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

Abstract

The invention discloses a signal sending method and device, a signal receiving method and device, a terminal and network side equipment, and belongs to the technical field of communication, and the signal sending method comprises the steps that the network side equipment sends a first signal; the first signal at least comprises a complex signal sequence and information carried by the complex signal sequence, or information carried by the complex signal sequence and a time position where the complex signal sequence is located, or information carried by the complex signal sequence and an on-off keying signal.

Description

Technical Field

[0001] This application belongs to the field of communication technologies, and particularly relates to a signal sending method, a receiving method, a device, a terminal, and a network-side device. Background Art

[0002] To reduce power consumption, a low-power receiver is introduced in related technologies, which triggers the wake-up of the main communication module by detecting a low-power wake-up signal. For the modulation method of the low-power wake-up signal, it can be selected as an On-Off Keying (OOK) signal superimposed on an Orthogonal Frequency Division Multiplex (OFDM) sequence to be applicable to terminals with different receiver capabilities. However, it has not been determined how to use the low-power signal to carry information. Summary of the Invention

[0003] Embodiments of this application provide a signal sending method, a receiving method, a device, a terminal, and a network-side device, which can solve the problem of how to use a low-power signal to carry information.

[0004] In a first aspect, a signal sending method is provided, which is executed by a network-side device. The method includes:

[0005] The network-side device sends 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 where the complex signal sequence is located carry information, or the complex signal sequence and an on-off keying signal carry information.

[0006] In a second aspect, a signal receiving method is provided, which is executed by a terminal. The method includes:

[0007] The terminal receives the first signal;

[0008] The terminal determines the information carried by the first signal according to first information; the first information includes any one of the following: the complex signal sequence in the first signal, the complex signal sequence in the first signal and the time position where the complex signal sequence is located, the complex signal sequence in the first signal and an on-off keying signal.

[0009] In a third aspect, a signal sending device is provided, which is applied to a network-side device and includes:

[0010] A first sending module, configured 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 where the complex signal sequence is located carry information, or the complex signal sequence and an on-off keying signal carry information.

[0011] In a fourth aspect, a signal sending device is provided, which is applied to a terminal and includes:

[0012] a receiving module, configured to receive a first signal;

[0013] a determining module, configured to determine the information carried by the first signal according to first information; wherein the first information includes any one of the following: a complex signal sequence in the first signal, the complex signal sequence in the first signal and the time position where the complex signal sequence is located, the complex signal sequence in the first signal and an on-off keying signal.

[0014] In a fifth aspect, a terminal is provided. The terminal includes a processor and a memory. The memory stores a program or instructions that can run on the processor. When the program or instructions are executed by the processor, the steps of the method described in the second aspect are implemented.

[0015] In a sixth aspect, a terminal is provided, including a processor and a communication interface. The communication interface is configured to receive a first signal, and the processor is configured to determine the information carried by the first signal according to first information; the first information includes any one of the following: a complex signal sequence in the first signal, the complex signal sequence in the first signal and the time position where the complex signal sequence is located, the complex signal sequence in the first signal and an on-off keying signal.

[0016] In a seventh aspect, a network-side device is provided. The network-side device includes a processor and a memory. The memory stores a program or instructions that can run on the processor. When the program or instructions are executed by the processor, the steps of the method described in the first aspect are implemented.

[0017] In an eighth aspect, a network-side device is provided, including a processor and a communication interface. The communication interface is configured to send a first signal; the first signal at least includes a complex signal sequence, and the complex signal sequence carries information, or the complex signal sequence and the time position where the complex signal sequence is located carry information, or the complex signal sequence and an on-off keying signal carry information.

[0018] In a ninth aspect, a readable storage medium is provided. A program or instructions are stored on the readable storage medium. When the program or instructions are executed by a processor, the steps of the method described in the first aspect are implemented, or the steps of the method described in the second aspect are implemented.

[0019] In a tenth aspect, a wireless communication system is provided, including: a terminal and a network-side device. The network-side device can be configured to execute the steps of the method described in the first aspect, and the terminal can be configured to execute the steps of the method described in the second aspect.

[0020] In the eleventh aspect, a chip is provided. The chip includes a processor and a communication interface, the communication interface is coupled to the processor, and the processor is configured to run a program or an instruction 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.

[0021] In the twelfth aspect, a computer program / program product is provided. The computer program / program product is stored in a storage medium, and the program / program product 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.

[0022] In the thirteenth aspect, a network-side device is provided, which is configured to implement the steps of the method described in the first aspect.

[0023] In the fourteenth aspect, a terminal is provided, which is configured to implement the steps of the method described in the second aspect.

[0024] In the embodiments of the present application, by means of the complex signal sequence included in the first signal (such as a low-power signal), it is possible to use the low-power signal to carry information. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 is a block diagram of a wireless communication system to which the embodiments of the present application can be applied;

[0026] Figure 2 is a schematic diagram of a low-power receiver architecture in the embodiments of the present application;

[0027] Figure 3 is a flowchart of a signal sending method provided by the embodiments of the present application;

[0028] Figure 4 is a flowchart of a signal receiving method provided by the embodiments of the present application;

[0029] Figure 5 is one of the schematic diagrams of the information carrying manner in the embodiments of the present application;

[0030] Figure 6 is another schematic diagram of the information carrying manner in the embodiments of the present application;

[0031] Figure 7 is still another schematic diagram of the information carrying manner in the embodiments of the present application;

[0032] Figure 8 is yet another schematic diagram of the information carrying manner in the embodiments of the present application;

[0033] Figure 9It is the fifth schematic diagram of the information carrying method in the embodiments of the present application;

[0034] Figure 10 It is the sixth schematic diagram of the information carrying method in the embodiments of the present application;

[0035] Figure 11 It is the seventh schematic diagram of the information carrying method in the embodiments of the present application;

[0036] Figure 12 It is the eighth schematic diagram of the information carrying method in the embodiments of the present application;

[0037] Figure 13 It is the ninth schematic diagram of the information carrying method in the embodiments of the present application;

[0038] Figure 14 It is the tenth schematic diagram of the information carrying method in the embodiments of the present application;

[0039] Figure 15 It is the structural schematic diagram of a signal sending device provided in the embodiments of the present application;

[0040] Figure 16 It is the structural schematic diagram of another signal sending device provided in the embodiments of the present application;

[0041] Figure 17 It is the structural schematic diagram of a communication device provided in the embodiments of the present application;

[0042] Figure 18 It is the structural schematic diagram of a terminal provided in the embodiments of the present application;

[0043] Figure 19 It is the structural schematic diagram of a network side device provided in the embodiments of the present application. Detailed implementation manners

[0044] Next, the technical solutions in the embodiments of the present application will be clearly described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are a part rather than all of the embodiments of the present application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present application fall within the scope of protection of the present application.

[0045] The terms "first", "second", etc. in this application are used to distinguish similar objects, rather than to describe a specific order or sequence. It should be understood that such terms can be interchanged under appropriate circumstances so that the embodiments of this 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 category, and do not limit the number of objects. For example, the first object can be one or multiple. In addition, "or" in this application means at least one of the connected objects. For example, "A or B" covers three scenarios, namely, Scenario 1: including A and not including B; Scenario 2: including B and not including A; Scenario 3: including both A and B. The character " / " generally indicates that the related objects before and after are in an "or" relationship.

[0046] The term "indication" in this application can be either a direct indication (or an explicit indication) or an indirect indication (or an implicit indication). Among them, a direct indication can be understood as that the sender clearly informs the receiver of specific information, operations to be performed, or request results, etc. in the sent indication; an indirect indication can be understood as that the receiver determines the corresponding information according to the indication sent by the sender, or makes a judgment and determines the operations to be performed or request results, etc. according to the judgment result.

[0047] It is worth pointing out that the technology described in the embodiments of this application is not limited to Long Term Evolution (LTE) / LTE-Advanced (LTE-A) systems, 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 this application are often used interchangeably, and the described technology can be used not only in the systems and radio technologies mentioned above, but also in other systems and radio technologies. The following description describes the New Radio (NR) system for example purposes, and uses NR terms in most of the following descriptions, but these technologies can also be applied to systems other than the NR system, such as the 6th generation (6 thGeneration, 6G) communication system.

[0048] Figure 1Block diagram of a wireless communication system to which embodiments of the present application can be applied is shown. The wireless communication system includes a terminal 11 and a network-side device 12. Among them, the terminal 11 can be a mobile phone, a tablet personal computer, a 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, a flight vehicle, a vehicle user equipment (VUE), a shipborne device, a pedestrian user equipment (PUE), a smart home (home devices with wireless communication functions, such as a refrigerator, a TV, a washing machine, or furniture, etc.), a game console, a personal computer (PC), a teller machine, or a self-service machine, etc., which are terminal-side devices. Wearable devices include: smart watches, smart bracelets, smart earphones, smart glasses, smart jewelry (smart bracelets, smart bracelets, smart rings, smart necklaces, smart anklets, smart ankle chains, etc.), smart wristbands, smart clothing, etc. Among them, the vehicle user equipment can also be referred to as a vehicle terminal, a vehicle controller, a vehicle module, a vehicle component, a vehicle chip, or a vehicle unit, etc. It should be noted that the specific type of the terminal 11 is not limited in the embodiments of the present application. The network-side device 12 can include an access network device or a core network device. Among them, the access network device can also be referred to as a radio access network (RAN) device, a radio access network function, or a radio access network unit. The access network device can 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 referred to as 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, Transmission Reception Point (TRP), or some other suitable term in the art. As long as the same technical effect is achieved, the base station is not limited to specific technical terms.

