Data transmission method, wireless communication device, storage medium and program product

Abstract

The embodiment of the invention provides a data transmission method, wireless communication equipment, a storage medium and a program product. The method comprises the steps that a first data sequence and a second data sequence are acquired, and frequency domain bandwidths allocated to the first data sequence and the second data sequence are different; adding a first header sequence before the first data sequence, and adding a first tail sequence after the first data sequence to form a first target data sequence; adding a second header sequence before the second data sequence, and adding a second tail sequence after the second data sequence to form a second target data sequence; sending the first target data sequence and the second target data sequence; wherein the data lengths of the first tail sequence and the second tail sequence are different; the first header sequence and the second header sequence have the same data length. The wireless communication device, the storage medium and the program product apply the method, and by means of the method, the CP overhead can be saved to improve the spectrum efficiency.

Description

Technical Field

[0001] Embodiments of the present application relate to, but are not limited to, the field of communication technologies, and in particular, to a data transmission method, a wireless communication device, a storage medium, and a program product. Background Art

[0002] In the new radio (NR) of the fifth-generation mobile communication technology (5G), two technologies, namely cyclic prefix orthogonal frequency division multiplexing (CP-OFDM) and discrete Fourier transform spread orthogonal frequency division multiplexing (DFT-s-OFDM), are supported for data transmission. During data transmission, the same cyclic prefix CP is often used for users in the same cell to eliminate inter-symbol interference. However, CP occupies time-frequency resources and reduces spectral efficiency. Therefore, how to design a data transmission method to save CP overhead and improve spectral efficiency is an urgent problem to be solved. Summary of the Invention

[0003] The following is an overview of the subject matter described in detail in this document. This overview is not intended to limit the scope of protection of the claims.

[0004] Embodiments of the present application provide a data transmission method, a wireless communication device, a storage medium, and a program product, which can save CP overhead and improve spectral efficiency.

[0005] In a first aspect, a data transmission method according to an embodiment of the present application includes:

[0006] Obtain a first data sequence and a second data sequence, where the frequency domain bandwidths allocated to the first data sequence and the second data sequence are different;

[0007] Add a first header sequence before the first data sequence and add a first tail sequence after the first data sequence to form a first target data sequence;

[0008] Add a second header sequence before the second data sequence and add a second tail sequence after the second data sequence to form a second target data sequence;

[0009] Transmit the first target data sequence and the second target data sequence;

[0010] Among them, the data lengths of the first tail sequence and the second tail sequence are different; the data lengths of the first head sequence and the second head sequence are the same.

[0011] In a second aspect, an embodiment of the present application further provides a wireless communication device, including:

[0012] At least one processor;

[0013] At least one memory for storing at least one program;

[0014] When at least one of the at least one program is executed by at least one of the at least one processor, the method described in any item of the first aspect is implemented.

[0015] In a third aspect, an embodiment of the present application further provides a readable storage medium. The computer-readable storage medium stores computer-executable instructions, and the computer-executable instructions: are used to execute the method described in any item of the first aspect.

[0016] In a fourth aspect, an embodiment of the present application further provides a computer program product, including a computer program or computer instructions. It is characterized in that the computer program or the computer instructions are stored in a computer-readable storage medium, and a processor of a computer device reads the computer program or the computer instructions from the computer-readable storage medium, and the processor executes the computer program or the computer instructions, so that the computer device executes the method described in any item of the first aspect.

[0017] In the embodiment of the present application, by respectively inserting a first head sequence and a second head sequence with the same length before the first data sequence and the second data sequence to be transmitted, the interference to the first tail sequence and the second tail sequence after oversampling can be reduced. At this time, the first tail sequence and the second tail sequence can select tail sequences with the required length according to the influence of multipath delay. For example, when the multipath delay becomes smaller, shorter first tail sequence and second tail sequence can be selected, so that the data amounts of the first data sequence and the second data sequence that can be transmitted are increased. Therefore, compared with the related art, the embodiment of the present application can save the CP overhead to improve the spectrum efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1a is an interaction schematic diagram of a scenario of an application of the data transmission method provided by the present application;

[0019] Figure 1b is an interaction schematic diagram of another scenario of an application of the data transmission method provided by the present application;

[0020] Figure 2 is a flowchart of the data transmission method provided by the present application;

[0021] Figure 3 It is a schematic diagram of the structure of the target data sequence in the data transmission method of the present application;

[0022] Figure 4 It is a schematic diagram of the occupied time lengths of two target data sequences in an embodiment corresponding to the data transmission method of the present application;

[0023] Figure 5 It is a schematic diagram of the occupied time lengths of two target data sequences in another embodiment corresponding to the data transmission method of the present application;

[0024] Figure 6 It is a schematic diagram of the first embodiment of two target data sequences transmitted under different frequency domain bandwidths in the data transmission method of the present application;

[0025] Figure 7 It is a schematic diagram of the second embodiment of two target data sequences transmitted under different frequency domain bandwidths in the data transmission method of the present application;

[0026] Figure 8 It is a schematic diagram of the third embodiment of two target data sequences transmitted under different frequency domain bandwidths in the data transmission method of the present application;

[0027] Figure 9 It is a schematic diagram of the fourth embodiment of two target data sequences transmitted under different frequency domain bandwidths in the data transmission method of the present application;

[0028] Figure 10 It is a schematic diagram of the fifth embodiment of two target data sequences transmitted under different frequency domain bandwidths in the data transmission method of the present application;

[0029] Figure 11 It is a schematic diagram of the sixth embodiment of two target data sequences transmitted under different frequency domain bandwidths in the data transmission method of the present application;

[0030] Figure 12 It is a schematic flowchart of an embodiment for generating the first data sequence to be transmitted in the data transmission method of the present application;

[0031] Figure 13 It is a schematic flowchart of an embodiment of the time-domain data sequence in the data transmission method of the present application;

[0032] Figure 14 It is a schematic diagram of an embodiment of the time window / time length for performing Fourier transform (DFT) on the time-domain data sequence in the data transmission method of the present application;

[0033] Figure 15 It is a schematic flowchart of an embodiment for generating the second data sequence to be transmitted in the data transmission method of the present application;

[0034] Figure 16 This is a schematic diagram of the hardware structure corresponding to the data transmission method in this application. Detailed implementation manners

[0035] In order to make the objectives, technical solutions and advantages of this application clearer, the following further describes this application in detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this application and are not used to limit this application.

[0036] It should be noted that although functional module division is performed in the device schematic diagram and the logical order is shown in the flowchart, in some cases, the steps shown or described can be executed in a different order from the module division in the device or the order in the flowchart. Terms such as "first" and "second" in the description, claims and the above accompanying drawings are used to distinguish similar objects and do not necessarily need to describe a specific order or sequence.

