Abstract: Embodiments of the disclosure provide a method and device for performing communication. The method comprises: determining a target transmission pattern from a set of candidate transmission patterns, wherein the target transmission pattern is indicated by a signal including one or more of: a reference signal, a signal for performing CRC, and a feedback signal; and performing communication between a network device and a terminal device by using the target transmission pattern.

Abstract: A method, a computer-readable medium, and an apparatus are provided that enable use of a full transmission power for a UE having a first set of coherent antenna ports that is non-coherent to a second set of coherent antenna ports. The apparatus determines a transmission power for a physical uplink shared channel (PUSCH) transmission from at least one antenna port including splitting the transmission power among multiple antenna ports having non-zero power without scaling the transmission power, and wherein the UE includes at least a first antenna port that is non-coherent to a second antenna port. Then, the apparatus transmits the PUSCH transmission using the determined transmission power.

Abstract: Wireless radio device alignment tools and methods. Described herein are methods for point-to-point alignment of wireless radio devices and alignment tools to assist in aligning wireless radio devices. These alignment tools may automatically or manually receive location information and may use a local compass function to determine a rough or initial alignment and additional tools to provide further (fine) alignment based on calculated and actual signal strength between the two devices being aligned.

Abstract: A device, method, and computer-readable medium are provided for detecting and mitigating signal interference due to passive intermodulation at a base station. Generally, when antennas are configured to transmit at two or more different bands or frequencies, particular combinations of frequencies can introduce passive intermodulation at one of the corresponding receive bands or frequencies. Passive intermodulation is exacerbated, in some instances, due to the presence of non-linearities in the RF path. Embodiments can be configured to automatically detect the presence of passive intermodulation in one of the receive bands or frequencies and dynamically mitigate the affected receive signal to maintain optimal system performance.

Abstract: A method for equalizing a wireless communication channel includes transmitting a data signal over a primary channel. During transmission of the data signal, a corresponding data signal is sent over a secondary channel. The information received from the secondary channel is compared to the information received from the primary channel and differences between the information received from each of the channels are observed. These differences are used as inputs to an equalizer algorithm that may be used to reduce distortion of the data signal sent over the primary channel.

Abstract: The present disclosure relates to a communication technique converging a 5G communication system with IoT technology to support a higher data transmission rate compared to a 4G system. The present disclosure can be applied to intelligent services (for example, smart homes, smart buildings, smart cities, smart cars or connected cars, healthcare, digital education, retail, security- and safety-related services) based on 5G communication technology and IoT-related technology. The present invention relates to a method for controlling transmission power of a terminal in a wireless communication system.

Abstract: A wireless device configured for transmission using a transmission scheme other than a multi-antenna transmission scheme is provided. The wireless device includes at least one receiver configured to receive a transmission of a multi-antenna transmission scheme, and processing circuitry configured to perform at least one of a channel estimation function and measurement function using the received transmission of the multi-antenna transmission scheme, the multi-antenna transmission scheme remaining transparent to the wireless device.

Abstract: In an aspect, a user equipment (UE) receives a parameter representing a maximum transmission power, transmits first radio frequency (RF) signals to a first node over a first wireless communication link in accordance with a first radio access technology (RAT) during a plurality of time segments, wherein the first RF signals are transmitted during the plurality of time segments at one or more first power levels, and transmits second RF signals to a second node over a second wireless communication link in accordance with a second RAT during the plurality of time segments, wherein the second RF signals are transmitted during the plurality of time segments at one or more second power levels, and wherein a sum of an average of both the one or more first power levels and the one or more second power levels over the plurality of time segments does not exceed the maximum transmission power.

Abstract: Disclosed are an electronic device and a control method thereof. The electronic device includes: a housing; a plurality of antennas respectively installed in a plurality of locations spaced from each other in the housing; a communicator configured to transmit and receive a communication signal through the antenna; and at least one processor configured to: select a combination of two or more antennas having a relatively higher quality out of the plurality of antennas based on a transmission and reception quality of the communication signal; and control the communicator to transmit and receive the communication signal through the selected combination of antennas.

