Combining Or Distributing Information Via Code Word Channels Using Multiple Access Techniques (e.g., Cdma) Patents (Class 370/441)
  • Patent number: 10320432
    Abstract: The appliance for receiving radio frequency signals, usable in particular for the management of uplink signals, comprises an input port of a radio frequency input signal, an amplification unit connected to the input port an output port connected to the amplification unit, an adjustable notch filter operatively connected to the amplification unit, a detection unit of the interference frequency of a disturbance signal of the input signal, an adjustment unit operatively connected to the adjustable notch filter and to the detection unit and able to adjust the central frequency of the adjustable notch filter on the interference frequency.
    Type: Grant
    Filed: June 15, 2015
    Date of Patent: June 11, 2019
    Assignee: Teko Telecom S.r.l.
    Inventor: Massimo Notargiacomo
  • Patent number: 10264533
    Abstract: The present disclosure relates to a pre-5th-Generation (5G) or 5G communication system to be provided for supporting higher data rates Beyond 4th-Generation (4G) communication system such as Long Term Evolution (LTE). The present disclosure provides a power allocating method. A User Equipment (UE) receives power control indication information from a control node, obtains a power control mode, and/or, uplink transmission power configuration information. The UE allocates power for each uplink carrier, based on the power control mode, and/or, the uplink transmission power configuration information. By applying the present disclosure, power waste generated in the following scene may be reduced. A scheduled uplink signal cannot be transmitted in a corresponding carrier due to a busy channel. Subsequently, uplink scheduling efficiency of the UE may be improved, and the whole network efficiency may also be enhanced.
    Type: Grant
    Filed: May 13, 2016
    Date of Patent: April 16, 2019
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Yi Wang, Shichang Zhang, Yingyang Li, Jingxing Fu
  • Patent number: 10200165
    Abstract: The present invention relates to a method and apparatus for beamformed transmission in a wireless local area network. According to one aspect of the present invention, a method for transmitting a Physical layer Protocol Data Unit (PPDU) frame to a plurality of stations (STAs) by an Access Point (AP) in a wireless local area network may be provided. The method may include transmitting a SIGNAL field of the PPDU frame, the SIGNAL field including beamforming information indicating whether beamforming is applied to respective data units of the PPDU frame, and transmitting the data units of the PPDU frame, the data units being individually beamformed or not beamformed according to the beamforming information.
    Type: Grant
    Filed: October 5, 2015
    Date of Patent: February 5, 2019
    Assignee: NEWRACOM, INC.
    Inventor: Yongho Seok
  • Patent number: 10181892
    Abstract: An interference cancellation repeater for canceling an interference signal included in an input signal including a first adaptive filter configured to generate a first estimated signal; a second adaptive filter configured to generate a second estimated signal; a first scaler configured to scale the first estimated signal based on a first scale factor determined according to a channel state; a second scaler configured to scale the second estimated signal based on a second scale factor determined according to the channel state; a first canceller configured to generate a first interference canceled signal based on the input signal and the scaled first estimated signal; and a second canceller configured to generate a second interference canceled signal based on the first interference canceled signal and the scaled second estimated signal.
    Type: Grant
    Filed: October 13, 2017
    Date of Patent: January 15, 2019
    Assignee: SOLiD, INC.
    Inventors: Nagwon Kwon, Hyunchae Kim
  • Patent number: 10172030
    Abstract: A method of transmitting information on a modulation and coding scheme (MCS) in a wireless local area network system is provided. A responding station receives a physical layer protocol data unit (PPDU) from a requesting station, configures a MCS feedback (MFB) based on the PPDU, and transmits feedback information to the requesting station. If the MFB is configured as a response to a MFB request (MRQ) of the requesting station, the feedback information includes the configured MFB and a MFB type field indicating that the MFB is configured as a response to the MRQ of the requesting station. If the MFB is not configured as a response to the MRQ of the requesting station, the feedback information includes the configured MFB, a MFB type field indicating that the MFB is not configured as a response to the MRQ of the requesting station, and coding information indicating a PPDU coding type.
    Type: Grant
    Filed: December 10, 2015
    Date of Patent: January 1, 2019
    Assignee: LG ELECTRONICS INC.
    Inventors: Dae Won Lee, Byeong Woo Kang, Yong Ho Seok, Dong Wook Roh
  • Patent number: 10148297
    Abstract: In a splitter, a first band pass filter is connected between an antenna terminal and a first terminal, a high pass filter and a second band pass filter are connected between the antenna terminal and a second terminal, a pass band of the second band pass filter is higher than a pass band of the first band pass filter, a cut off frequency of the high pass filter is located closer to the high-frequency side than the pass band of the first band pass filter, the pass band of the second band pass filter is located closer to the high-frequency side than the cut off frequency, and the high pass filter also functions as a notch filter having an anti-resonant frequency in a transition region such that the steepness of the transition region between the pass band of the second band pass filter and the attenuated band is high.
    Type: Grant
    Filed: December 20, 2013
    Date of Patent: December 4, 2018
    Assignee: MURATA MANUFACTURING CO., LTD.
