Signal transmission method, communication apparatus, and storage medium

Abstract

Provided in the present disclosure are a signal transmission method, a communication apparatus, and a storage medium. The signal transmission method is applied to a first node, and comprises: receiving a first signal; and sending a second signal to a second node on the basis of a frame structure and the first signal.

Description

Signal transmission method, communication device and storage medium

[0001] This application claims priority to Chinese patent application No. 202410144524.1, filed on January 31, 2024, the entire contents of which are incorporated herein by reference. Technical Field

[0002] The present disclosure relates to the field of communications, and in particular to a signal transmission method, a communication device, and a storage medium. Background Art

[0003] In communication systems, cellular passive IoT is considered a promising technology solution for achieving the interconnection of everything. It leverages emerging technologies such as reflective scattering communication and energy harvesting to achieve low-power, low-cost, long-distance, and large-scale IoT connectivity. In cellular passive IoT, communication nodes (e.g., terminals) do not generate their own signals or power. Instead, they receive signals from other nodes and forward them to the target communication node (e.g., base station) using reflective scattering technology.

[0004] Summary of the Invention

[0005] In a first aspect, a signal transmission method is provided, which is applied to a first node. The signal transmission method includes: receiving a first signal; and sending a second signal to a second node based on a frame structure and the first signal.

[0006] In a second aspect, a signal transmission method is provided, which is applied to a second node. The signal transmission method includes: receiving a second signal sent by a first node based on a frame structure and a first signal.

[0007] In a third aspect, a signal transmission device is provided, comprising: a receiving module configured to receive a first signal; and a sending module configured to send a second signal to a second node based on a frame structure and the first signal. The second signal is a reflection signal of the first signal.

[0008] In a fourth aspect, a signal transmission device is provided, comprising: a receiving module configured to receive a second signal sent by a first node based on a frame structure and a first signal, wherein the second signal is a reflection signal of the first signal.

[0009] In a fifth aspect, a communication device is provided, comprising: a memory and a processor. The memory is coupled to the processor; the memory is used to store a computer program; and the processor implements the signal transmission method of the first or second aspect when executing the computer program.

[0010] In a sixth aspect, a computer-readable storage medium is provided, on which computer program instructions are stored. When the computer program instructions are executed by a processor, the signal transmission method of the first aspect or the second aspect mentioned above is implemented.

[0011] In a seventh aspect, a computer program product is provided, which includes computer program instructions, and when the computer program instructions are executed by a processor, the signal transmission method of the first aspect or the second aspect is implemented.

[0012] The descriptions of aspects 3 to 7 and their various implementations in this disclosure can refer to the detailed descriptions of aspects 1 and 2 and their various implementations. Furthermore, the beneficial effects of aspects 3 to 7 and their various implementations can refer to the analysis of the beneficial effects of aspects 1 and 2 and their various implementations, and will not be repeated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] To more clearly illustrate the technical solutions of the present disclosure, the following briefly describes the drawings required for use in some embodiments of the present disclosure. Obviously, the drawings described below are merely illustrations of some embodiments of the present disclosure. Those skilled in the art can also derive other drawings based on these drawings.

[0014] FIG1 is a schematic diagram of a communication system according to some embodiments of the present disclosure.

[0015] FIG2 is a flowchart of a signal transmission method according to some embodiments of the present disclosure.

[0016] FIG3 is a schematic diagram of the structure of a silent domain according to some embodiments of the present disclosure.

[0017] FIG4 is a schematic structural diagram of another silent domain according to some embodiments of the present disclosure.

[0018] FIG5 is a schematic structural diagram of another silent domain according to some embodiments of the present disclosure.

[0019] FIG6 is a schematic structural diagram of another silent zone according to some embodiments of the present disclosure.

[0020] FIG7 is a schematic structural diagram of another silent zone according to some embodiments of the present disclosure.

[0021] FIG8 is a schematic diagram of the structure of a synchronization domain according to some embodiments of the present disclosure.

[0022] FIG9 is a schematic structural diagram of another synchronization domain according to some embodiments of the present disclosure.

[0023] FIG10 is a schematic structural diagram of another synchronization domain according to some embodiments of the present disclosure.

[0024] FIG11 is a schematic structural diagram of another synchronization domain according to some embodiments of the present disclosure.

[0025] FIG12 is a schematic structural diagram of another synchronization domain according to some embodiments of the present disclosure.

[0026] FIG13 is a schematic structural diagram of a control domain according to some embodiments of the present disclosure.

[0027] FIG14 is a schematic diagram of the structure of a data domain according to some embodiments of the present disclosure.

[0028] FIG15 is a schematic structural diagram of an end domain according to some embodiments of the present disclosure.

[0029] FIG16 is a schematic structural diagram of another termination domain according to some embodiments of the present disclosure.

[0030] FIG17 is a flowchart of another signal transmission method according to some embodiments of the present disclosure.

[0031] FIG18 is a schematic structural diagram of a signal transmission device according to some embodiments of the present disclosure.

[0032] FIG19 is a schematic structural diagram of another signal transmission device according to some embodiments of the present disclosure.

[0033] FIG20 is a schematic structural diagram of a communication device according to some embodiments of the present disclosure. DETAILED DESCRIPTION

[0034] The following will clearly and completely describe the technical solutions of this disclosure in conjunction with the accompanying drawings. Obviously, the embodiments described are only some of the embodiments of this disclosure, not all of them. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of this disclosure without inventive effort are within the scope of protection of this disclosure.

[0035] It should be noted that, in this disclosure, words such as "exemplary" or "for example" are used to describe examples, illustrations, or explanations. Any embodiment or design described in this disclosure using "exemplary" or "for example" should not be interpreted as being more preferred or advantageous over other embodiments or designs. Rather, the use of words such as "exemplary" or "for example" is intended to present the relevant concepts in a concrete manner.

[0036] In the following, the terms "first," "second," etc. are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of the technical features indicated. Therefore, a feature described as "first," "second," etc. may explicitly or implicitly include one or more of the features.

[0037] In the description of this disclosure, unless otherwise specified, " / " means "or." For example, A / B can mean A or B. "And / or" in this document simply describes an association relationship between related objects, indicating that three relationships can exist. For example, "A and / or B" can mean: A exists alone, A and B exists simultaneously, and B exists alone. Furthermore, "at least one" means one or more, and "a plurality" means two or more.

[0038] The methods provided in the embodiments of the present disclosure can be applied to various communication systems. For example, the various communication systems may include fifth-generation (5G) communication systems, wireless local area network (WLAN) systems, third-generation partnership project (3GPP)-related communication systems, future-evolved communication systems (e.g., sixth-generation (6G) communication systems), or systems integrating multiple systems, and the embodiments of the present disclosure are not limited thereto.

[0039] In the embodiments of the present disclosure, the network architecture of the communication network (including but not limited to 3G, 4G, 5G and future mobile communication networks) may include at least a first node and a second node. It should be understood that in this example, in the downlink, the first node may be a network side device (for example, including but not limited to a base station), and the second node may be a terminal side device (for example, including but not limited to a terminal). Of course, in the uplink, the first node may also be a terminal side device, and the second node may also be a network side device. In a device-to-device communication between two communication nodes, the first node and the second node may both be a base station or a terminal.

[0040] For example, taking the first node as a terminal and the second node as a base station, FIG1 shows a communication system according to an embodiment of the present disclosure. The communication system includes a terminal 110 and a base station 120. The terminal 110 is in communication with the base station 120.

[0041] In some embodiments, there may be one or more base stations 120 and one or more terminals 110. The embodiments of the present disclosure do not limit the number of base stations and terminals.

[0042] Terminal 110 is configured to receive a first signal (e.g., a downlink signal or an excitation signal) sent by base station 120 or another communication node, generate a second signal based on the received first signal and a frame structure, and then send the second signal to base station 120. The second signal may be a reflected signal generated by terminal 110 based on the first signal.

[0043] In some embodiments, the frame structure includes at least one of the following: a silence field, a synchronization field, a control field, a data field, a check field, and an end field. When transmitting the second signal, terminal 110 may configure different information in each field of the frame structure to enable base station 120 to better demodulate and process the second signal after receiving it.

[0044] Exemplarily, the terminal can be a mobile phone, a tablet computer, a computer with wireless transceiver function, a virtual reality (VR) terminal, an augmented reality (AR) terminal, a wireless terminal in industrial control, a wireless terminal in self-driving, a wireless terminal in remote medical, a wireless terminal in smart grid, a wireless terminal in transportation safety, a wireless terminal in smart city, a wireless terminal in smart home, etc. The embodiments of the present disclosure do not limit the application scenarios. The terminal may sometimes also be referred to as a user, user equipment (UE), an access terminal, a UE unit, a UE station, a mobile station, a mobile station, a remote station, a remote terminal, a mobile device, a UE terminal, a wireless communication device, a UE agent or a UE device, etc., and the embodiments of the present disclosure do not limit this.

[0045] The base station 120 is configured to receive the second signal sent by the terminal 110 and implement time domain synchronization, demodulate the second signal, etc. based on the frame structure of the second signal.

[0046] Exemplarily, the silent region in the frame structure is used to transmit a preset signal; alternatively, the silent region in the frame structure does not support signal transmission. When the silent region is used to transmit a preset signal, the preset signal can assist base station 120 in demodulating the second signal. When the silent region does not support signal transmission, base station 120 can achieve frame synchronization, time slot synchronization, symbol synchronization, etc. between the second signal and the first signal within the silent region.

