Method performed by first node in wireless communication system and first node

Abstract

The present disclosure relates to a 5G communication system or a 6G communication system for supporting higher data rates beyond 4G communication systems such as Long Term Evolution (LTE). Specifically, the embodiment of the invention provides a method executed by a first node in a wireless communication system and the first node, the method provides a new signal generation scheme, the method comprises the following steps: acquiring configuration information, the configuration information comprising information related to a data modulation mode; a first angle related to data modulation is determined based on the configuration information, and a baseband signal is generated based on the first angle.

Description

Technical Field

[0001] The present disclosure relates to the field of wireless communication technologies, and more particularly, to a method performed by a first node in a communication system and the first node. Background Art

[0002] Considering the development of wireless communication from generation to generation, these technologies have mainly been developed for human-targeted services such as voice calls, multimedia services, and data services. With the commercialization of the fifth-generation (5G) communication system, it is expected that the number of connected devices will increase exponentially. These will be increasingly connected to the communication network. Examples of the Internet of Things can include vehicles, robots, drones, household appliances, displays, smart sensors connected to various infrastructures, construction machinery, and factory equipment. Mobile devices are expected to evolve in various forms such as augmented reality glasses, virtual reality headsets, and holographic devices. Efforts have been made to develop improved 6G communication systems in order to provide various services by connecting hundreds of billions of devices and things in the sixth-generation (6G) era. For these reasons, the 6G communication system is called the ultra-5G system.

[0003] The 6G communication system, which is expected to be commercialized around 2030, will have a peak data rate of tera (1,000 giga) - level bps and a radio latency of less than 100 μsec, and thus will be 50 times the data rate of the 5G communication system and have 1 / 10 of its radio latency.

[0004] To achieve such high data rates and ultra-low latency, implementing 6G communication systems in the terahertz band (e.g., 95 GHz to 3 THz band) has been considered. It is expected that, due to more severe path loss and atmospheric absorption in the terahertz band compared to those in the millimeter wave (mmWave) band introduced in 5G, technologies capable of ensuring signal transmission distance (i.e., coverage) will become even more crucial. As the main technologies for ensuring coverage, it is necessary to develop radiofrequency (RF) components, antennas, and new waveforms with better coverage than orthogonal frequency division multiplexing (OFDM), beamforming, and large-scale multiple input multiple output (MIMO), full dimensional multiple input multiple output (FD-MIMO), array antennas, and multi-antenna transmission technologies such as large-scale antennas. In addition, new technologies for improving signal coverage in the terahertz band, such as metasurface-based lenses and antennas, orbital angular momentum (OAM), and reconfigurable intelligent surface (RIS), have been under discussion.

[0005] In addition, in order to improve spectral efficiency and overall network performance, the following technologies have been developed for 6G communication systems: full-duplex technology that enables uplink transmission and downlink transmission to use the same frequency resources simultaneously; network technologies that comprehensively utilize satellites, high-altitude platform stations (HAPS), etc.; improved network architectures that support mobile base stations, etc., and enable network operation optimization and automation, etc.; dynamic spectrum sharing technology via conflict avoidance based on spectrum usage prediction; use of artificial intelligence (AI) in wireless communication to improve overall network operation by leveraging AI from the design phase of developing 6G and internalizing end-to-end AI support capabilities; and next-generation distributed computing technology that overcomes the computing power limitations of user equipment (UE) through ultra-high-performance communication and computing resources (such as mobile edge computing (MEC), cloud, etc.) that can be realized on the network. In addition, by designing new protocols to be used in 6G communication systems, developing mechanisms for implementing hardware-based secure environments and secure use of data, and developing technologies for maintaining privacy, efforts are continuing to strengthen connectivity between devices, optimize the network, promote the softwareization of network entities, and increase the openness of wireless communication.

[0006] Research and development of 6G communication systems, which are expected to include ultra-connectivity such as person to machine (P2M) and machine to machine (M2M), will bring the next ultra-connectivity experience. In particular, services such as true immersive extended reality (XR), high-fidelity mobile holograms, and digital replicas are expected to be provided through 6G communication systems. In addition, services such as remote surgery, industrial automation, and emergency response for security and reliability enhancement will be provided through 6G communication systems, enabling the technology to be applied to various fields such as industry, healthcare, automotive, and household appliances. Summary of the Invention

[0007] The purpose of the embodiments of the present disclosure is to provide a method, a first node, and a storage medium executed by the first node in a communication system that can better meet the wireless communication requirements. To achieve this purpose, the technical solutions provided by the embodiments of the present disclosure are as follows:

[0008] On the one hand, the embodiments of the present disclosure provide a method executed by the first node in a communication system, the method including:

[0009] Obtain configuration information, where the configuration information includes information related to the data modulation method;

[0010] Generate a baseband signal based on the configuration information.

[0011] Optionally, generating the baseband signal based on the configuration information includes:

[0012] Determine a first angle related to data modulation based on the configuration information; generate a baseband signal based on the first angle.

[0013] Optionally, generating the baseband signal based on the configuration information includes:

[0014] Modulate the bit block to be modulated based on the configuration information to obtain a complex-valued modulation symbol block;

[0015] Perform resource mapping on the complex-valued modulation symbol block and a first sequence to generate a baseband signal, where the first sequence is a sequence related to the sensing function.

[0016] Optionally, modulate the bit block based on the configuration information and the first angle above.

[0017] Wherein, the first angle is an angle related to the argument of the modulated complex-valued modulation symbol block.

[0018] Optionally, the first angle includes a maximum constellation point phase difference (which can be called a second angle or other name), where the maximum constellation point phase difference is the upper limit of the absolute value of the difference between the constellation point argument and the constellation point center argument.

[0019] Optionally, the first angle includes a constellation point center argument (which can be called a third angle or other name).

[0020] On the other hand, an embodiment of the present disclosure provides a method executed by a second node in a wireless communication system, the method including:

[0021] Determine a data modulation method and a first angle related to data modulation;

[0022] Modulate the bit block to be modulated based on the data modulation method and the first angle to obtain a complex modulation symbol block.

[0023] Optionally, the data modulation method is a first modulation method, a second modulation method, a third modulation method, a fourth modulation method, a fifth modulation method, a sixth modulation method, or a seventh modulation method, and the first angle includes a second angle Δθ max and a third angle θ center .

[0024] Optionally, wherein, in the case of modulation by the first modulation method, the bit b(i) is mapped to a complex-valued modulation symbol d(i) according to:

[0025]

[0026] Or

[0027]

[0028] Or

[0029]

[0030] Or

[0031]

[0032] Optionally, in the case of modulation by the second modulation method, the bit b(i) is mapped to a complex-valued modulation symbol d(i) according to:

[0033]

[0034] Or

[0035]

[0036] Or,

[0037]

[0038] Or

[0039]

[0040] Optionally, in the case of modulation by the third, fourth, fifth, sixth or seventh modulation method, the bit b(i) is mapped to a complex-valued modulation symbol d(i) according to:

[0041] d(i) = p m (2b(2i)+b(2i + 1))

[0042] Or,

[0043]

[0044] where m is a modulation method identifier, and m = 1, 2, 3, 4, 5 respectively identify the third, fourth, fifth, sixth and seventh modulation methods;

[0045] Corresponding to the third modulation method,

[0046] Corresponding to the fourth modulation method,

[0047]

[0048]

[0049]

[0050] Among them,

[0051] corresponding to the fifth modulation method,

[0052]

[0053]

[0054]

[0055] Among them, b = cos(Δθ max ) - sin(Δθ max )

[0056] corresponding to the sixth modulation method,

[0057]

[0058]

[0059] Among them,

[0060] corresponding to the seventh modulation method,

[0061]

[0062]

[0063]

[0064] Among them,

[0065] On the other hand, an embodiment of the present disclosure provides a node in a wireless communication system. The node includes a transceiver and at least one processor coupled to the transceiver, and the at least one processor is configured to execute the method provided in any embodiment of the present disclosure.

[0066] Optionally, the node may be a first node or a second node.

[0067] On the other hand, an embodiment of the present disclosure further provides a computer-readable storage medium. A computer program is stored in the storage medium, and when the computer program is run by a processor, it executes the method provided in any embodiment of the present disclosure.

[0068] On the other hand, a computer program product is provided, which includes a computer program that, when executed by a processor, implements the method provided in any optional embodiment of the present disclosure.

[0069] The beneficial effects brought by the technical solutions provided in the embodiments of the present disclosure will be introduced below in conjunction with specific embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0070] Figure 1 FIG. shows a schematic structural diagram of a wireless network system applicable to the embodiments of the present disclosure;

[0071] Figure 2 FIG. shows a schematic structural diagram of an exemplary base station according to the present disclosure;

[0072] Figure 3 FIG. shows a schematic structural diagram of an exemplary user equipment according to the present disclosure;

[0073] Figure 4 FIG. shows a schematic flowchart of a method executed by a first node provided in the embodiments of the present disclosure;

[0074] Figure 5 FIG. is a schematic diagram of a constellation diagram provided in the embodiments of the present disclosure;

[0075] Figure 6 FIG. shows a schematic flowchart of a communication method provided in the embodiments of the present disclosure;

[0076] Figure 7 、 Figure 8 、 Figure 9 、 Figure 10 、 Figure 11 、 Figure 12 and Figure 13 FIG. shows schematic diagrams of constellation diagrams corresponding to various optional data modulation methods provided in the embodiments of the present disclosure;

[0077] Figure 14 、 Figure 15 、 Figure 16 and Figure 17 FIG. shows schematic diagrams of the principles of various optional signal generation methods provided in the embodiments of the present disclosure;

[0078] Figure 18 FIG. shows a schematic structural diagram of an electronic device provided in the embodiments of the present disclosure. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0079] Before presenting the following detailed implementation manners, it may be beneficial to set forth definitions of certain words and phrases used throughout the patent document. The term "connected" and its derivatives refer to any direct or indirect communication between two or more elements, regardless of whether those elements are in physical contact with each other. The terms "send", "receive", and "communicate" and their derivatives encompass both direct and indirect communication. The terms "comprise" and "include" and their derivatives mean inclusion without limitation. The term "or" is inclusive, meaning and / or. The phrase "associated with" and its derivatives mean including, being included within, being interconnected with, containing, being contained within, being connected to or connected with, being coupled to or coupled with, being communicable with, collaborating with, being interwoven, being juxtaposed, being close to, being bound to or bound with, having, having the attribute of, having a relationship to or having a relationship with, etc. The term "controller" means any device, system, or part thereof that controls at least one operation. Such a controller may be implemented in hardware or in a combination of hardware and software and / or firmware. The functions associated with any particular controller, whether local or remote, may be centralized or distributed. The phrase "at least one of" when used to list items means that different combinations of one or more of the listed items may be used, and it may only be necessary to have one item in the list. For example, "at least one of A, B, and C" includes any of the following combinations: A, B, C, A and B, A and C, B and C, and only A, only B, only C. Similarly, the term "set" means one or more. Thus, a set of items may be a single item or a set of two or more items.

[0080] Moreover, the various functions described below can be implemented or supported by one or more computer programs, each formed of computer-readable program code and embodied in a computer-readable medium. The terms "application" and "program" refer to one or more computer programs, software components, instruction sets, procedures, functions, objects, classes, instances, related data, or portions thereof that are suitable for implementation in appropriate computer-readable program code. The phrase "computer-readable program code" includes any type of computer code, including source code, object code, and executable code. The phrase "computer-readable medium" includes any type of medium that can be accessed by a computer, such as read only memory (ROM), random access memory (RAM), hard disk drive, compact disc (CD), digital video disc (DVD), or any other type of memory. "Non-transitory" computer-readable media excludes wired, wireless, optical, or other communication links that convey transient electrical signals or other signals. Non-transitory computer-readable media include media in which data can be permanently stored and media such as rewritable optical discs or erasable memory devices in which data can be stored and later rewritten.

[0081] Throughout this patent document, definitions of certain other words and phrases are provided. Those of ordinary skill in the art should understand that, in many, if not most instances, such definitions apply to the prior and future use of the words and phrases so defined.

[0082] The figures included herein and the various embodiments for describing the principles of the present disclosure are for illustration only and should not be construed in any way as limiting the scope of the present disclosure. Additionally, those of ordinary skill in the art will understand that the principles of the present disclosure can be implemented in any suitably arranged wireless communication system.

[0083] The following Figures 1 to 3 describes various embodiments of the present disclosure implemented in a wireless communication system. Figures 1 to 3 The description does not imply a physical limitation or an architectural limitation on the ways in which different embodiments can be implemented. Different embodiments of the present disclosure can be implemented in any suitably arranged communication system.

