Abstract: This application discloses a communication method, including: obtaining a demodulation reference signal port number, where the demodulation reference signal port number is for determining a resource block offset and a resource element offset; determining a resource element of a phase tracking reference signal based on the resource block offset and the resource element offset; and sending or receiving the phase tracking reference signal based on the resource element of the phase tracking reference signal. In various embodiments, PTRSs corresponding to different DMRS port numbers may be mapped to different resource blocks.

Abstract: This application provides a reference signal transmission method. The method includes: A transmit end determines a time-frequency resource occupied by a reference signal, where the time-frequency resource includes M symbols in time domain and N subcarriers corresponding to each of the M symbols in frequency domain, M is an integer greater than or equal to 2, and N is an integer greater than 1; the transmit end generates a reference signal sequence with a length of M×N, and maps the reference signal sequence to the time-frequency resource for sending; and accordingly, a receive end receives the reference signal on the time-frequency resource.

Abstract: A sequence-based signal processing method and apparatus are provided. A sequence meeting a requirement for sending a signal by using a physical uplink control channel (PUCCH) is determined, where the sequence is a sequence {fn} consisting of N elements, fn is an element in the sequence {fn}, and the determined sequence {fn} is a sequence meeting a preset condition; then, the N elements in the sequence {fn} are respectively mapped to N subcarriers to generate a first signal; and the first signal is sent. By using the determined sequence, when a signal is sent by using a PUCCH, a low sequence correlation can be maintained, and a relatively small peak-to-average power ratio (PAPR) value and cubic metric (CM) value can also be maintained, thereby meeting a requirement of a communication application environment in which a signal is sent by using a PUCCH.

Abstract: A sequence-based signal processing method and apparatus are provided. A sequence meeting a requirement for sending a signal by using a physical uplink control channel (PUCCH) is determined, where the sequence is a sequence {fn} consisting of N elements, fn is an element in the sequence {fn}, and the determined sequence {fn} is a sequence meeting a preset condition; then, the N elements in the sequence {fn} are respectively mapped to N subcarriers to generate a first signal; and the first signal is sent. By using the determined sequence, when a signal is sent by using a PUCCH, a low sequence correlation can be maintained, and a relatively small peak-to-average power ratio (PAPR) value and cubic metric (CM) value can also be maintained, thereby meeting a requirement of a communication application environment in which a signal is sent by using a PUCCH.

Abstract: Embodiments of the present disclosure provide, among other implementations, sequence determining methods. One example method provides a sequence group, and one sequence group number is corresponding to at least two sequences, where one sequence is used for mapping to consecutive subcarriers, and at least one other sequence is used for mapping to equally-spaced subcarriers. In some embodiments of the present disclosure, as high as possible cross-correlation between a sending signal obtained after equally-spaced mapping is performed on a sequence in a sequence group can be determined, and a sending signal obtained after continuous mapping is performed on another sequence in the group.

Abstract: This application provides a sequence-based signal processing method and apparatus. An example signal processing method includes: determining a sequence {xn} including N elements, where N is equal to 18, and the sequence {xn} satisfies a preset condition; generating a first signal based on the sequence {xn}; and sending the first signal.

Abstract: This application provides a communication method, an apparatus, and a computer-readable storage medium. The communication method includes: generating at least one reference signal. The at least one reference signal belongs to a reference signal set, and all reference signals in the reference signal set occupy a same time-frequency resource. The reference signal set includes at least two groups of reference signals, and each group of reference signals satisfies: Each group includes a plurality of reference signals, and the plurality of reference signals are pairwise orthogonal. For reference signals with same frequency-domain sequences, corresponding time-domain sequences are orthogonal to each other. For reference signals with same time-domain sequences, corresponding first frequency-domain sequences are orthogonal to each other, and corresponding second frequency-domain sequences are also orthogonal to each other.

Abstract: This application discloses a synchronization signal sending method and a related device. The method includes: generating, 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, 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.

Abstract: A method includes: determining a first sequence based on a first parameter, a second parameter, and a third parameter, where the first sequence is determined based on the third parameter and a second sequence, the second sequence is determined based on the first parameter and the second parameter, the first parameter and the second parameter are root indexes of the second sequence, and the third parameter is a time domain cyclic shift value; and sending a signal based on the first sequence.

Abstract: Embodiments of the present disclosure provide, among other implementations, sequence determining methods. One example method includes: determining an index v of a sequence group, where the sequence group comprises a sequence {xn} and a sequence {ym}; generating a second sequence based on the index v of the sequence group, where the second sequence is at least one of a second sequence {fn} or a second sequence {gm}; and transmitting uplink control information or a reference signal based on the second sequence.

