Communication method, communication device, and storage medium

Abstract

The present application provides a communication method, a communication device, and a storage medium. The communication method applied to a first communication device comprises: sending a forward signal to a second communication device; and receiving a reflected signal generated by a backscattered carrier from the second communication device, wherein the carrier is transmitted according to predetermined transmission configuration information, and the transmission configuration information is used for configuring a transmission parameter used by a third communication device when sending a carrier.

Description

Communication method, communication device, and storage medium TECHNICAL FIELD

[0001] The present application relates to the technical field of communication, in particular to a communication method, a communication device and a storage medium. BACKGROUND

[0002] In an ambient Internet of Things (A-IoT) scenario, a dual station deployment mode can be used to avoid a Reader supporting full duplex. However, in an actual communication process, a Carrier Wave Transmitter (CWT) transmits a carrier wave (CW) and coordinates between forward communication (FL) and return communication (RL) with the Reader, so as to meet A-IoT communication while avoiding interference, for example, if RL communication is performed, the CWT is required to be in an active transmission state and back reflection communication is completed; and if FL communication is performed, the CWT is required to be in a deactivated transmission state to avoid CW interference with tag device reception of FL signals. How to control the used carrier wave in the dual station deployment of the ambient Internet of Things scenario to avoid interference caused by carrier wave transmission and the like. SUMMARY

[0003] Therefore, the embodiments of the present application provide a communication method, a communication device and a storage medium, which effectively avoid interference caused by the transmission of a carrier wave on forward signal reception.

[0004] The embodiments of the present application provide a communication method, applied to a first communication device, comprising:

[0005] sending a forward signal to a second communication device;

[0006] receiving a reflection signal generated by back reflection of a carrier wave by the second communication device; wherein the carrier wave is transmitted according to pre-determined transmission configuration information; and the transmission configuration information is used to configure transmission parameters of the carrier wave transmitted by a third communication device.

[0007] The embodiments of the present application provide a communication method, applied to a third communication device, comprising:

[0008] transmitting a carrier wave according to pre-configured transmission parameters, so that the second communication device generates a reflection signal by back reflection of the carrier wave and sends the reflection signal to the first communication device; wherein the carrier wave is transmitted according to pre-determined transmission configuration information; and the transmission configuration information is used to configure transmission parameters of the carrier wave transmitted by the third communication device.

[0009] The embodiment of the present application provides a communication device, which is applied to a first communication equipment and comprises:

[0010] a transmitter configured to send a forward signal to a second communication equipment;

[0011] a receiver configured to receive a reflection signal generated by back reflection of a carrier by the second communication equipment; wherein the carrier is transmitted according to predetermined transmission configuration information; and the transmission configuration information is used for configuring transmission parameters of the carrier transmitted by a third communication equipment.

[0012] The embodiment of the present application provides a communication device, which is applied to a third communication equipment and comprises:

[0013] a transmitter configured to transmit a carrier according to preconfigured transmission parameters, so that the second communication equipment generates a reflection signal by back reflection of the carrier, and sends the reflection signal to the first communication equipment; wherein the carrier is transmitted according to predetermined transmission configuration information; and the transmission configuration information is used for configuring transmission parameters of the carrier transmitted by the third communication equipment.

[0014] The embodiment of the present application provides a communication device, which comprises a memory and one or more processors.

[0015] The memory is configured to store one or more programs.

[0016] When the one or more programs are executed by the one or more processors, the one or more processors implement the method in any of the above embodiments.

[0017] The embodiment of the present application provides a storage medium, which stores a computer program; when the computer program is executed by a processor, the method in any of the above embodiments is implemented. BRIEF DESCRIPTION OF DRAWINGS

[0018] FIG. 1 is a schematic diagram of a single station deployment provided by the related art;

[0019] FIG. 2 is a schematic diagram of a two-station deployment provided by the related art;

[0020] FIG. 3 is a flowchart of a communication method provided by the embodiment of the present application;

[0021] FIG. 4 is a flowchart of another communication method provided by the embodiment of the present application;

[0022] FIG. 5 is a schematic diagram of a two-station T1 deployment provided by the embodiment of the present application;

[0023] FIG. 6 is a schematic diagram of a two-station T2 deployment provided by the embodiment of the present application

[0024] FIG. 7 is a configuration diagram of an activation time pattern according to an embodiment of the present application;

[0025] FIG. 8 is a structural block diagram of a communication apparatus according to an embodiment of the present application;

[0026] FIG. 9 is a structural block diagram of another communication apparatus according to an embodiment of the present application;

[0027] FIG. 10 is a structural diagram of a communication device according to an embodiment of the present application. DETAILED DESCRIPTION

[0028] Embodiments of the present application will be described below with reference to the accompanying drawings. The present application will be described below with reference to the accompanying drawings. The examples described below are intended to explain the present application, and are not intended to limit the scope of the present application.

[0029] With the continuous development of radio technology, a variety of wireless services have emerged in large numbers. In traditional wireless communication, a basic network or cell can include a central node and multiple terminal nodes, for example, the communication between a base station and multiple user terminals (UE) in a cellular network, including 4G, 5G and 6G communication; the communication between an access point (AP) and a station (STA) in a wireless local area network; the communication between a master node and a slave node in a wireless local area network (including Bluetooth); the communication between a G node (management node) and a T node (terminal node) in new short-range communication (such as star flash communication); etc. In the above wireless communication, the communication from the central node to the terminal node is generally referred to as downlink (DL); and the communication from the terminal node to the central node is referred to as uplink (UL); the direct communication between terminal nodes is referred to as side link (SL); and the communication between central nodes is referred to as peer-to-peer communication (PL). The above wireless communication methods and wired communication methods can be collectively referred to as legacy link (LL). In the following description, the base station (BS) is used to represent the central node, and the UE is used to represent the terminal node in the legacy link. If DL and UL use different frequency spectrums or frequency bands for duplex communication, it is generally referred to as frequency division duplex (FDD), for example, using a pair of frequency spectrums for FDD communication. If DL and UL use the same frequency spectrum at different times for communication, it is generally referred to as time division duplex (TDD). Broadly speaking, using different sub-bands for full duplex on a TDD spectrum also belongs to FDD, which is also referred to as FDD here. For FDD, it includes at least one DL frequency spectrum for DL communication and at least one UL frequency spectrum for UL communication.

[0030] The devices of the conventional communication, whether the central node or the terminal node, generally consume high energy and need power supply or battery for power supply, and the cost of manufacturing and maintenance is high. From this aspect, the conventional communication can also be called active communication; on the other hand, some large-scale commercial scene use cases (warehouse, logistics, supply chain, smart home, environmental monitoring, intelligent farming and herding, finding objects, etc.) require small size, low cost and maintenance free, without battery but from the periodic environment to obtain energy, and the IoT device with longer life cycle. The ultra-low power consumption IoT device that obtains energy from the surrounding environment is called Ambient-IoT (Ambient-IoT) or Passive-IoT (Passive-IoT).