[0084] Figure 1 illustrates an example wireless network according to an embodiment of the present disclosure. Figure 1 The embodiment of the wireless network shown is for illustration only. Other embodiments of the wireless network 100 can be used without departing from the scope of the present disclosure.

[0085] As Figure 1As shown, the wireless network includes base stations (next generation nodeB, gNB or gNodeB) 101, gNB 102, and gNB 103. gNB 101 communicates with gNB 102 and gNB 103. gNB 101 also communicates with at least one network 130 such as the Internet, a proprietary Internet Protocol (IP) network, or other data networks.

[0086] gNB 102 provides wireless broadband access to network 130 for a plurality of first user equipment (UE) within the coverage area 120 of gNB 102. The plurality of first UEs includes UE 111 that may be located in a small business (SB); UE 112 that may be located in an enterprise (E); UE 113 that may be located in a WiFi hot spot (HS); UE 114 that may be located in a first residence (R1); UE 115 that may be located in a second residence (R2); and UE 116 that may be a mobile device (M) such as a cellular phone, a wireless laptop computer, a wireless personal digital assistant (PDA), etc. gNB 103 provides wireless broadband access to network 130 for a plurality of second UEs within the coverage area 125 of gNB 103. The plurality of second UEs includes UE 115 and UE 116 as well as subscriber stations (SS, e.g., UE) 117, 118, and 119. In some embodiments, one or more of gNBs 101 - 103 may communicate with each other and with UEs 111 - 116 using existing wireless communication technologies, and one or more of UEs 111 - 119 may communicate directly with each other (e.g., UEs 117 - 119) using other existing or proposed wireless communication technologies.

[0087] Depending on the network type, the term "base station" or "BS" can refer to any component (or collection of components) configured to provide wireless access to a network, such as a transmit point (TP), a transmit-receive point (TRP), an enhanced (or "evolved") base station (eNodeB or eNB), a 5G base station (gNB), a macro cell, a femto cell, a wireless fidelity (WiFi) access point (AP), or other wireless-capable device. The base station can provide wireless access according to one or more wireless communication protocols, such as 3GPP 5G New Radio (NR), Long Term Evolution (LTE), LTE-Advanced (LTE-A), High Speed Packet Access (HSPA), Wi-Fi 802.11a / b / g / n / ac, etc. For convenience, various names of base station types, devices, and functions are used interchangeably in this patent document to refer to the network infrastructure components that provide wireless access to remote terminals. Also, depending on the network type, the term "user equipment" (UE) can refer to any component such as a mobile station (MS), a user station (SS), a remote terminal, a wireless terminal, a receiving point, or a user device. For convenience, various names of user equipment types, devices, and functions are used interchangeably in this patent document to refer to the remote wireless device that wirelessly accesses the BS regardless of whether the UE is a mobile device (such as a mobile phone or a smart phone) or a device that is generally regarded as a fixed device (such as a desktop computer or a vending machine).

[0088] The dashed lines illustrate the approximate extent of coverage areas 120 and 125, and coverage areas 120 and 125 are shown as approximately circular merely for illustrative and explanatory purposes. It should be clearly understood that coverage areas associated with a gNB, such as coverage areas 120 and 125, can have other shapes, including irregular shapes, depending on the configuration of the gNB and variations in the wireless environment associated with natural and man-made obstacles.

[0089] As described in more detail below, one or more of UEs 111-119 include circuitry, programming, or a combination thereof. In certain embodiments, one or more of gNBs 101-103 include circuitry, programming, or a combination thereof.

[0090] Although Figure 1 an example of a wireless network is shown, Figure 1Make various changes. For example, the wireless network 100 can include any number of gNBs and any number of UEs in any suitable arrangement. Moreover, the gNB 101 can communicate directly with any number of UEs and provide those UEs with wireless broadband access to the network 130. Similarly, each of the gNBs 102 - 103 can communicate directly with the network 130 and provide the UEs with direct wireless broadband access to the network 130. Additionally, the gNBs 101, 102, and / or 103 can provide access to other or additional external networks such as an external telephone network or other types of data networks.

[0091] Figure 2 Shows an example base station according to an embodiment of the present disclosure. Figure 2 The embodiment of the gNB 102 shown in is for illustration only, and Figure 1 the gNBs 101 and 103 can have the same or similar configurations. However, gNBs appear in a variety of configurations, and Figure 2 do not limit the scope of the present disclosure to any particular implementation of the gNB.

[0092] As Figure 2 shown, the gNB 102 includes a plurality of antennas 200a - 200n, a plurality of radio frequency (RF) transceivers 201a - 201n, transmit (TX) processing circuitry 203, and receive (RX) processing circuitry 204. The gNB 102 also includes a controller / processor 205, a memory 206, and a backhaul or network interface (IF) 207.

[0093] The RF transceivers 201a - 201n receive incoming RF signals, such as signals transmitted by UEs in the network 100, from the antennas 200a - 200n. The RF transceivers 201a - 201n down-convert the incoming RF signals to generate intermediate frequency (IF) or baseband signals. The IF or baseband signals are sent to the RX processing circuitry 204, which generates a processed baseband signal by filtering, decoding, and / or digitizing the baseband or IF signal. The RX processing circuitry 204 sends the processed baseband signal to the controller / processor 205 for further processing.

[0094] The TX processing circuit 203 receives analog or digital data (such as voice data, web data, e-mail, or interactive video game data) from the controller / processor 205. The TX processing circuit 203 encodes, multiplexes, and / or digitizes the outgoing baseband data to generate a processed baseband or IF signal. The RF transceiver 201a - 201n receives the outgoing processed baseband or IF signal from the TX processing circuit 203 and upconverts the baseband or IF signal to an RF signal transmitted via the antennas 201a - 201n.

[0095] The controller / processor 205 may include one or more processors or other processing devices that control the overall operation of the gNB 102. For example, the controller / processor 205 may control the reception of forward channel signals and the transmission of reverse channel signals performed by the RF transceivers 201a - 201n, the RX processing circuit 204, and the TX processing circuit 203 according to well-known principles. The controller / processor 205 may also support additional functions, such as more advanced wireless communication functions.

[0096] For example, the controller / processor 205 may support beamforming or directional routing operations, where the outgoing signals from the multiple antennas 200a - 200n are weighted differently to effectively steer the outgoing signals in a desired direction. Any of a variety of other functions may be supported in the gNB 102 by the controller / processor 205.

[0097] The controller / processor 205 is also capable of executing programs and other processes located in the memory 206, such as an operating system (OS). The controller / processor 205 may move data into the memory 206 or out of the memory 206 as needed for the execution of processes.

[0098] The controller / processor 205 is also connected to a backhaul or network interface 207. The backhaul or network interface 207 allows the gNB 102 to communicate with other devices or systems via a backhaul connection or via a network. The interface 207 may support communication via any suitable wired or wireless connection. For example, when the gNB 102 is implemented as part of a cellular communication system (such as a cellular communication system supporting 5G, LTE, or LTE - A), the interface 207 may allow the gNB 102 to communicate with other gNBs via a wired or wireless backhaul connection. When the gNB 102 is implemented as an access point, the interface 207 may allow the gNB 102 to communicate via a wired or wireless local area network or via a wired or wireless connection to a larger network (such as the Internet). The interface 207 includes any suitable structure that supports communication via a wired or wireless connection such as Ethernet or an RF transceiver.

[0099] Memory 206 is connected to controller / processor 205. A portion of memory 206 may include random access memory (RAM), and another portion of memory 206 may include flash memory or other read-only memory (ROM).

[0100] Although Figure 2 shows one example of gNB 102, various changes may be made Figure 2 thereto. For example, gNB 102 may include any number of Figure 2 each component shown in. As a specific example, the access point may include a plurality of interfaces 207, and the controller / processor 205 may support routing functions to route data between different network addresses. As another specific example, although shown as including a single instance of TX processing circuitry 203 and a single instance of RX processing circuitry 204, gNB 102 may include multiple instances of each (such as one for each RF transceiver). For example, Figure 2 the various components in may be combined, further subdivided, or omitted, and additional components may be added according to specific needs.

[0101] Figure 3 An example user equipment according to an embodiment of the present disclosure is shown. Figure 3 The embodiment of UE 116 shown in is for illustration only, and Figure 1 UEs 111-115 and 117-119 may have the same or similar configurations. However, UEs appear in a variety of configurations, and Figure 3 the scope of the present disclosure is not limited to any particular implementation of the UE.

[0102] As Figure 3 shown, UE 116 includes antenna 301, radio frequency (RF) transceiver 302, TX processing circuitry 303, microphone 304, and receive (RX) processing circuitry 305. UE 116 also includes speaker 306, controller or processor 307, input / output (I / O) interface (IF) 308, input device 309, touch screen display 310, and memory 311. Memory 311 includes OS 312 and one or more applications 313.

[0103] The RF transceiver 302 receives an incoming RF signal transmitted by the gNB of the network 100 from the antenna 301. The RF transceiver 302 down-converts the incoming RF signal to generate an IF or baseband signal. The IF or baseband signal is sent to the RX processing circuit 305, which generates a processed baseband signal by filtering, decoding, and / or digitizing the baseband or IF signal. The RX processing circuit 305 sends the processed baseband signal to the speaker 306 (such as for voice data) or the processor 307 for further processing (such as for web browsing data).

[0104] The TX processing circuit 303 receives analog or digital voice data from the microphone 304 or other outgoing baseband data (such as web data, email, or interactive video game data) from the processor 307. The TX processing circuit 303 encodes, multiplexes, and / or digitizes the outgoing baseband data to generate a processed baseband or IF signal. The RF transceiver 302 receives the outgoing processed baseband or IF signal from the TX processing circuit 303 and up-converts the baseband or IF signal to an RF signal transmitted via the antenna 301.

[0105] The processor 307 may include one or more processors or other processing devices and execute the OS 312 stored in the memory 311 to control the overall operation of the UE 116. For example, the processor 307 may control the reception of forward channel signals and the transmission of reverse channel signals performed by the RF transceiver 302, the RX processing circuit 305, and the TX processing circuit 303 according to well-known principles. In some embodiments, the processor 307 includes at least one microprocessor or microcontroller.

[0106] The processor 307 is also capable of executing other processes and programs located in the memory 311, such as a process for CSI (Channel State Information) reporting on an uplink channel. The processor 307 may move data into the memory 311 or out of the memory 311 as needed for executing processes. In some embodiments, the processor 307 is configured to execute the application 313 based on the OS 312 or in response to a signal received from the gNB or the operator. The processor 307 is also coupled to the I / O interface 308, which provides the UE 116 with the ability to connect to other devices such as laptop computers and portable computers. The I / O interface 308 is a communication path between these accessories and the processor 307.

[0107] The processor 307 is also connected to a touch screen display 310. A user of the UE 116 can use the touch screen display 310 to input data into the UE 116. The touch screen display 310 can be a liquid crystal display, a light emitting diode display, or other display capable of rendering text and / or at least limited graphics such as from a website.

[0108] The memory 311 is connected to the processor 307. A portion of the memory 311 can include RAM, and another portion of the memory 311 can include flash memory or other ROM.

[0109] Although Figure 3 an example of the UE 116 is shown, various changes can be made to Figure 3 it. For example, Figure 3 the various components in Figure 3 can be combined, further subdivided, or omitted, and additional components can be added according to specific needs. As a specific example, the processor 307 can be divided into multiple processors, such as one or more central processing units (CPUs) and one or more graphics processing units (GPUs). Moreover, although

[0110] How to optimize communication systems, improve the spectral efficiency of communication systems, etc. have always been hot issues that practitioners have been concerned about.

[0111] In addition, in recent years, as the operating frequency band of communication systems has been increasingly moving towards higher frequencies, communication systems will inevitably conflict with radar systems in the high-frequency band. However, there is a very high similarity between communication systems and radar systems both in terms of background theoretical knowledge and hardware structure. Therefore, in theory, two seemingly independent systems can be integrated to enhance the functions of communication systems and improve spectral efficiency, achieving a win-win situation. Therefore, Integrated Sensing And Communications (ISAC) is a popular research direction in the field of communication and one of the candidate technologies for 6G. The core purpose of an integrated communication and sensing system is to use the same set of hardware devices to achieve the function of perceiving the surrounding environment at the cost of as little resource overhead as possible while ensuring the basic communication function. The content of perception includes the distance, azimuth, speed, and even the type of objects in the surrounding environment. Different from the technology of positioning access terminals in traditional communication systems, the integrated communication and sensing technology can also achieve the perception of various information of non-access objects, which greatly increases the ability of the communication system to dynamically adjust its working state according to the surrounding environment (such as scheduling, beam management, early warning of access terminals, etc.).

