Communication methods, devices, system, storage medium, and program product

Abstract

The embodiments of the present disclosure relate to the technical field of communications. Provided are communication methods, devices, a system, a storage medium, and a program product. A communication method is executed by a first device, and comprises: sending first indication information, the first indication information being used for indicating a waveform generation mode for a first message, wherein the first message is a message sent by the first device to a second-type device, and the waveform generation mode for the first message is a mode for generating an on-off keying (OOK) waveform having a cyclic prefix (CP) or a mode for generating an OOK waveform having no CP. A first device sends first indication information, such that a second-type device can determine a waveform generation mode for a first message on the basis of the first indication information, so as to receive, on the basis of the waveform generation mode for the first message, the first message sent by the first device.

Description

Communication methods, devices, systems, storage media and software products Technical Field

[0001] This disclosure relates to the field of communication technology, and in particular to a communication method, device, system, storage medium, and program product. Background Technology

[0002] Ambient IoT (A-IoT) devices can collect energy from environmental energy sources such as radio waves, light, motion, and heat to perform their functions. Readers can store information about A-IoT devices through reader-to-device (R2D) messages. Summary of the Invention

[0003] This disclosure provides a communication method, device, system, storage medium, and program product for determining the waveform generation method of a first message.

[0004] According to a first aspect of the embodiments of this disclosure, a communication method is provided, performed by a first device, the method comprising:

[0005] Send a first indication message, which is used to indicate the waveform generation method of the first message;

[0006] The first message is a message sent from the first device to the second type of device; the waveform of the first message is generated by either an on-off-keying (OOK) waveform generation method that includes a cyclic prefix (CP) or an OOK waveform generation method that does not include CP.

[0007] In the above embodiments, the first device can indicate whether the waveform generation method of the first message is an OOK waveform generation method that includes CP or an OOK waveform generation method that does not include CP by sending first indication information, which helps to solve the problem of the impact of CP length on demodulation performance in OFDM system.

[0008] According to a second aspect of the embodiments of this disclosure, a communication method is provided, performed by a second type of device, the method comprising:

[0009] Receive first indication information, the first indication information being used to indicate the waveform generation method of the first message from the first device;

[0010] The waveform generation method for the first message is either an OOK waveform generation method that includes CP or an OOK waveform generation method that does not include CP.

[0011] In the above embodiments, the second type of device receives the first indication information, determines the waveform generation method of the first message according to the first indication information, and is thus able to receive the first message sent by the first device according to the waveform generation method of the first message.

[0012] According to a third aspect of the embodiments of this disclosure, a communication method is provided, performed by a first device, the method comprising:

[0013] Send a first indication message, which is used to indicate the range of values ​​for the first parameter;

[0014] Wherein, the first parameter is the number of OOK symbols contained in each OFDM symbol carrying the first message, or the first parameter is the number of OOK symbols contained in each OFDM symbol carrying the first message and the CP corresponding to each OFDM symbol; the first message is a message sent by the first device to the second type of device.

[0015] In the above embodiments, the first device sends a first instruction message, enabling the second type of device to determine the value range of the first parameter based on the first instruction message, thereby determining the waveform generation method of the first message based on the value range of the first parameter, and receiving the first message sent by the first device based on the waveform generation method of the first message.

[0016] According to a fourth aspect of the embodiments of this disclosure, a communication method is provided, performed by a second type of device, the method comprising:

[0017] Receive first indication information, which is used to indicate the value range of the first parameter;

[0018] Wherein, the first parameter is the number of OOK symbols contained in each OFDM symbol carrying the first message, or the first parameter is the number of OOK symbols contained in each OFDM symbol carrying the first message and the CP corresponding to each OFDM symbol; the first message is a message from the first device.

[0019] In the above embodiments, the first device sends a first instruction message, enabling the second type of device to determine the value range of the first parameter based on the first instruction message, thereby determining the waveform generation method of the first message based on the value range of the first parameter, and receiving the first message sent by the first device based on the waveform generation method of the first message.

[0020] According to a fifth aspect of the embodiments of this disclosure, a first device is provided, comprising:

[0021] The transceiver module is used to send first indication information, which indicates the waveform generation method of the first message;

[0022] The first message is a message sent from the first device to the second type of device; the waveform of the first message is generated in either the OOK waveform generation method that includes CP or the OOK waveform generation method that does not include CP.

[0023] According to a sixth aspect of the embodiments of this disclosure, a second type of device is provided, comprising:

[0024] The transceiver module is used to receive first indication information, which indicates the waveform generation method of the first message from the first device.

[0025] The waveform generation method for the first message is either an OOK waveform generation method that includes CP or an OOK waveform generation method that does not include CP.

[0026] According to a seventh aspect of the embodiments of this disclosure, a first device is provided, comprising:

[0027] The transceiver module is used to send first indication information, which indicates the range of values ​​for the first parameter.

[0028] Wherein, the first parameter is the number of OOK symbols contained in each OFDM symbol carrying the first message, or the first parameter is the number of OOK symbols contained in each OFDM symbol carrying the first message and the CP corresponding to each OFDM symbol; the first message is a message sent by the first device to the second type of device.

[0029] According to an eighth aspect of the embodiments of this disclosure, a second type of device is provided, comprising:

[0030] The transceiver module is used to receive first indication information, which indicates the range of values ​​for the first parameter.

[0031] Wherein, the first parameter is the number of OOK symbols contained in each OFDM symbol carrying the first message, or the first parameter is the number of OOK symbols contained in each OFDM symbol carrying the first message and the CP corresponding to each OFDM symbol; the first message is a message from the first device.

[0032] According to a ninth aspect of the present disclosure, a communication device is provided for performing the method described in the first aspect and optional implementations of the first aspect, or for performing the method described in the second aspect and optional implementations of the second aspect, or for performing the method described in the third aspect and optional implementations of the third aspect, or for performing the method described in the fourth aspect and optional implementations of the fourth aspect.

[0033] According to a tenth aspect of the present disclosure, a communication system is provided, including a first device and a second type of device, wherein the first device is configured to implement the method described in the first aspect and optional implementations of the first aspect, and the second type of device is configured to implement the method described in the second aspect and optional implementations of the second aspect.

[0034] According to an eleventh aspect of the present disclosure, a communication system is provided, including a first device and a second type of device, wherein the first device is configured to implement the method described in the third aspect and optional implementations of the third aspect, and the second type of device is configured to implement the method described in the fourth aspect and optional implementations of the fourth aspect.

[0035] According to a twelfth aspect of the present disclosure, a storage medium is provided that stores instructions, which, when executed on a communication device, cause the communication device to perform the method described in the first aspect and its optional implementations, or cause the communication device to perform the method described in the second aspect and its optional implementations, or cause the communication device to perform the method described in the third aspect and its optional implementations, or cause the communication device to perform the method described in the fourth aspect and its optional implementations.

[0036] According to a thirteenth aspect of the present disclosure, a program product is provided, comprising at least one of a program and instructions. When the program and instructions are executed by a communication device, the program implements the method described in the first aspect and its optional implementations, or implements the method described in the second aspect and its optional implementations, or implements the method described in the third aspect and its optional implementations, or implements the method described in the fourth aspect and its optional implementations. Attached Figure Description

[0037] To more clearly illustrate the technical solutions in the embodiments of this disclosure, the accompanying drawings required for the description of the embodiments are introduced below. The following drawings are only some embodiments of this disclosure and do not impose specific limitations on the protection scope of this disclosure.

[0038] Figure 1a is a schematic diagram of the architecture of a communication system according to an embodiment of the present disclosure;

[0039] Figure 1b is a schematic diagram of A-IoT communication provided in an embodiment of this disclosure;

[0040] Figure 1c is a schematic diagram of reverse reflection communication provided in an embodiment of this disclosure;

[0041] Figure 1d is a schematic diagram of a resistive load modulation circuit provided in an embodiment of this disclosure;

[0042] Figure 1e is a schematic diagram of the ASK modulation process provided in an embodiment of this disclosure;

[0043] Figure 1f is a communication flowchart between the tag and the reader provided in an embodiment of this disclosure;

[0044] Figure 1g is a schematic diagram of the network topology of the A-IoT technology provided in the embodiments of this disclosure;

[0045] Figure 1h is a second schematic diagram of the network topology of the A-IoT technology provided in the embodiments of this disclosure;

[0046] Figure 1i is a schematic diagram of the A-IoT device inventory process provided in an embodiment of this disclosure;

[0047] Figure 1j is a schematic diagram of the OOK waveform generation method of R2D provided in the embodiments of this disclosure;

[0048] Figure 2a is an exemplary interactive schematic diagram of a communication method provided in an embodiment of this disclosure;

[0049] Figure 2b is an exemplary interactive schematic diagram of the communication method provided in this embodiment of the present disclosure;

[0050] Figure 2c is an exemplary interactive schematic diagram of the communication method provided in this embodiment of the present disclosure;

[0051] Figure 2d is a schematic diagram of an inventory process provided in an embodiment of this disclosure;

[0052] Figure 3 is an exemplary interactive schematic diagram of a communication method provided in an embodiment of this disclosure;

[0053] Figure 4a is an exemplary interactive schematic diagram of the communication method provided in this embodiment of the present disclosure;

[0054] Figure 4b is an exemplary interactive schematic diagram of the communication method provided in this embodiment of the present disclosure.

[0055] Figure 4c is an exemplary interactive schematic diagram of the communication method provided in this embodiment of the present disclosure;

[0056] Figure 4d is a schematic diagram of an R2D frame structure of a communication method provided in an embodiment of this disclosure;

[0057] Figure 5 is an exemplary interactive schematic diagram of a communication method provided in an embodiment of this disclosure;

[0058] Figure 6a is an exemplary structural schematic diagram of the first device proposed in an embodiment of this disclosure;

[0059] Figure 6b is an exemplary structural diagram of the second type of device proposed in an embodiment of this disclosure;

[0060] Figure 6c is an exemplary structural schematic diagram of the first device proposed in an embodiment of this disclosure;

[0061] Figure 6d is an exemplary structural diagram of the second type of device proposed in an embodiment of this disclosure;

[0062] Figure 7a is an exemplary structural schematic diagram of the communication device proposed in an embodiment of this disclosure;

[0063] Figure 7b is an exemplary structural diagram of the chip proposed in an embodiment of this disclosure. Detailed Implementation

[0064] This disclosure provides a communication method, device, system, storage medium, and program product for determining the waveform generation method of a first message.

[0065] According to a first aspect of the embodiments of this disclosure, a communication method is provided, performed by a first device, the method comprising:

[0066] Send a first indication message, which is used to indicate the waveform generation method of the first message;

[0067] The first message is a message sent from the first device to the second type of device; the waveform of the first message is generated by either an on-off-keying (OOK) waveform generation method that includes a cyclic prefix (CP) or an OOK waveform generation method that does not include CP.

[0068] In the above embodiments, the first device can indicate whether the waveform generation method of the first message is an OOK waveform generation method that includes CP or an OOK waveform generation method that does not include CP by sending first indication information, which helps to solve the problem of the impact of CP length on demodulation performance in OFDM system.

[0069] In conjunction with some embodiments of the first aspect, in some embodiments, the waveform generation method of the first message is associated with at least one of the following:

[0070] The capabilities of the second type of device include: the ability of the second type of device to process or receive OOK waveforms containing CP, or the ability of the second type of device to process or receive OOK waveforms not containing CP;

[0071] The first parameter has a range of values. The first parameter is the number of OOK symbols contained in each Orthogonal Frequency Division Multiplexing (OFDM) symbol carrying the first message, or the first parameter is the number of OOK symbols contained in each OFDM symbol carrying the first message and the CP corresponding to each OFDM symbol.

[0072] In the above embodiments, if the waveform generation method of the first message is associated with the capabilities of the second type of device, the first device can perform inventory checks on the second type of devices with different capabilities through the first message, and can perform access control on the second type of devices with different capabilities; if the waveform generation method of the first message is associated with the value range of the first parameter, the second type of device can determine the value range of the first parameter according to the waveform generation method of the first message, and thus determine whether to participate in this round of inventory checks based on the value range of the first parameter.

[0073] In conjunction with some embodiments of the first aspect, in some embodiments, the waveform generation method of the first message is associated with the capabilities of the second type of device, including:

[0074] The waveform generation method of the first message is the OOK waveform generation method containing CP, and the second type of device has the ability to process or receive OOK waveforms containing CP;

[0075] or,

[0076] The waveform generation method of the first message is the OOK waveform generation method without CP, and the second type of device has the ability to process or receive OOK waveforms without CP.

[0077] In the above embodiments, if the waveform generation method of the first message is an OOK waveform generation method including CP, the first device can store the second type of device through the first message, wherein the second type of device has the ability to process or receive OOK waveforms including CP; if the waveform generation method of the first message is an OOK waveform generation method without CP, the first device can store the second type of device through the first message, wherein the second type of device has the ability to process or receive OOK waveforms without CP. Through this method, the first device can store the second type of devices with different capabilities separately, and can perform access control on the second type of devices with different capabilities.

[0078] In conjunction with some embodiments of the first aspect, in some embodiments, the waveform of the first message is generated as an OOK waveform generation method including CP, and the method further includes:

[0079] The second message is received from the response first message from the second type of device, which has the capability to process or receive an OOK waveform containing CP.

[0080] In the above embodiments, since the waveform generation method of the first message is associated with the capability of the second type of device, when the waveform generation method of the first message is an OOK waveform generation method containing CP, the first device can perform inventory of the second type of device through the first message. The second type of device has the capability to process or receive OOK waveforms containing CP. Accordingly, the second type of device responds to the first message and sends a second message to the first device, thereby being able to participate in this round of inventory.

[0081] In conjunction with some embodiments of the first aspect, in some embodiments, the waveform of the first message is generated as an OOK waveform generation method that does not include CP, and the method further includes:

[0082] The second message is received from the response first message from the second type of device, which has the ability to process or receive OOK waveforms that do not contain CP.

[0083] In the above embodiments, since the waveform generation method of the first message is related to the capability of the second type of device, when the waveform generation method of the first message is an OOK waveform generation method without CP, the first device can perform inventory of the second type of device through the first message. The second type of device has the capability to process or receive OOK waveforms without CP. Accordingly, the second type of device responds to the first message and sends a second message to the first device, thereby being able to participate in this round of inventory.

[0084] In conjunction with some embodiments of the first aspect, in some embodiments, the waveform generation method of the first message is associated with the value range of the first parameter, including:

[0085] The waveform of the first message is generated using the OOK waveform generation method that includes CP, and the first parameter is less than or equal to the first threshold.

[0086] or,

[0087] The waveform of the first message is generated in the OOK waveform generation method without CP, and the first parameter is greater than or equal to the first threshold.

[0088] In the above embodiments, the waveform generation method of the first message is associated with the value range of the first parameter. The second type of device can determine the value range of the first parameter according to the waveform generation method of the first message, and thus determine whether to participate in this round of inventory based on the value range of the first parameter.

[0089] In conjunction with some embodiments of the first aspect, in some embodiments, the first indication information includes a value range of the first parameter, and the value range of the first parameter is used to indicate the waveform generation method of the first message;

[0090] The first parameter is the number of OOK symbols contained in each OFDM symbol carrying the first message, or the first parameter is the number of OOK symbols contained in each OFDM symbol carrying the first message and the CP corresponding to each OFDM symbol.

[0091] In the above embodiments, the first indication information includes the value range of the first parameter, and the first device can indicate the waveform generation method of the first message through the value range of the first parameter.

[0092] In conjunction with some embodiments of the first aspect, in some embodiments, the range of values ​​for the first parameter is associated with at least one of the following:

[0093] The capabilities of the second type of device include: the ability of the second type of device to process or receive OOK waveforms containing CP, or the ability of the second type of device to process or receive OOK waveforms not containing CP;

[0094] The waveform generation methods for the first message include: an OOK waveform generation method that includes CP, or an OOK waveform generation method that does not include CP.

[0095] In the above embodiments, if the value range of the first parameter is related to the capability of the second type of device, the first device can inventory the second type of devices with different capabilities through the first message and can control the access of the second type of devices with different capabilities; if the value range of the first parameter is related to the waveform generation method of the first message, the second type of device can determine the waveform generation method of the first message according to the value range of the first parameter, and thus receive the first message sent by the first device according to the waveform generation method of the first message.

[0096] In conjunction with some embodiments of the first aspect, in some embodiments, the range of values ​​for the first parameter is associated with the capabilities of the second type of device, including:

[0097] The first parameter is less than or equal to the first threshold, and the second type of device has the ability to process or receive OOK waveforms containing CP;

[0098] or,

[0099] The first parameter is greater than or equal to the first threshold, and the second type of device has the ability to process or receive OOK waveforms that do not contain CP.

[0100] In the above embodiments, the value range of the first parameter is associated with the capability of the second type of device, so that the first device can store the corresponding second type of device.

[0101] In conjunction with some embodiments of the first aspect, in some embodiments, the first parameter is less than or equal to a first threshold, and the method further includes:

[0102] The second message is received from the response first message from the second type of device, which has the capability to process or receive an OOK waveform containing CP.

[0103] In the above embodiments, since the range of the first parameter is related to the capability of the second type of device, when the first parameter is less than or equal to the first threshold, the first device can perform inventory of the second type of device through the first message. The second type of device has the capability to process or receive OOK waveforms containing CP. Accordingly, the second type of device responds to the first message and sends a second message to the first device, thereby being able to participate in this round of inventory.

[0104] In conjunction with some embodiments of the first aspect, in some embodiments, the first parameter is greater than or equal to a first threshold, and the method further includes:

[0105] The second message is received from the response first message from the second type of device, which has the ability to process or receive OOK waveforms that do not contain CP.

[0106] In the above embodiments, since the range of the first parameter is related to the capability of the second type of device, when the first parameter is greater than or equal to the first threshold, the first device can perform inventory of the second type of device through the first message. The second type of device has the capability to process or receive OOK waveforms that do not contain CP. Accordingly, the second type of device responds to the first message and sends a second message to the first device, thereby being able to participate in this round of inventory.

[0107] In conjunction with some embodiments of the first aspect, in some embodiments, the value range of the first parameter is associated with the waveform generation method of the first message, including:

[0108] If the first parameter is less than or equal to the first threshold, the waveform of the first message is generated in the OOK waveform generation method that includes CP.

[0109] or,

[0110] The first parameter is greater than or equal to the first threshold, and the waveform of the first message is generated in the OOK waveform generation method without CP.

[0111] In the above embodiments, when the first parameter is less than or equal to the first threshold, the waveform generation method of the first message can adopt the OOK waveform generation method including CP to improve coverage performance; when the first parameter is greater than or equal to the first threshold, the length of CP is close to the length of one OOK symbol level, so the waveform generation method of the first message can adopt the OOK waveform generation method without CP, thereby reducing the impact of CP length on the waveform reception performance of the first message.

[0112] In conjunction with some embodiments of the first aspect, in some embodiments, the value of the first parameter belongs to a first set, and the first set includes at least one of the following:

[0113] 1,2,4,6,8,12,16,24,32.

[0114] In conjunction with some embodiments of the first aspect, in some embodiments, the value of the first threshold is one of the following:

[0115] 6,8,12,16.

[0116] In the above embodiments, by setting an appropriate set of values ​​for the first parameter and the value of the first threshold, it helps the second type of device determine whether to participate in this round of inventory based on the range of values ​​for the first parameter.

[0117] In conjunction with some embodiments of the first aspect, in some embodiments, the waveform generation method of the first message is an OOK waveform generation method including CP, including:

[0118] The first message is carried on P OFDM symbols and the corresponding CPs of P OFDM symbols. The duration of each OFDM symbol and its corresponding CP is the first time unit, and the duration of each OOK symbol contained in each OFDM symbol is the second time unit.

[0119] The first time unit includes N equal second time units, where N is a positive integer.

[0120] In the above embodiments, when the first parameter is less than or equal to the first threshold, the length of CP is much smaller than the length of an OOK symbol level. Therefore, the waveform generation method of the first message can adopt the OOK waveform generation method that includes CP, thereby improving coverage performance.

[0121] In conjunction with some embodiments of the first aspect, in some embodiments, the waveform generation method of the first message is an OOK waveform generation method that does not include CP, including:

[0122] The first message is carried on Q OFDM symbols. The duration of each OFDM symbol is the first time unit, and the duration of each OOK symbol contained in each OFDM symbol is the second time unit.

[0123] The first time unit includes M equal second time units, where M is a positive integer.

[0124] In the above embodiments, when the first parameter is greater than or equal to the first threshold, the length of the CP is close to the length of an OOK symbol level. Therefore, the waveform generation method of the first message can adopt the OOK waveform generation method without CP, thereby reducing the impact of CP on the waveform reception performance of the first message.

[0125] In conjunction with some embodiments of the first aspect, in some embodiments, the first indication information is carried in an inventory trigger message, which is used to trigger a second type of device to participate in inventory.

[0126] In conjunction with some embodiments of the first aspect, in some embodiments, the waveform generation method used for the inventory trigger message is a predefined waveform generation method.

