Transmitter Controlled By Signal Feedback From Receiver Patents (Class 455/69)
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Patent number: 8923844Abstract: In one embodiment, a method for wireless communication includes receiving cell information for a cluster of cells to be coordinated. A first cluster scheduling order used for the cluster of cells is retrieved. The first cluster scheduling order represents a sequence in which the cluster of cells were scheduled in a previous schedule. A second cluster scheduling order is generated. The second cluster scheduling order determines a sequence in which the cluster of cells are scheduled in an upcoming schedule. The second cluster scheduling order is decided based on the first cluster scheduling order and/or the cell information. The second cluster scheduling order is transmitted to the cluster of cells.Type: GrantFiled: August 9, 2010Date of Patent: December 30, 2014Assignee: Futurewei Technologies, Inc.Inventors: Cornelius van Rensburg, Oghenekome Oteri
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Patent number: 8923427Abstract: A method includes, in a mobile communication terminal, holding a definition of a sub-sampled codebook identifying precoding matrices, which are selected from a master codebook that is made-up of a wideband codebook and a frequency-selective codebook. The definition defines a first subset of the wideband codebook and a second subset of the frequency-selective codebook. The second subset of the frequency-selective codebook is represented using no more than two bits. A Multiple-Input Multiple-Output (MIMO) signal is received in the terminal. Based on the received MIMO signal, one or more precoding matrices are selected from the sub-sampled codebook for precoding subsequent MIMO signals transmitted to the terminal, and precoding feedback indicating the selected precoding matrices is calculated. The precoding feedback is transmitted from the terminal.Type: GrantFiled: November 6, 2012Date of Patent: December 30, 2014Assignee: Marvell World Trade Ltd.Inventor: Krishna Srikanth Gomadam
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Patent number: 8918112Abstract: Providing for management of wireless communications in a heterogeneous wireless access point (AP) environment is described herein. By way of example, system data of an over-the-air message can be configured to include information identifying a distinct type of transmitting base station. In some aspects, the information can include an access type of the base station and/or a sector ID for distinguishing the base station among large numbers of other base stations. According to other aspects, the information can include wireless channel resources designated for a particular type of base station, or blanked by the transmitting base station, to facilitate interference reduction on such resources. By employing aspects of wireless communication management disclosed herein, efficient and reliable communication can be affected in large heterogeneous AP networks.Type: GrantFiled: October 29, 2008Date of Patent: December 23, 2014Assignee: QUALCOMM IncorporatedInventors: Aamod Khandekar, Alexei Gorokhov, Naga Bhushan, Ravi Palanki, Ashwin Sampath, Avneesh Agrawal
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Patent number: 8918097Abstract: A method (400, 500) and a system 200 for managing service in an access network (110) for wireless communication. The method can include monitoring at least one environmental condition and, responsive to detecting a change in the environmental condition, adjusting at least one service parameter. The system can include an environmental detector (130) that monitors at least one environmental condition and a processor (202) that, responsive to detecting a change in the environmental condition, adjusts at least one service parameter.Type: GrantFiled: November 28, 2007Date of Patent: December 23, 2014Assignee: Motorola Mobility LLCInventors: Matt J. Dillon, Robert W. Delellis
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Patent number: 8918137Abstract: Embodiments of a system and method for transmitting data from an access point in a multiple user multiple input multiple output (MU-MIMO) system are provided. A first indication of signal quality (ISQ) is received at the access point from a first station and a second ISQ is received from a second station. The access point sets a first power level and a first modulation and coding scheme (MCS) for transmission of a first aggregated media access control (MAC) protocol data unit (A-MPDU) to the first station as a function of the first ISQ and an amount of payload data corresponding to the first A-MPDU. The access point also sets a second power level and a second MCS for transmission of a second A-MPDU as a function of the second ISQ and an amount of payload data corresponding to the second A-MPDU.Type: GrantFiled: October 7, 2013Date of Patent: December 23, 2014Assignee: Intel CorporationInventors: Huaning Niu, Qinghua Li, Honggang Li
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Patent number: 8917622Abstract: A Base Station (BS) communication module and a Customer Premise Equipment (CPE) communication module are adapted to implement a method for selecting a Modulation and Coding Scheme (MCS). The method for selecting an MCS includes the following steps: receiving a plurality of first packets in a first period, and calculating a Packet Error Rate (PER); determining whether the PER is greater than an error rate threshold; and when the PER is greater than the error rate threshold, performing the following steps: obtaining a Carrier to Interference plus Noise Ratio (CINR) return value; performing an adjusting procedure to obtain a CINR adjustment value; calculating an actual return value according to the CINR return value and the CINR adjustment value; and selecting one of a plurality of MCSs according to the actual return value.Type: GrantFiled: January 31, 2013Date of Patent: December 23, 2014Assignee: Gemtek Technology Co., Ltd.Inventors: Chien-Tse Yu, Wan-Yu Wang, Fu-Ming Yeh