[0112] In most potential application scenarios of integrated communication and sensing, the integrated communication and sensing system is required to simultaneously have high resolution, an ultra-long distance perception range, and an ultra-high speed perception range. However, whether it is distance perception, speed perception, or high resolution, the perception ability is proportional to the amount of air interface resources expended. To increase the distance perception range, a single perception signal needs to occupy more time resources. To increase the speed perception range, the perception signal needs to be sent more frequently, which also occupies more time resources. High resolution requires the perception signal to occupy a larger bandwidth. Therefore, if high-resolution perception over ultra-long distances and ultra-high speeds needs to be achieved simultaneously, the air interface resources required by the communication system will be very large. Since these resources are not used for communication, the communication rate and latency in the communication system will deteriorate significantly.

[0113] Therefore, in the technology of integrated communication and sensing, how to improve the utilization rate of resources while meeting the signal perception ability is also one of the technical problems that need to be considered and solved.

[0114] To optimize a communication system and solve or improve one or more of the existing problems, embodiments of the present disclosure provide a communication solution (a method performed by a first node / second node), which provides a brand-new baseband signal generation method. In addition, in some optional embodiments of this solution, data can be transmitted simultaneously on a sensing signal, which can significantly alleviate the problem of resource overhead and better meet the requirements of communication and sensing integration. The signal generation method provided by these optional embodiments enables the generated signal to have both sensing and communication functions, that is, the signal can achieve simultaneous and co-frequency transmission of sensing signals and data signals, and can make the signal have the ability to carry data without significantly affecting the signal sensing performance, so as to achieve communication and sensing integration with high resolution, ultra-long distance sensing range and ultra-high speed sensing range at low resource overhead.

[0115] The method provided by the embodiments of the present disclosure can be executed by any electronic device / node. For example, the node can be a user equipment in a wireless communication system or a network node, where the network node can be a base station or other network nodes (such as a transmission / reception point TRP).

[0116] It should be noted that some of the term names involved in the embodiments of the present disclosure may use the term names that already exist in communication standards, and some term names may be newly added or newly defined term names. The names of these newly added or newly defined terms may also use other names in future communication standards, or may be described in other ways (such as a text description). The names or designations of various information / messages / parameters / configurations involved in the embodiments of the present disclosure are not unique. Theoretically, as long as the functions, contents included, or the descriptions or explanations of the information / message / parameter / configuration can correspond or be associated, the names or designations of the information / message / parameter / configuration can be changed.

[0117] For example, the configuration information in the embodiments of the present disclosure can also be called configuration, first message or other message or signal configuration information, and the information used to indicate certain content can also be called indication information. For example, the information indicating whether to perform phase rotation can be called phase rotation indication information, or can also be called phase rotation indication identifier or phase rotation identifier, etc. The signal generated by using the solution provided by the embodiments of the present disclosure can be called signal, sensing signal, sensing integration signal, integration signal, physical signal or other names.

[0118] The technical solutions provided by the present disclosure and the technical effects produced by the technical solutions are described below through descriptions of various alternative embodiments. Without conflict or contradiction, the following embodiments may refer to, draw on, or combine with each other. For the same terms, similar features, and similar implementation steps in different embodiments, they will not be described repeatedly. For the interaction steps between different nodes, the corresponding solutions of the other network node can be obtained based on the description of the solution of one network node. For example, if one network node receives configuration information from another network node, correspondingly, it can be obtained that the other network node sends configuration information to the above-mentioned one network node. One node (transmitter) sends a signal, and the corresponding node (receiver) receives the signal. The signal transmitted by the transmitter can be a modulated signal with data. After receiving the signal, the receiver demodulates the signal using an appropriate demodulation method to obtain the data therein. In an embodiment including multiple steps, if there is no clear sequence of the multiple steps, the present disclosure embodiments do not uniquely limit the execution sequence of the multiple steps.

[0119] The optional implementation manners of the method provided by the present disclosure are further described below in combination with the principle of the solution provided by the present disclosure and several optional embodiments. The steps of different embodiments can be combined or replaced with each other without conflict.

[0120] Figure 4 A method executed by a first node in a wireless communication system provided by an embodiment of the present disclosure is shown. This method is a new baseband signal generation method. The first node is a sending node / transmitter. Optionally, the first node can be a user equipment, the first node can also be an intermediate node in the communication system, such as a relay node in a relay network, or can also be a base station, such as Figure 4 As shown, the method may include:

[0121] Step S410: Obtain configuration information, where the configuration information includes information related to a data modulation method;

[0122] Step S420: Generate a baseband signal based on the configuration information.

[0123] Among them, when the first node is a UE or other node other than a base station, the above-mentioned obtaining of configuration information may be that the UE receives the configuration information sent by the base station. When the first node is a base station, step S410 above may be implemented as the base station determining information related to data modulation. At this time, steps S410 and S420 provided by the embodiments of the present disclosure above may be described as: The base station generates a baseband signal according to the information related to data modulation.

[0124] Among them, in the above step S420, generating a baseband signal according to the configuration information may include: determining a first angle related to data modulation according to the configuration information, and generating a baseband signal according to the first angle.

[0125] Optionally, based on the configuration information (such as based on the configuration information and the first angle), the block of bits to be modulated (i.e., the data to be modulated, which can also be directly referred to as the block of bits) can be modulated to obtain a complex-valued modulation symbol block; based on the complex-valued modulation symbol block, resource mapping is performed to generate a baseband signal.

[0126] Among them, the block of bits to be modulated (the block of bits) is the bit stream of the data to be transmitted, that is, the bit data stream, and the value of each bit in the block of bits is either 0 or 1. Optionally, the block of bits to be modulated can be a scrambled block of bits, and the method of scrambling the block of bits can follow the regulations in the existing standard protocol.

[0127] In the embodiments of the present disclosure, the information related to the data modulation method (which can also be referred to as the first configuration) can also be referred to as the configuration related to the communication function, the configuration related to the data, or the modulation configuration information, or other names. Based on this configuration, the first node can determine one or more parameters related to data modulation. Optionally, based on this configuration, at least the data modulation method can be determined, and the first node modulates the data to be sent according to this configuration to obtain a complex-valued modulation symbol block.

[0128] Among them, the first angle is an angle related to the argument of the complex-valued modulation symbol block after modulation. Optionally, the first angle can include angle information capable of determining the argument of each complex-valued modulation symbol (constellation point argument) in the complex-valued modulation symbol block after modulation. Optionally, the first angle can include at least one of the maximum constellation point phase difference or the constellation point center argument, where the maximum constellation point phase difference is the upper limit of the absolute value of the difference between the constellation point argument and the constellation point center argument, that is, the absolute value of the difference between the argument of any complex-valued modulation symbol and the constellation point center argument is not greater than this phase difference. Optionally, the value of the maximum constellation point phase difference can be related to the communication situation. For example, when the channel quality is good, this phase difference can be relatively small, and when the channel quality is relatively poor, this phase difference can be relatively large. Among them, the relevant content of the maximum constellation point phase difference and the constellation point center argument will be further elaborated later.

[0129] In the embodiments of the present disclosure, based on the above configuration information, the first node can determine which modulation method is specifically adopted for the data modulation method, and can also determine the corresponding first angle, and then based on the determined data modulation method and the first angle, modulate the data to be transmitted.

[0130] Among them, the configuration information should at least include information capable of determining the data modulation method and information related to the above-mentioned first angle. Such information can be explicit notification / indication information or implicit information. For example, the configuration information can directly include the identification of the first angle and the data modulation method. For another example, the configuration information can include an index or a flag, and based on this index or flag, the data modulation method and the corresponding first angle can be determined through look-up tables or other pre-agreed methods.

[0131] In an optional embodiment of the present disclosure, the above-mentioned resource mapping based on the complex-valued modulation symbol block to generate a baseband signal may include: resource mapping the complex-valued modulation symbol block and a first sequence to generate a baseband signal, where the first sequence is a sequence related to the sensing function.

[0132] In an embodiment of the present disclosure, the first sequence may also be referred to as a sensing sequence, a sequence related to sensing, or a sequence for generating a sensing signal, etc. The specific type of the first sequence is not limited in the embodiments of the present disclosure. Theoretically, it can be any sequence that can be used for the sensing function. For example, the first sequence may include, but is not limited to, a Chirp sequence or a chaotic frequency modulation sequence. The generation method of the first sequence is not limited in the present disclosure. Optionally, the above-mentioned configuration information including information related to data modulation may further include information related to the first sequence, that is, information for generating the first sequence, and the first node may generate the first sequence according to this information. Of course, the information related to the first sequence may also be included in other configuration information. Optionally, the first sequence may be pre-generated by the first node or generated in real time.

[0133] In an embodiment of the present disclosure, the resources for data transmission and the resources for the sensing function are the same resources, where the resources may be referred to as the resources allocated for signal / physical signal transmission. Optionally, the resources may include at least one of time-domain resources and frequency-domain resources. Correspondingly, the resource mapping in the embodiments of the present disclosure is time-domain resource mapping and / or frequency-domain resource mapping.

[0134] In an embodiment of the present disclosure, the specific manner for the first node to obtain resources is not limited. Optionally, the first node may be a UE, and the resources for physical signal transmission may be configured by a base station. The specific manner for the base station to configure resources is not limited in the present disclosure. Optionally, the above-mentioned configuration information may further include resource configuration, and the UE may learn the resources for signal transmission according to this resource configuration. Similarly, the resource configuration may also be sent by the base station to the UE through other configuration information different from the above-mentioned configuration information.

[0135] Optionally, the first node may also be a network node, such as a base station, and the base station may determine the resources for physical signal transmission according to the resource configuration of the base station by itself.

[0136] In the embodiments of the present disclosure, different configurations / information may be included in the same configuration information or in different configuration information. For example, the configuration information in step S410 above includes one or more of the information related to the data modulation method, the information related to resources, and the information for generating the first sequence. For another example, the first node may obtain the first configuration information and the second configuration information respectively. The first configuration information is the configuration information related to the sensing function, which may include, but is not limited to, at least one of the information for the first sequence and the resource configuration for physical signal transmission. The second configuration information may include the information related to the communication function, which may include, but is not limited to, at least one of the above-mentioned configuration related to the data modulation method and the resource configuration for physical signal transmission.

[0137] Optionally, the configuration information in step S410 may include at least one of the following:

[0138] The first information, which is related to the data modulation method. Optionally, this information may be the information indicating the data modulation method;

[0139] The second information, which is related to the minimum code distance between constellation points. Optionally, this information may be the information indicating the minimum code distance between constellation points;

[0140] The third information, which is related to the central argument of the constellation point. Optionally, this information may be the information indicating the central argument of the constellation point;

[0141] The third information, which is related to the phase difference of large constellation points. Optionally, this information may be the information indicating the maximum phase difference of constellation points, where the maximum phase difference of constellation points is the upper limit of the absolute value of the difference between the argument of the constellation point and the central argument of the constellation point;

[0142] The information for indicating whether phase rotation is performed;

[0143] The fifth information, which is related to the modulation order, such as the information for indicating the modulation order;

[0144] The first index, which is used to determine at least one of the data modulation method, the central argument of the constellation point, the maximum phase difference of the constellation points, whether to perform step-by-step behavioral rotation, and the modulation order.

[0145] Among them, the first piece of information, which can also be referred to as modulation mode indication information, can be an explicit indication. For example, this indication information can be a modulation mode identifier, such as an identifier or index of the modulation mode. As an example, assuming that the modulation mode can be one of 4 modulation modes, two bits can be used to indicate the modulation mode. For example, 00, 01, 10, and 11 respectively identify a modulation mode. The first node can learn which modulation mode to adopt according to the values of these two bits carried in the configuration information. Alternatively, the modulation mode indication information can also be an implicit indication. For example, a specific modulation mode is related to one or more other configuration parameters. The first node can determine which modulation mode should be used according to the other parameters. At this time, the modulation mode indication information can be the other parameters.

[0146] In an optional embodiment of the present disclosure, the data modulation mode can be related to the physical channel. It is predefined that physical channel a adopts modulation mode 1 and physical signal b adopts modulation mode 2. Then, the first node can determine the data modulation mode to be adopted according to the physical channel corresponding to the data to be transmitted.

[0147] In the embodiments of the present disclosure, a constellation point is a point on the constellation diagram. The constellation diagram is a combination of all symbol points of the modulation signal in the IQ (In-phase Quadrature) plane. One constellation point corresponds to a complex-valued modulation symbol. The argument of the constellation point, that is, the phase angle of the constellation point, is the angle formed by the constellation point and the horizontal axis. The amplitude (or magnitude) of the constellation point is the distance between the constellation point and the origin of the constellation diagram, which is the amplitude of the complex-valued modulation symbol.

