CN117640006A

CN117640006A - Frame structure determining method, device, communication equipment and storage medium

Info

Publication number: CN117640006A
Application number: CN202210957880.6A
Authority: CN
Inventors: 黄伟; 谭俊杰
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: WO2024032607A1

Abstract

The application discloses a frame structure determining method, a device, a communication device and a storage medium, which belong to the field of communication, and the frame structure determining method of the embodiment of the application comprises the following steps: the target equipment configures and sends target configuration information; the target configuration information is used for the first equipment to calculate a first parameter carried in a first signal, the first signal is a signal generated according to a second signal and a third signal, the third signal is a baseband signal for modulating the second signal, and the first parameter is a parameter of the third signal; the target equipment calculates a second parameter corresponding to each frame structure in P frame structures according to the channel delay information and the first parameter reported by the first equipment, wherein P is a positive integer; and the target equipment determines a target frame structure adopted by data transmission from the P frame structures according to the P second parameters.

Description

Frame structure determining method, device, communication equipment and storage medium

Technical Field

The application belongs to the technical field of communication, and particularly relates to a frame structure determining method, a frame structure determining device, communication equipment and a storage medium.

Background

In a backscatter communication (Backscatter Communication, BSC) system, when determining a frame structure for data transmission, a system end may estimate a delay of a channel first, then estimate transmission performance (specifically, signal-to-noise ratio and bit error rate) of a frame structure with a repetition structure length according to the delay, and determine an optimal frame structure from the frame structures with multiple repetition structure lengths after estimating transmission performance of the frame structures with multiple repetition structure lengths respectively.

However, according to the above method, since the system end needs to estimate the time delay of the channel first, and then estimate the transmission performance of the frame structures with different repetition structure lengths multiple times, the optimal frame structure can be determined, which results in excessive training overhead of the system.

Disclosure of Invention

The embodiment of the application provides a frame structure determining method, a frame structure determining device, communication equipment and a storage medium, which can solve the problem of overlarge training expenditure of a system.

In a first aspect, a frame structure determining method is provided, the method including: the target equipment configures and sends target configuration information; the target configuration information is used for the first equipment to calculate a first parameter carried in a first signal, the first signal is a signal generated according to a second signal and a third signal, the third signal is a baseband signal for modulating the second signal, and the first parameter is a parameter of the third signal; the target equipment calculates a second parameter corresponding to each frame structure in P frame structures according to the channel delay information and the first parameter reported by the first equipment, wherein P is a positive integer; and the target equipment determines a target frame structure adopted by data transmission from the P frame structures according to the P second parameters.

In a second aspect, a frame structure determining apparatus is provided, the apparatus including a configuration module, a calculation module, and a determination module; the configuration module is used for configuring and sending target configuration information; the target configuration information is used for the first equipment to calculate a first parameter carried in a first signal, the first signal is a signal generated according to a second signal and a third signal, the third signal is a baseband signal for modulating the second signal, and the first parameter is a parameter of the third signal; the computing module is used for computing a second parameter corresponding to each frame structure in the P frame structures according to the channel time delay information and the first parameter reported by the first equipment, wherein P is a positive integer; and the determining module is used for determining a target frame structure adopted by data transmission from the P frame structures according to the P second parameters calculated by the calculating module.

In a third aspect, a frame structure determining method is provided, the method including: the first device receives a first signal sent by the third device according to the first configuration information, and receives a second signal sent by the second device according to the second configuration information; the first device demodulates the first signal according to the first configuration information and the third configuration information to obtain data of a third signal; the first device calculates a first parameter of the third signal according to the data of the third signal; the first equipment acquires channel delay information and reports the channel delay information and the first parameter to the target equipment; the first configuration information is used for configuring signal parameters of the first signal, the second configuration information is used for configuring signal parameters of the second signal, and the third configuration information is used for configuring signal parameters of the third signal; the first signal, the second signal and the third signal are all for: and obtaining a first parameter or obtaining channel delay information.

In a fourth aspect, there is provided a frame structure determining apparatus, the apparatus including a receiving module, a demodulating module, a calculating module, and a processing module; the receiving module is used for receiving a first signal sent by the third equipment according to the first configuration information and receiving a second signal sent by the second equipment according to the second configuration information; the demodulation module is used for demodulating the first signal according to the first configuration information and the third configuration information to obtain data of the third signal; the calculation module is used for calculating a first parameter of the third signal according to the data of the third signal obtained by demodulation of the demodulation module; the processing module is used for acquiring the channel delay information and reporting the channel delay information and the first parameter to the target equipment; the first configuration information is used for configuring signal parameters of the first signal, the second configuration information is used for configuring signal parameters of the second signal, and the third configuration information is used for configuring signal parameters of the third signal; the first signal, the second signal and the third signal are all for: and obtaining a first parameter or obtaining channel delay information.

In a fifth aspect, there is provided a frame structure determining method, the method comprising: the second device sends a second signal according to second configuration information, wherein the second configuration information is used for configuring signal parameters of the second signal; wherein the second signal comprises: a first portion, a second portion, a third portion, and a fourth portion; the first portion and the second portion satisfy: the length is the first time unit, and the included data are identical; the third and fourth parts satisfy: the lengths are the second time units, and the included data parts are the same; the length of the first time unit is different from the length of the second time unit.

In a sixth aspect, there is provided a frame structure determining apparatus including a transmitting module; the sending module is used for sending a second signal according to second configuration information, and the second configuration information is used for configuring signal parameters of the second signal; wherein the second signal comprises: a first portion, a second portion, a third portion, and a fourth portion; the first portion and the second portion satisfy: the length is the first time unit, and the included data are identical; the third and fourth parts satisfy: the lengths are the second time units, and the included data parts are the same; the length of the first time unit is different from the length of the second time unit.

In a seventh aspect, there is provided a frame structure determining method, the method comprising: the third device receives a second signal sent by the second device according to the second configuration information; the third device modulates the second signal according to the first configuration information and the third configuration information through the generated third signal to obtain a first signal; the third device sends a first signal according to the first configuration information; the first configuration information is used for configuring signal parameters of the first signal, the second configuration information is used for configuring signal parameters of the second signal, and the third configuration information is used for configuring signal parameters of the third signal; the first signal, the second signal and the third signal are all for: and obtaining a first parameter of the third signal or obtaining channel delay information.

An eighth aspect provides a frame structure determining apparatus, the apparatus including a receiving module, a modulating module, and a transmitting module; the receiving module is used for receiving a second signal sent by the second equipment according to the second configuration information; the modulation module is used for modulating the second signal through the generated third signal according to the first configuration information and the third configuration information to obtain a first signal; the sending module is used for sending a first signal according to the first configuration information; the first configuration information is used for configuring signal parameters of the first signal, the second configuration information is used for configuring signal parameters of the second signal, and the third configuration information is used for configuring signal parameters of the third signal; the first signal, the second signal and the third signal are all for: and obtaining a first parameter of the third signal or obtaining channel delay information.

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 processor is configured to configure and send target configuration information; the target configuration information is used for the first equipment to calculate a first parameter carried in a first signal, the first signal is a signal generated according to a second signal and a third signal, the third signal is a baseband signal for modulating the second signal, and the first parameter is a parameter of the third signal; according to the channel delay information and the first parameters reported by the first equipment, calculating second parameters corresponding to each frame structure in P frame structures, wherein P is a positive integer; determining a target frame structure adopted by data transmission from the P frame structures according to the P second parameters; or,

The communication interface is used for receiving a first signal sent by the third equipment according to the first configuration information and receiving a second signal sent by the second equipment according to the second configuration information; the first device demodulates the first signal according to the first configuration information and the third configuration information to obtain data of a third signal; the processor is used for calculating a first parameter of the third signal according to the data of the third signal; channel delay information is acquired, and the channel delay information and the first parameter are reported to target equipment; the first configuration information is used for configuring signal parameters of the first signal, the second configuration information is used for configuring signal parameters of the second signal, and the third configuration information is used for configuring signal parameters of the third signal; the first signal, the second signal and the third signal are all for: obtaining a first parameter or obtaining channel delay information; or,

the communication interface is used for sending a second signal according to second configuration information, and the second configuration information is used for configuring signal parameters of the second signal; wherein the second signal comprises: a first portion, a second portion, a third portion, and a fourth portion; the first portion and the second portion satisfy: the length is the first time unit, and the included data are identical; the third and fourth parts satisfy: the lengths are the second time units, and the included data parts are the same; the length of the first time unit is different from the length of the second time unit; or,

The communication interface is used for receiving a second signal sent by the second equipment according to the second configuration information; the processor is used for modulating the second signal through the generated third signal according to the first configuration information and the third configuration information to obtain a first signal; the communication interface is also used for sending a first signal according to the first configuration information; the first configuration information is used for configuring signal parameters of the first signal, the second configuration information is used for configuring signal parameters of the second signal, and the third configuration information is used for configuring signal parameters of the third signal; the first signal, the second signal and the third signal are all for: and obtaining a first parameter of the third signal or obtaining channel delay information.

In an eleventh aspect, there is provided a communication system comprising: the target device according to the first aspect, the first device according to the third aspect, the second device according to the fifth aspect and the third device according to the seventh aspect, wherein the communication system is capable of implementing the steps of the frame structure determination method according to the first aspect and/or implementing the steps of the frame structure determination method according to the third aspect and/or implementing the steps of the frame structure determination method according to the fifth aspect and/or implementing the steps of the frame structure determination 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 the embodiment of the application, the target device may configure and send target configuration information; the target configuration information is used for the first equipment to calculate a first parameter carried in a first signal, the first signal is a signal generated according to a second signal and a third signal, the third signal is a baseband signal for modulating the second signal, and the first parameter is a parameter of the third signal; the target device can calculate a second parameter corresponding to each frame structure in the P frame structures according to the channel delay information and the first parameter reported by the first device, wherein P is a positive integer; and the target device can determine the target frame structure adopted by data transmission from the P frame structures according to the P second parameters. According to the scheme, the target equipment can configure and send the target configuration information for calculating the first parameter carried in the first signal by the first equipment, calculate the second parameter of any frame structure based on the channel delay information and the first parameter reported by the first equipment, and determine the optimal frame structure adopted by data transmission, so that the optimal frame structure can be determined without estimating the time delay of the channel first and estimating the transmission performance of the frame structures with different repetition structure lengths for multiple times, and the overhead of the system can be saved.