[0127] In the above embodiments, the waveform generation method used for the inventory trigger message is a predefined waveform generation method, which enables the second type of device to receive the inventory trigger message according to the predefined waveform generation method, thereby obtaining the first indication information and determining the waveform generation method of the first message according to the first indication information.

[0128] According to a second aspect of the embodiments of this disclosure, a communication method is provided, performed by a second type of device, the method comprising:

[0129] Receive first indication information, the first indication information being used to indicate the waveform generation method of the first message from the first device;

[0130] The waveform generation method for the first message is either an OOK waveform generation method that includes CP or an OOK waveform generation method that does not include CP.

[0131] In the above embodiments, the second type of device receives the first indication information, determines the waveform generation method of the first message according to the first indication information, and is thus able to receive the first message sent by the first device according to the waveform generation method of the first message.

[0132] In conjunction with some embodiments of the second aspect, in some embodiments, the waveform generation method of the first message is associated with at least one of the following:

[0133] The capabilities of the second type of device include: the ability of the second type of device to process or receive OOK waveforms containing CP, or the ability of the second type of device to process or receive OOK waveforms not containing CP;

[0134] The first parameter can be a range of values, where the first parameter is the number of OOK symbols contained in each OFDM symbol carrying the first message, or the first parameter is the number of OOK symbols contained in each OFDM symbol carrying the first message and the CP corresponding to each OFDM symbol.

[0135] In the above embodiments, if the waveform generation method of the first message is associated with the capability of the second type of device, the second type of device can determine whether to participate in this round of inventory based on the waveform generation method of the first message; if the waveform generation method of the first message is associated with the value range of the first parameter, the second type of device can determine the value range of the first parameter based on the waveform generation method of the first message, and thus determine whether to participate in this round of inventory based on the value range of the first parameter.

[0136] In conjunction with some embodiments of the second aspect, in some embodiments, the waveform generation method of the first message is associated with the capabilities of the second type of device, including:

[0137] The waveform generation method of the first message is the OOK waveform generation method containing CP, and the second type of device has the ability to process or receive OOK waveforms containing CP;

[0138] or,

[0139] The waveform generation method of the first message is the OOK waveform generation method without CP, and the second type of device has the ability to process or receive OOK waveforms without CP.

[0140] In the above embodiments, if the waveform generation method of the first message is an OOK waveform generation method including CP, the first device can store the second type of device through the first message, wherein the second type of device has the ability to process or receive OOK waveforms including CP; if the waveform generation method of the first message is an OOK waveform generation method without CP, the first device can store the second type of device through the first message, wherein the second type of device has the ability to process or receive OOK waveforms without CP. Through this method, the first device can store the second type of devices with different capabilities separately, and can perform access control on the second type of devices with different capabilities.

[0141] In conjunction with some embodiments of the second aspect, in some embodiments, the waveform of the first message is generated as an OOK waveform generation method including CP, and the method further includes:

[0142] Send a second message in response to the first message to the first device, wherein the second type of device has the ability to process or receive an OOK waveform containing CP.

[0143] In the above embodiments, since the waveform generation method of the first message is associated with the capability of the second type of device, when the waveform generation method of the first message is an OOK waveform generation method containing CP, the first device can perform inventory of the second type of device through the first message. The second type of device has the capability to process or receive OOK waveforms containing CP. Accordingly, the second type of device responds to the first message and sends a second message to the first device, thereby being able to participate in this round of inventory.

[0144] In conjunction with some embodiments of the second aspect, in some embodiments, the waveform of the first message is generated as an OOK waveform generation method that does not include CP, and the method further includes:

[0145] Send a second message in response to the first message to the first device, wherein the second type of device has the ability to process or receive OOK waveforms that do not contain CP.

[0146] In the above embodiments, since the waveform generation method of the first message is related to the capability of the second type of device, when the waveform generation method of the first message is an OOK waveform generation method without CP, the first device can perform inventory of the second type of device through the first message. The second type of device has the capability to process or receive OOK waveforms without CP. Accordingly, the second type of device responds to the first message and sends a second message to the first device, thereby being able to participate in this round of inventory.

[0147] In conjunction with some embodiments of the second aspect, in some embodiments, the waveform generation method of the first message is associated with the value range of the first parameter, including:

[0148] The waveform of the first message is generated using the OOK waveform generation method that includes CP, and the first parameter is less than or equal to the first threshold.

[0149] or,

[0150] The waveform of the first message is generated in the OOK waveform generation method without CP, and the first parameter is greater than or equal to the first threshold.

[0151] In the above embodiments, the waveform generation method of the first message is associated with the value range of the first parameter. The second type of device can determine the value range of the first parameter according to the waveform generation method of the first message, and thus determine whether to participate in this round of inventory based on the value range of the first parameter.

[0152] In conjunction with some embodiments of the first aspect, in some embodiments, the first indication information includes a value range of the first parameter, and the value range of the first parameter is used to indicate the waveform generation method of the first message;

[0153] The first parameter is the number of OOK symbols contained in each OFDM symbol carrying the first message, or the first parameter is the number of OOK symbols contained in each OFDM symbol carrying the first message and the CP corresponding to each OFDM symbol.

[0154] In the above embodiments, the first indication information includes the value range of the first parameter, and the second type of device can determine the waveform generation method of the first message based on the value range of the first parameter.

[0155] In conjunction with some embodiments of the first aspect, in some embodiments, the range of values ​​for the first parameter is associated with at least one of the following:

[0156] The capabilities of the second type of device include: the ability of the second type of device to process or receive OOK waveforms containing CP, or the ability of the second type of device to process or receive OOK waveforms not containing CP;

[0157] The waveform generation methods for the first message include: an OOK waveform generation method that includes CP, or an OOK waveform generation method that does not include CP.

[0158] In the above embodiments, if the value range of the first parameter is related to the capability of the second type of device, the first device can inventory the second type of devices with different capabilities through the first message and can control the access of the second type of devices with different capabilities; if the value range of the first parameter is related to the waveform generation method of the first message, the second type of device can determine the waveform generation method of the first message according to the value range of the first parameter, and thus receive the first message sent by the first device according to the waveform generation method of the first message.

[0159] In conjunction with some embodiments of the first aspect, in some embodiments, the range of values ​​for the first parameter is associated with the capabilities of the second type of device, including:

[0160] The first parameter is less than or equal to the first threshold, and the second type of device has the ability to process or receive OOK waveforms containing CP;

[0161] or,

[0162] The first parameter is greater than or equal to the first threshold, and the second type of device has the ability to process or receive OOK waveforms that do not contain CP.

[0163] In the above embodiments, the value range of the first parameter is associated with the capability of the second type of device, enabling the second type of device to determine whether to participate in this round of inventory.

[0164] In conjunction with some embodiments of the first aspect, in some embodiments, the first parameter is less than or equal to a first threshold, and the method further includes:

[0165] The second message is received from the response first message from the second type of device, which has the capability to process or receive an OOK waveform containing CP.

[0166] In the above embodiments, since the range of the first parameter is related to the capability of the second type of device, when the first parameter is less than or equal to the first threshold, the first device can perform inventory of the second type of device through the first message. The second type of device has the capability to process or receive OOK waveforms containing CP. Accordingly, the second type of device responds to the first message and sends a second message to the first device, thereby being able to participate in this round of inventory.

[0167] In conjunction with some embodiments of the first aspect, in some embodiments, the first parameter is greater than or equal to a first threshold, and the method further includes:

[0168] The second message is received from the response first message from the second type of device, which has the ability to process or receive OOK waveforms that do not contain CP.

[0169] In the above embodiments, since the range of the first parameter is related to the capability of the second type of device, when the first parameter is greater than or equal to the first threshold, the first device can perform inventory of the second type of device through the first message. The second type of device has the capability to process or receive OOK waveforms that do not contain CP. Accordingly, the second type of device responds to the first message and sends a second message to the first device, thereby being able to participate in this round of inventory.

[0170] In conjunction with some embodiments of the first aspect, in some embodiments, the value range of the first parameter is associated with the waveform generation method of the first message, including:

[0171] If the first parameter is less than or equal to the first threshold, the waveform of the first message is generated in the OOK waveform generation method that includes CP.

[0172] or,

[0173] The first parameter is greater than or equal to the first threshold, and the waveform of the first message is generated in the OOK waveform generation method without CP.

[0174] In the above embodiments, when the first parameter is less than or equal to the first threshold, the waveform generation method of the first message can adopt the OOK waveform generation method including CP to improve coverage performance; when the first parameter is greater than or equal to the first threshold, the length of CP is close to the length of one OOK symbol level, so the waveform generation method of the first message can adopt the OOK waveform generation method without CP, thereby reducing the impact of CP on the waveform reception performance of the first message.

[0175] In conjunction with some embodiments of the second aspect, in some embodiments, the value of the first parameter belongs to a first set, and the first set includes at least one of the following:

[0176] 1,2,4,6,8,12,16,24,32.

[0177] In conjunction with some embodiments of the second aspect, in some embodiments, the value of the first threshold is one of the following:

[0178] 6,8,12,16.

[0179] In the above embodiments, by setting an appropriate set of values ​​for the first parameter and the value of the first threshold, it helps the second type of device determine whether to participate in this round of inventory based on the range of values ​​for the first parameter.

[0180] In conjunction with some embodiments of the second aspect, in some embodiments, the waveform generation method of the first message is an OOK waveform generation method including CP, including:

[0181] The first message is carried on P OFDM symbols and the corresponding CPs of P OFDM symbols. The duration of each OFDM symbol and its corresponding CP is the first time unit, and the duration of each OOK symbol contained in each OFDM symbol is the second time unit.

[0182] The first time unit includes N equal second time units, where N is a positive integer.

[0183] In the above embodiments, when the first parameter is less than or equal to the first threshold, the length of CP is much smaller than the length of an OOK symbol level. Therefore, the waveform generation method of the first message can adopt the OOK waveform generation method that includes CP, thereby improving coverage performance.

[0184] In conjunction with some embodiments of the second aspect, in some embodiments, the waveform generation method of the first message is an OOK waveform generation method that does not include CP, including:

[0185] The first message is carried on Q OFDM symbols. The duration of each OFDM symbol is the first time unit, and the duration of each OOK symbol contained in each OFDM symbol is the second time unit.

[0186] The first time unit includes M equal second time units, where M is a positive integer.

[0187] In the above embodiments, when the first parameter is greater than or equal to the first threshold, the length of the CP is close to the length of an OOK symbol level. Therefore, the waveform generation method of the first message can adopt the OOK waveform generation method without CP, thereby reducing the impact of CP on the waveform reception performance of the first message.

[0188] In conjunction with some embodiments of the second aspect, in some embodiments, the first indication information is carried in an inventory trigger message, which is used to trigger the second type of device to participate in inventory.

[0189] In conjunction with some embodiments of the second aspect, in some embodiments, the waveform generation method used for the inventory trigger message is a predefined waveform generation method.

[0190] In the above embodiments, the waveform generation method used for the inventory trigger message is a predefined waveform generation method, which enables the second type of device to receive the inventory trigger message according to the predefined waveform generation method, thereby obtaining the first indication information and determining the waveform generation method of the first message according to the first indication information.

[0191] According to a third aspect of the embodiments of this disclosure, a communication method is provided, performed by a first device, the method comprising:

[0192] Send a first indication message, which is used to indicate the range of values ​​for the first parameter;

[0193] Wherein, the first parameter is the number of OOK symbols contained in each OFDM symbol carrying the first message, or the first parameter is the number of OOK symbols contained in each OFDM symbol carrying the first message and the CP corresponding to each OFDM symbol; the first message is a message sent by the first device to the second type of device.

[0194] In the above embodiments, the first device sends a first instruction message, enabling the second type of device to determine the value range of the first parameter based on the first instruction message, thereby determining the waveform generation method of the first message based on the value range of the first parameter, and receiving the first message sent by the first device based on the waveform generation method of the first message.

[0195] In conjunction with some embodiments of the third aspect, in some embodiments, the range of values ​​for the first parameter is associated with at least one of the following:

[0196] The capabilities of the second type of device include: the ability of the second type of device to process or receive OOK waveforms containing CP, or the ability of the second type of device to process or receive OOK waveforms not containing CP;

[0197] The waveform generation methods for the first message include: an OOK waveform generation method that includes CP, or an OOK waveform generation method that does not include CP.

[0198] In the above embodiments, if the value range of the first parameter is related to the capability of the second type of device, the first device can inventory the second type of devices with different capabilities through the first message and can control the access of the second type of devices with different capabilities; if the value range of the first parameter is related to the waveform generation method of the first message, the second type of device can determine the waveform generation method of the first message according to the value range of the first parameter, and thus receive the first message sent by the first device according to the waveform generation method of the first message.

[0199] In conjunction with some embodiments of the third aspect, in some embodiments, the range of values ​​for the first parameter is associated with the capabilities of the second type of device, including:

[0200] The first parameter is less than or equal to the first threshold, and the second type of device has the ability to process or receive OOK waveforms containing CP;

[0201] or,

[0202] The first parameter is greater than or equal to the first threshold, and the second type of device has the ability to process or receive OOK waveforms that do not contain CP.

[0203] In the above embodiments, the value range of the first parameter is associated with the capability of the second type of device, so that the first device can store the corresponding second type of device.

[0204] In conjunction with some embodiments of the third aspect, in some embodiments, where the first parameter is less than or equal to a first threshold, the method further includes:

[0205] The second message is received from the response first message from the second type of device, which has the capability to process or receive an OOK waveform containing CP.

[0206] In the above embodiments, since the range of the first parameter is related to the capability of the second type of device, when the first parameter is less than or equal to the first threshold, the first device can perform inventory of the second type of device through the first message. The second type of device has the capability to process or receive OOK waveforms containing CP. Accordingly, the second type of device responds to the first message and sends a second message to the first device, thereby being able to participate in this round of inventory.

[0207] In conjunction with some embodiments of the third aspect, in some embodiments, where the first parameter is greater than or equal to a first threshold, the method further includes:

[0208] The second message is received from the response first message from the second type of device, which has the ability to process or receive OOK waveforms that do not contain CP.

[0209] In the above embodiments, since the range of the first parameter is related to the capability of the second type of device, when the first parameter is greater than or equal to the first threshold, the first device can perform inventory of the second type of device through the first message. The second type of device has the capability to process or receive OOK waveforms that do not contain CP. Accordingly, the second type of device responds to the first message and sends a second message to the first device, thereby being able to participate in this round of inventory.

[0210] In conjunction with some embodiments of the third aspect, in some embodiments, the value range of the first parameter is associated with the waveform generation method of the first message, including:

[0211] If the first parameter is less than or equal to the first threshold, the waveform of the first message is generated in the OOK waveform generation method that includes CP.

[0212] or,

[0213] The first parameter is greater than or equal to the first threshold, and the waveform of the first message is generated in the OOK waveform generation method without CP.

[0214] In the above embodiments, when the first parameter is less than or equal to the first threshold, the length of the CP is much smaller than the length of an OOK symbol level. Therefore, the waveform generation method of the first message can adopt the OOK waveform generation method that includes the CP to improve coverage performance. When the first parameter is greater than or equal to the first threshold, the length of the CP is close to the length of an OOK symbol level. Therefore, the waveform generation method of the first message can adopt the OOK waveform generation method that does not include the CP, thereby reducing the impact of the CP on the waveform reception performance of the first message.

[0215] In conjunction with some embodiments of the third aspect, in some embodiments, the value of the first parameter belongs to a first set, and the first set includes at least one of the following:

[0216] 1,2,4,6,8,12,16,24,32.

[0217] In conjunction with some embodiments of the third aspect, in some embodiments, the value of the first threshold is one of the following:

[0218] 6,8,12,16.

[0219] In the above embodiments, by setting an appropriate set of values ​​for the first parameter and the value of the first threshold, it helps the second type of device determine whether to participate in this round of inventory based on the value range of the first parameter, and helps the second type of device determine the waveform generation method of the first message based on the value range of the first parameter.

[0220] In conjunction with some embodiments of the third aspect, in some embodiments, the waveform generation method of the first message is an OOK waveform generation method including CP, including:

[0221] The first message is carried on P OFDM symbols and the corresponding CPs of P OFDM symbols. The duration of each OFDM symbol and its corresponding CP is the first time unit, and the duration of each OOK symbol contained in each OFDM symbol is the second time unit.

[0222] The first time unit includes N equal second time units, where N is a positive integer.

[0223] In the above embodiments, when the first parameter is less than or equal to the first threshold, the length of CP is much smaller than the length of an OOK symbol level. Therefore, the waveform generation method of the first message can adopt the OOK waveform generation method that includes CP, thereby improving coverage performance.

[0224] In conjunction with some embodiments of the third aspect, in some embodiments, the waveform generation method of the first message is an OOK waveform generation method that does not include CP, including:

[0225] The first message is carried on Q OFDM symbols. The duration of each OFDM symbol is the first time unit, and the duration of each OOK symbol contained in each OFDM symbol is the second time unit.

[0226] The first time unit includes M equal second time units, where M is a positive integer.

[0227] In the above embodiments, when the first parameter is greater than or equal to the first threshold, the length of the CP is close to the length of an OOK symbol level. Therefore, the waveform generation method of the first message can adopt the OOK waveform generation method without CP, thereby reducing the impact of CP on the waveform reception performance of the first message.

[0228] In conjunction with some embodiments of the third aspect, in some embodiments, the first indication information is carried in an inventory trigger message, which is used to trigger a second type of device to participate in inventory.

[0229] In conjunction with some embodiments of the third aspect, in some embodiments, the waveform generation method used for the inventory trigger message is a predefined waveform generation method.

[0230] In the above embodiments, the waveform generation method used for the inventory trigger message is a predefined waveform generation method, which enables the second type of device to receive the inventory trigger message according to the predefined waveform generation method, thereby obtaining the first indication information and determining the waveform generation method of the first message according to the first indication information.

[0231] According to a fourth aspect of the embodiments of this disclosure, a communication method is provided, performed by a second type of device, the method comprising:

[0232] Receive first indication information, which is used to indicate the value range of the first parameter;

[0233] Wherein, the first parameter is the number of OOK symbols contained in each OFDM symbol carrying the first message, or the first parameter is the number of OOK symbols contained in each OFDM symbol carrying the first message and the CP corresponding to each OFDM symbol; the first message is a message from the first device.

[0234] In the above embodiments, the first device sends a first instruction message, enabling the second type of device to determine the value range of the first parameter based on the first instruction message, thereby determining the waveform generation method of the first message based on the value range of the first parameter, and receiving the first message sent by the first device based on the waveform generation method of the first message.

[0235] In conjunction with some embodiments of the fourth aspect, in some embodiments, the range of values ​​for the first parameter is associated with at least one of the following:

[0236] The capabilities of the second type of device include: the ability of the second type of device to process or receive OOK waveforms containing CP, or the ability of the second type of device to process or receive OOK waveforms not containing CP;

[0237] The waveform generation methods for the first message include: an OOK waveform generation method that includes CP, or an OOK waveform generation method that does not include CP.

[0238] In the above embodiments, if the value range of the first parameter is related to the capabilities of the second type of device, the first device can inventory the second type of devices with different capabilities through the first message and can control the access of the second type of devices with different capabilities; if the value range of the first parameter is related to the waveform generation method of the first message, the second type of device can determine the value range of the waveform generation method of the first message according to the value range of the first parameter, and thus receive the first message sent by the first device according to the waveform generation method of the first message.

[0239] In conjunction with some embodiments of the fourth aspect, in some embodiments, the range of values ​​for the first parameter is associated with the capabilities of the second type of device, including:

[0240] The first parameter is less than or equal to the first threshold, and the second type of device has the ability to process or receive OOK waveforms containing CP;

[0241] or,

[0242] The first parameter is greater than or equal to the first threshold, and the second type of device has the ability to process or receive OOK waveforms that do not contain CP.

[0243] In the above embodiments, the value range of the first parameter is associated with the capability of the second type of device, and the second type of device can determine whether to participate in this round of inventory based on the value range of the first parameter.

[0244] In conjunction with some embodiments of the fourth aspect, in some embodiments, where the first parameter is less than or equal to a first threshold, the method further includes:

[0245] Send a second message in response to the first message to the first device, wherein the second type of device has the ability to process or receive an OOK waveform containing CP.

[0246] In the above embodiments, since the range of the first parameter is related to the capability of the second type of device, when the first parameter is less than or equal to the first threshold, the first device can perform inventory of the second type of device through the first message. The second type of device has the capability to process or receive OOK waveforms containing CP. Accordingly, the second type of device responds to the first message and sends a second message to the first device, thereby being able to participate in this round of inventory.

[0247] In conjunction with some embodiments of the fourth aspect, in some embodiments, where the first parameter is greater than or equal to a first threshold, the method further includes:

[0248] Send a second message in response to the first message to the first device, wherein the second type of device has the ability to process or receive OOK waveforms that do not contain CP.

[0249] In the above embodiments, since the range of the first parameter is related to the capability of the second type of device, when the first parameter is greater than or equal to the first threshold, the first device can perform inventory of the second type of device through the first message. The second type of device has the capability to process or receive OOK waveforms that do not contain CP. Accordingly, the second type of device responds to the first message and sends a second message to the first device, thereby being able to participate in this round of inventory.

