Frequency Or Phase Modulation Patents (Class 455/23)
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Patent number: 10993210Abstract: A method of transmitting data packets over a plurality of dynamically allocated resource blocks in at least one or a combination of a time, code or frequency domain on a shared channel of a wireless communication system, comprising the steps of selecting a number of resource block candidates for potential transmission of data packets destined for a receiver and transmitting the data packet to the receiver using at least one allocated resource block from the selected resource block candidates. The invention also relates to a corresponding method of decoding data packets, a transmitter, receiver and communication system.Type: GrantFiled: April 29, 2019Date of Patent: April 27, 2021Assignee: Sun Patent TrustInventors: Christian Wengerter, Joachim Loehr
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Patent number: 10763233Abstract: An apparatus and method for reducing the volume of a resource allocation information message in a broadband wireless communication system are provided. The method includes transmitting a message including information indicating a periodicity of an uplink control channel for an initial network entry; and receiving an uplink signal for the initial network entry through the uplink control channel.Type: GrantFiled: February 22, 2019Date of Patent: September 1, 2020Assignee: Samsung Electronics Co., LtdInventors: Hee-Kwun Cho, In-Seok Hwang, June Moon, Chung-Ryul Chang, Jae-Ho Jeon, Soon-Young Yoon
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Patent number: 10638465Abstract: In coverage enhancement of machine type communication (MTC), a downlink transmitted bit stream is jointly encoded with uplink payload by the terminal. The combined signal is sent on uplink, to be jointly decoded by the base station that knows the downlink payload and the joint encoding mechanism at the mobile terminal.Type: GrantFiled: April 8, 2016Date of Patent: April 28, 2020Assignee: ZTE (USA) Inc.Inventor: Yifei Yuan
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Patent number: 10321438Abstract: A method of transmitting data packets over a plurality of dynamically allocated resource blocks in at least one or a combination of a time, code or frequency domain on a shared channel of a wireless communication system, comprising the steps of selecting a number of resource block candidates for potential transmission of data packets destined for a receiver and transmitting the data packet to the receiver using at least one allocated resource block from the selected resource block candidates. The invention also relates to a corresponding method of decoding data packets, a transmitter, receiver and communication system.Type: GrantFiled: April 10, 2017Date of Patent: June 11, 2019Assignee: Sun Patent TrustInventors: Christian Wengerter, Joachim Loehr
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Patent number: 9991912Abstract: A transmitting device has a transmission data generating part and an output buffer part. The transmission data generating part transmits a data and a clock, which are to be transmitted to a receiving device, and outputs them to the output buffer part. The output buffer part includes a data transmitting part and a clock transmitting part. The clock transmitting part generates and transmits a clock intermittently phase-shifted. The data transmitting part transmits the data in sync with the clock transmitted from the clock transmitting part.Type: GrantFiled: June 2, 2011Date of Patent: June 5, 2018Assignee: THINE ELECTRONICS, INC.Inventor: Hironobu Akita
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Patent number: 9756462Abstract: Systems and methods for device state derivation are described. Some implementations include receiving, from a mobile station at a state derivation server, current connectivity characteristics of one or more radio access technologies (RATs) that are serviced by a modem of the mobile station, analyzing the one or more connectivity characteristics to determine one or more of: whether the mobile station is tuning away from a particular RAT to access another RAT or a duration for which the mobile station is tuning away from the particular RAT to access the other RAT, based on the analyzing, determining a current connectivity state of the mobile station, and displaying the current connectivity state at a user interface of a computing device associated with the state derivation server.Type: GrantFiled: September 9, 2014Date of Patent: September 5, 2017Assignee: Verizon Patent and Licensing Inc.Inventors: Siva Sandeep Dhandu, Andrew E. Youtz, Lily Zhu
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Patent number: 9735810Abstract: A transmitting device has a transmission data generating part and an output buffer part. The transmission data generating part transmits a data and a clock, which are to be transmitted to a receiving device, and outputs them to the output buffer part. The output buffer part includes a data transmitting part and a clock transmitting part. The clock transmitting part generates and transmits a clock intermittently phase-shifted. The data transmitting part transmits the data in sync with the clock transmitted from the clock transmitting part.Type: GrantFiled: June 2, 2011Date of Patent: August 15, 2017Assignee: THINE ELECTRONICS, INC.Inventor: Hironobu Akita