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 a schematic diagram of a time domain structure of a radio frequency carrier signal;

fig. 6 is a schematic diagram of a radio frequency carrier signal and a BSC baseband signal;

FIG. 7 is one of the flowcharts of a frame structure determination method provided in the embodiments of the present application;

FIG. 8 is a second flowchart of a frame structure determining method according to an embodiment of the present disclosure;

FIG. 9 is a third flowchart of a frame structure determining method according to an embodiment of the present disclosure;

fig. 10 is a schematic diagram of a frame structure determining method according to an embodiment of the present application;

FIG. 11 is a fourth flowchart of a frame structure determination method according to an embodiment of the present disclosure;

FIG. 12 is a schematic diagram of the RF carrier signal and the baseband signal during the data transmission stage;

FIG. 13 is a diagram of a second stage of data transmission between RF carrier signals and baseband signals;

FIG. 14 is a third diagram of the RF carrier signal and the baseband signal during the data transmission stage;

FIG. 15 is a diagram of a fourth embodiment of the RF carrier signal and the baseband signal during the data transmission stage;

Fig. 16 is one of schematic structural diagrams of a frame structure determining apparatus provided in an embodiment of the present application;

fig. 17 is one of schematic structural diagrams of a frame structure determining apparatus provided in an embodiment of the present application;

fig. 18 is one of schematic structural diagrams of a frame structure determining apparatus provided in an embodiment of the present application;

fig. 19 is one of schematic structural diagrams of a frame structure determining apparatus provided in an embodiment of the present application;

fig. 20 is a schematic diagram of a communication device provided in an embodiment of the present application;

fig. 21 is a schematic hardware structure diagram of a communication device provided in the embodiment of the present application when the communication device is a terminal;

fig. 22 is a schematic hardware structure of the communication device according to 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 the embodiments of the present application are not limited to long term evolution (Long Term Evolution, LTE)/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), positiveInterleaved frequency division multiple access (Orthogonal Frequency Division Multiple Access, OFDMA), single carrier frequency division multiple access (SC-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 frame structure determining method, the device, the communication equipment and the storage medium provided by the embodiment of the application are described in detail below through 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 back-scattered signal transmitted by the BSC transmitting apparatus (including ASK detection, PSK detection, FSK detection, 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,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.

Fig. 5 shows a schematic time domain structure of a radio frequency carrier signal, in order to effectively eliminate direct link interference, a radio frequency carrier signal s (t) sent by a radio frequency source device needs to satisfy the following time domain structure:

(1) As shown in fig. 5 (a), s (T) includes two time slot blocks with identical polarity and data, which form a basic time slot block (here, only time slots are taken as a time unit for example, not limited to time slots), the data length in each time slot is N, and the period length is T _s And is random or non-random, where s (t) can be expressed as the following formula (2):

(2) Alternatively, as shown in fig. 5 (b), every 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):

taking the rf carrier signal having the time domain structure shown in (a) of fig. 5 as an example, in order to ensure the performance of eliminating interference, the carrier signal length N of the rf carrier signal must satisfy: n+d > L;

wherein,for direct link h ₃ And backscatter cascade channel h _b ＝{h ₁ ，h ₂ Minimum channel transmission delay, }>For direct link h ₃ And backscatter cascade channel h _b ＝{h ₁ ，h ₂ Maximum delay spread of }.

For BSC transmitting equipment, the symbol period T of BSC modulating signal is regulated _b Period T of carrier frequency signal _s And satisfies: t (T) _b ＝2T _s ；

In addition, the BSC transmitting apparatus adopts Miller coding (actually, may be any BSC coding), fig. 6 shows a schematic diagram of a radio frequency carrier signal and a BSC baseband signal, and if a transmission bit b=0 is shown in fig. 6, the baseband signal B (n) is: b [ N ] =1, n=0, …,2N-1; if the transmission bit b=1, the baseband signal B (n) is:

for BSC receiving device, the direct link interference signal y will be received _d [n]And a backscatter signal y _b [n]Namely, the reception signal of the BSC receiving device is: y [ n ]]＝y _b [n]+y _d [n]+w[n]The method comprises the steps of carrying out a first treatment on the surface of the Wherein, the direct link signal is:

since the distance from the BSC transmitting device to the BSC receiving device is usually relatively short, without loss of generality, assume channel h ₂ (t) is a single-path channel, denoted as h ₂ Then the backscatter signal is now:

due to the repetitive structural nature of the radio frequency carrier signal s (n), the direct link interference signal y _d [n]The method meets the following conditions:

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

If the transmission bit b=1, y _b [n]＝-y _b [n+N]，n＝L _h1 -1，…，N+D _h1 -1。

Then utilize y _d [n]And y _b [n]Is a repeating structure of (a)Characteristically, the following differential signal is constructed:

if the transmission bit b=0, z [ N ] =y [ N ] -y [ n+n ] =v [ N ], n=l-1, …, n+d-1,

if the transmission bit b=1, z [ N ] =y [ N ] -y [ n+n ] =u [ N ] +v [ N ], n=l-1, …, n+d-1;

wherein y [ n ]]＝y _b [n]+y _d [n]+w[n]For the BSC to receive the received signal of the device,v[n]＝w[n]-w[n+N]. The effective signal-to-noise ratio of the backscattered signal is thus:where γ is a value related to the radio frequency carrier repetition length N, the minimum channel delay D and the maximum delay spread L.

However, in the above-mentioned direct link interference cancellation scheme, since the differential signal v [ N ] =w [ N ] -w [ n+n ] is constructed by the difference between two gaussian signals, the average power of noise increases, and noise rises, so that the effective signal-to-noise ratio decreases. In order to improve the effective signal-to-noise ratio, one way is to increase N to M (M > N), and the other way is to repeatedly transmit T (T > 1) basic slot blocks with length N, thereby playing a noise smoothing effect.

The existing direct link interference elimination scheme utilizes the repeated structure of radio frequency signals and BSC baseband signal design to realize BSC modulation signal demodulation under strong direct link interference. The principle is that the repeated structure of the radio frequency signal with the repeated structure is still maintained after the radio frequency signal passes through the channel, so that the direct link interference can be eliminated by subtracting the two maintained effective repeated structure signals; and for useful backscatter signal items, the differential modulation signal demodulation of the BSC without direct link interference can be realized after the subtraction of the signals which are subjected to differential modulation by the BSC equipment and have the same held two effective repeated structures. However, since the scheme only interferes in the amplitude dimension, demodulation performance of the scheme is strongly related to the difference between the repetition structure length and the channel delay, the repetition number of the repetition structure, and other factors. In addition, since the scheme uses Miller for coding, the frequency band utilization rate is only 1/2 compared with OOK modulation, so that the frequency band utilization rate is lower, and if the effective signal-to-noise ratio of the backscattering is improved by increasing the length of the repeated structure or the repeated times of the repeated structure, the frequency band utilization rate of the system is further reduced. In addition, when determining the length of the repeated structure or the number of times of the repeated structure, the traditional scheme needs to estimate the time delay of the channel first, and then transmit the training frame to estimate the effective signal to noise ratio, so that the training time delay is longer and the training cost is larger.

In order to solve the above-mentioned problem, in the frame structure determining method provided in the embodiment of the present application, the target device may configure and send target configuration information; the target configuration information is used for the first equipment to calculate a first parameter carried in a first signal, the first signal is a signal generated according to a second signal and a third signal, the third signal is a baseband signal for modulating the second signal, and the first parameter is a parameter of the third signal; the target device can calculate a second parameter corresponding to each frame structure in the P frame structures according to the channel delay information and the first parameter reported by the first device, wherein P is a positive integer; and the target device can determine the target frame structure adopted by data transmission from the P frame structures according to the P second parameters. According to the scheme, the target equipment can configure and send the target configuration information for calculating the first parameter carried in the first signal by the first equipment, calculate the second parameter of any frame structure based on the channel delay information and the first parameter reported by the first equipment, and determine the optimal frame structure adopted by data transmission, so that the optimal frame structure can be determined without estimating the time delay of the channel first and estimating the transmission performance of the frame structures with different repetition structure lengths for multiple times, and the overhead of the system can be saved.

The effect on the effective signal-to-noise ratio by increasing the length of the repeating structure or increasing the number of repeating structures is described in detail below.

When the length of the repeating structure is N and the number of repetitions is 1, the following differential signal is constructed:

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

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

Wherein y is ₀ [n]＝y _b0 [n]+y _d0 [n]+w ₀ [n]Receiving a signal for the BSC receiving device;

and is also provided withv ₀ [n]＝w ₀ [n]-w ₀ [n+N]。

Then the effective signal-to-noise ratio of the backscattered signal is:the statistical decision function constructed is: />J ₀ ＝N+D-L，k∈Z ⁺ 。

According to the deduction, the optimal judgment threshold performance is as follows:the bit error rate performance is:where ω is the false detection probability.

Without loss of generality, for simplicity of expression, bit error rate performance can be expressed as a function of the repetition structure length N, the minimum channel delay D, and the maximum delay spread: p (P) _0，e，min ＝f(γ ₀ N, D, L), wherein when k=2, the optimal decision threshold and bit error rate performance are respectively:

from the above, it can be seen that (1) when the length of the repeating structure is increased, if the length of the repeating structure is M and the number of repetitions is 1, the following differential signal can be constructed:

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

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

Then the effective signal-to-noise ratio of the backscattered signal is:

the statistical decision function constructed is:J ₁ ＝M+D-L+1；

according to the push, the optimal decision threshold and the bit error rate performance are as follows: p (P) _1，e，min ＝f(γ ₁ ，M，D，L)；

When k=2, the optimal decision threshold and the bit error rate performance are respectively:

(2) In the case of increasing the number of repeated structures, if each repeated structure has a length of N, but repeatedly transmits P identical basic slot blocks, the following differential signals can be constructed:

if the transmission bit b=0, z ₂ [n]＝y ₂ [n]-y ₂ [n+N]＝v ₂ [n]，n＝L-1，…，N+D-1；

If the transmission bit b=1, z ₂ [n]＝y ₂ [n]-y ₂ [n+N]＝u ₂ [n]+v ₂ [n]，n＝L-1，…，N+D-1；

Then the effective signal-to-noise ratio of the P backscatter signals is:

the statistical decision function constructed is:J ₂ ＝N+D-L+1；

according to the push, the optimal decision threshold and the bit error rate performance are as follows: p (P) _1，e，min ＝f(γ ₂ ，M，D，L)；

therefore, the signal to noise ratio performance can be effectively improved by increasing the length of the repeated structure and the number of times of the repeated structure, but gains brought by the two modes in different channel environments are different.

Since the ratio of the bit error rate performance under the same repetition number and different repetition structure lengths is a function related to the repetition structure length ratio M/N, the minimum channel delay D and the maximum delay spread L, the signal to noise ratio and bit error rate performance under any repetition structure length E can be obtained by solving the minimum channel delay D and the maximum delay spread L and deriving the signal to noise ratio and bit error rate performance under any repetition structure length E for a time-invariant channel, i.e., a channel with the minimum channel delay and the maximum delay spread of the channel over a period of time, if the signal to noise ratio and bit error rate under two repetition structures of different lengths are known. Also, the bit error rate performance at different repetition rates with the same repetition rate length is a function related to the repetition rate ratio P, the minimum channel delay D, and the maximum delay spread L. Therefore, for time-invariant channels, if the signal-to-noise ratio and the error rate under two repeated structures with different lengths are known, the minimum channel time delay D and the maximum time delay expansion L can be obtained by solving, and the signal-to-noise ratio and the error rate performance under the number F of any repeated structure can be deduced.

