Data transmission method and communication apparatus

Abstract

A data transmission method and a communication apparatus. In a scenario in which communication symbols are used for performing sensing, for a plurality of different time-domain resource units, data carried on communication symbols used for performing sensing in each time-domain resource unit can be repeated in a time domain, and the manners in which data carried on communication symbols used for performing sensing in different time-domain resource units is repeated in the time domain are different. In other words, different communication data repetition manners are configured in different time-domain resource units, and said pieces of communication data (communication signals) are simultaneously used for performing sensing. In this way, interference influences (interference distributions) generated by other devices (e.g., other base stations) in different time-domain resource units are different, that is, different time-domain resource units correspond to different interference distributions, such that the interference influences of the other devices on the present communication device in networking can be effectively reduced, thereby improving the joint sensing performance of a plurality of time-domain resource units.

Description

Method and communication apparatus for data transmission

[0001] The present application claims priority from the Chinese patent application No. 202410867171.8 filed on June 28, 2024, and entitled "Method and communication apparatus for data transmission", the content of which is incorporated herein by reference in its entirety. TECHNICAL FIELD

[0002] The present application relates to the field of communication, and more particularly, to a method and communication apparatus for data transmission. BACKGROUND

[0003] Integrated sensing and communication (ISAC) technology is considered as one of the key technologies capable of expanding the service capability of mobile communication networks. In ISAC design, a target to be sensed needs to be sensed (e.g., the distance of the target to be sensed is measured). A transmitting device transmits a sensing signal, and a receiving device receives a reflected echo signal of the sensing signal reflected by the target to be sensed, and processes the echo signal to sense the target to be sensed. Of course, the sensing signal can also be used for communication at the same time.

[0004] Currently, symbols carrying data (i.e., communication symbols) can be used for sensing. For example, for symbols in multiple frames, part of the symbols carrying data in each frame can be used for sensing. For these symbols (communication symbols for sensing), the data transmitted by the same base station on different symbols is also different, and the cross-correlation between the data transmitted on different symbols is poor. Since other base stations also transmit data on these symbols, the data of the other base stations will interfere with the data of the base station. Moreover, since the cross-correlation between the data transmitted on different symbols is poor, the interference of the other base stations to the base station in each frame is the same, and the interference of the other base stations to the base station will increase the noise in the sensing detection, which may cause the target to be sensed to be submerged in the noise, resulting in a reduction in the sensing range and affecting the sensing performance. SUMMARY

[0005] The present application provides a method and communication apparatus for data transmission, which can improve the sensing performance of a target to be sensed using communication signals.

[0006] In a first aspect, a data transmission method is provided. The execution subject of the method can be a network device, a chip, a chip system, or a processor supporting the network device to implement the method, or a logic node, a logic module, or software, etc. that can implement all or part of the function of the network device. Alternatively, the execution subject of the method can be a terminal device, or a chip, a chip system, or a processor, etc. supporting the terminal device to implement the method. The method comprises: transmitting communication data on a symbol in a first time domain resource unit, the first time domain resource unit comprising a plurality of first symbols, the communication data carried on each first symbol being used for sensing at the same time; transmitting communication data on a symbol in a second time domain resource unit, the second time domain resource unit comprising a plurality of second symbols, the communication data carried on each second symbol being used for sensing at the same time; the repetition manner of the data carried on the plurality of first symbols in the time domain being different from the repetition manner of the data carried on the plurality of second symbols in the time domain, and the first time domain resource unit and the second time domain resource unit not overlapping in the time domain.

[0007] The method for data transmission provided in the first aspect can be used in a scenario where communication symbols are used for sensing. For a plurality of different time domain resource units, the repetition manner of the communication data used for sensing in the time domain is different, so that the interference influence (interference distribution) caused by other devices (for example, other base stations or terminals) in different time domain resource units is different, that is, different time domain resource units have different interference distributions, which can effectively reduce the interference influence caused by other devices, thereby improving the joint sensing performance of the plurality of time domain resource units.

[0008] For example, the first symbol and the second symbol are used for carrying communication data (which can also be referred to as data or a communication signal), but the communication data (data or a communication signal) carried on the first symbol and the second symbol can also be used for sensing at the same time. Some of the symbols in the first time domain resource unit can be the first symbol, or all the symbols in the first time domain resource unit can be the first symbol. Some of the symbols in the second time domain resource unit can be the second symbol, or all the symbols in the first time domain resource unit can be the second symbol.

[0009] For example, the first time domain resource unit can comprise a plurality of first symbols, which can be distributed in different time domain positions. The plurality of first symbols can be discontinuous or continuous in the time domain.

[0010] In a possible implementation of the first aspect, the method further includes: sending indication information, the indication information being used to indicate a repetition manner of the data carried on the plurality of first symbols in the time domain and a repetition manner of the data carried on the plurality of second symbols in the time domain. In this implementation, the receiving end device can be informed of the repetition manners corresponding to the different time domain resource units respectively, so that the receiving end device can accurately receive the data, and the accuracy and efficiency of data transmission are ensured.

[0011] In a possible implementation of the first aspect, the method further includes: receiving an echo signal corresponding to the communication data carried on the first symbol; receiving an echo signal corresponding to the communication data carried on the second symbol; and performing sensing on the target to be sensed according to the communication data sent on the first symbol, the echo signal corresponding to the communication data carried on the first symbol, the communication data sent on the second symbol, and the echo signal corresponding to the communication data carried on the second symbol. In this implementation, for the single-station sensing mode, when the communication data in the time domain resource units is used to sense the target to be sensed, the interference influence caused by other devices can be effectively reduced, and the joint sensing performance of the plurality of time domain resource units is improved.

[0012] In a second aspect, a method for data transmission is provided. The execution subject of the method can be a network device, a chip, a chip system, or a processor supporting the network device to implement the method, or a logic node, a logic module, or software, etc. that can implement all or part of the functions of the network device. Alternatively, the execution subject of the method can be a terminal device, or a chip, a chip system, or a processor, etc. supporting the terminal device to implement the method. The method includes: receiving communication data on a symbol in a first time domain resource unit, the first time domain resource unit including a plurality of first symbols, and the communication data carried on each first symbol being used for sensing at the same time; receiving communication data on a symbol in a second time domain resource unit, the second time domain resource unit including a plurality of second symbols, and the communication data carried on each second symbol being used for sensing at the same time, the repetition manner of the data carried on the plurality of first symbols in the time domain being different from the repetition manner of the data carried on the plurality of second symbols in the time domain, and the first time domain resource unit and the second time domain resource unit not overlapping in the time domain; and performing sensing on a target to be sensed according to the communication data carried on the first symbol, an echo signal corresponding to the communication data carried on the first symbol, the communication data carried on the second symbol, and an echo signal corresponding to the communication data carried on the second symbol.

[0013] The second aspect provides a data transmission method. In a scenario in which communication symbols are sensed, for a plurality of different time domain resource units, the repetition manners of the communication data used for sensing in different time domain resource units are different in the time domain, so that the interference influence (interference distribution) of the interference generated by other devices (for example, other base stations or terminals) in different time domain resource units is different, that is, different time domain resource units have different interference distributions. When the communication data in the time domain resource units is used to sense a to-be-sensed target, the interference influence generated by other devices can be effectively reduced, and the joint sensing performance of the plurality of time domain resource units is improved.

[0014] In a possible implementation of the second aspect, the method further includes: receiving indication information, the indication information being used to indicate the repetition manner of the data carried on the plurality of first symbols in the time domain and the repetition manner of the data carried on the plurality of second symbols in the time domain. In this implementation, the repetition manner corresponding to different time domain resource units is obtained through the indication information, so that the data can be accurately received, and the accuracy and efficiency of data transmission are ensured.

[0015] In a possible implementation of the first aspect or the second aspect, the repetition manner of the data carried on the plurality of first symbols in the time domain includes a first repetition level and a first repetition number, and the repetition manner of the data carried on the plurality of second symbols in the time domain includes a second repetition level and a second repetition number. The first repetition level indicates the number of different data carried on the plurality of first symbols, and the first repetition number indicates the number of continuous symbols occupied by the same data in the plurality of first symbols. The second repetition level indicates the number of different data carried on the plurality of second symbols, and the second repetition number indicates the number of continuous symbols occupied by the same data in the plurality of second symbols. In this implementation, the repetition level and the number are used to represent the repetition manner of the data in the time domain, and the implementation is relatively simple and easy to implement. Moreover, the repetition manner of the data in the time domain can be accurately represented.

[0016] In a possible implementation of the first aspect or the second aspect, the first repetition level and the second repetition level are different, and the first repetition number and the second repetition number are the same or different. In this implementation, the communication performance can be ensured on the basis of obtaining the joint sensing gain of the plurality of time domain resource units.

[0017] In a possible implementation of the first aspect or the second aspect, the first repetition level and the second repetition level are the same, and the first repetition number and the second repetition number are different. In this implementation, the communication performance can be ensured on the basis of obtaining the joint sensing gain of the plurality of time domain resource units.

[0018] For example, the first time domain resource unit and the second time domain resource unit correspond to different repetition levels, and the repetition numbers are both 1. In this case, the accuracy of detecting (sensing) a stationary target by the terminal device can be improved.

[0019] In a possible implementation of the first aspect or the second aspect, the first time domain resource unit or the second time domain resource unit includes one or more frames, one or more subframes, one or more slots, or multiple symbols.

[0020] In a third aspect, a communication apparatus is provided. The apparatus includes: means (e.g., including a processing module and an interface module) for performing each step in the first aspect or any possible implementation of the first aspect, or means (e.g., including a processing module and an interface module) for performing each step in the second aspect or any possible implementation of the second aspect.

[0021] In a fourth aspect, a communication apparatus is provided. The apparatus includes at least one processor and a memory. The at least one processor is configured to perform: the method in the first aspect or any possible implementation of the first aspect, or the method in the second aspect or any possible implementation of the second aspect.

[0022] In a fifth aspect, a communication apparatus is provided. The apparatus includes at least one processor and an interface circuit. The at least one processor is configured to perform: the method in the first aspect or any possible implementation of the first aspect, or the method in the second aspect or any possible implementation of the second aspect.

[0023] For example, the communication apparatus can be a network device, a chip, a chip system, or a processor in the network device, or the like, and can also be a logic node, a logic module, or software, or the like, which can implement all or part of the functions of the network device.

[0024] For another example, the communication apparatus can be a terminal device, a chip, a chip system, or a processor in the terminal device, or the like.

[0025] In a sixth aspect, a network device or a terminal device is provided. The network device includes the communication apparatus provided in the third aspect, or the terminal device includes the communication apparatus provided in the fourth aspect, or the terminal device includes the communication apparatus provided in the fifth aspect.

[0026] In a seventh aspect, a network device or a terminal device is provided. The network device includes the communication apparatus provided in the sixth aspect, or the network device includes the communication apparatus provided in the seventh aspect, or the network device includes the communication apparatus provided in the eighth aspect.

[0027] In an eighth aspect, a computer program product is provided, which includes a computer program, when executed by a processor, for performing the method in the first aspect or any possible implementation of the first aspect, or the method in the second aspect or any possible implementation of the second aspect.

[0028] In a ninth aspect, a computer-readable storage medium is provided, which stores a computer program, when executed by a processor, for performing the method in the first aspect or any possible implementation of the first aspect, or the method in the second aspect or any possible implementation of the second aspect.

[0029] In a tenth aspect, a chip is provided, which includes a processor for invoking and running a computer program from a memory, so that a communication device installed with the chip performs the method in the first aspect or any possible implementation of the first aspect, or the method in the second aspect or any possible implementation of the second aspect.

[0030] In an eleventh aspect, a chip or system on chip is provided, which includes a logic circuit for implementing the method in the first aspect or any possible implementation of the first aspect, or the method in the second aspect or any possible implementation of the second aspect. Optionally, the chip or system on chip can further include an interface circuit.

