Information indication method and apparatus, communication device, and storage medium

Abstract

The present application relates to the technical field of communications, and discloses an information indication method and apparatus, a communication device, and a storage medium. The information indication method in embodiments of the present application comprises: a first device receives a first channel, the first channel indicating target information of a second channel or a third channel, the first channel comprising at least one of a synchronization channel and a broadcast channel, and the target information comprising at least one of frequency domain information, time domain information and modulation information; and the first device receives the second channel on the basis of the target information, the second channel being used for carrying system information of Internet of Things communication.

Description

Information indication method, device, communication equipment and storage medium

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims priority to the Chinese patent application filed with the China Patent Office on December 12, 2023, with application number 202311711690.7 and titled “An information indication method, device, communication equipment and storage medium”, the entire contents of which are incorporated by reference into this application. Technical Field

[0003] The present application belongs to the field of communication technology, and specifically relates to an information indication method, apparatus, communication equipment and storage medium. Background Art

[0004] The Ambient Internet of Things (AIoT) refers to the process of quickly and accurately collecting, transmitting, and applying environmental and related information through the integration of various possible technical approaches around a specific goal.

[0005] In the AIoT, read / write devices, such as readers, typically need to communicate with multiple ambient IoT devices, such as tags. These devices can establish connections with the read / write devices and communicate with them based on the control instructions from the read / write devices. However, the initial connection between the ambient IoT devices and the reader / writer devices remains unresolved. Summary of the Invention

[0006] The embodiments of the present application provide an information indication method, apparatus, communication device, and storage medium, which can solve the problem of how to establish an initial connection between an environmental Internet of Things device and a reader / writer device.

[0007] In a first aspect, an information indication method is provided, the method comprising:

[0008] A first device receives a first channel, where the first channel indicates target information of a second channel or a third channel, the first channel includes at least one of a synchronization channel and a broadcast channel, and the target information includes at least one of frequency domain information, time domain information, and modulation information;

[0009] The first device receives the second channel based on the target information, where the second channel is used to carry system information of Internet of Things communication.

[0010] In a second aspect, an information indication method is provided, the method comprising:

[0011] The second device sends a first channel, where the first channel indicates target information of the second channel or the third channel, the first channel includes at least one of a synchronization channel and a broadcast channel, and the target information includes at least one of frequency domain information, time domain information, and modulation information;

[0012] The second device sends the second channel based on the target information, where the second channel is used to carry system information of the Internet of Things communication.

[0013] In a third aspect, an information indication device is provided, applied to a first device, the device comprising:

[0014] a first receiving module, configured to receive a first channel, where the first channel indicates target information of a second channel or a third channel, the first channel including at least one of a synchronization channel and a broadcast channel, and the target information including at least one of frequency domain information, time domain information, and modulation information;

[0015] The second receiving module is used to receive the second channel based on the target information, where the second channel is used to carry system information of the Internet of Things communication.

[0016] In a fourth aspect, an information indication device is provided, applied to a second device, the device comprising:

[0017] a first sending module, configured to send a first channel, where the first channel indicates target information of a second channel or a third channel, the first channel including at least one of a synchronization channel and a broadcast channel, and the target information including at least one of frequency domain information, time domain information, and modulation information;

[0018] The second sending module is used to send the second channel based on the target information, where the second channel is used to carry system information of the Internet of Things communication.

[0019] In a fifth aspect, a communication device is provided, which terminal includes a processor and a memory, wherein the memory stores programs or instructions that can be run on the processor, and when the program or instructions are executed by the processor, the steps of the method described in the first aspect or the second aspect are implemented.

[0020] In a sixth aspect, a communication device is provided, including a processor and a communication interface;

[0021] Wherein, when the communication device is a first device, the communication interface is used to:

[0022] receiving a first channel, where the first channel indicates target information of a second channel or a third channel, the first channel includes at least one of a synchronization channel and a broadcast channel, and the target information includes at least one of frequency domain information, time domain information, and modulation information;

[0023] Based on the target information, the second channel is received, where the second channel is used to carry system information of Internet of Things communication.

[0024] When the communication device is a second device, the communication interface is used to:

[0025] Sending a first channel, where the first channel indicates target information of a second channel or a third channel, the first channel includes at least one of a synchronization channel and a broadcast channel, and the target information includes at least one of frequency domain information, time domain information, and modulation information;

[0026] Based on the target information, the second channel is sent, where the second channel is used to carry system information of the Internet of Things communication.

[0027] In the seventh aspect, a readable storage medium is provided, on which a program or instruction is stored. When the program or instruction is executed by a processor, the steps of the method described in the first aspect are implemented, or the steps of the method described in the second aspect are implemented.

[0028] In an eighth aspect, an information indication system is provided, comprising: a first device and a second device, wherein the first device can be used to execute the steps of the method described in the first aspect, and the second device can be used to execute the steps of the method described in the second aspect.

[0029] In the ninth aspect, a chip is provided, comprising a processor and a communication interface, wherein the communication interface is coupled to the processor, and the processor is used to run programs or instructions to implement the method described in the first aspect, or to implement the method described in the second aspect.

[0030] In the tenth aspect, a computer program / program product is provided, which is stored in a storage medium and is executed by at least one processor to implement the method as described in the first aspect, or to implement the method as described in the second aspect.

[0031] In an embodiment of the present application, a first device can receive a first channel, wherein the first channel indicates target information of a second channel or a third channel, the first channel includes at least one of a synchronization channel and a broadcast channel, and the target information includes at least one of frequency domain information, time domain information, and modulation information; thereby, based on the target information, a second channel is received, wherein the second channel is used to carry system information of Internet of Things communication.

[0032] It can be seen that in the embodiment of the present application, at least one of the synchronization channel and the broadcast channel can indicate the target information of the second channel, or the target information of the third channel, so that after the first device receives the first channel, it can receive the second channel carrying the system information of the Internet of Things communication based on the target information of the second channel; or, receive the third channel based on the target information of the third channel, and then receive the second channel carrying the system information of the Internet of Things communication based on the indication of the third channel. That is, in the embodiment of the present application, at least one of the synchronization channel and the broadcast channel can directly indicate the second channel carrying the system information of the Internet of Things communication, or can indirectly indicate the second channel carrying the system information of the Internet of Things communication, so that the first device can obtain the system information of the Internet of Things communication. Therefore, in the embodiment of the present application, the necessary system information required for the initial access of the Internet of Things device is provided, which solves the problem of how to make an initial connection between the environmental Internet of Things device and the reader / writer device. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] FIG1 is a block diagram of a wireless communication system to which embodiments of the present application may be applied;

[0034] FIG2 is a schematic diagram of a generation framework of a multi-carrier on-off keying (OOK) signal based on an orthogonal frequency division multiplexing (OFDM) architecture in an embodiment of the present application;

[0035] FIG3 is a schematic diagram of an offset quadrature phase shift keying (OQPSK) transmission and expansion sequence in an embodiment of the present application;

[0036] FIG4 is a schematic diagram of a differential binary phase shift keying (DBPSK) modulation and spread sequence in an embodiment of the present application;

[0037] FIG5 is a block diagram of a minimum shift keying (MSK) modulation in an embodiment of the present application;

[0038] FIG6 is a schematic diagram of a Gaussian Filtered Minimum Shift Keying (GMSK) signal modulation principle in an embodiment of the present application;

[0039] FIG7 is a flow chart of an information indication method according to an embodiment of the present application;

[0040] FIG8 is a schematic diagram of a time domain repetition pattern according to an embodiment of the present application;

[0041] FIG9 is a second schematic diagram of a time domain repetitive pattern in an embodiment of the present application;

[0042] FIG10 is a flowchart of another information indication method in an embodiment of the present application;

[0043] FIG11 is a structural block diagram of an information indication device according to an embodiment of the present application;

[0044] FIG12 is a structural block diagram of another information indication device in an embodiment of the present application;

[0045] FIG13 is a structural block diagram of a communication device in an embodiment of the present application;

[0046] FIG14 is a block diagram of a terminal in an embodiment of the present application;

[0047] FIG15 is a structural block diagram of a network-side device in an embodiment of the present application. Specific embodiments

[0048] The following will be combined with the accompanying drawings in the embodiments of this application to clearly describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field are within the scope of protection of this application.

[0049] The terms "first", "second", etc. in this application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the terms used in this way are interchangeable where appropriate, so that the embodiments of the present application can be implemented in an order other than those illustrated or described herein, and the objects distinguished by "first" and "second" are generally of the same type, and do not limit the number of objects, for example, the first object can be one or more. In addition, "or" in this application represents at least one of the connected objects. For example, "A or B" covers three options, namely, Option 1: including A but not including B; Option 2: including B but not including A; Option 3: including both A and B. The character " / " generally indicates that the objects associated before and after are in an "or" relationship.

[0050] The term "indication" in this application can be either a direct indication (or explicit indication) or an indirect indication (or implicit indication). A direct indication can be understood as the sender explicitly informing the receiver of specific information, the operation to be performed, or the requested result, etc. in the instruction sent; an indirect indication can be understood as the receiver determining the corresponding information based on the instruction sent by the sender, or making a judgment and determining the operation to be performed or the requested result, etc. based on the judgment result.

[0051] It is worth noting that the technology described in the embodiments of the present application is not limited to the Long Term Evolution (LTE) / LTE-Advanced (LTE-A) system, but can also be used in other wireless communication systems, such as Code Division Multiple Access (CDMA), Time Division Multiple Access (TDMA), Frequency Division Multiple Access (FDMA), Orthogonal Frequency Division Multiple Access (OFDMA), Single-carrier Frequency-Division Multiple Access (SC-FDMA) or other systems. The terms "system" and "network" in the embodiments of the present application are often used interchangeably, and the technology described can be used for the systems and radio technologies mentioned above, as well as for other systems and radio technologies. The following description describes a New Radio (NR) system for illustrative purposes, and NR terminology is used in most of the following description, but these technologies can also be applied to systems other than NR systems, such as 6th generation (6G) systems. th Generation, 6G) communication system.

[0052] FIG1 shows a block diagram of a wireless communication system applicable to embodiments of the present application. The wireless communication system includes a terminal 11 and a network-side device 12 .

[0053] In some embodiments, the terminal 11 may be an Ambient Internet of Things (A-IoT) device, also known as an Ambient Power (AMP) device, a zero-power device, a low-power IoT device, a response device, a tag, etc.

[0054] Among them, the terminal 11 can also be a mobile phone, tablet personal computer, laptop computer, notebook computer, personal digital assistant (PDA), handheld computer, netbook, ultra-mobile personal computer (UMPC), mobile Internet device (MID), augmented reality (AR), virtual reality (VR) equipment, robot, wearable device, flight vehicle, vehicle user equipment (VUE), shipborne equipment, pedestrian user equipment (PUE), smart home (home appliances with wireless communication function, such as refrigerator, TV, washing machine or furniture, etc.), game console, personal computer (PC), ATM or self-service machine and other terminal side devices. Wearable devices include: smart watches, smart bracelets, smart headphones, smart glasses, smart jewelry (smart bracelets, smart bracelets, smart rings, smart necklaces, smart anklets, smart anklets, etc.), smart wristbands, smart clothing, etc. Among them, the vehicle-mounted device can also be called a vehicle-mounted terminal, a vehicle-mounted controller, a vehicle-mounted module, a vehicle-mounted component, a vehicle-mounted chip or a vehicle-mounted unit, etc. It should be noted that the specific type of the terminal 11 is not limited in the embodiment of the present application. The network side device 12 may include an access network device or a core network device, wherein the access network device may also be called a radio access network (Radio Access Network, RAN) device, a radio access network function or a radio access network unit. The access network device may include a base station, a wireless local area network (WLAN) access point (AP) or a wireless fidelity (WiFi) node, etc.Among them, the base station can be referred to as Node B (NB), Evolved Node B (eNB), the next generation Node B (gNB), New Radio Node B (NR Node B), access point, Relay Base Station (RBS), Serving Base Station (SBS), Base Transceiver Station (BTS), radio base station, radio transceiver, Basic Service Set (BSS), Extended Service Set (ESS), Home Node B (HNB), Home evolved Node B (home evolved Node B), Transmission Reception Point (TRP) or other appropriate terms in the relevant field. As long as the same technical effect is achieved, the base station is not limited to specific technical vocabulary. It should be noted that in the embodiment of the present application, only the base station in the NR system is used as an example for introduction, and the specific type of the base station is not limited.

[0055] To facilitate understanding of the broadcast information processing method according to the embodiment of the present application, the following related technologies are now introduced:

[0056] 1. Classification and characteristics of Ambient IoT (A-IoT) devices:

[0057] Currently, ambient IoT devices can be characterized based on their energy storage capacity and their ability to generate radio frequency signals for transmission.

