A communication method and apparatus

Abstract

Embodiments of the application disclose a communication method and device. The method comprises: a first network device generates a first signal according to a first sequence, the first sequence being a product of a second sequence and a third sequence; the second sequence carrying data; an i-th element in the second sequence corresponding to an i-th subcarrier of N subcarriers in a first frequency domain resource, an i-th element in the third sequence corresponding to the i-th subcarrier in the first frequency domain resource, an i-th element in the first sequence being carried on the i-th subcarrier in the first frequency domain resource; the first frequency domain resource comprising M non-overlapping sub-frequency domain resources; the third sequence comprising M sub-sequences; a t-th sub-sequence in the M sub-sequences corresponding to a t-th sub-frequency domain resource in the M sub-frequency domain resources; a t-th relationship in M relationships being satisfied by the t-th sub-sequence in the M sub-sequences; and the first signal being sent. The ranging accuracy of the sensor-fusion signal is improved by using the embodiments of the application.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of communication, in particular to a communication method and device. BACKGROUND

[0002] Communication and sensing integration is a key technology in the next generation of wireless communication networks, aiming to integrate wireless communication and sensing functions in the same system, and use various propagation characteristics of wireless signals to realize positioning, detection, imaging and identification of targets, etc. to obtain information about the surrounding physical environment, exploit communication capabilities, and enhance user experience. For example, a network device sends a sensing signal and receives a return signal to perform sensing and obtain the position, speed, etc. of a target in the environment. The return signal is a signal generated by reflecting the sensing signal in the target in the environment. The time delay of the return signal relative to the transmitted sensing signal reflects the distance of the target, and the Doppler frequency shift of the return signal relative to the transmitted sensing signal reflects the speed of the target.

[0003] When a network device needs to communicate with a terminal device and sense a target in the environment, the network device needs to send a communication and sensing integrated signal for communication and sensing, and how to design a communication and sensing integrated signal for both communication and sensing is a problem to be solved. SUMMARY

[0004] Embodiments of the present application provide a communication method and device, which can not only increase the root mean square bandwidth of the communication and sensing integrated signal, thereby improving the ranging accuracy of the communication and sensing integrated signal, but also reduce the peak sidelobe ratio of the distance spectrum obtained by sensing the communication and sensing integrated signal, thereby reducing the false alarm probability of sensing.

[0005] In a first aspect, embodiments of the present application provide a communication method, which is applied to a first network device, or a chip or circuit configured in the first network device, and includes:

[0006] generating a first signal according to a first sequence, the first sequence being a product of a second sequence and a third sequence;

[0007] 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;

[0008] The i-th element in the second sequence corresponds to the i-th subcarrier in N subcarriers in a 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;

[0009] The first frequency domain resource comprises M non-overlapping sub-frequency domain resources, the third sequence comprises M sub-sequences, a tth sub-sequence in the M sub-sequences corresponds to a tth sub-frequency domain resource in the M sub-frequency domain resources, a tth sub-sequence in the M sub-sequences satisfies a tth relation in the M relations, M is an integer greater than or equal to 2 and less than or equal to N, t is an integer greater than or equal to 1 and less than or equal to M;

[0010] The first signal is transmitted.

[0011] The first signal is a sense-and-communication fusion signal. The sense-and-communication fusion signal is generated by multiplying the second sequence carrying data by a third sequence in a segmented form. Different properties of the generated sense-and-communication fusion signal can be achieved by designing different forms of the third sequence to meet different sensing and communication requirements. For example, when the third sequence is a sequence in a downward concave form, the root mean square bandwidth of the sense-and-communication fusion signal can be increased, thereby improving the ranging accuracy of the sense-and-communication fusion signal. When the third sequence comprises a sub-sequence in an upward convex form, the peak side lobe ratio of the distance spectrum obtained by sensing using the sense-and-communication fusion signal is lower, thereby reducing the false alarm probability of sensing.

[0012] In a possible design, an i th element in the third sequence is equal to an N-i+1 th element in the third sequence. That is, the third sequence can be a symmetric sequence.

[0013] In another possible design, the values of the elements in at least one sub-sequence in the M sub-sequences are the same. The values of the elements in at least one sub-sequence in the third sequence are constant.

[0014] In another possible design, M is equal to 3, a starting frequency of a t1 th sub-frequency domain resource in the M sub-frequency domain resources is less than a starting frequency of a t2 th sub-frequency domain resource in 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.

[0015] A first sub-sequence in the M sub-sequences satisfies a first relation in the M relations, and the first relation is that the values of the elements in the first sub-sequence are all first values.

[0016] A second sub-sequence in the M sub-sequences satisfies a second relation in the M relations, and the second relation is:

[0017] The values of the elements in the second sub-sequence are all second values, or the values of the elements in the second sub-sequence satisfy a polynomial function of (k-(N-1) / 2) 2, or the values of the elements in the second sub-sequence satisfy a function relationship, wherein, The k is the sequence number of the element in the second subsequence in the third sequence, the mu is less than 0, the v is greater than 0, and the s is greater than 0.

[0018] The third subsequence in the M subsequence satisfies the third relationship in the M relationship, and the third relationship is that the values of the elements in the third subsequence are all third values.

[0019] The first value and the third value are both greater than the second value.

[0020] In this design, the third sequence is a sequence in a concave form, and the generation of the common sense fusion signal through the third sequence can increase the root mean square bandwidth of the common sense fusion signal, thereby improving the ranging accuracy of the common sense fusion signal.

[0021] In another possible design, the number of subcarriers included in the first sub-frequency 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 sub-frequency 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 number of subcarriers included in the first sub-frequency domain resource and the number of subcarriers included in the third sub-frequency domain resource divided by the number N of all subcarriers included in the first frequency domain resource is less than 0.5.

[0022] In another possible design, the first value is equal to the third value.

[0023] In another possible design, 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.

[0024] In another possible design, the M is equal to 5, the starting frequency of the t1th sub-frequency domain resource in the M sub-frequency domain resources is less than the starting frequency of the t2th 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.

[0025] The first subsequence in the M subsequence satisfies the first relationship in the M relationship, and the first relationship is that the values of the elements in the first subsequence are all first values.

[0026] The second subsequence in the M subsequence satisfies the second relationship in the M relationship, and the second relationship is that the values of the elements in the second subsequence are all 1.

[0027] The third subsequence in the M subsequence satisfies a third relationship in the M relationships, the third relationship is:

[0028] The value of the element in the third subsequence is a second value, or the value of the element in the third subsequence satisfies a polynomial function of (k-(N-1) / 2) square, or the value of the element in the third subsequence satisfies The function relationship is, where, The k is the sequence number of the element in the third subsequence in the third sequence, the μ is less than 0, the v is greater than 0, and the s is greater than 0;

[0029] The fourth subsequence in the M subsequence satisfies a fourth relationship in the M relationships, the fourth relationship is that the value of the element in the fourth subsequence is 1;

[0030] The fifth subsequence in the M subsequence satisfies a fifth relationship in the M relationships, the fifth relationship is that the value of the element in the fifth subsequence is a third value;

[0031] 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.

[0032] In this design, the third sequence is a sequence in a downward concave form, and generating the common sense fusion signal through the third sequence can increase the root mean square bandwidth of the common sense fusion signal, thereby improving the ranging accuracy of the common sense fusion signal.

[0033] In another possible design, the number of subcarriers included in the first sub-frequency domain resource is equal to the number of subcarriers included in the fifth sub-frequency domain resource, and / or the number of subcarriers included in the second sub-frequency domain resource is equal to the number of subcarriers included in the fourth sub-frequency domain resource.

[0034] In another possible design, the first value is equal to the third value.

[0035] In another possible design, 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. In this design, the third sequence is a sequence in a downward concave form, and generating the common sense fusion signal through the third sequence can increase the root mean square bandwidth of the common sense fusion signal, thereby improving the ranging accuracy of the common sense fusion signal.

[0036] In another possible design, a first one of the M sub-sequences satisfies a first one of the M relationships, where the first relationship is that a k1th element in the first sub-sequence is greater than or equal to a k2th element in the first sub-sequence. A second one of the M sub-sequences satisfies a second one of the M relationships, where the second relationship is that a kth element in the second sub-sequence is greater than or equal to a minimum of a k1th element in the second sub-sequence and a k2th element in the second sub-sequence. A third one of the M sub-sequences satisfies a third one of the M relationships, where the third relationship is that a k1th element in the third sub-sequence is less than or equal to a k2th element in the third sub-sequence. The k, the k1, and the k2 are integers greater than or equal to one 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 the k2. It can be seen that the first sub-sequence is a monotonically decreasing sequence, the second sub-sequence is an up-convex sequence, and the third sub-sequence is a monotonically increasing sequence.

[0037] In this design, the third sequence includes an up-convex sub-sequence, and the common sense fusion signal is generated based on the third sequence. The peak-to-sidelobe ratio of the distance profile obtained based on the common sense fusion signal is lower, which reduces the false alarm probability of sensing.

[0038] In another possible design, a sum of squares of all elements in the third sequence is equal to N.

[0039] 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. Sensing and communication are implemented based on the first signal.

[0040] In another possible design, a return signal of the first signal is received. The first network device transmits the first signal and receives a return signal of the first signal, and obtains information about a location, a speed, etc., of a target based on the return signal. The return signal is generated based on reflection of the first signal by the target in the environment.

[0041] In another possible design, the 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 used to determine 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 acquire the communication data or the communication reference signal sequence carried by the second sequence according to the third sequence, so as to implement the communication between the first network device and the terminal device. Moreover, in a case where the second sequence is known by the first network device and the second network device, different third sequences can be used to multiply the second sequence to obtain the first sequence, and different first signals generated by different first sequences are used for sensing, so as to adapt to different sensing performance requirements, and meanwhile, the first network device and the first terminal device can communicate.

[0042] 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, and includes the following steps:

[0043] receiving a back echo signal of a first signal, where the first signal is generated according to a first sequence, and the first sequence is a product of a second sequence and a third sequence;

[0044] 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.

[0045] An i th element in the second sequence corresponds to an i th subcarrier in N subcarriers in a first frequency domain resource, an i th element in the third sequence corresponds to the i th subcarrier in the first frequency domain resource, an 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.

[0046] The first frequency domain resource includes M non-overlapping sub-frequency domain resources, the third sequence includes M sub-sequences, an t th sub-sequence in the M sub-sequences corresponds to an t th sub-frequency domain resource in the M sub-frequency domain resources, the t th sub-sequence in the M sub-sequences satisfies an t th relationship in 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.

[0047] The first signal is a sense-and-communicate fusion signal. The sense-and-communicate fusion signal is generated by multiplying the second sequence carrying data by a third sequence in a segmented form. Different properties of the generated sense-and-communicate fusion signal can be achieved by using different forms of the third sequence to meet different sensing and communication requirements. For example, when the third sequence is a sequence in a concave form, the root mean square bandwidth of the sense-and-communicate fusion signal can be increased, thereby improving the ranging accuracy of the sense-and-communicate fusion signal. When the third sequence includes a sub-sequence in a convex form, the peak sidelobe ratio of the distance spectrum obtained by sensing using the sense-and-communicate fusion signal is lower, thereby reducing the false alarm probability of sensing.

[0048] In a possible design, an i-th element in the third sequence is equal to an (N-i+1)-th element in the third sequence. That is, the third sequence is a symmetric sequence.

[0049] In another possible design, the elements in at least one of the M sub-sequences have the same value. That is, the value of the elements in at least one of the M sub-sequences is constant.

[0050] In another possible design, M is equal to 3, a starting frequency of a t1-th sub-frequency domain resource in the M sub-frequency domain resources is less than a starting frequency of a t2-th sub-frequency domain resource in 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.

[0051] A first sub-sequence in the M sub-sequences satisfies a first relationship in the M relationships, and the first relationship is that the elements in the first sub-sequence all have a first value.

[0052] A second sub-sequence in the M sub-sequences satisfies a second relationship in the M relationships, and the second relationship is that:

[0053] The elements in the second sub-sequence all have a second value, or the elements in the second sub-sequence satisfy a polynomial function of (k-(N-1) / 2)2, or the elements in the second sub-sequence satisfy a function relationship, where, k is the sequence number of the element in the second sub-sequence in the third sequence, μ is less than 0, v is greater than 0, and s is greater than 0.

[0054] A third sub-sequence in the M sub-sequences satisfies a third relationship in the M relationships, and the third relationship is that the elements in the third sub-sequence all have a third value.

[0055] The first value and the third value are both greater than the second value.

[0056] In the design, the third sequence is a sequence in a concave form, and the generation of the common sense fusion signal through the third sequence can increase the root mean square bandwidth of the common sense fusion signal, thereby improving the ranging accuracy of the common sense fusion signal.

[0057] In another possible design, a value of a quantity of subcarriers included in the first sub-frequency domain resource divided by a quantity N of all subcarriers included in the first frequency domain resource is less than 0.25, or a value of a quantity of subcarriers included in the third sub-frequency domain resource divided by the quantity N of all subcarriers included in the first frequency domain resource is less than 0.25, or a value of a sum of quantities of subcarriers included in the first sub-frequency domain resource and the third sub-frequency domain resource divided by the quantity N of all subcarriers included in the first frequency domain resource is less than 0.5.

[0058] In another possible design, the first value is equal to the third value.

[0059] In another possible design, a quantity of subcarriers included in the first sub-frequency domain resource is equal to a quantity of subcarriers included in the third sub-frequency domain resource.

[0060] In another possible design, the M is equal to 5, a starting frequency of a t1th sub-frequency domain resource in the M sub-frequency domain resources is less than a starting frequency of a t2th 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.

[0061] A first sub-sequence in the M sub-sequences satisfies a first relationship in the M relationships, and the first relationship is that values of elements in the first sub-sequence are all first values.

[0062] A second sub-sequence in the M sub-sequences satisfies a second relationship in the M relationships, and the second relationship is that values of elements in the second sub-sequence are all 1.

[0063] A third sub-sequence in the M sub-sequences satisfies a third relationship in the M relationships, and the third relationship is that:

[0064] values of elements in the third sub-sequence are all second values, or the values of elements in the third sub-sequence satisfy a polynomial function of a square of (k-(N-1) / 2), or the values of elements in the third sub-sequence satisfy a function relationship wherein k is a sequence number of an element in the third sub-sequence in the third sequence, μ is less than 0, v is greater than 0, and s is greater than 0. ​

[0065] a fourth sub-sequence of the M sub-sequences satisfies a fourth relation of the M relations, the fourth relation being that values of elements in the fourth sub-sequence are all 1;

[0066] a fifth sub-sequence of the M sub-sequences satisfies a fifth relation of the M relations, the fifth relation being that values of elements in the fifth sub-sequence are all a third value;

[0067] wherein 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.

[0068] In this design, the third sequence is a sequence in a down concave form, and generating the common sense fusion signal through the third sequence can increase a root mean square bandwidth of the common sense fusion signal, thereby improving ranging accuracy of the common sense fusion signal.

[0069] In another possible design, a quantity of sub-carriers included in the first sub-frequency domain resource is equal to a quantity of sub-carriers included in the fifth sub-frequency domain resource, and / or a quantity of sub-carriers included in the second sub-frequency domain resource is equal to a quantity of sub-carriers included in the fourth sub-frequency domain resource.

[0070] In another possible design, the first value is equal to the third value.

[0071] In another possible design, a kth element in the third sequence is less than or equal to a maximum value of a k1th element in the third sequence and a 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. In this design, the third sequence is a sequence in a down concave form, and generating the common sense fusion signal through the third sequence can increase a root mean square bandwidth of the common sense fusion signal, thereby improving ranging accuracy of the common sense fusion signal.

[0072] In another possible design, a first subsequence in the M subsequence satisfies a first relationship in the M relationships, where the first relationship is that a k1th element in the first subsequence is greater than or equal to a k2th element in the first subsequence. A second subsequence in the M subsequence satisfies a second relationship in the M relationships, where the second relationship is that a kth element in the second subsequence is greater than or equal to a minimum of a k1th element in the second subsequence and a k2th element in the second subsequence. A third subsequence in the M subsequence satisfies a third relationship in the M relationships, where the third relationship is that a k1th element in the third subsequence is less than or equal to a k2th element in the third subsequence. The k, the k1, and the k2 are integers and are 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 the k2. It can be seen that the first subsequence is a monotonically decreasing sequence, the second subsequence is an up-convex sequence, and the third subsequence is a monotonically increasing sequence.

[0073] In this design, the third sequence includes an up-convex subsequence, and the common sense fusion signal is generated based on the third sequence, and the peak-to-sidelobe ratio of the distance spectrum obtained through sensing based on the common sense fusion signal is lower, which reduces the false alarm probability of sensing.

[0074] In another possible design, a sum of squares of all elements in the third sequence is equal to N.

[0075] In another possible design, a first network device sends first information, where the first information is used to indicate parameter information of the third sequence, and the parameter information includes multiple sets of parameters used to determine the third sequence. The parameter can be used to determine multiple relationships. A second network device determines the third sequence based on the first information. A second sequence is obtained by processing the first signal based on the third sequence. Different first sequences are obtained by multiplying the third sequence and the second sequence, and the first signal is generated based on the different first sequences to perform sensing, which adapts to different sensing performance requirements.

[0076] 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. Sensing and communication are implemented based on the first signal.

[0077] 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, and includes the following steps:

[0078] receive a first signal, the first signal being generated according to a first sequence, the first sequence being a product of a second sequence and a third sequence,

[0079] the first sequence comprising N first elements, the second sequence comprising N second elements, the second sequence carrying data, the third sequence comprising N third elements greater than or equal to 0,

[0080] an i-th element in the second sequence corresponding to an i-th subcarrier in N subcarriers in a first frequency domain resource, an i-th element in the third sequence corresponding to the i-th subcarrier in the first frequency domain resource, an i-th element in the first sequence being carried on the i-th subcarrier in the first frequency domain resource, the N being an integer greater than 1, the i being an integer greater than or equal to 1 and less than or equal to N;

[0081] the first frequency domain resource comprising M non-overlapping sub-frequency domain resources, the third sequence comprising M sub-sequences, an t-th sub-sequence in the M sub-sequences corresponding to an t-th sub-frequency domain resource in the M sub-frequency domain resources, the t-th sub-sequence in the M sub-sequences satisfying an t-th relation in M relations, the M being an integer greater than or equal to 2 and less than or equal to N, the t being an integer greater than or equal to 1 and less than or equal to M.