[0250] In conjunction with some embodiments of the fourth aspect, in some embodiments, the value range of the first parameter is associated with the waveform generation method of the first message, including:

[0251] If the first parameter is less than or equal to the first threshold, the waveform of the first message is generated in the OOK waveform generation method that includes CP.

[0252] or,

[0253] The first parameter is greater than or equal to the first threshold, and the waveform of the first message is generated in the OOK waveform generation method without CP.

[0254] In the above embodiments, when the first parameter is less than or equal to the first threshold, the length of the CP is much smaller than the length of an OOK symbol level. Therefore, the waveform generation method of the first message can adopt the OOK waveform generation method that includes the CP to improve coverage performance. When the first parameter is greater than or equal to the first threshold, the length of the CP is close to the length of an OOK symbol level. Therefore, the waveform generation method of the first message can adopt the OOK waveform generation method that does not include the CP, thereby reducing the impact of the CP on the waveform reception performance of the first message.

[0255] In conjunction with some embodiments of the fourth aspect, in some embodiments, the value of the first parameter belongs to a first set, and the first set includes at least one of the following:

[0256] 1,2,4,6,8,12,16,24,32.

[0257] In conjunction with some embodiments of the fourth aspect, in some embodiments, the value of the first threshold is one of the following:

[0258] 6,8,12,16.

[0259] In the above embodiments, by setting an appropriate set of values ​​for the first parameter and the value of the first threshold, it helps the second type of device determine whether to participate in this round of inventory based on the value range of the first parameter, and helps the second type of device determine the waveform generation method of the first message based on the value range of the first parameter.

[0260] In conjunction with some embodiments of the fourth aspect, in some embodiments, the waveform generation method of the first message is an OOK waveform generation method including CP, including:

[0261] The first message is carried on P OFDM symbols and the corresponding CPs of P OFDM symbols. The duration of each OFDM symbol and its corresponding CP is the first time unit, and the duration of each OOK symbol contained in each OFDM symbol is the second time unit.

[0262] The first time unit includes N equal second time units, where N is a positive integer.

[0263] In the above embodiments, when the first parameter is less than or equal to the first threshold, the length of CP is much smaller than the length of an OOK symbol level. Therefore, the waveform generation method of the first message can adopt the OOK waveform generation method that includes CP, thereby improving coverage performance.

[0264] In conjunction with some embodiments of the fourth aspect, in some embodiments, the waveform generation method of the first message is an OOK waveform generation method that does not include CP, including:

[0265] The first message is carried on Q OFDM symbols. The duration of each OFDM symbol is the first time unit, and the duration of each OOK symbol contained in each OFDM symbol is the second time unit.

[0266] The first time unit includes M equal second time units, where M is a positive integer.

[0267] In the above embodiments, when the first parameter is greater than or equal to the first threshold, the length of the CP is close to the length of an OOK symbol level. Therefore, the waveform generation method of the first message can adopt the OOK waveform generation method without CP, thereby reducing the impact of CP on the waveform reception performance of the first message.

[0268] In conjunction with some embodiments of the fourth aspect, in some embodiments, the first indication information is carried in an inventory trigger message, which is used to trigger a second type of device to participate in inventory.

[0269] In conjunction with some embodiments of the fourth aspect, in some embodiments, the waveform generation method used for the inventory trigger message is a predefined waveform generation method.

[0270] In the above embodiments, the waveform generation method used for the inventory trigger message is a predefined waveform generation method, which enables the second type of device to receive the inventory trigger message according to the predefined waveform generation method, thereby obtaining the first indication information and determining the waveform generation method of the first message according to the first indication information.

[0271] According to a fifth aspect of the embodiments of this disclosure, a first device is provided, comprising:

[0272] The transceiver module is used to send first indication information, which indicates the waveform generation method of the first message;

[0273] The first message is a message sent from the first device to the second type of device; the waveform of the first message is generated in either the OOK waveform generation method that includes CP or the OOK waveform generation method that does not include CP.

[0274] According to a sixth aspect of the embodiments of this disclosure, a second type of device is provided, comprising:

[0275] The transceiver module is used to receive first indication information, which indicates the waveform generation method of the first message from the first device.

[0276] The waveform generation method for the first message is either an OOK waveform generation method that includes CP or an OOK waveform generation method that does not include CP.

[0277] According to a seventh aspect of the embodiments of this disclosure, a first device is provided, comprising:

[0278] The transceiver module is used to send first indication information, which indicates the range of values ​​for the first parameter.

[0279] Wherein, the first parameter is the number of OOK symbols contained in each OFDM symbol carrying the first message, or the first parameter is the number of OOK symbols contained in each OFDM symbol carrying the first message and the CP corresponding to each OFDM symbol; the first message is a message sent by the first device to the second type of device.

[0280] According to an eighth aspect of the embodiments of this disclosure, a second type of device is provided, comprising:

[0281] The transceiver module is used to receive first indication information, which indicates the range of values ​​for the first parameter.

[0282] Wherein, the first parameter is the number of OOK symbols contained in each OFDM symbol carrying the first message, or the first parameter is the number of OOK symbols contained in each OFDM symbol carrying the first message and the CP corresponding to each OFDM symbol; the first message is a message from the first device.

[0283] According to a ninth aspect of the present disclosure, a communication device is provided for performing the method described in the first aspect and optional implementations of the first aspect, or for performing the method described in the second aspect and optional implementations of the second aspect, or for performing the method described in the third aspect and optional implementations of the third aspect, or for performing the method described in the fourth aspect and optional implementations of the fourth aspect.

[0284] According to a tenth aspect of the present disclosure, a communication system is provided, including a first device and a second type of device, wherein the first device is configured to implement the method described in the first aspect and optional implementations of the first aspect, and the second type of device is configured to implement the method described in the second aspect and optional implementations of the second aspect.

[0285] According to an eleventh aspect of the present disclosure, a communication system is provided, including a first device and a second type of device, wherein the first device is configured to implement the method described in the third aspect and optional implementations of the third aspect, and the second type of device is configured to implement the method described in the fourth aspect and optional implementations of the fourth aspect.

[0286] According to a twelfth aspect of the present disclosure, a storage medium is provided that stores instructions, which, when executed on a communication device, cause the communication device to perform the method described in the first aspect and its optional implementations, or cause the communication device to perform the method described in the second aspect and its optional implementations, or cause the communication device to perform the method described in the third aspect and its optional implementations, or cause the communication device to perform the method described in the fourth aspect and its optional implementations.

[0287] According to a thirteenth aspect of the present disclosure, a program product is provided, comprising at least one of a program and instructions. When the program and instructions are executed by a communication device, the program implements the method described in the first aspect and its optional implementations, or implements the method described in the second aspect and its optional implementations, or implements the method described in the third aspect and its optional implementations, or implements the method described in the fourth aspect and its optional implementations.

[0288] According to a fourteenth aspect of the present disclosure, a computer program is provided that, when run on a computer, causes the computer to perform the method as described in the first aspect and optional implementations of the first aspect, or the method described in the second aspect and optional implementations of the second aspect, or the method described in the third aspect and optional implementations of the third aspect, or the method described in the fourth aspect and optional implementations of the fourth aspect.

[0289] According to a fifteenth aspect of the present disclosure, a chip or chip system is provided. The chip or chip system includes processing circuitry configured to perform the methods described in the first aspect and its optional implementations, or the methods described in the second aspect and its optional implementations, or the methods described in the third aspect and its optional implementations, or the methods described in the fourth aspect and its optional implementations.

[0290] It is understood that the aforementioned first device, second type device, communication system, storage medium, program product, etc., are all used to execute the methods proposed in the embodiments of this disclosure. Therefore, the beneficial effects they can achieve can be referred to the beneficial effects in the corresponding methods, and will not be repeated here.

[0291] This disclosure provides embodiments of a communication method, a first device, a second type of device, a communication system, a storage medium, and a program product. In some embodiments, the terms "communication method" and "method for indicating waveform generation mode" and "method for determining waveform generation mode" can be used interchangeably; the terms "communication device" and "device for indicating waveform generation mode" and "device for determining waveform generation mode" can be used interchangeably; and the terms "communication system" and "system for indicating waveform generation mode" and "system for determining waveform generation mode" can be used interchangeably.

[0292] This disclosure is not exhaustive, but merely illustrative of some embodiments, and is not intended to limit the scope of protection of this disclosure. Unless otherwise specified, each step in a particular embodiment can be implemented as an independent embodiment, and the steps can be arbitrarily combined. For example, a solution after removing some steps in a particular embodiment can also be implemented as an independent embodiment, and the order of the steps in a particular embodiment can be arbitrarily interchanged. Furthermore, the optional implementation methods in a particular embodiment can be arbitrarily combined; moreover, the embodiments can be arbitrarily combined, for example, some or all steps of different embodiments can be arbitrarily combined, and a particular embodiment can be arbitrarily combined with the optional implementation methods of other embodiments. In all embodiments of this disclosure, unless otherwise specified or logically conflicting, the terminology and / or descriptions between the embodiments are consistent and can be mutually referenced. Technical features in different embodiments can be combined to form new embodiments based on their inherent logical relationships.

[0293] The terminology used in the embodiments of this disclosure is for the purpose of describing particular embodiments only and is not intended to limit the scope of this disclosure.

[0294] In this embodiment of the disclosure, unless otherwise stated, elements expressed in the singular form, such as "a," "an," "the," "the," "the," "the," "the," "the," "this," etc., can mean "one and only one," or "one or more," "at least one," etc. For example, when using articles such as "a," "an," "the," etc. in translation, the noun following the article can be understood as either a singular expression or a plural expression.

[0295] In the embodiments disclosed herein, "multiple" refers to two or more.

[0296] In some embodiments, the terms “at least one of A or B, at least one of A and B”, “one or more”, “a plurality of”, “multiple”, etc., may be used interchangeably.

[0297] In some embodiments, the notation "at least one of A and B", "A and / or B", "A in one case, B in another", "in response to one case A, in response to another case B", etc., may include the following technical solutions depending on the situation: in some embodiments, A (execute A regardless of whether there is a branch B); in some embodiments, B (execute B regardless of whether there is a branch A); in some embodiments, execution is selected from A and B (A and B are selectively executed); in some embodiments, both A and B are executed. The same applies when there are more branches such as A, B, C, etc.

[0298] In some embodiments, the notation "A or B" may include the following technical solutions, depending on the situation: in some embodiments, A (execute A regardless of whether a branch B exists); in some embodiments, B (execute B regardless of whether a branch A exists); in some embodiments, execution is selected from A and B (A and B are selectively executed). The same applies when there are more branches such as A, B, and C.

[0299] The prefixes "first," "second," etc., used in the embodiments of this disclosure are merely for distinguishing different descriptive objects and do not impose restrictions on the position, order, priority, quantity, or content of the descriptive objects. The description of the descriptive objects is found in the claims or the context of the embodiments, and the use of prefixes should not constitute unnecessary restrictions. For example, if the descriptive object is a "field," the ordinal numbers preceding "field" in "first field" and "second field" do not restrict the position or order of the "fields." "First" and "second" do not restrict whether the "fields" they modify are in the same message, nor do they restrict the order of "first field" and "second field." Similarly, if the descriptive object is a "level," the ordinal numbers preceding "level" in "first level" and "second level" do not restrict the priority between "levels." Furthermore, the number of descriptive objects is not limited by ordinal numbers and can be one or more. For example, in "first device," the number of "devices" can be one or more. Furthermore, the objects modified by different prefixes can be the same or different. For example, if the object being described is "device", then "first device" and "second device" can be the same device or different devices, and their types can be the same or different. Similarly, if the object being described is "information", then "first information" and "second information" can be the same information or different information, and their content can be the same or different.

[0300] In some embodiments, “including A,” “containing A,” “for indicating A,” and “carrying A” can be interpreted as directly carrying A or indirectly indicating A.

[0301] In some embodiments, terms such as “in response to…”, “in response to determining…”, “in the case of…”, “when…”, “when…”, “if…”, etc. can be used interchangeably. These descriptions all refer to the device making a corresponding action under certain objective circumstances. They do not necessarily limit the time, nor do they require the device to make a judgment action when implementing it, nor do they mean that there must be other limitations.

[0302] In some embodiments, the terms “greater than,” “greater than or equal to,” “not less than,” “more than,” “more than or equal to,” “not less than,” “higher than,” “higher than or equal to,” “not lower than,” and “above” can be used interchangeably, as can the terms “less than,” “less than or equal to,” “not greater than,” “less than,” “less than or equal to,” “not more than,” “lower than,” “lower than or equal to,” “not higher than,” and “below”.

[0303] In some embodiments, devices, etc., may be interpreted as physical or virtual, and their names are not limited to those described in the embodiments. Terms such as “device,” “equipment,” “circuit,” “network element,” “network function,” “network device,” “function,” “node,” “unit,” “section,” “system,” “network,” “chip,” “chip system,” “entity,” and “subject” are interchangeable.

[0304] In some embodiments, "network" can be interpreted as devices included in a network (e.g., access network devices, core network devices, etc.).

[0305] In some embodiments, the terms "access network device (AN device)," "radio access network device (RAN device)," "base station (BS)," "radio base station," "fixed station," "node," "access point," "transmission point (TP)," "reception point (RP)," "transmission / reception point (TRP)," "panel," "antenna panel," "antenna array," "cell," "macro cell," "small cell," "femto cell," "pico cell," "sector," "cell group," "serving cell," "carrier," "component carrier," and "bandwidth part (BWP)" can be used interchangeably.

[0306] In some embodiments, the terms "terminal", "terminal device", "user equipment (UE)", "user terminal", "mobile station (MS)", "mobile terminal (MT)", "subscriber station", "mobile unit", "subscriber unit", "wireless unit", "remote unit", "mobile device", "wireless device", "wireless communication device", "remote device", "mobile subscriber station", "access terminal", "mobile terminal", "wireless terminal", "remote terminal", "handset", "user agent", "mobile client", and "client" can be used interchangeably.

[0307] In some embodiments, access network devices, core network devices, or network devices can be replaced with terminal devices. For example, embodiments of this disclosure can also be applied to structures where communication between access network devices, core network devices, or network devices and terminal devices is replaced with communication between multiple terminal devices (e.g., device-to-device (D2D), vehicle-to-everything (V2X), etc.). In this case, the terminal devices can also be configured to have all or part of the functions of the access network devices. Furthermore, terms such as "uplink" and "downlink" can be replaced with terms corresponding to communication between terminal devices (e.g., "sidelink"). For example, uplink channel, downlink channel, etc., can be replaced with sidelink channel, and uplink link, downlink, etc., can be replaced with sidelink link.

[0308] In some embodiments, the terminal device may be replaced by an access network device, a core network device, or a network device. In this case, the access network device, core network device, or network device may also be configured to have all or some of the functions of the terminal device.

[0309] In some embodiments, the acquisition of data, information, etc., may comply with the laws and regulations of the country where the location is situated.

[0310] In some embodiments, data, information, etc., may be obtained with the user's consent.

[0311] Furthermore, each element, each row, or each column in the table of this disclosure can be implemented as an independent embodiment, and any combination of any element, any row, or any column can also be implemented as an independent embodiment.

[0312] Figure 1a is a schematic diagram of the architecture of a communication system according to an embodiment of the present disclosure. As shown in Figure 1a, the communication system 1100 includes a first device 1101 and a second type device 1102.

[0313] In some embodiments, the first device 1101 may be, for example, a terminal device, a network device, etc. In some embodiments, the second type of device 1102 may be, for example, an A-IoT device, etc.

[0314] In some embodiments, the terminal device includes, but is not limited to, at least one of the following: mobile phone, wearable device, Internet of Things device, car with communication function, smart car, tablet computer, computer with wireless transceiver function, virtual reality (VR) terminal device, augmented reality (AR) terminal device, wireless terminal device in industrial control, wireless terminal device in self-driving, wireless terminal device in remote medical surgery, wireless terminal device in smart grid, wireless terminal device in transportation safety, wireless terminal device in smart city, and wireless terminal device in smart home.

[0315] In some embodiments, the network device may include at least one of an access network device and a core network device.

[0316] In some embodiments, the access network device is, for example, a node or device that connects a terminal device to a wireless network. The access network device may include at least one of the following in a 5G communication system: evolved Node B (eNB), next-generation eNB (ng-eNB), next-generation Node B (gNB), node B (NB), home node B (HNB), home evolved node B (HeNB), radio backhaul device, radio network controller (RNC), base station controller (BSC), base transceiver station (BTS), base band unit (BBU), mobile switching center, base station in a 6G communication system, open RAN, cloud RAN, base station in other communication systems, and access node in a Wi-Fi system, but is not limited thereto.

[0317] In some embodiments, the technical solutions of this disclosure can be applied to the Open RAN architecture. In this case, the interfaces between or within access network devices involved in the embodiments of this disclosure can be transformed into internal interfaces of Open RAN. The processes and information interactions between these internal interfaces can be implemented by software or programs.

[0318] In some embodiments, the access network device may be composed of a central unit (CU) and a distributed unit (DU). The CU may also be called a control unit. The CU-DU structure can separate the protocol layer of the access network device. Some of the protocol layer functions are centrally controlled by the CU, while the remaining part or all of the protocol layer functions are distributed in the DU and centrally controlled by the CU. However, this is not the only possibility.

[0319] In some embodiments, the core network equipment may be a single device, including a first network element, a second network element, etc., or it may be multiple devices or a group of devices, each including all or part of the first network element, the second network element, etc. Network elements may be virtual or physical. The core network may include, for example, at least one of the Evolved Packet Core (EPC), 5G Core Network (5GCN), and Next Generation Core (NGC).

[0320] It is understood that the communication system described in this disclosure is for the purpose of more clearly illustrating the technical solutions of this disclosure, and does not constitute a limitation on the technical solutions proposed in this disclosure. As those skilled in the art will know, with the evolution of system architecture and the emergence of new business scenarios, the technical solutions proposed in this disclosure are also applicable to similar technical problems.

[0321] The following embodiments of this disclosure can be applied to the communication system 1100 shown in FIG1a, or to some of the main bodies, but are not limited thereto. The main bodies shown in FIG1a are illustrative. The communication system may include all or some of the main bodies in FIG1a, or it may include other main bodies outside of FIG1a. The number and form of each main body are arbitrary. Each main body may be physical or virtual. The connection relationship between the main bodies is illustrative. The main bodies may not be connected or may be connected. The connection may be in any way, such as direct connection or indirect connection, wired connection or wireless connection.

[0322] The embodiments disclosed herein can be applied to Long Term Evolution (LTE), LTE-Advanced (LTE-A), LTE-Beyond (LTE-B), SUPER 3G, IMT-Advanced, 4th generation mobile communication system (4G), 5th generation mobile communication system (5G), 5G new radio (NR), Future Radio Access (FRA), New-Radio Access Technology (RAT), New Radio (NR), New radio access (NX), Future generation radio access (FX), Global System for Mobile communications (GSM), CDMA2000, Ultra Mobile Broadband (UMB), IEEE 802.11 (Wi-Fi), IEEE 802.16 (WiMAX), and IEEE 802.20, Ultra-Wideband (UWB), Bluetooth (a registered trademark), Public Land Mobile Network (PLMN) networks, Device-to-Device (D2D) systems, Machine-to-Machine (M2M) systems, Internet of Things (IoT) systems, Vehicle-to-Everything (V2X) systems, systems utilizing other communication methods, and next-generation systems built upon them, etc. Furthermore, multiple systems can be combined (e.g., a combination of LTE or LTE-A with 5G).

[0323] With the rapid development of mobile communication technology, digital mobile communication has evolved through 2G, 3G, 4G, and 5G, effectively meeting people's needs in voice communication, digital mobile communication, and mobile broadband internet communication. The demand for Internet of Things (IoT) communication is gradually emerging, leading to a series of IoT technologies such as Machine-Type Communications (MTC), Narrow Band IoT (NB-IoT), and Reduced Capability UE (RedCap UE). MTC and NB-IoT significantly reduce the cost of IoT terminals by employing technologies such as low bandwidth, single antenna, reduced peak data rate, half-duplex, and reduced transmit power. Furthermore, the introduction of enhanced discontinuous reception (eDRX) and power saving mode (PSM) greatly reduces the power consumption of IoT terminals. Simultaneously, MTC and NB-IoT can support a large number of IoT terminals accessing the network, thus meeting the demand for massive connectivity.

[0324] NB-IoT is a low-power wide-area network technology characterized by low cost, low power consumption, strong coverage, and massive connectivity. NB-IoT is largely based on the non-backward-compatible evolved universal terrestrial radio access (E-UTRA) standard, with a coverage target of minimum coupling loss (MCL) of 164dB, significantly enhancing indoor coverage and supporting a large number of low-throughput, low-latency-sensitive devices. NB-IoT supports three operating modes: in-band, standalone, and guard-band. Its uplink and downlink RF bandwidths are both 180kHz. Downlink uses Orthogonal Frequency Division Multiple Access (OFDMA) technology based on a 15kHz subcarrier spacing, while uplink uses Single-Carrier Frequency Division Multiple Access (SC-FDMA) technology, supporting both single-tone and multi-tone transmission. The enhanced version of NB-IoT supports a wealth of functions such as multi-carrier, positioning, multicast, wake-up signal, and fast small data transmission, and can coexist with LTE and NR systems.