[0058] Among them, A-IoT devices have one of the following energy storage capabilities:

[0059] Storage capacity 1: No ability to store energy;

[0060] Storage capacity 2: Energy can be stored up to E1 or E2 joules, where it is possible for E1 = E2;

[0061] Storage capacity3: Energy can be stored up to E2 joules.

[0062] In addition, IoT devices can be divided into three types: device A, device B, and device C, depending on their energy storage capacity and ability to generate radio frequency signals for transmission.

[0063] Device A: No energy storage, no independent signal generation / amplification, i.e. backscatter transmission;

[0064] Device B: has energy storage but no independent signal generation, i.e. backscatter transmission, where the use of stored energy may include amplification of the reflected signal;

[0065] Device C: has energy storage and independent signal generation, i.e., active RF components for transmission.

[0066] 2. A-IoT data or service types include the following two types:

[0067] (1) Device-originated (DO) services;

[0068] (2) Device-terminated (DT) services.

[0069] Among them, device-initiated services include device-active triggered (DO traffic includes DO autonomous, DO-A) services and device-terminated triggered (DO device-terminated triggered, DO-DTT) services.

[0070] Among them, DO data indicates that the data flow originates from the A-IoT device; DT data indicates that the data flow is transmitted to the A-IoT device.

[0071] Data streams originating from A-IoT devices (i.e., DO data) can be further categorized into the following two types:

[0072] DO-A, where AIoT devices autonomously initiate data transmission, for example, by connecting to a large number of various sensors that collect and, when necessary, proactively report information about the environment, devices, and organisms;

[0073] DO-DTT, where a reader / writer device such as a base station triggers an AIoT device to initiate data transmission, such as asset identification, status reporting, and tracking. These are all downlink (DL) trigger reports, with the reader collecting data from the tag by triggering inventory procedures. Because the data is generated or initiated by the IoT device, this service should be considered a DO service initiated by the tag, triggered by a reader-side control command.

[0074] 3. A-IoT system deployment scenarios can be divided into the following three scenarios:

[0075] Scenario 1: A-IoT is deployed within the NR system bandwidth, also known as in-band deployment. In this scenario, in one implementation, the same base station serves both the A-IoT device and the New Radio (NR) UE; in another implementation, different base stations serve the A-IoT device and the NR UE.

[0076] Scenario 2: A-IoT is deployed within the guard interval of the NR system, also known as guard band deployment. In this scenario, in one implementation, the same base station serves both the A-IoT device and the NR UE. In another implementation, different base stations serve the A-IoT device and the NR UE.

[0077] Scenario 3: A-IoT is deployed outside the NR system's guard interval (and obviously, outside the NR system bandwidth), also known as stand-alone deployment. In this scenario, the base station typically only serves A-IoT devices.

[0078] 4. Possible modulation methods for low-power signals

[0079] (1) On-Off Keying (OOK):

[0080] There are two ways to generate OOK modulation: one is a multi-carrier OOK signal (MC-OOK) based on an Orthogonal Frequency Division Multiplexing (OFDM) architecture; the other is a single-carrier OOK signal.

[0081] The design concept for generating multi-carrier OOK signals based on the OFDM architecture is to maintain the existing base station's transmitting architecture. Therefore, appropriate data is sent on the OFDM subcarriers to create a square wave signal in the time domain. The generation framework is shown in Figure 2. There are several types of methods for generating multi-carrier OOK signals based on the OFDM architecture:

[0082] The first type: OOK-1;

[0083] OOK-1 primarily uses one OFDM symbol to carry one bit of information. When transmitting bit 1, data is transmitted in the frequency domain corresponding to that symbol; when transmitting bit 0, no data is transmitted in the frequency domain corresponding to that symbol. To increase the transmission rate, the subcarrier spacing must be increased. Frequency domain data can use ZC (Zadoff-Chu) sequences, Quadrature Amplitude Modulation (QAM) signals, and other methods to ensure frequency domain signal flatness. Without inter-symbol power pooling, data is not transmitted in OFDM segments where bits are not transmitted, resulting in a certain amount of power loss.

[0084] The second type: OOK-2;

[0085] The OOK-2 waveform is similar to the frequency-shift keying (FSK) waveform. It primarily divides the frequency domain into multiple segments, with each segment carrying a single bit. When bit 1 is transmitted, data is transmitted on the corresponding segment; when bit 0 is transmitted, no data is transmitted on the corresponding segment. Frequency-domain data can use ZC sequences, QAM signals, or other methods to ensure frequency-domain signal flatness. Without intra-symbol power pooling, segments without bits are not transmitted, resulting in a certain amount of power loss.

[0086] The third type: OOK-3;

[0087] OOK-3 is divided into multiple segments in the frequency domain. Part of the subcarriers (tones) in each segment are modulated, and the receiving end uses a Goertzel receiver to extract and demodulate the corresponding tone.

[0088] The fourth type: OOK-4;

[0089] The OOK-4 waveform is one of the more flexible waveforms, capable of controlling the transmission rate by adjusting the number of bits transmitted within an OFDM symbol. OOK-4 can be generated in two ways: using discrete Fourier transform spread orthogonal frequency division multiplexing (DFT-S-FDM) or using the least squares (LS) method.

[0090] The idea behind DFT-S-OFDM is to first generate the desired waveform in the time domain, where the number of sampling points of the time domain waveform is equal to the number of resource elements (RE) in the wake-up signal (WUS) bandwidth, and then obtain frequency domain information through discrete Fourier transform (DFT).

[0091] The idea of ​​the least squares method is to infer the frequency domain waveform from the desired time domain waveform. It mainly uses the fast Fourier transform (FFT) matrix and the ideal time domain waveform to optimize the input frequency domain sequence X.

[0092] (2) Offset Quadrature Phase Shift Keying (OQPSK) or Differential Binary Phase Shift Keying (DBPSK):

[0093] Active tags can use OQPSK or DBPSK modulation to send data. These two modulation methods belong to constant envelope modulation technology. The following briefly introduces the two modulation methods.

[0094] The OQPSK modulation process can be described as follows: the serial input binary data stream is split into two separate transmission paths: the I path and the Q path. The "I" component is used for synchronization with the data waveform, and the "Q" component is used for quadrature transmission. Specifically, the even-numbered bits of the original input data are assigned to the I path, and the odd-numbered bits are assigned to the Q path. The in-phase and quadrature paths are staggered by half a symbol period. The I and Q paths are then used to modulate the carrier wave, using one of four discrete phase variations to represent each transmitted symbol (i.e., a bit pair).

[0095] BPSK and QPSK are similar in that both use phase to carry symbol information. For example, when the input symbol is a "1," the baseband modulator outputs a 1 (phase 0 degrees); when the input symbol is a "0," the baseband modulator outputs a -1 (phase 0 degrees). However, BPSK suffers from phase ambiguity, which occurs when the recovered digital information changes from a "0" to a "1" or vice versa, resulting in erroneous recovery. This phenomenon, caused by the phase inversion of the local reference carrier and resulting in erroneous recovery in the receiving system, is called "phase ambiguity." To address this issue, differential encoding was introduced, allowing decoding at the receiving end to be based on phase changes rather than the absolute phase value. This is the result of DBPSK.

[0096] In order to obtain better link performance and anti-interference performance, the original bit information is expanded by using at least one of the extended sequence and coding. A common processing method is shown in Figure 3 or Figure 4.

[0097] (3) Minimum Shift Keying (MSK) and Gaussian Filtered Minimum Shift Keying (GMSK) modulation:

[0098] MSK is a constant envelope continuous phase modulation, which is derived from binary frequency shift keying (FSK) modulation. In FSK, the carrier frequency changes randomly with the modulating signal, which is usually "0" or "1", and the phase after modulation is discontinuous. If the phase is continuous, it is called continuous phase frequency shift keying (CP-FSK). The so-called MSK modulation method is a special form of CP-FSK with a modulation index of 0.5. The MSK modulation principle is as follows:

[0099] make Among them, θ k The additional phase function is used to ensure the phase continuity between different symbols, ω c t is the carrier angular frequency, T s is the code element width; a k is the phase constant of the kth symbol. The MSK modulation block diagram is shown in FIG5 .

[0100] Because MSK's phase path is a curve, and its power spectrum sidelobes, as observed on a spectrum analyzer, deviate from the center frequency, resulting in slower attenuation, a Gaussian filter is added before MSK modulation to compensate for these shortcomings and improve attenuation performance. This modulator is therefore called GMSK.

[0101] As shown in Figure 6, GMSK modulation is to add a Gaussian low-pass filter before the MSK modulator, which makes the signal smoother and significantly improves the sidelobe attenuation performance of the power spectrum. After MSK modulation, the symbol data, namely the I and Q paths, are output. The final GMSK expression is as follows:

[0102] Where A represents the signal envelope, ω c represents the carrier angular frequency, Represents the information phase.

[0103] The information indication method provided by the embodiments of the present application is described in detail below through some embodiments and their application scenarios in combination with the accompanying drawings.

[0104] An embodiment of the present application provides an information indication method, as shown in FIG7 , which may include the following steps 701 to 702:

[0105] Step 701: A first device receives a first channel.

[0106] The first device may be a terminal device, such as an Internet of Things device (eg, a tag), and the Internet of Things device may include an ultra-low complexity and ultra-low power consumption terminal.

[0107] The first channel indicates target information of the second channel or the third channel, the first channel includes at least one of a synchronization channel (for example, a low power synchronization signal block (LP-SSB)) and a broadcast channel, and the target information includes at least one of frequency domain information, time domain information, and modulation information.

[0108] That is, the first channel indicates at least one of the frequency domain information, time domain information, and modulation information of the second channel, or the first channel indicates at least one of the frequency domain information, time domain information, and modulation information of the third channel.

[0109] In addition, the third channel is used to indicate the second channel.

[0110] Optionally, the second channel includes a downlink shared channel, such as a physical downlink shared channel (Physical Downlink Shared Channel, PDSCH).

[0111] Optionally, the third channel includes a downlink control channel, such as a physical downlink control channel (Physical Downlink Control Channel, PDCCH).

[0112] Exemplarily, at least one of the synchronization channel and the broadcast channel may indicate at least one of the frequency domain information, time domain information and modulation information of the PDCCH, or indicate at least one of the frequency domain information, time domain information and modulation information of the PDSCH.

[0113] In addition, system information can generally be divided into Master Information Block (MIB), System Information Block Type 1 (SIB1), and other System Information Block Types (other-SIB); among which, MIB can be carried by Low Power Synchronization Signal Block (LP-SSB), and SIB1 can be carried by a downlink shared channel (e.g., PDSCH). That is, the system information carried by the above-mentioned second channel can include SIB1.

[0114] Step 702: The first device receives the second channel based on the target information.

[0115] The second channel is used to carry system information of Internet of Things communication; the system information may include SIB1.

[0116] In an embodiment of the present application, the first channel received by the first device indicates at least one of the frequency domain information, time domain information, and modulation information of the second channel, or the first channel indicates at least one of the frequency domain information, time domain information, and modulation information of the third channel; therefore, the first device can receive the second channel based on at least one of the frequency domain information, time domain information, and modulation information of the second channel; or receive the third channel based on at least one of the frequency domain information, time domain information, and modulation information of the third channel, thereby receiving the second channel based on the indication of the third channel. The second channel carries system information of the Internet of Things communication, so after the first device receives the second channel, it can obtain the system information of the Internet of Things communication, so that the first device can perform initial access or perform other actions.

[0117] As can be seen from the above steps 701 to 702, in an embodiment of the present application, at least one of the synchronization channel and the broadcast channel can indicate the target information of the second channel, or the target information of the third channel, so that after the first device receives the first channel, it can receive the second channel carrying the system information of the Internet of Things communication based on the target information of the second channel; or, receive the third channel based on the target information of the third channel, and then receive the second channel carrying the system information of the Internet of Things communication based on the indication of the third channel. That is, in an embodiment of the present application, at least one of the synchronization channel and the broadcast channel can directly indicate the second channel carrying the system information of the Internet of Things communication, or can indirectly indicate the second channel carrying the system information of the Internet of Things communication, so that the first device can obtain the system information of the Internet of Things communication. Therefore, in an embodiment of the present application, the necessary system information required for the initial access of the Internet of Things device is provided, which solves the problem of how to make an initial connection between the environmental Internet of Things device and the reader / writer device.