According to the above properties, the system end only needs to know the signal-to-noise ratio and the bit error rate performance under two different repetition structure lengths, so that the signal-to-noise ratio and the bit error rate performance under any repetition structure length and/or repetition structure times can be obtained through deduction, channel delay estimation and signal-to-noise ratio estimation are realized in one step, a step training process that the delay is estimated firstly and then the signal-to-noise ratio is estimated in the traditional mode is reduced, and the system training overhead and the training delay are reduced. Meanwhile, based on the deduced signal-to-noise ratio and bit error rate performance under any repeated structure length and/or repeated structure times, the system end can flexibly configure the radio frequency carrier signal period and the backscattering communication modulation signal rate according to the channel environment in the data transmission stage, so that the transmission rate of the backscattering communication is improved as much as possible while the bit error rate performance of the backscattering communication is met.

An embodiment of the present application provides a method for determining a frame structure, and fig. 7 shows a flowchart of the method for determining a frame structure provided in the embodiment of the present application. As shown in fig. 7, the frame structure determining method provided in the embodiment of the present application may include the following steps 701 to 703.

Step 701, configuring and transmitting target configuration information by target equipment.

In this embodiment of the present application, the target configuration information is used for calculating, by the first device, a first parameter carried in a first signal, where the first signal is a signal generated according to a second signal and a third signal, and the third signal is a baseband signal that modulates the second signal, and the first parameter is a parameter of the third signal.

Optionally, in an embodiment of the present application, the target device may include any one of the following: a first device, a second device, a third device, and a fourth device.

In this embodiment of the present application, the first device is a BSC receiving device, the second device is a radio frequency source device, the third device is a BSC sending device, and 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 target device may include the first device, the second device, the third device, or the fourth device, the target configuration information may be configured by any device, so that flexibility in configuring the target configuration information may be improved.

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

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

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

the third configuration information is used for configuring signal parameters of the third signal;

fourth configuration information for configuring at least one of: reporting mode of channel time delay information, reporting time-frequency resource of channel time delay information, bearing mode of channel time delay information, reporting mode of first parameter, reporting time-frequency resource of first parameter and bearing mode of first parameter.

In the embodiment of the present application, since the target configuration information may be at least one of the first configuration information, the second configuration information, the third configuration information and the fourth configuration information, the target device may configure different configuration information to configure corresponding content, so that flexibility of configuring the target configuration information may be further improved.

Optionally, in an embodiment of the present application, the signal parameter of the first signal may include at least one of: the reflection coefficient of the first signal, the type of the first signal, the length of the first signal, and the time-frequency resource of the first signal.

Optionally, in an embodiment of the present application, the signal parameter of the second signal may include at least one of: the type of the second signal, the length of the second signal, and the time-frequency resource of the second signal.

Optionally, in an embodiment of the present application, the signal parameter of the third signal may include at least one of: the type of the third signal, the length of the third signal, and the time-frequency resource of the third signal.

Alternatively, in the embodiment of the present application, the first signal may be a BSC reflected signal generated according to the second signal and the third signal.

In the embodiment of the present application, since the parameters of the first signal, the parameters of the second signal, and the parameters of the third signal may all include at least one of a type, a length, a time-frequency resource, and the like of the corresponding signal, the configuration function of the target configuration information may be enriched.

Optionally, in the embodiment of the present application, the channel delay information may be used to indicate a first target delay and a second target delay.

In this embodiment of the present application, the first target delay is: the sum of the first channel transmission delay and the second channel transmission delay is the smallest channel transmission delay in the third channel transmission delay; the second target delay is: the sum of the first channel delay spread and the second channel delay spread is the largest channel delay spread among the third channel delay spreads.

In this embodiment of the present application, the first channel transmission delay and the first channel delay spread are: channel delay between the second device and the third device; the second channel transmission delay and the second channel delay spread are: channel delay between the first device and the third device; the third channel transmission delay and the third channel delay spread are: channel latency between the first device and the second device.

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.

In this embodiment of the present application, the first signal is a signal generated according to the second signal and the third signal, so that the first signal may carry the first parameter of the third signal.

Optionally, in an embodiment of the present application, the second signal may include: a first portion, a second portion, a third portion, and a fourth portion.

In this embodiment of the present application, the first portion and the second portion satisfy: the length is the first time unit, and the included data are identical; the third and fourth parts satisfy: the length is the second time unit and the included data portions are the same.

In this embodiment, the length of the first time unit is different from the length of the second time unit.

In this embodiment of the present application, the first time unit and the second time unit may be any one of the following: symbols, slots, subframes, frames.

In this embodiment of the present application, since the second signal includes: the length is the first time unit, the first part and the second part which are completely the same as the included data, and the length is the second time unit, and the third part and the fourth part which are the same as the included data, so that signal modulation can be performed based on the characteristics of the second signal to calculate the first parameter.

Step 702, the target device calculates a second parameter corresponding to each frame structure in the P frame structures according to the channel delay information and the first parameter reported by the first device.

Wherein P is a positive integer.

Alternatively, in the embodiment of the present application, the value of P may be preconfigured or predefined.

Optionally, in the embodiment of the present application, each two frame structures in the P frame structures satisfy: the repeat structure length is different and/or the number of repetitions is different.

In this embodiment of the present application, since the repeating structures of the P frame structures are different in length and/or in number of repetitions, the diversity of the calculated frame structures may be enriched, so as to facilitate accurate selection of the optimal frame structure therefrom.

Optionally, in an embodiment of the present application, the first parameter may include any one of the following: bit error rate, bit error rate and signal to noise ratio; the second parameter may comprise any one of the following: bit error rate, bit error rate and signal to noise ratio.

In step 703, the target device determines, according to the P second parameters, a target frame structure adopted for data transmission from the P frame structures.

It will be appreciated that the target frame structure is the optimal frame structure for data transmission.

For the specific method of calculating the second parameter corresponding to each frame structure and determining the target frame structure, reference may be made to the specific description in the related art, and in order to avoid repetition, details are not repeated here.

In the frame structure determining method provided by the embodiment of the application, because the target device can configure and send the target configuration information for the first device to calculate the first parameter carried in the first signal, and can calculate the second parameter of any frame structure based on the channel delay information and the first parameter reported by the first device, and determine the optimal frame structure adopted by data transmission from the second parameter, the optimal frame structure can be determined without estimating the time delay of the channel first and estimating the transmission performance of the frame structures with different repeated structure lengths for multiple times, and the overhead of the system can be saved.

An embodiment of the present application provides a method for determining a frame structure, and fig. 8 shows a flowchart of the method for determining a frame structure provided in the embodiment of the present application. As shown in fig. 8, the frame structure determining method provided in the embodiment of the present application may include steps 801 to 804 described below.

Step 801, the first device receives a first signal sent by the third device according to the first configuration information, and receives a second signal sent by the second device according to the second configuration information.

In this embodiment of the present application, the first configuration information is used for configuring signal parameters of the first signal, and the second configuration information is used for configuring signal parameters of the second signal.

Step 802, the first device demodulates the first signal according to the first configuration information and the third configuration information to obtain data of the third signal.

In this embodiment of the present application, the third configuration information is used to configure a signal parameter of the third signal.

In this embodiment of the present application, the first signal, the second signal, and the third signal are all used for: obtaining a first parameter or obtaining the channel delay information.

Optionally, in an embodiment of the present application, the third signal may be: the third device subjects the second signal to a baseband signal for use in target modulation.

In the embodiment of the application, the target modulation is any one of the following: amplitude differential modulation, phase differential modulation, amplitude and phase differential modulation.

In this embodiment of the present application, since the third signal may be: the third device performs amplitude differential modulation, phase differential modulation, or baseband signal used when amplitude and phase differential modulation on the second signal, so that different third signals can be used to perform different modulations on the second signal, thereby enriching the functions of the third signals.

Optionally, in the embodiment of the present application, the target modulation is the amplitude differential modulation, and the modulation order is second order; then:

the third signal carries bit information through the amplitude difference value of the first half symbol period and the second half symbol period of the first symbol period, and the length of the first symbol period is twice of that of the first time unit; and if the bit information indicates the first value, the amplitude value of the third signal is the first amplitude value; if the bit information indicates the second value, the amplitude value of the first half symbol period of the third signal is the second amplitude value, the amplitude value of the second half symbol period of the third signal is the third amplitude value, and the second amplitude value and the third amplitude value are different from each other;

The third signal carries bit information through the amplitude difference value of the first half symbol period of the second symbol period and the second half symbol period of the second symbol period, and the length of the second symbol period is twice of that of the second time unit; and if the bit information indicates the first value, the amplitude value of the third signal is a fourth amplitude value; if the bit information indicates the second value, the amplitude value of the first half symbol period of the third signal is a fifth amplitude value, the amplitude value of the second half symbol period of the third signal is a sixth amplitude value, and the fifth amplitude value and the sixth amplitude value are different from each other.

Optionally, in the embodiment of the present application, the first time unit and the second time unit may be any one of the following: symbols, slots, subframes, frames.

Optionally, in the embodiment of the present application, the first value is bit 0, and the second value is bit 1; alternatively, the first value is bit 1 and the second value is bit 0.

Optionally, in the embodiment of the present application, the target modulation is the phase differential modulation, and the modulation order is second order; then:

the third signal carries bit information through the phase difference value between the first half symbol period of the first symbol period and the second half symbol period of the first symbol period, and the length of the first symbol period is twice of that of the first time unit; and if the bit information indicates the first value, the phase value of the third signal is the first phase value; if the bit information indicates the second value, the phase value of the first half symbol period of the third signal is the second phase value, the phase value of the second half symbol period of the third signal is the third phase value, and the second phase value and the third phase value are different from each other;

The third signal carries bit information through the phase difference value between the first half symbol period of the second symbol period and the second half symbol period of the second symbol period, and the length of the second symbol period is twice of that of the second time unit; and if the bit information indicates the first value, the phase value of the third signal is a fourth phase value; if the bit information indicates the second value, the phase value of the first half symbol period of the third signal is a fifth phase value, the phase value of the second half symbol period of the third signal is a sixth phase value, and the fifth phase value and the sixth phase value are different from each other.

Optionally, in the embodiment of the present application, the target modulation is the above-mentioned amplitude and phase differential modulation, and the modulation order is second order; then:

the third signal carries bit information through the amplitude and phase difference scores of the first half of the first symbol period and the second half of the first symbol period, and the length of the first symbol period is twice as long as the first time unit; if the bit information indicates the first value, the amplitude value of the third signal is the first amplitude value, and the phase value of the third signal is the first phase value; if the bit information indicates the second value, the amplitude value of the first half symbol period of the third signal is the second amplitude value, the phase value of the first half symbol period of the third signal is the second phase value, the amplitude value of the second half symbol period of the third signal is the third amplitude value, the phase value of the second half symbol period of the third signal is the third phase value, the second amplitude value and the third amplitude value are different, and the second phase value and the third phase value are different;

The third signal carries bit information through the amplitude and phase difference scores of the first half of the second symbol period and the second half of the second symbol period, and the length of the second symbol period is twice of that of the second time unit; if the bit information indicates the first value, the amplitude value of the third signal is a fourth amplitude value, and the phase value of the third signal is a fourth phase value; if the bit information indicates the second value, the amplitude value of the first half symbol period of the third signal is a fifth amplitude value, the phase value of the first half symbol period of the third signal is a fifth phase value, the amplitude value of the second half symbol period of the third signal is a sixth amplitude value, the phase value of the second half symbol period of the third signal is a sixth phase value, the fifth amplitude value and the sixth amplitude value are different from each other, and the fifth phase value and the sixth phase value are different from each other.

