Quality information determination method and apparatus, terminal, and storage medium

Abstract

The application discloses a quality information determination method and device, a terminal and a storage medium, and belongs to the technical field of communication. The quality information determination method provided by the application comprises the following steps: a terminal receives a first signal, a transmission signal corresponding to the first signal is a signal obtained by converting a signal after mapping first bearing information in a delay-Doppler domain to a time domain; and the terminal determines quality information corresponding to the first signal in the delay-Doppler domain.

Description

Technical Field

[0001] This application belongs to the field of communication technology, and specifically relates to a method, apparatus, terminal and storage medium for determining quality information. Background Technology

[0002] Information describing signal quality can be used in communication processes such as power control and cell handover to ensure the communication quality of the terminal.

[0003] However, there is currently a lack of methods for defining signal quality information based on the delayed Doppler domain. If synchronization signals, reference signals, or signals used to measure cross-link interference (CLI) are mapped to the delayed Doppler domain, the terminal will be unable to perform cell handover and power control, which will lead to a decrease in the terminal's communication quality. Summary of the Invention

[0004] This application provides a method, apparatus, terminal, and storage medium for determining quality information, which can improve the communication quality of the terminal.

[0005] Firstly, a method for determining quality information is provided, the method comprising:

[0006] The terminal receives a first signal, and the transmission signal corresponding to the first signal is a signal that is converted from the first bearer information to the time domain after being mapped to the delayed Doppler domain and then transmitted.

[0007] The terminal determines the quality information corresponding to the first signal in the delayed Doppler domain. In a second aspect, a quality information determination apparatus is provided, the apparatus comprising:

[0008] The receiving module is used for the terminal to receive a first signal, wherein the transmitting signal corresponding to the first signal is a signal that is converted from the first bearer information to the time domain after being mapped in the delayed Doppler domain;

[0009] A determining module is used to determine the quality information corresponding to the first signal in the delayed Doppler domain. In a third aspect, a terminal is provided, comprising a processor and a memory, the memory storing a program or instructions executable on the processor, the program or instructions, when executed by the processor, implementing the steps of the method described in the first aspect.

[0010] Fourthly, a terminal is provided, including a processor and a communication interface, wherein the communication interface is used for:

[0011] Receive a first signal, the transmission signal corresponding to the first signal is a signal that maps the first bearer information into the delayed Doppler domain and then converts it to the time domain for transmission;

[0012] The processor is used for:

[0013] Determine the quality information of the first signal in the delayed Doppler domain.

[0014] Fifthly, a system for determining the quality information of a received signal is provided, comprising: a terminal, the terminal being configured to perform the steps of the quality information determination method as described in the first aspect.

[0015] In a sixth aspect, a readable storage medium is provided, on which a program or instructions are stored, which, when executed by a processor, implement the steps of the method described in the first aspect.

[0016] In a seventh aspect, a chip is provided, the chip including a processor and a communication interface, the communication interface being coupled to the processor, the processor being used to run programs or instructions to implement the method as described in the first aspect.

[0017] Eighthly, a computer program / program product is provided, which is stored in a storage medium and executed by at least one processor to implement the steps of the quality information determination method as described in the first aspect.

[0018] In this embodiment, the terminal determines the quality information corresponding to the first signal in the delayed Doppler domain after receiving the first signal in the delayed Doppler domain. This clarifies the method for obtaining the quality information corresponding to the signal in the delayed Doppler domain, which facilitates the execution of services such as power control and cell handover, and improves the communication quality of the terminal. Attached Figure Description

[0019] Figure 1 This diagram illustrates a block diagram of a wireless communication system to which embodiments of this application may be applied;

[0020] Figure 2 This is a schematic diagram illustrating the mutual conversion between the delayed Doppler plane and the time-frequency plane provided in the embodiments of this application;

[0021] Figure 3 This is a schematic diagram illustrating the channel response relationship under different planes provided in the embodiments of this application;

[0022] Figure 4 This is a schematic diagram of the transceiver processing flow of the OTFS multi-carrier system provided in the embodiments of this application;

[0023] Figure 5 This is a schematic diagram of the pilot mapping in the delayed Doppler domain provided in an embodiment of this application;

[0024] Figure 6 This is a flowchart illustrating the method for determining quality information provided in an embodiment of this application;

[0025] Figure 7 This is a schematic diagram of the first delayed Doppler region in a single-port configuration provided in an embodiment of this application;

[0026] Figure 8 This is a schematic diagram of the first delayed Doppler region in a two-port configuration provided in an embodiment of this application;

[0027] Figure 9 This is one of the schematic diagrams of the first signal provided in the embodiments of this application;

[0028] Figure 10 This is a second schematic diagram of the first signal provided in the embodiments of this application;

[0029] Figure 11 This is the third schematic diagram of the first signal provided in the embodiments of this application;

[0030] Figure 12 This is a schematic diagram of the quality information determination device provided in the embodiments of this application;

[0031] Figure 13 This is a schematic diagram of the structure of the communication device provided in the embodiments of this application;

[0032] Figure 14 A schematic diagram of the hardware structure of a terminal to implement an embodiment of this application. Detailed Implementation

[0033] The technical solutions of the embodiments of this application will be clearly described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application are within the scope of protection of this application.

[0034] The terms "first," "second," etc., used in the specification and claims of this application are used to distinguish similar objects and not to describe a specific order or sequence. It should be understood that such terms can be used interchangeably where appropriate so that embodiments of this application can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first" and "second" are generally of the same class, not limited in number; for example, a first object can be one or more. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0035] It is worth noting that the technologies described in this application are not limited to Long Term Evolution (LTE) / LTE-Advanced (LTE-A) systems, 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), and other systems. The terms "system" and "network" in this application are often used interchangeably, and the described technologies can be used with the systems and radio technologies mentioned above, as well as with other systems and radio technologies. The following description describes New Radio (NR) systems for illustrative purposes, and NR terminology is used in most of the following description; however, these technologies can also be applied to applications beyond NR systems, such as 6th generation (6G) radio systems. th Generation 6G communication system.

[0036] Figure 1This diagram illustrates a block diagram of a wireless communication system applicable to embodiments of this application. The wireless communication system includes a terminal 11 and a network-side device 12. Terminal 11 can be a mobile phone, tablet computer, laptop computer, personal digital assistant (PDA), handheld computer, netbook, ultra-mobile personal computer (UMPC), mobile internet device (MID), augmented reality (AR) / virtual reality (VR) device, robot, wearable device, vehicle-mounted device (VUE), pedestrian terminal (PUE), smart home (home devices with wireless communication capabilities, such as refrigerators, televisions, washing machines, or furniture), game console, personal computer (PC), ATM, or self-service machine, etc. Wearable devices include: smartwatches, smart bracelets, smart headphones, smart glasses, smart jewelry (smart bracelets, smart chains, smart rings, smart necklaces, smart anklets, smart anklets, etc.), smart wristbands, smart clothing, etc. It should be noted that the specific type of terminal 11 is not limited in this embodiment. Network-side equipment 12 may include access network equipment or core network equipment. Access network equipment 12 may also be referred to as radio access network equipment, radio access network (RAN), radio access network function, or radio access network unit. Access network equipment 12 may include base stations, WLAN access points, or WiFi nodes, etc. Base stations may be referred to as Node B, evolved Node B (eNB), access point, base transceiver station (BTS), radio base station, radio transceiver, Basic Service Set (BSS), Extended Service Set (ESS), home B node, home evolved B node, Transmitting Receiving Point (TRP), or any other suitable term in the field, as long as the same technical effect is achieved. The base station is not limited to specific technical terms. It should be noted that in this application embodiment, only a base station in an NR system is used as an example for description, and the specific type of base station is not limited.Core network equipment may include, but is not limited to, at least one of the following: core network node, core network function, Mobility Management Entity (MME), Access and Mobility Management Function (AMF), Session Management Function (SMF), User Plane Function (UPF), Policy Control Function (PCF), Policy and Charging Rules Function (PCRF), Edge Application Server Discovery Function (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), and Application Function. Function (AF), etc. It should be noted that the embodiments of this application only use the core network equipment in the NR system as an example for introduction, and do not limit the specific type of core network equipment.

[0037] First, let's introduce the following content:

[0038] 1. OTFS communication technology;

[0039] The channel delay and Doppler characteristics are essentially determined by the multipath channel. Signals arriving at the receiver via different paths have different arrival times due to the varying propagation distances. For example, if two echoes s1 and s2 travel distances d1 and d2 respectively to reach the receiver, their arrival time difference is... c represents the speed of light. Due to this time difference between the echoes s1 and s2, their incoherent superposition at the receiver causes observed signal amplitude jitter, i.e., fading. Similarly, Doppler diffusion in multipath channels is also caused by multipath effects.

[0040] The Doppler effect occurs because the relative velocities at the transmitting and receiving ends are different. Signals arriving at the receiver via different paths have different angles of incidence relative to the antenna normal, resulting in differences in relative velocity and consequently, different Doppler frequency shifts. Assuming the original signal frequency is f0, the relative velocity between the transmitting and receiving ends is Δv, and the angle of incidence between the signal and the antenna normal is θ, then: Obviously, when the two echoes s1 and s2 arrive at the receiving antenna through different paths and have different incident angles θ1 and θ2, the resulting Doppler frequency shifts Δf1 and Δf2 will also be different.

[0041] In summary, the signal perceived by the receiver is a superposition of components from different paths with varying time delays and Doppler characteristics, resulting in a received signal that is fading and frequency-shifted relative to the original signal. Delay-Doppler analysis of the channel helps to collect delay-Doppler information for each path, thus reflecting the channel's delay-Doppler response.

[0042] OTFS modulation stands for Orthogonal Time Frequency Modulation. This technique logically maps information from an M×N data packet, such as QAM (Quadrature Amplitude Modulation) symbols, onto an M×N grid on a two-dimensional delayed Doppler plane. In other words, the pulse within each grid modulates a QAM symbol in the data packet.

[0043] Furthermore, by designing a set of orthogonal two-dimensional basis functions, the dataset on the M×N delayed Doppler domain plane can be transformed to the N×M time-frequency domain plane. This transformation is mathematically known as the Inverse Symmetric Fourier Transform (ISSFT).

[0044] Correspondingly, the transformation from the time-frequency domain to the delayed Doppler domain is called the Sympletic Fourier Transform (SFFT). The underlying physical meaning is that the signal delay and Doppler effect are actually a linear superposition effect of a series of echoes with different time and frequency offsets after the signal passes through a multipath channel. That is, delayed Doppler analysis and time-frequency domain analysis can be obtained through mutual conversion between the aforementioned ISSFT and SSFT.

[0045] Figure 2 This is a schematic diagram illustrating the mutual conversion between the delayed Doppler plane and the time-frequency plane provided in the embodiments of this application; as shown... Figure 2 As shown, OTFS technology can transform a time-varying multipath channel into a time-invariant two-dimensional delayed Doppler domain channel (within a certain duration), thus directly reflecting the channel's delayed Doppler response characteristics caused by the geometric characteristics of the relative positions of reflectors between transceivers in the wireless link. The advantage of this is that OTFS eliminates the difficulty of tracking time-varying fading characteristics using traditional time-frequency domain analysis, instead extracting all diversity characteristics of the time-frequency domain channel through delayed Doppler domain analysis. In practical systems, because the number of channel delay paths and Doppler shifts is much smaller than the number of time-domain and frequency-domain responses, the channel impulse response matrix characterized by the delayed Doppler domain is sparse. Using OTFS technology to analyze the sparse channel matrix in the delayed Doppler domain allows for more compact and flexible encapsulation of the reference signal.

[0046] The core of OTFS modulation is the transformation of symbols defined on the delayed Doppler plane into the time-frequency domain for transmission, followed by processing in the delayed Doppler domain at the receiving end. Therefore, a wireless channel response analysis method in the delayed Doppler domain can be introduced.

[0047] Figure 3 This is a schematic diagram illustrating the channel response relationship under different planes provided in the embodiments of this application, such as... Figure 3 As shown, this illustrates the relationship between the channel response of a signal passing through a linear time-varying wireless channel in different planes.

[0048] exist Figure 3 In this diagram, h(τ,ν) represents the delayed Doppler domain channel, H(t,f) represents the time-frequency domain channel, g(t,τ) represents the time-delay domain channel, and B(v,f) represents the frequency-Doppler domain channel. t, f, τ, and v represent time, frequency, delay, and Doppler, respectively. The SFFT transform formula is:

[0049] h(τ,ν)=∫∫H(t,f)e -j2π(νt-fτ) dτdv; (1)

[0050] Where h(τ,ν) represents the delayed Doppler domain channel, and H(t,f) represents the time-frequency domain channel. Correspondingly, the ISSFT transform formula is:

[0051] H(t,f)=∫∫h(τ,ν)e j2π(νt-fτ) dτdν; (2)

[0052] The delayed Doppler domain channel h(τ,v) is the sum of all multipath channels, and can be expressed as:

[0053]

[0054] Where P represents the total number of paths, h i Let δ() represent the channel gain of the i-th path, and let τ represent the Dirac delta function. i v represents the delay of the i-th path. i Doppler of the i-th path.

[0055] When a signal passes through a linear time-varying channel, let the received signal in the time domain be r(t), and its corresponding received signal in the frequency domain be R(f), and we have... r(t) can be expressed in the following form:

[0056] r(t)=s(t)*h(t)=∫g(t,τ)s(t-τ)dτ; (4)

[0057] Depend on Figure 3 The relationship is known to be that

[0058] g(t,τ)=∫h(ν,τ)e j2πvt dν; (5)

[0059] Substituting (5) into (4) yields:

[0060] r(t)∫∫h(ν,τ)s(t-τ)e j2πvt dτdν;(6)

[0061] Depend on Figure 3 The relationship shown can be derived from classical Fourier transform theory and formula (6):

[0062]

[0063] Based on equation (7), it can be seen that the delayed Doppler domain analysis in the OTFS system can be achieved by adding an additional signal processing step at the transceiver end, relying on the existing communication framework built on the time-frequency domain. Furthermore, this additional signal processing consists only of Fourier transforms and can be implemented entirely through existing hardware without the need for additional modules. This excellent compatibility with existing hardware greatly facilitates the application of the OTFS system.

[0064] In practical systems, OTFS technology can be easily implemented as a pre-processing and post-processing module of a filtered OFDM system, thus having good compatibility with multi-carrier systems under the existing NR technology architecture.

[0065] When OTFS is combined with a multi-carrier system, the implementation at the transmitting end is as follows: QAM symbols containing the information to be transmitted are carried by waveforms in the delayed Doppler plane. After a two-dimensional inverse sympletic-Finite Fourier transform (ISFFT), they are converted into waveforms in the time-frequency plane of the traditional multi-carrier system. Then, after a symbol-level one-dimensional inverse fast Fourier transform (IFFT) and serial-to-parallel conversion, they are converted into time-domain sampling points and sent out.

[0066] Figure 4 This is a schematic diagram of the transceiver processing flow of the OTFS multi-carrier system provided in the embodiments of this application, as shown below. Figure 4 As shown, the receiver of an OTFS system is roughly the reverse process of the transmitter: after the time-domain sampling points are received by the receiver, they undergo parallel transmission conversion and symbol-level one-dimensional Fast Fourier Transform (FFT) to transform them into waveforms in the time-frequency domain. Then, they undergo two-dimensional Sympletic Finite Fourier Transform (SFFT) to transform them into waveforms in the delayed Doppler domain. Finally, the QAM symbols carried by the delayed Doppler domain waveform are processed by the receiver, including channel estimation and equalization, demodulation, and decoding.

[0067] The advantages of OTFS modulation are mainly reflected in the following aspects:

[0068] (a) OTFS modulation transforms the time-varying fading channel in the time-frequency domain between transceivers into a deterministic fading-free channel in the delayed Doppler domain. In the delayed Doppler domain, each symbol in a single transmission of a set of information symbols experiences the same static channel response and signal-to-noise ratio (SNR).

[0069] (b) The OTFS system resolves reflectors in the physical channel by analyzing delayed Doppler images and coherently combines energy from different reflection paths using a receiver equalizer, effectively providing a fading-free static channel response. Utilizing these static channel characteristics, the OTFS system does not require closed-loop channel adaptation to cope with rapidly changing channels, unlike OFDM systems, thus improving system robustness and reducing system design complexity.

[0070] (c) Since the number of delay-Doppler states in the delay-Doppler domain is much smaller than the number of time-frequency states in the time-frequency domain, the channel in the OTFS system can be expressed in a very compact form. The channel estimation overhead of the OTFS system is less and more accurate.

[0071] (d) Another advantage of OTFS lies in its ability to handle extreme Doppler channels. By analyzing the delayed Doppler image with appropriate signal processing parameters, the Doppler characteristics of the channel can be fully revealed, which is beneficial for signal analysis and processing in Doppler-sensitive scenarios (such as high-speed movement and millimeter waves).

[0072] Figure 5 This is a schematic diagram of the pilot mapping in the delayed Doppler domain provided in an embodiment of this application; as shown... Figure 5 As shown, pulse pilots can be used for channel estimation in the OTFS system. The transmitter places pilots in the delayed Doppler domain and transmits them after conversion to the time-frequency domain. Pulse pilots (such as those placed in the M×N delayed Doppler domain transmitted signal) are then used to perform channel estimation. Figure 5 The resource cell containing the square in the left-hand delayed Doppler resource cell), the pilot position is generally (l p ,k p Considering the maximum channel delay and Doppler spread, to prevent mutual interference between the pilot and data, which could lead to inaccurate channel estimation, the area around the pilot should be at least (2l). τ +1)(4k v +1)-1 protection symbol (such as Figure 5 The resource cell containing the circle in the left-hand delayed Doppler resource cell), where l τ =τ max MΔf,k τ =τ max NT, τ max and ν max These represent the maximum channel delay and maximum Doppler shift, respectively; the remaining positions are occupied by MN-(2l) τ +1)(4k v +1) data (such as Figure 5 (The resource cell containing the cross in the left-hand delayed Doppler resource cell).

[0073] like Figure 5 As shown, the receiver, after performing the corresponding inverse operation, obtains the grid pattern of the delayed Doppler domain. Due to the channel effect, several offset pilot copies (such as...) will appear in the protection symbols of the delayed Doppler domain grid points. Figure 5 The resource cell containing the square in the right-hand delayed Doppler resource cell indicates that the channel may have several paths with different delayed Doppler values. By estimating the channel response h(τ,v) in the delayed Doppler domain through the position offset of the pilot symbol at the receiver, the channel response expression in the time-frequency domain can be obtained, facilitating signal analysis and processing.

[0074] The following description, in conjunction with the accompanying drawings, details the quality information determination method, apparatus, terminal, and storage medium provided in this application through some embodiments and application scenarios.

[0075] Figure 6 This is a flowchart illustrating the quality information determination method provided in the embodiments of this application; as follows: Figure 6 As shown, the method includes the following steps:

[0076] Step 600: The terminal receives a first signal, and the transmission signal corresponding to the first signal is a signal that is converted from the first bearer information to the time domain after being mapped in the delayed Doppler domain.