[0118] Optionally, the first device receives the second channel based on the target information, including one of the following items A-1 to A-3:

[0119] Item A-1: ​​In a case where the first channel indicates the target information of the third channel, the first device receives the third channel through the target information of the third channel, and receives the second channel through the target information of the second channel indicated by the third channel;

[0120] It can be seen from item A-1 that the first channel can indirectly indicate the second channel, that is, the first channel can indicate the target information of the third channel, and the third channel can indicate the target information of the second channel; that is: the first channel indicates at least one of the frequency domain information, time domain information, and modulation information of the third channel, and the third channel indicates at least one of the frequency domain information, time domain information, and modulation information of the second channel; for example, when the first channel is a synchronization or broadcast channel, the second channel is PDSCH, and the third channel is PDSCH, the PDCCH can be indicated by the synchronization or broadcast channel, and the PDCCH (for example, the downlink control information (DCI)) of the PDCCH can indicate the PDSCH.

[0121] In this case, after the first device receives the first channel, it can receive the third channel based on at least one of the frequency domain information, time domain information, and modulation information of the third channel indicated by the first channel. After receiving the third channel, it can receive the second channel based on at least one of the frequency domain information, time domain information, and modulation information of the second channel indicated by the third channel, thereby obtaining system information of the Internet of Things communication from the received second channel, so as to facilitate the first device to perform initial access or perform other actions.

[0122] Item A-2: When the first channel indicates first information, the first device receives the second channel using the first information and second information indicated by header information of the second channel, the first information including part of the target information of the second channel, and the second information including information of the target information of the second channel other than the first information;

[0123] It can be seen from item A-2 that the first channel can be jointly indicated by the header information of the second channel with the header information of the second channel, that is, at least one of the frequency domain information, time domain information, and modulation information of the second channel can be divided into two parts, namely the first information and the second information, so that the first channel indicates the first information and the header information of the second channel indicates the second information; for example, when the first channel is a synchronization or broadcast channel and the second channel is PDSCH, the synchronization or broadcast channel and the header information of PDSCH can be jointly indicated by PDSCH.

[0124] In this case, the first device can receive the second channel based on the first information indicated by the first channel and the second information indicated by the header information of the second channel, thereby obtaining system information of the Internet of Things communication from the received second channel, so as to facilitate the first device to perform initial access or perform other actions.

[0125] It should be noted that for the PDSCH channel, in order to save resource overhead and perform more flexible scheduling, the first channel may not directly indicate all of its messages. For example, it may only indicate part of the modulation information of the PDSCH or PDSCH (header), such as waveform, coding method, etc., and then the PDSCH (header) further indicates the PDSCH (payload), and the subsequent DCI indication can omit this part of the overhead.

[0126] In addition, for PDCCH, some of its modulation parameters can be fixed, for example, Manchester coding is used for encoding, and the transmitted payload size is fixed, while the remaining modulation parameters can be determined by the indication of the first channel (for example, the code rate and other information are determined by the monitoring window length, waveform, and number of repeated transmissions).

[0127] Among them, the header information of the above-mentioned second channel is part of the second channel, that is, the header information of the second channel can indicate part of the target information of the second channel (such as the modulation and coding parameters, load size, time domain length and other information of the second channel), and the load part of the second channel is used to carry the system information of the Internet of Things communication (such as SIB1).

[0128] In addition, optionally, when the first channel indicates the first information and the header information of the second channel indicates the second information, the first channel is also used to indicate the header information of the second channel. That is, the header information of the second channel can be obtained from the indication of the first channel.

[0129] In addition, when the second channel is a PDSCH, the header information of the PDSCH may be a specific byte or a specific sequence in the PDSCH channel in the physical layer, and may also satisfy one of the following B-1 to B-4:

[0130] Item B-1: The information carried by the PDSCH header to indicate SIB1 comes from the subheader of the Medium Access Control (MAC) SDU. For example, a MAC subPDU is defined, which includes a MAC subheader and a MAC SDU. The MAC subheader indicates the control information of SIB1, and the MAC SDU indicates SIB1 (i.e., the SIB1 carried by the PDSCH comes from the MAC SDU).

[0131] Item B-2: The relevant information carried by the PDSCH header for indicating SIB1 comes from a MAC CE. For example, a MAC PDU is defined, including a first object and a second object. The first object includes a MAC subheader and a MAC CE, and the second object includes a MAC subheader and a MAC SDU. Then, the first object indicates SIB1 control information, and the second object indicates SIB1 (i.e., the SIB1 carried by the PDSCH comes from the first object).

[0132] Item B-3: The information carried by the PDSCH header for indicating SIB1 comes from a MAC subPDU in a MAC file containing only header information (MAC header only). For example, if a MAC PDU is defined, including a MAC file containing only subheader information (MAC subheader only) and a third object, and the third object includes a MAC subheader and a MAC SDU, then the MAC subheader only indicates SIB1 control information, and the third object indicates SIB1 (i.e., the SIB1 carried by the PDSCH comes from the third object).

[0133] Item B-4: The PDSCH header conforms to the design layer MAC CE format. For example, MAC subheader and MAC CE are defined to indicate SIB1 control information and SIB1 respectively. That is, the relevant information carried by the PDSCH header for indicating SIB1 comes from the MAC subheader, and the SIB1 carried by the PDSCH comes from the MAC SDU).

[0134] It should be noted that the data entity from or to a higher protocol layer is called a Service Data Unit (SDU), and the data entity from or to a lower protocol layer entity is called a Protocol Data Unit (PDU).

[0135] Item A-3: In a case where the first channel indicates the target information of the second channel, the first device receives the second channel through the target information of the second channel.

[0136] It can be seen from item A-3 that the first channel can directly indicate the second channel, that is, the first channel can directly indicate at least one of the frequency domain information, time domain information, and modulation information of the second channel; for example, when the first channel is a synchronization or broadcast channel and the second channel is PDSCH, the synchronization or broadcast channel can directly indicate PDSCH.

[0137] In this case, after the first device receives the first channel, it can receive the second channel based on at least one of the frequency domain information, time domain information, and modulation information of the second channel indicated by the first channel, thereby obtaining the system information of the Internet of Things communication from the received second channel, so as to facilitate the first device to perform initial access or perform other actions.

[0138] Optionally, when the target object indicates third information, the following item O-1 is satisfied:

[0139] Item O-1: the target object carries target indication information, where the target indication information is used to indicate the value of the third information in the target table;

[0140] The target table is a table corresponding to at least one of the device type, power level, service type, and deployment mode of the environmental Internet of Things to be connected to the first device in the target correspondence relationship, and the target correspondence includes a correspondence between the device type, power level, service type, deployment mode of the environmental Internet of Things, and a table including values ​​of the third information;

[0141] In a case where the target object includes the first channel, the third information includes the target information of the third channel, or includes the first information;

[0142] In a case where the target object includes the third channel, the third information includes the target information of the second channel;

[0143] In a case where the target object includes header information of the second channel, the third information includes the second information.

[0144] From the above items A-1 to A-3, we can see that:

[0145] The first channel may indicate the target information of the third channel, or the above-mentioned first information, or the target information of the second channel;

[0146] The third channel may indicate target information of the second channel;

[0147] The header information of the second channel may indicate the above-mentioned second information.

[0148] When a certain channel indicates certain information, it may be applicable to the case where the value of information in the corresponding table is indicated by the indication information.

[0149] Exemplarily, in the case where the first channel indicates the target information of the third channel, the first channel carries first indication information, and the first indication information is used to indicate the value of the target information of the third channel in the first table. The first table is a table corresponding to at least one of the device type, power level, service type, and deployment mode of the first device in the first correspondence relationship. The first correspondence relationship includes the correspondence between the device type, power level, service type, deployment mode and the table including the value of the target information of the third channel.

[0150] For example, the frequency domain information of the third channel is stored in a table, and different device types (capabilities), power levels, service types, and deployment modes of the environmental Internet of Things correspond to different tables; then the table corresponding to the device type, power level, service type, and deployment mode of the environmental Internet of Things to be accessed of the first device can be determined, and then the synchronization or broadcast channel can indicate which values ​​in the table the frequency domain information adopts, for example, the index of the corresponding value in the table can be indicated.

[0151] It should be noted that, in a table, a parameter in the frequency domain information may have at least one value.

[0152] Alternatively, exemplarily, in the case where the third channel indicates the target information of the second channel, the third channel carries second indication information, and the second indication information is used to indicate the value of the target information of the second channel in a second table, and the second table is a table corresponding to at least one of the device type, power level, service type, and deployment mode of the first device in a second correspondence, and the second correspondence includes the correspondence between the device type, power level, service type, deployment mode and the table including the value of the target information of the second channel.

[0153] Alternatively, exemplarily, when the first channel indicates the first information, the first channel carries third indication information, and the third indication information is used to indicate the value of the first information in the second table. The third table is a table corresponding to at least one of the device type, power level, service type, and deployment mode of the first device in a third correspondence relationship. The third correspondence includes the correspondence between the device type, power level, service type, deployment mode and the table including the value of the first information.

[0154] Alternatively, exemplarily, when the header information of the second channel indicates the second information, the header information of the second channel carries fourth indication information, and the fourth indication information is used to indicate the value of the second information in a fourth table. The fourth table is a table corresponding to at least one of the device type, power level, service type, and deployment mode of the first device in a fourth correspondence relationship, and the fourth correspondence includes the correspondence between the device type, power level, service type, deployment mode and the table including the value of the second information.

[0155] Or, exemplarily, in the case where the first channel indicates the target information of the second channel, the first channel carries fifth indication information, and the fifth indication information is used to indicate the value of the target information of the second channel in the fifth table. The fifth table is a table corresponding to at least one of the device type, power level, service type, and deployment mode of the first device in the fifth correspondence, and the fifth correspondence includes the correspondence between the device type, power level, service type, deployment mode and the table including the value of the target information of the second channel.

[0156] Optionally, the target indication information satisfies at least one of the following C-1 to C-3:

[0157] Item C-1: At least part of the target indication information is indicated by a specific byte or a specific sequence of the target object;

[0158] Item C-2: At least part of the information in the target indication information is determined based on the length of the CRC; that is, the correspondence between different values ​​of at least part of the information in the target indication information and the CRC length of the target object can be predetermined, and then the value of at least part of the information in the target indication information can be determined based on the actual CRC length of the target object;

[0159] For example, when the target object indicates the third information, and the target object includes the first channel, and the third information includes the target information of the third channel (that is, the first channel indicates the target information of the third channel), if the first channel includes indication information of the number of frequency bands occupied by the frequency domain of the third channel, then based on the correspondence between the number of frequency bands occupied by the frequency domain of the third channel and the CRC length of the first channel, for example, the number of frequency bands corresponding to the first length is x1, and the number of frequency bands corresponding to the second length is x2, then, if the actual CRC length of the first channel is the first length, then the first channel includes indication information that the number of frequency bands occupied by the frequency domain of the third channel is x1.

[0160] Item C-3: At least part of the information in the target indication information is determined according to the CRC scrambling method, that is, the correspondence between different values ​​of at least part of the information in the target indication information and the CRC scrambling method of the target object can be determined in advance. Then, according to the actual CRC scrambling method of the target object, the value of at least part of the information in the target indication information can be determined.

[0161] For example, when the target object indicates the third information, and the target object includes the first channel, and the third information includes the target information of the third channel (that is, the first channel indicates the target information of the third channel), if the first channel includes indication information of the number of frequency bands occupied by the frequency domain of the third channel, then based on the correspondence between the number of frequency bands occupied by the frequency domain of the third channel and the CRC scrambling method of the first channel, for example, the number of frequency bands corresponding to the first CRC scrambling method is x1, and the number of frequency bands corresponding to the second CRC scrambling method is x2, then, if the actual CRC scrambling method of the first channel is the first CRC scrambling method, then the first channel includes indication information that the number of frequency bands occupied by the frequency domain of the third channel is x1.

[0162] It can be seen from this that at least part of the target indication information can be indicated by a specific byte or a specific sequence of the target object, or can be carried by CRC.

[0163] It should be noted that the target indication information can be indicated solely by a specific byte or a specific sequence of the target object, or determined solely by the length of the CRC, or determined solely by the scrambling method of the CRC; the target indication information can also be divided into at least two parts, where different parts respectively meet one of the above C-1 to C-3.

[0164] For example, when the target object indicates the third information, and the target object includes the first channel, and the third information includes the target information of the third channel (that is, the first channel indicates the target information of the third channel), if the first channel includes indication information of the number of frequency bands occupied by the frequency domain of the third channel, and the indication information includes 16 bits, wherein the correspondence between the upper eight bits and the CRC scrambling method of the first channel and the correspondence between the lower eight bits and the CRC length of the first channel can be determined in advance, then the upper eight bits corresponding to the actual CRC scrambling method of the first channel and the lower eight bits corresponding to the actual CRC length of the first channel jointly indicate the number of frequency bands occupied by the frequency domain of the third channel.

