CN117639976A

CN117639976A - Time delay information estimation method, device, communication equipment and storage medium

Info

Publication number: CN117639976A
Application number: CN202210957892.9A
Authority: CN
Inventors: 黄伟; 谭俊杰; 简荣灵
Original assignee: Vivo Mobile Communication Co Ltd
Current assignee: Vivo Mobile Communication Co Ltd
Priority date: 2022-08-10
Filing date: 2022-08-10
Publication date: 2024-03-01
Also published as: WO2024032609A1

Abstract

The application discloses a time delay information estimation method, a device, communication equipment and a storage medium, which belong to the technical field of communication, and the time delay information estimation method in the embodiment of the application comprises the following steps: the first equipment receives a first target signal sent by the second equipment according to the first target configuration information, and estimates first target time delay information according to the first target signal; the first device receives a second target signal sent by the third device according to the second target configuration information, and estimates second target time delay information according to the second target signal; the first target latency information includes at least one of: first delay information and second delay information; a sum of the first delay information and the second delay information; the first delay information is channel delay information between the second device and the third device, and the second delay information is channel delay information between the first device and the second device; the second target delay information is channel delay information between the first device and the third device.

Description

Time delay information estimation method, device, communication equipment and storage medium

Technical Field

The application belongs to the technical field of communication, and particularly relates to a time delay information estimation method, a time delay information estimation device, communication equipment and a storage medium.

Background

In a backscatter communication (Backscatter Communication, BSC) system, a BSC receiving device may simultaneously receive a BSC signal transmitted by a BSC transmitting device, and a direct link interference signal transmitted by a radio frequency source.

In order to improve the communication efficiency of the BSC system, the BSC receiving device may cancel the interference of the direct link interference signal received by the BSC receiving device based on the delay of the BSC cascade channel, the delay of the direct link channel, and the backscatter baseband signal. Additionally, the estimated delay of the concatenated channel may also be used to determine an optimal transmission frame structure. However, how to effectively estimate the delay of the BSC cascade channel and the delay of the direct link channel becomes a technical problem to be solved.

Disclosure of Invention

The embodiment of the application provides a time delay information estimation method, a device, communication equipment and a storage medium, which can solve the problem of how to effectively estimate the time delay of a BSC cascade channel and the time delay of a direct link channel.

In a first aspect, a method for estimating delay information is provided, the method including: the first equipment receives a first target signal sent by the second equipment according to the first target configuration information, and estimates first target time delay information according to the first target signal; the first device receives a second target signal sent by the third device according to the second target configuration information, and estimates second target time delay information according to the second target signal; the first target latency information includes at least one of: first delay information and second delay information; a sum of the first delay information and the second delay information; the first delay information is channel delay information between the second device and the third device, and the second delay information is channel delay information between the first device and the second device; the second target delay information is the channel delay information between the first device and the third device

In a second aspect, a delay information estimation device is provided, and the device includes a receiving module and an estimation module; the receiving module is used for receiving a first target signal sent by the second equipment according to the first target configuration information; the estimating module is used for estimating first target time delay information according to the first target signal; the receiving module is further used for receiving a second target signal sent by the third device according to the second target configuration information; the estimation module is also used for estimating second target time delay information according to the second target signal; the first target latency information includes at least one of: first delay information and second delay information; a sum of the first delay information and the second delay information; the first delay information is channel delay information between the second device and the third device, and the second delay information is channel delay information between the first device and the second device; the second target delay information is channel delay information between the first device and the third device.

In a third aspect, a method for estimating delay information is provided, the method including: the second device receives the first signal sent by the third device according to fourth configuration information, wherein the fourth configuration information is used for configuring parameters of the first signal; the second device generates a first target signal according to the first configuration information, the second configuration information and the first signal, and sends the first target signal to the first device; the first configuration information is used for configuring a mode of generating a first target signal by the second equipment, and the second configuration information is used for configuring parameters of the first target signal; the first signal and the first target signal are both used for channel delay information estimation.

In a fourth aspect, a delay information estimation device is provided, where the device includes a receiving module and a processing module; the receiving module is used for receiving the first signal sent by the third equipment according to fourth configuration information, and the fourth configuration information is used for configuring parameters of the first signal; the processing module is used for generating a first target signal according to the first configuration information, the second configuration information and the first signal and sending the first target signal to the first equipment; the first configuration information is used for configuring a mode of generating a first target signal by the second equipment, and the second configuration information is used for configuring parameters of the first target signal; the first signal and the first target signal are both used for channel delay information estimation.

In a fifth aspect, a method for estimating delay information is provided, the method including: the third device sends a second target signal to the first device and sends a first signal to the second device according to the third configuration information, the fourth configuration information and the fifth configuration information; the second target signal comprises a first signal or a second signal, and is used for estimating channel delay information; the third configuration information is used for configuring a mode of the third device for sending the second target signal, the fourth configuration information is used for configuring parameters of the first signal, and the fifth configuration information is used for configuring parameters of the second signal.

In a sixth aspect, there is provided a delay information estimating apparatus, the apparatus including a transmitting module; the sending module is used for sending a second target signal to the first equipment and sending a first signal to the second equipment according to the third configuration information, the fourth configuration information and the fifth configuration information; the second target signal comprises a first signal or a second signal, and is used for estimating channel delay information; the third configuration information is used for configuring a mode of the third device for sending the second target signal, the fourth configuration information is used for configuring parameters of the first signal, and the fifth configuration information is used for configuring parameters of the second signal.

In a seventh aspect, a method for estimating delay information is provided, the method including: the target device configures target configuration information, the target device including any one of: the first device, the second device, the third device and the fourth device; the fourth device is: network node devices other than the first device, the second device, and the third device; the target configuration information is used for channel delay information estimation.

An eighth aspect provides a delay information estimating apparatus, the apparatus comprising a configuration module; a configuration module, configured to configure target configuration information, the delay information estimation device includes any one of the following: the first device, the second device, the third device and the fourth device; the fourth device is: network node devices other than the first device, the second device, and the third device; the target configuration information is used for channel delay information estimation.

In a ninth aspect, there is provided a communication device comprising a processor and a memory storing a program or instructions executable on the processor, the program or instructions implementing the steps of the method according to the first aspect, or implementing the steps of the method according to the third aspect, or implementing the steps of the method according to the fifth aspect, or implementing the steps of the method according to the seventh aspect.

In a tenth aspect, a communication device is provided, including a processor and a communication interface, where the communication interface is configured to receive, according to first target configuration information, a first target signal sent by a second device; the processor is used for estimating first target time delay information according to the first target signal; the communication interface is further used for receiving a second target signal sent by the third device according to the second target configuration information; the processor is further used for estimating second target time delay information according to the second target signal; the first target latency information includes at least one of: first delay information and second delay information; a sum of the first delay information and the second delay information; the first delay information is channel delay information between the second device and the third device, and the second delay information is channel delay information between the first device and the second device; the second target delay information is channel delay information between the first device and the third device; or,

The communication interface is used for receiving the first signal sent by the third device according to fourth configuration information, and the fourth configuration information is used for configuring parameters of the first signal; the processor is used for generating a first target signal according to the first configuration information, the second configuration information and the first signal, and sending the first target signal to the first equipment; the first configuration information is used for configuring a mode of generating a first target signal by the second equipment, and the second configuration information is used for configuring parameters of the first target signal; the first signal and the first target signal are used for channel delay information estimation; or,

the communication interface is used for sending a second target signal to the first equipment and sending a first signal to the second equipment according to the third configuration information, the fourth configuration information and the fifth configuration information; the second target signal comprises a first signal or a second signal, and is used for estimating channel delay information; the third configuration information is used for configuring a mode of the third equipment for sending the second target signal, the fourth configuration information is used for configuring parameters of the first signal, and the fifth configuration information is used for configuring parameters of the second signal; or,

The processor is configured to configure target configuration information, and the delay information estimating device includes any one of the following: the first device, the second device, the third device and the fourth device; the fourth device is: network node devices other than the first device, the second device, and the third device; the target configuration information is used for channel delay information estimation.

In an eleventh aspect, there is provided a communication system comprising: the first device according to the first aspect, the second device according to the third aspect, the third device according to the fifth aspect and the target device according to the seventh aspect, wherein the communication system is capable of implementing the steps of the delay information estimation method according to the first aspect and/or implementing the steps of the delay information estimation method according to the third aspect and/or implementing the steps of the delay information estimation method according to the fifth aspect and/or implementing the steps of the delay information estimation method according to the seventh aspect.

In a twelfth aspect, there is provided a readable storage medium having stored thereon a program or instructions which when executed by a processor, performs the steps of the method as described in the first aspect, or performs the steps of the method as described in the third aspect, or performs the steps of the method as described in the fifth aspect, or performs the steps of the method as described in the seventh aspect.

In a thirteenth aspect, there is provided a chip comprising a processor and a communication interface, the communication interface and the processor being coupled, the processor being configured to execute a program or instructions to implement the method according to the first aspect, or to implement the method according to the third aspect, or to implement the method according to the fifth aspect, or to implement the method according to the seventh aspect.

In a fourteenth aspect, there is provided a computer program/program product stored in a storage medium, the computer program/program product being executable by at least one processor to perform the steps of the method as described in the first aspect, or to perform the steps of the method as described in the third aspect, or to perform the steps of the method as described in the fifth aspect, or to perform the steps of the method as described in the seventh aspect.

In this embodiment of the present application, the first device may receive, according to the first target configuration information, a first target signal sent by the second device, and estimate, according to the first target signal, first target delay information; the first device can receive a second target signal sent by the third device according to the second target configuration information, and estimate second target time delay information according to the second target signal; the first target latency information includes at least one of: first delay information and second delay information; a sum of the first delay information and the second delay information; the first delay information is channel delay information between the second device and the third device, and the second delay information is channel delay information between the first device and the second device; the second target delay information is channel delay information between the first device and the third device. By the scheme, since the first device can estimate the channel delay information between the second device and the third device, the channel delay information between the first device and the second device, and the channel delay information between the first device and the third device, respectively, based on the configuration information for estimating the channel delay information, the first target signal transmitted by the second device, and the second target signal transmitted by the third device, the first device can effectively estimate the delay of the cascade channel (i.e., the channel between the first device and the second device, and the channel between the second device and the third device) and the delay of the direct link channel (i.e., the channel between the first device and the third device), and thus the interference of the direct link interference signal can be accurately eliminated by the estimated channel delay.

Drawings

Fig. 1 is a block diagram of a wireless communication system to which embodiments of the present application are applicable;

fig. 2 is a schematic diagram of the structure of the BSC apparatus;

fig. 3 is a schematic diagram of a BSC apparatus modulating signal;

FIG. 4 is a schematic diagram of a BSC system architecture;

fig. 5 is one of flowcharts of a delay information estimation method provided in an embodiment of the present application;

fig. 6 is a second flowchart of a delay information estimation method according to an embodiment of the present application;

fig. 7 is a third flowchart of a delay information estimation method according to an embodiment of the present application;

fig. 8 is a flowchart of a delay information estimation method according to an embodiment of the present application;

fig. 9 is a schematic diagram of a delay information estimation method according to an embodiment of the present application;

fig. 10 is a schematic diagram of a method of applying estimated delay information to determine a frame structure and a symbol period;

fig. 11 is a schematic structural diagram of a delay information estimating apparatus according to an embodiment of the present application;

fig. 12 is a schematic structural diagram of a delay information estimating apparatus according to an embodiment of the present application;

fig. 13 is a schematic structural diagram of a delay information estimating apparatus according to an embodiment of the present application;

fig. 14 is a schematic structural diagram of a delay information estimating apparatus according to an embodiment of the present application;

Fig. 15 is a schematic diagram of a communication device provided in an embodiment of the present application;

fig. 16 is a schematic diagram of a hardware structure of a communication device provided in the embodiment of the present application when the communication device is a terminal;

fig. 17 is a schematic hardware structure of the communication device provided in the embodiment of the present application when the communication device is a network device.

Detailed Description

Technical solutions in the embodiments of the present application will be clearly described below with reference to the drawings in the embodiments of the present application, and it is apparent that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments in the present application are within the scope of the protection of the present application.

The terms first, second and the like in the description and in the claims, are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the terms so used are interchangeable under appropriate circumstances such that the embodiments of the application are capable of operation in sequences other than those illustrated or otherwise described herein, and that the terms "first" and "second" are generally intended to be used in a generic sense and not to limit the number of objects, for example, the first object may be one or more. Furthermore, in the description and claims, "and/or" means at least one of the connected objects, and the character "/" generally means a relationship in which the associated object is an "or" before and after.

It is noted that the techniques described in embodiments of the present application are not limited to long term evolution (Long Term Evolution, LTE)/LTE evolution (LTE-Advanced, LTE-a) systems, but may also be used in other wireless communication systems, such as code division multiple access (Code Division Multiple Access, CDMA), time division multiple access (Time Division Multiple Access, TDMA), frequency division multiple access (Frequency Division Multiple Access, FDMA), orthogonal frequency division multiple access (Orthogonal Frequency Division Multiple Access, OFDMA), single carrier frequency division multiple access (Single-carrier Frequency Division Multiple Access, SC-FDMA), and other systems. The terms "system" and "network" in embodiments of the present application are often used interchangeably, and the techniques described may be used for both the above-mentioned systems and radio technologies, as well as other systems and radio technologies. The following description describes a New air interface (NR) system for purposes of example and uses NR terminology in much of the description that follows, but these techniques are also applicable to applications other than NR system applications, such as generation 6 (6) ^th Generation, 6G) communication system.