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Patent number: 9655085Abstract: A method of transmitting data packets over a plurality of dynamically allocated resource blocks in at least one or a combination of a time, code or frequency domain on a shared channel of a wireless communication system, comprising the steps of selecting a number of resource block candidates for potential transmission of data packets destined for a receiver and transmitting the data packet to the receiver using at least one allocated resource block from the selected resource block candidates. The invention also relates to a corresponding method of decoding data packets, a transmitter, receiver and communication system.Type: GrantFiled: May 25, 2016Date of Patent: May 16, 2017Assignee: Sun Patent TrustInventors: Christian Wengerter, Joachim Loehr
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Patent number: 9380573Abstract: A method of transmitting data packets over a plurality of dynamically allocated resource blocks in at least one or a combination of a time, code or frequency domain on a shared channel of a wireless communication system, comprising the steps of selecting a number of resource block candidates for potential transmission of data packets destined for a receiver and transmitting the data packet to the receiver using at least one allocated resource block from the selected resource block candidates. The invention also relates to a corresponding method of decoding data packets, a transmitter, receiver and communication system.Type: GrantFiled: June 24, 2015Date of Patent: June 28, 2016Assignee: Sun Patent TrustInventors: Christian Wengerter, Joachim Loehr
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Patent number: 9331826Abstract: The embodiments of the present invention relate to a method for transmitting control information by a base station in a wireless communication system, wherein the method comprises a step of transmitting a physical downlink control channel (PDCCH). The downlink control information of the PDCCH may include an indicator indicating whether or not a reference signal is transmitted in a time domain corresponding to the subframe in which the PDCCH is transmitted.Type: GrantFiled: April 13, 2012Date of Patent: May 3, 2016Assignee: LG Electronics Inc.Inventors: Hyungtae Kim, Hanbyul Seo, Hakseong Kim
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Patent number: 9246728Abstract: A system and method for frequency diversity uses interleaving in a wireless communication system utilizing orthogonal frequency division multiplexing (OFDM) with various FFT sizes. Subcarriers of one or more interlaces are interleaved in a bit reversal fashion and the one or more interlaces are interleaved in the bit reversal fashion.Type: GrantFiled: February 14, 2013Date of Patent: January 26, 2016Assignee: QUALCOMM IncorporatedInventors: Michael Mao Wang, Murali Ramaswamy Chari, Ashok Mantravadi, Fuyun Ling, Rajiv Vijayan, Raghuraman Krishnamoorthi
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Patent number: 9088980Abstract: An apparatus and method for reducing the volume of a resource allocation information message in a broadband wireless communication system are provided, in which a scheduler determines whether to generate uplink control region allocation information, and a generator generates the uplink control region allocation information according to a result of the determination.Type: GrantFiled: July 9, 2007Date of Patent: July 21, 2015Assignee: Samsung Electronics Co., LtdInventors: Hee-Kwun Cho, In-Seok Hwang, June Moon, Chung-Ryul Chang, Jae-Ho Jeon, Soon-Young Yoon
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Publication number: 20150147960Abstract: Certain aspects and embodiments are directed to a Doppler shift correction sub-system that can be disposed in a mobile repeater. The Doppler shift correction sub-system can include a processor and a frequency-shifting module. The processor can be configured to determine a corrective frequency shift based on a velocity of the repeater relative to a source and a representative transmission frequency. The processor can provide the corrective frequency shift to a frequency-shifting module. The frequency-shifting module can be configured to shift the signal using the corrective frequency shift prior to transmitting the signal to a destination, such as a mobile device.Type: ApplicationFiled: May 7, 2012Publication date: May 28, 2015Applicant: Andrew Wireless Systems GMBHInventors: Van E. Hanson, Alfons Dussmann
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Patent number: 9013541Abstract: Disclosed herein are systems, methods, and non-transitory computer-readable storage media for broadcasting a local signal B that corresponds to a coverage hole in a remote signal B. The system includes a first transmitter at a first location and a second transmitter at the first location that transmits local signal B corresponding to remote signal B transmitted from a remote transmitter. The second transmitter broadcasts the local signal B to at least part of a coverage hole in a coverage area of remote signal B. Also disclosed is a method for consolidating allocated wireless spectrum. The method includes identifying a guard band in an allocated band of wireless spectrum, reassigning an existing channel occupying a portion of the allocated band of wireless spectrum to the guard band via selective single frequency network infill to yield a reassigned channel, and freeing the portion of the allocated band of wireless spectrum.Type: GrantFiled: December 17, 2010Date of Patent: April 21, 2015Assignee: AT&T Mobility II, LLCInventor: Melvin Frerking
