Communication method and apparatus, and readable storage medium and computer program product

Abstract

A communication method and apparatus, and a readable storage medium and a computer program product, which relate to the technical field of communications, and are used for improving the frequency offset resistance of a signal by means of rationally setting the coefficient of an (R-1)th-order term. The method comprises: a first communication apparatus acquiring a first sequence set, wherein the first sequence set comprises a first sequence, the first sequence belongs to an R-th exponential sequence, R being an integer greater than 2, the coefficient of an (R-1)th-order term corresponding to the first sequence is associated with a first parameter, and the first parameter is associated with a first comb value corresponding to the first sequence; and the first communication apparatus transmitting a signal on the basis of the first sequence. Since the first parameter is associated with a frequency-domain resource for signal mapping, the first parameter may affect the capability of frequency offset resistance of the signal. However, in the present application, the coefficient of the (R-1)th-order term corresponding to the first sequence is associated with the first parameter. Therefore, the capability of frequency offset resistance of a signal transmitted by the first communication apparatus on the basis of the first sequence can be improved, and thus the communication performance can be improved.

Description

Communication method, device, readable storage medium and computer program product

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims priority to the Chinese patent application filed with the State Intellectual Property Office of the People's Republic of China on March 22, 2024, with application number 202410339590.4 and application name "A communication method, device, readable storage medium and computer program product", the entire contents of which are incorporated by reference into this application. Technical Field

[0003] The present application relates to the field of communication technology, and in particular to a communication method, device, readable storage medium, and computer program product. Background Art

[0004] In wireless communication systems, the most important and challenging task is to combat the variability and uncertainty of the wireless transmission environment. On the transmitter side, efficient communication methods can effectively utilize instantaneous channel information and perform appropriate information / signal preprocessing on the transmitter side to ensure that the transmitter's transmission matches the instantaneous channel information. On the receiver side, accurate data reception and demodulation also require instantaneous channel information. The transmitter and / or receiver can obtain instantaneous channel information by measuring the transmitted reference signal. Improving communication performance is a key research topic. Summary of the Invention

[0005] The present application provides a communication method, apparatus, readable storage medium, and computer program product for improving the rationality of the (R-1)-order coefficient setting of the first sequence, thereby improving the ability of the first sequence to resist frequency domain offset, and thereby improving communication performance.

[0006] For example, a first sequence set includes a first sequence and a second sequence. After the first sequence arrives from the transmitting end to the receiving end, due to the time domain offset and frequency domain offset it experiences, the receiving end may mistakenly identify the first sequence as the second sequence. To improve the first sequence's ability to resist frequency domain offset, that is, to reduce the possibility of the receiving end mistakenly identifying the received first sequence signal as the second sequence, the present application may provide several possible implementations.

[0007] For example, the cubic term coefficients of the first and second sequences are different. For another example, if the cubic term coefficients of the first and second sequences are the same, but the quadratic term coefficients of the first and second sequences are different, the quadratic term coefficients of the first and second sequences are associated with a first parameter and / or a second parameter. The first parameter is associated with the first comb value and / or comb offset value corresponding to the first sequence. The second parameter is, for example, a constant. For example, the second parameter is associated with the first frequency offset value.

[0008] By setting the first and second sequences above, the ability to withstand the first frequency offset value is improved. After the first sequence undergoes a frequency offset corresponding to the first frequency offset value, the likelihood that the receiving end will identify the received signal corresponding to the first sequence as the second sequence is reduced. This solution can improve the signal's ability to withstand frequency offset, thereby enhancing communication performance.

[0009] In a first aspect, the present application provides a communication method. The method can be performed by a first communication device, which can be a terminal device or a chip (or circuit, or chip system) inside the terminal device. The first communication device can also be a network device or a chip (or circuit, or chip system) inside the network device.

[0010] The first communication device obtains a first sequence set. The first sequence set includes a first sequence, the first sequence belongs to an R-order exponential sequence, R is an integer greater than 2, and the coefficient of the (R-1)-order term corresponding to the first sequence is associated with a first parameter and / or a second parameter. The first parameter is associated with a first comb value and / or a comb offset value corresponding to the first sequence. The second parameter is, for example, a constant. For example, the second parameter is associated with a first frequency offset value. The first communication device transmits a signal according to the first sequence. The first communication device may send a signal according to the first sequence, and the second communication device may receive a signal according to the first sequence. Alternatively, the second communication device may send a signal according to the first sequence, and the first communication device may receive a signal according to the first sequence.

[0011] The first comb value is a comb value and can be the interval between comb teeth. The first comb value can also be called a first transmission comb value (transmission comb), etc. The first comb value can be an integer. The first comb value can be 1, or the first comb value can be an integer greater than 1. When the first comb value is 1, it can also be considered that the signal corresponding to the sequence is continuously mapped to the frequency domain resources.

[0012] The first comb value can also be replaced by the first comb number, which can be represented by an integer. The first comb value selected in the embodiment of the present application can be one of the comb value sets. The comb value set includes one or more comb values. There may be multiple cases for the comb value set. For example, if there are L1 comb values ​​in total, the comb value set can be [0, 1, ..., L1-1], or the comb value set can be [1, 2, ..., L1]. Unless otherwise specified, the present invention will be described as taking the comb value set [1, 2, ..., L1] as an example.

[0013] The comb tooth offset value can also be replaced by a comb tooth index, which can be represented by an integer. The comb tooth index selected in the embodiment of the present application can be one of the comb tooth index sets. The comb tooth index set includes one or more comb tooth indexes. There may be multiple situations for the comb tooth index set. For example, if there are L2 comb tooth indices in total, the comb tooth index set can be [0, 1, ..., L2-1], or the comb tooth index set can be [1, 2, ..., L2]. Unless otherwise specified, the present invention will be described as taking the comb tooth index set [1, 2, ..., L2] as an example.

[0014] Because the first comb value and / or comb offset value are associated with the frequency domain resources mapped to the signal corresponding to the first sequence, interference to the first sequence from other sequences (e.g., sequences mapped to resources corresponding to other sequence offset values) is also related to the first comb value and / or comb offset value. In this solution, the (R-1)-order coefficient of the first sequence is associated with the first parameter, and the first parameter is associated with the first comb value corresponding to the first sequence. This improves the rationality of the (R-1)-order coefficient setting of the first sequence, thereby improving the first sequence's ability to resist frequency domain offset, and thereby improving communication performance.

[0015] In one possible implementation, the coefficient of the (R-1)-order term corresponding to the first sequence is further associated with a second parameter, and the second parameter is associated with the first frequency offset value. Since the coefficient of the quadratic term of the first sequence is set based on the first frequency offset value, the first sequence's ability to withstand the first frequency offset value can be improved. After the first sequence undergoes a frequency offset corresponding to the first frequency offset value, the likelihood that the receiving end will identify the received signal corresponding to the first sequence as another sequence is reduced. This solution can improve the signal's ability to withstand frequency offset, thereby improving communication performance.

[0016] In one possible implementation, the coefficient of the (R-1)-order term corresponding to the first sequence is associated with the coefficient of the R-order term corresponding to the first sequence. In this solution, the coefficient of the (R-1)-order term of the first sequence is associated with the coefficient of the R-order term of the first sequence, thereby improving the rationality of the setting of the coefficient of the (R-1)-order term of the first sequence. This can be used to improve the correlation between two different sequences in the first sequence set when there is a certain range of frequency offsets, thereby improving the detection performance of the sequences in the first sequence set, and further improving the communication performance.

[0017] In one possible implementation, the coefficient of the (R-1)-order term corresponding to the first sequence is associated with the generated length (or length) of the first sequence. The period of the first sequence can be determined by the generated length of the first sequence. In this solution, the coefficient of the (R-1)-order term of the first sequence is associated with the generated length (or length) of the first sequence. This can improve the rationality of setting the coefficient of the (R-1)-order term of the first sequence, thereby improving the first sequence's ability to resist frequency domain offset, and thereby improving communication performance.

[0018] In one possible implementation, the first sequence set further includes a second sequence, and the second sequence is an R-order exponential sequence. The coefficient of the R-order term corresponding to the first sequence is different from the coefficient of the R-order term corresponding to the second sequence. In another possible implementation, when the coefficient of the R-order term corresponding to the first sequence is the same as the coefficient of the R-order term corresponding to the second sequence, the coefficient of the (R-1)-order term corresponding to the first sequence is also associated with the coefficient of the (R-1)-order term corresponding to the second sequence.

[0019] The first and second sequences may experience frequency offset during transmission. Without targeted design, the receiver may mistakenly identify the signal corresponding to the first sequence as the second sequence. With a reasonable frequency offset resistance design, the likelihood of the receiver mistakenly identifying the signal corresponding to the first sequence as the second sequence is reduced. Therefore, it is necessary to jointly design all sequences in the first sequence set. In this scheme, the (R-1)-order coefficient of the first sequence is associated with the coefficient of the (R-1)-order coefficient of the second sequence. This allows a more reasonable (R-1)-order coefficient of the first sequence to be set based on the coefficient of the (R-1)-order coefficient of the second sequence, thereby improving the first sequence's ability to resist frequency domain offset and, consequently, improving communication performance.

[0020] In one possible implementation, the first frequency offset value is associated with a frequency offset value between a signal corresponding to the first sequence and a signal corresponding to the second sequence. Because the first frequency offset value is associated with the frequency offset value between the signal corresponding to the first sequence and the signal corresponding to the second sequence, the (R-1)-order coefficient of the first sequence set based on the second parameter can be more reasonable. After receiving the first sequence, the receiving end is less likely to mistakenly identify the received signal corresponding to the first sequence as the second sequence, thereby improving the first sequence's ability to resist frequency domain offset and subsequently improving communication performance.

[0021] In one possible implementation, the coefficient of the (R-1)th order term corresponding to the first sequence is associated with the comb offset value corresponding to the second sequence. The comb offset value corresponding to the first sequence and the comb offset value corresponding to the second sequence are the same or different. The comb offset value of the second sequence and the comb offset value corresponding to the first sequence will affect the correlation between the first sequence and the second sequence when there is a frequency offset within a certain range. In this scheme, the (R-1)th order term coefficient of the first sequence is associated with the comb offset value corresponding to the second sequence. Therefore, the (R-1)th order term coefficient of the first sequence, which is more reasonable based on the comb offset value corresponding to the second sequence, can be used to improve the ability of the detection reference signal to resist frequency domain offset, thereby improving communication performance.

[0022] For example, the comb teeth values ​​corresponding to sequence #K1 and sequence #K2 are the same, both being the first comb teeth value, such as 4. The comb teeth offset values ​​corresponding to sequence #K1 and sequence #K2 may be the same or different. For example, the comb teeth offset value (or comb teeth index) corresponding to sequence #K1 is 1, and the comb teeth offset value (or comb teeth index) corresponding to sequence #K2 is 2. When there is a frequency offset within a certain range between a sequence (e.g., sequence #K1) mapped to a resource corresponding to a first comb teeth offset value (e.g., comb teeth offset value 1) and a sequence (e.g., sequence #K2) mapped to a resource corresponding to a second comb teeth offset value (e.g., comb teeth offset value 2), the sequences in the sequence set corresponding to the first comb teeth offset value (e.g., comb teeth offset value 1) and the sequence set corresponding to the second offset value (e.g., comb teeth offset value 2) can be jointly designed to optimize the correlation between the sequences in the sequence set corresponding to the first comb teeth offset value (e.g., sequence #K1) and the sequences in the sequence set corresponding to the second offset value (e.g., sequence #K2).

[0023] In one possible implementation, the sequences in the first sequence set satisfy: or e is the Euler constant, f(n) is an R-degree polynomial, N is the sequence generation length (or length), 0 ≤ n ≤ (L-1), U is an integer, v is an integer, and L is an integer. In this way, the self-ambiguity functions of the sequences in the first sequence set within a certain time-frequency offset range satisfy the Weil exponent and bound, exhibit good autocorrelation, and achieve better synchronization performance within a certain frequency offset range.

[0024] In a possible implementation, when R is 3, the first sequence is the sth sequence in the first sequence set, and the f corresponding to the first sequence is s (n) satisfies: f s (n) = a s n 3 +b s n 2 +c s n+d s The second sequence is the tth sequence in the first sequence set, and the f corresponding to the second sequence is t (n) satisfies: f t (n) = a t n 3 +b t n 2 +c t n+d t .

[0025] In one possible implementation, a s ≠a t. In the case where the coefficient of the R-order term corresponding to the first sequence and the coefficient of the R-order term corresponding to the second sequence are different, the mutual correlation value between the first sequence and the second sequence is not greater than a certain value within a certain time-frequency offset range. After the reference signal generated by the first communication device based on the first sequence undergoes a frequency domain offset, the possibility that the receiving end mistakenly identifies the received sequence as the second sequence is low, and the interference between the reference signal generated based on the first sequence and the reference signal generated based on the second sequence is small, thereby improving the ability of the sequences in the first sequence set to resist frequency domain offset, thereby improving communication performance.

[0026] In another possible implementation, a s =a t =a, b s ≠b t In one possible implementation, the coefficient of the R-order term corresponding to the first sequence is the same as the coefficient of the R-order term corresponding to the second sequence, for example, s =a t =a, which may cause significant interference between the first sequence and the second sequence. In order to reduce interference, in one possible implementation, the coefficient of the (R-1)-order term corresponding to the first sequence is different from the coefficient of the (R-1)-order term corresponding to the second sequence, for example, b s ≠b t .

[0027] In one possible implementation, a s =a t = a, b s and b t Meet at least one of the following:

[0028] (3a×μ)mod N=(b s -b t ); (3a×μ)mod N=(b t -b s );

[0029] From the above content, it can be seen that there is a correlation between the (R-1)-order coefficient of the first sequence and the (R-1)-order coefficient of the second sequence. The two (R-1)-order coefficients can be reasonably set based on parameters such as μ, thereby improving the ability of the first and second sequences to resist frequency offset.

