Communication method and communication apparatus

Abstract

Provided in the present application are a communication method and a communication apparatus, which can be applied to the scenario of the ambient Internet of Things (Ambient IOT). When an intermediate node and an AIoT device communicate in a UL frequency band, and simultaneously, the intermediate node and a network device also perform UL transmission in the UL frequency band, the AIoT communication and the UL transmission conflict with each other. A solution provided by the present application comprises executing, according to different conditions met by AIoT communication and UL transmission, a transmission processing corresponding to each condition, the transmission processing comprising: canceling the transmission of AIoT signal or canceling the transmission of part of the AIoT signals, canceling the UL transmission or canceling part of the UL transmission, reducing the transmission power of AIoT signals, reducing the transmission power of UL transmission, delaying the transmission of AIoT signals, etc., thus reasonably avoiding conflicts, and avoiding other problems such as resource waste or transmission opportunity waste caused by conflict avoidance.

Description

Communication method and communication device

[0001] This application claims priority to the Chinese patent application filed with the State Intellectual Property Office of China on February 18, 2024, with application number 202410183418.4 and invention name “Communication Method and Communication Device”, the entire contents of which are incorporated by reference into this application. Technical Field

[0002] The present application relates to the field of wireless communication technology, and more specifically, to a communication method and a communication device. Background Art

[0003] In recent years, the Internet of Things (IoT) has garnered widespread attention in the wireless communications sector. It's expected that more "things" will be connected to each other, improving productivity and comfort. By further reducing the size, complexity, and power consumption of IoT devices, tens or even hundreds of billions of them can be deployed for a variety of applications, providing added value to the entire supply chain. However, powering all of these devices with manually replaceable or rechargeable batteries is impractical, as this would result in high maintenance costs, serious environmental concerns, and even safety risks in certain use cases, such as wireless sensors in the power and oil industries.

[0004] In practical applications, battery-free devices with no energy storage capabilities, or devices with limited energy storage and no need for manual replacement or charging, are limited in size and complexity. The output power of energy harvesters typically ranges from 1μW to several hundred μW. Existing cellular devices may not be able to effectively harvest and operate energy at this power consumption, leading to the development of Ambient Internet of Things (AIoT) devices.

[0005] AIoT devices can communicate with network devices directly or through an intermediate node. In the latter scenario, the intermediate node must communicate with the AIoT device on the UL band and the network device on the same UL band, causing a conflict between the two communications. Summary of the Invention

[0006] The present application provides a communication method and a communication device that can reasonably avoid conflicts between AIoT signals and UL transmissions.

[0007] In a first aspect, a communication method is provided, which is applied to a communication device or a chip of a communication device. The communication device may be an intermediate node in an environmental Internet of Things scenario. The method may include: determining a first time-frequency resource corresponding to an AIoT signal, the first time-frequency resource and a second time-frequency resource for uplink UL transmission are located in the same uplink frequency band, and the first time-frequency resource and the second time-frequency resource overlap or partially overlap in the time domain; according to a first condition satisfied by the AIoT signal and the UL transmission, performing transmission processing corresponding to the first condition on the AIoT signal and the UL transmission, the transmission processing corresponding to the first condition including one of the following:

[0008] Canceling the transmission of the AIoT signal or partially cancelling the transmission of the AIoT signal;

[0009] canceling the UL transmission or canceling part of the UL transmission;

[0010] Reducing the transmission power of the AIoT signal;

[0011] reducing the transmit power of the UL transmission; or,

[0012] Delay sending of the AIoT signal.

[0013] Based on this technical solution, when the first time-frequency resource of the AIoT signal conflicts with the second time-frequency resource of the intermediate node for UL transmission, the intermediate node performs corresponding transmission processing according to the conditions satisfied by the AIoT signal and UL transmission (specifically referred to as the first condition), which can reasonably avoid the conflict between the two signals. In addition, because the setting of the first condition takes into account multiple factors of the AIoT signal and the UL transmission, it can reasonably avoid conflicts while reducing other adverse effects caused by conflict avoidance, such as waste of resources or waste of transmission opportunities.

[0014] In combination with the first aspect, in certain implementations of the first aspect, the first time-frequency resource is used to send the AIoT signal; or, the first time-frequency resource is used to receive the AIoT signal from a first device, and the first device satisfies one or more of the following: supporting reflection communication, having the ability to amplify uplink UL signals and / or downlink DL signals, and generating UL transmission.

[0015] In this implementation, the intermediate node can reasonably avoid conflicts between sending AIoT signals and UL transmissions due to limitations such as transmission power and transmission capacity; or, it can also reasonably avoid conflicts between receiving the AIoT signal of the first device received by the intermediate node and the UL transmission performed by the intermediate node.

[0016] In conjunction with the first aspect, in some implementations of the first aspect, the first device satisfies one of the following conditions:

[0017] The first device supports reflection communication and does not have the ability to amplify uplink (UL) signals or downlink (DL) signals;

[0018] The first device supports reflection communication and has the ability to amplify UL signals or DL ​​signals;

[0019] The first device supports generating UL transmission and has the ability to amplify UL signals or DL ​​signals; or

[0020] The first device supports reflection communication and generates UL transmission, and has the ability to amplify UL signals or DL ​​signals.

[0021] In this implementation, the first device can be specifically divided into the four types of AIoT devices mentioned above. For details, please refer to the AIoT devices of type 0 to type 3 in the embodiment.

[0022] In conjunction with the first aspect, in some implementations of the first aspect, the first condition and the transmission processing corresponding to the first condition include any one of the following:

[0023] Condition 1: The UL transmission is used to carry a physical random access channel PRACH, a physical uplink control signal PUCCH, or a physical uplink shared channel PUSCH. The transmission processing corresponding to Condition 1 includes: canceling the sending of the AIoT signal;

[0024] Condition 2: The UL transmission is used to carry the transmission of a physical random access channel PRACH, a physical uplink control signal PUCCH, or a physical uplink shared channel PUSCH, and the first time-frequency resource and the second time-frequency resource partially overlap in the time domain; the transmission processing corresponding to Condition 2 includes: canceling the transmission of the AIoT signal on the overlapping time domain resources;

[0025] Condition 3: The UL transmission is used to carry a physical uplink shared channel (PUSCH) of the first priority; the transmission processing corresponding to Condition 3 includes: canceling the transmission of the AIoT signal;

[0026] Condition 4: The UL transmission is used to carry a physical uplink shared channel (PUSCH) of type B, and the time domain resources used to carry the PUSCH of type B include symbols that are abandoned due to failure to meet actual repetition requirements; the transmission processing corresponding to Condition 4 includes: sending the AIoT signal on the symbols that are abandoned;

[0027] Condition 5: The UL transmission is used to carry TBoMS transmission, and one or more time slots of the first time-frequency resource and the second time-frequency resource overlap. The transmission processing corresponding to Condition 5 includes: canceling the transmission of the AIoT signal in the overlapping time slots;

[0028] Condition 6: The second time-frequency resource includes a UL symbol indicated by a slot format indicator SFI, and the first time-frequency resource coincides with the UL symbol indicated by the SFI; the transmission processing corresponding to Condition 6 includes: canceling the transmission of the AIoT signal on the UL symbol;

[0029] Alternatively, condition 6: the second time-frequency resource includes a flexible symbol indicated by an SFI, and the first time-frequency resource overlaps with the flexible symbol indicated by the SFI; the transmission processing corresponding to condition 6 includes: continuing to send the AIoT signal on the overlapping flexible symbol;

[0030] Condition 7: The UL transmission is used to carry a physical uplink shared channel PUSCH that enables joint channel estimation; the transmission processing corresponding to the condition 7 includes: canceling the transmission of the AIoT signal; or,

[0031] Condition 8: A first indication message is received from a network device, and the first indication message is used to indicate the cancellation of sending the AIoT signal; the transmission processing corresponding to Condition 8 includes: canceling the sending of the AIoT signal; or, the first indication message is used to indicate the cancellation of sending the AIoT signal and the UL transmission; the transmission processing corresponding to Condition 8 includes: canceling the sending of the AIoT signal and the UL transmission.

[0032] In this implementation, the corresponding transmission processing varies depending on the UL transmission. In some transmission processing corresponding to certain conditions, if there are no separate resources available for the transmission of AIoT signals, the idle resources of the UL transmission are used for the transmission of AIoT signals, which can reduce the signaling overhead of resource allocation.

[0033] In combination with the first aspect, in certain implementations of the first aspect, if canceling the transmission of part of the AIoT signal is canceling the sending of the AIoT signal in the overlapping time domain part, and the number of symbols in the remaining time domain part other than the overlapping time domain part in the first time-frequency resource is lower than a threshold value, the method also includes: canceling the sending of the AIoT signal in the remaining time domain part.

[0034] In combination with the first aspect, in certain implementations of the first aspect, the correspondence between the threshold of the number of symbols of the remaining time domain part and the subcarrier spacing satisfies one or more rows in Table 1:

[0035] Table 1

[0036] In this implementation, a threshold for the number of remaining symbols of the AIoT signal is defined. The threshold for the number of symbols can be configured according to the subcarrier spacing, which can ensure the effective transmission of the remaining AIoT signals when some AIoT signal transmissions are canceled.