Abstract: This application discloses a communication method and a communication apparatus. In the method, a terminal device can report a first capability indication to an access network device. The first capability indication can indicate that the terminal device causes no uplink transmission interruption in a band that does not involve uplink radio frequency chain switching in an uplink radio frequency chain switching period, and the uplink radio frequency chain switching is supported between a band in which uplink switching is performed in the uplink radio frequency chain switching period and the band that does not involve the uplink radio frequency chain switching.

Abstract: This application discloses reference signal and sequence configuration methods and apparatuses for wireless communications. In an implementation, a method includes: generating at least two reference signals, where the at least two reference signals are reference signals corresponding to at least two antenna ports allocated by a network device to a same terminal, the at least two reference signals are reference signals of a same type, the at least two reference signals include a first reference signal and a second reference signal, and a sequence of the first reference signal is different from a sequence of the second reference signal, and sending the at least two reference signals.

Abstract: Embodiments of this application disclose example data processing methods and example apparatuses. One example method includes determining, by a first terminal device based on a parameter group, a first sequence including N elements, where the parameter group includes a first parameter, a second parameter, and a cyclic shift value, the first sequence is obtained by performing cyclic shift on a second sequence based on the cyclic shift value, and the second sequence is determined based on the first parameter and the second parameter. The first terminal device can then send a signal to a network device based on the first sequence.

Abstract: The present disclosure relates to signal processing methods and apparatus. One example method includes determining a first sequence {x(n)} based on a preset condition and a sequence {s(n)}, generating a reference signal of a first signal by using the first sequence, and sending the reference signal on a first frequency-domain resource. The preset condition is xn=y(n+M)mod K, where y n = A · e j × ? × s n 8 , M?{0, 1, 2, . . . , 5}, a length of the first sequence is K=6, n=0, 1, . . . , K?1, A is a non-zero complex number, and j=?{square root over (?1)}. The first signal is a signal modulated by using ?/2 binary phase shift keying (BPSK). The first frequency-domain resource comprises K subcarriers each having a subcarrier number of k, k=u+L*n+delta, L is an integer greater than or equal to 2, delta?{0, 1, . . . , L?1}, u is an integer, and subcarrier numbers of the K subcarriers are numbered in ascending or descending order of frequencies.

Abstract: This application provides a sequence-based signal processing method and apparatus. An example signal processing method includes: determining a sequence {xn} including N elements, where N is equal to 18 and the sequence {xn} satisfies a preset condition; generating a first signal based on the sequence {xn}; and sending the first signal.

Abstract: Embodiments of this application provide a resource configuration method and apparatus. The method includes: A network device determines K sounding reference signal resource sets corresponding to each of N terminal devices in a first cell, where K sounding reference signal resource sets corresponding to any one of the N terminal devices belong to M sounding reference signal resource sets, and at least X sounding reference signal resource sets in corresponding K sounding reference signal resource sets are different between any two of the N terminal devices. The network device sends configuration information to each terminal device, where the configuration information indicates K sounding reference signal resource sets.

Abstract: This application provides a communication method and a communication apparatus. The method includes: predefining at least two reference signal sets, where minimum cyclic shift intervals respectively corresponding to the at least two reference signal sets are different from each other, the at least two reference signal sets occupy a same time-frequency resource, and code division orthogonality is performed between different reference signals in a same reference signal set.

Abstract: This application relates to a sequence detection method and a device. One example method includes receiving a first sequence carried on a plurality of subcarriers; differentiating the first sequence based on L granularities, to obtain a first differential sequence set comprising L sequences; determining K candidate frequency domain root sequences in the U candidate frequency domain root sequences based on differential sequence cross correlation value sets corresponding to the U candidate frequency domain root sequences; and determining a candidate frequency domain root sequence and a time domain cyclic shift value that correspond to the first sequence, based on the first sequence and the K candidate frequency domain root sequences.

Abstract: A method includes determining a payload size of a first downlink control information (DCI) format that is the same as a payload size of a second DCI format. The first DCI format is for scheduling an uplink carrier and carries a first carrier indication and the second DCI format is for scheduling a downlink carrier and carries a second carrier indication. The first carrier indication is different from the second carrier indication. The method also includes monitoring DCI in the first DCI format.

Abstract: This application discloses a synchronization signal sending method and a related device. The method includes: generating, 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, 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.