[0037] The flowchart shown in the accompanying drawings is only an exemplary illustration, and does not necessarily include all contents and operations / steps, nor does it necessarily need to be executed in the described order. For example, some operations / steps can be decomposed, while some operations / steps can be combined or partially combined. Therefore, the actual execution order may be changed according to the actual situation.

[0038] In the new radio (NR) of the fifth-generation mobile communication technology (5th generation wireless systems, abbreviated as: 5G), two technologies, namely cyclic prefix orthogonal frequency division multiplexing (CP-OFDM) and discrete Fourier transform spread orthogonal frequency division multiplexing (DFT-s-OFDM), are supported for data transmission. During the data transmission process, the same cyclic prefix CP is often used for users in the same cell to eliminate inter-symbol interference. However, CP will occupy time-frequency resources and reduce the spectral efficiency. Therefore, how to design the data transmission method to save the CP overhead and improve the spectral efficiency is an urgent problem to be solved. Based on this, this application provides a data transmission method, a wireless communication device, a storage medium and a program product, which can save the CP overhead and improve the spectral efficiency.

[0039] It should be noted that the data transmission method in this application can be applied to the communication between at least two communication devices located in a communication network topology. Among them, the communication device acting as the sender is used to obtain a first data sequence and a second data sequence, where the frequency domain bandwidths allocated to the first data sequence and the second data sequence are different; add a first header sequence before the first data sequence and a first tail sequence after the first data sequence to form a first target data sequence; add a second header sequence before the second data sequence and a second tail sequence after the second data sequence to form a second target data sequence; send the first target data sequence and the second target data sequence; where the data lengths of the first tail sequence and the second tail sequence are different; the data lengths of the first header sequence and the second header sequence are the same.

[0040] Among them, the first data sequence and the second data sequence can be data belonging to the same user or data of different users.

[0041] It should be noted that in the communication network topology, the communication device acting as the sender can be a user terminal or a network device such as a base station that encapsulates the original data using a cyclic prefix CP. For this, the embodiments of this application will not be elaborated one by one. The actual communication network topology can also be selectively set according to actual needs.

[0042] Exemplarily, referring to Figure 1a As shown, in the communication network topology, when the user terminal 1 and the network device communicate with each other and the user terminal 1 acts as the sender, when the user terminal 1 obtains the first data sequence and the second data sequence to be sent, it will obtain the first target data sequence corresponding to the first data sequence and the second target data sequence corresponding to the second data sequence according to the above method, and send the first target data sequence and the second target data sequence to the network device at the same time. Referring to Figure 1b As shown, in the communication network topology, when the user terminal 1, the user terminal 2 and the network device communicate with each other, and both the user terminal 1 and the user terminal 2 act as the sender, the user terminal 1 obtains the first data sequence to be sent and obtains the first target data sequence by referring to the above method, and the user terminal 2 obtains the second data sequence to be sent and obtains the second target data sequence by referring to the above method. At this time, the network device receives the first target data sequence from the user terminal 1 and the second target data sequence from the user terminal 2. It should be understood that both the first data sequence and the second data sequence are the original data generated by the corresponding communication device itself and to be sent to another communication device connected to it for communication.

[0043] It should be noted that in some other embodiments, referring to Figure 1a and Figure 1b In the network topology shown, the sender can be a network device and the receiver is a terminal device.

[0044] A network device is a device that can provide a random access function for a terminal device or a chip that can be set in the device. The device includes, but is not limited to: evolved Node B (eNB), radio network controller (RNC), Node B (NB), base station controller (BSC), base transceiver station (BTS), home base station (e.g., home evolved Node B, or home Node B, HNB), baseband unit (BBU), access point (AP) in a wireless fidelity (WIFI) system, wireless relay node, wireless backhaul node, transmission and reception point (TRP or transmission point, TP), etc. It can also be a gNB in a 5G system, such as NR, or a transmission point (TRP or TP), one or a group of antenna panels (including multiple antenna panels) of a base station in a 5G system, or it can also be a network node that constitutes a gNB or a transmission point, such as a baseband unit (BBU), or a distributed unit (DU, distributed unit), etc.

[0045] A terminal device, also known as user equipment (UE), mobile station (MS), mobile terminal (MT), terminal, etc., is a device that provides voice and / or data connectivity to users. For example, terminal devices include handheld devices with wireless connection functions, in-vehicle devices, etc. Currently, terminal devices can be: mobile phones, tablet computers, laptop computers, palmtop computers, mobile internet devices (MID), wearable devices, virtual reality (VR) devices, augmented reality (AR) devices, wireless terminals in industrial control, wireless terminals in self-driving, wireless terminals in remote medical surgery, wireless terminals in smart grid, wireless terminals in transportation safety, wireless terminals in smart city, or wireless terminals in smart home, or wireless terminals common to vehicle-to-vehicle (V2V), etc.

[0046] Referring to Figure 2 As shown, a data transmission method provided by the present application includes the following steps:

[0047] Step S100: Obtain a first data sequence and a second data sequence, where the frequency domain bandwidths allocated to the first data sequence and the second data sequence are different;

[0048] Step S200: Add a first header sequence before the first data sequence and add a first tail sequence after the first data sequence to form a first target data sequence;

[0049] Step S300: Add a second header sequence before the second data sequence and add a second tail sequence after the second data sequence to form a second target data sequence;

[0050] Step S400: Transmit the first target data sequence and the second target data sequence;

[0051] Among them, the data lengths of the first tail sequence and the second tail sequence are different; the data lengths of the first header sequence and the second header sequence are the same.

[0052] Therefore, by inserting a first header sequence and a second header sequence of the same length before the first data sequence and the second data sequence to be transmitted respectively, the interference to the first tail sequence and the second tail sequence after oversampling can be reduced. At this time, the first tail sequence and the second tail sequence can select tail sequences of required lengths according to the influence of multipath delay. For example, when the multipath delay becomes smaller, shorter first tail sequence and second tail sequence can be selected, so that the data volumes of the first data sequence and the second data sequence that can be transmitted are increased. Therefore, compared with the related art, the embodiments of the present application can save the CP overhead to improve the spectrum efficiency.

[0053] It should be noted that although the frequency domain bandwidths allocated to the first data sequence and the second data sequence are different, the first target data sequence and the second target data sequence can be transmitted on the same or different time-frequency resources respectively, that is, the first target data sequence and the second target data sequence can be transmitted at different times in different frequency domains, or at the same time in different frequency domains. The first data sequence and the second data sequence can be data transmitted by the same user on the same frequency domain bandwidth at different times, or data transmitted by two users on different frequency domain bandwidths at the same time.

