WO2024032607A1

WO2024032607A1 - Frame structure determination method and apparatus, and communication device and storage medium

Info

Publication number: WO2024032607A1
Application number: PCT/CN2023/111735
Authority: WO
Inventors: 黄伟; 谭俊杰
Original assignee: 维沃移动通信有限公司
Priority date: 2022-08-10
Filing date: 2023-08-08
Publication date: 2024-02-15
Also published as: CN117640006A

Abstract

The present application belongs to the field of communications. Disclosed are a frame structure determination method and apparatus, and a communication device and a storage medium. The frame structure determination method in the embodiments of the present application comprises: a target device configuring and sending target configuration information, wherein the target configuration information is used by 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 calculating, according to channel delay information, which is reported by the first device, and the first parameter, a second parameter corresponding to each frame structure among P frame structures, wherein P is a positive integer; and the target device determining, from among the P frame structures and according to P second parameters, a target frame structure used for data transmission.

Description

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

Cross-references to related applications

This application claims priority to the Chinese patent with application number 202210957880.6 filed with the China Patent Office on August 10, 2022, the entire content of which is incorporated herein by reference.

Technical field

The present application belongs to the field of communication technology, and specifically relates to a frame structure determination method, device, communication equipment and storage medium.

Background technique

In the Backscatter Communication (BSC) system, when determining the frame structure of data transmission, the system side can first estimate the channel delay, and then estimate the transmission performance of a frame structure with a repeated structure length based on the delay. (Specifically, it can be signal-to-noise ratio and bit error rate), and after separately estimating the transmission performance of frame structures with multiple repeat structure lengths, the optimal frame structure is determined from the frame structures with multiple repeat structure lengths.

However, according to the above method, since the system side needs to estimate the channel delay first, and then estimate the transmission performance of the frame structure with different repeated structure lengths multiple times to determine the optimal frame structure, this will lead to excessive training overhead of the system. big.

Contents of the invention

Embodiments of the present application provide a frame structure determination method, device, communication equipment and storage medium, which can solve the problem of excessive system training overhead.

In a first aspect, a frame structure determination method is provided. The method includes: a target device configures and sends target configuration information; the target configuration information is used by the first device to calculate the first parameter carried in the first signal, and the first signal is based on The signal generated by the second signal and the third signal, the third signal is a baseband signal that modulates the second signal, and the first parameter is the parameter of the third signal; the target device is based on the channel delay information reported by the first device and the first Parameter, calculate the second parameter corresponding to each frame structure in P types of frame structures, P is a positive integer; the target device determines the target frame structure used for data transmission from the P types of frame structures based on the P second parameters.

In a second aspect, a frame structure determination device is provided. The device includes a configuration module, a calculation module and a determination module; the configuration module is used to configure and send target configuration information; the target configuration information is used in the first device to calculate the first signal. The first parameter carried, the first signal is a signal generated based on the second signal and the third signal, the third signal is a baseband signal that modulates the second signal, and the first parameter is the parameter of the third signal; the calculation module uses Calculate the second parameters corresponding to each of the P frame structures according to the channel delay information and the first parameters reported by the first device, where P is a positive integer; the determination module is used to calculate the P parameters calculated by the calculation module The second parameter determines the target frame structure used for data transmission from P types of frame structures.

In a third aspect, a frame structure determination method is provided. The method includes: a first device receiving a first signal sent by a third device according to the first configuration information, and receiving a first signal sent by the second device according to the second configuration information. Two signals; the first device demodulates the first signal according to the first configuration information and the third configuration information to obtain the data of the third signal; the first device calculates the first parameter of the third signal according to the data of the third signal ; The first device obtains the channel delay information, and reports the channel delay information and the first parameter to the target device; wherein the first configuration information is used to configure the signal parameters of the first signal, and the second configuration information is used to configure the second signal. The signal parameters of the signal, the third configuration information is used to configure the signal parameters of the third signal; the first signal, the second signal and the third signal are all used to: obtain the first parameter, or obtain channel delay information.

In a fourth aspect, a frame structure determination device is provided, which device includes a receiving module, a demodulation module, a calculation module, and a processing module; the receiving module is configured to receive a first signal sent by a 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 is used to demodulate the first signal according to the first configuration information and the third configuration information to obtain the data of the third signal; The calculation module is used to calculate the first parameter of the third signal based on the data of the third signal demodulated by the demodulation module; the processing module is used to obtain the channel delay information and report the channel delay information and the first parameter to the target device; wherein the first configuration information is used to configure the signal parameters of the first signal, the second configuration information is used to configure the signal parameters of the second signal, and the third configuration information is used to configure the signal parameters of the third signal; first The signal, the second signal and the third signal are all used to: obtain the first parameter or obtain channel delay information.

In a fifth aspect, a frame structure determination method is provided, which method includes: the second device sends a second signal according to second configuration information, and the second configuration information is used to configure signal parameters of the second signal; wherein, the second signal Contains: the first part, the second part, the third part and the fourth part; the first part and the second part satisfy: the length is the first time unit, and the data included is exactly the same; the third part and the fourth part satisfy: The length is the second time unit and includes the same data part; the length of the first time unit is different from the length of the second time unit.

In a sixth aspect, a frame structure determination device is provided, which device includes a sending module; a sending module configured to send a second signal according to second configuration information, and the second configuration information is used to configure signal parameters of the second signal; wherein , the second signal includes: the first part, the second part, the third part and the fourth part; the first part and the second part satisfy: the length is the first time unit, And the data included are exactly the same; the third part and the fourth part meet the following requirements: the length is the second time unit, and the included data part is the same; the length of the first time unit is different from the length of the second time unit.

In a seventh aspect, a frame structure determination method is provided. The method includes: the third device receives the second signal sent by the second device according to the second configuration information; the third device according to the first configuration information and the third configuration information, The second signal is modulated by the generated third signal to obtain the first signal; the third device sends the first signal according to the first configuration information; wherein the first configuration information is used to configure the signal parameters of the first signal, and the second configuration information Used to configure the signal parameters of the second signal, the third configuration information is used to configure the signal parameters of the third signal; the first signal, the second signal and the third signal are all used to: obtain the first parameter of the third signal, or obtain Channel delay information.

In an eighth aspect, a frame structure determination device is provided, which device includes a receiving module, a modulation module and a sending module; the receiving module is used to receive the second signal sent by the second device according to the second configuration information; the modulating module is used to The second signal is modulated by the generated third signal according to the first configuration information and the third configuration information to obtain the first signal; the sending module is configured to send the first signal according to the first configuration information; wherein, the first configuration information used to configure the signal parameters of the first signal, the second configuration information is used to configure the signal parameters of the second signal, and the third configuration information is used to configure the signal parameters of the third signal; the first signal, the second signal and the third signal are all Used to: obtain the first parameter of the third signal, or obtain channel delay information.

In a ninth aspect, a communication device is provided. The communication device includes a processor and a memory. The memory stores a program or instructions that can be run on the processor. The program or instructions are implemented when executed by the processor. The steps of the method described in the first aspect, or the steps of implementing the method described in the third aspect, or the steps of the method described in the fifth aspect, or the steps of the method described in the seventh aspect.

In a tenth aspect, a communication device is provided, including a processor and a communication interface, wherein the processor is used to configure and send target configuration information; the target configuration information is used by the first device to calculate the first parameter carried in the first signal. , the first signal is a signal generated according to the second signal and the third signal, the third signal is a baseband signal that modulates the second signal, the first parameter is the parameter of the third signal; and according to the channel time reported by the first device Delay information and the first parameter, calculate the second parameter corresponding to each frame structure in P types of frame structures, P is a positive integer; and determine the target frame used for data transmission from the P types of frame structures based on the P second parameters structure; or,

The communication interface is used to receive a first signal sent by a third device according to the first configuration information, and receive a second signal sent by a second device according to the second configuration information; the first device according to the first configuration information and the third device configure the information, demodulate the first signal to obtain the data of the third signal; the processor is used to calculate the first parameter of the third signal according to the data of the third signal; and obtain the channel delay information, and calculate the channel delay information. The delay information and the first parameters are reported to the target device; wherein the first configuration information is used to configure the signal parameters of the first signal, the second configuration information is used to configure the signal parameters of the second signal, and the third configuration information is used to configure the third signal. The signal parameters of the signal; the first signal, the second signal and the third signal are all used to: obtain the first parameter, or obtain channel delay information; or,

The communication interface is used to send a second signal according to the second configuration information, and the second configuration information is used to configure signal parameters of the second signal; wherein the second signal includes: a first part, a second part, a third part and The fourth part; the first part and the second part satisfy: the length is the first time unit, and the data included is the same; the third part and the fourth part satisfy: the length is the second time unit, and the data included is 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 to receive the second signal sent by the second device according to the second configuration information; the processor is used to modulate the second signal by the generated third signal according to the first configuration information and the third configuration information, to obtain the first signal; the communication interface is also used to send the first signal according to the first configuration information; wherein the first configuration information is used to configure the signal parameters of the first signal, and the second configuration information is used to configure the signal of the second signal Parameters, the third configuration information is used to configure the signal parameters of the third signal; the first signal, the second signal and the third signal are all used to: obtain the first parameter of the third signal, or obtain channel delay information.

In an eleventh aspect, a communication system is provided, including: a target device as described in the first aspect, a first device as described in the third aspect, a second device as described in the fifth aspect, and a target device as described in the seventh aspect. The third device, wherein the communication system can implement the steps of the frame structure determination method as described in the first aspect, and/or implement the steps of the frame structure determination method as described in the third aspect, and/or Or, implement the steps of the frame structure determination method as described in the fifth aspect, and/or implement the steps of the frame structure determination method as described in the seventh aspect.

In a twelfth aspect, a readable storage medium is provided. Programs or instructions are stored on the readable storage medium. When the programs or instructions are executed by a processor, the steps of the method described in the first aspect are implemented, or the steps of the method are implemented. The steps of the method described in the third aspect, or the steps of implementing the method described in the fifth aspect, or the steps of the method described in the seventh aspect.

In a thirteenth aspect, a chip is provided. The chip includes a processor and a communication interface. The communication interface is coupled to the processor. The processor is used to run programs or instructions to implement the method described in the first aspect. Method, or implement the method as described in the third aspect, or implement the method as described in the fifth aspect, or implement the method as described in the seventh aspect.

In a fourteenth aspect, a computer program/program product is provided, 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 as described in the first aspect method steps, or Implement the steps of the method described in the third aspect, or implement the steps of the method described in the fifth aspect, or implement the steps of the method described in the seventh aspect.

In this embodiment of the present application, the target device can configure and send target configuration information; the target configuration information is used by the first device to calculate the first parameter carried in the first signal, and the first signal is generated based on the second signal and the third signal. signal, the third signal is a baseband signal that modulates the second signal, and the first parameter is the parameter of the third signal; and the target device can calculate P frame structures based on the channel delay information reported by the first device and the first parameter. The second parameter corresponding to each frame structure in , P is a positive integer; and the target device can determine the target frame structure used for data transmission from P types of frame structures based on the P second parameters. Through this solution, 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 any arbitrary calculation based on the channel delay information and the first parameter reported by the first device. The second parameter of the frame structure is used to determine the optimal frame structure for data transmission. Therefore, there is no need to estimate the channel delay first, and then estimate the transmission performance of the frame structure with different repeating structure lengths multiple times to determine the optimal frame structure. Frame structure, thus saving system overhead.

Description of drawings

Figure 1 is a block diagram of a wireless communication system applicable to the embodiment of the present application;

Figure 2 is a schematic structural diagram of BSC equipment;

Figure 3 is a schematic diagram of the principle of modulating signals of BSC equipment;

Figure 4 is a schematic diagram of the BSC system architecture;

Figure 5 is a schematic diagram of the time domain structure of the radio frequency carrier signal;

Figure 6 is a schematic diagram of the radio frequency carrier signal and the BSC baseband signal;

Figure 7 is one of the flow charts of a frame structure determination method provided by an embodiment of the present application;

Figure 8 is the second flow chart of a frame structure determination method provided by an embodiment of the present application;

Figure 9 is the third flowchart of a frame structure determination method provided by an embodiment of the present application;

Figure 10 is a schematic diagram of a frame structure determination method provided by an embodiment of the present application;

Figure 11 is the fourth flowchart of a frame structure determination method provided by an embodiment of the present application;

Figure 12 is one of the schematic diagrams of the radio frequency carrier signal and baseband signal during the data transmission stage;

Figure 13 is the second schematic diagram of the radio frequency carrier signal and baseband signal in the data transmission stage;

Figure 14 is the third schematic diagram of the radio frequency carrier signal and baseband signal in the data transmission stage;

Figure 15 is the fourth schematic diagram of the radio frequency carrier signal and baseband signal in the data transmission stage;

Figure 16 is one of the structural schematic diagrams of a frame structure determination device provided by an embodiment of the present application;

Figure 17 is one of the structural schematic diagrams of a frame structure determination device provided by an embodiment of the present application;

Figure 18 is one of the structural schematic diagrams of a frame structure determination device provided by an embodiment of the present application;

Figure 19 is one of the structural schematic diagrams of a frame structure determination device provided by an embodiment of the present application;

Figure 20 is a schematic diagram of a communication device provided by an embodiment of the present application;

Figure 21 is a schematic diagram of the hardware structure when the communication device provided by the embodiment of the present application is a terminal;

Figure 22 is a schematic diagram of the hardware structure when the communication device provided by the embodiment of the present application is a network-side device.

