Signal Quality Determined By Bit Error Rate Patents (Class 370/333)
  • Patent number: 10348598
    Abstract: Provided is a terminal device including an acquisition unit configured to acquire a result of determination of whether another terminal device that has a function for short range wireless communication is positioned near the terminal device and a control unit configured to, on the basis of the result of the determination, control a time interval of polling related to the short range wireless communication.
    Type: Grant
    Filed: June 30, 2014
    Date of Patent: July 9, 2019
    Assignee: SONY CORPORATION
    Inventors: Daisuke Kawakami, Sho Amano
  • Patent number: 10306574
    Abstract: A synchronising assisting device (14) sends an adjustment value (AV) to a mobile station (12) for use when synchronising to a resource employed by the target cell (17), where the adjustment value (AV) is an estimate of the change in timing required to synchronise to a reference signal interval of the resource, and processes the adjustment value (AV) if an indication (IATC) of the actual change in timing required for synchronizing to the reference signal interval is received from the mobile station. The mobile station receives the adjustment value (AV), synchronises to the resource starting at a starting point set by the adjustment value (AV), detects a pilot signal in the reference signal interval, determines an actual change in timing required for synchronising to the reference signal interval, investigates the difference and sends an indication (IATC) of the required actual change in timing to the synchronising assisting device (14).
    Type: Grant
    Filed: November 3, 2014
    Date of Patent: May 28, 2019
    Assignee: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
    Inventors: Claes Tidestav, Andreas Cedergren, Andres Reial
  • Patent number: 10299139
    Abstract: A non-transitory computer readable storage medium has instructions executed by a processor to access a list of Wi-Fi networks available to a user device. User network activity is classified. It is determined that there is a new Wi-Fi network for the user device to initiate a connection attempt. In the event of an existing licensed spectrum wireless network data connection on the user device, licensed spectrum wireless network data connection analytics are collected and an attempt is made to transition to the new Wi-Fi network to produce either a failed transition to the new Wi-Fi network or a successful transition to the new Wi-Fi network. In the event of an existing Wi-Fi network collection on the user device or a successful transition to the new Wi-Fi network, available Wi-Fi networks are periodically assessed to establish one of a network unavailable state and a network available state.
    Type: Grant
    Filed: January 29, 2018
    Date of Patent: May 21, 2019
    Assignee: Ipass Inc.
    Inventors: Raghu Konka, Navtej Singh Mann, Purushottam Shukla, Blaz Vavpetic
  • Patent number: 10219259
    Abstract: Aspects of the present disclosure provide apparatus and techniques that may be applied in systems for improving reliability of cell selection to ensure that a UE is capable of transmitting on the uplink in addition to receiving on the downlink upon mobility An exemplary method, performed by a user equipment (UE), generally includes receiving reference signals from one or more transmission reception points (TRPs) in a wireless communications network, pre-selecting, based on the received reference signals, a first TRP, of the one or more TRPs, from which to receive wireless service, transmitting an uplink (UL) signal to the first TRP, receiving, from the first TRP, feedback comprising information about the UL signal, and determining, based at least in part on the feedback, to select the first TRP from which to receive the wireless service.
    Type: Grant
    Filed: May 9, 2017
    Date of Patent: February 26, 2019
    Assignee: QUALCOMM Incorporated
    Inventors: Keiichi Kubota, Gavin Bernard Horn, Joseph Binamira Soriaga, Tingfang Ji, Tao Luo, Hung Ly
  • Patent number: 10084505
    Abstract: A method operates a signal coupling device. The signal coupling device contains at least one signal branch section which is or can be connected to a terminal-side interface of the signal coupling device using signaling. At least one signal property of a signal applied to the at least one signal branch section is determined. A signal type is determined on the basis of the at least one signal property. A time duplexing signal or a frequency duplexing signal is determined as the signal type. A signal-type-specific connection is established between the terminal-side interface and an antenna-side interface of the signal coupling device.
    Type: Grant
    Filed: July 16, 2015
    Date of Patent: September 25, 2018
    Assignee: Laird Dabendorf GmbH
    Inventors: Helmut Nast, Raimo Jacobi, Marcus Weigelt
  • Patent number: 10075933
    Abstract: A method for configuring a ZeroCorrelationZoneConfig (Ncs) parameter of a base station is provided. The method comprises determining a count of timing synchronization failures between a mobile device and the base station. The method comprises upon determining that the count of timing synchronization failures satisfies a threshold, dynamically configuring an Ncs parameter. The method further comprises detecting an occurrence of a timing synchronization failure. The detecting the occurrence of the timing synchronization failure comprises receiving a first message comprising a preamble, generating a preamble identification (ID) for the received preamble, transmitting a second message comprising the preamble ID, and upon transmission of the second message, detecting a non-receipt of a third message.
