Method and apparatus for node used for internet of things communication in wireless communication

Abstract

The present application discloses a method and apparatus for a node used for Internet of Things communication in wireless communication. A node sends a first PRDCH, wherein the first PRDCH uses OOK, the first PRDCH comprises L1 control information, candidate formats of the L1 control information comprised in the first PRDCH at least include a first format and a second format, the first format and the second format are respectively for device types of different receivers of the first PRDCH, the number of control information bits comprised in the first format and the number of control information bits comprised in the second format are different, and only L1 control information of the second format in both the first format and the second format comprises device type information. The present application improves the flexibility of scheduling and reduces the complexity of implementation.

Description

A method and apparatus for use in nodes for Internet of Things (IoT) communication in wireless communication.

[0001] This application claims priority to Chinese Patent Application No. 202411563472.8, filed on November 1, 2024, entitled "A Method and Apparatus for IoT Communication in Wireless Communication", the entire contents of which are incorporated herein by reference. Technical Field

[0002] This application relates to transmission methods and apparatus in wireless communication systems, and more particularly to schemes and apparatus for control information formats of signals in wireless communication. Background Technology

[0003] The application scenarios of future wireless communication systems are becoming increasingly diversified, and different application scenarios place different performance requirements on the system. To meet the diverse performance needs of various application scenarios, research on New Radio (NR) (or 5G) was initiated at the 3GPP (3rd Generation Partner Project) RAN (Radio Access Network) #72 plenary meeting. With the widespread application of 5G, new business models and application scenarios are constantly emerging, such as the Ambient Internet of Things (IoT). Existing 5G standards cannot fully meet these new demands; therefore, 3GPP is preparing to begin related preliminary research. Summary of the Invention

[0004] The 5G NR system initiated research on Ambient Internet of Things (A-IoT) in Rel-19. In this A-IoT environment, OOK (Optical Keyless Access) is expected to be used for transmission between readers and IoT devices, and between IoT devices and readers. This research is still in its early stages. The applicant anticipates that A-IoT will also become an important component of future 6G networks. Furthermore, the applicant's research has revealed that the format of control information carried by signal transmissions in A-IoT requires new design considerations for different types of IoT devices.

[0005] This application discloses a solution to the problem of control information format in environmental IoT. It should be noted that the description in this application only uses reader-to-IoT device transmission as a typical application scenario or example; this application is also applicable to 6G networks or other scenarios facing similar problems in the future (e.g., scenarios requiring consideration of control information format, or scenarios requiring consideration of IoT device types, such as scenarios supporting energy saving, or scenarios supporting user-to-user device transmission, or for different application scenarios, such as eMBB, URLLC, full-duplex networks, non-terrestrial networks, sensor-integrated networks, smart metasurfaces, terahertz networks, V2X can also achieve similar technical effects). Furthermore, using a unified solution for different scenarios (including but not limited to eMBB, URLLC, energy saving, IoT, full-duplex networks, non-terrestrial networks, sensor-integrated networks, smart metasurfaces, terahertz networks, V2X scenarios) or different application parameters helps reduce hardware complexity and cost. Where there is no conflict, the embodiments and features in the embodiments used in the terminal of this application can be applied to the devices used in the IoT devices or base stations of this application, and vice versa.

[0006] This application discloses a method for use in a terminal, including:

[0007] Send the first PRDCH, which uses OOK;

[0008] The first PRDCH includes L1 control information. The candidate formats of the L1 control information included in the first PRDCH include at least a first format and a second format. The first format and the second format are respectively for different device types of the receivers of the first PRDCH. The number of control information bits included in the first format and the number of control information bits included in the second format are different. Only the L1 control information of the second format includes device type information.

[0009] As an example, considering that different types of IoT devices have different hardware structures and device complexities, different L1 (Layer 1) control information formats are set for different types of IoT devices. A simpler L1 control information format is set for IoT devices with lower complexity, and a more complex L1 control information format is set for IoT devices with higher complexity. This is more flexible, reduces the complexity of implementation, maximizes the use of device performance, and improves the robustness of the system.

[0010] According to one aspect of this application, the above method is characterized in that the device type includes at least one of type 1, type 2a and type 2b, wherein the IoT device of type 1 monitors the number of control information bits corresponding to the first format, and at least one of the IoT devices of type 2a or type 2b monitors the number of control information bits corresponding to the first format and the number of control information bits corresponding to the second format.

[0011] According to one aspect of this application, the method is characterized in that the L1 control information included in the first PRDCH adopts the second format, and a field included in the L1 control information included in the first PRDCH indicates a transmission mode, the transmission mode including at least one of unicast, multicast or broadcast; when the transmission mode is indicated as multicast, at least one field included in the L1 control information included in the first PRDCH indicates a group identifier for multicast.

[0012] According to one aspect of this application, the method is characterized in that the L1 control information included in the first PRDCH adopts the first format, and at least one MAC layer field carried by the first PRDCH indicates the device type of the receiver of the first PRDCH.

[0013] According to one aspect of this application, the above method is characterized by comprising:

[0014] Receive the first PDRCH;

[0015] Wherein, when the L1 control information included in the first PRDCH adopts the first format, a field of the MAC layer included in the first PRDCH indicates the number of chips occupied by the first PDRCH; when the L1 control information included in the first PRDCH adopts the second format, a field of the L1 control information included in the first PRDCH indicates the number of chips occupied by the first PDRCH, wherein the chips include at least one of OOK time units and BPSK time units.

[0016] According to one aspect of this application, the above method is characterized in that the first PRDCH includes a data sub-signal and a control sub-signal, the control sub-signal carries L1 control information, the data sub-signal carries data information bits, the time-domain interval length between the control sub-signal and the data sub-signal is equal to or not less than the minimum number of OFDM symbols of a first time interval, and the first time interval is equal to an absolute time or equal to a plurality of OOK time units.

[0017] According to one aspect of this application, the method is characterized in that the target power value is equal to the transmit power value of the first PRDCH, the target power value being equal to the smaller of a first upper limit value and a first power value; at least one of the first upper limit value or the first power value depends on the number of OOK time units included in one OFDM symbol occupied by the first PRDCH in the time domain.

[0018] This application discloses a terminal, the terminal comprising:

[0019] One or more processors and memory;

[0020] The memory is coupled to the one or more processors and is used to store computer program code, which includes computer instructions. The one or more processors invoke the computer instructions to cause the terminal to execute the above-described method.

[0021] This application discloses a method for use in Internet of Things (IoT) devices, comprising:

[0022] Receive the first PRDCH, which uses OOK;

[0023] The first PRDCH includes L1 control information. The candidate formats of the L1 control information included in the first PRDCH include at least a first format and a second format. The first format and the second format are respectively for different device types of the IoT devices. The number of control information bits included in the first format and the number of control information bits included in the second format are different. Only the L1 control information of the second format includes device type information.

[0024] According to one aspect of this application, the above method is characterized in that the device type includes at least one of type 1, type 2a and type 2b, wherein the IoT device of type 1 monitors the number of control information bits corresponding to the first format, and at least one of the IoT device of type 2a or the IoT device of type 2b monitors the number of control information bits corresponding to the first format and the number of control information bits corresponding to the second format.

[0025] According to one aspect of this application, the method is characterized in that the L1 control information included in the first PRDCH adopts the second format, and a field included in the L1 control information included in the first PRDCH indicates a transmission mode, the transmission mode including at least one of unicast, multicast or broadcast; when the transmission mode is indicated as multicast, at least one field included in the L1 control information included in the first PRDCH indicates a group identifier for multicast.

[0026] According to one aspect of this application, the above method is characterized in that the L1 control information included in the first PRDCH adopts the first format, and at least one MAC layer field carried by the first PRDCH indicates the device type of the Internet of Things device.

[0027] According to one aspect of this application, the above method is characterized by comprising:

[0028] Send the first PDRCH;

[0029] Wherein, when the L1 control information included in the first PRDCH adopts the first format, a field of the MAC layer included in the first PRDCH indicates the number of chips occupied by the first PDRCH; when the L1 control information included in the first PRDCH adopts the second format, a field of the L1 control information included in the first PRDCH indicates the number of chips occupied by the first PDRCH, wherein the chips include at least one of OOK time units and BPSK time units.

[0030] According to one aspect of this application, the above method is characterized in that the first PRDCH includes a data sub-signal and a control sub-signal, the control sub-signal carries L1 control information, the data sub-signal carries data information bits, the time-domain interval length between the control sub-signal and the data sub-signal is equal to or not less than the minimum number of OFDM symbols of a first time interval, and the first time interval is equal to an absolute time or equal to a plurality of OOK time units.

[0031] According to one aspect of this application, the method is characterized in that the target power value is equal to the transmit power value of the first PRDCH, the target power value being equal to the smaller of a first upper limit value and a first power value; at least one of the first upper limit value or the first power value depends on the number of OOK time units included in one OFDM symbol occupied by the first PRDCH in the time domain.

[0032] This application discloses an Internet of Things (IoT) device, which includes: one or more processors and memory;

[0033] The memory is coupled to the one or more processors and is used to store computer program code, which includes computer instructions. The one or more processors invoke the computer instructions to cause the terminal to execute the above-described method.

[0034] As an example, compared with conventional solutions, this application has the following advantages:

[0035] Reduced the complexity of equipment processing;

[0036] Improved transmission performance;

[0037] This improves transmission reliability and enhances system robustness. Attached Figure Description

[0038] Other features, objects, and advantages of this application will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0039] Figure 1 illustrates a flowchart of terminal transmission according to an embodiment of this application;

[0040] Figure 2 shows a schematic diagram of a network architecture according to an embodiment of this application;

[0041] Figure 3 illustrates a schematic diagram of the wireless protocol architecture of the user plane and control plane according to an embodiment of this application;

[0042] Figure 4 shows a schematic diagram of a terminal and an Internet of Things device according to an embodiment of this application;

[0043] Figure 5 illustrates a flowchart of transmission between a terminal and an IoT device according to an embodiment of this application;

[0044] Figure 6 illustrates a schematic diagram of the number of monitoring and control information bits for different device types according to an embodiment of this application;

[0045] Figure 7 shows a schematic diagram of the L1 control information indication transmission mode included in the first PRDCH according to an embodiment of this application;

[0046] Figure 8 shows a schematic diagram of the device type indicating the recipient of the first PRDCH according to an embodiment of this application;

[0047] Figure 9 shows a schematic diagram of the relationship between the first PRDCH and the first PDRCH according to an embodiment of this application;

[0048] Figure 10 shows a schematic diagram of the relationship between control sub-signals and data sub-signals according to an embodiment of this application;

[0049] Figure 11 shows a schematic diagram of a target power value according to an embodiment of this application;

[0050] Figure 12 shows a structural block diagram of a processing device for a terminal according to an embodiment of the present application;

[0051] Figure 13 shows a structural block diagram of a processing apparatus for an Internet of Things device according to an embodiment of the present application;

[0052] Figure 14 shows a schematic diagram of the structure of an A-IoT device according to an embodiment of this application. Detailed Implementation

[0053] The technical solution of this application will be further described in detail below with reference to the accompanying drawings. It should be noted that, unless otherwise specified, the embodiments and features in the embodiments of this application can be arbitrarily combined with each other.

[0054] Example 1

[0055] Example 1 illustrates a flowchart 100 of terminal transmission according to an embodiment of this application, as shown in FIG1. ​​In FIG1, each box represents a step, and it is particularly important to emphasize that the order of the boxes in the figure does not restrict the temporal sequence of the steps represented.

[0056] In Embodiment 1, the terminal in this application sends a first PRDCH in step 101. The first PRDCH uses OOK. The first PRDCH includes L1 control information. The candidate formats of the L1 control information included in the first PRDCH include at least a first format and a second format. The first format and the second format are respectively for different device types of the receivers of the first PRDCH. The number of control information bits included in the first format and the number of control information bits included in the second format are different. Of the first format and the second format, only the L1 control information of the second format includes device type information.

[0057] As an example, the recipient of the first PRDCH is the Internet of Things (IoT) device described in this application.

[0058] As an example, the recipient of the first PRDCH is an RFID (Radio Frequency Identification) device.

[0059] As an example, the recipient of the first PRDCH is an ambient IoT device.

[0060] As an example, the first PRDCH is a baseband signal or radio frequency signal of PRDCH (Physical Reader to Device Channel).

[0061] As one example, the first PRDCH is transmitted over a physical channel from the reader to the IoT device.

[0062] As an example, the first PRDCH carries physical layer control information.

[0063] As an example, the first PRDCH carries physical layer control information and higher layer control information.

[0064] As an example, the first PRDCH includes a preamble.

[0065] As an example, the first PRDCH does not include a preamble.

[0066] As an example, the first PRDCH carries all or part of the bits in a TB (transport block).

[0067] As an example, all or part of the bits in a TB are used to generate the first PRDCH.

[0068] As one example, "the first PRDCH adopts OOK" includes: the first PRDCH is a signal that only includes high and low levels.

[0069] As an example, "the first PRDCH uses OOK" includes: the modulation scheme of the first PRDCH includes OOK.

[0070] As an example, "the first PRDCH uses OOK" includes: the generation process of the first PRDCH includes OOK.

[0071] As an example, "the first PRDCH uses OOK" includes: the encoding method of the first PRDCH includes OOK.

[0072] As an example, "the first PRDCH uses OOK" includes: OOK is used in the waveform of the first PRDCH.

[0073] As an example, "the first PRDCH adopts OOK" includes: the input sequence for the transform precoding of the first PRDCH is a bit sequence.

[0074] As an example, "the first PRDCH adopts OOK" includes: the input sequence of the transform precoding for the first PRDCH is not a complex numerical sequence.

[0075] As an example, "the first PRDCH adopts OOK" includes: the input sequence for transform precoding of the first PRDCH is an On / Off sequence.

[0076] As an example, "the first PRDCH adopts OOK" includes: the input sequence for the transform precoding of the first PRDCH is a high-low level sequence.

[0077] As an example, the input sequence for the transform precoding of the first PRDCH is a linearly encoded bit sequence.

[0078] As an example, the input sequence for the transform precoding of the first PRDCH is a Manchester-coded bit sequence.

[0079] As an example, the transform precoding for the first PRDCH includes DFT (Discrete Fourier Transform).

[0080] As an example, the transform precoding for the first PRDCH includes FFT (Fast Fourier Transform).

[0081] As an example, the number of RBs (resource blocks) occupied by the first PRDCH in the frequency domain is equal to... Where α2, α3, and α5 are all non-negative integers.

[0082] As an example, the first PRDCH is a high / low level signal or an On / Off signal.

[0083] As an example, the first PRDCH is generated by at least one of the following: CRC (Cyclic Redundancy Check) attachment, line coding, and OFDM-based OOK generation.

[0084] As an example, the L1 control information included in the first PRDCH is physical layer control information.

[0085] As an example, the L1 control information included in the first PRDCH is RDCI (Reader to Device Control Information).

[0086] As an example, the number of L1 control information bits included in the first PRDCH is a positive integer.

[0087] As an example, the number of L1 control information bits included in the first PRDCH is per L1 control information format.

[0088] As an example, the time-domain resources mapped by the L1 control information bits included in the first PRDCH are earlier than the time-domain resources mapped by the data information bits included in the first PRDCH.

[0089] As an example, the L1 control information included in the first PRDCH includes the scheduling information of the first PRDCH.

[0090] As an example, the L1 control information included in the first PRDCH indicates the duration of the first PRDCH.

[0091] As an example, the L1 control information included in the first PRDCH indicates the data information bits included in the first PRDCH.

[0092] As an example, the L1 control information included in the first PRDCH indicates at least one of the following: the number of OOK time units included in the OFDM symbol carrying the TB or the length of each OOK time unit included.

[0093] As an example, the L1 control information included in the first PRDCH indicates the size of the TB carried by the first PRDCH.

[0094] As an example, the time-domain resources mapped by the L1 control information included in the first PRDCH and the data information included in the first PRDCH are orthogonal in the time domain.

[0095] As one embodiment, the L1 control information included in the first PRDCH and the data information included in the first PRDCH are continuous in the time domain. As a supplementary embodiment, this approach has the advantage of reducing latency.

[0096] As one embodiment, the L1 control information included in the first PRDCH and the data information included in the first PRDCH are discontinuous in the time domain. As a supplementary embodiment, this approach allows the device sufficient processing time and reduces implementation complexity.

[0097] As an example, the L1 control information included in the first PRDCH is independently attached to the CRC along with the TB carried by the first PRDCH.

[0098] As an example, the L1 control information included in the first PRDCH and the TB carried by the first PRDCH together generate a CRC.

