Communication method and apparatus

Abstract

Disclosed in the embodiments of the present application are a communication method and apparatus. The method comprises: a first network device generating a first signal on the basis of a first sequence, wherein the first sequence is a product of a second sequence and a third sequence, the second sequence carries data, an ith element in the second sequence corresponds to an ith sub-carrier among N sub-carriers in a first frequency-domain resource, an ith element in the third sequence corresponds to the ith sub-carrier in the first frequency-domain resource, an ith element in the first sequence is carried on the ith sub-carrier in the first frequency-domain resource, the first frequency-domain resource comprises M frequency-domain sub-resources which do not overlap each other, the third sequence comprises M sub-sequences, a t-th sub-sequence among the M sub-sequences corresponds to a t-th frequency-domain sub-resource among the M frequency-domain sub-resources, and the t-th sub-sequence among the M sub-sequences meets a t-th relationship among M relationships; and sending the first signal. By means of the embodiments of the present application, the distance measurement precision of a communication-sensing fusion signal is improved.

Description

Communication method and device

[0001] This application claims priority to the Chinese patent application with application number 202311016823.9 filed with the State Intellectual Property Office of China on August 11, 2023, and priority to the Chinese patent application with the invention name “A Communication Method and Device”, all contents of which are incorporated by reference into this application. Technical Field

[0002] The present application relates to the field of communication technology, and in particular to a communication method and device. Background Art

[0003] Communication and perception integration is a key technology in next-generation wireless communication networks. It aims to integrate wireless communication and perception into a single system, leveraging the various propagation characteristics of wireless signals to enable perception functions such as target location, detection, imaging, and identification. This allows for information about the surrounding physical environment, unlocking communication capabilities, and enhancing user experience. For example, network devices perform perception by transmitting perception signals and receiving echo signals, obtaining information such as the location and velocity of targets in the environment. The echo signal is generated by the perception signal reflecting off an object in the environment. The time delay of the echo signal relative to the transmitted perception signal reflects the target's distance, while the Doppler shift of the echo signal relative to the transmitted perception signal reflects the target's velocity.

[0004] When network devices need to communicate with terminal devices and perceive targets in the environment, they need to send communication-perception fusion signals for communication and perception. However, how to design communication-perception fusion signals for both communication and perception is an urgent problem to be solved.

[0005] Summary of the Invention

[0006] The embodiments of the present application provide a communication method and apparatus that not only increase the root mean square bandwidth of a synaesthesia fusion signal, thereby improving the ranging accuracy of the synaesthesia fusion signal, but also lower the peak-to-sidelobe ratio of a range spectrum sensed using the synaesthesia fusion signal, thereby reducing the probability of false alarms in perception.

[0007] In a first aspect, an embodiment of the present application provides a communication method, which is applied to a first network device, or a chip or circuit configured in the first network device, including:

[0008] generating a first signal according to a first sequence, wherein the first sequence is a product of the second sequence and the third sequence;

[0009] The first sequence includes N first elements, the second sequence includes N second elements, the second sequence carries data, and the third sequence includes N third elements greater than or equal to 0;

[0010] The i-th element in the second sequence corresponds to the i-th subcarrier among N subcarriers in the first frequency domain resource, the i-th element in the third sequence corresponds to the i-th subcarrier in the first frequency domain resource, the i-th element in the first sequence is carried on the i-th subcarrier in the first frequency domain resource, N is an integer greater than 1, and i is an integer greater than or equal to 1 and less than or equal to N;

[0011] The first frequency domain resources include M non-overlapping sub-frequency domain resources, the third sequence includes M sub-sequences, a t-th sub-sequence in the M sub-sequences corresponds to a t-th sub-frequency domain resource in the M sub-frequency domain resources, the t-th sub-sequence in the M sub-sequences satisfies a t-th relationship among M relationships, M is an integer greater than or equal to 2 and less than or equal to N, and t is an integer greater than or equal to 1 and less than or equal to M;

[0012] The first signal is sent.

[0013] The first signal is a synaesthesia fusion signal. The synaesthesia fusion signal is generated by multiplying the second sequence carrying data by a segmented third sequence. By designing different third sequences, the generated synaesthesia fusion signal can have different properties to meet different perception and communication requirements. For example, when the third sequence is a concave sequence, the root mean square bandwidth of the synaesthesia fusion signal can be increased, thereby improving the ranging accuracy of the synaesthesia fusion signal. When the third sequence includes a convex subsequence, the peak-to-sidelobe ratio of the distance spectrum perceived using the synaesthesia fusion signal is lower, thereby reducing the probability of false alarms.

[0014] In one possible design, the i-th element in the third sequence is equal to the N-i+1-th element in the third sequence, that is, the third sequence can be a symmetric sequence.

[0015] In another possible design, the values ​​of the elements of at least one subsequence in the M subsequences are all the same, so that the values ​​of the elements in at least one subsequence in the third sequence are constant.

[0016] In another possible design, M is equal to 3, a starting frequency of a t1-th sub-frequency domain resource among the M sub-frequency domain resources is less than a starting frequency of a t2-th sub-frequency domain resource among the M sub-frequency domain resources, t1 is an integer greater than or equal to 1 and less than M, t2 is an integer greater than 1 and less than or equal to M, and t1 is less than t2.

[0017] The first subsequence among the M subsequences satisfies the first relationship among the M relationships, and the first relationship is: the values ​​of the elements in the first subsequence are all first values;

[0018] The second subsequence among the M subsequences satisfies the second relationship among the M relationships, and the second relationship is:

[0019] The values ​​of the elements in the second subsequence are all the second value, or the values ​​of the elements in the second subsequence satisfy the polynomial function of the square of (k-(N-1) / 2), or the values ​​of the elements in the second subsequence satisfy Functional relationship, where k is the sequence number of the element in the second subsequence in the third sequence, μ is less than 0, v is greater than 0, and s is greater than 0;

[0020] The third subsequence among the M subsequences satisfies the third relationship among the M relationships, wherein the third relationship is that the values ​​of the elements in the third subsequence are all third values;

[0021] The first value and the third value are both greater than the second value.

[0022] In this design, the third sequence is a concave sequence. By generating the synaesthesia fusion signal through the third sequence, the root mean square bandwidth of the synaesthesia fusion signal can be increased, thereby improving the ranging accuracy of the synaesthesia fusion signal.

[0023] In another possible design, the number of subcarriers included in the first subfrequency domain resource divided by the number N of all subcarriers included in the first frequency domain resource is less than 0.25, or the number of subcarriers included in the third subfrequency domain resource divided by the number N of all subcarriers included in the first frequency domain resource is less than 0.25, or the sum of the numbers of subcarriers included in the first subfrequency domain resource and the third subfrequency domain resource divided by the number N of all subcarriers included in the first frequency domain resource is less than 0.5.

[0024] In another possible design, the first value is equal to the third value.

[0025] In another possible design, the number of subcarriers included in the first sub-frequency domain resources is equal to the number of subcarriers included in the third sub-frequency domain resources.

[0026] In another possible design, M is equal to 5, a starting frequency of a t1-th sub-frequency domain resource among the M sub-frequency domain resources is less than a starting frequency of a t2-th sub-frequency domain resource among the M sub-frequency domain resources, t1 is an integer greater than or equal to 1 and less than M, t2 is an integer greater than 1 and less than or equal to M, and t1 is less than t2.

[0027] The first subsequence among the M subsequences satisfies the first relationship among the M relationships, and the first relationship is: the values ​​of the elements in the first subsequence are all first values;

[0028] The second subsequence among the M subsequences satisfies the second relationship among the M relationships, and the second relationship is: the values ​​of the elements in the second subsequence are all 1;

[0029] The third subsequence among the M subsequences satisfies the third relationship among the M relationships, and the third relationship is:

[0030] The values ​​of the elements in the third subsequence are all the second value, or the values ​​of the elements in the third subsequence satisfy the polynomial function of the square of (k-(N-1) / 2), or the values ​​of the elements in the third subsequence satisfy Functional relationship, where k is the sequence number of the element in the third subsequence in the third sequence, μ is less than 0, v is greater than 0, and s is greater than 0;

[0031] The fourth subsequence among the M subsequences satisfies the fourth relationship among the M relationships, and the fourth relationship is: the values ​​of the elements in the fourth subsequence are all 1;

[0032] The fifth subsequence among the M subsequences satisfies the fifth relationship among the M relationships, and the fifth relationship is: the values ​​of the elements in the fifth subsequence are all the third value;

[0033] The first value and the third value are both greater than 1, and the second value is greater than 0 and less than or equal to 1.

[0034] In this design, the third sequence is a concave sequence. By generating the synaesthesia fusion signal through the third sequence, the root mean square bandwidth of the synaesthesia fusion signal can be increased, thereby improving the ranging accuracy of the synaesthesia fusion signal.

[0035] In another possible design, the number of subcarriers included in the first subfrequency domain resource is equal to the number of subcarriers included in the fifth subfrequency domain resource, and / or the number of subcarriers included in the second subfrequency domain resource is equal to the number of subcarriers included in the fourth subfrequency domain resource.

[0036] In another possible design, the first value is equal to the third value.

[0037] In another possible design, the kth element in the third sequence is less than or equal to the maximum of the k1th element in the third sequence and the k2th element in the third sequence, k, k1, and k2 are all integers greater than or equal to 1 and less than or equal to N, k2 is greater than k1, and k is greater than or equal to k1 and less than or equal to k2. In this design, the third sequence is a concave sequence. Generating a synaesthesia fusion signal using the third sequence can increase the root mean square bandwidth of the synaesthesia fusion signal, thereby improving the ranging accuracy of the synaesthesia fusion signal.

[0038] In another possible design, the first subsequence among the M subsequences satisfies the first of the M relations, where the first relation is: the k1th element in the first subsequence is greater than or equal to the k2th element in the first subsequence. The second subsequence among the M subsequences satisfies the second of the M relations, where the second relation is: the kth element in the second subsequence is greater than or equal to the minimum of the k1th element in the second subsequence and the k2th element in the second subsequence. The third subsequence among the M subsequences satisfies the third of the M relations, where the k1th element in the third subsequence is less than or equal to the k2th element in the third subsequence. The k, k1, and k2 are all integers greater than or equal to 1 and less than or equal to N, the k2 is greater than the k1, and the k is greater than or equal to the k1 and less than or equal to k2. It can be seen that the first subsequence is a monotonically decreasing sequence, the second subsequence is a convex sequence, and the third subsequence is a monotonically increasing sequence.

[0039] In this design, the third sequence includes a convex subsequence, and a synaesthesia fusion signal is generated by the third sequence. The peak sidelobe ratio of the distance spectrum perceived by using the synaesthesia fusion signal is lower, thereby reducing the false alarm probability of perception.

[0040] In another possible design, the sum of the squares of all elements in the third sequence is equal to N.

[0041] In another possible design, the first signal is used for sensing, or the first signal is used for sensing and channel measurement, or the first signal is used for sensing and channel estimation, or the first signal is used for sensing and data transmission. Perception and communication are achieved through the first signal.

[0042] In another possible design, an echo signal of the first signal is received. The first network device transmits the first signal and receives an echo signal of the first signal, and perceives information such as the position and speed of the target based on the echo signal. The echo signal is generated by reflection of the first signal from an object in the environment.

[0043] In another possible design, first information is sent to the second network device and / or the terminal device, where the first information is used to indicate parameter information of the third sequence, and the parameter information includes multiple sets of parameters for determining the third sequence. The parameters can be used to determine multiple relationships. By sending the first information, the second network device and / or the terminal device can determine the third sequence. The terminal device can obtain the communication data or communication reference signal sequence carried by the second sequence based on the third sequence, thereby enabling communication between the first network device and the terminal device. Furthermore, when the first network device and the second network device already know the second sequence, different third sequences can be used to multiply the second sequence to obtain the first sequence, and different first signals can be generated through different first sequences for perception, thereby adapting to different perception performance requirements and enabling communication between the first network device and the first terminal device.

[0044] In a second aspect, an embodiment of the present application provides a communication method, which is applied to a second network device, or a chip or circuit configured in the second network device, including:

[0045] receiving an echo signal of a first signal, where the first signal is generated according to a first sequence, where the first sequence is a product of a second sequence and a third sequence;

[0046] The first sequence includes N first elements, the second sequence includes N second elements, the second sequence carries data, and the third sequence includes N third elements greater than or equal to 0.

[0047] The i-th element in the second sequence corresponds to the i-th subcarrier among N subcarriers in the first frequency domain resource, the i-th element in the third sequence corresponds to the i-th subcarrier in the first frequency domain resource, the i-th element in the first sequence is carried on the i-th subcarrier in the first frequency domain resource, N is an integer greater than 1, and i is an integer greater than or equal to 1 and less than or equal to N;

[0048] The first frequency domain resources include M non-overlapping sub-frequency domain resources, the third sequence includes M subsequences, the t-th subsequence in the M subsequences corresponds to the t-th sub-frequency domain resource in the M sub-frequency domain resources, the t-th subsequence in the M subsequences satisfies the t-th relationship among the M relationships, M is an integer greater than or equal to 2 and less than or equal to N, and t is an integer greater than or equal to 1 and less than or equal to M.

[0049] The first signal is a synaesthesia fusion signal. The synaesthesia fusion signal is generated by multiplying the second sequence carrying data by a segmented third sequence. Using different third sequences can create different properties for the generated synaesthesia fusion signal to meet different perception and communication requirements. For example, when the third sequence is a concave subsequence, the root mean square bandwidth of the synaesthesia fusion signal can be increased, thereby improving the ranging accuracy of the synaesthesia fusion signal. When the third sequence includes a convex subsequence, the peak-to-sidelobe ratio of the distance spectrum perceived using the synaesthesia fusion signal is lower, thereby reducing the probability of false alarms.

[0050] In one possible design, the i-th element in the third sequence is equal to the N-i+1-th element in the third sequence, that is, the third sequence is a symmetric sequence.

[0051] In another possible design, the values ​​of the elements of at least one subsequence in the M subsequences are all the same, so that the values ​​of the elements in at least one subsequence in the third sequence are constant.

[0052] In another possible design, M is equal to 3, a starting frequency of a t1-th sub-frequency domain resource among the M sub-frequency domain resources is less than a starting frequency of a t2-th sub-frequency domain resource among the M sub-frequency domain resources, t1 is an integer greater than or equal to 1 and less than M, t2 is an integer greater than 1 and less than or equal to M, and t1 is less than t2.

[0053] The first subsequence among the M subsequences satisfies the first relationship among the M relationships, and the first relationship is: the values ​​of the elements in the first subsequence are all first values;

[0054] The second subsequence among the M subsequences satisfies the second relationship among the M relationships, and the second relationship is:

[0055] The values ​​of the elements in the second subsequence are all the second value, or the values ​​of the elements in the second subsequence satisfy the polynomial function of the square of (k-(N-1) / 2), or the values ​​of the elements in the second subsequence satisfy Functional relationship, where k is the sequence number of the element in the second subsequence in the third sequence, μ is less than 0, v is greater than 0, and s is greater than 0;

[0056] The third subsequence among the M subsequences satisfies the third relationship among the M relationships, wherein the third relationship is that the values ​​of the elements in the third subsequence are all third values;

[0057] The first value and the third value are both greater than the second value.

[0058] In this design, the third sequence is a concave sequence. By generating the synaesthesia fusion signal through the third sequence, the root mean square bandwidth of the synaesthesia fusion signal can be increased, thereby improving the ranging accuracy of the synaesthesia fusion signal.

[0059] In another possible design, the number of subcarriers included in the first subfrequency domain resource divided by the number N of all subcarriers included in the first frequency domain resource is less than 0.25, or the number of subcarriers included in the third subfrequency domain resource divided by the number N of all subcarriers included in the first frequency domain resource is less than 0.25, or the sum of the numbers of subcarriers included in the first subfrequency domain resource and the third subfrequency domain resource divided by the number N of all subcarriers included in the first frequency domain resource is less than 0.5.

[0060] In another possible design, the first value is equal to the third value.

[0061] In another possible design, the number of subcarriers included in the first sub-frequency domain resources is equal to the number of subcarriers included in the third sub-frequency domain resources.

[0062] In another possible design, M is equal to 5, a starting frequency of a t1-th sub-frequency domain resource among the M sub-frequency domain resources is less than a starting frequency of a t2-th sub-frequency domain resource among the M sub-frequency domain resources, t1 is an integer greater than or equal to 1 and less than M, t2 is an integer greater than 1 and less than or equal to M, and t1 is less than t2.

[0063] The first subsequence among the M subsequences satisfies the first relationship among the M relationships, and the first relationship is: the values ​​of the elements in the first subsequence are all first values;

[0064] The second subsequence among the M subsequences satisfies the second relationship among the M relationships, and the second relationship is: the values ​​of the elements in the second subsequence are all 1;

[0065] The third subsequence among the M subsequences satisfies the third relationship among the M relationships, and the third relationship is:

[0066] The values ​​of the elements in the third subsequence are all the second value, or the values ​​of the elements in the third subsequence satisfy the polynomial function of the square of (k-(N-1) / 2), or the values ​​of the elements in the third subsequence satisfy Functional relationship, where k is the sequence number of the element in the third subsequence in the third sequence, μ is less than 0, v is greater than 0, and s is greater than 0;

[0067] The fourth subsequence among the M subsequences satisfies the fourth relationship among the M relationships, and the fourth relationship is: the values ​​of the elements in the fourth subsequence are all 1;

[0068] The fifth subsequence among the M subsequences satisfies the fifth relationship among the M relationships, and the fifth relationship is: the values ​​of the elements in the fifth subsequence are all the third value;

[0069] The first value and the third value are both greater than 1, and the second value is greater than 0 and less than or equal to 1.

[0070] In this design, the third sequence is a concave sequence. By generating the synaesthesia fusion signal through the third sequence, the root mean square bandwidth of the synaesthesia fusion signal can be increased, thereby improving the ranging accuracy of the synaesthesia fusion signal.

[0071] In another possible design, the number of subcarriers included in the first sub-frequency domain resources is equal to the number of subcarriers included in the fifth sub-frequency domain resources, and / or the number of subcarriers included in the second sub-frequency domain resources is equal to the number of subcarriers included in the fourth sub-frequency domain resources.

[0072] In another possible design, the first value is equal to the third value.

[0073] In another possible design, the kth element in the third sequence is less than or equal to the maximum of the k1th element in the third sequence and the k2th element in the third sequence, k, k1, and k2 are all integers greater than or equal to 1 and less than or equal to N, k2 is greater than k1, and k is greater than or equal to k1 and less than or equal to k2. In this design, the third sequence is a concave sequence. Generating a synaesthesia fusion signal using the third sequence can increase the root mean square bandwidth of the synaesthesia fusion signal, thereby improving the ranging accuracy of the synaesthesia fusion signal.

[0074] In another possible design, the first subsequence among the M subsequences satisfies the first of the M relations, where the first relation is: the k1th element in the first subsequence is greater than or equal to the k2th element in the first subsequence. The second subsequence among the M subsequences satisfies the second of the M relations, where the second relation is: the kth element in the second subsequence is greater than or equal to the minimum of the k1th element in the second subsequence and the k2th element in the second subsequence. The third subsequence among the M subsequences satisfies the third of the M relations, where the k1th element in the third subsequence is less than or equal to the k2th element in the third subsequence. The k, k1, and k2 are all integers greater than or equal to 1 and less than or equal to N, the k2 is greater than the k1, and the k is greater than or equal to the k1 and less than or equal to k2. It can be seen that the first subsequence is a monotonically decreasing sequence, the second subsequence is a convex sequence, and the third subsequence is a monotonically increasing sequence.

[0075] In this design, the third sequence includes a convex subsequence, and a synaesthesia fusion signal is generated by the third sequence. The peak sidelobe ratio of the distance spectrum perceived by using the synaesthesia fusion signal is lower, thereby reducing the false alarm probability of perception.

[0076] In another possible design, the sum of the squares of all elements in the third sequence is equal to N.

[0077] In another possible design, a first network device receives first information sent from the first network device. The first information indicates parameter information of the third sequence, including multiple sets of parameters used to determine the third sequence. These parameters can be used to determine multiple relationships. A second network device determines the third sequence based on the first information. The first signal is processed based on the third sequence to obtain a second sequence. Different first sequences are obtained by multiplying the third sequence by the second sequence. The first signals are generated using the different first sequences for perception, thereby adapting to different perception performance requirements.

[0078] In another possible design, the first signal is used for sensing, or the first signal is used for sensing and channel measurement, or the first signal is used for sensing and channel estimation, or the first signal is used for sensing and data transmission. Perception and communication are achieved through the first signal.

[0079] In a third aspect, an embodiment of the present application provides a communication method, which is applied to a first terminal device, or a chip or circuit configured in the first terminal device, including:

[0080] receiving a first signal, where the first signal is generated according to a first sequence, where the first sequence is a product of a second sequence and a third sequence;

[0081] The first sequence includes N first elements, the second sequence includes N second elements, the second sequence carries data, and the third sequence includes N third elements greater than or equal to 0.

[0082] The i-th element in the second sequence corresponds to the i-th subcarrier among N subcarriers in the first frequency domain resource, the i-th element in the third sequence corresponds to the i-th subcarrier in the first frequency domain resource, the i-th element in the first sequence is carried on the i-th subcarrier in the first frequency domain resource, N is an integer greater than 1, and i is an integer greater than or equal to 1 and less than or equal to N;

[0083] The first frequency domain resources include M non-overlapping sub-frequency domain resources, the third sequence includes M subsequences, the t-th subsequence in the M subsequences corresponds to the t-th sub-frequency domain resource in the M sub-frequency domain resources, the t-th subsequence in the M subsequences satisfies the t-th relationship among the M relationships, M is an integer greater than or equal to 2 and less than or equal to N, and t is an integer greater than or equal to 1 and less than or equal to M.

