Communication node, execution method thereof and storage medium

Abstract

The invention relates to a communication node, an execution method thereof and a storage medium. The present disclosure relates to a 5G communication system or a 6G communication system for supporting higher data rates beyond 4G communication systems such as Long Term Evolution (LTE). The invention provides a method executed by a communication node in a communication system. The method comprises the following steps: acquiring configuration information of a physical signal; generating a sequence corresponding to the physical signal according to a time length related parameter of the physical signal obtained based on the configuration information; and transmitting and / or receiving a time domain signal generated based on the sequence.

Description

Technical Field

[0001] The present disclosure relates to the field of communications, and in particular to a communication node, a method executed by the communication node, and a computer-readable storage medium. Background Art

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

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

[0004] In order to achieve such high data rates and ultra-low latency, the implementation of 6G communication systems in terahertz (e.g., 95GHz to 3THz bands) has been considered. It is expected that since the path loss and atmospheric absorption in the terahertz band are more serious than those in the millimeter wave (mmWave) band introduced in 5G, the technology that can ensure the signal transmission distance (i.e., coverage) will become more critical. As the main technology to ensure coverage, it is necessary to develop radio frequency (RF) elements, antennas, new waveforms with better coverage than orthogonal frequency division multiplexing (OFDM), beamforming and massive multiple input multiple output (MIMO), full dimensional multiple input multiple output (FD-MIMO), array antennas, and multi-antenna transmission technologies such as massive antennas. In addition, new technologies have been discussed to improve signal coverage in the terahertz band, such as metamaterial-based lenses and antennas, orbital angular momentum (OAM), and reconfigurable intelligence surface (RIS).

[0005] In addition, in order to improve spectrum efficiency and overall network performance, the following technologies have been developed for 6G communication systems: full-duplex technology for enabling uplink and downlink transmissions to use the same frequency resources simultaneously; network technology that utilizes satellites, high-altitude platform stations (HAPS), etc. in an integrated manner; improved network structure to support mobile base stations, etc., and to enable network operation optimization and automation, etc.; dynamic spectrum sharing technology with conflict avoidance based on spectrum usage prediction: using artificial intelligence (AI) in wireless communications to improve overall network operations by utilizing AI from the design stage of developing 6G and internalizing end-to-end AI support functions; and next-generation distributed computing technology that overcomes the computing power limitations of user equipment (UE) through ultra-high performance communication and computing resources achievable on the network (such as mobile edge computing (MEC), cloud, etc.). In addition, attempts are continuing to strengthen connectivity between devices, optimize networks, promote software-based network entities, and increase openness of wireless communications by designing new protocols to be used in 6G communication systems, developing mechanisms for implementing hardware-based security environments and secure use of data, and developing technologies for maintaining privacy.

[0006] It is expected that the research and development of 6G communication systems including hyper-connectivity of person to machine (P2M) and machine to machine (M2M) will bring the next hyper-connectivity experience. In particular, it is expected that services such as truly immersive extended reality (XR), high-fidelity mobile holograms, and digital replicas will be provided through 6G communication systems. In addition, services such as remote surgery, industrial automation, and emergency response for enhanced safety and reliability will be provided through 6G communication systems, making the technology applicable to various fields such as industry, healthcare, automobiles, and home appliances. Summary of the invention

[0007] According to a first aspect of an embodiment of the present disclosure, a method performed by a communication node in a communication system is provided, the method comprising: acquiring configuration information of a physical signal; generating a sequence corresponding to the physical signal according to time length related parameters of the physical signal obtained based on the configuration information; and sending and / or receiving a time domain signal generated based on the sequence.

[0008] Optionally, generating a sequence corresponding to the physical signal according to the time length related parameters of the physical signal obtained based on the configuration information includes: generating a sequence corresponding to the physical signal according to the time length related parameters and time offset related parameters of the physical signal obtained based on the configuration information.

[0009] Optionally, the configuration information includes at least one of the following items: first configuration information related to the time length of the physical signal, second configuration information related to the time offset of the physical signal, and third configuration information related to time-frequency resources allocated to the physical signal.

[0010] Optionally, generating the time domain signal based on the sequence includes: performing resource mapping on the sequence, mapping the sequence to the time-frequency resources allocated to the physical signal based on the configuration information to generate the physical signal; performing inverse Fourier transform and adding cyclic prefix processing on the physical signal to generate an OFDM baseband signal corresponding to the physical signal as the time domain signal.

[0011] Optionally, the configuration information also includes: fourth configuration information related to windowing processing of the sequence or the physical signal, used to configure whether to perform or not perform windowing processing on the sequence or the physical signal in the process of generating the sequence or generating the physical signal; and / or, fifth configuration information related to the type of the sequence, used to configure whether to generate the sequence corresponding to the physical signal based on the ZC sequence.

[0012] Optionally, the physical signal has the same signal amplitude on the resource elements included in the time-frequency resources allocated to the physical signal, or the physical signal has different signal amplitudes on at least two resource elements among the resource elements included in the time-frequency resources allocated to the physical signal.

[0013] Optionally, the phase of each element in the sequence is a quadratic function of the index value of the element.

[0014] Optionally, the first configuration information includes at least one of the following items: a ratio of the time length of the physical signal to the length of an OFDM waveform; the time length of the physical signal; the number of samples corresponding to the time length of the physical signal; and / or

[0015] The second configuration information includes at least one of the following items: a ratio of the time offset of the physical signal to the length of an OFDM waveform; a time offset of the physical signal within an OFDM symbol; a number of samples corresponding to the time offset of the physical signal within an OFDM symbol; and / or

[0016] The third configuration information includes at least one of time domain resource information and frequency domain resource information of the physical signal.

[0017] Optionally, the fourth configuration information includes at least one of the following items: first information for indicating whether to perform windowing processing on the sequence or the physical signal, a window sequence, second information for indicating a type of the window sequence, and a parameter related to the window sequence; and / or

[0018] The fifth configuration information includes at least one of the following items: a group number into which the sequence is grouped, a sequence number within each group of the sequence, and third information indicating whether to generate a sequence corresponding to the physical signal based on a ZC sequence.

[0019] Optionally, if the configuration information does not include fourth configuration information, or the configuration information includes fourth configuration information but the fourth configuration information does not include the first information, the windowing processing of the sequence or the physical signal is not performed; or

[0020] If the configuration information includes fourth configuration information and the fourth configuration information includes at least one of a window sequence, the second information and a parameter related to the window sequence, a windowing process of the sequence or the physical signal is performed; or

[0021] If the configuration information does not include the fifth configuration information, or the configuration information includes the fifth configuration information but the fifth configuration information does not include the third information or does not include the group sequence number and the sequence sequence number, the sequence corresponding to the physical signal is not generated based on the ZC sequence; or

[0022] If the configuration information includes fifth configuration information and the fifth configuration information includes the group number and the sequence number, the sequence corresponding to the physical signal is generated based on a ZC sequence.

[0023] Optionally, the time length related parameter includes a first value or a first parameter value obtained based on the first value, wherein the first value is a ratio of the time length of the physical signal to a length of an OFDM waveform, and the first value is a positive number not greater than 1; and / or

[0024] The time offset related parameter includes a second value or a second parameter value obtained based on the second value, wherein the second value is the ratio of the time offset of the physical signal to the length of an OFDM waveform, and the second value is a non-negative real number not exceeding 1 and the result obtained by subtracting the second value from the first value.

[0025] Optionally, when the type of the sequence is a ZC sequence, the first parameter value is a prime number obtained based on a third value and the first value, wherein the third value is a value that is mutually prime with a maximum prime number that is not more than the length of the sequence; and / or, the second parameter value is a value obtained based on the first value, the second value and the maximum prime number.

[0026] According to a second aspect of an embodiment of the present disclosure, a communication node is provided, the communication node comprising: a transceiver; and a processor coupled to the transceiver and configured to execute the above method.

[0027] According to a third aspect of an embodiment of the present disclosure, a computer-readable storage medium storing instructions is provided. When the instructions are executed by at least one processor, the at least one processor is prompted to execute the above method.

[0028] According to the technical solution provided by the embodiments of the present disclosure, a sequence is generated according to the time length related parameters of the physical signal obtained based on the configuration information and a time domain signal generated based on the sequence is sent and / or received. Since the time domain signal is generated based on the sequence, there is no aliasing in the time domain and the peak-to-average power ratio (PAPR) is greatly reduced, so it has better time domain perception capability. Therefore, when the sent and / or received time domain signal is used for communication perception integration, it can be beneficial to better realize communication perception integration.

