Communication method and apparatus

Abstract

Disclosed in embodiments of the present disclosure are a communication method and apparatus. The method comprises: a first device sends a first message to a second device, the second device being a network device or an intermediate node in an ambient Internet of Things scenario; the first device receives a second message sent by the second device; and on the basis of the second message, the first device determines configuration information allocated to the first device by the second device. By implementing the embodiments of the present disclosure, the network device or the intermediate node in the ambient Internet of Things scenario can allocate the configuration information (e.g., a resource) to an ambient Internet of Things device, so that the ambient Internet of Things device can use the resource to send data and / or an identifier, thereby solving the problem of how to support an access process or data transmission of the ambient Internet of Things device in the ambient Internet of Things scenario.

Description

Communication method and device Technical Field

[0001] The present disclosure relates to the field of communication technology, and in particular to a communication method and device. Background Art

[0002] To conserve power and reduce device complexity in communication systems, new devices, such as the Ambient Internet of Things (A-IoT) or A-IoT, have been introduced. Instead of generating their own energy, these devices can harvest energy, such as from signals sent by the surrounding environment or nearby devices, and use this harvested energy for communication. These devices also eliminate the need for batteries, which can be replaced. Consequently, communication based on these devices requires minimal cost, power consumption, and size.

[0003] Summary of the Invention

[0004] The embodiment of the present disclosure provides a communication method.

[0005] According to a first aspect of an embodiment of the present disclosure, a communication method is provided. The method is performed by a first device, and the method includes:

[0006] Sending a first message to a second device, where the second device is a network device or an intermediate node in an ambient Internet of Things scenario;

[0007] receiving a second message sent by the second device;

[0008] Determining, based on the second message, configuration information allocated by the second device to the first device, where the first device is an environmental Internet of Things device;

[0009] The first message includes at least one of the following:

[0010] a first leader sequence;

[0011] a device identifier of the first device;

[0012] A device type of the first device.

[0013] According to a second aspect of an embodiment of the present disclosure, a communication method is provided, where the method is performed by a second device and includes:

[0014] receiving a first message sent by a first device, where the first device is an environmental Internet of Things device;

[0015] Sending a second message to the first device, where the second message is used to determine configuration information allocated by the second device to the first device, where the second device is a network device or an intermediate node in an environmental Internet of Things scenario;

[0016] The first message includes at least one of the following:

[0017] a first leader sequence;

[0018] a device identifier of the first device;

[0019] A device type of the first device.

[0020] According to a third aspect of an embodiment of the present disclosure, a first device is provided, including:

[0021] A transceiver module, configured to send a first message to a second device, where the second device is a network device or an intermediate node in an environmental Internet of Things scenario;

[0022] The transceiver module is further configured to receive a second message sent by the second device;

[0023] a processing module, configured to determine, based on the second message, configuration information allocated by the second device to the first device, where the first device is an environmental Internet of Things device;

[0024] The first message includes at least one of the following:

[0025] a first leader sequence;

[0026] a device identifier of the first device;

[0027] A device type of the first device.

[0028] According to a fourth aspect of the embodiments of the present disclosure, a second device is provided, including:

[0029] a transceiver module, configured to receive a first message sent by a first device, where the first device is an environmental Internet of Things device;

[0030] The transceiver module is further configured to send a second message to the first device, where the second message is used to determine configuration information allocated by the second device to the first device, where the second device is a network device or an intermediate node in an environmental Internet of Things scenario;

[0031] The first message includes at least one of the following:

[0032] a first leader sequence;

[0033] a device identifier of the first device;

[0034] A device type of the first device.

[0035] According to a fifth aspect of an embodiment of the present disclosure, a communication system is provided, including:

[0036] A first device, configured to perform an optional implementation of the first aspect;

[0037] The second device is configured to execute an optional implementation of the aforementioned second aspect.

[0038] According to a sixth aspect of an embodiment of the present disclosure, a communication device is provided, including: one or more processors;

[0039] The processor is used to call instructions to enable the communication device to execute the optional implementation of the first and second aspects mentioned above.

[0040] According to a seventh aspect of an embodiment of the present disclosure, a storage medium is proposed, which stores instructions. When the instructions are executed on a communication device, the communication device executes optional implementation methods of the aforementioned first and second aspects.

[0041] According to the technical solution disclosed in the present invention, it is possible to implement the allocation of configuration information (such as resources) for environmental Internet of Things devices by network devices or intermediate nodes in the environmental Internet of Things scenario, so that the environmental Internet of Things devices can use the resources to send data and / or identification, and can solve the problem of how to support the access process or data transmission of environmental Internet of Things devices in the environmental Internet of Things scenario. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure, the following drawings required for describing the embodiments are introduced. The following drawings are merely some embodiments of the present disclosure and do not impose specific limitations on the protection scope of the present disclosure.

[0043] FIG1 is a schematic diagram of the architecture of a communication system provided by an embodiment of the present disclosure;

[0044] 2A to 2E are schematic diagrams of the architecture of an A-IoT device communicating with a network device and / or a terminal according to an embodiment of the present disclosure;

[0045] FIG3 is an interactive schematic diagram of a communication method according to an embodiment of the present disclosure;

[0046] FIG4A is a flow chart showing a communication method according to an embodiment of the present disclosure;

[0047] FIG4B is a flow chart illustrating a communication method according to an embodiment of the present disclosure;

[0048] FIG5A is a flow chart showing a communication method according to an embodiment of the present disclosure;

[0049] FIG5B is a flow chart illustrating a communication method according to an embodiment of the present disclosure;

[0050] FIG6 is an interactive diagram of a communication method proposed in an embodiment of the present disclosure;

[0051] FIG7A is a schematic structural diagram of a first device proposed in an embodiment of the present disclosure;

[0052] FIG7B is a schematic structural diagram of a second device proposed in an embodiment of the present disclosure;

[0053] FIG8A is a schematic structural diagram of a communication device 8100 proposed in an embodiment of the present disclosure;

[0054] FIG8B is a schematic structural diagram of a chip 8200 according to an embodiment of the present disclosure. DETAILED DESCRIPTION

[0055] The embodiments of the present disclosure provide a communication method and a device thereof.

[0056] In a first aspect, an embodiment of the present disclosure proposes a communication method, which is executed by a first device, and the method includes: sending a first message to a second device, where the second device is a network device or an intermediate node in an environmental Internet of Things scenario; receiving a second message sent by the second device; determining, based on the second message, configuration information allocated by the second device to the first device, where the first device is an environmental Internet of Things device; wherein the first message includes at least one of the following: a first preamble sequence; a device identifier of the first device; and a device type of the first device.

[0057] In the above embodiment, a first message (such as at least one of a first preamble sequence, a device identifier, a device type, etc.) is sent through the environmental Internet of Things device, so that a second device (such as a network device) that receives the first message sends a second message to the environmental Internet of Things device based on the first message, so that the environmental Internet of Things device determines the configuration information (such as resources) allocated by the second device to the environmental Internet of Things device based on the second message. This can enable the network device or intermediate node to allocate configuration information (such as resources) to the environmental Internet of Things device in the environmental Internet of Things scenario, so that the environmental Internet of Things device can use the resources to send data and / or identifiers, and can solve the problem of how to support the access process or data transmission of the environmental Internet of Things device in the environmental Internet of Things scenario.

[0058] In combination with some embodiments of the first aspect, in some embodiments, sending the first message to the second device includes: sending the first message to the second device, wherein the first device is an environmental Internet of Things device with energy storage and signal generation functions.

[0059] In the above embodiment, for an environmental Internet of Things device with energy storage and signal generation functions, a first message can be sent directly to a second device, so that the environmental Internet of Things device can request the second device to allocate configuration information (such as resources) based on the first message.

[0060] In combination with some embodiments of the first aspect, in some embodiments, the method further includes: receiving a first signal sent by the second device; wherein, sending the first message to the second device includes: sending the first message to the second device through backscatter transmission of the first signal; wherein, the first device is an environmental Internet of Things device with energy storage and no signal generation and amplification functions, or, the first device is an environmental Internet of Things device with energy storage and signal amplification functions.

[0061] In the above embodiment, for an environmental Internet of Things device with energy storage but no signal generation and amplification functions, or an environmental Internet of Things device with energy storage and signal amplification functions, a first message can be sent to a second device through backscatter transmission technology, so that the environmental Internet of Things device can request the second device to allocate configuration information (such as resources) based on the first message.

[0062] In conjunction with some embodiments of the first aspect, in some embodiments, the method further includes:

[0063] The first preamble sequence is selected from a corresponding preamble sequence group according to the device type of the first device, where the first preamble sequence is used to indicate the device type of the first device.

[0064] In the above embodiment, the first device may select the first preamble sequence from the corresponding preamble sequence group according to the device type, and implicitly indicate the device type of the first device through the selected first preamble sequence, thereby saving signaling overhead through implicit indication.

[0065] In combination with some embodiments of the first aspect, in some embodiments, the first message further includes an indication field, where the indication field is used to indicate a device type of the first device.

[0066] In the above embodiment, the device type of the first device may be displayed through the indication field in the first message.

[0067] In combination with some embodiments of the first aspect, in some embodiments, the second message includes at least one of the following: a second preamble sequence, the second preamble sequence is used for synchronization adjustment of the first device; a timing advance, the timing advance is used for synchronization adjustment of the first device; a first resource, the first resource is used by the first device to send data to be sent; a device identifier of the first device; and a dynamic identifier assigned to the first device by the second device.

[0068] In combination with some embodiments of the first aspect, in some embodiments, the method further includes: sending data to be sent on the first resource, wherein the first device is an environmental Internet of Things device with energy storage and signal generation function; or, sending the data to be sent on the first resource by backscatter transmission through the second message or the second signal sent by the second device, wherein the first device is an environmental Internet of Things device with energy storage and no signal generation and amplification function, or the first device is an environmental Internet of Things device with energy storage and signal amplification function.

[0069] In the above embodiment, different types of environmental Internet of Things devices can use corresponding methods to send the data to be sent on the first resource.

[0070] In combination with some embodiments of the first aspect, in some embodiments, the data to be sent carries the device identifier of the first device and / or the dynamic identifier.

[0071] In combination with some embodiments of the first aspect, in some embodiments, the first resource includes at least one of the following: physical uplink control channel PUCCH resources; physical uplink shared channel PUSCH resources; time domain position; frequency domain position.

[0072] In combination with some embodiments of the first aspect, in some embodiments, the method further includes: starting a timer, the timer being used to monitor the duration of the second message; and determining whether to resend the first message during the running of the timer.

[0073] In the above embodiment, a timer is defined, and whether the first message needs to be resent is determined by the timer, so as to improve the success rate of the environmental Internet of Things device sending the first message.

[0074] In combination with some embodiments of the first aspect, in some embodiments, determining whether to resend the first message during the operation of the timer includes: stopping the timer when the second message is monitored; or resending the first message when the second message is not monitored and the timer times out.

[0075] In combination with some embodiments of the first aspect, in some embodiments, monitoring the second message includes any one of the following: receiving the second message; the device identifier carried in the received second message matches the device identifier of the first device.

[0076] In combination with some embodiments of the first aspect, in some embodiments, the method further includes: determining a first transmission power, the first transmission power being the transmission power used by the first device when it last sent the first message before the timer was started; determining a second transmission power based on the first transmission power and the power climbing step; wherein, if the second message is not detected and the timer expires, resending the first message includes: if the second message is not detected and the timer expires, resending the first message using the second transmission power.

[0077] In combination with some embodiments of the first aspect, in some embodiments, determining the second transmit power based on the first transmit power and the power climbing step includes: adding the power climbing step to the first transmit power to determine the second transmit power.

[0078] In combination with some embodiments of the first aspect, in some embodiments, the first message is sent for the first time at an initial transmission power.

[0079] In combination with some embodiments of the first aspect, in some embodiments, the method further includes: acquiring a second resource used to send the first message; the second resource is used by the first device to send the first message.

[0080] In combination with some embodiments of the first aspect, in some embodiments, the method further includes: obtaining access configuration; the access configuration includes at least one of the following: the initial transmit power, the power climbing step, the configuration of the timer, and the second resource.

[0081] In combination with some embodiments of the first aspect, in some embodiments, obtaining the access configuration includes: receiving a system information block SIB sent by the second device, the SIB including the access configuration; or, receiving dedicated signaling sent by the second device, the dedicated signaling including the access configuration; or, receiving a third signal sent by the second device, the third signal including the access configuration.

[0082] In combination with some embodiments of the first aspect, in some embodiments, the first signal, the second signal and the third signal are excitation signals.

[0083] In combination with some embodiments of the first aspect, in some embodiments, the second resource includes at least one of the following: physical random access channel PRACH resource; PUSCH resource; time domain position; frequency domain position.

[0084] In a second aspect, an embodiment of the present disclosure proposes a communication method, which is executed by a second device, and the method includes: receiving a first message sent by a first device, where the first device is an environmental Internet of Things device; sending a second message to the first device, where the second message is used to determine the configuration information assigned by the second device to the first device, where the second device is a network device or an intermediate node in an environmental Internet of Things scenario; wherein the first message includes at least one of the following: a first preamble sequence; a device identifier of the first device; and a device type of the first device.

[0085] In combination with some embodiments of the second aspect, in some embodiments, receiving the first message sent by the first device includes: receiving the first message sent by the first device, where the first device is an environmental Internet of Things device with energy storage and signal generation functions.

[0086] In combination with some embodiments of the second aspect, in some embodiments, the method further includes: sending a first signal to the first device so that the first device performs backscatter transmission of the first message sent to the second device through the first signal, wherein the first device is an environmental Internet of Things device with energy storage and no signal generation and amplification functions, or the first device is an environmental Internet of Things device with energy storage and signal amplification functions.

[0087] In combination with some embodiments of the second aspect, in some embodiments, the first preamble sequence is a preamble sequence selected by the first device in the corresponding preamble sequence group according to the device type of the first device; the method also includes: determining the device type of the first device based on the first preamble sequence carried in the first message.

[0088] In combination with some embodiments of the second aspect, in some embodiments, the first message further includes an indication field, and the indication field is used to indicate a device type of the first device.