[0084] The first signal is a synaesthesia fusion signal. The synaesthesia fusion signal is generated by multiplying the second sequence carrying data by a segmented third sequence. By designing different third sequences, the generated synaesthesia fusion signal can have different properties to meet different perception and communication requirements. For example, when the third sequence is a concave sequence, the root mean square bandwidth of the synaesthesia fusion signal can be increased, thereby improving the ranging accuracy of the synaesthesia fusion signal. When the third sequence includes a convex subsequence, the peak-to-sidelobe ratio of the distance spectrum perceived using the synaesthesia fusion signal is lower, thereby reducing the probability of false alarms.

[0085] In one possible design, the i-th element in the third sequence is equal to the N-i+1-th element in the third sequence, that is, the third sequence is a symmetric sequence.

[0086] In another possible design, the values ​​of the elements of at least one subsequence in the M subsequences are all the same, so that the values ​​of the elements in at least one subsequence in the third sequence are constant.

[0087] In another possible design, M is equal to 3, a starting frequency of a t1-th sub-frequency domain resource among the M sub-frequency domain resources is less than a starting frequency of a t2-th sub-frequency domain resource among the M sub-frequency domain resources, t1 is an integer greater than or equal to 1 and less than M, t2 is an integer greater than 1 and less than or equal to M, and t1 is less than t2.

[0088] The first subsequence among the M subsequences satisfies the first relationship among the M relationships, and the first relationship is: the values ​​of the elements in the first subsequence are all first values;

[0089] The second subsequence among the M subsequences satisfies the second relationship among the M relationships, and the second relationship is:

[0090] The values ​​of the elements in the second subsequence are all the second value, or the values ​​of the elements in the second subsequence satisfy the polynomial function of the square of (k-(N-1) / 2), or the values ​​of the elements in the second subsequence satisfy Functional relationship, where k is the sequence number of the element in the second subsequence in the third sequence, μ is less than 0, v is greater than 0, and s is greater than 0;

[0091] The third subsequence among the M subsequences satisfies the third relationship among the M relationships, wherein the third relationship is that the values ​​of the elements in the third subsequence are all third values;

[0092] The first value and the third value are both greater than the second value.

[0093] In this design, the third sequence is a concave sequence. By generating the synaesthesia fusion signal through the third sequence, the root mean square bandwidth of the synaesthesia fusion signal can be increased, thereby improving the ranging accuracy of the synaesthesia fusion signal.

[0094] In another possible design, the number of subcarriers included in the first subfrequency domain resource divided by the number N of all subcarriers included in the first frequency domain resource is less than 0.25, or the number of subcarriers included in the third subfrequency domain resource divided by the number N of all subcarriers included in the first frequency domain resource is less than 0.25, or the sum of the numbers of subcarriers included in the first subfrequency domain resource and the third subfrequency domain resource divided by the number N of all subcarriers included in the first frequency domain resource is less than 0.5.

[0095] In another possible design, the first value is equal to the third value.

[0096] In another possible design, the number of subcarriers included in the first sub-frequency domain resources is equal to the number of subcarriers included in the third sub-frequency domain resources.

[0097] In another possible design, M is equal to 5, a starting frequency of a t1-th sub-frequency domain resource among the M sub-frequency domain resources is less than a starting frequency of a t2-th sub-frequency domain resource among the M sub-frequency domain resources, t1 is an integer greater than or equal to 1 and less than M, t2 is an integer greater than 1 and less than or equal to M, and t1 is less than t2.

[0098] The first subsequence among the M subsequences satisfies the first relationship among the M relationships, and the first relationship is: the values ​​of the elements in the first subsequence are all first values;

[0099] The second subsequence among the M subsequences satisfies the second relationship among the M relationships, and the second relationship is: the values ​​of the elements in the second subsequence are all 1;

[0100] The third subsequence among the M subsequences satisfies the third relationship among the M relationships, and the third relationship is:

[0101] The values ​​of the elements in the third subsequence are all the second value, or the values ​​of the elements in the third subsequence satisfy the polynomial function of the square of (k-(N-1) / 2), or the values ​​of the elements in the third subsequence satisfy Functional relationship, where k is the sequence number of the element in the third subsequence in the third sequence, μ is less than 0, v is greater than 0, and s is greater than 0;

[0102] The fourth subsequence among the M subsequences satisfies the fourth relationship among the M relationships, and the fourth relationship is: the values ​​of the elements in the fourth subsequence are all 1;

[0103] The fifth subsequence among the M subsequences satisfies the fifth relationship among the M relationships, and the fifth relationship is: the values ​​of the elements in the fifth subsequence are all the third value;

[0104] The first value and the third value are both greater than 1, and the second value is greater than 0 and less than or equal to 1.

[0105] In this design, when the third sequence is a concave sequence, generating the synaesthesia fusion signal through the third sequence can increase the root mean square bandwidth of the synaesthesia fusion signal, thereby improving the ranging accuracy of the synaesthesia fusion signal.

[0106] In another possible design, the number of subcarriers included in the first sub-frequency domain resources is equal to the number of subcarriers included in the fifth sub-frequency domain resources, and / or the number of subcarriers included in the second sub-frequency domain resources is equal to the number of subcarriers included in the fourth sub-frequency domain resources.

[0107] In another possible design, the first value is equal to the third value.

[0108] In another possible design, the kth element in the third sequence is less than or equal to the maximum of the k1th element in the third sequence and the k2th element in the third sequence, k, k1, and k2 are all integers greater than or equal to 1 and less than or equal to N, k2 is greater than k1, and k is greater than or equal to k1 and less than or equal to k2. In this design, the third sequence is a concave sequence. Generating a synaesthesia fusion signal using the third sequence can increase the root mean square bandwidth of the synaesthesia fusion signal, thereby improving the ranging accuracy of the synaesthesia fusion signal.

[0109] In another possible design, the first subsequence among the M subsequences satisfies the first of the M relations, where the first relation is: the k1th element in the first subsequence is greater than or equal to the k2th element in the first subsequence. The second subsequence among the M subsequences satisfies the second of the M relations, where the second relation is: the kth element in the second subsequence is greater than or equal to the minimum of the k1th element in the second subsequence and the k2th element in the second subsequence. The third subsequence among the M subsequences satisfies the third of the M relations, where the k1th element in the third subsequence is less than or equal to the k2th element in the third subsequence. The k, k1, and k2 are all integers greater than or equal to 1 and less than or equal to N, the k2 is greater than the k1, and the k is greater than or equal to the k1 and less than or equal to k2. It can be seen that the first subsequence is a monotonically decreasing sequence, the second subsequence is a convex sequence, and the third subsequence is a monotonically increasing sequence.

[0110] In this design, the third sequence includes a convex subsequence, and a synaesthesia fusion signal is generated by the third sequence. The peak sidelobe ratio of the distance spectrum perceived by using the synaesthesia fusion signal is lower, thereby reducing the false alarm probability of perception.

[0111] In another possible design, the sum of the squares of all elements in the third sequence is equal to N.

[0112] In another possible design, a first terminal device receives first information sent by a first network device. The first information indicates parameter information of the third sequence, including multiple sets of parameters used to determine the third sequence. The parameters can be used to determine multiple relationships. Based on the first information, the second sequence is obtained from the first signal. The third sequence is determined using the parameter information of the third sequence, and the first signal is demodulated to obtain the second sequence, thereby obtaining communication data or a communication reference sequence carried by the second sequence, thereby enabling communication between the first network device and the first terminal device.

[0113] In another possible design, the first signal is used for sensing, or the first signal is used for sensing and channel measurement, or the first signal is used for sensing and channel estimation, or the first signal is used for sensing and data transmission. Perception and communication are achieved through the first signal.

[0114] In a fourth aspect, an embodiment of the present application provides a communication method, which is applied to a second terminal device, or a chip or circuit configured in the second terminal device, including:

[0115] receiving an echo signal of a first signal, where the first signal is generated according to a first sequence, where the first sequence is a product of a second sequence and a third sequence;

[0116] The first sequence includes N first elements, the second sequence includes N second elements, the second sequence carries data, and the third sequence includes N third elements greater than or equal to 0.

[0117] The i-th element in the second sequence corresponds to the i-th subcarrier among N subcarriers in the first frequency domain resource, the i-th element in the third sequence corresponds to the i-th subcarrier in the first frequency domain resource, the i-th element in the first sequence is carried on the i-th subcarrier in the first frequency domain resource, N is an integer greater than 1, and i is an integer greater than or equal to 1 and less than or equal to N;

[0118] The first frequency domain resources include M non-overlapping sub-frequency domain resources, the third sequence includes M subsequences, the t-th subsequence in the M subsequences corresponds to the t-th sub-frequency domain resource in the M sub-frequency domain resources, the t-th subsequence in the M subsequences satisfies the t-th relationship among the M relationships, M is an integer greater than or equal to 2 and less than or equal to N, and t is an integer greater than or equal to 1 and less than or equal to M.

[0119] The first signal is a synaesthesia fusion signal. The synaesthesia fusion signal is generated by multiplying the second sequence carrying data by a segmented third sequence. By designing different third sequences, the generated synaesthesia fusion signal can have different properties to meet different perception and communication requirements. For example, when the third sequence is a concave sequence, the root mean square bandwidth of the synaesthesia fusion signal can be increased, thereby improving the ranging accuracy of the synaesthesia fusion signal. When the third sequence includes a convex subsequence, the peak-to-sidelobe ratio of the distance spectrum perceived using the synaesthesia fusion signal is lower, thereby reducing the probability of false alarms.

[0120] In one possible design, the i-th element in the third sequence is equal to the N-i+1-th element in the third sequence, that is, the third sequence can be a symmetric sequence.

[0121] In another possible design, the values ​​of the elements of at least one subsequence in the M subsequences are all the same, so that the values ​​of the elements in at least one subsequence in the third sequence are constant.

[0122] In another possible design, M is equal to 3, a starting frequency of a t1-th sub-frequency domain resource among the M sub-frequency domain resources is less than a starting frequency of a t2-th sub-frequency domain resource among the M sub-frequency domain resources, t1 is an integer greater than or equal to 1 and less than M, t2 is an integer greater than 1 and less than or equal to M, and t1 is less than t2.

[0123] The first subsequence among the M subsequences satisfies the first relationship among the M relationships, and the first relationship is: the values ​​of the elements in the first subsequence are all first values;

[0124] The second subsequence among the M subsequences satisfies the second relationship among the M relationships, and the second relationship is:

[0125] The values ​​of the elements in the second subsequence are all the second value, or the values ​​of the elements in the second subsequence satisfy the polynomial function of the square of (k-(N-1) / 2), or the values ​​of the elements in the second subsequence satisfy Functional relationship, where k is the sequence number of the element in the second subsequence in the third sequence, μ is less than 0, v is greater than 0, and s is greater than 0;

[0126] The third subsequence among the M subsequences satisfies the third relationship among the M relationships, wherein the third relationship is that the values ​​of the elements in the third subsequence are all third values;

[0127] The first value and the third value are both greater than the second value.

[0128] In this design, the third sequence is a concave sequence. By generating the synaesthesia fusion signal through the third sequence, the root mean square bandwidth of the synaesthesia fusion signal can be increased, thereby improving the ranging accuracy of the synaesthesia fusion signal.

[0129] In another possible design, the number of subcarriers included in the first subfrequency domain resource divided by the number N of all subcarriers included in the first frequency domain resource is less than 0.25, or the number of subcarriers included in the third subfrequency domain resource divided by the number N of all subcarriers included in the first frequency domain resource is less than 0.25, or the sum of the numbers of subcarriers included in the first subfrequency domain resource and the third subfrequency domain resource divided by the number N of all subcarriers included in the first frequency domain resource is less than 0.5.

[0130] In another possible design, the first value is equal to the third value.

[0131] In another possible design, the number of subcarriers included in the first sub-frequency domain resources is equal to the number of subcarriers included in the third sub-frequency domain resources.

[0132] In another possible design, M is equal to 5, a starting frequency of a t1-th sub-frequency domain resource among the M sub-frequency domain resources is less than a starting frequency of a t2-th sub-frequency domain resource among the M sub-frequency domain resources, t1 is an integer greater than or equal to 1 and less than M, t2 is an integer greater than 1 and less than or equal to M, and t1 is less than t2.

[0133] The first subsequence among the M subsequences satisfies the first relationship among the M relationships, and the first relationship is: the values ​​of the elements in the first subsequence are all first values;

[0134] The second subsequence among the M subsequences satisfies the second relationship among the M relationships, and the second relationship is: the values ​​of the elements in the second subsequence are all 1;

[0135] The third subsequence among the M subsequences satisfies the third relationship among the M relationships, and the third relationship is:

[0136] The values ​​of the elements in the third subsequence are all the second value, or the values ​​of the elements in the third subsequence satisfy the polynomial function of the square of (k-(N-1) / 2), or the values ​​of the elements in the third subsequence satisfy Functional relationship, where k is the sequence number of the element in the third subsequence in the third sequence, μ is less than 0, v is greater than 0, and s is greater than 0;

[0137] The fourth subsequence among the M subsequences satisfies the fourth relationship among the M relationships, and the fourth relationship is: the values ​​of the elements in the fourth subsequence are all 1;

[0138] The fifth subsequence among the M subsequences satisfies the fifth relationship among the M relationships, and the fifth relationship is: the values ​​of the elements in the fifth subsequence are all the third value;

[0139] The first value and the third value are both greater than 1, and the second value is greater than 0 and less than or equal to 1.

[0140] In this design, the third sequence is a concave sequence. By generating the synaesthesia fusion signal through the third sequence, the root mean square bandwidth of the synaesthesia fusion signal can be increased, thereby improving the ranging accuracy of the synaesthesia fusion signal.

[0141] In another possible design, the number of subcarriers included in the first sub-frequency domain resources is equal to the number of subcarriers included in the fifth sub-frequency domain resources, and / or the number of subcarriers included in the second sub-frequency domain resources is equal to the number of subcarriers included in the fourth sub-frequency domain resources.

[0142] In another possible design, the first value is equal to the third value.

[0143] In another possible design, the kth element in the third sequence is less than or equal to the maximum of the k1th element in the third sequence and the k2th element in the third sequence, k, k1, and k2 are all integers greater than or equal to 1 and less than or equal to N, k2 is greater than k1, and k is greater than or equal to k1 and less than or equal to k2. In this design, the third sequence is a concave sequence. Generating a synaesthesia fusion signal using the third sequence can increase the root mean square bandwidth of the synaesthesia fusion signal, thereby improving the ranging accuracy of the synaesthesia fusion signal.

[0144] In another possible design, the first subsequence among the M subsequences satisfies the first of the M relations, where the first relation is: the k1th element in the first subsequence is greater than or equal to the k2th element in the first subsequence. The second subsequence among the M subsequences satisfies the second of the M relations, where the second relation is: the kth element in the second subsequence is greater than or equal to the minimum of the k1th element in the second subsequence and the k2th element in the second subsequence. The third subsequence among the M subsequences satisfies the third of the M relations, where the k1th element in the third subsequence is less than or equal to the k2th element in the third subsequence. The k, k1, and k2 are all integers greater than or equal to 1 and less than or equal to N, the k2 is greater than the k1, and the k is greater than or equal to the k1 and less than or equal to k2. It can be seen that the first subsequence is a monotonically decreasing sequence, the second subsequence is a convex sequence, and the third subsequence is a monotonically increasing sequence.

[0145] In this design, the third sequence includes a convex subsequence, and a synaesthesia fusion signal is generated by the third sequence. The peak sidelobe ratio of the distance spectrum perceived by using the synaesthesia fusion signal is lower, thereby reducing the false alarm probability of perception.

[0146] In another possible design, the sum of the squares of all elements in the third sequence is equal to N.

[0147] In another possible design, a first network device receives first information sent by a first network device. The first information indicates parameter information of the third sequence, and the parameter information includes multiple sets of parameters used to determine the third sequence. The parameters can be used to determine multiple relationships. A second terminal device determines the third sequence based on the first information. The first signal is processed based on the third sequence to obtain a second sequence. Different first sequences are obtained by multiplying the third sequence by the second sequence. The first signals are generated using the different first sequences for perception, thereby adapting to different perception performance requirements.

[0148] In another possible design, the first signal is used for sensing, or the first signal is used for sensing and channel measurement, or the first signal is used for sensing and channel estimation, or the first signal is used for sensing and data transmission. Perception and communication are achieved through the first signal.

[0149] In a fifth aspect, an embodiment of the present application provides a communication device, which is a first network device, or a unit or module in the first network device, including:

[0150] a processing module, configured to generate a first signal according to a first sequence, where the first sequence is a product of the second sequence and the third sequence;

[0151] The first sequence includes N first elements, the second sequence includes N second elements, the second sequence carries data, and the third sequence includes N third elements greater than or equal to 0;

[0152] The i-th element in the second sequence corresponds to the i-th subcarrier among N subcarriers in the first frequency domain resource, the i-th element in the third sequence corresponds to the i-th subcarrier in the first frequency domain resource, the i-th element in the first sequence is carried on the i-th subcarrier in the first frequency domain resource, N is an integer greater than 1, and i is an integer greater than or equal to 1 and less than or equal to N;

[0153] The first frequency domain resources include M non-overlapping sub-frequency domain resources, the third sequence includes M sub-sequences, a t-th sub-sequence in the M sub-sequences corresponds to a t-th sub-frequency domain resource in the M sub-frequency domain resources, the t-th sub-sequence in the M sub-sequences satisfies a t-th relationship among M relationships, M is an integer greater than or equal to 2 and less than or equal to N, and t is an integer greater than or equal to 1 and less than or equal to M;

[0154] A sending module is used to send the first signal.

[0155] In another possible design, the i-th element in the third sequence is equal to the N-i+1-th element in the third sequence.

[0156] In another possible design, the values ​​of elements of at least one subsequence in the M subsequences are all the same.

[0157] In another possible design, M is equal to 3, a starting frequency of a t1-th sub-frequency domain resource among the M sub-frequency domain resources is less than a starting frequency of a t2-th sub-frequency domain resource among the M sub-frequency domain resources, t1 is an integer greater than or equal to 1 and less than M, t2 is an integer greater than 1 and less than or equal to M, and t1 is less than t2.

[0158] The first subsequence among the M subsequences satisfies the first relationship among the M relationships, and the first relationship is: the values ​​of the elements in the first subsequence are all first values;

[0159] The second subsequence among the M subsequences satisfies the second relationship among the M relationships, and the second relationship is:

[0160] The values ​​of the elements in the second subsequence are all the second value, or the values ​​of the elements in the second subsequence satisfy the polynomial function of the square of (k-(N-1) / 2), or the values ​​of the elements in the second subsequence satisfy Functional relationship, where k is the sequence number of the element in the second subsequence in the third sequence, μ is less than 0, v is greater than 0, and s is greater than 0;

[0161] The third subsequence among the M subsequences satisfies the third relationship among the M relationships, wherein the third relationship is that the values ​​of the elements in the third subsequence are all third values;

[0162] The first value and the third value are both greater than the second value.

[0163] In another possible design, M is equal to 5, a starting frequency of a t1-th sub-frequency domain resource among the M sub-frequency domain resources is less than a starting frequency of a t2-th sub-frequency domain resource among the M sub-frequency domain resources, t1 is an integer greater than or equal to 1 and less than M, t2 is an integer greater than 1 and less than or equal to M, and t1 is less than t2.

[0164] The first subsequence among the M subsequences satisfies the first relationship among the M relationships, and the first relationship is: the values ​​of the elements in the first subsequence are all first values;

[0165] The second subsequence among the M subsequences satisfies the second relationship among the M relationships, and the second relationship is: the values ​​of the elements in the second subsequence are all 1;

[0166] The third subsequence among the M subsequences satisfies the third relationship among the M relationships, and the third relationship is:

[0167] The values ​​of the elements in the third subsequence are all the second value, or the values ​​of the elements in the third subsequence satisfy the polynomial function of the square of (k-(N-1) / 2), or the values ​​of the elements in the third subsequence satisfy Functional relationship, where k is the sequence number of the element in the third subsequence in the third sequence, μ is less than 0, v is greater than 0, and s is greater than 0;

[0168] The fourth subsequence among the M subsequences satisfies the fourth relationship among the M relationships, and the fourth relationship is: the values ​​of the elements in the fourth subsequence are all 1;

[0169] The fifth subsequence among the M subsequences satisfies the fifth relationship among the M relationships, and the fifth relationship is: the values ​​of the elements in the fifth subsequence are all the third value;

[0170] The first value and the third value are both greater than 1, and the second value is greater than 0 and less than or equal to 1.

[0171] In another possible design, the sending module is also used to send first information to a second network device and / or terminal device, where the first information indicates parameter information of the third sequence, and the parameter information includes at least one of the following: the first value, the second value, the third value, the μ, the v, the s, and the M.

[0172] In another possible design, the first signal is used for sensing, or the first signal is used for sensing and channel measurement, or the first signal is used for sensing and channel estimation, or the first signal is used for sensing and data transmission.

[0173] In another possible design, the device further includes: a receiving module, configured to receive an echo signal of the first signal.

[0174] The operations and beneficial effects performed by the communication device can refer to the method and beneficial effects described in the first aspect above, and the repeated parts will be omitted.