[0054] Exemplarily, as shown in Figure 3 In some embodiments, a first header sequence S2 and a first tail sequence S1 are inserted before and after the first data sequence respectively to form a first target data sequence. A second header sequence S2' and a second tail sequence S1' are inserted before and after the second data sequence respectively to form a second target data sequence. The time lengths occupied by the first target data sequence and the second target data sequence are the same; wherein, the lengths of S1 and S1' are different, and the time lengths occupied by S2 and S2' are different.

[0055] It can be understood that step S400, sending the first target data sequence and the second target data sequence, includes:

[0056] Sending the first target data sequence through a first frequency domain resource;

[0057] Sending the second target data sequence through a second frequency domain resource;

[0058] Wherein, the frequency domain bandwidths corresponding to the first frequency domain resource and the second frequency domain resource are different.

[0059] It should be noted that the frequency domain bandwidth corresponding to the first frequency domain resource is the same as the frequency domain bandwidth allocated to the first data sequence. The frequency domain bandwidth corresponding to the second frequency domain resource is the same as the frequency domain bandwidth allocated to the second data sequence. The time lengths occupied by the first frequency domain resource and the second frequency domain resource can be the same or different.

[0060] It should be noted that, in some embodiments, the different frequency-domain bandwidths corresponding to the first domain resource and the second frequency-domain resource indicate that the frequency-domain bandwidths allocated to two different users are different; in some embodiments, the different frequency-domain bandwidths corresponding to the first domain resource and the second frequency-domain resource indicate that the bandwidths of different sub-bands of the same user are different; in some embodiments, the different frequency-domain bandwidths corresponding to the first domain resource and the second frequency-domain resource indicate that the frequency-domain bandwidths allocated to different OFDM symbols of the same user are different.

[0061] Exemplarily, the first target data sequence corresponding to the first data sequence is target data sequence 1; the second target data sequence corresponding to the second data sequence is target data sequence 2; since the frequency-domain bandwidths allocated to the first data sequence and the second data sequence are different, the frequency-domain bandwidths allocated to target data sequence 1 and target data sequence 2 are different. Specifically, when the subcarrier spacing sizes of the two target data sequences are the same, as Figure 4 shown, and their subcarrier spacing is both △f, then the number of subcarriers allocated to target data sequence 1 and target data sequence 2 is different, satisfying L1≠L2, where L1 is the number of data included in target data sequence 1 and L2 is the number of data included in target data sequence 2. The time lengths occupied by the first target data sequence and the second target data sequence are both equal to the reciprocal of the subcarrier spacing size 1 / △f. At this time, the time lengths occupied by the first target data sequence and the second target data sequence are the same. Specifically, when the subcarrier spacing sizes are different, referring to Figure 5 shown, the subcarrier spacing of target data sequence 1 is △f; the subcarrier spacing of target data sequence 2 is 2△f, that is, the subcarrier spacing size of target data sequence 1 is half of the subcarrier spacing size of target data sequence 2; the number of subcarriers of target data sequence 1 and target data sequence 2 may be the same or different, satisfying L1≠2×L2. Then the time length occupied by target data sequence 1 is equal to the reciprocal of the subcarrier spacing size 1 / △f; the time length occupied by target data sequence 2 is equal to the reciprocal of the corresponding subcarrier spacing size 1 / (2△f). At this time, the time lengths occupied by the first target data sequence and the second target data sequence are different. Figure 5 In , the time length of target data sequence 2 is half of the time length of target data sequence 1.

[0062] It can be understood that the number of data included in the first header sequence and the second header sequence is the same; the number of data included in the first tail sequence and the second tail sequence is different.

[0063] It can be understood that the first header sequence and the second header sequence are the same sequence; the first tail sequence and the second tail sequence are different sequences.

[0064] It is understandable that the time lengths occupied by the first header sequence and the second header sequence are different; the time lengths occupied by the first tail sequence and the second tail sequence may be the same or different.

[0065] It should be understood that when the frequency-domain bandwidth allocated to the user is relatively large, the time length occupied by the header sequence inserted before the data sequence in the time domain can be shortened correspondingly, so as to expand the time length occupied by the data sequence, and further improve the spectrum efficiency. For example, if more frequency-domain bandwidth is allocated to the first data sequence, the time length occupied by the first header sequence is shorter. At this time, for the first target data, the length of the first data sequence it can carry is longer, that is, it can carry more data volume. Therefore, the spectrum efficiency can be improved. Therefore, the time lengths occupied by the first header sequence and the second header sequence are different; the time lengths occupied by the first tail sequence and the second tail sequence may be the same or different.

[0066] Exemplarily, such as Figure 6 the subcarrier intervals in the embodiments shown are the same. Such as Figure 6 As shown, the first target data sequence corresponding to the first data sequence is target data sequence 1, the second target data sequence corresponding to the second data sequence is target data sequence 2, the frequency-domain bandwidth allocated to the first data sequence is smaller than that allocated to the second data sequence, the first data sequence contains 12 data, and the second data sequence contains 24 data. Then, a first header sequence S2 containing 2 data can be inserted in front of the first data sequence, and a second header sequence S2' containing 2 data can be inserted in front of the second data sequence. At this time, the number of data contained in the header sequences inserted in front of the first data sequence and the second data sequence is the same. Such as Figure 6As shown, a first tail sequence S1 containing 4 data is inserted after the first data sequence, and a second tail sequence S1' containing 10 data is inserted after the second data sequence; at this time, the number of data contained in S1 and S1' is different. Therefore, the target data sequence 1 contains 18 data (2 + 12 + 4); the target data sequence 2 contains 36 data (2 + 24 + 10). At this time, the number of data contained in the target data sequence 1 and the target data sequence 2 is different. Correspondingly, the first header sequence S2 occupies a time length of t1, and the second header sequence S2' occupies a time length of t0, that is, the time length occupied by the first header sequence S2 and the time length occupied by the second header sequence S2' are different; and the time length occupied by the first header sequence S2 > the time length occupied by the second header sequence S2'. The first tail sequence S1 occupies a time length of (t4 - t3); the second tail sequence S1' occupies a time length of (t4 - t2), that is, the time length occupied by the first tail sequence S1 and the time length occupied by the second tail sequence S1' are different. At this time, for the target data sequence 1, it occupies a time length of t4; for the target data sequence 2, it occupies a time length of t4. The two target data sequences occupy the same time.

