181results about "Code division multiplex" patented technology

The disclosure relates to a 5G or 6G communication system for supporting a higher data transmission rate. A method performed by a terminal in a wireless communication system includes receiving, from a base station, configuration information on an orthogonal cover code (OCC), identifying a transport block (TB) and multiple slots for a TB processing, based on the configuration information, applying a different OCC sequence to each repetition of the TB, and transmitting, to the base station, a physical uplink shared channel (PUSCH).

Disclosed are methods, systems, and computer-readable medium to perform operations including: generating a mapping pattern that comprises a length-4 frequency division orthogonal cover code (FD-OCC4), the mapping pattern for mapping demodulation reference signals (DMRS) in frequency to a plurality of resource elements in at least one orthogonal frequency-division multiplexing (OFDM) symbol, wherein the DMRS are associated with a plurality of DMRS ports; mapping, using the FD-OCC4, the DMRS to the plurality of resource elements in the at least one OFDM symbol; and transmitting a transmission comprising the at least one OFDM symbol.

An internet of things (IoT) non-terrestrial network (NTN) device user equipment (UE) is described. The UE includes receiving circuitry configured to receive configurations on orthogonal cover code (OCC) multiplexing support and OCC multiplexing factor for narrowband internet of things (NB-IoT) narrowband physical uplink shared channel (NPUSCH) in a higher layer signaling. The receiving circuitry is also configured to receive a separately configured orthogonal cover code radio network temporary identifier (OCC-RNTI) and / or a number of repetitions table for a repetition number field in downlink control information (DCI) format 0 and to receive a DCI format N0 for a NPUSCH transmission with an OCC index indication. The UE also includes transmitting circuitry configured to transmit an NPUSCH with OCC multiplexing with the provided OCC multiplexing factor and the indicated OCC index on a schedule resource.

The disclosure relates to a 5G or 6G communication system for supporting a higher data transmission rate. A method performed by a terminal in a wireless communication system includes receiving, from a base station, configuration information on an orthogonal cover code (OCC), identifying a transport block (TB) and multiple slots for a TB processing, based on the configuration information, applying a different OCC sequence to each repetition of the TB, and transmitting, to the base station, a physical uplink shared channel (PUSCH).

This application relates to a UWB-based PPDU transmission method and an apparatus. The method includes: Two communication parties exchange a PPDU. The PPDU includes a first sequence. The first sequence is a ternary perfect sequence, and a periodic cross-correlation function of the first sequence and a second sequence belonging to a same sequence pair has a maximum of three different values. According to embodiments of this application, interference between devices can be reduced. This application is applied to a UWB-based WPAN system, a sensing system, or the like, including 802.15 series protocols, for example, the 802.15.4ab standard or a next-generation standard of 802.15.4ab. This application may be further applied to a WLAN system supporting 802.11 series protocols such as a next-generation Wi-Fi protocol of 802.11ax like 802.11be, Wi-Fi 7, or EHT, a next-generation protocol of 802.11be like Wi-Fi 8 or UHR, or Wi-Fi AI.

An internet of things (IoT) non-terrestrial network (NTN) device user equipment (UE) is described. The UE includes receiving circuitry configured to receive a separately configured orthogonal cover code radio network temporary identifier (OCC-RNTI) and / or a number of repetitions table for a repetition number field in downlink control information (DCI) format 0. The receiving circuitry may also be configured to receive a DCI format N0 for a narrowband physical uplink shared channel (NPUSCH) transmission with an OCC signaling including whether OCC is applied, and if OCC is applied, an OCC multiplexing factor and an OCC index. The UE also includes transmitting circuitry configured to transmit a NPUSCH with OCC multiplexing with the provided OCC multiplexing factor and the indicated OCC index on a schedule resource if OCC is indicated, or transmit an NPUSCH without OCC multiplexing on the schedule resource if OCC is not indicated.

An internet of things (IOT) non-terrestrial network (NTN) device user equipment (UE) is described. The UE includes receiving circuitry configured to receive configurations on orthogonal cover code (OCC) multiplexing support and OCC multiplexing factor for narrowband internet of things (NB-IOT) narrowband physical uplink shared channel (NPUSCH) in a higher layer signaling. The receiving circuitry is also configured to receive a separately configured orthogonal cover code radio network temporary identifier (OCC-RNTI) and / or a number of repetitions table for a repetition number field in downlink control information (DCI) format 0 and to receive a DCI format N0 for a NPUSCH transmission with an OCC index indication. The UE also includes transmitting circuitry configured to transmit an NPUSCH with OCC multiplexing with the provided OCC multiplexing factor and the indicated OCC index on a schedule resource.