Abstract: Disclosed in the present application are a method and an apparatus for calibrating an antenna. In the method, in a receiving channel calibration process, first a receiving channel beam weight matrix is initially updated by using a receiving calibration signal from a reference beam direction, i.e., performing initial receiving channel calibration, and then, for different beam direction regions, beam weight vectors corresponding to multiple beam directions within particular beam direction regions are updated.

Abstract: A method for Wireless Local-Area Network (WLAN) communication in a WLAN device includes generating a WLAN transmission including first bits, by at least (i) encoding the first bits with a Forward Error Correction (FEC) code to produce first encoded bits, and (ii) scrambling the first encoded bits with a first scrambling sequence. The WLAN transmission is transmitted from the WLAN device to a remote WLAN device. In response to receiving from the remote WLAN device an indication that reception of the WLAN transmission has failed, a WLAN retransmission including second bits is generated. Generating the retransmission includes (i) obtaining second encoded bits, which include the second bits encoded with the FEC code, and (ii) scrambling the second encoded bits with a second scrambling sequence that is different from the first scrambling sequence. The WLAN retransmission is transmitted from the WLAN device to the remote WLAN device.

Abstract: A device includes: N communication modules, a selector that selects one communication module, an obtainer that obtains a reception strength of a signal, a generator that generates an image that includes 2N display regions associated with the N communication modules in order of communication speed from slower to faster per two display regions counted from a reference position along one direction, and a display. The generator generates, as the image, an image displaying (i) a graphic of a first type in, among the two display regions associated with the one communication module, more display regions counted from proximity to the reference position along the one direction, with an increase in the reception strength of the one communication module, and (ii) the graphic of the first type in each of two display regions associated with a communication module that communicates at a slower speed than the one communication module.

Abstract: A high-frequency module includes a transmission signal amplifier that outputs a transmission signal to an antenna terminal side; a reception signal amplifier that amplifies a reception signal supplied from an antenna terminal; a switch that selectively connects the antenna terminal to either an output of the transmission signal amplifier or an input of the reception signal amplifier; and a directional coupler that is provided on a transmission signal path and detects a signal level of the transmission signal. The transmission signal amplifier is controlled by a first control signal supplied from a first control circuit. The reception signal amplifier is controlled by a second control signal supplied from a second control circuit. The switch is controlled by a switch control signal supplied from the first control circuit. The directional coupler is controlled by a coupler control signal supplied from the first control circuit.

Abstract: An electronic device according to various exemplary embodiments may include a housing; a first antenna module configured to be disposed in a first end portion in the housing and to include a first antenna and a first amplifier circuitry to output a signal corresponding to the first antenna, a second antenna module configured to be disposed in a second end portion in the housing and to include a second antenna and a second amplifier circuitry to output a signal corresponding to the second antenna, and a transceiver configured to include a first port connected to the first antenna through the first amplifier circuitry and a second port connected to the second antenna through the second amplifier circuitry.

Abstract: A transmitting station includes an amplifier unit that amplifies a transmitting signal, a transmitting antenna that wirelessly transmits the transmitting signal that has been amplified, and a controller unit that regulates a frequency of the transmitting signal and an input power to the amplifier unit on the basis of an estimation value of reception quality that is a signal quality when the transmitting signal is received by a receiving station.

Abstract: A method and a terminal for transmitting a feedback signal by a terminal in a wireless communication system are provided. The method includes receiving, from a base station, a feedback information configuration; receiving, from the base station, a reference signal; estimating a channel between the base station and the terminal based on the reference signal; configuring channel component information associated with separating each of a plurality of channel elements of the channel according to components of the plurality of channel elements; configuring grouping information associated with grouping the plurality of channel elements; and transmitting feedback information including the configured channel component information and the configured grouping information.

Abstract: In order to enable a UE receiving a narrowband signal transmitted using in-band resources to use the LTE reference signals to assist the UE in receiving the narrowband signal using an in-band deployment, a phase rotation employed by the base station may be fixed relative to a known reference position in time. An apparatus for wireless communication at a base station may determine a phase offset for a narrowband signal for transmission using wideband resources, the phase offset having a relationship to a reference point in time and transmit the narrowband signal using the determined phase offset. An apparatus for wireless communication at a UE may receive a narrowband signal having a frequency location within a wideband signal and rotate a symbol of the wideband signal by a per symbol phase offset having a relationship of the phase offset to a reference point in time.