Detailed ways

The technical solutions in the embodiments of the present application will be clearly described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, but not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art fall within the scope of protection of this application.

The terms "first", "second", etc. in the description and claims of this application are used to distinguish similar objects and are not used to describe a specific order or sequence. It is to be understood that the terms so used are interchangeable under appropriate circumstances so that the embodiments of the present application can be practiced in sequences other than those illustrated or described herein, and that "first" and "second" are distinguished objects It is usually one type, and the number of objects is not limited. For example, the first object can be one or multiple. In addition, "and/or" in the description and claims indicates at least one of the connected objects, and the character "/" generally indicates that the related objects are in an "or" relationship.

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

Figure 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 Side device 12. The terminal 11 may be a mobile phone, a tablet computer (Tablet Personal Computer), a laptop computer (Laptop Computer), or a notebook computer, a personal digital assistant (Personal Digital Assistant, PDA), a palmtop computer, a netbook, or a super mobile personal computer. (ultra-mobile personal computer, UMPC), mobile Internet device (Mobile Internet Device, MID), augmented reality (AR)/virtual reality (VR) equipment, robots, wearable devices (Wearable Device) , vehicle-mounted equipment (VUE), pedestrian terminal (PUE), smart home (home equipment with wireless communication functions, such as refrigerators, TVs, washing machines or furniture, etc.), game consoles, personal computers (PC), teller machines or self-service Terminal devices such as mobile phones, wearable devices include: smart watches, smart bracelets, smart headphones, smart glasses, smart jewelry (smart bracelets, smart bracelets, smart rings, smart necklaces, smart anklets, smart anklets, etc.), Smart wristbands, smart clothing, etc. It should be noted that the embodiment of the present application does not limit the specific type of the terminal 11. The network side device 12 may include an access network device or a core network device, where the access network device 12 may also be called a radio access network device, a radio access network (Radio Access Network, RAN), a radio access network function or Wireless access network unit. The access network device 12 may include a base station, a WLAN access point or a WiFi node, etc. The base station may be called a Node B, an evolved Node B (eNB), an access point, a Base Transceiver Station (BTS), a radio Base station, radio transceiver, Basic Service Set (BSS), Extended Service Set (ESS), Home Node B, Home Evolved Node B, Transmitting Receiving Point (TRP) or all Some other appropriate terminology in the above field, as long as the same technical effect is achieved, the base station is not limited to specific technical terms. It should be noted that in the embodiment of this application, only the base station in the NR system is used as an example for introduction, and The specific type of base station is not limited.

The frame structure determination method, device, communication device and storage medium provided by the embodiments of the present application will be described in detail below with reference to the accompanying drawings through some embodiments and application scenarios.

BSC means that the BSC device uses radio frequency signals from other devices or the environment to perform signal modulation to transmit the information of the BSC device. It is a relatively typical passive IoT device. Figure 2 shows a schematic structural diagram of the BSC equipment. As shown in (a) in Figure 2, the BSC sending equipment mainly includes the following main modules:

Antenna unit 21: used to receive radio frequency signals and control commands, and at the same time, used to send modulated backscatter signals;

Energy collection module or energy supply module 22: used for BSC sending equipment to collect radio frequency energy, or other energy collection, where the energy includes but is not limited to solar energy, kinetic energy, mechanical energy, thermal energy, etc.; the energy collection module or energy supply module 22 can provide power to all other modules in the BSC sending equipment. It should be noted that the energy collection module or energy supply module 22 can also be a battery energy supply module, in which case the BSC sending device is a semi-passive device;

Microcontroller 23: used to control baseband signal processing, energy storage or data scheduling status, switch switching, system synchronization, etc.;

Signal receiving module 24: used to demodulate BSC receiving equipment or other network nodes, sent control commands or data, etc.;

Channel coding and modulation module 25: used to perform channel coding and signal modulation under the control of the microcontroller 23, and to realize modulation by selecting different load impedances under the control of the microcontroller 23 through the selection switch;

Memory or sensing module 26: used to store device identification (Identity Document, ID) information, device location information or sensing data, etc.

In addition to the typical building blocks mentioned above, future BSC transmitting equipment can even integrate tunnel diode amplifier modules, low-noise amplifier modules, etc. to improve the receiving sensitivity and transmit power of BSC transmitting equipment.

The BSC receiving device in a traditional radio frequency identification system is usually a reader, as shown in (b) in Figure 2. The BSC receiving device mainly includes the following main modules:

Antenna unit 27: used to receive modulated backscattered signals;

Backscattered signal detection module 28: used to detect the backscattered signal sent by the BSC transmitting equipment (including ASK detection, PSK detection, FSK detection or QAM detection, etc.).

Demodulation and decoding module 29: used to demodulate and decode the detected signal to restore the original information stream.

Figure 3 shows a schematic diagram of the principle of modulating signals of BSC equipment. As shown in Figure 3, BSC equipment can control the reflection coefficient Γ of the circuit by adjusting its internal impedance, thereby changing the amplitude, frequency, and phase of the incident signal S _in (t). etc. to achieve signal modulation. The reflection coefficient of the signal can be characterized by the following formula (1):

Among them, Z ₀ is the antenna characteristic impedance, and Z ₁ is the load impedance. Assuming that the incident signal is S _in (t), the output signal is Therefore, corresponding amplitude modulation, frequency modulation or phase modulation can be achieved by reasonably controlling the reflection coefficient Γ. Based on this, the BSC device can be a tag (i.e. Tag) in a traditional 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 Internet of Everything, in which the number of IoT devices will reach hundreds of billions. Its connection density will be 10-100 times higher than that of 5G, reaching a connection density of 10-100/m2. Massive IoT devices have great impact on cost and performance Huadu has presented new challenges. Cellular networking, low cost, low power consumption or even zero power consumption are the main trends in the development of IoT devices in the future. Limited by the transmission power of network nodes, two-way link attenuation, energy storage efficiency and energy storage capacity of the energy storage circuit, the receiving sensitivity of the BSC equipment, the gain of the transmitting and receiving antennas, and the influence of signal interference, the forward and reverse coverage of the BSC are faced with Big technical challenges.

At present, BSC systems can be divided into Monostatic Backscatter Communication Systems (MBCSs) and Bistatic Backscatter Communication Systems (BBCSs). Figure 4 shows a schematic diagram of the BSC system architecture. As shown in (a) of Figure 4, MBCSs (such as traditional radio frequency identification systems) include a BSC sending device 41 (such as Tag) and a reader (ie Reader) 42. The reader 42 contains an electromagnetic frequency (Radio Frequency, RF) radio frequency source and a BSC receiver. The RF radio frequency source is used to generate RF radio frequency signals to power the BSC transmitting device 41; the BSC transmitting device 41 passes through The modulated RF radio frequency signal, so that the BSC receiving end in the reader/writer 42 can perform signal demodulation after receiving the backscattered signal. Since the RF source and the BSC receiver are in the same device (such as the reader/writer 42), they are called MBCSs. In the MBCSs system, since the RF radio frequency signal sent from the BSC transmitting equipment will be attenuated by the round-trip signal, it will cause a double near-far effect, so the energy of the signal will be attenuated greatly, so the MBCSs system is generally used for short-distance transmission. BSC. As shown in (b) of Figure 4, unlike the MBCSs system, the RF radio frequency source 43, BSC transmitting device 44 and BSC receiving device 45 in BBCSs are separated, thereby avoiding the problem of large round-trip signal attenuation. In addition, by properly placing the RF source 43, the performance of BBCSs can be further improved. It should be noted that the environmental backscatter communication system is also a type of BBCSs, but the radio frequency source in the environmental backscatter communication system can be the radio frequency source in the available environment, for example, TV towers, cellular base stations, WiFi signals, Bluetooth Signal etc.

It can be seen that adopting BBCSs architecture is one of the effective ways to improve BSC coverage and can avoid the problem of two-way signal attenuation in MBCSs. By rationally placing RF sources and BSC receiving equipment, or even deploying RF sources dedicated to RF power supply, the transmission coverage of the BSC can be effectively improved. However, in BBCSs, since the received signal is a superposition of the useful backscattered signal and the direct link interference signal of the same frequency, and the intensity of the direct link interference signal may be much greater than the backscatter signal intensity, strong direct link interference Elimination is the technical prerequisite for improving speed, coverage, reliable transmission and large-scale connections in backscatter communications. And because the direct link interference may be a modulated signal, and the BSC receiving equipment usually does not know the modulation characteristics of the direct link signal, the challenge of direct link interference cancellation is greater. The same problem also exists in MBCSs. Self-interference cancellation.

In order to effectively eliminate strong direct link interference from radio frequency sources, researchers based on the time domain structural characteristics and frequency domain structural characteristics of the radio frequency carrier signal, combined with the backscattering baseband signal design, can enable the BSC receiving equipment to effectively eliminate strong direct link interference. Direct link interference. Considering that the radio frequency carrier signal is an Orthogonal Frequency Division Multiplexing (OFDM) signal waveform scenario widely used in LTE and NR systems, researchers based on the existence of cyclic prefix (Cyclic Prefix, CP) in the OFDM signal Due to the characteristics of the domain repetition structure, by jointly designing the differential baseband modulation signal in the BSC equipment, strong direct link interference can be effectively eliminated when the channel delay does not exceed the CP length. In addition to using the repetitive structure in the OFDM time domain, the guard bands in the OFDM frequency domain can also be used to eliminate interference, and the equivalent frequency of the baseband signal is moved to different guard bands for signal modulation. The same design idea can also be extended to unmodulated single sine wave RF signals, etc.

In interference cancellation, the BSC receiving equipment needs to be based on the minimum channel transmission delay of the direct link and the backscatter cascade link. with maximum delay extension to determine the decision threshold. in, Represents the discrete channel transmission delay from the RF source to the BSC receiving device, Represents the discrete channel transmission delay from the RF source to the BSC transmitting device and the BSC transmitting device to the BSC receiving device cascade channel, f _s represents the sampling rate of the signal; Indicates the channel delay expansion from the radio frequency source to the BSC receiving equipment, L _b =[(d _h1 +d _h2 +τ _h1 +τ _h2 )f _s ] represents the cascade from the radio frequency source to the BSC transmitting equipment and from the BSC transmitting equipment to the BSC receiving equipment. The channel delay spread of the channel. In addition, after obtaining the channel transmission delay and channel delay spread of each link, it can also be used to determine the frame structure of the radio frequency carrier or the symbol period of the baseband signal, etc.

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

(1) As shown in (a) in Figure 5, s(t) includes two time slot blocks with the same polarity and data, forming a basic time slot block (here, the time slot is only used as a time unit For example, not limited to time slots), the data length in each time slot is N, the cycle length is T _s , and it is random or non-random, where s(t) can be expressed as the following formula (2 ):

(2) Or, as shown in (b) in Figure 5, each two time slot blocks are distributed, with Q or other data units of duration T _a in between. At this time, s(t) can be expressed as The following formula (3):

Taking the radio frequency carrier signal with the time domain structure shown in (a) in Figure 5 as an example, in order to ensure the performance of eliminating interference, the carrier signal length N of the radio frequency carrier signal must satisfy: N+D>L;

in, is the minimum channel transmission delay of the direct link h ₃ and the backscatter cascade channel h _b = {h ₁ , h ₂ }, is the maximum delay spread of the direct link h ₃ and the backscatter cascade channel h _b = {h ₁ , h ₂ }.

