Information indication method, information determination method, apparatus, network element, and device

Abstract

The present disclosure provides an information indication method, an information determination method, an apparatus, a network element, and a device. The information indication method comprises: a first network element indicates first information to an A-IoT device by means of a pattern of a first signal, or indicates the first information to the A-IoT device by means of the pattern of the first signal and a first field of a PRDCH, the first information including at least one of the following: an R2D chip length, an OOK chip length, a D2R chip length, a PRDCH chip length, a PDRCH chip length, an R2D chip rate, an OOK chip rate, a D2R chip rate, a PRDCH chip rate, and a PDRCH chip rate.

Description

Information indication methods, information determination methods, devices, network elements and equipment

[0001] This disclosure claims priority to Chinese Patent No. 202411015396.7, filed with the Chinese Patent Office on July 26, 2024, entitled "Information Indication Method, Information Determination Method, Apparatus, Network Element and Equipment", the entire contents of which are incorporated herein by reference. Technical Field

[0002] This disclosure relates to the field of communication technology, and in particular to an information indication method, information determination method, apparatus, network element and equipment. Background Technology

[0003] To support the interconnection of hundreds of billions of things and address the high network construction costs and operational costs associated with large-scale deployments and subsequent maintenance such as battery replacements, a new type of Internet of Things (IoT) device has been designed in 5G systems: Ambient IoT (A-IoT). A-IoT devices have little or no energy storage capacity, and are characterized by low complexity, low cost, and low power consumption, which will help realize ubiquitous sensing and interconnection.

[0004] In A-IoT communication, base stations or terminals, acting as readers, send A-IoT downlink channels to A-IoT devices, instructing different types of A-IoT devices to perform backscattering of the incident signal or to autonomously send uplink response signals. A-IoT devices receive information such as the chip length used in the PRDCH sent by the reader.

[0005] Since there is no broadcast channel in an A-IoT system, this information cannot be broadcast to the device. Therefore, how the reader can inform the device of the downlink channel transmission parameters so that the device can receive, demodulate, and decode the downlink channel based on the relevant transmission parameters, becomes a crucial problem that urgently needs to be solved. Summary of the Invention

[0006] The purpose of this disclosure is to provide an information indication method, information determination method, apparatus, network element, and device to solve the problem in the related art where the lack of a broadcast channel in the A-IoT system prevents the transmission parameters of the downlink channel from being notified to the A-IoT device.

[0007] To address the aforementioned problems, this disclosure provides an information indication method, the method comprising:

[0008] The first network element indicates the first information to the environmental IoT A-IoT device through the pattern of the first signal; or, the first network element indicates the first information to the environmental IoT A-IoT device through the pattern of the first signal and the first field of the Physical Reader to Device Channel (PRDCH).

[0009] The first signal is any one of the following: Reader to Device (R2D) preamble, R2D time acquisition signal, R2D timing acquisition signal, start indicator component, and clock acquisition component;

[0010] The first information includes at least one of the following: R2D chip length, On-Off Keying (OOK) chip length, Device to Reader (D2R) chip length, PRDCH chip length, Physical Device to Reader Channel (PDRCH) chip length, R2D chip rate, OOK chip rate, D2R chip rate, PRDCH chip rate, and PDRCH chip rate; the chip rate M is used to indicate the number of chips contained in an Orthogonal Frequency Division Multiplexing (OFDM) symbol.

[0011] The first network element includes at least one of the following:

[0012] Base station, terminal, reader, intermediate node.

[0013] The start indication component includes at least one of the following: a start indication component in an R2D preamble, a start indication component in an R2D time acquisition signal, and a start indication component in an R2D timing acquisition signal;

[0014] And / or,

[0015] The clock acquisition component includes at least one of the following: a clock acquisition component in an R2D preamble, a clock acquisition component in an R2D time acquisition signal, and a clock acquisition component in an R2D timing acquisition signal.

[0016] The patterns of the first signals are different, and the values ​​of the first information indicated by the patterns of the first signals are different.

[0017] The difference in the patterns of the first signal is determined by the following method:

[0018] The lengths of the first signals are different;

[0019] The first signal uses a different sequence;

[0020] The combination of high and low voltages in the first signal is different.

[0021] The start indication component includes:

[0022] A low voltage lasting for N1 chips and a high voltage lasting for N2 chips; or,

[0023] A high voltage lasting for N1 chips and a low voltage lasting for N2 chips;

[0024] Where N1 and N2 are positive integers.

[0025] The start indication component includes:

[0026] A low voltage lasting one chip and a high voltage lasting three chips; or,

[0027] A high voltage lasting for one chip and a low voltage lasting for three chips.

[0028] The clock acquisition component uses a Manchester-coded sequence or a pulse interval-coded sequence.

[0029] The clock acquisition component is composed of different sequences;

[0030] And / or,

[0031] The different sequences of the clock acquisition component correspond to different values ​​of the first information.

[0032] The total length of the start indication component and the clock acquisition component is 1 OFDM symbol;

[0033] or,

[0034] The total length of the first signal is one OFDM symbol.

[0035] The length of the start indicator component is 1 / 4 OFDM symbol, and the length of the clock acquisition component is 3 / 4 OFDM symbol.

[0036] or,

[0037] The start indication component has a length of 38 sampling points, and the clock acquisition component has a length of 90 sampling points; wherein, the length of one OFDM symbol is 128 sampling points.

[0038] or,

[0039] The start indicator consists of a low voltage lasting for 8 sampling points and a high voltage lasting for 30 sampling points.

[0040] Wherein, the last bit of the symbol occupied by the clock acquisition component is a first fixed value;

[0041] or,

[0042] The last n bits of the symbol occupied by the clock acquisition component are a first fixed value; the duration corresponding to the n bits is greater than or equal to the duration corresponding to the cyclic prefix CP.

[0043] The first fixed value is either 0 or 1.

[0044] The cyclic prefix (CP) of the OFDM symbol occupied by the first signal satisfies the following characteristics:

[0045] CP stands for high voltage;

[0046] or,

[0047] CP is low voltage;

[0048] or,

[0049] There is no voltage transition edge during the duration of CP.

[0050] The first network element indicates first information to the A-IoT device via a first signal pattern, including:

[0051] The clock acquisition component indicates to the A-IoT device the chip length of the PRDCH, or the chip length of the PDRCH, or the chip rate of the PRDCH, or the chip rate of the PDRCH.

[0052] Alternatively, the first network element indicates first information to the A-IoT device through the pattern of the first signal and the first field of the PRDCH, including:

[0053] The sequence of the clock-acquired components and the first field of the PRDCH are used to indicate to the A-IoT device the chip length or chip rate of the other parts of the PRDCH besides the first field.

[0054] or,

[0055] The sequence of the clock-acquired components and the first field of the PDRCH are used to indicate the chip length or chip rate of the PDRCH to the A-IoT device.

[0056] Wherein, the first field of the PRDCH occupies K bits of the PRDCH, where K is a positive integer;

[0057] or,

[0058] The chip rate corresponding to the first field of the PRDCH is the same as the chip rate corresponding to the clock acquisition component.

[0059] or,

[0060] The chip length corresponding to the first field of the PRDCH is the same as the chip length corresponding to the clock acquisition component.

[0061] The total length of the start indication component and the clock acquisition component is related to the chip rate or chip length of the PRDCH.

[0062] The first network element indicates first information to the A-IoT device via a first signal pattern, including:

[0063] The length and / or pattern of the component obtained by the clock are used to indicate the chip rate or chip length of the PRDCH to the A-IoT device;

[0064] or,

[0065] The length and / or pattern of the component obtained by the clock are used to indicate the chip rate or chip length of the PDRCH to the A-IoT device.

[0066] The chip length of the clock acquisition component is the same as the chip length of the PRDCH;

[0067] or,

[0068] The chip rate of the clock acquisition component is the same as the chip rate of the PRDCH.

[0069] Where the chip rate of PRDCH is less than 16, the last bit of the symbol occupied by the clock acquisition unit is a first fixed value;

[0070] or,

[0071] When the chip rate of PRDCH is greater than or equal to 16, the last n bits of the symbol occupied by the clock acquisition unit are a first fixed value; the duration corresponding to the n bits is greater than or equal to the duration corresponding to the cyclic prefix CP;

[0072] The first fixed value is either 0 or 1.

[0073] Wherein, when the chip rate of PRDCH is equal to 1, the start indication component occupies 1 / 2 OFDM symbol or 1 OFDM symbol, and the clock acquisition component occupies 3 OFDM symbols, 4 OFDM symbols, 8 OFDM symbols or 16 OFDM symbols;

[0074] or,

[0075] When the chip rate of PRDCH is equal to 2, the start indication unit occupies 1 / 2 OFDM symbol or 1 OFDM symbol, and the clock acquisition unit occupies 2 OFDM symbols, 3 OFDM symbols, 4 OFDM symbols or 8 OFDM symbols;

[0076] or,

[0077] When the chip rate of PRDCH is equal to 4, the start indication unit occupies 1 / 2 OFDM symbol or 1 OFDM symbol, and the clock acquisition unit occupies 1.5 OFDM symbols, 2 OFDM symbols or 4 OFDM symbols;

[0078] or,

[0079] When the chip rate of PRDCH is greater than or equal to 8, the start indication component occupies 1 / 4 OFDM symbol and the clock acquisition component occupies 3 / 4 OFDM symbol;

[0080] or,

[0081] When the chip rate of PRDCH is equal to 8, the start indication unit occupies 1 / 2 OFDM symbol or 1 OFDM symbol, and the clock acquisition unit occupies 1 OFDM symbol or 2 OFDM symbols;

[0082] or,

[0083] When the chip rate of PRDCH is equal to 16, the start indication component occupies 1 / 2 OFDM symbol or 1 OFDM symbol, and the clock acquisition component occupies 1 / 2 OFDM symbol or 1 OFDM symbol.

[0084] This disclosure also provides an information determination method, the method comprising:

[0085] An A-IoT device in the environment determines first information based on the pattern of a first signal sent by a first network element; or, the A-IoT device determines first information based on the pattern of the first signal sent by the first network element and the first field of the physical reader-to-device channel PRDCH.

[0086] The first signal is any one of the following: reader-to-device R2D preamble, R2D time acquisition signal, R2D timing acquisition signal, start indicator component, clock acquisition component;

[0087] The first information includes at least one of the following: R2D chip length, on / off keying OOK chip length, device-to-reader D2R chip length, PRDCH chip length, physical device-to-reader channel PDRCH chip length, R2D chip rate, OOK chip rate, D2R chip rate, PRDCH chip rate, and PDRCH chip rate; the chip rate M is used to indicate the number of chips contained in an Orthogonal Frequency Division Multiplexing (OFDM) symbol.

[0088] This disclosure also provides a first network element, including a memory, a transceiver, and a processor:

[0089] A memory for storing computer programs; a transceiver for sending and receiving data under the control of the processor; and a processor for reading the computer programs from the memory and performing the following operations:

[0090] The first information is indicated to the environmental IoT A-IoT device by means of the pattern of the first signal; or, the first information is indicated to the environmental IoT A-IoT device by means of the pattern of the first signal and the first field of the device channel PRDCH from the physical reader.

[0091] The first signal is any one of the following: reader-to-device R2D preamble, R2D time acquisition signal, R2D timing acquisition signal, start indicator component, clock acquisition component;

[0092] The first information includes at least one of the following: R2D chip length, on / off keying OOK chip length, device-to-reader D2R chip length, PRDCH chip length, physical device-to-reader channel PDRCH chip length, R2D chip rate, OOK chip rate, D2R chip rate, PRDCH chip rate, and PDRCH chip rate; the chip rate M is used to indicate the number of chips contained in an Orthogonal Frequency Division Multiplexing (OFDM) symbol.

[0093] The first network element includes at least one of the following:

[0094] Base station, terminal, reader, intermediate node.

[0095] This disclosure also provides an environmental Internet of Things (A-IoT) device, including a memory, a transceiver, and a processor:

[0096] A memory for storing computer programs; a transceiver for sending and receiving data under the control of the processor; and a processor for reading the computer programs from the memory and performing the following operations:

[0097] The first information is determined based on the pattern of the first signal sent by the first network element, or the first information is determined based on the pattern of the first signal sent by the first network element and the first field of the physical reader to device channel PRDCH.

[0098] The first signal is any one of the following: reader-to-device R2D preamble, R2D time acquisition signal, R2D timing acquisition signal, start indicator component, clock acquisition component;

[0099] The first information includes at least one of the following: R2D chip length, on / off keying OOK chip length, device-to-reader D2R chip length, PRDCH chip length, physical device-to-reader channel PDRCH chip length, R2D chip rate, OOK chip rate, D2R chip rate, PRDCH chip rate, and PDRCH chip rate; the chip rate M is used to indicate the number of chips contained in an Orthogonal Frequency Division Multiplexing (OFDM) symbol.

[0100] This disclosure also provides an information indicating device, including:

[0101] The indicating unit is used to indicate first information to the environmental Internet of Things (A-IoT) device through the pattern of the first signal; or, to indicate the first information to the environmental Internet of Things (A-IoT) device through the pattern of the first signal and the first field of the device channel PRDCH from the physical reader.