[0030] In a possible implementation, μ is associated with the first comb tooth value corresponding to the first sequence.

[0031] In a possible implementation, the signal corresponding to the first sequence is mapped on the frequency domain resources based on the first comb tooth value, and the signal corresponding to the second sequence is mapped on the frequency domain resources based on the first comb tooth value. Δ F is the first frequency offset value, M is the first comb value, and M is 1 or an integer greater than 1. From the above example, it can be seen that when μ satisfies the above conditions, within ±Δ F There may not be multiple peaks within the frequency deviation range of the subcarrier, and within ±Δ F The first and second sequences are robust to frequency offset within a certain time-frequency offset range. Thus, the self-ambiguity functions of the first and second sequences within a certain time-frequency offset range satisfy the Weil exponent and bound, resulting in good correlation. Consequently, when the first and second sequences are used to transmit reference signals, the interference between the signals corresponding to the first and second sequences is minimal, thereby improving communication performance.

[0032] In one possible implementation, a s =a t = a, b i,k =3a(y i,k +g i ),b j,q =3a(y j,q +g j );|M(y i,k -y j,q )+ij|≥2Δ F +1. Where i is the comb offset value corresponding to the first sequence, b i,k is the kth element in the (R-1)th order coefficient set corresponding to the first sequence, j is the comb offset value corresponding to the second sequence, b j,q is the qth element in the (R-1)th order coefficient set corresponding to the second sequence, g i and g j is a constant, Δ F is the first frequency offset value, and M is the first comb tooth value.

[0033] In the present application, one or more sequences corresponding to a comb offset value can be regarded as a sequence set corresponding to the comb offset value. In one possible implementation, i and j are different. In the embodiment of the present application, one or more sequences corresponding to a comb offset value can be referred to as a sequence set. Two different comb offset values ​​can correspond to two different sequence sets, and the two sequence sets can be regarded as two subsets in a sequence set. In this case, the first sequence and the second sequence can be regarded as sequences in a sequence set corresponding to different comb offset values. It can be seen that when the comb offset values ​​corresponding to the first sequence and the second sequence are different, b i,k and b j,q After the relationship can satisfy the above content, the first sequence and the second sequence are in ΔF The self-ambiguity function within the range satisfies the Weil exponent and bound, demonstrating good correlation. Consequently, when the first and second sequences are used to transmit reference signals, the signals corresponding to the first and second sequences experience less interference, thereby improving communication performance. This example also demonstrates that, when the first and second sequences can be considered sequences within a set of sequences corresponding to different comb offset values, the sequences within the set of sequences corresponding to different comb offset values ​​can be jointly designed to optimize the correlation between the sequences corresponding to the different comb offset values.

[0034] In one possible implementation, a s =a t =a:

[0035] b i,k =3a(k(2Δ F +1)+h i );b j,q =3a(q(2Δ F +1)+h j ).

[0036] Among them, i is the comb offset value corresponding to the first sequence, b i,k is the kth element in the (R-1)th order coefficient set corresponding to the first sequence, where k is b i,k The index of the element in the (R-1) order coefficient set corresponding to the first sequence, j is the comb offset value corresponding to the second sequence, b j,q is the qth element in the (R-1)th order coefficient set corresponding to the second sequence, where q is b i,q The index of the element in the set of (R-1)-order coefficients corresponding to the first sequence, h i and h j is a constant, Δ F is the first frequency offset value.

[0037] In one possible implementation, i and j are the same. In this case, the first sequence and the second sequence can be regarded as sequences in a sequence set corresponding to the same comb offset value. In this case, b i,k and b j,k After the relationship can satisfy the above content, the first sequence and the second sequence are in Δ FThe self-ambiguity function within the range satisfies the Weil exponent and bound, demonstrating good correlation. Consequently, when the first and second sequences corresponding to the same comb offset value are used to transmit the reference signal, the signal interference between the first and second sequences is minimal, thereby improving communication performance. This example also demonstrates that, if the first and second sequences can be considered sequences within a set of sequences corresponding to the same comb offset value, sequences within a set of sequences corresponding to different comb offset values ​​can be jointly designed to optimize the correlation between sequences corresponding to different comb offset values.

[0038] [Corrected 07.03.2025 according to Rule 91] In another possible implementation, i and j are different. In this case, the first sequence and the second sequence can be regarded as sequences in a sequence set corresponding to different comb tooth offset values. In the embodiment of the present application, one or more sequences corresponding to a comb tooth offset value can be referred to as a sequence set. Two different comb tooth offset values ​​can correspond to two different sequence sets, and the two sequence sets can be regarded as two subsets of a sequence set. j -h i =x, where x satisfies arg min x (mod(xM-1,Δ F )=0), M is the first comb tooth value, Δ F is the first frequency offset value. For example, i and j satisfy the relationship, j = i + 1 or i = j + 1, and j = i + 1 is used as an example in this application. It can be seen that when the comb tooth offset values ​​corresponding to the first sequence and the second sequence are different, h i and h j After the relationship can satisfy the above content, the first sequence and the second sequence are in Δ F The self-ambiguity function within the range satisfies the weil index and bound, and has good correlation. Then, when the first sequence and the second sequence are used to transmit the reference signal, the signal interference corresponding to the first sequence and the second sequence is small, thereby improving the communication performance.

[0039] In a second aspect, the present application provides a communication method. The method can be performed by a second communication device, and the first communication device can be a terminal device or a chip (or circuit, or chip system) inside the terminal device. The first communication device can also be a network device or a chip (or circuit, or chip system) inside the network device.

[0040] The second communication device obtains a first sequence set. The first sequence set includes a first sequence, the first sequence belongs to an R-order exponential sequence, R is an integer greater than 2, and the coefficient of the (R-1)-order term corresponding to the first sequence is associated with a first parameter and / or a second parameter. The first parameter is associated with a first comb value and / or a comb offset value corresponding to the first sequence. The second parameter is, for example, a constant. For example, the second parameter is associated with a first frequency offset value. The second communication device transmits a signal according to the first sequence. For example, the first communication device may send a signal according to the first sequence, and the second communication device may receive a signal according to the first sequence. Alternatively, the second communication device may send a signal according to the first sequence, and the first communication device may receive a signal according to the first sequence.

[0041] For the relevant contents of the sequences in the first sequence set, the first sequence, and the second sequence, please refer to the relevant description of the first aspect above and will not be repeated here.

[0042] In a third aspect, a communication device is provided, which may be the aforementioned first communication device or the second communication device. The communication device may include a communication unit and a processing unit to perform any one of the above-mentioned first to second aspects, or to perform any possible implementation of the first to second aspects. The communication unit is used to perform functions related to sending and receiving. The communication unit may be referred to as a transceiver unit. Optionally, the communication unit includes a receiving unit and a sending unit. In one design, the communication device is a communication chip (or circuit, or chip system), the processing unit may be one or more processors or processor cores, and the communication unit may be an input and output circuit, an input and output interface, or an antenna port of the communication chip (or circuit, or chip system).

[0043] In another design, the communication unit may be a transmitter and a receiver, or the communication unit may be a transmitter and a receiver.

[0044] Optionally, the communication device further includes modules that can be used to execute any one of the first to second aspects above, or execute any possible implementation of the first to second aspects.

[0045] In a fourth aspect, a communication device is provided, which may be the aforementioned first communication device or second communication device. The communication device may include a processor to perform any aspect of the aforementioned first to second aspects, or to perform any possible implementation of the aforementioned first to second aspects. Optionally, a memory is further included. Optionally, a transceiver is further included. The memory is used to store a computer program or instruction, and the processor is used to call and run the computer program or instruction from the memory. When the processor executes the computer program or instruction in the memory, the communication device performs any aspect of the aforementioned first to second aspects, or to perform any possible implementation of the aforementioned first to second aspects.

[0046] Optionally, there are one or more processors and one or more memories.

[0047] Optionally, the memory may be integrated with the processor, or the memory may be provided separately from the processor.

[0048] Optionally, the transceiver may include a transmitter (transmitter) and a receiver (receiver).

[0049] In a fifth aspect, a communication device is provided, which may be the aforementioned first communication device or second communication device. The communication device may include a processor to execute any of the aforementioned first to second aspects, or any possible implementation of the aforementioned first to second aspects. For example, the processor executes any of the aforementioned first to second aspects, or any possible implementation of the aforementioned first to second aspects, through a logic circuit or by executing a computer program or instruction in a memory. Optionally, the communication device further includes a memory. The processor is coupled to the memory. Optionally, the communication device further includes a communication interface, and the processor is coupled to the communication interface.

[0050] In one implementation, when the communication device is the first communication device or the second communication device, the communication interface may be a transceiver or an input / output interface. Alternatively, the transceiver may be a transceiver circuit. Alternatively, the input / output interface may be an input / output circuit.

[0051] In another implementation, when the communication device is a chip (or circuit, or chip system), the communication interface may be an input / output interface, interface circuit, output circuit, input circuit, pin, or related circuit on the chip (or circuit, or chip system). The processor may also be embodied as a processing circuit or a logic circuit.

[0052] In a sixth aspect, a system is provided, which includes the aforementioned first communication device.

[0053] In a possible implementation, the system may further include the aforementioned second communication device.

[0054] In the seventh aspect, a chip system is provided, which includes at least one processor and an interface circuit, the interface circuit and at least one processor are interconnected by lines, and the processor runs a computer program (also called code, or instruction) to execute any aspect of the above-mentioned first to second aspects, and any possible implementation of the first to second aspects.

[0055] In an eighth aspect, a computer program product is provided, which includes: a computer program (also referred to as code, or instructions), which, when run, enables any one of the above-mentioned first to second aspects to be executed, or any possible implementation of the first to second aspects to be executed.

[0056] In the ninth aspect, a computer-readable storage medium is provided, which stores a computer program (also referred to as code, or instructions). When the computer program is run on a computer, any one of the above-mentioned first to second aspects is executed, or any possible implementation of the first to second aspects is executed.

[0057] In a tenth aspect, a processing device is provided, comprising: an interface circuit and a processing circuit. The interface circuit may include an input circuit and an output circuit. The processing circuit is configured to receive signals via the input circuit and transmit signals via the output circuit, thereby implementing any of the first and second aspects, or any possible implementation of the first and second aspects.

[0058] In a specific implementation process, the above-mentioned processing device can be a chip (or circuit, or chip system), the input circuit can be an input pin, the output circuit can be an output pin, and the processing circuit can be a transistor, a gate circuit, a trigger, and various logic circuits. The input signal received by the input circuit can be, for example, but not limited to, received and input by a receiver, and the signal output by the output circuit can be, for example, but not limited to, output to a transmitter and transmitted by the transmitter, and the input circuit and the output circuit can be the same circuit, which is used as an input circuit and an output circuit at different times. This application does not limit the specific implementation of the processor and various circuits.

[0059] In one implementation, when the communication device is a first communication device or a second communication device, the interface circuit may be a radio frequency processing chip (or circuit, or chip system) in the first communication device or the second communication device, and the processing circuit may be a baseband processing chip (or circuit, or chip system) in the first communication device or the second communication device.

[0060] In another implementation, the communication device may be a component of the first communication device or the second communication device, such as an integrated circuit product such as a system-on-chip (or circuit, or chip system) or a communication chip (or circuit, or chip system). The interface circuit may be an input / output interface, interface circuit, output circuit, input circuit, pin, or related circuit on the chip (or circuit, or chip system). The processing circuit may be a logic circuit on the chip (or circuit, or chip system). BRIEF DESCRIPTION OF THE DRAWINGS

[0061] FIG1A is a schematic diagram of a possible structure of frequency domain resources of data and / or signals provided in an embodiment of the present application;

[0062] FIG1B is a schematic diagram of a possible structure of frequency domain resources of data and / or signals provided in an embodiment of the present application;

[0063] FIG1C is a schematic diagram of a possible structure of frequency domain resources of data and / or signals provided in an embodiment of the present application;

[0064] FIG2 is a schematic diagram of a system architecture provided in an embodiment of the present application;

[0065] FIG3 is a flow chart of a possible communication method provided in an embodiment of the present application;

[0066] FIG4 is a schematic diagram of normalization of the self-fuzzy function value of the W sequence provided in an embodiment of the present application;

[0067] FIG5 is a schematic diagram of normalization of the self-fuzzy function value of the W sequence provided in an embodiment of the present application;

[0068] FIG6 is a schematic diagram of normalization of the self-fuzzy function value of the W sequence provided in an embodiment of the present application;

[0069] FIG7 is a schematic structural diagram of a device provided in an embodiment of the present application;

[0070] FIG8 is another schematic diagram of the structure of the device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0071] In order to better understand the solutions provided by the embodiments of the present application, some terms and nouns involved in the embodiments of the present application are first introduced below.

[0072] (1)Sequence.

[0073] A sequence is an ordered set of numbers or elements. Specific sequences can leverage their structure and properties to achieve specific functions in different scenarios. Sequences play a crucial role in communication and perception technologies. By carrying specific sequences within signals and / or data, corresponding communication and / or perception functions can be achieved.

[0074] For example, in a communications system, a terminal device needs to access the network after powering on. However, it lacks prior knowledge of the network and cannot perform regular information reception. Therefore, it first needs to perform a network search to determine the frequency resources and timing information used by the network. To enable the terminal device to obtain this information, network equipment (such as access network equipment) periodically transmits synchronization signals carried on synchronization channels. Synchronization signals are signals generated according to a predefined sequence or one of multiple sequences. Accordingly, the terminal device can perform synchronization signal searches at multiple preset frequencies according to predefined possible synchronization sequences. Upon detecting a specific synchronization signal, it considers the network to have been found. It then performs time synchronization, frequency offset estimation and compensation, and continues to attempt to receive subsequent signals and system broadcast information. It can be seen that sequences play a crucial role in the initial synchronization process. Their detection performance and ability to resist frequency offset, interference, and noise determine whether the terminal device can successfully access the network, as well as the speed at which the terminal device successfully accesses the network. Sequence detection performance can be primarily characterized by its correlation, which includes autocorrelation and cross-correlation.