[0082] wherein the first signal is a sense-and-communication signal. The sense-and-communication signal is generated by multiplying the second sequence carrying data by a third sequence in a segmented form. By designing the third sequence in different forms, the generated sense-and-communication signal can have different properties to meet different sensing and communication requirements. For example, when the third sequence is a sequence in a downward concave form, the root mean square bandwidth of the sense-and-communication signal can be increased, thereby improving the ranging accuracy of the sense-and-communication signal; when the third sequence comprises a sub-sequence in an upward convex form, the peak sidelobe ratio of the distance spectrum obtained by sensing using the sense-and-communication signal is lower, thereby reducing the false alarm probability of sensing.

[0083] In a possible design, an i-th element in the third sequence is equal to an N-i+1-th element in the third sequence. That is, the third sequence is a symmetric sequence.

[0084] In another possible design, elements in at least one sub-sequence in the M sub-sequences have the same value. That is, the value of elements in at least one sub-sequence in the third sequence is constant.

[0085] In another possible design, the M is equal to 3, a starting frequency of a t1th sub-frequency domain resource of the M sub-frequency domain resources is less than a starting frequency of a t2th sub-frequency domain resource of 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.

[0086] A first sub-sequence of the M sub-sequences satisfies a first relationship of the M relationships, and the first relationship is that values of elements in the first sub-sequence are all first values.

[0087] A second sub-sequence of the M sub-sequences satisfies a second relationship of the M relationships, and the second relationship is:

[0088] Values of elements in the second sub-sequence are all second values, or the values of the elements in the second sub-sequence satisfy a polynomial function of (k-(N-1) / 2)2, or the values of the elements in the second sub-sequence satisfy a function relationship, where, The k is a sequence number of an element in the second sub-sequence in the third sequence, the μ is less than 0, the v is greater than 0, and the s is greater than 0.

[0089] A third sub-sequence of the M sub-sequences satisfies a third relationship of the M relationships, and the third relationship is that values of elements in the third sub-sequence are all third values.

[0090] The first value and the third value are both greater than the second value.

[0091] In this design, the third sequence is a sequence in a concave form, and generating the common sense fusion signal through the third sequence can increase a root mean square bandwidth of the common sense fusion signal, thereby improving ranging accuracy of the common sense fusion signal.

[0092] In another possible design, a quantity of subcarriers included in the first sub-frequency domain resource divided by a quantity N of all subcarriers included in the first frequency domain resource is less than 0.25, or a quantity of subcarriers included in the third sub-frequency domain resource divided by the quantity N of all subcarriers included in the first frequency domain resource is less than 0.25, or a sum of quantities of subcarriers included in the first sub-frequency domain resource and the third sub-frequency domain resource divided by the quantity N of all subcarriers included in the first frequency domain resource is less than 0.5.

[0093] In another possible design, the first value is equal to the third value.

[0094] In another possible design, the first sub-frequency domain resource includes a number of subcarriers equal to a number of subcarriers included in the third sub-frequency domain resource.

[0095] In another possible design, the M is equal to 5, a starting frequency of a t1th sub-frequency domain resource in the M sub-frequency domain resources is less than a starting frequency of a t2th 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.

[0096] A first sub-sequence in the M sub-sequences satisfies a first relationship in the M relationships, and the first relationship is that values of elements in the first sub-sequence are all first values.

[0097] A second sub-sequence in the M sub-sequences satisfies a second relationship in the M relationships, and the second relationship is that values of elements in the second sub-sequence are all 1.

[0098] A third sub-sequence in the M sub-sequences satisfies a third relationship in the M relationships, and the third relationship is that:

[0099] values of elements in the third sub-sequence are all second values, or the values of elements in the third sub-sequence satisfy a polynomial function of a square of (k-(N-1) / 2), or the values of elements in the third sub-sequence satisfy a function relationship wherein k is a serial number of an element in the third sub-sequence in the third sequence, μ is less than 0, v is greater than 0, and s is greater than 0.

[0100] A fourth sub-sequence in the M sub-sequences satisfies a fourth relationship in the M relationships, and the fourth relationship is that values of elements in the fourth sub-sequence are all 1.

[0101] A fifth sub-sequence in the M sub-sequences satisfies a fifth relationship in the M relationships, and the fifth relationship is that values of elements in the fifth sub-sequence are all third values.

[0102] wherein 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.

[0103] In this design, when the third sequence is a sequence in a concave form, generating the common-sensing fusion signal through the third sequence can increase a root mean square bandwidth of the common-sensing fusion signal, thereby improving ranging accuracy of the common-sensing fusion signal.

[0104] ​In another design, the first sub-frequency domain resource includes a number of subcarriers equal to a number of subcarriers included in the fifth sub-frequency domain resource, and / or the second sub-frequency domain resource includes a number of subcarriers equal to a number of subcarriers included in the fourth sub-frequency domain resource.

[0105] In another design, the first value is equal to the third value.

[0106] In another design, a kth element in the third sequence is less than or equal to a maximum of a k1th element in the third sequence and a k2th element in the third sequence, where k, k1, and k2 are integers that are 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 sequence in a down concave form, and generating the common sense fusion signal based on the third sequence can increase a root mean square bandwidth of the common sense fusion signal, thereby improving ranging accuracy of the common sense fusion signal.

[0107] In another design, a first sub-sequence in the M sub-sequences satisfies a first relationship in the M relationships, where the first relationship is that a k1th element in the first sub-sequence is greater than or equal to a k2th element in the first sub-sequence. A second sub-sequence in the M sub-sequences satisfies a second relationship in the M relationships, where the second relationship is that a kth element in the second sub-sequence is greater than or equal to a minimum of a k1th element in the second sub-sequence and a k2th element in the second sub-sequence. A third sub-sequence in the M sub-sequences satisfies a third relationship in the M relationships, where the third relationship is that a k1th element in the third sub-sequence is less than or equal to a k2th element in the third sub-sequence. k, k1, and k2 are integers that are 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. It can be seen that the first sub-sequence is a monotonically decreasing sequence, the second sub-sequence is a sequence in an up convex form, and the third sub-sequence is a monotonically increasing sequence.

[0108] In this design, the third sequence includes a sub-sequence in an up convex form, and generating the common sense fusion signal based on the third sequence can result in a lower peak-to-sidelobe ratio of a distance spectrum obtained based on the common sense fusion signal, thereby reducing a false alarm probability of sensing.

[0109] In another design, a sum of squares of all elements in the third sequence is equal to N.

[0110] In another possible design, the first terminal 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 multiple sets of parameters used to determine the third sequence. The parameters can be used to determine multiple relationships. The second sequence is obtained from the first signal based on the first information. The third sequence is determined based on the parameter information of the third sequence, and the second sequence is obtained by demodulating the first signal, so that communication data or a communication reference sequence carried by the second sequence is obtained, and communication between the first network device and the first terminal device is implemented.

[0111] 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. Sensing and communication are implemented by using the first signal.

[0112] 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, and includes the following steps.

[0113] Receiving a back echo signal of a first signal, where the first signal is generated according to a first sequence, and the first sequence is a product of a second sequence and a third sequence;

[0114] 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,

[0115] An i th element in the second sequence corresponds to an i th subcarrier in N subcarriers in a first frequency domain resource, an i th element in the third sequence corresponds to the i th subcarrier in the first frequency domain resource, an 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;

[0116] The first frequency domain resource includes M sub-frequency domain resources that do not overlap with each other, the third sequence includes M sub-sequences, an t th sub-sequence in the M sub-sequences corresponds to an t th sub-frequency domain resource in the M sub-frequency domain resources, the t th sub-sequence in the M sub-sequences satisfies an t th relationship in 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.

[0117] The first signal is a sense-and-communicate fusion signal. The sense-and-communicate fusion signal is generated by multiplying the second sequence carrying data by a third sequence in a segmented form. By designing different forms of the third sequence, the generated sense-and-communicate fusion signal can have different properties to meet different sensing and communication requirements. For example, when the third sequence is a sequence in a concave form, the root mean square bandwidth of the sense-and-communicate fusion signal can be increased, thereby improving the ranging accuracy of the sense-and-communicate fusion signal; when the third sequence includes a sub-sequence in a convex form, the peak sidelobe ratio of the distance spectrum obtained by sensing using the sense-and-communicate fusion signal is lower, thereby reducing the false alarm probability of sensing.

[0118] In a possible design, an i-th element in the third sequence is equal to an (N-i+1)-th element in the third sequence. That is, the third sequence can be a symmetric sequence.

[0119] In another possible design, the elements in at least one of the M sub-sequences have the same value. That is, the value of the elements in at least one of the M sub-sequences is constant.

[0120] In another possible design, M is equal to 3, a starting frequency of a t1-th sub-frequency domain resource in the M sub-frequency domain resources is less than a starting frequency of a t2-th sub-frequency domain resource in 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.

[0121] A first sub-sequence in the M sub-sequences satisfies a first relationship in the M relationships, and the first relationship is that the elements in the first sub-sequence all have a first value.

[0122] A second sub-sequence in the M sub-sequences satisfies a second relationship in the M relationships, and the second relationship is:

[0123] The elements in the second sub-sequence all have a second value, or the elements in the second sub-sequence satisfy a polynomial function of (k-(N-1) / 2)2, or the elements in the second sub-sequence satisfy a function relationship, where, k is the sequence number of the element in the second sub-sequence in the third sequence, μ is less than 0, v is greater than 0, and s is greater than 0.

[0124] A third sub-sequence in the M sub-sequences satisfies a third relationship in the M relationships, and the third relationship is that the elements in the third sub-sequence all have a third value.

[0125] The first value and the third value are both greater than the second value.

[0126] In the design, the third sequence is a sequence in a concave form, and the generation of the common sense fusion signal through the third sequence can increase the root mean square bandwidth of the common sense fusion signal, thereby improving the ranging accuracy of the common sense fusion signal.

[0127] In another possible design, a value of a quantity of subcarriers included in the first sub-frequency domain resource divided by a quantity N of all subcarriers included in the first frequency domain resource is less than 0.25, or a value of a quantity of subcarriers included in the third sub-frequency domain resource divided by the quantity N of all subcarriers included in the first frequency domain resource is less than 0.25, or a value of a sum of quantities of subcarriers included in the first sub-frequency domain resource and the third sub-frequency domain resource divided by the quantity N of all subcarriers included in the first frequency domain resource is less than 0.5.

[0128] In another possible design, the first value is equal to the third value.

[0129] In another possible design, a quantity of subcarriers included in the first sub-frequency domain resource is equal to a quantity of subcarriers included in the third sub-frequency domain resource.

[0130] In another possible design, the M is equal to 5, a starting frequency of a t1th sub-frequency domain resource in the M sub-frequency domain resources is less than a starting frequency of a t2th 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.

[0131] A first sub-sequence in the M sub-sequences satisfies a first relationship in the M relationships, and the first relationship is that values of elements in the first sub-sequence are all first values.

[0132] A second sub-sequence in the M sub-sequences satisfies a second relationship in the M relationships, and the second relationship is that values of elements in the second sub-sequence are all 1.

[0133] A third sub-sequence in the M sub-sequences satisfies a third relationship in the M relationships, and the third relationship is that:

[0134] values of elements in the third sub-sequence are all second values, or the values of elements in the third sub-sequence satisfy a polynomial function of a square of (k-(N-1) / 2), or the values of elements in the third sub-sequence satisfy a function relationship, where k is a sequence number of an element in the third sub-sequence in the third sequence, μ is less than 0, v is greater than 0, and s is greater than 0. The k is a sequence number of an element in the third sub-sequence in the third sequence, μ is less than 0, v is greater than 0, and s is greater than 0. ​

[0135] a fourth one of the M sequences satisfies a fourth one of the M relationships, the fourth relationship being that values of elements in the fourth one of the M sequences are all 1;

[0136] a fifth one of the M sequences satisfies a fifth one of the M relationships, the fifth relationship being that values of elements in the fifth one of the M sequences are all a third value;

[0137] wherein 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.

[0138] In this design, the third sequence is a sequence in a down concave form, and generating the common sense fusion signal through the third sequence can increase a root mean square bandwidth of the common sense fusion signal, thereby improving ranging accuracy of the common sense fusion signal.

[0139] In another possible design, a quantity of subcarriers included in the first one of the sub-frequency domain resources is equal to a quantity of subcarriers included in the fifth one of the sub-frequency domain resources, and / or a quantity of subcarriers included in the second one of the sub-frequency domain resources is equal to a quantity of subcarriers included in the fourth one of the sub-frequency domain resources.

[0140] In another possible design, the first value is equal to the third value.

[0141] In another possible design, a kth element in the third sequence is less than or equal to a maximum of a k1th element in the third sequence and a 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 the k2. In this design, the third sequence is a sequence in a down concave form, and generating the common sense fusion signal through the third sequence can increase a root mean square bandwidth of the common sense fusion signal, thereby improving ranging accuracy of the common sense fusion signal.

[0142] In another possible design, a first subsequence in the M subsequence satisfies a first relationship in the M relationships, the first relationship being that a k1th element in the first subsequence is greater than or equal to a k2th element in the first subsequence. A second subsequence in the M subsequence satisfies a second relationship in the M relationships, the second relationship being that a kth element in the second subsequence is greater than or equal to a minimum of a k1th element in the second subsequence and a k2th element in the second subsequence. A third subsequence in the M subsequence satisfies a third relationship in the M relationships, the third relationship being that a k1th element in the third subsequence is less than or equal to a k2th element in the third subsequence. The k, the k1, and the k2 are 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 the k2. It can be seen that the first subsequence is a monotonically decreasing sequence, the second subsequence is an up-convex sequence, and the third subsequence is a monotonically increasing sequence.

[0143] In this design, the third sequence includes an up-convex subsequence, and the common sense fusion signal is generated based on the third sequence, so that the peak-to-sidelobe ratio of the distance spectrum obtained through sensing is lower, and thus the false alarm probability of sensing is reduced.

[0144] In another possible design, a sum of squares of all elements in the third sequence is equal to N.

[0145] In another possible design, the first network device sends first information, and the first information is used to indicate parameter information of the third sequence, where the parameter information includes multiple sets of parameters used to determine the third sequence. The parameter can be used to determine multiple relationships. The 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 and the second sequence, and the first signal is generated based on the different first sequences to perform sensing, so as to adapt to different sensing performance requirements.

[0146] 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. Sensing and communication are implemented through the first signal.

[0147] In a fifth aspect, an embodiment of the present application provides a communication apparatus, which is a first network device, or a unit or module in the first network device, and includes:

[0148] The processing module is configured to generate a first signal based on a first sequence, where the first sequence is a product of a second sequence and a third sequence.

[0149] the first sequence comprises N first elements, the second sequence comprises N second elements, the second sequence carries data, and the third sequence comprises N third elements greater than or equal to 0;

[0150] the i th element in the second sequence corresponds to an i th subcarrier of N subcarriers in a 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;

[0151] the first frequency domain resource comprises M sub-frequency domain resources that do not overlap with each other, the third sequence comprises M sub-sequences, an t th sub-sequence of the M sub-sequences corresponds to an t th sub-frequency domain resource of the M sub-frequency domain resources, the t th sub-sequence of the M sub-sequences satisfies an t th relation of M relations, 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;

[0152] a sending module, configured to send the first signal.

[0153] In another possible design, the i th element in the third sequence is equal to an N-i+1 th element in the third sequence.

[0154] In another possible design, elements of at least one sub-sequence of the M sub-sequences are all of the same value.

[0155] In another possible design, M is equal to 3, a starting frequency of an t1 th sub-frequency domain resource of the M sub-frequency domain resources is less than a starting frequency of an t2 th sub-frequency domain resource of 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.

[0156] a first sub-sequence of the M sub-sequences satisfies a first relation of the M relations, and the first relation is that elements in the first sub-sequence are all of a first value.

[0157] a second sub-sequence of the M sub-sequences satisfies a second relation of the M relations, and the second relation is:

[0158] elements in the second sub-sequence are all of a second value, or elements in the second sub-sequence satisfy a polynomial function of a square of (k-(N-1) / 2), or elements in the second sub-sequence satisfy a polynomial function of a square of (k-(N-1) / 2) and a polynomial function of a square of (k+(N-1) / 2). a function relationship, wherein, the k is the sequence number of an element in the third sequence in the second subsequence, the μ is less than 0, the v is greater than 0, and the s is greater than 0;

[0159] a third subsequence in the M subsequences satisfies a third relationship in the M relationships, the third relationship is that values of elements in the third subsequence are all third values;

[0160] The first value and the third value are both greater than the second value.

[0161] In another possible design, the M is equal to 5, a starting frequency of a t1th sub-frequency domain resource in the M sub-frequency domain resources is less than a starting frequency of a t2th 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;

[0162] a first subsequence in the M subsequences satisfies a first relationship in the M relationships, the first relationship is that values of elements in the first subsequence are all first values;

[0163] a second subsequence in the M subsequences satisfies a second relationship in the M relationships, the second relationship is that values of elements in the second subsequence are all 1;

[0164] a third subsequence in the M subsequences satisfies a third relationship in the M relationships, the third relationship is that:

[0165] values of elements in the third subsequence are all second values, or values of elements in the third subsequence satisfy a square of a polynomial function of (k-(N-1) / 2), or values of elements in the third subsequence satisfy a function relationship, wherein, the k is the sequence number of an element in the third sequence in the third subsequence, the μ is less than 0, the v is greater than 0, and the s is greater than 0;

[0166] a fourth subsequence in the M subsequences satisfies a fourth relationship in the M relationships, the fourth relationship is that values of elements in the fourth subsequence are all 1;

[0167] a fifth subsequence in the M subsequences satisfies a fifth relationship in the M relationships, the fifth relationship is that values of elements in the fifth subsequence are all third values;

[0168] 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.

[0169] In another possible design, the sending module is further configured to send, to the second network device and / or the terminal device, first information indicating parameter information of the third sequence, the parameter information including at least one of the first value, the second value, the third value, the μ, the v, the s, and the M.

[0170] 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.

[0171] In another possible design, the apparatus further includes a receiving module configured to receive a back echo signal of the first signal.

[0172] The operations and advantages of the communication apparatus can be refer to the method and advantages of the first aspect, and details are not repeated.

