Information transmission method and device, equipment and storage medium

Abstract

The invention discloses an information transmission method and device, equipment and a storage medium, and relates to the technical field of communication. The method is performed by a terminal device, the method comprising: receiving a first signal, the first signal being OOK modulated by superimposing OFDM sequences, the first signal being transmitted on at least one first time domain unit, each first time domain unit being associated with an OFDM sequence (510). A design mode of the first signal is provided, and when the first signal is transmitted based on OOK modulation, the OFDM sequence is superposed on the first time domain unit, so that receivers with different capabilities can receive the first signal in different modes, the accuracy of signal receiving by terminal equipment is ensured, and the stability of a communication system is improved.

Description

Information transmission method, device, equipment and storage medium Technical Field

[0001] The embodiments of the present application relate to the field of communication technology, and in particular to an information transmission method, apparatus, device, and storage medium. Background Art

[0002] To match the reception designs of different LR (Low Power Receiver) receivers, the LP-WUS (Low Power-Wake-Up Signal) signal can use OOK (On-Off Keying)-1 or OOK-4 modulation methods and superimpose an OFDM (Orthogonal Frequency Division Multiplexing) sequence for LP-WUS signal transmission. However, further discussion and research is needed on how to superimpose OFDM sequences.

[0003] Summary of the Invention

[0004] The embodiments of the present application provide an information transmission method, apparatus, device, and storage medium. The technical solution is as follows:

[0005] According to one aspect of an embodiment of the present application, a method for transmitting information is provided, the method being executed by a terminal device, the method comprising:

[0006] A first signal is received, where the first signal is OOK modulated by superimposing an OFDM sequence, and the first signal is transmitted on at least one first time domain unit, where each first time domain unit is associated with an OFDM sequence.

[0007] According to one aspect of an embodiment of the present application, a method for information transmission is provided, the method being performed by a network device, the method comprising:

[0008] A first signal is sent, where the first signal is OOK modulated by superimposing an OFDM sequence, and the first signal is transmitted on at least one first time domain unit, where each first time domain unit is associated with an OFDM sequence.

[0009] According to one aspect of an embodiment of the present application, there is provided an information transmission device, the device comprising:

[0010] The receiving module is used to receive a first signal, where the first signal is OOK modulated by superimposing an OFDM sequence, and the first signal is transmitted on at least one first time domain unit, where each first time domain unit is associated with an OFDM sequence.

[0011] According to one aspect of an embodiment of the present application, there is provided an information transmission device, the device comprising:

[0012] The sending module is used to send a first signal, where the first signal is OOK modulated by superimposing an OFDM sequence. The first signal is transmitted on at least one first time domain unit, and each first time domain unit is associated with an OFDM sequence.

[0013] According to one aspect of an embodiment of the present application, a communication device is provided, comprising a processor and a memory, wherein the memory stores a computer program, and the processor executes the computer program to implement the above-mentioned information transmission method. The communication device is a terminal device, or the communication device is a network device.

[0014] According to one aspect of an embodiment of the present application, a computer-readable storage medium is provided, in which a computer program is stored. The computer program is configured to be executed by a processor to implement the above-mentioned information transmission method.

[0015] According to one aspect of an embodiment of the present application, a chip is provided, which includes a programmable logic circuit and / or program instructions, and when the chip is running, is used to implement the above-mentioned information transmission method.

[0016] According to one aspect of an embodiment of the present application, a computer program product is provided, which includes computer instructions stored in a computer-readable storage medium. A processor reads and executes the computer instructions from the computer-readable storage medium to implement the above-mentioned information transmission method.

[0017] The technical solutions provided by the embodiments of the present application may have the following beneficial effects:

[0018] A design method for a first signal is provided. When the first signal is transmitted based on OOK modulation, an OFDM sequence is superimposed on the first time domain unit, so that receivers with different capabilities can receive the first signal in different ways, thereby ensuring the accuracy of signal reception by the terminal device and improving the stability of the communication system. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] FIG1 is a schematic diagram of a network architecture provided by an embodiment of the present application;

[0020] FIG2 is a schematic diagram of PEI-O position determination according to an embodiment of the present application;

[0021] FIG3 is a schematic diagram of an OOK-1 modulation method provided by an embodiment of the present application;

[0022] FIG4 is a schematic diagram of an OOK-4 modulation method provided by an embodiment of the present application;

[0023] FIG5 is a flowchart of an information transmission method provided by an embodiment of the present application;

[0024] FIG6 is a schematic diagram of OPFDM sequence superposition provided by another embodiment of the present application;

[0025] FIG7 is a schematic diagram of OPFDM sequence superposition provided by another embodiment of the present application;

[0026] FIG8 is a schematic diagram of OPFDM sequence superposition provided by another embodiment of the present application;

[0027] FIG9 is a schematic diagram of OPFDM sequence superposition provided by another embodiment of the present application;

[0028] FIG10 is a schematic diagram of OPFDM sequence superposition provided by another embodiment of the present application;

[0029] FIG11 is a block diagram of an information transmission device provided by one embodiment of the present application;

[0030] FIG12 is a block diagram of an information transmission device provided by another embodiment of the present application;

[0031] FIG13 is a schematic structural diagram of a terminal device provided by an embodiment of the present application;

[0032] FIG14 is a schematic diagram of the structure of a network device provided in one embodiment of the present application. DETAILED DESCRIPTION

[0033] In order to make the objectives, technical solutions and advantages of this application clearer, the implementation methods of this application will be further described in detail below with reference to the accompanying drawings.

[0034] The network architecture and business scenarios described in the embodiments of the present application are intended to more clearly illustrate the technical solutions of the embodiments of the present application, and do not constitute a limitation on the technical solutions provided by the embodiments of the present application. A person skilled in the art will appreciate that, with the evolution of the network architecture and the emergence of new business scenarios, the technical solutions provided by the embodiments of the present application are equally applicable to similar technical problems.

[0035] Please refer to FIG1 , which shows a schematic diagram of a network architecture 100 provided by an embodiment of the present application. The network architecture 100 may include: a terminal device 10 , an access network device 20 , and a core network element 30 .

[0036] The terminal device 10 may refer to a UE (User Equipment), a STA (Station), an access terminal, a subscriber unit, a subscriber station, a mobile station, a mobile station, a remote station, a remote terminal, a mobile device, a wireless communication device, a user agent, or a user apparatus. In some embodiments, the terminal device 10 may also be a cellular phone, a cordless phone, a SIP (Session Initiation Protocol) phone, a WLL (Wireless Local Loop) station, a PDA (Personal Digital Assistant), a handheld device with wireless communication capabilities, a computing device or other processing device connected to a wireless modem, an in-vehicle device, a wearable device, a terminal device in a 5GS (5th Generation System) or a terminal device in a future evolved PLMN (Public Land Mobile Network), etc., and the embodiments of the present application are not limited thereto. For ease of description, the above-mentioned devices are collectively referred to as terminal devices. The number of terminal devices 10 is generally multiple, and one or more terminal devices 10 may be distributed in each cell managed by an access network device 20. The terminal device may also be referred to as a terminal or UE for short, and those skilled in the art will understand its meaning.

[0037] The access network device 20 is a device deployed in the access network to provide wireless communication functions for the terminal device 10. The access network device 20 may include various forms of macro network devices, micro network devices, relay stations, APs (Access Points), etc. In systems using different wireless access technologies, the names of devices with access network device functions may be different. For example, in the 5G NR (New Radio) system, it is called gNodeB or gNB (Next Generation Node B). With the evolution of communication technology, the name "access network device" may change. For the convenience of description, in the embodiments of the present application, the above-mentioned devices that provide wireless communication functions for the terminal device 10 are collectively referred to as access network devices. In some embodiments, a communication relationship can be established between the terminal device 10 and the core network network element 30 through the access network device 20. For example, in an LTE (Long Term Evolution) system, the access network device 20 may be an Evolved Universal Terrestrial Radio Access Network (EUTRAN) or one or more eNodeBs in the EUTRAN. In a 5G NR system, the access network device 20 may be a Radio Access Network (RAN) or one or more gNBs in the RAN. In the embodiments of the present application, unless otherwise specified, the "network device" referred to refers to the access network device 20, such as a network device.

[0038] The core network element 30 is a network element deployed in the core network. The functions of the core network element 30 are mainly to provide user connection, user management, and service bearer, and to provide an interface to the external network as a bearer network. For example, the core network elements in the 5G NR system may include network elements such as the AMF (Access and Mobility Management Function) entity, the UPF (User Plane Function) entity, and the SMF (Session Management Function) entity.

[0039] In some embodiments, the access network device 20 and the core network element 30 communicate with each other via an air interface technology, such as the NG interface in the 5G NR system. The access network device 20 and the terminal device 10 communicate with each other via an air interface technology, such as the Uu interface.

[0040] The "5G NR system" in the embodiments of the present application may also be referred to as a 5G system or an NR system, but those skilled in the art will understand its meaning. The technical solutions described in the embodiments of the present application may be applicable to LTE systems, 5G NR systems, and subsequent evolution systems of 5G NR systems (e.g., B5G (Beyond 5G) systems, 6G systems (6th Generation System, sixth generation mobile communication systems)), and other communication systems such as NB-IoT (Narrow Band Internet of Things) systems, which are not limited in this application.

[0041] In an embodiment of the present application, the network device can provide services for a cell, and the terminal device communicates with the network device through the transmission resources (for example, frequency domain resources, or spectrum resources) on the carrier used by the cell. The cell can be a cell corresponding to the network device (for example, a network device). The cell can belong to a macro network device or a network device corresponding to a small cell. The small cells here may include: metro cells, micro cells, pico cells, femto cells, etc. These small cells have the characteristics of small coverage and low transmission power, and are suitable for providing high-speed data transmission services.

[0042] Before introducing the technical solutions of this application, we first introduce and explain some of the relevant technical knowledge involved in this application. The following related technologies can be combined with the technical solutions of the embodiments of this application as optional solutions, and they all fall within the scope of protection of the embodiments of this application. The embodiments of this application include at least part of the following contents.

[0043] 1. Energy-saving design of terminal equipment

[0044] In order to reduce the power consumption of terminal devices, both LTE and NR systems have a DRX (Discontinuous Reception) mechanism, which allows terminal devices to not have to keep the receiver turned on when there is no data to receive, but instead enter a discontinuous reception state, thereby achieving the purpose of saving power. In the evolution of NR technology, higher requirements are placed on UE power saving. For example, with the existing DRX mechanism, during each on duration, the UE needs to continuously detect the PDCCH (Physical Downlink Control Channel) to determine whether the network device schedules data transmission to itself. However, for most UEs, there may be no need to receive data transmission for a long time, but it is still necessary to maintain regular wake-up to monitor possible downlink transmissions. For this type of UE, there is room for further optimization of terminal device power saving.

[0045] In the related art, an energy-saving signal is introduced to achieve further energy saving of terminal devices in the RRC_CONNECTED (RRC (Radio Resource Control) connected state). The energy-saving signal is used in combination with the DRX mechanism, and the terminal device receives an indication of the energy-saving signal before the on duration. When the terminal device has data transmission in the upcoming on duration, the network device "wakes up" the terminal device through the energy-saving signal to monitor the PDCCH during the upcoming on duration; otherwise, the network device instructs the terminal device to continue to "sleep" through the energy-saving signal, and the terminal device does not need to monitor the PDCCH during the upcoming on duration. Compared with the existing DRX mechanism, when the terminal device has no data transmission, the terminal device can omit the monitoring of the PDCCH during the on duration, thereby achieving energy saving.

[0046] In the related technology, a terminal equipment energy saving enhancement project was established to further standardize the energy saving of terminal equipment in RRC_IDLE (RRC idle state) and RRC_INACTIVE (RRC inactive state). The power consumption of terminal equipment in RRC_IDLE and RRC_INACTIVE states mainly comes from periodic discontinuous reception of paging, which includes time-frequency synchronization recovery and AGC (Automatic Gain Control) before the paging opportunity arrives, and the power consumption of detecting the paging PDCCH during the paging opportunity. In order to reduce the power consumption in the process of receiving paging, the related technology introduced an energy-saving signal for paging reception, called PEI (Paging Early Indication), which is used to indicate whether the terminal equipment needs to receive paging at the paging opportunity before the paging opportunity of the terminal equipment arrives.

[0047] 2. PEI design

[0048] The PEI monitoring occasion (PEI occasion, PEI-O) is a collection of multiple PDCCH monitoring occasions. Specifically:

[0049] ●When nrofPDCCH-MonitoringOccasionPerSSB-InPO is not configured, the monitoring opportunity of PEI is the set of S consecutive PDCCH monitoring opportunities.

[0050] Where S is the number of actual transmitted SSBs (Synchronization Signaling Blocks) determined by ssb-PositionsInBurst in the SIB1 (System Information Block);

[0051] In the PEI monitoring occasion, the QCL (Quasi Co-Located) of the Kth PEI PDCCH monitoring occasion is the same as the Kth PDCCH monitoring occasion in the PO (Paging Occasion) (the reference of the QCL is SSB).

[0052] ● In the unlicensed spectrum, the PEI monitoring opportunity is a set of (S*X) consecutive PDCCH monitoring opportunities.

