transceiver operable to be selectively coupled to either or both of the first and second signal feed ports.Type: GrantFiled: July 12, 2010Date of Patent: June 10, 2014Assignee: BlackBerry LimitedInventors: Qinjiang Rao, James Paul Warden, Mina Ayatollahi
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Patent number: 8743745Abstract: A single channel full duplex wireless communication system includes a processor, a transmitter, a receiver, a secondary transmission path, a combining element, a primary transmission feedback path and a secondary transmission feedback path. The transmitter transmits a transmission signal via a transmission path. The receiver receives a received signal via a reception path. The transmitter and the receiver utilize one channel to transmit and receive signals. The transmission signal causes self-interference. The processor estimates a first transfer function and feeds the secondary transmission path with the transmission signal adjusted by the first transfer function to reduce the transmission signal leaked to the reception path. The combining element combines the transmission signal with the adjusted secondary transmission path signal to remove the self-interference. The primary transmission feedback path output is modified by a second transfer function.Type: GrantFiled: September 25, 2013Date of Patent: June 3, 2014Assignee: Redline Communications Inc.Inventor: Octavian Sarca
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Patent number: 8730833Abstract: Technologies are presented for enabling a relatively low power, limited range communications system (or, alternatively, a terminal in a directional, point-to-point communications link), using native data communications services provided by an overlying wireless network, to automatically (or semi-automatically) negotiate with that network for use of specific portions of the frequency band or bands that are used in common by the low power device and the overlying network. Frequency management capabilities inherent to the wireless network may be utilized to automatically execute the resulting frequency use coordination. Through the coordination, the low power (or point-to-point) communications system may be protected from potentially excessive interference from the overlying network and/or user devices operating on that network (and vice-versa) while minimizing any impact on performance and capacity of the overlying network.Type: GrantFiled: May 9, 2012Date of Patent: May 20, 2014Assignee: Empire Technology Development LLCInventor: Elliot H. Drucker
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Patent number: 8724639Abstract: The present invention provides a method and device for an integrated smart hub. The method and device for an integrated smart hub provides for a simultaneously multicasting of a plurality of functions with a simple and an easy process to operate the device. The integrated device utility includes applications in the areas of telephony, data processing, content storage, multimedia, augmentative communications, personal computing, home or facility security and automation. The integrated smart hub system incorporates integrated components and functions including a Set Top Box (STB), telephone modem, wireless modems, Optical Network Terminal (ONT), Very-high-speed Digital Subscriber Line (VDSL), data server, video server, solid-state storage, game server, an Internet Protocol (IP) intelligent gateway router, and a plurality of microprocessors.Type: GrantFiled: February 26, 2010Date of Patent: May 13, 2014Inventor: Mohamed K. Mahmoud
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Patent number: 8705555Abstract: A route control system includes a status measuring unit, a cost management unit, a route determining unit, and a route setting unit. The status measuring unit checks a status of each node included in a network. The status is a wake state or a sleep state. The cost management unit updates a link cost for a link connected to a node in the wake state to a value smaller than any link cost for a link connected to a node in the sleep state. The route determining unit determines an optimum route connecting a first terminal to a second terminal. A sum of the link costs for the optimum route is lowest among the link costs for other available routes connecting the first terminal to the second terminal. The route setting unit sets a requested data flow in the optimum route.Type: GrantFiled: September 27, 2010Date of Patent: April 22, 2014Assignee: Fujitsu LimitedInventors: Satoshi Imai, Akiko Yamada, Takanori Matsunaga
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Patent number: 8699625Abstract: A coded multidimensional modulation system called generalized OFDM (GOFDM) uses orthogonal subcarriers as bases functions, and the signal constellation points of corresponding multidimensional constellation diagram are obtained as N-dimensional Cartesian product of one-dimensional PAM/two-dimensional QAM. In GOFDM, the N-dimensional/2N-dimensional signal constellation point is transmitted over all N subcarriers/2N-subcarriers, which serve as individual bases functions. Even if some of the subcarriers are severely affected by channel distortion, the overall signal constellation point will face only small distortion, when strong channel capacity achieving channel codes are used. In addition, because the channel capacity is a linear function of number of dimensions, the spectral efficiency of optical transmission systems is significantly improved.Type: GrantFiled: October 10, 2011Date of Patent: April 15, 2014Assignee: NEC Laboratories America, Inc.Inventors: Ivan B. Djordjevic, Lei Xu, Ting Wang
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Patent number: 8649351Abstract: A method for scheduling a first and a second channel in a subframe includes dividing transmission resources needed for the first channel into a first set of resource groups and assigning the resource groups of the first set to subelements in the subframe in a predetermined fashion. The method also includes assigning a symbol value to all subelements in the subframe which have not been assigned a resource group of the first set and dividing transmission resources needed for the second channel into a second set of resource groups. Additionally, the method includes assigning, in a predetermined fashion, the resource groups of the second set to subelements in the subframe by means of said symbol values.Type: GrantFiled: November 21, 2008Date of Patent: February 11, 2014Assignee: Telefonaktiebolaget LM Ericsson (publ)Inventors: Stefan Parkvall, David Astely
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Patent number: 8619640Abstract: When a wireless communications device intends to communicate with another device over a wide channel consisting of multiple narrow channels, but detects interference on one or more of those narrow channels, it may restrict subsequent communications with that other device to those narrow channels that don't suffer from the interference. In one embodiment the device may simply refuse to monitor the interfering channel(s) for signals for a particular period of time. In another embodiment the device may use a CTS to signal the other device not to use the interfering narrow channel(s). That may result in using a wide channel with a reduced bandwidth for communications.Type: GrantFiled: December 16, 2010Date of Patent: December 31, 2013Assignee: Intel CorporationInventor: Minyoung Park
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Patent number: 8619745Abstract: In order to prevent from being incapable of receiving Multimedia Broadcast Multicast Service, called MBMS hereinafter, service when a user equipment (UE) has a connection for signaling only, the present invention provides a method of selecting an MBMS operating frequency for the UE in a wireless communications system. The method includes determining a radio bearer state of the UE, and switching a current operating frequency of the UE to a preferred frequency corresponding to an MBMS service prioritized by upper layers when the radio bearer state of the UE is in signaling transmission state.Type: GrantFiled: October 3, 2011Date of Patent: December 31, 2013Assignee: Innovative Sonic LimitedInventor: Richard Lee-Chee Kuo