Abstract: Aspects of the present disclosure describe receiving, from an access point, an indication of at least one of a beamforming method for beamforming a RS or a normalization method for normalizing power for beamforming the RS. A channel covariance matrix corresponding to interference over a plurality of antenna ports can be generated, as well as a RS beamforming matrix based at least in part on at least one of modifying the channel covariance matrix or on the normalization method. The RS can be generated based on the RS beamforming matrix and the beamforming method. The RS can be transmitted to the access point based on the RS beamforming matrix.

Abstract: An electronic device according to an embodiment disclosed in the disclosure includes a housing, a plurality of antennas positioned at mutually different areas of the housing, respectively, a wireless communication circuitry to transmit a diversity signal using the plurality of antennas, a processor operatively connected with the wireless communication circuitry, and a memory operatively connected with the processor to store instructions.

Abstract: Certain aspects of the present disclosure relate to methods and apparatus for optimizing millimeter wave beam-searching. In certain aspects, a method for use by a wireless communications device includes determining a usage scenario of the wireless device based on input performing a beam search to maintain or establish a communication link with one or more other wireless devices, wherein one or more beams are prioritized or de-prioritized during the beam search based on the usage scenario.

Abstract: The present invention relates to a wireless communication system. Particularly, the present invention relates to a method for receiving control information in a wireless communication system and a device therefor, the method comprising the steps of: receiving a PDCCH signal including uplink scheduling information; transmitting a PUSCH signal by using the uplink scheduling information; and receiving a PHICH signal including acknowledgement information on the PUSCH signal, wherein an RS for the PUSCH signal exists only in one slot per RB pair within an RB set in which the PUSCH signal is transmitted, and a resource for receiving the PHICH signal is determined by using an index of the slot in which the RS exists.

Abstract: 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.

Abstract: There is disclosed a method of operating an allocating radio node in a wireless communication network, the method comprising allocating, to a second radio node, a frequency range for communication, the frequency range being part of an operating bandwidth of the second radio node, the frequency range comprising an integer number S of subcarriers, the number S of subcarriers corresponding to a value of a limitation relation applied to a fraction of the operating bandwidth, the fraction corresponding to N1/N2, wherein N1 and N2 are integers and N1 is smaller than N2. The disclosure also pertains to related devices and methods.

Abstract: A time division duplex (TDD) scheduling interval communicating transmissions in a first direction may include one or more regions for communicating in a second direction, where the first direction is a transmit direction and the second direction is a receive direction, or vice versa. A radio frame may include TDD scheduling intervals with such regions and/or TDD scheduling intervals without such regions for wireless communication, and these TDD scheduling intervals may further be configured in accordance with different frame structure configurations, such as different scheduling interval lengths, subcarrier spacings or symbol durations.

Abstract: Disclosed is a self-calibration method and apparatus for an array antenna system. According to an embodiment of the present disclosure, a correction method of an array antenna system includes: deriving, at a first time, a correction factor Ri,j for a path connecting an i-th (i is an integer equal to or greater than one and equal to or less than m) transmission antenna and a j-th (j is an integer equal to or greater than one and equal to or less than n) reception antenna; deriving, at a second time, a calibration factor {circumflex over (Q)}i,j for the path connecting the i-th transmission antenna and the j-th reception antenna; and performing, based on the {circumflex over (Q)}i,j, calibration on the path connecting the i-th transmission antenna and the j-th reception antenna.

Abstract: An electronic device according to various embodiments may include at least one transceiver, and at least one processor, operatively coupled to the at least one transceiver, configured to control to transmit, via a device-to-device (D2D) communication path to at least another electronic device, a signal with a first transmit (Tx) power, and control to re-transmit, via the D2D communication path to the at least another electronic device, the signal with a second Tx power lower than the first Tx power.