[0173] In a sixth aspect, an embodiment of the present application provides a communication apparatus, which is a second network device, or a unit or module in the second network device, and includes:

[0174] The receiving module is configured to receive a back echo signal of the first signal, the first signal being generated according to a first sequence, the first sequence being a product of a second sequence and a third sequence;

[0175] The first sequence includes N first elements, the second sequence includes N second elements, the second sequence carrying data, and the third sequence includes N third elements greater than or equal to 0,

[0176] An i th element in the second sequence corresponds to an i th subcarrier in N subcarriers in a first frequency domain resource, an i th element in the third sequence corresponds to the i th subcarrier in the first frequency domain resource, and an i th element in the first sequence is carried on the i th subcarrier in the first frequency domain resource, the N being an integer greater than 1, and the i being an integer greater than or equal to 1 and less than or equal to N;

[0177] The first frequency domain resource includes M non-overlapping sub-frequency domain resources, the third sequence includes M sub-sequences, an t th sub-sequence in the M sub-sequences corresponds to an t th sub-frequency domain resource in the M sub-frequency domain resources, and the t th sub-sequence in the M sub-sequences satisfies an t th relation in M relations, the M being an integer greater than or equal to 2 and less than or equal to N, and the t being an integer greater than or equal to 1 and less than or equal to M.

[0178] In another possible design, an i-th element in the third sequence is equal to an N-i+1-th element in the third sequence.

[0179] In another possible design, elements in at least one of the M sub-sequences have the same value.

[0180] In another possible design, the M is equal to 3, a starting frequency of a t1-th sub-frequency domain resource in the M sub-frequency domain resources is less than a starting frequency of a 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.

[0181] A 1st sub-sequence in the M sub-sequences satisfies a 1st relation in the M relations, and the 1st relation is that values of elements in the 1st sub-sequence are all a 1st value.

[0182] A 2nd sub-sequence in the M sub-sequences satisfies a 2nd relation in the M relations, and the 2nd relation is that:

[0183] values of elements in the 2nd sub-sequence are all a 2nd value, or the values of elements in the 2nd sub-sequence satisfy a polynomial function of (k-(N-1) / 2) squared, or the values of elements in the 2nd sub-sequence satisfy a function relation, where, the k is a sequence number of an element in the 2nd sub-sequence in the third sequence, the μ is less than 0, the v is greater than 0, and the s is greater than 0.

[0184] A 3rd sub-sequence in the M sub-sequences satisfies a 3rd relation in the M relations, and the 3rd relation is that values of elements in the 3rd sub-sequence are all a 3rd value.

[0185] wherein the 1st value and the 3rd value are both greater than the 2nd value.

[0186] In another possible design, the M is equal to 5, a starting frequency of a t1-th sub-frequency domain resource in the M sub-frequency domain resources is less than a starting frequency of a 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.

[0187] A 1st sub-sequence in the M sub-sequences satisfies a 1st relation in the M relations, and the 1st relation is that values of elements in the 1st sub-sequence are all a 1st value.

[0188] a second sub-sequence in the M sub-sequences satisfies a second relationship in the M relationships, the second relationship is that values of elements in the second sub-sequence are all 1;

[0189] a third sub-sequence in the M sub-sequences satisfies a third relationship in the M relationships, the third relationship is that:

[0190] values of elements in the third sub-sequence are all a second value, or the values of elements in the third sub-sequence satisfy a polynomial function of (k-(N-1) / 2) square, or the values of elements in the third sub-sequence satisfy a function relationship, wherein, the k is a serial number of an element in the third sub-sequence in the third sequence, the μ is less than 0, the v is greater than 0, and the s is greater than 0;

[0191] a fourth sub-sequence in the M sub-sequences satisfies a fourth relationship in the M relationships, the fourth relationship is that values of elements in the fourth sub-sequence are all 1;

[0192] a fifth sub-sequence in the M sub-sequences satisfies a fifth relationship in the M relationships, the fifth relationship is that values of elements in the fifth sub-sequence are all a third value;

[0193] wherein 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.

[0194] In another possible design, the receiving module is further configured to receive first information sent by the first network device, the first information being used to indicate parameter information of the third sequence, and the parameter information including at least one of the first value, the second value, the third value, the μ, the v, the s, and the M.

[0195] 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.

[0196] The operations and advantages of the communication apparatus can refer to the operations and advantages of the method in the second aspect, and details are not repeated.

[0197] In a seventh aspect, an embodiment of the present application provides a communication apparatus, which is a first terminal device, or a unit or module in the first terminal device, and includes:

[0198] a receiving module configured to receive a first signal, the first signal being generated according to a first sequence, the first sequence being a product of a second sequence and a third sequence, and the second sequence being a product of the first sequence and a fourth sequence.

[0199] the first sequence comprises N first elements, the second sequence comprises N second elements, the second sequence carries data, the third sequence comprises N third elements greater than or equal to 0,

[0200] the i th element in the second sequence corresponds to an i th subcarrier in N subcarriers in a 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, the N is an integer greater than 1, the i is an integer greater than or equal to 1 and less than or equal to N;

[0201] the first frequency domain resource comprises M sub-frequency domain resources which do not overlap with each other, the third sequence comprises M sub-sequences, an t th sub-sequence in the M sub-sequences corresponds to an t th sub-frequency domain resource in the M sub-frequency domain resources, the t th sub-sequence in the M sub-sequences satisfies an t th relation in M relations, the M is an integer greater than or equal to 2 and less than or equal to N, the t is an integer greater than or equal to 1 and less than or equal to M.

[0202] In another possible design, the i th element in the third sequence is equal to an N-i+1 th element in the third sequence.

[0203] In another possible design, the values of the elements in at least one sub-sequence in the M sub-sequences are all the same.

[0204] In another possible design, the M is equal to 3, a starting frequency of an t1 th sub-frequency domain resource in the M sub-frequency domain resources is less than a starting frequency of an 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, the t1 is less than the t2;

[0205] a first sub-sequence in the M sub-sequences satisfies a first relation in the M relations, the first relation is that the values of the elements in the first sub-sequence are all first values;

[0206] a second sub-sequence in the M sub-sequences satisfies a second relation in the M relations, the second relation is that the values of the elements in the second sub-sequence are all second values, or the values of the elements in the second sub-sequence satisfy a polynomial function of a square of (k-(N-1) / 2), or the values of the elements in the second sub-sequence satisfy

[0207] a function relation, wherein, ​The k is the sequence number of the element in the third sequence in the third sub-sequence, the mu is less than 0, the v is greater than 0, and the s is greater than 0;

[0208] The third sub-sequence in the M sub-sequences satisfies a third relationship in the M relationships, and the third relationship is that the values of the elements in the third sub-sequence are all third values.

[0209] The first value and the third value are both greater than the second value.

[0210] In another possible design, the M is equal to 5, a starting frequency of a t1th sub-frequency domain resource in the M sub-frequency domain resources is less than a starting frequency of a t2th 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.

[0211] The first sub-sequence in the M sub-sequences satisfies a first relationship in the M relationships, and the first relationship is that the values of the elements in the first sub-sequence are all first values.

[0212] The second sub-sequence in the M sub-sequences satisfies a second relationship in the M relationships, and the second relationship is that the values of the elements in the second sub-sequence are all 1.

[0213] The third sub-sequence in the M sub-sequences satisfies a third relationship in the M relationships, and the third relationship is that:

[0214] The values of the elements in the third sub-sequence are all second values, or the values of the elements in the third sub-sequence satisfy a polynomial function of a square of (k-(N-1) / 2), or the values of the elements in the third sub-sequence satisfy a function relationship, where, The k is the sequence number of the element in the third sequence in the third sub-sequence, the mu is less than 0, the v is greater than 0, and the s is greater than 0;

[0215] The fourth sub-sequence in the M sub-sequences satisfies a fourth relationship in the M relationships, and the fourth relationship is that the values of the elements in the fourth sub-sequence are all 1.

[0216] The fifth sub-sequence in the M sub-sequences satisfies a fifth relationship in the M relationships, and the fifth relationship is that the values of the elements in the fifth sub-sequence are all third values.

[0217] 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.

[0218] In another possible design, the receiving module is further configured 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 first value, the second value, the third value, the μ, the v, the s, and the M.

[0219] The processing module is configured to acquire the second sequence from the first signal based on the first information.

[0220] The operations and advantages of the communication apparatus can refer to those of the method in the third aspect and the advantages, and details are not repeated.

[0221] In an eighth aspect, an embodiment of the present application provides a communication apparatus, which is a second terminal device, or a unit or module in the second terminal device, and includes:

[0222] The receiving module is configured to receive a back echo signal of a first signal, where the first signal is generated according to a first sequence, and the first sequence is a product of a second sequence and a third sequence.

[0223] 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,

[0224] An i th element in the second sequence corresponds to an i th subcarrier in N subcarriers in a first frequency domain resource, an i th element in the third sequence corresponds to the i th subcarrier in the first frequency domain resource, an i th element in the first sequence is carried on the i th subcarrier in the first frequency domain resource, the N is an integer greater than 1, the i is an integer greater than or equal to 1 and less than or equal to N,

[0225] The first frequency domain resource includes M non-overlapping sub-frequency domain resources, the third sequence includes M sub-sequences, an t th sub-sequence in the M sub-sequences corresponds to an t th sub-frequency domain resource in the M sub-frequency domain resources, the t th sub-sequence in the M sub-sequences satisfies an t th relationship in M relationships, 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.

[0226] In another possible design, an i th element in the third sequence is equal to an N-i+1 th element in the third sequence.

[0227] In another possible design, elements in at least one sub-sequence in the M sub-sequences are all the same.

[0228] In another possible design, the M is equal to 3, a starting frequency of a t1th sub-frequency domain resource of the M sub-frequency domain resources is less than a starting frequency of a t2th sub-frequency domain resource of 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;

[0229] A first sub-sequence of the M sub-sequences satisfies a first relationship of the M relationships, and the first relationship is that values of elements in the first sub-sequence are all first values;

[0230] A second sub-sequence of the M sub-sequences satisfies a second relationship of the M relationships, and the second relationship is that:

[0231] values of elements in the second sub-sequence are all second values, or the values of the elements in the second sub-sequence satisfy a polynomial function of (k-(N-1) / 2) squared, or the values of the elements in the second sub-sequence satisfy a function relationship, where, the k is a sequence number of an element in the second sub-sequence in the third sequence, the μ is less than 0, the v is greater than 0, and the s is greater than 0;

[0232] A third sub-sequence of the M sub-sequences satisfies a third relationship of the M relationships, and the third relationship is that values of elements in the third sub-sequence are all third values;

[0233] wherein the first value and the third value are both greater than the second value.

[0234] In another possible design, the M is equal to 5, a starting frequency of a t1th sub-frequency domain resource of the M sub-frequency domain resources is less than a starting frequency of a t2th sub-frequency domain resource of 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;

[0235] A first sub-sequence of the M sub-sequences satisfies a first relationship of the M relationships, and the first relationship is that values of elements in the first sub-sequence are all first values;

[0236] A second sub-sequence of the M sub-sequences satisfies a second relationship of the M relationships, and the second relationship is that values of elements in the second sub-sequence are all 1;

[0237] A third sub-sequence of the M sub-sequences satisfies a third relationship of the M relationships, and the third relationship is that:

[0238] the values of the elements in the third sub-sequence are all the second value, or the values of the elements in the third sub-sequence satisfy a polynomial function of (k-(N-1) / 2)2, or the values of the elements in the third sub-sequence satisfy a function relationship, wherein, the k is the sequence number of the element in the third sub-sequence in the third sequence, the μ is less than 0, the v is greater than 0, and the s is greater than 0;

[0239] a fourth sub-sequence in the M sub-sequences satisfies a fourth relationship in the M relationships, and the fourth relationship is that the values of the elements in the fourth sub-sequence are all 1;

[0240] a fifth sub-sequence in the M sub-sequences satisfies a fifth relationship in the M relationships, and the fifth relationship is that the values of the elements in the fifth sub-sequence are all a third value;

[0241] wherein 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.

[0242] In another possible design, the receiving module is further configured 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 first value, the second value, the third value, the μ, the v, the s, and the M.

[0243] 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.

[0244] The operations and advantages of the communication apparatus can be referred to the operations and advantages of the method in the fourth aspect and the advantages of the method in the fourth aspect, and details are not described herein.

[0245] In a ninth aspect, a communication apparatus is provided, which includes a processor and a memory, the memory is configured to store a computer program, and the processor is configured to execute the computer program stored in the memory, so that the communication apparatus executes the method in any one of the first aspect.

[0246] In a tenth aspect, a communication apparatus is provided, which includes a processor and a memory, the memory is configured to store a computer program, and the processor is configured to execute the computer program stored in the memory, so that the communication apparatus executes the method in any one of the second aspect.

[0247] In an eleventh aspect, the present application provides a communication apparatus, comprising a processor and a memory, the memory being configured to store a computer program; the processor being configured to execute the computer program stored in the memory, so that the communication apparatus performs the method according to any one of the third aspect.

[0248] In a twelfth aspect, the present application provides a communication apparatus, comprising a processor and a memory, the memory being configured to store a computer program; the processor being configured to execute the computer program stored in the memory, so that the communication apparatus performs the method according to any one of the fourth aspect.

[0249] In a thirteenth aspect, the present application provides a computer readable storage medium, configured to store a computer program, when the computer program is executed, so that the method according to any one of the first aspect to the fourth aspect is implemented.

[0250] In a fourteenth aspect, the present application provides a computer program product comprising a computer program, when the computer program is executed, so that the method according to any one of the first aspect to the fourth aspect is implemented.

[0251] In a fifteenth aspect, the present application provides a communication system, comprising a first network device, a second network device, a first terminal device and a second terminal device, the first network device is configured to execute the steps in the first aspect, the second network device is configured to execute the steps in the second aspect, the first terminal device is configured to execute the steps in the third aspect, and the second terminal device is configured to execute the steps in the fourth aspect. BRIEF DESCRIPTION OF DRAWINGS

[0252] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the background art, the drawings needed to be used in the embodiments of the present application or the background art will be described below.

[0253] Fig. 1(a) is a schematic diagram of a perception scene provided by an embodiment of the present application;

[0254] Fig. 1(b) is a schematic diagram of another perception scene provided by an embodiment of the present application;

[0255] Fig. 1(c) is a schematic diagram of another perception scene provided by an embodiment of the present application;

[0256] Figure 2 Fig. 2 is a flow diagram of a communication method provided by an embodiment of the present application;

[0257] Figure 3 Fig. 3 is a schematic diagram of a third sequence provided by the present application;

[0258] Figure 4 is a schematic diagram of a sequence processing process provided by an embodiment of the present application;

[0259] Figure 5 is a schematic diagram of a third sequence provided by an embodiment of the present application;

[0260] Figure 6 is a schematic diagram of another third sequence provided by an embodiment of the present application;

[0261] Figure 7 is a schematic diagram of another third sequence provided by an embodiment of the present application;

[0262] Figure 8 is a schematic diagram of another third sequence provided by an embodiment of the present application;

[0263] Figure 9 is a schematic diagram of another third sequence provided by an embodiment of the present application;

[0264] Figure 10 is a structural schematic diagram of a communication apparatus provided by an embodiment of the present application;

[0265] Figure 11 is a structural schematic diagram of another communication apparatus provided by an embodiment of the present application;

[0266] Figure 12 is a structural schematic diagram of a network device provided by an embodiment of the present application;

[0267] Figure 13 is a structural schematic diagram of a terminal device provided by an embodiment of the present application. DETAILED DESCRIPTION

[0268] The key terms involved in the present application are explained as follows:

[0269] Awareness: awareness means detecting the parameters of a target in a physical environment, such as the position of the target, the speed of the target, etc. It can be understood as a radar detection system detecting a target by emitting electromagnetic waves and analyzing the echo signals from the reflection of the object. Awareness can also be called detection.

[0270] Sensing signal: a signal used for sensing (or detecting) a sensed target (or called target object). The sensing signal is also called a detection signal, a chirp signal, a radar signal, a radar sensing signal, a radar detection signal, or an environmental sensing signal, etc. The sensing signal can be a pulse signal or a signal in a wireless communication system. For example, the sensing signal can be an orthogonal frequency division multiplexing (OFDM) signal modulated on a subcarrier with a specific sequence, which can be any one of the following sequences: a Zadoff-Chu sequence (ZC sequence for short), a pseudo-random sequence, a predefined sequence, etc. The pseudo-random sequence includes any one of the following sequences: a maximum length linear feedback shift register sequence (m sequence for short), 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 quadrature amplitude modulation (QAM), etc.

[0271] Communication-sensing fusion signal: also called a communication-sensing fusion signal, a signal used for both communication and sensing, wherein the communication can be understood as that the signal carries communication data or a communication reference signal sequence to be transmitted between communication devices.

[0272] Communication signal: a signal used for communication between communication devices, for example, including a signal transmitted between network devices and terminal devices. The communication signal is, for example, a signal carried on a downlink physical shared channel (PDSCH).

[0273] The communication method provided in the embodiments of the present application can be applied to a fourth generation (4th generation, 4G) communication system, for example, a long term evolution (long term evolution, LTE) communication system, and can also be applied to a fifth generation (5th generation, 5G) communication system, for example, a 5G new radio (new radio, NR) communication system, or various communication systems evolved after 5G, for example, a sixth generation (6th generation, 6G) communication system. The method provided in the embodiments of the present application can also be applied to a Bluetooth system, a wireless fidelity (wireless fidelity, Wifi) system, a long range radio (long range radio, LoRa) system or a vehicle-to-everything (vehicle-to-everything, V2X) system. The method provided in the embodiments 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 systems.

[0274] The present application can be applied to the following scenarios:

[0275] As shown in FIG. 1(a), FIG. 1(a) is a schematic diagram of a sensing scenario provided in the embodiments of the present application. The network device transmits a sensing signal or a common sensing fusion signal, and the network device receives a backwave signal generated by the sensing signal or the common sensing fusion signal encountering a target in the environment, and then perceives the position, speed and other information of the target. It should be noted that the target in the environment and the terminal device can be the same device or different devices. For example, when the target in the environment and the terminal device are the same device, the network device A transmits a common sensing fusion signal for sensing, and the common sensing fusion signal also carries communication data or a communication reference signal sequence that the network device needs to transmit to the terminal device. When the target in the environment and the terminal device are different devices, the network device transmits a sensing signal to sense the target, and simultaneously transmits a communication signal in a frequency division multiplexing or space division multiplexing manner to communicate with the terminal device.