[0099] As one embodiment, "the first PRDCH includes L1 control information" includes: the first PRDCH includes physical layer control information.

[0100] As one embodiment, "the first PRDCH includes L1 control information" means that the first PRDCH carries L1 (layer 1) control information.

[0101] As one embodiment, "the first PRDCH includes L1 control information" includes: the first PRDCH includes L1 (layer 1) control information in at least one format.

[0102] As one embodiment, "the first PRDCH includes L1 control information" includes: the first PRDCH includes at least one L1 (layer 1) control information bit.

[0103] As one embodiment, "the first PRDCH includes L1 control information" includes: the first PRDCH includes a plurality of L1 (layer 1) control information bits.

[0104] As one embodiment, "the first PRDCH includes L1 control information" includes: at least one L1 control information bit is used to generate the first PRDCH.

[0105] As one embodiment, "the first PRDCH includes L1 control information" includes: at least one L1 control information bit is mapped to the first PRDCH.

[0106] As one embodiment, "the first PRDCH includes L1 control information" includes: at least one L1 control information bit is mapped to the first PRDCH.

[0107] As one embodiment, "the first PRDCH includes L1 control information" includes: at least one L1 control information bit is mapped to the time domain resources occupied by the first PRDCH.

[0108] As one embodiment, "the first PRDCH includes L1 control information" includes: the first PRDCH carries RDCI.

[0109] As one embodiment, "the candidate formats of the L1 control information included in the first PRDCH include at least the first format and the second format" means that the candidate formats of the L1 control information included in the first PRDCH include only the first format and the second format.

[0110] As an example, "the candidate formats of the L1 control information included in the first PRDCH include at least a first format and a second format" means that the first format and the second format are candidate formats of the L1 control information included in the first PRDCH.

[0111] As one embodiment, "the candidate formats of the L1 control information included in the first PRDCH include at least a first format and a second format" includes: the L1 control information included in the first PRDCH is either the first format or the second format.

[0112] As an example, "the candidate formats of the L1 control information included in the first PRDCH include at least a first format and a second format" means that the candidate formats of the L1 control information included in the first PRDCH include multiple formats, and the first format and the second format are two of them.

[0113] As one embodiment, "the candidate formats of the L1 control information included in the first PRDCH include at least a first format and a second format" includes: the candidate formats of the L1 control information included in the first PRDCH also include other formats besides the first format and the second format.

[0114] As an example, the candidate format of the L1 control information included in the first PRDCH is the format that the L1 control information included in the first PRDCH may adopt.

[0115] As an example, the candidate format of the L1 control information included in the first PRDCH is the possible definition and order of all fields in the L1 control information included in the first PRDCH.

[0116] As an example, the first format is an RDCI format.

[0117] As an example, the first format is the basic L1 control information format.

[0118] As an example, the first format is the L1 control information format for fallback.

[0119] As an example, the first format is the L1 control information format for IoT device 1 as defined in 3GPP TR38.769.

[0120] As one embodiment, the L1 control information in the first format includes only the scheduling information of the first PRDCH. As a supplementary embodiment, this approach has the advantage of saving overhead.

[0121] As an example, the first format is applicable to all device types of the IoT devices described in this application.

[0122] As an example, the IoT device 1 as defined in 3GPP TR38.769 at least supports monitoring the L1 control information size of the first format.

[0123] As an example, the receiver of the first PRDCH at least supports monitoring L1 control information of the first format.

[0124] As an example, the receiver of the first PRDCH at least supports monitoring the size of the L1 control information of the first format.

[0125] As an example, the second format is an RDCI format.

[0126] As an example, the second format is an enhanced L1 control information format.

[0127] As an example, the second format is the L1 control information format for IoT device 2a as defined in 3GPP TR38.769.

[0128] As an example, the second format is the L1 control information format for IoT device 2b as defined in 3GPP TR38.769.

[0129] As an example, the second format is for IoT device C as defined in 3GPP TR38.848.

[0130] As an example, only some of the IoT devices described in this application support the L1 control information in the second format.

[0131] As an example, IoT device 1 as defined in GPP TR38.769 cannot decode L1 control information in the second format.

[0132] As an example, IoT device 1 as defined in GPP TR38.769 cannot monitor the size of L1 control information in the second format.

[0133] As an example, the L1 control information in the second format includes all the fields included in the L1 control information in the first format.

[0134] As an example, the domains included in the L1 control information of the first format are a subset of the domains included in the L1 control information of the second format.

[0135] As an example, if the number of L1 control information bits in the first format or the second format is less than X, padding bits are added until the payload size is equal to X, where X is a positive integer.

[0136] As an example, when the number of L1 control information bits in the first format is equal to the number of L1 control information bits in the second format, at least one padding bit is added to the L1 control information bits in the second format so that the number of L1 control information bits in the second format is greater than the number of L1 control information bits in the first format.

[0137] As a sub-example of this embodiment, the padding bits can be data information bits.

[0138] As a sub-example of this embodiment, the padding bits can be repetitions of L1 control information bits.

[0139] As an example, the receiver of the first PRDCH can only decode L1 control information in a format corresponding to the device type of the receiver of the first PRDCH.

[0140] As an example, the receiver of the PRDCH of IoT device 1 as defined in 3GPP TR38.769 can only decode L1 control information in the format corresponding to type 1.

[0141] As an example, the receiver of the PRDCH of IoT device 1 as defined in 3GPP TR38.769 can only decode L1 control information in the first format.

[0142] As one embodiment, "the first format and the second format are respectively for different device types of the receiver of the first PRDCH" includes: the first format is for the device type of the receiver of the first PRDCH with lower device complexity, and the second format is for the device type of the receiver of the first PRDCH with higher device complexity.

[0143] As one embodiment, "the first format and the second format are respectively for different device types of the receivers of the first PRDCH" includes: the first format is for device types of the receivers of the first PRDCH with lower device capabilities, and the second format is for device types of the receivers of the first PRDCH with higher device capabilities.

[0144] As one embodiment, "the first format and the second format are respectively for different device types of receivers of the first PRDCH" includes: the first format is for device types of receivers of the first PRDCH whose uplink transmission is backscattering, and the second format is for device types of receivers of the first PRDCH whose uplink transmission is generated internally by the device.

[0145] As one embodiment, "the first format and the second format are respectively for different device types of the recipient of the first PRDCH" includes: the first format is for IoT device 1 as defined in 3GPP TR38.769, and the second format is for at least one of IoT devices 2a or 2b as defined in 3GPP TR38.769.

[0146] As one embodiment, "the first format and the second format are respectively for different device types of the recipient of the first PRDCH" includes: the first format is applicable to all device types, and the second format is for at least one of IoT devices 2a or 2b as defined in 3GPP TR38.769.

[0147] As one embodiment, "the first format and the second format are respectively for different device types of the recipient of the first PRDCH" includes: the first format is for IoT device A or IoT device B as defined in 3GPP TR38.848, and the second format is for IoT device C as defined in 3GPP TR38.848.

[0148] As one embodiment, the candidate formats of the L1 control information included in the first PRDCH also include a third format, which has the same control information size as the second format. The IoT device in this application distinguishes between the second and third formats using the first X bits of the L1 control information included in the first PRDCH, where X is a positive integer. As a supplementary embodiment, using the same size for both formats reduces the number of blind detections and improves performance.

[0149] As one embodiment, the candidate formats of L1 control information included in the first PRDCH also include a third format. The third format has a different control information size than either the second or first format. The IoT device 2a defined in 3GPP TR38.769 can monitor the control information sizes of both the first and second formats, and the IoT device 2b defined in 3GPP TR38.769 can monitor both the first and third formats. As a supplementary embodiment, using control information of different sizes provides greater flexibility.

[0150] As an example, the device type of the recipient of the first PRDCH is the same as the device type of the IoT device in this application.

[0151] As an example, the device type of the receiver of the first PRDCH in this application and the device type of the IoT device in this application are equivalent or can be used interchangeably.

[0152] As an example, the device type of the receiver of the first PRDCH includes one of device 1, device 2a, and device 2b as defined in 3GPP TR38.769.

[0153] As an example, the device type of the receiver of the first PRDCH includes one of device A, device B, and device C as defined in 3GPP TR38.848.

[0154] As an example, the device type of the receiver of the first PRDCH is determined based on at least one of the following: power consumption, presence of an amplifier, and use of backscattering.

[0155] As an example, the device type of the receiver of the first PRDCH is classified according to the complexity of the device.

[0156] As an example, the device type of the receiver of the first PRDCH is determined based on the device's capabilities.

[0157] As an example, the device type of the receiver of the first PRDCH is determined based on whether it has a power amplifier.

[0158] As an example, the device type of the receiver of the first PRDCH is determined based on whether it has a battery or its capacity.

[0159] As an example, the device type of the receiver of the first PRDCH is determined based on the device receiver sensitivity.

[0160] As an example, the device type of the receiver of the first PRDCH is determined based on whether the uplink transmission is generated internally by the device or by backscattering.

[0161] As an example, the device type of the receiver of the first PRDCH depends on the indication of the core network.

[0162] As an example, the device type of the receiver of the first PRDCH depends on the signaling indication of the core network device.

[0163] As an example, the device type of the receiver of the first PRDCH is indicated by the core network.

[0164] As an example, the core network indicates the device type of the receiver of the first PRDCH that the terminal wants to communicate with.

[0165] As an example, the core network indicates the device type of the receiver of the first PRDCH based on the currently provided services.

[0166] As an example, after obtaining the device type of the IoT device based on the identifier of the IoT device related to the current service, the core network instructs the terminal on the device type of the receiver of the first PRDCH.

[0167] As an example, the device type of the receiver of the first PRDCH is indicated by NAS.

[0168] As an example, the device type of the receiver of the first PRDCH is indicated by NAS.

[0169] As one embodiment, "the number of control information bits included in the first format and the number of control information bits included in the second format are different" includes: the number of control information bits included in the first format is not equal to the number of control information bits included in the second format.

[0170] As one embodiment, "the number of control information bits included in the first format and the number of control information bits included in the second format are different" includes: the control information size of the first format and the second format are different.

[0171] As one embodiment, "the number of control information bits included in the first format and the number of control information bits included in the second format are different" includes: the second format includes more control information bits than the first format.

[0172] As one embodiment, "the number of control information bits included in the first format and the number of control information bits included in the second format are different" includes: the size of the control information in the second format is larger than the size of the control information in the first format.

[0173] As an example, the network side ensures that the number of control information bits included in the first format is not equal to the number of control information bits included in the second format.

[0174] As one embodiment, "only the L1 control information of the second format, which is the first format, includes device type information" includes: the L1 control information of the first format does not include device type information, and the L1 control information of the second format includes device type information.

[0175] As one embodiment, "only the L1 control information of the second format, which is the first format, includes device type information" includes: the L1 control information of the first format does not include a field indicating the device type, and the L1 control information of the second format includes a field indicating the device type.

[0176] As one embodiment, "only the L1 control information of the second format, which is the first format, includes device type information" includes: the L1 control information of the first format does not include device type information, and the CRC of the L1 control information of the second format is scrambled with RNTI (Radio Network Temporary Identifier) ​​related to the device type.

[0177] As one embodiment, "only the L1 control information of the second format, which is the first format, includes device type information" includes: the L1 control information of the first format includes only the scheduling information of the first PRDCH, and the L1 control information of the second format includes both the scheduling information of the first PRDCH and device type information.

[0178] As one embodiment, "the L1 control information of only the second format of the first format and the second format includes device type information" includes: the L1 control information of the second format indicates the device type of the receiver of the first PRDCH.

[0179] As an example, "only the L1 control information of the second format, whichever is greater than the first format, includes device type information" means that at least one field included in the L1 control information of the second format explicitly or implicitly indicates the device type.

[0180] As an example, "only the L1 control information of the second format, whichever is greater than the first format, includes device type information" includes: at least one field included in the L1 control information of the second format explicitly or implicitly indicates the device type of the receiver of the first PRDCH.

[0181] As an example, "only the L1 control information of the second format, whichever is the first format, includes device type information" includes: a field included in the L1 control information of the second format indicates the device type of the receiver of the first PRDCH.

[0182] As one embodiment, "only the L1 control information of the second format, whichever is more of the first format or the second format, includes device type information" includes: the L1 control information of the second format includes a field related to the device type.

[0183] As an example, "only the L1 control information of the second format of the first format and the second format includes device type information" includes: a field included in the L1 control information of the second format indicates that the recipient of the first PRDCH is IoT device 1, IoT device 2a, or IoT device 2b as defined in 3GPP TR38.769.

[0184] As an example, "only the L1 control information of the second format, whichever is more of the first format or the second format, includes device type information" includes: a field included in the L1 control information of the second format indicates that the recipient of the first PRDCH is IoT device A, IoT device B, or IoT device C as defined in 3GPP TR38.848.

[0185] As one embodiment, "only the L1 control information of the second format, whichever is more of the first format or the second format, includes device type information" includes: a field included in the L1 control information of the second format indicates the identifier (ID) of the receiver of the first PRDCH.

[0186] As one embodiment, "only the L1 control information of the second format, whichever is greater than the first format, includes device type information" includes: a field included in the L1 control information of the second format indicates the group identifier of the receiver of the first PRDCH.

[0187] As an example, "only the L1 control information of the second format, which is the first format, includes device type information" includes: a field included in the L1 control information of the second format indicates the identifier (ID) of the receiver of the first PRDCH, and different device types correspond to different identifier (ID) ranges.

[0188] Example 2

[0189] Example 2 illustrates a schematic diagram of a network architecture according to this application, as shown in Figure 2. Figure 2 illustrates a network architecture 200 for a 5G NR, LTE (Long-Term Evolution), and LTE-A (Long-Term Evolution Advanced) system. The 5G NR or LTE network architecture 200 may be referred to as 5GS (5G System) / EPS (Evolved Packet System) 200 or some other suitable term. 5GS / EPS 200 may include one or more UE (User Equipment) 201, NG-RAN (Next Generation Radio Access Network) 202, 5GC (5G Core Network) / EPC (Evolved Packet Core) 210, HSS (Home Subscriber Server) / UDM (Unified Data Management) 220, and Internet services 230. 5GS / EPS may interconnect with other access networks, but these entities / interfaces are not shown for simplicity. As shown in the figure, 5GS / EPS provides packet-switched services; however, those skilled in the art will readily understand that the various concepts presented throughout this application can be extended to networks providing circuit-switched services or other cellular networks. NG-RAN includes NR / Evolved Node B (gNB / eNB) 203 and other gNBs (eNBs) 204. gNBs (eNBs) 203 provide user and control plane protocol termination to UE 201. gNBs (eNBs) 203 can connect to other gNBs (eNBs) 204 via Xn / X2 interfaces (e.g., backhaul). gNBs (eNBs) 203 may also be referred to as a base station, base transceiver station, radio base station, radio transceiver, transceiver function, Basic Services Set (BSS), Extended Services Set (ESS), TRP (Transmitter Receiver Node), or some other suitable terminology. gNBs (eNBs) 203 provide UE 201 with an access point to the 5GC / EPC 210. Examples of UE201 include cellular phones, smartphones, Session Initiation Protocol (SIP) phones, laptops, personal digital assistants (PDAs), satellite radios, non-terrestrial base station communications, satellite mobile communications, global positioning systems, multimedia devices, video devices, digital audio players (e.g., MP3 players), cameras, game consoles, drones, aircraft, narrowband IoT devices, machine-type communication devices, land vehicles, automobiles, wearable devices, test equipment, test instruments, test tools, or any other similar functional devices.Those skilled in the art may also refer to UE201 as a mobile station, subscriber station, mobile unit, subscriber unit, radio unit, remote unit, mobile device, radio device, wireless communication device, remote device, mobile subscriber station, access terminal, mobile terminal, radio terminal, remote terminal, handheld device, user agent, mobile client, client, or any other suitable term. gNB (eNB)203 connects to 5GC / EPC210 via the S1 / NG interface. 5GC / EPC210 includes MME (Mobility Management Entity) / AMF (Authentication Management Field) / SMF (Session Management Function)211, other MME / AMF / SMF214, S-GW (Service Gateway) / UPF (User Plane Function)212, and P-GW (Packet Data Network Gateway) / UPF213. The MME / AMF / SMF211 is the control node that handles signaling between UE201 and 5GC / EPC210. ​​Essentially, the MME / AMF / SMF211 provides bearer and connection management. All user IP (Internet Protocol) packets are transmitted through the S-GW / UPF212, which is itself connected to the P-GW / UPF213. The P-GW provides UE IP address allocation and other functions. The P-GW / UPF213 is connected to Internet service 230. Internet service 230 includes operator-compliant Internet Protocol services, specifically including the Internet, intranet, IMS (IP Multimedia Subsystem), and packet-switched streaming services.

