WO2024022276A1

WO2024022276A1 - Low-power-consumption signal transmission method, apparatus, terminal and communication device

Info

Publication number: WO2024022276A1
Application number: PCT/CN2023/108832
Authority: WO
Inventors: 曲鑫; 沈晓冬
Original assignee: 维沃移动通信有限公司
Priority date: 2022-07-28
Filing date: 2023-07-24
Publication date: 2024-02-01
Also published as: CN117527166A

Abstract

The present application belongs to the technical field of communications. Disclosed in the present application are a low-power-consumption signal transmission method, an apparatus, a terminal, and a communication device. The low-power-consumption signal transmission method in the embodiments of the present application comprises: a first terminal receives a low power consumption signal, wherein the low power consumption signal comprises a first preamble, the time domain length of the first preamble comprises one first unit, and the first unit is an orthogonal frequency division multiplexing (OFDM) time domain symbol.

Description

Low-power signal transmission method, device, terminal and communication equipment

Cross-references to related applications

This application claims priority from the Chinese patent application with application number 202210901856.0 filed on July 28, 2022, the entire content of which is incorporated into this application by reference.

Technical field

The present application belongs to the field of communication technology, and specifically relates to a low-power signal transmission method, device, terminal and communication equipment.

Background technique

Currently, in WIFI-based transmission, a low-power wake-up mechanism is used, that is, when the terminal detects a low-power wake-up signal sent by the sending end, and the wake-up signal contains information about the terminal, it will receive and send data.

Among them, in 802.11ba, the physical layer protocol data unit (PPDU) of the low-power wake-up signal is shown in Table 1. Among them, the first five fields are used to achieve coexistence with existing 802.11 users. It has a low-power wake-up function, and the 802.11ba receiver does not decode it. The latter two fields are the synchronization domain and data domain of the low-power wake-up signal. The synchronization field contains two length sequences: 64us and 128us, indicating respectively. Two data rates for the data domain: 62.5kbs and 250kbs. Among them, the high-speed synchronization domain and data domain use OOK symbols with a length of 2us to send, and the low-speed data domain uses OOK symbols with a length of 4us to send. When the data domain has a low rate, the sequence corresponding to the synchronization domain is 10100100101110110001011100111000 repeated once. When the data domain has a high rate, the sequence corresponding to the synchronization domain is 01011011010001001110100011000111.

Table 1 PPDU of low-power wake-up signal

However, the 802.11ba low-power wake-up signal is based on the transmission parameters and competitive access mechanism design of WIFI and cannot be applied to cellular mobile systems. Therefore, it is necessary to design a new low-power signal suitable for cellular mobile systems.

Contents of the invention

Embodiments of the present application provide a low-power signal transmission method, device, terminal and communication equipment to provide a low-power signal suitable for cellular mobile systems.

The first aspect provides a low-power signal transmission method, including:

The first terminal receives a low-power signal;

Wherein, the low-power signal includes a first preamble, and the first preamble time domain length includes one first unit, and the first unit is an orthogonal frequency division multiplexing OFDM time domain symbol.

In the second aspect, a low-power signal transmission method is provided, including:

Communication devices send low-power signals;

Wherein, the low-power signal includes a first preamble, the first preamble time domain length includes a first unit, the first unit is an orthogonal frequency division multiplexing OFDM time domain symbol, and the communication The device is a second terminal or a network side device.

In a third aspect, a low-power signal transmission device is provided, including:

Low-power signal receiving module, used to receive low-power signals;

In the fourth aspect, a low-power signal transmission device is provided, including:

Low-power signal sending module, used to send low-power signals;

In a fifth aspect, a terminal is provided. The terminal includes a processor and a memory. The memory stores programs or instructions that can be run on the processor. When the program or instructions are executed by the processor, the following implementations are implemented: The steps of the method described in one aspect.

In a sixth aspect, a communication device is provided, including a processor and a memory. The memory stores a program or instructions that can be run on the processor. When the program or instructions are executed by the processor, the second step is implemented. The steps of the method described in the aspect; wherein the communication device is a network side device or a second terminal.

A seventh aspect provides a low-power signal transmission system, including: a first terminal and a communication device. The first terminal can be used to perform the steps of the low-power signal transmission method described in the first aspect. The communication device may be used to perform the steps of the low-power signal transmission method described in the second aspect above.

In an eighth 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 as described in the first aspect. The steps of the method described in the second aspect.

In a ninth 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. , or implement the method described in the second aspect.

In a tenth 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 the first aspect or the second aspect. The steps of the method described in this aspect.

In an eleventh aspect, embodiments of the present application provide a low-power signal transmission device, which is configured to perform the steps of the low-power signal transmission method described in the first or second aspect. In this embodiment of the present application, the first terminal can receive a low-power signal, wherein the low-power signal includes a first preamble, the first preamble time domain length includes one first unit, and the first unit is orthogonal Frequency division multiplexing OFDM time domain symbols. Therefore, in the embodiment of the present application, a low-power signal including a first preamble is provided, and the first preamble time domain length includes 1 OFDM time domain symbol, that is, a new low-power consumption structure is provided , thus being applicable to cellular mobile systems.

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 diagram of the working principle of NR LP WUR/WUS in the embodiment of the present application;

Figure 3 is a schematic diagram of OFDM signal time slots in the embodiment of the present application;

Figure 4 is a flow chart of a low-power signal transmission method provided by an embodiment of the present application;

Figure 5 is a flow chart of another low-power signal transmission method provided by an embodiment of the present application;

Figure 6 is a schematic diagram of the time interval between the first preamble, the second preamble, and the first data part in the embodiment of the present application;

Figure 7 is a schematic diagram of two encoding schemes of the first sub-data part and the second sub-data part in the embodiment of the present application;

Figure 8 is a schematic comparison diagram of the first sequence when the first preamble time domain length includes one OFDM time domain symbol in the embodiment of the present application;

Figure 9 is a structural block diagram of a low-power signal transmission device provided by an embodiment of the present application;

Figure 10 is a structural block diagram of another low-power signal transmission device provided by an embodiment of the present application;

Figure 11 is a structural block diagram of a communication device in an embodiment of the present application;

Figure 12 is a structural block diagram of a terminal in an embodiment of the present application;

Figure 13 is a structural block diagram of a network side device in an embodiment of the present application.