[0047] In some embodiments, the base station 120 may further send a first signal (eg, an excitation signal) to the terminal 110. When the first signal is the excitation signal, the second signal may be a scattered signal of the excitation signal.

[0048] Exemplarily, the base station may be a base station or an evolved base station (eNB or eNodeB) in long term evolution (LTE), long term evolution advanced (LTEA), a base station device in a 5G network, or a base station in a future communication system. The base station may include various network-side devices such as various macro base stations, micro base stations, home base stations, wireless remote devices, reconfigurable intelligent surfaces (RISs), routers, relays, and wireless fidelity (WIFI) devices.

[0049] It should be noted that the above scenarios are intended to more clearly illustrate the technical solutions of the embodiments of the present disclosure and do not constitute a limitation on the technical solutions provided by the embodiments of the present disclosure. Those skilled in the art will appreciate that, as system architecture evolves and new business scenarios emerge, the technical solutions provided by the embodiments of the present disclosure will also be applicable to similar technical problems.

[0050] In communication systems, cellular passive IoT is considered a promising technology solution for achieving the interconnection of everything. Cellular passive IoT utilizes emerging technologies such as backscatter communication and energy harvesting to achieve low-power, low-cost, long-distance, and large-scale IoT connectivity. Backscatter communication involves a reflector transmitting data to a receiver by reflecting an excitation signal sent by an exciter. In cellular passive IoT, communication nodes (e.g., terminals) do not need to generate their own signals or power; instead, they receive signals from other nodes and forward them to the target communication node (e.g., base station) using backscatter technology. This approach can significantly reduce device energy consumption and costs and support large-scale device connectivity.

[0051] However, due to issues such as time delay and propagation path differences between communication nodes, signal asynchrony can occur (e.g., causing phase shifts in the signals). This complicates signal demodulation and decoding, reducing communication quality between nodes. Therefore, ensuring signal synchronization between communication nodes (e.g., between a terminal and a base station) is crucial.

[0052] To address the above issues, see Figure 2, which is a flow chart of a signal transmission method according to an embodiment of the present disclosure. As shown in Figure 2, the signal transmission method provided by the embodiment of the present disclosure is applied to a first node and includes the following steps S101 and S102.

[0053] In S101 , a first signal is received.

[0054] In some embodiments, the first node may receive the first signal sent by the second node, or the first node may receive the first signal sent by other nodes.

[0055] In some embodiments, the first signal is a downlink signal and / or an excitation signal. When the first signal is an excitation signal, it can be used to trigger or initiate an operation. For example, it can trigger the first node to start listening for and receiving the excitation signal and generate a second signal (i.e., a scattered signal of the excitation signal).

[0056] It should be noted that the form of the first signal is only an example given in the embodiment of the present disclosure. During implementation, the first signal may vary based on different scenarios and actual needs, and the embodiment of the present disclosure does not limit this.

[0057] In S102, a second signal is sent to a second node based on the frame structure and the first signal.

[0058] In some embodiments, after receiving the first signal, the first node may process the first signal based on appropriate processing and modulation techniques and generate a second signal based on the frame structure. For example, when the first signal is an excitation signal, the second signal may be a scattered signal of the excitation signal.

[0059] In some embodiments, the second signal is used to transmit at least control information.

[0060] In some embodiments, the control information includes at least one of the following: the data length transmitted by the second signal; the data packet index transmitted by the second signal; the number of sub-blocks corresponding to the data domain; the power amplifier level corresponding to the first node; the power amplifier margin corresponding to the first node; the symbol length corresponding to the data domain; the modulation method corresponding to the data domain; the coding method corresponding to the data domain; the data type transmitted by the second signal; the data bit rate transmitted by the second signal; the time domain resources occupied by the data domain; and the coverage capability of the first node.

[0061] It can be understood that based on the signal transmission method provided by the embodiment of the present disclosure, the first node (e.g., terminal) receives the first signal and sends the second signal to the second node (e.g., base station) based on the frame structure and the first signal. This allows the second node to demodulate the second signal based on the same frame structure after receiving the second signal, thereby ensuring the accuracy of the demodulation of the second signal. At the same time, the first node can add relevant information about the second signal to the frame structure, so that the second node can demodulate and extract the second signal more accurately based on the relevant information, thereby ensuring the integrity and accuracy of data transmission.

[0062] In addition, since the first node can flexibly adjust the content in the frame structure (for example, add certain indication information in the frame structure), it can assist the second node in achieving signal synchronization, thereby ensuring the communication quality between the first node and the second node.

[0063] In some embodiments, the frame structure includes at least one of the following: a silence field, a synchronization field, a control field, a data field, a check field, and an end field. The following describes each part of the frame structure:

[0064] First, the silent region in the frame structure is introduced.

[0065] In some embodiments, the silent region is used for at least one of the following: achieving time domain synchronization, supporting the first node to acquire channel information, and assisting the second node to demodulate the second signal.

[0066] In some embodiments, the silent region is used to transmit a preset signal. For example, when the silent region is used to transmit a preset signal, the first node may transmit a specific preset signal within the silent region. The preset signal may include information about the data format, encoding method, or other relevant parameters within the frame structure. Upon receiving the preset signal within the second signal, the second node may perform a demodulation operation based on the information in the preset signal to correctly parse and restore the data.

[0067] It can be understood that by sending a preset signal in the silent domain, the first node can enable the second node to parse the frame structure based on the preset signal in the silent domain to assist the second node in demodulating the frame structure, thereby improving the accuracy and reliability of the signal and thus improving the performance of the communication system.

[0068] In some embodiments, the first node may not transmit any signal in the silent domain.

[0069] As an example, when the second signal is an uplink signal (for example, when the first node is a terminal and the second node is a base station), if there is no signal transmission in the silent domain, then after the second node receives the second signal, it can achieve time domain synchronization between the second signal and the first signal based on the silent domain. For example, the second node determines the position of the frame structure, the time slot position of the frame structure, and the starting point of the symbol in the frame structure based on the silent domain in the second signal to achieve frame synchronization, time slot synchronization, symbol synchronization, etc. between the second signal and the first signal.

[0070] It can be understood that in the method provided in the embodiment of the present disclosure, the second node synchronizes the second signal with the first signal based on the silent domain, which can ensure that the second node correctly parses and processes the second signal to improve the reliability and performance of the communication system.

[0071] As another example, when there is no signal transmission in the silent domain, the first node may also perform channel measurement in the silent domain to obtain channel information such as channel attenuation, delay, and multipath effect, and further determine channel characteristics.

[0072] It is understandable that the first node can make corresponding adjustments and optimizations for subsequent signal transmissions by understanding the attenuation, delay, multipath effect, etc. of the channel, so as to improve the performance and reliability of the communication system.

[0073] In some embodiments, the silent domain includes at least one of the following: a first silent sub-domain, a second silent sub-domain, and a third silent sub-domain.

[0074] As an example, as shown in Figure 3, the silent field includes a first silent subfield, and the first silent subfield is located at the beginning of the frame structure. In this case, as shown in Figure 3, the frame structure includes: a first silent subfield, a synchronization field, a data field, a check field, and an end field. If the first silent subfield does not support signal transmission, the second node can perform frame synchronization between the first signal and the second signal based on the first silent subfield.

[0075] As another example, the silence field includes a second silence sub-field, and the second silence sub-field appears with a period of M first time domain units in the frame structure; or the second silence sub-field appears with a period of M first time domain units in the data field. The first time domain unit is one of the following: a symbol, a codeword, a millisecond, or a second, and M is a positive integer.

[0076] For example, as shown in Figure 4, the second silent sub-field appears in the frame structure with a period of M symbols, and each occurrence lasts for K milliseconds. K is a fixed value or is determined based on signaling configuration. For example, if M is 20 and K is 1 millisecond, the second sub-silent field appears in the frame structure with a period of 20 symbols, and in each period, the duration of the second sub-silent field is 1 millisecond. If the second silent sub-field does not support the transmission of signals, the second node can perform symbol synchronization between the first signal and the second signal based on the second silent sub-field.

[0077] In some embodiments, the value of M is determined based on at least one of the following: the length of the second silent sub-field, the symbol length of the first signal, the symbol length of the second signal, the subcarrier spacing of the first signal, and a first parameter. The first parameter is a fixed value or is determined based on signaling configuration.

[0078] For example, the following Table 1 shows some examples of values ​​for M. As shown in Table 1, if the symbol length of the second signal / the symbol length of the first signal is 1 / N, the subcarrier spacing of the first signal is L kHz, and the first parameter is 7, then M can be expressed as: M=7*N*(L kHz / 15kHz), where N is a positive integer.

[0079] Table 1

[0080] For example, if the length of the second silent sub-field is 0.52 us, N is 2, and L is 15, then M = 7*2*(15 / 15) = 14. In this case, the second silent sub-field appears with a period of 14 symbols in the frame structure, and in each period, the length of the second silent sub-field is 0.52 us.

[0081] As another example, as shown in Figure 5, the silent field includes a first silent sub-field and a second silent sub-field, and the first silent sub-field is located at the beginning of the frame structure, and the second silent sub-field appears in the frame structure with a period of M symbols. In this case, the second node can perform time domain synchronization based on the first silent sub-field and the second silent sub-field, or demodulate the frame structure based on the first silent sub-field and the second silent sub-field. Alternatively, the first node can also obtain channel information based on the first silent sub-field and the second silent sub-field.