[0029] It is to be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] The accompanying drawings herein are incorporated in and constitute a part of the specification, illustrate exemplary embodiments consistent with the present disclosure, and together with the description, are used to explain the principles of the present disclosure, and do not constitute improper limitations on the present disclosure.

[0031] Figure 1 An example wireless network 100 is shown in accordance with an embodiment of the present disclosure.

[0032] Figure 2 An example base station according to an embodiment of the present disclosure is shown.

[0033] Figure 3 An example user device according to an embodiment of the present disclosure is shown.

[0034] Figure 4 is a flow chart illustrating a method performed by a communication node according to an embodiment of the present disclosure;

[0035] Figure 5 is a schematic diagram showing time domain characteristics of a physical signal according to an embodiment of the present disclosure;

[0036] Figure 6 is a block diagram illustrating a communication node according to an embodiment of the present disclosure. DETAILED DESCRIPTION

[0037] Before carrying out the following specific embodiments, it may be advantageous to set forth the definitions of certain words and phrases used throughout the patent document. The term "connection" and its derivatives refer to any direct or indirect communication between two or more elements, regardless of whether those elements are in physical contact with each other. The terms "send", "receive" and "communicate" and their derivatives include both direct and indirect communication. The terms "include" and "include" and their derivatives mean unrestricted inclusion. The term "or" is compatible, meaning and / or. The phrase "associated with" and its derivatives mean including, included, interconnected with it, including, included, connected to or connected with it, coupled to or coupled with it, can communicate with it, collaborate with it, interweave, juxtapose, approach, be bound to or bound with it, have, have the property of, have to ... or have a relationship with ... etc. The term "controller" means any device, system or part thereof that controls at least one operation. Such a controller can be implemented in a hardware manner or in a combination of hardware and software and / or firmware. The functionality associated with any particular controller, whether local or remote, may be centralized or distributed. 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 required. For example, "at least one of A, B, and C" includes any of the following combinations: A, B, C, A and B, A and C, B and C, and only A, only B, only C. Likewise, the term "set" means one or more. Thus, a set of items may be a single item or a set of two or more items.

[0038] Moreover, various functions as described below can be implemented or supported by one or more computer programs, each of which is formed by a computer-readable program code and embodied in a computer-readable medium. The terms "application" and "program" refer to one or more computer programs, software components, instruction sets, processes, functions, objects, categories, instances, related data, or a portion thereof suitable 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 that can be accessed by a computer, such as a read-only memory (ROM), a random access memory (RAM), a hard drive, a compact disc (CD), a digital video disc (DVD), or any other type of memory. "Non-transitory" computer-readable media excludes wired, wireless, optical, or other communication links that convey instantaneous electrical signals or other signals. Non-transitory computer-readable media include media in which data can be permanently stored and media in which data can be stored and rewritten later, such as rewritable optical discs or erasable memory devices.

[0039] Definitions for certain other words and phrases are provided throughout this patent document. Those of 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.

[0040] The figures and various embodiments used to describe the principles of the present disclosure are included herein for illustration only and should not be construed in any way as limiting the scope of the present disclosure. In addition, those skilled in the art will appreciate that the principles of the present disclosure can be implemented in any appropriately arranged wireless communication system.

[0041] The following Figures 1 to 3 Various embodiments of the present disclosure are described as being implemented in a wireless communication system. Figures 1 to 3 The description is 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.

[0042] Figure 1 An example wireless network according to an embodiment of the present disclosure is shown. Figure 1 The embodiment of the wireless network shown in FIG. 1 is for illustration only. Other embodiments of the wireless network 100 may be used without departing from the scope of the present disclosure.

[0043] like Figure 1As shown, the wireless network includes a base station (next generation nodeB, gNB or gNodeB) 101, gNB 102, and gNB 103. gNB 101 communicates with gNB 102 and gNB 103. gNB 101 also communicates with at least one network 130 such as the Internet, a proprietary Internet Protocol (IP) network, or other data network.

[0044] The gNB 102 provides wireless broadband access to a network 130 for a plurality of first user equipments (UEs) within a coverage area 120 of the gNB 102. The plurality of first UEs include a UE 111 that may be located at a small business (SB); a UE 112 that may be located at an enterprise (E); a UE 113 that may be located at a WiFi hot spot (HS); a UE 114 that may be located at a first residence (R1); a UE 115 that may be located at a second residence (R2); and a UE 116 that may be a mobile device (M) such as a cellular phone, a wireless laptop, a wireless personal digital assistant (PDA), etc. The gNB 103 provides wireless broadband access to the network 130 for a plurality of second UEs within a coverage area 125 of the gNB 103. The plurality of second UEs include UE 115 and UE 116 and subscriber stations (SS, e.g., UEs) 117, 118, and 119. In some embodiments, one or more of gNBs 101-103 may communicate with each other and UEs 111-116 using existing wireless communication technologies, and one or more of UEs 111-119 may communicate directly with each other (e.g., UEs 117-119) using other existing or proposed wireless communication technologies.

[0045] Depending on the network type, the term "base station" or "BS" may refer to any component (or collection of components) configured to provide wireless access to a network, such as a transmit point (TP), a transmit-receive point (TRP), an enhanced (or "evolved") base station (eNodeB or eNB), a 5G base station (gNB), a macro cell, a femto cell, a wireless fidelity (WiFi) access point (AP), or other wireless-capable device. A base station may provide wireless access according to one or more wireless communication protocols, such as 3GPP 5G new radio (NR), Long Term Evolution (LTE), LTE-Advanced (LTE-A), high speed packet access (HSPA), Wi-Fi 802.11a / b / g / n / ac, etc. For convenience, various names of base station type devices and functions are used interchangeably in this patent document to refer to network infrastructure components that provide wireless access to remote terminals. Also, depending on the network type, the term "user equipment" (UE) may refer to any component such as a mobile station (MS), a subscriber station (SS), a remote terminal, a wireless terminal, a reception point, or a user device, etc. For convenience, various names of user equipment type devices and functions are used interchangeably in this patent document to refer to a remote wireless device that wirelessly accesses a BS regardless of whether the UE is a mobile device (such as a mobile phone or a smart phone) or a remote wireless device that is generally considered to be a fixed device (such as a desktop computer or a vending machine).

[0046] Dashed lines illustrate the approximate extents of coverage areas 120 and 125, which are shown as generally circular for purposes of illustration and explanation only. It should be clearly understood that coverage areas associated with a gNB, such as coverage areas 120 and 125, may have other shapes, including irregular shapes, depending on the configuration of the gNB and variations in the wireless environment associated with natural and artificial obstacles.

[0047] As described in more detail below, one or more of UEs 111-119 include circuitry, programming, or a combination thereof. In certain embodiments, one or more of gNBs 101-103 include circuitry, programming, or a combination thereof.

[0048] although Figure 1 An example of a wireless network is shown, but Figure 1Various changes may be made. For example, wireless network 100 may include any number of gNBs and any number of UEs in any suitable arrangement. Moreover, gNB 101 may communicate directly with any number of UEs and provide those UEs with wireless broadband access to network 130. Similarly, each gNB 102-103 may communicate directly with network 130 and provide UEs with direct wireless broadband access to network 130. In addition, gNBs 101, 102, and / or 103 may provide access to other or additional external networks such as an external telephone network or other types of data networks.

[0049] Figure 2 An example base station according to an embodiment of the present disclosure is shown. Figure 2 The embodiment of the gNB 102 shown in FIG. is for illustration only, and Figure 1 gNBs 101 and 103 may have the same or similar configurations. However, gNBs appear in a variety of configurations, and Figure 2 The scope of the present disclosure is not limited to any particular implementation of the gNB.

[0050] like Figure 2 As shown in FIG. 1 , 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. gNB 102 also includes a controller / processor 205, a memory 206, and a backhaul or network interface 207.

[0051] The RF transceivers 201a-201n receive incoming RF signals from the antennas 200a-200n, such as signals sent 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 circuit 204, which generates processed baseband signals by filtering, decoding and / or digitizing the baseband or IF signals. The RX processing circuit 204 sends the processed baseband signals to the controller / processor 205 for further processing.

