44results about "Multiplex code application" patented technology

A user equipment (UE) configured for operation in a 5th Generation New Radio (5G NR) network may decode signaling to configure the UE with one or more orthogonal cover code (OCC) sequences. The UE may apply one of the OCC sequences to physical uplink shared channel (PUSCH) repetition of a PUSCH transmission. For inter-slot OCC PUSCH repetition, values of an OCC sequence are applied across slots of the PUSCH repetition. The UE may apply a first value of an OCC sequence of length two to a first repetition of a PUSCH transmission in a first slot and apply a second value of the OCC sequence of length two to a second repetition of the PUSCH transmission in a second slot.

According to at least one of various embodiments of the present invention, a terminal may: receive sidelink data from another terminal through a PSSCH; and transmit HARQ feedback information about the reception of the sidelink data through a PSFCH. A plurality of symbols may be allocated for the PSFCH transmission on the basis that the PSFCH transmission is performed on a shared spectrum, and OCCs may be applied to all of the plurality of symbols allocated for the PSFCH transmission, with the exception of a first symbol.

Method for secure distance measurement comprising the following steps: transmitting from a verifier (V) to a prover (P) a challenge message comprising a challenge bit sequence (C); transmitting from the prover (P) to the verifier (V) a response message comprising the response bit sequence (R); verifying, in the verifier (V), the response message on the basis of the response bit sequence (R); and determining, in the verifier (V), the distance between the verifier (V) and the prover (P) on the basis of the time difference between the challenge message and the response message. The challenge message and / or the response message are transmitted by a transmission protocol in which the bit sequence (C, R) of the corresponding message is transmitted by a transformed spreading code chip sequence (TCSCS, TRSCS), wherein the transformed spreading code chip sequence (TCSCS, TRSCS) is obtained by transforming a spreading code chip sequence (CSCS, RSCS) of the bit sequence (C, R) on the basis of a transform function (ftrans).

Provided in the embodiments of the present application are an information transmission method and apparatus, and a first communication node and a second communication node. The method comprises: receiving an extended preamble sequence based on a selected extended code and transmitted by a second communication node; determining a target extended code based on the extended preamble sequence, where the target extended code is an extended code selected by a single second communication node in an extended code set; and transmitting indication information of the target extended code.

Wireless communications systems and methods related user multiplexing with discrete Fourier transform (DFT) precoded frequency interlaces are provided. A first wireless communication device identifies a first block-spreading code from a set of block-spreading codes associated with user multiplexing. The first wireless communication device communicates, with a second wireless communication device using a frequency interlace in a frequency spectrum, a first communication signal including a first block of information symbols spread across a set of resource blocks (RBs) within the frequency interlace based on the first block-spreading code. The first communication signal is generated by block-spreading the first block of information symbols based on the first block-spreading code to produce a first block of spread information symbols, performing a DFT on the first block of spread information symbols, and mapping the first block of spread information symbols to the set of RBs.

Various solutions for applying orthogonal cover code (OCC) to radio resource unit with respect to an apparatus in mobile communications are described. The apparatus may apply a first OCC sequence to at least one radio resource unit. The apparatus may transmit the at least one radio resource unit applied with the first OCC sequence to a network node.

Wireless communications systems and methods related user multiplexing with discrete Fourier transform (DFT) precoded frequency interlaces are provided. A first wireless communication device identifies a first block-spreading code from a set of block-spreading codes associated with user multiplexing. The first wireless communication device communicates, with a second wireless communication device using a frequency interlace in a frequency spectrum, a first communication signal including a first block of information symbols spread across a set of resource blocks (RBs) within the frequency interlace based on the first block-spreading code. The first communication signal is generated by block-spreading the first block of information symbols based on the first block-spreading code to produce a first block of spread information symbols, performing a DFT on the first block of spread information symbols, and mapping the first block of spread information symbols to the set of RBs.

Certain aspects of the present disclosure provide techniques for demodulation reference signal (DMRS) sequence selection. One aspect provides a method for wireless communications by a first wireless node. The method generally includes selecting a type of DMRS sequence to use for communications with a second wireless node based on a signal quality associated with the communications, receiving a message having the type of DMRS sequence, and performing channel estimation based on the DMRS sequence using the message.