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Patent number: 8918061Abstract: A method and apparatus for reducing feedback transmission overhead in wireless communications. Averaging, compression, or both are used to reduce a number of bits needed for transmission of channel quality information.Type: GrantFiled: March 14, 2008Date of Patent: December 23, 2014Assignee: InterDigital Technology CorporationInventors: Afshin Haghighat, Robert L. Olesen, Guodong Zhang, Zinan Lin
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Patent number: 8914056Abstract: A mobile station device includes a receiving section configured to receive a control signal used for changing a value of the transmission power of the mobile station device from a base station, and a control section configured to change, if the transmission power value of the mobile station device is more than a certain threshold value when the control signal has been received, the transmission power value by setting an extent to which the transmission power value is to be changed as a certain extent of change, and, if the transmission power value of the radio mobile station device is less than the certain threshold value when the receiving section received, change the transmission power value by making the extent of change of the transmission power value smaller than the certain extent of change.Type: GrantFiled: July 17, 2009Date of Patent: December 16, 2014Assignee: Fujitsu LimitedInventor: Shoichi Miyamoto
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Patent number: 8914057Abstract: A system and method are provided for operating a cellular communications network including a first base station and a second base station. The method comprises reducing the downlink transmission power of the second base station and increasing the downlink transmission power of the first base station, based upon the level of data traffic being communicated through the second base station; and receiving an initial uplink transmission from a mobile station at the second base station and identifying that the second base station can provide a communications service to the mobile station.Type: GrantFiled: October 26, 2011Date of Patent: December 16, 2014Assignee: Vodafone IP Licensing LimitedInventors: Timothy James Frost, Assen Mahaboob Khan Golaup, MingKai Nan
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Patent number: 8913966Abstract: A method for use in an access point includes managing communication, based on an associated set of communication parameters, between a first client wireless transceiver and the packet switched backbone network, and between a second client wireless transceiver and the packet switched backbone network. A hidden terminal condition is identified, based on at least the attempt to detect transmissions from the second client wireless transceiver circuitry by the first client processing circuitry. At least one parameter of the associated set of communication parameters is altered to address the hidden terminal condition.Type: GrantFiled: September 3, 2010Date of Patent: December 16, 2014Assignee: Broadcom CorporationInventor: James D. Bennett
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Patent number: 8914685Abstract: A method and apparatus for encoding channel quality indicator (CQI) and precoding control information (PCI) bits are disclosed. Each of the input bits, such as CQI bits and/or PCI bits, has a particular significance. The input bits are encoded with a linear block coding. The input bits are provided with an unequal error protection based on the significance of each input bit. The input bits may be duplicated based on the significance of each input bit and equal protection coding may be performed. A generator matrix for the encoding may be generated by elementary operation of conventional basis sequences to provide more protection to a most significant bit (MSB).Type: GrantFiled: February 13, 2013Date of Patent: December 16, 2014Assignee: InterDigital Technology CorporationInventors: Rui Yang, Philip J. Pietraski, Eidad M. Zeira, Alexander Reznik, Yongwen E. Yang
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Patent number: 8914020Abstract: Methods and arrangements for reporting of measurement information from a user equipment to a receiving entity via a network node comprised in a wireless communication system are disclosed. The embodiments relate to measurement logging function and immediate reporting function called Minimizing Drive Tests (MDT). The problem of reporting measurements in another RAT than in the RAT in which the measurements were collected in is addressed by a solution where a UE includes the measurement information collected in a first RAT in a message which is sent 36 to a network node in a second RAT. The network node then forwards 37 the message to a receiving entity without having to decode the actual content of the measurement log. This is done by introducing the receiving entity's IP address and/or similar addressing information in an address field in the message and using a container structure where the actual measurement log as reported by the UE is placed.Type: GrantFiled: May 23, 2011Date of Patent: December 16, 2014Assignee: Telefonaktiebolaget L M Ericsson (Publ)Inventors: Håkan Persson, Henrik Enbuske, Håkan Palm
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Patent number: 8913969Abstract: The present disclosure relates to amplitude based pre-distortion calibration of an RF communications terminal, such as a cell phone, by transmitting a first standard RF transmit burst from the RF communications terminal to an RF test instrument, which assimilates the first standard RF transmit burst. A calibration control system extracts information regarding the first standard RF transmit burst from the RF test instrument; determines amplitude based distortion of the RF communications terminal using the extracted information; determines amplitude based pre-distortion calibration information using the determined amplitude based distortion; and calibrates the RF communications terminal using the amplitude based pre-distortion calibration information. By using a single-shot transmit burst, calibration times may be minimized.Type: GrantFiled: May 21, 2010Date of Patent: December 16, 2014Assignee: RF Micro Devices, Inc.Inventors: Hirofumi Honjo, Suryanarayana Pappu, Mikko Sannala, Ricke W. Clark