In the embodiment of the present application, when the target modulation is different, the third signal may have different characteristics, so that different target modulations on the second signal may be satisfied, and thus the frame structure composition of the third signal may be enriched.

Alternatively, in the embodiment of the present application, the above step 802 may be specifically implemented by the following step 802 a.

Step 802a, the first device demodulates the first signal according to the first configuration information and the third configuration information and according to a preset criterion, to obtain data of the third signal.

In an embodiment of the present application, the preset criteria includes at least one of the following: based on the criteria of the differential signal structure, a maximum likelihood detection criterion, a minimum Euclidean distance criterion.

A specific method for demodulating the first signal by the first device is exemplarily described below.

Illustratively, taking the example that the first device demodulates the first signal with the repetition length of N according to the criterion based on the differential signal structure, the first device may post the received signal based on the differential signal structurePeriodic signal minus the former->Periodic signal to obtain differential signal z [ n ]]＝y[n]-y[n+N]N=l-1, …, n+d-1 according to +.>As can be seen from the time relation and the differential nature of the cross-link interference or direct-link interference signal (i.e. the second signal) is subtracted out and the differential signal resulting in the backscattered signal (i.e. the third signal) is as follows:

where n=l-1, …, n+d-1. From the above, the direct link interference signal term is effectively eliminated due to the repeated structure of the source signal and the differential structure of the BSC baseband signal.

In the embodiment of the present application, the first device may demodulate the first signal according to at least one of a criterion based on a differential signal structure, a maximum likelihood detection criterion and a minimum euclidean distance criterion, so as to obtain data of the third signal, so that the flexibility of the first device in demodulating the first signal may be improved.

Step 803, the first device calculates a first parameter of the third signal according to the data of the third signal.

Step 804, the first device acquires the channel delay information, and reports the channel delay information and the first parameter to the target device.

Alternatively, in the embodiment of the present application, the above step 804 may be specifically implemented by the following steps 804a or 804 b.

In step 804a, the first device obtains channel delay information based on the first parameter, and reports the channel delay information and the first parameter to the target device.

Optionally, in the embodiment of the present application, after calculating the first parameter, the first device may calculate the channel delay information through an equation corresponding to the first parameter.

Step 804b, the first device obtains channel delay information based on the first signal and the second signal, and reports the channel delay information and the first parameter to the target device.

Optionally, in the embodiment of the present application, the first device may acquire the channel delay information according to timestamp information carried in the first signal and the second signal, where the timestamp information is used to indicate a time of sending or receiving a corresponding signal.

In the embodiment of the present application, since the first device may acquire the channel delay information based on the first parameter, or based on the first signal and the second signal, the flexibility of the first device in acquiring the channel delay information may be improved.

Alternatively, in the embodiment of the present application, the above step 804 may be specifically implemented by the following step 804 c.

Step 804c, the first device acquires the channel delay information, and according to the fourth configuration information, reports the channel delay information to the target device in a first reporting manner, and reports the first parameter to the target device in a second reporting manner.

In this embodiment of the present application, the first reporting manner is different from the second reporting manner.

In this embodiment of the present application, the fourth configuration information is used to configure at least one of the following: the reporting mode of the channel time delay information, the reporting time-frequency resource of the channel time delay information, the bearing mode of the channel time delay information, the reporting mode of the first parameter, the reporting time-frequency resource of the first parameter and the bearing mode of the first parameter.

In the embodiment of the present application, since the first device may report the channel delay information and the first parameter respectively in different reporting manners according to the fourth configuration information, the flexibility of reporting data by the first device may be improved.

Optionally, in an embodiment of the present application, the channel delay information may be used to indicate at least one of the following: the first transmission delay, the first delay spread, the second transmission delay, the second delay spread, the third transmission delay, the third delay spread.

In the embodiment of the present application, the first transmission delay is a channel transmission delay between the second device and the third device, and the first delay is a channel delay extension between the second device and the third device; the second transmission delay is the channel transmission delay between the first device and the third device, and the second delay spread is the channel delay spread between the first device and the third device; the third transmission delay is a channel transmission delay between the first device and the second device, and the third delay spread is a channel delay spread between the first device and the second device.

Optionally, in an embodiment of the present application, the first reporting manner includes any one of the following:

(1.1) reporting the first transmission delay, the first delay spread, the second transmission delay, the second delay spread, the third transmission delay and the third delay spread respectively;

(1.2) reporting the sum of the first transmission delay and the second transmission delay, the sum of the first delay spread and the second delay spread, the third transmission delay and the third delay spread respectively;

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

In this embodiment of the present application, since the first reporting manner may include any one of the foregoing (1.1) to (1.3), flexibility of reporting the foregoing channel delay information by the first device may be improved.

Optionally, in an embodiment of the present application, the first parameter includes any one of the following: bit error rate, bit error rate and signal to noise ratio; then, the second reporting mode may include any one of the following:

(2.1) reporting only the first parameter of the first target signal;

(2.2) reporting only the first parameter of the second target signal;

(2.3) simultaneously reporting the first parameter of the first target signal and the first parameter of the second target signal;

wherein the first target signal is: a third signal having a length of the first symbol period; the second target signal is: and a third signal having a length of the second symbol period.

In this embodiment of the present application, since the first reporting manner may include any one of the foregoing (2.1) to (2.3), flexibility of reporting the first parameter by the first device may be improved.

In practical implementation, the first device may report only the first parameters of the signal, and the target device calculates the channel delay information, so that after the target device calculates the channel delay information and receives the first parameters reported by the first device, the second parameters corresponding to each frame structure in the P frame structures may be calculated, and according to the P second parameters, the target frame structure adopted by the data transmission is determined from the P frame structures.

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

In the frame structure determining method provided by the embodiment of the application, since the first device can demodulate the received first signal according to the configuration information to obtain the data of the third signal, and can calculate the first parameter of the third signal according to the data of the third signal, and can report the acquired channel delay information and the calculated first parameter to the target device, the target device does not need to estimate the channel delay information any more, and the target device can determine the target frame structure directly through the channel delay information and the first parameter, thereby saving the overhead of the system.

An embodiment of the present application provides a method for determining a frame structure, and fig. 9 shows a flowchart of the method for determining a frame structure provided in the embodiment of the present application. As shown in fig. 9, the method for determining a frame structure provided in the embodiment of the present application may include the following step 901.

Step 901, the second device sends a second signal according to the second configuration information.

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

In this embodiment of the present application, the second signal includes: a first portion, a second portion, a third portion, and a fourth portion.

Optionally, in the embodiment of the present application, the data in the target time unit may be: generating a non-random sequence or a random sequence according to a preset rule; the target time unit is a first time unit or a second time unit.

Alternatively, in the embodiment of the present application, the second signal may be: a signal of a radio frequency carrier is provided to the third device.

The frame structure determining method provided in the embodiment of the present application is exemplarily described below with reference to the accompanying drawings.

The second signal may satisfy the time domain structure as shown in fig. 10, and it can be seen that the second signal s (N) includes two training frames, the training frame 1 includes two time slots with the same polarity and data, the data length in each time slot is N, and the period length isAnd is random; also included in training frame 2 are two time slots (i.e. a first time unit and a second time unit) of the same polarity and data,the data length of each time slot is M, the period length is +.>And is random. The second signal s (n) may satisfy the following:

In the frame structure determining method provided in the embodiment of the present application, since the second device may send the second signal according to the second configuration information, and the first portion and the second portion in the second signal satisfy: the length is the first time unit, and the included data are identical; the third and fourth parts of the second signal satisfy: the lengths are the second time units, and the included data parts are the same; and the length of the first time unit is different from that of the second time unit, so that after the first device receives the second signal, the first device can acquire the channel delay information and the first parameter based on the second signal, so that the target device can further determine the target frame structure, and the overhead of the system can be saved.

An embodiment of the present application provides a frame structure determining method, and fig. 11 shows a flowchart of the frame structure determining method provided in the embodiment of the present application. As shown in fig. 11, the frame structure determining method provided in the embodiment of the present application may include steps 1101 to 1103 described below.

Step 1101, the third device receives a second signal sent by the second device according to the second configuration information.

In this embodiment of the present application, the first portion and the second portion satisfy: the length is the first time unit, and the included data are identical; the third part and the fourth part satisfy: the length is the second time unit and the included data portions are the same.

In this embodiment of the present application, the first time unit and the second time unit are any one of the following: symbols, slots, subframes, frames.

In step 1102, the third device modulates the second signal according to the first configuration information and the third configuration information by using the generated third signal, so as to obtain the first signal.

In this embodiment of the present application, the first configuration information is used for configuring signal parameters of the first signal, and the third configuration information is used for configuring signal parameters of the third signal.

In this embodiment of the present application, the first signal, the second signal, and the third signal are all used for: and obtaining a first parameter of the third signal or obtaining channel delay information.

In step 1103, the third device sends a first signal according to the first configuration information.

In the frame structure determining method provided in the embodiment of the present application, since the third device may modulate the received second signal according to the configuration information by using the generated third signal to obtain the first signal, and send the first signal, after the first device receives the first signal, the first device may obtain the channel delay information and the first parameter based on the first signal, so as to further enable the target device to determine the target frame structure, thereby saving overhead of the system.

The target device may determine, according to the P second parameters, a target frame structure used for data transmission from the P frame structures after calculating the second parameters corresponding to each frame structure in the P frame structures according to the channel delay information and the first parameters reported by the first device; fig. 12 to 16 show schematic diagrams of the rf carrier signal and the baseband signal during the data transmission stage.