[0276] As shown in FIG. 1(b), FIG. 1(b) is a schematic diagram of another sensing scenario provided by the embodiments of the present application. The network device A transmits a sensing signal or a common sense fusion signal, and another network device B receives a backwave signal generated by the sensing signal or the common sense fusion signal encountering a target in the environment, and further senses the position, speed and other information of the target. It should be noted that the target in the environment and the terminal device can be the same device or different devices. For example, when the target in the environment and the terminal device are the same device, the network device A transmits the common sense fusion signal for sensing, and the common sense fusion signal carries communication data or a communication reference signal sequence that the network device needs to transmit to the terminal device. When the target in the environment and the terminal device are different devices, the network device A transmits a sensing signal to sense the target, and simultaneously transmits a communication signal in a frequency division multiplexing or space division multiplexing manner to communicate with the terminal device.

[0277] As shown in FIG. 1(c), FIG. 1(c) is a schematic diagram of another sensing scenario provided by the embodiments of the present application. The network device A transmits a common sense fusion signal, and the terminal device B receives a backwave signal generated by the common sense fusion signal encountering a target in the environment, and further senses the position, speed and other information of the target. It should be noted that the target in the environment and the terminal device B are different devices. The network device A transmits a common sense fusion signal for sensing, and the common sense fusion signal carries communication data or a communication reference signal sequence that the network device A needs to transmit to the terminal device B.

[0278] As shown in the above figure, the communication system of the present application file includes a network device and a terminal device. Wherein:

[0279] The network device is a network-side device with wireless transceiving function. 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 in a subsequent evolution of 3GPP, an access node in a WiFi system, a wireless relay node, a wireless backhaul node, etc. The network device can contain one or more co-sited or non-co-sited transmission reception points. For another example, the network device can include a central unit (CU), a distributed unit (DU), or a CU and a DU. In this way, part of the functions of the wireless access network device can be implemented through multiple network function entities. These network function entities can be network elements in a hardware device, or software functions running on a 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 the same type of base station, or different types of base stations. The base station can communicate with the terminal device, or communicate with the terminal device through a relay station. The network device in this application can also be a device with sensing function, which can emit sensing signals, receive and process echo signals reflected by targets in the environment. In the embodiments of this application, the communication apparatus used to implement the functions of the network device can be a network device, a network device with part of the functions of a base station, or an apparatus capable of supporting the network device to implement the functions, such as a chip system, which can be installed in the network device.

[0280] The types of the multiple network devices in the communication system can be the same or different. The network device in this application can also be a device with sensing function. For example, the network device can emit sensing signals, receive and process echo signals reflected by targets in the environment.

[0281] In embodiments of the present application, the network device can be a device in a wireless network. For example, the network device can be a device deployed in a radio access network to provide wireless communication functions for terminal devices. For example, the network device can be a radio access network (RAN) node that accesses terminal devices to a wireless network, which can also be referred to as an access network device. In embodiments of the present application, the communication apparatus used to implement the functions of the network device can be a network device, a network device with base station part functions, or a device capable of supporting the network device to implement the functions, such as a chip system, which can be installed in the network device or used in conjunction with the network device.

[0282] The terminal device is a user-side device with wireless transceiver function, which can be a fixed device, a mobile device, a handheld device (such as a mobile phone), a wearable device, a vehicle-mounted device, or a wireless device (such as a communication module, a modem, or a chip system, etc.) built into the above devices. The terminal device is used to connect people, things, machines, etc., and can be widely used in various scenarios, such as: cellular communication, device-to-device (D2D) communication, V2X communication, machine-to-machine / machine-type communications (M2M / MTC) communication, internet of things (IoT), virtual reality (VR), augmented reality (AR), industrial control, self driving, remote medical, smart grid, smart furniture, smart office, smart wear, smart transportation, smart city, unmanned aerial vehicle, robot, etc. For example, the terminal device can be a handheld terminal in cellular communication, a communication device in D2D, an internet of things device in MTC, a monitoring camera in smart transportation and smart city, or a communication device on an unmanned aerial vehicle, etc. The terminal device can also be referred to as user equipment (UE), user terminal, user apparatus, subscriber unit, subscriber station, terminal, access terminal, access station, UE station, remote station, mobile device, or wireless communication device, etc.

[0283] In the system shown in the present application, the network device can perceive the target by sending a perception signal or a common perception fusion signal. The target can be various tangible objects in the environment that can reflect electromagnetic waves, such as mountains, forests, or buildings, and can also include vehicles, unmanned aerial vehicles, pedestrians, terminal devices, and other movable objects. The target can also be referred to as a perceived target, a detected target, a perceived object, a detected object, or a perceived device, and the like, which is not limited by the embodiments of the present application.

[0284] The network device can use the communication signal in the existing 5G communication system as the common perception fusion signal. The communication signal in the 5G communication system is generated based on the OFDM modulation method, and its generation formula is:

[0285]

[0286] wherein, is the value on the resource element (RE) with frequency domain number k, time domain number l, antenna port p, and subcarrier spacing configuration μ, which carries a communication data or a reference signal sequence. It is worth noting that the value on the RE or subcarrier with number k of the communication signal is denotes the size of the resource grid; denotes the number of REs contained in each resource block; Δf denotes the subcarrier spacing; j denotes the imaginary unit; t denotes time; e denotes the natural constant, which is the base of the natural logarithm function, and its value is about 2.718281828459045.

[0287] However, the communication signal in the 5G communication system is specially designed for communication, and when this signal is used as a common perception fusion signal, the perception performance of the signal may not meet the perception requirements in different perception scenarios. For example, in some perception scenarios, the ranging accuracy of perception is required to be higher; in other perception scenarios, the false alarm performance of perception is required to be higher. In order to solve the above technical problems, the embodiments of the present application provide the following solutions.

[0288] Please refer to Figure 2 , Figure 2 is a flowchart of a communication method provided by an embodiment of the present application. The method includes but is not limited to the following steps:

[0289] S201, a first network device generates a first signal according to a first sequence, wherein the first sequence is a product of a second sequence and a third sequence.

[0290] ​The second sequence includes N second elements, and any two of the N second elements can be the same or different. The second sequence carries data, or the elements of the second sequence carry data. The data can 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 can convert a medium access control (MAC) layer transport block (including bit data of 0 and 1) into the second sequence. The conversion process includes at least one of channel coding, rate matching, scrambling, constellation mapping, discrete fourier transform (DFT) precoding (optional), and multi-antenna precoding. Each element of the second sequence is a complex number, including a real part and an imaginary part.

[0291] The second sequence can be associated with / correspond to a frequency domain resource, and the second sequence can also be associated with / correspond to a time domain resource. For example, the second sequence corresponds to a first frequency domain resource of a symbol / symbol. The second sequence is associated with the first frequency domain resource, and the first frequency domain resource includes N subcarriers (or N REs). Further, the i th element of the second sequence is associated with the i th subcarrier of the first frequency domain resource. It can be understood that 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. 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.

[0292] For example, the first time domain resource is an orthogonal frequency division multiplexing (OFDM) symbol, denoted as OFDM symbol l, and the OFDM symbol includes a plurality of REs or subcarriers, which are the first frequency domain resource. The i th element in the second sequence is associated with the RE or subcarrier with time domain number l and frequency domain number i.

[0293] 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, and the first sequence can be obtained by windowing the second sequence using the third sequence, where windowing refers to element-by-element multiplication of sequences.

[0294] 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 1st element is equal to the Nth element, the 2nd element is equal to the (N-1)th element, and so on.

[0295] In the 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 contiguous subcarriers (or one or more REs). The third sequence includes M sub-sequences, the t-th sub-sequence in the M sub-sequences corresponds to the t-th sub-frequency domain resource in the M sub-frequency domain resources, and the t-th sub-sequence in the M sub-sequences satisfies the t-th relationship in the M relationships. It can be seen that the third sequence is a segmented sequence, and each sub-sequence 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 sub-sequences. The 1st sub-sequence in the 3 sub-sequences corresponds to the 1st sub-frequency domain resource in the 3 sub-frequency domain resources, and the elements in the 1st sub-sequence satisfy the relationship 1. The 2nd sub-sequence in the 3 sub-sequences corresponds to the 2nd sub-frequency domain resource in the 3 sub-frequency domain resources, and the elements in the 2nd sub-sequence satisfy the relationship 2. The 3rd sub-sequence in the 3 sub-sequences corresponds to the 3rd sub-frequency domain resource in the 3 sub-frequency domain resources, and the elements in the 3rd sub-sequence satisfy the relationship 3. M=4 or other values, and the like, which will not be described here. By designing different segmented forms of the third sequence, the first signal generated based on the first sequence can meet the perception performance requirements of different perception scenarios.

[0296] It should be noted that the "relationship" in the t-th relationship in the M relationships satisfied by the t-th sub-sequence can be understood as a functional relationship, a mapping relationship, and the like. For example, the elements of the t-th sub-sequence and the number of elements in the t-th sub-sequence satisfy a functional relationship. w[i] is the third sequence, the third sequence includes 3 sub-sequences, the 1st sub-sequence is the element with a number of 0 to N1-1 in the third sequence, the elements of the 1st sub-sequence and the number of elements in the 1st sub-sequence satisfy a functional relationship h1, the 2nd sub-sequence is the element with a number of N1 to N2-1 in the third sequence, the elements of the 2nd sub-sequence and the number of elements in the 2nd sub-sequence satisfy a functional relationship h2, and the 3rd sub-sequence is the element with a number of N2 to N-1 in the third sequence, the elements of the 3rd sub-sequence and the number of elements in the 3rd sub-sequence satisfy a functional relationship h3.

[0297]

[0298] In particular, 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, the k, the k1and the k2are all integers greater than or equal to 1 and less than or equal to N, the k2is greater than the k1, and the k is greater than or equal to the k1and 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 of the k1th element in the third sequence and the k2th element in the third sequence, the third sequence w[i] is a concave sequence. The first sequence obtained by windowing the second sequence with the concave third sequence can improve the perceived ranging accuracy.

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

[0300] It should be noted that since the ith element of the second sequence corresponds to the ith subcarrier in the first frequency domain resource, and the ith element of the first sequence is the product of the ith element of the second sequence and the ith element of the third sequence, it can be considered that the ith element of the third sequence corresponds to the ith subcarrier in the first frequency domain resource, and the ith element of the first sequence corresponds to the ith subcarrier in the first frequency domain resource. In addition, in order 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 ith element in the second sequence by the ith element in the third sequence to obtain the first sequence, the first network device can map the first sequence to the first frequency domain resource. Further, the ith element of the first sequence can be mapped to the ith subcarrier in the first frequency domain resource. For example, if the first time domain resource is an OFDM symbol numbered l, denoted as OFDM symbol l, mapping the ith element of the first sequence to the ith subcarrier in the first frequency domain resource can be understood as that the element numbered i in the first sequence is mapped to, carried on, or the value of the resource element numbered l in the time domain and numbered 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 to the first frequency domain resource. The expression of the OFDM baseband signal is:​

[0302]

[0303] wherein s(t) is the OFDM baseband signal, b[z] represents an element numbered z in the first sequence, is the number of subcarriers contained in the first frequency domain resource. Δf represents the subcarrier spacing, j represents the imaginary unit, t represents time, e represents the natural constant, and is the base number of the natural logarithm function, with a value of about 2.718281828459045.

[0304] Finally, the first network device can generate a first signal after performing up-conversion and other processing on the OFDM baseband signal. According to whether the first sequence carries data, the first signal can be a fusion signal or a perception signal.

[0305] Optionally, the second sequence can not carry data, or the elements of the second sequence do not carry data. In the case where the second sequence carries data or the elements of the second sequence carry data, the first sequence also carries data or the elements of the first sequence also carry data, and then the first signal is a fusion signal. In the case where the second sequence does not carry data or the elements of the second sequence do not carry data, the first sequence also does not carry data or the elements of the first sequence do not carry data, and then the first signal is a perception signal.

[0306] For example, as shown in FIG. 1, Figure 4 Figure 4 ​is a schematic diagram of a sequence processing process provided by an embodiment of the present application. Elements numbered i in the second sequence are denoted as a[i], elements numbered i in the first sequence are denoted as b[i], and elements numbered i in the third sequence are 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, and the element numbered i in the first sequence can be expressed as: b[i] = a[i] x w[i]. Then, the first sequence b[0], b[1], …, b[N-1] is subjected to inverse fast Fourier transform (IFFT), and the first sequence after the inverse fast Fourier transform is subjected to parallel-serial conversion to obtain an OFDM baseband signal. The windowing can also be referred to as 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 be 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 the first signal is transmitted through an antenna.

[0307] The following specifically introduces several forms of the third sequence.

[0308] In the present application, the first frequency domain resource includes M non-overlapping sub-frequency domain resources, and each sub-frequency domain resource includes one or more subcarriers. The third sequence includes M sub-sequences, and each sub-sequence includes one or more elements. The tth sub-sequence in the M sub-sequences corresponds to the tth sub-frequency domain resource in the M sub-frequency domain resources, and the tth sub-sequence in the M sub-sequences satisfies the tth relationship in the M relationships. Wherein, the starting frequency of the t1th sub-frequency domain resource in the M sub-frequency domain resources is less than the starting frequency of the t2th 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.

[0309] Optionally, the values of the elements in at least one sub-sequence in the M sub-sequences of the third sequence are all the same, that is, the values of the elements in the at least one sub-sequence are constant.

[0310] In the case of M=3, the first frequency domain resource includes a first sub-frequency domain resource, a second sub-frequency domain resource and a third sub-frequency domain resource. The first sub-frequency domain resource is the first sub-carrier to the f1th sub-carrier in the first frequency domain resource, the second sub-frequency domain resource is the f1+1th sub-carrier to the f2th sub-carrier in the first frequency domain resource, and the third sub-frequency domain resource is the f2+1th sub-carrier to the Nth sub-carrier in the first frequency domain resource. Wherein, the f1 and the f2 are both 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 first sub-frequency domain resource is the frequency corresponding to the first sub-carrier, the starting frequency of the second sub-frequency domain resource is the frequency corresponding to the f1+1th sub-carrier, and the starting frequency of the third sub-frequency domain resource is the frequency corresponding to the f2+1th sub-carrier. 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. Furthermore, the first sub-sequence in the M sub-sequences corresponds to the first sub-frequency domain resource in the M sub-frequency domain resources, the second sub-sequence in the M sub-sequences corresponds to the second sub-frequency domain resource in the M sub-frequency domain resources, and the third sub-sequence in the M sub-sequences corresponds to the third sub-frequency domain resource in the M sub-frequency domain resources. Specifically, in the case of M=3, the third sequence can include the following forms:

[0311] In an optional manner, the first sub-sequence in the M sub-sequences satisfies a first relationship in the M relationships, the first relationship is that the values of the elements in the first sub-sequence are all first values. The second sub-sequence in the M sub-sequences satisfies a second relationship in the M relationships, the second relationship is that the values of the elements in the second sub-sequence are all second values. The third sub-sequence in the M sub-sequences satisfies a third relationship in the M relationships, the third relationship is that the values of the elements in the third sub-sequence are all third values.

[0312] Optionally, the first value and the third value are both greater than the second value.

[0313] Optionally, the number of sub-carriers included in the first sub-frequency domain resource divided by the number N of all sub-carriers included in the first frequency domain resource is less than 0.25, or the number of sub-carriers included in the third sub-frequency domain resource divided by the number N of all sub-carriers included in the first frequency domain resource is less than 0.25, or the sum of the number of sub-carriers included in the first sub-frequency domain resource and the third sub-frequency domain resource divided by the number N of all sub-carriers included in the first frequency domain resource is less than 0.5.

[0314] Optionally, the first value is equal to the third value.

[0315] 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.

[0316] For example, such as Figure 5 As shown, Figure 5 This is a schematic diagram of a third sequence provided in an embodiment of this application. The first frequency domain resource is divided into three consecutive sub-frequency domain resources by a first frequency domain separator A and a second frequency domain separator B. The first frequency domain separator A and the second frequency domain separator B can be represented by subcarrier numbers, resource block (RB) numbers, or resource block group (RBG) numbers; this application does not impose any restrictions. Wherein, the first frequency domain separator A is less than the second frequency domain separator B. The portion of the first frequency domain resource with a number less than the first frequency domain separator A is called the first sub-frequency domain resource; the portion of the first frequency domain resource with a number greater than or equal to the first frequency domain separator A and less than or equal to the second frequency domain separator B is called the second sub-frequency domain resource; and the portion of the first frequency domain resource with a number greater than the second frequency domain separator 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 relation: all elements in the first subsequence have the first value. The second subsequence corresponds to the second sub-frequency domain resource, and the second subsequence satisfies the second relation: all elements in the second subsequence have the second value. The third subsequence corresponds to the third sub-frequency domain resource, and the third subsequence satisfies the third relation: all elements in the third subsequence have the third value. Examples of the first, second, and third values ​​are given below.

[0317] The first and third values ​​can both be equal to The second value can be equal to 0.4082. The first frequency domain resource includes 792 subcarriers. The first sub-frequency domain resource includes subcarriers numbered 0 to 179, that is, 180 subcarriers. The second sub-frequency domain resource includes subcarriers numbered 180 to 611, that is, 432 subcarriers. The third sub-frequency domain resource includes subcarriers numbered 612 to 791, that is, 180 subcarriers. It can be verified that the first sub-frequency domain resource includes 180 subcarriers. The value of the first sub-frequency domain resource (180 subcarriers) divided by the number of subcarriers in the first frequency domain resource (792 subcarriers) is approximately 0.227, which is less than 0.25.

[0318] Alternatively, the first value and the third value can both equal 2, the second value can equal 0.577, the first frequency domain resource includes 792 subcarriers, the first sub-frequency domain resource includes subcarriers numbered 0 to 71, i.e., the first sub-frequency domain resource includes 72 subcarriers, the second sub-frequency domain resource includes subcarriers numbered 72 to 719, i.e., the second sub-frequency domain resource includes 648 subcarriers, and the third sub-frequency domain resource includes subcarriers numbered 720 to 791, i.e., the third sub-frequency domain resource includes 72 subcarriers. It can be verified that the first sub-frequency domain resource includes 72 subcarriers, and the value of 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.

[0319] Alternatively, the first value and the third value can both equal 2, the second value can equal 0.577, the first frequency domain resource includes 792 subcarriers, the first sub-frequency domain resource includes subcarriers numbered 0 to 71, i.e., the first sub-frequency domain resource includes 72 subcarriers, the second sub-frequency domain resource includes subcarriers numbered 72 to 719, i.e., the second sub-frequency domain resource includes 648 subcarriers, and the third sub-frequency domain resource includes subcarriers numbered 720 to 791, i.e., the third sub-frequency domain resource includes 72 subcarriers. It can be verified that the first sub-frequency domain resource includes 72 subcarriers, and the value of 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.