Fig. 1 shows a block diagram of a wireless communication system to which embodiments of the present application are applicable. The wireless communication system includes a terminal 11 and a network device 12. The terminal 11 may be a mobile phone, a tablet (Tablet Personal Computer), a Laptop (Laptop Computer) or a terminal-side Device called a notebook, a personal digital assistant (Personal Digital Assistant, PDA), a palm top, a netbook, an ultra-mobile personal Computer (ultra-mobile personal Computer, UMPC), a mobile internet appliance (Mobile Internet Device, MID), an augmented reality (augmented reality, AR)/Virtual Reality (VR) Device, a robot, a Wearable Device (weather Device), a vehicle-mounted Device (VUE), a pedestrian terminal (PUE), a smart home (home Device with a wireless communication function, such as a refrigerator, a television, a washing machine, or a furniture), a game machine, a personal Computer (personal Computer, PC), a teller machine, or a self-service machine, and the Wearable Device includes: intelligent wrist-watch, intelligent bracelet, intelligent earphone, intelligent glasses, intelligent ornament (intelligent bracelet, intelligent ring, intelligent necklace, intelligent anklet, intelligent foot chain etc.), intelligent wrist strap, intelligent clothing etc.. Note that, the specific type of the terminal 11 is not limited in the embodiment of the present application. The network-side device 12 may comprise an access network device or a core network device, wherein the access network device 12 may also be referred to as a radio access network device, a radio access network (Radio Access Network, RAN), a radio access network function or a radio access network element. Access network device 12 may include a base station, a WLAN access point, a WiFi node, or the like, which may be referred to as a node B, an evolved node B (eNB), an access point, a base transceiver station (Base Transceiver Station, BTS), a radio base station, a radio transceiver, a basic service set (Basic Service Set, BSS), an extended service set (Extended Service Set, ESS), a home node B, a home evolved node B, a transmission and reception point (Transmitting Receiving Point, TRP), or some other suitable terminology in the art, and the base station is not limited to a particular technical vocabulary so long as the same technical effect is achieved, and it should be noted that in the embodiments of the present application, only a base station in an NR system is described as an example, and the specific type of the base station is not limited.

The delay information estimation method, the device, the communication equipment and the storage medium provided by the embodiment of the application are described in detail below by some embodiments and application scenes with reference to the accompanying drawings.

The BSC refers to a BSC device that uses radio frequency signals in other devices or environments to perform signal modulation to transmit information of the BSC device, and is a typical passive internet of things device. Fig. 2 shows a schematic structural diagram of a BSC apparatus, and as shown in (a) in fig. 2, the BSC transmitting apparatus mainly includes the following main modules:

antenna unit 21: for receiving radio frequency signals, control commands, and for transmitting modulated backscatter signals;

the energy harvesting or energizing module 22: for the BSC transmitting device to collect radio frequency energy, or other energy, including but not limited to solar energy, kinetic energy, mechanical energy, thermal energy, etc.; the energy harvesting module or power module 22 may power all other modules in the BSC transmission apparatus. It should be noted that, the energy collecting module or the energy supplying module 22 may be a battery supplying module, where the BSC transmitting device is a semi-passive device;

microcontroller 23: the method is used for controlling baseband signal processing, energy storage or data scheduling states, switching, system synchronization and the like;

Signal receiving module 24: for demodulating the BSC receiving device or other network nodes, the transmitted control command or data, etc.;

channel coding and modulation module 25: for channel coding and signal modulation under control of the microcontroller 23, and modulation is achieved by selecting different load impedances under control of the microcontroller 23 by means of a selection switch;

memory or sensing module 26: for storing identification (Identity Document, ID) information of the device, location information or sensor data of the device, etc.

In addition to the above-described typical constituent modules, the BSC transmission apparatus of the future may even integrate a tunnel diode amplifier module, a low noise amplifier module, etc. for enhancing the reception sensitivity and transmission power of the BSC transmission apparatus.

The BSC receiving apparatus in the conventional radio frequency identification system is typically a reader, and as shown in (b) of fig. 2, the BSC receiving apparatus mainly includes the following main modules:

antenna unit 27: for receiving the modulated backscatter signal;

a backscatter signal detection module 28: for detecting the backscatter signal transmitted by the BSC transmitting device (including amplitude keying modulation (Amplitude Shift Keying, ASK) detection, phase keying modulation (Phase Shift Keying, PSK) detection, frequency keying modulation (Frequency Shift Keying, FSK) detection, quadrature amplitude modulation (Quadrature Amplitude Modulation, QAM) detection, etc.).

Demodulation decoding module 29: for demodulating and decoding the detected signal to recover the original information stream.

Fig. 3 shows a schematic diagram of a modulation signal of a BSC apparatus, which can control the reflection coefficient Γ of a circuit by adjusting its internal impedance, as shown in fig. 3, so as to change an incident signal S _in Amplitude, frequency, phase, etc., of (t) to effect modulation of the signal. Wherein the reflectance of the signal can be characterized by the following equation (1):

wherein Z is ₀ For the characteristic impedance of the antenna, Z ₁ Is the load impedance. Let the incident signal be S _in (t) the output signal isThus, by reasonably controlling the reflection coefficient Γ, a corresponding amplitude modulation, frequency modulation or phase modulation may be achieved. Based on this, the BSC device may be a Tag (i.e., tag) in a conventional radio frequency identification system, or a Passive or Semi-Passive internet of things (Passive/Semi-Passive Internet of Things, passive/Semi-Passive IoT) device.

The future 6G communication network needs to support massive everything interconnection, wherein the number of the equipment of the Internet of things reaches the trillion level, and the connection density is improved by 10-100 times compared with that of 5G, and reaches 10-100 pieces/m < 2 >. The mass internet of things devices provide new challenges for both cost and power consumption. Cellular networking, low cost, low power consumption and even zero power consumption passivity are main trends of the future internet of things equipment development. Limited by the effects of network node transmit power, two-way link attenuation, tank circuit energy storage efficiency and capacity, BSC device receive sensitivity, transceiver antenna gain, and signal interference, BSC forward and reverse coverage face significant technical challenges.

Currently, BSC systems can be divided into single-base backscatter communication systems (Monostatic Backscatter Communication Systems, MBCSs) and double-base backscatter communication systems (Bistatic Backscatter Communication Systems, BBCSs). Fig. 4 shows a schematic diagram of a BSC system architecture, where MBCSs (e.g. a conventional Radio Frequency identification system) includes a BSC transmitting device 41 (e.g. Tag) and a Reader (i.e. writer) 42, and the Reader 42 includes an electromagnetic Frequency (RF) Radio Frequency source and a BSC receiving end, where the RF Radio Frequency source is used to generate an RF Radio Frequency signal to power the BSC transmitting device 41, as shown in fig. 4 (a); the BSC transmitting apparatus 41 performs signal demodulation by back-scattering the modulated RF radio frequency signal, so that the BSC receiving end in the reader/writer 42 can perform signal demodulation after receiving the back-scattered signal. Since the RF source and BSC receiver are in the same device (e.g., reader 42), they are referred to as MBCSs. In the MBCSs system, the RF radio frequency signal transmitted from the BSC transmitting apparatus is subjected to the double near-far effect caused by the signal attenuation of the round trip signal, so that the energy attenuation of the signal is large, and thus the MBCSs system is generally used for a short-range BSC. As shown in fig. 4 (b), unlike the MBCSs system, the RF radio source 43, the BSC transmitting apparatus 44, and the BSC receiving apparatus 45 in the BBCSs are separated, so that the problem of greater round trip signal attenuation can be avoided. In addition, by reasonably positioning the RF source 43, the performance of BBCSs can be further improved. It should be noted that the environmental backscatter communication system is also one type of BBCSs, but the radio frequency source in the environmental backscatter communication system may be a radio frequency source in a usable environment, such as a television tower, a cellular base station, a WiFi signal, a bluetooth signal, etc.

It can be seen that the use of BBCSs architecture is one of the effective ways to promote BSC coverage, and can avoid the problem of two-way signal attenuation in MBCSs. By reasonably placing the positions of the radio frequency source and the BSC receiving equipment and even disposing the radio frequency source specially used for radio frequency energy supply, the transmission coverage of the BSC can be effectively improved. However, in BBCSs, since the received signal is a superposition of a useful backscatter signal and a co-frequency direct link interference signal, and the strength of the direct link interference signal may be much greater than the backscatter signal strength, strong direct link interference cancellation is a technological premise for achieving rate, coverage, reliability transmission, and large-scale connection improvement in backscatter communications. And since the direct link interference may be a modulated signal and the BSC receiving device is typically unaware of the modulation characteristics of the direct link signal, the challenge of direct link interference cancellation is greater and the same problem is also present in self-interference cancellation in MBCSs.

In order to effectively eliminate the strong direct link interference from the radio frequency source, researchers combine the design of the backscattering baseband signal based on the time domain structure characteristic and the frequency domain structure characteristic of the radio frequency carrier signal, so that the BSC receiving device can effectively eliminate the strong direct link interference. Considering that the radio frequency carrier signal is an orthogonal frequency division multiplexing (Orthogonal Frequency Division Multiplexing, OFDM) signal waveform scenario widely used in LTE and NR systems, researchers can effectively eliminate strong direct link interference under the condition that the channel delay does not exceed the CP length by jointly designing differential baseband modulation signals in BSC devices according to the characteristic that Cyclic Prefix (CP) time domain repeating structures exist in the OFDM signal. Besides the repeated structure in the OFDM time domain, the protection band in the OFDM frequency domain can be used for interference elimination, and the equivalent frequency of the baseband signal is shifted to a different protection band for signal modulation. The same design concept can be extended to an unmodulated Shan Zhengxian wave radio frequency signal, etc.

In interference cancellation, the BSC receiving device needs minimum channel transmission delay according to the direct link and the backscatter cascade linkAnd maximum delay spread->To determine a decision threshold. Wherein the method comprises the steps of，Discrete channel transmission delay representing radio frequency source to BSC receiving device, < >>Representing the discrete channel propagation delay of the cascade channel of the RF source to the BSC transmitting device and the BSC transmitting device to the BSC receiving device, f _s Representing the sampling rate of the signal; />Representing the channel delay spread of a radio source to a BSC receiving device, L _b ＝[(d _h1 +d _h2 +τ _h1 +τ _h2 )f _s ]Representing the channel delay spread of the channel cascade of the radio source to the BSC transmitting device and the BSC transmitting device to the BSC receiving device. In addition, after obtaining the channel transmission delay and the channel delay spread of each link, the method can also be used for determining the frame structure of the radio frequency carrier or the symbol period of the baseband signal. However, there is currently no efficient delay estimation method for estimating channel delay information (including channel transmission delay and channel delay spread) of a concatenated channel and a direct link.

In order to solve the above problem, in the delay information estimation method provided in the embodiments of the present application, the first device may receive, according to the first target configuration information, a first target signal sent by the second device, and estimate, according to the first target signal, first target delay information; the first device can receive a second target signal sent by the third device according to the second target configuration information, and estimate second target time delay information according to the second target signal; the first target latency information includes at least one of: first delay information and second delay information; a sum of the first delay information and the second delay information; the first delay information is channel delay information between the second device and the third device, and the second delay information is channel delay information between the first device and the second device; the second target delay information is channel delay information between the first device and the third device. By the scheme, since the first device can estimate the channel delay information between the second device and the third device, the channel delay information between the first device and the second device, and the channel delay information between the first device and the third device, respectively, based on the configuration information for estimating the channel delay information, the first target signal transmitted by the second device, and the second target signal transmitted by the third device, the first device can effectively estimate the delay of the cascade channel (i.e., the channel between the first device and the second device, and the channel between the second device and the third device) and the delay of the direct link channel (i.e., the channel between the first device and the third device), and thus the interference of the direct link interference signal can be accurately eliminated by the estimated channel delay.

An embodiment of the present application provides a method for estimating delay information, and fig. 5 shows a flowchart of the method for estimating delay information provided in the embodiment of the present application. As shown in fig. 5, the delay information estimation method provided in the embodiment of the present application may include the following steps 501 and 502.

Step 501, the first device receives a first target signal sent by the second device according to the first target configuration information, and estimates first target delay information according to the first target signal.

Alternatively, in the embodiment of the present application, the first device may be a BSC receiving device.

Alternatively, in the embodiment of the present application, the second device may be a BSC transmitting device.

Step 502, the first device receives a second target signal sent by the third device according to the second target configuration information, and estimates second target delay information according to the second target signal.

Alternatively, in the embodiment of the present application, the third device may be a radio frequency source device.

In this embodiment of the present application, the first target delay information includes at least one of the following:

first delay information and second delay information;

and the sum of the first delay information and the second delay information.

In the embodiment of the application, the first delay information is channel delay information between the second device and the third device, and the second delay information is channel delay information between the first device and the second device; the second target delay information is channel delay information between the first device and the third device.

In this embodiment of the present application, the first target configuration information and the second target configuration information are both used for channel delay information estimation.

Optionally, in an embodiment of the present application, the first target configuration information includes: first configuration information and second configuration information.

In this embodiment of the present application, the first configuration information is used to configure a manner in which the second device generates the first target signal, and the second configuration information is used to configure parameters of the first target signal.

Optionally, in an embodiment of the present application, a manner in which the second device generates the first target signal may include: a regenerative forwarding mode or a direct forwarding mode.

In this embodiment of the present application, the above-mentioned regeneration forwarding method is: a mode of demodulating the received signal and then remodulating the demodulated signal and then transmitting; the above-mentioned direct forwarding mode is: the data content of the signal is not changed, and only the mode of transmitting after the power of the signal is changed.