Specific embodiments

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. Among them, the terminal 11 can 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 handheld computer, a netbook, or a super mobile personal computer. (ultra-mobile personal computer, UMPC), mobile Internet device (Mobile Internet Device, MID), augmented reality (augmented reality, AR)/virtual reality (VR) equipment, robots, wearable devices (Wearable Device) , vehicle user equipment (VUE), pedestrian terminal (Pedestrian User Equipment, PUE), smart home (home equipment with wireless communication functions, such as refrigerators, TVs, washing machines or furniture, etc.), game consoles, personal computers (personal computer, PC), teller machine or self-service machine and other terminal-side devices. Wearable devices include: smart watches, smart bracelets, smart headphones, smart glasses, smart jewelry (smart bracelets, smart bracelets, smart rings, smart necklaces, smart anklets) bracelets, 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 equipment 12 may include access network equipment or core network equipment, where the access network equipment 12 may also be called wireless access network equipment, radio access network (Radio Access Network, RAN), 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 (evolved NodeB, eNB), an access point, or a Base Transceiver Station (BTS). ), radio base station, radio transceiver, Basic Service Set (BSS), Extended Service Set (ESS), home B-node, home evolved B-node, Transmitting Receiving Point (TRP) ) or some other appropriate term in the field, as long as the same technical effect is achieved, the base station is not limited to specific technical 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. Introduction, does not limit the specific type of base station.

In order to facilitate understanding of the low-power signal transmission method in the embodiment of the present application, the following related technologies are now introduced:

About OFDM signal frame structure:

In mobile communication systems, such as 5G New Radio (NR) and 4G Long Term Evolution (LTE), the minimum time unit in the time domain is an OFDM symbol, and one time slot contains 14 OFDM symbols. Each OFDM symbol begins with a cyclic prefix (CP), where the cyclic prefix is obtained by copying the length of the end part of an OFDM symbol. Among them, when the subcarrier spacing (SCS) is different, the length of each OFDM symbol is different. For example, when the subcarrier spacing is 15kHz, the length of an OFDM symbol except CP is 2048Ts. The CP length contained in the OFDM symbol is 144Ts, and the CP length contained in the first OFDM symbol is 160Ts, where Specifically, the length of an OFDM symbol and the normal CP length under different subcarrier spacing are shown in Table 2; the description of an OFDM signal slot, OFDM symbol, and cyclic prefix 301 is shown in Figure 3.

Table 2 OFDM symbols and CP length

The low-power signal transmission method 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.

In the first aspect, embodiments of the present application provide a low-power signal transmission method. As shown in Figure 4, the low-power signal transmission method includes the following steps:

Step 401: The first terminal receives a low power consumption signal.

Wherein, the low-power signal includes a first preamble, the time domain length of the first preamble includes one first unit, and the first unit is an orthogonal frequency division multiplexing OFDM time domain symbol. That is, in this embodiment of the present application, the low-power signal may include a first preamble, and the first preamble time domain length includes 1 OFDM time domain symbol.

In addition, the first terminal may receive the above-mentioned low power consumption signal sent by the second terminal or the network side device.

At the transmitting end (such as the second terminal or network side device), there are two ways to generate low-power signals: (1) directly generate the ASK signal in the time domain; (2) multiplex the OFDM signal generation structure, that is, generate it in the frequency domain The signal is then transformed into the time domain by inverse Fourier transform, thereby indirectly obtaining the ASK signal. Among them, the advantage of the second method is that it does not increase the complexity of the transmitter in the existing mobile communication system to generate the ASK signal, so it is more suitable for compatibility with the existing mobile system and does not require additional enhancements to the transmitter.

Optionally, the low-power consumption signal includes at least one of a low-power consumption wake-up signal, a low-power consumption holding signal, and a low-power consumption beacon signal.

In this embodiment of the present application, the first terminal may include a first module and a second module. The first module is a main communication module and is used to receive communication data transmitted by the sending end and send communication data. The second module is a low power consumption module. , used to receive the low-power wake-up signal and low-power beacon signal or low-power hold signal sent by the sending end (such as the second terminal or network side device). The low-power wake-up signal is used to wake up the main communication module. Low The power beacon signal or the low-power hold signal is used to provide time reference information and other information for receiving the low-power wake-up signal, and can also provide wake-up link management.

As shown in Figure 2, the first module remains in a closed state and does not send or receive data when it is not awakened by the second module. When the downlink data arrives, the second module detects the wake-up signal sent by the transmitter, and the wake-up signal contains this terminal information, the second module triggers the first module to switch from the closed state to the working state to receive and send data. The second module can be turned on continuously or discontinuously. When turned on, the second module can receive a low-power wake-up signal, a low-power beacon signal or a low-power holding signal.

It can be seen from the above that in the embodiment of the present application, the first terminal can receive a low-power signal, wherein the low-power signal includes a first preamble, the first preamble time domain length includes one first unit, and the first The unit is an orthogonal frequency division multiplexing OFDM time domain symbol. Therefore, in the embodiment of the present application, a low-power signal including a first preamble is provided, and the first preamble time domain length includes 1 OFDM time domain symbol, that is, a new low-power consumption structure is provided , thus being applicable to cellular mobile systems.

Optionally, the first preamble is associated with at least one first sequence, the first preamble is a time domain signal generated based on the associated first sequence, and the first sequence includes N second unit, the second unit is an amplitude shift keying ASK time domain symbol, and N is an integer greater than or equal to 1.

That is, in this embodiment of the present application, the modulation mode of the first sequence is ASK, and the first preamble can be generated based on the first sequence modulated by ASK.

It can be seen from this that the first preamble can be generated based on the first sequence related to it. Therefore, in the embodiment of the present application, after receiving the low-power signal, the first terminal can detect the first preamble based on the first sequence. The process of detecting the first preamble based on the first sequence will be described later.

Optionally, the low power consumption signal further includes at least one of a second preamble and a first data part.

It can be seen from this that, in addition to the first preamble, the low-power signal of the terminal in the embodiment of the present application may also include at least one of the second preamble and the first data part. That is, the low-power signal may include a first-level The preamble may also include a two-level preamble, or the low-power signal may also include a one-level preamble and a first data part. It can be understood that in some embodiments, the low-power signal may not include a preamble and only include the first data part.

Wherein, the information of the terminal device receiving the low-power signal and the wake-up function information may be carried in at least one of the first preamble, the second preamble, and the first data part.

Optionally, the second preamble time domain length includes M1 first units, M1 is an integer greater than or equal to 1, and the first units are OFDM time domain symbols.

That is, the second preamble time domain length may include at least one OFDM time domain symbol.

