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

Abstract

The present disclosure relates to a fifth generation (5G) or sixth generation (6G) communication system for supporting higher data rates over fourth generation (4G) communication systems such as long-term evolution (LTE). In particular, an embodiment of the present disclosure provides a method performed by a first node in a wireless communication system and the first node. The method presents a new signal generation scheme and includes: acquiring configuration information, the configuration information including information related to a data modulation scheme; determining a first angle related to data modulation based on the configuration information; and generating a baseband signal based on the first angle.

Description

METHOD PERFORMED BY FIRST NODE IN WIRELESS COMMUNICATION SYSTEM AND THE FIRST NODE

[0001] The present disclosure relates to the field of wireless communication technology, and in particular to a method performed by a first node in a communication system and the first node.

[0002] At the beginning of the development of 5G mobile communication technologies, in order to support services and to satisfy performance requirements in connection with enhanced Mobile BroadBand (eMBB), Ultra Reliable Low Latency Communications (URLLC), and massive Machine-Type Communications (mMTC), there has been ongoing standardization regarding beamforming and massive MIMO for mitigating radio-wave path loss and increasing radio-wave transmission distances in mmWave, supporting numerologies (for example, operating multiple subcarrier spacings) for efficiently utilizing mmWave resources and dynamic operation of slot formats, initial access technologies for supporting multi-beam transmission and broadbands, definition and operation of BWP (BandWidth Part), new channel coding methods such as a LDPC (Low Density Parity Check) code for large amount of data transmission and a polar code for highly reliable transmission of control information, L2 pre-processing, and network slicing for providing a dedicated network specialized to a specific service.

[0003] Currently, there are ongoing discussions regarding improvement and performance enhancement of initial 5G mobile communication technologies in view of services to be supported by 5G mobile communication technologies, and there has been physical layer standardization regarding technologies such as V2X (Vehicle-to-everything) for aiding driving determination by autonomous vehicles based on information regarding positions and states of vehicles transmitted by the vehicles and for enhancing user convenience, NR-U (New Radio Unlicensed) aimed at system operations conforming to various regulation-related requirements in unlicensed bands, NR UE Power Saving, Non-Terrestrial Network (NTN) which is UE-satellite direct communication for providing coverage in an area in which communication with terrestrial networks is unavailable, and positioning.

[0004] Moreover, there has been ongoing standardization in air interface architecture / protocol regarding technologies such as Industrial Internet of Things (IIoT) for supporting new services through interworking and convergence with other industries, IAB (Integrated Access and Backhaul) for providing a node for network service area expansion by supporting a wireless backhaul link and an access link in an integrated manner, mobility enhancement including conditional handover and DAPS (Dual Active Protocol Stack) handover, and two-step random access for simplifying random access procedures (2-step RACH for NR). There also has been ongoing standardization in system architecture / service regarding a 5G baseline architecture (for example, service based architecture or service based interface) for combining Network Functions Virtualization (NFV) and Software-Defined Networking (SDN) technologies, and Mobile Edge Computing (MEC) for receiving services based on UE positions.

[0005] As 5G mobile communication systems are commercialized, connected devices that have been exponentially increasing will be connected to communication networks, and it is accordingly expected that enhanced functions and performances of 5G mobile communication systems and integrated operations of connected devices will be necessary. To this end, new research is scheduled in connection with eXtended Reality (XR) for efficiently supporting AR (Augmented Reality), VR (Virtual Reality), MR (Mixed Reality) and the like, 5G performance improvement and complexity reduction by utilizing Artificial Intelligence (AI) and Machine Learning (ML), AI service support, metaverse service support, and drone communication.

[0006] Furthermore, such development of 5G mobile communication systems will serve as a basis for developing not only new waveforms for providing coverage in terahertz bands of 6G mobile communication technologies, multi-antenna transmission technologies such as Full Dimensional MIMO (FD-MIMO), array antennas and large-scale antennas, metamaterial-based lenses and antennas for improving coverage of terahertz band signals, high-dimensional space multiplexing technology using OAM (Orbital Angular Momentum), and RIS (Reconfigurable Intelligent Surface), but also full-duplex technology for increasing frequency efficiency of 6G mobile communication technologies and improving system networks, AI-based communication technology for implementing system optimization by utilizing satellites and AI (Artificial Intelligence) from the design stage and internalizing end-to-end AI support functions, and next-generation distributed computing technology for implementing services at levels of complexity exceeding the limit of UE operation capability by utilizing ultra-high-performance communication and computing resources.

[0007] Considering the development of wireless communication from generation to generation, the technologies have been developed mainly for services targeting humans, such as voice calls, multimedia services, and data services. Following the commercialization of 5th-generation (5G) communication systems, it is expected that the number of connected devices will exponentially grow. Increasingly, these will be connected to communication networks. Examples of connected things may include vehicles, robots, drones, home appliances, displays, smart sensors connected to various infrastructures, construction machines, and factory equipment. Mobile devices are expected to evolve in various form-factors, such as augmented reality glasses, virtual reality headsets, and hologram devices. In order to provide various services by connecting hundreds of billions of devices and things in the 6th-generation (6G) era, there have been ongoing efforts to develop improved 6G communication systems. For these reasons, 6G communication systems are referred to as beyond-5G systems.

[0008] 6G communication systems, which are expected to be commercialized around 2030, will have a peak data rate of tera (1,000 giga)-level bps and a radio latency less than 100μsec, and thus will be 50 times as fast as 5G communication systems and have the 1 / 10 radio latency thereof.

[0009] In order to accomplish such a high data rate and an ultra-low latency, it has been considered to implement 6G communication systems in a terahertz band (for example, 95GHz to 3THz bands). It is expected that, due to severer path loss and atmospheric absorption in the terahertz bands than those in mmWave bands introduced in 5G, technologies capable of securing the signal transmission distance (that is, coverage) will become more crucial. It is necessary to develop, as major technologies for securing the coverage, radio frequency (RF) elements, antennas, novel waveforms having a better coverage than orthogonal frequency division multiplexing (OFDM), beamforming and massive multiple input multiple output (MIMO), full dimensional MIMO (FD-MIMO), array antennas, and multiantenna transmission technologies such as large-scale antennas. In addition, there has been ongoing discussion on new technologies for improving the coverage of terahertz-band signals, such as metamaterial-based lenses and antennas, orbital angular momentum (OAM), and reconfigurable intelligent surface (RIS).

[0010] Moreover, in order to improve the spectral efficiency and the overall network performances, the following technologies have been developed for 6G communication systems: a full-duplex technology for enabling an uplink transmission and a downlink transmission to simultaneously use the same frequency resource at the same time; a network technology for utilizing satellites, high-altitude platform stations (HAPS), and the like in an integrated manner; an improved network structure for supporting mobile base stations and the like and enabling network operation optimization and automation and the like; a dynamic spectrum sharing technology via collision avoidance based on a prediction of spectrum usage; an use of artificial intelligence (AI) in wireless communication for improvement of overall network operation by utilizing AI from a designing phase for developing 6G and internalizing end-to-end AI support functions; and a next-generation distributed computing technology for overcoming the limit of user equipment (UE) computing ability through reachable super-high-performance communication and computing resources (such as mobile edge computing (MEC), clouds, and the like) over the network. In addition, through designing new protocols to be used in 6G communication systems, developing mechanisms for implementing a hardware-based security environment and safe use of data, and developing technologies for maintaining privacy, attempts to strengthen the connectivity between devices, optimize the network, promote softwarization of network entities, and increase the openness of wireless communications are continuing.

[0011] It is expected that research and development of 6G communication systems in hyper-connectivity, including person to machine (P2M) as well as machine to machine (M2M), will allow the next hyper-connected experience. Particularly, it is expected that services such as truly immersive extended reality (XR), high-fidelity mobile hologram, and digital replica could be provided through 6G communication systems. In addition, services such as remote surgery for security and reliability enhancement, industrial automation, and emergency response will be provided through the 6G communication system such that the technologies could be applied in various fields such as industry, medical care, automobiles, and home appliances.

[0012] In the ISAC technology, the sensing capability is directly proportional to the amount of air interface resources expended. Increasing the distance sensing range requires a single sensing signal to occupy more time resources, increasing the speed sensing range requires a sensing signal to be transmitted more frequently and also occupy more time resources, and high resolution requires the sensing signal to occupy more bandwidth. Therefore, if high resolution sensing of ultra-long distance and ultra-high speed 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, communication rates and latencies in the communication system are significantly degraded.

[0013] An object of an embodiment of the present disclosure is to provide a method performed by a first node in a communication system, the first node, and a storage medium which can better meet the requirements of wireless communication, and to achieve the object, the technical solutions provided by the embodiment of the present disclosure are as follows:

[0014] In accordance with an embodiment of the present disclosure, the present disclosure provides a method performed by a first node in a communication system, comprising: acquiring configuration information, the configuration information including information related to a data modulation scheme; determining a first angle related to data modulation based on the configuration information; and generating the baseband signal based on the first angle and generating a baseband signal based on the configuration information.

[0015] In accordance with an embodiment of the present disclosure, the above-mentioned generating a baseband signal based on the configuration information comprises: modulating a block of bits to be modulated based on the configuration information, to obtain a block of complex-valued modulated symbols; performing resource mapping based on the block of complex-valued modulated symbols and a first sequence, to generate the baseband signal, the first sequence being a sequence related to a sensing function.

[0016] In accordance with an embodiment of the present disclosure, the block of bits is modulated based on the configuration information and the above-described first angle.

[0017] The first angle is at least one of angles related to an argument of the modulated block of complex-valued modulated symbols.

[0018] In accordance with an embodiment of the present disclosure, the first angle includes a maximum constellation point phase difference (which may be referred to as a second angle or another name), and the maximum constellation point phase difference is an upper limit of an absolute value of a difference between the constellation point argument and the constellation point central argument.

[0019] In accordance with an embodiment of the present disclosure, the first angle includes a constellation point central argument (which may be referred to as a third angle or another name).

[0020] In accordance with an embodiment of the present disclosure, an embodiment of the present disclosure provides a method performed by a second node in a wireless communication system, comprising: determining a data modulation scheme and a first angle related to the data modulation; and modulating a block of bits to be modulated based on the data modulation scheme and the first angle, to obtain a block of complex-valued modulated symbols.

[0021] In accordance with an embodiment of the present disclosure, the data modulation scheme is a first modulation scheme, a second modulation scheme, a third modulation scheme, a fourth modulation scheme, a fifth modulation scheme, a sixth modulation scheme, or a seventh modulation scheme, and the first angle includes a second angle and a third angle .

[0022] In accordance with an embodiment of the present disclosure, in case of modulation of the first modulation scheme, bit is mapped to a complex-valued modulated symbol , according to:

[0023]

[0024] or

[0025]

[0026] or

[0027]

[0028] or

[0029]

[0030] In accordance with an embodiment of the present disclosure , in case of modulation of the second modulation scheme, bit is mapped to the complex-valued modulated symbol , according to:

[0031]

[0032] or

[0033]

[0034] or

[0035]

[0036] or

[0037]

[0038] In accordance with an embodiment of the present disclosure , in case of modulation of the third modulation scheme, the fourth modulation scheme, the fifth modulation scheme, the sixth modulation scheme, or the seventh modulation scheme, bit is mapped to the complex-valued modulated symbol , according to:

[0039]

[0040] or

[0041]

[0042] wherein is a modulation scheme identification, and identifies the third modulation scheme, the fourth modulation scheme, the fifth modulation scheme, the sixth modulation scheme, and the seventh modulation scheme, respectively;

[0043] for the third modulation scheme, ;

[0044] for the fourth modulation scheme,

[0045]

[0046] wherein , ;

[0047] for the fifth modulation scheme,

[0048]

[0049] wherein , ;

[0050] for the sixth modulation scheme,

[0051]

[0052] wherein , ;

[0053] for the seventh modulation scheme,

[0054]

[0055] wherein , .

[0056] In accordance with another embodiment of the present disclosure , an embodiment of the present disclosure provides a node in a wireless communication system, comprising a transceiver and at least one processor coupled to the transceiver, wherein the at least one processor is configured to perform the method provided by any of the embodiments of the present disclosure.

[0057] In accordance with an embodiment of the present disclosure, the node may be a first node or a second node.

[0058] In accordance with another embodiment of the present disclosure, an embodiment of the present disclosure also provides a computer-readable storage medium having stored therein a computer program which, when executed by a processor performs the method provided by any of the embodiments of the present disclosure.

[0059] In accordance with an embodiment of the present disclosure, there is provided a computer program product including a computer program which when executed by a processor, performs the method as provided in any of the alternative embodiments of the present disclosure.

[0060] Beneficial effects provided by the embodiments of the present disclosure will be described below in conjunction with specific embodiments.

