72results about "Multiplex communication" patented technology

To provide an access point device, a station device, and a communication method that achieve highly accurate beamforming in a high frequency band.SOLUTION: A first sub-access point device 20000-2 and a second sub-access point device 20000-3 are access point devices that communicate with a station device using a first link 11-10 and a second link 11-11, and include a transmitting unit that transmits a first frame 11-1 through the first link and a receiving unit that receives a response frame 11-2 through the second link. The first frame is a frame that requests the response frame, and the receiving unit performs carrier sense to secure a wireless medium in the second link before the transmitting unit finishes transmitting the first frame through the first link.SELECTED DRAWING: Figure 11

The information expression capability of radio waves is increased by using information expression based on an orthogonal basis with a high degree of freedom that allows for a large number of combinations. [Solution] The system includes a radio wave signal acquisition unit (11) that acquires the complex signal of the received electric field for each element of the array antenna as a received radio wave signal, an orthogonal basis expansion unit (12) that calculates two or more orthogonal basis components from the received radio wave signal, a reference structure acquisition unit (13) that acquires reference structure information used for modulation by the geometric structure of the radio waves, and a restructuring calculation unit (14) that uses the orthogonal basis components and the reference structure information to calculate the elevation angle, azimuth angle, and radius on a sphere (20) with the first orthogonal basis and the second orthogonal basis as poles to represent the geometric structure of the radio waves as a restructured geometric structure, and the orthogonal basis components include orbital angular momentum components.

The invention relates to a field device for process automation. A control unit (4) for transmitting electrical signals between an electronic unit (3) and an antenna connection (2) has a switch (40) with signal interfaces (J1, J2, J3), exactly one antenna signal interface (410), and a control interface (V1, V2). Depending on the activation of the control interface (V1, V2), the signal interfaces (J1, J2, J3) are connected to the antenna signal interface (410).

METHOD FOR SECURE SELF-ADDRESSING OF SLAVE DEVICES IN A LIN NETWORK The present invention relates to a method for configuring at least one slave device by a master device on a multiplexed LIN communication network, comprising the steps: a) sending a configuration instruction from the master device to the slave device; notable in that the method further comprises the step: b) sending a configuration acceptance signal from the slave device to the master device; c) if step b fails, iteration of steps a) and b) until the first of the following two conditions is met: reaching a maximum number of iterations and completion of step b). (Figure to be published with the abbreviation: Figure 2)

To provide a transmitting station and a receiving station capable of switching between OTFS modulation and OFDM modulation in accordance with a Doppler frequency effect.SOLUTION: A transmitting station which wirelessly communicates with a receiving station on a predetermined carrier frequency includes: orthogonal frequency division multiplexing means for performing orthogonal frequency division multiplexing on a symbol sequence; orthogonal time frequency space multiplexing means for performing orthogonal time frequency space multiplexing on a symbol sequence; switching means for switching so as to input a symbol sequence in which a bit stream has been mapped into only one of the orthogonal frequency division multiplexing means and the orthogonal time frequency space multiplexing means; moving speed acquiring means for acquiring a relative moving speed with respect to the receiving station; switch controlling means for controlling the switching means on the basis of the moving speed; and switch notifying means for transmitting a switch notification as a control signal to the receiving station when the switching means is controlled.SELECTED DRAWING: Figure 2

The invention relates to the technical field of wireless communication, in particular to a wireless audio transmission method, device, system and equipment and a storage medium. In the invention, through flexible link coexistence (frequency division / time division multiplexing) and a dynamic enabling control mechanism, intelligent distribution and optimization of transmission resources of the first peripheral equipment and the second peripheral equipment in the connection isochronous flow link group are realized. According to the invention, the system can adaptively select the multiplexing mode according to the actual transmission demand and the channel condition, and combines the repeated transmission strategy, thereby effectively improving the reliability of wireless audio transmission, reducing the time delay, and better adapting to the dynamic change of the wireless channel, thereby remarkably optimizing the overall performance of the dual-device or multi-device cooperative audio transmission.

Provided is a spatial sensing method in a communication system including a transmission device and a reception device, wherein the transmission device transmits at least two OAM mode signals of different frequencies simultaneously, and on the basis of the fluctuation of the received power of the signals measured by the reception device, detects an obstacle in a space between the transmission device and the reception device.