[0190] As an example, the UE201 corresponds to the device of the terminal described in this application.

[0191] As an example, the UE201 supports OOK.

[0192] As an example, Device241 corresponds to the IoT device described in this application.

[0193] Example 3

[0194] Example 3 illustrates a schematic diagram of the wireless protocol architecture for the user plane and control plane according to an embodiment of this application, as shown in Figure 3. Figure 3 is a schematic diagram illustrating an embodiment of the radio protocol architecture for the user plane 350 and control plane 300. Figure 3 shows the radio protocol architecture for the control plane 300 for terminals, base stations, and IoT devices using three layers: Layer 1, Layer 2, and Layer 3. Layer 1 (L1 layer) is the lowest layer and implements various PHY (Physical Layer) signal processing functions. The L1 layer will be referred to herein as PHY 301. Layer 2 (L2 layer) 305 is above PHY 301 and is responsible for the link between the terminal and the base station via PHY 301. L2 layer 305 includes a MAC (Medium Access Control) sublayer 302, an RLC (Radio Link Control) sublayer 303, and a PDCP (Packet Data Convergence Protocol) sublayer 304, which terminate at the base station or IoT device. PDCP sublayer 304 provides multiplexing between different radio bearers and logical channels. PDCP sublayer 304 also provides security through encrypted data packets, and provides cross-cell mobility support between base stations and between IoT devices. RLC sublayer 303 provides upper-layer data packet segmentation and reassembly, retransmission of lost data packets, and data packet reordering to compensate for out-of-order reception due to HARQ. MAC sublayer 302 provides multiplexing between logical and transport channels. MAC sublayer 302 is also responsible for allocating various radio resources (e.g., resource blocks) within a cell among terminals. MAC sublayer 302 is also responsible for HARQ operations. The RRC (Radio Resource Control) sublayer 306 in Layer 3 (L3) of the control plane 300 is responsible for acquiring radio resources (i.e., radio bearers) and configuring the lower layers using RRC signaling between base stations and terminals. The radio protocol architecture of user plane 350 includes layer 1 (L1 layer) and layer 2 (L2 layer). The radio protocol architecture for terminals, base stations and IoT devices in user plane 350 is largely the same as the corresponding layers and sublayers in control plane 300 for physical layer 351, PDCP sublayer 354 in L2 layer 355, RLC sublayer 353 in L2 layer 355 and MAC sublayer 352 in L2 layer 355. However, PDCP sublayer 354 also provides header compression for upper layer data packets to reduce radio transmission overhead.The L2 layer 355 in the user plane 350 also includes an SDAP (Service Data Adaptation Protocol) sublayer 356. The SDAP sublayer 356 is responsible for mapping between QoS streams and data radio bearers (DRBs) to support service diversity. Although not illustrated, the terminal may have several upper layers above the L2 layer 355, including a network layer (e.g., IP layer) terminating at the P-GW on the network side and an application layer terminating at the other end of the connection (e.g., a remote UE, server, etc.).

[0195] As an example, the wireless protocol architecture in FIG3 is applicable to the terminal described in this application.

[0196] As an example, the wireless protocol architecture in Figure 3 is applicable to the IoT device described in this application.

[0197] As an example, the first PRDCH in this application is generated in MAC302, or MAC352, or PHY301, or PHY351.

[0198] As an example, the first PDRCH in this application is generated in MAC302, or MAC352, or PHY301, or PHY351.

[0199] Example 4

[0200] Example 4 illustrates a schematic diagram of a terminal and an Internet of Things (IoT) device according to an embodiment of this application, as shown in FIG4.

[0201] The terminal (410) may include a controller / processor 440, a memory 430, a receiver processor 412, a transmitter / receiver 416 and a transmitter processor 415, the transmitter / receiver 416 including an antenna 420.

[0202] The Internet of Things device (450) may include a controller / processor 490 (if supported), a memory 480, a receiver processor 452, a transmitter / receiver 456 and a transmitter processor 455, the transmitter / receiver 456 including an antenna 460.

[0203] In the transmission from the terminal to the IoT device, upper-layer packets are provided to the controller / processor 440. The controller / processor 440 implements functions of Layer 2 and above. The controller / processor 440 provides packet header compression, encryption, packet segmentation and reordering, multiplexing between logical and transport channels, and radio resource allocation based on various priority metrics. The controller / processor 440 is also responsible for HARQ operation, retransmission of lost packets (if supported), and higher-layer signaling to the IoT device 450. The higher-layer information carried by the first PRDCH in this application is generated in the controller / processor 440. The transmit processor 415 implements various signal processing functions for Layer 1 (i.e., physical layer), including encoding, interleaving, scrambling, modulation, power control / allocation, precoding, and physical layer control signaling generation, such as the first PRDCH in this application, which is performed in the transmit processor 415. The generated modulation symbols are divided into parallel streams, and each stream is mapped to a corresponding multicarrier subcarrier and / or multicarrier symbol. These are then transmitted by the transmit processor 415 via the transmitter 416 to the antenna 420 as radio frequency (RF) signals. At the receiver, each receiver 456 receives the RF signal through its corresponding antenna 460. Each receiver 456 recovers the baseband information modulated onto the RF carrier (if baseband processing is supported) and provides this baseband information to the receive processor 452. The receive processor 452 implements various signal reception and processing functions of the L1 layer. The signal reception and processing function includes receiving the first PRDCH in this application, performing various modulation schemes (e.g., On-Off Keying (OOK), Binary Phase Shift Keying (BPSK), followed by descrambling, decoding, and deinterleaving (if supported) to recover the data or control signals transmitted by terminal 410 on the physical channel, and then providing the data and control signals to controller / processor 490 (if supported by the IoT device). Controller / processor 490 is responsible for Layer 2 and above, and interprets higher-layer information, including the higher-layer information carried by the first PRDCH in this application. The controller / processor may be associated with a memory 480 that stores program code and data. Memory 480 may be referred to as computer-readable media.

[0204] In the transmission from IoT devices to terminals, similar to the transmission from terminals to IoT devices, the higher-layer information carried by the first PDRCH, after being generated by the controller / processor 490 (if supported by the IoT device), is processed by the transmitter processor 455 to perform various signal transmission processing functions for the L1 layer (i.e., physical layer). The transmitter processor 455, including the physical layer signal of the first PDRCH, is mapped to the antenna 460 via the transmitter 456 and transmitted as a radio frequency signal. The receiver 416 receives the radio frequency signal through its corresponding antenna 420. Each receiver 416 recovers the baseband information modulated onto the radio frequency carrier and provides the baseband information to the receiver processor 412. The receiver processor 412 performs various signal reception processing functions for the L1 layer (i.e., physical layer) and then provides data and / or control signals to the controller / processor 440. The controller / processor 440 performs L2 layer functions, including interpreting the higher-layer information. The controller / processor may be associated with a memory 430 that stores program code and data. The memory 430 may be a computer-readable medium.

[0205] As one embodiment, the terminal 410 includes: at least one processor and at least one memory, the at least one memory including computer program code; the at least one memory and the computer program code are configured to be used with the at least one processor, and the terminal at least: transmits a first PRDCH, the first PRDCH using OOK; wherein, the first PRDCH includes L1 control information, the candidate formats of the L1 control information included in the first PRDCH include at least a first format and a second format, the first format and the second format are respectively for different device types of the receivers of the first PRDCH, the number of control information bits included in the first format and the number of control information bits included in the second format are different, and only the L1 control information of the second format includes device type information.

[0206] As one embodiment, the terminal 410 includes: a memory storing a computer-readable instruction program that generates an action when executed by at least one processor, the action including: sending a first PRDCH, the first PRDCH using OOK; wherein the first PRDCH includes L1 control information, the candidate formats of the L1 control information included in the first PRDCH include at least a first format and a second format, the first format and the second format are respectively for different device types of the receiver of the first PRDCH, the number of control information bits included in the first format and the number of control information bits included in the second format are different, and only the L1 control information of the second format includes device type information.

[0207] As one embodiment, the IoT device 450 includes: at least one processor and at least one memory, the at least one memory including computer program code; the at least one memory and the computer program code are configured to be used with the at least one processor. The IoT device 450 at least: receives a first PRDCH, the first PRDCH using OOK; wherein the first PRDCH includes L1 control information, and the candidate formats of the L1 control information included in the first PRDCH include at least a first format and a second format, the first format and the second format being for different device types of the IoT device, the number of control information bits included in the first format and the number of control information bits included in the second format being different, and only the second format of the L1 control information including device type information.

[0208] As one embodiment, the IoT device 450 includes: a memory storing a computer-readable instruction program that generates actions when executed by at least one processor, the actions including: receiving a first PRDCH, the first PRDCH using OOK; wherein the first PRDCH includes L1 control information, the candidate formats of the L1 control information included in the first PRDCH include at least a first format and a second format, the first format and the second format are respectively for different device types of the IoT device, the number of control information bits included in the first format and the number of control information bits included in the second format are different, and only the second format of the first format includes device type information in its L1 control information.

[0209] As an example, the terminal 410 is a user equipment (UE).

[0210] As an example, the IoT device 450 is an environmental IoT device.

[0211] As an example, the Internet of Things device 450 is an RFID device.

[0212] As one embodiment, transmitter 416 (including antenna 420), transmitter processor 415 and controller / processor 440 are used to transmit the first PRDCH in this application.

[0213] As one embodiment, receiver 416 (including antenna 420), receiver processor 412 and controller / processor 440 are used to receive the first PDRCH in this application.

[0214] As one embodiment, receiver 456 (including antenna 460), receiver processor 452 and controller / processor 490 are used to receive the first PRDCH in this application.

[0215] As one embodiment, transmitter 456 (including antenna 460), transmitter processor 452 and controller / processor 490 are used to transmit the first PDRCH in this application.

[0216] Example 5

[0217] Example 5 illustrates a flowchart of a terminal and IoT device transmission according to an embodiment of this application, as shown in FIG5. In FIG5, terminal U550 is a reader device of IoT device D500. It should be noted that the order in this example does not limit the signal transmission order and implementation order in this application.

[0218] For terminal U550, the first PRDCH is sent in step S551 and the first PDRCH is received in step S552;

[0219] For IoT device D500, the first PRDCH is received in step S501 and the first PDRCH is sent in step S502.

[0220] In embodiment 5, the terminal sends a first PRDCH, which uses OOK. The first PRDCH includes L1 control information, and the candidate formats for the L1 control information include at least a first format and a second format. The first format and the second format are respectively designed for different device types of the receivers of the first PRDCH. The number of control information bits included in the first format and the number of control information bits included in the second format are different. Only the L1 control information of the second format includes device type information. The terminal receives a first PDRCH. When the L1 control information included in the first PRDCH uses the first format, a MAC layer field included in the first PRDCH indicates the number of chips occupied by the first PDRCH. When the L1 control information included in the first PRDCH uses the first format, a field of the L1 control information included in the first PRDCH indicates the number of chips occupied by the first PDRCH. The chips include at least one of OOK time units and BPSK time units.

[0221] Example 6

[0222] Example 6 illustrates a schematic diagram of monitoring the number of control information bits for different device types according to an embodiment of this application, as shown in Figure 6. In Figure 6, the dashed arrows indicate monitoring relationships. Devices of type 1 monitor the number of control information bits corresponding to the first format, while devices of type 2a or type 2b monitor the number of control information bits corresponding to the first format and the number of control information bits corresponding to the second format.

[0223] In embodiment 6, the device type includes at least one of type 1, type 2a, and type 2b. The IoT device of type 1 monitors the number of control information bits corresponding to the first format, and at least one of the IoT devices of type 2a or type 2b monitors the number of control information bits corresponding to the first format and the number of control information bits corresponding to the second format.

[0224] As an example, considering that IoT devices of type 2a or type 2b have higher complexity than IoT devices of type 1, type 2a or type 2b monitors more control information bits in more formats, improving flexibility and maximizing the performance of type 2a or type 2b.

[0225] As an example, the device type is the same as the device type of the IoT device in this application.

[0226] As an example, the device type also includes other device types besides Type 1, Type 2a and Type 2b.

[0227] As an example, type 1 is A-IoT device 1 as defined in 3GPP TR38.769.

[0228] As an example, type 2a is A-IoT device 2a as defined in 3GPP TR38.769.

[0229] As an example, type 2b is A-IoT device 2b as defined in 3GPP TR38.769.

[0230] As an example, Type 1 is an A-IoT device with a peak power consumption of approximately 1 μW, energy storage, an initial sampling frequency offset (SFO) of up to 10 x ppm (parts per million), no uplink or downlink power amplification, and uplink transmission of the device via backscattering of an externally provided carrier.

[0231] As an example, type 2a is an A-IoT device with a peak power consumption of less than or equal to 100 μW, energy storage, an initial sampling frequency offset (SFO) of up to 10 x ppm (parts per million), uplink and downlink power amplification, and uplink transmission of the device via backscattering of an externally provided carrier.

[0232] As an example, type 2b is a device with peak power consumption less than or equal to 100μW, energy storage, an initial sampling frequency offset (SFO) of up to 10Xppm (parts per million), uplink and downlink power amplification, and uplink transmission of the device being generated internally by an A-IoT device.

[0233] As one example, the monitoring involves decoding control information in a specific format.

[0234] As an example, the monitoring is a blind detection of control information in a specific format.

[0235] As an example, "the IoT device of type 1 monitors the number of control information bits corresponding to the first format" includes: the IoT device of type 1 decodes the L1 control information included in the first PRDCH according to the number of control information bits corresponding to the first format.

[0236] As an example, "the IoT device of type 1 monitors the number of control information bits corresponding to the first format" includes: the IoT device of type 1 is able to decode the L1 control information of the first format.

[0237] As an example, "the IoT device of type 1 monitors the number of control information bits corresponding to the first format" includes: the IoT device of type 1 receives the first X bits of the PRDCH and then starts decoding the control information, where X is the number of control information bits corresponding to the first format.

[0238] As an example, "the IoT device of type 1 monitors the number of control information bits corresponding to the first format" includes: the IoT device of type 1 receives the first X bits of the PRDCH and then starts decoding the control information, where X is the total number of bits of the control information corresponding to the first format after attaching the CRC.

[0239] As an example, "the IoT device of type 1 monitors the number of control information bits corresponding to the first format" includes: the IoT device of type 1 receives the first 2X OOK chips of the PRDCH and then starts decoding the control information, where X is the number of control information bits corresponding to the first format.

[0240] As an example, "the IoT device of type 1 monitors the number of control information bits corresponding to the first format" includes: the IoT device of type 1 receives the first 2X OOK chips of the PRDCH and then starts decoding the control information, where X is the total number of bits of the control information corresponding to the first format after attaching the CRC.

[0241] As an example, "the number of control information bits corresponding to the first format monitored by the IoT device of type 1" includes: the IoT device of type 1 only monitors one L1 control information size.

[0242] As an example, "the number of control information bits corresponding to the first format monitored by the IoT device of type 1" includes: the IoT device of type 1 only monitors one RDCI size.

[0243] As an example, the IoT device of type 1 monitors only one L1 control information size, while at least one of the IoT devices of type 2a or type 2b can monitor at least two L1 control information sizes.

[0244] As an example, "at least one of the IoT devices of type 2a or type 2b monitors the number of control information bits corresponding to the first format and the number of control information bits corresponding to the second format" includes: the IoT device of type 2a monitors the number of control information bits corresponding to the first format and the number of control information bits corresponding to the second format.

[0245] As an example, "at least one of the IoT devices of type 2a or type 2b monitors the number of control information bits corresponding to the first format and the number of control information bits corresponding to the second format" includes: the IoT device of type 2b monitors the number of control information bits corresponding to the first format and the number of control information bits corresponding to the second format.

[0246] As an example, "at least one of the IoT devices of type 2a or type 2b monitors the number of control information bits corresponding to the first format and the number of control information bits corresponding to the second format" includes: the IoT device of type 2a and the IoT device of type 2b monitor the number of control information bits corresponding to the first format and the number of control information bits corresponding to the second format.

[0247] As an example, "at least one of the IoT devices of type 2a or type 2b monitors the number of control information bits corresponding to the first format and the number of control information bits corresponding to the second format" includes: at least one of the IoT devices of type 2a or type 2b monitors the size of the control information bits corresponding to the first format and the size of the control information bits corresponding to the second format.

[0248] As an example, "at least one of the IoT devices of type 2a or type 2b monitors the number of control information bits corresponding to the first format and the number of control information bits corresponding to the second format" includes: at least one of the IoT devices of type 2a or type 2b monitors two control information sizes.