[0031] From the perspective of A-IoT wireless communication, the devices participating in A-IoT communication can include:

[0032] A-IoT master node (such as Reader): can identify and read and write A-IoT secondary nodes through communication, which is also called reader (Reader), reader and interrogator in related technologies, and the master node can be a central node in the traditional network, such as a base station, an AP (access point), a G node, a relay or an intermediate node, or a terminal node in the traditional network, such as a UE, a STA, a T node, etc. Here, it is not limited, and in the following, the A-IoT master node will be referred to as Reader.

[0033] A-IoT secondary node (such as Tag): low-cost IoT device, generally without battery, can respond to the communication of the master node, and the general narrow-sense A-IoT device refers to the secondary node, tag, etc. In the following, the A-IoT secondary node will be referred to as tag.

[0034] From the perspective of A-IoT system, in addition to the above master node and secondary node, it can also include:

[0035] Network side devices, including devices for configuring and managing communication, background databases, servers, base stations and other high-level network entities. These network devices can be deployed separately, or can be deployed with the reader.

[0036] Special energy supply device or special carrier wave (CW) transmitter, for example, A-IoT tag power supply can come from the surrounding environment, such as light energy, radio frequency energy, etc., can also use energy supply device to provide these energy to tag, these devices can be deployed with Reader in the same station or can be deployed separately, in a broad sense, such devices can be considered as a special Reader, hereinafter such devices are referred to as carrier wave transmitter (CWT).

[0037] For the convenience of description, the communication from Reader to tag can be referred to as forward communication (Forward Link, FL), and the signal is referred to as forward signal or FL signal; while the communication from tag to Reader is referred to as reverse communication (Return / Reverse Link, RL), and the signal is referred to as reflection signal or RL signal. In order to reduce the complexity of the tag, the tag uses backscattering to send RL information to the Reader, and uses envelope detection to receive FL information from the Reader. In the process of backscattering (also referred to as backscattering) communication, that is, RL communication, the Reader sends CW to the tag, and receives RL signal from the tag. The tag generates RL signal carrying information by reflecting CW. It can be seen that during RL communication, CW and RL signal carrying information exist at the same time. According to different implementations of RL communication, it can be divided into two types of deployment:

[0038] Mono-static deployment: the Reader sending CW and the Reader receiving backscattering RL signal are the same Reader or are deployed in the same station. FIG. 1 is a schematic diagram of an implementation of mono-static deployment provided by the related art. As shown in FIG. 1, the Reader needs to receive RL signal while sending CW. The power of CW at the Reader side is much larger than the power of RL signal, which puts high requirements on the receiving capability of the Reader, such as supporting full duplex. Generally, the Reader can also send FL signal carrying information to the tag for FL communication. The FL communication is generally time-division with the RL communication.

[0039] Bi-static deployment: the Reader sending CW and the Reader receiving backscattering RL signal are different Readers or are deployed separately. The requirements on the Reader are reduced in this deployment, that is, the Reader does not need to transmit and receive at the same time, and does not need to support full duplex.

[0040] Figure 2 is a schematic diagram of an implementation of a two-station deployment provided by the related art. A typical two-station deployment is that a Reader receiving RL signals and a reader transmitting FL signals are deployed in the same reader or co-station (denoted as Reader), and another reader only transmits CW, i.e., CWT. Such a deployment is shown in Figure 2.

[0041] Such a two-station deployment can avoid supporting full duplex, but needs to consider coordination of CWT transmitting CW and FL and RL communications performed by the Reader. It needs to consider that the Reader or other network devices can control the transmission of the CWT to meet A-IoT communication while avoiding interference. For example, if RL communication is to be performed, the CWT is required to be in an active transmission state to have completed backscatter communication, and if FL communication is to be performed, the CWT can be required to be in an inactive transmission state to avoid CW interference with tag reception of FL signals.

[0042] In an embodiment, Figure 3 is a flowchart of a communication method provided by the embodiment. The embodiment is applied to a case where a two-station deployment is used for carrier control in an environmental Internet of Things communication scenario. The embodiment can be performed by a first communication device. Illustratively, the first communication device can be a master node in A-IoT. For example, the first communication device can be a Reader. As shown in Figure 3, the embodiment includes S110-S120.

[0043] S110, transmitting a forward signal to a second communication device.

[0044] In an example, the second communication device can be a secondary node in A-IoT, for example, the second communication device can be a tag (Tag) device. In an example, the first communication device can transmit a forward signal to one or more second communication devices, for example, a unicast manner can be used to transmit a forward signal to one second communication device, or a broadcast manner can be used to transmit a forward signal to multiple second communication devices.

[0045] S120, receiving a reflected signal generated by backscatter of a carrier by a second communication device; wherein the carrier is transmitted according to pre-determined transmission configuration information; and the transmission configuration information is used to configure transmission parameters of the third communication device transmitting the carrier.

[0046] In an example, the third communication device is a carrier only for transmission (CWT). For example, the third communication device can be a CWT. In an example, the third communication device configures the transmission parameter of the carrier according to the pre-configured transmission configuration information, and then transmits the carrier configured according to the transmission configuration information to the second communication device. The second communication device backscatters the carrier to generate a corresponding reflection signal, and transmits the reflection signal to the first communication device, thereby avoiding the case that the transmission process of the carrier in the related art interferes with the reception of the forward signal by the second communication device.

[0047] In an embodiment, the transmission configuration information includes one of the following: transmission control information and transmission indication information. The transmission control information is used to set the transmission parameter of the carrier transmitted by the third communication device. The transmission indication information is used to indicate the transmission parameter of the carrier transmitted by the third communication device. In an example, the transmission configuration information can be provided by the first communication device or by another network entity. In an example, the transmission control information used to set the transmission parameter of the carrier transmitted by the third communication device can be provided by the first communication device. In an example, the transmission indication information used to indicate the transmission parameter of the carrier transmitted by the third communication device can be provided by the third communication device or another network entity.

[0048] In an embodiment, the reception time of the reflection signal is within the active time of the carrier transmitted by the third communication device. In an example, the reception time of the reflection signal refers to the time used by the first communication device to receive the reflection signal. The time used by the first communication device to receive the reflection signal is within the active time of the carrier transmitted by the third communication device. In an example, the first communication device can indicate at least one second communication device to generate a reflection signal by backscattering by transmitting a forward signal. The first communication device can control or schedule the resource or resource range of the second communication device to transmit the reflection signal. The first communication device expects or guarantees that the time of the second communication device to transmit the reflection signal is within the active time of the carrier.

[0049] In an embodiment, the transmission parameter includes at least one of the following: the active time or the deactivation time of the carrier transmission; the transmission frequency of the carrier; the transmission power of the carrier; the transmission direction of the carrier; and the transmission format of the carrier. In an example, the active time of the carrier transmission is used to represent the time when the third communication device starts to transmit the carrier. The deactivation time of the carrier transmission is used to represent the time when the third communication device stops transmitting the carrier.