[0031] In a twelfth aspect, a communication system is provided, which includes the terminal device provided in the sixth aspect and the network device provided in the seventh aspect, or the network device provided in the sixth aspect and the terminal device provided in the seventh aspect. BRIEF DESCRIPTION OF DRAWINGS

[0032] FIG. 1 is a schematic diagram of a single station sensing of a network device.

[0033] FIG. 2 is a schematic diagram of double station sensing of two network devices.

[0034] FIG. 3 is a schematic diagram of sensing using a communication symbol.

[0035] FIG. 4 is a schematic diagram of a communication system suitable for embodiments of the present application.

[0036] FIG. 5 is a schematic diagram of another communication system suitable for embodiments of the present application.

[0037] FIG. 6 is a schematic diagram of yet another communication system suitable for embodiments of the present application.

[0038] FIG. 7 is a schematic flowchart of a method of data transmission according to an embodiment of the present application.

[0039] FIG. 8 is a schematic diagram of a time domain resource unit according to an embodiment of the present application.

[0040] FIG. 9 is a schematic diagram of a repetition level and a repetition number corresponding to a first time domain resource unit according to an embodiment of the present application.

[0041] FIG. 10 is a schematic diagram of a repetition level and a repetition number corresponding to a first time domain resource unit according to another embodiment of the present application.

[0042] FIG. 11 is a schematic diagram of a repetition level and a repetition number corresponding to a second time domain resource unit according to an embodiment of the present application.

[0043] FIG. 12 is a schematic diagram of a repetition level and a repetition number corresponding to a second time domain resource unit according to another embodiment of the present application.

[0044] FIG. 13 is a schematic diagram of a repetition manner corresponding to a first time domain resource unit and a second time domain resource unit respectively according to an embodiment of the present application.

[0045] FIG. 14 is a schematic block diagram of a communication apparatus according to an embodiment of the present application.

[0046] FIG. 15 is a schematic block diagram of a communication apparatus according to another embodiment of the present application.

[0047] FIG. 16 is a schematic block diagram of a communication apparatus according to an embodiment of the present application.

[0048] FIG. 17 is a schematic block diagram of a communication apparatus according to another embodiment of the present application.

[0049] FIG. 18 is a schematic block diagram of a terminal device according to an embodiment of the present application.

[0050] FIG. 19 is a schematic block diagram of a network device according to an embodiment of the present application. DETAILED DESCRIPTION

[0051] The technical solutions in the present application will be described below with reference to the drawings.

[0052] In the description of the embodiments of the present application, unless otherwise specified, " / " represents the meaning of or, for example, A / B can represent A or B; "and / or" herein only describes the association relationship of the associated objects, which means that there can be three relationships, for example, A and / or B, which can represent the three cases of A alone, A and B together, and B alone. In addition, in the description of the embodiments of the present application, "multiple" means two or more than two.

[0053] Hereinafter, the terms "first", "second", "third", etc. are used only for the purpose of description, and should not be understood as indicating or implying relative importance or a specific number of the technical features indicated. Therefore, the features defined with "first", "second", etc. can explicitly or implicitly include one or more of the features. In the description of the embodiments, the meaning of "a plurality of" is two or more, unless otherwise specified.

[0054] In the embodiments of the present application, the terminal device or the network device includes a hardware layer, an operating system layer running on the hardware layer, and an application layer running on the operating system layer. The hardware layer includes hardware such as a central processing unit (CPU), a memory management unit (MMU), and a memory (also known as main memory). The operating system can be any one or more computer operating systems that implement business processing through processes, such as a Linux operating system, a Unix operating system, an Android operating system, an iOS operating system, or a windows operating system. The application layer includes applications such as a browser, an address book, word processing software, and instant messaging software. Moreover, the embodiments of the present application do not particularly limit the specific structure of the execution subject of the method provided by the embodiments of the present application, as long as the execution subject can communicate according to the method provided by the embodiments of the present application by running a program in which the code of the method provided by the embodiments of the present application is recorded, for example, the execution subject of the method provided by the embodiments of the present application can be a terminal device or a network device, or a functional module capable of calling and executing a program in a terminal device or a network device.

[0055] In addition, various aspects or features of the present application can be implemented as methods, apparatuses, or articles of manufacture using standard programming and / or engineering techniques. The term "article of manufacture" as used in the application encompasses a computer program accessible from any computer-readable device, carrier, or media. For example, computer-readable media can include, but are not limited to, magnetic storage devices (e.g., hard disk, floppy disk, or magnetic tape), optical storage devices (e.g., compact disk (CD), digital versatile disk (DVD), etc.), smart cards, and flash memory devices (e.g., EPROM, card, stick, or key drive). In addition, the various storage media described herein can represent one or more devices and / or other machine-readable media for storing information. The term "machine-readable medium" can include, but is not limited to, wireless channels and various other media capable of storing, containing, and / or carrying instructions and / or data.

[0056] In the process of the 5th generation (5G) mobile communication system evolving into 5G-advanced (5G-A) technology, the ISAC technology is considered as one of the key technologies capable of expanding the service capability of the mobile communication network. The core idea of this technology is to add sensing capability on the mobile communication network to build the capability of detecting, tracking and imaging the target, so as to make the communication and sensing capabilities coexist in one network, and even benefit each other.

[0057] There are certain differences between the principles of sensing technology and communication technology. The principle of communication technology is mainly that the sending end modulates information on the radio wave and sends it to the receiving end, and the receiving end demodulates the signal (or also called communication signal) carried on the radio wave to obtain information. The principle of sensing technology requires the sending end to send radio waves (or also called sensing signals) to a specific direction, and when the radio waves irradiate the target surface, reflected waves (or also called echo signals or reflected signals) are formed, so that the receiving end obtains the position, speed and type of the target by receiving and processing the reflected waves.

[0058] Sensing can be generally divided into two modes: single-station sensing and double-station sensing. Among them, the feature of single-station sensing is that the sending end and the receiving end of the sensing signal are the same device. From the sensing signal flow, the sensing station not only sends the sensing signal, but also receives the signal reflected on the target surface, so the single-station sensing mode can also be called self-transmission and self-reception mode. For double-station sensing, the sending end and the receiving end of the sensing signal are two different devices. From the sensing signal flow, the sensing signal sent by sensing station A is received by sensing station B, so the double-station sensing mode is also called A-transmission and B-reception mode.

[0059] For example, Fig. 1 shows a schematic diagram of single-station sensing of a network device. As shown in Fig. 1, the network device and the terminal device communicate with each other using communication signals, and the network device sends sensing signals to the target to be sensed, the target to be sensed reflects the sensing signals to form echo signals, and the network device receives the echo signals to sense the target to be sensed using the echo signals and the sensing signals.

[0060] For another example, Fig. 2 shows a schematic diagram of double-station sensing of two network devices. As shown in Fig. 2, the network device A and the terminal device communicate with each other using communication signals, and the network device A sends sensing signals to the target to be sensed, the target to be sensed reflects the sensing signals to form echo signals, and the network device B receives the echo signals to sense the target to be sensed using the echo signals and the sensing signals.

[0061] In a wireless communication system, communication can be classified into different types according to the types of the sending node and the receiving node. Generally, sending information from a network device to a terminal device is referred to as downlink communication, and sending information from a terminal device to a network device is referred to as uplink communication. In a long term evolution (LTE) / long term evolution advanced (LTE-A) communication system and a new radio (NR) system, according to different duplex modes, the system can be mainly classified into a frequency division duplex (FDD) mode and a time division duplex (TDD) mode. For a wireless communication system operating in the TDD mode, the downlink carrier and the uplink carrier of the system are carriers of the same carrier frequency. A multiple access manner usually adopts an orthogonal frequency division multiplexing access (OFDMA) manner. The main feature of the OFDMA manner is to divide transmission resources into mutually orthogonal time-frequency resource elements (REs), and signals sent by a sending end are transmitted to a receiving end on the REs. Because different REs are mutually orthogonal, the receiving end can separately receive signals sent on each RE.

[0062] In a case of sensing fusion (sensing integration), sensing can be performed by using a communication signal. For example, in a typical slot ratio, a base station can use a symbol carrying data to perform sensing.

[0063] For example, FIG. 3 shows a schematic diagram of an example of using a communication symbol (a symbol carrying data) to perform sensing. As shown in FIG. 3, for a base station to send a sensing signal, a terminal device to receive a sensing signal, and a backhaul signal, the last symbol (for example, an OFDM symbol) carrying data in a downlink slot can be extracted, and sensing can be performed while communication is performed. Such a symbol used for both communication and sensing can also be referred to as a sensing integration symbol, a sensing symbol, or a sensing fusion symbol, and the like.

[0064] At present, symbols carrying data (i.e., communication symbols) can be perceived, but the data carried on different symbols (i.e., different communication symbols) has randomness. For example, different base stations send different data on the same symbol, and the same base station sends different data on different symbols. The poor correlation between the data (or also referred to as data sequences) sent on different symbols will cause the sensing performance of the base station to decrease under networking. For example, base station 1 uses two sensing frames for sensing, and there are 4 data symbols (also referred to as communication symbols) in the first sensing frame for sensing, and there are also 4 data symbols in the second sensing frame for sensing. The data sent by base station 1 on the 8 symbols in the two sensing frames is different. For base station 2, different data is also sent on the above-mentioned 8 symbols, so the interference effect (interference distribution) of base station 2 on the two sensing frames used by base station 1 is the same. The interference of base station 2 to base station 1 will increase the noise during sensing detection as a whole. In other words, other base stations and the base station will send different data sequences on the same symbol, and other base stations will interfere with the data of the base station. Since other base stations will produce the same interference to the base station in each sensing frame, the interference of other base stations to the base station will increase the noise during sensing detection as a whole, which may cause the target to be perceived to be submerged in the noise, resulting in a reduction in the sensing range. At the same time, if the interference of other base stations to the base station is staggered, the base station will always be unable to detect the target to be perceived in some "areas". For sensing detection, the target to be perceived is detected in the dimensions of distance, angle, speed, etc. The interference caused by different communication signals (communication data) mainly causes interference to the target to be perceived in the distance and speed spectrum. The above-mentioned "areas" can be understood as some areas in the sensing detection spectrum, and different areas actually correspond to different distances and different speeds of sensing detection. Among them, "staggered interference" can be understood as changing the distribution of interference, such as affecting the interference level at different speeds. For example, assuming that the interference distribution of base station 2 to base station 1 is concentrated in the 1m / s area, and the interference distribution of base station 3 to base station 1 is concentrated in the 3m / s area, at this time, the interference of the two base stations to base station 1 is staggered, which will cause base station 1 to be unable to detect the target to be perceived with a speed of 1m / s and 3m / s.

[0065] In the symbols used for sensing (such as the above-mentioned 8 symbols), the actual transmission on the symbol is communication data. Since the communication data carried on each symbol is different, the inter-base station interference received during sensing is large. When the data carried on each symbol is fixed to be the same (identical), i.e., the same data is transmitted on each symbol, the sensing performance is optimal. However, since multiple symbols can only transmit one (kind) of data, the communication efficiency is low. Therefore, a compromise method can be adopted, i.e., the communication symbols used for sensing in each sensing frame are repeated, i.e., the multiple different data carried on the symbols used for sensing in each sensing frame can be repeated.

[0066] In view of this, the present application provides a data transmission method and a communication device. In a scenario where communication symbols are used for sensing, for multiple different time domain resource units, the data carried on the communication symbols used for sensing in each time domain resource unit can be repeated in the time domain, and the repetition modes of the data carried on the communication symbols used for sensing in different time domain resource units are different. In other words, different communication data repetition modes are configured in different time domain resource units, and the communication data (communication signals) are used for sensing at the same time. In this way, the interference influence (interference distribution) generated by other devices (such as other base stations) in different time domain resource units is different, i.e., different time domain resource units correspond to different interference distributions, which can effectively reduce the interference influence of other devices on the communication device (such as the base station), thereby improving the joint sensing performance of multiple time domain resource units.