    Type: Grant
    Filed: May 5, 2015
    Date of Patent: September 11, 2018
    Assignee: QUALCOMM Incorporated
    Inventors: Mutaz Zuhier Afif Shukair, Sandip Sarkar, Salil Sawhney, Kausik Ray Chaudhuri
  • Patent number: 10044565
    Abstract: Exemplary systems, methods, and apparatuses may direct an application processor of an embedded computing device to: detect an operational mode selection command received from an application being executed by the application processor, the operational mode selection command selecting, from a plurality of operational modes, an operational mode of the application; determine connection statuses of a plurality of wireless network interfaces of the embedded computing device; determine, in accordance with a wireless network configuration optimization heuristic, and based on the detected operational mode selection command and the determined connection statuses of the plurality of wireless network interfaces, a state configuration for the plurality of wireless network interfaces; and direct the plurality of wireless network interfaces to operate in accordance with the state configuration.
    Type: Grant
    Filed: January 16, 2017
    Date of Patent: August 7, 2018
    Assignee: Verizon Patent and Licensing Inc.
    Inventors: Quentin N. Robinson, Carl Wang, Shamik Basu, Theodore Stecko
  • Patent number: 10045182
    Abstract: A short-range wireless communication apparatus includes a contactless communicator, a short-range wireless communicator, a power detector for detecting a power-on state and a power-off state, and a controller for registering the mobile terminal establishing contactless communication upon determining that the contactless communication is established between the mobile terminal and the contactless communicator, and for permitting connection of the short-range wireless communication between the short-range wireless communicator and the mobile terminal until determining that the short-range wireless communication becomes unconnectable. When the power detector detects that the power-on state is changed to the power-off state and the power-off state is then changed to the power-on state, the controller causes the short-range wireless communicator to search for the registered mobile terminal. When the search is unsuccessful, the controller unregisters the mobile terminal for which the search is unsuccessful.
    Type: Grant
    Filed: March 23, 2015
    Date of Patent: August 7, 2018
    Assignee: DENSO CORPORATION
    Inventor: Hikaru Ochi
  • Patent number: 10027393
    Abstract: Methods and apparatus to operating multiple single-input single-output beamform links. An example method includes determining strengths of a first wireless link between a first transmission sector and a first receiver sector and a second wireless link between a second transmission sector and a second receiver sector, determining whether the first and second wireless links is busy or idle, selecting an idle wireless link of the plurality of wireless links based on the strengths of the first and second wireless links that are idle, and establishing a transmission connection with the selected idle wireless link.
    Type: Grant
    Filed: December 23, 2015
    Date of Patent: July 17, 2018
    Assignee: INTEL IP CORPORATION
    Inventors: Laurent Cariou, Carlos Cordeiro
  • Patent number: 9992726
    Abstract: A wireless communication system for use in a process environment uses mesh and possibly a combination of mesh and point-to-point communications to produce a wireless communication network that can be easily set up, configured, changed and monitored, thereby making a wireless communication network that is less expensive, and more robust and reliable. The wireless communication system allows virtual communication paths to be established and used within the process control system in a manner that is independent of the manner in which the wireless signals are sent between different wireless transmitting and receiving devices within the process plant. Still further, communication analysis tools are provided to enable a user or operator to view the operation of the wireless communication network to thereby analyze the ongoing operation of the wireless communications within the wireless communication network.
    Type: Grant
    Filed: February 15, 2016
    Date of Patent: June 5, 2018
    Assignee: FISHER-ROSEMOUNT SYSTEMS, INC.
    Inventors: John R. Shepard, Joe Nelson
  • Patent number: 9961558
    Abstract: Methods, systems, apparatuses, and devices are described for wireless communications. In one method, an opportunity may be identified for a first operator to perform a clear channel assessment (CCA) for a shared spectrum. The opportunity may be based on a priority of the first operator with respect to at least one other operator associated with the shared spectrum. The CCA may be performed for the shared spectrum during the identified opportunity to determine whether the shared spectrum is available for a transmission during a transmission interval.
    Type: Grant
    Filed: June 27, 2016
    Date of Patent: May 1, 2018
    Assignee: QUALCOMM Incorporated
    Inventors: Wanshi Chen, Tao Luo, Yongbin Wei, Durga Prasad Malladi
  • Patent number: 9936505
    Abstract: A base station can prevent deterioration of data channel application control accuracy due to influence of transmission power control to a control channel. In the base station, each encoding section performs encoding processing to an SCCH (Shared Control Channel) of each mobile station, each modulating section performs modulation processing to the encoded SCCH, an arranging section arranges the SCCH to each mobile station to one of a plurality of subcarriers which configure an OFDM symbol, and transmission power control section controls transmission power of the SCCH based on reception quality information reported from each mobile station. The arranging section arranges a plurality of the SCCH to be under transmission power control to one of the subcarriers so that combinations at resource blocks are the same.
    Type: Grant
    Filed: October 10, 2016
    Date of Patent: April 3, 2018
    Assignee: SUN PATENT TRUST
    Inventors: Akihiko Nishio, Masaru Fukuoka
  • Patent number: 9893921
    Abstract: A multicarrier modem has a plurality of carriers over which data is transmitted. By assigning, foe example, one or more different margins to the individual carriers the data rate and impairment immunity can be increased.