[0089] In combination with some embodiments of the second aspect, in some embodiments, the second message includes at least one of the following: a second preamble sequence, the second preamble sequence is used for synchronization adjustment of the first device; a timing advance, the timing advance is used for synchronization adjustment of the first device; a first resource, the first resource is used by the first device to send data to be sent; a device identifier of the first device; and a dynamic identifier assigned to the first device by the second device.

[0090] In combination with some embodiments of the second aspect, in some embodiments, the first resource includes at least one of the following: physical uplink control channel PUCCH resources; physical uplink shared channel PUSCH resources; time domain position; frequency domain position.

[0091] In combination with some embodiments of the second aspect, in some embodiments, the first device is an environmental Internet of Things device with energy storage and no signal generation and amplification functions, or the first device is an environmental Internet of Things device with energy storage and signal amplification functions, then the data to be sent is data sent by the first device through backscatter transmission of the second message or the second signal sent by the second device.

[0092] In combination with some embodiments of the second aspect, in some embodiments, the data to be sent carries the device identifier of the first device and / or the dynamic identifier.

[0093] In combination with some embodiments of the second aspect, in some embodiments, the method also includes any one of the following: sending a system information block SIB, the SIB including the access configuration; sending dedicated signaling, the dedicated signaling including the access configuration; sending a third signal, the third signal including the access configuration.

[0094] In combination with some embodiments of the second aspect, in some embodiments, the first signal, the second signal and the third signal are excitation signals.

[0095] In combination with some embodiments of the second aspect, in some embodiments, the access configuration includes at least one of the following: a second resource, which is a resource used by the first device to send the first message; the initial sending power of the first message; the power climbing step; the configuration of a timer, which is used to monitor the duration of the second message, and the timer is used by the first device to determine whether to resend the first message.

[0096] In combination with some embodiments of the second aspect, in some embodiments, the second resource includes at least one of the following: physical random access channel PRACH resource; PUSCH resource; time domain position; frequency domain position.

[0097] In a third aspect, an embodiment of the present disclosure proposes a first device, comprising at least one of a transceiver module and a processing module; wherein the first device is used to execute an optional implementation method of the first aspect.

[0098] In a fourth aspect, an embodiment of the present disclosure proposes a second device, comprising at least one of a transceiver module and a processing module; wherein the second device is used to execute the optional implementation method of the second aspect.

[0099] In a fifth aspect, an embodiment of the present disclosure provides a communication system, including:

[0100] A first device, configured as an optional implementation of the first aspect;

[0101] The second device is configured to execute an optional implementation of the aforementioned second aspect.

[0102] In a sixth aspect, an embodiment of the present disclosure proposes a communication device, comprising: one or more processors; wherein the processor is used to call instructions to enable the communication device to execute the optional implementation method of the aforementioned first aspect.

[0103] In a seventh aspect, an embodiment of the present disclosure proposes a communication device, comprising: one or more processors; wherein the processor is used to call instructions to enable the communication device to execute the optional implementation method of the aforementioned second aspect.

[0104] In an eighth aspect, an embodiment of the present disclosure proposes a storage medium storing instructions. When the instructions are executed on a communication device, the communication device executes optional implementation methods of the aforementioned first and second aspects.

[0105] In a ninth aspect, an embodiment of the present disclosure proposes a program product. When the program product is executed by a communication device, the communication device executes the method described in the optional implementation of the first and second aspects.

[0106] In a tenth aspect, an embodiment of the present disclosure proposes a computer program, which, when executed on a computer, enables the computer to execute the method described in the optional implementation of the first and second aspects.

[0107] In an eleventh aspect, an embodiment of the present disclosure provides a chip or a chip system, wherein the chip or chip system includes a processing circuit configured to execute the method described in the optional implementation of the first and second aspects above.

[0108] It is understandable that the first device, the second device, the communication system, the storage medium, the program product, the computer program, the chip, or the chip system described above are all used to perform the method proposed in the embodiments of the present disclosure. Therefore, the beneficial effects that can be achieved can refer to the beneficial effects of the corresponding methods and will not be repeated here.

[0109] The present disclosure provides a communication method and apparatus. In some embodiments, the terms information processing method, communication method, etc. are interchangeable, the terms information processing apparatus, communication apparatus, etc. are interchangeable, and the terms information processing system, communication system, etc. are interchangeable.

[0110] The embodiments of the present disclosure are not exhaustive and are merely illustrative of some embodiments, and are not intended to be a specific limitation on the scope of protection of the present disclosure. In the absence of contradiction, each step in a certain 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 certain embodiment can also be implemented as an independent embodiment, and the order of the steps in a certain embodiment can be arbitrarily exchanged. In addition, the optional implementation methods in a certain embodiment can be arbitrarily combined; in addition, the embodiments can be arbitrarily combined. For example, some or all steps of different embodiments can be arbitrarily combined, and a certain embodiment can be arbitrarily combined with the optional implementation methods of other embodiments.

[0111] In each embodiment of the present disclosure, unless otherwise specified or provided for by logic, the terms and / or descriptions between the embodiments are consistent and can be referenced by each other. The technical features in different embodiments can be combined to form a new embodiment based on their inherent logical relationships.

[0112] The terms used in the embodiments of the present disclosure are only for the purpose of describing specific embodiments and are not intended to limit the present disclosure.

[0113] In the embodiments of the present disclosure, unless otherwise specified, elements expressed in the singular, such as "a", "an", "the", "above", "said", "the", "the", etc., may mean "one and only one", or "one or more", "at least one", etc. For example, when using articles such as "a", "an", "the" in English in translation, the noun following the article may be understood as a singular expression or a plural expression.

[0114] In the embodiments of the present disclosure, “plurality” refers to two or more.

[0115] In some embodiments, the terms "at least one," "one or more," "a plurality of," "multiple," etc. may be used interchangeably.

[0116] In some embodiments, descriptions such as "at least one of A and B," "A and / or B," "A in one case, B in another case," or "in response to one case A, in response to another case B" may include the following technical solutions depending on the situation: in some embodiments, A (A is executed independently of B); in some embodiments, B (B is executed independently of A); in some embodiments, execution is selected from A and B (A and B are selectively executed); and in some embodiments, A and B (both A and B are executed). The above is also applicable when there are more branches such as A, B, and C.

[0117] In some embodiments, "A or B" and other descriptions may include the following technical solutions depending on the situation: in some embodiments, A (A is executed independently of B); in some embodiments, B (B is executed independently of A); in some embodiments, execution is selected from A and B (A and B are selectively executed). The above is also applicable when there are more branches such as A, B, C, etc.

[0118] The prefixes such as "first" and "second" in the embodiments of the present disclosure are only used to distinguish different description objects and do not constitute any restriction on the position, order, priority, quantity or content of the description objects. For the statement of the description object, please refer to the description in the context of the claims or embodiments, and no unnecessary restriction should be constituted due to the use of prefixes. For example, if the description object is a "field", the ordinal number before the "field" in the "first field" and the "second field" does not limit the position or order between the "fields". "First" and "second" do not limit whether the "fields" they modify are in the same message, nor do they limit the order of the "first field" and the "second field". For another example, if the description object is a "level", the ordinal number before the "level" in the "first level" and the "second level" does not limit the priority between the "levels". For another example, the number of description objects is not limited by the ordinal number and can be one or more. Taking "first device" as an example, the number of "devices" can be one or more. In addition, the objects modified by different prefixes can be the same or different. For example, if the description object is "device", then the "first device" and the "second device" can be the same device or different devices, and their types can be the same or different; for another example, if the description object is "information", then the "first information" and the "second information" can be the same information or different information, and their contents can be the same or different.

[0119] In some embodiments, “including A,” “comprising A,” “used to indicate A,” and “carrying A” can be interpreted as directly carrying A or indirectly indicating A.

[0120] In some embodiments, terms such as "time / frequency" and "time / frequency domain" refer to the time domain and / or the frequency domain.

[0121] In some embodiments, terms such as "in response to...", "in response to determining...", "in the case of...", "at the time of...", "when...", "if...", "if...", etc. can be used interchangeably.

[0122] In some embodiments, terms such as "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 less than", and "above" can be replaced with each other, and terms such as "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" can be replaced with each other.

[0123] In some embodiments, devices and equipment can be interpreted as physical or virtual, and their names are not limited to the names recorded in the embodiments. In some cases, they can also be understood as "equipment", "device", "circuit", "network element", "node", "function", "unit", "section", "system", "network", "chip", "chip system", "entity", "subject", etc.

[0124] In some embodiments, "network" can be interpreted as devices included in the network, such as access network equipment, core network equipment, etc.

[0125] In some embodiments, "access network device (AN device)" may also be referred to as "radio access network device (RAN device)", "base station (BS)", "radio base station", "fixed station", and in some embodiments may also be understood as "node", "access point", "transmission point (TP)", "reception point (RP)", "transmission and / or 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", "bandwidth part (BWP)", etc.

[0126] In some embodiments, "terminal" or "terminal device" may be referred to as "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, client, etc.

[0127] In some embodiments, obtaining data, information, etc. may comply with the laws and regulations of the country where the data is obtained.

[0128] In some embodiments, data, information, etc. may be obtained with the user's consent.

[0129] Figure 1 is a schematic diagram of the architecture of a communication system according to an embodiment of the present disclosure. The communication system may include, but is not limited to, a first device and a second device. The number and configuration of devices shown in Figure 1 are for example purposes only and do not limit the present disclosure. In actual applications, two or more first devices and two or more second devices may be included. The communication system 100 shown in Figure 1 includes, for example, a first device 101 and a second device 102.

[0130] In some embodiments, the first device 101 may be one or more of the ambient Internet of Things devices in the ambient Internet of Things scenario. The ambient Internet of Things (Ambient Internet of Things, also called Ambient IOT or A-IOT) device does not need to generate energy by itself, but can collect energy, such as collecting energy based on the surrounding environment or signals sent by surrounding devices, and can communicate based on the collected energy. The device also does not need to be configured with a battery or replace the battery. In other words, the ambient Internet of Things device needs to collect radio waves sent by the surrounding environment or surrounding devices to obtain energy before it can drive itself to work. The ambient Internet of Things device has the characteristics of low memory, low processing power, low power, small data transmission, and massive deployment. The ambient Internet of Things device can be maintenance-free and have a long service life. For example, the A-IOT device can be a tag, such as a logistics tag, or it can also be an RFID electronic tag.

[0131] In some embodiments, the types of environmental Internet of Things devices can be divided into a first type, a second type, and a third type. Among them, the first type of environmental Internet of Things devices have energy storage and signal generation functions, and the uplink transmission is based on internally generated signal transmission, that is, the first type of environmental Internet of Things devices can actively send signals to the second device 102 based on internally generated signals (such as the first message in the present disclosure). The second type of environmental Internet of Things devices have energy storage and no signal generation and amplification functions, and the uplink transmission relies on backscatter transmission, that is, the second type of environmental Internet of Things devices need to use the backscatter working mode to send signals to the second device 102. The third type of environmental Internet of Things devices have energy storage and signal amplification functions, and the uplink transmission relies on backscatter transmission, that is, the third type of environmental Internet of Things devices need to use the backscatter working mode to send signals to the second device 102.

[0132] In some embodiments, the second device 102 may be another device that communicates with the first device 101. The second device 102 may be, for example, a network device in an environmental Internet of Things scenario, or an intermediate node in an environmental Internet of Things scenario. In some embodiments, the second device 102 is an intermediate node, and the second device 102 may be, for example, a relay in an environmental Internet of Things scenario, or an IAB (Integrated Access and Backhaul), or a terminal, or a repeater, etc. In some embodiments, the terminal in this document may be an entity on the user side for receiving or transmitting signals, such as a mobile phone. It may also be referred to as a terminal, user equipment (UE), mobile station (MS), mobile terminal (MT), etc. The terminal may be at least one of a car with communication capabilities, a smart car, a mobile phone, a wearable device, a tablet computer, a computer with wireless transceiver capabilities, a virtual reality (VR) terminal, an augmented reality (AR) terminal, a wireless terminal in industrial control, a wireless terminal in self-driving, a wireless terminal in remote medical surgery, a wireless terminal in a smart grid, a wireless terminal in transportation safety, a wireless terminal in a smart city, a wireless terminal in a smart home, etc. The embodiments of the present disclosure do not limit the specific technology and specific device form adopted by the terminal.

[0133] In some embodiments, the network device may be an access network device. 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, but is not limited to, at least one of an evolved NodeB (eNB), a next generation evolved NodeB (ng-eNB), a next generation NodeB (gNB), a NodeB (NB), a home nodeB (HNB), a home evolved nodeB (HeNB), a wireless backhaul device, a radio network controller (RNC), a base station controller (BSC), a base transceiver station (BTS), a base band unit (BBU), a mobile switching center, a base station in a 6G communication system, an open RAN, a cloud RAN, a base station in other communication systems, and an access node in a Wi-Fi system.

[0134] In some embodiments, the technical solution of the present disclosure can be applied to the Open RAN architecture. In this case, the interfaces between or within the access network devices involved in the embodiments of the present disclosure can be transformed into internal interfaces of the Open RAN, and the processes and information interactions between these internal interfaces can be implemented through software or programs.

[0135] In some embodiments, the access network device can be composed of a centralized unit (CU) and a distributed unit (DU), where the CU can also be called a control unit. The CU-DU structure can be used to split the protocol layer of the access network device, with the functions of some protocol layers centrally controlled by the CU, and the functions of the remaining part or all of the protocol layers distributed in the DU, which is centrally controlled by the CU, but is not limited to this.

[0136] It can be understood that the communication system described in the embodiment of the present disclosure is for the purpose of more clearly illustrating the technical solution of the embodiment of the present disclosure, and does not constitute a limitation on the technical solution proposed in the embodiment of the present disclosure. Ordinary technicians in this field can know that with the evolution of the system architecture and the emergence of new business scenarios, the technical solution proposed in the embodiment of the present disclosure is also applicable to similar technical problems.

[0137] The following embodiments of the present disclosure may be applied to the communication system 100 shown in FIG1 , or a portion thereof, but are not limited thereto. The entities shown in FIG1 are illustrative only. The communication system may include all or part of the entities shown in FIG1 , or may include other entities outside of FIG1 . The number and form of the entities are arbitrary, and the entities may be physical or virtual. The connection relationships between the entities are illustrative only. The entities may be connected or disconnected, and the connection may be in any manner, including direct or indirect, wired or wireless.

