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Interference Cancellation patents

      

This page is updated frequently with new Interference Cancellation-related patent applications.




 Remote radio head unit system with wideband power amplifier and method patent thumbnailRemote radio head unit system with wideband power amplifier and method
A remote radio head unit (rru) system for multiple operating frequency bands, multi-channels, driven by a single or more wide band power amplifiers. More specifically, the present invention enables multiple-bands rru to use fewer power amplifiers in order to reduce size and cost of the multi-band rru.
Dali Systems Co. Ltd.


 Interference cancellation patent thumbnailInterference cancellation
A method implemented in an access point (ap) used in a wireless communications system including a first uplink (ul) client device, a second ul client device, and a first downlink (dl) client device is disclosed. The method comprises: receiving, from the first dl client device, first composite channel matrix m1 comprising a first channel matrix and a second channel matrix, wherein the first dl client device estimates the first channel matrix and the second channel matrix.
Nec Laboratories America, Inc.


 Interference cancellation patent thumbnailInterference cancellation
A method implemented in a wireless communications system including a first uplink (ul) client device, a second ul client device, a first downlink (dl) client device, and an access point (ap) is disclosed. The method comprises the following steps in this order: a) determining interference alignment (ia) solution between the first and second ul client devices and the first device; and b) determining, according to the ia solution, receive filter u0 for the ap and precoder v0 for the ap to improve a ul stream rate and a dl stream rate.
Nec Laboratories America, Inc.


 Wireless communications systems and methods patent thumbnailWireless communications systems and methods
Methods and systems that enhance interference cancellation in communication channels are described. Specialized time domain training sequences and simple cross correlation are used to obtain a channel estimate for use in stacked carrier beamforming and ofdm based spatial beamforming.
The Directv Group, Inc.


 Interference cancellation patent thumbnailInterference cancellation
A method implemented in an access point (ap) having n antennas used in a wireless communications system including two first client devices each of which has m antennas and two second client devices each of which has n antennas, where m and n are even is disclosed. The method comprises: performing interference alignment (ia) in common vector spaces; and delivering m+n streams.
Nec Laboratories America, Inc.


 Methods and systems for processing received signals for a wireless network receiver patent thumbnailMethods and systems for processing received signals for a wireless network receiver
There is provided systems and methods for mitigating foreign interference by complementing a receiver of a wireless network, comprising: using antennas for reception of desired signals and interference signals; determining the presence of an interference signal originating from at least one foreign transmitting source in the received signals, and for determining a termination of the interference signal; determining the presence of a desired signal originating from the wireless communication network in the received signals; calculating a suitable combination of the received signals, wherein the effect induced by the interference signal is reduced and the impact of an interference cancellation on the desired signals is reduced; and providing the suitable combination to a receiver of a wireless communication network; wherein the method is performed complementary to the receiver of the wireless network and the antennas.. .
Ubiqam Ltd


 Systems and methods for calibration and optimization of frequency modulated continuous wave radar altimeters using adjustable self-interference cancellation patent thumbnailSystems and methods for calibration and optimization of frequency modulated continuous wave radar altimeters using adjustable self-interference cancellation
Systems and methods for calibrating and optimizing frequency modulated continuous wave radar altimeters using adjustable self-interference cancellation are disclosed. In at least one embodiment, a radar altimeter system comprises: a local oscillator delay line including a variable delay circuit configured to output a delayed signal, a transmitter coupled to the local oscillator delay line and configured to output a transmitter signal, a transceiver circulator coupled to an antenna and coupled to the transmitter, and a frequency mixer coupled to the delay line and coupled to the transceiver circulator.
Honeywell International Inc.


