Communication method, device, communication system, storage medium, and program product

Abstract

The present disclosure relates to a communication method, a device, a communication system, a storage medium and a program product. The communication method comprises: determining, by a first device, an interference signal, the interference signal being from a second device, the second device being configured to provide a continuous electromagnetic wave (CW) for an ambient Internet of Things (A-IoT) device. The present disclosure avoids interference of the interference signal to other signals.

Description

Communication method, device, communication system, storage medium and program product TECHNICAL FIELD

[0001] The present disclosure relates to the technical field of communication, and particularly relates to a communication method, device, communication system, storage medium and program product. BACKGROUND

[0002] Ambient Internet Of Things (A-IoT) is a brand-new Internet of Things technology. At present, some A-IoT devices have a peak power consumption of 1 microwatt (μw) or several hundred μw, have energy storage capability, but cannot generate or amplify signals independently, and use a backscattering working mode. For example, when sending information, the A-IoT device needs to be provided with a continuous wave (CW) for backscattering by an external device, and the device providing the CW for the A-IoT device can be referred to as a CW node.

[0003] SUMMARY

[0004] The embodiments of the present disclosure provide a communication method, device, communication system, storage medium and program product.

[0005] According to a first aspect of the embodiments of the present disclosure, a communication method is provided, and the method comprises: determining, by a first device, an interference signal, the interference signal being from a second device, the second device being configured to provide a continuous wave (CW) for an Ambient Internet Of Things (A-IoT) device.

[0006] According to a second aspect of the embodiments of the present disclosure, a communication method is provided, and the method comprises: transmitting, by a second device, a reference signal to a first device, the reference signal being used to estimate a channel between the first device and the second device, the channel being used to determine an interference signal together with parameter information of a CW, the second device being configured to provide the CW for an A-IoT device.

[0007] According to a third aspect of the embodiments of the present disclosure, a communication method is provided, and the method comprises: receiving, by a first device, a reference signal transmitted by a second device, and estimating, by the first device, a channel between the first device and the second device according to the reference signal; determining, by the first device, the interference signal based on the channel and parameter information of a CW, the interference signal being from the second device, the second device being configured to provide the CW for an Ambient Internet Of Things (A-IoT) device.

[0008] According to a fourth aspect of the embodiments of the present disclosure, a first device is provided, and the device comprises: a processing module configured to determine an interference signal, the interference signal being from a second device, the second device being configured to provide a continuous wave (CW) for an Ambient Internet Of Things (A-IoT) device.

[0009] According to a fifth aspect of the embodiments of the present disclosure, a second device is provided, comprising: a transceiver configured to transmit a reference signal to a first device, the reference signal being used to estimate a channel between the first device and the second device, the channel being used to determine an interference signal together with parameter information of a CW, and the second device being configured to provide the CW for an A-IoT device.

[0010] According to a sixth aspect of the embodiments of the present disclosure, a first device is provided, comprising: one or more processors; and wherein the first device is configured to perform the first aspect and any one of the communication methods in the first aspect.

[0011] According to a seventh aspect of the embodiments of the present disclosure, a second device is provided, comprising: one or more processors; and wherein the second device is configured to perform the second aspect and any one of the communication methods in the second aspect.

[0012] According to an eighth aspect of the embodiments of the present disclosure, a communication system is provided, comprising a first device and a second device, wherein the first device is configured to implement the first aspect and any one of the communication methods in the first aspect, and the second device is configured to implement the second aspect and any one of the communication methods in the second aspect.

[0013] According to a ninth aspect of the embodiments of the present disclosure, a storage medium is provided, which stores instructions, when the instructions are executed on a communication device, causing the communication device to perform the communication method in the first aspect and any one of the communication methods in the first aspect or the second aspect and any one of the communication methods in the second aspect.

[0014] The present disclosure determines an interference signal by the first device, the interference signal coming from the second device, and the second device is a device providing a CW for the first device, and the first device determines the interference signal so as to eliminate the interference signal subsequently, avoiding interference of the interference signal on other signals. BRIEF DESCRIPTION OF DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure, the following describes the drawings required for the embodiments, and the following drawings are only some embodiments of the present disclosure, and do not specifically limit the protection scope of the present disclosure.

[0016] FIG. 1a is a schematic diagram of a deployment structure of an A-IoT device.

[0017] FIG. 1b is a schematic diagram of a deployment structure of an A-IoT device.

[0018] FIG. 1c is a schematic diagram of a reader receiving an interference signal and a D2R signal.

[0019] FIG. 1d is a schematic diagram of a communication system architecture according to an embodiment of the present disclosure.

[0020] FIG. 2 is an interaction diagram of a communication method according to an embodiment of the present disclosure.

[0021] FIG. 3a is a flowchart of a communication method according to an embodiment of the present disclosure.

[0022] FIG. 3b is a flowchart of a communication method according to an embodiment of the present disclosure.

[0023] FIG. 4 is a flowchart of a communication method according to an embodiment of the present disclosure.

[0024] FIG. 5 is an interaction diagram of a communication method according to an embodiment of the present disclosure.

[0025] FIG. 6a is a structural diagram of a first device according to an embodiment of the present disclosure.

[0026] FIG. 6b is a structural diagram of a second device according to an embodiment of the present disclosure.

[0027] FIG. 7a is a structural diagram of a communication device according to an embodiment of the present disclosure.

[0028] FIG. 7b is a structural diagram of a chip according to an embodiment of the present disclosure. DETAILED DESCRIPTION

[0029] Embodiments of the present disclosure provide a communication method, a device, a communication system, a storage medium and a program product.

[0030] In a first aspect, embodiments of the present disclosure provide a communication method, which comprises: determining, by a first device, an interference signal, the interference signal being from a second device, the second device being configured to provide a continuous electromagnetic wave (CW) for an ambient Internet of Things (A-IoT) device.

[0031] In some optional embodiments of the first aspect, the first device determines the interference signal in the following manner: the first device receives a reference signal sent by the second device, and estimates a channel between the first device and the second device according to the reference signal; the first device determines the interference signal based on the channel and parameter information of the CW; wherein the parameter information of the CW is determined by the first device; or the parameter information of the CW is determined by the second device and indicated to the first device.

[0032] In some optional embodiments of the first aspect, the reference signal comprises at least one of the following: a channel state information reference signal (CSI-RS); a sounding reference signal (SRS); an uplink demodulation reference signal (UL DMRS); a downlink demodulation reference signal (DL DMRS); a newly designed reference signal.

[0033] In some possible implementation of the first aspect, the newly designed reference signal comprises at least one of: a pseudo-random sequence; a maximum length linear feedback shift register sequence; a non-binary unit amplitude sequence.

[0034] In some possible implementation of the first aspect, the method further comprises: receiving, by the first device, first information sent by the second device, the first information being used to indicate the parameter information.

[0035] In some possible implementation of the first aspect, the method further comprises: sending, by the first device, second information to the second device, the second information being used to indicate time-frequency resources of the reference signal; or, determining, by the first device, the time-frequency resources of the reference signal based on preconfigured time-frequency resources; or, determining, by the first device, the time-frequency resources of the reference signal based on predefined time-frequency resources.

[0036] In some possible implementation of the first aspect, the first device determines the interference signal in the following manner: the first device determines a signal received under a condition as the interference signal.

[0037] In some possible implementation of the first aspect, the condition comprises at least one of: a current time is before a time when the first device sends third information, and the current time is a time when the second device sends a CW, the third information being used to inventory the A-IoT device; a current time is after a time when the first device sends the third information, and before a time when the A-IoT device is about to send fourth information, and the current time is a time when the second device sends a CW, the fourth information being response information of the third information; all A-IoT devices within a coverage range of the first device are in a charging state, and the current time is a time when the second device sends a CW; all A-IoT devices within the coverage range of the first device are in an off state, and the current time is a time when the second device sends a CW.

[0038] In some possible implementation of the first aspect, the time when the A-IoT device is about to send the fourth information is a time after a first time duration from a time when the third information is sent; wherein the first time duration is a shortest time duration required by the A-IoT device to prepare for sending the fourth information.

[0039] In some optional embodiments of the first aspect, the method further includes: if the current time is after the time when the first device sends the fifth information, and before the time when the A-IoT device is about to end the charging, determining that all A-IoT devices in the coverage range of the first device are in the charging state; wherein the fifth information is used to instruct all A-IoT devices in the coverage range of the first device to perform charging.

[0040] In some optional embodiments of the first aspect, the time when the A-IoT device is about to end the charging is: a time after a second time length from the time when the fifth information is sent; wherein the second time length is the shortest time length required by the A-IoT device for charging.

[0041] In a second aspect, a communication method is provided, the method including: a second device sending a reference signal to a first device, the reference signal being used to estimate a channel between the first device and the second device, the channel being used to determine an interference signal together with parameter information of a CW, the second device being used to provide the CW for an A-IoT device.

[0042] In some optional embodiments of the second aspect, the reference signal includes at least one of: a channel state information reference signal (CSI-RS); a sounding reference signal (SRS); an uplink demodulation reference signal (UL DMRS); a downlink demodulation reference signal (DL DMRS); a newly designed reference signal.

[0043] In some optional embodiments of the second aspect, the newly designed reference signal includes at least one of: a pseudo-random sequence; a maximum linear feedback shift register sequence; a non-binary unit amplitude sequence.

[0044] In some optional embodiments of the second aspect, the method further includes: the second device sending first information to the first device, the first information being used to indicate the parameter information.

[0045] In some optional embodiments of the second aspect, the method further includes: the second device receiving second information sent by the first device, the second information being used to indicate time-frequency resources of the reference signal; or, the second device determining the time-frequency resources of the reference signal based on preconfigured time-frequency resources; or, the second device determining the time-frequency resources of the reference signal based on pre-defined time-frequency resources.