[0075] Autocorrelation reflects the degree of match between two identical sequences at different relative positions. Cross-correlation reflects the degree of match between two different sequences at different relative positions. In communications systems, autocorrelation determines whether the starting position of a sequence can be accurately detected, while cross-correlation determines the probability of misidentifying one sequence as another.

[0076] (2) Resources.

[0077] The resources in the embodiments of the present application may include, for example, at least one of time domain resources, frequency domain resources, code domain resources, or space domain resources.

[0078] (2.1) Time domain resources.

[0079] The time domain resources may include at least one of a radio frame, a subframe, a slot, a mini slot, or an orthogonal frequency division multiplexing (OFDM) symbol.

[0080] A time domain unit may include a radio frame, a subframe, a time slot, a mini slot, or an OFDM symbol. A time domain unit may also include resources composed of multiple radio frames, multiple subframes, multiple time slots, multiple mini slots, or multiple OFDM symbols. Among them, a radio frame may include multiple subframes, a subframe may include one or more time slots, and a time slot may include at least one symbol. Alternatively, a radio frame may include multiple time slots, and a time slot may include at least one symbol. It should be noted that in the embodiment of the present application, an OFDM symbol may also be referred to as a symbol.

[0081] Depending on the subcarrier spacing, the length of each symbol can be different, and therefore the time slot length can be different. For example, a time slot length corresponding to a 15kHz subcarrier spacing is 0.5ms, a time slot length corresponding to a 60kHz subcarrier spacing is 0.125ms, and so on.

[0082] In the embodiment of the present application, the time domain unit can also be replaced by: a time domain resource unit or a time domain unit, etc.

[0083] (2.2) Frequency domain resources.

[0084] In the frequency domain, frequency domain resources may include one or more frequency domain units. A frequency domain unit may be a resource block (RB), a physical resource block (PRB), a subcarrier, a resource block group (RBG), a predefined subband, a precoding resource block group (PRG), a resource pool, a bandwidth part (BWP), a resource element (RE) (also called a resource unit or resource particle), a carrier, or a serving cell. PRB and RB may be interchangeable. Optionally, a resource pool may include one or more resources, which may include at least one of time domain resources, frequency domain resources, code domain resources, or spatial domain resources. The number and size of resources included in the resource pool may be predetermined or configured by signaling.

[0085] Subcarrier or RE refers to a minimum frequency domain unit on a specific symbol in a multi-carrier system. Subcarrier spacing (SCS) is the spacing value between the center position or peak position of two adjacent subcarriers in the frequency domain in an OFDM system. In 5G NR, a variety of subcarrier spacings are introduced, and different carriers can have different subcarrier spacings. The baseline is 15kHz, which can be 15kHz×2n, where n is an integer from 3.75, 7.5 to 480kHz. In the embodiment of the present application, RE may refer to a resource unit of time-frequency resources, for example, it can be regarded as the smallest time-frequency resource unit. In this application, subcarriers and RE can be used interchangeably, and their contents are the same.

[0086] A subchannel is the smallest unit of frequency domain resources occupied by a physical sidelink shared channel. A subchannel may include one or more resource blocks (RBs). The bandwidth of a wireless communication system in the frequency domain may include multiple RBs. For example, in each possible bandwidth of an LTE system, the number of physical resource blocks (PRBs) included may be 6, 15, 25, 50, and so on. In the frequency domain, an RB may include several subcarriers. For example, in an LTE system, an RB includes 12 subcarriers, where each subcarrier spacing may be 15kHz. Of course, other subcarrier spacings may also be used, such as 3.75kHz, 30kHz, 60kHz, or 120kHz subcarrier spacing, which is not limited here.

[0087] A frequency domain unit may include an RE, an RB, a channel, a subchannel, a carrier, or a bandwidth part (BWP). A frequency domain unit may also include resources composed of multiple REs, multiple RBs, multiple subchannels, multiple carriers, or multiple BWPs. In an embodiment of the present application, a channel may be equivalently replaced by a resource block set (RB set), and the frequency domain bandwidth of an RB set may be 20 megahertz (MHz).

[0088] In the embodiment of the present application, the frequency domain unit may also be replaced by: a frequency domain resource unit or a frequency unit, etc.

[0089] A frequency domain resource set may include one or more frequency domain units. A frequency domain resource set may also be referred to as a frequency domain resource set, a frequency domain resource group, etc. A frequency domain resource set may include, for example, a resource block set (RBset), an RB, a subchannel, a resource pool, a carrier, or a BWP.

[0090] (2.3) Data and / or signals are mapped in the frequency domain with a comb tooth value M as an interval.

[0091] Data and / or signals may occupy all resources within the bandwidth of the data, or may occupy part of the resources. For example, data and / or signals may occupy frequency domain resources based on the structure of the comb teeth. In the embodiment of the present application, M is used to represent the interval of the comb teeth (for example, M can be replaced by Ncomb, Comb-M or other characters, etc.). For Comb-M in the embodiment of the present application, the data and / or signal appears in the frequency domain at intervals of M REs, and the remaining (M-1) REs are not transmitted. Optionally, in the embodiment of the present application, the frequency domain transmission mode of Comb-M may also be referred to as comb teeth, comb tooth structure, comb division or comb division structure, etc. The comb tooth value in the embodiment of the present application may also be referred to as the number of comb teeth, transmission comb tooth value (transmissionComb). In some embodiments of the present application, the comb tooth value is represented by the parameter M, and in some places it is also recorded as the comb tooth value M. The comb tooth offset value in the embodiment of the present application may also be recorded as combOffset, or may be referred to as a comb tooth index, comb tooth index value or offset value.

[0092] As shown in FIG1A , a rectangular grid is used as an example to represent an RE. In actual applications, a rectangular grid can also represent multiple REs or multiple frequency domain units. Referring to FIG1A , when the comb tooth value is 2 (Comb=2), the comb tooth offset value is one of {0, 1}. Multiple REs can be divided into comb tooth 0 numbered 0 (comb tooth 0 is composed of all REs numbered 0 in FIG1A , and the REs of comb tooth 0 can be understood as REs with comb tooth index 0, or REs with comb tooth offset value 0) and comb tooth 1 numbered 1 (comb tooth 1 is composed of all REs numbered 1 in FIG1A , and the REs of comb tooth 1 can be understood as REs with comb tooth index 1, or REs with comb tooth offset value 1). When the comb tooth offset value is 0, the transmitter can send signals and / or data on the frequency domain resources corresponding to comb tooth index 0, that is, send signals and / or data on all REs numbered 0 in FIG1A . If the comb tooth offset value is 1, the transmitter can send signals and / or data on the frequency domain resources corresponding to the comb tooth index 1, that is, send signals and / or data on all REs numbered 1 in Figure 1A (not shown in Figure 1A).

[0093] As shown in FIG1B , FIG1A uses a rectangular grid to represent an RE as an example. In actual applications, a long grid can also represent multiple REs or multiple frequency domain units. When the comb value is 4 (Comb=4), the comb offset value is one of {0, 1, 2, 3}. Multiple REs are divided into comb tooth 0 numbered 0 (comb tooth 0 is composed of all REs numbered 0 in FIG1B ), comb tooth 1 numbered 1 (comb tooth 1 is composed of all REs numbered 1 in FIG1B ), comb tooth 2 numbered 2 (comb tooth 2 is composed of all REs numbered 2 in FIG1B ), and comb tooth 3 numbered 3 (comb tooth 3 is composed of all REs numbered 3 in FIG1B ). When the comb offset value is 1, the transmitter can send signals and / or data on the frequency domain resources corresponding to the comb index 1, that is, send signals and / or data on all REs numbered 1 in FIG1B . If the comb tooth offset value is 2, the terminal device can send signals and / or data on the frequency domain resources corresponding to the comb tooth index 2, that is, send signals and / or data on all REs numbered 2 in Figure 1B (not shown in Figure 1B).

[0094] FIG1C exemplarily illustrates four possible structural diagrams of frequency domain resources for data and / or signals in a comb tooth value of 4 (or understood as a comb tooth value M of 4). Data and / or signals can be transmitted through comb tooth structure (a), comb tooth structure (b), comb tooth structure (c), or comb tooth structure (d) in FIG1C . The comb tooth offset value corresponding to FIG1C (a) is 0, the comb tooth offset value corresponding to FIG1C (b) is 1, the comb tooth offset value corresponding to FIG1C (c) is 2, and the comb tooth offset value corresponding to FIG1C (d) is 3. Taking FIG1C (a) as an example, in the case of Comb-4 (or understood as M being 4), the REs occupied by data and / or signals appear in the frequency domain at equal intervals of 4, and as shown in FIG1C (a), the data and / or signal will be sent on the first RE, and the three consecutive REs thereafter will be left vacant and not transmitted (the specific positions of the frequency domain resources occupied by data and / or signals are shown in FIG1C (a)). The meanings of other comb tooth structures in FIG1C are similar to those in FIG1C (a), and are not described in detail herein.

[0095] For example, the first reference signal and the second reference signal are mapped to the frequency domain resources based on the comb value M=4 respectively. The frequency domain unit mapped by the first reference signal is different from the frequency domain unit mapped by the second reference signal, and the comb offset value corresponding to the first reference signal is different from the comb offset value corresponding to the second reference signal. For example, the frequency domain units mapped by the first reference signal are RE#0, RE#4 and RE#8, and the RE mapping structure diagram of the first reference signal can be shown in (a) of Figure 1C, and the comb offset value corresponding to the first reference signal is 0. The frequency domain units mapped by the second reference signal are RE#1, RE#5 and RE#9, and the RE mapping structure diagram of the second reference signal can be shown in (b) of Figure 1C, and the comb offset value corresponding to the second reference signal is 1.

[0096] In an embodiment of the present application, the value of M may also be 1. In this case, the data is continuously mapped in the frequency domain.

[0097] (3) Reference signal.

[0098] In an embodiment of the present application, the reference signal may include (or be) a positioning reference signal (PRS), a sounding reference signal (SRS), a sidelink positioning reference signal (SL-PRS), a demodulation reference signal (DMRS), a channel state information reference signal (CSI) reference signal (RS), a synchronization signal block (SSB), a synchronization signal / physical broadcast channel block (SS / PBCH block), or a tracking reference signal (TRS), a phase tracking reference signal (PTRS), a beam management reference signal (BMRS), and a cell reference signal (CRS). At least one of the above.

[0099] (4) Mapping can also be described as "occupying" or "using". For example, when a communication system maps a channel onto a carrier, it means that the communication system uses or occupies part or all of the time-frequency resources corresponding to the carrier to transmit the information carried by the channel.

[0100] FIG2 exemplarily illustrates an architectural diagram of a communication system 1000 applicable to an embodiment of the present application. As shown in FIG2 , the communication system includes a radio access network 100 and a core network 200. Optionally, the communication system 1000 may also include the Internet 300. The radio access network 100 may include at least one radio access network device (such as 110a and 110b in FIG2 ) and at least one terminal device (such as 120a-120j in FIG2 ). The terminal device is wirelessly connected to the radio access network device, and the radio access network device is wirelessly or wiredly connected to the core network. The core network device and the radio access network device may be independent and distinct physical devices, or the functions of the core network device and the logical functions of the radio access network device may be integrated into the same physical device, or a single physical device may integrate some of the functions of the core network device and some of the functions of the radio access network device. Terminal devices and radio access network devices may be connected to each other via wired or wireless means. FIG2 is only a schematic diagram. The communication system may further include other network devices, such as wireless relay devices and wireless backhaul devices, which are not shown in FIG2 .

[0101] The network devices involved in the embodiments of the present application include, for example, radio access network (RAN) devices. The radio access network devices may be base stations, evolved NodeBs (eNodeBs), transmission reception points (TRPs), transmission nodes (TPs), next-generation NodeBs (gNBs) in fifth-generation (5G) mobile communication systems, next-generation base stations in sixth-generation (6G) mobile communication systems, base stations in future mobile communication systems, or access nodes in WiFi systems; they may also be modules or units that perform some of the functions of a base station, for example, a centralized unit (CU), a distributed unit (DU), or a radio unit (RU). The CU here implements the functions of the radio resource control protocol and packet data convergence protocol (PDCP) of the base station, and can also implement the functions of the service data adaptation protocol (SDAP); the DU implements the functions of the radio link control layer and medium access control (MAC) layer of the base station, and can also implement some or all of the physical layer functions. For detailed descriptions of the above-mentioned protocol layers, please refer to the relevant technical specifications of the 3rd Generation Partnership Project (3GPP). The CU and DU can be set separately, or they can be included in the same network element, such as the baseband unit (BBU). The RU can be included in a radio frequency device or radio frequency unit, such as a remote radio unit (RRU), an active antenna unit (AAU), or a remote radio head (RRH). In different systems, CU, DU, or RU may have different names, but those skilled in the art will understand their meanings.For example, in an open radio access network (ORAN) system, the CU may also be referred to as an open CU (open-CU, O-CU), the DU may also be referred to as an open DU (open-DU, O-DU), and the RU may also be referred to as an open RU (open-RU, O-RU). In this application, any of the CU (or CU control plane (CU control plane, CU-CP), CU user plane (CU user plane, CU-UP), DU, and RU may be implemented by a software module, a hardware module, or a combination of a software module and a hardware module.

[0102] The wireless access network device can be a macro base station (such as 110a in Figure 2), a micro base station or an indoor station (such as 110b in Figure 2), a relay node, a donor node, etc. The embodiments of this application do not limit the specific technology and device form used by the wireless access network device. For ease of description, the following description uses a base station as an example of a wireless access network device.

