Patent application number | Description | Published |
20080219343 | SYSTEMS AND METHODS FOR PROCESSING A SIGNAL WITHIN A COMMUNICATIONS SYSTEM WITH A SUPERIMPOSED REFERENCE SIGNAL - A method for processing a signal within a communications system is described. A signal transmitted over a channel is received that includes an information signal and a reference signal. The information signal includes data. The reference signal is superimposed on the data. A channel impulse response of the channel is estimated based on the reference signal. The information signal is equalized based on the estimation of the channel impulse response by compensating the signal, estimating the information signal, canceling the reference signal and recovering the data. | 09-11-2008 |
20080225688 | SYSTEMS AND METHODS FOR IMPROVING REFERENCE SIGNALS FOR SPATIALLY MULTIPLEXED CELLULAR SYSTEMS - A method for using a numerical method to design reference signals for multiple input multiple output (MIMO) systems is described. An input multiple input multiple output signal is determined. A nearest tight frame to one or more given structured vectors is obtained. One or more structured vectors from the nearest tight frame are obtained. The one or more structured vectors are projected onto the space of circulant matrices. One or more classes of matrices associated with reference signals are outputted. | 09-18-2008 |
20080232235 | SYSTEMS AND METHODS FOR REDUCING PEAK TO AVERAGE CROSS-CORRELATION FOR SEQUENCES DESIGNED BY ALTERNATING PROJECTIONS - A method for using a numerical method to design reference signals for multiple input multiple output (MIMO) systems is described. An input multiple input multiple output signal is determined. A nearest tight frame to one or more given structured vectors is obtained. One or more structured vectors from the nearest tight frame are obtained. Orthogonal subsets are computed for a plurality of sequences, wherein each of the subsets is replaced with a matrix that comprises a function of one or more elements in each of the plurality of sequences and an identity matrix associated with the one or more elements. The one or more structured vectors are projected onto the space of circulant matrices. One or more classes of matrices associated with reference signals are outputted. | 09-25-2008 |
20080232486 | SYSTEMS AND METHODS FOR EXTENDING ZADOFF-CHU SEQUENCES TO A NON-PRIME NUMBER LENGTH TO MINIMIZE AVERAGE CORRELATION - A method for mapping a reference signal is described. A reference signal with a first length is provided. A sequence with a second length is selected, wherein the second length is a prime number. The sequence is extended to a third length using an extension that is uniformly distributed over zero to 2π. | 09-25-2008 |
20080267119 | SYSTEMS AND METHODS FOR ASSIGNING REFERENCE SIGNALS USING A GENETIC ALGORITHM - A method for assigning reference signal sequences for communication devices using a genetic algorithm is described. Reference signal sequences are assigned to each cell within a plurality of cells. A fitness function for each reference signal sequence is computed. The fitness function describes the effectiveness of the assignment. A first group of cells is selected to exchange their corresponding assignment information with assignment information corresponding to a second group of cells. The reference signal is assigned to a communications device within the area of one of the plurality of cells. | 10-30-2008 |
20080310383 | SYSTEMS AND METHODS FOR DESIGNING A SEQUENCE FOR CODE MODULATION OF DATA AND CHANNEL ESTIMATION - A method for using a numerical method to design a sequence for code modulating data is described. An input multiple input multiple output signal is determined. A nearest tight frame to one or more given structured vectors is obtained. One or more structured vectors is obtained from the nearest tight frame. The one or more structured vectors is projected onto the space of circulant matrices. One or more classes of matrices that indicates the design of the sequence is outputted. Data is code modulated using the designed sequence. | 12-18-2008 |
20080310539 | SYSTEMS AND METHODS FOR GENERATING AN ORTHOGONAL SIGNAL FROM SEQUENCES THAT ARE NOT MULTIPLES OF 2 - A method for generating orthogonal signals is described. A sequence is chosen. A determination is made if the chosen sequence is orthogonal. The sequence is converted from a time domain to a frequency domain if the sequence is not orthogonal. A determination is made if the length of the sequence is a multiple of a first quantity. An Inverse Fast Fourier Transform that is a multiple of the length of the sequence is chosen if the length of the sequence is not a multiple of the first quantity. | 12-18-2008 |
20090067318 | SYSTEMS AND METHODS FOR DESIGNING A REFERENCE SIGNAL TO BE TRANSMITTED IN A MULTIPLEXED CELLULAR SYSTEM - A method for designing a reference signal to be transmitted in a multiplexed cellular system is described. A first set of matrices that comprises a plurality of matrices is selected. An optimal partition of the first set of matrices is determined. A third matrix is formed. The third matrix represents a cross-correlation of a second matrix and each of the plurality of first matrices. A minimum corresponding to the first set of matrices is set. The second matrix is updated using the minimum corresponding to the first set of matrices. Each column of the second matrix is scaled by a first value. | 03-12-2009 |
