WO2024217360A1 - Sensing signal transmission method and apparatus, and terminal and network-side device - Google Patents

Abstract

The present application belongs to the technical field of communications. Disclosed are a sensing signal transmission method and apparatus, and a terminal and a network-side device. The sensing signal transmission method in the embodiments of the present application comprises: a terminal sending a first sensing signal, wherein the first sensing signal is mapped onto a first transmission resource, the first transmission resource comprises N₁ resource blocks, each resource block among the N₁ resource blocks comprises L frequency-domain units, the N₁ resource blocks are at equal intervals in a frequency domain, N₁ and L both being positive integers, the first sensing signal is determined according to a first sensing symbol sequence and a second sensing symbol sequence, the length of the first sensing symbol sequence is N₁, the length of the second sensing symbol sequence is L₁, L₁ being the number of frequency-domain units, which are used for transmitting sensing signals, among the L frequency-domain units, and the L₁ frequency-domain units for transmitting sensing signals are at equal intervals in the frequency domain, L₁ being an integer greater than or equal to 1 and less than or equal to L.

Description

Perception signal transmission method, device, terminal and network side equipment

CROSS-REFERENCE TO RELATED APPLICATIONS

This application claims priority to Chinese Patent Application No. 202310437473.7 filed in China on April 21, 2023, the entire contents of which are incorporated herein by reference.

Technical Field

The present application belongs to the field of communication technology, and specifically relates to a perception signal transmission method, device, terminal and network side equipment.

Background Art

With the development of mobile communication technology, future mobile communication systems, such as Beyond 5th-Generation (B5G) systems or ^6th Generation (6G) communication systems, will not only have communication capabilities but also perception capabilities, that is, they will be able to perceive the direction, distance, speed and other information of the target object by sending and receiving perception signals, or detect, track, identify and image the target object, event or environment.

Peak to Average Power Ratio (PAPR) is the ratio of the peak power of the signal to the average power of the carrier. For the perception signal, the larger the PAPR, the lower the efficiency of the power amplifier, and the lower the transmission efficiency of the corresponding perception signal. Therefore, it is necessary to control the PAPR of the perception signal as small as possible. However, there is no corresponding solution for how to control the PAPR of the perception signal in the related art.

Summary of the invention

The embodiments of the present application provide a perception signal transmission method, apparatus, terminal, and network-side equipment, which can flexibly control the PAPR of the perception signal.

In a first aspect, a method for transmitting a perception signal is provided, the method comprising:

The terminal sends a first perception signal;

The first perception signal is mapped on a first transmission resource, the first transmission resource includes _N1 resource blocks, each of the _N1 resource blocks includes L frequency domain units, and the _N1 resource blocks are equally spaced in the frequency domain, and _N1 and L are both positive integers;

The first perception signal is determined according to a first perception symbol sequence and a second perception symbol sequence, the length of the first perception symbol sequence is N ₁ , the length of the second perception symbol sequence is L ₁ , L ₁ is the number of frequency domain units in the L frequency domain units used to transmit the perception signal, and the L ₁ frequency domain units used to transmit the perception signal are equally spaced in the frequency domain, and L ₁ is an integer greater than or equal to 1 and less than or equal to L.

In a second aspect, a perception signal transmission device is provided, the device comprising:

A first sending module, used to send a first perception signal;

The first perception signal is mapped on a first transmission resource, and the first transmission resource includes N ₁ resources. Each of the N ₁ resource blocks includes L frequency domain units, and the N ₁ resource blocks are equally spaced in the frequency domain, and N ₁ and L are both positive integers;

The first perception signal is determined according to a first perception symbol sequence and a second perception symbol sequence, the length of the first perception symbol sequence is N ₁ , the length of the second perception symbol sequence is L ₁ , L ₁ is the number of frequency domain units in the L frequency domain units used to transmit the perception signal, and the L ₁ frequency domain units used to transmit the perception signal are equally spaced in the frequency domain, and L ₁ is an integer greater than or equal to 1 and less than or equal to L.

In a third aspect, a method for transmitting a perception signal is provided, the method comprising:

The network side device receives the first perception signal;

The first perception signal is mapped on a first transmission resource, the first transmission resource includes _N1 resource blocks, each of the _N1 resource blocks includes L frequency domain units, and the _N1 resource blocks are equally spaced in the frequency domain, and _N1 and L are both positive integers;

The first perception signal is determined according to a first perception symbol sequence and a second perception symbol sequence, the length of the first perception symbol sequence is N ₁ , the length of the second perception symbol sequence is L ₁ , L ₁ is the number of frequency domain units in the L frequency domain units used to transmit the perception signal, and the L ₁ frequency domain units used to transmit the perception signal are equally spaced in the frequency domain, and L ₁ is an integer greater than or equal to 1 and less than or equal to L.

In a fourth aspect, a perception signal transmission device is provided, the device comprising:

A first receiving module, configured to receive a first sensing signal;

The first perception signal is mapped on a first transmission resource, the first transmission resource includes _N1 resource blocks, each of the _N1 resource blocks includes L frequency domain units, and the _N1 resource blocks are equally spaced in the frequency domain, and _N1 and L are both positive integers;

The first perception signal is determined according to a first perception symbol sequence and a second perception symbol sequence, the length of the first perception symbol sequence is N ₁ , the length of the second perception symbol sequence is L ₁ , L ₁ is the number of frequency domain units in the L frequency domain units used to transmit the perception signal, and the L ₁ frequency domain units used to transmit the perception signal are equally spaced in the frequency domain, and L ₁ is an integer greater than or equal to 1 and less than or equal to L.

In a fifth aspect, a terminal is provided, comprising a processor and a memory, wherein the memory stores a program or instruction that can be run on the processor, and when the program or instruction is executed by the processor, the steps of the method described in the first aspect are implemented.

In a sixth aspect, a terminal is provided, comprising a processor and a communication interface, wherein the communication interface is used to send a first perception signal; wherein the first perception signal is mapped on a first transmission resource, the first transmission resource comprises _N1 resource blocks, each of the _N1 resource blocks comprises L frequency domain units, and the _N1 resource blocks are equally spaced in the frequency domain, and _N1 and L are both positive integers; the first perception signal is determined according to a first perception symbol sequence and a second perception symbol sequence, the length of the first perception symbol sequence is _N1 , the length of the second perception symbol sequence is _L1 , _L1 is the number of frequency domain units in the L frequency domain units used to transmit the perception signal, and the _L1 frequency domain units used to transmit the perception signal are equally spaced in the frequency domain, and _L1 is an integer greater than or equal to 1 and less than or equal to L.

In the seventh aspect, a network side device is provided, which includes a processor and a memory, wherein the memory stores programs or instructions that can be run on the processor, and when the program or instructions are executed by the processor, the steps of the method described in the third aspect are implemented.

In an eighth aspect, a network side device is provided, comprising a processor and a communication interface, wherein the communication interface is used to receive a first perception signal; wherein the first perception signal is mapped on a first transmission resource, the first transmission resource comprises _N1 resource blocks, each of the _N1 resource blocks comprises L frequency domain units, and the _N1 resource blocks are equally spaced in the frequency domain, and _N1 and L are both positive integers; the first perception signal is determined according to a first perception symbol sequence and a second perception symbol sequence, the length of the first perception symbol sequence is _N1 , the length of the second perception symbol sequence is _L1 , _L1 is the number of frequency domain units in the L frequency domain units used to transmit the perception signal, and the _L1 frequency domain units used to transmit the perception signal are equally spaced in the frequency domain, and _L1 is an integer greater than or equal to 1 and less than or equal to L.

In the ninth aspect, a perception signal transmission system is provided, comprising: a terminal and a network side device, wherein the terminal can be used to execute the steps of the perception signal transmission method as described in the first aspect, and the network side device can be used to execute the steps of the perception signal transmission method as described in the third aspect.

In the tenth aspect, a readable storage medium is provided, on which a program or instruction is stored. When the program or instruction is executed by a processor, the steps of the method described in the first aspect are implemented, or the steps of the method described in the third aspect are implemented.

In the eleventh aspect, a chip is provided, comprising a processor and a communication interface, wherein the communication interface is coupled to the processor, and the processor is used to run a program or instructions to implement the steps of the method described in the first aspect, or to implement the steps of the method described in the third aspect.

In the twelfth aspect, a computer program/program product is provided, wherein the computer program/program product is stored in a storage medium, and the computer program/program product is executed by at least one processor to implement the steps of the method described in the first aspect, or to implement the steps of the method described in the third aspect.

In an embodiment of the present application, a terminal sends a first perception signal; wherein the first perception signal is mapped on a first transmission resource, the first transmission resource includes _N1 resource blocks, each of the _N1 resource blocks includes L frequency domain units, and the _N1 resource blocks are equally spaced in the frequency domain; the first perception signal is determined according to a first perception symbol sequence and a second perception symbol sequence, the length of the first perception symbol sequence is _N1 , the length of the second perception symbol sequence is _L1 , _L1 is the number of frequency domain units in the L frequency domain units used to transmit the perception signal, and the _L1 frequency domain units used to transmit the perception signal are equally spaced in the frequency domain. Since the first perception signal is determined according to the first perception symbol sequence with a length of _N1 and the second perception symbol sequence with a length of L1, the PAPR of the first perception signal can be controlled by controlling the PAPR of the first perception symbol sequence and the PAPR of the second perception symbol sequence respectively, so as to improve the flexibility of the PAPR control of the perception signal. In addition, since the length of the first perception symbol sequence is _N1 , the first perception symbol sequence has a length of N1, and the second perception symbol sequence has a length of L1, the first perception signal has a length of L1, and the first perception signal has a length of _L1. Therefore, the PAPR of the first perception symbol sequence can be relatively simply controlled to be close to zero, so that the PAPR of the first perception signal can be minimized by controlling the minimization of the PAPR of the second perception symbol sequence, thereby reducing the PAPR of the perception signal.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG1 is a block diagram of a wireless communication system to which an embodiment of the present application can be applied;

FIG2a is a schematic diagram of a local mapping method provided in an embodiment of the present application;

FIG2b is a schematic diagram of a distributed mapping method provided in an embodiment of the present application;

FIG3 is a flow chart of a method for transmitting a perception signal provided in an embodiment of the present application;

FIG4a is a schematic diagram of perceptual signal resource allocation based on OFDM resource blocks according to an embodiment of the present application;

FIG4b is a schematic diagram of a resource block provided in an embodiment of the present application;

FIG5 is a schematic diagram of perception signal generation and mapping provided in an embodiment of the present application;

FIG6 is a schematic diagram of generating a perception signal based on a constant symbol according to an embodiment of the present application;

FIG7 is a schematic diagram of resource allocation of perception signals provided in an embodiment of the present application;

FIG8 is a schematic diagram of mapping and processing of perception symbols on OFDM frequency domain resources provided in an embodiment of the present application;

FIG9 is a schematic diagram of mapping and processing of perception symbols on OFDM time domain resources provided in an embodiment of the present application;

FIG10 is a schematic diagram of perceptual signal resource allocation of OFDM symbols in a time domain period provided by an embodiment of the present application;

FIG11 is a schematic diagram of PAPR performance of different OFDM modulation schemes provided in an embodiment of the present application;

FIG12 is a flowchart of another method for transmitting a perception signal provided in an embodiment of the present application;

FIG13 is a structural diagram of a perception signal transmission device provided in an embodiment of the present application;

FIG14 is a structural diagram of another perception signal transmission device provided in an embodiment of the present application;

FIG15 is a structural diagram of a communication device provided in an embodiment of the present application;

FIG16 is a structural diagram of a terminal provided in an embodiment of the present application;

FIG. 17 is a structural diagram of a network-side device provided in an embodiment of the present application.

DETAILED DESCRIPTION

The following will be combined with the drawings in the embodiments of the present application to clearly describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field belong to the scope of protection of this application.