 User equipment and methods for csi enhancements using interference cancellation and suppression receivers patent thumbnailUser equipment and methods for csi enhancements using interference cancellation and suppression receivers
In providing feedback to an enb in an lte network for downlink scheduling and link adaptation, a ue issues a channel state information (csi) report that includes a channel quality index (cqi). The reported cqi should include all ue receiver processing capabilities, including naics (network assisted interference cancellation and suppression) capability to cancel and suppress interference.
Intel Corporation


 Methods and devices for interference variance estimation and interference cancellation patent thumbnailMethods and devices for interference variance estimation and interference cancellation
An interference variance estimation method includes receiving a composite sample comprising a sample of a first ofdm transmission scheme interfered by out-of-band interference of a second ofdm transmission scheme; determining for each of the resource elements of the first transmission scheme a power estimate of the out-of-band interference; and filtering the power estimates over subcarriers corresponding to a same symbol, wherein weights of the filtering are based on a correlation property of the power estimates with respect to the subcarriers. An interference cancellation method includes: receiving the composite sample; determining a first estimate of the out-of-band interference with respect to non-data bearing subcarriers; determining a second estimate of the out-of-band interference with respect to data bearing subcarriers based on the first estimate; and cancelling the out-of-band interference based on the composite signal and the second estimate..
Intel Ip Corporation


 System and  ue-specific offloading patent thumbnailSystem and ue-specific offloading
An apparatus is configured to perform a method for user equipment (ue) offloading. The method includes receiving, at a network controller, a measurement report from a ue, the measurement report radio link measurement quantities of a serving cell and one or more candidate serving cells, the measurement quantities measured after interference cancellation or suppression.
Futurewei Technologies, Inc.


Method for transmitting network support information for removing interference and serving cell base station

One embodiment of the present specification provides a method for transmitting network assistance information in one serving cell in order to perform interference cancellation of a terminal. The method may be performed by a serving cell and may comprise: determining whether a traffic load is above or below a first threshold; determining whether a traffic load of a neighbor cell is above or below a second threshold; determining a target for which the interference cancellation is to be performed by the terminal, on the basis of the determined result for the traffic load of the serving cell and the determined result for the traffic load of the neighbor cell; and transmitting to the terminal the network assistance information including the information regarding the determined target..
Lg Electronics Inc.

A method and a device for predicting the performance of a communication system over a transmission channel

One embodiment described herein relates to a method of predicting the performance of a communication system on a transmission channel. The system may comprise a transmitter suitable for applying bit interleaved coded modulation to information bits issued by a source to generate coded symbols, these coded symbols being transmitted by the transmitter over the transmission channel.
Orange

Method and receiving signal in wireless communication system

Disclosed is a wireless communication system. A method for receiving a signal using naics (network assisted interference cancellation and suppression) in a wireless access system supporting eimta (enhanced interference management and traffic adaptation) includes receiving first information on uplink and downlink configuration of a neighbor cell and second information related with a flexible subframe of the neighbor cell, and receiving the signal based on the first information and the second information..
Lg Electronics Inc.

Minimum mean squared error approach to interference cancellation and maximum likelihood decoding of space-time block codes

Block-encoded transmissions of a multi-antenna terminal unit are effectively detected in the presence of co-channel interfering transmissions when the base station has a plurality of antennas, and interference cancellation is combined with maximum likelihood decoding. More specifically, the signals received at the base station antennas are combined in a linear combination that relates to the channel coefficients between the various transmitting terminal units and the base antennas.
At&t Intellectual Property Ii, L.p.

Frequency and phase synchronization using full duplex radios over wireless mesh networks

An approach is disclosed for synchronization of frequency and/or phase in a full duplex network. The method may comprise sending a timing beacon over a single full duplex radio channel from a timing master to a timing slave; receiving the timing beacon over the single full duplex radio channel at the timing slave; sending a retransmitted beacon over the single full duplex radio channel from the timing slave to the timing master; and sending a delta of the timing beacon and the retransmitted beacon from the timing master to the timing slave.
Parallel Wireless, Inc.