[0082] As another example, as shown in Figure 6, the silent field includes a third silent sub-field, and the third silent sub-field is located after the synchronization field in the frame structure. In this case, if the third silent sub-field does not support the transmission of signals, the second node can perform time domain synchronization on the data field of the frame structure based on the third silent sub-field.

[0083] As another example, as shown in Figure 7, the silent field includes a second silent sub-field and a third silent sub-field. The second silent sub-field appears in the frame structure with a period of M symbols, excluding the synchronization field. The third silent sub-field is located after the synchronization field. In this case, if the third silent sub-field does not support the transmission signal, the second node can perform time domain synchronization on the data field of the frame structure based on the third silent sub-field. In addition, the second node can also use the second silent sub-field to perform symbol synchronization between the first signal and the second signal.

[0084] It should be noted that the above examples of the first, second, and third silent sub-fields in the silent domain are merely examples provided in the embodiments of the present disclosure. In actual implementation, the silent domain may include more or fewer silent sub-fields than those described above, depending on the scenario and actual needs. Furthermore, the location and occurrence period of each silent sub-field in the silent domain may also vary depending on the scenario and actual needs, and are not limited in the embodiments of the present disclosure.

[0085] It can be understood that in the method provided in the embodiment of the present disclosure, the first node can flexibly determine the silent sub-domain in the silent domain, so as to use different silent sub-domains to achieve time domain synchronization, obtain channel information, etc. based on different actual needs, thereby improving the reliability and performance of the communication system.

[0086] Next, the synchronization field in the frame structure is introduced.

[0087] In some embodiments, the synchronization field is used to indicate at least one of the following: the code element length of the frame structure, the code element rate of the frame structure, the modulation mode corresponding to the second signal, the device type of the first node, the starting position of the control field, the code element length of the control field, the code element rate of the control field, the starting position of the data field, the code element length of the data field, the code element rate of the data field, and the signal type transmitted by the frame structure.

[0088] In some embodiments, the synchronization domain includes at least one of the following: a first synchronization subdomain, a second synchronization subdomain, and a third synchronization subdomain.

[0089] The first synchronization subfield is used to indicate at least one of the following: the symbol length of the frame structure, the rate of the frame structure, the symbol length of the second synchronization subfield, the symbol rate of the second synchronization subfield, the modulation method corresponding to the second signal, and the device type of the first node. Exemplarily, when the first node sends the second signal based on the frame structure, the first synchronization subfield may include the following information: the symbol length of the frame structure, the symbol rate of the frame structure, the symbol length of the second synchronization subfield, the symbol rate of the second synchronization subfield, the modulation method corresponding to the second signal, and the device type of the first node (e.g., terminal or base station).

[0090] The second synchronization subfield is used to indicate at least one of the following: the starting position of the control field, the code element length of the control field, the code element rate of the control field, the starting position of the data field, the code element length of the data field, and the code element rate of the data field. As an example, the second synchronization subfield can be located before the control field and include relevant information about the control field. After the second node receives the second signal, it can determine the starting position of the control field, the code element length of the control field, the code element rate of the control field, and other information based on the relevant information in the second synchronization subfield. As another example, the second synchronization subfield can be located before the data field and include relevant information about the data field. After the second node receives the second signal, it can determine the starting position of the data field, the code element length of the data field, the code element rate of the data field, and other information based on the relevant information in the second synchronization subfield.

[0091] The third synchronization subfield is used to indicate at least one of the following: the symbol length of the control field, the symbol rate of the control field, the symbol length of the data field, and the symbol rate of the data field. For example, the third synchronization subfield may be located before the control field and include relevant information about the control field. Upon receiving the second signal, the second node may determine information such as the symbol length and symbol rate of the control field based on the relevant information in the third synchronization subfield.

[0092] In some embodiments, the symbol length or symbol rate of the first synchronization subfield is the same as the symbol length or symbol rate of the second synchronization subfield.

[0093] In some embodiments, the symbol length or the symbol rate of the first synchronization subfield is different from the symbol length or the symbol rate of the third synchronization subfield.

[0094] It is understood that in some embodiments, the symbol length or rate of the first synchronization subfield can be configured to be the same as the symbol length or symbol rate of the second synchronization subfield to simplify the design of the frame structure and improve signal synchronization. However, in other embodiments, due to large variations in data transmission rates, if the symbol length or symbol rate of the first synchronization subfield is the same as the symbol length or symbol rate of the second synchronization subfield, it may affect the signal synchronization between the first node and the second node. Therefore, in this case, the symbol length or symbol rate of the first synchronization subfield can be configured to be different from the symbol length or symbol rate of the third synchronization subfield to increase the flexibility of the frame structure, enable the frame structure to better cope with complex communication environments, and improve communication quality.

[0095] As an example, as shown in Figure 8, the synchronization domain includes a first synchronization subdomain and a second synchronization subdomain. After receiving the second signal, the second node can determine relevant information of the control domain and the data domain based on information in the first synchronization subdomain and information in the second synchronization subdomain.

[0096] In some embodiments, the synchronization domain further includes a first interval. The first interval does not support transmission of signals.

[0097] In some embodiments, the first interval is located between synchronization subfields. For example, as shown in FIG9 , when the synchronization domain includes a first synchronization subfield and a second synchronization subfield, the synchronization domain also includes a first interval located between the first synchronization subfield and the second synchronization subfield. The first interval does not support signal transmission. Upon receiving the second signal, the second node may determine relevant information about the control domain and the data domain based on information in the first synchronization subfield and information in the second synchronization subfield.

[0098] It should be noted that the length of the first interval is a pre-set fixed length. Based on different actual scenarios and actual needs, the length of the first interval may vary, and the embodiments of the present disclosure do not limit this.

[0099] As another example, as shown in Figure 10, the synchronization field includes a second synchronization subfield and a third synchronization subfield. After receiving the second signal, the second node can determine relevant information of the control field and the data field based on information in the second synchronization subfield and information in the third synchronization subfield.

[0100] In some embodiments, as shown in FIG11 , when the synchronization domain includes a second synchronization subdomain and a third synchronization subdomain, the synchronization domain also includes a first interval located between the second synchronization subdomain and the third synchronization subdomain. The first interval does not support signal transmission. When the second node receives the second signal, it can determine relevant information about the control domain and the data domain based on information in the second synchronization subdomain and information in the third synchronization subdomain.

[0101] As another example, as shown in Figure 12, the synchronization domain includes a first synchronization sub-domain, a second synchronization sub-domain, a third synchronization sub-domain, a first interval between the first synchronization sub-domain and the second synchronization sub-domain, and a first interval between the second synchronization sub-domain and the third synchronization sub-domain. After receiving the second signal, the second node can determine relevant information about the control domain and the data domain based on information in the first synchronization sub-domain, information in the second synchronization sub-domain, and information in the third synchronization sub-domain.

[0102] In some embodiments, the first synchronization subfield includes a first sequence after the first encoding; the second synchronization subfield includes a second sequence or a second sequence after the second encoding; and the third synchronization subfield includes a third sequence after the third encoding.

[0103] In some embodiments, the first coding, the second coding or the third coding includes at least one of the following: Bi-Phase Space Coding (FMO) coding, Manchester coding, Miller coding, polar coding, Reed-Muller coding, and convolutional coding.

[0104] It should be noted that, based on different scenarios and actual needs, the first code, the second code and the third code can be the same code or different codes, and the embodiments of the present disclosure are not limited to this.

[0105] In some embodiments, the first sequence is determined based on at least the cell in which the first node is located. As an example, the first sequence used in the first synchronization subfields of all first nodes in each cell is the same. As another example, the first sequence used in the first synchronization subfields of all communication nodes in the cell is the same.

[0106] In some embodiments, the second sequence is determined based on at least one of the following: the cell where the first node is located, the type of frame structure, the device type of the first node, a medium access control-control element (MAC CE), a radio resource control (RRC) signaling, etc.

[0107] As an example, the second synchronization sub-fields of all second nodes in each cell use the same second sequence.

[0108] As another example, the second sequence used in the second synchronization sub-domains of the communication nodes in all cells is the same.

[0109] As another example, each device type corresponds to a second sequence in the second synchronization subfield, the device type of the first node corresponds to a specific second sequence, and the second sequence is determined based on the device type of the first node.

[0110] As another example, the second sequence is determined based on signaling configuration, that is, second sequences in P second synchronization sub-fields are preset, and the first node determines the content of the second sequence based on the signaling configuration, where P is a positive integer.

[0111] As another example, the second sequence is determined based on the type of the frame structure, that is, different frame structures correspond to different second sequences.

[0112] In some embodiments, the third sequence is determined based on at least one of the following: the cell in which the first node is located, the device type of the first node, a method for determining the first sequence, a method for determining the second sequence, and a transmission method of the second signal. Exemplarily, each device type corresponds to a third sequence in the third synchronization subfield, the device type of the first node corresponds to a specific third sequence, and the third sequence is determined based on the device type of the first node.

[0113] In some embodiments, the third sequence is determined in the same manner as the first sequence. That is, if the first sequence is determined based on the cell where the first node is located, then the third sequence is also determined based on the cell where the first node is located.

[0114] In some embodiments, the third sequence is determined in the same manner as the second sequence. That is, if the second sequence is determined based on the cell where the first node is located, then the third sequence is also determined based on the cell where the first node is located.