[0102] The first signal is any one of the following: reader-to-device R2D preamble, R2D time acquisition signal, R2D timing acquisition signal, start indicator component, clock acquisition component;

[0103] The first information includes at least one of the following: R2D chip length, on / off keying OOK chip length, device-to-reader D2R chip length, PRDCH chip length, physical device-to-reader channel PDRCH chip length, R2D chip rate, OOK chip rate, D2R chip rate, PRDCH chip rate, and PDRCH chip rate; the chip rate M is used to indicate the number of chips contained in an Orthogonal Frequency Division Multiplexing (OFDM) symbol.

[0104] This disclosure also provides an information determining device, the device comprising:

[0105] The determining unit is configured to determine first information based on the pattern of the first signal transmitted by the first network element; or, to determine the first information based on the pattern of the first signal transmitted by the first network element and the first field of the physical reader-to-device channel (PRDCH).

[0106] The first signal is any one of the following: reader-to-device R2D preamble, R2D time acquisition signal, R2D timing acquisition signal, start indicator component, clock acquisition component;

[0107] The first information includes at least one of the following: R2D chip length, on / off keying OOK chip length, device-to-reader D2R chip length, PRDCH chip length, physical device-to-reader channel PDRCH chip length, R2D chip rate, OOK chip rate, D2R chip rate, PRDCH chip rate, and PDRCH chip rate; the chip rate M is used to indicate the number of chips contained in an Orthogonal Frequency Division Multiplexing (OFDM) symbol.

[0108] This disclosure also provides a processor-readable storage medium storing a program for causing the processor to perform the method described above.

[0109] The above-disclosed technical solution has at least the following beneficial effects:

[0110] In the information indication method, information determination method, apparatus, network element, and device of this disclosure, the first network element indicates first information to the A-IoT device through a pattern of a first signal or through a pattern of the first signal and a first field of the PRDCH. The first information includes at least one of the following: R2D chip length, on / off keying OOK chip length, device-to-reader D2R chip length, PRDCH chip length, physical device-to-reader channel PDRCH chip length, R2D chip rate, OOK chip rate, D2R chip rate, PRDCH chip rate, and PDRCH chip rate. Using this information indication method, the first network element can indicate transmission parameters such as chip length or chip rate to the A-IoT device, enabling the A-IoT device to receive and decode the PRDCH based on the obtained transmission parameters, thereby improving the flexibility of PRDCH transmission parameter configuration and enhancing the transmission spectrum efficiency of the A-IoT system. Attached Figure Description

[0111] Figure 1 shows a block diagram of a wireless communication system to which embodiments of the present disclosure may be applied;

[0112] Figure 2 is a schematic diagram illustrating the steps of the information indication method provided in an embodiment of this disclosure;

[0113] Figure 3 is a schematic diagram illustrating the steps of the information determination method provided in an embodiment of this disclosure;

[0114] Figure 4 shows a schematic diagram of the principle of Example 1 provided in the embodiments of this disclosure;

[0115] Figure 5 shows a schematic diagram of the principle of Example 2 provided in the embodiments of this disclosure;

[0116] Figure 6 shows a schematic diagram of the principle of Example 3 provided in the embodiments of this disclosure;

[0117] Figure 7 shows one of the schematic diagrams of Example 4 provided in the embodiments of this disclosure;

[0118] Figure 8 shows a second schematic diagram of Example 4 provided in the embodiments of this disclosure;

[0119] Figure 9 illustrates the third principle diagram of Example 4 provided in this disclosure;

[0120] Figure 10 shows the fourth schematic diagram of Example 4 provided in the embodiments of this disclosure;

[0121] Figure 11 shows the fifth schematic diagram of Example 4 provided in the embodiments of this disclosure;

[0122] Figure 12 shows one of the schematic diagrams of Example 5 provided in the embodiments of this disclosure;

[0123] Figure 13 shows a second schematic diagram of Example 5 provided in the embodiments of this disclosure;

[0124] Figure 14 illustrates the third principle diagram of Example 5 provided in this disclosure embodiment;

[0125] Figure 15 illustrates the fourth principle diagram of Example 5 provided in the embodiments of this disclosure;

[0126] Figure 16 illustrates the fifth principle diagram of Example 5 provided in the embodiments of this disclosure;

[0127] Figure 17 illustrates the sixth of the principle diagrams of Example 5 provided in this disclosure;

[0128] Figure 18 shows a schematic diagram of the structure of the first network element provided in an embodiment of this disclosure;

[0129] Figure 19 shows a schematic diagram of the structure of the A-IoT device provided in an embodiment of this disclosure;

[0130] Figure 20 shows a schematic diagram of the structure of the information indication device provided in an embodiment of this disclosure;

[0131] Figure 21 shows a schematic diagram of the information determination device provided in an embodiment of this disclosure. Detailed Implementation

[0132] To make the technical problems, solutions, and advantages of this disclosure clearer, the technical solutions in the embodiments of this disclosure will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this disclosure, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this disclosure without creative effort are within the scope of protection of this disclosure.

[0133] Figure 1 shows a block diagram of a wireless communication system applicable to an embodiment of this disclosure. The wireless communication system includes a terminal device 11 and a network-side device 12. The terminal device 11 can also be referred to as a terminal or user equipment (UE). It should be noted that the specific type of terminal 11 is not limited in this embodiment. The network-side device 12 can be a base station or a core network. It should be noted that this embodiment only uses a base station in an NR system as an example, but does not limit the specific type of base station.

[0134] In this disclosure, the term "and / or" describes the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent three cases: A alone, A and B simultaneously, and B alone. The character " / " generally indicates that the preceding and following related objects have an "or" relationship.

[0135] In this disclosure, the term "multiple" refers to two or more, and other quantifiers are similar.

[0136] The technical solutions provided in this disclosure can be applied to a variety of systems. For example, applicable systems may include Long Term Evolution (LTE) systems, LTE Frequency Division Duplex (FDD) systems, LTE Time Division Duplex (TDD) systems, Long Term Evolution Advanced (LTE-A) systems, Universal Mobile Telecommunications System (UMTS), Worldwide Interoperability for Microwave Access (WiMAX) systems, 5th Generation (5G) New Radio (NR) systems and their evolution communication systems, and 6th Generation (6G) systems. These systems may include terminal equipment and network equipment. The systems may also include a core network component, such as an Evolved Packet Core (EPC) or a 5G Core (5GC).

[0137] The terminal devices involved in the embodiments of this disclosure can be devices that provide voice and / or data connectivity to users, handheld devices with wireless connectivity, or other processing devices connected to a wireless modem. The names of the terminal devices may differ in different systems; for example, in a 5G system, a terminal device can be called User Equipment (UE). Wireless terminal devices can communicate with one or more core networks (CNs) via a Radio Access Network (RAN). Wireless terminal devices can be mobile terminal devices, such as mobile phones (or "cellular" phones) and computers with mobile terminal devices, for example, portable, pocket-sized, handheld, computer-embedded, or vehicle-mounted mobile devices that exchange voice and / or data with the RAN. Examples include Personal Communication Service (PCS) phones, cordless phones, Session Initiated Protocol (SIP) phones, Wireless Local Loop (WLL) stations, and Personal Digital Assistants (PDAs). Wireless terminal equipment can also be referred to as a system, subscriber unit, subscriber station, mobile station, mobile station, remote station, access point, remote terminal, access terminal, user terminal, user agent, or user device, but is not limited to these terms in the embodiments disclosed herein.

[0138] The network device disclosed in this embodiment may be a base station, which may include multiple cells providing services to terminals. Depending on the specific application, the base station may also be called an access point, or a device in the access network that communicates with the wireless terminal device through one or more sectors on the air interface, or other names. The network device may be used to exchange received air frames with Internet Protocol (IP) packets, acting as a router between the wireless terminal device and the rest of the access network, where the rest of the access network may include an Internet Protocol (IP) communication network. The network device may also coordinate the attribute management of the air interface. For example, the network equipment involved in this disclosure can be a base transceiver station (BTS) in a Global System for Mobile communications (GSM) or Code Division Multiple Access (CDMA) system, a NodeB in a wide-band Code Division Multiple Access (WCDMA) system, an evolved Node B (eNB or e-NodeB) in a long term evolution (LTE) system, a 5G base station (gNB) in a next generation system, a Home evolved Node B (HeNB), a relay node, a femto, a pico, etc., and is not limited in this disclosure. In some network structures, the network equipment may include centralized unit (CU) nodes and distributed unit (DU) nodes, and the centralized unit and distributed unit may be geographically separated.

[0139] Network devices and terminal devices can each use one or more antennas for Multiple Input Multiple Output (MIMO) transmission. MIMO transmission can be Single User MIMO (SU-MIMO) or Multiple User MIMO (MU-MIMO). Depending on the configuration and number of antenna combinations, MIMO transmission can be 2D MIMO, 3D MIMO, Full Dimension MIMO (FD-MIMO), or Massive MIMO, or it can be diversity transmission, pre-coded transmission, or beamforming transmission, etc.

[0140] It should be noted that A-IoT devices can be divided into the following three types:

[0141] Type 1 devices: Peak power consumption is approximately 1 μW, with energy storage capability, initial sampling frequency offset (SFO) up to 10X ppm, and the devices lack both downlink (DL) and uplink (UL) amplification. The device's UL transmission is achieved through backscattering on an externally provided carrier.

[0142] Type 2a devices: Peak power consumption ≤ several hundred μW, with energy storage capability, initial sampling frequency offset (SFO) up to 10X ppm, and DL and / or UL amplification capabilities. The device's UL transmission is backscattered on an externally provided carrier.

[0143] Type 2b devices: Peak power consumption ≤ several hundred μW, with energy storage capability, initial sampling frequency offset (SFO) up to 10X ppm, and DL and / or UL amplification capabilities. The UL transmission of the device is generated internally.

[0144] As shown in Figure 2, this embodiment of the present disclosure provides an information indication method, the method comprising:

[0145] Step 201: The first network element indicates the first information to the environmental IoT A-IoT device through the pattern of the first signal; or, the first network element indicates the first information to the environmental IoT A-IoT device through the pattern of the first signal and the first field of the device channel PRDCH from the physical reader.

[0146] The first signal is any one of the following: reader-to-device R2D preamble, R2D time acquisition signal, R2D timing acquisition signal, start indicator component, clock acquisition component;

[0147] The first information includes at least one of the following: R2D chip length, on / off keying OOK chip length, device-to-reader D2R chip length, PRDCH chip length, physical device-to-reader channel PDRCH chip length, R2D chip rate, OOK chip rate, D2R chip rate, PRDCH chip rate, and PDRCH chip rate; the chip rate M is used to indicate the number of chips contained in an Orthogonal Frequency Division Multiplexing (OFDM) symbol.

[0148] In this embodiment, the first network element indicates first information to the A-IoT device through a pattern of a first signal or through a pattern of the first signal and a first field of the PRDCH. The first information includes at least one of the following: R2D chip length, on / off keying OOK chip length, device-to-reader D2R chip length, PRDCH chip length, physical device-to-reader channel PDRCH chip length, R2D chip rate, OOK chip rate, D2R chip rate, PRDCH chip rate, and PDRCH chip rate. Using this information indication method, the first network element can indicate transmission parameters such as chip length or chip rate to the A-IoT device, enabling the A-IoT device to receive and decode the PRDCH based on these parameters. This improves the flexibility of PRDCH transmission parameter configuration and enhances the transmission spectrum efficiency of the A-IoT system.

[0149] Optionally, the first network element includes at least one of the following: a base station, a terminal, a reader, and an intermediate node.

[0150] As an optional embodiment, the start indication component includes at least one of the following: a start indication component in an R2D preamble, a start indication component in an R2D time acquisition signal, and a start indication component in an R2D timing acquisition signal;

[0151] And / or, the clock acquisition component includes at least one of the following: a clock acquisition component in the R2D preamble, a clock acquisition component in the R2D time acquisition signal, and a clock acquisition component in the R2D timing acquisition signal.

[0152] In at least one embodiment of this disclosure, the pattern of the first signal is different, and the value of the first information indicated by the pattern of the first signal is different.

[0153] Here, different values ​​of the first information refer to different values ​​of the same first information, rather than different values ​​of first information of different types. For example, different values ​​of R2D chip length, different values ​​of OOK chip length, different values ​​of D2R chip length, and different values ​​of chip rate.

[0154] Optionally, the difference in the pattern of the first signal can be determined by the following method:

[0155] The lengths of the first signals are different;

[0156] The first signal uses a different sequence;

[0157] The combination of high and low voltages in the first signal is different.

[0158] In at least one embodiment of this disclosure, the start indication component includes:

[0159] A low voltage lasting for N1 chips and a high voltage lasting for N2 chips; or,

[0160] A high voltage lasting for N1 chips and a low voltage lasting for N2 chips;

[0161] Where N1 and N2 are positive integers. Optionally, N2 is a positive integer greater than or equal to 2.

[0162] Preferably, the start indication component includes:

[0163] A low voltage lasting one chip and a high voltage lasting three chips; or,

[0164] A high voltage lasting for one chip and a low voltage lasting for three chips.

[0165] In at least one embodiment of this disclosure, the clock acquisition component uses a Manchester-coded sequence or a pulse interval coded (PIE) sequence.

[0166] And / or, the last bit of the symbol occupied by the clock acquisition component is a fixed value; the fixed value is bit 0 or bit 1; thereby ensuring that after adding the cyclic prefix CP, the voltage is fixed at high or low before the start of the indicator component.

[0167] As an optional embodiment, the clock acquisition component is composed of different sequences; and / or, the different sequences of the clock acquisition component correspond to different values ​​of the first information.