[0049] To facilitate the understanding of the embodiments of the present application, the following content is first described.

[0050] In the embodiments of the present application, the basic working principle of the low power wake up receiver (LP WUR) is as follows: As Figure 2 shown, the terminal (receiver) includes a main communication module and a low power receiving module (i.e., the low power wake up receiver). The main communication module is used for the transceiver of mobile communication data, and the low power receiving module is used for receiving the low power wake up signal (LP-WUS); the terminal turns on the low power receiving module to monitor the LP-WUS and turns off the main communication module in the energy-saving state; when there is downlink data arriving, the network will send a wake up signal to the terminal. After the terminal monitors the wake up signal through the low power receiving module and makes a series of judgments, it triggers the main communication module to turn on from the off state. At this time, the low power receiving module enters the off state from the working state. The low power receiving module can be continuously turned on or intermittently turned on, and can receive the low power wake up signal when it is turned on.

[0051] Low-power receivers can be classified into various types. For example, they can be divided into the first type of low-power receiver and the second type of low-power receiver. Among them, the first type of low-power receiver has the ability to demodulate waveforms of the first type and does not have the ability to demodulate waveforms of the second type; the second type of low-power receiver has the ability to demodulate waveforms of the second type, and may or may not have the ability to demodulate waveforms of the first type. For example, the waveforms of the first type are OOK signal waveforms, and the waveforms of the second type are orthogonal frequency division multiplexing (OFDM) signal waveforms.

[0052] The structures of low-power receivers can be classified into various types. For example, they can be divided into receivers based on radio frequency envelope detection, or receivers based on intermediate frequency envelope detection, or receivers based on baseband envelope detection of zero intermediate frequency. These low-power receivers with such structures usually have low power consumption and can at least be used for the demodulation of on-off keying signals. Moreover, these low-power receivers can be added with modules for demodulating frequency-shift keying (FSK) signals to support FSK signal demodulation. The structures of low-power receivers that support OFDM signal detection are at least partially different from the above-mentioned receiver structures, and the signal processing can be sequence correlation processing. The power consumption of this type of low-power receiver with such an architecture is higher than that of the above-mentioned receivers but lower than that of the main receiver.

[0053] Optionally, different types of low-power receivers can monitor different signals. For example, the signals monitored by the first type of low-power receiver mentioned above are signals based on OOK waveforms, which can 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 at least include signals based on OFDM waveforms. For example, it includes a wake-up signal LP-WUS based on OFDM, and the OFDM signal is an OFDM sequence modulated on the OOK signal. The signals monitored by the second type of low-power receiver can also include synchronization signals based on OFDM, such as a primary synchronization signal (PSS), a secondary synchronization signal (SSS), etc.

[0054] Next, in combination with the accompanying drawings, through some embodiments and their application scenarios, the signal transmission method, reception method, device, terminal, and network-side device provided by the embodiments of the present application will be described in detail.

[0055] Please refer to Figure 3 , Figure 3It is a flowchart of a signal sending method provided by an embodiment of the present application. This method is executed by a network-side device, such as Figure 3 As shown, the method includes the following steps:

[0056] Step 31: The network-side device sends a first signal; the first signal at least includes a complex signal sequence, and the complex signal sequence carries information, or the complex signal sequence and the time position where the complex signal sequence is located carry information, or the complex signal sequence and an on-off keying signal carry information.

[0057] In an 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 can be optionally a low-power wake-up signal LP-WUS, or a synchronization signal LP-SS based on an OOK waveform, etc.

[0058] Optionally, the types of the low-power receivers can include at least one of the following:

[0059] Having the ability to demodulate an on-off keying signal but unable to detect a complex signal sequence, such as the first type of low-power receiver mentioned above;

[0060] Having the ability to detect a complex signal sequence, such as the second type of low-power receiver mentioned above.

[0061] Optionally, the complex signal sequence is, for example, an OFDM sequence, etc., and the information carried therein is, for example, payload information and / or Cyclic Redundancy Check (CRC) information generated based on the payload information.

[0062] Thus, by means of the complex signal sequence included in the first signal (such as a low-power signal), it is possible to use the low-power signal to carry information, thereby improving the transmission efficiency.

[0063] 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 the on symbol OOK ON symbol of the on-off keying signal. For example, this OOK ON symbol can also be expressed as OOK ON chip.

[0064] Optionally, the time resource of the first signal can include one or more first time units, and the first time unit includes one or more OFDM symbols, or the first time unit includes one or more on-off keying signal symbols OOK symbol. One OOK symbol can be an OOK on symbol, or it can be the off symbol of the on-off keying signal OOK on symbol. For example, this OOK symbol can also be expressed as OOK chip.

[0065] Optionally, the time resource of the first signal may include one or more first time units, and the one or more first time units carry part or all of the information of the first signal. For example, all the information of the first signal may be carried by one first time unit. In this case, all the information of the first signal may be repeatedly transmitted on multiple first time units (such as two or three first time units); alternatively, all the information of the first signal may be carried by multiple first time units together.

[0066] 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 among the multiple first time units. That is to say, 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 according to 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 received by it.

[0067] 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 on 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, a part of an OFDM symbol, an OOK symbol, an on symbol OOKON symbol of an on-off keying signal. For example, if the first signal occupies 4 second time units, such as 4 OFDM symbols, one complex signal sequence can be sent on each OFDM symbol, and the complex signal sequence is one complex signal sequence selected from the N complex signal sequences.

[0068] 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.

[0069] 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 one of the following:

[0070] Determined according to the number of bits carried by one or more of the second time units;

[0071] Determined according to the following: 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 where the complex signal sequences on the second time unit are located;

[0072] Determined according to the following: the number of bits carried by one or more of the second time units, the number of bits carried by the OOK symbol in the first time unit.

[0073] Optionally, if the first time unit carries all the bit information of the first signal, then: all the bit information of the first signal may be the load information carried by the first signal, or all the bit information of the first signal includes the load information carried by the first signal and the CRC generated based on the load information.

[0074] Optionally, the information carried by the complex signal sequences in the first signal may be the load information carried by the first signal; or the information carried by the complex signal sequences in the first signal includes: the load information carried by the first signal and the CRC generated based on the load information;

[0075] Or, the information carried by the complex signal sequences in the first signal and the time position where the complex signal sequences are located may be the load information carried by the first signal; or the information carried by the complex signal sequences in the first signal and the time position where the complex signal sequences are located includes: the load information carried by the first signal and the CRC generated based on the load information.

[0076] Optionally, the signal sending method in this embodiment may further include:

[0077] The network side device sends configuration information; wherein, the configuration information is used to configure at least one of the following: the information carried by the complex signal sequences, the information carried by the complex signal sequences and the time position where the complex signal sequences are located, the information carried by the complex signal sequences and the on-off keying signal. In this way, it is convenient for the terminal to successfully detect the information.

[0078] Optionally, the first signal may correspond to single or multiple transmissions, that is, the first signal may carry the information of single or multiple transmissions. In this way, by means of corresponding multiple transmissions, the transmission efficiency can be improved.

[0079] Optionally, when the first signal corresponds to multiple transmissions, part or all of the information of a single transmission may be carried on a first time unit or a second time unit, or part or all of the information of multiple transmissions may be carried on a first time unit or a second time unit.

[0080] Optionally, the complex signal sequences in the first signal may include, but are not limited to, complex sequences determined according to at least one of the following: M-sequence, ZC-sequence, gold-sequence, Constant Amplitude Zero AutoCorrelation (CAZAC) sequence.

[0081] Optionally, the complex signal sequences in the first signal may include, but are not limited to, sequences determined by real or complex sequences generated (such as multiplication and other operation methods, which are not limited herein) according to at least two of the following: M-sequence, ZC-sequence, gold-sequence, CAZAC sequence.

[0082] It should be noted that the M-sequence or the gold-sequence may be represented in unipolar form, such as each element taking a value of 0 or 1, or in bipolar form, 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 sequence is a ZC-sequence of length 12, and the other sequence is [1 1 1]. After the Kronecker product, these two sequences become a complex sequence of length 36. The complex sequence may be an upsampling of a sequence.

[0083] Optionally, the complex signal sequences in the first signal may be generated according to the constellation points corresponding to at least one of the following modulation methods: Binary Phase Shift Keying (BPSK), pi / 2 BPSK, Quadrature Phase Shift Keying (QPSK), 16 Quadrature Amplitude Modulation (QAM), 64QAM, 256QAM, 1024QAM, 4096QAM, etc. For the specific generation method, it may be determined based on requirements and is not limited herein.

[0084] Please refer to Figure 4 , Figure 4 which is a flowchart of a signal receiving method provided by an embodiment of the present application. This method is executed by a terminal. As Figure 4 shown, the method includes the following steps:

[0085] Step 41: The terminal receives a first signal;

[0086] Step 42: The terminal determines the information carried by the first signal according to the first information; the first information includes any one of the following: the complex signal sequence in the first signal, the complex signal sequence in the first signal and the time position where the complex signal sequence is located, and the complex signal sequence in the first signal and the on-off keying signal.