[0103] Terminal devices may also be referred to as terminal devices, user equipment (UE), mobile stations, mobile terminal devices, etc. Terminal devices can be widely used in various scenarios, such as device-to-device (D2D), vehicle-to-everything (V2X) communication, machine-type communication (MTC), Internet of Things (IOT), virtual reality, augmented reality, industrial control, autonomous driving, telemedicine, smart grid, smart furniture, smart office, smart wearable, smart transportation, smart city, etc. Terminal devices can be mobile phones, tablet computers, computers with wireless transceiver functions, wearable devices, vehicles, drones, helicopters, airplanes, ships, robots, robotic arms, smart home devices, sensors, etc. The embodiments of the present application do not limit the specific technology and specific device form adopted by the terminal devices.

[0104] The above-mentioned terminal device can establish a connection with the operator network through the interface provided by the operator network (such as N1, etc.) and use the data and / or voice services provided by the operator network. The terminal device can also access the domain name system (DNS) through the operator network, use the operator services deployed on the DNS, and / or services provided by a third party. Among them, the above-mentioned third party may be a service provider other than the operator network and the terminal device, and can provide other data and / or voice services to the terminal device. Among them, the specific form of the above-mentioned third party can be determined according to the actual application scenario and is not limited here.

[0105] Terminal devices may also be referred to as terminal devices, user equipment (UE), mobile stations, mobile terminal devices, etc. Terminal devices can be widely used in various scenarios, such as device-to-device (D2D), vehicle-to-everything (V2X) communication, machine-type communication (MTC), Internet of Things (IOT), virtual reality, augmented reality, industrial control, autonomous driving, telemedicine, smart grid, smart furniture, smart office, smart wearable, smart transportation, smart city, etc. Terminal devices may be mobile phones, tablet computers, computers with wireless transceiver functions, wearable devices, vehicles, drones, helicopters, airplanes, ships, robots, robotic arms, smart home devices, road side units (RSU), etc. The embodiments of the present application do not limit the specific technology and specific device form adopted by the terminal devices.

[0106] Base stations and terminal devices can be fixed or mobile. They can be deployed on land, indoors or outdoors, handheld or vehicle-mounted; on water; or in the air on aircraft, balloons, and satellites. The embodiments of this application do not limit the application scenarios of base stations and terminal devices.

[0107] The roles of base stations and terminal devices can be relative. For example, the helicopter or drone 120i in Figure 2 can be configured as a mobile base station. To terminal devices 120j accessing the wireless access network 100 via 120i, terminal device 120i is a base station. However, to base station 110a, 120i is a terminal device, meaning that communication between 110a and 120i occurs via a wireless air interface protocol. Of course, communication between 110a and 120i can also occur via a base station-to-base station interface protocol. In this case, 120i is also a base station relative to 110a. Therefore, base stations and terminal devices can be collectively referred to as communication devices. 110a and 110b in Figure 2 can be referred to as communication devices with base station functionality, while 120a-120j in Figure 2 can be referred to as communication devices with terminal functionality.

[0108] Communication between base stations and terminal devices, between base stations, and between terminal devices can be carried out through authorized spectrum, unauthorized spectrum, or both; communication can be carried out through spectrum below 6 gigahertz (GHz), spectrum above 6 GHz, or spectrum below 6 GHz and spectrum above 6 GHz. The embodiments of the present application do not limit the spectrum resources used for wireless communication.

[0109] In the embodiments of the present application, the functions of the base station may also be performed by a module in the base station (such as a chip (or circuit, or chip system)), or by a control subsystem that includes the base station function. The control subsystem that includes the base station function here may be a control center in the above-mentioned application scenarios such as smart grid, industrial control, smart transportation, and smart city. The functions of the terminal device may also be performed by a module in the terminal device (such as a chip (or circuit, or chip system) or a modem), or by a device that includes the terminal device function.

[0110] In this application, a base station sends downlink signals or downlink information to a terminal device, and the downlink information is carried on a downlink channel; the terminal device sends uplink signals or uplink information to the base station, and the uplink information is carried on an uplink channel. In order to communicate with the base station, the terminal device needs to establish a wireless connection with the cell controlled by the base station. The cell with which the terminal device has established a wireless connection is called the serving cell of the terminal device. When the terminal device communicates with the serving cell, it will also be interfered with by signals from neighboring cells.

[0111] The core network involved in the embodiments of the present application may include network equipment that processes and forwards user signaling and data. For example, it includes access and mobility management function (AMF), session management function (SMF), user plane gateway, positioning management equipment and other core network equipment. Among them, the user plane gateway can be a server with functions such as mobility management, routing, and forwarding of user plane data, generally located on the network side, such as a serving gateway (SGW) or a packet data network gateway (PGW) or a user plane network element function entity (UPF). AMF and SMF are equivalent to the mobility management entity (MME) in the long term evolution (LTE) system. AMF is mainly responsible for access, and SMF is mainly responsible for session management. Of course, the core network can also include other network elements, which are not listed here one by one.

[0112] FIG2 is only a schematic diagram. The wireless communication system may further include other devices, such as core network devices, wireless relay devices and / or wireless backhaul devices, which are not shown in FIG2 .

[0113] In one possible scenario used in the embodiments of the present application, such as long term evolution (LTE) or new radio (NR) and possible future sixth generation mobile network (6G) wireless application scenarios, in these scenarios, the communication system includes a base station and a user device. Certain functions such as synchronization, channel estimation, and perception need to be completed between the base station and the user device through sequences. For example, the base station completes the detection and / or estimation of the uplink channel by receiving a pilot sequence (sounding reference signal (SRS) or demodulation reference signal (DMRS)) from the user device. Optionally, the base station can apply the detection / estimation result to the downlink channel by the reciprocity of the channel. Or the user device completes the detection and estimation of the downlink channel by receiving the pilot sequence of the base station.

[0114] For example, in a wireless communication system, the transmitter needs to perform channel measurement before transmission to obtain instantaneous channel information (hereinafter referred to as channel information). Specifically, the channel measurement can be performed at the transmitter or at the receiver. In a time division duplex (TDD) system, because the channel from the transmitter to the receiver and the channel from the receiver to the transmitter are reciprocal, the transmitter can obtain the channel information from the transmitter to the receiver by estimating the channel information from the receiver to the transmitter. For example, in a cellular communication network, including LTE or NR, when an access network device sends downlink data to a terminal, the terminal can send a reference signal to the access network device. For example, the reference signal can be an SRS. The access network device can obtain the uplink channel information between the terminal and the access network device by measuring the reference signal. Based on the reciprocity principle of uplink and downlink channels, the access network device can obtain the downlink channel information between the access network device and the terminal, thereby assisting the access network device in sending downlink data to the terminal.

[0115] To correctly receive and demodulate data, the receiver needs to obtain channel information. In one implementation, the transmitter sends known information to the receiver on specific time-frequency resources, called DMRS. The receiver compares the DMRS received from the transmitter with the known DMRS to obtain channel information between the transmitter and the receiver, thereby assisting the receiver in demodulating the data received from the transmitter.

[0116] As communication systems develop, communications may adopt higher frequencies and support faster mobile speeds. For example, compared to NR, 6G communication systems will adopt higher frequency bands and support higher mobile speeds. Currently, LTE and NR support speeds of 500 km / h. In the 3.5 gigahertz (Ghz) ​​frequency band, a 30 kilohertz (kHz) subcarrier spacing (SCS) is generally used. At this time, the two-way Doppler can reach about 0.11 SCS. In 6G, a maximum speed of 1000 km / h may be supported, the carrier frequency supports 10Ghz, and when a 60kHz SCS is used, the two-way Doppler will reach 0.33 SCS. This will lead to increased interference.

[0117] For example, the first reference signal and the second reference signal are respectively mapped to the frequency domain resources based on the first comb value M. The first reference signal and the second reference signal have the same first comb value, but different corresponding comb offset values. The frequency domain unit mapped to the first reference signal is different from the frequency domain unit mapped to the second reference signal. For example, the frequency domain units mapped to the first reference signal are RE#0, RE#4, and RE#8. The RE mapping structure diagram of the first reference signal can be shown in (a) of Figure 1C. The frequency domain units mapped to the second reference signal are RE#1, RE#5, and RE#9. The RE mapping structure diagram of the second reference signal can be shown in (b) of Figure 1C. When the REs mapped to the first reference signal and the second reference signal are adjacent, to support higher frequency bands and faster mobile speeds, the mutual interference between the first reference signal and the second reference signal increases from -9.36dB in the NR scenario to -3.84dB, an increase of more than 5.5dB, which greatly reduces the detection performance of the reference signal (such as SRS). How to improve the signal's anti-frequency offset capability has become an urgent problem to be solved.

[0118] Based on this, the present application provides a possible implementation method, in which the first sequence set includes a first sequence. The coefficient of the (R-1)th order term corresponding to the first sequence is associated with a first parameter. For example, the first parameter is associated with a first comb value and / or a comb offset value corresponding to the first sequence. Since the coefficient of the (R-1)th order term corresponding to the first sequence can be set based on the first parameter, the frequency offset resistance of the signal transmitted by the first communication device based on the first sequence can be improved, thereby improving communication performance.

[0119] In another possible implementation, the first sequence set includes a first sequence and a second sequence. After the first sequence arrives at the receiving end from the transmitting end, the receiving end may mistakenly identify the first sequence as the second sequence due to the frequency domain offset it experiences. To improve the ability of the sequences in the first sequence set to resist frequency domain offset, for example, to reduce the possibility of the receiving end mistakenly identifying a received signal of the first sequence as the second sequence, the present application may provide several possible implementations. In these implementations, the sequences in the first sequence set may be limited to satisfying certain conditions, thereby improving the ability of the sequences in the first sequence set to resist frequency domain offset.

[0120] For example, the R-order coefficients of the first sequence and the second sequence in the first sequence set are different. For another example, the R-order coefficients of the first sequence and the second sequence are the same, and the coefficients of the (R-1)-order terms of the first sequence and / or the second sequence are associated with the first parameter. The first parameter is associated with the first comb value corresponding to the first sequence. Since the first sequence and / or the second sequence can be set based on the first parameter, the mutual correlation value between the first sequence and the second sequence is not greater than a certain value within a certain time-frequency offset range. After the reference signal generated by the first communication device based on the first sequence undergoes a frequency domain offset, the possibility of the receiving end mistakenly identifying the received sequence as the second sequence can be reduced, and the interference between the reference signal generated based on the first sequence and the reference signal generated based on the second sequence can also be reduced, thereby improving the ability of the sequences in the first sequence set to resist frequency domain offset, thereby improving communication performance.

[0121] Based on the above content, FIG3 exemplarily shows a flow chart of a communication method provided by an embodiment of the present application. The transmitting end may adopt the scheme provided by an embodiment of the present application to generate a reference signal based on a sequence in a first sequence set. The transmitting end sends a reference signal. The receiving end may adopt the scheme provided by an embodiment of the present application to receive a reference signal based on a sequence in a first sequence set. In an uplink communication scenario, the transmitting end may be a terminal, and the receiving end may be an access network device. In a downlink communication scenario, the transmitting end may be an access network device, and the receiving end may be a terminal. In a sideline communication scenario, the transmitting end may be a terminal, and the receiving end may be a terminal.

[0122] This solution describes the solution in the embodiment of the present application using a first communication device and a second communication device as the execution entities. The first communication device can be either a transmitter or a receiver of a reference signal. Correspondingly, the second communication device can be either a receiver or a transmitter of a reference signal.

[0123] For example, the first communication device may be the network device in Figure 2, the chip (or circuit, or chip system) inside the network device, the terminal, or the chip (or circuit, or chip system) inside the terminal. The second communication device may be the network device in Figure 2, the chip (or circuit, or chip system) inside the network device, the terminal, or the chip (or circuit, or chip system) inside the terminal. The network device in the embodiment of the present application is, for example, the access network device in Figure 2.

[0124] The following is an introduction with reference to FIG3 .

[0125] Step 301: A first communication device obtains a first sequence set.

[0126] Step 302: The second communication device obtains a first sequence set.

[0127] Step 303: The first communication device transmits a signal according to a sequence in the first sequence set.

[0128] Correspondingly, the second communication device transmits a signal according to a sequence in the first sequence set.

[0129] In step 303, the first communication device may generate and send a first reference signal according to a sequence in the first sequence set. The second communication device may receive the reference signal according to a sequence in the first sequence set.

[0130] Alternatively, in step 303, the second communication device may generate and send a first reference signal according to a sequence in the first sequence set. The first communication device may receive a reference signal according to a sequence in the first sequence set.

[0131] The reference signal in the embodiments of the present application can be used for channel measurement and / or demodulation, etc. For related application scenarios, please refer to the above description and will not be repeated here. For example, the reference signal can be SRS or DMRS. For related content, please refer to the above introduction to reference signals and will not be repeated here.

[0132] The first sequence set includes at least one sequence. The sequence types in the first sequence set may include at least one, for example, the first sequence set includes a W sequence type, a Zadoff-Chu (ZC) sequence type, a Golay sequence pair type, or a Golay sequence set type. In one possible implementation, the first sequence set is composed of multiple sequences that meet certain conditions, or some or all of the sequences in the first sequence set meet certain conditions. The following uses the first sequence in the first sequence set as an example to describe that the first sequence belongs to the sequence in the first sequence set that meets these conditions. For example, the R-order coefficient of the first sequence is different from the R-order coefficient of at least one sequence in the first sequence set (e.g., the second sequence). Alternatively, the R-order coefficient of the first sequence is the same as the R-order coefficient of the second sequence in the first sequence set, but the (R-1)-order coefficient of the first sequence is different from the (R-1)-order coefficient of the second sequence. Alternatively, the (R-1)-order coefficient of the first sequence is associated with the first parameter and / or the second parameter, etc. The relevant content of the first sequence will be introduced later. For other sequences in the first sequence set, please refer to the relevant content of the first sequence (or the first sequence and the second sequence), which will not be repeated here.