[0115] It can be understood that in the method provided in the embodiment of the present disclosure, the forms of the first sequence, the second sequence and the third sequence can be flexibly determined, which improves the adaptability and scalability of the frame structure, so that the frame structure can be optimized based on different communication requirements and communication scenarios to improve communication performance.

[0116] In some embodiments, the first sequence or the third sequence is a pre-set M sequence, where M is a positive integer greater than or equal to 1. Exemplarily, the M sequences are of at least one of the following types: an all-0 sequence, an all-1 sequence, an all-j sequence, or an all--j sequence.

[0117] In some embodiments, the second sequence is one of the following: a binary sequence searched by a computer, a Golay complementary sequence. Exemplarily, when the length of the second sequence is 4 bits, the second sequence is at least one of the following sequence sets:

[0118] For example, the second sequence may be 0001 or 0010.

[0119] Exemplarily, when the length of the second sequence is 5 bits, the second sequence is at least one of the following sequence sets:

[0120] For example, the second sequence may be 00010 or 11101.

[0121] Exemplarily, when the length of the second sequence is 6 bits, the second sequence is at least one of the following sequence sets:

[0122] For example, the second sequence may be 000100 or 001011.

[0123] Exemplarily, when the length of the second sequence is 7 bits, the second sequence is at least one of the following sequence sets:

[0124] For example, the second sequence may be 0001101 or 1011000.

[0125] Exemplarily, when the length of the second sequence is 8 bits, the second sequence is at least one of the following sequence sets:

[0126] For example, the second sequence may be 00100001 or 11011110.

[0127] Exemplarily, when the length of the second sequence is 9 bits, the second sequence is at least one of the following sequence sets:

[0128] For example, the second sequence may be 000110010 or 111001101.

[0129] Exemplarily, when the length of the second sequence is 10 bits, the second sequence is at least one of the following sequence sets:

[0130] For example, the second sequence may be 0110000010 or 1001111101.

[0131] Exemplarily, when the length of the second sequence is 11 bits, the second sequence is at least one of the following sequence sets:

[0132] For example, the second sequence may be 00011101101 or 10110111000.

[0133] Exemplarily, when the length of the second sequence is 12 bits, the second sequence is at least one of the following sequence sets:

[0134] For example, the second sequence may be 000001100101 or 100110101111.

[0135] Exemplarily, when the length of the second sequence is 13 bits, the second sequence is at least one of the following sequence sets:

[0136] For example, the second sequence may be 0000011001010 or 1111100110101.

[0137] Exemplarily, when the length of the second sequence is 14 bits, the second sequence is at least one of the following sequence sets:

[0138] For example, the second sequence may be 00001010110011 or 01011111100110.

[0139] Exemplarily, when the length of the second sequence is 15 bits, the second sequence is at least one of the following sequence sets:

[0140] For example, the second sequence may be 000111011101101 or 010010001000111.

[0141] Exemplarily, when the length of the second sequence is 16 bits, the second sequence is at least one of the following sequence sets:

[0142] For example, the second sequence may be 0011000001010110 or 0011111101011001.

[0143] In some embodiments, if the second encoding is Manchester encoding, the second sequence can also be expressed in the following form.

[0144] Exemplarily, when the length of the second sequence is 4 bits, the second sequence is at least one of the following sequence sets:

[0145] For example, the second sequence may be 0010.

[0146] Exemplarily, when the length of the second sequence is 5 bits, the second sequence is at least one of the following sequence sets:

[0147] For example, the second sequence may be 00010 or 01000.

[0148] Exemplarily, when the length of the second sequence is 6 bits, the second sequence is at least one of the following sequence sets:

[0149] For example, the second sequence may be 010001.

[0150] Exemplarily, when the length of the second sequence is 7 bits, the second sequence is at least one of the following sequence sets:

[0151] For example, the second sequence may be 0001101 or 0100111.

[0152] Exemplarily, when the length of the second sequence is 8 bits, the second sequence is at least one of the following sequence sets:

[0153] For example, the second sequence may be 00110101.

[0154] Exemplarily, when the length of the second sequence is 9 bits, the second sequence is at least one of the following sequence sets:

[0155] For example, the second sequence may be 000101001.

[0156] Exemplarily, when the length of the second sequence is 10 bits, the second sequence is at least one of the following sequence sets:

[0157] For example, the second sequence may be 1010000110.

[0158] Exemplarily, when the length of the second sequence is 11 bits, the second sequence is at least one of the following sequence sets:

[0159] For example, the second sequence may be 00011101101 or 01001000111.

[0160] Exemplarily, when the length of the second sequence is 12 bits, the second sequence is at least one of the following sequence sets:

[0161] For example, the second sequence may be 000010100110 or 000011001010.

[0162] Exemplarily, when the length of the second sequence is 13 bits, the second sequence is at least one of the following sequence sets:

[0163] For example, the second sequence may be 0101001100000.

[0164] Exemplarily, when the length of the second sequence is 14 bits, the second sequence is at least one of the following sequence sets:

[0165] For example, the second sequence may be 01100111110101.

[0166] Exemplarily, when the length of the second sequence is 15 bits, the second sequence is at least one of the following sequence sets:

[0167] For example, the second sequence may be 000001100110101 or 010010001000111.

[0168] Exemplarily, when the length of the second sequence is 16 bits, the second sequence is at least one of the following sequence sets:

[0169] For example, the second sequence may be 0010110100010001.

[0170] In some embodiments, if the second code is FM0, the second sequence can also be expressed in the following form.

[0171] Exemplarily, when the length of the second sequence is 4 bits, the second sequence is at least one of the following sequence sets:

[0172] For example, the second sequence may be 0011.

[0173] Exemplarily, when the length of the second sequence is 5 bits, the second sequence is at least one of the following sequence sets:

[0174] For example, the second sequence may be 11001.

[0175] Exemplarily, when the length of the second sequence is 6 bits, the second sequence is at least one of the following sequence sets:

[0176] For example, the second sequence may be 011001.

[0177] Exemplarily, when the length of the second sequence is 7 bits, the second sequence is at least one of the following sequence sets:

[0178] For example, the second sequence may be 0010111.

[0179] Exemplarily, when the length of the second sequence is 8 bits, the second sequence is at least one of the following sequence sets:

[0180] For example, the second sequence may be 00010111.

[0181] Exemplarily, when the length of the second sequence is 9 bits, the second sequence is at least one of the following sequence sets:

[0182] For example, the second sequence may be 101011111.

[0183] Exemplarily, when the length of the second sequence is 10 bits, the second sequence is at least one of the following sequence sets:

[0184] For example, the second sequence may be 0010011011.

[0185] Exemplarily, when the length of the second sequence is 11 bits, the second sequence is at least one of the following sequence sets:

[0186] For example, the second sequence may be 10010011011.

[0187] Exemplarily, when the length of the second sequence is 12 bits, the second sequence is at least one of the following sequence sets:

[0188] For example, the second sequence may be 000010101111.

[0189] Exemplarily, when the length of the second sequence is 13 bits, the second sequence is at least one of the following sequence sets:

[0190] For example, the second sequence may be 1111101010000.

[0191] Exemplarily, when the length of the second sequence is 14 bits, the second sequence is at least one of the following sequence sets:

[0192] For example, the second sequence may be 01111010100001.

[0193] When the length of the second sequence is 15 bits, the second sequence is at least one of the following sequence sets:

[0194] For example, the second sequence may be 000010101011111.

[0195] Exemplarily, when the length of the second sequence is 16 bits, the second sequence is at least one of the following sequence sets:

[0196] For example, the second sequence may be 0000010101011111.

[0197] It is understood that in the methods provided by the embodiments of the present disclosure, the synchronization domain can assist the second node in accurately parsing the content of the second signal, ensuring the integrity of the second node's extraction and parsing of the second signal. Furthermore, the second node can also select an appropriate demodulation method to process the second signal based on information such as the signal modulation method indicated in the synchronization domain and the device type of the first node, thereby improving the accuracy of the second node's parsing of the second signal and thereby assisting the second node in achieving signal synchronization.

[0198] Next, the control field and data field in the frame structure are introduced.

[0199] In some embodiments, the control information is carried in the control field and / or the data field.

[0200] As an example, as shown in Figure 13, the frame structure includes a first silent sub-field, a synchronization field, a control field, a data field, a check field, and an end field. Control information is transmitted via the control field. As another example, as shown in Figure 14, the frame structure includes a first silent sub-field, a synchronization field, a control field, a data field, a check field, and an end field. Control information is transmitted via the data field.

[0201] In some embodiments, the control information includes at least one of the following: the data length of the second signal transmission, the data packet index of the second signal transmission, the number of sub-blocks corresponding to the data domain, the power amplifier level corresponding to the first node, the power amplifier margin corresponding to the first node, the symbol length corresponding to the data domain, the modulation method corresponding to the data domain, the encoding method corresponding to the data domain, the data type of the second signal transmission, the data bit rate of the second signal transmission, the time domain resources occupied by the data domain, and the coverage capability of the first node.

[0202] It can be understood that in the method provided by the embodiment of the present disclosure, by adding control information in the control field of the frame structure, the second node can perform resource allocation and scheduling based on the control information after receiving the second signal, and select an appropriate processing method to ensure the correct analysis and processing of the second signal, thereby improving the performance and efficiency of the communication system.