[0138] The embodiments of the present disclosure 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 (registered trademark)), CDMA2000, Ultra Mobile Broadband (UMB), IEEE 802.11 (Wi-Fi (registered trademark)), IEEE 802.16 (WiMAX (registered trademark)), IEEE 802.20, Ultra-WideBand (UWB), Bluetooth (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 utilizing other communication methods, and next-generation systems based on and extending these methods. Furthermore, multiple systems may be combined (for example, a combination of LTE or LTE-A with 5G).

[0139] It's important to note that in today's IoT networks, traditional IoT devices are often powered by conventional batteries with limited lifespans, negatively impacting the user experience. The astronomical growth of IoT networks, coupled with the proliferation of IoT devices, has pushed maintenance expenses, including labor and battery costs, to a whole new level. Billions of conventional batteries are discarded each year, with only a small fraction effectively recycled, negatively impacting the Earth's ecosystem. Maintaining IoT network operations and replacing batteries can be extremely challenging in some extreme environmental conditions. Battery-free IoT communications have been proposed, promising improved network performance and sustainability, while expanding their application scenarios. Furthermore, battery-free communications are more environmentally friendly and safer for children and the elderly. By eliminating traditional batteries, device size and cost can be significantly reduced, paving the way for a variety of new applications.

[0140] In the 5G era, various LPWA (Low Power Wide Area) technologies, such as MTC (Machine Type Communication), NB-IoT (Narrow Band Internet of Things), and RedCap (Reduced Capability), have been developed to meet the growing needs of vertical fields. These LPWA technologies achieve low cost, low power consumption, and large-scale connectivity, which can meet the requirements of many applications. However, there are still many use cases and applications that cannot be solved in the following situations. First, devices driven by traditional batteries are not applicable, such as in extreme environmental conditions (such as high voltage, extremely high / low temperature, and humid environments). Second, maintenance-free devices are required (for example, traditional batteries that do not need to be replaced in the device). Finally, ultra-low complexity, very small device size / form factor (such as mm thickness), and longer life cycle are required.

[0141] Ambient-powered IoT is a promising technology that can address the aforementioned unmet needs. An ambient-powered IoT device is an IoT device powered by energy harvesting, either without a battery or with limited energy storage capabilities (e.g., using capacitors), by harvesting radio waves, light, motion, heat, or any other suitable power source.

[0142] Energy harvested from the environment can power data transmission and wireless communications at sensor nodes. Current mainstream low-power IoT communication chips (such as BLE, LoRa, and NB-IoT) consume tens or even hundreds of milliwatts of power for both transmission and reception. However, ambient energy harvesting only captures microwatts of energy, making it inadequate for these types of nodes. Therefore, new wireless communication technologies are needed to reduce communication energy consumption to tens or even below ten microwatts. Backscatter communication is currently the mainstream approach. Backscatter communications is a key technology for building a green, energy-efficient, and flexibly deployable future IoT, and a crucial means of achieving the "Intelligent Connection of Everything."

[0143] Backscatter communication is a modulation and transmission technology designed with extremely low power consumption, which utilizes the principle of backscattering of radio frequency signals. For example, when a radio frequency signal reaches the surface of an object, a portion of it will be reflected. The sending node adjusts the matching between the receiving antenna and the impedance according to the information to be sent, thereby enhancing the reflection of the incident radio frequency signal and modulating the acquired sensing data onto the reflected signal to complete the transmission of the data. This process is similar to that of a reflector. Compared with other communication technologies, backscatter communication does not require a complex radio frequency structure, reduces the use of devices such as power amplifiers, high-precision crystal oscillators, duplexers, and high-precision filters, and does not require complex baseband processing. Therefore, it can simplify terminal design and significantly reduce the cost of terminal nodes.

[0144] Backscatter communication has been widely used in RFID (radio frequency identification) systems, with numerous large-scale commercial applications. Its operating principle is that a receiver (typically an RFID reader) transmits a radio frequency excitation signal, activating a passive node (typically an RFID tag). The tag then uses backscatter communication to modulate its information onto the radio frequency signal. The reader then receives the reflected signal from the passive tag and demodulates it, achieving information transmission.

[0145] Currently, RFID technology also has numerous drawbacks, such as limited coverage (the wireless signal experiences double-path fading during the round-trip communication process, resulting in high path loss and a short effective communication range), single-channel transmission, the need for strict tag alignment, and a lack of power control. RFID technology still has significant room for improvement in communication. Integration with 3GPP communication technologies is needed to improve the wireless communication performance of RFID technology in the passive IoT.

[0146] To conserve power and reduce device complexity in communication systems, new devices, such as the Ambient Internet of Things (A-IoT) devices, have been introduced. These A-IoT devices require energy from radio waves emitted by the surrounding environment or surrounding devices before they can operate. Therefore, before sourcing energy, A-IoT devices are typically powered off, meaning they are disconnected from the network. To address this, communication systems must support data communication methods with shorter transmission times, lower memory consumption, and more convenient terminal management to expedite data communication.

[0147] In some embodiments, the present disclosure implements a wireless communication design based on backscatter technology to communicate with an ambient energy device (also referred to as an ambient IoT device, i.e., the first device in this article). Optionally, the above-mentioned ambient IoT device (also called an Ambient IOT device, or an A-IOT device) can be applicable to a variety of different communication architectures in a communication system, wherein Figures 2A-2E are schematic diagrams of the architecture when an A-IoT device communicates with a network device and / or a terminal according to an embodiment of the present disclosure. Optionally, as shown in Figure 2A, data or signals can be directly received and sent between the A-IoT device (i.e., the Ambient IoT device in Figure 2A) and the network device (such as a base station (BS)).

[0148] Optionally, as shown in FIG2B , the A-IoT device and the network device (such as a base station (BS)) can indirectly receive and send data or signals through an intermediate node, where the intermediate node can be, for example, a relay, an integrated access backhaul (IAB) device, a terminal, or a repeater.

[0149] Optionally, as shown in FIG2C , uplink data can be directly transmitted between the A-IoT device and the network device (such as a base station (BS)), and downlink data can be indirectly transmitted between the A-IoT device and the network device (such as a base station (BS)) through an intermediate node, which can be, for example, a relay, an IAB device, a terminal, or a repeater.

[0150] Optionally, as shown in FIG2D , downlink data can be directly transmitted between the A-IoT device and the network device (such as a base station (BS)), and uplink data can be indirectly transmitted between the A-IoT device and the network device (such as a base station (BS)) through an intermediate node.

[0151] Optionally, as shown in FIG2E , data can be directly received and sent between the A-IoT device and the terminal (or user equipment (UE)), and the terminal can be responsible for collecting data from the A-IoT device and forwarding the collected data to the network device.

[0152] Based on the above, when an A-IoT device needs to send data to a terminal and / or network device, if there are currently no available resources, how to request resources to facilitate data transmission is an urgent problem that needs to be solved. In addition, considering that A-IOT devices have small memory, low processing power, no battery, small data transmission, and massive deployment, when requesting resources in A-IOT scenarios, it is usually necessary to comprehensively consider latency and signaling overhead. In addition, because A-IOT supports multiple device types, different types of A-IoT devices have different corresponding capabilities. Therefore, when an A-IoT device requests resources, the difference in device type is also a factor that needs to be considered.

[0153] Figure 3 is an interactive diagram of a communication method according to an embodiment of the present disclosure. As shown in Figure 3, the communication method according to the embodiment of the present disclosure can be applied to a communication system 100, and the method includes but is not limited to the following steps.

[0154] Step S3101: The first device 101 obtains access configuration.

[0155] In some embodiments, the access configuration may be obtained by the first device 101 through a SIB (System Information Block) sent by the second device 102. Exemplarily, the second device 102 sends an SIB, and correspondingly, the first device 101 receives the SIB sent (or broadcast) by the second device 102, and the SIB includes the access configuration. For example, taking the second device 102 as a base station, the access configuration may be obtained by the first device 101 through an SIB sent by the base station, for example, the base station sends an SIB, the first device 101 receives the SIB sent by the base station, the SIB sent by the base station includes the access configuration, and the first device 101 may obtain the access configuration from the SIB.

[0156] In some embodiments, the access configuration may be obtained by the first device 101 via dedicated signaling sent by the second device 102. Exemplarily, the second device 102 sends dedicated signaling, for example, the second device 102 sends the dedicated signaling to the first device 101, and correspondingly, the first device 101 receives the dedicated signaling sent by the second device 102, the dedicated signaling including the access configuration. Exemplarily, the dedicated signaling may be dedicated RRC (Radio Resource Control) signaling, or the dedicated signaling may be other signaling (such as DCI signaling), which is not limited in this disclosure and will not be described in detail.

[0157] In some embodiments, the access configuration may be obtained by the first device 101 via a third signal sent by the second device 102. Exemplarily, the third signal may be an excitation signal (continuous wave) sent by the second device 102. Exemplarily, the second device 102 may send a third signal (e.g., an excitation signal) that carries the access configuration. Accordingly, the first device 101 may receive the third signal and obtain the access configuration from the third signal. Exemplarily, the first device 101 may also store the energy of the third signal to facilitate the use of the stored energy to send signals and / or data. In some embodiments, the access configuration may be preconfigured.

[0158] In some embodiments, the second device 102 is a network device in an environmental Internet of Things scenario, and data or signals can be directly received and sent between the first device 101 and the network device. Then the above-mentioned access configuration can be sent by the network device to the first device 101. For example, the network device sends the access configuration to the first device 101, and the first device 101 can obtain the access configuration sent by the network device.

[0159] In some embodiments, the second device 102 is an intermediate node in an environmental Internet of Things scenario, and the first device 101 and the network device indirectly transmit downlink data through the intermediate node. The above-mentioned access configuration can be sent by the network device to the first device 101 via the second device 102. For example, the network device sends the access configuration to the second device 102, and the first device 101 obtains the access configuration from the second device 102.

[0160] In some embodiments, the above-described access configuration can be used by the first device 101 to request resources and / or channels. For example, the access configuration can be used by the first device 101 to send a first message to request resources and / or channels, so that the second device 102 that receives the first message can allocate resources and / or channels to the first device 101, so that the first device 101 can use the resources and / or channels to send data and / or identification. In some embodiments, the terms "resources" and "channels" can be used interchangeably.

[0161] In some embodiments, the access configuration may include, but is not limited to, at least one of the following: initial transmit power or a parameter used to calculate the initial transmit power, a power ramp-up step size, a timer configuration, and a second resource. Exemplarily, the initial transmit power may refer to the transmit power used by the first device 101 when it first transmits a first message. The first message may be used by the first device 101 to request resources and / or channels. The power ramp-up step size is used to determine the transmit power of the first message to be retransmitted. The timer may be used to indicate the duration of monitoring for a second message sent by the second device 102. The second resource may refer to the resource used by the first device 101 when transmitting the first message. In some embodiments, the second resource may include, but is not limited to, time domain and / or frequency domain resources, and / or code domain resources. Exemplarily, the second resource may be interpreted as a set of physical layer air interface resources, such as a set of time domain and / or frequency domain resources, a set of code domain resources, or a set of physical layer air interface resources. In some embodiments, the terms "second resource" and "second channel" may be used interchangeably. In some embodiments, the terms "monitor," "detect," "receive," and "discover" may be used interchangeably.

[0162] In this embodiment, the access configuration may include an initial transmit power or a parameter for calculating the initial transmit power. In this embodiment, the access configuration may include a power ramp-up step size. In this embodiment, the access configuration may include a timer configuration. In this embodiment, the access configuration may include a second resource. It should be noted that the above embodiments are not exhaustive and are merely illustrative of some embodiments. The above embodiments may be implemented individually or in combination. The above embodiments are merely illustrative and do not constitute a specific limitation on the scope of protection of the embodiments of the present disclosure.

[0163] Step S3102 : The first device 101 selects a first preamble sequence from a corresponding preamble sequence group according to the device type of the first device 101 .

[0164] In embodiments of the present disclosure, first device 101 may select the first preamble sequence from a corresponding preamble sequence group based on device type. In some embodiments, the first preamble sequence may be used by first device 101 to send a first message. In some embodiments, the first preamble sequence may be used for synchronization.

[0165] In some embodiments, the first preamble sequence may also implicitly indicate the device type of the first device 101. Exemplarily, the device type of the first device 101 may not be indicated by indication information (i.e., an indication field or a bit indicator), but rather by the first preamble sequence selected by the first device 101 to implicitly indicate the device type of the first device 101. That is, the first device 101 may select the first preamble sequence in the corresponding preamble group according to the device type (i.e., the device type of the first device 101), so that the device type of the first device 101 may be indicated by the selected first preamble sequence. In other words, the first device 101 may select a preamble sequence in the corresponding preamble group according to the device type, and indicate the device type by the selected preamble sequence. For example, by sending the first preamble sequence to the second device 102, the second device 102 may determine the device type of the first device 101 through the first preamble sequence selected by the first device 101.

[0166] For example, the preamble sequence is divided into preamble sequence group A and preamble sequence group B, and the second type and / or third type of environmental IoT devices are associated with preamble sequence group A, and the first type of environmental IoT devices are associated with preamble sequence group B. That is, the second type and / or third type of environmental IoT devices select a preamble sequence from preamble sequence group A, and the first type of environmental IoT devices select a preamble sequence from preamble sequence group B. Exemplarily, the device type of the first device 101 is the first type, and the first device 101 can select a first preamble sequence from the corresponding preamble sequence group B based on the device type. In this way, the selected first preamble sequence can indicate that the device type of the first device 101 is the first type. Exemplarily, the device type of the first device 101 is the second type or the third type, and the first device 101 can select a first preamble sequence from the corresponding preamble sequence group A based on the device type. In this way, the selected first preamble sequence can indicate that the device type of the first device 101 is the second type or the third type.