[0037] In conjunction with the first aspect, in some implementations of the first aspect, the first condition and the transmission processing corresponding to the first condition include any one of the following:

[0038] Condition 9: The UL transmission is used to carry a physical uplink shared channel PUSCH of type B, and the PUSCH of type B includes multiple actual repetitions. If the first time-frequency resource overlaps with some of the multiple actual repetitions in the time domain, and the overlapping time domain resources include the starting symbols of the multiple actual repetitions; the transmission processing corresponding to condition 9 includes: canceling the actual repetition (actual repetition) of the PUSCH of type B that sends the overlapping time domain resources; or,

[0039] Condition 9: The UL transmission is used to carry a PUSCH of type B, and the PUSCH of type B includes multiple actual repetitions. If the first time-frequency resource overlaps with some of the multiple actual repetitions in the time domain, and the overlapping time domain resources do not include the starting symbol of the multiple actual repetitions; the transmission processing corresponding to Condition 9 includes: canceling the transmission of the actual repetitions on the overlapping time domain resources;

[0040] Condition 10: The UL transmission is used to carry a sounding reference signal SRS, and the first time-frequency resource and the second time-frequency resource partially overlap in the time domain; the transmission processing corresponding to Condition 10 includes: canceling the transmission of the SRS on the overlapping time domain resources.

[0041] In conjunction with the first aspect, in some implementations of the first aspect, the first condition and the transmission processing corresponding to the first condition include:

[0042] Condition 11: The UL transmission is used to carry the physical uplink shared signal PUSCH that enables joint channel estimation; the transmission processing corresponding to Condition 11 includes: keeping the transmission power of the UL transmission unchanged to send the UL transmission, and the remaining power of the first device is used to send the AIoT signal.

[0043] In conjunction with the first aspect, in some implementations of the first aspect, the first condition and the transmission processing corresponding to the first condition include:

[0044] Condition 12: The UL transmission is used to carry the sounding reference signal SRS or the PUSCH of the second priority; the transmission processing corresponding to Condition 12 includes: keeping the transmission power of the AIoT signal unchanged to send the AIoT signal, and using the remaining power of the first device for the UL transmission.

[0045] With reference to the first aspect, in certain implementations of the first aspect, the first time-frequency resource and the second time-frequency resource are the same frequency domain resource; and the first condition and the transmission processing corresponding to the first condition include:

[0046] Condition 13: The UL transmission is a grant-free transmission or a scheduling request SR transmission, and the second time-frequency resource includes a time domain resource without a transmission requirement for the UL transmission; the transmission processing corresponding to Condition 13 includes: sending the AIoT signal on the time domain resource without the transmission requirement; or,

[0047] Condition 13: The UL transmission is an unauthorized transmission or an SR transmission, and there is a transmission requirement for the UL transmission on the time domain resources included in the second time-frequency resources; the transmission processing corresponding to Condition 13 includes: canceling the sending of the AIoT signal.

[0048] In conjunction with the first aspect, in some implementations of the first aspect, the first condition and the transmission processing corresponding to the first condition include:

[0049] Condition 14: The second time-frequency resource includes a flexible time domain unit indicated by a time slot format indicator SFI, and the first time domain resource overlaps with one or more of the flexible time domain units; the transmission processing corresponding to Condition 14 includes: canceling the UL transmission on the overlapping flexible time domain units.

[0050] In combination with the first aspect, in certain implementations of the first aspect, the canceling of sending the AIoT signal includes canceling the sending of the AIoT signal when the priority of the AIoT signal is lower than the priority of the UL transmission.

[0051] In combination with the first aspect, in certain implementations of the first aspect, if the transmission processing corresponding to the first condition is to delay sending the AIoT signal; the method also includes: sending an indication message to the first device, the indication message is used to indicate the cancellation of sending the AIoT signal on the overlapping time domain resources, or the indication message is used to indicate a third time domain resource, the third time domain resource is used for sending the AIoT signal, and the third time domain resource has no intersection with the time domain resources of the first time-frequency resource.

[0052] In combination with the first aspect, in some implementations of the first aspect, the AIoT signal includes a carrier signal.

[0053] In combination with the first aspect, in some implementations of the first aspect, the AIoT signal includes AIoT signaling, and the AIoT signaling includes one or more of the following: a selection signal for indicating the start of inventory counting; a query signal for indicating that the first device feeds back identification information; and an affirmative response ACK signal for indicating that the identification information of the first device is correctly received.

[0054] In the above two implementations, the AIoT signal may include a carrier signal or AIoT signaling. The carrier signal may also be called a carrier wave or an excitation signal, without limitation.

[0055] In the second aspect, a communication method is provided, which is applied to a second device (such as a network device) or a chip of the second device. Taking the second device as an example, the method includes: the second device determines a first time-frequency resource for sending an AIoT signal to the first device, the first time-frequency resource and the second time-frequency resource are located in the same uplink frequency band, and the second time-frequency resource is used to receive uplink UL transmissions of other terminal devices, wherein the first time-frequency resource and the second time-frequency resource overlap or partially overlap in the time domain; the first device satisfies one or more of the following: supporting reflection communication, having the ability to amplify uplink UL signals or downlink DL signals, and generating UL transmissions; the second device cancels sending the AIoT signal or cancels the UL transmission according to the conditions satisfied by the AIoT signal and the UL transmission.

[0056] The technical effects of the method of the second aspect are basically similar to those of the method of the first aspect and will not be described in detail.

[0057] In combination with the second aspect, in certain implementations of the second aspect, if the UL transmission is canceled, the method further includes: sending a first indication signal to a terminal device corresponding to the UL transmission, wherein the first indication signal is used to indicate the cancellation of the UL transmission.

[0058] In combination with the second aspect, in certain implementations of the second aspect, if the UL transmission is canceled, the method further includes: sending a second indication signal to an auxiliary terminal device of the network device, wherein the second indication signal is used to indicate the cancellation of sending the AIoT signal.

[0059] In combination with the second aspect, in certain implementations of the second aspect, the second indication signal is used to indicate the cancellation of the sending of the AIoT signal within a period of time.

[0060] In a third aspect, a communication device is provided, wherein the communication device has the function of implementing the method of the first aspect or the second aspect, or any possible implementation thereof. The function can be implemented by hardware, or by hardware executing corresponding software implementation. The hardware or software includes one or more units corresponding to the above-mentioned functions.

[0061] In a fourth aspect, the present application provides a communication device, comprising at least one processor, wherein the at least one processor is coupled to at least one memory, wherein the at least one memory is used to store a computer program or instruction, and the at least one processor is used to call and run the computer program or instruction from the at least one memory, so that the communication device executes the method in the first aspect or any possible implementation thereof; or executes the method in the second aspect or any possible implementation thereof.

[0062] In a fifth aspect, the present application provides a communication device comprising a communication interface and a circuit, wherein the communication interface is used to receive information and / or data to be processed and transmit the information and / or data to the circuit; the circuit is used to process the information and / or data to obtain processed information and / or data; the communication interface is also used to output the processed information and / or data to execute the method in the first aspect or any possible implementation thereof; or to execute the method in the second aspect or any possible implementation thereof.

[0063] In a sixth aspect, the present application provides a computer-readable storage medium, which stores computer program code or instructions. When the computer instructions are executed on a computer, the method as in the first aspect or any possible implementation thereof is implemented, or the method as in the second aspect or any possible implementation thereof is implemented.

[0064] In a seventh aspect, the present application provides a computer program product, comprising computer program code or instructions, which, when the computer program code or instructions are run on a computer, enables the method in the first aspect or any possible implementation thereof to be implemented, or the method in the second aspect or any possible implementation thereof to be implemented.

[0065] In an eighth aspect, the present application provides a wireless communication system, comprising the first device in the first aspect and / or the second device in the second aspect. In addition, the wireless communication system may also include an AIoT device. BRIEF DESCRIPTION OF THE DRAWINGS

[0066] FIG1 is a schematic diagram of a scenario 1 applicable to an embodiment of the present application.

[0067] FIG2 is a schematic diagram of scenario 2 applicable to an embodiment of the present application.

[0068] Figure 3 is a schematic diagram of the system architecture of an AIoT device.

[0069] FIG4 is a schematic diagram of a scenario in which the technical problem actually solved by the technical solution of this application occurs.

[0070] FIG5 is a schematic diagram of another scenario in which the technical problem actually solved by the technical solution of this application occurs.

[0071] FIG6 is a schematic flow chart of the communication method 200 provided in this application.

[0072] Figure 7 is a schematic diagram of a conflict between a UE performing UL transmission and a UE sending an AIoT signal to an AIoT device.

[0073] FIG8 is an example of canceling UL transmission when there is a conflict between UL transmission and AIoT signal.

[0074] FIG9 is a schematic diagram of how a UE resolves conflicts between UL transmission and sending AIoT signaling.

[0075] 10 and 11 are schematic diagrams of a UE transmission and reception conflict scenario.

[0076] FIG12 is a schematic diagram of a scenario in which a signal received by a network device is interfered with.

[0077] FIG13 is a schematic diagram of the structure of an intermediate node provided in an embodiment of the present application.

[0078] FIG14 is a schematic structural diagram of a communication device provided in this application.

[0079] FIG15 is another structural diagram of the communication device provided in this application.

[0080] FIG16 is another structural diagram of the communication device provided in this application. DETAILED DESCRIPTION

[0081] The technical solution in this application will be described below with reference to the accompanying drawings.

[0082] Most existing wireless communication devices are battery-powered, requiring manual replacement or recharging. The automation and digitization of various industrial scenarios have opened up many new markets, requiring new IoT technologies to support battery-free devices without energy storage, or IoT devices with energy storage that do not require manual battery replacement or recharging. Such devices must be extremely small in size to effectively adapt to diverse use cases.

[0083] In practical applications, battery-free devices with no energy storage capabilities, or devices with limited energy storage that do not require manual replacement or recharging, are limited in size and complexity. The output power of energy harvesters typically ranges from 1 microwatt to several hundred microwatts. Existing cellular devices may not be able to effectively perform energy harvesting at this power consumption.

[0084] Under this current situation, the following two UE types and their usage scenarios are proposed.