[0168] In at least one embodiment of this disclosure, the total length of the start indication component and the clock acquisition component is 1 OFDM symbol;

[0169] Alternatively, the total length of the first signal is one OFDM symbol.

[0170] In one implementation, the length of the start indication component is 1 / 4 OFDM symbol, and the length of the clock acquisition component is 3 / 4 OFDM symbol.

[0171] Alternatively, the start indicator component may consist of a low voltage lasting for one chip and a high voltage lasting for three chips.

[0172] In another implementation, the length of the start indication component is 38 sampling points, and the length of the clock acquisition component is 90 sampling points; wherein, the length of one OFDM symbol is 128 sampling points.

[0173] Alternatively, the start indicator component may consist of a low voltage lasting for 8 sampling points and a high voltage lasting for 30 sampling points.

[0174] Optionally, the last bit of the symbol occupied by the clock acquisition component is a first fixed value. If the first fixed value is 1, it can be guaranteed that after adding the cyclic prefix CP, the voltage is fixed at a high level before the start of the indicator component.

[0175] Alternatively, the last n bits of the symbol occupied by the clock acquisition component are a first fixed value; the duration corresponding to the n bits is greater than or equal to the duration corresponding to the cyclic prefix CP; for example, the duration corresponding to the last bit of the symbol occupied by the clock acquisition component and the CP length is fixed to a high voltage, so that after adding the cyclic prefix CP, the voltage is fixed to a high voltage before the start of the indicator component; wherein, the first fixed value is 0 or 1.

[0176] In at least one embodiment of this disclosure, the cyclic prefix CP of the OFDM symbol occupied by the first signal satisfies the following characteristics: CP is a high voltage; or, CP is a low voltage; or, there is no voltage transition edge during the duration of CP.

[0177] Optionally, in step 201, the first network element indicates first information to the environmental IoT A-IoT device through the pattern of the first signal, including:

[0178] The clock acquisition component indicates to the A-IoT device the chip length of the PRDCH, or the chip length of the PDRCH, or the chip rate of the PRDCH, or the chip rate of the PDRCH.

[0179] Alternatively, in step 201, the first network element indicates first information to the A-IoT device through the pattern of the first signal and the first field of the PRDCH, including:

[0180] The sequence of the clock-acquired components and the first field of the PRDCH are used to indicate to the A-IoT device the chip length or chip rate of the other parts of the PRDCH besides the first field.

[0181] Alternatively, the sequence of the clock-acquired components and the first field of the PDRCH can be used to indicate the chip length or chip rate of the PDRCH to the A-IoT device.

[0182] Wherein, the first field of the PRDCH occupies K bits of the PRDCH, where K is a positive integer;

[0183] Alternatively, the chip rate corresponding to the first field of the PRDCH is the same as the chip rate corresponding to the clock acquisition component;

[0184] Alternatively, the chip length corresponding to the first field of the PRDCH is the same as the chip length corresponding to the clock acquisition component.

[0185] In yet another optional embodiment of this disclosure, the total length of the start indication component and the clock acquisition component is related to the chip rate or chip length of the PRDCH. In other words, the total length of the start indication component and the clock acquisition component is variable and related to the chip rate or chip length.

[0186] Optionally, in step 201, the first network element indicates first information to the environmental IoT A-IoT device through the pattern of the first signal, including:

[0187] The length and / or pattern of the component obtained by the clock are used to indicate the chip rate or chip length of the PRDCH to the A-IoT device;

[0188] Alternatively, the length and / or pattern of the component obtained by the clock can be used to indicate the chip rate or chip length of the PDRCH to the A-IoT device.

[0189] Wherein, the chip length of the clock acquisition component is the same as the chip length of the PRDCH; or, the chip rate of the clock acquisition component is the same as the chip rate of the PRDCH.

[0190] Optionally, when the chip rate of PRDCH is less than 16, the last bit of the symbol occupied by the clock acquisition unit is a first fixed value;

[0191] or,

[0192] When the chip rate of PRDCH is greater than or equal to 16, the last n bits of the symbol occupied by the clock acquisition component are a first fixed value; the duration corresponding to the n bits is greater than or equal to the duration corresponding to the cyclic prefix CP; for example, when the chip rate of PRDCH is equal to 16, the duration corresponding to the last CP length of the symbol occupied by the clock acquisition component is fixed to a high level, so as to ensure that after adding the cyclic prefix CP, the clock acquisition component is previously fixed to a high voltage; wherein, the first fixed value is 0 or 1.

[0193] This disclosure provides several combinations of start indication components and clock acquisition components:

[0194] 1) When the chip rate of PRDCH is equal to 1, the start indication unit occupies 1 / 2 OFDM symbol or 1 OFDM symbol, and the clock acquisition unit occupies 3 OFDM symbols, 4 OFDM symbols, 8 OFDM symbols or 16 OFDM symbols;

[0195] 2) When the chip rate of PRDCH is equal to 2, the start indication unit occupies 1 / 2 OFDM symbol or 1 OFDM symbol, and the clock acquisition unit occupies 2 OFDM symbols, 3 OFDM symbols, 4 OFDM symbols or 8 OFDM symbols;

[0196] 3) When the chip rate of PRDCH is equal to 4, the start indication unit occupies 1 / 2 OFDM symbol or 1 OFDM symbol, and the clock acquisition unit occupies 1.5 OFDM symbols, 2 OFDM symbols or 4 OFDM symbols;

[0197] 4) When the chip rate of PRDCH is greater than or equal to 8, the start indication unit occupies 1 / 4 OFDM symbol and the clock acquisition unit occupies 3 / 4 OFDM symbol;

[0198] 5) When the chip rate of PRDCH is equal to 8, the start indication unit occupies 1 / 2 OFDM symbol or 1 OFDM symbol, and the clock acquisition unit occupies 1 OFDM symbol or 2 OFDM symbols;

[0199] 6) When the chip rate of PRDCH is equal to 16, the start indication unit occupies 1 / 2 OFDM symbol or 1 OFDM symbol, and the clock acquisition unit occupies 1 / 2 OFDM symbol or 1 OFDM symbol.

[0200] In summary, in this embodiment of the present disclosure, the first network element indicates first information to the A-IoT device through the pattern of the first signal or through the pattern of the first signal and the first field of the PRDCH. The first information includes at least one of the following: 2D chip length, on / off keying OOK chip length, device-to-reader D2R chip length, PRDCH chip length, physical device-to-reader channel PDRCH chip length, R2D chip rate, OOK chip rate, D2R chip rate, PRDCH chip rate, and PDRCH chip rate. Using this information indication method, the first network element can indicate transmission parameters such as chip length or chip rate to the device, thereby enabling the device to receive and decode the PRDCH based on the obtained transmission parameters, improving the flexibility of PRDCH transmission parameter configuration and enhancing the transmission spectrum efficiency of the A-IoT system.

[0201] As shown in Figure 3, this embodiment of the present disclosure also provides an information determination method, the method comprising:

[0202] Step 301: The environmental IoT A-IoT device determines the first information based on the pattern of the first signal sent by the first network element; or, the A-IoT device determines the first information based on the pattern of the first signal sent by the first network element and the first field of the physical reader to device channel PRDCH.

[0203] The first signal is any one of the following: reader-to-device R2D preamble, R2D time acquisition signal, R2D timing acquisition signal, start indicator component, clock acquisition component;

[0204] The first information includes at least one of the following: R2D chip length, on / off keying OOK chip length, device-to-reader D2R chip length, PRDCH chip length, physical device-to-reader channel PDRCH chip length, R2D chip rate, OOK chip rate, D2R chip rate, PRDCH chip rate, and PDRCH chip rate; the chip rate M is used to indicate the number of chips contained in an Orthogonal Frequency Division Multiplexing (OFDM) symbol.

[0205] In this embodiment, the A-IoT device determines first information by the indication of a pattern of a first signal or by the indication of a pattern of the first signal and a first field of the PRDCH. The first information includes at least one of the following: R2D chip length, OOK chip length of the on / off keying, D2R chip length from device to reader, chip length of the PRDCH, chip length of the physical device to reader channel PDRCH, R2D chip rate, OOK chip rate, D2R chip rate, PRDCH chip rate, and PDRCH chip rate. Using this information indication method, the first network element can indicate transmission parameters such as chip length or chip rate to the A-IoT device, enabling the A-IoT device to receive and decode the PRDCH based on the obtained transmission parameters, thus improving the flexibility of PRDCH transmission parameter configuration and enhancing the transmission spectrum efficiency of the A-IoT system.

[0206] Optionally, the first network element includes at least one of the following: a base station, a terminal, a reader, or an intermediate node.

[0207] As an optional embodiment, the start indication component includes at least one of the following: a start indication component in an R2D preamble, a start indication component in an R2D time acquisition signal, and a start indication component in an R2D timing acquisition signal;

[0208] And / or, the clock acquisition component includes at least one of the following: a clock acquisition component in the R2D preamble, a clock acquisition component in the R2D time acquisition signal, and a clock acquisition component in the R2D timing acquisition signal.

[0209] In at least one embodiment of this disclosure, the pattern of the first signal is different, and the value of the first information indicated by the pattern of the first signal is different.

[0210] Here, different values ​​of the first information refer to different values ​​of the same first information, rather than different values ​​of first information of different types. For example, different values ​​of R2D chip length, different values ​​of OOK chip length, different values ​​of D2R chip length, and different values ​​of chip rate.

[0211] Optionally, the difference in the pattern of the first signal can be determined by the following method:

[0212] The lengths of the first signals are different;

[0213] The first signal uses a different sequence;

[0214] The combination of high and low voltages in the first signal is different.

[0215] In at least one embodiment of this disclosure, the start indication component includes:

[0216] A low voltage lasting for N1 chips and a high voltage lasting for N2 chips; or,

[0217] A high voltage lasting for N1 chips and a low voltage lasting for N2 chips.

[0218] Where N1 and N2 are positive integers. Optionally, N2 is a positive integer greater than or equal to 2.

[0219] Preferably, the start indication component includes:

[0220] A low voltage lasting one chip and a high voltage lasting three chips; or,

[0221] A high voltage lasting for one chip and a low voltage lasting for three chips.

[0222] In at least one embodiment of this disclosure, the clock acquisition component uses a Manchester-coded sequence or a Pulse Interval Encoding (PIE) sequence.

[0223] And / or, the last bit of the symbol occupied by the clock acquisition component is a fixed value; the fixed value is bit 0 or bit 1; thereby ensuring that after adding the cyclic prefix CP, the voltage is fixed at high or low before the start of the indicator component.

[0224] As an optional embodiment, the clock acquisition component is composed of different sequences; and / or, the different sequences of the clock acquisition component correspond to different values ​​of the first information.

[0225] In at least one embodiment of this disclosure, the total length of the start indication component and the clock acquisition component is 1 OFDM symbol;

[0226] Alternatively, the total length of the first signal is one OFDM symbol.

[0227] In one implementation, the length of the start indication component is 1 / 4 OFDM symbol, and the length of the clock acquisition component is 3 / 4 OFDM symbol.

[0228] Alternatively, the start indicator component may consist of a low voltage lasting for one chip and a high voltage lasting for three chips.

[0229] In another implementation, the length of the start indication component is 38 sampling points, and the length of the clock acquisition component is 90 sampling points; wherein, the length of one OFDM symbol is 128 sampling points.

[0230] Alternatively, the start indicator component may consist of a low voltage lasting for 8 sampling points and a high voltage lasting for 30 sampling points.

[0231] Optionally, the last bit of the symbol occupied by the clock acquisition component is a first fixed value. If the first fixed value is 1, it can be guaranteed that after adding the cyclic prefix CP, the voltage is fixed at a high level before the start of the indicator component.

[0232] Alternatively, the last n bits of the symbol occupied by the clock acquisition component are a first fixed value; the duration corresponding to the n bits is greater than or equal to the duration corresponding to the cyclic prefix CP; for example, the duration corresponding to the last bit of the symbol occupied by the clock acquisition component and the CP length is fixed to a high voltage, so that after adding the cyclic prefix CP, the voltage is fixed to a high voltage before the start of the indicator component; wherein, the first fixed value is 0 or 1.

[0233] In at least one embodiment of this disclosure, the cyclic prefix CP of the OFDM symbol occupied by the first signal satisfies the following characteristics: CP is a high voltage; or, CP is a low voltage; or, there is no voltage transition edge during the duration of CP.

[0234] Optionally, the first network element indicates the chip length of the PRDCH, or the chip length of the PDRCH, or the chip rate of the PRDCH, or the chip rate of the PDRCH to the A-IoT device through the sequence of the clock acquisition component.

[0235] Alternatively, the first network element obtains the sequence of the components and the first field of the PRDCH through the clock to indicate to the A-IoT device the chip length or chip rate of the other parts of the PRDCH besides the first field;

[0236] Alternatively, the first network element obtains the sequence of the components and the first field of the PDRCH through the clock to indicate the chip length or chip rate of the PDRCH to the A-IoT device.

[0237] Wherein, the first field of the PRDCH occupies K bits of the PRDCH, where K is a positive integer;

[0238] Alternatively, the chip rate corresponding to the first field of the PRDCH is the same as the chip rate corresponding to the clock acquisition component;

[0239] Alternatively, the chip length corresponding to the first field of the PRDCH is the same as the chip length corresponding to the clock acquisition component.

