Signal sending method, signal receiving method, apparatuses, terminal and network side device

Abstract

The present application belongs to the technical field of communications. Disclosed are a signal sending method, a signal receiving method, apparatuses, a terminal and a network side device. The signal sending method in the embodiments of the present application comprises: a network side device sends a first signal, the first signal at least comprising a complex signal sequence, and the complex signal sequence bearing information, or the complex signal sequence and the time position of the complex signal sequence bearing information, or the complex signal sequence and an on-off keying signal bearing information.

Description

Signal sending method, receiving method, device, terminal and network side equipment

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims priority to Chinese Patent Application No. 202410137504.1 filed on January 30, 2024, the entire contents of which are incorporated herein by reference. Technical Field

[0003] The present application belongs to the field of communication technology, and specifically relates to a signal sending method, receiving method, device, terminal and network side equipment. Background Art

[0004] In order to reduce power consumption, the terminal in the related art introduces a low-power receiver, which triggers the awakening of the main communication module by detecting a low-power wake-up signal. For the modulation method of the low-power wake-up signal, an on-off keying (OOK) signal superimposed on an orthogonal frequency division multiplex (OFDM) sequence can be selected to adapt to terminals with different receiver capabilities. However, it has not yet been determined how to use low-power signals to carry information. Summary of the Invention

[0005] The embodiments of the present application provide a signal sending method, receiving method, apparatus, terminal, and network-side equipment, which can solve the problem of how to use low-power signals to carry information.

[0006] In a first aspect, a signal transmission method is provided, which is performed by a network-side device. The method includes:

[0007] The network side device sends a first signal; wherein, the first signal includes at least a complex signal sequence, the complex signal sequence carries information, or the complex signal sequence and the time position of the complex signal sequence carry information, or the complex signal sequence and the on-off keying signal carry information.

[0008] In a second aspect, a signal receiving method is provided, which is performed by a terminal, and the method includes:

[0009] The terminal receives the first signal;

[0010] The terminal determines the information carried by the first signal based on the first information; the first information includes any one of the following items: a complex signal sequence in the first signal, a complex signal sequence in the first signal and a time position of the complex signal sequence, a complex signal sequence in the first signal and an on-off keying signal.

[0011] In a third aspect, a signal sending device is provided, which is applied to a network-side device, including:

[0012] A first sending module is used to send a first signal; wherein, the first signal at least includes a complex signal sequence, the complex signal sequence carries information, or the complex signal sequence and the time position of the complex signal sequence carry information, or the complex signal sequence and the on-off keying signal carry information.

[0013] In a fourth aspect, a signal sending device is provided, which is applied to a terminal and includes:

[0014] A receiving module, configured to receive a first signal;

[0015] A determination module is used to determine the information carried by the first signal based on first information; wherein the first information includes any one of the following items: a complex signal sequence in the first signal, a complex signal sequence in the first signal and a time position of the complex signal sequence, a complex signal sequence in the first signal and an on-off keying signal.

[0016] In a fifth aspect, a terminal is provided, comprising a processor and a memory, wherein the memory stores a program or instruction that can be run on the processor, and when the program or instruction is executed by the processor, the steps of the method described in the second aspect are implemented.

[0017] In the sixth aspect, a terminal is provided, comprising a processor and a communication interface, wherein the communication interface is used to receive a first signal, and the processor is used to determine the information carried by the first signal based on the first information; the first information includes any one of the following: a complex signal sequence in the first signal, a complex signal sequence in the first signal and a time position of the complex signal sequence, a complex signal sequence in the first signal and an on-off keying signal.

[0018] In the seventh aspect, a network side device is provided, which includes a processor and a memory, wherein the memory stores programs or instructions that can be run on the processor, and when the program or instructions are executed by the processor, the steps of the method described in the first aspect are implemented.

[0019] In the eighth aspect, a network side device is provided, including a processor and a communication interface, wherein the communication interface is used to send a first signal; the first signal includes at least a complex signal sequence, the complex signal sequence carries information, or the complex signal sequence and the time position of the complex signal sequence carry information, or the complex signal sequence and the on-off keying signal carry information.

[0020] In the ninth aspect, a readable storage medium is provided, on which a program or instruction is stored. When the program or instruction is executed by a processor, the steps of the method described in the first aspect are implemented, or the steps of the method described in the second aspect are implemented.

[0021] In the tenth aspect, a wireless communication system is provided, comprising: a terminal and a network side device, wherein the network side device can be used to execute the steps of the method described in the first aspect, and the terminal can be used to execute the steps of the method described in the second aspect.

[0022] In the eleventh aspect, a chip is provided, which includes a processor and a communication interface, wherein the communication interface is coupled to the processor, and the processor is used to run programs or instructions to implement the steps of the method described in the first aspect, or to implement the steps of the method described in the second aspect.

[0023] In the twelfth aspect, a computer program / program product is provided, which is stored in a storage medium and is executed by at least one processor to implement the steps of the method described in the first aspect, or to implement the steps of the method described in the second aspect.

[0024] In a thirteenth aspect, a network side device is provided, which is configured to implement the steps of the method described in the first aspect.

[0025] In a fourteenth aspect, a terminal is provided, configured to implement the steps of the method described in the second aspect.

[0026] In the embodiment of the present application, with the help of the complex signal sequence included in the first signal (such as the low-power signal), it is possible to use the low-power signal to carry information. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] FIG1 is a block diagram of a wireless communication system to which embodiments of the present application may be applied;

[0028] FIG2 is a schematic diagram of a low-power receiver architecture according to an embodiment of the present application;

[0029] FIG3 is a flow chart of a signal sending method provided in an embodiment of the present application;

[0030] FIG4 is a flow chart of a signal receiving method provided in an embodiment of the present application;

[0031] FIG5 is a schematic diagram of one of the information carrying methods in an embodiment of the present application;

[0032] FIG6 is a second schematic diagram of an information carrying method in an embodiment of the present application;

[0033] FIG7 is a third schematic diagram of an information carrying method in an embodiment of the present application;

[0034] FIG8 is a fourth schematic diagram of an information carrying method in an embodiment of the present application;

[0035] FIG9 is a fifth schematic diagram of an information carrying method in an embodiment of the present application;

[0036] FIG10 is a sixth schematic diagram of an information carrying method in an embodiment of the present application;

[0037] FIG11 is a schematic diagram of the seventh information carrying method in an embodiment of the present application;

[0038] FIG12 is a schematic diagram of an eighth information carrying method in an embodiment of the present application;

[0039] FIG13 is a ninth schematic diagram of an information carrying method in an embodiment of the present application;

[0040] FIG14 is a tenth schematic diagram of an information carrying method in an embodiment of the present application;

[0041] FIG15 is a schematic structural diagram of a signal sending device provided in an embodiment of the present application;

[0042] FIG16 is a schematic structural diagram of another signal sending device provided in an embodiment of the present application;

[0043] FIG17 is a schematic structural diagram of a communication device provided in an embodiment of the present application;

[0044] FIG18 is a schematic structural diagram of a terminal provided in an embodiment of the present application;

[0045] FIG19 is a schematic structural diagram of a network-side device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0046] The following will be combined with the accompanying drawings in the embodiments of this application to clearly describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field are within the scope of protection of this application.

[0047] The terms "first", "second", etc. in this application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the terms used in this way are interchangeable where appropriate, so that the embodiments of the present application can be implemented in an order other than those illustrated or described herein, and the objects distinguished by "first" and "second" are generally of the same type, and do not limit the number of objects, for example, the first object can be one or more. In addition, "or" in this application represents at least one of the connected objects. For example, "A or B" covers three options, namely, Option 1: including A but not including B; Option 2: including B but not including A; Option 3: including both A and B. The character " / " generally indicates that the objects associated before and after are in an "or" relationship.

[0048] The term "indication" in this application can be either a direct indication (or explicit indication) or an indirect indication (or implicit indication). A direct indication can be understood as the sender explicitly informing the receiver of specific information, the operation to be performed, or the requested result, etc. in the instruction sent; an indirect indication can be understood as the receiver determining the corresponding information based on the instruction sent by the sender, or making a judgment and determining the operation to be performed or the requested result, etc. based on the judgment result.

[0049] It is worth noting that the technology described in the embodiments of the present application is not limited to the Long Term Evolution (LTE) / LTE-Advanced (LTE-A) system, but can also be used in other wireless communication systems, such as Code Division Multiple Access (CDMA), Time Division Multiple Access (TDMA), Frequency Division Multiple Access (FDMA), Orthogonal Frequency Division Multiple Access (OFDMA), Single-carrier Frequency-Division Multiple Access (SC-FDMA) or other systems. The terms "system" and "network" in the embodiments of the present application are often used interchangeably, and the technology described can be used for the systems and radio technologies mentioned above, as well as for other systems and radio technologies. The following description describes a New Radio (NR) system for illustrative purposes, and NR terminology is used in most of the following description, but these technologies can also be applied to systems other than NR systems, such as 6th generation (6G) systems. thGeneration, 6G) communication system.

[0050] FIG1 is a block diagram of a wireless communication system applicable to an embodiment of the present application. 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), a notebook computer, a personal digital assistant (PDA), a handheld computer, a netbook, an ultra-mobile personal computer (UMPC), a mobile internet device (MID), an augmented reality (AR), a virtual reality (VR) device, a robot, a wearable device (Wearable Device), an aircraft (Flight Vehicle), a vehicle-mounted device (VUE), a ship-mounted device, a pedestrian user equipment (PUE), a smart home (home appliances with wireless communication capabilities, such as refrigerators, televisions, washing machines, or furniture), a game console, a personal computer (PC), an ATM, or a self-service machine, or 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, smart anklets, etc.), smart wristbands, smart clothing, etc. Among them, the vehicle-mounted device can also be called a vehicle-mounted terminal, a vehicle-mounted controller, a vehicle-mounted module, a vehicle-mounted component, a vehicle-mounted chip or a vehicle-mounted unit, etc. It should be noted that the specific type of the terminal 11 is not limited in the embodiment of the present application. The network side device 12 may include an access network device or a core network device, wherein the access network device may also be called a radio access network (Radio Access Network, RAN) device, a radio access network function or a radio access network unit. The access network device may include a base station, a wireless local area network (WLAN) access point (AP) or a wireless fidelity (WiFi) node, etc.Among them, the base station can be called Node B (NB), Evolved Node B (eNB), the next generation Node B (gNB), New Radio Node B (NR Node B), access point, Relay Base Station (RBS), Serving Base Station (SBS), Base Transceiver Station (BTS), radio base station, radio transceiver, Basic Service Set (BSS), Extended Service Set (ESS), Home Node B (HNB), Home evolved Node B (home evolved Node B), Transmission Reception Point (TRP) or other appropriate terms in the relevant field. As long as the same technical effect is achieved, the base station is not limited to specific technical vocabulary.

[0051] In order to facilitate understanding of the embodiments of the present application, the following contents are first described.

[0052] In the embodiment of the present application, the basic working principle of the low power wake up receiver (LP WUR) is as follows: as shown in Figure 2, the terminal (receiving end) includes a main communication module and a low power receiving module (i.e., a low power receiver), the main communication module is used for receiving and sending mobile communication data, and the low power receiving module is used to receive a low power wake up signal (LP-WUS); the terminal turns on the low power receiving module in an energy-saving state to monitor LP-WUS and turns off the main communication module; when downlink data arrives, the network sends a wake-up signal to the terminal, and the terminal triggers the main communication module from off to on after a series of judgments after monitoring the wake-up signal through the low power receiving module. At this time, the low power receiving module enters the off state from the working state. The low power receiving module can be turned on continuously or intermittently, and can receive the low power wake-up signal when it is turned on.