Optionally, the second preamble is associated with at least one second sequence, the second preamble is a time domain signal generated based on the associated second sequence, and the second sequence includes M2 second sequences. unit, the second unit is an ASK time domain symbol, and M2 is an integer greater than or equal to 1.

That is, in this embodiment of the present application, the modulation mode of the second sequence is ASK, and the second preamble can be generated based on the second sequence modulated by ASK.

It can be seen from this that the second preamble can be generated based on the second sequence related to it. Therefore, in this embodiment of the present application, after receiving the low-power signal, the first terminal can detect the second preamble based on the second sequence. The process of detecting the second preamble based on the second sequence will be described later.

Optionally, the first data part includes at least one of a first sub-data part and a second sub-data part, and the first sub-data part and the second sub-data part perform data encoding respectively, or the first sub-data part part and the second sub-data part are combined for data encoding.

That is, the first data part may include one of the first sub-data part and the second sub-data part that are separately encoded, or may include the first sub-data part and the second sub-data part that are combined and encoded.

Optionally, the time domain length of the first sub-data part includes L1 first units, the time domain length of the second sub-data part includes L2 first units, and L1 and L2 are respectively integers greater than or equal to 1. , the first unit is an OFDM time domain symbol.

That is, the first sub-data part may include one or more OFDM time domain symbols, and the second sub-data part may also include one or more first OFDM time domain symbols.

Optionally, the sequence of the first preamble, the second preamble and the first data part may be as described in the following situations A-1 to A-4:

Case A-1: In the case where the low-power signal includes the first preamble and the second preamble, the first preamble is located before the second preamble;

That is, in this case, the second preamble is located after the first preamble.

Case A-2: In the case where the low-power signal includes the first preamble and the first data part, the first preamble is located before the first data part.

That is, in this case, the first data part code is located after the first preamble code.

Case A-3: In the case where the low-power signal includes the second preamble and the first data part, the second preamble is located before the first data part.

That is, in this case, the first data part code is located after the second preamble code.

Case A-4: In the case where the low-power signal includes the first preamble, the second preamble and the first data part, the first preamble is located in the second preamble Previously, the second preamble was located before the first data part.

That is, in this case, the first data part code is located after the second preamble code, and the second preamble code is located after the first preamble code.

Optionally, in the case where the low-power signal includes the first preamble and the second preamble, there is a first time interval between the first preamble and the second preamble;

or,

In the case where the low-power signal includes the first preamble and the first data part, there is a third time interval between the first preamble and the first data part;

or,

In the case where the low-power signal includes the first preamble, the second preamble and the first data part, there is a first preamble between the first preamble and the second preamble. A time interval exists between the second preamble and the first data part.

The above-mentioned first time interval, second time interval and third time interval may be zero or non-zero.

Optionally, the method also includes:

The first terminal obtains parameter information of the low-power signal.

Optionally, the parameter information includes at least one of the following:

At least one first sequence associated with the first preamble;

At least one second sequence associated with the second preamble;

The time domain length of the first unit;

The number of first units included in the second preamble time domain length;

the number of second units included in the first sequence;

the number of second units included in the second sequence;

The time domain length of the second unit;

The number of first units included in the time domain length of the first sub-data part in the first data part;

The number of first units included in the time domain length of the second sub-data part in the first data part;

a first time interval between the first preamble and the second preamble;

a second time interval between the second preamble and the first data portion;

a third time interval between the first preamble and the first data portion;

The encoding scheme of the first preamble;

The encoding scheme of the second preamble;

the encoding scheme of the first sub-data part included in the first data part;

the encoding scheme of the second sub-data portion included in the first data portion;

The processing subject of the first sub-data part included in the first data part;

The first data part includes the processing body of the second sub-data part.

The first terminal can detect and decode the received low-power signal based on the parameter information.

Optionally, the parameter information is configured through a network side device, or is predefined by a protocol, or is indicated by the first preamble and/or the second preamble.

That is, the above parameter information may be configured by the network side device to the first terminal, may be predefined by the protocol, or may be indicated by the first preamble and/or the second preamble.

Optionally, the first preamble and the second preamble indicate the parameter information through different sequences associated with the parameter information.

That is, different contents in the above parameter information can be indicated through different sequences on the first preamble and the second preamble.

Optionally, the method also includes at least one of the following items B-1 to B-3:

Item B-1: In the case where the low-power signal includes the first preamble and the second preamble, the first terminal determines the time domain end position of the first preamble and the Parameter information determines the time domain start position and end position of the second preamble.

Optionally, the first terminal determines the time domain start position and end position of the second preamble based on the time domain end position of the first preamble and the parameter information, including:

The first terminal includes the time domain end position of the first preamble, the first time interval between the first preamble and the second preamble, and the time domain length of the second preamble. The number of first units determines the time domain start position and end position of the second preamble.

It can be seen from this that when the low-power signal includes the first preamble and the second preamble, the first terminal can determine the time domain end position of the first preamble and the first preamble and the second preamble included in the parameter information. The first time interval between the two preambles and the number of first units included in the time domain length of the second preamble determine the time domain start position and end position of the second preamble.

Wherein, according to the time domain end position of the first preamble and the first time interval between the first preamble and the second preamble, the time domain start position of the second preamble can be determined; according to the second preamble time The number of first units included in the domain length can determine the time domain length of the second preamble, so that the second preamble can be determined based on the time domain starting position of the second preamble and the time domain length of the first preamble. The end position of the time domain.

Item B-2: In the case where the low-power signal includes the first preamble and the first data part, the first terminal determines the time domain end position of the first preamble and the first data part. Parameter information determines the time domain start position and end position of the first data part.

Optionally, the first terminal determines the time domain start position and end position of the first data part based on the time domain end position of the first preamble and the parameter information, including:

The first terminal includes the time domain end position of the first preamble, the third time interval between the first preamble and the first data part, and the time domain length of the first data part. The number of first units determines the time domain start position and end position of the first data part.

It can be seen from this that, in the case where the low-power signal includes the first preamble and the first data part, the first terminal can determine the time domain end position of the first preamble and the first preamble and the first data part included in the parameter information. The third time interval between a data part and the number of first units included in the time domain length of the first data part determine the time domain start position and end position of the first data part.

Wherein, according to the time domain end position of the first preamble and the third time interval between the first preamble and the first data part, the time domain start position of the first data part can be determined; according to the time domain of the first data part The number of first units included in the domain length can determine the time domain length of the first data part, so that the first data part can be determined based on the time domain start position of the first data part and the time domain length of the first data part. The end position of the time domain.