[0325] Enhanced Machine-Type Communication (eMTC) is an enhanced version of LTE Machine-to-Machine (LTE-M), an IoT technology evolved from LTE, and a low-cost, low-power wide-area network technology. Compared to NB-IoT, eMTC has slightly weaker coverage, with a coverage target MCL of 156dB, but it can support higher transmission rates, some mobility, and voice services. eMTC has an uplink and downlink RF bandwidth of 1.4MHz and can support a maximum peak rate of 1Mbps.

[0326] RedCap is a new technology standard based on 5G NR, representing a lightweight version of 5G. In the large-scale industrial wireless sensor network (IWSN) use cases described by 5G requirements, there are not only ultra-reliable and low-latency communication (URLLC) services with extremely high requirements, but also relatively low-end applications requiring small device size, support for fully wireless transmission, and battery life of several years. These applications have higher requirements than low-power wide-area networks (LPWA) (i.e., LTE-M / NB-IoT), but lower than URLLC and enhanced mobile broadband (eMBB). Furthermore, surveillance cameras in smart city scenarios requiring 5G, as well as wearable device use cases such as smartwatches, electronic health-related devices, and medical monitoring equipment, all exhibit characteristics of small device size, simplified functionality, and the need to connect to the 5G radio access network and core network, urgently necessitating the introduction of lower-cost, simplified terminal devices.

[0327] Currently, the Internet of Things (IoT) based on NB-IoT and eMTC technologies has been widely used, such as in smart grids, smart parking, smart transportation / logistics, and smart energy management systems, covering many vertical fields such as smart cities, smart homes, and smart factories.

[0328] A-IoT technology is an important branch of the Internet of Things (IoT). The outstanding technological advantage of A-IoT communication is that it is battery-free.

[0329] Figure 1b is a schematic diagram of A-IoT communication provided in an embodiment of this disclosure. Please refer to Figure 1b. The A-IoT device mainly combines radio frequency energy harvesting technology, backscattering technology and low power computing technology to achieve power supply.

[0330] As shown in Figure 1b, A-IoT devices obtain the energy to drive themselves through radio frequency (RF) energy harvesting, and use low-power computing and backscattering technology to demodulate and modulate signals. The core of RF energy harvesting is converting RF energy into DC. This energy can be stored in energy storage units (such as capacitors) or directly used to drive logic circuits, digital chips, or sensors, completing functions such as modulation and transmission of backscattered signals, and acquisition and processing of sensor information.

[0331] In a backscatter-based A-IoT communication system, the backscatter transmitter modulates and reflects the received radio frequency (RF) signal to transmit data, rather than generating its own RF signal.

[0332] The basic principle of energy harvesting is to collect electromagnetic wave energy from space through electromagnetic induction. The essence of radio frequency (RF) energy harvesting is converting RF energy into DC voltage. In A-IoT communication, the core requirement for energy harvesting is to effectively use the harvested energy to drive load circuits (low-power computing, sensors, etc.) to achieve battery-free communication.

[0333] Due to electromagnetic wave multipath propagation effects, uneven energy distribution in space and time, and various interferences, the radio frequency energy density that can be collected in a wireless environment is extremely low (less than 10 nW / cm²). The radio frequency energy that can be effectively collected needs to meet a certain input power requirement. To drive logic circuits or chips and other computing units, the DC voltage converted from the collected energy generally needs to meet the minimum output voltage requirement and be converted into a stable DC voltage. Therefore, it is necessary to improve energy collection efficiency, especially under low input voltage conditions, so that the collected energy can still drive the circuit.

[0334] A radio frequency (RF) energy harvesting system mainly consists of a receiving antenna, an RF rectifier, and an energy storage module. The receiving antenna collects electromagnetic wave energy from the environment and then inputs it as an RF AC signal to the rectifier circuit. The rectifier circuit converts the RF AC energy into DC energy, which is then stored using a battery or capacitor to provide DC power to subsequent circuits and application loads. The receiving antenna and rectifier circuit are the core components of the system, directly determining the power and energy conversion efficiency obtainable from RF energy harvesting.

[0335] Antennas are responsible for collecting radio frequency (RF) energy in free space. To obtain more power, it is usually necessary to collect energy over the widest possible frequency band. In typical environments, the direction of arrival and polarization of RF energy signals are uncertain; therefore, designing omnidirectional or circularly polarized antennas can reduce sensitivity to antenna placement angles. However, in other applications, such as near base stations or repeaters, where the direction and polarization of the RF energy source are known, using directional antennas or linearly polarized receiving methods can achieve higher reception efficiency and power.

[0336] The key technologies for radio frequency energy harvesting antennas include the following aspects:

[0337] 1. Miniaturized antenna technology

[0338] Radio frequency (RF) energy harvesting technology, used in sensors and wearable electronics, is highly sensitive to the size of the rectifier antenna. Therefore, miniaturized antennas are required to meet the overall size requirements of terminal devices. Antenna size depends on the electromagnetic wavelength, and for existing RF energy bands in the environment (e.g., 0.7–2.5 GHz), the wavelength is relatively well-defined. Bending technology, loading technology, and fractal technology are effective ways to achieve antenna miniaturization.

[0339] 2. Impedance matching technology

[0340] To ensure that the RF power collected by the antenna is transmitted to the rectifier circuit, a good impedance matching network needs to be designed, while minimizing the impact on the antenna's size, radiation characteristics, and other aspects.

[0341] 3. Multi-frequency and wideband technology

[0342] Radio frequency (RF) signals in more frequency bands contain more energy, requiring the antenna to operate over a wider frequency range to collect more RF energy. However, the operating frequency band must match the rectifier circuit to prevent high-order harmonics from the rectifier circuit from being reflected by the antenna, causing power loss.

[0343] The conversion of radio frequency (RF) energy to DC power is significantly affected by different circuit designs and processes. Proper use of rectifiers allows for better conversion of RF energy into stable DC voltage. However, when the output voltage is generally low, further DC-DC conversion and boosting are needed to generate a voltage level suitable for driving digital logic circuits. Voltage regulators and voltage monitors are also commonly used to assist in voltage boosting and stabilization, often employing cascaded diode-capacitor methods to raise the voltage to a usable level. Diode-based rectifier circuits are the most basic energy harvesting method. Devices using discrete devices and Complementary Metal-Oxide-Semiconductor (CMOS) processes have significantly different requirements for RF input power. Due to the custom electronics of CMOS technology, compared to microcontrollers or other external digital devices, they are often more efficient and operate at lower voltages, allowing for input signal energy levels as low as -20dBm or even better.

[0344] The process of radio frequency energy harvesting was described in the above embodiments. The backscattering process will be described below with reference to Figure 1c.

[0345] Backscatter is a wireless technology that enables signal transmission and encoding without an active transmitter. Similar to radar, when electromagnetic waves reach the surface of an object, a portion is reflected. The strength of the reflected signal depends on the object's shape, material, and distance. From a radar perspective, each object has its radar cross-section (RCS) and tag. By altering the RCS, the reflected signal can be modulated. The backscatter transmitter modulates the received RF signal to transmit data without generating its own RF signal.

[0346] In related technologies, backscatter communication requires placing the backscatter transmitter near its radio frequency (RF) source, thus limiting the device's usability and coverage area. The backscatter receiver and RF source are located in the same device, i.e., a reader, which can lead to self-interference between the receiving and transmitting antennas, thereby reducing communication performance. Furthermore, the backscatter transmitter only transmits data when interrogated by the backscatter receiver. Due to these limitations, backscatter communication has not been widely used in data-intensive wireless communication systems.

[0347] Ambient Backscatter Communication (AmBC) effectively addresses the aforementioned limitations of backscatter communication systems. An AmBC system typically comprises three parts: an ambient radio-frequency (RF) source, a backscatter device (BD), and a reader / writer. In an AmBC system, backscatter devices can communicate with each other using wireless signals broadcast from ambient RF sources (e.g., TV towers, FM towers, cellular base stations, and Wi-Fi access points). Furthermore, by separating the carrier transmitter and backscatter receiver, the number of RF components in the backscatter device is minimized, and the device can operate proactively; that is, the backscatter transmitter can send data without receiver activation once sufficient energy has been harvested from the RF source.

[0348] Figure 1c is a schematic diagram of backscatter communication provided in an embodiment of this disclosure. As shown in Figure 1c, an A-IoT device (such as a backscatter tag) receives a carrier signal sent by a reader (as shown in Figure 1c), and collects energy through an RF energy harvesting module to power a low-power processing module. After acquiring energy, the backscatter tag drives the corresponding circuit to modulate the incoming wave signal and perform backscattering.

[0349] In backscatter communication systems, load modulation is a commonly used data transmission method for electronic tags. Load modulation involves adjusting the electrical parameters (such as resistance or capacitance) of the electronic tag's oscillation circuit according to the rhythm of the data stream, thereby changing the magnitude and phase of the electronic tag's impedance and completing the modulation process.

[0350] Load modulation techniques mainly include two methods: resistive load modulation and capacitive load modulation. Figure 1d is a circuit diagram of resistive load modulation provided in an embodiment of this disclosure. As shown in Figure 1d, in resistive load modulation, the load (R in Figure 1d) is... L A resistor, called the load modulation resistor (R3 in Figure 1d), is connected in parallel with the load. This resistor turns on and off according to the clock of the data stream, and the switching of switch S is controlled by binary data encoding. In capacitive load modulation, a capacitor (C1 in Figure 1d) is connected in parallel with the load, replacing the load modulation resistor controlled by binary data encoding. This circuit also includes resistor R2, capacitor C2, and inductors L1 and L2.

[0351] Taking the process of Amplitude Shift Keying (ASK) modulation using resistance modulation as an example, Figure 1e is a schematic diagram of the ASK modulation process provided in this embodiment. As shown in Figure 1e, the load modulator includes load 1 and load 2. The terminal device can receive the carrier signal waveform through the antenna and perform backscattering to obtain the backscattered signal. The terminal device can switch between absorption and reflection states by switching the load reflection coefficient. In the absorption state, that is, the terminal device achieves impedance matching, and the radio frequency signal is completely absorbed by the terminal device, so that the terminal device does not radiate radio frequency signals into space. The signal received by the receiving side will be a low-level signal, and this state can represent bit '0'. Conversely, in the reflection state, that is, the terminal device switches the circuit impedance, making the circuit impedance mismatched, and part of the RF signal is reflected. The signal received by the receiving side will be a high-level signal, so this state represents bit "1". The ASK modulation signal process is shown in Figure 1e. It can be seen that the terminal device can achieve ASK modulation of the incident radio frequency signal in a simple impedance switching manner, thereby realizing communication with the receiver. From the receiver's perspective, the ASK signal can be detected by a low-complexity envelope detection and comparator.

[0352] Similarly, terminal devices can also change the circuit tuning frequency by adjusting the circuit's capacitance, causing the frequency of the signal radiated by the terminal device to change with the capacitance, thereby achieving Frequency Shift Keying (FSK) modulation. Although FSK requires additional residual frequency offset estimation processing compared to ASK, it outperforms ASK in terms of bit error rate (BER) performance. Furthermore, FSK allows for frequency division among multiple devices.

[0353] Therefore, backscatter communication cleverly utilizes impedance modulation to achieve signal modulation and transmission with extremely low complexity. In contrast, backscatter terminal devices do not require complex RF structures such as power amplifiers (PAs), high-precision crystal oscillators, duplexers, and high-precision filters. They also do not require complex baseband processing; for example, they only need to perform envelope detection of the signal without complex channel estimation and equalization calculations. Thus, backscatter technology makes the implementation of simple terminal devices possible.

[0354] Thanks to key technologies such as radio frequency energy harvesting, backscattering, and low-power computing, A-IoT devices can operate without batteries, supporting extremely low hardware complexity and meeting the demands for ultra-low power consumption, extremely small size, and extremely low cost. Therefore, A-IoT communication has significant advantages in a wide range of application areas, such as industrial sensor networks, intelligent transportation, smart logistics, smart warehousing, smart agriculture, smart cities, and the energy sector for vertical industries, and smart wearables, smart homes, and healthcare for individual consumers, among others.

[0355] For example, A-IoT communication can be applied to logistics and warehousing scenarios.

[0356] Logistics is a crucial link in the commodity circulation supply chain, and warehousing is a core component of modern logistics. In logistics and warehousing applications, a large number of parcels / goods need to be frequently transferred, stored, loaded, unloaded, and inventoried at logistics stations or warehouses. Along with warehouse ordering, goods receiving, goods management, and goods issuing, a large amount of warehousing information is generated. This information is generally characterized by frequent data retrieval operations and large data volumes.

[0357] To digitally manage logistics parcels / goods and improve logistics and warehousing efficiency, it's common practice to affix tags to the packaging of parcels / goods for acquiring logistics information and managing the entire logistics process. Therefore, compact terminal devices are more advantageous. However, due to the sheer volume of goods, courier or warehouse suppliers can only accept extremely low-cost communication terminal devices. The warehousing and logistics industry involves complex processes and numerous steps. Currently, using tags based on radio frequency identification (RFID) technology enables electronic recording, querying, and tracking of goods. However, the workload remains enormous, requiring specialized equipment to read each tag sequentially. A-IoT devices, on the other hand, are characterized by extremely low cost, small size, maintenance-free operation, durability, and long lifespan. Utilizing A-IoT devices to record, store, and update goods information in logistics and warehousing, and building A-IoT-based logistics and warehousing systems, can significantly improve the efficiency of logistics and warehousing management, contributing to the realization of smart logistics and smart warehousing.

[0358] A-IoT devices typically take the form of simple electronic tags (also known as A-IoT tags, wireless tags, tags, etc.). Because they are generally used on a large scale (each item is tagged), cost, size, and power consumption are key considerations. A-IoT devices require no additional power source, do not require battery power, are small in size, facilitate large-scale applications, and can support communication ranges from tens to hundreds of meters.

[0359] For network devices, they can be flexibly deployed based on cellular network infrastructure. For example, network devices can be deployed at outdoor pole stations to provide basic coverage, or deployed or expanded on demand. For instance, the coverage distance requirement for a single station can be: >30m indoors, >100m outdoors; network devices read tags based on authorization to protect privacy and data security; network devices can detect a large number of tags simultaneously (e.g., thousands per second).

[0360] Specifically, A-IoT technology can achieve smart warehouse management and improve warehouse efficiency and productivity in the following ways:

[0361] Batch reading: A-IoT technology supports a larger number of tags to be read. When goods arrive at the warehouse, the tags attached to the goods can be read in batches (e.g., thousands of tags per second) to accurately obtain product information, such as size / weight, manufacturer, expiration date, serial number, production line, etc., thereby helping to improve the efficiency and accuracy of logistics and warehousing.

[0362] Wide-range read / write: A-IoT technology supports a wider read / write range. Within a warehouse, deploying one or a few network devices can achieve tag communication coverage across the entire warehouse. Tags affixed to packages / goods store their basic information and location within the warehouse. By setting up a central network node within the warehouse, all packages / goods can be identified and inventoried quickly and promptly, facilitating timely understanding of inventory distribution and total volume, as well as enabling rapid forecasting of storage needs.

[0363] Handling Management: A-IoT technology enables tag location and information updates. As goods move within the warehouse, network devices can promptly identify and update tag information. When specific goods need to be picked, their location can be quickly pinpointed throughout the warehouse, significantly improving sorting efficiency.

[0364] For example, A-IoT communication can be applied to smart home scenarios.

[0365] Smart homes use residences as a platform to connect various devices in the home through the Internet of Things (IoT) to build an efficient and livable system. Smart homes utilize various functions such as automatic control of home appliances, lighting control, and temperature control. Sensors and small devices in smart homes can communicate based on backscattering technology.

[0366] A-IoT communication enables battery-free operation and eliminates the need for charging, significantly increasing the lifespan of corresponding devices in smart homes and reducing maintenance costs. Furthermore, due to the ultra-low cost, extremely small size, washability, and flexible / foldable form factor of A-IoT devices, they can be deployed very flexibly in smart homes, such as being embedded in walls, ceilings, and furniture, or attached to keys, passports, clothing, shoes, and so on.

[0367] Specifically, A-IoT technology can expand the application of smart home scenarios in the following ways:

[0368] Item Locator: The extremely small, washable, flexible and foldable A-IoT device can be attached to items in the home that are easily lost, such as keys, passports, bank cards, wallets, etc., so that lost items can be quickly located and found.

[0369] Environmental monitoring and alarms: A-IoT can be integrated with sensors to monitor indoor temperature, humidity, and other environmental factors, and can also be used for emergency alarms. The battery-free nature of A-IoT devices greatly increases their lifespan, achieving maintenance-free operation.

[0370] Intelligent control: A-IoT devices are integrated with sensors to enable intelligent control of home appliances, such as controlling the on / off of washing machines, air conditioners, televisions, curtains, etc. They can also provide more precise control for home robots by embedding / attaching tags on doors and furniture, and so on.

[0371] For example, A-IoT communication can be applied to smart wearable scenarios.

[0372] Smart wearables are consumer-centric, using IoT technology to wirelessly connect various devices worn by consumers. They have been applied in multiple fields (such as health monitoring, activity recognition, assistive living, mobile sensing, smart clothing, and indoor positioning). Common smart wearable devices include wrist-supported watches (including watches and wristbands), foot-supported shoes (including shoes, socks, or other leg-wearing products in the future), head-supported glasses (including glasses, helmets, headbands, etc.), as well as smart clothing, backpacks, canes, and accessories.

[0373] Battery-powered smart wearables often have short battery life. Enabling more functions further increases power consumption, requiring frequent charging to maintain normal operation. A-IoT devices, on the other hand, boast excellent characteristics such as extremely low cost, small size, extremely low power consumption (battery-free), flexibility, foldability, and washability, making them particularly suitable for smart wearable scenarios. Firstly, A-IoT devices harvest energy, eliminating the need for batteries and fundamentally solving the problem of frequent charging. Secondly, their low cost, small size, and soft, washable, and foldable materials significantly improve wearing comfort and user experience.

[0374] A-IoT devices take the form of electronic tags, which can integrate memory for data storage or sensors for information collection. From a wearable perspective, they should be small in size, battery-free, waterproof, and have a flexible, foldable design. Some applications of A-IoT technology in smart wearable scenarios include the following:

[0375] Health monitoring: A-IoT devices and sensors are integrated and embedded in wearable products such as wristbands, shoes, and socks to monitor health and provide timely feedback on a person's physical condition. Data such as sleep status, weight information, heart rate, and blood pressure are monitored and collected.

[0376] Location and tracking: A-IoT devices can be combined with location services for monitoring relevant populations. The passive and ultra-low power consumption of A-IoT devices can greatly extend their usage time.

[0377] Portable payment: Linked to personal information, it can be used for convenient payments such as taking public transportation, subways, and shopping.

[0378] The above embodiments introduced possible application scenarios of A-IoT communication. The RFID inventory process will be introduced below.

[0379] Figure 1f is a communication flowchart between the tag and the reader provided in an embodiment of this disclosure. As shown in Figure 1f, the signaling interactions between the reader and the tag mainly include the following:

[0380] SELECT command: The SELECT command is a command sent by the reader to select tags that meet specific conditions from multiple tags for subsequent operations. The SELECT command can change the tag's matching flag or storage flag.

[0381] Query command: The query command is sent by the reader and can be used to initiate a disk read cycle. The query command includes the time-domain parameter Q, which is used to allocate the number of time slots for a disk read cycle, specify the flag bits for that disk read cycle, and select the rate factor and encoding method for the backscatter link.

[0382] Random number RN16: RN16 is a 16-bit number randomly generated from the tag and used to temporarily identify the tag.

[0383] Acknowledge (ACK) command: The acknowledge command is sent by the reader to resolve conflicts. When the reader successfully receives the RN16 from the tag, it sends an ACK command containing the RN16 to obtain the tag's identifier.

[0384] Electronic product code (EPC): This is an identifier reported by the tag. If the reader successfully obtains the required EPC, the inventory process ends.

[0385] RFID technology has wide applications, but it also has its limitations. For example, RFID coverage is limited, interference can occur between readers, RFID cannot achieve full coverage and continuous connection, automatic inventory efficiency is low, and the frequency band is susceptible to interference, etc. In order to expand the application scenarios of passive IoT and adapt to the needs of some low-power devices, A-IoT devices have been introduced.

[0386] An A-IoT device is a device that operates powered by ambient energy harvested from radio waves, light, motion, heat, or other available environmental energy sources. A-IoT devices have little or no electrical power supply. Depending on whether an A-IoT device has energy storage capabilities and the ability to independently generate signals, A-IoT devices may include Device 1, Device 2a, and Device 2b, but the possibility of adding new A-IoT device types in the future cannot be ruled out.

[0387] Device 1: It has limited energy storage capacity and lacks the ability to independently generate or amplify signals; it transmits signals via backscattering. Its peak power consumption is approximately 1 microwatt (μW), and its initial sampling frequency offset (SFO) is as high as 10. x The value of ppm (x can be 4 or 5) does not have the ability to amplify downlink or uplink signals. The uplink transmission of this device is achieved by backscattering on an externally provided carrier.