[0052] TX processing circuit 203 receives analog or digital data (such as voice data, web data, email, or interactive video game data) from controller / processor 205. TX processing circuit 203 encodes, multiplexes, and / or digitizes the outgoing baseband data to generate processed baseband or IF signals. RF transceivers 201a-201n receive the outgoing processed baseband or IF signals from TX processing circuit 203 and up-convert the baseband or IF signals to RF signals that are transmitted via antennas 201a-201n.

[0053] Controller / processor 205 may include one or more processors or other processing devices that control the overall operation of gNB 102. For example, controller / processor 205 may control the reception of forward channel signals and the transmission of reverse channel signals by RF transceivers 201a-201n, RX processing circuitry 204, and TX processing circuitry 203 in accordance with well-known principles. Controller / processor 205 may also support additional functionality, such as more advanced wireless communication functionality.

[0054] For example, the controller / processor 205 may support beamforming 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 variety of other functions may be supported in the gNB 102 by the controller / processor 205.

[0055] Controller / processor 205 is also capable of executing programs and other processes, such as an operating system (OS), located in memory 206. Controller / processor 205 may move data into or out of memory 206 as required by the executing processes.

[0056] The controller / processor 205 is also connected to a backhaul or network interface 207. The backhaul or network interface 207 allows the gNB 102 to communicate with other devices or systems via a backhaul connection or via a network. The interface 207 may support communication over any appropriate (one or more) wired or wireless connections. For example, when the gNB 102 is implemented as part of a cellular communication system (such as a cellular communication system supporting 5G, LTE, or LTE-A), the interface 207 may allow the gNB 102 to communicate with other gNBs via a wired or wireless backhaul connection. When the gNB 102 is implemented as an access point, the interface 207 may allow the gNB 102 to communicate 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 appropriate structure that supports communication over a wired or wireless connection such as an Ethernet or RF transceiver.

[0057] Memory 206 is connected to controller / processor 205. A portion of memory 206 may include random access memory (RAM), and another portion of memory 206 may include flash memory or other read-only memory (ROM).

[0058] although Figure 2 An example of gNB 102 is shown, but the Figure 2 For example, gNB 102 may include any number of Figure 2 As a specific example, the access point may include multiple interfaces 207, and the controller / processor 205 may support routing functions to route data between different network addresses. As another specific example, although shown as including a single instance of TX processing circuitry 203 and a single instance of RX processing circuitry 204, the gNB 102 may include multiple instances of each (such as one for each RF transceiver). For example, Figure 2 The various components in may be combined, further subdivided, or omitted, and additional components may be added according to specific needs.

[0059] Figure 3 An example user device according to an embodiment of the present disclosure is shown. Figure 3 The embodiment of UE 116 shown in FIG. 1 is for illustration only, and Figure 1 UEs 111-115 and 117-119 may have the same or similar configurations. However, UEs may appear in a variety of configurations, and Figure 3 The scope of the present disclosure is not limited to any particular implementation of the UE.

[0060] like Figure 3 As shown in FIG. 1 , UE 116 includes an antenna 301, a radio frequency (RF) transceiver 302, a TX processing circuit 303, a microphone 304, and a receive (RX) processing circuit 305. UE 116 also includes a speaker 306, a controller or processor 307, an input / output (I / O) interface (IF) 308, an input device 309, a touch screen display 310, and a memory 311. The memory 311 includes an OS 312 and one or more applications 313.

[0061] RF transceiver 302 receives incoming RF signals transmitted by a gNB of network 100 from antenna 301. RF transceiver 302 downconverts the incoming RF signals to generate an IF or baseband signal. The IF or baseband signal is sent to RX processing circuitry 305, which generates a processed baseband signal by filtering, decoding, and / or digitizing the baseband or IF signal. RX processing circuitry 305 sends the processed baseband signal to speaker 306 (such as for voice data) or processor 307 for further processing (such as for web browsing data).

[0062] The TX processing circuit 303 receives analog or digital voice data from the microphone 304 or other outgoing baseband data (such as web data, email, or interactive video game data) from the processor 307. The TX processing circuit 303 encodes, multiplexes, and / or digitizes the outgoing baseband data to generate a processed baseband or IF signal. The RF transceiver 302 receives the outgoing processed baseband or IF signal from the TX processing circuit 303 and up-converts the baseband or IF signal to an RF signal that is transmitted via the antenna 301.

[0063] The processor 307 may include one or more processors or other processing devices and executes the OS 312 stored in the memory 311 to control the overall operation of the UE 116. For example, the processor 307 may control the reception of forward channel signals and the transmission of reverse channel signals by the RF transceiver 302, the RX processing circuit 305, and the TX processing circuit 303 according to well-known principles. In some embodiments, the processor 307 includes at least one microprocessor or microcontroller.

[0064] The processor 307 is also capable of executing other processes and programs located in the memory 311, such as a process for CSI reporting on the uplink channel. The processor 307 can move data into or out of the memory 311 as needed to execute the process. In some embodiments, the processor 307 is configured to execute the application 313 based on the OS 312 or in response to a signal received from the gNB or operator. The processor 307 is also coupled to the I / O interface 308, which provides the UE 116 with the ability to connect to other devices such as laptops and portable computers. The I / O interface 308 is the communication path between these accessories and the processor 307.

[0065] Processor 307 is also connected to touch screen display 310. A user of UE 116 may use touch screen display 310 to enter data into UE 116. Touch screen 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 a website.

[0066] The memory 311 is connected to the processor 307. A portion of the memory 311 may include RAM, and another portion of the memory 311 may include flash memory or other ROM.

[0067] although Figure 3 An example of UE 116 is shown, but the Figure 3 Make various changes. For example, Figure 3 The various components in the embodiment may be combined, further subdivided, or omitted, and additional components may be added as required. As a specific example, processor 307 may be divided into multiple processors, such as one or more central processing units (CPUs) and one or more graphics processing units (GPUs). Furthermore, although Figure 3 The UE 116 is shown configured as a mobile phone or smart phone, but the UE may be configured to operate as other types of mobile or stationary devices.

[0068] How to improve the spectrum utilization of communication systems has always been a hot topic for practitioners. In recent years, as the working frequency bands of communication systems have been moving more and more towards high frequencies, communication systems will inevitably conflict with high-frequency radar systems. However, both in terms of background theoretical knowledge and hardware structure, communication systems and radar systems have very high similarities. Therefore, in theory, the two seemingly independent systems can be integrated to achieve functional enhancement of the communication system and improvement of spectrum efficiency, achieving a mutually beneficial and win-win effect. Therefore, communication perception integration is a hot research direction in the field of communication and is also one of the candidate technologies for 6G. The core purpose of the communication perception integration system is to use the same set of hardware equipment to achieve the perception function of the surrounding environment at the cost of as little resource overhead as possible while ensuring basic communication functions. The perceived content includes the distance, direction, speed and even type of objects in the surrounding environment. Unlike the technology for locating access terminals in traditional communication systems, the communication perception integration technology can also realize the perception of various information of non-access objects, which greatly increases the ability of the communication system to dynamically adjust the working state (scheduling, beam management, early warning of access terminals, etc.) according to the surrounding environment.

[0069] The communication and perception integration technology has special requirements for reference signals. First of all, in most application scenarios of communication and perception integration, the nodes of communication and perception integration are required to have perception capabilities far beyond the communication coverage range, which requires that the reference signals used by the communication and perception integration nodes have the ability to perceive in the time domain.

[0070] However, whether it is LTE or NR, the perception ability of the standardized reference signal is limited by the length of the cyclic prefix, and the time domain signal after the inverse Fourier transform is aliased and the peak to average power ratio (PAPR) is very high, so it does not have good time domain perception ability.

[0071] In view of this, the present disclosure proposes a concept that is conducive to better realizing communication perception integration. In the concept, a sequence corresponding to the physical signal is generated according to the time length related parameters of the physical signal obtained based on the configuration information, and the physical signal generated based on the sequence is sent and / or received. Since the sequence corresponding to the physical signal is generated according to the time length related parameters of the physical signal, the time domain signal generated based on the sequence that is sent and / or received is no longer aliased in the time domain and the peak-to-average power ratio (PAPR) is greatly reduced, thereby having better time domain perception capability. Therefore, when the time domain signal is used for communication perception integration, it will be conducive to better realizing communication perception integration. Refer to the following Figures 4 to 6 Some embodiments according to the concept of the present disclosure are described in detail.