[0053] Low-power receivers can be divided into multiple types, for example, into a first type of low-power receiver and a second type of low-power receiver, wherein the first type of low-power receiver has the ability to demodulate the first type of waveform, but does not have the ability to demodulate the second type of waveform; the second type of low-power receiver has the ability to demodulate the second type of waveform, and may have the ability to demodulate the first type of waveform, or does not have the ability to demodulate the first type of waveform; for example, the first type of waveform is an OOK signal waveform, and the second type of waveform is an orthogonal frequency division multiplex (OFDM) signal waveform.

[0054] The structure of low-power receivers can be divided into many types, such as receivers based on RF envelope detection, receivers based on intermediate frequency envelope detection, or receivers based on zero intermediate frequency baseband envelope detection. Low-power receivers with these structures usually have low power consumption and can at least be used for demodulation of on-off keying signals. In addition, these low-power receivers can add modules for demodulating frequency-shift keying (FSK) signals to support FSK signal demodulation. The low-power receiver structure that supports OFDM signal detection has at least some modules that are different from the above-mentioned receiver structure, and the signal processing can be sequence correlation processing. The power consumption of the low-power receiver with this architecture is higher than that of the above-mentioned receiver, but it is also lower than that of the main receiver.

[0055] Optionally, different types of low-power receivers may monitor different signals. For example, the signals monitored by the first type of low-power receiver are signals based on the OOK waveform, which may include a wake-up signal LP-WUS based on the OOK waveform, and a synchronization signal LP-SS based on the OOK waveform. The signals monitored by the second type of low-power receiver include at least signals based on the OFDM waveform, such as an OFDM-based wake-up signal LP-WUS, and the OFDM signal is an OFDM sequence modulated on the OOK signal. The signals monitored by the second type of low-power receiver may also include synchronization signals based on OFDM, such as the primary synchronization signal (PSS), the secondary synchronization signal (SSS), etc.

[0056] The signal sending method, receiving method, apparatus, terminal and network-side equipment provided in the embodiments of the present application are described in detail below with reference to some embodiments and their application scenarios in conjunction with the accompanying drawings.

[0057] Please refer to FIG3 , which is a flowchart of a signal sending method provided in an embodiment of the present application. The method is performed by a network-side device. As shown in FIG3 , the method includes the following steps:

[0058] Step 31: The network side device sends a first signal; the first signal includes at least a complex signal sequence, the complex signal sequence carries information, or the complex signal sequence and the time position of the complex signal sequence carry information, or the complex signal sequence and the on-off keying signal carry information.

[0059] In the embodiment of the present application, the first signal is a low-power signal for reception by a low-power receiver. For example, the first signal may be a low-power wake-up signal LP-WUS or an OOK waveform-based synchronization signal LP-SS.

[0060] Optionally, the type of the low-power receiver may include at least one of the following:

[0061] Possessing the ability to demodulate on-off keying signals but not to detect complex signal sequences, such as the first type of low-power receiver mentioned above;

[0062] Possessing the ability to detect complex signal sequences, such as the second type of low-power receiver mentioned above.

[0063] Optionally, the complex signal sequence is, for example, an OFDM sequence, etc., and the information carried therein is, for example, load information and / or cyclic redundancy check (CRC) information generated based on the load information.

[0064] Therefore, with the help of the complex signal sequence included in the first signal (such as the low-power signal), it is possible to use the low-power signal to carry information, thereby improving transmission efficiency.

[0065] Optionally, if the first signal further includes an on-off keying signal (such as an OOK signal), the complex signal sequence is a sequence modulated on an OOK ON symbol of the on-off keying signal. For example, the OOK ON symbol may also be represented as an OOK ON chip.

[0066] Optionally, the time resource of the first signal may include one or more first time units, each of which includes one or more OFDM symbols, or one or more on-off keying (OOK) symbols. An OOK symbol may be an OOK on symbol or an OOK on symbol of an on-off keying signal. For example, the OOK symbol may also be represented as an OOK chip.

[0067] Optionally, the time resource of the first signal may include one or more first time units, where the first time unit carries part or all of the information of the first signal. For example, one first time unit may carry all of the information of the first signal, in which case all of the information of the first signal may be repeatedly transmitted over multiple first time units (e.g., two or three first time units); or multiple first time units may carry all of the information of the first signal together.

[0068] Optionally, the time resource of the first signal includes multiple first time units; wherein the relationship between the bit position of the information carried by the complex signal sequence on the first time unit and the bit position of the information carried by the time position of the complex signal sequence or the information carried by the on-off keying signal is determined according to the position of the first time unit in the multiple first time units. That is, for a first time unit among the multiple first time units, the relationship between the bit position of the information carried by the complex signal sequence on the first time unit and the bit position of the information carried by the time position of the complex signal sequence can be determined according to the position of the first time unit in the multiple first time units, or the relationship between the bit position of the information carried by the complex signal sequence on the first time unit and the bit position of the information carried by the on-off keying signal can be determined. In this way, it is convenient for the terminal to determine the information carried in the first signal it receives.

[0069] Optionally, the number of complex signal sequences that the first signal can carry is N, and one of the N complex signal sequences is sent in one second time unit, where N is an integer greater than or equal to 1; the second time unit is any one of the following: an OFDM symbol, an OFDM symbol portion, an OOK symbol, or an OOK ON symbol of an on-off keying signal. For example, if the first signal occupies four second time units, such as four OFDM symbols, a complex signal sequence can be sent in each OFDM symbol, and the complex signal sequence is a complex signal sequence selected from the N complex signal sequences.

[0070] Optionally, the maximum number of bits carried by the complex signal sequence on the second time unit is log2(N). For example, if N is equal to 4, the maximum number of bits carried by the complex signal sequence on the second time unit is 2.

[0071] Optionally, if the first time unit includes one or more second time units, the number of bits carried by the first time unit may satisfy any of the following:

[0072] Determined according to the number of bits carried by one or more second time units;

[0073] Determined based on: the number of bits carried by one or more of the second time units, the number of bits determined based on the time position of the second time unit or the time position of the complex signal sequence on the second time unit;

[0074] Determine based on the following: the number of bits carried by one or more of the second time units, and the number of bits carried by the OOK symbol in the first time unit.

[0075] Optionally, if the first time unit carries all bit information of the first signal, then: all bit information of the first signal may be load information carried by the first signal, or all bit information of the first signal includes load information carried by the first signal and CRC generated based on the load information.

[0076] Optionally, the information carried by the complex signal sequence in the first signal may be load information carried by the first signal; or, the information carried by the complex signal sequence in the first signal includes: load information carried by the first signal and a CRC generated based on the load information;

[0077] Alternatively, the complex signal sequence in the first signal and the information carried by the time position where the complex signal sequence is located may be the load information carried by the first signal; or, the complex signal sequence in the first signal and the information carried by the time position where the complex signal sequence is located include: the load information carried by the first signal and the CRC generated based on the load information.

[0078] Optionally, the signal sending method in this embodiment may further include:

[0079] The network-side device sends configuration information, wherein the configuration information is used to configure at least one of the following: information carried by the complex signal sequence, information carried by the complex signal sequence and the time position of the complex signal sequence, and information carried by the complex signal sequence and the on-off keying signal. This facilitates successful detection of information by the terminal.

[0080] Optionally, the first signal may correspond to a single transmission or multiple transmissions, that is, the first signal may carry information that is transmitted once or multiple times. In this way, transmission efficiency may be improved by corresponding to multiple transmissions.

[0081] Optionally, when the first signal corresponds to multiple transmissions, a first time unit or a second time unit may carry only part or all of the information of a single transmission, or a first time unit or a second time unit may carry part or all of the information of multiple transmissions.

[0082] Optionally, the complex signal sequence in the first signal may include but is not limited to a complex sequence determined according to at least one of the following: an M sequence, a ZC sequence, a gold sequence, and a Constant Amplitude Zero Auto Correlation (CAZAC) sequence.

[0083] Optionally, the complex signal sequence in the first signal may include but is not limited to a sequence determined by a real or complex sequence generated according to at least two of the following (such as multiplication operations, which are not limited to this): M sequence, ZC sequence, gold sequence, CAZAC sequence.

[0084] It should be noted that the M sequence or the gold sequence can be unipolar, such as each element has a value of 0 or 1, or bipolar, such as each element has a value of ±1. Preferably, the multiplication of the two sequences can be the Kronecker product of the two sequences. For example, one sequence is a ZC sequence with a length of 12, and the other sequence is [1 1 1]. After the Kronecker product, the two sequences become a complex sequence with a length of 36. The complex sequence can be an upsampled sequence.

[0085] Optionally, the complex signal sequence in the first signal may be generated according to a constellation point corresponding to at least one of the following modulation modes: binary phase shift keying (BPSK), pi / 2 BPSK, quadrature phase shift keying (QPSK), 16-quadrature amplitude modulation (QAM), 64QAM, 256QAM, 1024QAM, 4096QAM, etc. The specific generation method may be determined based on demand and is not limited thereto.

[0086] Please refer to FIG4 , which is a flowchart of a signal receiving method provided in an embodiment of the present application. The method is executed by a terminal. As shown in FIG4 , the method includes the following steps:

[0087] Step 41: The terminal receives a first signal;

[0088] Step 42: The terminal determines the information carried by the first signal based on the first information; the first information includes any one of the following items: a complex signal sequence in the first signal, a complex signal sequence in the first signal and a time position of the complex signal sequence, a complex signal sequence in the first signal and an on-off keying signal.

[0089] In this embodiment of the present application, the first signal is a low-power signal for reception by a low-power receiver. For example, the first signal may be a low-power wake-up signal LP-WUS or an OOK waveform-based synchronization signal LP-SS. The information may also be referred to as an information bit.

[0090] Optionally, the type of the low-power receiver may include at least one of the following:

[0091] Possessing the ability to demodulate on-off keying signals but not to detect complex signal sequences, such as the first type of low-power receiver mentioned above;

[0092] Possessing the ability to detect complex signal sequences, such as the second type of low-power receiver mentioned above.

[0093] Optionally, the receiving of the first signal may include: the terminal using a low-power receiver to receive the first signal. For example, the low-power receiver has the ability to detect a complex signal sequence.

[0094] Optionally, the complex signal sequence is, for example, an OFDM sequence, etc., and the information carried therein is, for example, load information and / or cyclic redundancy check CRC information generated based on the load information.

[0095] Therefore, with the help of the complex signal sequence included in the first signal (such as the low-power signal), it is possible to use the low-power signal to carry information, thereby improving transmission efficiency.

[0096] Optionally, if the first signal includes an on-off keying signal (such as an OOK signal), the complex signal sequence may be a sequence modulated on an OOK on symbol of the on-off keying signal.

[0097] Optionally, the time resource of the first signal may include one or more first time units, the first time unit including one or more OFDM symbols, or the first time unit including one or more on-off keying signal symbols OOK symbols. An OOK symbol may be an OOK on symbol or an OOK off symbol of an on-off keying signal.

[0098] Optionally, the time resource of the first signal may include one or more first time units, where the first time unit carries part or all of the information of the first signal. For example, one first time unit may carry all of the information of the first signal, in which case all of the information of the first signal may be repeatedly transmitted over multiple first time units (e.g., two or three first time units); or multiple first time units may carry all of the information of the first signal together.