[0067] To facilitate understanding of the embodiments of the present application, first, a communication system suitable for the embodiments of the present application is briefly introduced in conjunction with FIGS. 4-6.

[0068] For example, the data transmission method provided by the present application can be applied in a communication and sensing integrated scenario or communication system, for example, FIG. 4 shows a schematic diagram of a communication and sensing integrated communication system (or also can be referred to as a communication scenario and sensing scenario integrated). As shown in FIG. 4, the system includes a network device, multiple terminal devices, and multiple sensing targets or sensed targets. The network device and the terminal devices in the communication system can perform wireless communication and can also sense objects (i.e., sensing targets or sensed targets) without communication function. For example, the sensing targets can include mobile targets such as vehicles, low-altitude unmanned aerial vehicles, pedestrians, and the like, and of course, also include stationary objects in the environment, such as buildings, ground, and the like. The embodiments of the present application do not limit the specific form of the sensing targets.

[0069] For example, FIG. 5 shows a diagram of an example sensing scenario, and FIG. 5 shows different sensing modes. As shown in FIG. 5(a), a single station sensing mode is used by a network device to utilize sensing signals, i.e., a self-transmitting and self-receiving mode of the network device. As shown in FIG. 5(b), a single station sensing mode is used by a terminal device to utilize sensing signals, i.e., a self-transmitting and self-receiving mode of the terminal device. As shown in FIG. 5(c), a double station sensing mode is used between different network devices (network device A and network device B) to utilize sensing signals, i.e., a transmitting mode of network device A and a receiving mode of network device B. As shown in FIG. 5(d), a single station sensing mode is used between different terminal devices (terminal device A and terminal device B) to utilize sensing signals, i.e., a transmitting mode of terminal device A and a receiving mode of terminal device B. As shown in FIG. 5(e), a double station sensing mode is used between a network device and a terminal device, and the reflection signal of the sensing signal transmitted by the network device on the sensing target surface is received by the terminal device. As shown in FIG. 5(f), a double station sensing mode is used between a terminal device and a network device, and the reflection signal of the sensing signal transmitted by the terminal device on the sensing target surface is received by the network device.

[0070] It should be understood that the sensing scenario in the communication system shown in FIG. 4 can include one or more of those shown in FIG. 5.

[0071] For example, in the examples shown in FIG. 4 and FIG. 5, the method provided in the embodiments of the present application can be used in the process of sensing by the network device or the terminal device using the communication symbol.

[0072] For example, FIG. 6 shows another example of a communication system 60 applicable to the embodiments of the present application. As shown in FIG. 6, the communication system 60 includes a radio access network (RAN) 600, a core network (CN) 630, and an Internet 640. The RAN 600 includes at least one RAN node (such as node 610a and node 610b in FIG. 6, collectively referred to as 610) and at least one terminal (such as 620a-620j in FIG. 6, collectively referred to as 620). The RAN 600 can also include other RAN nodes, such as wireless relay devices and / or wireless backhaul devices (not shown in FIG. 6), etc. For example, the "node" can also be referred to as a "network element", for example, the node 610a and the node 610b can also be referred to as the network element 610a and the network element 610b, and the node 620a to the node 620j can also be referred to as the network element 620a to the network element 620j.

[0073] The terminal 620 is connected to the RAN node 610 through wireless or wired means. Different terminals are connected through wireless or wired means for communication. The RAN node 610 is connected to the core network 630 through wireless or wired means. The core network device in the core network 630 and the RAN node 610 in the RAN 600 can be different physical devices respectively, or can be integrated into the same physical device, or can be a physical device integrated with part of the function of the core network device and part of the function of the RAN node 610.

[0074] For example, the communication system shown in FIG. 4, FIG. 5 and the RAN 600 shown in FIG. 6 can be a 3rd generation partnership project (3GPP) related cellular system, such as a long term evolution (LTE) system, an LTE frequency division duplex (FDD) system, an LTE time division duplex (TDD) system, a universal mobile telecommunications system (UMTS) system, a worldwide interoperability for microwave access (WiMAX) communication system, a 5G mobile communication system (including standalone and non-standalone), a new radio (NR) system, a wireless fidelity (Wifi) system, a future-oriented evolution system (such as a future communication network), a long range radio (LoRa) system or a vehicle-to-everything system, a cloud radio access network (CRAN), or an open access network (O-RAN or ORAN) system, or a communication system combining two or more of the above systems. The embodiments of the present application are not limited here.

[0075] The RAN node 610, which can also be referred to as an access network device, a wireless access network device, a network device (such as the network device shown in FIG. 4 and FIG. 5), a RAN entity or an access node, etc., constitutes a part of the communication system, and helps the terminal to realize wireless access. The plurality of RAN nodes 610 in the communication system 60 can be nodes of the same type or nodes of different types.

[0076] In some scenarios, the roles of the RAN nodes 610 and the terminals 620 are relative, for example, the network element 620i in FIG. 6 can be a helicopter or a drone, which can be configured to move a base station, for those terminals 620j accessing to the RAN 600 through the network element 620i, the network element 620i is a base station; but for the base station 610a, the network element 620i is a terminal. That is, the base station 610a and the terminal 620i communicate through a wireless air interface protocol. Optionally, the base station 610a and the network element 620i can also communicate through an interface protocol between base stations and base stations, at this time, the network element 620i is also a base station relative to 610a. The RAN nodes 610 and the terminals 620 are sometimes referred to as communication apparatuses, for example, the network elements 610a and 610b in FIG. 6 can be understood as communication apparatuses with base station functions, and the network elements 620a-620j can be understood as communication apparatuses with terminal functions.

[0077] In a possible scenario, the RAN nodes shown in FIG. 6, or the network devices shown in FIG. 4 and FIG. 5 can be a base station, an evolved NodeB (eNodeB), an access point (AP), a transmission reception point (TRP), a next generation NodeB (gNB), a base station in a future communication network, a base station in a future mobile communication system, an access node in a WiFi system, a wireless relay node, a wireless backhaul node, etc. The RAN node can be a macro base station (such as 610a in FIG. 6), a micro base station or an indoor station (such as 610b in FIG. 6), a relay node or a donor node, or a wireless controller in a CRAN scenario. Optionally, the RAN node can also be a server, a wearable device, a vehicle or a vehicle-mounted device, etc. For example, the access network device in vehicle to everything (V2X) technology can be a road side unit (RSU). All or part of the functions of the RAN node in the present application can also be implemented by software functions running on hardware, or by virtualized functions instantiated on a platform (such as a cloud platform). The RAN node in the present application can also be a logic node, a logic module or software that can implement all or part of the functions of the RAN node.

[0078] In another possible scenario, a terminal is assisted by multiple RAN nodes or multiple network devices to implement wireless access, and different RAN nodes respectively implement part of functions of a base station. For example, a RAN node or a network device in FIG. 4 can be a central unit (CU), a distributed unit (DU), a CU-control plane (CP), a CU-user plane (UP), or a radio unit (RU), etc. The CU and the DU can be separately arranged, or can be included in the same network element, for example, in a baseband unit (BBU). The RU can be included in a radio frequency device or a radio frequency unit, for example, in a remote radio unit (RRU), an active antenna processing unit (AAU), or a remote radio head (RRH).

[0079] In some examples, the CU can be a logical node that carries functions of a radio resource control (RRC) layer, a service data adaptation protocol (SDAP) layer, a packet data convergence protocol (PDCP) layer, and other control functions of an access network device.

[0080] In some examples, the DU can be a logical node that carries functions of a radio link control (RLC) layer, a medium access control (MAC) layer, a high physical layer (Higher PHY or PHY_High), and other functions.

[0081] In some examples, the RU can be a logical node that carries a low physical layer (Lower PHY or PHY_low) and radio frequency (RF) processing.

[0082] In different systems, CU (or CU-CP and CU-UP), DU, or RU may have different names, but those skilled in the art will understand their meaning. For example, in an ORAN system, CU can also be called O-CU (open CU), DU can also be called O-DU, CU-CP can also be called O-CU-CP, CU-UP can also be called O-CU-UP, and RU can also be called O-RU. Any of the units among CU (or CU-CP, CU-UP), DU, and RU in this application can be implemented through software modules, hardware modules, or a combination of software modules and hardware modules.

[0083] In the embodiments of this application, the RAN node or network device can be a device with sensing capabilities, which can transmit sensing signals and receive and process echo signals from targets in the environment. Alternatively, it can receive uplink signals from terminal devices or send downlink signals to terminal devices. In other words, the RAN node or network device can be applied in sensing and communication scenarios.

[0084] As can be understood, in the example shown in Figure 6, different network elements can communicate with each other using communication signals, and can also sense the target to be sensed using sensing signals. In addition, any single network element (RAN node or terminal device) can also sense the target to be sensed using sensing signals, i.e., single-site sensing mode.

[0085] For example, in the example shown in Figure 6, any network element can use the method provided in the embodiments of this application during the sensing process using communication signals.

[0086] For example, RAN nodes or network devices and terminals can be fixed in location or mobile. RAN nodes and terminals can be deployed on land, including indoors or outdoors, handheld or vehicle-mounted; they can also be deployed on water; and they can also be deployed on aircraft, balloons, and artificial satellites. The embodiments of this application do not limit the application scenarios of RAN nodes and terminals.

[0087] In the embodiments of this application, the functions of the RAN node can be executed by modules (such as chips) within the RAN node, or by a control subsystem that includes RAN node functions. For example, a control subsystem that includes RAN node functions can be a control center in application scenarios such as smart grids, industrial control, intelligent transportation, and smart cities. The functions of the terminal can also be executed by modules (such as chips or modems) within the terminal, or by a device that includes terminal functions.

[0088] In the embodiments of the present application, the terminal can also be referred to as a terminal device, a user equipment (UE), a mobile station, a mobile terminal, etc. It is an entity on the user side for receiving or transmitting signals, used for transmitting uplink signals to a network device, receiving downlink signals from the network device, transmitting signals to another terminal device, receiving signals from another terminal device, or receiving echo signals of signals transmitted by itself. The terminal can be widely applied to various scenarios, such as device-to-device (D2D) communication, vehicle to everything (V2X) communication, machine-type communication (MTC), internet of things (IOT), virtual reality (VR), augmented reality (AR), industrial control, self driving, remote medical, smart grid, smart furniture, smart office, smart wear, smart transportation, smart city, etc. The terminal can be a mobile phone, a tablet computer, a computer with wireless transceiver function, a wearable device, a vehicle, a drone, a helicopter, an airplane, a ship, a robot, a mechanical arm, a smart home device, a communication device in D2D, an internet-of-things device in MTC, a camera in smart transportation and smart city, or a communication device on a drone, etc. The embodiments of the present application do not limit the device form of the terminal.

[0089] It should be understood that in the embodiments of the present application, the "RAN node" can also have different expressions, for example, the "RAN node" can also be referred to as a network device, an access network device, or a wireless access network device, etc. In the present application, the subsequent description is expressed as "network device" without special description, wherein the network device is the original expression of the access network device (such as a base station).

[0090] It should be understood that the communication system shown in FIGS. 4 to 6 is only exemplary and should not cause any limitation on the communication system applicable to the embodiments of the present application. For example, more or fewer network nodes, such as terminal devices or RAN nodes, can be included in the communication system shown in FIG. 6, and the RAN nodes or terminal devices included in the communication system shown in FIG. 6 can be various forms of RAN nodes or terminal devices described above. The embodiments of the present application are not shown one by one in the drawings.

[0091] The method for data transmission provided by the present application is described below in combination with specific examples.

[0092] It should be understood that, in the embodiments of the present application, the network device and the terminal device are taken as examples of the execution subject of the method, and the method is described. By way of example but not limitation, the terminal device in the present application can also be a chip, a chip system, or a processor, etc. that supports the terminal device to implement the method. The network device in the present application can also be a chip, a chip system, or a processor, etc. that supports the network device to implement the method, or can also be a logic node, a logic module, or software, etc. that can implement all or part of the network device functions. The embodiments of the present application are not limited here.