[0165] Optionally, the frequency domain information of at least one of the second channel and the third channel includes at least one of the following items D-1 to D-4:

[0166] Item D-1: The frequency domain starting point position (e.g., the carrier, bandwidth part (BWP), or frequency band position of the second or third channel);

[0167] Item D-2: Number of frequency bands occupied by the frequency domain;

[0168] D-3: Signal bandwidth size;

[0169] Item D-4: Multiplexing mode with the first channel.

[0170] It should be noted that:

[0171] The frequency domain information of the third channel indicated by the first channel may include at least one item from D-1 to D-4 above;

[0172] The frequency domain information of the second channel indicated by the third channel may include at least one item from D-1 to D-4 above;

[0173] If the first information of the first channel indication includes frequency domain information, it may also include at least one item from D-1 to D-4 above;

[0174] If the second information indicated by the header information of the second channel includes frequency domain information, it may also include at least one of the above items D-1 to D-4;

[0175] The frequency domain information of the second channel indicated by the first channel may include at least one item from D-1 to D-4 above.

[0176] That is, the frequency domain information of the second channel (eg, PDSCH) mentioned above may include at least one item from D-1 to D-4, and the frequency domain information of the third channel (eg, PDCCH) may include at least one item from D-1 to D-4.

[0177] For item D-1 above, the frequency domain starting point position of the second channel or the third channel can be determined by performing a frequency domain offset on the frequency domain position of the first channel (e.g., LP-SSB). For example, the frequency domain starting point position of the second channel or the third channel is: the starting point offset of the LP-SSB is x*freq_space; wherein x is an integer indicated by the MIB, and freq_space represents a predefined interval; for example, the operating bandwidth of the AIOT device, or the frequency band interval (e.g., 1RB) allocated by the network for the AIOT system, or the subcarrier interval, grid interval, or carrier bandwidth of the AIOT system, or the BWP bandwidth of the AIOT system.

[0178] In addition, the frequency domain offset of the second channel relative to the LP-SSB is described as follows:

[0179] Case 1: LP-SSB and the second channel are within the same carrier, BWP, or narrow subband. In this case, the frequency domain offset, similar to a raster offset, helps correct frequency offset errors. The first device can determine the location of the second channel based on this frequency domain offset.

[0180] Case 2: The LP-SSB second channel is not within a carrier, BWP, or narrow band. In this case, it is necessary to indicate not only the frequency offset within the carrier / BWP / narrow band but also an offset representing the offset of the carrier / BWP / narrow band index. The first device determines the location of the second channel based on these two indications.

[0181] Among them, carriers / BWPs / segments with adjacent indexes may be adjacent or non-adjacent in the frequency domain. However, the specific location corresponding to each index does not need to be indicated by the MIB and can be predefined (for example, if the environmental Internet of Things is an in-band deployment mode, only physical resource blocks (PRBs) that meet certain conditions are allowed to be used as carriers for AIOT).

[0182] Similarly, the frequency domain offset of the third channel relative to LP-SSB also applies to the above cases 1 and 2.

[0183] In addition, whether LP-SSB and the second channel are in the same candidate carrier / BWP / narrow band, and whether LP-SSB and the third channel are in the same candidate carrier / BWP / narrow band may be related to the deployment mode of the environmental IoT. For example, for in-band deployment, LP-SSB and the second / third channel may be in the same BWP. For stand-alone deployment, further indication of this relationship may be required.

[0184] For item D-2 above, when the number of frequency bands occupied by the frequency domain of the second channel or the third channel (or the number of segments) is greater than or equal to 2, the receiver of the first device is required to have the ability to simultaneously receive multiple segments and perform demodulation to enhance coverage performance.

[0185] Among them, if the number of frequency bands occupied by the frequency domain of the second channel or the third channel (that is, the number of segments) is greater than or equal to 2, then the corresponding position can be agreed upon by the protocol implementation or indicated by the network side device; for example, when the number of segments is an even number, the position of the segment can be center-aligned, and the frequency domain starting point position in the above item D-1 belongs to the center point; it can be understood that the position of the segment may be start-point aligned in addition to center alignment. In this case, the frequency domain starting point position in the above item D-1 belongs to the starting point.

[0186] In addition, the position of each segment can be determined based on the offset relative to the starting point (i.e. the starting point of the frequency domain). For example, the first segment is offset by y BW from the starting point. device , the second segment is offset by z BW from the starting point device ;BW device It represents the working bandwidth of the first device, or other frequency domain intervals; or the position and index of each segment can also be pre-configured by the network or agreed upon by the protocol.

[0187] In addition, multi-band concurrent reception may be related to various factors such as device type (capabilities), power level, and deployment mode of the IoT environment, as described in Items E-1 and E-2 below:

[0188] Item E-1: From the perspective of device type, for example, device C mentioned above is an active tag with high power consumption. The receiver architecture can have multiple filters to simultaneously receive signals on multiple frequency bands, thereby improving coverage performance. For device A mentioned above, since its main application scenario is indoors and its power consumption is also low, the coverage performance requirements are lower and it does not need the ability to receive multiple frequency bands simultaneously.

[0189] Item E-2: From the perspective of environmental IoT deployment models, guard band deployment has limited bandwidth resources, and the PDCCH channel may not have much bandwidth resources, resulting in a relatively small number of frequency bands. Stand-alone deployment, on the other hand, has the most bandwidth resources, and a larger number of available frequency bands or segments.

[0190] Regarding item D-3 above, the bandwidth size of the second or third channel signal (i.e., the signal bandwidth size) primarily affects coverage performance and is also related to various factors such as device type (capabilities), power level, and deployment mode of the environmental IoT. Its impact is similar to that described in "E-1 to E-2 above."

[0191] Regarding item D-4 above, the multiplexing mode of the second or third channel relative to the first channel (e.g., LP-SSB) can be mainly divided into two modes: TDM and FDM. The multiplexing mode may be related to the deployment scenario. For example, for bandwidth-limited deployment and guard band deployment, TDM is preferred. For receivers that do not have the ability to receive multiple frequency bands simultaneously (e.g., device A or device B mentioned above), TDM is also preferred.

[0192] Optionally, the time domain information of at least one of the second channel and the third channel includes at least one of the following items F-1 to F-4:

[0193] Item F-1: Temporal location information;

[0194] F-2 item: the size of the monitoring window;

[0195] Item F-3: Monitoring period; (The monitoring period may be related to the AIOT service, and the monitoring periods of the second and third channels may also be different;)

[0196] Item F-4: Time domain interleaving mode.

[0197] It should be noted that:

[0198] The time domain information of the third channel indicated by the first channel may include at least one of the above F-1 to F-4;

[0199] The time domain information of the second channel indicated by the third channel may include at least one of the above F-1 to F-4;

[0200] If the first information of the first channel indication includes time domain information, it may also include at least one of the above items F-1 to F-4;

[0201] If the second information indicated by the header information of the second channel includes time domain information, it may also include at least one of the above items F-1 to F-4;

[0202] The time domain information of the second channel indicated by the first channel may include at least one of the above items F-1 to F-4.

[0203] That is, the time domain information of the second channel (eg, PDSCH) mentioned above may include at least one of the above F-1 to F-4, and the time domain information of the third channel (eg, PDCCH) may include at least one of the above F-1 to F-4.

[0204] For the above item F-1, optionally, the time domain location information of at least one of the second channel and the third channel includes at least one of the following:

[0205] The time domain position of the listening window of the channel to which the time domain position information belongs;

[0206] The starting point of the monitoring period of the channel to which the time domain position information belongs;

[0207] The offset of the listening window of the channel to which the time domain position information belongs relative to the starting point of the listening period.

[0208] It can be seen from this that when there is no listening period on the second channel, the time domain position information of the second channel may include the time domain position of the listening window of the second channel. That is, in this case, the time domain starting point of the second channel can be indicated by the time domain position of the listening window of the second channel.

[0209] Similarly, when there is no listening period on the third channel, the time domain position information of the third channel may include the time domain position of the listening window of the third channel. That is, in this case, the time domain starting point of the third channel may be indicated by the time domain position of the listening window of the third channel.

[0210] In addition, since the bits of the MIB in the AIOT system are limited, in order to reduce overhead, it can be assumed that the listening period M of a slot or an occasion within a time unit is fixed, or bound to other parameters or predefined by the protocol; then, after knowing the position of the listening period, it is also necessary to determine the offset of the listening window relative to the listening period through indication, so as to determine the time domain position of the second channel or the third channel.

[0211] Therefore, when the second channel has a listening period, the time domain position of the second channel can be determined by the starting point of the listening period of the second channel and the offset of the listening window relative to the starting point of the listening period. Similarly, when the third channel has a listening period, the time domain position of the third channel can be determined by the starting point of the listening period of the third channel and the offset of the listening window relative to the starting point of the listening period.

[0212] It should be noted that the offset of the listening window relative to the starting point of the listening period may refer to an offset in a time slot, an offset in a symbol, or an offset in other time units.

[0213] In addition, the correspondence between the SSB index and the offset set can be predetermined, so that the corresponding offset set can be determined according to the current SSB, thereby indicating which value in the set the offset of the listening window relative to the starting point of the listening period takes.

[0214] For the above item F-2, optionally, the size of the listening window of at least one of the second channel and the third channel is represented by one of the following:

[0215] The time domain length occupied by the channel to which the monitoring window belongs;

[0216] The time domain length occupied by a transport block of the system information;

[0217] The time domain length occupied by the header information of the second channel.

[0218] It can be seen that the size of the listening window of the second channel can be: the time domain length of the second channel (that is, the time length occupied by the second channel in the time domain), or the length occupied by one TB of SIB1, or the time domain length occupied by the header information of the second channel; the size of the listening window of the third channel can be: the time domain length of the third channel (that is, the time length occupied by the third channel in the time domain)

[0219] Regarding the above item F-4: the time domain interleaving mode refers to the interleaving and non-interleaving modes, such as the interleaving width, depth and other related parameters.

[0220] Optionally, the modulation information of at least one of the second channel and the third channel includes at least one of the following items G-1 to G-6:

[0221] G-1: payload size;

[0222] G-2 item: modulation parameters;

[0223] G-3: waveform parameters;

[0224] G-4: number of time domain repetitions;

[0225] Item G-5: Time domain repetitive pattern;

[0226] Item G-6: Channel structure information.

[0227] It should be noted that:

[0228] The modulation information of the third channel indicated by the first channel may include at least one of G-1 to G-6 above;

[0229] The modulation information of the second channel indicated by the third channel may include at least one of the above G-1 to G-6;

[0230] If the first information of the first channel indication includes modulation information, it may also include at least one of G-1 to G-6 above;

[0231] If the second information indicated by the header information of the second channel includes modulation information, it may also include at least one of the above items G-1 to G-6;

[0232] The modulation information of the second channel indicated by the first channel may include at least one of the above G-1 to G-6.

[0233] That is, the modulation information of the second channel (eg, PDSCH) mentioned above may include at least one of G-1 to G-6, and the modulation information of the third channel (eg, PDCCH) may include at least one of G-1 to G-6.

[0234] For the above item G-2, optionally, the modulation parameter includes one of the following:

[0235] Linear coding parameters, such as the linear coding method and the corresponding code rate (e.g., Miller coding, FM0 coding, Manchester coding, spreading sequence and its corresponding code rate);

[0236] Channel coding parameters, such as the channel coding method and corresponding code rate (for example, convolutional codes, low-density parity check codes (LDPC), polar codes, Hamming codes, Reed-Muller codes, and other error correction codes and their code rates).

[0237] For the above item G-3, optionally, the waveform parameters include at least one of the following modulation modes:

[0238] Gaussian Filtered Minimum Shift Keying (GMSK);

[0239] On-Off Keying (OOK);

[0240] Amplitude Shift Keying (ASK);

[0241] Frequency-shift keying (FSK);

[0242] Differential binary phase shift keying (DBPSK);

[0243] Offset Quadrature Phase Shift Keying (OQPSK);

[0244] Phase Reverse Amplitude Shift Keying (PR-ASK);

[0245] Double Sideband Modulation Amplitude Shift Keying (DSB-ASK);

[0246] Single Side Band Amplitude Shift Keying (SSB-ASK);

[0247] OOK-1;

[0248] OOK-2;

[0249] OOK-4;

[0250] Among them, OOK-1, OOK-2, and OOK-4 represent different multi-carrier OOK signal generation methods based on the orthogonal frequency division multiplexing (OFDM) architecture.