[0085] One type of UE has an output power consumption of approximately 1 μW, an energy storage capability, and no capability of amplifying uplink and downlink signals. It can only be used for backscatter transmission on an externally provided carrier wave.

[0086] Another type of UE has a peak power of no more than a few hundred μW and has energy storage capabilities to amplify uplink and / or downlink signals. This type of UE can generate signals internally or reflect signals via an external carrier.

[0087] The typical system architecture includes the following two scenarios: Scenario 1 and Scenario 2.

[0088] Scenario 1

[0089] Figure 1 is a schematic diagram of scenario 1 applicable to an embodiment of the present application. In scenario 1, the base station is generally in a small-scale working mode, and the base station communicates directly with the AIoT device.

[0090] Scenario 2

[0091] Figure 2 is a schematic diagram of Scenario 2 applicable to an embodiment of the present application. In Scenario 2, the base station is generally located outdoors and communicates with the AIoT device through an intermediate node (such as a UE). The intermediate node is generally located indoors.

[0092] In the above two scenarios, the embodiments of this application propose the following types of AIoT devices:

[0093] (1) Type 0 (backscatter): supports only backscatter communication and does not have DL / UL amplification capability;

[0094] (2) Type 1 (backscatter): supports only backscatter communication and has DL / UL amplification capability;

[0095] (3) Type 2 (UL-generated): supports only the ability to generate UL transmissions and has DL / UL amplification capabilities;

[0096] (4) Type 3 (backscatter and UL-generated): It has both backscatter communication and the ability to generate UL transmission, and has DL / UL amplification capabilities; it can also be called a mixed AIoT device.

[0097] Figure 3 is a schematic diagram of the system architecture of an AIoT device. AIoT devices typically have a single antenna; alternatively, they can have two antennas, one receiving antenna and one transmitting antenna. AIoT devices receive signals or carrier waves through the antenna and transmit them through the antenna, either by reflecting them on the carrier wave or generating an uplink signal (UL-generated), depending on the information being carried.

[0098] The following two scenarios are used to analyze the actual problems that the technical solution of this application is intended to solve.

[0099] FIG4 is a schematic diagram of a scenario in which the technical problem actually solved by the technical solution of this application occurs.

[0100] In scenario 2, the UE and the AIoT device communicate in the UL band, and the UE and the network device (such as the base station) also communicate in the UL band. These two communications conflict with each other. The conflict includes two parts: (1) There is a conflict between the UE sending the carrier signal and sending the UL signal, such as limited transmission capability, limited transmission power, etc.; (2) There is a conflict between the UE receiving the reflected signal of the AIoT device and sending the UL signal. This is a transmission and reception conflict. Since the strength of the reflected signal to be received is very low, it may reach -70dBm, but the strength of the transmitted UL signal is very high, it may reach 10dBm. It can be seen that the difference between the two is 70dB to 80dB.

[0101] FIG5 is a schematic diagram of another scenario in which the technical problem actually solved by the technical solution of this application occurs.

[0102] In Scenario 1, a network device (such as a base station) communicates with some UEs, and the network device or the UE attached to the network device needs to send carrier signals on the uplink frequency band. Because these carrier signals are sent at a short distance, there is a risk of adjacent-band interference with the communications of ordinary UEs. Because the two may not be in the same device, the signal strength difference may be around 30dB to 40dB (the carrier signal is stronger than the received signal of the ordinary UE).

[0103] One known solution to address these conflicts is to define transmission priorities to determine which signal to transmit. For example, if a UE needs to transmit both an uplink signal and a V2X signal simultaneously, it may need to select one of the two signals due to factors such as limited transmission capacity and power. In such emergencies, the UE determines which signal to transmit based on the priority of the uplink and V2X signals. Specifically, if the uplink signal has a higher priority, the uplink signal is transmitted; if the V2X signal has a higher priority, the V2X signal is transmitted.

[0104] However, the communication scenario in the Ambient Internet of Things (Ambient IoT) is different from the above-mentioned scenario of uplink signal and V2X signal conflict. For example, if the uplink signal conflicts with the V2X signal, if the transmission of some symbols is canceled, the entire transmission cannot be correctly demodulated. However, for Ambient IoT communication, especially for carrier wave transmission, since it is only used as an excitation source / signal source and not for data transmission, if some symbols are not transmitted, the remaining symbols can still be used as an excitation source. Therefore, the existing method of resolving conflicts based on priority, when applied to Ambient IoT communication scenarios, may waste transmission opportunities.

[0105] To this end, this application provides a communication method, which aims to provide a solution to the conflict between AIoT signals and UL transmission, while helping to reduce the waste of resources caused by avoiding conflicts.

[0106] The technical solution of this application is applicable to the above-mentioned scenarios 1 and 2. For example, in scenario 1, the base station and the AIoT device communicate directly, and the base station or the auxiliary UE (not shown in Figure 2) sends a carrier signal, and the AIoT device reflects the signal. At the same time, the base station may have other communicating UEs performing uplink transmission in the uplink frequency band. In scenario 2, uplink transmission is performed between the UE and the base station, and the UE sends a carrier signal to the AIoT device, and also receives the reflected signal from the AIoT device.

[0107] The embodiments of the present application mainly involve the following network elements or functional modules.

[0108] 1) Network equipment: communicate with AIoT devices through UE, or communicate directly with AIoT devices. The communication target can support high-level services such as "warehouse inventory". In some cases, in order to send carrier signals, the base station may carry an auxiliary UE (also referred to as an intermediate node in this embodiment of the application). In this embodiment of the application, the network equipment includes an access network device. The access network device is a device with wireless transceiver functions, which is used to communicate with the terminal device. The access network device includes but is not limited to base stations (base transceiver station (BTS), node B (Node B), evolved node B (eNodeB) / eNB, or the next generation node B (gNodeB) / gNB), transmission reception point (TRP), base station subsequently evolved by the third generation partnership project (3GPP), access node in wireless fidelity (Wi-Fi) system, wireless relay node, wireless backhaul node, etc. The base station can be: a macro base station, a micro base station, a pico base station, a small station, a relay station, etc. Multiple base stations can support networks with the same access technology or networks with different access technologies. The base station can include one or more co-sited or non-co-sited transmission and reception points. The access network device can also be a wireless controller, a centralized unit (CU), and / or a distributed unit (DU) in a cloud radio access network (CRAN) scenario. The access network device can also be a server, etc.

[0109] 2) UE: Also called an intermediate node, such as the UE in Scenario 2, between the base station and the AIoT device. On the one hand, it sends a carrier signal or a scheduling signal to the AIoT device, and on the other hand, it receives the reflected signal or uplink signal of the AIoT device, and forwards the received reflected signal or uplink signal to the base station. In the embodiment of the present application, UE is also called a terminal device, which is a device with wireless transceiver functions, which can be a fixed device, a mobile device, a handheld device (such as a mobile phone), a wearable device, a vehicle-mounted device, etc. The terminal device is used to connect people, objects, machines, etc., and can be widely used in various scenarios.

[0110] 3) AIoT devices: Receive carrier signals or scheduling signals sent by base stations / intermediate nodes, and reflect or send uplink signals to base stations / intermediate nodes, which can be used to complete services such as inventory counting.

[0111] Figure 6 is a schematic flow chart of a communication method 200 provided herein. Method 200 may be performed by an intermediate node or a chip implemented in an intermediate node. The intermediate node may be a terminal device, such as a UE attached to a network device (e.g., a base station) in the aforementioned Ambient IoT. The following description uses an intermediate node as an example.

[0112] 210. The intermediate node determines a first time-frequency resource corresponding to the AIoT signal.

[0113] The first time-frequency resource and the second time-frequency resource used for uplink (UL) transmission are located in the same uplink frequency band, and the first time-frequency resource and the second time-frequency resource overlap or partially overlap in the time domain.

[0114] 220. The intermediate node performs transmission processing corresponding to the first condition on the AIoT signal and the UL transmission according to the first condition satisfied by the AIoT signal and the UL transmission, where the transmission processing corresponding to the first condition includes one of the following:

[0115] Cancel the transmission of AIoT signals or cancel the transmission of part of AIoT signals;

[0116] Cancel UL transmission or cancel part of UL transmission;

[0117] Reduce the transmission power of AIoT signals;

[0118] Reduce the transmit power of UL transmission; or,

[0119] Delay sending of the AIoT signal.

[0120] The scheme of method 200 is applicable to the two conflicts introduced above, namely, the conflict of sending AIoT signals and performing UL transmission due to the limitations of the intermediate node's transmission power, transmission capability, etc. (recorded as scenario 1), and the conflict of sending and receiving AIoT signals (such as reflected signals sent by AIoT devices) performed by the intermediate node for UL transmission and reception (recorded as scenario 2) of AIoT devices. In the former conflict, the first time-frequency resource is used to send AIoT signals; in the latter conflict, the first time-frequency resource is used to receive AIoT signals of AIoT devices. In addition, the scheme can also be applied to scenarios such as conflicts in which the auxiliary UE of the network device sends signals to the AIoT device, which interferes with the network device receiving UL transmissions of other UEs (recorded as scenario 3). The following embodiments are described separately.

[0121] In these different scenarios, the "transmission processing" in method 200 can be specifically "transmission processing" and / or "reception processing." For example, if method 200 is applied to scenario 1 above, the transmission processing is specifically the "transmission processing" of the intermediate node sending AIoT signals and performing UL transmission; if method 200 is applied to scenario 2, the transmission processing is specifically the transmission processing of the intermediate node performing UL transmission and the reception processing of receiving AIoT signals. In this case, the transmission processing may include sending, not sending, or partial sending, and the reception processing may include receiving, not receiving, or partial receiving. If method 200 is applied to scenario 3, the transmission processing may be the reception processing of the network device for the signals of the AIoT device and the UL transmission of other UEs.