[0249] As an example, "at least one of the IoT devices of type 2a or type 2b monitors the number of control information bits corresponding to the first format and the number of control information bits corresponding to the second format" includes: at least one of the IoT devices of type 2a or type 2b first decodes the control information according to the number of control information bits corresponding to the first format, and if it cannot be decoded correctly, then decodes the control information according to the number of control information bits corresponding to the second format.

[0250] As an example, "at least one of the IoT devices of type 2a or type 2b monitors the number of control information bits corresponding to the first format and the number of control information bits corresponding to the second format" includes: at least one of the IoT devices of type 2a or type 2b first decodes the control information according to the number of control information bits corresponding to the second format, and if it cannot be decoded correctly, then decodes the control information according to the number of control information bits corresponding to the first format.

[0251] As an example, the size of the L1 control information of the IoT device monitoring (monitor) of type 2a and type 2b is no greater than 4.

[0252] As an example, at least one of the IoT devices of type 2a or type 2b also monitors the size corresponding to L1 control information in other formats.

[0253] As an example, the IoT device of type 1 in this application can only decode the L1 control information carried by the first PRDCH according to the number of control information bits corresponding to the first format.

[0254] As an example, the number of bits of L1 control information for the IoT device in this application of type 1 is fixed.

[0255] As an example, the format of the L1 control information for the IoT device in this application of type 1 is unique.

[0256] Example 7

[0257] Example 7 illustrates a schematic diagram of the L1 control information indicating transmission mode included in the first PRDCH according to an embodiment of this application, as shown in FIG7. In FIG7, the rectangle enclosed by the thick line frame represents the first PRDCH, the cross-filled rectangle represents the L1 control information in the second format, and the dashed arrow indicates the indication relationship, wherein the L1 control information in the second format indicates the transmission mode.

[0258] In embodiment 7, the L1 control information included in the first PRDCH adopts the second format, and one field included in the L1 control information included in the first PRDCH indicates the transmission mode, which includes at least one of unicast, multicast or broadcast; when the transmission mode is indicated as multicast, at least one field included in the L1 control information included in the first PRDCH indicates the group identifier of multicast.

[0259] As an example, the transmission mode is indicated in the L1 control information, and when the transmission mode is multicast, the group identifier is indicated. This can prevent non-target devices from continuing to decode data information after receiving PRDCH, allowing non-target devices to end reception early, saving power of IoT devices and reducing implementation complexity.

[0260] As one embodiment, "a field included in the L1 control information of the first PRDCH indicates the transmission mode" includes: a field included in the L1 control information of the first PRDCH explicitly or implicitly indicates the transmission mode (cast type).

[0261] As one embodiment, "the L1 control information included in the first PRDCH includes a field indicating the transmission mode" includes: the L1 control information included in the first PRDCH includes a transmission mode indicator (cast type indicator) field.

[0262] As an example, "a field including the L1 control information included in the first PRDCH indicating the transmission mode" includes: the transmission mode indicator field is a field that constitutes the format of the L1 control information included in the first PRDCH.

[0263] As one embodiment, "a domain indicating transmission mode included in the L1 control information of the first PRDCH" includes: at least one L1 control information bit included in the first PRDCH indicating the transmission mode.

[0264] As one embodiment, "a field indicating transmission mode included in the L1 control information included in the first PRDCH" includes: a bit indicating transmission mode (cast type) included in the L1 control information included in the first PRDCH.

[0265] As an example, "the domain of the L1 control information included in the first PRDCH indicating the transmission mode" includes: the two bits of the L1 control information included in the first PRDCH indicating the transmission mode (cast type).

[0266] As an example, "the domain of the L1 control information included in the first PRDCH indicating the transmission mode" includes: the two bits of the L1 control information included in the first PRDCH indicating the transmission mode (cast type), where "00" indicates broadcast, "01" indicates groupcast, and "10" indicates unicast.

[0267] As an example, the transmission mode indicated by the L1 control information included in the first PRDCH depends on the configuration or indication of the base station.

[0268] As an example, the transmission mode indicated by the L1 control information included in the first PRDCH is indicated by high-layer parameters.

[0269] As one example, "the transmission mode includes at least one of unicast, multicast, or broadcast" includes: the transmission mode includes only unicast, multicast, and broadcast.

[0270] As one embodiment, "the transmission mode includes at least one of unicast, multicast, or broadcast" includes: the transmission mode includes only unicast and broadcast.

[0271] As one example, "the transmission mode includes at least one of unicast, multicast, or broadcast" includes: the transmission mode includes only multicast and broadcast.

[0272] As one embodiment, the unicast is the reader device sending a PRDCH to a specific IoT device in this application.

[0273] As one embodiment, the multicast is a reader device sending a PRDCH to a group of IoT devices in this application.

[0274] As one embodiment, the broadcast is the reader device sending a PRDCH to all IoT devices within the coverage area of ​​this application.

[0275] As one embodiment, indicating the transmission mode as multicast includes: the value of the field indicating the transmission mode is the value corresponding to multicast.

[0276] As one embodiment, indicating the transmission mode as multicast includes: the L1 control information included in the first PRDCH indicating the transmission mode as multicast.

[0277] As one embodiment, the transmission mode is indicated as multicast, including: the first PRDCH is sent to a group of IoT devices.

[0278] As one embodiment, "at least one field included in the L1 control information included in the first PRDCH indicates the group identifier of the multicast" includes: at least one field included in the L1 control information included in the first PRDCH explicitly or implicitly indicates the group identifier (IDentity, ID) of the multicast.

[0279] As one embodiment, "at least one field included in the L1 control information included in the first PRDCH indicates a multicast group identifier" includes: a field included in the L1 control information included in the first PRDCH indicates a multicast group identifier.

[0280] As one embodiment, "at least one field included in the L1 control information included in the first PRDCH indicates the group identifier of the multicast" includes: at least one field included in the L1 control information included in the first PRDCH indicates the group index of the multicast.

[0281] As one embodiment, "at least one field included in the L1 control information of the first PRDCH indicates the group identifier of the multicast" includes: at least one bit included in the L1 control information of the first PRDCH indicates the group identifier of the multicast.

[0282] As one embodiment, "at least one field included in the L1 control information included in the first PRDCH indicates the group identifier of the multicast" includes: multiple bits included in the L1 control information included in the first PRDCH indicate the group identifier of the multicast.

[0283] As an example, at least one field of the L1 control information included in the first PRDCH indicates a first group of identifiers. After receiving the first PRDCH and decoding the first group of identifiers, IoT devices in this application that do not belong to the first group of identifiers ignore the first PRDCH.

[0284] As an example, at least one field of the L1 control information included in the first PRDCH indicates a first group of identifiers. After receiving the first PRDCH and decoding the first group of identifiers, IoT devices in this application that do not belong to the first group of identifiers do not continue to decode the first PRDCH.

[0285] Example 8

[0286] Example 8 illustrates a schematic diagram of the receiver's device type indicating a first PRDCH according to an embodiment of this application, as shown in FIG8. In FIG8, the rectangle enclosed by the thick line represents the first PRDCH, the cross-filled rectangle represents L1 control information in the first format, the blank-filled rectangle enclosed by the thin line represents a MAC layer field, and the dashed arrow indicates an indication relationship. A MAC layer field carried by the first PRDCH indicates the receiver's device type.

[0287] In embodiment 8, the L1 control information included in the first PRDCH adopts the first format, and at least one MAC layer field carried by the first PRDCH indicates the device type of the receiver of the first PRDCH.

[0288] As an example, indicating the device type of the receiver of the first PRDCH in the MAC layer domain can save the overhead of L1 control information and reduce the implementation complexity of the device type corresponding to the L1 control information of the first format.

[0289] As one embodiment, "the L1 control information included in the first PRDCH adopts the first format" includes: the L1 control information included in the first PRDCH is L1 control information in the first format.

[0290] As one embodiment, "the L1 control information included in the first PRDCH adopts the first format" includes: the first PRDCH carries L1 control information in the first format.

[0291] As an example, at least one MAC layer domain carried by the first PRDCH is MAC (Medium Access Control) layer information mapped onto the first PRDCH.

[0292] As an example, at least one MAC layer field carried by the first PRDCH is MAC layer information included in the transport block (TB) mapped on the first PRDCH.

[0293] As an example, at least one MAC layer field carried by the first PRDCH is a MAC layer field of the transport channel mapped on the first PRDCH.

[0294] As an example, at least one MAC layer field carried by the first PRDCH is the information included in the MAC PDU (Protocol Data Unit) mapped on the first PRDCH.

[0295] As an example, at least one MAC layer domain carried by the first PRDCH is the information included in the MAC SDU (Service Data Unit) mapped on the first PRDCH.

[0296] As an example, at least one MAC layer domain carried by the first PRDCH is the MAC CE (control element) carried by the first PRDCH.

[0297] As an example, at least one MAC layer field carried by the first PRDCH is the MAC header carried by the first PRDCH.

[0298] As an example, at least one MAC layer field carried by the first PRDCH is the MAC payload carried by the first PRDCH.

[0299] As an example, at least one MAC layer field carried by the first PRDCH includes at least one bit.

[0300] As one embodiment, "at least one MAC layer field carried by the first PRDCH indicates the device type of the receiver of the first PRDCH" includes: at least one MAC layer field carried by the first PRDCH explicitly or implicitly indicates the device type of the receiver of the first PRDCH.

[0301] As one embodiment, "at least one MAC layer field carried by the first PRDCH indicates the device type of the receiver of the first PRDCH" includes: a MAC layer field carried by the first PRDCH indicates the device type of the receiver of the first PRDCH.

[0302] As one embodiment, "at least one MAC layer field carried by the first PRDCH indicates the device type of the receiver of the first PRDCH" includes: multiple MAC layer fields carried by the first PRDCH indicate the device type of the receiver of the first PRDCH.

[0303] As one embodiment, "at least one MAC layer field carried by the first PRDCH indicates the device type of the receiver of the first PRDCH" includes: at least one MAC layer field carried by the first PRDCH indicates that the receiver of the first PRDCH is IoT device 1, IoT device 2a, or IoT device 2b as defined in 3GPP TR38.769.

[0304] As one embodiment, "at least one MAC layer field carried by the first PRDCH indicates the device type of the receiver of the first PRDCH" includes: at least one MAC layer field carried by the first PRDCH indicates that the receiver of the first PRDCH is IoT device A, IoT device B, or IoT device C as defined in 3GPP TR38.848.

[0305] As one embodiment, "at least one MAC layer field carried by the first PRDCH indicates the device type of the receiver of the first PRDCH" includes: at least one MAC layer field carried by the first PRDCH indicates the identifier (ID) of the receiver of the first PRDCH, and different device types correspond to different identifier (ID) ranges of the IoT devices described in this application.

[0306] As an example, a MAC layer field carried by the first PRDCH indicates the device identifier (ID) of the receiver of the first PRDCH.

[0307] As an example, a MAC layer field carried by the first PRDCH indicates the group identifier (ID) to which the receiver of the first PRDCH belongs.

[0308] As an example, when the receiver of the first PRDCH is different from the device type of the receiver of the first PRDCH indicated by at least one MAC layer field carried by the first PRDCH, the receiver of the first PRDCH ignores the first PRDCH.

[0309] Example 9

[0310] Example 9 illustrates a schematic diagram of the relationship between a first PRDCH and a first PDRCH according to an embodiment of this application, as shown in FIG9. In FIG9, the rectangle enclosed by the thick line represents the first PRDCH or the first PDRCH, the cross-filled rectangle represents L1 control information, the rectangle enclosed by the thin line represents the MAC layer field, and the dashed arrow indicates the relationship; in case one, the first PRDCH carries L1 control information in a first format, and the MAC layer field indicates the number of chips included in the first PDRCH; in case two, the first PRDCH carries L1 control information in a second format, and the second format L1 control information indicates the number of chips included in the first PDRCH.

[0311] In Embodiment 9, when the L1 control information included in the first PRDCH of this application adopts the first format, a field of the MAC layer included in the first PRDCH indicates the number of chips occupied by the first PRDCH; when the L1 control information included in the first PRDCH adopts the second format, a field of the L1 control information included in the first PRDCH indicates the number of chips occupied by the first PDRCH, wherein the chips include at least one of OOK time units and BPSK time units.

[0312] As an example, considering the complexity of the receiving device, the information of the first PDRCH is not carried in the L1 control information of the first format, but is carried in the L1 control information of the second format. This is compatible with different types of IoT devices, making it more flexible and reducing the complexity of implementation.

[0313] As an example, the first PDRCH is a baseband signal or radio frequency signal of the PDRCH (Physical Device to Reader Channel).

[0314] As an example, the first PDRCH includes a reference signal.

[0315] As an example, the first PDRCH does not include a reference signal.

[0316] As an example, the first PDRCH includes a preamble.

[0317] As an example, the first PDRCH does not include a preamble.

[0318] As one example, the first PDRCH is transmitted from the IoT device to the reader.

[0319] As an example, the first PDRCH carries physical layer control information.

[0320] As an example, the first PDRCH does not carry physical layer control information.

[0321] As an example, the first PDRCH carries control information only from higher layers.

[0322] As an example, the first PDRCH carries all or part of the bits in a TB (transport block).

[0323] As an example, all or part of the bits in a TB are used to generate the first PDRCH.

[0324] As an example, the first PDRCH is a signal that includes only high and low levels.

[0325] As an example, the first PDRCH uses OOK.

[0326] As an example, the first PDRCH uses BPSK.

[0327] As an example, the first PDRCH uses MSK.

[0328] As an example, when the L1 control information included in the first PRDCH adopts the first format, the L1 control information included in the first PRDCH does not indicate the number of chips occupied by the first PDRCH.

[0329] As an example, when the L1 control information included in the first PRDCH adopts the first format, the L1 control information included in the first PRDCH does not include the fields related to the scheduling information of the first PDRCH.

[0330] As an example, a domain of the MAC layer included in the first PRDCH is information of the MAC (Medium Access Control) layer mapped on the first PRDCH.

[0331] As an example, a MAC layer field included in the first PRDCH is the MAC layer information included in the transport block (TB) mapped on the first PRDCH.

[0332] As an example, a MAC layer field included in the first PRDCH is a MAC layer field included in the transport channel mapped on the first PRDCH.

[0333] As an example, a MAC layer domain included in the first PRDCH is the information included in the MAC PDU (Protocol Data Unit) mapped on the first PRDCH.

[0334] As an example, a MAC layer domain included in the first PRDCH is the information included in the MAC SDU (Service Data Unit) mapped on the first PRDCH.

[0335] As an example, a MAC layer domain included in the first PRDCH is the MAC CE (control element) carried by the first PRDCH.

[0336] As an example, a MAC layer field included in the first PRDCH is the MAC header carried by the first PRDCH.

[0337] As an example, a MAC layer domain included in the first PRDCH is the MAC payload carried by the first PRDCH.

[0338] As an example, a MAC layer field included in the first PRDCH includes at least one bit.

[0339] As an example, "a field in a MAC layer included in the first PRDCH indicates the number of chips occupied by the first PDRCH" includes: a field in a MAC layer included in the first PRDCH explicitly or implicitly indicates the number of chips occupied by the first PDRCH.

[0340] As an example, "a field in a MAC layer included in the first PRDCH indicates the number of chips occupied by the first PDRCH" includes: a field in a MAC layer included in the first PRDCH indicates the number of chips occupied by the first PDRCH and the duration of each chip.

[0341] As one embodiment, "a field in the MAC layer included in the first PDRCH indicates the number of chips occupied by the first PDRCH" includes: a field in the MAC layer included in the first PDRCH indicates the resource allocation for the first PDRCH.

[0342] As an example, "a field in the MAC layer included in the first PRDCH indicates the number of chips occupied by the first PDRCH" includes: a field in the MAC layer included in the first PRDCH indicates the duration of the first PDRCH.

[0343] As an example, "a field in the MAC layer included in the first PDRCH indicates the number of chips occupied by the first PDRCH" includes: a field in the MAC layer included in the first PDRCH indicates the size of the TB (transport block) carried by the first PDRCH.

[0344] As an example, "a field in the MAC layer included in the first PDRCH indicates the number of chips occupied by the first PDRCH" includes: a field in the MAC layer included in the first PDRCH indicates a resource allocation index, and the number of chips occupied by the first PDRCH has a mapping relationship or correspondence with the resource allocation index.

[0345] As an example, when the L1 control information included in the first PRDCH adopts the first format, a MAC layer field included in the first PRDCH also indicates the duration of each chip occupied by the first PRDCH.