For BSC transmitting equipment, the symbol period T _b of the BSC modulated signal and the period T _s of the carrier frequency signal are adjusted to satisfy: T _b = 2T _s ;

In addition, the BSC transmitting equipment uses Miller coding (actually it can be any BSC coding). Figure 6 shows a schematic diagram of the radio frequency carrier signal and the BSC baseband signal. As shown in Figure 6, if the transmitted bit B=0, then the baseband signal b (n) is: b(n)=1, n=0,...,2N-1; if the transmitted bit B=1, the baseband signal b(n) is:

For the BSC receiving equipment, the direct link interference signal y _d [n] and the backscattered signal y _b [n] will be received, that is, the received signal of the BSC receiving equipment is: y [n] = y _b [n] + y _d [n]+w[n]; where the direct link signal is:

Since the distance between the BSC transmitting equipment and the BSC receiving equipment is usually relatively short, without loss of generality, assuming that the channel h ₂ (t) is a single-path channel, expressed as h ₂ , then the backscattered signal at this time is:

Due to the repetitive structural characteristics of the radio frequency carrier signal s(n), the direct link interference signal y _d [n] satisfies:
y _d [n]=y _d [n+N], n=L _h1 -1,..., N+D _h1 -1;

Similarly, the backscattered signal y _b [n] satisfies:

If the transmitted bit B=0, then y _b [n]=y _b [n+N], n=L _h1 -1,..., N+D _h1 -1;

If the transmitted bit B=1, then y _b [n]=-y _b [n+N], n=L _h1 -1,..., N+D _h1 -1.

Then using the repetitive structural properties of y _d [n] and y _b [n], the following differential signal is constructed:

If the sending bit B=0, then z[n]=y[n]-y[n+N]=v[n], n=L-1,...,N+D-1;

If the sending bit B=1, then z[n]=y[n]-y[n+N]=u[n]+v[n], n=L-1,...,N+D-1;

Among them, y[n]=y _b [n]+y _d [n]+w[n] is the received signal of the BSC receiving equipment, v[n]=w[n]-w[n+N]. Therefore, the effective signal-to-noise ratio of the backscattered signal is: Among them, 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 direct link interference cancellation scheme, since the construction of the differential signal v[n]=w[n]-w[n+N] is obtained by the difference between two Gaussian signals, this leads to an increase in the average power of the noise. This causes noise to rise and thus reduces the effective signal-to-noise ratio. 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 send T (T>1) long A basic time slot block of degree N, thereby achieving the effect of noise smoothing.

The existing direct link interference elimination solution uses the repetitive structure of the radio frequency signal combined with the BSC baseband signal design to achieve demodulation of the BSC modulated signal under strong direct link interference. The principle is that the repeating structure of a radio frequency signal with a repeating structure is still maintained after passing through the channel. Therefore, the direct link interference can be eliminated by subtracting the two effective repeating structure signals that are maintained; and for useful backscattered signals item, after subtracting the signals of two valid repeating structures that have been maintained identically and differentially modulated by the BSC equipment, the demodulation of the BSC differential modulation signal without direct link interference can be achieved. However, since this scheme only interferes in the amplitude dimension, the demodulation performance of this scheme is strongly related to factors such as the difference between the length of the repetitive structure and the channel delay, and the number of repetitions of the repetitive structure. In addition, because this scheme uses Miller for encoding, its frequency band utilization is only 1/2 compared to OOK modulation, resulting in lower frequency band utilization. If the response is improved by increasing the length of the repeating structure or the number of repetitions of the repeating structure, The effective signal-to-noise ratio of directional scattering will further reduce the frequency band utilization of the system. Moreover, when determining the length or number of repeating structures in traditional solutions, it is necessary to first estimate the channel delay and then send training frames to estimate the effective signal-to-noise ratio. This results in long training delays and high training overhead.

In order to solve the above problem, in the frame structure determination method provided by the embodiment of the present application, the target device can configure and send target configuration information; the target configuration information is used by the first device to calculate the first parameter carried in the first signal, and the first signal is a signal generated based on the second signal and the third signal, the third signal is a baseband signal that modulates the second signal, the first parameter is a parameter of the third signal; and the target device can be based on the channel delay reported by the first device. Information and the first parameter, calculate the second parameter corresponding to each frame structure in P types of frame structures, P is a positive integer; and the target device can determine the method used for data transmission from the P types of frame structures based on the P second parameters. Target frame structure. Through this solution, 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 any arbitrary calculation based on the channel delay information and the first parameter reported by the first device. The second parameter of the frame structure is used to determine the optimal frame structure for data transmission. Therefore, there is no need to estimate the channel delay first, and then estimate the transmission performance of the frame structure with different repeating structure lengths multiple times to determine the optimal frame structure. Frame structure, thus saving system overhead.

The impact on the effective signal-to-noise ratio by increasing the length of the repeating structure or increasing the number of repeating structures is explained 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 bit B=0 is sent, then z ₀ [n]=y ₀ [n]-y ₀ [n+N]=v ₀ [n], n=L-1,...,N+D-1;

If bit B=1 is sent, then z ₀ [n]=y ₀ [n]-y ₀ [n+N]=u ₀ [n]+v ₀ [n], n=L-1,...,N+ D-1;

Among them, y ₀ [n]=y _b0 [n]+y _d0 [n]+w ₀ [n] is the received signal of the BSC receiving equipment;

and v ₀ [n]=w ₀ [n]-w ₀ [n+N].

Then, the effective signal-to-noise ratio of the backscattered signal is: The constructed statistical decision function is:

According to the derivation, the optimal decision threshold performance is: The bit error rate performance is: where ω is the probability of false detection.

Without loss of generality and for simplicity of expression, the 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 _0,e,min =f(γ ₀ ,N,D, L), where, when k=2, the optimal decision threshold and bit error rate performance are:

It can be seen from the above that (1) in the case of increasing the length of the repeating structure, if the length of the repeating structure is M and the number of repetitions is 1, the following differential signal can be constructed:

If bit B=0 is sent, then z ₁ [n]=y ₁ [n]-y ₁ [n+N]=v ₁ [n], n=L-1,...,M+D-1;

If the transmitted bit B=1, then 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 constructed statistical decision function is:

According to extrapolation, its optimal decision threshold and bit error rate performance are: P _{1, e, min} = f (γ ₁ , M, D, L);

Among them, when k=2, the optimal decision threshold and bit error rate performance are:

(2) In the case of increasing the number of repeating structures, if the length of each repeating structure is N, but P identical basic time slot blocks are repeatedly sent, the following differential signal can be constructed:

If bit B=0 is sent, then z ₂ [n]=y ₂ [n]-y ₂ [n+N]=v ₂ [n], n=L-1,..., N+D-1;

If bit B=1 is sent, then 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 P backscattered signals is:

The constructed statistical decision function is:

According to extrapolation, its optimal decision threshold and bit error rate performance are: P _{1, e, min} = f (γ ₂ , M, D, L);

It can be seen that the signal-to-noise ratio performance can be effectively improved by increasing the length of the repeating structure and the number of repeating structures, but the gains brought by these two methods are different in different channel environments.

Since the bit error rate performance ratio under the same number of repetitions 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, therefore for time-invariant channels, That is, for a channel where the minimum channel delay and maximum delay expansion of the channel remain unchanged within a period of time, if the signal-to-noise ratio and bit error rate under two different length repeating structures are known, the minimum channel delay D, The maximum delay is extended L and the signal-to-noise ratio and bit error rate performance under any repetition structure length E are derived. Similarly, the bit error rate performance under the same repeating structure length and different repeating structure times is a function related to the repeating structure repetition number 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 bit error rate under two different length repeating structures are known, the minimum channel delay D and the maximum delay spread L can be obtained, and the signal under any number of repeating structures F can be derived. noise ratio and bit error rate performance.

According to the above properties, the system only needs to know the signal-to-noise ratio and bit error rate performance under two different repeating structure lengths, and then it can derive the signal-to-noise ratio and error rate under any repeating structure length and/or number of repeating structures. Code rate performance and one step implementation This method performs channel delay estimation and signal-to-noise ratio estimation, which reduces the traditional step-by-step training process that requires estimating the delay first and then estimating the signal-to-noise ratio, and reduces system training overhead and training delay. At the same time, based on the derived signal-to-noise ratio and bit error rate performance under any repeating structure length and/or repeating structure number, the system end can also flexibly configure the radio frequency carrier signal period and backscattering according to the channel environment during the data transmission stage. The communication modulates the signal rate to increase the transmission rate of backscatter communication as much as possible while meeting the bit error rate performance of backscatter communication.

An embodiment of the present application provides a method for determining a frame structure. Figure 7 shows a flow chart of the method for determining a frame structure provided by an embodiment of the present application. As shown in Figure 7, the frame structure determination method provided by the embodiment of the present application may include the following steps 701 to 703.

Step 701: Configure the target device and send target configuration information.

In this embodiment of the present application, the target configuration information is used by the first device to calculate the first parameter carried in the first signal. The first signal is a signal generated based on the second signal and the third signal, and the third signal is the second signal. For the modulated baseband signal, the first parameter is the parameter of the third signal.

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

In the embodiment of this application, the first device is a 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: in addition to the first device, the second device and the third device. Network node device.

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

In the embodiment of the present application, since the target device may include a first device, a second device, a third device or a fourth device, the target configuration information may be configured by any of the devices, thereby improving the flexibility of configuring the target configuration information. sex.

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

First configuration information, the first configuration information is used to configure signal parameters of the first signal;

second configuration information, the second configuration information is used to configure signal parameters of the second signal;

third configuration information, the third configuration information is used to configure signal parameters of the third signal;

Fourth configuration information, the fourth configuration information is used to configure at least one of the following: a reporting method of channel delay information, a reporting time and frequency resource of channel delay information, a carrying method of channel delay information, a reporting method of the first parameter, The reporting time and frequency resources of the first parameter and the carrying mode of the first parameter.

In this 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 respond accordingly. Content configuration, thereby further improving the flexibility of configuring target configuration information.

Optionally, in this embodiment of the present application, 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.

Optionally, in this embodiment of the present application, 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.

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

Optionally, in this embodiment of the present application, the first signal may be a BSC reflection signal generated based on 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 can each include at least one of the type, length, time-frequency resource, etc. of the corresponding signal, the target configuration information can be enriched. configuration function.

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

In the embodiment of this application, the first target delay is: the sum of the first channel transmission delay and the second channel transmission delay, and the minimum channel transmission delay among the third channel transmission delay; the second target delay is : The sum of the first channel delay spread and the second channel delay spread, and the maximum channel delay spread among the third channel delay spread.

In the embodiment of this application, the first channel transmission delay and the first channel delay are expanded to: the channel delay between the second device and the third device; the second channel transmission delay and the second channel delay are expanded to: The channel delay between the first device and the third device; the third channel transmission delay and the third channel delay are expanded to: the channel delay between the first device and the second device.

Optionally, in the embodiment of this application, the target configuration information may be carried through any of the following: Radio Resource Control (Radio Resource Control, RRC), Medium Access Control Element (MAC-CE) , Downlink Control Information (DCI), Sidelink Control Information (SCI), and preamble sequence.

In the embodiment of the present application, since the target configuration information can be carried through RRC, MAC-CE, DCI, SCI or preamble sequence, 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 based on the second signal and the third signal, so that the first signal can carry the first parameter of the third signal.

Optionally, in this embodiment of the present application, the second signal may include: a first part, a second part, a third part and a fourth part. point.

In the embodiment of the present application, the first part and the second part meet the following requirements: both have a length of the first time unit and contain exactly the same data; the third part and the fourth part meet the requirements: both have a length of the second time unit and contain the same data. Parts are the same.

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

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

In the embodiment of the present application, since the second signal includes: the first part and the second part whose length is the first time unit and includes exactly the same data, and the second signal has the same length and includes the same data part The third part and the fourth part can therefore perform signal modulation based on the characteristics of the second signal to calculate the first parameter.

Step 702: The target device calculates the second parameter corresponding to each of the P frame structures based on the channel delay information and the first parameter reported by the first device.

Among them, P is a positive integer.

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

Optionally, in this embodiment of the present application, every two frame structures among the above-mentioned P types of frame structures satisfy the following requirements: the repeating structure lengths are different, and/or the number of repetitions is different.

In the embodiment of the present application, since the repeating structure lengths of the above P types of frame structures are different and/or the number of repetitions is different, the diversity of the calculated frame structures can be enriched to facilitate accurate selection of the optimal frame structure.

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

Step 703: The target device determines the target frame structure used for data transmission from P types of frame structures based on the P second parameters.

It can be understood that the target frame structure is the optimal frame structure adopted for data transmission.

For specific methods of calculating the second parameters corresponding to each of the above frame structures and determining the target frame structure, reference may be made to the specific descriptions in related technologies. To avoid duplication, they will not be described again here.