Considering that the repetition structure length is E, and the frame structure with the repetition number of 1 meets the bit error rate performance under the condition, the radio frequency carrier signal and the baseband signal as shown in fig. 12 can be adopted, the frame structure design can improve the frequency band utilization rate and reduce the communication time delay, and the frame structure design is suitable for the communication scene with larger channel time delay or channel time delay expansion because of larger one-time repetition structure length; however, this design has the disadvantage that if the radio frequency carrier signal sent by the radio frequency source is itself used for communication to other communication node devices, this may affect the bandwidth utilization and communication delay of the existing communication system;

Considering that the repetition structure length is E, and the frame structure with the repetition number of 1 meets the bit error rate performance under the condition, the radio frequency carrier signal and the baseband signal as shown in fig. 13 can be adopted, and the bit error rate performance is the same as the repetition structure length of the frame structure, so that the frame structure is also suitable for the scene with larger communication delay. And a frame structure for other communication functions is arranged between two repeated structures of the radio frequency carrier signals in the frame structure, so that the frequency band utilization and the communication time delay of the original communication system can be reduced; but the defects are that the frequency band utilization rate of the BSC system is reduced and the communication time delay of the BSC system is improved;

considering that the frame structure with the repetition structure length of N and the repetition number of P meets the bit error rate performance under the condition, the radio frequency carrier signal and the baseband signal as shown in fig. 14 can be adopted, and the frame structure design has the advantages that the period of the radio frequency carrier signal and the baseband signal is shorter, the requirement on synchronization is very high, and the frame structure design can be suitable for the scenes with smaller channel delay or the scenes with smaller signal to noise ratio;

considering the bit error rate performance under the condition that the frame structure with the repetition structure length of N and the repetition number of P meets the condition, the radio frequency carrier signal and the baseband signal as shown in fig. 15 can be adopted, and the bit error rate performance is the same as the frame structure with the same repetition structure length, so that the frame structure is also suitable for the scene with smaller communication time delay. And a frame structure for other communication functions is arranged between two repeated structures of the radio frequency carrier signals in the frame structure, so that the frequency band utilization and the communication time delay of the original communication system can be reduced; but have the disadvantages of reducing the frequency band utilization of the backscatter communication system and increasing the communication delay of the backscatter communication system.

According to the frame structure determining method provided by the embodiment of the application, the execution body can be the frame structure determining device. In the embodiment of the present application, taking an example in which the frame structure determining device performs the frame structure determining method, the frame structure determining device provided in the embodiment of the present application is described.

In connection with fig. 16, an embodiment of the present application provides a frame structure determining apparatus 160, where the frame structure determining apparatus 160 may include a configuration module 161, a calculation module 162, and a determining module 163. A configuration module 161, configured to configure and send target configuration information; the target configuration information is used for the first equipment to calculate a first parameter carried in a first signal, the first signal is a signal generated according to a second signal and a third signal, the third signal is a baseband signal for modulating the second signal, and the first parameter is a parameter of the third signal. The calculating module 162 may be configured to calculate, according to the channel delay information and the first parameter reported by the first device, a second parameter corresponding to each frame structure in the P frame structures, where P is a positive integer. The determining module 163 may be configured to determine, from the P frame structures, a target frame structure used for data transmission according to the P second parameters calculated by the calculating module 162.

In one possible implementation, the target device may include any of the following: the first device, the second device, the third device and the fourth device; the first device is BSC receiving device, the second device is radio frequency source device, the third device is BSC transmitting device, and 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 second signal may include: a first portion, a second portion, a third portion, and a fourth portion. Wherein the first portion and the second portion satisfy: the length is the first time unit, and the included data are identical; the third and fourth parts satisfy: the lengths are the second time units, and the included data parts are the same; the length of the first time unit is different from the length of the second time unit; the first time unit and the second time unit are any one of the following: symbols, slots, subframes, frames.

In one possible implementation manner, the channel delay information may be used to indicate a first target delay and a second target delay; the first target delay is: the sum of the first channel transmission delay and the second channel transmission delay is the smallest channel transmission delay in the third channel transmission delay; the second target delay is: the sum of the first channel delay spread and the second channel delay spread is the largest channel delay spread among the third channel delay spreads. Wherein the first channel transmission delay and the first channel delay spread are: channel delay between the second device and the third device; the second channel transmission delay and the second channel delay spread are: channel delay between the first device and the third device; the third channel transmission delay and the third channel delay spread are: channel latency between the first device and the second device.

In one possible implementation manner, each two frame structures in the P frame structures may satisfy: the repeat structure length is different and/or the number of repetitions is different.

In one possible implementation, the first parameter may include any one of: bit error rate, bit error rate and signal to noise ratio; the second parameter may comprise any one of the following: bit error rate, bit error rate and signal to noise ratio.

In a possible implementation, the target configuration information may include at least one of: the first configuration information is used for configuring signal parameters of the first signal; the second configuration information is used for configuring signal parameters of the second signal; the third configuration information is used for configuring signal parameters of the third signal; fourth configuration information for configuring at least one of: the reporting mode of the channel time delay information, the reporting time-frequency resource of the channel time delay information, the bearing mode of the channel time delay information, the reporting mode of the first parameter, the reporting time-frequency resource of the first parameter and the bearing mode of the first parameter.

In a possible implementation manner, the signal parameters of the first signal may include at least one of the following: the reflection coefficient of the first signal, the type of the first signal, the length of the first signal and the time-frequency resource of the first signal; and/or the signal parameters of the second signal may comprise at least one of: the type of the second signal, the length of the second signal, and the time-frequency resource of the second signal; and/or, the signal parameters of the third signal may comprise at least one of: the type of the third signal, the length of the third signal, and the time-frequency resource of the third 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 frame structure determining device provided by the embodiment of the application, the frame structure determining device can be configured and used for the first equipment to calculate the target configuration information of the first parameter carried in the first signal, calculate the second parameter of any frame structure based on the channel delay information and the first parameter reported by the first equipment, and determine the optimal frame structure adopted by data transmission from the second parameter, so that the optimal frame structure can be determined without estimating the time delay of the channel first and then estimating the transmission performance of the frame structures with different repeated structure lengths for multiple times, and the overhead of a system can be saved.

The frame structure determining device in the embodiment of the present application may be an electronic device, for example, an electronic device with an operating system, or may be a component in an 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 frame structure determining device provided in the embodiment of the present application can implement each process implemented by the method embodiment on the target device side, and achieve the same technical effects, so that repetition is avoided, and no further description is given here.

Referring to fig. 17, an embodiment of the present application provides a frame structure determining apparatus 170, and the frame structure determining apparatus 170 may include a receiving module 171, a demodulating module 172, a calculating module 173, and a processing module 174. The receiving module 171 may be configured to receive the first signal sent by the third device according to the first configuration information, and receive the second signal sent by the second device according to the second configuration information. The demodulation module 172 may be configured to demodulate the first signal according to the first configuration information and the third configuration information to obtain data of the third signal. The calculating module 173 may be configured to calculate the first parameter of the third signal according to the data of the third signal demodulated by the demodulating module 172. The processing module 174 may be configured to obtain the channel delay information and report the channel delay information and the first parameter to the target device. The first configuration information is used for configuring signal parameters of the first signal, the second configuration information is used for configuring signal parameters of the second signal, and the third configuration information is used for configuring signal parameters of the third signal; the first signal, the second signal and the third signal are all for: and obtaining a first parameter or obtaining channel delay information.

In one possible implementation, the demodulation module 172 may be specifically configured to demodulate the first signal according to a preset criterion; wherein the preset criteria include at least one of: based on the criteria of the differential signal structure, a maximum likelihood detection criterion, a minimum Euclidean distance criterion.

In one possible implementation, the third signal is: a baseband signal used when the third device performs target modulation on the second signal; wherein the target modulation is any one of: amplitude differential modulation, phase differential modulation, amplitude and phase differential modulation.

In one possible implementation, the target modulation is amplitude differential modulation and the modulation order is second order. The third signal carries bit information through the amplitude difference value of the first half symbol period and the second half symbol period of the first symbol period, and the length of the first symbol period is twice of that of the first time unit; and if the bit information indicates the first value, the amplitude value of the third signal is the first amplitude value; if the bit information indicates the second value, the amplitude value of the first half symbol period of the third signal is the second amplitude value, the amplitude value of the second half symbol period of the third signal is the third amplitude value, and the second amplitude value and the third amplitude value are different from each other. The third signal carries bit information through the amplitude difference value of the first half symbol period of the second symbol period and the second half symbol period of the second symbol period, and the length of the second symbol period is twice of that of the second time unit; and if the bit information indicates the first value, the amplitude value of the third signal is a fourth amplitude value; if the bit information indicates the second value, the amplitude value of the first half symbol period of the third signal is a fifth amplitude value, the amplitude value of the second half symbol period of the third signal is a sixth amplitude value, and the fifth amplitude value and the sixth amplitude value are different from each other.

In one possible implementation, the target modulation is a phase differential modulation and the modulation order is second order. The third signal carries bit information through the phase difference value between the first half symbol period of the first symbol period and the second half symbol period of the first symbol period, and the length of the first symbol period is twice of that of the first time unit; and if the bit information indicates the first value, the phase value of the third signal is the first phase value; if the bit information indicates the second value, the phase value of the first half symbol period of the third signal is the second phase value, and the phase value of the second half symbol period of the third signal is the third phase value, wherein the second phase value and the third phase value are different from each other. The third signal carries bit information through the phase difference value between the first half symbol period of the second symbol period and the second half symbol period of the second symbol period, and the length of the second symbol period is twice of that of the second time unit; and if the bit information indicates the first value, the phase value of the third signal is a fourth phase value; if the bit information indicates the second value, the phase value of the first half symbol period of the third signal is a fifth phase value, the phase value of the second half symbol period of the third signal is a sixth phase value, and the fifth phase value and the sixth phase value are different from each other.

In one possible implementation, the target modulation is amplitude and phase differential modulation, and the modulation order is second order. The third signal carries bit information through the amplitude and phase difference scores of the first half of the first symbol period and the second half of the first symbol period, and the length of the first symbol period is twice as long as the first time unit; if the bit information indicates the first value, the amplitude value of the third signal is the first amplitude value, and the phase value of the third signal is the first phase value; if the bit information indicates the second value, the amplitude value of the first half symbol period of the third signal is the second amplitude value, the phase value of the first half symbol period of the third signal is the second phase value, the amplitude value of the second half symbol period of the third signal is the third amplitude value, the phase value of the second half symbol period of the third signal is the third phase value, the second amplitude value and the third amplitude value are different, and the second phase value and the third phase value are different. The third signal carries bit information through the amplitude and phase difference scores of the first half of the second symbol period and the second half of the second symbol period, and the length of the second symbol period is twice of that of the second time unit; if the bit information indicates the first value, the amplitude value of the third signal is a fourth amplitude value, and the phase value of the third signal is a fourth phase value; if the bit information indicates the second value, the amplitude value of the first half symbol period of the third signal is a fifth amplitude value, the phase value of the first half symbol period of the third signal is a fifth phase value, the amplitude value of the second half symbol period of the third signal is a sixth amplitude value, the phase value of the second half symbol period of the third signal is a sixth phase value, the fifth amplitude value and the sixth amplitude value are different from each other, and the fifth phase value and the sixth phase value are different from each other.

In a possible implementation manner, the first time unit and the second time unit may be any one of the following: symbols, slots, subframes, frames. And/or the first value is bit 0 and the second value is bit 1; alternatively, the first value is bit 1 and the second value is bit 0.

In one possible implementation, the processing module 174 may be specifically configured to obtain the channel delay information based on the first parameter; or, based on the first signal and the second signal, acquiring the channel delay information.

In a possible implementation manner, the processing module 174 may specifically be configured to report the channel delay information to the target device in a first reporting manner according to the fourth configuration information, and report the first parameter to the target device in a second reporting manner, where the first reporting manner is different from the second reporting manner. Wherein the fourth configuration information is used for configuring at least one of the following: the reporting mode of the channel time delay information, the reporting time-frequency resource of the channel time delay information, the bearing mode of the channel time delay information, the reporting mode of the first parameter, the reporting time-frequency resource of the first parameter and the bearing mode of the first parameter.