[0093] The method for data transmission provided by the present application is described below in combination with FIG. 7, which is a schematic flowchart of the method for data transmission according to an embodiment of the present application. The method 700 can be applied in the scenarios or communication architectures shown in FIGS. 4 to 6, and of course can also be applied in other communication scenarios or communication architectures in which the above problems exist. The embodiments of the present application are not limited here.

[0094] In the embodiments of the present application, the network device can send the sensing and communication integrated signal to the terminal device in multiple different time domain resource units respectively, and the terminal device performs joint sensing in multiple different time domain resource units after receiving the sensing and communication integrated signal in the multiple different time domain resource units, so as to realize sensing on the target to be sensed and communication with the network device.

[0095] As shown in FIG. 7, the method 700 shown in FIG. 7 can include S710 to S750. Each step in the method 700 is described in detail below in combination with FIG. 7. In the example shown in FIG. 7, two time domain resource units are taken as an example for description, but it should be understood that in other embodiments of the present application, more time domain resource units can also be used for joint sensing. The embodiments of the present application are not limited here.

[0096] S710, the network device determines a repetition mode in time domain of data carried on a first symbol in a first time domain resource unit, the first time domain resource unit including multiple first symbols, each first symbol being used for sensing and communication simultaneously.

[0097] It should be understood that, in the embodiments of the present application, the time length of one time domain resource unit can be any length. For example, one time domain resource unit can include one or more frames (perception frames), at least one communication symbol (i.e., a first symbol) in each frame is used for perception (i.e., at least one symbol is used for both perception and communication), or at least one symbol (i.e., at least one first symbol) in each frame carries communication data used for perception. For another example, one time domain resource unit can include one or more subframes, at least one communication symbol (i.e., a first symbol) in each subframe is used for perception. For another example, one time domain resource unit can include one or more slots, at least one communication symbol in each slot is used for perception. For another example, one time domain resource unit can include a plurality of symbols (e.g., orthogonal frequency division multiplexing (OFDM) symbols), at least one communication symbol in the plurality of symbols is used for perception.

[0098] In other words, the first symbol itself carries communication data (which can also be referred to as data or a communication signal), but the communication data (data or communication signal) carried on the first symbol can also be used for perception at the same time. Some of the symbols within the first time domain resource unit can be first symbols, or all of the symbols within the first time domain resource unit can be first symbols.

[0099] Optionally, the time length of one time domain resource unit can also be understood as the coherent processing time length. Within the coherent processing time, the sending end device (e.g., a base station) transmits the perception signal multiple times in the same beam direction, the receiving end device (e.g., a terminal device) receives the echo signal of the perception signal, and all the echo signals received within this time period are coherently accumulated to realize perception (e.g., ranging, speed measurement, etc.).

[0100] It should be understood that the first time domain resource unit can include a plurality of first symbols, which can be distributed at different time domain positions, and the plurality of first symbols can be discontinuous or continuous in the time domain. For example, the first time domain resource unit includes N slots in total, and the N slots include M first symbols in total, each slot can include one or more first symbols, or some of the N slots can include one or more first symbols, as long as the N slots include M first symbols in total.

[0101] For example, FIG. 8 shows a schematic diagram of one time domain resource unit. As shown in FIG. 8, one time domain resource unit includes 6 slots in time domain, which includes 4 downlink (D) slots, 1 uplink (U) slot, and 1 flexible slot. The flexible slot can include at least two of uplink symbol, downlink symbol, or reserved symbol, and the reserved symbol can be used for uplink communication or downlink communication. For downlink, the last three symbols (i.e., the first symbol) of each downlink slot can be used for sensing, i.e., the last three communication symbols of each downlink slot are used for both communication and sensing. That is, in the example shown in FIG. 8, the first symbol includes 12 symbols, which are the last three symbols of the four downlink slots, and the communication data carried on the 12 symbols is used for sensing. In other words, the communication data carried on the first symbol can be used for sensing.

[0102] Of course, FIG. 8 is only exemplary and should not limit the length of the time domain resource unit in the present application.

[0103] Optionally, in the embodiments of the present application, the repetition manner of the data carried on the first symbol in the first time domain resource unit in time domain can also be referred to as the repetition manner corresponding to the first time domain resource unit.

[0104] Optionally, in some possible implementation manners, the repetition manner of the data carried on the first symbol in the first time domain resource unit in time domain can be characterized by a repetition level and a repetition number.

[0105] The repetition level can be understood as the number of different data carried on the communication symbol (i.e., the first symbol) for sensing in the first time domain resource unit, or the number of different types of data carried on the communication symbol (i.e., the first symbol) for sensing in the first time domain resource unit. For example, assuming that there are 10 communication symbols for sensing in the first time domain resource unit, i.e., there are 10 first symbols, and the 10 communication symbols carry 4 different data, the repetition level of the data carried on the first symbol in the first time domain resource unit in time domain is 4.

[0106] Optionally, the repetition level of the data carried on the first symbol in the first time domain resource unit in time domain can also be referred to as the repetition level corresponding to the data carried on the first symbol in the first time domain resource unit or the repetition level corresponding to the first time domain resource unit. If not otherwise specified, the three have the same meaning and can be replaced with each other.

[0107] The repetition number can be understood as: the number of consecutive symbols occupied by the same data in the first symbol in the first time domain resource unit, or in other words, the number of consecutive symbols occupied by the same data in all first symbols. In other words, all first symbols in the first time domain resource unit can be extracted and arranged in the order of time domain. After arranging the first symbols in the order of time domain, the adjacent two symbols can be understood as "continuous". Of course, the real time domain resources (absolute time domain position) corresponding to the adjacent two symbols can not be continuous.

[0108] For example, assuming that a total of 10 communication symbols in the first time domain resource unit are used for sensing, i.e., there are a total of 10 first symbols, the 10 symbols are extracted and arranged in the order of time domain, and numbered 1 to 10. The 10 communication symbols carry a total of 2 different data, if the first data occupies symbols 1 to 5, and the second data occupies symbols 6 to 10, since the number of consecutive symbols occupied by the same data is 5 (symbols 1 to 5, symbols 6 to 10), the repetition number corresponding to the data carried on the first symbol in the first time domain resource unit is 5.

[0109] Alternatively, the repetition number of the data carried on the first symbol in the first time domain resource unit in the time domain can also be referred to as: the repetition number corresponding to the data carried on the first symbol in the first time domain resource unit or the repetition number corresponding to the first time domain resource unit. If there is no special description, the three meanings are the same and can be replaced with each other.

[0110] For example, the repetition level and repetition number corresponding to (i.e., the data carried on the first symbol in the time domain) the first time domain resource unit shown in FIG. 9 is shown in FIG. 9. The first time domain resource unit has a total of 28 communication symbols for sensing, i.e., there are a total of 28 first symbols, and the data carried by the 28 symbols is repeated according to the repetition level and the repetition number. For example, the repetition level is 4, i.e., the 28 symbols carry 4 different data. The repetition number is 1, i.e., the number of consecutive symbols occupied by the same data is 1. The repetition mode of the data carried by the 28 symbols (first symbols) in the first time domain resource unit can be as shown in FIG. 9.

[0111] For another example, FIG. 10 shows another example of the repetition level and the repetition number corresponding to the first time domain resource unit (i.e., the data carried on the first symbol in the time domain). In the first time domain resource unit, a total of 30 communication symbols are used for sensing, i.e., a total of 30 first symbols exist, and the data carried on the 30 symbols is repeated according to the repetition level and the repetition number. For example, the repetition level is 5, i.e., the 30 symbols carry 5 different data. The repetition number is 3, i.e., the number of consecutive symbols occupied by the same data is 3. The repetition manner of the data carried on the 30 symbols in the first time domain resource unit can be as shown in FIG. 10.

[0112] S720, the network device determines a repetition manner of data carried on a second symbol in a second time domain resource unit in the time domain, the second time domain resource unit includes a plurality of second symbols, each of the second symbols is used for sensing and communication at the same time, and the repetition manner of the data carried on the first symbol in the time domain is different from the repetition manner of the data carried on the second symbol in the time domain.

[0113] It should be understood that the second time domain resource unit and the first time domain resource unit are different time domain resource units, and the two do not overlap in the time domain. For example, the second time domain resource unit and the first time domain resource unit can be two adjacent time domain resource units, or can be two non-adjacent time domain resource units. The embodiments of the present application are not limited here.

[0114] The description of the length of the second time domain resource unit can refer to the description of the first time domain resource unit. Here, no longer be described.

[0115] The communication data carried on the second symbol in the second time domain resource unit is used for sensing, i.e., the sensing can be performed using the communication data carried on the second symbol.

[0116] Optionally, the length of the second time domain resource unit and the length of the first time domain resource unit can be the same or different.

[0117] Optionally, the number of second symbols included in the second time domain resource unit and the number of first symbols included in the first time domain resource unit can be the same or different.

[0118] In the present application, the repetition manner of the data carried on the first symbol in the first time domain resource unit in the time domain and the repetition manner of the data carried on the second symbol in the second time domain resource unit in the time domain are different.

[0119] Optionally, the repetition level number and the repetition number of the data carried on the second symbol in the second time domain resource unit in the time domain can also be referred to as: the repetition level number and the repetition number corresponding to the second time domain resource unit.

[0120] The description of the repetition level and the repetition number can refer to the above description, and will not be repeated here.

[0121] For example, FIG. 11 shows a schematic diagram of the repetition level and the repetition number corresponding to (i.e., in the time domain) the data carried on the second symbols in the second time domain resource unit.

[0122] As shown in FIG. 11, the second time domain resource unit has a total of 28 communication symbols for sensing, i.e., there are a total of 28 second symbols, and the data carried on the 28 symbols is repeated according to the repetition level and the repetition number. For example, the repetition level is 4, i.e., the 28 symbols carry 4 different data. The repetition number is 4, i.e., the number of consecutive symbols occupied by the same data is 4. The repetition mode of the data carried on the 28 symbols in the second time domain resource unit can be as shown in FIG. 11.

[0123] It should be understood that the data carried on the second symbols in the second time domain resource unit and the data carried on the first symbols in the first time domain resource unit are different. For example, the repetition level corresponding to the first time domain resource unit is 3, i.e., the multiple first symbols carry 3 different data, and the repetition level corresponding to the second time domain resource unit is also 3, i.e., the multiple second symbols carry 3 different data. However, the three data carried on the multiple first symbols of the first time domain resource unit and the three data carried on the multiple second symbols of the second time domain resource unit are different.

[0124] For another example, FIG. 12 shows another schematic diagram of the repetition level and the repetition number corresponding to (i.e., in the time domain) the data carried on the second symbols in the second time domain resource unit. The second time domain resource unit has a total of 15 communication symbols for sensing, i.e., there are a total of 15 second symbols, and the data carried on the 15 symbols is repeated according to the repetition level and the repetition number. For example, the repetition level is 3, i.e., the 15 symbols carry 3 different data. The repetition number is 1, i.e., the number of consecutive symbols occupied by the same data is 1. The repetition mode of the data carried on the 15 symbols in the second time domain resource unit can be as shown in FIG. 12.

[0125] It should be understood that, in the embodiments of the present application, the repetition mode of the data carried on the first symbols in the time domain and the repetition mode of the data carried on the second symbols in the time domain are different. For example, the repetition level corresponding to the first time domain resource unit and the second time domain resource unit is different, and the repetition number is the same; or the repetition level and the repetition number corresponding to the first time domain resource unit and the second time domain resource unit are different; or the repetition level corresponding to the first time domain resource unit and the second time domain resource unit is the same, and the repetition number is different.

[0126] Optionally, in some other possible implementation manners, the repetition manner of the data carried on the first time domain resource unit in the time domain and the repetition manner of the data carried on the second symbol in the second time domain resource unit in the time domain can also be represented by using only the repetition level, without using the repetition number.