[0148] The central argument of the constellation point is the angle between the symmetry axis of each constellation point in the constellation diagram and the horizontal axis. In the embodiments of the present disclosure, the constellation points in the constellation diagram corresponding to the complex-valued modulation symbol block obtained by modulation are symmetrically distributed along the axis. The symmetry axis passes through the origin of the constellation diagram, and the angle between this axis and the horizontal axis is the central angle of the constellation point.

[0149] The maximum constellation point phase difference is the upper limit of the absolute value of the difference between the argument of the constellation point and the central argument of the constellation point. It can be understood as the upper limit of the absolute value of the difference between the argument / phase angle of each constellation point in the constellation diagram and the central argument. The absolute value of the difference between the argument of any constellation point in the constellation diagram and the central argument will not exceed this upper limit. Optionally, the maximum constellation point phase difference is usually not greater than a certain angle, such as not greater than 45 degrees. Optionally, the maximum constellation point phase difference can be an angle not greater than 45 degrees or around 45 degrees, such as slightly greater than 45 degrees.

[0150] Such as Figure 5 In an example of a constellation diagram shown, there are two constellation points A and B in this constellation diagram. E (the length of the line connecting the constellation point and the origin) represents the amplitude of the constellation point.Figure 5 The θ in center represents the central argument of the constellation point, and Δθ max represents the maximum phase difference of the constellation points. The argument θ of any constellation point satisfies |θ - θ center | ≤ Δθ max .

[0151] In the embodiments of the present disclosure, the parameters of the constellation points described can all be referred to as the parameters of the complex-valued modulation symbols. For example, the argument of the constellation point can be referred to as the argument of the complex-valued modulation symbol, and the average power of the complex-valued modulation symbol can be referred to as the average power of the constellation point.

[0152] The above-mentioned minimum code distance refers to the minimum distance among the distances between the constellation points in the constellation diagram. In the embodiments of the present disclosure, there may be a corresponding relationship between the minimum code distance and the maximum phase difference of the constellation points, that is, the minimum code distance and the maximum phase difference of the constellation points satisfy a specific relationship. The maximum phase difference of the constellation points can be determined according to the minimum code distance, and the minimum code distance can be determined according to the maximum phase difference of the constellation points.

[0153] Similarly, one or more of the above-mentioned second information, third information, and fourth information can be implicit indication information or explicit indication information. For example, the configuration information includes the minimum code distance or the indication information of the minimum code distance, and this information also implicitly indicates the maximum phase difference of the constellation points.

[0154] The fifth information, which can also be referred to as the modulation order indication information, can be used to determine the modulation order of the modulation method. Optionally, the modulation orders of different modulation methods can be configured or pre-agreed. Or, the same modulation method can correspond to one or more modulation orders, and the modulation order of the current modulation method can be determined according to the modulation order indication information.

[0155] In the embodiments of the present disclosure, the above-mentioned information for indicating whether to perform phase rotation, that is, the phase rotation indication information, is used to indicate whether to perform phase rotation during data modulation. In the embodiments of the present disclosure, for a data modulation method, if it is indicated to perform phase rotation, how to perform the rotation specifically can be pre-agreed. That is to say, for a modulation method, the mapping method from bits to complex-valued modulation symbol blocks when performing phase rotation and the mapping method from bits to complex-valued modulation symbol blocks when not performing phase rotation are defined.

[0156] The phase rotation in the embodiments of the present disclosure may be referred to as stepped phase rotation, and the stepped phase rotation will at least affect the modulation results of at least some of the bits in the bit block. Optionally, for the same data modulation method, compared with not performing phase rotation, performing phase rotation may affect at least one of the phase or amplitude of the complex-valued modulation symbols obtained after mapping. That is to say, the stepped phase rotation can be understood as that when using the data modulation method with phase rotation, not all the mappings from the bits in the bit block to the complex-valued modulation symbol block will perform phase rotation. Whether a bit's mapping to a complex-valued modulation symbol actually performs phase rotation is related to the serial number of the bit in the bit block. For example, the bits with even serial numbers will undergo phase rotation, and the bits with odd serial numbers will not undergo phase rotation, or vice versa.

[0157] The above-mentioned first index, or referred to as the first identifier or other names, may be an indication value, and one or more of the parameters related to data modulation can be determined based on this indication value. Optionally, the parameters related to data modulation can be determined based on the first index and a table / mapping relationship. For example, each row in the table is a corresponding manner between an index and a data modulation method, and the data modulation methods corresponding to different rows are different or at least one parameter of the corresponding data modulation methods is different (for example, the modulation order is different). For example, an example of the table is shown in Table 1 below. According to the first index, the relevant parameters of the modulation method can be determined by looking up the table. Among them, the specific acquisition method of the table / mapping relationship is not limited in the embodiments of the present disclosure. Optionally, the table can be pre-configured or agreed upon.

[0158] Table 1

[0159]

[0160]

[0161] Optionally, in the embodiments of the present disclosure, for each data modulation method, the specific modulation process of this modulation method can also be determined in advance. That is to say, once it is determined which modulation method it is, the first node can know how to specifically map the bit block to the complex-valued modulation symbol block. For example, when the modulation method is Modulation Method A, after the first node determines this modulation method, the mapping relationship between the data bits corresponding to this modulation method and the complex-valued modulation symbols is determined.

[0162] In the embodiments of the present disclosure, after the first node obtains the configuration related to the data modulation method, it can modulate the bit block to be transmitted / modulated (also referred to as bit stream or bit sequence, etc.) based on the configuration information to obtain a block of complex-valued modulation symbols. Optionally, the bit block to be modulated can be expressed as b(0), …, b(M−1), where M represents the number of bits in the bit block, that is, the number of bits in the codeword to be transmitted on the physical channel. Before modulating the bit block, scrambling processing can be performed first to obtain a scrambled bit block. Then, based on the above configuration information, the scrambled bit block is modulated by using the corresponding modulation schemes to obtain a block of complex-valued modulation symbols d(0), …, d(M−1).

[0163] In the solution provided by the embodiments of the present disclosure, after obtaining the block of complex-valued modulation symbols through data modulation, the complex-valued modulation symbol block and the sensing sequence can be fused and resource mapped to obtain a baseband signal that has both sensing functions and can realize data transmission, so that the generated baseband signal can simultaneously have sensing and data transmission functions with the same resources, effectively improving the resource utilization rate.

[0164] The baseband signal generated by using the solution provided by the embodiments of the present disclosure can also be referred to as a physical signal, a sensing signal, a sensing signal with a data transmission function, or other names.

[0165] Optionally, in order to minimize the impact on sensing performance as much as possible, the data modulation method in the embodiments of the present disclosure can be a modulation method that meets specific requirements. When the complex-valued data block modulated by this modulation method is fused with the sensing sequence, the complex-valued modulation symbol does not greatly change the amplitude and phase of the sensing signal, and the small fluctuations in the amplitude and / or phase of the sensing signal do not have an obvious impact on the sensing performance, thus achieving the purpose of transmitting data on the sensing signal. Optionally, the information related to data modulation can meet at least one of the following:

[0166] The absolute value of the difference between the argument of any constellation point and the argument of the constellation point center is not greater than the maximum constellation point phase difference;

[0167] There is a corresponding relationship between the minimum code spacing of the constellation points and the maximum constellation point phase difference;

[0168] The average power of the constellation points is a first value;

[0169] The argument of the constellation point is less than or equal to a second value;

[0170] The amplitude of the constellation point is less than or equal to the third value.

[0171] For the first node, each piece of information in at least one item satisfied by the above data modulation method can be pre-agreed or obtained by the first node according to the configuration information. This at least one item can be understood as debugging method constraint information or constraint conditions. Based on this constraint information, the generated baseband signal can have good sensing performance and can also transmit data.

[0172] Optionally, the absolute value of the difference between the argument of any constellation point and the central argument of the constellation point is not greater than the maximum constellation point phase difference, or the argument of the constellation point is less than or equal to the second value, which can constrain that the phase angles of the complex-valued modulation symbols obtained by data modulation are all limited within a certain argument range. Then, when the sensing sequence and the complex-valued modulation symbol block are block-combined (such as multiplied) and resource mapping is performed, the complex-valued modulation symbol will not cause a large change in the phase of the sensing signal.

[0173] Optionally, the average power of the constellation point is the first value (this first value is usually a relatively small value, such as 1), or the amplitude of the constellation point is less than or equal to the third value (which can be a pre-agreed value or a configured value), which can constrain that the amplitude of the complex-valued modulation symbols obtained by data modulation (for example, the amplitudes of the complex-valued modulation symbols are all concentrated around 1) will not cause a large change in the amplitude of the sensing signal.

[0174] According to the principle of signal processing, if there are slight fluctuations in the amplitude and / or phase of the sensing signal, it will not have an obvious impact on the sensing performance. Based on this, the solution provided in the embodiments of the present disclosure creatively proposes to use these allowed amplitudes and / or phases to transmit data. By limiting the amplitude and / or phase of the complex-valued modulation symbol within a certain range, the complex-valued modulation symbol will not cause a large change in the amplitude and / or phase of the sensing signal, thereby achieving the purpose of transmitting data on the sensing signal, enabling the communication resources for sensing functions to also transmit data, and thus improving the resource utilization rate.

[0175] Optionally, based on the complex-valued modulation symbol block and the first sequence for resource mapping to generate a baseband signal, including at least one of the following methods:

[0176] Method 1: Multiply the complex-valued modulation symbol block by the first sequence, perform resource mapping on the multiplied result, and generate a baseband signal based on the mapped result;

[0177] Method 2: Perform resource mapping on the complex-valued modulation symbol block, multiply the mapped result by the first sequence, and generate a baseband signal based on the multiplied result;

[0178] Method 3: Perform resource mapping on the first sequence, map the complex-valued modulation symbols to the resource / resource grid (Resource grid) on which the first sequence has been mapped, and generate a baseband signal based on the mapped result.

[0179] Optionally, before performing resource mapping based on the complex-valued modulation symbol block and the first sequence, it further includes: performing at least one of layer mapping, transform precoding, and precoding on the complex-valued modulation symbol block.

[0180] That is to say, after modulating the bit block to obtain the complex-valued modulation symbol block, at least one of layer mapping, transform precoding processing, or precoding processing can be performed on the complex-valued modulation symbol block first. For example, perform precoding after performing layer mapping, or perform precoding after performing layer mapping and transform precoding, and then perform fusion and resource mapping based on the processed complex-valued modulation symbol block and the sensing sequence. Among them, resource mapping can include mapping to virtual resource blocks and / or mapping to physical resource blocks.

[0181] Optionally, whether to perform transform precoding can be determined by the type of waveform based on which the physical signal is generated. For example, if the signal waveform is DFT-s-OFDM (Discrete Fourier Transform-Spread OFDM) waveform, the complex-valued modulation symbol block can be first subjected to transform precoding processing and then precoding processing. For other waveforms, such as CP-OFDM (Cyclic Prefix Orthogonal Frequency Division Multiplexing) waveform, precoding processing can be performed.

[0182] Optionally, whether to perform transform precoding processing on the complex-valued modulation symbol block, and the specific implementation methods of layer mapping, transform precoding, and precoding can all follow the conventions in the existing communication protocols.

[0183] Optionally, the resources allocated for the physical signal can be time-frequency resources. In the time domain, the resources can include at least one OFDM symbol, and in the frequency domain, the resources can include at least one subcarrier.

[0184] For the above Method 1, the complex-valued modulation symbol block and the first sequence can be multiplied first, and then resource mapping can be performed. Optionally, the complex-valued modulation symbol block and the first sequence can be multiplied through the following expression:

[0185] z[n] = y[n]s[n mod N], n = 0, 1, …, L×N - 1

[0186] Among them, N and L respectively represent the number of subcarriers allocated for the signal and the number of orthogonal frequency division multiplexing (OFDM) symbols. y[n] represents a block of complex-valued modulation symbols, or a block of complex-valued symbols obtained by performing at least one of transform precoding and precoding on the block of complex-valued modulation symbols. s[n], where n = 0, 1, …, L×N−1, represents a first sequence. For any value of n, s[n] is the (n + 1)-th element in the first sequence. z[n] represents the result of multiplication.