[0203] In some embodiments, the signaling indicating the data length of the second signal transmission has a one-to-one correspondence with the data length. If the control information is transmitted via the control field and the control information includes signaling indicating the data length of the second signal transmission, the second node may determine the corresponding data length based on the signaling indicating the data length of the second signal transmission. For example, the correspondence between the signaling indicating the data length and the data length is shown in Table 2 below.

[0204] Table 2

[0205] That is, as can be seen from Table 2 above, if the signaling indicating the data length of the second signal transmission is 11, the corresponding data length is the first length. If the signaling indicating the data length of the second signal transmission is 10, the corresponding data length is the second length. The first length, second length, third length, and fourth length are pre-set lengths.

[0206] Exemplarily, if the length of data to be transmitted by the first node is a first length, then when transmitting the second signal based on the frame structure, the first node may transmit signaling 11 in the control field indicating the data length transmitted by the second signal, thereby indicating that the corresponding data length is the first length. When the second node receives the second signal based on the frame structure, based on signaling 11 in the control field indicating the data length transmitted by the second signal, it may determine that the data length in the data field is the first length, and receive data based on the first length. Exemplarily, the first length may be 100.

[0207] In some embodiments, the signaling indicating the packet index for the second signal transmission has a one-to-one correspondence with the packet index. If control information is transmitted via the control field and includes signaling indicating the packet index, the second node may determine the corresponding packet index based on the signaling indicating the packet index. For example, the correspondence between the signaling indicating the packet index and the packet index is shown in Table 3 below.

[0208] Table 3

[0209] That is, it can be seen from the above Table 3 that if the signaling indicating the data packet index is 11, the data packet index is 4.

[0210] For example, if the data packet index sent by the first node is 1 (i.e., the first data packet is sent), the first node may send signaling 00 indicating the data packet index on the control domain. If the data packet index sent by the first node is 2 (i.e., the second data packet is sent), the first node may send signaling 01 indicating the data packet index on the control domain.

[0211] In some embodiments, the signaling indicating the power amplifier level corresponding to the first node has a one-to-one correspondence with the power amplifier level corresponding to the first node. If control information is transmitted via the control field and the control information includes signaling indicating the power amplifier level corresponding to the first node, the second node can determine the power amplifier level corresponding to the first node based on the signaling indicating the power amplifier level corresponding to the first node. For example, the following Table 4 shows the correspondence between the signaling indicating the power amplifier level corresponding to the first node and the power amplifier level corresponding to the first node.

[0212] Table 4

[0213] That is, it can be seen from Table 4 above that if the signaling indicating the power amplifier level corresponding to the first node is 11, the power amplifier level corresponding to the first node is 4.

[0214] For example, if the power amplifier level used when the first node sends the second signal is 1, the first node may send signaling 00 on the control domain indicating the power amplifier level corresponding to the first node. If the power amplifier level used is 2, the first node may send signaling 01 on the control domain indicating the power amplifier level corresponding to the first node. After receiving the second signal, the second node may determine the signaling indicating the power amplifier level corresponding to the first node based on the frame structure, and determine the power amplifier level corresponding to the first node based on the signaling, thereby determining the power when the first node sends the second signal.

[0215] In some embodiments, there is a one-to-one correspondence between the signaling indicating the power amplifier level corresponding to the first node and whether the power amplifier corresponding to the first node is enabled. If control information is transmitted via the control field and the control information includes signaling indicating the power amplifier level corresponding to the first node, the second node can determine whether the power amplifier corresponding to the first node is enabled based on the signaling indicating the power amplifier level corresponding to the first node. Table 5 below shows the correspondence between the signaling indicating the power amplifier level corresponding to the first node and whether the power amplifier corresponding to the first node is enabled.

[0216] Table 5

[0217] That is, it can be seen from the above Table 5 that if the signaling indicating the power amplifier level corresponding to the first node is 1, the power amplifier corresponding to the first node is enabled.

[0218] For example, if the corresponding power amplifier is enabled when the first node sends the second signal, the first node may send signaling 1 on the control domain indicating the power amplifier level corresponding to the first node. After receiving the second signal, the second node may determine signaling 1 indicating the power amplifier level corresponding to the first node based on the frame structure, and determine whether the power amplifier corresponding to the first node is enabled based on the signaling.

[0219] In some embodiments, the signaling indicating the symbol length corresponding to the data field and the symbol length corresponding to the data field are in a one-to-one correspondence. If control information is transmitted via the control field and the control information includes signaling indicating the symbol length corresponding to the data field, the second node may determine the symbol length corresponding to the data field based on the signaling indicating the symbol length corresponding to the data field. For example, the following Table 6 shows the correspondence between the signaling indicating the symbol length corresponding to the data field and the symbol length corresponding to the data field.

[0220] Table 6

[0221] That is, it can be seen from Table 6 above that if the signaling indicating the symbol length corresponding to the data field is 0, the symbol length corresponding to the data field is A. A and B are preset values.

[0222] For example, if the symbol length corresponding to the data field is A when the first node sends the second signal, the first node may send signaling 0 indicating the symbol length corresponding to the data field in the control field. After receiving the second signal, the second node may determine, based on the frame structure, signaling 0 indicating the symbol length corresponding to the data field, and determine, based on the signaling, that the symbol length corresponding to the data field is A.

[0223] Alternatively, as shown in Table 7 below, another correspondence between the signaling indicating the symbol length corresponding to the data field and the symbol length corresponding to the data field.

[0224] Table 7

[0225] That is, it can be seen from Table 7 above that if the signaling indicating the symbol length corresponding to the data field is 00, the symbol length corresponding to the data field is the same as the symbol length corresponding to the synchronization field.

[0226] For example, if the symbol length corresponding to the data field is 1 / 8 of the symbol length of the synchronization field when the first node sends the second signal, the first node may send signaling 01 indicating the symbol length corresponding to the data field in the control field. After receiving the second signal, the second node may determine the signaling 01 indicating the symbol length corresponding to the data field based on the frame structure, and determine, based on the signaling, that the symbol length corresponding to the data field is 1 / 8 of the symbol length of the synchronization field.

[0227] In some embodiments, the signaling indicating the modulation mode corresponding to the data field has a one-to-one correspondence with the modulation mode corresponding to the data field. If control information is transmitted via the control field and the control information includes signaling indicating the modulation mode corresponding to the data field, the second node may determine the modulation mode corresponding to the data field based on the signaling indicating the modulation mode corresponding to the data field. For example, the following Table 8 shows the correspondence between the signaling indicating the modulation mode corresponding to the data field and the modulation mode corresponding to the data field.

[0228] Table 8

[0229] That is, it can be seen from the above Table 8 that if the signaling indicating the modulation mode corresponding to the data field is 0, the modulation mode corresponding to the data field is the FSK mode (for example, 2-FSK).

[0230] For example, if the modulation mode corresponding to the data field is FSK+PSK when the first node sends the second signal, the first node may send signaling 1 in the control field to indicate the modulation mode corresponding to the data field. After receiving the second signal, the second node may determine that the signaling is 1 based on the frame structure, and determine that the modulation mode corresponding to the data field is FSK+PSK based on the signaling.

[0231] In some embodiments, the signaling indicating the data type transmitted by the second signal has a one-to-one correspondence with the data type. If the control information is transmitted via the data field and the control information includes signaling indicating the data type, the second node may determine the data type based on the signaling indicating the data type. For example, the correspondence between the signaling indicating the data type and the data type is shown in Table 9 below.

[0232] Table 9

[0233] That is, it can be seen from the above Table 9 that if the signaling indicating the data type is 0, the data type is retransmission data.

[0234] For example, if the data type is first-transmission data when the first node sends the second signal, the first node may send signaling 1 indicating the data type on the control domain. After receiving the second signal, the second node may determine, based on the frame structure, that the signaling indicating the data type is 1, and determine, based on the signaling, that the data type is first-transmission data.

[0235] In some embodiments, the signaling indicating the data bit rate of the second signal transmission has a one-to-one correspondence with the data bit rate. If the control information is transmitted via the data field and the control information includes signaling indicating the data bit rate, the second node may determine the data bit rate based on the signaling indicating the data bit rate. For example, the following Table 10 shows the correspondence between the signaling indicating the data type and the data type.

[0236] Table 10

[0237] That is, it can be seen from the above Table 10 that if the signaling indicating the data code rate is 0, the data code rate is 1 / 2.

[0238] For example, if the data code rate is 1 / 4 when the first node sends the second signal, the first node may send signaling 1 indicating the data code rate in the control domain. After receiving the second signal, the second node may determine, based on the frame structure, that the signaling indicating the data code rate is 1, and determine, based on the signaling, that the data code rate is 1 / 4.

[0239] In some embodiments, if the control information is transmitted through the data domain and the control information includes signaling indicating the time domain resources occupied by the data domain, the second node can determine the time domain resources occupied by the data domain based on the signaling indicating the time domain resources occupied by the data domain. Exemplarily, the signaling indicating the time domain resources occupied by the data domain can be used to indicate the starting position of the time domain resources and the length of the time domain resources. After receiving the second signal, the second node can determine the signaling indicating the time domain resources occupied by the data domain based on the frame structure, and then determine the starting position and length of the time-frequency resources occupied by the data domain, thereby receiving the data.