[0087] In the embodiments 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 optionally a low-power wake-up signal LP-WUS, or a synchronization signal LP-SS based on an OOK waveform, etc. The information may also be referred to as information bits.

[0088] Optionally, the types of the low-power receivers may include at least one of the following:

[0089] Having the ability to demodulate the on-off keying signal but not detect the complex signal sequence, such as the first type of low-power receiver described above;

[0090] Having the ability to detect the complex signal sequence, such as the second type of low-power receiver described above.

[0091] Optionally, the receiving of the first signal may include: the terminal uses a low-power receiver to receive the first signal. For example, the low-power receiver has the ability to detect the complex signal sequence.

[0092] Optionally, the complex signal sequence is, for example, an OFDM sequence, etc., and the information carried therein is, for example, payload information and / or cyclic redundancy check CRC information generated based on the payload information.

[0093] Thus, by means of the complex signal sequence included in the first signal (such as a low-power signal), it is possible to use the low-power signal to carry information, thereby improving the transmission efficiency.

[0094] 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 the on symbol OOK on symbol of the on-off keying signal.

[0095] Optionally, the time resource of the first signal may include one or more first time units, and the first time unit includes one or more OFDM symbols, or the first time unit includes one or more on-off keying signal symbols OOK symbol. One OOK symbol may be OOK on symbol, or may be the off symbol OOK off symbol of the on-off keying signal.

[0096] Optionally, the time resource of the first signal may include one or more first time units, and the first time unit carries part or all of the information of the first signal. For example, it may be that one first time unit carries all the information of the first signal. In this case, all the information of the first signal may be repeatedly transmitted on multiple first time units (such as two or three first time units); it may also be that multiple first time units together carry all the information of the first signal.

[0097] Optionally, if the time resource of the first signal includes multiple first time units, 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 this first time unit and the bit position of the information carried by the time position of the complex signal sequence, or the relationship between the bit position of the information carried by the complex signal sequence on this first time unit and the bit position of the information carried by the on-off keying signal, may be determined according to the position of this first time unit among the multiple first time units. In this way, it is convenient for the terminal to determine the information carried in the first signal it receives.

[0098] Optionally, if the time resource of the first signal includes multiple first time units, the above receiving of the first signal may include:

[0099] The terminal receives the first signal on the multiple first time units;

[0100] The process of determining the information carried by the first signal according to the first information may include:

[0101] The terminal determines 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 determines 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, according to the position of the first time unit among the multiple first time units;

[0102] The terminal determines the information carried on the first time unit according to the complex signal sequence on the first time unit, the time position of the complex signal sequence, and the first relationship; or determines the information carried on the first time unit according to the complex signal sequence on the first time unit and the on-off keying signal, and the second relationship. In this way, it is convenient for the terminal to determine the information carried in the first signal it receives.

[0103] 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, a part of an OFDM symbol, an OOK symbol, an ON symbol of an on-off keying signal OOKON symbol. For example, if the first signal occupies 4 second time units, such as 4 OFDM symbols, one complex signal sequence can be sent in each OFDM symbol, and the complex signal sequence is one complex signal sequence selected from N complex signal sequences.

[0104] Optionally, the maximum number of bits carried by the complex signal sequence in the second time unit is log2(N).

[0105] Optionally, if the first time unit includes one or more second time units, the number of bits carried by the first time unit can satisfy any one of the following:

[0106] Determined according to the number of bits carried by one or more of the second time units;

[0107] Determined according to the following: 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 where the complex signal sequence on the second time unit is located;

[0108] Determined according to the following: the number of bits carried by one or more of the second time units, the number of bits carried by the OOK symbol in the first time unit.

[0109] Optionally, if the first time unit carries all the bit information of the first signal, then: all the bit information of the first signal can be the payload information carried by the first signal, or all the bit information of the first signal includes the payload information carried by the first signal and the CRC generated based on the payload information.

[0110] Optionally, the information carried by the complex signal sequence in the first signal can be the payload information carried by the first signal; or the information carried by the complex signal sequence in the first signal includes: the payload information carried by the first signal and the CRC generated based on the payload information;

[0111] Or, the information carried by the complex signal sequence in the first signal and the time position where the complex signal sequence is located can be the payload information carried by the first signal; or the information carried by the complex signal sequence in the first signal and the time position where the complex signal sequence is located includes: the payload information carried by the first signal and the CRC generated based on the payload information.

[0112] Optionally, the process of determining the information carried by the first signal according to the first information may include: The terminal determines, according to at least one of network configuration, protocol convention, and predefined rules, to determine the information carried by the first signal according to the first information, that is, to determine whether to determine the information carried by the first signal according to the complex signal sequence, or to determine the information carried by the first signal according to the complex signal sequence and its time position, or to determine the information carried by the first signal according to the complex signal sequence and the on-off keying signal.

[0113] Optionally, the first signal may correspond to single or multiple transmissions, that is, the first signal may carry the information of single or multiple transmissions. In this way, by means of corresponding multiple transmissions, the transmission efficiency can be improved.

[0114] Optionally, when the first signal corresponds to multiple transmissions, only part or all of the information of a single transmission may be carried on a first time unit or a second time unit, or part or all of the information of multiple transmissions may be carried on a first time unit or a second time unit.

[0115] Optionally, the above receiving the first signal may include: The terminal detects the complex signal sequence in the first signal on the second time unit;

[0116] The process of determining the information carried by the first signal according to the first information may include any of the following:

[0117] The terminal determines the information bits carried on the second time unit according to the detected complex signal sequence;

[0118] The terminal determines the information bits carried on the second time unit according to the detected complex signal sequence and the time position where the complex signal sequence is located;

[0119] 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.

[0120] Optionally, if no complex signal sequence is detected on the second time unit, no information is carried on the second time unit, that is, the number of information bits is 0.

[0121] Optionally, if no complex signal sequence is detected on the second time unit, the second time unit corresponds to the off symbol of the on-off keying signal OOK off symbol.

[0122] Optionally, if the network side does not configure the first signal to use Manchester coding, determining the information carried by the first signal according to the first information may include: the terminal determines the information carried by the first signal according to the complex signal sequence in the first signal.

[0123] Alternatively, if the network side configures the first signal to use Manchester coding, determining the information carried by the first signal according to the first information may include: the terminal determines the information carried by the first signal according to the complex signal sequence in the first signal and the time position where the complex signal sequence is located; or determines the information carried by the first signal according to the complex signal sequence in the first signal and the on-off keying signal.

[0124] Optionally, if the network side does not configure the first time unit, and the first time unit is specifically as described above, determining the information carried by the first signal according to the first information may include: the terminal determines the information carried by the first signal according to the complex signal sequence in the first signal.

[0125] Alternatively, if the network side configures the first time unit, and the first time unit is specifically as described above, determining the information carried by the first signal according to the first information may include: the terminal determines the information carried by the first signal according to the complex signal sequence in the first signal and the time position where the complex signal sequence is located; or determines the information carried by the first signal according to the complex signal sequence in the first signal and the on-off keying signal.

[0126] Optionally, if the network side does not configure the on-off keying signal (such as the OOK signal), determining the information carried by the first signal according to the first information may include: the terminal determines the information carried by the first signal according to the complex signal sequence in the first signal.

[0127] Alternatively, if the network side configures the on-off keying signal, determining the information carried by the first signal according to the first information may include: the terminal determines the information carried by the first signal according to the complex signal sequence in the first signal and the time position where the complex signal sequence is located; or determines the information carried by the first signal according to the complex signal sequence in the first signal and the on-off keying signal.

[0128] The present application will be described below with reference to specific embodiments.

[0129] In the embodiments of the present application, a network-side device (such as a network node) sends a first signal, such as LP-WUS (hereinafter described with LP-WUS as an example, but it can also be extended to other low-power signals such as LP-SS, etc.), for waking up a main receiver through a low-power receiver of a terminal. The first signal sent by the network-side device can be an on-off keying signal (OOK signal). Moreover, the first signal can also carry a complex signal sequence; for example, modulating the complex signal sequence on the ON symbol of the OOK signal, in which case the complex signal sequence is, for example, a time-domain signal before discrete Fourier transform (DFT); or modulating the complex signal sequence on an OFDM symbol, in which case 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 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 can include a sequence generated by constellation points corresponding to one or more of the following modulation methods: BPSK, pi / 2BPSK, QPSK, 16QAM, 64QAM, 256QAM, 1024QAM, 4096QAM, etc. The M sequence or the gold sequence can be represented in a unipolar form, such as each element taking a value of 0 or 1, or in a bipolar form, such as each element taking 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 of these two sequences, it becomes a complex sequence with a length of 36. Preferably, the complex sequence can be an upsampling of a sequence. For the convenience of description, in the following related descriptions, the complex signal sequence is represented by an OFDM sequence, but it is not limited thereto.

[0130] In an alternative embodiment, within a first time unit, the number of bits carried by the first signal through OOK symbols and the number of bits carried by the OFDM sequence can be different. For example, within a first time unit, an OOK symbol carries 1 bit of information bit, and X bits of information bits are carried through N1 OFDM sequences, where N1≥1 and X>1.