Interference cancellation in a cellular communication network

A technique for cancelling inter-cell or intra-cell interference in a cellular communication network is described. A method implementation of that technique performed in an interfered terminal comprises receiving a signal, wherein the received signal comprises an interfering signal destined to at least one further terminal different from the interfered terminal.
Telefonaktiebolaget L M Ericsson (publ)

Method for interference cancellation with low-power subframes in heterogeneous networks

Embodiments include methods for providing information enabling a communication device operating in a hetnet comprised of an aggressor cell and one or more overlaid victim cells utilizing a common frequency spectrum, to at least partially cancel an interfering signal transmitted from the aggressor cell in order to more accurately measure one or more signals transmitted from a victim cell. Embodiments include methods for configuring the aggressor cell with information related to overlaid victim cells in the aggressor's coverage area, and methods for configuring a victim cell with information related to the aggressor's interference within the victim's extended coverage area.

Method and cross polarization and cross satellite interference cancellation

A method and apparatus in which a tap-weight computer (twc) calculates a tap-weight vector (twv). The twv is coupled to a register in each of a plurality of adaptive filter modules.
Entropic Communications, Llc

Power offset signaling techniques for network-assisted interference cancellation and suppression (naics) receivers

Power offset signaling techniques for network-assisted interference cancellation and suppression (naics) receivers are described. In one embodiment, for example, user equipment (ue) may comprise at least one radio frequency (rf) transceiver, at least one rf antenna, and logic, at least a portion of which is in hardware, the logic to receive a radio resource control (rrc) connection control message comprising a radioresourceconfigdedicated field and perform a radio resource configuration procedure in response to receipt of the rrc connection control message, the rrc connection control message to comprise network-assisted interference cancellation and suppression (naics) assistance information that identifies a power offset value for one or more transmissions to the ue over a physical downlink shared channel (pdsch) of a serving cell of the ue.
Intel Corporation

Full duplex reconfigurable antenna self-interference cancellation systems

Embodiments of full-duplex systems with reconfigurable antennas are described. In one embodiment, a full-duplex reconfigurable antenna transceiver includes a transmit chain, a receive chain, and a reconfigurable antenna having a plurality of reconfigurable modes.
Utah State University

Systems and methods for multi-rate digital self-interference cancellation

A system for multi-rate digital self-interference cancellation including a signal component generation system coupled to a digital transmit signal of a communication system that generates a set of signal components from the digital transmit signal; a multi-rate adaptive filter that transforms the set of signal components into a digital self-interference cancellation signal, according to a transform configuration, to form an interference-reduced receive signal; and a transform adaptor that dynamically sets the transform configuration in response to changes in the interference-reduced receive signal.. .
Kumu Networks, Inc.

Systems and methods for frequency-isolated self-interference cancellation

A system for frequency-isolated self-interference cancellation includes a transmit coupler, that samples an rf transmit signal to create a sampled rf transmit signal having a first rf carrier frequency, an rf self-interference canceller that transforms the sampled rf transmit signal to an rf self-interference cancellation signal, a receive coupler, that combines the rf self-interference cancellation signal with an rf receive signal to form a reduced-interference receive signal, and a frequency shifter.. .
Kumu Networks, Inc.

Adaptive interference cancellation cancelling side lobe between neighboring cells

An adaptive interference cancellation apparatus for cancelling a side lobe between neighboring cells installed in a repeater and capable of improving quality of a communication signal and preventing frequent handover by maintaining a serving base station signal among repeater signals and cancelling an interference signal from a neighboring cell is provided. The adaptive interference cancellation apparatus for a side lobe between neighboring cells, which is installed in a mobile communication repeater system comprising an omni-directional antenna, includes: three directional antennas installed around the omni-directional antenna; an output signal selector configured to select and output two of three directional antenna incident signals; and an adaptive noise canceller configured to adaptively filter the two directional antenna incident signals output from the output signal selector, estimate a noise reference signal, and extract a serving base station signal by subtracting the estimated noise reference signal from an omni-directional antenna incident signal..
Innowireless Co., Ltd.