[0050] In an example, when the third communication device has the capability of transmitting multiple carriers simultaneously, the transmission parameters can further include the number of transmitted carriers; for each transmitted carrier, there is at least one of the following transmission parameters corresponding to the carrier: the activation time or the deactivation time of the carrier transmission; the transmission frequency of the carrier; the transmission power of the carrier; the transmission direction of the carrier; the transmission format of the carrier, and so on.

[0051] For back-reflection communication, the reflection signal is generated depending on the carrier, in terms of time, the transmission time of the reflection signal is within the activation time of the carrier, and in the case that the first communication device transmits a forward signal to the second communication device, triggers the second communication device to respond and receive the reflection signal reflected by the second communication device, the time when the second communication device transmits the reflection signal needs to be within the time when the third communication device activates the transmission carrier. In terms of frequency, the transmission frequency of the reflection signal is related to the frequency of the carrier, for example, the transmission frequency of the reflection signal can be determined by the frequency of the carrier and a frequency offset, which can be controlled by the first communication device. In addition, the reflection signal is generated by the second communication device modulating the reflection carrier, and the transmission power of the reflection signal is generally positively correlated with the power of the carrier. Since the first communication device can detect the carrier and the reflection signal simultaneously, and the transmission power of the carrier is generally greater than the transmission power of the reflection signal, the first communication device needs to eliminate the interference of the carrier to better receive the reflection signal. In summary, the behavior of the third communication device transmitting the carrier needs to be controllable to better perform the above-mentioned two-station deployment, therefore, the first communication device itself can control the transmission parameters of the third communication device transmitting the carrier, or other network entities control the transmission parameters of the third communication device transmitting the carrier and these transmission parameters can be obtained by the first communication device, or a combination of the two (i.e. some parameters are controlled by the first communication device, and some parameters are controlled by other network entities and informed to the first communication device). It should be noted that the transmission control information and the transmission indication information in the embodiments of the present application can include explicit indication and / or implicit indication, wherein the explicit indication is generally to indicate the related information using specific signaling or signaling field, and the implicit indication is generally to obtain the related information according to the characteristics or parameters of the detected signal and the preset rules.

[0052] In an embodiment, the transmission control information and the transmission indication information each comprises at least one of: an activation time information of the carrier transmission; a transmission frequency information of the carrier; a transmission power information of the carrier; a transmission direction information of the carrier; a transmission format information of the carrier. In an example, the activation time information of the carrier transmission can comprise information related to the activation and / or deactivation time of the carrier transmission. In an example, the transmission frequency information of the carrier refers to the frequency when the third communication device activates the transmission carrier; the transmission power information of the carrier refers to the power when the third communication device activates the transmission carrier; the transmission direction information of the carrier refers to the transmission direction when the third communication device activates the transmission carrier; the transmission format information of the carrier refers to the transmission format adopted by the third communication device when transmitting the carrier.

[0053] In an embodiment, the activation time information is used to indicate one of: an activation time pattern; a time pattern of the ambient IoT communication. In an example, the activation time pattern can comprise a time pattern of activation and / or deactivation, i.e. comprising the position of the activation time and / or the position of the deactivation time within a time period.

[0054] In an embodiment, the activation time pattern is used to indicate the position of the activation time and / or the position of the deactivation time within a time period.

[0055] The time pattern of the ambient IoT communication is used to indicate the time position for the forward signal and / or the time position for the reflection signal within a time period. In an example, in case the activation time pattern is used to indicate the position of the activation or deactivation time for the carrier transmission within a time period, the position of the activation time for the carrier transmission within each time period is the same, and the position of the deactivation time for the carrier transmission within each time period is also the same. For example, a time period is 10s, the position of the activation time is the first 5s, and the position of the deactivation time is the last 5s, i.e. the first 5s within each time period is the position of the activation time, and the last 5s within each time period is the position of the deactivation time. In an example, the third communication device needs to deactivate the transmission carrier in the time period of the use of the forward signal, and needs to activate the transmission carrier in the time period of the use of the reflection signal.

[0056] In one embodiment, the activation time information is further used to indicate at least two of the following: the start position, end position, and duration of the activation time and / or deactivation time; and at least two of the start position, end position, and duration of the forward signal and / or reflection information. In one example, the first communication device, the third communication device, or other network entity may dynamically provide the activation time information, wherein the start position of the activation time can be understood as the start time of enabling the third communication device to transmit a carrier; the end time of the activation time can be understood as the end time of enabling the third communication device to transmit a carrier; the end position of the deactivation time can be understood as the end time of disabling the third communication device to transmit a carrier; the start position of the deactivation time can be understood as the start time of disabling the third communication device to transmit a carrier; the duration of the activation time refers to the length of time during which the third communication device can transmit a carrier; and the duration of the deactivation time refers to the length of time during which the third communication device stops transmitting a carrier. In one example, the start position of the activation time can also be the end time of the deactivation time, and similarly, the end position of the activation time can also be the start position of the deactivation time.

[0057] In one example, the start position and duration of the activation and / or deactivation times can be dynamically set; that is, a start position is dynamically provided to activate or deactivate carrier transmission, and the duration of activation or deactivation is indicated. In another example, the start and end positions of the activation and / or deactivation times can be dynamically set; that is, a start position is dynamically provided to activate or deactivate carrier transmission, and an end position is provided to activate or deactivate carrier transmission. In yet another example, the end position and duration of the activation and / or deactivation times can be dynamically set; that is, an end position is dynamically provided to activate or deactivate carrier transmission, and the duration of activation or deactivation is indicated.

[0058] In one embodiment, the carrier transmission frequency information includes at least one of the following: the center position of the frequency; the bandwidth of the frequency; the start position of the frequency; and the end position of the frequency.

[0059] In one embodiment, the carrier transmit power information includes at least one of the following: carrier transmit power level; carrier transmit power range; carrier transmit power spectral density; carrier power level in the first communication device; carrier power factor in the first communication device; and carrier path loss factor in the first communication device.

[0060] In one embodiment, the carrier transmission direction information includes at least one of the following: the carrier transmission beam direction; the carrier transmission beam direction identifier; the reference signal corresponding to the carrier; the reference signal identifier corresponding to the carrier; and the transmission configuration indication state corresponding to the carrier.

[0061] In one embodiment, the carrier transmission format information includes: a single-carrier unmodulated signal format; a single-carrier constant-amplitude modulated signal format; and a multi-carrier format. In one example, the multi-carrier format can be an Orthogonal Frequency Division Multiplexing (OFDM) format. In one example, when the carrier carries some information to be transmitted, a single-carrier constant-amplitude modulated signal format can be used as the carrier transmission format so that the first communication device can analyze and process the information to be transmitted carried on the carrier. In one example, when the carrier does not carry any information, a single-carrier unmodulated signal format can be used as the carrier transmission format.

[0062] In one embodiment, the transmission time of the forward signal does not overlap with the activation time of the carrier transmitted by the third communication device. In one example, the first communication device itself can acquire resources for transmitting the forward signal, or resources for transmitting the forward signal can be allocated by other network entities (also referred to as network nodes). The first communication device expects or guarantees that the transmission time of the forward signal does not overlap with the activation time of the carrier transmitted by the third communication device, so as to ensure that the carrier transmission process does not interfere with the forward signal reception process.