In the frame structure determination method provided by the embodiment of the present application, since the target device can configure and send the target configuration information used by the first device to calculate the first parameter carried in the first signal, and can be based on the channel timing reported by the first device, Delay information and the first parameter are used to calculate the second parameter of any frame structure and determine the optimal frame structure for data transmission. Therefore, there is no need to estimate the channel delay first and then estimate the transmission of frame structures with different repeating structure lengths multiple times. performance, the optimal frame structure can be determined, thereby saving system overhead.

An embodiment of the present application provides a method for determining a frame structure. Figure 8 shows a flow chart of the method for determining a frame structure provided by an embodiment of the present application. As shown in Figure 8, the frame structure determination method provided by the embodiment of the present application may include the following steps 801 to 804.

Step 801: The first device receives the first signal sent by the third device according to the first configuration information, and receives the 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 to configure the signal parameters of the first signal, and the second configuration information is used to configure the 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 signal parameters of the third signal.

In the embodiment of the present application, the first signal, the second signal and the third signal are all used to: obtain the first parameter, or obtain the above-mentioned channel delay information.

Optionally, in this embodiment of the present application, the third signal may be: a baseband signal used by the third device to perform target modulation on the second signal.

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

In the embodiment of the present application, since the third signal can be: a baseband signal used by the third device to perform amplitude differential modulation, phase differential modulation, or amplitude and phase differential modulation on the second signal, different third signals can be used. The second signal is modulated differently, thereby enriching the functionality of the third signal.

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

The third signal carries bit information through the amplitude difference value between the first half symbol period of the first symbol period and the second half symbol period of the first symbol period. The length of the first symbol period is the length of the first time unit. twice; 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;

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

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

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

Optionally, in this embodiment of the present application, the target modulation is the above-mentioned 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. The length of the first symbol period is the length of the first time unit. twice; 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;

And 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. The length of the second symbol period is the second time unit. twice; and if the bit information indicates the first value, the phase value of the third signal is the 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 the fourth phase value. Five phase values, the phase value of the second half symbol period of the third signal is the sixth phase value, and the fifth phase value and the sixth phase value are different from each other.

Optionally, in the embodiment of this 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 values between the first half symbol period of the first symbol period and the second half symbol period of the first symbol period. The length of the first symbol period is the first time twice the unit; and if the bit information indicates the first value, then 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, then 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, and 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 from each other, and the second phase value and the third phase value are different from each other;

And the third signal carries bit information through the amplitude and phase difference values of the first half symbol period of the second symbol period and the second half symbol period of the second symbol period. The length of the second symbol period is the second twice the time unit; and if the bit information indicates the first value, the amplitude value of the third signal is the fourth amplitude value, and the phase value of the third signal is the fourth phase value; if the bit information indicates the second value, Then the amplitude value of the first half symbol period of the third signal is the fifth amplitude value, the phase value of the first half symbol period of the third signal is the fifth phase value, and the amplitude value of the second half symbol period of the third signal is the sixth The amplitude value and the phase value of the second half symbol period of the third signal are the 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, since the third signal can have different characteristics when the target modulation is different, different target modulations of the second signal can be satisfied, thereby enriching the frame structure composition of the third signal.

Optionally, in this embodiment of the present application, the above step 802 can be specifically implemented through the following step 802a.

Step 802a: The first device demodulates the first signal according to the first configuration information and the third configuration information and according to the preset criteria to obtain data of the third signal.

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

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

For example, taking the first device to demodulate the first signal with a repeating structure length N according to the above-mentioned criteria based on the differential signal structure, the first device can demodulate the last part of the received signal based on the differential signal structure. The period of the signal is subtracted before Periodic signal, get the differential signal z[n]=y[n]-y[n+N], n=L-1,...,N+D-1, according to The time relationship and differential properties of

Where n=L-1,…,N+D-1. It can be seen from the above that due to the repetitive structure of the source signal and the differential structure of the BSC baseband signal, the direct link interference signal term is effectively eliminated.

In the embodiment of the present application, since the first device can demodulate the first signal according to at least one of the criteria based on the differential signal structure, the maximum likelihood detection criterion, and the minimum Euclidean distance criterion to obtain the data of the third signal, Therefore, the flexibility of the first device to demodulate the first signal can be improved.

Step 803: The first device calculates the first parameter of the third signal based on the data of the third signal.

Step 804: The first device obtains the channel delay information, and reports the channel delay information and the first parameter to the target device.

Optionally, in this embodiment of the present application, the above step 804 can be specifically implemented through the following step 804a or 804b.

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 this embodiment of the present application, after calculating the first parameter, the first device can calculate the above channel delay information through the 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 this embodiment of the present application, the first device can obtain the above-mentioned channel delay information according to the timestamp information carried in the first signal and the second signal respectively. The timestamp information is used to indicate the time of sending or receiving the corresponding signal. time.

In this embodiment of the present application, since the first device can obtain the channel delay information based on the first parameter or the first signal and the second signal, the flexibility of the first device in obtaining the channel delay information can be improved.

Optionally, in this embodiment of the present application, the above step 804 can be specifically implemented through the following step 804c.

Step 804c: The first device obtains the channel delay information, reports the channel delay information to the target device in the first reporting method according to the fourth configuration information, and reports the first parameters to the target device in the second reporting method.

In the embodiment of this application, the first reporting method and the second reporting method are different.

In the embodiment of this application, the fourth configuration information is used to configure at least one of the following: the reporting method of the above-mentioned channel delay information, the reporting time and frequency resources of the channel delay information, the carrying method of the channel delay information, and the first parameter The reporting method, the reporting time and frequency resources of the first parameter, and the carrying method of the first parameter.

In this embodiment of the present application, because the first device can report the above-mentioned channel delay information and the first parameter through different reporting methods according to the fourth configuration information, the flexibility of the first device in reporting data can be improved.

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

In the embodiment of this application, the first transmission delay is the channel transmission delay between the second device and the third device, and the first delay extension is the channel delay extension between the second device and the third device; the second The transmission delay is the channel transmission delay between the first device and the third device, the second delay extension is the channel delay extension between the first device and the third device, and the third transmission delay is the channel delay extension between the first device and the third device. The channel transmission delay between the second device and the third delay extension are the channel delay extension between the first device and the second device.

Optionally, in the embodiment of this application, the first reporting method includes any of the following:

(1.1) Report the first transmission delay, the first delay extension, the second transmission delay, the second delay extension, the third transmission delay, and the third delay extension respectively;

(1.2) Report the sum of the first transmission delay and the second transmission delay, the sum of the first delay extension and the second delay extension, the third transmission delay, and the third delay extension respectively;

(1.3) Report the sum of the first transmission delay and the second transmission delay, and the minimum transmission delay in the third transmission delay; and report the sum of the first delay extension and the second delay extension, and the third The maximum delay spread among delay spreads.

In this embodiment of the present application, since the first reporting method may include any of the above (1.1) to (1.3), the flexibility of the first device in reporting the above channel delay information can be improved.

Optionally, in this embodiment of the application, the first parameter includes any of the following: bit error rate, bit error rate, and signal-to-noise ratio; then, the second reporting method may include any of the following:

(2.1) Only report the first parameter of the first target signal;

(2.2) Only report the first parameter of the second target signal;

(2.3) Report the first parameter of the first target signal and the first parameter of the second target signal at the same time;

Wherein, the first target signal is: a third signal with a length of a first symbol period; and the second target signal is: a third signal with a length of a second symbol period.

In the embodiment of this application, since the first reporting method may include any of the above (2.1) to (2.3), it may be provided High flexibility for the first device to report the first parameter.

It should be noted that in actual implementation, the first device may only report the first parameter of the signal, and the target device calculates the above-mentioned channel delay information, so that the target device calculates the channel delay information and receives the first After the first parameters reported by the device, the second parameters corresponding to each of the P frame structures can be calculated, and based on the P second parameters, the target frame structure used for data transmission can be determined from the P frame structures.

For other descriptions in the embodiments of the present application and the effects that each technical feature can achieve, please refer to the relevant descriptions in the above embodiments. To avoid repetition, they will not be described again here.

In the frame structure determination method provided by the embodiment of the present application, 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 third signal based on the data of the third signal. The first parameter of the signal, and can report the obtained channel delay information and the calculated first parameter to the target device. Therefore, the target device no longer needs to estimate the channel delay information, and the target device can directly pass the channel. The delay information and the first parameter are used to determine the target frame structure, thereby saving system overhead.

An embodiment of the present application provides a method for determining a frame structure. Figure 9 shows a flow chart of the method for determining a frame structure provided by an embodiment of the present application. As shown in Figure 9, the frame structure determination method provided by 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 part, a second part, a third part and a fourth part.

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

Optionally, in this embodiment of the present application, the second signal may be: a signal that provides a radio frequency carrier for the third device.

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

For example, the second signal can satisfy the time domain structure as shown in Figure 10. It can be seen that the second signal s(n) includes two training frames, and training frame 1 includes two time slots with the same polarity and data. , the data length in each time slot is N, and the cycle length is And it is random; training frame 2 also includes two time slots with the same polarity and data (ie, the first time unit and the second time unit). The data length of each time slot is M and the cycle length is And it's random. The second signal s(n) can satisfy the following:

In the frame structure determination method provided by the embodiment of the present application, since the second device can send the second signal according to the second configuration information, and the first part and the second part of the second signal satisfy: the length is both the first time unit , and the data included are exactly the same; the third part and the fourth part in the second signal satisfy: the length is the second time unit, and the included data part is the same; and the length of the first time unit is the same as that of the second time unit. The lengths are different, so that after receiving the second signal, the first device can obtain 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, thereby saving system overhead. .

An embodiment of the present application provides a method for determining a frame structure. Figure 11 shows a flow chart of the method for determining a frame structure provided by an embodiment of the present application. As shown in Figure 11, the frame structure determination method provided by the embodiment of the present application may include the following steps 1101 to 1103.

Step 1101: The third device receives the second signal sent by the second device according to the second configuration information.

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

In the embodiment of the present application, the first part and the second part meet the following requirements: the length is the first time unit, and the data included is completely the same. The third part and the fourth part meet the following requirements: the length is the second time unit and the data part included is the same.

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

Step 1102: The third device modulates the second signal with the generated third signal according to the first configuration information and the third configuration information to obtain the first signal.

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

In the embodiment of the present application, the first signal, the second signal and the third signal are all used to: obtain the first parameter of the third signal, or obtain channel delay information.

And the third signal carries bit information through the amplitude difference value between the first half symbol period of the second symbol period and the second half symbol period of the second symbol period. The length of the second symbol period is the second time unit. twice; and if the bit information indicates the first value, the amplitude value of the third signal is the 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 the fourth amplitude value. Five amplitude values, the amplitude value of the second half symbol period of the third signal is the 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 target modulation is the above-mentioned phase differential modulation, and the modulation order is second order; then:

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

Step 1103: The third device sends the first signal according to the first configuration information.

In the frame structure determination method provided by the embodiment of the present application, since the third device can modulate the received second signal with the generated third signal according to the configuration information, obtain the first signal, and send the first signal, it is possible to make the third device After receiving the first signal, a device can obtain channel delay information and first parameters based on the first signal, so that the target device can further determine the target frame structure, thereby saving system overhead.

For example, after the target device calculates the second parameters corresponding to each of the P frame structures based on the channel delay information and the first parameters reported by the first device, the target device can calculate from The target frame structure used for data transmission is determined in the P frame structure; Figures 12 to 15 show schematic diagrams of the radio frequency carrier signal and the baseband signal during the data transmission stage.

Considering that the length of the repetitive structure is E and the number of repetitions is 1, the frame structure meets the bit error rate performance under this condition. The radio frequency carrier signal and baseband signal as shown in Figure 12 can be used. This frame structure design can improve the frequency band utilization and reduce the Communication delay, and due to the large length of one repetition structure, it is suitable for communication scenarios with large channel delay or channel delay expansion; however, the disadvantage of this design is that if the radio frequency carrier signal itself sent by the radio frequency source is used to Used for communication with other communication node equipment, which may affect the frequency band utilization and communication delay of the existing communication system;

Also consider that the length of the repeating structure is E and the number of repetitions is 1. The frame structure meets the bit error rate performance under this condition. The radio frequency carrier signal and the baseband signal as shown in Figure 13 can be used. Since the repeating structure length of the frame structure is the same, Therefore, the bit error rate performance is the same, and it is also suitable for scenarios with large communication delays. And there is a frame structure used for other communication functions between the two repeated structures of the radio frequency carrier signal in this frame structure, which can reduce the frequency band utilization and communication delay of the original communication system; but the disadvantage is that it reduces the BSC system The frequency band utilization rate and the communication delay of the BSC system are improved;

Considering that the length of the repeating structure is N and the number of repetitions is P, the frame structure meets the bit error rate performance under this condition. The radio frequency carrier signal and baseband signal can be used as shown in Figure 14. The advantage of this frame structure design is that the radio frequency carrier signal and baseband The signal has a short period and has high requirements for synchronization. It can be applied to scenarios where channel delay or channel delay is small, or scenarios where the signal-to-noise ratio is small;

Also consider that the frame structure with a repeating structure length of N and a repetition number of P satisfies the bit error rate performance under this condition. The radio frequency carrier signal and the baseband signal can be used as shown in Figure 15. Since the repeating structure length of the frame structure is the same, so The bit error rate performance is the same, and it is also suitable for scenarios with small communication delays. And there is a frame structure used for other communication functions between the two repeated structures of the radio frequency carrier signal in this frame structure, which can reduce the frequency band utilization and communication delay of the original communication system; but the disadvantage is that it reduces the reverse The frequency band utilization of the scattering communication system and the communication delay of the backscattering communication system are improved.