[0046] In a third aspect, a communication method is provided. The method comprises: receiving, by a first device, a reference signal transmitted by a second device, and estimating, by the first device, a channel between the first device and the second device based on the reference signal; and determining, by the first device, the interference signal based on the channel and parameter information of the CW, wherein the interference signal is from the second device configured to provide a continuous electromagnetic wave (CW) for an ambient Internet of Things (A-IoT) device.

[0047] In a fourth aspect, a first device is provided. The first device comprises a processing module configured to determine an interference signal from a second device configured to provide a continuous electromagnetic wave (CW) for an ambient Internet of Things (A-IoT) device.

[0048] In some embodiments of the fourth aspect, the processing module is configured to determine the interference signal in the following manner: receiving, by the first device, a reference signal transmitted by the second device, and estimating, by the first device, a channel between the first device and the second device based on the reference signal; and determining, by the first device, the interference signal based on the channel and parameter information of the CW, wherein the parameter information of the CW is determined by the first device, or the parameter information of the CW is determined by the second device and indicated to the first device.

[0049] In some embodiments of the fourth aspect, the reference signal comprises at least one of: a channel state information reference signal (CSI-RS); a sounding reference signal (SRS); an uplink demodulation reference signal (UL DMRS); a downlink demodulation reference signal (DL DMRS); or a newly designed reference signal.

[0050] In some embodiments of the fourth aspect, the newly designed reference signal comprises at least one of: a pseudo-random sequence; a maximum length linear feedback shift register sequence; or a non-binary unit amplitude sequence.

[0051] In some embodiments of the fourth aspect, the first device further comprises a transceiver module configured to receive first information transmitted by the second device, wherein the first information is used to indicate the parameter information.

[0052] In some embodiments of the fourth aspect, the transceiver module is further configured to: transmit, by the first device, second information to the second device, wherein the second information is used to indicate time-frequency resources of the reference signal; or determine, by the first device, the time-frequency resources of the reference signal based on pre-configured time-frequency resources; or determine, by the first device, the time-frequency resources of the reference signal based on pre-defined time-frequency resources.

[0053] In some optional embodiments of the fourth aspect, the processing module determines the interference signal in the following manner: the signal received by the first device in a case where the first device meets a condition is determined as the interference signal.

[0054] In some optional embodiments of the fourth aspect, the condition comprises at least one of the following: a current time is before a time when the first device transmits third information, and the current time is a time when the second device transmits a CW, the third information being used for inventorying the A-IoT devices; the current time is after the time when the first device transmits the third information, and before a time when the A-IoT device is about to transmit fourth information, and the current time is the time when the second device transmits the CW, the fourth information being response information of the third information; all A-IoT devices within a coverage range of the first device are in a charging state, and the current time is the time when the second device transmits the CW; all A-IoT devices within the coverage range of the first device are in an off state, and the current time is the time when the second device transmits the CW.

[0055] In some optional embodiments of the fourth aspect, the time when the A-IoT device is about to transmit the fourth information is a time after a first time length from a time when the third information is transmitted; the first time length is a shortest time length required by the A-IoT device for preparation of transmission of the fourth information.

[0056] In some optional embodiments of the fourth aspect, the processing module is further configured to: if a current time is after a time when the first device transmits fifth information, and before a time when the A-IoT device is about to end charging, determine that all A-IoT devices within the coverage range of the first device are in a charging state; the fifth information is used to instruct all A-IoT devices within the coverage range of the first device to perform charging.

[0057] In some optional embodiments of the fourth aspect, the time when the A-IoT device is about to end charging is a time after a second time length from a time when the fifth information is transmitted; the second time length is a shortest time length required by the A-IoT device for charging.

[0058] In a fifth aspect, a second device is provided, comprising: a transceiver module configured to transmit a reference signal to a first device, the reference signal being used to estimate a channel between the first device and the second device, the channel being used to determine an interference signal together with parameter information of a CW, the second device being configured to provide the CW for A-IoT devices.

[0059] In some possible implementation of the fifth aspect, the reference signal comprises at least one of: a channel state information reference signal (CSI-RS); a sounding reference signal (SRS); an uplink demodulation reference signal (UL DMRS); a downlink demodulation reference signal (DL DMRS); a newly designed reference signal.

[0060] In some possible implementation of the fifth aspect, the newly designed reference signal comprises at least one of: a pseudo-random sequence; a maximum length linear feedback shift register sequence; a non-binary unit amplitude sequence.

[0061] In some possible implementation of the fifth aspect, the transceiver is further configured to: send, to the first device, first information, where the first information is used to indicate the parameter information.

[0062] In some possible implementation of the fifth aspect, the transceiver is further configured to: receive second information sent by the first device, where the second information is used to indicate time-frequency resources of the reference signal; or determine time-frequency resources of the reference signal based on preconfigured time-frequency resources; or determine time-frequency resources of the reference signal based on predefined time-frequency resources.

[0063] In a sixth aspect, a first device is provided, including: one or more processors; and wherein the processor is configured to execute the first aspect and any one of the communication methods in the first aspect.

[0064] In a seventh aspect, a second device is provided, including: one or more processors; and wherein the processor is configured to execute the second aspect and any one of the communication methods in the second aspect.

[0065] In an eighth aspect, a communication system is provided, including a first device and a second device, where the first device is configured to implement the first aspect and any one of the communication methods in the first aspect, and the second device is configured to implement the second aspect and any one of the communication methods in the second aspect.

[0066] In a ninth aspect, a storage medium is provided, which stores instructions, and when the instructions are executed on a communication device, the communication device executes the communication method in the first aspect and any one of the communication methods in the first aspect or the second aspect and any one of the communication methods in the second aspect.

[0067] In a tenth aspect, a program product is provided, and when the program product is executed on a communication device, the communication device executes the method described in the optional implementation of the first aspect or the second aspect.

[0068] In an eleventh aspect, a computer program is provided, and when the computer program is executed on a computer, the computer executes the method described in the optional implementation of the first aspect or the second aspect.

[0069] In a twelfth aspect, an embodiment of the present disclosure provides a chip or chip system. The chip or chip system includes processing circuitry configured to perform the method described in the first aspect or the second aspect or the optional implementation of the first aspect or the second aspect.

[0070] It can be understood that the first device, the second device, the terminal, the access network device, the first network element, the other network element, the core network device, the communication system, the storage medium, the program product, the computer program, the chip or the chip system involved in the embodiments of the present disclosure are used to execute the method proposed in the embodiments of the present disclosure. Therefore, the beneficial effects that can be achieved are referred to the beneficial effects in the corresponding method, which will not be described here.

[0071] The embodiments of the present disclosure propose a communication method, a device, a communication system, a storage medium and a program product. In some embodiments, the terms of communication method and information processing method can be replaced with each other, the terms of communication device and information processing device can be replaced with each other, and the terms of information processing system and communication system can be replaced with each other.

[0072] The embodiments of the present disclosure are not exhaustive, but only illustrate some embodiments, and are not specific limitations on the protection scope of the present disclosure. In the case of no contradiction, each step in an embodiment can be implemented as an independent embodiment, and the steps can be combined arbitrarily, for example, the scheme after removing some steps in an embodiment can also be implemented as an independent embodiment, and the order of the steps in an embodiment can be exchanged arbitrarily, in addition, the optional implementation in an embodiment can be combined arbitrarily; in addition, the embodiments can be combined arbitrarily, for example, the steps of different embodiments or some or all steps of different embodiments can be combined arbitrarily, an embodiment can be combined with the optional implementation of other embodiments.

[0073] In the embodiments of the present disclosure, the terms and / or descriptions between the embodiments are consistent and can be referred to each other if there is no special description and logical conflict, and the technical environments in different embodiments can be combined to form a new embodiment according to their inherent logical relationship.

[0074] The terms used in the embodiments of the present disclosure are only for the purpose of describing specific embodiments, and not as a limitation on the present disclosure.

[0075] In the embodiments of the present disclosure, an element expressed in singular form, such as "a", "an", "the", "said", "the aforementioned", "the foregoing", "this", and the like, unless otherwise specified, can represent "one and only one", or can represent "one or more", "at least one", and the like. For example, in the case of using an article such as "a", "an", "the" in English, the noun after the article can be understood as a singular expression, or can be understood as a plural expression.

[0076] In the embodiments of the present disclosure, "plurality" refers to two or more.

[0077] In some embodiments, the terms "at least one of", "one or more", "a plurality of", "multiple", and the like can be replaced with each other.

[0078] In some embodiments, the description modes such as "at least one of A, B", "A and / or B", "A in one case and B in another case", "in response to a case A, in response to a case B", and the like can include the following technical solutions according to the case: A is executed in some embodiments (A is executed regardless of B); B is executed in some embodiments (B is executed regardless of A); A and B are selectively executed in some embodiments (A and B are selected to be executed); A and B are executed in some embodiments (A and B are both executed). When there are more branches such as A, B, C, and the like, the above is similar.

[0079] In some embodiments, the description modes such as "A or B" and the like can include the following technical solutions according to the case: A is executed in some embodiments (A is executed regardless of B); B is executed in some embodiments (B is executed regardless of A); A and B are selectively executed in some embodiments (A and B are selected to be executed). When there are more branches such as A, B, C, and the like, the above is similar.

[0080] The prefix words of "first", "second" and the like in the embodiments of the present disclosure are merely used to distinguish different description objects, and do not constitute limitation on the position, order, priority, quantity or content of the description objects. The description objects are described in the claims or embodiments, and should not be construed as redundant limitation because of the use of the prefix words. For example, the description object is "field", and the ordinal words before "field" in "first field" and "second field" do not limit the position or order between "fields", and "first" and "second" do not limit whether the "fields" modified thereby are in the same message or not, nor limit the order of "first field" and "second field". For another example, the description object is "level", and the ordinal words before "level" in "first level" and "second level" do not limit the priority between "levels". For another example, the quantity of the description object is not limited by the ordinal words, and can be one or more. For example, "first device", wherein the quantity of "device" can be one or more. In addition, the objects modified by different prefix words can be the same or different, for example, the description object is "device", and "first device" and "second device" can be the same device or different devices, and the types thereof can be the same or different. For another example, the description object is "information", and "first information" and "second information" can be the same information or different information, and the contents thereof can be the same or different.