[0053] ○Where S is the number of actual transmitted SSBs determined by ssb-PositionsInBurst in SIB1; if nrofPDCCH-MonitoringOccasionPerSSB-InPO is configured, then X takes the configured value, otherwise X=1;

[0054] The (x*S+K)th PDCCH monitoring opportunity in the PEI monitoring opportunity corresponds to the Kth SSB transmitted, where x=0, 1, ..., X-1, K=1, 2, ..., S;

[0055] If X>1, when the terminal device detects a PEI in a PEI listening opportunity, the terminal device does not need to continue to monitor subsequent listening opportunities associated with the PEI listening opportunity.

[0056] Mapping of PEI and PO

[0057] Network devices can be configured with multiple POs for each PF. If each PEI corresponds to a PO, there will be a large number of independent PEIs, which will increase PEI overhead. On the other hand, the PEIs corresponding to these POs may overlap in the time domain. In related technologies, a WUS can be associated with one or multiple POs. When designing PEIs, in order to reduce PEI overhead and avoid PEI overlap, a mapping mechanism similar to WUS was ultimately determined, that is, a PEI can be associated with one or multiple POs. The specific design is as follows:

[0058] ●Supports one PEI to associate POnumPerPEI POs

[0059] ○The POnumPerPEI POs associated with a PEI can be in one or more PFs. The maximum number of PFs associated with a PEI is 2.

[0060] ○POnumPerPEI is N×N s The factor of N is the number of paging frames in a paging cycle, N s The number of POs in a paging frame. POnumPerPEI can be configured through SIB and has a value range of {1, 2, 4, 8}.

[0061] Determination of PEI-O position

[0062] The terminal device determines the position of PO corresponding to PEI-O based on the reference point and the offset value (from the reference point to the first PDCCH monitoring opportunity of PEI-O), please refer to Figure 2.

[0063] ●First determine the reference frame and use the starting point of the reference frame as the reference point.

[0064] ○ Based on the first PF among all PFs (Paging Frames) associated with the PEI (when a PEI is associated with multiple POs, the associated POs may be located in different PFs), the reference frame is determined by a frame-level offset value.

[0065] ○ The frame level offset value from the first PF among all PFs associated with the PEI to the reference frame, which is configured through the SIB;

[0066] ●Determine the position of the first PDCCH monitoring opportunity in PEI-O based on the reference point and symbol-level offset value.

[0067] ○The symbol-level offset from the reference point to the first PDCCH monitoring opportunity in PEI-O can be configured through the SIB, and the specific offset value is provided by firstPDCCH-MonitoringOccasionOfPEI-O.

[0068] 3. OOK waveform in LP-WUS / WUR (Wake Up Receiver)

[0069] In related technologies, OOK waveforms have been studied. The OOK-1 and OOK-4 waveforms are shown below:

[0070] OOK-1: As shown in Figure 3, each OFDM symbol transmits 1 bit of information. That is, one OFDM time domain length transmits one OOK symbol. The subcarriers of the LP-WUS signal are set as follows:

[0071] -OOK = "1": Modulation is performed on all LP-WUS subcarriers to transmit bit "1" information, also known as an "OOK-on" symbol;

[0072] -OOK = "0": The power level on all LP-WUS subcarriers is 0, used to transmit bit "0" information, also known as the "OOK-off" symbol;

[0073] OOK-4: As shown in Figure 4, each OFDM symbol transmits M bits of information, that is, the time domain length of one OFDM symbol transmits M OOK symbols (as shown in the figure above):

[0074] N SCs of OOK-4 are generated by a transformation (DFT / Least square)

[0075] N' samples are generated from M-bits

[0076] Signal modification may or may NOT be used

[0077] Truncation or other additional modification may or may NOT be used, if not used, N is the same as N'.

[0078] N' can be the same as K

[0079] 4. LP-WUS / WUR

[0080] In related technologies, further energy-saving processing of terminal devices is considered. Research has introduced LP-WUR and designed the LP-WUS signal. The LP-WUR monitors the LP-WUS signal and wakes up the main receiver when it receives a wake-up signal from a network device. Specifically, when using LP-WUR to monitor the wake-up signal, the MR (main receiver) can enter an extremely low-power state—the Ultra Deep Sleep state—thus achieving overall energy savings for the terminal device.

[0081] 3GPP studied LP-WUS / WUR in Release 18 and standardized it in Release 19. The overall standardization content is as follows:

[0082] ■ Standardize a universal LP-WUS design that can be used in both IDLE / INACTIVE and CONNECTED states (RAN1, RAN4)

[0083] ○ Standardize LP-WUS signals based on OOK (OOK-1 and / or OOK-4), and OFDM sequences can be superimposed on the OOK symbols

[0084] The design of the LP-WUS should ensure that in the idle / inactive state, regardless of the receiver design used in the LP-WUR, the LP-WUS transmits the same information. Furthermore, the OFDM sequence can also carry information.

[0085] ○LP-WUS supports at least duty-cycled monitoring mode

[0086] ■For IDLE / INACTIVE state

[0087] ○ Standardize the process and configuration of LP-WUS trigger monitoring of paging messages, including at least: "configuration", "subgroup" and "conditions for entering / exiting LP-WUS monitoring" (RAN2, RAN1, RAN3, RAN4)

[0088] ○ LP-SS with a standardized period of Yms for LP-WUR, which can be used for synchronization and / or RRM of the serving cell (RAN1, RAN4)

[0089] LP-SS is based on OOK-1 and / or OOK-4 waveforms and can be overlaid with or without an OFDM sequence. In the WI, the LP-SS (Low Power-Synchronization Signal) can be overlaid with or without an OFDM sequence.

[0090] -Note: For LP-WUR that can receive existing PSS / SSS signals, the existing PSS (Primary Synchronization Signal) / SSS (Secondary Synchronization Signal) signals can be used instead of LP-SS for synchronization and RRM (Radio Resource Management).

[0091] The value of -Y needs to be determined during the WI phase. 320m can be used as an initial value.

[0092] ○ Further standardize RRM relaxation for UE MR measurements in serving cells and neighboring cells. RRM measurements of UE serving cells can be transferred from MR to LP-WUR, including necessary conditional design (RAN4, RAN2)

[0093] ■For the CONNECTED state, standardize the process of LP-WUS triggering UE MR to monitor PDCCH, including the activation and deactivation process of LP-WUS (RAN2, RAN1)

[0094] ○ Consider RAN2 TU adjustment at RAN#105 meeting

[0095] ○Note: In the CONNECTED state, the UE MR will not enter the ultra-deep sleep state. The UE's RR / RLM (Radio Link Monitoring) / BFD (Bidirectional Forwarding Detection) / CSI (Channel State Information) measurements are performed by the MR.

[0096] ■Note: The coverage performance of LP-WUS and LP-SS is close to that of PUSCH msg3.

[0097] ■The priority of LP-WUS signal optimization design in IDLE / INACTIVE state is higher than that in CONNECTED state.

[0098] In the related art, the design of LP-WUS / WUR needs to be standardized. LR can have a variety of different implementation methods, and can receive LP-WUS signals based on envelope detection; or receive LP-WUS signals based on sequence correlation.

[0099] To match the reception designs of different LRs, the LP-WUS signal design will be standardized in related technologies. LP-WUS signal transmission can be performed based on OOK-1 or OOK-4 modulation methods and superimposed with OFDM sequences. However, there are currently no standards for how to superimpose OFDM sequences and how to indicate information in OFDM sequences.

[0100] Please refer to FIG5 , which shows a flow chart of an information transmission method according to an embodiment of the present application. The method is executed by a terminal device and includes the following step 510 .

[0101] In step 510, the terminal device receives a first signal. The first signal is OOK modulated by superimposing an OFDM sequence. The first signal is transmitted on at least one first time domain unit. Each first time domain unit is associated with an OFDM sequence.

[0102] Accordingly, the network device sends the first signal. In some embodiments, the network device sends the first signal to the terminal device, or the network device sends the first signal to the terminal device group to which the terminal device belongs.

[0103] In some embodiments, the first signal is a wake-up signal. In some embodiments, the first signal is used to wake up a main receiver of the terminal device. Exemplarily, the first signal is an LP-WUS signal.

[0104] In some embodiments, the LR of the terminal device monitors the first signal. When receiving the first signal sent to the terminal device or to the terminal device group to which the terminal device belongs, the LR wakes up the MR. In some embodiments, the LR can continuously monitor the first signal or monitor the first signal discontinuously using a duty-cycle method.

[0105] Taking the LP-WUS as an example, the LR of the terminal device monitors the LP-WUS. When it receives an LP-WUS sent to the terminal device or to the terminal device group to which the terminal device belongs, the LR wakes up the MR. The LR can monitor the LP-WUS continuously or discontinuously using a duty-cycle method.

[0106] In some embodiments, LR has multiple implementations, so when performing first signal monitoring, the detection capabilities of LR also vary. For example, there are at least two types of LR:

[0107] Category 1: Can only receive LP-SS for synchronization and / or RRM, and does not have the ability to receive and detect PSS / SSS signals. This means it uses envelope detection for signal detection and reception.

[0108] Category 2: Has the ability to receive and detect PSS / SSS signals, and can perform synchronization and / or RRM by receiving PSS / SSS signals instead of LP-SS signals. This also means that it has a certain degree of reception capability for traditional NR signals and can perform sequence correlation detection.

[0109] In some embodiments, the terminal device detects the first signal using envelope detection. In some embodiments, if the terminal device only has Category 1 capabilities, the terminal device detects the first signal using envelope detection. In some embodiments, if the terminal device has Category 2 capabilities, the terminal device may also detect the first signal using envelope detection.

[0110] In some embodiments, the terminal device detects the first signal using a sequence correlation detection method. In some embodiments, the terminal device has a category 2 capability, and the terminal device detects the first signal using a sequence correlation detection method.

[0111] In some embodiments, when the terminal device adopts sequence correlation detection, the method further includes at least one of the following steps 520 to 530.

[0112] Step 520: The terminal device determines an OFDM sequence superimposed with the first signal.

[0113] In some embodiments, the terminal device determines, from among multiple OFDM sequences, an OFDM sequence superimposed on the first signal, based on sequence correlation detection. In some embodiments, the multiple OFDM sequences are predefined or configured by a network device, which is not limited in this application. In some embodiments, the terminal device determines, based on correlations between multiple OFDM sequences and the OFDM sequence superimposed on the first signal, an OFDM sequence superimposed on the first signal. In some embodiments, the terminal device determines the OFDM sequence with the highest correlation among the multiple OFDM sequences as the OFDM sequence superimposed on the first signal.

[0114] In step 530, the terminal device determines the information transmitted in the time domain unit set based on the mapping relationship between the OFDM sequence and the information transmitted in the time domain unit set, where the time domain unit set is the first time domain unit set, or the time domain unit set is the second time domain unit set, or the time domain unit set is the third time domain unit set.

[0115] In some embodiments, the mapping relationship between the OFDM sequence and the information transmitted in the time domain unit set is predefined or preconfigured, which is not limited in this application.

[0116] In some embodiments, the terminal device determines a bit sequence transmitted within the set of time domain units based on a mapping relationship between an OFDM sequence and information transmitted within the set of time domain units.

[0117] The first time domain unit set, the second time domain unit set and the third time domain unit set will be introduced in the following embodiments.

[0118] In some embodiments, the first signal may be modulated using an OOK-1 modulation scheme or an OOK-4 modulation scheme. The two modulation schemes will be described below using the LP-WUS signal as an example of the first signal being a LP-WUS signal.

[0119] In some embodiments, the design of the LP-WUS should ensure that in the idle / inactive state, regardless of the receiver design used by the LP-WUR, the LP-WUS transmits the same information. At the same time, the OFDM sequence can also carry information.

[0120] As shown in Figure 6, an OFDM sequence can be superimposed on an "OOK" symbol obtained by "1" modulation, or an OFDM sequence can be superimposed on an "OOK-on" symbol. This figure is for illustration only and does not represent the actual waveform.

[0121] OOK-1 modulation:

[0122] Assuming that the number of subcarriers allocated for LP-WUS signal transmission is N, the OFDM sequence can be superimposed by adjusting the coefficients on the N subcarriers when generating OOK symbols.

[0123] In some embodiments, when OOK modulation is performed on a bit "1", the N subcarriers need to be used to transmit the signal. The frequency domain data of the OFDM sequence can be mapped to the N subcarriers, that is, the values ​​of the N subcarrier coefficients are adjusted so that the OFDM sequence is superimposed on the OOK-on symbol actually transmitted.

[0124] When OOK modulation is performed on bit "0", the coefficients on the N subcarriers are set to 0, that is, the actual transmission power of the OOK-off signal is 0;

[0125] When receiving the LP-WUS signal, the receiver can use envelope detection to detect the LP-WUS signal; or use sequence correlation to detect the LP-WUS signal. During local detection, the same sequence as that superimposed on the OOK is used for correlation detection to determine the information carried by the LP-WUS.

[0126] OOK-4 modulation:

[0127] Assuming that the number of subcarriers allocated for LP-WUS signal transmission is N, the OFDM sequence can be superimposed by adjusting the coefficients on the N subcarriers when generating OOK symbols.

[0128] Each OFDM symbol can carry M bits of information. When performing signal modulation, the M bits must first be sampled / spread to obtain N sample point data. Each bit corresponds to N / M sample points, and the N / M sample points can be superimposed on the sequence.