[0063] In one embodiment, a first communication device sends a forward signal to a second communication device, triggering at least one second communication device to send a reflected signal; a third communication device sends a carrier signal as the carrier for the reflected signal sent by the second communication device. In one example, the first communication device sends a forward signal to the second communication device, triggering one or more second communication devices to perform back reflection based on the carrier signal sent by the third communication device, generating a corresponding reflected signal, and sending the reflected signal to the first communication device. In one example, the reflected signal is generated by the second communication device back reflecting the carrier signal sent by the third communication device.

[0064] In one embodiment, at least part of the transmission control information carries one of the following: a forward signal sent by the first communication device; or a communication signal sent by the first communication device. In one example, some or all of the transmission control information can be carried in the forward signal sent by the first communication device. For instance, in one example, the third communication device can decode the forward signal sent to the second communication device. By decoding or detecting the forward signal, the third communication device can obtain the transmission control information provided by the first communication device. In another example, the third communication device itself possesses the functions of the second communication device, and the first communication device can specifically transmit the forward signal or the information field in the forward signal carrying the aforementioned transmission control information to the third communication device. In yet another example, the first communication device can modulate the aforementioned transmission control information onto the high level of the forward signal. For example, constant amplitude modulation such as Frequency Shift Keying (FSK) / Phase Shift Keying (PSK) can be used to modulate the transmission control information onto the high-level time of the forward signal.

[0065] In one example, some or all of the transmission control information can be carried in the conventional communication signal sent by the first communication device. For example, in one instance, if the first communication device is a base station and the third communication device is a UE, the above information can be carried directly through downlink signals or transmitted through network relay. In another instance, if the first communication device is a UE and the third communication device is a base station, the above information can be carried directly through UL signals or transmitted through network relay. In yet another instance, if both the first and third communication devices are base stations or both are UEs, the two can transmit the above information through a direct link or through other network entities.

[0066] In one embodiment, the transmission indication information is obtained in one of the following ways: from the communication signals of other network entities; from the communication signals of a third communication device; or from the carrier wave transmitted by the third communication device. In one example, the first communication device may obtain some or all of the transmission indication information from the conventional communication signals of other network entities. For example, in one instance, the transmission of the third communication device is not controlled by the first communication device but by other network entities. In this case, the first communication device needs to obtain the carrier transmission parameters from the network entity. For example, both the third communication device and the first communication device are UEs and are controlled by the base station. In this case, the base station provides the carrier transmission parameters to the third communication device to control the transmission of the third communication device, and provides the carrier transmission indication information to the first communication device to provide the carrier transmission parameters.

[0067] In one example, the first communication device may obtain some or all of the transmission indication information from the conventional communication signal of the third communication device. For example, if the third communication device controls the transmission parameters of the carrier, it needs to notify the first communication device of the transmission parameters. For example, if the third communication device is a base station, it needs to provide the carrier transmission parameters to the first communication device through DL or other conventional communication methods.

[0068] In one example, the first communication device may obtain some or all of the transmission indication information from the carrier wave sent by the third communication device. For example, in one instance, the third communication device controls the transmission parameters of the carrier wave itself and modulates the transmission indication information into the carrier wave to provide it to the first communication device.

[0069] In one embodiment, Figure 4 is a flowchart of another communication method provided by an embodiment of this application. This embodiment is applied to a dual-site deployment communication scenario in an environmental IoT communication scenario. This embodiment can be executed by a second communication device. As shown in Figure 4, this embodiment includes: S210.

[0070] S210. Transmit a carrier according to pre-configured transmission parameters so that the second communication device generates a reflected signal with respect to the reflected carrier and sends the reflected signal to the first communication device; wherein the carrier is transmitted according to pre-determined transmission configuration information; the transmission configuration information is used to configure the transmission parameters of the carrier transmitted by the third communication device.

[0071] In one embodiment, the transmission configuration information includes one of the following: transmission control information and transmission indication information; wherein, the transmission control information is used to set the transmission parameters of the carrier transmitted by the third communication device; and the transmission indication information is used to indicate the transmission parameters of the carrier transmitted by the third communication device.

[0072] In one embodiment, the reception time of the reflected signal is within the activation time of the carrier transmitted by the third communication device.

[0073] In one embodiment, the transmission parameters include at least one of the following: the activation time or deactivation time of carrier transmission; the transmission frequency of the carrier; the transmission power of the carrier; the transmission direction of the carrier; and the transmission format of the carrier.

[0074] In one embodiment, both the transmission control information and the transmission indication information include at least one of the following: carrier transmission activation time information; carrier transmission frequency information; carrier transmission power information; carrier transmission direction information; and carrier transmission format information.

[0075] In one embodiment, the activation time information is used to indicate one of the following: activation time mode; time mode of environmental IoT communication.

[0076] In one embodiment, the activation time pattern is used to indicate the position of the activation time and / or the position of the deactivation time within a time period;

[0077] The timing pattern of environmental IoT communication is used to indicate the time position of forward signals and / or the time position of reflected signals within a time period.

[0078] In one embodiment, the activation time information is also used to indicate at least two of the following: the start position, end position, and duration of the activation time and / or deactivation time; and at least two of the start position, end position, and duration of the forward signal and / or reflection information.

[0079] In one embodiment, the carrier transmission frequency information includes at least one of the following: the center position of the frequency; the bandwidth of the frequency; the start position of the frequency; and the end position of the frequency.

[0080] In one embodiment, the carrier transmit power information includes at least one of the following: carrier transmit power level; carrier transmit power range; carrier transmit power spectral density; carrier power level in the first communication device; carrier power factor in the first communication device; and carrier path loss factor in the first communication device.

[0081] In one embodiment, the carrier transmission direction information includes at least one of the following: the carrier transmission beam direction; the carrier transmission beam direction identifier; the reference signal corresponding to the carrier; the reference signal identifier corresponding to the carrier; and the transmission configuration indication state corresponding to the carrier.

[0082] In one embodiment, the carrier transmission format information includes: single-carrier unmodulated signal format; single-carrier constant amplitude modulated signal format; and multi-carrier format.

[0083] In one embodiment, the transmission time of the forward signal does not overlap with the activation time of the carrier transmitted by the third communication device.

[0084] In one embodiment, a first communication device sends a forward signal to a second communication device, triggering at least one second communication device to send a reflected signal; a third communication device sends a carrier signal as the carrier for the reflected signal sent by the second communication device.

[0085] In one embodiment, the carrier information of at least part of the transmission control information includes one of the following: a forward signal transmitted by the first communication device; or a communication signal transmitted by the first communication device.

[0086] In one embodiment, the transmission indication information is obtained in one of the following ways: from the communication signals of other network entities; from the communication signals of a third communication device; or from the carrier wave transmitted by the third communication device.