[0240] In some embodiments, for the implementation of the data field carrying control information, reference may be made to the content of the control information in the above-mentioned control field and the implementation of the control field carrying control information, which will not be repeated herein in the embodiments of the present disclosure.

[0241] It can be understood that in the method provided by the embodiment of the present disclosure, by adding control information in the data field of the frame structure, the second node can perform resource allocation and scheduling based on the control information after receiving the second signal, and select an appropriate processing method to ensure the correct analysis and processing of the second signal, thereby improving the performance and efficiency of the communication system.

[0242] Then, the check field in the frame structure is introduced.

[0243] In some embodiments, the check field is used to check the second signal.

[0244] In some embodiments, the check field is used to carry a cyclic redundancy check (CRC) code.

[0245] It can be understood that in the method provided in the embodiment of the present disclosure, the CRC code carried in the check field can be used to detect whether an error or data corruption occurs during the transmission of the second signal, so that the second node can determine the integrity of the data in the second signal, thereby ensuring the reliable transmission and correct analysis of the second signal.

[0246] Finally, the end field in the frame structure is introduced.

[0247] In some embodiments, the end field is used to indicate at least one of the following: the end of the data field, the end of the check field, and the end of the transmission block transmission.

[0248] In some embodiments, the end field is used to carry an end character. For example, the end character in the end field can be 0v1, where v is a violation character.

[0249] It is understood that the terminator carried in the end field can indicate the end of the data field, the end of the check field, and the end of the transport block transmission. The second node can determine the boundary of the frame structure based on the terminator to ensure correct parsing and processing of the received second signal and prevent confusion and overlap between different frames.

[0250] In some embodiments, as shown in FIG. 15 , the end field includes multiple end sub-fields, each end sub-field being used to indicate the end of transmission of each sub-block of a block.

[0251] In some embodiments, as shown in FIG16 , the end field includes a block end field and at least one sub-block end field. The block end field is used to indicate the end of transmission of a transport block, and the at least one sub-block end field is used to indicate the end of transmission of at least one sub-block within a block. The length corresponding to the sub-block end field is different from the length corresponding to the block end field; alternatively, the sequence corresponding to the sub-block end field is different from the sequence corresponding to the block end field.

[0252] In some embodiments, the symbol length of the frame structure is determined based on at least one of the following: the symbol length of the first signal, a second parameter, and a first preset length. The first preset length is a fixed value, and the second parameter is a fixed value or is determined based on the symbol length of the first signal.

[0253] As an example, when the first node sends the second signal based on the frame structure, the symbol length of the frame structure may be a first preset length. When the second node receives the second signal based on the frame structure, it may determine the symbol length of the frame structure based on the first preset length and receive the second signal.

[0254] As another example, when the first node transmits the second signal based on the frame structure, the symbol length of the frame structure may be a first preset length. When the second node receives the second signal based on the frame structure, it may determine, based on techniques such as blind detection, that the symbol length corresponding to the frame structure is the first preset length and search for the second signal in combination with the first preset length.

[0255] As another example, if the first signal is an excitation signal and the second signal is an uplink signal, the second signal is a scattered signal of the excitation signal, and the symbol length corresponding to the second signal is determined based on the symbol length of the excitation signal. For example, if the excitation signal is an orthogonal frequency division multiplexing (OFDM) signal with a corresponding symbol length of 71.36 μs, then the symbol length corresponding to the second signal is also 71.36 μs.

[0256] As another example, if the first signal is an excitation signal and the second signal is an uplink signal, the second signal is a scattered signal of the excitation signal, and the symbol length corresponding to the second signal is determined based on the symbol length of the excitation signal and the second parameter. For example, if the excitation signal is an OFDM signal and the corresponding symbol length is 71.36 us, and the second parameter is 1 / 2, then the symbol length corresponding to the second signal is 71.36 us * (1 / 2) = 35.68 us.

[0257] In some embodiments, the symbol lengths of the data field, the check field, and the control field are determined based on at least one of the following: the symbol length of the synchronization field and a third parameter. The third parameter is a fixed value or is determined based on signaling configuration.

[0258] As an example, the symbol length of the data field, the symbol length of the check field, and the symbol length of the control field are determined based on the symbol length of the synchronization field and the third parameter. If the first node determines that the symbol length of the synchronization field is N and the third parameter is K, then the symbol length of the data field, the symbol length of the check field, and the symbol length of the control field are all N*K.

[0259] As another example, the symbol length of the data field, the symbol length of the check field, and the symbol length of the control field are determined based on the symbol length of the synchronization field and the third parameter. If the first node determines that the symbol length of the third synchronization subfield in the synchronization field is L and the third parameter is K, then the symbol length of the data field, the symbol length of the check field, and the symbol length of the control field are all N*K.

[0260] It should be noted that the above are only some of the methods for determining the symbol length of the data field, the symbol length of the check field, and the symbol length of the control field provided in this disclosure. In actual implementation, based on different time scenarios and actual needs, the methods for determining the symbol length of the data field, the symbol length of the check field, and the symbol length of the control field may vary, and the embodiments of this disclosure do not limit this.

[0261] In some embodiments, the control field carries signaling indicating the symbol length of the data field. The symbol length of the data field is determined based on the signaling.

[0262] It is understood that in the method provided by the embodiment of the present disclosure, the symbol length of the frame structure and the symbol lengths of the data field, check field, and control field in the frame structure can be configured based on different parameters and determination methods, so that the frame structure can be more flexibly adapted to different communication scenarios and needs. By flexibly adjusting the symbol length of the frame structure and the symbol length of each field, the second node can maximize the use of available transmission resources, optimize the reliability and efficiency of data transmission, and thus ensure communication quality.

[0263] Based on the signal transmission method provided by the embodiment of the present disclosure, the first node (for example, a terminal) receives the first signal and sends the second signal to the second node (for example, a base station) based on the frame structure and the first signal. This allows the second node to demodulate the second signal based on the same frame structure after receiving the second signal, thereby ensuring the accuracy of the demodulation of the second signal. At the same time, the first node can add relevant information about the second signal to the frame structure, so that the second node can demodulate and extract the second signal more accurately based on the relevant information, thereby ensuring the integrity and accuracy of the data transmission. In addition, the first node can flexibly adjust the content in the frame structure (for example, adding certain indication information to the frame structure) to assist the second node in signal synchronization, thereby ensuring the communication quality between the first node and the second node.

[0264] 17 is a flowchart of another signal transmission method according to an embodiment of the present disclosure. As shown in FIG17 , the signal transmission method provided by the embodiment of the present disclosure is applied to the second node and includes the following S201.

[0265] In S201, a second signal sent by a first node based on a frame structure and a first signal is received.

[0266] In some embodiments, the second signal is used to transmit at least control information.

[0267] In some embodiments, the control information is carried in the control field and / or the data field.

[0268] In some embodiments, the control information includes at least one of the following: the data length transmitted by the second signal; the data packet index transmitted by the second signal; the number of sub-blocks corresponding to the data domain; the power amplifier level corresponding to the first node; the power amplifier margin corresponding to the first node; the symbol length corresponding to the data domain; the modulation method corresponding to the data domain; the coding method corresponding to the data domain; the data type transmitted by the second signal; the data bit rate transmitted by the second signal; the time domain resources occupied by the data domain; and the coverage capability of the first node.

[0269] In some embodiments, the frame structure includes at least one of the following: a silence field, a synchronization field, a control field, a data field, a check field, and an end field.

[0270] In some embodiments, the silent region is used for at least one of the following: achieving time domain synchronization, supporting the first node to acquire channel information, and assisting the second node to demodulate the second signal.

[0271] In some embodiments, the silent region is used to send a preset signal.

[0272] In some embodiments, the synchronization field is used to indicate at least one of the following: the code element length of the frame structure, the rate of the frame structure, the signal modulation method, the device type of the first node, the starting position of the control field, the code element length of the control field, the rate of the control field, the starting position of the data field, the code element length of the data field, and the rate of the data field.

[0273] In some embodiments, the check field is used to check the second signal.

[0274] In some embodiments, the check field carries a CRC.

[0275] In some embodiments, the end field is used to indicate at least one of the following: the end of the data field, the end of the check field, and the end of the transmission block transmission.

[0276] In some embodiments, the content of the above frame structure can refer to the description of the frame structure in S102 above, and the embodiments of the present disclosure will not be repeated here.

[0277] In some embodiments, the above signal transmission method further includes: sending a first signal to the first node.

[0278] In some embodiments, the implementation of sending the first signal to the first node may refer to the description of S101 above, and will not be repeated herein in the embodiment of the present disclosure.

[0279] It can be understood that based on the signal transmission method provided by the embodiment of the present disclosure, the second node can demodulate the second signal based on the same frame structure by receiving the second signal sent by the first node based on the frame structure and the first signal, thereby ensuring the accuracy of the demodulation of the second signal. At the same time, since the first node can add relevant information of the second signal in the frame structure, the second node can demodulate and extract the second signal more accurately based on the relevant information, thereby ensuring the integrity and accuracy of the data transmission. In addition, since the first node can flexibly adjust the content in the frame structure (for example, adding certain indication information in the frame structure), it can assist the second node in achieving signal synchronization, thereby ensuring the communication quality between the first node and the second node.