[0129] If the bit value is "1", the corresponding N / M sample points are "1...1", and superimposing with the sequence can be a dot product with the sequence; if the bit value is "0", the corresponding N / M sample points are "0...0", and the result after superimposing with the sequence is still "0";

[0130] In some embodiments, each OFDM symbol can carry M bits of information. When performing signal modulation, sequence superposition is required. In actual operation, there may be a sequence to be superimposed seq with a length of L. Then, bits with a value of "1" in the M bits are mapped to seq, and bits with a value of "0" are mapped to a sequence of all "0"s with a length of L.

[0131] After obtaining N sample point data after sequence superposition, it is necessary to determine the frequency domain subcarrier coefficients based on the data to generate M OOK modulation symbols.

[0132] In some embodiments, the OFDM sequence is generated by at least one of the following sequences: a ZC sequence, an m sequence, a gold sequence, and a PD sequence. In some embodiments, the modulus of the OFDM sequence is 1. In some embodiments, the modulus of the OFDM sequence may not be 1, which is not limited in this application.

[0133] In some embodiments, the first time domain unit is a time domain unit corresponding to an OOK symbol.

[0134] In some embodiments, the OOK symbol is modulated by bit 1. In some embodiments, the OOK symbol is modulated by bit 0.

[0135] In some embodiments, the first time domain unit is a time domain unit corresponding to an OOK symbol modulated by bit 1, or a time domain unit corresponding to an OOK-on symbol. In some embodiments, the first time domain unit is a time domain unit corresponding to an OOK symbol modulated by bit 0, or a time domain unit corresponding to an OOK-off symbol.

[0136] The technical solution provided in the embodiment of the present application provides a design method for a first signal. When the first signal is transmitted based on OOK modulation, an OFDM sequence is superimposed on the first time domain unit, so that receivers with different capabilities can use different methods to receive the first signal, thereby ensuring the accuracy of signal reception by the terminal device and improving the stability of the communication system.

[0137] Regarding how to modulate the first signal, the embodiments of the present application provide the following methods.

[0138] Method 1: Superimpose the same OFDM sequence on at least one first time domain unit to perform OOK modulation.

[0139] In some embodiments, the first time domain unit is a time domain unit corresponding to an OOK symbol. In some embodiments, the first time domain unit is a time domain unit corresponding to an OOK symbol modulated by bit 1.

[0140] Exemplarily, as shown in FIG7 , when transmitting the first signal, regardless of whether the first signal adopts OOK-1 or OOK-4 modulation, during the transmission of the first signal, the same OFDM sequence is superimposed on all OOK-on symbols (OOK symbols modulated by bit 1).

[0141] In some embodiments, if the first signal adopts the OOK-1 modulation method, the frequency domain data of the OFDM sequence can be directly used as subcarrier coefficients to modulate to obtain OOK-on symbols.

[0142] In some embodiments, if the first signal adopts the OOK-4 modulation method, M bits are transmitted on one OFDM symbol, which will be mapped to M OOK symbols, where the OFDM sequence is superimposed on the OOK-on symbol, and the OFDM sequence is not superimposed on the OOK-off symbol, or it can be considered that the OOK-off symbol is superimposed with an OFDM sequence with a power of 0.

[0143] In some embodiments, the OFDM sequence is associated with the information carried by the OOK symbols.

[0144] In some embodiments, the same OFDM sequence is superimposed on each OOK symbol, which is used only for sequence correlation detection by the terminal device to improve the receiver's reception performance and does not carry the first signal. For example, the OOK symbol superimposed with the OFDM sequence does not carry the LP-WUS wake-up indication information; the wake-up indication information is only carried in the OOK signal that transmits the LP-WUS.

[0145] In some embodiments, the same OFDM sequence is superimposed on each OOK symbol and is also used to map the first signal. Exemplarily, the OOK symbol superimposed with the OFDM sequence is also used to map the wake-up information and can carry the wake-up indication information of the LP-WUS.

[0146] In some embodiments, the original data information and / or the wake-up indication information can be mapped onto the OOK symbol of the superimposed OFDM sequence. Taking the first signal as LP-WUS as an example, the original load of the wake-up indication information of LP-WUS is X bits, and the wake-up indication information is used to indicate the wake-up of the UE, or UE group, or UE subgroup. After CRC addition and encoding processing, the number of bits actually subjected to OOK modulation changes from X to Y. At this time, an OFDM sequence resource pool can be constructed based on multiple OFDM sequences, and the index information of each OFDM sequence in the OFDM sequence resource pool is used to map a value of the X bits. For example, there are 2 X OFDM sequences, where there is a one-to-one mapping relationship between the OFDM sequence and the value of X. For example, X=2, there are 2 X =4 OFDM sequences, the OFDM sequence with an index of 1 has a mapping relationship with the wake-up indication information corresponding to sequence 00, the OFDM sequence with an index of 2 has a mapping relationship with the wake-up indication information corresponding to sequence 01, the OFDM sequence with an index of 3 has a mapping relationship with the wake-up indication information corresponding to sequence 10, and the OFDM sequence with an index of 4 has a mapping relationship with the wake-up indication information corresponding to sequence 11.

[0147] In some embodiments, the terminal device can receive the LP-WUS signal through envelope detection, and obtain the original wake-up indication information payload of the LP-WUS through demodulation, decoding, and other processing to determine the wake-up indication information of the UE or UE group or UE subgroup.

[0148] In some embodiments, a terminal device can perform sequence correlation detection on the entire LP-WUS signal through sequence detection. Since the same sequence is transmitted on all OOK-on symbols, the terminal can combine and process the OFDM sequences superimposed on multiple OOK-on symbols during sequence detection, thereby improving sequence detection performance. When the terminal detects OFDM sequence k, it can determine the wake-up indication information for the UE, UE group, or UE subgroup based on the X-bit payload associated with OFDM sequence k.

[0149] In some embodiments, multiple OFDM sequences in the OFDM sequence resource pool may also be mapped to various values ​​of Y, which will not be described in detail in this application.

[0150] Through the above method, the same OFDM sequence is mapped onto each OOK symbol, and the terminal device can determine the OFDM sequence superimposed on the first signal based on at least one OOK symbol, thereby improving the receiving performance of the receiver.

[0151] Method 2: Each first time domain unit in the first time domain unit set is superimposed with the same OFDM sequence for OOK modulation, and the first time domain unit set includes at least one first time domain unit.

[0152] In some embodiments, the first time domain unit set includes time domain units corresponding to OFDM symbols. In some embodiments, the first time domain unit set includes time domain units corresponding to one or more OFDM symbols. In some embodiments, the time domain units corresponding to one OFDM symbol are referred to as a first time domain unit set, and the time domain units corresponding to different OFDM symbols are referred to as different first time domain unit sets.

[0153] In some embodiments, the first signal may be modulated using an OOK-1 modulation scheme or an OOK-4 modulation scheme, which is not limited in this application.

[0154] OOK-1 modulation mode: Each OFDM symbol transmits 1 bit of information. In this case, each OFDM symbol can be OOK-on or OOK-off modulation symbols. In the first signal transmission process, the same OFDM sequence can be transmitted, similar to the above method 1, and this application will not be repeated here.

[0155] OOK-4 modulation mode: One OFDM symbol can transmit M bits, that is, M OOK symbols. Combined with this signal transmission characteristic, OFDM sequences can be superimposed on each OFDM symbol.

[0156] That is, for OOK-4 modulation, the same OFDM sequence can be superimposed on each OOK symbol transmitted in the OFDM symbol time domain. Alternatively, taking the configuration of M as an example, the same OFDM sequence can be superimposed on each of the M OOK symbols.

[0157] In some embodiments, in the first set of time domain units, only OOK-on symbols (OOK symbols after "1" modulation) are superimposed with an OFDM sequence. For example, as shown in FIG8 , the same OFDM sequence is superimposed on the OOK symbols in an OFDM symbol, and in each OFDM symbol, the OFDM sequence is mapped only to the OOK-on symbols. No OFDM sequence is superimposed on the OOK-off symbols, or it is assumed that the OOK-off symbols are superimposed with an OFDM sequence with zero power.

[0158] In some embodiments, the OFDM sequence is associated with first information transmitted within the first set of time domain units.

[0159] In some embodiments, the first information is one of the following information transmitted within the first set of time domain units:

[0160] Original information bit sequence;

[0161] Bit sequence before encoding;

[0162] Encoded bit sequence;

[0163] In case of multi-level coding, the first level encodes the bit sequence before coding;

[0164] In case of multi-level coding, the bit sequence after the first level coding;

[0165] In multi-level encoding, the bit sequence before the last level encoding;

[0166] In multi-level encoding, the bit sequence after the last level of encoding.

[0167] In some embodiments, the OFDM sequence carries information, and each OFDM sequence is associated with a bit sequence with a payload of M (one OFDM symbol transmits M OOK symbols).

[0168] Taking M=4 as an example, an OFDM symbol can transmit M=4 bits of information in the time domain length, so 2 4= 16 OFDM sequences are associated with bit sequences from 0000 to 1111. Thus, if a receiver uses envelope detection, it can determine the M = 4 bits of information transmitted in an OFDM symbol. Alternatively, using sequence correlation, the value of the associated M = 4 bits can be determined based on the detected sequence. In some embodiments, for all-0 combinations, such as 0000, since these are OOK-off symbols, no OFDM sequence is transmitted. That is, no sequence is detected during detection at the receiver.

[0169] In some embodiments, the present application does not limit the encoding method used for the first signal. Taking Manchester encoding as an example, M=4, the time domain length of an OFDM symbol can transmit M=4 bits of information, but the original data information is only M / 2=2 bits. At this time, the actual bit value of an OFDM symbol for OOK modulation is no longer 0000 to 1111, but only 2 M / 2 In this case, 0101, 0110, 1010, 1001, only 2 M / 2 =2 4 / 2 = 4 sequences, the OFDM sequence can be mapped to the original data information; however, the same feature is that one OFDM sequence is associated with a bit sequence with a payload of M. That is, the four OFDM sequences are associated with 0101, 0110, 1010, and 1001 respectively.

[0170] In some embodiments, when Manchester encoding is used, one OFDM symbol transmits M OOK symbols, that is, M bits of information. However, only M / 2 original data information (or data bits before encoding) is associated. Thus, when envelope detection is used to obtain M bit values, after the corresponding Manchester decoding process, only M / 2 bits of original information are recovered. Therefore, each OFDM sequence can be directly associated with a bit sequence with a payload of M / 2 (one OFDM symbol transmits M OOK symbols, and the actual data is M / 2 bits).

[0171] In some embodiments, the superimposed OFDM sequences of the first time domain units in different first time domain unit sets are independent of each other.

[0172] In some embodiments, the OFDM sequences superimposed on the first time domain units in different sets of first time domain units are different. In some embodiments, the OFDM sequences superimposed on the first time domain units in two adjacent sets of first time domain units are different; and the OFDM sequences superimposed on the first time domain units in non-adjacent sets of first time domain units may be the same.

[0173] In some embodiments, the number of OFDM sequences is determined based on the number of first time domain units included in the first time domain unit set. In some embodiments, the number of first time domain units included in a first time domain unit set may be configured by a network device or may be predefined, which is not limited in this application.

[0174] In some embodiments, the number of OFDM sequences is determined based on the number of bits transmitted in the first time domain unit set. In some embodiments, the number of bits transmitted in a first time domain unit set may be configured by a network device or may be predefined, which is not limited in this application.

[0175] In some embodiments, the number of OFDM sequences is determined based on a maximum number of first time domain units included in the first set of time domain units. In some embodiments, the number of OFDM sequences is determined based on a maximum number of bits transmitted in the first set of time domain units.

[0176] In some embodiments, the number of bits required to transmit the first signal is different under different circumstances. Therefore, the maximum number of first time domain units included in a first time domain unit set, or the maximum number of bits transmitted within the first time domain unit set, can be determined, and the number of OFDM sequences can be determined based on this. In this way, multiple OFDM sequences can be mapped one-to-one with the first information transmitted within the first time domain unit set under different circumstances. Exemplarily, when Manchester encoding is performed, the maximum number of OFDM sequences required can be determined based on Mmax, that is, 2^(Mmax / 2) sequences. The OFDM sequence resource pool is determined based on Mmax, consisting of 2^(Mmax / 2) sequences.

[0177] In some embodiments, the number of OFDM sequences in the OFDM sequence resource pool may be determined based on the maximum number of the first time domain unit. For example, if Mmax=8, 16 OFDM sequences may be determined. Taking Manchester encoding as an example:

[0178] When M=2, the time domain length of one OFDM symbol only transmits 2 OOK symbols, 1 bit of original information:

[0179] -0(01),1(10)

[0180] When M=4, the time domain length of one OFDM symbol only transmits 4 OOK symbols, 2 bits of original information: 00~11

[0181] -00(0101), 01(0110), 10(1001), 11(1010)

[0182] When M=8, the time domain length of one OFDM symbol only transmits 8 OOK symbols, 4 bits of original information: 0000~1111

[0183] -0000(01010101), 0001(01010110)…., 1111(10101010)

[0184] When M=2, the first 2 of the 16 OFDM sequences are used. M / 2 =2 sequences;

[0185] When M=4, the first 2 of the 16 OFDM sequences are used. M / 2 =4 sequences;

[0186] And so on.