[0067] Exemplarily, as Figure 8 shown, the first target data sequence corresponding to the first data sequence is the target data sequence 1, and the second target data sequence corresponding to the second data sequence is the target data sequence 2. The frequency domain bandwidth allocated to the first data sequence is less than the frequency domain bandwidth allocated to the second data sequence. The first data sequence contains 12 data. A first header sequence S2 containing 2 data is inserted in front of the first data sequence; a first tail sequence S1 containing 4 data is inserted after the first data sequence to form the target data sequence 1, and the target data sequence 1 contains 18 data. The second data sequence contains 26 data. A second header sequence S2' containing 2 data is inserted in front of the second data sequence; a second tail sequence S1' containing 8 data is inserted after the second data sequence to form the target data sequence 2, and the target data sequence 2 contains 36 data. At this time, the number of data contained in the first data sequence and the second data sequence is different; the number of data contained in the first header sequence S2 and the second header sequence S2' is the same; the number of data contained in the first tail sequence S1 and the second tail sequence S1' is different; therefore, the number of data contained in the two target data sequences is different. Correspondingly, as Figure 8As shown, the time length occupied by the first data sequence is (t2 - t1), the time length occupied by the first header sequence S2 is t1, and the time length occupied by the first tail sequence S1 is (t3 - t2); therefore, the time length occupied by the target data sequence 1 is t3. Correspondingly, the time length occupied by the second data sequence is (t2 - t0), the time length occupied by the second header sequence S2' is t0, and the time length occupied by the second tail sequence S1' is (t3 - t2); therefore, the time length occupied by the target data sequence 2 is t3. That is, the time lengths occupied by the first data sequence and the second data sequence are different; the time lengths occupied by the first header sequence S2 and the second header sequence S2' are different and the time lengths occupied by the first tail sequence S1 and the second tail sequence S1' are the same; the two target data sequences occupy the same time.

[0068] According to the above Figure 6 and Figure 8 embodiments, it can be known that the time lengths occupied by the first header sequence and the second header sequence are different; the time lengths occupied by the first tail sequence and the second tail sequence are the same or different.

[0069] It can be understood that the ratio of the time lengths occupied by the first header sequence and the second header sequence is equal to the reciprocal of the ratio of the frequency domain bandwidths allocated to the first data sequence and the second data sequence.

[0070] It should be noted that taking the frequency domain bandwidth of the first data sequence as B1 and the frequency domain bandwidth of the second data sequence as B2 as an example, then △t1 / △t2 = B2 / B1 is satisfied, where △t1 is the time length occupied by the first header sequence; △t2 is the time length occupied by the second header sequence, and the frequency domain bandwidths of B1 and B2 can both be confirmed according to the number of subcarriers and the subcarrier spacing. For example, if the first data sequence and the second data sequence include K1 and K2 subcarriers respectively, and the spacing between the subcarriers of the first data sequence is △f1; the spacing between the subcarriers of the second data sequence is △f2, then the frequency domain bandwidths allocated to the first data sequence and the second data sequence are respectively: B1 = K1×△f1, B2 = K2×△f2. As Figure 7 shown, Figure 7 in the number of data and the time length occupied by the first data sequence and the second data sequence are proportional, and the number of data is proportional to the frequency domain bandwidth. Figure 7 in the time length of S2' in the target data sequence 2 is 1 / 4 of the time length of S2 in the target data sequence 1.

[0071] It can be understood that the time lengths occupied by the first data sequence and the second data sequence are the same or different.

[0072] Exemplarily, referring to Figures 6 to 11As shown, the time lengths occupied by the first data sequence and the second data sequence can be the same or different.

[0073] It can be understood that the frequency domain bandwidth allocated to the first data sequence is greater than that allocated to the second data sequence, and the time length occupied by the first header sequence is less than that occupied by the second header sequence.

[0074] Exemplarily, as Figure 7 shown, the first target data sequence corresponding to the first data sequence is target data sequence 1, the second target data sequence corresponding to the second data sequence is target data sequence 2, the frequency domain bandwidth allocated to the first data sequence is less than that allocated to the second data sequence, the first data sequence contains 12 data, a first header sequence S2 containing 2 data is inserted in front of the first data sequence, and a first tail sequence S1 containing 4 data is inserted behind the first data sequence, then target data sequence 1 contains 18 data; the second data sequence contains 48 data, a second header sequence S2' containing 2 data is inserted in front of the second data sequence, and a first tail sequence S1' containing 22 data is inserted behind the second data sequence, then target data sequence 2 contains 72 data. At this time, the number of data contained in the first data sequence and the second data sequence is different, the number of data contained in the first header sequence S2 and the first header sequence S2' is the same, the number of data contained in the first tail sequence S1 and the second tail sequence S1' is different; the number of data contained in target data sequence 1 and target data sequence 2 is different. Correspondingly, the time length occupied by the first data sequence is (t3 - t1), the time length occupied by the first header sequence S2 inserted in front of the first data sequence is t1, and the time length occupied by the first tail sequence S1 inserted behind the first data sequence is (t4 - t3); the time length occupied by target data sequence 1 is t4. The time length occupied by the second data sequence is (t2 - t0), the time length occupied by the sequence S2' inserted in front of the second data sequence is t0, and the time length occupied by the sequence S1' inserted behind the second data sequence is (t4 - t2); the time length occupied by target data sequence 2 is t4. That is, the time lengths occupied by the two target data sequences are the same; the time lengths occupied by the header sequences inserted in front of the first data sequence and the second data sequence are different; the time lengths occupied by the tail sequences inserted behind the first data sequence and the second data sequence are different; the time lengths occupied by the first data sequence and the second data sequence are the same.

[0075] According to the above Figure 6 and Figure 7 embodiments, it can be known that when the frequency domain bandwidth allocated to the first data sequence is larger, the time length occupied by the first header sequence is smaller. When the frequency domain bandwidth allocated to the second data sequence is larger, the time length occupied by the second header sequence is smaller.

[0076] It is understandable that the first target data sequence and the second target data sequence occupy the same time length, but the number of data contained in the first target data sequence and the second target data sequence is different.

[0077] It is understandable that the first target data sequence and the second target data sequence occupy different time lengths, and the number of data contained in the first target data sequence and the second target data sequence may be the same or different.

[0078] It is understandable that the smaller the time length occupied by the first header sequence, the more data the first target data sequence contains;

[0079] the smaller the time length occupied by the second header sequence, the more data the second target data sequence contains.

[0080] It is understandable that the ratio of the time lengths occupied by the first target data sequence and the second target data sequence is equal to the reciprocal of the ratio of the subcarrier spacing sizes of the frequency domain bandwidths allocated to the first data sequence and the second data sequence.

[0081] Exemplarily, assume that the time length occupied by the first target data sequence is △t3; the time length occupied by the second target data sequence is △t4, then △t3 / △t4 = △f2 / △f1. Wherein, △f1 is the subcarrier spacing of the frequency domain bandwidth allocated to the first data sequence; △f2 is the subcarrier spacing of the frequency domain bandwidth allocated to the second data sequence.