[0099] Optionally, if the time resource of the first signal includes multiple first time units, then for a certain first time unit among the multiple first time units, the relationship between the bit position of the information carried by the complex signal sequence on the first time unit and the bit position of the information carried by the time position of the complex signal sequence can be determined based on the position of the first time unit among the multiple first time units, or the relationship between the bit position of the information carried by the complex signal sequence on the first time unit and the bit position of the information carried by the on-off keying signal can be determined. In this way, it is convenient for the terminal to determine the information carried in the first signal it receives.

[0100] Optionally, if the time resource of the first signal includes multiple first time units, the receiving the first signal may include:

[0101] The terminal receives a first signal over the plurality of first time units;

[0102] The process of determining the information carried by the first signal based on the first information may include:

[0103] The terminal determines, based on the position of the first time unit in the multiple first time units, a first relationship between a bit position of information carried by the complex signal sequence on the first time unit and a bit position of information carried by the time position of the complex signal sequence, or determines a second relationship between a bit position of information carried by the complex signal sequence on the first time unit and a bit position of information carried by the on-off keying signal;

[0104] The terminal determines the information carried in the first time unit based on the complex signal sequence in the first time unit, the time position of the complex signal sequence, and the first relationship; or determines the information carried in the first time unit based on the complex signal sequence in the first time unit and the on-off keying signal, and the second relationship. This facilitates the terminal to determine the information carried in the received first signal.

[0105] Optionally, the number of complex signal sequences that can be carried by the first signal is N, and one of the N complex signal sequences is sent in one second time unit, where N is an integer greater than or equal to 1; the second time unit is any one of the following: an OFDM symbol, an OFDM symbol portion, an OOK symbol, or an OOK ON symbol of an on-off keying signal. For example, if the first signal occupies four second time units, such as four OFDM symbols, then a complex signal sequence can be sent in each OFDM symbol, and the complex signal sequence is a complex signal sequence selected from the N complex signal sequences.

[0106] Optionally, the maximum number of bits carried by the complex signal sequence on the second time unit is log2(N).

[0107] Optionally, if the first time unit includes one or more second time units, the number of bits carried by the first time unit may satisfy any of the following:

[0108] Determined according to the number of bits carried by one or more second time units;

[0109] Determined based on: the number of bits carried by one or more of the second time units, the number of bits determined based on the time position of the second time unit or the time position of the complex signal sequence on the second time unit;

[0110] Determine based on the following: the number of bits carried by one or more of the second time units, and the number of bits carried by the OOK symbol in the first time unit.

[0111] Optionally, if the first time unit carries all bit information of the first signal, then: all bit information of the first signal may be load information carried by the first signal, or all bit information of the first signal includes load information carried by the first signal and CRC generated based on the load information.

[0112] Optionally, the information carried by the complex signal sequence in the first signal may be load information carried by the first signal; or, the information carried by the complex signal sequence in the first signal includes: load information carried by the first signal and a CRC generated based on the load information;

[0113] Alternatively, the complex signal sequence in the first signal and the information carried by the time position where the complex signal sequence is located may be the load information carried by the first signal; or, the complex signal sequence in the first signal and the information carried by the time position where the complex signal sequence is located include: the load information carried by the first signal and the CRC generated based on the load information.

[0114] Optionally, the above process of determining the information carried by the first signal based on the first information may include: the terminal determines the information carried by the first signal based on the first information according to at least one of the network configuration, protocol agreement and predefined rules, that is, determining whether to determine the information carried by the first signal based on the complex signal sequence, or to determine the information carried by the first signal based on the complex signal sequence and its time position, or to determine the information carried by the first signal based on the complex signal sequence and the on-off keying signal.

[0115] Optionally, the first signal may correspond to a single transmission or multiple transmissions, that is, the first signal may carry information that may be transmitted once or multiple times. In this way, transmission efficiency may be improved by corresponding to multiple transmissions.

[0116] Optionally, when the first signal corresponds to multiple transmissions, a first time unit or a second time unit may carry only part or all of the information of a single transmission, or a first time unit or a second time unit may carry part or all of the information of multiple transmissions.

[0117] Optionally, the receiving of the first signal may include: the terminal detecting a complex signal sequence in the first signal over a second time unit;

[0118] The process of determining the information carried by the first signal based on the first information may include any of the following:

[0119] The terminal determines, based on the detected complex signal sequence, the information bits carried by the second time unit;

[0120] The terminal determines, based on the detected complex signal sequence and the time position of the complex signal sequence, the information bits carried by the second time unit;

[0121] The terminal determines the information bits carried on the second time unit according to the detected complex signal sequence and the on-off keying signal.

[0122] Optionally, if any complex signal sequence is not detected in the second time unit, the second time unit does not carry any information, that is, the number of information bits is 0.

[0123] Optionally, if any complex signal sequence is not detected in the second time unit, the second time unit corresponds to an OOK off symbol of the on-off keying signal.

[0124] Optionally, if the network side does not configure the first signal to use Manchester encoding, the above-mentioned determining the information carried by the first signal based on the first information may include: the terminal determining the information carried by the first signal based on the complex signal sequence in the first signal.

[0125] Alternatively, if the network side configures the first signal to use Manchester encoding, the above-mentioned determination of the information carried by the first signal based on the first information may include: the terminal determines the information carried by the first signal based on the complex signal sequence in the first signal and the time position of the complex signal sequence; or determines the information carried by the first signal based on the complex signal sequence and the on-off keying signal in the first signal.

[0126] Optionally, if the network side does not configure the first time unit, this first time unit may be specifically as described above. The above-mentioned determination of the information carried by the first signal based on the first information may include: the terminal determines the information carried by the first signal based on the complex signal sequence in the first signal.

[0127] Alternatively, if the network side configures a first time unit, this first time unit may be specifically as described above. The above-mentioned determination of the information carried by the first signal based on the first information may include: the terminal determines the information carried by the first signal based on the complex signal sequence in the first signal and the time position of the complex signal sequence; or determines the information carried by the first signal based on the complex signal sequence and the on-off keying signal in the first signal.

[0128] Optionally, if the network side does not configure an on-off keying signal (such as an OOK signal), the above-mentioned determination of the information carried by the first signal based on the first information may include: the terminal determines the information carried by the first signal based on the complex signal sequence in the first signal.

[0129] Alternatively, if the network side configures an on-off keying signal, the above-mentioned determination of the information carried by the first signal based on the first information may include: the terminal determines the information carried by the first signal based on the complex signal sequence in the first signal and the time position of the complex signal sequence; or determines the information carried by the first signal based on the complex signal sequence and the on-off keying signal in the first signal.

[0130] The present application is described below with reference to specific embodiments.

[0131] In an embodiment of the present application, a network side device (such as a network node) sends a first signal, such as LP-WUS (the following description takes LP-WUS as an example, but it can also be extended to other low-power signals such as LP-SS, etc.), which is used to wake up the main receiver through the low-power receiver of the terminal. The first signal sent by the network side device can be an on-off keying signal (OOK signal). In addition, the first signal can also carry a complex signal sequence; for example, the complex signal sequence is modulated on the ON symbol of the OOK signal, and the complex signal sequence is, for example, a time domain signal before discrete Fourier transform (DFT); or, the complex signal sequence is modulated on an OFDM symbol, and the complex signal sequence is, for example, a frequency domain signal before inverse fast Fourier transform (IFFT). Preferably, the complex signal sequence in the first signal is a complex sequence determined according to at least one item or a sequence determined by a real number or complex sequence generated (such as multiplied) according to at least two of the following: M sequence, ZC sequence, gold sequence, CAZAC sequence. In addition, the complex signal sequence may include a sequence generated by constellation points corresponding to one or more of the following modulation modes: BPSK, pi / 2BPSK, QPSK, 16QAM, 64QAM, 256QAM, 1024QAM, 4096QAM, etc. The M sequence or gold sequence may be a unipolar representation, such as each element taking a value of 0 or 1, or a bipolar representation, such as each element taking a value of ±1. Preferably, the multiplication of the two sequences may be the Kronecker product of the two sequences, for example, one of the sequences is a ZC sequence of length 12, and the other sequence is [1 1 1]. After the Kronecker product, the two sequences become a complex sequence of length 36. Preferably, the complex sequence may be an upsampling of a sequence. For the sake of convenience of description, the complex signal sequence is represented by an OFDM sequence in the following related description, but is not limited thereto.

[0132] In an optional embodiment, within a first time unit, the number of bits of the first signal carried by the OOK symbol and the number of bits carried by the OFDM sequence may be different. For example, within a first time unit, the OOK symbol carries 1 information bit, and N1 OFDM sequences carry X information bits, where N1 ≥ 1 and X > 1.

[0133] Assuming that a first time unit includes Nof OFDM symbols, or includes No OOK chips, No or Nof can be predefined by the network configuration or protocol, such as Nof=1, or No=1; or, No or Nof can be k times the coding length, k is a positive integer (for example, k=1); or, No can be k times the number of OOK chips required to carry 1 bit of information bit, k is a positive integer (for example, k=1); or, Nof can be k times the number of OFDM symbols corresponding to the number of OOK chips required to carry 1 bit of information bit, k is a positive integer (for example, k=1); or, the first time unit can carry all information bits Xinf of the first signal, which information bits include CRC or do not include CRC.

[0134] For example, the network side device configures a first time unit including Nof OFDM symbols, then the OFDM sequence in the Nof OFDM symbols may carry all the information bits Xinf of the first signal, or the OFDM sequence in the Nof OFDM symbols and the OOK symbol may carry all the information bits Xinf of the first signal, or the OFDM sequence in the Nof OFDM symbols and the position of the second time unit where the OFDM sequence is located may carry all the information bits Xinf of the first signal.

[0135] For another example, the 1-bit information in the first signal is encoded using a line code of length L, such as Manchester encoding, to obtain L bits. If an OFDM symbol carries only one OOK chip, the first time unit may be L OFDM symbols, i.e., L OOK chips. If an OFDM symbol carries M2 (M2>1) OOK chips, the first time unit may be L OOK chips, or L / M2 OFDM symbols. In addition, the 1-bit information may also be encoded using a channel code of length L1, such as repetition coding, polar code, RM coding, or other coding methods, without limitation.

[0136] For another example, 1 bit of information in the first signal undergoes channel coding of length L1 and line coding of length L, resulting in L1*L bits. If an OFDM symbol carries only one OOK chip, the first time unit may be L1*L OFDM symbols, i.e., L1*L OOK chips. If an OFDM symbol carries M2 (M2>1) OOK chips, the first time unit may be L1*L OOK chips, or L1*L / M2 OFDM symbols.

[0137] For another example, if the information in the first signal is not encoded, the first time unit may be an OFDM symbol or an OOK chip. For another example, regardless of whether the information in the first signal is encoded or not, the first time unit may be an OFDM symbol or an OOK chip.

[0138] In an optional embodiment, within a first time unit, if the set of sequences transmittable by the network device includes N1 OFDM sequences (denoted as first-type OFDM sequences) carrying X information bits, the network device may select one of the N1 OFDM sequences for transmission. For example, the N1 first-type OFDM sequences may be permutations and combinations of time-domain sequences obtained after the IFFT of the transmitting end of each OFDM symbol within the first time unit.

[0139] In an optional embodiment, if the low-power receiver used by the terminal does not have the ability to detect OFDM sequences but only has the ability to detect OOK signals, that is, a first type of low-power receiver is used, the terminal can only demodulate M1 / L information bits in a first time unit, where M1 is the number of OOK chips in a first time unit.