Abstract: System and techniques for secure wireless association are described herein. A station (STA) may transmit a probe request for the wireless network that includes identification of a certificate. An access point (AP) receiving the probe request may obtain the identified certificate and use the certificate to encrypt a key. The encrypted key may then be included in a beacon by the AP. The STA may then obtain the encrypted key from the beacon, decrypt the key with the certificate, and then use the key to associate to the wireless network via the AP.

Abstract: A wireless transmitter includes a radio interface and transmitter circuitry. The radio interface includes multiple transmit antennas. The transmitter circuitry is configured to hold multiple steering matrices specifying weights to be applied to one or more spatial streams transmitted via the multiple transmit antennas to a receiver that includes one or more receive antennas, the multiple steering matrices are specified over multiple sub-carriers, to calculate smoothed weights, by applying to the weights of the steering matrices phase-only corrections that reduce phase variations among the weights of the steering matrices over the sub-carriers, and to transmit to the receiver beam-formed transmissions of the one or more spatial streams over the sub-carriers, by applying to the spatial streams the smoothed weights in the respective sub-carriers.

Abstract: Provided are an electronic device and method for wireless communication. The electronic device comprises: a processing circuit configured to: based on the reception of a first signal sent by a remote wireless communication device, selecting one or more candidate wave beams from a pre-determined group of wave beams; and acquiring an optimal wave beam pair based on the one or more candidate wave beams, wherein the optimal wave beam pair is the wave beam pair enabling a channel gain to be the maximum.

Abstract: Methods and systems for operating a mobile wireless repeater station for wireless communication on a wireless local area network (WLAN) having a wireless access point (WAP) and a plurality of stations at a location of the WAP. An example implementation includes components coupled to one another to performs operations including sniffing communications channels to intercept communication packets; identifying a subset of one or more relay candidates among the stations to optimize for a relay of subsequent communications based on the intercepted communication packets; and spatially mapping the location of the WAP to determine an optimal spatial placement for the mobile wireless repeater station between the WAP and the identified subset of relay candidates. In an example, the mobile wireless repeater station is adjusted based on the optimal spatial placement.

Abstract: This invention presents methods and systems for RF path and antenna connection and switch in wireless communication comprising an electromagnetic lens and M antennas; N (N<=M) radio frequency (RF) transmitting and receiving chains/paths that contain Low Noise Amplifiers (LNAs), RF filters, mixers, amplifiers; a plural of digital to analog converters (DACs) and analog to digital converters (ADCs); a connection and switch network that maps the signals from M antennas to N RF paths in the UL or mapping the signals from N RF path to M antennas in the DL, and a processor unit that measures and estimates the receiving signal strength (RSS) or the equivalent metrics on each antenna for each user equipment (UE) based on the received UL reference signals, and drives signals to control the connection and switch network to connect RF paths and antennas for data transmission.

Abstract: A wireless apparatus multiplies, by a first weight corresponding to each of a plurality of beams, a received signal corresponding to a reference signal transmitted from each of wireless terminals, estimates a channel response associated with each of the beams, computes a predetermined metric for each combination of beams to be used, selects the beams to be used when performing signal detection with respect to a received signal into which radio signals transmitted from the wireless terminals are spatially multiplexed based on the predetermined metric, determines a second weight to be used for the signal detection and multiplies, by the second weight, the received signal into which radio signals transmitted from the wireless terminals are spatially multiplexed to perform the signal detection.

Abstract: There is provided mechanisms for processing uplink signals. A method is performed by a RRU (200). The method comprises obtaining uplink signals (S102) as received from wireless devices at antenna elements of an antenna array of the RRU (200), wireless device being associated with its own at least one user layer. The method comprises capturing (S104) energy per user layer by combining the received uplink signals from the antenna array for each user layer into combined signals, resulting in one combined signal per user layer. The combining for each individual user layer is based on channel coefficients of the wireless device associated with said each individual user layer. The method comprises providing (S106) the combined signals to a BBU (300).

Abstract: A method of operating a communication system is disclosed. The method includes forming a data frame having plural orthogonal frequency division multiplex (OFDM) symbols. A first set of preamble subcarriers is allocated to at least one of the OFDM symbols. A second set of data subcarriers is allocated to said at least one of the OFDM symbols.