[0388] Device 2a: It has a large energy storage capacity but lacks the ability to independently generate signals. It transmits signals via backscattering and can amplify the reflected signal using stored energy. Its peak power consumption does not exceed a few hundred μW, and its SFO is as high as 10. x The device has the capability of downlink signal amplification and / or uplink signal amplification. The uplink transmission of this device is achieved by backscattering on an externally provided carrier.

[0389] Device 2b: Possesses significant energy storage capacity and the ability to independently generate signals, using radio frequency devices for signal transmission. Its peak power consumption does not exceed several hundred μW, and its SFO is as high as 10. x ppm (x can be 4 or 5), has the capability of downlink signal amplification and / or uplink signal amplification. The uplink transmission of this device is implemented by the internal radio frequency devices.

[0390] The network topology of A-IoT technology is described below with reference to the accompanying diagram.

[0391] Figure 1g is a schematic diagram of the network topology of the A-IoT technology provided in this embodiment of the present disclosure. As shown in Figure 1g, the network topology includes network devices (e.g., base stations) and A-IoT devices, and the A-IoT devices communicate directly and bidirectionally with the network devices.

[0392] Communication between network devices and A-IoT devices includes A-IoT data and / or signaling. In this network topology, the network device that sends signaling to the A-IoT device and the network device that receives the A-IoT data sent by the A-IoT device can be the same network device or different network devices.

[0393] In this network topology, network devices function as readers, and A-IoT devices function as tags. Communication between A-IoT devices and network devices includes data and signaling.

[0394] Figure 1h is a second schematic diagram of the network topology of the A-IoT technology provided in the embodiments of this disclosure. As shown in Figure 1h, the network topology includes network devices, intermediate nodes and A-IoT devices. The A-IoT devices and network devices communicate bidirectionally through the intermediate nodes.

[0395] In this network topology, intermediate nodes can be relays, integrated access and backhaul (IAB) nodes, terminal devices, repeaters, etc., that enable environmental IoT. Intermediate nodes transmit information between network devices and A-IoT devices.

[0396] Taking the intermediate node as an example of a terminal device, the intermediate node and network device communicate bidirectionally via cellular communication. The intermediate node must support the ability to communicate with A-IoT devices. The intermediate node bidirectionally transmits data and signaling between the network device and Ambient IoT to complete the communication. In this network topology, the intermediate node is equivalent to a reader / writer.

[0397] In some embodiments, the deployment scenarios for A-IoT devices and readers mainly include the following:

[0398] Deployment Scenario 1: A-IoT devices are indoors, and network devices are indoors;

[0399] Deployment Scenario 2: A-IoT devices are indoors, and network devices are outdoors;

[0400] Deployment Scenario 3: A-IoT devices are indoors, and readers are terminal devices;

[0401] Deployment Scenario 4: A-IoT devices are outdoors, and network devices are outdoors;

[0402] Deployment Scenario 5: A-IoT devices are outdoors, and readers are terminal devices.

[0403] Based on the above introduction, the inventory process of A-IoT devices will be described below with reference to the accompanying diagrams.

[0404] Figure 1i is a schematic diagram of the A-IoT device inventory process provided in an embodiment of this disclosure. As shown in Figure 1i, the signaling involved in the A-IoT device inventory process mainly includes reader-to-device (R2D) messages and device-to-reader (D2R) messages. R2D messages can be transmitted via the physical channel PRDCH, and D2R messages can be transmitted via the physical channel PDRCH.

[0405] The inventory process for A-IoT devices mainly includes inventory trigger message R2D#1 (corresponding to SELECT for RFID), time slot allocation message R2D#2 (corresponding to QUERY for RFID), random number message D2R#1 (corresponding to RN16 for RFID), random number response message R2D#3 (corresponding to ACK for RFID), and tag reporting message D2R#2 (corresponding to EPC for RFID).

[0406] Currently, in order to reuse the hardware of network devices in NR, the CP-OFDM generation method is used when generating the OOK waveform in R2D. For details, please refer to the example in Figure 1j.

[0407] Figure 1j is a schematic diagram of the OOK waveform generation method for R2D provided in this embodiment. As shown in Figure 1j, the OFDM-based waveform in NR includes two parts: the CP part and the OFDM symbol part. The CP is copied from the portion of the OFDM symbol of equal length from its tail. When generating the OOK waveform using the OFDM-based method, it needs to be constrained by the CP generation rules; otherwise, the subcarriers between the A-IoT waveform and the existing NR waveform will not be orthogonal, resulting in interference.

[0408] A-IoT's R2D modulation uses OOK technology and supports dividing a single OFDM symbol into multiple high and low levels to carry multiple bits of information. Accordingly, A-IoT devices receive R2D messages by detecting the high and low levels of OOK and the transition edges between them. In this modulation method, an OFDM symbol does not include the CP (Programmable Component); the CP precedes the OFDM symbol and is not part of it.

[0409] When an OFDM symbol contains few OOK symbols, the CP length is much shorter than the length of an OOK symbol level and can be ignored when an A-IoT device demodulates OOK symbols. However, when an OFDM symbol contains many OOK symbols, the CP length will approach the length of an OOK symbol level. For example, if a 66.7µs OFDM symbol contains 16 OOK symbols, each OOK symbol is approximately 4.2µs long, close to the length of a CP (4.7µs). When an A-IoT device demodulates OOK symbols with a length very close to the CP length, it can easily lead to incorrect demodulation decisions.

[0410] In summary, current A-IoT R2D modulation uses OOK modulation, where the effective information of the R2D message is carried on OFDM symbols, and one OFDM symbol can include multiple OOK symbols. How to address the impact of CP length on demodulation performance in OFDM systems is a pressing technical problem that needs to be solved.

[0411] Based on this, embodiments of this disclosure provide a communication method that reduces the impact of CP length on waveform reception performance by selecting an appropriate waveform generation method. Specifically, the waveform generation method for the R2D message (i.e., the first message) is either an OOK waveform generation method including CP or an OOK waveform generation method without CP. When the waveform generation method for the first message is an OOK waveform generation method including CP, coverage performance can be improved. When the waveform generation method for the first message is an OOK waveform generation method without CP, the impact of CP length on the waveform reception performance of the first message can be reduced, thus solving the problem of erroneous demodulation decisions that easily occur when the CP length is close to the OOK symbol.

[0412] Referring to Figure 2a, Figure 2a is an exemplary interactive schematic diagram of a communication method provided in an embodiment of this disclosure. As shown in Figure 2a, the communication method includes the following steps:

[0413] In step S2101, the first device sends first indication information, which is used to indicate the waveform generation method of the first message; the waveform generation method of the first message is an OOK waveform generation method that includes CP, and the waveform generation method of the first message is associated with the capability of the second type of device.

[0414] In some embodiments, the first device may be a reader, such as a network device, a terminal device, an IAB node, etc.

[0415] In some embodiments, the second type of device may be an Internet of Things (IoT) device, such as an A-IoT device. Communication may occur between the first device and the second type of device.

[0416] A first device sends a first indication message, and a corresponding second type of device receives the first indication message. In some embodiments, the first device can send the first indication message via broadcast. For example, the first indication message is carried in a disk readout trigger message. The first device broadcasts the disk readout trigger message, which is used to trigger the second type of device to participate in disk readout. Correspondingly, the second type of device receives the disk readout trigger message broadcast by the first device and obtains the first indication message from the disk readout trigger message. The first indication message indicates the waveform generation method of the first message, which is a message sent by the first device to the second type of device.

[0417] In some embodiments, the waveform generation method used in the inventory trigger message is a predefined waveform generation method. For example, the value of a first parameter can be predefined, and the waveform generation method used in the inventory trigger message can be predefined based on the value of the first parameter; for example, it can be an OOK waveform generation method that includes CP. The fact that the inventory trigger message uses a predefined waveform generation method enables the second type of device to receive the inventory trigger message according to the predefined waveform generation method, thereby obtaining first indication information and determining the waveform generation method of the first message based on the first indication information.

[0418] In some embodiments, the first indication information includes a value range of a first parameter, which is used to indicate the waveform generation method of the first message. The first parameter is either the number of OOK symbols contained in each OFDM symbol carrying the first message, or the number of OOK symbols contained in each OFDM symbol carrying the first message and the corresponding CP of each OFDM symbol. In other words, the first device indirectly indicates the waveform generation method of the first message by sending the first indication information, which includes the value range of the first parameter.

[0419] In some embodiments, if the first parameter is less than or equal to the first threshold, then the waveform generation method of the first message is an OOK waveform generation method that includes CP, and the first parameter is less than or equal to the first threshold; in some embodiments, if the first parameter is greater than or equal to the first threshold, then the waveform generation method of the first message is an OOK waveform generation method that does not include CP, and the first parameter is greater than or equal to the first threshold.

[0420] In some embodiments, the waveform generation method of the first message is associated with the capability of a second type of device, wherein the second type of device has the capability to process or receive an OOK waveform including CP. First indication information is used to indicate the waveform generation method of the first message, wherein the waveform generation method of the first message is an OOK waveform generation method including CP.

[0421] If the waveform generation method of the first message is an OOK waveform generation method including CP, then the first message is carried on P OFDM symbols and the CP corresponding to P OFDM symbols. The duration of each OFDM symbol and its corresponding CP is the first time unit, and the duration of each OOK symbol contained in each OFDM symbol is the second time unit. The first time unit includes N equal second time units, where N is a positive integer.

[0422] For OOK waveform generation methods that include a CP (Concurrent Component), each OFDM symbol has a corresponding CP. For any OFDM symbol, the sum of the duration of the OFDM symbol and the duration of its corresponding CP constitutes the first time unit. Then, dividing the first time unit into N equal parts yields N equal second time units. In other words, for OOK waveform generation methods that include a CP, the OFDM symbol includes its corresponding CP; dividing the OFDM symbol and its corresponding CP into N equal parts yields N OOK symbols.

[0423] In step S2102, the second type of device sends a second message in response to the first message to the first device. The second type of device has the ability to process or receive an OOK waveform containing CP.

[0424] The second type of device has the capability to process or receive OOK waveforms containing CP. It can receive the first message according to the waveform generation method of the first message, and process the first message according to the waveform generation method to parse its content. After receiving the first message, the second type of device can send a second message to the first device; the second message is a response to the first message. Correspondingly, the first device receives the second message sent by the second type of device.

[0425] In some embodiments, for a second type of device capable of processing or receiving an OOK waveform containing CP, if the first indication information indicates that the waveform generation method of the first message is an OOK waveform generation method containing CP, the second type of device can normally receive the first message and participate in this round of inventory. The second type of device sends a second message to the first device in response to the first message.

[0426] The communication method involved in the embodiments of this disclosure may include at least one of steps S2101 to S2102. For example, step S2101 may be implemented as a standalone embodiment, but is not limited thereto.

[0427] In some embodiments, step S2102 is optional, and one or more of these steps may be omitted or substituted in different embodiments.

[0428] In some embodiments, the steps and their optional implementations in other embodiments described before or after this embodiment, as well as other related parts in the specification, can be referred to, and will not be repeated here.

[0429] Referring to Figure 2b, which is an exemplary interactive schematic diagram of the communication method provided in this embodiment of the present disclosure. As shown in Figure 2b, the communication method includes the following steps:

[0430] In step S2201, the first device sends first indication information, which is used to indicate the waveform generation method of the first message; the waveform generation method of the first message is an OOK waveform generation method that does not include CP, and the waveform generation method of the first message is associated with the capability of the second type of device.

[0431] In some embodiments, the first device may be a reader, such as a network device, a terminal device, an IAB node, etc.

[0432] In some embodiments, the second type of device may be an Internet of Things (IoT) device, such as an A-IoT device. Communication may occur between the first device and the second type of device.

[0433] A first device sends a first indication message, and a corresponding second type of device receives the first indication message. In some embodiments, the first device can send the first indication message via broadcast. For example, the first indication message is carried in a disk readout trigger message. The first device broadcasts the disk readout trigger message, which is used to trigger the second type of device to participate in disk readout. Correspondingly, the second type of device receives the disk readout trigger message broadcast by the first device and obtains the first indication message from the disk readout trigger message. The first indication message indicates the waveform generation method of the first message, which is a message sent by the first device to the second type of device.

[0434] In some embodiments, the waveform generation method of the first message is associated with the capability of a second type of device, wherein the second type of device has the capability to process or receive an OOK waveform that does not contain a CP. First indication information is used to indicate the waveform generation method of the first message, wherein the waveform generation method of the first message is an OOK waveform generation method that does not contain a CP.

[0435] If the waveform generation method of the first message is the OOK waveform generation method without CP, then the first message is carried on Q OFDM symbols. The duration of each OFDM symbol is the first time unit, and the duration of each OOK symbol contained in each OFDM symbol is the second time unit. The first time unit includes M equal second time units, where M is a positive integer.

[0436] For OOK waveform generation methods that do not include CP, each OFDM symbol does not include CP. For any OFDM symbol, the duration of the OFDM symbol is the first time unit. Then, the first time unit is divided into M equal parts to obtain M equal second time units. In other words, for OOK waveform generation methods that do not include CP, the OFDM symbol does not include CP, and dividing the OFDM symbol into M equal parts yields M OOK symbols.

[0437] In step S2202, the second type of device sends a second message in response to the first message to the first device. The second type of device does not have the ability to process or receive OOK waveforms containing CP.

[0438] The second type of device has the capability to process or receive OOK waveforms that do not contain CP. It can receive the first message according to the waveform generation method of the first message, and process the first message according to the waveform generation method to parse the content of the first message. After receiving the first message, the second device can send a second message to the first device; the second message is a response to the first message. Correspondingly, the first device receives the second message sent by the second type of device.

[0439] In some embodiments, for a second type of device capable of processing or receiving an OOK waveform containing CP, if the first indication information indicates that the waveform generation method of the first message is an OOK waveform generation method containing CP, the second type of device can normally receive the first message and participate in this round of inventory. The second type of device sends a second message to the first device in response to the first message.

[0440] The communication method involved in the embodiments of this disclosure may include at least one of steps S2201 to S2202. For example, step S2201 may be implemented as a standalone embodiment, but is not limited thereto.

[0441] In some embodiments, step S2202 is optional, and one or more of these steps may be omitted or substituted in different embodiments.

[0442] In some embodiments, the steps and their optional implementations in other embodiments described before or after this embodiment, as well as other related parts in the specification, can be referred to, and will not be repeated here.

[0443] Referring to Figure 2c, which is an exemplary interactive schematic diagram of the communication method provided in this embodiment of the present disclosure, the communication method includes the following steps:

[0444] Step S2301: The first device sends first indication information, which is used to indicate the waveform generation method of the first message; wherein, the first message is a message sent by the first device to the second type of device; the waveform generation method of the first message is an OOK waveform generation method including CP, and the waveform generation method of the first message is associated with the value range of the first parameter.

[0445] In some embodiments, the first device may be a reader, such as a network device, a terminal device, an IAB node, etc.

[0446] In some embodiments, the second type of device may be an Internet of Things (IoT) device, such as an A-IoT device. Communication may occur between the first device and the second type of device.

[0447] A first device sends a first indication message, and a corresponding second type of device receives the first indication message. In some embodiments, the first device may send the first indication message by broadcasting, for example, the first indication message may be carried in a disk readout trigger message. The first device broadcasts the disk readout trigger message, which is used to trigger the second type of device to participate in disk readout. Correspondingly, the second type of device receives the disk readout trigger message broadcast by the first device and obtains the first indication message from the disk readout trigger message.

[0448] In some embodiments, the waveform generation method of the first message is associated with the value range of the first parameter, wherein the first parameter is the number of OOK symbols contained in each OFDM symbol carrying the first message, or the first parameter is the number of OOK symbols contained in each OFDM symbol carrying the first message and the CP corresponding to each OFDM symbol.

[0449] In some embodiments, the waveform generation method of the first message is associated with the value range of the first parameter.

[0450] In some embodiments, the waveform of the first message is generated in an OOK waveform generation method that includes CP, and the first parameter is less than or equal to a first threshold.

[0451] In some embodiments, the waveform of the first message is generated in an OOK waveform generation method that does not include CP, and the first parameter is greater than or equal to the first threshold.

[0452] In some embodiments, the value of the first parameter belongs to a first set, which includes at least one of the following: 1, 2, 4, 6, 8, 12, 16, 24, 32.

[0453] In some embodiments, the first threshold value is one of the following: 6, 8, 12, 16.

[0454] In some embodiments, if the waveform generation method of the first message is an OOK waveform generation method including CP, then the first parameter is each OFDM symbol carrying the first message and the number of OOK symbols included in the CP corresponding to each OFDM symbol. Taking a first threshold value of 12 as an example, if the first set includes at least one of the following: 1, 2, 4, 6, 8, 12, 16, 24, 32, then when the waveform generation method of the first message is an OOK waveform generation method including CP, the value of the first parameter can be, for example, one of the following: 1, 2, 4, 6, 8, 12.

[0455] If the waveform generation method of the first message is an OOK waveform generation method including CP, then the first message is carried on P OFDM symbols and the CP corresponding to P OFDM symbols. The duration of each OFDM symbol and its corresponding CP is the first time unit, and the duration of each OOK symbol contained in each OFDM symbol is the second time unit. The first time unit includes N equal second time units, where N is a positive integer.

[0456] For OOK waveform generation methods that include a CP (Concurrent Component), each OFDM symbol has a corresponding CP. For any OFDM symbol, the sum of the duration of the OFDM symbol and the duration of its corresponding CP constitutes the first time unit. Dividing this first time unit into N equal parts yields N equal second time units. In other words, for OOK waveform generation methods that include a CP, an OFDM symbol includes its corresponding CP; dividing the OFDM symbol and its corresponding CP into N equal parts results in N OOK symbols. In this case, the number of OOK symbols contained in each OFDM symbol and its corresponding CP is N, so the first parameter is N.

[0457] In some embodiments, if the waveform generation method of the first message is an OOK waveform generation method without CP, then the first parameter is the number of OOK symbols contained in each OFDM symbol carrying the first message. Taking a first threshold value of 12 as an example, if the first set includes at least one of the following: 1, 2, 4, 6, 8, 12, 16, 24, 32, then when the waveform generation method of the first message is an OOK waveform generation method without CP, the value of the first parameter can be, for example, one of the following: 12, 16, 24, 32.

[0458] If the waveform generation method of the first message is the OOK waveform generation method without CP, then the first message is carried on Q OFDM symbols. The duration of each OFDM symbol is the first time unit, and the duration of each OOK symbol contained in each OFDM symbol is the second time unit. The first time unit includes M equal second time units, where M is a positive integer.

[0459] For OOK waveform generation methods that do not include CP, each OFDM symbol does not include CP. For any given OFDM symbol, its duration is the first time unit. This first time unit is then divided into M equal parts, resulting in M ​​equal second time units. In other words, for OOK waveform generation methods that do not include CP, the OFDM symbol does not contain CP, and dividing the OFDM symbol into M equal parts yields M OOK symbols. In this case, each OFDM symbol contains M OOK symbols, so the first parameter is M.

[0460] In some embodiments, the steps and their optional implementations in other embodiments described before or after this embodiment, as well as other related parts in the specification, can be referred to, and will not be repeated here.

[0461] The first indication information is used to indicate the waveform generation method of the first message. The waveform generation method of the first message is associated with the capability of the second type of device, and / or the waveform generation method of the first message is associated with the value range of the first parameter. Then the first device can use the first message to separately inventory the second type of devices with different capabilities. The following is a specific example.

[0462] Figure 2d is a schematic diagram of an inventory process provided in an embodiment of this disclosure. As shown in Figure 2d, a time-sharing inventory scheme is illustrated, wherein the time-sharing inventory can be time-sharing inventory on a large time scale or time-sharing inventory on a small time scale. In the example of Figure 2d, the first device is a network device and the second type of device is an A-IoT device, which will be described as an example.

[0463] As shown in Figure 2d, the network device sends a disk readout trigger message to the A-IoT device. This disk readout trigger message includes first indication information, which indicates the waveform generation method of the first message. The disk readout trigger message is divided into two categories: one is a signaling message with a label selection function carrying mask information, as shown in R2D#1 in Figure 2d; the other is a signaling message with a label query function carrying access time slot parameters, as shown in R2D#2 and R2D#4 in Figure 2d.

[0464] For time-division inventory management on a large time scale, taking the inventory trigger message R2D#1 in Figure 2d as an example, R2D#1 includes first indication information. The first indication information indicates the waveform generation method of the first message. The waveform generation method of the first message is associated with the capabilities of the second type of device. When the inventory round indicates that only A-IoT devices capable of processing or receiving OOK waveforms without CP are allowed to participate in the inventory, the A-IoT devices accessed during the first inventory period and the second inventory period are all A-IoT devices capable of processing or receiving OOK waveforms without CP. When the inventory trigger message R2D#1 indicates that only A-IoT devices capable of processing or receiving OOK waveforms with CP are allowed to participate in the inventory, the A-IoT devices accessed during the first inventory period and the second inventory period are all A-IoT devices capable of processing or receiving OOK waveforms with CP.