[0131] Suppose a first time unit includes Nof OFDM symbols, or includes No OOK chips. Then No or Nof can be configured by the network or predefined by the protocol. For example, Nof = 1, or No = 1. Alternatively, No or Nof can be k times the coding length, where k is a positive integer (e.g., k = 1). Or, No can be k times the number of OOK chips required to carry 1 bit of information bit, where k is a positive integer (e.g., 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, where k is a positive integer (e.g., k = 1). Or, the first time unit can carry all the information bits Xinf of the first signal, and this information bit includes CRC or does not include CRC.

[0132] For example, if the network side device configures a first time unit to include Nof OFDM symbols, then it can be that the OFDM sequence in the Nof OFDM symbols carries all the information bits Xinf of the first signal, or the OFDM sequence and the OOK symbols in the Nof OFDM symbols 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 this OFDM sequence is located carry all the information bits Xinf of the first signal.

[0133] For another example, 1 bit of information in the first signal undergoes line coding with a length of L, such as Manchester coding, to obtain L bits. If an OFDM symbol only carries one OOK chip, then the first time unit can be L OFDM symbols, that is, L OOK chips. If an OFDM symbol carries M2 (M2 > 1) OOK chips, then the first time unit can be L OOK chips, or L / M2 OFDM symbols. In addition, 1 bit of information can also undergo channel coding with a length of L1, such as repetition coding, polar code, RM coding, or other coding methods, and no limitation is made in this regard.

[0134] For another example, 1 bit of information in the first signal undergoes channel coding with a length of L1 and line coding with a length of L to obtain L1 * L bits. If an OFDM symbol only carries one OOK chip, then the first time unit can be L1 * L OFDM symbols, that is, L1 * L OOK chips. If an OFDM symbol carries M2 (M2 > 1) OOK chips, then the first time unit can be L1 * L OOK chips, or L1 * L / M2 OFDM symbols.

[0135] 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 there is encoding, the first time unit is an OFDM symbol or an OOK chip.

[0136] In an alternative embodiment, within a first time unit, if the set of sequences that the network-side device can transmit contains N1 OFDM sequences (denoted as the first type of OFDM sequences) and carries X bit information bits, the network-side device may select one OFDM sequence from the N1 OFDM sequences for transmission. For example, the N1 first-type OFDM sequences may be the permutations and combinations of the time-domain sequences after IFFT at the transmit end of each OFDM symbol within a first time unit.

[0137] In an alternative 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, the first type of low-power receiver is used, then 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.

[0138] In an alternative embodiment, if the low-power receiver used by the terminal has the ability to detect OFDM sequences, that is, the second type of low-power receiver is used, then the number of bits demodulated by the terminal in a first time unit can be determined according to the following implementation method 1 or implementation method 2.

[0139] Implementation method 1:

[0140] 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 the N OFDM sequences in an OOK ON symbol for transmission. According to a special case, the first time unit is an OOK chip, and this OOK chip can be an OOK ON symbol or an OOK OFF chip. Therefore, M = 1 or M = 0; in the OOK ON symbol, the network-side device selects one OFDM sequence from the N OFDM sequences for transmission; in the OOK OFF chip, the network-side device does not transmit an OFDM sequence; then, a first time unit can carry log2(N) information bits or 0 bit information.

[0141] In an alternative embodiment, the Xinf information bits carried by LP-WUS can 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, it can be that the first first time unit carries the first 4 bits of the 8-bit information, and the second first time unit carries the last 4 bits of the 8-bit information; or, the first first time unit carries the last 4 bits of the 8-bit information, and the second first time unit carries the first 4 bits of the 8-bit information.

[0142] In an alternative embodiment, the first time unit may include one or more second time units. 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 one sub-part. For the convenience of description below, the second time unit is taken as an OOK symbol as an example, but not limited thereto. According to one implementation, the transmitter signal generation includes DFT / LS and IFFT operations (which can be equivalent operations with the same function). Before DFT / LS, within an OOK ON symbol, one sequence among N second-type OFDM sequences can be transmitted; for example, if N = 4, then an OOK ON symbol can carry 2 bits of information. Assuming M2 is the number of OOK symbols within an OFDM symbol, if M2 > 1, for example, M2 = 4, then M on2 = M2 / 2 = 2, which is the number of OOK ON symbols within an OFDM symbol. By the permutation and combination of the second-type OFDM sequences transmitted on M on2 OOK ON symbols, it can be equivalent to N Mon2 OFDM sequences. 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 adopts Manchester coding, then 2*M represents the number of second time units included in a first time unit; then, there are N (Mon2*Nof) OFDM sequences in a first time unit, or NM an OFDM sequence; the OFDM sequence of a first time unit can carry M * log2(N) information bits.

[0143] In an alternative embodiment, if the first time unit is the same as the second time unit, 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.

[0144] In an alternative embodiment, 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 = 4 OOK symbols, and the Manchester coding 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, as Figure 5 shown. Assume that the length of a first time unit is determined according to the coding 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 equal to 1. If 8 bits of information are carried by an OFDM sequence, the number N of the second type of OFDM sequences is 4, and the 4 sequences are S1, S2, S3, and S4 respectively. Then: a first time unit can carry M * log2(N) = 2 bits through the OFDM sequence. For example, S1 corresponds to 00, S2 corresponds to 01, S3 corresponds to 10, and S4 corresponds to 11. Then, the first 2 OFDM symbols can carry 8 bits of information. In the last 2 OFDM symbols, these 8 bits of information can be repeatedly transmitted, as Figure 5 shown. Alternatively, the network-side device can send other signals according to requirements in the last 2 OFDM symbols, but it cannot affect the OOK waveform.

[0145] Correspondingly, the terminal based on the second type of low-power receiver can detect the OFDM sequence in each first time unit of LP-WUS. For example, in each OOK symbol of a first time unit, 4 OFDM sequence detections are respectively attempted: 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, no bit information is obtained.

[0146] In another alternative embodiment, assume 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 an OFDM sequence. Correspondingly, a terminal based on a second type of low-power receiver can detect the OFDM sequence in each first time unit of LP-WUS, and in each OOK symbol, attempt to detect 4 OFDM sequences respectively: 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, no bit information is obtained.

[0147] According to another implementation manner, the transmitter signal generation may not include DFT / LS operations. Within an OFDM symbol, one sequence among N OFDM sequences (denoted as the third type of OFDM sequence) can be transmitted 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 can be equivalent to having at most N Nof third type of OFDM sequences in a first time unit. Or, if a first time unit includes M (M = M on2 ) OOK ON symbols, that is, equivalent to transmitting M OFDM symbols of the third type of OFDM sequence, it can be equivalent to having at most N M third type of OFDM sequences in a first time unit, which can carry M * log2(N) bits.

[0148] In an alternative embodiment, assume that the original information sent by LP-WUS is [0 1 0 0 0 0 1 1], Xinf = 8 bits, an OFDM symbol carries / includes M2 = 1 OOK symbol, and the Manchester coding length L = 2. Then, if 8 bits of information are carried through 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 Figure 6As shown in the figure. Assume that the length of a first time unit is one OFDM symbol. If 8-bit information is carried by an OFDM sequence, the number N of the third type of OFDM sequences is 4, and the 4 sequences are S1, S2, S3, and S4 respectively. Then: the number of bits carried by a first time unit is M * log2(N) = 2 bits. Then, the first 4 OFDM symbols can carry 8-bit information. LP-WUS can repeat the transmission of this 8-bit information, or the network-side device can send other signals according to requirements, but it cannot affect the OOK waveform.

[0149] Correspondingly, a terminal based on a second type of low-power receiver can detect OFDM sequences in each first time unit of LP-WUS. For example, try to detect 4 OFDM sequences in each OFDM respectively: if an OFDM sequence is detected, 2-bit information is obtained; if no OFDM sequence is detected, it is 0-bit information, that is, there is no bit information.

[0150] In the OOK ON symbol or OOK OFF symbol in the above description, a terminal based on a second type of low-power receiver can use envelope detection to determine the OOK ON symbol or OOK OFF symbol, or determine it by whether an OFDM sequence is detected. For example, detecting a sequence is the OOK ON symbol, and not detecting a sequence is the OOK OFF symbol. Alternatively, a terminal based on a second type of low-power receiver can not recognize the OOK ON symbol or OOK OFF symbol, and only needs to judge whether the number of bits carried is 0 according to whether a sequence is detected.

[0151] For ease of understanding, the concept of a first time unit is used in the above description. However, in the specific implementation, the network-side device may not configure a first time unit, or the protocol does not define a first time unit. For example, the network-side device only needs to configure the OFDM sequences in a second time unit, or the protocol predefines the OFDM sequences in a second time unit, without involving the first time unit.

[0152] Implementation method 2:

[0153] Different from implementation method 1, in implementation method 2, the number of information bits X1 carried on a first time unit = 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 detected second type of OFDM sequence or the position of the OOK ON symbol, or Y is the number of information bits carried by the OOK symbol. The X-bit information can be determined according to the above implementation method 1 and will not be elaborated here.

[0154] Compared with Implementation Method 1, Implementation Method 2 can carry more information bits in the same time resource. The terminal based on the second type of low-power receiver can obtain all the bit information of LP-WUS in a shorter time, thus saving power. However, when using Implementation Method 2, the terminal based on the second type of low-power receiver is more complex in calculating the bits in each first time unit because it is also necessary to determine the bits according to the time position of the detected second type of OFDM sequence or the position of the OOK ON symbol, or it is required that the terminal can detect the information carried by the OOK symbol.