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Systems and methods for reducing interference between a plurality of wireless communications modules
Patent number: 8913962Abstract: A wireless communications includes a first wireless communications and a second wireless communications. The first wireless communications module transmits or receives a first wireless signal in a first frequency band selected from a first frequency range. The second wireless communications module transmits or receives a second wireless signal in a second frequency band selected from a second frequency range, and adjusts a transmission power of the second wireless signal in response to that a frequency offset between the first frequency band and the second frequency band falls within a predetermined range. The first wireless communications module is further configured to determine an in-band range in the overlapping part of the first and second frequency ranges, and a transmission power of the second wireless signal is adjusted in response to a frequency offset between the first frequency band and the second frequency band.Type: GrantFiled: May 21, 2014Date of Patent: December 16, 2014Assignee: MediaTek IncInventors: Hong-Kai Hsu, Li-Chun Ko, Chia-Ming Chang, Chih-Hao Yeh, En-Chieh Hsia, I-Lin Hsieh, Wen-Ying Chien, Jwo-An Lin, Ting-Che Tseng, Yuan Chen -
Patent number: 8909279Abstract: Transmit power (e.g., maximum transmit power) may be defined based on the maximum received signal strength allowed by a receiver and a minimum coupling loss from a transmitting node to a receiver. Transmit power may be defined for an access node (e.g., a femto node) such that a corresponding outage created in a cell (e.g., a macro cell) is limited while still providing an acceptable level of coverage for access terminals associated with the access node. An access node may autonomously adjust its transmit power based on channel measurement and a defined coverage hole to mitigate interference. Transmit power may be defined based on channel quality. Transmit power may be defined based on a signal-to-noise ratio at an access terminal. The transmit power of neighboring access nodes also may be controlled by inter-access node signaling.Type: GrantFiled: August 6, 2008Date of Patent: December 9, 2014Assignee: QUALCOMM IncorporatedInventors: Mehmet Yavuz, Sanjiv Nanda, Mostafa S. El-Khamy
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Patent number: 8909159Abstract: Embodiments of a system and methodology are disclosed for aperiodic (i.e., non-periodic) feedback of channel-side information, such as channel rank information, to a base station by having the receiver/UE initiate the feedback instead of using a scheduled feedback approach. The autonomous feedback of channel-side information may use one of several different types of physical channel structures for uplink scheduling requests, such as those being discussed for inclusion in the emerging LTE platform standard.Type: GrantFiled: October 22, 2012Date of Patent: December 9, 2014Assignee: Apple Inc.Inventors: Jayesh H. Kotecha, James W. McCoy
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Patent number: 8909160Abstract: A method and a communications system are provided. The system includes a base station and a RNC. The base station does not report the RNC whether the base station supports an E-DPCCH power boost capability. The RNC is also informed whether a UE supports and E-DPCCH power boost capability. If the UE supports E-DPCCH power boost function, the RCE designates by default that the base station also supports the E-DPCCH power boost function even though the base station does not report whether it supports or not, and configures resources for the base station to perform channel estimation by using the E-DPCCH power boost feature for the UE. Through the solution of the system, the accuracy of channel estimation can be improved and thus a bit error rate in high-speed data transmission can be reduced.Type: GrantFiled: November 9, 2012Date of Patent: December 9, 2014Assignee: Huawei Technologies Co., Ltd.Inventors: Shukun Wang, Dingzhang Dai, Xin Huang, Boya Lv
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Patent number: 8908788Abstract: A method for selecting antenna elements at a base station can include selecting multiple transmit antenna elements from several antenna elements according to a work mode of the base station. The work mode can be an open-loop or a closed-loop working mode. In open-loop mode the base station does not receive feedback information regarding channel quality from a mobile station. In closed-loop mode feedback information is received. For example, for control signaling, or when the speed of a mobile station is very high, the base station may determine that the working mode is open-loop. When the information being transmitted is data for a specific mobile station and the mobile station is moving at a speed under a threshold, the base station may select or determine the working mode to be the closed-loop working mode. Antenna elements are selected, for example, according to a spatial correlation appropriate to the work mode.Type: GrantFiled: December 31, 2010Date of Patent: December 9, 2014Assignee: Alcatel LucentInventors: Keying Wu, Dong Li