[0127] For example, the first time domain resource unit and the second time domain resource unit correspond to different repetition levels respectively.

[0128] Optionally, in the embodiments of the present application, the repetition level corresponding to any one time domain resource unit can be an integer greater than or equal to 2. Since the repetition level is greater than or equal to 2, that is, the communication symbol for sensing in one time domain resource unit can carry or transmit multiple different data, in this case, when multiple time domain resource units are used for sensing, the communication efficiency can be ensured on the basis of improving the sensing performance.

[0129] If the repetition level corresponding to the time domain resource unit is 1, that is, the communication symbol for sensing in one time domain resource unit can carry or transmit the same kind of data, in this case, when multiple time domain resource units are used for sensing, the sensing performance can be improved.

[0130] Optionally, in the embodiments of the present application, if the repetition manner of the data carried on the first time domain resource unit in the time domain and the repetition manner of the data carried on the second symbol in the second time domain resource unit in the time domain are represented by using only the repetition level, in this case, the number and arrangement of the first symbols occupied by different data in the first time domain resource unit are not limited, and the number and arrangement of the second symbols occupied by different data in the second time domain resource unit are also not limited.

[0131] For example, the repetition level corresponding to the first time domain resource unit is 4, and the first time domain resource unit includes 10 first symbols, then as long as the 10 first symbols carry 4 different data, it is feasible that which or which first symbol carries which data, and there can be multiple different distribution manners.

[0132] S730, the network device sends indication information to the terminal device, the indication information being used to indicate the repetition manner of the data carried on the first symbol in the first time domain resource unit in the time domain and the repetition manner of the data carried on the second symbol in the second time domain resource unit in the time domain. Correspondingly, the terminal device receives the indication information.

[0133] It should be understood that, according to the indication information, the terminal device can determine the repetition manner of the data carried on the first symbol in the first time domain resource unit in the time domain and the repetition manner of the data carried on the second symbol in the second time domain resource unit in the time domain, that is, can determine the time domain pattern of the data carried on the first symbol and the time domain pattern of the data carried on the second symbol.

[0134] It should also be understood that the time-frequency resource positions corresponding to the first time domain resource unit and the second time domain resource unit are known in advance by the terminal device. For example, the first time domain resource unit and the second time domain resource unit can be pre-defined by a protocol, or can be indicated to the terminal device by the network device through signaling; or, can be pre-configured (or configured). The embodiments of the present application do not limit this.

[0135] As a possible implementation manner, the indication information can indicate the repetition level and the repetition number of the data carried on the first symbol in the first time domain resource unit in the time domain, and the repetition level and the repetition number of the data carried on the second symbol in the second time domain resource unit in the time domain.

[0136] As another possible implementation manner, the indication information can indicate the repetition level of the data carried on the first symbol in the first time domain resource unit in the time domain, and the repetition level of the data carried on the second symbol in the second time domain resource unit in the time domain.

[0137] Optionally, the repetition manner of the data carried on the first symbol in the first time domain resource unit in the time domain and the repetition manner of the data carried on the second symbol in the second time domain resource unit in the time domain can be indicated by the same indication information (the same signaling); or, can be indicated by one indication information (different signaling) respectively, and the embodiments of the present application do not limit this.

[0138] For example, the indication information can be carried in radio resource control (RRC) signaling, media access control (MAC) information, or downlink control information (DCI). Or, the indication information can be a newly added signaling or information, and the embodiments of the present application do not limit the specific carrying manner of the indication information.

[0139] Optionally, as a possible implementation, for a repetition level and a repetition number corresponding to a time domain resource unit, the network device can add a field (for example, a first field) indicating the repetition level and a field (for example, a second field) indicating the repetition number in the indication information. For example, the first field includes 2 bits, and different values of the 2 bits represent different repetition levels, for example, as shown in Table 1:

[0140] Table 1: Repetition level indication field

[0141] For example, the second field can also include 2 bits, and different values of the 2 bits represent different repetition numbers, for example, as shown in Table 2:

[0142] Table 2: Repetition number indication field

[0143] Optionally, as a possible implementation, if the repetition level is 2, in this case, since the repetition number can only be 1 or 2, in the case that the repetition level corresponding to a certain time domain resource unit is 2, the network device can also only notify the terminal device of the repetition number corresponding to the time domain resource.

[0144] For example, the repetition level corresponding to the certain time domain resource unit or the certain time domain resource units can be pre-defined by a protocol, or can be indicated to the terminal device by the network device through signaling, or can be pre-configured (or configured). The embodiments of the present application do not limit this.

[0145] It can be understood that the above S710 to S730 are optional steps, for example, in the case of network device single station sensing, the network device can directly perform S740 and S750.

[0146] S740, the network device transmits communication data to the terminal device on a symbol in the first time domain resource unit and transmits communication data to the terminal device on a symbol in the second time domain resource unit.

[0147] For example, the network device can transmit a communication signal (data signal) on a first symbol in the first time domain resource unit and transmit a communication signal (data symbol) on a second symbol in the second time domain resource unit.

[0148] Correspondingly, the terminal device receives the communication signal on the first time domain resource unit and the second time domain resource unit.

[0149] S750, the terminal device performs target sensing according to the communication data carried on the first symbol in the first time domain resource unit and the communication data carried on the second symbol in the second time domain resource unit.

[0150] For example, the terminal device can receive the echo signal reflected by the target to be sensed to the communication data carried on the first symbol, and receive the echo signal reflected by the target to be sensed to the communication data carried on the second symbol. The terminal device performs sensing on the target to be sensed according to the communication data carried on the first symbol, the echo signal corresponding to the communication data carried on the first symbol, the communication data carried on the second symbol, and the echo signal corresponding to the communication data carried on the second symbol.

[0151] It should be understood that the same repetition level and different repetition times are different in that if multiple base stations (for example, all base stations) transmit data according to the repetition level and the repetition times shown in FIG. 11 on the same time domain resource unit (for example, the first time domain resource unit), the terminal device will increase the interference level of all regions (that is, all regions on the sensing detection spectrum) when performing sensing detection. If all base stations transmit data according to the repetition level and the repetition times shown in FIG. 9 on the same time domain resource unit (for example, the second time domain resource unit), the terminal device will have a peak value in some four speed regions when performing sensing detection, and interference will only exist in these regions.

[0152] In this application, by configuring different repetition modes of communication data through different time domain resource units, the sensing gain of joint detection of multiple time domain resource units can be obtained.

[0153] For example, assuming that multiple base stations (for example, all base stations) transmit data according to the repetition level and the repetition times shown in FIG. 9 on the first time domain resource unit, and the interference peak value is concentrated in the regions of speeds 1 m / s, 3 m / s, 5 m / s, and 8 m / s, if the detection speed of the target to be detected is 5 m / s at this time, the target to be detected cannot be detected in the first time domain resource unit under this time domain pattern. If multiple base stations transmit data according to the repetition level and the repetition times shown in FIG. 11 on the second time domain resource unit, the interference level will be raised in the entire region corresponding to the second time domain resource unit, and the target to be detected can be detected. Similarly, the detection target that is not detected when the second time domain resource unit transmits data according to the repetition level and the repetition times shown in FIG. 11 can be detected in the non-interference region in the time domain pattern shown in FIG. 9. Therefore, by using different repetition modes (time domain patterns) in different time domain resource units, the interference influence (interference distribution) of other base stations on each time domain resource unit can be different or staggered, that is, the interference regions corresponding to each time domain resource unit are different, and the interference level can be reduced, and the performance of joint detection of multiple time domain resource units can be improved.

[0154] As a possible implementation manner, the first time domain resource unit and the second time domain resource unit correspond to the same repetition level and different repetition times, in which case, the accuracy of the terminal device detecting (sensing) the moving target can be improved.

[0155] As another possible implementation manner, the first time domain resource unit and the second time domain resource unit correspond to different repetition levels and the same or different repetition times, in which case, the communication performance can be ensured on the basis of obtaining the joint sensing gain of the multiple time domain resource units.

[0156] For example, the first time domain resource unit and the second time domain resource unit correspond to different repetition levels and the repetition times are both 1, in which case, the accuracy of the terminal device detecting (sensing) the stationary target can be improved.

[0157] For example, FIG. 13 shows a schematic diagram of the repetition manners corresponding to the first time domain resource unit and the second time domain resource unit, as shown in FIG. 13, the data carried on the first symbol in the first time domain resource unit corresponds to the repetition level of 4 and the repetition time of 1. The data carried on the second symbol in the second time domain resource unit corresponds to the repetition level of 2 and the repetition time of 2.

[0158] The method for data transmission provided in the embodiments of the present application can effectively reduce the interference generated by other devices, thereby improving the joint sensing performance of the multiple time domain resource units, in the scenario of sensing by using the communication symbols, by configuring the communication data for sensing in different time domain resource units into different repetition manners in the time domain, for example, different repetition levels and repetition times, so that the interference influence (interference distribution) generated by other devices (for example, other base stations or terminals) in different time domain resource units is different, that is, different time domain resource units have different interference distributions.

[0159] It should also be understood that, in the embodiments of the present application, for different transmitting end devices, that is, the devices transmitting the communication data on the symbols in the first time domain resource unit and the symbols in the second time domain resource unit, for example, any two network devices, all transmit the communication data on the first symbol in the first time domain resource unit and the second symbol in the second time domain resource unit according to the same repetition manner. For example, for the two network devices, the first network device transmits the communication data on the first symbol in the first time domain resource unit according to the first repetition manner and transmits the communication data on the second symbol in the second time domain resource unit according to the second repetition manner. Then, for the second network device, the communication data is also transmitted on the first symbol in the first time domain resource unit according to the first repetition manner and on the second symbol in the second time domain resource unit according to the second repetition manner, except that the communication data transmitted by different network devices is different.

[0160] In the above examples, the network device transmits the communication signal, and the terminal device receives the communication signal. Alternatively, in another possible implementation of the present disclosure, if the network device is composed of a CU, a DU, and an RU, in this case, in S730, if the indication information is transmitted to the terminal device through RRC signaling, the CU can transmit the RRC signaling carrying the indication information to the DU, the DU transmits the RRC signaling carrying the indication information to the RU, and finally the RU transmits the RRC signaling to the terminal device. If the indication information is transmitted to the terminal device through DCI or MAC signaling, the DU can transmit the DCI or MAC signaling carrying the indication information to the RU, and finally the RU transmits the DCI or MAC signaling to the terminal device.

[0161] For determining the repetition mode of the first symbol in the first time domain resource unit and the repetition mode of the second symbol in the second time domain resource unit in S710 and S720, the CU, the DU, or the RU can determine.

[0162] For S740: transmitting the communication data to the terminal device on the symbol in the first time domain resource unit, and transmitting the communication data to the terminal device on the symbol in the second time domain resource unit, the CU can transmit the communication data to the DU, the DU transmits the communication data to the RU after processing, and finally the RU transmits the communication data to the terminal device.

[0163] Alternatively, as a possible implementation, if the terminal device transmits the communication and sensing integrated signal, and the network device receives the communication and sensing integrated signal, the network device also needs to notify the terminal device of the repetition mode corresponding to the first time domain resource unit and the repetition mode corresponding to the second time domain resource unit. After the terminal device obtains the information, the terminal device can transmit the communication signal or the data symbol in the first time domain resource unit according to the repetition mode of the data carried on the first symbol in the time domain, and transmit the communication signal in the second time domain resource unit according to the repetition mode of the data carried on the second symbol in the time domain. The network device receives the communication signal and the echo signal in the first time domain resource unit and the second time domain resource unit, respectively, according to the repetition mode of the data carried on the first symbol in the time domain and the repetition mode of the data carried on the second symbol in the time domain, and performs sensing of the target to be sensed.