    Inventor: Sunao Yamazaki
  • Patent number: 10129171
    Abstract: A Time and Frequency Division (TaFD) scheduler based on a TaFD allocation unit based credit allocation may schedule both time and frequency division for both legacy Data Over Cable Service Interface Specification (DOCSIS) channels and DOCSIS orthogonal frequency division multiple access (OFDMA) channels. In embodiments, scheduling by the TaFD schedules both single carrier quadrature amplitude modulation (SC-QAM) transmissions and OFDMA upstream transmissions. In embodiments, the scheduler schedules based on TaFD allocation unit based credit allocations, where TaFD allocation unit based credits may be allocated for OFDMA overlapped regions. The credits may be dynamically adjusted based on channel utilization and an outstanding bandwidth demand or a prioritized pending bandwidth demand. The TaFD scheduler may use independent hierarchy priority queuing schemes.
    Type: Grant
    Filed: April 25, 2016
    Date of Patent: November 13, 2018
    Assignee: ARRIS Enterprises LLC
    Inventors: Ayham Al-banna, Gregory Gohman
  • Patent number: 9988896
    Abstract: Methods, techniques, and systems for transmitting a data frame of an electromagnetic (EM) telemetry signal to or from a downhole location can be performed using multi-channel transmissions in which at least two different channels at two different frequencies are used to send a long header and the data frame. At least a portion of the long header is transmitted at a first frequency, and at least a portion of the data frame and any remaining portion of the long header not transmitted at the first frequency are transmitted at one or more additional frequencies different from each other and the first frequency. In one example, only two channels are used: one channel is used to transmit all of the long header, another channel is used to transmit all of the data frame, and either of the channels is used to transmit an identifier identifying the type of the data frame.
    Type: Grant
    Filed: October 28, 2015
    Date of Patent: June 5, 2018
    Assignee: Evolution Engineering Inc.
    Inventors: David A. Switzer, Jili Liu, Mingdong Xu, Aaron W. Logan
  • Patent number: 9930665
    Abstract: Methods and apparatuses are provided for communication between a UE and a Node B in a communication system. The UE receives a control signal including one bit of frequency hopping information, a resource allocation type, a resource allocation, and a cyclic shift for a reference signal from the Node B. It is determined that the frequency hopping information is used as a part of resource allocation information, if the resource allocation type indicates that two sets of resource blocks are allocated. The UE transmits data based on the frequency hopping information, the resource allocation type, and the resource allocation included in the control signal. Each of the resource blocks comprises one or more resource block groups, and a size of each resource block group is determined based on an uplink bandwidth.
    Type: Grant
    Filed: June 22, 2015
    Date of Patent: March 27, 2018
    Assignee: Samsung Electronics Co., Ltd
    Inventors: Aris Papasakellariou, Joon-Young Cho, Ju-Ho Lee
  • Patent number: 9883520
    Abstract: An approach for selecting sets of communications channels involves determining the performance of communications channels. A set of channels is selected based on the results of performance testing and specified criteria. The participant generates data that identifies the selected set of channels and provides that data to other participants of the communications network. The participants communicate over the set of channels, such as by using a frequency hopping protocol. When a specified time expires or monitoring of the performance of the channel set identifies poor performance of the set of channels, the participant selects another set of channels for use in communications based on additional performance testing. By selecting channels based on the initial performance testing and performance monitoring, the communications network adaptively avoids channels with poor performance.
    Type: Grant
    Filed: June 27, 2016
    Date of Patent: January 30, 2018
    Assignee: BANDSPEED, INC.
    Inventors: Hongbing Gan, Bijan Treister, Efstratios Skafidas
  • Patent number: 9584588
    Abstract: Methods, systems, and computer-readable storage media for determining weights for selecting requests from a plurality of tenant queues in a multi-tenant system receiving measured response time and measured throughput for each tenant in a set of tenants being considered in a current period, for each tenant in the set of tenants, determining a weight based on respective measured response times and respective measured throughput, the weight being determined based on one of a previous weight, an initialized weight, a modified proportional and integral (PI) control, and a volunteer weight increase, providing a set of weights that includes weight for each tenant in the set of tenants, and transmitting the set of weights to an access mechanism, the access mechanism selecting tenant requests for processing by a shared resource.
    Type: Grant
    Filed: August 21, 2013
    Date of Patent: February 28, 2017
    Assignee: SAP SE
    Inventors: Arpit Mehta, Rouven Krebs
  • Patent number: 9578652
    Abstract: Provided are a method and apparatus for transmitting data in a wireless communication system. The method comprises the steps of: setting up a frame including both a control domain for transmitting scheduling information to a first terminal and a data domain for transmitting first data to the first terminal; and transmitting, to a second terminal, second data in the control domain. The frame comprises a plurality of orthogonal frequency division multiplexing (OFDM) symbols in a time domain. The control domain consists of a first number N (where N is any natural number equal to or less than 4) of OFDM symbols in the frame. The data domain consists of OFDM symbols other than a number N of OFDM symbols in the frame. The second data has a predetermined bit size.
    Type: Grant
    Filed: July 25, 2012
    Date of Patent: February 21, 2017
    Assignee: LG ELECTRONICS INC.