[0077] Step 610: The terminal determines the quality information of the first signal corresponding to the delayed Doppler domain.

[0078] Optionally, the executing entity can be a terminal, which is a receiving end; the transmitting end can be a network-side device, which can map the transmitted signal in the delayed Doppler domain and convert it to the time domain before sending it to the terminal at the receiving end, so that the terminal at the receiving end can receive the first signal.

[0079] Optionally, the executing entity can be a terminal, which is a receiving end; the sending end can be another terminal, in which case the terminal at the sending end can map the transmitted signal in the delayed Doppler domain and convert it to the time domain, and send it to the terminal at the receiving end, so that the terminal at the receiving end can receive the first signal.

[0080] Optionally, after receiving the first signal, the terminal can determine the quality information corresponding to the first signal in the delayed Doppler domain.

[0081] Optionally, the first signal is the signal of the receiving end, the corresponding transmitting signal is the signal that is converted to the time domain and transmitted at the transmitting end, and the first carrying information is the information mapped in the delayed Doppler domain, which can be a reference signal, a synchronization signal, etc.

[0082] Optionally, the transmitting end can map the first bearer information, such as the reference signal or synchronization signal, to the delayed Doppler domain, and then convert the first bearer information to the time domain to obtain the transmitted signal for transmission. The receiving end can then receive the received signal corresponding to the transmitted signal, i.e., the first signal.

[0083] Optionally, the transmitted signal corresponding to the first signal is a signal that is converted from the first bearer information into the time domain after being mapped in the delayed Doppler domain;

[0084] Optionally, the transmission signal corresponding to the first signal is a signal that the terminal sends after mapping the first bearer information in the delayed Doppler domain to the time domain.

[0085] In this embodiment, the terminal determines the quality information corresponding to the first signal in the delayed Doppler domain after receiving the first signal in the delayed Doppler domain. This clarifies the method for obtaining the quality information corresponding to the signal in the delayed Doppler domain, which facilitates the execution of services such as power control and cell handover, and improves the communication quality of the terminal.

[0086] Optionally, the terminal determines the quality information of the first signal corresponding to the delayed Doppler domain, including any one or more of the following:

[0087] The terminal determines the delayed Doppler domain received power RSRP corresponding to the first signal;

[0088] The terminal determines the delayed Doppler domain signal strength indication RSSI corresponding to the first signal;

[0089] The terminal determines the Delayed Doppler Domain Receive Quality (RSRQ) corresponding to the first signal; or

[0090] The terminal determines the delayed Doppler domain signal and interference evaluation index corresponding to the first signal.

[0091] Optionally, the quality information of the first signal corresponding to the delayed Doppler domain may include the delayed Doppler domain received power (RSRP), delayed Doppler domain received quality (RSRP), delayed Doppler domain received signal strength indication (RSSI), and delayed Doppler domain signal and interference evaluation index.

[0092] Optionally, quality information such as delayed Doppler domain received power (RSRP), delayed Doppler domain signal strength indication (RSSI), delayed Doppler domain received quality (RSRQ), and delayed Doppler domain signal and interference assessment index can be quality information in a 5G communication system.

[0093] The quality information (Delayed Doppler Domain Received Power RSRP, Delayed Doppler Domain Signal Strength Indicator RSSI, Delayed Doppler Domain Received Quality RSRQ, Delayed Doppler Domain Signal and Interference Evaluation Index) involved in the various embodiments of this application may also be information with other names that are applicable to other communication systems and have the same physical meaning as the quality information in the aforementioned 5G communication system.

[0094] Optionally, the terminal determining the quality information corresponding to the first signal in the delayed Doppler domain may include: the terminal determining the delayed Doppler domain received power RSRP corresponding to the first signal;

[0095] Optionally, the terminal determining the quality information corresponding to the first signal in the delayed Doppler domain may include: the terminal determining the delayed Doppler domain signal strength indication (RSSI) corresponding to the first signal;

[0096] Optionally, the terminal determining the quality information corresponding to the first signal in the delayed Doppler domain may include: the terminal determining the delayed Doppler domain reception quality (RSRQ) corresponding to the first signal;

[0097] Optionally, the terminal determining the quality information corresponding to the first signal in the delayed Doppler domain may include: the terminal determining the delayed Doppler domain signal and interference evaluation index corresponding to the first signal;

[0098] Optionally, the terminal determining the quality information corresponding to the first signal in the delayed Doppler domain may include: the terminal determining the received power in the delayed Doppler domain corresponding to the first signal;

[0099] Optionally, the terminal determining the quality information corresponding to the first signal in the delayed Doppler domain may include: the terminal determining the delayed Doppler domain signal strength indication corresponding to the first signal;

[0100] Optionally, the terminal determining the quality information corresponding to the first signal in the delayed Doppler domain may include: the terminal determining the delayed Doppler domain reception quality corresponding to the first signal;

[0101] Optionally, the terminal determining the quality information corresponding to the first signal in the delayed Doppler domain may include: the terminal determining the delayed Doppler domain signal and interference evaluation index corresponding to the first signal;

[0102] Optionally, the terminal determining the quality information corresponding to the first signal in the delayed Doppler domain may include: the terminal determining the delayed Doppler domain received power RSRP, delayed Doppler domain signal strength indication RSSI, delayed Doppler domain received quality RSRQ, and delayed Doppler domain signal and interference evaluation index corresponding to the first signal;

[0103] Optionally, the terminal determining the quality information corresponding to the first signal in the delayed Doppler domain may include: the terminal determining the delayed Doppler domain received power, delayed Doppler domain signal strength indication, delayed Doppler domain received quality, and delayed Doppler domain signal and interference evaluation index corresponding to the first signal;

[0104] Optionally, the terminal determining the quality information corresponding to the first signal in the delayed Doppler domain may include: the terminal determining any one or any combination of the delayed Doppler domain received power RSRP, delayed Doppler domain signal strength indication RSSI, delayed Doppler domain received quality RSRQ, and delayed Doppler domain signal and interference evaluation index corresponding to the first signal;

[0105] Optionally, the terminal determining the quality information corresponding to the first signal in the delayed Doppler domain may include: the terminal determining any one or any combination of the delayed Doppler domain received power, delayed Doppler domain signal strength indication, delayed Doppler domain received quality, and delayed Doppler domain signal and interference evaluation indicators corresponding to the first signal.

[0106] Optionally, the terminal determines the delayed Doppler domain reception quality (RSRQ) corresponding to the first signal, including:

[0107] After the terminal determines the delayed Doppler domain received power (RSRP) corresponding to the first signal and the terminal determines the delayed Doppler domain signal strength indication (RSSI) corresponding to the first signal, the terminal determines the delayed Doppler domain received quality (RSRQ) corresponding to the first signal based on the delayed Doppler domain received power (RSRP) and the delayed Doppler domain signal strength indication (RSSI) corresponding to the first signal.

[0108] Optionally, the delayed Doppler domain reception quality (RSRQ) corresponding to the first signal can be determined based on the delayed Doppler domain reception power (RSRP) and the delayed Doppler domain signal strength indication (RSSI).

[0109] Optionally, the reception quality corresponding to the first signal can be determined based on the delayed Doppler domain received power and the delayed Doppler domain signal strength indication.

[0110] Optionally, after the terminal determines the delayed Doppler domain received power RSRP and the delayed Doppler domain signal strength indication RSSI corresponding to the first signal, the delayed Doppler domain received quality RSRQ corresponding to the first signal can be determined based on the delayed Doppler domain received power RSRP and the delayed Doppler domain signal strength indication RSSI corresponding to the first signal.

[0111] Optionally, after the terminal determines the received power of the delayed Doppler domain corresponding to the first signal and the signal strength indication of the delayed Doppler domain corresponding to the first signal, the delayed Doppler domain corresponding to the first signal can be determined based on the delayed Doppler domain corresponding to the first signal and the delayed Doppler domain corresponding to the first signal.

[0112] Optionally, the terminal determines the delayed Doppler domain reception quality (RSRQ) corresponding to the first signal based on the delayed Doppler domain received power (RSRP) and the delayed Doppler domain signal strength indication (RSSI) corresponding to the first signal, including:

[0113] The terminal uses the formula: Delayed Doppler domain reception quality Determine the delayed Doppler domain reception quality (RSRQ) corresponding to the first signal;

[0114] Where L is any real number.

[0115] Optionally, the delayed Doppler domain received power RSRP and delayed Doppler domain signal strength indication RSSI can be defined as L times the delayed Doppler domain received quality RSRQ, where L is any real number.

[0116] Optionally, L is predefined by the protocol, indicated by the communication peer, or determined by the terminal itself.

[0117] Optionally, when the receiving end is a terminal and the communication peer (sender) is a network-side device, L is indicated by the communication peer through one or more of the following:

[0118] MAC CE;

[0119] RRC message;

[0120] NAS message;

[0121] Manage and orchestrate messages;

[0122] User face data;

[0123] DCI information;

[0124] System Information Block (SIB);

[0125] Layer 1 signaling of the Physical Downlink Control Channel (PDCCH);

[0126] Information about the Physical Downlink Shared Channel (PDSCH);

[0127] MSG 2 information of the Physical Random Access Channel (PRACH);

[0128] MSG 4 information of the Physical Random Access Channel (PRACH); or

[0129] MSG B information for the Physical Random Access Channel (PRACH).

[0130] Optionally, when the receiving end is a terminal and the communication peer (sending end) is a terminal, L is indicated by the communication peer through one or more of the following:

[0131] Xn interface signaling;

[0132] PC5 interface signaling;

[0133] Information from the Physical Side Link Control Channel (PSCCH);

[0134] Information about the Physical Side Link Shared Channel (PSSCH);

[0135] Information from the Physical Side Link Broadcast Channel (PSBCH);

[0136] Information about the Physical Straight-Through Link Discovery Channel (PSDCH); or

[0137] Information from the Physical Straight-Through Link Feedback Channel (PSFCH).

[0138] Optionally, the delayed Doppler domain reception quality can be defined as L times the ratio of the delayed Doppler domain received power to the delayed Doppler domain signal strength indication, where L is any real number.

[0139] Optionally, a delay can be defined. The delayed Doppler domain received power and delayed Doppler domain signal strength indication are obtained based on the same first signal. That is, the first signal contained in the first delayed Doppler region when calculating the delayed Doppler domain received power is the same as the first signal contained in the second delayed Doppler region when calculating the delayed Doppler domain signal strength indication.

[0140] Optionally, the delayed Doppler domain reception quality can be defined. The Delayed Doppler Received Power (RSRP) and Delayed Doppler Signal Strength Indication (RSSI) are obtained based on the same first signal. That is, the first signal contained in the first delayed Doppler region when calculating the delayed Doppler Received Power is the same as the first signal contained in the second delayed Doppler region when calculating the delayed Doppler Signal Strength Indication.

[0141] Optionally, after the terminal determines the delayed Doppler domain received power and the delayed Doppler domain signal strength indication corresponding to the first signal, it can use the following formula: Determine the delayed Doppler domain reception quality corresponding to the first signal; where L is any real number.

[0142] Optionally, after the terminal determines the Delayed Doppler Domain Received Power (RSRP) and the Delayed Doppler Domain Signal Strength Indication (RSSI) corresponding to the first signal, the Delayed Doppler Domain Received Quality can be determined using the formula: Delayed Doppler Domain Received Quality Determine the delayed Doppler domain reception quality (RSRQ) corresponding to the first signal; where L is any real number.

[0143] Optionally, if the delayed Doppler domain received power is the delayed Doppler domain reference signal, then the calculated delayed Doppler domain received quality is the delayed Doppler domain reference signal.

[0144] Optionally, if the delayed Doppler domain received power is the delayed Doppler domain synchronization signal, then the calculated delayed Doppler domain received quality is the delayed Doppler domain synchronization signal.

[0145] Optionally, if the delayed Doppler domain received power RSRP is the delayed Doppler domain reference signal RSRP, then the calculated delayed Doppler domain received quality RSRQ is the delayed Doppler domain reference signal RSRQ.

[0146] Optionally, if the delayed Doppler domain received power RSRP is the delayed Doppler domain synchronization signal RSRP, then the calculated delayed Doppler domain received quality RSRQ is the delayed Doppler domain synchronization signal RSRQ.

[0147] Optionally, the terminal determines the delayed Doppler domain signal and interference evaluation index corresponding to the first signal, including:

[0148] The terminal determines the delayed Doppler domain interference power, which is determined based on the interference measurement signal corresponding to the first signal;

[0149] After the terminal determines the delayed Doppler domain received power (RSRP) corresponding to the first signal, the terminal determines the delayed Doppler domain signal and interference evaluation index corresponding to the first signal based on the delayed Doppler domain received power (RSRP) and the delayed Doppler domain interference power.

[0150] Optionally, the delayed Doppler domain signal and interference evaluation index corresponding to the first signal can be determined based on the delayed Doppler domain interference power and the delayed Doppler domain received power RSRP corresponding to the first signal, wherein the delayed Doppler domain interference power is determined based on the interference measurement signal corresponding to the first signal;

[0151] Optionally, the delayed Doppler domain signal and interference evaluation index corresponding to the first signal can be determined based on the delayed Doppler domain interference power and the delayed Doppler domain received power corresponding to the first signal, wherein the delayed Doppler domain interference power is determined based on the interference measurement signal corresponding to the first signal;

[0152] Optionally, after the terminal determines the delayed Doppler domain interference power and the delayed Doppler domain received power RSRP corresponding to the first signal, the delayed Doppler domain signal and interference evaluation index corresponding to the first signal can be determined based on the delayed Doppler domain interference power and the delayed Doppler domain received power RSRP corresponding to the first signal.

[0153] Optionally, after the terminal determines the delayed Doppler domain interference power and the delayed Doppler domain received power corresponding to the first signal, it can determine the delayed Doppler domain signal and interference evaluation index corresponding to the first signal based on the delayed Doppler domain interference power and the delayed Doppler domain received power corresponding to the first signal.

[0154] Optionally, the terminal determines the delayed Doppler domain signal and interference evaluation index corresponding to the first signal based on the delayed Doppler domain received power (RSRP) and the delayed Doppler domain interference power, including:

[0155] The terminal uses the following formula: Determine the delayed Doppler domain signal and interference evaluation index corresponding to the first signal;

[0156] Where T is any real number.

[0157] Optionally, a multiple of T times the delayed Doppler domain received power and delayed Doppler domain interference power can be defined as a delayed Doppler domain signal and interference evaluation index, where T is any real number.

[0158] Optionally, the delayed Doppler domain received power RSRP and the delayed Doppler domain interference power T times can be defined as delayed Doppler domain signal and interference evaluation indicators, where T is any real number.

[0159] Optionally, it can be defined

[0160] Optionally, it can be defined

[0161] Optionally, after the terminal determines the delayed Doppler domain received power and the delayed Doppler domain interference power based on the interference measurement signal corresponding to the first signal, it can use the formula: Determine the delayed Doppler domain signal and interference evaluation index corresponding to the first signal; where T is any real number.

[0162] Optionally, after the terminal determines the delayed Doppler domain received power RSRP and the delayed Doppler domain interference power based on the interference measurement signal corresponding to the first signal, the following formula can be used: Determine the delayed Doppler domain signal and interference evaluation index corresponding to the first signal; where T is any real number.

[0163] Optionally, when the delayed Doppler domain interference power includes interference, the delayed Doppler domain signal and interference evaluation metric is the signal to interference ratio (SIR).

[0164] Optionally, when the delayed Doppler domain interference power includes both interference and noise, the delayed Doppler domain signal and interference evaluation metric is the signal to interference plus noise ratio (SINR).

[0165] Optionally, T is predefined by the protocol, indicated by the communication peer, or determined by the terminal itself.

[0166] Optionally, when the receiving end is a terminal and the communication peer (sender) is a network-side device, T is indicated by the communication peer through one or more of the following:

[0167] MAC CE;

[0168] RRC message;

[0169] NAS message;

[0170] Manage and orchestrate messages;

[0171] User face data;

[0172] DCI information;

[0173] System Information Block (SIB);

[0174] Layer 1 signaling of the Physical Downlink Control Channel (PDCCH);

[0175] Information about the Physical Downlink Shared Channel (PDSCH);

[0176] MSG 2 information of the Physical Random Access Channel (PRACH);

[0177] MSG 4 information of the Physical Random Access Channel (PRACH); or

[0178] MSG B information for the Physical Random Access Channel (PRACH).

[0179] Optionally, when the receiving end is a terminal and the communication peer (sending end) is a terminal, T is indicated by the communication peer through one or more of the following:

[0180] Xn interface signaling;

[0181] PC5 interface signaling;

[0182] Information from the Physical Side Link Control Channel (PSCCH);

[0183] Information about the Physical Side Link Shared Channel (PSSCH);

[0184] Information from the Physical Side Link Broadcast Channel (PSBCH);

[0185] Information about the Physical Straight-Through Link Discovery Channel (PSDCH); or

[0186] Information from the Physical Straight-Through Link Feedback Channel (PSFCH).

[0187] Optionally, the delayed Doppler domain interference power is obtained by performing interference measurement on the interference measurement signal corresponding to the first signal.

[0188] Optionally, any measurement method that can perform interference measurement on the interference measurement signal corresponding to the first signal is applicable to the embodiments of this application, and is not limited herein.

[0189] Optionally, if the delayed Doppler domain received power RSRP is obtained based on the reference signal, then the delayed Doppler domain interference power is also obtained based on the reference signal measurement, and the calculated delayed Doppler domain signal and interference evaluation index is the delayed Doppler domain reference signal SIR or SINR.

[0190] Optionally, if the delayed Doppler domain received power RSRP is obtained based on the synchronization signal, then the delayed Doppler domain interference power is also obtained based on the synchronization signal measurement, and the calculated delayed Doppler domain signal and interference evaluation index is the delayed Doppler domain synchronization signal SIR or SINR.

[0191] Optionally, if the delayed Doppler domain received power is obtained based on a reference signal, then the delayed Doppler domain interference power is also obtained based on a measurement of the reference signal, and the calculated delayed Doppler domain signal and interference evaluation index is the delayed Doppler domain reference signal.

[0192] Optionally, if the delayed Doppler domain received power is obtained based on the synchronization signal, then the delayed Doppler domain interference power is also obtained based on the synchronization signal measurement, and the calculated delayed Doppler domain signal and interference evaluation index is the delayed Doppler domain synchronization signal.

[0193] Optionally, the terminal determines the delayed Doppler domain received power (RSRP) corresponding to the first signal, including:

[0194] The terminal determines the first RSRP corresponding to a target port within a target time unit;

[0195] The terminal uses the first RSRP as the delayed Doppler domain received power RSRP corresponding to the first signal.

[0196] Wherein, the first RSRP is the RSRP of the first signal received by the terminal from the target port within the target time unit.