[0320] In another implementation, the first sub-sequence of the M sub-sequences satisfies a first relationship of the M relationships, the first relationship being that a k1th element in the first sub-sequence is greater than or equal to a k2th element in the first sub-sequence. The second sub-sequence of the M sub-sequences satisfies a second relationship of the M relationships, the second relationship being that a kth element in the second sub-sequence is greater than or equal to a minimum of a k1th element in the second sub-sequence and a k2th element in the second sub-sequence. The third sub-sequence of the M sub-sequences satisfies a third relationship of the M relationships, the third relationship being that a k1th element in the third sub-sequence is less than or equal to a k2th element in the third sub-sequence. The k, the k1, and the k2 are 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 the k2. It can be seen that the first sub-sequence is a monotonically decreasing sequence, the second sub-sequence is an up-convex sequence, and the third sub-sequence is a monotonically increasing sequence.

[0321] ​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.

[0322] For example, as shown in Figure 6 Figure 6 is another schematic diagram of a third sequence provided by an embodiment of the present application. A first frequency domain resource is divided into three continuous sub-frequency domain resources by a first frequency domain separation point A and a 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 can be represented by resource block (RB) numbers, or can be represented by resource block group (RBG) numbers, which are not limited by the present application. The first frequency domain separation point A is smaller than the second frequency domain separation point B. A part of the first frequency domain resource with a number smaller than the first frequency domain separation point A is referred to as a first sub-frequency domain resource, a part of the first frequency domain resource with a number greater than or equal to the first frequency domain separation point A and smaller than or equal to the second frequency domain separation point B is referred to as a second sub-frequency domain resource, and a part of the first frequency domain resource with a number greater than the second frequency domain separation point B is referred to as a third sub-frequency domain resource. The first sub-sequence is associated with the first sub-frequency domain resource, the first sub-sequence is a monotonically decreasing sequence, the second sub-sequence is associated with the second sub-frequency domain resource, the second sub-sequence is a convex form sequence, and the third sub-sequence is associated with the third sub-frequency domain resource, and the third sub-sequence is a monotonically increasing sequence.

[0323] In another implementation manner, a first sub-sequence in the M sub-sequences satisfies a first relationship in the M relationships, the first relationship is that values of elements in the first sub-sequence are all first values. A second sub-sequence in the M sub-sequences satisfies a second relationship in the M relationships, the second relationship is that a value of an element in the second sub-sequence satisfies a polynomial function of a square of (k-(N-1) / 2), the k is a sequence number of the element in the third sequence in the third sub-sequence. A third sub-sequence in the M sub-sequences satisfies a third relationship in the M relationships, the third relationship is that values of elements in the third sub-sequence are all third values.

[0324] The polynomial function can be represented as y=a0+a1x+a2x 2 +……+a n x n , where a0, a1, a2, …, a n ​is a constant, x is an independent variable, and y is a dependent variable. The phrase "the value of an element in the second sub-sequence satisfies a polynomial function of the square of (k-(N-1) / 2)" means that the square of (k-(N-1) / 2) is brought into x, and the value of the element with the serial number k is y=a0+a1(k-(N-1) / 2) 2 +a2(k-(N-1) / 2) 4 +…+a n (k-(N-1) / 2) 2n .

[0325] Optionally, the first value is equal to the third value.

[0326] 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.

[0327] Optionally, the element with the serial number i in the third sequence is equal to the element with the serial number N-i-1. For example, when N=9, the first sub-sequence includes the element with the serial number 0, the element with the serial number 1, and the element with the serial number 2 in the third sequence. The second sub-sequence includes the element with the serial number 3, the element with the serial number 4, and the element with the serial number 5 in the third sequence. The third sub-sequence includes the element with the serial number 6, the element with the serial number 7, and the element with the serial number 8 in the third sequence. The elements in the first sub-sequence are all 1, the elements in the third sub-sequence are all 1, the element with the serial number 0 is the same as the element with the serial number 8, the element with the serial number 1 is the same as the element with the serial number 7, and the element with the serial number 2 is the same as the element with the serial number 6. The element with the serial number 3 satisfies (3-(9-1) / 2)=-1, the element with the serial number 5 satisfies (5-(9-1) / 2)=1, and the values calculated by the polynomial function of the square are the same. It can be seen that the third sequence is a symmetric sequence.

[0328] For example, as shown in FIG. 1, Figure 7 Figure 7 ​is another 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 a first frequency domain separation point A and a 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 can be represented by RB numbers, or can be represented by RBG numbers, which are not limited in the present application. Among them, the first frequency domain separation point A is less than the second frequency domain separation point B. The part of the first frequency domain resource with a number less than the first frequency domain separation point A is referred to as 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 referred to as the second sub-frequency domain resource. The part of the first frequency domain resource with a number greater than the second frequency domain separation point B is referred to as the third sub-frequency domain resource. The first sub-sequence corresponds to the first sub-frequency domain resource, and the first sub-sequence satisfies the first relationship. The first relationship: the values of the elements in the first sub-sequence are all the first value. The second sub-sequence corresponds to the second sub-frequency domain resource, and the second sub-sequence satisfies the second relationship. The second relationship: the values of the elements in the second sub-sequence satisfy a polynomial function of the square of (k-(N-1) / 2). The third sub-sequence corresponds to the third sub-frequency domain resource, and the third sub-sequence satisfies the third relationship. The third relationship: the values of the elements in the third sub-sequence are all the third value.

[0329] Among them, the polynomial function of the square of (k-(N-1) / 2) is a function relationship The values of the elements in the second sub-sequence satisfy The function relationship, and the k is the sequence number of the element in the second sub-sequence in the third sequence. That is, for the element with the sequence number k in the third sequence and the element in the second sub-sequence, the value of the element is Among them, 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 function relationship are: d0=0.545, d1=912.20, and d2=339.93. Or, d0=0.545, d1=1164.52, and d2=820.97. Or, d0=0.545, d1=1416.84, and d2=1302.00.

[0330] It should be noted that the value of the first frequency domain separation point can be 0 (the number of subcarriers), and the value of the second frequency domain separation point can be N-1 (the number of subcarriers). In this case, the first sub-frequency domain resource and the third sub-frequency domain resource are empty sets, and the third sequence is only determined by the above polynomial function.

[0331] In yet another implementation, the first frequency domain resource is divided into three continuous sub-frequency domain resources by a first frequency domain separation point A and a 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 number of subcarriers, or by the number of RBs, or by the number of RBGs, which is not limited in the application. Wherein, the first frequency domain separation point A is less than the second frequency domain separation point B, the part of the first frequency domain resource with a number less than the first frequency domain separation point A is referred to as 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 referred to as 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 referred to as the third sub-frequency domain resource.

[0332] Wherein, the first sub-sequence corresponds to the first sub-frequency domain resource, the first sub-sequence in the M sub-sequences satisfies the first relationship in the M relationships, and the first relationship is that the values of the elements in the first sub-sequence are all first values. The second sub-sequence corresponds to the second sub-frequency domain resource, the second sub-sequence in the M sub-sequences satisfies the second relationship in the M relationships, and the second relationship is that the values of the elements in the second sub-sequence satisfy a function relationship, wherein k is the sequence number of the element in the second sub-sequence in the third sequence, μ, v, s are all parameters, μ is less than 0, v is greater than 0, and s is greater than 0, The third sub-sequence corresponds to the third sub-frequency domain resource, the third sub-sequence in the M sub-sequences satisfies the third relationship in the M relationships, and the third relationship is that the values of the elements in the third sub-sequence are all third values.

[0333] Optionally, the first value is equal to the third value.

[0334] 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.

[0335] It should be noted that the value of the first frequency domain separation point can be 0 (the number of subcarriers), and the value of the second frequency domain separation point can be N-1 (the number of subcarriers). In this case, the first sub-frequency domain resource and the third sub-frequency domain resource are empty sets, and the third sequence is only determined by the above function relationship.

[0336] In the case of M=5, the first frequency domain resource includes a first sub-frequency domain resource, a second sub-frequency domain resource, a third sub-frequency domain resource, a fourth sub-frequency domain resource and a fifth sub-frequency domain resource, the first sub-frequency domain resource is the first sub-carrier to the f1th sub-carrier in the first frequency domain resource, the second sub-frequency domain resource is the f1+1th sub-carrier to the f2th sub-carrier in the first frequency domain resource, the third sub-frequency domain resource is the f2+1th sub-carrier to the f3th sub-carrier in the first frequency domain resource, the fourth sub-frequency domain resource is the f3+1th sub-carrier to the f4th sub-carrier in the first frequency domain resource, and the fifth sub-frequency domain resource is the f4+1th sub-carrier to the Nth sub-carrier 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 sub-carrier, the starting frequency of the second sub-frequency domain resource is the frequency corresponding to the f1+1th sub-carrier, the starting frequency of the third sub-frequency domain resource is the frequency corresponding to the f2+1th sub-carrier, the starting frequency of the fourth sub-frequency domain resource is the frequency corresponding to the f3+1th sub-carrier, and the starting frequency of the fifth sub-frequency domain resource is the frequency corresponding to the f4+1th sub-carrier. 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.

[0337] In addition, the first sub-sequence in the M sub-sequences corresponds to the first sub-frequency domain resource in the M sub-frequency domain resources, the second sub-sequence in the M sub-sequences corresponds to the second sub-frequency domain resource in the M sub-frequency domain resources, the third sub-sequence in the M sub-sequences corresponds to the third sub-frequency domain resource in the M sub-frequency domain resources, the fourth sub-sequence in the M sub-sequences corresponds to the fourth sub-frequency domain resource in the M sub-frequency domain resources, and the fifth sub-sequence in the M sub-sequences corresponds to the fifth sub-frequency domain resource in the M sub-frequency domain resources. Specifically, in the case of M=5, the third sequence can include the following forms:

[0338] In one implementation, the first subsequence of the M subsequences satisfies the first relation of the M relations, wherein the first relation is that all elements in the first subsequence have a first value. The second subsequence of the M subsequences satisfies the second relation of the M relations, wherein all elements in the second subsequence have a value of 1. The third subsequence of the M subsequences satisfies the third relation of the M relations, wherein all elements in the third subsequence have a second value. The fourth subsequence of the M subsequences satisfies the fourth relation of the M relations, wherein all elements in the fourth subsequence have a value of 1. The fifth subsequence of the M subsequences satisfies the fifth relation of the M relations, wherein all elements in the fifth subsequence have a third value.

[0339] Optionally, both the first value and the third value are greater than 1, and the second value is greater than 0 and less than or equal to 1.

[0340] Optionally, the first value is equal to the third value.

[0341] Optionally, the number of subcarriers included in the first sub-frequency domain resource is equal to the number of subcarriers included in the fifth sub-frequency domain resource, and / or, the number of subcarriers included in the second sub-frequency domain resource is equal to the number of subcarriers included in the fourth sub-frequency domain resource.

[0342] For example, such as Figure 8 As shown, Figure 8 This is a schematic diagram of another third sequence provided in an embodiment of this application. The first frequency domain resource is divided into five consecutive sub-frequency domain resources by a first frequency domain separator A, a second frequency domain separator B, a third frequency domain separator C, and a fourth frequency domain separator D. The frequency domain separators can be represented by subcarrier numbers, RB numbers, or RBG numbers; this application does not impose any restrictions. Wherein, the first frequency domain separator A is less than the second frequency domain separator B, the second frequency domain separator B is less than the third frequency domain separator C, and the third frequency domain separator C is less than the fourth frequency domain separator D. The portion of the first frequency domain resource with a number less than the first frequency domain separator point A is called the first sub-frequency domain resource. The portion of the first frequency domain resource with a number greater than or equal to the first frequency domain separator point A and less than the second frequency domain separator point B is called the second sub-frequency domain resource. The portion of the first frequency domain resource with a number greater than or equal to the second frequency domain separator point B and less than the third frequency domain separator point C is called the third sub-frequency domain resource. The portion of the first frequency domain resource with a number greater than or equal to the third frequency domain separator point C and less than the fourth frequency domain separator point D is called the fourth sub-frequency domain resource. The portion of the first frequency domain resource with a number greater than or equal to the fourth frequency domain separator point D is called the fifth sub-frequency domain resource.

[0343] The first sub-sequence corresponds to the first sub-frequency domain resource, the first sub-sequence in the M sub-sequences satisfies the first relationship in the M relationships, and the first relationship is that the values of the elements in the first sub-sequence are all the first value. The second sub-sequence corresponds to the second sub-frequency domain resource, the second sub-sequence in the M sub-sequences satisfies the second relationship in the M relationships, and the second relationship is that the values of the elements in the second sub-sequence are all 1. The third sub-sequence corresponds to the third sub-frequency domain resource, the third sub-sequence in the M sub-sequences satisfies the third relationship in the M relationships, and the third relationship is that the values of the elements in the first sub-sequence are all the second value. The fourth sub-sequence corresponds to the fourth sub-frequency domain resource, the fourth sub-sequence in the M sub-sequences satisfies the fourth relationship in the M relationships, and the fourth relationship is that the values of the elements in the fourth sub-sequence are all 1. The fifth sub-sequence corresponds to the fifth sub-frequency domain resource, the fifth sub-sequence in the M sub-sequences satisfies the fifth relationship in the M relationships, and the values of the elements in the fifth sub-sequence are all the third value, the first value and the third value are both greater than 1, and the second value is less than 1.

[0344] In another implementation, the first sub-sequence in the M sub-sequences satisfies the first relationship in the M relationships, and the first relationship is that the values of the elements in the first sub-sequence are all the first value. The second sub-sequence in the M sub-sequences satisfies the second relationship in the M relationships, and the second relationship is that the values of the elements in the second sub-sequence are all 1. The third sub-sequence in the M sub-sequences satisfies the third relationship in the M relationships, and the third relationship is that the values of the elements in the third sub-sequence satisfy a polynomial function of the square of (k-(N-1) / 2), and the polynomial function is described above. The k is the sequence number of the element in the third sequence. The fourth sub-sequence in the M sub-sequences satisfies the fourth relationship in the M relationships, and the fourth relationship is that the values of the elements in the fourth sub-sequence are all 1. The fifth sub-sequence in the M sub-sequences satisfies the fifth relationship in the M relationships, and the values of the elements in the fifth sub-sequence are all the third value, and the first value and the third value are both greater than 1.

[0345] Optionally, the first value is equal to the third value.

[0346] Optionally, the number of subcarriers included in the first sub-frequency domain resource is equal to the number of subcarriers included in the fifth sub-frequency domain resource, and / or the number of subcarriers included in the second sub-frequency domain resource is equal to the number of subcarriers included in the fourth sub-frequency domain resource.

[0347] For example, asFigure 9 is shown, Figure 9 is another schematic diagram of a third sequence provided by an embodiment of the present application. A first frequency domain resource is divided into five continuous 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 points can be represented by subcarrier numbers, RB numbers, or RBG numbers, which are not limited by the present application. Among them, the first frequency domain separation point A is less than the second frequency domain separation point B, the second frequency domain separation point B is less than the third frequency domain separation point C, and the third frequency domain separation point C is less than the fourth frequency domain separation point D. The part of the first frequency domain resource with a number less than the first frequency domain separation point A is referred to as 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 the second frequency domain separation point B is referred to as the second sub-frequency domain resource, the part of the first frequency domain resource with a number greater than or equal to the second frequency domain separation point B and less than the third frequency domain separation point C is referred to as the third sub-frequency domain resource, the part of the first frequency domain resource with a number greater than or equal to the third frequency domain separation point C and less than the fourth frequency domain separation point D is referred to as the fourth sub-frequency domain resource, and the part of the first frequency domain resource with a number greater than or equal to the fourth frequency domain separation point D is referred to as the fifth sub-frequency domain resource.

[0348] Among them, the first sub-sequence corresponds to the first sub-frequency domain resource, the first sub-sequence satisfies the first relationship, the first relationship: the values of the elements in the first sub-sequence are all the first value, the second sub-sequence corresponds to the second sub-frequency domain resource, the second sub-sequence satisfies the second relationship, the second relationship: the values of the elements in the first sub-sequence are all 1, the third sub-sequence corresponds to the third sub-frequency domain resource, the third sub-sequence satisfies the third relationship, the third relationship: the values of the elements in the third sub-sequence satisfy a polynomial function of the square of (k-(N-1) / 2), the fourth sub-sequence corresponds to the fourth sub-frequency domain resource, the fourth sub-sequence satisfies the fourth relationship, the fourth relationship: the values of the elements in the fourth sub-sequence are all 1, the fifth sub-sequence corresponds to the fifth sub-frequency domain resource, the fifth sub-sequence satisfies the fifth relationship, the fifth relationship: the values of the elements in the fifth sub-sequence are all the third value. The first value and the third value are both greater than 1.

[0349] Among them, the polynomial function of the square of (k-(N-1) / 2) is a function relationship The values of the elements in the third sub-sequence satisfy The function relationship, and k is the sequence number of the element in the third sequence. That is, for the element with the sequence number k in the third sequence and the element in the second sub-sequence, the value of the element is Among them, 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.

[0350] In another implementation, the first frequency domain resource is divided into five continuous 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 points can be represented by subcarrier numbers, RB numbers, or RBG numbers, which are not limited in the application. The first frequency domain separation point A is less than the second frequency domain separation point B, the second frequency domain separation point B is less than the third frequency domain separation point C, and the third frequency domain separation point C is less than the fourth frequency domain separation point D. The part of the first frequency domain resource with a number less than the first frequency domain separation point A is referred to as 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 the second frequency domain separation point B is referred to as the second sub-frequency domain resource, the part of the first frequency domain resource with a number greater than or equal to the second frequency domain separation point B and less than the third frequency domain separation point C is referred to as the third sub-frequency domain resource, the part of the first frequency domain resource with a number greater than or equal to the third frequency domain separation point C and less than the fourth frequency domain separation point D is referred to as the fourth sub-frequency domain resource, and the part of the first frequency domain resource with a number greater than or equal to the fourth frequency domain separation point D is referred to as the fifth sub-frequency domain resource.