[0133] The first sequence is an R-order exponential sequence, where R is an integer greater than 2. The second sequence is an R-order exponential sequence, where R is an integer greater than 2. In one implementation, the exponential sequence may be a complex exponential sequence. For example, the complex numbers and terms of π or 2π are extracted, and the remaining polynomial factors are written in the form of a polynomial.

[0134] In a possible implementation, the first sequence is a W sequence, and the second sequence is a W sequence. Generating SRS based on the W sequence has a large capacity and is more suitable for the next generation wireless communication system.

[0135] The W sequence can be an R-order exponential sequence, where R is an integer greater than 2. Thus, the self-ambiguity function of the W sequence type satisfies the Weil exponent and bound within a certain time-frequency offset range, has good autocorrelation, and can achieve better synchronization performance within a certain frequency offset range.

[0136] In one implementation, the exponential sequence can be a complex exponential sequence. For example, the complex numbers and π or 2π are extracted, and the remaining polynomial factors are written in the form of polynomials. The W sequence provided in the embodiment of the present application can be regarded as a new sequence. For example, the W sequence can also have other names, such as weil exponential sum sequence, etc. The specific name of the W sequence is not limited by the embodiment of the present application.

[0137] A W sequence is a set of sequences in which the self-ambiguity function of any sequence within a certain time-frequency offset range satisfies the Weil exponent and bound, and the mutual ambiguity function between any two sequences also satisfies the Weil exponent and bound within a certain time-frequency offset range. A sequence's self-ambiguity function within a certain time-frequency offset range satisfies the Weil exponent and bound if the maximum correlation value of the self-ambiguity function within the time-frequency offset range reaches a preset value. A mutual ambiguity function between two sequences satisfies the Weil exponent and bound if the peak energy of the mutual ambiguity function between the two sequences does not exceed a preset value within the time-frequency offset range.

[0138] For example, the W sequence satisfies the formula (1): s(n) = e-j2πf(n) / N*e-j2π(kn) / P...Formula (1)

[0139] In formula (1), e is the Euler constant, N is the generated length (or length) of the sequence, N can be a prime number, P is the number of cyclic shifts supported by the sequence; k is the identifier (or index) of the cyclic shift used; 0≤n≤(L-1). f(n) is an x-order polynomial, x is greater than 2, taking x=3 as an example, f(n)=(λn 3 +un 2+vn). Among them, λ is called the coefficient of the cubic term, u is called the coefficient of the quadratic term, and v is called the coefficient of the linear term. It can also be described as: the expression (or general term) of the sequence corresponding to the W sequence type is the above formula (1). The expression of the W sequence can be better compatible with the existing technology. In the embodiment of the present application, n represents the position of the element in the sequence, that is, the element is the nth element in the sequence. If the sequence position number starts from 0, 0≤n≤(L-1). If the sequence position number starts from 1, 1≤n≤L. The n of other formulas is also applicable and will not be repeated.

[0140] In formula (1), N can be determined based on L. N is the length of the generated sequence, which can also be called the generated length or the length of the sequence. L is the length of the sequence actually transmitted. For example, if L is 12, the first communication device needs to determine the value of N based on the value of L. The first communication device selects N as the largest prime number smaller than L, and selects N as 11.

[0141] For another example, the W sequence can also satisfy formula (2): s(n) = e-j2πf(n) / N...Formula (2)

[0142] In formula (2), e is the Euler constant, N is the generated length (or length) of the sequence, N can be a prime number, P is the number of cyclic shifts supported by the sequence; k is the identifier (or index) of the cyclic shift used; 0≤n≤(L-1). f(n) is an x-order polynomial, x is greater than 2, taking x=3 as an example, f(n)=(an 3 +bn 2 +cn+d). Where a is called the cubic coefficient, b is called the quadratic coefficient, and c is called the linear coefficient. It can also be described as: The expression (or general term) of the sequence corresponding to the W sequence type is the above formula (2). The expression of the W sequence can be more compatible with existing technologies.

[0143] For another example, the W sequence can also satisfy formula (3):

[0144] In formula (1) and formula (3), e is Euler's constant, N is the generated length (or length) of the sequence, 0≤n≤(L-1), U is an integer, v is an integer, and L is an integer. f(n) is an x-order polynomial, x is greater than 2, taking x=3 as an example, f(n)=an 3 +bn 2 +cn+d. Among them, a is called the coefficient of the cubic term, b is called the coefficient of the quadratic term, and c is called the coefficient of the linear term.

[0145] In the embodiment of the present application, the first sequence and the second sequence are taken as examples for description. In one possible implementation, the first sequence and the second sequence belong to a W sequence, for example, the sequence s(n) in formula (3).

[0146] For example, the first sequence is the sth sequence in the first sequence set. The first sequence corresponds to f s (n) satisfies formula (4): f s (n) = a s n R +b s n (R-1) +c s n (R-2) ….+d s n (R-R) ...Formula (4)

[0147] In formula (4), a s is the coefficient of the R-order term in the first sequence, b s is the (R-1)-order coefficient in the first sequence, c s is the (R-2)-order coefficient in the first sequence, d s is the coefficient of the (RR) term in the first sequence. Taking R as 3 as an example, formula (4) can be written as: s (n) = a s n 3 +b s n 2 +c s n+d s .

[0148] [Corrected 07.03.2025 according to Rule 91] For another example, the second sequence is the tth sequence in the first sequence set, and the f corresponding to the second sequence is t (n) satisfies formula (5): f t (n) = a t n R +b t n (R-1) +c t n (R-2) ....+d t n (R-R) ...Formula (5)

[0149] In formula (5), a t is the coefficient of the R-order term in the first sequence, b t is the (R-1)-order coefficient in the first sequence, c t is the (R-2)-order coefficient in the first sequence, d t is the coefficient of the (RR) term in the first sequence. Taking R as 3 as an example, formula (4) can be written as: t (n) = a t n 3 +b t n 2 +ct n+d t .

[0150] The W sequence is correlated with the W sequence without time offset and frequency offset to obtain the maximum correlation value. The correlation value is normalized, that is, when the W sequence and the W sequence without time offset and frequency offset are both unit energy sequences, the maximum normalized correlation value is 1. When N is a prime number, the two W sequences have the same cubic coefficient but different quadratic coefficients. The maximum normalized cross-correlation value of the two W sequences is

[0151] For example, FIG4 exemplifies a schematic diagram of the normalization of the self-ambiguity function value of the W sequence. In FIG4 , the x-axis represents the frequency offset, the y-axis represents the time domain offset, and the z-axis represents the normalized correlation value. In the example shown in FIG4 , the sequence is mapped to different time domain symbols as an example for demonstration. For example, the length of the W sequence is 127, that is, the W sequence includes 127 elements. It can be seen from FIG4 that when x=0, y=0, that is, there is no time offset and frequency offset, the value on the z-axis is normalized to a maximum of 1, and at positions other than x=0, y=0, the value on the z-axis is normalized to a maximum of

[0152] The present invention uses a W sequence as a generation sequence for a reference signal (e.g., an SRS). This sequence can be used not only in single-carrier systems but also in orthogonal frequency division multiplexing (OFDM) systems. At least one element of a W sequence is mapped to multiple subcarriers in an OFDM system. The frequency domain positions of the multiple subcarriers can be continuous or discrete. Furthermore, when the frequency domain positions of the multiple subcarriers are discrete, the frequency domain spacing of the multiple subcarriers can be equally spaced or unevenly spaced, without limitation.

[0153] For example, a 127-bit long W sequence can be mapped on the 127 subcarriers of the OFDM system in a continuous mapping manner, that is, the first element of the W sequence is mapped on the first subcarrier of the 127 subcarriers in the OFDM system, and the second element is mapped on the second subcarrier of the 127 subcarriers in the OFDM system, and so on. i The element is mapped to the kth i on a subcarrier.

[0154] For another example, the first element of the W sequence is mapped to the first subcarrier of the 127 subcarriers in the OFDM system, and the second element is mapped to the third subcarrier of the 127 subcarriers in the OFDM system, and so on. i The element is mapped in the 2kth i-1 subcarrier.

[0155] [Corrected 07.03.2025 according to Rule 91] In the embodiments of the present application, the first communication device may also make certain adjustments to the W sequence, such as truncating, puncturing, or cyclically shift-extending the sequence, and then mapping it to multiple subcarriers of the OFDM system in a continuous mapping or intermittent mapping manner. When the W sequence is applied to the OFDM system, its ambiguity function still satisfies the Weil exponent and bound. The ambiguity function graph is shown in FIG5 , where the coordinate axes have the same meaning as in FIG4 .

[0156] For example, please refer to Figure 5, which shows a schematic diagram of the normalization of the self-ambiguity function value of the W sequence. In Figure 5, the x-axis represents the frequency offset, the y-axis represents the time domain offset, and the z-axis represents the normalized correlation value. Figure 5 takes the mapping of the W sequence on multiple subcarriers in the frequency domain of an orthogonal frequency division multiplexing (OFDM) as an example. Unless otherwise stated, this application takes the mapping of the sequence in the frequency domain using OFDM as an example. Take the length of the W sequence as 127 as an example, that is, the W sequence includes 127 elements. It can be seen from Figure 5 that when x=0, y=0, that is, there is no time offset and frequency offset, the value on the z-axis is normalized to a maximum of 1, and at positions other than x=0, y=0, the value on the z-axis is normalized to a maximum of

[0157] In the above introduction to the use of W sequences, the values ​​of the ambiguity functions involved do not take into account the case of signal oversampling, that is, the time offset corresponds to the time domain cyclic shift of an integer number of sampling points where the non-oversampled signal is located, and the frequency offset corresponds to the frequency offset of the non-oversampled signal being an integer number of frequency domain subcarriers, that is, after the frequency domain cyclic shift is an integer number of subcarriers, it is mapped to an OFDM symbol. When there is a case where the signal is oversampled in the time domain and / or frequency domain, the ambiguity function value may be improved accordingly compared to the case of non-oversampling. When not oversampled, the sidelobe peak of the ambiguity function of the signal is low, and the sidelobe peak of the ambiguity function after oversampling will also be lower. Among them, the self-ambiguity function is defined as the value corresponding to the origin of the XY plane as shown in Figures 4 and 5; the mutual ambiguity function is defined as the entire XY plane as shown in Figures 4 and 5.

[0158] The sequences in the first sequence set can be frequency-domain mapped based on a mapping structure of a first comb value M. M can be greater than 1 or equal to 1. When M is equal to 1, it can be understood that the signal corresponding to the first sequence is continuously mapped on the frequency domain resources. When M is greater than 1, it can also be regarded as that at least one element included in the signal corresponding to the first sequence is mapped to multiple REs of a time-frequency symbol, the frequency domain positions of the multiple REs are spaced, and the frequency domain distances of the multiple REs are equally spaced (see the description of FIG1C above).

[0159] For example, if the first comb tooth value M corresponding to the first sequence is 4, then when the signal corresponding to the first sequence is mapped to the frequency domain resources, it is mapped every 4 frequency domain units (e.g., REs). For example, referring to FIG1C (a), the shaded portion can be regarded as the frequency domain resources occupied by the signal corresponding to the first sequence, and the unshaded frequency domain resources are not mapped to the signal corresponding to the first sequence. This sequence mapping method will affect the fuzzy function shape.

[0160] For example, consider the 11-bit long W sequence {s(0), s(1), ..., s(10)}. This W sequence consists of 11 elements, with s(0), s(1), ..., s(10) representing the 11 elements in the sequence. For example, s(0) is the first element in the sequence, s(1) is the second element in the sequence, and so on, s(10) is the 11th element in the sequence. Assume that the mapping method corresponding to this W sequence is based on the first comb tooth value M, where M is 4. For example, this W sequence is sequentially mapped to RE#0, RE#4, RE#8, ... After the W sequence is mapped based on the first comb value 4, the signal corresponding to the sequence can be considered to be generated by a 44-bit sequence. This 44-bit sequence can be considered to be generated by inserting three zeros after each element in the original W sequence {s(0), s(1), …, s(10)}. This 44-bit sequence can be written as {s(0), 0, 0, 0, s(1), 0, 0, 0, …, s(10), 0, 0, 0}. In this case, a schematic diagram of the ambiguity function can be seen in Figure 6.

[0161] Figure 6 shows a schematic diagram of the normalization of the self-ambiguity function value of the W sequence. In Figure 6, the x-axis represents the frequency offset, the y-axis represents the time domain offset, and the z-axis represents the normalized correlation value. As can be seen from Figure 6, when the first comb tooth value is an integer greater than 1, the comb tooth structure will cause adjacent points in the frequency domain to be distanced apart, and multiple peaks will appear in the time domain. Assume that the first comb tooth value M is an integer greater than 1, for example, M=4. If only the unilateral ambiguity function is considered, the number of single peaks can be equal to M and can be distributed more evenly; the distance between adjacent points in the frequency domain can be distanced to M times the original distance. Based on the above analysis, it can be seen that the interference between sequences mapped based on the first comb tooth value M is large, and the ability to resist frequency domain offset is poor.

[0162] Based on the above analysis, the embodiment of the present application provides a possible implementation method for improving the ability of the sequences in the first sequence set to resist frequency domain offset. For example, the (R-1)-order coefficient of the first sequence is associated with a first parameter, and the first parameter is associated with the first comb value corresponding to the first sequence. This solution can improve the ability of the first sequence to resist frequency domain offset. For example, the first sequence and the second sequence can be within the range of the first frequency offset value (for example, ±Δ F For example, the first sequence and the second sequence will not be mutually blurred and produce peaks under the influence of arbitrary Doppler in this range, and the first sequence and the second sequence will have little mutual interference, thereby improving communication performance.