[0346] As one embodiment, "a field included in the L1 control information of the first PDRCH indicates the number of chips occupied by the first PDRCH" includes: a field included in the L1 control information of the first PDRCH explicitly or implicitly indicates the number of chips occupied by the first PDRCH.

[0347] As an example, "a field included in the L1 control information of the first PDRCH indicating the number of chips occupied by the first PDRCH" includes: the L1 control information included in the first PDRCH includes a resource allocation indicator field for the first PDRCH.

[0348] As an example, "a field included in the L1 control information of the first PDRCH indicating the number of chips occupied by the first PDRCH" includes: the resource allocation indicator field for the first PDRCH is a field that constitutes the format of the L1 control information included in the first PDRCH.

[0349] As an example, "a field included in the L1 control information of the first PDRCH indicating the number of chips occupied by the first PDRCH" includes: the resource allocation indicator field for the first PDRCH included in the L1 control information of the first PDRCH indicating the number of chips occupied by the first PDRCH.

[0350] As an example, "a field included in the L1 control information of the first PDRCH indicating the number of chips occupied by the first PDRCH" includes: the time domain resource assignment field for the first PDRCH included in the L1 control information of the first PDRCH indicating the number of chips occupied by the first PDRCH.

[0351] As one embodiment, "a field in the L1 control information included in the first PDRCH indicates the number of chips occupied by the first PDRCH" includes: at least one L1 control information bit included in the first PDRCH indicates the number of chips occupied by the first PDRCH.

[0352] As one embodiment, "a field included in the L1 control information of the first PDRCH indicates the number of chips occupied by the first PDRCH" includes: a field included in the L1 control information of the first PDRCH indicates the duration of the first PDRCH.

[0353] As an example, "a field included in the L1 control information of the first PDRCH indicates the number of chips occupied by the first PDRCH" includes: a field included in the L1 control information of the first PDRCH indicates the size of the TB carried by the first PDRCH.

[0354] As an example, "a field included in the L1 control information of the first PDRCH indicates the number of chips occupied by the first PDRCH" includes: a field included in the L1 control information of the first PDRCH indicates the resource allocation and MCS (Modulation and Coding Scheme) of the first PDRCH.

[0355] As an example, "a field included in the L1 control information of the first PDRCH indicates the number of chips occupied by the first PDRCH" includes: a field included in the L1 control information of the first PDRCH indicates the resource allocation index and MCS (Modulation and Coding Scheme) index of the first PDRCH.

[0356] As an example, when the L1 control information included in the first PRDCH adopts the second format, a field included in the L1 control information included in the first PRDCH indicates the frequency domain resource allocation of the first PDRCH.

[0357] As an example, when the L1 control information included in the first PRDCH adopts the second format, a field included in the L1 control information included in the first PRDCH indicates the MCS (Modulation and Coding Scheme) corresponding to the first PRDCH.

[0358] As an example, the transmission mode indicated by the L1 control information included in the first PRDCH depends on the configuration or indication of the base station.

[0359] As an example, the transmission mode indicated by the L1 control information included in the first PRDCH is indicated by high-layer parameters.

[0360] As an example, the code chip corresponds to a chip.

[0361] As an example, the chip corresponds to one modulated symbol.

[0362] As an example, the chip corresponds to an OOK or BPSK modulation symbol.

[0363] As an example, the chip includes only the OOK time unit.

[0364] As an example, the chip includes only BPSK time units.

[0365] As an example, the chip includes only BPSK time units and OOK time units.

[0366] As an example, the chip also includes an MSK (Minimum Frequency Shift Keying) chip.

[0367] As an example, when the first PDRCH uses BPSK, the chip is a BPSK time unit.

[0368] As an example, when the first PDRCH uses OOK, the chip is an OOK time unit.

[0369] As an example, the BPSK time unit is a BPSK chip modulated by BPSK (Binary Phase Shift Keying).

[0370] As an example, the BPSK time unit is a continuous time.

[0371] As an example, the BPSK time unit is a square wave or sine wave with a fixed phase.

[0372] As an example, the BPSK time unit represents the encoded bits "0" and "1" through phase representation.

[0373] As an example, the BPSK time unit is the duration of a phase 0 or phase π of a local reference carrier that is a square wave or a sine wave.

[0374] As an example, the BPSK time unit includes the CP (Cyclic Prefix) of the OFDM symbol.

[0375] As an example, the BPSK time unit does not include the CP (Cyclic Prefix) of the OFDM symbol.

[0376] As an example, the OOK time unit is an OOK chip after OOK modulation.

[0377] As one embodiment, the OOK time unit includes an OOK chip.

[0378] As an example, the OOK time unit is a continuous time.

[0379] As one embodiment, the OOK time unit includes the duration of a series of high-level sampling points or a series of low-level sampling points.

[0380] As one embodiment, the OOK time unit includes: the duration of a high level or the duration of a low level.

[0381] As an example, the OOK time unit includes: the shortest duration of a high level or a low level.

[0382] As one embodiment, the OOK time unit includes: the shortest duration of a high-level envelope or a low-level envelope.

[0383] As one embodiment, the OOK time unit includes twice the shortest duration of either a high level or a low level.

[0384] As an example, the OOK time unit includes: one time unit occupied by one bit after linear encoding.

[0385] As one embodiment, the OOK time unit includes the duration of a high-level envelope or a low-level envelope.

[0386] As an example, the OOK time unit includes: the time unit mapped to one bit after linear encoding.

[0387] As an example, the OOK time unit includes: the time unit mapped to a bit that has not undergone linear encoding or Manchester encoding.

[0388] As an example, the OOK time unit includes: the time length corresponding to or mapped to one OOK bit.

[0389] As an example, the OOK time unit includes half the time length corresponding to one OOK bit.

[0390] As an example, the OOK time unit includes the duration of "01" or "10" in Manchester encoding.

[0391] As an example, the OOK time unit includes the duration of a "1" or "0" in Manchester encoding.

[0392] As an example, the OOK time unit includes the total duration of the high and low levels corresponding to one information bit in Manchester encoding.

[0393] As an example, the OOK time unit includes the minimum duration of a high level or a low level in Manchester encoding.

[0394] As an example, the OOK time unit includes: the duration of a bit after Manchester encoding, or a high level, or a low level.

[0395] As an example, the OOK time unit includes the CP (Cyclic Prefix) of the OFDM symbol.

[0396] As an example, the OOK time unit does not include the CP (Cyclic Prefix) of the OFDM symbol.

[0397] Example 10

[0398] Example 10 illustrates a schematic diagram of the relationship between control sub-signals and data sub-signals according to an embodiment of this application, as shown in FIG10. In FIG10, the horizontal axis represents time, the rectangle represents an OFDM symbol, the length of the cross fill represents a first time interval, the first PRDCH includes control sub-signals and data sub-signals, and the time-domain interval length between the control sub-signals and data sub-signals is equal to or greater than the minimum number of OFDM symbols of the first time interval.

[0399] In Embodiment 10, the first PRDCH includes a data sub-signal and a control sub-signal. The control sub-signal carries L1 control information, and the data sub-signal carries data information bits. The time-domain interval length between the control sub-signal and the data sub-signal is equal to or greater than the minimum number of OFDM symbols of a first time interval. The first time interval is equal to an absolute time or equal to multiple OOK time units.

[0400] As an example, considering the impact of processing latency of IoT devices or terminal devices or latency of configuration changes of IoT devices, one absolute time or multiple OOK time units are used to separate control sub-signals and data sub-signals, which reduces the complexity of implementation, while ensuring that the terminal is aligned with the existing OFDM symbol boundary when sending data sub-signals, thus being compatible with the existing communication architecture and improving transmission performance.

[0401] As one embodiment, "the first PRDCH includes a control sub-signal and a data sub-signal" means that the first PRDCH is divided into the control sub-signal and the data sub-signal.

[0402] As one embodiment, "the first PRDCH includes a control sub-signal and a data sub-signal" means that the two time-domain portions of the first PRDCH are the control sub-signal and the data sub-signal, respectively.

[0403] As one embodiment, "the first PRDCH includes control sub-signals and data sub-signals" means that the control information bits and the data information bits are respectively mapped to two parts of the first PRDCH.

[0404] As one embodiment, "the first PRDCH includes control sub-signals and data sub-signals" means that both the control information bits and the data information bits are mapped onto the first PRDCH.

[0405] As one embodiment, "the first PRDCH includes control sub-signals and data sub-signals" means that both the control sub-signals and the data sub-signals belong to the first PRDCH.

[0406] As one embodiment, "the first PRDCH includes a control sub-signal and a data sub-signal" means that the first PRDCH is composed of the control sub-signal and the data sub-signal.

[0407] As one embodiment, "the first PRDCH includes control sub-signals and data sub-signals" means that the control sub-signals and the data sub-signals are two parts of the first PRDCH.

[0408] As one embodiment, "the first PRDCH includes control sub-signals and data sub-signals" means that the control sub-signals and the data sub-signals constitute the first PRDCH.

[0409] As one embodiment, "the first PRDCH includes a control sub-signal and a data sub-signal" means that the control sub-signal and the data sub-signal belong to the same physical channel. As a supplementary embodiment, the control sub-signal and the data sub-signal belonging to the same physical channel has the advantage of simplifying the design.

[0410] As one embodiment, "the first PRDCH includes control sub-signals and data sub-signals" means that both the control sub-signals and the data sub-signals belong to the PRDCH (Physical Reader to Device Channel).

[0411] As one embodiment, "the first PRDCH includes control sub-signals and data sub-signals" means that both the control sub-signals and the data sub-signals are transmitted on the PRDCH (Physical Reader to Device Channel).

[0412] As one embodiment, "the first PRDCH includes control sub-signals and data sub-signals" means that the control sub-signals and the data sub-signals are a single transmission on the same physical channel.

[0413] As one embodiment, "the first PRDCH includes a control sub-signal and a data sub-signal" means that the control sub-signal and the data sub-signal are transmitted on the same physical channel in one transmission, and the control sub-signal and the data sub-signal carry different types of bit information.

[0414] As one embodiment, "the first PRDCH includes control sub-signals and data sub-signals" means that the OFDM symbols occupied by the first PRDCH in the time domain include the OFDM symbols occupied by the control sub-signals and the data sub-signals in the time domain.

[0415] As one embodiment, "the first PRDCH includes control sub-signals and data sub-signals" means that the time-frequency resources occupied by the control sub-signals and the data sub-signals belong to the time-frequency resources occupied by the first PRDCH.

[0416] As one embodiment, "the first PRDCH includes a control sub-signal and a data sub-signal" includes: the control sub-signal and the data sub-signal respectively carry the control information bits and the data information bits included in the first PRDCH.

[0417] As an example, the control sub-signal and the data sub-signal are discontinuous in the time domain.

[0418] As one embodiment, the control sub-signal and the data sub-signal are mapped to mutually orthogonal time-domain resources.

[0419] As an example, the control sub-signal carries physical layer control information.

[0420] As an example, the control sub-signal carries control information from higher layers.

[0421] As an example, the control sub-signal uses OOK.

[0422] As an example, the data sub-signal is a physical signal that transmits data information.

[0423] As an example, the data sub-signal carries control information from higher layers.

[0424] As an example, the data sub-signal does not carry higher-level control information.

[0425] As an example, the data sub-signal carries MAC layer information.

[0426] As an example, the data sub-signal carries a MAC CE.

[0427] As one embodiment, the data sub-signal carries all or part of the bits in a TB (transport block).

[0428] As an example, all or part of the bits in a TB are used to generate the data sub-signal.

[0429] As an example, all or part of the bits in a TB are channel-coded to generate the data sub-signal.

[0430] As an example, all or part of the bits in a TB are processed by adding CRC, linear encoding, and OOK modulation to generate the data sub-signal.

[0431] As an example, the data sub-signal is a signal that only includes high and low levels.

[0432] As an example, the data sub-signal uses OOK.

[0433] As one embodiment, "the control sub-signal carrying L1 control information" includes: the L1 control information resources are mapped to the resources allocated for the control sub-signal.

[0434] As one embodiment, "the control sub-signal carrying L1 control information" includes: at least one L1 control information bit is used to generate the control sub-signal.

[0435] As an example, "the control sub-signal carrying L1 control information" includes: at least one L1 control information bit being generated by at least one of CRC attachment, repetition, scrambling, line coding, and generating OOK based on OFDM to generate the control sub-signal.

[0436] As one embodiment, "the control sub-signal carrying L1 control information" includes: the control sub-signal is generated by L1 control information.

[0437] As one embodiment, "the control sub-signal carries L1 control information" includes: the control sub-signal carries only L1 control information.

[0438] As a

[0439] As one embodiment, "the control sub-signal carrying L1 control information" includes: the control sub-signal carrying at least one L1 control information bit.

[0440] As an example, "the control sub-signal carrying L1 control information" includes: the control sub-signal carrying a fixed or predefined number of L1 control information bits.

[0441] As one embodiment, "the control sub-signal carrying L1 control information" includes: the control sub-signal carrying an L1 control information format.

[0442] As an example, the control sub-signal carries the CRC generated by the L1 control information bits.

[0443] As an example, the control sub-signal does not carry the CRC generated by the L1 control information bits.

[0444] As an example, each L1 control information bit carried by the control sub-signal is a bit in the control information payload.

[0445] As an example, each L1 control information bit carried by the control sub-signal is a bit of the control information field.

[0446] As an example, each L1 control information bit carried by the control sub-signal is a bit of scheduling information.

[0447] As an example, the L1 control information bits carried by the control sub-signal are the L1 control information included in the first PRDCH in this application.

[0448] As an example, at least one L1 control information bit carried by the control sub-signal is used to schedule the data sub-signal.

[0449] As an example, at least one L1 control information bit carried by the control sub-signal is used to indicate the duration of the data sub-signal.

[0450] As an example, the L1 control information bits carried by the control sub-signal and the data information (or TB or CB) bits carried by the data sub-signal are independently attached (or have CRC added).

[0451] As one embodiment, "the data sub-signal carrying data information bits" includes: the data sub-signal is generated from data information bits.

[0452] As one embodiment, "the data sub-signal carrying data information bits" includes: the data information bit resources are mapped to resources allocated for the data sub-signal.

[0453] As an example, "the data sub-signal carrying data information bits" includes: at least one data information bit being generated by at least one of CRC attachment, repetition, scrambling, line coding, and OFDM-based OOK generation to generate the data sub-signal.

[0454] As one embodiment, "the data sub-signal carries data information bits" includes: the data sub-signal carries at least data information bits.

[0455] As one embodiment, "the data sub-signal carries data information bits" includes: the data sub-signal carries only data information bits.

[0456] As one embodiment, "the data sub-signal carries data information bits" includes: the data sub-signal carries at least one data information bit.

[0457] As one embodiment, "the data sub-signal carrying data information bits" includes: the data sub-signal includes multiple data information bits.

[0458] As one embodiment, "the data sub-signal carrying data information bits" includes: the data sub-signal carrying a first transmission block, the first transmission block including at least one data information bit.

[0459] As one embodiment, "the data sub-signal carrying data information bits" includes: the data sub-signal carrying a first transport block, the size of which depends on at least one of the time domain resources occupied by the data sub-signal and the number of OOK time units included in each OFDM symbol occupied by the data sub-signal.

[0460] As an example, the data sub-signal carries a CRC generated by data information bits.

[0461] As an example, the data sub-signal does not carry physical layer control information bits.

[0462] As an example, each data information bit carried by the data sub-signal is a bit in the data information payload.

[0463] As an example, the data sub-signal also carries a MAC SDU.

[0464] As an example, the number of data information bits carried by the data sub-signal has an upper limit.

[0465] As an example, the number of data information bits carried by the data sub-signal is predefined.

[0466] As an example, the number of data information bits carried by the data sub-signal is indicated by the control sub-signal.

[0467] As an example, the number of data information bits carried by the data sub-signal is configured by the core network.

[0468] As an example, the number of data information bits carried by the data sub-signal is indicated by NAS (Non-Access stratum).

[0469] As one embodiment, the data sub-signal carries multiple data information bits.

[0470] As an example, the time-domain resources occupied by the control sub-signal and the time-domain resources occupied by the data sub-signal are orthogonal.

[0471] As an example, the control sub-signal and the data sub-signal do not overlap in the time domain.

[0472] As an example, the time-domain resources occupied by the control sub-signal and the time-domain resources occupied by the data sub-signal do not overlap.

[0473] As an example, the control sub-signal and the data sub-signal occupy different OFDM symbols.

[0474] As one embodiment, the control sub-signal and the data sub-signal are respectively mapped to different OFDM symbol sets.