[0351] The first sub-sequence corresponds to the first sub-frequency domain resource, the first sub-sequence in the M sub-sequences satisfies the first relationship in the M relationships, and the first relationship is that the values of the elements in the first sub-sequence are all the first value. The second sub-sequence corresponds to the second sub-frequency domain resource, the second sub-sequence in the M sub-sequences satisfies the second relationship in the M relationships, and the second relationship is that the values of the elements in the second sub-sequence are all 1. The third sub-sequence corresponds to the third sub-frequency domain resource, the third sub-sequence in the M sub-sequences satisfies the third relationship in the M relationships, and the third relationship is that the values of the elements in the third sub-sequence satisfy The function relationship is that The k is the sequence number of the element in the third sub-sequence in the third sequence, the μ is less than 0, the v is greater than 0, and the s is greater than 0. The fourth sub-sequence corresponds to the fourth sub-frequency domain resource, the fourth sub-sequence in the M sub-sequences satisfies the fourth relationship in the M relationships, and the fourth relationship is that the values of the elements in the fourth sub-sequence are all 1. The fifth sub-sequence corresponds to the fifth sub-frequency domain resource, the fifth sub-sequence in the M sub-sequences satisfies the fifth relationship in the M relationships, and the values of the elements in the fifth sub-sequence are all the third value. The first value and the third value are both greater than 1.

[0352] Optionally, the first value is equal to the third value.

[0353] Optionally, the number of subcarriers included in the first sub-frequency domain resource is equal to the number of subcarriers included in the fifth sub-frequency domain resource. And / or, the number of subcarriers included in the second sub-frequency domain resource is equal to the number of subcarriers included in the fourth sub-frequency domain resource.

[0354] It should be noted that the number M of sub-frequency domain resources included in the first frequency domain resource or the number M of sub-sequences included in the third sequence can also be equal to other values. When M is equal to other values, similar to the case where M=3 or M=5 of the above-mentioned sub-frequency domain resources or sub-sequences, as long as the third sequence is a segmented sequence, it is within the scope of protection of the present application, which will not be repeated here.

[0355] S202, the first network device sends the first signal.

[0356] S203, the first network device / second network device / second terminal device receives the echo signal.

[0357] The first signal can be a sensing and communication fusion signal or a communication and sensing fusion signal, and the first signal can be used for sensing or communication. For example, 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 downlink data transmission. The first signal sent by the first network device produces an echo signal after being reflected by a target in the environment. The first network device, or the second network device, or the second terminal device can receive the echo signal on the first frequency domain resource.

[0358] For example, the first signal is a demodulation reference signal for sensing, and the signal is used for sensing and channel estimation. For another example, the first signal is a channel state information reference signal for sensing, and the signal is used for sensing and channel measurement. For another example, the first signal is a signal carried on a physical downlink shared channel (PDSCH) for sensing, and the signal is used for sensing and downlink data transmission.

[0359] In the scenario shown in FIG. 1(a), the first network device sends the first signal and receives the echo signal produced by the reflection of the target in the environment on the first frequency domain resource. The first network device can sense the position, speed, etc. of the target according to the first signal and the echo signal.

[0360] In the scenario shown in FIG. 1(b), the first network device transmits a first signal, and the first terminal device receives the first signal. The first signal carries data or a reference signal sequence transmitted by the first network device to the first terminal device, and the reference signal sequence can be used for channel measurement, channel estimation, etc. Thus, the communication function of the first signal is realized. In addition, the first network device transmits the first signal, and the second network device receives the echo signal of the first signal, thereby realizing the sensing function of the first signal.

[0361] Optionally, the first network device can transmit first information to the second network device and / or the first terminal device, and the first information is used to indicate the 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. In addition, the first terminal device can obtain the second sequence from the first signal based on the third sequence. Further, the first terminal device can demodulate the first signal to obtain the first sequence, and then process the first sequence by using the third sequence to obtain the second sequence.

[0362] The parameter information includes multiple sets of parameters used to determine the third sequence. The 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; the third set of parameters includes: the first value a3, the second value b3, and the third value c3 of the third set; and 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; 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; and 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. Each set of parameters can be used to determine the above-mentioned M (M=3) relationships, and different values in each set of parameters can be used to determine different relationships.

[0363] Table 1

[0364]

[0365] Table 2

[0366]

[0367] The parameter information includes at least one of the first value, the second value, the third value, the μ, the v, the s and the M. Optionally, the parameter information can further include the number of subcarriers or the number of RBs occupied by each of the M sub-frequency domain resources. Alternatively, the parameter information can further include the number of subcarriers or the number of RBs occupied by the first of the M sub-frequency domain resources. Alternatively, the parameter information can further include frequency domain separation points (such as the first frequency domain separation point A and the second frequency domain separation point B) and the like.

[0368] For example, in the case of M=3, the parameter information of the third sequence can include the following cases: 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 the 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 the parameters μ, v, s.

[0369] In the case of M=5, the parameter information of the third sequence can include the following cases: 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 the 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 the parameters μ, v, s.

[0370] 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 represents that the first value a1, the second value b1 and the third value c1 of the first set are used. The values of the elements in the first sub-sequence are all a1, the values of the elements in the second sub-sequence are all b1, and the values of the elements in the third sub-sequence are all c1. When the value of the first information is 01, it represents that the first value a2, the second value b2 and the third value c2 of the second set are used, the values of the elements in the first sub-sequence are all a2, the values of the elements in the second sub-sequence are all b2, and the values of the elements in the third sub-sequence are all c2. Other similar cases will not be described one by one here.

[0371] Optionally, the parameter information can be predefined or notified by high layer signaling (e.g., RRC signaling). For example, as shown in Table 2, a first set of predefined parameters includes: a first value a1, a third value b1, d0=e1, d1=e2, d2=e3 of the first set; a second set of parameters includes: a first value a2, a third value b2, d0=e4, d1=e5, d2=e6 of the second set; a third set of parameters includes: a first value a3, a third value b3, d0=e7, d1=e8, d2=e9 of the third set. A fourth set of parameters includes: a first value a4, a third value b4, d0=e10, d1=e11, d2=e12 of the fourth set. The third sequence of multiple sets of parameters is notified by RRC signaling, and then one or more sets of parameters in the third sequence are indicated by the first information.

[0372] The first terminal device receives the first signal, demodulates the first signal to obtain the first sequence, and determines the third sequence according to the received first information. Then, the first terminal device processes the first sequence according to the third sequence to obtain the second sequence, and further obtains the communication data or the communication reference sequence carried by the second sequence, thereby realizing communication between the first network device and the first terminal device. Optionally, the second network device can determine the third sequence according to the first information. In the case where the second sequence is known to the first network device and the second network device, different third sequences can be designed, multiplied by the second sequence to obtain the first sequence, and different first signals are generated by different first sequences to adapt to different sensing performance requirements, while enabling the first network device and the first terminal device to communicate.

[0373] In the scenario shown in FIG. 1(c), the first network device transmits the first signal, and the second terminal device can receive the first signal on the first frequency domain resource to obtain the communication data or the communication reference signal sequence transmitted by the first network device to the second terminal device, i.e., use the first signal to realize communication between the first network device and the second terminal device. The first signal carries data or a reference signal sequence transmitted 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 target in the environment, and estimate the position, speed, etc. of the target in the environment according to the echo signal.

[0374] Optionally, the first network device can send the first terminal device the first information, which is used to indicate the parameter information of the third sequence. The parameter information includes at least one of the first value, the second value, the third value, the μ, the v, the s and the M. Optionally, the parameter information can also include the number of subcarriers or the number of RBs occupied by each of the M sub-frequency domain resources. Alternatively, the parameter information can also include the number of subcarriers or the number of RBs occupied by the first of the M sub-frequency domain resources. Alternatively, the parameter information can also include the frequency domain separation points (such as the frequency domain separation point A and the frequency domain separation point B) and the like. Similar to the above, this will not be described here.

[0375] The second terminal device determines the third sequence according to the first information, processes the first signal based on the third sequence to obtain a second sequence, and further acquires the communication data or the communication reference sequence carried by the second sequence to realize 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 sensing. Different third sequences generate different first sequences, and further generate different first signals. Different first signals have different sensing performances, so that the second terminal device can achieve different sensing performances when receiving the echo signal for sensing processing.

[0376] In the embodiments of the present application, the second sequence carrying data is multiplied by a third sequence in a segmented form to generate a common-sensing fusion signal. By designing different forms of the third sequence, the common-sensing fusion signal generated can have different properties to meet different sensing and communication requirements. For example, when the third sequence is a concave sequence, the root mean square bandwidth of the common-sensing fusion signal can be increased, thereby improving the ranging accuracy of the common-sensing fusion signal; when the third sequence includes a convex sub-sequence, the peak sidelobe ratio of the distance spectrum obtained by sensing using the common-sensing fusion signal is lower, thereby reducing the false alarm probability of sensing.

[0377] It can be understood that the methods and operations implemented by the terminal device in each of the above method embodiments can also be implemented by components (such as chips or circuits) that can be used for the terminal device, and the methods and operations implemented by the network device can also be implemented by components (such as chips or circuits) that can be used for the network device.

[0378] The embodiments of the present application can divide the functional modules of the terminal device or the network device according to the above method examples. For example, each functional module can be divided according to each function, or two or more functions can be integrated into one processing module. The integrated module can be implemented in the form of hardware or in the form of a software functional module. It should be noted that the division of the modules in the embodiments of the present application is illustrative, and is only a logical functional division. In actual implementation, another division manner can be used. The following will be described by taking the division of each functional module according to each function as an example.

[0379] The above, in combination with Figure 2 The method provided by the embodiments of the present application is described in detail. The following, in combination with Figures 9 to 10 The communication device provided by the embodiments of the present application is described in detail. It should be understood that the description of the device embodiments corresponds to the description of the method embodiments, and therefore, the content not described in detail can be referred to the method embodiments described above. In order to be brief, the description is not repeated here.

[0380] Please refer to Figure 10 , Figure 10 is a structural schematic diagram of a communication device provided by the embodiments of the present application. The communication device can 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, and the processing module 1002 is used for processing, such as generating a first signal.

[0381] In a possible design, the communication device can implement the steps or processes 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 transceiving 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.

[0382] In one embodiment:

[0383] The processing module 1002 is configured to generate a first signal according to a first sequence, the first sequence being a product of a second sequence and a third sequence.

[0384] 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.

[0385] An i th element in the second sequence corresponds to an i th subcarrier in the N subcarriers in the first frequency domain resource, an i th element in the third sequence corresponds to the i th subcarrier in the first frequency domain resource, an 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;

[0386] The first frequency domain resource includes M non-overlapping sub-frequency domain resources, the third sequence includes M sub-sequences, an t th sub-sequence in the M sub-sequences corresponds to an t th sub-frequency domain resource in the M sub-frequency domain resources, an t th sub-sequence in the M sub-sequences satisfies an t th relation in M relations, 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;

[0387] The sending module 1003 is configured to send the first signal.

[0388] Optionally, an i th element in the third sequence is equal to an N-i+1 th element in the third sequence.

[0389] Optionally, elements in at least one sub-sequence in the M sub-sequences are all the same.

[0390] Optionally, M is equal to 3, a starting frequency of an t1 th sub-frequency domain resource in the M sub-frequency domain resources is less than a starting frequency of an t2 th sub-frequency domain resource in 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.

[0391] An 1 st sub-sequence in the M sub-sequences satisfies a 1 st relation in the M relations, and the 1 st relation is that values of elements in the 1 st sub-sequence are all first values.

[0392] A 2 nd sub-sequence in the M sub-sequences satisfies a 2 nd relation in the M relations, and the 2 nd relation is:

[0393] Values of elements in the 2 nd sub-sequence are all second values, or the values of the elements in the 2 nd sub-sequence satisfy a polynomial function of a square of (k-(N-1) / 2), or the values of the elements in the 2 nd sub-sequence satisfy a function relation, wherein, k is a serial number of an element in the 2 nd sub-sequence in the third sequence, μ is less than 0, v is greater than 0, and s is greater than 0.

[0394] A third subsequence in the M sub-sequences satisfies a third relationship in the M relationships, the third relationship being that values of elements in the third subsequence are all third values;

[0395] The first value and the third value are both greater than the second value.

[0396] Optionally, the M is equal to 5, a starting frequency of a t1th sub-frequency domain resource in the M sub-frequency domain resources is less than a starting frequency of a t2th 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.

[0397] A first subsequence in the M sub-sequences satisfies a first relationship in the M relationships, the first relationship being that values of elements in the first subsequence are all first values;

[0398] A second subsequence in the M sub-sequences satisfies a second relationship in the M relationships, the second relationship being that values of elements in the second subsequence are all 1;

[0399] A third subsequence in the M sub-sequences satisfies a third relationship in the M relationships, the third relationship being that:

[0400] values of elements in the third subsequence are all second values, or values of elements in the third subsequence satisfy a polynomial function of a square of (k-(N-1) / 2), or values of elements in the third subsequence satisfy a function relationship, wherein, The k is a serial number of an element in the third subsequence in the third sequence, the μ is less than 0, the v is greater than 0, and the s is greater than 0;

[0401] A fourth subsequence in the M sub-sequences satisfies a fourth relationship in the M relationships, the fourth relationship being that values of elements in the fourth subsequence are all 1;

[0402] A fifth subsequence in the M sub-sequences satisfies a fifth relationship in the M relationships, the fifth relationship being that values of elements in the fifth subsequence are all third values;

[0403] 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.

[0404] Optionally, 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, 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.

[0405] Optionally, the first subsequence in the M subsequence satisfies the first relationship in the M relationships, the first relationship is that the k1th element in the first subsequence is greater than or equal to the k2th element in the first subsequence. The second subsequence in the M subsequence satisfies the second relationship in the M relationships, the second relationship is that 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 in the M subsequence satisfies the third relationship in the M relationships, the third relationship is that the k1th element in the third subsequence is less than or equal to the k2th element in 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. The first subsequence is a monotonically decreasing sequence, the second subsequence is an upper convex form sequence, and the third subsequence is a monotonically increasing sequence.

[0406] Optionally, the sending module is further configured to send first information to the second network device and / or the terminal device, the first information indicating 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, the μ, the v, the s, and the M.

[0407] 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.

[0408] Optionally, the receiving module 1001 is configured to receive a back echo signal of the first signal.

[0409] In another embodiment,

[0410] The receiving module 1001 is configured to receive a back echo signal of the first signal, the first signal being generated according to a first sequence, the first sequence being a product of a second sequence and a third sequence.

[0411] The first sequence includes N first elements, the second sequence includes N second elements, the second sequence carrying data, and the third sequence includes N third elements greater than or equal to 0,

[0412] an i-th element in the second sequence corresponds to an i-th subcarrier in the N subcarriers in the first frequency domain resource, an i-th element in the third sequence corresponds to the i-th subcarrier in the first frequency domain resource, an i-th element in the first sequence is carried on the i-th subcarrier in the first frequency domain resource, the N is an integer greater than 1, the i is an integer greater than or equal to 1 and less than or equal to N;

[0413] the first frequency domain resource comprises M non-overlapping sub-frequency domain resources, the third sequence comprises M sub-sequences, an t-th sub-sequence in the M sub-sequences corresponds to an t-th sub-frequency domain resource in the M sub-frequency domain resources, an t-th sub-sequence in the M sub-sequences satisfies an t-th relation in M relations, the M is an integer greater than or equal to 2 and less than or equal to N, the t is an integer greater than or equal to 1 and less than or equal to M.

[0414] Optionally, an i-th element in the third sequence is equal to an N-i+1-th element in the third sequence.

[0415] Optionally, values of elements in at least one sub-sequence in the M sub-sequences are all same.

[0416] Optionally, the M is equal to 3, a starting frequency of an t1-th sub-frequency domain resource in the M sub-frequency domain resources is less than a starting frequency of an 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, the t1 is less than the t2.

[0417] an 1-th sub-sequence in the M sub-sequences satisfies an 1-th relation in the M relations, the 1-th relation is that values of elements in the 1-th sub-sequence are all first values.

[0418] an 2-th sub-sequence in the M sub-sequences satisfies an 2-th relation in the M relations, the 2-th relation is that:

[0419] values of elements in the 2-th sub-sequence are all second values, or, values of elements in the 2-th sub-sequence satisfy a polynomial function of square of (k-(N-1) / 2), or, values of elements in the 2-th sub-sequence satisfy a function relation, wherein, the k is a serial number of an element in the 2-th sub-sequence in the third sequence, the μ is less than 0, the v is greater than 0, and the s is greater than 0.

[0420] an 3-th sub-sequence in the M sub-sequences satisfies an 3-th relation in the M relations, the 3-th relation is that values of elements in the 3-th sub-sequence are all third values.

[0421] wherein the first value and the third value are both greater than the second value.

[0422] Optionally, the M is equal to 5, a starting frequency of a t1th sub-frequency domain resource in the M sub-frequency domain resources is less than a starting frequency of a t2th 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, the t1 is less than the t2.

[0423] A first sub-sequence in the M sub-sequences satisfies a first relationship in the M relationships, the first relationship is that values of elements in the first sub-sequence are all first values.

[0424] A second sub-sequence in the M sub-sequences satisfies a second relationship in the M relationships, the second relationship is that values of elements in the second sub-sequence are all 1.

[0425] A third sub-sequence in the M sub-sequences satisfies a third relationship in the M relationships, the third relationship is that:

[0426] values of elements in the third sub-sequence are all second values, or, values of elements in the third sub-sequence satisfy a square of a polynomial function of (k-(N-1) / 2), or, values of elements in the third sub-sequence satisfy a function relationship, wherein, the k is a sequence number of an element in the third sub-sequence in the third sequence, the μ is less than 0, the v is greater than 0, and the s is greater than 0.

[0427] A fourth sub-sequence in the M sub-sequences satisfies a fourth relationship in the M relationships, the fourth relationship is that values of elements in the fourth sub-sequence are all 1.

[0428] A fifth sub-sequence in the M sub-sequences satisfies a fifth relationship in the M relationships, the fifth relationship is that values of elements in the fifth sub-sequence are all third values.

[0429] wherein 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.

[0430] Optionally, a kth element in the third sequence is less than or equal to a maximum value of a k1th element in the third sequence and a 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 the k2.

[0431] Optionally, a first sub-sequence of the M sub-sequences satisfies a first relationship of the M relationships, the first relationship is that a k1th element in the first sub-sequence is greater than or equal to a k2th element in the first sub-sequence. A second sub-sequence of the M sub-sequences satisfies a second relationship of the M relationships, the second relationship is that a kth element in the second sub-sequence is greater than or equal to a minimum value of a k1th element in the second sub-sequence and a k2th element in the second sub-sequence. A third sub-sequence of the M sub-sequences satisfies a third relationship of the M relationships, the third relationship is that a k1th element in the third sub-sequence is less than or equal to a k2th element in the third sub-sequence. The k, the k1 and the k2 are 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 the k2. The first sub-sequence is a monotonically decreasing sequence, the second sub-sequence is an upper convex sequence, and the third sub-sequence is a monotonically increasing sequence.