Communication system having cross polarization interference cancellation (xpic)

An all outdoor unit communication system, for performing cross polarization interference cancellation, is provided. The system includes a first outdoor unit (odu) configured to receive a first directionally polarized signal, a first rf module configured to convert the first directionally polarized signal into a first in-phase (i) component and a first quadrature (q) component, and a first modem configured to up-convert the first i and q components from baseband into a first directionally polarized intermediate frequency (if) signal.
Broadcom Corporation

Non-orthogonal multiple access and interference cancellation

Methods, systems, and devices are described for hierarchical modulation and interference cancellation in wireless communications systems. Various deployment scenarios may be supported that may provide communications on both a base modulation layer as well as in an enhancement modulation layer that is modulated on the base modulation layer, thus providing concurrent data streams that may be provided to the same or different user equipments.
Qualcomm Incorporated

Method and efficient utilization of resources for interference cancellation and suppression in wireless communication systems

The present invention relates to a method and an apparatus for transmitting interference related control information in order to improve reception performance of a ue which receives a downlink signal, in a cellular mobile communication system based on an long term evolution-advanced (lte-a) system. A communication method of a ue according to an embodiment of the present invention includes receiving information on a resource allocation unit of an interference signal from an enb; performing blind detection using information on the resource allocation unit of the interference signal; performing error-correcting coding using a transmission parameter for interference and a result obtained by the blind detection; and decoding reception data.
Samsung Electronics Co., Ltd.

Full-duplex self-interference cancellation systems

Embodiments of full-duplex self-interference cancellation systems are described. In one embodiment, a full-duplex transceiver includes a digital signal processor that processes digital signals, a transmit chain that receives a first digital baseband signal from the digital signal processor and converts it to a first rf signal, a receive chain that receives a second rf signal and converts the second rf signal to a second digital baseband signal, and an auxiliary receive chain that receives a portion of the first rf signal and converts it to an auxiliary digital baseband signal.
The Regents Of The University Of California

Methods and devices for reducing interference in heterogeneous communication networks based on inter-cell interference coordination

Devices and methods for reducing interference in a communication network including a first node and a first node coverage area, a second closed subscriber group (csg) node located within the first node coverage area, and one or more user equipment (ue) devices located within the first node coverage area are provided. In one embodiment, a method includes receiving link quality measurement information from the one or more ue devices and determining if a link quality value for a ue device is below a predetermined link quality threshold value and is caused by the second csg node.
Telefonaktiebolaget L M Ericsson (publ)

Physical layer signaling to user equipment in a wireless communication system

A method of wireless communication includes receiving physical layer signaling from a serving enodeb in a wireless network. Interference estimation, interference cancellation and/or spatial equalization of user equipment is controlled in accordance with the received signaling..
Qualcomm Incorporated

Interference cancellation using interference magnitude and phase components

A communication device can independently determine an interference magnitude component and an interference phase component for interference cancellation. The interference magnitude component may be estimated based, at least in part, on a magnitude polynomial expansion and a transmit signal of the communication device.
Qualcomm Incorporated

Local oscillator interference cancellation

Systems and methods for mitigating interference in a local oscillator (lo) signal generated by a phase-locked loop (pll) are disclosed. In one embodiment, a system includes a pll and an error compensation subsystem.
Telefonaktiebolaget L M Ericsson (publ)

Method of performing interference cancellation and apparatus therefor

A method of cancelling interference of a terminal is disclosed. The method includes receiving interference parameter configuration information including a transmission timing of interference parameter information indicating a restricted set of a plurality of interference parameters to be used by one or more interference base stations associated with the terminal and interference parameter release information including a transmission timing of an indicator indicating release of the interference parameter information, receiving the interference parameter information according to the interference parameter configuration information, performing interference cancellation using the received interference parameter information, attempting detection of the indicator according to the interference parameter release information, and performing the interference cancellation without the received interference parameter information or suspending the interference cancellation when the indicator is detected..

Interference cancellation method, system, device and ue

Examples of the present application provide an interference cancellation method, system, device and a ue. The interference cancellation method of a communication network including a plurality of user equipments (ues) and base stations (bss) includes: acquiring a signal to noise ratio (snr) and interference to noise ratio (inr) of a downlink signal detected by a first ue and a snr and inr of a downlink signal detected by a second ue, respectively through a first bs and a second bs; and notifying the first bs and the second bs of a transmission mode of associated ues, wherein the first ue is located in a cell served by the first bs, and the second ue is located in a cell served by the second bs..