    Type: Grant
    Filed: November 10, 2016
    Date of Patent: February 13, 2018
    Assignee: TQ DELTA, LLC
    Inventor: Marcos C. Tzannes
  • Patent number: 9853753
    Abstract: Embodiments provide a repair method for missing detection of a control channel and relate to the field of communications. The method includes detecting whether a user equipment misses detecting a physical downlink control channel. After it is detected that the user equipment misses detecting the physical downlink control channel, a repair is performed using a repair policy.
    Type: Grant
    Filed: April 28, 2016
    Date of Patent: December 26, 2017
    Assignee: Huawei Technologies Co., Ltd
    Inventor: Jun Lu
  • Patent number: 9820245
    Abstract: Methods and apparatus for selecting samples for secondary synchronization signal (SSS) detection are described. Several alternatives are provided for efficient cell identifier detection. In a first alternative, multiple bursts of a signal received from a cell are sampled with non-uniform spacing between sampling intervals to determine a sequence for cell identification. In a second alternative, samples of a first and a second signal received from a stronger cell are cancelled, and a sequence for detecting a weaker cell is determined by reducing effects of the samples of a third signal received from the weaker cell which do not overlap with the primary synchronization signal (PSS) or SSS of the stronger cell. In a third alternative, a sequence for detecting a weaker cell is determined by reducing effects of any sampled bursts that correspond to a high transmission power portion of a signal from a stronger cell.
    Type: Grant
    Filed: February 17, 2014
    Date of Patent: November 14, 2017
    Assignee: QUALCOMM Incorporated
    Inventors: Tao Luo, Kapil Bhattad, Xiaoxia Zhang, Taesang Yoo, Xiliang Luo, Ke Liu
  • Patent number: 9807699
    Abstract: Methods and apparatuses are described herein for adapting clear channel assessment (CCA) thresholds with or without Transmit Power Control (TPC) are disclosed. An IEEE 802.11 station (STA) may dynamically calculate a STA specific transmit power control (TPC) value and a STA specific clear channel assessment (CCA) value based on a target TPC parameter and a target CCA parameter. The target TPC parameter and the target CCA parameter may be received from an IEEE 802.11 cluster head configured to control TPC and CCA for a plurality of STAs associated with the BSS. The target TPC parameter and the target CCA parameter also may be related. The STA may then determine whether a carrier sense multiple access (CSMA) wireless medium of a wireless local area network (WLAN) basic service set (BSS) is occupied or idle based on the STA specific CCA value.
    Type: Grant
    Filed: September 12, 2014
    Date of Patent: October 31, 2017
    Assignee: InterDigital Patent Holdings, Inc.
    Inventors: Oghenekome Oteri, Pengfei Xia, Xiaofei Wang, Hanqing Lou, Monisha Ghosh, Robert L. Olesen, Nirav B. Shah, Frank La Sita
  • Patent number: 9807731
    Abstract: An efficient method for providing both dedicated and simulcast services over a common wireless infrastructure is described. The services can be available to a single terminal as well as to a multiplicity of terminals simultaneously. The method uses time division multiplexing and orthogonal frequency division multiple access for simulcasting information and transmitting dedicated message information from a plurality of base stations forming a cellular pattern over the same wireless frequency channel. The method comprises the steps of constructing frames for transmission by the plurality of base stations comprising control information, simulcast information and dedicated message information within predetermined time slots of the frames and allocating the simulcast information and the dedicated message information to time slots of the same frame predetermined by the control information of the frame. The underlying modulation technology used is OFDM and thereby the channel delay-dispersion is minimized.
    Type: Grant
    Filed: October 28, 2013
    Date of Patent: October 31, 2017
    Assignee: AT&T Intellectual Property II, L.P.
    Inventors: Zoran Kostic, Nelson Ray Sollenberger, James F. Whitehead
  • Patent number: 9781769
    Abstract: A method and an apparatus for controlling a wireless network connection are provided. The method includes detecting a signal strength in a connected wireless network, determining whether the detected signal strength is greater than a first threshold, if the detected signal strength is not greater than the first threshold determining whether an error occurs at least once in data transmission through the connected wireless network, and controlling a connection state of the connected wireless network according to a result of the error determination.
    Type: Grant
    Filed: March 27, 2015
    Date of Patent: October 3, 2017
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Donghoo Park, Jayoung Gu, Jongman Park
  • Patent number: 9712358
    Abstract: A method for generating a physical layer (PHY) data unit for transmission via a communication channel is described where the PHY data unit conforms to a first communication protocol. Orthogonal frequency division multiplexing (OFDM) symbols for a data field of the PHY data unit are generated according to a range extension coding scheme that corresponds to a range extension mode of the first communication protocol. A preamble of the PHY data unit is generated, the preamble having i) a first portion that indicates a duration of the PHY data unit and ii) a second portion that indicates whether at least some OFDM symbols of the data field are generated according to the range extension coding scheme.
