156results about "Code shifting or hopping" patented technology

Disclosed are techniques for wireless communication. In an aspect, a user equipment (UE) receives a sounding reference signal (SRS) configuration, the SRS configuration including one or more parameters defining an SRS resource, receives a cyclic shift hopping parameter for SRS transmissions, and transmits an SRS on the SRS resource, the SRS configured according to at least the cyclic shift hopping parameter.

A method includes receiving, at a user equipment device (UE) from a transmission and reception point (TRP), an uplink CSI measurement configuration including a sounding reference signal (SRS) resource configuration indicating one or more of SRS resource randomization configurations of a cyclic shift, a comb offset, and a time domain orthogonal cover code (TD-OCC); and transmitting SRSs in a sequence of symbols, according to the SRS resource configuration, wherein the SRSs are determined according to the one or more of SRS resource randomization configurations of the cyclic shift, the comb offset, and the TD-OCC, values of the one or more of SRS resource randomization configurations being randomized symbol-by-symbol according to at least one of a cell-specific identity (IDcell) and a UE-specific identity (IDue).

Embodiments herein provide techniques for transmission of a physical uplink control channel (PUCCH) in a wireless cellular network. For example, transmission schemes are provided for sequence-based transmission of a PUCCH and / or to improve PUCCH coverage. User equipment (UE) may: determine uplink control information (UCI) pay load information for the PUCCH with a PUCCH format 1; determine a sequence for transmission of the PUCCH based on the UCI pay load information; and map the determined sequence to allocated resources for the PUCCH format 1 for transmission.

A method includes performing channel encoding on a plurality of information bits to obtain a codeword that includes a plurality of code bits; segmenting the codeword into a plurality of segments of code bits; performing the following for each of the plurality of segments of code bits of the codeword: selecting, based on the segment of code bits, a set of channel resources, wherein each set of channel resources is selected among a plurality of sets of channel resources, wherein each of the sets of channel resources includes a unique combination of channel resources including one or more of a selected base sequence, a cyclic shift and a selected set of frequency domain resource elements; mapping the selected base sequence onto the selected set of frequency domain resource elements; and transmitting the selected and frequency mapped base sequence via an OFDM symbol.

This terminal comprises: a control circuit that determines one sequence or one combination from a plurality of sequences or a plurality of combinations of sequences, depending on information regarding the number of information bits in uplink transmission without reference signals; and a transmission circuit that transmits one sequence or a sequence included in one combination.

A sensing-based communication method and an apparatus are provided, which are applied to a UWB-based WPAN system, for example, the 802.15.4a protocol, the 802.15.4z protocol, the 802.15.4ab protocol, or the like in 802.15 series protocols; and may be further applied to a WLAN system, a sensing system, and the like in 802.11 series protocols including a next-generation Wi-Fi protocol of 802.11ax like 802.11be, Wi-Fi 7, or EHT, and a next generation of 802.11 be like Wi-Fi 8, or UHR. A transmit end obtains control information, and sends a sensing signal based on the control information. Correspondingly, a receive end obtains the control information, and performs processing based on the control information. The control information indicates M cyclic 10 shift bit quantities corresponding to M sequences, and at least two relative cyclic shift bit quantities in relative cyclic shift bit quantities between adjacent sequences in the M sequences are different.

systems and methods include a transmitter with a control unit that is configured to generate a code, including data identifying a plurality of regions and a transmitter-specific cyclic shift scheme. The cyclic shift scheme results in a re-arrangement of the regions (using a change of time offset) that is different (transmitter-specific) for each of the transmitters. The transmitter generates a signal based on the code and transmits the signal via an antenna. The radar system includes a receiver configured to receive an echo of the signal via a second antenna that is reflected from a target and identifies the transmitter from the echo based on the transmitter-specific cyclic shift scheme.