[0140] In an optional embodiment, if the low-power receiver used by the terminal has the ability to detect OFDM sequences, that is, a second type of low-power receiver is used, the number of bits demodulated by the terminal in a first time unit can be determined according to the following implementation method one or implementation method two.

[0141] Implementation method 1:

[0142] For example, a first time unit can carry X=M*log2(N) information bits, where N is the number of OFDM sequences in an OOK ON symbol, and M is the number of OOK ON symbols in a first time unit. The network-side device selects one OFDM sequence from N OFDM sequences in an OOK ON symbol and sends it. According to a special case, the first time unit is an OOK chip, which can be an OOK ON symbol or an OOK OFF chip, so M=1 or M=0; in the OOK ON symbol, the network-side device selects one OFDM sequence from the N OFDM sequences and sends it; in the OOK OFF chip, the network-side device does not send an OFDM sequence; then, a first time unit can carry log2(N) information bits or 0 bits of information.

[0143] In an optional embodiment, the Xinf information bits carried by the LP-WUS may be carried by one or more first time units in the LP-WUS time resource in chronological order. For example, the X bits carried by the first first time unit are the X bits of the most significant bit (MSB) or the least significant bit (LSB) among the Xinf information bits. Taking Xinf=8 as an example, if X=4 bits, the first first time unit may carry the first 4 bits of the 8-bit information, and the second first time unit may carry the last 4 bits of the 8-bit information; or, the first first time unit may carry the last 4 bits of the 8-bit information, and the second first time unit may carry the first 4 bits of the 8-bit information.

[0144] In an optional embodiment, the first time unit may include one or more second time units, and the second time unit may be an OOK symbol, such as an OOK ON symbol, or a part of an OFDM symbol. For example, the time resource of an OFDM symbol can be divided into M2 equal-length sub-parts, and the second time unit is a sub-part. For the convenience of description below, the second time unit takes the OOK symbol as an example, but is not limited to this. According to one implementation method, the signal generation at the transmitting end includes DFT / LS and IFFT operations (which may be equivalent operations to achieve the same function). Before DFT / LS, one sequence of N second-class OFDM sequences can be sent in an OOK ON symbol; for example, N=4, then an OOK ON symbol can carry 2 bits of information. Assuming that M2 is the number of OOK symbols in an OFDM symbol, if M2>1, such as M2=4, then M on2 =M2 / 2=2, which is the number of OOK ON symbols in one OFDM symbol. on2 The permutation and combination of the second type of OFDM sequence sent on OOK ON symbols is equivalent to N Mon2 If a first time unit includes Nof OFDM symbols, then a first time unit includes M=M on2 *No OOK ON symbols; if the second time unit is an OOK ON symbol, then M represents the number of second time units included in a first time unit; if the second time unit is an OOK symbol and LP-WUS uses Manchester encoding, then 2*M represents the number of second time units included in a first time unit; then, there are N in a first time unit. (Mon2*Nof) OFDM sequences, or NM OFDM sequences; an OFDM sequence of a first time unit can carry M*log2(N) information bits.

[0145] In an optional embodiment, the first time unit and the second time unit are the same, and the first time unit and the second time unit may not be distinguished, for example, both are an OOK symbol, or both are an OFDM symbol.

[0146] In an optional embodiment, assuming that the original information sent by the LP-WUS is [0 1 0 0 0 0 1 1], Xinf = 8 bits, one OFDM symbol carries M2 = 4 OOK symbols, and the Manchester code length L = 2, then if 8 bits of information are carried using OOK symbols, 4 OFDM symbols are required, for a total of 16 OOK symbols, where each bit requires 2 OOK symbols, as shown in Figure 5. Assuming that the length of a first time unit is determined based on the code length, that is, a first time unit is 2 OOK symbols, then the number M of OOK ON symbols in a first time unit is 1. If 8 bits of information are carried using an OFDM sequence, the number of second-type OFDM sequences N = 4, and the four sequences are S1, S2, S3, and S4, then: a first time unit can carry M*log2(N) = 2 bits using the OFDM sequence, for example, S1 corresponds to 00, S2 corresponds to 01, S3 corresponds to 10, and S4 corresponds to 11. The first two OFDM symbols can then carry 8 bits of information. These 8 bits can be transmitted repeatedly in the last two OFDM symbols, as shown in Figure 5. Alternatively, the network device can send other signals in the last two OFDM symbols as needed, but this cannot affect the OOK waveform.

[0147] Accordingly, a terminal based on the second type of low-power receiver can detect an OFDM sequence in each first time unit of the LP-WUS. For example, in each OOK symbol in a first time unit, four OFDM sequence detections are attempted: if an OFDM sequence is detected in an OOK symbol, two bits of information are obtained; if no OFDM sequence is detected in an OOK symbol, no bit of information is obtained.

[0148] In another optional embodiment, assuming that the length of a first time unit is 1 OOK symbol, and the number M of OOK ON symbols in a first time unit is equal to 1, then: a first time unit can carry M*log2(N)=2 bits through the OFDM sequence. Accordingly, the terminal based on the second type of low-power receiver can detect the OFDM sequence in each first time unit of the LP-WUS, and attempt 4 OFDM sequence detections in each OOK symbol: if an OFDM sequence is detected in an OOK symbol, 2 bits of information can be obtained; if no OFDM sequence is detected in an OOK symbol, there is no bit information.

[0149] According to another implementation, the signal generation at the transmitting end may not include DFT / LS operations. In one OFDM symbol, one of N OFDM sequences (denoted as the third type of OFDM sequence) may be sent to carry log2(N) information bits. The third type of OFDM sequence is a frequency domain sequence before IFFT or a time domain sequence after IFFT of an OFDM symbol. If a first time unit includes Nof OFDM symbols, it is equivalent to having at most N OFDM symbols in a first time unit. Nof Or, if a first time unit includes M (M = M on2 ) OOK ON symbols, which is equivalent to sending M OFDM symbols of the third type OFDM sequence, which is equivalent to having at most N in a first time unit. M A third type of OFDM sequence can carry M*log2(N) bits.

[0150] In an optional embodiment, assuming that the original information sent by the LP-WUS is [0 1 0 0 0 0 1 1], Xinf = 8 bits, one OFDM symbol carries / includes M2 = 1 OOK symbol, and the Manchester code length L = 2, then, if 8 bits of information are carried via OOK symbols, 16 OFDM symbols are required, a total of 16 OOK symbols, where each bit requires 2 OOK symbols (i.e., 2 OFDM symbols), as shown in Figure 6. Assuming that the length of a first time unit is one OFDM symbol, if 8 bits of information are carried via an OFDM sequence, the number of third-type OFDM sequences N = 4, and the four sequences are S1, S2, S3, and S4, then: the number of bits carried by a first time unit is M*log2(N) = 2 bits. Therefore, the first four OFDM symbols can carry 8 bits of information. The LP-WUS can repeatedly transmit these 8 bits of information, or the network-side device can send other signals as needed, but this cannot affect the OOK waveform.

[0151] Accordingly, a terminal based on the second type of low-power receiver can detect an OFDM sequence in each first time unit of the LP-WUS. For example, four OFDM sequence detections are attempted in each OFDM: if an OFDM sequence is detected, 2 bits of information are obtained; if no OFDM sequence is detected, 0 bits of information are obtained, i.e., no bit information is obtained.

[0152] In the above description, the terminal based on the second type of low-power receiver can use envelope detection to determine the OOK ON symbol or OOK OFF symbol, or determine it based on whether an OFDM sequence is detected. For example, if a sequence is detected, it is an OOK ON symbol, and if a sequence is not detected, it is an OOK OFF symbol. Alternatively, the terminal based on the second type of low-power receiver may not identify the OOK ON symbol or OOK OFF symbol, and only needs to determine whether the number of bits carried is 0 based on whether a sequence is detected.

[0153] For ease of understanding, the above description uses the concept of a first time unit. However, in a specific implementation, the network-side device may not be configured with a first time unit, or the protocol may not define a first time unit. For example, the network-side device may only need to configure an OFDM sequence in a second time unit, or the protocol may predefine an OFDM sequence in a second time unit, without involving the first time unit.

[0154] Implementation method 2:

[0155] Unlike implementation method 1, in implementation method 2, the number of information bits carried by a first time unit is X1=X+Y, where X is the number of information bits determined according to the OFDM sequence, and Y is the number of information bits determined according to the time position of the second type of OFDM sequence detected or the position of the OOK ON symbol, or Y is the number of information bits carried by the OOK symbol. The X bits of information can be determined according to implementation method 1 above and will not be further described here.

[0156] Compared to implementation method 1, implementation method 2 can carry more information bits in the same time resources. Terminals based on the second type of low-power receiver can obtain all bit information of the LP-WUS in a shorter time, thereby saving power. However, when using implementation method 2, the calculation of the bits in each first time unit by terminals based on the second type of low-power receiver is more complex than implementation method 1 because it is also necessary to determine the bits based on the time position of the detected second type of OFDM sequence or the position of the OOK ON symbol, or the terminal must be able to detect the information carried by the OOK symbol.

[0157] In one implementation, the Y bit can be determined based on the time position of the second type OFDM sequence or the position of the OOK ON symbol when the second type OFDM sequence is detected. For example, if the code length is L and the number of OOK symbols in a first time unit is M1, then in the first time unit, the permutation and combination of the time position of the second type OFDM sequence or the position of the OOK ON symbol when the second type OFDM sequence is detected is 2 (M1 / L) , can carry Y=log2(2 (M1 / L) ) = M1 / L bits. Taking Manchester encoding with a length of L = 2 as an example, for every two OOK symbols or for every two second time units (one second time unit is one OOK symbol), the time position of the second-type OFDM sequence or the OOK ON symbol detected at the first position and the second position represents two values ​​of one bit, such as 0 or 1. Assuming that the number of OOK symbols in a first time unit is M1 = 4, then Y = 2 bits.

[0158] In another implementation, Y bits are information bits carried by the OOK symbol. Similarly, Y=M1 / L.

[0159] In an optional embodiment, the Xinf information bits carried by the LP-WUS also need to determine the positions of the X bits and Y bits in the Xinf bits. Taking the example of the first time unit being able to carry all the information bits Xinf of the LP-WUS, that is, Xinf=X1=X+Y, the following describes how to determine the positions of the X bits and Y bits in each first time unit in the Xinf bits. Assuming that the time resources of the LP-WUS include Z first time units, then in the zth time unit, the Y bits can be the (z-1)*Y+1th to z*Yth bits of the MSB in Xinf or the (z-1)*Y+1th to z*Yth bits of the LSB, and the X bits are the remaining bits in Xinf. The X bits can be carried by the OFDM sequences in each second time unit in the first time unit, and the X bits correspond to the time sequence of the second time units.

[0160] In an optional embodiment, the network-side device may configure the first time unit, for example, the number of OFDM symbols or OOK symbols occupied by the first time unit; or, the network-side device may configure the value of Y in the first time unit, for example, the number of bits Y carried by the OOK symbol in a first time unit, then: the length of the first time unit may be determined based on Y and the coding length, such as the number of OOK symbols or OFDM symbols occupied; or, the network-side device may configure the number of bits X carried by the OFDM sequence of the first time unit, then: the length of the first time unit may be determined based on X and the number of OFDM sequences of an OOK symbol. Alternatively, the length of the first time unit may be determined according to a predefined rule, for example, the number of bits Y carried by the OOK symbol of the first time unit is Xinf / 2, or the first time unit is an OFDM symbol, or the first time unit is half of the LP-WUS time resource.