    Inventors: Dong Youn Seo, Han Byul Seo, Suck Chel Yang, Joon Kui Ahn
  • Patent number: 9564920
    Abstract: Methods and apparatus for wireless communication in a wireless communication network include determining a transmit data packet size at a transmitting device and computing an early termination scheme associated with a receiving device. Aspects of the methods and apparatus include increasing a transmission length of a Cycle Redundancy Check (CRC) field associated with the transmit data packet before transmission of the transmit data packet, wherein the transmitted length of the CRC field is based on the early decoding scheme. Aspects also include transmitting the transmit data packet with the increased transmission length of the CRC field to the receiving device.
    Type: Grant
    Filed: February 20, 2013
    Date of Patent: February 7, 2017
    Assignee: QUALCOMM Incorporated
    Inventors: Sony J. Akkarakaran, Sharad Deepak Sambhwani
  • Patent number: 9564956
    Abstract: A systems and method of channel estimation can be used in wireless environments. The systems and method can: (a) determine, by a transmitter, a number of receivers with which to communicate wirelessly, the number of receivers being at least one and corresponding to at least a first receiver; and (b) generate, by the transmitter, a frame to transmit to the first receiver, the frame generated based on a total number of receivers that is higher than the determined number of receivers.
    Type: Grant
    Filed: May 6, 2014
    Date of Patent: February 7, 2017
    Assignee: BROADCOM CORPORATION
    Inventors: David Garrett, Nihar Jindal, Jun Zheng, Srinath Puducheri Sundaravaradhan
  • Patent number: 9445414
    Abstract: A reference signal multiplexing method for multiple mobile stations includes: grouping together control signals for the multiple mobile stations; and multiplexing reference signals corresponding to the control signals by CDM over the same bandwidth as that of grouped control signals.
    Type: Grant
    Filed: March 12, 2015
    Date of Patent: September 13, 2016
    Assignee: NEC CORPORATION
    Inventors: Takamichi Inoue, Yoshikazu Kakura
  • Patent number: 9439141
    Abstract: A method that is implemented by a base station to decode a high speed dedicated physical control channel (HS-DPCCH) using a preamble and postamble of a hybrid automatic repeat request (HARQ) message while maintaining a fixed false alarm probability of interpreting a discontinuous transmission (DTX) as a HARQ acknowledgement (ACK) or HARQ negative acknowledgement (NACK). The method includes a set of steps, including receiving a signal from a user equipment (UE). The signal is despread using a G-RAKE demodulator. The despread signal is combined to produce a combined symbol estimate vector x including a preamble and postamble of the HARQ message. The combined symbol estimate vector x is checked to determine whether the signal includes a DTX, HARQ ACK or HARQ NACK, and then the DTX, HARQ ACK or HARQ NACK is output.
    Type: Grant
    Filed: April 9, 2013
    Date of Patent: September 6, 2016
    Assignee: TELEFONAKTIEBOLAGET L M ERICSSON (PUBL)
    Inventors: Michael Samuel Bebawy, Yi-Pin Eric Wang, Erik Larsson, Peter von Wrycza
  • Patent number: 9361178
    Abstract: A method is provided for serial data transmission in a bus system having at least two bus subscribers, which exchange messages via the bus, the send access to the bus for each message being assigned to a bus subscriber by the arbitration method according to CAN Standard ISO 11898-1; it being decided as a function of a suitable identification (EDL) which result from one of the CRC calculations started in parallel is used for checking the correct data transmission; for at least one value of the identification an additional condition being checked, and in response to its presence, fixed stuff bit sequences from one or more bits are inserted into the message by the sender, at least into parts of the message.
    Type: Grant
    Filed: July 19, 2012
    Date of Patent: June 7, 2016
    Assignee: ROBERT BOSCH GMBH
    Inventors: Florian Hartwich, Jan Scheuing
  • Patent number: 9282525
    Abstract: Methods and systems are disclosed for frequency-domain symbol and frame synchronization for multi-carrier communication systems. Received signals are sampled and converted into frequency components associated with subcarriers within the multi-carrier communication signals. Symbol synchronization is performed in the frequency domain by performing correlation(s) between frequency components of the received signal and frequency-domain synchronization symbol(s). After symbol synchronization, frame synchronization correlation is also performed in the frequency domain between frequency components of the received signal and frequency-domain synchronization symbol(s). The disclosed embodiments are particularly useful for symbol and frame synchronization in multi-carrier received signals for power line communication (PLC) systems and/or other harsh noisy communication environments.
    Type: Grant
    Filed: June 24, 2013
    Date of Patent: March 8, 2016
    Assignee: Freescale Semiconductor, Inc.
    Inventors: Jianqiang Zeng, Steven M. Bosze, Raja V. Tamma, Kevin B. Traylor, Khurram Waheed
  • Patent number: 9276669
    Abstract: One out of sixteen preamble signatures is selected. A code is produced based on the selected preamble signature. The produced code is phase rotated to produce a processed preamble signature signal. The processed preamble signature signal is used in processing the CDMA RACH signal and the CDMA RACH signal is used to access a CDMA system.