[0082] It is understandable that the subcarrier spacing sizes of the frequency domain bandwidths allocated to the first data sequence and the second data sequence are the same, and the first target data sequence and the second target data sequence occupy the same time length;

[0083] Or,

[0084] the subcarrier spacing sizes of the frequency domain bandwidths allocated to the first data sequence and the second data sequence are different, and the first target data sequence and the second target data sequence occupy different time lengths.

[0085] Exemplarily, the subcarrier spacing sizes of the frequency domain bandwidths allocated to the currently allocated first data sequence and the second data sequence are the same, and the first target data sequence and the second target data sequence occupy the same time length. Or, the subcarrier spacing sizes of the frequency domain bandwidths allocated to the currently allocated first data sequence and the second data sequence are different, and the first target data sequence and the second target data sequence occupy different time lengths.

[0086] Exemplarily, Figure 9 the subcarrier spacings of the frequency domain bandwidths allocated in [the context] are not the same. Specifically, as Figure 9As shown, the first target data sequence corresponding to the first data sequence is target data sequence 1, and the second target data sequence corresponding to the second data sequence is target data sequence 2. The frequency domain bandwidth allocated to the first data sequence is less than that allocated to the second data sequence. The first data sequence contains 12 data. A first header sequence S2 containing 2 data is inserted in front of the first data sequence; a first tail sequence S1 containing 4 data is inserted behind the first data sequence to form target data sequence 1, and target data sequence 1 contains 18 data. The second data sequence contains 12 data. A second header sequence S2' containing 2 data is inserted in front of the second data sequence; a second tail sequence S1' containing 4 data is inserted behind the second data sequence. At this time, target data sequence 2 is formed, and target data sequence 2 contains 18 data. That is, the number of data contained in the first data sequence and the second data sequence is the same; and the number of data contained in the first header sequence S2 and the second header sequence S2' is the same; and the number of data contained in the first tail sequence S1 and the second tail sequence S1' is the same. At this time, the number of data contained in the two target data sequences is the same. Correspondingly, the time length occupied by the first data sequence is (t4 - t1), the time length occupied by the first header sequence S2 is t1, and the time length occupied by the first tail sequence S1 is (t5 - t4); that is, the time length occupied by target data sequence 1 is t5. Correspondingly, the time length occupied by the second data sequence is (t2 - t0), the time length occupied by the second sequence S2' is t0, and the time length occupied by the second tail sequence S1' is (t3 - t2); that is, the time length occupied by target data sequence 2 is t3. That is, the time lengths occupied by the first data sequence and the second data sequence are different; and the time lengths occupied by the first header sequence S2 and the second header sequence S2' are different; and the time lengths occupied by the first tail sequence S1 and the second tail sequence S1' are different; therefore, the time occupied by the two target data sequences is different. Among them, the time length of target data sequence 2 is half of the time length of target data sequence 1; the time length of S2' of target data sequence 2 is half of the time length of S2 corresponding to target data sequence 1, the time length of the second data sequence is half of the time length of the first data sequence; the time length of the second tail sequence S1' is half of the time length of the first tail sequence S1.

[0087] According to Figure 6 and Figure 9 's embodiments, the subcarrier spacing of the first data sequence and the second data sequence can be the same or different. Figure 6 The subcarrier spacing is the same and the time length is the same; Figure 9 The subcarrier spacing is different and the time length is different.

[0088] It is understandable that the first target data sequence and the second target data sequence occupy the same time length, and the number of data included in the first target data sequence and the second target data sequence is different;

[0089] Or,

[0090] the first target data sequence and the second target data sequence occupy different time lengths, and the number of data included in the first target data sequence and the second target data sequence is the same or different.

[0091] It should be noted that when the first target data sequence and the second target data sequence occupy the same time length, in some embodiments, the number of data included in the first target data sequence and the second target data sequence is different.

[0092] Exemplarily, such as Figure 10As shown, the two first data sequences are the first data sequence and the second data sequence respectively. The frequency domain bandwidth allocated to the first data sequence is greater than that allocated to the second data sequence. The first data sequence contains 44 data. Sequence S2 containing 4 data is inserted in front of the first data sequence; sequence S1 containing 6 data is inserted behind the first data sequence; to form the target data sequence 1, and the target data sequence 1 contains 54 data. The second data sequence contains 8 data. Sequence S2' containing 4 data is inserted in front of the second data sequence; sequence S1' containing 6 data is inserted behind the second data sequence; to form the target data sequence 2, and the target data sequence 2 contains 18 data. The number of data contained in the two first data sequences is different; the number of data contained in the sequence S2 inserted in front of the two first data sequences is the same; the number of data contained in the sequence S1 inserted behind the first data sequence and the second data sequence is the same; the number of data contained in the target data sequence 1 and the target data sequence 2 is different. The time length occupied by the first data sequence is (t4 - t0), the time length occupied by the sequence S2 inserted in front of the first data sequence is t0, and the time length occupied by the first sequence S1 inserted behind the first data sequence is (t5 - t4); that is, the time length occupied by the target data sequence 1 is t5. The time length occupied by the second data sequence is (t2 - t1), the time length occupied by the second header sequence S2' inserted in front of the second data sequence is t1, and the time length occupied by the second tail sequence S1' inserted behind the second data sequence is (t3 - t2); at this time, the time length occupied by the target data sequence 2 is t3. That is, the time lengths occupied by the first data sequence and the second data sequence are different; the time lengths occupied by the header sequences inserted into the first data sequence and the second data sequence are different; the time lengths occupied by the tail sequences inserted behind the first data sequence and the second data sequence are different; the times occupied by the two target data sequences are different. Among them, the time length of the target data sequence 2 is half of the time length of the target data sequence 1; the time length of S2 in the target data sequence 1 is 2 / 3 of the time length of S2 in the target data sequence 2.

[0093] It should be understood that Figure 10 taking the embodiment shown as an example, the time length can be calculated as follows:

[0094] (1) The time lengths of the two target data sequences are related to the subcarrier spacing. If the subcarrier spacing is 15 kHz for both, then the time lengths of these two target data sequences are the same. If one is 15 kHz and the other is 30 kHz, then the time length of the larger subcarrier spacing is shorter and is half of the time length of 15 kHz.

[0095] (2) For the time length of S2 in the target data sequence 1: 4 / (15 kHz * 54); where 4 is the number of data in S2 and 54 is the number of data in the target data sequence 1.

[0096] (3) For the time length of S2' in the target data sequence 2: 4 / (30 kHz * 18); where 4 is the number of data in S2' and 18 is the number of data in the target data sequence 1.