[0175] In a sixth aspect, an embodiment of the present application provides a communication device, which is a second network device, or a unit or module in the second network device, including:

[0176] a receiving module, configured to receive an echo signal of a first signal, where the first signal is generated according to a first sequence, where the first sequence is a product of a second sequence and a third sequence;

[0177] The first sequence includes N first elements, the second sequence includes N second elements, the second sequence carries data, and the third sequence includes N third elements greater than or equal to 0.

[0178] The i-th element in the second sequence corresponds to the i-th subcarrier among N subcarriers in the first frequency domain resource, the i-th element in the third sequence corresponds to the i-th subcarrier in the first frequency domain resource, the i-th element in the first sequence is carried on the i-th subcarrier in the first frequency domain resource, N is an integer greater than 1, and i is an integer greater than or equal to 1 and less than or equal to N;

[0179] The first frequency domain resources include M non-overlapping sub-frequency domain resources, the third sequence includes M subsequences, the t-th subsequence in the M subsequences corresponds to the t-th sub-frequency domain resource in the M sub-frequency domain resources, the t-th subsequence in the M subsequences satisfies the t-th relationship among the M relationships, M is an integer greater than or equal to 2 and less than or equal to N, and t is an integer greater than or equal to 1 and less than or equal to M.

[0180] In another possible design, the i-th element in the third sequence is equal to the N-i+1-th element in the third sequence.

[0181] In another possible design, the values ​​of elements of at least one subsequence in the M subsequences are all the same.

[0182] In another possible design, M is equal to 3, a starting frequency of a t1-th sub-frequency domain resource among the M sub-frequency domain resources is less than a starting frequency of a t2-th sub-frequency domain resource among the M sub-frequency domain resources, t1 is an integer greater than or equal to 1 and less than M, t2 is an integer greater than 1 and less than or equal to M, and t1 is less than t2.

[0183] The first subsequence among the M subsequences satisfies the first relationship among the M relationships, and the first relationship is: the values ​​of the elements in the first subsequence are all first values;

[0184] The second subsequence among the M subsequences satisfies the second relationship among the M relationships, and the second relationship is:

[0185] The values ​​of the elements in the second subsequence are all the second value, or the values ​​of the elements in the second subsequence satisfy the polynomial function of the square of (k-(N-1) / 2), or the values ​​of the elements in the second subsequence satisfy Functional relationship, where k is the sequence number of the element in the second subsequence in the third sequence, μ is less than 0, v is greater than 0, and s is greater than 0;

[0186] The third subsequence among the M subsequences satisfies the third relationship among the M relationships, wherein the third relationship is that the values ​​of the elements in the third subsequence are all third values;

[0187] The first value and the third value are both greater than the second value.

[0188] In another possible design, M is equal to 5, a starting frequency of a t1-th sub-frequency domain resource among the M sub-frequency domain resources is less than a starting frequency of a t2-th sub-frequency domain resource among the M sub-frequency domain resources, t1 is an integer greater than or equal to 1 and less than M, t2 is an integer greater than 1 and less than or equal to M, and t1 is less than t2.

[0189] The first subsequence among the M subsequences satisfies the first relationship among the M relationships, and the first relationship is: the values ​​of the elements in the first subsequence are all first values;

[0190] The second subsequence among the M subsequences satisfies the second relationship among the M relationships, and the second relationship is: the values ​​of the elements in the second subsequence are all 1;

[0191] The third subsequence among the M subsequences satisfies the third relationship among the M relationships, and the third relationship is:

[0192] The values ​​of the elements in the third subsequence are all the second value, or the values ​​of the elements in the third subsequence satisfy the polynomial function of the square of (k-(N-1) / 2), or the values ​​of the elements in the third subsequence satisfy Functional relationship, where k is the sequence number of the element in the third subsequence in the third sequence, μ is less than 0, v is greater than 0, and s is greater than 0;

[0193] The fourth subsequence among the M subsequences satisfies the fourth relationship among the M relationships, and the fourth relationship is: the values ​​of the elements in the fourth subsequence are all 1;

[0194] The fifth subsequence among the M subsequences satisfies the fifth relationship among the M relationships, and the fifth relationship is: the values ​​of the elements in the fifth subsequence are all the third value;

[0195] The first value and the third value are both greater than 1, and the second value is greater than 0 and less than or equal to 1.

[0196] In another possible design, the receiving module is also used to receive first information sent by a first network device, where the first information is used to indicate parameter information of the third sequence, and the parameter information includes at least one of the following: the first value, the second value, the third value, the μ, the v, the s, and the M.

[0197] In another possible design, the first signal is used for sensing, or the first signal is used for sensing and channel measurement, or the first signal is used for sensing and channel estimation, or the first signal is used for sensing and data transmission.

[0198] The operations and beneficial effects performed by the communication device can refer to the method and beneficial effects described in the second aspect above, and the repeated parts will be omitted.

[0199] In a seventh aspect, an embodiment of the present application provides a communication device, which is a first terminal device, or a unit or module in the first terminal device, including:

[0200] a receiving module, configured to receive a first signal, where the first signal is generated according to a first sequence, where the first sequence is a product of a second sequence and a third sequence;

[0201] The first sequence includes N first elements, the second sequence includes N second elements, the second sequence carries data, and the third sequence includes N third elements greater than or equal to 0.

[0202] The i-th element in the second sequence corresponds to the i-th subcarrier among N subcarriers in the first frequency domain resource, the i-th element in the third sequence corresponds to the i-th subcarrier in the first frequency domain resource, the i-th element in the first sequence is carried on the i-th subcarrier in the first frequency domain resource, N is an integer greater than 1, and i is an integer greater than or equal to 1 and less than or equal to N;

[0203] The first frequency domain resources include M non-overlapping sub-frequency domain resources, the third sequence includes M subsequences, the t-th subsequence in the M subsequences corresponds to the t-th sub-frequency domain resource in the M sub-frequency domain resources, the t-th subsequence in the M subsequences satisfies the t-th relationship among the M relationships, M is an integer greater than or equal to 2 and less than or equal to N, and t is an integer greater than or equal to 1 and less than or equal to M.

[0204] In another possible design, the i-th element in the third sequence is equal to the N-i+1-th element in the third sequence.

[0205] In another possible design, the values ​​of elements of at least one subsequence in the M subsequences are all the same.

[0206] In another possible design, M is equal to 3, a starting frequency of a t1-th sub-frequency domain resource among the M sub-frequency domain resources is less than a starting frequency of a t2-th sub-frequency domain resource among the M sub-frequency domain resources, t1 is an integer greater than or equal to 1 and less than M, t2 is an integer greater than 1 and less than or equal to M, and t1 is less than t2.

[0207] The first subsequence among the M subsequences satisfies the first relationship among the M relationships, and the first relationship is: the values ​​of the elements in the first subsequence are all first values;

[0208] The second subsequence among the M subsequences satisfies the second relationship among the M relationships, and the second relationship is:

[0209] The values ​​of the elements in the second subsequence are all the second value, or the values ​​of the elements in the second subsequence satisfy the polynomial function of the square of (k-(N-1) / 2), or the values ​​of the elements in the second subsequence satisfy Functional relationship, where k is the sequence number of the element in the second subsequence in the third sequence, μ is less than 0, v is greater than 0, and s is greater than 0;

[0210] The third subsequence among the M subsequences satisfies the third relationship among the M relationships, wherein the third relationship is that the values ​​of the elements in the third subsequence are all third values;

[0211] The first value and the third value are both greater than the second value.

[0212] In another possible design, M is equal to 5, a starting frequency of a t1-th sub-frequency domain resource among the M sub-frequency domain resources is less than a starting frequency of a t2-th sub-frequency domain resource among the M sub-frequency domain resources, t1 is an integer greater than or equal to 1 and less than M, t2 is an integer greater than 1 and less than or equal to M, and t1 is less than t2.

[0213] The first subsequence among the M subsequences satisfies the first relationship among the M relationships, and the first relationship is: the values ​​of the elements in the first subsequence are all first values;

[0214] The second subsequence among the M subsequences satisfies the second relationship among the M relationships, and the second relationship is: the values ​​of the elements in the second subsequence are all 1;

[0215] The third subsequence among the M subsequences satisfies the third relationship among the M relationships, and the third relationship is:

[0216] The values ​​of the elements in the third subsequence are all the second value, or the values ​​of the elements in the third subsequence satisfy the polynomial function of the square of (k-(N-1) / 2), or the values ​​of the elements in the third subsequence satisfy Functional relationship, where k is the sequence number of the element in the third subsequence in the third sequence, μ is less than 0, v is greater than 0, and s is greater than 0;

[0217] The fourth subsequence among the M subsequences satisfies the fourth relationship among the M relationships, and the fourth relationship is: the values ​​of the elements in the fourth subsequence are all 1;

[0218] The fifth subsequence among the M subsequences satisfies the fifth relationship among the M relationships, and the fifth relationship is: the values ​​of the elements in the fifth subsequence are all the third value;

[0219] The first value and the third value are both greater than 1, and the second value is greater than 0 and less than or equal to 1.

[0220] In another possible design, the receiving module is further configured to receive first information sent by a first network device, where the first information is used to indicate parameter information of the third sequence, the parameter information including at least one of the following: the first value, the second value, the third value, μ, v, s, and M;

[0221] A processing module is configured to obtain the second sequence from the first signal based on the first information.

[0222] The operations and beneficial effects performed by the communication device can refer to the method and beneficial effects described in the third aspect above, and the repeated parts will be omitted.

[0223] In an eighth aspect, an embodiment of the present application provides a communication device, which is a second terminal device, or a unit or module in the second terminal device, including:

[0224] a receiving module, configured to receive an echo signal of a first signal, where the first signal is generated according to a first sequence, where the first sequence is a product of a second sequence and a third sequence;

[0225] The first sequence includes N first elements, the second sequence includes N second elements, the second sequence carries data, and the third sequence includes N third elements greater than or equal to 0.

[0226] The i-th element in the second sequence corresponds to the i-th subcarrier among N subcarriers in the first frequency domain resource, the i-th element in the third sequence corresponds to the i-th subcarrier in the first frequency domain resource, the i-th element in the first sequence is carried on the i-th subcarrier in the first frequency domain resource, N is an integer greater than 1, and i is an integer greater than or equal to 1 and less than or equal to N;

[0227] The first frequency domain resources include M non-overlapping sub-frequency domain resources, the third sequence includes M subsequences, the t-th subsequence in the M subsequences corresponds to the t-th sub-frequency domain resource in the M sub-frequency domain resources, the t-th subsequence in the M subsequences satisfies the t-th relationship among the M relationships, M is an integer greater than or equal to 2 and less than or equal to N, and t is an integer greater than or equal to 1 and less than or equal to M.

[0228] In another possible design, the i-th element in the third sequence is equal to the N-i+1-th element in the third sequence.

[0229] In another possible design, the values ​​of elements of at least one subsequence in the M subsequences are all the same.

[0230] In another possible design, M is equal to 3, a starting frequency of a t1-th sub-frequency domain resource among the M sub-frequency domain resources is less than a starting frequency of a t2-th sub-frequency domain resource among the M sub-frequency domain resources, t1 is an integer greater than or equal to 1 and less than M, t2 is an integer greater than 1 and less than or equal to M, and t1 is less than t2.

[0231] The first subsequence among the M subsequences satisfies the first relationship among the M relationships, and the first relationship is: the values ​​of the elements in the first subsequence are all first values;

[0232] The second subsequence among the M subsequences satisfies the second relationship among the M relationships, and the second relationship is:

[0233] The values ​​of the elements in the second subsequence are all the second value, or the values ​​of the elements in the second subsequence satisfy the polynomial function of the square of (k-(N-1) / 2), or the values ​​of the elements in the second subsequence satisfy Functional relationship, where k is the sequence number of the element in the second subsequence in the third sequence, μ is less than 0, v is greater than 0, and s is greater than 0;

[0234] The third subsequence among the M subsequences satisfies the third relationship among the M relationships, wherein the third relationship is that the values ​​of the elements in the third subsequence are all third values;

[0235] The first value and the third value are both greater than the second value.

[0236] In another possible design, M is equal to 5, a starting frequency of a t1-th sub-frequency domain resource among the M sub-frequency domain resources is less than a starting frequency of a t2-th sub-frequency domain resource among the M sub-frequency domain resources, t1 is an integer greater than or equal to 1 and less than M, t2 is an integer greater than 1 and less than or equal to M, and t1 is less than t2.

[0237] The first subsequence among the M subsequences satisfies the first relationship among the M relationships, and the first relationship is: the values ​​of the elements in the first subsequence are all first values;

[0238] The second subsequence among the M subsequences satisfies the second relationship among the M relationships, and the second relationship is: the values ​​of the elements in the second subsequence are all 1;

[0239] The third subsequence among the M subsequences satisfies the third relationship among the M relationships, and the third relationship is:

[0240] The values ​​of the elements in the third subsequence are all the second value, or the values ​​of the elements in the third subsequence satisfy the polynomial function of the square of (k-(N-1) / 2), or the values ​​of the elements in the third subsequence satisfy Functional relationship, where k is the sequence number of the element in the third subsequence in the third sequence, μ is less than 0, v is greater than 0, and s is greater than 0;

[0241] The fourth subsequence among the M subsequences satisfies the fourth relationship among the M relationships, and the fourth relationship is: the values ​​of the elements in the fourth subsequence are all 1;

[0242] The fifth subsequence among the M subsequences satisfies the fifth relationship among the M relationships, and the fifth relationship is: the values ​​of the elements in the fifth subsequence are all the third value;

[0243] The first value and the third value are both greater than 1, and the second value is greater than 0 and less than or equal to 1.

[0244] In another possible design, the receiving module is also used to receive first information sent by a first network device, where the first information is used to indicate parameter information of the third sequence, and the parameter information includes at least one of the following: the first value, the second value, the third value, the μ, the v, the s, and the M.

[0245] In another possible design, the first signal is used for sensing, or the first signal is used for sensing and channel measurement, or the first signal is used for sensing and channel estimation, or the first signal is used for sensing and data transmission.

[0246] The operations and beneficial effects performed by the communication device can refer to the method and beneficial effects described in the fourth aspect above, and the repeated parts will be omitted.

[0247] In the ninth aspect, the present application provides a communication device, which includes a processor and a memory, wherein the memory is used to store a computer program; the processor is used to execute the computer program stored in the memory, so that the communication device performs the method as described in any one of the first aspects.

[0248] In the tenth aspect, the present application provides a communication device, which includes a processor and a memory, the memory being used to store a computer program; the processor being used to execute the computer program stored in the memory so that the communication device performs the method as described in any one of the second aspects.

[0249] In the eleventh aspect, the present application provides a communication device, which includes a processor and a memory, wherein the memory is used to store a computer program; the processor is used to execute the computer program stored in the memory so that the communication device performs the method as described in any one of the third aspects.

[0250] In the twelfth aspect, the present application provides a communication device, which includes a processor and a memory, the memory being used to store a computer program; the processor being used to execute the computer program stored in the memory so that the communication device executes a method as described in any one of the fourth aspects.

[0251] In a thirteenth aspect, the present application provides a computer-readable storage medium for storing a computer program, which, when executed, enables the method described in any one of the first to fourth aspects to be implemented.

[0252] In a fourteenth aspect, the present application provides a computer program product comprising a computer program, which, when executed, enables the method described in any one of the first to fourth aspects to be implemented.

[0253] In the fifteenth aspect, an embodiment of the present application provides a communication system, which includes a first network device, a second network device, a first terminal device and a second terminal device, the first network device is used to execute the steps in the above-mentioned first aspect, the second network device is used to execute the steps in the above-mentioned second aspect, the first terminal device is used to execute the steps in the above-mentioned third aspect, and the second terminal device is used to execute the steps in the above-mentioned fourth aspect. BRIEF DESCRIPTION OF THE DRAWINGS

[0254] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the background technology, the drawings required for use in the embodiments of the present application or the background technology will be described below.

[0255] FIG1( a ) is a schematic diagram of a perception scenario provided in an embodiment of the present application;

[0256] FIG1( b ) is a schematic diagram of another perception scenario provided in an embodiment of the present application;

[0257] FIG1( c ) is a schematic diagram of another perception scenario provided in an embodiment of the present application;

[0258] FIG2 is a flow chart of a communication method provided in an embodiment of the present application;

[0259] FIG3 is a schematic diagram of a third sequence provided by the present application;

[0260] FIG4 is a schematic diagram of a sequence processing process provided in an embodiment of the present application;

[0261] FIG5 is a schematic diagram of a third sequence provided in an embodiment of the present application;

[0262] FIG6 is a schematic diagram of another third sequence provided in an embodiment of the present application;

[0263] FIG7 is a schematic diagram of another third sequence provided in an embodiment of the present application;

[0264] FIG8 is a schematic diagram of another third sequence provided in an embodiment of the present application;

[0265] FIG9 is a schematic diagram of another third sequence provided in an embodiment of the present application;

[0266] FIG10 is a schematic structural diagram of a communication device provided in an embodiment of the present application;

[0267] FIG11 is a schematic structural diagram of another communication device provided in an embodiment of the present application;

[0268] FIG12 is a schematic structural diagram of a network device provided in an embodiment of the present application;

[0269] FIG13 is a schematic structural diagram of a terminal device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0270] The following is an explanation of the key terms involved in this application:

[0271] Perception: Perception is the detection of parameters of objects in the physical environment, such as their position and velocity. A radar detection system detects targets by emitting electromagnetic waves and analyzing the echo signals reflected from objects. Perception can also be called detection.

[0272] Perception signal: A signal used to perceive (or detect) a perceived target (or target object). Perception signals are also called detection signals, linear frequency modulation signals, radar signals, radar perception signals, radar detection signals, or environmental perception signals. Perception signals can be pulse signals or signals in wireless communication systems. For example, the perception signal can be an orthogonal frequency division multiplexing (OFDM) signal obtained by modulating a specific sequence on a subcarrier. The specific sequence can be any of the following sequences: a Zadoff-Chu sequence (ZC sequence), a pseudo-random sequence, a predefined sequence, etc. Pseudo-random sequences include any of the following sequences: a longest linear feedback shift register sequence (m-sequence), a Gold sequence, etc. The predefined sequence can be a random data symbol, for example, a random data symbol modulated by quadrature phase shift keying (QPSK), 16-bit quadrature amplitude modulation (QAM), etc.

[0273] Communication-perception fusion signal: also known as synaesthesia fusion signal, is a signal used for both communication and perception. The signal used for communication can be understood as carrying communication data or communication reference signal sequence to be transmitted between communication devices.

[0274] Communication signal: A signal used for communication transmitted between communication devices, including, for example, a signal transmitted between a network device and a terminal device. A communication signal is, for example, a signal carried on a physical downlink shared channel (PDSCH).

[0275] The communication method provided in the embodiment of the present application can be applied to a fourth generation (4G) communication system, such as a long term evolution (LTE) communication system, and can also be applied to a fifth generation (5G) communication system, such as a 5G new radio (NR) communication system, or to various communication systems evolved after 5G, such as a sixth generation (6G) communication system. The method provided in the embodiment of the present application can also be applied to a Bluetooth system, a wireless fidelity (Wifi) system, a long range radio (LoRa) system, or a vehicle networking system. The method provided in the embodiment of the present application can also be applied to a satellite communication system, wherein the satellite communication system can be integrated with the above-mentioned communication system.

[0276] This application can be applied to the following scenarios:

[0277] As shown in Figure 1(a), Figure 1(a) is a schematic diagram of a perception scenario provided by an embodiment of the present application. The network device transmits a perception signal or a synaesthesia fusion signal, and the network device receives the echo signal generated by the perception signal or the synaesthesia fusion signal reflecting off the target in the environment, thereby perceiving the position, speed and other information of the target. It is worth noting that the target and the terminal device in the environment can be the same device or different devices. For example, when the target and the terminal device in the environment are the same device, the network device A sends a synaesthesia fusion signal for perception, and the synaesthesia fusion signal also carries the communication data or communication reference signal sequence that the network device needs to transmit to the terminal device. When the target and the terminal device in the environment are different devices, the network device sends a perception signal to perceive the target, and simultaneously sends a communication signal using frequency division multiplexing or space division multiplexing to communicate with the terminal device.

[0278] As shown in Figure 1(b), Figure 1(b) is a schematic diagram of another perception scenario provided by an embodiment of the present application. Network device A transmits a perception signal or a synaesthesia fusion signal, and another network device B receives the echo signal generated by the perception signal or the synaesthesia fusion signal reflecting off a target in the environment, thereby perceiving the position, speed and other information of the target. It should be noted that the target and the terminal device in the environment can be the same device or different devices. For example, when the target and the terminal device in the environment are the same device, network device A sends a synaesthesia fusion signal for perception, and the synaesthesia fusion signal carries the communication data or communication reference signal sequence that the network device needs to transmit to the terminal device. When the target and the terminal device in the environment are different devices, network device A sends a perception signal to perceive the target, and simultaneously sends communication signals using frequency division multiplexing or space division multiplexing to communicate with the terminal device.

[0279] As shown in Figure 1(c), Figure 1(c) is a schematic diagram of another perception scenario provided by an embodiment of the present application. Network device A transmits a synaesthesia fusion signal, and terminal device B receives the echo signal generated by the synaesthesia fusion signal being reflected by a target in the environment, thereby perceiving the position, speed and other information of the target. It should be noted that the target in the environment and terminal device B are different devices. Network device A sends a synaesthesia fusion signal for perception, and the synaesthesia fusion signal carries the communication data or communication reference signal sequence that network device A needs to transmit to terminal device B.