[0475] As one embodiment, the control sub-signal precedes the data sub-signal in the time domain. As a supplementary embodiment, the fact that the control sub-signal precedes the data sub-signal allows for receiving L1 control information instructions before receiving data information, providing greater flexibility and improved robustness.

[0476] As an example, "the time-domain interval length between the control sub-signal and the data sub-signal is equal to or greater than the minimum number of OFDM symbols of the first time interval" includes: the control sub-signal and the data sub-signal are discontinuous in the time domain.

[0477] As an example, "the time-domain interval length between the control sub-signal and the data sub-signal is equal to the minimum number of OFDM symbols not less than the first time interval" includes: the interval between the time-domain resources mapped by the L1 control information bits included in the first PRDCH and the data information bits included in the first PRDCH is not less than the minimum number of OFDM symbols of the first time interval.

[0478] As one embodiment, "the time-domain interval length between the control sub-signal and the data sub-signal is equal to the minimum number of OFDM symbols not less than the first time interval" includes: the OFDM symbols occupied by the control sub-signal in the time domain form a first OFDM symbol set, the OFDM symbols occupied by the data sub-signal in the time domain form a second OFDM symbol set, and the time-domain interval length between the first OFDM symbol set and the second OFDM symbol set is the minimum number of OFDM symbols not less than the first time interval.

[0479] As one embodiment, "the time-domain interval length between the control sub-signal and the data sub-signal is equal to the minimum number of OFDM symbols not less than the first time interval" includes: the L1 control information bits carried by the first PRDCH are mapped to the first OFDM symbol set, the data information bits carried by the first PRDCH are mapped to the second OFDM symbol set, and the time-domain interval length between the first OFDM symbol set and the second OFDM symbol set is the minimum number of OFDM symbols not less than the first time interval.

[0480] As an example, "the time-domain interval length between the control sub-signal and the data sub-signal is equal to the minimum number of OFDM symbols not less than the first time interval" includes: the time-domain interval length between the latest OFDM symbol mapped by the L1 control information bits included in the first PRDCH and the earliest OFDM symbol mapped by the data information bits included in the first PRDCH is equal to the minimum number of OFDM symbols not less than the first time interval.

[0481] As an example, "the time-domain interval length between the control sub-signal and the data sub-signal is equal to the minimum number of OFDM symbols not less than the first time interval" includes: the time-domain interval length between the latest OFDM symbol occupied by the control sub-signal in the time domain and the earliest OFDM symbol occupied by the data sub-signal in the time domain is not less than the minimum number of OFDM symbols of the first time interval.

[0482] As an example, "the time-domain interval length between the control sub-signal and the data sub-signal is equal to the minimum number of OFDM symbols not less than the first time interval" includes: the time-domain interval length between the start symbol of the control sub-signal and the start symbol of the data sub-signal is equal to the minimum number of OFDM symbols not less than the first time interval.

[0483] As an example, "the time-domain interval length between the control sub-signal and the data sub-signal is equal to the minimum number of OFDM symbols not less than the first time interval" includes: the time-domain interval length between the start symbol of the control sub-signal and the end symbol of the data sub-signal is equal to the minimum number of OFDM symbols not less than the first time interval.

[0484] As an example, "the time-domain interval length between the control sub-signal and the data sub-signal is equal to the minimum number of OFDM symbols not less than the first time interval" includes: the time-domain interval length between the cutoff symbol of the control sub-signal and the start sub-symbol of the data sub-signal is equal to the minimum number of OFDM symbols not less than the first time interval.

[0485] As an example, "the time-domain interval length between the control sub-signal and the data sub-signal is equal to the minimum number of OFDM symbols not less than the first time interval" includes: the time-domain interval length between the cutoff symbol of the control sub-signal and the cutoff symbol of the data sub-signal is equal to the minimum number of OFDM symbols not less than the first time interval.

[0486] As one embodiment, "the time-domain interval length between the control sub-signal and the data sub-signal is equal to or greater than the minimum number of OFDM symbols of the first time interval" includes: the time-domain interval length between the control sub-signal and the data sub-signal is greater than or equal to the minimum number of OFDM symbols of the first time interval.

[0487] As an example, "the time-domain interval length between the control sub-signal and the data sub-signal is equal to or greater than the minimum number of OFDM symbols of the first time interval" includes: the time-domain interval length between the control sub-signal and the data sub-signal is greater than the minimum number of OFDM symbols of the first time interval.

[0488] As one embodiment, "the time-domain interval length between the control sub-signal and the data sub-signal is equal to the minimum number of OFDM symbols not less than the first time interval" includes: the time-domain interval length between the control sub-signal and the data sub-signal is at least one OFDM symbol.

[0489] As an example, "the time-domain interval length between the control sub-signal and the data sub-signal is equal to the minimum number of OFDM symbols not less than the first time interval" includes: the time-domain interval between the control sub-signal and the data sub-signal is multiple OFDM symbols.

[0490] As an example, "the time-domain interval length between the control sub-signal and the data sub-signal is equal to the minimum number of OFDM symbols not less than the first time interval" includes: the cutoff boundary of the control sub-signal and the start boundary of the data sub-signal are both aligned with the boundary of the OFDM symbol.

[0491] As one embodiment, "the time-domain interval length between the control sub-signal and the data sub-signal is equal to the minimum number of OFDM symbols not less than the first time interval" includes: the number of OFDM symbols in the time-domain interval between the control sub-signal and the data sub-signal is not less than the minimum number of OFDM symbols in the first time interval.

[0492] As an example, "the time-domain interval length between the control sub-signal and the data sub-signal is equal to the minimum number of OFDM symbols not less than the first time interval" includes: the time-domain interval length between the control sub-signal and the data sub-signal is X OFDM symbols, where X is the minimum number of OFDM symbols not less than the first time interval.

[0493] As one embodiment, "the time-domain interval length between the control sub-signal and the data sub-signal is equal to or greater than the minimum number of OFDM symbols of the first time interval" includes: the time-domain interval length between the control sub-signal and the data sub-signal is X OFDM symbols, wherein, in T represents rounding up, T is the first time interval, and T2 represents the duration of an OFDM symbol.

[0494] As one embodiment, "the time-domain interval length between the control sub-signal and the data sub-signal is equal to or greater than the minimum number of OFDM symbols of the first time interval" includes: the time-domain interval length between the control sub-signal and the data sub-signal is X OFDM symbols, wherein, in Indicates rounding up, X1 is the number of OOK time units equal to the first time interval, and T2 represents the number of OOK time units included in an OFDM symbol.

[0495] As an example, "the time-domain interval length between the control sub-signal and the data sub-signal is equal to the minimum number of OFDM symbols not less than the first time interval" includes: the data information bits included in the first PRDCH are mapped to the first OFDM symbol after the control sub-signal for a period not less than the first time interval.

[0496] As an example, "the time-domain interval length between the control sub-signal and the data sub-signal is equal to the minimum number of OFDM symbols not less than the first time interval" includes: the first symbol occupied by the data sub-signal in the time domain is the first OFDM symbol not less than the first time interval after the latest symbol occupied by the control sub-signal in the time domain.

[0497] As one embodiment, "the time-domain interval length between the control sub-signal and the data sub-signal is equal to the minimum number of OFDM symbols not less than the first time interval" includes: the terminal in this application transmits the data sub-signal on the first OFDM symbol after transmitting the control sub-signal at an interval not less than the first time interval.

[0498] As one embodiment, "the first time interval is equal to absolute time or equal to multiple OOK time units" includes: the first time interval is equal to absolute time.

[0499] As one embodiment, "the first time interval is equal to an absolute time or equal to a plurality of OOK time units" includes: the first time interval is equal to an absolute time.

[0500] As one embodiment, "the first time interval is equal to absolute time or equal to multiple OOK time units" includes: the first time interval is expressed in absolute time.

[0501] As one embodiment, "the first time interval is equal to absolute time or equal to a plurality of OOK time units" includes: the first time interval is expressed as the length of absolute time.

[0502] As one embodiment, "the first time interval is equal to absolute time or equal to multiple OOK time units" includes: the first time interval is equal to multiple OOK time units.

[0503] As one embodiment, "the first time interval is equal to an absolute time or equal to a plurality of OOK time units" includes: the first time interval is an integer number of OOK time units.

[0504] As an example, the unit of the first time interval is seconds.

[0505] As an example, the unit of the first time interval is milliseconds.

[0506] As an example, the unit of the first time interval is microseconds.

[0507] As an example, the first time interval is represented by the number of OOK time units.

[0508] As an example, the value of the first time interval is a non-negative integer.

[0509] As an example, the first time interval includes the processing delay of the IoT device described in this application.

[0510] As one example, the first time interval includes the user's processing latency.

[0511] As one embodiment, the first time interval includes the device's processing latency.

[0512] As one example, the first time interval includes the processing latency of the Ambient IoT device.

[0513] As one embodiment, the first time interval includes the time for decoding L1 control information.

[0514] As one embodiment, the first time interval includes the time for applying the L1 control information to include the configuration.

[0515] As one embodiment, the first time interval includes the time required to convert the number of OOK time units included in an OFDM symbol.

[0516] As one embodiment, the first time interval includes the time during which the number of OOK time units included in an OFDM symbol is changed.

[0517] As one embodiment, the first time interval includes a guard interval between the control sub-signal and the data sub-signal.

[0518] As an example, the first time interval is an offset.

[0519] As an example, the first time interval is a predefined absolute time.

[0520] As an example, the first time interval is a predefined number of OOK time units.

[0521] As an example, the first time interval is a fixed value.

[0522] As an example, the first time interval is a fixed number of OOK time units.

[0523] As an example, the first time interval is hard-coded in the standard.

[0524] As an example, the first time interval depends on the type of IoT device described in this application.

[0525] As an example, different types of IoT devices have different first time intervals.

[0526] As one example, the first time interval is per device type.

[0527] As an example, the first time interval is the number of OOK time units.

[0528] As one example, the first time interval depends on the indication of dynamic signaling.

[0529] As one example, the first time interval depends on the configuration.

[0530] As one embodiment, the first time interval is related to the device's processing power.

[0531] As one example, the first time interval is related to the processing capability of the A-IoT device.

[0532] As an example, the first time interval depends on the number of OOK time units included in one OFDM symbol occupied by the first PRDCH in the time domain.

[0533] As an example, the first time interval depends on the number of OOK time units included in one OFDM symbol occupied by the data sub-signal in the time domain.

[0534] As an example, the first time interval depends on the number of OOK time units included in one OFDM symbol occupied by the control sub-signal in the time domain.

[0535] As an example, the first time interval is equal to a plurality of OOK time units, and the number of OOK time units equal to the first time interval depends on the number of OOK time units included in one OFDM symbol occupied by the first PRDCH in the time domain.

[0536] As an example, the first time interval is equal to an absolute time, and the value of the first time interval depends on the number of OOK time units included in one OFDM symbol occupied by the first PRDCH in the time domain.

[0537] As an example, the first time interval is equal to an absolute time, and the value of the first time interval has a corresponding or mapping relationship with the number of OOK time units included in one OFDM symbol occupied by the first PRDCH in the time domain.

[0538] As an example, the first time interval depends on the subcarrier spacing of the OFDM symbols occupied by the first PRDCH in the time domain.

[0539] As an example, the first time interval depends on the duration of the OFDM symbol occupied by the first PRDCH in the time domain.

[0540] As an example, the first time interval depends on the sampling rate for the first PRDCH.

[0541] As an example, the first time interval depends on the number of points of the FFT for the first PRDCH.

[0542] As one example, the first time interval depends on the number of subcarriers occupied by the first PRDCH in the frequency domain.

[0543] Example 11

[0544] Example 11 illustrates a schematic diagram of a target power value according to an embodiment of this application, as shown in FIG11. In FIG11, the vertical axis represents power, and the rectangle filled with diagonal lines represents the target power value, which is equal to the smaller of a first upper limit value and a first power value.

[0545] In embodiment 11, the target power value is equal to the transmit power value of the first PRDCH in this application, and the target power value is equal to the smaller of the first upper limit value and the first power value; at least one of the first upper limit value or the first power value depends on the number of OOK time units included in one OFDM symbol occupied by the first PRDCH in the time domain.

[0546] As an example, the maximum output power value or the actual output power value is obtained based on the number of OOK (On-Off Keying) time units or chips in the OFDM symbol or the number of OOK bits that can be transmitted. The impact of different OOK configurations on RF devices or interference states is taken into account, and the transmit power when using OOK transmission is optimized, thereby improving performance while reducing implementation complexity.

[0547] As an example, the unit of the target power value is dBm.

[0548] As an example, the unit of the target power value is watts or milliwatts.

[0549] As an example, the target power value is equal to the transmission occasion in the time domain to which the first PRDCH belongs and the transmission power in the uplink BWP in the frequency domain to which the first PRDCH belongs.

[0550] As an example, the target power value is the transmit power value of the first PRDCH at the antenna connector.

[0551] As an example, the target power value is the baseband transmit power value of the first PRDCH.

[0552] As an example, the target power value is the transmit power value of the first PRDCH at radio frequency.

[0553] As an example, the target power value does not include antenna gain.

[0554] As an example, the target power value includes the antenna gain.

[0555] As an example, the target power value is equal to P. PRDCH,b,f,c (i,j,q d The value of l).

[0556] As an example, the target power value is equal to the average power of the OOK used by the first PRDCH at all constellation points.

[0557] As an example, the target power value is equal to the average of the high-level power and low-level power of the OOK used by the first PRDCH.

[0558] As an example, the target power value is equal to half of the high-level power of OOK used by the first PRDCH.

[0559] As an example, the target power value is equal to the normalized transmit power value of the first PRDCH.

[0560] As an example, the target power value is equal to the average level energy of all levels in the OOK used by the first PRDCH.

[0561] As an example, the first upper limit value is the P corresponding to the first PRDCH. CMAX,f,c The value of (i).

[0562] As an example, the first upper limit value is equal to the P corresponding to the first PRDCH. CMAX,f,cThe sum or difference between the value of (i) and an offset value.

[0563] As an example, the first upper limit is the configured maximum output power of the sender of the first PRDCH.

[0564] As an example, the first upper limit value is equal to the sum or difference between the maximum output power configured by the sender of the first PRDCH and an offset value.

[0565] As an example, the first upper limit value is equal to the configured maximum output power value for the first PRDCH.

[0566] As an example, the first upper limit value is equal to the sum or difference between the configured maximum output power value for the first PRDCH and an offset value.

[0567] As an example, the first upper limit is the maximum output power of the transmitter of the first PRDCH in the R2D configuration.

[0568] As an example, the first upper limit is the maximum configured output power of the sender of the first PRDCH in the carrier occupied by the serving cell to which the first PRDCH belongs and in the transmission opportunity to which the first PRDCH belongs in the time domain.

[0569] As an example, the first upper limit value is a power value related to the radio frequency characteristics of the transmitter of the first PRDCH when transmitting the first PRDCH.

[0570] As an example, the first power value is equal to the transmit power value of the first PRDCH when the transmit power does not exceed the first upper limit value.

[0571] As an example, the first power value is equal to the transmit power value obtained by the power control of the first PRDCH.

[0572] As an example, the first power value is equal to the transmit power value obtained by power control of a virtual (or reference) uplink signal.

[0573] As an example, the first power value is equal to the transmit power value obtained by power control of the virtual uplink signal corresponding to the first PRDCH.

[0574] As an example, the first power value is equal to the transmit power value of the first PRDCH derived based on the path loss used for uplink power control.

[0575] As an example, the first power value is the transmit power value calculated by open-loop power control when transmitting the first PRDCH.

[0576] As an example, the first power value is a transmit power value related to the downlink path loss (PL) of the transmitter of the first PRDCH.

[0577] As an example, the first power value is equal to the P corresponding to the first PRDCH. O_PRDCH The value of the first PRDCH, the value corresponding to The value of α corresponding to the first PRDCH PRDCH ·PL PRDCH The sum of the values, where PRDCH represents the first PRDCH. P represents the number of RBs included in the first PRDCH in the frequency domain, μ represents the subcarrier spacing of the subcarriers included in the first PRDCH in the frequency domain, and P O_PRDCH and α PRDCH Represents the values ​​configured separately, PL PRDCH This represents path loss.

[0578] As an example, the first power value is equal to the P corresponding to the first PRDCH. O_PRDCH,b,f,c The value of (j), the first PRDCH corresponding to The value of α corresponding to the first PRDCH b,f,c (j)·PL b,f,c (q d The sum of the values ​​of ), where PRDCH represents the first PRDCH. P represents the number of RBs included in the first PRDCH in the frequency domain, μ represents the subcarrier spacing of the subcarriers included in the first PRDCH in the frequency domain, and P O_PRDCH,b,f,c (j) and α b,f,c (j) represents the separately configured values, PL b,f,c (q d ) represents path loss.