Item B-3: In the case where the low-power signal includes the second preamble and the first data part, the first terminal determines the time domain end position of the second preamble and the first data part. Parameter information determines the time domain start position and end position of the first data part.

Optionally, the first terminal determines the time domain start position and end position of the first data part based on the time domain end position of the second preamble and the parameter information, including:

The first terminal includes the time domain end position of the second preamble, the second time interval between the second preamble and the first data part, and the time domain length of the first data part. The number of first units determines the time domain start position and end position of the first data part.

It can be seen from this that in the case where the low-power signal includes the second preamble and the first data part, the first terminal can determine the difference between the second preamble and the first data part according to the time domain end position of the second preamble and the second preamble included in the parameter information. The second time interval between a data part and the number of first units included in the time domain length of the first data part determine the time domain start position and end position of the first data part.

Wherein, according to the time domain end position of the second preamble and the second time interval between the second preamble and the first data part, the time domain start position of the first data part can be determined; according to the time domain of the first data part The number of first units included in the domain length can determine the time domain length of the first data part, so that the first data part can be determined based on the time domain start position of the first data part and the time domain length of the first data part. The end position of the time domain.

In addition, after receiving the low power consumption signal, the first terminal may also detect the low power consumption signal.

Wherein, the process of detecting the low-power signal by the first terminal is performed by at least one of the following C-1 to C-3:

Item C-1: In the case where the low-power signal includes a first preamble, the first terminal detects the first preamble according to the first sequence associated with the first preamble, and obtains the The time domain end position of the first preamble.

Optionally, the first terminal detects the first preamble according to the first sequence and obtains the time domain end position of the first preamble, including:

The first terminal performs autocorrelation on the first sequence and the received low-power signal to obtain a first result;

When the first result satisfies the first preset criterion, the first terminal determines that the first preamble is detected, and obtains the time domain end position of the first preamble based on the first result. .

In this embodiment of the present application, when the low-power signal includes a first preamble, and the time domain length of the first preamble includes one OFDM time domain symbol, the schematic diagram of the first sequence associated with the first preamble and the first preamble is as shown in Figure 8 , that is, excluding the cyclic prefix part, the first preamble is the same as the first sequence. Therefore, when the first terminal continuously slides the first sequence in the time domain and performs autocorrelation with the received signal, it is not affected by the cyclic prefix and successfully detects First preamble.

It can be seen from this that in order to avoid the impact of the cyclic prefix on the detection process of the first preamble, the time domain length of the first preamble can be designed to include one OFDM time domain symbol.

Item C-2: In the case where the low-power signal includes a second preamble, the first terminal detects the second preamble according to a second sequence associated with the second preamble.

It should be noted that in the case where the low-power signal only includes the second preamble, "the first terminal detects the second preamble according to the second sequence associated with the second preamble", which is the same as the above The process of "the first terminal detects the first preamble based on the first sequence associated with the first preamble" in item C-1 is the same and will not be described again here.

When the low-power signal includes a first preamble and a second preamble, the first terminal detects the second preamble according to the second sequence associated with the second preamble, including:

In the case where the second preamble time domain length includes one OFDM time domain symbol, the first terminal performs autocorrelation on the second sequence and the received low-power signal to obtain a second result;

If the second result satisfies a second preset criterion, the first terminal determines that the second preamble is detected;

or,

In the case where the second preamble time domain length includes multiple OFDM time domain symbols, the first terminal determines the time domain end position of the first preamble, the first preamble and the second The first time interval between preambles, the number of first units included in the time domain length of the second preamble, determine the time domain start position and end position of the second preamble;

The first terminal divides the second preamble into multiple first sub-parts of equal length according to the time domain start position and end position of the second preamble, wherein each of the first sub-parts is One OFDM time domain symbol;

The first terminal removes the cyclic prefix of each of the first subparts to obtain multiple second subparts;

The first terminal connects the plurality of second sub-parts end to end to form a target preamble;

The first terminal performs autocorrelation on the second sequence and the target preamble to obtain a third result;

If the third result satisfies a third preset criterion, the first terminal determines that the second preamble is detected.

The second preset criterion, the third preset criterion, and the above-mentioned first preset criterion may be the same or different.

When the low-power signal includes a second preamble, and the second preamble time domain length includes one OFDM time domain symbol, except for the cyclic prefix part, the second preamble is the same as the second sequence, so the first terminal will When the sequence continues to slide in the time domain and is autocorrelated with the received signal, it is not affected by the cyclic prefix and can successfully detect the second preamble.

When the low-power signal includes a second preamble, and the second preamble time domain length includes multiple OFDM time domain symbols, the cyclic prefix part can be removed, thereby avoiding the impact of the cyclic prefix on the detection process of the second preamble.

It can be seen from this that in order to avoid the impact of the cyclic preamble on the detection process of the second preamble, the time domain length of the second preamble can be designed to include one OFDM time domain symbol, or when it includes multiple OFDM symbols, the length of the second preamble can be During the code detection process, the cyclic prefix of each OFDM symbol is removed, thereby detecting a new preamble composed of the part with the cyclic prefix removed.

Item C-3: In the case where the low-power signal includes the first data part, the first terminal decodes the first data part.

Optionally, the first terminal decodes the first data part, including:

The first terminal obtains the time domain start position and end position of the first data part;

When the first data part includes an OFDM time domain symbol, the first terminal removes the cyclic prefix part in the target part to obtain a third subpart, and decodes the third subpart, where The target content includes a portion of the low-power signal from a time domain start position to an end position of the first data portion;

When the first data part includes multiple OFDM time domain symbols, the first terminal divides the first data part into multiple first data parts of equal length according to the time domain start position and end position of the first data part. Four sub-parts, wherein each fourth sub-part is an OFDM time domain symbol;

The first terminal removes the cyclic prefix of each of the fourth subparts to obtain multiple fifth subparts;

The first terminal connects the plurality of fifth sub-parts end to end to form a second data part;

The first terminal decodes the second data portion.

It can be seen that when the first data part includes one OFDM symbol, the cyclic prefix of the OFDM symbol can be removed and the remaining part can be decoded; when the first data part includes multiple OFDM symbols, the cyclic prefix of each OFDM symbol can be removed. prefix, and then concatenate the remaining parts into a new data part (i.e., the second data part), thereby decoding the new data part.