[0187] When M = 1, only one OFDM sequence is needed. One OFDM symbol transmits only one OOK symbol, so one OFDM sequence is sufficient. This can be considered an OOK-1 modulation scheme.

[0188] In the above example, the mapping relationship between the OFDM sequence and the first information is represented by [OFDM sequence index (bit sequence)]. The mapping relationship between the OFDM sequence and the first information can also be represented by a table. This application does not limit this. The above example only illustrates one possible way of the OFDM sequence resource pool. When the value of M is different, the method for determining the OFDM sequence used is not limited by this application. For example, when M=2, 2 sequences are randomly selected from 16 OFDM sequences.

[0189] In some embodiments, the number of bits transmitted in the first set of time domain units is the number of bits of the first information.

[0190] In some embodiments, the number of bits transmitted in the first set of time domain units is the number of bits of one of the following information:

[0191] Original information bit sequence;

[0192] Bit sequence before encoding;

[0193] Encoded bit sequence;

[0194] In case of multi-level coding, the first level encodes the bit sequence before coding;

[0195] In case of multi-level coding, the bit sequence after the first level coding;

[0196] In multi-level encoding, the bit sequence before the last level encoding;

[0197] In multi-level encoding, the bit sequence after the last level of encoding.

[0198] In some embodiments, the OFDM sequence and the information transmitted on the first set of time domain units have a one-to-one mapping relationship.

[0199] Exemplarily, the first time domain unit set includes M first time domain units. Taking M=2 and Manchester encoding as an example, one OFDM symbol time domain length transmits only 2 OOK symbols and 1 original bit of information. The OFDM sequence with index 0 is mapped to the 01-bit sequence (first information), and the OFDM sequence with index 1 is mapped to the 10-bit sequence (first information).

[0200] Through the above method, the same OFDM sequence is mapped on each OFDM symbol. The terminal device can determine the OFDM sequence superimposed with the first signal based on at least one OOK symbol within the OFDM symbol, thereby improving the receiving performance of the receiver.

[0201] Method three: Each first time domain unit in the second time domain unit set is superimposed with the same OFDM sequence for OOK modulation, and the second time domain unit set includes P first time domain units, or the second time domain unit set includes P first time domain unit sets, and the first time domain unit set includes at least one first time domain unit, and P is a positive integer.

[0202] In some embodiments, the second time domain unit set includes P first time domain units, and each first time domain unit in the second time domain unit set is superimposed with the same OFDM sequence for OOK modulation.

[0203] In some embodiments, the second time domain unit set includes P first time domain unit sets, and each first time domain unit in the second time domain unit set is superimposed with the same OFDM sequence for OOK modulation.

[0204] In some embodiments, the value of P is predefined; or,

[0205] The value of P is configured by the network device; or,

[0206] The value of P is determined based on the number of bits of the first signal before encoding; or,

[0207] The value of P is determined based on the number of bits after encoding of the first signal.

[0208] If the OOK-4 modulation method is adopted, taking an OFDM symbol that can transmit M=4 bits and the Manchester coding method as an example, please refer to FIG. 9 .

[0209] If P is the number of bits before encoding, for example, P = 4, the same OFDM sequence is used for superposition during the transmission of 4 information bits. This corresponds to an 8-bit encoded bit sequence, that is, 8 OOK symbols and 2 OFDM symbols. The final result is that when receiving the LP-WUS signal, the same OFDM sequence is superimposed on every two OFDM symbols. When the terminal performs sequence correlation, it uses two OFDM symbols as a time window.

[0210] If P is the number of bits after coding (the number of bits before modulation), taking P=4 as an example, the same OFDM sequence is used for superposition during the transmission of 4 bits, corresponding to 4 OOK symbols and 1 OFDM symbol. The final result is that when receiving the LP-WUS signal, the same OFDM sequence is superimposed on each OFDM symbol. When the terminal performs sequence correlation, it is performed with 1 OFDM as a time window.

[0211] If P is the number of OFDM symbols, for example, P = 4, the same OFDM sequence is superimposed on four consecutive OFDM symbols during LP-WUS transmission, corresponding to 16 OOK symbols and four OFDM symbols. The final result is that when receiving the LP-WUS signal, the same OFDM sequence is superimposed on every four OFDM symbols. When the terminal performs sequence correlation, it uses four OFDM symbols as a time window.

[0212] If P is the number of OOK symbols, for example, P = 4, the same OFDM sequence is superimposed on one OFDM symbol during LP-WUS transmission, corresponding to four OOK symbols and one OFDM symbol. The final result is that when receiving the LP-WUS signal, the same OFDM sequence is superimposed on each OFDM symbol. When the terminal performs sequence correlation, one OFDM symbol is used as a time window.

[0213] If OOK-1 modulation is used, the value of P can be considered to be the number of OOK symbols, or the number of OOK-on symbols. Referring to Figure 9, if P is the number of OOK symbols, for example, P = 4, then during LP-WUS transmission, the same OFDM sequence is superimposed on four OFDM symbols, corresponding to four OOK symbols and four OFDM symbols. The final result is that when receiving the LP-WUS signal, the same OFDM sequence is superimposed on each OFDM symbol. When the terminal performs sequence correlation, four OFDM symbols form a time window.

[0214] In some embodiments, the OFDM sequence is associated with second information transmitted within the second set of time domain units.

[0215] In some embodiments, the second information is one of the following information transmitted in the second set of time domain units:

[0216] Original information bit sequence;

[0217] Bit sequence before encoding;

[0218] Encoded bit sequence;

[0219] In case of multi-level coding, the first level encodes the bit sequence before coding;

[0220] In case of multi-level coding, the bit sequence after the first level coding;

[0221] In multi-level encoding, the bit sequence before the last level encoding;

[0222] In multi-level encoding, the bit sequence after the last level of encoding.

[0223] In some embodiments, the superimposed OFDM sequences of the first time domain units in different sets of second time domain units are independent of each other.

[0224] In some embodiments, the OFDM sequences superimposed on the first time domain units in different sets of second time domain units are different. In some embodiments, the OFDM sequences superimposed on the first time domain units in two adjacent sets of second time domain units are different; and the OFDM sequences superimposed on the first time domain units in non-adjacent sets of second time domain units may be the same.

[0225] In some embodiments, the number of OFDM sequences is determined based on the number of first time domain units included in the second set of time domain units.

[0226] In some embodiments, the number of OFDM sequences is determined based on the number of bits transmitted within the second set of time domain units.

[0227] In some embodiments, the number of OFDM sequences is determined based on the number of bits of the second information.

[0228] In some embodiments, the number of bits transmitted in the second set of time domain units is the number of bits of one of the following information:

[0229] Original information bit sequence;

[0230] Bit sequence before encoding;

[0231] Encoded bit sequence;

[0232] In case of multi-level coding, the first level encodes the bit sequence before coding;

[0233] In case of multi-level coding, the bit sequence after the first level coding;

[0234] In multi-level encoding, the bit sequence before the last level encoding;

[0235] In multi-level encoding, the bit sequence after the last level of encoding.

[0236] In some embodiments, the OFDM sequence and the information transmitted on the second set of time domain units have a one-to-one mapping relationship.

[0237] Similarly, in this embodiment, an OFDM sequence resource pool may also be established. For how to determine the OFDM sequence resource pool, reference may be made to the description of the above-mentioned method 2, which will not be described in detail in this application.

[0238] In some embodiments, the number of OFDM sequences in the OFDM sequence resource pool may be determined based on the number of bits of the second information, or may be determined based on the number of first time domain units included in the second time domain unit set.

[0239] Through the above method, the same OFDM sequence is mapped on every P OFDM symbols or every P OOK symbols. The terminal device can determine the OFDM sequence superimposed on the first signal based on at least one OOK symbol, or based on at least one OFDM symbol, thereby improving the receiving performance of the receiver.

[0240] Method 4: In the third time domain unit set, an OFDM sequence is superimposed to perform OOK modulation. The third time domain unit set includes at least one first time domain unit, wherein each first time domain unit is respectively associated with an OFDM subsequence of the superimposed OFDM sequence in the third time domain unit set.

[0241] In some embodiments, OFDM subsequences superimposed on the first time domain unit in the third set of time domain units may be combined to obtain a complete OFDM sequence.

[0242] In some embodiments, the third time domain unit set is a time domain unit corresponding to an OFDM symbol. In some embodiments, the third time domain unit set includes Q first time domain units, where Q is a positive integer. The following description will be made using the example of the third time domain unit set being a time domain unit corresponding to an OFDM symbol.

[0243] In some embodiments, the first signal may be modulated using an OOK-1 modulation scheme or an OOK-4 modulation scheme, which is not limited in this application.

[0244] OOK-1 modulation mode: Each OFDM symbol transmits 1 bit of information. In this case, each OFDM symbol can be OOK-on or OOK-off modulation symbols. In the first signal transmission process, the same OFDM sequence can be transmitted, similar to the above method 1, and this application will not be repeated here.

[0245] OOK-4 modulation mode: Each OFDM symbol transmits M bits of information, that is, M OOK symbols are transmitted. Combined with this signal transmission characteristic, OFDM sequences can be superimposed on each OFDM symbol.

[0246] In some embodiments, in the third set of time domain units, only OOK-on symbols (OOK symbols modulated with "1") are superimposed with an OFDM sequence. For example, as shown in FIG10 , within each OFDM symbol, an OFDM subsequence is mapped only to the OOK-on symbol. No OFDM subsequence is superimposed on the OOK-off symbol, or the OOK-off symbol is considered to be superimposed with an OFDM sequence of zero power.

[0247] In some embodiments, the OFDM sequence is associated with third information transmitted within a third set of time domain units.

[0248] In some embodiments, the third information is one of the following information transmitted in the third time domain unit set:

[0249] Original information bit sequence;

[0250] Bit sequence before encoding;

[0251] Encoded bit sequence;

[0252] In case of multi-level coding, the first level encodes the bit sequence before coding;

[0253] In case of multi-level coding, the bit sequence after the first level coding;

[0254] In multi-level encoding, the bit sequence before the last level encoding;

[0255] In multi-level encoding, the bit sequence after the last level of encoding.

[0256] In some embodiments, each first time domain unit in the third time domain set is superimposed with a different OFDM subsequence.

[0257] In some embodiments, the superimposed OFDM sequences of different third time domain unit sets are independent of each other.

[0258] In some embodiments, the first time domain units in different third time domain unit sets have different superimposed OFDM sequences. In some embodiments, the first time domain units in two adjacent third time domain unit sets have different superimposed OFDM sequences; and the first time domain units in non-adjacent third time domain unit sets may have the same superimposed OFDM sequences.

[0259] In some embodiments, the number of OFDM sequences is determined based on the number of first time domain units included in the third set of time domain units.

[0260] In some embodiments, the number of OFDM sequences is determined based on the number of bits transmitted within the third set of time domain units.

[0261] In some embodiments, the number of bits transmitted in the third set of time domain units is the number of bits of one of the following information:

[0262] Original information bit sequence;

[0263] Bit sequence before encoding;

[0264] Encoded bit sequence;

[0265] In case of multi-level coding, the first level encodes the bit sequence before coding;

[0266] In case of multi-level coding, the bit sequence after the first level coding;

[0267] In multi-level encoding, the bit sequence before the last level encoding;

[0268] In multi-level encoding, the bit sequence after the last level of encoding.

[0269] In some embodiments, the OFDM sequence and the information transmitted on the third set of time domain units have a one-to-one mapping relationship.

[0270] In some embodiments, the content about the OFDM sequence in this embodiment can refer to the introduction of the above method 2. The difference from method 2 is that in this method, an OFDM subsequence is superimposed on each OOK symbol.

[0271] This application does not limit how to determine the OFDM subsequence superimposed on the OOK symbol.

[0272] In some embodiments, within a third time domain unit set, the OFDM subsequences superimposed on different first time domain units are different, and the OFDM subsequences within a third time domain unit set can be combined to obtain a complete OFDM sequence. Exemplarily, the OFDM sequence can be evenly divided based on the number of OOK symbols, regardless of whether the OOK symbol is an OOK-on symbol or an OOK-off symbol. For example, if M=4, the OFDM sequence is evenly divided into 4 parts, and an OFDM subsequence is superimposed on each OOK symbol. Exemplarily, the OFDM sequence can be evenly divided based on the number of OOK-on symbols. For example, if M=4, and there are 3 OOK-on symbols on one OFDM symbol, the OFDM sequence is evenly divided into 3 parts, and 1 part is superimposed on each OOK-on symbol. Of course, the OFDM subsequences can also be randomly divided, and this application does not limit this.

[0273] In some embodiments, the OFDM subsequences within a third set of time domain units may be identical. For example, regardless of the number of OOK symbols or OOK-on symbols included in the third set of time domain units, the OFDM sequence is evenly divided into two parts, and the two OFDM subsequences are superimposed on the OOK symbols in the order of the two OFDM subsequences.

[0274] Through the above method, the same OFDM sequence is mapped on each OFDM symbol or each Q OOK symbols. The terminal device can determine the OFDM sequence superimposed on the first signal based on at least one OOK symbol, or based on at least one OFDM symbol, thereby improving the receiving performance of the receiver.

[0275] In the above method embodiments, the technical solution of this application is described only from the perspective of the interaction between a terminal device and a network device. The above steps performed by the terminal device can be independently implemented as an information transmission method on the terminal device side, and the above steps performed by the network device can be independently implemented as an information transmission method on the network device side. In addition, the embodiments provided herein can be arbitrarily combined to form new embodiments, which are all within the scope of protection of this application.