    Type: Grant
    Filed: October 24, 2014
    Date of Patent: July 18, 2017
    Assignee: Marvell World Trade Ltd.
    Inventors: Hongyuan Zhang, Hui-Ling Lou, Su Khiong Yong
  • Patent number: 9713018
    Abstract: A UE may use a same antenna for both Bluetooth communications and WWAN cell search and measurement operations. In order to avoid interference, the UE may adjust the periodicity of the WWAN cell search and measurement operations. Adjustment of the WWAN cell search and measurement periodicity may be based on a link quality of the Bluetooth communications.
    Type: Grant
    Filed: October 24, 2014
    Date of Patent: July 18, 2017
    Assignee: QUALCOMM Incorporated
    Inventors: Soumya Das, Nitinkumar Barot
  • Patent number: 9698958
    Abstract: Various aspects of the disclosure provide a method of operating a user equipment (UE) to determine and report a throughput enhancing channel quality indicator (CQI) value when a physical channel between the UE and a base station is temporally uncorrelated. Reporting such CQI value may maximize the throughput of the channel when it remains temporally uncorrelated. In one aspect of the disclosure, the UE communicates with a base station utilizing a channel and determines that the channel is temporally uncorrelated. The UE further determines a plurality of CQIs in a first CQI reporting mode and computes the respective throughputs of the channel based on the plurality of CQIs. In addition, the UE selects a CQI of the plurality of CQIs corresponding to the highest throughput among the plurality of throughputs, and reports the selected CQI to the base station in a second CQI reporting mode while the channel remains temporally uncorrelated.
    Type: Grant
    Filed: March 24, 2015
    Date of Patent: July 4, 2017
    Assignee: QUALCOMM Incorporated
    Inventors: Linda Yunlu Bai, Cheng-An Yang, Harish Venkatachari, Nate Chizgi, Shashank Maiya
  • Patent number: 9686801
    Abstract: The architecture of the high-speed shared service provides a Node B yielding various sets of information that answer a set of basic questions that a data service needs. Many potential measurements the Node B can make are provided to the RNC to enable a resource manager to perform certain functions and which can be used to answer the set of basic questions.
    Type: Grant
    Filed: August 13, 2013
    Date of Patent: June 20, 2017
    Assignee: InterDigital Technology Corporation
    Inventor: James M. Miller
  • Patent number: 9591525
    Abstract: A new device is deployed to an area in which a network is provided. The new device may join the network using a single handshake via a neighboring device that is a member of the network and register with a network management system managing the network. If the network is overloaded or has limited bandwidth remaining, the network may refuse to admit the new device, or if the new device is isolated, may force some devices that are members of the network to leave or migrate from the network to allow the isolated device to join the network.
    Type: Grant
    Filed: May 25, 2012
    Date of Patent: March 7, 2017
    Assignee: ITRON GLOBAL SARL
    Inventors: Daniel Popa, Viet-Hung Nguyen, Mehdi Mani, Michael T. Garrison Stuber, Bastien Mainaud
  • Patent number: 9584416
    Abstract: Systems, methods, and apparatuses are disclosed to facilitate wireless communications. User equipment (UE), such as a mobile device, identifies data congestion and transmits a recommended data rate modification wireless signal (e.g., a recommended reduced data rate) to the base station that is transmitting data to the UE. The base station may reduce the data rate of the down link (DL) to the reduced data rate. The UE may then receive data from the base station at the reduced data rate. Therefore, flow control may be implemented at the base station side (e.g., sometimes referred to as the Network (NW) side) based upon the reduced data rate modification determined and transmitted by the UE to the base station. In this way, the data rate transmission to the UE can be reduced to allow the UE to successfully process received data and successfully perform its functions.
    Type: Grant
    Filed: June 7, 2010
    Date of Patent: February 28, 2017
    Assignee: QUALCOMM Incorporated
    Inventors: Sai Yiu Duncan Ho, Shailesh Maheshwari
  • Patent number: 9548844
    Abstract: A preamble signal is an OFDM signal, and is a real-part signal obtained by removing an imaginary-part signal from a signal in the time domain that is generated by an IFFT process being performed on a signal in the frequency domain obtained by assigning preamble data to subcarriers in accordance with a predetermined arrangement pattern. The predetermined arrangement pattern indicates that preamble data is assigned to any of subcarriers given numbers equal to or less than N/2?1 and the preamble data is not assigned to subcarriers given numbers more than N/2?1, where a plurality of subcarriers are numbered by integers from 0 to N?1 (N is an integer) in ascending order with respect to the center frequency of each subcarrier.
    Type: Grant
    Filed: September 25, 2012
    Date of Patent: January 17, 2017
    Assignee: MegaChips Corporation
    Inventor: Handa Chen
  • Patent number: 9504048
    Abstract: Provided are a method and apparatus for acquiring channel responses of a self-interference channel and a full-duplex communication device. The method comprises: obtaining an estimate value of a channel response of the self-interfering channel by employing multiple reference signals to perform a channel estimation on the self-interfering channel; determining a stable range of each channel frequency-domain response on the basis of the channel response estimated value; randomly selecting a frequency point within the stable range of each channel frequency-domain response or selecting a frequency point of a greater channel response to serve as an emission frequency point of the reference signals, and, when an interrelation of the channel responses on the emission frequency point and on a non-emission frequency point is acquired, acquiring all the channel responses on time-domain and frequency-domain on the basis of a reception signal corresponding to the reference signals on the emission frequency point.