[0122] In the embodiments of the present application, the AIoT device satisfies one or more of the following:

[0123] Supports reflection communication, has the ability to amplify uplink (UL) signals and / or downlink (DL) signals, and generates UL transmission.

[0124] As an example, the AIoT devices may include AIoT devices of type 0 to type 3 as described above.

[0125] For the sake of simplicity, in the following embodiments, the intermediate node is referred to as a UE. Therefore, unless otherwise specified, a UE refers to an intermediate node.

[0126] Example 1

[0127] The UE performs UL transmission on the FDD UL, which affects the UE's ability to send carrier signals to the AIoT device on the FDD UL, as shown in Figure 7.

[0128] Figure 7 shows the conflict between the UE's transmit power and limited transmit capability in the scenario where the UE performs UL transmission and the UE sends an AIoT signal to an AIoT device. Figure 7 is the conflict described in Scenario 1 above.

[0129] In response to the problems arising in the scenario shown in Figure 7, the solution provided by this application is mainly as follows: when the UE is limited by transmission power, transmission capacity, etc., resulting in a conflict between UL transmission and AIoT signal transmission (for example, sending carrier signals), the UE cancels or cancels part of the UL transmission, or cancels or cancels part of the AIoT signal, or determines the power of the UL transmission and / or AIoT signal.

[0130] An exemplary process is as follows:

[0131] Step 1: The UE determines the first time-frequency resource corresponding to the AIoT signal.

[0132] As an implementation method, the UE sends a scheduling request (SR) to the base station to request time-frequency resources for use in AIoT communication. The SR can be an independently allocated SR, that is, it is only used to request the time-frequency resources used by the AIoT signal (that is, the first time-frequency resource mentioned above). Based on the UE's request, the base station sends downlink signaling or a downlink message to the UE. The downlink signaling or downlink message is used to indicate the first time-frequency resource (also recorded as time-frequency resource A) used by the UE to send the AIoT signal.

[0133] As another implementation, network devices can allocate a portion of the frequency band, such as several subcarriers or resource blocks (RBs), for AIoT communication. In this implementation, the UE does not need to request resources from the base station.

[0134] In addition to allocating time-frequency resources, the downlink signaling / downlink message sent by the base station can also be used to instruct the UE to send a carrier signal or a scheduling signal. Since the continuous transmission of the carrier signal will cause the UE to consume energy too quickly, it is possible to instruct the UE to send the carrier signal only when there are business needs such as "inventory counting" on the base station side, which can save the UE's power consumption. In this case, the downlink signaling / downlink message can carry a field to instruct or trigger the UE to send a carrier signal, or the downlink signaling / downlink message can carry a message, which is forwarded by the UE to the AIoT device.

[0135] As an example, the downlink signaling may be downlink control information (DCI), which belongs to physical layer signaling; and the downlink message may be a high-layer message, such as a medium access control (MAC) layer, a radio resource control (RRC) layer, or a non-access stratum (NAS) layer message, etc., without limitation.

[0136] Step 2: The UE sends UL transmission or AIoT signal according to the conditions satisfied by the AIoT signal and UL transmission.

[0137] These conditions may be pre-set. Accordingly, the base station determines whether to receive the UL transmission according to the pre-set conditions.

[0138] In the embodiments of the present application, the sending processing performed on the AIoT signal and the UL transmission is different according to the different conditions satisfied by the time-frequency resources corresponding to the AIoT signal and the time-frequency resources of the UL transmission. The detailed description is given below for each case.

[0139] Case 1: The time-frequency resource A and the time-frequency resource of UL transmission overlap or partially overlap in the time domain and are located in the same UL frequency band in the frequency domain.

[0140] In case 1, the UE can handle the situation as follows:

[0141] (1) Solution 1: Cancel sending AIoT signals.

[0142] Among them, canceling the sending of AIoT signals means performing UL transmission.

[0143] Specifically, the UE may discard the AIoT signal when certain conditions are met. Examples of these conditions are given below.

[0144] Condition 1: When the AIoT signal coincides with PRACH, PUCCH, or PUSCH, the AIoT signal is canceled.

[0145] Generally speaking, random access, uplink control, and uplink data (carried by PUSCH) are uplink services, which are more time-sensitive and important than latency-insensitive inventory management services such as AIoT. Therefore, when the time domain resources of the AIoT signal conflict with the time domain resources of these uplink services, it is possible to consider not sending the AIoT signal.

[0146] Condition 2: When part of the AIoT signal partially overlaps with PRACH, PUCCH, or PUSCH in the time domain, the AIoT signal in the overlapping time domain is canceled.

[0147] Similar to condition 1, the difference is that when an AIoT signal is sent, if part of the AIoT signal overlaps with these uplink channels, and the other part does not overlap, then only the AIoT signal in the overlapping time domain part is discarded, and the AIoT signal in the non-overlapping part continues to be sent. The above-mentioned "one AIoT signal" can be an AIoT signal within a time domain unit. The time domain unit can be one or more time slots, or a certain number of symbol lengths, etc.; it can also be other time domain granularity.

[0148] Condition 3: When the AIoT signal coincides with PUSCH priority 1, the AIoT signal is canceled; when it coincides with PUSCH priority 0, the PUSCH is abandoned.

[0149] It should be noted here that PUSCH has two priority types: priority value 1 (representing high priority) and priority value 0 (representing low priority). When the AIoT signal coincides with the PUSCH, the priority of the PUSCH determines whether to abandon the transmission of the AIoT signal, that is, to ensure the transmission of the high-priority PUSCH.

[0150] Condition 4: When the AIoT signal overlaps with PUSCH type B, PUSCH type B abandons the transmitted symbol because it does not meet the actual repetition requirement and continues to transmit the AIoT signal.

[0151] It should be understood that PUSCH repetition transmissions are divided into two types: Type A and Type B. Type B can be transmitted on multiple consecutive uplink symbols across time slots, and this transmission can be allocated to multiple actual repetitions. When one or more actual repetitions are transmitted in a time slot and there are insufficient symbols left, these symbols will be abandoned for PUSCH transmission, thus becoming idle. If AIoT signals are transmitted on these symbols, the transmission of AIoT signals should be guaranteed.

[0152] Condition 5: When the AIoT signal overlaps with a time slot in multiple PUSCHs of TBoMS, the AIoT signal in the overlapping time domain is discarded.

[0153] It should be noted that TBoMS is a method of transmitting PUSCH over multiple time slots, specifically, one TB is transmitted jointly over multiple time slots. In this case, if one time slot is not transmitted, it will affect PUSCH demodulation in all time slots. Therefore, when some time slots overlap with AIoT signals, the AIoT signals are not transmitted to avoid affecting PUSCH demodulation in the non-overlapping time slots.

[0154] Condition 6: If the AIoT signal coincides with the UL symbol indicated by the slot format indication (SFI), the AIoT signal is not transmitted. If the AIoT signal coincides with the flexible symbol indicated by the SFI, the AIoT signal is transmitted on the overlapping flexible symbol.

[0155] SFI is a slot format indicator that indicates the function of each symbol within a slot. Currently, only two symbols exist for the UL band: the flexible symbol and the UL symbol. The UL symbol is generally used to transmit uplink signals, while the flexible symbol can be used for functions such as transceiver switching. Therefore, if an AIoT signal overlaps with the UL symbol, the AIoT signal is discarded. However, if the AIoT signal overlaps with the flexible symbol, the AIoT signal can continue to be transmitted.

[0156] Condition 7: When the AIoT signal coincides with the PUSCH with DMRS bundling enabled, the AIoT signal is abandoned.

[0157] DMRS bundling is a joint channel estimation method for reference signals, which means that the DMRS transmitted by multiple PUSCHs can be jointly used for channel estimation, but downlink transmission or other transmissions cannot occur in the middle, because these downlink transmissions or other transmissions will cause phase or amplitude deviations between the previous and next DMRS signals. Therefore, when UE-side joint channel estimation is enabled, if one or more transmitted PUSCHs coincide with the time domain of the AIoT signal, the AIoT signal is canceled.

[0158] Condition 8: When the UE receives an UL cancellation, it abandons the AIoT signal and / or UL transmission on the symbol corresponding to the UL cancellation.

[0159] UL cancellation, introduced in previous versions of the communications standard, is used to cancel uplink transmissions on certain symbols, allowing these resources to be allocated for transmissions by other UEs. When a conflict occurs between an UL transmission and an AIoT signal, the base station can send an UL cancellation instruction to cancel either the UL transmission, the AIoT signal, or both, thereby avoiding the conflict.

[0160] In the examples of the above 8 conditions, under some conditions, when the AIoT signal and UL transmission conflict, the corresponding transmission processing is to cancel the transmission of part of the AIoT signal.

[0161] In the implementation of canceling part of the AIoT signal, another processing method is also provided: considering that the AIoT device needs to receive the AIoT signal first to store energy before it can be reflected, if part of the AIoT signal is canceled, when the remaining time domain length after canceling part of the AIoT signal is lower than a threshold number, the AIoT signal on the remaining time domain length is also canceled, that is, a minimum time domain length threshold of an AIoT signal is defined. When the transmission of part of the AIoT signal is canceled, if the remaining time domain length of the AIoT signal is lower than the minimum time domain length threshold, the transmission of the remaining AIoT signal is also canceled. The time domain length can be based on the granularity of time slots, symbols, etc., or other granularity. As an example, the time domain length is based on the granularity of symbols. In this case, the minimum time domain length threshold is based on the granularity of symbols. That is, the minimum time domain length threshold can be several symbols. The minimum symbol number threshold can be configured separately according to the subcarrier spacing. Table 1 gives an example. The correspondence between the threshold corresponding to the minimum number of symbols (i.e., the symbol number threshold in Table 1) and the subcarrier spacing can satisfy one or more rows in Table 1.