In a possible implementation manner, the channel delay information may be used to indicate at least one of the following: the first transmission delay, the first delay spread, the second transmission delay, the second delay spread, the third transmission delay, the third delay spread. The first transmission delay is the channel transmission delay between the second device and the third device, and the first delay is the channel delay spread between the second device and the third device; the second transmission delay is the channel transmission delay between the first device and the third device, and the second delay spread is the channel delay spread between the first device and the third device; the third transmission delay is a channel transmission delay between the first device and the second device, and the third delay spread is a channel delay spread between the first device and the second device.

In a possible implementation manner, the first reporting manner may include any one of the following: reporting the first transmission delay, the first delay spread, the second transmission delay, the second delay spread, the third transmission delay and the third delay spread respectively; reporting the sum of the first transmission delay and the second transmission delay, the sum of the first delay spread and the second delay spread, the third transmission delay and the third delay spread respectively; and reporting the sum of the first transmission delay and the second transmission delay and the minimum transmission delay in the third transmission delay, and reporting the sum of the first delay spread and the second delay spread and the maximum delay spread in the third delay spread.

In one possible implementation, the first parameter may include any one of: bit error rate, bit error rate and signal to noise ratio. The second reporting mode includes any one of the following: only reporting the first parameter of the first target signal; reporting only the first parameter of the second target signal; and simultaneously reporting the first parameter of the first target signal and the first parameter of the second target signal. Wherein the first target signal is: a third signal having a length of the first symbol period; the second target signal is: and a third signal having a length of the second symbol period.

In the frame structure determining device provided in the embodiment of the present application, since the frame structure determining device may demodulate the received first signal according to the configuration information to obtain data of the third signal, and may calculate, according to the data of the third signal, a first parameter of the third signal, and may report the acquired channel delay information and the calculated first parameter to the target device, the target device may not need to estimate the channel delay information any more, and may determine the target frame structure directly through the channel delay information and the first parameter, thereby saving overhead of the system.

The frame structure determining 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.

In connection with fig. 18, the embodiment of the present application provides a frame structure determining apparatus 180, and the frame structure determining apparatus 180 may include a transmitting module 181. The transmitting module 181 may be configured to transmit the second signal according to second configuration information, where the second configuration information is used to configure signal parameters of the second signal. Wherein the second signal comprises: a first portion, a second portion, a third portion, and a fourth portion; the first portion and the second portion satisfy: the length is the first time unit, and the included data are identical; the third and fourth parts satisfy: the lengths are the second time units, and the included data parts are the same; the length of the first time unit is different from the length of the second time unit.

In a possible implementation manner, each of the first time unit and the second time unit may be any one of the following: symbols, slots, subframes, frames. And/or the data in the target time unit may be: generating a non-random sequence or a random sequence according to a preset rule; the target time unit is a first time unit or a second time unit.

In a possible implementation manner, the signal parameters of the second signal may include at least one of the following: the type of the second signal, the length of the second signal, and the time-frequency resource of the second signal.

In one possible implementation, the second signal may be: a signal of a radio frequency carrier is provided to the third device.

In the frame structure determining apparatus provided in the embodiment of the present application, since the frame structure determining apparatus may send the second signal according to the second configuration information, the first portion and the second portion in the second signal satisfy: the length is the first time unit, and the included data are identical; the third and fourth parts of the second signal satisfy: the lengths are the second time units, and the included data parts are the same; and the length of the first time unit is different from that of the second time unit, so that after the first device receives the second signal, the first device can acquire the channel delay information and the first parameter based on the second signal, so that the target device can further determine the target frame structure, and the overhead of the system can be saved.

The frame structure determining 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.

In connection with fig. 19, an embodiment of the present application provides a frame structure determining apparatus 190, and the frame structure determining apparatus 190 may include a receiving module 191, a modulating module 192, and a transmitting module 193. The receiving module 191 may be configured to receive, according to the second configuration information, a second signal sent by the second device. The modulation module 192 may be configured to modulate the second signal according to the first configuration information and the third configuration information by using the generated third signal to obtain the first signal. The transmitting module 193 may be configured to transmit the first signal according to the first configuration information. The first configuration information is used for configuring signal parameters of the first signal, the second configuration information is used for configuring signal parameters of the second signal, and the third configuration information is used for configuring signal parameters of the third signal; the first signal, the second signal and the third signal are all for: and obtaining a first parameter of the third signal or obtaining channel delay information.

In the frame structure determining device provided in the embodiment of the present application, since the frame structure determining device may modulate the received second signal according to the configuration information by using the generated third signal to obtain the first signal, and send the first signal, after the first signal is received by the first device, the channel delay information and the first parameter may be obtained based on the first signal, so that the target device may further determine the target frame structure, thereby saving overhead of the system.

The frame structure determining 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.

Optionally, as shown in fig. 20, the embodiment of the present application further provides a communication device 2000, including a processor 2001 and a memory 2002, where the memory 2002 stores a program or an instruction that can be executed on the processor 2001, for example, when the communication device 2000 is the first device, the program or the instruction implements the respective processes of the first device side method embodiment when executed by the processor 2001, and the same technical effect can be achieved. When the communication device 2000 is the second device, the program or the instruction, when executed by the processor 2001, realizes the respective processes of the second device side method embodiment, and the same technical effects can be achieved. When the communication device 2000 is the third device, the program or the instruction, when executed by the processor 2001, realizes the respective processes of the third device side method embodiment, and the same technical effects can be achieved. When the communication device 2000 is the target device, the program or the instruction, when executed by the processor 2001, 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 further description is omitted here.

The embodiment of the application also provides communication equipment, which comprises a processor and a communication interface, wherein the processor is used for configuring and sending target configuration information; the target configuration information is used for the first equipment to calculate a first parameter carried in a first signal, the first signal is a signal generated according to a second signal and a third signal, the third signal is a baseband signal for modulating the second signal, and the first parameter is a parameter of the third signal; according to the channel delay information and the first parameters reported by the first equipment, calculating second parameters corresponding to each frame structure in P frame structures, wherein P is a positive integer; determining a target frame structure adopted by data transmission from the P frame structures according to the P second parameters; or,

the communication interface is used for receiving a second signal sent by the second equipment according to the second configuration information; the processor is used for modulating the second signal according to the first configuration information and the third configuration information through the generated third signal to obtain a first signal; the communication interface is also used for sending a first signal according to the first configuration information; the first configuration information is used for configuring signal parameters of the first signal, the second configuration information is used for configuring signal parameters of the second signal, and the third configuration information is used for configuring signal parameters of the third signal; the first signal, the second signal and the third signal are all for: and obtaining a first parameter of the third signal or obtaining channel delay information.

The embodiment of the communication device corresponds to the embodiment of the frame structure determining method, and various implementation processes and implementation manners of the embodiment of the frame structure determining method can be applied to the embodiment of the communication device, and the same technical effects can be achieved. 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. 21 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. 21 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 the target device, processor 1010 may be configured to configure and send target configuration information; the target configuration information is used for the first equipment to calculate a first parameter carried in a first signal, the first signal is a signal generated according to a second signal and a third signal, the third signal is a baseband signal for modulating the second signal, and the first parameter is a parameter of the third signal; the method can be used for calculating a second parameter corresponding to each frame structure in P frame structures according to channel delay information and first parameters reported by the first equipment, wherein P is a positive integer; and can be used for determining a target frame structure adopted by data transmission from the P frame structures according to the P second parameters obtained by calculation.

In the terminal provided in the embodiment of the present application, since the terminal may configure and send the target configuration information for the first device to calculate the first parameter carried in the first signal, and may calculate the second parameter of any frame structure based on the channel delay information and the first parameter reported by the first device, and determine the optimal frame structure adopted by data transmission from the second parameter, it is unnecessary to estimate the delay of the channel first, and then estimate the transmission performance of the frame structures with different repetition structure lengths multiple times, so that the optimal frame structure may be determined, and overhead of the system may be saved.

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 terminal 1000 as an example of the first device, radio frequency unit 1001 may be configured to receive, according to the first configuration information, a first signal sent by the third device, and receive, according to the second configuration information, a second signal sent by the second device. The processor 1010 may be configured to demodulate the first signal according to the first configuration information and the third configuration information to obtain data of the third signal; and can be used to calculate the first parameter of the third signal based on the data of the third signal obtained by demodulation; and the method can be used for acquiring the channel delay information and reporting the channel delay information and the first parameter to the target equipment. The first configuration information is used for configuring signal parameters of the first signal, the second configuration information is used for configuring signal parameters of the second signal, and the third configuration information is used for configuring signal parameters of the third signal; the first signal, the second signal and the third signal are all for: and obtaining a first parameter or obtaining channel delay information.

In one possible implementation, the processor 1010 may be specifically configured to demodulate the first signal according to a preset criterion; wherein the preset criteria include at least one of: based on the criteria of the differential signal structure, a maximum likelihood detection criterion, a minimum Euclidean distance criterion.

In a possible implementation manner, the processor 1010 may be specifically configured to obtain the channel delay information based on the first parameter; or, based on the first signal and the second signal, acquiring the channel delay information.

In a possible implementation manner, the processor 1010 may be specifically configured to report the channel delay information to the target device in a first reporting manner according to the fourth configuration information, and report the first parameter to the target device in a second reporting manner, where the first reporting manner is different from the second reporting manner. Wherein the fourth configuration information is used for configuring at least one of the following: the reporting mode of the channel time delay information, the reporting time-frequency resource of the channel time delay information, the bearing mode of the channel time delay information, the reporting mode of the first parameter, the reporting time-frequency resource of the first parameter and the bearing mode of the first parameter.

In the terminal provided by the embodiment of the application, since the terminal can demodulate the received first signal according to the configuration information to obtain the data of the third signal, and can calculate the first parameter of the third signal according to the data of the third signal, and can report the acquired channel delay information and the calculated first parameter to the target device, the target device can be enabled to avoid estimating the channel delay information, and the target device can directly determine the target frame structure through the channel delay information and the first parameter, thereby saving the overhead of the system.

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 the example of the second device, radio frequency unit 1001 may be configured to send a second signal according to second configuration information, where the second configuration information is used to configure signal parameters of the second signal. Wherein the second signal comprises: a first portion, a second portion, a third portion, and a fourth portion; the first portion and the second portion satisfy: the length is the first time unit, and the included data are identical; the third and fourth parts satisfy: the lengths are the second time units, and the included data parts are the same; the length of the first time unit is different from the length of the second time unit.

In the terminal provided in the embodiment of the present application, since the terminal may send the second signal according to the second configuration information, and the first portion and the second portion in the second signal satisfy: the length is the first time unit, and the included data are identical; the third and fourth parts of the second signal satisfy: the lengths are the second time units, and the included data parts are the same; and the length of the first time unit is different from that of the second time unit, so that after the first device receives the second signal, the first device can acquire the channel delay information and the first parameter based on the second signal, so that the target device can further determine the target frame structure, and the overhead of the system can be saved.