Optionally, when the first data part includes at least one of a first sub-data part and a second sub-data part, the first terminal decodes the first data part, including:

The low-power receiving module of the first terminal decodes the first sub-data part;

and / or,

At least one of the low-power receiving module and the main communication module of the first terminal decodes the second sub-data part.

Among them, the specific situation of decoding the first data part and the second sub-data part can also be divided into three situations: the time domain length of the first sub-data part includes one OFDM symbol or multiple OFDM symbols, and the time domain length of the second sub-data part. The domain length includes three cases of one OFDM symbol and multiple OFDM symbols. For the specific decoding process in each case, please refer to the explanation of the above C-3 content and will not be repeated here.

In the second aspect, embodiments of the present application provide a low-power signal transmission method. As shown in Figure 5, the low-power signal transmission method includes the following steps:

Step 501: The communication device sends a low-power signal;

That is, in this embodiment of the present application, the low-power signal may include a first preamble, and the first preamble time domain length includes 1 OFDM time domain symbol.

It can be seen from the above that in the embodiment of the present application, the second terminal or the network side device can send a low-power signal, wherein the low-power signal includes a first preamble, and the first preamble time domain length includes a first Unit, the first unit is orthogonal frequency division multiplexing OFDM time domain symbols. Therefore, in the embodiment of the present application, a low-power signal including a first preamble is provided, and the first preamble time domain length includes 1 OFDM time domain symbol, that is, a new low-power consumption structure is provided , thus being applicable to cellular mobile systems.

It can be seen from this that the first preamble can be generated based on the first sequence related to it. Therefore, in this embodiment of the present application, after receiving the low-power signal, the first terminal can detect the first preamble based on the first sequence. The process of detecting the first preamble based on the first sequence will be described later.

It can be seen from this that, in addition to the first preamble, the low-power signal of the terminal in the embodiment of the present application may also include at least one of the second preamble and the first data part. That is, the low-power signal may include a first-level The preamble may also include a two-level preamble, and may also include a one-level preamble and a first data part. It can be understood that the low-power signal may not include a preamble and only include the first data part.

That is, in this case, the second preamble is located after the first preamble.

or,

In summary, the specific implementation of the low-power signal transmission method in the embodiment of the present application can be as follows.

The structure of a low-power signal (such as a low-power wake-up signal or a low-power hold signal or a low-power beacon signal) is shown in Figure 6 (that is, it includes a first preamble, a second preamble and a first data part) , corresponding to the case where the first time interval and the second time interval are 0 or not 0 respectively. Without loss of generality, the values of the first time interval and the second time interval may be 0 or not 0. The low-power wake-up signal or the low-power hold/beacon signal includes at least one of a first preamble, a second preamble and a first data part.

In addition, at the transmitting end, there are two ways to generate low-power signals (i.e., low-power wake-up signals or low-power hold or low-power beacon signals):

(1) Generate ASK signal directly in the time domain;

(2) Multiplex the OFDM signal generation structure, generate the signal in the frequency domain and then undergo inverse Fourier transformation to the time domain, thereby indirectly obtaining the ASK signal.

Specifically, corresponding to the above generation method (2):

1. The first preamble time domain length includes one OFDM time domain symbol, where the lengths of OFDM time domain symbols and cyclic prefixes corresponding to different subcarrier intervals are as shown in the aforementioned Table 2.

2. The process of the terminal detecting the first preamble includes step 2-1:

Step 2-1: Continue to autocorrelate the first sequence associated with the first preamble with the received signal. When the result meets the third preset criterion of the sequence, it is determined that the first preamble is successfully detected and the first preamble is determined. The end position of the time domain.

In particular, when the first preamble contains one OFDM time domain symbol length, the schematic diagram of the first sequence associated with the first preamble is shown in Figure 8, that is, the remaining part of the first preamble after excluding the cyclic prefix part, and The first sequence is the same. Therefore, when the terminal continuously slides the first sequence in the time domain and performs autocorrelation with the received signal, it can successfully detect the first preamble without being affected by the cyclic prefix.

3. The second preamble time domain length includes at least one OFDM time domain symbol.

4. The process of the terminal detecting the second preamble includes steps 4-1 and 4-3:

Step 4-1: The terminal determines the time domain start position and end position of the second preamble in the received signal based on the time domain end position of the first preamble, the first time interval and M;

Step 4-2: When the time domain length of the second preamble includes multiple OFDM time domain symbols, the terminal divides the received second preamble into M sub-codes of equal length according to the time domain start position and end position of the second preamble. Each sub-part is an OFDM time domain symbol. After removing the cyclic prefix of each OFDM time domain symbol, the remaining parts of the M OFDM time domain symbols with the cyclic prefix removed are connected end to end to form a new second preamble. code, perform autocorrelation detection with the associated second sequence, and when the result meets the fourth preset criterion, it is determined that the second preamble code has been successfully detected;

Step 4-3. When the second preamble time domain length includes 1 OFDM time domain symbol, the terminal performs autocorrelation on the second sequence associated with the second preamble and the received second preamble, and the result is When five preset criteria are met, it is determined that the second preamble is successfully detected.

5. The first data part includes a first sub-data part and a second sub-data part, where the first sub-data part includes L1 OFDM time domain symbols, and the second sub-data part includes L2 OFDM time domain symbols, as shown in Figure 7 As shown, channel coding is performed respectively on the first sub-data part and the second sub-data part, and the first sub-data part and the second sub-data part are combined to perform channel coding.

6. The steps for the terminal to decode the first data part include step 6-1:

Step 6-1: The terminal determines the time domain start position and end position of the first data part in the received signal based on the time domain end position of the second preamble, the second time interval, and L1, L2.

Wherein, after detecting the time domain start position and end position of the first data part, the first sub-data part is processed by the first module, and the second sub-data part is processed by at least one of the first module and the second module. In a process, the first module is a low-power receiving module, and the second module is a main communication module, where the CRC is checked in the first module or the second module respectively.

In addition, when the terminal decodes the first data part, it may also use the same method of removing the cyclic prefix as the second preamble and then decode it. The specific method of removing cyclic prefixes can be found in the previous article and will not be repeated here.

In summary, the embodiments of the present application design a new low-power signal structure to achieve synchronization with the transmitter, carry wake-up function information, etc., and further, when multiplexing the existing transmitter structure, such as the OFDM transmitter unit , the designed signal structure can be compatible and ensure low-power signal performance, reduce the impact of cyclic prefix on low-power signal detection, and can effectively improve the preamble detection performance, thereby increasing the detection probability of low-power wake-up signals; on the other hand, Through the design of the data part, it can adapt to the information processing requirements of different modules and has good forward compatibility.