[0072] Figure 4 is a flowchart illustrating a method performed by a communication node in a communication system according to an embodiment of the present disclosure.

[0073] Reference Figure 4 In step S410, configuration information of a physical signal is obtained. According to an embodiment, the physical signal may be a single-port physical signal or a multi-port physical signal. In the following, the physical signal is taken as an example to Figure 4 Describe the various steps in .

[0074] According to an embodiment, the configuration information may include at least one of the following items: first configuration information related to the time length of the physical signal, second configuration information related to the time offset of the physical signal, and third configuration information related to the time-frequency resources allocated to the physical signal. Optionally, the configuration information may also include: at least one of fourth configuration information related to windowing processing of the sequence or the physical signal, and fifth configuration information related to the type of the sequence, but not limited thereto. According to an embodiment, the fourth configuration information is used to configure whether to perform or not to perform windowing processing on the sequence or the physical signal in the process of generating the sequence or generating the physical signal, and / or the fifth configuration information is used to configure whether to generate the sequence corresponding to the physical signal based on the ZC sequence.

[0075] According to an embodiment, at least one of the first to fifth configuration information may be dynamically acquired by acquiring control signaling, or may be acquired by acquiring static configuration, or may be acquired by acquiring semi-static configuration. The present disclosure does not limit the method of acquiring configuration information.

[0076] As an example, the first configuration information may include at least one of the following items: a ratio μ of the time length of the physical signal to the length of an orthogonal frequency division multiplexing (OFDM) waveform; a time length T of the physical signal, for example, in seconds; a number of samples N corresponding to the time length of the physical signal T For example, the ratio μ may be a positive number not greater than 1. In addition, the ratio μ may be directly given in the first configuration information, or may be indirectly calculated by using parameters in the first configuration information. For example, if the first configuration information does not include the ratio μ, μ=T·Δf or μ=N T / N FFT The ratio μ is calculated by FFT is the number of inverse Fourier transform points when performing OFDM modulation (it can also be the number of Fourier transform points, the two are equal), Δf is the subcarrier spacing. In addition, the time length T or the number of samples N T It may also be directly given in the first configuration information, or may be indirectly calculated through parameters in the first configuration information.

[0077] As an example, the second configuration information may include at least one of the following items: a ratio γ of the time offset of the physical signal to the length of an OFDM waveform; a time offset d of the physical signal within the OFDM symbol, for example, the unit may be seconds; a number of samples N corresponding to the time offset d of the physical signal within the OFDM symbol dThe ratio γ may be a non-negative real number not exceeding 1-μ. Further, the ratio γ may be directly given in the second configuration information, or may be indirectly calculated by parameters in the second configuration information. For example, if the second configuration information does not include the ratio γ, then γ=d·Δf or γ=N d / N FFT The ratio γ is calculated by FFT is the number of inverse Fourier transform points when performing OFDM modulation (it can also be the number of Fourier transform points, the two are equal), Δf is the subcarrier spacing. In addition, the offset d or the number of samples N d It may also be directly given in the first configuration information, or may be indirectly calculated through parameters in the first configuration information.

[0078] As an example, the third configuration information may include at least one of time domain resource information and frequency domain resource information of the physical signal. For example, the time domain resource information may include at least the sequence number of the OFDM symbol allocated to the physical signal in the time slot. The frequency domain resource information may include at least the number of resource blocks N allocated for the physical signal. RB In addition, if the third configuration information does not include frequency domain resource information, the communication node may allocate all resource blocks within the system bandwidth to the physical signal by default.

[0079] As an example, the fourth configuration information may include at least one of the following items: first information for indicating whether to perform windowing processing on the sequence or the physical signal, a window sequence, second information for indicating the type of the window sequence, and parameters related to the window sequence. In the following, for the convenience of description, the first information for indicating whether to perform windowing processing on the sequence or the physical signal may be referred to as "windowing indication information", the second information for indicating the type of the window sequence may be referred to as "window sequence type indication information", and the parameters related to the window sequence may be referred to as "window sequence related parameters".

[0080] According to an embodiment, whether to perform windowing processing on the sequence or the physical signal can be implicitly configured. For example, if the configuration information does not include the fourth configuration information, the windowing processing of the sequence or the physical signal is not performed; if the configuration information includes the fourth configuration information but the fourth configuration information does not include the windowing indication information, the windowing processing of the sequence or the physical signal is not performed; if the configuration information includes the fourth configuration information and the fourth configuration information includes at least one of a window sequence, second information for indicating the type of the window sequence, and a parameter related to the window sequence, the windowing processing of the sequence or the physical signal is performed.

[0081] Optionally, it can also be indicated whether to perform windowing processing on the sequence or the physical signal. For example, if the configuration information includes the fourth configuration information and the fourth configuration information includes windowing indication information, but the windowing indication information indicates that the sequence or the physical signal is not to be windowed, the communication node does not perform windowing processing on the sequence or the physical signal; if the fourth configuration information includes windowing indication information and the windowing indication information indicates that the sequence or the physical signal is to be windowed, the communication node performs windowing processing on the sequence or the physical signal. In addition, optionally, the window sequence used for windowing can be given directly in the fourth configuration information. If the fourth configuration information does not include a window sequence, the window sequence used for windowing can also be indirectly generated by the window sequence type indication information and / or window sequence related parameters in the fourth configuration information. Further, the length of the window sequence used for windowing is the same as the length of the sequence, wherein the window sequence is power normalized, that is, the sum of the squares of the elements of the window sequence is equal to 1.

[0082] As an example, the fifth configuration information may include at least one of the following items: a group number u into which the sequence is grouped, a sequence number v in each group of the sequence, and third information for indicating whether a sequence corresponding to a physical signal is generated based on a Zadoff-Chu (ZC) sequence (hereinafter, for convenience of description, referred to as "sequence type indication information"). For example, the group number u∈{0, 1, ..., 29}, and the sequence number v∈{0, 1} in the group.

[0083] According to an embodiment, it is possible to implicitly configure whether to generate a sequence corresponding to the physical signal based on a ZC sequence. For example, if the configuration information does not include the fifth configuration information, or the configuration information includes the fifth configuration information but the fifth configuration information does not include the sequence type indication information or does not include the group number and the sequence number, the sequence corresponding to the physical signal is not generated based on the ZC sequence. For another example, if the configuration information includes the fifth configuration information and the fifth configuration information includes the group number and the sequence number, the sequence corresponding to the physical signal is generated based on the ZC sequence. Optionally, it is also possible to explicitly configure whether to generate a sequence corresponding to the physical signal based on a ZC sequence. For example, it is explicitly indicated whether to generate a sequence corresponding to the physical signal based on a ZC sequence through the sequence type indication information included in the fifth configuration information.

[0084] According to an embodiment, the characteristics of the physical signal in the time domain may be as follows: Figure 5 As shown, where Ts is the time interval between sample points. Figure 5 As shown, the time offset d of the physical signal can be equal to d=γ / Δf=N d T s, time length (also called "time domain length") T = μ / Δf = N T T s , an OFDM waveform length = 1 / Δf = N FFT T s , the time length of the physical signal is less than the length of an OFDM waveform. In this article, the time length of the physical signal usually refers to the time length of the energy-concentrated part of the physical signal after the inverse Fourier transform.

[0085] In step S420, a sequence corresponding to the physical signal is generated according to the time length related parameters of the physical signal obtained based on the configuration information. According to an embodiment, the time length related parameters of the physical signal obtained based on the configuration information may include at least one of the following two situations: the configuration information directly includes the time length related parameters, in which case the time length related parameters can be directly obtained from the configuration information; or the time length related parameters are determined based on the parameters included in the configuration information.

[0086] As described above, for example, the configuration information may include first configuration information related to the time length of the physical signal. In this case, in step S420, a sequence corresponding to the physical signal may be generated according to the time length related parameters obtained based on the first configuration information. For example, the time length related parameters are obtained based on the first configuration information, which may include a case where the time length related parameters are determined using only the first configuration information, or a case where the time length related parameters are determined based on the first configuration information in combination with other configuration information (e.g., the fifth configuration information).

[0087] Optionally, step S420 may include generating a sequence corresponding to the physical signal according to a time length related parameter and a time offset related parameter of the physical signal obtained based on the configuration information. For example, as described above, the configuration information may include second configuration information related to the time offset of the physical signal in addition to the first configuration information related to the time length of the physical signal. In this case, a sequence corresponding to the physical signal may be generated according to the time length related parameter obtained based on the first configuration information and the time offset related parameter obtained based on the second configuration information.