[0097] Exemplarily, as Figure 11 shown, the frequency domain bandwidth allocated to the first data sequence is less than that allocated to the second data sequence. The first data sequence contains 12 data. Insert a first header sequence S2 in front of the first data sequence, and the first header sequence S2 contains 2 data; insert a first tail sequence S1 behind the first data sequence, and the first tail sequence S1 contains 4 data; to form the target data sequence 1, and the target data sequence 1 contains 18 data. The second data sequence contains 26 data. Insert a second header sequence S2' in front of the second data sequence, and the second header sequence S2' contains 2 data; insert a second tail sequence S1' behind the second data sequence, and the second tail sequence S1' contains 8 data to form the target data sequence 2, and the target data sequence 2 contains 36 data. That is, the number of data contained in the first data sequence and the second data sequence is different; the number of data contained in the first header sequence S2 and the second header sequence S2' is the same; the number of data contained in the first tail sequence S1 and the second tail sequence S1' is different; the number of data contained in the target data sequence 1 and the target data sequence 2 is different. Correspondingly, the time length occupied by the first data sequence is (t4 - t1), the time length occupied by the first header sequence S2 inserted in front of the first data sequence is t1, and the time length occupied by the first tail sequence S1 inserted behind the first data sequence is (t5 - t4); the time length occupied by the target data sequence 1 is t5. The time length occupied by the second data sequence is (t2 - t0), the time length occupied by the second header sequence S2' inserted in front of the second data sequence is t0, and the time length occupied by the second tail sequence S1' inserted behind the second data sequence is (t3 - t2); the time length occupied by the target data sequence 2 is t3. That is, the time lengths occupied by the first data sequence and the second data sequence are different; the time lengths occupied by the first header sequence S2 and the second header sequence S2' are different; the time lengths occupied by the first tail sequence S1 and the second tail sequence S1' are different; the times occupied by the two second data sequences are different. Among them, the time length of the target data sequence 2 is half of the time length of the target data sequence 1; the time length of S2 in the target data sequence 1 is 4 times the time length of S2' in the target data sequence 2.

[0098] Therefore, Figure 8 and Figure 11In contrast, the difference is that the time occupied by the two target data sequences is different; Figure 9 Compared with Figure 11 the larger the frequency-domain bandwidth, the shorter the time-domain length of the header sequence.

[0099] It can be understood that the time length of the first tail sequence is determined according to the terminal delay requirement corresponding to the first data sequence;

[0100] The time length of the second tail sequence is determined according to the terminal delay requirement corresponding to the second data sequence.

[0101] It can be understood that the first header sequence is a reference signal sequence or a sequence known to the network device;

[0102] The second header sequence is a reference signal sequence or a sequence known to the network device;

[0103] The first tail sequence is a reference signal sequence or a sequence known to the network device;

[0104] The second tail sequence is a reference signal sequence or a sequence known to the network device.

[0105] It can be understood that sending the first target data sequence includes:

[0106] Performing a first Fourier transform and a first inverse Fourier transform on the first target data sequence in sequence to obtain the transformed first target data sequence, and sending the transformed first target data sequence;

[0107] Among them, the time window of the first Fourier transform is equal to the time length occupied by the first target data sequence, and the start point and end point of the time of the first Fourier transform correspond to the start point and end point of the time of the first target data sequence;

[0108] The number of points of the first inverse Fourier transform is greater than the number of points of the first Fourier transform, and the number of data of the transformed first target data sequence is greater than the number of data of the first target data sequence;

[0109] The time length occupied by the first target data sequence is equal to the OFDM symbol length occupied by the first target data sequence, and the time length occupied by the transformed first target data sequence is equal to the OFDM symbol length occupied by the transformed first target data sequence.

[0110] Exemplarily, taking the first data sequence as an example, Figure 12Records the relationship between the waveform modulation of the first data sequence and the frequency-domain bandwidths allocated to the first data sequence, the first target data sequence, the first header sequence, and the first tail sequence. First, insert the first header sequence S2 before the first data sequence and insert the first tail sequence S1 after the first data sequence to form the first target data sequence. At this time, the time-domain length of the first target data sequence is equal to the OFDM symbol length. Set the number of points of the first Discrete Fourier Transform (DFT) to the number of data in the first target data sequence and then perform the Fourier transform. Set the number of points of the first Inverse Fast Fourier Transform (IFFT) to be greater than the number of points of the first Fourier transform, that is, add zero subcarriers to the frequency-domain data after the first Fourier transform of the first target data sequence, and then perform the oversampled Inverse Fast Fourier Transform (IFFT). In this way, the first target data sequence obtained after the first Inverse Fast Fourier Transform contains more data than the length of the first target data sequence before the first Fourier transform process. At this time, the time-domain length of the transformed first target data sequence is also equal to the OFDM length. The frequency-domain bandwidth allocated to the transformed first target data sequence is equal to the frequency-domain bandwidth allocated to the first data sequence.

[0111] Exemplarily, referring to Figure 13 as shown, Figure 13 if the first data sequence in is the data transmitted in the time domain, that is, the second target data sequence is a time-domain data sequence. At this time, the time window / time length of the Fourier transform (DFT) of the time-domain data sequence is as Figure 14 shown. Figure 13 and Figure 14 in, perform the Fourier transform (DFT) on the time-domain data sequence. The time window of the Fourier transform (DFT) is the time window of the time-domain data sequence. Taking the time-domain data as the first target data sequence as an example, the time length of the Fourier transform (DFT) is the time length of the first target data sequence. The start point and end point of the time window of the Fourier transform (DFT) are the start point and end point of the time-domain data sequence respectively.

[0112] It can be understood that sending the second target data sequence includes:

[0113] Perform the second Fourier transform and the second Inverse Fast Fourier Transform on the second target data sequence in sequence to obtain the transformed second target data sequence, and send the transformed second target data sequence;

[0114] wherein, the time window of the second Fourier transform is equal to the time length occupied by the second target data sequence, and the start point and end point of the second Fourier transform correspond to the start point and end point of the second target data sequence;

[0115] The number of points of the second inverse Fourier transform is greater than the number of points of the second Fourier transform, and the number of data in the transformed second target data sequence is greater than the number of data in the second target data sequence;

[0116] The time length occupied by the second target data sequence is equal to the OFDM symbol length occupied by the second target data sequence, and the time length occupied by the transformed second target data sequence is equal to the OFDM symbol length occupied by the transformed second target data sequence.