[0197] Optionally, the terminal may determine the RSRP of the first signal received at the target port within a target time unit (the transmission signal corresponding to the first signal is transmitted at the transmitting end through the target port), which may be referred to as the first RSRP corresponding to the target port within the aforementioned target time unit, and use the first RSRP corresponding to the target port within the aforementioned target time unit as the delayed Doppler domain received power RSRP corresponding to the first signal.

[0198] Optionally, the terminal determines the delayed Doppler domain received power (RSRP) corresponding to the first signal, including:

[0199] The terminal determines a first RSRP corresponding to a target port within a target time unit. The first RSRP is the RSRP of a first signal received by the terminal from the target port within the target time unit.

[0200] The terminal determines the second RSRP corresponding to the target time unit based on the first RSRP corresponding to the multiple target ports within the target time unit;

[0201] The terminal uses the second RSRP as the delayed Doppler domain received power RSRP corresponding to the first signal.

[0202] Optionally, the terminal can first determine multiple first RSRPs, which correspond to the same target time unit and different target ports. After determining the first RSRPs corresponding to the multiple target ports in a target time unit, the terminal can determine the second RSRP corresponding to the target time unit based on the first RSRPs corresponding to the multiple target ports in the target time unit. Then, the second RSRP can be used as the delayed Doppler domain received power RSRP corresponding to the first signal.

[0203] For example, the terminal can first determine four first RSRPs, which correspond to the same target time unit t1 and different target ports, namely target ports p1, p2, p3, and p4. The first first RSRP corresponds to target port p1, the second first RSRP corresponds to target port p2, the third first RSRP corresponds to target port p3, and the fourth first RSRP corresponds to target port p4. Then, based on these four first RSRPs, the second RSRP corresponding to the target time unit t1 can be calculated, and the second RSRP corresponding to the target time unit t1 can be used as the delayed Doppler domain received power RSRP corresponding to the first signal.

[0204] Optionally, the terminal determines the delayed Doppler domain received power (RSRP) corresponding to the first signal, including:

[0205] The terminal determines a first RSRP corresponding to a target port within a target time unit. The first RSRP is the RSRP of a first signal received by the terminal from the target port within the target time unit.

[0206] The terminal determines the second RSRP corresponding to the target time unit based on the first RSRP corresponding to the multiple target ports within the target time unit;

[0207] The terminal determines the third RSRP based on the second RSRP corresponding to the multiple target time units respectively;

[0208] The terminal uses the third RSRP as the delayed Doppler domain received power RSRP corresponding to the first signal.

[0209] Optionally, the terminal can first determine multiple first RSRPs, which correspond to the same target time unit but different target ports. After determining the first RSRPs corresponding to the multiple target ports within a target time unit, the terminal can determine the second RSRP corresponding to the target time unit based on the first RSRPs corresponding to the multiple target ports within the target time unit. In this way, the terminal can determine the second RSRPs corresponding to the multiple target time units. The target ports corresponding to these multiple second RSRPs can be the same batch of ports. After determining the second RSRPs corresponding to the multiple target time units, the terminal can determine the third RSRP based on the second RSRPs corresponding to the multiple target time units and use the third RSRP as the delayed Doppler domain received power RSRP corresponding to the first signal.

[0210] For example, the terminal can first determine four first RSRPs. These four first RSRPs correspond to the same target time unit t1 but to different target ports, namely target ports p1, p2, p3, and p4. The first first RSRP corresponds to target port p1, the second first RSRP corresponds to target port p2, the third first RSRP corresponds to target port p3, and the fourth first RSRP corresponds to target port p4. Then, based on these four first RSRPs, the second RSRP corresponding to the target time unit t1 can be calculated. Similarly, the second RSRP corresponding to the target time unit t2, the second RSRP corresponding to the target time unit t3, and the second RSRP corresponding to the target time unit t4 can be determined. It should be noted that the four first RSRPs used to determine the second RSRP corresponding to the target time unit t2 correspond to the same target time unit t2 but to different target ports. The ports are respectively the target ports p1, p2, p3, and p4; the four first RSRPs used to determine the second RSRP corresponding to the target time unit t3 correspond to the same target time unit t3 and different target ports, respectively the target ports p1, p2, p3, and p4; the four first RSRPs used to determine the second RSRP corresponding to the target time unit t4 correspond to the same target time unit t2 and different target ports, respectively the target ports p1, p2, p3, and p4; after obtaining the second RSRP corresponding to the target time unit t1, the second RSRP corresponding to the target time unit t2, the second RSRP corresponding to the target time unit t3, and the second RSRP corresponding to the target time unit t4, the third RSRP can be determined based on these four second RSRPs, and the third RSRP is used as the delayed Doppler domain received power RSRP corresponding to the first signal.

[0211] Optionally, the delayed Doppler domain received power RSRP can be defined as the first RSRP, the second RSRP, or the third RSRP mentioned above, used as quality information of the received signal, and can also be used to calculate the delayed Doppler domain received quality and / or delayed Doppler domain signal and interference evaluation index.

[0212] Alternatively, the process of calculating the third RSRP from multiple second RSRPs can also be called filtering. Filtering multiple second RSRPs with the third RSRP can eliminate the effects of rapid fading and reduce the impact of short-term changes.

[0213] Optionally, when the second RSRP is the delayed Doppler domain received power RSRP, it can be primarily used in procedures that require a response with minimal delay, such as beam management procedures that require rapid switching between beams.

[0214] Optionally, when the third RSRP is used as the delayed Doppler domain received power RSRP, it can play a significant role in radio resource management, as it represents a long-term observation of channel conditions. For example, by filtering based on the second RSRP to obtain the third RSRP, and then triggering a handover procedure based on the third RSRP, the risk of ping-pong handover between serving cells can be reduced.

[0215] Optionally, the terminal determines the second RSRP corresponding to the target time unit based on the first RSRP corresponding to the plurality of target ports within the target time unit, including any one of the following:

[0216] The terminal determines the linear average of the first RSRP corresponding to the multiple target ports within the target time unit, and uses this as the second RSRP corresponding to the target time unit; or

[0217] The terminal determines the weighted average of the first RSRPs corresponding to the multiple target ports within the target time unit, and uses this as the second RSRP corresponding to the target time unit; or

[0218] The terminal determines the largest first RSRP among the first RSRPs corresponding to multiple target ports within the target time unit, and uses it as the second RSRP corresponding to the target time unit; or

[0219] The terminal determines the smallest first RSRP among the first RSRPs corresponding to the multiple target ports within the target time unit, and uses it as the second RSRP corresponding to the target time unit.

[0220] Optionally, when the terminal determines the second RSRP corresponding to the target time unit based on the first RSRP corresponding to the multiple target ports within the same target time unit, it can determine the linear average of the first RSRP corresponding to the multiple target ports within the target time unit and use the linear average as the second RSRP corresponding to the target time unit.

[0221] Optionally, when the terminal determines the second RSRP corresponding to the target time unit based on the first RSRP corresponding to the multiple target ports within the same target time unit, it can determine the weighted average of the first RSRP corresponding to the multiple target ports within the target time unit and use the weighted average as the second RSRP corresponding to the target time unit.

[0222] Optionally, when the terminal determines the second RSRP corresponding to the target time unit based on the first RSRP corresponding to the multiple target ports within the same target time unit, it can determine the largest first RSRP among the first RSRPs corresponding to the multiple target ports within the target time unit and use the largest first RSRP as the second RSRP corresponding to the target time unit.

[0223] Optionally, when the terminal determines the second RSRP corresponding to the target time unit based on the first RSRPs corresponding to the multiple target ports within the same target time unit, it can determine the smallest first RSRP among the first RSRPs corresponding to the multiple target ports within the target time unit and use the smallest first RSRP as the second RSRP corresponding to the target time unit.

[0224] Optionally, the first bearer information corresponding to the transmission signals transmitted by the multiple target ports is transmitted through non-overlapping delayed Doppler resources.

[0225] Optionally, the aforementioned multiple target ports can be target ports that are distinguished by non-overlapping delayed Doppler resources;

[0226] Optionally, the plurality of target ports transmit the transmission signal corresponding to the first signal on mutually non-overlapping delayed Doppler resources.

[0227] Taking the determination of the second RSRP as an example, when P ports are distinguished using non-overlapping delayed Doppler resources, the first RSRP corresponding to each first signal can be calculated. The second RSRP can then be determined based on these P first RSRPs, where P is greater than or equal to 1. The determination of the second RSRP based on these P first RSRPs can be based on the mean of these P first RSRPs, or on the maximum or minimum value among them; the mean can be a linear mean or a weighted mean.

[0228] Optionally, the first bearer information corresponding to the transmission signals transmitted by the plurality of target ports respectively is a sequence of mutually orthogonal signals.

[0229] Optionally, the aforementioned target ports can be distinguished by orthogonal sequences;

[0230] Optionally, the first bearer information corresponding to the transmission signals transmitted by the plurality of target ports respectively is a sequence of mutually orthogonal signals.

[0231] Optionally, the first bearer information corresponding to the transmission signals transmitted by the plurality of target ports respectively is a sequence of mutually orthogonal signals.

[0232] Taking the determination of the second RSRP as an example, when distinguishing P ports using orthogonal sequences, sequence sliding window correlation detection can be performed first in the first delayed Doppler region of the received signal to obtain the received signal of the transmitted signal corresponding to each port in the first delayed Doppler region, i.e., the first signal. Then, based on the first signal corresponding to each port, the first RSRP of each port can be calculated, thus obtaining P first RSRPs. The second RSRP can then be determined based on these P first RSRPs, where P is greater than or equal to 1. When determining the second RSRP based on these P first RSRPs, it can be based on the mean of these P first RSRPs or the maximum or minimum value among them; the mean can be a linear mean or a weighted mean.

[0233] Optionally, the terminal determines a third RSRP based on the second RSRP corresponding to each of the multiple target time units, including any one of the following:

[0234] The terminal determines the linear average of the second RSRP corresponding to each of the plurality of target time units, and uses it as the third RSRP corresponding to the target time unit; or

[0235] The terminal determines the weighted average of the second RSRPs corresponding to the plurality of target time units, and uses this as the third RSRP corresponding to the target time unit; or

[0236] The terminal determines the largest second RSRP among the second RSRPs corresponding to the plurality of target time units as the third RSRP corresponding to the target time unit; or

[0237] The terminal determines the smallest second RSRP among the second RSRPs corresponding to the plurality of target time units, and uses it as the third RSRP corresponding to the target time unit.

[0238] Optionally, when the terminal determines the third RSRP based on the second RSRP corresponding to the multiple target time units respectively, it may first determine the linear average value of the second RSRP corresponding to the multiple target time units respectively, and use the linear average value as the third RSRP corresponding to the target time unit;

[0239] Optionally, when the terminal determines the third RSRP based on the second RSRP corresponding to the multiple target time units respectively, it may first determine the weighted average of the second RSRP corresponding to the multiple target time units respectively, and use the weighted average as the third RSRP corresponding to the target time unit;

[0240] Optionally, when the terminal determines the third RSRP based on the second RSRPs corresponding to the multiple target time units respectively, it may first determine the largest second RSRP among the second RSRPs corresponding to the multiple target time units respectively, and use the largest second RSRP as the third RSRP corresponding to the target time unit;

[0241] Optionally, when the terminal determines the third RSRP based on the second RSRPs corresponding to the multiple target time units respectively, it may first determine the smallest second RSRP among the second RSRPs corresponding to the multiple target time units respectively, and use the smallest second RSRP as the third RSRP corresponding to the target time unit.

[0242] Optionally, the terminal determines the delayed Doppler domain received power (RSRP) corresponding to the first signal, including:

[0243] The terminal determines a first RSRP corresponding to a target port within a target time unit. The first RSRP is the RSRP of a first signal received by the terminal from the target port within the target time unit.

[0244] The terminal determines the fourth RSRP based on the first RSRP corresponding to the target port in the multiple target time units respectively;

[0245] The terminal uses the fourth RSRP as the delayed Doppler domain received power RSRP corresponding to the first signal.

[0246] Optionally, the terminal can first determine multiple first RSRPs, which correspond to the same target port and different target time units. After determining the first RSRPs corresponding to a target port in the multiple target time units, the terminal can determine the fourth RSRP corresponding to the target port based on the first RSRPs corresponding to the target port in the multiple target time units. The fourth RSRP can then be used as the delayed Doppler domain received power RSRP corresponding to the first signal.

[0247] For example, the terminal can first determine four first RSRPs. These four first RSRPs correspond to the same target port p1 but to different target time units, namely target time units t1, t2, t3, and t4. The first first RSRP corresponds to target time unit t1, the second first RSRP corresponds to target time unit t2, the third first RSRP corresponds to target time unit t3, and the fourth first RSRP corresponds to target time unit t4. Then, based on these four first RSRPs, the fourth RSRP corresponding to target port p1 can be calculated. The fourth RSRP corresponding to target port p1 can then be used as the delayed Doppler domain received power RSRP corresponding to the first signal.

[0248] Optionally, the delayed Doppler domain received power RSRP can be defined as the first RSRP, second RSRP, third RSRP, or fourth RSRP mentioned above, used as quality information of the received signal, and can also be used to calculate delayed Doppler domain received quality and / or delayed Doppler domain signal and interference evaluation indicators.

[0249] Optionally, the delayed Doppler domain received power can be defined as the first RSRP, second RSRP, third RSRP, or fourth RSRP mentioned above, used as quality information of the received signal, and can also be used to calculate the delayed Doppler domain received quality and / or delayed Doppler domain signal and interference evaluation index.

[0250] Optionally, the terminal determines a fourth RSRP based on the first RSRP corresponding to the one target port in each of the multiple target time units, including any one of the following:

[0251] The terminal determines the linear average of the first RSRP corresponding to the target port in multiple target time units, and uses it as the fourth RSRP corresponding to the target time unit; or

[0252] The terminal determines the weighted average of the first RSRP corresponding to the target port in the multiple target time units, and uses it as the fourth RSRP corresponding to the target time unit; or

[0253] The terminal determines the largest first RSRP among the first RSRPs corresponding to the target port in the multiple target time units, and uses it as the fourth RSRP corresponding to the target time unit; or

[0254] The terminal determines the smallest first RSRP among the first RSRPs corresponding to the target port in the multiple target time units, and uses it as the fourth RSRP corresponding to the target time unit.

[0255] Optionally, when the terminal determines the fourth RSRP based on the first RSRP corresponding to a target port in multiple target time units, it can determine the linear average of the first RSRP corresponding to the target port in multiple target time units and use the linear average as the fourth RSRP corresponding to the target time unit.

[0256] Optionally, when the terminal determines the fourth RSRP based on the first RSRP corresponding to a target port in multiple target time units, it can determine the weighted average of the first RSRP corresponding to the target port in multiple target time units, and use the weighted average as the fourth RSRP corresponding to the target time unit.

[0257] Optionally, when the terminal determines the fourth RSRP based on the first RSRP corresponding to a target port in multiple target time units, it can determine the largest first RSRP among the first RSRPs corresponding to the target port in multiple target time units and use the largest first RSRP as the fourth RSRP corresponding to the target time unit.

[0258] Optionally, when determining the fourth RSRP based on the first RSRP corresponding to a target port in multiple target time units, the terminal may determine the smallest first RSRP among the first RSRPs corresponding to the target port in multiple target time units, and use the smallest first RSRP as the fourth RSRP corresponding to the target time unit.

[0259] Optionally, the plurality of target time units may be continuous, periodic, or aperiodic and discontinuous.

[0260] Optionally, the target time unit may be a delayed Doppler frame, a delayed Doppler subframe, or other time units suitable for the delayed Doppler domain, which is not limited in this application embodiment.

[0261] Optionally, taking a delayed Doppler frame as the target time unit, the mean of K second RSRPs can be calculated, or the maximum or minimum value among the K second RSRPs can be determined, denoted as the third RSRP. These K second RSRPs can be obtained based on K consecutive delayed Doppler frames, K periodically occurring delayed Doppler frames, or arbitrary (discontinuous) K delayed Doppler frames. The mean can be a linear average or a weighted average, where different weights are assigned when averaging the K second RSRPs.

[0262] Optionally, the terminal determines the first RSRP corresponding to a target port within a target time unit, including:

[0263] The terminal determines the first delayed Doppler region corresponding to the first signal received from the target port within the target time unit. The first delayed Doppler region includes the mapping region of the first bearer information in the delayed Doppler domain and the guard band region.

[0264] The terminal determines the RSRP corresponding to the first delayed Doppler region as the first RSRP corresponding to the target port within the target time unit.

[0265] Optionally, when the terminal determines the first RSRP, that is, when it determines the first RSRP corresponding to a target port within a target time unit, the target time unit can be any time unit corresponding to the first signal, and the target port can be any port used to transmit the transmitted signal corresponding to the first signal.

[0266] Optionally, when the terminal determines the first RSRP, that is, when it determines the first RSRP corresponding to a target port within a target time unit, it may first determine the first delayed Doppler region corresponding to the first signal received from the target port within the target time unit.

[0267] Optionally, the first delayed Doppler region includes the mapping region of the first bearer information in the delayed Doppler domain and the guard band region;

[0268] Optionally, the terminal may determine the RSRP corresponding to the first delayed Doppler region and use it as the first RSRP corresponding to the target port within the target time unit.

[0269] Optionally, the first delayed Doppler region can be determined jointly by the set of initial subscript values ​​in the delay direction and the set of initial subscript values ​​in the Doppler direction.

[0270] If the first delayed Doppler region is exactly the same as the mapping region and guard band region of the first signal, then the indication of the first delayed Doppler region can reuse the indication of the first signal and its guard band, without needing a separate indication. If the first delayed Doppler region is not exactly the same as the mapping region and guard band region of the first signal (for example, it is larger than the mapping region and guard band region of the first signal), then the transmitting end can indicate the first delayed Doppler region to the terminal through indication information.

[0271] Optionally, the terminal determines the RSRP corresponding to the first delayed Doppler region, including:

[0272] The terminal determines the RSRP corresponding to the first delayed Doppler region in the delayed Doppler domain.

[0273] Optionally, the terminal can determine the RSRP corresponding to the first delayed Doppler region in the delayed Doppler domain and use it as the first RSRP corresponding to the target port within the target time unit.

[0274] Optionally, the terminal determines the RSRP corresponding to the first delayed Doppler region in the delayed Doppler domain, including:

[0275] The terminal determines a first signal power, which is the Zth largest signal power in descending order of the signal power of all signals in the first delayed Doppler region, or the first signal power is the signal power of all signals in the first delayed Doppler region that is higher than a first power threshold.

[0276] The terminal determines the linear average value of the first signal power as the RSRP corresponding to the first delayed Doppler region;

[0277] Z is a positive integer.

[0278] Optionally, when the terminal determines the RSRP corresponding to the first delayed Doppler region in the delayed Doppler domain, it can first determine the Z signal powers that are ranked from largest to smallest among all the signal powers in the first delayed Doppler region, and take the Z signal powers as the first signal power. Then, it can determine the linear average of the Z signal powers, that is, determine the linear average of the first signal power, as the RSRP corresponding to the first delayed Doppler region.