The terms "first", "second", etc. of the present application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the terms used in this way are interchangeable where appropriate, so that the embodiments of the present application can be implemented in an order other than those illustrated or described herein, and the objects distinguished by "first" and "second" are generally of one type, and the number of objects is not limited, for example, the first object can be one or more. In addition, "or" in the present application represents at least one of the connected objects. For example, "A or B" covers three schemes, namely, Scheme 1: including A but not including B; Scheme 2: including B but not including A; Scheme 3: including both A and B. The character "/" generally indicates that the objects associated with each other are in an "or" relationship.

The term "indication" in this application can be a direct indication (or explicit indication) or an indirect indication (or implicit indication). A direct indication can be understood as the sending party sending an indication. The instructions clearly inform the recipient of the specific information, operations to be performed or request results, etc.; indirect instructions can be understood as the recipient determining the corresponding information based on the instructions sent by the sender, or making a judgment and determining the operations to be performed or request results based on the judgment results.

It is worth noting that the technology described in the embodiments of the present application is not limited to the Long Term Evolution (LTE)/LTE-Advanced (LTE-A) system, but can also be used in other wireless communication systems, such as Code Division Multiple Access (CDMA), Time Division Multiple Access (TDMA), Frequency Division Multiple Access (FDMA), Orthogonal Frequency Division Multiple Access (OFDMA), Single-carrier Frequency Division Multiple Access (SC-FDMA) or other systems. The terms "system" and "network" in the embodiments of the present application are often used interchangeably, and the described technology can be used for the above-mentioned systems and radio technologies as well as other systems and radio technologies. The following description describes a New Radio (NR) system for example purposes, and NR terms are used in most of the following descriptions, but these technologies can also be applied to systems other than NR systems, such as ^6th Generation (6G) communication systems.

FIG1 shows a block diagram of a wireless communication system applicable to an embodiment of the present application. The wireless communication system includes a terminal 11 and a network side device 12. The terminal 11 may be a mobile phone, a tablet computer (Tablet Personal Computer), a laptop computer (Laptop Computer), a notebook computer, a personal digital assistant (Personal Digital Assistant, PDA), a handheld computer, a netbook, an ultra-mobile personal computer (Ultra-mobile Personal Computer, UMPC), a mobile Internet device (Mobile Internet Device, MID), an augmented reality (Augmented Reality, AR), a virtual reality (Virtual Reality, VR) device, a robot, a wearable device (Wearable Device), an aircraft (flight vehicle), a vehicle user equipment (VUE), a shipborne equipment, a pedestrian terminal (Pedestrian User Equipment, PUE), a smart home (a home appliance with wireless communication function, such as a refrigerator, a television, a washing machine or furniture, etc.), a game console, a personal computer (Personal Computer, PC), a teller machine or a self-service machine and other terminal side devices. Wearable devices include: smart watches, smart bracelets, smart headphones, smart glasses, smart jewelry (smart bracelets, smart bracelets, smart rings, smart necklaces, smart anklets, smart anklets, etc.), smart wristbands, smart clothing, etc. Among them, the vehicle-mounted device can also be called a vehicle-mounted terminal, a vehicle-mounted controller, a vehicle-mounted module, a vehicle-mounted component, a vehicle-mounted chip or a vehicle-mounted unit, etc. It should be noted that the specific type of the terminal 11 is not limited in the embodiment of the present application. The network side device 12 may include an access network device or a core network device, wherein the access network device may also be referred to as a radio access network (Radio Access Network, RAN) device, a radio access network function or a radio access network unit. The access network device may include a base station, a wireless local area network (Wireless Local Area Network, WLAN) access point (Access Point, AS) or a wireless fidelity (Wireless Fidelity, WiFi) node, etc. Among them, the base station may be referred to as Node B (NB), Evolved Node B (eNB), the next generation Node B (gNB), New Radio Node B (NR Node B), access point, Relay Base Station (RBS), Serving Base Station (SBS), Base Transceiver Station (BTS), radio base station, radio transceiver, Basic Service Set (BSS), Extended Service Set (ESS), home Node B (HNB), home evolved Node B (home evolved Node B), Transmission Reception Point (TRP) or some other appropriate term in the field, as long as the same technical effect is achieved, the base station is not limited to specific technical vocabulary. It should be noted that in the embodiments of the present application, only the base station in the NR system is introduced as an example, and the specific type of the base station is not limited.

The core network equipment may include but is not limited to at least one of the following: core network nodes, core network functions, mobility management entity (Mobility Management Entity, MME), access mobility management function (Access and Mobility Management Function, AMF), session management function (Session Management Function, SMF), user plane function (User Plane Function, UPF), policy control function (Policy Control Function, PCF), policy and charging rules function unit (Policy and Charging Rules Function, PCRF), edge application service discovery function (Edge Application Server Discovery ... user plane function (User Plane Function, UPF), user plane function (User Plane Function, UPF), user plane function (User Plane Function, UPF), user plane function (User Plane Function, UPF), user plane function (User Plane Function, UPF), user plane function (User Plane Function, UPF), user plane function (User Plane Function, UPF), user plane function (User Plane Function, UPF), user plane function (User Plane Function, UPF), user plane function (User Plane Function, UPF), user ion, EASDF), Unified Data Management (UDM), Unified Data Repository (UDR), Home Subscriber Server (HSS), Centralized network configuration (CNC), Network Repository Function (NRF), Network Exposure Function (NEF), Local NEF (or L-NEF), Binding Support Function (BSF), Application Function (AF), etc. It should be noted that in the embodiments of the present application, only the core network device in the NR system is taken as an example for introduction, and the specific type of the core network device is not limited.

For ease of understanding, some contents involved in the embodiments of the present application are described below:

1. Typical scenarios of synaesthesia integration

At present, the typical communication perception integration scenarios that can be achieved by 5G communication systems are shown in Table 1.

Table 1 Typical scenarios of communication perception integration

2. Single Carrier Frequency Domain Multiple Access (SC-FDMA) Transmission Method

In order to reduce the PAPR in uplink communication, NR adopts the SC-FDMA method with low PAPR. Specifically, there are two methods for subcarrier mapping between users using the SC-FDMA method: localized mapping and distributed mapping. The former is shown in Figure 2a and is usually called localized frequency division multiple access transmission method (Localized-FDMA, L-FDMA), while the latter is shown in Figure 2b and is usually called distributed Frequency division multiple access transmission method (Distributed-FDMA, D-FDMA).

For the distributed frequency division multiple access transmission method, since the symbols are equally spread over the entire signal band, the distributed frequency division multiple access transmission method is more robust and effective against frequency selective fading. In addition, if the occupied subcarriers in the entire frequency band are equidistant, the distributed frequency division multiple access transmission method is called the interleaved frequency division multiple access (I-FDMA) transmission method, and its PAPR can be kept to a minimum.

III. PAPR Definition

PAPR is the ratio of the peak power of an Orthogonal Frequency Division Multiplexing (OFDM) signal to the average power of the carrier. For a digital OFDM signal, its PAPR is defined as:

For analog OFDM signals, its PAPR is defined as:

Where |x _n | ² or |x(t)| ² is the peak power of the OFDM signal, E{|x _n | ² } or are the average carrier power, N is the number of time domain samples in an OFDM symbol, and T is the time length of an OFDM symbol.

In addition, in order to evaluate the performance of PAPR, the complementary cumulative distribution function (CCDF) is generally used as a performance evaluation indicator. CCDF represents the probability that the signal power level remains above a specific power level. The CCDF used in PAPR can be defined as:

Among them, PAPR ₀ is the allowed PAPR value.

4. Zadoff-Chu sequence (ZC sequence) generation method

The basic form of the ZC sequence can be generated by the following formula:

Wherein, N _zc is the length of the ZC sequence, 0≤m≤N _ZC -1, q is the index of the ZC sequence, which is a positive integer coprime with N _zc , and p is an arbitrary integer.

It is worth noting that the ZC sequence is the most commonly used Constant Amplitude Zero Auto-Correlation (CAZAC) sequence, which has the characteristics of constant power in both frequency and time domains. Therefore, in the uplink of NR, the ZC sequence is usually considered as an effective sequence to reduce PAPR.

The following is a detailed description of the perception signal transmission method provided in the embodiment of the present application through some embodiments and their application scenarios in combination with the accompanying drawings.

Please refer to FIG. 3, which is a flowchart of a method for transmitting a perception signal provided in an embodiment of the present application. The method can be executed by a terminal, as shown in FIG. 3, and includes the following steps:

Step 301: The terminal sends a first perception signal;

The first perception signal is mapped on a first transmission resource, the first transmission resource includes _N1 resource blocks, each of the _N1 resource blocks includes L frequency domain units, and the _N1 resource blocks are equally spaced in the frequency domain, and _N1 and L are both positive integers;

The first perception signal is determined according to a first perception symbol sequence and a second perception symbol sequence, the length of the first perception symbol sequence is N ₁ , the length of the second perception symbol sequence is L ₁ , L ₁ is the number of frequency domain units in the L frequency domain units used to transmit the perception signal, and the L ₁ frequency domain units used to transmit the perception signal are equally spaced in the frequency domain, and L ₁ is an integer greater than or equal to 1 and less than or equal to L.

In this embodiment, the frequency domain unit may include but is not limited to at least one subcarrier.

Each of the _N1 resource blocks includes L frequency domain units, that is, the lengths of the _N1 resource blocks in the frequency domain are the same, and the _N1 resource blocks are equally spaced in the frequency domain. For example, as shown in FIG4a , the length of each resource block in the frequency domain is L, and the interval between two adjacent resource blocks in the frequency domain is K.

The L frequency domain units of each resource block include _L1 frequency domain units for transmitting perceptual signals, and _L1 may be less than or equal to L. For example, as shown in FIG4a, _L1 is equal to L. In the case where _L1 is less than L, _LL1 (i.e., L2) frequency domain units may be frequency domain resources for non-perceptual signal transmission, for example, frequency domain resources for communication signal transmission. Exemplarily, as shown in FIG4b, the L frequency domain units of each resource block include _L1 frequency domain units for perceptual signal transmission and L2 frequency domain units for non-perceptual signal transmission, and each _L11 continuous frequency domain units in the _L1 frequency domain units for perceptual signal transmission and each _L21 continuous frequency domain units in the L2 frequency domain units for non-perceptual signal transmission are interleaved with each other, that is, each _L11 continuous frequency domain units in the _L1 frequency domain units for transmitting perceptual signals are equally spaced in the frequency domain, wherein _L11 and _L21 are both positive integers.

It should be noted that, in order to reduce the PAPR value, the value of _L1 is equal to 1 or equal to L. It is worth noting that the sensing resource setting of _L1 = 1, L2 ≠ 0 is theoretically equivalent to the sensing resource setting of _L1 = L, L2 = 0. For ease of description, the embodiments of the present application are described below by taking _L1 equal to L as an example.

The first perception signal is determined according to the first perception symbol sequence and the second perception symbol sequence. For example, when both the first perception symbol sequence and the second perception symbol sequence are perception symbol sequences in the frequency domain, the perception symbol sequence of the first perception signal in the frequency domain can be determined according to the first perception symbol sequence and the second perception symbol sequence, and then the perception symbol sequence of the first perception signal in the time domain can be obtained by performing an inverse discrete Fourier transform (IDFT) with a length of N on the perception symbol sequence of the first perception signal in the frequency domain, and then the terminal can send the perception symbol sequence of the first perception signal in the time domain; or, a discrete Fourier transform (DFT) with a length of N ₁ can be performed on the first perception symbol sequence to obtain a fifth perception symbol sequence in the time domain, and a discrete Fourier transform with a length of L ₁ can be performed on the second perception symbol sequence to obtain a sixth perception symbol sequence in the time domain, and then the perception symbol sequence of the first perception signal in the time domain can be determined based on the fifth perception symbol sequence and the sixth perception symbol sequence, and then the terminal can send the perception symbol sequence of the first perception signal in the time domain.