[0081] In some embodiments, "including A", "containing A", "for indicating A", "carrying A" can be interpreted as directly carrying A, or indirectly indicating A.

[0082] In some embodiments, the terms of "in response to", "in response to determining", "in the case of", "when", "when", "if", "if" and the like can be replaced with each other.

[0083] In some embodiments, the terms of "greater than", "greater than or equal to", "not less than", "more than", "more than or equal to", "not less than", "higher than", "higher than or equal to", "not lower than", "above" and the like can be replaced with each other, and the terms of "less than", "less than or equal to", "not greater than", "less than", "less than or equal to", "not more than", "lower than", "lower than or equal to", "not higher than", "below" and the like can be replaced with each other.

[0084] In some embodiments, the apparatuses and devices can be interpreted as physical, as well as virtual, whose names are not limited to the names described in the embodiments, and in some cases can also be understood as "equipment", "device", "circuit", "network element", "node", "function", "unit", "section", "system", "network", "chip", "chip system", "entity", "subject", etc.

[0085] In some embodiments, "network" can be interpreted as an apparatus contained in the network, such as an access network device, a core network device, etc.

[0086] In some embodiments, "access network device (AN device)" can also be referred to as "radio access network device (RAN device)", "base station (BS)", "radio base station", "fixed station", and in some embodiments can also be understood as "node", "access point", "transmission point (TP)", "reception point (RP)", "transmission / reception point (TRP)", "panel", "antenna panel", "antenna array", "cell", "macro cell", "small cell", "femto cell", "pico cell", "sector", "cell group", "serving cell", "carrier", "component carrier", "bandwidth part (BWP)", etc.

[0087] In some embodiments, a "terminal" or "terminal device" can be referred to as a "user equipment" (UE), a "user terminal," a "mobile station" (MS), a "mobile terminal" (MT), a subscriber station, a mobile unit, a subscriber unit, a wireless unit, a remote unit, a mobile device, a wireless device, a wireless communication device, a remote device, a mobile subscriber station, an access terminal, a mobile terminal, a wireless terminal, a remote terminal, a handset, a user agent, a mobile client, a client, etc.

[0088] In some embodiments, data, information, etc. can be obtained in compliance with laws and regulations of the country in which the location is situated.

[0089] In some embodiments, data, information, etc. can be obtained after obtaining consent from a user.

[0090] In addition, each element, each row, or each column in the table of the embodiments of the present disclosure can be implemented as an independent embodiment, and any combination of any element, any row, or any column can also be implemented as an independent embodiment.

[0091] Ambient Internet Of Things (A-IoT) is a brand-new Internet of Things technology. Compared with traditional Internet of Things technology, a significant feature is that the number of A-IoT terminals that can access the network is large in scale, and the structure is simple, the hardware cost and maintenance cost are low, and the power consumption is low, which can be used for a long time without replacing the battery. Among them, the A-IoT terminal can also be referred to as A-IoT user equipment (A-IoT UE), A-IoT device (A-IoT device), A-IoT tag (A-IoT Tag), etc.

[0092] A-IoT device can be applied to the scenario of inventory of large-scale goods, i.e. A-IoT device reports Evolved Packet Core (EPC) code to network device or intermediate node or UE, can be applied to the scenario of smart home, environmental monitoring and other sensing, i.e. meet certain trigger conditions, report some data, can be applied to the positioning scenario, to find goods or indoor positioning in shopping malls. It can also be used in the command scenario, for the command sent by the network device, a certain response is made.

[0093] A-IoT device can be divided into three types:

[0094] Device 1: peak power consumption is 1 μw, has energy storage, cannot independently generate / amplify signals, for example, uses backscattering working mode. Does not have the ability of DL and / or UL signal amplification.

[0095] Device 2a: peak power consumption is several hundred μw, has energy storage capability, cannot independently generate signals, for example, uses backscattering working mode. The stored energy can be used for downlink (DL) and / or uplink (UL) signal amplification.

[0096] Device 2b: peak power consumption is several hundred μw, has energy storage capability, can independently generate signals, for example, has an active signal transmitting radio frequency (RF) module.

[0097] Device 2c: has the ability of active information transmission and backscattering.

[0098] Among them, device 1, 2a can only use the working mode of backscattering, cannot actively send signals, and when it needs to send information, the outside world provides electromagnetic waves (continuous wave, CW) for backscattering, that is, works based on backscattering (backscatter). For A-IoT devices using backscattering mode, A-IoT devices need an energy source (node) that provides continuous electromagnetic waves (continuous wave, CW) while transmitting data, that is, a continuous electromagnetic wave energy source (CW node). Provide electromagnetic waves for reflection. CW is generally constant in amplitude. The CW node can be a separate node, or it can be a network / intermediate node that communicates with the A-IoT device. The intermediate node is, for example, a UE. The A-IoT device reflects the received CW, loads the signaling / data to be transmitted onto the reflected wave and sends it out. The reflected wave and the CW are the same frequency or have a certain frequency offset. For example, the A-IoT device receives the CW, activates the internal receiving processing module to start working, encodes and modulates the signaling / data that the A-IoT device needs to upload. At the same time, the CW also plays the role of charging the A-IoT device.

[0099] In the communication system where the A-IoT device is located, there can be nodes such as network devices, terminals, intermediate nodes, and auxiliary nodes. Among them, the intermediate node is a node between the A-IoT device and the network device, which can be a relay, an integrated access and backhaul node (IAB node), a UE, a signal repeater (Repeater)

[0100] Currently, A-IoT devices support the following two deployment structures:

[0101] (1): A-IoT devices and networks directly receive and transmit DL and UL data, as shown in Figure 1a, which is a deployment structure diagram of A-IoT devices.

[0102] (2): A-IoT devices and networks indirectly receive and transmit DL and UL data through intermediate nodes, as shown in Figure 1b, which is a deployment structure diagram of A-IoT devices.

[0103] Currently, in the system of the environmental Internet of Things, there are three types of terminal data transmission:

[0104] (1): Report data based on the needs of network devices, such as inventory.

[0105] (2): Based on A-IoT device trigger, for example, the temperature of sensor is higher than the configured threshold.

[0106] (3): Periodic data reporting. For example, periodic request from network to achieve periodic environmental Internet of Things data reporting, or based on A-IoT device self-triggering to achieve periodic environmental Internet of Things data reporting. But due to the discontinuity of power supply, it may be difficult to achieve even if difficult.

[0107] In topology 2, i.e. deployment structure (2), when the UE acts as a reader, there are two modes as follows:

[0108] (1) CW node is inside the topology, and the CW node and the reader are different nodes.

[0109] (2) CW node is outside the topology, and the CW node and the reader are not different nodes.

[0110] In this mode (2), when the CW node transmits the CW, it will interfere with the device-to-reader (D2R) signal received by the reader side, thereby affecting the demodulation of the D2R signal by the reader side, causing the D2R information decoding failure by the reader side, and the uplink reliability cannot be guaranteed. Figure 1c is a schematic diagram of a reader receiving an interference signal and a D2R signal. As shown in the following figure 1c, the CW node transmits the CW to the reader side through channel fading, and the fading is CW1. At the same time, the UE also receives the D2R signal, so CW1 causes interference to the reception of the D2R signal. Then how to solve the interference of the CW transmitted by the CW node to the reception of the D2R by the reader side needs a certain solution.

[0111] In some embodiments, the CW node transmits the CW, and the CW is a sine wave, and the expression of the CW signal is CW=Asin(ωt+φ). The CW signal is faded through the path link1 between the CW node and the reader, and the residual signal at the reader side is CW1, which is the interference signal and needs to be eliminated.

[0112] Therefore, the present disclosure provides a communication method, which determines an interference signal by a first device, the interference signal is from a second device, and the second device is a device providing a CW to the first device. The first device determines the interference signal so that the interference signal can be eliminated subsequently, avoiding the interference of the interference signal to other signals.

[0113] FIG. 1d is a diagram illustrating a communication system architecture, according to an embodiment of the disclosure.

[0114] As shown in FIG. 1d, the communication system 100 includes a first device 101 and a second device 102.

[0115] In some embodiments, the first device 101 can be a terminal, for example, the first device 101 can be a terminal as a reader.

[0116] In some embodiments, the terminal, for example, includes at least one of a mobile phone, a wearable device, an Internet of Things (IoT) device, a car with communication function, a smart car, a Pad, a computer with wireless transceiver function, a virtual reality (VR) terminal device, an augmented reality (AR) terminal device, a wireless terminal device in industrial control, a wireless terminal device in self-driving, a wireless terminal device in remote medical surgery, a wireless terminal device in smart grid, a wireless terminal device in transportation safety, a wireless terminal device in smart city, a wireless terminal device in smart home, but is not limited thereto.

[0117] In some embodiments, the second device 102 can be a CW node.

[0118] In some embodiments, the communication system 100 can further include one or more A-IoT devices, and can further include a network device, which is not limited by the disclosure.

[0119] In some embodiments, the network device can include at least one of an access network device and a core network device.

[0120] In some embodiments, the access network device is, for example, a node or device that accesses a terminal to a wireless network, and can include at least one of an evolved NodeB (eNB) in a 5G communication system, a next generation eNB (ng-eNB), a next generation NodeB (gNB), a node B (NB), a home node B (HNB), a home evolved node B (HeNB), a wireless backhaul device, a radio network controller (RNC), a base station controller (BSC), a base transceiver station (BTS), a base band unit (BBU), a mobile switching center, a base station in a 6G communication system, an open base station (Open RAN), a cloud base station (Cloud RAN), a base station in other communication systems, an access node in a Wi-Fi system, but is not limited thereto.