    Type: Grant
    Filed: December 19, 2014
    Date of Patent: November 22, 2016
    Assignee: Huawei Technologies Co., Ltd.
    Inventors: Hong Cheng, Rui Wang, Yinggang Du
  • Patent number: 9501376
    Abstract: Indirect testing of multiple I/O interface signal lines concurrently. A system distributes a test data sequence to a group of signal lines. Each signal line receives the test data sequence and checks for errors in receiving the test data sequence at an associated I/O buffer. The system includes an error detection mechanism for each signal line. The system also includes an error detection mechanism for the group of multiple signal lines. If the I/O buffer receives any bit of the test data sequence incorrectly, the signal line error detection indicates an error. The group error detection accumulates pass/fail information for all signal lines in the group. Rather than sending a pass/fail indication on every cycle of the test, the group error detection can count pass/fail information for all signal lines of the group for all bits of the test data sequence and indicate error results after the entire test data is received.
    Type: Grant
    Filed: May 6, 2014
    Date of Patent: November 22, 2016
    Assignee: INTEL CORPORATION
    Inventors: Christopher Nelson, Bharani Thiruvengadam
  • Patent number: 9485335
    Abstract: A method of operation in a high-speed Ethernet transceiver is disclosed. The method includes engaging in an autonegotiation process with a link partner transceiver to indicate whether one or more sub-rate modes of operation are supported. Each sub-rate mode of operation corresponds to a sub-data rate that is less than a maximum data rate. The autonegotiation process is terminated. The transceiver then participates in a training process. The training process includes receiving a first training sequence corresponding to a first sub-data rate that is less than the maximum data rate. A signal quality parameter for the received first training sequence is measured. The training sequence is terminated based on the measured signal quality parameter failing a predetermined criteria. A second training sequence is then initiated that corresponds to a second sub-data rate that is less than the first sub-data rate without starting a second autonegotiation process.
    Type: Grant
    Filed: August 13, 2013
    Date of Patent: November 1, 2016
    Assignee: Aquantia Corp.
    Inventors: Paul Langner, Hossein Sedarat
  • Patent number: 9451563
    Abstract: Methods, systems, and devices are described for improve network performance, such as throughput and PER, by allowing nodes to adjust energy detection (ED) threshold levels. For example, a method for Wi-Fi wireless communication includes determining, by a first node, an ED threshold level for a second node of a wireless network based at least in part on a metric for the first node. The method may also include signaling, from the first node to the second node, an ED level set element that indicates the determined ED threshold level. In another example, a method includes signaling, by a first node, an ED level adjustment capability of the first node to one or more nodes in a wireless network.
    Type: Grant
    Filed: October 16, 2014
    Date of Patent: September 20, 2016
    Assignee: QUALCOMM Incorporated
    Inventors: Yan Zhou, Simone Merlin
  • Patent number: 9439204
    Abstract: A wireless device includes a detecting unit, a sending unit, and a selecting unit. The detecting unit detects, for each communication channel while switching multiple communication channels, interference information. The sending unit sends to a destination wireless device, a packet in which the detected interference information are sequentially stored for each wireless device. The selecting unit receives the packet. When the wireless device does not correspond to the destination wireless device, the selecting unit transfers the packet. When the wireless device corresponds to the destination wireless device, the selecting unit selects, on the basis of the pieces of the interference information that are sequentially stored in the packet and the detected interference information, a communication channel.
    Type: Grant
    Filed: September 9, 2014
    Date of Patent: September 6, 2016
    Assignee: FUJITSU LIMITED
    Inventors: Satoshi Kozaki, Kyohei Tanaka
  • Patent number: 9419786
    Abstract: A multi-lane serial link signal receiving system includes a clock generating circuit and a plurality of data receiving channels. The clock generating circuit provides a fundamental clock signal. Each of the data receiving channels receives an input signal and the fundamental clock signal, and includes a phase detecting circuit, a multi-order digital clock data recovery circuit and a phase adjusting circuit. The phase detecting circuit samples the input signal according to a sampling clock signal to generate a sampled signal. The multi-order digital clock data recovery circuit performs a digital clock data recovery process on the sampled signal to generate phase adjusting information. The phase adjusting circuit adjusts the phase of the fundamental clock signal according to the phase adjusting information to generate the sampling clock signal.
    Type: Grant
    Filed: March 27, 2015
    Date of Patent: August 16, 2016
    Assignee: MStar Semiconductor, Inc.