In this embodiment, since the first perception signal is determined according to the first perception symbol sequence with a length of N ₁ and the second perception symbol sequence with a length of L ₁ , the PAPR of the first perception symbol sequence and the second perception symbol sequence can be respectively determined. The PAPR of the first perception signal is controlled by controlling the PAPR of the first perception symbol sequence, which can improve the flexibility of the PAPR control of the perception signal. In addition, since the length of the first perception symbol sequence is N ₁ , the PAPR of the first perception symbol sequence can be relatively simply controlled to be close to zero. In this way, the PAPR of the first perception signal can be minimized by controlling the minimization of the PAPR of the second perception symbol sequence, thereby reducing the PAPR of the perception signal.

The following examples are used to illustrate the embodiments of the present application:

The first transmission resource includes N ₁ resource blocks, the intervals between adjacent resource blocks are equal, the length of each resource block is L frequency domain units, and each frequency domain unit includes at least 1 subcarrier. K is the interval between two resource blocks, N is the number of subcarriers of OFDM symbols, therefore, N = K*N ₁ , and the perceptual signal resource allocation rate is L/K, as shown in FIG4a.

For simplicity, in this example, the frequency domain units for perceptual signal transmission in each resource block are configured continuously, that is, _L1 = L, and L2 = 0. It can be understood that the same is also applicable to the case where the frequency domain units for perceptual signal transmission in the resource block are configured discontinuously.

Any digitally modulated OFDM signal with an OFDM symbol time length of T can be represented in the following form:

Where p(t) is the pulse filter, is the perceived signal on the mth OFDM symbol and is defined as:

Wherein, Xm _,k is the perception symbol mapped on the mth OFDM symbol and the kth subcarrier.

It is worth noting that although the pulse filter will affect the PAPR, this example does not involve the pulse filter waveform design and performance analysis, but simply considers p(t) to be a rectangular pulse filter.

By setting k=K*k ₁ +k ₂ , the perceived symbol X _m,k on the k-th subcarrier of the m-th OFDM symbol can be expressed as:

Wherein, k ₁ =0, 1, ..., N ₁ , k ₂ =0, 1, ..., K, and N = KN ₁ .

Therefore, the above formula (2) can be re-expressed as:

Assume Perception Symbols Split into two independent sub-perception symbols, namely the first perception symbol and the second perceptual symbol Then the above formula (3) can be simplified as:

Since in the mth OFDM symbol, the kth subcarrier, the resource block has only L subcarriers, as shown in FIG4a, the remaining subcarriers are mapped with zero signals. In addition, for simplicity, is regarded as a digital signal with a sampling rate of T/N, so formula (4) can be further described as:

in:

Among them, n=0,1,…,N-1.

It is worth noting that the perceptual symbol in formula (6) is obtained by discrete symbols in the frequency domain The IDFT operation of length N is performed to obtain the perceptual symbol The PAPR of can be easily controlled to be close to zero. The perceptual symbol in formula (7) is obtained by discrete symbols in the frequency domain The IDFT operation of length N is performed to obtain. Since the discrete perceptual symbol in formula (7) The length is L, and the IDFT operation length is N, so the perceptual symbol of formula (7) is Is right Perform oversampling operation to obtain. Therefore, if the perceptual symbol in formula (7) can be By controlling the PAPR of the signal to the minimum value, the PAPR of the entire perceived signal can be minimized.

From the above, we can see that in this example, the perception signal in the time domain consists of independent terms and item The PAPR of the perceived signal can be calculated by and item Independent control can not only improve the flexibility of PAPR control of the perception signal, but also facilitate the effective reduction of the overall PAPR of the perception signal.

Optionally, both the first perception symbol sequence and the second perception symbol sequence are perception symbol sequences in the frequency domain;

The first perceptual symbol sequence is generated according to a first ZC sequence, the length of the first ZC sequence is N ₁ , or the first perceptual symbol sequence is obtained by performing a discrete Fourier transform of a length of N ₁ on a third perceptual symbol sequence;

The second perceptual symbol sequence is generated according to a second ZC sequence, the length of the second ZC sequence is L ₁ , or the second perceptual symbol sequence is obtained by performing a discrete Fourier transform of a length of L ₁ on a fourth perceptual symbol sequence;

The third perceptual symbol sequence and the fourth perceptual symbol sequence are both perceptual symbol sequences in the time domain. In one embodiment, at least one of the first perceptual symbol sequence and the second perceptual symbol sequence can be generated according to a ZC sequence. Since the ZC sequence is the most commonly used constant amplitude zero autocorrelation sequence and has a constant power characteristic in both the frequency domain and the time domain, the first perceptual symbol sequence is generated by the ZC sequence, which can effectively reduce the PAPR of the perceptual signal.

Exemplarily, at least one of the first ZC sequence and the second ZC sequence may be generated based on the above formula (1). For example, the ZC symbol of the first ZC sequence is generated based on the above formula (1): And based on the above formula (1), the ZC symbol of the second ZC sequence is generated Wherein, q ₁ represents the index of the first ZC sequence, q ₂ represents the index of the second ZC sequence, k ₁ =0, 1, ..., N ₁ -1, k ₂ =0, 1, ..., L ₁ -1. Further, the perceptual symbol of the first perceptual symbol sequence is and the perceptual symbols of the second perceptual symbol sequence They are as follows:

In another embodiment, at least one of the first perception symbol sequence and the second perception symbol sequence can be obtained through DFT operation. Since the perception symbol sequence in the time domain can easily control the amplitude of each perception symbol, it is convenient to control the PAPR of the perception signal.

Wherein, each perceptual symbol in the third perceptual symbol sequence and the fourth perceptual symbol sequence can be any symbol. For example, taking _L1 equal to L as an example, the perceptual symbol of the first perceptual sequence is generated by DFT and the perceptual symbols of the second perceptual sequence It can be expressed by the following formula:

Wherein, k ₁ =0, 1, ..., N ₁ -1, k ₂ =0, 1, ..., L-1.

The above x _m,1 (n) and x _m,2 (n) are respectively the perception symbols in the third perception symbol sequence and the fourth perception symbol sequence with determinism in the time domain, and can be generated by symbols such as Quadrature Phase Shift Keying (QPSK), that is:
x _m,1 =[x _m,1 (0),x _m,1 (1),…,x _m,1 (N ₁ -1)]
x _m,2 =[x _m,2 (0),x _m,2 (1),…,x _m,2 (L-1)]

It should be noted that the generation method of at least one of the first perception symbol sequence and the second perception symbol sequence (for example, a generation method based on DFT or a generation method based on a ZC sequence, etc.) can be predefined by a protocol or indicated by a network side device.

The following is an example of the present application with reference to FIG5 :

Taking _L1 equal to L as an example, the perception symbols of the first perception sequence are generated based on the DFT method or the ZC method respectively. and the perceptual symbols of the second perceptual symbol sequence In mode 1, an IDFT of length N is performed on the first perception sequence and the second perception sequence respectively to obtain the perception symbol sequence of the perception symbol in the time domain. and The perceptual symbol of the perceptual symbol sequence in the time domain and Multiply them to obtain the perception symbol of the first perception signal in the time domain In method 2, the perception symbols of the first perception sequence are and the perceptual symbols of the second perceptual symbol sequence Multiply them to get the perception symbol of length N ₁ L Then N ₁ L length of perception symbol Mapped to a frequency domain resource of length N (ie, OFDM subcarrier), and finally generating a perception symbol of the first perception signal in the time domain through an IDFT of length N It should be noted that after mapping the perception symbol of length N ₁ L to the frequency domain resource of length N, the frequency domain resources other than the perception symbol resource need to be padded with zero symbols and then IDFT processing is performed.

In some optional embodiments, at least one of the first perceptual symbol sequence and the second perceptual symbol sequence may be generated in a manner other than the DFT-based generation manner and the ZC sequence-based generation manner, for example, at least one of the first perceptual symbol sequence and the second perceptual symbol sequence may be generated based on a pseudo-random (Pseudo-Noise, PN) sequence.

It should also be noted that the above x _m,1 and x _m,2 are mainly used to generate perception signals, which are known signals in advance and have no requirements on data transmission efficiency. However, the above x _m,1 and _{x m,2} can also be used for data communication transmission, but since these x _m,1 and x _m,2 can only map N ₁ +L data (traditional data communication maps N ₁ ×L data), the data communication transmission efficiency will be greatly reduced.

Optionally, the amplitudes of the respective perceptual symbols in the third perceptual symbol sequence are all the same, and the amplitudes of the respective perceptual symbols in the fourth perceptual symbol sequence are all the same.

In this embodiment, the amplitudes of the respective perception symbols in the third perception symbol sequence are the same, and the amplitudes of the respective perception symbols in the fourth perception symbol sequence are the same, which is beneficial to reducing the PAPR of the perception signal.

It should be noted that the phases of the various perceptual symbols in the third perceptual symbol sequence may be the same or different. The phases of the various perceptual symbols in the fourth perceptual symbol sequence may be the same or different.

Optionally, each perceptual symbol of the fourth perceptual symbol sequence is the same.

The perceptual symbols of the fourth perceptual symbol sequence are all the same, that is, the perceptual symbols of the fourth perceptual symbol sequence are constant symbols. For example, the fourth perceptual symbol sequence x _m,2 (n) can be expressed as follows:
x _m,2 =[x _m,2 (0),x _m,2 (0),…,x _m,2 (0)]

Here, x _m,2 (0) can be any symbol.

In this embodiment, the perception symbols of the fourth perception symbol sequence are all the same, and their corresponding PAPRs may be 0 dB, thereby further reducing the PAPR of the perception signal.

Specifically, if all the perception symbols x _m,2 (n) of the fourth perception symbol sequence remain unchanged in consecutive resource blocks, the PARP thereof can be reduced to zero. The present embodiment is described below with reference to examples:

For simplicity, in this example, it is assumed that the perception symbol X _m,k on the kth subcarrier is independent of the OFDM symbol index m, that is, it can be simplified to X _m,k =X _k , x _m,2 (n)＝x ₂ (n),

Taking _L1 equal to L as an example, as shown in (a) of FIG6 , the perceived symbol x ₂ (n) in the time domain is generated by L=4, N=12, and the sample interval T _c , where x ₂ (0)=x ₂ (1)=x ₂ (2)=x ₂ (3). By performing DFT processing on x ₂ (n), the perceived symbol in the frequency domain is obtained. FIG6(b) shows only Sine wave signal. Since x ₂ (n) is a constant symbol, only the first sampling point among the four sampled points is non-zero, and the remaining sampling points are zero. Then, according to the length of N=12, the perceived symbol Perform zero padding, that is, fill NL = 8 zeros to obtain the perceptual symbol in the frequency domain after adding zeros As shown in (c) of Figure 6. Finally, the perceived symbol in the frequency domain after adding zeros Perform IDFT to obtain the perceived symbols in the time domain As shown in (d) of Figure 6. As can be seen from (d) of Figure 6, in this case, The amplitude is also constant.

Optionally, the second perception symbol sequence is a perception symbol sequence obtained by performing a discrete Fourier transform of a length of _L1 on the fourth perception symbol sequence based on a first phase offset value, and a value range of the first phase offset value is between 0 and 1.

In practical applications, although the PAPR of the fourth perception symbol sequence can be 0 dB when the perception symbols of the fourth perception symbol sequence are the same, the above method is equivalent to mapping the perception symbol only on the first subcarrier in the resource block with continuous subcarriers, and the actual number of perception subcarriers will be reduced, which will have an adverse effect on the perception performance. In each resource block, only one subcarrier is occupied, and the remaining subcarriers are mapped with zero symbols, which results in a reduction in the number of subcarriers actually perceived, affecting the perception performance.

Therefore, in this embodiment, when performing DFT operation on the perceptual symbol x _m,2 in the fourth perceptual symbol sequence, a certain degree of phase shift is adopted, that is, the above formula (9) can be adjusted to:

Wherein, γ is the first phase offset value, that is, the sampling frequency shift factor in the frequency domain, 0≤γ<1.