    Type: Grant
    Filed: December 22, 2014
    Date of Patent: March 1, 2016
    Assignee: InterDigital Technology Corporation
    Inventors: Stephen G. Dick, Charles A. Dennean, Eldad M. Zeira, Kyle Jung-Lin Pan, Sung-Hyuk Shin, Ariela Zeira
  • Patent number: 9231737
    Abstract: A first wireless device includes a coding module that encodes packets and adds dummy data to a second packet. A first receiver (i) in response to transmission of a first packet, receives a first acknowledgement (ACK) signal, and (ii) in response to transmission of the second packet, receives a second ACK signal. Reception of the first ACK signal is delayed a first delay period from an end of the transmission of the first packet. Reception of the second ACK signal is delayed a second delay period from an end of the transmission of the dummy data. The coding module, prior to the transmission of the second packet and based on time to process the first and second packets at a second wireless device, determines the amount of dummy data to add to the second packet such that the first delay period is a same length as the second delay period.
    Type: Grant
    Filed: September 20, 2013
    Date of Patent: January 5, 2016
    Assignee: Marvell International Ltd.
    Inventors: Weishi Feng, Peter Loc
  • Patent number: 9184822
    Abstract: An apparatus and methods are provided to realize an input waveform using wavelet processing and reconstruction via separated antenna array systems having different beam paths and different frequency components which can include phased array transmitters to recreate the input waveform in medical applications. One aspect of the invention can include a wavelet function used for the examples shown herein which includes a first and second moments of a statistical function, i.e. the mean and variance used with an inverse wavelet to create rectangular pulses that lend themselves to use in the invention herein. Other embodiments of the invention can use other input waveform separation functions paired with signal separation and recombination at a focus point. A selected function can be matched to its application associated with avoidance of sending the input waveform along a single beam path, a desired a focus point, and separation of an input signal.
    Type: Grant
    Filed: September 30, 2014
    Date of Patent: November 10, 2015
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventor: George Whitaker
  • Patent number: 9165615
    Abstract: Encoder and decoder circuits that encode and decode a series of data words to/from a series of code words. The data words include L symbols. The code words include M symbols, where M is larger than L. A set of tightly coupled M links to convey respective symbols in each of the series of code words. The code words are selected such that between every two consecutive code words in a series of code words, an equal number of transitions from low to high and high to low occur on a subset of the M-links.
    Type: Grant
    Filed: March 14, 2011
    Date of Patent: October 20, 2015
    Assignee: Rambus Inc.
    Inventors: Amir Amirkhany, Aliazam Abbasfar, Kambiz Kaviani, Wendemagegnehu Beyene, Carl Werner
  • Patent number: 9155104
    Abstract: Methods and wireless communication devices for access procedure enhancement are provided. The wireless communication device for access procedure enhancement includes a transceiver module and a communication protocol module. The transceiver module performs wireless transmissions and receptions. The communication protocol module receives a page message from a base station via the transceiver module, transmits at least one access probe via the transceiver module, and terminates the transmission of the rest of an access probe payload of the at least one access probe according to a termination criterion. Moreover, the access probe is transmitted using a transmission power which is lower than a first threshold, and the access probe is transmitted at a data rate lower than a second threshold.
    Type: Grant
    Filed: March 15, 2013
    Date of Patent: October 6, 2015
    Assignee: VIA Telecom Co., Ltd.
    Inventors: Shu Wang, Hong-Kui Yang
  • Patent number: 9146301
    Abstract: Systems and methods for determining the location of a microphone by using sounds played from loudspeakers at known locations. Systems and methods may thereby require a minimal level of infrastructure, using sounds that would naturally be played in the environment. Systems and methods may thereby allow devices such as smart-phones, tablets, laptops or portable microphones to determine their location in indoor settings, where Global Positioning Satellite (GPS) systems may not work reliably.
    Type: Grant
    Filed: January 25, 2012
    Date of Patent: September 29, 2015
    Assignee: FUJI XEROX CO., LTD.
    Inventors: John Adcock, Donald Kimber, Ish Rishabh
  • Patent number: 9148875
    Abstract: A method of exchanging data in a communications network is provided. A control channel channelization code is assigned for transmitting user specific data channel allocation information to a particular mobile station (MS). The data channel allocation information indicates which part of the transmission time interval (TTI) available for data can be used by that particular MS. The control channel channelization code is shared in a TDMA fashion between the MSs during the TTI in a proportion equal to that in which the data channel channelization code is shared between the MSs such that each MS is allocated a share of the control channel channelization code in that part of the TTI. The control channel channelization code is then transmitted in a part of the TTI corresponding to that in which the data channel channelization code is transmitted for a particular MS.
    Type: Grant
    Filed: November 21, 2011
    Date of Patent: September 29, 2015
    Assignee: Nokia Solutions and Networks Oy
    Inventors: Harri Kalevi Holma, Antti Anton Toskala
  • Patent number: 9124462
    Abstract: An apparatus is provided. The apparatus comprises a polynomial register having a plurality of bits, a first bus, a second bus, and a transceiver that is coupled to the first bus, the second bus, and the polynomial register. The polynomial register is configured to store a user-defined polynomial, and the transceiver includes a pseudorandom bit sequence (PRBS) generator is configured to generate a scrambled signal from the user-defined polynomial and a PRBS checker that is configured to generate a descrambled signal from a second signal using the user-defined polynomial.