[0280] As shown in the figure above, the communication system of this application document includes network equipment and terminal equipment. Among them:

[0281] A network device is a network-side device with wireless transceiver capabilities. For example, the network device can be a base station, an evolved NodeB (eNodeB), a next-generation NodeB (gNB) in a 5G mobile communication system, a transmission reception point (TRP), a base station that has been evolved from 3GPP, an access node in a WiFi system, a wireless relay node, a wireless backhaul node, etc. The network device can include one or more co-located or non-co-located transmission and reception points. For another example, the network device can include a centralized unit (CU), a distributed unit (DU), or both a CU and a DU. In this way, some of the functions of a wireless access network device can be implemented through multiple network function entities. These network function entities can be network elements in hardware devices, software functions running on dedicated hardware, or virtualized functions instantiated on a platform (e.g., a cloud platform). For another example, in vehicle-to-everything (V2X) technology, the network device can be a road side unit (RSU). The multiple network devices in the communication system can be base stations of the same type or different types. The base station can communicate with the terminal device or communicate with the terminal device through a relay station. The network device in the present application can also be a device with a sensing function, which can transmit a sensing signal and receive and process reflected signals from targets in the environment. In the embodiment of the present application, the communication device for realizing the function of the network device can be a network device, or a network device with some functions of a base station, or a device that can support the network device to realize the function, such as a chip system, which can be installed in the network device.

[0282] The types of multiple network devices in a communication system may be the same or different. The network device in this application may also be a device with a sensing function. For example, the network device may transmit a sensing signal and receive and process an echo signal reflected by an object in the environment.

[0283] In an embodiment of the present application, the network device may be a device in a wireless network. For example, the network device may be a device deployed in a radio access network to provide wireless communication functions for a terminal device. For example, the network device may be a radio access network (RAN) node that connects a terminal device to a wireless network, and may also be referred to as an access network device. In an embodiment of the present application, the communication device for implementing the network device function may be a network device, or a network device having some of the functions of a base station, or a device capable of supporting the network device to implement the function, such as a chip system, which may be installed in the network device or used in conjunction with the network device.

[0284] A terminal device is a user-side device with wireless transceiver capabilities. It can be a fixed device, mobile device, handheld device (such as a mobile phone), wearable device, in-vehicle device, or a wireless device built into any of the above devices (such as a communication module, modem, or chip system). Terminal devices are used to connect people, objects, and machines, and can be used in a wide range of scenarios, such as cellular communications, device-to-device (D2D) communications, vehicle-to-everything (V2X) communications, machine-to-machine / machine-type communications (M2M / MTC) communications, the Internet of Things (IoT), virtual reality (VR), augmented reality (AR), industrial control, self-driving, remote medical care, smart grids, smart furniture, smart offices, smart wearables, smart transportation, smart cities, drones, robots, and other scenarios. For example, the terminal device may be a handheld terminal in cellular communication, a communication device in D2D, an IoT device in MTC, a surveillance camera in smart transportation and smart cities, or a communication device on a drone, etc. The terminal device may sometimes be referred to as user equipment (UE), user terminal, user device, user unit, user station, terminal, access terminal, access station, UE station, remote station, mobile device, or wireless communication device, etc.

[0285] In the system described in this application, network devices can sense targets by sending perception signals or synaesthesia fusion signals. The targets can be various tangible objects in the environment that can reflect electromagnetic waves, such as mountains, forests, or buildings. They can also include movable objects such as vehicles, drones, pedestrians, and terminal devices. The targets can also be referred to as perceived targets, detected targets, perceived objects, detected objects, or perceived devices, etc., and are not limited in the embodiments of this application.

[0286] Network equipment can use the communication signal in the existing 5G communication system as the synaesthesia fusion signal. The communication signal in the 5G communication system is generated based on the OFDM modulation method, and its generation formula is: the time continuous signal of the OFDM symbol numbered l on port p, with subcarrier configuration μ The formula is:

[0287] in, The value of the resource element (RE) with frequency domain number k, time domain number l, antenna port p, and subcarrier spacing μ, which carries communication data or reference signal sequence. It is worth noting that the value of the RE or subcarrier with number k of the communication signal is Indicates the size of the resource grid; represents the number of REs contained in each resource block; Δf represents the subcarrier spacing; j represents the imaginary unit; t represents time; e represents a natural constant, which is the base of the natural logarithm function and its value is approximately 2.718281828459045.

[0288] However, the communication signals in 5G communication systems are specifically designed for communication. When using these signals as synaesthesia fusion signals, their perceptual performance may not meet perception requirements in different perception scenarios. For example, in some perception scenarios, higher requirements are placed on the ranging accuracy of perception; in other perception scenarios, higher requirements are placed on the false alarm performance of perception. To address the above technical issues, the embodiments of the present application provide the following solutions.

[0289] Please refer to Figure 2, which is a flow chart of a communication method provided by an embodiment of the present application. The method includes but is not limited to the following steps:

[0290] S201: A first network device generates a first signal according to a first sequence, where the first sequence is a product of a second sequence and a third sequence.

[0291] The second sequence includes N second elements, and any two of the N second elements may be the same or different. The second sequence carries data, or the elements of the second sequence carry data. The data may be communication data or a communication reference sequence that the first network device needs to send to the terminal device. For example, the first network device may convert a medium access control (MAC) layer transmission block (including bit data of 0 and 1) into a second sequence. The conversion process includes at least one of the following processes: channel coding, rate matching, scrambling, constellation mapping, discrete Fourier transform (DFT) precoding (optional), and multi-antenna precoding. Each element in the second sequence is a complex number, comprising a real part and an imaginary part.

[0292] The second sequence can be associated / corresponding to the frequency domain resource, and the second sequence can also be associated / corresponding to the time domain resource. For example, the second sequence corresponds to the first frequency domain resource of a certain symbol / codeword. The second sequence is associated with the first frequency domain resource, and the first frequency domain resource includes N subcarriers (or N REs). Furthermore, the i-th element of the second sequence is associated with the i-th subcarrier of the first frequency domain resource, which can be understood as: the i-th element of the second sequence corresponds to the i-th subcarrier of the first frequency domain resource, or the i-th element of the second sequence is the value carried on the i-th subcarrier of the N subcarriers in the first frequency domain resource before the second sequence is multiplied by the third sequence. The N is an integer greater than 1, and the i is an integer greater than or equal to 1 and less than or equal to N.

[0293] For example, the first time domain resource is an orthogonal frequency division multiplexing (OFDM) symbol, denoted as OFDM symbol 1. An OFDM symbol includes multiple REs or subcarriers, and the multiple REs or subcarriers are the first frequency domain resources. The element numbered i in the second sequence is associated with the RE or subcarrier numbered 1 in the time domain and i in the frequency domain.

[0294] The third sequence does not carry data, or the elements of the third sequence do not carry data. The third sequence includes N third elements greater than or equal to 0, and any two of the N third elements can be the same or different. The i-th element in the third sequence corresponds to the i-th subcarrier in the first frequency domain resource. The third sequence can be understood as a window sequence. The first sequence can be obtained by windowing the second sequence using the third sequence, where windowing refers to element-by-element multiplication of the sequence.

[0295] Optionally, the i-th element in the third sequence is equal to the N-i+1-th element in the third sequence. That is, the third sequence can be a symmetric sequence, for example, the first element is equal to the N-th element, the second element is equal to the N-1-th element, and so on.

[0296] In an embodiment of the present application, the first frequency domain resource includes M non-overlapping sub-frequency domain resources. Optionally, each sub-frequency domain resource includes one or more consecutive subcarriers (or one or more REs). The third sequence includes M subsequences, the t-th subsequence in the M subsequences corresponds to the t-th sub-frequency domain resource in the M sub-frequency domain resources, and the t-th subsequence in the M subsequences satisfies the t-th relationship among the M relationships. It can be seen that the third sequence is a segmented sequence, and each subsequence is associated with a sub-frequency domain resource. The M is an integer greater than or equal to 2 and less than or equal to N, and the t is an integer greater than or equal to 1 and less than or equal to M. For example, M=3, the first frequency domain resource includes 3 non-overlapping sub-frequency domain resources, and the third sequence includes 3 subsequences. The first subsequence in the 3 subsequences corresponds to the first sub-frequency domain resource in the 3 sub-frequency domain resources, and the elements in the first subsequence satisfy relationship 1. The second subsequence of the three subsequences corresponds to the second sub-frequency domain resource of the three sub-frequency domain resources, and the elements in the second subsequence satisfy relationship 2. The third subsequence of the three subsequences corresponds to the third sub-frequency domain resource of the three sub-frequency domain resources, and the elements in the third subsequence satisfy relationship 3. M = 4 or other values, and so on, are not repeated here. By designing different segmentation forms of the third sequence, the first signal generated based on the first sequence can meet the perceptual performance requirements of different perceptual scenarios.

[0297] It should be noted that the "relationship" in the t-th relationship among the M relationships satisfied by the t-th subsequence can be understood as a functional relationship, a mapping relationship, etc. For example, the elements of the t-th subsequence and the numbers of the elements in the t-th subsequence satisfy a functional relationship. w[i] is the third sequence, and the third sequence includes 3 subsequences. The first subsequence is the elements numbered from 0 to N1-1 in the third sequence. The elements of the first subsequence and the numbers of the elements in the first subsequence satisfy the functional relationship h1. The second subsequence is the elements numbered from N1 to N2-1 in the third sequence. The elements of the second subsequence and the numbers of the elements in the second subsequence satisfy the functional relationship h2. The third subsequence is the elements numbered from N2 to N-1 in the third sequence. The elements of the third subsequence and the numbers of the elements in the third subsequence satisfy the functional relationship h3.

[0298] In particular, the kth element in the third sequence is less than or equal to the maximum value of the k1th element in the third sequence and the k2th element in the third sequence, the k, the k1 and the k2 are all integers greater than or equal to 1 and less than or equal to N, the k2 is greater than the k1, and the k is greater than or equal to the k1 and less than or equal to k2. As shown in Figure 3, Figure 3 is a schematic diagram of a third sequence provided by the present application. Under the condition that the kth element is less than or equal to the maximum value of the k1th element in the third sequence and the k2th element in the third sequence, the third sequence w[i] is a concave-shaped sequence. By windowing the second sequence with the concave-shaped third sequence to obtain the first sequence, the perceived ranging accuracy can be improved.

[0299] The first sequence includes N first elements, and any two of the N first elements may be the same or different. "The first sequence is the product of the second sequence and the third sequence" means that the i-th element of the first sequence is equal to the product of the i-th element in the second sequence and the i-th element in the third sequence. The i-th element in the first sequence is carried on the i-th subcarrier in the first frequency domain resource.

[0300] It should be noted that, since the i-th element of the second sequence corresponds to the i-th subcarrier in the first frequency domain resource, and the i-th element of the first sequence is the product of the i-th element of the second sequence and the i-th element of the third sequence, it can be considered that the i-th element in the third sequence corresponds to the i-th subcarrier in the first frequency domain resource, and the i-th element in the first sequence corresponds to the i-th subcarrier in the first frequency domain resource. In addition, to ensure that the power of the first sequence and the second sequence is equal, the sum of the squares of all elements in the third sequence is equal to N.

[0301] Specifically, after the first network device multiplies the i-th element in the second sequence by the i-th element in the third sequence to obtain the first sequence, the first sequence can be mapped to the first frequency domain resource. Further, the i-th element of the first sequence can be mapped to the i-th subcarrier in the first frequency domain resource. For example, if the first time domain resource is an OFDM symbol numbered 1, denoted as OFDM symbol 1, mapping the i-th element of the first sequence to the i-th subcarrier in the first frequency domain resource can be understood as: the element numbered i in the first sequence is mapped to the resource element numbered 1 in the time domain and i in the frequency domain, or the element numbered i in the first sequence is carried on the resource element numbered 1 in the time domain and i in the frequency domain, or the value of the resource element numbered 1 in the time domain and i in the frequency domain is the element numbered i in the first sequence. Then, an OFDM baseband signal is generated according to the first sequence mapped on the first frequency domain resource. The expression of the OFDM baseband signal is:

[0302] Where s(t) is the OFDM baseband signal, b[z] represents the element numbered z in the first sequence, is the number of subcarriers included in the first frequency domain resource. Δf represents the subcarrier spacing, j represents the imaginary unit, t represents time, and e represents a natural constant, which is the base of the natural logarithm function and has a value of approximately 2.718281828459045.

[0303] Finally, the first network device may perform up-conversion and other processing on the OFDM baseband signal to generate a first signal. Depending on whether the first sequence carries data, the first signal may be a synaesthesia fusion signal or a perception signal.

[0304] Optionally, the second sequence may not carry data, or the elements of the second sequence may not carry data. If the second sequence carries data or the elements of the second sequence carry data, and the first sequence also carries data or the elements of the first sequence also carry data, then the first signal is a synaesthesia fusion signal. If the second sequence does not carry data or the elements of the second sequence do not carry data, and the first sequence also does not carry data or the elements of the first sequence do not carry data, then the first signal is a perceptual signal.

[0305] For example, as shown in Figure 4, Figure 4 is a schematic diagram of a sequence processing process provided by an embodiment of the present application. The element numbered i in the second sequence is denoted as a[i], the element numbered i in the first sequence is denoted as b[i], and the element numbered i in the third sequence is denoted as w[i]. First, the second sequence a[0], a[1], ..., a[N-1] is windowed using the third sequence to obtain the first sequence b[0], b[1], ..., b[N-1], that is, the element numbered i in the second sequence is multiplied by the element numbered i in the third sequence to obtain the element numbered i in the first sequence. The element numbered i in the first sequence can be expressed as: b[i] = a[i] × w[i]. Then, the first sequence b[0], b[1], ..., b[N-1] is subjected to an inverse fast Fourier transform (IFFT), and the first sequence after the inverse fast Fourier transform is converted from parallel to serial to obtain an OFDM baseband signal. Windowing can also be called frequency domain filtering. It is worth noting that if the process of generating the second sequence includes DFT precoding, the OFDM baseband signal can also become a discrete Fourier transform spread orthogonal frequency division multiplexing (DFT-s-OFDM) baseband signal. Finally, the first signal is generated based on the OFDM baseband signal and transmitted via the antenna.

[0306] The following are several forms of the third sequence:

[0307] In the present application document, the first frequency domain resource includes M non-overlapping sub-frequency domain resources, each sub-frequency domain resource includes one or more subcarriers. The third sequence includes M subsequences, each subsequence includes one or more elements. The t-th subsequence in the M subsequences corresponds to the t-th sub-frequency domain resource in the M sub-frequency domain resources, and the t-th subsequence in the M subsequences satisfies the t-th relationship among the M relationships. The starting frequency of the t1-th sub-frequency domain resource in the M sub-frequency domain resources is less than the starting frequency of the t2-th sub-frequency domain resource in the M sub-frequency domain resources, the t1 is an integer greater than or equal to 1 and less than M, the t2 is an integer greater than 1 and less than or equal to M, and the t1 is less than the t2.

[0308] Optionally, the values ​​of elements in at least one subsequence among the M subsequences included in the third sequence are all the same, that is, the values ​​of the elements in at least one subsequence are constant.

[0309] In the case of M=3, the first frequency domain resources include the 1st sub-frequency domain resource, the 2nd sub-frequency domain resource and the 3rd sub-frequency domain resource. The 1st sub-frequency domain resource is from the 1st subcarrier to the f1th subcarrier in the first frequency domain resource, the 2nd sub-frequency domain resource is from the f1+1th subcarrier to the f2th subcarrier in the first frequency domain resource, and the 3rd sub-frequency domain resource is from the f2+1th subcarrier to the Nth subcarrier in the first frequency domain resource. Wherein, the f1 and the f2 are integers greater than or equal to 1 and less than N, and the f1 is less than the f2. It can be seen that the starting frequency of the 1st sub-frequency domain resource is the frequency corresponding to the 1st subcarrier, the starting frequency of the 2nd sub-frequency domain resource is the frequency corresponding to the f1+1th subcarrier, and the starting frequency of the 3rd sub-frequency domain resource is the frequency corresponding to the f2+1th subcarrier. Therefore, the starting frequency of the first sub-frequency domain resource is less than the starting frequency of the second sub-frequency domain resource, and the starting frequency of the second sub-frequency domain resource is less than the starting frequency of the third sub-frequency domain resource. In addition, the first subsequence in the M subsequences corresponds to the first sub-frequency domain resource in the M sub-frequency domain resources, the second subsequence in the M subsequences corresponds to the second sub-frequency domain resource in the M sub-frequency domain resources, and the third subsequence in the M subsequences corresponds to the third sub-frequency domain resource in the M sub-frequency domain resources. Specifically, when M=3, the third sequence may include the following forms:

[0310] In one optional manner, the first subsequence among the M subsequences satisfies the first relation among the M relations, where the first relation is that the values ​​of the elements in the first subsequence are all first values. The second subsequence among the M subsequences satisfies the second relation among the M relations, where the second relation is that the values ​​of the elements in the second subsequence are all second values. The third subsequence among the M subsequences satisfies the third relation among the M relations, where the third relation is that the values ​​of the elements in the third subsequence are all third values.

[0311] Optionally, the first value and the third value are both greater than the second value.

[0312] Optionally, the value of the number of subcarriers included in the first subfrequency domain resource divided by the number N of all subcarriers included in the first frequency domain resource is less than 0.25, or the value of the number of subcarriers included in the third subfrequency domain resource divided by the number N of all subcarriers included in the first frequency domain resource is less than 0.25, or the value of the sum of the number of subcarriers included in the first subfrequency domain resource and the third subfrequency domain resource divided by the number N of all subcarriers included in the first frequency domain resource is less than 0.5.

[0313] Optionally, the first value is equal to the third value.

[0314] Optionally, the number of subcarriers included in the first sub-frequency domain resource is equal to the number of subcarriers included in the third sub-frequency domain resource.

[0315] For example, as shown in Figure 5, Figure 5 is a schematic diagram of a third sequence provided by an embodiment of the present application. The first frequency domain resource is divided into three continuous sub-frequency domain resources by the first frequency domain separation point A and the second frequency domain separation point B. The first frequency domain separation point A and the second frequency domain separation point B can be represented by subcarrier numbers, or by resource block (RB) numbers, or by resource block group (RBG) numbers, and this application does not limit them. Among them, the first frequency domain separation point A is smaller than the second frequency domain separation point B, and the part of the first frequency domain resource with a number smaller than the first frequency domain separation point A is called the first sub-frequency domain resource, the part of the first frequency domain resource with a number greater than or equal to the first frequency domain separation point A and less than or equal to the second frequency domain separation point B is called the second sub-frequency domain resource, and the part of the first frequency domain resource with a number greater than the second frequency domain separation point B is called the third sub-frequency domain resource. The first subsequence corresponds to the first sub-frequency domain resource and satisfies the first relationship: the values ​​of all elements in the first subsequence are the first value. The second subsequence corresponds to the second sub-frequency domain resource and satisfies the second relationship: the values ​​of all elements in the second subsequence are the second value. The third subsequence corresponds to the third sub-frequency domain resource and satisfies the third relationship: the values ​​of all elements in the third subsequence are the third value. The following examples illustrate the first value, the second value, and the third value.

[0316] The first value and the third value may both be equal to The second value can be equal to 0.4082. The number of subcarriers included in the first frequency domain resource is 792, and the first sub-frequency domain resource includes subcarriers numbered 0 to 179, that is, the first sub-frequency domain resource includes 180 subcarriers, the second sub-frequency domain resource includes subcarriers numbered 180 to 611, that is, the second sub-frequency domain resource includes 432 subcarriers, and the third sub-frequency domain resource includes subcarriers numbered 612 to 791, that is, the third sub-frequency domain resource includes 180 subcarriers. It can be verified that the number of subcarriers included in the first sub-frequency domain resource is 180, and the value of the number of subcarriers included in the first sub-frequency domain resource, 180, divided by the number of subcarriers included in the first frequency domain resource, 792, is approximately 0.227, which is less than 0.25.

[0317] Alternatively, the first value and the third value may both be equal to 2, the second value may be equal to 0.577, the number of subcarriers included in the first frequency domain resource is 792, the first sub-frequency domain resource includes subcarriers numbered 0 to 71, that is, the first sub-frequency domain resource includes 72 subcarriers, the second sub-frequency domain resource includes subcarriers numbered 72 to 719, that is, the second sub-frequency domain resource includes 648 subcarriers, and the third sub-frequency domain resource includes subcarriers numbered 720 to 791, that is, the third sub-frequency domain resource includes 72 subcarriers. It can be verified that the number of subcarriers included in the first sub-frequency domain resource is 72, and the value of the number of subcarriers included in the first sub-frequency domain resource, 72, divided by the number of subcarriers included in the first frequency domain resource, 792, is approximately 0.091, which is less than 0.25.

[0318] Alternatively, the first value and the third value may both be equal to The second value can be equal to 0.6476, the number of subcarriers included in the first frequency domain resource is 792, the first sub-frequency domain resource includes subcarriers numbered 0 to 23, that is, the first sub-frequency domain resource includes 24 subcarriers, the second sub-frequency domain resource includes subcarriers numbered 24 to 767, that is, the second sub-frequency domain resource includes 744 subcarriers, and the third sub-frequency domain resource includes subcarriers numbered 768 to 791, that is, the third sub-frequency domain resource includes 24 subcarriers. It can be verified that the number of subcarriers included in the first sub-frequency domain resource is 24, and the value of the number of subcarriers included in the first sub-frequency domain resource, 24, divided by the number of subcarriers included in the first frequency domain resource, 792, is approximately 0.030, which is less than 0.25.