A method and device for transmitting an EHT PPDU in a wireless LAN system is proposed. Specifically, a transmission STA generates an STF signal for a 320 MHz band. The transmission STA transmits an EHT PPDU including the STF signal to a reception STA. The STF signal is generated on the basis of an EHT STF sequence. The EHT STF sequence is a first sequence in which preconfigured sequence M is repeated, and is defined as {M 1 −M 0 −M 1 −M 0 −M −1 M 0 −M 1 −M 0 −M −1 M 0 M −1 M 0−M −1 M 0 −M 1 −M}*(1+j) / sqrt(2). Sqrt( ) represents a square root. Preconfigured sequence M is defined as M={−1, −1, −1, 1, 1, 1, −1, 1, 1, 1, −1, 1, 1, −1, 1}.

Embodiments of this application provide a communication method. The method includes: generating a first reference signal, where the first reference signal is two-dimensional orthogonal to a second reference signal, the second reference signal is a reference signal obtained after delay τ transform and Doppler frequency shift ν transform are performed on the first reference signal in a communication process, 0≤τ≤τmax, 0≤|ν|≤νmax, τ≠0 or ν≠0,τmax is a first threshold, νmax is a second threshold, and |x| represents an absolute value of x; and transmitting the first reference signal.

Systems, apparatuses, methods, and computer-readable media are provided for a user equipment (UE) for a wireless communication system. The UE determines at least one sidelink primary synchronization signal (S-PSS) sequence of at least one S-PSS signal. The at least one S-PSS sequence is different from a primary synchronization signal (PSS) sequence. The UE also determines at least one sidelink secondary synchronization signal (S-SSS) sequence of at least one SSSS signal. The UE determines a plurality of S-PSS symbols and a plurality of SSSS symbols corresponding to a sub carrier spacing (SCS). The UE transmits to another UE the determined plurality of S-SSS symbols after the determined plurality of S-PSS symbols. The SCS may be associated with a physical resource block (PRE) allocation size. A maximum of 11 PRBs for a sidelink synchronization signal block (S-SSB) may be set based on the SCS.

A transmission device according to one aspect of the present disclosure comprises: a control unit that generates a signal by performing encoding processing and scrambling processing on data using at least one model; and a transmission unit that transmits the signal by applying a multiplexing procedure thereto. The one aspect of the present disclosure makes it possible to carry out a suitable multiple access scheme.

A system and method for low power wake-up signaling and reception for primary radio wake-up and power saving is disclosed. The systems and methods may involve transmitting, by a User Equipment (UE), UE capability information corresponding to a capability of a Low Power Wake Receiver (LP-WUR) radio to receive an Orthogonal Frequency Division Multiplexing (OFDM) signal; receiving, by the UE, a low power wake-up signal (LP-WUS), the LP-WUS comprising first data in an on-off keying format and second data in an overlapping OFDM format, where the LP-WUS is based at least in part on the UE capability information; and activating, by the UE, the primary radio for receiving the wireless communication based on the received LP-WUS.

The invention relates to the technical field of wireless communication, and discloses a design method for a broadband Mesh networking communication terminal radio frequency module, which comprises the following steps: designing the overall structure of the radio frequency module, and optimizing the design of a receiving link, a transmitting link and a transceiving logic control unit based on a radio frequency chip. The transmitting link adopts a preceding-stage, middle-stage and final-stage three-stage power amplification structure and is provided with graded power headroom, and the core is that the transmitting-receiving logic control unit takes a radio frequency chip as a core and synchronously controls the radio frequency switch of the receiving link and the amplifier bias of the transmitting link through an SPI (Serial Peripheral Interface) bus; the radio frequency module designed by the method is high in output power, low in noise, high in reliability and strong in anti-interference capability, can be used for realizing quick and reliable switching of transmitting and receiving states and frequency point selection of a frequency hopping filter, and is integrated with a circulator standing wave protection mechanism to effectively absorb reflection power and protect a power amplifier. The radio frequency module designed by the method is high in output power, low in noise, high in reliability and strong in anti-interference capability; the method is especially suitable for high-speed frequency hopping broadband Mesh ad hoc network communication terminals.