[0279] Optionally, when the terminal determines the RSRP corresponding to the first delayed Doppler region in the delayed Doppler domain, it can first determine the signal power of all signals in the first delayed Doppler region that is higher than a first power threshold, and take these signal powers that are higher than the first power threshold as the first signal power. Then, it can determine the linear average value of these signal powers that are higher than the first power threshold, that is, determine the linear average value of the first signal power as the RSRP corresponding to the first delayed Doppler region.

[0280] Optionally, the terminal determines the linear average value of the first signal power, including:

[0281] The terminal determines a first sum of the power of the first signal;

[0282] The terminal divides the first sum by the first coefficient to obtain the linear average value of the first signal power;

[0283] The first coefficient is any one of the following or is proportional to any one of the following:

[0284] The total number of delayed Doppler resource grids within the first delayed Doppler region;

[0285] Z;

[0286] The number of signals in the first delayed Doppler region whose signal power is higher than a first power threshold;

[0287] Total number of resource grids in the delay direction;

[0288] Total number of resource gratings in the Doppler direction; or

[0289] Total number of delayed Doppler resource rasters.

[0290] Optionally, when determining the linear average value of the first signal power, the terminal may first determine the first sum of the first signal power; and divide the first sum by the first coefficient to obtain the linear average value of the first signal power.

[0291] For example, in the received signal in the delayed Doppler domain (i.e., the first signal), the sum of the power of the Z signals with the highest power in the first delayed Doppler region can be calculated, and then this sum of power can be divided by a coefficient r, denoted as the first RSRP. Here, the coefficient r is the first coefficient, and the purpose of dividing by the coefficient r is to perform a linear average.

[0292] For example, in the received signal in the delayed Doppler domain (i.e., the first signal), the sum of the power of signals with power higher than the first power threshold in the first delayed Doppler region can be calculated, and then this sum of power can be divided by a coefficient w, denoted as the first RSRP. Here, the coefficient w is the first coefficient, and the purpose of dividing by the coefficient w is to perform a linear average.

[0293] Optionally, the first coefficient is predefined by the protocol, indicated by the communication peer, or determined by the terminal itself.

[0294] Optionally, when the receiving end is a terminal and the communication peer (sender) is a network-side device, the first coefficient is indicated by the communication peer through one or more of the following:

[0295] MAC CE;

[0296] RRC message;

[0297] NAS message;

[0298] Manage and orchestrate messages;

[0299] User face data;

[0300] DCI information;

[0301] System Information Block (SIB);

[0302] Layer 1 signaling of the Physical Downlink Control Channel (PDCCH);

[0303] Information about the Physical Downlink Shared Channel (PDSCH);

[0304] MSG 2 information of the Physical Random Access Channel (PRACH);

[0305] MSG 4 information of the Physical Random Access Channel (PRACH); or

[0306] MSG B information for the Physical Random Access Channel (PRACH).

[0307] Optionally, when the receiving end is a terminal and the communication peer (sending end) is a terminal, the first coefficient is indicated by the communication peer through one or more of the following:

[0308] Xn interface signaling;

[0309] PC5 interface signaling;

[0310] Information from the Physical Side Link Control Channel (PSCCH);

[0311] Information about the Physical Side Link Shared Channel (PSSCH);

[0312] Information from the Physical Side Link Broadcast Channel (PSBCH);

[0313] Information about the Physical Straight-Through Link Discovery Channel (PSDCH); or

[0314] Information from the Physical Straight-Through Link Feedback Channel (PSFCH).

[0315] Optionally, the first coefficient may be equal to (or proportional to) the total number of delayed Doppler resource gratings in the first delayed Doppler region;

[0316] Optionally, the first coefficient may be equal to N (or proportional to N), or equal to the number of signals with power higher than the first power threshold in the first delayed Doppler region (or proportional to that number);

[0317] Optionally, the first coefficient can be equal to (or proportional to) the total number of resource grids in the delay direction;

[0318] Optionally, the first coefficient can be equal to (or proportional to) the total number of resource grids in the Doppler direction;

[0319] Optionally, the first coefficient can be equal to (or proportional to) the total number of delayed Doppler resource rasters.

[0320] Optionally, the terminal determines the RSRP corresponding to the first delayed Doppler region, including:

[0321] The terminal determines the RSRP corresponding to the first delayed Doppler region in the time-frequency domain.

[0322] Optionally, the terminal can determine the RSRP corresponding to the first delayed Doppler region in the time-frequency domain and use it as the first RSRP corresponding to the target port within the target time unit.

[0323] Optionally, the terminal determines the RSRP corresponding to the first delayed Doppler region in the time-frequency domain, including:

[0324] The terminal determines a second signal in the first delayed Doppler region from the first signal received from the target port within the target time unit. The second signal is either the first Q signals in the first delayed Doppler region that are sorted by signal power from largest to smallest, or the second signal is a signal in the first delayed Doppler region whose signal power is higher than a second power threshold.

[0325] The terminal converts the second signal to the time-frequency domain to obtain the third signal;

[0326] The terminal determines the linear average value of the signal power of the third signal as the RSRP corresponding to the first delayed Doppler region;

[0327] Q is a positive integer.

[0328] Optionally, when the terminal determines the RSRP corresponding to the first delayed Doppler region in the time-frequency domain, it can first determine the first Q signals (which can be called the second signals) of all signals in the first delayed Doppler region in descending order of signal power. The first Q signals (the second signals) can be converted to the time-frequency domain to obtain the third signal. Then, the linear average value of the signal power of the third signal can be determined as the RSRP corresponding to the first delayed Doppler region.

[0329] Optionally, when the terminal determines the RSRP corresponding to the first delayed Doppler region in the time-frequency domain, it can first determine the signal with signal power higher than the second power threshold (which can be called the second signal) among all signals in the first delayed Doppler region, and convert the signal with signal power higher than the second power threshold (the second signal) to the time-frequency domain to obtain the third signal, and then determine the linear average value of the signal power of the third signal as the RSRP corresponding to the first delayed Doppler region;

[0330] Q is a positive integer.

[0331] Optionally, the terminal determines the linear average value of the signal power of the third signal, including:

[0332] The terminal determines a second sum of the signal power of the third signal;

[0333] The terminal divides the second sum by the second coefficient to obtain the linear average value of the signal power of the third signal;

[0334] The second coefficient is any one of the following or is proportional to any one of the following:

[0335] The total number of delayed Doppler resource grids within the first delayed Doppler region;

[0336] Q;

[0337] The number of signals in the first delayed Doppler region whose signal power is higher than the second power threshold;

[0338] Total number of resource grids in the delay direction;

[0339] Total number of resource gratings in the Doppler direction; or

[0340] Total number of delayed Doppler resource rasters.

[0341] Optionally, when the terminal can determine the linear average value of the signal power of the third signal, it can determine the second sum of the signal power of the third signal, and then divide the second sum by the second coefficient to obtain the linear average value of the signal power of the third signal, which is used as the RSRP corresponding to the first delayed Doppler region, and then as the first RSRP.

[0342] For example, in the received signal in the delayed Doppler domain, the Q signals with the highest power in the first delayed Doppler region are selected and called the second signal. These are then converted to the time-frequency domain to obtain the third signal. The total power of the third signal is calculated, and this total power is divided by a coefficient r to obtain the RSRP corresponding to the first delayed Doppler region, denoted as the first RSRP. The selection operation means retaining the selected signal and setting all other unselected signals to zero. Here, the coefficient r is the second coefficient, and dividing by the coefficient r performs a linear averaging.

[0343] For example, in the received signal in the delayed Doppler domain, signals with power higher than a second power threshold within the first delayed Doppler region are selected and called the second signal. These signals are then converted to the time-frequency domain to obtain the third signal. The total power of the third signal is calculated, and this total power is divided by a coefficient w to obtain the RSRP corresponding to the first delayed Doppler region, denoted as the first RSRP. The selection operation means retaining the selected signal and setting all other unselected signals to zero. Here, the coefficient w is the second coefficient, and dividing by the coefficient w performs a linear averaging.

[0344] Optionally, the second coefficient is predefined by the protocol, indicated by the communication peer, or determined by the terminal itself.

[0345] Optionally, when the receiving end is a terminal and the communication peer is a network-side device, the second coefficient is indicated by the communication peer through one or more of the following:

[0346] MAC CE;

[0347] RRC message;

[0348] NAS message;

[0349] Manage and orchestrate messages;

[0350] User face data;

[0351] DCI information;

[0352] System Information Block (SIB);

[0353] Layer 1 signaling of the Physical Downlink Control Channel (PDCCH);

[0354] Information about the Physical Downlink Shared Channel (PDSCH);

[0355] MSG 2 information of the Physical Random Access Channel (PRACH);

[0356] MSG 4 information of the Physical Random Access Channel (PRACH); or

[0357] MSG B information for the Physical Random Access Channel (PRACH).

[0358] Optionally, when the receiving end is a terminal and the communication peer is a terminal, the second coefficient is indicated by the communication peer through one or more of the following:

[0359] Xn interface signaling;

[0360] PC5 interface signaling;

[0361] Information from the Physical Side Link Control Channel (PSCCH);

[0362] Information about the Physical Side Link Shared Channel (PSSCH);

[0363] Information from the Physical Side Link Broadcast Channel (PSBCH);

[0364] Information about the Physical Straight-Through Link Discovery Channel (PSDCH); or

[0365] Information from the Physical Straight-Through Link Feedback Channel (PSFCH).

[0366] Optionally, the second coefficient can be equal to (or proportional to) the total number of delayed Doppler resource gratings in the first delayed Doppler region;

[0367] Optionally, the second coefficient may be equal to M (or proportional to M), or equal to the number of signals with power higher than the second power threshold in the first delayed Doppler region (or proportional to that number);

[0368] Optionally, the second coefficient can be equal to (or proportional to) the total number of resource grids in the delay direction;

[0369] Optionally, the second coefficient can be equal to (or proportional to) the total number of resource gratings in the Doppler direction;

[0370] Optionally, the second coefficient can be equal to (or proportional to) the total number of delayed Doppler resource rasters.

[0371] Optionally, the terminal determines the delayed Doppler domain signal strength indication (RSSI) corresponding to the first signal, including:

[0372] The terminal determines a first RSSI corresponding to a target time unit, where the first RSSI is the RSSI of the first signal received by the terminal within the target time unit;

[0373] The terminal uses the first RSSI corresponding to the target time unit as the delayed Doppler domain signal strength indication RSSI corresponding to the first signal.

[0374] Optionally, when determining the delayed Doppler domain signal strength indicator (RSSI) corresponding to the first signal, the terminal may first determine the RSSI of the first signal received by the terminal within a target time unit as the first RSSI corresponding to the target time unit, and then use the first RSSI corresponding to the target time unit as the delayed Doppler domain signal strength indicator (RSSI) corresponding to the first signal.

[0375] Optionally, the power counted by the first RSSI may include the total power of all the following signals: the first signal, the data signal, and noise and interference superimposed on the above signals.

[0376] Optionally, the terminal determines the delayed Doppler domain signal strength indication (RSSI) corresponding to the first signal, including:

[0377] The terminal determines a first RSSI corresponding to a target time unit, where the first RSSI is the RSSI of the first signal received by the terminal within the target time unit;

[0378] The terminal determines the second RSSI based on the first RSSI corresponding to the multiple target time units respectively;

[0379] The terminal uses the second RSSI as the delayed Doppler domain signal strength indicator RSSI corresponding to the first signal.

[0380] Optionally, the terminal can first determine multiple first RSSIs, which correspond to different target time units. After determining the first RSSIs corresponding to the multiple target time units, the terminal can determine the second RSSI based on the first RSSIs corresponding to the multiple target time units. Then, the second RSSI can be used as the delayed Doppler domain signal strength indicator RSSI corresponding to the first signal.

[0381] For example, the terminal can first determine four first RSSIs, which correspond to different target time units, namely target time units t1, t2, t3, and t4. The first first RSSI corresponds to target time unit t1, the second first RSSI corresponds to target time unit t2, the third first RSSI corresponds to target time unit t3, and the fourth first RSSI corresponds to target time unit t4. Then, based on these four first RSSIs, the second RSSI can be calculated and obtained, and the second RSSI can be used as the delayed Doppler domain signal strength indicator RSSI corresponding to the first signal.

[0382] Optionally, the delayed Doppler domain received power RSRP can be defined as the first RSSI or the second RSSI mentioned above, used as quality information of the received signal, and can also be used to calculate the delayed Doppler domain received quality.

[0383] Optionally, the operation of calculating a second RSSI from multiple first RSSIs is also called filtering.

[0384] The delayed Doppler domain signal strength indication RSSI can be defined as either the first RSSI or the second RSSI mentioned above.

[0385] The delayed Doppler domain signal strength indication can be defined as either the first RSSI or the second RSSI mentioned above.

[0386] Optionally, the plurality of target time units may be continuous, periodic, or aperiodic and discontinuous.

[0387] Optionally, the target time unit may be a delayed Doppler frame, a delayed Doppler subframe, or other time units suitable for the delayed Doppler domain, which is not limited in this application embodiment.

[0388] Optionally, taking a delayed Doppler frame as the target time unit, the mean of the K first RSSIs can be calculated, or the maximum or minimum value among the K first RSSIs can be determined and denoted as the second RSSI. These K first RSSIs can be obtained based on K consecutive delayed Doppler frames, K periodically occurring delayed Doppler frames, or any (discontinuous) K delayed Doppler frames. The mean can be a linear average or a weighted average, where different weights are assigned when averaging the K first RSSIs.

[0389] Optionally, the terminal determines a first RSSI corresponding to a target time unit, including:

[0390] The terminal determines a second delayed Doppler region corresponding to the first signal received in the target time unit, and the second delayed Doppler region includes the first delayed Doppler region;

[0391] The terminal determines the RSSI corresponding to the second delayed Doppler region as the first RSSI corresponding to the target time unit.

[0392] Optionally, when determining the first RSSI corresponding to a target time unit, the terminal may first determine the second delayed Doppler region corresponding to the first signal received in the target time unit.

[0393] Optionally, the second delayed Doppler region corresponding to the first signal received by the target time unit can completely cover the first delayed Doppler region corresponding to the first signal received by the target time unit;

[0394] Optionally, the second delayed Doppler region refers to a delayed Doppler region used to measure signal quality, which includes multiple delays and Dopplers. All resource grids of a delayed Doppler frame can be used as the second delayed Doppler region.

[0395] Optionally, the second delayed Doppler region includes the aforementioned first signal.

[0396] Optionally, the indication of the second delayed Doppler region can be indicated by dedicated signaling.

[0397] Optionally, the terminal determines the RSSI corresponding to the second delayed Doppler region, including:

[0398] The terminal determines the RSSI corresponding to the second delayed Doppler region in the delayed Doppler domain.

[0399] Optionally, the terminal can determine the RSSI corresponding to the second delayed Doppler region in the delayed Doppler domain.

[0400] Optionally, the terminal determines the RSSI corresponding to the second delayed Doppler region in the delayed Doppler domain, including:

[0401] The terminal determines the linear average value of all signal power within the second delayed Doppler region as the RSSI corresponding to the second delayed Doppler region.

[0402] Optionally, when the terminal determines the RSSI corresponding to the second delayed Doppler region in the delayed Doppler domain, the terminal may first determine the linear average value of all signal power in the second delayed Doppler region and use the linear average value as the RSSI corresponding to the second delayed Doppler region.

[0403] Optionally, the terminal determines the linear average of all signal power within the second delayed Doppler region, including:

[0404] The terminal determines a third sum of all signal power within the second delayed Doppler region;

[0405] The terminal divides the third sum by the third coefficient to obtain the linear average value of all signal power in the second delayed Doppler region;

[0406] The third coefficient is any one of the following or is proportional to any one of the following:

[0407] The total number of delayed Doppler resource grids within the second delayed Doppler region;

[0408] Total number of resource grids in the delay direction;

[0409] Total number of resource gratings in the Doppler direction; or

[0410] Total number of delayed Doppler resource rasters.

[0411] Optionally, when the terminal determines the RSSI corresponding to the second delayed Doppler region in the delayed Doppler domain, it needs to determine the linear average value of all signal power in the second delayed Doppler region. This can be achieved by first calculating the sum of the received signal power at all grid points in the second delayed Doppler region (i.e., the third sum of all signal power in the second delayed Doppler region), then dividing the sum of power by the third coefficient to obtain the linear average value of all signal power in the second delayed Doppler region, and then using this linear average value as the RSSI corresponding to the second delayed Doppler region, which can be used as the first RSSI.

[0412] Optionally, the third coefficient is predefined by the protocol, indicated by the communication peer, or determined by the terminal itself.

[0413] Optionally, when the receiving end is a terminal and the communication peer is a network-side device, the third coefficient is indicated by the communication peer through one or more of the following:

[0414] MAC CE;

[0415] RRC message;

[0416] NAS message;

[0417] Manage and orchestrate messages;

[0418] User face data;

[0419] DCI information;

[0420] System Information Block (SIB);

[0421] Layer 1 signaling of the Physical Downlink Control Channel (PDCCH);

[0422] Information about the Physical Downlink Shared Channel (PDSCH);

[0423] MSG 2 information of the Physical Random Access Channel (PRACH);

[0424] MSG 4 information of the Physical Random Access Channel (PRACH); or

[0425] MSG B information for the Physical Random Access Channel (PRACH).

[0426] Optionally, when the receiving end is a terminal and the communication peer is a terminal, the third coefficient is indicated by the communication peer through one or more of the following:

[0427] Xn interface signaling;

[0428] PC5 interface signaling;

[0429] Information from the Physical Side Link Control Channel (PSCCH);

[0430] Information about the Physical Side Link Shared Channel (PSSCH);

[0431] Information from the Physical Side Link Broadcast Channel (PSBCH);

[0432] Information about the Physical Straight-Through Link Discovery Channel (PSDCH); or

[0433] Information from the Physical Straight-Through Link Feedback Channel (PSFCH).

[0434] Optionally, the third coefficient can be equal to (or proportional to) the total number of delayed Doppler resource gratings in the first delayed Doppler region;

[0435] Optionally, the third coefficient can be equal to (or proportional to) the total number of resource grids in the delay direction;

[0436] Optionally, the third coefficient can be equal to (or proportional to) the total number of resource grids in the Doppler direction;

[0437] Alternatively, the third coefficient can be equal to (or proportional to) the total number of delayed Doppler resource rasters.

[0438] Optionally, the terminal determines the RSSI corresponding to the second delayed Doppler region, including:

[0439] The terminal determines the RSSI corresponding to the second delayed Doppler region in the time-frequency domain.

[0440] Optionally, the terminal can also determine the RSSI corresponding to the second delayed Doppler region in the time-frequency domain.