Systems, methods, processors, and circuitries are provided to support random access channel (RACH) -related physical uplink shared channel (PUSCH) with orthogonal cover code (OCC) spreading. In one example, a method includes receiving indication that orthogonal cover code (OCC) spreading for random access channel (RACH) related physical uplink shared channel (PUSCH) transmissions is supported; transmitting a first RACH-related message based on a PRACH preamble or RACH opportunity, wherein the PRACH preamble or RACH opportunity indicates that a user equipment (UE) intends to apply OCC spreading to RACH-related PUSCH transmissions; and transmitting at least one RACH-related PUSCH transmission spread based on a selected OCC.

This application provides a communication method, apparatus, and system, and relates to the field of wireless communication, and in particular, to wake-up signal monitoring in a wireless communication system. A terminal device performs monitoring at a plurality of frequency domain positions when monitoring a wake-up signal, to increase a receiving rate of the wake-up signal. The method may include: receiving a first signal, where the first signal is used for time and / or frequency synchronization; and receiving first information at N frequency domain positions, where a modulation scheme of the first information is on-off keying OOK, the first information is carried in the N frequency domain positions, and N is an integer greater than 1.

Embodiments of the present invention provide a wireless communications method, user equipment, a base station and a system, and relate to the field of wireless communications. The method includes: acquiring a frequency domain spreading factor, a symbol-level spreading factor and a transmission time interval-level spreading factor; and performing frequency domain spreading, symbol-level spreading and transmission time interval-level spreading on first to-be-sent information respectively according to the acquired spreading factors and sending first spread information; or, despreading, according to the acquired spreading factors, second spread information sent by a base station. By acquiring a frequency domain spreading factor, a symbol-level spreading factor and a transmission time interval-level spreading factor, and sending or receiving information according to the acquired spreading factors, the present invention solves problems in the prior art that when simple repetitive sending is performed in a frequency domain or time domain, sending efficiency is low, delay is relatively long, and interference between user equipments in a same frequency band bandwidth is relatively severe, and achieves an objective of improving system capacity and resource utilization.

Disclosed are a method and apparatus for processing interference, a storage medium and an electronic device. The method includes: generating a first reference signal, and sending the first reference signal according to a first parameter set.

The present invention relates to a method and device for modulating using Zadoff-Chu sequences. Each K-phase symbol to be transmitted is converted into a Zadoff-Chu sequence of a predetermined length N, a predetermined root r, and a frequency offset q that depends on the K-phase symbol. Various root values ​​can be used to separate different uplink and downlink communications and synchronous or asynchronous communications. The modulation device is implemented in the frequency domain. The present invention also relates to a demodulation method and device that enable the K-phase symbols thus transmitted to be restored. The demodulation device may be implemented in the time domain or the frequency domain.

An advanced radio apparatus (102) includes a set of antennas (205); analog circuit (1220); digital circuit (1216); medium access control (MAC) controller (918); and processor (225) operably connected to the set of antennas, the analog circuit, the digital circuit, and the MAC controller. The processor is configured to decompose wideband waveform signals into a time-frequency waveform based on a sequence of sub-band signals; generate a time-frequency radar waveform based on the decomposed wideband waveform signals; map, based on the time-frequency radar waveform, a constant amplitude zero auto-correlation (CAZAC) sequence into orthogonal frequency division multiplexing (OFDM) sub-carriers to generate a first radar signal. A transceiver (210) is connected to the processor and configured to transmit, to a target object via a transmit antenna of the set of antennas, the first radar signal and receive, via a receive antenna of the set of antennas, a second signal that is reflected or backscattered from the target object.

The present disclosure relates to a method (300) for detection of a wake-up signal in a receiver (10), the method comprising: mixing a received signal with a local oscillator signal to obtain an intermediate frequency, IF, signal; obtaining a delayed IF signal based on the IF signal, by use of a tunable delay element (22); obtaining an exclusive OR, XOR, signal by use of an XOR gate (23) having the IF signal and the delayed IF signal as input signals and having the XOR signal as output signal; obtaining a baseband signal based on the XOR signal; tuning the tunable delay element (22) until at least one level peak of the baseband signal is found; and comparing the baseband signal with a known sequence. The present disclosure further relates to a device, and a receiver performing the method, to an apparatus comprising the receiver, and further to method and receiver for low power receiving of BFSK wake-up signals and apparatus thereof.