Table 2 shows the PAPR performance comparison based on the constant symbol x ₂ (n) and considering the frequency domain sampling frequency shift factor γ. As shown in Table 2, when the sampling frequency shift factor γ is close to 0.5, the PAPR is maximum, and when the sampling frequency shift factor γ is close to 0 or 1, the PAPR is minimum.

Table 2

In this embodiment, a certain degree of phase shift is adopted when performing DFT operation on the fourth perception symbol sequence. Although this may lead to an increase in PAPR, the perception performance may be improved accordingly.

Optionally, the index of the first ZC sequence is the same as the index of the second ZC sequence, or the index of the first ZC sequence is different from the index of the second ZC sequence.

Taking the index of the first ZC sequence as q ₁ and the index of the second ZC sequence as q ₂ as an example, q ₁ may be equal to q ₂ , or q ₁ may not be equal to q ₂ .

Optionally, the index of the first ZC sequence is determined according to the length of the first perceptual symbol sequence; or,

The index of the second ZC sequence is determined according to the length of the second perceptual symbol sequence.

It should be noted that the PAPR generated by different ZC sequence indexes q is different, so it is helpful to reduce the PAPR by reasonably setting the ZC sequence index q. Exemplarily, this embodiment can determine the optimal index of the first ZC sequence according to the length of the first perception symbol sequence, or determine the optimal index of the second ZC sequence according to the length of the second perception symbol sequence, so as to minimize the PAPR.

In some optional embodiments, the index of the optimal ZC sequence corresponding to perception symbol sequences of different lengths, that is, the index of the ZC sequence with the lowest PAPR, can be obtained in advance based on simulation analysis, and then the index of the corresponding optimal ZC sequence can be quickly determined based on the length of each perception symbol sequence, and the perception symbol sequence can be generated based on the index of the ZC sequence, thereby reducing the PAPR.

Optionally, the first perception symbol sequence is mapped on the frequency domain units of the N ₁ resource blocks by using an interleaved mapping method, and the second perception symbol is mapped on the frequency domain units of the N ₁ resource blocks by using a local mapping method.

The first perceptual symbol sequence is mapped on the frequency domain units of the _N1 resource blocks in an interleaved mapping manner. In the interleaving mapping method, the number of continuous frequency domain units mapped for perceptual signal transmission is 1, and the mapped frequency domain units are equally spaced, so that the corresponding PAPR can be controlled to be close to 0dB. For example, as shown in resource-1 in Figure 7, the number of continuous frequency domain units mapped for perceptual signal transmission is 1, and the mapped frequency domain units are equally spaced (i.e., 1 frequency domain unit), that is, the frequency domain units for perceptual signal transmission and the frequency domain units for non-perceptual signal transmission of OFDM are interlaced or interleaved (Interlace Mapping), and this mapping method can make the PAPR lower.

The above-mentioned second perception symbol is mapped on the frequency domain units of the N ₁ resource blocks using a local mapping method, wherein the local mapping method can be understood as the number of continuous frequency domain units mapped for perceptual signal transmission is greater than 1, and the continuous frequency domain units mapped are equally spaced. For example, as shown in resource-2 in Figure 7, the number of continuous frequency domain units mapped for perceptual signal transmission is 2, and the continuous frequency domain units mapped are equally spaced (i.e., 2 frequency domain units); or, as shown in resource-3 in Figure 7, the number of continuous frequency domain units mapped for perceptual signal transmission is 4, and the continuous frequency domain units mapped are equally spaced (i.e., 4 frequency domain units); or, as shown in resource-4 in Figure 7, the number of continuous frequency domain units mapped for perceptual signal transmission is 8, and the continuous frequency domain units mapped are equally spaced (i.e., 8 frequency domain units).

It should be noted that the larger the number of continuous frequency domain units mapped, the smaller the inter-carrier interference. For example, for resources-1 to resource-4 in Figure 7, the number of continuous frequency domain units mapped to resource-1 is the smallest, and the inter-carrier interference is the largest; the number of continuous frequency domain units mapped to resource-4 is the largest, and the inter-carrier interference is the smallest.

In this embodiment, the first perception symbol sequence is mapped on the frequency domain unit of the N ₁ resource blocks using an interleaved mapping method, which can ensure that the PAPR of the above-mentioned first perception symbol sequence is close to 0dB. The second perception symbol is mapped on the frequency domain unit of the N ₁ resource blocks using a local mapping method. By controlling the number of mapped continuous frequency domain units, the PAPR of the second perception symbol can be minimized, and then the PAPR of the perception signal can be minimized.

Optionally, a perception symbol sequence of the first perception signal in the frequency domain is determined according to the first perception symbol sequence and the second perception symbol sequence;

The perception symbol sequence of the first perception signal in the time domain is obtained by performing an inverse discrete Fourier transform of length N on the perception symbol sequence of the first perception signal in the frequency domain, where N is the number of frequency domain units of the first transmission resource.

In this embodiment, the terminal may first determine a perception symbol sequence of the first perception signal in the frequency domain according to the first perception symbol sequence and the second perception symbol sequence, and then perform an inverse discrete Fourier transform of length N on the perception symbol sequence of the first perception signal in the frequency domain to obtain a perception symbol sequence of the first perception signal in the time domain, and then send the perception symbol sequence of the first perception signal in the time domain. That is, in this embodiment, after performing resource mapping of perception symbols in the frequency domain, the perception symbols are converted into perception symbols in the time domain, which is more convenient for controlling PAPR.

Optionally, the perceived symbol sequence of the first perceived signal in the frequency domain includes products of each perceived symbol of the first perceived symbol sequence and each perceived symbol of the second perceived symbol sequence.

For example, the first perceptual symbol sequence includes and The second perceptual symbol sequence includes and Then the perceptual symbol sequence of the first perceptual signal in the frequency domain may include:

Optionally, the interval between two adjacent resource blocks in the N ₁ resource blocks is K frequency domain units;

The first perceptual symbol of the perceptual symbol sequence of the first perceptual signal in the frequency domain is the product of the second perceptual symbol of the first perceptual symbol sequence and the third perceptual symbol of the second perceptual symbol sequence;

The index k of the frequency domain unit of the first perceptual symbol mapping, the index _k1 of the second perceptual symbol, and the index _k2 of the third perceptual symbol satisfy the following relationship: k=K* _k1 + _k2 , _k1 is an integer greater than or equal to 0 and less than _N1 , and _k2 is an integer greater than or equal to 0 and less than _L1 .

Exemplarily, if the OFDM symbol length N is 16 subcarriers, the resource block length L is 3 subcarriers, and _L1 is equal to L, the interval K between resource blocks is 8 subcarriers, and the number of resource blocks _N1 is 2.

For simplicity, in this example, it is assumed that the perception symbol X _m,k on the kth subcarrier is independent of the OFDM symbol index m, that is, it can be simplified to X _m,l =X _l ,

In this example, the mapping method on the subcarrier is to _determine the subcarrier index k by the index _k1 of the perceptual symbol of the first perceptual symbol sequence and the index k2 of the perceptual symbol of the second perceptual symbol sequence, that is, k= _Kk1 + _k2 , where _k1 =0,1 and _k2 =0,1,2.

As shown in FIG8 , in the 0th resource block, the perceptual symbols of the first perceptual symbol sequence are and the perceptual symbols of the second perceptual symbol sequence The products are generated separately in, is mapped on the 0th subcarrier, is mapped on the first subcarrier, It is mapped on the second subcarrier.

Similarly, in the first resource block, the perceptual symbol of the first perceptual symbol sequence is and the perceptual symbols of the second perceptual symbol sequence The products are generated separately in, is mapped on the 8th subcarrier, is mapped on the 9th subcarrier, It is mapped on the 10th subcarrier.

Optionally, the perception symbol sequence of the first perception signal in the time domain is determined according to a fifth perception symbol sequence and a sixth perception symbol sequence;

The fifth perception symbol sequence is obtained by performing an inverse discrete Fourier transform of length N on the first perception symbol sequence, and the sixth perception symbol sequence is obtained by performing an inverse discrete Fourier transform of length N on the second perception symbol sequence, where N is the number of frequency domain units of the first transmission resource.

In this embodiment, the terminal first performs an inverse discrete Fourier transform with a length of N on the first perception symbol sequence to obtain a fifth perception symbol sequence in the time domain, and performs an inverse discrete Fourier transform with a length of N on the second perception symbol sequence to obtain a sixth perception symbol sequence in the time domain, and then determines the perception symbol sequence of the first perception signal in the time domain according to the fifth perception symbol sequence and the sixth perception symbol sequence. That is, in this embodiment, the perception symbol sequence is first converted into perception symbols in the time domain, and then resource mapping is performed on the perception symbols in the time domain, which is relatively simple to implement.

Optionally, the perceived symbol sequence of the first perceived signal in the time domain includes the product of perceived symbols with the same index between the fifth perceived symbol sequence and the sixth perceived symbol sequence.

Exemplarily, if N is equal to 16, the perceptual symbols of the fifth perceptual symbol sequence are The perception symbols of the fifth perception symbol sequence are Then the perception symbol sequence of the first perception signal in the time domain includes the perception symbol Among them, n=0,1,…,15.

Optionally, the fourth perception symbol of the perception symbol sequence of the first perception signal in the time domain is a product of the fifth perception symbol of the fifth perception symbol sequence and the sixth perception symbol of the sixth perception symbol sequence;

The index of the time domain unit mapped to the fourth perceptual symbol is the same as the index of the fifth perceptual symbol, or the index of the time domain unit mapped to the fourth perceptual symbol is the same as the index of the sixth perceptual symbol.

In this embodiment, the above-mentioned time domain unit may include but is not limited to at least one OFDM sample (i.e., OFDM Sample).

Exemplarily, if the OFDM symbol length N is 16 subcarriers, the resource block length L is 3 subcarriers, and _L1 is equal to L, the interval K between resource blocks is 8 subcarriers, and the number of resource blocks _N1 is 2.

For simplicity, in this example, assume that the perceived symbol on the nth OFDM sample is It has nothing to do with the OFDM symbol index m, that is, it can be simplified to

As shown in FIG9 , the first perceptual symbol is transformed into a perceptual symbol by an IDFT having a length of 16. The fifth perceptual symbol series The perceptual symbol of the first perceptual symbol is transformed by an IDFT of length 16 The sixth perceptual symbol series

The perception symbols of the fifth perception symbol series and the perception symbols of the sixth perception symbol series are multiplied to synthesize the perception symbols of the first perception signal in the time domain. Where n = 0, 1, ..., 15. Where The time domain signal is taken as the 0th OFDM sample signal, The time domain signal of is taken as the first OFDM sample signal, and so on. The time domain signal of the first perception signal is used as the 15th OFDM sample signal. Then, the terminal can send out the perception symbol sequence of the first perception signal in the time domain after filtering the signal.

Optionally, the method further includes:

The terminal receives first indication information from a network side device, where the first indication information is used to indicate at least one of the following: the first perception symbol sequence is generated in a first manner, and the second perception symbol sequence is generated in a second manner;

The first method includes a generation method based on discrete Fourier transform or a generation method based on ZC sequence, and the second method includes a generation method based on discrete Fourier transform or a generation method based on ZC sequence.

In this embodiment, the network side device may indicate the generation method of at least one of the first perception symbol sequence and the second perception symbol sequence. Among them, the generation method based on discrete Fourier transform, that is, performing discrete Fourier transform on the perception symbol sequence in the time domain to generate the perception symbol sequence in the frequency domain, and the generation method based on ZC sequence, that is, generating the perception symbol sequence based on the ZC sequence. Exemplarily, the first indication information can be received from the network side device through Layer 1 (Layer 1, L1) signaling, or Media Access Control Control Element (Media Access Control Control Element, MAC CE) signaling, or Radio Resource Control (Radio Resource Control, RRC) signaling.

In some optional embodiments, different combinations of the generation methods of the first perceptual symbol sequence and the second perceptual symbol sequence may be set, and then the network side device may indicate one combination, that is, the first indication information may indicate a combination of the generation methods of the first perceptual symbol sequence and the second perceptual symbol sequence.