Aspects of the present disclosure relate to a formula-based inter-circle precoding weight determination for an orbital angular momentum (OAM) communication system. Some aspects of the present disclosure relate to an apparatus and method for wireless communication, the apparatus including a processor, an antenna element including a first subset and a second subset of the antenna elements, and a memory coupled to the processor, the memory storing instructions that, when executed by the processor, cause the processor to transmit a first reference signal using a first OAM mode via the first subset of the antenna elements, transmit a second reference signal using the first OAM mode via the second subset of the antenna elements, and receive information indicating a subset of antenna elements of the plurality of antenna elements to use to transmit the first OAM mode. Other aspects, embodiments, and features are also claimed and described.

The purpose of the present disclosure is to perform coordinated communication on the basis of rate splitting in a wireless communication system, and a method performed by a first terminal in a wireless communication system may comprise the steps of: acquiring system information; performing an initial access procedure with a first base station on the basis of the system information; receiving configuration information on channel measurement; performing a channel measurement procedure on the basis of the configuration information on the channel measurement; receiving a first data signal from the first base station; and receiving a second data signal from a second base station.

The objective is to provide an OAM radio wave transmission and reception system without increasing the size of the equipment by acquiring OAM radio wave information through localized measurement of OAM radio waves. [Solution] A radio wave generating device comprising a control unit and a radio wave transmitting unit, wherein the control unit includes an OAM radio wave information setting unit that generates a transmitted radio wave signal based on the OAM mode order, a phase change unit that linearly changes the phase of the transmitted radio wave signal with respect to time according to the OAM mode order, and a complex signal generating unit that generates a complex signal from the transmitted radio wave signal whose phase has been changed by the phase change unit and a reference signal, and the radio wave transmitting unit includes a complex signal conversion unit that decomposes the signal components of the complex signal into a real part and an imaginary part, a radio processing unit that generates a radio signal from the complex signal decomposed into a real part and an imaginary part, and an array antenna that transmits the radio signal as an OAM radio wave.

A transmitter includes a control unit configured to allocate zero power resources in a first signal in a time-frequency domain; and a transmission unit configured to non-orthogonally multiplex the first signal and a second signal and transmit the multiplexed signal, wherein the transmission unit is configured to transmit, in the resources in which the zero power resources are allocated, all of at least one repeated transmission among a plurality of repeated transmissions included in the second signal.

This wireless communication system comprises a transmission device that transmits an OAM multiplexing signal and a reception device that receives the OAM multiplexing signal. The reception device performs channel estimation of each OAM mode on the basis of a preamble transmitted from the transmission device, and selects, on the basis of the channel estimation result, a combination of the OAM modes for use in transmission in the transmission device so as to maximize the communication capacity.

This provides MIMO signal estimation and filter coefficient optimization. [Means] The system comprises D multi-input single-output (MISO) filters and D interference rejection filters. The multiple received signal sequences are the first D received signal sequences. Each of the ith (i is an integer between 1 and D) MISO filters in the D MISO filters receives the ith D received signal sequences as input and estimates the ith single transmitted signal sequence in the D transmitted signal sequences. Each of the ith interference rejection filters in the D interference rejection filters receives a signal obtained by transforming the ith single estimated transmitted signal sequence, which is the estimated result of the ith single transmitted signal sequence, through phase correction and noise correction processing, along with the ith D received signal sequences as input. The filter removes interference signals contained in the ith D received signal sequences and outputs the i+1th D received signal sequences, estimating D transmitted signal sequences including the ith single transmitted signal sequence.

To provide a technique for more suitably transmitting or receiving an advanced digital broadcasting service.SOLUTION: A method includes a transmission step of transmitting a first transmission wave in a first polarization direction and transmitting a second transmission wave in a second polarization direction different from the first polarization direction, a reception step of receiving the first transmission wave and the second transmission wave, and a layer identification step of identifying the layers included in the first transmission wave and the second transmission wave. In each of the first transmission wave and the second transmission wave, a predetermined bandwidth is divided into a predetermined number of segments, and in the layer identification step, a segment group having the same segment number as the segment belonging to the predetermined layer transmitted by the first transmission wave in the first polarization direction from among the segments transmitted by the second transmission wave in the second polarization direction is configured such that identification information that can be identified as a layer different from the predetermined layer is stored in the second transmission wave.SELECTED DRAWING: Figure 2A