Methods and adapting transmitter configuration for efficient concurrent transmission and radar detection through adaptive self-interference cancellation

Certain aspects of the present disclosure relate to adapting transmitter configuration for efficient concurrent primary user detection through adaptive self-interference cancellation. A wireless transmitting device may schedule a transmission in a shared spectrum.

Method and terminal for performing measurements in coverage extension area of small-scale cell when macro cell and small-scale cell coexist

The present specification provides a method for performing measurements, by a terminal, in a coverage extension area of a small-scale cell in a wireless communication system in which macro cell and the small-scale cell coexist. The method for performing measurements can include the steps of: receiving information about a first subframe on which measurements for the small-scale cell can be performed and information about a second subframe on which measurements for the macro cell can be performed; when an interference cancellation function is set, measuring reference signal received power (rsrp) and a received signal strength indicator (rssi) for the small-scale cell by driving the interference cancellation function on the first subframe; and measuring rsrp on the second subframe for the macro cell by driving the interference cancellation function and measuring the rssi for the macro cell without driving the interference cancellation function..

Sparse ordered iterative group decision feedback interference cancellation

Data can be received characterizing a first signal received on a plurality of antennas and comprising multiple transmission signals transmitted simultaneously on at least a same resource element in an orthogonal frequency-division multiple access (ofdm) communications system. A final estimate of the multiple transmission signals can be determined from at least the received data by iteratively estimating multiple transmission signals from the first signal and feeding back selected estimated multiple transmission signals, which satisfy a criterion, to cancel components of the first signal.

Method for reporting channel state information having interference cancellation capability reflected therein, and apparatus therefor

A method for reporting channel state information (csi) having interference cancellation capability reflected therein, and an apparatus therefor are disclosed. A method for reporting channel state information (csi) to which interference cancellation capability is reflected in a wireless communication system is performed by a terminal and includes receiving one or more csi process configurations including one or more csi resource sets from a serving cell, wherein the csi resource set is associated with a specific interference cell, detecting a dominant interference signal from a received signal and selecting a csi resource set corresponding to the dominant interference signal, calculating csi to which interference cancellation capability is reflected, using the selected csi resource set or interference hypothesis (ih) information corresponding to the selected csi resource set, and reporting the calculated csi to the serving cell through a csi process corresponding to the selected csi resource set or the ih information..

Method and receiving downlink data in wireless communication system

A method for receiving downlink data by a user equipment (ue) in a wireless communication system is provided. The method includes checking a transmission parameter related to data transmitted from an interfering cell, determining presence/absence of an interference signal based on the transmission parameter, determining whether to apply network assisted interference cancellation and suppression (naics) technology based on at least one of the transmission parameter or the presence/absence of the interference signal, and decoding the downlink data depending on whether to apply the naics technology..
Samsung Electronics Co., Ltd.

Interference cancellation receiving method and interference cancellation receiving terminal

One embodiment of the present specification provides an interference cancellation receiving method. According to the method, interference estimation support information can be received from a serving cell.
Lg Electronics Inc.

Channel estimation and interference cancellation for virtual mimo demodulation

A method and system for wireless communication in a wireless communication network. The wireless communication network has a first mobile terminal and a second mobile terminal arranged in virtual multiple input, multiple output (“v-mimo”) communication with a base station.
Apple Inc.

Systems and methods for near band interference cancellation

A method for self-interference canceller tuning for a near band radio includes receiving, in a first frequency band, an rf transmit signal of the near band radio; receiving, in a second frequency band, an rf receive signal of the near band radio; generating a self-interference cancellation signal from the rf transmit signal based on a set of configuration parameters; combining the self-interference cancellation signal with the rf receive signal to create a composite receive signal; and adapting the set of configuration parameters based on the composite receive signal.. .
Kumu Networks, Inc.