[0187] For the above-mentioned second method, the block of complex-valued modulation symbols (or the block of amplitude symbols obtained by performing at least one of transform precoding and precoding) can be first subjected to resource mapping, and then the mapped result is multiplied by the first sequence. Optionally, the mapped result can be multiplied by the first sequence in the following manner:

[0188]

[0189] where s[k′] = s[n mod N], n = 0, 1, ..., L×N−1

[0190] Among them, N and L respectively represent the number of subcarriers allocated for the signal and the number of OFDM symbols. k′ represents the subcarrier index, k′ = 0, .., N−1, l′ represents the OFDM symbol index, l′ = 0, 1, ..., L−1. s[n], where n = 0, 1, ..., L×N−1, represents a first sequence. a(k′, l′) represents the mapping result of the complex-valued modulation symbol mapped to the resource particle (k′, l′) with indices k′ and l′. a′(k′, l′) represents the result of multiplication.

[0191] Optionally, the above-mentioned subcarrier index and OFDM symbol index can be indices within the allocated resources for the signal. For example, if the number of allocated subcarriers is 3, k′ = 0 identifies the first subcarrier among the 3 subcarriers. Optionally, multiple subcarriers can be continuous or discontinuous, which is not limited in the embodiments of the present disclosure.

[0192] For the above-mentioned third method, this scheme can also be referred to as a joint mapping scheme. In this scheme, the sensing sequence can be first subjected to resource mapping, and then the mapped result is jointly resource-mapped with the complex-valued modulation symbols. Optionally, in this method, the first sequence can be resource-mapped based on the following expression:

[0193] a(k′, l′) = β·s[k′]

[0194] s[k′] = s[n mod N], n = 0, 1, ..., L×N−1

[0195] Among them, k′ = 0, .., N-1 is the relative subcarrier serial number / index within the bandwidth allocated for the physical signal, l′ = 0, 1, ..., L-1 is the relative serial number / index of the OFDM symbol allocated for the physical signal, l′ = 0 is the first OFDM symbol allocated for the physical signal, and β is a constant, which can be a constant determined by power allocation.

[0196] After obtaining the mapping result of the first sequence, optionally, the complex-valued modulation symbols can be mapped to the resources that have been mapped with the first sequence based on the following expression:

[0197]

[0198] Among them, a(k′, l′) represents the mapping result of s[k′] mapped to the resource element (k′, l′) with indexes k′ and l′, d[j] represents the mapping result of the complex-valued modulation symbol mapped to the resource element (k′, l′), and a′(k′, l′) represents mapping the replicated modulation symbol to the resource element (k′, l′) that has already been mapped with the elements in the first sequence.

[0199] After obtaining the mapping result by adopting the resource mapping method of the above method 1, method 2 or method 3, the baseband signal can be generated according to the signal after mapping in the manner specified in the existing communication standard protocol.

[0200] Among them, in the embodiments of the present disclosure, when performing resource mapping (resource mapping of the first sequence and / or mapping of the complex-valued modulation symbol block to resources), the mapping to the resource element (k′, l′) shall be in increasing order of the frequency-domain resource index first and then the time-domain resource index (the mapping to resource elements (k′, l′) shall be in increasing order of first the index k′ and then the index l′). The embodiments of the present disclosure also provide a variety of optional data modulation methods. Optionally, modulating the bit block to be modulated based on the configuration information to obtain a complex-valued modulation symbol block includes:

[0201] Modulating the bit block based on the configuration information by using the first modulation method, the second modulation method, the third modulation method, the fourth modulation method, the fifth modulation method, the sixth modulation method or the seventh modulation method to obtain a complex-valued modulation symbol block.

[0202] Regarding the specific modulation method names of the above first modulation method, second modulation method, third modulation method, fourth modulation method, fifth modulation method, sixth modulation method, or seventh modulation method, the embodiments of the present disclosure do not make a unique limitation, and theoretically, it can be any name. Optionally, the first modulation method can be called Sector-BPSK (Sector-Binary Phase Shift Keying, partial binary phase shift keying), and the modulation order can be 1 order. The second modulation method can be (Sector-2PAM, Sector-Binary Pulse Amplitude Modulation, partial binary pulse amplitude modulation), and its modulation order can be 1 order.

[0203] Optionally, in the case of modulation by the first modulation method, the bit b(i) is mapped to a complex-valued modulation symbol d(i) according to:

[0204]

[0205] Or

[0206]

[0207] Or

[0208]

[0209] Or

[0210]

[0211] where θ center is the central amplitude angle of the constellation point, and Δθ max is the maximum constellation point phase difference.

[0212] Optionally, in the case of modulation by the second modulation method, the bit b(i) is mapped to a complex-valued modulation symbol d(i) according to:

[0213]

[0214] Or

[0215]

[0216] Or,

[0217]

[0218] Or

[0219]

[0220] Optionally, in the case of modulation by the third modulation method, the fourth modulation method, the fifth modulation method, the sixth modulation method, or the seventh modulation method, the bit b(i) is mapped to a complex-valued modulation symbol d(i) according to:

[0221] d(i) = p m (2b(2i) + b(2i + 1))

[0222] Or,

[0223]

[0224] where m is a modulation method identifier, and m = 1, 2, 3, 4, 5 respectively identify the third modulation method, the fourth modulation method, the fifth modulation method, the sixth modulation method, and the seventh modulation method.

[0225] Optionally, corresponding to the third modulation method,

[0227] Optionally, corresponding to the fourth modulation method,

[0228]

[0229]

[0230]

[0231] where, Optionally, corresponding to the fifth modulation method,

[0232]

[0233]

[0234]

[0235] where, b = cos(Δθ max ) - sin(Δθ max ).

[0236] Optionally, corresponding to the sixth modulation method,

[0237]

[0238]

[0239]

[0240] where, Optionally, corresponding to the seventh modulation method,

[0241]

[0242]

[0243]

[0244]

[0245] wherein,

[0246] wherein, in each of the above formulas, θ center is the central amplitude angle of the constellation point, and Δθ max is the maximum constellation point phase difference.

[0247] It should be noted that the names of θ center and Δθ max can also be other names, such as the first angle and the second angle, or the first amplitude angle and the second amplitude angle, or the first phase angle and the second phase angle, etc. θ center and Δθ max can be determined according to the configuration information. Optionally, the configuration related to data modulation in the configuration information should at least include the indication information of θ center and Δθ max Of course, if θ center is 0, for example, it is pre-determined that θ center is 0, then the configuration information should at least include the information related to Δθ max , such as the indication information of Δθ max , which can be an explicit indication (for example, the value of Δθ max is included in the configuration information), or an implicit indication, such as Δθ max can be indicated by the minimum code spacing, or Δθ max can be obtained by looking up a table according to the first index.

[0248] By adopting any one of the above-mentioned various optional data modulation methods provided by the embodiments of the present disclosure, the complex-valued modulation symbol will not cause a great change to the amplitude and phase of the sensing signal, and the purpose of transmitting data on the sensing signal can be achieved without significantly affecting the sensing performance of the sensing signal.

[0249] It can be understood that any one of the above-mentioned various data modulation methods provided by the embodiments of the present disclosure can also be independently implemented. Based on this, the embodiments of the present disclosure also provide a method executed by a second node in a wireless communication system. This method is a data modulation method, and this method may include the following steps:

[0250] Determine the data modulation method and a first angle related to the data modulation; optionally, the data modulation method is the first modulation method, the second modulation method, the third modulation method, the fourth modulation method, the fifth modulation method, the sixth modulation method, or the seventh modulation method;

[0251] Modulate the bit block to be modulated based on the determined data modulation method and the first angle to obtain a complex modulation symbol block.

[0252] Among them, the description of any one of the above-mentioned multiple modulation methods can refer to the corresponding description in the previous text, and will not be repeated here.

[0253] Among them, the second node can be any node in the wireless communication system, which can be a UE, a base station, or other network nodes. The second node can be the same as or different from the first node. It should be noted that the UE in the embodiments of the present disclosure may include, but is not limited to, terminal devices such as commonly known mobile phones and computers, and may also be terminal devices in the Internet of Things, that is, Internet of Things devices.

[0254] To better illustrate the solution provided by the present disclosure, the following will describe the solution in more detail in combination with multiple specific embodiments. Taking the first node as the execution entity as an example, some embodiments provided by the present disclosure will be described below.

[0255] It should be noted that in actual implementation, some steps in the following embodiments can be omitted or replaced by other methods that can achieve the same purpose. In the following description of the embodiments, some steps that are the same as the physical signal generation steps in the existing communication protocol may also be omitted. For example, in the process of generating a baseband signal, before modulating the bit block, the bit block can be scrambled, and before resource mapping of the complex-valued modulation symbol, the complex-valued modulation symbol block can be precoded, and these are clear and conceivable to those skilled in the art. In addition, although the first sequence (sensing sequence) for generating a signal is not limited in the embodiments of the present disclosure, for the convenience of description, the first sequence will be taken as a Chirp sequence in some of the following embodiments. The signal generated by using the solution provided by the embodiments of the present disclosure can be called an integrated signal.

[0256] As an optional embodiment, Figure 6 shows a schematic flowchart of a method executed by a first node provided by the present disclosure, as Figure 6 shown, the method may include the following steps:

[0257] Step S61: Obtain configuration information related to signal generation. Optionally, the configuration information can be referred to as the configuration information of the integrated signal.

[0258] Step S62: Transmit the signal on the physical resources allocated for the signal according to the configuration information.

[0259] Optionally, the configuration information of the above integrated signal may at least include first configuration information related to the sensing function and / or second configuration information related to the communication function.

[0260] Optionally, the first configuration information may at least include information related to the generation of the sensing sequence, that is, the first configuration information can be used by the first node to generate the sensing sequence. The second configuration information at least includes configuration information related to the data modulation method, that is, the second configuration information can be used by the first node to determine the modulation method used during data transmission.

[0261] Optionally, the above second configuration information may include at least one of the following parameters or indication information of at least one of the following parameters:

[0262] ① Data modulation method;

[0263] ② Minimum code distance d min and maximum constellation point phase difference Δθ max of at least one;

[0264] ③ Constellation point center amplitude angle θ center ;

[0265] ④ Stepping phase rotation indication information;

[0266] ⑤ Modulation order;

[0267] ⑥ Configuration index that can uniquely determine the specific value of at least one of the above ① to ⑤ parameters, that is, the first index in the previous text.

[0268] Optionally, for any data modulation method provided by the embodiments of the present disclosure, the above minimum code distance d min (defined as the minimum distance between all possible complex-valued modulation symbols) and the maximum constellation point phase difference Δθ max can have a definite corresponding relationship. Therefore, the maximum constellation point phase difference Δθ max can either be directly configured in the second configuration information or calculated according to the definite corresponding relationship between d min and Δθ min under the condition that d max is configured.

[0269] Optionally, the stepped phase rotation indication information is 1-bit indication information, which indicates whether stepped phase rotation is performed during data modulation. For example, if the indication value is 1, it means phase rotation is performed; if the indication value is 0, it means no phase rotation is performed, or vice versa. Of course, whether to perform stepped phase rotation can also be pre-agreed. For example, a certain or all data modulation methods default to performing phase rotation, or do not perform phase rotation by default, or some specified / specific modulation methods are agreed to perform phase rotation, while some specific / specified modulation methods do not perform phase rotation. Or, the modulation methods of some specific physical channels need to perform phase conversion, while the modulation methods of some physical signals do not perform phase rotation. Here, the physical channel can be any physical channel, including but not limited to the uplink physical shared channel, downlink physical shared channel, broadcast channel, etc.

[0270] Optionally, the modulation order is related to the data modulation method. Each specific modulation method can have a unique corresponding modulation order. Then, when the first node determines the modulation method, it also determines the modulation order. Of course, one data modulation method can also correspond to at least two modulation orders. The first node can determine which modulation order to use according to the configuration information indication or according to the agreement.

[0271] Optionally, in the embodiments of the present disclosure, the average power of the complex-valued modulation symbols (also called constellation points) generated by any data modulation method for the data bits (i.e., the bits in the bit block) is a set value (for example, the average power of all complex-valued modulation symbols in the complex-valued modulation symbol block is 1), and the absolute value of the difference between the constellation point argument θ and the central argument θ center of the constellation point does not exceed Δθ max , that is, |θ - θ center | ≤ Δθ max .

[0272] Optionally, in the embodiments of the present disclosure, the constellation point argument is defined as θ = arctan(imaginary part / real part), that is, the four-quadrant arctangent value of the ratio of the imaginary part to the real part of the complex-valued modulation symbol within the range of [-π, π). Further optionally, the data modulation method can be either phase modulation, amplitude modulation, or amplitude-phase modulation.

[0273] As an example, assume that the constellation points in the constellation diagram obtained through data modulation are {1, j, -1, -j}. Then, the arguments corresponding to these four constellation points are 0, π / 2, -π, and (-π) / 2, respectively.