Optionally, in an embodiment of the present application, the second target configuration information includes any one of the following: third configuration information and fourth configuration information; third configuration information and fifth configuration information.

In this embodiment of the present application, the second target signal includes a first signal or a second signal; the third configuration information is used for configuring a mode of the third device for sending the second target signal, the fourth configuration information is used for configuring parameters of the first signal, and the fifth configuration information is used for configuring parameters of the second signal.

Optionally, in an embodiment of the present application, the parameter of the signal includes at least one of: the type of signal, the length of the signal, the time-frequency resources of the signal.

In the embodiment of the application, since the first target configuration information is used for configuring the first target signal and the second target configuration information is used for configuring the second target signal, the first device can receive the first target signal sent by the second device and the second target signal sent by the third device according to different configuration information, so that the accuracy of the signal receiving of the first device can be improved.

Optionally, in an embodiment of the present application, the first target configuration information and the second target configuration information may be configured by any one of the following devices: a first device, a second device, a third device, and a fourth device.

In this embodiment of the present application, the fourth device is: network node devices other than the first device, the second device and the third device.

Optionally, in the embodiment of the present application, the first device, the second device, the third device, and the fourth device may be any possible devices such as a terminal or a network side device.

In the embodiment of the present application, since the first target configuration information and the second target configuration information may be configured by the first device, the second device, the third device, or the fourth device, devices for configuring the first target configuration information and the second target configuration information may be enriched, so that flexibility for configuring the first target configuration information and the second target configuration information may be improved.

Optionally, in the embodiment of the present application, the first device may estimate the first target delay information and the second target delay information by using a preset delay estimation algorithm (for example, a blind delay estimation algorithm, etc.).

Alternatively, in the embodiment of the present application, the above step 501 may be specifically implemented by the following step 501a or step 501 b.

In step 501a, the first device receives a first target signal sent by the second device according to the first target configuration information, and obtains first delay information and estimates second delay information according to the first target signal when the first target signal is generated by the second device in a regenerative forwarding mode.

Alternatively, in the embodiment of the present application, the above step 501a may be specifically implemented by the following step 501a 1.

In step 501a1, the first device receives a first target signal sent by the second device according to the first target configuration information, and obtains first delay information and estimates second delay information according to the first target signal and the first time information when the first target signal is generated by the second device in a regenerative forwarding mode.

In this embodiment of the present application, the first target signal includes first time information.

In this embodiment of the present application, the first time information is used to indicate any one of the following:

(1.1) receiving, by the second device, a reception time of a first signal transmitted by the third device, the first signal being used to estimate first delay information;

(1.2) a transmission time at which the second device transmits the first target signal.

Alternatively, in the embodiment of the present application, the first time information may be timestamp information.

In the embodiment of the application, under the condition that the first target signal is generated by the second device through the regeneration forwarding mode, the first device can acquire the first delay information and estimate the second delay information according to the first target signal and the first time information, so that the accuracy of the first device in acquiring the first delay information and estimating the second delay information can be improved.

In step 501b, the first device receives a first target signal sent by the second device according to the first target configuration information, and estimates a sum of the first delay information and the second delay information according to the first target signal when the first target signal is generated by the second device in a direct forwarding manner.

Alternatively, in the embodiment of the present application, the above step 501b may be specifically implemented by the following step 501b 1.

In step 501b1, the first device receives a first target signal sent by the second device according to the first target configuration information, and estimates a sum of the first delay information and the second delay information according to the first target signal and the second time information when the first target signal is generated by the second device through a regenerative forwarding mode.

In this embodiment of the present application, the first target signal includes second time information.

In this embodiment of the present application, the second time information is used to indicate a transmission time of the first signal transmitted by the third device, and the first signal is used to estimate the first delay information.

Alternatively, in the embodiment of the present application, the second time information may be timestamp information.

In the embodiment of the application, under the condition that the first target signal is generated by the second device through the regeneration forwarding mode, the first device can estimate the sum of the first delay information and the second delay information according to the first target signal and the second time information, so that the accuracy of estimating the sum of the first delay information and the second delay information can be improved.

In the embodiment of the present application, in the case where the first target signal is generated by the second device through the direct forwarding manner, the first device may obtain the first delay information and estimate the second delay information according to the first target signal, or may estimate the sum of the first delay information and the second delay information according to the first target signal, so that the flexibility of the first device in estimating the first target delay information may be improved.

Alternatively, in the embodiment of the present application, the above step 501 may be specifically implemented by the following steps 501c and 501 d.

Step 501c, the first device receives the first target signal sent by the second device according to the first target configuration information, and determines a first sending device of the first target signal according to the first information in the first target signal.

In an embodiment of the present application, the first information includes at least one of: ID information of the first transmitting device, device information of the first transmitting device.

In step 501d, in the case that the first transmitting device is the second device, the first device estimates the first target delay information.

In the embodiment of the present application, since the first device may estimate the first target delay information, that is, the first target signal sent to the other device, when determining that the first sending device of the first target signal is the second device, the first device may not estimate the first target delay information, so that the system overhead of the first device may be saved.

Optionally, in an embodiment of the present application, the second target signal may include a first signal or a second signal, where the first signal or the second signal is used to estimate second target delay information; the above step 502 can be implemented by the following steps 502a and 502b, in particular.

Step 502a, the first device determines a transmission mode of the second target signal according to the second target configuration information.

Step 502b, the first device receives the first signal or the second signal according to the transmission mode of the second target signal, and estimates the second target delay information according to the first signal or the second signal.

Optionally, in the embodiment of the present application, the sending manner of the second target signal may include: only the first signal is transmitted or the first signal and the second signal are transmitted on different time-frequency resources, respectively.

In the embodiment of the present application, since the first device may receive the first signal or the second signal according to the determined transmission manner of the second target signal, and estimate the second target delay information according to the first signal or the second signal, the efficiency of receiving the signal by the first device may be improved.

Alternatively, in the embodiment of the present application, the above step 502 may be specifically implemented by the following step 502 c.

Step 502c, the first device receives the second target signal sent by the third device according to the second target configuration information, and estimates second target delay information according to the second target signal and the third time information.

In this embodiment of the present application, the second target signal includes third time information.

In this embodiment of the present application, the third time information is used to indicate a transmission time when the third device transmits the second target signal.

Alternatively, in the embodiment of the present application, the third time information may be timestamp information.

In the embodiment of the application, since the first device can estimate the second target time delay information according to the received second target signal and the third time information, the accuracy of the first device in estimating the second target time delay information can be improved.

Alternatively, in the embodiment of the present application, the above step 502 may be specifically implemented by the following steps 502d and 502 e.

Step 502d, the first device receives the second target signal sent by the third device according to the second target configuration information, and determines a second sending device of the second target signal according to the second information in the second target signal.

In an embodiment of the present application, the second information includes at least one of: ID information of the second transmitting device, device information of the second transmitting device.

In step 502e, if the second sending device is a third device, the first device estimates the second target delay information.

In the embodiment of the present application, since the first device may estimate the second target delay information, that is, the second target signal sent to the other device, when determining that the second sending device of the second target signal is the third device, the first device may not estimate the second target delay information, so that the system overhead of the first device may be further saved.

In the delay information estimation method provided by the embodiment of the application, because the first device can estimate the channel delay information between the second device and the third device, the channel delay information between the first device and the second device, and the channel delay information between the first device and the third device respectively based on the configuration information for estimating the channel delay information, the first target signal sent by the second device, and the second target signal sent by the third device, the first device can effectively estimate the delay of the cascade channel (i.e., the channel between the first device and the second device, and the channel between the second device and the third device) and the delay of the direct link channel (i.e., the channel between the first device and the third device), so that the interference of the direct link interference signal can be accurately eliminated through the estimated channel delay.

Optionally, in the embodiment of the present application, after the step 502, the method for estimating delay information provided in the embodiment of the present application may further include a step 503 described below.

Step 503, the first device reports the first target delay information and the second target delay information according to the sixth configuration information.

In this embodiment of the present application, the sixth configuration information is used to configure at least one of the following: reporting mode of time delay information, reporting time frequency resource of time delay information, and carrying mode of time delay information.

In the embodiment of the present application, the first device may report the first target delay information and the second target delay information according to the configuration information used for configuring at least one of the reporting mode of the delay information, the reporting time-frequency resource of the delay information, and the carrying mode of the delay information, so that flexibility of reporting the delay information by the first device may be improved.

Optionally, in the embodiment of the present application, the first delay information is used to indicate a first channel transmission delay and a first channel delay spread, the second delay information is used to indicate a second channel transmission delay and a second channel delay spread, and the second target delay information is used to indicate a third channel transmission delay and a third channel delay spread; the above step 503 may be realized by the following step 503a or step 503b or step 503c, in particular.

It can be appreciated that the first channel transmission delay is a channel transmission delay between the second device and the third device, and the first channel delay spread is a channel delay spread between the second device and the third device; the second channel transmission delay is the channel transmission delay between the first device and the second device, and the second channel delay spread is the channel delay spread between the first device and the second device; the third channel transmission delay is a channel transmission delay between the first device and the third device, and the third channel delay spread is a channel delay spread between the first device and the third device.

In step 503a, the first device reports the first channel transmission delay, the first channel delay spread, the second channel transmission delay, the second channel delay spread, the third channel transmission delay and the third channel delay spread according to the sixth configuration information.

Step 503b, the first device reports the sum of the first channel transmission delay and the second channel transmission delay, the sum of the first channel delay spread and the second channel delay spread, the third channel transmission delay and the third channel delay spread according to the sixth configuration information.

Step 503c, the first device reports the sum of the first channel transmission delay and the second channel transmission delay and the minimum channel transmission delay in the third channel transmission delay according to the sixth configuration information; and reporting the sum of the first channel delay spread and the second channel delay spread and the maximum channel delay spread in the third channel delay spread.

In the embodiment of the present application, since the first device may report the first target delay information and the second target delay information in different manners according to the sixth configuration information, the flexibility of reporting the delay information by the first device may be further improved.

An embodiment of the present application provides a method for estimating delay information, and fig. 6 shows a flowchart of the method for estimating delay information provided in the embodiment of the present application. As shown in fig. 6, the delay information estimation method provided in the embodiment of the present application may include the following steps 601 and 602.

Step 601, the second device receives the first signal sent by the third device according to the fourth configuration information.

In this embodiment of the present application, the fourth configuration information is used to configure parameters of the first signal.

Step 602, the second device generates a first target signal according to the first configuration information, the second configuration information and the first signal, and sends the first target signal to the first device.

In this embodiment of the present application, the first signal and the first target signal are both used for channel delay information estimation.

Optionally, in an embodiment of the present application, the first target signal may include at least one of the following: ID information of the second device, device information of the second device.

In this embodiment of the present invention, since the first target signal includes the ID information of the second device and/or the device information of the second device, the second device may send the first target signal carrying the second device information to the first device, so that the first device may learn that the sending device of the first target signal is the second device after receiving the first target signal, which may improve the efficiency of system communication.

Alternatively, in the embodiment of the present application, the above step 602 may be specifically implemented by the following step 602a and step 602b (mode one), or may be specifically implemented by the following step 602c (mode two).

Mode one

In step 602a, the second device generates a first target signal according to the first configuration information, the second configuration information and the first signal by a regenerative forwarding mode, and estimates first delay information according to the first signal and the second time information.

In this embodiment of the present application, the second time information is used to indicate a time when the third device sends the first signal, and the first time delay information is channel time delay information between the second device and the third device.

Optionally, in the embodiment of the present application, in a case that the second device generates the first target signal through a regenerative forwarding manner, the first target signal is at least one of the following: a signal including ID information of the first device, a signal including device information of the first device, a signal scrambled by the first device ID, a first preamble sequence, or a first reference signal.

In an embodiment of the present application, the first preamble sequence includes at least one of: ZC sequences, m sequences, gold sequences, walsh sequences, chaotic sequences, barker sequences, cross-envelope zero auto-correlation (Constant amplitude zero auto correlation, CA-ZAC) sequences, low correlation (Low correlation zone, LCZ) sequences.

In this embodiment of the present application, the first reference signal is: the first device is preconfigured with the time delay estimation signal, so that the first device can know that the first reference signal is the time delay estimation signal for time delay information estimation after receiving the first reference signal.

In this embodiment of the present application, since the first target signal may be at least one of the following: the signal including the ID information of the first device, the signal including the device information of the first device, the signal scrambled by the first device ID, the first preamble sequence, or the first reference signal, and thus the flexibility of the second device to generate the first target signal can be improved.

Step 602b, the second device sends a first target signal to the first device according to the first delay information and the second configuration information.

Mode two

In step 602c, the second device generates a first target signal according to the first configuration information, the second configuration information and the first signal by a direct forwarding mode, and directly sends the first target signal to the first device.

In the embodiment of the present application, since the second device may generate the first target signal in a regenerative forwarding manner, estimate the first delay information according to the first signal and the second time information, and send the first target signal to the first device according to the first delay information and the second configuration information; or the second device can generate the first target signal in a direct forwarding mode and directly send the first target signal to the first device; the flexibility of the second device to transmit the first target signal may thus be increased.

For other descriptions in the embodiments of the present application, reference may be made specifically to the descriptions related to the foregoing embodiments, and in order to avoid repetition, details are not repeated herein.

In the delay information estimation method provided by the embodiment of the application, the second device can generate the first target signal for channel delay information estimation according to the first configuration information for configuring the second device to generate the first target signal, the second configuration information for configuring the parameters of the first target signal and the first signal received from the third device, and send the first target signal to the first device, so that the first device can effectively estimate the channel delay information through the first target signal after receiving the first target signal.