Method and system for blind interference cancellation in a wireless communication systems

Aspects of the present invention include methods, systems, and computer-readable medium for canceling interference in wireless communication. The method includes receiving wireless cdma communication signals using one or more antennas at least from a first entity via a first communication channel and a second entity via a second communication channel, determining a set of known characteristics associated with the first entity, the first set of characteristics comprising a first signal strength, a first synchronization information, and an first channel identification information, and determining an aggregate signal matrix based on signals received from at least the first entity and the second entity.
Shanghai Mobilepeak Semiconductor Co., Ltd.

Flash memory read error recovery with soft-decision decode

An apparatus comprising a memory and a controller. The memory may be configured to store data.
Seagate Technology Llc

Method and transmitting interference information for network assisted interference cancellation and suppression in wireless communication system

A method for transmitting interference related control information in order to improve a reception performance of a terminal that receives a downlink in a cellular mobile communication system based on the lte-a system includes receiving a higher layer control message including probability information of a modulation scheme for an interference signal, from a base station, and performing error-correcting coding using a probability value of a modulation scheme for an interference signal, which is included in the higher layer control message. A base station in a mobile communication system, the base station includes a controller configured to generate probability information of a modulation scheme for an interference signal, and transmit, to the terminal, a higher layer control message comprising the probability information of the modulation scheme for the interference signal..
Samsung Electronics Co., Ltd.

System and ue-specific offloading

An apparatus is configured to perform a method for user equipment (ue) offloading. The method includes receiving, at a network controller, a measurement report from a ue, the measurement report radio link measurement quantities of a serving cell and one or more candidate serving cells, the measurement quantities measured after interference cancellation or suppression.
Futurewei Technologies, Inc.

Joint analog and digital interference cancellation in wireless systems

An apparatus for joint analog and digital interference cancellation includes a receiver configured to receive an analog reference interfering signal on a reference path, and a sum of an analog interference signal and an analog signal of interest on an antenna path. An analog interference canceller may be configured to produce an analog partially interference-cancelled signal using the analog reference interfering signal and the sum of the analog interference signal and the analog signal of interest.
Trellisware Technologies, Inc.

Method and reporting channel state by reflecting interference cancellation performance

Disclosed is a method for reporting a channel state in a wireless communication system, the method performed by a terminal and including reporting channel state information (csi) to a base station (bs), transmitting csi correction information for correcting the reported csi, to the bs, and receiving a downlink channel scheduled based on the csi correction information, wherein the csi correction information indicates a change in channel state due to dynamic interference.. .
Lg Electronics Inc.

Idle mode operation in heterogeneous networks

An idle mode ue can rach to a cell different from the cell paging the ue. The ue can be allocated additional time to respond to all cells in the neighborhood to identify the cell in which to rach.
Qualcomm Incorporated

Systems and methods for hybrid self-interference cancellation

A system for hybrid self-interference cancellation includes a transmit coupler that samples an rf transmit signal, a rf self-interference canceller that transforms the sampled rf transmit signal to an rf self-interference cancellation signal, an if self-interference canceller that transforms a downconverted version of the rf transmit signal to an isrf self-interference cancellation signal, and a receive coupler that combines the rf and isrf self-interference cancellation signals with an rf receive signal.. .
Kumu Networks, Inc.

Method for reporting channel state information having reflected interference cancellation capability therein, and apparatus therefor

A method for reporting channel state information (csi) having reflected interference cancellation capability therein in a wireless communication system is performed by a terminal and includes receiving interference configuration information indicating a first group of cells corresponding to targets for which interference cancellation capability is reflected, and scheduling information of a serving cell, from the serving cell, receiving a specific sequence transmitted from a second group of cells, determining whether to reflect the interference cancellation capability for the first group of cells and the second group of cells, using the interference configuration information, the scheduling information or the specific sequence, and transmitting csi having reflected the interference cancellation capability therein, wherein the second group of cells correspond to candidate cells capable of reflecting the interference cancellation capability other than the indicated cells.. .
Lg Electronics Inc.