[0162] Table 1

[0163] (2) Processing method 2: cancel sending UL transmission.

[0164] Specifically, the UE may abandon UL transmission when certain conditions are met. Examples of some conditions are given below.

[0165] Condition 9: When the AIoT signal partially overlaps with the PUSCH Type B signal, the actual repetition of the overlapping portion is abandoned.

[0166] As previously mentioned, PUSCH Type B can be divided into multiple actual repetitions. If some actual repetitions overlap, specific analysis is required to determine how to cancel them. In one case, the actual repetitions overlap from the start symbol. In this case, the transmission of this actual repetition can be discarded, as the missing start symbol makes it impossible to demodulate. In another case, the start symbol of the actual repetition does not overlap, but some symbols after the start symbol overlap. In this case, the transmission of the actual repetition for the overlapping portion can be canceled, while the earlier start symbol portion can still be used for decoding. Figure 8 illustrates condition 9. As shown in the figure, the AIoT signal partially overlaps with actual repetitions 2 and 3 through 4. Since the overlap between the AIoT signal and actual repetition 2 does not begin at the start of actual repetition 2, the overlap between actual repetition 2 and the AIoT signal can be canceled. Since the start position of the AIoT signal and actual repetition 4 overlaps, the transmission of actual repetition 4 can be canceled. In addition, the starting positions of the AIoT signal and the actual repetition 3 do not overlap, so the overlapping parts of the actual repetition 3 and the AIoT signal can be cancelled.

[0167] Condition 10: When the AIoT signal overlaps with the SRS, the overlapping SRS is discarded.

[0168] SRS is used by the UE to send signals to the base station to measure the uplink channel status. It is generally sent periodically. If the channel changes slightly, the absence of an SRS transmission does not significantly affect the channel measurement results. Therefore, the importance of SRS is relatively low. When the time domain resources of SRS overlap with the time domain of AIoT signals, the SRS transmission in the overlapping time domain is abandoned.

[0169] (3) Solution 3: Reduce the power of the AIoT signal and keep the power of the UL transmission unchanged.

[0170] Likewise, option 3 can be used if certain conditions are met. For example:

[0171] Condition 11: When the AIoT signal overlaps with the PUSCH with DMRS bundling enabled, the PUSCH DMRS power remains unchanged.

[0172] Similar to condition 7 above, in order to ensure that the DMRS phase / amplitude of multiple PUSCH transmissions remains unchanged or changes very little, when the UE power is sufficient to support simultaneous transmission of UL transmission and AIoT signals (or if the UE power limit is left after UL transmission), the UL transmission power is maintained to avoid the DMRS amplitude change affecting the joint channel estimation, and the remaining power is allocated to the transmission of the AIoT signal.

[0173] 4) Solution 4: Reduce the power of the AIoT signal and keep the UL transmission power unchanged.

[0174] Condition 12: When the AIoT signal coincides with SRS or PUSCH priority 0, the AIoT signal power remains unchanged; this situation is similar to condition 11. When the AIoT signal is transmitted together with a low-priority or low-importance uplink channel, such as SRS or PUSCH priority 0, if the UE's power cap is sufficient for AIoT signal transmission, the AIoT signal power can be guaranteed first, thereby ensuring the AIoT signal coverage range, while the low-priority or low-importance uplink transmission can reduce the power transmission.

[0175] Case 2: The time-frequency resource A and the UL transmission resource overlap in time domain and are the same in frequency domain (for example, periodic resources such as grant-free / SR).

[0176] In case 2, the UE may have different processing methods according to different situations.

[0177] Condition 13: If there is a transmission requirement such as grant-free / scheduling request (SR), the AIoT signal transmission is canceled.

[0178] Typically, periodic resources such as grant-free or SR are used for uplink transmission, but are only used when there is a transmission demand and remain idle the rest of the time. Therefore, if no separate resources are allocated for AIoT transmission, these resources can be used for AIoT transmission when idle, thereby reducing the signaling overhead of resource allocation and resource waste. In this case, the UE is required to determine the resources used for AIoT transmission from the resources allocated by grant-free or SR, and when there is no grant-free or SR transmission demand, transmit the AIoT signal, such as the carrier signal, on these resources.

[0179] Case 3: Time-frequency resource A coincides with a symbol potentially used for UL transmission in the time slot.

[0180] In case 3, after configuring time-frequency resource A and SFI, the base station avoids scheduling uplink transmission in the flexible symbol of the time slot. Alternatively, the base station sends a UL cancellation indication to cancel uplink transmission on the flexible symbol.

[0181] Based on the various conditions described above, the embodiments of the present application specifically consider the type of UL transmission (PRACH, PUCCH, PUSCH, SRS), partial or full overlap in the time domain, whether PUSCH has DMRS bundling when reducing power, and when canceling PUSCH transmission. Consider the priority (0 / 1) of PUSCH, TBoMS, SFI indication, excitation priority, etc.

[0182] Optionally, as another possible implementation method, the priority of the AIoT signal can also be predefined. When the priority of the UL transmission is lower than that of the AIoT signal, the UL transmission is abandoned; otherwise, the transmission of the AIoT signal is abandoned. As an example, the AIoT signal may include an AIoT signal and a carrier signal for carrying scheduling signaling. Furthermore, the AIoT signal for carrying scheduling signaling can be assigned priority 1 (priority 1), and the carrier signal can be assigned priority 0 (priority 0), where priority 1 is higher than priority 0.

[0183] It should be noted that the AIoT signal in the embodiment of the present application may include a carrier signal and may also include scheduling signaling sent by the UE to the AIoT device. Both the carrier signal and the scheduling signaling may have the problems of transmission power limitation, transmission and reception conflict mentioned in the above embodiment. Therefore, the AIoT signal in the above embodiment can be specifically replaced by AIoT signaling or carrier signal.

[0184] In Example 1, multiple scenarios are considered, and solutions are given for the case where the UE faces conflicts between UL transmission and AIoT signal transmission in multiple scenarios.

[0185] Due to the different characteristics of carrier signals and AIoT signaling, for AIoT signaling, when the UE faces a conflict between AIoT signaling and UL transmission, this application also provides some other processing methods, which are explained below in conjunction with Example 2.

[0186] Example 2

[0187] The UE performs UL transmission on the FDD UL, which affects the UE's ability to send AIoT signaling on the FDD UL.

[0188] It can be seen that Example 2 is still about the conflict between the UE performing UL transmission and sending AIoT signals (specifically AIoT signaling) to the AIoT device, for example, limited transmission power, limited transmission capacity, etc. Therefore, Example 2 is another example in the above scenario 1.

[0189] In Example 2, the way in which the UE determines the time-frequency resource A (i.e., the first time-frequency resource) corresponding to the AIoT signaling can be found in the description of Example 1 and will not be repeated here.

[0190] In summary, after determining the first time-frequency resource corresponding to the AIoT signaling, the UE can decide to delay sending the AIoT signaling based on the conflict situation.

[0191] In Example 2, the time-frequency resource A and the second time-frequency resource used for UL transmission are as described in Example 1, and may include the following possible situations:

[0192] Case 1: The time-frequency resource A and the time-frequency resource of UL transmission overlap or partially overlap in the time domain and are located in the same UL frequency band in the frequency domain.

[0193] In case 1, the UE can handle the situation as follows.

[0194] (1) Processing method 1: Delay sending AIoT signaling.

[0195] After the UL transmission is completed or after a preset delay, the UE determines whether there is overlap, and sends the AIoT signaling when there is no overlap.

[0196] The conditions under which the UE delays sending AIoT signaling can be compared to the conditions for canceling AIoT signaling in Example 1. That is, in Example 1, if a certain condition is met, the UE cancels sending AIoT signaling; whereas in Example 2, the UE delays sending AIoT signaling. The conditions for canceling AIoT signaling have been detailed in Example 1 and will not be repeated here.

[0197] Figure 9 is a schematic diagram of how the UE resolves conflicts between UL transmission and sending AIoT signaling. As shown in Figure 9, the AIoT signaling sent by the UE may include Select signals, Query signals, and ACK signals. When these signals coincide with the time domain of UL transmission, the AIoT signaling can be delayed. For example, it can be delayed by 1 time slot and then determine whether there is a conflict. It will not transmit the AIoT signaling until there is no conflicting UL transmission on the nth time slot, where n is a positive integer. For another example, it can be delayed for a period of time until there is no conflict before transmitting the AIoT signaling.

[0198] (2) Processing method 2: cancel UL transmission.

[0199] The applicable conditions for canceling UL transmission can refer to the conditions for canceling UL transmission in Example 1 and will not be repeated here.

[0200] Case 2: The time-frequency resource A and the time-frequency resource of UL transmission overlap in the time domain and are the same in the frequency domain.

[0201] As an example, UL transmission is used to carry grant-free transmission or SR transmission, and the resources used to carry grant-free transmission or SR transmission are generally periodic resources. Specifically, on these periodic resources, when there is a transmission requirement such as grant-free / SR, the UE delays sending AIoT signaling; after the UL transmission is completed, it determines whether to send AIoT signaling. As described in the above embodiment, the periodic resources used for grant-free or SR are for uplink transmission, but are only used when there is a transmission requirement, and remain idle for the rest of the time. Therefore, if separate resources are not allocated for the transmission of AIoT signaling, these periodic resources can be used for the transmission of AIoT signaling when idle, that is, when AIoT signaling conflicts with transmissions such as grant-free or SR, the transmission of AIoT signaling is delayed until the AIoT signaling is sent in a non-conflicting time slot within these resources.