[0319] In another implementation, the first subsequence among the M subsequences satisfies the first of the M relations, where the first relation is: the k1th element in the first subsequence is greater than or equal to the k2th element in the first subsequence. The second subsequence among the M subsequences satisfies the second of the M relations, where the second relation is: the kth element in the second subsequence is greater than or equal to the minimum of the k1th element in the second subsequence and the k2th element in the second subsequence. The third subsequence among the M subsequences satisfies the third of the M relations, where the k1th element in the third subsequence is less than or equal to the k2th element in the third subsequence. The k, k1, and k2 are all integers greater than or equal to 1 and less than or equal to N, the k2 is greater than the k1, and the k is greater than or equal to the k1 and less than or equal to k2. It can be seen that the first subsequence is a monotonically decreasing sequence, the second subsequence is a convex sequence, and the third subsequence is a monotonically increasing sequence.

[0320] Optionally, the number of subcarriers included in the first sub-frequency domain resource is equal to the number of subcarriers included in the third sub-frequency domain resource.

[0321] For example, as shown in Figure 6, Figure 6 is a schematic diagram of another third sequence provided by an embodiment of the present application. The first frequency domain resource is divided into three continuous sub-frequency domain resources by the first frequency domain separation point A and the second frequency domain separation point B. The first frequency domain separation point A and the second frequency domain separation point B can be represented by a subcarrier number, or by a resource block (RB) number, or by a resource block group (RBG) number, and this application does not limit it. Among them, the first frequency domain separation point A is smaller than the second frequency domain separation point B, and the part of the first frequency domain resource with a number smaller than the first frequency domain separation point A is called the first sub-frequency domain resource, the part of the first frequency domain resource with a number greater than or equal to the first frequency domain separation point A and less than or equal to the second frequency domain separation point B is called the second sub-frequency domain resource, and the part of the first frequency domain resource with a number greater than the second frequency domain separation point B is called the third sub-frequency domain resource. Among them, the first subsequence is associated with the first sub-frequency domain resource, and the first subsequence is a monotonically decreasing sequence. The second subsequence is associated with the second sub-frequency domain resource, and the second subsequence is a convex sequence. The third subsequence is associated with the third sub-frequency domain resource, and the third subsequence is a monotonically increasing sequence.

[0322] In another implementation, the first subsequence among the M subsequences satisfies the first of the M relations, where the first relation is that the values ​​of the elements in the first subsequence are all first values. The second subsequence among the M subsequences satisfies the second of the M relations, where the second relation is that the values ​​of the elements in the second subsequence satisfy a polynomial function of the square of (k-(N-1) / 2), where k is the sequence number of the elements in the third subsequence in the third sequence. The third subsequence among the M subsequences satisfies the third of the M relations, where the third relation is that the values ​​of the elements in the third subsequence are all third values.

[0323] Among them, the polynomial function can be expressed as y=a0+a1x+a2x 2 +……+a n x n Among them, a0, a1, a2, ..., a n is a constant, x is the independent variable, and y is the dependent variable. “The values ​​of the elements in the second subsequence satisfy the polynomial function of the square of (k-(N-1) / 2)” means that when the square of (k-(N-1) / 2) is substituted into x, the value of the element with sequence number k is y=a0+a1(k-(N-1) / 2). 2+a2(k-(N-1) / 2) 4 +……+a n (k-(N-1) / 2) 2n .

[0324] Optionally, the first value is equal to the third value.

[0325] Optionally, the number of subcarriers included in the first sub-frequency domain resource is equal to the number of subcarriers included in the third sub-frequency domain resource.

[0326] Optionally, the element with sequence number i in the third sequence is equal to the element with sequence number Ni-1. For example, when N=9, the first subsequence includes the element with sequence number 0, the element with sequence number 1, and the element with sequence number 2 in the third sequence. The elements in the second subsequence include the element with sequence number 3, the element with sequence number 4, and the element with sequence number 5 in the third sequence. The third subsequence includes the element with sequence number 6, the element with sequence number 7, and the element with sequence number 8 in the third sequence. The elements in the first subsequence are all 1, and the elements in the third subsequence are all 1. The element with sequence number 0 is the same as the element with sequence number 8, the element with sequence number 1 is the same as the element with sequence number 7, and the element with sequence number 2 is the same as the element with sequence number 6. The element with sequence number 3 satisfies (3-(9-1) / 2)=-1, and the element with sequence number 5 satisfies (5-(9-1) / 2)=1, and the values ​​calculated by the square polynomial function of the two elements are the same. It can be seen that the third sequence is a symmetrical sequence.

[0327] For example, as shown in Figure 7, Figure 7 is a schematic diagram of another third sequence provided by an embodiment of the present application. The first frequency domain resource is divided into three continuous sub-frequency domain resources by the first frequency domain separation point A and the second frequency domain separation point B. The first frequency domain separation point A and the second frequency domain separation point B can be represented by subcarrier numbers, or by RB numbers, or by RBG numbers, and this application does not limit this. Among them, the first frequency domain separation point A is smaller than the second frequency domain separation point B, and the part of the first frequency domain resource with a number smaller than the first frequency domain separation point A is called the first sub-frequency domain resource, the part of the first frequency domain resource with a number greater than or equal to the first frequency domain separation point A and less than or equal to the second frequency domain separation point B is called the second sub-frequency domain resource, and the part of the first frequency domain resource with a number greater than the second frequency domain separation point B is called the third sub-frequency domain resource. The first subsequence corresponds to the first sub-frequency domain resource, and the first subsequence satisfies the first relationship. The first relationship: the values ​​of the elements in the first subsequence are all first values. The second subsequence corresponds to the second sub-frequency domain resource, and the second subsequence satisfies the second relationship. The second relationship is: the values ​​of the elements in the second subsequence satisfy the polynomial function of the square of (k-(N-1) / 2). The third subsequence corresponds to the third sub-frequency domain resource, and the third subsequence satisfies the third relationship. The third relationship is: the values ​​of the elements in the third subsequence are all third values.

[0328] The polynomial function of the square of (k-(N-1) / 2) is the functional relationship: The values ​​of the elements in the second subsequence satisfy Function relationship, k is the sequence number of the element in the second subsequence in the third sequence. That is, for the element with sequence number k in the third sequence and in the second subsequence, the value of the element is Where d0, d1, or d2 is a parameter, d0 is greater than 0, d1 is greater than or equal to 0, and d2 is greater than 0. For example, the values ​​of the parameters in the functional relationship are: d0 = 0.545, d1 = 912.20, d2 = 339.93. Alternatively, d0 = 0.545, d1 = 1164.52, d2 = 820.97. Alternatively, d0 = 0.545, d1 = 1416.84, d2 = 1302.00.

[0329] It should be noted that the value of the first frequency domain separation point can be 0 (subcarrier number) and the value of the second frequency domain separation point can be N-1 (subcarrier number). In this case, the first sub-frequency domain resource and the third sub-frequency domain resource are empty sets, and the third sequence is determined only by the above-mentioned polynomial function.

[0330] In another implementation, the first frequency domain resource is divided into three continuous sub-frequency domain resources by the first frequency domain separation point A and the second frequency domain separation point B. The first frequency domain separation point A and the second frequency domain separation point B can be represented by the subcarrier number, or by the RB number, or by the RBG number, and this application does not limit it. Among them, the first frequency domain separation point A is smaller than the second frequency domain separation point B, and the part of the first frequency domain resource with a number smaller than the first frequency domain separation point A is called the first sub-frequency domain resource, the part of the first frequency domain resource with a number greater than or equal to the first frequency domain separation point A and less than or equal to the second frequency domain separation point B is called the second sub-frequency domain resource, and the part of the first frequency domain resource with a number greater than the second frequency domain separation point B is called the third sub-frequency domain resource.

[0331] The first subsequence corresponds to the first sub-frequency domain resource, and the first subsequence in the M subsequences satisfies the first relationship in the M relationships, and the first relationship is that the values ​​of the elements in the first subsequence are all the first value. The second subsequence corresponds to the second sub-frequency domain resource, and the second subsequence in the M subsequences satisfies the second relationship in the M relationships, and the second relationship is that the values ​​of the elements in the second subsequence satisfy Function relationship, wherein k is the sequence number of the element in the second subsequence in the third sequence, μ, v, and s are all parameters, μ is less than 0, v is greater than 0, and s is greater than 0. The third subsequence corresponds to the third sub-frequency domain resource. The third subsequence among the M subsequences satisfies the third relationship among the M relationships, and the third relationship is that the values ​​of the elements in the third subsequence are all third values.

[0332] Optionally, the first value is equal to the third value.

[0333] Optionally, the number of subcarriers included in the first sub-frequency domain resource is equal to the number of subcarriers included in the third sub-frequency domain resource.

[0334] It should be noted that the value of the first frequency domain separation point can be 0 (subcarrier number), and the value of the second frequency domain separation point can be N-1 (subcarrier number). In this case, the first sub-frequency domain resource and the third sub-frequency domain resource are empty sets, and the third sequence is determined only by the above functional relationship.

[0335] In the case of M=5, the first frequency domain resources include the 1st sub-frequency domain resource, the 2nd sub-frequency domain resource, the 3rd sub-frequency domain resource, the 4th sub-frequency domain resource and the 5th sub-frequency domain resource, the 1st sub-frequency domain resource is the 1st subcarrier to the f1th subcarrier in the first frequency domain resource, the 2nd sub-frequency domain resource is the f1+1th subcarrier to the f2th subcarrier in the first frequency domain resource, the 3rd sub-frequency domain resource is the f2+1th subcarrier to the f3th subcarrier in the first frequency domain resource, the 4th sub-frequency domain resource is the f3+1th subcarrier to the f4th subcarrier in the first frequency domain resource, and the 5th sub-frequency domain resource is the f4+1th subcarrier to the Nth subcarrier in the first frequency domain resource. Wherein, the f1, the f2, the f3 and the f4 are all integers greater than or equal to 1 and less than N, the f1 is less than the f2, the f2 is less than the f3, and the f3 is less than the f4. It can be seen that the starting frequency of the first sub-frequency domain resource is the frequency corresponding to the first subcarrier, the starting frequency of the second sub-frequency domain resource is the frequency corresponding to the f1+1th subcarrier, the starting frequency of the third sub-frequency domain resource is the frequency corresponding to the f2+1th subcarrier, the starting frequency of the fourth sub-frequency domain resource is the frequency corresponding to the f3+1th subcarrier, and the starting frequency of the fifth sub-frequency domain resource is the frequency corresponding to the f4+1th subcarrier. Therefore, the starting frequency of the first sub-frequency domain resource is less than the starting frequency of the second sub-frequency domain resource, the starting frequency of the second sub-frequency domain resource is less than the starting frequency of the third sub-frequency domain resource, the starting frequency of the third sub-frequency domain resource is less than the starting frequency of the fourth sub-frequency domain resource, and the starting frequency of the fourth sub-frequency domain resource is less than the starting frequency of the fifth sub-frequency domain resource.

[0336] Furthermore, the first subsequence in the M subsequences corresponds to the first sub-frequency domain resource in the M sub-frequency domain resources, the second subsequence in the M subsequences corresponds to the second sub-frequency domain resource in the M sub-frequency domain resources, the third subsequence in the M subsequences corresponds to the third sub-frequency domain resource in the M sub-frequency domain resources, the fourth subsequence in the M subsequences corresponds to the fourth sub-frequency domain resource in the M sub-frequency domain resources, and the fifth subsequence in the M subsequences corresponds to the fifth sub-frequency domain resource in the M sub-frequency domain resources. Specifically, when M=5, the third sequence may include the following forms:

[0337] In one implementation, the first subsequence among the M subsequences satisfies the first of the M relations, wherein the first relation is that the values ​​of the elements in the first subsequence are all first values. The second subsequence among the M subsequences satisfies the second of the M relations, wherein the second relation is that the values ​​of the elements in the second subsequence are all 1. The third subsequence among the M subsequences satisfies the third of the M relations, wherein the third relation is that the values ​​of the elements in the third subsequence are all second values. The fourth subsequence among the M subsequences satisfies the fourth of the M relations, wherein the fourth relation is that the values ​​of the elements in the fourth subsequence are all 1. The fifth subsequence among the M subsequences satisfies the fifth of the M relations, wherein the fifth relation is that the values ​​of the elements in the fifth subsequence are all third values.

[0338] Optionally, the first value and the third value are both greater than 1, and the second value is greater than 0 and less than or equal to 1.

[0339] Optionally, the first value is equal to the third value.

[0340] Optionally, the number of subcarriers included in the first subfrequency domain resource is equal to the number of subcarriers included in the fifth subfrequency domain resource, and / or the number of subcarriers included in the second subfrequency domain resource is equal to the number of subcarriers included in the fourth subfrequency domain resource.

[0341] For example, as shown in Figure 8, Figure 8 is a schematic diagram of another third sequence provided by an embodiment of the present application. The first frequency domain resource is divided into five continuous sub-frequency domain resources by the first frequency domain separation point A, the second frequency domain separation point B, the third frequency domain separation point C, and the fourth frequency domain separation point D. The frequency domain separation point can be represented by a subcarrier number, or by an RB number, or by an RBG number, and this application does not limit it. Among them, the first frequency domain separation point A is smaller than the second frequency domain separation point B, the second frequency domain separation point B is smaller than the third frequency domain separation point C, and the third frequency domain separation point C is smaller than the fourth frequency domain separation point D. The portion of the first frequency domain resource numbered less than the first frequency domain separation point A is called the first sub-frequency domain resource, the portion of the first frequency domain resource numbered greater than or equal to the first frequency domain separation point A and less than the second frequency domain separation point B is called the second sub-frequency domain resource, the portion of the first frequency domain resource numbered greater than or equal to the second frequency domain separation point B and less than the third frequency domain separation point C is called the third sub-frequency domain resource, the portion of the first frequency domain resource numbered greater than or equal to the third frequency domain separation point C and less than the fourth frequency domain separation point D is called the fourth sub-frequency domain resource, and the portion of the first frequency domain resource numbered greater than or equal to the fourth frequency domain separation point D is called the fifth sub-frequency domain resource.

[0342] The first subsequence corresponds to the first sub-frequency domain resource, and the first subsequence among the M subsequences satisfies the first of the M relationships, where the first relationship is that all elements in the first subsequence have a first value. The second subsequence corresponds to the second sub-frequency domain resource, and the second subsequence among the M subsequences satisfies the second of the M relationships, where the second relationship is that all elements in the second subsequence have a value of 1. The third subsequence corresponds to the third sub-frequency domain resource, and the third subsequence among the M subsequences satisfies the third of the M relationships, where the third relationship is that all elements in the first subsequence have a second value. The fourth subsequence corresponds to the fourth sub-frequency domain resource, and the fourth subsequence among the M subsequences satisfies the fourth of the M relationships, where the fourth relationship is that all elements in the fourth subsequence have a value of 1. The 5th subsequence corresponds to the 5th sub-frequency domain resource, the 5th subsequence among the M subsequences satisfies the 5th relationship among the M relationships, the values ​​of the elements in the 5th subsequence are all third values, the first value and the third value are both greater than 1, and the second value is less than 1.

[0343] In another implementation, the first subsequence among the M subsequences satisfies the first of the M relationships, where the first relationship is that the values ​​of the elements in the first subsequence are all first values. The second subsequence among the M subsequences satisfies the second of the M relationships, where the second relationship is that the values ​​of the elements in the second subsequence are all 1. The third subsequence among the M subsequences satisfies the third of the M relationships, where the values ​​of the elements in the third subsequence satisfy a polynomial function of the square of (k-(N-1) / 2). For an explanation of the polynomial function, refer to the previous description. k is the sequence number of the elements in the third subsequence within the third sequence. The fourth subsequence among the M subsequences satisfies the fourth of the M relationships, where the fourth relationship is that the values ​​of the elements in the fourth subsequence are all 1. The fifth subsequence among the M subsequences satisfies the fifth relationship among the M relationships, values ​​of elements in the fifth subsequence are all third values, and both the first value and the third value are greater than 1.

[0344] Optionally, the first value is equal to the third value.

[0345] Optionally, the number of subcarriers included in the first subfrequency domain resource is equal to the number of subcarriers included in the fifth subfrequency domain resource, and / or the number of subcarriers included in the second subfrequency domain resource is equal to the number of subcarriers included in the fourth subfrequency domain resource.

[0346] For example, as shown in Figure 9, Figure 9 is a schematic diagram of another third sequence provided by an embodiment of the present application. The first frequency domain resource is divided into five continuous sub-frequency domain resources by the first frequency domain separation point A, the second frequency domain separation point B, the third frequency domain separation point C, and the fourth frequency domain separation point D. The frequency domain separation point can be represented by a subcarrier number, or by an RB number, or by an RBG number, and this application does not limit it. Among them, the first frequency domain separation point A is smaller than the second frequency domain separation point B, the second frequency domain separation point B is smaller than the third frequency domain separation point C, and the third frequency domain separation point C is smaller than the fourth frequency domain separation point D. The portion of the first frequency domain resource numbered less than the first frequency domain separation point A is called the first sub-frequency domain resource, the portion of the first frequency domain resource numbered greater than or equal to the first frequency domain separation point A and less than the second frequency domain separation point B is called the second sub-frequency domain resource, the portion of the first frequency domain resource numbered greater than or equal to the second frequency domain separation point B and less than the third frequency domain separation point C is called the third sub-frequency domain resource, the portion of the first frequency domain resource numbered greater than or equal to the third frequency domain separation point C and less than the fourth frequency domain separation point D is called the fourth sub-frequency domain resource, and the portion of the first frequency domain resource numbered greater than or equal to the fourth frequency domain separation point D is called the fifth sub-frequency domain resource.

[0347] The first subsequence corresponds to the first sub-frequency domain resource, and the first subsequence satisfies the first relationship. The first relationship is that the values ​​of the elements in the first subsequence are all the first value. The second subsequence corresponds to the second sub-frequency domain resource, and the second subsequence satisfies the second relationship. The second relationship is that the values ​​of the elements in the first subsequence are all 1. The third subsequence corresponds to the third sub-frequency domain resource, and the third subsequence satisfies the third relationship. The third relationship is that the values ​​of the elements in the third subsequence satisfy a polynomial function of the square of (k-(N-1) / 2). The fourth subsequence corresponds to the fourth sub-frequency domain resource, and the fourth subsequence satisfies the fourth relationship. The fourth relationship is that the values ​​of the elements in the fourth subsequence are all 1. The fifth subsequence corresponds to the fifth sub-frequency domain resource, and the fifth subsequence satisfies the fifth relationship. The fifth relationship is that the values ​​of the elements in the fifth subsequence are all the third value. Both the first value and the third value are greater than 1.

[0348] The polynomial function of the square of (k-(N-1) / 2) is the functional relationship: The values ​​of the elements in the third subsequence satisfy Function relationship, k is the sequence number of the element in the third subsequence in the third sequence. That is, for the element with sequence number k in the third sequence and the element is in the second subsequence, the value of the element is Wherein, d0, d1 or d2 is a parameter, d0 is greater than 0, d1 is greater than or equal to 0, and d2 is greater than 0.

[0349] In another implementation, the first frequency domain resource is divided into five consecutive sub-frequency domain resources by a first frequency domain separation point A, a second frequency domain separation point B, a third frequency domain separation point C, and a fourth frequency domain separation point D. The frequency domain separation point can be represented by a subcarrier number, an RB number, or an RBG number, and this application does not limit this. Among them, the first frequency domain separation point A is smaller than the second frequency domain separation point B, the second frequency domain separation point B is smaller than the third frequency domain separation point C, and the third frequency domain separation point C is smaller than the fourth frequency domain separation point D. The portion of the first frequency domain resource numbered less than the first frequency domain separation point A is called the first sub-frequency domain resource, the portion of the first frequency domain resource numbered greater than or equal to the first frequency domain separation point A and less than the second frequency domain separation point B is called the second sub-frequency domain resource, the portion of the first frequency domain resource numbered greater than or equal to the second frequency domain separation point B and less than the third frequency domain separation point C is called the third sub-frequency domain resource, the portion of the first frequency domain resource numbered greater than or equal to the third frequency domain separation point C and less than the fourth frequency domain separation point D is called the fourth sub-frequency domain resource, and the portion of the first frequency domain resource numbered greater than or equal to the fourth frequency domain separation point D is called the fifth sub-frequency domain resource.

[0350] The first subsequence corresponds to the first sub-frequency domain resource, and the first subsequence among the M subsequences satisfies the first relationship among the M relationships, and the first relationship is that the values ​​of the elements in the first subsequence are all first values. The second subsequence corresponds to the second sub-frequency domain resource, and the second subsequence among the M subsequences satisfies the second relationship among the M relationships, and the second relationship is that the values ​​of the elements in the second subsequence are all 1. The third subsequence corresponds to the third sub-frequency domain resource, and the third subsequence among the M subsequences satisfies the third relationship among the M relationships, and the third relationship is that the values ​​of the elements in the third subsequence satisfy Functional relationship, where k is the sequence number of the element in the third subsequence in the third sequence, μ is less than 0, v is greater than 0, and s is greater than 0. The fourth subsequence corresponds to the fourth sub-frequency domain resource, the fourth subsequence among the M subsequences satisfies the fourth of the M relationships, and the fourth relationship is that the values ​​of the elements in the fourth subsequence are all 1. The fifth subsequence corresponds to the fifth sub-frequency domain resource, the fifth subsequence among the M subsequences satisfies the fifth of the M relationships, the values ​​of the elements in the fifth subsequence are all third values, and both the first value and the third value are greater than 1.