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Patent number: 8909281Abstract: The present invention discloses a method and a system for controlling an uplink transmitting power, and a base station, wherein the method comprises: determining respective power control parameters of each frequency partition in a system whose uplink frequency band is divided into a plurality of frequency partitions, wherein each frequency partition comprises a plurality of physical sub-carriers; and a base station transmitting the power control parameters of all or part of the frequency partitions to a terminal, so that the terminal determines a transmitting power on a sub-carrier included in a corresponding frequency partition according to the power control parameters.Type: GrantFiled: March 13, 2009Date of Patent: December 9, 2014Assignee: ZTE CorporationInventors: Zhaohua Lu, Peng Hao, Yan Xue, Ying Liu, Kun Liu
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Patent number: 8908543Abstract: An apparatus and operation method of a Base Station (BS) for allocating a radio resource in a Cognitive Radio (CR) wireless communication system includes, when a licensed system is activated, determining whether each of User Terminals (UTs) located in a cell satisfies Quality of Service (QoS). If all of the UTs satisfy the QoS, a binary message indicating ‘on’ is broadcasted to neighbor BSs. If at least one of the UTs does not satisfy the QoS, a binary message indicating ‘off’ is broadcasted to the neighbor BSs, and when the binary message indicating ‘off’ is received from at least one of the neighbor BSs, the binary message indicating ‘off’ is broadcasted to the UTs.Type: GrantFiled: March 11, 2010Date of Patent: December 9, 2014Assignees: Samsung Electronics Co., Ltd., Sungkyunkwan University Foundation for Corporate CollaborationInventors: Sang-Bum Kim, Ho-Dong Kim, Dong-In Kim, Eun-Taek Lim, Woo-Jin Shin, Kyoung-Youp Park
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Patent number: 8903329Abstract: A wireless communications device includes multiple switchable antenna elements that may be used to improve interfacing of the wireless communications device with other devices, such as for interfacing of an RFID-equipped mobile communications device with other RFID devices (e.g., to better ensure power delivery to and/or communication with such other RFID devices) and/or may be used to characterize various aspects of the environment around the wireless communications device, such as for proximity-based functionality.Type: GrantFiled: May 31, 2012Date of Patent: December 2, 2014Assignee: Facebook, Inc.Inventor: Yael G. Maguire
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Patent number: 8903375Abstract: In a method and a device for automated compensation for a cell/sector outage parameters of uplink power control are adjusted in order to tradeoff coverage versus quality. The uplink power control parameters can be continuously optimized in response to traffic and network characteristics thereby providing for an optimized performance degradation in cells surrounding the coverage hole.Type: GrantFiled: March 29, 2010Date of Patent: December 2, 2014Assignee: Telefonaktiebolaget L M Ericsson (Publ)Inventors: Mehdi Amirijoo, Fredrik Gunnarsson, Johan Moe
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Patent number: 8903448Abstract: Transmit power for an access point is controlled based on measurement reports received by the access point from one or more access terminals that are not currently being served by the access point. In some aspects, transmit power is controlled based on the number of received messages that correspond to a particular event. In some aspects, transmit power is controlled based on the contents of the received messages. For example, the access point may use signal strength information included in the messages to determine a level of transmit power that mitigates interference at a defined subset of reporting access terminals.Type: GrantFiled: February 18, 2011Date of Patent: December 2, 2014Assignee: QUALCOMM IncorporatedInventors: Vinay Chande, Farhad Meshkati, Chirag Sureshbhai Patel, Mehmet Yavuz, Sumeeth Nagaraja
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Patent number: 8903328Abstract: A method for transmitting channel status information (CSI) of downlink transmission via uplink in a wireless communication system includes transmitting a rank indicator (RI) and a precoder type indicator (PTI) at a first subframe, transmitting at a second subframe a first precoding matrix indicator (PMI) when the PTI has a first value and transmitting a second PMI and a wideband channel quality indicator (WB CQI) when the PTI has a second value, and transmitting at a third subframe a second PMI and a WB CQI when the PTI has a first value and transmitting a subband (SB) CQI and a second PMI when the PTI has a second value. A user equipment (UE) preferred precoding matrix is indicated by a combination of the first PMI and the second PMI. Subsampled codebooks of precoding codebooks of individual Rank-2, Rank-3 and Rank-4 are applied to the second PMI.Type: GrantFiled: September 23, 2011Date of Patent: December 2, 2014Assignee: LG Electronics Inc.Inventors: Hyunsoo Ko, Sunam Kim, Dongguk Lim, Moonil Lee, Jaehoon Chung
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Patent number: 8903319Abstract: A method, apparatus, and system for transmitting and controlling uplink diversity signals in a mobile communication device. While in a soft handoff situation, a mobile communications device may receive a phase feedback signal from a non-serving base station. The mobile device may calculate a modified phase parameter based on the phase feedback signal from the non-serving base station in order to minimize interference with the non-serving base station, for example, by calculating a modified value of a phase difference in a direction opposite to the direction desired by the non-serving base station. In some embodiments of the invention, the mobile device may determine whether to calculate the modified phase parameter in a direction opposite to the direction indicated by the phase feedback signal of the non-serving base station based on a comparison of power feedback signals received from the non-serving and serving base stations.Type: GrantFiled: February 10, 2012Date of Patent: December 2, 2014Assignee: Google Inc.Inventors: Sherwin J. Wang, Kenneth Kludt, Phil F. Chen, Haim Harel