[0432] Optionally, the receiving module 1001 is further configured 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 first value, the second value, the third value, the μ, the v, the s, and the M.

[0433] 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.

[0434] It should be noted that the implementation of each module can also correspond to the description of the corresponding method embodiment shown in Figure 2 The method and function performed by the first network device or the second network device in the above embodiments.

[0435] Please refer to Figure 11 , Figure 11 is another structural schematic diagram of a communication device provided by the embodiment of the present application. The communication device can include a receiving module 1101 and a processing module 1102. The receiving module 1101 can communicate with the outside, and the processing module 1102 is used for processing, such as executing the method of demodulating the first signal.

[0436] In a possible design, the communication apparatus can implement the steps performed by the first terminal device or the second terminal device in the above method embodiments, for example, 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 configured to perform the transceiving related operations of the first terminal device or the second terminal device in the above method embodiments, and the processing module 1102 is configured to perform the processing related operations of the first terminal device or the second terminal device in the above method embodiments.

[0437] In one embodiment,

[0438] The receiving module 1101 is configured to receive a first signal, where the first signal is generated according to a first sequence, the first sequence is a product of a second sequence and a third sequence, the second sequence carries data, and the third sequence includes N third elements greater than or equal to 0.

[0439] 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.

[0440] An i th element in the second sequence corresponds to an i th subcarrier of N subcarriers in a first frequency domain resource, an i th element in the third sequence corresponds to the i th subcarrier in the first frequency domain resource, an 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.

[0441] The first frequency domain resource includes M non-overlapping sub-frequency domain resources, the third sequence includes M sub-sequences, an t th sub-sequence of the M sub-sequences corresponds to an t th sub-frequency domain resource of the M sub-frequency domain resources, the t th sub-sequence of the M sub-sequences satisfies an t th relation of M relations, 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.

[0442] Optionally, an i th element in the third sequence is equal to an N-i+1 th element in the third sequence.

[0443] Optionally, elements of at least one sub-sequence of the M sub-sequences are all the same.

[0444] Optionally, M is equal to 3, a starting frequency of an t1 th sub-frequency domain resource of the M sub-frequency domain resources is less than a starting frequency of an t2 th sub-frequency domain resource of 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.

[0445] A first subsequence in the M subsequences satisfies a first relationship in the M relationships, the first relationship being that values of elements in the first subsequence are all a first value;

[0446] A second subsequence in the M subsequences satisfies a second relationship in the M relationships, the second relationship being that values of elements in the second subsequence are all a second value, or, the values of the elements in the second subsequence satisfy a polynomial function of a square of (k-(N-1) / 2), or, the values of the elements in the second subsequence satisfy a function relationship, wherein, k is a sequence number of an 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;

[0447] The values of the elements in the third subsequence are all a second value, or, the values of the elements in the third subsequence satisfy a polynomial function of a square of (k-(N-1) / 2), or, the values of the elements in the third subsequence satisfy a function relationship, wherein, k is a sequence number of an element in the third subsequence in the fourth sequence, μ is less than 0, v is greater than 0, and s is greater than 0; The k is a sequence number of an element in the second subsequence in the third sequence, the μ is less than 0, the v is greater than 0, and the s is greater than 0;

[0448] A third subsequence in the M subsequences satisfies a third relationship in the M relationships, the third relationship being that values of elements in the third subsequence are all a third value;

[0449] The first value and the third value are both greater than the second value.

[0450] Optionally, the M is equal to 5, a starting frequency of a t1th sub-frequency domain resource in the M sub-frequency domain resources is less than a starting frequency of a t2th 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;

[0451] A first subsequence in the M subsequences satisfies a first relationship in the M relationships, the first relationship being that values of elements in the first subsequence are all a first value;

[0452] A second subsequence in the M subsequences satisfies a second relationship in the M relationships, the second relationship being that values of elements in the second subsequence are all 1;

[0453] A third subsequence in the M subsequences satisfies a third relationship in the M relationships, the third relationship being that values of elements in the third subsequence are all a second value, or, the values of the elements in the third subsequence satisfy a polynomial function of a square of (k-(N-1) / 2), or, the values of the elements in the third subsequence satisfy a function relationship, wherein, k is a sequence number of an element in the third subsequence in the fourth sequence, μ is less than 0, v is greater than 0, and s is greater than 0;

[0454] The values of the elements in the third subsequence are all a second value, or, the values of the elements in the third subsequence satisfy a polynomial function of a square of (k-(N-1) / 2), or, the values of the elements in the third subsequence satisfy a function relationship, wherein, k is a sequence number of an element in the third subsequence in the fourth sequence, μ is less than 0, v is greater than 0, and s is greater than 0; ​​The k is the sequence number of an element in the third sequence in the fourth subsequence, the μ is less than 0, the v is greater than 0, and the s is greater than 0;

[0455] The fourth subsequence in the M subsequence satisfies the fourth relationship in the M relationship, and the fourth relationship is that the value of the element in the fourth subsequence is 1.

[0456] The fifth subsequence in the M subsequence satisfies the fifth relationship in the M relationship, and the fifth relationship is that the value of the element in the fifth subsequence is a third value.

[0457] 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.

[0458] 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.

[0459] Optionally, the first subsequence in the M subsequence satisfies the first relationship in the M relationship, and the first relationship is that the k1th element in the first subsequence is greater than or equal to the k2th element in the first subsequence. The second subsequence in the M subsequence satisfies the second relationship in the M relationship, and the second relationship is that 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 in the M subsequence satisfies the third relationship in the M relationship, and the third relationship is that the k1th element in the third subsequence is less than or equal to the k2th element in 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. The first subsequence is a monotonically decreasing sequence, the second subsequence is an upper convex form sequence, and the third subsequence is a monotonically increasing sequence.

[0460] Optionally, the receiving module 1101 is further configured to receive first information sent by the first network device, and 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.

[0461] The processing module 1102 is configured to acquire the second sequence from the first signal based on the first information.

[0462] In another embodiment,

[0463] The receiving module 1101 is configured to receive a first signal echo signal, wherein the first signal is generated according to a first sequence, and the first sequence is a product of a second sequence and a third sequence.

[0464] 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.

[0465] The i th element in the second sequence corresponds to the i th subcarrier of N subcarriers in a 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, i is an integer greater than or equal to 1 and less than or equal to N.

[0466] The first frequency domain resource includes M non-overlapping sub-frequency domain resources, the third sequence includes M sub-sequences, the t th sub-sequence of the M sub-sequences corresponds to the t th sub-frequency domain resource of the M sub-frequency domain resources, the t th sub-sequence of the M sub-sequences satisfies the t th relationship of M relationships, M is an integer greater than or equal to 2 and less than or equal to N, t is an integer greater than or equal to 1 and less than or equal to M.

[0467] Optionally, the i th element in the third sequence is equal to the N-i+1 th element in the third sequence.

[0468] Optionally, the elements of at least one sub-sequence of the M sub-sequences are all the same.

[0469] Optionally, M is equal to 3, the starting frequency of the t1 th sub-frequency domain resource of the M sub-frequency domain resources is less than the starting frequency of the t2 th sub-frequency domain resource of 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, t1 is less than t2.

[0470] The first sub-sequence of the M sub-sequences satisfies the first relationship of the M relationships, and the first relationship is that the elements in the first sub-sequence are all first values.

[0471] The second sub-sequence of the M sub-sequences satisfies the second relationship of the M relationships, and the second relationship is:

[0472] the values of the elements in the second sub-sequence are all the second value, or the values of the elements in the second sub-sequence satisfy a polynomial function of (k-(N-1) / 2) square, or the values of the elements in the second sub-sequence satisfy a function relationship, wherein, the k is the sequence number of the element in the third sequence, the μ is less than 0, the v is greater than 0, and the s is greater than 0;

[0473] The third sub-sequence in the M sub-sequences satisfies a third relationship in the M relationships, and the third relationship is that the values of the elements in the third sub-sequence are all the third value.

[0474] The first value and the third value are both greater than the second value.

[0475] Optionally, the M is equal to 5, the starting frequency of the t1th sub-frequency domain resource in the M sub-frequency domain resources is less than the starting frequency of the t2th 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.

[0476] The first sub-sequence in the M sub-sequences satisfies a first relationship in the M relationships, and the first relationship is that the values of the elements in the first sub-sequence are all the first value.

[0477] The second sub-sequence in the M sub-sequences satisfies a second relationship in the M relationships, and the second relationship is that the values of the elements in the second sub-sequence are all 1.

[0478] The third sub-sequence in the M sub-sequences satisfies a third relationship in the M relationships, and the third relationship is that:

[0479] The values of the elements in the third sub-sequence are all the second value, or the values of the elements in the third sub-sequence satisfy a polynomial function of (k-(N-1) / 2) square, or the values of the elements in the third sub-sequence satisfy a function relationship, wherein, The k is the sequence number of the element in the third sequence, the μ is less than 0, the v is greater than 0, and the s is greater than 0;

[0480] The fourth sub-sequence in the M sub-sequences satisfies a fourth relationship in the M relationships, and the fourth relationship is that the values of the elements in the fourth sub-sequence are all 1.

[0481] The fifth subsequence in the M subsequence satisfies a fifth relationship in the M relationships, and the fifth relationship is that values of elements in the fifth subsequence are all third values.

[0482] The first value and the third value are both greater than 1, the second value is greater than 0 and less than or equal to 1.

[0483] Optionally, a kth element in the third sequence is less than or equal to a maximum value of a k1th element in the third sequence and a 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.

[0484] Optionally, a first subsequence in the M subsequence satisfies a first relationship in the M relationships, and the first relationship is that a k1th element in the first subsequence is greater than or equal to a k2th element in the first subsequence. A second subsequence in the M subsequence satisfies a second relationship in the M relationships, and the second relationship is that a kth element in the second subsequence is greater than or equal to a minimum value of a k1th element in the second subsequence and a k2th element in the second subsequence. A third subsequence in the M subsequence satisfies a third relationship in the M relationships, and the third relationship is that a k1th element in the third subsequence is less than or equal to a k2th element in 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. The first subsequence is a monotonically decreasing sequence, the second subsequence is an upper convex form sequence, and the third subsequence is a monotonically increasing sequence.

[0485] Optionally, the receiving module 1101 is further configured 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 first value, the second value, the third value, the μ, the v, the s and the M.

[0486] 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.

[0487] It should be noted that the implementation of each module can also correspond to the description of the corresponding method embodiment shown in Figure 2 The method and function performed by the first terminal device or the second terminal device in the above embodiments.

[0488] Figure 12 This is a schematic diagram of the structure of a network device provided in an embodiment of this application. The network device can be applied to 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.

[0489] like Figure 12 As shown, 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 connections to transmit control and / or data signals. The memory 1203 stores computer programs, and the processor 1201 retrieves and runs 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.

[0490] The processor 1201 and memory 1203 can be combined into a single processing device. The processor 1201 executes the program code stored in the memory 1203 to achieve the aforementioned functions. In specific implementations, the memory 1203 can be integrated into the processor 1201 or independent of it. The processor 1201 can be combined with... Figure 10 The corresponding processing module in [the system / processing module].

[0491] The transceiver 1202 described above can be used with Figure 10 The receiving module and transmitting module in the transceiver unit correspond to each other and can also be called a transceiver unit or transceiver module. The transceiver 1202 may include a receiver (or receiver circuit) and a transmitter (or transmitter circuit). The receiver is used to receive signals, and the transmitter is used to transmit signals.

[0492] It should be understood that Figure 12 The network device shown can achieve Figure 2 The methods illustrated in the embodiments involve various processes of the network device. The operations and / or functions of each module in the network device are respectively for implementing the corresponding processes in the above method embodiments. For details, please refer to the descriptions in the above method embodiments; to avoid repetition, detailed descriptions are appropriately omitted here.

[0493] The processor 1201 described above can be used to execute the actions implemented internally by the network device as described in the preceding method embodiments, while the transceiver 1202 can be used to execute the actions described in the preceding method embodiments of sending to or receiving data from the network device. Please refer to the descriptions in the preceding method embodiments for details, which will not be repeated here.

[0494] The processor 1201 can be a central processing unit, a general purpose processor, a digital signal processor, an application specific integrated circuit, a field programmable gate array, or other programmable logic device, transistor logic, hardware components, or any combination thereof. It can implement or execute various example logical blocks, modules, and circuits described in connection with the disclosure. The processor 1201 can also be a combination of computing components, such as one or more microprocessors, a combination of a digital signal processor and a microprocessor, and so on. The communication bus 1204 can be a peripheral component interconnect (PCI) bus or an extended industry standard architecture (EISA) bus, and the like. The bus can be divided into an address bus, a data bus, a control bus, and the like. For ease of representation, Figure 12 The communication bus 1204 is used to realize the connection communication between the components. In the embodiment of the present application, the transceiver 1202 is used to communicate signaling or data with other node devices. The memory 1203 can include volatile memory, such as non-volatile random access memory (NVRAM), phase change RAM (PRAM), magnetoresistive RAM (MRAM), and the like, and can also include non-volatile memory, such as at least one magnetic disk storage device, electrically erasable programmable read-only memory (EEPROM), a flash memory device, such as a NOR flash memory or a NAND flash memory, a semiconductor device, such as a solid state disk (SSD), and the like. The memory 1203 can also be at least one storage device located away from the processor 1201. The memory 1203 can also store a set of computer program codes or configuration information. Optionally, the processor 1201 can also execute the program stored in the memory 1203. The processor can cooperate with the memory and the transceiver to perform any method and function of the network device in the above embodiments.

[0495] Figure 13 FIG. 1 is a structural schematic diagram of a terminal device provided by an embodiment of the present application. The terminal device can be applied to the system shown in FIG. 1(a), FIG. 1(b), and FIG. 1(c), and can perform the functions of the terminal device in the above method embodiments, or implement the steps or processes performed by the terminal device in the above method embodiments.

[0496] As Figure 13As shown, the terminal device includes a processor 1301 and a transceiver 1302. Optionally, the terminal device further includes a memory 1303. Among them, the processor 1301, the transceiver 1302 and the memory 1303 can communicate with each other through the internal connection channel, transfer control and / or data signals, the memory 1303 is used to store computer programs, the processor 1301 is used to call and run the computer programs from the memory 1303 to control the transceiver 1302 to transceive signals. Optionally, the terminal device can also include an antenna for transmitting the uplink data or uplink control signaling output by the transceiver 1302 through wireless signals.

[0497] The processor 1301 and the memory 1303 can be combined into one processing device, and the processor 1301 is used to execute the program code stored in the memory 1303 to realize the above functions. In specific implementation, the memory 1303 can also be integrated in the processor 1301, or independent of the processor 1301. The processor 1301 can correspond to the processing module in Figure 11 .

[0498] The transceiver 1302 can correspond to the receiving module in Figure 11 , and can also be called a transceiving unit or a transceiving module. The transceiver 1302 can include a receiver (or receiver, receiving circuit) and a transmitter (or transmitter, transmitting circuit). Among them, the receiver is used to receive signals, and the transmitter is used to transmit signals.

[0499] It should be understood that Figure 13 The terminal device shown can realize the method embodiments shown in Figure 2 The terminal device is involved in each process of the method embodiments. The operation and / or function of each module in the terminal device is respectively used to realize the corresponding flow in the above method embodiments. For details, see the description in the above method embodiments, and appropriate detailed description is omitted here.

[0500] The processor 1301 can be used to execute the actions described in the foregoing method embodiments and realized internally by the terminal device, and the transceiver 1302 can be used to execute the actions described in the foregoing method embodiments and sent or received by the terminal device. For details, see the description in the foregoing method embodiments, which will not be repeated here.

[0501] Among them, the processor 1301 can be various types of processors mentioned in the foregoing. The communication bus 1304 can be a peripheral component interconnect (PCI) bus or an extended industry standard architecture (EISA) bus, etc. The bus can be divided into address bus, data bus, control bus, etc. For the sake of indication, Figure 13The bus 1304 is used to implement the connection communication between these components. Among them, the transceiver 1302 of the device in the embodiment of the application is used for signaling or data communication with other devices. The memory 1303 can be various types of memories mentioned above. The memory 1303 can also be at least one storage device located away from the aforementioned processor 1301. The memory 1303 stores a set of computer program codes or configuration information, and the processor 1301 executes the program in the memory 1303. The processor can cooperate with the memory and the transceiver to execute any method and function of the terminal device in the above-mentioned embodiments.

[0502] The embodiment of the 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-mentioned embodiments, such as generating or processing the first signal involved in the above-mentioned method. In a possible design, the chip system can also include a memory, and the memory is used for the necessary program instructions and data of the terminal device or the access network device. The chip system can be composed of a chip, or 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 the access network device in the method embodiment, respectively.

[0503] The embodiment of the application also provides a processing device including a processor and an interface. The processor can be used to execute the method in the above-mentioned method embodiment.

[0504] It should be understood that the above-mentioned processing device can be a chip. For example, the processing device can be a field programmable gate array (FPGA), can be an application specific integrated circuit (ASIC), can be a system on chip (SoC), can be a central processor unit (CPU), can be a network processor (NP), can be a digital signal processor (DSP), can be a micro controller unit (MCU), can be a programmable logic device (PLD) or other integrated chip.

[0505] In the implementation process, the steps of the above method can be completed by integrated logic circuits of hardware in the processor or instructions in the form of software. The steps of the method disclosed in combination with the embodiments of the present application can be directly embodied as hardware processor execution completion, or execution completion by hardware and software module combination in the processor. The software module can be located in a mature storage medium in the art such as random access memory, flash memory, read-only memory, programmable read-only memory, electrically erasable programmable memory, register, etc. The storage medium is located in the memory, and the processor reads the information in the memory, and combines the hardware to complete the steps of the above method. To avoid repetition, it will not be described in detail here.

[0506] It should be noted that the processor in the embodiments of the present application can be an integrated circuit chip with signal processing capability. In the implementation process, the steps of the above method embodiments can be completed by integrated logic circuits of hardware in the processor or instructions in the form of software. The processor mentioned above can be a general processor, a digital signal processor (DSP), an application specific integrated circuit (ASIC), a field programmable gate array (FPGA) or other programmable logic devices, discrete gates or transistor logic devices, discrete hardware components. The disclosed methods, steps and logic block diagrams in the embodiments of the present application can be implemented or executed. The general processor can be a microprocessor or the processor can be any conventional processor. The steps of the method disclosed in combination with the embodiments of the present application can be directly embodied as hardware decoding processor execution completion, or execution completion by hardware and software module combination in the decoding processor. The software module can be located in a mature storage medium in the art such as random access memory, flash memory, read-only memory, programmable read-only memory, electrically erasable programmable memory, register, etc. The storage medium is located in the memory, and the processor reads the information in the memory, and combines the hardware to complete the steps of the above method.