[0061] To optimize the communication system and solve or improve one or more of the existing problems, an embodiment of the present disclosure provides a communication scheme (a method executed by a first node / a second node), which provides a completely new baseband signal generation method. In addition, in some alternative embodiments of the scheme, it is also possible to simultaneously transmit data on a sensing signal, which can greatly alleviate the problem of resource overhead and better meet requirements of the ISAC. The signal generation method provided in these alternative embodiments can enable the generated signal to have both a sensing function and a communication function, that is to say, the signal can realize the simultaneous and same-frequency transmission of a sensing signal and a data signal, and can enable the signal to have the capability of carrying data without significantly affecting the sensing performance of the signal, so that the ISAC with high resolution, an ultra-long distance sensing range and an ultra-high speed sensing range can be realized with a lower resource overhead.

[0062] Fig. 1 illustrates a structural diagram of a wireless network system to which an embodiment of the present disclosure is applicable;

[0063] Fig. 2 illustrates a structural diagram of an example base station according to the present disclosure;

[0064] Fig. 3 illustrates a structural diagram of an example user equipment according to the present disclosure;

[0065] Fig. 4 illustrates a flow diagram of a method performed by a first node according to an embodiment of the present disclosure;

[0066] Fig. 5 is a diagram of a constellation according to an embodiment of the present disclosure;

[0067] Fig. 6 illustrates a flow diagram of a communication method according to an embodiment of the present disclosure;

[0068] Figs. 7, 8, 9, 10, 11, 12, and 13 illustrate diagrams of constellations corresponding to various alternative data modulation schemes according to an embodiment of the present disclosure;

[0069] Figs. 14, 15, 16, and 17 illustrate principle diagrams of various alternative signal generation methods according to an embodiment of the present disclosure; and

[0070] Fig. 18 illustrates a structural diagram of an electronic device according to an embodiment of the present disclosure.

[0071] It may be advantageous to set forth definitions of certain words and phrases used throughout this disclosure. The term "couple" and its derivatives refer to any direct or indirect communication between two or more elements, whether those elements are in physical contact with one another. The terms "transmit," "receive," and "communicate," as well as derivatives thereof, encompass both direct and indirect communication. The terms "include" and "comprise," as well as derivatives thereof, mean inclusion without limitation. The term "or" is inclusive, meaning and / or. The phrase "associated with," as well as derivatives thereof, means to include, be included within, interconnect with, contain, be contained within, connect to or with, couple to or with, be communicable with, cooperate with, interleave, juxtapose, be proximate to, be bound to or with, have, have a property of, have a relationship to or with, or the like. 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 a combination of hardware and software and / or firmware. The functionality associated with any particular controller may be centralized or distributed, whether locally or remotely. The phrase "at least one of," when used with a list of items, means that different combinations of one or more of the listed items may be used, and only one item in the list may be needed. 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 A and B and C. Likewise, the term "set" means one or more. Accordingly, a set of items can be a single item or a collection of two or more items.

[0072] Moreover, various functions described below can be implemented or supported by one or more computer programs, each of which is formed from 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, sets of instructions, procedures, functions, objects, classes, instances, related data, or a portion thereof adapted for implementation in a suitable 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 capable of being accessed by a computer, such as read only memory (ROM), random access memory (RAM), a hard disk drive, a compact disc (CD), a digital video disc (DVD), or any other type of memory. A "non-transitory" computer readable medium excludes wired, wireless, optical, or other communication links that transport transitory electrical or other signals. A non-transitory computer readable medium includes media where data can be permanently stored and media where data can be stored and later overwritten, such as a rewritable optical disc or an erasable memory device.

[0073] Definitions for other certain words and phrases are provided throughout this disclosure. Those of ordinary skill in the art should understand that in many if not most instances, such definitions apply to prior as well as future uses of such defined words and phrases.

[0074] The figures included herein, and the various embodiments used to describe the principles of the present disclosure are by way of illustration only and should not be construed in any way to limit the scope of the disclosure. Further, those skilled in the art will understand that the principles of the present disclosure may be implemented in any suitably arranged wireless communication system.

[0075] FIGS. 1-3 below describe various embodiments of the present disclosure implemented in wireless communications systems. The descriptions of FIGS. 1-3 are not meant to imply physical or architectural limitations to the manner in which different embodiments may be implemented. Different embodiments of the present disclosure may be implemented in any suitably-arranged communications system.

[0076] FIG. 1 illustrates an example wireless network according to embodiments of the present disclosure. The embodiment of the wireless network shown in FIG. 1 is for illustration only. Other embodiments of the wireless network 100 could be used without departing from the scope of the present disclosure.

[0077] As shown in FIG. 1, the wireless network includes a base station (gNB or gNodeB) 101, a gNB 102, and a gNB 103. The gNB 101 communicates with the gNB 102 and the gNB 103. The gNB 101 also communicates with at least one network 130, such as the Internet, a proprietary Internet Protocol (IP) network, or other data network.

[0078] The gNB 102 provides wireless broadband access to the network 130 for a first plurality of user equipments (UEs) within a coverage area 120 of the gNB 102. The first plurality of UEs includes a UE 111, which may be located in a small business; a UE 112, which may be located in an enterprise (E); a UE 113, which may be located in a WiFi hotspot (HS); a UE 114, which may be located in a first residence (R1); a UE 115, which may be located in a second residence (R2); and a UE 116, which may be a mobile device (M), such as a cell phone, a wireless laptop, a wireless personal digital assistant (PDA), or the like. The gNB 103 provides wireless broadband access to the network 130 for a second plurality of UEs within a coverage area 125 of the gNB 103. The second plurality of UEs includes the UE 115 and the UE 116, as well as subscriber stations (SS, for example, UEs) 117, 118 and 119. In some embodiments, one or more gNBs 101-103 may communicate with each other and with the UEs 111-116 using existing wireless communication techniques, and one or more of the UE 111-119 may communicate directly with each other (e.g., UEs 117-119) using other existing or proposed wireless communication techniques.

[0079] 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 transmit point (TP), transmit-receive point (TRP), an enhanced (or "evolved") base station (eNodeB or eNB), a 5G base station (gNB), a macrocell, a femtocell, a wireless fidelity (WiFi) access point (AP), or other wirelessly enabled devices. Base stations may provide wireless access in accordance with one or more wireless communication protocols, e.g., 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 the sake of convenience, the various names for a base station-type apparatus and functionality are used interchangeably in this disclosure to refer to 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), subscriber station (SS), remote terminal, wireless terminal, receive point, or user equipment. For the sake of convenience, the various names for a user equipment-type device and functionality are used interchangeably in this disclosure to refer to remote wireless equipment that wirelessly accesses a BS, whether the UE is a mobile device (such as a mobile telephone or smartphone) or is normally considered a stationary device (such as a desktop computer or vending machine).

[0080] Dotted lines show the approximate extents of the coverage areas 120 and 125, which are shown as approximately circular for the purposes of illustration and explanation only. It should be clearly understood that the coverage areas associated with gNBs, such as the coverage areas 120 and 125, may have other shapes, including irregular shapes, depending upon the configuration of the gNBs and variations in the radio environment associated with natural and man-made obstructions.

[0081] As described in more detail below, one or more of the UEs 111-119 include circuitry, programing, or a combination thereof. In certain embodiments, and one or more of the gNBs 101-103 includes circuitry, programing, or a combination thereof.

[0082] Although FIG. 1 illustrates one example of a wireless network, various changes may be made to FIG. 1. For example, the wireless network could include any number of gNBs and any number of UEs in any suitable arrangement. Also, the gNB 101 could communicate directly with any number of UEs and provide those UEs with wireless broadband access to the network 130. Similarly, each gNB 102-103 could communicate directly with the network 130 and provide UEs with direct wireless broadband access to the network 130. Further, the gNBs 101, 102, and / or 103 could provide access to other or additional external networks, such as external telephone networks or other types of data networks.

[0083] FIG. 2 illustrates an example base station according to embodiments of the present disclosure. The embodiment of the gNB 102 illustrated in FIG. 2 is for illustration only, and the gNBs 101 and 103 of FIG. 1 could have the same or similar configuration. However, gNBs come in a wide variety of configurations, and FIG. 2 does not limit the scope of the present disclosure to any particular implementation of a gNB.

[0084] As shown in FIG 2, the gNB 102 includes multiple antennas 200a-200n, multiple 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 207.

[0085] The RF transceivers 201a-201n receive, from the antennas 200a-200n, incoming RF signals, such as signals transmitted by UEs in the network 100. 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 processed baseband signals by filtering, decoding, and / or digitizing the baseband or IF signals. The RX processing circuitry 204 transmits the processed baseband signals to the controller / processor 205 for further processing.

[0086] The TX processing circuitry 203 receives analog or digital data (such as voice data, web data, electronic mail, or interactive video game data) from the controller / processor 205. The TX processing circuitry 203 encodes, multiplexes, and / or digitizes the outgoing baseband data to generate processed baseband or IF signals. The RF transceivers 201a-201n receive the outgoing processed baseband or IF signals from the TX processing circuitry 203 and up-converts the baseband or IF signals to RF signals that are transmitted via the antennas 201a-201n.

[0087] The controller / processor 205 can include one or more processors or other processing devices that control the overall operation of the gNB 102. For example, the controller / processor 205 could control the reception of forward channel signals and the transmission of reverse channel signals by the RF transceivers 201a-201n, the RX processing circuitry 204, and the TX processing circuitry 203 in accordance with well-known principles. The controller / processor 205 could support additional functions as well, such as more advanced wireless communication functions.

[0088] For instance, the controller / processor 205 could support beam forming or directional routing operations in which outgoing signals from multiple antennas 200a-200n are weighted differently to effectively steer the outgoing signals in a desired direction. Any of a wide variety of other functions could be supported in the gNB 102 by the controller / processor 205.

[0089] The controller / processor 205 is also capable of executing programs and other processes resident in the memory 206, such as an operating system (OS). The controller / processor 205 can move data into or out of the memory 206 as required by an executing process.

[0090] The controller / processor 205 is also coupled to the backhaul or network interface 207. The backhaul or network interface 207 allows the gNB 102 to communicate with other devices or systems over a backhaul connection or over a network. The interface 207 could support communications over any suitable wired or wireless connection(s). For example, when the gNB 102 is implemented as part of a cellular communication system (such as one supporting 5G, LTE, or LTE-A), the interface 207 could allow the gNB 102 to communicate with other gNBs over a wired or wireless backhaul connection. When the gNB 102 is implemented as an access point, the interface 207 could allow the gNB 102 to communicate over a wired or wireless local area network or over a wired or wireless connection to a larger network (such as the Internet). The interface 207 includes any suitable structure supporting communications over a wired or wireless connection, such as an Ethernet or RF transceiver.

[0091] The memory 206 is coupled to the controller / processor 205. Part of the memory 206 could include a random access memory (RAM), and another part of the memory 206 could include a Flash memory or other read only memory (ROM).

[0092] Although FIG. 2 illustrates one example of gNB 102, various changes may be made to FIG. 2. For example, the gNB 102 could include any number of each component shown in FIG. 2. As a particular example, an access point could include a number of interfaces 207, and the controller / processor 205 could support routing functions to route data between different network addresses. As another particular example, while shown as including a single instance of TX processing circuitry 203 and a single instance of RX processing circuitry 204, the gNB 102 could include multiple instances of each (such as one per RF transceiver). Also, various components in FIG. 2 could be combined, further subdivided, or omitted and additional components could be added according to particular needs.

[0093] FIG. 3 illustrates an example user equipment according to embodiments of the present disclosure. The embodiment of the UE 116 illustrated in FIG. 3 is for illustration only, and the UEs 111-115 and 117-119 of FIG. 1 could have the same or similar configuration. However, UEs come in a wide variety of configurations, and FIG. 3 does not limit the scope of the present disclosure to any particular implementation of a UE.

[0094] As shown in FIG. 3, the UE 116 includes an antenna 301, a radio frequency (RF) transceiver 302, TX processing circuitry 303, a microphone 304, and receive (RX) processing circuitry 305. The UE 116 also includes a speaker 306, a controller or processor 307, an input / output (I / O) interface (IF) 308, a touchscreen display 310, and a memory 311. The memory 311 includes an OS 312 and one or more applications 313.

[0095] The RF transceiver 302 receives, from the antenna 301, an incoming RF signal transmitted by an gNB of the network 100. 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 circuitry 305, which generates a processed baseband signal by filtering, decoding, and / or digitizing the baseband or IF signal. The RX processing circuitry 305 transmits the processed baseband signal to the speaker 306 (such as for voice data) or to the processor 307 for further processing (such as for web browsing data).

[0096] The TX processing circuitry 303 receives analog or digital voice data from the microphone 304 or other outgoing baseband data (such as web data, e-mail, or interactive video game data) from the processor 307. The TX processing circuitry 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 circuitry 303 and up-converts the baseband or IF signal to an RF signal that is transmitted via the antenna 301.