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 an example, where radio frequency unit 1001 may be configured to receive, according to the second configuration information, a second signal sent by the second device. The processor 1010 may be configured to modulate the second signal with the generated third signal according to the first configuration information and the third configuration information to obtain the first signal. The radio frequency unit 1001 may be further configured to send a first signal according to the first configuration information. The first configuration information is used for configuring signal parameters of the first signal, the second configuration information is used for configuring signal parameters of the second signal, and the third configuration information is used for configuring signal parameters of the third signal; the first signal, the second signal and the third signal are all for: and obtaining a first parameter of the third signal or obtaining channel delay information.

In the terminal provided in the embodiment of the present application, since the terminal may modulate the received second signal according to the configuration information by using the generated third signal to obtain the first signal, and send the first signal, after the first signal is received by the first device, the first device may obtain the channel delay information and the first parameter based on the first signal, so as to further enable the target device to determine the target frame structure, thereby saving the overhead of the system.

In practical implementation, in the case where terminal 1000 is the third 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 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 above communication device as a network side device as an example, fig. 22 is a schematic hardware structure of the network side device. As shown in fig. 22, the network-side device 2200 includes: an antenna 221, a radio frequency device 222, a baseband device 223, a processor 224, and a memory 225. The antenna 221 is connected to a radio frequency device 222. In the uplink direction, the radio frequency device 222 receives information via the antenna 221, and transmits the received information to the baseband device 223 for processing. In the downlink direction, the baseband device 223 processes information to be transmitted, and transmits the processed information to the radio frequency device 222, and the radio frequency device 222 processes the received information and transmits the processed information through the antenna 221.

The method performed by the network side device in the above embodiment may be implemented in the baseband apparatus 223, and the baseband apparatus 223 includes a baseband processor.

The baseband apparatus 223 may, for example, include at least one baseband board, where a plurality of chips are disposed, as shown in fig. 22, where one chip, for example, a baseband processor, is connected to the memory 225 through a bus interface, so as to invoke a program in the memory 225 to perform the network device operation shown in the above method embodiment.

The network-side device may also include a network interface 226, such as a common public radio interface (common public radio interface, CPRI).

Specifically, the network side device 2200 of the embodiment of the present invention further includes: instructions or programs stored in the memory 225 and executable on the processor 224, the processor 224 invokes the instructions or programs in the memory 225 to perform the methods performed by the modules shown in fig. 16-19, and achieve the same technical effects, and are not repeated here.

Taking the network side device 2200 as the target device, the processor 224 may be configured to configure and send target configuration information; the target configuration information is used for the first equipment to calculate a first parameter carried in a first signal, the first signal is a signal generated according to a second signal and a third signal, the third signal is a baseband signal for modulating the second signal, and the first parameter is a parameter of the third signal; the method can be used for calculating a second parameter corresponding to each frame structure in P frame structures according to channel delay information and first parameters reported by the first equipment, wherein P is a positive integer; and can be used for determining a target frame structure adopted by data transmission from the P frame structures according to the P second parameters obtained by calculation.

In the network side device provided by the embodiment of the application, because the network side device can configure and send the target configuration information for the first device to calculate the first parameter carried in the first signal, and can calculate the second parameter of any frame structure based on the channel delay information and the first parameter reported by the first device, and determine the optimal frame structure adopted by data transmission from the second parameter, the optimal frame structure can be determined without estimating the delay of the channel first, and then estimating the transmission performance of the frame structures with different repeated structure lengths for multiple times, thereby saving the overhead of the system.

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.

Taking the network side device 2200 as the first device, the radio frequency device 222 may be configured to receive, according to the first configuration information, a first signal sent by the third device, and receive, according to the second configuration information, a second signal sent by the second device. The processor 224 may be configured to demodulate the first signal according to the first configuration information and the third configuration information to obtain data of the third signal; and can be used to calculate the first parameter of the third signal based on the data of the third signal obtained by demodulation; and the method can be used for acquiring the channel delay information and reporting the channel delay information and the first parameter to the target equipment. The first configuration information is used for configuring signal parameters of the first signal, the second configuration information is used for configuring signal parameters of the second signal, and the third configuration information is used for configuring signal parameters of the third signal; the first signal, the second signal and the third signal are all for: and obtaining a first parameter or obtaining channel delay information.

In one possible implementation, the processor 224 may be specifically configured to demodulate the first signal according to a preset criterion; wherein the preset criteria include at least one of: based on the criteria of the differential signal structure, a maximum likelihood detection criterion, a minimum Euclidean distance criterion.

In a possible implementation manner, the processor 224 may be specifically configured to obtain the channel delay information based on the first parameter; or, based on the first signal and the second signal, acquiring the channel delay information.

In a possible implementation manner, the processor 224 may be specifically configured to report the channel delay information to the target device in a first reporting manner according to the fourth configuration information, and report the first parameter to the target device in a second reporting manner, where the first reporting manner is different from the second reporting manner. Wherein the fourth configuration information is used for configuring at least one of the following: the reporting mode of the channel time delay information, the reporting time-frequency resource of the channel time delay information, the bearing mode of the channel time delay information, the reporting mode of the first parameter, the reporting time-frequency resource of the first parameter and the bearing mode of the first parameter.

In the network side device provided by the embodiment of the present application, since the network side device may demodulate the received first signal according to the configuration information to obtain data of the third signal, and may calculate the first parameter of the third signal according to the data of the third signal, and report the acquired channel delay information and the calculated first parameter to the target device, the target device may not need to estimate the channel delay information any more, and may determine the target frame structure directly through the channel delay information and the first parameter, thereby saving overhead of the system.

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 2200 as the second device, the radio frequency device 222 may be configured to send the second signal according to second configuration information, where the second configuration information is used to configure signal parameters of the second signal. Wherein the second signal comprises: a first portion, a second portion, a third portion, and a fourth portion; the first portion and the second portion satisfy: the length is the first time unit, and the included data are identical; the third and fourth parts satisfy: the lengths are the second time units, and the included data parts are the same; the length of the first time unit is different from the length of the second time unit.

In the network side device provided in the embodiment of the present application, since the network side device may send the second signal according to the second configuration information, the first portion and the second portion in the second signal satisfy: the length is the first time unit, and the included data are identical; the third and fourth parts of the second signal satisfy: the lengths are the second time units, and the included data parts are the same; and the length of the first time unit is different from that of the second time unit, so that after the first device receives the second signal, the first device can acquire the channel delay information and the first parameter based on the second signal, so that the target device can further determine the target frame structure, and the overhead of the system can be saved.

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 2200 as the third device, the radio frequency device 222 may be configured to receive, according to the second configuration information, a second signal sent by the second device. The processor 224 may be configured to modulate the second signal with the generated third signal according to the first configuration information and the third configuration information to obtain the first signal. The radio frequency device 222 may be further configured to transmit the first signal according to the first configuration information. The first configuration information is used for configuring signal parameters of the first signal, the second configuration information is used for configuring signal parameters of the second signal, and the third configuration information is used for configuring signal parameters of the third signal; the first signal, the second signal and the third signal are all for: and obtaining a first parameter of the third signal or obtaining channel delay information.

In the network side device provided in the embodiment of the present application, since the network side device may modulate the received second signal according to the configuration information by using the generated third signal to obtain the first signal, and send the first signal, after the first device receives the first signal, the first device may obtain the channel delay information and the first parameter based on the first signal, so as to further enable the target device to determine the target frame structure, thereby saving overhead of the system.

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.

The embodiment of the present application further provides a readable storage medium, where a program or an instruction is stored, and when the program or the instruction is executed by a processor, the processes of the embodiment of the method for determining a frame structure are implemented, and the same technical effects can be achieved, so that repetition is avoided, and no further description is given here.

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 embodiment of the frame structure determining method, and achieve the same technical effect, so that repetition is avoided, and no redundant description is provided herein.

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 embodiment of the frame structure determining method, and the same technical effects are achieved, so that repetition is avoided, and details are not repeated herein.

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 each process of the frame structure determining method embodiment, and can achieve the same technical effect, 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 frame structure determination method, the method comprising:

the target equipment configures and sends target configuration information; the target configuration information is used for a first device to calculate a first parameter carried in a first signal, the first signal is a signal generated according to a second signal and a third signal, the third signal is a baseband signal for modulating the second signal, and the first parameter is a parameter of the third signal;

the target device calculates a second parameter corresponding to each frame structure in P frame structures according to the channel delay information reported by the first device and the first parameter, wherein P is a positive integer;

and the target equipment determines a target frame structure adopted by data transmission from the P frame structures according to the P second parameters.

2. The method of claim 1, wherein the target device comprises any one of: the first device, the second device, the third device and the fourth device;

the first device is a back scattering communication BSC receiving device, the second device is a radio frequency source device, the third device is a BSC transmitting device, and the fourth device is: network node devices other than the first device, the second device and the third device.

3. The method of claim 1, wherein the second signal comprises: a first portion, a second portion, a third portion, and a fourth portion;

wherein the first portion and the second portion satisfy: the length is the first time unit, and the included data are identical; the third portion and the fourth portion satisfy: the lengths are the second time units, and the included data parts are the same;

the length of the first time unit is different from the length of the second time unit; the first time unit and the second time unit are any one of the following: symbols, slots, subframes, frames.

4. The method of claim 1, wherein the channel delay information is used to indicate a first target delay and a second target delay; the first target time delay is: the sum of the first channel transmission delay and the second channel transmission delay is the smallest channel transmission delay in the third channel transmission delay; the second target time delay is: the sum of the first channel delay spread and the second channel delay spread is the largest channel delay spread in the third channel delay spread;

Wherein the first channel transmission delay and the first channel delay spread are: a channel delay between the second device and the third device; the second channel transmission delay and the second channel delay spread are: a channel delay between the first device and the third device; the third channel transmission delay and the third channel delay spread are: and a channel delay between the first device and the second device.

5. The method of claim 1, wherein every two of the P frame structures satisfy: the repeat structure length is different and/or the number of repetitions is different.

6. The method of claim 1, wherein the first parameter comprises any one of: bit error rate, bit error rate and signal to noise ratio; the second parameter includes any one of: bit error rate, bit error rate and signal to noise ratio.

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

the target configuration information includes at least one of:

Third configuration information, wherein the third configuration information is used for configuring signal parameters of a third signal;

fourth configuration information for configuring at least one of: the reporting mode of the channel delay information, the reporting time-frequency resource of the channel delay information, the bearing mode of the channel delay information, the reporting mode of the first parameter, the reporting time-frequency resource of the first parameter and the bearing mode of the first parameter.

8. The method of claim 7, wherein the step of determining the position of the probe is performed,

the signal parameters of the first signal include at least one of: the reflection coefficient of the first signal, the type of the first signal, the length of the first signal, and the time-frequency resource of the first signal;

and/or the number of the groups of groups,

the signal parameters of the second signal include at least one of: the type of the second signal, the length of the second signal, and the time-frequency resource of the second signal;

and/or the number of the groups of groups,

the signal parameters of the third signal include at least one of: the type of the third signal, the length of the third signal, and the time-frequency resource of the third signal.