[0087] It should be noted that the explanations of parameters such as transmission configuration information, transmission parameters, transmission control information, and transmission indication information in the communication method applied to the second communication device can be found in the descriptions of the corresponding parameters in the communication method applied to the first communication device, and will not be repeated here.

[0088] In the following four embodiments (i.e., Embodiments 1-4), taking the first communication device as Reader, the second communication device as tag, and the third communication device as CWT as examples, the carrier control process in the dual-station deployment scenario of environmental IoT communication is explained.

[0089] Figure 5 is a schematic diagram of a dual-site T1 deployment provided in an embodiment of this application, and Figure 6 is a schematic diagram of a dual-site T2 deployment provided in an embodiment of this application. For the above dual-site deployment, depending on the type of Reader, it can be further divided into various deployment scenarios. For example, a deployment where the Reader is a base station is called a T1 deployment, and a deployment where the Reader is a UE is called a T2 deployment. The way information is exchanged between the Reader and the CWT differs in different deployment scenarios. The embodiments will be described in conjunction with specific deployment scenarios later.

[0090] Example 1

[0091] CW, also known as carrier wave or continuous wave, effectively avoids the full-duplex problem of the Reader (sending CW while simultaneously receiving RL signals) in the dual-site deployment scenario described in this application. However, in a dual-site deployment, the Reader essentially strips away the CW transmission function. To avoid interference and complete A-IoT communication, the Reader needs to be able to know or control the CW transmission parameters. This means the Reader knows or controls the CW transmission parameters by providing CW transmission control information and / or by obtaining CW transmission indication information. Specifically, in a dual-site deployment, there may only be transmission control information, meaning the parameters for CWT CW transmission are primarily controlled by the Reader; or, there may only be transmission indication information, meaning the Reader does not control the CWT CW transmission parameters and needs to obtain transmission indication information from the CWT or other network entities; or, both transmission control and transmission indication information may be present, meaning the Reader controls some CW transmission parameters, while the CWT or other network entities control others. As can be seen, both transmission control information and transmission indication information are related to the transmission parameters of the CW. Generally, there may be some overlap between the transmission control information and the transmission indication information, but in more cases, they are complementary or do not contain each other. For example, if the Reader controls the activation / deactivation time of the CW, the transmission control information will include the relevant information. In this case, the Reader naturally does not need to obtain the activation / deactivation time of the CW from the transmission indication information.

[0092] The CW's transmission parameters are as described above and will not be repeated here; the contents of the CW's transmission control information or transmission indication information can be further illustrated as follows:

[0093] In one instance, the transmit control information or transmit instruction information may include information indicating the activation / deactivation time for CW transmission. Activation can be understood as turning on CW transmission, and deactivation can be understood as turning off CW transmission. The purpose of activating / deactivating CW transmission is to coordinate with the Reader in sending FL signals and receiving RL signals. For example, the RL signal must coincide with the CW activation time, and the FL signal should coincide with the CW deactivation time as much as possible. In one instance, the FL signal can also coincide with the CW activation time, but interference from CW to the FL signal should be avoided as much as possible, and the Reader should not receive RL signals during these CW activation times that overlap with the FL signal, and the tag should not reflect the RL signals generated by this part of CW.

[0094] Activation time information may include activation / deactivation time information, which can be indicated or configured in a semi-static, time-based manner, such as being semi-statically configured for CWT or indicated to the Reader. Here, "semi-static" means that once indicated, it will be valid for a long period of time.

[0095] In one instance, the activation time information is used to indicate the activation / deactivation time pattern. Generally, communication systems can define time units such as frames, subframes, time slots, and symbols. For example, a frame is 10 ms long, consisting of 10 1 ms subframes. Each subframe is further divided into several time slots, and each time slot contains several symbols. Based on these time units, a time period T can be designed, comprising several of the aforementioned time units. The relative positions of the activation and / or deactivation times within a time period T are configured or indicated, forming a time pattern. Each time period then has the same time pattern. In one instance, for the aforementioned time pattern, only the deactivation time can be indicated, with the remaining time being the activation time, or a flexible control time. During the flexible control time, CW transmission can be activated or deactivated as needed. Alternatively, only the activation time can be indicated, with the remaining time being the deactivation time or a flexible control time. Or, both activation and deactivation times can be indicated, with any remaining time being the flexible control time. Figure 7 is a schematic diagram of an activation time mode configuration provided in an embodiment of this application. As shown in Figure 7, in one time mode, deactivation time and activation time are indicated in periods n and n+1, while other times within this period are flexible control times. In one example, the CWT requires a certain switching time to switch from an active state to a deactivation state, for example, this switching time is called gap1. The CWT also requires a certain switching time to switch from a deactivation state to an active state, for example, this switching time is called gap2. Gap1 and gap2 can be the same or different; for example, generally gap2 is greater than gap1. Generally, the switching time is a characteristic of the CWT, and these characteristics need to be known by the Reader; that is, the switching time can be provided to the Reader as transmission indication information. In one example, the switching time can be located within the flexible control time or the deactivation time.

[0096] In one instance, this information indicates the timing pattern of A-IoT communication. For example, it might indicate the timing position for the FL signal within a time period and / or the timing position for the RL signal within a time period. Thus, the CWT needs to activate transmission as much as possible during the FL signal timing and activate transmission during the RL signal timing. In other words, the activation / deactivation timing pattern of CWT transmission is implicitly determined by the timing pattern of A-IoT communication. Similarly, a time period T can be designed based on a certain time unit, configuring or indicating the relative positions of the FL signal and / or RL signal within a period T, i.e., a timing pattern. Each time period then has the same timing pattern. In one instance, for the above timing pattern, only the FL signal time can be indicated, and the remaining time can be considered the RL signal time or flexible time; or only the RL signal time can be indicated, and the remaining time can be considered the FL signal time or flexible time; or both the FL signal time and RL signal time can be indicated, with any remaining time being flexible time. During RL signal timing, CWT must activate CW transmission. During FL signal timing, CWT should avoid transmitting CW as much as possible. During flexible timing, CW transmission should be activated / deactivated as needed, or activated or deactivated by default.

[0097] In one example, the time mode or activation / deactivation time mode of the above-mentioned A-IoT communication can be indicated by a mode number. For example, the Reader and CWT can correspond one or more time modes to one or more numbers through pre-agreed agreements and configurations. Only the number needs to be indicated when indicating the time mode. This can reduce the overhead of transmitting configuration information.

[0098] Activation / deactivation time information can be dynamically indicated in time intervals, for example, dynamically indicated to CWT or to the Reader:

[0099] In one instance, this information indicates the start position and duration of activation and / or deactivation. For example, it can dynamically provide indication information to activate or deactivate the CW's transmission from a starting position, and indicate the duration of activation or deactivation. For instance, the Reader can carry this information in the transmission control information, notifying the CWT to activate the CW's transmission within an indicated time period. The aforementioned start position can be indicated using an absolute time point or a relative time point, such as relative to a time reference point T. ref Offset by a quantity T offset Obtain the starting time, which is used as the starting position, for example, T. ref It can be the time associated with a communication signal carrying information about the activation / deactivation time, T offsetThis is an activation / deactivation time information indication or a predefined time duration; the duration of the above time can be an activation / deactivation time information indication or a predefined time duration.