[0088] For example, the time offset related parameters are determined based on the second configuration information, including both the case where the time offset related parameters are determined using only the second configuration information, and the case where the time offset related parameters are determined based on the second configuration signal combined with other configuration information (for example, the first configuration information).

[0089] As described above, the configuration information may further include fifth configuration information related to the type of the sequence. For example, in the case where it is determined based on the fifth configuration information that the sequence is generated based on the ZC sequence, a sequence corresponding to the physical signal may be generated based on the ZC sequence according to the time length related parameters. Optionally, in the case where it is determined based on the fifth configuration information that the sequence is generated based on the ZC sequence, a sequence corresponding to the physical signal may be generated based on the ZC sequence according to the time length related parameters and the time offset related parameters. For example, the fifth configuration information may include sequence type indication information, and the sequence type indication information may indicate whether a sequence corresponding to the physical signal is generated based on the ZC sequence. For example, in the case where the configuration information includes the fifth configuration information and the fifth configuration information includes sequence type indication information, the communication node may generate a sequence corresponding to the physical signal based on the ZC sequence according to the time length related parameters and the time offset related parameters. Conversely, in the case where the configuration information does not include the fifth configuration information, or although the fifth configuration information is included but the fifth configuration information does not include sequence type indication information, the communication node may default not to generate a sequence corresponding to the physical signal based on the ZC sequence.

[0090] According to an embodiment, the time length related parameter may include a first value or a first parameter value obtained based on the first value, wherein the first value is the ratio of the time length of the physical signal to the length of an OFDM waveform (for example, μ mentioned in this article), and the first value is a positive number not greater than 1; the time offset related parameter may include a second value or a second parameter value obtained based on the second value, wherein the second value is the ratio of the time offset of the physical signal to the length of an OFDM waveform (for example, γ mentioned in this article), and the second value is a non-negative real number and does not exceed 1 and is the result of subtracting the first value.

[0091] According to an embodiment, when the type of the sequence is a ZC sequence, the first parameter value is a prime number obtained based on a third value and the first value, wherein the third value is a value that is coprime to a maximum prime number not greater than a length of the sequence; and / or the second parameter value is a value obtained based on the first value, the second value and the maximum prime number.

[0092] For example, the first parameter value may be a prime number closest to the ratio of the third value to the first value, wherein the third value is a value coprime to the maximum prime number not greater than the length of the sequence; the second parameter value may be an odd number closest to the value obtained by multiplying the maximum prime number by the second value and the fourth value by the first value, wherein the fourth value is a preset positive number. For example, the first parameter value may be L mentioned in the following embodiments q The third value may be q mentioned in the following embodiment, and the maximum prime number may be N mentioned in the following embodiment.ZC , the second parameter value may be D mentioned in the following embodiment, and the fourth value may be 2, but is not limited thereto.

[0093] In addition, according to an embodiment, optionally, the phase of each element in the sequence may be a quadratic function of the index value of the element. By making the phase of each element in the sequence a quadratic function of the index value of the element, the time domain signal generated based on the sequence can be closer to a linear frequency modulation signal and have more stable performance in terms of time domain perception.

[0094] Finally, in step S430, a time domain signal generated based on the sequence may be transmitted and / or received.

[0095] Since a sequence corresponding to the physical signal is generated according to the time length related parameters of the physical signal, the time domain signal generated based on the sequence and sent and / or received is no longer aliased in the time domain and the peak-to-average power ratio (PAPR) is greatly reduced, so it has better time domain perception capability. Therefore, when the time domain signal is used for communication perception integration, it will be able to better realize communication perception integration.

[0096] In addition, as mentioned above, optionally, a sequence corresponding to the physical signal can be generated based on the time length related parameters and time offset related parameters of the physical signal obtained based on the configuration information. In this case, the time domain signal generated based on the sequence and sent and / or received in step S430 is not only no longer aliased in the time domain and the peak-to-average power ratio (PAPR) is greatly reduced, but also has a configurable offset, so that the offset of the time domain signal can be dynamically adjusted according to the perceived distance range requirements, so that the time domain signal has better perception capability. Therefore, when the time domain signal is used for communication perception integration, the effect of communication perception integration will be able to be further improved.

[0097] According to an embodiment, the time domain signal sent and / or received in step S430 can be used to perform perception and / or channel estimation. For example, the received time domain signal can be correlated with the local signal in the time domain to perform perception. For another example, the time domain signal can be sent and perception can be performed based on the echo signal of the sent time domain signal, or the time domain signal sent by the communication node can be received by another communication node, and the other communication node can perform auxiliary perception based on the time domain signal. The present disclosure does not limit how to perform perception using the sent and / or received time domain signal in the future. Optionally, the method may also include: performing channel estimation based on the sent and / or received time domain signal. For example, after receiving the time domain signal, a Fourier transform can be performed on the time domain signal and the transformed signal can be de-resource mapped to obtain a received sequence, and channel estimation can be performed based on the received sequence and a sequence corresponding to the physical signal.

[0098] According to an embodiment, step S430 may include: generating the time domain signal based on the sequence; sending and / or receiving the time domain signal on the time-frequency resources configured based on the configuration information. For example, sending and / or receiving the time domain signal on the time-frequency resources configured based on the third configuration information. The time domain signal can be used as a reference signal in communication perception integration.

[0099] If the reference signal generation method for communication-awareness integration technology is easier, for example, the reference signal can be generated in the same way as the communication signal. For example, if CP-OFDM is still the mainstream waveform for future communications, the reference signal can be generated in OFDM mode, which can effectively save resource costs (for example, there is no need to make major changes to the transmitter in the existing communication system).

[0100] To this end, according to an embodiment of the present disclosure, for example, generating the time domain signal based on the sequence may include: performing resource mapping on the sequence, mapping the sequence to the time-frequency resources allocated to the physical signal based on the third configuration information to generate the physical signal; performing inverse Fourier transform and adding cyclic prefix processing on the physical signal to generate an OFDM baseband signal corresponding to the physical signal as the time domain signal. The time domain signal can be used as a reference signal in communication perception integration. Subsequently, after generating the time domain signal, for example, the time domain signal can be sent and / or received on the time-frequency resources configured based on the third configuration information. Since the time domain signal is not generated directly in the time domain, but is generated in an OFDM manner, the generation method is simpler and can effectively save resource costs.

[0101] According to an embodiment, as mentioned above, the configuration information may include fourth configuration information related to the windowing process of the sequence or the physical signal, which is used to configure whether to perform or not perform the windowing process of the sequence or the physical signal in the process of generating the sequence or generating the physical signal. Therefore, based on the fourth configuration information, the windowing process of the sequence or the physical signal may be performed or not performed in the process of generating the sequence or generating the physical signal. According to an embodiment, the windowing process may be to multiply the window sequence by the sequence. Whether the sequence is windowed in the process of generating the sequence or the physical signal is windowed in the process of generating the physical signal, the physical signal will have different signal amplitudes on at least two of the resource particles included in the time-frequency resources allocated to the physical signal. If the windowing process is not performed, the physical signal has the same signal amplitude on the resource particles included in the time-frequency resources allocated to the physical signal. Whether to window is configurable. For example, the windowing indication information in the fourth configuration signal may be used to indicate whether to window. That is, the physical signal may have the same signal amplitude on the resource elements included in the time-frequency resources allocated for the physical signal, or the physical signal may have different signal amplitudes on at least two resource elements in the resource elements included in the time-frequency resources allocated for the physical signal. By windowing the sequence in the process of generating the sequence or windowing the physical signal in the process of generating the physical signal, the Gibbs effect of the time domain signal caused by the inverse Fourier transform can be reduced, thereby further reducing the PAPR of the time domain signal, for example, allowing the time domain signal to be transmitted at a higher power, thereby improving the perceived distance range.

[0102] In the above, the method performed by the communication node according to the embodiment of the present disclosure has been described. For the convenience of understanding, especially the understanding of steps S420 and S430, the following describes multiple embodiments of generating a sequence corresponding to a physical signal involved in step S420 and generating a time domain signal based on the sequence in S430 mentioned above.