[0097] The processor 307 can include one or more processors or other processing devices and execute the OS 312 stored in the memory 311 in order to control the overall operation of the UE 116. For example, the processor 307 could control the reception of forward channel signals and the transmission of reverse channel signals by the RF transceiver 302, the RX processing circuitry 305, and the TX processing circuitry 303 in accordance with well-known principles. In some embodiments, the processor 307 includes at least one microprocessor or microcontroller.

[0098] The processor 307 is also capable of executing other processes and programs resident in the memory 311, such as processes for CSI reporting on uplink channel. The processor 307 can move data into or out of the memory 311 as required by an executing process. In some embodiments, the processor 307 is configured to execute the applications 313 based on the OS 312 or in response to signals received from gNBs or an operator. The processor 307 is also coupled to the I / O interface 309, which provides the UE 116 with the ability to connect to other devices, such as laptop computers and handheld computers. The I / O interface 309 is the communication path between these accessories and the processor 307.

[0099] The processor 307 is also coupled to the touchscreen display 310. The user of the UE 116 can use the touchscreen display 310 to enter data into the UE 116. The touchscreen display 310 may be a liquid crystal display, light emitting diode display, or other display capable of rendering text and / or at least limited graphics, such as from web sites.

[0100] The memory 311 is coupled to the processor 307. Part of the memory 311 could include RAM, and another part of the memory 311 could include a Flash memory or other ROM.

[0101] Although FIG. 3 illustrates one example of UE 116, various changes may be made to FIG. 3. For example, various components in FIG. 3 could be combined, further subdivided, or omitted and additional components could be added according to particular needs. As a particular example, the processor 307 could be divided into multiple processors, such as one or more central processing units (CPUs) and one or more graphics processing units (GPUs). Also, while FIG. 3 illustrates the UE 116 configured as a mobile telephone or smartphone, UEs could be configured to operate as other types of mobile or stationary devices.

[0102] How to optimize a communication system and improve spectrum utilization of the communication system has been a hot issue concerned by practitioners.

[0103] In addition, in recent years, as operating frequency bands of the communication system are increasingly developing towards high frequency, the communication system will inevitably conflict with high frequency radar system in terms of resources. However, there is a high degree of similarity between the communication system and the radar system regardless of the background theory knowledge or the hardware structure, so theoretically two seemingly independent systems can be integrated to achieve the function enhancement of the communication system and the improvement of the spectrum efficiency, achieving the mutual benefit and win-win effect. Therefore, integrated sensing and communications (ISAC) is a hot research direction in the field of communication and one of 6G candidate technologies. A core purpose of an ISAC system is to use the same set of hardware devices, on the basis of ensuring basic communication functions, at the cost of as little resource overhead as possible, to achieve the perception of a surrounding environment. The perceived content includes the distance, orientation, speed or even kind of objects in the surrounding environment, etc. Unlike the technology for locating an access terminal in a conventional communication system, the ISAC technology can further realize the perception of various information about a non-access object, which greatly increases the ability of the communication system to dynamically adjust its operating state (scheduling, beam management, early warning for an access terminal, etc.) according to the surrounding environment.

[0104] Among potential application scenarios of the ISAC, most of the application scenarios require the ISAC system to have high resolution, ultra-long distance sensing range and ultra-high speed sensing range at the same time. However, regardless of distance-aware, speed-aware, or high-resolution, the sensing capability is directly proportional to the amount of air interface resources expended. Increasing the distance sensing range requires a single sensing signal to occupy more time resources, increasing the speed sensing range requires a sensing signal to be transmitted more frequently and also occupy more time resources, and high resolution requires the sensing signal to occupy more bandwidth. Therefore, if high resolution sensing of ultra-long distance and ultra-high speed 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, communication rates and latencies in the communication system are significantly degraded.

[0105] Therefore, in the ISAC technology, how to improve the utilization rate of resources under the condition of satisfying the signal perception capability is also one of the technical problems to be considered and solved.

[0106] The method provided by the embodiment of the present disclosure may be performed by any electronic device / node, e.g. a user equipment (UE) in a wireless communication system, or a network node, where the network node may be a base station or other network node (e.g. a transmission / reception point TRP).

[0107] It should be noted that some of term names referred to in the embodiments of the present disclosure may use the term names already existing in the communication standard, some of the term names may be newly added or defined term names, which may be replaced by other term names in the future communication standard, or may be described in other ways (such as a textual description). The names or nomenclatures of various information / messages / parameters / configurations referred to in the embodiments of the present disclosure are not exclusive, and in theory the names or nomenclatures of the information / messages / parameters / configurations may vary as long as the role of the information / messages / parameters / configurations, the contents involved, or the explanation or description of the information / messages / parameters / configurations can correspond or be associated.

[0108] For example, configuration information in the embodiments of the present disclosure may also be referred to as configuration, first message or other message or signal configuration information, and information for indicating certain contents may also be referred to as indication information. For example, information indicating whether to perform phase rotation may be referred to as phase rotation indication information, and may also be referred to as phase rotation indication identification or phase rotation identification, etc. A signal generated by using a scheme provided by an embodiment of the present disclosure may be referred to as a signal, a sensing signal, a sensing integrated signal, an integrated signal, a physical signal, or other name.

[0109] The technical solutions provided by the present disclosure and the technical effects brought about by the technical solutions are explained below through the description of various alternative embodiments. In the absence of conflict or contradiction, the following embodiments may be referred to, referenced, or combined with each other, and the description of the same terms, similar features, and similar steps in different embodiments will not be repeated. With regard to the interaction steps between different nodes, a solution corresponding to a network node on the other side can be obtained based on the solution description of the network node at one side. For example, one network node receives configuration information from another network node, and accordingly it can be inferred that the other network node transmits the configuration information to the above-mentioned one network node, one node (a transmitter) transmits a signal, and the corresponding node (a receiver) receives the signal. The signal transmitted by the transmitter can be a modulated signal with data, and after receiving the signal, the receiver uses a corresponding demodulation method to demodulate the signal to obtain the data therein. In an embodiment that includes multiple steps, embodiments of the present disclosure are not limited solely to the order in which the multiple steps are performed if there is no explicit ordering of the multiple steps.

[0110] Alternative embodiments of the method provided by the present disclosure are further described below in connection with the principles of schemes provided by the present disclosure and several alternative embodiments, the steps of which may be combined or substituted with each other without conflict.

[0111] Fig. 4 illustrates a method performed by a first node in a wireless communication system according to an embodiment of the present disclosure, which is a new baseband signal generation method. The first node is a transmitting node / transmitter. Optionally, the first node can be a user equipment (UE), and the first node can also be an intermediate node in a communication system, such as a relay node in a relay network, and can also be a base station. As shown in Fig. 4, the method may comprise:

[0112] Step S410: acquiring configuration information, the configuration information including information related to a data modulation scheme.

[0113] Step S420: generating a baseband signal based on the configuration information.

[0114] When the first node is a UE or other nodes other than a base station, the above acquired configuration information may be configuration information transmitted by the base station which is received by the UE. When the first node is a base station, the above-mentioned step S410 may be realized as the base station determining information related to data modulation. At this point, the above-mentioned steps S410 and S420 provided by the embodiment of the present disclosure may be described as: the base station generating a baseband signal based on the information related to the data modulation.

[0115] In the above-mentioned step S420, generating a baseband signal based on the configuration information may comprise: determining a first angle associated with the data modulation based on the configuration information, and generating a baseband signal based on the first angle.

[0116] Optionally, a block of bits to be modulated (namely, data needing to be modulated, which may also be directly referred to as a bit block) may be modulated based on the configuration information (for example, based on the configuration information and the first angle) to obtain a block of complex-valued modulated symbols, and resource mapping is performed based on the block of complex-valued modulated symbols to generate a baseband signal.

[0117] The block of bits to be modulated is a bit stream of data to be transmitted, i.e. a bit data stream, and each bit in the block of bits has a value of 0 or 1. Optionally, the block of bits to be modulated may be a scrambled bit block, and the manner where a bit block is scrambled may be as specified in existing standard protocols.

[0118] In an embodiment of the present disclosure, the information related to the data modulation scheme, which may also be referred to as a first configuration, may also be referred to as a configuration related to a communication function, a configuration related to data, or modulation configuration information, or other names. Based on the configuration, the first node may determine one or more parameters related to the data modulation. Optionally, at least a data modulation scheme can be determined based on the configuration, and the first node modulates the data to be transmitted according to the configuration to obtain a block of complex-valued modulated symbols.

[0119] The first angle is an angle related to an argument of the modulated block of complex-valued modulated symbols. Optionally, the first angle may include angle information capable of determining an argument (constellation point argument) of each complex-valued modulated symbol in the modulated block of complex-valued modulated symbols. Optionally, the first angle may include at least one of a maximum constellation point phase difference or a constellation point central argument, where the maximum constellation point phase difference is an upper limit of an absolute value of a difference between the constellation point argument and the constellation point central argument, i.e. an absolute value of a difference between an argument of any complex-valued modulated symbol and the constellation point central argument is not larger than the phase difference. Optionally, the value of the maximum constellation point phase difference may be related to communication conditions. For example, the phase difference may be relatively small when the channel quality is good and relatively large when the channel quality is relatively poor. The relevant contents for the maximum constellation point phase difference and the constellation point central argument will be described later.

[0120] In the embodiment of the present disclosure, based on the above-mentioned configuration information, the first node can determine which modulation scheme is specifically used for the data modulation scheme, and can also determine a corresponding first angle, and then modulate the data to be transmitted based on the determined data modulation scheme and the first angle.

[0121] The configuration information should at least include relevant information capable of determining the data modulation scheme and the above-mentioned first angle, and the information may be explicit notification / indication information or implicit information. For example, the configuration information may directly contain an identification of the first angle and the data modulation scheme. For another example, the configuration information may include an index or mark, and according to the index or mark, the data modulation scheme and the corresponding first angle can be determined by looking up a table or other agreed ways.

[0122] In an alternative embodiment of the present disclosure, the above-mentioned resource mapping based on a block of complex-valued modulated symbols to generate a baseband signal may comprise: generating a baseband signal based on a resource mapping of the block of complex-valued modulated symbols with a first sequence, where the first sequence is a sequence related to a sensing function.

[0123] In the embodiment of the present disclosure, the first sequence may also be referred to as a perceptual sequence, a sequence related to perception, or a sequence for generating a sensing signal, etc. As to which sequence the first sequence is specific, the embodiment of the present disclosure is not intended to be limiting and may in theory be any sequence that can be used for a sensing function. For example, the first sequence may include, but is not limited to, a Chirp sequence or a chaotic frequency modulation sequence. The method for generating the first sequence is not limited in the present disclosure, and optionally, the above-mentioned configuration information including information related to the data modulation may further include information related to the first sequence, namely, information for generating the first sequence, and the first node may generate the first sequence according to the information. Of course, the information relating 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 may be generated in real time.

[0124] In the embodiment of the present disclosure, resources for data transmission are the same resources as the resources for the sensing function, where the resources may be referred to as resources allocated for signal / physical signal transmission. Optionally, the resource may include at least one of a time domain resource and a frequency domain resource, corresponding to the resource mapping of the embodiment of the present disclosure.

[0125] In the embodiment of the present disclosure, the specific manner where the first node acquires the resource 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, and the present disclosure also does not define the specific way for the base station to configure the resources. Optionally, the above-mentioned configuration information may further include a resource configuration, and the UE learns resources used for signal transmission according to the resource configuration. Likewise, the resource configuration can also be transmitted to the UE by the base station via other configuration information different from the above-mentioned configuration information.

[0126] Optionally, the first node may also be a network node, such as a base station, and the base station may determine resources for physical signal transmission on its own according to resource configuration conditions of the base station.

[0127] In an embodiment of the present disclosure, different configurations / information may be included in the same configuration information, or may also be included in different configuration information. For example, the configuration information in step S410 described above includes one or more of information related to a data modulation scheme, information related to resources, and information for generating the first sequence. For another example, the first node may acquire first configuration information and second configuration information respectively, where the first configuration information is configuration information related to the sensing function, which may include but is not limited to at least one of information for the first sequence and resource configuration for physical signal transmission, and the second configuration information may include 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 scheme and resource configuration for physical signal transmission.

[0128] Optionally, the configuration information in step S410 may include at least one of:

[0129] first information, where the information is related to a data modulation scheme, and optionally, the information can be information indicating the data modulation scheme;

[0130] second information, where the information is related to a minimum code distance between constellation points, and optionally, the information can be information indicating the minimum code distance between the constellation points;

[0131] third information, where the information is related to a constellation point central argument, and optionally, the information can be information indicating the central constellation point argument;

[0132] third information, where the information is related to a large constellation point phase difference, and optionally, the information can be information indicating a maximum constellation point phase difference, where the maximum constellation point phase difference is an upper limit of an absolute value of a difference between a constellation point argument and a constellation point central argument;

[0133] information for indicating whether to perform phase rotation;

[0134] fifth information, where the information is related to the modulation order, such as information for indicating the modulation order;

[0135] a first index, where the first index is for determining at least one of the data modulation schemes, the constellation point central argument, the maximum constellation point phase difference, the stepwise behavioral rotation, and the modulation order.