    Type: Grant
    Filed: October 25, 2012
    Date of Patent: September 1, 2015
    Assignee: TEXAS INSTRUMENTS INCORPORATED
    Inventors: Seuk B. Kim, Tpinn R. Koh
  • Patent number: 9112629
    Abstract: Configuring a node (410) of a synchronization network involves identifying (10) possible alternative time synchronization trails arranged to carry time synchronization information for time synchronization at the node, and possible alternative frequency trails, arranged to carry frequency synchronization information for frequency synchronization at the node. Using information about the sources (20), a comparison of the trails (30) is biased to increase a likelihood of choosing time synchronization and frequency trails which share the same source, over a likelihood of choosing trails with different sources. This can help avoid divergence and consequent bit errors arising from phase errors, resulting from trails having different sources. It can encompass for example changing both to a new common source, or changing one or both trails while still using the old common source.
    Type: Grant
    Filed: January 18, 2010
    Date of Patent: August 18, 2015
    Assignee: Telefonaktiebolaget L M Ericsson (publ)
    Inventors: Stefano Ruffini, Raoul Fiorone, Sergio Lanzone, Orazio Toscano
  • Patent number: 9084232
    Abstract: A method of operating a wireless device includes selecting a CID with a first node and receiving a signal including an LID on a resource. At least one of the signal or the resource is based on the selected CID. The method further includes determining a presence of a second node using the selected CID based on the LID in the received signal. Another method of operating a wireless device includes selecting a CID with a first node and sending a signal including an LID on a resource. At least one of the signal or the resource is based on the selected CID.
    Type: Grant
    Filed: December 10, 2010
    Date of Patent: July 14, 2015
    Assignee: QUALCOMM Incorporated
    Inventors: Ying Wang, Sundar Subramanian, Junyi Li
  • Patent number: 9042350
    Abstract: A channel receiver operable to implement fractional dedicated physical channel (F-DPCH) for high-speed data packet access is provided. A received RF signal is processed to produce a set of soft symbol outputs. The receiver detects whether transmit power control (TPC) command bits are present in the set of soft symbol outputs. The TPC command bits are conveyed with the RF signal over non-dedicated pilot bits in the processed baseband signal. When TPC command bits are detected, the set of soft symbol outputs are processed to produce estimated TPC command bits. A TPC quality estimate is generated based on the estimated TPC command bits. A signal-to-interference ratio for the WCDMA dedicated physical channel is adjusted based upon a comparison of the TPC quality estimate with a TPC quality target to effect F-DPCH power control.
    Type: Grant
    Filed: April 30, 2013
    Date of Patent: May 26, 2015
    Assignee: Broadcom Corporation
    Inventors: Zoran Kostic, Severine E. Catreux-Erceg, Li Fung Chang, Wei Luo, Hongwei Kong
  • Patent number: 9036663
    Abstract: Aspects of the invention are directed to a transmit diversity method for use in a wireless terminal having a plurality of antennas and a wireless terminal configured to implement the method. The transmit diversity method includes using a different orthogonal sequence for each antenna, or group of antennas, for transmitting an uplink control channel from a wireless terminal to a base station. A first step of the method involves assigning at least one orthogonal sequence to one or more of the plurality of antennas, each of the plurality of antennas being assigned at least one orthogonal sequence. Once the orthogonal sequence is assigned, a further step involves scrambling a signal to be transmitted on the physical uplink control channel (PUCCH) using the at least one orthogonal sequence for each antenna thereby producing a scrambled PUCCH for transmission by each antenna. The scrambled PUCCH can then be transmitted on the plurality of antennas.
    Type: Grant
    Filed: September 18, 2009
    Date of Patent: May 19, 2015
    Assignee: RPX Clearinghouse LLC
    Inventors: Mohammadhadi Baligh, Masoud Ebrahimi Tazeh Mahalleh, Jianglei Ma, Hua Xu, Ming Jia, Amir Khandani
  • Patent number: 9025570
    Abstract: A method and user equipment for selecting a transport format combination (TFC) is disclosed. Configuration of a plurality of TFCs to use for TFC selection is received, wherein the TFCs of the plurality of TFCs have an order. TFCs to block from TFC selection from the plurality of TFCs is determined, wherein the TFCs to block are based at least on a maximum allowed transmit power. A TFC for transmission of uplink data is selected, wherein the selected TFC is based on the TFC order and wherein the selected TFC is a TFC that is not blocked from TFC selection.
    Type: Grant
    Filed: March 20, 2014
    Date of Patent: May 5, 2015
    Assignee: Rakuten, Inc.