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Publication number: 20150099459Abstract: An antenna relay system for facilitating wireless communication between mobile terminals on a high-speed rail vehicle and stationary base stations with substantially reduced Doppler shift effects comprises matched traveling wave directional antennas mounted to a high-speed rail vehicle and positioned collinearly alongside the railway. Both antennas continually transmit and receive at a fixed angle relative to the motion of the train so as to circumvent the Doppler shift. The signal transmitted or received by the stationary antenna is conducted to a nearest node for communication with an access network.Type: ApplicationFiled: December 16, 2014Publication date: April 9, 2015Inventor: Gary L. Duerksen
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Patent number: 8995905Abstract: A wireless network relay apparatus includes a Layer 2 switch and a line control device as well as wireless/wired line terminating devices performing band limitation associated with an AMR function. It measures traffic passing through each line terminating device in inflow/outflow path directions. Upon detecting a modulation scheme changed due to an AMR function in a wireless area, it may specify a line terminating device so as to read a desired modulation scheme from a transmission source modulation scheme conversion table of the line control device based on traffic. It may change a local modulation scheme with a desired modulation scheme when a difference therebetween is above a predetermined number of stages. By tracking a modulation scheme changed for a transmission destination, it is possible to appropriately change a modulation scheme for a transmission source, thus suppressing traffic without discarding necessary data.Type: GrantFiled: May 16, 2011Date of Patent: March 31, 2015Assignee: NEC CorporationInventors: Satoshi Sonobe, Hiroaki Nakajima, Yoshitaka Nakao, Kentarou Kudou, Hideyuki Muto
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Patent number: 8976901Abstract: A phase shift keying transmitter circuit that includes: a variable frequency conversion stage adapted to receive a first data signal, wherein the variable frequency conversion stage comprises a plurality of frequency modulating elements, wherein the first data signal controls the number of the plurality of frequency modulating elements that are operated so as to control an operating frequency of the variable frequency conversion stage; and an output stage configured to switch between one of two possible outputs, the signals provided by one of the two possible outputs having an opposite polarity to the other, wherein the output stage is configured to receive a second data signal to control the switching between the two possible outputs, wherein the output stage is coupled to the variable frequency conversion stage and wherein the switching between the two possible outputs changes the phase of a signal from the variable frequency conversion stage by 180°.Type: GrantFiled: May 25, 2011Date of Patent: March 10, 2015Assignee: Agency for Science, Technology and ResearchInventors: Shengxi Diao, Yuan Gao, Yuanjin Zheng
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Patent number: 8973060Abstract: There is provided a method where a terminal amplifies an MBS signal that the terminal receives using a terminal in an MBS service, transmits the amplified signal to another terminal and controls it in order to overcome the fact it is not possible to provide high quality contents over a broad area due to interference signals between MBS zones, a terminal is used as a repeater at MBS transmission time only, and an output of a repeating signal of the terminal is controlled so that an excessive interference signal for another MBS area is not generated when the terminal operates as a repeater.Type: GrantFiled: November 4, 2011Date of Patent: March 3, 2015Assignee: Electronics and Telecommunications Research InstituteInventor: Young-Il Kim
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Patent number: 8965290Abstract: Methods and systems for transmitting a spectrally efficient signal. The method includes frequency modulating an input signal in a transmitter to generate a first frequency modulated (FM) signal and generating in the transmitter an amplitude modulated (AM) component based at least on the input signal. The method may then include generating a second FM signal based at least on the AM component and the first FM signal and sending the second FM signal to a receiver.Type: GrantFiled: March 29, 2012Date of Patent: February 24, 2015Assignee: General Electric CompanyInventor: Richard Alan Place
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Patent number: 8958350Abstract: Messages transmitted between a receiver and a transmitter are used to maximize a communication data rate. In particular, a multicarrier modulation system uses messages that are sent from the receiver to the transmitter to exchange one or more sets of optimized communication parameters. The transmitter then stores these communication parameters and when transmitting to that particular receiver, the transmitter utilizes the stored parameters in an effort to maximize the data rate to that receiver. Likewise, when the receiver receives packets from that particular transmitter, the receiver can utilize the stored communication parameters for reception.Type: GrantFiled: September 10, 2012Date of Patent: February 17, 2015Assignee: Intel CorporationInventors: Marcos C. Tzannes, Dongjun Lee, Todor Cooklev, Colin Lanzl