An embodiment of the present application provides a method for estimating delay information, and fig. 7 shows a flowchart of the method for estimating delay information provided in the embodiment of the present application. As shown in fig. 7, the delay information estimation method provided in the embodiment of the present application may include the following step 701.

Step 701, the third device sends a second target signal to the first device and sends a first signal to the second device according to the third configuration information, the fourth configuration information and the fifth configuration information.

In this embodiment of the present application, the second target signal includes a first signal or a second signal, and the second target signal is used for performing channel delay information estimation.

In this embodiment of the present application, the third configuration information is used to configure a manner in which the third device sends the second target signal, the fourth configuration information is used to configure parameters of the first signal, and the fifth configuration information is used to configure parameters of the second signal.

Alternatively, in the embodiment of the present application, the second target signal may be a second preamble sequence or a second reference signal.

In an embodiment of the present application, the second preamble sequence includes at least one of the following: ZC sequence, m sequence, gold sequence, walsh sequence, chaos sequence, baker sequence, CA-ZAC sequence, LCZ sequence;

in this embodiment of the present application, the second reference signal is: at least one of the first device and the second device pre-configures a delay estimation signal.

In the embodiment of the present application, since the second target signal may be the second preamble sequence or the second reference signal, flexibility of sending the second target signal by the third device may be improved.

Optionally, in an embodiment of the present application, the second target signal includes a first signal; the above step 701 can be implemented specifically by the following step 701 a.

In step 701a, the third device sends the first signal to the first device and the second device by broadcasting or multicasting according to the third configuration information, the fourth configuration information and the fifth configuration information.

In an embodiment of the present application, the first signal includes at least one of the following: ID information of the third device, device information of the third device, and second time information.

In this embodiment of the present application, the second time information is used to indicate a transmission time when the third device transmits the first signal.

Optionally, in an embodiment of the present application, the first signal may be at least one of:

(2.1) a signal including ID information of the first device;

(2.2) a signal comprising device information of the first device;

(2.3) a signal including ID information of the second device;

(2.4) a signal comprising device information of the second device;

(2.5) scrambling the signal using a scrambling code common to the first device and the second device.

In the embodiment of the present application, since the first signal may be at least one of the above (2.1) to (2.5), the type of the first signal may be enriched, so that flexibility of the third device for transmitting the first signal to the first device and the second device may be improved.

In the embodiment of the present invention, the third device sends the first signal to the first device and the second device in a broadcast manner or a multicast manner according to the third configuration information, the fourth configuration information and the fifth configuration information, so that the flexibility of sending the signal by the third device can be improved.

Optionally, in an embodiment of the present application, the second target signal includes a second signal; the above step 701 may be implemented specifically by the following step 701 b.

In step 701b, the third device sends the second signal to the first device and sends the first signal to the second device through unicast mode on different time-frequency resources according to the third configuration information, the fourth configuration information and the fifth configuration information.

In this embodiment of the present application, each of the first signal and the second signal includes at least one of the following: ID information of the third device, device information of the third device.

Optionally, in the embodiment of the present application, the first signal may further include second time information, where the second time information is used to indicate a transmission time of the third device to transmit the first signal.

Optionally, in the embodiment of the present application, the second signal may further include fourth time information, where the fourth time information is used to indicate a transmission time of the second signal sent by the third device.

Alternatively, in the embodiment of the present application, the fourth time information may be time stamp information.

In the embodiment of the present application, since the third device may send the second signal to the first device and send the first signal to the second device in a unicast manner on different time-frequency resources according to the third configuration information, the fourth configuration information and the fifth configuration information, the flexibility of sending the signal by the third device may be further improved.

Optionally, in an embodiment of the present application, the first signal may be at least one of: a signal comprising ID information of the second device, a signal comprising device information of the second device, a signal scrambled by the second device ID.

Optionally, in an embodiment of the present application, the second signal may be at least one of: a signal comprising ID information of the first device, a signal comprising device information of the first device, a signal scrambled by the first device ID.

In the delay information estimation method provided in the embodiment of the present application, since the third device may send the second target signal to the first device according to the third configuration information for configuring the manner in which the third device sends the second target signal, the fourth configuration information for configuring the parameter of the first signal, and the fifth configuration information for configuring the parameter of the second signal, and send the first signal to the second device, where the second target signal includes the first signal or the second signal, and the second target signal is used to perform channel delay information estimation, after receiving the signals, the first device and the second device may effectively estimate the channel delay information through the received signals, respectively.

An embodiment of the present application provides a method for estimating delay information, and fig. 8 shows a flowchart of the method for estimating delay information provided in the embodiment of the present application. As shown in fig. 8, the delay information estimation method provided in the embodiment of the present application may include the following step 801.

Step 801, configuring target configuration information by target equipment.

In this embodiment, the target device includes any one of the following: a first device, a second device, a third device, and a fourth device.

In the embodiment of the application, the target configuration information is used for estimating the channel delay information.

Optionally, in the embodiment of the present application, the target configuration information may be carried by any one of the following: radio resource control (Radio Resource Control, RRC), medium access control (Medium Access Control Control Element, MAC-CE), downlink control information (Downlink Control Information, DCI), sidelink control information (Sidelink Control Information, SCI), preamble sequence.

In the embodiment of the application, the target configuration information can be carried through the RRC, the MAC-CE, DCI, SCI or the preamble sequence, so that the flexibility of carrying the target configuration information can be improved.

Optionally, in an embodiment of the present application, the target configuration information may include at least one of the following:

(3.1) first configuration information for configuring a manner in which the second device generates the first target signal;

(3.2) second configuration information for configuring parameters of the first target signal;

(3.3) third configuration information for configuring a manner in which the third device transmits the second target signal;

(3.4) fourth configuration information for configuring parameters of the first signal;

(3.5) fifth configuration information for configuring parameters of the second signal;

(3.6) sixth configuration information for configuring at least one of: reporting mode of time delay information, reporting time frequency resource of time delay information, and carrying mode of time delay information.

In the embodiment of the present application, since the target configuration information may include at least one of the above (3.1) to (3.6), the content of the target configuration information may be enriched, so that flexibility of configuring the target configuration information by the target device may be improved.

Optionally, in an embodiment of the present application, the manner in which the second device generates the first target signal may include any one of the following: a regenerative transfer mode and a direct transfer mode.

Optionally, in an embodiment of the present application, the second target signal may include at least one of: a first signal, a second signal.

In the embodiment of the application, the first signal is used for the first device to estimate the second target delay information, and/or the first signal is used for the second device to estimate the first delay information.

In the embodiment of the present application, the second signal is used for the first device to estimate the second target delay information.

In this embodiment of the present application, the second target delay information is channel delay information between the first device and the third device, and the first delay information is channel delay information between the second device and the third device.

In the delay information estimation method provided by the embodiment of the application, because the target device can configure the target configuration information for channel delay information estimation, the first device, the second device and the third device can effectively estimate the delay information of the channel through the configured target configuration information.

The delay information estimation method and the application scenario thereof provided by the embodiment of the application are described in an exemplary manner below with reference to the accompanying drawings.

Fig. 9 is a schematic diagram of a delay information estimation method according to an embodiment of the present application, where, as shown in fig. 9, a frame structure for estimating delay information of each link includes:

(1) Timestamp information (e.g., first time information, second time information, or third time information), i.e., time information at which the present signal was transmitted;

(2) Source device (i.e., third device) ID information or other device information, if a signal is transmitted to the BSC transmitting device (i.e., second device), the source device ID or other device information is optionally selected, and a frame structure example is shown in fig. 9 (c);

(3) A preamble sequence, or a reference signal preconfigured by a target device;

(4) Alternatively, a target device ID is included, and a frame structure example is shown in (a) in fig. 9;

(5) Alternatively, the target device ID is not included, but the frame is a signal scrambled by the target device ID or related information, and the frame structure is shown in fig. 9 (b).

A typical application scenario of the delay information estimation method provided in the embodiments of the present application is to eliminate direct link interference, fig. 10 is a schematic diagram showing a method of applying estimated delay information to determine a frame structure and a symbol period, and in order to effectively eliminate direct link interference, a signal sent by a radio frequency source device (i.e. a third device) needs to satisfy:

(1) The radio frequency source device transmits a carrier signal s (t) satisfying a time domain structure as shown in (a) in fig. 10:

(a) s (t) comprises two time slot blocks (which are exemplified by time slot blocks and can be extended to other time units) with identical polarity and data to form a baseThe time slot block has the data length of N and the period length of T in each time slot _s And may be random or non-random, where s (t) may be expressed as formula (2) below:

(b) Alternatively, as shown in fig. 10 (b), each two slot blocks are distributed, with an intermediate interval of Q or a duration of T _a S (t) at this time can be expressed as the following formula (3):

(c) Optionally, the data in each time slot may be a non-random or random sequence generated according to a preset rule;

(d) To ensure interference cancellation performance, T _s Or N must satisfy: N+D>L；

Wherein,for minimum channel transmission delay->Is the maximum delay spread.

For the BSC transmitting device (i.e., the second device), the BSC modulating signal is modulated by adjusting the symbol period T _b Period T of carrier frequency signal _s And satisfies: t (T) _b ＝2T _s ；

In addition, it may be defined that the BSC baseband signal is coded by Miller, and as shown in fig. 10 (c), if the transmission bit b=0, the baseband signal B (t) is: b (T) =0, 0.ltoreq.t.ltoreq.T _b The method comprises the steps of carrying out a first treatment on the surface of the If the transmission bit b=1, the baseband signal B (t) is:

alternatively, the estimated delay information may also be applied to determine a decision value. In BBCSs using OFDM as a radio frequency signal, based on the repetition structure of CP in the OFDM signal transmitted by the radio frequency source device (i.e., the third device) and the Miller code baseband signal of the BSC transmitting device (i.e., the second device), if the transmission bit b=0, the baseband signal waveform is: b [ n ]]＝1，n＝0，…，K(N+N _c ) -1; if the transmission bit b=1, the baseband signal waveform is:

where N is the length of the OFDM symbol, N _c Is the length of CP.

Without loss of generality, let k=1. For the BSC receiving device (i.e., the first device), the direct link interference signal y will be received _d [n]And a backscatter signal y _b [n]. Direct link interference signal y according to the characteristic of the CP repetition structure _d [n]The method meets the following conditions:

y _d [n]＝y _d [n+N]，n＝L _h1 -1，…，N _c +D _h1 -1；

likewise, the backscatter signal y _b [n]The method meets the following conditions:

if the transmission bit b=0, y _b [n]＝y _b [n+N]，n＝L _b -1，…，N _c +D _b -1，

If the transmission bit b=1, y _b [n]＝-y _b [n+N]，n＝L _b -1，…，N _c +D _b -1。

Then utilize y _d [n]And y _b [n]Is constructed as follows:

if the transmission bit b=0, z [ n ]]＝y[n]-y[n+N]＝v[n]，n＝L-1，…，N _c +D-1，

If the transmission bit b=1, z [ n ]]＝y[n]-y[n+N]＝u[n]+v[n]，n＝L-1，…，N _c +D-1；

Wherein y [ n ]]＝y _b [n]+y _d [n]+w[n]Receiving a signal for the BSC receiving device;

and is also provided withv[n]＝w[n]-w[n+N]。

The decision threshold thus constructed is:wherein the threshold value gamma is a value equal to the CP length N _c A minimum channel delay D and a maximum delay spread L.

According to the time delay information estimation method provided by the embodiment of the application, the execution main body can be the time delay information estimation device. In the embodiment of the present application, a method for performing delay information estimation by using a delay information estimation device is taken as an example, and the delay information estimation device provided in the embodiment of the present application is described.

Referring to fig. 11, an embodiment of the present application provides a delay information estimation apparatus 110, where the delay information estimation apparatus 110 may include a receiving module 111 and an estimating module 112. The receiving module 111 may be configured to receive, according to the first target configuration information, a first target signal sent by the second device. The estimation module 112 may be configured to estimate the first target delay information according to the first target signal. The receiving module 111 may be further configured to receive a second target signal sent by the third device according to the second target configuration information. The estimation module 112 may be further configured to estimate second target delay information according to the second target signal. The first target latency information includes at least one of: first delay information and second delay information; a sum of the first delay information and the second delay information; the first delay information is channel delay information between the second device and the third device, and the second delay information is channel delay information between the first device and the second device; the second target delay information is channel delay information between the first device and the third device.

In one possible implementation, the first target configuration information may include: first configuration information and second configuration information; the first configuration information is used for configuring a mode of generating the first target signal by the second equipment, and the second configuration information is used for configuring parameters of the first target signal. And/or the second target configuration information comprises any one of the following: third configuration information and fourth configuration information; third configuration information and fifth configuration information; wherein the second target signal comprises the first signal or the second signal; the third configuration information is used for configuring a mode of the third device for sending the second target signal, the fourth configuration information is used for configuring parameters of the first signal, and the fifth configuration information is used for configuring parameters of the second signal.

In a possible implementation manner, the first target configuration information and the second target configuration information are configured by any one of the following devices: the first device, the second device, the third device and the fourth device; wherein the fourth device is: network node devices other than the first device, the second device and the third device.

In a possible implementation manner, the estimation module 112 may specifically be configured to: under the condition that the first target signal is generated by the second equipment through a regeneration forwarding mode, acquiring first delay information and estimating second delay information according to the first target signal; or in the case that the first target signal is generated by the second device through a direct forwarding mode, estimating the sum of the first delay information and the second delay information according to the first target signal.