[0276] The following are device embodiments of the present application, which can be used to implement the method embodiments of the present application. For details not disclosed in the device embodiments of the present application, please refer to the method embodiments of the present application.

[0277] Please refer to Figure 11, which shows a block diagram of an information transmission device provided by one embodiment of the present application. This device has the functions of implementing the above-mentioned information transmission method example. The functions can be implemented by hardware or by hardware executing corresponding software. This device can be the terminal device described above, or it can be provided in a terminal device. As shown in Figure 11, the device 1100 may include: a receiving module 1110.

[0278] The receiving module 1110 is used to receive a first signal, which is modulated by on-off keying (OOK) by superimposing an orthogonal frequency division multiplexing (OFDM) sequence. The first signal is transmitted on at least one first time domain unit, and each first time domain unit is associated with an OFDM sequence.

[0279] In some embodiments, the first time domain unit is a time domain unit corresponding to an OOK symbol.

[0280] In some embodiments, the OOK symbol is modulated by bit 1; or,

[0281] The OOK symbol is modulated by bit 0.

[0282] In some embodiments, the same OFDM sequence is superimposed on the at least one first time domain unit to perform the OOK modulation.

[0283] In some embodiments, the OFDM sequence is associated with information carried by the OOK symbols.

[0284] In some embodiments, each of the first time domain units in the first time domain unit set is superimposed with the same OFDM sequence to perform the OOK modulation, and the first time domain unit set includes at least one first time domain unit.

[0285] In some embodiments, the first set of time domain units includes time domain units corresponding to OFDM symbols.

[0286] In some embodiments, the OFDM sequence is associated with first information transmitted within the first set of time domain units.

[0287] In some embodiments, the first information is one of the following information transmitted within the first time domain unit set:

[0288] Original information bit sequence;

[0289] Bit sequence before encoding;

[0290] Encoded bit sequence;

[0291] In case of multi-level coding, the first level encodes the bit sequence before coding;

[0292] In case of multi-level coding, the bit sequence after the first level coding;

[0293] In multi-level encoding, the bit sequence before the last level encoding;

[0294] In multi-level encoding, the bit sequence after the last level of encoding.

[0295] In some embodiments, the superimposed OFDM sequences of the first time domain units in different sets of the first time domain units are independent of each other.

[0296] In some embodiments, the number of the OFDM sequences is determined based on the number of the first time domain units included in the first time domain unit set; or,

[0297] The number of the OFDM sequences is determined based on the number of bits transmitted in the first set of time domain units.

[0298] In some embodiments, the number of bits transmitted in the first set of time domain units is the number of bits of one of the following information:

[0299] Original information bit sequence;

[0300] Bit sequence before encoding;

[0301] Encoded bit sequence;

[0302] In case of multi-level coding, the first level encodes the bit sequence before coding;

[0303] In case of multi-level coding, the bit sequence after the first level coding;

[0304] In multi-level encoding, the bit sequence before the last level encoding;

[0305] In multi-level encoding, the bit sequence after the last level of encoding.

[0306] In some embodiments, the OFDM sequence has a one-to-one mapping relationship with the information transmitted on the first set of time domain units.

[0307] In some embodiments, each of the first time domain units in the second time domain unit set is respectively superimposed with the same OFDM sequence for OOK modulation, and the second time domain unit set includes P first time domain units, or the second time domain unit set includes P first time domain unit sets, and the first time domain unit set includes at least one first time domain unit, and P is a positive integer.

[0308] In some embodiments, the OFDM sequence is associated with second information transmitted within the second set of time domain units.

[0309] In some embodiments, the second information is one of the following information transmitted in the second time domain unit set:

[0310] Original information bit sequence;

[0311] Bit sequence before encoding;

[0312] Encoded bit sequence;

[0313] In case of multi-level coding, the first level encodes the bit sequence before coding;

[0314] In case of multi-level coding, the bit sequence after the first level coding;

[0315] In multi-level encoding, the bit sequence before the last level encoding;

[0316] In multi-level encoding, the bit sequence after the last level of encoding.

[0317] In some embodiments, the superimposed OFDM sequences of the first time domain units in different sets of the second time domain units are independent of each other.

[0318] In some embodiments, the value of P is predefined; or,

[0319] The value of P is configured by the network device; or,

[0320] The value of P is determined based on the number of bits of the first signal before encoding; or,

[0321] The value of P is determined based on the number of bits of the first signal after encoding.

[0322] In some embodiments, the number of the OFDM sequences is determined based on the number of the first time domain units included in the second time domain unit set; or,

[0323] The number of the OFDM sequences is determined based on the number of bits transmitted in the second set of time domain units.

[0324] In some embodiments, the number of bits transmitted in the second set of time domain units is the number of bits of one of the following information:

[0325] Original information bit sequence;

[0326] Bit sequence before encoding;

[0327] Encoded bit sequence;

[0328] In case of multi-level coding, the first level encodes the bit sequence before coding;

[0329] In case of multi-level coding, the bit sequence after the first level coding;

[0330] In multi-level encoding, the bit sequence before the last level encoding;

[0331] In multi-level encoding, the bit sequence after the last level of encoding.

[0332] In some embodiments, the OFDM sequence and the information transmitted on the second set of time domain units have a one-to-one mapping relationship.

[0333] In some embodiments, an OFDM sequence is superimposed within a third time domain unit set to perform the OOK modulation, and the third time domain unit set includes at least one of the first time domain units, wherein each of the first time domain units is respectively associated with an OFDM subsequence of the superimposed OFDM sequence within the third time domain unit set.

[0334] In some embodiments, the OFDM sequence is associated with third information transmitted within the third set of time domain units.

[0335] In some embodiments, the third information is one of the following information transmitted in the third time domain unit set:

[0336] Original information bit sequence;

[0337] Bit sequence before encoding;

[0338] Encoded bit sequence;

[0339] In case of multi-level coding, the first level encodes the bit sequence before coding;

[0340] In case of multi-level coding, the bit sequence after the first level coding;

[0341] In multi-level encoding, the bit sequence before the last level encoding;

[0342] In multi-level encoding, the bit sequence after the last level of encoding.

[0343] In some embodiments, each of the first time domain units in the third time domain set is superimposed with a different OFDM subsequence.

[0344] In some embodiments, the superimposed OFDM sequences of different sets of the third time domain units are independent of each other.

[0345] In some embodiments, the number of the OFDM sequences is determined based on the number of the first time domain units included in the third time domain unit set; or,

[0346] The number of the OFDM sequences is determined based on the number of bits transmitted in the third set of time domain units.

[0347] In some embodiments, the number of bits transmitted in the third set of time domain units is the number of bits of one of the following information:

[0348] Original information bit sequence;

[0349] Bit sequence before encoding;

[0350] Encoded bit sequence;

[0351] In case of multi-level coding, the first level encodes the bit sequence before coding;

[0352] In case of multi-level coding, the bit sequence after the first level coding;

[0353] In multi-level encoding, the bit sequence before the last level encoding;

[0354] In multi-level encoding, the bit sequence after the last level of encoding.

[0355] In some embodiments, the OFDM sequence has a one-to-one mapping relationship with the information transmitted on the third time domain unit set.

[0356] In some embodiments, the terminal device detects the first signal using envelope detection; or

[0357] The terminal device detects the first signal by using a sequence correlation detection method.

[0358] In some embodiments, when the terminal device adopts the sequence correlation detection, the apparatus further includes a processing module (not shown in the figure).

[0359] a processing module, configured to determine the OFDM sequence superimposed with the first signal;

[0360] The processing module is also used to determine the information transmitted in the time domain unit set based on the mapping relationship between the OFDM sequence and the information transmitted in the time domain unit set, where the time domain unit set is the first time domain unit set, or the time domain unit set is the second time domain unit set, or the time domain unit set is the third time domain unit set.

[0361] In some embodiments, the OFDM sequence is generated by at least one of the following sequences: a ZC sequence, an m sequence, a gold sequence, and a PD sequence.

[0362] In some embodiments, the OFDM sequence superimposed on the first signal is predefined; or,

[0363] The OFDM sequence superimposed on the first signal is configured by a network device.

[0364] The technical solution provided in the embodiment of the present application provides a design method for a first signal. When the first signal is transmitted based on OOK modulation, an OFDM sequence is superimposed on the first time domain unit, so that receivers with different capabilities can use different methods to receive the first signal, thereby ensuring the accuracy of signal reception by the terminal device and improving the stability of the communication system.

[0365] Please refer to Figure 12, which shows a block diagram of an information transmission device provided by one embodiment of the present application. This device has the functions of implementing the above-mentioned information transmission method example. The functions can be implemented by hardware or by hardware executing corresponding software. The device can be the network device described above, or it can be set in a network device. As shown in Figure 12, the device 1200 can include: a sending module 1210.

[0366] The sending module 1210 is used to send a first signal, which is modulated by on-off keying (OOK) by superimposing an orthogonal frequency division multiplexing (OFDM) sequence. The first signal is transmitted on at least one first time domain unit, and each first time domain unit is associated with an OFDM sequence.

[0367] In some embodiments, the first time domain unit is a time domain unit corresponding to an OOK symbol.

[0368] In some embodiments, the OOK symbol is modulated by bit 1; or,

[0369] The OOK symbol is modulated by bit 0.

[0370] In some embodiments, the same OFDM sequence is superimposed on the at least one first time domain unit to perform the OOK modulation.

[0371] In some embodiments, the OFDM sequence is associated with information carried by the OOK symbols.

[0372] In some embodiments, each of the first time domain units in the first time domain unit set is superimposed with the same OFDM sequence to perform the OOK modulation, and the first time domain unit set includes at least one first time domain unit.

[0373] In some embodiments, the first set of time domain units includes time domain units corresponding to OFDM symbols.

[0374] In some embodiments, the OFDM sequence is associated with first information transmitted within the first set of time domain units.

[0375] In some embodiments, the first information is one of the following information transmitted within the first time domain unit set:

[0376] Original information bit sequence;

[0377] Bit sequence before encoding;

[0378] Encoded bit sequence;

[0379] In case of multi-level coding, the first level encodes the bit sequence before coding;

[0380] In case of multi-level coding, the bit sequence after the first level coding;

[0381] In multi-level encoding, the bit sequence before the last level encoding;

[0382] In multi-level encoding, the bit sequence after the last level of encoding.

[0383] In some embodiments, the superimposed OFDM sequences of the first time domain units in different sets of the first time domain units are independent of each other.

[0384] In some embodiments, the number of the OFDM sequences is determined based on the number of the first time domain units included in the first time domain unit set; or,

[0385] The number of the OFDM sequences is determined based on the number of bits transmitted in the first set of time domain units.

[0386] In some embodiments, the number of bits transmitted in the first set of time domain units is the number of bits of one of the following information:

[0387] Original information bit sequence;

[0388] Bit sequence before encoding;

[0389] Encoded bit sequence;

[0390] In case of multi-level coding, the first level encodes the bit sequence before coding;

[0391] In case of multi-level coding, the bit sequence after the first level coding;

[0392] In multi-level encoding, the bit sequence before the last level encoding;

[0393] In multi-level encoding, the bit sequence after the last level of encoding.

[0394] In some embodiments, the OFDM sequence has a one-to-one mapping relationship with the information transmitted on the first set of time domain units.

[0395] In some embodiments, each of the first time domain units in the second time domain unit set is respectively superimposed with the same OFDM sequence for OOK modulation, and the second time domain unit set includes P first time domain units, or the second time domain unit set includes P first time domain unit sets, and the first time domain unit set includes at least one first time domain unit, and P is a positive integer.

[0396] In some embodiments, the OFDM sequence is associated with second information transmitted within the second set of time domain units.

[0397] In some embodiments, the second information is one of the following information transmitted in the second time domain unit set:

[0398] Original information bit sequence;

[0399] Bit sequence before encoding;

[0400] Encoded bit sequence;

[0401] In case of multi-level coding, the first level encodes the bit sequence before coding;

[0402] In case of multi-level coding, the bit sequence after the first level coding;

[0403] In multi-level encoding, the bit sequence before the last level encoding;

[0404] In multi-level encoding, the bit sequence after the last level of encoding.

[0405] In some embodiments, the superimposed OFDM sequences of the first time domain units in different sets of the second time domain units are independent of each other.

[0406] In some embodiments, the value of P is configured by the network device; or,

[0407] The value of P is determined based on the number of bits of the first signal before encoding; or,

[0408] The value of P is determined based on the number of bits of the first signal after encoding.

[0409] In some embodiments, the number of the OFDM sequences is determined based on the number of the first time domain units included in the second time domain unit set; or,

[0410] The number of the OFDM sequences is determined based on the number of bits transmitted in the second set of time domain units.

[0411] In some embodiments, the number of bits transmitted in the second set of time domain units is the number of bits of one of the following information:

[0412] Original information bit sequence;

[0413] Bit sequence before encoding;

[0414] Encoded bit sequence;

[0415] In case of multi-level coding, the first level encodes the bit sequence before coding;

[0416] In case of multi-level coding, the bit sequence after the first level coding;

[0417] In multi-level encoding, the bit sequence before the last level encoding;

[0418] In multi-level encoding, the bit sequence after the last level of encoding.