[0103] Below, the first embodiment is first described. This embodiment takes the physical signal being a single-port physical signal as an example. According to the first embodiment, the configuration information may include first to fifth configuration information. The fourth configuration information includes windowing indication information, window sequence type indication information, and window sequence related parameter ρ. The fifth configuration information includes group sequence number u, sequence number v within the group, and sequence type indication information. Further, the sequence type indication information may indicate that a sequence corresponding to the physical signal is generated based on a ZC sequence, and the group sequence number u and the sequence number v within the group may be any value within a range of values. In this case, the method of generating a sequence corresponding to the physical signal in step 420 may be as follows:

[0104] The sequence x[n] corresponding to the physical signal can be grouped, where, for example, u∈{0, 1, ..., 29} is the group number and v∈{0, 1} is the sequence number within the group, so that each group contains at most two sequences. The definition of the sequence x[0], ..., x[M-1] depends on the sequence length M. is the sequence length, which is also the number of resource particles within the bandwidth allocated by the physical signal, N RB is the number of resource blocks allocated for the physical signal, Is the number of resource particles in a resource block.

[0105] As an example, the sequence x[0], ..., x[M-1] can be given by:

[0106] x[n]=x q [n mod N ZC ]

[0107]

[0108]

[0109]

[0110] As another example, the sequence x[0], ..., x[M-1] can also be given by:

[0111] x[n]=x q [n mod N ZC ]

[0112]

[0113]

[0114]

[0115] Where N ZC is such that N ZC The largest prime number <M, Lq is the prime number closest to q / μ, and D is the prime number closest to 2γN ZC / μ is the nearest odd number. As an example, if the time offset γ is not configured in the configuration information, the network node defaults to D=1.

[0116] Next, in step S430, a time domain signal may be generated based on the above sequence.

[0117] First, the above sequence may be resource mapped to the time-frequency resources allocated for the physical signal to generate the physical signal. For example, the network node may assume that the above sequence is scaled by a factor β that satisfies the transmit power and then perform resource mapping in the following manner:

[0118] If the window indication information in the fourth configuration information indicates that no windowing is performed, then the physical signal a k，l =β·x[n];

[0119] If the window indication information in the fourth configuration information indicates windowing, then the physical signal a k，l =β·w[n]x[n];

[0120] in:

[0121] (1) k = n, It is the OFDM symbol number assigned to the physical signal.

[0122] (2) The window type indication information of the fourth configuration information may indicate that a Kaiser window is used when adding windows, and then a window sequence w[n] may be obtained based on the Kaiser window:

[0123]

[0124] Among them I 0 [·] is the Bessel function of the first kind, and σ is a real number used to normalize the power of the window sequence.

[0125] It should be noted that, when the window type indication information in the fourth configuration information in this embodiment indicates the window function used in windowing, it is not limited to the Kaiser window, and other window functions may be used in windowing. For example, the window type indication information in the fourth configuration information may also indicate that a Gaussian window is used in windowing, and then the window sequence w[n] may be obtained based on the Gaussian window:

[0126]

[0127] Here, σ is a real number used to normalize the power of the window sequence.

[0128] After the physical signal is generated, the physical signal may then be subjected to inverse Fourier transform and cyclic prefix addition processing to generate a corresponding OFDM baseband signal as the time domain signal mentioned above.

[0129] In the first embodiment described above, compared with the ZC sequence in the LTE or NR standards, a parameter D related to the offset of the physical signal is introduced when generating a sequence corresponding to the physical signal, so that the time domain baseband signal obtained after the inverse Fourier transform of the physical signal has a configurable offset, and the position of the time domain baseband signal in the OFDM symbol where it is located can be dynamically adjusted according to the perceived distance range requirements. In addition, a parameter L related to the time length of the physical signal is introduced when generating the sequence. q , so that the duration of the time domain baseband signal obtained after the physical signal is inverse Fourier transformed is shorter than the length of an OFDM symbol, so that the signal is no longer aliased in the time domain and the peak-to-average power ratio (PAPR) is greatly reduced, thereby ensuring that the signal can be used for time domain perception. In addition, the windowing operation when performing resource mapping to generate the physical signal can reduce the Gibbs effect of the time domain baseband signal caused by the inverse Fourier transform, thereby further reducing the PAPR of the time domain baseband signal, so that the time domain baseband signal can be sent at a higher power, thereby improving the perceived distance range. In addition, when generating a sequence corresponding to the physical signal, the phase of each element in the sequence is a quadratic function of the index value of the element, thereby making the time domain signal generated based on the sequence closer to a linear frequency modulation signal and having more stable performance in time domain perception.

[0130] The second embodiment is described below. This embodiment takes the physical signal being a single-port physical signal as an example. According to the second embodiment, the configuration information includes first to fifth configuration information. The fourth configuration information includes windowing indication information, window sequence type indication information, and window sequence parameter ρ. The fifth configuration information includes a group sequence number u, a sequence number v within a group, and a sequence type indication information. Further, the sequence type indication information may indicate that a sequence corresponding to the physical signal is generated based on a ZC sequence, and the group sequence number u and the sequence number v within a group may be any value within a value range.

[0131] In this case, the method of generating the sequence corresponding to the physical signal in step 420 may be as follows:

[0132] The sequence x[n] corresponding to the physical signal can be grouped, where, for example, u∈{0, 1, ..., 29} is the group number and v∈{0, 1} is the sequence number within the group, so that each group contains at most two sequences. The definition of the sequence x[0], ..., x[M-1] depends on the sequence length M. is the sequence length, which is also the number of resource particles within the bandwidth allocated by the physical signal, NRB is the number of resource blocks allocated for the physical signal, Is the number of resource particles in a resource block.

[0133] If the window indication information in the fourth configuration information indicates that no windowing is performed, the sequence x[0], ..., x[M-1] is x[n]=x q [n mod N zc ] given;

[0134] If the window indication information in the fourth configuration information indicates windowing, the sequence x[0], ..., x[M-1] is x[n]=w[n]x q [n mod N zc ] given.

[0135] in,

[0136] (1)N zc is such that N zC The largest prime number <M, L q is the prime number closest to q / μ, and D is the prime number closest to 2γN ZC / μNearest odd integer.

[0137] (2) The window type indication information of the fourth configuration information in the configuration information may indicate that a Kaiser window is used when adding windows, and then a window sequence w[n] may be obtained based on the Kaiser window:

[0138]

[0139] Among them I 0 [·] is the Bessel function of the first kind, and v is a real number used to normalize the power of the window sequence.

[0140] It should be noted that, when the window type indication information in the fourth configuration information in this embodiment indicates the window function used in windowing, it is not limited to the Kaiser window, and other window functions may be used in windowing. For example, the window type indication information in the fourth configuration information may also indicate that a Gaussian window is used in windowing, and then a window sequence w[n] may be generated based on the Gaussian window:

[0141]

[0142] σ is a real number used to normalize the power of the window sequence.

[0143] Next, in step S430, a time domain signal may be generated based on the above sequence. For example, first, the above sequence may be resource mapped to the time-frequency resource allocated for the physical signal to generate the physical signal. For example, the network node may assume that the above sequence is scaled by a factor β that satisfies the transmit power and then perform resource mapping in the following manner to generate the physical signal a k，l :

[0144] a k，l =β·x[n];

[0145] Where k = n, It is the OFDM symbol number assigned to the physical signal.

[0146] After the physical signal is generated, the physical signal may then be subjected to inverse Fourier transform and cyclic prefix addition processing to generate a corresponding OFDM baseband signal.

[0147] In the above second embodiment, compared with the ZC sequence in the LTE or NR standards, a parameter D related to the offset of the physical signal is introduced when generating a sequence corresponding to the physical signal, so that the time domain baseband signal obtained after the physical signal is inversely transformed by Fourier transform has a configurable offset, and the position of the time domain baseband signal in the OFDM symbol where it is located can be dynamically adjusted according to the perceived distance range requirements. In addition, a parameter L related to the time length of the physical signal is also introduced when generating the sequence. q , so that the duration of the time domain baseband signal obtained after the physical signal is inverse Fourier transformed is shorter than the length of an OFDM symbol, so that the signal is no longer aliased in the time domain and the peak-to-average power ratio (PAPR) is greatly reduced, thereby ensuring that the signal can be used for time domain perception. In addition, the windowing operation when generating a sequence corresponding to the physical signal can reduce the Gibbs effect of the time domain baseband signal caused by the inverse Fourier transform, thereby further reducing the PAPR of the time domain baseband signal, so that the time domain baseband signal can be sent at a higher power, thereby improving the perceived distance range. In addition, when generating a sequence corresponding to the physical signal, the phase of each element in the sequence is a quadratic function of the index value of the element, thereby making the time domain signal generated based on the sequence closer to a linear frequency modulation signal and having more stable performance in time domain perception.