[0274] In the embodiments of the present disclosure, the first node may generate a sensing sequence according to the obtained configuration information, modulate the data bits to be transmitted according to the corresponding data modulation method according to the configuration information, and then fuse (such as multiply) the sensing sequence and the complex-valued data symbols generated by modulation, and then perform resource mapping (or first perform resource mapping on the sensing sequence and then fuse it with the complex-valued modulation symbols, or first perform resource mapping on the complex-valued modulation symbols and then fuse them with the sensing sequence), generate an integrated signal based on the mapped signal, and transmit the generated signal on the corresponding physical resources.

[0275] In the solution provided by the embodiments of the present disclosure, the integrated signal is jointly generated by the sensing sequence and the sequence of complex-valued modulation symbols obtained by modulating the data bits according to the data modulation method provided by the embodiments of the present disclosure. Among them, the sensing sequence and the sequence of complex-valued modulation symbols may be transmitted on the same physical resources (such as time domain), such as being transmitted on the same time domain resources, or being transmitted on the same time domain resources and within the same bandwidth. Optionally, on the resource units where data is actually transmitted (such as resource particles of time-frequency resources), the complex symbols actually carried by the signal are obtained by multiplying the complex-valued modulation symbols obtained by modulating the data by the corresponding elements of the sensing sequence.

[0276] The following describes several optional data modulation methods provided by the present disclosure in conjunction with some optional embodiments. It should be noted that in actual implementation, some limiting conditions in the following optional embodiments (for example, when the stepped phase rotation indication information indicates stepped phase rotation or does not indicate stepped phase rotation) may or may not be available, because it may also be agreed that a data modulation method that meets certain conditions is adopted, and indication may not be required.

[0277] Embodiment 1

[0278] In this embodiment, the modulation scheme of the first modulation method is given. The first modulation method is a modulation scheme with a modulation order of 1 (that is, one bit is mapped to one complex-valued modulation symbol). The following will refer to this modulation scheme as Sector-BPSK.

[0279] Figure 7 FIG. shows a schematic diagram of the constellation diagram corresponding to Sector-BPSK. As can be seen from the figure, there are 2 constellation points in this modulation scheme. The two constellation points of Sector-BPSK are respectively and θ center is the angle between the angular bisector of the angle between the connection lines of the two constellation points and the origin of the constellation diagram and the horizontal axis of the constellation diagram, and Δθ max is the maximum phase difference between the two constellation points. In this embodiment, there are 2 constellation points, and the maximum constellation point phase difference is also the argument / phase angle of the two constellation points and the central argument θ centerThe larger value in the absolute value of the difference, that is Figure 7 The difference between the argument of the constellation point in the first quadrant and the central argument in Figure 7 . Optionally, the amplitude of the constellation point in this embodiment is 1.

[0280] Assume that the bit data stream (bit block) is b(0), b(1),..., taking values of either 0 or 1. Then the modulation method of Sector - BPSK is as follows:

[0281] ① When the stepped phase rotation indication information indicates that no stepped phase rotation is performed

[0282] In the case of Sector - BPSK modulation, the bit b(i) is mapped to a complex - valued modulation symbol d(i) according to:

[0283]

[0284] Or

[0285]

[0286] ② When the stepped phase rotation indication information indicates that stepped phase rotation is performed

[0287] In the case of Sector - BPSK modulation, the bit b(i) is mapped to a complex - valued modulation symbol d(i) according to:

[0288]

[0289] Or

[0290]

[0291] Embodiment 2

[0292] In this embodiment, the modulation scheme of the second modulation method is given. The second modulation method is a modulation scheme with a modulation order of 1. Hereinafter, this modulation scheme will be referred to as Sector - 2PAM.

[0293] Figure 8 The schematic diagram of the constellation diagram corresponding to Sector - 2PAM is shown. There are 2 constellation points in this modulation scheme. The two constellation points of Sector - 2PAM are respectively And

[0294] It should be noted that although the constellation points of Sector - 2PAM in the figure do not explicitly contain Δθ max , in order to obtain the unique solution of the constellation point coordinates, it is necessary to implicitly contain Δθ in the calculation formula of the constellation points of Sector - 2PAM max .

[0295] Assume that the bit data stream (bit block) is b(0), b(1),..., taking values of either 0 or 1. Then the modulation method of Sector-BPSK is as follows:

[0296] ① When the step phase rotation indication information indicates that no step phase rotation is to be performed

[0297] In the case of Sector-2PAM modulation, the bit b(i) is mapped to a complex-valued modulation symbol d(i) according to:

[0298]

[0299] Or

[0300]

[0301] ③ When the step phase rotation indication information indicates that step phase rotation is to be performed

[0302] In the case of Sector-2PAM modulation, the bit b(i) is mapped to a complex-valued modulation symbol d(i) according to:

[0303]

[0304] Or

[0305]

[0306] In the above-mentioned First Embodiment and Second Embodiment provided by the present disclosure, Sector-BPSK and Sector-2PAM corresponding to the same Δθ max can have the same minimum code spacing. Among them, for Sector-BPSK and Sector-2PAM, their minimum code spacing is both d mmin = 2sin(Δθ max ).

[0307] In practical applications, if there is only the minimum code spacing d min in the configuration information and there is no maximum constellation point phase difference Δθ max , then it can be calculated according to Δθ max = arcsin(d mmin / 2), or the Δθ min satisfying this formula can be obtained by looking up a table according to the determination relationship of d max = 2sin(Δθ max ).

[0308] Optionally, for any data modulation method proposed in the embodiments of the present disclosure, θ centerIt can be 0 or other predefined values, or it can be determined based on configuration information. The transmitter can determine Δθ based on one or more pieces of information related to data modulation. max and θ center , and then, according to the determined data modulation method and Δθ max and θ center , the corresponding data modulation method can be adopted to modulate the bit block to obtain a modulated complex-valued modulation symbol block. Optionally, resource mapping can be performed based on the complex-valued modulation symbol block to obtain a baseband signal.

[0309] Optionally, resource mapping can be performed based on the complex-valued modulation symbol block and the sensing sequence to generate a baseband signal that has both sensing and data transmission functions. According to signal processing theory, if there are slight fluctuations in the amplitude and phase of the sensing signal, it will not have a significant impact on the sensing performance. Therefore, these allowed amplitude and phase values can be used to transmit data. Since all the constellation points in the two first-order modulation schemes given in the above Embodiment 1 and Embodiment 2 of the present disclosure are limited within a specific angular range of the amplitude, and the amplitude is concentrated around 1, after multiplying the complex-valued modulation symbol by the sensing signal, the complex-valued modulation symbol will not cause a large change in the amplitude and phase of the sensing signal, that is, the purpose of transmitting data on the sensing signal is achieved.

[0310] In addition, the stepped phase rotation can make the generation of the signal more randomized. For example, when the signal waveform is DFT-s-OFDM, it can reduce the peak-to-average power ratio of the signal, thereby improving the efficiency of the power amplifier, reducing the signal distortion caused by the non-ideal characteristics of the hardware, and the generated signal can better meet the requirements.

[0311] Embodiment 3

[0312] The embodiments of the present disclosure also provide five second-order modulation schemes with a modulation order of 2 (i.e., two bits are mapped to one complex-valued modulation symbol). For the convenience of description, the following five modulation methods are respectively referred to as the second-order scheme 1 to the second-order scheme 5, corresponding to the third modulation method to the seventh modulation method described above.

[0313] Figures 9 to 13 Schematic diagrams of the constellation diagrams of these five second-order modulation methods are respectively shown. The constellation points of the second-order modulation scheme are 4. The p m (k) shown in the figure, where m = 1, 2, 3, 4, 5 and k = 1, 2, 3, 4 represent the kth constellation point of the second-order scheme m, and m = 1 identifies the second-order scheme 1. It should be noted that in practical applications, the corresponding relationship between the constellation point numbers and the constellation points is not limited to the optional manner shown in FIGS. 9 to Figure 13 shown in the figure, and the constellation point numbers and the constellation points only need to correspond one by one. The following takes Figures 9 to 13Taking the serial number identification method shown as an example, these 5 modulation schemes will be described separately.

[0314] ① The 4 constellation points of the second-order modulation scheme 1 can be expressed as

[0315]

[0316] The minimum code distance d of the second-order modulation scheme 1 min and the maximum constellation point phase difference Δθ max The relationship between them is d min = 2sin(Δθ max / 3). If only the minimum code distance d min is in the configuration information and there is no maximum constellation point phase difference Δθ max , then Δθ max = 3·arcsin(d min / 2) can be calculated to obtain Δθ max , or the Δθ min satisfying this equation can be obtained by looking up a table according to the determination relationship of d max = 2sin(Δθ max .

[0317] ② The respective constellation points of the second-order modulation scheme 2 can be expressed as

[0318]

[0319]

[0320]

[0321]

[0322] Among them,

[0323] As Figure 10 shown, in the second-order modulation scheme 2, the four constellation points form an equilateral rhombus, that is, the lengths of the four sides of the rhombus are all equal to the distance between p2(0) and p2(1). Similarly, the correspondence between the constellation point serial number and the constellation point is not limited to Figure 10 and the above formula. The constellation point serial number and the constellation point only need to correspond one by one.

[0324] The minimum code distance d of the second-order modulation scheme 2 min and the maximum constellation point phase difference Δθ max The relationship between them is If only the minimum code distance d min is in the configuration information and there is no maximum constellation point phase difference Δθ max , then according to The determination relationship obtains Δθ satisfying this formula by looking up a table max .

[0325] ③ Each constellation point of the second - order modulation scheme 3 can be expressed as

[0326]

[0327]

[0328]

[0329]

[0330] where b = cos(Δθ max ) - sin(Δθ max ).

[0331] As Figure 11 shown, the four constellation points of the second - order modulation scheme 3 form a square. The minimum code distance d min and the maximum constellation point phase difference Δθ max have the relationship If only the minimum code distance d min is in the configuration information and there is no maximum constellation point phase difference Δθ max , then it can be calculated according to , or the Δθ satisfying this formula can be obtained by looking up a table according to the determination relationship of The determination relationship obtains Δθ satisfying this formula by looking up a table max .

[0332] ④ Each constellation point of the second - order modulation scheme 4 can be expressed as

[0333]

[0334]

[0335]

[0336]

[0337] where

[0338] As Figure 12 shown, the four constellation points of the second - order modulation scheme 4 form the largest inscribed square of a sector. The minimum code distance d min and the maximum constellation point phase difference Δθ max have the relationship If only the minimum code distance d minWithout the maximum constellation point phase difference Δθ max , then it can be obtained by looking up a table according to the determined relationship to get Δθ that satisfies this formula max .

[0339] ⑤ Each constellation point of the second - order modulation scheme 5 can be expressed as

[0340]

[0341]

[0342]

[0343]

[0344] Among them

[0345] As Figure 13 shown, the relationship between the minimum code spacing d min and the maximum constellation point phase difference Δθ max is If there is only the minimum code spacing d min in the configuration information and there is no maximum constellation point phase difference Δθ max , then it can be obtained by looking up a table according to the determined relationship to get Δθ that satisfies this formula max .

[0346] For the above 5 second - order modulation schemes 1 to 5, assuming that the bit data stream is b(0), b(1),..., taking values of either 0 or 1, the modulation methods of schemes 1 to 5 can be as follows:

[0347] (1) When the step - phase rotation indication information indicates that no step - phase rotation is performed

[0348] In the case of modulation by the second - order modulation scheme m (the scheme number is denoted as m, m = 1, 2, 3, 4, 5), the bit b(i) is mapped to the complex - valued modulation symbol d(i) according to:

[0349] d(i)=p m (2b(2i)+b(2i + 1))

[0350] (2) When the step - phase rotation indication information indicates that step - phase rotation is performed

[0351] In the case of modulation by the second - order modulation scheme m (the scheme number is denoted as m, m = 1, 2, 3, 4, 5), the bit b(i) is mapped to the complex - valued modulation symbol d(i) according to:

[0352]

[0353] Since all the constellation points in the above five second-order modulation schemes given in the embodiments of the present disclosure are limited within a specific angular range, and the amplitudes are concentrated around 1, after multiplying the complex-valued modulation symbol by the sensing signal, the complex-valued modulation symbol will not cause a great change to the amplitude and phase of the sensing signal. Therefore, the purpose of transmitting data on the sensing signal can be achieved while ensuring that the sensing performance is not significantly affected, improving the resource utilization rate.

[0354] Similarly, the stepped phase rotation can reduce the peak-to-average power ratio of the signal when the signal waveform is DFT-s-OFDM, thereby improving the efficiency of the power amplifier and reducing the signal distortion caused by the non-ideal characteristics of the hardware.