For the frame structure determination method provided by the embodiment of the present application, the execution subject may be a frame structure determination device. In the embodiment of the present application, the frame structure determination method performed by the frame structure determination apparatus is used as an example to illustrate the frame structure determination apparatus provided by the embodiment of the present application.

16 , the embodiment of the present application provides a frame structure determination device 160. The frame structure determination device 160 may include a configuration module 161, a calculation module 162, and a determination module 163. The configuration module 161 can be used to configure and send target configuration information; the target configuration information is used by the first device to calculate the first parameter carried in the first signal. The first signal is a signal generated based on the second signal and the third signal. The third signal is a baseband signal that modulates the second signal, and the first parameter is the parameter of the third signal. The calculation module 162 may be configured to calculate the second parameter corresponding to each of P frame structures according to the channel delay information and the first parameter reported by the first device, where P is a positive integer. The determination module 163 may be configured to determine a target frame structure adopted for data transmission from P types of frame structures based on the P second parameters calculated by the calculation module 162 .

In a possible implementation, the target device may include any of the following: a first device, a second device, a third device, and a fourth device; wherein the first device is a BSC receiving device and the second device is a radio frequency source device. , the third device is the BSC sending device, and the fourth device is: a network node device other than the first device, the second device and the third device.

In a possible implementation, the second signal may include: a first part, a second part, a third part and a fourth part. Among them, the first part and the second part satisfy: the length is the first time unit, and the included data is exactly the same; the third part and the fourth part satisfy: the length is the second time unit, and the included data part is the same; The length of one time unit is different from the length of the second time unit; both the first time unit and the second time unit are any of the following: symbols, time slots, subframes, and frames.

In a possible implementation, the above channel delay information can be used to indicate the first target delay and the second target delay; the first target delay is: the first channel transmission delay and the second channel transmission delay. and, and the minimum channel transmission delay in the third channel transmission delay; the second target delay is: the sum of the first channel delay extension and the second channel delay extension, and the third channel delay extension The maximum channel delay spread in . Wherein, the first channel transmission delay and the first channel delay are expanded to: the channel delay between the second device and the third device; the second channel transmission delay and the second channel delay are expanded to: the first device and The channel delay between the third device; the third channel transmission delay and the third channel delay are expanded to: the channel delay between the first device and the second device.

In a possible implementation manner, each of the two frame structures among the above P types of frame structures may satisfy the following requirements: the repeating structure lengths are different, and/or the number of repetitions is different.

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

In a possible implementation, the target configuration information may include at least one of the following: first configuration information, the first configuration information is used to configure signal parameters of the first signal; second configuration information, the second configuration information is used to configure the third signal. The signal parameters of the second signal; the third configuration information, the third configuration information is used to configure the signal parameters of the third signal; the fourth configuration information, the fourth configuration information is used to configure at least one of the following: the reporting method of the above channel delay information , the reporting time and frequency resources of the channel delay information, the carrying mode of the channel delay information, the reporting mode of the first parameter, the reporting time and frequency resources of the first parameter, and the carrying mode of the first parameter.

In a possible implementation, the signal parameters of the first signal may include at least one of the following: a reflection coefficient of the first signal, a type of the first signal, a length of the first signal, and a time-frequency resource of the first signal; and/ Or, 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; and/or the signal parameters of the third signal may include at least one of the following. Items: 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 can be carried through any of the following: RRC, MAC-CE, DCI, SCI, and preamble sequence.

In the frame structure determination device provided by the embodiment of the present application, the frame structure determination device can configure and send target configuration information for the first device to calculate the first parameter carried in the first signal, and can report based on the first device. The channel delay information and the first parameter are used to calculate the second parameter of any frame structure and determine the optimal frame structure for data transmission. Therefore, there is no need to estimate the channel delay first and then estimate frames with different repeating structure lengths multiple times. Based on the transmission performance of the structure, the optimal frame structure can be determined, thereby saving system overhead.

The frame structure determining device in the embodiment of the present application may be an electronic device, such as an electronic device with an operating system, or may be a component in the electronic device, such as an integrated circuit or chip. The electronic device may be a terminal or other devices other than the terminal. For example, terminals may include but are not limited to the types of terminals 11 listed above, and other devices may be servers, network attached storage (Network Attached Storage, NAS), etc., which are not specifically limited in the embodiment of this application.

The frame structure determination apparatus provided by the embodiments of the present application can implement each process implemented by the target device side method embodiment, and achieve the same technical effect. To avoid duplication, the details will not be described here.

17 , the embodiment of the present application provides a frame structure determination device 170. The frame structure determination device 170 may include a receiving module 171, a demodulation module 172, a calculation module 173, and a processing module 174. The receiving module 171 may be configured to receive a first signal sent by a third device according to the first configuration information, and receive a second signal sent by a second device according to the second configuration information. The demodulation module 172 may be used to demodulate the first signal according to the first configuration information and the third configuration information to obtain the data of the third signal. The calculation module 173 may be used to calculate the first parameter of the third signal based on the data of the third signal demodulated by the demodulation module 172 . The processing module 174 may be used to obtain channel delay information, and report the channel delay information and the first parameter to the target device. The first configuration information is used to configure the signal parameters of the first signal, the second configuration information is used to configure the signal parameters of the second signal, and the third configuration information is used to configure the signal parameters of the third signal; the first signal, the second signal Both the signal and the third signal are used to obtain the first parameter or obtain channel delay information.

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

In a possible implementation, the third signal is: a baseband signal used by the third device to perform target modulation on the second signal; wherein the target modulation is any of the following: amplitude differential modulation, phase differential modulation, amplitude sum Phase differential modulation.

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

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

In a 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 values between the first half symbol period of the first symbol period and the second half symbol period of the first symbol period. The length of the first symbol period is the first time twice the unit; and if the bit information indicates the first value, then 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, then the third The amplitude value of the first half symbol period of the signal is the second amplitude value, the phase value of the first half symbol period of the third signal is the second phase value, and 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 from each other, and the second phase value and the third phase value are different from each other. And the third signal carries bit information through the amplitude and phase difference values of the first half symbol period of the second symbol period and the second half symbol period of the second symbol period. The length of the second symbol period is the second twice the time unit; and if the bit information indicates the first value, the amplitude value of the third signal is the fourth amplitude value, and the phase value of the third signal is the fourth phase value; if the bit information indicates the second value, then the The amplitude value of the first half symbol period of the third signal is the fifth amplitude value, the phase value of the first half symbol period of the third signal is the fifth phase value, and the amplitude value of the second half symbol period of the third signal is the sixth amplitude value. , the phase value of the second half symbol period of the third signal is the 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, the first time unit and the second time unit may both be any of the following: symbols, time slots, subframes, and 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 a possible implementation, the processing module 174 may be configured to obtain the channel delay information based on the first parameter; or obtain the channel delay information based on the first signal and the second signal.

In a possible implementation, the processing module 174 may be configured to report the above-mentioned channel delay information to the target device in a first reporting manner according to the fourth configuration information, and report the first parameters to the target device in a second reporting manner. For the target device, the first reporting method and the second reporting method are different. The fourth configuration information is used to configure at least one of the following: a reporting method of the channel delay information, a reporting time and frequency resource of the channel delay information, a carrying method of the channel delay information, a reporting method of the first parameter, The reporting time and frequency resources of the first parameter and the carrying mode of the first parameter.

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

In a possible implementation, the first reporting method may include any of the following: reporting the first transmission delay, the first delay extension, the second transmission delay, the second delay extension, and the third transmission delay respectively. , the third delay extension; respectively report the sum of the first transmission delay and the second transmission delay, the sum of the first delay extension and the second delay extension, the third transmission delay, and the third delay extension; report The sum of the first transmission delay and the second transmission delay is equal to the minimum transmission delay in the third transmission delay, and the sum of the first delay extension and the second delay extension is reported, which is the same as the third delay extension. The maximum delay expansion.

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

In the frame structure determination device provided by the embodiment of the present application, the frame structure determination device can demodulate the received first signal according to the configuration information to obtain the data of the third signal, and can calculate based on the data of the third signal The first parameter of the third signal, and the acquired channel delay information and the calculated first parameter can be reported to the target device. Therefore, the target device no longer needs to estimate the channel delay information, and the target device can directly pass The channel delay information and the first parameter determine the target frame structure, thereby saving system overhead.

The frame structure determining device in the embodiment of the present application may be an electronic device, such as an electronic device with an operating system, or it may Is a component in an electronic device, such as an integrated circuit or chip. The electronic device may be a terminal or other devices other than the terminal. For example, terminals may include but are not limited to the types of terminals 11 listed above, and other devices may be servers, network attached storage (Network Attached Storage, NAS), etc., which are not specifically limited in the embodiment of this application.

The frame structure determination device provided by the embodiment of the present application can implement each process implemented by the first device-side method embodiment and achieve the same technical effect. To avoid duplication, the details will not be described here.

With reference to FIG. 18 , this embodiment of the present application provides a frame structure determination device 180 , which may include a sending module 181 . The sending module 181 may be configured to send the second signal according to the second configuration information, and the second configuration information is used to configure signal parameters of the second signal. Among them, the second signal includes: the first part, the second part, the third part and the fourth part; the first part and the second part meet the following requirements: the length is the first time unit and the data included is exactly the same; the third part and The fourth part satisfies: the lengths are all the second time unit and include the same data part; the length of the first time unit is different from the length of the second time unit.

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

In a possible implementation, 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 a possible implementation, the second signal may be: a signal that provides a radio frequency carrier for the third device.

In the frame structure determining device provided by the embodiment of the present application, the frame structure determining device can send the second signal according to the second configuration information, and the first part and the second part in the second signal satisfy: the length is both the first time unit, and the data included are exactly the same; the third part and the fourth part in the second signal satisfy: the length is the second time unit, and the data part included is the same; and the length of the first time unit is the same as the second time unit. The lengths of the units are different, so that after the first device receives the second signal, it can obtain 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, thereby saving the system s expenses.

The frame structure determination device provided by the embodiment of the present application can implement each process implemented by the second device-side method embodiment and achieve the same technical effect. To avoid duplication, the details will not be described here.

19 , the embodiment of the present application provides a frame structure determination device 190. The frame structure determination device 190 may include a receiving module 191, a modulation module 192 and a sending module 193. The receiving module 191 may be configured to receive the second signal sent by the second device according to the second configuration information. The modulation module 192 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 sending module 193 may be configured to send the first signal according to the first configuration information. The first configuration information is used to configure the signal parameters of the first signal, the second configuration information is used to configure the signal parameters of the second signal, and the third configuration information is used to configure the signal parameters of the third signal; the first signal, the second signal Both the signal and the third signal are used to: obtain the first parameter of the third signal, or obtain channel delay information.

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

In a possible implementation, the target modulation is 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. The length of the first symbol period is the length of the first time unit. twice; 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. And 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. The length of the second symbol period is the second time unit. twice; and if the bit information indicates the first value, the phase value of the third signal is the 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 the fifth phase value, the phase value of the second half symbol period of the third signal is the sixth phase value, and the fifth phase value and the sixth phase value are different from each other.

In the frame structure determination device provided by the embodiment of the present application, since the frame structure determination device can modulate the received second signal with the generated third signal according to the configuration information, obtain the first signal, and send the first signal, it can After the first device receives the first signal, the channel delay information and the first parameter can be obtained based on the first signal, so that the target device can further determine the target frame structure, thereby saving system overhead.

The frame structure determination device provided by the embodiment of the present application can implement each process implemented by the third device-side method embodiment and achieve the same technical effect. To avoid duplication, the details will not be described here.