[0419] In some embodiments, the OFDM sequence and the information transmitted on the second set of time domain units have a one-to-one mapping relationship.

[0420] In some embodiments, an OFDM sequence is superimposed within a third time domain unit set to perform the OOK modulation, and the third time domain unit set includes at least one of the first time domain units, wherein each of the first time domain units is respectively associated with an OFDM subsequence of the superimposed OFDM sequence within the third time domain unit set.

[0421] In some embodiments, the OFDM sequence is associated with third information transmitted within the third set of time domain units.

[0422] In some embodiments, the third information is one of the following information transmitted in the third time domain unit set:

[0423] Original information bit sequence;

[0424] Bit sequence before encoding;

[0425] Encoded bit sequence;

[0426] In case of multi-level coding, the first level encodes the bit sequence before coding;

[0427] In case of multi-level coding, the bit sequence after the first level coding;

[0428] In multi-level encoding, the bit sequence before the last level encoding;

[0429] In multi-level encoding, the bit sequence after the last level of encoding.

[0430] In some embodiments, each of the first time domain units in the third time domain set is superimposed with a different OFDM subsequence.

[0431] In some embodiments, the superimposed OFDM sequences of different sets of the third time domain units are independent of each other.

[0432] In some embodiments, the number of the OFDM sequences is determined based on the number of the first time domain units included in the third time domain unit set; or,

[0433] The number of the OFDM sequences is determined based on the number of bits transmitted in the third set of time domain units.

[0434] In some embodiments, the number of bits transmitted in the third set of time domain units is the number of bits of one of the following information:

[0435] Original information bit sequence;

[0436] Bit sequence before encoding;

[0437] Encoded bit sequence;

[0438] In case of multi-level coding, the first level encodes the bit sequence before coding;

[0439] In case of multi-level coding, the bit sequence after the first level coding;

[0440] In multi-level encoding, the bit sequence before the last level encoding;

[0441] In multi-level encoding, the bit sequence after the last level of encoding.

[0442] In some embodiments, the OFDM sequence has a one-to-one mapping relationship with the information transmitted on the third time domain unit set.

[0443] In some embodiments, the terminal device detects the first signal using envelope detection; or

[0444] The terminal device detects the first signal by using a sequence correlation detection method.

[0445] In some embodiments, the OFDM sequence is generated by at least one of the following sequences: a ZC sequence, an m sequence, a gold sequence, and a PD sequence.

[0446] In some embodiments, the OFDM sequence superimposed on the first signal is predefined; or,

[0447] The OFDM sequence superimposed on the first signal is configured by a network device.

[0448] The technical solution provided in the embodiment of the present application provides a design method for a first signal. When the first signal is transmitted based on OOK modulation, an OFDM sequence is superimposed on the first time domain unit, so that receivers with different capabilities can use different methods to receive the first signal, thereby ensuring the accuracy of signal reception by the terminal device and improving the stability of the communication system.

[0449] It should be noted that the device provided in the above embodiment only uses the division of the above-mentioned functional modules as an example to implement its functions. In actual applications, the above-mentioned functions can be assigned to different functional modules according to actual needs, that is, the content structure of the device can be divided into different functional modules to complete all or part of the functions described above.

[0450] Regarding the apparatus in the above embodiment, the specific manner in which each module performs operations has been described in detail in the embodiment of the method, and will not be elaborated here.

[0451] Please refer to Figure 13, which shows a schematic diagram of the structure of a terminal device provided by one embodiment of the present application. The terminal device 1300 may include: a processor 1301, a transceiver 1302, and a memory 1303. The transceiver 1302 is used to implement a transmission or reception function, such as the functions of the aforementioned receiving module 1120, and the processor 1301 may be used to implement other processing functions or control transmission and / or reception, such as the functions of the aforementioned processing module 1110.

[0452] The processor 1301 includes one or more processing cores. The processor 1301 executes various functional applications and information processing by running software programs and modules.

[0453] The transceiver 1302 may include a receiver and a transmitter. For example, the receiver and the transmitter may be implemented as the same wireless communication component, which may include a wireless communication chip and a radio frequency antenna.

[0454] The memory 1303 may be connected to the processor 1301 and the transceiver 1302 .

[0455] The memory 1303 may be used to store a computer program executed by the processor, and the processor 1301 is used to execute the computer program to implement each step in the above method embodiment.

[0456] In some embodiments, the transceiver 1302 is used to receive a first signal, which is modulated by on-off keying (OOK) by superimposing an orthogonal frequency division multiplexing (OFDM) sequence. The first signal is transmitted on at least one first time domain unit, and each first time domain unit is associated with an OFDM sequence.

[0457] For details not described in detail in this embodiment, please refer to the above embodiments and will not be described in detail here.

[0458] In addition, the memory can be implemented by any type of volatile or non-volatile storage device or a combination thereof, including but not limited to: magnetic or optical disks, electrically erasable programmable read-only memory, erasable programmable read-only memory, static access memory, read-only memory, magnetic memory, flash memory, and programmable read-only memory.

[0459] Please refer to Figure 14, which shows a schematic diagram of the structure of a network device provided by an embodiment of the present application. The network device 1400 may include: a processor 1401, a transceiver 1402, and a memory 1403. The transceiver 1402 is used to implement the functions of the sending module 1210 described above.

[0460] The processor 1401 includes one or more processing cores, and executes various functional applications and information processing by running software programs and modules. The processor 1401 is used to execute other steps except the sending and receiving steps executed by the network device in the above method embodiment.

[0461] Transceiver 1402 may include a receiver and a transmitter. For example, the receiver and transmitter may be implemented as the same wireless communication component, which may include a wireless communication chip and a radio frequency antenna. Transceiver 1402 is configured to perform the sending and / or receiving steps performed by the network device in the above method embodiment.

[0462] The memory 1403 may be connected to the processor 1401 and the transceiver 1402 .

[0463] The memory 1403 may be used to store a computer program executed by the processor, and the processor 1401 is used to execute the computer program to implement each step in the above method embodiment.

[0464] In addition, the memory can be implemented by any type of volatile or non-volatile storage device or a combination thereof, including but not limited to: magnetic or optical disks, electrically erasable programmable read-only memory, erasable programmable read-only memory, static access memory, read-only memory, magnetic memory, flash memory, and programmable read-only memory.

[0465] In some embodiments, the transceiver 1402 is used to send a first signal, which is modulated by on-off keying (OOK) by superimposing an orthogonal frequency division multiplexing (OFDM) sequence. The first signal is transmitted on at least one first time domain unit, and each first time domain unit is associated with an OFDM sequence.

[0466] For details not described in detail in this embodiment, please refer to the above embodiments and will not be described in detail here.

[0467] An embodiment of the present application also provides a computer-readable storage medium, in which a computer program is stored, and the computer program is used to be executed by a processor to implement the above-mentioned information transmission method on the terminal device side, or to implement the above-mentioned information transmission method on the network device side. Optionally, the computer-readable storage medium may include: ROM (Read-Only Memory), RAM (Random-Access Memory), SSD (Solid State Drives) or optical disks, etc. Among them, random access memory may include ReRAM (Resistance Random Access Memory) and DRAM (Dynamic Random Access Memory).

[0468] An embodiment of the present application also provides a chip, which includes a programmable logic circuit and / or program instructions. When the chip is running, it is used to implement the above-mentioned information transmission method on the terminal device side, or to implement the above-mentioned information transmission method on the network device side.

[0469] An embodiment of the present application also provides a computer program product, which includes a computer program, which is stored in a computer-readable storage medium. A processor reads and executes the computer program from the computer-readable storage medium to implement the above-mentioned information transmission method on the terminal device side, or to implement the above-mentioned information transmission method on the network device side.

[0470] It should be understood that the "indication" mentioned in the embodiments of this application can be a direct indication, an indirect indication, or an indication of an association. For example, "A indicates B" can mean that A directly indicates B, for example, B can be obtained through A; it can also mean that A indirectly indicates B, for example, A indicates C, and B can be obtained through C; it can also mean that there is an association between A and B.

[0471] In the description of the embodiments of the present application, the term "corresponding" may indicate a direct or indirect correspondence between the two, or an association relationship between the two, or a relationship between indication and being indicated, configuration and being configured, etc.

[0472] In some embodiments of the present application, "predefined" may be implemented by pre-storing corresponding codes, tables, or other methods that can be used to indicate relevant information in a device (e.g., including a terminal device and an AP), and the present application does not limit the specific implementation method. For example, predefined may refer to information defined in a protocol.

[0473] In some embodiments of the present application, the "protocol" may refer to a standard protocol in the field of communications, for example, it may include an LTE protocol, a NR protocol, and related protocols used in future communication systems, and this application does not limit this.

[0474] In this document, "plurality" refers to two or more. "And / or" describes a relationship between associated objects, indicating that three possible relationships exist. For example, "A and / or B" can mean: A exists alone, A and B exist simultaneously, or B exists alone. The character " / " generally indicates an "or" relationship between the associated objects.

[0475] The term “greater than or equal to” mentioned herein may mean greater than or equal to, or greater than, and the term “less than or equal to” may mean less than or equal to, or less than.

[0476] In addition, the step numbers described in this document only illustrate a possible execution order between the steps. In some other embodiments, the above steps may not be executed in the order of the numbers, such as two steps with different numbers are executed at the same time, or two steps with different numbers are executed in the opposite order of the diagram. The embodiments of the present application are not limited to this.

[0477] Those skilled in the art will appreciate that in one or more of the above examples, the functions described in the embodiments of the present application can be implemented using hardware, software, firmware, or any combination thereof. When implemented using software, these functions can be stored in a computer-readable medium or transmitted as one or more instructions or codes on a computer-readable medium. Computer-readable media include computer storage media and communication media, wherein communication media include any media that facilitates the transmission of computer programs from one place to another. The storage medium can be any available medium that can be accessed by a general-purpose or special-purpose computer.

[0478] The above description is merely an exemplary embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present application shall be included in the scope of protection of the present application.

Claims

1. An information transmission method, characterized in that: The method is executed by a terminal device, and includes: A first signal is received, where the first signal is OOK modulated by superimposing an orthogonal frequency division multiplexing (OFDM) sequence, and the first signal is transmitted on at least one first time domain unit, where each first time domain unit is associated with an OFDM sequence.

2. The method according to claim 1, characterized in that The first time domain unit is a time domain unit corresponding to the OOK symbol.

3. The method according to claim 2, characterized in that The OOK symbol is modulated by bit 1; or, The OOK symbol is modulated by bit 0.

4. The method according to claim 2 or 3, characterized in that The same OFDM sequence is superimposed on the at least one first time domain unit to perform the OOK modulation.

5. The method according to any one of claims 2 to 4, characterized in that The OFDM sequence is associated with information carried by the OOK symbols.

6. The method according to claim 2, characterized in that Each of the first time domain units in the first time domain unit set is superimposed with the same OFDM sequence to perform the OOK modulation, and the first time domain unit set includes at least one first time domain unit.

7. The method according to claim 6, characterized in that The first time domain unit set includes time domain units corresponding to OFDM symbols.

8. The method according to claim 6 or 7, characterized in that The OFDM sequence is associated with first information transmitted within the first set of time domain units.

9. The method according to claim 8, characterized in that The first information is one of the following information transmitted in the first time domain unit set: Original information bit sequence; Bit sequence before encoding; Encoded bit sequence; In case of multi-level coding, the first level encodes the bit sequence before coding; In case of multi-level coding, the bit sequence after the first level coding; In multi-level encoding, the bit sequence before the last level encoding; In multi-level encoding, the bit sequence after the last level of encoding.

10. The method according to any one of claims 6 to 9, characterized in that The superimposed OFDM sequences of the first time domain units in different sets of the first time domain units are independent of each other.

11. The method according to any one of claims 6 to 10, characterized in that The number of the OFDM sequences is determined based on the number of the first time domain units included in the first time domain unit set; or, The number of the OFDM sequences is determined based on the number of bits transmitted in the first set of time domain units.

12. The method according to claim 11, characterized in that The number of bits transmitted in the first time domain unit set is the number of bits of one of the following information: Original information bit sequence; Bit sequence before encoding; Encoded bit sequence; In case of multi-level coding, the first level encodes the bit sequence before coding; In case of multi-level coding, the bit sequence after the first level coding; In multi-level encoding, the bit sequence before the last level encoding; In multi-level encoding, the bit sequence after the last level of encoding.

13. The method according to claim 11 or 12, characterized in that The OFDM sequence and the information transmitted on the first time domain unit set have a one-to-one mapping relationship.

14. The method according to claim 2, characterized in that Each of the first time domain units in the second time domain unit set is respectively superimposed with the same OFDM sequence for OOK modulation, and the second time domain unit set includes P first time domain units, or the second time domain unit set includes P first time domain unit sets, and the first time domain unit set includes at least one first time domain unit, and P is a positive integer.

15. The method according to claim 14, characterized in that The OFDM sequence is associated with second information transmitted within the second set of time domain units.

16. The method according to claim 15, characterized in that The second information is one of the following information transmitted in the second time domain unit set: Original information bit sequence; Bit sequence before encoding; Encoded bit sequence; In case of multi-level coding, the first level encodes the bit sequence before coding; In case of multi-level coding, the bit sequence after the first level coding; In multi-level encoding, the bit sequence before the last level encoding; In multi-level encoding, the bit sequence after the last level of encoding.