[0351] Optionally, the first value is equal to the third value.

[0352] Optionally, the number of subcarriers included in the first subfrequency domain resource is equal to the number of subcarriers included in the fifth subfrequency domain resource. And / or, the number of subcarriers included in the second subfrequency domain resource is equal to the number of subcarriers included in the fourth subfrequency domain resource.

[0353] It should be noted that the number M of sub-frequency domain resources contained in the first frequency domain resource or the number M of sub-sequences contained in the third sequence may also be equal to other values. When M is equal to other values, it is similar to the above-mentioned case where the number of sub-frequency domain resources or sub-sequences M=3 or M=5. As long as the third sequence is a segmented sequence, it is within the scope of protection of this application and will not be repeated here.

[0354] S202: The first network device sends the first signal.

[0355] S203: The first network device / the second network device / the second terminal device receives an echo signal.

[0356] The first signal may be a synaesthesia fusion signal or a communication-awareness fusion signal, and the first signal may be used for perception or communication. For example, the first signal is used for perception, or the first signal is used for perception and channel measurement, or the first signal is used for perception and channel estimation, or the first signal is used for perception and downlink data transmission. The first signal sent by the first network device generates an echo signal after being reflected by a target in the environment. The first network device, the second network device, or the second terminal device may receive the echo signal on the first frequency domain resource.

[0357] For example, if the first signal is a demodulation reference signal used for perception, then the signal is used for perception and channel estimation; for another example, if the first signal is a channel state information reference signal used for perception, then the signal is used for perception and channel measurement; for another example, if the first signal is a signal carried on a physical downlink shared channel (PDSCH) for perception, then the signal is used for perception and downlink data transmission.

[0358] In the scenario shown in Figure 1(a), a first network device transmits a first signal and receives an echo signal reflected by an object in the environment on a first frequency domain resource. The first network device can perceive information such as the location and speed of the object based on the first signal and the echo signal.

[0359] In the scenario shown in Figure 1(b), a first network device transmits a first signal, and a first terminal device receives the first signal. The first signal carries data or a reference signal sequence sent by the first network device to the first terminal device. The reference signal sequence can be used for channel measurement and estimation, thereby achieving the communication function of the first signal. Furthermore, the first network device transmits the first signal, and the second network device receives the echo signal of the first signal, thereby achieving the perception function of the first signal.

[0360] Optionally, the first network device may send first information to the second network device and / or the first terminal device, where the first information is used to indicate parameter information of the third sequence. The second network device receives the first information and determines the third sequence based on the parameter information indicated by the first information. The first terminal device receives the first information and determines the third sequence based on the parameter information indicated by the first information. Furthermore, the first terminal device may obtain the second sequence from the first signal based on the third sequence. Furthermore, the first terminal device may demodulate the first signal to obtain the first sequence, and then process the first sequence using the third sequence to obtain the second sequence.

[0361] The parameter information includes multiple sets of parameters for determining the third sequence. These parameters can be used to determine multiple relationships. For example, as shown in Table 1, the first set of parameters includes: the first value a1, the second value b1, and the third value c1 of the first set; the second set of parameters includes: the first value a2, the second value b2, and the third value c2 of the second set; and the third set of parameters includes: the first value a3, the second value b3, and the third value c3 of the third set. The fourth set of parameters includes: the first value a4, the second value b4, and the third value c4 of the fourth set. Alternatively, as shown in Table 2, the first set of parameters includes: the first value a1, the third value b1, d0=e1, d1=e2, and d2=e3 of the first set; the second set of parameters includes: the first value a2, the third value b2, d0=e4, d1=e5, and d2=e6 of the second set; and the third set of parameters includes: the first value a3, the third value b3, d0=e7, d1=e8, and d2=e9 of the third set. The fourth set of parameters includes: the fourth set of first value a4, third value b4, d0=e10, d1=e11, d2=e12. Each set of parameters can be used to determine the above M (M=3) relationships, and different values ​​in each set of parameters can determine different relationships.

[0362] Table 1

[0363] Table 2

[0364] The parameter information includes at least one of the following: the first value, the second value, the third value, the μ, the v, the s, and the M. Optionally, the parameter information may further include the number of subcarriers or the number of RBs occupied by each sub-frequency domain resource in the M sub-frequency domain resources. Alternatively, the parameter information may further include the number of subcarriers or the number of RBs occupied by the first sub-frequency domain resource in the M sub-frequency domain resources. Alternatively, the parameter information may further include a frequency domain separation point (e.g., a first frequency domain separation point A and a second frequency domain separation point B), etc.

[0365] For example, when M=3, the parameter information of the third sequence may include the following situations: the first frequency domain separation point A, the second frequency domain separation point B, the first value, the second value, the third value; or, the first frequency domain separation point A, the second frequency domain separation point B, the first value, the third value and parameters d0, d1, d2; or, the first frequency domain separation point A, the second frequency domain separation point B, the first value, the third value and parameters μ, v, s.

[0366] When M=5, the parameter information of the third sequence may include the following situations: the first frequency domain separation point A, the second frequency domain separation point B, the third frequency domain separation point C, the fourth frequency domain separation point D, the first value, the second value, the third value; or, the first frequency domain separation point A, the second frequency domain separation point B, the third frequency domain separation point C, the fourth frequency domain separation point D, the first value, the third value and parameters d0, d1, d2; or, the first frequency domain separation point A, the second frequency domain separation point B, the third frequency domain separation point C, the fourth frequency domain separation point D, the first value, the third value and parameters μ, v, s.

[0367] Optionally, the first information can be multiple bits, such as two bits or more than two bits. For example, as shown in Table 1, when the value of the first information is 00, it indicates that the first value a1, the second value b1, and the third value c1 of the first set are adopted. The values ​​of the elements in the first subsequence are all a1, the values ​​of the elements in the second subsequence are all b1, and the values ​​of the elements in the third subsequence are all c1. When the value of the first information is 01, it indicates that the first value a2, the second value b2, and the third value c2 of the second set are adopted, the values ​​of the elements in the first subsequence are all a2, the values ​​of the elements in the second subsequence are all b2, and the values ​​of the elements in the third subsequence are all c2. Other similar examples are not given here one by one.

[0368] Optionally, the parameter information may be predefined or notified by higher-layer signaling (e.g., RRC signaling). For example, as shown in Table 2, the predefined first set of parameters includes: the first value a1, the third value b1, d0=e1, d1=e2, and d2=e3 of the first set; the second set of parameters includes: the first value a2, the third value b2, d0=e4, d1=e5, and d2=e6 of the second set; and the third set of parameters includes: the first value a3, the third value b3, d0=e7, d1=e8, and d2=e9 of the third set. The fourth set of parameters includes: the first value a4, the third value b4, d0=e10, d1=e11, and d2=e12 of the fourth set. Multiple sets of parameters for the third sequence are notified via RRC signaling, and then the first information indicates that the third sequence adopts one or more of the multiple sets of parameters.

[0369] The first terminal device receives the first signal, demodulates the first signal to obtain the first sequence, and determines the third sequence based on the received first information. Then, the first sequence is processed according to the third sequence to obtain the second sequence, and the communication data or communication reference sequence carried by the second sequence is obtained to achieve communication between the first network device and the first terminal device. Optionally, the second network device can determine the third sequence based on the first information. When the first network device and the second network device already know the second sequence, different third sequences can be designed and multiplied with the second sequence to obtain the first sequence. Different first signals are generated through different first sequences for perception, thereby adapting to different perception performance requirements and enabling communication between the first network device and the first terminal device.

[0370] In the scenario shown in Figure 1(c), the first network device sends a first signal, and the second terminal device can receive the first signal on the first frequency domain resource, obtain the communication data or communication reference signal sequence sent by the first network device to the second terminal device, that is, use the first signal to communicate between the first network device and the second terminal device. The first signal carries the data or reference signal sequence sent by the first network device to the first terminal device, and the reference signal sequence can be used for channel measurement, channel estimation, etc. In addition, the second terminal device can also receive the echo signal generated by the reflection of the target in the environment, and estimate the position, speed and other parameters of the target in the environment based on the echo signal.

[0371] Optionally, the first network device may send first information to the second terminal device, where the first information is used to indicate parameter information of the third sequence. The parameter information includes at least one of the following: the first value, the second value, the third value, the μ, the v, the s, and the M. Optionally, the parameter information may also include the number of subcarriers or the number of RBs occupied by each sub-frequency domain resource in the M sub-frequency domain resources. Alternatively, the parameter information may also include the number of subcarriers or the number of RBs occupied by the first sub-frequency domain resource in the M sub-frequency domain resources. Alternatively, the parameter information may also include frequency domain separation points (such as frequency domain separation point A and frequency domain separation point B), etc. Similar to the above, it will not be explained here.

[0372] The second terminal device determines the third sequence based on the first information and processes the first signal based on the third sequence to obtain a second sequence. The communication data or communication reference sequence carried by the second sequence is then obtained to enable communication between the first network device and the second terminal device. Optionally, the second terminal device receives an echo signal of the first signal for perception. Different third sequences generate different first sequences, and thus different first signals. Since different first signals have different perception performance, the second terminal device can also achieve different perception performance when receiving the echo signal for perception processing.

[0373] In an embodiment of the present application, a synaesthesia fusion signal is generated by multiplying a second sequence carrying data by a segmented third sequence. By designing different third sequences, the generated synaesthesia fusion signal can have different properties to meet different perception and communication requirements. For example, when the third sequence is a concave sequence, the root mean square bandwidth of the synaesthesia fusion signal can be increased, thereby improving the ranging accuracy of the synaesthesia fusion signal. When the third sequence includes a convex subsequence, the peak-to-sidelobe ratio of the distance spectrum perceived using the synaesthesia fusion signal is lower, thereby reducing the probability of false alarms in perception.

[0374] It can be understood that in the above-mentioned method embodiments, the methods and operations implemented by the terminal device can also be implemented by components that can be used for the terminal device (such as chips or circuits), and the methods and operations implemented by the network device can also be implemented by components that can be used for the network device (such as chips or circuits).

[0375] In the embodiment of the present application, the terminal device or network device can be divided into functional modules according to the above method example. For example, each functional module can be divided corresponding to each function, or two or more functions can be integrated into one processing module. The above-mentioned integrated modules can be implemented in the form of hardware or in the form of software functional modules. It should be noted that the division of modules in the embodiment of the present application is schematic and is only a logical functional division. There may be other division methods in actual implementation. The following is an example of dividing each functional module corresponding to each function.

[0376] The method provided in the embodiment of the present application is described in detail above in conjunction with Figure 2. Below, the communication device provided in the embodiment of the present application is described in detail in conjunction with Figures 9 and 10. It should be understood that the description of the device embodiment corresponds to the description of the method embodiment. Therefore, for matters not described in detail, please refer to the method embodiment above. For the sake of brevity, it will not be repeated here.

[0377] Please refer to Figure 10, which is a schematic diagram of the structure of a communication device provided in an embodiment of the present application. The communication device may include a receiving module 1001, a processing module 1002, and a sending module 1003. The receiving module 1001 and the sending module 1003 can communicate with the outside world, and the processing module 1002 is used to perform processing, such as generating a first signal.

[0378] In one possible design, the communication device can implement steps or processes corresponding to those performed by the first network device or the second network device in the above method embodiments. For example, it can be the first network device or the second network device, or a chip or circuit configured in the first network device or the second network device. The receiving module 1001 and the sending module 1003 are used to perform the transmission and reception related operations of the first network device or the second network device in the above method embodiments, and the processing module 1002 is used to perform the processing related operations of the first network device or the second network device in the above method embodiments.

[0379] In one embodiment:

[0380] A processing module 1002 is configured to generate a first signal according to a first sequence, where the first sequence is a product of a second sequence and a third sequence;

[0381] The first sequence includes N first elements, the second sequence includes N second elements, the second sequence carries data, and the third sequence includes N third elements greater than or equal to 0;

[0382] The i-th element in the second sequence corresponds to the i-th subcarrier among N subcarriers in the first frequency domain resource, the i-th element in the third sequence corresponds to the i-th subcarrier in the first frequency domain resource, the i-th element in the first sequence is carried on the i-th subcarrier in the first frequency domain resource, N is an integer greater than 1, and i is an integer greater than or equal to 1 and less than or equal to N;

[0383] The first frequency domain resources include M non-overlapping sub-frequency domain resources, the third sequence includes M sub-sequences, a t-th sub-sequence in the M sub-sequences corresponds to a t-th sub-frequency domain resource in the M sub-frequency domain resources, the t-th sub-sequence in the M sub-sequences satisfies a t-th relationship among M relationships, M is an integer greater than or equal to 2 and less than or equal to N, and t is an integer greater than or equal to 1 and less than or equal to M;

[0384] The sending module 1003 is configured to send the first signal.

[0385] Optionally, the i-th element in the third sequence is equal to the N-i+1-th element in the third sequence.

[0386] Optionally, the values ​​of the elements of at least one subsequence in the M subsequences are all the same.

[0387] Optionally, M is equal to 3, a starting frequency of a t1th sub-frequency domain resource among the M sub-frequency domain resources is less than a starting frequency of a t2th sub-frequency domain resource among the M sub-frequency domain resources, t1 is an integer greater than or equal to 1 and less than M, t2 is an integer greater than 1 and less than or equal to M, and t1 is less than t2;

[0388] The first subsequence among the M subsequences satisfies the first relationship among the M relationships, and the first relationship is: the values ​​of the elements in the first subsequence are all first values;

[0389] The second subsequence among the M subsequences satisfies the second relationship among the M relationships, and the second relationship is:

[0390] The values ​​of the elements in the second subsequence are all the second value, or the values ​​of the elements in the second subsequence satisfy the polynomial function of the square of (k-(N-1) / 2), or the values ​​of the elements in the second subsequence satisfy Functional relationship, where k is the sequence number of the element in the second subsequence in the third sequence, μ is less than 0, v is greater than 0, and s is greater than 0;

[0391] The third subsequence among the M subsequences satisfies the third relationship among the M relationships, wherein the third relationship is that the values ​​of the elements in the third subsequence are all third values;

[0392] The first value and the third value are both greater than the second value.

[0393] Optionally, M is equal to 5, a starting frequency of a t1th sub-frequency domain resource among the M sub-frequency domain resources is less than a starting frequency of a t2th sub-frequency domain resource among the M sub-frequency domain resources, t1 is an integer greater than or equal to 1 and less than M, t2 is an integer greater than 1 and less than or equal to M, and t1 is less than t2;

[0394] The first subsequence among the M subsequences satisfies the first relationship among the M relationships, and the first relationship is: the values ​​of the elements in the first subsequence are all first values;

[0395] The second subsequence among the M subsequences satisfies the second relationship among the M relationships, and the second relationship is: the values ​​of the elements in the second subsequence are all 1;

[0396] The third subsequence among the M subsequences satisfies the third relationship among the M relationships, and the third relationship is:

[0397] The values ​​of the elements in the third subsequence are all the second value, or the values ​​of the elements in the third subsequence satisfy the polynomial function of the square of (k-(N-1) / 2), or the values ​​of the elements in the third subsequence satisfy Functional relationship, where k is the sequence number of the element in the third subsequence in the third sequence, μ is less than 0, v is greater than 0, and s is greater than 0;

[0398] The fourth subsequence among the M subsequences satisfies the fourth relationship among the M relationships, and the fourth relationship is: the values ​​of the elements in the fourth subsequence are all 1;

[0399] The fifth subsequence among the M subsequences satisfies the fifth relationship among the M relationships, and the fifth relationship is: the values ​​of the elements in the fifth subsequence are all the third value;

[0400] The first value and the third value are both greater than 1, and the second value is greater than 0 and less than or equal to 1.

[0401] Optionally, the kth element in the third sequence is less than or equal to the maximum value of the k1th element in the third sequence and the k2th element in the third sequence, the k, the k1 and the k2 are all integers greater than or equal to 1 and less than or equal to N, the k2 is greater than the k1, and the k is greater than or equal to the k1 and less than or equal to k2.

[0402] Optionally, the first subsequence among the M subsequences satisfies the first of the M relations, where the first relation is: the k1th element in the first subsequence is greater than or equal to the k2th element in the first subsequence. The second subsequence among the M subsequences satisfies the second of the M relations, where the second relation is: the kth element in the second subsequence is greater than or equal to the minimum of the k1th element in the second subsequence and the k2th element in the second subsequence. The third subsequence among the M subsequences satisfies the third of the M relations, where the k1th element in the third subsequence is less than or equal to the k2th element in the third subsequence. The k, k1, and k2 are all integers greater than or equal to 1 and less than or equal to N, the k2 is greater than the k1, and the k is greater than or equal to the k1 and less than or equal to k2. The first subsequence is a monotonically decreasing sequence, the second subsequence is a convex sequence, and the third subsequence is a monotonically increasing sequence.

[0403] Optionally, the sending module is also used to send first information to a second network device and / or terminal device, where the first information indicates parameter information of the third sequence, and the parameter information includes at least one of the following: the first value, the second value, the third value, the μ, the v, the s, and the M.

[0404] Optionally, the first signal is used for sensing, or the first signal is used for sensing and channel measurement, or the first signal is used for sensing and channel estimation, or the first signal is used for sensing and data transmission.

[0405] Optionally, the receiving module 1001 is configured to receive an echo signal of the first signal.

[0406] In another embodiment:

[0407] A receiving module 1001 is configured to receive an echo signal of a first signal, where the first signal is generated according to a first sequence, where the first sequence is a product of a second sequence and a third sequence;

[0408] The first sequence includes N first elements, the second sequence includes N second elements, the second sequence carries data, and the third sequence includes N third elements greater than or equal to 0.

[0409] The i-th element in the second sequence corresponds to the i-th subcarrier among N subcarriers in the first frequency domain resource, the i-th element in the third sequence corresponds to the i-th subcarrier in the first frequency domain resource, the i-th element in the first sequence is carried on the i-th subcarrier in the first frequency domain resource, N is an integer greater than 1, and i is an integer greater than or equal to 1 and less than or equal to N;

[0410] The first frequency domain resources include M non-overlapping sub-frequency domain resources, the third sequence includes M subsequences, the t-th subsequence in the M subsequences corresponds to the t-th sub-frequency domain resource in the M sub-frequency domain resources, the t-th subsequence in the M subsequences satisfies the t-th relationship among the M relationships, M is an integer greater than or equal to 2 and less than or equal to N, and t is an integer greater than or equal to 1 and less than or equal to M.

[0411] Optionally, the i-th element in the third sequence is equal to the N-i+1-th element in the third sequence.

[0412] Optionally, the values ​​of the elements of at least one subsequence in the M subsequences are all the same.

[0413] Optionally, M is equal to 3, a starting frequency of a t1th sub-frequency domain resource among the M sub-frequency domain resources is less than a starting frequency of a t2th sub-frequency domain resource among the M sub-frequency domain resources, t1 is an integer greater than or equal to 1 and less than M, t2 is an integer greater than 1 and less than or equal to M, and t1 is less than t2;

[0414] The first subsequence among the M subsequences satisfies the first relationship among the M relationships, and the first relationship is: the values ​​of the elements in the first subsequence are all first values;

[0415] The second subsequence among the M subsequences satisfies the second relationship among the M relationships, and the second relationship is:

[0416] The values ​​of the elements in the second subsequence are all the second value, or the values ​​of the elements in the second subsequence satisfy the polynomial function of the square of (k-(N-1) / 2), or the values ​​of the elements in the second subsequence satisfy Functional relationship, where k is the sequence number of the element in the second subsequence in the third sequence, μ is less than 0, v is greater than 0, and s is greater than 0;

[0417] The third subsequence among the M subsequences satisfies the third relationship among the M relationships, wherein the third relationship is that the values ​​of the elements in the third subsequence are all third values;

[0418] The first value and the third value are both greater than the second value.

[0419] Optionally, M is equal to 5, a starting frequency of a t1th sub-frequency domain resource among the M sub-frequency domain resources is less than a starting frequency of a t2th sub-frequency domain resource among the M sub-frequency domain resources, t1 is an integer greater than or equal to 1 and less than M, t2 is an integer greater than 1 and less than or equal to M, and t1 is less than t2;

[0420] The first subsequence among the M subsequences satisfies the first relationship among the M relationships, and the first relationship is: the values ​​of the elements in the first subsequence are all first values;

[0421] The second subsequence among the M subsequences satisfies the second relationship among the M relationships, and the second relationship is: the values ​​of the elements in the second subsequence are all 1;

[0422] The third subsequence among the M subsequences satisfies the third relationship among the M relationships, and the third relationship is:

[0423] The values ​​of the elements in the third subsequence are all the second value, or the values ​​of the elements in the third subsequence satisfy the polynomial function of the square of (k-(N-1) / 2), or the values ​​of the elements in the third subsequence satisfy Functional relationship, where k is the sequence number of the element in the third subsequence in the third sequence, μ is less than 0, v is greater than 0, and s is greater than 0;

[0424] The fourth subsequence among the M subsequences satisfies the fourth relationship among the M relationships, and the fourth relationship is: the values ​​of the elements in the fourth subsequence are all 1;

[0425] The fifth subsequence among the M subsequences satisfies the fifth relationship among the M relationships, and the fifth relationship is: the values ​​of the elements in the fifth subsequence are all the third value;

[0426] The first value and the third value are both greater than 1, and the second value is greater than 0 and less than or equal to 1.

[0427] Optionally, the kth element in the third sequence is less than or equal to the maximum value of the k1th element in the third sequence and the k2th element in the third sequence, the k, the k1 and the k2 are all integers greater than or equal to 1 and less than or equal to N, the k2 is greater than the k1, and the k is greater than or equal to the k1 and less than or equal to k2.