A communication method and a communication device, comprising: determining a first physical serial number according to a first logical serial number and a first mapping relationship, and sending a first sequence, the first sequence being determined according to the first physical serial number. Wherein the first mapping relation is used for indicating the corresponding relation between the physical sequence numbers and the logic sequence numbers of the cubic polynomial index sequences, and the cubic term coefficients of the cubic polynomial index sequences corresponding to the physical sequence numbers are the same; the maximum value of the cross-ambiguity function of the cubic polynomial exponential sequence corresponding to the plurality of continuous physical serial numbers is smaller than or equal to the first threshold value, and the logical serial number is used for indicating the position index of the physical serial number, so that the sequence capacity can be improved, the configuration efficiency of the sequence resource can be improved, and the transmission requirement of the terminal equipment can be met.

This application discloses a communication method and apparatus. The method includes: A terminal device receives indication information, where the indication information indicates M combinations, and each combination includes one CS value and one comb offset value; or each combination includes a hopping value of one CS value and a hopping value of one comb offset value, where M is a positive integer. Then, the terminal device determines, based on the indication information, a first pseudo-random sequence, and a first time unit, a target CS value and a target comb offset value that correspond to a reference signal in the first time unit. Then, the terminal device sends the reference signal in the first time unit based on the target CS value and the target comb offset value.

Methods, systems, and devices for designing and configuring reference signals in wireless communication systems are disclosed. An example method for wireless communication includes transmitting, by a wireless device to a network node, a sounding reference signal (SRS), where the SRS is determined by a first parameter and a cyclic shift parameter, and a value of the first parameter hops at a level of a first type of time unit and a value of the cyclic shift parameter hops at a level of a second type of time unit. Another example method for wireless communication includes receiving, by a wireless device from a network node, a configuration for an SRS resource, and transmitting an SRS in the SRS resource, where the configuration includes information associated with one or more time-domain orthogonal cover codes (TD-OCC) or a multiplexing type for multiple SRS ports in the SRS resource.

A PPDU-based communication method and an apparatus are disclosed One example method includes: A transmit end generates a PPDU based on a mapping relationship between a data symbol and a chip sequence, and sends the PPDU; and correspondingly, a receive end receives the PPDU, and then processes the PPDU based on the mapping relationship, where a minimum Hamming distance is greater than or equal to L / 2.

The present disclosure relates to a method, device and system for sending or receiving an uplink control channel. A terminal of a wireless communication system is disclosed. The terminal includes a communication module and a processor for controlling the communication module. The processor: determines a first cyclic shift (CS) value based on hybrid automatic repeat request confirmation (HARQ‑ACK) information, which indicates a response to a downlink channel received from a base station; determines a cyclic shift (CS) offset based on request information indicating a request sent by the terminal to the base station; determines a second CS value based on the first CS value and the CS offset, the second CS value indicating the degree of cyclic shifting of a basic sequence for a physical uplink control channel (PUCCH); and sends a PUCCH for simultaneously transmitting request information and HARQ‑ACK information by using a sequence generated by cyclically shifting the basic sequence based on the second CS value.

Various aspects relate to techniques and methods for sequence-based non-coherent wireless channel transmission of a payload on a physical uplink channel. A transmitter converts information bits of a payload to be transmitted into decimal integer values, which in turn are used to generate a modified maximal sequence (m-sequence) based on one or more predetermined parameters, such as an m-sequence generator polynomial, a starting position in the sequence, and initialization. The generated modified m-sequence is modulated using a modulation scheme such as π / 2 binary phase shift keying and quadrature phase shift keying for transmission on a physical uplink channel.

A sensing-based communication method and an apparatus are provided, which are applied to a UWB-based WPAN system, for example, the 802.15.4a protocol, the 802.15.4z protocol, the 802.15.4ab protocol, or the like in 802.15 series protocols; and may be further applied to a WLAN system, a sensing system, and the like in 802.11 series protocols including a next-generation Wi-Fi protocol of 802.11ax like 802.11be, Wi-Fi 7, or EHT, and a next generation of 802.11be like Wi-Fi 8, or UHR. A transmit end obtains control information, and sends a sensing signal based on the control information. Correspondingly, a receive end obtains the control information, and performs processing based on the control information. The control information indicates M cyclic shift bit quantities corresponding to M sequences, and at least two relative cyclic shift bit quantities in relative cyclic shift bit quantities between adjacent sequences in the M sequences are different. This effectively improves accuracy of a sensing result.