In a possible implementation manner, the estimation module 112 may be specifically configured to obtain first delay information and estimate second delay information according to the first target signal and the first time information; wherein the first target signal includes first time information; the first time information is used to indicate any one of: the second device receives the receiving time of the first signal sent by the third device; the first signal is used for estimating first delay information; the second device transmits a transmission time of the first target signal.

In a possible implementation manner, the estimating module 112 may be specifically configured to estimate a sum of the first delay information and the second delay information according to the first target signal and the second time information; wherein the first target signal comprises second time information; the second time information is used for indicating the transmission time of the third device for transmitting the first signal, and the first signal is used for estimating the first delay information.

In a possible implementation manner, the estimation module 112 may be specifically configured to determine the first transmitting device of the first target signal according to first information in the first target signal, where the first information includes at least one of the following: ID information of the first transmitting device, device information of the first transmitting device; and estimating the first target delay information in case the first transmitting device is the second device.

In a possible implementation, the second target signal may include a first signal or a second signal, where the first signal or the second signal is used to estimate the second target delay information. The receiving module 111 may be specifically configured to determine a sending manner of the second target signal according to the second target configuration information; and receiving the first signal or the second signal according to the transmission mode of the second target signal.

In a possible implementation manner, the estimation module 112 may be specifically configured to estimate the second target delay information according to the second target signal and the third time information; wherein the second target signal includes third time information; the third time information is used to indicate a transmission time at which the third device transmits the second target signal.

In a possible implementation manner, the estimation module 112 may be specifically configured to determine the second transmitting device of the second target signal according to second information in the second target signal, where the second information includes at least one of the following: ID information of the second transmitting device, device information of the second transmitting device; and estimating second target delay information in case that the second transmitting device is a third device.

In a possible implementation manner, the delay information estimating apparatus 110 may further include a reporting module. The reporting module may be configured to report the first target delay information and the second target delay information according to the sixth configuration information after the estimating module 112 estimates the second target delay information according to the second target signal; wherein the sixth configuration information is used for configuring at least one of the following: reporting mode of time delay information, reporting time frequency resource of time delay information, and carrying mode of time delay information.

In one possible implementation, the first delay information may be used to indicate a first channel transmission delay and a first channel delay spread, the second delay information may be used to indicate a second channel transmission delay and a second channel delay spread, and the second target delay information may be used to indicate a third channel transmission delay and a third channel delay spread. The reporting module may be specifically configured to: reporting the first channel transmission delay, the first channel delay spread, the second channel transmission delay, the second channel delay spread, the third channel transmission delay and the third channel delay spread respectively; or respectively reporting the sum of the first channel transmission delay and the second channel transmission delay, the sum of the first channel delay spread and the second channel delay spread, the third channel transmission delay and the third channel delay spread; or reporting the sum of the first channel transmission delay and the second channel transmission delay and the minimum channel transmission delay in the third channel transmission delay, and reporting the sum of the first channel delay spread and the second channel delay spread and the maximum channel delay spread in the third channel delay spread.

In the delay information estimating apparatus provided in the embodiment of the present application, since the delay information estimating apparatus may estimate the channel delay information between the second device and the third device, the channel delay information between the delay information estimating apparatus and the second device, and the channel delay information between the delay information estimating apparatus and the third device, respectively, based on the configuration information for performing channel delay information estimation, the first target signal transmitted by the second device, and the second target signal transmitted by the third device, the delay information estimating apparatus may effectively estimate the delay of the cascade channel (i.e., the channel between the delay information estimating apparatus and the second device, and the channel between the second device and the third device), and the delay of the direct link channel (i.e., the channel between the delay information estimating apparatus and the third device), so that the interference of the direct link interference signal may be accurately eliminated by the estimated channel delay.

The delay information estimating device in the embodiment of the application may be an electronic device, for example, an electronic device with an operating system, or may be a component in the electronic device, for example, an integrated circuit or a chip. The electronic device may be a terminal, or may be other devices than a terminal. By way of example, terminals may include, but are not limited to, the types of terminals 11 listed above, other devices may be servers, network attached storage (Network Attached Storage, NAS), etc., and embodiments of the application are not specifically limited.

The delay information estimation device provided by the embodiment of the present application can implement each process implemented by the first device side method embodiment, and achieve the same technical effect, so that repetition is avoided, and no further description is provided here.

Referring to fig. 12, an embodiment of the present application provides a delay information estimating apparatus 120, where the delay information estimating apparatus 120 may include a receiving module 121 and a processing module 122. The receiving module 121 may be configured to receive the first signal sent by the third device according to fourth configuration information, where the fourth configuration information is used to configure parameters of the first signal. The processing module 122 may be configured to generate a first target signal according to the first configuration information, the second configuration information, and the first signal, and send the first target signal to the first device; the first configuration information is used for configuring the mode of generating the first target signal by the delay information estimation device 120, and the second configuration information is used for configuring the parameters of the first target signal; the first signal and the first target signal are both used for channel delay information estimation.

In a possible implementation manner, the processing module 122 may specifically be configured to generate, according to the first configuration information, the second configuration information, and the first signal, the first target signal by using a regenerative forwarding manner, and estimate first delay information according to the first signal and second time information, where the second time information is used to indicate a time when the third device sends the first signal, and the first delay information is channel delay information between the delay information estimating apparatus 120 and the third device; and transmitting a first target signal to the first device according to the first delay information and the second configuration information. Or, the processing module 122 may specifically be configured to generate the first target signal according to the first configuration information, the second configuration information, and the first signal by using a direct forwarding manner, and directly send the first target signal to the first device.

In a possible implementation manner, the first target signal may include at least one of the following: ID information of the delay information estimating apparatus 120, device information of the delay information estimating apparatus 120.

In a possible implementation manner, in a case where the delay information estimating apparatus 120 generates the first target signal by using the regenerative forwarding manner, the first target signal is at least one of the following: a signal including ID information of the first device, a signal including device information of the first device, a signal scrambled by the first device ID, a first preamble sequence, or a first reference signal. Wherein the first preamble sequence comprises at least one of: ZC sequence, m sequence, gold sequence, walsh sequence, chaos sequence, baker sequence, CA-ZAC sequence, LCZ sequence; the first reference signal is: the first device pre-configures the delay estimation signal.

In the delay information estimating apparatus provided in the embodiment of the present application, the delay information estimating apparatus may generate the first target signal for performing channel delay information estimation according to the first configuration information for configuring the manner in which the delay information estimating apparatus generates the first target signal, the second configuration information for configuring the parameter of the first target signal, and the first signal received from the third device, and send the first target signal to the first device, so that the first device may effectively estimate the channel delay information through the first target signal after receiving the first target signal.

The delay information estimation device provided by the embodiment of the present application can implement each process implemented by the second device side method embodiment, and achieve the same technical effect, so that repetition is avoided, and no further description is provided here.

Referring to fig. 13, an embodiment of the present application provides a delay information estimating apparatus 130, where the delay information estimating apparatus 130 may include a transmitting module 131. A transmitting module 131, configured to transmit a second target signal to the first device and transmit a first signal to the second device according to the third configuration information, the fourth configuration information, and the fifth configuration information; the second target signal comprises a first signal or a second signal, and is used for estimating channel delay information; the third configuration information is used for configuring the manner in which the delay information estimating device 130 transmits the second target signal, the fourth configuration information is used for configuring the parameters of the first signal, and the fifth configuration information is used for configuring the parameters of the second signal.

In one possible implementation, the second target signal may be a second preamble sequence or a second reference signal; wherein the second preamble sequence comprises at least one of: ZC sequence, m sequence, gold sequence, walsh sequence, chaos sequence, baker sequence, CA-ZAC sequence, LCZ sequence; the second reference signal is: at least one of the first device and the second device pre-configures a delay estimation signal.

In one possible implementation, the second target signal comprises the first signal. The sending module 131 may be specifically configured to send the first signal to the first device and the second device by using a broadcast mode or a multicast mode according to the third configuration information, the fourth configuration information, and the fifth configuration information. Wherein the first signal includes at least one of: the ID information of the delay information estimating means 130, the device information of the delay information estimating means 130, the second time information; the second time information is used to indicate the transmission time of the first signal transmitted by the delay information estimating device 130.

In a possible implementation manner, the first signal may be at least one of the following: a signal including ID information of the first device; a signal including device information of the first device; a signal including ID information of the second device; a signal including device information of the second device; the scrambled signal is scrambled using a scrambling code common to the first device and the second device.

In one possible implementation, the second target signal comprises a second signal. The sending module 131 may specifically be configured to send, according to the third configuration information, the fourth configuration information, and the fifth configuration information, the second signal to the first device and the first signal to the second device in a unicast manner on different time-frequency resources. Wherein each of the first signal and the second signal includes at least one of: ID information of the delay information estimating device 130, and device information of the delay information estimating device 130. The first signal further includes second time information, where the second time information is used to indicate a transmission time of the first signal transmitted by the delay information estimating device 130. The second signal further includes fourth time information, which is used to indicate a transmission time of the second signal transmitted by the delay information estimating device 130.

In a possible implementation manner, the first signal may be at least one of the following: a signal comprising ID information of the second device, a signal comprising device information of the second device, a signal scrambled by the second device ID. And/or the second signal may be at least one of: a signal comprising ID information of the first device, a signal comprising device information of the first device, a signal scrambled by the first device ID.

In the delay information estimating apparatus provided in the embodiment of the present application, since the delay information estimating apparatus may send the second target signal to the first device according to the third configuration information for configuring the manner in which the delay information estimating apparatus sends the second target signal, the fourth configuration information for configuring the parameter of the first signal, and the fifth configuration information for configuring the parameter of the second signal, the second target signal may be sent to the first device, and the first signal may be sent to the second device, where the second target signal includes the first signal or the second signal, and the second target signal is used to perform channel delay information estimation, so that the first device and the second device may effectively estimate channel delay information through the received signals, respectively, after receiving the signals.

The delay information estimation device provided by the embodiment of the present application can implement each process implemented by the third device side method embodiment, and achieve the same technical effect, so that repetition is avoided, and no further description is provided here.

In connection with fig. 14, an embodiment of the present application provides a delay information estimating apparatus 140, where the delay information estimating apparatus 140 may include a configuration module 141. The configuration module 141 may be configured to configure the target configuration information, and the delay information estimating apparatus 140 may include any one of the following: the first device, the second device, the third device and the fourth device; the fourth device is: network node devices other than the first device, the second device, and the third device; the target configuration information is used for channel delay information estimation.

In a possible implementation, the target configuration information may include at least one of: the first configuration information is used for configuring a mode of generating a first target signal by the second equipment; the second configuration information is used for configuring parameters of the first target signal; the third configuration information is used for configuring a mode of sending the second target signal by the third equipment; fourth configuration information for configuring parameters of the first signal; fifth configuration information for configuring parameters of the second signal; sixth configuration information for configuring at least one of: reporting mode of time delay information, reporting time frequency resource of time delay information, and carrying mode of time delay information.

In a possible implementation manner, the manner in which the second device generates the first target signal may include any one of the following: a regenerative transfer mode and a direct transfer mode.

In a possible implementation manner, the second target signal may include at least one of the following: a first signal, a second signal; the first signal is used for the first device to estimate second target delay information and/or the first signal is used for the second device to estimate first delay information; the second signal is used by the first device to estimate second target delay information. The second target delay information is channel delay information between the first device and the third device, and the first delay information is channel delay information between the second device and the third device.

In a possible implementation, the parameters of the signal may include at least one of: the type of signal, the length of the signal, the time-frequency resources of the signal.

In a possible implementation, the target configuration information may be carried by any of the following: RRC, MAC-CE, DCI, SCI, preamble sequence.

In the delay information estimation device provided in the embodiment of the present application, since the delay information estimation device may configure target configuration information for performing channel delay information estimation, the first device, the second device, and the third device may effectively estimate delay information of a channel through the configured target configuration information.

The delay information estimation device provided by the embodiment of the application can realize each process realized by the method embodiment of the target equipment side and achieve the same technical effect, and in order to avoid repetition, the description is omitted here.

Optionally, as shown in fig. 15, the embodiment of the present application further provides a communication device 1500, including a processor 1501 and a memory 1502, where the memory 1502 stores a program or an instruction that can be executed on the processor 1501, for example, when the communication device 1500 is the first device described above, the program or the instruction when executed by the processor 1501 implements the respective processes of the first device side method embodiment, and can achieve the same technical effects. When the communication device 1500 is the second device, the program or the instructions realize the respective processes of the second device side method embodiment when executed by the processor 1501, and the same technical effects can be achieved. When the communication device 1500 is the third device, the program or the instructions realize the respective processes of the third device side method embodiment when executed by the processor 1501, and the same technical effects can be achieved. When the communication device 1500 is the target device, the program or the instruction, when executed by the processor 1501, implements the respective processes of the method embodiment on the target device side, and the same technical effects can be achieved, so that repetition is avoided, and detailed description is omitted here.

The embodiment of the application also provides communication equipment, which comprises a processor and a communication interface, wherein the communication interface is used for receiving a first target signal sent by second equipment according to first target configuration information; the processor is used for estimating first target time delay information according to the first target signal; the communication interface is further used for receiving a second target signal sent by the third device according to the second target configuration information; the processor is further used for estimating second target time delay information according to the second target signal; the first target latency information includes at least one of: first delay information and second delay information; a sum of the first delay information and the second delay information; the first delay information is channel delay information between the second device and the third device, and the second delay information is channel delay information between the first device and the second device; the second target delay information is channel delay information between the first device and the third device; or,

the processor is configured to configure the target configuration information, and the delay information estimating device includes any one of the following: the first device, the second device, the third device and the fourth device; the fourth device is: network node devices other than the first device, the second device, and the third device; the target configuration information is used for channel delay information estimation.