[0202] Case 3: The time-frequency resource A overlaps with the time domain resource potentially used for UL transmission in the time slot.

[0203] In case 3, the AIoT signaling is sent with a delay. For example, when the time-frequency resource A used to send the AIoT signaling coincides with the UL symbol indicated by the SFI, the AIoT signaling is sent with a delay.

[0204] Example 3 below is for a transmission / reception conflict between a UE receiving an AIoT signal from an AIoT device and performing a UL transmission to a network device (also described in Scenario 2 above). The UE can perform corresponding transmission processing based on the conditions met between the AIoT signal and the UL transmission.

[0205] Example 3

[0206] Figures 10 and 11 are schematic diagrams of the UE's transmission and reception conflict scenarios. As shown in Figure 10, the AIoT device sends a reflected signal to the UE after receiving the carrier signal. The UE receives the reflected signal from the AIoT device; in addition, the UE also performs UL transmission to the network device (such as a base station). The UE receives the reflected signal and performs UL transmission, resulting in a transmission and reception conflict. As shown in Figure 11, the AIoT signal sent by the AIoT device can be AIoT signaling. The UE receives the AIoT signaling from the AIoT device; the AIoT signaling and the UL transmission sent by the UE to the network device generate a transmission and reception conflict.

[0207] In Example 3, the process of the UE receiving a signal from an AIoT device or performing UL transmission may include the following steps:

[0208] Step 1: The UE determines the time-frequency resource A for receiving the AIoT signal.

[0209] The manner in which the UE determines the time-frequency resource A can refer to the several manners in Example 1, which will not be described in detail here.

[0210] Step 2: Perform corresponding transmission processing according to the conditions satisfied by the AIoT signal and UL transmission.

[0211] Specifically, the time-frequency resources corresponding to the AIoT signal and the time-frequency resources of the UL transmission may satisfy the following conditions:

[0212] Case 1: Time-frequency resource A overlaps or partially overlaps with the time domain resource of UL transmission and is located in the same UL band in the frequency domain;

[0213] Case 2: Time-frequency resource A overlaps or partially overlaps with the time domain resource of UL transmission, and the frequency domain resource is the same;

[0214] Case 3: The time-frequency resource A overlaps with the time domain resource potentially used for UL transmission.

[0215] The specific processing methods in these three cases can refer to the processing in Example 1 or Example 2. The difference is that in Example 3, the conflict between the AIoT signal and the UL transmission is a transceiver conflict. Due to the large interference of the transceiver conflict, the reception of the AIoT signal (such as the reflected signal in Figure 10 or the AIoT signaling in Figure 11) can be canceled, the UL transmission can be canceled, or the reception of the AIoT signal can be delayed. Generally, adjusting the transmission power is not considered. If the reception of the AIoT signal is canceled or delayed, the UE, as the receiving device, needs to notify the AIoT device.

[0216] Since various conditions have been described in detail in Example 1, they will not be described in detail here to avoid redundancy.

[0217] It should be noted that since Example 3 is aimed at transmission and reception conflicts, the conditions satisfied by the AIoT signal and UL transmission in Example 1 should be described as: when the time-frequency resources of the UE for receiving the signal of the AIoT device and the time-frequency resources for the UE to send UL transmission overlap or partially overlap in the time domain, how does the UE handle it? The other descriptions are similar and will not be repeated. Taking condition 1 in Example 1 as an example, in Example 1, condition 1 is: the time-frequency resources for the UE to send the AIoT signal to the AIoT device overlap with PRACH, PUCCH, and PUSCH; in Example 3, it should be adjusted to: the time-frequency resources for the UE to receive the AIoT signal of the AIoT device overlap with PRACH, PUCCH, and PUSCH. The other conditions are also similar. Based on the example of condition 1, those skilled in the art can clearly know how the other conditions in Example 1 are used in Example 3, and will not be repeated.

[0218] In addition, as another implementation method, when the UE determines that receiving the signal of the AIoT device and performing UL transmission conflict, the UE can send an indication message to the AIoT device, and the indication message is used to indicate the cancellation of the transmission of the AIoT signal on the overlapping time domain resource to avoid the conflict. Or the indication message is used to indicate another time-frequency resource (for example, called a third time-frequency resource), and the third time-frequency resource is used by the AIoT device to send the AIoT signal, thereby avoiding the transmission and reception conflict of the two signals. Among them, the third time-frequency resource is later than the first time-frequency resource in the time domain, and the time domain resources of the third time-frequency resource and the first time-frequency resource have no intersection.

[0219] Examples 1 to 3 above are examples of how a UE can avoid conflicts between receiving / sending AIoT signals and UL transmissions. The method for avoiding conflicts between these two signals proposed in the technical solution of this application is also applicable to network equipment.

[0220] For example, if an auxiliary UE of a network device (e.g., a base station) transmits an AIoT signal on the FDD UL band, the AIoT signal may interfere with the network device's reception of UL transmissions from other UEs on the FDD UL band. For the network device, this conflict is caused by the auxiliary UE's transmission of the AIoT signal to the AIoT device, causing a conflict (reception conflict, i.e., the conflict described in Scenario 3 above) with the network device's reception of UL transmissions from other UEs. This is explained below with reference to Example 4.

[0221] Example 4

[0222] FIG12 is a schematic diagram of a scenario in which a signal received by a network device is interfered with.

[0223] The network device receives the AIoT signal on the FDD UL, which interferes with the network device receiving the UL transmission of other UEs on the FDD UL.

[0224] Similar to the transmission process in the above three examples, the network device performs the corresponding reception process based on the conditions satisfied between the AIoT signal and the UL transmission. Specific processing methods are as follows.

[0225] (1) Processing method 1: The network device sends an indication signal to indicate the cancellation of UL transmission or the cancellation of sending AIoT signals.

[0226] Specifically, in the same FDD UL frequency band, when the time domain resources of the UL transmission and the AIoT signal overlap, the network device can send a first indication signal to the UE corresponding to the UL transmission, the first indication signal being used to instruct the cancellation of the UL transmission. Alternatively, the network device can send a second indication signal to the auxiliary UE, the second indication signal being used to instruct the auxiliary UE to cancel the transmission of the AIoT signal to the AIoT device.

[0227] As an example, the first indication signal and the second indication signal may be different signals; or the first indication signal and the second indication signal may be the same signal. For example, the network device sends a cancellation message to the UE corresponding to the UL transmission and the auxiliary UE. The UE corresponding to the UL transmission receives the cancellation message and cancels the UL transmission; the auxiliary UE receives the cancellation message and cancels sending the AIoT signal.

[0228] The overlap of the AIoT signal and the UL transmission can be a partial overlap of time domain resources, such as one or more time slots. In this case, the UL transmission or AIoT signal transmission in the overlapping time slot can be canceled.

[0229] In the known scheme, the UL cancellation message (UL cancellation) is used to indicate the cancellation of UL transmission within a time domain range, and the applicable UL transmission only includes PRACH, PUCCH, PUSCH or SRS. In the present application, as an implementation method, the UL cancellation in the known scheme is reused, and the function of UL cancellation is extended to also indicate the cancellation of sending AIoT signals. As another example, a separate cancellation signaling can be designed to cancel the transmission of AIoT signals within a range, or to cancel the transmission of a specific AIoT signaling, without limitation.

[0230] As another implementation method, when the AIoT signal conflicts with the UL transmission, the network device may cancel the UL transmission with a lower priority, such as SRS, based on the priority of the UL transmission, and send a corresponding indication signal to indicate the cancellation of the UL transmission with a lower priority; or according to the priority of the AIoT signal, when the priority of the AIoT signal is high, cancel the UL transmission and send a corresponding indication signal to indicate the cancellation of the UL transmission.

[0231] Specifically, the applicable conditions for canceling UL transmission or canceling sending AIoT signals can refer to the conditions in Example 1, and will not be repeated here.

[0232] (2) Processing method 2: Cancel sending AIoT signals.

[0233] In the same FDD UL band, when the AIoT signal conflicts with the time domain resources of the scheduled UL transmission, the AIoT signal is canceled. As an example, whether to cancel the AIoT signal can be determined based on the priority of the UL transmission or the AIoT signal. For example, when the UL transmission has a higher priority than the AIoT signal, the UL transmission is sent and the AIoT signal is canceled; when the AIoT signal has a higher priority than the UL transmission, the AIoT signal is sent and the UL transmission is canceled. If the priorities of the two are the same, the network device determines or randomly selects whether to cancel the AIoT signal or the UL transmission.

[0234] In processing method 2, the applicable conditions for canceling the AIoT signal can be specifically referred to the conditions for canceling the sending of the AIoT signal in Example 1, and will not be repeated here.

[0235] (3) Processing method 3: The receiver of the network device for receiving UL transmission includes a filter, and the filter does not include the frequency band occupied by the AIoT signal, so that interference can be reduced through filtering.

[0236] Figure 13 is a schematic diagram of the structure of the intermediate node provided in an embodiment of the present application. As shown in Figure 13, the intermediate node may include an uplink communication module and an AIoT communication module. In some examples, the intermediate node sends an SR to the network device through the uplink communication module to request time-frequency resource A; further, the intermediate node receives a signal from the network device through the uplink communication module, which is used to indicate time-frequency resource A. In some examples, the intermediate node performs transmission processing corresponding to the first condition according to the set first condition, such as sending UL transmission through the uplink communication module or sending a carrier signal through the AIoT communication module.

[0237] The communication method provided by this application is described in detail above. The communication device provided by this application is introduced below.