[0428] Optionally, the first subsequence among the M subsequences satisfies the first of the M relations, where the first relation is: the k1th element in the first subsequence is greater than or equal to the k2th element in the first subsequence. The second subsequence among the M subsequences satisfies the second of the M relations, where the second relation is: the kth element in the second subsequence is greater than or equal to the minimum of the k1th element in the second subsequence and the k2th element in the second subsequence. The third subsequence among the M subsequences satisfies the third of the M relations, where the k1th element in the third subsequence is less than or equal to the k2th element in the third subsequence. The k, k1, and k2 are all integers greater than or equal to 1 and less than or equal to N, the k2 is greater than the k1, and the k is greater than or equal to the k1 and less than or equal to k2. The first subsequence is a monotonically decreasing sequence, the second subsequence is a convex sequence, and the third subsequence is a monotonically increasing sequence.

[0429] Optionally, the receiving module 1001 is also used to receive first information sent by the first network device, where the first information is used to indicate parameter information of the third sequence, and the parameter information includes at least one of the following: the first value, the second value, the third value, the μ, the v, the s and the M.

[0430] Optionally, the first signal is used for sensing, or the first signal is used for sensing and channel measurement, or the first signal is used for sensing and channel estimation, or the first signal is used for sensing and data transmission.

[0431] It should be noted that the implementation of each module may also correspond to the corresponding description of the method embodiment shown in FIG2 , and execute the method and function executed by the first network device or the second network device in the above embodiment.

[0432] Please refer to Figure 11, which is a schematic diagram of the structure of another communication device provided in an embodiment of the present application. The communication device may include a receiving module 1101 and a processing module 1102. The receiving module 1101 can communicate with the outside world, and the processing module 1102 is used to perform processing, such as demodulating a first signal.

[0433] In one possible design, the communication device can implement steps or processes corresponding to those performed by the first terminal device or the second terminal device in the above method embodiment. For example, it can be the first terminal device or the second terminal device, or a chip or circuit configured in the first terminal device or the second terminal device. The receiving module 1101 is used to perform the transmission and reception related operations of the first terminal device or the second terminal device in the above method embodiment, and the processing module 1102 is used to perform the processing related operations of the first terminal device or the second terminal device in the above method embodiment.

[0434] In one embodiment:

[0435] The receiving module 1101 is configured to receive a first signal, where the first signal is generated according to a first sequence, where the first sequence is the product of a second sequence and a third sequence.

[0436] The first sequence includes N first elements, the second sequence includes N second elements, the second sequence carries data, and the third sequence includes N third elements greater than or equal to 0.

[0437] The i-th element in the second sequence corresponds to the i-th subcarrier among N subcarriers in the first frequency domain resource, the i-th element in the third sequence corresponds to the i-th subcarrier in the first frequency domain resource, the i-th element in the first sequence is carried on the i-th subcarrier in the first frequency domain resource, N is an integer greater than 1, and i is an integer greater than or equal to 1 and less than or equal to N;

[0438] The first frequency domain resources include M non-overlapping sub-frequency domain resources, the third sequence includes M subsequences, the t-th subsequence in the M subsequences corresponds to the t-th sub-frequency domain resource in the M sub-frequency domain resources, the t-th subsequence in the M subsequences satisfies the t-th relationship among the M relationships, M is an integer greater than or equal to 2 and less than or equal to N, and t is an integer greater than or equal to 1 and less than or equal to M.

[0439] Optionally, the i-th element in the third sequence is equal to the N-i+1-th element in the third sequence.

[0440] Optionally, the values ​​of the elements of at least one subsequence in the M subsequences are all the same.

[0441] Optionally, M is equal to 3, a starting frequency of a t1th sub-frequency domain resource among the M sub-frequency domain resources is less than a starting frequency of a t2th sub-frequency domain resource among the M sub-frequency domain resources, t1 is an integer greater than or equal to 1 and less than M, t2 is an integer greater than 1 and less than or equal to M, and t1 is less than t2;

[0442] The first subsequence among the M subsequences satisfies the first relationship among the M relationships, and the first relationship is: the values ​​of the elements in the first subsequence are all first values;

[0443] The second subsequence among the M subsequences satisfies the second relationship among the M relationships, and the second relationship is:

[0444] The values ​​of the elements in the second subsequence are all the second value, or the values ​​of the elements in the second subsequence satisfy the polynomial function of the square of (k-(N-1) / 2), or the values ​​of the elements in the second subsequence satisfy Functional relationship, where k is the sequence number of the element in the second subsequence in the third sequence, μ is less than 0, v is greater than 0, and s is greater than 0;

[0445] The third subsequence among the M subsequences satisfies the third relationship among the M relationships, wherein the third relationship is that the values ​​of the elements in the third subsequence are all third values;

[0446] The first value and the third value are both greater than the second value.

[0447] Optionally, M is equal to 5, a starting frequency of a t1th sub-frequency domain resource among the M sub-frequency domain resources is less than a starting frequency of a t2th sub-frequency domain resource among the M sub-frequency domain resources, t1 is an integer greater than or equal to 1 and less than M, t2 is an integer greater than 1 and less than or equal to M, and t1 is less than t2;

[0448] The first subsequence among the M subsequences satisfies the first relationship among the M relationships, and the first relationship is: the values ​​of the elements in the first subsequence are all first values;

[0449] The second subsequence among the M subsequences satisfies the second relationship among the M relationships, and the second relationship is: the values ​​of the elements in the second subsequence are all 1;

[0450] The third subsequence among the M subsequences satisfies the third relationship among the M relationships, and the third relationship is:

[0451] The values ​​of the elements in the third subsequence are all the second value, or the values ​​of the elements in the third subsequence satisfy the polynomial function of the square of (k-(N-1) / 2), or the values ​​of the elements in the third subsequence satisfy Functional relationship, where k is the sequence number of the element in the third subsequence in the third sequence, μ is less than 0, v is greater than 0, and s is greater than 0;

[0452] The fourth subsequence among the M subsequences satisfies the fourth relationship among the M relationships, and the fourth relationship is: the values ​​of the elements in the fourth subsequence are all 1;

[0453] The fifth subsequence among the M subsequences satisfies the fifth relationship among the M relationships, and the fifth relationship is: the values ​​of the elements in the fifth subsequence are all the third value;

[0454] The first value and the third value are both greater than 1, and the second value is greater than 0 and less than or equal to 1.

[0455] Optionally, the kth element in the third sequence is less than or equal to the maximum value of the k1th element in the third sequence and the k2th element in the third sequence, the k, the k1 and the k2 are all integers greater than or equal to 1 and less than or equal to N, the k2 is greater than the k1, and the k is greater than or equal to the k1 and less than or equal to k2.

[0456] Optionally, the first subsequence among the M subsequences satisfies the first of the M relations, where the first relation is: the k1th element in the first subsequence is greater than or equal to the k2th element in the first subsequence. The second subsequence among the M subsequences satisfies the second of the M relations, where the second relation is: the kth element in the second subsequence is greater than or equal to the minimum of the k1th element in the second subsequence and the k2th element in the second subsequence. The third subsequence among the M subsequences satisfies the third of the M relations, where the k1th element in the third subsequence is less than or equal to the k2th element in the third subsequence. The k, k1, and k2 are all integers greater than or equal to 1 and less than or equal to N, the k2 is greater than the k1, and the k is greater than or equal to the k1 and less than or equal to k2. The first subsequence is a monotonically decreasing sequence, the second subsequence is a convex sequence, and the third subsequence is a monotonically increasing sequence.

[0457] Optionally, the receiving module 1101 is further configured to receive first information sent by a first network device, where the first information is used to indicate parameter information of the third sequence, where the parameter information includes at least one of the following: the first value, the second value, the third value, μ, v, s, and M;

[0458] The processing module 1102 is configured to obtain the second sequence from the first signal based on the first information.

[0459] In another embodiment:

[0460] A receiving module 1101 is configured to receive an echo signal of a first signal, where the first signal is generated according to a first sequence, where the first sequence is a product of a second sequence and a third sequence;

[0461] The first sequence includes N first elements, the second sequence includes N second elements, the second sequence carries data, and the third sequence includes N third elements greater than or equal to 0.

[0462] The i-th element in the second sequence corresponds to the i-th subcarrier among N subcarriers in the first frequency domain resource, the i-th element in the third sequence corresponds to the i-th subcarrier in the first frequency domain resource, the i-th element in the first sequence is carried on the i-th subcarrier in the first frequency domain resource, N is an integer greater than 1, and i is an integer greater than or equal to 1 and less than or equal to N;

[0463] The first frequency domain resources include M non-overlapping sub-frequency domain resources, the third sequence includes M subsequences, the t-th subsequence in the M subsequences corresponds to the t-th sub-frequency domain resource in the M sub-frequency domain resources, the t-th subsequence in the M subsequences satisfies the t-th relationship among the M relationships, M is an integer greater than or equal to 2 and less than or equal to N, and t is an integer greater than or equal to 1 and less than or equal to M.

[0464] Optionally, the i-th element in the third sequence is equal to the N-i+1-th element in the third sequence.

[0465] Optionally, the values ​​of the elements of at least one subsequence in the M subsequences are all the same.

[0466] Optionally, M is equal to 3, a starting frequency of a t1th sub-frequency domain resource among the M sub-frequency domain resources is less than a starting frequency of a t2th sub-frequency domain resource among the M sub-frequency domain resources, t1 is an integer greater than or equal to 1 and less than M, t2 is an integer greater than 1 and less than or equal to M, and t1 is less than t2;

[0467] The first subsequence among the M subsequences satisfies the first relationship among the M relationships, and the first relationship is: the values ​​of the elements in the first subsequence are all first values;

[0468] The second subsequence among the M subsequences satisfies the second relationship among the M relationships, and the second relationship is:

[0469] The values ​​of the elements in the second subsequence are all the second value, or the values ​​of the elements in the second subsequence satisfy the polynomial function of the square of (k-(N-1) / 2), or the values ​​of the elements in the second subsequence satisfy Functional relationship, where k is the sequence number of the element in the second subsequence in the third sequence, μ is less than 0, v is greater than 0, and s is greater than 0;

[0470] The third subsequence among the M subsequences satisfies the third relationship among the M relationships, wherein the third relationship is that the values ​​of the elements in the third subsequence are all third values;

[0471] The first value and the third value are both greater than the second value.

[0472] Optionally, M is equal to 5, a starting frequency of a t1th sub-frequency domain resource among the M sub-frequency domain resources is less than a starting frequency of a t2th sub-frequency domain resource among the M sub-frequency domain resources, t1 is an integer greater than or equal to 1 and less than M, t2 is an integer greater than 1 and less than or equal to M, and t1 is less than t2;

[0473] The first subsequence among the M subsequences satisfies the first relationship among the M relationships, and the first relationship is: the values ​​of the elements in the first subsequence are all first values;

[0474] The second subsequence among the M subsequences satisfies the second relationship among the M relationships, and the second relationship is: the values ​​of the elements in the second subsequence are all 1;

[0475] The third subsequence among the M subsequences satisfies the third relationship among the M relationships, and the third relationship is:

[0476] The values ​​of the elements in the third subsequence are all the second value, or the values ​​of the elements in the third subsequence satisfy the polynomial function of the square of (k-(N-1) / 2), or the values ​​of the elements in the third subsequence satisfy Functional relationship, where k is the sequence number of the element in the third subsequence in the third sequence, μ is less than 0, v is greater than 0, and s is greater than 0;

[0477] The fourth subsequence among the M subsequences satisfies the fourth relationship among the M relationships, and the fourth relationship is: the values ​​of the elements in the fourth subsequence are all 1;

[0478] The fifth subsequence among the M subsequences satisfies the fifth relationship among the M relationships, and the fifth relationship is: the values ​​of the elements in the fifth subsequence are all the third value;

[0479] The first value and the third value are both greater than 1, and the second value is greater than 0 and less than or equal to 1.

[0480] Optionally, the kth element in the third sequence is less than or equal to the maximum value of the k1th element in the third sequence and the k2th element in the third sequence, the k, the k1 and the k2 are all integers greater than or equal to 1 and less than or equal to N, the k2 is greater than the k1, and the k is greater than or equal to the k1 and less than or equal to k2.

[0481] Optionally, the first subsequence among the M subsequences satisfies the first of the M relations, where the first relation is: the k1th element in the first subsequence is greater than or equal to the k2th element in the first subsequence. The second subsequence among the M subsequences satisfies the second of the M relations, where the second relation is: the kth element in the second subsequence is greater than or equal to the minimum of the k1th element in the second subsequence and the k2th element in the second subsequence. The third subsequence among the M subsequences satisfies the third of the M relations, where the k1th element in the third subsequence is less than or equal to the k2th element in the third subsequence. The k, k1, and k2 are all integers greater than or equal to 1 and less than or equal to N, the k2 is greater than the k1, and the k is greater than or equal to the k1 and less than or equal to k2. The first subsequence is a monotonically decreasing sequence, the second subsequence is a convex sequence, and the third subsequence is a monotonically increasing sequence.

[0482] Optionally, the receiving module 1101 is also used to receive first information sent by the first network device, where the first information is used to indicate parameter information of the third sequence, and the parameter information includes at least one of the following: the first value, the second value, the third value, the μ, the v, the s and the M.

[0483] Optionally, the first signal is used for sensing, or the first signal is used for sensing and channel measurement, or the first signal is used for sensing and channel estimation, or the first signal is used for sensing and data transmission.

[0484] It should be noted that the implementation of each module may also correspond to the corresponding description of the method embodiment shown in FIG2 , and execute the method and functions executed by the first terminal device or the second terminal device in the above embodiment.

[0485] Figure 12 is a schematic diagram of the structure of a network device provided in an embodiment of the present application. The network device can be used in the systems shown in Figures 1(a), 1(b), and 1(c) to perform the functions of the network device in the above method embodiments, or to implement the steps or processes performed by the network device in the above method embodiments.

[0486] As shown in Figure 12, the network device includes a processor 1201 and a transceiver 1202. Optionally, the network device also includes a memory 1203. The processor 1201, transceiver 1202, and memory 1203 can communicate with each other via internal connection paths to transmit control and / or data signals. The memory 1203 is used to store computer programs, and the processor 1201 is used to call and execute the computer programs from the memory 1203 to control the transceiver 1202 to transmit and receive signals. Optionally, the network device may also include an antenna for transmitting uplink data or uplink control signaling output by the transceiver 1202 via wireless signals.

[0487] The processor 1201 and the memory 1203 may be combined into a processing device, and the processor 1201 is configured to execute program code stored in the memory 1203 to implement the aforementioned functions. In a specific implementation, the memory 1203 may also be integrated into the processor 1201 or independent of the processor 1201. The processor 1201 may correspond to the processing module in FIG10 .

[0488] The transceiver 1202 may correspond to the receiving module and transmitting module in FIG10 , and may also be referred to as a transceiver unit or transceiver module. The transceiver 1202 may include a receiver (or receiver, receiving circuit) and a transmitter (or transmitter, transmitting circuit). The receiver is used to receive signals, and the transmitter is used to transmit signals.

[0489] It should be understood that the network device shown in FIG12 is capable of implementing each process related to the network device in the method embodiment shown in FIG2 . The operations and / or functions of each module in the network device are respectively for implementing the corresponding processes in the above method embodiment. For details, please refer to the description of the above method embodiment. To avoid repetition, detailed description is omitted here.

[0490] The processor 1201 can be used to execute the actions implemented within the network device described in the previous method embodiments, while the transceiver 1202 can be used to execute the actions of the network device sending to or receiving from the network device described in the previous method embodiments. For details, please refer to the description of the previous method embodiments and will not be repeated here.

[0491] The processor 1201 may be a central processing unit (CPU), a general-purpose processor (GPOR), a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a field-programmable gate array (FPGA), or other programmable logic device (PLD), a transistor logic device (TLD), a hardware component, or any combination thereof. It may implement or execute the various exemplary logic blocks, modules, and circuits described in conjunction with the disclosure of this application. The processor 1201 may also be a combination that implements computing functions, such as a combination of one or more microprocessors, a combination of a DSP and a microprocessor, and so on. The communication bus 1204 may be a Peripheral Component Interconnect (PCI) bus or an Extended Industrial Standard Architecture (EISA) bus. These buses may be categorized as address buses, data buses, control buses, and so on. For ease of illustration, FIG12 shows only one bold line, but this does not imply that there is only one bus or type of bus. The communication bus 1204 is used to facilitate communication between these components. In the embodiment of this application, the transceiver 1202 is used to communicate signaling or data with other node devices. The memory 1203 may include volatile memory, such as nonvolatile dynamic random access memory (NVRAM), phase change random access memory (PRAM), magnetoresistive random access memory (MRAM), etc. It may also include non-volatile memory, such as at least one disk storage device, electrically erasable programmable read-only memory (EEPROM), flash memory devices, such as NOR flash memory or NAND flash memory, semiconductor devices, such as solid state disks (SSDs), etc. The memory 1203 may optionally be at least one storage device located away from the aforementioned processor 1201. The memory 1203 may optionally also store a set of computer program code or configuration information. Optionally, the processor 1201 may also execute the program stored in the memory 1203. The processor may cooperate with the memory and the transceiver to execute any of the methods and functions of the network device in the above-mentioned application embodiments.

[0492] Figure 13 is a schematic diagram of the structure of a terminal device provided in an embodiment of the present application. The terminal device can be used in the system shown in Figures 1(a), 1(b), and 1(c) to perform the functions of the terminal device in the above method embodiment, or to implement the steps or processes performed by the terminal device in the above method embodiment.

[0493] As shown in Figure 13, the terminal device includes a processor 1301 and a transceiver 1302. Optionally, the terminal device also includes a memory 1303. The processor 1301, transceiver 1302, and memory 1303 can communicate with each other via internal connection paths to transmit control and / or data signals. The memory 1303 is used to store computer programs, and the processor 1301 is used to call and execute the computer programs from the memory 1303 to control the transceiver 1302 to transmit and receive signals. Optionally, the terminal device may also include an antenna for transmitting uplink data or uplink control signaling output by the transceiver 1302 via wireless signals.

[0494] The processor 1301 and the memory 1303 may be combined into a processing device, and the processor 1301 is configured to execute program code stored in the memory 1303 to implement the aforementioned functions. In a specific implementation, the memory 1303 may also be integrated into the processor 1301 or independent of the processor 1301. The processor 1301 may correspond to the processing module in FIG11 .

[0495] The transceiver 1302 may correspond to the receiving module in FIG11 and may also be referred to as a transceiver unit or transceiver module. The transceiver 1302 may include a receiver (or receiver, receiving circuit) and a transmitter (or transmitter, transmitting circuit). The receiver is used to receive signals, and the transmitter is used to transmit signals.

[0496] It should be understood that the terminal device shown in FIG13 is capable of implementing the various processes involved in the terminal device in the method embodiment shown in FIG2 . The operations and / or functions of the various modules in the terminal device are respectively for implementing the corresponding processes in the above method embodiment. For details, please refer to the description of the above method embodiment. To avoid repetition, detailed description is omitted here.

[0497] The processor 1301 can be used to perform the actions implemented within the terminal device described in the previous method embodiments, while the transceiver 1302 can be used to perform the actions of the terminal device sending to or receiving from the terminal device described in the previous method embodiments. For details, please refer to the description of the previous method embodiments, which will not be repeated here.

[0498] The processor 1301 can be any of the aforementioned types of processors. The communication bus 1304 can be a PCI bus or an EISA bus, for example. These buses can be divided into address buses, data buses, and control buses. For ease of illustration, Figure 13 shows only one thick line, but this does not imply that there is only one bus or one type of bus. The communication bus 1304 is used to enable communication between these components. The transceiver 1302 of the device in the embodiments of the present application is used to communicate signaling or data with other devices. The memory 1303 can be any of the aforementioned types of memory. The memory 1303 can optionally be at least one storage device located remotely from the processor 1301. The memory 1303 stores a set of computer program code or configuration information, and the processor 1301 executes the program in the memory 1303. The processor can cooperate with the memory and transceiver to perform any of the methods and functions of the terminal device in the aforementioned embodiments.

[0499] An embodiment of the present application also provides a chip system, which includes a processor for supporting a terminal device or an access network device to implement the functions involved in any of the above embodiments, such as generating or processing the first signal involved in the above method. In one possible design, the chip system may also include a memory, which is used for the necessary program instructions and data for the terminal device or access network device. The chip system can be composed of a chip, or it can include a chip and other discrete devices. Among them, the input and output of the chip system correspond to the receiving and sending operations of the terminal device or access network device in the method embodiment, respectively.

[0500] The present application also provides a processing device, including a processor and an interface. The processor can be used to execute the method in the above method embodiment.

[0501] It should be understood that the processing device may be a chip. For example, the processing device may be a field programmable gate array (FPGA), an application specific integrated circuit (ASIC), a system on chip (SoC), a central processor unit (CPU), a network processor (NP), a digital signal processor (DSP), a microcontroller unit (MCU), a programmable logic device (PLD), or other integrated chips.

[0502] During implementation, each step of the above method can be completed by an integrated logic circuit of the hardware in the processor or by instructions in the form of software. The steps of the method disclosed in conjunction with the embodiments of the present application can be directly embodied as being executed by a hardware processor, or can be executed by a combination of hardware and software modules in the processor. The software module can be located in a storage medium mature in the art such as a random access memory, a flash memory, a read-only memory, a programmable read-only memory or an electrically erasable programmable memory, a register, etc. The storage medium is located in the memory, and the processor reads the information in the memory and completes the steps of the above method in conjunction with its hardware. To avoid repetition, it will not be described in detail here.