The communication equipment embodiment corresponds to the time delay information estimation method embodiment, and various implementation processes and implementation modes of the time delay information estimation method embodiment can be applied to the communication equipment embodiment and can achieve the same technical effects. Specifically, the communication device may be a terminal, or may be a network-side device; taking the communication device as an example of a terminal, fig. 16 is a schematic hardware structure of the terminal.

The terminal 1000 includes, but is not limited to: at least some of the components of the radio frequency unit 1001, the network module 1002, the audio output unit 1003, the input unit 1004, the sensor 1005, the display unit 1006, the user input unit 1007, the interface unit 1008, the memory 1009, and the processor 1010, etc.

Those skilled in the art will appreciate that terminal 1000 can also include a power source (e.g., a battery) for powering the various components, which can be logically connected to processor 1010 by a power management system so as to perform functions such as managing charge, discharge, and power consumption by the power management system. The terminal structure shown in fig. 16 does not constitute a limitation of the terminal, and the terminal may include more or less components than shown, or may combine some components, or may be arranged in different components, which will not be described in detail herein.

It should be understood that in the embodiment of the present application, the input unit 1004 may include a graphics processing unit (Graphics Processing Unit, GPU) 10041 and a microphone 10042, and the graphics processor 10041 processes image data of still pictures or videos obtained by an image capturing device (such as a camera) in a video capturing mode or an image capturing mode. The display unit 1006 may include a display panel 10061, and the display panel 10061 may be configured in the form of a liquid crystal display, an organic light emitting diode, or the like. The user input unit 1007 includes at least one of a touch panel 10071 and other input devices 10072. The touch panel 10071 is also referred to as a touch screen. The touch panel 10071 can include two portions, a touch detection device and a touch controller. Other input devices 10072 may include, but are not limited to, a physical keyboard, function keys (e.g., volume control keys, switch keys, etc.), a trackball, a mouse, a joystick, and so forth, which are not described in detail herein.

In this embodiment, after receiving downlink data from the network side device, the radio frequency unit 1001 may transmit the downlink data to the processor 1010 for processing; in addition, the radio frequency unit 1001 may send uplink data to the network side device. In general, the radio frequency unit 1001 includes, but is not limited to, an antenna, an amplifier, a transceiver, a coupler, a low noise amplifier, a duplexer, and the like.

The memory 1009 may be used to store software programs or instructions and various data. The memory 1009 may mainly include a first memory area storing programs or instructions and a second memory area storing data, wherein the first memory area may store an operating system, application programs or instructions (such as a sound playing function, an image playing function, etc.) required for at least one function, and the like. Further, the memory 1009 may include volatile memory or nonvolatile memory, or the memory 1009 may include both volatile and nonvolatile memory. The nonvolatile Memory may be a Read-Only Memory (ROM), a Programmable ROM (PROM), an Erasable PROM (EPROM), an Electrically Erasable EPROM (EEPROM), or a flash Memory. The volatile memory may be random access memory (Random Access Memory, RAM), static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double Data Rate SDRAM (ddr SDRAM), enhanced SDRAM (Enhanced SDRAM), synchronous DRAM (SLDRAM), and Direct RAM (DRRAM). Memory 1009 in embodiments of the present application includes, but is not limited to, these and any other suitable types of memory.

The processor 1010 may include one or more processing units; optionally, the processor 1010 integrates an application processor that primarily processes operations involving an operating system, user interface, application programs, and the like, and a modem processor that primarily processes wireless communication signals, such as a baseband processor. It will be appreciated that the modem processor described above may not be integrated into the processor 1010.

Taking terminal 1000 as an example of the first device, radio frequency unit 1001 may be configured to receive, according to the first target configuration information, a first target signal sent by the second device. The processor 1010 may be configured to estimate first target delay information based on the first target signal. The radio frequency unit 1001 may be further configured to receive a second target signal sent by the third device according to the second target configuration information. The processor 1010 may be further configured to estimate second target delay information based on the second target signal. The first target latency information includes at least one of: first delay information and second delay information; a sum of the first delay information and the second delay information; the first delay information is channel delay information between the second device and the third device, and the second delay information is channel delay information between the first device and the second device; the second target delay information is channel delay information between the first device and the third device.

In one possible implementation, the processor 1010 may be specifically configured to: under the condition that the first target signal is generated by the second equipment through a regeneration forwarding mode, acquiring first delay information and estimating second delay information according to the first target signal; or in the case that the first target signal is generated by the second device through a direct forwarding mode, estimating the sum of the first delay information and the second delay information according to the first target signal.

In a possible implementation manner, the processor 1010 may be specifically configured to obtain first delay information and estimate second delay information according to the first target signal and the first time information; wherein the first target signal includes first time information; the first time information is used to indicate any one of: the second device receives the receiving time of the first signal sent by the third device; the first signal is used for estimating first delay information; the second device transmits a transmission time of the first target signal.

In a possible implementation manner, the processor 1010 may be specifically configured to estimate a sum of the first delay information and the second delay information according to the first target signal and the second time information; wherein the first target signal comprises second time information; the second time information is used for indicating the transmission time of the third device for transmitting the first signal, and the first signal is used for estimating the first delay information.

In a possible implementation manner, the processor 1010 may be specifically configured to determine, according to first information in the first target signal, a first transmitting device of the first target signal, where the first information includes at least one of: ID information of the first transmitting device, device information of the first transmitting device; and estimating the first target delay information in case the first transmitting device is the second device.

In a possible implementation, the second target signal may include a first signal or a second signal, where the first signal or the second signal is used to estimate the second target delay information. The radio frequency unit 1001 may be specifically configured to determine, according to the second target configuration information, a transmission manner of the second target signal; and receiving the first signal or the second signal according to the transmission mode of the second target signal.

In a possible implementation manner, the processor 1010 may be specifically configured to estimate the second target delay information according to the second target signal and the third time information; wherein the second target signal includes third time information; the third time information is used to indicate a transmission time at which the third device transmits the second target signal.

In a possible implementation manner, the processor 1010 may be specifically configured to determine, according to second information in the second target signal, a second transmitting device of the second target signal, where the second information includes at least one of the following: ID information of the second transmitting device, device information of the second transmitting device; and estimating second target delay information in case that the second transmitting device is a third device.

In a possible implementation manner, the processor 1010 may be further configured to report the first target delay information and the second target delay information according to the sixth configuration information after estimating the second target delay information according to the second target signal; wherein the sixth configuration information is used for configuring at least one of the following: reporting mode of time delay information, reporting time frequency resource of time delay information, and carrying mode of time delay information.

In one possible implementation, the first delay information may be used to indicate a first channel transmission delay and a first channel delay spread, the second delay information may be used to indicate a second channel transmission delay and a second channel delay spread, and the second target delay information may be used to indicate a third channel transmission delay and a third channel delay spread. The processor 1010 may be specifically configured to: reporting the first channel transmission delay, the first channel delay spread, the second channel transmission delay, the second channel delay spread, the third channel transmission delay and the third channel delay spread respectively; or respectively reporting the sum of the first channel transmission delay and the second channel transmission delay, the sum of the first channel delay spread and the second channel delay spread, the third channel transmission delay and the third channel delay spread; or reporting the sum of the first channel transmission delay and the second channel transmission delay and the minimum channel transmission delay in the third channel transmission delay, and reporting the sum of the first channel delay spread and the second channel delay spread and the maximum channel delay spread in the third channel delay spread.

In the terminal provided in the embodiment of the present application, since the terminal may estimate the channel delay information between the second device and the third device, the channel delay information between the delay information estimating apparatus and the second device, and the channel delay information between the delay information estimating apparatus and the third device, respectively, based on the configuration information for performing channel delay information estimation, the first target signal transmitted by the second device, and the second target signal transmitted by the third device, the terminal may effectively estimate the delay of the cascade channel (i.e., the channel between the delay information estimating apparatus and the second device, and the channel between the second device and the third device), and the delay of the direct link channel (i.e., the channel between the delay information estimating apparatus and the third device), so that the interference of the direct link interference signal may be accurately eliminated by estimating the obtained channel delay.

The terminal provided in the embodiment of the present application can implement each process implemented by the first device side method embodiment, and achieve the same technical effects, so that repetition is avoided, and no further description is given here.

Taking terminal 1000 as an example of the second device, radio frequency unit 1001 may be configured to receive the first signal sent by the third device according to fourth configuration information, where the fourth configuration information is used to configure parameters of the first signal. A processor 1010, configured to generate a first target signal according to the first configuration information, the second configuration information, and the first signal, and send the first target signal to the first device; the first configuration information is used for configuring the mode of generating the first target signal by the terminal 1000, and the second configuration information is used for configuring the parameters of the first target signal; the first signal and the first target signal are both used for channel delay information estimation.

In a possible implementation manner, the processor 1010 may be specifically configured to generate a first target signal according to the first configuration information, the second configuration information, and the first signal by using a regenerative forwarding manner, and estimate first delay information according to the first signal and second time information, where the second time information is used to indicate a time when the third device sends the first signal, and the first delay information is channel delay information between the terminal 1000 and the third device; and transmitting a first target signal to the first device according to the first delay information and the second configuration information. Alternatively, the processor 1010 may be specifically configured to generate the first target signal by using a direct forwarding manner according to the first configuration information, the second configuration information, and the first signal, and directly send the first target signal to the first device.

In a possible implementation manner, the first target signal may include at least one of the following: ID information of terminal 1000, device information of terminal 1000.

In a possible implementation manner, in a case where terminal 1000 generates the first target signal by a regenerative forwarding manner, the first target signal is at least one of the following: a signal including ID information of the first device, a signal including device information of the first device, a signal scrambled by the first device ID, a first preamble sequence, or a first reference signal. Wherein the first preamble sequence comprises at least one of: ZC sequence, m sequence, gold sequence, walsh sequence, chaos sequence, baker sequence, CA-ZAC sequence, LCZ sequence; the first reference signal is: the first device pre-configures the delay estimation signal.

In the terminal provided in the embodiment of the present application, since the terminal may generate the first target signal for performing channel delay information estimation according to the first configuration information for configuring the manner in which the terminal generates the first target signal, the second configuration information for configuring the parameter of the first target signal, and the first signal received from the third device, and send the first target signal to the first device, the first device may effectively estimate the channel delay information through the first target signal after receiving the first target signal.

In practical implementation, in the case where terminal 1000 is the second device, rf unit 1001 in terminal 1000 is actually an antenna unit.

The terminal provided in the embodiment of the present application can implement each process implemented by the second device side method embodiment, and achieve the same technical effects, so that repetition is avoided, and no further description is given here.

Taking terminal 1000 as the third device, radio frequency unit 1001 may be configured to send a second target signal to the first device and send a first signal to the second device according to the third configuration information, the fourth configuration information, and the fifth configuration information; the second target signal comprises a first signal or a second signal, and is used for estimating channel delay information; the third configuration information is used to configure the manner in which terminal 1000 transmits the second target signal, the fourth configuration information is used to configure the parameters of the first signal, and the fifth configuration information is used to configure the parameters of the second signal.

In one possible implementation, the second target signal comprises the first signal. The radio frequency unit 1001 may specifically be configured to send, according to the third configuration information, the fourth configuration information, and the fifth configuration information, a first signal to the first device and the second device in a broadcast manner or a multicast manner. Wherein the first signal includes at least one of: ID information of terminal 1000, device information of terminal 1000, second time information; the second time information is used to indicate a transmission time at which the terminal 1000 transmits the first signal.

In one possible implementation, the second target signal comprises a second signal. The radio frequency unit 1001 may specifically be configured to send, according to the third configuration information, the fourth configuration information, and the fifth configuration information, a second signal to the first device and send the first signal to the second device in a unicast manner on different time-frequency resources. Wherein each of the first signal and the second signal includes at least one of: ID information of terminal 1000, device information of terminal 1000. The first signal further includes second time information, where the second time information is used to indicate a transmission time of the terminal 1000 for transmitting the first signal. The second signal further includes fourth time information, where the fourth time information is used to indicate a transmission time of the terminal 1000 for transmitting the second signal.

In the terminal provided in the embodiment of the present application, since the terminal may send the second target signal to the first device according to the third configuration information for configuring the manner in which the terminal sends the second target signal, the fourth configuration information for configuring the parameter of the first signal, and the fifth configuration information for configuring the parameter of the second signal, and send the first signal to the second device, where the second target signal includes the first signal or the second signal, and the second target signal is used to perform channel delay information estimation, the first device and the second device may effectively estimate the channel delay information through the received signals after receiving the signals, respectively.

The terminal provided in the embodiment of the present application can implement each process implemented by the third device side method embodiment, and achieve the same technical effects, so that repetition is avoided, and no further description is given here.

Taking terminal 1000 as an example of the target device, processor 1010 may be configured to configure target configuration information, terminal 1000 may include any of the following: the first device, the second device, the third device and the fourth device; the fourth device is: network node devices other than the first device, the second device, and the third device; the target configuration information is used for channel delay information estimation.

In the terminal provided in the embodiment of the present application, since the terminal may configure the target configuration information for performing channel delay information estimation, the first device, the second device, and the third device may effectively estimate the delay information of the channel according to the configured target configuration information.

The terminal provided by the embodiment of the present application can implement each process implemented by the target device side method embodiment, and achieve the same technical effect, so that repetition is avoided, and no further description is provided here.