[0155] In one implementation, the Y bits can be determined according to the time position of the detected second type of OFDM sequence or the position of the OOK ON symbol. For example, the coding length is L, and the number of OOK symbols in one first time unit is M1. Then, in the first time unit, the permutation and combination of the time position of the detected second type of OFDM sequence or the position of the OOK ON symbol is 2 (M1 / L) , and it can carry Y = log2(2 (M1 / L) ) = M1 / L bits. Taking the Manchester coding 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 detected second type of OFDM sequence or the OOK ON symbol in the first position and in the second position represent two values of 1 bit, such as 0 or 1. Assuming the number of OOK symbols in one first time unit is M1 = 4, then Y = 2 bits.

[0156] In another implementation, the Y bits are the information bits carried by the OOK symbol. Similarly, Y = M1 / L.

[0157] In an optional embodiment, for the Xinf information bits carried by LP-WUS, it is also necessary to determine the positions of the X bits and the Y bits in the Xinf bits. Taking the first time unit that can carry all the information bits Xinf of LP-WUS as an example, that is, Xinf = X1 = X + Y, the following describes how to determine the positions of the X bits and the Y bits in the Xinf bits in each first time unit. Assume that the time resource of LP-WUS includes Z first time units. Then, in the z-th time unit, the Y bits can be the (z - 1)*Y + 1 to the z*Y bits of the MSB in Xinf or the (z - 1)*Y + 1 to the z*Y bits of the LSB in Xinf, 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 correspond to the X bits in the chronological order of the second time units.

[0158] In an alternative embodiment, the network-side device may configure a first time unit, for example, configure the number of OFDM symbols or the number of 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 an OOK symbol in a first time unit. Then: the length of the first time unit can be determined according to 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 can be determined according to X and the number of OFDM sequences of an OOK symbol. Alternatively, the length of the first time unit can 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 one OFDM symbol, or the first time unit is half of the LP-WUS time resource.

[0159] In an alternative embodiment, 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 = 4 OOK symbols, and the Manchester coding 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, and 2 OOK symbols are required for each bit. 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 as 1 OFDM symbol, the number of OOK ON symbols M in a first time unit is equal to 2, the number of bits carried by the OFDM sequence detection is represented by O2, and the length is X = M * log2(N) = 6 bits. The number of bits carried by the OFDM sequence position is represented by O1, and the length is Y = M1 / L = 2 bits. Then, as Figure 7 shown, it can be: in OFDM symbol 1, the order of 8 bits of information is [O1, O2]; in OFDM symbol 2, the order of 8 bits of information is [O2(1), O2(2), O1, O2(3), …O2(6)]; in OFDM symbol 3, the order of 8 bits of information is [O2(1), O2(2), O2(3), O2(4), O1, O2(5), O2(6)]; in OFDM symbol 4, the order of 8 bits of information is [O2, O1].

[0160] The terminal based on the second type of low-power receiver can detect the OFDM sequence and the time position where the OFDM sequence is located in each first time unit of the LP-WUS, and determine the bit positions of X bits and Y bits according to the position of the first time unit in the time resource of the LP-WUS. For example, in the z-th time unit, the Y bits are the (z - 1)*Y + 1 to the z*Y bits of the MSB in Xinf or the (z - 1)*Y + 1 to the z*Y bits of the LSB in Xinf, and the X bits are the remaining bits in Xinf.

[0161] In an alternative embodiment, as Figure 7 shown, the LP-WUS can repeat the transmission of 8-bit information 4 times. In another way, the number of times of repeated transmission using the LP-WUS can be less than 4; for example, the 8-bit information is only transmitted in the first OFDM symbol, and in the other 3 OFDM symbols, the OFDM sequence is not transmitted or other signals are sent according to requirements, but the OOK waveform cannot be affected.

[0162] In an alternative embodiment, as Figure 8As shown, assume that the original information sent by LP-WUS is [0 1 0 0 0 0 11], 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 type or the third type of OFDM sequences is 8, and the 8 sequences are S1, S2, S3, S4, S5, S6, S7, and S8 respectively. And the network-side device configures the length of the first time unit to be 4 OFDM symbols, the number M of OOK ON symbols in one first time unit is 2, the bits carried by the OFDM sequence detection are represented by O2, with a length of X = M * log2(N) = 6 bits, and the bits carried by the OFDM sequence position are represented by O1, with a length of Y = M1 / L = 2 bits. Then it can be: In OFDM symbols 1 to 4, the order of the 8-bit information is [O1, O2]; in OFDM symbols 5 to 8, the order of the 8-bit information is [O2(1), O2(2), O1, O2(3), … O2(6)]; in OFDM symbols 9 to 12, the order of the 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 the 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 where the OFDM sequence is located in each first time unit of LP-WUS, and determine the bit positions of X bits and Y bits according to the position of the first time unit in the time resources of LP-WUS. For example, in the z-th time unit, the Y bits are the (z - 1)*Y + 1 to the z*Y bits of the MSB in Xinf or the (z - 1)*Y + 1 to the z*Y bits of the LSB in Xinf, and the X bits are the remaining bits in Xinf.

[0163] Another optional embodiment, such as Figure 9As shown, assume that the original information sent by LP-WUS is [0 1 0 0 0 0 11], Xinf = 8 bits, one OFDM symbol carries M2 = 1 OOK symbol, and the Manchester coding length L = 2. Then, if 8-bit information is 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 type or the 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 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 8 OFDM symbols, M = 4 is the number of OOK ON symbols in a first time unit, and the OFDM sequence in a first time unit carries Xinf = 8 bits, 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, X = 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 of a first time unit, the information in O1 can be sent, as Figure 10 shown. Or, without restricting the transmission of the OFDM sequence in the last 2 OOK ON symbols, the OFDM sequence may not be transmitted or other signals may be sent according to requirements, but the OOK waveform cannot be affected.

[0164] In an alternative embodiment, as Figure 11As shown, assume that the original information sent by LP-WUS is [0 1 0 0 0 0 11], Xinf = 8 bits, one OFDM symbol carries M2 = 1 OOK symbol, and the Manchester coding length L = 2. Then, if 8-bit information is 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 type or the 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 a first time unit. One first time unit carries OFDM sequences carrying Xinf = 8 bits, and X = Xinf – Y = 5 bits. In a first time unit, the OFDM sequences 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, so the length of the last first time unit is shortened to 4 OFDM symbols. In this first time unit, the transmission of OFDM sequences in OOK ON symbols is not restricted, and OFDM sequences may not be transmitted or other signals may be transmitted according to requirements, but the OOK waveform cannot be affected.

[0165] The terminal based on the second type of low-power receiver can detect the information carried by OFDM sequences and OOK symbols in each first time unit of LP-WUS. The terminal can detect only one or more complete first time units.

[0166] 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 1 or implementation method 2, or other implementation methods), in one implementation method, it can be agreed in the protocol which method to use. Optionally, the first signal for the Radio Resource Control (RRC) idle / inactive state uses implementation method 2, while the first signal for the RRC connected state uses implementation method 1. Optionally, the first signal for waking up the MR to receive paging information uses implementation method 2, and the first signal for waking up the MR to receive the Physical Downlink Control Channel (PDCCH) uses implementation method 1. In another implementation method, it can be that the network side device configures which method to use, or determines which method to use according to predefined rules. For example, if the network side device configures the first signal to use Manchester coding, then implementation method 2 is used, otherwise implementation method 1 is used. Another example, if the network side device configures the first time unit, then implementation method 2 is used, otherwise implementation method 1 is used.

[0167] According to any of the above implementation methods, it can be configured by the network side device or predefined by the protocol whether the bit information carried by the OFDM sequence includes CRC. For example, although LP-WUS carries the payload information and the CRC bits generated based on the payload information through OOK symbols, it can be based on the configuration of the network side device or protocol predefined that the bit information carried by the OFDM sequence only includes the payload information and does not include the CRC bits.

[0168] For example, Figure 6 and Figures 8 to 11 in the example of, assume that the information bits Xinf carried by an LP-WUS through OOK symbols and / or OFDM sequences are the same, both including the payload information, or both including the payload information and the CRC bits generated based on the payload information.

[0169] Another example, the information bits carried by the two methods are different. Among them, the information bits carried by the OOK symbol include the payload information and the CRC bits generated based on the payload information, that is, the OOK symbol carries Xinf and CRC bits, where Xinf represents the bits of the payload information, but the information bits carried by the OFDM sequence only include the payload Xinf.

[0170] Optionally, if the bit information carried by the OFDM sequence only includes the payload information and does not include the CRC bits, the terminal based on the second type of low-power receiver can only detect the first time unit containing the payload information and does not detect the first time unit containing CRC.