[0163] In an embodiment of the present application, in order to improve the ability of the sequences in the first sequence set to resist frequency domain offset, the present application may provide several possible implementation methods, in which the sequences in the first sequence set may be limited to satisfy certain conditions, thereby improving the ability of the sequences in the first sequence set to resist frequency domain offset. Two possible implementation methods are exemplified below by implementation method A and implementation method B. In implementation method A, the R-order coefficients corresponding to the first sequence and the second sequence are different. In implementation method B, the (R-1)-order coefficient of the first sequence is associated with the first parameter. Implementation method A and implementation method B may be executed separately. For example, in implementation method B, the R-order coefficients corresponding to the first sequence and the second sequence may be the same. In another possible implementation method, implementation method A and implementation method B may also be used in combination. For example, in implementation method B, the R-order coefficients corresponding to the first sequence and the second sequence may also be different.

[0164] In implementation mode A, the first sequence and the second sequence in the first sequence set meet the first condition, thereby improving the ability of the first sequence to resist frequency domain offset.

[0165] For example, the first condition includes: the coefficient of the R-order term corresponding to the first sequence is different from the coefficient of the R-order term corresponding to the second sequence.

[0166] For example, in this example, R is 3, and the f(n) corresponding to the first sequence is the aforementioned f s (n), the f(n) corresponding to the second sequence is the aforementioned f t (n). The first condition includes: a s ≠a t .

[0167] When the coefficient of the R-order term corresponding to the first sequence and the coefficient of the R-order term corresponding to the second sequence are different between the first sequence and the second sequence, the cross-correlation value between the first sequence and the second sequence is no greater than a certain value within a certain time-frequency offset range. After the reference signal generated by the first communication device based on the first sequence undergoes a frequency domain offset, the likelihood that the receiving end will mistakenly identify the received sequence as the second sequence is low, and the interference between the reference signal generated based on the first sequence and the reference signal generated based on the second sequence is low, thereby improving the ability of the sequences in the first sequence set to resist frequency domain offset, thereby improving communication performance.

[0168] In one possible implementation, in implementation A, the (R-1)-order coefficient of the first sequence can be flexibly selected. For example, the (R-1)-order coefficient of the first sequence can be the same as or different from the (R-1)-order coefficient of the second sequence. Because the coefficient of the R-order term corresponding to the first sequence is different from the coefficient of the R-order term corresponding to the second sequence, regardless of how the (R-1)-order coefficient of the first sequence is selected, the first sequence can have a good ability to resist frequency domain offset. It can be seen that this solution can improve the flexibility of selecting the (R-1)-order coefficient of the first sequence.

[0169] In implementation mode B, the (R-1)-order coefficient of the first sequence is determined according to some parameters, thereby improving the ability of the first sequence to resist frequency domain offset.

[0170] In implementation B, in one possible implementation, the coefficient of the R-order term corresponding to the first sequence is the same as the coefficient of the R-order term corresponding to the second sequence. The same R-order term coefficients for the first and second sequences may result in significant interference between the first and second sequences. To reduce interference, an embodiment of the present application provides a possible solution. For example, the (R-1)-order term coefficient of the first sequence is determined based on certain parameters, thereby improving the first sequence's ability to resist frequency domain offset and thereby improving communication performance.

[0171] In another possible implementation, the coefficient of the (R-1) order term of the first sequence is determined according to some parameters, which may result in the coefficient of the (R-1) order term corresponding to the first sequence being different from the coefficient of the (R-1) order term corresponding to the second sequence. For example, in this example, R is 3, and the f(n) corresponding to the first sequence is the aforementioned f s (n) (Formula (3)), the f(n) corresponding to the second sequence is the aforementioned f t (n)(Formula (4)), then: a s =a t =a, b s ≠b tThe relevant parameters can be found in the introduction of the aforementioned formula (3) and formula (4). In this embodiment, since the (R-1)-order coefficient of the first sequence is determined according to some parameters, the ability of the first sequence to resist frequency domain offset can be improved, thereby improving communication performance.

[0172] In implementation B, in one possible implementation, the coefficient of the R-order term corresponding to the first sequence may be different from the coefficient of the R-order term corresponding to the second sequence. In this case, if the coefficient of the (R-1)-order term of the first sequence is determined based on certain parameters, the ability of the first sequence to resist frequency domain offset can be further improved, thereby improving communication performance.

[0173] For example, in implementation B, the (R-1)-order coefficient of the first sequence is associated according to at least one of the following parameters B1 (first parameter), parameter B2 (second parameter), parameter B3 (coefficient of the R-order term corresponding to the first sequence), parameter B4 (generation length (or length) of the first sequence), parameter B5 (coefficient of the (R-1)-order coefficient corresponding to the second sequence) and parameter B6 (comb offset value of the second sequence).

[0174] Parameter B1, a first parameter, is associated with a first comb tooth value and / or a comb tooth offset value corresponding to the first sequence.

[0175] The first comb tooth value is equal to 1 or an integer greater than 1.

[0176] The first comb value can also be replaced by the first comb number, which can be represented by an integer. The first comb value selected in the embodiment of the present application can be one of the comb value sets. The comb value set includes one or more comb values. There may be multiple cases for the comb value set. For example, if there are L1 comb values ​​in total, the comb value set can be [0, 1, ..., L1-1], or the comb value set can be [1, 2, ..., L1]. Unless otherwise specified, the present invention will be described as taking the comb value set [1, 2, ..., L1] as an example.

[0177] In one design, the transmitter of the reference signal (the first communication device or the second communication device) may map the signal corresponding to the selected first sequence to the corresponding time-frequency resource in step 303 to generate a reference signal. For example, each element in the signal corresponding to the first sequence may be mapped to a resource element (RE) to generate a reference signal. For example, in orthogonal frequency division multiplexing (OFDM), a time domain symbol includes multiple REs. The transmitter of the reference signal (the first communication device or the second communication device) may map at least one element included in the signal corresponding to the first sequence to multiple REs of a time-frequency symbol. The frequency domain positions of the multiple REs may be continuous or discrete, etc. Furthermore, when the frequency domain positions of the multiple REs are discrete, the frequency domain distances of the multiple REs may be equally spaced or unequally spaced, etc., without limitation.

[0178] In one possible implementation, the reference signal transmitter (the first communication device or the second communication device) may map the signal corresponding to the first sequence to the corresponding time-frequency resource based on the first comb value M1. The first comb value M may be 1 or an integer greater than 1. In the embodiments of the present application, M represents the first comb value.

[0179] When M is 1, it can also be regarded as the transmitter of the reference signal (the first communication device or the second communication device) mapping at least one element included in the signal corresponding to the first sequence to multiple REs of a time-frequency symbol, and the frequency domain positions of the multiple REs are continuous.

[0180] When M is greater than 1, it can also be regarded as the transmitter of the reference signal (the first communication device or the second communication device) mapping at least one element included in the signal corresponding to the first sequence to multiple REs of a time-frequency symbol, and the frequency domain positions of the multiple REs are spaced, and the frequency domain distances of the multiple REs are equally spaced (see the description of the aforementioned Figure 1C).

[0181] Because the first comb value is associated with the frequency domain resources of the signal mapping corresponding to the first sequence, the first sequence's ability to resist frequency offset is also affected by the first comb value. In this solution, the (R-1)-order coefficient of the first sequence is associated with the first parameter, and the first parameter is associated with the first comb value corresponding to the first sequence. This improves the rationality of the (R-1)-order coefficient setting of the first sequence, thereby improving the first sequence's ability to resist frequency domain offset and thus improving communication performance.

[0182] The comb offset value of the first sequence affects the frequency offset resistance of the first and second sequences. In this solution, the (R-1)-order coefficient of the first sequence is associated with the comb offset value corresponding to the first sequence. This allows for a more reasonable (R-1)-order coefficient of the first sequence based on the comb offset value corresponding to the first sequence, thereby improving the first sequence's ability to resist frequency offset and, consequently, communication performance.

[0183] Parameter B2 is a second parameter. For example, the second parameter is a constant. For example, the second parameter is associated with the first frequency offset value.

[0184] The first frequency offset value may be, for example, defined by a protocol, or pre-configured, or indicated by a network device. The first frequency offset value may be a frequency offset value that the first sequence needs to resist.

[0185] For example, the first frequency offset value may be a constant, or may be a maximum frequency offset value allowed by the system. For example, the first frequency offset value may be a maximum frequency offset value allowed by the system.

[0186] For another example, the first frequency offset value is associated with the frequency offset value between the signal corresponding to the first sequence and the signal corresponding to the second sequence. For example, the first frequency offset value is greater than or equal to the frequency offset value between the signal corresponding to the first sequence and the signal corresponding to the second sequence. Since the first sequence and the second sequence may experience frequency offset during transmission, if the first sequence has a low ability to resist frequency offset, the receiving end may mistakenly identify the received signal corresponding to the first sequence as the second sequence. If the first sequence has a high ability to resist frequency offset, the likelihood that the receiving end will mistakenly identify the received signal corresponding to the first sequence as the second sequence is lower. Since the quadratic term coefficient of the first sequence is set based on the first frequency offset value, the ability of the first sequence to resist the first frequency offset value can be improved. After the first sequence undergoes the frequency offset corresponding to the first frequency offset value, the likelihood that the receiving end will identify the received signal corresponding to the first sequence as another sequence is reduced. It can be seen that this solution can improve the signal's ability to resist frequency offset, thereby improving communication performance.

[0187] Parameter B3, the coefficient of the R-order term corresponding to the first sequence.

[0188] In this scheme, the (R-1)-order term coefficient of the first sequence is associated with the coefficient of the R-order term corresponding to the first sequence, thereby improving the rationality of the setting of the (R-1)-order term coefficient of the first sequence. This can be used to improve the correlation between two different sequences in the first sequence set when there is a frequency offset within a certain range, thereby improving the detection performance of the sequences in the first sequence set, and then improving the communication performance.

[0189] Parameter B4, the generated length (or length) of the first sequence.

[0190] When the first sequence is the aforementioned W sequence, the generated length (or length) of the first sequence can be regarded as N in the formula corresponding to the aforementioned W sequence.

[0191] The period of the first sequence can be determined by the generated length of the first sequence. Since the frequency offset resistance of the first sequence is also affected by the generated length (or lengths) of the first sequence, in this solution, the (R-1)-order coefficient of the first sequence is associated with the generated length (or lengths) of the first sequence. This improves the rationality of the (R-1)-order coefficient setting of the first sequence, thereby improving the first sequence's ability to resist frequency domain offset and, consequently, improving communication performance.

[0192] Parameter B5, the coefficient of the (R-1)-order term corresponding to the second sequence.

[0193] The first and second sequences may experience frequency offset during transmission. Without targeted design, the receiver may mistakenly identify the signal corresponding to the first sequence as the second sequence. With a reasonable frequency offset resistance design, the likelihood of the receiver mistakenly identifying the signal corresponding to the first sequence as the second sequence is reduced. Therefore, it is necessary to jointly design all sequences in the first sequence set. In this scheme, the (R-1)-order coefficient of the first sequence is associated with the coefficient of the (R-1)-order coefficient of the second sequence. This allows a more reasonable (R-1)-order coefficient of the first sequence to be set based on the coefficient of the (R-1)-order coefficient of the second sequence, thereby improving the first sequence's ability to resist frequency domain offset and, consequently, improving communication performance.

[0194] Parameter B6, the comb offset value corresponding to the second sequence.

[0195] The comb offset values ​​corresponding to the first sequence and the comb offset values ​​corresponding to the second sequence are the same or different.

[0196] In an embodiment of the present application, one or more sequences corresponding to a comb offset value may be considered as a set of sequences corresponding to the comb offset value. When the comb offset value corresponding to a first sequence and the comb offset value corresponding to a second sequence are the same, the first sequence and the second sequence may also be considered as sequences in a set of sequences corresponding to the same comb offset value. When the comb offset value corresponding to the first sequence and the comb offset value corresponding to the second sequence are different, the first sequence and the second sequence may also be considered as sequences in a set of sequences corresponding to different comb offset values.

[0197] For example, the comb teeth values ​​corresponding to sequence #K1 and sequence #K2 are the same, both being the first comb teeth value, such as 4. The comb teeth offset values ​​corresponding to sequence #K1 and sequence #K2 may be the same or different. For example, the comb teeth offset value (or comb teeth index) corresponding to sequence #K1 is 1, and the comb teeth offset value (or comb teeth index) corresponding to sequence #K2 is 2. When there is a frequency offset within a certain range between a sequence (e.g., sequence #K1) mapped to a resource corresponding to a first comb teeth offset value (e.g., comb teeth offset value 1) and a sequence (e.g., sequence #K2) mapped to a resource corresponding to a second comb teeth offset value (e.g., comb teeth offset value 2), the sequences in the sequence set corresponding to the first comb teeth offset value (e.g., comb teeth offset value 1) and the sequence set corresponding to the second offset value (e.g., comb teeth offset value 2) can be jointly designed to optimize the correlation between the sequences in the sequence set corresponding to the first comb teeth offset value (e.g., sequence #K1) and the sequences in the sequence set corresponding to the second offset value (e.g., sequence #K2).

[0198] The comb offset values ​​of the second sequence and the comb offset values ​​corresponding to the first sequence affect the frequency offset resistance of the first and second sequences. In this solution, the (R-1)-order coefficient of the first sequence is associated with the comb offset values ​​corresponding to the second sequence. This allows for a more reasonable (R-1)-order coefficient of the first sequence based on the comb offset values ​​corresponding to the second sequence, thereby improving the first sequence's ability to resist frequency domain offset and, consequently, communication performance.

[0199] In implementation B, the (R-1)-order coefficient of the first sequence may satisfy certain conditions, and the (R-1)-order coefficient of the first sequence that satisfies the conditions may improve the ability of the first sequence to resist frequency domain offset. The signals corresponding to the first sequence and the second sequence may be frequency-domain mapped based on the first comb value. For example, the first comb value M is 4. The signals corresponding to the first sequence and the second sequence may be mapped every 4 frequency domain units. Referring to FIG. 1C above, for example, the distribution of frequency domain resources occupied by the signals corresponding to the first sequence or the second sequence may be shown in any one of (a), (b), (c) and (d) in FIG. 1C. The comb offset values ​​corresponding to the first sequence and the second sequence may be the same or different.