[0167] For example, taking the example of preamble sequences being divided into preamble sequence group A and preamble sequence group B, and second-type and / or third-type environmental IoT devices being associated with preamble sequence group B, and first-type environmental IoT devices being associated with preamble sequence group A, that is, second-type and / or third-type environmental IoT devices select preamble sequences from preamble sequence group B, and first-type environmental IoT devices select preamble sequences from preamble sequence group A. Exemplarily, if the device type of the first device 101 is the first type, the first device 101 can select a first preamble sequence from the corresponding preamble sequence group A based on the device type. In this way, the selected first preamble sequence can indicate that the device type of the first device 101 is the first type. Exemplarily, if the device type of the first device 101 is the second type or the third type, the first device 101 can select a first preamble sequence from the corresponding preamble sequence group B based on the device type. In this way, the selected first preamble sequence can indicate that the device type of the first device 101 is the second type or the third type.

[0168] It should be noted that the two examples of the association relationship between the leading sequence group and the device type of the environmental Internet of Things device given above are only for the convenience of understanding of those skilled in the art and cannot be used as specific limitations of the present disclosure. In other words, the association relationship between the leading sequence group and the device type of the environmental Internet of Things device can also have other association relationships, which are not limited to this in the present disclosure and will not be elaborated on.

[0169] Step S3103: The first device 101 sends a first message.

[0170] In some embodiments, the above-mentioned first message may be sent by the first device 101. Exemplarily, the above-mentioned first message may be sent by the first device 101 to the second device 102. Exemplarily, the first device 101 sends the first message to the second device 102. Accordingly, the second device 102 receives the first message sent by the first device 101. The first message may be used by the first device 101 to request resources and / or channels.

[0171] In some embodiments, the first device 101 is an ambient IoT device with energy storage and signal generation capabilities, and the first device 101 can directly send the first message to the second device 102. That is, since the first type of ambient IoT device has energy storage and signal generation capabilities, when the first device 101 is the first type of ambient IoT device, the first device 101 can generate the first message and directly send the first message to the second device 102. Correspondingly, the second device 102 receives the first message sent by the first device 101.

[0172] In some embodiments, the first device 101 is an ambient IoT device with energy storage but no signal generation and amplification functions, or the first device 101 is an ambient IoT device with energy storage and signal amplification functions. The first device 101 receives the first signal from the second device 102 and sends the first message to the second device 102 by backscattering the first signal. That is, if the first device 101 is a second-type or third-type ambient IoT device, the first device 101 needs to receive the first signal sent by the second device 102 and send the first message by backscattering the first signal. Exemplarily, the second device 102 sends the first signal to the first device 101, and the first device 101 receives the first signal sent by the second device 102 and sends the first message to the second device 102 by backscattering the first signal. Accordingly, the second device 101 receives the first message sent by the first device 101 by backscattering the first signal. The first signal can be an excitation signal (continuous wave).

[0173] In some embodiments, the first message may be sent by the first device 101 on a second resource and / or a second channel. Exemplarily, the first device 101 obtains the second resource and / or the second channel used to send the first message, and sends the first message on the second resource and / or the second channel. Exemplarily, the second resource and / or the second channel may be included in the access configuration, that is, the second resource and / or the second channel may be obtained through the SIB sent by the second device 102, or the second resource and / or the second channel may be obtained through dedicated signaling sent by the second device 102, or the second resource and / or the second channel may be obtained through a third signal (such as an excitation signal) sent by the second device 102. Alternatively, the second resource and / or the second channel may be obtained through pre-configuration.

[0174] In some embodiments, the second resource and / or second channel may include, but is not limited to, at least one of the following: a PRACH (Physical Random Access Channel) resource; a PUSCH (Physical Uplink Shared Channel) resource; a time domain location; a frequency domain location; a code domain location; or a channel. In this embodiment, the second resource and / or second channel may include a PRACH resource and / or a PUSCH resource. Alternatively, the second resource and / or second channel may include a time domain and / or frequency domain location, e.g., without distinguishing between transmission channels. Alternatively, the second resource may include a channel.

[0175] In some embodiments, the first message may include but is not limited to at least one of the following: a first preamble sequence, a device identifier of the first device 101, and a device type of the first device 101. Exemplarily, the first preamble sequence can be used for synchronization. The device identifier can be any of the following: a random number; a random sequence; a random string; an index of the device, etc.; or, the device identifier can also be a core network unique identifier, for example, a global unique temporary identifier (5G-GUTI) assigned by the core network to the first device 101. Exemplarily, the device identifier may include at least one of the following: a country code; a region code; a service code; an A-IOT device index.

[0176] In this embodiment, the first message may include a first preamble sequence and a device identifier of the first device 101. Optionally, the first message does not include the device type of the first device 101. When the second device 102 receives the first message, the second device 102 can determine the device type of the first device 101 through the first preamble sequence selected by the first device 101.

[0177] In this embodiment, the first message may include a first preamble sequence, a device identifier of the first device 101, and a device type of the first device 101, wherein the device type of the first device 101 is displayed and indicated by an indication field in the first message, that is, the device type of the first device 101 is not implicitly indicated by the first preamble sequence selected by the first device 101, but is displayed and indicated by the indication field in the first message. Exemplarily, the first message includes an indication field, which indicates the device type of the first device 101.

[0178] It should be noted that the above-mentioned embodiments of the content included in the first message are not exhaustive, but are only illustrative of some embodiments, and the above-mentioned embodiments can be implemented individually or in combination. The above-mentioned embodiments are only for illustration and are not intended to be a specific limitation on the scope of protection of the embodiments of the present disclosure.

[0179] Step S3104: The second device 102 sends a second message.

[0180] In some embodiments, the second message may be sent by the second device 102 to the first device 101. For example, the second device 102 sends the second message to the first device 101, and correspondingly, the first device 101 receives the second message sent by the second device 102.

[0181] In some embodiments, the second message may be sent by the second device 102 after receiving the first message sent by the first device 101. Exemplarily, the first device 101 sends a first message to the second device 102, where the first message carries at least one of a first preamble sequence, a device identifier of the first device 101, and a device type of the first device 101. The second device 102 receives the first message sent by the first device 101 and sends the second message to the first device 101. The second message may be used to indicate resources and / or channels to the first device 101.

[0182] In some embodiments, the second message may include, but is not limited to, at least one of the following: a second preamble sequence; a timing advance (TA); a first resource and / or a first channel; a device identifier; a dynamic identifier (also referred to as a temporary identifier ID and / or ID) assigned by the second device 102 to the first device 101. The second preamble sequence is used for synchronization adjustment of the first device 101; the timing advance is used for synchronization adjustment of the first device 101; the first resource and / or the first channel are used by the first device 101 to send data to be sent; the device identifier is used to indicate the device identifier of the first device 101 and can be used by the first device 101 to determine, based on the device identifier carried in the second message, that the second message is a response message from the second device 102 to the first device 101; the second device 102 assigns the dynamic identifier to the first device 101 so that the first device 101 carries the dynamic identifier when sending data to the second device 102, indicating that the data is sent by the first device 101. In some embodiments, the data to be sent can be the identifier (e.g., the device identifier) ​​and / or data of the first device 101.

[0183] In this embodiment, the second message may include a second preamble sequence, and the second preamble sequence may be the above-mentioned first preamble sequence, or may be a preamble sequence associated with the first preamble sequence. Exemplarily, the first device 101 sends a first message to the second device 102, and the first message carries the first preamble sequence. The second device 102 receives the first message sent by the first device 101 and sends the second message to the first device 101. The second preamble sequence carried by the second message may be the first preamble sequence sent by the first device 101 to 102, or the second preamble sequence carried by the second message may be a preamble sequence associated with the first preamble sequence. Exemplarily, the first device 101 may determine that the second message is a response message of the second device 102 to the first device 101 based on the preamble sequence carried in the second message.

[0184] In this embodiment, the second message may include a first resource and / or a first channel. Exemplarily, the first resource and / or the first channel may include, but is not limited to, at least one of the following: a PUCCH (Physical Uplink Control Channel) resource; a PUSCH resource; a time domain position (without distinguishing between transmission channels); a frequency domain position (without distinguishing between transmission channels); a code domain position (without distinguishing between transmission channels); or a channel.

[0185] In this embodiment, the second message may include a TA. In this embodiment, the second message may include a device identifier. In this embodiment, the second message may include a dynamic identifier. It should be noted that the above embodiments of the content included in the second message are not exhaustive and are only illustrative of some embodiments. The above embodiments can be implemented individually or in combination. The above embodiments are for illustration only and do not serve as specific limitations on the scope of protection of the embodiments of the present disclosure.

[0186] In some embodiments, the first resource and / or first channel may include, but is not limited to, time domain and / or frequency domain resources, and / or code domain resources. Exemplarily, the first resource may be interpreted as a set of physical layer air interface resources. For example, the first resource may be a set of time domain and / or frequency domain resources, or the first resource may be a set of code domain resources, or the first resource may also be a set of physical layer air interface resources. In some embodiments, the terms "first resource" and "first channel" may be used interchangeably.

[0187] It should be noted that in order to improve the success rate of the first device sending the first message, optionally, in some embodiments, after the first device 101 sends the first message, it starts a timer and determines whether to resend the first message during the timer running. The timer is used to monitor the duration of the second message sent by the second device 102. Exemplarily, if the first device 101 monitors the second message sent by the second device 102 during the timer running, the timer is stopped. Exemplarily, if the first device 101 receives the second message sent by the second device 102 during the timer running, and the first device 101 determines that the preamble sequence carried in the second message is the first preamble sequence, or that the preamble sequence carried in the second message is a preamble sequence associated with the first preamble sequence, it can be considered that the second message sent by the second device 102 is monitored, and the first device 101 stops the timer. Alternatively, exemplarily, if the first device 101 receives the second message sent by the second device 102 during the timer running, it can be considered that the second message sent by the second device 102 is monitored. Or, illustratively, the first device 101 receives a second message sent by the second device 102 during the operation of the timer, and the device identifier carried in the second message matches the device identifier of the first device 101, and it can be considered that the second message sent by the second device 102 is monitored.

[0188] Exemplarily, if the first device 101 does not monitor the second message sent by the second device 102 during the operation of the timer and the timer times out, the first device 101 resends the first message. Exemplarily, the above-mentioned "not monitoring the second message sent by the second device 102" may mean that the second message sent by the second device 102 is not received; or, "not monitoring the second message sent by the second device 102" may mean that the device identifier carried in the received second message does not match the device identifier of the first device 101; or, "not monitoring the second message sent by the second device 102" may mean that the preamble sequence carried in the received second message is not the first preamble sequence; or, "not monitoring the second message sent by the second device 102" may mean that the preamble sequence carried in the received second message has no association with the first preamble sequence. Alternatively, other methods may be used to determine whether the first device 101 monitors the second message sent by the second device 102. This is not limited in this disclosure and will not be elaborated on.

[0189] Optionally, in some embodiments, when the first device 101 retransmits the first message, the first device 101 determines a first transmit power, which is the transmit power used by the first device 101 when it most recently transmitted the first message before the timer was activated. Based on the first transmit power and the power ramp-up step size, the first device 101 determines a second transmit power, so that the first device 101 can retransmit the first message using the second transmit power. That is, the first device 101 can determine the second transmit power of the first message to be retransmitted based on the transmit power and power ramp-up step size of the previously transmitted first message, and the first device 101 can retransmit the first message using the second transmit power. In some embodiments, the first message is initially transmitted at an initial transmit power. It should be noted that the power ramp-up step size and / or initial transmit power may be included in the aforementioned access configuration. For optional implementations of the "access configuration," reference may be made to the optional implementations of step S3101 above and will not be further described here.

[0190] In one possible implementation, the first device 101 increases the power ramp-up step size on the first transmission power to determine the second transmission power to be used when resending the first message. For example, taking the first transmission power as A and the power ramp-up step size as a, the first device 101 may determine that the second transmission power for resending the first message is A+a. Exemplarily, if the first device 101 does not monitor the second message sent by the second device 102 during the operation of the timer, then when the timer expires, the first device 101 may resend the first message using the second transmission power "A+a", so that the second device 102 can determine whether to send the second message to the first device 101 based on the first message.

[0191] Step S3105 : The first device 101 determines the configuration information allocated by the second device 102 to the first device 101 based on the second message.

[0192] In some embodiments, the first device 101 may determine, based on the content carried in the second message, that the second message from the second device 102 is a response message from the second device 102 to the first device 101, and the first device may determine, from the second message, the configuration information (such as resources, etc.) allocated by the second device 102 to the first device 101. Exemplarily, if the first device 101 determines that the device identifier carried in the second message matches the device identifier of the first device 101, the second message may be considered to be a response message from the second device 102 to the first device 101, and the first device 101 may determine, from the second message, the configuration information allocated by the second device 102 to the first device 101. Exemplarily, if the first device 101 determines that the preamble sequence carried in the second message is the first preamble sequence (i.e., the preamble sequence carried in the first message sent by the first device 101), the second message may be considered to be a response message from the second device 102 to the first device 101, and the first device 101 may determine, from the second message, the configuration information allocated by the second device 102 to the first device 101. Exemplarily, the first device 101 determines that the leading sequence carried in the second message is associated with the first leading sequence (i.e., the leading sequence carried in the first message sent by the first device 101). The second message can be considered to be a response message of the second device 102 to the first device 101. The first device 101 can then determine the configuration information allocated by the second device 102 to the first device 101 from the second message.

[0193] In some embodiments, the configuration information may include but is not limited to at least one of the following: a first resource; a dynamic identifier. In some embodiments, the configuration information may also include but is not limited to a second preamble sequence and / or a timing advance.

[0194] In some embodiments, the second device 102 is a network device in an ambient IoT scenario. The first resource may be directly allocated to the first device 101 by the network device; the dynamic identifier may be directly allocated to the first device 101 by the network device. The network device may provide the first resource and / or dynamic identifier to the first device 101 via a second message, i.e., the first device 101 obtains the first resource and / or dynamic identifier via the second message sent by the network device. Optionally, the second preamble sequence and / or timing advance may also be directly allocated to the first device 101 by the network device, i.e., the first device 101 obtains the second preamble sequence and / or timing advance via the second message sent by the network device.

[0195] In some embodiments, the second device 102 is an intermediate node in an environmental Internet of Things scenario. The dynamic identifier may be a dynamic identifier assigned by the network device to the first device 101. The second device 102 obtains the dynamic identifier assigned by the network device to the first device 101. The second device 102 may provide the dynamic identifier to the first device 101 via a second message. Accordingly, the first device 101 receives a second message sent by the second device 102, the second message including the dynamic identifier. The second preamble sequence and / or timing advance value may be obtained by the first device 101 from the network device via the second device 102. Exemplarily, the network device sends a message to the second device 102, the message carrying the second preamble sequence and / or timing advance value. The second device 102 sends the second preamble sequence and / or timing advance value to the first device 101 via a second message. Accordingly, the first device 101 receives the second message sent by the second device 102, the second message carrying the second preamble sequence and / or timing advance value.