For example, Table 3 shows the first perceptual symbol sequence and the second perceptual symbol sequence Different combinations of generation methods, where DFT represents a generation method based on discrete Fourier transform, and ZC represents a generation method based on a ZC sequence.

Table 3

Optionally, the first transmission resource is a periodic resource in the time domain, and within each time domain period of the first transmission resource, the difference between the maximum number of frequency domain units and the minimum number of frequency domain units occupied by the first perception signal in the frequency domain of the first transmission resource is configured to be minimized.

Exemplarily, the perceptual signal resources on the OFDM frequency band are equally extended in units of continuous frequency domain units. Therefore, the network side device can shift the continuous frequency domain units on each OFDM frequency band according to the resource allocation rate of each OFDM frequency band in the same time domain period, so as to minimize the difference between the maximum number of frequency domain units and the minimum number of frequency domain units occupied by the perceptual channel in the frequency domain. For example, as shown in FIG10, the time domain period of the perceptual signal resources is 4 OFDM symbols, wherein the perceptual signal resource allocation rate of the first OFDM symbol and the third OFDM symbol in the time domain period is 1/2, and the perceptual signal resource allocation rate of the second OFDM symbol and the fourth OFDM symbol is 1/3. Resources with different perceptual signal resource allocation rates are intertwined in the time domain. In a time domain period, the maximum number of frequency domain units occupied by the perceptual channel in the frequency domain is 2, and the minimum number of frequency domain units occupied by the perceptual channel in the frequency domain is 1, and the difference between the two is 1.

This embodiment minimizes the difference between the maximum number of frequency domain units and the minimum number of frequency domain units occupied by the perception signal in the frequency domain within the same time domain period, so that the perception signal can be evenly mapped to all frequency domain units (for example, subcarriers) in each time domain period, which helps to improve the perception performance.

It should be noted that the allocated subcarrier resources are different according to different perception requirements. The subcarrier resource allocation rate in the frequency domain is determined according to the maximum range of the perception target. As shown in Figure 7, the perception signal resource allocation rate is 1/2, that is, the perception signal will occupy half of the entire OFDM symbol resource. However, the mapping method of the subcarriers can be different for the same resource allocation rate, for example, as shown in resource-1 to resource-4 in Figure 7.

In some optional embodiments, since the perception signal resources are equally expanded in units of continuous frequency domain units on the OFDM frequency band, the SC-FDMA modulation method can effectively reduce PAPR, thereby improving the power amplifier efficiency on the UE side and expanding the perception range of the uplink perception signal.

The following is an explanation of the simulation results of the PAPR of the sensing signal under different sensing signal modulation modes:

Exemplarily, the simulation conditions are shown in Table 4:

Table 4 PAPR simulation conditions of perceived signals.

In the simulation PAPR performance evaluation, in order to compare the performance of the perception signal modulation method provided in the embodiment of the present application and the OFDM modulation method provided in the related art, the following different modulation methods are considered:

The DFT-based modulation method provided in this application (i.e. Proposal with DFT);

The ZC-based modulation method provided in this application (i.e. Proposal with ZC);

The traditional SC-FDMA method based on DFT (i.e. Cross-Block DFT), in which the DFT operation is performed on the entire time-domain perception symbol, that is, the DFT length is N ₁ ×L＝84;

Based on the direct mapping method of the traditional ZC sequence on the OFDM subcarrier (i.e. Cross-Block ZC), in this method, one ZC sequence corresponds to one OFDM symbol, that is, using the long ZC symbol, the ZC symbol length is N ₁ ×L＝84;

The traditional SC-FDMA method based on DFT (i.e., Each-Block DFT), in which the DFT operation is performed on each time-domain continuous perception symbol, that is, the DFT length is L = 12;

Based on the traditional ZC sequence direct mapping method on OFDM subcarriers (i.e., Each-Block ZC), in this method, the ZC sequence corresponds to each time-domain continuous perception symbol, that is, using short ZC symbols, the ZC symbol length is L=12;

Based on the traditional OFDM modulation method (ie OFDM).

Among them, Figure 11 shows the comparison of the PAPR performance of the perceived signal for different OFDM modulation modes. Through the comparison of the PAPR performance of the perceived signal, the following conclusions can be drawn:

The PARP performance of the perception symbols generated by the DFT-based modulation method provided by the present application is the best, and can reduce the PARP by more than 2dB compared with the traditional DFT-based SC-FDMA method;

The overall performance of PARP based on ZC sequence-generated perceptual symbols is not as good as that of PARP based on DFT-generated perceptual symbols.

It is worth noting that the PAPR generated by different ZC sequence indexes q is different. A small part of ZC sequence indexes q can generate a relatively low PAPR (as shown by point P in Figure 11). Therefore, in practical applications, if the ZC sequence is used as If you want to perceive symbols, you can It is very important to select a suitable ZC sequence index q in advance based on the perceived symbol length.

Please refer to FIG. 12, which is a flowchart of a method for transmitting a perception signal provided in an embodiment of the present application. The method can be executed by a network side device, as shown in FIG. 12, and includes the following steps:

Step 1201: The network side device receives a first perception signal;

The first perception signal is mapped on a first transmission resource, the first transmission resource includes _N1 resource blocks, each of the _N1 resource blocks includes L frequency domain units, and the _N1 resource blocks are equally spaced in the frequency domain, and _N1 and L are both positive integers;

The first perception signal is determined according to a first perception symbol sequence and a second perception symbol sequence, the length of the first perception symbol sequence is N ₁ , the length of the second perception symbol sequence is L ₁ , L ₁ is the number of frequency domain units in the L frequency domain units used to transmit the perception signal, and the L ₁ frequency domain units used to transmit the perception signal are equally spaced in the frequency domain, and L ₁ is an integer greater than or equal to 1 and less than or equal to L.

Optionally, both the first perception symbol sequence and the second perception symbol sequence are perception symbol sequences in the frequency domain;

The first perceptual symbol sequence is generated according to a first ZC sequence, the length of the first ZC sequence is N ₁ , or the first perceptual symbol sequence is obtained by performing a discrete Fourier transform of a length of N ₁ on a third perceptual symbol sequence;

The second perceptual symbol sequence is generated according to a second ZC sequence, the length of the second ZC sequence is L ₁ , or the second perceptual symbol sequence is obtained by performing a discrete Fourier transform of a length of L ₁ on a fourth perceptual symbol sequence;

The third perceptual symbol sequence and the fourth perceptual symbol sequence are both perceptual symbol sequences in the time domain.

Optionally, the amplitudes of the respective perceptual symbols in the third perceptual symbol sequence are all the same, and the amplitudes of the respective perceptual symbols in the fourth perceptual symbol sequence are all the same.

Optionally, each perceptual symbol of the fourth perceptual symbol sequence is the same.

Optionally, the second perception symbol sequence is a perception symbol sequence obtained by performing a discrete Fourier transform of a length of _L1 on the fourth perception symbol sequence based on a first phase offset value, and a value range of the first phase offset value is between 0 and 1.

Optionally, the index of the first ZC sequence is the same as the index of the second ZC sequence, or the index of the first ZC sequence is different from the index of the second ZC sequence.

Optionally, the index of the first ZC sequence is determined according to the length of the first perceptual symbol sequence; or,

The index of the second ZC sequence is determined according to the length of the second perceptual symbol sequence.

Optionally, the first perception symbol sequence is mapped on the frequency domain units of the N ₁ resource blocks by using an interleaved mapping method, and the second perception symbol is mapped on the frequency domain units of the N ₁ resource blocks by using a local mapping method.

Optionally, a perception symbol sequence of the first perception signal in the frequency domain is determined according to the first perception symbol sequence and the second perception symbol sequence;

The perception symbol sequence of the first perception signal in the time domain is obtained by performing an inverse discrete Fourier transform of length N on the perception symbol sequence of the first perception signal in the frequency domain, where N is the number of frequency domain units of the first transmission resource.

Optionally, the perceived symbol sequence of the first perceived signal in the frequency domain includes products of each perceived symbol of the first perceived symbol sequence and each perceived symbol of the second perceived symbol sequence.

Optionally, the interval between two adjacent resource blocks in the N ₁ resource blocks is K frequency domain units;

The first perceptual symbol of the perceptual symbol sequence of the first perceptual signal in the frequency domain is a product of the second perceptual symbol of the first perceptual symbol sequence and the third perceptual symbol of the second perceptual symbol sequence;

The index k of the frequency domain unit of the first perceptual symbol mapping, the index _k1 of the second perceptual symbol, and the index _k2 of the third perceptual symbol satisfy the following relationship: k=K* _k1 + _k2 , _k1 is an integer greater than or equal to 0 and less than _N1 , and _k2 is an integer greater than or equal to 0 and less than _L1 .

Optionally, the perception symbol sequence of the first perception signal in the time domain is determined according to a fifth perception symbol sequence and a sixth perception symbol sequence;

The fifth perception symbol sequence is obtained by performing an inverse discrete Fourier transform of length N on the first perception symbol sequence, and the sixth perception symbol sequence is obtained by performing an inverse discrete Fourier transform of length N on the second perception symbol sequence. The result is obtained by Fourier transform, where N is the number of frequency domain units of the first transmission resource.

Optionally, the perceived symbol sequence of the first perceived signal in the time domain includes the product of perceived symbols with the same index between the fifth perceived symbol sequence and the sixth perceived symbol sequence.

Optionally, the fourth perception symbol of the perception symbol sequence of the first perception signal in the time domain is a product of the fifth perception symbol of the fifth perception symbol sequence and the sixth perception symbol of the sixth perception symbol sequence;

The index of the time domain unit mapped to the fourth perceptual symbol is the same as the index of the fifth perceptual symbol, or the index of the time domain unit mapped to the fourth perceptual symbol is the same as the index of the sixth perceptual symbol.

Optionally, the method further includes:

The network side device sends first indication information to the terminal, where the first indication information is used to indicate at least one of the following: the first perception symbol sequence is generated in a first manner, and the second perception symbol sequence is generated in a second manner;

The first method includes a generation method based on discrete Fourier transform or a generation method based on ZC sequence, and the second method includes a generation method based on discrete Fourier transform or a generation method based on ZC sequence.

Optionally, the first transmission resource is a periodic resource in the time domain, and within each time domain period of the first transmission resource, the difference between the maximum number of frequency domain units and the minimum number of frequency domain units occupied by the first perception signal in the frequency domain of the first transmission resource is configured to be minimized.

It should be noted that the implementation method of this embodiment can refer to the relevant description of the embodiment shown in FIG3 , and will not be described in detail here.

It should be noted that the perception signal transmission method provided in the embodiment of the present application can be executed by a perception signal transmission device, or a control module in the perception signal transmission device for executing the perception signal transmission method. In the embodiment of the present application, the perception signal transmission device provided in the embodiment of the present application is described by taking the perception signal transmission method executed by the perception signal transmission device as an example.

Please refer to FIG. 13 , which is a structural diagram of a perception signal transmission device provided in an embodiment of the present application. As shown in FIG. 13 , the perception signal transmission device 1300 includes:

A first sending module 1301, configured to send a first perception signal;

The first perception signal is mapped on a first transmission resource, the first transmission resource includes _N1 resource blocks, each of the _N1 resource blocks includes L frequency domain units, and the _N1 resource blocks are equally spaced in the frequency domain, and _N1 and L are both positive integers;

The first perception signal is determined according to a first perception symbol sequence and a second perception symbol sequence, the length of the first perception symbol sequence is N ₁ , the length of the second perception symbol sequence is L ₁ , L ₁ is the number of frequency domain units in the L frequency domain units used to transmit the perception signal, and the L ₁ frequency domain units used to transmit the perception signal are equally spaced in the frequency domain, and L ₁ is an integer greater than or equal to 1 and less than or equal to L.