[0240] In yet another optional embodiment of this disclosure, the total length of the start indication component and the clock acquisition component is related to the chip rate or chip length of the PRDCH. In other words, the total length of the start indication component and the clock acquisition component is variable and related to the chip rate or chip length.

[0241] Optionally, the first network element uses the clock to obtain the length and / or pattern of the component to indicate the chip rate or chip length of the PRDCH to the A-IoT device;

[0242] Alternatively, the first network element may use the clock to obtain the length and / or pattern of the component to indicate the chip rate or chip length of the PDRCH to the A-IoT device.

[0243] Wherein, the chip length of the clock acquisition component is the same as the chip length of the PRDCH; or, the chip rate of the clock acquisition component is the same as the chip rate of the PRDCH.

[0244] Optionally, when the chip rate of PRDCH is less than 16, the last bit of the symbol occupied by the clock acquisition unit is a first fixed value;

[0245] or,

[0246] When the chip rate of PRDCH is greater than or equal to 16, the last n bits of the symbol occupied by the clock acquisition component are a first fixed value; the duration corresponding to the n bits is greater than or equal to the duration corresponding to the cyclic prefix CP; for example, when the chip rate of PRDCH is equal to 16, the duration corresponding to the last CP length of the symbol occupied by the clock acquisition component is fixed to a high level, so as to ensure that after adding the cyclic prefix CP, the clock acquisition component is previously fixed to a high voltage; wherein, the first fixed value is 0 or 1.

[0247] This disclosure provides several combinations of start indication components and clock acquisition components:

[0248] 1) When the chip rate of PRDCH is equal to 1, the start indication unit occupies 1 / 2 OFDM symbol or 1 OFDM symbol, and the clock acquisition unit occupies 3 OFDM symbols, 4 OFDM symbols, 8 OFDM symbols or 16 OFDM symbols;

[0249] 2) When the chip rate of PRDCH is equal to 2, the start indication unit occupies 1 / 2 OFDM symbol or 1 OFDM symbol, and the clock acquisition unit occupies 2 OFDM symbols, 3 OFDM symbols, 4 OFDM symbols or 8 OFDM symbols;

[0250] 3) When the chip rate of PRDCH is equal to 4, the start indication unit occupies 1 / 2 OFDM symbol or 1 OFDM symbol, and the clock acquisition unit occupies 1.5 OFDM symbols, 2 OFDM symbols or 4 OFDM symbols;

[0251] 4) When the chip rate of PRDCH is greater than or equal to 8, the start indication unit occupies 1 / 4 OFDM symbol and the clock acquisition unit occupies 3 / 4 OFDM symbol;

[0252] 5) When the chip rate of PRDCH is equal to 8, the start indication unit occupies 1 / 2 OFDM symbol or 1 OFDM symbol, and the clock acquisition unit occupies 1 OFDM symbol or 2 OFDM symbols;

[0253] 6) When the chip rate of PRDCH is equal to 16, the start indication unit occupies 1 / 2 OFDM symbol or 1 OFDM symbol, and the clock acquisition unit occupies 1 / 2 OFDM symbol or 1 OFDM symbol.

[0254] In summary, in this embodiment of the present disclosure, the A-IoT device determines the first information by the indication of the pattern of the first signal or by the indication of the pattern of the first signal and the first field of the PRDCH. The first information includes at least one of the following: R2D chip length, on / off keying OOK chip length, device-to-reader D2R chip length, PRDCH chip length, physical device-to-reader channel PDRCH chip length, R2D chip rate, OOK chip rate, D2R chip rate, PRDCH chip rate, and PDRCH chip rate. Using this information indication method, the first network element can indicate transmission parameters such as chip length or chip rate to the A-IoT device, thereby enabling the A-IoT device to receive and decode the PRDCH based on the obtained transmission parameters, improving the flexibility of PRDCH transmission parameter configuration and enhancing the transmission spectrum efficiency of the A-IoT system.

[0255] To more clearly describe the information indication method provided in the embodiments of this disclosure, several examples are given below.

[0256] Example 1

[0257] The first network element indicates first information to the A-IoT device through the pattern of the first signal; the first signal is any one of the following signals: reader-to-device R2D preamble, R2D time acquisition signal, R2D timing acquisition signal, start indication component, clock acquisition component; the first information includes at least one of the following: R2D chip length, on / off key control OOK chip length, device-to-reader D2R chip length, PRDCH chip length, physical device-to-reader channel PDRCH chip length, R2D chip rate, OOK chip rate, D2R chip rate, PRDCH chip rate, and PDRCH chip rate; the chip rate M is used to indicate the number of chips contained in an orthogonal frequency division multiplexing (OFDM) symbol.

[0258] Before receiving the PRDCH sent by the first network element, the A-IoT device first needs to know the transmission information such as the chip length or chip rate used by the PRDCH. Since there is no broadcast channel in the A-IoT system, this information cannot be broadcast to the device. Therefore, this information needs to be communicated to the A-IoT device through the pattern of the first signal, or the pattern of the first signal and the first field of the PRDCH, so that the A-IoT device can demodulate and decode the PRDCH based on the chip length or chip rate information.

[0259] In this example, as shown in Figure 4:

[0260] The start indicator component and clock acquire the component with a total length of 1 OFDM symbol.

[0261] The start indicator part length is 1 / 4 OFDM symbol, and the clock acquires part length 3 / 4 OFDM symbol.

[0262] The start indicator consists of a low level lasting for one chip and a high level lasting for three chips, with a chip rate M = 16.

[0263] The clock acquisition unit consists of different sequences, with a chip rate of M=16.

[0264] The last bit of the clock acquisition unit is fixed at 1, which ensures that after adding the cyclic prefix CP, it is fixed at a high level before the start of the indicator unit.

[0265] The cyclic prefix CP is a combination of low and high levels.

[0266] The reader uses a clock to acquire different sequences of components to indicate different chip rates M of the PRDCH.

[0267] As shown in Table 1, the first network element can use different sequences of the clock acquisition component to indicate different chip rates M of the PRDCH. Different clock acquisition component sequences also correspond to different clock acquisition component patterns. In the figure below, the sequence of the clock acquisition component is 010101, which corresponds to a chip rate of 16 in the PRDCH and a chip length of 8 sampling points.

[0268] Table 1

[0269] This example illustrates a scheme for indicating first information using R2D preamble A-IoT devices. Different patterns of the clock acquisition component of the R2D preamble can be used to indicate the first information. Using this method, the first network element can indicate transmission information such as chip length or chip rate to the device, thereby enabling the device to receive and decode PRDCH based on the obtained transmission information such as chip length or chip rate. This improves the flexibility of PRDCH transmission parameter configuration and also enhances the transmission spectrum efficiency of the A-IoT system.

[0270] Example 2

[0271] The first network element indicates first information to the A-IoT device through the pattern of the first signal and the first field of the physical reader-to-device channel PRDCH; the first signal is any one of the following signals: reader-to-device R2D preamble, R2D time acquisition signal, R2D timing acquisition signal, start indication component, clock acquisition component; the first information includes at least one of the following: R2D chip length, on / off key control OOK chip length, device-to-reader D2R chip length, PRDCH chip length, physical device-to-reader channel PDRCH chip length, R2D chip rate, OOK chip rate, D2R chip rate, PRDCH chip rate, and PDRCH chip rate; the chip rate M is used to indicate the number of chips contained in an orthogonal frequency division multiplexing (OFDM) symbol.

[0272] Before receiving the PRDCH sent by the first network element, the A-IoT device first needs to know the transmission information such as the chip length or chip rate used by the PRDCH. Since there is no broadcast channel in the A-IoT system, this information cannot be broadcast to the A-IoT device. Therefore, this information needs to be communicated to the A-IoT device through the pattern of the first signal, or the pattern of the first signal and the first field of the PRDCH, so that the A-IoT device can demodulate and decode the PRDCH based on the chip length or chip rate information.

[0273] In this example, as shown in Figure 5:

[0274] The start indicator component and clock acquire the component with a total length of 1 OFDM symbol.

[0275] The start indicator part length is 1 / 4 OFDM symbol, and the clock acquires part length 3 / 4 OFDM symbol.

[0276] The start indicator consists of a low level lasting one chip and a high level lasting three chips, with a chip rate M = 16.

[0277] The clock acquisition unit consists of different sequences, with a chip rate of M=8.

[0278] The last bit of the clock acquisition unit is fixed at 1, which ensures that after adding the cyclic prefix CP, it is fixed at a high level before the start of the indicator unit.

[0279] The first field of PRDCH occupies 1 bit of the PRDCH control field.

[0280] The M value used in the first field of PRDCH is the same as the M value of the clock acquisition component.

[0281] The cyclic prefix CP is high.

[0282] The first network element uses the clock acquisition component's different sequences and the first field of the PRDCH to indicate the different chip rates M of the PRDCH except for the first field.

[0283] Since the M value used in the first field of the PRDCH is the same as the M value of the clock acquisition component, the A-IoT device can first obtain the M value of the first field of the PRDCH by detecting the M value of the clock acquisition component, and then obtain the chip rate of other parts of the PRDCH by using the sequence used by the clock acquisition component and the first field of the PRDCH. As shown in Table 2, the first network element can use different sequences of the clock acquisition component and the first field of the PRDCH to indicate different chip rates M of the PRDCH. Different clock acquisition component sequences also correspond to different clock acquisition component patterns. In Table 2, the sequence of the clock acquisition component is 111, the 1 bit corresponding to the first field of the PRDCH is 0, which corresponds to a chip rate of 16 and a PRDCH chip length of 8 sampling points.

[0284] Table 2

[0285] This scheme, which uses R2D preamble and PRDCH control bits to indicate first information to A-IoT devices, allows the reader to use the clock of the R2D preamble to acquire different patterns of the components and the control bits of the PRDCH to indicate first information. Using this method, the reader can indicate transmission information such as chip length or chip rate to the A-IoT device, enabling the A-IoT device to receive and decode the PRDCH based on the obtained transmission information such as chip length or chip rate. This improves the flexibility of PRDCH transmission parameter configuration and also enhances the transmission spectrum efficiency of the A-IoT system.

[0286] Example 3

[0287] The first network element indicates first information to the A-IoT device through the pattern of the first signal; the first signal is any one of the following signals: reader-to-device R2D preamble, R2D time acquisition signal, R2D timing acquisition signal, start indication component, clock acquisition component; the first information includes at least one of the following: R2D chip length, on / off key control OOK chip length, device-to-reader D2R chip length, PRDCH chip length, physical device-to-reader channel PDRCH chip length, R2D chip rate, OOK chip rate, D2R chip rate, PRDCH chip rate, and PDRCH chip rate; the chip rate M is used to indicate the number of chips contained in an orthogonal frequency division multiplexing (OFDM) symbol.

[0288] Before receiving the PRDCH sent by the first network element, the A-IoT device first needs to know the transmission information such as the chip length or chip rate used by the PRDCH. Since there is no broadcast channel in the A-IoT system, this information cannot be broadcast to the A-IoT device. Therefore, this information needs to be communicated to the A-IoT device through the pattern of the first signal, or the pattern of the first signal and the first field of the PRDCH, so that the A-IoT device can demodulate and decode the PRDCH based on the chip length or chip rate information.

[0289] In this example, as shown in Figure 6:

[0290] The start indicator component and clock acquire the component with a total length of 1 OFDM symbol.

[0291] With a total of 128 sampling points for one OFDM symbol, the start indicator component has a duration of 38 sampling points, and the clock acquisition component has a duration of 90 sampling points.

[0292] The start indicator consists of a low level lasting for 8 sampling points and a high level lasting for 30 sampling points.

[0293] The clock acquisition unit consists of different sequences, with a chip rate of M=16.

[0294] By fixing the last duration of the symbol occupied by the clock acquisition component, corresponding to the CP length, to a high level, it can be ensured that after adding the cyclic prefix CP, the level is fixed to a high level before the start of the indicator component.

[0295] The cyclic prefix CP is high.

[0296] The first network element uses different sequences of clock acquisition components to indicate different chip rates M of the PRDCH.

[0297] As shown in Table 3, the first network element can use different sequences of the clock acquisition component to indicate different chip rates M of the PRDCH. Different clock acquisition component sequences also correspond to different clock acquisition component patterns. In the figure below, the sequence of the clock acquisition component is 01010, which corresponds to a chip rate of 16 in the PRDCH and a chip length of 8 sampling points.

[0298] Table 3

[0299] This scheme, employing an R2D preamble device to indicate the first information, utilizes different patterns of the R2D preamble clock acquisition component to indicate the first information. Using this method, the first network element can indicate transmission information such as chip length or chip rate to the A-IoT device. This allows the A-IoT device to receive and decode the PRDCH based on the obtained chip length or chip rate information, improving the flexibility of PRDCH transmission parameter configuration and enhancing the transmission spectrum efficiency of the A-IoT system. Furthermore, it ensures that the CP (Content Processing) is entirely high-level.

[0300] Example 4

[0301] The first network element indicates first information to the A-IoT device through the pattern of the first signal; the first signal is any one of the following signals: reader-to-device R2D preamble, R2D time acquisition signal, R2D timing acquisition signal, start indication component, clock acquisition component; the first information includes at least one of the following: R2D chip length, on / off key control OOK chip length, device-to-reader D2R chip length, PRDCH chip length, physical device-to-reader channel PDRCH chip length, R2D chip rate, OOK chip rate, D2R chip rate, PRDCH chip rate, and PDRCH chip rate; the chip rate M is used to indicate the number of chips contained in an orthogonal frequency division multiplexing (OFDM) symbol.