[0196] In some embodiments, the second device 102 is an intermediate node in an ambient IoT scenario, and the aforementioned first resource may be allocated by the second device 102 to the first device 101. Exemplarily, the network device may allocate a block of resources to the second device 102 (e.g., a resource used by the first device 101 to send data to be sent). The second device 102 may select a resource from the block of resources as the first resource and provide the first resource to the first device 101 via a second message. The first device 101 then receives the second message sent by the second device 102, which includes the resource (i.e., the first resource) selected by the second device 102 for the first device 101 from the block of resources configured by the network device. Alternatively, the aforementioned first resource may be allocated by the network device to the first device 101. Exemplarily, the network device allocates the first resource to the first device 101 and sends the first resource to the second device 102, which is an intermediate node. The second device 102 provides the first resource to the first device 101 via a second message. The first device 101 then receives the second message sent by the second device 102, which includes the first resource allocated by the network device to the first device 101.

[0197] Step S3106: The first device 101 sends the data to be sent on the first resource and / or the first channel.

[0198] In some embodiments, the data to be sent may be sent by the first device 101 on the first resource and / or the first channel. Exemplarily, the first device 101 determines that there is data to be sent, and sends the data to be sent on the first resource and / or the first channel. Accordingly, the second device 102 receives the data to be sent sent by the first device 101 on the first resource and / or the first channel.

[0199] In some embodiments, the first resource and / or the first channel are obtained by the first device 101 from a second message sent by the second device 102. That is, the second message sent by the second device 102 carries the first resource and / or the first channel, and the first device 101 receives the second message and determines the first resource and / or the first channel from the second message.

[0200] In some embodiments, the first device 101 determines that there is data to be sent, and the first device 101 may send the data to be sent on the first resource and / or the first channel. In some embodiments, the data to be sent sent by the first device 101 may carry the device identifier and / or dynamic identifier of the first device 101. Exemplarily, the data to be sent sent by the first device 101 may carry the device identifier of the first device 101. Exemplarily, the data to be sent sent by the first device 101 may carry the dynamic identifier. The dynamic identifier may be obtained by the first device 101 from a second message sent by the second device 102. That is, the second message sent by the second device 102 carries the dynamic identifier. The first device 101 receives the second message, determines the temporary ID and / or ID from the second message, and sends the data to be sent on the first resource and / or the first channel. The data to be sent may carry the dynamic identifier, so that the device (the second device 102) receiving the data to be sent can determine that the data to be sent is data sent by the first device 101 based on the dynamic identifier.

[0201] In some embodiments, the first device 101 is an ambient IoT device with energy storage and signal generation capabilities, and the first device 101 can directly send the data to be sent on the first resource and / or the first channel. In other words, since the first type of ambient IoT device has energy storage and signal generation capabilities, the first device 101 can directly send the data to be sent on the first resource if it is the first type of ambient IoT device.

[0202] In some embodiments, the first device 101 is an environmental Internet of Things device with energy storage but no signal generation and amplification functions, or the first device 101 is an environmental Internet of Things device with energy storage and signal amplification functions, then the first device 101 performs backscatter transmission based on the second message or the second signal sent by the second device 102 to send the data to be sent on the first resource and / or the first channel. Exemplarily, the first device 101 can use the second message sent by the second device 102 to perform backscatter transmission to send the data to be sent on the first resource and / or the first channel. The first device 101 can use the second message or second signal (such as an excitation signal) sent by the second device 102 to perform backscatter transmission to send the data to be sent on the first resource and / or the first channel.

[0203] In some embodiments, the names of information, etc. are not limited to the names described in the embodiments, and terms such as "information", "message", "signal", "signaling", "report", "configuration", "indication", "instruction", "command", "channel", "parameter", "domain", "field", "symbol", "symbol", "codeword", "codebook", "codeword", "codepoint", "bit", "data", "program", and "chip" can be used interchangeably.

[0204] In some embodiments, terms such as "uplink", "uplink", "physical uplink" can be interchangeable with each other, and terms such as "downlink", "downlink", "physical downlink" can be interchangeable with each other, and terms such as "side", "sidelink", "side communication", "sidelink communication", "direct connection", "direct link", "direct communication", "direct link communication" can be interchangeable with each other.

[0205] In some embodiments, "obtain", "get", "get", "receive", "transmit", "bidirectional transmission", "send and / or receive" can be interchangeable, and can be interpreted as receiving from other entities, obtaining from protocols, obtaining from higher layers, obtaining by self-processing, autonomous implementation, etc.

[0206] In some embodiments, terms such as "send", "transmit", "report", "download", "transmit", "bidirectional transmission", "send and / or receive" can be used interchangeably.

[0207] In some embodiments, terms such as "certain", "preset", "preset", "setting", "indicated", "a certain", "any", and "first" can be interchangeable. "Specific A", "preset A", "preset A", "setting A", "indicated A", "a certain A", "any A", and "first A" can be interpreted as A pre-specified in a protocol, etc., or as A obtained through setting, configuration, or indication, etc., or as specific A, a certain A, any A, or first A, etc., but not limited to this.

[0208] In some embodiments, the determination or judgment can be performed by a value represented by 1 bit (0 or 1), or by a true or false value (Boolean value) represented by true or false, or by comparison of numerical values ​​(for example, comparison with a predetermined value), but is not limited thereto.

[0209] The method involved in the embodiment of the present disclosure may include at least one of steps S3101 to S3106. For example, step S3103+step S3104+step S3105 can be implemented as an independent embodiment, step S3102+step S3103+step S3104+step S3105 can be implemented as an independent embodiment, step S3101+step S3103+step S3104+step S3105 can be implemented as an independent embodiment, step S3101+step S3102+step S3103+step S3104+step S3105 can be implemented as an independent embodiment, step S3103+step S3104+step S3105 can be implemented as an independent embodiment. Step S3105+Step S3106 can be implemented as an independent embodiment, step S3102+Step S3103+Step S3104+Step S3105+Step S3106 can be implemented as an independent embodiment, step S3101+Step S3103+Step S3104+Step S3105+Step S3106 can be implemented as an independent embodiment, step S3101+Step S3102+Step S3103+Step S3104+Step S3105+Step S3106 can be implemented as an independent embodiment, but are not limited to this.

[0210] In some embodiments, step S3101 and step S3102 may be executed in an interchanged order or simultaneously.

[0211] In some embodiments, step S3101, step S3102, and step S3106 are optional, and one or more of these steps may be omitted or replaced in different embodiments.

[0212] In some embodiments, step S3101 and step S3106 are optional, and one or more of these steps may be omitted or replaced in different embodiments.

[0213] In some embodiments, step S3102 and step S3106 are optional, and one or more of these steps may be omitted or replaced in different embodiments.

[0214] In some embodiments, step S3106 is optional, and one or more of these steps may be omitted or replaced in different embodiments.

[0215] In some embodiments, step S3101 and step S3102 are optional, and one or more of these steps may be omitted or replaced in different embodiments.

[0216] In some embodiments, step S3101 is optional, and one or more of these steps may be omitted or replaced in different embodiments.

[0217] In some embodiments, step S3102 is optional, and one or more of these steps may be omitted or replaced in different embodiments.

[0218] In some embodiments, reference may be made to other optional implementations described before or after the description corresponding to FIG. 3 .

[0219] FIG4A is a flow chart showing a communication method according to an embodiment of the present disclosure. As shown in FIG4A , the embodiment of the present disclosure relates to a communication method, which can be executed by the first device 101 and may include but is not limited to the following steps.

[0220] Step S4101: Obtain access configuration.

[0221] The optional implementation of step S4101 can refer to the optional implementation of step S3101 in Figure 3 and other related parts in the embodiment involved in Figure 3, which will not be repeated here.

[0222] Step S4102 : Select a first preamble sequence from a corresponding preamble sequence group according to the device type of the first device 101 .

[0223] The optional implementation of step S4102 can refer to the optional implementation of step S3102 in Figure 3 and other related parts in the embodiment involved in Figure 3, which will not be repeated here.

[0224] Step S4103: Send a first message to the second device 102.

[0225] The optional implementation of step S4103 can refer to the optional implementation of step S3103 in Figure 3 and other related parts in the embodiment involved in Figure 3, which will not be repeated here.

[0226] Step S4104: Receive the second message sent by the second device 102.

[0227] In some embodiments, the second message may be sent by the second device 102 to the first device 101. For example, the second device 102 sends the second message to the first device 101, and correspondingly, the first device 101 receives the second message sent by the second device 102.

[0228] The optional implementation of step S4104 can refer to the optional implementation of step S3104 in Figure 3 and other related parts in the embodiment involved in Figure 3, which will not be repeated here.

[0229] Step S4105: Determine the configuration information allocated by the second device 102 to the first device 101 based on the second message.

[0230] The optional implementation of step S4105 can refer to the optional implementation of step S3105 in Figure 3 and other related parts in the embodiment involved in Figure 3, which will not be repeated here.

[0231] Step S4106: Send the data to be sent on the first resource.

[0232] In some embodiments, the data to be sent may be sent by the first device 101 on the first resource to the second device 102. For example, the first device 101 sends the data to be sent to the second device 102 on the first resource, and correspondingly, the second device 102 receives the data to be sent sent by the first device 101 on the first resource.

[0233] The optional implementation of step S4106 can refer to the optional implementation of step S3106 in Figure 3 and other related parts in the embodiment involved in Figure 3, which will not be repeated here.

[0234] The method involved in the embodiment of the present disclosure may include at least one of steps S4101 to S4106. For example, step S4103+step S4104+step S4105 can be implemented as an independent embodiment, step S4102+step S4103+step S4104+step S4105 can be implemented as an independent embodiment, step S4101+step S4103+step S4104+step S4105 can be implemented as an independent embodiment, step S4101+step S4102+step S4103+step S4104+step S4105 can be implemented as an independent embodiment, step S4103+step S4104+step S4105 can be implemented as an independent embodiment. Step S4105 + step S4106 can be implemented as an independent embodiment, step S4102 + step S4103 + step S4104 + step S4105 + step S4106 can be implemented as an independent embodiment, step S4101 + step S4103 + step S4104 + step S4105 + step S4106 can be implemented as an independent embodiment, step S4101 + step S4102 + step S4103 + step S4104 + step S4105 + step S4106 can be implemented as an independent embodiment, but is not limited to this.

[0235] In some embodiments, step S4101 and step S4102 may be executed in an interchanged order or simultaneously.

[0236] In some embodiments, step S4101, step S4102, and step S4106 are optional, and one or more of these steps may be omitted or replaced in different embodiments.

[0237] In some embodiments, step S4101 and step S4106 are optional, and one or more of these steps may be omitted or replaced in different embodiments.

[0238] In some embodiments, step S4102 and step S4106 are optional, and one or more of these steps may be omitted or replaced in different embodiments.

[0239] In some embodiments, step S4106 is optional, and one or more of these steps may be omitted or replaced in different embodiments.

[0240] In some embodiments, step S4101 and step S4102 are optional, and one or more of these steps may be omitted or replaced in different embodiments.

[0241] In some embodiments, step S4101 is optional, and one or more of these steps may be omitted or replaced in different embodiments.

[0242] In some embodiments, step S4102 is optional, and one or more of these steps may be omitted or replaced in different embodiments.

[0243] FIG4B is a flow chart showing a communication method according to an embodiment of the present disclosure. As shown in FIG4B , the embodiment of the present disclosure relates to a communication method, which can be executed by the first device 101 and may include but is not limited to the following steps.

[0244] Step S4201: Send a first message to the second device 102.

[0245] In some embodiments, the first message includes at least one of the following: a first preamble sequence, a device identifier of the first device, and a device type of the first device. The first device 101 is a network device or an intermediate node in an ambient Internet of Things scenario.

[0246] In some embodiments, the first device 101 is an environmental IoT device having energy storage and signal generation functions, and the first device 101 can directly send the first message to the second device 102.

[0247] In some embodiments, the first device 101 is an environmental Internet of Things device with energy storage but no signal generation and amplification functions, or the first device 101 is an environmental Internet of Things device with energy storage and signal amplification functions, then the first device 101 receives the first signal sent by the second device 102, and uses the first signal for backscatter transmission to send a first message to the second device 102.

[0248] In some embodiments, the first device 101 selects a first preamble sequence from a corresponding preamble sequence group according to a device type of the first device 101 , where the first preamble sequence implicitly indicates the device type of the first device 101 .

[0249] In some embodiments, the first message includes an indication field, where the indication field indicates the device type of the first device 101 .

[0250] Step S4202: Receive a second message sent by the second device 102.

[0251] In some embodiments, the second message includes at least one of the following: a second preamble sequence, the second preamble sequence is used for synchronization adjustment of the first device 101; a timing advance, the timing advance is used for synchronization adjustment of the first device 101; a first resource, the first resource is used for the first device 101 to send data to be sent; a device identifier of the first device 101; and a dynamic identifier assigned to the first device 101 by the second device 102.

[0252] Step S4203: Determine the configuration information allocated by the second device 102 to the first device 101 based on the second message.

[0253] In some embodiments, it is determined that the device identifier carried in the second message matches the device identifier of the first device 101; and configuration information allocated by the second device 102 to the first device 101 is determined from the second message.

[0254] In some embodiments, the method may further include: sending the data to be sent on the first resource.

[0255] In some embodiments, the first device 101 is an environmental Internet of Things device with energy storage and signal generation functions, and the first device 101 can directly send the data to be sent on the first resource.

[0256] In some embodiments, the first device 101 is an environmental Internet of Things device with energy storage but no signal generation and amplification functions, or the first device 101 is an environmental Internet of Things device with energy storage and signal amplification functions, and the first device 101 sends the data to be sent on the first resource through backscatter transmission of the second message or the second signal sent by the second device 102.

[0257] In some embodiments, the data to be sent carries the device identifier and / or dynamic identifier of the first device 101 .