[0121] In some embodiments, the technical solutions of the present disclosure can be applied to an Open RAN architecture, at which time the interfaces between or within the access network devices involved in the embodiments of the present disclosure can become internal interfaces of the Open RAN, and the processes and information interactions between these internal interfaces can be realized through software or programs.

[0122] In some embodiments, the access network device can be composed of a central unit (CU) and a distributed unit (DU), where the CU can also be referred to as a control unit. The CU-DU structure can split the protocol layers of the access network device, with part of the protocol layer functions being controlled by the CU, and the remaining part or all of the protocol layer functions being distributed in the DU and controlled by the CU, but is not limited thereto.

[0123] In some embodiments, the core network device can be one device including one or more network elements, or a plurality of devices or device groups including all or part of the above one or more network elements. The network element can be virtual or physical. The core network includes, for example, at least one of an evolved packet core (EPC), a 5G core network (5GCN), and a next generation core (NGC).

[0124] It can be understood that the communication system described in the embodiments of the present disclosure is for more clearly illustrating the technical solutions of the embodiments of the present disclosure, and does not constitute a limitation on the technical solutions proposed by the embodiments of the present disclosure. Those skilled in the art can know that, with the evolution of system architecture and the appearance of new business scenarios, the technical solutions proposed by the embodiments of the present disclosure are also applicable to similar technical problems.

[0125] The following embodiments of the present disclosure can be applied to the communication system 100 shown in FIG. 1d or part of the subjects, but are not limited thereto. The subjects shown in FIG. 1d are exemplary, and the communication system can include all or part of the subjects in FIG. 1d, or other subjects other than FIG. 1d. The number and form of each subject is arbitrary, each subject can be real or virtual, the connection relationship between each subject is exemplary, each subject can not be connected or can be connected, the connection can be in any way, can be direct connection or indirect connection, can be wired connection or wireless connection.

[0126] Embodiments of the present disclosure can be applied to Long Term Evolution (LTE), LTE-Advanced (LTE-A), LTE-Beyond (LTE-B), SUPER 3G, IMT-Advanced, 4th generation mobile communication system (4G), 5th generation mobile communication system (5G), 6th generation mobile communication system (6G), 5G new radio (NR), Future Radio Access (FRA), New-Radio Access Technology (RAT), New Radio (NR), New radio access (NX), Future generation radio access (FX), Global System for Mobile communications (GSM (registered trademark)), CDMA2000, Ultra Mobile Broadband (UMB), IEEE 802.11 (Wi-Fi (registered trademark)), IEEE 802.16 (WiMAX (registered trademark)), IEEE 802.20, Ultra-WideBand (UWB), Bluetooth (Bluetooth (registered trademark)), Public Land Mobile Network (PLMN) network, device-to-device (D2D) system, Machine to Machine (M2M) system, Internet of Things (IoT) system, Vehicle-to-Everything (V2X), system using other communication methods, next-generation system expanded based thereon, and the like. In addition, a plurality of systems can be combined (for example, combination of LTE or LTE-A and 5G, and the like).

[0127] FIG. 2 is an interaction diagram illustrating a communication method according to an embodiment of the present disclosure. As shown in FIG. 2, the present embodiment relates to a communication method for the communication system 100, the above-mentioned method comprising:

[0128] Optionally, the present disclosure assumes that the interference of the NR signal to the UE (as a reader) receiving the D2R signal has been eliminated by the guard band set between the NR signal and the A-IOT signal, or the NR and D2R signals are time division multiplexed (TDM) in a manner that the interference of the NR signal to the UE receiving the D2R signal is negligible. That is, the present disclosure considers only the CW that will interfere with the UE receiving the D2R signal.

[0129] Optionally, there are three cases for the transmission of the CW in this document:

[0130] Case 1: The CW is periodically transmitted, and the period is pre-configured by the network.

[0131] Case 2: The CW node transmits the CW based on the request of the device.

[0132] Case 3: The CW is always transmitted.

[0133] Among them, case 1 and case 2, the transmission of the CW is based on the control of the reader, so the reader knows when the CW node transmits the CW and when it does not.

[0134] Optionally, when the device does not receive a command from the reader, if the CW node is transmitting the CW, the device will not transmit the D2R signal, so the device will not reflect the CW, because the backscatter modulator module is after the base band logic (BB logic) module, but because there is no D2R information, the BB logic module will not work, and the backscatter modulator module will not work, so it will not reflect the CW. When the device is in the charging state, if the CW node is transmitting the CW, the device will not reflect the received CW, because when the device is charging, the power management module (PMU) of the device works to charge the device, but the backscatter modulator cannot work, and cannot achieve signal reflection through impedance switching.

[0135] Step S2101, the first device 101 transmits second information to the second device 102.

[0136] In some embodiments, the second device 102 receives the second information sent by the first device 101.

[0137] In some embodiments, the second information is used to indicate time-frequency resources of a reference signal. The reference signal is a signal sent by the second device to the first device for channel estimation by the first device. The time-frequency resources of the reference signal sent by the second device can be allocated and indicated by the first device. That is, the first device can indicate the time-frequency resources of the reference signal through the second information, so that the second device sends the reference signal to the first device on the time-frequency resources indicated by the second information. Since the time-frequency resources of the reference signal are allocated by the first device, i.e., the first device knows the time-frequency resources of the reference signal, the reference signal can be received on the time-frequency resources of the reference signal. The time-frequency resources include time domain resources and / or frequency domain resources. For example, the first information can indicate the starting position and length of the time domain resources and / or the frequency domain resources, or can indicate the position of the time domain resources and / or the frequency domain resources using a bitmap. The unit of the time domain resources can be a subframe, a time slot, a symbol, a chip, etc. The first device can receive the reference signal on the time domain resources of the reference signal. The unit of the frequency domain resources can be a resource block (RB), a subchannel, a channel, a band width (BW), etc. The first device can receive the reference signal on the frequency domain resources of the reference signal. The reference signal is a reference signal sent by the second device to the first device for channel estimation. In the present disclosure, the first device determines the interference signal by receiving the reference signal and performing channel estimation based on the reference signal. The interference signal is from the second device. For example, the second device provides a CW to the A-IoT device, so that the A-IoT device sends a signal based on the way of backscattering the CW. The CW broadcasted by the second device will reach the first device after attenuation. For the first device, the CW after attenuation is an interference signal, which will interfere with other normal signals, such as a D2R signal.

[0138] In some embodiments, the name of the second information is not limited, which can be, for example, “configuration information”, “indication information”, etc.

[0139] It can be understood that step S2101 is optional. On one hand, the time-frequency resource of the reference signal can not be allocated by the first device, for example, it can be pre-configured or pre-defined. For example, the first device and the second device can determine the time-frequency resource of the reference signal based on a pre-defined time-frequency resource. For another example, the first device and the second device can determine the time-frequency resource of the reference signal based on a pre-configured time-frequency resource. For yet another example, the first device and the second device can determine the time-frequency resource of the reference signal from a protocol. Therefore, in this case, the first device can not need to indicate the time-frequency resource of the reference signal to the second device, and step S2101 can be omitted. On the other hand, the first device can determine the interference signal in other ways, and the way of determining the interference signal by receiving the reference signal and performing channel estimation based on the reference signal is only an optional embodiment in the present disclosure. If the first device determines the interference signal in other ways, step S2101 can be omitted.

[0140] In step S2102, the second device 102 sends the reference signal to the first device 101.

[0141] In some embodiments, the first device 101 receives the reference signal sent by the second device 102.

[0142] In some embodiments, the first device 101 can be a terminal, and the second device 102 can be a CW node. The terminal can receive the reference signal sent by the CW node.

[0143] In some embodiments, the reference signal includes at least one of the following: a Channel State Information-Reference Signal (CSI-RS); a Sounding Reference Signal (SRS); an uplink Demodulation Reference Signal (UL DMRS); a downlink Demodulation Reference Signal (DL DMRS); and a newly designed reference signal.

[0144] Optionally, an existing reference signal can be multiplexed. For example, the reference signal can be at least one of the following: a CSI-RS, a SRS, a UL DMRS, and a DL DMRS.

[0145] Optionally, a new reference signal can be designed.

[0146] In some embodiments, the newly designed reference signal can be a sequence with a length of L. The sequence can be at least one of the following: a pseudo-random sequence (gold sequence); a maximum length linear feedback shift register sequence (M-sequence); a non-binary unit amplitude sequence (ZC sequence).

[0147] In some embodiments, the time-frequency resource in which the second device 102 transmits the reference signal can be indicated based on the second information transmitted by the first device. For example, the time-frequency resource in which the second device 102 transmits the reference signal can be preconfigured by the network device. For example, the reference signal can be periodically transmitted, and the network device can preconfigure the reference signal to occupy M consecutive or non-consecutive time-frequency resource units and / or N consecutive or non-consecutive frequency domain resource units. The time-frequency resource in which the second device 102 transmits the reference signal can also be a time-frequency resource pre-defined between the network device. For example, the time-frequency domain pattern of the reference signal, i.e., the position and number of resource units occupied in the time domain and the frequency domain, can be pre-defined between the first device, the second device, and the network device. If the reference signal is multiplexed with an existing reference signal, the second device can also determine the time-frequency resource of the reference signal according to the existing time-frequency resource. Accordingly, the first device 101 can allocate the time-frequency resource of the reference signal, and the first device is aware of the time-frequency resource of the reference signal. Alternatively, the first device can determine the time-frequency resource of the reference signal through pre-configuration or pre-definition of the network device.

[0148] In step S2103, the first device 101 estimates the channel between the first device 101 and the second device 102 according to the reference signal.

[0149] In some embodiments, the first device can estimate the channel between the first device and the second device according to the reference signal. For example, channel estimation algorithms such as least square criterion (LS), minimum mean square error criterion (MMSE), linear minimum mean square error criterion (LMMSE), etc. can be used to estimate the channel, but the present disclosure is not limited thereto, and other ways of estimating the channel can also be used.