[0161] In an optional embodiment, assuming that the original information sent by LP-WUS is [0 1 0 0 0 0 1 1], Xinf = 8 bits, one OFDM symbol carries M2 = 4 OOK symbols, and the Manchester code length L = 2, then if 8 bits of information are carried by OOK symbols, 4 OFDM symbols are required, a total of 16 OOK symbols, where each bit requires 2 OOK symbols. Assume that the number of the second type of OFDM sequences N = 8, and the 8 sequences are S1, S2, S3, S4, S5, S6, S7 and S8 respectively; the network side device configures the length of the first time unit to be 1 OFDM symbol, and the OOK ON in the first time unit is 16. The symbol number M is equal to 2, the bits carried by the OFDM sequence detection are represented by O2, and the length is X=M*log2(N)=6 bits, and the bits carried by the OFDM sequence position are represented by O1, and the length is Y=M1 / L=2 bits. As shown in FIG7 , it can be: in OFDM symbol 1, the order of the 8-bit information is [O1, O2]; in OFDM symbol 2, the order of the 8-bit information is [O2(1), O2(2), O1, O2(3), …O2(6)]; in OFDM symbol 3, the order of the 8-bit information is [O2(1), O2(2), O2(3), O2(4), O1, O2(5), O2(6)]; in OFDM symbol 4, the order of the 8-bit information is [O2, O1].

[0162] The terminal based on the second type of low-power receiver can detect the OFDM sequence and the time position of the OFDM sequence in each first time unit of the LP-WUS, and determine the bit positions of the X bit and the Y bit according to the position of the first time unit in the time resource of the LP-WUS. For example, in the zth time unit, the Y bit is the (z-1)*Y+1 to z*Y bits of the MSB in Xinf or the (z-1)*Y+1 to z*Y bits of the LSB, and the X bit is the remaining bits in Xinf.

[0163] In an optional embodiment, as shown in Figure 7, LP-WUS can repeat the transmission of 8 bits of information four times. In another embodiment, the number of repeated transmissions using LP-WUS can be less than four; for example, only the 8 bits of information are transmitted in the first OFDM symbol, and in the other three OFDM symbols, the OFDM sequence is not transmitted or other signals are sent as required, without affecting the OOK waveform.

[0164] In an optional embodiment, as shown in FIG8 , assuming that the original information sent by LP-WUS is [0 1 0 0 0 0 1 1], Xinf = 8 bits, one OFDM symbol carries M2 = 1 OOK symbol, and the Manchester code length L = 2, then, if 8 bits of information are carried by OOK symbols, 16 OFDM symbols are required, a total of 16 OOK symbols, where each bit requires 2 OOK symbols, i.e., 2 OFDM symbols. Assuming that the number of second or third type OFDM sequences N = 8, and the 8 sequences are S1, S2, S3, S4, S5, S6, S7 and S8, and the network side device configures the length of the first time unit to be 4 OFDM symbols, the OOK ON in a first time unit is 4 OFDM symbols. The number of symbols M is 2, the bits carried by OFDM sequence detection are represented by O2, and the length is X = M*log2(N) = 6 bits, the bits carried by OFDM sequence position are represented by O1, and the length is Y = M1 / L = 2 bits, then it can be: in OFDM symbols 1 to 4, the order of 8-bit information is [O1, O2]; in OFDM symbols 5 to 8, the order of 8-bit information is [O2(1), O2(2), O1, O2(3), ...O2(6)]; in OFDM symbols 9 to 12, the order of 8-bit information is [O2(1), O2(2), O2(3), O2(4), O1, O2(5), O2(6)]; in OFDM symbols 13 to 16, the order of 8-bit information is [O2, O1]. The terminal based on the second type of low-power receiver can detect the OFDM sequence and the time position of the OFDM sequence in each first time unit of the LP-WUS, and determine the bit positions of the X bit and the Y bit according to the position of the first time unit in the time resource of the LP-WUS. For example, in the zth time unit, the Y bit is the (z-1)*Y+1 to z*Y bits of the MSB in Xinf or the (z-1)*Y+1 to z*Y bits of the LSB, and the X bit is the remaining bits in Xinf.

[0165] Another optional embodiment, as shown in FIG. 9, assumes that the original information sent by LP-WUS is [0 1 0 0 0 0 1 1], Xinf = 8 bits, one OFDM symbol carries M2 = 1 OOK symbol, and the Manchester coding length L = 2. Then, if 8 bits of information are carried by OOK symbols, 16 OFDM symbols are required, a total of 16 OOK symbols, where each bit requires 2 OOK symbols, that is, 2 OFDM symbols. Assume that the number N of the second or third type of OFDM sequences is 4, and the 4 sequences are S1, S2, S3, and S4 respectively, and the network-side device can configure the value of Y (for example, Y = 4 is the number of information bits carried by the OOK symbol), or the network-side device configures the length of the first time unit. Assume that the length of the first time unit is 8 OFDM symbols, M = 4 is the number of OOK ON symbols in a first time unit, the OFDM sequence in a first time unit carries Xinf = 8 bits, and X = Xinf - Y = 4 bits. In a first time unit, the OFDM sequence can carry X1 = M * log2(N) = 8 bits of information, X < X1. Then, 4 bits of information can be carried in the first 2 OOK ON symbols in this first time unit. Optionally, in the last 2 OOK ON symbols in a first time unit, the information in O1 can be sent, as shown in FIG. 10. Alternatively, without restricting the transmission of the OFDM sequence in the last 2 OOK ON symbols, the OFDM sequence can not be transmitted or other signals can be sent according to requirements, but the OOK waveform cannot be affected.

[0166] In an alternative embodiment, as shown in FIG. 11, assume that the original information sent by LP-WUS is [0 1 0 0 0 0 1 1], Xinf = 8 bits, one OFDM symbol carries M2 = 1 OOK symbol, and the Manchester coding length L = 2. Then, if 8 bits of information are carried by OOK symbols, 16 OFDM symbols are required, a total of 16 OOK symbols, where each bit requires 2 OOK symbols, that is, 2 OFDM symbols. Assume that the number N of the second or third type of OFDM sequences is 4, and the 4 sequences are S1, S2, S3, and S4 respectively, and the network-side device can configure the value of Y (for example, Y = 3 is the number of information bits carried by OOK symbols), or the network-side device configures the length of the first time unit. Assume that the length of the first time unit is 6 OFDM symbols, and M = 3 is the number of OOK ON symbols in one first time unit. One first time unit carries Xinf = 8 bits of information carried by OFDM sequences, and X = Xinf - Y = 5 bits. In one first time unit, the OFDM sequence can carry X1 = M * log2(N) = 6 bits of information, X < X1. Then, 1 bit of information can be carried in the last 1 OOK ON symbol of this first time unit. It can be seen that the time resource of LP-WUS is not an integer multiple of the length of the first time unit. Therefore, the length of the last first time unit is shortened to 4 OFDM symbols. In this first time unit, the transmission of the OFDM sequence in the OOK ON symbol is not limited, and the OFDM sequence can be not transmitted or other signals can be transmitted according to requirements, but the OOK waveform cannot be affected.

[0167] The terminal based on the second type of low-power receiver can detect the information carried by the OFDM sequence and the OOK symbol in each first time unit of LP-WUS. The terminal can only detect one or more complete first time units.

[0168] It should be noted that in order for the terminal to determine which method to use to determine the bits carried by the first time unit (for example, implementation method one or implementation method two, or other implementation methods), in one implementation method, it is possible to agree on which method to use. Optionally, the first signal used for the idle / inactive state of the Radio Resource Control (RRC) adopts implementation method two, and the first signal used for the RRC connected state adopts implementation method one. Optionally, the first signal used to wake up the MR to receive paging information adopts implementation method two, and the first signal used to wake up the MR to receive the Physical Downlink Control Channel (PDCCH) adopts implementation method one. Another implementation method may be that the network side device configures which method to use, or determines which method to use according to a predefined rule. For example, if the network side device configures the first signal to use Manchester encoding, implementation method two is used, otherwise implementation method one is used. For another example, if the network side device configures the first time unit, implementation method two is used, otherwise implementation method one is used.

[0169] According to any of the above implementations, whether the bit information carried by the OFDM sequence includes a CRC can be predefined by network-side device configuration or protocol. For example, although the LP-WUS carries payload information and CRC bits generated based on the payload information through OOK symbols, the bit information carried by the OFDM sequence can be predefined based on network-side device configuration or protocol to include only the payload information and not the CRC bits.

[0170] For example, in the examples of FIG6 and FIG8 to FIG11, it is assumed that the information bits Xinf carried by an LP-WUS through OOK symbols and / or OFDM sequences are the same, both include payload information, or both include payload information and CRC bits generated based on the payload information.

[0171] For another example, the information bits carried by the two methods are different. The information bits carried by the OOK symbol include payload information and CRC bits generated based on the payload information, that is, the OOK symbol carries Xinf and CRC bits, where Xinf represents the bits of payload information, but the information bits carried by the OFDM sequence only include the payload Xinf.

[0172] Optionally, if the bit information carried by the OFDM sequence includes only load information but not CRC bits, the terminal based on the second type of low-power receiver may only detect the first time unit containing the load information but not the first time unit containing the CRC.

[0173] Based on an example of implementation method 1, as shown in Figure 12, assuming the original information payload sent by the LP-WUS is [0 1 0 0 0 0 1 1], Xinf = 8 bits, and Xcrc = a 4-bit CRC. One OFDM symbol carries M2 = 4 OOK symbols, and the Manchester code length L = 2. Therefore, if the Xinf + Xcrc bits of information are carried using OOK symbols, 6 OFDM symbols are required, for a total of 12 OOK symbols, where each bit requires 2 OOK symbols. Assuming that a first time unit is an OOK symbol, and the number of OOK ON symbols in the first time unit is M = 1 or M = 0, if 8 bits of information are carried using an OFDM sequence, the number of second-type OFDM sequences is N = 4, and the four sequences are S1, S2, S3, and S4. Then, one first time unit can carry M*log2(N) = 2 bits using the OFDM sequence, for example, S1 corresponds to 00, S2 corresponds to 01, S3 corresponds to 10, and S4 corresponds to 11. The first two OFDM symbols can carry 8 bits of information. In the last four OFDM symbols, these 8 bits can be repeated, or network equipment can send other signals as needed, without affecting the OOK waveform.

[0174] Accordingly, a terminal based on the second type of low-power receiver can detect the OFDM sequence in each first time unit of the LP-WUS to obtain Xinf = 8 bits of payload information. A terminal based on the first type of low-power receiver can obtain Xinf + Xcrc = 12 bits of information in the six OFDM symbols of the LP-WUS.