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Patent number: 8948154Abstract: Techniques for supporting data transmission based on a low-complexity transmission scheme are described. In one design, a first user equipment (UE) generates a first transmission for a single subcarrier assigned to the first UE. The first UE sends the first transmission on the single subcarrier concurrently with a SC-FDMA transmission sent on multiple subcarriers by a second UE. In one design, the first UE generates a continuous sinusoidal signal at a frequency corresponding to the single subcarrier. The first UE modulates the continuous sinusoidal signal with data symbols and reference symbols. In one design, the first transmission includes a cyclic prefix followed by a useful portion in each symbol period and has phase discontinuity at symbol boundary. A base station processes a received signal to recover the first transmission sent by the first UE and the SC-FDMA transmission sent by the second UE.Type: GrantFiled: February 7, 2011Date of Patent: February 3, 2015Assignee: QUALCOMM IncorporatedInventors: Peter Gaal, Ravi Palanki
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Patent number: 8942621Abstract: There is provided a circuit for adjusting phases of IQ local signals. As to a local signal A and a local signal B generated by a local signal generating unit for the purpose of generating IQ quadrature local signals, the local signal B in which the gain is adjusted is added to the output of the local signal A to obtain the local signal A2, and the local signal A in which the gain is adjusted is subtracted from the output of the local signal B to obtain the local signal B2. Even if the phase relationship between the local signal A and the local signal B deviates from 90 degrees, the phase difference between the local signal A2 and the local signal B2 can be adjusted with ease by changing the adjustment amounts of variable amplifiers AMP1 and AMP2.Type: GrantFiled: March 28, 2011Date of Patent: January 27, 2015Assignee: Asahi Kasei Microdevices CorporationInventor: Takeji Fujibayashi
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Patent number: 8891480Abstract: Systems and methods are described to supply positioning reference signal (PRS) in a telecommunication system. A base station supplies a PRS sequence according at least to a time-frequency pattern of modulation symbols, wherein the time-frequency pattern assigns a modulation symbol to each frequency tone in a block of time-frequency resources allocated to transmit PRS. The base station associates a modulation symbol in the time-frequency pattern with a reference symbol in the PRS sequence through a mapping that represents the time-frequency pattern. The PRS sequence is conveyed to user equipment through delivery of a set of modulation symbols established through the mapping. Different time-frequency patterns can be exploited based on time-structure of a radio sub-frame. The user equipment receives the PRS sequence according to at least the time-frequency pattern of modulation symbols and utilizes at least the PRS sequence as part of a process to produce a location estimate.Type: GrantFiled: June 29, 2010Date of Patent: November 18, 2014Assignee: QUALCOMM IncorporatedInventors: Raja Sekhar Bachu, Ashwin Sampath, Aamod Dinkar Khandekar
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Patent number: 8849186Abstract: A method for providing repeater communication in a wireless repeater deployed in a multi-repeater environment includes inserting a message signal into the transmit signal of the repeater. The message signal may be a unique or quasi-unique low power spreading sequence uniquely identifying the repeater from other repeaters in the environment. The message signal may also contain information relating to the operational characteristics of the repeater. The message signal may be detected by another repeater or by an end-user wireless communication device.Type: GrantFiled: May 10, 2010Date of Patent: September 30, 2014Assignee: QUALCOMM IncorporatedInventors: Dhananjay Ashok Gore, Sanjiv Nanda, James Arthur Proctor, Jr., Richard Finch Dean, Gwendolyn Denise Barriac
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Patent number: 8838021Abstract: A two conductor hard wired communications link accepts an actual value of at least one parameter of interest from an environmental sensor in the form of data encoded on the conductors via current modulation. The sensor is mounted in a location remote from an irrigation controller. A circuit connected to the sensor transmits an RF signal representing an actual value of a parameter of interest detected by the sensor. A data relay is connected to the hard wired communication link of the irrigation controller. The data relay includes a receiver that receives the RF signal, and circuitry configured to extract the actual value of the parameter of interest and emulate a predetermined set of physical and protocol properties of the hard wired communication link of the irrigation controller.Type: GrantFiled: July 15, 2013Date of Patent: September 16, 2014Assignee: Hunter Industries, Inc.Inventor: Peter J. Woytowitz
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Patent number: 8804868Abstract: A constant-amplitude and continuous-phase modulation method for modulating digital data and for demodulating said modulated signal, said data taking the form of symbols a(n) that can take a number M of states at least equal to 2, the method including, in transmission, use of a voltage-controlled oscillator (VCO) for which the control is the sum of pulses he(a(n), t?n T), the form and the amplitude of which depends on the value of a(n); and, in reception, use of a single impulse response filter C0(t) regardless of the value of M in transmission, said functions he and C0 having a number of parameters that are optimized in the design of the system in order to obtain at the output of the filter C0 a constellation that is as close as possible to the theoretical constellation.Type: GrantFiled: November 18, 2010Date of Patent: August 12, 2014Assignee: ThalesInventor: Pierre-André Laurent