    Inventors: Stephen E. Terry, Robert A. DiFazio, Stephen G. Dick, Joseph S. Levy
  • Patent number: 9025571
    Abstract: A system that incorporates teachings of the subject disclosure may include, for example, a method for scanning wireless signals in a wide frequency band, measuring power levels in narrow frequency bands from the wireless signals, determining a threshold according to an average wideband power level or at least a portion of the power levels in the narrow frequency bands, detecting from the wireless signals a narrow band interferer based on the threshold, and initiating a strategy for responding to interference in the wide frequency band caused by the detected narrow band interferer. Other embodiments are disclosed.
    Type: Grant
    Filed: April 29, 2014
    Date of Patent: May 5, 2015
    Assignee: ISCO International, LLC
    Inventors: Charles E. Jagger, Mark N. Willetts, Micolino Tobia
  • Patent number: 9025568
    Abstract: A downlink orthogonal variable spreading factor (OVSF) code assignment method is provided. It is determined whether a spreading factor required by a service request is greater than a remaining capacity of assignable spreading factors of a code tree. If not, the code tree is searched from a root until a node of a layer corresponding to the required spreading factor is reached and thus defined as a first node. During the searching, when a searched node is unassigned, the searching continues leftward in a lower layer; and when the searched node is in an assigned state, the searching continues rightward in a same layer of the searched node. It is determined, from the first node, whether any assignable code is available in the layer corresponding to the required spreading factor. If available, an assignable code is assigned to a communication service corresponding to the service request.
    Type: Grant
    Filed: November 13, 2012
    Date of Patent: May 5, 2015
    Assignee: Sernet (Suzhou) Technologies Corporation
    Inventors: Ling Zhu, Ning Tao
  • Patent number: 9019940
    Abstract: A method for using a wireless digital base station to receive, process and transmit a plurality of communications having independent data rates establishing a first communication channel having a first data communication rate to support a first communication; determining the data rate required to support the first communication; selecting one or more transmission channels, from a plurality of available transmission channels, required to support said required data rate; and transmitting the first communication using one or more selected transmission channels. The plurality of available transmission channels includes at least one B or D channel.
    Type: Grant
    Filed: November 22, 2013
    Date of Patent: April 28, 2015
    Assignee: InterDigital Technology Corporation
    Inventor: Faith M. Ozluturk
  • Patent number: 9008110
    Abstract: A reference signal multiplexing method for multiple mobile stations includes: grouping together control signals for the multiple mobile stations; and multiplexing reference signals corresponding to the control signals by CDM over the same bandwidth as that of grouped control signals.
    Type: Grant
    Filed: July 6, 2012
    Date of Patent: April 14, 2015
    Assignee: NEC Corporation
    Inventors: Takamichi Inoue, Yoshikazu Kakura
  • Patent number: 9001916
    Abstract: A method of transmitting secret information in a transmitting end and a method of receiving secret information at a receiving end, based on multi-input multi-output (MIMO) multiplexing using antennas, are provided. The method of transmitting includes selecting one or more indices of the secret information that correspond to at least one receiving antenna among receiving antennas, and mapping the one or more indices to an information vector. The method of transmitting further includes precoding the information vector based on channel information between transmitting antennas and the receiving antennas, and beamforming the precoded information vector, using the transmitting antennas.
    Type: Grant
    Filed: May 14, 2013
    Date of Patent: April 7, 2015
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Jong Bu Lim, Kyung Hun Jang, Mi Suk Huh
  • Patent number: 8995924
    Abstract: A method for configuring gain factors in a WCDMA telecommunication system is provided in which the gain factor for defining power required for normal reception of uplink data in an environment supporting an uplink service over an E-DCH can be configured using minimal signaling information. First gain factors for first TFs corresponding to a part of a TF set including a plurality of TFs available for an uplink service are received. One of the first TFs is determined as a reference TF for a second TF other than the first TFs in the TF set. Then, a second gain factor for the second TF is calculated using the first gain factor for the determined reference TF. The second gain factor is used for transmitting or receiving uplink data.
    Type: Grant
    Filed: March 4, 2013
    Date of Patent: March 31, 2015
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Youn-Hyoung Heo, Ju-Ho Lee, Yujian Zhang, Joo-Young Cho, Young-Bum Kim, Yong-Jun Kwak
  • Patent number: 8995247
    Abstract: A first network device detects at least a first orthogonal code included in a preamble of a network packet received at the first network device from a second network device in an orthogonal frequency division multiplexing (OFDM) communication network. The first network device determines whether the first orthogonal code included in the preamble is associated with an assigned orthogonal code for the first network device. The assigned orthogonal code for the first network device is orthogonal to other assigned orthogonal codes for other network devices in the OFDM communication network. An operational mode of the first network device is changed from a sleep mode to an awake mode in response to determining the first orthogonal code is associated with the assigned orthogonal code for the first network device.