17. The method according to any one of claims 14 to 16, characterized in that The superimposed OFDM sequences of the first time domain units in different sets of the second time domain units are independent of each other.

18. The method according to any one of claims 14 to 17, characterized in that The value of P is predefined; or, The value of P is configured by the network device; or, The value of P is determined based on the number of bits of the first signal before encoding; or, The value of P is determined based on the number of bits of the first signal after encoding.

19. The method according to any one of claims 14 to 18, characterized in that The number of the OFDM sequences is determined based on the number of the first time domain units included in the second time domain unit set; or, The number of the OFDM sequences is determined based on the number of bits transmitted in the second set of time domain units.

20. The method according to claim 19, characterized in that The number of bits transmitted in the second time domain unit set is the number of bits of one of the following information: Original information bit sequence; Bit sequence before encoding; Encoded bit sequence; In case of multi-level coding, the first level encodes the bit sequence before coding; In case of multi-level coding, the bit sequence after the first level coding; In multi-level encoding, the bit sequence before the last level encoding; In multi-level encoding, the bit sequence after the last level of encoding.

21. The method according to claim 19 or 20, characterized in that The OFDM sequence and the information transmitted on the second time domain unit set have a one-to-one mapping relationship.

22. The method according to claim 2, characterized in that In the third time domain unit set, an OFDM sequence is superimposed to perform the OOK modulation, and the third time domain unit set includes at least one of the first time domain units, wherein each of the first time domain units is respectively associated with the OFDM subsequence of the superimposed OFDM sequence in the third time domain unit set.

23. The method according to claim 22, characterized in that The OFDM sequence is associated with third information transmitted within the third set of time domain units.

24. The method according to claim 23, wherein The third information is one of the following information transmitted in the third time domain unit set: Original information bit sequence; Bit sequence before encoding; Encoded bit sequence; In case of multi-level coding, the first level encodes the bit sequence before coding; In case of multi-level coding, the bit sequence after the first level coding; In multi-level encoding, the bit sequence before the last level encoding; In multi-level encoding, the bit sequence after the last level of encoding.

25. The method according to any one of claims 22 to 24, characterized in that Each of the first time domain units in the third time domain set is superimposed with a different OFDM subsequence.

26. The method according to any one of claims 22 to 25, characterized in that The superimposed OFDM sequences of different sets of the third time domain units are independent of each other.

27. The method according to any one of claims 22 to 26, characterized in that The number of the OFDM sequences is determined based on the number of the first time domain units included in the third time domain unit set; or, The number of the OFDM sequences is determined based on the number of bits transmitted in the third set of time domain units.

28. The method according to claim 27, characterized in that The number of bits transmitted in the third time domain unit set is the number of bits of one of the following information: Original information bit sequence; Bit sequence before encoding; Encoded bit sequence; In case of multi-level coding, the first level encodes the bit sequence before coding; In case of multi-level coding, the bit sequence after the first level coding; In multi-level encoding, the bit sequence before the last level encoding; In multi-level encoding, the bit sequence after the last level of encoding.

29. The method according to any one of claims 27 or 28, characterized in that The OFDM sequence and the information transmitted on the third time domain unit set have a one-to-one mapping relationship.

30. The method according to any one of claims 1 to 29, characterized in that The terminal device detects the first signal by using envelope detection; or The terminal device detects the first signal by using a sequence correlation detection method.

31. The method according to claim 30, wherein In the case where the terminal device adopts the sequence correlation detection, the method further includes: Determining the OFDM sequence superimposed with the first signal; Based on the mapping relationship between the OFDM sequence and the information transmitted in the time domain unit set, the information transmitted in the time domain unit set is determined, the time domain unit set is the first time domain unit set, or the time domain unit set is the second time domain unit set, or the time domain unit set is the third time domain unit set.

32. The method according to any one of claims 1 to 31, characterized in that The OFDM sequence is generated by at least one of the following sequences: a ZC sequence, an m sequence, a gold sequence, and a PD sequence.

33. The method according to any one of claims 1 to 32, characterized in that The OFDM sequence superimposed on the first signal is predefined; or, The OFDM sequence superimposed on the first signal is configured by a network device.

34. An information transmission method, characterized in that: The method is performed by a network device, and includes: A first signal is sent, where the first signal is OOK modulated by superimposing an orthogonal frequency division multiplexing (OFDM) sequence, and the first signal is transmitted on at least one first time domain unit, where each first time domain unit is associated with an OFDM sequence.

35. The method according to claim 34, wherein The first time domain unit is a time domain unit corresponding to the OOK symbol.

36. The method according to claim 35, characterized in that The OOK symbol is modulated by bit 1; or, The OOK symbol is modulated by bit 0.

37. The method according to claim 35 or 36, characterized in that The same OFDM sequence is superimposed on the at least one first time domain unit to perform the OOK modulation.

38. The method according to any one of claims 35 to 37, characterized in that The OFDM sequence is associated with information carried by the OOK symbols.

39. The method according to claim 35, wherein Each of the first time domain units in the first time domain unit set is superimposed with the same OFDM sequence to perform the OOK modulation, and the first time domain unit set includes at least one first time domain unit.

40. The method according to claim 39, wherein The first time domain unit set includes time domain units corresponding to OFDM symbols.

41. The method according to claim 39 or 40, characterized in that The OFDM sequence is associated with first information transmitted within the first set of time domain units.

42. The method according to claim 41, wherein The first information is one of the following information transmitted in the first time domain unit set: Original information bit sequence; Bit sequence before encoding; Encoded bit sequence; In case of multi-level coding, the first level encodes the bit sequence before coding; In case of multi-level coding, the bit sequence after the first level coding; In multi-level encoding, the bit sequence before the last level encoding; In multi-level encoding, the bit sequence after the last level of encoding.

43. The method according to any one of claims 39 to 42, characterized in that The superimposed OFDM sequences of the first time domain units in different sets of the first time domain units are independent of each other.

44. The method according to any one of claims 39 to 43, characterized in that The number of the OFDM sequences is determined based on the number of the first time domain units included in the first time domain unit set; or, The number of the OFDM sequences is determined based on the number of bits transmitted in the first set of time domain units.

45. The method according to claim 44, wherein The number of bits transmitted in the first time domain unit set is the number of bits of one of the following information: Original information bit sequence; Bit sequence before encoding; Encoded bit sequence; In case of multi-level coding, the first level encodes the bit sequence before coding; In case of multi-level coding, the bit sequence after the first level coding; In multi-level encoding, the bit sequence before the last level encoding; In multi-level encoding, the bit sequence after the last level of encoding.

46. The method according to claim 44 or 45, characterized in that The OFDM sequence and the information transmitted on the first time domain unit set have a one-to-one mapping relationship.

47. The method according to claim 35, wherein Each of the first time domain units in the second time domain unit set is respectively superimposed with the same OFDM sequence for OOK modulation, and the second time domain unit set includes P first time domain units, or the second time domain unit set includes P first time domain unit sets, and the first time domain unit set includes at least one first time domain unit, and P is a positive integer.

48. The method according to claim 47, wherein The OFDM sequence is associated with second information transmitted within the second set of time domain units.

49. The method according to claim 48, characterized in that The second information is one of the following information transmitted in the second time domain unit set: Original information bit sequence; Bit sequence before encoding; Encoded bit sequence; In case of multi-level coding, the first level encodes the bit sequence before coding; In case of multi-level coding, the bit sequence after the first level coding; In multi-level encoding, the bit sequence before the last level encoding; In multi-level encoding, the bit sequence after the last level of encoding.

50. The method according to any one of claims 47 to 49, characterized in that The superimposed OFDM sequences of the first time domain units in different sets of the second time domain units are independent of each other.

51. The method according to any one of claims 47 to 50, characterized in that The value of P is predefined; or, The value of P is configured by the network device; or, The value of P is determined based on the number of bits of the first signal before encoding; or, The value of P is determined based on the number of bits of the first signal after encoding.

52. The method according to any one of claims 47 to 51, characterized in that The number of the OFDM sequences is determined based on the number of the first time domain units included in the second time domain unit set; or, The number of the OFDM sequences is determined based on the number of bits transmitted in the second set of time domain units.

53. The method according to claim 52, characterized in that The number of bits transmitted in the second time domain unit set is the number of bits of one of the following information: Original information bit sequence; Bit sequence before encoding; Encoded bit sequence; In case of multi-level coding, the first level encodes the bit sequence before coding; In case of multi-level coding, the bit sequence after the first level coding; In multi-level encoding, the bit sequence before the last level encoding; In multi-level encoding, the bit sequence after the last level of encoding.

54. The method according to claim 52 or 53, characterized in that The OFDM sequence and the information transmitted on the second time domain unit set have a one-to-one mapping relationship.

55. The method according to claim 35, wherein In the third time domain unit set, an OFDM sequence is superimposed to perform the OOK modulation, and the third time domain unit set includes at least one of the first time domain units, wherein each of the first time domain units is respectively associated with the OFDM subsequence of the superimposed OFDM sequence in the third time domain unit set.

56. The method according to claim 55, characterized in that The OFDM sequence is associated with third information transmitted within the third set of time domain units.

57. The method according to claim 56, characterized in that The third information is one of the following information transmitted in the third time domain unit set: Original information bit sequence; Bit sequence before encoding; Encoded bit sequence; In case of multi-level coding, the first level encodes the bit sequence before coding; In case of multi-level coding, the bit sequence after the first level coding; In multi-level encoding, the bit sequence before the last level encoding; In multi-level encoding, the bit sequence after the last level of encoding.

58. The method according to any one of claims 55 to 57, characterized in that Each of the first time domain units in the third time domain set is superimposed with a different OFDM subsequence.

59. The method according to any one of claims 55 to 58, characterized in that The superimposed OFDM sequences of different sets of the third time domain units are independent of each other.

60. The method according to any one of claims 55 to 59, characterized in that The number of the OFDM sequences is determined based on the number of the first time domain units included in the third time domain unit set; or, The number of the OFDM sequences is determined based on the number of bits transmitted in the third set of time domain units.

61. The method according to claim 60, characterized in that The number of bits transmitted in the third time domain unit set is the number of bits of one of the following information: Original information bit sequence; Bit sequence before encoding; Encoded bit sequence; In case of multi-level coding, the first level encodes the bit sequence before coding; In case of multi-level coding, the bit sequence after the first level coding; In multi-level encoding, the bit sequence before the last level encoding; In multi-level encoding, the bit sequence after the last level of encoding.

62. The method according to any one of claims 60 or 61, characterized in that The OFDM sequence and the information transmitted on the third time domain unit set have a one-to-one mapping relationship.

63. The method according to any one of claims 34 to 62, characterized in that The terminal device detects the first signal by using envelope detection; or The terminal device detects the first signal by using a sequence correlation detection method.

64. The method according to any one of claims 34 to 63, wherein: The OFDM sequence is generated by at least one of the following sequences: a ZC sequence, an m sequence, a gold sequence, and a PD sequence.

65. The method according to any one of claims 34 to 64, characterized in that The OFDM sequence superimposed on the first signal is predefined; or, The OFDM sequence superimposed on the first signal is configured by a network device.

66. An information transmission device, characterized in that The device comprises: The receiving module is used to receive a first signal, which is modulated by on-off keying (OOK) by superimposing an orthogonal frequency division multiplexing (OFDM) sequence. The first signal is transmitted on at least one first time domain unit, and each first time domain unit is associated with an OFDM sequence.

67. The device according to claim 66, characterized in that The first time domain unit is a time domain unit corresponding to the OOK symbol.

68. The device according to claim 67, characterized in that The OOK symbol is modulated by bit 1; or, The OOK symbol is modulated by bit 0.

69. The device according to claim 67 or 68, characterized in that The same OFDM sequence is superimposed on the at least one first time domain unit to perform the OOK modulation.

70. The device according to any one of claims 67 to 69, characterized in that The OFDM sequence is associated with information carried by the OOK symbols.

71. The device according to claim 67, characterized in that Each of the first time domain units in the first time domain unit set is superimposed with the same OFDM sequence to perform the OOK modulation, and the first time domain unit set includes at least one first time domain unit.

72. The device according to claim 71, characterized in that The first time domain unit set includes time domain units corresponding to OFDM symbols.

73. The device according to claim 71 or 72, characterized in that The OFDM sequence is associated with first information transmitted within the first set of time domain units.

74. The device according to claim 73, characterized in that The first information is one of the following information transmitted in the first time domain unit set: Original information bit sequence; Bit sequence before encoding; Encoded bit sequence; In case of multi-level coding, the first level encodes the bit sequence before coding; In case of multi-level coding, the bit sequence after the first level coding; In multi-level encoding, the bit sequence before the last level encoding; In multi-level encoding, the bit sequence after the last level of encoding.

75. The device according to any one of claims 71 to 74, characterized in that The superimposed OFDM sequences of the first time domain units in different sets of the first time domain units are independent of each other.

76. The device according to any one of claims 71 to 75, characterized in that The number of the OFDM sequences is determined based on the number of the first time domain units included in the first time domain unit set; or, The number of the OFDM sequences is determined based on the number of bits transmitted in the first set of time domain units.