20090110034 | SYSTEMS AND METHODS FOR GENERATING SEQUENCES THAT ARE NEAREST TO A SET OF SEQUENCES WITH MINIMUM AVERAGE CROSS-CORRELATION - A method for generating sequences that are nearest to a set of sequences with minimum average cross-correlation is described. Each element of a set of sequences is projected to a nearest constellation point. The set of sequences is converted into a time domain representation. An inverse discrete Fourier Transform (IDFT) is performed on the set of sequences. A cubic metric of each sequence of the set of sequences is evaluated. A sequence is removed from the set if the cubic metric exceeds a threshold. A minimum maximum cross-correlation is obtained for the set of sequences. | 04-30-2009 |
20090111480 | SYSTEMS AND METHODS FOR TRANSMITTING CONTROL INFORMATION VIA A CONTROL SIGNALING CHANNEL - A method for transmitting control information may include providing formatting rules that define a format for transmission of the control information to a base station via a control signaling channel. The control information may include a channel quality indicator (CQI), an acknowledgement/non-acknowledgement (ACK/NACK), a pre-coding matrix indicator (PMI), and rank information. The method may also include providing combination rules as part of the formatting rules. The combination rules may define how the CQI, the ACK/NACK, the PMI, and the rank information are combined for transmission on the control signaling channel. The method may also include transmitting the control information to the base station via the control signaling channel in accordance with the defined formatting rules. | 04-30-2009 |
20090268843 | SYSTEMS AND METHODS FOR PROVIDING UNEQUAL MESSAGE PROTECTION - Input data may be coded in accordance with a coding method that allows for either coded data or messages to be transmitted with pre-determined, but unequal reliability over a communication channel. The coding method may allow the messages to be transmitted with higher reliability than the coded data. Messages may be transmitted when they are available. Otherwise, the coded data may be transmitted. | 10-29-2009 |
20100022184 | SYSTEMS AND METHODS FOR SELECTIVE RELAYING IN WIRELESS NETWORKS - A method for selective transmission by a relay node in a wireless communications system is described. A signal is received. Channel quality information is received. A threshold value is determined. The channel quality information is compared to the threshold value. The signal is transmitted if the channel quality information is above the threshold value. | 01-28-2010 |
20100097922 | SYSTEMS AND METHODS FOR GENERATING SEQUENCES THAT ARE NEAREST TO A SET OF SEQUENCES WITH MINIMUM AVERAGE CROSS-CORRELATION - A method for generating sequences that are nearest to a set of sequences with minimum average cross-correlation is described. Each element of a set of sequences is projected to a nearest constellation point. The set of sequences is converted into a time domain representation. An inverse discrete Fourier Transform (IDFT) is performed on the set of sequences. A cubic metric of each sequence of the set of sequences is evaluated. A sequence is removed from the set if the cubic metric exceeds a threshold. A minimum maximum cross-correlation is obtained for the set of sequences. | 04-22-2010 |
20100172439 | SYSTEMS AND METHODS FOR DESIGNING A SEQUENCE FOR CODE MODULATION OF DATA AND CHANNEL ESTIMATION - A method for using a numerical method to design a sequence for code modulating data is described. An input multiple input multiple output signal is determined. A nearest tight frame to one or more given structured vectors is obtained. One or more structured vectors is obtained from the nearest tight frame. The one or more structured vectors is projected onto the space of circulant matrices. One or more classes of matrices that indicates the design of the sequence is outputted. Data is code modulated using the designed sequence. | 07-08-2010 |
20100177834 | SYSTEMS AND METHODS FOR IMPROVING REFERENCE SIGNALS FOR SPATIALLY MULTIPLEXED CELLULAR SYSTEMS - A method for using a numerical method to design reference signals for multiple input multiple output (MIMO) systems is described. An input multiple input multiple output signal is determined. A nearest tight frame to one or more given structured vectors is obtained. One or more structured vectors from the nearest tight frame are obtained. The one or more structured vectors are projected onto the space of circulant matrices. One or more classes of matrices associated with reference signals are outputted. | 07-15-2010 |
20100235709 | SYSTEMS AND METHODS FOR PROVIDING UNEQUAL ERROR PROTECTION CODE DESIGN FROM PROBABILISTICALLY FIXED COMPOSITION CODES - A method of encoding that uses standard codecs such as linear encoders and decoders for encoding and decoding data with different levels of robustness to errors is described. In one configuration, multiple encoders may be utilized, and one of the encoders may use a standard encoder such as a turbo code followed by a nonlinearity that creates an unequal distribution of ones and zeros in a binary representation of the code. In another configuration, a coder may be utilized that represents message outputs as “channels” that create state transitions (or symbol errors) in a data forward error correction coder. | 09-16-2010 |