Optionally, as shown in Figure 20, this embodiment of the present application also provides a communication device 2000, which includes a processor 2001 and a memory 2002. The memory 2002 stores programs or instructions that can be run on the processor 2001, such as , when the communication device 2000 is the above-mentioned first device, when the program or instruction is executed by the processor 2001, each process of the first device-side method embodiment is implemented, and the same technical effect can be achieved. When the communication device 2000 is the above-mentioned second device, when the program or instruction is executed by the processor 2001, each process of the second device-side method embodiment is implemented, and the same technical effect can be achieved. When the communication device 2000 is the above-mentioned third device, when the program or instruction is executed by the processor 2001, each process of the third device-side method embodiment is implemented, and the same technical effect can be achieved. When the communication device 2000 is the above-mentioned target device, when the program or instruction is executed by the processor 2001, each process of the method embodiment on the target device side is implemented, and the same technical effect can be achieved. To avoid duplication, the details are not repeated here.

Embodiments of the present application also provide a communication device, including a processor and a communication interface. The processor is used to configure and send target configuration information; the target configuration information is used by the first device to calculate the first parameter carried in the first signal. The first signal is a signal generated according to the second signal and the third signal, the third signal is a baseband signal that modulates the second signal, and the first parameter is a parameter of the third signal; and according to the channel delay information reported by the first device and the One parameter, calculate the second parameter corresponding to each frame structure in P types of frame structures, P is a positive integer; and determine the target frame structure used for data transmission from the P types of frame structures based on P second parameters; or,

The communication interface is used to receive the first signal sent by the third device according to the first configuration information, and to receive the first signal according to the second configuration information. Receive the second signal sent by the second device; the first device demodulates the first signal according to the first configuration information and the third configuration information to obtain the data of the third signal; the processor is used to calculate based on the data of the third signal the first parameter of the third signal; and obtain the channel delay information, and report the channel delay information and the first parameter to the target device; wherein the first configuration information is used to configure the signal parameters of the first signal, and the second configuration information Used to configure the signal parameters of the second signal, the third configuration information is used to configure the signal parameters of the third signal; the first signal, the second signal and the third signal are all used to: obtain the first parameter, or obtain channel delay information ;or,

The communication interface is used to send a second signal according to the second configuration information, and the second configuration information is used to configure signal parameters of the second signal; wherein the second signal includes: a first part, a second part, a third part and a fourth part. part; the first part and the second part satisfy: the length is the first time unit, and the included data are exactly the same; the third part and the fourth part satisfy: the length is the second time unit, and the included data part is the same; The length of one time unit is different from the length of the second time unit; or,

The communication interface is configured to receive a second signal sent by the second device according to the second configuration information; the processor is 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 communication interface is also used to send a first signal according to the first configuration information; wherein the first configuration information is used to configure the signal parameters of the first signal, the second configuration information is used to configure the signal parameters of the second signal, and the third configuration information Used to configure the signal parameters of the third signal; the first signal, the second signal and the third signal are all used to: obtain the first parameter of the third signal, or obtain channel delay information.

This communication device embodiment corresponds to the above-mentioned frame structure determination method embodiment. Each implementation process and implementation manner of the above-mentioned frame structure determination method embodiment can be applied to this communication device embodiment, and can achieve the same technical effect. Specifically, the communication device may be a terminal, or may be a network-side device; taking the communication device as a terminal as an example, FIG. 21 is a schematic diagram of the hardware structure of the terminal.

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

Those skilled in the art can understand that the terminal 1000 may also include a power supply (such as a battery) that supplies power to various components. The power supply may be logically connected to the processor 1010 through a power management system, thereby managing charging, discharging, and power consumption through the power management system. Management and other functions. The terminal structure shown in FIG. 21 does not limit the terminal. The terminal may include more or fewer components than shown in the figure, or some components may be combined or arranged differently, which will not be described again here.

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. The graphics processor 10041 is responsible for the image capture device (GPU) in the video capture mode or the image capture mode. Process the image data of still pictures or videos obtained by cameras (such as cameras). The display unit 1006 may include a display panel 10061, which 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 . Touch panel 10071, also known as touch screen. The touch panel 10071 may include two parts: a touch detection device and a touch controller. Other input devices 10072 may include but are not limited to physical keyboards, function keys (such as volume control keys, switch keys, etc.), trackballs, mice, and joysticks, which will not be described again here.

In this embodiment of the present application, after receiving downlink data from the network side device, the radio frequency unit 1001 can transmit it to the processor 1010 for processing; in addition, the radio frequency unit 1001 can send uplink data to the network side device. Generally, 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, etc.

Memory 1009 may be used to store software programs or instructions as well as various data. The memory 1009 may mainly include a first storage area for storing programs or instructions and a second storage area for storing data, wherein the first storage area may store an operating system, an application program or instructions required for at least one function (such as a sound playback function, Image playback function, etc.) etc. Additionally, memory 1009 may include volatile memory or nonvolatile memory, or memory 1009 may include both volatile and nonvolatile memory. Among them, non-volatile memory can be read-only memory (Read-Only Memory, ROM), programmable read-only memory (Programmable ROM, PROM), erasable programmable read-only memory (Erasable PROM, EPROM), electrically removable memory. Erase programmable read-only memory (Electrically EPROM, EEPROM) or flash memory. Volatile memory can be random access memory (Random Access Memory, RAM), static random access memory (Static RAM, SRAM), dynamic random access memory (Dynamic RAM, DRAM), synchronous dynamic random access memory (Synchronous DRAM, SDRAM), double data rate synchronous dynamic random access memory (Double Data Rate SDRAM, DDRSDRAM), enhanced synchronous dynamic random access memory (Enhanced SDRAM, ESDRAM), synchronous link dynamic random access memory (Synch link DRAM) , SLDRAM) and direct memory bus random access memory (Direct Rambus RAM, DRRAM). The memory 1009 in the embodiment 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 and a modem processor, where the application processor mainly handles operations related to the operating system, user interface, application programs, etc., Modem processors mainly process wireless communication signals, such as baseband processors. It can be understood that the above modem processor may not be integrated into the processor 1010.

Taking the terminal 1000 as the above target device as an example, the processor 1010 can be used to configure and send target configuration information; The target configuration information is used by the first device to calculate the first parameter carried in the first signal. The first signal is a signal generated according to the second signal and the third signal. The third signal is a baseband signal that modulates the second signal. One parameter is a parameter of the third signal; and can be used to calculate the second parameter corresponding to each of P frame structures based on the channel delay information reported by the first device and the first parameter, where P is a positive integer; and It can be used to determine the target frame structure used for data transmission from P types of frame structures based on the calculated P second parameters.

In a possible implementation, the above channel delay information can be used to indicate the first target delay and the second target delay; the first target delay is: the first channel transmission delay and the second channel transmission delay. sum, and the minimum channel transmission delay in the third channel transmission delay; the second target delay is: the sum of the first channel delay extension and the second channel delay extension, and the maximum in the third channel delay extension Channel delay spread. Wherein, the first channel transmission delay and the first channel delay are expanded to: the channel delay between the second device and the third device; the second channel transmission delay and the second channel delay are expanded to: the first device and The channel delay between the third device; the third channel transmission delay and the third channel delay are expanded to: the channel delay between the first device and the second device.

In the terminal provided by the embodiment of the present application, the terminal can configure and send target configuration information for the first device to calculate the first parameter carried in the first signal, and can be based on the channel delay information reported by the first device and The first parameter calculates the second parameter of any frame structure and determines the optimal frame structure for data transmission. Therefore, there is no need to estimate the channel delay first and then estimate the transmission performance of frame structures with different repeating structure lengths multiple times, which is convenient. The optimal frame structure can be determined, thereby saving system overhead.

The terminal provided by the embodiments of this application can implement each process implemented by the target device side method embodiment and achieve the same technical effect. To avoid duplication, details will not be described here.

Taking the terminal 1000 as the above-mentioned first device as an example, the radio frequency unit 1001 may be configured to receive the first signal sent by the third device according to the first configuration information, and receive the third signal sent by the second device according to the second configuration information. Two signals. The processor 1010 may be configured to demodulate the first signal according to the first configuration information and the third configuration information to obtain the data of the third signal; and may be configured to calculate the third signal based on the data of the third signal obtained through demodulation. The first parameter of the three signals; and can be used to obtain channel delay information, and report the channel delay information and the first parameter to the target device. The first configuration information is used to configure the signal parameters of the first signal, the second configuration information is used to configure the signal parameters of the second signal, and the third configuration information is used to configure the signal parameters of the third signal; the first signal, the second signal Both the signal and the third signal are used to obtain the first parameter or obtain channel delay information.

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

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

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

In a possible implementation, the processor 1010 may be configured to report the above-mentioned channel delay information to the target device in a first reporting manner according to the fourth configuration information, and report the first parameters to the target device in a second reporting manner. For the target device, the first reporting method and the second reporting method are different. The fourth configuration information is used to configure at least one of the following: a reporting method of the channel delay information, a reporting time and frequency resource of the channel delay information, a carrying method of the channel delay information, a reporting method of the first parameter, The reporting time and frequency resources of the first parameter and the carrying mode of the first parameter.

In a possible implementation, the first parameter may include any of the following: bit error rate, bit error rate, and signal-to-noise ratio. Second up The reporting method includes any 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 second target signal. One parameter. Wherein, the first target signal is: a third signal with a length of a first symbol period; and the second target signal is: a third signal with a length of a second symbol period.

In the terminal provided by the embodiment of the present application, 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 value of the third signal based on the data of the third signal. parameters, and can report the obtained channel delay information and the calculated first parameter to the target device, so that the target device no longer needs to estimate the channel delay information, and the target device can directly use the channel delay information and The first parameter determines the target frame structure, thereby saving system overhead.

The terminal provided by the embodiment of this application can implement each process implemented by the first device-side method embodiment and achieve the same technical effect. To avoid duplication, the details will not be described here.

Taking the terminal 1000 as the above-mentioned second device as an example, the radio frequency unit 1001 can be used to send the second signal according to the second configuration information, and the second configuration information is used to configure the signal parameters of the second signal. Among them, the second signal includes: the first part, the second part, the third part and the fourth part; the first part and the second part meet the following requirements: the length is the first time unit and the data included is exactly the same; the third part and The fourth part satisfies: the lengths are all the second time unit and include the same data part; the length of the first time unit is different from the length of the second time unit.

In the terminal provided by the embodiment of the present application, the terminal can send the second signal according to the second configuration information, and the first part and the second part of the second signal satisfy: the length is both the first time unit, and includes The data are exactly the same; the third part and the fourth part in the second signal meet the following requirements: the length is the second time unit and the data part included is the same; and the length of the first time unit is different from the length of the second time unit, so After receiving the second signal, the first device can obtain 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, thereby saving system overhead.

The terminal provided by the embodiment of the present application can implement each process implemented by the second device-side method embodiment and achieve the same technical effect. To avoid duplication, the details will not be described here.

Taking the terminal 1000 as the above-mentioned third device as an example, the radio frequency unit 1001 may be configured to receive the second signal sent by the second device according to the second configuration information. 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 also be configured to send the first signal according to the first configuration information. The first configuration information is used to configure the signal parameters of the first signal, the second configuration information is used to configure the signal parameters of the second signal, and the third configuration information is used to configure the signal parameters of the third signal; the first signal, the second signal Both the signal and the third signal are used to: obtain the first parameter of the third signal, or obtain channel delay information.

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

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

It should be noted that in actual implementation, when the terminal 1000 is the above-mentioned third device, the radio frequency unit 1001 in the terminal 1000 is actually an antenna unit.

The terminal provided by the embodiment of this application can implement each process implemented by the third device-side method embodiment and achieve the same technical effect. To avoid duplication, the details will not be described here.

Taking the above communication device as a network-side device as an example, FIG. 22 is a schematic diagram of the hardware structure of the network-side device. As shown in Figure 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 the radio frequency device 222. In the uplink direction, the radio frequency device 222 receives information through the antenna 221 and sends the received information to the baseband device 223 for processing. In the downlink direction, the baseband device 223 processes the information to be sent and sends it to the radio frequency device 222. The radio frequency device 222 processes the received information and then sends it out through the antenna 221.

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

The baseband device 223 may include, for example, at least one baseband board on which multiple chips are disposed, as shown in FIG. 22 . One of the chips is, for example, a baseband processor, which is connected to the memory 225 through a bus interface to call the memory 225 . Program to perform the network device operations shown in the above method embodiments.

The network side device may also include a network interface 226, which is, for example, a common public radio interface (CPRI).

Specifically, the network side device 2200 in the embodiment of the present application also includes: instructions or programs stored in the memory 225 and executable on the processor 224. The processor 224 calls the instructions or programs in the memory 225 to execute Figures 16 to 19 The execution methods of each module are shown and achieve the same technical effect. To avoid repetition, they will not be described in detail here.