9. The method according to any one of claims 1 to 8, 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.

10. A frame structure determination method, the method comprising:

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

the first device demodulates the first signal according to the first configuration information and the third configuration information to obtain data of a third signal;

the first device calculates a first parameter of the third signal according to the data of the third signal;

the first equipment acquires channel delay information and reports the channel delay information and the first parameter to target equipment;

the first configuration information is used for configuring signal parameters of the first signal, the second configuration information is used for configuring signal parameters of the second signal, and the third configuration information is used for configuring signal parameters of the third signal;

the first signal, the second signal, and the third signal are each for: and obtaining the first parameter or obtaining the channel delay information.

11. The method of claim 10, wherein the step of determining the position of the first electrode is performed,

the demodulating the first signal includes:

The first device demodulates the first signal according to a preset criterion;

wherein the preset criteria include at least one of: based on the criteria of the differential signal structure, a maximum likelihood detection criterion, a minimum Euclidean distance criterion.

12. The method of claim 10, wherein the third signal is: a baseband signal used by the third device when performing target modulation on the second signal;

wherein the target modulation is any one of: amplitude differential modulation, phase differential modulation, amplitude and phase differential modulation.

13. The method of claim 12, wherein the target modulation is the amplitude differential modulation and the modulation order is second order;

the third signal carries bit information through the amplitude difference value of the first half symbol period of the first symbol period and the second half symbol period of the first symbol period, and the length of the first symbol period is twice of that of the first time unit; and if the bit information indicates a first value, the amplitude value of the third signal is the first amplitude value; if the bit information indicates a second value, the amplitude value of the first half symbol period of the third signal is a second amplitude value, the amplitude value of the second half symbol period of the third signal is a third amplitude value, and the second amplitude value and the third amplitude value are different from each other;

14. The method of claim 12, wherein the target modulation is the phase differential modulation and the modulation order is second order;

the third signal carries bit information through the phase difference value between the first half symbol period of the first symbol period and the second half symbol period of the first symbol period, and the length of the first symbol period is twice of that of the first time unit; and if the bit information indicates a first value, the phase value of the third signal is the first phase value; if the bit information indicates a second value, the phase value of the first half symbol period of the third signal is a second phase value, the phase value of the second half symbol period of the third signal is a third phase value, and the second phase value and the third phase value are different from each other;

15. The method of claim 12, wherein the target modulation is the amplitude and phase differential modulation and the modulation order is second order;

the third signal carries bit information through the amplitude and phase difference value of the first half symbol period and the second half symbol period of the first symbol period, and the length of the first symbol period is twice as long as that of the first time unit; and if the bit information indicates a first value, the amplitude value of the third signal is the first amplitude value, and the phase value of the third signal is the first phase value; if the bit information indicates a second value, the amplitude value of the first half symbol period of the third signal is a second amplitude value, the phase value of the first half symbol period of the third signal is a second phase value, the amplitude value of the second half symbol period of the third signal is a third amplitude value, the phase value of the second half symbol period of the third signal is a third phase value, the second amplitude value and the third amplitude value are different from each other, and the second phase value and the third phase value are different from each other;

The third signal carries bit information through the amplitude and phase difference value of the first half symbol period of the second symbol period and the second half symbol period of the second symbol period, and the length of the second symbol period is twice of that of the second time unit; and if the bit information indicates the first value, the amplitude value of the third signal is a fourth amplitude value, and the phase value of the third signal is a fourth phase value; if the bit information indicates the second value, the amplitude value of the first half symbol period of the third signal is a fifth amplitude value, the phase value of the first half symbol period of the third signal is a fifth phase value, the amplitude value of the second half symbol period of the third signal is a sixth amplitude value, the phase value of the second half symbol period of the third signal is a sixth phase value, the fifth amplitude value and the sixth amplitude value are different from each other, and the fifth phase value and the sixth phase value are different from each other.

16. The method according to any one of claims 13 to 15, wherein,

the first time unit and the second time unit are any one of the following: symbols, slots, subframes, frames;

And/or the number of the groups of groups,

the first value is bit 0 and the second value is bit 1; alternatively, the first value is bit 1 and the second value is bit 0.

17. The method according to any of claims 10 to 15, wherein the first device obtains channel delay information, comprising:

the first device obtains the channel delay information based on the first parameter;

or,

the first device obtains the channel delay information based on the first signal and the second signal.

18. The method according to any one of claims 10 to 15, wherein reporting the channel delay information and the first parameter to a target device comprises:

the first device reports the channel time delay information to the target device in a first reporting mode according to fourth configuration information, and reports the first parameter to the target device in a second reporting mode, wherein the first reporting mode is different from the second reporting mode;

wherein the fourth configuration information is used for configuring at least one of the following: the reporting mode of the channel delay information, the reporting time-frequency resource of the channel delay information, the bearing mode of the channel delay information, the reporting mode of the first parameter, the reporting time-frequency resource of the first parameter and the bearing mode of the first parameter.

19. The method of claim 18, wherein the channel delay information is used to indicate at least one of: a first transmission delay, a first delay spread, a second transmission delay, a second delay spread, a third transmission delay, a third delay spread;

wherein the first transmission delay is a channel transmission delay between the second device and the third device, and the first delay spread is a channel delay spread between the second device and the third device; the second transmission delay is a channel transmission delay between the first device and the third device, and the second delay spread is a channel delay spread between the first device and the third device; the third transmission delay is a channel transmission delay between the first device and the second device, and the third delay spread is a channel delay spread between the first device and the second device.

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

the first reporting mode includes any one of the following:

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

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

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

21. The method of claim 18, wherein the first parameter comprises any one of: bit error rate, bit error rate and signal to noise ratio;

the second reporting mode includes any one of the following:

reporting only the first parameter of the first target signal;

reporting only the first parameter of the second target signal;

simultaneously reporting the first parameter of the first target signal and the first parameter of the second target signal;

wherein the first target signal is: the third signal having a length of the first symbol period; the second target signal is: the third signal having a length of the second symbol period.

22. A frame structure determination method, the method comprising:

The second device sends a second signal according to second configuration information, wherein the second configuration information is used for configuring signal parameters of the second signal;

wherein the second signal comprises: a first portion, a second portion, a third portion, and a fourth portion; the first portion and the second portion satisfy: the length is the first time unit, and the included data are identical; the third portion and the fourth portion satisfy: the lengths are the second time units, and the included data parts are the same; the length of the first time unit is different from the length of the second time unit.

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

and/or the number of the groups of groups,

the data in the target time unit are: generating a non-random sequence or a random sequence according to a preset rule; wherein the target time unit is the first time unit or the second time unit.

24. The method according to claim 22 or 23, wherein the signal parameters of the second signal comprise at least one of: the type of the second signal, the length of the second signal, and the time-frequency resource of the second signal.

25. The method of any one of claims 22 to 24, wherein the second signal is: a signal of a radio frequency carrier is provided to the third device.

26. A frame structure determination method, the method comprising:

the third device receives a second signal sent by the second device according to the second configuration information;

the third device modulates the second signal according to the first configuration information and the third configuration information through the generated third signal to obtain a first signal;

the third device sends the first signal according to the first configuration information;

the first signal, the second signal, and the third signal are each for: and obtaining the first parameter of the third signal or obtaining channel delay information.

27. The method of claim 26, wherein the step of determining the position of the probe is performed,

And/or the number of the groups of groups,

and/or the number of the groups of groups,

28. The method according to claim 26 or 27, wherein the second signal comprises: a first portion, a second portion, a third portion, and a fourth portion;

29. The method of any one of claims 26 to 28, wherein the third signal is: a baseband signal used by the third device when performing target modulation on the second signal;

30. The method of claim 29, wherein the target modulation is the amplitude differential modulation and the modulation order is second order;

31. The method of claim 29, wherein the target modulation is the phase differential modulation and the modulation order is second order;

32. The method of claim 29, wherein the target modulation is the amplitude and phase differential modulation and the modulation order is second order;

the third signal carries bit information through the amplitude and phase difference value of the first half symbol period of the second symbol period and the second half symbol period of the second symbol period, and the length of the second symbol period is twice of that of the second time unit; if the bit information indicates the first value, the amplitude value of the third signal is a fourth amplitude value, and the phase value of the third signal is a fourth phase value; if the bit information indicates the second value, the amplitude value of the first half symbol period of the third signal is a fifth amplitude value, the phase value of the first half symbol period of the third signal is a fifth phase value, the amplitude value of the second half symbol period of the third signal is a sixth amplitude value, the phase value of the second half symbol period of the third signal is a sixth phase value, the fifth amplitude value and the fifth amplitude value are different from each other, and the sixth phase value are different from each other.

33. The method according to any one of claims 30 to 32, wherein,

and/or the number of the groups of groups,

34. A frame structure determining device, characterized in that the device comprises a configuration module, a calculation module and a determining module;

the configuration module is used for configuring and sending target configuration information; the target configuration information is used for calculating a first parameter of a third signal carried in a first signal by a first device, the first signal is a signal generated according to a second signal and the third signal, the third signal is a baseband signal for modulating the second signal, and the first parameter is a parameter of the third signal;

the calculating module is configured to calculate, according to the channel delay information reported by the first device and the first parameter, a second parameter corresponding to each frame structure in P frame structures, where P is a positive integer;

the determining module is configured to determine, according to the P second parameters calculated by the calculating module, a target frame structure adopted by data transmission from the P frame structures.

35. A frame structure determining device, characterized in that the device comprises a receiving module, a demodulating module, a calculating module and a processing module;

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

the demodulation module is used for demodulating the first signal according to the first configuration information and the third configuration information to obtain data of a third signal;

the calculation module is used for calculating a first parameter of the third signal according to the data of the third signal obtained by demodulation of the demodulation module;

the processing module is used for acquiring channel delay information and reporting the channel delay information and the first parameter to target equipment;

36. A frame structure determining apparatus, characterized in that the apparatus comprises a transmitting module;

the sending module is used for sending a second signal according to second configuration information, and the second configuration information is used for configuring signal parameters of the second signal;

37. A frame structure determining device, characterized in that the device comprises a receiving module, a modulating module and a transmitting module;

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

the modulation module is used for modulating the second signal through the generated third signal according to the first configuration information and the third configuration information to obtain a first signal;

the sending module is used for sending the first signal according to the first configuration information;

38. 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 frame structure determination method of any one of claims 1 to 9, or the steps of the frame structure determination method of any one of claims 10 to 21, or the steps of the frame structure determination method of any one of claims 22 to 25, or the steps of the frame structure determination method of any one of claims 26 to 33, when executed by the processor.

39. A readable storage medium, characterized in that the readable storage medium has stored thereon a program or instructions which, when executed by a processor, realizes the steps of the frame structure determination method according to any one of claims 1 to 9, or the steps of the frame structure determination method according to any one of claims 10 to 21, or the steps of the frame structure determination method according to any one of claims 22 to 25, or the steps of the frame structure determination method according to any one of claims 26 to 33.