[0238] See FIG14 , which is a schematic structural diagram of a communication device provided in this application.

[0239] As shown in Figure 14, a communication device 1000 includes a processing module 1001 and a communication module 1002. The communication device 1000 can be a communication device, or a device applied to a communication device and capable of implementing the corresponding functions of the communication device, such as a chip, a chip system, or a circuit. For example, the communication device can include an intermediate node (e.g., a UE) or a network device (e.g., an access network device) in an ambient IoT scenario.

[0240] The communication module may also be a transceiver module, a transceiver, a transceiver, or a transceiver device. The processing module may also be a processor, a processing board, a processing unit, or a processing device. Optionally, the communication module is used to perform the sending and receiving operations of the intermediate node or network device in any of the method embodiments. The device used to implement the receiving function in the communication module can be regarded as a receiving unit, and the device used to implement the sending function in the communication module can be regarded as a sending unit, that is, the communication module includes a receiving unit and a sending unit. The processing module is used to perform operations / processing related to the internal implementation of the intermediate node or network device in any of the method embodiments. It should be understood that the corresponding specific operations of each module can be referred to the description in the method embodiment and will not be repeated here.

[0241] Furthermore, it should be noted that the aforementioned communication module and / or processing module may be implemented as a virtual module. For example, the processing module may be implemented as a software functional unit or a virtual device, and the communication module may be implemented as a software function or a virtual device. Alternatively, the processing module or the communication module may be implemented as a physical device. For example, if the device is implemented as a chip / hardware circuit, the communication module may be an input / output circuit and / or a communication interface that performs input operations (corresponding to the aforementioned receiving operations) and output operations (corresponding to the aforementioned sending operations); the processing module may be an integrated circuit or a logic circuit, etc.

[0242] The division of modules in this application is illustrative and represents only a logical functional division. In actual implementation, other division methods may be used. Furthermore, the functional modules in the examples of this application may be integrated into a single module, physically exist separately, or two or more modules may be integrated into a single module. The aforementioned integrated modules may be implemented in the form of hardware, software functional modules, or a combination of hardware and software functional modules, without limitation.

[0243] Referring to FIG15 , the present application also provides a schematic structural diagram of another communication device.

[0244] The communication device 1100 can be used to implement the functions of any communication device (for example, an intermediate node or a network device) described in the aforementioned method embodiments. The communication device 1100 may include at least one processor 1110. Optionally, the processor 1110 (or processing device) is coupled to a memory, and the memory may be located within the communication device, or the memory may be integrated with the processor, or the memory may be located outside the communication device. For example, the communication device 1100 may also include at least one memory 1120. The memory 1120 stores the necessary computer programs, instructions and / or data for implementing any of the above embodiments; the processor 1110 may execute the computer programs, instructions and / or data stored in the memory 1120 to complete the corresponding functions of the intermediate node or network device in any of the above embodiments.

[0245] The communication device 1100 may further include a communication interface 1130, through which the communication device 1100 may exchange information with other devices. Exemplarily, the communication interface 1130 may be a transceiver, a circuit, a bus, a module, a pin, or another type of communication interface. When the communication device 1100 is a chip-type device or circuit, the communication interface 1130 in the device 1100 may also be an input / output circuit that may input information (or receive information) and / or output information (or send information). The processor may be an integrated circuit or a logic circuit, etc., and the processor may determine output information based on the input information.

[0246] Coupling in this application refers to an indirect coupling or communication connection between devices, units, or modules, which can be electrical, mechanical, or other forms, and is used for information exchange between devices, units, or modules. Processor 1110 may operate in conjunction with memory 1120 and communication interface 1130. This application does not limit the connection medium between the processor 1110, memory 1120, and communication interface 1130.

[0247] Referring to Figure 16 , the present application also provides a chip, wherein chip 30 includes circuit 31 and communication interface 32. Input / output interface 32. Circuit 31 can be a logic circuit, integrated circuit, etc., and communication interface 32 can also be an input / output circuit, an input / output interface, an interface circuit, etc., which can input information (or receive information) or output information (or send information). Chip 30 can execute the methods performed by the intermediate node or network device in each embodiment of the present application.

[0248] In addition, the present application also provides a computer-readable storage medium, which stores computer instructions. When the computer instructions are executed on a computer, the operations and / or processing performed by the intermediate node or network device in each method embodiment of the present application are executed.

[0249] The present application also provides a computer program product, which includes computer program code or instructions. When the computer program code or instructions are run on a computer, the operations and / or processing performed by the intermediate node or network device in the various method embodiments of the present application are executed.

[0250] In addition, the present application further provides a chip, the chip including a processor. A memory for storing a computer program is provided independently of the chip, and the processor is configured to execute the computer program stored in the memory, so that the operations and / or processing performed by the intermediate node or network device in any method embodiment are performed.

[0251] Furthermore, the chip may further include a communication interface. The communication interface may be an input / output interface, or an interface circuit, etc. Furthermore, the chip may further include a memory.

[0252] The present application provides a communication system, including the intermediate node and network device in the above method embodiment. In addition, the communication system may also include an AIoT device. The intermediate node is used to forward messages between the network device and the AIoT device.

[0253] In this application, a processor may be a general-purpose processor, a digital signal processor, an application-specific integrated circuit, a field-programmable gate array or other programmable logic device, a discrete gate or transistor logic device, or a discrete hardware component, and may implement or execute the methods, steps, and logic block diagrams disclosed in this application. A general-purpose processor may be a microprocessor or any conventional processor. The steps of the methods disclosed in this application may be directly executed by a hardware processor, or by a combination of hardware and software modules within the processor.

[0254] In this application, the memory may be a non-volatile memory, such as a hard disk drive (HDD) or a solid-state drive (SSD), or a volatile memory, such as a random-access memory (RAM). The memory is any other medium that can be used to carry or store desired program code in the form of instructions or data structures and can be accessed by a computer, but is not limited thereto. The memory in this application may also be a circuit or any other device that can implement a storage function, for storing program instructions and / or data.

[0255] 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. Professional and technical personnel 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 application.

[0256] 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.

[0257] In the several embodiments provided in this application, it should be understood that the disclosed systems, devices and methods can be implemented in other ways. For example, the device embodiments described above are merely schematic. For example, the division of the units is merely a logical function division. In actual implementation, there may be other division methods, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.

[0258] The units described as separate components may or may not be physically separate, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed across multiple network units. Some or all of these units may be selected to achieve the purpose of this embodiment according to actual needs.

[0259] In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.

[0260] If the functions are implemented in the form of software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application, or the part that contributes to the prior art, or the part of the technical solution, can be embodied in the form of a software product. The computer software product is stored in a storage medium and includes several instructions for enabling a computer device (which can be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the method described in each embodiment of the present application. The aforementioned storage medium includes various media that can store program codes, such as a USB flash drive, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk.

[0261] The above description is merely a specific embodiment of the present application, but the scope of protection of the present application 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 application should be included in the scope of protection of this application. Therefore, the scope of protection of this application should be based on the scope of protection of the claims.

Claims

1. A communication method, characterized in that: include: Determine a first time-frequency resource corresponding to the AIoT signal, where the first time-frequency resource and a second time-frequency resource for uplink (UL) transmission are located in the same uplink frequency band, and the first time-frequency resource and the second time-frequency resource overlap or partially overlap in the time domain; According to a first condition satisfied by the AIoT signal and the UL transmission, performing transmission processing corresponding to the first condition on the AIoT signal and the UL transmission, the transmission processing corresponding to the first condition including one of the following: Canceling the transmission of the AIoT signal or partially cancelling the transmission of the AIoT signal; canceling the UL transmission or canceling part of the UL transmission; Reducing the transmission power of the AIoT signal; reducing the transmit power of the UL transmission; or, Delay sending of the AIoT signal.

2. The method according to claim 1, characterized in that The first time-frequency resource is used to send the AIoT signal; or, The first time-frequency resource is used to receive the AIoT signal from a first device, where the first device satisfies one or more of the following conditions: Supports reflection communication, has the ability to amplify uplink (UL) signals and / or downlink (DL) signals, and generates UL transmission.

3. The method according to claim 2, characterized in that The first device satisfies one of the following conditions: The first device supports reflection communication and does not have the ability to amplify uplink (UL) signals or downlink (DL) signals; The first device supports reflection communication and has the ability to amplify UL signals or DL ​​signals; The first device supports generating UL transmission and has the ability to amplify UL signals or DL ​​signals; or The first device supports reflection communication and generates UL transmission, and has the ability to amplify UL signals or DL ​​signals.