[0258] In some embodiments, the first resource includes at least one of the following: PUCCH resource; PUSCH resource; time domain position; frequency domain position; channel.

[0259] In some embodiments, the method further includes: starting a timer, the timer being used to monitor the duration of the second message; and determining whether to resend the first message during the timer running.

[0260] In some embodiments, an optional implementation of determining whether to resend the first message during the timer operation includes: stopping the timer when a second message is monitored; or resending the first message when the second message is not monitored and the timer times out.

[0261] In some embodiments, an optional implementation of monitoring the second message includes: receiving the second message. In some embodiments, an optional implementation of monitoring the second message includes: a device identifier carried in the received second message matches a device identifier of the first device.

[0262] In some embodiments, the first device 101 determines a first transmit power, where the first transmit power is the transmit power used by the first device when it last sent the first message before the timer was started; determines a second transmit power based on the first transmit power and the power ramp-up step size; and if the first device 101 does not detect the second message and the timer expires, resends the first message using the second transmit power.

[0263] In some embodiments, an optional implementation of determining the second transmit power based on the first transmit power and the power ramp-up step size includes: adding the power ramp-up step size to the first transmit power to determine the second transmit power.

[0264] In some embodiments, the first message is first transmitted at an initial transmission power.

[0265] In some embodiments, the first device 101 obtains a second resource used to send the first message; the second resource is used by the first device to send the first message.

[0266] In some embodiments, the method further includes: acquiring access configuration; wherein the access configuration includes at least one of the following: initial transmit power, power ramp-up step, timer configuration, and second resource.

[0267] In some embodiments, optional implementation methods for obtaining the access configuration include: receiving a system information block SIB sent by the second device 102, the SIB including the access configuration; or, receiving dedicated signaling sent by the second device 102, the dedicated signaling including the access configuration; or, receiving a third signal sent by the second device 102, the third signal including the access configuration.

[0268] In some embodiments, the first signal, the second signal, and the third signal are excitation signals sent by the second device 102 .

[0269] In some embodiments, the second resource includes at least one of the following: a PRACH resource; a PUSCH resource; a time domain location; a frequency domain location; a channel.

[0270] For optional implementations of the method on the first device side involved in the embodiments of the present disclosure, please refer to the description of the steps related to the first device in Figure 3 above, which will not be repeated here.

[0271] FIG5A is a flow chart showing a communication method according to an embodiment of the present disclosure. As shown in FIG5A , the embodiment of the present disclosure relates to a communication method, which can be executed by the second device 102 and may include but is not limited to the following steps.

[0272] Step S5101: Send access configuration.

[0273] In some embodiments, the access configuration may be an access configuration configured by the second device 102 for the first device 101. Exemplarily, the access configuration may be included in a SIB, and the second device 102 broadcasts the SIB. Accordingly, the first device 101 receives the SIB, so that the first device 101 obtains the access configuration from the SIB.

[0274] Exemplarily, the access configuration may be included in dedicated signaling. The second device 102 sends the dedicated signaling, and correspondingly, the first device 101 receives the dedicated signaling, so that the first device 101 obtains the access configuration from the dedicated signaling.

[0275] Exemplarily, the access configuration may be included in a third signal. The second device 102 sends the third signal, and correspondingly, the first device 101 receives the third signal, so that the first device 101 obtains the access configuration from the third signal.

[0276] The optional implementation of step S5101 can refer to the optional implementation of step S3101 in Figure 3 and other related parts in the embodiment involved in Figure 3, which will not be repeated here.

[0277] Step S5102: Receive a first message sent by the first device 101.

[0278] The optional implementation of step S5102 can refer to the optional implementation of step S3103 in Figure 3 and other related parts in the embodiment involved in Figure 3, which will not be repeated here.

[0279] Step S5103: Determine the device type of the first device 101 according to the first preamble sequence carried in the first message.

[0280] In some embodiments, the first preamble sequence is a preamble sequence selected by the first device from a corresponding preamble sequence group based on the device type of the first device 101. The second device 102 receives the first message sent by the first device 101 and can determine the device type of the first device 101 based on the first preamble sequence carried in the first message.

[0281] In some embodiments, step S5103 is optional, and one or more of these steps may be omitted or replaced in different embodiments. For example, if the first message sent by the first device 101 carries an indication field, and the indication field indicates the device type of the first device 101, the second device 102 will not execute step S5103, that is, the second device 102 determines the device type of the first device 101 based on the indication field carried in the first message, and does not determine the device type of the first device 101 based on the first leading sequence carried in the first message. For another example, if the first message sent by the first device 101 does not carry the indication field, the second device 102 executes step S5103, that is, the second device 102 determines the device type of the first device 101 based on the first leading sequence carried in the first message.

[0282] Step S5104: Send a second message to the first device 101.

[0283] The optional implementation of step S5104 can refer to the optional implementation of step S3104 in Figure 3 and other related parts in the embodiment involved in Figure 3, which will not be repeated here.

[0284] Step S5105: Receive the data to be sent sent by the first device 101 on the first resource.

[0285] The optional implementation of step S5105 can refer to the optional implementation of step S3106 in Figure 3 and other related parts in the embodiment involved in Figure 3, which will not be repeated here.

[0286] The method involved in the embodiment of the present disclosure may include at least one of steps S5101 to S5105. For example, step S5102 + step S5104 can be implemented as an independent embodiment, step S5102 + step S5103 + step S5104 can be implemented as an independent embodiment, step S5101 + step S5102 + step S5104 can be implemented as an independent embodiment, step S5101 + step S5102 + step S5103 + step S5104 can be implemented as an independent embodiment, step S5102 + step S5104 + step S5105 can be implemented as an independent embodiment. Step S5105 can be implemented as an independent embodiment, step S5102+step S5103+step S5104+step S5105 can be implemented as an independent embodiment, step S5101+step S5102+step S5104+step S5105 can be implemented as an independent embodiment, step S5101+step S5102+step S5103+step S5104+step S5105 can be implemented as an independent embodiment, but is not limited to this.

[0287] In some embodiments, step S5101, step S5103, and step S5105 are optional, and one or more of these steps may be omitted or replaced in different embodiments.

[0288] In some embodiments, step S5101 and step S5105 are optional, and one or more of these steps may be omitted or replaced in different embodiments.

[0289] In some embodiments, step S5103 and step S5105 are optional, and one or more of these steps may be omitted or replaced in different embodiments.

[0290] In some embodiments, step S5105 is optional, and one or more of these steps may be omitted or replaced in different embodiments.

[0291] In some embodiments, step S5101 and step S5103 are optional, and one or more of these steps may be omitted or replaced in different embodiments.

[0292] In some embodiments, step S5101 is optional, and one or more of these steps may be omitted or replaced in different embodiments.

[0293] In some embodiments, step S5103 is optional, and one or more of these steps may be omitted or replaced in different embodiments.

[0294] FIG5B is a flow chart of a communication method according to an embodiment of the present disclosure. As shown in FIG5B , the embodiment of the present disclosure relates to a communication method, which can be executed by the second device 102 and may include but is not limited to the following steps.

[0295] Step S5201: Receive a first message sent by the first device 101.

[0296] In some embodiments, the first message includes at least one of the following: a first preamble sequence, a device identifier of the first device 101, and a device type of the first device 101. The first device 101 is an ambient IoT device.

[0297] In some embodiments, an optional implementation method of receiving the first message sent by the first device 101 includes: receiving the first message sent by the first device 101, the device type of the first device 101 is the first type; wherein the first type refers to an environmental Internet of Things device with energy storage and signal generation functions.

[0298] In some embodiments, an optional implementation method of receiving a first message sent by the first device 101 includes: sending a first signal to the first device 101, so that the first device 101 performs backscatter transmission of the first message sent to the second device 102 through the first signal; wherein the first device 101 is an environmental Internet of Things device with energy storage and no signal generation and amplification functions, or the first device 101 is an environmental Internet of Things device with energy storage and signal amplification functions.

[0299] In some embodiments, the first preamble sequence is a preamble sequence selected by the first device 101 from the corresponding preamble sequence group according to the device type of the first device 101; in this embodiment, the method also includes: determining the device type of the first device 101 based on the first preamble sequence carried in the first message.

[0300] In some embodiments, the first message includes an indication field, where the indication field indicates the device type of the first device 101 .

[0301] Step S5202 : Send a second message to the first device 101 , where the second message is used by the first device 101 to determine the configuration information allocated by the second device 102 to the first device 101 .

[0302] In some embodiments, the second message includes at least one of the following: a second preamble sequence, the second preamble sequence is used for synchronization adjustment of the first device 101; a timing advance, the timing advance is used for synchronization adjustment of the first device 101; a first resource, the first resource is used for the first device 101 to send data to be sent; a device identifier of the first device 101; and a dynamic identifier assigned to the first device 101 by the second device 102.

[0303] In some embodiments, the method further includes: receiving data to be sent by the first device 101 on the first resource.

[0304] In some embodiments, the first resource includes at least one of the following: PUCCH resource; PUSCH resource; time domain position; frequency domain position; channel.

[0305] In some embodiments, the first device 101 is an environmental Internet of Things device with energy storage but no signal generation and amplification functions, or the first device 101 is an environmental Internet of Things device with energy storage and signal amplification functions, then the data to be sent by the first device 101 and received by the second device 102 is data sent by the first device 101 through backscatter transmission of the second message or the second signal sent by the second device 102.

[0306] In some embodiments, the data to be sent carries the device identifier and / or dynamic identifier of the first device 101 .

[0307] In some embodiments, the method further includes any one of the following: sending a system information block SIB, the SIB including the access configuration; sending dedicated signaling, the dedicated signaling including the access configuration; sending a third signal, the third signal including the access configuration.

[0308] In some embodiments, the first signal, the second signal, and the third signal are excitation signals sent by the second device 102 .

[0309] In some embodiments, the access configuration includes at least one of the following: a second resource, which is a resource used by the first device 101 to send the first message; the initial sending power of the first message; the power climbing step; the configuration of the timer, which is used to indicate the duration of monitoring the second message sent by the second device 102, and the timer is used by the first device 101 to determine whether the first message needs to be resent.

[0310] In some embodiments, the second resource includes at least one of the following: a PRACH resource; a PUSCH resource; a time domain location; a frequency domain location; a channel.

[0311] For optional implementations of the method on the second device side involved in the embodiments of the present disclosure, please refer to the description of the steps related to the second device in Figure 3 above, which will not be repeated here.

[0312] Figure 6 is an interactive diagram of a communication method according to an embodiment of the present disclosure. As shown in Figure 6, the method involved in the embodiment of the present disclosure can be applied to a communication system 100, and the method includes but is not limited to the following steps.

[0313] Step S6101: The first device 101 sends a first message to the second device 102.

[0314] In some embodiments, the first message includes at least one of the following: a first preamble sequence, a device identifier of the first device, and a device type of the first device. The first device is an ambient IoT device. The second device 102 is a network device or an intermediate node in an ambient IoT scenario.

[0315] The optional implementation of step S6101 can refer to the optional implementation of step S3103 in Figure 3 and other related parts in the embodiment involved in Figure 3, which will not be repeated here.

[0316] Step S6102: The second device 103 sends a second message to the first device 101.

[0317] The optional implementation of step S6102 can refer to the optional implementation of step S3104 in Figure 3 and other related parts in the embodiment involved in Figure 3, which will not be repeated here.

[0318] Step S6103: The first device 101 determines the configuration information allocated by the second device 102 to the first device 101 based on the second message.

[0319] The optional implementation of step S6103 can refer to the optional implementation of step S3105 in Figure 3 and other related parts in the embodiment involved in Figure 3, which will not be repeated here.

[0320] In some embodiments, the above method may include the method described in the above embodiments of the first device side, the second device side, etc., which will not be repeated here.

[0321] It should be noted that, considering that A-IOT devices have the characteristics of small memory, low processing power, no battery, and small data transmission, and that a large number of A-IOT devices are supported in the A-IOT scenario, the access process in the A-IOT scenario needs to comprehensively consider the latency and signaling overhead. In addition, since A-IOT supports three types of devices, the second and third types of A-IOT devices can only send signals based on backscattering, and the first type of A-IOT devices can independently generate and send signals. When designing the A-IOT device access process, the device type is also a factor that needs to be considered. The present disclosure proposes a random access method in an A-IOT scenario, which solves the problem of how to support the access process of a large number of A-IOT devices with small memory, low processing power, no battery, and small data transmission in the A-IOT scenario.

[0322] In some embodiments, in an A-IOT scenario, the A-IOT device sends a first message carrying a device identifier, a preamble (preamble sequence), and a device type.

[0323] Exemplarily, the first message is sent by the A-IOT device to the base station, and the first message carries the A-IOT device identifier and / or preamble and / or device type. Exemplarily, the resources for sending the first message are obtained through the access configuration broadcast by the SIB of the base station. Exemplarily, the resources for sending the first message are obtained through dedicated signaling sent by the base station. Exemplarily, the resources for sending the first message are obtained through the excitation signal (continuous wave) sent by the base station, which is not specifically limited in this disclosure. In one implementation, the resources for sending the first message include PRACH resources and / or PUSCH resources. In another implementation, the resources for sending the first message include time domain and frequency domain positions (without distinguishing between transmission channels).

[0324] For example, for the second and third types of A-IOT devices, it is necessary to receive the excitation signal sent by the base station and send the first message based on backscattering. For the first type of A-IOT device, the first message can be sent directly.

[0325] Exemplarily, the device identifier can be a random number / random sequence / random string or an identifier such as a device index, or a core network unique identifier. Exemplarily, the device identifier can include a country code and / or a region code and / or a service code and / or an IoT device index.

[0326] In some embodiments, the A-IOT device selects a preamble in a corresponding preamble group according to the device type, and the device type is indicated by the selected preamble.

[0327] Exemplarily, the preamble is divided into preamble sequence group A (group A) and preamble sequence group B (group B), and the second type and / or third type A-IOT device selects a preamble in group A, and the first type A-IOT device selects a preamble in group B. Exemplarily, the second type and / or third type A-IOT device selects a preamble in group B, and the first type A-IOT device selects a preamble in group A. Exemplarily, the second type A-IOT device selects a preamble in group A, and the third type A-IOT device selects a preamble in group B; Exemplarily, the second type A-IOT device selects a preamble in group B, and the third type A-IOT device selects a preamble in group A. The base station can determine the type of the A-IOT device through the preamble selected by the A-IOT device.