[0200] The following describes several possible conditions that the (R-1)-order coefficient of the first sequence must satisfy, using Implementation C1 and Implementation C2 as examples. Implementation C1 uses the example of the first and second sequences having the same comb offset values. Implementation C2 uses the example of the first and second sequences having different comb offset values.

[0201] In implementation C1, the comb tooth offset values ​​corresponding to the first sequence and the second sequence are the same.

[0202] In one possible implementation, the comb offset values ​​corresponding to the first sequence and the second sequence being the same may include: the distribution structure of frequency domain resources occupied by the signals corresponding to the first sequence and the second sequence being the same. For example, the signals corresponding to the first sequence and the second sequence are mapped to the frequency domain resources based on the first comb value M, and the index of the frequency domain unit to which the zth element in the signal corresponding to the first sequence is mapped is the same as the index of the frequency domain unit to which the zth element in the signal corresponding to the second sequence is mapped.

[0203] Please refer to Figure 1C. For example, the signal corresponding to the first sequence and the signal corresponding to the second sequence are respectively mapped to the frequency domain resources based on the first comb value M. The comb offset values ​​corresponding to the first sequence and the second sequence are different. The frequency domain unit mapped to the signal corresponding to the first sequence is different from the frequency domain unit mapped to the signal corresponding to the second sequence. For example, the frequency domain unit mapped to the first element in the signal corresponding to the first sequence is RE#0, the frequency domain unit mapped to the second element in the signal corresponding to the first sequence is RE#4, and the frequency domain unit mapped to the third element in the signal corresponding to the first sequence is RE#8 (the RE mapping structure diagram of the first reference signal can be seen in (a) of Figure 1C). RE#0, RE#4 and RE#8 can be regarded as the indexes of the frequency domain units mapped to the signal corresponding to the first sequence. The frequency domain unit mapped to the first element in the signal corresponding to the second sequence is RE#0, the frequency domain unit mapped to the second element in the signal corresponding to the second sequence is RE#4, and the frequency domain unit mapped to the third element in the signal corresponding to the second sequence is RE#8. The RE mapping structure of the second reference signal can be seen in Figure 1C (a), where RE#0, RE#4, and RE#8 can be regarded as the indexes of the frequency domain units mapped to the signal corresponding to the second sequence. The signal corresponding to the first sequence and the signal corresponding to the second sequence may occupy the same time domain resources.

[0204] For example, in this example, the f(n) corresponding to the first sequence is the aforementioned f s (n) (Formula (4)), the f(n) corresponding to the second sequence is the aforementioned f t (n)(Formula (5)), a s =a t =a, b s and b t Satisfy at least one of the following formulas (6), (7), or (8): (3a×μ) mod N = (b s -b t )……Formula (6); (3a×μ)mod N=(b t -b s )...Formula (7);

[0205] In formula (6), formula (7) or formula (8), a is the R-order coefficient corresponding to the first sequence and the second sequence, b is s is the (R-1) order coefficient corresponding to the first sequence, b t is the (R-1)-order coefficient corresponding to the second sequence, N is the generated length (or length) of the first sequence, mod represents the modulo operation, and μ can be associated with the first comb tooth value corresponding to the first sequence.

[0206] It can be seen from formula (6), formula (7) or formula (8) that there is a correlation between the (R-1)-order coefficient of the first sequence and the (R-1)-order coefficient of the second sequence. The two (R-1)-order coefficients can be reasonably set based on parameters such as μ, thereby improving the ability of the first sequence and the second sequence to resist frequency offset.

[0207] In a possible implementation, μ satisfies the following formula (9):

[0208] In formula (9), Δ F is the first frequency offset value, M is the first comb value, and M is 1 or an integer greater than 1.

[0209] In a possible implementation, when M is 1, formula (9) can also be replaced by: μ>(2Δ F +1), Δ F When M is 1, it can also be considered that the signal corresponding to the first sequence is not mapped according to the first comb value, but is continuously mapped in the frequency domain.

[0210] For another example, i is the comb offset value corresponding to the first sequence, b i,k is the kth element in the (R-1)th order coefficient set corresponding to the first sequence, b i,k Satisfy formula (10): b i,k =3a(k(2Δ F +1)+h i )...Formula (10)

[0211] j is the comb offset value corresponding to the second sequence, b j,q is the qth element in the (R-1)th order coefficient set corresponding to the first sequence, b j,q Satisfy formula (11): b j,q =3a(q(2Δ F +1)+h j )...Formula (11)

[0212] In formula (10) and formula (11), a is the R-order coefficient of the first and second sequences, and k is the element b in the (R-1)-order coefficient set of the first sequence.i,k The index of q is the element b in the (R-1) order coefficient set corresponding to the second sequence j,q The index of Δ F is the first frequency offset value, h i and h j is a constant (same or different). i It is the constant corresponding to i, or it can be the offset parameter corresponding to the comb offset value i. j It is a constant corresponding to j, or it can be an offset parameter corresponding to the comb offset value j.

[0213] In one possible implementation, in the above formula (10) and formula (11), i and j are the same. In this implementation, b i,k and b j,q The relationship can satisfy at least one of formula (6), formula (7) and formula (8), and can also satisfy formula (9).

[0214] It can be seen from the above two examples that the signals corresponding to the first sequence and the second sequence are mapped on the frequency domain resources based on the first comb value M. When the index of the frequency domain unit mapped to the signal corresponding to the first sequence is the same as the index of the frequency domain unit mapped to the signal corresponding to the second sequence, and μ satisfies formula (9) or formula (10), in ±Δ F There may not be multiple peaks within the frequency deviation range of the subcarrier, and within ±Δ F Within a certain time offset (e.g. one or more sampling points) and frequency offset (e.g. one or more subcarriers), based on f s (n) The reference signal generated by the corresponding W sequence is the same as the reference signal generated by the f t (n) The mutual ambiguity function of the reference signal generated by the corresponding W sequence does not have a point where the normalized correlation peak is 1, and the maximum value of the normalized mutual ambiguity is It can be seen that by reasonably setting the (R-1)-order coefficients of the first sequence and the second sequence (for example, μ satisfies formula (9)), the self-ambiguity functions of the first sequence and the second sequence within a certain time-frequency offset range satisfy the weil exponent and bound, and have good correlation. Subsequently, when the first sequence and the second sequence are used to transmit the reference signal, the signal interference corresponding to the first sequence and the second sequence is small, thereby improving the communication performance.

[0215] In the embodiments of the present application, the frequency offset corresponding to a sequence may refer to the signal form of the sequence after being cyclically shifted and then mapped onto the subcarriers in the OFDM system. The time offset may refer to the signal form of the signal corresponding to a sequence after being cyclically shifted in the time domain after being mapped in the OFDM frequency domain.

[0216] In implementation C2, the comb tooth offset values ​​corresponding to the first sequence and the second sequence are different.

[0217] In one possible implementation, the comb tooth offset values ​​corresponding to the first sequence and the second sequence are different. Or, the distribution structure of the frequency domain resources occupied by the signals corresponding to the first sequence and the second sequence is different. For example, the signals corresponding to the first sequence and the second sequence are mapped to the frequency domain resources based on the first comb tooth value M, and the index of the frequency domain unit mapped to the zth element in the signal corresponding to the first sequence is different from the index of the frequency domain unit mapped to the zth element in the signal corresponding to the second sequence.

[0218] Please refer to Figure 1C. For example, the signal corresponding to the first sequence and the signal corresponding to the second sequence are respectively mapped to the frequency domain resources based on the first comb value M. The frequency domain unit mapped to the signal corresponding to the first sequence is different from the frequency domain unit mapped to the signal corresponding to the second sequence. For example, the frequency domain unit mapped to the first element of the signal corresponding to the first sequence is RE#0, the frequency domain unit mapped to the second element of the signal corresponding to the first sequence is RE#4, and the frequency domain unit mapped to the third element of the signal corresponding to the first sequence is RE#8 (the RE mapping structure diagram of the first reference signal can be shown in Figure 1C (a)). RE#0, RE#4, and RE#8 can be regarded as the index of the frequency domain unit mapped to the signal corresponding to the first sequence. The frequency domain unit mapped to the first element of the signal corresponding to the second sequence is RE#1, the frequency domain unit mapped to the second element of the signal corresponding to the second sequence is RE#5, and the frequency domain unit mapped to the third element of the signal corresponding to the second sequence is RE#9. The RE mapping structure diagram of the second reference signal can be shown in Figure 1C (b). RE#1, RE#5, and RE#9 can be regarded as the index of the frequency domain unit mapped to the signal corresponding to the first sequence. It can be seen that the index of the frequency domain unit mapped to one (or any one) element in the signal corresponding to the first sequence is different from the index of the frequency domain unit mapped to at least one (or each) element in the signal corresponding to the second sequence. The signal corresponding to the first sequence and the signal corresponding to the second sequence may occupy the same time domain resources. The RE mapping structure diagram of the second reference signal can also be shown in (c) of Figure 1C, and RE#2, RE#6 and RE#10 can be regarded as the index of the frequency domain unit mapped to the signal corresponding to the second sequence. Alternatively, the RE mapping structure diagram of the second reference signal can also be shown in (d) of Figure 1C, and RE#3, RE#7 and RE#11 can be regarded as the index of the frequency domain unit mapped to the signal corresponding to the second sequence.

[0219] In one possible implementation, μ satisfies the following formula (12): |M(y i,k -y j,q )+ij|≥(2Δ F +1)...Formula (12)

[0220] Where M is the first comb value, the first sequence and the second sequence are mapped based on the first comb value M, i is the comb offset value corresponding to the first sequence, y i,k with b i,k association, b i,k is the kth element in the (R-1)th order coefficient set corresponding to the first sequence, j is the comb offset value corresponding to the second sequence, and y j,q with b j,q association, b j,q is the qth element in the (R-1)th order coefficient set corresponding to the second sequence.

[0221] For example, y i,k with b i,k Association, for example, b i,k =3a(y i,k +g i ).y j,q with b j,q Association, for example, b j,q =3a(y j,q +g j ). Where a is the R-order coefficient corresponding to the first and second sequences; g i and g j is a constant and can be the same or different.

[0222] In one possible implementation, b i,k The index of the frequency domain unit of the corresponding signal mapping is the same as b j,k The corresponding frequency domain unit indexes of the signal mapping are different. j,k It is the kth element in the (R-1)th order coefficient set corresponding to the sequence.

[0223] For example, b i,k Satisfying the above formula (10), b j,q Satisfies the above formula (11), where h in formula (10) and formula (11) j and h j Satisfy formula (13): h j -h i =x……Formula (13)

[0224] In formula (13), x satisfies arg min x (mod(xM-1,Δ F )=0), M is the first comb tooth value, Δ F is the first frequency offset value, arg represents the principal value of the complex argument, min represents the minimum value, and mod represents the modulo operation.

[0225] In one possible implementation, the comb offset values ​​corresponding to the first sequence and the second sequence are different, for example, i and j are not equal. By reasonably setting the (R-1)-order coefficients corresponding to the first sequence and the second sequence, the above formula (13) can be satisfied.

[0226] In another possible implementation, the comb offset values ​​corresponding to the first and second sequences are different, and i and j are adjacent, for example, j = i + 1, or i = j + 1. This application uses j = i + 1 as an example for illustration. By properly setting the (R-1)-order coefficients corresponding to the first and second sequences, the above formula (13) can be satisfied.

[0227] It can be seen from the above formula that when the comb offset values ​​corresponding to the first sequence and the second sequence are different, the selection of the (R-1)-order coefficients of the first sequence and the second sequence can be associated with the first comb value, and can also be associated with the index of the frequency domain unit to which the signals corresponding to the two sequences are respectively mapped, and can also be associated with the frequency domain offset value to be resisted (for example, Δ F ) association, based on this information, the (R-1)-order coefficients of the first sequence and the second sequence can be set more reasonably, thereby improving the frequency offset resistance of the sequence and further improving the communication performance.

[0228] The signals corresponding to the first sequence and the second sequence are mapped on the frequency domain resources based on the first comb tooth value M. When the index of the frequency domain unit to which the signal corresponding to the first sequence is mapped is different from the index of the frequency domain unit to which the signal corresponding to the second sequence is mapped, and the (R-1)-order coefficients of the first sequence and the second sequence satisfy formula (10), then within ±Δ F There may not be multiple peaks within the frequency deviation range of the subcarrier, and within ±Δ F Within a certain time offset (e.g. one or more sampling points) and frequency offset (e.g. one or more subcarriers), based on f s (n) The reference signal generated by the corresponding W sequence is the same as the reference signal generated by the f t (n) The mutual ambiguity function of the reference signal generated by the corresponding W sequence does not have a point where the normalized correlation peak is 1, and the maximum value of the normalized mutual ambiguity is It can be seen that when μ satisfies formula (10), the self-ambiguity functions of the first sequence and the second sequence within a certain time-frequency offset range satisfy the Weil exponent and bound, and the correlation is good. Then, when the first sequence and the second sequence are used to transmit the reference signal, the signal interference corresponding to the first sequence and the second sequence is small, thereby improving the communication performance.

[0229] The first sequence set may include multiple sequences. The comb offset values ​​corresponding to the multiple sequences may be the same or different. For multiple sequences with the same comb offset value, the solution provided in Implementation C1 above can be used to improve the frequency offset resistance of such sequences. For multiple sequences with different comb offset values, the solution provided in Implementation C2 above can be used to improve the frequency offset resistance of such sequences.