Optionally, both the first perception symbol sequence and the second perception symbol sequence are perception symbol sequences in the frequency domain;

The first perceptual symbol sequence is generated according to a first ZC sequence, the length of the first ZC sequence is N ₁ , or the first perceptual symbol sequence is obtained by performing a discrete Fourier transform of a length of N ₁ on a third perceptual symbol sequence;

The second perceptual symbol sequence is generated according to a second ZC sequence, the length of the second ZC sequence is L ₁ , or the second perceptual symbol sequence is obtained by performing a discrete Fourier transform of a length of L ₁ on a fourth perceptual symbol sequence;

The third perceptual symbol sequence and the fourth perceptual symbol sequence are both perceptual symbol sequences in the time domain.

Optionally, the amplitudes of the respective perceptual symbols in the third perceptual symbol sequence are all the same, and the amplitudes of the respective perceptual symbols in the fourth perceptual symbol sequence are all the same.

Optionally, each perceptual symbol of the fourth perceptual symbol sequence is the same.

Optionally, the second perception symbol sequence is a perception symbol sequence obtained by performing a discrete Fourier transform of a length of _L1 on the fourth perception symbol sequence based on a first phase offset value, and a value range of the first phase offset value is between 0 and 1.

Optionally, the index of the first ZC sequence is the same as the index of the second ZC sequence, or the index of the first ZC sequence is different from the index of the second ZC sequence.

Optionally, the index of the first ZC sequence is determined according to the length of the first perceptual symbol sequence; or,

The index of the second ZC sequence is determined according to the length of the second perceptual symbol sequence.

Optionally, the first perception symbol sequence is mapped on the frequency domain units of the N ₁ resource blocks by using an interleaved mapping method, and the second perception symbol is mapped on the frequency domain units of the N ₁ resource blocks by using a local mapping method.

Optionally, a perception symbol sequence of the first perception signal in the frequency domain is determined according to the first perception symbol sequence and the second perception symbol sequence;

The perception symbol sequence of the first perception signal in the time domain is obtained by performing an inverse discrete Fourier transform of length N on the perception symbol sequence of the first perception signal in the frequency domain, where N is the number of frequency domain units of the first transmission resource.

Optionally, the perceived symbol sequence of the first perceived signal in the frequency domain includes products of each perceived symbol of the first perceived symbol sequence and each perceived symbol of the second perceived symbol sequence.

Optionally, the interval between two adjacent resource blocks in the N ₁ resource blocks is K frequency domain units;

The first perceptual symbol of the perceptual symbol sequence of the first perceptual signal in the frequency domain is a product of the second perceptual symbol of the first perceptual symbol sequence and the third perceptual symbol of the second perceptual symbol sequence;

The index k of the frequency domain unit of the first perceptual symbol mapping, the index _k1 of the second perceptual symbol, and the index _k2 of the third perceptual symbol satisfy the following relationship: k=K* _k1 + _k2 , _k1 is an integer greater than or equal to 0 and less than _N1 , and _k2 is an integer greater than or equal to 0 and less than _L1 .

Optionally, the perception symbol sequence of the first perception signal in the time domain is determined according to a fifth perception symbol sequence and a sixth perception symbol sequence;

The fifth perception symbol sequence is obtained by performing an inverse discrete Fourier transform of length N on the first perception symbol sequence, and the sixth perception symbol sequence is obtained by performing an inverse discrete Fourier transform of length N on the second perception symbol sequence, where N is the number of frequency domain units of the first transmission resource.

Optionally, the perceived symbol sequence of the first perceived signal in the time domain includes the product of perceived symbols with the same index between the fifth perceived symbol sequence and the sixth perceived symbol sequence.

Optionally, the fourth perception symbol of the perception symbol sequence of the first perception signal in the time domain is the fifth perception symbol. a product of a fifth perceptual symbol of the symbol sequence and a sixth perceptual symbol of the sixth perceptual symbol sequence;

The index of the time domain unit mapped to the fourth perceptual symbol is the same as the index of the fifth perceptual symbol, or the index of the time domain unit mapped to the fourth perceptual symbol is the same as the index of the sixth perceptual symbol.

Optionally, the device further comprises:

A second receiving module is used to receive first indication information from a network side device, where the first indication information is used to indicate at least one of the following: the first perception symbol sequence is generated in a first manner, and the second perception symbol sequence is generated in a second manner;

The first method includes a generation method based on discrete Fourier transform or a generation method based on ZC sequence, and the second method includes a generation method based on discrete Fourier transform or a generation method based on ZC sequence.

Optionally, the first transmission resource is a periodic resource in the time domain, and within each time domain period of the first transmission resource, the difference between the maximum number of frequency domain units and the minimum number of frequency domain units occupied by the first perception signal in the frequency domain of the first transmission resource is configured to be minimized.

The perception signal transmission device in the embodiment of the present application can be an electronic device, such as an electronic device with an operating system, or a component in an electronic device, such as an integrated circuit or a chip. The electronic device can be a terminal, or it can be other devices other than a terminal. Exemplarily, the terminal can include but is not limited to the types of terminals 11 listed above, and other devices can be servers, network attached storage (NAS), etc., which are not specifically limited in the embodiment of the present application.

The perception signal transmission device provided in the embodiment of the present application can implement each process implemented by the method embodiment of Figure 3 and achieve the same technical effect. To avoid repetition, it will not be repeated here.

Please refer to FIG. 14 , which is a structural diagram of a perception signal transmission device provided in an embodiment of the present application. As shown in FIG. 14 , the perception signal transmission device 1400 includes:

The first receiving module 1401 is used to receive a first perception signal;

The first perception signal is mapped on a first transmission resource, the first transmission resource includes _N1 resource blocks, each of the _N1 resource blocks includes L frequency domain units, and the _N1 resource blocks are equally spaced in the frequency domain, and _N1 and L are both positive integers;

The first perception signal is determined according to a first perception symbol sequence and a second perception symbol sequence, the length of the first perception symbol sequence is N ₁ , the length of the second perception symbol sequence is L ₁ , L ₁ is the number of frequency domain units in the L frequency domain units used to transmit the perception signal, and the L ₁ frequency domain units used to transmit the perception signal are equally spaced in the frequency domain, and L ₁ is an integer greater than or equal to 1 and less than or equal to L.

Optionally, both the first perception symbol sequence and the second perception symbol sequence are perception symbol sequences in the frequency domain;

The first perceptual symbol sequence is generated according to a first ZC sequence, the length of the first ZC sequence is N ₁ , or the first perceptual symbol sequence is obtained by performing a discrete Fourier transform of a length of N ₁ on a third perceptual symbol sequence;

The second perceptual symbol sequence is generated according to a second ZC sequence, the length of the second ZC sequence is L ₁ , or the second perceptual symbol sequence is obtained by performing a discrete Fourier transform of a length of L ₁ on a fourth perceptual symbol sequence;

The third perceptual symbol sequence and the fourth perceptual symbol sequence are both perceptual symbol sequences in the time domain.

Optionally, the amplitudes of the respective perceptual symbols in the third perceptual symbol sequence are all the same, and the amplitudes of the respective perceptual symbols in the fourth perceptual symbol sequence are all the same.

Optionally, each perceptual symbol of the fourth perceptual symbol sequence is the same.

Optionally, the second perception symbol sequence is a perception symbol sequence obtained by performing a discrete Fourier transform of a length of _L1 on the fourth perception symbol sequence based on a first phase offset value, and a value range of the first phase offset value is between 0 and 1.

Optionally, the index of the first ZC sequence is the same as the index of the second ZC sequence, or the index of the first ZC sequence is different from the index of the second ZC sequence.

Optionally, the index of the first ZC sequence is determined according to the length of the first perceptual symbol sequence; or,

The index of the second ZC sequence is determined according to the length of the second perceptual symbol sequence.

Optionally, the first perception symbol sequence is mapped on the frequency domain units of the N ₁ resource blocks by using an interleaved mapping method, and the second perception symbol is mapped on the frequency domain units of the N ₁ resource blocks by using a local mapping method.

Optionally, a perception symbol sequence of the first perception signal in the frequency domain is determined according to the first perception symbol sequence and the second perception symbol sequence;

The perception symbol sequence of the first perception signal in the time domain is obtained by performing an inverse discrete Fourier transform of length N on the perception symbol sequence of the first perception signal in the frequency domain, where N is the number of frequency domain units of the first transmission resource.

Optionally, the perceived symbol sequence of the first perceived signal in the frequency domain includes products of each perceived symbol of the first perceived symbol sequence and each perceived symbol of the second perceived symbol sequence.

Optionally, the interval between two adjacent resource blocks in the N ₁ resource blocks is K frequency domain units;

The first perceptual symbol of the perceptual symbol sequence of the first perceptual signal in the frequency domain is the product of the second perceptual symbol of the first perceptual symbol sequence and the third perceptual symbol of the second perceptual symbol sequence;

The index k of the frequency domain unit of the first perceptual symbol mapping, the index _k1 of the second perceptual symbol, and the index _k2 of the third perceptual symbol satisfy the following relationship: k=K* _k1 + _k2 , _k1 is an integer greater than or equal to 0 and less than _N1 , and _k2 is an integer greater than or equal to 0 and less than _L1 .

Optionally, the perception symbol sequence of the first perception signal in the time domain is determined according to a fifth perception symbol sequence and a sixth perception symbol sequence;

The fifth perception symbol sequence is obtained by performing an inverse discrete Fourier transform of length N on the first perception symbol sequence, and the sixth perception symbol sequence is obtained by performing an inverse discrete Fourier transform of length N on the second perception symbol sequence, where N is the number of frequency domain units of the first transmission resource.

Optionally, the perceived symbol sequence of the first perceived signal in the time domain includes the product of perceived symbols with the same index between the fifth perceived symbol sequence and the sixth perceived symbol sequence.

Optionally, the fourth perception symbol of the perception symbol sequence of the first perception signal in the time domain is a product of the fifth perception symbol of the fifth perception symbol sequence and the sixth perception symbol of the sixth perception symbol sequence;

The index of the time domain unit mapped to the fourth perceptual symbol is the same as the index of the fifth perceptual symbol, or The index of the time domain unit mapped to the fourth perceptual symbol is the same as the index of the sixth perceptual symbol.

Optionally, the device further comprises:

A second sending module is used to send first indication information to the terminal, where the first indication information is used to indicate at least one of the following: the first perception symbol sequence is generated in a first manner, and the second perception symbol sequence is generated in a second manner;

The first method includes a generation method based on discrete Fourier transform or a generation method based on ZC sequence, and the second method includes a generation method based on discrete Fourier transform or a generation method based on ZC sequence.

Optionally, the first transmission resource is a periodic resource in the time domain, and within each time domain period of the first transmission resource, the difference between the maximum number of frequency domain units and the minimum number of frequency domain units occupied by the first perception signal in the frequency domain of the first transmission resource is configured to be minimized.

The perception signal transmission device in the embodiment of the present application can be an electronic device, such as an electronic device with an operating system, or a component in an electronic device, such as an integrated circuit or a chip. The electronic device can be a network-side device, or it can be a device other than a network-side device. Exemplarily, the network-side device can include but is not limited to the types of network-side devices 12 listed above, and other devices can be servers, network attached storage (NAS), etc., which are not specifically limited in the embodiment of the present application.

The perception signal transmission device provided in the embodiment of the present application can implement the various processes implemented by the method embodiment of Figure 12 and achieve the same technical effect. To avoid repetition, it will not be repeated here.

Optionally, as shown in FIG15, an embodiment of the present application further provides a communication device 1500, including a processor 1501 and a memory 1502, wherein the memory 1502 stores a program or instruction that can be run on the processor 1501. For example, when the communication device 1500 is a terminal, the program or instruction is executed by the processor 1501 to implement the various steps of the above-mentioned perception signal transmission method embodiment, and can achieve the same technical effect. When the communication device 1500 is a network side device, the program or instruction is executed by the processor 1501 to implement the various steps of the above-mentioned perception signal transmission method embodiment, and can achieve the same technical effect. To avoid repetition, it will not be repeated here.