A non-coherent communication system in which a transmitting device does not transmit a pilot / DMRS, such that the receiving device may be configured to determine or decode the information received from the transmitting device without performing any channel estimation. An apparatus for wireless communication at a receiving device receives, from a transmitting device, a non-coherent signal having data. The apparatus may determine data from the received signal without performing a channel estimation. In another aspect, an apparatus at a transmitting device divides an information payload including a set of bits into multiple subsets of bits, maps each of the multiple subsets of bits into a respective sequence of complex symbols, generates a non-coherent transmission signal based on the respective sequences, and transmits the non-coherent transmission signal to a receiving device.

A data transmission method and a communication apparatus are provided. The data transmission method includes: A terminal device and a network device each determine a first sequence number of the terminal device on a first time-frequency resource, and determine, from a signature sequence set, a first signature sequence corresponding to the first sequence number, where a difference between quantities of sequence numbers corresponding to any two signature sequences in the signature sequence set is less than or equal to a first value, and sequence numbers corresponding to any two signature sequences in the signature sequence set are different. The terminal device sends data on the first time-frequency resource by using the first signature sequence. Correspondingly, the network device receives the data on the first time-frequency resource. The network device decodes the data based on the first signature sequence. According to embodiments of this application, a centralized collision of signature sequences can be avoided, and a degree of distinguishing between terminal devices by using the signature sequences can be improved.

A transmitter according to one aspect of the present invention generates a pulse code train by encoding transmission information according to assignment of each of one or more pulse code trains to a respective codeword, and transmits the generated pulse code train. Each of the one or more pulse code trains includes four or more pulses. Each of the one or more pulse code trains is designed so that any pair of the one or more pulse code trains has a maximum of two common pulses under all possible shifts of a discrete number of time slots. This makes it possible to provide a communication technique that can be expected to improve the data rate in data communication by a large number of devices.

A method for operating a first communication node, in one embodiment of a communication system, comprises the steps of: generating a first binary sequence and a second binary sequence; generating, on the basis of the first and second binary sequences and a BPSK operation, a first intermediate sequence having 2N elements; generating, on the basis of an operation on the elements of the first intermediate sequence, a first signal sequence including N elements; mapping, to N subcarriers, first modulation symbols generated by modulating the first signal sequence; and transmitting a first signal including the mapped first modulation symbols, wherein the first and second binary sequences are generated on the basis of generator polynomials of which the maximum order is p+1, wherein p is a natural number and N can be a natural number having a value of (2p−1).

This disclosure provides systems, methods, and apparatus, including computer programs encoded on computer-readable media, for wireless range extension for communication in a wireless local area network (WLAN). In some aspects, a first WLAN device and a second WLAN device may exchange one or more management frames advertising support for a non-orthogonal frequency-division multiplexing (non-OFDM) data rate for communications via one or more non-2.4GHz bands. In some aspects, the non-OFDM data rate may be a data rate of a plurality of data rates associated with an IEEE 802.11b standard, and the one or more non-2.4GHz bands may include one or more of a 3.5GHz band, a 5GHz band, a 6GHz band, a 45GHz band, and a 60GHz band. The first and second WLAN devices may select the non-OFDM data rate and at least one of the non-2.4GHz bands for exchange data communications.

Embodiments of this application provide a communication method, a communication apparatus, and a communication system. The method may include: A first apparatus obtains a cyclic shift sequence, where the cyclic shift sequence includes a delay domain cyclic shift and a Doppler cyclic shift; and outputs the cyclic shift sequence, where the cyclic shift sequence is used to generate a random access signal or a sensing signal. According to embodiments of this application, a capacity of available sequences can be increased by performing cyclic shifts in delay domain and Doppler domain.