[0251] For G-4 and G-5, similar to the "number of frequency bands occupied in the frequency domain" mentioned above, both enhance coverage through retransmission. The time domain repetition patterns can be categorized into the following two types:

[0252] The first method is to repeatedly send the complete signal, as shown in Figure 8;

[0253] The second method is to send each bit repeatedly, as shown in Figure 9.

[0254] In Figures 8 and 9, N SF Indicates the number of bits included in the complete signal; N REP Indicates the number of time domain repetitions.

[0255] In addition, it should be noted that if better coverage is required, the number of retransmissions (that is, the number of time domain repetitions) can be set to a larger value. When the power level is low, the number of retransmissions can also be increased to ensure coverage performance. For in-band TDM deployment, it is sometimes necessary to stagger it with non-AIOT services in the time domain. For independent deployment, the time domain is more flexible.

[0256] As can be seen from item G-6, in the first channel, the channel structure of the second channel or the third channel can also be indicated, such as whether there is a preamble, whether there is a code field, whether there is a header, the transmission mode, etc.

[0257] The preamble signal is used for timing synchronization, time offset correction, or channel estimation.

[0258] The code field is used to determine the payload of the control information or the modulation and coding scheme (MCS);

[0259] The header is a possible structure of PDSCH or PDCCH, used to indicate the relevant modulation and coding parameters and payload size of the subsequent payload;

[0260] The transmission pattern refers to the structure of the second or third channel. For example, the channel may be divided into 1 st and 2 nd Part Two, 1 st part is used to determine 2 nd The transmission payload and MCS of the part, such as the fixed information bit transmission, may only need 1 st part; if the transmission content is large and different parts are required to carry different information, 1 st part carries part of the content and indicates 2 nd part content; the transmission pattern can also be used to indicate which common structures will be used in repeated transmissions, such as preambles and terminators, which can be shared and only exist in the first and last transmissions.

[0261] In addition, for example, for guard band deployment, which occupies smaller frequency domain resources and has a smaller working bandwidth (or the receiving device has a lower power level and poorer receiving performance), a preamble is required for PDCCH to ensure synchronization performance.

[0262] Optionally, when the size of the load transmitted by the second channel or the third channel is fixed, at least part of the modulation information of the second channel or the third channel includes information included in one of the predetermined modulation information combinations.

[0263] As can be seen, if the number of bits (i.e., payload size) transmitted by the second channel (i.e., PDSCH) or the third channel (i.e., PDCCH) is fixed, then the modulation information of the second channel or the third channel may be a limited number of combinations. The modulation method, code rate, etc. used can be determined based on the transmission time domain length and other indication information.

[0264] Optionally, when the size of the payload transmitted by the second channel or the third channel is variable, the size of the payload transmitted by the second channel or the third channel is determined by one of the following methods:

[0265] Determining a payload size transmitted by the second channel or the third channel according to a time domain length of the transmission and a modulation and coding strategy index value;

[0266] Determining a load size transmitted by the second channel or the third channel from a variable load candidate set including at least one load value, wherein the variable load candidate set is determined based on resource information or load information transmitted by the Internet of Things;

[0267] The size of the payload transmitted by the second channel or the third channel is determined according to a specific preamble code before the start of the payload and a specific terminator at the end of the payload.

[0268] Therefore, if the number of bits (i.e., payload size) transmitted by the second channel (i.e., PDSCH) or the third channel (i.e., PDCCH) is variable, the corresponding transport block size (TBS) can be calculated based on the transmission time domain length, modulation and coding scheme (MCS) index value, and further demodulation can be performed.

[0269] Alternatively, the second device (e.g., a network-side device or a reader) may send resource information available for AIOT transmission, so that the first device (e.g., an AIOT device) may determine a unique load or a set of variable load candidates for AIOT transmission based on the indicated resource information for AIOT transmission;

[0270] Alternatively, the second device may transmit load information for the AIOT transmission, so that the first device may determine a unique load or a set of variable load candidates for the AIOT transmission based on the indicated load information;

[0271] Alternatively, by sending a specific preamble (which may include a delimiter) before the start of the payload and a specific ending-of-signaling after the end of the payload, the first device is helped to determine the start time and end time of the signal sent by the second device, thereby determining the payload size.

[0272] An embodiment of the present application provides an information indication method, as shown in FIG10 , which may include the following steps 1001 to 1002:

[0273] Step 1001: The second device sends a first channel.

[0274] The second device may be a network-side device, such as a reader or a base station.

[0275] The first channel indicates target information of the second channel or the third channel, the first channel includes at least one of a synchronization channel (e.g., LP-SSB) and a broadcast channel, and the target information includes at least one of frequency domain information, time domain information, and modulation information.

[0276] That is, the first channel indicates at least one of the frequency domain information, time domain information, and modulation information of the second channel, or the first channel indicates at least one of the frequency domain information, time domain information, and modulation information of the third channel.

[0277] In addition, the third channel is used to indicate the second channel.

[0278] Optionally, the second channel includes a downlink shared channel, such as a physical downlink shared channel (Physical Downlink Shared Channel, PDSCH).

[0279] Optionally, the third channel includes a downlink control channel, such as a physical downlink control channel (Physical Downlink Control Channel, PDCCH).

[0280] Exemplarily, at least one of the synchronization channel and the broadcast channel may indicate at least one of the frequency domain information, time domain information and modulation information of the PDCCH, or indicate at least one of the frequency domain information, time domain information and modulation information of the PDSCH.

[0281] In addition, system information can generally be divided into Master Information Block (MIB), System Information Block Type 1 (SIB1), and other System Information Block Types (other-SIB); among which, MIB can be carried by Low Power Synchronization Signal Block (LP-SSB), and SIB1 can be carried by a downlink shared channel (e.g., PDSCH). That is, the system information carried by the above-mentioned second channel can include SIB1.

[0282] Step 1002: The second device sends the second channel based on the target information.

[0283] The second channel is used to carry system information of Internet of Things communication; the system information may include SIB1.

[0284] In an embodiment of the present application, the first channel sent by the second device indicates at least one of the frequency domain information, time domain information, and modulation information of the second channel, or the first channel indicates at least one of the frequency domain information, time domain information, and modulation information of the third channel; therefore, the second device can send the second channel based on at least one of the frequency domain information, time domain information, and modulation information of the second channel, or send the third channel based on at least one of the frequency domain information, time domain information, and modulation information of the third channel, thereby indicating the second channel through the third channel. The second channel carries system information of the Internet of Things communication, so after the first device receives the second channel, it can obtain the system information of the Internet of Things communication, so that the first device can perform initial access or perform other actions.

[0285] As can be seen from steps 1001 to 1002 above, in this embodiment of the present application, at least one of the synchronization channel and the broadcast channel can directly indicate the second channel carrying the system information for IoT communications, or can indirectly indicate the second channel carrying the system information for IoT communications, so that the first device can obtain the system information for IoT communications. Therefore, in this embodiment of the present application, the necessary system information required for the initial access of the IoT device is provided, solving the problem of how to initially connect the environmental IoT device and the reader / writer device.

[0286] Optionally, the second device sends the second channel based on the target information, including one of the following items L-1 to L-3:

[0287] Item L-1: in a case where the first channel indicates the target information of the third channel, the second device sends the third channel based on the target information of the third channel indicated by the first channel, and sends the second channel based on the target information of the second channel indicated by the third channel;

[0288] It can be seen from item L-1 that the first channel can indirectly indicate the second channel, that is, the first channel can indicate the target information of the third channel, and the third channel can indicate the target information of the second channel; that is: the first channel indicates at least one of the frequency domain information, time domain information, and modulation information of the third channel, and the third channel indicates at least one of the frequency domain information, time domain information, and modulation information of the second channel; for example, when the first channel is a synchronization or broadcast channel, the second channel is PDSCH, and the third channel is PDSCH, the PDCCH can be indicated by the synchronization or broadcast channel, and the PDCCH (for example, the downlink control information (DCI) of PDCCH) can indicate PDSCH.

[0289] In this case, after the first device receives the first channel, it can receive the third channel based on at least one of the frequency domain information, time domain information, and modulation information of the third channel indicated by the first channel. After receiving the third channel, it can receive the second channel based on at least one of the frequency domain information, time domain information, and modulation information of the second channel indicated by the third channel, thereby obtaining system information of the Internet of Things communication from the received second channel, so as to facilitate the first device to perform initial access or perform other actions.

[0290] Item L-2: When the first channel indicates first information, the second device sends the second channel based on the first information and second information indicated by header information of the second channel, where the first information includes part of the target information of the second channel, and the second information includes information in the target information of the second channel other than the first information.

[0291] It can be seen from item L-2 that the first channel can be jointly indicated by the header information of the second channel with the header information of the second channel, that is, at least one of the frequency domain information, time domain information, and modulation information of the second channel can be divided into two parts, namely the first information and the second information, so that the first channel indicates the first information and the header information of the second channel indicates the second information; for example, when the first channel is a synchronization or broadcast channel and the second channel is PDSCH, the synchronization or broadcast channel and the header information of PDSCH can be jointly indicated by PDSCH.

[0292] In this case, the first device can receive the second channel based on the first information indicated by the first channel and the second information indicated by the header information of the second channel, thereby obtaining system information of the Internet of Things communication from the received second channel, so as to facilitate the first device to perform initial access or perform other actions.

[0293] Among them, the header information of the above-mentioned second channel is part of the second channel, that is, the header information of the second channel can indicate part of the target information of the second channel (such as the modulation and coding parameters, load size, time domain length and other information of the second channel), and the load part of the second channel is used to carry the system information of the Internet of Things communication (such as SIB1).

[0294] In addition, optionally, when the first channel indicates the first information and the header information of the second channel indicates the second information, the first channel is also used to indicate the header information of the second channel. That is, the header information of the second channel can be obtained from the indication of the first channel.

[0295] Item L-3: In a case where the first channel indicates the target information of the second channel, the second device transmits the second channel based on the target information of the second channel indicated by the first channel.

[0296] It can be seen from item L-3 that the first channel can directly indicate the second channel, that is, the first channel can directly indicate at least one of the frequency domain information, time domain information, and modulation information of the second channel; for example, when the first channel is a synchronization or broadcast channel and the second channel is PDSCH, the synchronization or broadcast channel can directly indicate PDSCH.

[0297] In this case, after the first device receives the first channel, it can receive the second channel based on at least one of the frequency domain information, time domain information, and modulation information of the second channel indicated by the first channel, thereby obtaining the system information of the Internet of Things communication from the received second channel, so as to facilitate the first device to perform initial access or perform other actions.

[0298] Optionally, when the target object indicates third information, the following item O-1 is satisfied:

[0299] Item O-1: the target object carries target indication information, where the target indication information is used to indicate the value of the third information in the target table;

[0300] The target table is a table corresponding to at least one of the device type, power level, service type, and deployment mode of the environmental Internet of Things to be accessed by the first device receiving the second channel in the target correspondence relationship, wherein the target correspondence relationship includes a correspondence between the device type, power level, service type, deployment mode of the environmental Internet of Things, and a table including values ​​of the third information;

[0301] In a case where the target object includes the first channel, the third information includes the target information of the third channel, or includes the first information;

[0302] In a case where the target object includes the third channel, the third information includes the target information of the second channel;

[0303] In a case where the target object includes header information of the second channel, the third information includes the second information.

[0304] The relevant description of the above-mentioned item O-1 can be found in the above text and will not be repeated here.

[0305] Optionally, the target indication information satisfies at least one of the following C-1 to C-3:

[0306] Item C-1: At least part of the target indication information is indicated by a specific byte or a specific sequence of the target object;

[0307] Item C-2: At least part of the target indication information is determined based on the length of the CRC of the target object;

[0308] Item C-3: At least part of the target indication information is determined based on the scrambling method of the CRC of the target object.

[0309] For details on items C-1 to C-3, please refer to the previous text and will not be repeated here.

[0310] Optionally, the frequency domain information of at least one of the second channel and the third channel includes at least one of the following items D-1 to D-4:

[0311] Item D-1: frequency domain starting point position;

[0312] Item D-2: Number of frequency bands occupied by the frequency domain;

[0313] D-3: Signal bandwidth size;

[0314] Item D-4: Multiplexing mode with the first channel.

[0315] The relevant explanations for items D-1 to D-4 can be found in the previous text and will not be repeated here.

[0316] Optionally, the time domain information of at least one of the second channel and the third channel includes at least one of the following items F-1 to F-4:

[0317] Item F-1: Temporal location information;

[0318] F-2 item: the size of the monitoring window;

[0319] Item F-3: Monitoring period; (The monitoring period may be related to the AIOT service, and the monitoring periods of the second and third channels may also be different;)

[0320] Item F-4: Time domain interleaving mode.