[0150] In step S2104, the second device 102 transmits first information to the first device 101.

[0151] In some embodiments, the first device 101 receives the first information transmitted by the second device 102.

[0152] In some embodiments, the first information is used to indicate the parameter information of the CW. The parameter information of the CW is used to calculate the expression of the interference signal together with the channel, i.e., to determine the interference signal.

[0153] In some embodiments, taking the CW as a sine wave as an example, the expression of the CW can be where A is an amplitude value, ω is a frequency value, is a phase value, and sin() is a sine symbol. The parameter information of the CW includes at least one of A, ω, and For example, the first information can indicate at least one of A, ω, and For example, the first information can indicate at least one of A, ω, and

[0154] In some embodiments, the name of the first information is not limited, which can be, for example, “indication information”, “configuration information”, and the like.

[0155] It can be understood that the step S2103 is optional. The CW is an electromagnetic wave broadcast by the second device, as an example, the parameter information of the CW is determined by the first device and indicated to the second device by the first device, and then the parameter information of the CW is known information of the first device, which can be directly used to determine the interference signal together with the estimated channel, and then the step S2103 can be omitted. As another example, the parameter information of the CW is determined by the second device, and then the second device can indicate the parameter information of the CW to the first device through the first information, so that the first device determines the interference signal according to the parameter information of the CW and the estimated channel, and then the step S2103 can be performed.

[0156] In step S2105, the first device 101 determines the interference signal.

[0157] Optionally, in step S2105a, the first device 101 determines the interference signal based on the channel and the parameter information of the CW. Wherein, the interference signal is from the second device. For example, the second device provides the CW to the A-IoT device, so that the A-IoT device transmits signals based on the way of backscattering the CW. While the CW broadcasted by the second device reaches the first device after weakening, for the first device, the weakened CW is the interference signal, which will cause interference to other normal signals, for example, to the D2R signal.

[0158] Optionally, in step S2105b, the first device 101 determines the signal received in the case of satisfying the condition as the interference signal. Wherein, the interference signal is from the second device. For example, the second device provides the CW to the A-IoT device, so that the A-IoT device transmits signals based on the way of backscattering the CW. While the CW broadcasted by the second device reaches the first device after weakening, for the first device, the weakened CW is the interference signal, which will cause interference to other normal signals, for example, to the D2R signal.

[0159] In some embodiments, the first device can determine the interference signal based on the parameter information of the channel and the CW. For example, the parameter information of the CW can determine an expression of the CW, and the expression of the CW and the channel are convoluted to obtain an expression of the interference signal, i.e., to determine the interference signal.

[0160] In some embodiments, the first device can determine the signal received when the condition is met as the interference signal. For example, the above steps S2101-S2103 can be omitted, and the first device can determine the signal received when the condition is met as the interference signal.

[0161] In some embodiments, the condition includes at least one of the following: the current time is before the time when the first device transmits the third information, and the current time is the time when the second device transmits the CW, and the third information is used to inventory the A-IoT device; the current time is after the time when the first device transmits the third information, and before the time when the A-IoT device is about to transmit the fourth information, and the current time is the time when the second device transmits the CW, and the fourth information is the response information of the third information; all A-IoT devices within the coverage range of the first device are in the charging state, and the current time is the time when the second device transmits the CW; all A-IoT devices within the coverage range of the first device are in the off state, and the current time is the time when the second device transmits the CW.

[0162] Optionally, the condition can include that the current time is before the time when the first device transmits the third information, and the current time is the time when the second device transmits the CW. Wherein, the third information is used to inventory the A-IoT device, for example, the third information can be a command used for inventory. Illustratively, the first device can transmit the third information to the A-IoT device to inventory the A-IoT device, and the A-IoT device transmits the D2R signal to the first device in response to the third information. Then, before the first device transmits the third information, the A-IoT device has a high probability of not transmitting the D2R signal, and will not reflect the CW. That is, before the first device transmits the third information, the first device has a high probability of not receiving the D2R signal. Therefore, if the current time meets the time before the third information is transmitted, and the time when the second device transmits the CW, the first device has a high probability of not receiving the D2R signal, and only receiving the interference signal remaining on the first device side after the CW is weakened. Therefore, the first device determines the signal received when the time before the third information is transmitted and the time when the second device transmits the CW as the interference signal.

[0163] Optionally, the condition can include that the current time is before the time when the first device transmits the third information, and before the time when the A-IoT device is about to transmit the fourth information, and the current time is the time when the second device transmits the CW. The fourth information is response information of the third information, for example, the third information is a command for inventory, and the fourth information is a D2R signal. Exemplarily, in the time period after the first device transmits the third information and before the fourth information is about to be transmitted, the A-IoT device does not send the fourth information, nor does it reflect the CW. Then, in this time period, if the second device transmits the CW, the signal received by the first device has a greater probability of being an interference signal of the CW remaining on the side of the first device after attenuation. Therefore, the first device determines the signal received at the time after the time when the third information is transmitted and before the time when the fourth information is about to be transmitted, and at the time when the second device transmits the CW, as an interference signal.

[0164] Optionally, the condition can include that all A-IoT devices within the coverage range of the first device are in a charging state. Wherein, all A-IoT devices within the coverage range of the first device can refer to devices that can receive and decode the third information. The charging state can also be referred to as the charging state, and the device in the charging state will not reflect the CW, nor will it send the fourth information. Then, if all A-IOT devices within the coverage range of the first device are in the charging state, and the second device transmits the CW, the signal received by the first device has a greater probability of being an interference signal of the CW remaining on the side of the first device after attenuation. Therefore, the first device can determine the signal received at the time when all A-IOT devices within the coverage range of the first device are in the charging state and the second device transmits the CW as an interference signal.

[0165] Optionally, the condition can include that all A-IoT devices within the coverage range of the first device are in an OFF state. Wherein, all A-IoT devices within the coverage range of the first device can refer to devices that can receive and decode the third information. The device in the OFF state will not reflect the CW, nor will it send the fourth information. Then, if all A-IOT devices within the coverage range of the first device are in the OFF state, and the second device transmits the CW, the signal received by the first device has a greater probability of being an interference signal of the CW remaining on the side of the first device after attenuation. Therefore, the first device can determine the signal received at the time when all A-IOT devices within the coverage range of the first device are in the OFF state and the second device transmits the CW as an interference signal.

[0166] In some embodiments, the time at which the A-IoT device is about to send the fourth information is a time after a first time duration from the time at which the third information is sent. The first time duration is a minimum time duration required by the A-IoT device to prepare for sending the fourth information. For example, the first device can determine the time at which the A-IoT device is about to send the fourth information according to the time at which the third information is sent and the first time duration, and determine that the condition is satisfied based on the fact that the current time is before the time at which the A-IoT device is about to send the fourth information. The first time duration can be specified in a protocol, preconfigured by the network device, indicated by the A-IoT device to the first device, or predefined, which is not limited in the present disclosure. The fourth information is response information of the third information, and the A-IoT device needs at least a period of time to generate the response information, which is the minimum time duration required for sending the fourth information, i.e., the first time duration in the present disclosure. It can be understood that the name of the first time duration is not limited, which can be, for example, the minimum response time duration of the third information. The third information can be, for example, a reader inventory command, and the fourth information is inventory information fed back by the A-IoT device, which includes, for example, device status of the A-IoT device, location information of the A-IoT device, fault information of the A-IoT device, data transmission status of the A-IoT device, etc. The A-IoT device needs at least a period of time to determine the inventory information as described above, which is the first time duration.

[0167] In some embodiments, the first device can determine that all A-IoT devices within the coverage range of the first device are in the charging state in the following manner: if the current time is after the time at which the first device sends the fifth information and before the time at which the A-IoT device is about to end charging, it is determined that all A-IoT devices within the coverage range of the first device are in the charging state. For example, the fifth information is used to instruct the A-IoT device to perform charging. After the first device sends the fifth information, all A-IoT devices within the coverage range of the first device will generally start to perform charging, and the A-IoT device is in the charging state after the A-IoT device starts to perform charging and before the A-IoT device is about to end charging.

[0168] In some embodiments, the time at which the A-IoT device is about to end charging is a time after a second time duration from the time at which the fifth information is sent. The second time duration is a minimum time duration required by the A-IoT device to charge. For example, the first device can determine the time at which the A-IoT device is about to end charging according to the time at which the fifth information is sent and the second time duration, and determine whether all A-IoT devices within the coverage range of the first device are in the charging state based on this, and if all A-IoT devices are in the charging state, the condition is satisfied.

[0169] It can be understood that the interference signal is determined in the present disclosure, and it can also be understood that the parameter information of the interference signal is determined, that is, the signal with what kind of parameter information is determined as the interference signal, so as to eliminate the interference signal. For example, the parameter information of the interference signal can include at least one of an amplitude value, a frequency value, and a phase value.

[0170] In some embodiments, after the first device 101 determines the interference signal, the interference signal can be eliminated in the subsequently received mixed signal. For example, the first device can generate a signal with the same amplitude value and opposite phase value of the interference signal, and add the signal to the received mixed signal. For example, the mixed signal includes the D2R signal and the interference signal. The first device eliminates the interference signal to avoid the interference of the interference signal on the D2R signal. For another example, the first device can extract the D2R signal from the mixed signal based on the interference signal.

[0171] The communication method related to the embodiments of the present disclosure can include at least one of steps S2101-S2105. Steps S2101-S2105 can be implemented as separate embodiments, and each embodiment can be combined and adjusted in order without contradiction. For example, step S2105 can be implemented as an independent embodiment, but is not limited thereto.

[0172] In some embodiments, the plurality of steps are optional, and one or more of the steps can be omitted or replaced in different embodiments. For example, steps S2101-S2104 are optional.

[0173] In some embodiments, other optional implementations described before or after the description of FIG. 2 can be referred to.