[0302] Before receiving the PRDCH sent by the first network element, the A-IoT device first needs to know the transmission information such as the chip length or chip rate used by the PRDCH. Since there is no broadcast channel in the A-IoT system, this information cannot be broadcast to the A-IoT device. Therefore, this information needs to be communicated to the A-IoT device through the pattern of the first signal, or the pattern of the first signal and the first field of the PRDCH, so that the A-IoT device can demodulate and decode the PRDCH based on the chip length or chip rate information.

[0303] In this example, as shown in Figures 7, 8, 9, 10, and 11:

[0304] The total length of the start indicator component and clock acquisition component is variable and is related to the chip rate M value of the PRDCH.

[0305] The reader uses a clock to acquire different lengths and / or different patterns of the components to indicate different chip rates M of the PRDCH.

[0306] The chip length of the clock acquisition unit is the same as the chip length of the PRDCH. Alternatively, the chip rate M value of the clock acquisition unit is the same as the chip rate M value of the PRDCH.

[0307] When the chip rate M is 1, the start indicator component occupies 1 symbol, and the clock acquisition component occupies 3 symbols.

[0308] When the chip rate M is 2, the start indicator component occupies 1 symbol, and the clock acquisition component occupies 3 symbols.

[0309] When the chip rate M is 4, the starting indicator component occupies 1 / 2 symbol, and the clock acquisition component occupies 1.5 symbols.

[0310] For chip rate M values ​​greater than or equal to 8, the start indicator component occupies 1 / 4 of a symbol, and the clock acquisition component occupies 3 / 4 of a symbol.

[0311] As shown in Table 4, the first network element can use the chip rate M value of the clock acquisition unit to indicate the chip rate M value of the PRDCH. In Figure 7, the clock acquisition unit M = 1, which corresponds to an M value of 1 in the PRDCH. In Figure 8, the clock acquisition unit M = 2, which corresponds to an M value of 2 in the PRDCH. In Figure 9, the clock acquisition unit M = 4, which corresponds to an M value of 4 in the PRDCH. In Figure 10, the clock acquisition unit M = 8, which corresponds to an M value of 8 in the PRDCH. In Figure 11, the clock acquisition unit M = 16, which corresponds to an M value of 16 in the PRDCH.

[0312] Table 4

[0313] This scheme, employing R2D preamble for A-IoT devices to indicate first information, utilizes different lengths and patterns of the R2D preamble's clock acquisition component to indicate the first information. Using this method, the first network element can indicate transmission information such as chip length or chip rate to the A-IoT device. This allows the A-IoT device to receive and decode the PRDCH based on the obtained chip length or chip rate information, improving the flexibility of PRDCH transmission parameter configuration and enhancing the transmission spectrum efficiency of the A-IoT system. Furthermore, since the M value of the clock acquisition component is the same as the M value of the PRDCH, and the sequence of the clock acquisition component is fixed, it eliminates the need to use different sequences of the clock acquisition component to indicate different M values ​​of the PRDCH. This avoids blindly detecting the clock acquisition sequence, improving the accuracy of the A-IoT device in detecting the clock acquisition component sequence.

[0314] Example 5

[0315] The first network element indicates first information to the A-IoT device through the pattern of the first signal; the first signal is any one of the following signals: reader-to-device R2D preamble, R2D time acquisition signal, R2D timing acquisition signal, start indication component, clock acquisition component; the first information includes at least one of the following: R2D chip length, on / off key control OOK chip length, device-to-reader D2R chip length, PRDCH chip length, physical device-to-reader channel PDRCH chip length, R2D chip rate, OOK chip rate, D2R chip rate, PRDCH chip rate, and PDRCH chip rate; the chip rate M is used to indicate the number of chips contained in an orthogonal frequency division multiplexing (OFDM) symbol.

[0316] Before receiving the PRDCH sent by the first network element, the A-IoT device first needs to know the transmission information such as the chip length or chip rate used by the PRDCH. Since there is no broadcast channel in the A-IoT system, this information cannot be broadcast to the A-IoT device. Therefore, this information needs to be communicated to the A-IoT device through the pattern of the first signal, or the pattern of the first signal and the first field of the PRDCH, so that the A-IoT device can demodulate and decode the PRDCH based on the chip length or chip rate information.

[0317] In this example, as shown in Figures 12, 13, 14, 15, 16, and 17:

[0318] The total length of the start indicator component and clock acquisition component is variable and depends on the chip rate M value.

[0319] The reader uses a clock to acquire different lengths and / or different patterns of the components to indicate different chip rates M of the PRDCH.

[0320] The chip length of the clock acquisition unit is the same as the chip length of the PRDCH. Alternatively, the chip rate M value of the clock acquisition unit is the same as the chip rate M value of the PRDCH.

[0321] When M < 16, the cyclic prefix CP is either low or high, and there will be no combination of low and high levels.

[0322] When M=16, the last duration of the symbol occupied by the clock acquisition component, corresponding to the CP length, is fixed at a high level, thus ensuring that the clock acquisition component remains fixed at a high level after the addition of the cyclic prefix CP.

[0323] When the chip rate M is 1, the start indicator component occupies 1 symbol, and the clock acquisition component occupies 16 symbols.

[0324] When the chip rate M is 2, the start indicator component occupies 1 symbol, and the clock acquisition component occupies 8 symbols.

[0325] When the chip rate M is 4, the start indicator component occupies 1 symbol, and the clock acquisition component occupies 4 symbols.

[0326] When the chip rate M is 8, the start indicator unit occupies 1 symbol, and the clock acquisition unit occupies 2 symbols.

[0327] When the chip rate M is 16, the start indicator unit occupies 1 symbol, and the clock acquisition unit occupies 1 symbol.

[0328] As shown in Table 5, the first network element can use the chip rate M value of the clock acquisition unit to indicate the chip rate M value of the PRDCH. In Figure 12, the clock acquisition unit M = 1, which corresponds to an M value of 1 in the PRDCH. In Figure 13, the clock acquisition unit M = 2, which corresponds to an M value of 2 in the PRDCH. In Figure 14, the clock acquisition unit M = 4, which corresponds to an M value of 4 in the PRDCH. In Figure 15, the clock acquisition unit M = 8, which corresponds to an M value of 8 in the PRDCH. In Figures 16 and 17, the clock acquisition unit M = 16, which corresponds to an M value of 16 in the PRDCH.

[0329] For M=16, there are two possible candidate patterns, Figure 16 and Figure 17. As shown in Figure 16, the last duration of the symbol occupied by the clock acquisition component, corresponding to the CP length (the last 10 sampling points in Figure 16, including 2 low-level and 8 high-level sampling points), is placed at the very beginning of the symbol occupied by the clock acquisition component, becoming the CP (Cyclic Prefix). However, this introduces a level transition edge (i.e., a transition from a low level of 2 sampling points to a high level of 8 sampling points) within the CP duration of the symbol occupied by the clock acquisition component. This negatively impacts the A-IoT device's detection of chip length or the M value. To avoid introducing a level transition edge in the CP, as shown in Figure 17, the last duration of the symbol occupied by the clock acquisition component, corresponding to the CP length (the last 10 sampling points in Figure 17), is fixed at a high level. This ensures that after adding the cyclic prefix CP, the clock acquisition component remains at a high level, preventing the introduction of a level transition edge within the CP duration of the symbol occupied by the clock acquisition component.

[0330] Table 5

[0331] This scheme, employing R2D preamble for A-IoT devices to indicate first information, utilizes different lengths and patterns of the R2D preamble's clock acquisition component to indicate the first information. Using this method, the first network element can indicate transmission information such as chip length or chip rate to the A-IoT device. This allows the A-IoT device to receive and decode the PRDCH based on the obtained chip length or chip rate information, improving the flexibility of PRDCH transmission parameter configuration and enhancing the transmission spectrum efficiency of the A-IoT system. Furthermore, since the M value of the clock acquisition component is the same as the M value of the PRDCH, and the sequence of the clock acquisition component is fixed, it eliminates the need to use different sequences of the clock acquisition component to indicate different M values ​​of the PRDCH. This avoids blindly detecting the clock acquisition sequence, improving the accuracy of the A-IoT device in detecting the clock acquisition component sequence.

[0332] Example 6

[0333] The first network element indicates first information to the A-IoT device through the pattern of the first signal, or through the pattern of the first signal and the first field of the physical reader-to-device channel PRDCH; the first signal is any one of the following signals: reader-to-device R2D preamble, R2D time acquisition signal, R2D timing acquisition signal, start indication component, clock acquisition component; the first information includes at least one of the following: R2D chip length, on / off key control OOK chip length, device-to-reader D2R chip length, PRDCH chip length, physical device-to-reader channel PDRCH chip length, R2D chip rate, OOK chip rate, D2R chip rate, PRDCH chip rate, and PDRCH chip rate; the chip rate M is used to indicate the number of chips contained in an orthogonal frequency division multiplexing (OFDM) symbol.

[0334] Before receiving the PRDCH sent by the first network element, the A-IoT device first needs to know the transmission information such as the chip length or chip rate used by the PRDCH. Since there is no broadcast channel in the A-IoT system, this information cannot be broadcast to the A-IoT device. Therefore, this information needs to be communicated to the A-IoT device through the pattern of the first signal, or the pattern of the first signal and the first field of the PRDCH, so that the A-IoT device can demodulate and decode the PRDCH based on the chip length or chip rate information.

[0335] In this example, at least one of the following information can be used to indicate the D2R chip length, or the D2R chip rate M, or the chip length or chip rate used by the PDRCH:

[0336] The pattern shown in Example 1 is a start indicator component and / or a clock acquisition component.

[0337] The pattern shown in Example 2 is for the start indicator component and / or the clock acquisition component.

[0338] The pattern shown in Example 3 is a start indicator component and / or a clock acquisition component.

[0339] The pattern shown in Example 4 is for the start indicator component and / or the clock acquisition component.

[0340] The pattern shown in Example 5 is a start indicator component and / or a clock acquisition component.

[0341] The first field of PRDCH.

[0342] As shown in Figure 18, this embodiment of the present disclosure also provides a first network element, including a memory 1820, a transceiver 1810, and a processor 1800:

[0343] The memory 1820 is used to store computer programs; the transceiver 1810 is used to send and receive data under the control of the processor 1800; the processor 1800 is used to read the computer program in the memory 1820 and perform the following operations:

[0344] The first information is indicated to the environmental IoT A-IoT device by means of the pattern of the first signal; or, the first information is indicated to the A-IoT device by means of the pattern of the first signal and the first field of the device channel PRDCH from the physical reader.

[0345] The first signal is any one of the following: reader-to-device R2D preamble, R2D time acquisition signal, R2D timing acquisition signal, start indicator component, clock acquisition component;

[0346] The first information includes at least one of the following: R2D chip length, on / off keying OOK chip length, device-to-reader D2R chip length, PRDCH chip length, physical device-to-reader channel PDRCH chip length, R2D chip rate, OOK chip rate, D2R chip rate, PRDCH chip rate, and PDRCH chip rate; the chip rate M is used to indicate the number of chips contained in an Orthogonal Frequency Division Multiplexing (OFDM) symbol.

[0347] As an optional embodiment, the first network element includes at least one of the following:

[0348] Base station, terminal, reader, intermediate node.

[0349] As an optional embodiment, the start indication component includes at least one of the following: a start indication component in an R2D preamble, a start indication component in an R2D time acquisition signal, and a start indication component in an R2D timing acquisition signal;

[0350] And / or,

[0351] The clock acquisition component includes at least one of the following: a clock acquisition component in an R2D preamble, a clock acquisition component in an R2D time acquisition signal, and a clock acquisition component in an R2D timing acquisition signal.

[0352] As an optional embodiment, the pattern of the first signal is different, and the value of the first information indicated by the pattern of the first signal is different.

[0353] As an optional embodiment, the difference in the patterns of the first signal is determined by the following method:

[0354] The lengths of the first signals are different;

[0355] The first signal uses a different sequence;

[0356] The combination of high and low voltages in the first signal is different.

[0357] As an optional embodiment, the start indication component includes:

[0358] A low voltage lasting for N1 chips and a high voltage lasting for N2 chips; or,

[0359] A high voltage lasting for N1 chips and a low voltage lasting for N2 chips;

[0360] Where N1 and N2 are positive integers.

[0361] As an optional embodiment, the start indication component includes:

[0362] A low voltage lasting one chip and a high voltage lasting three chips; or,

[0363] A high voltage lasting for one chip and a low voltage lasting for three chips.

[0364] As an optional embodiment, the clock acquisition component uses a Manchester-coded sequence or a pulse interval-coded sequence.

[0365] As an optional embodiment, the total length of the start indication component and the clock acquisition component is 1 OFDM symbol;

[0366] or,

[0367] The total length of the first signal is one OFDM symbol.

[0368] As an optional embodiment, the length of the start indication component is 1 / 4 OFDM symbol, and the length of the clock acquisition component is 3 / 4 OFDM symbol;

[0369] or,

[0370] The start indication component has a length of 38 sampling points, and the clock acquisition component has a length of 90 sampling points; wherein, the length of one OFDM symbol is 128 sampling points.

[0371] or,

[0372] The start indicator consists of a low voltage lasting for 8 sampling points and a high voltage lasting for 30 sampling points.