[0441] Optionally, the terminal determines the RSSI corresponding to the second delayed Doppler region in the time-frequency domain, including:

[0442] The terminal determines a fourth signal within the second delayed Doppler region from the first signal received from the target time unit;

[0443] The terminal converts the fourth signal to the time-frequency domain to obtain the fifth signal;

[0444] The terminal determines the linear average value of the signal power of the fifth signal as the RSSI corresponding to the second delayed Doppler region.

[0445] Optionally, the terminal may first determine the fourth signal in the second delayed Doppler region from the first signal received from the target time unit, and convert the fourth signal to the time-frequency domain to obtain the fifth signal. Then, the terminal may determine the linear average value of the signal power of the fifth signal and use it as the RSSI corresponding to the second delayed Doppler region. The terminal may then use the RSSI corresponding to the second delayed Doppler region as the first RSSI.

[0446] Optionally, the terminal determines the linear average value of the signal power of the fifth signal, including:

[0447] The terminal determines the fourth sum of the signal power of the fifth signal;

[0448] The terminal divides the fourth sum by the fourth coefficient to obtain the linear average value of the signal power of the fifth signal;

[0449] The fourth coefficient is any one of the following or is proportional to any one of the following:

[0450] The total number of delayed Doppler resource grids within the second delayed Doppler region;

[0451] Total number of resource grids in the delay direction;

[0452] Total number of resource gratings in the Doppler direction; or

[0453] Total number of delayed Doppler resource rasters.

[0454] Optionally, when the terminal determines the RSSI corresponding to the second delayed Doppler region in the time-frequency domain, it needs to determine the linear average value of the signal power of the fifth signal. It can first calculate the fourth sum of the signal power of the fifth signal, and then divide the fourth sum by the fourth coefficient to obtain the linear average value of the signal power of the fifth signal, and use it as the RSSI corresponding to the second delayed Doppler region. Then, the RSSI corresponding to the second delayed Doppler region can be used as the first RSSI.

[0455] Optionally, in the received signal (first signal) in the delayed Doppler domain, a signal (fourth signal) in the second delayed Doppler region can be selected, converted to the time-frequency domain to obtain the fifth signal, the total power of the fifth signal is calculated, and then the total power is divided by a coefficient t, denoted as the first RSSI. The selection refers to retaining the selected signal and setting all other unselected signals to zero. The coefficient t is the fourth coefficient.

[0456] Optionally, the fourth coefficient can be equal to (or proportional to) the number of delay direction grids contained in the second delayed Doppler region;

[0457] Optionally, the fourth coefficient may be equal to (or proportional to) the number of Doppler direction gratings contained in the second delayed Doppler region, or the fourth coefficient may be equal to (or proportional to) the total number of gratings contained in the second delayed Doppler region, or the coefficient t may be equal to (or proportional to) the total number of delay direction gratings in the delayed Doppler domain.

[0458] Optionally, the fourth coefficient may be equal to (or proportional to) the total number of grid cells in the Doppler direction of the delayed Doppler domain, or the fourth coefficient may be equal to (or proportional to) the total number of grid cells in the delayed Doppler domain.

[0459] Optionally, in this embodiment, the RSSI of OFDM can be averaged to the granularity of one OFDM symbol, encompassing all subcarriers within the measurement band of one OFDM symbol. Assuming a system with a delay number M and a Doppler number N, the corresponding time-frequency domain resource grid size is a region consisting of M subcarriers and N OFDM symbols. By deriving a fourth coefficient, whose magnitude is inversely proportional to M or N, the corresponding OFDM RSSI can be guaranteed.

[0460] Optionally, the fourth coefficient is predefined by the protocol, indicated by the communication peer, or determined by the terminal itself.

[0461] Optionally, when the receiving end is a terminal and the communication peer is a network-side device, the fourth coefficient is indicated by the communication peer through one or more of the following:

[0462] MAC CE;

[0463] RRC message;

[0464] NAS message;

[0465] Manage and orchestrate messages;

[0466] User face data;

[0467] DCI information;

[0468] System Information Block (SIB);

[0469] Layer 1 signaling of the Physical Downlink Control Channel (PDCCH);

[0470] Information about the Physical Downlink Shared Channel (PDSCH);

[0471] MSG 2 information of the Physical Random Access Channel (PRACH);

[0472] MSG 4 information of the Physical Random Access Channel (PRACH); or

[0473] MSG B information for the Physical Random Access Channel (PRACH).

[0474] Optionally, when the receiving end is a terminal and the communication peer is a terminal, the fourth coefficient is indicated by the communication peer through one or more of the following:

[0475] Xn interface signaling;

[0476] PC5 interface signaling;

[0477] Information from the Physical Side Link Control Channel (PSCCH);

[0478] Information about the Physical Side Link Shared Channel (PSSCH);

[0479] Information from the Physical Side Link Broadcast Channel (PSBCH);

[0480] Information about the Physical Straight-Through Link Discovery Channel (PSDCH); or

[0481] Information from the Physical Straight-Through Link Feedback Channel (PSFCH).

[0482] Optionally, the first bearer information includes any one or more of the following:

[0483] Synchronization signal, reference signal, or signal used to measure cross-link interference (CLI).

[0484] Optionally, the first bearer information may be a synchronization signal, a reference signal, or a signal used to measure cross-link interference (CLI).

[0485] Optionally, the first bearer information may be a synchronization signal and a PBCH block (SSB);

[0486] For example, the first bearer information may be a Channel State Information Reference Signal (CSI-RS), a Sounding Reference Signal (SRS), a Positioning Reference Signal (PRS), a sidelink reference signal or synchronization signal (such as the DMRS of PSBCH, the DMRS of PSCCH, the DMRS of PSSCH), a signal used to measure cross-link interference (CLI), SSB, etc.

[0487] Optionally, if the first bearer information is CSI RS, then the calculated delayed Doppler domain received power RSRP is the delayed Doppler domain CSI RSRP;

[0488] Optionally, if the first bearer information is SRS, then the calculated delayed Doppler domain received power RSRP is the delayed Doppler domain SRS RSRP;

[0489] Optionally, if the first bearer information is PRS, then the calculated delayed Doppler domain received power RSRP is the delayed Doppler domain PRS RSRP.

[0490] Optionally, if the first bearer information is the DMRS of the PSBCH, then the calculated delayed Doppler domain received power RSRP is the delayed Doppler domain PSBCH RSRP.

[0491] Optionally, if the first bearer information is the DMRS of the PSCCH, then the calculated delayed Doppler domain received power RSRP is the delayed Doppler domain PSCCH RSRP.

[0492] Optionally, if the first bearer information is the DMRS of the PSSCH, then the calculated delayed Doppler domain received power RSRP is the delayed Doppler domain PSSCH RSRP.

[0493] Optionally, if the first bearer information is SSB, then the calculated delayed Doppler domain received power RSRP is the delayed Doppler domain SS RSRP.

[0494] Optionally, if the first bearer information is CSI RS, then the calculated delayed Doppler domain signal strength indicator RSSI is the delayed Doppler domain CSI RSSI;

[0495] Optionally, if the first bearer information is SRS, then the calculated delayed Doppler domain signal strength indicator RSSI is the delayed Doppler domain SRS RSSI;

[0496] Optionally, if the first bearer information is PRS, then the calculated delayed Doppler domain signal strength indicator RSSI is the delayed Doppler domain PRS RSSI;

[0497] Optionally, if the first bearer information is DMRS, then the calculated delayed Doppler domain signal strength indicator RSSI is the delayed Doppler domain PSBCH RSSI;

[0498] Optionally, if the first bearer information is DMRS, then the calculated delayed Doppler domain signal strength indicator RSSI is the delayed Doppler domain PSCCH RSSI;

[0499] Optionally, if the first bearer information is DMRS, then the calculated delayed Doppler domain signal strength indicator RSSI is the delayed Doppler domain PSSCH RSSI;

[0500] Optionally, if the first bearer information is SSB, then the calculated delayed Doppler domain signal strength indicator RSSI is the delayed Doppler domain SS RSSI;

[0501] Optionally, if the first bearer information is a CLI measurement signal, then the calculated delayed Doppler domain signal strength indicator RSSI is the delayed Doppler domain CLI RSSI.

[0502] Optionally, if the first delayed Doppler region contains a CSI RS (the first bearer information is the CSI RS), then the calculated delayed Doppler domain received power RSRP is the delayed Doppler domain CSI RSRP.

[0503] Optionally, if the first delayed Doppler region contains the SRS (the first bearer information is the SRS), then the calculated delayed Doppler domain received power RSRP is the delayed Doppler domain SRS RSRP.

[0504] Optionally, if the first delayed Doppler region contains a PRS (the first bearer information is the PRS), then the calculated delayed Doppler domain received power RSRP is the delayed Doppler domain PRS RSRP.

[0505] Optionally, if the first delayed Doppler region contains the DMRS of the PSBCH (the first bearer information is the DMRS of the PSBCH), then the calculated delayed Doppler domain received power RSRP is the delayed Doppler domain PSBCH RSRP.

[0506] Optionally, if the first delayed Doppler region contains the DMRS of the PSCCH (the first bearer information is the DMRS of the PSCCH), then the calculated delayed Doppler domain received power RSRP is the delayed Doppler domain PSCCH RSRP.

[0507] Optionally, if the first delayed Doppler region contains the DMRS of the PSSCH (the first bearer information is the DMRS of the PSSCH), then the calculated delayed Doppler domain received power RSRP is the delayed Doppler domain PSSCH RSRP.

[0508] Optionally, if the first delayed Doppler region contains an SSB (the first bearer information is the SSB), then the calculated delayed Doppler domain received power RSRP is the delayed Doppler domain SS RSRP.

[0509] Optionally, if the second delayed Doppler region contains a CSI RS (the first bearer information is the CSI RS), then the calculated delayed Doppler domain signal strength indicator RSSI is the delayed Doppler domain CSI RSSI.

[0510] Optionally, if the second delayed Doppler region contains the SRS (the first bearer information is the SRS), then the calculated delayed Doppler domain signal strength indicator RSSI is the delayed Doppler domain SRS RSSI.

[0511] Optionally, if the second delayed Doppler region contains a PRS (the first bearer information is the PRS), then the calculated delayed Doppler domain signal strength indicator RSSI is the delayed Doppler domain PRS RSSI.

[0512] Optionally, if the second delayed Doppler region contains the DMRS of the PSBCH (the first bearer information is the DMRS), then the calculated delayed Doppler domain signal strength indicator RSSI is the delayed Doppler domain PSBCH RSSI.

[0513] Optionally, if the second delayed Doppler region contains the DMRS of the PSCCH (the first bearer information is the DMRS), then the calculated delayed Doppler domain signal strength indicator RSSI is the delayed Doppler domain PSCCH RSSI.

[0514] Optionally, if the second delayed Doppler region contains the DMRS of the PSSCH (the first bearer information is the DMRS), then the calculated delayed Doppler domain signal strength indicator RSSI is the delayed Doppler domain PSSCH RSSI.

[0515] Optionally, if the second delayed Doppler region contains an SSB (the first bearer information is the SSB), then the calculated delayed Doppler domain signal strength indicator RSSI is the delayed Doppler domain SS RSSI.

[0516] Optionally, if the second delayed Doppler region contains a CLI measurement signal (the first bearer information is the CLI measurement signal), then the calculated delayed Doppler domain signal strength indicator RSSI is the delayed Doppler domain CLI RSSI.

[0517] Optionally, the RSRP being measured can be indicated by dedicated signaling as to which signal the RSRP is, such as the RSRP of CSI-RS, the RSRP of the synchronization signal (i.e., SS RSRP), SRS RSRP, PRS RSRP, CLI RSRP, or the RSRP of the reference signal of the sidelink (e.g., PSBCH RSRP, PSCCH RSRP, PSSCH RSRP).

[0518] Optionally, based on the delayed Doppler domain received power RSRP, cell selection and reselection, power control, etc., can be performed.

[0519] Optionally, the method further includes:

[0520] The terminal sends first information to the sending end, the first information including at least one of the following:

[0521] The quality information of the first signal in the delayed Doppler domain;

[0522] The quality level corresponding to the quality information;

[0523] Quantization encoding corresponding to the quality information; or

[0524] The magnitude relationship between the quality information and historical quality information.

[0525] Optionally, the terminal can feed back the quality information corresponding to the delayed Doppler domain obtained in any of the foregoing embodiments to the transmitting end. That is, it can feed back any one or more of the following to the transmitting end: the delayed Doppler domain received power (RSRP) corresponding to the first signal, the delayed Doppler domain signal strength indication (RSSI) corresponding to the first signal, the delayed Doppler domain reference signal received quality (RSRQ) corresponding to the first signal, and the delayed Doppler domain signal and interference evaluation index corresponding to the first signal.

[0526] Optionally, the terminal may feed back the original information mentioned above, or information obtained after transformation based on the above information, such as quantization encoding, classification of levels, and size relationship with previously reported information.

[0527] Optionally, the terminal can send the first information through the transmitting end to realize the feedback of the quality information corresponding to the delayed Doppler domain;

[0528] Optionally, the first information may include any one or any combination of the following:

[0529] The quality information corresponding to the first signal in the delayed Doppler domain; or

[0530] The quality level corresponding to the quality information; or

[0531] Quantization encoding corresponding to the quality information; or

[0532] The magnitude relationship between the quality information and historical quality information.

[0533] Optionally, when the terminal sends feedback to the sending end, if the receiving end is a terminal and the sending end is a network-side device, the feedback can be achieved through the following signals or signaling:

[0534] Layer 1 signaling of the Physical Uplink Control Channel (PUCCH);

[0535] MSG 1 information of the Physical Random Access Channel (PRACH);

[0536] MSG 3 information of the Physical Random Access Channel (PRACH);

[0537] MSGA information of the Physical Random Access Channel (PRACH); or

[0538] Information about the Physical Uplink Shared Channel (PUSCH).

[0539] Optionally, when a terminal sends feedback to a sending end, if the receiving end is a terminal and the sending end is another terminal, the feedback can be achieved through the following signals or signaling:

[0540] Xn interface signaling;

[0541] PC5 interface signaling;

[0542] Information from the Physical Side Link Control Channel (PSCCH);

[0543] Information about the Physical Side Link Shared Channel (PSSCH);

[0544] Information from the Physical Side Link Broadcast Channel (PSBCH);

[0545] Information about the Physical Straight-Through Link Discovery Channel (PSDCH); or

[0546] Information from the Physical Straight-Through Link Feedback Channel (PSFCH).

[0547] Optionally, when the sending end is a network-side device, the first information is carried on any one or more of the following:

[0548] Layer 1 signaling of the Physical Uplink Control Channel (PUCCH);

[0549] MSG 1 information of the Physical Random Access Channel (PRACH);

[0550] MSG 3 information of the Physical Random Access Channel (PRACH);

[0551] MSGA information of the Physical Random Access Channel (PRACH); or

[0552] Information about the Physical Uplink Shared Channel (PUSCH).

[0553] Optionally, when the sending end is a terminal, the first information is carried on any one or more of the following:

[0554] Xn interface signaling;

[0555] PC5 interface signaling;

[0556] Information from the Physical Side Link Control Channel (PSCCH);

[0557] Information about the Physical Side Link Shared Channel (PSSCH);

[0558] Information from the Physical Side Link Broadcast Channel (PSBCH);

[0559] Information about the Physical Straight-Through Link Discovery Channel (PSDCH); or

[0560] Information from the Physical Straight-Through Link Feedback Channel (PSFCH).

[0561] In this embodiment, the terminal determines the quality information corresponding to the first signal in the delayed Doppler domain after receiving the first signal in the delayed Doppler domain. This clarifies the method for obtaining the quality information corresponding to the signal in the delayed Doppler domain, which facilitates the execution of services such as power control and cell handover, and improves the communication quality of the terminal.

[0562] In one embodiment, Figure 7 This is a schematic diagram of the first delayed Doppler region in a single-port configuration provided in an embodiment of this application, as shown below. Figure 7 As shown, taking a delayed Doppler frame (i.e., the target time unit) composed of M grids in the delay direction and N grids in the Doppler direction (each grid containing one signal) as an example, when the transmitter sends a reference signal pulse, reference signal sequence, or synchronization signal sequence, due to the channel-crossing characteristics of the delayed Doppler domain signal, the reference signal pulse, reference signal sequence, or synchronization signal sequence will spread to a certain range of delayed Doppler region on the delayed Doppler frame at the receiving end. The received signal power is calculated within this delayed Doppler region and denoted as the first RSRP. Wherein, Figure 7 A system with M=18 and N=12 is described, where the grid region with a slash in the middle is defined as the first delayed Doppler region. Figure 7 The first delayed Doppler region (i.e., a rectangular area from 7 to 12 in the delay direction and from 4 to 9 in the Doppler direction) is defined appropriately. By reasonably defining the first delayed Doppler region (e.g., including the mapping area of ​​the first bearer information in the delayed Doppler domain and the guard band area), it can be ensured that the reference signal pulse, reference signal sequence, or synchronization signal sequence transmitted by the transmitting end will not fall on the grid outside this region after passing through the channel. The first RSRP can represent the RSRP of a port calculated on a delayed Doppler frame. The first RSRP can be calculated by any of the following methods (a) to (d):

[0563] Calculations in the delayed Doppler domain:

[0564] (a) Calculate the sum of the powers of the Q signals with the highest power in the first delayed Doppler region corresponding to the first signal, and then divide this sum of power by a coefficient r, denoted as the first RSRP. Dividing by the coefficient r performs a linear averaging. Figure 7 In the first delayed Doppler region, the rectangular area from 7 to 12 in the delay direction and from 4 to 9 in the Doppler direction is the first delayed Doppler region. Within this region, the Q signals with the highest power are identified, and the sum of the power of these Q signals is calculated and divided by the coefficient r, which is denoted as the first RSRP.

[0565] (b) Calculate the sum of the powers of signals with power higher than the first threshold within the first delayed Doppler region corresponding to the first signal, and then divide this sum of power by a coefficient w, denoted as the first RSRP. Dividing by the coefficient r performs a linear averaging. Figure 7In the rectangular region between delay direction 7 to 12 and Doppler direction 4 to 9, find all signals with power higher than the first threshold. Assuming there are a total of C signals with power higher than the first threshold, calculate the sum of the power of these C signals, and then divide the sum of the power by the coefficient w, which is denoted as the first RSRP.

[0566] Calculation in the time-frequency domain:

[0567] (c) In the received signal in the delayed Doppler domain, select the Q signals with the highest power in the first delayed Doppler region corresponding to the first signal. The selection operation means retaining the selected signals and setting all other unselected signals to zero. Figure 7 In the diagram, the rectangular region encompassing delay direction 7 to 12 and Doppler direction 4 to 9 is the first delayed Doppler region. Within this region, identify the Q signals with the highest power (the second signal). Set all other signals in the delayed Doppler domain besides these Q signals to zero, and then perform an inverse sine Fourier transform to obtain the time-frequency domain signal, denoted as the third signal. It is noteworthy that the third signal has values ​​on all M×N resource grids in the time-frequency domain. Calculate the sum of the power of the third signal on all M×N resource grids in the time-frequency domain, and then divide this sum by the coefficient r, denoted as the first RSRP.