[0100] In one instance, this information indicates the start position and duration of the FL and / or RL signals. Similar to the semi-static timing pattern for A-IoT communication, timing information for A-IoT communication over a time period can also be provided dynamically to implicitly indicate the activation / deactivation timing of the CW. The method for indicating the start position and duration is similar to the method described above for directly indicating the start position and duration of activation / deactivation, and will not be repeated here.

[0101] In one instance, dynamic and semi-static indicators can be combined. For example, a semi-static indicator time pattern can be used. If there is flexible control time or flexible time in the time pattern, dynamic indicator information can continue to be used to indicate the CW activation / deactivation time information on these times.

[0102] It should be noted that the information listed below may also be dynamic indicators, semi-static indicators, or a combination of both, which will not be elaborated further.

[0103] In one instance, the transmit control information or transmit instruction information may include transmit frequency information for indicating the CW; for example, the transmit frequency information indicates an absolute frequency point that represents the center position of the CW's transmit frequency, or indicates a center frequency point plus bandwidth information, or indicates the start position of a frequency and a bandwidth or end position of the frequency.

[0104] In one instance, the transmit control information or transmit indication information may include transmit power information for indicating the CW (Concurrent Wave). The transmit power of the RL (Redirect Relay) signal can be indirectly controlled by controlling the transmit power of the CW, thus avoiding interference. The specific content of this information has been described above and will not be repeated here. In one example, the CW transmit power information generally refers to the power when the CWT (Concurrent Wave Activation Tool) activates the CW. In another example, the CW transmit power information can also be used in conjunction with a time pattern. For example, within a defined time period, the first set of times uses the first CW transmit power, the second set of times uses the second CW transmit power, and so on, thus defining the CW transmit power information corresponding to different times. Similarly, the CW transmit power information can also dynamically indicate a time period.

[0105] In one instance, the transmit control information or transmit indication information may include transmit direction information for indicating the CW (Continuous Wave) signal. By controlling the direction of the CWT (Continuous Transmitter) transmitting the CW, communication with a tag in a specific area can be achieved. Using beamforming can also increase the CW energy in a specified direction, improving the quality of the RL (Resonance Array) signal. In one example, the CW transmit direction information generally refers to the transmit direction when the CWT activates and transmits the CW. In another example, the CW transmit direction information can also be used in conjunction with a time pattern. For example, within a defined time period, the first set of times uses the first CW transmit direction, the second set of times uses the second CW transmit direction, and so on, thus defining the CW transmit direction information corresponding to different times. Similarly, the CW transmit direction information can also dynamically indicate a time period.

[0106] In one example, the transmit control information or transmit indication information may include transmit format information indicating the CW (Concurrent Wave) transmission. Traditional communication signals may have multiple formats, most typically single-carrier and multi-carrier formats, such as OFDM, a typical multi-carrier format. For CW transmission, the single-carrier format is simpler and has a more stable signal envelope, but the use of multi-carrier CW is not excluded. Therefore, the CW transmission format can be indicated through transmit control information or transmit indication information. Specific typical formats include: single-carrier (single carrier / tone) unmodulated signal format, single-carrier (single carrier / tone) constant amplitude modulated signal format, or multi-carrier format, such as OFDM format. In one example, the CW transmission format information generally refers to the transmission format when CWT (Concurrent Wave Activation) is used to transmit CW. In one example, the CW transmission format information can also be used in conjunction with a time pattern. For example, within a defined time period, the first set of times uses the first CW transmission format, the second set of times uses the second CW transmission format, and so on, thus defining the CW transmission format information corresponding to different times. Similarly, the CW transmission format information can also dynamically indicate a time period corresponding to the CW transmission format information.

[0107] Example 2

[0108] This example is a T1 deployment. The Reader (denoted as R) acts as a base station, which has scheduling and wireless resource management functions. Generally, it can control the transmission parameters of CWT to improve the efficiency of Ambient IoT communication.

[0109] In one instance, there exists a UE-like entity on the CWT, or an entity with some or all of the UE functions. This entity can obtain CW transmission control information from the Reader's DL signal, and the CWT can control the CW's transmission parameters based on the transmission control information.

[0110] In one instance, R needs to communicate with one or more tags, for example, to inventory / identify nearby tags or read / write information about surrounding tags. R sends an FL signal to trigger a response from a tag that meets certain conditions in its vicinity. The FL signal includes signaling sent to the tag, which can control certain parameters of the tag sending an RL signal. For example, the signaling that controls the RL parameters includes at least one of the following: signaling indicating the time-domain parameters of the RL signal and signaling indicating the frequency-domain parameters of the RL signal.

[0111] The signaling indicating the time-domain parameters of the RL signal may include, but is not limited to, one of the following: signaling for determining the start position of transmitting the RL signal; signaling for the transmission duration or duration range of the RL signal; signaling for determining the symbol length of the RL signal, etc. Since the RL signal depends on CW generation, CWT needs to activate the transmission CW in these time domains.

[0112] Signaling indicating the frequency domain parameters of the RL signal may include, but is not limited to, one of the following: signaling for determining the frequency domain position of the RL signal; signaling for determining the offset of the RL signal relative to the CW; and signaling for determining the bandwidth of the RL signal. The frequency domain of the RL signal may depend on the frequency of the CW and the control signaling of R. In order for R to receive the RL signal better, R needs to control the frequency domain parameters of the CW transmitted by the CWT.

[0113] In one instance, R needs to send transmit control information to CWT to control CWT's transmit parameters. The transmit parameters and transmit control information are as described in other embodiments of this application. Under a T1 deployment, R can carry the transmit control information in at least one of the following ways:

[0114] Transmission control information is carried in DL signals, for example, by transmitting Downlink Control Information (DCI), Media Access Control-Control Element (MAC CE), or at least one of other higher-layer signaling. For instance, general semi-static information can be transmitted via higher-layer signaling, while dynamic information can be carried via DCI and MAC CE.

[0115] The carrying of the signal in the FL has already been described above and will not be repeated here.

[0116] The transmission control information can be carried in other conventional signals, for example, through wired or wireless relays by other network entities, to transmit the transmission control information to the CWT.

[0117] In one instance, surrounding tags receive the FL signal sent by R. If a tag needs to respond to R, it needs to transmit the RL signal via back reflection on the CW transmitted by CWT. The parameters of the RL signal transmitted by the tag should be consistent with the parameters of the RL signal indicated by R. Generally, tags do not need to know the deployment status and type of the Reader; the tag's behavior is the same regardless of whether it is a single-site or dual-site deployment.