[0280] The above mainly introduces the scheme of the embodiment of the present disclosure from the perspective of method. It can be understood that, in order to realize the above functions, the signal transmission device includes at least one of the hardware structure and software modules corresponding to the execution of each function. It should be easy for those skilled in the art to realize that, in combination with the units and algorithm steps of each example described in the embodiment disclosed herein, the embodiment of the present disclosure can be implemented in the form of hardware or a combination of hardware and computer software. Whether a function is executed in the form of hardware or computer software driving hardware depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered to exceed the scope of the embodiment of the present disclosure.

[0281] It is understandable that, in order to realize the above functions, the signal transmission device includes hardware structures and / or software modules corresponding to the execution of each function. It should be easily appreciated by those skilled in the art that, in combination with the algorithm steps of each example described in the embodiments of the present disclosure, the present disclosure can be implemented in the form of hardware or a combination of hardware and computer software. Whether a function is executed in the form of hardware or computer software driving hardware depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered to be beyond the scope of the present disclosure.

[0282] The embodiment of the present disclosure can divide the functional modules of the signal transmission device according to the above-mentioned method embodiment. For example, each functional module can be divided corresponding to each function, or two or more functions can be integrated into one functional module. The above-mentioned integrated module can be implemented in the form of hardware or software. It should be noted that the division of modules in the embodiment of the present disclosure is schematic and is only a logical function division. There may be other division methods in actual implementation. The following is an example of dividing each functional module corresponding to each function.

[0283] Figure 18 is a schematic diagram of the structure of a signal transmission device according to an embodiment of the present disclosure. The signal transmission device is applied to a first node and can execute the signal transmission method provided by the above method embodiment. As shown in Figure 18, the signal transmission device 200 includes: a receiving module 201 and a sending module 202.

[0284] The receiving module 201 is configured to receive a first signal.

[0285] The sending module 202 is configured to send a second signal to a second node based on the frame structure and the first signal.

[0286] In some embodiments, the frame structure includes at least one of the following: a silence field, a synchronization field, a control field, a data field, a check field, and an end field.

[0287] In some embodiments, the silent region is used for at least one of the following: achieving time domain synchronization, supporting the first node to acquire channel information, and assisting the second node to demodulate the second signal.

[0288] In some embodiments, the silent region is used to send a preset signal.

[0289] In some embodiments, the silent domain includes at least one of the following: a first silent sub-domain, a second silent sub-domain, and a third silent sub-domain.

[0290] In some embodiments, the first silent sub-field is located at the beginning of the frame structure.

[0291] In some embodiments, the second silent sub-field appears in the frame structure with a period of M first time domain units; or the second silent sub-field appears in the data field with a period of M first time domain units, where M is a positive integer. The first time domain unit is one of the following: symbol, symbol, millisecond, or second.

[0292] In some embodiments, the value of M is determined based on at least one of the following: the length of the second silent sub-field, the symbol length of the first signal, the symbol length of the second signal, the subcarrier spacing of the first signal, and a first parameter. The first parameter is a fixed value or is determined based on signaling configuration.

[0293] In some embodiments, the third silent sub-field is located after the synchronization field in the frame structure.

[0294] In some embodiments, the synchronization field is used to indicate at least one of the following: the code element length of the frame structure, the code element rate of the frame structure, the modulation mode corresponding to the second signal, the device type of the first node, the starting position of the control field, the code element length of the control field, the code element rate of the control field, the starting position of the data field, the code element length of the data field, the code element rate of the data field, and the signal type transmitted by the frame structure.

[0295] In some embodiments, the synchronization domain includes at least one of the following: a first synchronization subdomain, a second synchronization subdomain, and a third synchronization subdomain.

[0296] In some embodiments, the first synchronization subfield includes a first sequence after the first encoding; the second synchronization subfield includes a second sequence or a second sequence after the second encoding; and the third synchronization subfield includes a third sequence after the third encoding.

[0297] In some embodiments, the first encoding, the second encoding or the third encoding includes at least one of the following: bi-phase space coding (FMO), Manchester coding, Miller coding, polar coding, Reed-Muller coding, and convolutional coding.

[0298] In some embodiments, the second sequence is one of the following: a binary sequence searched by a computer, a Golay complementary sequence.

[0299] In some embodiments, the first sequence is determined based on at least one of the cell where the first node is located; the second sequence is determined based on at least one of the following: the cell where the first node is located, the type of frame structure, the device type of the first node, and the signaling configuration; the third sequence is determined based on at least one of the following: the cell where the first node is located, the device type of the first node, the method for determining the first sequence, the method for determining the second sequence, and the method for transmitting the second signal.

[0300] In some embodiments, the synchronization domain further includes a first interval that does not support transmission signals.

[0301] In some embodiments, the first interval is located between synchronization sub-fields.

[0302] In some embodiments, the second signal is used to transmit at least control information.

[0303] In some embodiments, the control information is carried in the control field and / or the data field.

[0304] In some embodiments, the control information includes at least one of the following: the data length transmitted by the second signal; the data packet index transmitted by the second signal; the number of sub-blocks corresponding to the data domain; the power amplifier level corresponding to the first node; the power amplifier margin corresponding to the first node; the symbol length corresponding to the data domain; the modulation method corresponding to the data domain; the coding method corresponding to the data domain; the data type transmitted by the second signal; the data bit rate transmitted by the second signal; the time domain resources occupied by the data domain; and the coverage capability of the first node.

[0305] In some embodiments, the check field is used to check the second signal.

[0306] In some embodiments, the end field is used to indicate at least one of the following: the end of the data field, the end of the check field, and the end of the transmission block transmission.

[0307] In some embodiments, the end field includes a plurality of end sub-fields, and each end sub-field in the plurality of end sub-fields is used to indicate the end of transmission of each sub-block of the block.

[0308] In some embodiments, the end field includes a block end field and at least one sub-block end field. The block end field is used to indicate the end of transmission of a transport block, and the at least one sub-block transmission field is used to indicate the end of transmission of at least one sub-block within a block. The length corresponding to the sub-block end field is different from the length corresponding to the block end field; or, the sequence corresponding to the sub-block end field is different from the sequence corresponding to the block end field.

[0309] In some embodiments, the symbol length transmitted in the frame structure is determined based on at least one of the following: the symbol length of the first signal, a second parameter, and a first preset length, wherein the first preset length is a fixed value, and the second parameter is a fixed value or is determined based on the symbol length of the first signal.

[0310] In some embodiments, the symbol lengths of the data field, the check field, and the control field are determined based on at least one of the following: the symbol length of the synchronization field and a third parameter. The third parameter is a fixed value or is determined based on signaling configuration.

[0311] In some embodiments, the first signal is a downlink signal and / or an excitation signal.

[0312] Figure 19 is a schematic diagram of the structure of another signal transmission device according to an embodiment of the present disclosure. This signal transmission device is applied to a second node and can execute the signal transmission method provided by the above method embodiment. As shown in Figure 19, the signal transmission device 300 includes: a receiving module 301 and a sending module 302.

[0313] The receiving module 301 is configured to receive a second signal sent by a first node based on a frame structure and a first signal.

[0314] In some embodiments, the frame structure includes at least one of the following: a silence field, a synchronization field, a control field, a data field, a check field, and an end field.

[0315] In some embodiments, the silent region is used to send a preset signal.

[0316] In some embodiments, the synchronization field is used to indicate at least one of the following: the code element length of the frame structure, the rate of the frame structure, the signal modulation method, the device type of the first node, the starting position of the control field, the code element length of the control field, the rate of the control field, the starting position of the data field, the code element length of the data field, and the rate of the data field.

[0317] In some embodiments, the second signal is used to transmit at least control information.

[0318] In some embodiments, the control information is carried in the control field and / or the data field.

[0319] In some embodiments, the control information includes at least one of the following: the data length transmitted by the second signal; the data packet index transmitted by the second signal; the number of sub-blocks corresponding to the data domain; the power amplifier level corresponding to the first node; the power amplifier margin corresponding to the first node; the symbol length corresponding to the data domain; the modulation method corresponding to the data domain; the coding method corresponding to the data domain; the data type transmitted by the second signal; the data bit rate transmitted by the second signal; the time domain resources occupied by the data domain; and the coverage capability of the first node.

[0320] In some embodiments, the check field is used to check the second signal.

[0321] In some embodiments, the end field is used to indicate at least one of the following: the end of the data field, the end of the check field, and the end of the transmission block transmission.

[0322] In some embodiments, the sending module 302 is configured to send a first signal to a first node.

[0323] In the case of implementing the functions of the above-mentioned integrated modules in the form of hardware, the embodiments of the present disclosure provide a structure of the communication device involved in the above-mentioned embodiments. As shown in Figure 20, the communication device 400 includes: a processor 402 and a bus 404. In some embodiments, the communication device 400 may also include a memory 401. In some embodiments, the communication device 400 may also include a communication interface 403.

[0324] The processor 402 may implement or execute the various exemplary logic blocks, modules, and circuits described in conjunction with the embodiments of the present disclosure. The processor 402 may 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, a transistor logic device, a hardware component, or any combination thereof, and may implement or execute the various exemplary logic blocks, modules, and circuits described in conjunction with the embodiments of the present disclosure. The processor 402 may also be a combination that implements computing functions, such as a combination of one or more microprocessors, a combination of a DSP (Digital Signal Processor) and a microprocessor, and the like.

[0325] The communication interface 403 is used to connect to other devices via a communication network, such as Ethernet, wireless access network, or wireless local area network (WLAN).