The embodiment of the present application also provides a terminal, including a processor and a communication interface, wherein the communication interface is used to send a first perception signal; wherein the first perception signal is mapped on a first transmission resource, the first transmission resource includes N ₁ resource blocks, each of the N ₁ resource blocks includes L frequency domain units, and the N ₁ resource blocks are equally spaced in the frequency domain, and N ₁ and L are both positive integers; the first perception signal is determined according to a first perception symbol sequence and a second perception symbol sequence, the length of the first perception symbol sequence is N ₁ , the length of the second perception symbol sequence is L ₁ , L ₁ is the number of frequency domain units in the L frequency domain units used to transmit the perception signal, and the L ₁ frequency domain units used to transmit the perception signal are equally spaced in the frequency domain, and L ₁ is an integer greater than or equal to 1 and less than or equal to L. This terminal embodiment corresponds to the above-mentioned terminal side method embodiment, and each implementation process and implementation method of the above-mentioned method embodiment can be applied to the terminal embodiment, and can achieve the same technical effect. Specifically, Figure 16 is a schematic diagram of the hardware structure of a terminal implementing an embodiment of the present application.

The terminal 1600 includes but is not limited to: a radio frequency unit 1601, a network module 1602, an audio output unit 1603, an input unit 1604, a sensor 1605, a display unit 1606, a user input unit 1607, an interface unit 1608, a storage unit 1610, and a storage unit 1611. At least some components of the memory 1609 and the processor 1610, etc.

Those skilled in the art will appreciate that the terminal 1600 may also include a power source (such as a battery) for supplying power to each component, and the power source may be logically connected to the processor 1610 through a power management system, so as to implement functions such as charging, discharging, and power consumption management through the power management system. The terminal structure shown in FIG16 does not constitute a limitation on the terminal, and the terminal may include more or fewer components than shown in the figure, or combine certain components, or arrange components differently, which will not be described in detail here.

It should be understood that in the embodiment of the present application, the input unit 1604 may include a graphics processing unit (GPU) 16041 and a microphone 16042, and the graphics processor 16041 processes the image data of the static picture or video obtained by the image capture device (such as a camera) in the video capture mode or the image capture mode. The display unit 1606 may include a display panel 16061, and the display panel 16061 may be configured in the form of a liquid crystal display, an organic light emitting diode, etc. The user input unit 1607 includes a touch panel 16071 and at least one of other input devices 16072. The touch panel 16071 is also called a touch screen. The touch panel 16071 may include two parts: a touch detection device and a touch controller. Other input devices 16072 may include, but are not limited to, a physical keyboard, function keys (such as a volume control key, a switch key, etc.), a trackball, a mouse, and a joystick, which will not be repeated here.

In the embodiment of the present application, after receiving downlink data from the network side device, the RF unit 1601 can transmit the data to the processor 1610 for processing; in addition, the RF unit 1601 can send uplink data to the network side device. Generally, the RF unit 1601 includes but is not limited to an antenna, an amplifier, a transceiver, a coupler, a low noise amplifier, a duplexer, etc.

The memory 1609 can be used to store software programs or instructions and various data. The memory 1609 may mainly include a first storage area for storing programs or instructions and a second storage area for storing data, wherein the first storage area may store an operating system, an application program or instruction required for at least one function (such as a sound playback function, an image playback function, etc.), etc. In addition, the memory 1609 may include a volatile memory or a non-volatile memory. Among them, the non-volatile memory may be a read-only memory (ROM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), an electrically erasable programmable read-only memory (EEPROM), or a flash memory. The volatile memory may be a random access memory (RAM), a static random access memory (SRAM), a dynamic random access memory (DRAM), a synchronous dynamic random access memory (SDRAM), a double data rate synchronous dynamic random access memory (DDRSDRAM), an enhanced synchronous dynamic random access memory (ESDRAM), a synchronous link dynamic random access memory (SLDRAM) and a direct memory bus random access memory (DRRAM). The memory 1609 in the embodiment of the present application includes but is not limited to these and any other suitable types of memory.

The processor 1610 may include one or more processing units; optionally, the processor 1610 integrates an application processor and a modem processor, wherein the application processor mainly processes operations related to an operating system, a user interface, and application programs, and the modem processor mainly processes wireless communication signals, such as a baseband processor. It is understandable that the modem processor may not be integrated into the processor 1610.

Among them, the radio frequency unit 1601 is used to send a first perception signal; wherein the first perception signal is mapped on a first transmission resource, the first transmission resource includes _N1 resource blocks, each of the _N1 resource blocks includes L frequency domain units, and the _N1 resource blocks are equally spaced in the frequency domain, and _N1 and L are both positive integers; the first perception signal is determined according to a first perception symbol sequence and a second perception symbol sequence, the length of the first perception symbol sequence is _N1 , the length of the second perception symbol sequence is _L1 , _L1 is the number of frequency domain units in the L frequency domain units used to transmit the perception signal, and the _L1 frequency domain units used to transmit the perception signal are equally spaced in the frequency domain, and _L1 is an integer greater than or equal to 1 and less than or equal to L.

It can be understood that the implementation process of each implementation method mentioned in this embodiment can refer to the relevant description of the aforementioned method embodiment, and achieve the same or corresponding technical effect. To avoid repetition, it will not be repeated here.

The embodiment of the present application also provides a network side device, including a processor and a communication interface, the communication interface is used to receive a first perception signal; wherein the first perception signal is mapped on a first transmission resource, the first transmission resource includes N ₁ resource blocks, each of the N ₁ resource blocks includes L frequency domain units, and the N ₁ resource blocks are equally spaced in the frequency domain, and N ₁ and L are both positive integers; the first perception signal is determined according to a first perception symbol sequence and a second perception symbol sequence, the length of the first perception symbol sequence is N ₁ , the length of the second perception symbol sequence is L ₁ , L ₁ is the number of frequency domain units in the L frequency domain units used to transmit the perception signal, and the L ₁ frequency domain units used to transmit the perception signal are equally spaced in the frequency domain, and L ₁ is an integer greater than or equal to 1 and less than or equal to L. This network side device embodiment corresponds to the above network side device method embodiment, and each implementation process and implementation method of the above method embodiment can be applied to this network side device embodiment, and can achieve the same technical effect.

Specifically, the embodiment of the present application also provides a network side device. As shown in Figure 17, the network side device 1700 includes: an antenna 1701, a radio frequency device 1702, a baseband device 1703, a processor 1704 and a memory 1705. The antenna 1701 is connected to the radio frequency device 1702. In the uplink direction, the radio frequency device 1702 receives information through the antenna 1701 and sends the received information to the baseband device 1703 for processing. In the downlink direction, the baseband device 1703 processes the information to be sent and sends it to the radio frequency device 1702. The radio frequency device 1702 processes the received information and sends it out through the antenna 1701.

The method executed by the network-side device in the above embodiment may be implemented in the baseband device 1703, which includes a baseband processor.

The baseband device 1703 may include, for example, at least one baseband board, on which multiple chips are arranged, as shown in Figure 17, one of which is, for example, a baseband processor, which is connected to the memory 1705 through a bus interface to call the program in the memory 1705 and execute the network device operations shown in the above method embodiment.

The network side device may also include a network interface 1706, which is, for example, a Common Public Radio Interface (CPRI).

Specifically, the network side device 1700 of the embodiment of the present application also includes: instructions or programs stored in the memory 1705 and executable on the processor 1704. The processor 1704 calls the instructions or programs in the memory 1705 to execute the methods executed by the modules shown in Figure 14 and achieve the same technical effect. To avoid repetition, it will not be repeated here.

The present application also provides a readable storage medium, wherein a program or instruction is stored on the readable storage medium. When the program or instruction is executed by the processor, the various processes of the above-mentioned perception signal transmission method embodiment are implemented and the same technical effect can be achieved. To avoid repetition, it will not be repeated here.

The processor is the processor in the terminal described in the above embodiment. The readable storage medium includes a computer readable storage medium, such as a computer read-only memory ROM, a random access memory RAM, a magnetic disk or an optical disk. In some examples, the readable storage medium may be a non-transient readable storage medium.

An embodiment of the present application further provides a chip, which includes a processor and a communication interface, wherein the communication interface is coupled to the processor, and the processor is used to run programs or instructions to implement the various processes of the above-mentioned perception signal transmission method embodiment, and can achieve the same technical effect. To avoid repetition, it will not be repeated here.

It should be understood that the chip mentioned in the embodiments of the present application can also be called a system-level chip, a system chip, a chip system or a system-on-chip chip, etc.

An embodiment of the present application further provides a computer program/program product, which is stored in a storage medium. The computer program/program product is executed by at least one processor to implement the various processes of the above-mentioned perception signal transmission method embodiment and can achieve the same technical effect. To avoid repetition, it will not be repeated here.

An embodiment of the present application also provides a perception signal transmission system, including: a terminal and a network side device, wherein the terminal is used to execute the various processes as shown in Figure 3 and the various method embodiments described above, and the network side device is used to execute the various processes as shown in Figure 12 and the various method embodiments described above, and can achieve the same technical effect. To avoid repetition, it will not be repeated here.

It should be noted that, in this article, the terms "comprise", "include" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "comprises one..." does not exclude the presence of other identical elements in the process, method, article or device including the element. In addition, it should be pointed out that the scope of the method and device in the embodiment of the present application is not limited to performing functions in the order shown or discussed, and may also include performing functions in a substantially simultaneous manner or in reverse order according to the functions involved, for example, the described method may be performed in an order different from that described, and various steps may also be added, omitted or combined. In addition, the features described with reference to certain examples may be combined in other examples.

Through the description of the above implementation methods, those skilled in the art can clearly understand that the above-mentioned embodiment methods can be implemented by means of a computer software product plus a necessary general hardware platform, and of course, can also be implemented by hardware. The computer software product is stored in a storage medium (such as ROM, RAM, disk, CD, etc.), including several instructions to enable a terminal or a network-side device to execute the methods described in each embodiment of the present application.

The embodiments of the present application are described above in conjunction with the accompanying drawings, but the present application is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of the present application, ordinary technicians in this field can also make many forms of implementation methods without departing from the purpose of the present application and the scope of protection of the claims, and these implementation methods are all within the protection of the present application.