[0164] Optionally, as another possible implementation, if the first terminal device sends the communication and sensing integrated signal and the second terminal device receives the communication and sensing integrated signal, the network device also needs to inform the first terminal device and the second terminal device of the repetition mode of the data carried on the first symbol in the first time domain resource unit in the time domain and the repetition mode of the data carried on the second symbol in the second time domain resource unit in the time domain, and after the first terminal device obtains the information, the first terminal device can send the communication signal or the data symbol in the first time domain resource unit according to the repetition mode of the data carried on the first symbol in the first time domain resource unit, and send the communication signal in the second time domain resource unit according to the repetition mode of the data carried on the second symbol in the second time domain resource unit. The second terminal device receives the communication signal and the echo signal in the first time domain resource unit and the second time domain resource unit respectively according to the repetition mode of the data carried on the first symbol in the first time domain resource unit and the repetition mode of the data carried on the second symbol in the second time domain resource unit, and performs sensing on the target to be sensed.

[0165] Optionally, as another possible implementation, if the first network device sends the communication and sensing integrated signal and the second network device receives the communication and sensing integrated signal, the first network device also needs to inform the second network device of the repetition mode of the data carried on the first symbol in the first time domain resource unit in the time domain and the repetition mode of the data carried on the second symbol in the second time domain resource unit in the time domain, and the first network device sends the communication signal or the data symbol in the first time domain resource unit according to the repetition mode of the data carried on the first symbol in the first time domain resource unit, and sends the communication signal in the second time domain resource unit according to the repetition mode of the data carried on the second symbol in the second time domain resource unit. The second network device receives the communication signal and the echo signal in the first time domain resource unit and the second time domain resource unit respectively according to the repetition mode of the data carried on the first symbol in the first time domain resource unit and the repetition mode of the data carried on the second symbol in the second time domain resource unit, and performs sensing on the target to be sensed.

[0166] Optionally, as another possible implementation, if the first network device sends the communication and sensing integrated signal to other devices (e.g., other base stations or terminal devices), the first network device also receives the echo signal corresponding to the communication and sensing integrated signal, i.e., a single-station sensing scenario, the first network device can also send the communication signal or data symbol in the first time domain resource unit according to the repetition manner of the data carried on the first symbol in the time domain, and send the communication signal in the second time domain resource unit according to the repetition manner of the data carried on the second symbol in the time domain. The data carried on the first symbol and the data carried on the second symbol are data for communication between the first network device and the other devices. The first network device receives the echo signal corresponding to the communication data carried on the first symbol in the first time domain resource unit, and receives the echo signal corresponding to the communication data carried on the second symbol in the second time domain resource unit. The first network device performs sensing on the target to be sensed according to the communication data sent on the first symbol, the echo signal corresponding to the communication data carried on the first symbol, the communication data sent on the second symbol, and the echo signal corresponding to the communication data carried on the second symbol.

[0167] Optionally, as another possible implementation, if the first network device sends the communication and sensing integrated signal to other devices (e.g., other base stations or terminal devices), the first network device also receives the echo signal corresponding to the communication and sensing integrated signal, i.e., a single-station sensing scenario, the first network device can also send the communication signal or data symbol in the first time domain resource unit according to the repetition manner of the data carried on the first symbol in the time domain, and send the communication signal in the second time domain resource unit according to the repetition manner of the data carried on the second symbol in the time domain. The data carried on the first symbol and the data carried on the second symbol are data for communication between the first network device and the other devices. The first network device receives the echo signal corresponding to the communication data carried on the first symbol in the first time domain resource unit, and receives the echo signal corresponding to the communication data carried on the second symbol in the second time domain resource unit. The first network device performs sensing on the target to be sensed according to the communication data sent on the first symbol, the echo signal corresponding to the communication data carried on the first symbol, the communication data sent on the second symbol, and the echo signal corresponding to the communication data carried on the second symbol.

[0168] It should be understood that after the network device obtains the sensing result (e.g., the position, speed, etc. of the target to be sensed), the terminal device receives the communication signal and the echo signal, processes the echo signal to obtain the sensing result, and notifies the network device; or after the network device obtains the sensing result by using the self-sensing and self-receiving mode, the network device can also send the sensing result to the core network device for further processing. Alternatively, the network device can also feed back the intermediate result (sensing energy spectrum) of the processing of the sensing signal to the core network device for processing to finally obtain the sensing result.

[0169] It should be understood that the above is only to help those skilled in the art better understand the embodiments of the present application, and is not intended to limit the scope of the embodiments of the present application. Those skilled in the art can obviously make various equivalent modifications or changes according to the above examples given, for example, some steps in the above method embodiments can not be necessary, or some steps can be newly added, etc. Or a combination of any two or more embodiments. Such modifications, changes or combinations also fall within the scope of the embodiments of the present application.

[0170] It should also be understood that the division of the modes, cases, categories and embodiments in the embodiments of the present application is only for the convenience of description, and should not constitute a special limitation. The features in various modes, categories, cases and embodiments can be combined without contradiction.

[0171] It should also be understood that the various numerical designations involved in the embodiments of the present application are only for the convenience of differentiation, and are not intended to limit the scope of the embodiments of the present application. The size of the serial number of the above processes does not mean the order of execution, and the execution order of the processes should be determined by its function and inherent logic, and should not constitute any limitation on the implementation process of the embodiments of the present application.

[0172] It should also be understood that the above description of the embodiments of the present application focuses on the differences between the various embodiments, and the same or similar parts not mentioned can be referred to each other. For the sake of brevity, they will not be repeated here.

[0173] The above describes the method of the embodiments of the present application in detail in combination with FIG. 1 to FIG. 13. In the following, the communication device of the embodiments of the present application is described in detail in combination with FIG. 14 to FIG. 19.

[0174] The embodiments can divide the terminal device and the network device into functional modules according to the above method. For example, each function can be divided into a functional module, or two or more functions can be integrated into a processing module. The integrated module can be realized in the form of hardware. It should be noted that the division of the modules in the embodiments is illustrative, and is only a logical function division. In actual implementation, there can be another division manner.

[0175] It should be noted that the related content of each step involved in the above method embodiments can be cited to the function description of the corresponding function module, and will not be repeated here.

[0176] The terminal device and the network device provided by the embodiments of the present application are used to execute any one of the data transmission methods provided by the above method embodiments, so as to achieve the same effect as the above implementation method. In the case of integrated units, the terminal device or the network device can include a processing module, and optionally a storage module and a communication module. Among them, the processing module can be used to control and manage the actions of the terminal device or the network device. For example, it can be used to support the terminal device or the network device to execute the steps executed by the processing unit. The storage module can be used to support the storage of program code and data, etc. The communication module can be used to support the communication of the terminal device or the network device with other devices.

[0177] Among them, the processing module can be a processor or a controller. It can realize or execute various exemplary logic blocks, modules and circuits described in combination with the disclosure of the present application. The processor can also be a combination of computing functions, such as one or more microprocessor combinations, digital signal processing (digital signal processing, DSP) and microprocessor combinations, etc. The storage module can be a memory. The communication module can be a radio frequency circuit, a Bluetooth chip, and other devices that interact with other electronic devices.

[0178] For example, FIG. 14 shows a schematic block diagram of a communication device 1400 of an embodiment of the present application. The communication device 1400 can correspond to the network device described in each method embodiment, or it can be a chip or component applied to the network device, and each module or unit in the communication device 1400 is used to execute the actions or processing processes performed by the network device in each method embodiment.

[0179] As shown in FIG. 14, the communication device 1400 can include a processing unit 1410 and a transceiver unit 1420. The transceiver unit 1420 is used to perform specific signal transceiving under the control of the processing unit 1410. The processing unit can also be referred to as a processing module, and the transceiver unit can also be referred to as a communication unit or a communication module.

[0180] The transceiver unit 1420 is configured to: transmit communication data on a symbol in a first time domain resource unit, the first time domain resource unit including a plurality of first symbols, and the communication data carried on each first symbol being used for sensing at the same time;

[0181] The transceiver 1420 is further configured to transmit communication data on symbols within a second time domain resource unit, the second time domain resource unit including a plurality of second symbols, each second symbol carrying communication data that is simultaneously used for sensing.

[0182] The repetition manner of the data carried on the plurality of first symbols in the time domain is different from the repetition manner of the data carried on the plurality of second symbols in the time domain, and the first time domain resource unit and the second time domain resource unit do not overlap in the time domain.

[0183] The communication apparatus provided by the embodiments of the present application. In the scenario of sensing by using communication symbols, for a plurality of different time domain resource units, the communication data used for sensing in different time domain resource units is configured in different repetition manners in the time domain, so that the interference influence (interference distribution) generated by other devices (for example, other base stations or terminals) in different time domain resource units is different, that is, different time domain resource units have different interference distributions, which can effectively reduce the interference influence generated by other devices, thereby improving the joint sensing performance of the plurality of time domain resource units.

[0184] In some possible implementation manners, the repetition manner of the data carried on the plurality of first symbols in the time domain includes a first repetition level and a first repetition number, the repetition manner of the data carried on the plurality of second symbols in the time domain includes a second repetition level and a second repetition number, the first repetition level indicates a number of different data carried on the plurality of first symbols, the first repetition number indicates a number of consecutive symbols occupied by the same data in the plurality of first symbols, the second repetition level indicates a number of different data carried on the plurality of second symbols, and the second repetition number indicates a number of consecutive appearances of the same data in the plurality of second symbols.

[0185] In some possible implementation manners, the first repetition level and the second repetition level are different, and the first repetition number and the second repetition number are the same or different.

[0186] In some possible implementation manners, the first repetition level and the second repetition level are the same, and the first repetition number and the second repetition number are different.

[0187] In some possible implementation manners, the transceiver 1420 is further configured to transmit indication information, the indication information being used to indicate the repetition manner of the data carried on the plurality of first symbols in the time domain and the repetition manner of the data carried on the plurality of second symbols in the time domain.

[0188] In a possible implementation, the transceiver 1420 is further configured to receive the echo signal corresponding to the communication data carried on the first symbol, and receive the echo signal corresponding to the communication data carried on the second symbol. The processing unit 1410 is configured to perceive the target to be perceived according to the communication data sent on the first symbol, the echo signal corresponding to the communication data carried on the first symbol, the communication data sent on the second symbol, and the echo signal corresponding to the communication data carried on the second symbol.

[0189] In a possible implementation, the first time domain resource unit or the second time domain resource unit includes one or more frames, one or more subframes, one or more slots, or multiple symbols.

[0190] It should be understood that the specific process by which each unit in the communication apparatus 1400 performs the corresponding steps described above can refer to the description of the network device related to the above-mentioned various method related embodiments. For the sake of brevity, it will not be repeated here.

[0191] Optionally, the transceiver 1420 can include a receiving unit (module) and a sending unit (module) configured to perform the steps of receiving information and sending information by the network device in the embodiments described in the foregoing method 700.

[0192] Further, the communication apparatus 1400 can further include a storage unit. The transceiver 1420 can be a transceiver, an input / output interface, or an interface circuit. The storage unit is configured to store instructions executed by the transceiver 1420 and the processing unit 1410. The transceiver 1420, the processing unit 1410, and the storage unit are coupled to each other. The storage unit stores instructions, the processing unit 1410 is configured to execute the instructions stored in the storage unit, and the transceiver 1420 is configured to perform specific signal transceiving under the control of the processing unit 1410.

[0193] It should be understood that the transceiver 1420 can be a transceiver, an input / output interface, or an interface circuit. The storage unit can be a memory. The processing unit 1410 can be implemented by a processor. As shown in FIG. 15, the communication apparatus 1500 can include a processor 1510, a memory 1520, and a transceiver 1530.

[0194] The communication apparatus 1400 shown in FIG. 14 or the communication apparatus 1500 shown in FIG. 15 can implement the steps performed by the network device in the foregoing various method embodiments. Similar descriptions can be referred to the descriptions in the corresponding methods described above. To avoid repetition, it will not be repeated here.