[0321] The relevant explanations for items F-1 to F-4 can be found in the previous text and will not be repeated here.

[0322] Optionally, the time domain location information of at least one of the second channel and the third channel includes at least one of the following:

[0323] The time domain position of the listening window of the channel to which the time domain position information belongs;

[0324] The starting point of the monitoring period of the channel to which the time domain position information belongs;

[0325] The offset of the listening window of the channel to which the time domain position information belongs relative to the starting point of the listening period.

[0326] Among them, for the relevant explanations of the above three items included in the time domain location information, please refer to the above description and will not be repeated here.

[0327] Optionally, the size of the listening window of at least one of the second channel and the third channel is represented by one of the following:

[0328] The time domain length occupied by the channel to which the monitoring window belongs;

[0329] The time domain length occupied by a transport block of the system information;

[0330] The time domain length occupied by the header information of the second channel.

[0331] For the explanation of the above three items indicating the size of the listening window, please refer to the above description and will not be repeated here.

[0332] Optionally, the modulation information of at least one of the second channel and the third channel includes at least one of the following items G-1 to G-6:

[0333] G-1: payload size;

[0334] G-2 item: modulation parameters;

[0335] G-3: waveform parameters;

[0336] G-4: number of time domain repetitions;

[0337] Item G-5: Time domain repetitive pattern;

[0338] Item G-6: Channel structure information.

[0339] The relevant explanations for items G-1 to G-6 can be found in the previous text and will not be repeated here.

[0340] Optionally, the modulation parameter includes one of the following:

[0341] Parameters of linear encoding;

[0342] Channel coding parameters.

[0343] Optionally, the waveform parameters include at least one of the following modulation modes:

[0344] Gaussian minimum shift keying GMSK;

[0345] On-off keying (OOK);

[0346] Amplitude Shift Keying (ASK);

[0347] Frequency shift keying FSK;

[0348] Differential Binary Phase Shift Keying DBPSK;

[0349] Offset Quaternary Phase Shift Keying OQPSK;

[0350] Phase reversal amplitude keying PR-ASK;

[0351] Double-sideband amplitude-shift keying (DSB-ASK);

[0352] Single sideband amplitude keying SSB-ASK;

[0353] OOK-1;

[0354] OOK-2;

[0355] OOK-4;

[0356] Among them, OOK-1, OOK-2, and OOK-4 represent different multi-carrier OOK signal generation methods based on the orthogonal frequency division multiplexing (OFDM) architecture.

[0357] In summary, the existing related technologies do not consider the design of the system information SIB1 required for AIoT communication. However, in the embodiments of this application, a design method for AIOT devices to obtain SIB1 related information from synchronization or broadcast channels is mainly provided, specifically including the indication method and indication content of SIB1, which can be used for the initial access process of AIoT communication.

[0358] The information indication method provided in the embodiment of the present application can be executed by an information indication device. In the embodiment of the present application, the information indication device provided in the embodiment of the present application is described by taking the information indication device executing the information indication method as an example.

[0359] An embodiment of the present application provides an information indication device, which can be applied to a first device (e.g., an IoT device). As shown in FIG11 , the information indication device 110 may include the following modules:

[0360] A first receiving module 1101 is configured to receive a first channel, where the first channel indicates target information of a second channel or a third channel, the first channel including at least one of a synchronization channel and a broadcast channel, and the target information including at least one of frequency domain information, time domain information, and modulation information;

[0361] The second receiving module 1102 is configured to receive the second channel based on the target information, where the second channel is used to carry system information of IoT communication.

[0362] Optionally, the second receiving module 1102 is specifically configured to perform one of the following:

[0363] In a case where the first channel indicates the target information of the third channel, receiving the third channel according to the target information of the third channel, and receiving the second channel according to the target information of the second channel indicated by the third channel;

[0364] In a case where the first channel indicates first information, receiving the second channel through the first information and second information indicated by header information of the second channel, wherein the first information includes part of the target information of the second channel, and the second information includes information of the target information of the second channel other than the first information;

[0365] In a case where the first channel indicates the target information of the second channel, the second channel is received through the target information of the second channel.

[0366] Optionally, when the first channel indicates the first information and the header information of the second channel indicates the second information, the first channel is also used to indicate the header information of the second channel.

[0367] Optionally, in the case where the target object indicates the third information, the target object carries target indication information, and the target indication information is used to indicate the value of the third information in the target table;

[0368] The target table is a table corresponding to at least one of the device type, power level, service type, and deployment mode of the environmental Internet of Things to be connected to the first device in the target correspondence relationship, and the target correspondence includes a correspondence between the device type, power level, service type, deployment mode of the environmental Internet of Things, and a table including values ​​of the third information;

[0369] In a case where the target object includes the first channel, the third information includes the target information of the third channel, or includes the first information;

[0370] In a case where the target object includes the third channel, the third information includes the target information of the second channel;

[0371] In a case where the target object includes header information of the second channel, the third information includes the second information.

[0372] Optionally, the target indication information satisfies at least one of the following:

[0373] At least part of the target indication information is indicated by a specific byte or a specific sequence of the target object;

[0374] At least part of the target indication information is determined according to the length of the CRC of the target object;

[0375] At least part of the target indication information is determined according to a scrambling method of a CRC of the target object.

[0376] Optionally, the frequency domain information of at least one of the second channel and the third channel includes at least one of the following:

[0377] Frequency domain starting point position;

[0378] The number of frequency bands occupied by the frequency domain;

[0379] The bandwidth size of the signal;

[0380] with the multiplexing mode of the first channel.

[0381] Optionally, the time domain information of at least one of the second channel and the third channel includes at least one of the following:

[0382] Temporal location information;

[0383] The size of the monitoring window;

[0384] Monitoring period;

[0385] Time domain interleaving mode.

[0386] Optionally, the time domain location information of at least one of the second channel and the third channel includes at least one of the following:

[0387] The time domain position of the listening window of the channel to which the time domain position information belongs;

[0388] The starting point of the monitoring period of the channel to which the time domain position information belongs;

[0389] The offset of the listening window of the channel to which the time domain position information belongs relative to the starting point of the listening period.

[0390] Optionally, the size of the listening window of at least one of the second channel and the third channel is represented by one of the following:

[0391] The time domain length occupied by the channel to which the monitoring window belongs;

[0392] The time domain length occupied by a transport block of the system information;

[0393] The time domain length occupied by the header information of the second channel.

[0394] Optionally, the modulation information of at least one of the second channel and the third channel includes at least one of the following:

[0395] Load size;

[0396] Modulation parameters;

[0397] Waveform parameters;

[0398] Time domain repetition times;

[0399] Time domain repetitive patterns;

[0400] Channel structure information.

[0401] Optionally, the modulation parameter includes one of the following:

[0402] Parameters of linear encoding;

[0403] Channel coding parameters.

[0404] Optionally, the waveform parameters include at least one of the following modulation modes:

[0405] Gaussian minimum shift keying GMSK;

[0406] On-off keying (OOK);

[0407] Amplitude Shift Keying (ASK);

[0408] Frequency shift keying FSK;

[0409] Differential Binary Phase Shift Keying DBPSK;

[0410] Offset Quaternary Phase Shift Keying OQPSK;

[0411] Phase reversal amplitude keying PR-ASK;

[0412] Double-sideband amplitude-shift keying (DSB-ASK);

[0413] Single sideband amplitude keying SSB-ASK;

[0414] OOK-1;

[0415] OOK-2;

[0416] OOK-4;

[0417] Among them, OOK-1, OOK-2, and OOK-4 represent different multi-carrier OOK signal generation methods based on the orthogonal frequency division multiplexing (OFDM) architecture.

[0418] Optionally, the second channel includes a downlink shared channel.

[0419] Optionally, the third channel includes a downlink control channel.

[0420] The information indicating device in the embodiments of the application may be an electronic device, such as an electronic device with an operating system, or a component of an electronic device, such as an integrated circuit or chip. The electronic device may be a terminal. For example, the terminal may include, but is not limited to, the types of terminal 11 listed above, and is not specifically limited in the embodiments of the application.

[0421] The information indication device provided in the embodiment of the present application can implement the various processes implemented in the method embodiments of Figures 7 to 9 and achieve the same technical effects. To avoid repetition, they will not be described here.

[0422] An embodiment of the present application provides an information indication device, which can be applied to a second device (e.g., a network-side device). As shown in FIG12 , the information indication device 120 may include the following modules:

[0423] A first sending module 1201 is configured to send a first channel, where the first channel indicates target information of a second channel or a third channel, the first channel includes at least one of a synchronization channel and a broadcast channel, and the target information includes at least one of frequency domain information, time domain information, and modulation information;

[0424] The second sending module 1202 is configured to send the second channel based on the target information, where the second channel is used to carry system information of the Internet of Things communication.

[0425] Optionally, the second sending module 1202 is specifically configured to perform one of the following:

[0426] In a case where the first channel indicates the target information of the third channel, sending the third channel based on the target information of the third channel indicated by the first channel, and sending the second channel based on the target information of the second channel indicated by the third channel;

[0427] In a case where the first channel indicates first information, sending the second channel based on the first information and second information indicated by header information of the second channel, wherein the first information includes part of the target information of the second channel, and the second information includes information of the target information of the second channel other than the first information;

[0428] In a case where the first channel indicates the target information of the second channel, the second channel is transmitted based on the target information of the second channel indicated by the first channel.

[0429] Optionally, when the first channel indicates the first information and the header information of the second channel indicates the second information, the first channel is also used to indicate the header information of the second channel.

[0430] Optionally, in the case where the target object indicates the third information, the target object carries target indication information, and the target indication information is used to indicate the value of the third information in the target table;

[0431] The target table is a table corresponding to at least one of the device type, power level, service type, and deployment mode of the environmental Internet of Things to be accessed by the first device receiving the second channel in the target correspondence relationship, and the target correspondence relationship includes a correspondence between the device type, power level, service type, deployment mode of the environmental Internet of Things, and a table including values ​​of the third information;

[0432] In a case where the target object includes the first channel, the third information includes the target information of the third channel, or includes the first information;

[0433] In a case where the target object includes the third channel, the third information includes the target information of the second channel;

[0434] In a case where the target object includes header information of the second channel, the third information includes the second information.

[0435] Optionally, the target indication information satisfies at least one of the following:

[0436] At least part of the target indication information is indicated by a specific byte or a specific sequence of the target object;

[0437] At least part of the target indication information is determined according to the length of the CRC of the target object;

[0438] At least part of the target indication information is determined according to a scrambling method of a CRC of the target object.

[0439] Optionally, the frequency domain information of at least one of the second channel and the third channel includes at least one of the following:

[0440] Frequency domain starting point position;

[0441] The number of frequency bands occupied by the frequency domain;

[0442] The bandwidth size of the signal;

[0443] with the multiplexing mode of the first channel.

[0444] Optionally, the time domain information of at least one of the second channel and the third channel includes at least one of the following:

[0445] Temporal location information;

[0446] The size of the monitoring window;

[0447] Monitoring period;

[0448] Time domain interleaving mode.

[0449] Optionally, the time domain location information of at least one of the second channel and the third channel includes at least one of the following:

[0450] The time domain position of the listening window of the channel to which the time domain position information belongs;

[0451] The starting point of the monitoring period of the channel to which the time domain position information belongs;

[0452] The offset of the listening window of the channel to which the time domain position information belongs relative to the starting point of the listening period.

[0453] Optionally, the size of the listening window of at least one of the second channel and the third channel is represented by one of the following:

[0454] The time domain length occupied by the channel to which the monitoring window belongs;

[0455] The time domain length occupied by a transport block of the system information;

[0456] The time domain length occupied by the header information of the second channel.

[0457] Optionally, the modulation information of at least one of the second channel and the third channel includes at least one of the following:

[0458] Load size;

[0459] Modulation parameters;

[0460] Waveform parameters;

[0461] Time domain repetition times;

[0462] Time domain repetitive patterns;

[0463] Channel structure information.

[0464] Optionally, the modulation parameter includes one of the following:

[0465] Parameters of linear encoding;

[0466] Channel coding parameters.

[0467] Optionally, the waveform parameters include at least one of the following modulation modes:

[0468] Gaussian minimum shift keying GMSK;

[0469] On-off keying (OOK);

[0470] Amplitude Shift Keying (ASK);

[0471] Frequency shift keying FSK;

[0472] Differential Binary Phase Shift Keying DBPSK;

[0473] Offset Quaternary Phase Shift Keying OQPSK;

[0474] Phase reversal amplitude keying PR-ASK;

[0475] Double-sideband amplitude-shift keying (DSB-ASK);

[0476] Single sideband amplitude keying SSB-ASK;

[0477] OOK-1;

[0478] OOK-2;

[0479] OOK-4;

[0480] Among them, OOK-1, OOK-2, and OOK-4 represent different multi-carrier OOK signal generation methods based on the orthogonal frequency division multiplexing (OFDM) architecture.