A method and apparatus for satellite communication in a non-terrestrial network are provided. The method comprises: a first terminal device receiving first information sent by a network device, the first information being used for determining a first sequence; the first terminal device determines an uplink transmission resource in a first resource block according to the first sequence; wherein the first sequence is a sequence corresponding to the first terminal device in a first sequence set, the first sequence set comprises a plurality of mutually orthogonal sequences, the first terminal device is one of a plurality of terminal devices, and the plurality of terminal devices multiplex the first resource block based on the plurality of sequences.

In some embodiments, a transmitter may transmit a control signal in such a manner that the control signal may be processed using radio frequency (RF) analog operations at a receiver. The RF analog operation may be preferably selected for receivers with power budget and computational limitations. The control signal may be transmitted on a signal generated according to a plurality of parameters. The receiver may process the signal to identify the plurality of parameters. The receiver may use a mapping of parameters to control information to extract control information embedded in the control signal from the plurality of parameters.

A framework is provided for generating a MA signal based on modulating at least one first stream of bits using a first modulation type to generate at least one first modulated symbol from each of the at least one first stream of bits, spreading each of the at least one first modulated symbols using a spreading sequence that is specific to a respective first stream of bits to generate a second set of modulated symbols, mapping at least one of the second set of modulated symbols using a resource element mapping and transmitting the mapped second sets of modulated symbols as a MA signal. The spreading of each of the at least one first modulated symbols using a spreading sequence that is specific to a respective first stream of bits may use a layer specific spreading sequence and a layer specific sparsity pattern. The mapping of the at least one of the second set of modulated symbols to a resource element may use a user equipment (UE) specific and / or layer specific spreading sequence. The mapping of the at least one of the second set of modulated symbols to a resource element may use sparse spreading.

A method and an apparatus for transmitting a physical layer protocol data unit (PPDU) are provided. The method includes: generating a synchronization header field based on a first sequence or a third sequence, where a side lobe of a periodic cross-correlation function of the first sequence and a second sequence is a constant value, the first sequence is a binary sequence consisting of 1 and 0, the second sequence is a binary phase shift keying sequence corresponding to the first sequence, a side lobe of a periodic autocorrelation function of the third sequence is a constant value, and the third sequence is a binary phase shift keying sequence consisting of 1 and −1; and sending the PPDU on a target channel, where the PPDU includes the synchronization header field.

In an aspect, a UE receives an SRS configuration that indicates, for at least one frequency hop, an allocation of less than all subcarriers of a sounding bandwidth to SRS per OFDM symbol in a respective frequency hop. The UE transmits, to a BS in a first frequency hop, OFDM symbols with SRS across all subcarriers of a first sounding bandwidth associated with the first frequency hop. In another aspect, the UE receives an SRS configuration that indicates, for frequency hops associated with the same comb-type, a sequence of resource element offsets that is based on a number of OFDM symbols used in the respective frequency hop. The UE transmits OFDM symbols with SRS in accordance with the sequence of resource element offsets indicated by the SRS configuration for the respective frequency hop.

The invention relates to the technical field of unmanned aerial vehicles, and discloses an unmanned aerial vehicle identification method and device and a storage medium, and the method comprises the steps: obtaining a to-be-searched sequence of an OFDM signal of an unmanned aerial vehicle; generating a first ZC search sequence based on a preset length and a preset root value; determining a first position of a PSS sequence from the to-be-searched sequence according to the first ZC search sequence; determining a first to-be-searched sequence and a second to-be-searched sequence from the to-be-searched sequences according to the first position of the PSS sequence; generating a plurality of second ZC search sequences based on a preset length and each root value in a preset root value range; determining a root value of the SSS sequence according to the plurality of second ZC search sequences and the first to-be-searched sequence; determining a root value of the BS sequence according to the plurality of second ZC search sequences and the second to-be-searched sequence; and identifying the unmanned aerial vehicle according to the root value of the SSS sequence and the root value of the BS sequence. In this way, the accuracy of unmanned aerial vehicle identification is improved.

Various examples of embodiments described herein relate to apparatuses and methods for transmitting payload based on Zadoff Chu sequences or m-sequences. One such example of an embodiment relates to an apparatus, comprising at least one processor, and at least one memory storing instructions that, when executed by the at least one processor, cause the apparatus at least determine a set of phase ramp values for transmission of a payload via an m-sequence; generate an m-sequence for transmission of a payload based on at least one of a number of allocated resources and the payload to be transmitted, determine a phase ramp based on the determined set of phase ramp values, and transmit the generated m-sequence with the determined phase ramp.