[0195] It should also be understood that the communication apparatus 1400 shown in FIG. 14 or the communication apparatus 1500 shown in FIG. 15 can be a network device, or the network device can include the communication apparatus 1400 shown in FIG. 14 or the communication apparatus 1500 shown in FIG. 15.

[0196] Exemplarily, FIG. 16 shows a schematic block diagram of a communication apparatus 1600 of an embodiment of the present application, which can correspond to the terminal device described in the above various method embodiments, or can be a chip or component applied to the terminal device, and each module or unit in the communication apparatus 1600 is respectively configured to perform each action or process performed by the terminal device in the above various method embodiments.

[0197] As shown in FIG. 16, the communication apparatus 1600 includes a transceiver unit 1610 and a processing unit 1620. The transceiver unit 1610 is configured to perform specific signal transceiving under the control of the processing unit 1620.

[0198] The transceiver unit 1610 is configured to receive communication data on symbols within a first time domain resource unit, the first time domain resource unit including a plurality of first symbols, and the communication data carried on each first symbol being simultaneously used for sensing.

[0199] The transceiver unit 1610 is further configured to receive communication data on symbols within a second time domain resource unit, the second time domain resource unit including a plurality of second symbols, and the communication data carried on each second symbol being simultaneously used for sensing, the repeating manner of the data carried on the plurality of first symbols in the time domain being different from the repeating manner of the data carried on the plurality of second symbols in the time domain, and the first time domain resource unit and the second time domain resource unit not overlapping in the time domain.

[0200] The processing unit 1620 is configured to perform sensing on a target to be sensed according to the communication data carried on the first symbols, the echo signal corresponding to the communication data carried on the first symbols, the communication data carried on the second symbols, and the echo signal corresponding to the communication data carried on the second symbols.

[0201] The communication apparatus provided by the embodiments of the present application. In the scenario of sensing by using communication symbols, for a plurality of different time domain resource units, the repeating manner of the communication data used for sensing in different time domain resource units in the time domain is different, so that the interference influence (interference distribution) generated by other devices (such as other base stations or terminals) in different time domain resource units is different, that is, different time domain resource units have different interference distributions, and when the communication apparatus performs sensing on a target to be sensed by using the communication data in these time domain resource units, the interference influence generated by other devices can be effectively reduced, thereby improving the joint sensing performance of the plurality of time domain resource units.

[0202] In some possible implementation manners, the repetition manner of the data carried on the plurality of first symbols in the time domain includes a first repetition level and a first repetition number, the repetition manner of the data carried on the plurality of second symbols in the time domain includes a second repetition level and a second repetition number, the first repetition level indicates a number of different data carried on the plurality of first symbols, the first repetition number indicates a number of continuous symbols occupied by the same data in the plurality of first symbols, the second repetition level indicates a number of different data carried on the plurality of second symbols, and the second repetition number indicates a number of times of continuous occurrence of the same data in the plurality of second symbols.

[0203] In some possible implementation manners, the first repetition level and the second repetition level are different, and the first repetition number and the second repetition number are the same or different.

[0204] In some possible implementation manners, the first repetition level and the second repetition level are the same, and the first repetition number and the second repetition number are different.

[0205] In some possible implementation manners, the transceiver 1610 is further configured to receive indication information, where the indication information is used to indicate the repetition manner of the data carried on the plurality of first symbols in the time domain and the repetition manner of the data carried on the plurality of second symbols in the time domain.

[0206] Further, the communication apparatus 1600 can further include a storage unit, and the transceiver 1610 can be a transceiver, an input / output interface, or an interface circuit. The storage unit is configured to store instructions executed by the transceiver 1610 and the processing unit 1620. The transceiver 1610, the processing unit 1620, and the storage unit are coupled to each other. The storage unit stores instructions, the processing unit 1620 is configured to execute the instructions stored in the storage unit, and the transceiver 1610 is configured to perform specific signal transceiving under control of the processing unit 1620.

[0207] It should be understood that specific processes by which the units in the communication apparatus 1600 perform the corresponding steps described above can refer to the related descriptions of the terminal device in the foregoing method-related embodiments, which will not be repeated here for brevity.

[0208] It should be understood that the transceiver 1610 can be a transceiver, an input / output interface, or an interface circuit. The storage unit can be a memory. The processing unit 1620 can be implemented by a processor.

[0209] As shown in FIG. 17, the communication apparatus 1700 can include a processor 1710, a memory 1720, a transceiver 1730, and a bus system 1740, for example. The various components of the communication apparatus 1700 are coupled each other through the bus system 1740, which can include, in addition to a data bus, a power bus, a control bus, and a state signal bus, etc. However, for the sake of clarity, all the buses are labeled as the bus system 1740 in FIG. 17. Only schematic representation is shown in FIG. 17.

[0210] The communication apparatus 1600 shown in FIG. 16 or the communication apparatus 1700 shown in FIG. 17 can implement the steps performed by the terminal device in each of the above-mentioned method embodiments. Similar descriptions can be referred to the descriptions in the corresponding methods. To avoid repetition, no further description is given here.

[0211] It should also be understood that the communication apparatus 1600 shown in FIG. 16 or the communication apparatus 1700 shown in FIG. 17 can be the terminal device, or the terminal device can include the communication apparatus 1600 shown in FIG. 16 or the communication apparatus 1700 shown in FIG. 17.

[0212] It should also be understood that the division of the units in the above apparatus is only a logical functional division, and all or part of them can be integrated into one physical entity, or can be physically separated. The units in the apparatus can all be implemented in the form of software invoked by a processing element; or all be implemented in the form of hardware; or some units are implemented in the form of software invoked by a processing element, and some units are implemented in the form of hardware. For example, each unit can be a separately established processing element, or can be integrated into a chip of the apparatus, and in addition, can be stored in the form of a program in the memory, and the function of the unit is invoked and executed by a processing element of the apparatus. The processing element can also be referred to as a processor, which can be an integrated circuit with signal processing capability. In the implementation process, each step of the above method or each unit can be implemented by an integrated logic circuit of hardware in the processing element, or in the form of software invoked by the processing element.

[0213] In one example, the units in any of the above apparatuses can be one or more integrated circuits, configured to implement one or more of the above methods, e.g., one or more application specific integrated circuits (ASICs), or, one or more DSPs, or, one or more field programmable gate arrays (FPGAs), or a combination of at least two of these integrated circuit forms. In another example, when the units in the apparatuses can be implemented by means of a processor scheduler, the processor can be a general processor, e.g., a central processing unit (CPU) or other processor capable of invoking a program. In yet another example, the units can be integrated together, e.g., in a system-on-a-chip (SOC) form.

[0214] FIG. 18 is a schematic diagram of a structure of a terminal device 1800 provided in the present disclosure. The communication apparatus 1600 or the communication apparatus 1700 can be configured in the terminal device 1800. Alternatively, the communication apparatus 1600 or the communication apparatus 1700 can be the terminal device 1800 itself. Alternatively, the terminal device 1800 can perform the actions performed by the terminal device in each of the above method embodiments. Optionally, for ease of illustration, FIG. 18 only shows the main components of the terminal device. As shown in FIG. 18, the terminal device 1800 includes a processor, a memory, a control circuit, an antenna, and an input / output device.

[0215] The processor is mainly used for processing communication protocols and communication data, and controlling the whole terminal device, executing software programs, processing data of the software programs, e.g., for supporting the terminal device to perform the actions described in the above method embodiments of data transmission. The memory is mainly used for storing software programs and data, e.g., storing the different time domain resource units respectively corresponding to the repetition manners, the communication symbols respectively used for sensing in the different time domain resource units, and the time-frequency resources respectively corresponding to the different time domain resource units, described in the above embodiments. The control circuit is mainly used for converting baseband signals and radio frequency signals, and processing the radio frequency signals. The control circuit and the antenna together can also be called a transceiver, which is mainly used for transceiving radio frequency signals in the form of electromagnetic waves, e.g., transmitting communication data respectively on the symbols in the different time domain resource units for sensing. The input / output device, e.g., a touch screen, a display screen, a keyboard, etc., is mainly used for receiving user input data and outputting data to the user.

[0216] When the terminal device is powered on, the processor can read the software program in the storage unit, interpret and execute the instructions of the software program, and process the data of the software program. When data needs to be sent wirelessly, the processor performs baseband processing on the data to be sent, and outputs the baseband signal to the radio frequency circuit. The radio frequency circuit converts the baseband signal into a radio frequency signal, and sends the radio frequency signal in the form of an electromagnetic wave through the antenna. When signaling (such as the above-mentioned indication information, communication data on symbols in different time domain resource units, etc.) is sent to the terminal device, the radio frequency circuit receives the radio frequency signal through the antenna, converts the radio frequency signal into a baseband signal, and outputs the baseband signal to the processor. The processor converts the baseband signal into data and processes the data.

[0217] Those skilled in the art can understand that, for the sake of illustration, FIG. 18 only shows one memory and one processor. In an actual terminal device, there can be multiple processors and memories. The memory can also be referred to as a storage medium or a storage device, etc., and the embodiments of the present application do not limit this.

[0218] For example, the processor can include a baseband processor and a central processor. The baseband processor is mainly used for processing communication protocols and communication data. The central processor is mainly used for controlling the entire terminal device, executing software programs, and processing data of the software programs. The processor in FIG. 18 integrates the functions of the baseband processor and the central processor. Those skilled in the art can understand that the baseband processor and the central processor can also be independent processors interconnected through a bus or the like. Those skilled in the art can understand that the terminal device can include multiple baseband processors to adapt to different network standards, and the terminal device can include multiple central processors to enhance its processing capability. The various components of the terminal device can be connected through various buses. The baseband processor can also be referred to as a baseband processing circuit or a baseband processing chip. The central processor can also be referred to as a central processing circuit or a central processing chip. The function of processing communication protocols and communication data can be built into the processor, or can be stored in the storage unit in the form of a software program, and the processor executes the software program to realize the baseband processing function.

[0219] Exemplarily, in the embodiments of the present application, the antenna and the control circuit with transceiving function can be regarded as a transceiving unit 1801 of the terminal device 1800, and the processor with processing function can be regarded as a processing unit 1802 of the terminal device 1800. As shown in FIG. 18, the terminal device 1800 includes the transceiving unit 1801 and the processing unit 1802. The transceiving unit can also be referred to as a transceiver, a transceiver unit, or the like. Optionally, the device for realizing the receiving function in the transceiving unit 1801 can be regarded as a receiving unit, and the device for realizing the sending function in the transceiving unit 1801 can be regarded as a sending unit, that is, the transceiving unit 1801 includes the receiving unit and the sending unit. Exemplarily, the receiving unit can also be referred to as a receiver, a receiving circuit, or the like, and the sending unit can be referred to as a transmitter, a sending circuit, or the like.

[0220] FIG. 19 is a structural schematic diagram of a network device 1900 provided by an embodiment of the present application, which can be used to realize the function of the network device in the above method. The network device 1900 includes one or more radio frequency units, such as a remote radio unit (RRU) 1901 and one or more baseband units (BBU) (also referred to as a digital unit, DU) 1902. The RRU 1901 can be referred to as a transceiving unit, a transceiver, a transceiving circuit, or a transceiver, etc., which can include at least one antenna 19011 and a radio frequency unit 19012. The RRU 1901 is mainly used for transceiving radio frequency signals and converting radio frequency signals and baseband signals, for example, for sending the indication information in the above embodiments to the terminal device. The BBU 1902 is mainly used for baseband processing, controlling the base station, etc. The RRU 1901 and the BBU 1902 can be physically arranged together or physically arranged separately, that is, a distributed base station.

[0221] The BBU 1902 is the control center of the base station, and can also be referred to as a processing unit, which is mainly used to complete the baseband processing function, such as channel coding, multiplexing, modulation, spreading, etc. For example, the BBU (processing unit) 1902 can be used to control the base station to perform the operation process of the network device in the above method embodiments.