Interference cancellation

A transceiver for full-duplex communication. The transceiver comprises: a transmitter and a receiver.
Enmodus Limited

System and multiple-input and multiple-output (mimo) full-duplex precoding structures

Embodiments are provided to enable effective cancellation or reduction of the self-interference (si) introduced when applying full-duplex (fd) transmission to multiple-input-multiple-output (mimo) systems. A method embodiment includes forming, using a precoding matrix generated in accordance with channel conditions, a plurality of beams for a plurality of transmit signals and a plurality of self-interference cancellation signals corresponding to the plurality of transmit signals.
Huawei Technologies Canada Co., Ltd.

Interference cancellation in a spread spectrum communication system

A method and apparatus used to transmit and receive weighted data transmissions over a plurality of antennas using a plurality of different pilot signals. Different pilot signals are produced and a different pilot signal of the plurality of pilot signals is transmitted on each of a plurality of antennas.
Interdigital Technology Corporation

Systems and methods for phase noise mitigation

A system for phase noise mitigated communication including a primary transmitter that converts a digital transmit signal to an analog transmit signal, a primary receiver that receives an analog receive signal and converts the analog receive signal to a digital receive signal, an analog self-interference canceller that samples the analog transmit signal, generates an analog self-interference cancellation signal based on the analog transmit signal, and combines the analog self-interference cancellation signal with the analog receive signal and a digital self-interference canceller that samples the digital transmit signal, generates a digital self-interference cancellation signal based on the digital transmit signal, and combines the digital self-interference cancellation signal with the digital receive signal.. .
Kumu Networks, Inc.

Method and interference cancellation

A method and apparatus for performing interference cancellation is disclosed. The method includes receiving information about an interference configuration set related to characteristic of an interference signal, receiving an interference sequence signal indicating one interference configuration of the interference configuration set, and performing cancellation of the interference signal using the indicated interference configuration, wherein the interference sequence signal is received in at least a portion of a channel state information-interference measurement (csi-im) resource, and the interference sequence signal is received from an interference base station (bs) when the interference signal is scheduled to transmit and corresponds to the interference sequence signal..
Lg Electronics Inc.

Interference cancellation in tdd massive mimo wireless systems

Directed inter-cell interference experienced by the downlink of a massive mimo wireless communication network base station due to pilot contamination that occurs as a result of pilot signal reuse is significantly reduced by encoding signals to be transmitted over the downlink into robust signals. The robust signals along with corresponding beamforming vectors are transmitted over the downlink where the beamforming vectors are estimated by the base station using received fast fading pilot sequences.
Alcatel-lucent Usa Inc.

Interference cancellation scheme using constellation diagram

Provided is an interference cancellation method by a user equipment (ue) in a cellular communication system. The method includes receiving a signal including a desired signal and an interference signal from at least one base station; determining a universal constellation diagram based on at least one of a transmission parameter of the desired signal and a transmission parameter of the interference signal; blindly detecting an additional transmission parameter of the interference signal using the determined universal constellation diagram; and cancelling the interference signal from the received signal using the detected additional transmission parameter..
Samsung Electronics Co., Ltd.

Method for cancelling a data transmission of a neighboring cell

A method of interference cancellation is proposed. A serving base station transmits a first configuration information to a ue, the first configuration information is related to a desired signal of a data transmission from a serving cell to the ue.
Mediatek Inc.

Method for cancelling a data transmission of a neighboring cell

A method of interference cancellation is proposed. A ue obtains configuration information of a data transmission from a neighboring cell via an interference channel in a mobile communication network.
Mediatek Inc.

Method and interference cancellation

Disclosed are a method and apparatus for interference cancellation. A method for receiving information for interference cancellation in a wireless communication system, according to an embodiment of the present invention, is performed by a terminal and includes receiving information on an interference configuration set related to characteristics of an interference signal, from a serving base station (bs); receiving an indicator indicating one interference configuration of the interference configuration set from an interfering bs; and performing cancellation of the interference signal using the indicated interference configuration.
Lg Electronics Inc.