Taking the above communication device as a network side device as an example, fig. 17 is a schematic hardware structure of the network side device. As shown in fig. 17, the network-side device 1700 includes: an antenna 171, a radio frequency device 172, a baseband device 173, a processor 174, and a memory 175. The antenna 171 is connected to a radio frequency device 172. In the uplink direction, the radio frequency device 172 receives information via the antenna 171, and transmits the received information to the baseband device 173 for processing. In the downlink direction, the baseband device 173 processes information to be transmitted, and transmits the processed information to the radio frequency device 172, and the radio frequency device 172 processes the received information and transmits the processed information through the antenna 171.

The method performed by the network-side device in the above embodiment may be implemented in the baseband apparatus 173, and the baseband apparatus 173 includes a baseband processor.

The baseband apparatus 173 may, for example, include at least one baseband board, where a plurality of chips are disposed, as shown in fig. 17, where one chip, for example, a baseband processor, is connected to the memory 175 through a bus interface, so as to call a program in the memory 175 to perform the network device operation shown in the above method embodiment.

The network-side device may also include a network interface 176, such as a common public radio interface (common public radio interface, CPRI).

Specifically, the network side device 1700 of the embodiment of the present invention further includes: instructions or programs stored in the memory 175 and executable on the processor 174, the processor 174 invokes the instructions or programs in the memory 175 to perform the methods performed by the modules shown in fig. 11-14 to achieve the same technical result, and are not repeated here.

Taking the network side device 1700 as the first device, the radio frequency device 172 may be configured to receive, according to the first target configuration information, a first target signal sent by the second device. The processor 174 may be configured to estimate first target delay information based on the first target signal. The radio frequency device 172 may be further configured to receive a second target signal sent by the third device according to the second target configuration information. The processor 174 may be further configured to estimate second target delay information based on the second target signal. The first target latency information includes at least one of: first delay information and second delay information; a sum of the first delay information and the second delay information; the first delay information is channel delay information between the second device and the third device, and the second delay information is channel delay information between the first device and the second device; the second target delay information is channel delay information between the first device and the third device.

In one possible implementation, the processor 174 may be specifically configured to: under the condition that the first target signal is generated by the second equipment through a regeneration forwarding mode, acquiring first delay information and estimating second delay information according to the first target signal; or in the case that the first target signal is generated by the second device through a direct forwarding mode, estimating the sum of the first delay information and the second delay information according to the first target signal.

In one possible implementation, the processor 174 may be specifically configured to obtain first delay information and estimate second delay information according to the first target signal and the first time information; wherein the first target signal includes first time information; the first time information is used to indicate any one of: the second device receives the receiving time of the first signal sent by the third device; the first signal is used for estimating first delay information; the second device transmits a transmission time of the first target signal.

In one possible implementation, the processor 174 may be specifically configured to estimate a sum of the first delay information and the second delay information according to the first target signal and the second time information; wherein the first target signal comprises second time information; the second time information is used for indicating the transmission time of the third device for transmitting the first signal, and the first signal is used for estimating the first delay information.

In a possible implementation manner, the processor 174 may specifically be configured to determine the first transmitting device of the first target signal according to first information in the first target signal, where the first information includes at least one of the following: ID information of the first transmitting device, device information of the first transmitting device; and estimating the first target delay information in case the first transmitting device is the second device.

In a possible implementation, the second target signal may include a first signal or a second signal, where the first signal or the second signal is used to estimate the second target delay information. The radio frequency device 172 may be specifically configured to determine a transmission manner of the second target signal according to the second target configuration information; and receiving the first signal or the second signal according to the transmission mode of the second target signal.

In one possible implementation, the processor 174 may be specifically configured to estimate second target delay information based on the second target signal and the third time information; wherein the second target signal includes third time information; the third time information is used to indicate a transmission time at which the third device transmits the second target signal.

In a possible implementation manner, the processor 174 may specifically be configured to determine the second transmitting device of the second target signal according to second information in the second target signal, where the second information includes at least one of the following: ID information of the second transmitting device, device information of the second transmitting device; and estimating second target delay information in case that the second transmitting device is a third device.

In a possible implementation manner, the processor 174 may be further configured to report the first target delay information and the second target delay information according to the sixth configuration information after estimating the second target delay information according to the second target signal; wherein the sixth configuration information is used for configuring at least one of the following: reporting mode of time delay information, reporting time frequency resource of time delay information, and carrying mode of time delay information.

In one possible implementation, the first delay information may be used to indicate a first channel transmission delay and a first channel delay spread, the second delay information may be used to indicate a second channel transmission delay and a second channel delay spread, and the second target delay information may be used to indicate a third channel transmission delay and a third channel delay spread. The processor 174 may be specifically configured to: reporting the first channel transmission delay, the first channel delay spread, the second channel transmission delay, the second channel delay spread, the third channel transmission delay and the third channel delay spread respectively; or respectively reporting the sum of the first channel transmission delay and the second channel transmission delay, the sum of the first channel delay spread and the second channel delay spread, the third channel transmission delay and the third channel delay spread; or reporting the sum of the first channel transmission delay and the second channel transmission delay and the minimum channel transmission delay in the third channel transmission delay, and reporting the sum of the first channel delay spread and the second channel delay spread and the maximum channel delay spread in the third channel delay spread.

In the network side device provided in the embodiment of the present application, since the network side device may estimate, based on the configuration information for performing channel delay information estimation, the first target signal sent by the second device and the second target signal sent by the third device, the channel delay information between the second device and the third device, the channel delay information between the delay information estimation device and the second device, and the channel delay information between the delay information estimation device and the third device, respectively, the network side device may effectively estimate the delay of the cascade channel (i.e., the channel between the delay information estimation device and the second device, and the channel between the second device and the third device) and the delay of the direct link channel (i.e., the channel between the delay information estimation device and the third device), so that the interference of the direct link interference signal may be accurately eliminated by the estimated channel delay.

The network side device provided in the embodiment of the present application can implement each process implemented by the first device side method embodiment, and achieve the same technical effects, so that repetition is avoided, and no further description is given here.

Taking the network side device 1700 as the second device, the radio frequency device 172 may be configured to receive the first signal sent by the third device according to fourth configuration information, where the fourth configuration information is used to configure parameters of the first signal. A processor 174 operable to generate a first target signal based on the first configuration information, the second configuration information, and the first signal, and to transmit the first target signal to the first device; the first configuration information is used for configuring a mode of generating the first target signal by the network side device 1700, and the second configuration information is used for configuring parameters of the first target signal; the first signal and the first target signal are both used for channel delay information estimation.

In a possible implementation manner, the processor 174 may be specifically configured to generate a first target signal according to the first configuration information, the second configuration information, and the first signal by using a regenerative forwarding manner, and estimate first delay information according to the first signal and second time information, where the second time information is used to indicate a time when the third device sends the first signal, and the first delay information is channel delay information between the network side device 1700 and the third device; and transmitting a first target signal to the first device according to the first delay information and the second configuration information. Alternatively, the processor 174 may specifically be configured to generate the first target signal by using a direct forwarding manner according to the first configuration information, the second configuration information, and the first signal, and directly send the first target signal to the first device.

In a possible implementation manner, the first target signal may include at least one of the following: ID information of the network side device 1700, device information of the network side device 1700.

In a possible implementation manner, in a case where the network side device 1700 generates the first target signal by the regenerative forwarding manner, the first target signal is at least one of the following: a signal including ID information of the first device, a signal including device information of the first device, a signal scrambled by the first device ID, a first preamble sequence, or a first reference signal. Wherein the first preamble sequence comprises at least one of: ZC sequence, m sequence, gold sequence, walsh sequence, chaos sequence, baker sequence, CA-ZAC sequence, LCZ sequence; the first reference signal is: the first device pre-configures the delay estimation signal.

In the network side device provided in the embodiment of the present application, since the network side device may generate the first target signal for performing channel delay information estimation and send the first target signal to the first device according to the first configuration information for configuring the manner in which the network side device generates the first target signal, the second configuration information for configuring the parameter of the first target signal, and the first signal received from the third device, the first device may effectively estimate the channel delay information through the first target signal after receiving the first target signal.

The network side device provided in the embodiment of the present application can implement each process implemented by the second device side method embodiment, and achieve the same technical effects, so that repetition is avoided, and no further description is given here.

Taking the network side device 1700 as the third device, the radio frequency device 172 may be configured to send a second target signal to the first device and send a first signal to the second device according to the third configuration information, the fourth configuration information, and the fifth configuration information; the second target signal comprises a first signal or a second signal, and is used for estimating channel delay information; the third configuration information is used to configure the manner in which the network side device 1700 sends the second target signal, the fourth configuration information is used to configure the parameters of the first signal, and the fifth configuration information is used to configure the parameters of the second signal.

In one possible implementation, the second target signal comprises the first signal. The radio frequency device 172 may be specifically configured to send the first signal to the first device and the second device by using a broadcast manner or a multicast manner according to the third configuration information, the fourth configuration information, and the fifth configuration information. Wherein the first signal includes at least one of: ID information of the network side device 1700, device information of the network side device 1700, second time information; the second time information is used to indicate a transmission time at which the network-side device 1700 transmits the first signal.

In one possible implementation, the second target signal comprises a second signal. The radio frequency device 172 may be specifically configured to send, according to the third configuration information, the fourth configuration information, and the fifth configuration information, the second signal to the first device and the first signal to the second device through unicast on different time-frequency resources. Wherein each of the first signal and the second signal includes at least one of: ID information of the network side device 1700, device information of the network side device 1700. The first signal further includes second time information, where the second time information is used to instruct the network side device 1700 to send the sending time of the first signal. The second signal further includes fourth time information, where the fourth time information is used to indicate a transmission time of the second signal transmitted by the network side device 1700.

In the network side device provided in the embodiment of the present application, since the network side device may send, to the first device, the second target signal and send, to the second device, the first signal or the second signal according to the third configuration information for configuring the manner in which the network side device sends the second target signal, the fourth configuration information for configuring the parameter of the first signal, and the fifth configuration information for configuring the parameter of the second signal, where the second target signal includes the first signal or the second signal, and the second target signal is used to perform channel delay information estimation, the first device and the second device may effectively estimate channel delay information through the received signals after receiving the signals, respectively.

The network side device provided in the embodiment of the present application can implement each process implemented by the third device side method embodiment, and achieve the same technical effects, so that repetition is avoided, and no further description is given here.

Taking the network side device 1700 as an example of the target device, the processor 174 may be configured to configure target configuration information, where the network side device 1700 may include any one of the following: the first device, the second device, the third device and the fourth device; the fourth device is: network node devices other than the first device, the second device, and the third device; the target configuration information is used for channel delay information estimation.

In the network side device provided in the embodiment of the present application, since the network side device may configure target configuration information for performing channel delay information estimation, the first device, the second device, and the third device may effectively estimate delay information of a channel according to the configured target configuration information.

The network side device provided in the embodiment of the present application can implement each process implemented by the target device side method embodiment, and achieve the same technical effects, so that repetition is avoided, and no further description is given here.

The embodiment of the present application further provides a readable storage medium, where a program or an instruction is stored on the readable storage medium, and when the program or the instruction is executed by a processor, the program or the instruction implements each process of the above-mentioned delay information estimation method embodiment, and the same technical effects can be achieved, so that repetition is avoided, and no further description is provided herein.

Wherein the processor is a processor in the terminal described in the above embodiment. The readable storage medium includes computer readable storage medium such as computer readable memory ROM, random access memory RAM, magnetic or optical disk, etc.

The embodiment of the application further provides a chip, the chip includes a processor and a communication interface, the communication interface is coupled with the processor, and the processor is configured to run a program or an instruction, implement each process of the above-mentioned delay information estimation method embodiment, and achieve the same technical effect, so that repetition is avoided, and no further description is provided here.

It should be understood that the chips referred to in the embodiments of the present application may also be referred to as system-on-chip chips, or the like.

The embodiments of the present application further provide a computer program/program product, where the computer program/program product is stored in a storage medium, and the computer program/program product is executed by at least one processor to implement each process of the above-mentioned embodiments of the delay information estimation method, and the same technical effects can be achieved, so that repetition is avoided, and details are not repeated here.

The embodiment of the application also provides a communication system, which comprises: the first device, the second device, the third device, and the target device described in the above embodiments. The communication system can realize the processes of the above-mentioned delay information estimation method embodiment, and can achieve the same technical effects, and in order to avoid repetition, the description is omitted here.

It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element. Furthermore, it should be noted that the scope of the methods and apparatus in the embodiments of the present application is not limited to performing the functions in the order shown or discussed, but may also include performing the functions in a substantially simultaneous manner or in an opposite order depending on the functions involved, e.g., the described methods may be performed in an order different from that described, and various steps may also be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.

From the above description of the embodiments, it will be clear to those skilled in the art that the above-described embodiment method may be implemented by means of software plus a necessary general hardware platform, but of course may also be implemented by means of hardware, but in many cases the former is a preferred embodiment. Based on such understanding, the technical solutions of the present application may be embodied essentially or in a part contributing to the prior art in the form of a computer software product stored in a storage medium (such as ROM/RAM, magnetic disk, optical disk), comprising several instructions for causing a terminal (which may be a mobile phone, a computer, a server, an air conditioner, or a network device, etc.) to perform the method described in the embodiments of the present application.

The embodiments of the present application have been described above with reference to the accompanying drawings, but the present application is not limited to the above-described embodiments, which are merely illustrative and not restrictive, and many forms may be made by those of ordinary skill in the art without departing from the spirit of the present application and the scope of the claims, which are also within the protection of the present application.