20100290546 | SYSTEMS AND METHODS FOR DESIGNING A REFERENCE SIGNAL TO BE TRANSMITTED IN A MULTIPLEXED CELLULAR SYSTEM - A method of the present invention for designing a reference signal is a method for designing a reference signal, including: setting a first set of matrices by combining a plurality of first matrices each including a plurality of sequences; dividing the first set of matrices into a plurality of subsets each including at least one first matrix, and selecting at least one sequence from each of the plurality of subsets; and combining the selected sequences so as to generate a second matrix. | 11-18-2010 |
20100322185 | SYSTEMS AND METHODS FOR COMPONENT CARRIER SELECTION IN A WIRELESS COMMUNICATION SYSTEM - The present disclosure relates to component carrier (CC) selection in a wireless communication system. A user equipment (UE) that is in idle mode may receive a reference signal (RS) from an evolved Node B (eNB), obtain signal quality measurements with respect to the RS, and switch to a new CC based on the signal quality measurements. For a UE that is in connected mode, an eNB may obtain uplink channel condition information corresponding to uplink CCs, obtain downlink channel condition information corresponding to downlink CCs, and select a CC pair for the UE to use based on the uplink channel condition information and the downlink channel condition information. | 12-23-2010 |
20100323753 | SYSTEMS AND METHODS FOR PROVIDING A REDUCED POWER AMPLIFIER TRANSMISSION MODE - A user equipment (UE) that supports multiple antenna transmission via multiple power amplifiers may operate in a reduced power amplifier (PA) mode. When operating in the reduced PA mode, a subset of the UE's power amplifiers are used to transmit uplink signals. A UE may send a preference signal to an e-Node B to request that the UE operate in the reduced PA mode. | 12-23-2010 |
20110080880 | TRANSMISSION DIVERSITY SCHEME ON PHYSICAL UPLINK CONTROL CHANNEL (PUCCH) WITH ACK/NACK DIFFERENTIATION - A method for transmitting uplink control information (UCI) using a physical uplink control channel (PUCCH) transmit diversity scheme is described. A UCI is coded with a Forward Error Correction code to obtain a coded UCI. The coded UCI is mapped to quadrature phase shift keying (QPSK) symbols to obtain a mapped coded UCI. A phase shift pattern is selected. A phase shift from the phase shift pattern is applied to the mapped coded UCI based on an acknowledge/negative-acknowledge (ACK/NACK) to obtain a phase shifted mapped coded UCI. The mapped coded UCI is sent using a PUCCH resource on a first antenna. The phase shifted mapped coded UCI is sent using a PUCCH resource on a second antenna. | 04-07-2011 |
20110080903 | CODING A CONTROL MESSAGE WITH DETERMINED DATA CODE BLOCK REPETITION - A method for coding control data with user data repetition is disclosed. Bits in user data may be removed. Bits in control data may be repeated to increase a number of bits in the control data. A number of bits in the user data that is the same as the number of bits in the control data may be copied. The copied user data bits may be added to the control data. The user data and the control data may be multiplexed. | 04-07-2011 |
20110081875 | ANTENNA PORT MODE AND TRANSMISSION MODE TRANSITIONS - A wireless communication device may autonomously transition from a multiple antenna port mode to a single antenna port mode. The wireless communication device may implicitly notify a base station about the autonomous transition from the multiple antenna port mode to the single antenna port mode. The base station may reallocate resources that were previously allocated to the wireless communication device but that are no longer being used by the wireless communication device. In some cases, the base station may configure the wireless communication device's antenna port mode via radio resource control signaling. | 04-07-2011 |
20110243103 | TRANSMITTING CONTROL DATA AND USER DATA ON A PHYSICAL UPLINK CHANNEL - A method for transmission of control data and user data on a Physical Uplink Channel (PUC) is disclosed. An instruction from a base station to use an uplink control channel and an uplink shared channel to transmit uplink data is received. Control data and user data on the uplink control channel and the uplink shared channel is transmitted. | 10-06-2011 |
20110246840 | TRANSMISSION OF ACKNOWLEDGEMENT AND NEGATIVE ACKNOWLEDGEMENT IN A WIRELESS COMMUNICATION SYSTEM - A communication device configured for transmission of Acknowledgement and Negative Acknowledgement (ACK/NACK) is described. The communication device includes a processor and instructions stored in memory. The communication device determines one or more thresholds based on a size of one or more code words and generates a compressed ACK/NACK sequence. The compressed ACK/NACK sequence identifies one or more correctly received code words and one or more incorrectly received code words if the number of incorrectly received code words is less than the threshold. If the number of incorrectly received code words is greater than the threshold, the compressed ACK/NACK sequence indicates that all of the one or more code words were incorrectly received. | 10-06-2011 |