[0373] As an optional embodiment, the last bit of the symbol occupied by the clock acquisition component is a first fixed value;

[0374] or,

[0375] The last n bits of the symbol occupied by the clock acquisition component are a first fixed value; the duration corresponding to the n bits is greater than or equal to the duration corresponding to the cyclic prefix CP.

[0376] The first fixed value is either 0 or 1.

[0377] As an optional embodiment, the cyclic prefix CP of the OFDM symbol occupied by the first signal satisfies the following characteristics:

[0378] CP stands for high voltage;

[0379] or,

[0380] CP is low voltage;

[0381] or,

[0382] There is no voltage transition edge during the duration of CP.

[0383] As an optional embodiment, the processor is also configured to read a computer program from the memory and perform the following operations:

[0384] The clock acquisition component indicates to the A-IoT device the chip length of the PRDCH, or the chip length of the PDRCH, or the chip rate of the PRDCH, or the chip rate of the PDRCH.

[0385] or,

[0386] The sequence of the clock-acquired components and the first field of the PRDCH are used to indicate to the A-IoT device the chip length or chip rate of the other parts of the PRDCH besides the first field.

[0387] or,

[0388] The sequence of the clock-acquired components and the first field of the PDRCH are used to indicate the chip length or chip rate of the PDRCH to the A-IoT device.

[0389] As an optional embodiment, the first field of the PRDCH occupies K bits of the PRDCH, where K is a positive integer;

[0390] or,

[0391] The chip rate corresponding to the first field of the PRDCH is the same as the chip rate corresponding to the clock acquisition component.

[0392] or,

[0393] The chip length corresponding to the first field of the PRDCH is the same as the chip length corresponding to the clock acquisition component.

[0394] As an optional embodiment, the total length of the start indication component and the clock acquisition component is related to the chip rate of the PRDCH or the chip length of the PRDCH.

[0395] As an optional embodiment, the processor is also configured to read a computer program from the memory and perform the following operations:

[0396] The length and / or pattern of the component obtained by the clock are used to indicate the chip rate or chip length of the PRDCH to the A-IoT device;

[0397] or,

[0398] The length and / or pattern of the component obtained by the clock are used to indicate the chip rate or chip length of the PDRCH to the A-IoT device.

[0399] As an optional embodiment, the chip length of the clock acquisition component is the same as the chip length of the PRDCH;

[0400] or,

[0401] The chip rate of the clock acquisition component is the same as the chip rate of the PRDCH.

[0402] As an optional embodiment, when the chip rate of PRDCH is less than 16, the last bit of the symbol occupied by the clock acquisition unit is a first fixed value;

[0403] or,

[0404] When the chip rate of PRDCH is greater than or equal to 16, the last n bits of the symbol occupied by the clock acquisition unit are a first fixed value; the duration corresponding to the n bits is greater than or equal to the duration corresponding to the cyclic prefix CP;

[0405] The first fixed value is either 0 or 1.

[0406] As an optional embodiment, when the chip rate of PRDCH is equal to 1, the start indication component occupies 1 / 2 OFDM symbol or 1 OFDM symbol, and the clock acquisition component occupies 3 OFDM symbols, 4 OFDM symbols, 8 OFDM symbols or 16 OFDM symbols;

[0407] or,

[0408] When the chip rate of PRDCH is equal to 2, the start indication unit occupies 1 / 2 OFDM symbol or 1 OFDM symbol, and the clock acquisition unit occupies 2 OFDM symbols, 3 OFDM symbols, 4 OFDM symbols or 8 OFDM symbols;

[0409] or,

[0410] When the chip rate of PRDCH is equal to 4, the start indication unit occupies 1 / 2 OFDM symbol or 1 OFDM symbol, and the clock acquisition unit occupies 1.5 OFDM symbols, 2 OFDM symbols or 4 OFDM symbols;

[0411] or,

[0412] When the chip rate of PRDCH is greater than or equal to 8, the start indication component occupies 1 / 4 OFDM symbol and the clock acquisition component occupies 3 / 4 OFDM symbol;

[0413] or,

[0414] When the chip rate of PRDCH is equal to 8, the start indication unit occupies 1 / 2 OFDM symbol or 1 OFDM symbol, and the clock acquisition unit occupies 1 OFDM symbol or 2 OFDM symbols;

[0415] or,

[0416] When the chip rate of PRDCH is equal to 16, the start indication component occupies 1 / 2 OFDM symbol or 1 OFDM symbol, and the clock acquisition component occupies 1 / 2 OFDM symbol or 1 OFDM symbol.

[0417] In Figure 18, the bus architecture may include any number of interconnected buses and bridges, specifically linking various circuits of one or more processors represented by processor 1800 and memory represented by memory 1820. The bus architecture may also link various other circuits such as peripheral devices, voltage regulators, and power management circuits, which are well known in the art and therefore will not be described further herein. The bus interface provides an interface. Transceiver 1810 may be multiple elements, including transmitters and receivers, providing units for communicating with various other devices over transmission media, including wireless channels, wired channels, optical fibers, etc. Processor 1800 is responsible for managing the bus architecture and general processing, and memory 1820 may store data used by processor 1800 during operation.

[0418] The processor 1800 can be a central processing unit (CPU), an application-specific integrated circuit (ASIC), a field-programmable gate array (FPGA), or a complex programmable logic device (CPLD). The processor can also adopt a multi-core architecture.

[0419] In this embodiment, the first network element indicates first information to the A-IoT device through a pattern of a first signal or through a pattern of the first signal and a first field of the PRDCH. The first information includes at least one of the following: R2D chip length, on / off keying OOK chip length, device-to-reader D2R chip length, PRDCH chip length, physical device-to-reader channel PDRCH chip length, R2D chip rate, OOK chip rate, D2R chip rate, PRDCH chip rate, and PDRCH chip rate. Using this information indication method, the first network element can indicate transmission parameters such as chip length or chip rate to the A-IoT device, enabling the A-IoT device to receive and decode the PRDCH based on the obtained transmission parameters, thus improving the flexibility of PRDCH transmission parameter configuration and enhancing the transmission spectrum efficiency of the A-IoT system.

[0420] It should be noted that the first network element provided in this embodiment is a network element capable of executing the above information indication method. Therefore, all embodiments of the above information indication method are applicable to this network element and can achieve the same or similar beneficial effects, which will not be repeated here.

[0421] As shown in Figure 19, this disclosure also provides an environmental Internet of Things (A-IoT) device, including a memory 1920, a transceiver 1910, and a processor 1900.

[0422] Memory 1920 is used to store computer programs; transceiver 1910 is used to send and receive data under the control of processor 1900; processor 1900 is used to read the computer program in memory 1920 and perform the following operations:

[0423] The first information is determined based on the pattern of the first signal sent by the first network element; or, the first information is determined based on the pattern of the first signal sent by the first network element and the first field of the physical reader to device channel PRDCH.

[0424] The first signal is any one of the following: reader-to-device R2D preamble, R2D time acquisition signal, R2D timing acquisition signal, start indicator component, clock acquisition component;

[0425] The first information includes at least one of the following: R2D chip length, on / off keying OOK chip length, device-to-reader D2R chip length, PRDCH chip length, physical device-to-reader channel PDRCH chip length, R2D chip rate, OOK chip rate, D2R chip rate, PRDCH chip rate, and PDRCH chip rate; the chip rate M is used to indicate the number of chips contained in an Orthogonal Frequency Division Multiplexing (OFDM) symbol.

[0426] As an optional embodiment, the pattern of the first signal is different, and the value of the first information indicated by the pattern of the first signal is different.

[0427] As an optional embodiment, the difference in the patterns of the first signal is determined by the following method:

[0428] The lengths of the first signals are different;

[0429] The first signal uses a different sequence;

[0430] The combination of high and low voltages in the first signal is different.

[0431] As an optional embodiment, the start indication component includes:

[0432] A low voltage lasting for N1 chips and a high voltage lasting for N2 chips; or,

[0433] A high voltage lasting for N1 chips and a low voltage lasting for N2 chips.

[0434] As an optional embodiment, the clock acquisition component uses a Manchester-coded sequence or a pulse interval-coded sequence.

[0435] As an optional embodiment, the total length of the start indication component and the clock acquisition component is 1 OFDM symbol;

[0436] or,

[0437] The total length of the first signal is one OFDM symbol.

[0438] As an optional embodiment, the first field of the PRDCH occupies K bits of the PRDCH, where K is a positive integer;

[0439] or,

[0440] The chip rate corresponding to the first field of the PRDCH is the same as the chip rate corresponding to the clock acquisition component.

[0441] or,

[0442] The chip length corresponding to the first field of the PRDCH is the same as the chip length corresponding to the clock acquisition component.

[0443] As an optional embodiment, the total length of the start indication component and the clock acquisition component is related to the chip rate of the PRDCH or the chip length of the PRDCH.

[0444] As an optional embodiment, the chip length of the clock acquisition component is the same as the chip length of the PRDCH;

[0445] or,

[0446] The chip rate of the clock acquisition component is the same as the chip rate of the PRDCH.

[0447] As an optional embodiment, when the chip rate of PRDCH is less than 16, the last bit of the symbol occupied by the clock acquisition unit is a first fixed value;

[0448] or,

[0449] When the chip rate of PRDCH is greater than or equal to 16, the last n bits of the symbol occupied by the clock acquisition unit are a first fixed value; the duration corresponding to the n bits is greater than or equal to the duration corresponding to the cyclic prefix CP;

[0450] The first fixed value is either 0 or 1.

[0451] As an optional embodiment, when the chip rate of PRDCH is equal to 1, the start indication component occupies 1 / 2 OFDM symbol or 1 OFDM symbol, and the clock acquisition component occupies 3 OFDM symbols, 4 OFDM symbols, 8 OFDM symbols or 16 OFDM symbols;

[0452] or,

[0453] When the chip rate of PRDCH is equal to 2, the start indication unit occupies 1 / 2 OFDM symbol or 1 OFDM symbol, and the clock acquisition unit occupies 2 OFDM symbols, 3 OFDM symbols, 4 OFDM symbols or 8 OFDM symbols;

[0454] or,

[0455] When the chip rate of PRDCH is equal to 4, the start indication unit occupies 1 / 2 OFDM symbol or 1 OFDM symbol, and the clock acquisition unit occupies 1.5 OFDM symbols, 2 OFDM symbols or 4 OFDM symbols;

[0456] or,

[0457] When the chip rate of PRDCH is greater than or equal to 8, the start indication component occupies 1 / 4 OFDM symbol and the clock acquisition component occupies 3 / 4 OFDM symbol;

[0458] or,

[0459] When the chip rate of PRDCH is equal to 8, the start indication unit occupies 1 / 2 OFDM symbol or 1 OFDM symbol, and the clock acquisition unit occupies 1 OFDM symbol or 2 OFDM symbols;

[0460] or,

[0461] When the chip rate of PRDCH is equal to 16, the start indication component occupies 1 / 2 OFDM symbol or 1 OFDM symbol, and the clock acquisition component occupies 1 / 2 OFDM symbol or 1 OFDM symbol.

[0462] In Figure 19, the bus architecture may include any number of interconnected buses and bridges, specifically linking various circuits of one or more processors represented by processor 1900 and memory represented by memory 1920. The bus architecture may also link various other circuits such as peripheral devices, voltage regulators, and power management circuits, which are well known in the art and therefore will not be described further herein. The bus interface provides an interface. Transceiver 1910 may be multiple elements, including transmitters and receivers, providing a unit for communicating with various other devices over transmission media, including wireless channels, wired channels, optical fibers, etc. Processor 1900 is responsible for managing the bus architecture and general processing, and memory 1920 may store data used by processor 1900 during operation.

[0463] The processor 1900 can be a central processing unit (CPU), an application-specific integrated circuit (ASIC), a field-programmable gate array (FPGA), or a complex programmable logic device (CPLD). The processor can also adopt a multi-core architecture.

[0464] In this embodiment, the A-IoT device determines first information by the indication of a pattern of a first signal or by the indication of a pattern of the first signal and a first field of the PRDCH. The first information includes at least one of the following: R2D chip length, OOK chip length of the on / off keying, D2R chip length from device to reader, chip length of the PRDCH, chip length of the physical device to reader channel PDRCH, R2D chip rate, OOK chip rate, D2R chip rate, PRDCH chip rate, and PDRCH chip rate. Using this information indication method, the first network element can indicate transmission parameters such as chip length or chip rate to the A-IoT device, enabling the A-IoT device to receive and decode the PRDCH based on the obtained transmission parameters, thus improving the flexibility of PRDCH transmission parameter configuration and enhancing the transmission spectrum efficiency of the A-IoT system.

[0465] It should be noted that the A-IoT device provided in this disclosure is an A-IoT device capable of executing the above information determination method. Therefore, all embodiments of the above information determination method are applicable to the A-IoT device and can achieve the same or similar beneficial effects, which will not be repeated here.

[0466] As shown in Figure 20, this embodiment of the present disclosure also provides an information indicating device, including:

[0467] The indicating unit 2001 is used to indicate first information to the environmental Internet of Things (A-IoT) device through the pattern of the first signal; or, to indicate the first information to the environmental Internet of Things (A-IoT) device through the pattern of the first signal and the first field of the device channel PRDCH from the physical reader.