    Type: Grant
    Filed: January 7, 2013
    Date of Patent: March 31, 2015
    Assignee: QUALCOMM Incorporated
    Inventors: John Fraser Chappel, Ehab Tahir, Richard David Roze, Brian James Langlais, Joubin Karimi
  • Patent number: 8976806
    Abstract: Methods and apparatus are described for providing compatible mapping for backhaul control channels, frequency first mapping of control channel elements (CCEs) to avoid relay-physical control format indicator channel (R-PCFICH) and a tree based relay resource allocation to minimize the resource allocation map bits. Methods and apparatus (e.g., relay node (RN)/evolved Node-B (eNB)) for mapping of the Un downlink (DL) control signals, Un DL positive acknowledgement (ACK)/negative acknowledgement (NACK) and/or relay-physical downlink control channel (R-PDCCH) (or similar) in the eNB to RN (Un interface) DL direction are described. This includes time/frequency mapping of above-mentioned control signals into resource blocks (RBs) of multimedia broadcast multicast services (MBMS) single frequency network (MBSFN)-reserved sub-frames in the RN cell and encoding procedures for these.
    Type: Grant
    Filed: August 12, 2010
    Date of Patent: March 10, 2015
    Assignee: Interdigital Technology Corporation
    Inventors: Kalpendu R. Pasad, Sung-Hyuk H. Shin, Mihaela C. Beluri, Marian Rudolf, Pascal M. Adjakple, John W. Haim
  • Patent number: 8971169
    Abstract: A method and apparatus are provided for reducing the number of pilot symbols within a MIMO-OFDM communication system, and for improving channel estimation within such a system. For each transmitting antenna in an OFDM transmitter, pilot symbols are encoded so as to be unique to the transmitting antenna. The encoded pilot symbols are then inserted into an OFDM frame to form a diamond lattice, the diamond lattices for the different transmitting antennae using the same frequencies but being offset from each other by a single symbol in the time domain. At the OFDM receiver, a channel response is estimated for a symbol central to each diamond of the diamond lattice using a two-dimensional interpolation. The estimated channel responses are smoothed in the frequency domain. The channel responses of remaining symbols are then estimated by interpolation in the frequency domain.
    Type: Grant
    Filed: April 9, 2014
    Date of Patent: March 3, 2015
    Assignee: BlackBerry Limited
    Inventors: Peiying Zhu, Wen Tong, Jianglei Ma, Ming Jia
  • Patent number: 8971303
    Abstract: A channel sounding method in a wireless local area network (WLAN) system is provided. The method, performed by a transmitter, includes transmitting a null data packet announcement (NDPA) frame to a receiver to initiate a channel sounding procedure; transmitting a null data packet (NDP) to the receiver and receiving a feedback frame. The feedback frame includes a plurality of segment frames and a channel feedback report. The channel feedback report is split into a plurality of feedback segments. Each of the plurality of feedback segments is respectively included in each of the plurality of segment frames. The each of the plurality of segment frames includes a first-segment subfield indicating whether the each of the plurality of feedback segment included is a first segment and a remaining-segment subfield indicating the number of remaining feedback segments.
    Type: Grant
    Filed: May 9, 2012
    Date of Patent: March 3, 2015
    Assignee: LG Electronics Inc.
    Inventors: Dae Won Lee, Ill Soo Sohn, Yong Ho Seok
  • Patent number: 8970418
    Abstract: The present disclosure discloses a digital-to-analog converter (DAC) design which is suitable for providing a high output power high-speed DAC, e.g., in radio frequency applications. The DAC design utilizes a parallel DAC structure, e.g., having 8 parallel DACs and an aggregate current output, to provide a high and programmable current output (in some implementations, up to 512 mA or more). The parallel DAC structure alleviates the design problems which exist in trying to output a high amount of current using a single DAC. The DAC design further utilizes a hybrid structure which integrates the signal chain for a more reliable system. In some embodiments, the hybrid structure uses a CMOS process for the current sources and switches and a GaAs cascode stage for combining the outputs to optimally leverage the advantages of both technologies. The result is a highly efficient DAC (with peak output power programmable up to 29 dBm or more).
    Type: Grant
    Filed: March 21, 2014
    Date of Patent: March 3, 2015
    Assignee: Analog Devices, Inc.
    Inventors: Bernd Schafferer, Bing Zhao
  • Patent number: 8964716
    Abstract: A method of transmitting an RF signal over a wireless communication network is provided. The method comprises determining a respective weighting factor for each of a plurality of digital signals each corresponding to a respective channel, the weighting factors weighting the digital signals to produce a composite signal intended for transmission as an RF signal via a power amplifier. The method further comprises executing instructions on a processor to dynamically calculate a metric related to the non-linearity of the power amplifier's transfer characteristics for the composite signal using the determined weighting factors. The method further comprises supplying to the power amplifier a signal for transmission as an RF signal and amplifying the signal for transmission at the power amplifier to transmit an RF signal over the wireless communication network via at least one antenna. The method further comprises controlling the transmission based on the metric related to the amplifier non-linearity.
    Type: Grant
    Filed: May 26, 2009
    Date of Patent: February 24, 2015
    Assignee: Icera Inc.
    Inventors: Phil Jones, Carlo Luschi, Abdelkader Medles, Donal Price
  • Patent number: 8964638
    Abstract: Provided is a wireless communication device including a receiving unit that receives, from one or more than one first wireless communication devices, information indicating an order of each of the one or more than one first wireless communication devices in a queue for data communication with a second wireless communication device, an order management unit that manages an order of its own device in the queue based on the information received by the receiving unit from the one or more than one first wireless communication devices, and a transmitting unit that transmits information indicating the order of its own device in the queue managed by the order management unit.