Claims

1. A method for estimating delay information, the method comprising:

the first equipment receives a first target signal sent by the second equipment according to the first target configuration information, and estimates first target time delay information according to the first target signal;

the first device receives a second target signal sent by a third device according to second target configuration information, and estimates second target time delay information according to the second target signal;

the first target delay information includes at least one of:

first delay information and second delay information;

a sum of the first delay information and the second delay information;

the first delay information is channel delay information between the second device and the third device, and the second delay information is channel delay information between the first device and the second device; the second target delay information is channel delay information between the first device and the third device.

2. The method of claim 1, wherein the step of determining the position of the substrate comprises,

the first target configuration information includes: first configuration information and second configuration information;

the first configuration information is used for configuring a mode of generating the first target signal by the second equipment, and the second configuration information is used for configuring parameters of the first target signal;

And/or the number of the groups of groups,

the second target configuration information includes any one of:

third configuration information and fourth configuration information;

third configuration information and fifth configuration information;

wherein the second target signal comprises a first signal or a second signal; the third configuration information is used for configuring a mode of the third device for transmitting the second target signal, the fourth configuration information is used for configuring parameters of the first signal, and the fifth configuration information is used for configuring parameters of the second signal.

3. The method of claim 1 or 2, wherein the first target configuration information and the second target configuration information are each configured by any one of: the first device, the second device, the third device, and the fourth device;

wherein the fourth device is: network node devices other than the first device, the second device and the third device.

4. A method according to any one of claim 1 to 3, wherein,

the estimating the first target delay information according to the first target signal includes:

when the first target signal is generated by the second device through a regeneration forwarding mode, the first device acquires the first delay information and estimates the second delay information according to the first target signal;

Or,

and under the condition that the first target signal is generated by the second equipment through a direct forwarding mode, the first equipment estimates the sum of the first delay information and the second delay information according to the first target signal.

5. The method of claim 4, wherein the first device obtaining the first delay information and estimating the second delay information from the first target signal comprises:

the first device obtains the first time delay information and estimates the second time delay information according to the first target signal and the first time information;

wherein the first target signal includes the first time information;

the first time information is used to indicate any one of the following:

the second device receives the receiving time of the first signal sent by the third device; the first signal is used for estimating the first delay information;

the second device transmits a transmission time of the first target signal.

6. The method of claim 4, wherein the first device estimating the sum of the first delay information and the second delay information from the first target signal comprises:

The first device estimates the sum of the first time delay information and the second time delay information according to the first target signal and the second time information;

wherein the first target signal includes the second time information;

the second time information is used for indicating the sending time of the third device for sending a first signal, and the first signal is used for estimating the first time delay information.

7. A method according to any one of claims 1 to 3, wherein said estimating first target delay information from said first target signal comprises:

the first device determines a first transmitting device of the first target signal according to first information in the first target signal, wherein the first information comprises at least one of the following: identification ID information of the first transmitting device and device information of the first transmitting device;

in the case that the first transmitting device is the second device, the first device estimates the first target delay information.

8. A method according to any of claims 1 to 3, wherein the second target signal comprises a first signal or a second signal, the first signal or the second signal being used to estimate the second target delay information;

The first device receives a second target signal sent by a third device according to second target configuration information, and the second target signal comprises:

the first device determines a sending mode of the second target signal according to the second target configuration information;

the first device receives the first signal or the second signal according to the sending mode of the second target signal.

9. A method according to any one of claims 1 to 3, wherein said estimating second target delay information from said second target signal comprises:

the first device estimates the second target time delay information according to the second target signal and third time information;

wherein the second target signal includes the third time information;

the third time information is used for indicating the sending time of the second target signal sent by the third device.

10. A method according to any one of claims 1 to 3, wherein said estimating second target delay information from said second target signal comprises:

the first device determines a second transmitting device of the second target signal according to second information in the second target signal, wherein the second information comprises at least one of the following: the ID information of the second sending equipment and the equipment information of the second sending equipment;

And in the case that the second transmitting device is the third device, the first device estimates the second target delay information.

11. A method according to any one of claims 1 to 3, wherein after estimating second target delay information from the second target signal, the method further comprises:

the first device reports the first target time delay information and the second target time delay information according to sixth configuration information;

wherein the sixth configuration information is used for configuring at least one of the following: reporting mode of time delay information, reporting time frequency resource of time delay information, and carrying mode of time delay information.

12. The method of claim 11, wherein the first delay information is used to indicate a first channel transmission delay and a first channel delay spread, the second delay information is used to indicate a second channel transmission delay and a second channel delay spread, and the second target delay information is used to indicate a third channel transmission delay and a third channel delay spread;

the reporting the first target time delay information and the second target time delay information includes:

respectively reporting the first channel transmission delay, the first channel delay spread, the second channel transmission delay spread, the second channel delay spread, the third channel transmission delay spread and the third channel delay spread;

Or,

reporting the sum of the first channel transmission delay and the second channel transmission delay, the sum of the first channel delay spread and the second channel delay spread, the third channel transmission delay and the third channel delay spread respectively;

or,

reporting the sum of the first channel transmission delay and the second channel transmission delay and the minimum channel transmission delay in the third channel transmission delay; and reporting the sum of the first channel delay spread and the second channel delay spread and the maximum channel delay spread in the third channel delay spread.

13. A method for estimating delay information, the method comprising:

the second device receives a first signal sent by the third device according to fourth configuration information, wherein the fourth configuration information is used for configuring parameters of the first signal;

the second device generates a first target signal according to the first configuration information, the second configuration information and the first signal, and sends the first target signal to the first device; the first configuration information is used for configuring a mode of generating the first target signal by the second equipment, and the second configuration information is used for configuring parameters of the first target signal;

The first signal and the first target signal are both used for channel delay information estimation.

14. The method of claim 13, wherein the second device generating a first target signal from the first configuration information, the second configuration information, and the first signal, and transmitting the first target signal to the first device, comprises:

the second device generates the first target signal in a regeneration forwarding mode according to the first configuration information, the second configuration information and the first signal, and estimates first delay information according to the first signal and the second time information; the second time information is used for indicating the time when the third device sends the first signal, and the first time delay information is channel time delay information between the second device and the third device;

the second device sends the first target signal to the first device according to the first delay information and the second configuration information;

or,

the second device generates the first target signal in a direct forwarding mode according to the first configuration information, the second configuration information and the first signal, and directly sends the first target signal to the first device.

15. The method according to claim 13 or 14, wherein the first target signal comprises at least one of: ID information of the second device, device information of the second device.

16. The method of claim 15, wherein in the case where the second device generates the first target signal by the regenerative forwarding method, the first target signal is at least one of: a signal including ID information of the first device, a signal including device information of the first device, a signal scrambled by the first device ID, a first preamble sequence, or a first reference signal;

wherein the first preamble sequence comprises at least one of: ZC sequence, m sequence, gold sequence, walsh sequence, chaos sequence, barker sequence, cross envelope zero auto-correlation CA-ZAC sequence, low correlation LCZ sequence;

the first reference signal is: the first device preconfigured a delay estimation signal.

17. A method for estimating delay information, the method comprising:

the third device sends a second target signal to the first device and sends a first signal to the second device according to the third configuration information, the fourth configuration information and the fifth configuration information;

The second target signal comprises the first signal or the second signal, and the second target signal is used for estimating channel delay information;

the third configuration information is used for configuring a mode of the third device for transmitting the second target signal, the fourth configuration information is used for configuring parameters of the first signal, and the fifth configuration information is used for configuring parameters of the second signal.

18. The method of claim 17, wherein the second target signal is a second preamble sequence or a second reference signal;

wherein the second preamble sequence comprises at least one of: ZC sequence, m sequence, gold sequence, walsh sequence, chaos sequence, baker sequence, CA-ZAC sequence, LCZ sequence;

the second reference signal is: at least one of the first device and the second device pre-configures a delay estimation signal.

19. The method of claim 17 or 18, wherein the second target signal comprises the first signal;

the third device sends a second target signal to the first device and sends a first signal to the second device according to the third configuration information, the fourth configuration information and the fifth configuration information, and the method comprises the following steps:

The third device sends the first signal to the first device and the second device in a broadcast mode or a multicast mode according to the third configuration information, the fourth configuration information and the fifth configuration information;

wherein the first signal includes at least one of: the ID information of the third device, the device information of the third device and the second time information;

the second time information is used for indicating the transmission time of the first signal transmitted by the third device.

20. The method of claim 19, wherein the step of determining the position of the probe comprises,

the first signal is at least one of:

a signal including ID information of the first device;

a signal comprising device information of the first device;

a signal including ID information of the second device;

a signal comprising device information of the second device;

and using a scrambling code common to the first device and the second device to perform scrambling.

21. The method of claim 17 or 18, wherein the second target signal comprises the second signal;

The third device sends the second signal to the first device and sends the first signal to the second device in a unicast mode on different time-frequency resources according to the third configuration information, the fourth configuration information and the fifth configuration information;

wherein each of the first signal and the second signal includes at least one of: the ID information of the third device and the device information of the third device;

the first signal also comprises second time information, wherein the second time information is used for indicating the sending time of the third device for sending the first signal;

the second signal further includes fourth time information, where the fourth time information is used to indicate a transmission time of the third device to transmit the second signal.

22. The method of claim 21, wherein the step of determining the position of the probe is performed,

the first signal is at least one of: a signal including ID information of the second device, a signal including device information of the second device, a signal scrambled by the second device ID;

and/or the number of the groups of groups,

the second signal is at least one of: a signal comprising ID information of the first device, a signal comprising device information of the first device, a signal scrambled by the first device ID.

23. A method for estimating delay information, the method comprising:

a target device configures target configuration information, the target device comprising any one of: the first device, the second device, the third device and the fourth device; the fourth device is: network node devices other than the first device, the second device, and the third device;

the target configuration information is used for estimating channel delay information.

24. The method of claim 23, wherein the step of determining the position of the probe is performed,

the target configuration information includes at least one of:

the first configuration information is used for configuring the mode of generating a first target signal by the second equipment;

the second configuration information is used for configuring parameters of the first target signal;

third configuration information, wherein the third configuration information is used for configuring a mode of the third equipment for sending a second target signal;

fourth configuration information, the said fourth configuration information is used for configuring the parameter of the first signal;

fifth configuration information, the fifth configuration information is used for configuring parameters of the second signal;

sixth configuration information for configuring at least one of: reporting mode of time delay information, reporting time frequency resource of time delay information, and carrying mode of time delay information.

25. The method of claim 24, wherein the manner in which the second device generates the first target signal comprises any one of: a regenerative transfer mode and a direct transfer mode.

26. The method of claim 24, wherein the second target signal comprises at least one of: a first signal, a second signal; the first signal is used for the first device to estimate second target delay information and/or the first signal is used for the second device to estimate first delay information; the second signal is used for the first device to estimate second target delay information;

the second target delay information is channel delay information between the first device and the third device, and the first delay information is channel delay information between the second device and the third device.

27. The method of claim 24, wherein the parameters of the signal include at least one of: the type of signal, the length of the signal, the time-frequency resources of the signal.

28. The method according to any one of claims 23 to 27, wherein the target configuration information is carried by any one of: radio resource control, RRC, medium access control unit, MAC-CE, downlink control information, DCI, side link control information, SCI, preamble sequence.

29. A delay information estimation device, which is characterized by comprising a receiving module and an estimation module;

the receiving module is used for receiving a first target signal sent by the second equipment according to the first target configuration information;

the estimation module is used for estimating first target time delay information according to the first target signal;

the receiving module is further configured to receive a second target signal sent by the third device according to the second target configuration information;

the estimation module is further configured to estimate second target delay information according to the second target signal;

the first target delay information includes at least one of:

first delay information and second delay information;

a sum of the first delay information and the second delay information;

30. A delay information estimation device, which is characterized by comprising a receiving module and a processing module;

The receiving module is used for receiving a first signal sent by the third device according to fourth configuration information, and the fourth configuration information is used for configuring parameters of the first signal;

the processing module is used for generating a first target signal according to the first configuration information, the second configuration information and the first signal, and sending the first target signal to the first equipment; the first configuration information is used for configuring the mode of generating the first target signal by the time delay information estimation device, and the second configuration information is used for configuring parameters of the first target signal;

31. A delay information estimation device, characterized in that the device comprises a sending module;

the sending module is used for sending a second target signal to the first equipment and sending a first signal to the second equipment according to the third configuration information, the fourth configuration information and the fifth configuration information;

32. A delay information estimation device, characterized in that the device comprises a configuration module;

the configuration module is configured to configure target configuration information, and the delay information estimation device includes any one of the following: the first device, the second device, the third device and the fourth device; the fourth device is: network node devices other than the first device, the second device, and the third device;

33. A communication device comprising a processor and a memory storing a program or instructions executable on the processor, the program or instructions implementing the steps of the delay information estimation method of any one of claims 1 to 12, or the steps of the delay information estimation method of any one of claims 13 to 16, or the steps of the delay information estimation method of any one of claims 17 to 22, or the steps of the delay information estimation method of any one of claims 23 to 28, when executed by the processor.

34. A readable storage medium, characterized in that the readable storage medium has stored thereon a program or instructions which, when executed by a processor, implements the steps of the delay information estimation method of any one of claims 1 to 12, or the steps of the delay information estimation method of any one of claims 13 to 16, or the steps of the delay information estimation method of any one of claims 17 to 22, or the steps of the delay information estimation method of any one of claims 23 to 28.