[0175] Based on an example of implementation method 2, as shown in Figure 13, assume that the original information payload sent by LP-WUS is [0 1 0 0 0 0 1 1], Xinf = 8 bits, and Xcrc = 4-bit CRC; one OFDM symbol carries M2 = 4 OOK symbols, and the Manchester code length L = 2. Then, if the Xinf + Xcrc bit information is carried by OOK symbols, 6 OFDM symbols are required, a total of 12 OOK symbols, where each bit requires 2 OOK symbols. Assume that the number of the second type of OFDM sequences N = 8, and the 8 sequences are S1, S2, S3, S4, S5, S6, S7 and S8, and the network side device configures the length of the first time unit to be 1 OFDM symbol, M = 2 is the OOK ON in the first time unit. The number of symbols, the bits carried by the OFDM sequence detection are represented by O2, with a length of X=M*log2(N)=6 bits, and the payload information bits carried by the OOK symbol are represented by O1 (excluding CRC), with a length of Y=M1 / L=2 bits. Then: in OFDM symbol 1, the order of the 8-bit information is =[O1, O2]; in OFDM symbol 2, the order of the 8-bit information is =[O2(1), O2(2), O1, O2(3), ...O2(6)]; in OFDM symbol 3, the order of the 8-bit information is =[O2(1), O2(2), O2(3), O2(4), O1, O2(5), O2(6)]; in OFDM symbol 4, the order of the 8-bit information is =[O2, O1]. In OFDM symbols 5 and 6, the OFDM sequence carries the 8-bit information of the payload, as shown in Figure 13. In these two OFDM symbols, since there is no O1, the 8-bit information is completely carried by the OFDM sequence. Alternatively, in OFDM symbols 5 and 6, the network-side device can send other signals as needed, but it cannot affect the OOK waveform. Accordingly, the terminal based on the second type of low-power receiver can detect the OFDM sequence in each first time unit containing load information in the LP-WUS to obtain Xinf = 8 bits of load information. The terminal may not detect the first time unit where the CRC information is located.

[0176] According to any of the above implementation methods, if the OFDM sequence repeatedly transmits information bits, in one implementation method, only part or all of the information of a single transmission can be carried within a first time unit, as shown in Figures 5, 9, and 11. In another implementation method, information from multiple repeated transmissions can be carried within a first time unit. As shown in Figure 14, based on implementation method one, an OOK ON symbol has N=8 sequences, so 3 bits of information can be carried. It can be seen that the first OOK ON symbol in OFDM symbol 2 carries the last 2 bits of the first transmission and the first bit of the second transmission. The last OOK ON symbol in OFDM symbol 3 carries the last bit of the second transmission and the first and second bits of the third transmission. The advantage of this is that more repeated transmissions can be achieved with the same resources.

[0177] According to any of the above implementations, if the LP-WUS corresponds to multiple transmissions, the multiple repeated transmissions may be payload information-level repetitions; if CRC information is required, both the payload information and the CRC information are sent. For example, if the payload information is 8 bits such as [0 1 0 0 0 0 1 1], each transmission contains 8 bits of information. Alternatively, the multiple repeated transmissions may be bit-level repetitions. For example, if the payload information is 8 bits such as [0 1 0 0 0 0 1 1], the first bit is repeated X times, followed by the second bit repeated X times, and so on until the eighth bit is repeated X times.

[0178] The signal sending method provided in the embodiment of the present application can be executed by a signal sending device. In the embodiment of the present application, the signal sending device provided in the embodiment of the present application is described by taking the signal sending method executed by the signal sending device as an example.

[0179] Please refer to FIG. 15 , which is a schematic diagram of the structure of a signal sending device provided in an embodiment of the present application. The device is applied to a network-side device. As shown in FIG. 15 , the signal sending device 150 includes:

[0180] The first sending module 151 is used to send a first signal; wherein the first signal at least includes a complex signal sequence, the complex signal sequence carries information, or the complex signal sequence and the time position of the complex signal sequence carry information, or the complex signal sequence and the on-off keying signal carry information.

[0181] Optionally, if the first signal further includes an on-off keying signal, the complex signal sequence is a sequence modulated on an on-off symbol OOK ON symbol of the on-off keying signal.

[0182] Optionally, the time resource of the first signal includes one or more first time units, the first time unit includes one or more orthogonal frequency division multiplexing OFDM symbols, or the first time unit includes one or more on-off keying signal symbols OOK symbols.

[0183] Optionally, the time resource of the first signal includes one or more first time units, and the first time units carry part or all of the information of the first signal.

[0184] Optionally, the time resources of the first signal include multiple first time units; wherein, the relationship between the bit position of the information carried by the complex signal sequence on the first time unit and the bit position of the information carried by the time position of the complex signal sequence or the information carried by the on-off keying signal is determined according to the position of the first time unit in the multiple first time units.

[0185] Optionally, the number of complex signal sequences that the first signal can carry is N, and one of the N complex signal sequences is sent in a second time unit, where N is an integer greater than or equal to 1; the second time unit is any one of the following: an OFDM symbol, an OFDM symbol part, an OOK symbol, or an on-off keying signal OOK ON symbol.

[0186] Optionally, the maximum number of bits carried by the complex signal sequence on the second time unit is log2(N).

[0187] Optionally, the first time unit includes one or more second time units, and the number of bits carried by the first time unit satisfies any one of the following:

[0188] Determined according to the number of bits carried by one or more second time units;

[0189] Determined based on: the number of bits carried by one or more of the second time units, the number of bits determined based on the time position of the second time unit or the time position of the complex signal sequence on the second time unit;

[0190] Determine based on the following: the number of bits carried by one or more of the second time units, and the number of bits carried by the OOK symbol in the first time unit.

[0191] Optionally, the first time unit carries all bit information of the first signal, and all bit information of the first signal is load information carried by the first signal, or all bit information of the first signal includes load information carried by the first signal and a cyclic redundancy check CRC generated based on the load information.

[0192] Optionally, the information carried by the complex signal sequence is load information carried by the first signal; or, the information carried by the complex signal sequence includes: load information carried by the first signal and a CRC generated based on the load information;

[0193] Alternatively, the information carried by the complex signal sequence and the time position where the complex signal sequence is located is the load information carried by the first signal; or, the information carried by the complex signal sequence and the time position where the complex signal sequence is located includes: the load information carried by the first signal and the CRC generated based on the load information.

[0194] Optionally, the signal sending device 150 further includes:

[0195] The second sending module is used to send configuration information; the configuration information is used to configure at least one of the following: the complex signal sequence carries information, the complex signal sequence and the time position of the complex signal sequence carry information, and the complex signal sequence and the on-off keying signal carry information.

[0196] Optionally, the first signal corresponds to single or multiple transmissions.

[0197] Optionally, when the first signal corresponds to multiple transmissions, only part or all of the information of one transmission is carried on a first time unit or a second time unit, or part or all of the information of multiple transmissions is carried on a first time unit or a second time unit.

[0198] Optionally, the complex signal sequence includes a complex sequence determined according to at least one of the following:

[0199] M sequence, ZC sequence, gold sequence, CAZAC sequence;

[0200] Alternatively, the complex signal sequence includes a sequence determined by a real number or complex number sequence generated according to at least two of the following:

[0201] M sequence, ZC sequence, gold sequence, CAZAC sequence.

[0202] Optionally, the complex signal sequence is generated according to the constellation point corresponding to at least one of the following modulation modes: BPSK, pi / 2BPSK, QPSK, 16QAM, 64QAM, 256QAM, 1024QAM, and 4096QAM.

[0203] Optionally, the first signal is a low-power signal, which is received by a low-power receiver.

[0204] Optionally, the type of the low-power receiver includes at least one of the following:

[0205] Possess the ability to demodulate on-off keying signals but cannot detect complex signal sequences;

[0206] Possesses the ability to detect complex signal sequences.

[0207] The signal sending device 150 provided in the embodiment of the present application can implement each process implemented in the method embodiment of Figure 3 and achieve the same technical effect. To avoid repetition, it will not be repeated here.

[0208] Please refer to FIG. 16 , which is a schematic structural diagram of a signal receiving device provided in an embodiment of the present application. The device is applied to a terminal. As shown in FIG. 16 , the signal receiving device 160 includes:

[0209] Receiving module 161, configured to receive a first signal;

[0210] The determination module 162 is used to determine the information carried by the first signal based on the first information; wherein the first information includes any one of the following items: a complex signal sequence in the first signal, a complex signal sequence in the first signal and a time position of the complex signal sequence, a complex signal sequence in the first signal and an on-off keying signal.

[0211] Optionally, the receiving module 161 is specifically configured to: use a low-power receiver to receive the first signal.

[0212] Optionally, the low-power receiver has the ability to detect complex signal sequences.

[0213] Optionally, if the first signal includes an on-off keying signal, the complex signal sequence is a sequence modulated on an on symbol of the on-off keying signal.

[0214] Optionally, the time resource of the first signal includes one or more first time units, the first time unit includes one or more OFDM symbols, or the first time unit includes one or more OOK symbols.

[0215] Optionally, the time resource of the first signal includes one or more first time units, and the first time units carry part or all of the information of the first signal.

[0216] Optionally, the time resource of the first signal includes multiple first time units, and the receiving module 161 is specifically configured to: receive the first signal in the multiple first time units;

[0217] The determination module 162 is specifically used to: determine, based on the position of the first time unit in the multiple first time units, a first relationship between the bit position of the information carried by the complex signal sequence on the first time unit and the bit position of the information carried by the time position of the complex signal sequence, or determine a second relationship between the bit position of the information carried by the complex signal sequence on the first time unit and the bit position of the information carried by the on-off keying signal; and, determine, based on the complex signal sequence on the first time unit and the time position of the complex signal sequence, and the first relationship, the information carried on the first time unit; or, determine, based on the complex signal sequence on the first time unit and the on-off keying signal, and the second relationship, the information carried on the first time unit.

[0218] Optionally, the number of complex signal sequences that the first signal can carry is N, and one of the N complex signal sequences is sent in a second time unit, where N is an integer greater than or equal to 1; the second time unit is any one of the following: an OFDM symbol, an OFDM symbol part, an OOK symbol, and an OOK ON symbol.

[0219] Optionally, the maximum number of bits carried by the complex signal sequence on the second time unit is log2(N).

[0220] Optionally, the first time unit includes one or more second time units, and the number of bits carried by the first time unit satisfies any one of the following:

[0221] Determined according to the number of bits carried by one or more second time units;

[0222] Determined based on: the number of bits carried by one or more of the second time units, the number of bits determined based on the time position of the second time unit or the time position of the complex signal sequence on the second time unit;

[0223] Determine based on the following: the number of bits carried by one or more of the second time units, and the number of bits carried by the OOK symbol in the first time unit.

[0224] Optionally, the first time unit carries all bit information of the first signal, and all bit information of the first signal is load information carried by the first signal, or all bit information of the first signal includes load information carried by the first signal and CRC generated based on the load information.

[0225] Optionally, the information carried by the complex signal sequence is load information carried by the first signal; or, the information carried by the complex signal sequence includes: load information carried by the first signal and a CRC generated based on the load information;

[0226] Alternatively, the information carried by the complex signal sequence and the time position where the complex signal sequence is located is the load information carried by the first signal; or, the information carried by the complex signal sequence and the time position where the complex signal sequence is located includes: the load information carried by the first signal and the CRC generated based on the load information.

[0227] Optionally, the determination module 162 is further configured to determine, based on at least one of a network configuration, a protocol agreement, and a predefined rule, information carried by the first signal according to the first information.

[0228] Optionally, the first signal corresponds to single or multiple transmissions.

[0229] Optionally, when the first signal corresponds to multiple transmissions, only part or all of the information of one transmission is carried on a first time unit or a second time unit, or part or all of the information of multiple transmissions is carried on a first time unit or a second time unit.