For the low-power signal transmission method provided by the embodiments of the present application, the execution subject may be a low-power signal transmission device. In the embodiment of the present application, a low-power signal transmission device performing a low-power signal transmission method is used as an example to illustrate the low-power signal transmission device provided by the embodiment of the present application.

In the third aspect, embodiments of the present application provide a low-power signal transmission device, which can be applied to the first terminal. As shown in Figure 9, the low-power signal transmission device 90 can include the following modules:

Low-power signal receiving module 901, used to receive low-power signals;

or,

Optionally, the device also includes:

A parameter information acquisition module is used to acquire parameter information of the low-power signal.

Optionally, the device further includes at least one of the following modules:

A first processing module configured to, when the low-power signal includes the first preamble and the second preamble, based on the time domain end position of the first preamble and the parameter information, Determine the time domain start position and end position of the second preamble;

A second processing module configured to, when the low-power signal includes the first preamble and the first data part, based on the time domain end position of the first preamble and the parameter information, Determine the time domain start position and end position of the first data part;

A third processing module configured to, when the low-power signal includes the second preamble and the first data part, based on the time domain end position of the second preamble and the parameter information, The time domain start position and end position of the first data portion are determined.

Optionally, the parameter information includes at least one of the following:

At least one first sequence associated with the first preamble;

At least one second sequence associated with the second preamble;

The time domain length of the first unit;

The number of first units included in the second preamble time domain length;

the number of second units included in the first sequence;

the number of second units included in the second sequence;

The time domain length of the second unit;

a first time interval between the first preamble and the second preamble;

a second time interval between the second preamble and the first data portion;

a third time interval between the first preamble and the first data portion;

The encoding scheme of the first preamble;

The encoding scheme of the second preamble;

the encoding scheme of the first sub-data part included in the first data part;

The first data part includes the processing body of the second sub-data part.

Optionally, the first processing module is specifically used to:

According to the time domain end position of the first preamble, the first time interval between the first preamble and the second preamble, and the number of first units included in the second preamble time domain length , determine the time domain start position and end position of the second preamble.

Optionally, the second processing module is specifically used to:

According to the time domain end position of the first preamble, the third time interval between the first preamble and the first data part, and the number of first units included in the time domain length of the first data part , determine the time domain start position and end position of the first data part.

Optionally, the third processing module is specifically used for:

According to the time domain end position of the second preamble, the second time interval between the second preamble and the first data part, and the number of first units included in the time domain length of the first data part , determine the time domain start position and end position of the first data part.

The low-power signal transmission 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. For example, the terminal may include but is not limited to the type of terminal 11 listed above.

The low-power signal transmission device provided by the embodiment of the present application can implement each process implemented by the method embodiment in Figure 4 and achieve the same technical effect. To avoid duplication, the details will not be described here.

In the fourth aspect, embodiments of the present application provide a low-power signal transmission device, which can be applied to communication equipment. The communication equipment can be a network-side device (such as a base station) or a second terminal, as shown in Figure 10. The low-power signal transmission device 100 may include the following modules:

Low-power signal sending module 1002, used to send low-power signals;

or,

The low-power signal transmission 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 low-power signal transmission device provided by the embodiment of the present application can implement each process implemented by the method embodiment in Figure 5 and achieve the same technical effect. To avoid duplication, the details will not be described here.

Optionally, as shown in Figure 11, this embodiment of the present application also provides a communication device 1100, which includes a processor 1101 and a memory 1102. The memory 1102 stores programs or instructions that can be run on the processor 1101, such as , when the communication device 1100 is the first terminal, when the program or instruction is executed by the processor 1101, each step of the low-power signal transmission method embodiment described in the first aspect is implemented, and the same technical effect can be achieved. When the communication device 1100 is a network-side device or a second terminal, when the program or instruction is executed by the processor 1101, each step of the embodiment of the low-power signal transmission method described in the second aspect is implemented, and the same technology can be achieved. The effect will not be described here to avoid repetition.

This embodiment of the present application also provides a terminal. Figure 12 is a schematic diagram of the hardware structure of a terminal that implements the embodiment of the present application. The terminal 1200 includes but is not limited to: a radio frequency unit 1201, a network module 1202, an audio output unit 1203, an input unit 1204, a sensor 1205, a display unit 1206, a user input unit 1207, an interface unit 1208, a memory 1209, a processor 1210, etc. At least some parts.

Those skilled in the art can understand that the terminal 1200 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 1210 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 Figure 12 does not constitute a limitation on 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 1204 may include a graphics processing unit (Graphics Processing Unit, GPU) 12041 and a microphone 12042. The graphics processor 12041 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 1206 may include a display panel 12061, which may be configured in the form of a liquid crystal display, an organic light emitting diode, or the like. The user input unit 1207 includes a touch panel 12071 and at least one of other input devices 12072. Touch panel 12071, also known as touch screen. The touch panel 12071 may include two parts: a touch detection device and a touch controller. Other input devices 12072 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 1201 can transmit it to the processor 1210 for processing; in addition, the radio frequency unit 1201 can send uplink data to the network side device. Generally, the radio frequency unit 1201 includes, but is not limited to, an antenna, amplifier, transceiver, coupler, low noise amplifier, duplexer, etc.

Memory 1209 may be used to store software programs or instructions as well as various data. The memory 1209 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 1209 may include volatile memory or nonvolatile memory, or memory 1209 may include both volatile and nonvolatile memory. Among them, the 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). Memory 1209 in embodiments of the present application includes, but is not limited to, these and any other suitable types of memory.

The processor 1210 may include one or more processing units; optionally, the processor 1210 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 1210.

Wherein, when the terminal 1200 serves as the first terminal, the radio frequency unit 1201 is used to receive a low-power signal; wherein the low-power signal includes a first preamble, and the first preamble time domain length includes a first unit, and the first unit is an orthogonal frequency division multiplexing OFDM time domain symbol.

or,

Optionally, the processor 1210 is configured to obtain parameter information of the low power consumption signal.

Optionally, the processor 1210 is also configured to perform at least one of the following:

In the case where the low-power signal includes the first preamble and the second preamble, the second preamble is determined based on the time domain end position of the first preamble and the parameter information. The start position and end position of the time domain;

In the case where the low-power signal includes the first preamble and the first data part, the first data part is determined based on the time domain end position of the first preamble and the parameter information. The start position and end position of the time domain;

In the case where the low-power signal includes the second preamble and the first data part, the first data part is determined based on the time domain end position of the second preamble and the parameter information. The start position and end position of the time domain.