[0579] As an example, the unit of the first upper limit value is dBm, and the unit of the first power value is dBm.

[0580] As an example, the unit of the first upper limit value is watt or milliwatt, and the unit of the first power value is watt or milliwatt.

[0581] As an example, the units of the first upper limit value, the first power value, and the transmit power of the first PRDCH are all the same.

[0582] As an example, the first information block in this application is configured with at least one parameter for calculating at least one of the first upper limit value or the first power value.

[0583] As an example, the technical feature "the target power value is equal to the smaller value between the first upper limit value and the first power value" includes the following meanings: when the first upper limit value is greater than the first power value, the target power value is equal to the first power value; when the first upper limit value is less than the first power value, the target power value is equal to the first upper limit value; when the first upper limit value is equal to the first power value, the target power value is equal to the first upper limit value or the first power value.

[0584] As an example, the technical feature "the target power value is equal to the smaller value between the first upper limit value and the first power value" includes the following meaning: the target power value is equal to the result of taking the smaller value (min) between the first upper limit value and the first power value.

[0585] As one embodiment, "at least one of the first upper limit value or the first power value depends on the number of OOK time units included in one OFDM symbol occupied by the first PRDCH in the time domain" includes: both the first upper limit value and the first power value depend on the number of OOK time units included in one OFDM symbol occupied by the first PRDCH in the time domain.

[0586] As one embodiment, "at least one of the first upper limit value or the first power value depends on the number of OOK time units included in one OFDM symbol occupied by the first PRDCH in the time domain" includes: at least one of the first upper limit value or the first power value depends on the number of bits carried by the first PRDCH in one OFDM symbol occupied by the first PRDCH in the time domain.

[0587] As one embodiment, "at least one of the first upper limit value or the first power value depends on the number of OOK time units included in one OFDM symbol occupied by the first PRDCH in the time domain" includes: at least one of the first upper limit value or the first power value depends on the number of information bits carried by the first PRDCH in one OFDM symbol occupied by the first PRDCH in the time domain.

[0588] As one embodiment, "at least one of the first upper limit value or the first power value depends on the number of OOK time units included in one OFDM symbol occupied by the first PRDCH in the time domain" includes: at least one of the first upper limit value or the first power value depends on the number of Manchester-coded bits carried by the first PRDCH in one OFDM symbol occupied by the first PRDCH in the time domain.

[0589] As one embodiment, "at least one of the first upper limit value or the first power value depends on the number of OOK time units included in one OFDM symbol occupied by the first PRDCH in the time domain" includes: at least one of the first upper limit value or the first power value depends on the time length of at least one OOK time unit included in one OFDM symbol occupied by the first PRDCH in the time domain.

[0590] As one embodiment, "at least one of the first upper limit value or the first power value depends on the number of OOK time units included in one OFDM symbol occupied by the first PRDCH in the time domain" includes: the first upper limit value depends on the number of OOK time units included in one OFDM symbol occupied by the first PRDCH in the time domain.

[0591] As one embodiment, "at least one of the first upper limit value or the first power value depends on the number of OOK time units included in one OFDM symbol occupied by the first PRDCH in the time domain" includes: the first power value depends on the number of OOK time units included in one OFDM symbol occupied by the first PRDCH in the time domain.

[0592] As one embodiment, "at least one of the first upper limit value or the first power value depends on the number of OOK time units included in one OFDM symbol occupied by the first PRDCH in the time domain" includes: calculating (or setting or configuring) the value of at least one parameter of the first power value depends on the number of OOK time units included in one OFDM symbol occupied by the first PRDCH in the time domain.

[0593] As one embodiment, "at least one of the first upper limit value or the first power value depends on the number of OOK time units included in one OFDM symbol occupied by the first PRDCH in the time domain" includes: calculating (or setting or configuring) the value of at least one parameter of the first upper limit value depends on the number of OOK time units included in one OFDM symbol occupied by the first PRDCH in the time domain.

[0594] As one embodiment, "at least one of the first upper limit value or the first power value depends on the number of OOK time units included in one OFDM symbol occupied by the first PRDCH in the time domain" includes: the value of at least one parameter included in the first power value depends on the number of OOK time units included in one OFDM symbol occupied by the first PRDCH in the time domain.

[0595] As one embodiment, "at least one of the first upper limit value or the first power value depends on the number of OOK time units included in one OFDM symbol occupied by the first PRDCH in the time domain" includes: the value of at least one parameter included in the first upper limit value depends on the number of OOK time units included in one OFDM symbol occupied by the first PRDCH in the time domain.

[0596] As one embodiment, "at least one of the first upper limit value or the first power value depends on the number of OOK time units included in one OFDM symbol occupied by the first PRDCH in the time domain" includes: at least one of the first upper limit value or the first power value is related to the number of OOK time units included in one OFDM symbol occupied by the first PRDCH in the time domain.

[0597] As one embodiment, "at least one of the first upper limit value or the first power value depends on the number of OOK time units included in one OFDM symbol occupied by the first PRDCH in the time domain" includes: the number of OOK time units included in one OFDM symbol occupied by the first PRDCH in the time domain is used to determine (or calculate) at least one of the first upper limit value or the first power value.

[0598] As one embodiment, "at least one of the first upper limit value or the first power value depends on the number of OOK time units included in one OFDM symbol occupied by the first PRDCH in the time domain" includes: the first power value depends on the frequency domain bandwidth of the first PRDCH; the frequency bandwidth of the first PRDCH is related to the number of OOK time units included in one OFDM symbol occupied by the first PRDCH in the time domain.

[0599] As one embodiment, "at least one of the first upper limit value or the first power value depends on the number of OOK time units included in one OFDM symbol occupied by the first PRDCH in the time domain" includes: the MPR (maximum power reduction) value for the first upper limit value depends on the number of OOK time units included in one OFDM symbol occupied by the first PRDCH in the time domain. As a supplementary embodiment of the above embodiment, associating the MPR value with the number of OOK time units takes into account the peak-to-average power ratio characteristics of OOK, thus ensuring transmission efficiency.

[0600] As one embodiment, "at least one of the first upper limit value or the first power value depends on the number of OOK time units included in one OFDM symbol occupied by the first PRDCH in the time domain" includes: the A-MPR (additional maximum power reduction) value for the first upper limit value depends on the number of OOK time units included in one OFDM symbol occupied by the first PRDCH in the time domain. As a supplementary embodiment of the above embodiment, associating the A-MPR value with the number of OOK time units takes into account the special impact of OOK on power, and does not change the existing MPR setting, thus ensuring transmission efficiency while optimizing overall performance.

[0601] As one embodiment, "at least one of the first upper limit value or the first power value depends on the number of OOK time units included in one OFDM symbol occupied by the first PRDCH in the time domain" includes: the P-MPR (power management maximum power reduction) value for the first upper limit value depends on the number of OOK time units included in one OFDM symbol occupied by the first PRDCH in the time domain. As a supplementary embodiment of the above embodiment, associating the P-MPR value with the number of OOK time units takes into account the impact of OOK on power in the overall power management, simplifying the design while ensuring implementation flexibility.

[0602] As one embodiment, "at least one of the first upper limit value or the first power value depends on the number of OOK time units included in one OFDM symbol occupied by the first PRDCH in the time domain" includes: the value of a parameter other than MPR, A-MPR, or P-MPR for the first upper limit value depends on the number of OOK time units included in one OFDM symbol occupied by the first PRDCH in the time domain. As a supplementary embodiment to the above embodiment, associating the value of a parameter other than MPR, A-MPR, or P-MPR with the number of OOK time units takes into account the specific impact of OOK on power while providing maximum flexibility.

[0603] As one embodiment, "at least one of the first upper limit value or the first power value depends on the number of OOK time units included in one OFDM symbol occupied by the first PRDCH in the time domain" includes: ΔT for the first upper limit value C，c The value depends on the number of OOK time units included in one OFDM symbol occupied by the first PRDCH in the time domain. As a supplementary embodiment to the above example, ΔT... C,c The value is related to the number of OOK time units, taking the impact of OOK on power into the tolerance limit, thus reducing the impact on the standard.

[0604] As one embodiment, "at least one of the first upper limit value or the first power value depends on the number of OOK time units included in one OFDM symbol occupied by the first PRDCH in the time domain" includes: ΔP for the first upper limit value PowerClass The value depends on the number of OOK time units included in one OFDM symbol occupied by the first PRDCH in the time domain. As a supplementary embodiment to the above embodiment, ΔP... PowerClass The value is associated with the number of OOK time units, thereby taking into account the characteristics of OOK in the time domain in the power level setting (or power enhancement) to improve transmission performance.

[0605] As one embodiment, "at least one of the first upper limit value or the first power value depends on the number of OOK time units included in one OFDM symbol occupied by the first PRDCH in the time domain" includes: the value of the first upper limit value or a parameter of the first upper limit value is linearly related to the number of OOK time units included in one OFDM symbol occupied by the first PRDCH in the time domain.

[0606] As one embodiment, "at least one of the first upper limit value or the first power value depends on the number of OOK time units included in one OFDM symbol occupied by the first PRDCH in the time domain" includes: the value of the first upper limit value or a parameter of the first upper limit value is linearly related to the logarithm of the number of OOK time units included in one OFDM symbol occupied by the first PRDCH in the time domain.

[0607] As one embodiment, "at least one of the first upper limit value or the first power value depends on the number of OOK time units included in one OFDM symbol occupied by the first PRDCH in the time domain" includes: the value of the first upper limit value or a parameter of the first upper limit value and the number of OOK time units included in one OFDM symbol occupied by the first PRDCH in the time domain have a tabular correspondence.

[0608] As one embodiment, "at least one of the first upper limit value or the first power value depends on the number of OOK time units included in one OFDM symbol occupied by the first PRDCH in the time domain" includes: the value of the first upper limit value or a parameter of the first upper limit value is proportional to the number of OOK time units included in one OFDM symbol occupied by the first PRDCH in the time domain.

[0609] As one embodiment, "at least one of the first upper limit value or the first power value depends on the number of OOK time units included in one OFDM symbol occupied by the first PRDCH in the time domain" includes: the value of the first power value or a parameter of the first power value is linearly related to the number of OOK time units included in one OFDM symbol occupied by the first PRDCH in the time domain.

[0610] As one embodiment, "at least one of the first upper limit value or the first power value depends on the number of OOK time units included in one OFDM symbol occupied by the first PRDCH in the time domain" includes: the first power value or the value of a parameter for the first power value and the number of OOK time units included in one OFDM symbol occupied by the first PRDCH in the time domain have a tabular correspondence.

[0611] As one embodiment, "at least one of the first upper limit value or the first power value depends on the number of OOK time units included in one OFDM symbol occupied by the first PRDCH in the time domain" includes: the value of the first power value or a parameter for the first power value is linearly related to the logarithm of the number of OOK time units included in one OFDM symbol occupied by the first PRDCH in the time domain.

[0612] As one embodiment, "at least one of the first upper limit value or the first power value depends on the number of OOK time units included in one OFDM symbol occupied by the first PRDCH in the time domain" includes: the first power value or the value of a parameter for the first power value is proportional to the logarithm of the number of OOK time units included in one OFDM symbol occupied by the first PRDCH in the time domain.

[0613] As one embodiment, "at least one of the first upper limit value or the first power value depends on the number of OOK time units included in one OFDM symbol occupied by the first PRDCH in the time domain" includes: for the first power value The value depends on the number of OOK time units included in one OFDM symbol occupied by the first PRDCH in the time domain, where This represents the number of RBs occupied or mapped by the first PRDCH.

[0614] As one embodiment, the first upper limit value depends on a first parameter value, which is a parameter value obtained assuming the first PRDCH uses DFT-s-OFDM. The first parameter value depends on the number of OOK time units included in one OFDM symbol occupied by the first PRDCH in the time domain. As a supplementary embodiment of the above embodiment, the first parameter value is the MPR value. As a supplementary embodiment of the above embodiment, the first parameter value is the A-MPR value. As a supplementary embodiment of the above embodiment, the first parameter value is the P-MPR value.

[0615] Example 12

[0616] Example 12 illustrates a structural block diagram of a processing device in a terminal according to an embodiment, as shown in FIG12. In FIG12, the processing device 1200 in the terminal includes a first transmitter 1201. The first transmitter 1201 includes a transmitter / receiver 416 (including antenna 420) as shown in FIG4 of this application, a transmission processor 415, and a controller / processor 440; the first receiver 1202 includes a transmitter / receiver 416 (including antenna 420) as shown in FIG4 of this application, a reception processor 412, and a controller / processor 440.

[0617] In embodiment 12, the first transmitter 1201 transmits a first PRDCH, which uses OOK; wherein, the first PRDCH includes L1 control information, and the candidate formats of the L1 control information included in the first PRDCH include at least a first format and a second format. The first format and the second format are respectively for different device types of the receivers of the first PRDCH. The number of control information bits included in the first format and the number of control information bits included in the second format are different. Of the first format and the second format, only the L1 control information of the second format includes device type information.

[0618] As an example, the device type includes at least one of type 1, type 2a, and type 2b. The IoT device of type 1 monitors the number of control information bits corresponding to the first format, and at least one of the IoT devices of type 2a or type 2b monitors the number of control information bits corresponding to the first format and the number of control information bits corresponding to the second format.

[0619] As an example, the L1 control information included in the first PRDCH adopts the second format, and a field included in the L1 control information included in the first PRDCH indicates a transmission mode, which includes at least one of unicast, multicast, or broadcast; when the transmission mode is indicated as multicast, at least one field included in the L1 control information included in the first PRDCH indicates the group identifier of the multicast.

[0620] As an example, the L1 control information included in the first PRDCH adopts the first format, and at least one MAC layer field carried by the first PRDCH indicates the device type of the receiver of the first PRDCH.

[0621] As an example, the first receiver 1202 receives a first PDRCH; when the L1 control information included in the first PDRCH adopts the first format, a field of the MAC layer included in the first PDRCH indicates the number of chips occupied by the first PDRCH; when the L1 control information included in the first PDRCH adopts the second format, a field of the L1 control information included in the first PDRCH indicates the number of chips occupied by the first PDRCH, wherein the chips include at least one of OOK time units and BPSK time units.

[0622] As an example, the first PRDCH includes a data sub-signal and a control sub-signal. The control sub-signal carries L1 control information, and the data sub-signal carries data information bits. The time-domain interval length between the control sub-signal and the data sub-signal is equal to or greater than the minimum number of OFDM symbols of a first time interval, which is equal to an absolute time or equal to multiple OOK time units.

[0623] As an example, the target power value is equal to the transmit power value of the first PRDCH, and the target power value is equal to the smaller of the first upper limit value and the first power value; at least one of the first upper limit value or the first power value depends on the number of OOK time units included in one OFDM symbol occupied by the first PRDCH in the time domain.

[0624] Example 13

[0625] Example 13 illustrates a structural block diagram of a processing device for an Internet of Things (IoT) device, as shown in FIG13. In FIG13, the processing device 1300 in the IoT device includes a second receiver 1301. The second receiver 1301 includes a receive-related module 1409, a BB (Baseband) logic 1413, a memory 1418, and a clock generator 1419, as shown in FIG14 of this application; the second transmitter 1302 includes a transmit-related module 1417, as shown in FIG14 of this application.

[0626] In embodiment 13, the second receiver 1301 receives a first PRDCH, which adopts OOK; wherein, the first PRDCH includes L1 control information, and the candidate formats of the L1 control information included in the first PRDCH include at least a first format and a second format. The first format and the second format are respectively for different device types of the IoT devices. The number of control information bits included in the first format and the number of control information bits included in the second format are different. Of the first format and the second format, only the L1 control information of the second format includes device type information.

[0627] As an example, the device type includes at least one of type 1, type 2a, and type 2b. The IoT device of type 1 monitors the number of control information bits corresponding to the first format, and at least one of the IoT devices of type 2a or type 2b monitors the number of control information bits corresponding to the first format and the number of control information bits corresponding to the second format.

[0628] As an example, the L1 control information included in the first PRDCH adopts the second format, and a field included in the L1 control information included in the first PRDCH indicates a transmission mode, which includes at least one of unicast, multicast, or broadcast; when the transmission mode is indicated as multicast, at least one field included in the L1 control information included in the first PRDCH indicates the group identifier of the multicast.