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Patent number: 8903327Abstract: Methods and apparatuses are provided for facilitating dynamic measurement power offset adjustments for use in reporting channel quality feedback. A user equipment may generate and send a plurality of channel quality indicator (CQI) values to a base station. The base station determines whether at least some of the received CQI values are outside of an upper or lower threshold value. If at least some of the received CQI values are outside the upper or lower threshold value, the base station can transmit an adjusted measurement power offset to the user equipment. On receipt of the adjusted measurement power offset, the user equipment generates subsequent CQI values using the adjusted measurement power offset.Type: GrantFiled: September 15, 2011Date of Patent: December 2, 2014Assignee: QUALCOMM IncorporatedInventors: Andrea Garavaglia, Long Duan, Jochen Hoidis, Amer Catovic
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Patent number: 8903321Abstract: Various systems and methods for network management are disclosed. In one embodiment, a network management system comprises a receiver for receiving data from a plurality of entities, including base stations and/or subscriber handsets, a processor for generating a network map or a recommendation based on the received data, a display device for displaying the network map or recommendation, and a transmitter for transmitting instructions based on the recommendation.Type: GrantFiled: June 19, 2012Date of Patent: December 2, 2014Assignee: QUALCOMM IncorporatedInventors: Anastasios Stamoulis, Arnab Chakrabarti, Dexu Lin, Kambiz Azarian Yazdi, Tingfang Ji
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Patent number: 8897828Abstract: Power control in a wireless network is disclosed. Transmit power control (TPC) commands may be accumulated by a user equipment (UE). If accumulation is enabled, the UE may receive on a single physical channel an allocation of a scheduled uplink resource and a TPC command. The TPC command may be accumulated with other received TPC commands. A transmit power for an uplink communication based on both the path loss and the accumulated TPC commands may then be calculated by the UE. If accumulation is not enabled, the UE may receive an allocation of a scheduled uplink resource to transmit data at a calculated power level.Type: GrantFiled: August 12, 2004Date of Patent: November 25, 2014Assignee: Intellectual Ventures Holding 81 LLCInventor: Nicholas William Anderson
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Patent number: 8897725Abstract: A method implemented in a wireless communications system is disclosed. The method includes: transmitting, from a wireless transmitter having a transmit antenna array, a first signal on each of a plurality of different transmit beams in transmitter (TX) sector level sweep (SLS), receiving, at a wireless receiver having a receive antenna array, the first signal, and determining, at the wireless receiver, quality of the first signal. Other methods, systems, and apparatuses also are disclosed.Type: GrantFiled: April 17, 2013Date of Patent: November 25, 2014Assignee: NEC Laboratories America, Inc.Inventors: Narayan Prasad, Kishore Ramachandran, Sampath Rangarajan
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Patent number: 8897718Abstract: A method of provisioning a communications link between remote terminals within a hub-spoke network comprising receiving, by a first remote terminal, information about a second remote terminal from a hub, selecting, by the first remote terminal, a modulation factor, coding rate, symbol rate, center frequency, and power level based on the information received about the second remote terminal, transmitting, by the first remote terminal, a signal using at least one of the selected modulation factor, coding rate, symbol rate, center frequency, and power level, to the second remote terminal such that a communications link is created, and adjusting the modulation factor, coding rate, symbol rate, center frequency, or power level of the transmitted signal such that performance of the link is increased while maintaining a presence of the link.Type: GrantFiled: May 6, 2014Date of Patent: November 25, 2014Assignee: Comtech EF Data Corp.Inventors: Vasile Manea, Michael Beeler, Frederick Morris, Jeffery Harig
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Patent number: 8897712Abstract: Some demonstrative embodiments include devices, systems and/or methods of wireless communication via multiple antenna assemblies. For example, a device may include a wireless communication unit to transmit and receive signals via one or more quasi-omnidirectional antenna assemblies, wherein the wireless communication unit is to transmit, via each quasi-omnidirectional antenna assembly, a plurality of first transmissions, to receive, in response to the first transmissions, a plurality of second transmissions from another device via one or more of the quasi-omnidirectional antenna assemblies, and, based on the second transmissions, to select at least one selected transmit antenna assembly for transmitting to the other device and a selected receive antenna assembly for receiving transmissions from the other device. Other embodiments are described and claimed.Type: GrantFiled: September 15, 2013Date of Patent: November 25, 2014Assignee: Intel CorporationInventors: Menashe Sofer, Assaf Kasher