[0174] FIG. 3a is a flow chart of a communication method according to an embodiment of the present disclosure. As shown in FIG. 3a, the embodiment of the present disclosure relates to a communication method, which is executed by the first device 101, and the above method includes:

[0175] Step S3101, transmitting second information.

[0176] The optional implementation of step S3101 can be referred to the optional implementation of step S2101 of FIG. 2 and other related parts in the embodiments related to FIG. 2, which will not be described here.

[0177] In some embodiments, the first device 101 transmits the second information to the second device 102, but is not limited thereto, and can transmit the second information to other entities.

[0178] Step S3102, obtaining a reference signal.

[0179] The optional implementation of step S3102 can refer to the optional implementation of step S2102 in FIG. 2 and other associated parts in the embodiments involved in FIG. 2, which will not be repeated here.

[0180] In some embodiments, the first device 101 receives the reference signal sent by the second device 102, but is not limited thereto, and can also receive the reference signal sent by other subjects.

[0181] In some embodiments, the first device 101 acquires the reference signal specified by the protocol.

[0182] In some embodiments, the first device 101 acquires the reference signal from the upper layer(s).

[0183] In some embodiments, the first device 101 processes to obtain the reference signal.

[0184] In some embodiments, step S3102 is omitted, and the first device 101 autonomously implements the function indicated by the reference signal, or the above function is default or default.

[0185] Step S3103, according to the reference signal, estimates the channel between the first device 101 and the second device 102.

[0186] The optional implementation of step S3103 can refer to the optional implementation of step S2103 in FIG. 2 and other associated parts in the embodiments involved in FIG. 2, which will not be repeated here.

[0187] Step S3104, acquiring the first information.

[0188] The optional implementation of step S3104 can refer to the optional implementation of step S2104 in FIG. 2 and other associated parts in the embodiments involved in FIG. 2, which will not be repeated here.

[0189] In some embodiments, the first device 101 receives the first information sent by the second device 102, but is not limited thereto, and can also receive the first information sent by other subjects.

[0190] In some embodiments, the first device 101 acquires the first information specified by the protocol.

[0191] In some embodiments, the first device 101 acquires the first information from the upper layer(s).

[0192] In some embodiments, the first device 101 processes to obtain the first information.

[0193] In some embodiments, step S3104 is omitted, and the first device 101 autonomously implements the function indicated by the first information, or the function is default or default.

[0194] Step S3105: determining the interference signal based on the parameter information of the channel and the CW.

[0195] The optional implementation of step S3105 can refer to the optional implementation of step S2105a in FIG. 2 and other associated parts in the embodiments involved in FIG. 2, which will not be repeated here.

[0196] FIG. 3b is a flow chart of a communication method according to an embodiment of the present disclosure. As shown in FIG. 3b, the embodiment of the present disclosure relates to a communication method, which is performed by the first device 101, and the method comprises the following steps:

[0197] Step S3201: determining the signal received in the case of meeting the condition as the interference signal.

[0198] The optional implementation of step S3201 can refer to the optional implementation of step S2105b in FIG. 2 and other associated parts in the embodiments involved in FIG. 2, which will not be repeated here.

[0199] FIG. 4 is a flow chart of a communication method according to an embodiment of the present disclosure. As shown in FIG. 4, the embodiment of the present disclosure relates to a communication method, which is performed by the second device 102, and the method comprises the following steps:

[0200] Step S4101: obtaining second information.

[0201] The optional implementation of step S4101 can refer to the optional implementation of step S2101 in FIG. 2 and other associated parts in the embodiments involved in FIG. 2, which will not be repeated here.

[0202] In some embodiments, the second device 102 receives the second information sent by the first device 101, but is not limited thereto, and can also receive the second information sent by other subjects.

[0203] In some embodiments, the second device 102 obtains the second information specified by a protocol.

[0204] In some embodiments, the second device 102 obtains the second information from the upper layer(s).

[0205] In some embodiments, the second device 102 processes to obtain the second information.

[0206] In some embodiments, step S4101 is omitted, and the second device 102 autonomously implements the function indicated by the second information, or the function is default or default.

[0207] Step S4102. Transmit the reference signal.

[0208] The optional implementation of step S4102 can refer to the optional implementation of step S2102 in FIG. 2 and other associated parts in the embodiments involved in FIG. 2, which will not be repeated here.

[0209] In some embodiments, the second device 102 transmits the reference signal to the first device 101, but is not limited thereto, and can also transmit the reference signal to other entities.

[0210] Step S4103. Transmit the first information.

[0211] The optional implementation of step S4103 can refer to the optional implementation of step S2103 in FIG. 2 and other associated parts in the embodiments involved in FIG. 2, which will not be repeated here.

[0212] In some embodiments, the second device 102 transmits the first information to the first device 101, but is not limited thereto, and can also transmit the first information to other entities.

[0213] FIG. 5 is an interaction diagram of a communication method according to an embodiment of the present disclosure. As shown in FIG. 5, the embodiment of the present disclosure relates to a communication method, and the above method comprises:

[0214] Step S5101. The first device receives the reference signal transmitted by the second device, and estimates the channel between the first device and the second device according to the reference signal.

[0215] Step S5102. The first device determines the interference signal based on the channel and the parameter information of the CW.

[0216] In some embodiments, the above method can include the method of the embodiments of the above communication system side, first device side, second device side, etc., which will not be repeated here.

[0217] The present disclosure provides a communication method, which is as follows:

[0218] In some embodiments, the reader (intermediate UE) performs interference cancellation, the reader side determines CW1 by the following method, and cancels CW1 in the mixed signal of CW1 and D2R signal to obtain the D2R signal. CW1 can also be referred to as an interference signal.

[0219] In some embodiments, the CW node transmits signal 1, the reader side performs channel estimation according to the received signal 1, estimates the channel H between the CW node and the reader, and obtains CW1 based on the channel H.

[0220] In some embodiments, signal 1 is a new reference signal, signal 1 is a sequence with length L, the sequence can be gold sequence, ZC sequence, M sequence, etc.

[0221] In some embodiments, signal 1 can be multiplexed with existing CSI-RS or SRS signal or DMRS, for example, if CW node is a base station, CW node can send CSI-RS signal to reader.

[0222] In some embodiments, the expression of CW signal is The amplitude value A, W value, φ value, etc. of the signal, the reader side obtains the information by the following method:

[0223] Optionally, CW node indicates the above information to reader, then the connection between CW node and reader is established, if CW node is UE, similar PC5 interface is needed to establish the connection between CW node and reader.

[0224] Optionally, reader side controls the sending of CW node, reader knows the amplitude value A, W value, φ value, etc. of CW. When reader determines the expression of CW Asin(ωt+φ), and the channel estimated by reader side is H, then CW1=CW*H.

[0225] In some embodiments, the time-frequency resource of signal 1 is determined by the following method:

[0226] Optionally, if it is multiplexed with existing CSI-RS or SRS signal, or uplink and downlink DMRS signal, then use the existing specified time-frequency resource to send signal 1.

[0227] Optionally, if signal 1 is a new signal, signal 1 can use uplink or downlink resource to send.

[0228] In some embodiments, the time-frequency resource of signal 1 sent by CW node is allocated and indicated by UE reader to CW node, such as indicating the starting position and length of time domain resource, the starting position and length of frequency domain resource, or using bitmap to indicate the position of time domain resource or frequency domain resource. Or the time-frequency resource of signal 1 is pre-configured by base station, for example, signal 1 is periodically sent, configure signal 1 to fixedly occupy M continuous or discontinuous time domain resource units, and N continuous or discontinuous frequency domain resource units, or predefine the time-frequency domain pattern of signal 1, that is, the position and quantity of resource units occupied in time domain and frequency domain.

[0229] In some embodiments, the time domain resource unit can be a subframe, a time slot, a symbol, a chip, and the frequency domain resource unit can be a RB, a subchannel, a channel, a bandwidth BW, etc.

[0230] In some embodiments, the channel estimation is performed according to the signal 1, and the channel H is obtained by using a channel estimation algorithm, such as a least square criterion (LS) algorithm, a minimum mean square error (MMSE) algorithm, or a linear minimum mean square error (LMMSE) algorithm.

[0231] In some embodiments, when the following conditions are met, the reader determines the received signal S as CW1 (when the following conditions are met, the device does not reflect the CW, and there is no D2R transmission, and at the reader side, only the CW passes through the fading of link 1, and the residual interference CW1 at the reader side).

[0232] Condition 1: Before the reader sends a command for inventory, and at any time when the CW node sends the CW, the received signal S is determined as CW1 (because before the reader sends the inventory command, the CW is not reflected, and no device sends a D2R signal to the reader).

[0233] Condition 2: The reader sends an R2D command at time T1, and then within a time period t, t satisfies T1

[0234] Condition 3: When all devices in the coverage range of the reader are in the charging state or OFF state (the device does not reflect the CW when receiving the CW, and there is no D2R transmission), the reader determines the received signal S as CW1 at any time when the CW node sends the CW, and the reader indicates that all devices in the coverage range are in the charging state or OFF state by the following method:

[0235] (1): reader sends 1 charging command to all devices in its coverage range at time T1 on PR2DCH, the charging command indicates that all devices in reader's coverage range should perform charging, and the minimum duration t of charging, then the reader side in the time [T1, T1+t] and the signal S received at any 1 time of CW node sending CW determines CW1.

[0236] (2) all devices in reader's coverage range, refers to the set of devices that can receive and decode the command sent by the reader.

[0237] In some embodiments, the specific method of the reader to eliminate CW1 in the mixed signal of CW1 and D2R according to the determined CW1 depends on the implementation of the UE, and the implementation method can be as follows:

[0238] Optionally, after the reader obtains CW1, the reader side generates a signal CW2 with the same amplitude value and opposite phase of the CW1 signal, and adds CW2 to the mixed signal of CW1 and D2R to cancel the CW1 signal and obtain the D2R signal.