[0118] In one example, R receives RL signals from one or more tags. R controls the CWT (Continuous Transmission Wing) and / or acquires the CWT's transmission indication information for transmitting CW (Continuous Transmission Wing) via transmission control information. This allows R to know the CW's transmission parameters in advance, thus enabling better understanding of the RL signal parameters and efficient reception. In another example, R can also measure the RL signal and / or CW. If the measurement results show that the CW's transmission parameters do not meet R's expectations, R can adjust the CWT's CW transmission parameters via transmission control information. For example, if R finds that the CW's power is too low, it can instruct the CWT to increase the CW's transmission power. Adjustments to other transmission parameters are similar and will not be elaborated further. Additionally, R can use the known CW transmission parameters to eliminate CW interference with the RL signal.

[0119] In one instance, if the CWT controls certain CW transmission parameters, it needs to transmit these parameters directly or indirectly to the R via transmission indication information. For example, the R can allocate UL resources to the CWT for the CWT to transmit UL signals to provide this transmission indication information.

[0120] In one instance, if some transmission parameters of the CWT are controlled by network entities other than the CWT and R, then the CWT needs to obtain information related to these transmission parameters through transmission control information, and the R needs to obtain information related to these transmission parameters through transmission instruction information.

[0121] In one instance, the Reader can communicate with a single tag, such as reading tag information or writing information to a tag, or it can emit an FL signal to a group of tags to trigger their responses. However, the processing of the CW described above is basically similar, and will not be repeated here or in subsequent examples.

[0122] Example 3

[0123] This example demonstrates a T2 deployment. The Reader (denoted as R) acts as the UE, and its resource usage generally falls into two categories: one is scheduling from the base station or other network entities (Case 1), and the other is resource selection by the UE itself (Case 2). In Case 1, R needs to obtain resource authorization from the base station for communication. This communication can include traditional communication or A-IoT communication.

[0124] In one instance, there exists a UE-like entity on the CWT, or an entity with some or all of the UE's functions, which can communicate with the base station via DL / UL and / or with the UE via SL.

[0125] In one instance, R needs to communicate with one or more tags, for example, to inventory / identify nearby tags or read / write surrounding tag information. R sends an FL signal to trigger a response from a tag that meets the conditions. The FL signal includes signaling sent to the tag, which can control certain parameters of the tag sending the RL signal. The signaling that controls the RL parameters includes at least one of the following: time-domain parameter signaling, frequency-domain parameter signaling, as described in Example 2, which will not be repeated here.

[0126] In one instance, if R can control certain CW transmission parameters, R needs to provide transmission control information to the CWT to control the CW's transmission parameters. Transmission parameters and transmission control information are as described in other embodiments of this application. In a T2 deployment, R can carry transmission control information through at least one of the following methods:

[0127] The transmission control information is carried in the SL signal, for example, in the transmission of SCI (sidelink control information), MAC CE, or at least one of other higher-layer signaling.

[0128] It is carried in the FL signal, as described above, and will not be repeated here;

[0129] The transmission control information can be carried in other conventional signals, for example, through wired or wireless relay via base stations or other network entities, to transmit the transmission control information to the CWT.

[0130] In one instance, surrounding tags receive the FL signal sent by R. If a tag needs to respond to R, it needs to transmit the RL signal via back reflection on the CW transmitted by CWT. The parameters of the RL signal transmitted by the tag should be consistent with the parameters of the RL signal indicated by R. Generally, tags do not need to know the deployment status and type of the Reader; the tag's behavior is the same regardless of whether it is a single-site or dual-site deployment.

[0131] In one example, R receives RL signals of one or more tags. R controls the CWT (Continuous Transmission Wing) and / or acquires the CWT's transmission indication information for transmitting CW (Continuous Transmission Wing) through transmission control information. This allows R to know the CW's transmission parameters in advance, thus enabling better understanding of the RL signal parameters and subsequent reception. In another example, R can also measure the RL signal and / or CW. If the measurement results show that the CW's transmission parameters do not meet R's expectations, R can adjust the CWT's CW transmission parameters through the transmission control parameters. R can then use the known CW transmission parameters to eliminate CW interference with the RL signal. In yet another example, R can also notify the base station or other network entities of the measurement results to assist them in adjusting the CWT's CW transmission parameters.

[0132] In one instance, if the CWT itself controls certain CW transmission parameters, it needs to be transmitted directly or indirectly to R via transmission instruction information.

[0133] In one instance, if some transmission parameters of the CWT are controlled by other network entities besides the CWT and R, such as a base station, then the CWT needs to obtain information related to these transmission parameters through transmission control information, and the R needs to obtain information related to these transmission parameters through transmission indication information.

[0134] Example 4

[0135] Dual-site deployment can operate on TDD spectrum, unlicensed spectrum, or FDD spectrum.

[0136] In particular, for the FDD spectrum, the operating frequencies and behaviors of R and CW vary greatly depending on the dual-site deployment:

[0137] For T1 deployment, the FL signal transmitted by R is in the DL spectrum, while the CW signal transmitted by CWT and the RL signal transmitted by tag should be in the UL spectrum. R, as the base station, only needs to receive signals in the UL spectrum.

[0138] For T2 deployment, the FL signal transmitted by R should be on the UL spectrum, while the CW signal transmitted by CWT and the RL signal transmitted by tag should be on the DL spectrum. R, as a UE, only needs to receive signals on the DL spectrum.

[0139] In one embodiment, FIG8 is a structural block diagram of a communication device provided in an embodiment of this application. This embodiment is applied to a first communication device. As shown in FIG8, the communication device in this embodiment includes: a transmitter 310 and a receiver 320.

[0140] Transmitter 310 is configured to send a forward signal to a second communication device.

[0141] Receiver 320 is configured to receive a reflected signal generated by a back-reflected carrier of a second communication device; wherein the carrier is transmitted according to predetermined transmission configuration information; the transmission configuration information is used to configure the transmission parameters of the carrier transmitted by a third communication device.

[0142] In one embodiment, the transmission configuration information includes one of the following: transmission control information and transmission indication information; wherein, the transmission control information is used to set the transmission parameters of the carrier transmitted by the third communication device; and the transmission indication information is used to indicate the transmission parameters of the carrier transmitted by the third communication device.

[0143] In one embodiment, the reception time of the reflected signal is within the activation time of the carrier transmitted by the third communication device.

[0144] In one embodiment, the transmission parameters include at least one of the following: the activation time or deactivation time of carrier transmission; the transmission frequency of the carrier; the transmission power of the carrier; the transmission direction of the carrier; and the transmission format of the carrier.

[0145] In one embodiment, both the transmission control information and the transmission indication information include at least one of the following: carrier transmission activation time information; carrier transmission frequency information; carrier transmission power information; carrier transmission direction information; and carrier transmission format information.

[0146] In one embodiment, the activation time information is used to indicate one of the following: activation time mode; time mode of environmental IoT communication.

[0147] In one embodiment, the activation time pattern is used to indicate the position of the activation time and / or the position of the deactivation time within a time period;

[0148] The timing pattern of environmental IoT communication is used to indicate the time position of forward signals and / or the time position of reflected signals within a time period.

[0149] In one embodiment, the activation time information is also used to indicate at least two of the following: the start position, end position, and duration of the activation time and / or deactivation time; and at least two of the start position, end position, and duration of the forward signal and / or reflection information.