[0136] The first information, which may also be referred to as modulation scheme indication information, may be an explicit indication. For example, the indication information may be a modulation scheme identification, such as an identification or an index of the modulation scheme. As an example, assuming that the modulation scheme can be one of four modulation schemes, the modulation scheme can be indicated by two bits, for example, 00, 01, 10 and 11 respectively identify a modulation scheme, and the first node learns which modulation scheme to use according to the values of the two bits carried in the configuration information. Alternatively, the modulation scheme indication information may also be an implicit indication. For example, a specific modulation scheme is associated with one or more other configuration parameters, and the first node may determine which modulation scheme should be used according to the other parameters. In this case, the modulation scheme indication information may be other parameters.

[0137] In an alternative embodiment of the present disclosure, the data modulation scheme may relate to a physical channel, and it is pre-defined that the physical channel a uses modulation scheme 1 and the physical signal b uses modulation scheme 2, then the first node may determine the data modulation scheme to be used according to the physical channel corresponding to the data to be transmitted.

[0138] In the embodiment of the present disclosure, the constellation points are points on a constellation, which is a combination of all symbol points of the modulated signal on an In-phase Quadrature (IQ) plane, where one constellation point corresponds to one complex-valued modulated symbol. The argument of a constellation point, i.e. the phase angle of the constellation point, is the angle that the constellation point makes with the horizontal axis, and the magnitude (or amplitude) of the constellation point, i.e. the magnitude of a complex-valued modulated symbol, is the distance of the constellation point from the origin of the constellation.

[0139] The constellation point central argument is the angle between the symmetry axis of each constellation point in the constellation and a horizontal axis. In the embodiment of the present disclosure, constellation points in a constellation corresponding to a block of complex-valued modulated symbols obtained by modulation are symmetrically distributed along an axis pair, the symmetry axis is a symmetry axis passing through the origin of the constellation, and an angle between the axis and the horizontal axis is an angle between the center of the constellation points.

[0140] 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 central argument, and it can be understood that the upper limit of the absolute value of the difference between the argument / phase angle of each constellation point in the constellation and the central argument will not be exceeded by the absolute value of the difference between the argument of any constellation point in the constellation and the central argument. Optionally, the maximum constellation point phase difference is typically no more than a certain angle, such as no more than 45 degrees, and optionally the maximum constellation point phase difference may be no more than 45 degrees or an angle around 45 degrees, such as slightly more than 45 degrees.

[0141] In the example of a constellation shown in Fig. 5, there are two constellation points A 510 and B 520 in the constellation, E 530 (a length of a connecting line between the constellation points and the origin) represents the magnitude of the constellation point, and 540 in Fig. 5 represents the constellation point central argument, and represents the maximum constellation point phase differences, and the argument of any constellation point satisfies .

[0142] The parameters of the constellation points described in the embodiment of the present disclosure may all be referred to as the parameters of the complex-valued modulated symbols. For example, arguments of the constellation point may be referred to as arguments of the complex-valued modulated symbols, and the average power of the complex-valued modulated symbols may be referred to as the average power of the constellation points.

[0143] The above-mentioned minimum code distance refers to a minimum distance among distances between constellation points in a constellation. In the embodiment of the present disclosure, there may be a corresponding relationship between the minimum code distance and the maximum constellation point phase difference, namely, the minimum code distance and the maximum constellation point phase difference satisfy a specific relationship. The maximum constellation point phase difference may be determined according to the minimum code distance, and the minimum code distance may be determined according to the maximum constellation point phase difference.

[0144] Likewise, one or more of the above-mentioned second information, third information and fourth information may be implicit indication information or explicit indication information. For example, the configuration information includes the minimum code distance or an indication of the minimum code distance, which information implicitly indicates the maximum constellation point phase difference.

[0145] The fifth information, which may also be referred to as modulation order indication information, may be used to determine the modulation order of the modulation scheme. Optionally, the modulation order of the different modulation schemes may be configured or pre-agreed. Optionally, the same modulation scheme may correspond to one or more modulation orders, and the modulation order of the current modulation scheme may be determined according to the modulation order indication information.

[0146] In the embodiment of the present disclosure, the above-mentioned information for indicating whether to perform phase rotation, i.e. the phase rotation indication information, is used for indicating whether to perform phase rotation when performing data modulation. In the embodiment of the present disclosure, for one data modulation scheme, if phase rotation is indicated, it may be agreed in advance how to do so. That is, for one modulation scheme, the mapping of bits to the block of complex-valued modulated symbols with phase rotation and the mapping of bits to the block of complex-valued modulated symbols without phase rotation are well defined.

[0147] The phase rotation in the embodiment of the present disclosure may be referred to as a stepped phase rotation that affects at least the modulation of at least a portion of the bits in a block of bits. Optionally, for the same data modulation scheme, phase rotation may affect at least one of the phase or magnitude of the mapped complex-valued modulated symbols as compared to no phase rotation. That is, the stepped phase rotation may be understood to mean that when using a data modulation scheme in which the phase rotation is performed, not all the mapping of bits in a block of bits to a block of complex-valued modulated symbols will be phase rotated, and whether the mapping of a bit to a complex-valued modulated symbol actually performs the phase rotation is related to the serial number of the bit in the block of bits, e.g. even-numbered bits will be phase rotated, and odd-numbered bits will not be phase rotated, or vice versa.

[0148] The first index, optionally referred to as a first identification or other name, may be an indication value based on which one or more of the parameters relating to data modulation may be determined. Optionally, the parameters related to data modulation may be determined based on the first index and the table / mapping relationship. For example, each row in the table has an index corresponding to a data modulation scheme, and different rows correspond to different data modulation schemes or at least one parameter of the corresponding data modulation scheme 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 scheme can be determined by looking up the table. The embodiment of the present disclosure is not limited with regard to the specific acquisition method of a table / mapping relationship, and optionally, the table may be pre-configured or well agreed.

[0149] Table 1

[0150]

[0151] Optionally, in an embodiment of the present disclosure, for each data modulation scheme, the specific modulation procedure of the modulation scheme may also be predetermined. That is, as soon as which modulation scheme is determined, the first node knows how to specifically map the block of bits to the block of complex-valued modulated symbols. For example, the modulation scheme is modulation scheme A, and after the first node determines the modulation scheme, a mapping relationship of data bits corresponding to the modulation scheme to complex-valued modulated symbols is determined.

[0152] In the embodiment of the present disclosure, after acquiring configuration information related to a data modulation scheme, a first node may modulate a block of bits to be transmitted / modulated (also referred to as a bit stream or a bit sequence, etc.) based on the configuration information to obtain a block of complex-valued modulated symbols. Optionally, the block of bits to be modulated can be represented as , where represent the number of bits in the block of bits, (namely, the number of bits in a codeword to be transmitted on a physical channel), can be scrambled before modulating the block of bits to obtain scrambled bit blocks ), and then the scrambled bit blocks are modulated by using corresponding modulation schemes based on the above-mentioned configuration information to obtain blocks of complex-valued modulated symbols .

[0153] The solution provided by the embodiment of the present disclosure is that after a block of complex-valued modulated symbols is obtained through data modulation, a baseband signal which has both a sensing function and can realize data transmission can be obtained by fusing the block of complex-valued modulated symbols and a perceptual sequence and resource mapping, so that the generated baseband signal can have the functions of sensing and data transmission at the same time under the condition of paying for the same resource, and the resource utilization rate can be effectively improved.

[0154] A baseband signal generated by using a scheme provided by an embodiment of the present disclosure may also be referred to as a physical signal, a sensing signal, a sensing signal with a data transmission function, or other names.

[0155] Optionally, to have an effect on the sensing performance as much as possible, the data modulation scheme in the embodiment of the present disclosure may be a modulation scheme satisfying a specific requirement, and when a complex-valued data block modulated by the modulation scheme is fused with a perceptual sequence, the complex-valued modulated symbol does not greatly change the magnitude and phase of the sensing signal, and a small fluctuation in the magnitude and / or phase of the sensing signal does not significantly affect the sensing performance, so that the purpose of transmitting data on the sensing signal can be achieved. Optionally, the information relating to data modulation may satisfy at least one of:

[0156] an absolute value of a difference between an argument of any constellation point and the constellation point central argument being not greater than the maximum constellation point phase difference;

[0157] there being a corresponding relationship between the minimum code distance of constellation points and the maximum constellation point phase difference;

[0158] an average power of the constellation point being a first value;

[0159] an argument of the constellation point being less than or equal to a second value; and

[0160] a magnitude of the constellation point being less than or equal to a third value.

[0161] With regard to the first node, each item of information in at least one item satisfied by the above-mentioned data modulation scheme may be agreed in advance, or may be learned by the first node according to the configuration information. The at least one item may be understood as modulation scheme constraint information or constraint condition. Based on the constraint information, the generated baseband signal can not only have good sensing performance, but also can transmit data.

[0162] Optionally, the absolute value of the difference between the argument of any constellation point and the constellation point central argument is not greater than the maximum constellation point phase difference, or the constellation point argument is less than or equal to the second value, and it can be constrained that the phase angle of the complex-valued modulated symbols obtained by data modulation is limited within a certain argument range, and then the complex-valued modulated symbols do not greatly change the phase of the perception signal when the perception sequence and the block of complex-valued modulated symbols are subjected to block combination (such as multiplication) and resource mapping.

[0163] Optionally, the average power of the constellation points is a first value (which is typically a relatively small value, such as 1), or the magnitude of the constellation points is less than or equal to a third value (which may be a pre-agreed value or a configured value), and the magnitude of the complex-valued modulated symbols obtained by data modulation (e.g. the amplitudes of the complex-valued modulated symbols are all centered around 1) may be constrained not to significantly change the magnitude of the sensing signal.

[0164] According to the principle of signal processing, if there are small fluctuations in the magnitude and / or phase of the sensing signal, it will not have a significant impact on the sensing performance. Based on this, an embodiment of the present disclosure provides an inventive approach of using these allowed magnitudes and / or phases to transmit data. By defining the magnitude and / or phase of the complex-valued modulated symbol within a certain range, the complex-valued modulated symbol does not greatly change the magnitude and / or phase of the sensing signal, thereby achieving the purpose of transmitting data on the sensing signal, so that the communication resources used for the sensing function can also transmit data, thereby improving resource utilization.

[0165] Optionally, performing resource mapping on the basis of the block of complex-valued modulated symbols and the first sequence to generate a baseband signal, comprises at least one of modes:

[0166] Mode 1: multiplying a block of complex-valued modulated symbols by a first sequence, performing resource mapping on a result after multiplication, and generating a baseband signal based on a result after resource mapping;

[0167] Mode 2: performing resource mapping on a block of complex-valued modulated symbols, multiplying a result after resource mapping with a first sequence, and generating a baseband signal based on a result after multiplication;

[0168] Mode 3: performing resource mapping on the first sequence, mapping complex-valued modulated symbols onto a resource / resource grid to which the first sequence has been mapped, and generating a baseband signal based on a result after resource mapping.

[0169] Optionally, before performing resource mapping based on the block of complex-valued modulated symbols and the first sequence, further comprises: performing at least one of layer mapping, transform precoding, and precoding on the block of complex-valued modulated symbols.

[0170] That is, after modulating a block of bits to obtain a block of complex-valued modulated symbols, at least one of layer mapping, transform precoding processing or precoding processing can be performed on the block of complex-valued modulated symbols first, such as performing precoding after performing layer mapping, or performing precoding after performing layer mapping and transform precoding, and then performing fusion and resource mapping based on the processed block of complex-valued modulated symbols and the perceptual sequence. Among other things, resource mapping may include mapping to virtual resource blocks and / or mapping to physical resource blocks.

[0171] Optionally, whether to perform transform precoding may be determined by the type of waveform on which the physical signal is generated, and if the signal waveform is a discrete Fourier transform-spread OFDM (DFT-s-OFDM) waveform, the block of complex-valued modulated symbols may be first subjected to transform precoding processing and then to precoding processing. For other waveforms, such as a cyclic prefix orthogonal frequency division multiplexing (CP-OFDM) waveform, a precoding processing may be performed.

[0172] Optionally, the conventions in existing communication protocols can be followed whether the block of complex-valued modulated symbols is subjected to transform precoding processing, layer mapping, transform precoding and the specific implementation of precoding.

[0173] Optionally, the resources allocated for the physical signal may be time-frequency resources. The resources may include at least one OFDM symbol in the time domain and at least one subcarrier in the frequency domain.