[0328] Exemplarily, the A-IOT device displays an indication of the device type in the first message, and exemplary, the indication is one of the first type, the second type, and the third type.

[0329] In some embodiments, the base station indicates the completion of the access process through a second message, and the second message includes at least one of the following: timing advance (also called timing advance), first resource (UL grant), device identification, temporary ID and / or ID.

[0330] Exemplarily, the second message is sent by the base station to the A-IOT device, and the second message carries at least one of the timing advance (also called timing advance), the first resource (UL grant), the device identifier, the temporary ID and / or the ID. The A-IOT device determines whether the access process / conflict resolution is completed by reading the device identifier in the second message. The A-IOT device determines that the device identifier in the second message matches itself and determines that the access process / conflict resolution is completed. The first type of A-IOT device sends the data to be sent on the first resource, and the second type or third type of A-IOT device sends the data to be sent on the first resource based on the second information or the backscattering of the excitation signal.

[0331] Exemplarily, the data sent by the A-IOT device on the first resource may carry the A-IOT device identification, and may be scrambled by a temporary ID and / or an ID.

[0332] In some embodiments, a timer is defined, and the A-IOT device starts the timer after sending the first message, and monitors the second message during the running of the timer.

[0333] Exemplarily, after the A-IOT device sends the first message, it starts the timer and listens to the second message sent by the base station during the operation of the timer. When the A-IOT device receives the second message and / or the device identifier contained in the second message matches, the A-IOT device stops the timer. Otherwise, the timer times out and the A-IOT device resends the first message. Exemplarily, the power climbing step is increased based on the transmission power of the last first message, and the first message is resent. The power climbing step and / or the initial transmission power of the first message and / or the timer length are obtained through the access configuration. Exemplarily, it is obtained through the access configuration broadcast by the SIB of the base station. Exemplarily, it is obtained through the dedicated signaling sent by the base station. Exemplarily, it is obtained through the excitation signal (continuous wave) sent by the base station. This is not specifically limited in the present disclosure.

[0334] The embodiments of the present disclosure further provide apparatuses for implementing any of the above methods. For example, an apparatus is provided that includes units or modules for implementing each step performed by the first device in any of the above methods. For another example, another apparatus is provided that includes units or modules for implementing each step performed by the second device in any of the above methods.

[0335] It should be understood that the division of the various units or modules in the above device is merely a division of logical functions. In actual implementation, they may be fully or partially integrated into a physical entity, or they may be physically separated. In addition, the units or modules in the device may be implemented in the form of a processor calling software: for example, the device includes a processor, the processor is connected to a memory, and the memory stores instructions. The processor calls the instructions stored in the memory to implement any of the above methods or implement the functions of the various units or modules of the above device, wherein the processor is, for example, a general-purpose processor, such as a central processing unit (CPU) or a microprocessor, and the memory is a memory within the device or a memory outside the device. Alternatively, the units or modules in the device can be implemented in the form of hardware circuits, and the functions of some or all of the units or modules can be realized by designing the hardware circuits. The above-mentioned hardware circuits can be understood as one or more processors; for example, in one implementation, the above-mentioned hardware circuit is an application-specific integrated circuit (ASIC), which realizes the functions of some or all of the above units or modules by designing the logical relationship of the components in the circuit; for example, in another implementation, the above-mentioned hardware circuit can be realized by a programmable logic device (PLD). Taking a field programmable gate array (FPGA) as an example, it can include a large number of logic gate circuits, and the connection relationship between the logic gate circuits is configured by configuring the configuration file, thereby realizing the functions of some or all of the above units or modules. All units or modules of the above devices can be realized in the form of software called by the processor, or in the form of hardware circuits, or in part by the form of software called by the processor, and the rest by hardware circuits.

[0336] In the embodiments of the present disclosure, the processor is a circuit with information processing capabilities. In one implementation, the processor can be a circuit with instruction reading and execution 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 relationship of the hardware circuit. The logical relationship of the above-mentioned hardware circuit is fixed or reconfigurable. For example, the processor is a hardware circuit implemented by 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 implementing the hardware circuit configuration 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. In addition, 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), a deep learning processing unit (DPU), etc.

[0337] FIG7A is a schematic diagram of the structure of the first device proposed in an embodiment of the present disclosure. As shown in FIG7A , the first device 7100 may include: at least one of a transceiver module 7101 and a processing module 7102. In some embodiments, the transceiver module 7101 is used to send a first message to a second device, where the second device is a network device or an intermediate node in an environmental Internet of Things scenario; the transceiver module 7101 is also used to receive a second message sent by the second device; the processing module 7102 is used to determine, based on the second message, the configuration information allocated by the second device to the first device, where the first device is an environmental Internet of Things device; wherein the first message includes at least one of the following: a first preamble sequence; a device identifier of the first device; and a device type of the first device.

[0338] In some embodiments, the first device 101 is a first type of environmental Internet of Things device, and the transceiver module 7101 can directly send the first message.

[0339] In some embodiments, the first device 101 is a second type or third type environmental Internet of Things device, and the transceiver module 7101 receives the first signal sent by the second device 102, and sends the first message to the second device through backscatter transmission of the first signal.

[0340] In some embodiments, the processing module 7102 is further configured to: select a first preamble sequence from the corresponding preamble sequence group according to the device type of the first device 101 , where the first preamble sequence implicitly indicates the device type of the first device 101 .

[0341] In some embodiments, the first message further includes an indication field, where the indication field indicates the device type of the first device 101 .

[0342] In some embodiments, the second message includes at least one of the following: a second preamble sequence, the second preamble sequence is used for synchronization adjustment of the first device 101; a timing advance, the timing advance is used for synchronization adjustment of the first device 101; a first resource, the first resource is used for the first device 101 to send data to be sent; a device identifier of the first device; and a dynamic identifier assigned to the first device 101 by the second device 102.

[0343] In some embodiments, the processing module 7102 is specifically configured to: determine that the device identifier carried in the second message matches the device identifier of the first device 101; and determine configuration information allocated by the second device to the first device.

[0344] In some embodiments, the transceiver module 7101 is further used to: send data to be sent on the first resource.

[0345] In some embodiments, the transceiver module 7101 is specifically configured to send data to be sent on a first resource, wherein the first device 101 is a first type of ambient IoT device. In some embodiments, the transceiver module 7101 is specifically configured to send data to be sent on the first resource by backscatter transmission based on a second message or a second signal sent by the second device 102, wherein the first device 101 is a second type or a third type of ambient IoT device.

[0346] In some embodiments, the data to be sent carries the device identifier and / or dynamic identifier of the first device 101 .

[0347] In some embodiments, the first resource includes at least one of the following: PUCCH resource; PUSCH resource; time domain position; frequency domain position; channel.

[0348] In some embodiments, the processing module 7102 is further used to: start a timer, where the timer is used to indicate the duration of monitoring the second message; and determine whether to resend the first message during the timer running.

[0349] In some embodiments, the processing module 7102 is configured to: stop the timer when the second message is monitored; or resend the first message when the second message is not monitored and the timer times out.

[0350] In some embodiments, monitoring the second message includes: receiving the second message; or, the device identifier carried in the received second message matches the device identifier of the first device 101 .

[0351] In some embodiments, the processing module 7102 is also used to: determine a first transmission power, where the first transmission power is the transmission power used by the first device when it last sent the first message before the timer is started; determine a second transmission power based on the first transmission power and the power climbing step; the transceiver module 7101 is used to: if the second message is not detected and the timer expires, resend the first message using the second transmission power.

[0352] In some embodiments, the processing module 7102 is specifically configured to: increase a power ramp-up step size on the first transmit power to determine the second transmit power.

[0353] In some embodiments, the first message is first transmitted at an initial transmission power.

[0354] In some embodiments, the transceiver module 7101 is further used to: obtain a second resource used to send the first message; and send the first message on the second resource.

[0355] In some embodiments, the transceiver module 7101 is further used to: obtain access configuration; wherein the access configuration includes at least one of the following: initial transmission power, power ramp-up step, timer configuration, and second resource.

[0356] In some embodiments, the transceiver module 7101 is specifically used to: receive a system information block SIB sent by the second device 102, the SIB including the access configuration; or, receive dedicated signaling sent by the second device 102, the dedicated signaling including the access configuration; or, receive a third signal sent by the second device 102, the third signal including the access configuration.

[0357] In some embodiments, the first signal, the second signal, and the third signal are excitation signals sent by the second device 102 .

[0358] In some embodiments, the second resource includes at least one of the following: a PRACH resource; a PUSCH resource; a time domain location; a frequency domain location; a channel.

[0359] Optionally, the transceiver module is used to execute at least one of the communication steps such as sending and / or receiving performed by the first device 101 in any of the above methods (for example, step S3101, step S3103, step S3106, but not limited thereto), which are not described in detail here. Optionally, the processing module is used to execute at least one of the other steps (for example, step S3102, step S3105, but not limited thereto) performed by the first device 101 in any of the above methods, which are not described in detail here.

[0360] FIG7B is a schematic diagram of the structure of the second device proposed in an embodiment of the present disclosure. As shown in FIG7B , the second device 7200 may include: at least one of a transceiver module 7201 and a processing module 7202. In some embodiments, the transceiver module 7201 is used to receive a first message sent by a first device, where the first device is an environmental Internet of Things device; the transceiver module 7201 is also used to send a second message to the first device, where the second message is used to determine the configuration information assigned by the second device to the first device, where the second device is a network device or an intermediate node in an environmental Internet of Things scenario; wherein the first message includes at least one of the following: a first preamble sequence; a device identifier of the first device; and a device type of the first device.

[0361] In some embodiments, the transceiver module 7201 is specifically used to: receive a first message sent by the first device 101, where the first device is an environmental Internet of Things device with energy storage and signal generation functions.

[0362] In some embodiments, the transceiver module 7201 is specifically used to: send a first signal to a first device so that the first device performs backscatter transmission of a first message sent to a second device through the first signal, wherein the first device is an environmental Internet of Things device with energy storage and no signal generation and amplification functions, or the first device is an environmental Internet of Things device with energy storage and signal amplification functions.

[0363] In some embodiments, the first preamble sequence is a preamble sequence selected by the first device from the corresponding preamble sequence group according to the device type of the first device; in this embodiment, the processing module 7202 is specifically used to: determine the device type of the first device based on the first preamble sequence carried in the first message.

[0364] In some embodiments, the first message further includes an indication field, where the indication field indicates a device type of the first device.

[0365] In some embodiments, the second message includes at least one of the following: a second preamble sequence, the second preamble sequence is used for synchronization adjustment of the first device; a timing advance, the timing advance is used for synchronization adjustment of the first device; a first resource, the first resource is used by the first device to send data to be sent; a device identifier of the first device; a dynamic identifier assigned to the first device by the second device.

[0366] In some embodiments, the transceiver module 7201 is further used to: receive data to be sent by the first device on the first resource.

[0367] In some embodiments, the first resource includes at least one of the following: PUCCH resource; PUSCH resource; time domain position; frequency domain position; channel.

[0368] In some embodiments, the first device is an environmental Internet of Things device with energy storage but no signal generation and amplification functions, or the first device is an environmental Internet of Things device with energy storage and signal amplification functions. Then, the data to be sent sent by the first device and received by the second device is data sent by the first device through backscatter transmission of the second message or the second signal sent by the second device.

[0369] In some embodiments, the data to be sent carries the device identifier and / or dynamic identifier of the first device.

[0370] In some embodiments, the transceiver module 7201 is further used to: send a system information block SIB, the SIB includes an access configuration; send dedicated signaling, the dedicated signaling includes an access configuration; send a third signal, the third signal includes the access configuration.

[0371] In some embodiments, the first signal, the second signal, and the third signal are excitation signals.

[0372] In some embodiments, the access configuration includes at least one of the following: a second resource, which is a resource used by the first device to send the first message; the initial sending power of the first message; the power climbing step; the configuration of a timer, which is used to indicate the duration of monitoring the second message sent by the second device, and the timer is used by the first device to determine whether it is necessary to resend the first message.

[0373] In some embodiments, the second resource includes at least one of the following: a PRACH resource; a PUSCH resource; a time domain location; a frequency domain location; a channel.

[0374] Optionally, the transceiver module is configured to execute at least one of the communication steps (e.g., step S3104, but not limited thereto) such as sending and / or receiving performed by the second device 102 in any of the above methods, which are not described in detail here. Optionally, the processing module is configured to execute at least one of the other steps performed by the second device 102 in any of the above methods, which are not described in detail here.

[0375] In some embodiments, the transceiver module may include a transmitting module and / or a receiving module, and the transmitting module and the receiving module may be separate or integrated. Optionally, the transceiver module may be interchangeable with the transceiver.

[0376] In some embodiments, the processing module can be a single module or can include multiple submodules. Optionally, the multiple submodules respectively execute all or part of the steps required to be executed by the processing module. Optionally, the processing module can be interchangeable with the processor.

[0377] Figure 8A is a schematic diagram of the structure of a communication device 8100 proposed in an embodiment of the present disclosure. Communication device 8100 can be a second device (e.g., a network device, such as an access network device, a core network device, etc.), or a first device (e.g., a terminal, such as a user equipment, etc.). It can also be a chip, chip system, or processor that supports a network device to implement any of the above methods, or a chip, chip system, or processor that supports a terminal to implement any of the above methods. Communication device 8100 can be used to implement the methods described in the above method embodiments. For details, please refer to the description of the above method embodiments.

[0378] As shown in Figure 8A, the communication device 8100 includes one or more processors 8101. The processor 8101 can be a general-purpose processor or a dedicated processor, for example, a baseband processor or a central processing unit. The baseband processor can be used to process the communication protocol and communication data, and the central processing unit can be used to control the communication device (such as a base station, a baseband chip, a terminal device, a terminal device chip, a DU or a CU, etc.), execute programs, and process program data. Optionally, the communication device 8100 is used to perform any of the above methods. Optionally, one or more processors 8101 are used to call instructions to enable the communication device 8100 to perform any of the above methods.