[0465] For time-division disk storage on a small time scale, taking disk storage trigger messages R2D#2 and R2D#4 in Figure 2d as examples, within the first disk storage duration corresponding to R2D#2, only one type of A-IoT device is allowed to access: an A-IoT device capable of processing or receiving OOK waveforms containing CP, or an A-IoT device capable of processing or receiving OOK waveforms without CP; within the second disk storage duration corresponding to R2D#4, only one type of A-IoT device is allowed to access: an A-IoT device capable of processing or receiving OOK waveforms containing CP, or an A-IoT device capable of processing or receiving OOK waveforms without CP.

[0466] In some embodiments, the range of random numbers generated by the A-IoT device can be predefined and related to the capabilities of the A-IoT device. For example, when the A-IoT device has the capability to process or receive OOK waveforms that do not contain CP, the range of random numbers generated by the A-IoT device is 0 to 2. Q-1 -1; When an A-IoT device has the ability to process or receive an OOK waveform containing CP, the range of random numbers generated by the A-IoT device is 2. Q-1 ~2 Q -1. Through the above implementation method, the access timing of A-IoT devices capable of processing or receiving OOK waveforms without CP can be divided into the first half of the whole round of inventory, and the access timing of A-IoT devices capable of processing or receiving OOK waveforms containing CP can be divided into the second half of the whole round of inventory.

[0467] For example, when an A-IoT device has the ability to process or receive OOK waveforms that do not contain CP, the range of random numbers generated by the A-IoT device is 0 to 2. Q -1 is a number whose modulo 2 is 0; when an A-IoT device has the ability to process or receive OOK waveforms containing CP, the range of random numbers generated by the A-IoT device is 0 to 2. Q -1 is a number whose modulo 2 is 1. Through the above implementation, the access opportunities of two A-IoT devices with different capabilities can be evenly and alternately distributed throughout the entire inventory.

[0468] The above methods enable access control of second-type devices with different capabilities, and can also improve R2D coverage in high-speed transmission scenarios.

[0469] In summary, in some embodiments, the first indication information is used to indicate the waveform generation method of the first message, which is either an OOK waveform generation method that includes CP or an OOK waveform generation method that does not include CP.

[0470] In some embodiments, the waveform generation method of the first message is associated with the capability of a second type of device, which has the capability to process or receive an OOK waveform containing a CP, or the second type of device has the capability to process or receive an OOK waveform without a CP.

[0471] In some embodiments, the second type of device receives first indication information, which indicates that the waveform generation method of the first message is an OOK waveform generation method including CP. If the second type of device has the capability to process or receive an OOK waveform including CP, then the second type of device participates in this inventory and receives the first message according to the waveform generation method including CP; if the second type of device has the capability to process or receive an OOK waveform without CP, then the second type of device does not participate in this inventory.

[0472] In some embodiments, the second type of device receives first indication information, which indicates that the waveform generation method of the first message is an OOK waveform generation method without CP. If the second type of device has the capability to process or receive an OOK waveform without CP, then the second type of device participates in this inventory and receives the first message according to the waveform generation method without CP; if the second type of device has the capability to process or receive an OOK waveform with CP, then the second type of device does not participate in this inventory.

[0473] In some embodiments, the waveform generation method of the first message is associated with the value range of the first parameter. If the waveform generation method of the first message is an OOK waveform generation method including CP, and the first parameter is less than or equal to the first threshold, the second type of device can receive the first message according to the OOK waveform generation method including CP, or it can receive the first message according to the OOK waveform generation method without CP; if the waveform generation method of the first message is an OOK waveform generation method without CP, and the first parameter is greater than or equal to the first threshold, the second type of device receives the first message according to the OOK waveform generation method without CP.

[0474] In summary, the solution of this embodiment of the present disclosure allows the first device to indicate a suitable waveform generation method through the first indication information and process the first message through the suitable waveform generation method, thereby reducing the impact of CP length on the waveform reception performance of the first message.

[0475] In some embodiments, the waveform generation method of the first message is associated with the capabilities of the second type of device, such that a second type of device capable of receiving or processing OOK waveforms containing CP receives waveforms generated by the OOK waveform generation method containing CP; and a second type of device capable of receiving or processing OOK waveforms without CP receives waveforms generated by the OOK waveform generation method without CP. This method supports the storage of second type of devices with different capabilities.

[0476] In some embodiments, for the OOK waveform generation method including CP (i.e., OFDM symbols including CP), the length of an OFDM symbol can be expressed as x+y, where x is the length of the effective information carried in the OFDM symbol, and y is the length of the CP in the OFDM symbol. Therefore, the length of the OOK symbol in the OFDM symbol is (x+y) / N, where N is the number of OOK symbols included in the OFDM symbol. For the OOK waveform generation method without CP, the length of an OFDM symbol can be expressed as x, where x is the length of the effective information carried in the OFDM symbol. Therefore, the length of the OOK symbol in the OFDM symbol is x / N. It is evident that the level length of the OOK symbol in the OFDM symbol obtained using the waveform generation method including CP is longer than that obtained using the waveform generation method without CP, resulting in a higher energy output for the generated waveform. This improves coverage performance, lowers the demodulation threshold, and enhances the demodulation and reception performance of the OOK waveform.

[0477] In some embodiments, if the first parameter is greater than or equal to the first threshold, the waveform generation method of the first message is an OOK waveform generation method that does not include CP. Since OFDM symbols do not contain CP, the problem of incorrect demodulation decisions caused by the CP length being close to that of OOK symbols can be solved. In summary, the solution of the embodiments of this disclosure can reduce the impact of CP length on the performance of R2D waveform reception and improve the demodulation performance of R2D waveforms.

[0478] Referring to Figure 3, Figure 3 is an exemplary interactive schematic diagram of a communication method provided in this embodiment of the present disclosure. As shown in Figure 3, the communication method includes the following steps:

[0479] Step S3101: The first device sends first indication information, which is used to indicate the waveform generation method of the first message; wherein, the first message is a message sent by the first device to the second type of device; the waveform generation method of the first message is an OOK waveform generation method that includes CP or an OOK waveform generation method that does not include CP.

[0480] In some embodiments, the first device may be a reader / writer, such as a network device, a terminal device, an IAB node, etc. In some embodiments, the second type of device may be an Internet of Things (IoT) device, such as an A-IoT device. The first device and the second type of device can communicate with each other.

[0481] In some embodiments, the first indication information may be carried in a disk readout trigger message. The first device broadcasts the disk readout trigger message, which is used to trigger a second type of device to participate in disk readout. Correspondingly, the second type of device receives the disk readout trigger message broadcast by the first device and obtains the first indication information from the disk readout trigger message. The first indication information is used to indicate the waveform generation method of the first message, which is a message sent by the first device to the second type of device.

[0482] In some embodiments, the waveform of the first message is generated as an OOK waveform generation method that includes CP. For an introduction to the OOK waveform generation method that includes CP, please refer to the optional implementation of step S2101 in Figure 2a, and other related parts in the embodiments involved in Figure 2a, which will not be repeated here.

[0483] In some embodiments, the waveform of the first message is generated as an OOK waveform without CP. For an introduction to the OOK waveform generation method without CP, please refer to the optional implementation of step S2201 in Figure 2b, and other related parts in the embodiments involved in Figure 2b, which will not be repeated here.

[0484] In some embodiments, the steps and their optional implementations in other embodiments described before or after this embodiment, as well as other related parts in the specification, can be referred to, and will not be repeated here.

[0485] Referring to Figure 4a, which is an exemplary interactive schematic diagram of a communication method provided in this embodiment of the present disclosure. As shown in Figure 4a, the communication method includes the following steps:

[0486] In step S4101, the first device sends first indication information, which is used to indicate the value range of the first parameter. The first parameter is the number of OOK symbols contained in each OFDM symbol carrying the first message, or the first parameter is the number of OOK symbols contained in each OFDM symbol carrying the first message and the CP corresponding to each OFDM symbol. The first message is a message sent by the first device to the second type of device, and the value range of the first parameter is related to the capability of the second type of device.

[0487] In some embodiments, the first device may be a reader / writer, such as a network device, a terminal device, an IAB node, etc. In some embodiments, the second type of device may be an Internet of Things (IoT) device, such as an A-IoT device. The first device and the second type of device can communicate with each other.

[0488] A first device sends a first indication message, and a corresponding second type of device receives the first indication message. In some embodiments, the first device can send the first indication message via broadcast. For example, the first indication message is carried in a disk readout trigger message. The first device broadcasts the disk readout trigger message, which is used to trigger the second type of device to participate in disk readout. Correspondingly, the second type of device receives the disk readout trigger message broadcast by the first device and obtains the first indication message from the disk readout trigger message. The first indication message indicates the value range of a first parameter, and the first message is a message sent by the first device to the second type of device.

[0489] In some embodiments, the value range of the first parameter is associated with the capability of a second type of device, wherein the second type of device has the capability to process or receive an OOK waveform containing a CP. First indication information is used to indicate the value range of the first parameter, wherein the first parameter is less than or equal to a first threshold.

[0490] If the first parameter is less than or equal to the first threshold, the waveform generation method of the first message is a waveform generation method including CP. The first message is carried on P OFDM symbols and the CPs corresponding to the P OFDM symbols. The duration of each OFDM symbol and its corresponding CP is the first time unit, and the duration of each OOK symbol contained in each OFDM symbol is the second time unit. The first time unit includes N equal second time units, where N is a positive integer.

[0491] For OOK waveform generation methods that include a CP (Concurrent Component), each OFDM symbol has a corresponding CP. For any OFDM symbol, the sum of the duration of the OFDM symbol and the duration of its corresponding CP constitutes the first time unit. Then, dividing the first time unit into N equal parts yields N equal second time units. In other words, for OOK waveform generation methods that include a CP, the OFDM symbol includes its corresponding CP; dividing the OFDM symbol and its corresponding CP into N equal parts yields N OOK symbols.

[0492] In step S4102, the second type of device sends a second message in response to the first message to the first device. The second type of device has the ability to process or receive an OOK waveform containing CP.

[0493] The second type of device has the capability to process or receive OOK waveforms containing CP (Content Component). It can receive a first message according to the generation method of the OOK waveform containing CP, and process the first message according to its waveform generation method to parse its content. After receiving the first message, the second type of device can send a second message to the first device, which is a response to the first message. Correspondingly, the first device receives the second message sent by the second type of device.

[0494] In some embodiments, for a second type of device capable of processing or receiving an OOK waveform containing CP, if the first indication information indicates that the waveform generation method of the first message is an OOK waveform generation method containing CP, the second type of device can normally receive the first message and participate in this round of inventory. The second type of device sends a second message to the first device in response to the first message.

[0495] The communication method involved in the embodiments of this disclosure may include at least one of steps S4101 to S4102. For example, step S4101 may be implemented as a standalone embodiment, but is not limited thereto.

[0496] In some embodiments, step S4102 is optional, and one or more of these steps may be omitted or substituted in different embodiments.

[0497] In some embodiments, the steps and their optional implementations in other embodiments described before or after this embodiment, as well as other related parts in the specification, can be referred to, and will not be repeated here.

[0498] Referring to Figure 4b, which is an exemplary interactive schematic diagram of the communication method provided in this embodiment of the present disclosure, the communication method includes the following steps:

[0499] In step S4201, the first device sends first indication information, which is used to indicate the value range of the first parameter. The first parameter is the number of OOK symbols contained in each OFDM symbol carrying the first message, or the first parameter is the number of OOK symbols contained in each OFDM symbol carrying the first message and the CP corresponding to each OFDM symbol. The first message is a message sent by the first device to the second type of device, and the value range of the first parameter is related to the capability of the second type of device.

[0500] In some embodiments, the first device may be a reader / writer, such as a network device, a terminal device, an IAB node, etc. In some embodiments, the second type of device may be an Internet of Things (IoT) device, such as an A-IoT device. The first device and the second type of device can communicate with each other.

[0501] A first device sends a first indication message, and a corresponding second type of device receives the first indication message. In some embodiments, the first device can send the first indication message via broadcast. For example, the first indication message is carried in a disk readout trigger message. The first device broadcasts the disk readout trigger message, which is used to trigger the second type of device to participate in disk readout. Correspondingly, the second type of device receives the disk readout trigger message broadcast by the first device and obtains the first indication message from the disk readout trigger message. The first indication message indicates the value range of a first parameter, and the first message is a message sent by the first device to the second type of device.

[0502] In some embodiments, the value range of the first parameter is associated with the capability of a second type of device, wherein the second type of device has the capability to process or receive OOK waveforms that do not contain CP. First indication information is used to indicate the value range of the first parameter, wherein the first parameter is greater than or equal to a first threshold.

[0503] If the first parameter is greater than or equal to the first threshold, the waveform generation method of the first message is a waveform generation method that does not include CP. The first message is carried on Q OFDM symbols. The duration of each OFDM symbol is the first time unit, and the duration of each OOK symbol contained in each OFDM symbol is the second time unit. The first time unit includes M equal second time units, where M is a positive integer.

[0504] For OOK waveform generation methods that do not include CP, each OFDM symbol does not include CP. For any OFDM symbol, the duration of the OFDM symbol is the first time unit. Then, the first time unit is divided into M equal parts to obtain M equal second time units. In other words, for OOK waveform generation methods that do not include CP, the OFDM symbol does not include CP, and dividing the OFDM symbol into M equal parts yields M OOK symbols.

[0505] In step S4202, the second type of device sends a second message in response to the first message to the first device. The second type of device has the ability to process or receive OOK waveforms that do not contain CP.

[0506] The second type of device has the capability to process or receive OOK waveforms that do not contain CP. It can receive the first message according to the generation method of the OOK waveform without CP, and process the first message according to its waveform generation method to parse its content. After receiving the first message, the second type of device can send a second message to the first device, which is a response to the first message. Correspondingly, the first device receives the second message sent by the second type of device.

[0507] In some embodiments, for a second type of device capable of processing or receiving an OOK waveform containing CP, if the first indication information indicates that the waveform generation method of the first message is an OOK waveform generation method containing CP, the second type of device can normally receive the first message and participate in this round of inventory. The second type of device sends a second message to the first device in response to the first message.

[0508] The communication method involved in the embodiments of this disclosure may include at least one of steps S4201 to S4202. For example, step S4201 may be implemented as a standalone embodiment, but is not limited thereto.

[0509] In some embodiments, step S4202 is optional, and one or more of these steps may be omitted or substituted in different embodiments.

[0510] In some embodiments, the steps and their optional implementations in other embodiments described before or after this embodiment, as well as other related parts in the specification, can be referred to, and will not be repeated here.

[0511] Referring to Figure 4c, which is an exemplary interactive schematic diagram of the communication method provided in this embodiment of the present disclosure. As shown in Figure 4c, the communication method includes the following steps:

[0512] In step S4301, the first device sends first indication information, which is used to indicate the value range of the first parameter. The first parameter is the number of OOK symbols contained in each OFDM symbol carrying the first message, or the first parameter is the number of OOK symbols contained in each OFDM symbol carrying the first message and the CP corresponding to each OFDM symbol. The first message is a message sent by the first device to the second type of device, and the value range of the first parameter is related to the waveform generation method of the first message.

[0513] In some embodiments, the first device may be a reader, such as a network device, a terminal device, an IAB node, etc.

[0514] In some embodiments, the second type of device may be an Internet of Things (IoT) device, such as an A-IoT device. Communication may occur between the first device and the second type of device.

[0515] A first device sends a first indication message, and a corresponding second type of device receives the first indication message. In some embodiments, the first device may send the first indication message by broadcasting, for example, the first indication message may be carried in a disk readout trigger message. The first device broadcasts the disk readout trigger message, which is used to trigger the second type of device to participate in disk readout. Correspondingly, the second type of device receives the disk readout trigger message broadcast by the first device and obtains the first indication message from the disk readout trigger message.

[0516] In some embodiments, the first indication information includes a value range of a first parameter. The first device indicates the waveform generation method of the first message through the value range of the first parameter. The first parameter is either the number of OOK symbols contained in each OFDM symbol carrying the first message, or the number of OOK symbols contained in each OFDM symbol carrying the first message and the corresponding CP of each OFDM symbol. After receiving the first indication information, the second type of device can obtain the value range of the first parameter and thus determine the waveform generation method of the first message based on the value range of the first parameter. In other words, by sending the first indication information, the first device can indirectly indicate the waveform generation method of the first message through the value range of the first parameter in the first indication information.

[0517] In some embodiments, if the first parameter is less than or equal to the first threshold, then the waveform generation method of the first message is an OOK waveform generation method including CP, and the first parameter is less than or equal to the first threshold.

[0518] In some embodiments, if the first parameter is greater than or equal to the first threshold, then the waveform generation method of the first message is the OOK waveform generation method without CP, and the first parameter is greater than or equal to the first threshold.

[0519] In some embodiments, the value range of the first parameter is associated with the waveform generation method of the first message, and the waveform generation method of the first message includes: an OOK waveform generation method that includes CP, or an OOK waveform generation method that does not include CP.

[0520] In some embodiments, the first parameter is less than or equal to the first threshold, and the waveform of the first message is generated in an OOK waveform generation method that includes CP.

[0521] In some embodiments, the first parameter is greater than or equal to the first threshold, and the waveform of the first message is generated in an OOK waveform generation method that does not include CP. In some embodiments, the value of the first parameter belongs to a first set, and the first set includes at least one of the following: 1, 2, 4, 6, 8, 12, 16, 24, 32.

[0522] In some embodiments, the first threshold value is one of the following: 6, 8, 12, 16.

[0523] In some embodiments, if the first parameter is less than or equal to the first threshold, the waveform generation method of the first message is an OOK waveform generation method including CP. The first parameter is each OFDM symbol carrying the first message and the number of OOK symbols included in the CP corresponding to each OFDM symbol. Taking a first threshold value of 12 as an example, if the first set includes at least one of the following: 1, 2, 4, 6, 8, 12, 16, 24, 32, then when the first parameter is a value of one of the following, the waveform generation method of the first message is an OOK waveform generation method including CP: 1, 2, 4, 6, 8, 12.

[0524] If the waveform generation method of the first message is an OOK waveform generation method including CP, then the first message is carried on P OFDM symbols and the CP corresponding to P OFDM symbols. The duration of each OFDM symbol and its corresponding CP is the first time unit, and the duration of each OOK symbol contained in each OFDM symbol is the second time unit. The first time unit includes N equal second time units, where N is a positive integer.

[0525] In some embodiments, if the first parameter is greater than or equal to the first threshold, then the waveform generation method of the first message is an OOK waveform generation method without CP, and the first parameter is the number of OOK symbols contained in each OFDM symbol carrying the first message. Taking a first threshold value of 12 as an example, if the first set includes at least one of the following: 1, 2, 4, 6, 8, 12, 16, 24, 32, then when the waveform generation method of the first message is an OOK waveform generation method without CP, the value of the first parameter can be, for example, one of the following: 12, 16, 24, 32.

[0526] If the waveform generation method of the first message is the OOK waveform generation method without CP, then the first message is carried on Q OFDM symbols. The duration of each OFDM symbol is the first time unit, and the duration of each OOK symbol contained in each OFDM symbol is the second time unit. The first time unit includes M equal second time units, where M is a positive integer.

[0527] In some embodiments, the steps and their optional implementations in other embodiments described before or after this embodiment, as well as other related parts in the specification, can be referred to, and will not be repeated here.

[0528] Figure 4d is a schematic diagram of an R2D frame structure of the communication method provided in this embodiment. As shown in Figure 4d, the first indication information can be carried in the disk trigger message, which is an R2D type message and includes a synchronization header and a PRDCH.

[0529] In one possible implementation, the first indication information is carried in the inventory trigger message to indicate the value range of the first parameter. For example, the inventory trigger message contains 1 bit of first indication information to indicate that the first parameter is greater than or equal to a first threshold, or to indicate that the first parameter is less than or equal to a first threshold. The first threshold can be a protocol preset value, thereby saving the indication overhead of the network device; the first threshold can also be a threshold configured by the network device, which can improve the indication flexibility of the first threshold.

[0530] In one possible implementation, the range of values ​​for the first parameter can be dynamically indicated via a synchronization header. As shown in Figure 4d, an R2D message includes at least a synchronization header and a data PRDCH portion. The synchronization header is a timing reference signal composed of a predefined series of high and low levels, and whether the synchronization header includes a CP is also predefined by the protocol. Before the second type of device processes the PRDCH, the range of values ​​for the first parameter can be obtained by detecting different modes of the synchronization header, thereby determining the waveform generation method for the first message based on the range of values ​​for the first parameter. This method allows for more flexible indication of the range of values ​​for the first parameter and also helps network devices adjust the transmission rate. At higher data rates, network devices can generate the waveform of the first message using a waveform generation method that does not include a CP, thereby improving the demodulation performance of the first message and enhancing R2D coverage.

[0531] In summary, in some embodiments, the first indication information is used to indicate the range of values ​​for the first parameter.

[0532] In some embodiments, the range of values ​​for the first parameter is associated with the capability of the second type of device, which has the capability to process or receive OOK waveforms containing CP, or the second type of device has the capability to process or receive OOK waveforms without CP.

