16results about "Multiplex code application" patented technology

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.

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.

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.

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 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.

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.

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.

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.

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.

Certain aspects of this disclosure provide techniques for conveying a Random Access Response (RAR) for codeword-based Random Access Channel (RACH) communication. An example method for wireless communication by a device includes: transmitting a first signal in one or more first time-frequency resources associated with the 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.

A terminal according to one aspect of the present disclosure comprises: a reception unit that receives a setting for a demodulation reference signal (DMRS) of a shared channel; and a control unit that, on the basis of the setting, applies to the DMRS N consecutive elements in a Walsh matrix as an orthogonal cover code (OCC). An embodiment of the present disclosure makes it possible to use a suitable number of DMRS ports.

A wireless communication receiver including a serial to parallel converter receiving an radio frequency signal, a fast Fourier transform device connected to said serial to parallel converter converting NFFT corresponding serial signals into a frequency domain; an EZC root sequence unit generating a set of root sequence signals; an element-by-element multiply unit forming a set of products including a product of each of said frequency domain signals from said fast Fourier transform device and a corresponding root sequence signal, an NSRS-length IDFT unit performing a group cyclic-shift de-multiplexing of the products and a discrete Fourier transform unit converting connected cyclic shift de-multiplexing signals back to 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.

In accordance with an example embodiment of the present invention, there is at least one method and apparatus to perform receiving or determining at least one of a beacon, a synchronization signal, or a reference signal, the at least one of the beacon, the synchronization signal, or the reference signal comprising an indication of a paging occurrence, wherein at least one of the beacon, the synchronization signal or the reference signal comprises a pseudo noise sequence as an indication of paging occurrence, and wherein the at least one of the beacon, the synchronization signal or the reference signal is addressed to all user equipments in a group or a subset of user equipments in at least one cell of the communication network, and wherein at least one of the beacon, synchronization signal, or reference signal comprises paging arrival for a common cause, and wherein at least one user equipment in the one or a subset of user equipment is in one of sleep mode or shutdown; and wherein there is wakeup or boot from a sleep mode to decode at least one of the beacon, the synchronization signal or the reference signal and receive paging occurrences based on at least one of the beacon, the synchronization signal or the reference signal.

A terminal according to one aspect of the present disclosure includes a receiving section that receives a configuration of a demodulation reference signal (DMRS) of a shared channel, and a control section that applies N consecutive elements in a Walsh matrix to the DMRS as an orthogonal cover code (OCC), based on the configuration. According to one aspect of the present disclosure, an appropriate number of DMRS ports can be used.