[0355] The following describes the signal generation method implemented based on the solution provided in the embodiments of the present disclosure in conjunction with several optional embodiments. The specific form of the waveform on which the signal generation is based is not limited in the embodiments of the present disclosure, and the waveform may include, but is not limited to, the DFT-s-OFDM waveform or the CP-OFDM waveform in the following embodiments.

[0356] Embodiment 4

[0357] This embodiment provides a signal generation method. Optionally, this method may be a signal generation method based on the DFT-s-OFDM waveform. Figure 14 FIG. shows a schematic diagram of the signal generation principle of this method. As Figure 14 shown, this method may include processes such as sensing sequence generation, data modulation, transform precoding, merging (multiplication), and resource mapping. It should be noted that in actual implementation, there is no unique limitation on the order of processing of other steps before the generation and fusion of the sensing sequence. The following describes each part of this method separately.

[0358] (1) Sensing sequence generation

[0359] The embodiments of the present disclosure do not limit the specific form of the sensing sequence. In this embodiment, a chirp sequence is used as an example for illustration. Assume the sensing sequence is where μ is a real number and N is the number of subcarriers allocated for the physical signal.

[0360] (2) Modulation

[0361] The modulation method of the data may be any one of the data debugging methods in Embodiment 1, Embodiment 2, and Embodiment 3 described above.

[0362] Optionally, for the DFT-s-OFDM waveform, regardless of the specific modulation scheme adopted, a data modulation method with stepped phase rotation can be used during data modulation. For example, the stepped phase rotation indication information is preferably used to indicate stepped phase rotation. Suppose the complex-valued modulation symbol block after modulation is d[n], where n = 0, 1, ..., L×N - 1, and L is the number of OFDM symbols allocated for the physical signal.

[0363] (3) Layer mapping, transform precoding, and precoding

[0364] The method of layer mapping and transform precoding for the complex-valued modulation symbol blocks d[0], ..., d[L×N - 1] can adopt the processing method of transform precoding defined in existing communication standard protocols.

[0365] After that, precoding can also be performed on the complex-valued symbol block after transform precoding. The specific method can be the same as the precoding processing method defined in existing standard protocols. Subsequent processing can be based on the complex-valued symbol block after transform precoding and / or precoding processing. Suppose the complex-valued symbol blocks after layer mapping, transform precoding, and precoding are y[0], ..., y[L×N - 1].

[0366] (4) Multiplication

[0367] Multiply the sensing sequence {s[n]} and the complex-valued symbol block {y[n]} in the following way to obtain the complex-valued data block {z[n]}:

[0368] z[n] = y[n]s[n mod N], where n = 0, 1, ..., L×N - 1

[0369] (5) Resource mapping

[0370] Map z[n] to the time-frequency resources allocated for the physical signal. The resource mapping method can adopt the resource mapping method defined in existing standard protocols.

[0371] (6) Baseband signal generation

[0372] Generate the baseband signal according to the signal after resource mapping. The generation method of the baseband signal can adopt the baseband signal generation method defined in existing standard protocols.

[0373] Taking N = 8 and L = 3 as an example below, an example of Steps 4 and 5 is given. Here, N = 8 means that 8 consecutive subcarriers are allocated for the physical signal, and L = 3 means that 3 consecutive OFDM symbols are allocated for the physical signal. Then, the signal mapping on the k'-th resource particle on the l'-th OFDM symbol within the time-frequency resource of the physical signal is shown in Table 2 below. Among them, k' = s[n mod N]. When performing resource mapping, the mapping to the resource particles should be in ascending order of the frequency-domain resource index first and then the time-domain resource index, that is, in the mapping manner of the time domain first, that is, in the increasing order of indexing k' first and then l'. As shown in Table 2, for the OFDM symbol with l' = 0, the first 8 elements in z[n], n = 0, 1,..., L×N - 1 are mapped to the 8 resource particles corresponding to l' = 0 first, and then the 8 elements from z[8] to z

[15] are mapped to the 8 resource particles corresponding to l' = 1, and the last 8 elements are mapped to the 8 resource particles corresponding to l' = 2.

[0374] Table 2

[0375]

[0376] In this embodiment, after transform precoding and precoding and before resource mapping, the complex-valued modulation symbols are multiplied by the sensing sequence, and then the multiplied result is mapped to the allocated physical resources. It is possible to implement both the sensing function and data transmission on the same physical resources with relatively small changes to the existing standards, improving resource utilization.

[0377] Embodiment 5

[0378] This embodiment provides a signal generation method based on the CP-OFDM waveform. As Figure 15 shown, this method may include the following:

[0379] (1) Sensing sequence generation

[0380] In this embodiment, the specific form of the sensing sequence is not limited, and the chirp sequence is still used as an example for illustration. Suppose the sensing sequence is where μ is a real number and N is the number of subcarriers within the bandwidth allocated for the physical signal.

[0381] (2) Modulation

[0382] The modulation method of the data can be any one of the first embodiment, the second embodiment, and the third embodiment provided above. Optionally, for the CP-OFDM waveform, regardless of the specific modulation scheme adopted, modulation without step phase rotation can be used. For example, the step phase rotation indication information preferably indicates no step phase rotation. Assume that the complex-valued modulation symbol block after modulation is d[n], where n = 0, 1, ..., L×M - 1, where L is the number of OFDM symbols allocated for the physical signal, and M is the number of subcarriers actually used for data transmission within the bandwidth allocated for the physical signal, where M ≤ N.

[0383] (3) Resource mapping

[0384] Perform resource mapping on the complex-valued modulation symbol block d[0],..., d[L×M - 1]. The resource mapping method can adopt the resource mapping method defined in the existing standard protocol. Optionally, before resource mapping, layer mapping and precoding can be performed on the complex-valued modulation symbol block, and resource mapping is performed on the precoded complex-valued symbol block.

[0385] Assume that the signals on each OFDM symbol after resource mapping are a(k′, l′), where k′ = 0,.., N - 1 is the relative subcarrier number within the bandwidth allocated for the physical signal, and l′ = 0, 1,..., L - 1 is the relative OFDM symbol number allocated for the physical signal. l′ = 0 is the first OFDM symbol allocated for the physical signal.

[0386] (4) Multiply point-by-point with the sensing sequence

[0387] Traverse l′. On each OFDM symbol allocated for the physical signal, multiply the sensing sequence and the signal a(k′, l′) on each OFDM symbol after resource mapping point-by-point according to the following method:

[0388]

[0389] (5) Baseband signal generation

[0390] Generate a baseband signal from a′(k′, l′). The baseband signal generation method can adopt the baseband signal generation method defined in the existing standard protocol.

[0391] Different from the embodiment, in this embodiment, the complex-valued modulation symbol and the sensing sequence are multiplied after resource mapping. Similarly, the sensing function and the data transmission function can be realized simultaneously with relatively small changes to the existing standard.

[0392] Embodiment Six

[0393] This embodiment provides a signal generation method based on the CP-OFDM waveform, as Figure 16As shown, the difference between this embodiment and Embodiment 5 is that in Embodiment 5, the complex-valued modulation symbol block is first resource-mapped and then multiplied by the sensing sequence. In this embodiment, the complex-valued modulation symbol block can be multiplied element-wise by the sensing sequence. Refer to step (4) in Embodiment 4. Then, the multiplied complex-valued data block can be resource-mapped. Refer to step (5) in the embodiment.

[0394] Embodiment 7 (Joint Resource Mapping Scheme)

[0395] This embodiment provides another signal generation method based on the CP-OFDM waveform, as Figure 17 shown. This method may include the following:

[0396] (1) Sensing Sequence Generation

[0397] This embodiment does not limit the specific form of the sensing sequence either. Still taking the chirp sequence as an example for illustration. Assume the sensing sequence is where μ is a real number and N is the number of subcarriers within the bandwidth allocated for the physical signal.

[0398] (2) Modulation

[0399] The modulation method of the data can be any one of Embodiments 1, 2, and 3 described above. Optionally, for the CP-OFDM waveform, regardless of the specific modulation scheme adopted, the stepped phase rotation indication information is preferably indicated not to perform stepped phase rotation. Of course, stepped phase rotation can also be performed.

[0400] Assume the complex-valued modulation symbol block after modulation is d[n], n = 0, 1,..., L×M - 1, where L is the number of OFDM symbols allocated for the physical signal, and M is the number of subcarriers actually used for data transmission within the bandwidth allocated for the physical signal.

[0401] (3) Sensing Sequence Resource Mapping

[0402] The first node should assume that the sensing sequence s[0],..., s[N - 1] satisfies power allocation and is mapped to the resource particles (k′, l′) within the resource block allocated for transmission. The mapping method is:

[0403] a(k′, l′) = β·s[k′]

[0404] where k′ = 0,.., N - 1 is the relative subcarrier sequence number within the bandwidth allocated for the physical signal, l′ = 0, 1,..., L - 1 is the relative OFDM symbol sequence number allocated for the physical signal, l′ = 0 is the first OFDM symbol allocated for the physical signal, and β is a constant determined by power allocation.

[0405] (4) Joint Resource Mapping

[0406] The first node shall assume that the complex-valued modulation symbol blocks d[0],..., d[L×M−1] are mapped to the resource particles (k′, l′) within the resource block allocated for transmission. Specifically, if a complex-valued modulation symbol (assuming the serial number of the mapped complex-valued modulation symbol is j) needs to be mapped onto the resource particle (k′, l′) (which has undergone the first sequence of mapping), then the mapping method of the data on this resource particle is: a′(k′, l′) = a(k′, l′)·d[j]. If no complex-valued modulation symbol needs to be mapped onto the resource particle (k′, l′), then a′(k′, l′) = a(k′, l′).

[0407] Among them, the mapping of the complex-valued modulation symbol block to the resource particle (k′, l′) shall be in ascending order of k′ first and then l′.

[0408] (5) Baseband Signal Generation

[0409] Generate the baseband signal from a′(k′, l′), and the generation method of the baseband signal can adopt the baseband signal generation method defined in the existing standard protocol.

[0410] Example Eight

[0411] This example gives another signal generation method for transmitting data in the sensing sequence in the time domain. The flowchart can be referred to Figure 16 , and this method can include the following content:

[0412] (1) Sensing Sequence Generation

[0413] This example does not limit the specific form of the sensing sequence either, and still takes the chirp sequence as an example for illustration. Assume the sensing sequence is where μ is a real number, and N T is the number of samples of the sensing sequence in the time domain, equal to the length of the sequence, that is, the number of elements in the sequence.

[0414] (2) Modulation

[0415] The modulation method of the data can be any one of the previous Examples One, Two, and Three. Optionally, regardless of the specific modulation scheme adopted, the stepped phase rotation indication information is preferably indicated as not performing stepped phase rotation. Of course, stepped phase rotation can also be performed.

[0416] Assume that the complex-valued modulation symbol block after modulation is d[n], n = 0, 1,... Among them, P is the number of samples corresponding to the symbol used to carry a single complex-valued modulation symbol. P = 1 means that each time-domain sample independently maps a complex-valued modulation symbol. P = 2 means that every two time-domain samples independently map a complex-valued modulation symbol, and the same applies to other values. The method for obtaining / determining P is not limited. Optionally, the first node can obtain the value of P through signaling, or the obtained configuration information can include the indication information of P, or the value agreed with the receiving end can be used.

[0417] (3) Multiply the sensing sequence by the complex-valued modulation symbol block

[0418] The method of multiplication is as follows:

[0419] Among them, represents rounding down.

[0420] (4) Resource mapping

[0421] The method of resource mapping is as follows:

[0422] a′[n0 + n] = β · a[n], n = 0, 1,..., N T -1

[0423] Among them, n0 is the time-domain sample number of the first node that knows the mapping of a[0], and β is a constant determined by power allocation.

[0424] (5) Baseband signal generation

[0425] Performing analog-to-digital conversion (ADC) on the sequence after resource mapping can generate the baseband signal.

[0426] Embodiment Nine

[0427] This embodiment provides a method executed by a third node, and this method is a signal receiving method. Among them, the third node is a receiver. Optionally, the first node can be a UE, the third node can be a base station, or the first node is a base station and the third node is a UE.