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Patent number: 8891386Abstract: A method of transmitting signals from a base station towards user terminals in a cellular communication system. The method includes generating diversity signals, wherein at least one of the diversity signals is subjected to a selectively variable RF phase shift. Specifically, a set of radio link quality indicators is determined at the base station, wherein each radio link quality indicator is representative of the quality of the radio link between the base station and a respective one of the user terminals. The set of radio link quality indicators is used to generate an aggregated radio quality indicator, which in turn is used to selectively vary the variable RF phase shift. For example, the phase shift may be selected, which optimizes the aggregated radio quality indicator.Type: GrantFiled: June 30, 2008Date of Patent: November 18, 2014Assignee: Telecom Italia S.p.A.Inventors: Loris Bollea, Bruno Melis, Roberto Rossi, Alfredo Ruscitto, Paolo Semenzato
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Patent number: 8891671Abstract: A method for calibrating a channel which includes: performing slide-window correlation on a delayed downlink service signal of a current transmit channel and a feedback signal of the transmit channel, and performing sampling to obtain a group of correlation values of the transmit channel in a sliding window; determining a peak amplitude value among amplitude values of the group of correlation values in the sliding window, and amplitude values at two points that are left adjacent and right adjacent to a point corresponding to the peak amplitude value; performing an interpolation operation on the peak amplitude value and the amplitude values at the two points that are left adjacent and right adjacent to the point to obtain an amplitude value, a delay and a phase at an actual peak point in the group of correlation values of the transmit channel in the sliding window; and calibrating the transmit channel.Type: GrantFiled: March 7, 2013Date of Patent: November 18, 2014Assignee: Huawei Technologies Co., Ltd.Inventor: Shaoming Li
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Patent number: 8891648Abstract: A system for transmitting and receiving Channel State Information (CSI) is provided, in which a terminal receives a pilot signal transmitted from a transmitter, the terminal estimates CSI of part of downlink channels based on the received pilot signal, the terminal superposes the CSI of part of downlink channels onto a uplink sounding signal orthogonally, and transmits them together; the transmitter obtains the CSI of the rest part of downlink channels by estimating the uplink sounding signal, the transmitter performs orthogonal de-multiplexing on the received signal to obtain the CSI of the part of downlink channels, the transmitter, by using the CSI of the two parts of downlink channels, pre-codes downlink data and transmits it to the terminal.Type: GrantFiled: August 21, 2009Date of Patent: November 18, 2014Assignee: Samsung Electronics Co., Ltd.Inventors: Lei Zhou, Zheng Zhao, Zongchuang Liang
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Patent number: 8891597Abstract: In a beamforming method, one or more compensation factor sets are applied to antennas of a first communication device. A modulation and coding scheme (MCS) for communicating with a second communication device is selected while applying a first compensation factor set to the antennas of the first communication device. For each of the one or more compensation factor sets, (i) a steering matrix is developed based on a data unit received at the first communication device from the second communication device, (ii) one or more data units are transmitted from the first communication device to the second communication device while applying the steering matrix and the compensation factor set to the first plurality of antennas, and (iii) a channel performance indicator is determined based on the one or more data units. A compensation factor set to be used in subsequent beamforming operations is selected based on the channel performance indicator.Type: GrantFiled: July 18, 2011Date of Patent: November 18, 2014Assignee: Marvell International Ltd.Inventors: Hongyuan Zhang, Rohit U. Nabar
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Patent number: 8891414Abstract: A method and apparatus for allocating subcarriers in an orthogonal frequency division multiple access (OFDMA) system is described. In one embodiment, the method comprises allocating at least one diversity cluster of subcarriers to a first subscriber and allocating at least one coherence cluster to a second subscriber.Type: GrantFiled: December 31, 2012Date of Patent: November 18, 2014Assignee: Adaptix, Inc.Inventors: Xiaodong Li, Hui Liu, Wenzhong Zhang, Kemin Li
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Patent number: 8891463Abstract: A radio base station (1) for use in a wireless communication system comprises—a scheduling unit (9) arranged to schedule at least one user terminal to which to transmit in each subframe and—a power allocation unit (11) arranged to allocate a first amount of power to be used for the at least one user terminal in each subframe, a transmitter (5) arranged to transmit a transport block in a subframe to a number of user terminals (3) in the wireless communication system in accordance with said scheduling and power allocation. The radio base station further comprises—a correction unit (5) arranged to determine, after scheduling has been performed for a chosen subframe, if there is excess power in the chosen subframe that has not been allocated to any user terminal and if so allocate at least a first part of the excess power to at least one user terminal scheduled in the subframe. The excess power is used when transmitting in the subframe.Type: GrantFiled: December 18, 2008Date of Patent: November 18, 2014Assignee: Telefonaktiebolaget L M Ericsson (publ)Inventors: Samuel Axelsson, Fredrik Ovesjö, Anders Jonsson, Markus Ringström