20110269489 | ASSIGNING AND COORDINATING UPLINK REFERENCE SIGNALS FOR COOPERATIVE COMMUNICATION - A method for assigning and coordinating uplink reference signals for cooperative communication is disclosed. Data about an assigned uplink reference signal sequence used by a wireless communication device is received at a non-serving base station. An uplink reference signal estimate is determined based on the data. The uplink reference signal estimate is used to coherently demodulate a signal received from the wireless communication device or is used to estimate an uplink channel between the non-serving base station and the wireless communication device. | 11-03-2011 |
20110310731 | CONTROLLING NETWORK RESOURCE USAGE OF MACHINE TYPE COMMUNICATION (MTC) DEVICES - A method for controlling network resource usage of a machine type communication (MTC) device is described. A request for network resources is received from an MTC application. A notification of a status of the MTC application is sent to a core network (CN). A set of commands is received from the CN. The commands as instructed by the CN are performed. | 12-22-2011 |
20110310853 | SELECTING A CODEWORD AND DETERMINING A SYMBOL LENGTH FOR UPLINK CONTROL INFORMATION - A wireless communication device configured for selecting a codeword and determining a symbol length for uplink control information is described. The wireless communication device includes a processor and instructions stored in memory. The wireless communication device establishes communication with a base station, receives downlink control information from the base station and receives base station information. The wireless communication device generates uplink control information based on the base station information. The wireless communication device also determines a number of symbols for the uplink control information for a plurality of layers and sends the uplink control information. | 12-22-2011 |
20110310855 | UPLINK CONTROL INFORMATION (UCI) MULTIPLEXING ON THE PHYSICAL UPLINK SHARED CHANNEL (PUSCH) - A method for multiplexing uplink control information (UCI) on a physical uplink shared channel (PUSCH) is described. Control data is coded with user data repetition. The coded control data is mapped to a PUSCH resource. A data block base for the coded control data is also mapped in the PUSCH resource. The UCI may include channel quality indicators (CQI)/precoding matrix indicators (PMI), acknowledgement/negative-acknowledgement (ACK/NACK) and rank indicators (RI). | 12-22-2011 |
20120127869 | MULTIPLE CHANNEL STATE INFORMATION (CSI) REPORTING ON THE PHYSICAL UPLINK SHARED CHANNEL (PUSCH) WITH CARRIER AGGREGATION - A method for reporting uplink control information (UCI) by a user equipment (UE) is described. It is determined that multiple channel state information (CSI) reports are scheduled on a physical uplink shared channel (PUSCH). An aggregated CSI report is generated using two or more of the multiple CSI reports. The aggregated CSI report is transmitted on the PUSCH. | 05-24-2012 |
20120140708 | PRIORITIZING MULTIPLE CHANNEL STATE INFORMATION (CSI) REPORTING WITH CARRIER AGGREGATION - A method for reporting uplink control information (UCI) on a user equipment (UE) is described. A collision of multiple channel state information (CSI) reports corresponding to multiple component carriers (CCs) that are scheduled to be reported in the same subframe is detected. A highest priority CSI report of the multiple CSI reports is determined using a prioritization scheme. The highest priority CSI report is transmitted. | 06-07-2012 |
20120275362 | DEVICES FOR INTERFERENCE CONTROL SIGNALING - A wireless communication device configured for interference control signaling is described. The wireless communication device includes a processor and instructions stored in memory that is in electronic communication with the processor. The wireless communication device mitigates interference between a User Equipment (UE) included in the wireless communication device and another communication device included in the wireless communication device based on interference control signaling. | 11-01-2012 |
20120282875 | DISABLING TRANSCEIVERS WHILE SERVICING EMERGENCY MESSAGES - A method for servicing emergency messages by a user equipment (UE) is described. High priority communication (HPC) activity is detected on a Long Term Evolution (LTE) transceiver. Adjustments to be made to one or more transceivers to account for the HPC activity are determined. Settings of the one or more transceivers are adjusted to account for the HPC activity. An end of the HPC activity on the LTE transceiver is detected. The settings of the one or more transceivers are adjusted to account for the end of the HPC activity. | 11-08-2012 |
