99results about "Code shifting or hopping" patented technology

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.

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.

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.

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.

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.

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.

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.

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.

Various additional and alternative aspects are described herein. In some aspects, the present disclosure provides a method of communication by an apparatus. The method includes selecting one or more resources for transmitting data of a first data stream based on an acyclic graph. The selected resources conform to the acyclic graph comprising data streams at odd levels of the acyclic graph and resources at even levels of the acyclic graph. The acyclic graph includes edges between each level of the acyclic graph. The edges connect the resources allocated to each data stream. The method further includes transmitting the data of the first data stream on the selected one or more resources.

This application discloses a synchronization signal design scheme, processing device, and system, which can be applied to, for example, new wireless systems. A first cyclic shift and a second cyclic shift are determined at least based on a cell identifier, wherein at least one of the first cyclic shift and the second cyclic shift is associated with the primary synchronization signal sequence. A secondary synchronization signal sequence is generated based on a first binary sequence that has been cyclically shifted by the first cyclic shift and a second binary sequence that has been cyclically shifted by the second cyclic shift. The secondary synchronization signal sequence is used together with the primary synchronization signal sequence for synchronization.

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.

Devices, apparatus, and methods, including computer programs encoded on storage media, alter at least one of comb offset, cyclic shift and TD-OCC to randomize SRS interference at unintended receivers. A user equipment (UE, 102) receives (322), from a network entity, an SRS-randomization configuration specifying parameters and / or a hopping pattern enable applying at least one of: a comb offset hopping, a cyclic shift hopping, or a time-domain orthogonal cover code (TD-OCC) hopping. The UE generates (326) an SRS using one or more of the comb offset hopping, the cyclic shift hopping and the TD-OCC hopping based on the parameters and / or the hopping pattern. The UE transmits (328), to the network entity, the SRS.

A root sequence cyclic shift method and device, the method comprising: a communication device determines a cyclic shift of a root sequence, the cyclic shift of the root sequence being associated with a sequence length, a root sequence number, a maximum round-trip delay and a maximum Doppler frequency shift of the root sequence; and the communication device determines a cyclic shift sequence according to the cyclic shift of the root sequence, and the fuzzy function of the cyclic shift sequence is equal to zero in the maximum round-trip delay and the maximum Doppler frequency shift range. By adopting the method provided by the invention, the communication device can obtain the cyclic shift sequence with the fuzzy function equal to zero according to the root sequence.

A radio communication device capable of randomizing both inter-cell interference and intra-cell interference. In this device, a spreading section primarily spreads a response signal in a ZAC sequence set by a control unit. A spreading section secondarily spreads the primarily spread response signal in a block-wise spreading code sequence set by the control unit. The control unit controls the cyclic shift amount of the ZAC sequence used for the primary spreading in the spreading section and the block-wise spreading code sequence used for the secondary spreading in the spreading section according to a set hopping pattern. The hopping pattern set by the control unit is made up of two hierarchies. An LB-based hopping pattern different for each cell is defined in the first hierarchy in order to randomize the inter-cell interference. A hopping pattern different for each mobile station is defined in the second hierarchy to randomize the intra-cell interference.

A communication apparatus includes: storing means for storing information indicating a first base set including a first base sequence to an N-th base sequence; shifting means for generating a first shift sequence to an N-th shift sequence by determining a shift amount based on transmission data, and cyclic shifting an n-th base sequence (n being an integer from 1 to N) by the shift amount; holding means for holding timing information indicating transmission timings of sequences; and transmitting means for transmitting each shift sequence according to the timing information, wherein the first base sequence to the N-th base sequence satisfy a first condition of: a total across the first base sequence to the N-th base sequence of correlation values of autocorrelation is not 0 when a shift amount is 0, and a total across the first base sequence to the N-th base sequence of correlation values of autocorrelation is 0 when a shift amount is different from 0 used in data transmission.

In the multiple short sequence based SRS, multiple items of sequence data having a short sequence length corresponding to a partial band are used for transmitting SRS in discontinuous bands. In the multiple short sequence based SRS, a terminal specifies a frequency domain to be used for transmitting a reference signal using predetermined sequence data, applies a phase shift index associated with the specified frequency domain to the reference signal, and transmits the reference signal to which the phase shift index is applied by using the specified frequency domain.

Aspects of the present disclosure generally relate to wireless communications. In some aspects, a user equipment (UE) may receive a configuration indicating at least one uplink reference signal resource. The UE may transmit a plurality of uplink reference signals using the at least one uplink reference signal resource, and a cyclic shift for a first port associated with the plurality of uplink reference signals may hop within a subset of a set of possible cyclic shifts. Numerous other aspects are described.

The PPDU-based communication method and apparatus are applicable to a wireless local area network system that supports 802.11 series protocols such as 802.15 standards, for example, 802.15.4a, 802.15.4z, 802.15.4ab, the next-generation protocols of 802.15.4a, 802.15.4z, or 802.15.4ab, or the next-generation 802.11be such as Wi-Fi 8, or can be applied to a UWB-based wireless personal area network system, a sensing system, etc. The method includes the following. The transmitting end generates a PPDU based on the mapping relationship between data symbols and chip sequences, sends the PPDU, and correspondingly, the receiving end receives the PPDU and then processes the PPDU based on the mapping relationship, and the minimum Hamming distance is L / 2 or more. The minimum Hamming distance increases, thereby effectively reducing the bit error rate.

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.