[0239] Optionally, the reader extracts the D2R signal from the mixed signal of CW1 and D2R on the basis of the known CW1 signal.

[0240] The embodiments of the present disclosure also propose an apparatus for implementing any of the above methods, for example, an apparatus comprising units or modules for implementing the steps performed by the first device in any of the above methods. For another example, another apparatus is also proposed, comprising units or modules for implementing the steps performed by the second device in any of the above methods.

[0241] It should be understood that the division of each unit or module in the above apparatus is only a logical function division, and all or part of them can be integrated into a physical entity or physically separated in actual implementation. In addition, the units or modules in the apparatus can be implemented in the form of processor calling software: for example, the apparatus includes a processor, the processor is connected with a memory, the memory stores instructions, and the processor calls the instructions stored in the memory to realize any of the above methods or realize the functions of each unit or module of the above apparatus, wherein the processor is a general processor such as a central processing unit (CPU) or a microprocessor, and the memory is a memory in the apparatus or a memory outside the apparatus. Alternatively, the units or modules in the apparatus can be implemented in the form of hardware circuit, and the functions of part or all of the units or modules can be realized by the design of hardware circuit. The above hardware circuit can be understood as one or more processors; for example, in one implementation, the above hardware circuit is an application-specific integrated circuit (ASIC), and the functions of part or all of the units or modules are realized by the design of the logical relationship of elements in the circuit; for another example, in another implementation, the above hardware circuit is a programmable logic device (PLD), and a field programmable gate array (FPGA) is taken as an example, which can include a large number of logic gate circuits, and the connection relationship between the logic gate circuits is configured by a configuration file, so as to realize the functions of part or all of the above units or modules. All units or modules of the above apparatus can be all implemented in the form of processor calling software, or all implemented in the form of hardware circuit, or part implemented in the form of processor calling software and the remaining part implemented in the form of hardware circuit.

[0242] In the embodiments of the present disclosure, the processor is a circuit with signal processing capability. In one implementation, the processor can be a circuit with instruction reading and running capability, such as a central processing unit (CPU), a microprocessor, a graphics processing unit (GPU) (which can be understood as a microprocessor), a digital signal processor (DSP), and the like. In another implementation, the processor can implement certain functions through a logical relationship of a hardware circuit, and the logical relationship of the hardware circuit is fixed or reconfigurable. For example, the processor is a hardware circuit implemented by an application-specific integrated circuit (ASIC) or a programmable logic device (PLD), such as an FPGA. In the reconfigurable hardware circuit, the processor loads a configuration document to implement the configuration of the hardware circuit. It can be understood that the processor loads instructions to implement the functions of the above part or all units or modules. In addition, it can also be a hardware circuit designed for artificial intelligence, which can be understood as an ASIC, such as a neural network processing unit (NPU), a tensor processing unit (TPU), a deep learning processing unit (DPU), and the like.

[0243] FIG. 6a is a structural schematic diagram of a first device according to an embodiment of the present disclosure. As shown in FIG. 6a, the first device 6100 can include at least one of a processing module 6101 and a transceiver module 6102. The processing module 6101 is configured to determine an interference signal from a second device, the second device being configured to provide a continuous electromagnetic wave (CW) for an ambient Internet of Things (A-IoT) device.

[0244] In some embodiments, the processing module 6101 determines the interference signal in the following manner: the first device receives a reference signal sent by the second device, and estimates a channel between the first device and the second device according to the reference signal; the first device determines the interference signal based on the channel and parameter information of the CW; wherein the parameter information of the CW is determined by the first device; or the parameter information of the CW is determined by the second device and indicated to the first device.

[0245] In some embodiments, the reference signal comprises at least one of: a channel state information reference signal (CSI-RS); a sounding reference signal (SRS); an uplink demodulation reference signal (UL DMRS); a downlink demodulation reference signal (DL DMRS); a newly designed reference signal.

[0246] In some embodiments, the newly designed reference signal comprises at least one of: a pseudo-random sequence; a maximum length linear feedback shift register sequence; a non-binary unit amplitude sequence.

[0247] In some embodiments, the first device further comprises a transceiver module 6102 configured to receive first information sent by the second device, the first information being used to indicate the parameter information.

[0248] In some embodiments, the transceiver module 6102 is further configured to: send second information to the second device, the second information being used to indicate time-frequency resources of the reference signal; or, determine the time-frequency resources of the reference signal based on preconfigured time-frequency resources; or, determine the time-frequency resources of the reference signal based on predefined time-frequency resources.

[0249] In some embodiments, the processing module 6101 determines the interference signal in the following manner: the first device determines, as the interference signal, a signal received when a condition is met.

[0250] In some embodiments, the condition comprises at least one of: a current time is before a time when the first device sends third information, and the current time is a time when the second device sends a CW, the third information being used to inventory the A-IoT device; the current time is after the time when the first device sends the third information, and before a time when the A-IoT device is about to send fourth information, and the current time is the time when the second device sends the CW, the fourth information being response information of the third information; all A-IoT devices within a coverage range of the first device are in a charging state, and the current time is the time when the second device sends the CW; all A-IoT devices within the coverage range of the first device are in an off state, and the current time is the time when the second device sends the CW.

[0251] In some embodiments, the time when the A-IoT device is about to send the fourth information is a time after a first time duration from a time when the third information is sent; wherein the first time duration is a shortest time duration required by the A-IoT device to prepare the fourth information.

[0252] In some embodiments, the processing module 6101 is further configured to: if the current time is after the time when the first device sends the fifth information, and before the time when the A-IoT device is about to end the charging, determine that all A-IoT devices in the coverage range of the first device are in the charging state; wherein the fifth information is used to instruct all A-IoT devices in the coverage range of the first device to perform charging.

[0253] In some embodiments, the time when the A-IoT device is about to end the charging is: a time after a second duration from the time when the fifth information is sent; wherein the second duration is the shortest duration required for the A-IoT device to charge.

[0254] FIG. 6b is a structural schematic diagram of a second device according to an embodiment of the present disclosure. As shown in FIG. 6b, the second device 6200 can include at least one of a transceiver module 6201 and a processing module 6202. The transceiver module 6201 is configured to send a reference signal to a first device, the reference signal being used to estimate a channel between the first device and the second device, the channel being used to determine an interference signal together with parameter information of a CW, and the second device being configured to provide the CW for an A-IoT device.

[0255] In some embodiments, the reference signal includes at least one of: a channel state information reference signal (CSI-RS); a sounding reference signal (SRS); an uplink demodulation reference signal (UL DMRS); a downlink demodulation reference signal (DL DMRS); and a newly designed reference signal.

[0256] In some embodiments, the newly designed reference signal includes at least one of: a pseudo-random sequence; a maximum linear feedback shift register sequence; and a non-binary unit amplitude sequence.

[0257] In some embodiments, the transceiver module 6201 is further configured to send first information to the first device, the first information being used to indicate the parameter information.

[0258] In some embodiments, the transceiver module 6201 is further configured to: receive second information sent by the first device, the second information being used to indicate time-frequency resources of the reference signal; or, determine the time-frequency resources of the reference signal based on pre-configured time-frequency resources; or, determine the time-frequency resources of the reference signal based on pre-defined time-frequency resources.

[0259] FIG. 7a is a structural schematic diagram of a communication device according to an embodiment of the present disclosure. The communication device 7100 can be a network device, a terminal, a chip, a chip system, a processor, or the like supporting the network device to implement any of the above methods, or a chip, a chip system, a processor, or the like supporting the terminal to implement any of the above methods. Optionally, the network device can be an access network device, a core network device, or the like. Optionally, the terminal can be a user equipment, or the like. The communication device 7100 can be used to implement the methods described in the above method embodiments, and details can be referred to the descriptions in the above method embodiments.

[0260] As shown in FIG. 7a, the communication device 7100 includes one or more processors 7101. The processor 7101 can be a general purpose processor, a special purpose processor, or the like, for example, a baseband processor or a central processing unit. The baseband processor can be used to process communication protocols and communication data, and the central processing unit can be used to control the communication device, execute programs, and process data of the programs. The communication device 7100 is used to implement any of the above methods. Optionally, the communication device can be a base station, a baseband chip, a terminal device, a terminal device chip, a DU, a CU, or the like.

[0261] In some embodiments, the communication device 7100 further includes one or more memories 7102 for storing instructions. Optionally, all or part of the memory 7102 can also be outside the communication device 7100.

[0262] In some embodiments, the communication device 7100 further includes one or more transceivers 7103. When the communication device 7100 includes one or more transceivers 7103, the transceiver 7103 performs the communication steps S2101 such as transmitting and / or receiving in the above methods, and the processor 7101 performs other steps.

[0263] In some embodiments, the transceiver can include a receiver and / or a transmitter, which can be separate or integrated together. Optionally, the terms of transceiver, transceiving unit, transceiver, transceiving circuit, and the like can be replaced with each other, the terms of transmitter, transmitting unit, transmitter, transmitting circuit, and the like can be replaced with each other, and the terms of receiver, receiving unit, receiver, receiving circuit, and the like can be replaced with each other.

[0264] In some embodiments, the communication device 7100 can include one or more interface circuits 7104. Optionally, the interface circuit 7104 is connected with the memory 7102, and the interface circuit 7104 can be used to receive signals from the memory 7102 or other devices, and can be used to send signals to the memory 7102 or other devices. For example, the interface circuit 7104 can read instructions stored in the memory 7102 and send the instructions to the processor 7101.

[0265] The communication device 7100 described in the above embodiments can be a network device or a terminal, but the scope of the communication device 7100 described in the present disclosure is not limited thereto, and the structure of the communication device 7100 can not be limited by FIG. 7a. The communication device can be a standalone device or can be part of a larger device. For example, the communication device can be: 1) a standalone integrated circuit (IC), or a chip, or a chip system or subsystem; (2) a set of one or more ICs, which can optionally also include storage components for storing data, programs; (3) an ASIC, such as a modem; (4) a module that can be embedded in other devices; (5) a receiver, a terminal device, a smart terminal device, a cellular phone, a wireless device, a handset, a mobile unit, a vehicle-mounted device, a network device, a cloud device, an artificial intelligence device, and the like; (6) and the like.