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Patent number: 8750789Abstract: A dynamic frequency translating repeater operating in a mobile communications system is operable to receive a multi-user signal and perform time-varying and user-specific frequency shifting in the repeater signal. The dynamic frequency translating repeater may further perform user subcarrier specific dynamic frequency translation. Different mobile stations may be allocated different frequency shift amounts based on the interference environments, resource allocations, and scheduling constraints particular to each mobile station.Type: GrantFiled: January 19, 2009Date of Patent: June 10, 2014Assignee: Telefonaktiebolaget L M Ericsson (Publ)Inventors: Robert Baldemair, Päl Frenger, Niklas Johansson, Peter Larsson
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Patent number: 8699473Abstract: A wireless local area network is provided with at least one cell controller and simplified RF ports which are configured to provide lower level media access control functions. Higher level media access control functions are provided in a cell controller, which may service one or more RF ports that are capable operating with at least two wireless local area subnetworks. Mobile units can also be configured with the higher level media access control functions being performed in a host processor.Type: GrantFiled: January 11, 2007Date of Patent: April 15, 2014Assignee: Symbol Technologies, Inc.Inventor: Robert Beach
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Patent number: 8699474Abstract: A wireless local area network is provided with simplified RF ports which are configured to provide lower level media access control functions. Higher level media access control functions and management functions are provided with a system having a cell controller, which may service one or more RF ports. Mobile units can also be configured with the higher level media access control functions being performed in a host processor.Type: GrantFiled: January 11, 2007Date of Patent: April 15, 2014Assignee: Symbol Technologies, Inc.Inventor: Robert Beach
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Apparatus for dimensioning the control channel for transmission efficiency in communications systems
Patent number: 8660081Abstract: Embodiments of the invention provide methods for optimizing the spectral efficiency of control channel transmissions carrying scheduling assignments from a serving Node B to user equipments. This is accomplished by adjusting the control channel size between successive transmission time intervals according to the number of user equipments having scheduling assignments and possibly according to the modulation and coding scheme used for the transmission of each scheduling assignments.Type: GrantFiled: July 3, 2012Date of Patent: February 25, 2014Assignee: Texas Instruments IncorporatedInventor: Aris Papasakellariou -
Patent number: 8655396Abstract: A method for a wireless communication includes receiving or storing a peak to average (PAR) back off value; and applying the PAR back off value to determine the transmission power and rate for SIMO and MIMO transmissions. In one aspect, the PAR back off value is at least partially based on modulation type. In another aspect, the PAR back off value is more for higher order QAM than for QPSK. The power allocation algorithm for different UL MIMO schemes is described as follows. For MIMO without antenna permutation (e.g. per antenna rate control), different PAR back off values are considered for different data streams. For MIMO with antenna permutation or other unitary transformation such as virtual antenna mapping or precoding, the PAR back off are determined based on combined channel. The transmission data rate depends on power and also the receiver algorithms such as a MMSE receiver or MMSE-SIC receiver.Type: GrantFiled: November 6, 2007Date of Patent: February 18, 2014Assignee: QUALCOMM IncorporatedInventors: Durga Prasad Malladi, Hao Xu
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Patent number: 8649362Abstract: Embodiments of the invention provide methods for user equipments to implicitly determine the location of the transmission of uplink control signaling information, that is in response to downlink data packet transmissions, using information that is already available through the downlink control signaling for the respective downlink scheduling assignments. No additional explicit downlink control signaling is required for the transmission of the above uplink control signaling from each user equipment.Type: GrantFiled: October 31, 2006Date of Patent: February 11, 2014Assignee: Texas Instruments IncorporatedInventor: Aris Papasakellariou
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Patent number: 8630265Abstract: A method and apparatus for reconfiguring a wireless transmit/receive unit (WTRU) are directed to receiving an active set update message indicating that a mode of operation allowing a certain modulation scheme is enabled or disabled and performing at least one of: performing a MAC reset procedure, updating a set of reference enhanced transport format combination indicators (E-TFCIs) and associated power offsets, determining actions related to E-DPCCH boosting, modifying information related to an enhanced dedicated channel (E-DCH), and modifying an index that indicates an E-DCH transport block size table. The update message includes at least one modified information element (IE).Type: GrantFiled: April 18, 2012Date of Patent: January 14, 2014Assignee: Interdigital Patent Holdings, Inc.Inventors: Paul Marinier, Benoit Pelletier, Diana Pani