[0533] In some embodiments, the second type of device receives first indication information, which indicates that the value range of the first parameter is less than or equal to a first threshold. If the second type of device has the capability to process or receive an OOK waveform containing CP, then the second type of device participates in this inventory. The second type of device receives the first message according to the waveform generation method containing CP or according to the waveform generation method without CP. If the second type of device has the capability to process or receive an OOK waveform without CP, then the second type of device does not participate in this inventory.

[0534] In some embodiments, the second type of device receives first indication information, which indicates that the value range of the first parameter is greater than or equal to a first threshold. If the second type of device has the capability to process or receive OOK waveforms that do not contain CP, then the second type of device participates in this inventory, and the second type of device receives the first message according to the waveform generation method that does not contain CP; if the second type of device has the capability to process or receive OOK waveforms that contain CP, then the second type of device does not participate in this inventory.

[0535] In some embodiments, the value range of the first parameter is associated with the waveform generation method of the first message. If the first parameter is less than or equal to the first threshold, the waveform generation method of the first message is an OOK waveform generation method including CP, and the second type of device can receive the first message according to the OOK waveform generation method including CP or the OOK waveform generation method without CP; if the first parameter is greater than or equal to the first threshold, the waveform generation method of the first message is an OOK waveform generation method without CP, and the second type of device receives the first message according to the OOK waveform generation method without CP.

[0536] Referring to Figure 5, Figure 5 is an exemplary interactive schematic diagram of a communication method provided in this embodiment of the present disclosure. As shown in Figure 5, the communication method includes the following steps:

[0537] Step S5101: The first device sends first indication information, which is used to indicate the value range of the first parameter; wherein, the first parameter is the number of OOK symbols contained in each OFDM symbol carrying the first message, or, the first parameter is the number of OOK symbols contained in each OFDM symbol carrying the first message and the CP corresponding to each OFDM symbol; the first message is a message sent by the first device to the second type of device.

[0538] In some embodiments, the first device may be a reader / writer, such as a network device, a terminal device, an IAB node, etc. In some embodiments, the second type of device may be an Internet of Things (IoT) device, such as an A-IoT device. The first device and the second type of device can communicate with each other.

[0539] In some embodiments, the first indication information may be carried in a disk readout trigger message. The first device broadcasts the disk readout trigger message, which is used to trigger a second type of device to participate in disk readout. Correspondingly, the second type of device receives the disk readout trigger message broadcast by the first device and obtains the first indication information from the disk readout trigger message. The first indication information is used to indicate the value range of the first parameter, and the first message is a message sent by the first device to the second type of device.

[0540] In some embodiments, the range of values ​​for the first parameter is associated with the capabilities of the second type of device.

[0541] In some embodiments, the range of values ​​for the first parameter is associated with the waveform generation method of the first message.

[0542] In some embodiments, the steps and their optional implementations in other embodiments described before or after this embodiment, as well as other related parts in the specification, can be referred to, and will not be repeated here.

[0543] This disclosure also proposes an apparatus (also referred to as a communication device, etc.) for implementing any of the above methods. For example, an apparatus is proposed, which includes units or modules for implementing the steps performed by the terminal device in any of the above methods.

[0544] It should be understood that the division of units or modules in the above device is only a logical functional division. In actual implementation, they can be fully or partially integrated into a single physical entity, or they can be physically separated. Furthermore, the units or modules in the device can be implemented by a processor calling software: for example, the device includes a processor connected to a memory containing instructions. The processor calls the instructions stored in the memory to implement any of the above methods or to implement the functions of the units or modules in the above device. The processor can be, for example, a general-purpose processor, such as a Central Processing Unit (CPU) or a microprocessor, and the memory can be internal or external to the device. Alternatively, the units or modules in the device can be implemented in the form of hardware circuits. The functionality of some or all of the units or modules can be achieved through the design of these hardware circuits, which can be understood as one or more processors. For example, in one implementation, the hardware circuit is an application-specific integrated circuit (ASIC). The functionality of some or all of the units or modules is achieved through the design of the logical relationships between the components within the circuit. In another implementation, the hardware circuit can be implemented using a programmable logic device (PLD). Taking a field-programmable gate array (FPGA) as an example, it can include a large number of logic gates. The connection relationships between the logic gates are configured through configuration files, thereby achieving the functionality of some or all of the units or modules. All units or modules of the above device can be implemented entirely through processor-called software, entirely through hardware circuits, or partially through processor-called software with the remaining parts implemented through hardware circuits.

[0545] In this embodiment, the processor is a circuit with signal processing capabilities. In one implementation, the processor can be a circuit with instruction read and execute capabilities, such as a Central Processing Unit (CPU), a microprocessor, a graphics processing unit (GPU) (which can be understood as a microprocessor), or a digital signal processor (DSP). In another implementation, the processor can implement certain functions through the logical relationships of hardware circuits. The logical relationships of the aforementioned hardware circuits are fixed or reconfigurable. For example, the processor is a hardware circuit implemented using an application-specific integrated circuit (ASIC) or a programmable logic device (PLD), such as an FPGA. In a reconfigurable hardware circuit, the process of the processor loading a configuration document and configuring the hardware circuit can be understood as the process of the processor loading instructions to implement the functions of some or all of the above units or modules. Furthermore, it can also be a hardware circuit designed for artificial intelligence, which can be understood as an ASIC, such as a Neural Network Processing Unit (NPU), a Tensor Processing Unit (TPU), or a Deep Learning Processing Unit (DPU).

[0546] Figure 6a is an exemplary structural schematic diagram of the first device according to an embodiment of this disclosure. The first device 6100 is used to perform any of the above methods. In some embodiments, as shown in Figure 6a, the first device 6100 may include a transceiver module 6101, wherein:

[0547] The transceiver module 6101 is used to send first indication information, which is used to indicate the waveform generation method of the first message;

[0548] The first message is a message sent from the first device to the second type of device; the waveform of the first message is generated by either the on / off key control OOK waveform generation method containing the cyclic prefix CP or the OOK waveform generation method without CP.

[0549] In some embodiments, the waveform generation method of the first message is associated with at least one of the following:

[0550] The capabilities of the second type of device include: the ability of the second type of device to process or receive OOK waveforms containing CP, or the ability of the second type of device to process or receive OOK waveforms not containing CP;

[0551] The first parameter can be set to a range of values. The first parameter is the number of OOK symbols contained in each OFDM symbol carrying the first message, or the first parameter is the number of OOK symbols contained in each OFDM symbol carrying the first message and the corresponding CP of each OFDM symbol.

[0552] In some embodiments, the waveform generation method of the first message is associated with the capabilities of the second type of device, including:

[0553] The waveform generation method of the first message is the OOK waveform generation method containing CP, and the second type of device has the ability to process or receive OOK waveforms containing CP;

[0554] or,

[0555] The waveform generation method of the first message is the OOK waveform generation method without CP, and the second type of device has the ability to process or receive OOK waveforms without CP.

[0556] In some embodiments, the waveform of the first message is generated as an OOK waveform including CP, and the transceiver module 6101 is further configured to:

[0557] The second message is received from the response first message from the second type of device, which has the capability to process or receive an OOK waveform containing CP.

[0558] In some embodiments, the waveform of the first message is generated as an OOK waveform without CP, and the transceiver module 6101 is further configured to:

[0559] The second message is received from the response first message from the second type of device, which has the ability to process or receive OOK waveforms that do not contain CP.

[0560] In some embodiments, the waveform generation method of the first message is associated with the value range of the first parameter, including:

[0561] The waveform of the first message is generated using the OOK waveform generation method that includes CP, and the first parameter is less than or equal to the first threshold.

[0562] or,

[0563] The waveform of the first message is generated in the OOK waveform generation method without CP, and the first parameter is greater than or equal to the first threshold.

[0564] In some embodiments, the first indication information includes a value range of the first parameter, which is used to indicate the waveform generation method of the first message;

[0565] The first parameter is the number of OOK symbols contained in each OFDM symbol carrying the first message, or the first parameter is the number of OOK symbols contained in each OFDM symbol carrying the first message and the CP corresponding to each OFDM symbol.

[0566] In some embodiments, the range of values ​​for the first parameter is associated with at least one of the following:

[0567] The capabilities of the second type of device include: the ability of the second type of device to process or receive OOK waveforms containing CP, or the ability of the second type of device to process or receive OOK waveforms not containing CP;

[0568] The waveform generation methods for the first message include: an OOK waveform generation method that includes CP, or an OOK waveform generation method that does not include CP.

[0569] In some embodiments, the range of values ​​for the first parameter is associated with the capabilities of the second type of device, including:

[0570] The first parameter is less than or equal to the first threshold, and the second type of device has the ability to process or receive OOK waveforms containing CP;

[0571] or,

[0572] The first parameter is greater than or equal to the first threshold, and the second type of device has the ability to process or receive OOK waveforms that do not contain CP.

[0573] In some embodiments, if the first parameter is less than or equal to the first threshold, the transceiver module 6101 is further configured to:

[0574] The second message is received from the response first message from the second type of device, which has the capability to process or receive an OOK waveform containing CP.

[0575] In some embodiments, if the first parameter is greater than or equal to the first threshold, the transceiver module 6101 is further configured to:

[0576] The second message is received from the response first message from the second type of device, which has the ability to process or receive OOK waveforms that do not contain CP.

[0577] In some embodiments, the value range of the first parameter is associated with the waveform generation method of the first message, including:

[0578] If the first parameter is less than or equal to the first threshold, the waveform of the first message is generated in the OOK waveform generation method that includes CP.

[0579] or,

[0580] The first parameter is greater than or equal to the first threshold, and the waveform of the first message is generated in the OOK waveform generation method without CP.

[0581] In some embodiments, the value of the first parameter belongs to a first set, which includes at least one of the following:

[0582] 1,2,4,6,8,12,16,24,32.

[0583] In some embodiments, the first threshold value is one of the following:

[0584] 6,8,12,16.

[0585] In some embodiments, the waveform of the first message is generated using an OOK waveform generation method that includes CP, including:

[0586] The first message is carried on P OFDM symbols and the corresponding CPs of P OFDM symbols. The duration of each OFDM symbol and its corresponding CP is the first time unit, and the duration of each OOK symbol contained in each OFDM symbol is the second time unit.

[0587] The first time unit includes N equal second time units, where N is a positive integer.

[0588] In some embodiments, the waveform of the first message is generated using an OOK waveform generation method that does not include CP, including:

[0589] The first message is carried on Q OFDM symbols. The duration of each OFDM symbol is the first time unit, and the duration of each OOK symbol contained in each OFDM symbol is the second time unit.

[0590] The first time unit includes M equal second time units, where M is a positive integer.

[0591] In some embodiments, the first indication information is carried in an inventory trigger message, which is used to trigger a second type of device to participate in inventory.

[0592] In some embodiments, the waveform generation method used for the inventory trigger message is a predefined waveform generation method.

[0593] Optionally, the transceiver module 6101 is used to perform at least one of the communication steps such as sending and / or receiving performed by the first device 6100 in any of the above methods (e.g., steps S2101, S2102, S2201, S2202, S2301, S3101, but not limited thereto), which will not be elaborated here.

[0594] Figure 6b is an exemplary structural diagram of the second type of device proposed in an embodiment of this disclosure. The second type of device 6200 is used to perform any of the above methods. In some embodiments, as shown in Figure 6b, the second type of device 6200 may include a transceiver module 6201, wherein:

[0595] The transceiver module 6201 is used to receive first indication information, which indicates the waveform generation method of the first message from the first device;

[0596] The waveform generation method for the first message is either an OOK waveform generation method that includes CP or an OOK waveform generation method that does not include CP.

[0597] In some embodiments, the waveform generation method of the first message is associated with at least one of the following:

[0598] The capabilities of the second type of device include: the ability of the second type of device to process or receive OOK waveforms containing CP, or the ability of the second type of device to process or receive OOK waveforms not containing CP;

[0599] The first parameter can be a range of values, where the first parameter is the number of OOK symbols contained in each OFDM symbol carrying the first message, or the first parameter is the number of OOK symbols contained in each OFDM symbol carrying the first message and the CP corresponding to each OFDM symbol.

[0600] In some embodiments, the waveform generation method of the first message is associated with the capabilities of the second type of device, including:

[0601] The waveform generation method of the first message is the OOK waveform generation method containing CP, and the second type of device has the ability to process or receive OOK waveforms containing CP;

[0602] or,

[0603] The waveform generation method of the first message is the OOK waveform generation method without CP, and the second type of device has the ability to process or receive OOK waveforms without CP.

[0604] In some embodiments, the waveform of the first message is generated as an OOK waveform including CP, and the transceiver module 6201 is further configured to:

[0605] Send a second message in response to the first message to the first device, wherein the second type of device has the ability to process or receive an OOK waveform containing CP.

[0606] In some embodiments, the waveform of the first message is generated as an OOK waveform without CP, and the transceiver module 6201 is further configured to:

[0607] Send a second message in response to the first message to the first device, wherein the second type of device has the ability to process or receive OOK waveforms that do not contain CP.

[0608] In some embodiments, the waveform generation method of the first message is associated with the value range of the first parameter, including:

[0609] The waveform of the first message is generated using the OOK waveform generation method that includes CP, and the first parameter is less than or equal to the first threshold.

[0610] or,

[0611] The waveform of the first message is generated in the OOK waveform generation method without CP, and the first parameter is greater than or equal to the first threshold.

[0612] In some embodiments, the first indication information includes a value range of the first parameter, which is used to indicate the waveform generation method of the first message;

[0613] The first parameter is the number of OOK symbols contained in each OFDM symbol carrying the first message, or the first parameter is the number of OOK symbols contained in each OFDM symbol carrying the first message and the CP corresponding to each OFDM symbol.

[0614] In some embodiments, the range of values ​​for the first parameter is associated with at least one of the following:

[0615] The capabilities of the second type of device include: the ability of the second type of device to process or receive OOK waveforms containing CP, or the ability of the second type of device to process or receive OOK waveforms not containing CP;

[0616] The waveform generation methods for the first message include: an OOK waveform generation method that includes CP, or an OOK waveform generation method that does not include CP.

[0617] In some embodiments, the range of values ​​for the first parameter is associated with the capabilities of the second type of device, including:

[0618] The first parameter is less than or equal to the first threshold, and the second type of device has the ability to process or receive OOK waveforms containing CP;

[0619] or,

[0620] The first parameter is greater than or equal to the first threshold, and the second type of device has the ability to process or receive OOK waveforms that do not contain CP.

[0621] In some embodiments, if the first parameter is less than or equal to the first threshold, the transceiver module 6201 is further configured to:

[0622] The second message is received from the response first message from the second type of device, which has the capability to process or receive an OOK waveform containing CP.

[0623] In some embodiments, if the first parameter is greater than or equal to the first threshold, the transceiver module 6201 is further configured to:

[0624] The second message is received from the response first message from the second type of device, which has the ability to process or receive OOK waveforms that do not contain CP.

[0625] In some embodiments, the value range of the first parameter is associated with the waveform generation method of the first message, including:

[0626] If the first parameter is less than or equal to the first threshold, the waveform of the first message is generated in the OOK waveform generation method that includes CP.

[0627] or,

[0628] The first parameter is greater than or equal to the first threshold, and the waveform of the first message is generated in the OOK waveform generation method without CP.

[0629] In some embodiments, the value of the first parameter belongs to a first set, which includes at least one of the following:

[0630] 1,2,4,6,8,12,16,24,32.

[0631] In some embodiments, the first threshold value is one of the following:

[0632] 6,8,12,16.

[0633] In some embodiments, the waveform of the first message is generated using an OOK waveform generation method that includes CP, including:

[0634] The first message is carried on P OFDM symbols and the corresponding CPs of P OFDM symbols. The duration of each OFDM symbol and its corresponding CP is the first time unit, and the duration of each OOK symbol contained in each OFDM symbol is the second time unit.

[0635] The first time unit includes N equal second time units, where N is a positive integer.

[0636] In some embodiments, the waveform of the first message is generated using an OOK waveform generation method that does not include CP, including:

[0637] The first message is carried on Q OFDM symbols. The duration of each OFDM symbol is the first time unit, and the duration of each OOK symbol contained in each OFDM symbol is the second time unit.

[0638] The first time unit includes M equal second time units, where M is a positive integer.

[0639] In some embodiments, the first indication information is carried in an inventory trigger message, which is used to trigger a second type of device to participate in inventory.

[0640] In some embodiments, the waveform generation method used for the inventory trigger message is a predefined waveform generation method.

[0641] Optionally, the transceiver module 6201 is used to perform at least one of the communication steps such as sending and / or receiving performed by the second type of device 6200 in any of the above methods (e.g., steps S2101, S2102, S2201, S2202, S2301, S3101, but not limited thereto), which will not be elaborated here.

[0642] Figure 6c is an exemplary structural diagram of the first device proposed in an embodiment of this disclosure. The first device 6300 is used to perform any of the above methods. In some embodiments, as shown in Figure 6c, the first device 6300 may include a transceiver module 6301, wherein:

[0643] The transceiver module 6301 is used to send first indication information, which is used to indicate the value range of the first parameter;

[0644] Wherein, the first parameter is the number of OOK symbols contained in each OFDM symbol carrying the first message, or the first parameter is the number of OOK symbols contained in each OFDM symbol carrying the first message and the CP corresponding to each OFDM symbol; the first message is a message sent by the first device to the second type of device.

[0645] In some embodiments, the range of values ​​for the first parameter is associated with at least one of the following:

[0646] The capabilities of the second type of device include: the ability of the second type of device to process or receive OOK waveforms containing CP, or the ability of the second type of device to process or receive OOK waveforms not containing CP;

[0647] The waveform generation methods for the first message include: an OOK waveform generation method that includes CP, or an OOK waveform generation method that does not include CP.

[0648] In some embodiments, the range of values ​​for the first parameter is associated with the capabilities of the second type of device, including:

[0649] The first parameter is less than or equal to the first threshold, and the second type of device has the ability to process or receive OOK waveforms containing CP;

[0650] or,

[0651] The first parameter is greater than or equal to the first threshold, and the second type of device has the ability to process or receive OOK waveforms that do not contain CP.

[0652] In some embodiments, if the first parameter is less than or equal to the first threshold, the transceiver module 6301 is further configured to:

[0653] The second message is received from the response first message from the second type of device, which has the capability to process or receive an OOK waveform containing CP.

[0654] In some embodiments, if the first parameter is greater than or equal to the first threshold, the transceiver module 6301 is further configured to:

[0655] The second message is received from the response first message from the second type of device, which has the ability to process or receive OOK waveforms that do not contain CP.

[0656] In some embodiments, the value range of the first parameter is associated with the waveform generation method of the first message, including:

[0657] If the first parameter is less than or equal to the first threshold, the waveform of the first message is generated in the OOK waveform generation method that includes CP.

[0658] or,

[0659] The first parameter is greater than or equal to the first threshold, and the waveform of the first message is generated in the OOK waveform generation method without CP.

[0660] In some embodiments, the value of the first parameter belongs to a first set, which includes at least one of the following:

[0661] 1,2,4,6,8,12,16,24,32.

[0662] In some embodiments, the first threshold value is one of the following:

[0663] 6,8,12,16.

[0664] In some embodiments, the waveform of the first message is generated using an OOK waveform generation method that includes CP, including:

[0665] The first message is carried on P OFDM symbols and the corresponding CPs of P OFDM symbols. The duration of each OFDM symbol and its corresponding CP is the first time unit, and the duration of each OOK symbol contained in each OFDM symbol is the second time unit.

[0666] The first time unit includes N equal second time units, where N is a positive integer.

[0667] In some embodiments, the waveform of the first message is generated using an OOK waveform generation method that does not include CP, including:

[0668] The first message is carried on Q OFDM symbols. The duration of each OFDM symbol is the first time unit, and the duration of each OOK symbol contained in each OFDM symbol is the second time unit.

[0669] The first time unit includes M equal second time units, where M is a positive integer.

[0670] In some embodiments, the first indication information is carried in an inventory trigger message, which is used to trigger a second type of device to participate in inventory.

[0671] In some embodiments, the waveform generation method used for the inventory trigger message is a predefined waveform generation method.

[0672] The second network device is configured to send a first sensing signal and a second sensing signal, and the first network device is configured to receive the first sensing signal and the second sensing signal. The second indication information is used to indicate whether the phase of the first sensing signal and the phase of the second sensing signal are continuous.

[0673] Optionally, the transceiver module 6301 is used to perform at least one of the communication steps such as sending and / or receiving performed by the first device 6300 in any of the above methods (e.g., steps S4101, S4102, S4201, S4202, S4301, S5101, but not limited thereto), which will not be elaborated here.

[0674] Figure 6d is an exemplary structural diagram of the second type of device proposed in an embodiment of this disclosure. The second type of device 6400 is used to perform any of the above methods. In some embodiments, as shown in Figure 6d, the second type of device 6400 may include a transceiver module 6401, wherein:

[0675] The transceiver module 6401 is used to receive first indication information, which is used to indicate the value range of the first parameter;

[0676] Wherein, the first parameter is the number of OOK symbols contained in each OFDM symbol carrying the first message, or the first parameter is the number of OOK symbols contained in each OFDM symbol carrying the first message and the CP corresponding to each OFDM symbol; the first message is a message from the first device.