[0171] Based on an example of Implementation Method 1, as Figure 12 shown, assume that the original information payload sent by LP-WUS is [01 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 coding length L = 2. Then, if Xinf + Xcrc bits of information are carried by OOK symbols, 6 OFDM symbols are required, a total of 12 OOK symbols, where each bit requires 2 OOK symbols. Assume that a first time unit is an OOK symbol, and the number of OOK ON symbols M in the first time unit is M = 1 or M = 0. If 8 bits of information are carried by an OFDM sequence, the number of the second type of OFDM sequences N = 4, and the 4 sequences are S1, S2, S3, and S4 respectively. Then: one first time unit can carry M * log2(N) = 2 bits through the OFDM sequence. For example, S1 corresponds to 00, S2 corresponds to 01, S3 corresponds to 10, and S4 corresponds to 11. Then, the first 2 OFDM symbols can carry 8 bits of information. In the last 4 OFDM symbols, the 8 bits of information can be repeatedly transmitted, or the network-side device can send other signals according to requirements, but the OOK waveform cannot be affected.

[0172] Correspondingly, the terminal based on the second type of low-power receiver can detect the OFDM sequence in each first time unit of LP-WUS to obtain the Xinf = 8-bit payload information. The terminal based on the first type of low-power receiver can obtain the Xinf + Xcrc = 12-bit information in 6 OFDM symbols of LP-WUS.

[0173] Based on an example of Implementation Method 2, as Figure 13As shown, assume that the original information payload sent by LP-WUS is [01 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 coding length L = 2. Then, if Xinf + Xcrc bits of information are carried by OOK symbols, 6 OFDM symbols are required, a total of 12 OOK symbols, and 2 OOK symbols are required for each bit. 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. And the network-side device configures the length of the first time unit to be 1 OFDM symbol, M = 2 is the number of OOK ON symbols in a first time unit, the bits carried by OFDM sequence detection are represented by O2, with a length of X = M * log2(N) = 6 bits, and the load information bits carried by OOK symbols are represented by O1 (excluding CRC), with a length of Y = M1 / L = 2 bits. Then: In OFDM symbol 1, the order of 8 bits of information is = [O1, O2]; in OFDM symbol 2, the order of 8 bits of information is = [O2(1), O2(2), O1, O2(3), … O2(6)]; in OFDM symbol 3, the order of 8 bits of information is = [O2(1), O2(2), O2(3), O2(4), O1, O2(5), O2(6)]; in OFDM symbol 4, the order of 8 bits of information is = [O2, O1]. In OFDM symbol 5 and OFDM symbol 6, the OFDM sequence carries 8 bits of information of the load, as Figure 13 shown. In these two OFDM symbols, since there is no O1, the 8 bits of information are completely carried by the OFDM sequence. Alternatively, in OFDM symbol 5 and OFDM symbol 6, the network-side device can send other signals according to requirements, but it cannot affect the OOK waveform. Correspondingly, the terminal based on the second type of low-power receiver can detect the OFDM sequence in each first time unit of LP-WUS containing load information to obtain Xinf = 8 bits of load information. The terminal can not detect the first time unit where the CRC information is located.

[0174] According to any of the above implementation manners, if the OFDM sequence repeats the transmission of information bits, in one implementation manner, within a first time unit, only part or all of the information of one transmission can be carried, for example Figure 5 、 Figure 9 and Figure 11 shown. In another implementation manner, within a first time unit, the information from multiple repeated transmissions can be carried. As Figure 14As shown, based on Implementation Method 1, there are N = 8 sequences in one OOK ON symbol, so 3 bits of information can be carried. It can be seen that in the first OOK ON symbol in OFDM symbol 2, the last 2 bits of the first transmission and the 1st bit of the second transmission are carried. In the last OOK ON symbol in OFDM symbol 3, the last 1 bit of the second transmission and the 1st and 2nd bits of the third transmission are carried. The advantage of this is that more repeated transmission times can be achieved with the same resources.

[0175] According to any of the above implementation methods, if LP-WUS corresponds to multiple transmissions, the multiple repeated transmissions can be at the load information level; if CRC information needs to be sent, the load information and CRC information are sent. For example: if the load information is 8 bits such as [0 1 0 0 0 0 1 1], each transmission contains 8 bits of information. Or, the multiple repeated transmissions are at the bit level. For example, if the load information is 8 bits such as [0 1 0 0 0 0 1 1], the 1st bit is repeated X times first, and then the 2nd bit repeated X times is sent, until the 8th bit repeated X times is sent.

[0176] In the signal sending method provided by the embodiments of the present application, the execution subject can be a signal sending device. In the embodiments of the present application, taking the signal sending device executing the signal sending method as an example, the signal sending device provided by the embodiments of the present application is described.

[0177] Please refer to Figure 15 , Figure 15 which is a schematic structural diagram of a signal sending device provided by the embodiments of the present application. This device is applied to network side devices, such as Figure 15 shown, the signal sending device 150 includes:

[0178] A first sending module 151, configured 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 where the complex signal sequence is located carry information, or, the complex signal sequence and an on-off keying signal carry information.

[0179] Optionally, if the first signal further includes an on-off keying signal, the complex signal sequence is a sequence modulated on the on symbol OOK ON symbol of the on-off keying signal.

[0180] 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 symbol.

[0181] Optionally, the time resource of the first signal includes one or more first time units, and the one or more first time units carry part or all of the information of the first signal.

[0182] Optionally, the time resource of the first signal includes a plurality of first time units; wherein, the relationship between the bit positions of the information carried by the complex signal sequences on the first time unit and the bit positions of the information carried by the time positions of the complex signal sequences or the on-off keying signal is determined according to the position of the first time unit among the plurality of first time units.

[0183] 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 on 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, a part of an OFDM symbol, an OOK symbol, an on symbol OOKON symbol of an on-off keying signal.

[0184] Optionally, the maximum number of bits carried by the complex signal sequence on the second time unit is log2(N).

[0185] 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:

[0186] Determined according to the number of bits carried by one or more of the second time units;

[0187] Determined according to the following: 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;

[0188] Determined according to the following: the number of bits carried by one or more of the second time units, the number of bits carried by the OOK symbol in the first time unit.

[0189] Optionally, the first time unit carries all the bit information of the first signal, and all the bit information of the first signal is the payload information carried by the first signal, or all the bit information of the first signal includes the payload information carried by the first signal and the cyclic redundancy check CRC generated based on the payload information.

[0190] Optionally, the information carried by the complex signal sequence is the payload information carried by the first signal; or the information carried by the complex signal sequence includes: the payload information carried by the first signal and the CRC generated based on the payload information;

[0191] 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.

[0192] Optionally, the signal transmitting device 150 further includes:

[0193] A second transmitting module, configured to transmit configuration information; the configuration information is used to configure at least one of the following: the information carried by the complex signal sequence, the information carried by the complex signal sequence and the time position where the complex signal sequence is located, and the information carried by the complex signal sequence and the on-off keying signal.

[0194] Optionally, the first signal corresponds to single or multiple transmissions.

[0195] Optionally, when the first signal corresponds to multiple transmissions, only part or all of the information for one transmission is carried on a first time unit or a second time unit, or part or all of the information for multiple transmissions is carried on a first time unit or a second time unit.

[0196] Optionally, the complex signal sequence includes a complex sequence determined according to at least one of the following:

[0197] M sequence, ZC sequence, gold sequence, CAZAC sequence;

[0198] Or, the complex signal sequence includes a sequence determined according to a real or complex sequence generated from at least two of the following:

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

[0200] Optionally, the complex signal sequence is generated according to constellation points corresponding to at least one of the following modulation methods: BPSK, pi / 2BPSK, QPSK, 16QAM, 64QAM, 256QAM, 1024QAM, 4096QAM.

[0201] Optionally, the first signal is a low-power signal and is used to be received by a low-power receiver.

[0202] Optionally, the types of the low-power receivers include at least one of the following:

[0203] Having the ability to demodulate the on-off keying signal but unable to detect the complex signal sequence;

[0204] Having the ability to detect the complex signal sequence.

[0205] The signal sending device 150 provided by the embodiment of the present application can implement Figure 3 each process implemented by the method embodiment and achieve the same technical effect. To avoid repetition, it will not be elaborated here.

[0206] Please refer to Figure 16 , Figure 16 which is a schematic structural diagram of a signal receiving device provided by the embodiment of the present application. This device is applied to a terminal, such as Figure 16 shown. The signal receiving device 160 includes:

[0207] A receiving module 161, configured to receive a first signal;

[0208] A determining module 162, configured to determine the information carried by the first signal according to first information; wherein, the first information includes any one of the following: a complex signal sequence in the first signal, the complex signal sequence in the first signal and the time position where the complex signal sequence is located, the complex signal sequence in the first signal and an on-off keying signal.

[0209] Optionally, the receiving module 161 is specifically configured to: receive the first signal using a low-power receiver.

[0210] Optionally, the low-power receiver has the ability to detect a complex signal sequence.

[0211] Optionally, if the first signal includes an on-off keying signal, the complex signal sequence is a sequence modulated on the on symbol of the on-off keying signal.

[0212] Optionally, the time resource of the first signal includes one or more first time units, and the first time unit includes one or more OFDM symbols, or the first time unit includes one or more OOK symbols.

[0213] Optionally, the time resource of the first signal includes one or more first time units, and the first time unit carries part or all of the information of the first signal.