[0174] With regard to the above-mentioned mode 1, the block of complex-valued modulated symbols can be multiplied by the first sequence before performing resource mapping, and optionally, the block of complex-valued modulated symbols can be multiplied by the first sequence by the following expression:

[0175]

[0176] where and represent the number of sub-carriers allocated for a signal and the number of orthogonal frequency division multiplexing (OFDM) symbols, respectively, represents a block of complex-valued modulated symbols, or a complex-valued symbol block after performing at least one of transform precoding and precoding on the block of complex-valued modulated symbols, represents a first sequence, and for any value of n, represents an (n + 1)th element in the first sequence, and represents a result after multiplication.

[0177] With regard to the above-mentioned mode 2, a block of complex-valued modulated symbols (or an amplitude symbol block after performing at least one of transform precoding and precoding) can be resource mapped firstly, and then a mapped result is multiplied by a first sequence. Optionally, the mapped result can be multiplied by the first sequence in the following manner:

[0178]

[0179] where,

[0180] where and represent the number of sub-carriers and the number of OFDM symbols allocated for a signal, respectively, represents a sub-carrier index, , represents an OFDM symbol index, , represents a first sequence, represents a mapped result of a complex-valued modulated symbol mapped onto a resource element with indexes and , and represents a result after multiplication.

[0181] Optionally, the above-mentioned sub-carrier index and OFDM symbol index may be indexes in a resource allocated by a signal, for example, the number of allocated sub-carriers is 3, and identifies the first sub-carrier of 3 sub-carriers. Optionally, the plurality of subcarriers may or may not be contiguous, and the embodiment of the present disclosure is not intended to be limiting.

[0182] With regard to the above-mentioned mode 3, the scheme can also be referred to as a joint mapping method, and in the scheme, resource mapping can be performed on a perceptual sequence first, and then joint resource mapping can be performed on the mapped result and the complex-valued modulated symbol. Optionally, in the scheme, resource mapping may be performed on the first sequence based on the following expression:

[0183]

[0184]

[0185] where, is a relative subcarrier sequence number / index within a bandwidth allocated for a physical signal, is a relative sequence number / index of a OFDM symbol allocated for the physical signal, is a first OFDM symbol allocated for the physical signal, is a constant, and may be a constant determined by power allocation.

[0186] After obtaining the mapped result for the first sequence, the complex-valued modulated symbols may optionally be mapped onto the resources to which the first sequence has been mapped, based on the following expression:

[0187]

[0188] where represents a mapped result of mapped onto a resource element with indexes and , represents a mapped result of a complex-valued modulated symbol mapped onto a resource element , and represents mapping a complex-valued modulated symbol onto a resource element to which an element in the first sequence has been mapped.

[0189] After obtaining a mapped result by using the resource mapping method of the above-mentioned mode 1, mode 2 or mode 3, a baseband signal can be generated according to the mapped signal according to a method specified in an existing communication standard protocol.

[0190] In the embodiment of the present disclosure, when performing resource mapping (resource mapping of a first sequence and / or block of complex-valued modulated symbols to resource mapping), the mapping to resource elements shall be in increasing order of first the index and then the index . The embodiment of the present disclosure also provide various alternative data modulation schemes. Optionally, the above-mentioned modulation is performed on a block of bits to be modulated based on configuration information to obtain a block of complex-valued modulated symbols, comprise:

[0191] based on the configuration information, using a first modulation scheme, a second modulation scheme, a third modulation scheme, a fourth modulation scheme, a fifth modulation scheme, a sixth modulation scheme or a seventh modulation scheme to modulate the block of bits to obtain a block of complex-valued modulated symbols.

[0192] With regard to the above-mentioned specific modulation scheme names of the first modulation scheme, the second modulation scheme, the third modulation scheme, the fourth modulation scheme, the fifth modulation scheme, the sixth modulation scheme or the seventh modulation scheme, the embodiment of the present disclosure is not only limited, but can be any name in theory. Optionally, the first modulation scheme may be called sector-binary phase shift keying (sector-BPSK), the modulation order may be 1, and the second modulation scheme may be called sector-binary pulse magnitude modulation (sector-2PAM), the modulation order of which may be 1.

[0193] Optionally, in the case of modulation of the first modulation scheme, the bit is mapped to complex-valued modulated symbol , according to:

[0194]

[0195] or

[0196]

[0197] or

[0198]

[0199] or

[0200]

[0201] wherein is the constellation point central argument, and is the maximum constellation point phase difference.

[0202] Optionally, in the case of modulation of the second modulation scheme, the bit is mapped to complex-valued modulated symbol , according to:

[0203]

[0204] or

[0205]

[0206] or

[0207]

[0208] or

[0209]

[0210] Optionally, in the case of modulation of the third modulation scheme, the fourth modulation scheme, the fifth modulation scheme, the sixth modulation scheme, or the seventh modulation scheme, bit is mapped to a complex-valued modulated symbol , according to:

[0211]

[0212] or

[0213]

[0214] where is a modulation scheme identification, and identifies the third modulation scheme, the fourth modulation scheme, the fifth modulation scheme, the sixth modulation scheme, and the seventh modulation scheme, respectively;

[0215] Optionally, for the third modulation scheme, .

[0216] Optionally, for the fourth modulation scheme,

[0217]

[0218] wherein , .

[0219] Optionally, for the fifth modulation scheme,

[0220]

[0221]

[0222] wherein , .

[0223] Optionally, for the sixth modulation scheme,

[0224]

[0225] wherein , .

[0226] Optionally, for the seventh modulation scheme,

[0227]

[0228] wherein , .

[0229] In each of the above formulas, is the constellation point central argument, and is the maximum constellation point phase difference.

[0230] It should be noted that the names of and may also be other names, such as a first angle and a second angle, or a first argument and a second argument, or a first phase angle and a second phase angle, etc. and may be determined based on the configuration information. Optionally, the configuration associated with the data modulation in the configuration information should include at least indication information of and . Of course, if is 0, for example, is pre-determined to be 0, then the configuration information should include at least information related to , such as the indication information of , which may be an explicit indication (for example, the value of included in the configuration information) or an implicit indication. For example, may be indicated by a minimum code distance, or is obtained according to the first index look-up table.

[0231] With any of the above-mentioned various alternative data modulation schemes as provided by the embodiment of the present disclosure, the complex-valued modulated symbols do not greatly change the magnitude 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.

[0232] It will be appreciated that any of the above-mentioned various data modulation schemes as provided by the embodiment of the present disclosure may also be implemented independently. Based on this, the embodiment of the present disclosure also provides a method performed by a second node in a wireless communication system, the method being a data modulation method, the method may include the steps of:

[0233] determining a data modulation scheme and a first angle related to the data modulation; optionally, the data modulation scheme is a first modulation scheme, a second modulation scheme, a third modulation scheme, a fourth modulation scheme, a fifth modulation scheme, a sixth modulation scheme or a seventh modulation scheme;

[0234] modulating a block of bits to be modulated based on the determined data modulation scheme and the first angle to obtain a block of complex-valued modulated symbols.

[0235] The description of any one of the above modulation schemes can be referred to the corresponding description hereinbefore, and the description thereof will not be repeated.

[0236] The second node may be any node in the wireless communication system, may be a UE, or may be a base station or other network node. The second node may or may not be the same as the first node. Note that the UE in the embodiment of the present disclosure may include, but is not limited to, terminal devices such as a so-called mobile phone and a computer, and may also be a terminal device in the Internet of Things, namely, an Internet of Things device.

[0237] To better illustrate aspects of the present disclosure, a more detailed description of the aspects is provided below in connection with various specific embodiments. Some embodiments provided by the present disclosure are described below using a first node as an executive subject.

[0238] It should be noted that in actual practice, some of the steps in the following embodiments may be omitted or replaced by other ways to achieve the same purpose. In the following description of the embodiments, some steps which are the same as the steps for generating a physical signal existing in an existing communication protocol may also be omitted. For example, in the process of generating a baseband signal, before modulating a block of bits, scrambling processing may be performed on the block of bits, and before performing resource mapping on a complex-valued modulated symbol, precoding processing may be performed on the block of complex-valued modulated symbols, and these would have been obvious to a person skilled in the art and may be conceivable. In addition, although the first sequence (perceptual sequence) for generating a signal is not limited in the embodiment of the present disclosure. For convenience of description, the first sequence will be exemplified by a Chirp sequence in some embodiments below. Signals generated by using a scheme provided by the embodiment of the present disclosure may be referred to as integrated signals.

[0239] As an alternative embodiment, Fig. 6 shows a flow diagram of a method performed by a first node according to the present disclosure. As shown in Fig. 6, the method may include the steps of:

[0240] Step S61: acquiring configuration information relating to signal generation, where the configuration information may optionally be referred to as configuration information of the integrated signal;

[0241] Step S62: transmitting the signal on a physical resource allocated for the signal according to the configuration information.

[0242] Optionally, the configuration information of the integrated signal may include at least first configuration information relating to a sensing function and / or second configuration information relating to a communication function.

[0243] Optionally, the first configuration information may include at least information related to the generation of the perceptual sequence, i.e. the first configuration information may be used for the first node to generate the perceptual sequence. The second configuration information includes at least configuration information related to the data modulation scheme, i.e. the second configuration information can be used for a modulation scheme used when the first node determines data transmission.

[0244] Optionally, the second configuration information may include at least one of parameters or an indication of at least one of parameters:

[0245] ① a data modulation scheme;

[0246] ② at least one of a minimum code distance and a maximum constellation point phase difference ;

[0247] ③ a constellation point central argument ;

[0248] ④ stepped phase rotation indication information;

[0249] ⑤ a modulation order;

[0250] ⑥ a configuration index capable of uniquely determining a specific value of at least one of the above-mentioned parameters ① to ⑤, namely, the first index in the preceding text.

[0251] Optionally, with regard to any one data modulation scheme provided by an embodiment of the present disclosure, a determined corresponding relationship can exist between the above-mentioned minimum code distance (defined as the minimum distance between all possible complex-valued modulated symbols) and the maximum constellation point phase difference , and therefore the maximum constellation point phase difference can be configured directly in the second configuration information, or can be calculated according to the determined corresponding relationship between and under a condition where is configured.

[0252] Optionally, the stepped phase rotation indication information is 1-bit indication information indicating whether stepped phase rotation is performed when data is modulated. For example, an indication value of 1 indicates that phase rotation is performed, and an indication value of 0 indicates that no phase rotation is performed, or vice versa. Of course, whether to perform stepped phase rotation can also be agreed in advance. For example, some or all data modulation schemes are default to perform the phase rotation, or default to not perform the phase rotation, or some specified / specific modulation schemes are agreed to perform the phase rotation, and some specified / specific modulation schemes are not performed, or some specific physical channel modulation schemes are performed to perform phase conversion, and some physical signal modulation schemes are not performed to perform the phase rotation. Here, the physical channel can be any physical channel, which can include but is not limited to an uplink physical shared channel, a downlink physical shared channel, a broadcast channel, etc.

[0253] Optionally, the modulation order is related to a data modulation scheme, and each specific modulation scheme may have a modulation order uniquely corresponding thereto, and then the first node determines the modulation order when determining the modulation scheme. Of course, a data modulation scheme may also correspond to at least two modulation orders, and the first node may determine which modulation order to use according to a configuration information indication or according to a convention.

[0254] Optionally, the average power of the complex-valued modulated symbols (also called constellation points) generated by a data bit (namely, a bit in a block of bits) via any one of the data modulation schemes given in the embodiment of the present disclosure is a set value (for example, the average power of all the complex-valued modulated symbols in the block of complex-valued modulated symbols is 1), and an absolute value of a difference between the constellation point argument and the constellation point central argument does not exceed , i.e, .

[0255] Optionally, in the embodiment of the present disclosure, the constellation point argument is defined as , i.e. a four-quadrant arctangent value in which the ratio of the imaginary part to the real part of the complex-valued modulated symbol is in the range . Optionally, the data modulation scheme may be either phase modulation or magnitude modulation or magnitude phase modulation.

[0256] As one example, assuming that constellation points in a constellation obtained by data modulation are {1,j,-1,-j}, the corresponding argument of the four constellation points are 0, π / 2, -π, and (-π) / 2, respectively.

[0257] In the embodiment of the present disclosure, the first node may generate a perceptual sequence according to the acquired configuration information, use a corresponding data modulation scheme to modulate data bits required to be transmitted according to the configuration information, then perform resource mapping after fusing (e.g. multiplying) the perceptual sequence and complex-valued data symbols generated by the modulation (or firstly performing resource mapping on the perceptual sequence and then fusing with the complex-valued modulated symbols, or firstly performing resource mapping on the complex-valued modulated symbols and then fusing with the perceptual sequence), generate an integrated signal based on the mapped signal, and transmit the generated signal on a corresponding physical resource.