[0481] Optionally, the second channel includes a downlink shared channel.

[0482] Optionally, the third channel includes a downlink control channel.

[0483] The information indicating device in the embodiments of the present application can be an electronic device, such as an electronic device with an operating system, or a component of an electronic device, such as an integrated circuit or chip. The electronic device can be a network-side device. For example, the network-side device can include, but is not limited to, the types of network-side devices 12 listed above, and is not specifically limited in the embodiments of the present application.

[0484] The information indication device provided in the embodiment of the present application can implement the various processes implemented in the method embodiment of Figure 10 and achieve the same technical effect. To avoid repetition, it will not be repeated here.

[0485] As shown in Figure 13, an embodiment of the present application further provides a communication device 1300, including a processor 1301 and a memory 1302. The memory 1302 stores a program or instruction that can be run on the processor 1301. For example, when the communication device 1300 is a first device, the program or instruction, when executed by the processor 1301, implements the various steps of the embodiment of the information indication method applied to the first device, and can achieve the same technical effect. When the communication device 1300 is a second device, the program or instruction, when executed by the processor 1301, implements the various steps of the embodiment of the information indication method applied to the second device, and can achieve the same technical effect. To avoid repetition, it will not be repeated here.

[0486] The present application also provides a terminal including a processor and a communication interface, wherein the communication interface is coupled to the processor, and the processor is configured to execute a program or instruction to implement the steps of the method embodiment shown in FIG7 . This terminal embodiment corresponds to the aforementioned terminal-side method embodiment, and each implementation process and implementation method of the aforementioned method embodiment is applicable to this terminal embodiment and can achieve the same technical effects. Specifically, FIG14 is a schematic diagram of the hardware structure of a terminal implementing an embodiment of the present application.

[0487] The terminal 1400 includes but is not limited to: a radio frequency unit 1401, a network module 1402, an audio output unit 1403, an input unit 1404, a sensor 1405, a display unit 1406, a user input unit 1407, an interface unit 1408, a memory 1409 and at least some of the components of the processor 1410.

[0488] Those skilled in the art will appreciate that the terminal 1400 may also include a power supply (such as a battery) to power various components. The power supply may be logically connected to the processor 1410 via a power management system, thereby enabling the power management system to manage charging, discharging, and power consumption. The terminal structure shown in FIG14 does not limit the terminal. The terminal may include more or fewer components than shown, or may combine certain components, or have different component arrangements, which will not be described in detail here.

[0489] It should be understood that in an embodiment of the present application, the input unit 1404 may include a graphics processing unit (GPU) 14041 and a microphone 14042, and the graphics processor 14041 processes the image data of a static picture or video obtained by an image capture device (such as a camera) in a video capture mode or an image capture mode. The display unit 1406 may include a display panel 14061, and the display panel 14061 may be configured in the form of a liquid crystal display, an organic light emitting diode, etc. The user input unit 1407 includes a touch panel 14071 and at least one of other input devices 14072. The touch panel 14071 is also called a touch screen. The touch panel 14071 may include two parts: a touch detection device and a touch controller. Other input devices 14072 may include, but are not limited to, a physical keyboard, function keys (such as volume control keys, switch keys, etc.), a trackball, a mouse, and an operating stick, which will not be repeated here.

[0490] In the embodiment of the present application, after receiving downlink data from a network-side device, the radio frequency unit 1401 may transmit the data to the processor 1410 for processing. Furthermore, the radio frequency unit 1401 may send uplink data to the network-side device. Typically, the radio frequency unit 1401 includes, but is not limited to, an antenna, an amplifier, a transceiver, a coupler, a low-noise amplifier, a duplexer, and the like.

[0491] The memory 1409 can be used to store software programs or instructions and various data. The memory 1409 may mainly include a first storage area for storing programs or instructions and a second storage area for storing data, wherein the first storage area may store an operating system, applications or instructions required for at least one function (such as a sound playback function, an image playback function, etc.). In addition, the memory 1409 may include a volatile memory or a non-volatile memory. Among them, the non-volatile memory may be a read-only memory (ROM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), an electrically erasable programmable read-only memory (EEPROM), or a flash memory. Volatile memory can be random access memory (RAM), static random access memory (SRAM), dynamic random access memory (DRAM), synchronous dynamic random access memory (SDRAM), double data rate synchronous dynamic random access memory (DDRSDRAM), enhanced synchronous dynamic random access memory (ESDRAM), synchronous link dynamic random access memory (SLDRAM), and direct RAM bus random access memory (DRRAM). The memory 1409 in the embodiment of the present application includes but is not limited to these and any other suitable types of memory.

[0492] Processor 1410 may include one or more processing units. Optionally, processor 1410 integrates an application processor and a modem processor. The application processor primarily handles operations related to the operating system, user interface, and application programs, while the modem processor primarily processes wireless communication signals, such as a baseband processor. It is understood that the modem processor may not be integrated into processor 1410.

[0493] The radio frequency unit 1401 is used for:

[0494] receiving a first channel, where the first channel indicates target information of a second channel or a third channel, the first channel includes at least one of a synchronization channel and a broadcast channel, and the target information includes at least one of frequency domain information, time domain information, and modulation information;

[0495] Based on the target information, the second channel is received, where the second channel is used to carry system information of Internet of Things communication.

[0496] Optionally, the RF unit 1401 receives the second channel based on the target information, including one of the following:

[0497] In a case where the first channel indicates the target information of the third channel, receiving the third channel according to the target information of the third channel, and receiving the second channel according to the target information of the second channel indicated by the third channel;

[0498] In a case where the first channel indicates first information, receiving the second channel through the first information and second information indicated by header information of the second channel, wherein the first information includes part of the target information of the second channel, and the second information includes information of the target information of the second channel other than the first information;

[0499] In a case where the first channel indicates the target information of the second channel, the second channel is received through the target information of the second channel.

[0500] Optionally, when the first channel indicates the first information and the header information of the second channel indicates the second information, the first channel is also used to indicate the header information of the second channel.

[0501] Optionally, in the case where the target object indicates the third information, the target object carries target indication information, and the target indication information is used to indicate the value of the third information in the target table;

[0502] The target table is a table corresponding to at least one of the device type, power level, service type, and deployment mode of the environmental Internet of Things to be connected to the first device in the target correspondence relationship, and the target correspondence includes a correspondence between the device type, power level, service type, deployment mode of the environmental Internet of Things, and a table including values ​​of the third information;

[0503] In a case where the target object includes the first channel, the third information includes the target information of the third channel, or includes the first information;

[0504] In a case where the target object includes the third channel, the third information includes the target information of the second channel;

[0505] In a case where the target object includes header information of the second channel, the third information includes the second information.

[0506] Optionally, the target indication information satisfies at least one of the following:

[0507] At least part of the target indication information is indicated by a specific byte or a specific sequence of the target object;

[0508] At least part of the target indication information is determined according to the length of the CRC of the target object;

[0509] At least part of the target indication information is determined according to a scrambling method of a CRC of the target object.

[0510] Optionally, the frequency domain information of at least one of the second channel and the third channel includes at least one of the following:

[0511] Frequency domain starting point position;

[0512] The number of frequency bands occupied by the frequency domain;

[0513] The bandwidth size of the signal;

[0514] with the multiplexing mode of the first channel.

[0515] Optionally, the time domain information of at least one of the second channel and the third channel includes at least one of the following:

[0516] Temporal location information;

[0517] The size of the monitoring window;

[0518] Monitoring period;

[0519] Time domain interleaving mode.

[0520] Optionally, the time domain location information of at least one of the second channel and the third channel includes at least one of the following:

[0521] The time domain position of the listening window of the channel to which the time domain position information belongs;

[0522] The starting point of the monitoring period of the channel to which the time domain position information belongs;

[0523] The offset of the listening window of the channel to which the time domain position information belongs relative to the starting point of the listening period.

[0524] Optionally, the size of the listening window of at least one of the second channel and the third channel is represented by one of the following:

[0525] The time domain length occupied by the channel to which the monitoring window belongs;

[0526] The time domain length occupied by a transport block of the system information;

[0527] The time domain length occupied by the header information of the second channel.

[0528] Optionally, the modulation information of at least one of the second channel and the third channel includes at least one of the following:

[0529] Load size;

[0530] Modulation parameters;

[0531] Waveform parameters;

[0532] Time domain repetition times;

[0533] Time domain repetitive patterns;

[0534] Channel structure information.

[0535] Optionally, the modulation parameter includes one of the following:

[0536] Parameters of linear encoding;

[0537] Channel coding parameters.

[0538] Optionally, the waveform parameters include at least one of the following modulation modes:

[0539] Gaussian minimum shift keying GMSK;

[0540] On-off keying (OOK);

[0541] Amplitude Shift Keying (ASK);

[0542] Frequency shift keying FSK;

[0543] Differential Binary Phase Shift Keying DBPSK;

[0544] Offset Quaternary Phase Shift Keying OQPSK;

[0545] Phase reversal amplitude keying PR-ASK;

[0546] Double-sideband amplitude-shift keying (DSB-ASK);

[0547] Single sideband amplitude keying SSB-ASK;

[0548] OOK-1;

[0549] OOK-2;

[0550] OOK-4;

[0551] Among them, OOK-1, OOK-2, and OOK-4 represent different multi-carrier OOK signal generation methods based on the orthogonal frequency division multiplexing (OFDM) architecture.

[0552] Optionally, the second channel includes a downlink shared channel.

[0553] Optionally, the third channel includes a downlink control channel.

[0554] It can be understood that the implementation process of each implementation method mentioned in this embodiment can refer to the relevant description of the above-mentioned information indication method embodiment applied to the first device, and achieve the same or corresponding technical effect. To avoid repetition, it will not be repeated here.

[0555] The present application also provides a network-side device, including a processor and a communication interface, wherein the communication interface is coupled to the processor, and the processor is configured to execute a program or instruction to implement the steps of the method embodiment shown in FIG10 . This network-side device embodiment corresponds to the aforementioned network-side device method embodiment, and each implementation process and implementation method of the aforementioned method embodiment are applicable to this network-side device embodiment and can achieve the same technical effects.

[0556] Specifically, embodiments of the present application also provide a network-side device. As shown in Figure 15 , the network-side device 1500 includes an antenna 151, a radio frequency device 152, a baseband device 153, a processor 154, and a memory 155. The antenna 151 is connected to the radio frequency device 152. In the uplink direction, the radio frequency device 152 receives information via the antenna 151 and sends the received information to the baseband device 153 for processing. In the downlink direction, the baseband device 153 processes the information to be transmitted and sends it to the radio frequency device 152. The radio frequency device 152 processes the received information and then sends it through the antenna 151.

[0557] The method executed by the network-side device in the above embodiment may be implemented in the baseband device 153 , which includes a baseband processor.

[0558] The baseband device 153 may include, for example, at least one baseband board, on which multiple chips are arranged, as shown in Figure 15, one of the chips is, for example, a baseband processor, which is connected to the memory 155 through a bus interface to call the program in the memory 155 and execute the network device operations shown in the above method embodiment.

[0559] The network side device may further include a network interface 156 , which is, for example, a Common Public Radio Interface (CPRI).

[0560] Specifically, the network side device 1500 of an embodiment of the present invention also includes: instructions or programs stored in the memory 155 and executable on the processor 154. The processor 154 calls the instructions or programs in the memory 155 to execute the methods executed by the modules shown in FIG12 and achieve the same technical effect. To avoid repetition, they will not be elaborated here.

[0561] An embodiment of the present application also provides a readable storage medium, on which a program or instruction is stored. When the program or instruction is executed by a processor, the various processes of the above-mentioned information indication method embodiment are implemented and the same technical effect can be achieved. To avoid repetition, it will not be repeated here.

[0562] The processor is the processor in the terminal described in the above embodiment. The readable storage medium includes a computer-readable storage medium, such as a computer read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk. In some examples, the readable storage medium may be a non-transitory readable storage medium.

[0563] An embodiment of the present application further provides a chip, which includes a processor and a communication interface, wherein the communication interface is coupled to the processor, and the processor is used to run programs or instructions to implement the various processes of the above-mentioned information indication method embodiment, and can achieve the same technical effect. To avoid repetition, it will not be repeated here.