[0230] For example, for multiple sequences in the first sequence set, when the comb tooth offset values ​​corresponding to the multiple sequences are the same, the corresponding parameters in any (or each) sequence in the multiple sequences can satisfy the above formula (10). In this way, multiple sequences with the same comb tooth offset value in the first sequence set can be within ±Δ F subcarriers. For another example, for two sequences in the first sequence set, when the comb tooth offset values ​​corresponding to the two sequences are different, the corresponding parameters in the two sequences can satisfy the above formula (13), wherein the parameters corresponding to the two sequences can satisfy the above formula (10) and formula (11) respectively. In this way, multiple sequences corresponding to different comb tooth offset values ​​in the first sequence set can be made within ±Δ F The comb offset values ​​corresponding to the multiple sequences in the first sequence set can be the same or different. This can increase the number of sequences in the first sequence set, thereby increasing system capacity.

[0231] It is understood that in order to implement the functions in the above embodiments, the first communication device or the second communication device may include hardware structures and / or software modules corresponding to the execution of each function. Those skilled in the art should readily appreciate that, in combination with the units and method steps of the various examples described in the embodiments disclosed in this application, the present application can be implemented in the form of hardware or a combination of hardware and computer software. Whether a function is executed in hardware or in a manner driven by computer software depends on the specific application scenario and design constraints of the technical solution.

[0232] Based on the same concept, Figures 7 and 8 are schematic diagrams of the structures of possible communication devices provided by the embodiments of the present application. These communication devices can be used to implement the functions of the first communication device or the second communication device in the above-mentioned method embodiment, and thus can also achieve the beneficial effects possessed by the above-mentioned method embodiment. In the embodiment of the present application, the communication device can be the terminal device shown in Figure 2 above, the chip (or circuit, or chip system) inside the terminal device, the network device or the chip (or circuit, or chip system) inside the network device.

[0233] [Corrected 07.03.2025 in accordance with Rule 91] As shown in Figure 7, communication device 1300 includes a processing unit 1310 and a transceiver unit 1320. Communication device 1300 is configured to implement the functions of the first communication device or the second communication device in the method embodiment shown in Figure 3. Transceiver unit 1320 may also be referred to as a communication unit. Transceiver unit 1320 may include a transmitting unit and a receiving unit.

[0234] When the communication device 1300 is used to implement the functions of the first communication device or the second communication device in the method embodiment shown in Figure 3, in one possible implementation, the processing unit 1310 is used to obtain a first sequence set, and the processing unit 1310 is used to transmit a signal through the transceiver unit 1320 according to the first sequence.

[0235] For a more detailed description of the processing unit 1310 and the transceiver unit 1320 , reference may be made to the relevant description in the method embodiment shown in FIG. 3 .

[0236] As shown in Figure 8, the communication device 1400 includes a processor 1410. Optionally, the communication device 1400 also includes an interface circuit 1420. The processor 1410 and the interface circuit 1420 are coupled to each other. It is understandable that the interface circuit 1420 can be a transceiver or an input / output interface. The transceiver includes a transmitter and a receiver. The transmitter can be used to send information, and the receiver can be used to receive information. Other functions can be implemented by the processor. The input / output interface is used to input and / or output information. Output can be understood as sending, and input can be understood as receiving. Other functions can be implemented by the processor. Optionally, the communication device 1400 may also include a memory 1430 for storing instructions executed by the processor 1410 or storing input data required by the processor 1410 to execute instructions or storing data generated after the processor 1410 executes instructions.

[0237] When the communication device 1400 is used to implement the method shown in FIG. 3 , the processor 1410 is used to implement the functions of the processing unit 1310 , and the interface circuit 1420 is used to implement the functions of the transceiver unit 1320 .

[0238] When the above-mentioned communication device is a chip (or circuit, or chip system) applied to a terminal, the terminal chip (or circuit, or chip system) implements the function of the terminal device in the above-mentioned method embodiment. The terminal chip (or circuit, or chip system) receives information from the base station, which can be understood as the information being first received by other modules (such as radio frequency module or antenna) in the terminal, and then sent to the terminal chip (or circuit, or chip system) by these modules. The terminal chip (or circuit, or chip system) sends information to the base station, which can be understood as the information being first sent to other modules (such as radio frequency module or antenna) in the terminal, and then sent to the base station by these modules.

[0239] When the above-mentioned communication device is a chip (or circuit, or chip system) applied to a base station, the base station chip (or circuit, or chip system) implements the function of the network device in the above-mentioned method embodiment. The base station chip (or circuit, or chip system) receives information from the terminal, which can be understood as the information being first received by other modules in the base station (such as a radio frequency module or antenna), and then sent by these modules to the base station chip (or circuit, or chip system). The base station chip (or circuit, or chip system) sends information to the terminal, which can be understood as the information being sent to other modules in the base station (such as a radio frequency module or antenna), and then sent by these modules to the terminal.

[0240] In this application, when entity A sends information to entity B, A may send it directly to B or indirectly to B through another entity. Similarly, when entity B receives information from entity A, entity B may directly receive the information sent by entity A or indirectly receive the information sent by entity A through another entity. Entities A and B herein may be RAN nodes or terminals, or modules within a RAN node or terminal. The sending and receiving of information may be information exchange between a RAN node and a terminal, for example, between a base station and a terminal; the sending and receiving of information may also be information exchange between two RAN nodes, for example, between a CU and a DU; the sending and receiving of information may also be information exchange between different modules within a device, for example, between a terminal chip (or circuit, or chip system) and other modules in the terminal, or between a base station chip (or circuit, or chip system) and other modules in the base station.

[0241] It is understood that the processor in the embodiments of the present application may be a central processing unit (CPU), or may be other general-purpose processors, digital signal processors (DSP), application-specific integrated circuits (ASIC), field programmable gate arrays (FPGA), or other programmable logic devices, transistor logic devices, hardware components, or any combination thereof. The general-purpose processor may be a microprocessor or any conventional processor.

[0242] The method steps in the embodiments of the present application can be implemented in hardware or in software instructions that can be executed by a processor. The software instructions can be composed of corresponding software modules, and the software modules can be stored in random access memory, flash memory, read-only memory, programmable read-only memory, erasable programmable read-only memory, electrically erasable programmable read-only memory, registers, hard disks, mobile hard disks, compact disc read-only memory (CD-ROM) or any other form of storage medium well known in the art. An exemplary storage medium is coupled to the processor so that the processor can read information from the storage medium and write information to the storage medium. The storage medium can also be an integral part of the processor. The processor and the storage medium can be located in an ASIC. In addition, the ASIC can be located in a base station or a terminal. The processor and the storage medium can also be present in a base station or a terminal as discrete components.

[0243] In the above embodiments, all or part of the embodiments may be implemented using software, hardware, firmware, or any combination thereof. When implemented using software, all or part of the embodiments may be implemented in the form of a computer program product. A computer program product includes one or more computer programs or instructions. When the computer program or instructions are loaded and executed on a computer, all or part of the processes or functions of the embodiments of the present application are performed. The computer may be a general-purpose computer, a special-purpose computer, a computer network, a network device, a user device, or other programmable device. The computer program or instructions may be stored in a computer-readable storage medium or transferred from one computer-readable storage medium to another. For example, the computer program or instructions may be transferred from one website, computer, server, or data center to another website, computer, server, or data center via wired or wireless means. The computer-readable storage medium may be any available medium that can be accessed by a computer or a data storage device such as a server or data center that integrates one or more available media. The available media may be magnetic media, such as floppy disks, hard disks, or magnetic tapes; optical media, such as digital video disks; or semiconductor media, such as solid-state drives. The computer-readable storage medium may be a volatile or nonvolatile storage medium, or may include both volatile and nonvolatile types of storage media.

[0244] In the various embodiments of the present application, unless otherwise specified or there is a logical conflict, the terms and / or descriptions between different embodiments are consistent and can be referenced by each other. The technical features in different embodiments can be combined to form new embodiments according to their inherent logical relationships.

[0245] In this application, "at least one" means one or more, and "more" means two or more. "And / or" describes the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B can mean: A exists alone, A and B exist at the same time, and B exists alone, where A and B can be singular or plural. In the text description of this application, the character " / " generally indicates that the previous and next associated objects are in an "or" relationship; in the formula of this application, the character " / " indicates that the previous and next associated objects are in a "division" relationship. "Including at least one of A, B and C" can mean: including A; including B; including C; including A and B; including A and C; including B and C; including A, B and C.

[0246] It is understood that the various numbers involved in the embodiments of this application (such as the numerical numbers "first" and "second", and the letter numbers "A1, A2", "B1, B2", "C1, C2", etc.) are only for the convenience of description and are not intended to limit the scope of the embodiments of this application. The order of the sequence numbers of the above-mentioned processes does not mean the order of execution. The execution order of each process should be determined by its function and internal logic.

Claims

1. A communication method, characterized in that: include: Obtain a first sequence set, where the first sequence set includes a first sequence, the first sequence being an R-order exponential sequence, where R is an integer greater than 2, a coefficient of an (R-1)-order term corresponding to the first sequence being associated with a first parameter, and the first parameter being associated with a first comb tooth value corresponding to the first sequence; A signal is transmitted according to the first sequence.

2. The method according to claim 1, wherein The coefficient of the (R-1)-order term corresponding to the first sequence is also associated with a second parameter; The second parameter is a constant; and / or the second parameter is associated with the first frequency offset value.

3. The method according to claim 1 or 2, wherein: The coefficient of the (R-1)-order term corresponding to the first sequence is also associated with at least one of the following: The coefficient of the R-order term corresponding to the first sequence; a generated length of the first sequence; The comb tooth offset value corresponding to the first sequence.

4. The method according to claim 1, wherein The first sequence set further includes a second sequence, and the second sequence belongs to the R-times exponential sequence; The coefficient of the R-order term corresponding to the first sequence is different from the coefficient of the R-order term corresponding to the second sequence; or, when the coefficient of the R-order term corresponding to the first sequence is the same as the coefficient of the R-order term corresponding to the second sequence, the coefficient of the (R-1)-order term corresponding to the first sequence is also associated with the coefficient of the (R-1)-order term corresponding to the second sequence.

5. The method according to claim 4, wherein The coefficient of the (R-1)-order term corresponding to the first sequence is also associated with the comb offset value corresponding to the second sequence.

6. The method according to any one of claims 2 to 5, characterized in that The sequences in the first sequence set satisfy: or The e is the Euler constant, the f(n) is an R-order polynomial, the N is the generated length of the sequence, 0≤n≤(L-1), the U is an integer, the v is an integer, and the L is an integer.

7. The method according to claim 6, wherein When R is 3, The first sequence corresponds to f s (n) satisfies: f s (n) = a s n 3 +b s n 2 +c s n+d s ; The second sequence corresponds to f t (n) satisfies: f t (n) = a t n 3 +b t n 2 +c t n+d t ; Among them, a s ≠a t ;or, a s =a t =a,b s ≠b t 。 8. The method according to claim 7, wherein a s =a t =a, the b s and the b t Satisfy at least one of the following: (3a×μ)mod N=(b s -b t ); (3a×μ)mod N=(b t -b s ); ((((3a) N-2 b s mod N)-((3a) N-2 b t mod N))mod N)=μ.

9. The method according to claim 8, wherein The μ is associated with the first comb value.

10. The method according to claim 8 or 9, characterized in that The signal corresponding to the first sequence is mapped on the frequency domain resources based on the first comb tooth value, and the signal corresponding to the second sequence is mapped on the frequency domain resources based on the first comb tooth value; Δ F is the first frequency offset value, M is the first comb tooth value, and M is 1 or M is an integer greater than 1.

11. The method according to claim 7, wherein a s = a t When = a: b i,k = 3a(y i,k + g i ), b j,q = 3a(y j,q + g j )); |M(y i,k - y j,q ) + i - j| ≥ 2Δ F + 1; Wherein, the i is the comb offset value corresponding to the first sequence, and the b i,k is the kth element in the (R-1)th order coefficient set corresponding to the first sequence, j is the comb offset value corresponding to the second sequence, and b j,q is the qth element in the (R-1)th order coefficient set corresponding to the second sequence, g i and g j is a constant, Δ F is the first frequency offset value, and M is the first comb tooth value.

12. The method according to claim 11, wherein The i is different from the j.

13. The method according to claim 7, wherein a s =a t =a: b i,k =3a(k(2Δ F +1)+h i ) b j,q =3a(q(2Δ F +1)+h j ) Wherein, the i is the comb offset value corresponding to the first sequence, and the b i,k is the kth element in the (R-1)th order coefficient set corresponding to the first sequence, where k is b i,k The index of the element in the (R-1)th order coefficient set corresponding to the first sequence, j is the comb offset value corresponding to the second sequence, and b j,q is the qth element in the (R-1)th order coefficient set corresponding to the second sequence, where q is b i,q The index of the element in the (R-1)th order coefficient set corresponding to the first sequence, h i and h j is a constant, Δ F is the first frequency offset value.

14. The method according to claim 13, wherein The i is the same as the j.

15. The method according to claim 11, wherein h j -h i =x Where x satisfies argmin x (mod(xM-1,Δ F )=0), M is the first comb tooth value, Δ F is the first frequency offset value.

16. The method according to claim 15, wherein The i is different from the j.

17. The method according to claim 15 or 16, wherein: j=i+1 or i=j+1.

18. A communication device, characterized in that: Comprising means for performing the method according to any one of claims 1 to 17.

19. A communication device, characterized in that: The system comprises a processor, wherein the processor implements the method according to any one of claims 1 to 17 through logic circuits or executing computer programs or instructions.

20. A computer-readable storage medium, characterized in that The storage medium stores a computer program or instruction. When the computer program or instruction is executed by the communication device, the method according to any one of claims 1 to 17 is implemented.

21. A computer program product, characterized in that The computer program product stores a computer program, wherein the computer program includes program instructions. When the program instructions are executed by a computer, the method according to any one of claims 1 to 17 is implemented.

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