To appropriately control interference in an uplink control channel that includes 1-2 bits of uplink control information.SOLUTION: In a terminal 200, a control unit 209 determines a sequence to be used for an uplink control channel in response to uplink control information, and a transmission unit 214 transmits the uplink control information using the sequence. Here, the sequence is calculated using cell identification information that identifies a cell to which the terminal 200 belongs, and sub-cell specific information related to at least one sub-cell included in the cell.SELECTED DRAWING: Figure 4

Disclosed is a method for transmitting a measurement reference signal. The method includes: acquiring port information corresponding to a measurement reference signal according to at least one of received signaling information or an agreed rule; and transmitting the measurement reference signal according to the port information. Also disclosed are a method and device for sending signaling information, a method and device for receiving signaling information, a method for transmitting an uplink reference signal, a device for transmitting a measurement reference signal, an electronic device, and a storage medium.

A terminal device obtains coding information that includes a first information bit and a second information bit. The terminal device selects, based on the first information bit, K groups from a codebook having L groups as activation groups, where both L and K are positive integers, and K is less than L. The terminal device then selects, based on the second information bit, a sequence from each of the activation groups as an activation sequence, and obtains a first sequence by superimposing the K activation sequences.

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.

The embodiment of the invention is applied to a wireless local area network system supporting an IEEE (Institute of Electrical and Electronic Engineers) 802.11 ax next-generation Wi-Fi (Wireless Fidelity) protocol, such as 802.11 bebe, Wi-Fi (Wireless Fidelity) 7 or EHT, 802.11 bebe next generation, Wi-Fi 8 and other 802.11 series protocols, and can also be applied to a UWB (Ultra Wideband)-based wireless personal local area network system and a sensing system. The embodiment of the invention provides a signal processing method and device, and the method comprises the steps: receiving a first signal obtained according to a spread spectrum sequence set and N data symbols, the spread spectrum sequence set comprises M spread spectrum sequences with the length being L, and the M spread spectrum sequences are in one-to-one correspondence with M data symbols with different values, the values of the first chips of any two spread spectrum sequences in the M spread spectrum sequences are the same; and performing frequency offset estimation according to the first signal. According to the invention, the first signal comprises the fixed signal segment, so that the receiving end equipment can carry out frequency offset estimation according to the first signal.

A communication method and device based on a PPDU can be applied to a system supporting an 802.15 standard system, such as a 802.15. 4a protocol, a 802.15. 4 z protocol or a 802.15. 4 ab protocol, a 802.15. 4a protocol, a 802.15. 4 z protocol or a 802.15. 4 ab next-generation protocol and the like, and a wireless local area network system of 802.11 series protocols such as a 802.11 be next-generation protocol, Wi-Fi and the like, and can also be applied to a UWB-based wireless personal local area network system, a sensing system and the like. The method comprises the following steps: a sending end generates a PPDU based on a mapping relationship between a data symbol and a spread spectrum sequence, and sends the PPDU; correspondingly, the receiving end receives the PPDU, and then processes the PPDU based on the mapping relation; wherein the minimum Hamming distance is greater than or equal to L / 2. By increasing the minimum Hamming distance, the bit error rate is effectively reduced.

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.

A PPDU-based communication method and an apparatus are applicable to a wireless local area network system that supports an 802.15 standard, for example, 802.15.4a, 802.15.4z, 802.15.4ab, a next-generation protocol of 802.15.4a, 802.15.4z, or 802.15.4ab, or 802.11 series protocols such as a next generation of 802.11 be like Wi-Fi 8, or may be applied to a UWB-based wireless personal area network system, a sensing sensing system, or the like. The method includes: A transmit end generates a PPDU based on a mapping relationship between a data symbol and a chip sequence, and sends the PPDU; and correspondingly, a receive end receives the PPDU, and then processes the PPDU based on the mapping relationship, where a minimum Hamming distance is greater than or equal to L / 2. The minimum Hamming distance is increased, so that a bit error rate is reduced effectively.