[0503] It should be noted that the processor in the embodiments of the present application can be an integrated circuit chip with signal processing capabilities. During implementation, each step of the above method embodiment can be completed by hardware integrated logic circuits in the processor or by software instructions. The above processor can be a general-purpose processor, a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a field-programmable gate array (FPGA), or other programmable logic devices, discrete gate or transistor logic devices, or discrete hardware components. The various methods, steps, and logic block diagrams disclosed in the embodiments of the present application can be implemented or executed. The general-purpose processor can be a microprocessor or any conventional processor. The steps of the method disclosed in the embodiments of the present application can be directly implemented and executed by a hardware decoding processor, or by a combination of hardware and software modules in the decoding processor. The software module can be located in a storage medium mature in the art, such as random access memory, flash memory, read-only memory, programmable read-only memory, electrically erasable programmable memory, registers, etc. The storage medium is located in the memory, and the processor reads the information in the memory and, in conjunction with its hardware, completes the steps of the above method.

[0504] According to the method provided in the embodiments of the present application, the present application also provides a computer program product, which includes: a computer program, which, when running on a computer, enables the computer to execute the method of any one of the embodiments shown in Figure 2.

[0505] According to the method provided in the embodiments of the present application, the present application also provides a computer-readable medium, which stores a computer program. When the computer program runs on a computer, the computer executes the method of any one of the embodiments shown in Figure 2.

[0506] According to the method provided in the embodiment of the present application, the present application also provides a communication system, which includes one or more terminal devices and one or more access network devices as mentioned above.

[0507] In the above embodiments, all or part of the embodiments may be implemented by 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. The computer program product includes one or more computer instructions. When the computer instructions are loaded and executed on a computer, all or part of the processes or functions described in the embodiments of the present application are generated. The computer may be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. The computer instructions may be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another computer-readable storage medium. For example, the computer instructions may be transmitted from one website, computer, server, or data center to another website, computer, server, or data center via a wired (e.g., coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) method. The computer-readable storage medium may be any available medium that a computer can access or a data storage device such as a server or data center that includes one or more available media integrated therein. The available medium may be a magnetic medium (eg, a floppy disk, a hard disk, a magnetic tape), an optical medium (eg, a high-density digital video disc (DVD)), or a semiconductor medium (eg, a solid state disc (SSD)).

[0508] The access network devices in the above-described apparatus embodiments correspond to the access network devices or terminal devices in the terminal devices and method embodiments, and the corresponding modules or units perform the corresponding steps. For example, the receiving module and the transmitting module (transceiver) perform the receiving or transmitting steps in the method embodiments, while other steps besides transmitting and receiving can be performed by the processing module (processor). The functions of the specific modules can be referred to in the corresponding method embodiments. There can be one or more processors.

[0509] As used in this specification, the terms "component," "module," "system," and the like are used to refer to computer-related entities, hardware, firmware, a combination of hardware and software, software, or software in execution. For example, a component can be, but is not limited to, a process running on a processor, a processor, an object, an executable file, an execution thread, a program, and / or a computer. By way of illustration, both an application running on a computing device and a computing device can be a component. One or more components can reside in a process and / or an execution thread, and a component can be located on one computer and / or distributed between two or more computers. In addition, these components can be executed from various computer-readable media having various data structures stored thereon. Components can communicate, for example, via local and / or remote processes based on signals having one or more data packets (e.g., data from two components interacting with another component across a local system, a distributed system, and / or a network, such as the Internet interacting with other systems via signals).

[0510] Those skilled in the art will appreciate that the various illustrative logical blocks and steps described in conjunction with the embodiments disclosed herein can be implemented using electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are implemented in hardware or software depends on the specific application and design constraints of the technical solution. Professionals and technicians may use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of this application.

[0511] Those skilled in the art will clearly understand that, for the convenience and brevity of description, the specific working processes of the systems, devices and units described above can refer to the corresponding processes in the aforementioned method embodiments and will not be repeated here.

[0512] In the several embodiments provided in this application, it should be understood that the disclosed systems, devices and methods can be implemented in other ways. For example, the device embodiments described above are merely schematic. For example, the division of the units is merely a logical function division. In actual implementation, there may be other division methods, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.

[0513] The units described as separate components may or may not be physically separate, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed across multiple network units. Some or all of these units may be selected to achieve the purpose of this embodiment according to actual needs.

[0514] In addition, each functional module in each embodiment of the present application may be integrated into one processing module, or each module may exist physically separately, or two or more modules may be integrated into one module.

[0515] If the functions are implemented in the form of software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application, or the part that contributes to the prior art, or the part of the technical solution, can be embodied in the form of a software product. The computer software product is stored in a storage medium and includes several instructions for enabling a computer device (which can be a personal computer, a server, or an access network device, etc.) to execute all or part of the steps of the method described in each embodiment of the present application. The aforementioned storage medium includes various media that can store program codes, such as a USB flash drive, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk.

[0516] The above description is merely a specific embodiment of the present application, but the scope of protection of the present application is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in this application should be included in the scope of protection of this application. Therefore, the scope of protection of this application should be based on the scope of protection of the claims.

Claims

1. A communication method, characterized in that: The method comprises: The first network device generates a first signal according to a first sequence, where the first sequence is a product of the second sequence and the third sequence; The first sequence includes N first elements, the second sequence includes N second elements, the second sequence carries data, and the third sequence includes N third elements greater than or equal to 0; The i-th element in the second sequence corresponds to the i-th subcarrier among N subcarriers in the first frequency domain resource, the i-th element in the third sequence corresponds to the i-th subcarrier in the first frequency domain resource, the i-th element in the first sequence is carried on the i-th subcarrier in the first frequency domain resource, N is an integer greater than 1, and i is an integer greater than or equal to 1 and less than or equal to N; The first frequency domain resources include M non-overlapping sub-frequency domain resources, the third sequence includes M sub-sequences, a t-th sub-sequence among the M sub-sequences corresponds to a t-th sub-frequency domain resource among the M sub-frequency domain resources, the t-th sub-sequence among the M sub-sequences satisfies a t-th relationship among M relationships, M is an integer greater than or equal to 2 and less than or equal to N, and t is an integer greater than or equal to 1 and less than or equal to M; The first network device sends the first signal.

2. The method according to claim 1, characterized in that The i-th element in the third sequence is equal to the N-i+1-th element in the third sequence.

3. The method according to claim 1 or 2, characterized in that The values ​​of elements of at least one subsequence in the M subsequences are all the same.

4. The method according to any one of claims 1 to 3, characterized in that: The M is equal to 3, the starting frequency of the t1th sub-frequency domain resource among the M sub-frequency domain resources is less than the starting frequency of the t2th sub-frequency domain resource among the M sub-frequency domain resources, the t1 is an integer greater than or equal to 1 and less than M, the t2 is an integer greater than 1 and less than or equal to M, and the t1 is less than the t2; The first subsequence of the M subsequences satisfies the first relation of the M relations, and the first relation is: the values ​​of the elements in the first subsequence are all first values; The second subsequence among the M subsequences satisfies the second relation among the M relations, and the second relation is: The values ​​of the elements in the second subsequence are all the second value, or the values ​​of the elements in the second subsequence satisfy the polynomial function of the square of (k-(N-1) / 2), or the values ​​of the elements in the second subsequence satisfy Functional relationship, where k is the sequence number of the element in the second subsequence in the third sequence, μ is less than 0, v is greater than 0, and s is greater than 0; The third subsequence among the M subsequences satisfies the third relationship among the M relationships, and the third relationship is: the values ​​of the elements in the third subsequence are all third values; The first value and the third value are both greater than the second value.

5. The method according to any one of claims 1 to 3, characterized in that: The M is equal to 5, the starting frequency of the t1th sub-frequency domain resource among the M sub-frequency domain resources is less than the starting frequency of the t2th sub-frequency domain resource among the M sub-frequency domain resources, the t1 is an integer greater than or equal to 1 and less than M, the t2 is an integer greater than 1 and less than or equal to M, and the t1 is less than the t2; The first subsequence of the M subsequences satisfies the first relation of the M relations, and the first relation is: the values ​​of the elements in the first subsequence are all first values; The second subsequence of the M subsequences satisfies the second relation of the M relations, and the second relation is: the values ​​of the elements in the second subsequence are all 1; The third subsequence among the M subsequences satisfies the third relationship among the M relationships, and the third relationship is: The values ​​of the elements in the third subsequence are all the second value, or the values ​​of the elements in the third subsequence satisfy (k-(N-1) / 2) A squared polynomial function, or the values ​​of the elements in the third subsequence satisfy Functional relationship, where k is the sequence number of the element in the third subsequence in the third sequence, μ is less than 0, v is greater than 0, and s is greater than 0; The fourth subsequence of the M subsequences satisfies the fourth relationship of the M relationships, and the fourth relationship is: the values ​​of the elements in the fourth subsequence are all 1; The fifth subsequence among the M subsequences satisfies the fifth relationship among the M relationships, and the fifth relationship is: the values ​​of the elements in the fifth subsequence are all the third value; The first value and the third value are both greater than 1, and the second value is greater than 0 and less than or equal to 1.

6. The method according to any one of claims 1 to 3, characterized in that: The first subsequence among the M subsequences satisfies the first relationship among the M relationships, and the first relationship is: the k1th element in the first subsequence is greater than or equal to the k2th element in the first subsequence. The second subsequence among the M subsequences satisfies the second relationship among the M relationships, and the second relationship is: the kth element in the second subsequence is greater than or equal to the minimum value of the k1th element in the second subsequence and the k2th element in the second subsequence. The third subsequence among the M subsequences satisfies the third relationship among the M relationships, and the third relationship is: the k1th element in the third subsequence is less than or equal to the k2 elements of the third subsequence. The k, the k1 and the k2 are all integers greater than or equal to 1 and less than or equal to N, the k2 is greater than the k1, and the k is greater than or equal to the k1 and less than or equal to k2.

7. The method according to claim 4 or 5, characterized in that The method further comprises: The first network device sends first information to the second network device and / or the terminal device, where the first information indicates parameter information of the third sequence, and the parameter information includes at least one of the following: the first value, the second value, the third value, the μ, the v, the s, and the M.

8. The method according to any one of claims 1 to 7, characterized in that: The first signal is used for sensing, or the first signal is used for sensing and channel measurement, or the first signal is used for sensing and channel estimation, or the first signal is used for sensing and data transmission.

9. The method according to any one of claims 1 to 8, characterized in that The method further comprises: The first network device receives an echo signal of the first signal.

10. A communication method, characterized in that: The method comprises: The second network device receives an echo signal of a first signal, where the first signal is generated according to a first sequence, where the first sequence is a product of a second sequence and a third sequence; The first sequence includes N first elements, the second sequence includes N second elements, the second sequence carries data, and the third sequence includes N third elements greater than or equal to 0, The i-th element in the second sequence corresponds to the i-th subcarrier among N subcarriers in the first frequency domain resource, the i-th element in the third sequence corresponds to the i-th subcarrier in the first frequency domain resource, the i-th element in the first sequence is carried on the i-th subcarrier in the first frequency domain resource, N is an integer greater than 1, and i is an integer greater than or equal to 1 and less than or equal to N; The first frequency domain resources include M non-overlapping sub-frequency domain resources, the third sequence includes M sub-sequences, the t-th sub-sequence among the M sub-sequences corresponds to the t-th sub-frequency domain resource among the M sub-frequency domain resources, the t-th sub-sequence among the M sub-sequences satisfies the t-th relationship among the M relationships, M is an integer greater than or equal to 2 and less than or equal to N, and t is an integer greater than or equal to 1 and less than or equal to M.

11. The method according to claim 10, characterized in that The i-th element in the third sequence is equal to the N-i+1-th element in the third sequence.

12. The method according to claim 10 or 11, characterized in that The values ​​of elements of at least one subsequence in the M subsequences are all the same.

13. The method according to any one of claims 10 to 12, characterized in that: The M is equal to 3, the starting frequency of the t1th sub-frequency domain resource among the M sub-frequency domain resources is less than the starting frequency of the t2th sub-frequency domain resource among the M sub-frequency domain resources, the t1 is an integer greater than or equal to 1 and less than M, the t2 is an integer greater than 1 and less than or equal to M, and the t1 is less than the t2; The first subsequence of the M subsequences satisfies the first relation of the M relations, and the first relation is: the values ​​of the elements in the first subsequence are all first values; The second subsequence among the M subsequences satisfies the second relation among the M relations, and the second relation is: The values ​​of the elements in the second subsequence are all the second value, or the values ​​of the elements in the second subsequence satisfy the polynomial function of the square of (k-(N-1) / 2), or the values ​​of the elements in the second subsequence satisfy Functional relationship, where k is the sequence number of the element in the second subsequence in the third sequence, μ is less than 0, v is greater than 0, and s is greater than 0; The third subsequence among the M subsequences satisfies the third relationship among the M relationships, and the third relationship is: the values ​​of the elements in the third subsequence are all third values; The first value and the third value are both greater than the second value.

14. The method according to any one of claims 10 to 13, characterized in that: The M is equal to 5, the starting frequency of the t1th sub-frequency domain resource among the M sub-frequency domain resources is less than the starting frequency of the t2th sub-frequency domain resource among the M sub-frequency domain resources, the t1 is an integer greater than or equal to 1 and less than M, the t2 is an integer greater than 1 and less than or equal to M, and the t1 is less than the t2; The first subsequence of the M subsequences satisfies the first relation of the M relations, and the first relation is: the values ​​of the elements in the first subsequence are all first values; The second subsequence of the M subsequences satisfies the second relation of the M relations, and the second relation is: the values ​​of the elements in the second subsequence are all 1; The third subsequence among the M subsequences satisfies the third relationship among the M relationships, and the third relationship is: The values ​​of the elements in the third subsequence are all the second value, or the values ​​of the elements in the third subsequence satisfy the polynomial function of the square of (k-(N-1) / 2), or the values ​​of the elements in the third subsequence satisfy Functional relationship, where k is the sequence number of the element in the third subsequence in the third sequence, μ is less than 0, v is greater than 0, and s is greater than 0; The fourth subsequence of the M subsequences satisfies the fourth relationship of the M relationships, and the fourth relationship is: the values ​​of the elements in the fourth subsequence are all 1; The fifth subsequence among the M subsequences satisfies the fifth relationship among the M relationships, and the fifth relationship is: the values ​​of the elements in the fifth subsequence are all the third value; The first value and the third value are both greater than 1, and the second value is greater than 0 and less than or equal to 1.

15. The method according to any one of claims 10 to 13, characterized in that: The first subsequence among the M subsequences satisfies the first relationship among the M relationships, and the first relationship is: the k1th element in the first subsequence is greater than or equal to the k2th element in the first subsequence. The second subsequence among the M subsequences satisfies the second relationship among the M relationships, and the second relationship is: the kth element in the second subsequence is greater than or equal to the minimum value of the k1th element in the second subsequence and the k2th element in the second subsequence. The third subsequence among the M subsequences satisfies the third relationship among the M relationships, and the third relationship is: the k1th element in the third subsequence is less than or equal to the k2 elements of the third subsequence. The k, the k1 and the k2 are all integers greater than or equal to 1 and less than or equal to N, the k2 is greater than the k1, and the k is greater than or equal to the k1 and less than or equal to k2.

16. The method according to claim 13 or 14, characterized in that The method further comprises: The second network device receives first information sent by the first network device, where the first information is used to indicate parameter information of the third sequence, and the parameter information includes at least one of the following: the first value, the second value, the third value, μ, v, s, and M.

17. The method according to any one of claims 10 to 16, characterized in that: The first signal is used for sensing, or the first signal is used for sensing and channel measurement, or the first signal is used for sensing and channel estimation, or the first signal is used for sensing and data transmission.

18. A communication method, characterized in that: The method comprises: The terminal device receives a first signal, where the first signal is generated according to a first sequence, where the first sequence is a product of a second sequence and a third sequence. The first sequence includes N first elements, the second sequence includes N second elements, the second sequence carries data, and the third sequence includes N third elements greater than or equal to 0, The i-th element in the second sequence corresponds to the i-th subcarrier among N subcarriers in the first frequency domain resource, the i-th element in the third sequence corresponds to the i-th subcarrier in the first frequency domain resource, the i-th element in the first sequence is carried on the i-th subcarrier in the first frequency domain resource, N is an integer greater than 1, and i is an integer greater than or equal to 1 and less than or equal to N; The first frequency domain resources include M non-overlapping sub-frequency domain resources, the third sequence includes M sub-sequences, the t-th sub-sequence among the M sub-sequences corresponds to the t-th sub-frequency domain resource among the M sub-frequency domain resources, the t-th sub-sequence among the M sub-sequences satisfies the t-th relationship among the M relationships, M is an integer greater than or equal to 2 and less than or equal to N, and t is an integer greater than or equal to 1 and less than or equal to M.

19. The method according to claim 18, characterized in that The i-th element in the third sequence is equal to the N-i+1-th element in the third sequence.

20. The method according to claim 18 or 19, characterized in that The values ​​of elements of at least one subsequence in the M subsequences are all the same.

21. The method according to any one of claims 18 to 20, characterized in that: The M is equal to 3, the starting frequency of the t1th sub-frequency domain resource among the M sub-frequency domain resources is less than the starting frequency of the t2th sub-frequency domain resource among the M sub-frequency domain resources, the t1 is an integer greater than or equal to 1 and less than M, the t2 is an integer greater than 1 and less than or equal to M, and the t1 is less than the t2; The first subsequence of the M subsequences satisfies the first relation of the M relations, and the first relation is: the values ​​of the elements in the first subsequence are all first values; The second subsequence among the M subsequences satisfies the second relation among the M relations, and the second relation is: The values ​​of the elements in the second subsequence are all the second value, or the values ​​of the elements in the second subsequence satisfy the polynomial function of the square of (k-(N-1) / 2), or the values ​​of the elements in the second subsequence satisfy Functional relationship, where k is the sequence number of the element in the second subsequence in the third sequence, μ is less than 0, v is greater than 0, and s is greater than 0; The third subsequence among the M subsequences satisfies the third relationship among the M relationships, and the third relationship is: the values ​​of the elements in the third subsequence are all third values; The first value and the third value are both greater than the second value.

22. The method according to any one of claims 18 to 20, characterized in that The M is equal to 5, the starting frequency of the t1th sub-frequency domain resource among the M sub-frequency domain resources is less than the starting frequency of the t2th sub-frequency domain resource among the M sub-frequency domain resources, the t1 is an integer greater than or equal to 1 and less than M, the t2 is an integer greater than 1 and less than or equal to M, and the t1 is less than the t2; The first subsequence of the M subsequences satisfies the first relation of the M relations, and the first relation is: the values ​​of the elements in the first subsequence are all first values; The second subsequence of the M subsequences satisfies the second relation of the M relations, and the second relation is: the values ​​of the elements in the second subsequence are all 1; The third subsequence among the M subsequences satisfies the third relationship among the M relationships, and the third relationship is: The values ​​of the elements in the third subsequence are all the second value, or the values ​​of the elements in the third subsequence satisfy the polynomial function of the square of (k-(N-1) / 2), or the values ​​of the elements in the third subsequence satisfy Functional relationship, where k is the sequence number of the element in the third subsequence in the third sequence, μ is less than 0, v is greater than 0, and s is greater than 0; The fourth subsequence of the M subsequences satisfies the fourth relationship of the M relationships, and the fourth relationship is: the values ​​of the elements in the fourth subsequence are all 1; The fifth subsequence among the M subsequences satisfies the fifth relationship among the M relationships, and the fifth relationship is: the values ​​of the elements in the fifth subsequence are all the third value; The first value and the third value are both greater than 1, and the second value is greater than 0 and less than or equal to 1.

23. The method according to any one of claims 18 to 20, characterized in that The first subsequence among the M subsequences satisfies the first relationship among the M relationships, and the first relationship is: the k1th element in the first subsequence is greater than or equal to the k2th element in the first subsequence. The second subsequence among the M subsequences satisfies the second relationship among the M relationships, and the second relationship is: the kth element in the second subsequence is greater than or equal to the minimum value of the k1th element in the second subsequence and the k2th element in the second subsequence. The third subsequence among the M subsequences satisfies the third relationship among the M relationships, and the third relationship is: the k1th element in the third subsequence is less than or equal to the k2 elements of the third subsequence. The k, the k1 and the k2 are all integers greater than or equal to 1 and less than or equal to N, the k2 is greater than the k1, and the k is greater than or equal to the k1 and less than or equal to k2.

24. The method according to claim 21 or 22, characterized in that The method further comprises: The terminal device receives first information sent by a first network device, where the first information is used to indicate parameter information of the third sequence, and the parameter information includes at least one of the following: the first value, the second value, the third value, μ, v, s and M.

25. A communication device, characterized in that: The communication device comprises a processor and a memory, wherein the memory stores a computer program, and when the computer program is executed by the processor, the method according to any one of claims 1 to 9 is implemented.

26. A communication device, characterized in that: The communication device comprises a processor and a memory, wherein the memory stores a computer program, and when the computer program is executed by the processor, the method according to any one of claims 10 to 17 is implemented.

27. A communication device, characterized in that: The communication device comprises a processor and a memory, wherein the memory stores a computer program, and when the computer program is executed by the processor, the method according to any one of claims 18 to 24 is implemented.

28. A computer-readable storage medium, characterized in that: The computer-readable storage medium comprises a computer program, and when the computer program is executed by a processor, the method according to any one of claims 1 to 24 is implemented.

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