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Patent number: 8891529Abstract: A communications method implemented in a transmission point (TP) used in a coordinated multipoint transmission and reception (CoMP) system is disclosed. The communications method comprises transmitting, to a user equipment (UE), attributers for up to four indicators indicating at least physical downlink shared channel (PDSCH) resource element (RE) mapping, and transmitting, to the UE, one of the four indicators, each of which is conveyed in 2 bits, wherein the four indicators comprises ‘00’, ‘01’, ‘10’, and ‘11’ corresponding to a first set, a second set, a third set, and a fourth set of parameters, respectively. Other methods, apparatuses, and systems are also disclosed.Type: GrantFiled: July 23, 2013Date of Patent: November 18, 2014Assignee: NEC Laboratories America, Inc.Inventors: Guosen Yue, Narayan Prasad, Meilong Jiang, Sampath Rangarajan
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Patent number: 8892056Abstract: Protocol adaptation layer for wireless communications. Communication devices that include one or more radio modules operable in accordance with multiple communication protocols establish communications using one communication protocol and then switch to another communication protocol. This switching to another communication protocol may be performed based on a variety of factors including effectuating communications of higher throughput, supporting uni-directional communications vs. bi-directional communications, or any other desired factor. In some embodiments, various communication devices include two radio modules that are each implemented to operate in accordance with one particular communication protocol. Alternatively, a multi-protocol capable radio module may support and operate in accordance with more than one communication protocol. Examples of possible communication protocols include those compliant with Bluetooth, IEEE 802.11, and/or 802.15.3c.Type: GrantFiled: December 26, 2013Date of Patent: November 18, 2014Assignee: Broadcom CorporationInventors: Saishankar Nandagopalan, Christopher J. Hansen
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Patent number: 8891598Abstract: A communication device operating in time division duplex (TDD) mode using multiple antennas is provided herein. The communication device uses receive channel estimation measurements to perform transmit beamforming and multiple input multiple output (MIMO) transmission, based on self-calibration of the various up/down paths via a method of transmission and reception between its own antennas, thus achieving reciprocity mapping between up and down links. Either user equipment (UE) or a base station may routinely perform this self-calibration to obtain the most current correction factor for the channel reciprocity to reflect the most current operating conditions present during TDD MIMO operation.Type: GrantFiled: December 17, 2013Date of Patent: November 18, 2014Assignee: Magnolia Broadband Inc.Inventors: Sherwin J. Wang, Phil F. Chen, Haim Harel
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Patent number: 8892154Abstract: A method of operating a base station such that the method comprises determining whether there are any mobile devices that are not associated with the base station that require protection from interference caused by downlink transmissions of the base station and setting a maximum permitted transmission power for the base station based on the result of the step of determining. A base stations operating according to this method is also disclosed.Type: GrantFiled: May 31, 2013Date of Patent: November 18, 2014Assignee: Intel CorporationInventor: Nicholas William Whinnett
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Patent number: 8892152Abstract: A method and apparatus optimizes transmitter power allocations among a plurality of wireless channels that connect to remote units. The optimizing is effected by the remote units sending information to the base stations regarding the quality of the channels. The apparatus modifies the received information to arrive at operating estimates that account for service grades, and through an iterating process that accounts for probability of actual channel qualities relative to the operating estimates of the channel qualities, allocates the transmitter's power to the different channels.Type: GrantFiled: October 26, 2011Date of Patent: November 18, 2014Assignee: AT&T Intellectual Property I, L.P.Inventors: Leonid Razoumov, Robert Raymond Miller, II
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Patent number: 8885747Abstract: In the field of communications, an information processing method, device, and system are provided. The information processing method includes: receiving Precoding Control Indications (PCIs); determining a target PCI according to statistics of the PCIs and/or sources of the PCIs; and performing uplink Multiple Input Multiple Output sending control according to the target PCI. A User Equipment and an information processing system are also provided.Type: GrantFiled: November 10, 2011Date of Patent: November 11, 2014Assignee: Huawei Technologies Co., Ltd.Inventors: Chongyang Han, Jun Chen, Jing Li
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Patent number: 8886249Abstract: The invention relates to a method and system of setting transmitter power levels, particularly in a Local Network Node transmitter, providing a pico cell for private use. A User Equipment (UE) is used to make measurements of the transmission link properties, such as downlink power and round trip time. Based on the measurements made at one or a plurality of locations, the power of the Local Network Node can be determined such that interference is minimized with any overlying cells of a macro-network. Call handovers between the UE and the cell of a macro network can also be arranged based on properties measure by the UE.Type: GrantFiled: November 9, 2012Date of Patent: November 11, 2014Assignee: Airvana LPInventor: Andrew Richardson