[0230] Optionally, the receiving module 161 is specifically configured to: detect a complex signal sequence in the first signal over a second time unit;

[0231] The determining module 162 is used for any of the following:

[0232] determining, according to the detected complex signal sequence, information bits carried by the second time unit;

[0233] determining, according to the detected complex signal sequence and a time position of the complex signal sequence, an information bit carried by the second time unit;

[0234] The information bits carried on the second time unit are determined according to the detected complex signal sequence and the on-off keying signal.

[0235] Optionally, if any complex signal sequence is not detected in the second time unit, the second time unit does not carry any information.

[0236] Optionally, if any complex signal sequence is not detected in the second time unit, the second time unit corresponds to an off symbol of an on-off keying signal.

[0237] Optionally, if the network side does not configure the first signal to use Manchester encoding, the determining module 162 is configured to: determine the information carried by the first signal according to the complex signal sequence in the first signal;

[0238] Alternatively, if the network side configures the first signal to use Manchester encoding, the determination module 162 is used to: determine the information carried by the first signal based on the complex signal sequence in the first signal and the time position of the complex signal sequence; or determine the information carried by the first signal based on the complex signal sequence and the on-off keying signal in the first signal.

[0239] Optionally, if the network side does not configure the first time unit, the determining module 162 is configured to: determine the information carried by the first signal according to the complex signal sequence in the first signal;

[0240] Alternatively, if the network side configures a first time unit, the determination module 162 is used to: determine the information carried by the first signal based on the complex signal sequence in the first signal and the time position of the complex signal sequence; or determine the information carried by the first signal based on the complex signal sequence and the on-off keying signal in the first signal.

[0241] Optionally, if the network side does not configure an on-off keying signal, the determining module 162 is configured to: determine information carried by the first signal according to a complex signal sequence in the first signal;

[0242] Alternatively, if the network side configures an on-off keying signal, the determination module 162 is used to: determine the information carried by the first signal based on the complex signal sequence in the first signal and the time position of the complex signal sequence; or determine the information carried by the first signal based on the complex signal sequence and the on-off keying signal in the first signal.

[0243] The signal receiving device 160 provided in the embodiment of the present application can implement each process implemented in the method embodiment of Figure 4 and achieve the same technical effect. To avoid repetition, it will not be described here.

[0244] As shown in Figure 17, an embodiment of the present application further provides a communication device 170, including a processor 171 and a memory 172. The memory 172 stores a program or instruction that can be run on the processor 171. For example, when the communication device 170 is a terminal, the program or instruction, when executed by the processor 171, implements the various steps of the above-mentioned signal receiving method embodiment and can achieve the same technical effect. When the communication device 170 is a network-side device, the program or instruction, when executed by the processor 171, implements the various steps of the above-mentioned signal sending method embodiment and can achieve the same technical effect. To avoid repetition, it will not be repeated here.

[0245] The present application also provides a terminal including a processor and a communication interface, wherein the communication interface is coupled to the processor, and the processor is configured to execute a program or instruction to implement the steps in the method embodiment shown in FIG4 . This terminal embodiment corresponds to the above-mentioned terminal-side method embodiment, and each implementation process and implementation method of the above-mentioned method embodiment are applicable to this terminal embodiment and can achieve the same technical effects.

[0246] Specifically, Figure 18 is a schematic diagram of the hardware structure of a terminal implementing an embodiment of the present application.

[0247] The terminal 1800 includes but is not limited to: a radio frequency unit 1801, a network module 1802, an audio output unit 1803, an input unit 1804, a sensor 1805, a display unit 1806, a user input unit 1807, an interface unit 1808, a memory 1809 and at least some of the components of the processor 1810.

[0248] Those skilled in the art will appreciate that the terminal 1800 may also include a power supply (such as a battery) to power various components. The power supply may be logically connected to the processor 1810 via a power management system, thereby enabling the power management system to manage charging, discharging, and power consumption. The terminal structure shown in FIG18 does not limit the terminal. The terminal may include more or fewer components than shown, or combine certain components, or have different component arrangements, which will not be described in detail here.

[0249] It should be understood that in an embodiment of the present application, the input unit 1804 may include a graphics processing unit (GPU) 18041 and a microphone 18042, and the graphics processor 18041 processes the image data of a static picture or video obtained by an image capture device (such as a camera) in a video capture mode or an image capture mode. The display unit 1806 may include a display panel 18061, and the display panel 18061 may be configured in the form of a liquid crystal display, an organic light emitting diode, etc. The user input unit 1807 includes a touch panel 18071 and at least one of other input devices 18072. The touch panel 18071 is also called a touch screen. The touch panel 18071 may include two parts: a touch detection device and a touch controller. Other input devices 18072 may include, but are not limited to, a physical keyboard, function keys (such as volume control keys, switch keys, etc.), a trackball, a mouse, and a joystick, which will not be repeated here.

[0250] In the embodiment of the present application, after receiving downlink data from a network-side device, the RF unit 1801 may transmit the data to the processor 1810 for processing. Furthermore, the RF unit 1801 may send uplink data to the network-side device. Typically, the RF unit 1801 includes, but is not limited to, an antenna, an amplifier, a transceiver, a coupler, a low-noise amplifier, a duplexer, and the like.

[0251] The memory 1809 can be used to store software programs or instructions and various data. The memory 1809 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, applications or instructions required for at least one function (such as a sound playback function, an image playback function, etc.). In addition, the memory 1809 may include a volatile memory or a non-volatile memory. Among them, the non-volatile memory may be a read-only memory (ROM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), an electrically erasable programmable read-only memory (EEPROM), or a flash memory. Volatile memory can be random access memory (RAM), static random access memory (SRAM), dynamic random access memory (DRAM), synchronous dynamic random access memory (SDRAM), double data rate synchronous dynamic random access memory (DDRSDRAM), enhanced synchronous dynamic random access memory (ESDRAM), synchronous link dynamic random access memory (SLDRAM), and direct RAM bus random access memory (DRRAM). The memory 1809 in the embodiment of the present application includes but is not limited to these and any other suitable types of memory.

[0252] Processor 1810 may include one or more processing units. Optionally, processor 1810 integrates an application processor and a modem processor. The application processor primarily handles operations related to the operating system, user interface, and application programs, while the modem processor primarily processes wireless communication signals, such as a baseband processor. It is understood that the modem processor may not be integrated into processor 1810.

[0253] The radio frequency unit 1801 is configured to receive a first signal;

[0254] Processor 1810 is used to determine the information carried by the first signal based on the first information; wherein the first information includes any one of the following items: a complex signal sequence in the first signal, a complex signal sequence in the first signal and a time position of the complex signal sequence, a complex signal sequence in the first signal and an on-off keying signal.

[0255] It can be understood that the implementation process of each implementation method mentioned in this embodiment can refer to the relevant description of the above-mentioned signal receiving method embodiment and achieve the same or corresponding technical effects. To avoid repetition, it will not be repeated here.

[0256] The present application also provides a network-side device, including a processor and a communication interface, wherein the communication interface is coupled to the processor, and the processor is configured to execute a program or instruction to implement the steps of the method embodiment shown in FIG3 . This network-side device embodiment corresponds to the aforementioned network-side device method embodiment, and each implementation process and implementation method of the aforementioned method embodiment are applicable to this network-side device embodiment and can achieve the same technical effects.

[0257] Specifically, embodiments of the present application also provide a network-side device. As shown in Figure 19, the network-side device 190 includes an antenna 191, a radio frequency device 192, a baseband device 193, a processor 194, and a memory 195. Antenna 191 is connected to radio frequency device 192. In the uplink direction, radio frequency device 192 receives information via antenna 191 and sends the received information to baseband device 193 for processing. In the downlink direction, baseband device 193 processes the information to be transmitted and sends it to radio frequency device 192. Radio frequency device 192 processes the received information and then sends it through antenna 191.

[0258] The method executed by the network-side device in the above embodiment may be implemented in the baseband device 193 , which includes a baseband processor.

[0259] The baseband device 193 may include, for example, at least one baseband board, on which a plurality of chips are arranged, as shown in FIG19 , wherein one of the chips is, for example, a baseband processor, which is connected to the memory 195 through a bus interface to call the program in the memory 195 and execute the network-side device operations shown in the above method embodiment.

[0260] The network side device may further include a network interface 196, which is, for example, a Common Public Radio Interface (CPRI).

[0261] Specifically, the network side device 190 of the embodiment of the present application also includes: instructions or programs stored in the memory 195 and can be run on the processor 194. The processor 194 calls the instructions or programs in the memory 195 to execute the methods executed by each module shown in Figure 15 and achieve the same technical effect. To avoid repetition, it will not be repeated here.

[0262] An embodiment of the present application also provides a readable storage medium, on which a program or instruction is stored. When the program or instruction is executed by a processor, the various processes of the above-mentioned signal sending method embodiment or the various processes of the above-mentioned signal receiving method embodiment are implemented, and the same technical effect can be achieved. To avoid repetition, it will not be repeated here.

[0263] The processor is the processor in the terminal described in the above embodiment. The readable storage medium includes a computer-readable storage medium, such as a computer read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk. In some examples, the readable storage medium may be a non-transitory readable storage medium.

[0264] An embodiment of the present application further provides a chip, which includes a processor and a communication interface, wherein the communication interface is coupled to the processor, and the processor is used to run programs or instructions to implement the various processes of the above-mentioned signal sending method embodiment, or to implement the various processes of the above-mentioned signal receiving method embodiment, and can achieve the same technical effect. To avoid repetition, it will not be repeated here.

[0265] It should be understood that the chip mentioned in the embodiments of the present application can also be called a system-level chip, a system chip, a chip system or a system-on-chip chip, etc.

[0266] An embodiment of the present application further provides a computer program / program product, which is stored in a storage medium. The computer program / program product is executed by at least one processor to implement the various processes of the above-mentioned signal sending method embodiment, or to implement the various processes of the above-mentioned signal receiving method embodiment, and can achieve the same technical effect. To avoid repetition, it will not be repeated here.

[0267] An embodiment of the present application further provides a communication system, including: a terminal and a network-side device, wherein the terminal can be used to execute the steps of the signal receiving method described above, and the network-side device can be used to execute the steps of the signal sending method described above.

[0268] It should be noted that, in this article, the terms "comprise", "include" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements includes not only those elements, but also includes other elements that are not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "comprises a..." does not exclude the presence of other identical elements in the process, method, article or device comprising the 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, and may also include performing functions in a substantially simultaneous manner or in the opposite order according to the functions involved. For example, the described method may be performed in an order different from that described, and various steps may also be added, omitted or combined. In addition, the features described with reference to certain examples may be combined in other examples.

[0269] Through the description of the above embodiments, those skilled in the art can clearly understand that the above-mentioned embodiment methods can be implemented by means of a computer software product plus a necessary general-purpose hardware platform, or of course, by hardware. The computer software product is stored in a storage medium (such as ROM, RAM, magnetic disk, optical disk, etc.) and includes a number of instructions for enabling a terminal or network-side device to execute the methods described in each embodiment of the present application.

[0270] The embodiments of the present application are described above in conjunction with the accompanying drawings, but the present application is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of this application, ordinary technicians in this field can also make many forms of implementation methods without departing from the purpose of this application and the scope of protection of the claims. These implementation methods are all within the protection of this application.

Claims

1. A signal transmission method, wherein: include: The network side device sends a first signal; wherein, the first signal includes at least a complex signal sequence, the complex signal sequence carries information, or the complex signal sequence and the time position of the complex signal sequence carry information, or the complex signal sequence and the on-off keying signal carry information.