    Inventors: Po-Nien Lin, Meng-Tse Weng, Jiunn-Yih Lee
  • Patent number: 9413499
    Abstract: To obtain a high frequency diversity effect while suppressing inter-code interference in code multiplexing transmission in an OFDM-based radio access scheme, a transmission apparatus is provided with an orthogonal spreading code generating section (10) that generates different spreading codes based on orthogonal code sequences, a phase rotation giving section (11) and spreading modulation section (12) which provide the information symbols or spreading codes with different phase rotation for each symbol sequence and then, spreads the information symbols with the spreading codes for each symbol sequence, and a multiplexing section (13) that multiplexes spread symbols of different symbol sequences, where the information symbols or the spreading codes are rotated by a phase rotation amount such that overlaps in a signal constellation in polar coordinates of spread symbols for transmitting different information symbols are controlled to within a required range.
    Type: Grant
    Filed: March 1, 2010
    Date of Patent: August 9, 2016
    Assignee: NTT DOCOMO, INC.
    Inventors: Kenichi Higuchi, Yoshihisa Kishiyama
  • Patent number: 9408121
    Abstract: Embodiments of the present invention provide a method and an apparatus for enhancing measurement in a wireless communication system. The method includes: obtaining, according to a measurement period or triggered by an event, a measurement amount, where the measurement amount includes a ratio of a valid signal based on a reference signal to a non-valid signal based on the reference signal measured based on the reference signal; reporting the measurement amount to a base station; or performing cell selection or cell reselection according to the measurement amount.
    Type: Grant
    Filed: July 21, 2014
    Date of Patent: August 2, 2016
    Assignee: Huawei Technologies Co., Ltd.
    Inventors: Dengkun Xiao, Jing Han, Anjian Li, Yuan He, Tong Wu, Jie Cui, Liji Wu
  • Patent number: 9374750
    Abstract: A method includes receiving information indicating a user equipment is to be handed over from a source base station and scheduling transmission of a control channel for said user equipment in dependence on identity information associated with said user equipment.
    Type: Grant
    Filed: April 11, 2011
    Date of Patent: June 21, 2016
    Assignee: Nokia Siemens Networks Oy
    Inventors: Harri Kalevi Holma, Hannu Pekka Matias Vaitovirta, Antti Anton Toskala
  • Patent number: 9369242
    Abstract: A method of wireless communication includes receiving an uplink grant for one or more pending HARQ processes waiting to perform a retransmission. The method also includes selecting each pending HARQ process that has not received a NACK. The method further includes terminating an oldest selected HARQ process when the uplink grant is insufficient to perform the retransmission for the plurality of pending HARQ processes.
    Type: Grant
    Filed: December 23, 2013
    Date of Patent: June 14, 2016
    Assignee: QUALCOMM INCORPORATED
    Inventors: Ming Yang, Tom Chin, Guangming Shi
  • Patent number: 9237495
    Abstract: A method for performing handover by wireless User Equipment (UE) is provided. The UE includes a Long Term Evolution-Mobile Extreme Convergence (LTE-MXC) application processor, a LTE processor and a Digital Signal Processor (DSP). The UE buffers a set of IP packets when a Radio Access Technology (RAT) indicator is less than a pre-defined threshold and sends the set of IP packets to the LTE processor and the DSP. The LTE processor transmits the set of IP packets to the LTE network and sends acknowledgement signals to the LTE-MXC application processor and the DSP. When the handover is complete, the LTE processor sends the transmission status of the set of IP packets to the DSP. The UE also includes multimode Radio Resource Control (RRC) and Non-Access Stratum (NAS) modules.
    Type: Grant
    Filed: June 11, 2012
    Date of Patent: January 12, 2016
    Assignee: Apple Inc.
    Inventor: Mukesh Taneja
  • Patent number: 9224292
    Abstract: The present invention provides a method for broadcasting a control message across an existing broadcast transport medium such as TV, Radio, Webcasts, Smart Phones/Tablets, Audio Buttons/Toys and PA/audio systems via a common acoustic channel with normal traditional broadcasts over those mediums to control computing devices, especially smart mobile devices such as smart phones or tablets. The present invention also involves a method for encoding the control message onto an acoustic wave composed of active sinusoidal frequency components selected out of monitored possible frequencies according to the concept of mathematical combinations. This encoding method is aimed at using a minimum amount of transmitted energy to get a maximum amount of data with as little reflective noise as possible.
    Type: Grant
    Filed: January 25, 2013
    Date of Patent: December 29, 2015
    Inventor: Kerry L. Davis
  • Patent number: 9219569
    Abstract: Various aspects of the disclosure described herein provide for optimizing rate control during a selection of a communications profile from a set of communications profiles by taking into account effective frame aggregation size as a function of packet error rate (PER). An expected throughput may also be determined for each communications profile and updated after each transmission so that a communications profile having the highest expected throughput may be chosen for a particular frame transmission.