Taking the network side device 2200 as the above-mentioned target device as an example, the processor 224 can be used to configure and send target configuration information; the target configuration information is used by the first device to calculate the first parameter carried in the first signal. is a signal generated according to the second signal and the third signal, the third signal is a baseband signal that modulates the second signal, and the first parameter is a parameter of the third signal; And it can be used to calculate the second parameter corresponding to each frame structure in P types of frame structures based on the channel delay information and the first parameter reported by the first device, where P is a positive integer; and can be used to calculate the P frame structures based on the calculation. The second parameter determines the target frame structure used for data transmission from P types of frame structures.

In the network side device provided by the embodiment of the present application, the network side device can configure and send target configuration information for the first device to calculate the first parameter carried in the first signal, and can be based on the channel reported by the first device. Delay information and the first parameter, calculate the second parameter of any frame structure, and determine the optimal frame structure used for data transmission. Therefore, there is no need to estimate the channel delay first, and then estimate the frame structure of different repeated structure lengths multiple times. According to the transmission performance, the optimal frame structure can be determined, thereby saving system overhead.

The network-side device 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. To avoid duplication, the details will not be described here.

Taking the network side device 2200 as the above-mentioned first device as an example, the radio frequency device 222 can be used to receive the first signal sent by the third device according to the first configuration information, and receive the first signal sent by the second device according to the second configuration information. the second signal. The processor 224 may be configured to demodulate the first signal according to the first configuration information and the third configuration information to obtain the data of the third signal; and may be configured to calculate the third signal based on the data of the third signal obtained through demodulation. The first parameter of the three signals; and can be used to obtain channel delay information, and report the channel delay information and the first parameter to the target device. The first configuration information is used to configure the signal parameters of the first signal, the second configuration information is used to configure the signal parameters of the second signal, and the third configuration information is used to configure the signal parameters of the third signal; the first signal, the second signal Both the signal and the third signal are used to obtain the first parameter or obtain channel delay information.

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

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

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

In a possible implementation, the processor 224 may be configured to report the above channel delay information to the target device in a first reporting manner according to the fourth configuration information, and report the first parameters to the target device in a second reporting manner. For the target device, the first reporting method and the second reporting method are different. The fourth configuration information is used to configure at least one of the following: a reporting method of the channel delay information, a reporting time and frequency resource of the channel delay information, a carrying method of the channel delay information, a reporting method of the first parameter, The reporting time and frequency resources of the first parameter and the carrying mode of the first parameter.

In a possible implementation, the first parameter may include any of the following: bit error rate, bit error rate, and signal-to-noise ratio. The second reporting method includes any 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 second target signal. the first parameter. Among them, the first target signal is: The third signal has a length of the first symbol period; the second target signal is: a third signal with a length of the second symbol period.

In the network side device provided by the embodiment of the present application, the network side device can demodulate the received first signal according to the configuration information to obtain the data of the third signal, and can calculate the third signal based on the data of the third signal. The first parameter of the signal, and can report the obtained channel delay information and the calculated first parameter to the target device. Therefore, the target device no longer needs to estimate the channel delay information, and the target device can directly pass the channel. The delay information and the first parameter are used to determine the target frame structure, thereby saving system overhead.

The network side device provided by the embodiment of the present application can implement each process implemented by the first device side method embodiment and achieve the same technical effect. To avoid duplication, the details will not be described here.

Taking the network side device 2200 as the above-mentioned second device as an example, the radio frequency device 222 can be used to send the second signal according to the second configuration information, and the second configuration information is used to configure the signal parameters of the second signal. Among them, the second signal includes: the first part, the second part, the third part and the fourth part; the first part and the second part meet the following requirements: the length is the first time unit and the data included is exactly the same; the third part and The fourth part satisfies: the lengths are all the second time unit and include the same data part; the length of the first time unit is different from the length of the second time unit.

In the network side device provided by the embodiment of the present application, the network side device can send the second signal according to the second configuration information, and the first part and the second part of the second signal satisfy: the length is both the first time unit , and the data included are exactly the same; the third part and the fourth part in the second signal satisfy: the length is the second time unit, and the included data part is the same; and the length of the first time unit is the same as that of the second time unit. The lengths are different, so that after receiving the second signal, the first device can obtain 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, thereby saving system overhead. .

The network side device provided by the embodiment of the present application can implement each process implemented by the second device side method embodiment and achieve the same technical effect. To avoid duplication, the details will not be described here.

Taking the network side device 2200 as the above-mentioned third device as an example, the radio frequency device 222 may be configured to receive the second signal sent by the second device according to the second configuration information. 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 also be used to send the first signal according to the first configuration information. The first configuration information is used to configure the signal parameters of the first signal, the second configuration information is used to configure the signal parameters of the second signal, and the third configuration information is used to configure the signal parameters of the third signal; the first signal, the second signal Both the signal and the third signal are used to: obtain the first parameter of the third signal, or obtain channel delay information.

In the network side device provided by the embodiment of the present application, since the network side device can modulate the received second signal with the generated third signal according to the configuration information, obtain the first signal, and send the first signal, it is possible to make the third signal After receiving the first signal, a device can obtain channel delay information and first parameters based on the first signal, so that the target device can further determine the target frame structure, thereby saving system overhead.

The network side device provided by the embodiment of the present application can implement each process implemented by the third device side method embodiment and achieve the same technical effect. To avoid duplication, the details will not be described here.

Embodiments of the present application also provide a readable storage medium, which stores a program or instructions. When the program or instructions are executed by a processor, each process of the above frame structure determination method embodiment is implemented, and can achieve The same technical effects are not repeated here to avoid repetition.

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

An embodiment of the present application further provides a chip. The chip includes a processor and a communication interface. The communication interface is coupled to the processor. The processor is used to run programs or instructions to implement the above embodiment of the frame structure determination method. Each process can achieve the same technical effect. To avoid repetition, we will not go into details here.

It should be understood that the chips mentioned in the embodiments of this application may also be called system-on-chip, system-on-a-chip, system-on-chip or system-on-chip, etc.

Embodiments of the present application further provide a computer program/program product. The computer program/program product is stored in a storage medium. The computer program/program product is executed by at least one processor to implement the above frame structure determination method. Each process in the example can achieve the same technical effect. To avoid repetition, we will not repeat it here.

An embodiment of the present application also provides a communication system, including: a first device, a second device, a third device and a target device as described in the above embodiments. The communication system can implement each process of the above frame structure determination method embodiment, and can achieve the same technical effect. To avoid repetition, details will not be described here.

It should be noted that, in this document, the terms "comprising", "comprises" or any other variations thereof are intended to cover a non-exclusive inclusion, such that a process, method, article or device that includes a series of elements not only includes those elements, It also includes other elements not expressly listed or inherent in the process, method, article or apparatus. Without further limitation, an element defined by the statement "comprises a..." does not exclude the presence of additional identical elements in a process, method, article or apparatus that includes that element. In addition, it should be pointed out that the scope of the methods and apparatuses in the embodiments of the present application is not limited to performing functions in the order shown or discussed, but may also include performing functions in a substantially simultaneous manner according to the functions involved. Or the functions may be performed in the reverse order, for example, the described methods may be performed in an order different than that described, and various steps may be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.

Through the above description of the embodiments, those skilled in the art can clearly understand that the methods of the above embodiments can be implemented by means of software plus the necessary general hardware platform. Of course, it can also be implemented by hardware, but in many cases the former is better. implementation. Based on this understanding, the technical solution of the present application can be embodied in the form of a computer software product that is essentially or contributes to the existing technology. The computer software product is stored in a storage medium (such as ROM/RAM, disk , CD), including several instructions to cause a terminal (which can be a mobile phone, computer, server, air conditioner, or network device, etc.) to execute the methods described in various embodiments of this application.

The embodiments of the present application have been described above in conjunction with the accompanying drawings. However, the present application is not limited to the above-mentioned specific implementations. The above-mentioned specific implementations are only illustrative and not restrictive. Those of ordinary skill in the art will Inspired by this application, many forms can be made without departing from the purpose of this application and the scope protected by the claims, all of which fall within the protection of this application.

Claims

A frame structure determination method, the method includes:

The target device configures and sends target configuration information; the target configuration information is used by the first device to calculate the first parameter carried in the first signal, the first signal is a signal generated according to the second signal and the third signal, and the The third signal is a baseband signal that modulates the second signal, and the first parameters are parameters of the third signal;

The target device calculates the second parameter corresponding to each of P frame structures based on the channel delay information reported by the first device and the first parameter, where P is a positive integer;

The target device determines a target frame structure used for data transmission from the P types of frame structures based on the P second parameters.
The method according to claim 1, wherein the target device includes any one of the following: the first device, the second device, the third device, and the fourth device;

Wherein, the first device is a backscatter 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: in addition to the first device, A network node device other than the second device and the third device.
The method according to claim 1, wherein the second signal includes: a first part, a second part, a third part and a fourth part;

Wherein, the first part and the second part satisfy that: both have a length of the first time unit, and contain exactly the same data; the third part and the fourth part satisfy that: both have a length of the second time unit, And the data included are the same;

The length of the first time unit is different from the length of the second time unit; both the first time unit and the second time unit are any of the following: symbols, time slots, subframes, and frames.
The method according to claim 1, wherein the channel delay information is used to indicate a first target delay and a second target delay; the first target delay is: a first channel transmission delay and a second target delay. The sum of channel transmission delays and the minimum channel transmission delay in the third channel transmission delay; the second target delay is: the sum of the first channel delay extension and the second channel delay extension, and the third The maximum channel delay spread in the channel delay spread;

Wherein, the first channel transmission delay and the first channel delay are expanded to: the channel delay between the second device and the third device; the second channel transmission delay and the The second channel delay is expanded to: the channel delay between the first device and the third device; the third channel transmission delay and the third channel delay are expanded to: the first device The channel delay between the device and the second device.
The method according to claim 1, wherein each two frame structures in the P types of frame structures satisfy: different lengths of repeating structures and/or different number of repetitions.
The method according to claim 1, wherein the first parameter includes any one of the following: bit error rate, bit error rate and signal-to-noise ratio; the second parameter includes any one of the following: bit error rate, error rate Code rate and signal-to-noise ratio.
The method of claim 1, wherein,

The target configuration information includes at least one of the following:

First configuration information, the first configuration information is used to configure signal parameters of the first signal;

second configuration information, the second configuration information is used to configure signal parameters of the second signal;

Third configuration information, the third configuration information is used to configure signal parameters of the third signal;

Fourth configuration information, the fourth configuration information is used to configure at least one of the following: the reporting method of the channel delay information, the reporting time and frequency resources of the channel delay information, and the carrying method of the channel delay information , the reporting method of the first parameter, the reporting time and frequency resources of the first parameter, and the carrying method of the first parameter.
The method of claim 7, wherein

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

and / or,

The signal parameters of the second signal 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;

and / or,

The signal parameters of the third signal include at least one of the following: the type of the third signal, the length of the third signal, and the time-frequency resource of the third signal.
The method according to any one of claims 1 to 8, wherein the target configuration information is carried through any of the following: Radio Resource Control RRC, Media Access Control Unit MAC-CE, Downlink Control Information DCI, Side link control information SCI, preamble sequence.
A frame structure determination method, the method includes:

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

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;

The first device calculates the first parameter of the third signal based on the data of the third signal;

The first device obtains channel delay information, and reports the channel delay information and the first parameter to the target device;

Wherein, the first configuration information is used to configure the signal parameters of the first signal, the second configuration information is used to configure the signal parameters of the second signal, and the third configuration information is used to configure the third signal. Signal parameters of three signals;

The first signal, the second signal and the third signal are all used to obtain the first parameter or obtain the channel delay information.
The method of claim 10, wherein:

Demodulating the first signal includes:

The first device demodulates the first signal according to preset criteria;

Wherein, the preset criterion includes at least one of the following: a criterion based on differential signal structure, a maximum likelihood detection criterion, and a minimum Euclidean distance criterion.
The method according to 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 the following: amplitude differential modulation, phase differential modulation, amplitude and phase differential modulation.
The method according to 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 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 the first time unit; and if the bit information indicates the first value, then the amplitude value of the third signal is the first amplitude value; if the bit information indicates the second value, then the third signal The amplitude value of the first half symbol period of the 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 mutually exclusive. same;