    Type: Grant
    Filed: February 1, 2011
    Date of Patent: February 24, 2015
    Assignee: Sony Corporation
    Inventors: Natsuki Itaya, Masahiko Naito, Erika Saito, Tomoya Yamaura, Hideyuki Suzuki, Katsutoshi Itoh
  • Patent number: 8964523
    Abstract: A method and apparatus are provided for reducing the number of pilot symbols within a MIMO-OFDM communication system, and for improving channel estimation within such a system. For each transmitting antenna in an OFDM transmitter, pilot symbols are encoded so as to be unique to the transmitting antenna. The encoded pilot symbols are then inserted into an OFDM frame to form a diamond lattice, the diamond lattices for the different transmitting antennae using the same frequencies but being offset from each other by a single symbol in the time domain. At the OFDM receiver, a channel response is estimated for a symbol central to each diamond of the diamond lattice using a two-dimensional interpolation. The estimated channel responses are smoothed in the frequency domain. The channel responses of remaining symbols are then estimated by interpolation in the frequency domain.
    Type: Grant
    Filed: February 12, 2013
    Date of Patent: February 24, 2015
    Assignee: BlackBerry Limited
    Inventors: Peiying Zhu, Wen Tong, Jianglei Ma, Ming Jia
  • Patent number: 8958397
    Abstract: One out of sixteen preamble signatures is selected. A code is produced based on the selected preamble signature. The produced code is phase rotated to produce a processed preamble signature signal. The processed preamble signature signal is used in processing the CDMA RACH signal and the CDMA RACH signal is used to access a CDMA system.
    Type: Grant
    Filed: July 9, 2012
    Date of Patent: February 17, 2015
    Assignee: InterDigital Technology Corporation
    Inventors: Stephen G. Dick, Charles A. Dennean, Eldad M. Zeira, Kyle Jung-Lin Pan, Sung-Hyuk Shin, Ariela Zeira
  • Patent number: 8958330
    Abstract: The present invention discloses a de-rate matching method and device for a downlink traffic channel in a Long Term Evolution (LTE). The method comprises: at a terminal side, dividing a received Transport Block (TB) of a downlink traffic channel, i.e., Physical Downlink Shared Channel (PDSCH), into a plurality of different code blocks; for the first code block, de-rate matching of data is implemented by a segmented copy method; and for the other code blocks, de-rate matching is implemented by a table lookup method. By applying the method and device provided in the embodiments of the present invention, the execution speed of the de-rate matching can be improved, and the overall processing speed of the downlink traffic channel can be improved.
    Type: Grant
    Filed: May 5, 2011
    Date of Patent: February 17, 2015
    Assignee: ZTE Corporation
    Inventor: Xiaojing Ling
  • Patent number: 8948136
    Abstract: A method of allocating resources in a communication system and a station for the communication system is disclosed. The communication system is such that a plurality of user equipment can communicate data on a dedicated channel. In the method a request for communication resources may be sent from a user equipment to the station on a first protocol layer. Priority information is obtained at the station from a data flow on a second protocol layer. Communication resources may then at least partially be allocated based on said priority information.
    Type: Grant
    Filed: September 23, 2005
    Date of Patent: February 3, 2015
    Assignee: Nokia Corporation
    Inventors: Svetlana Chemiakina, Preben Mogensen, Esa Malkamäki
  • Patent number: 8948141
    Abstract: A system that incorporates teachings of the subject disclosure may include, for example, a method for receiving a mitigation strategy for reducing interference caused by at least one narrow band interferer detected in a wide frequency band according to an average wideband power level, an adaptive threshold, or both, creating a message according to the mitigation strategy to transmit to at least one communication device transmitting wireless signals that are associated with the at least one narrow band interferer, and transmitting the mitigation message to the at least one communication device to cause the at least one communication device to adjust operations of a wireless transmitter of the at least one communication device. Other embodiments are disclosed.
    Type: Grant
    Filed: May 19, 2014
    Date of Patent: February 3, 2015
    Assignee: ISCO International, LLC
    Inventors: Charles E. Jagger, Mark N. Willetts, Micolino Tobia
  • Patent number: 8934441
    Abstract: Systems and techniques for communications include forming a data packet, selecting a plurality of transmission parameters for the data packet, generating information having one of a plurality of codes identifying the transmission parameters, and transmitting the data packet on a first channel and the information on a second channel. It is emphasized that this abstract is provided to comply with the rules requiring an abstract which will allow a searcher or other reader to quickly ascertain the subject matter of the technical disclosure. It is submitted with the understanding that it will not be used to interpret or limit the scope or the meaning of the claims.
    Type: Grant
    Filed: September 30, 2013
    Date of Patent: January 13, 2015
    Assignee: QUALCOMM Incorporated
    Inventors: Joseph P. Odenwalder, Yongbin Wei, Edward G. Tiedemann, Jr., Stein A. Lundby, David Puig-Oses, Sandip Sarkar