[0468] The first signal is any one of the following: reader-to-device R2D preamble, R2D time acquisition signal, R2D timing acquisition signal, start indicator component, clock acquisition component;

[0469] The first information includes at least one of the following: R2D chip length, on / off keying OOK chip length, device-to-reader D2R chip length, PRDCH chip length, physical device-to-reader channel PDRCH chip length, R2D chip rate, OOK chip rate, D2R chip rate, PRDCH chip rate, and PDRCH chip rate; the chip rate M is used to indicate the number of chips contained in an Orthogonal Frequency Division Multiplexing (OFDM) symbol.

[0470] As an optional embodiment, the first network element includes at least one of the following:

[0471] Base station, terminal, reader, intermediate node.

[0472] The specific implementation method of the information indication device provided in this application can be referred to the content described in the relevant method embodiments, and will not be repeated here.

[0473] In this embodiment, the first network element indicates first information to the A-IoT device through a pattern of a first signal or through a pattern of the first signal and a first field of the PRDCH. The first information includes at least one of the following: R2D chip length, on / off keying OOK chip length, device-to-reader D2R chip length, PRDCH chip length, physical device-to-reader channel PDRCH chip length, R2D chip rate, OOK chip rate, D2R chip rate, PRDCH chip rate, and PDRCH chip rate. Using this information indication method, the first network element can indicate transmission parameters such as chip length or chip rate to the A-IoT device, enabling the A-IoT device to receive and decode the PRDCH based on the obtained transmission parameters, thus improving the flexibility of PRDCH transmission parameter configuration and enhancing the transmission spectrum efficiency of the A-IoT system.

[0474] It should be noted that the information indicating device provided in this disclosure is a device capable of executing the above information indicating method. Therefore, all embodiments of the above information indicating method are applicable to this device and can achieve the same or similar beneficial effects, which will not be repeated here.

[0475] As shown in Figure 21, this embodiment of the present disclosure also provides an information determining device, the device comprising:

[0476] The determining unit 2101 is configured to determine first information based on the pattern of the first signal sent by the first network element; or, to determine the first information based on the pattern of the first signal sent by the first network element and the first field of the physical reader to device channel PRDCH.

[0477] The first signal is any one of the following: reader-to-device R2D preamble, R2D time acquisition signal, R2D timing acquisition signal, start indicator component, clock acquisition component;

[0478] The first information includes at least one of the following: R2D chip length, on / off keying OOK chip length, device-to-reader D2R chip length, PRDCH chip length, physical device-to-reader channel PDRCH chip length, R2D chip rate, OOK chip rate, D2R chip rate, PRDCH chip rate, and PDRCH chip rate; the chip rate M is used to indicate the number of chips contained in an Orthogonal Frequency Division Multiplexing (OFDM) symbol.

[0479] The specific implementation methods of the information determination device provided in this application can be found in the descriptions in the relevant method embodiments, and will not be repeated here.

[0480] In this embodiment, the A-IoT device determines first information by the indication of a pattern of a first signal or by the indication of a pattern of the first signal and a first field of the PRDCH. The first information includes at least one of the following: R2D chip length, OOK chip length of the on / off keying, D2R chip length from device to reader, chip length of the PRDCH, chip length of the physical device to reader channel PDRCH, R2D chip rate, OOK chip rate, D2R chip rate, PRDCH chip rate, and PDRCH chip rate. Using this information indication method, the first network element can indicate transmission parameters such as chip length or chip rate to the A-IoT device, enabling the A-IoT device to receive and decode the PRDCH based on the obtained transmission parameters, thus improving the flexibility of PRDCH transmission parameter configuration and enhancing the transmission spectrum efficiency of the A-IoT system.

[0481] It should be noted that the A-IoT device provided in this disclosure is an A-IoT device capable of executing the above information determination method. Therefore, all embodiments of the above information determination method are applicable to the A-IoT device and can achieve the same or similar beneficial effects, which will not be repeated here.

[0482] It should be noted that the division of units in the embodiments of this disclosure is illustrative and only represents one logical functional division. In actual implementation, other division methods may be used. Furthermore, the functional units in the various embodiments of this disclosure can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit. The integrated units described above can be implemented in hardware or as software functional units.

[0483] If the integrated unit is implemented as a software functional unit and sold or used as an independent product, it can be stored in a processor-readable storage medium. Based on this understanding, the technical solution of this disclosure, in essence, or the part that contributes to related technologies, or all or part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) or processor to execute all or part of the steps of the methods described in the various embodiments of this disclosure. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.

[0484] This disclosure also provides a processor-readable storage medium storing a computer program that causes the processor to execute the various processes described in the method embodiments above, achieving the same technical effects. To avoid repetition, these processes will not be repeated here. The processor-readable storage medium can be any available medium or data storage device accessible to the processor, including but not limited to magnetic storage (e.g., floppy disks, hard disks, magnetic tapes, magneto-optical disks (MO), etc.), optical storage (e.g., compact discs (CDs), digital video discs (DVDs), Blu-ray discs (BD), high-definition versatile discs (HVD), etc.), and semiconductor storage (e.g., ROMs, erasable programmable read-only memory (EPROM), electrically erasable programmable read-only memory (EEPROM), non-volatile memory (NAND flash), solid-state drives (SSDs), etc.).

[0485] This disclosure also provides a computer program product, including computer instructions. When the computer instructions are executed by a processor, they implement the various processes in the method embodiments described above and achieve the same technical effects. To avoid repetition, they will not be described again here.

[0486] Those skilled in the art will understand that embodiments of this disclosure can be provided as methods, systems, or computer program products. Therefore, this disclosure can take the form of a completely hardware embodiment, a completely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, this disclosure can take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage and optical storage) containing computer-usable program code.

[0487] This disclosure is described with reference to flowchart illustrations and / or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of this disclosure. It will be understood that each block of the flowchart illustrations and / or block diagrams, and combinations of blocks in the flowchart illustrations and / or block diagrams, can be implemented by computer-executable instructions. These computer-executable instructions can be provided to a processor of a general-purpose computer, special-purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in one or more flowchart illustrations and / or one or more block diagrams.

[0488] These processor-executable instructions may also be stored in a processor-readable memory that can instruct a computer or other programmable data processing device to operate in a particular manner, such that the instructions stored in the processor-readable memory produce an article of manufacture including instruction means that implement the functions specified in one or more flowcharts and / or one or more block diagrams.

[0489] These processor-executable instructions can also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer-implemented process, such that the instructions, which execute on the computer or other programmable apparatus, provide steps for implementing the functions specified in one or more flowcharts and / or one or more block diagrams.

[0490] Furthermore, it should be noted that in the apparatus and method of this disclosure, it is obvious that the components or steps can be decomposed and / or recombined. These decompositions and / or recombinations should be considered equivalent solutions of this disclosure. Moreover, the steps performing the above series of processes can naturally be executed in the order described, but are not necessarily required to be executed in chronological order; some steps can be executed in parallel or independently of each other. Those skilled in the art will understand that all or any step or component of the method and apparatus of this disclosure can be implemented in any computing device (including processors, storage media, etc.) or network of computing devices, in hardware, firmware, software, or a combination thereof, which can be achieved by those skilled in the art using their basic programming skills after reading the description of this disclosure.

[0491] It should be noted that the above division of modules is merely a logical functional division. In actual implementation, they can be fully or partially integrated into a single physical entity, or they can be physically separated. Furthermore, these modules can be implemented entirely in software via processing element calls; they can be fully implemented in hardware; or some modules can be implemented by processing element calls to software, while others are implemented in hardware. For example, a module can be a separate processing element, or it can be integrated into a chip in the aforementioned device. Alternatively, it can be stored as program code in the memory of the aforementioned device, and its function can be called and executed by a processing element of the device. The implementation of other modules is similar. Moreover, these modules can be fully or partially integrated together, or they can be implemented independently. The processing element mentioned here can be an integrated circuit with signal processing capabilities. In the implementation process, each step of the above method or each of the above modules can be completed through integrated logic circuits in the hardware of the processor element or through software instructions.

[0492] For example, each module, unit, subunit, or submodule can be one or more integrated circuits configured to implement the above methods, such as one or more application-specific integrated circuits (ASICs), one or more digital signal processors (DSPs), or one or more field-programmable gate arrays (FPGAs). As another example, when a module is implemented using processing element scheduler code, the processing element can be a general-purpose processor, such as a central processing unit (CPU) or other processor capable of calling program code. Furthermore, these modules can be integrated together to implement a system-on-a-chip (SOC).

[0493] The terms “first,” “second,” etc., used in this disclosure and in the claims are used to distinguish similar objects and are not necessarily used to describe a particular order or sequence. It should be understood that such use of data can be interchanged where appropriate so that embodiments of this disclosure described herein may be implemented, for example, in sequences other than those illustrated or described herein. Furthermore, the terms “comprising” and “having,” and any variations thereof, are intended to cover a non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0494] Obviously, those skilled in the art can make various modifications and variations to this disclosure without departing from its spirit and scope. Therefore, if such modifications and variations fall within the scope of the claims of this disclosure and their equivalents, this disclosure is also intended to include such modifications and variations.

Claims

1. A method for indicating information, the method comprising: a first network element indicating first information to an Ambient Internet of Things (A-IoT) device by a pattern of a first signal; or the first network element indicating the first information to the A-IoT device by the pattern of the first signal and a first field of a Physical Reader-to-Device Channel (PRDCH) ; the first signal being any one of a Reader-to-Device (R2D) preamble, a R2D time acquisition signal, a R2D timing acquisition signal, a start indication component, a clock acquisition component; the first information comprising at least one of a R2D chip length, an On-Off Keying (OOK) chip length, a Device-to-Reader (D2R) chip length, a chip length of the PRDCH, a chip length of a Physical Device-to-Reader Channel (PDRCH), a R2D chip rate, an OOK chip rate, a D2R chip rate, a chip rate of the PRDCH, a chip rate of the PDRCH; the chip rate being used to indicate a number of chips contained in one Orthogonal Frequency Division Multiplexing (OFDM) symbol; the start indication component comprising at least one of a start indication component in the R2D preamble, a start indication component in the R2D time acquisition signal, a start indication component in the R2D timing acquisition signal; and / or, the clock acquisition component comprising at least one of a clock acquisition component in the R2D preamble, a clock acquisition component in the R2D time acquisition signal, a clock acquisition component in the R2D timing acquisition signal; the pattern of the first signal being different, and the first information indicated by the pattern of the first signal being different in value; the pattern of the first signal being determined to be different in the following ways: the length of the first signal being different; the sequence used by the first signal being different; the combination of high voltage and low voltage in the first signal being different; the start indication component comprising: a low voltage with a duration of N1 chips and a high voltage with a duration of N2 chips; or, a high voltage with a duration of N1 chips and a low voltage with a duration of N2 chips; wherein N1 and N2 are positive integers. 6.The method of claim 1, wherein: the sequence used by the clock acquisition component is a Manchester coding sequence or a pulse interval coding sequence. 7.The method of any one of claims 1-6, wherein: the total length of the start indication component and the clock acquisition component is 1 OFDM symbol; or, the total length of the first signal is 1 OFDM symbol. 8.The method of claim 7, wherein: the length of the start indication component is 1 / 4 OFDM symbol, and the length of the clock acquisition component is 3 / 4 OFDM symbol; or, the length of the start indication component is 38 sampling points, and the length of the clock acquisition component is 90 sampling points; wherein the length of 1 OFDM symbol is 128 sampling points; or, the start indication component is composed of a low voltage with a duration of 8 sampling points and a high voltage with a duration of 30 sampling points.

2. The method of claim 1, wherein, 9.The method of claim 1, wherein: the last bit of the symbol occupied by the clock acquisition component is a first fixed value. ​ ​ 3. The method of claim 1, wherein, ​ 4. The method of claim 3, wherein, ​ ​ ​ ​ 5. The method of claim 1, wherein, ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Or, The last n bits of the symbol occupied by the clock acquisition component are a first fixed value; the time length corresponding to the n bits is greater than or equal to the time length corresponding to the cyclic prefix CP. The first fixed value is 0 or 1.

10. The method of claim 1, wherein, The cyclic prefix CP of the OFDM symbol occupied by the first signal satisfies the following characteristics: The CP is a high voltage; Or, The CP is a low voltage; Or, There is no voltage transition edge within the duration of the CP.

11. The method of claim 1, wherein, The first network element indicates first information to the ambient Internet of Things A-IoT device through the pattern of the first signal, including: The chip length of the PRDCH or the chip length of the PDRCH or the chip rate of the PRDCH or the chip rate of the PDRCH is indicated to the A-IoT device through the sequence of the clock acquisition component; Or, the first network element indicates first information to the A-IoT device through the pattern of the first signal and the first field of the PRDCH, including: The chip length or chip rate of the part of the PRDCH other than the first field is indicated to the A-IoT device through the sequence of the clock acquisition component and the first field of the PRDCH; Or, The chip length of the PDRCH or the chip rate of the PDRCH is indicated to the A-IoT device through the sequence of the clock acquisition component and the first field of the PRDCH.

12. The method of claim 11, wherein, The first field of the PRDCH occupies K bits of the PRDCH, K being a positive integer; Or, The chip rate corresponding to the first field of the PRDCH is the same as the chip rate corresponding to the clock acquisition component; Or, The chip length corresponding to the first field of the PRDCH is the same as the chip length corresponding to the clock acquisition component.

13. The method of any one of claims 1-6, wherein, The total length of the start indication component and the clock acquisition component is related to the chip rate of the PRDCH or the chip length of the PRDCH.