[0214] Optionally, the time resource of the first signal includes a plurality of first time units, and the receiving module 161 is specifically configured to: receive the first signal on the plurality of first time units;

[0215] The determining module 162 is specifically configured to: determine a first relationship between the bit position where the information carried by the complex signal sequence on the first time unit is located and the bit position where the information carried by the time position of the complex signal sequence is located according to the position of the first time unit in the multiple first time units, or determine a second relationship between the bit position where the information carried by the complex signal sequence on the first time unit is located and the bit position where the information carried by the on-off keying signal is located; and determine the information carried on the first time unit according to the complex signal sequence on the first time unit, the time position of the complex signal sequence, and the first relationship; or determine the information carried on the first time unit according to the complex signal sequence on the first time unit and the on-off keying signal, and the second relationship.

[0216] 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 on 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, a part of an OFDM symbol, an OOK symbol, an OOK ON symbol.

[0217] Optionally, the maximum number of bits carried by the complex signal sequence on the second time unit is log2(N).

[0218] 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:

[0219] Determined according to the number of bits carried by one or more of the second time units;

[0220] Determined according to the following: 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 where the complex signal sequence on the second time unit is located;

[0221] Determined according to the following: the number of bits carried by one or more of the second time units, the number of bits carried by the OOK symbol in the first time unit.

[0222] Optionally, the first time unit carries all the bit information of the first signal, and all the bit information of the first signal is the load information carried by the first signal, or all the bit information of the first signal includes the load information carried by the first signal and the CRC generated based on the load information.

[0223] Optionally, the information carried by the complex signal sequence is the payload information carried by the first signal; or, the information carried by the complex signal sequence includes: the payload information carried by the first signal and the CRC generated based on the payload information.

[0224] Or, the information carried by the complex signal sequence and the time position where the complex signal sequence is located is the payload 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 payload information carried by the first signal and the CRC generated based on the payload information.

[0225] Optionally, the determining module 162 is further configured to: determine the information carried by the first signal according to the first information according to at least one of network configuration, protocol convention, and predefined rules.

[0226] Optionally, the first signal corresponds to single or multiple transmissions.

[0227] Optionally, when the first signal corresponds to multiple transmissions, only part or all of the information of a single 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.

[0228] Optionally, the receiving module 161 is specifically configured to: detect the complex signal sequence in the first signal on the second time unit;

[0229] The determining module 162 is used for any one of the following:

[0230] Determine the information bits carried on the second time unit according to the detected complex signal sequence;

[0231] Determine the information bits carried on the second time unit according to the detected complex signal sequence and the time position where the complex signal sequence is located;

[0232] Determine the information bits carried on the second time unit according to the detected complex signal sequence and the on-off keying signal.

[0233] Optionally, if no complex signal sequence is detected on the second time unit, no information is carried on the second time unit.

[0234] Optionally, if no complex signal sequence is detected on the second time unit, the second time unit corresponds to the off symbol of the on-off keying signal.

[0235] Optionally, if the network side does not configure the Manchester coding for the first signal, 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;

[0236] Or, if the network side configures the Manchester coding for the first signal, 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 and the time position where the complex signal sequence is located; or determine the information carried by the first signal according to the complex signal sequence in the first signal and the on-off keying signal.

[0237] 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;

[0238] Or, if the network side configures 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 and the time position where the complex signal sequence is located; or determine the information carried by the first signal according to the complex signal sequence in the first signal and the on-off keying signal.

[0239] Optionally, if the network side does not configure the on-off keying signal, 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] Or, if the network side configures the on-off keying signal, 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 and the time position where the complex signal sequence is located; or determine the information carried by the first signal according to the complex signal sequence in the first signal and the on-off keying signal.

[0241] The signal receiving device 160 provided by the embodiments of the present application can implement Figure 4 each process implemented by the method embodiments and achieve the same technical effects. To avoid repetition, details are not described here again.

[0242] Such as Figure 17As shown in the figure, an embodiment of the present application further provides a communication device 170, including a processor 171 and a memory 172. A program or instruction that can run on the processor 171 is stored on the memory 172. For example, when the communication device 170 is a terminal, when the program or instruction is executed by the processor 171, each step of the signal reception method embodiment described above is implemented, and the same technical effect can be achieved. When the communication device 170 is a network-side device, when the program or instruction is executed by the processor 171, each step of the signal transmission method embodiment described above is implemented, and the same technical effect can be achieved. To avoid repetition, details are not described here again.

[0243] An embodiment of the present application further provides a terminal, including a processor and a communication interface. The communication interface is coupled to the processor, and the processor is configured to run a program or instruction to implement the steps in the method embodiment as Figure 4 shown. This terminal embodiment corresponds to the above terminal-side method embodiment. Each implementation process and implementation manner of the above method embodiment can be applied to this terminal embodiment, and the same technical effect can be achieved.

[0244] Specifically, Figure 18 FIG. is a schematic hardware structure diagram of a terminal according to an embodiment of the present application.

[0245] The terminal 1800 includes, but is not limited to, at least some components such as 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 a processor 1810.

[0246] Those skilled in the art can understand that the terminal 1800 may further include a power source (such as a battery) for supplying power to each component. The power source can be logically connected to the processor 1810 through a power management system, so as to implement functions such as management of charging, discharging, and power consumption management through the power management system. Figure 18 The terminal structure shown in does not limit the terminal. The terminal may include more or fewer components than shown in the figure, or combine certain components, or have different component arrangements, which will not be elaborated here.

[0247] It should be understood that in the embodiments of the present application, the input unit 1804 may include a Graphics Processing Unit (GPU) 18041 and a microphone 18042. The graphics processor 18041 processes the image data of static pictures or videos obtained by an image capturing 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, for example, a liquid crystal display, an organic light emitting diode, etc. The user input unit 1807 includes at least one of a touch panel 18071 and other input devices 18072. The touch panel 18071 is also referred to as a touch screen. The touch panel 18071 may include two parts: a touch detection device and a touch controller. The 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, a joystick, which will not be elaborated here.

[0248] In the embodiments of the present application, after receiving downlink data from a network side device, the radio frequency unit 1801 may transmit it to the processor 1810 for processing; in addition, the radio frequency unit 1801 may send uplink data to the network side device. Generally, the radio frequency unit 1801 includes, but is not limited to, an antenna, an amplifier, a transceiver, a coupler, a low noise amplifier, a duplexer, etc.

[0249] 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. Among them, the first storage area may store an operating system, application programs 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 volatile memory or non-volatile memory. Among them, the non-volatile memory may be a read-only memory (ROM), a programmable ROM (PROM), an erasable programmable ROM (EPROM), an electrically erasable programmable ROM (EEPROM), or a flash memory. The volatile memory may be a random access memory (RAM), a static RAM (SRAM), a dynamic RAM (DRAM), a synchronous DRAM (SDRAM), a double data rate SDRAM (DDR SDRAM), an enhanced SDRAM (ESDRAM), a synch link DRAM (SLDRAM), and a direct rambus RAM (DRRAM). The memory 1809 in the embodiments of the present application includes but is not limited to these and any other suitable types of memory.

[0250] The processor 1810 may include one or more processing units; optionally, the processor 1810 integrates an application processor and a modem processor. Among them, the application processor mainly processes operations related to the operating system, user interface, and application programs, etc., and the modem processor mainly processes wireless communication signals, such as a baseband processor. It can be understood that the above modem processor may not be integrated into the processor 1810.

[0251] Among them, the radio frequency unit 1801 is used to receive a first signal;

[0252] The processor 1810 is used to determine the information carried by the first signal according to the first information; among them, 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 the time position where the complex signal sequence is located, a complex signal sequence in the first signal and an on-off keying signal.

[0253] It can be understood that the implementation processes of the various implementation manners mentioned in this embodiment may refer to the relevant descriptions of the signal reception method embodiment above, and achieve the same or corresponding technical effects. To avoid repetition, they will not be elaborated here.

[0254] The embodiment of the present application further provides a network-side device, including a processor and a communication interface, where the communication interface is coupled to the processor, and the processor is used to run programs or instructions to implement as Figure 3 shown in the steps of the method embodiment. This network-side device embodiment corresponds to the above network-side device method embodiment. The various implementation processes and implementation manners of the above method embodiment can all be applied to this network-side device embodiment, and can achieve the same technical effects.

[0255] Specifically, the embodiment of the present application further provides a network-side device. As Figure 19 shown, 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. The antenna 191 is connected to the radio frequency device 192. In the uplink direction, the radio frequency device 192 receives information through the antenna 191 and sends the received information to the baseband device 193 for processing. In the downlink direction, the baseband device 193 processes the information to be sent and sends it to the radio frequency device 192. After processing the received information, the radio frequency device 192 sends it out through the antenna 191.

[0256] The method executed by the network-side device in the above embodiments can be implemented in the baseband device 193, and the baseband device 193 includes a baseband processor.

[0257] The baseband device 193 may include, for example, at least one baseband board, and multiple chips are arranged on the baseband board. As Figure 19 shown, 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 device operations shown in the above method embodiments.

[0258] The network-side device may further include a network interface 196, and this interface is, for example, a Common Public Radio Interface (CPRI).

[0259] Specifically, the network-side device 190 of the embodiment of the present application further includes: instructions or programs stored on the memory 195 and executable on the processor 194. The processor 194 calls the instructions or programs in the memory 195 to execute Figure 15 the methods executed by the respective modules shown in, and achieve the same technical effects. To avoid repetition, they will not be elaborated here.

[0260] The embodiments of the present application further provide a readable storage medium, on which a program or instruction is stored. When the program or instruction is executed by a processor, it implements each process of the above-mentioned signal sending method embodiment or each process of the above-mentioned signal receiving method embodiment, and can achieve the same technical effect. To avoid repetition, it will not be elaborated here.