And the third signal carries bit information through the amplitude difference value between the first half symbol period of the second symbol period and the second half symbol period of the second symbol period. The length is twice the second time unit; and if the bit information indicates the first value, the amplitude value of the third signal is the fourth amplitude value; if the bit information indicates the second value, the amplitude value of the third signal is the fourth amplitude value; if the bit information indicates the second value, the amplitude value of the third signal is the fourth amplitude value. The amplitude value of the first half symbol period of the third signal is the fifth amplitude value, the amplitude value of the second half symbol period of the third signal is the sixth amplitude value, and the fifth amplitude value interacts with the sixth amplitude value. Are not the same.
The method according to 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 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, then the third The phase value of the first half symbol period of the 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 mutually exclusive. same;

And 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. The length is twice the second time unit; and if the bit information indicates the first value, the phase value of the third signal is the fourth phase value; if the bit information indicates the second value, the phase value of the third signal is the fourth phase value. The phase value of the first half symbol period of the third signal is the fifth phase value, the phase value of the second half symbol period of the third signal is the sixth phase value, and the fifth phase value and the sixth phase value are mutually exclusive. Are not the same.
The method according to 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 values of the first half symbol period of the first symbol period and the second half symbol period of the first symbol period, and the first symbol period The length of is twice 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, and the phase value of the third signal is the first phase value ; If the bit information indicates the second value, then the amplitude value of the first half symbol period of the third signal is the second amplitude value, and 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 a third amplitude value, the phase value of the second half symbol period of the third signal is a third phase value, and the second amplitude value is the same as the third phase value. The three amplitude values are different from each other, and the second phase value and the third phase value are different from each other;

And the third signal carries bit information through the amplitude and phase difference values of the first half symbol period of the second symbol period and the second half symbol period of the second symbol period, and the second symbol The length of the period is twice the second time unit; and if the bit information indicates the first value, the amplitude value of the third signal is the fourth amplitude value, and the phase value of the third signal is the 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 The fifth amplitude value, the phase value of the first half symbol period of the third signal is the fifth phase value, the amplitude value of the second half symbol period of the third signal is the sixth amplitude value, and the The phase value of the second half symbol period is the 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.
The method according to any one of claims 13 to 15, wherein,

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

and / or,

The first value is bit 0 and the second value is bit 1; or the first value is bit 1 and the second value is bit 0.
The method according to any one of claims 10 to 15, wherein the first device obtains channel delay information, including:

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

The first device reports the channel delay information to the target device in a first reporting manner according to the fourth configuration information, and reports the first parameter to the target device in a second reporting manner, so The first reporting method is different from the second reporting method;

Wherein, the fourth configuration information is used to configure at least one of the following: the reporting method of the channel delay information, the reporting time and frequency resources of the channel delay information, the carrying method of the channel delay information, the The reporting method of the first parameter, the reporting time and frequency resources of the first parameter, and the carrying method of the first parameter.
The method according to claim 18, wherein the channel delay information is used to indicate at least one of the following: a first transmission delay, a first delay spread, a second transmission delay, a second delay spread, a third Third transmission delay, third delay extension;

Wherein, the first transmission delay is the channel transmission delay between the second device and the third device, and the first delay is extended to the channel transmission delay between the second device and the third device. The channel delay extension is; the second transmission delay is the channel transmission delay between the first device and the third device, and the second delay extension is the channel transmission delay between the first device and the third device. The channel delay expansion between the three devices; the third transmission delay is the channel transmission delay between the first device and the second device, and the third transmission delay is expanded to the first device The channel delay between the device and the second device is expanded.
The method of claim 19, wherein:

The first reporting method includes any of the following:

Report the first transmission delay, the first delay extension, the second transmission delay, the second delay extension, the third transmission delay, and the third delay extension respectively;

Report respectively the sum of the first transmission delay and the second transmission delay, the sum of the first delay extension and the second delay extension, the third transmission delay, the third Delay extension;

Report the sum of the first transmission delay and the second transmission delay, and the minimum transmission delay in the third transmission delay; and report the first delay extension and the second delay The sum of extensions and the maximum delay extension among the third delay extensions.
The method of claim 18, wherein the first parameter includes any of the following: bit error rate, bit error rate and signal-to-noise ratio;

The second reporting method includes any of the following:

Only report the first parameter of the first target signal;

Only report the first parameter of the second target signal;

Simultaneously report 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 with a length of a first symbol period; the second target signal is: the third signal with a length of a second symbol period.
A frame structure determination method, the method includes:

The second device sends a second signal according to the second configuration information, where the second configuration information is used to configure signal parameters of the second signal;

Wherein, the second signal includes: a first part, a second part, a third part and a fourth part; the first part and the second part meet the following requirements: the length of both is the first time unit, and the included data is completely are the same; the third part and the fourth part satisfy that: both have a length of the second time unit and include the same data part; the length of the first time unit is different from the length of the second time unit.
The method of claim 22, wherein:

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

and / or,

The data in the target time unit is: a non-random sequence or a random sequence generated according to preset rules; wherein the target time unit is the first time unit or the second time unit.
The method according to claim 22 or 23, wherein the signal parameters of the second signal include at least one of the following: a type of the second signal, a length of the second signal, a timing of the second signal frequency resources.
The method according to any one of claims 22 to 24, wherein the second signal is: a signal that provides a radio frequency carrier for the third device.
A frame structure determination method, the method includes:

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

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

Wherein, the first configuration information is used to configure the signal parameters of the first signal, the second configuration information is used to configure the signal parameters of the second signal, and the third configuration information is used to configure the third signal. Signal parameters of three signals;

The first signal, the second signal and the third signal are all used to obtain the first parameter of the third signal or obtain channel delay information.
The method of claim 26, wherein:

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

and / or,

The signal parameters of the second signal 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;

and / or,

The signal parameters of the third signal include at least one of the following: the type of the third signal, the length of the third signal, and the time-frequency resource of the third signal.
The method according to claim 26 or 27, wherein the second signal includes: a first part, a second part, a third part and a fourth part;

Wherein, the first part and the second part satisfy that: both have a length of the first time unit, and contain exactly the same data; the third part and the fourth part satisfy that: both have a length of the second time unit, And the data included are the same;

The length of the first time unit is different from the length of the second time unit; both the first time unit and the second time unit are any of the following: symbols, time slots, subframes, and frames.
The method according to 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;

Wherein, the target modulation is any one of the following: amplitude differential modulation, phase differential modulation, amplitude and phase differential modulation.
The method according to claim 29, 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 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 the first time unit; and if the bit information indicates the first value, then the amplitude value of the third signal is the first amplitude value; if the bit information indicates the second value, then the third signal The amplitude value of the first half symbol period of the 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 mutually exclusive. same;

And the third signal carries bit information through the amplitude difference value between the first half symbol period of the second symbol period and the second half symbol period of the second symbol period. The length is twice the second time unit; and if the bit information indicates the first value, the amplitude value of the third signal is the fourth amplitude value; if the bit information indicates the second value, the amplitude value of the third signal is the fourth amplitude value; if the bit information indicates the second value, the amplitude value of the third signal is the fourth amplitude value. The amplitude value of the first half symbol period of the third signal is the fifth amplitude value, the amplitude value of the second half symbol period of the third signal is the sixth amplitude value, and the fifth amplitude value interacts with the sixth amplitude value. Are not the same.
The method according to claim 29, 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 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, then the third The phase value of the first half symbol period of the 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 mutually exclusive. same;

And 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. is twice the length of the second time unit; and If the bit information indicates the first value, the phase value of the third signal is the 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 The fifth phase value, the phase value of the second half symbol period of the third signal is the sixth phase value, and the fifth phase value and the sixth phase value are different from each other.
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 values of the first half symbol period of the first symbol period and the second half symbol period of the first symbol period, and the first symbol period The length of is twice 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, and the phase value of the third signal is the first phase value ; If the bit information indicates the second value, then the amplitude value of the first half symbol period of the third signal is the second amplitude value, and 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 a third amplitude value, the phase value of the second half symbol period of the third signal is a third phase value, and the second amplitude value is the same as the third phase value. The three amplitude values are different from each other, and the second phase value and the third phase value are different from each other;

And the third signal carries bit information through the amplitude and phase difference values of the first half symbol period of the second symbol period and the second half symbol period of the second symbol period, and the second symbol The length of the period is twice the second time unit; and if the bit information indicates the first value, the amplitude value of the third signal is the fourth amplitude value, and the phase value of the third signal is the 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 the fifth amplitude value, and the phase value of the first half symbol period of the third signal is the fifth phase value, so 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, and the fifth amplitude value is the same as the fifth amplitude value. The amplitude values are different from each other, and the sixth phase value and the sixth phase value are different from each other.
The method according to any one of claims 30 to 32, wherein,

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

and / or,

The first value is bit 0 and the second value is bit 1; or the first value is bit 1 and the second value is bit 0.
A frame structure determination device, the device includes a configuration module, a calculation module and a determination module;

The configuration module is configured to configure and send target configuration information; the target configuration information is used by the first device to calculate the first parameter of the third signal carried in the first signal, and the first signal is based on the second signal and A signal generated by a third signal, where the third signal is a baseband signal that modulates the second signal, and the first parameter is a parameter of the third signal;

The calculation module is configured to calculate the second parameter corresponding to each of P frame structures based on the channel delay information reported by the first device and the first parameter, where P is a positive integer;

The determination module is configured to determine a target frame structure used for data transmission from the P types of frame structures based on the P second parameters calculated by the calculation module.
A frame structure determination device, the device includes a receiving module, a demodulation module, a calculation module, and a processing module;

The receiving module is 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 is used to demodulate the first signal according to the first configuration information and the third configuration information to obtain the data of the third signal;

The calculation module is configured to calculate the first parameter of the third signal based on the data of the third signal demodulated by the demodulation module;

The processing module is used to obtain channel delay information, and report the channel delay information and the first parameter to the target device;

Wherein, the first configuration information is used to configure the signal parameters of the first signal, the second configuration information is used to configure the signal parameters of the second signal, and the third configuration information is used to configure the third signal. Signal parameters of three signals;

The first signal, the second signal and the third signal are all used to obtain the first parameter or obtain the channel delay information.
A frame structure determination device, the device includes a sending module;

The sending module is 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 includes: a first part, a second part, a third part and a fourth part; the first part and the second part meet the following requirements: the length of both is the first time unit, and the included data is completely are the same; the third part and the fourth part satisfy that: both have a length of the second time unit and include the same data part; the length of the first time unit is different from the length of the second time unit.
A frame structure determination device, the device includes a receiving module, a modulation module and a sending module;

The receiving module is configured to receive the second signal sent by the second device according to the second configuration information;

The modulation module is 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 sending module is configured to send the first signal according to the first configuration information;

Wherein, the first configuration information is used to configure the signal parameters of the first signal, the second configuration information is used to configure the signal parameters of the second signal, and the third configuration information is used to configure the third signal. Signal parameters of three signals;

The first signal, the second signal and the third signal are all used to obtain the first parameter of the third signal or obtain channel delay information.
A communication device, including a processor and a memory, the memory stores a program or instructions that can be run on the processor, and when the program or instructions are executed by the processor, any one of claims 1 to 9 is implemented. The steps of the frame structure determining method described in the item, or the steps of implementing the frame structure determining method described in any one of claims 10 to 21, or the frame structure described in any one of claims 22 to 25 The steps of the determination method, or the steps of implementing the frame structure determination method according to any one of claims 26 to 33.
A readable storage medium on which a program or instructions are stored. When the program or instructions are executed by a processor, the steps of the frame structure determination method according to any one of claims 1 to 9 are implemented, Or implement the steps of the frame structure determination method as described in any one of claims 10 to 21, or implement the steps of the frame structure determination method as described in any one of claims 22 to 25, or implement the steps of claim 26 The steps of the frame structure determination method described in any one of to 33.
A computer program product, which is executed by at least one processor to implement the frame structure determination method as claimed in any one of claims 1 to 9, or to implement the method as claimed in any one of claims 10 to 21. The frame structure determination method described above may implement the frame structure determination method as described in any one of claims 22 to 25, or the frame structure determination method as described in any one of claims 26 to 33.
An electronic device, including the electronic device configured to perform the frame structure determination method according to any one of claims 1 to 9, or to implement the frame according to any one of claims 10 to 21 The structure determination method either implements the frame structure determination method as described in any one of claims 22 to 25, or implements the frame structure determination method as described in any one of claims 26 to 33.
A chip, the chip includes a processor and a communication interface, the communication interface is coupled to the processor, and the processor is used to run programs or instructions to implement the frame according to any one of claims 1 to 9 Structure determination method, or implement the frame structure determination method as described in any one of claims 10 to 21, or implement the frame structure determination method as described in any one of claims 22 to 25, or implement as claimed in claim 26 The frame structure determination method described in any one of to 33.