A method of a base station may comprise: mapping at least one port of the base station to each of a plurality of user equipments (UEs) to be overloaded; configuring overloading signatures for a code division multiplexing (CDM) scheme; mapping the overloading signatures with the plurality of UEs to be overloaded, respectively; transmitting a message including configuration information of the overloading signatures to the plurality of UEs; and transmitting, to the plurality of UEs, signals multiplexed by the CDM scheme using the overloading signatures.

A method for sending a DMRS is provided. A terminal determines a first sending power for sending a first DMRS on a first frequency resource is based on control information from a network device. The first frequency resource is a frequency resource corresponding to a first CDM group among frequency resources corresponding to a first symbol. The first sending power occupies at least part of a second sending power on a second frequency resource other than the first frequency resources among the frequency resources corresponding to the first symbol. The second frequency resource is not configured for sending a second DMRS. The terminal sends the first DMRS sent by the terminal on the first frequency resource based on the first sending power.

The present invention discloses a CDMA-based multi-transceiver PAM-5 channel multiplexing system and communication method. The system includes four transceivers and a differential transmission line channel multiplexed by the four transceivers. The transceivers are connected to an external microprocessor, with each transceiver connected to a different microprocessor. The microprocessor outputs a serial input signal and a clock signal to the transceiver. The transmitter circuit of the transceiver performs CDMA encoding and outputs the encoding result to the channel. The four encoding results form a PAM-5 signal on the channel. The receiver circuit of the transceiver converts the PAM-5 signal into a four-bit binary digital signal, integrates the four-bit binary digital signal to obtain a decoded output signal, and outputs the decoded output signal to the microprocessor connected to the transceiver, thereby enabling communication between the four microprocessors. This enables four transceiver circuits to transmit and communicate with each other simultaneously on the same transmission line, reducing communication costs.

This application provides a wireless communication method and apparatus. The method includes: A terminal device or a network device maps first data based on a first frequency hopping pattern, where the first frequency hopping pattern is one of K candidate frequency hopping patterns, one candidate frequency hopping pattern in the K candidate frequency hopping patterns includes L frequency hopping units, at least two candidate frequency hopping patterns in the K candidate frequency hopping patterns include a same frequency hopping unit, K is an integer greater than 1, and L is an integer greater than 1; and sends the first data to the network device or the terminal device. According to the method provided in this application, a quantity of available frequency hopping patterns can be increased, and a possibility of a conflict occurring when the terminal device or the network device transmits a signal is reduced.

Certain aspects of the present disclosure provide techniques for communicating a random access response (RAR) for codeword-based random access channel (RACH) communications. An example method for wireless communications by an apparatus includes sending a first signal in one or more first time-frequency resources associated with a RACH, wherein the first signal is multiplexed using a first codeword, the one or more first time-frequency resources and the first codeword defining a first preamble signature; receiving a RAR indicating the first codeword; and communicating with a network entity in response to receiving the RAR.

Certain aspects of the present disclosure provide techniques for codeword-based random access communications. A method for wireless communications by an apparatus includes sending a signal in one or more time-frequency resources of a random access channel (RACH), wherein the signal is multiplexed using a codeword, the one or more time-frequency resources and the codeword defining a preamble signature; and communicating with a network entity based at least in part on the signal.

Systems and methods a system for generating Low-Density Parity-Check (LDPC) code for enabling multiple simultaneous users in Asynchronous Scrambled Coded Multiple Access (ASCMA). The system includes transmitter node with source endpoints, each equipped with an encoder unit generating LDPC codeword bits from information bits. An encoder aggregates LDPC codeword bits with replicated information bits to create an aggregated sequence. A modulator unit modulates the sequence into a waveform for transmission over a shared spectrum access channel. The transmitted waveform is asynchronously sent to a receiver node, which includes a gateway linked to destination endpoints. The receiver unit captures a noise-corrupted version of the waveform, and a decoder unit, using soft-input and soft-output techniques, decodes information bits. A Multi-User Interference (MUI) estimator cancels interference levels, allowing the decoder to recover the original information bits associated with the source endpoints.