[0507] According to the method provided by the embodiments of the present application, the present application also provides a computer program product, which comprises a computer program, when the computer program runs on a computer, so that the computer executes Figure 2 The method of any one of the embodiments shown.

[0508] According to the method provided by 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, so that the computer executes Figure 2 The method of any one of the embodiments shown.

[0509] According to the method provided by the embodiments of the present application, the present application also provides a communication system, which comprises one or more terminal devices and one or more access network devices.

[0510] In the above embodiments, all or part of the embodiments can be implemented by software, hardware, firmware or any combination thereof. When implemented by software, all or part of the embodiments can 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 can be a general purpose computer, a special purpose computer, a computer network, or other programmable devices. The computer instructions can 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 can be transmitted from one website, computer, server or data center to another website, computer, server or data center through wired (such as coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (such as infrared, wireless, microwave, etc.) mode. The computer readable storage medium can be any available medium that can be accessed by a computer or a data storage device such as a server, data center, etc. integrated with one or more available media sets. The available media can be magnetic media (such as floppy disk, hard disk, magnetic tape), optical media (such as high-density digital video disc (digital video disc, DVD)), or semiconductor media (such as solid state disc (solid state disc, SSD)) and the like.

[0511] The access network device in each of the above device embodiments corresponds to the access network device or terminal device in the method embodiments, and the corresponding steps are performed by the corresponding modules or units, for example, the receiving module and the sending module (transceiver) perform the steps of receiving or sending in the method embodiments. Other steps except sending and receiving can be performed by the processing module (processor). The functions of specific modules can refer to the corresponding method embodiments. The processor can be one or more.

[0512] As used in this description, the terms "component," "module," "system," and the like are intended to refer to a computer-related entity, either hardware, firmware, a combination of hardware and software, software, or software in execution. For example, a component can be, but is not limited to being, a process running on a processor, a processor, an object, an executable, a thread of execution, a program, and / or a computer. By way of illustration, both an application running on a computing device and the computing device can be a component. One or more components can reside within a process and / or thread of execution and a component can be localized, partially localized, and / or distributed across two or more computers. Also, these components can execute from various computer readable media having various data structures stored thereon. The components can communicate by way of local and / or remote processes such as in accordance with a signal having one or more data packets (e.g., data from one component interacting with another component in a local system, distributed system, and / or across a network such as the Internet with other systems via the signal).

[0513] Those of skill in the art would understand that the various illustrative logical blocks and steps described in connection with the embodiments disclosed herein can be implemented by electronic hardware, or a combination of computer software and electronic hardware. The choice of whether to implement the described functionality in hardware or software depends on the particular application and design constraints imposed on the overall system. Skilled artisans can implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.

[0514] Those of skill in the art would understand that, for the described convenience and brevity, the specific working process of the system, device and unit described above can refer to the corresponding process in the foregoing method embodiment, which will not be described here.

[0515] In several embodiments provided in the present application, it should be understood that the disclosed system, device and method can be implemented in other ways. For example, the device embodiments described above are merely illustrative, for example, the division of the units is only a logical function division, and actual implementation can have another division manner, for example, a plurality of units or components can be combined or integrated into another system, or some features can be ignored or not executed. In addition, the coupling or direct coupling or communication connection between the displayed or discussed each other can be through some interface, device or unit indirect coupling or communication connection, which can be electrical, mechanical or other forms.

[0516] The units described as separate components may or may not be physically separate, and the components displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed on multiple network units. Part or all of the units can be selected according to actual needs to achieve the purpose of the embodiment scheme.

[0517] In addition, the functional modules in each embodiment of the present application can be integrated in one processing module, or each module can be physically present alone, or two or more modules can be integrated in one module.

[0518] If the functions are realized in the form of software function units and sold or used as independent products, they can be stored in a computer readable storage medium. Based on this understanding, the technical solutions of the present application or the part of the present application that essentially contributes to the prior art or the part of the technical solutions can be embodied in the form of a software product. The computer software product is stored in a storage medium and includes a plurality of instructions for causing 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: a U disk, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk, and various program code storage media.

[0519] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art can easily think of changes or replacements within the technical scope disclosed in the present application, which should be covered within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A communication method characterized by comprising: The method comprises: The first network device generates a first signal according to a first sequence, the first sequence being a product of a second sequence and a third sequence; The first sequence comprises N first elements, the second sequence comprises N second elements, the second sequence carrying data, and the third sequence comprises N third elements greater than or equal to 0; An i th element in the second sequence corresponds to an i th subcarrier of N subcarriers in a first frequency domain resource, an i th element in the third sequence corresponds to the i th subcarrier in the first frequency domain resource, and an i th element in the first sequence is carried on the i th subcarrier in the first frequency domain resource, the N being an integer greater than 1, and the i being an integer greater than or equal to 1 and less than or equal to N; The first frequency domain resource comprises M non-overlapping sub-frequency domain resources, the third sequence comprises M sub-sequences, an t th sub-sequence of the M sub-sequences corresponds to an t th sub-frequency domain resource of the M sub-frequency domain resources, and the t th sub-sequence of the M sub-sequences satisfies an t th relation of M relations, the M being an integer greater than or equal to 2 and less than or equal to N, and the t being an integer greater than or equal to 1 and less than or equal to M; The first network device transmits the first signal.

2. The method of claim 1, wherein, The i th element in the third sequence is equal to an N-i+1 th element in the third sequence.

3. The method of claim 1 or 2, wherein, The elements of at least one sub-sequence of the M sub-sequences 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, a starting frequency of an t1 th sub-frequency domain resource of the M sub-frequency domain resources is less than a starting frequency of an t2 th sub-frequency domain resource of the M sub-frequency domain resources, the t1 being an integer greater than or equal to 1 and less than M, the t2 being an integer greater than 1 and less than or equal to M, and the t1 being less than the t2; A first sub-sequence of the M sub-sequences satisfies a first relation of the M relations, the first relation being that the elements in the first sub-sequence are all a first value; A second sub-sequence of the M sub-sequences satisfies a second relation of the M relations, the second relation being that the elements in the second sub-sequence are all a second value; all the values of the elements in the second sub-sequence are the second value, or the values of the elements in the second sub-sequence satisfy a polynomial function of (k-(N-1) / 2)2, or the values of the elements in the second sub-sequence satisfy a function relationship, wherein, the k is the serial number of the element in the second sub-sequence in the third sequence, the μ is less than 0, the v is greater than 0, and the s is greater than 0. A third sub-sequence of the M sub-sequences satisfies a third relation of the M relations, the third relation being that the elements in the third sub-sequence are all a third value; 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, wherein The M is equal to 5, a starting frequency of an t1 th sub-frequency domain resource of the M sub-frequency domain resources is less than a starting frequency of an t2 th sub-frequency domain resource of the M sub-frequency domain resources, the t1 being an integer greater than or equal to 1 and less than M, the t2 being an integer greater than 1 and less than or equal to M, and the t1 being less than the t2; A first sub-sequence of the M sub-sequences satisfies a first relation of the M relations, the first relation being that the elements in the first sub-sequence are all a first value; A second sub-sequence of the M sub-sequences satisfies a second relation of the M relations, the second relation being that the elements in the second sub-sequence are all 1; A third sub-sequence in the M sub-sequences satisfies a third relationship in the M relationships, the third relationship being: all the values of the elements in the third sub-sequence are the second value, or the values of the elements in the third sub-sequence satisfy a polynomial function of (k-(N-1) / 2)2, or the values of the elements in the third sub-sequence satisfy a function relationship, wherein, the k is the serial number of the element in the third sub-sequence in the third sequence, the μ is less than 0, the v is greater than 0, and the s is greater than 0. A fourth sub-sequence in the M sub-sequences satisfies a fourth relationship in the M relationships, the fourth relationship being: A fifth sub-sequence in the M sub-sequences satisfies a fifth relationship in the M relationships, the fifth relationship being: 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, wherein A first sub-sequence in the M sub-sequences satisfies a first relationship in the M relationships, the first relationship being: a k1th element in the first sub-sequence is greater than or equal to a k2th element in the first sub-sequence, a second sub-sequence in the M sub-sequences satisfies a second relationship in the M relationships, the second relationship being: a kth element in the second sub-sequence is greater than or equal to a minimum value of a k1th element in the second sub-sequence and a k2th element in the second sub-sequence, a third sub-sequence in the M sub-sequences satisfies a third relationship in the M relationships, the third relationship being: a k1th element in the third sub-sequence is less than or equal to a k2th element in the third sub-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.

7. The method of claim 4 or 5, wherein, The method further includes: The first network device sends first information to a second network device and / or a terminal device, the first information indicating parameter information of the third sequence, the parameter information including at least one of 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, wherein, 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, wherein, The method further includes: The first network device receives a back echo signal of the first signal.

10. A communication method characterized by comprising: The method includes: A second network device receives a back echo signal of a first signal, the first signal being generated according to a first sequence, the first sequence being 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 carrying data, and the third sequence includes N third elements greater than or equal to 0, An ith element in the second sequence corresponds to an ith sub-carrier in 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, and an ith element in the first sequence is carried on the ith sub-carrier in the first frequency domain resource, the N being an integer greater than 1, and the i being an integer greater than or equal to 1 and less than or equal to N. The first frequency domain resource comprises M non-overlapping sub-frequency domain resources, the third sequence comprises M sub-sequences, a tth sub-sequence in the M sub-sequences corresponds to a tth sub-frequency domain resource in the M sub-frequency domain resources, a tth sub-sequence in the M sub-sequences satisfies a tth relation in the M relations, 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 of claim 10, wherein, An i th element in the third sequence is equal to an N-i+1 th element in the third sequence.

12. The method of claim 10 or 11, wherein, The elements in at least one sub-sequence in the M sub-sequences are all the same.

13. The method according to any one of claims 10 to 12, wherein, M is equal to 3, a starting frequency of a t1 th sub-frequency domain resource in the M sub-frequency domain resources is less than a starting frequency of a t2 th sub-frequency domain resource in 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. A first sub-sequence in the M sub-sequences satisfies a first relation in the M relations, and the first relation is that the elements in the first sub-sequence are all first values. A second sub-sequence in the M sub-sequences satisfies a second relation in the M relations, and the second relation is that the elements in the second sub-sequence are all second values. all the values of the elements in the second sub-sequence are the second value, or the values of the elements in the second sub-sequence satisfy a polynomial function of (k-(N-1) / 2)2, or the values of the elements in the second sub-sequence satisfy a function relationship, wherein, the k is the serial number of the element in the second sub-sequence in the third sequence, the μ is less than 0, the v is greater than 0, and the s is greater than 0. A third sub-sequence in the M sub-sequences satisfies a third relation in the M relations, and the third relation is that the elements in the third sub-sequence are all third values. The first value and the third value are both greater than the second value.

14. The method of any one of claims 10-12, wherein, M is equal to 5, a starting frequency of a t1 th sub-frequency domain resource in the M sub-frequency domain resources is less than a starting frequency of a t2 th sub-frequency domain resource in 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. A first sub-sequence in the M sub-sequences satisfies a first relation in the M relations, and the first relation is that the elements in the first sub-sequence are all first values. A second sub-sequence in the M sub-sequences satisfies a second relation in the M relations, and the second relation is that the elements in the second sub-sequence are all 1. A third sub-sequence in the M sub-sequences satisfies a third relation in the M relations, and the third relation is that the elements in the third sub-sequence are all second values. all the values of the elements in the third sub-sequence are the second value, or the values of the elements in the third sub-sequence satisfy a polynomial function of (k-(N-1) / 2)2, or the values of the elements in the third sub-sequence satisfy a function relationship, wherein, the k is the serial number of the element in the third sub-sequence in the third sequence, the μ is less than 0, the v is greater than 0, and the s is greater than 0. A fourth sub-sequence in the M sub-sequences satisfies a fourth relation in the M relations, and the fourth relation is that the elements in the fourth sub-sequence are all 1. A fifth sub-sequence in the M sub-sequences satisfies a fifth relation in the M relations, and the fifth relation is that the elements in the fifth sub-sequence are all third values. 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 of any one of claims 10-12, wherein, A first subsequence in the M subsequences satisfies a first relationship in the M relationships, the first relationship being that a k1th element in the first subsequence is greater than or equal to a k2th element in the first subsequence, a second subsequence in the M subsequences satisfies a second relationship in the M relationships, the second relationship being that a kth element in the second subsequence is greater than or equal to a minimum of a k1th element in the second subsequence and a k2th element in the second subsequence, a third subsequence in the M subsequences satisfies a third relationship in the M relationships, the third relationship being that a k1th element in the third subsequence is less than or equal to a k2th element in the third subsequence, the k, the k1 and the k2 being integers greater than or equal to 1 and less than or equal to N, the k2 being greater than the k1, the k being greater than or equal to the k1 and less than or equal to k2.

16. The method of claim 13 or 14, wherein, The method further comprises: The second network device receives first information sent by the first network device, the first information being used for indicating 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, the mu, the v, the s and the M.

17. The method of any one of claims 10-16, wherein, 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 method of communication, comprising: The method comprises: The terminal device receives a first signal, the first signal being generated according to a first sequence, the first sequence being 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 carrying data, the third sequence including N third elements greater than or equal to 0, An ith element in the second sequence corresponds to an ith subcarrier in N subcarriers in a first frequency domain resource, an ith element in the third sequence corresponds to the ith subcarrier in the first frequency domain resource, an ith element in the first sequence is carried on the ith subcarrier in the first frequency domain resource, the N being an integer greater than 1, the i being an integer greater than or equal to 1 and less than or equal to N; The first frequency domain resource includes M non-overlapping sub-frequency domain resources, the third sequence includes M sub-sequences, an ith sub-sequence in the M sub-sequences corresponds to an ith sub-frequency domain resource in the M sub-frequency domain resources, the ith sub-sequence in the M sub-sequences satisfies an ith relationship in the M relationships, the M being an integer greater than or equal to 2 and less than or equal to N, the t being an integer greater than or equal to 1 and less than or equal to M.

19. The method of claim 18, wherein, An ith element in the third sequence is equal to an N-i+1th element in the third sequence.

20. The method of claim 18 or 19, wherein, The values of elements in at least one sub-sequence in the M sub-sequences are all the same.

21. The method of any one of claims 18-20, wherein, The M is equal to 3, a starting frequency of a t1th sub-frequency domain resource in the M sub-frequency domain resources is less than a starting frequency of a t2th 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; A first sub-sequence in the M sub-sequences satisfies a first relationship in the M relationships, the first relationship is that values of elements in the first sub-sequence are all first values; A second sub-sequence in the M sub-sequences satisfies a second relationship in the M relationships, the second relationship is that values of elements in the second sub-sequence are all second values; all the values of the elements in the second sub-sequence are the second value, or the values of the elements in the second sub-sequence satisfy a polynomial function of (k-(N-1) / 2)2, or the values of the elements in the second sub-sequence satisfy a function relationship, wherein, the k is the serial number of the element in the second sub-sequence in the third sequence, the μ is less than 0, the v is greater than 0, and the s is greater than 0. A third sub-sequence in the M sub-sequences satisfies a third relationship in the M relationships, the third relationship is that values of elements in the third sub-sequence are all third values; The first value and the third value are both greater than the second value.

22. The method of any one of claims 18-20, wherein, The M is equal to 5, a starting frequency of a t1th sub-frequency domain resource in the M sub-frequency domain resources is less than a starting frequency of a t2th 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; A first sub-sequence in the M sub-sequences satisfies a first relationship in the M relationships, the first relationship is that values of elements in the first sub-sequence are all first values; A second sub-sequence in the M sub-sequences satisfies a second relationship in the M relationships, the second relationship is that values of elements in the second sub-sequence are all 1; A third sub-sequence in the M sub-sequences satisfies a third relationship in the M relationships, the third relationship is that values of elements in the third sub-sequence are all 1; all the values of the elements in the third sub-sequence are the second value, or the values of the elements in the third sub-sequence satisfy a polynomial function of (k-(N-1) / 2)2, or the values of the elements in the third sub-sequence satisfy a function relationship, wherein, the k is the serial number of the element in the third sub-sequence in the third sequence, the μ is less than 0, the v is greater than 0, and the s is greater than 0. A fourth sub-sequence in the M sub-sequences satisfies a fourth relationship in the M relationships, the fourth relationship is that values of elements in the fourth sub-sequence are all 1; A fifth sub-sequence in the M sub-sequences satisfies a fifth relationship in the M relationships, the fifth relationship is that values of elements in the fifth sub-sequence are all third values; 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 of any one of claims 18-20, wherein, A first sub-sequence of the M sub-sequences satisfies a first relationship of the M relationships, the first relationship being that a k1th element in the first sub-sequence is greater than or equal to a k2th element in the first sub-sequence, a second sub-sequence of the M sub-sequences satisfies a second relationship of the M relationships, the second relationship being that a kth element in the second sub-sequence is greater than or equal to a minimum of a k1th element in the second sub-sequence and a k2th element in the second sub-sequence, a third sub-sequence of the M sub-sequences satisfies a third relationship of the M relationships, the third relationship being that a k1th element in the third sub-sequence is less than or equal to a k2th element in the third sub-sequence, the k, the k1 and the k2 being integers greater than or equal to 1 and less than or equal to N, the k2 being greater than the k1, the k being greater than or equal to the k1 and less than or equal to k2.

24. The method of claim 21 or 22, wherein, The method further comprises: The terminal device receives first information sent by the first network device, the first information being used for indicating 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, the μ, the v, the s and the M.

25. A communications device, characterized by The communication apparatus includes a processor and a memory, the memory stores a computer program, when the computer program is run by the processor, the method as claimed in any one of claims 1-9 is implemented.

26. A communications device, characterized by The communication apparatus includes a processor and a memory, the memory stores a computer program, when the computer program is run by the processor, the method as claimed in any one of claims 10-17 is implemented.

27. A communications device, characterized by The communication apparatus includes a processor and a memory, the memory stores a computer program, when the computer program is run by the processor, the method as claimed in any one of claims 18-24 is implemented.

28. A computer-readable storage medium, characterized in that, The computer readable storage medium includes a computer program, when the computer program is run by the processor, the method as claimed in any one of claims 1-24 is implemented.

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