393results 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).

This application discloses a resource configuration method, a resource determining method and apparatus, a communication device, and a storage medium, and belongs to the field of communication technologies. The resource configuration method in embodiments of this application includes: configuring, by a signal sending node, a first resource based on a predetermined first array, where the first array includes at least one Costas array or at least one Costas array set, and each Costas array set includes at least one Costas array; and sending, by the signal sending node, a first signal by using the first resource.

The invention discloses an unmanned aerial vehicle image transmission signal frequency and bandwidth estimation method and device, and the method comprises the steps: carrying out the segmentation interception of a received signal, and obtaining a signal segmentation sequence; performing preliminary screening on the signal segments by using the frequency spectrum conjugate symmetry of the ZC sequence; carrying out delay correlation processing on the primarily screened signal segments to obtain a delay correlation result sequence, taking an index value corresponding to the maximum modulus value of the delay correlation result sequence as an initial index, and obtaining a signal segment containing a ZC sequence; zC sequences under different bandwidths stored locally are obtained, conjugate multiplication is carried out on the ZC sequences and signal fragments containing the ZC sequences, whether the signals are image transmission signals of the unmanned aerial vehicle or not is determined according to frequency spectrum module value peaks of conjugate multiplication results, and meanwhile the center frequency and the bandwidth of the image transmission signals are obtained. According to the invention, the signals are intercepted in a segmented manner, and the peak-to-average ratio is used for rapid preliminary screening, so that the real-time performance is significantly improved; robustness and accuracy are greatly enhanced through a double-confirmation mechanism, calculation is efficient, and the method has good application prospects.

The present disclosure relates to a communication method and system for converging a 5th-Generation (5G) communication system for supporting higher data rates beyond a 4th-Generation (4G) system with a technology for Internet of Things (IoT). The present disclosure may be applied to intelligent services based on the 5G communication technology and the IoT-related technology, such as smart home, smart building, smart city, smart car, connected car, health care, digital education, smart retail, security and safety services. The present invention relates to a method and an apparatus for estimating an uplink channel of a base station in a wireless communication system, comprising the steps of: estimating a position of a wireless channel tap on the basis of a sounding reference signal (SRS) received from a terminal; determining an average power value of the wireless channel tap for each link between a transmitting antenna and a receiving antenna from and to which the SRS is transmitted; and estimating an effective channel frequency response (effective CFR) of a physical uplink shared channel (PUSCH) on the basis of the position of the wireless channel tap and the average power value of the wireless channel tap.

This disclosure provides systems, methods and apparatus, including computer programs encoded on computer storage media, for interference reduction techniques between passive wireless devices. In some aspects, a source device, a reader device, or a passive wireless device may support one or more interference avoidance mechanisms according to which the reader device may experience less interference from other devices within a system or may more accurately decode messaging that is meant for the reader device from the radio frequency signaling received at an antenna of the reader device, or both. In some implementations, multiple passive wireless devices may each add or apply a respective communications signature to a reflected or backscattered signal from that passive wireless device. The respective communications signatures may uniquely identify backscattered signaling from a specific passive wireless device such that a reader device may parse through received signaling and extract and decode a relevant message.

Some aspects of the present disclosure provide methods and devices that enable a framework for selection or configuration, or both, of a waveform for use in integrated sensing and communications (ISAC). Use of the framework provides a new waveform, based in part on various criteria, which provides a trade-off among different ISAC requirements. Therefore, when different criteria are important for a particular implementation, a waveform that best meets the requirement of those criteria may be used. The various criteria may include factors such as hardware constraints at the UE, radio frequency (RF) chirp generation or detections capability at the UE, spectral emission or leakage such as OOBE, sensing performance, and sensing complexity. In some embodiments, a cyclic prefix (CP) is provided to use the chirp-based sensing waveforms as a demodulated reference signal (DMRS). In some embodiments, the CP enables alignment with a communication signal frame.

Various aspects of the present disclosure relate to transmitting a first random access configuration comprising code domain information and receiving a first set of random access transmissions from a set of internet-of-things (IoT) devices, each random access transmission of the first set of random access transmissions multiplexed according to the code domain information. Aspects of the present disclosure may relate to transmitting a second random access configuration to a subset of IoT devices of the set of IoT devices based at least in part on a collision between a subset of random access transmissions of the first set of random access transmissions, where the subset of random access transmissions is associated with the subset of IoT devices, and receiving a second set of random access transmissions based on the second random access configuration.