[0629] As an example, the L1 control information included in the first PRDCH adopts the first format, and at least one MAC layer field carried by the first PRDCH indicates the device type of the Internet of Things device.

[0630] As an example, the second transmitter 1302 transmits a first PDRCH; wherein, when the L1 control information included in the first PDRCH adopts the first format, a field of the MAC layer included in the first PDRCH indicates the number of chips occupied by the first PDRCH; when the L1 control information included in the first PDRCH adopts the second format, a field of the L1 control information included in the first PDRCH indicates the number of chips occupied by the first PDRCH, wherein the chips include at least one of OOK time units and BPSK time units.

[0631] As an example, the first PRDCH includes a data sub-signal and a control sub-signal. The control sub-signal carries L1 control information, and the data sub-signal carries data information bits. The time-domain interval length between the control sub-signal and the data sub-signal is equal to or greater than the minimum number of OFDM symbols of a first time interval, which is equal to an absolute time or equal to multiple OOK time units.

[0632] As an example, the target power value is equal to the transmit power value of the first PRDCH, and the target power value is equal to the smaller of the first upper limit value and the first power value; at least one of the first upper limit value or the first power value depends on the number of OOK time units included in one OFDM symbol occupied by the first PRDCH in the time domain.

[0633] Example 14

[0634] Example 14 illustrates a schematic diagram of the structure of an A-IoT device according to an embodiment of this application, as shown in FIG14.

[0635] In Figure 14, the A-IoT device 1400 includes an antenna 1401, an energy-related module 1404, and a processing-related module 1408. The A-IoT device 1400 may also include a matching network 1402 for matching the impedance between the antenna 1401 and other components, including a radio frequency (RF) energy harvester 1403 and a receiver-related module 1409. The A-IoT device 1400 may also include an energy harvester, which can be either an RF energy harvester 1403 or a non-RF energy harvester 1407. The RF energy harvester 1403 may include a rectifier that performs RF signal (AC) to DC conversion. The RF energy harvester 1403 and the receiver / transmitter may share the antenna 1401, or they may use separate antennas. The energy-related module 1404 may include a power management unit (PMU) 1405; the PMU 1405 is responsible for storing energy from the energy harvester in energy storage 1406 and supplying power to active component blocks that require power. The energy-related module 1404 may also include energy storage 1406; the energy storage 1406 stores energy collected from the energy harvester, and the energy storage 1406 may be a capacitor. The processing module 1408 may include a BB (Baseband) logic 1413, a memory 1418, and a clock generator 1419. The BB logic 1413 may include a decoder 1414, a controller 1415, and an encoder 1416. The memory 1418 may include two types: non-volatile memory (NVM), such as EEPROM, for permanent storage of the device ID; and a register for temporarily storing information needed for operation only when energy in the energy storage 1406 is available. The clock generator 1419 provides the required clock signal. The processing module 1408 may also include reception-related blocks 1409 and transmission-related blocks 1417. For different A-IoT devices, the reception-related block 1409 and the transmission-related block 1417 may include different modules.

[0636] As an example, for an A-IoT device 1400 with a peak power consumption of approximately 1 μW, the receive correlation module 1409 may include an RF BPF 1410, an RF envelope detector (RF-ED), a BB LPF 1411, and a comparator 1412. The transmit correlation module 1417 may include a backscatter modulator.

[0637] As a non-limiting embodiment, the output of the matching network 1402 is processed sequentially by the RF BPF 1410, the RF envelope detector, the BB LPF 1411, and the comparator 1412 before being input to the BB logic 1413. The output of the BB logic 1413 is processed by the backscatter modulator and then transmitted by the antenna 1401.

[0638] As an example, for an A-IoT device 1400 with peak power consumption less than or equal to several hundred μW, if an external carrier wave is used, the receive-related module 1409 may include an RF BPF 1410, an LNA (Low-noise amplifier), an RF envelope detector, a BB amplifier, a BB LPF 1411, and a comparator / N-bit ADC 1412. The transmit-related module 1417 may include a large frequency shifter (e.g., tens of megahertz), a backscatter modulator, and a reflection amplifier. At least one of R2D (Reader to device) / CW2D (Carrier-wave, or carrier-wave node, to device) and D2R (Device to reader) can be amplified by the reflection amplifier or the LNA. The large frequency shifter shifts the backscattered signal from one frequency (e.g., an FDD-DL frequency) to another frequency (e.g., an FDD-UL frequency).

[0639] As a non-limiting embodiment, the output of the matching network 1402 is processed sequentially through an RF BPF 1410, an LNA, an RF envelope detector, a BB amplifier, a BB LPF 1411, and a comparator / N-bit ADC 1412 before being input to the BB logic 1413. The output of the BB logic 1413 is then processed by a large frequency shifter, a backscatter modulator, and a reflection amplifier before being transmitted by the antenna 1401.

[0640] As an example, for an A-IoT device 1400 with peak power consumption less than or equal to several hundred μW, if an internally generated carrier wave is used and an RF envelope detector receiver is employed, the receive-related module 1409 may include an RF BPF 1410, an LNA, an RF envelope detector, a BB amplifier, a BB LPF 1411, and a comparator / N-bit ADC 1412. The transmit-related module 1417 may include a transmit modulator (Tx modulator), a digital-to-analog converter (DAC), a low-pass filter, a mixer, a local oscillator (LO) / FLL ( / PLL), and a power amplifier (PA).

[0641] As a non-limiting embodiment, the output of the matching network 1402 is processed sequentially through an RF BPF 1410, an LNA, an RF envelope detector, a BB amplifier, a BB LPF 1411, and a comparator / N-bit ADC 1412 before being input to the BB logic 1413. The output of the BB logic 1413 is then processed by a transmit modulator, a digital-to-analog converter, a low-pass filter, a mixer, a LO / FLL ( / PLL), and a power amplifier before being transmitted by the antenna 1401.

[0642] As an example, for an A-IoT device 1400 with peak power consumption less than or equal to several hundred μW, if an internally generated carrier wave is used and an intermediate frequency envelope detector (IF) receiver is employed, the receive-related module 1409 may include an RF BPF 1410, an LNA, a mixer, an IF amplifier, an IF filter, an IF envelope detector (IF-ED), a BB amplifier, a BB LPF 1411, and a comparator / N-bit ADC 1412. The transmit-related module 1417 may include a transmit modulator, a digital-to-analog converter, a low-pass filter, a mixer, a LO / FLL ( / PLL), and a power amplifier. The IF amplifier amplifies the IF signal. The IF filter filters unwanted RF and LO signals. The IF envelope detector detects the envelope from the IF signal. The mixer in the receive-related module 1409 down-converts the RF signal to the IF stage. Depending on the implementation, there can be one or two mixers for both the transmitter and receiver.

[0643] As a non-limiting embodiment, the output of the matching network 1402 is processed sequentially through an RF BPF 1410, an LNA, a mixer, an IF amplifier, an IF filter, an IF envelope detector, a BB amplifier, a BB LPF 1411, and a comparator / N-bit ADC 1412 before being input to the BB logic 1413. The output of the BB logic 1413 is processed by a transmit modulator, a digital-to-analog converter, a low-pass filter, a mixer, a LO / FLL ( / PLL), and a power amplifier before being transmitted by the antenna 1401.

[0644] As an example, for an A-IoT device 1400 with peak power consumption less than or equal to several hundred μW, if an internally-generated carrier wave is used and a zero-IF (ZIF) receiver is employed, the receive-related module 1409 may include an RF BPF 1410, an LNA, a mixer, a BB amplifier, a BB LPF 1411, and a comparator / N-bit ADC 1412. The transmit-related module 1417 may include a transmit modulator, a digital-to-analog converter, a low-pass filter, a mixer, a LO / FLL ( / PLL), and a power amplifier. The mixer in the receive-related module 1409 down-converts the RF signal to the BB stage. Depending on the implementation, there may be one or two mixers for both the transmitter and receiver.

[0645] As a non-limiting embodiment, the output of the matching network 1402 is processed sequentially through an RF BPF 1410, an LNA, a mixer, a BB amplifier, a BB LPF 1411, and a comparator / N-bit ADC 1412 before being input to the BB logic 1413. The output of the BB logic 1413 is processed by a transmit modulator, a digital-to-analog converter, a low-pass filter, a mixer, a LO / FLL ( / PLL), and a power amplifier before being transmitted by the antenna 1401.

[0646] In the above embodiments, the RF BPF 1410 is used to enhance selectivity; depending on the implementation, the RF BPF 1410 may not be present. The BB LPF 1411 is used to filter out harmonics and high-frequency components, improving the input signal quality of the comparator / ADC 1412; depending on the implementation, the BB LPF 1411 may not be present. The comparator 1412 is used to detect the high / low of the input signal. The backscatter modulator is used to convert the impedance into a modulated backscatter signal carrying the transmit signal from the BB logic 1413. The LNA is used to improve signal strength and receiver sensitivity. The RF envelope detector is used to detect the envelope from the RF signal. The BB amplifier is used to amplify the signal to improve signal strength. The transmit modulator is used to modulate the baseband bits according to the modulation scheme; the transmit modulator may be part of the BB logic 1413. The digital-to-analog converter is used to convert the digital signal to an analog signal. The low-pass filter is used to filter out unwanted signals. The mixer in the transmit correlation module 1417 is used to upconvert the baseband signal to the RF range. The LO (Local Optical Array) is used to generate the carrier frequency; the FLL ( / PLL) can be used for frequency synthesis, and depending on the implementation, the FLL ( / PLL) may not be present. The power amplifier is used to amplify the transmitted signal.

[0647] As an example, the A-IoT device is the Internet of Things device described in this application.

[0648] It should be noted that the structure of the A-IoT device in this example does not limit the specific implementation of A-IoT in this application. Specifically, depending on the different functions and actual application scenarios of the A-IoT device, the A-IoT device may adopt the structure of the A-IoT device in this example, or may include only some modules of the structure of the A-IoT device in this example, or may include other modules not shown in Figure 14.

[0649] Those skilled in the art will understand that all or part of the steps in the above methods can be implemented by a program instructing related hardware, and the program can be stored in a computer-readable storage medium, such as a read-only memory, hard disk, or optical disk. Optionally, all or part of the steps in the above embodiments can also be implemented using one or more integrated circuits. Correspondingly, each module unit in the above embodiments can be implemented in hardware or in the form of software functional modules. This application is not limited to any specific combination of software and hardware. The terminal or base station or UE in this application includes, but is not limited to, mobile phones, tablets, laptops, network cards, low-power devices, IoT devices, eMTC devices, NB-IoT devices, vehicle communication devices, aircraft, airplanes, drones, remote-controlled airplanes, testing devices, testing equipment, testing instruments, etc. The base station equipment or base station or network-side equipment in this application includes, but is not limited to, macrocell base stations, microcell base stations, home base stations, relay base stations, eNBs, gNBs, Transmitter Receiver Nodes (TRPs), relay satellites, satellite base stations, airborne base stations, testing devices, testing equipment, testing instruments, etc.

[0650] Those skilled in the art will understand that the present invention can be practiced in other specified forms without departing from its core or essential characteristics. Therefore, the embodiments disclosed herein should in any way be considered descriptive rather than restrictive. The scope of the invention is defined by the appended claims rather than the foregoing description, and all modifications within their equivalent meaning and scope are considered to be included therein.

Claims

1. A method for use in a terminal, characterized in that, include: Send the first PRDCH, which uses OOK; The first PRDCH includes L1 control information. The candidate formats of the L1 control information included in the first PRDCH include at least a first format and a second format. The first format and the second format are respectively for different device types of the receivers of the first PRDCH. The number of control information bits included in the first format and the number of control information bits included in the second format are different. Only the L1 control information of the second format includes device type information.

2. The method according to claim 1, characterized in that, The device type includes at least one of type 1, type 2a, and type 2b. The IoT device of type 1 monitors the number of control information bits corresponding to the first format, and at least one of the IoT devices of type 2a or type 2b monitors the number of control information bits corresponding to the first format and the number of control information bits corresponding to the second format.

3. The method according to claim 1 or 2, characterized in that, The L1 control information included in the first PRDCH adopts the second format, and one field included in the L1 control information included in the first PRDCH indicates the transmission mode, which includes at least one of unicast, multicast or broadcast; when the transmission mode is indicated as multicast, at least one field included in the L1 control information included in the first PRDCH indicates the group identifier of multicast.

4. The method according to any one of claims 1-3, characterized in that, The L1 control information included in the first PRDCH adopts the first format, and at least one MAC layer field carried by the first PRDCH indicates the device type of the receiver of the first PRDCH.

5. The method according to any one of claims 1-4, characterized in that, include: Receive the first PDRCH; Wherein, when the L1 control information included in the first PRDCH adopts the first format, a field of the MAC layer included in the first PRDCH indicates the number of chips occupied by the first PDRCH; when the L1 control information included in the first PRDCH adopts the second format, a field of the L1 control information included in the first PRDCH indicates the number of chips occupied by the first PDRCH, wherein the chips include at least one of OOK time units and BPSK time units.

6. The method according to any one of claims 1-5, characterized in that, The first PRDCH includes a data sub-signal and a control sub-signal. The control sub-signal carries L1 control information, and the data sub-signal carries data information bits. The time-domain interval between the control sub-signal and the data sub-signal is equal to or greater than the minimum number of OFDM symbols of a first time interval, which is equal to an absolute time or equal to multiple OOK time units.

7. The method according to any one of claims 1-6, characterized in that, The target power value is equal to the transmit power value of the first PRDCH, and the target power value is equal to the smaller of the first upper limit value and the first power value; at least one of the first upper limit value or the first power value depends on the number of OOK time units included in one OFDM symbol occupied by the first PRDCH in the time domain.

8. A terminal, characterized in that, The terminal includes: one or more processors and a memory; the memory is coupled to the one or more processors, the memory is used to store computer program code, the computer program code including computer instructions, and the one or more processors call the computer instructions to cause the terminal to perform the method as described in any one of claims 1-7.

9. A method for use in Internet of Things (IoT) devices, characterized in that, include: Receive the first PRDCH, which uses OOK; The first PRDCH includes L1 control information. The candidate formats of the L1 control information included in the first PRDCH include at least a first format and a second format. The first format and the second format are respectively for different device types of the IoT devices. The number of control information bits included in the first format and the number of control information bits included in the second format are different. Only the L1 control information of the second format includes device type information.

10. The method according to claim 9, characterized in that, The device type includes at least one of type 1, type 2a, and type 2b. The IoT device of type 1 monitors the number of control information bits corresponding to the first format, and at least one of the IoT devices of type 2a or type 2b monitors the number of control information bits corresponding to the first format and the number of control information bits corresponding to the second format.

11. The method according to claim 9 or 10, characterized in that, The L1 control information included in the first PRDCH adopts the second format, and one field included in the L1 control information included in the first PRDCH indicates the transmission mode, which includes at least one of unicast, multicast or broadcast; when the transmission mode is indicated as multicast, at least one field included in the L1 control information included in the first PRDCH indicates the group identifier of multicast.

12. The method according to any one of claims 9-11, characterized in that, The L1 control information included in the first PRDCH adopts the first format, and at least one MAC layer field carried by the first PRDCH indicates the device type of the Internet of Things device.

13. The method according to any one of claims 9-12, characterized in that, include: Send the first PDRCH; Wherein, when the L1 control information included in the first PRDCH adopts the first format, a field of the MAC layer included in the first PRDCH indicates the number of chips occupied by the first PDRCH; when the L1 control information included in the first PRDCH adopts the second format, a field of the L1 control information included in the first PRDCH indicates the number of chips occupied by the first PDRCH, wherein the chips include at least one of OOK time units and BPSK time units.

14. The method according to any one of claims 9-13, characterized in that, The first PRDCH includes a data sub-signal and a control sub-signal. The control sub-signal carries L1 control information, and the data sub-signal carries data information bits. The time-domain interval between the control sub-signal and the data sub-signal is equal to or greater than the minimum number of OFDM symbols of a first time interval, which is equal to an absolute time or equal to multiple OOK time units.

15. The method according to any one of claims 9-14, characterized in that, The target power value is equal to the transmit power value of the first PRDCH, and the target power value is equal to the smaller of the first upper limit value and the first power value; at least one of the first upper limit value or the first power value depends on the number of OOK time units included in one OFDM symbol occupied by the first PRDCH in the time domain.

16. An Internet of Things (IoT) device, characterized in that, The Internet of Things (IoT) device includes: one or more processors and a memory; the memory is coupled to the one or more processors, the memory is used to store computer program code, the computer program code including computer instructions, and the one or more processors call the computer instructions to cause the IoT device to perform the method as described in any one of claims 9-15.

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