    Type: Grant
    Filed: March 15, 2013
    Date of Patent: December 22, 2015
    Assignee: QUALCOMM INCORPORATED
    Inventors: Qinghai Gao, Vishnu Vardhan Bala Krishnan, Shu Du, Zhanfeng Jia
  • Patent number: 9203589
    Abstract: A method includes receiving reference signals in a mobile communication terminal, the mobile communication terminal being designed to receive data-carrying signals that are transmitted from a base station using one of multiple predefined Modulation and Coding Schemes (MCSs). Based on the received reference signals, using processing circuitry in the terminal, effective Signal to Noise Ratios (SNRs) are calculated for the MCSs in a predefined partial subset of the MCSs that does not include all MCSs. The effective SNRs, for the MCSs that are not part of the predefined partial subset, are estimated by interpolating among two or more calculated effective SNR measures of the MCSs in the predefined partial subset using an interpolation function. Channel feedback is calculated based on the calculated effective SNRs and the estimated effective SNRs. The channel feedback is transmitted from the terminal, for use in transmitting the data carrying signals from the base station.
    Type: Grant
    Filed: October 2, 2013
    Date of Patent: December 1, 2015
    Assignee: MARVELL INTERNATIONAL LTD.
    Inventors: Yona Perets, Ezer Melzer
  • Patent number: 9198102
    Abstract: A mobile communication method includes: a step of transmitting, by a radio base station eNB#3, “Forwarding Request” on downlink user data addressed to a mobile station UE to a radio base station eNB#1; a step of switching, in response to the “Forwarding Request”, by the radio base station eNB#1, a forwarding destination of the downlink user data addressed to the mobile station UE from the radio base station eNB#2 to the radio base station eNB#3; and a step of transmitting, by the radio base station eNB#3, the downlink user data addressed to the mobile station UE to the mobile station UE.
    Type: Grant
    Filed: September 20, 2013
    Date of Patent: November 24, 2015
    Assignee: NTT DOCOMO, INC.
    Inventors: Hideaki Takahashi, Wuri Andarmawanti Hapsari, Kenichiro Aoyagi, Takayuki Watanabe, Tatsuro Yajima
  • Patent number: 9167604
    Abstract: The methods and an apparatuses for scanning in WLAN are disclosed. A method of a scanning of a station (STA) may include monitoring a channel during a probedelay based on a MAC sublayer management entity (MLME)-SCAN.request primitive indicating an active scanning for a target Access Point (AP), receiving a frame including a channel congestion indicator from an AP during the probedelay, generating a MLME-SCAN.change request primitive to request a change of a scanning type parameter included in the MLME-SCAN.request primitive when the channel congestion indicator indicates that the channel is congested, generating a MLME-SCAN.change confirm primitive to confirm the change of the scanning type parameter included in the MLME-SCAN.request primitive as a response of the MLME-SCAN.change request primitive, and performing a passive scanning for the target AP based on the MLME-SCAN.change confirm primitive.
    Type: Grant
    Filed: September 6, 2013
    Date of Patent: October 20, 2015
    Assignee: LG Electronics Inc.
    Inventors: Gi Won Park, Ki Seon Ryu, Jin Sam Kwak, Han Gyu Cho
  • Patent number: 9137775
    Abstract: A communications apparatus is disclosed. A receiving module receives an observed time difference of arrival (OTDOA) request and a search list of cells provided by a network at a second time point. A comparing module compares the received search list to a stored search list of cells which is received at a first time point and stored in a database. A searching module searches at least one of the cells from the received search list by using different search ranges adjusted according to the comparison result, and stores the at least one of the cells in the database. A measuring module performs OTDOA measurements by detecting positioning reference signals (PRS) from the at least one of the cells.
    Type: Grant
    Filed: October 30, 2013
    Date of Patent: September 15, 2015
    Assignee: MEDIATEK INC.
    Inventors: Tsung-Yu Chiou, Yuan-Wen Ting
  • Patent number: 9106330
    Abstract: A wireless communication apparatus in a first wireless system is provided with first, second and third units, and a controller. The first unit transmits frames over a frequency channel using a short or long IFS as compared with a specific one used in a second wireless system with a communication range wider than the first wireless system. The second unit receives frames over the channel. The third unit determines an error characteristic in the received frames and/or a busy status of the channel. The controller controls at least either one of whether to change the frequency channel or not, and whether to change a duration of an interframe space or not.
    Type: Grant
    Filed: March 1, 2012
    Date of Patent: August 11, 2015
    Assignee: KABUSHIKI KAISHA TOSHIBA
    Inventors: Ryoko Matsuo, Tomoko Adachi, Tomoya Tandai, Takeshi Tomizawa
  • Patent number: 9037134
    Abstract: Aspects describe communications environments in which femtocell capability is provided to devices within the communications network. A non-femto enabled device and/or a femto enabled device can communicate with a femto enabled device in the same geographical area for femto-enabled peer-to-peer communication. Two non-femto enabled devices can be provided femto functionality through utilization of a femto enabled device, which operates as a hub between the two devices. Other aspects relate to enhanced position determination, adaptive coverage enhancement, local mobile networks, open access femtocells without a backhaul, and local broadcast of media though utilization of femto enabled devices.