[0568] (d) In the received signal in the delayed Doppler domain, select the signal with a power higher than a first threshold within the first delayed Doppler region corresponding to the first signal. The selection operation means retaining the selected signal and setting all other unselected signals to zero. Figure 7 In the first step, within a rectangular region extending from delay direction 7 to 12 and Doppler direction 4 to 9, identify all signals with power exceeding the first threshold. Assume a total of C signals (the second signal) have power exceeding the first threshold. Set all signals in the delayed Doppler domain except for these C signals to zero, and then perform an inverse sine Fourier transform to obtain the time-frequency domain signal, denoted as the third signal. Notably, the third signal has values ​​on all M×N resource grids in the time-frequency domain. Calculate the sum of the power of the second signal on all M×N resource grids in the time-frequency domain, and then divide this sum by the coefficient w, denoted as the first RSRP.

[0569] In one embodiment, taking the differentiation of P ports using non-overlapping delay Doppler resources as an example, the second RSRP calculation method can be:

[0570] When P ports are distinguished by non-overlapping delayed Doppler resources, P first delayed Doppler regions need to be defined on the delayed Doppler frame at the receiving end, corresponding to the P ports. Figure 8 This is a schematic diagram of the first delayed Doppler region in a two-port configuration provided in an embodiment of this application; as shown... Figure 8As shown, a system with M=18, N=12, and P=2 is described. The grid region with slashes represents the first delayed Doppler region corresponding to the first port. Figure 8 The rectangular region in the middle (i.e., the region in the delay direction 3 to 8 and the Doppler direction 4 to 9) and the grid region with the rhomboid mesh are the first delay-Doppler region corresponding to the second port. Figure 8 The region in question is a rectangular area defined by delay directions 11 to 16 and Doppler directions 4 to 9. The first RSRP corresponding to each first port is calculated; subsequently, the mean of these P first RSRPs can be calculated, denoted as the second RSRP. This mean can be a linear mean or a weighted mean. Alternatively, the maximum value of these P first RSRPs can be calculated, denoted as the second RSRP. Or, the minimum value of these P first RSRPs can be calculated, denoted as the second RSRP.

[0571] In one embodiment, the first RSSI can be calculated as follows:

[0572] Calculate the sum of the received signal power at all grid points within the second delayed Doppler region, and then divide this sum by the coefficient t (the third coefficient), denoted as the first RSSI. The power can be calculated either in the delayed Doppler domain or by selecting the signal within the second delayed Doppler region, transforming it to the time-frequency domain, and then calculating the power.

[0573] The second delayed Doppler region can refer to a delayed Doppler region used to measure signal quality, which includes multiple delays and Dopplers. All resource grids of a delayed Doppler frame can be used as the second delayed Doppler region.

[0574] by Figure 7 Taking a delayed Doppler frame as an example, all M×N=18×12=216 grid regions can be considered as the second delayed Doppler region. The sum of the received signal power at all grid points within this second delayed Doppler region is calculated and denoted as the first RSSI. Similarly, for Figure 8 The delayed Doppler frame can also be used as the second delayed Doppler region, which consists of all M×N = 18×12 = 216 grid areas. The sum of the received signal power at all grid points within this second delayed Doppler region is calculated and denoted as the first RSSI. In these two cases, the first RSSI will be different due to the different number of ports. The second delayed Doppler region can also be a subset of the delayed Doppler grids, meaning the number of grids in the second delayed Doppler region can be less than M×N.

[0575] In one embodiment, the second RSSI can be calculated as follows:

[0576] Similar to the calculation of the third RSRP, the average of K first RSSIs can be calculated, denoted as the second RSSI. These K first RSSIs can be obtained based on K consecutive delayed Doppler frames, K periodically occurring delayed Doppler frames, or any (discontinuous) K delayed Doppler frames. The average can be a linear average or a weighted average, where different weights are assigned when averaging the K first RSSIs. The operation of calculating the second RSSI from the K first RSSIs is also called filtering.

[0577] Optionally, the delayed Doppler domain signal strength indication can be defined as either the first RSSI or the second RSSI mentioned above.

[0578] Optionally, the delayed Doppler domain signal strength indication RSSI can be defined as either the first RSSI or the second RSSI mentioned above.

[0579] In one embodiment, the delay Doppler domain signal and interference evaluation index can be calculated as follows:

[0580]

[0581] The delayed Doppler domain interference power is obtained through interference measurement. The RSRP measurement and the interference power measurement can be performed within the same frame or in different frames.

[0582] When RSRP measurement and interference power measurement are performed within the same frame, similar to the first delayed Doppler region of RSRP, interference measurement also requires a third delayed Doppler region. The sum of interference power is calculated within this third delayed Doppler region and denoted as the delayed Doppler domain interference power. The aforementioned first and third delayed Doppler regions must not overlap. Figure 9 This is one of the schematic diagrams of the first signal provided in the embodiments of this application. Figure 9 The diagram shows the terminal signal used to measure RSRP and interference power within the same frame; for example... Figure 9 As shown, taking a system with M=18 and N=12 as an example, the grid area with slashes represents the first delayed Doppler region corresponding to the RSRP measurement. Figure 9 The rectangular region in the middle (i.e., the region with delay direction 3 to 8 and Doppler direction 4 to 9) and the grid region with prismatic mesh are the third delay Doppler region corresponding to the interference power measurement. Figure 9 The rectangular region in the middle, i.e., the delay direction from 11 to 16 and the Doppler direction from 4 to 9.

[0583] When RSRP measurement and interference power measurement are performed within different frames, the sum of interference power needs to be calculated within the third delayed Doppler region, denoted as the delayed Doppler domain interference power. The first and third delayed Doppler regions may or may not overlap. Figure 10 This is a second schematic diagram of the first signal provided in the embodiments of this application; Figure 11 This is the third schematic diagram of the first signal provided in the embodiments of this application; Figure 10 and Figure 11 The terminal signals are shown when RSRP and interference power measurements are implemented in different frames, such as... Figure 10 and Figure 11 As shown, the case where the first and third delayed Doppler regions completely overlap is described. Since the two regions have been distinguished by different frames, the measurement of RSRP and the measurement of interference power will not affect each other even if they completely overlap.

[0584] In this embodiment, the terminal determines the quality information corresponding to the first signal in the delayed Doppler domain after receiving the first signal in the delayed Doppler domain. This clarifies the method for obtaining the quality information corresponding to the signal in the delayed Doppler domain, which facilitates the execution of services such as power control and cell handover, and improves the communication quality of the terminal.

[0585] The quality information determination method provided in this application can be executed by a quality information determination device. This application uses an example of a quality information determination device executing the quality information determination method to illustrate the quality information determination device provided in this application.

[0586] Figure 12 This is a schematic diagram of the structure of the quality information determination device provided in the embodiments of this application, as shown below. Figure 12 As shown, the quality information determination device 1200 includes: a receiving module 1210 and a determining module 1220; wherein:

[0587] The receiving module 1210 is used to receive a first signal, the transmitting signal corresponding to the first signal being a signal that maps the first bearer information in the delayed Doppler domain and then converts it to the time domain for transmission;

[0588] The determining module 1220 is used to determine the quality information of the first signal in the delayed Doppler domain.

[0589] In this embodiment, the terminal determines the quality information corresponding to the first signal in the delayed Doppler domain after receiving the first signal in the delayed Doppler domain. This clarifies the method for obtaining the quality information corresponding to the signal in the delayed Doppler domain, which facilitates the execution of services such as power control and cell handover, and improves the communication quality of the terminal.

[0590] Optionally, the determining module 1220 is specifically used for any one or more of the following:

[0591] Determine the delayed Doppler domain received power RSRP corresponding to the first signal;

[0592] Determine the delayed Doppler domain signal strength indicator (RSSI) corresponding to the first signal;

[0593] Determine the delayed Doppler domain reception quality (RSRQ) corresponding to the first signal; or

[0594] Determine the delayed Doppler domain signal and interference evaluation index corresponding to the first signal.

[0595] Optionally, the determining module 1220 is specifically used for:

[0596] After determining the delayed Doppler domain received power (RSRP) corresponding to the first signal and the terminal determining the delayed Doppler domain signal strength indication (RSSI) corresponding to the first signal, the delayed Doppler domain received quality (RSRQ) corresponding to the first signal is determined based on the delayed Doppler domain received power (RSRP) and the delayed Doppler domain signal strength indication (RSSI) corresponding to the first signal.

[0597] Optionally, the determining module 1220 is specifically used for:

[0598] The formula for delayed Doppler domain reception quality is: Determine the delayed Doppler domain reception quality (RSRQ) corresponding to the first signal;

[0599] Where L is any real number.

[0600] Optionally, the determining module 1220 is specifically used for:

[0601] The delayed Doppler domain interference power is determined based on the interference measurement signal corresponding to the first signal;

[0602] After determining the delayed Doppler domain received power (RSRP) corresponding to the first signal, the delayed Doppler domain signal and interference evaluation index corresponding to the first signal is determined based on the delayed Doppler domain received power (RSRP) corresponding to the first signal and the delayed Doppler domain interference power.

[0603] Optionally, the determining module 1220 is specifically used for:

[0604] Through the formula: Determine the delayed Doppler domain signal and interference evaluation index corresponding to the first signal;

[0605] Where T is any real number.

[0606] Optionally, the determining module 1220 is specifically used for:

[0607] Determine the first RSRP corresponding to a target port within a target time unit;

[0608] The first RSRP is taken as the delayed Doppler domain received power RSRP corresponding to the first signal;

[0609] Wherein, the first RSRP is the RSRP of the first signal received by the terminal from the target port within the target time unit.

[0610] Optionally, the determining module 1220 is specifically used for:

[0611] Determine a first RSRP corresponding to a target port within a target time unit, wherein the first RSRP is the RSRP of the first signal received by the terminal from the target port within the target time unit;

[0612] Based on the first RSRP corresponding to the multiple target ports within the target time unit, determine the second RSRP corresponding to the target time unit;

[0613] The second RSRP is used as the delayed Doppler domain received power RSRP corresponding to the first signal.

[0614] Optionally, the determining module 1220 is specifically used for:

[0615] Determine a first RSRP corresponding to a target port within a target time unit, wherein the first RSRP is the RSRP of the first signal received by the terminal from the target port within the target time unit;

[0616] Based on the first RSRP corresponding to the multiple target ports within the target time unit, determine the second RSRP corresponding to the target time unit;

[0617] The third RSRP is determined based on the second RSRP corresponding to each of the multiple target time units;

[0618] The third RSRP is taken as the delayed Doppler domain received power RSRP corresponding to the first signal.

[0619] Optionally, the determining module 1220 is specifically used for any of the following:

[0620] The linear average of the first RSRP corresponding to each of the multiple target ports within the target time unit is determined as the second RSRP corresponding to the target time unit; or

[0621] The weighted average of the first RSRPs corresponding to the multiple target ports within the target time unit is determined as the second RSRP corresponding to the target time unit; or

[0622] The largest first RSRP among the first RSRPs corresponding to the multiple target ports within the target time unit is determined as the second RSRP corresponding to the target time unit; or

[0623] The smallest first RSRP among the first RSRPs corresponding to the multiple target ports within the target time unit is determined as the second RSRP corresponding to the target time unit.

[0624] Optionally, the first bearer information corresponding to the transmission signals transmitted by the multiple target ports is transmitted through non-overlapping delayed Doppler resources.

[0625] Optionally, the first bearer information corresponding to the transmission signals transmitted by the plurality of target ports respectively is a sequence of mutually orthogonal signals.

[0626] Optionally, the determining module 1220 is specifically used for any of the following:

[0627] The linear average of the second RSRP corresponding to each of the plurality of target time units is determined as the third RSRP corresponding to the target time unit; or

[0628] The weighted average of the second RSRPs corresponding to the plurality of target time units is determined as the third RSRP corresponding to the target time unit; or

[0629] The largest second RSRP among the second RSRPs corresponding to the plurality of target time units is determined as the third RSRP corresponding to the target time unit; or

[0630] The smallest second RSRP among the multiple target time units is determined as the third RSRP corresponding to the target time unit.

[0631] Optionally, the determining module 1220 is specifically used for:

[0632] Determine a first RSRP corresponding to a target port within a target time unit, wherein the first RSRP is the RSRP of the first signal received by the terminal from the target port within the target time unit;

[0633] Based on the first RSRP corresponding to the target port in the multiple target time units, the fourth RSRP is determined;

[0634] The fourth RSRP is taken as the delayed Doppler domain received power RSRP corresponding to the first signal.

[0635] Optionally, the determining module 1220 is specifically used for any of the following:

[0636] The linear average of the first RSRP corresponding to the target port in each of the multiple target time units is determined as the fourth RSRP corresponding to the target time unit; or

[0637] The weighted average of the first RSRPs corresponding to the target port in the multiple target time units is determined as the fourth RSRP corresponding to the target time unit; or

[0638] The largest first RSRP among the first RSRPs corresponding to the target port in the multiple target time units is determined as the fourth RSRP corresponding to the target time unit; or

[0639] The first RSRP with the smallest value among the first RSRPs corresponding to the target port in the multiple target time units is determined as the fourth RSRP corresponding to the target time unit.

[0640] Optionally, the plurality of target time units may be continuous, periodic, or aperiodic and discontinuous.

[0641] Optionally, the determining module 1220 is specifically used for:

[0642] Determine the first delayed Doppler region corresponding to the first signal received from the target port within the target time unit. The first delayed Doppler region includes the mapping region of the first bearer information in the delayed Doppler domain and the guard band region.

[0643] The RSRP corresponding to the first delayed Doppler region is determined as the first RSRP corresponding to the target port within the target time unit.

[0644] Optionally, the determining module 1220 is specifically used for:

[0645] The RSRP corresponding to the first delayed Doppler region is determined in the delayed Doppler domain.

[0646] Optionally, the determining module 1220 is specifically used for:

[0647] Determine the first signal power, which is the Zth largest signal power in the first delayed Doppler region, sorted from largest to smallest; or the first signal power is the signal power in the first delayed Doppler region that is higher than the first power threshold.

[0648] The linear average value of the first signal power is determined as the RSRP corresponding to the first delayed Doppler region;

[0649] Z is a positive integer.

[0650] Optionally, the determining module 1220 is specifically used for:

[0651] Determine the first sum of the power of the first signal;

[0652] Divide the first sum by the first coefficient to obtain the linear average value of the first signal power;

[0653] The first coefficient is any one of the following or is proportional to any one of the following:

[0654] The total number of delayed Doppler resource grids within the first delayed Doppler region;

[0655] Z;

[0656] The number of signals in the first delayed Doppler region whose signal power is higher than a first power threshold;

[0657] Total number of resource grids in the delay direction;

[0658] Total number of resource gratings in the Doppler direction; or

[0659] Total number of delayed Doppler resource rasters.

[0660] Optionally, the determining module 1220 is specifically used for:

[0661] The RSRP corresponding to the first delayed Doppler region is determined in the time-frequency domain.

[0662] Optionally, the determining module 1220 is specifically used for:

[0663] A second signal is determined from the first signal received from the target port within the target time unit, which is located in the first delayed Doppler region. The second signal is either the first Q signals in the first delayed Doppler region that are sorted by signal power from largest to smallest, or the second signal is the signal in the first delayed Doppler region whose signal power is higher than a second power threshold.

[0664] The second signal is converted to the time-frequency domain to obtain the third signal;

[0665] The linear average value of the signal power of the third signal is determined as the RSRP corresponding to the first delayed Doppler region;

[0666] Q is a positive integer.

[0667] Optionally, the determining module 1220 is specifically used for:

[0668] Determine the second sum of the signal power of the third signal;

[0669] Divide the second sum by the second coefficient to obtain the linear average value of the signal power of the third signal;

[0670] The second coefficient is any one of the following or is proportional to any one of the following:

[0671] The total number of delayed Doppler resource grids within the first delayed Doppler region;

[0672] Q;

[0673] The number of signals in the first delayed Doppler region whose signal power is higher than the second power threshold;

[0674] Total number of resource grids in the delay direction;

[0675] Total number of resource gratings in the Doppler direction; or

[0676] Total number of delayed Doppler resource rasters.

[0677] Optionally, the determining module 1220 is specifically used for:

[0678] A first RSSI corresponding to a target time unit is determined, wherein the first RSSI is the RSSI of the first signal received by the terminal within the target time unit;

[0679] The first RSSI corresponding to the target time unit is used as the delayed Doppler domain signal strength indicator RSSI corresponding to the first signal.

[0680] Optionally, the determining module 1220 is specifically used for:

[0681] A first RSSI corresponding to a target time unit is determined, wherein the first RSSI is the RSSI of the first signal received by the terminal within the target time unit;

[0682] The terminal determines the second RSSI based on the first RSSI corresponding to the multiple target time units respectively;

[0683] The terminal uses the second RSSI as the delayed Doppler domain signal strength indicator RSSI corresponding to the first signal.

[0684] Optionally, the plurality of target time units may be continuous, periodic, or aperiodic and discontinuous.

[0685] Optionally, the determining module 1220 is specifically used for:

[0686] Determine a second delayed Doppler region corresponding to the first signal received in the target time unit, wherein the second delayed Doppler region includes the first delayed Doppler region;

[0687] The RSSI corresponding to the second delayed Doppler region is determined as the first RSSI corresponding to the target time unit.

[0688] Optionally, the determining module 1220 is specifically used for:

[0689] The RSSI corresponding to the second delayed Doppler region is determined in the delayed Doppler domain.

[0690] Optionally, the determining module 1220 is specifically used for:

[0691] The linear average value of all signal power within the second delayed Doppler region is determined as the RSSI corresponding to the second delayed Doppler region.

[0692] Optionally, the determining module 1220 is specifically used for:

[0693] Determine the third sum of all signal power within the second delayed Doppler region;

[0694] Dividing the third sum by the third coefficient yields the linear average of all signal power within the second delayed Doppler region;

[0695] The third coefficient is any one of the following or is proportional to any one of the following:

[0696] The total number of delayed Doppler resource grids within the second delayed Doppler region;

[0697] Total number of resource grids in the delay direction;

[0698] Total number of resource gratings in the Doppler direction; or

[0699] Total number of delayed Doppler resource rasters.

[0700] Optionally, the determining module 1220 is specifically used for:

[0701] The RSSI corresponding to the second delayed Doppler region is determined in the time-frequency domain.

[0702] Optionally, the determining module 1220 is specifically used for:

[0703] A fourth signal is determined from the first signal received from the target time unit within the second delayed Doppler region;

[0704] The fourth signal is converted to the time-frequency domain to obtain the fifth signal;

[0705] The linear average value of the signal power of the fifth signal is determined as the RSSI corresponding to the second delayed Doppler region.