[0564] It should be understood that the chip mentioned in the embodiments of the present application can also be called a system-level chip, a system chip, a chip system or a system-on-chip chip, etc.

[0565] An embodiment of the present application further provides a computer program / program product, which is stored in a storage medium. The computer program / program product is executed by at least one processor to implement the various processes of the above-mentioned information indication method embodiment and can achieve the same technical effect. To avoid repetition, it will not be repeated here.

[0566] An embodiment of the present application also provides an information indication system, including: a first device and a second device, wherein the first device can be used to execute the steps of the information indication method applied to the first device described above, and the second device can be used to execute the steps of the information indication method applied to the second device described above.

[0567] It should be noted that, in this article, the terms "comprise", "include" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "comprises a ..." does not exclude the presence of other identical elements in the process, method, article or device comprising the element. In addition, it should be pointed out that the scope of the methods and devices in the embodiments of the present application is not limited to performing functions in the order shown or discussed, and may also include performing functions in a substantially simultaneous manner or in the opposite order according to the functions involved. For example, the described method may be performed in an order different from that described, and various steps may also be added, omitted or combined. In addition, the features described with reference to certain examples may be combined in other examples.

[0568] Through the description of the above embodiments, those skilled in the art can clearly understand that the above-mentioned embodiment methods can be implemented by means of a computer software product plus a necessary general-purpose hardware platform, or of course, by hardware. The computer software product is stored in a storage medium (such as ROM, RAM, magnetic disk, optical disk, etc.) and includes a number of instructions for enabling a terminal or network-side device to execute the methods described in each embodiment of the present application.

[0569] The embodiments of the present application are described above in conjunction with the accompanying drawings, but the present application is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of this application, ordinary technicians in this field can also make many forms of implementation methods without departing from the purpose of this application and the scope of protection of the claims. These implementation methods are all within the protection of this application.

Claims

1. An information indication method, wherein: The method comprises: A first device receives a first channel, where the first channel indicates target information of a second channel or a third channel, where the first channel includes at least one of a synchronization channel and a broadcast channel, and the target information includes at least one of frequency domain information, time domain information, and modulation information; The first device receives the second channel based on the target information, where the second channel is used to carry system information of Internet of Things communication.

2. The method according to claim 1, wherein: The first device receives the second channel based on the target information, including one of the following: In a case where the first channel indicates the target information of the third channel, the first device receives the third channel through the target information of the third channel, and receives the second channel through the target information of the second channel indicated by the third channel; In a case where the first channel indicates first information, the first device receives the second channel through the first information and second information indicated by header information of the second channel, the first information includes part of the target information of the second channel, and the second information includes information in the target information of the second channel except the first information; In a case where the first channel indicates the target information of the second channel, the first device receives the second channel through the target information of the second channel.

3. The method according to claim 2, wherein: In a case where the first channel indicates the first information and the header information of the second channel indicates the second information, the first channel is also used to indicate the header information of the second channel.

4. The method according to claim 2 or 3, wherein: In the case where the target object indicates the third information, the target object carries target indication information, and the target indication information is used to indicate the value of the third information in the target table; The target table is a table corresponding to at least one of the device type, power level, service type, and deployment mode of the environmental Internet of Things to be connected to the first device in the target correspondence relationship, and the target correspondence relationship includes the correspondence between the device type, power level, service type, deployment mode of the environmental Internet of Things, and the table including the value of the third information; In a case where the target object includes the first channel, the third information includes the target information of the third channel, or includes the first information; In a case where the target object includes the third channel, the third information includes the target information of the second channel; In a case where the target object includes header information of the second channel, the third information includes the second information.

5. The method according to claim 4, wherein: The target indication information satisfies at least one of the following: At least part of the target indication information is indicated by specific bytes or specific sequences of the target object; At least part of the target indication information is determined according to the length of the CRC of the target object; At least part of the target indication information is determined according to a scrambling method of a CRC of the target object.

6. The method according to any one of claims 1 to 5, wherein: The frequency domain information of at least one of the second channel and the third channel includes at least one of the following: Frequency domain starting point position; The number of frequency bands occupied by the frequency domain; The bandwidth size of the signal; with the multiplexing mode of the first channel.

7. The method according to any one of claims 1 to 5, wherein: The time domain information of at least one of the second channel and the third channel includes at least one of the following: Temporal location information; The size of the listening window; Monitoring cycle; Time domain interleaving mode.

8. The method according to claim 7, wherein: The time domain location information of at least one of the second channel and the third channel includes at least one of the following: The time domain position of the listening window of the channel to which the time domain position information belongs; The starting point of the monitoring period of the channel to which the time domain position information belongs; The offset of the listening window of the channel to which the time domain position information belongs relative to the starting point of the listening period.

9. The method according to claim 7 or 8, wherein: The size of the listening window of at least one of the second channel and the third channel is represented by one of the following: The time domain length occupied by the channel to which the monitoring window belongs; The time domain length occupied by one transmission block of the system information; The time domain length occupied by the header information of the second channel.

10. The method according to any one of claims 1 to 9, wherein: The modulation information of at least one of the second channel and the third channel includes at least one of the following: Load size; Modulation parameters; Waveform parameters; Time domain repetition number; Time domain repetitive patterns; Channel structure information.

11. The method according to claim 10, wherein: The modulation parameter includes one of the following: Parameters of linear encoding; Channel coding parameters; The waveform parameters include at least one of the following modulation modes: Gaussian minimum shift keying GMSK; On / off keying OOK; Amplitude Shift Keying (ASK); Frequency shift keying FSK; Differential Binary Phase Shift Keying DBPSK; Offset Quaternary Phase Shift Keying OQPSK; Phase reversal amplitude keying PR-ASK; Double Sideband Amplitude Shift Keying DSB-ASK; Single sideband amplitude keying SSB-ASK; OOK-1; OOK-2; OOK-4; Among them, OOK-1, OOK-2, and OOK-4 represent different multi-carrier OOK signal generation methods based on the orthogonal frequency division multiplexing OFDM architecture.

12. The method according to any one of claims 1 to 11, wherein: The second channel comprises a downlink shared channel; The third channel includes a downlink control channel.

13. An information indication method, wherein: The method comprises: The second device sends a first channel, where the first channel indicates target information of a second channel or a third channel, where the first channel includes at least one of a synchronization channel and a broadcast channel, and the target information includes at least one of frequency domain information, time domain information, and modulation information; The second device sends the second channel based on the target information, where the second channel is used to carry system information of Internet of Things communication.

14. The method according to claim 13, wherein: The second device sends the second channel based on the target information, including one of the following: In a case where the first channel indicates the target information of the third channel, the second device sends the third channel based on the target information of the third channel indicated by the first channel, and sends the second channel based on the target information of the second channel indicated by the third channel; In a case where the first channel indicates first information, the second device sends the second channel based on the first information and second information indicated by header information of the second channel, the first information including part of the target information of the second channel, and the second information including information other than the first information in the target information of the second channel; In a case where the first channel indicates the target information of the second channel, the second device transmits the second channel based on the target information of the second channel indicated by the first channel.

15. The method according to claim 14, wherein: In a case where the first channel indicates the first information and the header information of the second channel indicates the second information, the first channel is also used to indicate the header information of the second channel.

16. The method according to claim 14 or 15, wherein: In the case where the target object indicates the third information, the target object carries target indication information, and the target indication information is used to indicate the value of the third information in the target table; The target table is a table corresponding to at least one of the device type, power level, service type, and deployment mode of the environmental Internet of Things to be accessed by the first device receiving the second channel in the target correspondence relationship, and the target correspondence relationship includes the correspondence between the device type, power level, service type, deployment mode of the environmental Internet of Things, and the table including the value of the third information; In a case where the target object includes the first channel, the third information includes the target information of the third channel, or includes the first information; In a case where the target object includes the third channel, the third information includes the target information of the second channel; In a case where the target object includes header information of the second channel, the third information includes the second information.

17. The method according to any one of claims 13 to 16, wherein: The frequency domain information of at least one of the second channel and the third channel includes at least one of the following: Frequency domain starting point position; The number of frequency bands occupied by the frequency domain; The bandwidth size of the signal; with the multiplexing mode of the first channel.

18. The method according to any one of claims 13 to 17, wherein: The time domain information of at least one of the second channel and the third channel includes at least one of the following: Temporal location information; The size of the listening window; Monitoring cycle; Time domain interleaving mode.

19. The method according to any one of claims 13 to 18, wherein: The modulation information of at least one of the second channel and the third channel includes at least one of the following: Load size; Modulation parameters; Waveform parameters; Time domain repetition number; Time domain repetitive patterns; Channel structure information.

20. An information indicating device, wherein: Applied to a first device, the apparatus comprises: A first receiving module is used to receive a first channel, where the first channel indicates target information of a second channel or a third channel, where the first channel includes at least one of a synchronization channel and a broadcast channel, and the target information includes at least one of frequency domain information, time domain information, and modulation information; The second receiving module is used to receive the second channel based on the target information, where the second channel is used to carry system information of Internet of Things communication.

21. The device according to claim 20, wherein: The second receiving module is specifically configured to perform one of the following: In a case where the first channel indicates the target information of the third channel, receiving the third channel through the target information of the third channel, and receiving the second channel through the target information of the second channel indicated by the third channel; In a case where the first channel indicates first information, receiving the second channel through the first information and second information indicated by header information of the second channel, the first information including part of the target information of the second channel, and the second information including information other than the first information in the target information of the second channel; In a case where the first channel indicates the target information of the second channel, the second channel is received through the target information of the second channel.

22. The device according to claim 21, wherein In a case where the first channel indicates the first information and the header information of the second channel indicates the second information, the first channel is also used to indicate the header information of the second channel.

23. The device according to claim 21 or 22, wherein: In the case where the target object indicates the third information, the target object carries target indication information, and the target indication information is used to indicate the value of the third information in the target table; The target table is a table corresponding to at least one of the device type, power level, service type, and deployment mode of the environmental Internet of Things to be connected to the first device in the target correspondence relationship, and the target correspondence relationship includes the correspondence between the device type, power level, service type, deployment mode of the environmental Internet of Things, and the table including the value of the third information; In a case where the target object includes the first channel, the third information includes the target information of the third channel, or includes the first information; In a case where the target object includes the third channel, the third information includes the target information of the second channel; In a case where the target object includes header information of the second channel, the third information includes the second information.

24. An information indicating device, wherein: Applied to a second device, the apparatus comprises: A first sending module, configured to send a first channel, where the first channel indicates target information of a second channel or a third channel, where the first channel includes at least one of a synchronization channel and a broadcast channel, and the target information includes at least one of frequency domain information, time domain information, and modulation information; The second sending module is used to send the second channel based on the target information, where the second channel is used to carry system information of Internet of Things communication.

25. The device according to claim 24, wherein: The second sending module is specifically configured to perform one of the following: In a case where the first channel indicates the target information of the third channel, sending the third channel based on the target information of the third channel indicated by the first channel, and sending the second channel based on the target information of the second channel indicated by the third channel; In a case where the first channel indicates first information, sending the second channel based on the first information and second information indicated by header information of the second channel, the first information including part of the target information of the second channel, and the second information including information other than the first information in the target information of the second channel; In a case where the first channel indicates the target information of the second channel, the second channel is transmitted based on the target information of the second channel indicated by the first channel.

26. The device according to claim 25, wherein In a case where the first channel indicates the first information and the header information of the second channel indicates the second information, the first channel is also used to indicate the header information of the second channel.

27. The device according to claim 25 or to 26, wherein: In the case where the target object indicates the third information, the target object carries target indication information, and the target indication information is used to indicate the value of the third information in the target table; The target table is a table corresponding to at least one of the device type, power level, service type, and deployment mode of the environmental Internet of Things to be accessed by the first device receiving the second channel in the target correspondence relationship, and the target correspondence relationship includes the correspondence between the device type, power level, service type, deployment mode of the environmental Internet of Things, and the table including the value of the third information; In a case where the target object includes the first channel, the third information includes the target information of the third channel, or includes the first information; In a case where the target object includes the third channel, the third information includes the target information of the second channel; In a case where the target object includes header information of the second channel, the third information includes the second information.

28. A communication device, wherein: It includes a processor and a memory, the memory stores a program or instruction that can be run on the processor, and when the program or instruction is executed by the processor, it implements the steps of the information indication method as described in any one of claims 1 to 12, or implements the steps of the information indication method as described in any one of claims 13 to 19.

29. A readable storage medium, wherein: The readable storage medium stores a program or instruction, and when the program or instruction is executed by the processor, it implements the steps of the information indication method as described in any one of claims 1 to 12, or implements the steps of the information indication method as described in any one of claims 13 to 19.

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