Interference cancellation

A radio base station and a method therein for scheduling an uplink radio resource to a first user equipment in a wireless communication system which employs cdma are provided. The method comprises measuring an interference cancellation, ic, gain for each user equipment in a set of user equipments currently being served by the radio base station.
Telefonaktiebolaget L M Ericsson (publ)

Receiving interference cancellation, and terminal

One embodiment of the present specification discloses a receiving method. The receiving method comprises the steps of: cancelling interference caused by a cell-specific reference signal (crs) of a neighboring cell from a bit string received from a serving cell; determining weight to be applied to the bit string; applying the determined weight to the bit string; and decoding the bit string to which the weight is applied.
Lg Electronics Inc.

Method and cancelling interference

A method for cancelling interference performed by a terminal in a wireless communication system is disclosed. The method includes transmitting an interference information request and interference cancellation (ic) scheme information to a serving base station (bs), receiving from the serving bs interference information determined according to the interference information request and the ic scheme information, and cancelling interference using the interference information.
Lg Electronics Inc.

Signal processing method, apparatus, and system

Embodiments of the present invention disclose a signal processing method, apparatus, and system, where the method includes: receiving a downlink signal that carries an uplink signal; and performing first interference cancellation on the uplink signal by using an estimated self-interference signal, so that a remaining amount of interference of the uplink signal is less than a first interference threshold, thereby minimizing out-of-band interference of the uplink signal on the downlink signal without using a plurality of radio frequency front-ends or without using a duplexer on a same radio frequency front-end. In the embodiments of the present invention, no duplexer is adopted, and therefore, difficulty and a cost of base station and system layout can be reduced, and extra energy consumption of a mobile terminal can also be reduced..
Huawei Technologies Co., Ltd.

Opportunistic active interference cancellation using rx diversity antenna

A method of performing interference cancellation (ic) in a wireless communication device having a receiver comprising at least a primary receiver chain and a diversity receiver chain includes determining an interference level of a transmitted signal on the receiver; determining whether the interference level is within a predetermined range; selecting a first mode of operation if the interference level is within a predetermined range; and selecting a second mode of operation if the interference level is not within the predetermined range. The first mode includes receiving, at the primary receiver chain, a first signal corresponding to the transmitted signal; receiving, at the diversity receiver chain, a second signal corresponding to the transmitted signal for providing to an ic circuit; generating, at the ic circuit, an output signal based on the second signal; and generating a cancellation signal based on the output signal and the first signal..
Qualcomm Incorporated

Method for cancelling downlink interference in a lte-advanced network

Introducing changes on the physical layer for pdsch transmission and reception aimed at achieving inter-layer interference cancellation, said changes introduced comprising the introduction of a pattern of transmission gaps at symbols (l) and subcarrier indices (k) of interfering cell's crs signals, which will be exploited by said at least one user device for effective interference cancellation.. .

Cell-specific reference signal interference cancellation improvement

A method includes receiving, at a user equipment, a signal including cell-specific reference signals from a number of cells. Cell-specific reference signal(s) are measured from one of the cells to determine measured result(s).
Nokia Solutions And Networks Oy

Method and performing interference cancellation

A method and apparatus for performing interference cancellation are disclosed. A method for performing interference cancellation of a user equipment (ue) includes: receiving interference control information including an index for indicating a subset of one or more interference information elements, the interference control information being scrambled by a specific identifier (id) which decided a subset configuration of the one or more interference information elements; acquiring a subset of the one or more interference information elements corresponding to the index according to the subset configuration of the one or more interference information elements decided by the specific identifier (id); and attempting to perform interference cancellation using the subset of the one or more interference information elements..
Lg Electronics Inc.



Interference Cancellation topics:
  • Interference Cancellation
  • Communications
  • Cdma System
  • Allocation
  • Base Station
  • Mobile Terminal
  • Communication System
  • Synchronous
  • Asynchronous
  • Matched Filter
  • Linear Function
  • Modulation
  • Rake Receiver
  • Wireless Communication Network
  • Multiplexing


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