[0222] In one example, the BBU 1902 can be composed of one or more single boards, and the multiple single boards can jointly support a wireless access network of a single access system (such as an LTE system or a 5G system) or separately support wireless access networks of different access systems. The BBU 1902 further includes a memory 19021 and a processor 19022. The memory 19021 is configured to store necessary instructions and data. For example, the memory 19021 stores the repetition manners corresponding to different time-domain resource units, the communication symbols for sensing in different time-domain resource units, and the time-frequency resources corresponding to different time-domain resource units, in the above-described embodiments. The processor 19022 is configured to control the base station to perform necessary actions, for example, to control the base station to perform the operation procedures of the network device in the above-described method embodiments. The memory 19021 and the processor 19022 can serve one or more single boards. That is, the memory and the processor can be separately arranged on each single board. Alternatively, the memory and the processor can be shared by multiple single boards. In addition, necessary circuits can be further arranged on each single board.

[0223] In a possible implementation, with the development of system-on-chip (SoC) technology, all or part of the functions of the 1902 part and the 1901 part can be implemented by SoC technology, for example, by a base station function chip that integrates a processor, a memory, an antenna interface, and the like. The program of the base station related function is stored in the memory, and the processor executes the program to implement the related function of the base station. Alternatively, the base station function chip can also read the memory outside the chip to implement the related function of the base station.

[0224] It should be understood that the structure of the network device in the example of FIG. 19 is only one possible form, and should not constitute any limitation on the embodiments of the present application. The present application does not exclude the possibility of other forms of base station structures that may appear in the future.

[0225] It should be understood that, in the embodiments of the present application, the processor can be a central processing unit (CPU), and the processor can also be other general-purpose processors, digital signal processors (DSPs), application specific integrated circuits (ASICs), field programmable gate arrays (FPGAs) or other programmable logic devices, discrete gates or transistor logic devices, discrete hardware components, etc. The general-purpose processor can be a microprocessor or the processor can also be any conventional processor.

[0226] It should also be understood that the memory in the embodiments of the present application can be a volatile memory or a non-volatile memory, or can include both volatile and non-volatile memories. Among them, the non-volatile memory can be a read-only memory (ROM), a programmable read-only memory (PROM), an EPROM, an electrically EPROM (EEPROM) or a flash memory. The volatile memory can be a random access memory (RAM) used as an external cache. By way of example but not limitation, many forms of RAM are available, such as static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double data rate SDRAM (DDR SDRAM), enhanced SDRAM (ESDRAM), synchlink DRAM (SLDRAM) and direct rambus RAM (DR RAM).

[0227] The embodiments of the present application also provide a communication system, which includes the terminal device and the network device described above. Alternatively, the first network device and the second network device, or the first terminal device and the second terminal device, etc.

[0228] The above embodiments can be realized all or partially by software, hardware, firmware or any combination thereof. When realized by software, the above embodiments can be realized all or partially in the form of a computer program product. The computer program product includes one or more computer instructions or computer programs. When loaded or executed on a computer, the computer instructions or computer programs all or partially produce the processes or functions according to the embodiments of the present application. The computer can be a general-purpose computer, a special-purpose computer, a computer network or other programmable device. The computer instructions can be stored in a computer readable storage medium or transmitted from one computer readable storage medium to another, for example, the computer instructions can be transmitted from one website, computer, server or data center to another website, computer, server or data center through wired (such as infrared, wireless, microwave, etc.) or wireless means.

[0229] The embodiment of the present application further provides a computer readable medium for storing computer program codes, the computer program codes comprising instructions for executing any of the data transmission methods provided by the above-mentioned embodiments of the present application. The readable medium can be the memory of the above-mentioned examples, and the embodiment of the present application does not limit this.

[0230] The present application further provides a computer program product comprising instructions which, when executed by a terminal device, cause the terminal device to perform operations corresponding to those of the terminal device in the above-mentioned methods, or which, when executed by a network device, cause the network device to perform operations corresponding to those of the network device in the above-mentioned methods.

[0231] The embodiment of the present application further provides a chip comprising a processing unit, for example, a processor, and a communication unit, for example, an input / output interface, a pin, a circuit, etc. The processing unit can execute computer instructions to cause the chip in the communication device to perform any of the data transmission methods provided by the above-mentioned embodiments of the present application.

[0232] Optionally, any of the communication devices provided in the above-mentioned embodiments of the present application can comprise the chip.

[0233] Optionally, the computer instructions are stored in a storage unit.

[0234] Optionally, the storage unit is a storage unit in the chip, such as a register, a cache, etc. The storage unit can also be a storage unit outside the chip in the communication device, such as a ROM or other type of static storage device that can store static information and instructions, a RAM, etc. The processor mentioned in any of the above can be a CPU, a microprocessor, an ASIC, or one or more integrated circuits for executing programs for controlling the above-mentioned information processing methods. The processing unit and the storage unit can be decoupled and arranged on different physical devices, connected through wired or wireless means to realize the respective functions of the processing unit and the storage unit to support the chip to realize various functions in the above-mentioned embodiments. Alternatively, the processing unit and the storage unit can be coupled on the same device.

[0235] The processor mentioned in any of the above can be a CPU, a microprocessor, an ASIC, or one or more integrated circuits for executing programs for controlling the above-mentioned information processing methods. The processing unit and the storage unit can be decoupled and arranged on different physical devices, connected through wired or wireless means to realize the respective functions of the processing unit and the storage unit to support the chip to realize various functions in the above-mentioned embodiments. Alternatively, the processing unit and the storage unit can be coupled on the same device.

[0236] Various objects in the present application are named, which can be understood that these specific names do not constitute a limitation on the related objects, and the names can be changed according to the scene, context or use habits, etc. The technical meaning of the technical terms in the present application should be mainly determined according to the function and technical effect embodied / implemented in the technical scheme.

[0237] Those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working process of the above-described system, device and unit can refer to the corresponding process in the foregoing method embodiments, which will not be repeated here.

[0238] In several embodiments provided in the present application, it should be understood that the disclosed system, device and method can be implemented by other ways. For example, the above-described device embodiments are only schematic, for example, the division of the unit is only a logical function division, and actual implementation can have another division manner, for example, a plurality of units or components can be combined or integrated into another system, or some features can be ignored or not executed. In addition, the coupling or direct coupling or communication connection between the shown or discussed mutual units can be indirect coupling or communication connection through some interfaces, devices or units, which can be electrical, mechanical or other forms.

[0239] The units described as separate components can or can not be physically separate, and the components shown as units can or can not be physical units, that is, they can be located in one place, or can be distributed on a plurality of network units. Part or all of the units can be selected according to actual needs to achieve the purpose of the present embodiment.

[0240] In addition, each functional unit in each embodiment of the present application can be integrated in one processing unit, or each unit can be physically present separately, or two or more units can be integrated in one unit.

[0241] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited to this, any person skilled in the art can easily think of changes or replacements within the technical scope disclosed in the present application, which should be covered in the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A method for data transmission, characterized in that, The method includes: Communication data is transmitted on symbols within a first time-domain resource unit, the first time-domain resource unit comprising a plurality of first symbols, and the communication data carried on each first symbol is also used for sensing. Communication data is transmitted on symbols within a second time-domain resource unit, which includes multiple second symbols, each of which carries communication data that is also used for sensing. The data carried on the plurality of first symbols repeats in the time domain in a different way than the data carried on the plurality of second symbols, and the first time domain resource unit and the second time domain resource unit do not overlap in the time domain.

2. The method according to claim 1, characterized in that, The repetition of data carried on the plurality of first symbols in the time domain includes a first repetition level and a first repetition number. The repetition of data carried on the plurality of second symbols in the time domain includes a second repetition level and a second repetition number. The first repetition level indicates the number of different data carried by the plurality of first symbols. The first repetition number indicates the number of consecutive symbols occupied by the same type of data in the plurality of first symbols. The second repetition level indicates the number of different data carried by the plurality of second symbols. The second repetition number indicates the number of consecutive occurrences of symbols occupied by the same type of data in the plurality of second symbols.

3. The method according to claim 2, characterized in that, The first repetition level and the second repetition level are different, and the first repetition number and the second repetition number are the same or different.

4. The method according to claim 2, characterized in that, The first repetition level and the second repetition level are the same, but the first repetition number and the second repetition number are different.

5. The method according to any one of claims 1 to 4, characterized in that, The method further includes: Send indication information, which is used to indicate the repeating method of the data carried on the plurality of first symbols in the time domain and the repeating method of the data carried on the plurality of second symbols in the time domain.

6. The method according to any one of claims 1 to 4, characterized in that, The method further includes: Receive the echo signal corresponding to the communication data carried on the first symbol; Receive the echo signal corresponding to the communication data carried on the second symbol; The target to be sensed is perceived based on the communication data transmitted on the first symbol, the echo signal corresponding to the communication data carried on the first symbol, the communication data transmitted on the second symbol, and the echo signal corresponding to the communication data carried on the second symbol.

7. The method according to any one of claims 1 to 6, characterized in that, The first time-domain resource unit or the second time-domain resource unit includes: one or more frames, one or more subframes, one or more time slots, or multiple symbols.

8. A method for data transmission, characterized in that, The method includes: Communication data is received on symbols within a first time-domain resource unit, the first time-domain resource unit comprising a plurality of first symbols, and the communication data carried on each first symbol is also used for sensing. Communication data is received on symbols within a second time-domain resource unit. The second time-domain resource unit includes multiple second symbols. The communication data carried on each second symbol is also used for sensing. The repetition pattern of the data carried on the multiple first symbols in the time domain is different from the repetition pattern of the data carried on the multiple second symbols in the time domain. The first time-domain resource unit and the second time-domain resource unit do not overlap in the time domain. The target to be perceived is perceived based on the communication data carried on the first symbol, the echo signal corresponding to the communication data carried on the first symbol, the communication data carried on the second symbol, and the echo signal corresponding to the communication data carried on the second symbol.

9. The method according to claim 8, characterized in that, The repetition of data carried on the plurality of first symbols in the time domain includes a first repetition level and a first repetition number. The repetition of data carried on the plurality of second symbols in the time domain includes a second repetition level and a second repetition number. The first repetition level indicates the number of different data carried by the plurality of first symbols. The first repetition number indicates the number of consecutive symbols occupied by the same type of data in the plurality of first symbols. The second repetition level indicates the number of different data carried by the plurality of second symbols. The second repetition number indicates the number of consecutive occurrences of symbols occupied by the same type of data in the plurality of second symbols.

10. The method according to claim 9, characterized in that, The first repetition level and the second repetition level are different, and the first repetition number and the second repetition number are the same or different.

11. The method according to claim 9, characterized in that, The first repetition level and the second repetition level are the same, but the first repetition number and the second repetition number are different.

12. The method according to any one of claims 8 to 11, characterized in that, The method further includes: Receive indication information, the indication information being used to indicate the repeating method in the time domain of the data carried on the plurality of first symbols and the repeating method in the time domain of the data carried on the plurality of second symbols.

13. A communication device, characterized in that, include: A unit for performing the steps of the method as described in any one of claims 1 to 7, or a unit for performing the steps of the method as described in any one of claims 8 to 12.

14. A communication device, characterized in that, It includes at least one processor and interface circuitry, the at least one processor being configured to perform: the method as described in any one of claims 1 to 7, or the method as described in any one of claims 8 to 12.

15. A communication device, characterized in that, include: A processor coupled to a memory for storing a program or instructions which, when executed by the processor, cause the apparatus to perform: the method as claimed in any one of claims 1 to 7, or the method as claimed in any one of claims 8 to 12.

16. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores a computer program, the computer program including program instructions that, when executed by a processor, cause the processor to perform: the method as claimed in any one of claims 1 to 7, or the method as claimed in any one of claims 8 to 12.

17. A chip, characterized in that, Includes: a processor for retrieving and running a computer program from memory, causing a communication device on which the chip is mounted to perform: the method as claimed in any one of claims 1 to 7, or the method as claimed in any one of claims 8 to 12.

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