[0258] Embodiments of the present disclosure provide a scheme in which an integrated signal is jointly generated by a perceptual sequence and a sequence of complex-valued modulated symbols derived from data bits through a data modulation scheme provided by the embodiments of the present disclosure. The perceptual sequence and the sequence of complex-valued modulated symbols may be transmitted on the same physical resource (e.g. time domain), such as the same time domain resource, or within the same time domain resource and the same bandwidth. Optionally, on a resource unit (such as a resource element of a time-frequency resource) where data is actually transmitted, a complex symbol actually carried by a signal is obtained by multiplying a complex-valued modulated symbol obtained by modulating data with a corresponding element of the perceptual sequence.

[0259] Several alternative data modulation schemes provided by the present disclosure are described below in connection with some alternative embodiments. It should be noted that in an actual implementation, some limiting conditions in the following alternative embodiments (for example, when the stepped phase rotation indication information indicates that the stepped phase rotation is performed or indicates that the stepped phase rotation is not performed) may or may not be provided, because it may be agreed that a data modulation scheme satisfying a certain condition is used, and the indication may not be required.

[0260] Embodiment 1

[0261] In this embodiment, a modulation scheme of a first modulation scheme is given; the first modulation scheme is a modulation scheme with a modulation order of 1 (namely, mapping a bit into a complex-valued modulated symbol), and the modulation scheme is hereinafter referred to as Sector-BPSK.

[0262] Fig. 7 shows a schematic diagram of a constellation corresponding to Sector-BPSK, and it can be seen from the figure that there are two constellation points 710, 720 of the modulation scheme, and the two constellation points of Sector-BPSK are 710 and 720, respectively. 730 is the angle between the angle bisector of the angle between the two constellation points and the line connecting the origin of the constellation and the horizontal axis of the constellation, 740 is the maximum phase difference of the two constellation points. In the present embodiment, there are two constellation points 710, 720, and the maximum constellation point phase differences is the larger value of the absolute value of the difference between the argument / phase angle of the two constellation points and the central argument 730, namely, the difference between the constellation point argument of the first quadrant in Fig. 7 and the central argument. Optionally, the constellation points in this embodiment have an amplitude of 1.

[0263] Assuming that the bit data stream (block of bits) is has a value of 0 or 1, the modulation method of Sector-BPSK is:

[0264] ① when the stepped phase rotation indication information indicates that no stepped phase rotation is performed,

[0265] in case of Sector-BPSK modulation, bit is mapped to complex-valued modulated symbol , according to:

[0266]

[0267] or

[0268]

[0269] ② when the stepped phase rotation indication information indicates that the stepped phase rotation is performed,

[0270] in case of Sector-BPSK modulation, bit is mapped to complex-valued modulated symbol , according to:

[0271]

[0272] or

[0273]

[0274] Embodiment 2

[0275] In this embodiment, a modulation scheme of a second modulation scheme is given; the second modulation scheme is a modulation scheme with a modulation order of 1, and the modulation scheme is hereinafter referred to as Sector-2PAM.

[0276] Fig. 8 shows a diagram of a constellation corresponding to Sector-2PAM. There are two constellation points 810, 820 of the modulation scheme, and the two constellation points 810, 820 of Sector-2PAM are 810 and 820, respectively.

[0277] It should be noted that although is not explicitly included in the constellation points of Sector-2PAM in the figure, to obtain a unique solution for the coordinates of the constellation points, needs to be implicitly included in the calculation of the constellation points of Sector-2PAM.

[0278] Assuming that the bit data stream (block of bits) is has a value of 0 or 2, the modulation method of Sector-BPSK is:

[0279] ① when the stepped phase rotation indication information indicates that no stepped phase rotation is performed,

[0280] in case of Sector-2PAM modulation, bit is mapped to complex-valued modulated symbol , according to:

[0281]

[0282] or

[0283]

[0284] ② when the stepped phase rotation indication information indicates that the stepped phase rotation is performed,

[0285] in case of Sector-2PAM modulation, bit is mapped to complex-valued modulated symbol , according to:

[0286]

[0287] or

[0288]

[0289] In the above-mentioned first and second embodiments provided by the present disclosure, sector-BPSK and Sector-2PAM corresponding to the same may have the same minimum code distance. For Sector-BPSK and Sector-2PAM, the minimum code distance is both .

[0290] In practical applications, if there is only a minimum code distance and no maximum constellation point phase difference among the configuration information, satisfying the equation can be obtained according to calculation of , or according to the determined relationship of through table lookup.

[0291] Optionally, for any of the data modulation schemes proposed in the embodiment of the present disclosure, 830 may be 0 or other agreed values, and may also be determined based on the configuration information. The transmitter may determine and 830 based on one or more items of information related to the data modulation, and further may use a corresponding data modulation scheme to modulate the block of bits according to the determined data modulation schemes as well as and 830 to obtain a modulated block of complex-valued modulated symbols. Optionally, resource mapping may be performed based on the block of complex-valued modulated symbols to obtain a baseband signal.

[0292] Optionally, resource mapping may be performed based on a block of complex-valued modulated symbols and a perceptual sequence to generate a baseband signal having both a sensing function and a data transmission function. According to theory of signal processing, if there are small fluctuations in the magnitude and phase of the sensing signal, it will not significantly affect the sensing performance. Thus, these allowed magnitude phases can be used to transmit data. Since all the constellation points in the two first-order modulation schemes given in the above-mentioned Embodiment 1 and Embodiment 2 of the present disclosure are limited within a specific argument range, and the magnitude is concentrated around 1, after multiplying the complex-valued modulated symbol and the sensing signal, the complex-valued modulated symbol does not greatly change the magnitude and phase of the sensing signal, namely, the purpose of transmitting data on the sensing signal is achieved.

[0293] In addition, the stepped phase rotation can make the signal generation more random. For example, when the signal waveform is DFT-s-OFDM, the peak-to-average power ratio of the signal can be reduced, so the efficiency of the power amplifier can be improved, the signal distortion caused by hardware non-ideal characteristics can be reduced, and the generated signal can better meet the requirements.

[0294] Embodiment 3

[0295] An embodiment of the present disclosure also provides five second-order modulation schemes with a modulation order of 2 (i.e. two bits being mapped to one complex-valued modulated symbol). For convenience of description, these five modulation schemes are hereinafter referred to as second-order schemes 1 to 5, respectively, corresponding to the above-described third modulation scheme to seventh modulation scheme, respectively.

[0296] Figs. 9 to 13 respectively show diagrams of constellations of the five second-order modulation schemes, the constellation points of the second-order modulation schemes being four, the kth constellation point of the second-order scheme m being shown in the of the drawings, and identifies the second-order scheme 1. It should be noted that, in practical applications, the corresponding relationship between the constellation point sequence number and the constellation point is not limited to the alternative manner shown in figures 9 to 13, and the constellation point sequence number and the constellation point may correspond one-to-one. These five modulation schemes will be described below by taking the serial number identification shown in Figs. 9 to 13 as an example, respectively.

[0297] ①The four constellation points of the second-order modulation scheme 1 can be expressed as:

[0298]

[0299] The relationship between the minimum code distance and the maximum constellation point phase difference of the second-order modulation scheme 1 is . If there is only the minimum code distance and no the maximum constellation point phase difference among the configuration information, may be calculated according to , satisfying the equation can be obtained according to the determined relationship of through table lookup.

[0300] ②Each constellation point of the second-order modulation scheme 2 may be represented as

[0301]

[0302] wherein , .

[0303] As shown in Fig. 10, in the second-order modulation scheme 2, four constellation points form an equilateral rhombus, i.e. lengths of the four sides of the rhombus are all equal to the distance of and . Likewise, the corresponding relationship between the constellation point sequence number and the constellation point is not limited to that shown in Fig. 10 and the above formula, and the constellation point sequence number and the constellation point may correspond one-to-one.

[0304] The relationship between the minimum code distance and the maximum constellation point phase difference of the second-order modulation scheme 2 is . If there is only the minimum code distance and no the maximum constellation point phase difference among the configuration information, satisfying the equation can be obtained according to the determined relationship of through table lookup.

[0305] ③Each constellation point of the second-order modulation scheme 3 may be represented as

[0306]

[0307] wherein , .

[0308] As shown in Fig. 11, the four constellation points of the second-order modulation scheme 3 form a square. The relationship between the minimum code distance and the maximum constellation point phase difference of the scheme is . If there is only the minimum code distance and no the maximum constellation point phase difference in the configuration information, satisfying the equation can be calculated according to , or can be obtained according to the determined relationship of through table lookup.

[0309] ④Each constellation point of the second-order modulation scheme 4 may be represented as

[0310]

[0311] wherein , .

[0312] As shown in Fig. 12, the four constellation points of the second-order modulation scheme 4 constitute the largest inscribed square of the sector. The relationship between the minimum code distance and the maximum constellation point phase difference is . If there is only the minimum code distance and no the maximum constellation point phase difference among the configuration information, satisfying the equation can be obtained according to the determined relationship of through table lookup.

[0313] ⑤Each constellation point of the second-order modulation scheme 5 may be represented as

[0314]

[0315] wherein , .

[0316] As shown in Fig. 13, the relationship between the minimum code distance and the maximum constellation point phase difference of the second-order modulation scheme 5 is . If there is only the minimum code distance and no the maximum constellation point phase difference among the configuration information, satisfying the equation can be obtained according to the determined relationship of through table lookup.

[0317] With regard to the above-mentioned five second-order modulation schemes 1 to 5, assuming that the bit data stream is with a value of 0 or 1, the modulation methods of the schemes 1 to 5 can be as follows:

[0318] (1) when the stepped phase rotation indication information indicates that no stepped phase rotation is performed,

[0319] in the case of modulation of a second-order modulation scheme (the scheme number is denoted as and ), bit is mapped to a complex-valued modulated symbol , according to:

[0320]

[0321] (2) when the stepped phase rotation indication information indicates that the stepped phase rotation is performed,

[0322] In the case of modulation of a second-order modulation scheme (the scheme number is denoted as and ), bit is mapped to the complex-valued modulated symbol , according to:

[0323]

[0324] Since all the constellation points in the above-mentioned five second-order modulation schemes given by the embodiments of the present disclosure are limited within a specific argument range, and the magnitude is concentrated around 1, after multiplying the complex-valued modulated symbol with a sensing signal, the complex-valued modulated symbol does not greatly change the magnitude 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, to improve resource utilization.

[0325] Similarly, the stepped phase rotation can reduce the peak-to-average power ratio when the signal waveform is DFT-s-OFDM, which can improve the efficiency of power amplifier and reduce the signal distortion caused by hardware non-ideal characteristics.

[0326] A method of signal generation implemented in accordance with aspects provided by embodiments of the present disclosure is described below in connection with several alternative embodiments. Embodiments of the present disclosure are not limited as to the specific form of the waveform on which the signal generation is based, and the waveform may include, but is not limited to, the DFT-s-OFDM waveform or the CP-OFDM waveform in the following embodiments.

[0327] Embodiment 4

[0328] This embodiment provides a signal generation method, which may optionally be a DFT-s-OFDM waveform based signal generation method. Fig. 14 shows a diagram of signal generation principle of the method, and as shown in Fig. 14, the method can include processes such as perceptual sequence generation, data modulation, transform precoding, combination (multiplication) and resource mapping, and it needs to be noted that in actual implementation, the processing of other steps before the fusion of the generation of the perceptual sequence is not uniquely limited in order in implementation. Portions of the process are described separately below.

[0329] (1) Perceptual sequence generation 1410

[0330] The specific form of the perceptual sequence is not limited by the embodiments of the present disclosure, which are illustrated as chirp sequences. The perceptual sequence is assumed to be , where is a real number, and is the number of sub-carriers allocated for the physical signal.

[0331] (2) Modulation 1420

[0332] The modulation scheme of data may be any one of the data modulation schemes of Embodiment 1, Embodiment 2 and Embodiment 3 described above.

[0333] Optionally, for the DFT-s-OFDM waveform, regardless of the specific modulation scheme used, the data modulation scheme using stepping phase rotation can be used for data modulation. For example, the stepped phase rotation indication information preferably indicates a stepped phase rotation. Assuming that the modulated block of complex-valued modulated symbols is , where is the number of OFDM symbols allocated for the physical signal.

[0334] (3) Layer mapping, transform precoding, and precoding 1430

[0335] The method of performing layer mapping and transform precoding 1430 on a block of complex-valued modulated symbols may use a variant precoding process defined in an existing communication standard protocol.

[0336] Thereafter, the transformed pre-coded complex-valued symbol block may also be pre-coded in a manner similar to the precoding processing manner defined in the existing standard protocol. Subsequent processing may be based on transform precoding and / or precoding processed blocks of complex-valued symbols. It is assumed that the complex-valued symbol block after performing layer mapping, transform precoding, and precoding is .