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Patent number: 8630211Abstract: A wireless repeater includes a receiver circuit implemented as an intermediate frequency (IF) subsampling receiver and a transmitter circuit implemented as a direct conversion (zero-IF) transmitter. The repeater further includes a reference receiver implemented as an IF subsampling receiver to sample a portion of the transmit signal prior to over-the-air transmission for use as the reference signal for channel estimation. Highly accurate channel estimation is obtained by using the reference signal from the reference receiver as the reference signal accounts for distortions in the transmitter circuit of the repeater. The repeater may include an echo canceller to cancel an estimated feedback amount from an input signal based on the channel estimation.Type: GrantFiled: June 30, 2010Date of Patent: January 14, 2014Assignee: QUALCOMM IncorporatedInventors: Kenneth M. Gainey, James Arthur Proctor, Jr., Dhananjay Ashok Gore
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Patent number: 8593932Abstract: A device includes a zero symbol rate (ZSR) coding/modulation module and a second type coding/modulation module. Both modules generate modulation symbols to be conveyed using the same air link resources but with the non-zero ZSR symbols having a higher power level. The ZSR module generates a mixture of zero and non-zero modulation symbols. A ZSR modulation scheme communicates information using both the position of the non-zero modulation symbols and the phase and/or amplitude of the non-zero modulation symbols. Different ZSR schemes, implementing different ratios relating the number of zero symbols to the total number of symbols, can be associated with different low data rates while second module modulation schemes can be associated with different high data rates. Modulation symbols from two modules are in some embodiments, superimposed. In some embodiments, non-zero ZSR modulation symbols punch out second module modulation symbols which occupy the same air link resource.Type: GrantFiled: March 7, 2006Date of Patent: November 26, 2013Assignee: QUALCOMM IncorporatedInventors: Rajiv Laroia, Hui Jin, Tom Richardson, Junyi Li
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Patent number: 8554134Abstract: A communication system, a relay station, a mobile station, a base station, and a method using a network coding scheme are provided. A communication system includes a relay station, a mobile station, and a base station. A relay station includes a message receiving unit to receive a downlink message transmitted from a base station and an uplink message transmitted from a mobile station, a message generation unit to generate a network coded message by coding the downlink message and the uplink message according to a network coding scheme, and a message transmission unit to transmit the network coded message to the base station and the mobile station during the same time slot.Type: GrantFiled: November 4, 2008Date of Patent: October 8, 2013Assignees: Samsung Electronics Co., Ltd., Industry-Academic Cooperation Foundation, Yonsei UniversityInventors: Jung Min So, Rakesh Taori, Mi-Sun Do, Seong-Lyun Kim, June Hwang
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Patent number: 8526900Abstract: Techniques for performing automatic gain control (AGC) at a terminal in a wireless communication network are described. In an aspect, the terminal may use different receiver gain settings to receive different types of signals in different time intervals. The terminal may determine a receiver gain setting for each signal type and may use the receiver gain setting to receive signals of that signal type. In another aspect, the terminal may determine a receiver gain setting for a future time interval based on received power levels for peer terminals expected to transmit in that time interval. The terminal may measure received power levels of signals received from a plurality of terminals. The terminal may determine a set of terminals expected to transmit in the future time interval and may determine the receiver gain setting for the future time interval based on the measured received power levels.Type: GrantFiled: July 9, 2012Date of Patent: September 3, 2013Assignee: QUALCOMM IncorporatedInventors: Junyi Li, Ying Wang, Thomas Richardson, Aleksandar Jovicic
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Patent number: 8509683Abstract: A two conductor hard wired communications link accepts an actual value of at least one parameter of interest from an environmental sensor in the form of data encoded on the conductors via current modulation. The sensor is mounted in location remote from an irrigation controller. A circuit connected to the sensor transmits an RF signal representing an actual value of a parameter of interest detected by the sensor. A data relay is connected to the hard wired communication link of the irrigation controller. The data relay includes a receiver that receives the RF signal, and circuitry configured to extract the actual value of the parameter of interest and emulate a predetermined set of physical and protocol properties of the hard wired communication link of the irrigation controller.Type: GrantFiled: August 28, 2012Date of Patent: August 13, 2013Assignee: Hunter Industries, Inc.Inventor: Peter J. Woytowitz
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Patent number: 8503928Abstract: A communications system including communications devices is provided. A communications device, a trainer, generates at least one concatenated training sequence, transmits the at least one concatenated training sequence, and receives one or more response messages describing corresponding channel characteristics from at least one of the rest of the plurality of communications devices. One or more of the rest of the plurality of communications devices, trainees, each receives the at least one concatenated training sequence, determines channel characteristics between the trainer and a trainee according to the at least one received concatenated training sequence, embeds channel characteristics information to generate at least one of the response messages, and transmits the response message.Type: GrantFiled: June 9, 2009Date of Patent: August 6, 2013Assignee: Mediatek Inc.Inventors: Chao-Chun Wang, Yuh-Ren Jauh, Yung Ping Hsu