[0326] The memory 401 may be a read-only memory (ROM) or other type of static storage device that can store static information and instructions, a random access memory (RAM) or other type of dynamic storage device that can store information and instructions, or an electrically erasable programmable read-only memory (EEPROM), a disk storage medium or other magnetic storage device, or any other medium that can be used to carry or store desired program code in the form of instructions or data structures and can be accessed by a computer, but is not limited thereto.

[0327] As an implementation, memory 401 may exist independently of processor 402. Memory 401 may be connected to processor 402 via bus 404 and used to store instructions or program codes. When processor 402 calls and executes the instructions or program codes stored in memory 401, the signal transmission method provided in the embodiments of the present disclosure can be implemented.

[0328] In another implementation, memory 401 may be integrated with processor 402. Bus 404 may be an Extended Industry Standard Architecture (EISA) bus, for example. Bus 404 may be divided into an address bus, a data bus, a control bus, and the like. For ease of illustration, FIG20 shows only one thick line, but this does not imply that there is only one bus or only one type of bus.

[0329] Some embodiments of the present disclosure provide a computer-readable storage medium (e.g., a non-transitory computer-readable storage medium). The computer-readable storage medium stores computer program instructions, which, when executed on a computer, cause the computer to execute the signal transmission method of any of the above embodiments.

[0330] Exemplarily, the above-mentioned computer-readable storage media may include, but are not limited to: magnetic storage devices (e.g., hard disks, floppy disks, or magnetic tapes), optical disks (e.g., compact disks (CDs), digital versatile disks (DVDs), etc.), smart cards, and flash memory devices (e.g., erasable programmable read-only memories (EPROMs), cards, sticks, or key drives, etc.). The various computer-readable storage media described in the present disclosure may represent one or more devices and / or other machine-readable storage media for storing information. The term "machine-readable storage medium" may include, but is not limited to, wireless channels and various other media capable of storing, containing, and / or carrying instructions and / or data.

[0331] The present disclosure provides a computer program product comprising instructions, which, when executed on a computer, enables the computer to execute the signal transmission method of any one of the above embodiments.

[0332] The above are only specific embodiments of the present disclosure, but the scope of protection of the present disclosure is not limited thereto. Any changes or replacements within the technical scope disclosed in the present disclosure should be included in the scope of protection of the present disclosure. Therefore, the scope of protection of the present disclosure should be based on the scope of protection of the claims.

Claims

1. A signal transmission method, applied to a first node, comprising: receiving a first signal; Based on the frame structure and the first signal, a second signal is sent to the second node.

2. The method according to claim 1, wherein The frame structure includes at least one of the following: a silence field, a synchronization field, a control field, a data field, a check field, and an end field.

3. The method according to claim 2, wherein: The silent region is used to send a preset signal.

4. The method according to claim 2, wherein: The silent domain includes at least one of the following: a first silent sub-domain, a second silent sub-domain, and a third silent sub-domain.

5. The method according to claim 4, wherein The first silent sub-field is located at the beginning of the frame structure.

6. The method according to claim 4, wherein: The second silent sub-field appears in the frame structure with a period of M first time domain units; or, the second silent sub-field appears in the data field with a period of M first time domain units; wherein the first time domain unit is one of the following: symbol, code element, millisecond, second, and M is a positive integer.

7. The method according to claim 6, wherein: The value of M is determined according to at least one of the following: the length of the second silent sub-domain, the symbol length of the first signal, the symbol length of the second signal, the subcarrier spacing of the first signal, and a first parameter; wherein the first parameter is a fixed value or is determined based on signaling configuration.

8. The method according to claim 4, wherein: The third silent sub-field is located after the synchronization field in the frame structure.

9. The method according to claim 2, wherein: The synchronization field is used to indicate at least one of the following: the code element length of the frame structure, the code element rate of the frame structure, the modulation mode corresponding to the second signal, the device type of the first node, the starting position of the control field, the code element length of the control field, the code element rate of the control field, the starting position of the data field, the code element length of the data field, the code element rate of the data field, and the signal type transmitted by the frame structure.

10. The method according to claim 2, wherein: The synchronization domain includes at least one of the following: a first synchronization subdomain, a second synchronization subdomain, and a third synchronization subdomain.

11. The method according to claim 10, wherein: The first synchronization subfield includes a first coded first sequence; The second synchronization subfield includes a second sequence or a second coded second sequence; The third synchronization sub-field includes a third sequence after third coding.

12. The method according to claim 11, wherein The first coding, the second coding or the third coding includes at least one of the following: bi-phase space code FM0, Manchester code, Miller code, polar code, Reed-Muller code, and convolutional code.

13. The method according to claim 11, wherein The second sequence is one of the following: a binary sequence searched by a computer, and a Golay complementary sequence.

14. The method according to claim 11, wherein The first sequence is determined based on at least a cell where the first node is located; The second sequence is determined based on at least one of the following: a cell where the first node is located, a type of the frame structure, a device type of the first node, a medium access control element MAC CE, and a radio resource control RRC signaling; The third sequence is determined based on at least one of the following: the cell where the first node is located, the device type of the first node, a method for determining the first sequence, a method for determining the second sequence, and a transmission method of the second signal.

15. The method according to claim 10, wherein The synchronization domain also includes a first interval that does not support transmission signals.

16. The method according to claim 15, wherein The first interval is located between the first synchronization subfield, and / or the second synchronization subfield, and / or the third synchronization subfield.

17. The method according to claim 2, wherein: The second signal is at least used to transmit control information.

18. The method according to claim 17, wherein The control information is carried in the control field and / or the data field.

19. The method according to claim 18, wherein The control information includes at least one of the following: the data length transmitted by the second signal; an index of a data packet transmitted by the second signal; The number of sub-blocks corresponding to the data field; A power amplifier level corresponding to the first node; A power amplifier margin corresponding to the first node; The symbol length corresponding to the data field; The modulation mode corresponding to the data domain; The encoding method corresponding to the data domain; the data type transmitted by the second signal; a data bit rate of the second signal transmission; The time domain resources occupied by the data domain; The coverage capability of the first node.

20. The method according to claim 2, wherein The check field is used to check the second signal.

21. The method according to claim 2, wherein The end field is used to indicate at least one of the following: the end of the data field, the end of the check field, and the end of transmission block transmission.

22. The method according to claim 21, wherein The end field includes multiple end sub-fields, and each end sub-field in the multiple end sub-fields is used to indicate the end of transmission of each sub-block of the transmission block.

23. The method according to claim 21, wherein The end field includes a block end field and at least one sub-block end field, the block end field is used to indicate the end of transmission of the transport block, and the at least one sub-block end field is used to indicate the end of transmission of at least one sub-block in the transport block; wherein, the length corresponding to each sub-block end field in the at least one sub-block end field is different from the length corresponding to the block end field; or, the sequence corresponding to each sub-block end field in the at least one sub-block end field is different from the sequence corresponding to the block end field.

24. The method according to claim 2, wherein The symbol length transmitted in the frame structure is determined based on at least one of the following: the symbol length of the first signal, a second parameter, and a first preset length; wherein the first preset length is a fixed value, and the second parameter is a fixed value or is determined based on the symbol length of the first signal.

25. The method according to claim 2, wherein The symbol length of the data field, the symbol length of the check field, and the symbol length of the control field are determined based on at least one of the following: the symbol length of the synchronization field and a third parameter; wherein the third parameter is a fixed value or is determined based on a signaling configuration.

26. The method according to claim 1, wherein The first signal is a downlink signal and / or an excitation signal.

27. A signal transmission method, applied to a second node, comprising: A second signal sent by the first node based on the frame structure and the first signal is received.

28. The method according to claim 27, wherein The frame structure includes at least one of the following: a silence field, a synchronization field, a control field, a data field, a check field, and an end field.

29. The method according to claim 28, wherein The silent region is used to send a preset signal.

30. The method of claim 28, wherein The synchronization field is used to indicate at least one of the following: the code element length of the frame structure, the rate of the frame structure, the signal modulation method, the device type of the first node, the starting position of the control field, the code element length of the control field, the rate of the control field, the starting position of the data field, the code element length of the data field, and the rate of the data field.

31. The method of claim 28, wherein The second signal is at least used to transmit control information.

32. The method according to claim 31, wherein The control information is carried in the control field and / or the data field.

33. The method according to claim 32, wherein The control information includes at least one of the following: the data length transmitted by the second signal; an index of a data packet transmitted by the second signal; The number of sub-blocks corresponding to the data field; A power amplifier level corresponding to the first node; A power amplifier margin corresponding to the first node; The symbol length corresponding to the data field; The modulation mode corresponding to the data domain; The encoding method corresponding to the data domain; the data type transmitted by the second signal; a data bit rate of the second signal transmission; The time domain resources occupied by the data domain; The coverage capability of the first node.

34. The method of claim 28, wherein The check field is used to check the second signal.

35. The method of claim 28, wherein The end field is used to indicate at least one of the following: the end of the data field, the end of the check field, and the end of transmission block transmission.

36. The method of claim 27, further comprising: The first signal is sent to the first node.

37. A communication device comprising: A memory and a processor; wherein the memory is coupled to the processor; the memory is used to store instructions executable by the processor; and when the processor executes the instructions, the method according to any one of claims 1 to 36 is performed.

38. A computer-readable storage medium, wherein: The computer-readable storage medium stores computer instructions, and when the computer instructions are executed on an electronic device, the electronic device is caused to perform the method according to any one of claims 1 to 36.

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