Optionally, the parameter information includes at least one of the following:

At least one first sequence associated with the first preamble;

At least one second sequence associated with the second preamble;

The time domain length of the first unit;

The number of first units included in the second preamble time domain length;

the number of second units included in the first sequence;

the number of second units included in the second sequence;

The time domain length of the second unit;

a first time interval between the first preamble and the second preamble;

a second time interval between the second preamble and the first data portion;

a third time interval between the first preamble and the first data portion;

The encoding scheme of the first preamble;

The encoding scheme of the second preamble;

the encoding scheme of the first sub-data part included in the first data part;

The first data part includes the processing body of the second sub-data part.

Optionally, the processor 1210 determines the time domain start position and the end position of the second preamble according to the time domain end position of the first preamble and the parameter information, specifically for: according to the first The time domain end position of the preamble, the first time interval between the first preamble and the second preamble, and the number of first units included in the second preamble time domain length determine the first The time domain start position and end position of the two preambles.

Optionally, the processor 1210 determines the time domain start position and the end position of the first data part according to the time domain end position of the first preamble and the parameter information, specifically for:

Optionally, the processor 1210 determines the time domain start position and the end position of the first data part according to the time domain end position of the second preamble and the parameter information, specifically for:

When the terminal 1200 serves as the second terminal, the radio frequency module 1201 is used to send a low-power signal; wherein the low-power signal includes a first preamble, and the first preamble time domain length includes 1 first unit , the first unit is an orthogonal frequency division multiplexing OFDM time domain symbol, and the communication device is a second terminal or a network side device.

or,

An embodiment of the present application also provides a network-side device, including a processor and a communication interface. The processor is configured to generate a low-power signal, wherein the low-power signal includes a first preamble, a second preamble, and first data. At least one of the parts; a communication interface for sending the low power signal.

This network-side device embodiment corresponds to the above-mentioned network-side device method embodiment. Each implementation process and implementation manner of the above-mentioned method embodiment can be applied to this network-side device embodiment, and can achieve the same technical effect.

Specifically, the embodiment of the present application also provides a network side device. As shown in FIG. 13 , the network side device 1300 includes: an antenna 131 , a radio frequency device 132 , a baseband device 133 , a processor 134 and a memory 135 . The antenna 131 is connected to the radio frequency device 132 . In the uplink direction, the radio frequency device 132 receives information through the antenna 131 and sends the received information to the baseband device 133 for processing. In the downlink direction, the baseband device 133 processes the information to be sent and sends it to the radio frequency device 132. The radio frequency device 132 processes the received information and then sends it out through the antenna 131.

The method performed by the network side device in the above embodiment can be implemented in the baseband device 133, which includes a baseband processor.

The baseband device 133 may include, for example, at least one baseband board on which multiple chips are disposed, as shown in FIG. Program to perform the network device operations shown in the above method embodiments.

The network side device may also include a network interface 136, which is, for example, a common public radio interface (CPRI).

Specifically, the network side device 1300 in this embodiment of the present invention also includes: instructions or programs stored in the memory 135 and executable on the processor 134. The processor 134 calls the instructions or programs in the memory 135 to execute the various operations shown in Figure 5. The method of module execution and achieving the same technical effect will not be described in detail here to avoid duplication.

Embodiments of the present application also provide a readable storage medium, with programs or instructions stored on the readable storage medium. When the programs or instructions are executed by a processor, each process of the above low-power signal transmission method embodiment is implemented, and can achieve the same technical effect, so to avoid repetition, we will not go into details here.

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 low-power signal transmission method. Each process of the embodiment can achieve the same technical effect, so to avoid repetition, it will not be described again 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, and the computer program/program product is executed by at least one processor to implement the above-mentioned low-power signal transmission. Each process of the method embodiment can achieve the same technical effect, so to avoid repetition, it will not be described again here.

Embodiments of the present application also provide a low-power signal transmission system, including: a first terminal and a communication device. The first terminal can be used to perform the steps of the low-power signal transmission method described in the first aspect, so The communication device may be used to perform the steps of the low-power signal transmission method described in the second aspect above, and the communication device may be a second terminal or a network side device.

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 devices 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 or in reverse order according to the functions involved. Functions may be performed, for example, the methods described may be performed in an order different from 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 low-power signal transmission method, wherein the method includes:

The first terminal receives a low-power signal;

Wherein, the low-power signal includes a first preamble, and the first preamble time domain length includes one orthogonal frequency division multiplexing OFDM time domain symbol.
The method of claim 1, wherein the first preamble is associated with at least one first sequence, the first preamble is a time domain signal generated based on the associated first sequence, and the first preamble is a time domain signal generated based on the associated first sequence. A sequence includes N amplitude shift keying ASK time domain symbols, where N is an integer greater than or equal to 1.
The method of claim 1, wherein the low power consumption signal further includes at least one of a second preamble and a first data portion.
The method according to claim 3, wherein the second preamble time domain length includes M1 OFDM time domain symbols, and M1 is an integer greater than or equal to 1.
The method according to claim 3 or 4, wherein the second preamble is associated with at least one second sequence, the second preamble is a time domain signal generated based on the associated second sequence, so The second sequence includes M2 ASK time domain symbols, where M2 is an integer greater than or equal to 1.
The method of claim 3, wherein the first data part includes at least one of a first sub-data part and a second sub-data part, the first sub-data part and the second sub-data part perform data processing respectively. Encoding, or the first sub-data part and the second sub-data part are combined to perform data encoding.
The method according to claim 6, wherein the time domain length of the first sub-data part includes L1 OFDM time domain symbols, and the time domain length of the second sub-data part includes L2 OFDM time domain symbols, L1, L2 They are all integers greater than or equal to 1.
The method according to claim 1, wherein the low-power consumption signal includes at least one of a low-power consumption wake-up signal, a low-power consumption holding signal, and a low-power consumption beacon signal.
The method of claim 3, wherein when the low-power signal includes the first preamble and the second preamble, the first preamble and the second preamble are There is a first time interval between;

or,

In the case where the low-power signal includes the first preamble and the first data part, there is a third time interval between the first preamble and the first data part;

or,

In the case where the low-power signal includes the first preamble, the second preamble and the first data part, there is a first preamble between the first preamble and the second preamble. A time interval exists between the second preamble and the first data part.
The method of claim 3, further comprising:

The first terminal obtains parameter information of the low-power signal.
The method of claim 10, wherein the method further includes at least one of the following steps:

In the case where the low-power signal includes the first preamble and the second preamble, the first terminal determines the time domain end position of the first preamble and the parameter information. The time domain start position and end position of the second preamble;

In the case where the low-power signal includes the first preamble and the first data part, the first terminal determines the time domain end position of the first preamble and the parameter information. Describe the time domain start position and end position of the first data part;

In the case where the low-power signal includes the second preamble and the first data part, the first terminal determines the time domain end position of the second preamble and the parameter information. Describe the time domain start position and end position of the first data part.
The method according to claim 10 or 11, wherein the parameter information includes at least one of the following:

At least one first sequence associated with the first preamble;

At least one second sequence associated with the second preamble;

The time domain length of the OFDM time domain symbol;

The number of OFDM time domain symbols included in the second preamble time domain length;

The number of ASK time domain symbols included in the first sequence;

The number of ASK time domain symbols included in the second sequence;

The time domain length of the ASK time domain symbol;

The number of OFDM time domain symbols included in the time domain length of the first sub-data part in the first data part;

The number of OFDM time domain symbols included in the time domain length of the second sub-data part in the first data part;

a first time interval between the first preamble and the second preamble;

a second time interval between the second preamble and the first data portion;

a third time interval between the first preamble and the first data portion;

The encoding scheme of the first preamble;

The encoding scheme of the second preamble;

the encoding scheme of the first sub-data part included in the first data part;

the encoding scheme of the second sub-data portion included in the first data portion;

The processing subject of the first sub-data part included in the first data part;

The first data part includes the processing body of the second sub-data part.
The method according to claim 10 or 11, wherein the parameter information is configured by a network side device, or is predefined by a protocol, or is indicated by the first preamble and/or the second preamble.
The method of claim 13, wherein the first preamble and the second preamble indicate the parameter information through different sequences associated with the parameter information.
The method according to claim 12, wherein the first terminal determines the time domain start position and end position of the second preamble based on the time domain end position of the first preamble and the parameter information, include:

The first terminal includes the time domain end position of the first preamble, the first time interval between the first preamble and the second preamble, and the time domain length of the second preamble. The number of OFDM time domain symbols determines the time domain start position and end position of the second preamble.
The method according to claim 12, wherein the first terminal determines the time domain start position and the end position of the first data part based on the time domain end position of the first preamble and the parameter information, include:

The first terminal includes the time domain end position of the first preamble, the third time interval between the first preamble and the first data part, and the time domain length of the first data part. The number of OFDM time domain symbols determines the time domain start position and end position of the first data part.
The method according to claim 12, wherein the first terminal determines the time domain start position and the end position of the first data part based on the time domain end position of the second preamble and the parameter information, include:

The first terminal includes the time domain end position of the second preamble, the second time interval between the second preamble and the first data part, and the time domain length of the first data part. The number of OFDM time domain symbols determines the time domain start position and end position of the first data part.
A low-power signal transmission method, wherein the method includes:

Communication equipment sends low-power signals;

Wherein, the low-power signal includes a first preamble, the first preamble time domain length includes one orthogonal frequency division multiplexing OFDM time domain symbol, and the communication device is a second terminal or a network side device.
The method of claim 18, wherein the first preamble is associated with at least one first sequence, the first preamble is a time domain signal generated based on the associated first sequence, and the first preamble is a time domain signal generated based on the associated first sequence. A sequence includes N amplitude shift keying ASK time domain symbols, where N is an integer greater than or equal to 1.
The method of claim 18, wherein the low power signal further includes at least one of a second preamble and a first data portion.
The method according to claim 20, wherein the second preamble time domain length includes M1 OFDM time domain symbols, and M1 is an integer greater than or equal to 1.
The method according to claim 20 or 21, wherein the second preamble is associated with at least one second sequence, the second preamble is a time domain signal generated based on the associated second sequence, so The second sequence includes M2 ASK time domain symbols, where M2 is an integer greater than or equal to 1.
The method of claim 20, wherein the first data part includes at least one of a first sub-data part and a second sub-data part, the first sub-data part and the second sub-data part perform data processing respectively. Encoding, or the first sub-data part and the second sub-data part are combined to perform data encoding.
The method according to claim 23, wherein the time domain length of the first sub-data part includes L1 OFDM time domain symbols, the time domain length of the second sub-data part includes L2 first units, L1 and L2 respectively All are integers greater than or equal to 1.
The method according to claim 18, wherein the low-power consumption signal includes at least one of a low-power consumption wake-up signal, a low-power consumption holding signal, and a low-power consumption beacon signal.
The method of claim 20, wherein when the low-power signal includes the first preamble and the second preamble, There is a first time interval between;

or,

In the case where the low-power signal includes the first preamble and the first data part, there is a third time interval between the first preamble and the first data part;

or,

In the case where the low-power signal includes the first preamble, the second preamble and the first data part, there is a first preamble between the first preamble and the second preamble. A time interval exists between the second preamble and the first data part.
[Correction 03.08.2023 under Rule 91]
A low-power signal transmission device, wherein the device includes:

Low-power signal receiving module, used to receive low-power signals;

Wherein, the low-power signal includes a first preamble, and the first preamble time domain length includes one orthogonal frequency division multiplexing OFDM time domain symbol.
[Correction 03.08.2023 under Rule 91]
A low-power signal transmission device, wherein the device includes:

Low-power signal sending module, used to send low-power signals;

Wherein, the low-power signal includes a first preamble, and the first preamble time domain length includes one orthogonal frequency division multiplexing OFDM time domain symbol.
A terminal, which includes a processor and a memory. The memory stores programs or instructions that can be run on the processor. When the program or instructions are executed by the processor, any one of claims 1 to 17 is implemented. The steps of the low-power signal transmission method described in the item.
A communication device, which includes a processor and a memory. The memory stores programs or instructions that can be run on the processor. When the program or instructions are executed by the processor, any of claims 18 to 26 is implemented. The steps of the low-power signal transmission method described in one item, wherein the communication device is a terminal or a network-side device.
A readable storage medium, wherein programs or instructions are stored on the readable storage medium, and when the programs or instructions are executed by a processor, the low-power signal transmission method according to any one of claims 1-17 is implemented. , or implement the steps of the low-power signal transmission method as described in any one of claims 18 to 26.