A sequence transmission method and an apparatus are provided, which may be applied to a downlink synchronization scenario, a random access scenario, a sensing scenario, a radar scenario, an integrated sensing and communication scenario, or the like, to increase sequence design diversity, and improve sequence design flexibility and target detection accuracy. The method includes: A transmit end apparatus determines N first sequences, and sends the N first sequences. An nth first sequence in the N first sequences is determined based on an nth second sequence in N second sequences, formula (I), am is a prime number, M is a positive integer greater than 1, and n=0,1, . . . , N−1. Each second sequence is a sequence in a Golay complementary pair GCP. The N second sequences include formula (II) first sub-sequence sets, each first sub-sequence set includes am second sub-sequence sets, each second sub-sequence set includes formula (III) second sequences, m=0,1, . . . , M−1, and a−1=1.

Aspects relate to enhancing communication between network entities and ambient IoT devices using a cyclic prefix (CP) transparent on-off keying (OOK) waveform. An ambient IoT device may be configured to receive an OOK orthogonal frequency-division multiplexing (OFDM) waveform that includes a CP. The ambient IoT device may be configured to sample symbols of the received OOK OFDM waveform at a pre-defined sampling rate. The pre-defined sampling rate may be based upon a pre-defined duration of the symbols of the received OOK OFDM waveform. In particular, the pre-defined duration of each of the symbols of the received OOK OFDM waveform may be defined such that a last OOK OFDM symbol duration is set to be the same as a first OOK OFDM symbol duration, in which, the first OOK OFDM symbol includes the CP.

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.

This application discloses a phase tracking reference signal transmission method and apparatus, a terminal, and a network-side device. The phase tracking reference signal transmission method of the embodiments of this application includes: determining, by a terminal, a transmission parameter for a PTRS; and sending, by the terminal, the PTRS based on the transmission parameter, or receiving, by the terminal, the PTRS based on the transmission parameter.

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.

Methods and apparatuses for port adaptation indication are provided. A UE may receive a configuration associated with a channel state information (CSI) report. wherein the configuration indicates a number of ports for the CSI report (611): receive an indication associated with port adaptation (613): and generate the CSI report based on the configuration and the indication (615).

Provided in the present application are a method and apparatus for uplink capacity enhancement in an NR NTN system. The method comprises: receiving at least one of the following pieces of information: first information, which is used for determining an orthogonal cover code (OCC) scheme for a physical uplink shared channel (PUSCH); second information, which is used for determining an OCC sequence table used for the PUSCH; and third information, which is used for determining an OCC sequence from the OCC sequence table; and sending the PUSCH.

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.

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}.

There is disclosed a method of operating a transmitting radio node for a wireless communication network. The method includes transmitting synchronisation signaling in a synchronisation time interval, the synchronisation signaling comprising secondary synchronisation signaling, the secondary synchronisation signaling spanning two or more allocation units of the synchronisation time interval. The disclosure also pertains to related devices and methods.

Embodiments of the present disclosure disclose devices, methods and apparatuses for a beam reporting. A first terminal device receives a plurality of sidelink (SL) positioning reference signal (PRS) configurations from a plurality of terminal devices. The first terminal device determines, based on the plurality of SL PRS configurations, whether the plurality of terminal devices select overlapping resources for a plurality of SL PRS transmissions. Based on determining that the plurality of terminal devices select overlapping resources for the plurality of SL PRS transmissions, the first terminal device transmits, to a second terminal device among the plurality of terminal devices, a request to update an SL PRS transmission by the second terminal device.

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.

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.

Communication systems, apparatuses, methods, and one or more non-transitory computer-readable storage devices for cooperative sensing in integrated communication and sensing employs the steps of: determining a type of a first communication node for object sensing, and notifying the first communication node the determined type. Said determining the type of the first communication node has the steps of: determining the type of the first communication node as a sensing transceiving node in a sensing transceiving set to receive or transmit a sensing signal for object sensing, or determining the type of the first communication node as a sensing active node in a sensing active set, the sensing active set comprising the sensing transceiving set.

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.

This disclosure provides a method and system for jointly estimating the LO leakage and quadrature error parameters of a transmitter RF front-end (e.g., a direct upconversion transmitter RF front-end). The proposed method utilizes a PN sequence inserted at the transmitter baseband. On the receiver side, an RX accumulator is implemented to sum the receiver signal to utilize the despreading gain from the same PN sequence from the transmitter side. Through the despreading process, the receiver-transmitter channel can be estimated and used to extract the quadrature error parameters. The estimated channel can also be used to eliminate user data interference presented in the RX accumulator output, which can be further used to calculate the LO leakage.

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.

An integrated circuit for a pen includes reception circuitry configured to receive an uplink signal and transmission circuitry configured to transmit a downlink signal based on a reception timing of the uplink signal and a command included in the uplink signal. In a case where the reception circuitry receives a first uplink signal that is in a first state (e.g., normal state) in a first period, the transmission circuitry transmits the downlink signal including data according to the command included in the first uplink signal. In a case where the reception circuitry fails to receive the first uplink signal that is in the first state in a second period later than the first period, the transmission circuitry transmits the downlink signal including data according to the command included in the first uplink signal received in the first period.