Abstract: Various aspects of the present disclosure provide for methods, apparatus, and computer software for transmitting a common uplink burst in time division duplex (TDD) carriers. The common uplink burst includes a sounding reference signal (SRS) transmitted separate from (e.g., decoupled from) a demodulation reference signal (DM-RS). At least one symbol in the common uplink burst includes a control region for carrying control information and a data region for carrying data information. The SRS may be precoded separately from precoding of the control and data regions, so that the control and/or data information may be transmitted utilizing multiple input multiple output (MIMO).

Abstract: A switch component includes a common terminal, at least two selection terminals, a switching circuit that selectively connects the common terminal to each of the at least two selection terminals, and an inductor. One end of the inductor is connected to one of the at least two selection terminals. The switching circuit is integrated with the inductor.

Abstract: Communication network architectures, systems and methods for supporting a network of mobile nodes. As a non-limiting example, various aspects of this disclosure provide autonomous vehicle network architectures, systems, and methods for supporting a dynamically configurable network of autonomous vehicles comprising a complex array of both static and moving communication nodes. In particular, systems and methods for operating self-organized fleets of autonomous vehicles.

Abstract: Some techniques for implementing estimation of channel states with high accuracy and efficient feedback of the channel states in 3D MIMO are disclosed. One aspect of the present invention relates to user equipment for implementing 3D MIMO (3-Dimensional Multiple-Input Multiple-Output) communication, comprising: a channel state information generation unit configured to measure channel states of antenna ports of 3D MIMO antennas in a base station with reference signals transmitted from the antenna ports and generate channel state information based on the measured channel states; and a channel state information feedback unit configured to use different channel state information feedback means for antenna ports in respective dimensions of the antennas to feed the generated channel state information back to the base station.

Abstract: Exemplary embodiments include a computer-implemented method for configuring at least one antenna array comprising receiving a plurality of samples corresponding to signals incident on a plurality of antennas; using a computer arrangement, computing one or more data related to an envelope of the samples and estimating a direction of arrival of the signals incident on the antennas based on the one or more computed data; and configuring the at least one antenna array based on the estimated direction of arrival. The computing and estimating procedures can be performed for each of a plurality of direction-of-arrival candidates. The one or more data can be statistics corresponding to multipath shape factor parameters. The spatial selectivity of the at least one antenna array can be configured based on the estimated direction of arrival. Other exemplary embodiments include apparatus and computer-readable media embodying one or more of the exemplary computer-implemented methods and/or procedures.

Abstract: A transmitter and a receiver for communicating data using at least two separate RF channels using channel bundling. The transmitter includes a data stream partitioner configured to partition a data stream of data to be communicated into two or more stream partitions, two or more modulators configured to each receive a stream partition and to generate modulated data from the received stream partition, and an interleaver configured to assign the modulated data generated by a modulator from a received stream partition to different RF channels for transmission.

Abstract: An example operation may include one or more of identifying, via a ledger validation thread, a corrupted data block that is stored within a chain of blocks on a distributed ledger, selecting a blockchain peer from among a plurality of blockchain peers that have access to the distributed ledger, and retrieving a replacement data block from the selected peer, determining whether the replacement data block is valid based on one or more of a previously stored validation block associated with the chain of blocks, and, in response to determining the replacement data block is valid, replacing the corrupted data block with the replacement data block on the distributed ledger.

Abstract: Provided is a transmission parameter configuration method, information transmission method and terminal, and storage medium, including: configuring, by a base station, N basic transmission parameter sets, where N>1; transmitting M types of channels and/or signals by adopting the N basic transmission parameter sets, where N?M; determining, by a terminal, the N basic transmission parameter sets; selecting, according to reference information, a target basic transmission parameter set from the N basic transmission parameter sets, where the reference information includes a type of a channel or a signal to be transmitted, and/or blind-detected preamble sequence information, and/or a bandwidth, and/or the number of transmission layers, and/or the number of antenna ports; and transmitting the channel or the signal by adopting the target basic transmission parameter set which is selected.