4. The method according to any one of claims 1 to 3, characterized in that The first condition and the transmission process corresponding to the first condition include any one of the following: Condition 1: The UL transmission is used to carry a physical random access channel PRACH, a physical uplink control signal PUCCH, or a physical uplink shared channel PUSCH. The transmission processing corresponding to Condition 1 includes: canceling the sending of the AIoT signal; Condition 2: The UL transmission is used to carry the transmission of a physical random access channel PRACH, a physical uplink control signal PUCCH, or a physical uplink shared channel PUSCH, and the first time-frequency resource and the second time-frequency resource partially overlap in the time domain; the transmission processing corresponding to Condition 2 includes: canceling the transmission of the AIoT signal on the overlapping time domain resources; Condition 3: The UL transmission is used to carry a physical uplink shared channel (PUSCH) of the first priority; the transmission processing corresponding to Condition 3 includes: canceling the transmission of the AIoT signal; Condition 4: The UL transmission is used to carry a physical uplink shared channel (PUSCH) of type B, and the time domain resources used to carry the PUSCH of type B include symbols that are abandoned due to failure to meet actual repetition requirements; the transmission processing corresponding to Condition 4 includes: sending the AIoT signal on the symbols that are abandoned; Condition 5: The UL transmission is used to carry TBoMS transmission, and one or more time slots of the first time-frequency resource and the second time-frequency resource overlap. The transmission processing corresponding to Condition 5 includes: canceling the transmission of the AIoT signal in the overlapping time slots; Condition 6: The second time-frequency resource includes a UL symbol indicated by a slot format indicator SFI, and the first time-frequency resource coincides with the UL symbol indicated by the SFI; the transmission processing corresponding to Condition 6 includes: canceling the transmission of the AIoT signal on the UL symbol; Alternatively, condition 6: the second time-frequency resource includes a flexible symbol indicated by an SFI, and the first time-frequency resource overlaps with the flexible symbol indicated by the SFI; the transmission processing corresponding to condition 6 includes: continuing to send the AIoT signal on the overlapping flexible symbol; Condition 7: The UL transmission is used to carry a physical uplink shared channel PUSCH that enables joint channel estimation; the transmission processing corresponding to the condition 7 includes: canceling the transmission of the AIoT signal; or, Condition 8: A first indication message is received from a network device, and the first indication message is used to indicate the cancellation of sending the AIoT signal; the transmission processing corresponding to Condition 8 includes: canceling the sending of the AIoT signal; or, the first indication message is used to indicate the cancellation of sending the AIoT signal and the UL transmission; the transmission processing corresponding to Condition 8 includes: canceling the sending of the AIoT signal and the UL transmission.

5. The method according to claim 4, characterized in that If canceling the transmission of part of the AIoT signal is canceling the transmission of the AIoT signal in the overlapping time domain part, and the number of symbols in the remaining time domain part other than the overlapping time domain part in the first time-frequency resource is lower than a threshold value, the method further includes: Cancel the sending of the AIoT signal in the remaining time domain portion.

6. The method according to claim 5, characterized in that The correspondence between the threshold of the number of symbols of the remaining time domain part and the subcarrier spacing satisfies one or more rows in Table 1: Table 1 7. The method according to any one of claims 1 to 3, characterized in that The first condition and the transmission process corresponding to the first condition include any one of the following: Condition 9: The UL transmission is used to carry a physical uplink shared channel PUSCH of type B, and the PUSCH of type B includes multiple actual repetitions. If the first time-frequency resource overlaps with some of the multiple actual repetitions in the time domain, and the overlapping time domain resources include the starting symbols of the multiple actual repetitions; the transmission processing corresponding to condition 9 includes: canceling the actual repetition (actual repetition) of the PUSCH of type B that sends the overlapping time domain resources; or, Condition 9: The UL transmission is used to carry a PUSCH of type B, and the PUSCH of type B includes multiple actual repetitions. If the first time-frequency resource overlaps with some of the multiple actual repetitions in the time domain, and the overlapping time domain resources do not include the starting symbol of the multiple actual repetitions; the transmission processing corresponding to Condition 9 includes: canceling the transmission of the actual repetitions on the overlapping time domain resources; Condition 10: The UL transmission is used to carry a sounding reference signal SRS, and the first time-frequency resource and the second time-frequency resource partially overlap in the time domain; the transmission processing corresponding to Condition 10 includes: canceling the transmission of the SRS on the overlapping time domain resources.

8. The method according to any one of claims 1 to 3, characterized in that The first condition and the transmission processing corresponding to the first condition include: Condition 11: The UL transmission is used to carry the physical uplink shared signal PUSCH that enables joint channel estimation; the transmission processing corresponding to Condition 11 includes: keeping the transmission power of the UL transmission unchanged to send the UL transmission, and the remaining power of the first device is used to send the AIoT signal.

9. The method according to any one of claims 1 to 3, characterized in that The first condition and the transmission processing corresponding to the first condition include: Condition 12: The UL transmission is used to carry the sounding reference signal SRS or the PUSCH of the second priority; the transmission processing corresponding to Condition 12 includes: keeping the transmission power of the AIoT signal unchanged to send the AIoT signal, and using the remaining power of the first device for the UL transmission.

10. The method according to any one of claims 1 to 3, characterized in that The first time-frequency resource and the second time-frequency resource are the same frequency domain resource; The first condition and the transmission processing corresponding to the first condition include: Condition 13: The UL transmission is a grant-free transmission or a scheduling request SR transmission, and the second time-frequency resource includes a time domain resource without a transmission requirement for the UL transmission; the transmission processing corresponding to Condition 13 includes: sending the AIoT signal on the time domain resource without the transmission requirement; or, Condition 13: The UL transmission is an unauthorized transmission or an SR transmission, and there is a transmission requirement for the UL transmission on the time domain resources included in the second time-frequency resources; the transmission processing corresponding to Condition 13 includes: canceling the sending of the AIoT signal.

11. The method according to any one of claims 1 to 3, characterized in that The first condition and the transmission processing corresponding to the first condition include: Condition 14: The second time-frequency resource includes a flexible time domain unit indicated by a time slot format indicator SFI, and the first time domain resource overlaps with one or more of the flexible time domain units; the transmission processing corresponding to Condition 14 includes: canceling the UL transmission on the overlapping flexible time domain units.

12. The method according to any one of claims 1 to 3, characterized in that The canceling of sending the AIoT signal includes canceling sending the AIoT signal when the priority of the AIoT signal is lower than the priority of the UL transmission.

13. The method according to any one of claims 1 to 3, characterized in that If the transmission processing corresponding to the first condition is to delay sending the AIoT signal; the method further includes: An indication message is sent to the first device, where the indication message is used to indicate cancellation of sending the AIoT signal on the overlapping time domain resources, or the indication message is used to indicate a third time domain resource, where the third time domain resource is used for sending the AIoT signal, and the third time domain resource has no intersection with the time domain resources of the first time-frequency resource.

14. The method according to any one of claims 1 to 3, characterized in that The AIoT signal includes a carrier signal.

15. The method according to claim 13, characterized in that The AIoT signal includes AIoT signaling, and the AIoT signaling includes one or more of the following: A selection signal for initiating an inventory count; A query signal used to instruct the first device to feedback identification information; A positive acknowledgement ACK signal is used to indicate that the identification information of the first device is correctly received.

16. A communication method, characterized in that: include: Determine a first time-frequency resource for sending an AIoT signal to a first device, where the first time-frequency resource and the second time-frequency resource are located in the same uplink frequency band, and the second time-frequency resource is used to receive uplink UL transmissions from other terminal devices, wherein the first time-frequency resource and the second time-frequency resource overlap or partially overlap in the time domain; the first device satisfies one or more of the following: supports reflection communication, has the ability to amplify uplink UL signals or downlink DL signals, and generates UL transmissions; According to the conditions satisfied by the AIoT signal and the UL transmission, cancel sending the AIoT signal or cancel the UL transmission.

17. The method according to claim 16, characterized in that If the UL transmission is canceled, the method further includes: A first indication signal is sent to the terminal device corresponding to the UL transmission, where the first indication signal is used to indicate cancellation of the UL transmission.

18. The method according to claim 16, characterized in that If the UL transmission is canceled, the method further includes: A second indication signal is sent to an auxiliary terminal device of the network device, where the second indication signal is used to indicate cancellation of sending the AIoT signal.

19. The method according to claim 18, characterized in that The second indication signal is used to indicate the cancellation of the sending of the AIoT signal within a period of time.

20. A communication device, characterized in that: include: a processing module, configured to determine a first time-frequency resource corresponding to the AIoT signal, where the first time-frequency resource and a second time-frequency resource for uplink (UL) transmission are located in the same uplink frequency band, and the first time-frequency resource and the second time-frequency resource overlap or partially overlap in the time domain; and, determining a first condition satisfied by the AIoT signal and the UL transmission; a communication module, configured to perform transmission processing corresponding to the first condition on the AIoT signal and the UL transmission according to an instruction of the processing module, where the transmission processing corresponding to the first condition includes one of the following: Canceling the transmission of the AIoT signal or partially cancelling the transmission of the AIoT signal; canceling the UL transmission or canceling part of the UL transmission; Reducing the transmission power of the AIoT signal; reducing the transmit power of the UL transmission; or, Delay sending of the AIoT signal.

21. A communication device, characterized in that: include: A processing module, configured to determine a first time-frequency resource for sending an AIoT signal to a first device, where the first time-frequency resource and a second time-frequency resource are located in the same uplink frequency band, and the second time-frequency resource is used to receive uplink (UL) transmissions from other terminal devices, wherein the first time-frequency resource and the second time-frequency resource overlap or partially overlap in the time domain; and the first device satisfies one or more of the following: supporting reflection communication, having the ability to amplify uplink (UL) signals or downlink (DL) signals, and generating UL transmissions; and, determining conditions satisfied by the AIoT signal and the UL transmission; A communication module is used to cancel sending the AIoT signal or cancel the UL transmission according to the instruction of the processing module.

22. A communication device, characterized in that: The device comprises a processor coupled to a memory, wherein the processor is configured to execute a computer program or instruction stored in the memory, so as to enable the communication device to perform the method according to any one of claims 1 to 19.

23. A chip, characterized in that: It includes a circuit and a communication interface, the communication interface is used to receive information and / or data to be processed, and send the information and / or data to be processed to the circuit, the circuit is used to process the information and / or data to be processed, so that the communication device installed with the chip executes the method as described in any one of claims 1 to 19.

24. A computer-readable storage medium, characterized in that The computer-readable storage medium stores computer instructions. When the computer instructions are executed on a computer, the method according to any one of claims 1 to 19 is implemented.

25. A computer program product, characterized in that The computer program product comprises computer program codes or instructions, and when the computer program codes or instructions are run on a computer, the method according to any one of claims 1 to 19 is implemented.

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