[0379] In some embodiments, the communication device 8100 further includes one or more transceivers 8102. When the communication device 8100 includes one or more transceivers 8102, the transceiver 8102 performs at least one of the communication steps such as sending and / or receiving in the above method (e.g., step S3101, step S3103, step S3104, step S3106, but not limited thereto), and the processor 8101 performs at least one of the other steps (e.g., step S3102, step S3105, but not limited thereto). In an optional embodiment, the transceiver may include a receiver and / or a transmitter, and the receiver and transmitter may be separate or integrated. Optionally, the terms transceiver, transceiver unit, transceiver, transceiver circuit, interface circuit, and interface may be interchangeable, the terms transmitter, transmitting unit, transmitter, and transmitting circuit may be interchangeable, and the terms receiver, receiving unit, receiver, and receiving circuit may be interchangeable.

[0380] In some embodiments, the communication device 8100 further includes one or more memories 8103 for storing data. Alternatively, all or part of the memories 8103 may be located outside the communication device 8100. In alternative embodiments, the communication device 8100 may include one or more interface circuits 8104. Optionally, the interface circuits 8104 are connected to the memory 8102 and may be configured to receive data from the memory 8102 or other devices, or to send data to the memory 8102 or other devices. For example, the interface circuits 8104 may read data stored in the memory 8102 and send the data to the processor 8101.

[0381] The communication device 8100 described in the above embodiment may be a network device or a terminal, but the scope of the communication device 8100 described in the present disclosure is not limited thereto, and the structure of the communication device 8100 may not be limited by FIG. 8A. The communication device may be an independent device or may be part of a larger device. For example, the communication device may be: 1) an independent integrated circuit IC, or a chip, or a chip system or subsystem; (2) a collection of one or more ICs, optionally, the above IC collection may also include a storage component for storing data or programs; (3) an ASIC, such as a modem; (4) a module that can be embedded in other devices; (5) a receiver, a terminal device, an intelligent terminal device, a cellular phone, a wireless device, a handheld device, a mobile unit, an in-vehicle device, a network device, a cloud device, an artificial intelligence device, etc.; (6) others, etc.

[0382] FIG8B is a schematic diagram of the structure of a chip 8200 according to an embodiment of the present disclosure. If the communication device 8100 can be a chip or a chip system, please refer to the schematic diagram of the structure of the chip 8200 shown in FIG8B , but the present disclosure is not limited thereto.

[0383] The chip 8200 includes one or more processors 8201. The chip 8200 is configured to execute any of the above methods.

[0384] In some embodiments, chip 8200 further includes one or more interface circuits 8202. Terms such as interface circuit, interface, and transceiver pins may be used interchangeably. In some embodiments, chip 8200 further includes one or more memories 8203 for storing data. Alternatively, all or part of memory 8203 may be located external to chip 8200. Optionally, interface circuit 8202 is connected to memory 8203 and may be used to receive data from memory 8203 or other devices, or may be used to send data to memory 8203 or other devices. For example, interface circuit 8202 may read data stored in memory 8203 and send the data to processor 8201.

[0385] In some embodiments, the interface circuit 8202 performs at least one of the communication steps (e.g., steps S3101, S3103, S3104, and S3106) of the aforementioned method. The interface circuit 8202 performing the communication steps (e.g., steps S3101, S3103, S3104, and S3106) of the aforementioned method, for example, means that the interface circuit 8202 performs data exchange between the processor 8201, chip 8200, memory 8203, or a transceiver device. In some embodiments, the processor 8201 performs at least one of the other steps (e.g., steps S3102 and S3105, but not limited thereto).

[0386] The present disclosure also proposes a storage medium having instructions stored thereon, which, when executed on the communication device 8100, causes the communication device 8100 to execute 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 is not limited thereto, and may also be a storage medium readable by other devices. Optionally, the storage medium may be a non-transitory storage medium, but is not limited thereto, and may also be a temporary storage medium.

[0387] The present disclosure also provides a program product, which, when executed by the communication device 8100, enables the communication device 8100 to perform any of the above methods. Optionally, the program product is a computer program product.

[0388] The present disclosure also proposes a computer program, which, when executed on a computer, causes the computer to perform any one of the above methods.

[0389] In the above embodiments, all or part of the embodiments can be implemented by software, hardware, firmware or any combination thereof. When implemented using software, all or part of the embodiments can be implemented in the form of a computer program product. The computer program product includes one or more computer programs. When the computer program is loaded and executed on a computer, all or part of the processes or functions described in the embodiments of the present disclosure are generated. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. The computer program can be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another computer-readable storage medium. For example, the computer program can be transmitted from one website, computer, server or data center to another website, computer, server or data center via a wired (e.g., coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) method. The computer-readable storage medium can be any available medium that can be accessed by a computer or a data storage device such as a server or data center that includes one or more available media integrated therein. The available medium may be a magnetic medium (eg, a floppy disk, a hard disk, a magnetic tape), an optical medium (eg, a high-density digital video disc (DVD)), or a semiconductor medium (eg, a solid state disk (SSD)).

[0390] Those skilled in the art will appreciate that the units and algorithm steps of each example 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 performed in hardware or software depends on the specific application and design constraints of the technical solution. Professionals and technicians 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.

[0391] Those skilled in the art will clearly understand that, for the convenience and brevity of description, the specific working processes of the systems, devices and units described above can refer to the corresponding processes in the aforementioned method embodiments and will not be repeated here.

[0392] The above description is merely a specific embodiment of the present disclosure, but the scope of protection of the present disclosure is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in this disclosure should be included in the scope of protection of the present disclosure. Therefore, the scope of protection of the present disclosure should be based on the scope of protection of the claims.

Claims

1. A communication method, characterized in that: The method is performed by a first device, and includes: Sending a first message to a second device, where the second device is a network device or an intermediate node in an ambient Internet of Things scenario; receiving a second message sent by the second device; Determining, based on the second message, configuration information allocated by the second device to the first device, where the first device is an environmental Internet of Things device; The first message includes at least one of the following: a first leader sequence; a device identifier of the first device; A device type of the first device.

2. The method according to claim 1, wherein The sending the first message to the second device includes: The first message is sent to the second device, wherein the first device is an environmental Internet of Things device with energy storage and signal generation functions.

3. The method according to claim 1, wherein The method further comprises: receiving a first signal sent by the second device; The sending of the first message to the second device includes: The first message is sent to the second device by backscattering the first signal; wherein the first device is an environmental Internet of Things device with energy storage and no signal generation and amplification functions, or the first device is an environmental Internet of Things device with energy storage and signal amplification functions.

4. The method according to any one of claims 1 to 3, wherein The method further comprises: The first preamble sequence is selected from a corresponding preamble sequence group according to the device type of the first device, where the first preamble sequence is used to indicate the device type of the first device.

5. The method according to any one of claims 1 to 3, wherein The first message further includes an indication field, where the indication field is used to indicate a device type of the first device.

6. The method according to claim 1, wherein The second message includes at least one of the following: a second preamble sequence, where the second preamble sequence is used for synchronization adjustment of the first device; a timing advance, where the timing advance is used for synchronization adjustment of the first device; a first resource, where the first resource is used by the first device to send data to be sent; a device identifier of the first device; The dynamic identifier assigned by the second device to the first device.

7. The method according to claim 6, wherein The method further comprises: Sending data to be sent on the first resource, wherein the first device is an environmental Internet of Things device with energy storage and signal generation functions; or The data to be sent is sent on the first resource by backscatter transmission through the second message or the second signal sent by the second device, wherein the first device is an environmental Internet of Things device with energy storage and no signal generation and amplification functions, or the first device is an environmental Internet of Things device with energy storage and signal amplification functions.

8. The method according to claim 7, wherein The data to be sent carries the device identifier of the first device and / or the dynamic identifier.

9. The method according to any one of claims 6 to 8, wherein The first resource includes at least one of the following: Physical uplink control channel PUCCH resources; Physical uplink shared channel PUSCH resources; Temporal location; Frequency domain position.

10. The method according to any one of claims 1 to 9, wherein The method further comprises: Starting a timer, the timer is used to monitor the duration of the second message; During the running of the timer, it is determined whether to resend the first message.

11. The method according to claim 10, wherein The determining whether to resend the first message during the running of the timer includes: Upon receiving the second message, the timer is stopped; or If the second message is not monitored and the timer times out, the first message is resent.

12. The method according to claim 11, wherein The monitoring of the second message includes any one of the following: receiving the second message; The device identifier carried in the received second message matches the device identifier of the first device.

13. The method according to claim 11, wherein The method further comprises: Determine a first transmit power, where the first transmit power is a transmit power used by the first device when sending the first message most recently before the timer is started; determining a second transmit power based on the first transmit power and a power ramp-up step size; The step of not monitoring the second message and resending the first message after the timer times out includes: If the second message is not monitored and the timer times out, the first message is resent using the second transmit power.

14. The method according to claim 13, wherein The determining the second transmit power based on the first transmit power and the power ramp-up step size includes: The power ramp-up step is increased on the first transmit power to determine the second transmit power.

15. The method according to claim 13 or 14, characterized in that The first message is sent for the first time at an initial transmission power.

16. The method according to claim 1, wherein The method further comprises: Acquire a second resource used to send the first message; the second resource is used by the first device to send the first message.

17. The method according to claim 16, wherein The method further comprises: Get access configuration; The access configuration includes at least one of the following: the initial transmit power; The power ramp-up step length; the configuration of the timer; The second resource.

18. The method according to claim 17, wherein The obtaining of access configuration includes: receiving a system information block SIB sent by the second device, where the SIB includes the access configuration; or, receiving dedicated signaling sent by the second device, where the dedicated signaling includes the access configuration; or, A third signal sent by the second device is received, where the third signal includes the access configuration.

19. The method according to claim 18, wherein The first signal, the second signal, and the third signal are excitation signals.

20. The method of claim 16, wherein: The second resource includes at least one of the following: Physical random access channel PRACH resources; PUSCH resources; Temporal location; Frequency domain position.

21. A communication method, characterized in that: The method is performed by a second device, and includes: receiving a first message sent by a first device, where the first device is an environmental Internet of Things device; Sending a second message to the first device, where the second message is used to determine configuration information allocated by the second device to the first device, where the second device is a network device or an intermediate node in an environmental Internet of Things scenario; The first message includes at least one of the following: a first leader sequence; a device identifier of the first device; A device type of the first device.

22. The method according to claim 21, wherein The receiving a first message sent by the first device includes: The first message sent by the first device is received, where the first device is an environmental Internet of Things device with energy storage and signal generation functions.

23. The method according to claim 21, wherein The method further comprises: Send a first signal to the first device, so that the first device backscatters the first message sent to the second device through the first signal, wherein the first device is an environmental Internet of Things device with energy storage and no signal generation and amplification functions, or the first device is an environmental Internet of Things device with energy storage and signal amplification functions.

24. The method according to any one of claims 21 to 23, wherein The first preamble sequence is a preamble sequence selected by the first device from a corresponding preamble sequence group according to a device type of the first device; the method further includes: Determine a device type of the first device according to the first preamble sequence carried in the first message.

25. The method according to any one of claims 21 to 23, wherein The first message further includes an indication field, where the indication field is used to indicate a device type of the first device.

26. The method of claim 21, wherein: The second message includes at least one of the following: a second preamble sequence, where the second preamble sequence is used for synchronization adjustment of the first device; a timing advance, where the timing advance is used for synchronization adjustment of the first device; a first resource, where the first resource is used by the first device to send data to be sent; a device identifier of the first device; The dynamic identifier assigned by the second device to the first device.

27. The method according to claim 26, wherein The first resource includes at least one of the following: Physical uplink control channel PUCCH resources; Physical uplink shared channel PUSCH resources; Temporal location; Frequency domain position.

28. The method of claim 26, wherein: The first device is an environmental Internet of Things device with energy storage but no signal generation and amplification functions, or the first device is an environmental Internet of Things device with energy storage and signal amplification functions, then the data to be sent is data sent by the first device through backscatter transmission of the second message or the second signal sent by the second device.

29. The method according to any one of claims 26 to 28, wherein The data to be sent carries the device identifier of the first device and / or the dynamic identifier.

30. The method of claim 21, wherein The method further comprises any of the following: Sending a system information block SIB, wherein the SIB includes an access configuration; Sending dedicated signaling, where the dedicated signaling includes the access configuration; A third signal is sent, wherein the third signal includes the access configuration.

31. The method of claim 30, wherein: The first signal, the second signal, and the third signal are excitation signals.

32. The method of claim 30, wherein: The access configuration includes at least one of the following: a second resource, where the second resource is a resource used by the first device to send the first message; an initial transmission power of the first message; Power ramp-up step length; Configuration of a timer, the timer is used to monitor the duration of the second message, and the timer is used by the first device to determine whether to resend the first message.

33. The method of claim 32, wherein: The second resource includes at least one of the following: Physical random access channel PRACH resources; PUSCH resources; Temporal location; Frequency domain position.

34. A first device, characterized in that include: A transceiver module, configured to send a first message to a second device, where the second device is a network device or an intermediate node in an environmental Internet of Things scenario; The transceiver module is further configured to receive a second message sent by the second device; a processing module, configured to determine, based on the second message, configuration information allocated by the second device to the first device, where the first device is an environmental Internet of Things device; The first message includes at least one of the following: a first leader sequence; a device identifier of the first device; A device type of the first device.

35. A second device, characterized in that: include: a transceiver module, configured to receive a first message sent by a first device, where the first device is an environmental Internet of Things device; The transceiver module is further configured to send a second message to the first device, where the second message is used to determine configuration information allocated by the second device to the first device, where the second device is a network device or an intermediate node in an environmental Internet of Things scenario; The first message includes at least one of the following: a first leader sequence; a device identifier of the first device; A device type of the first device.

36. A communication system, characterized in that: include: A first device, configured to perform the communication method according to any one of claims 1 to 20; The second device is configured to execute the communication method according to any one of claims 21 to 33.

37. A communication device, characterized in that: include: one or more processors; The communication device is used to execute the communication method according to any one of claims 1-20 and 21-33.

38. A storage medium storing instructions, characterized in that: When the instruction is executed on a communication device, the communication device is caused to execute the communication method according to any one of claims 1-20 and 21-33.

39. A computer program product comprising a computer program, characterized in that When the computer program is executed by the communication device, the computer program implements the steps of the communication method according to any one of claims 1 to 20 and 21 to 33.

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