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Patent number: 8886179Abstract: A fault remediation system for fielded wireless mobile devices addresses field failure data collection, consolidation of field failure data, and an information services platform so that the players in a wireless/mobile broadcast/broadband application/service value chain to respond to field failure problems in a consistent and automated manner from wireless/mobile devices over wireless multicast and or wireless broadband networks. An elegant and extremely flexible mechanism enables the failure data collection from a targeted set of wireless/mobile devices. In addition, sophisticated mechanisms identify targeted set of devices that should participate in field failure data collection based on user specified operational requirements (e.g., selected OEM, device configuration type, subscribers to a specific wireless broadband serve, failure occurrence certain time limits, etc.).Type: GrantFiled: October 23, 2007Date of Patent: November 11, 2014Assignee: QUALCOMM IncorporatedInventors: Hanumantha R. Pathuri, Ramesh Sathyanarayana
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Patent number: 8886134Abstract: The invention relates to a method for monitoring the integrity of a Doppler transceiver, where a Doppler transceiver comprises a transmitter unit, a receiver unit and a mixer unit, where a signal is transmitted from the transmitter characterized in that the transmitted signal is at least partially coupled into a modulation unit, where the coupled signal is modulated according to certain parameters, and the modulated signal is transmitted to the receiver unit. The invention also relates to a Doppler transceiver comprising a transmitter unit and a receiver unit having at least one antenna (34, 54, 66, 74, 90, 96) and a mixer unit (38, 64), characterized in that it also comprises a modulation unit (48, 70, 86, 106) which is electrically disconnected to the antenna (34, 54, 66, 74, 90, 96).Type: GrantFiled: July 26, 2011Date of Patent: November 11, 2014Assignee: BEA SAInventors: Yves Borlez, Soufien Menai
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Patent number: 8885611Abstract: Apparatus, methods and computer program products operate a radio network controller in a wireless communications system to determine a factor to be used by user equipment operative in the wireless communications network to determine a gain factor for an E-TFC based on the gain factor of a reference E-TFC; and to signal the factor to the user equipment. The radio network controller may select the factor based on at least one criterion. In another aspect, apparatus, methods and computer program products operate user equipment to receive a factor from a wireless communications network, and to use the factor transmitted by the wireless communications network to determine a gain factor that relates a data signal to be transmitted by the user equipment in a data channel and a control signal transmitted by the electronic device in a control channel, where the control signal transmitted in the control channel carries information for use in receiving the data signal.Type: GrantFiled: December 20, 2007Date of Patent: November 11, 2014Assignee: Nokia CorporationInventors: Perttu Mella, Karri Ranta-Aho
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Patent number: 8886133Abstract: A network station power adjustment apparatus and a power adjustment method thereof are provided. The network station power adjustment apparatus connects to a base station. The base station connects to a mobile station. The network station power adjustment apparatus determines a synchronization time transformation function according to the connection status between the base station and the mobile station, and further transforms a Signal-Noise ratio between the base station and the mobile station into a synchronization time correspondingly. When the network station power adjustment apparatus determines that the synchronization time is greater than a threshold, the network station power adjustment apparatus transmits a power adjustment signal to the base station so that the base station lowers a base station down-link synchronization channel transmitting power accordingly.Type: GrantFiled: July 30, 2012Date of Patent: November 11, 2014Assignee: Institute for Information IndustryInventors: Jan-Shin Ho, Wei-Shing Wang
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Patent number: 8880064Abstract: The invention relates to a method for controlling the power for broadcasting a Cognitive Pilot Channel broadcasting lists of information to each of a plurality of meshes Mi (i=1 to n), n being the number of meshes in a geographical area comprising at least one base station (4) broadcasting the CPC to the meshes Mi. The method comprises the following steps: calculating for each mesh Mi a transmission power Pi; and broadcasting to each mesh Mi the Cognitive Pilot Channel with the power Pi.Type: GrantFiled: May 6, 2010Date of Patent: November 4, 2014Assignee: Nec CorporationInventor: Belkacem Mouhouche
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Patent number: 8880112Abstract: Methods are provided in a first radio network node for supporting transmission power adjustment of a mobile terminal and in a second radio network node for assisting the first radio network node in supporting such adjustment. The first radio network node and the mobile terminal are adapted to operate on a first radio access technology. The power adjustment of the mobile terminal is performed in order to reduce interference, caused by the mobile terminal, on the second radio network node. The second radio network node is adapted to operate on a second radio access technology. The method includes obtaining an indication that the second radio network node is interfered by transmissions from the mobile terminal, obtaining values of power control parameters for adjusting the transmission power of the mobile terminal and transmitting the obtained power control parameter values to the mobile terminal, in order to enable the adjustment of the transmission power of the mobile terminal.Type: GrantFiled: June 23, 2009Date of Patent: November 4, 2014Assignee: Optis Cellular Technology, LLCInventors: Joerg Huschke, Muhammad Kazmi, Farshid Ghasemzadeh