Various aspects directed towards generating a reference signal for pi / 2-binary phase shift keying (BPSK) modulation are disclosed. In an example, a pi / 2-BPSK sequence is selected from a plurality of candidate sequences depending on the number of allocated Resource Blocks. The selection is between Computer Generated Sequences for small length and Gold or Zadoff-Chu (ZC) sequences for long length. A reference signal is then generated based on the selected pi / 2.BPSK sequence such that the reference signal is associated with an uplink DFT-s-OFDM transmission of data modulated according to a π / 2-BPSK modulation.

The application provides a multi-target user detection synchronization method, system and storage medium based on a sweep frequency spread spectrum carrier modulation technology. A transmitting end preferably constructs a Gold sequence as a spread spectrum code by using an m sequence, modulates the Gold sequence on a periodic linear sweep frequency carrier in a BPSK mode by using an S2C modulation mode, and forms a synchronization header signal with a sharp autocorrelation peak and a low cross-correlation side lobe. A receiving end preliminarily positions the synchronization header by correlation detection, and then performs a de-skew processing on the received signal, multiplies the received signal with a local linear frequency modulation reference signal, and performs a band pass filtering, so as to convert the wideband sweep frequency signal into a single frequency signal, and greatly reduce the processing complexity. On this basis, the coarse synchronization utilizes the correlation detection combined with the maximum likelihood method to preliminarily time in the time domain, and the fine synchronization finely adjusts according to the frequency characteristics of the de-skewed signal. The method can still realize the robust multi-target signal detection and high-precision positioning in a complex underwater acoustic multipath environment, and has good engineering practicability.

Embodiments of this application provide a communication method and an electronic device. In the method, the electronic device may determine whether a first data frame and a second data frame need to be transmitted concurrently, where the first data frame is used by the electronic device to perform positioning, and the second data frame is used by the electronic device to perform radar sensing; and when the first data frame and the second data frame need to be transmitted concurrently, transmits a third data frame, where the third data frame includes content of the first data frame and content of the second data frame. In embodiments of this application, a frame structure in which a radar frame and a positioning frame coexist is designed.

This application discloses a synchronization signal sending method and a related device, so as to reduce correlation between a secondary synchronization signal and a primary synchronization signal, and reduce interference to the primary synchronization signal. The method in this application includes: generating, by a network device, a first synchronization signal sequence and a second synchronization signal sequence, where the first synchronization signal sequence is a sequence obtained based on a first m-sequence, the second synchronization signal sequence is a sequence obtained based on a Gold sequence, the Gold sequence is generated based on a second m-sequence and a third m-sequence, and a generator polynomial of the first m-sequence is the same as a generator polynomial of the second m-sequence; mapping, by the network device, the first synchronization signal sequence onto M subcarriers in a first time unit to obtain a first synchronization signal, and mapping the second synchronization signal sequence onto M subcarriers in a second time unit to obtain a second synchronization signal, where M and N are positive integers greater than 1; and sending, by the network device, the first synchronization signal and the second synchronization signal.

The embodiment of the invention provides a communication method and a communication device. The method includes: receiving a wakeup signal (Wake-up signal, WUS) in a first mode, a parameter of the WUS being associated with a location identifier; and transitioning from a first mode to a second mode in accordance with the parameter of the WUS and a location identifier of a receiving device, the location identifier of the receiving device indicating a location of the receiving device. One or more of the receiving devices (nodes) associated with the location identifier may use the same WUS for the WU process. In other words, the WUS in the WUS pool can be used by more nodes without adding a new WUS. Thus, the WU process may be provided for a large number of nodes without reducing performance or increasing resource overhead.

The embodiment of the invention provides an information acquisition method, if a DMRS is generated based on a ZC sequence, a root and / or cyclic shift amount corresponding to the ZC sequence is acquired, a target parameter corresponding to a single carrier SSB is carried through the root and / or cyclic shift amount, and the target parameter can be one or more of a cell identifier, an SSB index and a half-frame indication. That is, the amount of root and / or cyclic shift correlates with the value of the target parameter. In addition, the amount of root and / or cyclic shift also correlates with the length of the sequence corresponding to the DMRS. And if the DMRS is generated based on the pseudo-random sequence, obtaining related information corresponding to the pseudo-random sequence, and carrying a target parameter corresponding to the single carrier SSB through the related information. Wherein the related information comprises one or more of the initial value, the generator polynomial or the offset, and the related information is related to the value of the target parameter. Visibly, in the single carrier SSB, information related to the single carrier SSB is carried through the DMRS.