[0337] (4) Multiplication 1440

[0338] The perceptual sequence and the complex-valued symbol block are multiplied as follows to obtain a complex-valued data block :

[0339]

[0340] (5) Resource mapping 1450

[0341] is resource mapped onto the time-frequency resources allocated to the physical signal, and the resource mapping method 1450 can be a resource mapping method defined in an existing standard protocol.

[0342] (6) Baseband signal generation 1460

[0343] A baseband signal is generated according to the resource mapped signal. The baseband signal may be generated in a manner defined in the existing standard protocols.

[0344] In the following, taking and as an example, an example of step 4 and step 5 is given, where means that 8 consecutive sub-carriers are allocated to the physical signal, and means that 3 consecutive OFDM symbols are allocated to the physical signal, then the signal mapping on the th resource element on the OFDM symbol in the time-frequency resource of the physical signal is as shown in the following Table 2. , and when performing resource mapping, the mapping to the resource elements should be in an increasing order of first a frequency domain resource index and then a time domain resource index, namely, firstly according to a mapping mode in the time domain, namely, in an increasing order of first the index and then the index . As shown in Table 2, for a OFDM symbol of = 0, firstly the first 8 elements in 1 are mapped onto 8 resource elements corresponding to = 0 according to the mapping mode, and then the first 8 elements of to are mapped onto 8 resource elements corresponding to = 1, and the last 8 elements are mapped onto 8 resource elements corresponding to = 2.

[0345] Table 2

[0346]

[0347] In this embodiment, after transform precoding and precoding, multiplying a complex-valued modulated symbol and a perception sequence before resource mapping, and then mapping a result after multiplication to an allocated physical resource can not only realize the sensing function but also realize data transmission on the same physical resource under the premise of minor changes to existing standards, thereby improving resource utilization.

[0348] Embodiment 5

[0349] This embodiment provides a signal generation method based on a CP-OFDM waveform, and as shown in Fig. 15, the method may include the following contents:

[0350] (1) Perceptual sequence generation 1510

[0351] The specific form of the perceptual sequence is not limited in the present embodiment, and the chirp sequence is still used as an example for explanation. The perceptual sequence is assumed to be , where is a real number, and is the number of sub-carriers within the bandwidth allocated for the physical signal.

[0352] (2) Modulation 1520

[0353] The modulation scheme of data may be any one of Embodiment 1, Embodiment 2 and Embodiment 3 provided above. Optionally, for a CP-OFDM waveform, modulation without stepped phase rotation may be used regardless of the specific modulation scheme employed, e.g. the stepped phase rotation indication information preferably indicates that no stepped phase rotation is to be performed. Assuming that the modulated block of complex-valued modulated symbols is , where is the number of OFDM symbols allocated for the physical signal, and is the number of subcarriers used to transmit data within the bandwidth allocated for the physical signal, where .

[0354] (3) Resource mapping 1530

[0355] Performing resource mapping 1530 on the block of complex-valued modulated symbols , and the method for resource mapping 1530 can be a resource mapping method defined in an existing standard protocol. Optionally, the block of complex-valued modulated symbols may be performed with layer mapping and precoding prior to resource mapping, and the complex-valued symbol blocks after precoding may be performed with resource mapping.

[0356] It is assumed that the signal on each OFDM symbol after resource mapping is , is the relative subcarrier sequence number within the bandwidth allocated for the physical signal, is the relative sequence number of the OFDM symbol allocated for the physical signal, and is the first OFDM symbol allocated for the physical signal.

[0357] (4) Multiplying with the perceptual sequence point by point 1540

[0358] By traversal , on each OFDM symbol allocated for a physical signal, multiply the perceptual sequence and the signal on each OFDM symbol after resource mapping point by point according to the following method:

[0359]

[0360] (5) Baseband signal generation 1550

[0361] By generating a baseband signal based on , the baseband signal can be generated in a manner defined in existing standard protocols.

[0362] Unlike the embodiment in which complex-valued modulated symbols are multiplied by a perceptual sequence after resource mapping, it is also possible to implement both the sensing function and the data transmission function under the premise of minor changes to existing standards.

[0363] Embodiment 6

[0364] This embodiment provides a baseband signal generation method 1650 based on a CP-OFDM waveform. As shown in Fig. 16, this embodiment differs from embodiment 5 in that in embodiment 5, a block of complex-valued modulated symbols is firstly subjected to resource mapping and then multiplied by a perceptual sequence, and this embodiment can firstly multiply the block of complex-valued modulated symbols by the perceptual sequence element by element, see step (4) 1440 in embodiment 4, and then the multiplied complex-valued data block is subjected to resource mapping, see step (5) 1450 in the embodiment.

[0365] Embodiment 7 (Joint resource mapping method)

[0366] This embodiment provides another CP-OFDM waveform-based signal generation method, as shown in Fig. 17, which may include the following:

[0367] (1) Perceptual sequence generation 1710

[0368] The specific form of the perceptual sequence is also not limited in the present embodiment, and the chirp sequence is still used as an example for explanation. The perceptual sequence is assumed to be , where is a real number, and is the number of sub-carriers within the bandwidth allocated for the physical signal.

[0369] (2) Modulation 1720

[0370] The modulation scheme of data can be any one of the above embodiments 1, 2 and 3. Optionally, for a CP-OFDM waveform, regardless of the specific modulation scheme, the stepped phase rotation indication information preferably indicates that no stepped phase rotation is performed, but stepped phase rotation can also be performed.

[0371] Assuming that the modulated block of complex-valued modulated symbols is , where is the number of OFDM symbols allocated for the physical signal, and is the number of subcarriers used to transmit data within the bandwidth allocated for the physical signal.

[0372] (3) Perceptual sequence resource mapping 1730

[0373] The first node should assume that the perceptual sequence satisfies the power allocation and maps to a resource element within a resource block allocated for transmission, the mapping method being:

[0374]

[0375] where is the relative subcarrier sequence number within the bandwidth allocated for the physical signal, is the relative sequence number of the OFDM symbol allocated for the physical signal, is the first OFDM symbol allocated for the physical signal, and is a constant determined by the power allocation.

[0376] (4) Joint resource mapping 1740

[0377] The first node should assume that a block of complex-valued modulated symbols is mapped onto a resource element within a resource block allocated for transmission. Specifically, if a complex-valued modulated symbol needs to be mapped on the resource element (the mapping of the first sequence has been performed) (assuming that the sequence number of the mapped complex-valued modulated symbol is ), the mapping method of data on this resource element is . If no complex-valued modulated symbols need to be mapped on the resource element , .

[0378] The mapping of the block of complex-valued modulated symbols to the resource element should be in an increasing order of first and then .

[0379] (5) Baseband signal generation 1750

[0380] By generating a baseband signal based on , the baseband signal can be generated in a manner defined in existing standard protocols.

[0381] Embodiment 8

[0382] This embodiment provides another signal generation method for transmitting data over a perceptual sequence in the time domain, and a flow chart may refer to Fig. 16, and the method may include the following contents:

[0383] (1) Perceptual sequence generation 1610

[0384] The specific form of the perceptual sequence is also not limited in the present embodiment, and the chirp sequence is still used as an example for explanation. The perceptual sequence is assumed to be , where is a real number, and is the number of samples of the perceptual sequence in the time domain, and is equal to the length of the sequence, i.e. the number of elements in the sequence.

[0385] (2) Modulation 1620

[0386] The modulation scheme of data may be any one of the above-mentioned embodiments 1, 2 and 3. Optionally, regardless of the specific modulation scheme used, the stepped phase rotation indication information preferably indicates that no stepped phase rotation is performed, but a stepped phase rotation may also be performed.

[0387] It is assumed that the modulated block of complex-valued modulated symbols is , where is the number of samples corresponding to a symbol for carrying a single complex-valued modulated symbol, means that each time-domain sample independently maps one complex-valued modulated symbol, means that every two time-domain samples independently map one complex-valued modulated symbol, and the other values are the same. The acquisition / determination method of is not limited, and optionally, the first node may acquire the value of P through signaling, and may also include indication information about P in the acquired configuration information, and may also use the value agreed with the receiving end.

[0388] (3) Multiplication 1630 of a perceptual sequence with a block of complex-valued modulated symbols

[0389] The multiplication method is: , ,

[0390] where represents rounding down.

[0391] (4) Resource mapping 1640

[0392] The resource mapping method 1640 is:

[0393] , ,

[0394] where is the mapped time domain sample sequence number known to the first node, and is a constant determined by the power allocation.

[0395] (5) Baseband signal generation 1650

[0396] Performing analogue-to-digital conversion (ADC) on the resource mapped sequence to generate a baseband signal.

[0397] Embodiment 9

[0398] This embodiment provides a method performed by a third node, which is a signal reception method. The third node is a receiver. Optionally, the first node may be a UE and the third node may be a base station, or the first node may be a base station and the third node may be a UE.

[0399] Regardless of which of Embodiment 4 to Embodiment 8 the specific signal generation method is, the receiver can always obtain the received complex data block in a manner opposite to the signal generation method, and a general mathematical model of the received complex data block can be expressed as the following expression:

[0400]

[0401] where is the nth element of the block of complex-valued modulated symbols actually transmitted by the first node, i.e. the transmitting end (the element with sequence number n, which can actually be the (n + 1)th element), is the corresponding element of the perceptual sequence multiplied by , and may be different for a specific generation method (various optional methods as given in embodiments 4-8 above), is the channel value experienced by (a channel parameter of the data transmission channel), and is an item containing various interference and noise.

[0402] Assuming that the third node has obtained the estimated value of the channel value through a pilot, and the operation of the third node when performing channel equalization is:

[0403]

[0404] Embodiments of the present disclosure are not limited to equalization algorithms, particularly if zero-forcing equalization is employed, .

[0405] Then, the third node calculates the distance between and each possible constellation point, determines the closest constellation point as the constellation point actually transmitted by the transmitting end, and can thus obtain the corresponding bit value of this constellation point, to complete the demodulation of the signal.

[0406] It should be noted that the alternatives provided in the various embodiments of the present disclosure described above may be implemented separately, or the steps of each embodiment or each embodiment may be implemented in combination, without conflicting the implementation steps of the different embodiments.

[0407] Embodiments of the present disclosure also provide a node that may include a transceiver and at least one processor coupled to the transceiver that may perform the aspects provided by any of the alternative embodiments of the present disclosure, based on the same principles as methods provided by embodiments of the present disclosure. The node may be any electronic device, such as an electronic user equipment or a network node.

[0408] Optionally, the node may be a first node and the at least one processor may be configured to perform any of the methods performed by the first node provided by embodiments of the present disclosure.

[0409] Optionally, the node may be a second node and the at least one processor may be configured to perform any of the methods performed by the second node provided by embodiments of the present disclosure.

[0410] Also provided in embodiments of the present disclosure is an electronic device including at least one transceiver, and at least one processor coupled to the at least one transceiver, wherein the at least one processor is configured to perform the methods provided in any of the alternative embodiments of the present disclosure.

[0411] FIG. 18 shows a schematic structure diagram of an electronic device to which the embodiment of the present disclosure is applied. As shown in FIG. 18, the electronic device 1800 shown in FIG. 18 include a processor 1810 and a memory 1830. Wherein, the processor 1810 is connected to the memory 1830, for example, through a bus 1820. Optionally, the electronic device 1800 may further include a transceiver 1840, and the transceiver 1840 may be used for data exchange between the electronic device and other electronic device, for example, the transmission and / or reception of data etc. It should be noted that, in practical applications, the transceiver 1840 is not limited to one, and the structure of the electronic device 1800 does not constitute any limitations to the embodiments of the present disclosure. Optionally, the electronic device may be a node in a wireless communication system, such as a first node, and the node in the network may be a user equipment or a base station or other network node.

[0412] The processor 1810 may be a central processing unit (CPU), a general-purpose processor, a digital signal processor (DSP), an application specific integrated circuit (ASIC), or a field programmable gate array (FPGA), or other programmable logic devices, transistor logic devices, hardware components, or any combination thereof. It may implement or execute various exemplary logical blocks, modules and circuits described in connection with the present disclosure. The processor 1810 may also be a combination for realizing computing functions, for example, a combination of one or more microprocessors, a combination of a DSP and a microprocessor etc.

[0413] The bus 1820 may include a path to transfer information between the components described above. The bus 1820 may be a peripheral component interconnect (PCI) bus, or an extended industry standard architecture (EISA) bus, etc. The bus 1820 may be an address bus, a data bus, a control bus, etc. For ease of presentation, the bus is represented by only one thick line in FIG. 18. However, it does not mean that there is only one bus or one type of buses.

[0414] The memory 1830 may be, but not limited to, read only memories (ROMs) or other types of static storage devices that can store static information and instructions, random access memories (RAMs) or other types of dynamic storage devices that can store information and instructions, may be electrically erasable programmable read only memories (EEPROMs), compact disc read only memories (CD-ROMs) or other optical disk storages, optical disc storages (including compact discs, laser discs, discs, digital versatile discs, blue-ray discs, etc.), magnetic storage media or other magnetic storage devices, or any other media that can carry or store computer program and that can be read by computers.