[0706] Optionally, the determining module 1220 is specifically used for:

[0707] Determine the fourth sum of the signal power of the fifth signal;

[0708] Divide the fourth sum by the fourth coefficient to obtain the linear average value of the signal power of the fifth signal;

[0709] The fourth coefficient is any one of the following or is proportional to any one of the following:

[0710] The total number of delayed Doppler resource grids within the second delayed Doppler region;

[0711] Total number of resource grids in the delay direction;

[0712] Total number of resource gratings in the Doppler direction; or

[0713] Total number of delayed Doppler resource rasters.

[0714] Optionally, the first bearer information includes any one or more of the following:

[0715] Synchronization signal, reference signal, or signal used to measure cross-link interference (CLI).

[0716] Optionally, the device further includes:

[0717] The sending module is configured to send first information to the sending end, the first information including at least one of the following:

[0718] The quality information of the first signal in the delayed Doppler domain;

[0719] The quality level corresponding to the quality information;

[0720] Quantization encoding corresponding to the quality information; or

[0721] The magnitude relationship between the quality information and historical quality information.

[0722] In this embodiment, the terminal determines the quality information corresponding to the first signal in the delayed Doppler domain after receiving the first signal in the delayed Doppler domain. This clarifies the method for obtaining the quality information corresponding to the signal in the delayed Doppler domain, which facilitates the execution of services such as power control and cell handover, and improves the communication quality of the terminal.

[0723] The quality information determination device in this application embodiment 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 other devices besides a terminal. For example, the terminal can include, but is not limited to, the type of terminal 11 listed above; other devices can be servers, network attached storage (NAS), etc., and this application embodiment does not specifically limit the type.

[0724] The quality information determination device provided in this application embodiment can achieve... Figures 6 to 11 The various processes implemented in the method embodiments achieve the same technical effect, and will not be described again here to avoid repetition.

[0725] Optional, Figure 13 This is a schematic diagram of the structure of the communication device provided in the embodiments of this application, such as... Figure 13 As shown in the illustration, this application also provides a communication device 1300, including a processor 1301 and a memory 1302. The memory 1302 stores a program or instructions that can run on the processor 1301. For example, when the communication device 1300 is a terminal, the program or instructions executed by the processor 1301 implement the various steps of the above-described quality information determination method embodiment and achieve the same technical effect. When the communication device 1300 is a network-side device, the program or instructions executed by the processor 1301 implement the various steps of the above-described quality information determination method embodiment and achieve the same technical effect. To avoid repetition, further details are omitted here.

[0726] This application embodiment also provides a terminal, including a processor and a communication interface, the communication interface being used for:

[0727] Receive a first signal, the transmission signal corresponding to the first signal is a signal that maps the first bearer information into the delayed Doppler domain and then converts it to the time domain for transmission;

[0728] The processor is used for:

[0729] The quality information corresponding to the first signal in the delayed Doppler domain is determined. This terminal embodiment corresponds to the above-described terminal method embodiment; all implementation processes and methods of the above method embodiments can be applied to this terminal embodiment and achieve the same technical effect. Specifically, Figure 14A schematic diagram of the hardware structure of a terminal to implement an embodiment of this application.

[0730] The terminal 1400 includes, but is not limited to, at least some of the following components: radio frequency unit 1401, network module 1402, audio output unit 1403, input unit 1404, sensor 1405, display unit 1406, user input unit 1407, interface unit 1408, memory 1409, and processor 1410.

[0731] Those skilled in the art will understand that the terminal 1400 may also include a power supply (such as a battery) for supplying power to various components. The power supply may be logically connected to the processor 1410 through a power management system, thereby enabling functions such as managing charging, discharging, and power consumption through the power management system. Figure 14 The terminal structure shown does not constitute a limitation on the terminal. The terminal may include more or fewer components than shown, or combine certain components, or have different component arrangements, which will not be elaborated here.

[0732] It should be understood that, in this embodiment, the input unit 1404 may include a graphics processing unit (GPU) 14041 and a microphone 14042. The GPU 14041 processes image data of still images or videos obtained by an image capture device (such as a camera) in video capture mode or image capture mode. The display unit 1406 may include a display panel 14061, which may be configured in the form of a liquid crystal display, an organic light-emitting diode, etc. The user input unit 1407 includes a touch panel 14071 and at least one of other input devices 14072. The touch panel 14071 is also called a touch screen. The touch panel 14071 may include a touch detection device and a touch controller. Other input devices 14072 may include, but are not limited to, physical keyboards, function keys (such as volume control buttons, power buttons, etc.), trackballs, mice, joysticks, etc., which will not be described in detail here.

[0733] In this embodiment, after receiving downlink data from the network-side device, the radio frequency unit 1401 can transmit it to the processor 1410 for processing; in addition, the radio frequency unit 1401 can send uplink data to the network-side device. Typically, the radio frequency unit 1401 includes, but is not limited to, antennas, amplifiers, transceivers, couplers, low-noise amplifiers, duplexers, etc.

[0734] The memory 1409 can be used to store software programs or instructions and various data. The memory 1409 may primarily include a first storage area for storing programs or instructions and a second storage area for storing data. The first storage area may store the operating system, application programs or instructions required for at least one function (such as sound playback function, image playback function, etc.). Furthermore, the memory 1409 may include volatile memory or non-volatile memory, or both. The non-volatile memory may be read-only memory (ROM), programmable read-only memory (PROM), erasable programmable read-only memory (EPROM), electrically erasable programmable read-only memory (EEPROM), or flash memory. Volatile memory can be random access memory (RAM), static random access memory (SRAM), dynamic random access memory (DRAM), synchronous dynamic random access memory (SDRAM), double data rate synchronous dynamic random access memory (DDRSDRAM), enhanced synchronous dynamic random access memory (ESDRAM), synchronous link dynamic random access memory (SLDRAM), and direct memory bus RAM (DRRAM). The memory 1409 in this embodiment includes, but is not limited to, these and any other suitable types of memory.

[0735] Processor 1410 may include one or more processing units; optionally, processor 1410 integrates an application processor and a modem processor, wherein the application processor mainly handles operations involving the operating system, user interface, and applications, and the modem processor mainly handles wireless communication signals, such as a baseband processor. It is understood that the aforementioned modem processor may also not be integrated into processor 1410.

[0736] The radio frequency unit 1401 is used for:

[0737] Receive a first signal, the transmission signal corresponding to the first signal is a signal that maps the first bearer information into the delayed Doppler domain and then converts it to the time domain for transmission;

[0738] Processor 1410 is used for:

[0739] The determining module 1420 is used to determine the quality information of the first signal in the delayed Doppler domain.

[0740] In this embodiment of the application, by determining the quality information corresponding to the first signal in the delayed Doppler domain after receiving the first signal in the delayed Doppler domain, the method of obtaining the quality information corresponding to the signal in the delayed Doppler domain is clarified, which facilitates the execution of services such as power control and cell handover, and improves the communication quality of the terminal.

[0741] Alternatively, the processor 1410 is specifically used for any one or more of the following:

[0742] Determine the delayed Doppler domain received power RSRP corresponding to the first signal;

[0743] Determine the delayed Doppler domain signal strength indicator (RSSI) corresponding to the first signal;

[0744] Determine the delayed Doppler domain reception quality (RSRQ) corresponding to the first signal; or

[0745] Determine the delayed Doppler domain signal and interference evaluation index corresponding to the first signal.

[0746] Optionally, the processor 1410 is specifically used for:

[0747] After determining the delayed Doppler domain received power (RSRP) corresponding to the first signal and the terminal determining the delayed Doppler domain signal strength indication (RSSI) corresponding to the first signal, the delayed Doppler domain received quality (RSRQ) corresponding to the first signal is determined based on the delayed Doppler domain received power (RSRP) and the delayed Doppler domain signal strength indication (RSSI) corresponding to the first signal.

[0748] Optionally, the processor 1410 is specifically used for:

[0749] The formula for delayed Doppler domain reception quality is: Determine the delayed Doppler domain reception quality (RSRQ) corresponding to the first signal;

[0750] Where L is any real number.

[0751] Optionally, the processor 1410 is specifically used for:

[0752] The delayed Doppler domain interference power is determined based on the interference measurement signal corresponding to the first signal;

[0753] After determining the delayed Doppler domain received power (RSRP) corresponding to the first signal, the delayed Doppler domain signal and interference evaluation index corresponding to the first signal is determined based on the delayed Doppler domain received power (RSRP) corresponding to the first signal and the delayed Doppler domain interference power.

[0754] Optionally, the processor 1410 is specifically used for:

[0755] Through the formula: Determine the delayed Doppler domain signal and interference evaluation index corresponding to the first signal;

[0756] Where T is any real number.

[0757] Optionally, the processor 1410 is specifically used for:

[0758] Determine the first RSRP corresponding to a target port within a target time unit;

[0759] The first RSRP is taken as the delayed Doppler domain received power RSRP corresponding to the first signal;

[0760] Wherein, the first RSRP is the RSRP of the first signal received by the terminal from the target port within the target time unit.

[0761] Optionally, the processor 1410 is specifically used for:

[0762] Determine a first RSRP corresponding to a target port within a target time unit, wherein the first RSRP is the RSRP of the first signal received by the terminal from the target port within the target time unit;

[0763] Based on the first RSRP corresponding to the multiple target ports within the target time unit, determine the second RSRP corresponding to the target time unit;

[0764] The second RSRP is used as the delayed Doppler domain received power RSRP corresponding to the first signal.

[0765] Optionally, the processor 1410 is specifically used for:

[0766] Determine a first RSRP corresponding to a target port within a target time unit, wherein the first RSRP is the RSRP of the first signal received by the terminal from the target port within the target time unit;

[0767] Based on the first RSRP corresponding to the multiple target ports within the target time unit, determine the second RSRP corresponding to the target time unit;

[0768] The third RSRP is determined based on the second RSRP corresponding to each of the multiple target time units;

[0769] The third RSRP is taken as the delayed Doppler domain received power RSRP corresponding to the first signal.

[0770] Alternatively, the processor 1410 is specifically used for any of the following:

[0771] The linear average of the first RSRP corresponding to each of the multiple target ports within the target time unit is determined as the second RSRP corresponding to the target time unit; or

[0772] The weighted average of the first RSRPs corresponding to the multiple target ports within the target time unit is determined as the second RSRP corresponding to the target time unit; or

[0773] The largest first RSRP among the first RSRPs corresponding to the multiple target ports within the target time unit is determined as the second RSRP corresponding to the target time unit; or

[0774] The smallest first RSRP among the first RSRPs corresponding to the multiple target ports within the target time unit is determined as the second RSRP corresponding to the target time unit.

[0775] Optionally, the first bearer information corresponding to the transmission signals transmitted by the multiple target ports is transmitted through non-overlapping delayed Doppler resources.

[0776] Optionally, the first bearer information corresponding to the transmission signals transmitted by the plurality of target ports respectively is a sequence of mutually orthogonal signals.

[0777] Alternatively, the processor 1410 is specifically used for any of the following:

[0778] The linear average of the second RSRP corresponding to each of the plurality of target time units is determined as the third RSRP corresponding to the target time unit; or

[0779] The weighted average of the second RSRPs corresponding to the plurality of target time units is determined as the third RSRP corresponding to the target time unit; or

[0780] The largest second RSRP among the second RSRPs corresponding to the plurality of target time units is determined as the third RSRP corresponding to the target time unit; or

[0781] The smallest second RSRP among the multiple target time units is determined as the third RSRP corresponding to the target time unit.

[0782] Optionally, the processor 1410 is specifically used for:

[0783] Determine a first RSRP corresponding to a target port within a target time unit, wherein the first RSRP is the RSRP of the first signal received by the terminal from the target port within the target time unit;

[0784] Based on the first RSRP corresponding to the target port in the multiple target time units, the fourth RSRP is determined;

[0785] The fourth RSRP is taken as the delayed Doppler domain received power RSRP corresponding to the first signal.

[0786] Alternatively, the processor 1410 is specifically used for any of the following:

[0787] The linear average of the first RSRP corresponding to the target port in each of the multiple target time units is determined as the fourth RSRP corresponding to the target time unit; or

[0788] The weighted average of the first RSRPs corresponding to the target port in the multiple target time units is determined as the fourth RSRP corresponding to the target time unit; or

[0789] The largest first RSRP among the first RSRPs corresponding to the target port in the multiple target time units is determined as the fourth RSRP corresponding to the target time unit; or

[0790] The first RSRP with the smallest value among the first RSRPs corresponding to the target port in the multiple target time units is determined as the fourth RSRP corresponding to the target time unit.

[0791] Optionally, the plurality of target time units may be continuous, periodic, or aperiodic and discontinuous.

[0792] Optionally, the processor 1410 is specifically used for:

[0793] Determine the first delayed Doppler region corresponding to the first signal received from the target port within the target time unit. The first delayed Doppler region includes the mapping region of the first bearer information in the delayed Doppler domain and the guard band region.

[0794] The RSRP corresponding to the first delayed Doppler region is determined as the first RSRP corresponding to the target port within the target time unit.

[0795] Optionally, the processor 1410 is specifically used for:

[0796] The RSRP corresponding to the first delayed Doppler region is determined in the delayed Doppler domain.

[0797] Optionally, the processor 1410 is specifically used for:

[0798] Determine the first signal power, which is the Zth largest signal power in the first delayed Doppler region, sorted from largest to smallest; or the first signal power is the signal power in the first delayed Doppler region that is higher than the first power threshold.

[0799] The linear average value of the first signal power is determined as the RSRP corresponding to the first delayed Doppler region;

[0800] Z is a positive integer.

[0801] Optionally, the processor 1410 is specifically used for:

[0802] Determine the first sum of the power of the first signal;

[0803] Divide the first sum by the first coefficient to obtain the linear average value of the first signal power;

[0804] The first coefficient is any one of the following or is proportional to any one of the following:

[0805] The total number of delayed Doppler resource grids within the first delayed Doppler region;

[0806] Z;

[0807] The number of signals in the first delayed Doppler region whose signal power is higher than a first power threshold;

[0808] Total number of resource grids in the delay direction;

[0809] Total number of resource gratings in the Doppler direction; or

[0810] Total number of delayed Doppler resource rasters.

[0811] Optionally, the processor 1410 is specifically used for:

[0812] The RSRP corresponding to the first delayed Doppler region is determined in the time-frequency domain.

[0813] Optionally, the processor 1410 is specifically used for:

[0814] A second signal is determined from the first signal received from the target port within the target time unit, which is located in the first delayed Doppler region. The second signal is either the first Q signals in the first delayed Doppler region that are sorted by signal power from largest to smallest, or the second signal is the signal in the first delayed Doppler region whose signal power is higher than a second power threshold.

[0815] The second signal is converted to the time-frequency domain to obtain the third signal;

[0816] The linear average value of the signal power of the third signal is determined as the RSRP corresponding to the first delayed Doppler region;

[0817] Q is a positive integer.

[0818] Optionally, the processor 1410 is specifically used for:

[0819] Determine the second sum of the signal power of the third signal;

[0820] Divide the second sum by the second coefficient to obtain the linear average value of the signal power of the third signal;

[0821] The second coefficient is any one of the following or is proportional to any one of the following:

[0822] The total number of delayed Doppler resource grids within the first delayed Doppler region;

[0823] Q;

[0824] The number of signals in the first delayed Doppler region whose signal power is higher than the second power threshold;

[0825] Total number of resource grids in the delay direction;

[0826] Total number of resource gratings in the Doppler direction; or

[0827] Total number of delayed Doppler resource rasters.

[0828] Optionally, the processor 1410 is specifically used for:

[0829] A first RSSI corresponding to a target time unit is determined, wherein the first RSSI is the RSSI of the first signal received by the terminal within the target time unit;

[0830] The first RSSI corresponding to the target time unit is used as the delayed Doppler domain signal strength indicator RSSI corresponding to the first signal.

[0831] Optionally, the processor 1410 is specifically used for:

[0832] A first RSSI corresponding to a target time unit is determined, wherein the first RSSI is the RSSI of the first signal received by the terminal within the target time unit;

[0833] The second RSSI is determined based on the first RSSI corresponding to each of the multiple target time units;

[0834] The second RSSI is used as the delayed Doppler domain signal strength indicator RSSI corresponding to the first signal.

[0835] Optionally, the plurality of target time units may be continuous, periodic, or aperiodic and discontinuous.

[0836] Optionally, the processor 1410 is specifically used for:

[0837] Determine a second delayed Doppler region corresponding to the first signal received in the target time unit, wherein the second delayed Doppler region includes the first delayed Doppler region;

[0838] The RSSI corresponding to the second delayed Doppler region is determined as the first RSSI corresponding to the target time unit.

[0839] Optionally, the processor 1410 is specifically used for:

[0840] The RSSI corresponding to the second delayed Doppler region is determined in the delayed Doppler domain.

[0841] Optionally, the processor 1410 is specifically used for:

[0842] The linear average value of all signal power within the second delayed Doppler region is determined as the RSSI corresponding to the second delayed Doppler region.

[0843] Optionally, the processor 1410 is specifically used for:

[0844] Determine the third sum of all signal power within the second delayed Doppler region;

[0845] Dividing the third sum by the third coefficient yields the linear average of all signal power within the second delayed Doppler region;

[0846] The third coefficient is any one of the following or is proportional to any one of the following:

[0847] The total number of delayed Doppler resource grids within the second delayed Doppler region;

[0848] Total number of resource grids in the delay direction;

[0849] Total number of resource gratings in the Doppler direction; or

[0850] Total number of delayed Doppler resource rasters.

[0851] Optionally, the processor 1410 is specifically used for:

[0852] The RSSI corresponding to the second delayed Doppler region is determined in the time-frequency domain.

[0853] Optionally, the processor 1410 is specifically used for:

[0854] A fourth signal is determined from the first signal received from the target time unit within the second delayed Doppler region;

[0855] The fourth signal is converted to the time-frequency domain to obtain the fifth signal;

[0856] The linear average value of the signal power of the fifth signal is determined as the RSSI corresponding to the second delayed Doppler region.

[0857] Optionally, the processor 1410 is specifically used for:

[0858] Determine the fourth sum of the signal power of the fifth signal;

[0859] Divide the fourth sum by the fourth coefficient to obtain the linear average value of the signal power of the fifth signal;

[0860] The fourth coefficient is any one of the following or is proportional to any one of the following:

[0861] The total number of delayed Doppler resource grids within the second delayed Doppler region;

[0862] Total number of resource grids in the delay direction;

[0863] Total number of resource gratings in the Doppler direction; or

[0864] Total number of delayed Doppler resource rasters.

[0865] Optionally, the first bearer information includes any one or more of the following:

[0866] Synchronization signal, reference signal, or signal used to measure cross-link interference (CLI).

[0867] Optionally, the processor 1410 is specifically used for:

[0868] The first information is sent to the sending end, the first information including at least one of the following:

[0869] The quality information of the first signal in the delayed Doppler domain;

[0870] The quality level corresponding to the quality information;

[0871] Quantization encoding corresponding to the quality information; or

[0872] The magnitude relationship between the quality information and historical quality information.