[0148] Both the first embodiment and the second embodiment generate a sequence corresponding to the physical signal according to the time length related parameters and the time offset related parameters of the physical signal, and generate the sequence based on the ZC sequence when generating the sequence. The technical effects that can be achieved are the same, except that, in the first embodiment, windowing is performed in the process of generating the physical signal, while in the second embodiment, windowing is performed in the process of generating the sequence corresponding to the physical signal.

[0149] Next, the third embodiment is described. This embodiment takes the physical signal as a single-port physical signal as an example. According to the third embodiment, the configuration information may include first to fourth configuration information. The fourth configuration information may include windowing indication information, window sequence type indication information, and window sequence parameter p. The configuration information may not include the fifth configuration information. In the case where the fifth configuration information is not included in the configuration information, it may be defaulted that a sequence corresponding to the physical signal is not generated based on a ZC sequence. Alternatively, the configuration information may include the fifth configuration information, and in the case where the sequence type indication information included in the fifth configuration information indicates that a sequence corresponding to the physical signal is not generated based on a ZC sequence, a sequence corresponding to the physical signal may not be generated based on a ZC sequence.

[0150] For example, the method of generating a sequence corresponding to the physical signal in step S420 may be as follows:

[0151] The sequence x[0], ..., x[M-1] can be given by:

[0152]

[0153] in:

[0154] (1) is the sequence length, which is also the number of resource particles in the bandwidth allocated for the physical signal, N RB is the number of resource blocks allocated for the physical signal, is the number of resource particles in a resource block;

[0155] (2) θ can be any phase independent of n;

[0156] Next, in step S430, a time domain signal may be generated based on the above sequence.

[0157] First, the above sequence may be resource mapped to the time-frequency resources allocated for the physical signal to generate the physical signal. For example, the network node may assume that the above sequence is scaled by a factor β that satisfies the transmit power and then perform resource mapping in the following manner:

[0158] If the window indication information in the fourth configuration information indicates not to add a window, then a k，l =β·x[n];

[0159] If the window indication information in the fourth configuration information indicates windowing, then a k，l =β·w[n]x[n];

[0160] in:

[0161] (1) k = n, It is the OFDM symbol number assigned to the physical signal.

[0162] (2) The window type indication information of the fourth configuration information may indicate that a Kaiser window is used when adding windows, and then a window sequence w[n] may be obtained based on the Kaiser window:

[0163]

[0164] Among them I 0 [·] is the Bessel function of the first kind, and σ is a real number used to normalize the power of the window sequence.

[0165] It should be noted that, in this embodiment, the window type indication information in the fourth configuration information is not limited to the Kaiser window when indicating the window function used in windowing, and may also indicate the use of other window functions in windowing. For example, the window type indication information in the fourth configuration information may also indicate the use of a Gaussian window in windowing, and then the window sequence w[n] may be obtained based on the Gaussian window:

[0166]

[0167] Here, σ is a real number used to normalize the power of the window sequence.

[0168] After the physical signal is generated, the physical signal may then be subjected to inverse Fourier transform and cyclic prefix addition processing to generate a corresponding OFDM baseband signal.

[0169] In the third embodiment described above, a parameter γ related to the offset of the physical signal is introduced when generating a sequence corresponding to the physical signal, so that the time domain baseband signal obtained after the physical signal is inversely transformed by Fourier has a configurable offset, and the position of the time domain baseband signal in the OFDM symbol in which it is located can be dynamically adjusted according to the perceived distance range requirements, and a parameter μ related to the time length of the physical signal is also introduced, so that the time length of the time domain baseband signal obtained after the physical signal is inversely transformed by Fourier is shorter than the length of an OFDM symbol, so that the signal is no longer aliased in the time domain and the peak-to-average power ratio (PAPR) is greatly reduced, thereby ensuring that the signal can be used for time domain perception. In addition, in the third embodiment described above, the phase of each element in the sequence corresponding to the physical signal is a strict quadratic function of the index value of the element, which makes the time domain signal generated based on the sequence closer to the linear frequency modulation signal, and based on more stable performance in time domain perception. In addition, the windowing operation when performing resource mapping to generate the physical signal can reduce the Gibbs effect of the time domain baseband signal caused by the inverse Fourier transform, thereby further reducing the PAPR of the time domain baseband signal, so that the time domain baseband signal can be sent with higher power, thereby improving the perceived distance range.

[0170] The fourth embodiment is described below. This embodiment takes the physical signal as a single-port physical signal as an example. According to the fourth embodiment, the configuration information may include first to fourth configuration information. The fourth configuration information may include windowing indication information, window sequence type indication information, and window sequence parameter p. The configuration information may not include the fifth configuration information. In the case where the fifth configuration information is not included in the configuration information, it may be defaulted not to generate a sequence corresponding to the physical signal based on the ZC sequence. Alternatively, the configuration information may include the fifth configuration information, and in the case where the sequence type indication information included in the fifth configuration information indicates that a sequence corresponding to the physical signal is not generated based on the ZC sequence, the sequence corresponding to the physical signal may not be generated based on the ZC sequence.

[0171] For example, the method of generating a sequence corresponding to the physical signal in step S420 may be as follows:

[0172] The sequence x[0], ..., x[M-1] can be given by:

[0173] If the window indication information in the configuration information indicates not to add a window, then:

[0174]

[0175] If the window indication information in the configuration information indicates windowing, then:

[0176]

[0177] in:

[0178] (1) is the sequence length, which is also the number of resource particles in the bandwidth allocated for the physical signal, N RB is the number of resource blocks allocated for the physical signal, is the number of resource particles in a resource block;

[0179] (2) θ can be any phase independent of n;

[0180] (3) The window type indication information in the fourth configuration information may indicate that a Kaiser window is used when adding windows, and then a window sequence w[n] may be generated based on the Kaiser window:

[0181]

[0182] Among them I 0 [·] is the Bessel function of the first kind, and σ is a real number used to normalize the power of the window sequence.

[0183] It should be noted that, when the window type indication information in the fourth configuration information in this embodiment indicates the window function used in windowing, it is not limited to the Kaiser window, and other window functions may be used in windowing. For example, the window type indication information in the fourth configuration information may also indicate that a Gaussian window is used in windowing, and then a window sequence w[n] may be generated based on the Gaussian window:

[0184]

[0185] Here, σ is a real number used to normalize the power of the window sequence.

[0186] Next, in step S430, a time domain signal may be generated based on the above sequence. For example, first, the above sequence may be resource mapped to the time-frequency resource allocated for the physical signal to generate the physical signal. For example, the network node may assume that the above sequence is scaled by a factor β that satisfies the transmit power and then perform resource mapping in the following manner to generate the physical signal a k，l :

[0187] a k，l =β·x[n];

[0188] Where k = n, It is the OFDM symbol number assigned to the physical signal.

[0189] After the physical signal is generated, the physical signal may then be subjected to inverse Fourier transform and cyclic prefix addition processing to generate a corresponding OFDM baseband signal.

[0190] In the fourth embodiment, a parameter γ related to the offset of the physical signal is introduced when generating a sequence corresponding to the physical signal, so that the time domain baseband signal obtained after the physical signal is inversely transformed by Fourier has a configurable offset, and the position of the time domain baseband signal in the OFDM symbol in which it is located can be dynamically adjusted according to the perceived distance range requirements, and a parameter μ related to the time length of the physical signal is also introduced, so that the time length of the time domain baseband signal obtained after the physical signal is inversely transformed by Fourier is shorter than the length of an OFDM symbol, so that the signal is no longer aliased in the time domain and the peak-to-average power ratio (PAPR) is greatly reduced, thereby ensuring that the signal can be used for time domain perception. In addition, in the fourth embodiment, the phase of each element in the sequence corresponding to the physical signal is a strict quadratic function of the index value of the element, which makes the time domain signal generated based on the sequence closer to the linear frequency modulation signal, and based on more stable performance in time domain perception. In addition, the windowing operation when generating a sequence corresponding to the physical signal can reduce the Gibbs effect of the time domain baseband signal caused by the inverse Fourier transform, thereby further reducing the PAPR of the time domain baseband signal, so that the time domain baseband signal can be sent with higher power, thereby improving the perceived distance range.