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Patent number: 8498278Abstract: A system is provided for a wireless local area network. The system includes, but is not limited to, at least one cell controller and simplified RF ports which are configured to provide lower level media access control functions. Higher level media access control functions are provided in a cell controller, which may service one or more RF ports that are capable operating with at least two wireless local area subnetworks. Mobile units can also be configured with the higher level media access control functions being performed in a host processor.Type: GrantFiled: January 11, 2007Date of Patent: July 30, 2013Assignee: Symbol Technologies, Inc.Inventor: Robert Beach
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Patent number: 8476812Abstract: A solid state lighting device includes at least one emitter and a forged heatsink arranged to receive and dissipate heat generated by emitter(s). The heatsink may have a thickness and/or profile that varies in at least two dimensions. Fabrication of a solid state lighting device may include providing a forged heatsink, and mounting at least one solid state emitter in thermal communication with the heatsink. A space or object may be illuminated with a lighting device including at least one solid state emitter and a forged heatsink. The lighting device may be operated responsive to at least one sensor arranged to sense temperature and/or at least one characteristic of light emitted by the emitter(s).Type: GrantFiled: July 7, 2009Date of Patent: July 2, 2013Assignee: Cree, Inc.Inventors: Wai Kwan Chan, Derek Ian Darley, Antony Paul Van De Ven, Gerald H. Negley
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Patent number: 8478203Abstract: Multipoint broadcasting requires the base stations to be phase-synchronized. Methods and apparatus are described that provide phase synchronization of base stations with the downlink-channel phase feedback by mobile users. Also described are methods and apparatus that make phase synchronization of base stations independent of multipoint-broadcast sessions, thus reducing the synchronization overhead and improving network capacity. The methods and apparatus utilize model-based downlink-channel phase feedback that reduces most of the feedback overhead. Applications of the described methods and apparatus include wireless multipoint broadcast systems, also known as coordinated multipoint transmission, or CoMP, in LTE-A (long-term evolution, advanced) systems, and frequency and phase synchronization of a cluster of base stations, or more generally, of a cluster of wireless devices.Type: GrantFiled: July 31, 2011Date of Patent: July 2, 2013Inventor: Xiao-an Wang
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Patent number: 8472884Abstract: Microelectronics have now developed to the point where radiation within the terahertz frequency range can be generated and used. Here, an integrated circuit or IC is provided that includes a phased array radar system, which uses terahertz radiation. In order to accomplish this, several features are employed; namely, a lower frequency signal is propagated to transceivers, which multiplies the frequency up to the desired frequency range. To overcome the losses from the multiplication, an injection locked voltage controlled oscillator (ILVCO) is used, and a high frequency power amplifier (PA) can then be used to amplify the signal for transmission.Type: GrantFiled: September 9, 2010Date of Patent: June 25, 2013Assignee: Texas Instruments IncorporatedInventors: Brian P. Ginsburg, Vijay B. Rentala, Srinath M. Ramaswamy, Baher S. Haroun, Eunyoung Seok
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Patent number: 8467723Abstract: A mobile communication system includes a plurality of RAT (Radio Access Technology) and can eliminate the need of a control channel for reporting RAT information. An LTE relay station has a cover area identical to a cover area owned by a WLAN host station and relays/transmits the signal received from an LTE base station to a mobile station in the cover area of the LTE relay station. The LTE relay station adds to the signal received from the LTE base station, one of the offsets: a frequency offset, a time offset, and a power offset as information indicating that the mobile station which receives a relay signal from the local station is located in the cover area of WLAN and transmits the signal after offset addition to the mobile station located in the cover area of the LTE relay station (i.e., the cover area of WLAN).Type: GrantFiled: August 14, 2012Date of Patent: June 18, 2013Assignee: Panasonic CorporationInventors: Yoshiko Saito, Takashi Aramaki, Kenichi Miyoshi, Katsuhiko Hiramatsu, Hidetoshi Suzuki, Jun Hirano
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Patent number: 8457547Abstract: A magnetic induction (MI) repeater includes first and second coils configured to have the same resonance frequency and to be substantially isolated from one another, and an amplifier connected to the first and second coils and configured to receive a signal induced in the first coil by a first magnetic field and output, via the second coil, a second magnetic field based on the signal, wherein the second magnetic field is amplified relative to the first magnetic field.Type: GrantFiled: April 28, 2009Date of Patent: June 4, 2013Assignee: Cochlear LimitedInventor: Werner Meskens