[0428] Regardless of which specific signal generation method is used in Embodiments Four to Eight, the receiver can always obtain the received complex data block in a way opposite to the signal generation method. The general mathematical model of the received complex data block can be expressed as the following expression:

[0429] y[n] = h[n]s[g(n)]d[n] + ω[n]

[0430] Among them, d[n] is the n-th element (the element with serial number n, which can actually be the (n + 1)-th element) of the complex-valued modulation symbol block actually sent by the first node, i.e., the transmitting end, s[g(n)] is the corresponding element of the sensing sequence multiplied by d[n], and for a specific generation method (such as the various optional methods given in Embodiments 4 to 8 of the foregoing), g(n) may be different. h[n] is the channel value (channel parameter of the data transmission channel) experienced by d[n], and ω[n] is the term including various interferences and noises.

[0431] Assume that the third node has obtained the estimated value h′[n] of the channel value h[n] through pilots. Then, the operation of the third node during channel equalization is:

[0432] r[n] = W[n]y[n] = d[n] + W[n]ω[n]

[0433] The embodiments of the present disclosure do not limit the equalization algorithm. In particular, if zero-forcing equalization is adopted, then W[n] = 1 / (h′[n]s[g(n)]).

[0434] Then, the third node calculates the distance between r[n] and each possible constellation point, determines the constellation point with the closest distance as the constellation point actually sent by the transmitting end, and can thereby obtain the bit value corresponding to this constellation point, completing the demodulation of the signal.

[0435] It should be noted that the optional solutions provided in the above-mentioned various embodiments of the present disclosure can be implemented alone, and in the case where the implementation steps of different embodiments do not conflict, the embodiments or the steps of each embodiment can also be implemented in combination.

[0436] Based on the same principle as the method provided in the embodiments of the present disclosure, the embodiments of the present disclosure also provide a node, which may include a transceiver and at least one processor coupled to the transceiver. The at least one processor can execute the solution provided in any optional embodiment of the present disclosure. The node can be any electronic device, such as the electronic user device or network node.

[0437] Optionally, the above node can be the first node, and the at least one processor can be configured to execute any method executed by the first node provided in the embodiments of the present disclosure.

[0438] Optionally, the above node can also be the second node, and the at least one processor can be configured to execute any method executed by the second node provided in the embodiments of the present disclosure.

[0439] An embodiment of the present disclosure further provides an electronic device, which includes at least one transceiver and at least one processor coupled to the at least one transceiver. The at least one processor is configured to execute the method provided in any optional embodiment of the present disclosure.

[0440] Figure 18 FIG. shows a schematic structural diagram of an electronic device applicable to an embodiment of the present disclosure, as Figure 18 shown, Figure 18 The electronic device 4000 shown in FIG. includes: a processor 4001 and a memory 4003. Among them, the processor 4001 and the memory 4003 are connected, such as through a bus 4002. Optionally, the electronic device 4000 may further include a transceiver 4004, and the transceiver 4004 may be used for data interaction between the electronic device and other electronic devices, such as data sending and / or data receiving, etc. It should be noted that in practical applications, the transceiver 4004 is not limited to one, and the structure of the electronic device 4000 does not constitute a limitation on the embodiments of the present disclosure. Optionally, the electronic device may be a node in a wireless communication system, such as a first node. The node in the network may be a user equipment, or a base station or other network nodes.

[0441] The processor 4001 may be a CPU (Central Processing Unit), a general-purpose processor, a DSP (Digital Signal Processor), an ASIC (Application Specific Integrated Circuit), an FPGA (Field Programmable Gate Array), or other programmable logic devices, transistor logic devices, hardware components, or any combination thereof. It can implement or execute various exemplary logic blocks, modules, and circuits described in conjunction with the content of the present disclosure. The processor 4001 may also be a combination that implements a computing function, such as a combination of one or more microprocessors, a combination of a DSP and a microprocessor, etc.

[0442] The bus 4002 may include a path for transmitting information between the above components. The bus 4002 may be a PCI (Peripheral Component Interconnect) bus or an EISA (Extended Industry Standard Architecture) bus, etc. The bus 4002 may be divided into an address bus, a data bus, a control bus, etc. For ease of representation, Figure 18 only a thick line is shown in FIG., but it does not mean that there is only one bus or one type of bus.

[0443] The memory 4003 can be a ROM (Read Only Memory), or other types of static storage devices that can store static information and instructions, a RAM (Random Access Memory), or other types of dynamic storage devices that can store information and instructions. It can also be an EEPROM (Electrically Erasable Programmable Read Only Memory), a CD-ROM (Compact Disc Read Only Memory), or other optical disc storage, optical disc storage (including compact discs, laser discs, optical discs, digital versatile discs, Blu-ray discs, etc.), magnetic disk storage media, other magnetic storage devices, or any other medium that can be used to carry or store computer programs and can be read by a computer, which is not limited herein.

[0444] The memory 4003 is used to store the computer program for implementing the embodiments of the present disclosure and is controlled by the processor 4001 for execution. The processor 4001 is used to execute the computer program stored in the memory 4003 to implement the steps shown in the foregoing method embodiments.

[0445] The embodiments of the present disclosure provide a computer-readable storage medium on which a computer program is stored. When the computer program is executed by a processor, the steps and corresponding contents of the foregoing method embodiments can be implemented.

[0446] The embodiments of the present disclosure also provide a computer program product, including a computer program. When the computer program is executed by a processor, the steps and corresponding contents of the foregoing method embodiments can be implemented.

[0447] Terms such as "first", "second", "third", "fourth", "1", "2", etc. (if any) in the specification, claims, and the above drawings of the present disclosure are used to distinguish similar objects and do not necessarily need to be used to describe a specific order or sequence. It should be understood that such used data can be interchanged under appropriate circumstances so that the embodiments of the present disclosure described herein can be implemented in an order other than that shown or described in words.

[0448] It should be understood that although the flowchart of the embodiments of the present disclosure indicates each operation step by an arrow, the execution order of these steps is not limited to the order indicated by the arrow. Unless otherwise clearly stated herein, in some implementation scenarios of the embodiments of the present disclosure, the implementation steps in each flowchart may be executed in other orders according to requirements. In addition, some or all of the steps in each flowchart may include multiple sub-steps or multiple stages based on the actual implementation scenario. Some or all of these sub-steps or stages may be executed at the same time, and each sub-step or stage among these sub-steps or stages may also be executed at different times respectively. In the scenario where the execution times are different, the execution order of these sub-steps or stages can be flexibly configured according to requirements, and the embodiments of the present disclosure do not limit this.

[0449] The above text and drawings are provided only as examples to assist the reader in understanding the present disclosure. They are not intended and should not be construed as limiting the scope of the present disclosure in any way. Although certain embodiments and examples have been provided, it will be apparent to those skilled in the art based on the content disclosed herein that, without departing from the scope of the present disclosure, changes can be made to the illustrated embodiments and examples, and other similar implementation means based on the technical idea of the present disclosure can be adopted, which also fall within the protection scope of the embodiments of the present disclosure.

Claims

1. A method performed by a first node in a communication system, characterized in that, The method includes: Obtaining configuration information, where the configuration information includes information related to a data modulation method; Based on the configuration information, determining a first angle related to data modulation; Based on the first angle, generating a baseband signal.

2. The method according to claim 1, characterized in that, Based on the first angle, generating a baseband signal, including: Based on the configuration information and the first angle, modulating a bit block to be modulated to obtain a complex-valued modulation symbol block; Based on the complex-valued modulation symbol block and a first sequence for resource mapping to generate a baseband signal, where the first sequence is a sequence related to a sensing function.

3. The method according to claim 2, characterized in that, The resource mapping based on the complex-valued modulation symbol block and the first sequence to generate a baseband signal includes at least one of the following: Multiplying the complex-valued modulation symbol block by the first sequence, performing resource mapping on the multiplied result, and generating a baseband signal based on the mapped result; Performing resource mapping on the complex-valued modulation symbol block, multiplying the mapped result by the first sequence, and generating a baseband signal based on the multiplied result; Performing resource mapping on the first sequence, mapping the complex-valued modulation symbol to the resource on which the first sequence has been mapped, and generating a baseband signal based on the mapped result.

4. The method according to claim 2 or 3, characterized in that, Before performing resource mapping based on the complex-valued modulation symbol block and the first sequence, it further includes: Performing at least one of layer mapping, transform precoding, and precoding on the complex-valued modulation symbol block.

5. The method according to any one of claims 2 to 4, characterized in that, When performing resource mapping of the first sequence, the mapping to resource particles is in ascending order of frequency-domain resource index first and then time-domain resource index.

6. The method according to any one of claims 1 to 5, characterized in that, The information related to the data modulation method includes at least one of the following: First information, which is related to the data modulation method; Second information, which is related to the minimum code distance between constellation points; Third information, which is related to the central angle of the constellation points; Fourth information, which is related to the maximum phase difference between constellation points, where the maximum phase difference between constellation points is the upper limit of the absolute value of the difference between the constellation point angle and the central angle of the constellation point; Information for indicating whether phase rotation is performed; Fifth information, which is related to the modulation order; A first index, where the first index is used to determine at least one of a data modulation method, the central angle of the constellation points, the maximum phase difference between constellation points, whether phase rotation is performed, and the modulation order; Wherein, the first angle includes the maximum phase difference between constellation points, or includes the maximum phase difference between constellation points and the central angle of the constellation points.

7. The method according to any one of claims 1 to 6, characterized in that, The information related to the data modulation method satisfies at least one of the following: The absolute value of the difference between the angle of any constellation point and the central angle of the constellation point is not greater than the maximum phase difference between constellation points; There is a corresponding relationship between the minimum code distance between constellation points and the maximum phase difference between constellation points; The average power of the constellation points is a first value; The angle of the constellation points is less than or equal to a second value; The amplitude of the constellation points is less than or equal to a third value.

8. The method according to any one of claims 2 to 7, characterized in that, The first angle includes a maximum constellation point phase difference Δθ max and a constellation point center amplitude angle θ center , and based on the configuration information and the first angle, modulating the bit block to be modulated to obtain a complex-valued modulation symbol block, including: In the case of modulation by a first modulation method, the bit b(i) is mapped to a complex-valued modulation symbol d(i) according to: Or Or Or In the case of modulation by a second modulation method, the bit b(i) is mapped to a complex-valued modulation symbol d(i) according to: Or Or, Or In the case of modulation in the third modulation mode, the fourth modulation mode, the fifth modulation mode, the sixth modulation mode or the seventh modulation mode, the bit b(i) is mapped to a complex-valued modulation symbol d(i) according to: d(i) = p m (2b(2i) + b(2i + 1)) Or, where m is a modulation mode identifier, and m = 1, 2, 3, 4, 5 respectively identify the third modulation mode, the fourth modulation mode, the fifth modulation mode, the sixth modulation mode and the seventh modulation mode; Corresponding to the third modulation method, Corresponding to the fourth modulation method, Among them, Corresponding to the fifth modulation method, wherein, b = cos(Δθ max ) - sin(Δθ max ) Corresponding to the sixth modulation method, Among them, Corresponding to the seventh modulation method, Among them, 9. A method performed by a second node in a wireless communication system, characterized in that, The method includes determining a data modulation mode and a first angle related to the data modulation; modulating the bit block to be modulated based on the data modulation mode and the first angle to obtain a complex modulation symbol block.

10. The method according to claim 9, characterized in that, The data modulation method is the first modulation method, the second modulation method, the third modulation method, the fourth modulation method, the fifth modulation method, the sixth modulation method or the seventh modulation method, and the first angle includes a second angle Δθ max and a third angle θ center ; where, in the case of modulation in the first modulation mode, the bit b(i) is mapped to a complex-valued modulation symbol d(i) according to: Or Or Or In the case of modulation in the second modulation mode, the bit b(i) is mapped to a complex-valued modulation symbol d(i) according to: Or Or, Or In the case of modulation in the third modulation mode, the fourth modulation mode, the fifth modulation mode, the sixth modulation mode or the seventh modulation mode, the bit b(i) is mapped to a complex-valued modulation symbol d(i) according to: d(i) = p m (2b(2i) + b(2i + 1)) Or, where m is a modulation mode identifier, and m = 1, 2, 3, 4, 5 respectively identify the third modulation mode, the fourth modulation mode, the fifth modulation mode, the sixth modulation mode and the seventh modulation mode; Corresponding to the third modulation method, Corresponding to the fourth modulation method, Among them, Corresponding to the fifth modulation method, Among them, b = cos(Δθ max ) - sin(Δθ max ) Corresponding to the sixth modulation method, Among them, Corresponding to the seventh modulation method, Among them, 11. A node in a wireless communication system, characterized in that, The node includes a transceiver and at least one processor coupled to the transceiver, and the at least one processor is configured to execute the method according to any one of claims 1 to 10.

12. A computer-readable storage medium, characterized in that, A computer program is stored in the storage medium, and when the computer program is run by a processor, it executes the method according to any one of claims 1 to 10.

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