[0191] The third embodiment and the fourth embodiment both generate a sequence corresponding to the physical signal based on the time length related parameters and the time offset related parameters of the physical signal, and the sequence is not generated based on the ZC sequence when generating the sequence. The technical effects that they can achieve are the same, except that in the third embodiment, windowing is performed in the process of generating the physical signal, while in the fourth embodiment, windowing is performed in the process of generating the sequence corresponding to the physical signal.

[0192] The above has been referred to Figures 4 to 5 A method performed by a communication node according to an embodiment of the present disclosure is described. According to the method, a sequence is generated according to time length related parameters of a physical signal obtained based on configuration information and a time domain signal generated based on the sequence is sent and / or received. Since the time domain signal generated based on the sequence is no longer aliased in the time domain and the peak-to-average power ratio (PAPR) is greatly reduced, it has better time domain perception capability. Therefore, when the sent and / or received time domain signal is used for communication perception integration, it can be beneficial to better realize communication perception integration.

[0193] Figure 6 is a block diagram showing a first terminal according to an embodiment of the present disclosure. Figure 6 The communication node 600 may include a transceiver 601 and a processor 602, wherein the processor 602 is coupled to the transceiver 601 and configured to perform the above-mentioned Figure 4 According to the embodiment, the communication node may be a terminal, a base station, etc., as long as it is a node with a communication function.

[0194] In addition, according to an embodiment of the present disclosure, a computer-readable storage medium storing instructions may also be provided, wherein when the instructions are executed by at least one processor, the at least one processor is prompted to execute the method mentioned above. Examples of computer-readable storage media here include: read-only memory (ROM), random access programmable read-only memory (PROM), electrically erasable programmable read-only memory (EEPROM), random access memory (RAM), dynamic random access memory (DRAM), static random access memory (SRAM), flash memory, non-volatile memory, CD-ROM, CD-R, CD+R, CD-RW, CD+RW, DVD-ROM, DVD-R, DVD+R, DVD-RW, DVD+RW, DVD-RAM, BD-ROM, BD-R, BD-R LTH, BD-RE, Blu-ray or optical disk storage, hard disk drive (HDD), solid state drive (SSD), card storage (such as, multimedia card, secure digital (SD) card or extreme digital (XD) card), magnetic tape, floppy disk, magneto-optical data storage device, optical data storage device, hard disk, solid state disk and any other device, any other device is configured to store computer programs and any associated data, data files and data structures in a non-transitory manner and provide the computer programs and any associated data, data files and data structures to a processor or computer so that the processor or computer can execute the computer program. The instructions or computer programs in the above-mentioned computer-readable storage medium can be run in an environment deployed in a computer device such as a client, a host, an agent device, a server, etc. In addition, in one example, the computer program and any associated data, data files and data structures are distributed on a networked computer system, so that the computer program and any associated data, data files and data structures are stored, accessed and executed in a distributed manner by one or more processors or computers.

[0195] Those skilled in the art will readily appreciate other embodiments of the present disclosure after considering the specification and practicing the invention disclosed herein. This application is intended to cover any variations, uses or adaptations of the present disclosure, which follow the general principles of the present disclosure and include common knowledge or customary techniques in the art that are not disclosed in the present disclosure. The specification and examples are intended to be exemplary only, and the true scope and spirit of the present disclosure are defined by the claims.

Claims

1. A method performed by a communication node in a communication system, comprising: Get the configuration information of the physical signal; generating a sequence corresponding to the physical signal according to a time length related parameter of the physical signal obtained based on the configuration information; A time domain signal generated based on the sequence is transmitted and / or received.

2. The method of claim 1, wherein: The step of generating a sequence corresponding to the physical signal according to a time length related parameter of the physical signal obtained based on the configuration information comprises: A sequence corresponding to the physical signal is generated according to the time length related parameters and the time offset related parameters of the physical signal obtained based on the configuration information.

3. The method according to claim 1 or 2, wherein: The configuration information includes at least one of the following items: first configuration information related to the time length of the physical signal, second configuration information related to the time offset of the physical signal, and third configuration information related to time-frequency resources allocated to the physical signal.

4. The method according to claim 3, wherein: The generating the time domain signal based on the sequence comprises: Performing resource mapping on the sequence, mapping the sequence to the time-frequency resources allocated to the physical signal based on the configuration information to generate the physical signal; Perform inverse Fourier transform and cyclic prefix addition processing on the physical signal to generate an orthogonal frequency division multiplexing (OFDM) baseband signal corresponding to the physical signal as the time domain signal.

5. The method according to claim 4, wherein: The configuration information also includes: Fourth configuration information related to windowing processing of the sequence or the physical signal, used to configure whether to perform or not perform windowing processing on the sequence or the physical signal in the process of generating the sequence or generating the physical signal; and / or The fifth configuration information related to the type of the sequence is used to configure whether to generate the sequence corresponding to the physical signal based on the ZC sequence.

6. The method according to claim 1, wherein: The physical signal has the same signal amplitude on the resource elements included in the time-frequency resources allocated to the physical signal, or the physical signal has different signal amplitudes on at least two resource elements among the resource elements included in the time-frequency resources allocated to the physical signal.

7. The method according to claim 1, wherein: The phase of each element in the sequence is a quadratic function of the index value of the element.

8. The method according to claim 3, wherein: The first configuration information includes at least one of the following items: a ratio of the time length of the physical signal to the length of an OFDM waveform; the time length of the physical signal; the number of samples corresponding to the time length of the physical signal; and / or The second configuration information includes at least one of the following items: a ratio of the time offset of the physical signal to the length of an OFDM waveform; a time offset of the physical signal within an OFDM symbol; a number of samples corresponding to the time offset of the physical signal within an OFDM symbol; and / or The third configuration information includes at least one of time domain resource information and frequency domain resource information of the physical signal.

9. The method according to claim 5, wherein: The fourth configuration information includes at least one of the following items: first information for indicating whether to perform windowing processing on the sequence or the physical signal, a window sequence, second information for indicating a type of the window sequence, and a parameter related to the window sequence; and / or The fifth configuration information includes at least one of the following items: a group number into which the sequence is grouped, a sequence number within each group of the sequence, and third information indicating whether to generate a sequence corresponding to the physical signal based on a ZC sequence.

10. The method according to claim 9, wherein: If the configuration information does not include fourth configuration information, or the configuration information includes fourth configuration information but the fourth configuration information does not include the first information, the windowing process of the sequence or the physical signal is not performed; or If the configuration information includes fourth configuration information and the fourth configuration information includes at least one of a window sequence, the second information and a parameter related to the window sequence, a windowing process of the sequence or the physical signal is performed; or If the configuration information does not include the fifth configuration information, or the configuration information includes the fifth configuration information but the fifth configuration information does not include the third information or does not include the group sequence number and the sequence sequence number, the sequence corresponding to the physical signal is not generated based on the ZC sequence; or If the configuration information includes fifth configuration information and the fifth configuration information includes the group number and the sequence number, the sequence corresponding to the physical signal is generated based on a ZC sequence.

11. The method according to claim 1 or 2, wherein: The time length related parameter includes a first value or a first parameter value obtained based on the first value, wherein the first value is a ratio of the time length of the physical signal to a length of an OFDM waveform, and the first value is a positive number not greater than 1; and / or The time offset related parameter includes a second value or a second parameter value obtained based on the second value, wherein the second value is the ratio of the time offset of the physical signal to the length of an OFDM waveform, and the second value is a non-negative real number not exceeding 1 and the result obtained by subtracting the second value from the first value.

12. The method according to claim 11, wherein: In case the type of the sequence is a ZC sequence, The first parameter value is a prime number obtained based on a third value and the first value, wherein the third value is a value that is mutually prime to a maximum prime number that is not greater than the length of the sequence; and / or The second parameter value is a value obtained based on the first value, the second value and the maximum prime number.

13. A communication node, comprising: Transceiver; A processor is coupled to the transceiver and configured to execute the method according to any one of claims 1 to 12.

14. A computer-readable storage medium storing instructions, which, when executed by at least one processor, cause the at least one processor to perform the method according to any one of claims 1 to 12.

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