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Patent number: 8442020Abstract: A system and method of generating a position is disclosed. The system and method are configured for receiving from a transmitter an M-code signal, the M-code signal modulated with a pseudorandom number sequence. The system and method are also configured for down converting the received M-code signal to a baseband signal. Further, the system and method are configured for correlating the baseband signal with a known pseudorandom number sequence. Further still, the system and method are configured for processing the converted baseband signal to remove errors due to phase distortion of the M-code signal.Type: GrantFiled: September 12, 2006Date of Patent: May 14, 2013Assignee: Rockwell Collins, Inc.Inventor: Todd D. Peterson
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Patent number: 8415868Abstract: A lamp (10) for an automotive headlamp and a method for manufacturing such kind of a lamp (10) is provided, wherein the lamp (10) comprises a burner (12) for emitting light, a metal holder (20) connected to the burner (12) for supporting the burner (12), a first socket part (32) made from a heat-resistant plastic material, which is connected to the burner (12), and a second socket part (34), through which a part of the burner (12), which is connected to a first electrical pole (14), is led for connecting the burner (12) to a voltage source, wherein the second socket part (34) is arranged adjacent to the first socket part (32) such, that at least one insulating gap (42) for providing voltage resistance in mainly radial and/or axial direction is provided. Due to the first socket part (32) it is possible to receive the hot burner (12) by the socket without impairing the heat resistance, wherein the second socket part (34) may be made from a cheaper material.Type: GrantFiled: April 20, 2009Date of Patent: April 9, 2013Assignee: Koninklijke Philips Electronics N.V.Inventors: Markus Gerhard, Herbert Schartmann, Manfred Westemeyer, Ralf Muckel, Wilfried Emunds
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Patent number: RE44200Abstract: A wireless communication system enabling multihop communication while maintaining the system throughput and preventing degradation of the user throughput. In the system, a BS (base station) determines the relaying method (whether an RS performs reproduction relay or nonreproduction relay) of the RS (relaying station) and the MCS of multihop communication according to the reception quality (the line quality among an MS2, the RS, and the BS) of the pilot for nonreproduction relay, the reception quality (the line quality between the RS and the BS) of the pilot 2 for reproduction relay, and the line quality (the line quality between the MS2 and the RS) measured at the RS. The determination result is transmitted as relay information to the RS and to the MS2 (a mobile station (2)) through the RS. The MS2 encodes and modulates the uplink data with the MCS based on the relay information and transmits the data to the RS.Type: GrantFiled: March 13, 2006Date of Patent: May 7, 2013Assignee: Panasonic CorporationInventors: Tomohiro Imai, Ayako Horiuchi, Akihiko Nishio, Kenichi Kuri, Hiroaki Morino
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Patent number: RE45125Abstract: A wireless communication system enabling multihop communication while maintaining the system throughput and preventing degradation of the user throughput. In the system, a BS (base station) determines the relaying method (whether an RS performs reproduction relay or nonreproduction relay) of the RS (relaying station) and the MCS of multihop communication according to the reception quality (the line quality among an MS2, the RS, and the BS) of the pilot for nonreproduction relay, the reception quality (the line quality between the RS and the BS) of the pilot 2 for reproduction relay, and the line quality (the line quality between the MS2 and the RS) measured at the RS. The determination result is transmitted as relay information to the RS and to the MS2 (a mobile station (2)) through the RS. The MS2 encodes and modulates the uplink data with the MCS based on the relay information and transmits the data to the RS.Type: GrantFiled: March 13, 2013Date of Patent: September 9, 2014Assignee: Panasonic Intellectual Property Corporation of AmericaInventors: Tomohiro Imai, Ayako Horiuchi, Akihiko Nishio, Kenichi Kuri, Hiroaki Morino
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Patent number: RE45171Abstract: A wireless communication system enabling multihop communication while maintaining the system throughput and preventing degradation of the user throughput. In the system, a BS (base station) determines the relaying method (whether an RS performs reproduction relay or nonreproduction relay) of the RS (relaying station) and the MCS of multihop communication according to the reception quality (the line quality among an MS2, the RS, and the BS) of the pilot for nonreproduction relay, the reception quality (the line quality between the RS and the BS) of the pilot 2 for reproduction relay, and the line quality (the line quality between the MS2 and the RS) measured at the RS. The determination result is transmitted as relay information to the RS and to the MS2 (a mobile station (2)) through the RS. The MS2 encodes and modulates the uplink data with the MCS based on the relay information and transmits the data to the RS.Type: GrantFiled: March 13, 2013Date of Patent: September 30, 2014Assignee: Panasonic Intellectual Property Corporation of AmericaInventors: Tomohiro Imai, Ayako Horiuchi, Akihiko Nishio, Kenichi Kuri, Hiroaki Morino