[0873] In this embodiment, the terminal determines the quality information corresponding to the first signal in the delayed Doppler domain after receiving the first signal in the delayed Doppler domain. This clarifies the method for obtaining the quality information corresponding to the signal in the delayed Doppler domain, which facilitates the execution of services such as power control and cell handover, and improves the communication quality of the terminal.

[0874] This application also provides a readable storage medium storing a program or instructions. When the program or instructions are executed by a processor, they implement the various processes of the above-described quality information determination method embodiments and achieve the same technical effects. To avoid repetition, they will not be described again here.

[0875] The processor is the processor in the terminal described in the above embodiments. The readable storage medium includes computer-readable storage media, such as computer read-only memory (ROM), random access memory (RAM), magnetic disk, or optical disk.

[0876] This application embodiment also provides a chip, which includes a processor and a communication interface. The communication interface is coupled to the processor. The processor is used to run programs or instructions to implement the various processes of the above-described quality information determination method embodiment, and can achieve the same technical effect. To avoid repetition, it will not be described again here.

[0877] It should be understood that the chip mentioned in the embodiments of this application may also be referred to as a system-on-a-chip, system chip, chip system, or system-on-a-chip, etc.

[0878] This application also provides a computer program / program product, which is stored in a storage medium and executed by at least one processor to implement the various processes of the above-described quality information determination method embodiments, and can achieve the same technical effect. To avoid repetition, it will not be described again here.

[0879] This application also provides a quality information determination system, including: a terminal, which can be used to execute the steps of the quality information determination method described above, and a network-side device, which can be used to execute the steps of the quality information determination method described above.

[0880] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element. Furthermore, it should be noted that the scope of the methods and apparatuses in the embodiments of this application is not limited to performing functions in the order shown or discussed, but may also include performing functions substantially simultaneously or in the reverse order, depending on the functions involved. For example, the described methods may be performed in a different order than described, and various steps may be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.

[0881] Through the above description of the embodiments, those skilled in the art can clearly understand that the methods of the above embodiments can be implemented by means of software plus necessary general-purpose hardware platforms. Of course, they can also be implemented by hardware, but in many cases the former is a better implementation method. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, can be embodied in the form of a computer software product. This computer software product is stored in a storage medium (such as ROM / RAM, magnetic disk, optical disk) and includes several instructions to cause a terminal (which may be a mobile phone, computer, server, air conditioner, or network device, etc.) to execute the methods described in the various embodiments of this application.

[0882] The embodiments of this application have been described above with reference to the accompanying drawings. However, this application is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of this application without departing from the spirit and scope of the claims, and all of these forms are within the protection scope of this application.

Claims

1. A method for determining quality information, characterized in that, include: The terminal receives a first signal, and the transmission signal corresponding to the first signal is a signal that is converted from the first bearer information to the time domain after being mapped to the delayed Doppler domain and then transmitted. The terminal determines the quality information of the first signal in the delayed Doppler domain; Wherein, the terminal determines the quality information corresponding to the first signal in the delayed Doppler domain, including: the terminal determines the delayed Doppler domain received power RSRP corresponding to the first signal; The terminal determines the delayed Doppler domain received power (RSRP) corresponding to the first signal, including: The terminal determines the first RSRP corresponding to a target port within a target time unit, and determines the delayed Doppler domain received power RSRP corresponding to the first signal based on the first RSRP. Wherein, the first RSRP is the RSRP of the first signal received by the terminal from the target port within the target time unit; The terminal determines the first RSRP corresponding to a target port within a target time unit, including: The terminal determines the first delayed Doppler region corresponding to the first signal received from the target port within the target time unit. The first delayed Doppler region includes the mapping region of the first bearer information in the delayed Doppler domain and the guard band region. The terminal determines the RSRP corresponding to the first delayed Doppler region as the first RSRP corresponding to the target port within the target time unit.

2. The method for determining quality information according to claim 1, characterized in that, The terminal determines the quality information of the first signal in the delayed Doppler domain, and further includes any one or more of the following: The terminal determines the delayed Doppler domain signal strength indication RSSI corresponding to the first signal; The terminal determines the Delayed Doppler Domain Receive Quality (RSRQ) corresponding to the first signal; or The terminal determines the delayed Doppler domain signal and interference evaluation index corresponding to the first signal.

3. The method for determining quality information according to claim 2, characterized in that, The terminal determines the delayed Doppler domain receive quality (RSRQ) corresponding to the first signal, including: After the terminal determines the delayed Doppler domain received power (RSRP) corresponding to the first signal and the terminal determines the delayed Doppler domain signal strength indication (RSSI) corresponding to the first signal, the terminal determines the delayed Doppler domain received quality (RSRQ) corresponding to the first signal based on the delayed Doppler domain received power (RSRP) and the delayed Doppler domain signal strength indication (RSSI) corresponding to the first signal.

4. The method for determining quality information according to claim 3, characterized in that, The terminal determines the delayed Doppler domain reception quality (RSRQ) corresponding to the first signal based on the delayed Doppler domain received power (RSRP) and the delayed Doppler domain signal strength indication (RSSI) corresponding to the first signal, including: The terminal uses the following formula: Determine the delayed Doppler domain reception quality (RSRQ) corresponding to the first signal; Where L is any real number.

5. The method for determining quality information according to claim 2, characterized in that, The terminal determines the delayed Doppler domain signal and interference evaluation index corresponding to the first signal, including: The terminal determines the delayed Doppler domain interference power, which is determined based on the interference measurement signal corresponding to the first signal; After the terminal determines the delayed Doppler domain received power (RSRP) corresponding to the first signal, the terminal determines the delayed Doppler domain signal and interference evaluation index corresponding to the first signal based on the delayed Doppler domain received power (RSRP) and the delayed Doppler domain interference power.

6. The method for determining quality information according to claim 5, characterized in that, The terminal determines the delayed Doppler domain signal and interference evaluation index corresponding to the first signal based on the delayed Doppler domain received power (RSRP) and the delayed Doppler domain interference power, including: The terminal uses the following formula: Determine the delayed Doppler domain signal and interference evaluation index corresponding to the first signal; Where T is any real number.

7. The method for determining quality information according to claim 2, characterized in that, The terminal determines the delayed Doppler domain received power RSRP corresponding to the first signal based on the first RSRP, including: The terminal uses the first RSRP as the delayed Doppler domain received power RSRP corresponding to the first signal.

8. The method for determining quality information according to claim 2, characterized in that, The terminal determines the delayed Doppler domain received power RSRP corresponding to the first signal based on the first RSRP, including: The terminal determines the second RSRP corresponding to the target time unit based on the first RSRP corresponding to the multiple target ports within the target time unit; The terminal uses the second RSRP as the delayed Doppler domain received power RSRP corresponding to the first signal.

9. The method for determining quality information according to claim 2, characterized in that, The terminal determines the delayed Doppler domain received power RSRP corresponding to the first signal based on the first RSRP, including: The terminal determines the second RSRP corresponding to the target time unit based on the first RSRP corresponding to the multiple target ports within the target time unit; The terminal determines the third RSRP based on the second RSRP corresponding to the multiple target time units respectively; The terminal uses the third RSRP as the delayed Doppler domain received power RSRP corresponding to the first signal.

10. The method for determining quality information according to claim 8, characterized in that, The terminal determines the second RSRP corresponding to the target time unit based on the first RSRP corresponding to the multiple target ports within the target time unit, including any one of the following: The terminal determines the linear average of the first RSRP corresponding to the multiple target ports within the target time unit, and uses this as the second RSRP corresponding to the target time unit; or The terminal determines the weighted average of the first RSRPs corresponding to the multiple target ports within the target time unit, and uses this as the second RSRP corresponding to the target time unit; or The terminal determines the largest first RSRP among the first RSRPs corresponding to multiple target ports within the target time unit, and uses it as the second RSRP corresponding to the target time unit; or The terminal determines the smallest first RSRP among the first RSRPs corresponding to the multiple target ports within the target time unit, and uses it as the second RSRP corresponding to the target time unit.

11. The method for determining quality information according to claim 8, characterized in that, The first bearer information corresponding to the transmission signals transmitted by the multiple target ports is transmitted through non-overlapping delayed Doppler resources.

12. The method for determining quality information according to claim 8, characterized in that, The first bearer information corresponding to the transmission signals transmitted by the plurality of target ports is a sequence of mutually orthogonal signals.

13. The method for determining quality information according to claim 9, characterized in that, The terminal determines a third RSRP based on the second RSRP corresponding to each of the multiple target time units, including any one of the following: The terminal determines the linear average of the second RSRP corresponding to each of the plurality of target time units, and uses it as the third RSRP corresponding to the target time unit; or The terminal determines the weighted average of the second RSRPs corresponding to the plurality of target time units, and uses this as the third RSRP corresponding to the target time unit; or The terminal determines the largest second RSRP among the second RSRPs corresponding to the plurality of target time units as the third RSRP corresponding to the target time unit; or The terminal determines the smallest second RSRP among the second RSRPs corresponding to the plurality of target time units, and uses it as the third RSRP corresponding to the target time unit.

14. The method for determining quality information according to claim 2, characterized in that, The terminal determines the delayed Doppler domain received power RSRP corresponding to the first signal based on the first RSRP, including: The terminal determines the fourth RSRP based on the first RSRP corresponding to the target port in the multiple target time units respectively; The terminal uses the fourth RSRP as the delayed Doppler domain received power RSRP corresponding to the first signal.

15. The method for determining quality information according to claim 14, characterized in that, The terminal determines a fourth RSRP based on the first RSRP corresponding to the target port in the multiple target time units, including any one of the following: The terminal determines the linear average of the first RSRP corresponding to the target port in multiple target time units, and uses it as the fourth RSRP corresponding to the target time unit; or The terminal determines the weighted average of the first RSRP corresponding to the target port in the multiple target time units, and uses it as the fourth RSRP corresponding to the target time unit; or The terminal determines the largest first RSRP among the first RSRPs corresponding to the target port in the multiple target time units, and uses it as the fourth RSRP corresponding to the target time unit; or The terminal determines the smallest first RSRP among the first RSRPs corresponding to the target port in the multiple target time units, and uses it as the fourth RSRP corresponding to the target time unit.

16. The method for determining quality information according to claim 9, characterized in that, The plurality of target time units are continuous, periodic, or aperiodic and discontinuous.

17. The method for determining quality information according to any one of claims 7-16, characterized in that, The terminal determines the RSRP corresponding to the first delayed Doppler region by including: The terminal determines the RSRP corresponding to the first delayed Doppler region in the delayed Doppler domain.

18. The method for determining quality information according to claim 17, characterized in that, The terminal determines the RSRP corresponding to the first delayed Doppler region in the delayed Doppler domain, including: The terminal determines a first signal power, which is the Zth largest signal power in descending order of the signal power of all signals in the first delayed Doppler region, or the first signal power is the signal power of all signals in the first delayed Doppler region that is higher than a first power threshold. The terminal determines the linear average value of the first signal power as the RSRP corresponding to the first delayed Doppler region; Z is a positive integer.

19. The method for determining quality information according to claim 18, characterized in that, The terminal determines the linear average value of the first signal power, including: The terminal determines a first sum of the power of the first signal; The terminal divides the first sum by the first coefficient to obtain the linear average value of the first signal power; The first coefficient is any one of the following or is proportional to any one of the following: The total number of delayed Doppler resource grids within the first delayed Doppler region; Z； The number of signals in the first delayed Doppler region whose signal power is higher than a first power threshold; Total number of resource grids in the delay direction; Total number of resource gratings in the Doppler direction; or Total number of delayed Doppler resource rasters.

20. The method for determining quality information according to any one of claims 7-16, characterized in that, The terminal determines the RSRP corresponding to the first delayed Doppler region, including: The terminal determines the RSRP corresponding to the first delayed Doppler region in the time-frequency domain.

21. The method for determining quality information according to claim 20, characterized in that, The terminal determines the RSRP corresponding to the first delayed Doppler region in the time-frequency domain, including: The terminal determines a second signal in the first delayed Doppler region from the first signal received from the target port within the target time unit. The second signal is either the first Q signals in the first delayed Doppler region that are sorted by signal power from largest to smallest, or the second signal is a signal in the first delayed Doppler region whose signal power is higher than a second power threshold. The terminal converts the second signal to the time-frequency domain to obtain the third signal; The terminal determines the linear average value of the signal power of the third signal as the RSRP corresponding to the first delayed Doppler region; Q is a positive integer.

22. The method for determining quality information according to claim 21, characterized in that, The terminal determines the linear average value of the signal power of the third signal, including: The terminal determines a second sum of the signal power of the third signal; The terminal divides the second sum by the second coefficient to obtain the linear average value of the signal power of the third signal; The second coefficient is any one of the following or is proportional to any one of the following: The total number of delayed Doppler resource grids within the first delayed Doppler region; Q； The number of signals in the first delayed Doppler region whose signal power is higher than the second power threshold; Total number of resource grids in the delay direction; Total number of resource gratings in the Doppler direction; or Total number of delayed Doppler resource rasters.

23. The method for determining quality information according to any one of claims 2-16, 18, 19, 21, and 22, characterized in that, The terminal determines the delayed Doppler domain signal strength indication (RSSI) corresponding to the first signal, including: The terminal determines a first RSSI corresponding to a target time unit, where the first RSSI is the RSSI of the first signal received by the terminal within the target time unit; The terminal uses the first RSSI corresponding to the target time unit as the delayed Doppler domain signal strength indication RSSI corresponding to the first signal.

24. The method for determining quality information according to any one of claims 2-16, 18, 19, 21, and 22, characterized in that, The terminal determines the delayed Doppler domain signal strength indication (RSSI) corresponding to the first signal, including: The terminal determines a first RSSI corresponding to a target time unit, where the first RSSI is the RSSI of the first signal received by the terminal within the target time unit; The terminal determines the second RSSI based on the first RSSI corresponding to the multiple target time units respectively; The terminal uses the second RSSI as the delayed Doppler domain signal strength indicator RSSI corresponding to the first signal.

25. The method for determining quality information according to claim 24, characterized in that, The plurality of target time units are continuous, periodic, or aperiodic and discontinuous.

26. The method for determining quality information according to claim 23, characterized in that, The terminal determines a first RSSI corresponding to a target time unit, including: The terminal determines a second delayed Doppler region corresponding to the first signal received in the target time unit, and the second delayed Doppler region includes the first delayed Doppler region; The terminal determines the RSSI corresponding to the second delayed Doppler region as the first RSSI corresponding to the target time unit.

27. The method for determining quality information according to claim 26, characterized in that, The terminal determines the RSSI corresponding to the second delayed Doppler region, including: The terminal determines the RSSI corresponding to the second delayed Doppler region in the delayed Doppler domain.

28. The method for determining quality information according to claim 27, characterized in that, The terminal determines the RSSI corresponding to the second delayed Doppler region in the delayed Doppler domain, including: The terminal determines the linear average value of all signal power within the second delayed Doppler region as the RSSI corresponding to the second delayed Doppler region.

29. The method for determining quality information according to claim 28, characterized in that, The terminal determines the linear average value of all signal power within the second delayed Doppler region, including: The terminal determines a third sum of all signal power within the second delayed Doppler region; The terminal divides the third sum by the third coefficient to obtain the linear average value of all signal power in the second delayed Doppler region; The third coefficient is any one of the following or is proportional to any one of the following: The total number of delayed Doppler resource grids within the second delayed Doppler region; Total number of resource grids in the delay direction; Total number of resource gratings in the Doppler direction; or Total number of delayed Doppler resource rasters.

30. The method for determining quality information according to claim 26, characterized in that, The terminal determines the RSSI corresponding to the second delayed Doppler region, including: The terminal determines the RSSI corresponding to the second delayed Doppler region in the time-frequency domain.

31. The method for determining quality information according to claim 30, characterized in that, The terminal determines the RSSI corresponding to the second delayed Doppler region in the time-frequency domain, including: The terminal determines a fourth signal within the second delayed Doppler region from the first signal received from the target time unit; The terminal converts the fourth signal to the time-frequency domain to obtain the fifth signal; The terminal determines the linear average value of the signal power of the fifth signal as the RSSI corresponding to the second delayed Doppler region.

32. The method for determining quality information according to claim 31, characterized in that, The terminal determines the linear average value of the signal power of the fifth signal, including: The terminal determines the fourth sum of the signal power of the fifth signal; The terminal divides the fourth sum by the fourth coefficient to obtain the linear average value of the signal power of the fifth signal; The fourth coefficient is any one of the following or is proportional to any one of the following: The total number of delayed Doppler resource grids within the second delayed Doppler region; Total number of resource grids in the delay direction; Total number of resource gratings in the Doppler direction; or Total number of delayed Doppler resource rasters.

33. The method for determining quality information according to any one of claims 1-16, 18, 19, 21, 22, 25-32, characterized in that, The first carrier information includes any one or more of the following: Synchronization signal, reference signal, or signal used to measure cross-link interference (CLI).

34. The method for determining quality information according to any one of claims 1-16, 18, 19, 21, 22, and 25-32, characterized in that, The method further includes: The terminal sends first information to the sending end, the first information including at least one of the following: The quality information of the first signal in the delayed Doppler domain; The quality level corresponding to the quality information; Quantization encoding corresponding to the quality information; or The magnitude relationship between the quality information and historical quality information.

35. A quality information determination device, characterized in that, include: The receiving module is used to receive a first signal, the transmitting signal corresponding to the first signal being a signal that maps the first bearer information in the delayed Doppler domain and then converts it to the time domain for transmission; The determining module is used to determine the quality information of the first signal in the delayed Doppler domain; The determining module determines the quality information of the first signal in the delayed Doppler domain, including: determining the delayed Doppler domain received power RSRP of the first signal; The determining module determines the delayed Doppler domain received power (RSRP) corresponding to the first signal, including: determining a first RSRP corresponding to a target port within a target time unit, and determining the delayed Doppler domain received power (RSRP) corresponding to the first signal based on the first RSRP; the first RSRP is the RSRP of the first signal received from the target port within the target time unit; The determining module determines the first RSRP corresponding to a target port within a target time unit, including: Determine the first delayed Doppler region corresponding to the first signal received from the target port within the target time unit. The first delayed Doppler region includes the mapping region of the first bearer information in the delayed Doppler domain and the guard band region. The RSRP corresponding to the first delayed Doppler region is determined as the first RSRP corresponding to the target port within the target time unit.

36. A terminal, characterized in that, It includes a processor and a memory, the memory storing a program or instructions that can run on the processor, the program or instructions being executed by the processor to implement the steps of the quality information determination method as described in any one of claims 1 to 34.

37. A readable storage medium, characterized in that, The readable storage medium stores a program or instructions that, when executed by a processor, implement the steps of the quality information determination method as described in any one of claims 1 to 34.

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