A method may use hybrid-TDMA / FDMA frames to synchronize participating nodes to an orchestrator node of a virtual antenna array as the virtual antenna array transmits to a target node. The virtual antenna array is formed by the orchestrator node and the participating nodes. The orchestrator node synchronizes the participating nodes periodically using the hybrid-TDMA / FDMA frames. The virtual antenna array directs joint communications toward and receives communication from the target node. The communication from the target node may be used to learn channel state information (CSI) between the virtual antenna array and the target node. The nodes may include software-defined radios which execute the hybrid-TDMA / FDMA frames. The hybrid-TDMA / FDMA frames may include concurrent transmissions of signal data and metadata. The hybrid-TDMA / FDMA frames may decouple the duty-cycle from the number of nodes.

This transmission device comprises: a signal generation unit for generating signals in -n-th order (n is an integer of 1 or greater) to 0-th order orbital angular momentum modes; a signal transmission unit for transmitting a multiplexed signal obtained by multiplexing the signals in the -n-th order to 0-th order orbital angular momentum modes generated by the signal generation unit; and a phase control unit for performing phase control for increasing, by a prescribed amount, all the orders of the orbital angular momentum mode signals multiplexed into the multiplexed signal transmitted by the signal transmission unit.

A base station device includes a reception point that includes a plurality of antennas, and a control section that selects a plurality of terminals that transmit uplink signals to be received while space-division multiplexed by the plurality of antennas. The control section controls a ratio between a number of first terminals and a number of second terminals in selecting the plurality of terminals, the second terminals being terminals whose rate of the uplink signals is higher than a rate of the uplink signals of the first terminals, the ratio being controlled depending on a target transmit power configured for the first terminals.

To optimize transmission capacity while maintaining transmission quality.SOLUTION: The method comprises: determining whether the required SNR for the current modulation index and roll-off rate is satisfied, and when it is determined that the required SNR is not satisfied, performing the process of lowering the modulation index; calculating transmission capacity that goes through the transmitting amplifier, using each of identified roll-off rates and the SNR, on the basis of the result of determination; and determining an optimum transmission capacity from among the calculated transmission capacities, on the basis of a plurality of PAPR values, while sequentially changing the average transmit power, and determining the roll-off rate at which the optimum transmission capacity is achieved, as a final roll-off rate for the transmitting amplifier.SELECTED DRAWING: Figure 6

A wireless communication system comprising a transmission device provided with a transmission UCA and a reception device provided with a reception UCA, wherein the reception device receives, by the reception UCA, an OAM multiplexed signal transmitted from the transmission device and a MIMO multiplexed signal transmitted from a transmission terminal.

To optimize transmission capacity while maintaining transmission quality.SOLUTION: The method comprises: identifying each roll-off rate using a predetermined relationship table, calculating a degraded SNR equivalent on the basis of the amount that the PAPR of a transmitting amplifier exceeds a backoff and a minimum Euclidean distance, and calculating an SNR for average transmit power; selecting either SC-FTN transmission or Nyquist transmission, using the calculated SNR; when SC-FTN transmission is selected, calculating transmission capacity that goes through the transmitting amplifier, using each of the identified roll-off rates and the SNR; and when SC-FTN transmission is selected, determining an optimum transmission capacity from among the calculated transmission capacities on the basis of a plurality of PAPR values, while sequentially changing the average transmit power, and determining the roll-off rate at which the optimum transmission capacity is achieved, as a final roll-off rate for the transmitting amplifier, and when Nyquist transmission is selected, determining that Nyquist transmission using the transmitting amplifier be performed.SELECTED DRAWING: Figure 6

A communication method and apparatus are provided. In the communication method, a second communication apparatus may indicate a first set of frequency units and a first frequency interval by using first information. The first communication apparatus may determine a second set of frequency units based on the first set of frequency units and the first frequency interval. The first set of frequency units and the second set of frequency units are frequency units used to transmit a first type of signal in different types of time units.

A terminal according to one aspect of the present disclosure is subject to application of dynamic switching between a first scheme using multi-panel simultaneous transmission space division multiplexing (SDM) for a non-codebook based physical downlink shared channel (PUSCH) and a second scheme having transmission in the PUSCH relating to one panel, and is characterized by including: a reception unit that receives an instruction indicating the second scheme; and a control unit that applies a first sounding reference signal (SRS) resource indicator (SRI) field in downlink control information (DCI). According to one aspect of the present disclosure, at least one of an SRI field or a TPMI field can appropriately be applied.