[0677] In some embodiments, the range of values ​​for the first parameter is associated with at least one of the following:

[0678] The capabilities of the second type of device include: the ability of the second type of device to process or receive OOK waveforms containing CP, or the ability of the second type of device to process or receive OOK waveforms not containing CP;

[0679] The waveform generation methods for the first message include: an OOK waveform generation method that includes CP, or an OOK waveform generation method that does not include CP.

[0680] In some embodiments, the range of values ​​for the first parameter is associated with the capabilities of the second type of device, including:

[0681] The first parameter is less than or equal to the first threshold, and the second type of device has the ability to process or receive OOK waveforms containing CP;

[0682] or,

[0683] The first parameter is greater than or equal to the first threshold, and the second type of device has the ability to process or receive OOK waveforms that do not contain CP.

[0684] In some embodiments, if the first parameter is less than or equal to the first threshold, the transceiver module 6401 is further configured to:

[0685] Send a second message in response to the first message to the first device, wherein the second type of device has the ability to process or receive an OOK waveform containing CP.

[0686] In some embodiments, if the first parameter is greater than or equal to the first threshold, the transceiver module 6401 is further configured to:

[0687] Send a second message in response to the first message to the first device, wherein the second type of device has the ability to process or receive OOK waveforms that do not contain CP.

[0688] In some embodiments, the value range of the first parameter is associated with the waveform generation method of the first message, including:

[0689] If the first parameter is less than or equal to the first threshold, the waveform of the first message is generated in the OOK waveform generation method that includes CP.

[0690] or,

[0691] The first parameter is greater than or equal to the first threshold, and the waveform of the first message is generated in the OOK waveform generation method without CP.

[0692] In some embodiments, the value of the first parameter belongs to a first set, which includes at least one of the following:

[0693] 1,2,4,6,8,12,16,24,32.

[0694] In some embodiments, the first threshold value is one of the following:

[0695] 6,8,12,16.

[0696] In some embodiments, the waveform of the first message is generated using an OOK waveform generation method that includes CP, including:

[0697] The first message is carried on P OFDM symbols and the corresponding CPs of P OFDM symbols. The duration of each OFDM symbol and its corresponding CP is the first time unit, and the duration of each OOK symbol contained in each OFDM symbol is the second time unit.

[0698] The first time unit includes N equal second time units, where N is a positive integer.

[0699] In some embodiments, the waveform of the first message is generated using an OOK waveform generation method that does not include CP, including:

[0700] The first message is carried on Q OFDM symbols. The duration of each OFDM symbol is the first time unit, and the duration of each OOK symbol contained in each OFDM symbol is the second time unit.

[0701] The first time unit includes M equal second time units, where M is a positive integer.

[0702] In some embodiments, the first indication information is carried in an inventory trigger message, which is used to trigger a second type of device to participate in inventory.

[0703] In some embodiments, the waveform generation method used for the inventory trigger message is a predefined waveform generation method.

[0704] Optionally, the transceiver module 6401 is used to perform at least one of the communication steps such as sending and / or receiving performed by the second type of device 6400 in any of the above methods (e.g., steps S4101, S4102, S4201, S4202, S4301, S5101, but not limited thereto), which will not be elaborated here.

[0705] Figure 7a is an exemplary structural diagram of the communication device proposed in an embodiment of this disclosure. The communication device 7100 can be a first network device (e.g., access network device, core network device, etc.), a first terminal device (e.g., user equipment, etc.), a chip, chip system, or processor that supports the first network device in implementing any of the above methods, or a chip, chip system, or processor that supports the first terminal device in implementing any of the above methods. The communication device 7100 can be used to implement the methods described in the above method embodiments; for details, please refer to the descriptions in the above method embodiments.

[0706] As shown in Figure 7a, the communication device 7100 is used to execute any of the above methods. In some embodiments, the communication device 7100 includes one or more processors 7101. The processor 7101 may be a general-purpose processor or a special-purpose processor, such as a baseband processor or a central processing unit. The baseband processor may be used to process communication protocols and communication data, and the central processing unit may be used to control communication devices (e.g., base stations, baseband chips, terminal devices, terminal chips, DUs or CUs, etc.), execute programs, and process program data. Optionally, the communication device 7100 is used to execute any of the above methods. Optionally, one or more processors 7101 are used to invoke instructions to cause the communication device 7100 to execute any of the above methods.

[0707] In some embodiments, the communication device 7100 further includes one or more transceivers 7102. When the communication device 7100 includes one or more transceivers 7102, the transceiver 7102 performs at least one of the communication steps such as sending and / or receiving in the above method (e.g., steps S2101, S2102, S2201, S2202, S2301, S3101, S4101, S4102, S4201, S4202, S4301, S5101, but not limited thereto). In optional embodiments, the transceiver may include a receiver and / or a transmitter, which may be separate or integrated. Optionally, the terms transceiver, transceiver unit, transceiver, transceiver circuit, interface circuit, interface, etc., can be used interchangeably; the terms transmitter, sending unit, transmitter, sending circuit, etc., can be used interchangeably; the terms receiver, receiving unit, receiver, receiving circuit, etc., can be used interchangeably.

[0708] In some embodiments, the communication device 7100 further includes one or more memories 7103 for storing data and / or instructions. Optionally, one or more processors 7101 are used to invoke instructions stored in the memory 7103 to cause the communication device 7100 to perform any of the above methods. Optionally, all or part of the memory 7103 may also be located outside the communication device 7100. In an optional embodiment, the communication device 7100 may include one or more interface circuits 7104. Optionally, the interface circuit 7104 is connected to the memory 7103 and can be used to receive data and / or instructions from the memory 7103 or other devices, and can be used to send data and / or instructions to the memory 7103 or other devices. For example, the interface circuit 7104 can read data and / or instructions stored in the memory 7103 and send the data and / or instructions to the processor 7101.

[0709] The communication device 7100 described in the above embodiments may be a network device or a terminal device, but the scope of the communication device 7100 described in this disclosure is not limited thereto, and the structure of the communication device 7100 may not be limited by FIG. 7a. The communication device may be a standalone device or may be part of a larger device. For example, the communication device may be: (1) a standalone integrated circuit IC, or chip, or chip system or subsystem; (2) a collection of one or more ICs, optionally, the IC collection may also include storage components for storing data, programs and / or instructions; (3) an ASIC, such as a modem; (4) a module that can be embedded in other devices; (5) a receiver, terminal device, smart terminal, cellular phone, wireless device, handheld device, mobile unit, vehicle device, network device, cloud device, artificial intelligence device, etc.; (6) others, etc.

[0710] Figure 7b is an exemplary structural diagram of a chip proposed in an embodiment of this disclosure. For cases where the communication device 7100 can be a chip or a chip system, please refer to the structural diagram of the chip 7200 shown in Figure 7b, but it is not limited thereto.

[0711] Chip 7200 includes one or more processors 7201. Chip 7200 is used to perform any of the above methods.

[0712] In some embodiments, chip 7200 further includes one or more interface circuits 7202. Optionally, terms such as interface circuit, interface, and transceiver pin can be used interchangeably. In some embodiments, chip 7200 further includes one or more memories 7203 for storing data and / or instructions. Optionally, all or part of the memories 7203 may be located outside of chip 7200. Optionally, the interface circuit 7202 is connected to the memories 7203, and the interface circuit 7202 can be used to receive data and / or instructions from the memories 7203 or other devices, and the interface circuit 7202 can be used to send data and / or instructions to the memories 7203 or other devices. For example, the interface circuit 7202 can read data and / or instructions stored in the memories 7203 and send the data and / or instructions to the processor 7201.

[0713] In some embodiments, the interface circuit 7202 performs at least one of the communication steps such as sending and / or receiving in the above-described method. The interface circuit 7202 performing at least one of the communication steps such as sending and / or receiving in the above-described method (e.g., steps S2101, S2102, S2201, S2202, S2301, S3101, S4101, S4102, S4201, S4202, S4301, S5101, but not limited thereto) refers, for example, to the interface circuit 7202 performing data and / or instruction interaction between the processor 7201, the chip 7200, the memory 7203, or the transceiver device. In some embodiments, the processor 7201 performs at least one of the other steps.

[0714] The modules and / or devices described in the various embodiments, such as virtual devices, physical devices, and chips, can be combined or separated arbitrarily as needed. Optionally, some or all steps can also be performed collaboratively by multiple modules and / or devices, which is not limited here.

[0715] This disclosure also proposes a storage medium storing instructions that, when executed on a communication device, cause the communication device to perform any of the above methods. Optionally, the storage medium is an electronic storage medium. Optionally, the storage medium is a computer-readable storage medium, but not limited thereto; it may also be a storage medium readable by other devices. Optionally, the storage medium may be a non-transitory storage medium, but not limited thereto; it may also be a temporary storage medium.

[0716] This disclosure also proposes a program product, including a program and / or instructions, which, when executed by a communication device, cause the communication device to perform any of the above methods. Optionally, the program product is a computer program product. Optionally, the program product is stored on the storage medium.

[0717] This disclosure also proposes a computer program that, when run on a computer, causes the computer to perform any of the above methods.

[0718] Those skilled in the art will recognize that the units and algorithm steps of the various examples described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are implemented in hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of this disclosure.

[0719] Those skilled in the art will understand that, for the sake of convenience and brevity, the specific working processes of the systems, devices, and units described above can be referred to the corresponding processes in the foregoing method embodiments, and will not be repeated here.

[0720] The above are merely specific embodiments of this disclosure, but the scope of protection of this disclosure is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this disclosure should be included within the scope of protection of this disclosure. Therefore, the scope of protection of this disclosure should be determined by the scope of the claims.

Claims

1. A communication method, characterized in that, Performed by a first device, the method includes: Send a first indication message, which is used to indicate the waveform generation method of the first message; Wherein, the first message is a message sent by the first device to the second type of device; the waveform generation method of the first message is either an OOK waveform generation method containing the cyclic prefix CP or an OOK waveform generation method without CP.

2. The method according to claim 1, characterized in that, The waveform generation method of the first message is associated with at least one of the following: The capabilities of the second type of device include: the ability of the second type of device to process or receive OOK waveforms containing CP, or the ability of the second type of device to process or receive OOK waveforms not containing CP; The first parameter can be a range of values, where the first parameter is the number of OOK symbols contained in each OFDM symbol carrying the first message, or the first parameter is the number of OOK symbols contained in each OFDM symbol carrying the first message and the CP corresponding to each OFDM symbol.

3. The method according to claim 2, characterized in that, The waveform generation method of the first message is associated with the capabilities of the second type of device, including: The waveform of the first message is generated in the form of an OOK waveform including CP, and the second type of device has the ability to process or receive an OOK waveform including CP; or, The waveform of the first message is generated in an OOK waveform generation method that does not include CP, and the second type of device has the ability to process or receive OOK waveforms that do not include CP.

4. The method according to claim 2 or 3, characterized in that, The waveform of the first message is generated using an OOK waveform generation method that includes CP. The method further includes: The device receives a second message in response to the first message from a second type of device, which has the capability to process or receive an OOK waveform containing CP.

5. The method according to claim 2 or 3, characterized in that, The waveform of the first message is generated using an OOK waveform generation method that does not include CP. The method further includes: The device receives a second message in response to the first message from a second type of device, which has the capability to process or receive OOK waveforms that do not contain CP.

6. The method according to claim 2, characterized in that, The waveform generation method of the first message is related to the value range of the first parameter, including: The waveform of the first message is generated using an OOK waveform generation method that includes CP, and the first parameter is less than or equal to the first threshold. or, The waveform of the first message is generated in an OOK waveform generation method that does not include CP, and the first parameter is greater than or equal to the first threshold.

7. The method according to claim 1, characterized in that, The first indication information includes the value range of the first parameter, which is used to indicate the waveform generation method of the first message; The first parameter is the number of OOK symbols contained in each OFDM symbol carrying the first message, or the first parameter is the number of OOK symbols contained in each OFDM symbol carrying the first message and the CP corresponding to each OFDM symbol.

8. The method according to claim 7, characterized in that, The range of values ​​for the first parameter is associated with at least one of the following: The capabilities of the second type of device include: the ability of the second type of device to process or receive OOK waveforms containing CP, or the ability of the second type of device to process or receive OOK waveforms not containing CP; The waveform generation method of the first message includes: an OOK waveform generation method that includes CP, or an OOK waveform generation method that does not include CP.

9. The method according to claim 8, characterized in that, The range of values ​​for the first parameter is related to the capabilities of the second type of device, including: The first parameter is less than or equal to the first threshold, and the second type of device has the ability to process or receive OOK waveforms containing CP; or, The first parameter is greater than or equal to the first threshold, and the second type of device has the ability to process or receive OOK waveforms that do not contain CP.

10. The method according to claim 8 or 9, characterized in that, The method further includes: if the first parameter is less than or equal to a first threshold. The device receives a second message in response to the first message from a second type of device, which has the capability to process or receive an OOK waveform containing CP.

11. The method according to claim 8 or 9, characterized in that, The method further includes: the first parameter being greater than or equal to the first threshold. The device receives a second message in response to the first message from a second type of device, which has the capability to process or receive OOK waveforms that do not contain CP.

12. The method according to claim 7, characterized in that, The value range of the first parameter is related to the waveform generation method of the first message, including: The first parameter is less than or equal to the first threshold, and the waveform generation method of the first message is the OOK waveform generation method that includes CP; or, The first parameter is greater than or equal to the first threshold, and the waveform of the first message is generated in the OOK waveform generation method without CP.

13. The method according to any one of claims 6-12, characterized in that, The value of the first parameter belongs to a first set, and the first set includes at least one of the following: 1,2,4,6,8,12,16,24,32。 14. The method according to any one of claims 6-13, characterized in that, The first threshold value is one of the following: 6,8,12,16。 15. The method according to any one of claims 1-14, characterized in that, The waveform generation method for the first message is an OOK waveform generation method that includes CP, including: The first message is carried on P OFDM symbols and the corresponding CPs of the P OFDM symbols. The duration of each OFDM symbol and its corresponding CP is a first time unit, and the duration of each OOK symbol contained in each OFDM symbol is a second time unit. The first time unit includes N equal second time units, where N is a positive integer.

16. The method according to any one of claims 1-14, characterized in that, The waveform generation method for the first message is an OOK waveform generation method that does not include CP, including: The first message is carried on Q OFDM symbols, the duration of each OFDM symbol is the first time unit, and the duration of each OOK symbol contained in each OFDM symbol is the second time unit; The first time unit includes M equal second time units, where M is a positive integer.

17. The method according to any one of claims 1-16, characterized in that, The first indication information is carried in the inventory trigger message, which is used to trigger the second type of device to participate in inventory.

18. The method according to claim 17, characterized in that, The waveform generation method used for the disk storage trigger message is a predefined waveform generation method.

19. A communication method, characterized in that, Performed by a second type of device, the method includes: Receive first indication information, the first indication information being used to indicate the waveform generation method of the first message from the first device; The waveform generation method of the first message is either an OOK waveform generation method that includes CP or an OOK waveform generation method that does not include CP.

20. The method according to claim 19, characterized in that, The waveform generation method of the first message is associated with at least one of the following: The capabilities of the second type of device include: the ability of the second type of device to process or receive OOK waveforms containing CP, or the ability of the second type of device to process or receive OOK waveforms not containing CP; The first parameter can be a range of values, where the first parameter is the number of OOK symbols contained in each OFDM symbol carrying the first message, or the first parameter is the number of OOK symbols contained in each OFDM symbol carrying the first message and the CP corresponding to each OFDM symbol.

21. The method according to claim 20, characterized in that, The waveform generation method of the first message is associated with the capabilities of the second type of device, including: The waveform of the first message is generated in the form of an OOK waveform including CP, and the second type of device has the ability to process or receive an OOK waveform including CP; or, The waveform of the first message is generated in an OOK waveform generation method that does not include CP, and the second type of device has the ability to process or receive OOK waveforms that do not include CP.

22. The method according to claim 20 or 21, characterized in that, The waveform of the first message is generated using an OOK waveform generation method that includes CP. The method further includes: Send a second message in response to the first message to the first device, wherein the second type of device has the ability to process or receive an OOK waveform containing CP.

23. The method according to claim 20 or 21, characterized in that, The waveform of the first message is generated using an OOK waveform generation method that does not include CP. The method further includes: Send a second message in response to the first message to the first device, wherein the second type of device has the ability to process or receive OOK waveforms that do not contain CP.

24. The method according to claim 20, characterized in that, The waveform generation method of the first message is related to the value range of the first parameter, including: The waveform of the first message is generated using an OOK waveform generation method that includes CP, and the first parameter is less than or equal to the first threshold. or, The waveform of the first message is generated in an OOK waveform generation method that does not include CP, and the first parameter is greater than or equal to the first threshold.

25. The method according to claim 19, characterized in that, The first indication information includes the value range of the first parameter, which is used to indicate the waveform generation method of the first message; The first parameter is the number of OOK symbols contained in each OFDM symbol carrying the first message, or the first parameter is the number of OOK symbols contained in each OFDM symbol carrying the first message and the CP corresponding to each OFDM symbol.

26. The method according to claim 25, characterized in that, The range of values ​​for the first parameter is associated with at least one of the following: The capabilities of the second type of device include: the ability of the second type of device to process or receive OOK waveforms containing CP, or the ability of the second type of device to process or receive OOK waveforms not containing CP; The waveform generation method of the first message includes: an OOK waveform generation method that includes CP, or an OOK waveform generation method that does not include CP.

27. The method according to claim 26, characterized in that, The range of values ​​for the first parameter is related to the capabilities of the second type of device, including: The first parameter is less than or equal to the first threshold, and the second type of device has the ability to process or receive OOK waveforms containing CP; or, The first parameter is greater than or equal to the first threshold, and the second type of device has the ability to process or receive OOK waveforms that do not contain CP.

28. The method according to claim 26 or 27, characterized in that, The method further includes: if the first parameter is less than or equal to a first threshold. The device receives a second message in response to the first message from a second type of device, which has the capability to process or receive an OOK waveform containing CP.

29. The method according to claim 26 or 27, characterized in that, The method further includes: the first parameter being greater than or equal to the first threshold. The device receives a second message in response to the first message from a second type of device, which has the capability to process or receive OOK waveforms that do not contain CP.

30. The method according to claim 25, characterized in that, The value range of the first parameter is related to the waveform generation method of the first message, including: The first parameter is less than or equal to the first threshold, and the waveform generation method of the first message is the OOK waveform generation method that includes CP; or, The first parameter is greater than or equal to the first threshold, and the waveform of the first message is generated in the OOK waveform generation method without CP.

31. The method according to any one of claims 24-30, characterized in that, The value of the first parameter belongs to a first set, and the first set includes at least one of the following: 1,2,4,6,8,12,16,24,32。 32. The method according to any one of claims 24-31, characterized in that, The first threshold value is one of the following: 6,8,12,16。 33. The method according to any one of claims 19-32, characterized in that, The waveform generation method for the first message is an OOK waveform generation method that includes CP, including: The first message is carried on P OFDM symbols and the corresponding CPs of the P OFDM symbols. The duration of each OFDM symbol and its corresponding CP is a first time unit, and the duration of each OOK symbol contained in each OFDM symbol is a second time unit. The first time unit includes N equal second time units, where N is a positive integer.

34. The method according to any one of claims 19-32, characterized in that, The waveform generation method for the first message is an OOK waveform generation method that does not include CP, including: The first message is carried on Q OFDM symbols, the duration of each OFDM symbol is the first time unit, and the duration of each OOK symbol contained in each OFDM symbol is the second time unit; The first time unit includes M equal second time units, where M is a positive integer.

35. The method according to any one of claims 19-34, characterized in that, The first indication information is carried in the inventory trigger message, which is used to trigger the second type of device to participate in the inventory.

36. The method according to claim 35, characterized in that, The waveform generation method used for the disk storage trigger message is a predefined waveform generation method.

37. A first device, characterized in that, include: The transceiver module is used to send first indication information, which is used to indicate the waveform generation method of the first message; The first message is a message sent by the first device to the second type of device; the waveform of the first message is generated by either an OOK waveform generation method that includes CP or an OOK waveform generation method that does not include CP.

38. A second type of device, characterized in that, include: The transceiver module is used to receive first indication information, which indicates the waveform generation method of the first message from the first device. The waveform generation method of the first message is either an OOK waveform generation method that includes CP or an OOK waveform generation method that does not include CP.

39. A communication device, characterized in that, The communication device is used to perform the communication method according to any one of claims 1 to 36.

40. A communication system, characterized in that, The device includes a first type of device and a second type of device, wherein the first type of device is configured to implement the communication method of any one of claims 1 to 18, and the second type of device is configured to implement the communication method of any one of claims 19 to 36.

41. A storage medium storing instructions, characterized in that, When the instruction is executed on the communication device, the communication device performs the communication method as described in any one of claims 1 to 36.

42. A program product comprising at least one of a program and instructions, characterized in that, When at least one of the programs or instructions is executed by the communication device, it implements the steps of the communication method according to any one of claims 1 to 36.

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