[0117] Exemplarily, taking the second data sequence as an example, Figure 15 For the frequency-domain bandwidth relationship allocated to the second data sequence for waveform modulation and the second data sequence, the second target data sequence, the second header sequence, and the second tail sequence. First, insert the second header sequence S2' before the second data sequence and insert the second tail sequence S1' after the second data sequence to form the second target data sequence. At this time, the time domain length of the second target data sequence is equal to the OFDM symbol length. Set the number of points of the second Fourier transform (Discrete Fourier Transform, DFT) to the number of data in the second target data sequence and then perform the Fourier transform. Set the number of points of the second inverse Fourier transform (Inverse Fast Fourier Transform, IFFT) to be greater than the number of points of the second Fourier transform, that is, add zero subcarriers to the frequency-domain data after performing the second Fourier transform on the second target data sequence, and then perform the oversampled inverse Fourier transform (IFFT). In this way, the number of data included in the second target data sequence obtained after performing the second inverse Fourier transform is greater than the length of the second target data sequence before the second Fourier transform is not processed. At this time, the time domain length of the transformed second target data sequence is also equal to the OFDM length. The frequency-domain bandwidth allocated to the transformed second target data sequence is equal to the frequency-domain bandwidth allocated to the second data sequence. When the first target data sequence sent is obtained as shown in the figure, when the frequency-domain bandwidths allocated to the first data sequence and the second data sequence are different, the frequency-domain bandwidths allocated to the transformed first target data sequence and the transformed first target data sequence are also different.

[0118] Exemplarily, taking Figure 11Take the illustrated embodiment as an example. Assume that the frequency-domain bandwidths allocated to the first data sequence and the second data sequence include K1 and K2 subcarriers respectively, with subcarrier intervals of △f1 and △f2. Specifically, assume K1 = 18, K2 = 36, △f1 = 15 kHz, and △f2 = 30 kHz. Then the frequency-domain bandwidths allocated to the first data sequence and the second data sequence are B1 = 18 × 15 kHz and B2 = 36 × 30 kHz respectively. At this time, the frequency-domain bandwidth allocated to the second data sequence is greater than that allocated to the first data sequence, so the time length occupied by the second header sequence S2' inserted in front of the second data sequence is less than the time length occupied by the second sequence S2 inserted in front of the first data sequence. The frequency-domain bandwidth allocated to the second data sequence is 4 times that allocated to the first data sequence, so the time length occupied by the second sequence S2' inserted in front of the second data sequence is 1 / 4 of the time length occupied by the first header sequence S2 inserted in front of the first data sequence.

[0119] Exemplarily, referring to Figure 13 shown, Figure 13 where the second data sequence is time-domain data, i.e., the data transmitted in the time domain, that is, the second target data sequence is a time-domain data sequence. Then the time window / time length for performing the Fourier transform (DFT) on the time-domain data sequence is as Figure 14 shown. Figure 13 and Figure 14 In, the Fourier transform (DFT) is performed on the time-domain data sequence. The time window of the Fourier transform (DFT) is the time window of the time-domain data sequence, that is, the time length of the Fourier transform (DFT) is the time length of the second target data sequence. The start point and end point of the time of the Fourier transform (DFT) time window are respectively the start point and end point of the time of the time-domain data sequence.

[0120] It can be understood that, referring to Figure 16 shown, an embodiment of the present application further provides a wireless communication device, including:

[0121] At least one processor 101;

[0122] At least one memory 102, configured to store at least one program, which implements the above data transmission method when executed by at least one processor 101.

[0123] The memory 102, as a non-transitory network system, can be used to store non-transitory software programs and non-transitory computer-executable programs. In addition, the memory 102 may include high-speed random access memory, and may also include non-transitory memory, such as at least one magnetic disk storage device, a flash memory device, or other non-transitory solid-state storage devices. In some embodiments, the memory 102 optionally includes a memory 102 that is remotely disposed relative to the processor 101, and these remote memories 102 can be connected to the processor 101 through a network. Examples of the above-mentioned network include but are not limited to the Internet, an intranet, a local area network, a mobile communication network, and combinations thereof.

[0124] The memory 102 can be implemented in the form of a read-only memory (ROM), a static storage device, a dynamic storage device, or a random access memory (RAM), etc. The memory 102 can store an operating system and other application programs. When implementing the technical solutions provided in the embodiments of this specification through software or firmware, the relevant program codes are stored in the memory 102 and are called by the processor 101 to execute the methods of the embodiments of this application.

[0125] The processor 101 can be implemented in ways such as a general-purpose CPU (Central Processing Unit), a microprocessor, an application-specific integrated circuit (ASIC), or one or more integrated circuits, and is used to execute relevant programs to implement the technical solutions provided in the embodiments of this application.

[0126] In some embodiments, the wireless communication device further includes:

[0127] An input / output interface for implementing information input and output;

[0128] A communication interface for implementing communication interaction between this device and other devices, which can be implemented through a wired manner (such as USB, network cable, etc.) or through a wireless manner (such as a mobile network, WIFI, Bluetooth, etc.);

[0129] A bus for transmitting information between various components of the device (such as the processor 101, the memory 102, the input / output interface, and the communication interface);

[0130] Among them, the processor 101, the memory 102, the input / output interface, and the communication interface can achieve communication connections with each other inside the device through the bus.

[0131] An embodiment of the present application further provides a computer-readable storage medium storing computer-executable instructions for implementing a data transmission method.

[0132] An embodiment of the present application further provides a computer program product including a computer program or computer instructions. The computer program or computer instructions are stored in a computer-readable storage medium. A processor of a computer device reads the computer program or computer instructions from the computer-readable storage medium, and the processor executes the computer program or computer instructions, so that the computer device implements a data transmission method.

[0133] The system architecture and application scenarios described in the embodiments of the present application are for more clearly illustrating the technical solutions of the embodiments of the present application, and do not constitute a limitation on the technical solutions provided by the embodiments of the present application. As those skilled in the art know, with the evolution of the system architecture and the emergence of new application scenarios, the technical solutions provided by the embodiments of the present application are equally applicable to similar technical problems.

[0134] Those of ordinary skill in the art can understand that all or some of the steps and systems disclosed above can be implemented as software, firmware, hardware, and appropriate combinations thereof. Some physical components or all physical components can be implemented as software executed by a processor, such as a central processing unit, a digital signal processor, or a microprocessor, or can be implemented as hardware, or can be implemented as an integrated circuit, such as an application-specific integrated circuit. Such software can be distributed on a computer-readable medium, which can include a computer storage medium (or non-transitory medium) and a communication medium (or transitory medium). As is well known to those of ordinary skill in the art, the term computer storage medium includes volatile and non-volatile, removable and non-removable media implemented in any method or technology for storing information, such as computer-readable instructions, data structures, program modules, or other data. Computer storage media include, but are not limited to, RAM, ROM, EEPROM, flash memory or other memory technologies, CD-ROM, digital versatile disk (DVD) or other optical disk storage, magnetic cassette, tape, magnetic disk storage or other magnetic storage devices, or any other medium that can be used to store the desired information and can be accessed by a computer. In addition, as is well known to those of ordinary skill in the art, a communication medium typically includes computer-readable instructions, data structures, program modules, or other data in a modulated data signal such as a carrier wave or other transmission mechanism, and can include any information delivery medium.