To provide a radio signal processing system and a radio signal processing method which implement iterative MUD capable of shortening a computation time.SOLUTION: A radio signal processing system comprises: error calculation means for generating two or more patterns of estimated signals for which a waveform is estimated for each of transmitted signals transmitted from two or more second communication stations and for respectively calculating an estimation error based on a difference between the received signals and a sum of the estimated signals included in the respective generated patterns; selection means for selecting two or more patterns of the estimation signals based on the respective estimation errors calculated by the error calculation means; probability calculation means for calculating a probability distribution indicating a distribution of probabilities that the estimated signals are the transmission signals based on the estimation errors with respect to the two or more patterns selected by the selection means; and estimation means for estimating information included in the transmission signals based on the probability distribution calculated by the probability calculation means.SELECTED DRAWING: Figure 1

A method is provided in one example embodiment and includes creating a segment organization, which includes a configuration profile. The method also includes attaching the configuration profile to a server in the segment organization. The method further includes sending the attached configuration profile to a database in a physical network.

To enable a base station to transmit information indicating transmission power to each of a plurality of terminals.SOLUTION: There is provided a base station provided with a control device and a radio device. The radio device receives reference signals from each of a plurality of terminals. The control device estimates reception quality of transmission from the terminals based on the reference signals for each of the plurality of terminals. The control device determines transmission power for the terminals to transmit uplink signals based on the estimated reception quality for each of the plurality of terminals. The radio device transmits information indicating the determined transmission power to each of the plurality of terminals.SELECTED DRAWING: Figure 1

An apparatus and method for generating a broadcast signal frame are disclosed. An apparatus for generating a broadcast signal frame according to an embodiment of the present invention includes a combiner configured to generate a multiplexed signal by combining a core layer signal and an enhancement layer signal, a power normalizer configured to reduce power of the multiplexed signal to a power level corresponding to the core layer signal, a time interleaver configured to generate a time-interleaved signal by performing interleaving applied to both the core layer signal and the enhancement layer signal, and a frame builder configured to generate a broadcast signal frame, wherein the broadcast signal frame includes a preamble for signaling time interleaver information corresponding to the time interleaver, and wherein the preamble includes a field indicating a start position of a first complete FEC block corresponding to each of physical layer pipes.

The invention provides a data processing method which is applied to the field of optical communication. The data processing method comprises the following steps: a sending device obtains a first 66-bit code block stream of an MAC frame; the transmitting device obtains a first check field according to the first 66-bit code block stream. The first check field is used to check the first 66-bit code block stream. And the sending device obtains a second 66-bit code block stream according to the first 66-bit code block stream and the first verification field, or the sending device adds the first verification field in a 66-bit code block behind the first 66-bit code block stream. And the transmitting device maps the second 66-bit code block stream to the payload region of the data frame, or the transmitting device maps the first 66-bit code block stream and the next 66-bit code block to the payload region of the data frame. And the sending device sends the data frame. In the technical scheme provided by the invention, the receiving equipment can identify whether the 66-bit code block stream has the error code or not through the first verification field, so that the communication reliability is improved.

To prompt a user to take more appropriate measures when deterioration in reception quality is detected.SOLUTION: A broadcast receiving unit measures a first reception quality that is a reception quality of a data signal to be broadcast, and a second reception quality that is a reception quality of a signal other than the data signal, and when a quality difference which is a difference between the first reception quality and the second reception quality is larger than a predetermined quality difference threshold after a certain point in time, a control unit outputs notification information indicating the possibility of reception quality deterioration due to hierarchical division multiplexing of the data signal to a notification unit.SELECTED DRAWING: Figure 1

To provide a method enabling the increase of transmission capacity when implemented in combination with existing services.SOLUTION: A transmitting device is provided, comprising : bit interleaving portions 5231 and 3231 which generate a first bit sequence of a first data stream and a second bit sequence of a second data stream by performing bit interleaving, respectively; a mapping portion 5241 which generates a first modulation symbol sequence by mapping the first bit sequence; a mapping portion 3241 which generates a second modulation symbol sequence by mapping the second bit sequence; an addition portion 3261 which generates a multiplexed signal by superimposing the first and second modulation symbol sequences; and a TMCC / AC signal generation portion 5091 which generates a control signal from control information indicating a multiplexing method.SELECTED DRAWING: Figure 1