Logic may generate or detect communications including downlink control information (DCI) for scheduling demodulation reference signals (DM-RS). The DCI may include an antenna port field including an index value for identifying a set of one or more ports in a first code division modulation (CDM) group of the DM-RS. The DM-RS is used to include up to three CDM groups in up to two codewords in up to two symbols. The first CDM group may include a signal of the DM-RS for the first port multiplexed with the signal of the DM-RS for the second port based on a new frequency division orthogonal cover code (FD-OCC). The signal sub-length of the second port is orthogonal to the signal of the first port, where the first CDM group is compatible with demultiplexing via legacy FD-OCC. And logic may cause transmission of the DCI or demodulate and decode the DCI.

The present invention relates to a method and apparatus for modulation using a Zadov-Thu sequence. Each K-ary symbol to be transmitted is converted into a Zadov-Thu sequence with a preset length N and a preset root r, and its frequency offset q depends on the K-ary symbol. Various root values ​​can be used to separate different uplinks and downlinks and synchronous or asynchronous communications. The modulation device is implemented in the frequency domain. The present invention also relates to a demodulation method and apparatus for recovering the K-ary symbols thus transmitted. The demodulation device can be implemented in the time domain or the frequency domain.

Wireless communications systems and methods related user multiplexing with discrete Fourier transform (DFT) precoded frequency interlaces are provided. A first wireless communication device identifies a first block-spreading code from a set of block-spreading codes associated with user multiplexing. The first wireless communication device communicates, with a second wireless communication device using a frequency interlace in a frequency spectrum, a first communication signal including a first block of information symbols spread across a set of resource blocks (RBs) within the frequency interlace based on the first block-spreading code. The first communication signal is generated by block-spreading the first block of information symbols based on the first block-spreading code to produce a first block of spread information symbols, performing a DFT on the first block of spread information symbols, and mapping the first block of spread information symbols to the set of RBs.

To provide a technique capable of identifying each node while suppressing power consumption even when a plurality of nodes with which optical space communication will be performed are located at a relatively long distance.SOLUTION: A communication control device 1 includes acquisition means 11 that acquires a code sequence reflected by one of a plurality of nodes, demodulation means 12 that demodulates the code sequence using one of spreading codes with a different pattern for each node, and identification means 13 that identifies a node that corresponds to the spreading code used for demodulation among the plurality of nodes. When the pulse width of an optical signal is shorter than the sequence length of the code sequence, the acquisition means acquires a first partial sequence that is part of the code sequence generated while the node is receiving one optical signal, acquires a second partial sequence that is part of the code sequence generated while the node is receiving another optical signal, and generates a code sequence by combining the second partial sequence after the first partial sequence.SELECTED DRAWING: Figure 9

This application provides a communication method, apparatus, and system, and relates to the field of wireless communication, and in particular, to wake-up signal monitoring in a wireless communication system. A terminal device performs monitoring at a plurality of frequency domain positions when monitoring a wake-up signal, to increase a receiving rate of the wake-up signal. The method may include: receiving a first signal, where the first signal is used for time and / or frequency synchronization; and receiving first information at N frequency domain positions, where a modulation scheme of the first information is on-off keying OOK, the first information is carried in the N frequency domain positions, and N is an integer greater than 1.

A device configured to communicate in a wireless network modulates data symbols onto a sequence of code symbols to produce a transmit signal comprising linear combinations of the data symbols. Modulation includes performing a block transform on the data symbols to produce coded data symbols. The block transform multiplies each of the data symbols with one of a set of code vectors, wherein each of the code vectors comprises a different frequency. Subcarrier modulation is employed to modulate each coded data symbol onto a different subcarrier frequency to produce modulated subcarriers. The transmit signal comprises a sum of the modulated subcarriers. The block transform has dimension N×N, whereas the subcarrier modulation employs a transform having dimension K×N, where K>N.