Claims (36)

A method for transmitting a sensing signal, comprising: The terminal sends a first perception signal; The first perception signal is mapped on a first transmission resource, the first transmission resource includes _N1 resource blocks, each of the _N1 resource blocks includes L frequency domain units, and the _N1 resource blocks are equally spaced in the frequency domain, and _N1 and L are both positive integers; The first perception signal is determined according to a first perception symbol sequence and a second perception symbol sequence, the length of the first perception symbol sequence is N ₁ , the length of the second perception symbol sequence is L ₁ , L ₁ is the number of frequency domain units in the L frequency domain units used to transmit the perception signal, and the L ₁ frequency domain units used to transmit the perception signal are equally spaced in the frequency domain, and L ₁ is an integer greater than or equal to 1 and less than or equal to L. The method according to claim 1, wherein the first perceptual symbol sequence and the second perceptual symbol sequence are both perceptual symbol sequences in the frequency domain; The first perceptual symbol sequence is generated according to a first ZC sequence, the length of the first ZC sequence is N ₁ , or the first perceptual symbol sequence is obtained by performing a discrete Fourier transform of a length of N ₁ on a third perceptual symbol sequence; The second perceptual symbol sequence is generated according to a second ZC sequence, the length of the second ZC sequence is L ₁ , or the second perceptual symbol sequence is obtained by performing a discrete Fourier transform of a length of L ₁ on a fourth perceptual symbol sequence; The third perceptual symbol sequence and the fourth perceptual symbol sequence are both perceptual symbol sequences in the time domain. The method according to claim 2, wherein the amplitudes of the respective perceptual symbols in the third perceptual symbol sequence are the same, and the amplitudes of the respective perceptual symbols in the fourth perceptual symbol sequence are the same. The method according to claim 3, wherein each perceptual symbol of the fourth perceptual symbol sequence is the same. The method according to claim 4, wherein the second perceptual symbol sequence is a perceptual symbol sequence obtained by performing a discrete Fourier transform of a length of L ₁ on the fourth perceptual symbol sequence based on a first phase offset value, and the value range of the first phase offset value is between 0 and 1. The method according to claim 2, wherein the index of the first ZC sequence is the same as the index of the second ZC sequence, or the index of the first ZC sequence is different from the index of the second ZC sequence. The method according to claim 2, wherein the index of the first ZC sequence is determined according to the length of the first perceptual symbol sequence; or The index of the second ZC sequence is determined according to the length of the second perceptual symbol sequence. The method according to any one of claims 2 to 7, wherein the first perception symbol sequence is mapped on the frequency domain unit of the N ₁ resource blocks using an interleaved mapping method, and the second perception symbol is mapped on the frequency domain unit of the N ₁ resource blocks using a local mapping method. The method according to any one of claims 2 to 7, wherein the perceptual symbol sequence of the first perceptual signal in the frequency domain is determined according to the first perceptual symbol sequence and the second perceptual symbol sequence; The perceptual symbol sequence of the first perceptual signal in the time domain is obtained by perceiving the first perceptual signal in the frequency domain. The known symbol sequence is obtained by performing an inverse discrete Fourier transform of length N, where N is the number of frequency domain units of the first transmission resource. The method according to claim 9, wherein the perceptual symbol sequence of the first perceptual signal in the frequency domain comprises products of each perceptual symbol of the first perceptual symbol sequence and each perceptual symbol of the second perceptual symbol sequence. The method according to claim 10, wherein the interval between two adjacent resource blocks in the N ₁ resource blocks is K frequency domain units; The first perceptual symbol of the perceptual symbol sequence of the first perceptual signal in the frequency domain is the product of the second perceptual symbol of the first perceptual symbol sequence and the third perceptual symbol of the second perceptual symbol sequence; The index k of the frequency domain unit of the first perceptual symbol mapping, the index _k1 of the second perceptual symbol, and the index _k2 of the third perceptual symbol satisfy the following relationship: k=K* _k1 + _k2 , _k1 is an integer greater than or equal to 0 and less than _N1 , and _k2 is an integer greater than or equal to 0 and less than _L1 . The method according to any one of claims 2 to 7, wherein the perceptual symbol sequence of the first perceptual signal in the time domain is determined according to a fifth perceptual symbol sequence and a sixth perceptual symbol sequence; The fifth perception symbol sequence is obtained by performing an inverse discrete Fourier transform of length N on the first perception symbol sequence, and the sixth perception symbol sequence is obtained by performing an inverse discrete Fourier transform of length N on the second perception symbol sequence, where N is the number of frequency domain units of the first transmission resource. The method according to claim 12, wherein the perceptual symbol sequence of the first perceptual signal in the time domain comprises a product of perceptual symbols with the same index between the fifth perceptual symbol sequence and the sixth perceptual symbol sequence. The method according to claim 13, wherein the fourth perceptual symbol of the perceptual symbol sequence of the first perceptual signal in the time domain is the product of the fifth perceptual symbol of the fifth perceptual symbol sequence and the sixth perceptual symbol of the sixth perceptual symbol sequence; The index of the time domain unit to which the fourth perceptual symbol is mapped is the same as the index of the fifth perceptual symbol, or the index of the time domain unit to which the fourth perceptual symbol is mapped is the same as the index of the sixth perceptual symbol. The method according to any one of claims 2 to 14, further comprising: The terminal receives first indication information from a network side device, where the first indication information is used to indicate at least one of the following: the first perception symbol sequence is generated in a first manner, and the second perception symbol sequence is generated in a second manner; The first method includes a generation method based on discrete Fourier transform or a generation method based on ZC sequence, and the second method includes a generation method based on discrete Fourier transform or a generation method based on ZC sequence. The method according to any one of claims 1 to 14, wherein the first transmission resource is a periodic resource in the time domain, and within each time domain period of the first transmission resource, the difference between the maximum number of frequency domain units and the minimum number of frequency domain units occupied by the first perception signal in the frequency domain of the first transmission resource is configured to be minimized. A method for transmitting a sensing signal, comprising: The network side device receives the first perception signal; The first perception signal is mapped on a first transmission resource, the first transmission resource includes N ₁ resource blocks, each of the N ₁ resource blocks includes L frequency domain units, and the N ₁ resource blocks are spaced apart in frequency domain. The domain is equally spaced, and N ₁ and L are both positive integers; The first perception signal is determined according to a first perception symbol sequence and a second perception symbol sequence, the length of the first perception symbol sequence is N ₁ , the length of the second perception symbol sequence is L ₁ , L ₁ is the number of frequency domain units in the L frequency domain units used to transmit the perception signal, and the L ₁ frequency domain units used to transmit the perception signal are equally spaced in the frequency domain, and L ₁ is an integer greater than or equal to 1 and less than or equal to L. The method according to claim 17, wherein the first perceptual symbol sequence and the second perceptual symbol sequence are both perceptual symbol sequences in the frequency domain; The first perceptual symbol sequence is generated according to a first ZC sequence, the length of the first ZC sequence is N ₁ , or the first perceptual symbol sequence is obtained by performing a discrete Fourier transform of a length of N ₁ on a third perceptual symbol sequence; The second perceptual symbol sequence is generated according to a second ZC sequence, the length of the second ZC sequence is L ₁ , or the second perceptual symbol sequence is obtained by performing a discrete Fourier transform of a length of L ₁ on a fourth perceptual symbol sequence; The third perceptual symbol sequence and the fourth perceptual symbol sequence are both perceptual symbol sequences in the time domain. The method according to claim 18, wherein the amplitudes of the respective perceptual symbols in the third perceptual symbol sequence are the same, and the amplitudes of the respective perceptual symbols in the fourth perceptual symbol sequence are the same. The method according to claim 19, wherein each perceptual symbol of the fourth perceptual symbol sequence is the same. The method according to claim 20, wherein the second perceptual symbol sequence is a perceptual symbol sequence obtained by performing a discrete Fourier transform of a length of _L1 on the fourth perceptual symbol sequence based on a first phase offset value, and the value range of the first phase offset value is between 0 and 1. The method according to claim 18, wherein the index of the first ZC sequence is the same as the index of the second ZC sequence, or the index of the first ZC sequence is different from the index of the second ZC sequence. The method according to claim 18, wherein the index of the first ZC sequence is determined according to the length of the first perceptual symbol sequence; or The index of the second ZC sequence is determined according to the length of the second perceptual symbol sequence. The method according to any one of claims 18 to 23, wherein the first perception symbol sequence is mapped on the frequency domain unit of the _N1 resource blocks using an interleaved mapping method, and the second perception symbol is mapped on the frequency domain unit of the _N1 resource blocks using a local mapping method. The method according to any one of claims 18 to 23, wherein the perceptual symbol sequence of the first perceptual signal in the frequency domain is determined according to the first perceptual symbol sequence and the second perceptual symbol sequence; The perception symbol sequence of the first perception signal in the time domain is obtained by performing an inverse discrete Fourier transform of length N on the perception symbol sequence of the first perception signal in the frequency domain, where N is the number of frequency domain units of the first transmission resource. The method according to claim 25, wherein the perceptual symbol sequence of the first perceptual signal in the frequency domain comprises products of each perceptual symbol of the first perceptual symbol sequence and each perceptual symbol of the second perceptual symbol sequence. The method according to claim 26, wherein the interval between two adjacent resource blocks in the _N1 resource blocks is The interval is K frequency domain units; The first perceptual symbol of the perceptual symbol sequence of the first perceptual signal in the frequency domain is a product of the second perceptual symbol of the first perceptual symbol sequence and the third perceptual symbol of the second perceptual symbol sequence; The index k of the frequency domain unit of the first perceptual symbol mapping, the index _k1 of the second perceptual symbol, and the index _k2 of the third perceptual symbol satisfy the following relationship: k=K* _k1 + _k2 , _k1 is an integer greater than or equal to 0 and less than _N1 , and _k2 is an integer greater than or equal to 0 and less than _L1 . The method according to any one of claims 18 to 23, wherein the perceptual symbol sequence of the first perceptual signal in the time domain is determined according to a fifth perceptual symbol sequence and a sixth perceptual symbol sequence; The fifth perception symbol sequence is obtained by performing an inverse discrete Fourier transform of length N on the first perception symbol sequence, and the sixth perception symbol sequence is obtained by performing an inverse discrete Fourier transform of length N on the second perception symbol sequence, where N is the number of frequency domain units of the first transmission resource. The method according to claim 28, wherein the perceptual symbol sequence of the first perceptual signal in the time domain comprises a product of perceptual symbols with the same index between the fifth perceptual symbol sequence and the sixth perceptual symbol sequence. The method according to claim 29, wherein the fourth perceptual symbol of the perceptual symbol sequence of the first perceptual signal in the time domain is a product of the fifth perceptual symbol of the fifth perceptual symbol sequence and the sixth perceptual symbol of the sixth perceptual symbol sequence; The index of the time domain unit to which the fourth perceptual symbol is mapped is the same as the index of the fifth perceptual symbol, or the index of the time domain unit to which the fourth perceptual symbol is mapped is the same as the index of the sixth perceptual symbol. The method according to any one of claims 18 to 30, further comprising: The network side device sends first indication information to the terminal, where the first indication information is used to indicate at least one of the following: the first perception symbol sequence is generated in a first manner, and the second perception symbol sequence is generated in a second manner; The first method includes a generation method based on discrete Fourier transform or a generation method based on ZC sequence, and the second method includes a generation method based on discrete Fourier transform or a generation method based on ZC sequence. The method according to any one of claims 17 to 31, wherein the first transmission resource is a periodic resource in the time domain, and within each time domain period of the first transmission resource, the difference between the maximum number of frequency domain units and the minimum number of frequency domain units occupied by the first perception signal in the frequency domain of the first transmission resource is configured to be minimized. A sensing signal transmission device, comprising: A first sending module, used to send a first perception signal; The first perception signal is mapped on a first transmission resource, the first transmission resource includes _N1 resource blocks, each of the _N1 resource blocks includes L frequency domain units, and the _N1 resource blocks are equally spaced in the frequency domain, and _N1 and L are both positive integers; The first perception signal is determined according to a first perception symbol sequence and a second perception symbol sequence, the length of the first perception symbol sequence is N ₁ , the length of the second perception symbol sequence is L ₁ , L ₁ is the number of frequency domain units in the L frequency domain units used to transmit the perception signal, and the L ₁ frequency domain units used to transmit the perception signal are equally spaced in the frequency domain, and L ₁ is an integer greater than or equal to 1 and less than or equal to L. A sensing signal transmission device, comprising: A first receiving module, configured to receive a first sensing signal; The first perception signal is mapped on a first transmission resource, the first transmission resource includes _N1 resource blocks, each of the _N1 resource blocks includes L frequency domain units, and the _N1 resource blocks are equally spaced in the frequency domain, and _N1 and L are both positive integers; The first perception signal is determined according to a first perception symbol sequence and a second perception symbol sequence, the length of the first perception symbol sequence is N ₁ , the length of the second perception symbol sequence is L ₁ , L ₁ is the number of frequency domain units in the L frequency domain units used to transmit the perception signal, and the L ₁ frequency domain units used to transmit the perception signal are equally spaced in the frequency domain, and L ₁ is an integer greater than or equal to 1 and less than or equal to L. A terminal comprises a processor and a memory, wherein the memory stores a program or instruction that can be run on the processor, and when the program or instruction is executed by the processor, the steps of the perceptual signal transmission method as described in any one of claims 1 to 16 are implemented. A network side device comprises a processor and a memory, wherein the memory stores a program or instruction that can be run on the processor, and when the program or instruction is executed by the processor, the steps of the perception signal transmission method as described in any one of claims 17 to 32 are implemented.