Abstract: A material-discerning device is arranged to include an antenna, a proximity sensor, a band pass filter and a processor. The antenna radiates a radio-frequency signal and a material object is located in the field created by the antenna and near the proximity sensor. Change in the amplitude of the radio-frequency signal due to the presence of the material object is detected by the proximity sensor. The change in amplitude of the radio-frequency signal is stored. The frequency of the radio-frequency signal is changed and the process is repeated until a range of frequencies have been swept and stored. After the range of frequencies has been swept and stored, the processor determines the type of material of the material object using the results of the changes in amplitude of the radio-frequency signals.

Abstract: The present disclosure relates to a foreign object detection method of a wireless power transmitter, and the method may include acquiring the frequency characteristics of a current flowing through a coil within the wireless power transmitter, comparing a peak frequency with a resonant frequency, and detecting whether or not the foreign object is placed on the transmitter through the comparison. In addition, the present disclosure relates to an interference avoidance method of a wireless power transmitter, and the method may include connecting a head unit of an automobile in a wireless manner through a communication device, receiving a first signal for avoiding interference from the head unit to stop wireless charging or change a first frequency band to a second frequency band, and receiving a second signal from the head unit to resume the wireless charging or change to the first frequency band.

Abstract: A method for operating a transmitting node of a wireless communication network. The transmitting node includes or is connected to an antenna array having multiple antenna elements. A signal indication indicating a first and/or reference signaling is obtained. The first reference signaling includes transmission on a first plurality of disjunct frequency bands, and the second reference signaling includes transmission on a second plurality of disjunct frequency bands. The first reference signaling and the second reference signaling are transmitted based on a signal map of the first and the second reference signaling to antenna elements of the antenna array.

Abstract: A feedback control system for data transmissions in voice activated data packet based computer network environment is provided. A system can receive audio signals detected by a microphone of a device. The system can parse the audio signal to identify trigger keyword and request. The system can select a content item using the trigger keyword or request. The content item can be configured to establish a communication session between the device and a third party device. The system can monitor the communication session to measure a characteristic of the communication session. The system can generate a quality signal based on the measured characteristic.

Abstract: Techniques are described for wireless communication at a wireless communication device. A determination may be made regarding the number of receive chains, of a plurality of receive chains, to enable for a channel. Power to the receive chains may be regulated based on the determined number of enabled receive chains. The determination may be based on a transmission scheduling rate for the wireless communication device and a rank for the channel. In some examples, the determination may further be based on a channel quality of the channel and/or a type of traffic scheduled for the channel.

Abstract: Embodiments of the present invention provide a receiver and a data receiving method. The receiver includes: two first input ends, configured to receive a digital signal of an X-polarization state and a digital signal of a Y-polarization state; a despreading module, configured to despread the digital signal of the X-polarization state and the digital signal of the Y-polarization state based on N delay values and spreading codes of N transmitters, to obtain N first baseband signals and N second baseband signals; and a multiple-input multiple-output equalization module, configured to perform equalization filtering processing on the N first baseband signals and the N second baseband signals, to obtain recovered data of the first polarization states and recovered data of the second polarization states of the N transmitters. In the embodiments of the present invention, the coherent CDMA multipoint-to-point data transmission in an optical communications system is implemented.

Abstract: A filter circuit may include a first path having a first complex baseband filter. The circuit may further include a second path having a second complex baseband filter. The circuit may further include a combiner coupled to an output of the first complex baseband filter and an output of the second complex baseband filter.

Abstract: In order to transmit a large amount of data in series at a time with a MIMO communication scheme while avoiding deterioration of decoding characteristics due to change over time by a channel matrix, a wireless communication system uses an open-loop type and a closed-loop type of MIMO communication modes in combination and switches to the open-loop MIMO communication mode in response to the information that the amount of data to be transmitted at a time has exceeded a predetermined amount of bits or a predetermined transmission time during data transmission under the closed-loop MIMO communication mode. By discontinuing useless closed-loop MIMO communication and switching to the open-loop MIMO communication mode that is better than Zero-forcing, the decoding characteristics are prevented from simply becoming deteriorated.