[0415] The memory 1830 is used to store computer program for executing the embodiments of the present disclosure, and is controlled by the processor 1810. The processor 4001 is used to execute the computer program stored in the memory 1830 to implement the solution provided in any method embodiment described above.

[0416] Embodiments of the present disclosure provide a computer-readable storage medium having a computer program stored on the computer-readable storage medium, the computer program, when executed by a processor implements the steps and corresponding contents of the foregoing method embodiments.

[0417] Embodiments of the present disclosure also provide a computer program product including a computer program, the computer program when executed by a processor realizing the steps and corresponding contents of the preceding method embodiments.

[0418] The terms "first", "second", "third", "fourth", "1", "2", etc. (if present) in the specification and claims of this application and the accompanying drawings above are used to distinguish similar objects and need not be used to describe a particular order or sequence. It should be understood that the data so used is interchangeable where appropriate so that embodiments of the present disclosure described herein can be implemented in an order other than that illustrated or described in the text.

[0419] It should be understood that while the flow diagrams of embodiments of the present disclosure indicate the individual operational steps by arrows, the order in which these steps are performed is not limited to the order indicated by the arrows. Unless explicitly stated herein, in some implementation scenarios of embodiments of the present disclosure, the implementation steps in the respective flowcharts may be performed in other orders as desired. In addition, some, or all of the steps in each flowchart may include multiple sub-steps or multiple phases based on the actual implementation scenario. Some or all of these sub-steps or stages can be executed at the same moment, and each of these sub-steps or stages can also be executed at different moments separately. The order of execution of these sub-steps or stages can be flexibly configured according to requirements in different scenarios of execution time, and the embodiments of the present disclosure are not limited thereto.

[0420] The above-mentioned description is merely an alternative embodiment for some implementation scenarios of the present disclosure, and it should be noted that it would have been within the scope of protection of embodiments of the present disclosure for those skilled in the art to adopt other similar implementation means based on the technical idea of the present disclosure without departing from the technical concept of the solution of the present disclosure.

Claims

1.A method performed by a first node in a communication system, comprising:acquiring configuration information, the configuration information including information related to a data modulation scheme;determining a first angle related to data modulation based on the configuration information; andgenerating a baseband signal based on the first angle.2.The method of claim 1, wherein the generating the baseband signal based on the first angle comprises:modulating a block of bits to be modulated based on the configuration information and the first angle, to obtain a block of complex-valued modulated symbols; andperforming resource mapping based on the block of complex-valued modulated symbols and a first sequence, to generate the baseband signal, the first sequence being a sequence related to a sensing function.3.The method of claim 2, wherein the performing resource mapping based on the block of complex-valued modulated symbols and the first sequence includes at least one of:multiplying the block of complex-valued modulated symbols by the first sequence, performing a resource mapping on a result of multiplication of the block of complex-valued modulated symbols by the first sequence, and generating the baseband signal based on the resource mapping on the result of multiplication of the block of complex-valued modulated symbols by the first sequence;performing a resource mapping on the block of complex-valued modulated symbols, multiplying a result of the resource mapping on the block of complex-valued modulated symbols by the first sequence, and generating the baseband signal based on a multiplication of the result of the resource mapping on the block of complex-valued modulated symbols by the first sequence; andperforming a resource mapping on the first sequence, mapping the complex-valued modulated symbols onto resources to which the first sequence has been mapped, and generating the baseband signal based on a result after the mapping the complex-valued modulated symbols onto resources to which the first sequence has been mapped.4.The method of claim 2, before the performing resource mapping based on the block of complex-valued modulated symbols and the first sequence, further comprising:performing at least one of layer mapping, transform precoding, or precoding on the block of complex-valued modulated symbols.5.The method of claim 3, wherein in performing resource mapping on the first sequence, the mapping to resource elements is in increasing order of first a frequency domain resource index and then in increasing order of a time domain resource index.6.The method of claim 2, wherein the configuration information includes at least one of:first information indicating the data modulation scheme;second information, related to a minimum code distance between constellation points;third information, related to a constellation point central argument;fourth information, related to a maximum constellation point phase difference, the maximum constellation point phase difference being an upper limit of an absolute value of a difference between a constellation point argument and the constellation point central argument;information on whether to perform phase rotation;fifth information, related to a modulation order; anda first index being used for determining at least one of the data modulation scheme, the constellation point central argument, the maximum constellation point phase difference, whether to perform the phase rotation, or the modulation order,wherein the first angle includes the maximum constellation point phase difference, or comprises the maximum constellation point phase difference and the constellation point central argument.7.The method of claim 1, wherein the information related to a data modulation scheme satisfies at least one of:an absolute value of a difference between an argument of any constellation point and the constellation point central argument being not greater than the maximum constellation point phase difference;there being a corresponding relationship between the minimum code distance between constellation points and the maximum constellation point phase difference;an average power of the constellation point being a first value;an argument of the constellation point being less than or equal to a second value; anda magnitude of the constellation point being less than or equal to a third value.8.The method of claim 6, wherein the first angle includes the maximum constellation point phase difference and the constellation point central argument , andwherein the modulating a block of bits to be modulated based on the configuration information and the first angle, to obtain a block of complex-valued modulated symbols includes:in case of modulation of a first modulation scheme, bitis mapped to a complex-valued modulated symbol, according to:orororin case of modulation of a second modulation scheme, bitis mapped to the complex-valued modulated symbol, according to:ororor;in case of modulation of a third modulation scheme, a fourth modulation scheme, a fifth modulation scheme, a sixth modulation scheme, or a seventh modulation scheme, bitis mapped to the complex-valued modulated symbol, according to:orwhereinis a modulation scheme identification, andidentifies the third modulation scheme, the fourth modulation scheme, the fifth modulation scheme, the sixth modulation scheme, and the seventh modulation scheme, respectively;for the third modulation scheme,;for the fourth modulation scheme,wherein,;for the fifth modulation scheme,wherein,;for the sixth modulation scheme,wherein,;for the seventh modulation scheme,wherein,.9.A method performed by a second node in a wireless communication system, comprising:determining a data modulation scheme and a first angle related to data modulation; andmodulating a block of bits to be modulated based on the data modulation scheme and the first angle, to obtain a block of complex-valued modulated symbols.10.The method of claim 9, wherein the data modulation scheme is at least one of a first modulation scheme, a second modulation scheme, a third modulation scheme, a fourth modulation scheme, a fifth modulation scheme, a sixth modulation scheme, or a seventh modulation scheme,wherein the first angle includes a second angleand a third angle, andwherein:in case of modulation of the first modulation scheme, bitis mapped to a complex-valued modulated symbol, according to:orororin case of modulation of the second modulation scheme, bitis mapped to the complex-valued modulated symbol, according to:orororin case of modulation of the third modulation scheme, the fourth modulation scheme, the fifth modulation scheme, the sixth modulation scheme, or the seventh modulation scheme, bitbeing mapped to the complex-valued modulated symbol, according to:orwhereinis a modulation scheme identification, andidentifies the third modulation scheme, the fourth modulation scheme, the fifth modulation scheme, the sixth modulation scheme, and the seventh modulation scheme, respectively;for the third modulation scheme,;for the fourth modulation scheme,wherein,;for the fifth modulation scheme,wherein,;for the sixth modulation scheme,wherein,;for the seventh modulation scheme,wherein,.11.A first node in a wireless communication system, comprising:a transceiver; andat least one processor coupled to the transceiver and configured to:acquire configuration information, the configuration information including information related to a data modulation scheme,determine a first angle related to data modulation based on the configuration information, andgenerate a baseband signal based on the first angle.12.The first node of claim 11,wherein, to generate the baseband signal based on the first angle, the at least one processor is further configured to:modulate a block of bits to be modulated based on the configuration information and the first angle, to obtain a block of complex-valued modulated symbols, andperform resource mapping based on the block of complex-valued modulated symbols and a first sequence, to generate the baseband signal, the first sequence being a sequence related to a sensing function,wherein, to perform the resource mapping based on the block of complex-valued modulated symbols and the first sequence, the at least one processor is further configured to at least one of:multiply the block of complex-valued modulated symbols by the first sequence, perform a resource mapping on a result of multiplication of the block of complex-valued modulated symbols by the first sequence, and generate the baseband signal based on the resource mapping on the result of multiplication of the block of complex-valued modulated symbols by the first sequence,perform a resource mapping on the block of complex-valued modulated symbols, multiply a result of the resource mapping on the block of complex-valued modulated symbols by the first sequence, and generate the baseband signal based on a multiplication of the result of the resource mapping on the block of complex-valued modulated symbols by the first sequence, andperform a resource mapping on the first sequence, map the complex-valued modulated symbols onto resources to which the first sequence has been mapped, and generating the baseband signal based on a result after the mapping the complex-valued modulated symbols onto resources to which the first sequence has been mapped,wherein, before performing resource mapping based on the block of complex-valued modulated symbols and the first sequence, the at least one processor is further configured to:perform at least one of layer mapping, transform precoding, or precoding on the block of complex-valued modulated symbols, andwherein in performing resource mapping on the first sequence, the mapping to resource elements is in increasing order of first a frequency domain resource index and then in increasing order of a time domain resource index.13.The fist node of claim 12,wherein the configuration information includes at least one of:first information indicating the data modulation scheme;second information, related to a minimum code distance between constellation points;third information, related to a constellation point central argument;fourth information, related to a maximum constellation point phase difference, the maximum constellation point phase difference being an upper limit of an absolute value of a difference between a constellation point argument and the constellation point central argument;information on whether to perform phase rotation;fifth information, related to a modulation order; anda first index being used for determining at least one of the data modulation scheme, the constellation point central argument, the maximum constellation point phase difference, whether to perform the phase rotation, or the modulation order,wherein the first angle includes the maximum constellation point phase difference, or comprises the maximum constellation point phase difference and the constellation point central argument,wherein the information related to a data modulation scheme satisfies at least one of:an absolute value of a difference between an argument of any constellation point and the constellation point central argument being not greater than the maximum constellation point phase difference;there being a corresponding relationship between the minimum code distance between constellation points and the maximum constellation point phase difference;an average power of the constellation point being a first value;an argument of the constellation point being less than or equal to a second value; anda magnitude of the constellation point being less than or equal to a third value,wherein the first angle includes the maximum constellation point phase differenceand the constellation point central argument, andwherein, to modulate a block of bits to be modulated based on the configuration information and the first angle to obtain a block of complex-valued modulated symbols,in the case of modulation of a first modulation scheme, bitis mapped to a complex-valued modulated symbol, according to:in case of modulation of a first modulation scheme, bitis mapped to a complex-valued modulated symbol, according to:orororin case of modulation of a second modulation scheme, bitis mapped to the complex-valued modulated symbol, according to:ororor;in case of modulation of a third modulation scheme, a fourth modulation scheme, a fifth modulation scheme, a sixth modulation scheme, or a seventh modulation scheme, bitis mapped to the complex-valued modulated symbol, according to:orwhereinis a modulation scheme identification, andidentifies the third modulation scheme, the fourth modulation scheme, the fifth modulation scheme, the sixth modulation scheme, and the seventh modulation scheme, respectively;for the third modulation scheme,;for the fourth modulation scheme,wherein,;for the fifth modulation scheme,wherein,;for the sixth modulation scheme,wherein,;for the seventh modulation scheme,wherein,.14.A second node in a wireless communication system, comprising:a transceiver; andat least one processor coupled to the transceiver and configured to:determine a data modulation scheme and a first angle related to data modulation, andmodulate a block of bits to be modulated based on the data modulation scheme and the first angle, to obtain a block of complex-valued modulated symbols.15.The second node of claim 14, wherein the data modulation scheme is a first modulation scheme, a second modulation scheme, a third modulation scheme, a fourth modulation scheme, a fifth modulation scheme, a sixth modulation scheme, or a seventh modulation scheme,wherein the first angle comprises a second angleand a third angle, andwherein:in case of modulation of the first modulation scheme, bitis mapped to a complex-valued modulated symbol, according to:orororin case of modulation of the second modulation scheme, bitis mapped to the complex-valued modulated symbol, according to:ororor;in case of modulation of the third modulation scheme, the fourth modulation scheme, the fifth modulation scheme, the sixth modulation scheme, or the seventh modulation scheme, bitbeing mapped to the complex-valued modulated symbol, according to:orwhereinis a modulation scheme identification, andidentifies the third modulation scheme, the fourth modulation scheme, the fifth modulation scheme, the sixth modulation scheme, and the seventh modulation scheme, respectively;for the third modulation scheme,;for the fourth modulation scheme,wherein,;for the fifth modulation scheme,wherein,;for the sixth modulation scheme,wherein,;for the seventh modulation scheme,wherein,.

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