[0266] FIG. 7b is a schematic diagram of a chip structure according to an embodiment of the present disclosure. For the case where the communication device 7100 is a chip or a chip system, the structure of the chip 7200 can be as shown in FIG. 7b, but is not limited thereto.

[0267] The chip 7200 includes one or more processors 7201, and the chip 7200 is configured to execute any of the above methods.

[0268] In some embodiments, the chip 7200 further includes one or more interface circuits 7202. Optionally, the interface circuit 7202 is connected to the memory 7203, and the interface circuit 7202 can be configured to receive signals from the memory 7203 or other devices, and the interface circuit 7202 can be configured to send signals to the memory 7203 or other devices. For example, the interface circuit 7202 can read instructions stored in the memory 7203 and send the instructions to the processor 7201.

[0269] In some embodiments, the interface circuit 7202 performs the communication steps S2101 of sending and / or receiving in the above methods, and the processor 7201 performs other steps.

[0270] In some embodiments, the terms interface circuit, interface, transceiver pin, and transceiver can be replaced by each other.

[0271] In some embodiments, the chip 7200 further includes one or more memories 7203 for storing instructions. Optionally, all or part of the memory 7203 can be outside the chip 7200.

[0272] The present disclosure further provides a storage medium having stored instructions which, when executed on the communication device 7100, cause the communication device 7100 to perform any of the above methods. Optionally, the storage medium is an electronic storage medium. Optionally, the storage medium is a computer-readable storage medium, but is not limited thereto and can also be a storage medium readable by other apparatuses. Optionally, the storage medium can be a non-transitory storage medium, but is not limited thereto and can also be a transitory storage medium.

[0273] The present disclosure further provides a program product which, when executed by the communication device 7100, causes the communication device 7100 to perform any of the above methods. Optionally, the program product is a computer program product.

[0274] The present disclosure further provides a computer program which, when executed on a computer, causes the computer to perform any of the above methods.

Claims

1. A communication method characterized by comprising: The method comprises: The first device determines an interference signal, the interference signal being from a second device configured to provide a continuous electromagnetic wave (CW) for an ambient Internet of Things (A-IoT) device.

2. The method of claim 1, wherein, The first device determines the interference signal in the following manner: The first device receives a reference signal transmitted by the second device, and estimates a channel between the first device and the second device according to the reference signal; The first device determines the interference signal based on the channel and parameter information of the CW; The parameter information of the CW is determined by the first device, or the parameter information of the CW is determined by the second device and indicated to the first device.

3. The method of claim 2, wherein, The reference signal comprises at least one of: a channel state information reference signal (CSI-RS); a sounding reference signal (SRS); an uplink demodulation reference signal (UL DMRS); a downlink demodulation reference signal (DL DMRS); a newly designed reference signal.

4. The method of claim 3, wherein, The newly designed reference signal comprises at least one of: a pseudo-random sequence; a maximum linear feedback shift register sequence; a non-binary unit amplitude sequence.

5. The method according to any one of claims 2-4, characterized in that, The method further comprises: The first device receives first information transmitted by the second device, the first information being used to indicate the parameter information.

6. The method according to any one of claims 2-5, characterized in that, The method further comprises: The first device transmits second information to the second device, the second information being used to indicate time-frequency resources of the reference signal; or The first device determines the time-frequency resources of the reference signal based on preconfigured time-frequency resources; or The first device determines the time-frequency resources of the reference signal based on predefined time-frequency resources.

7. The method of claim 1, wherein, The first device determines the interference signal in the following manner: The first device determines a signal received under a condition as the interference signal.

8. The method of claim 7, wherein, The condition comprises at least one of: a current time is before a time at which the first device transmits third information used to inventory the A-IoT device, and the current time is a time at which the second device transmits a CW; a current time is after the time at which the first device transmits the third information, and before a time at which the A-IoT device is about to transmit fourth information which is a response to the third information, and the current time is the time at which the second device transmits the CW; all A-IoT devices within a coverage range of the first device are in a charging state, and the current time is the time at which the second device transmits the CW; all A-IoT devices within the coverage range of the first device are in an off state, and the current time is the time at which the second device transmits the CW. The time at which the A-IoT device is about to transmit the fourth information is a time after a first duration from a time at which the third information is transmitted; 9. The method of claim 8, wherein, The first duration is a shortest duration required by the A-IoT device to prepare the fourth information. The method further comprises:

10. The method of claim 8, wherein, ​ If the current time is after the time when the first device sends the fifth information and before the time when the A-IoT device is about to end the charging, it is determined that all A-IoT devices in the coverage range of the first device are in the charging state. The fifth information is used to instruct all A-IoT devices in the coverage range of the first device to perform charging.

11. The method of claim 10, wherein, The time when the A-IoT device is about to end the charging is a time after a second duration from the time when the fifth information is sent. The second duration is the shortest duration required by the A-IoT device for charging.

12. A communication method characterized by comprising: The method comprises: The second device sends a reference signal to the first device, the reference signal being used to estimate a channel between the first device and the second device, the channel being used to determine an interference signal together with parameter information of a CW, and the second device being used to provide the CW for an A-IoT device.

13. The method of claim 12, wherein, The reference signal comprises at least one of: a channel state information reference signal (CSI-RS); a sounding reference signal (SRS); an uplink demodulation reference signal (UL DMRS); a downlink demodulation reference signal (DL DMRS); and a newly designed reference signal.

14. The method of claim 13, wherein, The newly designed reference signal comprises at least one of: a pseudo-random sequence; a maximum linear feedback shift register sequence; and a non-binary unit amplitude sequence.

15. The method according to any of claims 13-14, characterized by, The method further comprises: The second device sends first information to the first device, the first information being used to indicate the parameter information.

16. The method according to any one of claims 13-15, characterized in that, The method further comprises: The second device receives second information sent by the first device, the second information being used to indicate time-frequency resources of the reference signal; or The second device determines the time-frequency resources of the reference signal based on preconfigured time-frequency resources; or The second device determines the time-frequency resources of the reference signal based on pre-defined time-frequency resources. The method comprises:

17. A method of communication, comprising: The first device receives a reference signal sent by the second device and estimates a channel between the first device and the second device according to the reference signal; The first device determines an interference signal based on the channel and parameter information of a CW; The interference signal is from the second device, which is used to provide a continuous electromagnetic wave (CW) for an A-IoT device. The processing module determines the interference signal in the following manner:

18. A first device, comprising: The first device receives a reference signal sent by the second device and estimates a channel between the first device and the second device according to the reference signal; The first device determines an interference signal based on the channel and parameter information of a CW; 19. The first device of claim 18, wherein, The parameter information of the CW is determined by the first device; or the parameter information of the CW is determined by the second device and indicated to the first device. The first device further comprises a transceiver module for receiving first information sent by the second device, the first information being used to indicate the parameter information. ​ ​ 20. The first device of claim 19, wherein, ​ 21. The first device of claim 18, wherein, The processing module determines the interference signal in the following manner: the signal received by the first device when the condition is met is determined as the interference signal.

22. The first device of claim 21, wherein, The condition comprises at least one of the following: The current time is before the time when the first device transmits third information, and the current time is the time when the second device transmits the CW, the third information is used to inventory the A-IoT device; The current time is after the time when the first device transmits the third information, and before the time when the A-IoT device is about to transmit fourth information, and the current time is the time when the second device transmits the CW, the fourth information is response information of the third information; All A-IoT devices within the coverage range of the first device are in the charging state, and the current time is the time when the second device transmits the CW. All A-IoT devices within the coverage range of the first device are in the off state, and the current time is the time when the second device transmits the CW.

23. The first device of claim 22, wherein, The time when the A-IoT device is about to transmit the fourth information is the time after a first time length from the time when the third information is transmitted; wherein the first time length is the shortest time length required by the A-IoT device to prepare to transmit the fourth information.

24. The first device of claim 22, wherein, The processing module is further configured to: If the current time is after the time when the first device transmits the fifth information, and before the time when the A-IoT device is about to end charging, it is determined that all A-IoT devices within the coverage range of the first device are in the charging state; Wherein, the fifth information is used to instruct all A-IoT devices within the coverage range of the first device to perform charging.

25. The first device of claim 24, wherein, The time when the A-IoT device is about to end charging is the time after a second time length from the time when the fifth information is transmitted; Wherein, the second time length is the shortest time length required by the A-IoT device to charge.

26. A second device, comprising: Comprising: The transceiver module is configured to transmit a reference signal to the first device, the reference signal being used to estimate a channel between the first device and the second device, the channel being used to determine an interference signal together with parameter information of the CW, and the second device being configured to provide the CW for the A-IoT device.

27. The second device of claim 26, wherein, The transceiver module is further configured to transmit first information to the first device, the first information being used to indicate the parameter information.

28. A first device, comprising: Comprising: One or more processors; The processor is configured to perform the communication method of any one of claims 1 to 11.

29. A second device, comprising: Comprising: One or more processors; The processor is configured to perform the communication method of any one of claims 12 to 16.

30. A communication system, characterized by Comprising: The first device and the second device, wherein the first device is configured to implement the communication method of any one of claims 1 to 11, and the second device is configured to implement the communication method of any one of claims 12 to 16.

31. A storage medium, characterized by Comprising: The storage medium stores instructions, when the instructions run on the communication device, cause the communication device to perform the communication method of any one of claims 1 to 11 or 12 to 16.

32. A program product, characterized by Comprising: A computer program which, when executed by a communications device, causes the communications device to perform the communications method of any of claims 1 to 11 or 12 to 16. 16.

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