    Type: Grant
    Filed: April 30, 2009
    Date of Patent: May 19, 2015
    Assignee: QUALCOMM Incorporated
    Inventors: Matthew S. Grob, Mehmet Yavuz, Sanjiv Nanda
  • Patent number: 9026124
    Abstract: A system and method for interference mitigation in a wireless communications system are provided. A method for interference mitigation in a controller includes coordinating with other controllers to establish a cooperative agreement, receiving information from a communications device served by the controller, scheduling a transmission opportunity for the communications device based on an indicator and the cooperative agreement, and receiving a transmission from the communications device at the scheduled transmission opportunity.
    Type: Grant
    Filed: March 26, 2010
    Date of Patent: May 5, 2015
    Assignee: Futurewei Technologies, Inc.
    Inventor: Jack Anthony Smith
  • Patent number: 9020499
    Abstract: A method and apparatus for fast cell selection by a mobile wireless device. The mobile wireless device detects when a first wireless cell fails a set of stored suitability criteria and searches for and locates a set of candidate wireless cells to associate with. The mobile wireless device measures at least one received signal metric for each candidate wireless cell in the set of candidate wireless cells. When a candidate cell in the set of candidate wireless cells is identically the first wireless cell, the mobile wireless device evaluates the suitability of the candidate wireless cell using the stored set of suitability criteria for the first wireless cell and the measured at least one received signal metric for the candidate wireless cell. The mobile wireless communication device associates with the candidate wireless cell when the candidate wireless cell meets the stored set of suitability criteria.
    Type: Grant
    Filed: October 29, 2012
    Date of Patent: April 28, 2015
    Assignee: Apple Inc.
    Inventors: Giri Prassad Deivasigamani, Venkatasubramanian Ramasamy, Sharad Garg, Srinivasan Vasudevan
  • Patent number: 9020062
    Abstract: Systems and methods are provided for decoding signal vectors in multiple-input multiple-output (MIMO) systems, where the receiver has received one or more signal vectors based on the same transmitted vector. The receiver linearizes each received signal vector using one or more zero-forcing, MMSE, or other suitable linear equalizers. The components of the equalized signal vectors may be combined using maximum-ratio combining to form the components of a combined equalized signal vector. The components of the combined equalized signal vector may then be decoded individually using a linear decoder.
    Type: Grant
    Filed: April 24, 2014
    Date of Patent: April 28, 2015
    Assignee: Marvell World Trade Ltd.
    Inventors: Jungwon Lee, Woong Jun Jang, Hui-Ling Lou
  • Patent number: 9008668
    Abstract: A service handover control apparatus and a method using the apparatus are provided. The service handover control apparatus includes a service handover management unit collecting information associated with a transmitting terminal and a wireless access network, which operate based on an Internet Protocol multimedia subsystem (IMS), and outputting a control signal which controls service handovers of the transmitting terminal and the receiving terminal based on the collected information; and a service handover controller providing the service handover management unit with the information associated with the transmitting terminal and the receiving terminal, and controlling the service handovers of the transmitting terminal and the receiving terminal based on the control signal.
    Type: Grant
    Filed: November 13, 2007
    Date of Patent: April 14, 2015
    Assignees: Samsung Electronics Co., Ltd., Fraunhofer Gesellschaft zur Foerderung der angewandten Forschung e.V.
    Inventors: Su-won Lee, Xiaoyu Liu, John Williams Floroiu, Eun Sun Jung, Hee Jin Jang, Marius Corici, Byoung Joon Lee
  • Patent number: 9008040
    Abstract: Embodiments of the present invention disclose a handover method, User Equipment (UE), and a network side device, which can shorten a handover delay of a control plane and an interrupt delay of user plane data. A handover method includes: obtaining, by a UE, a Time Advance (TA) of a target cell before a handover; and obtaining an Uplink Grant (UL Grant) sent by the target cell; and then sending a Handover Complete message to the target cell with the TA on a resource that is corresponding to the UL Grant.
    Type: Grant
    Filed: December 23, 2011
    Date of Patent: April 14, 2015
    Assignee: Huawei Technologies Co., Ltd.
    Inventors: Weiwei Song, Yuhua Chen, Jing Han, Zhiyu Yan, Yinghui Yu, Xin Xiong
  • Patent number: 8995355
    Abstract: A wireless communication apparatus that transmits data in certain communication interval to a receiving apparatus, using one or more communication channels among a plurality of adjacent communication channels, is provided. The apparatus includes: a setting unit configured to set the one or more communication channels for transmitting the data; a transmission unit configured to transmit the data using the one or more set communication channels; and a detection unit configured to detect interference with other wireless communication apparatuses, when the transmission unit transmits the data using the one or more set communication channels; wherein the setting unit changes the number of the one or more communication channels based on a time duration that the data transmission has been restrained due to the detected interference, and the communication interval.
    Type: Grant
    Filed: December 2, 2009
    Date of Patent: March 31, 2015
    Assignee: Canon Kabushiki Kaisha
    Inventor: Hidetada Nago