14. The method of claim 1, wherein, The first network element indicates first information to the ambient Internet of Things A-IoT device through the pattern of the first signal, including: The chip rate of the PRDCH or the chip length of the PRDCH is indicated to the A-IoT device through the length and / or pattern of the clock acquisition component; Or, The chip rate of the PDRCH or the chip length of the PDRCH is indicated to the A-IoT device through the length and / or pattern of the clock acquisition component.

15. The method of claim 1, wherein, The chip length of the clock acquisition component is the same as the chip length of the PRDCH; Or, The chip rate of the clock acquisition component is the same as the chip rate of the PRDCH.

16. The method of claim 1, wherein, In the case where the chip rate of the PRDCH is less than 16, the last bit of the symbol occupied by the clock acquisition component is a first fixed value; Or, In the case where the chip rate of the PRDCH is greater than or equal to 16, the last n bits of the symbol occupied by the clock acquisition component are a first fixed value; the time length corresponding to the n bits is greater than or equal to the time length corresponding to the cyclic prefix CP. The first fixed value is 0 or 1.

17. The method of claim 1, wherein, in case that the chip rate of the PRDCH is equal to 1, the start indication component occupies 1 / 2 OFDM symbol or 1 OFDM symbol, and the clock acquisition component occupies 3 OFDM symbols, 4 OFDM symbols, 8 OFDM symbols or 16 OFDM symbols; or, in case that the chip rate of the PRDCH is equal to 2, the start indication component occupies 1 / 2 OFDM symbol or 1 OFDM symbol, and the clock acquisition component occupies 2 OFDM symbols, 3 OFDM symbols, 4 OFDM symbols or 8 OFDM symbols; or, in case that the chip rate of the PRDCH is equal to 4, the start indication component occupies 1 / 2 OFDM symbol or 1 OFDM symbol, and the clock acquisition component occupies 1.5 OFDM symbols, 2 OFDM symbols or 4 OFDM symbols; or, in case that the chip rate of the PRDCH is greater than or equal to 8, the start indication component occupies 1 / 4 OFDM symbol, and the clock acquisition component occupies 3 / 4 OFDM symbol; or, in case that the chip rate of the PRDCH is equal to 8, the start indication component occupies 1 / 2 OFDM symbol or 1 OFDM symbol, and the clock acquisition component occupies 1 OFDM symbol or 2 OFDM symbols; or, in case that the chip rate of the PRDCH is equal to 16, the start indication component occupies 1 / 2 OFDM symbol or 1 OFDM symbol, and the clock acquisition component occupies 1 / 2 OFDM symbol or 1 OFDM symbol.

18. The method of claim 1, wherein, The first network element comprises at least one of: a base station, a terminal, a reader, an intermediate node.

19. An information determination method, comprising: an ambient Internet of Things (A-IoT) device determining first information according to a pattern of a first signal transmitted by a first network element; or, the A-IoT device determining the first information according to the pattern of the first signal transmitted by the first network element and a first field of a physical reader-to-device channel (PRDCH); the first signal is any one of a reader-to-device (R2D) preamble, an R2D time acquisition signal, an R2D timing acquisition signal, a start indication component, and a clock acquisition component; the first information comprises at least one of an R2D chip length, an on-off keying (OOK) chip length, a device-to-reader (D2R) chip length, a chip length of the PRDCH, a chip length of a physical device-to-reader channel (PDRCH), an R2D chip rate, an OOK chip rate, a D2R chip rate, a chip rate of the PRDCH, and a chip rate of the PDRCH; the chip rate M is used to indicate a number of chips contained in one orthogonal frequency division multiplexing (OFDM) symbol.

20. A first network element, comprising a memory, a transceiver, and a processor: the memory is configured to store a computer program; the transceiver is configured to transceive data under control of the processor; and the processor is configured to read the computer program in the memory and perform the following operations: indicate the first information to the A-IoT device through a pattern of the first signal; or, indicate the first information to the A-IoT device through a pattern of the first signal and a first field of a physical reader-to-device channel (PRDCH); the first signal is any one of a reader-to-device (R2D) preamble, a R2D time acquisition signal, a R2D timing acquisition signal, a start indication component, a clock acquisition component; the first information includes at least one of a R2D chip length, an on-off keying (OOK) chip length, a device-to-reader (D2R) chip length, a chip length of the PRDCH, a chip length of a physical device-to-reader channel (PDRCH), a R2D chip rate, an OOK chip rate, a D2R chip rate, a chip rate of the PRDCH, a chip rate of the PDRCH; the chip rate M is used to indicate a number of chips contained in one orthogonal frequency division multiplexing (OFDM) symbol.

21. The first network element of claim 20, wherein, the start indication component includes at least one of a start indication component in the R2D preamble, a start indication component in the R2D time acquisition signal, a start indication component in the R2D timing acquisition signal; and / or, the clock acquisition component includes at least one of a clock acquisition component in the R2D preamble, a clock acquisition component in the R2D time acquisition signal, a clock acquisition component in the R2D timing acquisition signal.

22. The first network element of claim 20, wherein, the first signal has a different pattern, and the first information indicated by the first signal has a different value.

23. The first network element of claim 22, wherein, the first signal has a different pattern in the following ways: the first signal has a different length; the first signal uses a different sequence; a combination of high voltage and low voltage in the first signal is different.

24. The first network element of claim 20, wherein, the start indication component includes: a low voltage with a duration of N1 chips and a high voltage with a duration of N2 chips; or, a high voltage with a duration of N1 chips and a low voltage with a duration of N2 chips; wherein N1 and N2 are positive integers.

25. The first network element of claim 20, wherein, the clock acquisition component uses a sequence that is a Manchester coding sequence or a pulse interval coding sequence.

26. The first network element of any one of claims 20-25, wherein, a total length of the start indication component and the clock acquisition component is 1 OFDM symbol; or, a total length of the first signal is 1 OFDM symbol.

27. The first network element of claim 26, wherein, a length of the start indication component is 1 / 4 OFDM symbol, and a length of the clock acquisition component is 3 / 4 OFDM symbol; or, a length of the start indication component is 38 sampling points, and a length of the clock acquisition component is 90 sampling points; wherein a length of 1 OFDM symbol is 128 sampling points; or, the start indication component is composed of a low voltage with a duration of 8 sampling points and a high voltage with a duration of 30 sampling points.

28. The first network element of claim 20, wherein, a last bit of the clock acquisition component occupies a first fixed value; or, a last n bits of the clock acquisition component occupies a first fixed value; the n bits correspond to a time duration greater than or equal to a time duration corresponding to a cyclic prefix (CP). The first fixed value is 0 or 1.

29. The first network element of claim 20, wherein, A cyclic prefix (CP) of an OFDM symbol occupied by the first signal satisfies the following characteristics: The CP is a high voltage; or, The CP is a low voltage; or, There is no voltage transition edge within a duration of the CP.

30. The first network element of claim 20, wherein, The processor is further configured to read the computer program in the memory and perform the following operations: indicate, to the A-IoT device, a chip length of the PRDCH, or a chip length of the PDRCH, or a chip rate of the PRDCH, or a chip rate of the PDRCH, through the sequence of the clock acquisition component; or, indicate, to the A-IoT device, a chip length or a chip rate of a part of the PRDCH other than the first field, through the sequence of the clock acquisition component and the first field of the PRDCH; or, indicate, to the A-IoT device, a chip length of the PDRCH or a chip length of the PDRCH, through the sequence of the clock acquisition component and the first field of the PRDCH.

31. The first network element of claim 30, wherein, the first field of the PRDCH occupies K bits of the PRDCH, K being a positive integer; or, a chip rate corresponding to the first field of the PRDCH is the same as a chip rate corresponding to the clock acquisition component; or, a chip length corresponding to the first field of the PRDCH is the same as a chip length corresponding to the clock acquisition component.

32. The first network element of any one of claims 20-25, wherein, a total length of the start indication component and the clock acquisition component is related to a chip rate of the PRDCH or a chip length of the PRDCH.

33. The first network element of claim 20, wherein, The processor is further configured to read the computer program in the memory and perform the following operations: indicate, to the A-IoT device, a chip rate of the PRDCH or a chip length of the PRDCH, through the length and / or pattern of the clock acquisition component; or, indicate, to the A-IoT device, a chip rate of the PDRCH or a chip length of the PDRCH, through the length and / or pattern of the clock acquisition component.

34. The first network element of claim 20, wherein, a chip length of the clock acquisition component is the same as a chip length of the PRDCH; or, a chip rate of the clock acquisition component is the same as a chip rate of the PRDCH.

35. The first network element of claim 20, wherein, in a case where a chip rate of the PRDCH is less than 16, a last bit of the clock acquisition component occupies a first fixed value; or, in a case where a chip rate of the PRDCH is greater than or equal to 16, a last n bits of the clock acquisition component occupies a first fixed value; the n bits correspond to a time duration greater than or equal to a time duration corresponding to a cyclic prefix (CP). The first fixed value is 0 or 1.

36. The first network element of claim 20, wherein, in a case where the chip rate of the PRDCH is equal to 1, the start indication component occupies 1 / 2 OFDM symbol or 1 OFDM symbol, and the clock acquisition component occupies 3 OFDM symbols, 4 OFDM symbols, 8 OFDM symbols, or 16 OFDM symbols; or, in a case where the chip rate of the PRDCH is equal to 2, the start indication component occupies 1 / 2 OFDM symbol or 1 OFDM symbol, and the clock acquisition component occupies 2 OFDM symbols, 3 OFDM symbols, 4 OFDM symbols, or 8 OFDM symbols; or, in a case where the chip rate of the PRDCH is equal to 4, the start indication component occupies 1 / 2 OFDM symbol or 1 OFDM symbol, and the clock acquisition component occupies 1.5 OFDM symbols, 2 OFDM symbols, or 4 OFDM symbols; or, in a case where the chip rate of the PRDCH is greater than or equal to 8, the start indication component occupies 1 / 4 OFDM symbol, and the clock acquisition component occupies 3 / 4 OFDM symbol; or, in a case where the chip rate of the PRDCH is equal to 8, the start indication component occupies 1 / 2 OFDM symbol or 1 OFDM symbol, and the clock acquisition component occupies 1 OFDM symbol or 2 OFDM symbols; or, in a case where the chip rate of the PRDCH is equal to 16, the start indication component occupies 1 / 2 OFDM symbol or 1 OFDM symbol, and the clock acquisition component occupies 1 / 2 OFDM symbol or 1 OFDM symbol.

37. An ambient Internet of Things (A-IoT) device, comprising a memory, a transceiver, and a processor: the memory is configured to store a computer program; the transceiver is configured to transceive data under control of the processor; and the processor is configured to read the computer program in the memory and perform the following operations: determining first information according to a pattern of a first signal transmitted by a first network element; or determining first information according to a pattern of the first signal and a first field of a Physical Reader-to-Device Channel (PRDCH) transmitted by the first network element; the first signal is any one of a Reader-to-Device (R2D) preamble, an R2D time acquisition signal, an R2D timing acquisition signal, a start indication component, and a clock acquisition component; the first information comprises at least one of an R2D chip length, an On-Off Keying (OOK) chip length, a Device-to-Reader (D2R) chip length, a chip length of the PRDCH, a chip length of a Physical Device-to-Reader Channel (PDRCH), an R2D chip rate, an OOK chip rate, a D2R chip rate, a chip rate of the PRDCH, and a chip rate of the PDRCH; and the chip rate M is used to indicate a number of chips contained in one Orthogonal Frequency Division Multiplexing (OFDM) symbol.

38. An information indication apparatus, comprising: an indication unit configured to indicate first information to an Ambient Internet of Things (A-IoT) device through a pattern of a first signal. Or, the first information is indicated to the A-IoT device through a pattern of the first signal and a first field of a physical reader-to-device channel PRDCH; The first signal is any one of the following signals: a reader-to-device R2D preamble, a R2D time acquisition signal, a R2D timing acquisition signal, a start indication component, a clock acquisition component; The first information includes at least one of the following information: a R2D chip length, an on-off keying OOK chip length, a device-to-reader D2R chip length, a chip length of the PRDCH, a chip length of a physical device-to-reader channel PDRCH, a R2D chip rate, an OOK chip rate, a D2R chip rate, a chip rate of the PRDCH, a chip rate of the PDRCH; the chip rate M is used to indicate a number of chips contained in one orthogonal frequency division multiplexing OFDM symbol.

39. An information determining apparatus, the apparatus comprising: a determining unit configured to determine first information according to a pattern of a first signal transmitted by a first network element; Or, determine the first information according to a pattern of the first signal transmitted by the first network element and a first field of a physical reader-to-device channel PRDCH; The first signal is any one of the following signals: a reader-to-device R2D preamble, a R2D time acquisition signal, a R2D timing acquisition signal, a start indication component, a clock acquisition component; The first information includes at least one of the following information: a R2D chip length, an on-off keying OOK chip length, a device-to-reader D2R chip length, a chip length of the PRDCH, a chip length of a physical device-to-reader channel PDRCH, a R2D chip rate, an OOK chip rate, a D2R chip rate, a chip rate of the PRDCH, a chip rate of the PDRCH; the chip rate M is used to indicate a number of chips contained in one orthogonal frequency division multiplexing OFDM symbol.

40. A processor-readable storage medium, the processor-readable storage medium storing a program for causing the processor to execute the method of any one of claims 1 to 18, or the program for causing the processor to execute the method of any one of claim 19.

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