20130039283 | QUANTIZING RELATIVE PHASE AND RELATIVE AMPLITUDE FOR COORDINATED MULTIPOINT (COMP) TRANSMISSIONS - A method for quantizing a relative phase and a relative amplitude is described. A received symbol is obtained. A relative phase is determined from the received symbol. A relative amplitude is also determined from the received symbol. A quantized relative phase is obtained for the relative phase. A quantized relative amplitude is obtained for the relative amplitude. | 02-14-2013 |
20130051288 | USER EQUIPMENT CAPABILITY SIGNALING - A user equipment (UE) configured for signaling UE capability is described. The UE includes a processor and instructions stored in memory that is in electronic communication with the processor. The UE sends an indicator regarding whether the UE can support different time division duplex (TDD) configurations on different bands for a band combination. The UE also sends an indicator regarding whether the UE can support concurrent transmission and reception on different bands for the band combination. The UE additionally sends an indicator regarding whether the UE can support different uplink timing adjustments for the band combination. | 02-28-2013 |
20130114583 | IN-DEVICE COEXISTENCE INTERFERENCE AVOIDANCE (IDC) - A method for in-device coexistence interference avoidance (IDC) is described. An IDC assistance information message is received from a wireless communication device. Long Term Evolution (LTE) uplink inactivity periods for the wireless communication device are aligned with Wi-Fi beacon periods. An IDC configuration message is generated. The IDC configuration message is sent to the wireless communication device. | 05-09-2013 |
20130155898 | DEVICES FOR REPORTING UPLINK INFORMATION - A user equipment (UE) for reporting information is described. The UE includes a processor and instructions stored in memory that is in electronic communication with the processor. The UE selects a reference cell having a reference uplink-downlink (UL-DL) configuration. The UE also selects a first uplink subframe from the reference cell. The UE further selects a first subframe set from a first cell having a first UL-DL configuration. The first UL-DL configuration is different than the reference UL-DL configuration. The UE additionally determines a first set of associations between the first subframe set and the first uplink subframe. The UE further aggregates information corresponding to the reference cell and information corresponding to the first cell based on the first set of associations to produce aggregated information. The UE also reports the aggregated information on an uplink reporting cell. | 06-20-2013 |
20130223356 | ALLOCATING AND DETERMINING RESOURCES FOR A DEVICE-TO-DEVICE LINK - An evolved Node B (eNB) for allocating resources for a device-to-device (D2D) link between User Equipments (UEs) is described. The eNB includes a processor and instructions stored in memory that is in electronic communication with the processor. The eNB allocates resources for a D2D link by using at least one Physical Downlink Control Channel (PDCCH). The eNB further indicates a D2D link direction. | 08-29-2013 |
20130242799 | DEVICES FOR SENDING AND RECEIVING HYBRID AUTOMATIC REPEAT REQUEST INFORMATION FOR CARRIER AGGREGATION - A User Equipment (UE) for sending Hybrid Automatic Repeat Request (HARQ) information is described. The UE includes a processor and instructions stored in memory that is in electronic communication with the processor. The UE determines a primary cell (PCell) configuration. The UE also determines a secondary cell (SCell) configuration. The UE further determines whether the PCell configuration specifies uplink (UL) and the SCell configuration specifies downlink (DL) for a subframe or whether the PCell configuration specifies DL and the SCell configuration specifies DL for the subframe. The UE additionally determines a HARQ Acknowledgement (HARQ-ACK) reporting subframe based on the PCell configuration if the PCell configuration specifies DL and the SCell configuration specifies DL for the subframe. The UE also sends SCell Physical Downlink Shared Channel (PDSCH) HARQ-ACK information in the HARQ-ACK reporting subframe. | 09-19-2013 |
20140031028 | PROXIMITY SERVICE DISCOVERY USING A LICENSED FREQUENCY SPECTRUM - Methods, systems, and devices provide improved proximity services. In one aspect, a base station includes an information generating module and an information transmission module. The information generating module generates control information for causing a mobile device to initiate a discovery signal transmission procedure. The discovery signal transmission procedure allows the mobile device to be discovered. The information transmission module transmits the control information to the mobile device. In another aspect, a mobile device includes an information receiving module, a control module, and a signal transmission module. The information receiving module receives control information. The control module initiates a discovery signal transmission procedure for proximity services responsive to the information receiving module receiving the control information. The discovery signal transmission procedure includes generating a discovery signal allowing the mobile device to be discovered. The signal transmission module broadcasts the discovery signal. | 01-30-2014 |