77. The device according to claim 76, characterized in that The number of bits transmitted in the first time domain unit set is the number of bits of one of the following information: Original information bit sequence; Bit sequence before encoding; Encoded bit sequence; In case of multi-level coding, the first level encodes the bit sequence before coding; In case of multi-level coding, the bit sequence after the first level coding; In multi-level encoding, the bit sequence before the last level encoding; In multi-level encoding, the bit sequence after the last level of encoding.

78. The device according to claim 76 or 77, characterized in that The OFDM sequence and the information transmitted on the first time domain unit set have a one-to-one mapping relationship.

79. The device according to claim 67, characterized in that Each of the first time domain units in the second time domain unit set is respectively superimposed with the same OFDM sequence for OOK modulation, and the second time domain unit set includes P first time domain units, or the second time domain unit set includes P first time domain unit sets, and the first time domain unit set includes at least one first time domain unit, and P is a positive integer.

80. The device according to claim 79, characterized in that The OFDM sequence is associated with second information transmitted within the second set of time domain units.

81. The device according to claim 80, characterized in that The second information is one of the following information transmitted in the second time domain unit set: Original information bit sequence; Bit sequence before encoding; Encoded bit sequence; In case of multi-level coding, the first level encodes the bit sequence before coding; In case of multi-level coding, the bit sequence after the first level coding; In multi-level encoding, the bit sequence before the last level encoding; In multi-level encoding, the bit sequence after the last level of encoding.

82. The device according to any one of claims 79 to 81, characterized in that The superimposed OFDM sequences of the first time domain units in different sets of the second time domain units are independent of each other.

83. The device according to any one of claims 79 to 82, characterized in that The value of P is predefined; or, The value of P is configured by the network device; or, The value of P is determined based on the number of bits of the first signal before encoding; or, The value of P is determined based on the number of bits of the first signal after encoding.

84. The device according to any one of claims 79 to 83, characterized in that The number of the OFDM sequences is determined based on the number of the first time domain units included in the second time domain unit set; or, The number of the OFDM sequences is determined based on the number of bits transmitted in the second set of time domain units.

85. The device according to claim 84, characterized in that The number of bits transmitted in the second time domain unit set is the number of bits of one of the following information: Original information bit sequence; Bit sequence before encoding; Encoded bit sequence; In case of multi-level coding, the first level encodes the bit sequence before coding; In case of multi-level coding, the bit sequence after the first level coding; In multi-level encoding, the bit sequence before the last level encoding; In multi-level encoding, the bit sequence after the last level of encoding.

86. The device according to claim 84 or 85, characterized in that The OFDM sequence and the information transmitted on the second time domain unit set have a one-to-one mapping relationship.

87. The device according to claim 67, characterized in that In the third time domain unit set, an OFDM sequence is superimposed to perform the OOK modulation, and the third time domain unit set includes at least one of the first time domain units, wherein each of the first time domain units is respectively associated with the OFDM subsequence of the superimposed OFDM sequence in the third time domain unit set.

88. The device according to claim 87, characterized in that The OFDM sequence is associated with third information transmitted within the third set of time domain units.

89. The device according to claim 88, characterized in that The third information is one of the following information transmitted in the third time domain unit set: Original information bit sequence; Bit sequence before encoding; Encoded bit sequence; In case of multi-level coding, the first level encodes the bit sequence before coding; In case of multi-level coding, the bit sequence after the first level coding; In multi-level encoding, the bit sequence before the last level encoding; In multi-level encoding, the bit sequence after the last level of encoding.

90. The device according to any one of claims 87 to 89, characterized in that Each of the first time domain units in the third time domain set is superimposed with a different OFDM subsequence.

91. The device according to any one of claims 87 to 90, characterized in that The superimposed OFDM sequences of different sets of the third time domain units are independent of each other.

92. The device according to any one of claims 87 to 91, characterized in that The number of the OFDM sequences is determined based on the number of the first time domain units included in the third time domain unit set; or, The number of the OFDM sequences is determined based on the number of bits transmitted in the third set of time domain units.

93. The device according to claim 92, characterized in that The number of bits transmitted in the third time domain unit set is the number of bits of one of the following information: Original information bit sequence; Bit sequence before encoding; Encoded bit sequence; In case of multi-level coding, the first level encodes the bit sequence before coding; In case of multi-level coding, the bit sequence after the first level coding; In multi-level encoding, the bit sequence before the last level encoding; In multi-level encoding, the bit sequence after the last level of encoding.

94. The device according to any one of claims 92 or 93, characterized in that The OFDM sequence and the information transmitted on the third time domain unit set have a one-to-one mapping relationship.

95. The device according to any one of claims 66 to 94, characterized in that The terminal device detects the first signal by using envelope detection; or The terminal device detects the first signal by using a sequence correlation detection method.

96. The device according to claim 95, characterized in that In the case where the terminal device adopts the sequence correlation detection, the apparatus further includes: a processing module, configured to determine the OFDM sequence superimposed with the first signal; The processing module is further configured to determine the information transmitted in the time domain unit set based on a mapping relationship between the OFDM sequence and the information transmitted in the time domain unit set, wherein the time domain unit set is a first time domain unit set or a second time domain unit set. Unit set, or the time domain unit set is a third time domain unit set.

97. The device according to any one of claims 66 to 96, characterized in that The OFDM sequence is generated by at least one of the following sequences: a ZC sequence, an m sequence, a gold sequence, and a PD sequence.

98. The device according to any one of claims 66 to 97, characterized in that The OFDM sequence superimposed on the first signal is predefined; or, The OFDM sequence superimposed on the first signal is configured by a network device.

99. An information transmission device, characterized in that The device comprises: A sending module is used to send a first signal, which is modulated by on-off keying (OOK) by superimposing an orthogonal frequency division multiplexing (OFDM) sequence. The first signal is transmitted on at least one first time domain unit, and each first time domain unit is associated with an OFDM sequence.

100. The device according to claim 99, characterized in that The first time domain unit is a time domain unit corresponding to the OOK symbol.

101. The device according to claim 100, characterized in that The OOK symbol is modulated by bit 1; or, The OOK symbol is modulated by bit 0.

102. The device according to claim 100 or 101, characterized in that The same OFDM sequence is superimposed on the at least one first time domain unit to perform the OOK modulation.

103. The device according to any one of claims 100 to 102, characterized in that The OFDM sequence is associated with information carried by the OOK symbols.

104. The device according to claim 100, characterized in that Each of the first time domain units in the first time domain unit set is superimposed with the same OFDM sequence to perform the OOK modulation, and the first time domain unit set includes at least one first time domain unit.

105. The device according to claim 104, characterized in that The first time domain unit set includes time domain units corresponding to OFDM symbols.

106. The device according to claim 104 or 105, characterized in that The OFDM sequence is associated with first information transmitted within the first set of time domain units.

107. The device according to claim 106, characterized in that The first information is one of the following information transmitted in the first time domain unit set: Original information bit sequence; Bit sequence before encoding; Encoded bit sequence; In case of multi-level coding, the first level encodes the bit sequence before coding; In case of multi-level coding, the bit sequence after the first level coding; In multi-level encoding, the bit sequence before the last level encoding; In multi-level encoding, the bit sequence after the last level of encoding.

108. The device according to any one of claims 104 to 107, characterized in that The superimposed OFDM sequences of the first time domain units in different sets of the first time domain units are independent of each other.

109. The device according to any one of claims 104 to 108, characterized in that The number of the OFDM sequences is determined based on the number of the first time domain units included in the first time domain unit set; or, The number of the OFDM sequences is determined based on the number of bits transmitted in the first set of time domain units.

110. The device according to claim 109, characterized in that The number of bits transmitted in the first time domain unit set is the number of bits of one of the following information: Original information bit sequence; Bit sequence before encoding; Encoded bit sequence; In case of multi-level coding, the first level encodes the bit sequence before coding; In case of multi-level coding, the bit sequence after the first level coding; In multi-level encoding, the bit sequence before the last level encoding; In multi-level encoding, the bit sequence after the last level of encoding.

111. The device according to claim 109 or 110, characterized in that The OFDM sequence and the information transmitted on the first time domain unit set have a one-to-one mapping relationship.

112. The device according to claim 100, characterized in that Each of the first time domain units in the second time domain unit set is respectively superimposed with the same OFDM sequence for OOK modulation, and the second time domain unit set includes P first time domain units, or the second time domain unit set includes P first time domain unit sets, and the first time domain unit set includes at least one first time domain unit, and P is a positive integer.

113. The device according to claim 112, characterized in that The OFDM sequence is associated with second information transmitted within the second set of time domain units.

114. The device according to claim 113, characterized in that The second information is one of the following information transmitted in the second time domain unit set: Original information bit sequence; Bit sequence before encoding; Encoded bit sequence; In case of multi-level coding, the first level encodes the bit sequence before coding; In case of multi-level coding, the bit sequence after the first level coding; In multi-level encoding, the bit sequence before the last level encoding; In multi-level encoding, the bit sequence after the last level of encoding.

115. The device according to one of claims 112 to 114, characterized in that The superimposed OFDM sequences of the first time domain units in different sets of the second time domain units are independent of each other.

116. The device according to any one of claims 112 to 115, characterized in that The value of P is predefined; or, The value of P is configured by the network device; or, The value of P is determined based on the number of bits of the first signal before encoding; or, The value of P is determined based on the number of bits of the first signal after encoding.

117. The device according to any one of claims 112 to 116, characterized in that The number of the OFDM sequences is determined based on the number of the first time domain units included in the second time domain unit set; or, The number of the OFDM sequences is determined based on the number of bits transmitted in the second set of time domain units.

118. The device according to claim 117, characterized in that The number of bits transmitted in the second time domain unit set is the number of bits of one of the following information: Original information bit sequence; Bit sequence before encoding; Encoded bit sequence; In case of multi-level coding, the first level encodes the bit sequence before coding; In case of multi-level coding, the bit sequence after the first level coding; In multi-level encoding, the bit sequence before the last level encoding; In multi-level encoding, the bit sequence after the last level of encoding.

119. The device according to claim 117 or 118, characterized in that The OFDM sequence and the information transmitted on the second time domain unit set have a one-to-one mapping relationship.

120. The device according to claim 100, characterized in that In the third time domain unit set, an OFDM sequence is superimposed to perform the OOK modulation, and the third time domain unit set includes at least one of the first time domain units, wherein each of the first time domain units is respectively associated with the OFDM subsequence of the superimposed OFDM sequence in the third time domain unit set.

121. The device according to claim 120, characterized in that The OFDM sequence is associated with third information transmitted within the third set of time domain units.

122. The device according to claim 121, characterized in that The third information is one of the following information transmitted in the third time domain unit set: Original information bit sequence; Bit sequence before encoding; Encoded bit sequence; In case of multi-level coding, the first level encodes the bit sequence before coding; In case of multi-level coding, the bit sequence after the first level coding; In multi-level encoding, the bit sequence before the last level encoding; In multi-level encoding, the bit sequence after the last level of encoding.

123. The device according to any one of claims 120 to 122, characterized in that Each of the first time domain units in the third time domain set is superimposed with a different OFDM subsequence.

124. The device according to any one of claims 120 to 123, characterized in that The superimposed OFDM sequences of different sets of the third time domain units are independent of each other.

125. The device according to any one of claims 120 to 124, characterized in that The number of the OFDM sequences is determined based on the number of the first time domain units included in the third time domain unit set; or, The number of the OFDM sequences is determined based on the number of bits transmitted in the third set of time domain units.

126. The device according to claim 125, characterized in that The number of bits transmitted in the third time domain unit set is the number of bits of one of the following information: Original information bit sequence; Bit sequence before encoding; Encoded bit sequence; In case of multi-level coding, the first level encodes the bit sequence before coding; In case of multi-level coding, the bit sequence after the first level coding; In multi-level encoding, the bit sequence before the last level encoding; In multi-level encoding, the bit sequence after the last level of encoding.

127. The device according to any one of claims 125 or 126, characterized in that The OFDM sequence and the information transmitted on the third time domain unit set have a one-to-one mapping relationship.

128. The device according to any one of claims 99 to 127, characterized in that The terminal device detects the first signal by using envelope detection; or The terminal device detects the first signal by using a sequence correlation detection method.

129. The device according to any one of claims 99 to 128, characterized in that The OFDM sequence is generated by at least one of the following sequences: a ZC sequence, an m sequence, a gold sequence, and a PD sequence.

130. The device according to any one of claims 99 to 129, characterized in that The OFDM sequence superimposed on the first signal is predefined; or, The OFDM sequence superimposed on the first signal is configured by a network device.

131. A communication device, characterized in that The communication device includes a processor and a memory, wherein a computer program is stored in the memory, and the processor executes the computer program to implement the method according to any one of claims 1 to 33, or implements the method according to any one of claims 34 to 65.

132. A computer-readable storage medium, characterized in that The storage medium stores a computer program, which is used to be executed by a processor to implement the method according to any one of claims 1 to 33, or to implement the method according to any one of claims 34 to 65.

133. A chip, characterized in that: The chip includes a programmable logic circuit and / or program instructions, and when the chip is running, it is used to implement the method according to any one of claims 1 to 33, or to implement the method according to any one of claims 34 to 65.

134. A computer program product, characterized in that The computer program product includes computer instructions, which are stored in a computer-readable storage medium. A processor reads and executes the computer instructions from the computer-readable storage medium to implement the method according to any one of claims 1 to 33, or to implement the method according to any one of claims 34 to 65.

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