2. The method according to claim 1, wherein If the first signal further includes an on-off keying signal, the complex signal sequence is a sequence modulated on an on-off symbol (OOK ON symbol) of the on-off keying signal.

3. The method according to claim 1 or 2, wherein: The time resource of the first signal includes one or more first time units, and the first time unit includes one or more orthogonal frequency division multiplexing (OFDM) symbols, or the first time unit includes one or more on-off keying (OOK) signal symbols.

4. The method according to any one of claims 1 to 3, wherein: The time resources of the first signal include multiple first time units; wherein, the relationship between the bit position of the information carried by the complex signal sequence on the first time unit and the bit position of the information carried by the time position of the complex signal sequence or the information carried by the on-off keying signal is determined according to the position of the first time unit in the multiple first time units.

5. The method according to any one of claims 1 to 4, wherein: The number of complex signal sequences that the first signal can carry is N, and one of the N complex signal sequences is sent in a second time unit, where N is an integer greater than or equal to 1; the second time unit is any one of the following: an OFDM symbol, an OFDM symbol part, an OOK symbol, and an on-off keying signal OOK ON symbol.

6. The method according to any one of claims 3 to 5, wherein: The first time unit includes one or more second time units, and the number of bits carried by the first time unit satisfies any one of the following: Determined according to the number of bits carried by one or more second time units; Determined based on: the number of bits carried by one or more of the second time units, the number of bits determined based on the time position of the second time unit or the time position of the complex signal sequence on the second time unit; The determination is based on the following: the number of bits carried by one or more of the second time units, and the number of bits carried by the OOK symbol in the first time unit.

7. The method according to any one of claims 1 to 6, wherein: The method further comprises: The network side device sends configuration information; wherein, the configuration information is used to configure at least one of the following: the complex signal sequence carries information, the complex signal sequence and the time position of the complex signal sequence carry information, and the complex signal sequence and the on-off keying signal carry information.

8. The method according to any one of claims 1 to 7, wherein: The first signal corresponds to a single transmission or multiple transmissions.

9. The method according to claim 8, wherein When the first signal corresponds to multiple transmissions, a first time unit or a second time unit carries only part or all of the information of one transmission, or a first time unit or a second time unit carries part or all of the information of multiple transmissions.

10. The method according to any one of claims 1 to 9, wherein: The complex signal sequence includes a complex sequence determined according to at least one of the following: M sequence, ZC sequence, gold sequence, constant envelope zero autocorrelation CAZAC sequence; or, The complex signal sequence includes a sequence determined by a real number or complex number sequence generated according to at least two of the following: M sequence, ZC sequence, gold sequence, CAZAC sequence.

11. The method according to any one of claims 1 to 9, wherein: The complex signal sequence is generated according to the constellation points corresponding to at least one of the following modulation modes: binary phase shift keying BPSK, pi / 2BPSK, quadrature phase shift keying QPSK, 16-quadrature amplitude modulation QAM, 64QAM, 256QAM, 1024QAM, and 4096QAM.

12. The method according to any one of claims 1 to 11, wherein: The first signal is a low-power signal, and is used to be received by a low-power receiver.

13. The method according to claim 12, wherein: The type of the low-power receiver includes at least one of the following: Possess the ability to demodulate on-off keying signals but cannot detect complex signal sequences; Possesses the ability to detect complex signal sequences.

14. A signal receiving method, wherein: include: The terminal receives the first signal; The terminal determines the information carried by the first signal based on the first information; wherein the first information includes any one of the following items: a complex signal sequence in the first signal, a complex signal sequence in the first signal and a time position of the complex signal sequence, a complex signal sequence in the first signal and an on-off keying signal.

15. The method according to claim 14, wherein The terminal receives a first signal, including: The terminal receives the first signal using a low-power receiver.

16. The method according to claim 14 or 15, wherein: The time resource of the first signal includes a plurality of first time units, and the receiving the first signal includes: The terminal receives the first signal over the plurality of first time units; The determining, based on the first information, the information carried by the first signal includes: The terminal determines, based on a position of the first time unit in the multiple first time units, a first relationship between a bit position of information carried by the complex signal sequence on the first time unit and a bit position of information carried by the time position of the complex signal sequence, or determines a second relationship between a bit position of information carried by the complex signal sequence on the first time unit and a bit position of information carried by an on-off keying signal; The terminal determines the information carried on the first time unit based on the complex signal sequence on the first time unit and the time position of the complex signal sequence, and the first relationship; or determines the information carried on the first time unit based on the complex signal sequence on the first time unit and the on-off keying signal, and the second relationship.

17. The method according to any one of claims 14 to 16, wherein: The time resource of the first signal includes one or more first time units, the first time unit includes one or more second time units, and the number of bits carried by the first time unit satisfies any one of the following: Determined according to the number of bits carried by one or more second time units; Determined based on: the number of bits carried by one or more of the second time units, the number of bits determined based on the time position of the second time unit or the time position of the complex signal sequence on the second time unit; The determination is based on the following: the number of bits carried by one or more of the second time units, and the number of bits carried by the OOK symbol in the first time unit.

18. The method according to any one of claims 14 to 17, wherein: The information carried by the complex signal sequence is the load information carried by the first signal; or the information carried by the complex signal sequence includes: the load information carried by the first signal and a CRC generated based on the load information; or, The information carried by the complex signal sequence and the time position where the complex signal sequence is located is the load information carried by the first signal; or, the information carried by the complex signal sequence and the time position where the complex signal sequence is located includes: the load information carried by the first signal and the CRC generated based on the load information.

19. The method according to any one of claims 14 to 18, wherein: The terminal determining, according to the first information, information carried by the first signal, including: The terminal determines, according to at least one of a network configuration, a protocol agreement, and a predefined rule, information carried by the first signal based on the first information.

20. The method according to claim 14, wherein The terminal receives a first signal, including: The terminal detects a complex signal sequence in the first signal over a second time unit; The terminal determines, based on the first information, information carried by the first signal, including any one of the following: The terminal determines, according to the detected complex signal sequence, the information bits carried by the second time unit; The terminal determines, based on the detected complex signal sequence and the time position of the complex signal sequence, the information bits carried by the second time unit; The terminal determines the information bits carried on the second time unit according to the detected complex signal sequence and the on-off keying signal.

21. The method according to claim 20, wherein If any complex signal sequence is not detected in the second time unit, the second time unit carries no information.

22. The method according to claim 20 or 21, wherein If any complex signal sequence is not detected in the second time unit, the second time unit corresponds to an off symbol of the on-off keying signal.

23. The method according to any one of claims 14 to 22, wherein: If the network side does not configure the first signal to use Manchester encoding, determining, based on the first information, the information carried by the first signal includes: determining, by the terminal, information carried by the first signal according to a complex signal sequence in the first signal; or, If the network side configures the first signal to use Manchester encoding, determining, based on the first information, the information carried by the first signal includes: The terminal determines the information carried by the first signal based on the complex signal sequence in the first signal and the time position of the complex signal sequence; or determines the information carried by the first signal based on the complex signal sequence in the first signal and an on-off keying signal.

24. The method according to any one of claims 14 to 23, wherein: If the network side does not configure the first time unit, determining, according to the first information, the information carried by the first signal includes: determining, by the terminal, information carried by the first signal according to a complex signal sequence in the first signal; or, If the network side configures the first time unit, determining the information carried by the first signal according to the first information includes: The terminal determines the information carried by the first signal based on the complex signal sequence in the first signal and the time position of the complex signal sequence; or determines the information carried by the first signal based on the complex signal sequence in the first signal and an on-off keying signal.

25. The method according to any one of claims 14 to 24, wherein: If the network side does not configure an on-off keying signal, determining, based on the first information, information carried by the first signal includes: determining, by the terminal, information carried by the first signal according to a complex signal sequence in the first signal; or, If the network side configures an on-off keying signal, determining, based on the first information, information carried by the first signal includes: The terminal determines the information carried by the first signal based on the complex signal sequence in the first signal and the time position of the complex signal sequence; or determines the information carried by the first signal based on the complex signal sequence in the first signal and an on-off keying signal.

26. A signal transmitting device, wherein: include: A first sending module is used to send a first signal; wherein, the first signal at least includes a complex signal sequence, the complex signal sequence carries information, or the complex signal sequence and the time position of the complex signal sequence carry information, or the complex signal sequence and the on-off keying signal carry information.

27. The device according to claim 26, wherein The time resource of the first signal includes one or more first time units, the first time unit includes one or more orthogonal frequency division multiplexing (OFDM) symbols, or the first time unit includes one or more OOK symbols.

28. The device according to claim 26 or 27, wherein The time resources of the first signal include multiple first time units; wherein, the relationship between the bit position of the information carried by the complex signal sequence on the first time unit and the bit position of the information carried by the time position of the complex signal sequence or the information carried by the on-off keying signal is determined according to the position of the first time unit in the multiple first time units.

29. The device according to claim 27 or 28, wherein The first time unit includes one or more second time units, and the number of bits carried by the first time unit satisfies any one of the following: Determined according to the number of bits carried by one or more second time units; Determined based on: the number of bits carried by one or more of the second time units, the number of bits determined based on the time position of the second time unit or the time position of the complex signal sequence on the second time unit; The determination is based on the following: the number of bits carried by one or more of the second time units, and the number of bits carried by the OOK symbol in the first time unit.

30. A signal receiving device, wherein: include: A receiving module, configured to receive a first signal; A determination module is used to determine the information carried by the first signal based on first information; wherein the first information includes any one of the following items: a complex signal sequence in the first signal, a complex signal sequence in the first signal and a time position of the complex signal sequence, a complex signal sequence in the first signal and an on-off keying signal.

31. The device according to claim 30, wherein The time resource of the first signal includes a plurality of first time units, The receiving module is specifically configured to: receive the first signal over the plurality of first time units; The determination module is specifically used to: determine, based on the position of the first time unit in the multiple first time units, a first relationship between the bit position of the information carried by the complex signal sequence on the first time unit and the bit position of the information carried by the time position of the complex signal sequence, or determine a second relationship between the bit position of the information carried by the complex signal sequence on the first time unit and the bit position of the information carried by the on-off keying signal; and, determine, based on the complex signal sequence on the first time unit and the time position of the complex signal sequence, and the first relationship, the information carried on the first time unit; or, determine, based on the complex signal sequence on the first time unit and the on-off keying signal, and the second relationship, the information carried on the first time unit.

32. The apparatus according to claim 30, wherein The receiving module is specifically configured to: detect a complex signal sequence in the first signal over a second time unit; The determining module is specifically configured to perform any of the following: determining, according to the detected complex signal sequence, information bits carried by the second time unit; determining, according to the detected complex signal sequence and a time position of the complex signal sequence, an information bit carried on the second time unit; The information bits carried on the second time unit are determined according to the detected complex signal sequence and the on-off keying signal.

33. A network side device, wherein: The method comprises a processor and a memory, wherein the memory stores a program or instruction that can be run on the processor, and when the program or instruction is executed by the processor, the steps of the signal sending method according to any one of claims 1 to 13 are implemented.

34. A terminal, wherein: The method comprises a processor and a memory, wherein the memory stores a program or instruction that can be run on the processor, and when the program or instruction is executed by the processor, the steps of the signal receiving method according to any one of claims 14 to 25 are implemented.

35. A readable storage medium, wherein: The readable storage medium stores a program or instruction, and when the program or instruction is executed by the processor, it implements the steps of the signal sending method according to any one of claims 1 to 13, or implements the steps of the signal receiving method according to any one of claims 14 to 25.

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