[0135] The above has illustrated some embodiments of the present application with reference to the accompanying drawings, and thus does not limit the scope of rights of the present invention. Any modifications, equivalent replacements, and improvements made by those skilled in the art without departing from the scope and essence of the present invention shall be within the scope of rights of the present application.

Claims

1. A data transmission method, the method comprising: Obtaining a first data sequence and a second data sequence, wherein the frequency domain bandwidths allocated to the first data sequence and the second data sequence are different; Adding a first header sequence before the first data sequence and adding a first tail sequence after the first data sequence to form a first target data sequence; Adding a second header sequence before the second data sequence and adding a second tail sequence after the second data sequence to form a second target data sequence; Sending the first target data sequence and the second target data sequence; Wherein, the data lengths of the first tail sequence and the second tail sequence are different; the data lengths of the first header sequence and the second header sequence are the same.

2. The method according to claim 1, characterized in that, The sending the first target data sequence and the second target data sequence includes: Sending the first target data sequence through a first frequency domain resource; Sending the second target data sequence through a second frequency domain resource; Wherein, the frequency domain bandwidths corresponding to the first frequency domain resource and the second frequency domain resource are different.

3. The method according to claim 1, wherein The number of data included in the first header sequence and the second header sequence is the same; the number of data included in the first tail sequence and the second tail sequence is different.

4. The method according to claim 1, characterized in that, The first header sequence and the second header sequence are the same sequence; the first tail sequence and the second tail sequence are different sequences.

5. The method according to claim 1, wherein The time lengths occupied by the first header sequence and the second header sequence are different; the time lengths occupied by the first tail sequence and the second tail sequence are the same or different.

6. The method according to claim 1, wherein The ratio of the time lengths occupied by the first header sequence and the second header sequence is equal to the reciprocal of the ratio of the frequency domain bandwidths allocated to the first data sequence and the second data sequence.

7. The method according to claim 1, characterized in that, The time lengths occupied by the first data sequence and the second data sequence are the same or different.

8. The method according to claim 1, wherein The frequency domain bandwidth allocated to the first data sequence is greater than the frequency domain bandwidth allocated to the second data sequence, and the time length occupied by the first header sequence is less than the time length occupied by the second header sequence.

9. The method according to claim 1, characterized in that, The larger the frequency domain bandwidth allocated to the first data sequence, the smaller the time length occupied by the first header sequence.

10. The method according to claim 1, characterized in that, The larger the frequency domain bandwidth allocated to the second data sequence, the smaller the time length occupied by the second header sequence.

11. The method according to claim 1, characterized in that The time lengths occupied by the first target data sequence and the second target data sequence are the same, and the number of data included in the first target data sequence and the second target data sequence is different.

12. The method according to claim 1, wherein The time lengths occupied by the first target data sequence and the second target data sequence are different, and the number of data included in the first target data sequence and the second target data sequence is the same or different.

13. The method according to claim 1, wherein The smaller the time length occupied by the first header sequence, the more data the first target data sequence includes; The smaller the time length occupied by the second header sequence, the more data the second target data sequence includes.

14. The method according to claim 1, wherein The ratio of the time lengths occupied by the first target data sequence and the second target data sequence is equal to the reciprocal of the ratio of the subcarrier spacing sizes of the frequency domain bandwidths allocated to the first data sequence and the second data sequence.

15. The method according to claim 1, wherein The subcarrier spacing sizes of the frequency domain bandwidths allocated to the first data sequence and the second data sequence are the same, and the time lengths occupied by the first target data sequence and the second target data sequence are the same; Or, The subcarrier spacing sizes of the frequency domain bandwidths allocated to the first data sequence and the second data sequence are different, and the time lengths occupied by the first target data sequence and the second target data sequence are different.

16. The method according to claim 1, wherein The time lengths occupied by the first target data sequence and the second target data sequence are the same, and the number of data included in the first target data sequence and the second target data sequence is different; Or, The time lengths occupied by the first target data sequence and the second target data sequence are different, and the number of data included in the first target data sequence and the second target data sequence may be the same or different.

17. The method according to claim 1, characterized in that, The time length of the first tail sequence is determined according to the terminal delay requirement corresponding to the first data sequence; The time length of the second tail sequence is determined according to the terminal delay requirement corresponding to the second data sequence.

18. The method according to claim 1, wherein The first header sequence is a reference signal sequence or a sequence known to the network device; The second header sequence is a reference signal sequence or a sequence known to the network device; The first tail sequence is a reference signal sequence or a sequence known to the network device; The second tail sequence is a reference signal sequence or a sequence known to the network device.

19. The method according to claim 1, characterized in that, Sending the first target data sequence includes: Performing a first Fourier transform and a first inverse Fourier transform on the first target data sequence in sequence to obtain the transformed first target data sequence, and sending the transformed first target data sequence; Wherein, the time window of the first Fourier transform is equal to the time length occupied by the first target data sequence, and the start point and end point of the time of the first Fourier transform correspond to the start point and end point of the time of the first target data sequence; The number of points of the first inverse Fourier transform is greater than the number of points of the first Fourier transform, and the number of data of the transformed first target data sequence is greater than the number of data of the first target data sequence; The time length occupied by the first target data sequence is equal to the OFDM symbol length occupied by the first target data sequence, and the time length occupied by the transformed first target data sequence is equal to the OFDM symbol length occupied by the transformed first target data sequence.

20. The method according to claim 1, characterized in that, Sending the second target data sequence includes: Performing a second Fourier transform and a second inverse Fourier transform on the second target data sequence in sequence to obtain the transformed second target data sequence, and sending the transformed second target data sequence; Wherein, the time window of the second Fourier transform is equal to the time length occupied by the second target data sequence, and the start point and end point of the time of the second Fourier transform correspond to the start point and end point of the time of the second target data sequence; The number of points of the second inverse Fourier transform is greater than the number of points of the second Fourier transform, and the number of data of the transformed second target data sequence is greater than the number of data of the second target data sequence; The time length occupied by the second target data sequence is equal to the OFDM symbol length occupied by the second target data sequence, and the time length occupied by the transformed second target data sequence is equal to the OFDM symbol length occupied by the transformed second target data sequence.

21. A wireless communication device, characterized in that, Comprising: At least one processor; At least one memory for storing at least one program; When at least one of the at least one program is executed by at least one of the at least one processor, the method according to any one of claims 1 to 20 is implemented.

22. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores computer-executable instructions, and the computer-executable instructions: are used to execute the method according to any one of claims 1 to 20.

23. A computer program product, comprising a computer program or computer instructions, characterized in that, The computer program or the computer instructions are stored in a computer-readable storage medium, and a processor of a computer device reads the computer program or the computer instructions from the computer-readable storage medium, and the processor executes the computer program or the computer instructions, so that the computer device executes: the method according to any one of claims 1 to 20.

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