[0261] Wherein, 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 disc, etc. In some examples, the readable storage medium may be a non-transitory readable storage medium.

[0262] The embodiments of the present application further provide a chip, which includes a processor and a communication interface. The communication interface is coupled to the processor. The processor is used to run a program or instruction to implement each process of the above-mentioned signal sending method embodiment or each process of the above-mentioned signal receiving method embodiment, and can achieve the same technical effect. To avoid repetition, it will not be elaborated here.

[0263] It should be understood that the chip mentioned in the embodiments of the present application may also be referred to as a system-on-chip, a system chip, a chip system, or a system-on-chip, etc.

[0264] The embodiments of the present application further provide 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 each process of the above-mentioned signal sending method embodiment or each process of the above-mentioned signal receiving method embodiment, and can achieve the same technical effect. To avoid repetition, it will not be elaborated here.

[0265] The embodiments of the present application further provide a communication system, including: a terminal and a network-side device. The terminal can be used to execute the steps of the above-mentioned signal receiving method, and the network-side device can be used to execute the steps of the above-mentioned signal sending method.

[0266] It should be noted that, in this text, the term "including", "comprising" or any other variant thereof is intended to cover non-exclusive inclusion, such that a process, method, article or device including a series of elements not only includes those elements but also includes other elements not expressly listed, or further includes elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "including one..." does not exclude the existence of additional identical elements in the process, method, article or device including such 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 a reverse order according to the functions involved. For example, the described methods may be performed in an order different from that described, and various steps may be added, omitted or combined. Additionally, features described with reference to certain examples may be combined in other examples.

[0267] From the description of the above embodiments, those skilled in the art can clearly understand that the methods of the above embodiments can be implemented by means of a computer software product plus a necessary general hardware platform, and of course, can also be implemented by hardware. The computer software product is stored in a storage medium (such as ROM, RAM, magnetic disk, optical disk, etc.) and includes several instructions for causing a terminal or a network-side device to execute the methods described in various embodiments of the present application.

[0268] The embodiments of the present application have been described above in conjunction with the accompanying drawings, but the present application is not limited to the above specific embodiments. The above specific embodiments are merely illustrative and not restrictive. Those of ordinary skill in the art, under the inspiration of the present application and without departing from the purpose of the present application and the scope protected by the claims, can also make many forms of embodiments, and these embodiments are all within the protection scope of the present application.

Claims

1. A signal sending method, characterized in that, Including: The network - side device transmits 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 where the complex signal sequence is located carry information, or the complex signal sequence and the on - off keying (OOK) signal carry information.

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

3. The method according to claim 1 or 2, characterized in that, 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 OOK signal symbols (OOK symbol).

4. The method according to any one of claims 1 to 3, characterized in that, The time resource of the first signal includes multiple first time units; wherein, the relationship between the bit position where the information carried by the complex signal sequence on the first time unit is located and the bit position where the information carried by the time position of the complex signal sequence or the OOK signal is located 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, characterized in that The number of complex signal sequences that the first signal can carry is N, and one of the N complex signal sequences is transmitted on 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, a part of an OFDM symbol, an OOK symbol, an on - symbol (OOK ON symbol) of an OOK signal.

6. The method according to any one of claims 3 to 5, characterized in that, 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 of the second time units; Determined according to the following: 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 where the complex signal sequence on the second time unit is located; Determined according to the following: the number of bits carried by one or more of the second time units, 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, characterized in that, The method further includes: The network - side device transmits 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 where the complex signal sequence is located carry information, the complex signal sequence and the OOK signal carry information.

8. The method according to any one of claims 1 to 7, characterized in that, The first signal corresponds to single - time or multiple - time transmissions.

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

10. The method according to any one of claims 1 to 9, characterized in that, The complex signal sequence includes a complex sequence determined according to at least one of the following: M - sequence, ZC - sequence, gold - sequence, constant - amplitude zero - autocorrelation (CAZAC) sequence; Or, The complex signal sequence includes a sequence determined according to a real or complex sequence generated based on 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, characterized in that the complex signal sequence is generated according to constellation points corresponding to at least one of the following modulation methods: binary phase shift keying BPSK, pi / 2 BPSK, quadrature phase shift keying QPSK, 16 quadrature amplitude modulation QAM, 64QAM, 256QAM, 1024QAM, 4096QAM.

12. The method according to any one of claims 1 to 11, characterized in that The first signal is a low-power signal for reception by a low-power receiver.

13. The method according to claim 12, wherein The types of the low-power receiver include at least one of the following: having the ability to demodulate an on-off keying signal but not detect a complex signal sequence; having the ability to detect a complex signal sequence.

14. A signal receiving method, characterized in that, including: The terminal receives the first signal; The terminal determines the information carried by the first signal according to the first information; wherein the first information includes any one of the following: the complex signal sequence in the first signal, the complex signal sequence in the first signal and the time position where the complex signal sequence is located, the complex signal sequence in the first signal and the on-off keying signal.

15. The method according to claim 14, wherein The terminal receiving the first signal includes: The terminal uses a low-power receiver to receive the first signal.

16. The method according to claim 14 or 15, characterized in that, The time resource of the first signal includes a plurality of first time units, and receiving the first signal includes: The terminal receives the first signal on the plurality of first time units; wherein, determining the information carried by the first signal according to the first information includes: The terminal determines a first relationship between the bit position where the information carried by the complex signal sequence on the first time unit is located and the bit position where the information carried by the time position of the complex signal sequence is located according to the position of the first time unit in the plurality of first time units, or determines a second relationship between the bit position where the information carried by the complex signal sequence on the first time unit is located and the bit position where the information carried by the on-off keying signal is located; The terminal determines the information carried on the first time unit according to 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 according to 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, characterized in that 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 of the second time units; determined according to the following: 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 where the complex signal sequence on the second time unit is located; Determined according to the following: the number of bits carried by one or more of the second time units, 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, characterized in that 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 the 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, characterized in that, The terminal determines the information carried by the first signal according to the first information, including: The terminal determines to determine the information carried by the first signal according to the first information according to at least one of network configuration, protocol agreement, and predefined rules.

20. The method according to claim 14, wherein The terminal receives the first signal, including: The terminal detects the complex signal sequence in the first signal on the second time unit; Wherein, the terminal determines the information carried by the first signal according to the first information, including any one of the following: The terminal determines the information bits carried on the second time unit according to the detected complex signal sequence; The terminal determines the information bits carried on the second time unit according to the detected complex signal sequence and the time position where the complex signal sequence is located; 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 no complex signal sequence is detected on the second time unit, no information is carried on the second time unit.

22. The method according to claim 20 or 21, characterized in that, If no complex signal sequence is detected on the second time unit, the second time unit corresponds to the off symbol of the on-off keying signal.

23. The method according to any one of claims 14 to 22, characterized in that If the network side does not configure the first signal to use Manchester coding, determining the information carried by the first signal according to the first information includes: The terminal determines the information carried by the first signal according to the complex signal sequence in the first signal; Or, If the network side configures the first signal to use Manchester coding, determining the information carried by the first signal according to the first information includes: The terminal determines the information carried by the first signal according to the complex signal sequence in the first signal and the time position where the complex signal sequence is located; or determines the information carried by the first signal according to the complex signal sequence in the first signal and the on-off keying signal.

24. The method according to any one of claims 14 to 23, characterized in that, If the network side does not configure 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 according to the 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 according to the complex signal sequence in the first signal and the time position where the complex signal sequence is located; or determines the information carried by the first signal according to the complex signal sequence in the first signal and the on-off keying signal.

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

26. A signal transmitting device, characterized in that, Including: A first sending module, configured 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 where the complex signal sequence is located carry information, or the complex signal sequence and the on-off keying signal carry information.

27. The device according to claim 26, characterized in that, 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 OOK symbols.

28. The device according to claim 26 or 27, characterized in that, 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 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, characterized in that, 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 of the second time units; Determined according to the following: 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; Determined according to the following: the number of bits carried by one or more of the second time units, the number of bits carried by the OOK symbols in the first time unit.

30. A signal receiving device, characterized in that, Including: A receiving module, configured to receive a first signal; A determining module, configured to determine the information carried by the first signal according to the first information; wherein, the first information includes any one of the following: the complex signal sequence in the first signal, the complex signal sequence in the first signal and the time position where the complex signal sequence is located, the complex signal sequence in the first signal and the on-off keying signal.

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

32. The apparatus according to claim 30, wherein The receiving module is specifically configured to: detect the complex signal sequence in the first signal on the second time unit; The determining module is specifically configured to perform any one of the following: Determine the information bit carried on the second time unit according to the detected complex signal sequence; Determine the information bit carried on the second time unit according to the detected complex signal sequence and the time position where the complex signal sequence is located; Determine the information bit carried on the second time unit according to the detected complex signal sequence and the on-off keying signal.

33. A network-side device, characterized in that, Comprising a processor and a memory, the memory stores a program or instruction that can 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, characterized in that, Comprising a processor and a memory, the memory stores a program or instruction that can 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, characterized in that, A program or instruction is stored on the readable storage medium, 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, or the steps of the signal receiving method according to any one of claims 14 to 25 are implemented.

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