[0150] In one embodiment, the carrier transmission frequency information includes at least one of the following: the center position of the frequency; the bandwidth of the frequency; the start position of the frequency; and the end position of the frequency.

[0151] In one embodiment, the carrier transmit power information includes at least one of the following: carrier transmit power level; carrier transmit power range; carrier transmit power spectral density; carrier power level in the first communication device; carrier power factor in the first communication device; and carrier path loss factor in the first communication device.

[0152] In one embodiment, the carrier transmission direction information includes at least one of the following: the carrier transmission beam direction; the carrier transmission beam direction identifier; the reference signal corresponding to the carrier; the reference signal identifier corresponding to the carrier; and the transmission configuration indication state corresponding to the carrier.

[0153] In one embodiment, the carrier transmission format information includes: single-carrier unmodulated signal format; single-carrier constant amplitude modulated signal format; and multi-carrier format.

[0154] In one embodiment, the transmission time of the forward signal does not overlap with the activation time of the carrier transmitted by the third communication device.

[0155] In one embodiment, a first communication device sends a forward signal to a second communication device, triggering at least one second communication device to send a reflected signal; a third communication device sends a carrier signal as the carrier for the reflected signal sent by the second communication device.

[0156] In one embodiment, the carrier information of at least part of the transmission control information includes one of the following: a forward signal transmitted by the first communication device; or a communication signal transmitted by the first communication device.

[0157] In one embodiment, the transmission indication information is obtained in one of the following ways: from the communication signals of other network entities; from the communication signals of a third communication device; or from the carrier wave transmitted by the third communication device.

[0158] The communication device provided in this embodiment is configured to implement the communication method applied to the first communication device in the embodiment shown in FIG3. The implementation principle and technical effect of the communication device provided in this embodiment are similar, and will not be described again here.

[0159] In one embodiment, FIG9 is a structural block diagram of another communication device provided in this application. This embodiment is applied to a second communication device. As shown in FIG9, the communication device in this embodiment includes: a transmitter 410.

[0160] Transmitter 410 is configured to transmit a carrier according to pre-configured transmission parameters, so that the second communication device generates a reflected signal with respect to the reflected carrier and sends the reflected signal to the first communication device; wherein the carrier is transmitted according to pre-determined transmission configuration information; the transmission configuration information is used to configure the transmission parameters of the carrier transmitted by the third communication device.

[0161] In one embodiment, the transmission configuration information includes one of the following: transmission control information and transmission indication information; wherein, the transmission control information is used to set the transmission parameters of the carrier transmitted by the third communication device; and the transmission indication information is used to indicate the transmission parameters of the carrier transmitted by the third communication device.

[0162] In one embodiment, the reception time of the reflected signal is within the activation time of the carrier transmitted by the third communication device.

[0163] In one embodiment, the transmission parameters include at least one of the following: the activation time or deactivation time of carrier transmission; the transmission frequency of the carrier; the transmission power of the carrier; the transmission direction of the carrier; and the transmission format of the carrier.

[0164] In one embodiment, both the transmission control information and the transmission indication information include at least one of the following: carrier transmission activation time information; carrier transmission frequency information; carrier transmission power information; carrier transmission direction information; and carrier transmission format information.

[0165] In one embodiment, the activation time information is used to indicate one of the following: activation time mode; time mode of environmental IoT communication.

[0166] In one embodiment, the activation time pattern is used to indicate the position of the activation time and / or the position of the deactivation time within a time period;

[0167] The timing pattern of environmental IoT communication is used to indicate the time position of forward signals and / or the time position of reflected signals within a time period.

[0168] In one embodiment, the activation time information is also used to indicate at least two of the following: the start position, end position, and duration of the activation time and / or deactivation time; and at least two of the start position, end position, and duration of the forward signal and / or reflection information.

[0169] In one embodiment, the carrier transmission frequency information includes at least one of the following: the center position of the frequency; the bandwidth of the frequency; the start position of the frequency; and the end position of the frequency.

[0170] In one embodiment, the carrier transmit power information includes at least one of the following: carrier transmit power level; carrier transmit power range; carrier transmit power spectral density; carrier power level in the first communication device; carrier power factor in the first communication device; and carrier path loss factor in the first communication device.

[0171] In one embodiment, the carrier transmission direction information includes at least one of the following: the carrier transmission beam direction; the carrier transmission beam direction identifier; the reference signal corresponding to the carrier; the reference signal identifier corresponding to the carrier; and the transmission configuration indication state corresponding to the carrier.

[0172] In one embodiment, the carrier transmission format information includes: single-carrier unmodulated signal format; single-carrier constant amplitude modulated signal format; and multi-carrier format.

[0173] In one embodiment, the transmission time of the forward signal does not overlap with the activation time of the carrier transmitted by the third communication device.

[0174] In one embodiment, a first communication device sends a forward signal to a second communication device, triggering at least one second communication device to send a reflected signal; a third communication device sends a carrier signal as the carrier for the reflected signal sent by the second communication device.

[0175] In one embodiment, the carrier information of at least part of the transmission control information includes one of the following: a forward signal transmitted by the first communication device; or a communication signal transmitted by the first communication device.

[0176] In one embodiment, the transmission indication information is obtained in one of the following ways: from the communication signals of other network entities; from the communication signals of a third communication device; or from the carrier wave transmitted by the third communication device.

[0177] The communication device provided in this embodiment is configured to implement the communication method applied to the second communication device in the embodiment shown in FIG4. The implementation principle and technical effect of the communication device provided in this embodiment are similar, and will not be described again here.

[0178] In one embodiment, FIG10 is a schematic diagram of the structure of a communication device provided in an embodiment of this application. As shown in FIG10, the device provided in this application includes: a processor 510, a memory 520, and a communication module 530. The number of processors 510 in the device can be one or more; FIG10 shows one processor 510 as an example. The number of memories 520 in the device can be one or more; FIG10 shows one memory 520 as an example. The processor 510, memory 520, and communication module 530 of the device can be connected via a bus or other means; FIG10 shows a connection via a bus as an example. In this embodiment, the device can be a first communication device or a second communication device. In one example, the communication module 530 can be a transmitter and / or a receiver.

[0179] The memory 520, as a computer-readable storage medium, can be configured to store software programs, computer-executable programs, and modules, such as program instructions / modules corresponding to the device in any embodiment of this application (e.g., transmitter 310 and receiver 320 applied to the communication apparatus of the first communication device). The memory 520 may include a program storage area and a data storage area, wherein the program storage area may store an operating system, an application program required for at least one function, and the data storage area may store data created based on the use of the device. Furthermore, the memory 520 may include high-speed random access memory and may also include non-volatile memory, such as at least one disk storage device, flash memory device, or other non-volatile solid-state storage device. In some instances, the memory 520 may further include memory remotely located relative to the processor 510, and these remote memories can be connected to the device via a network. Examples of such networks include, but are not limited to, the Internet, corporate intranets, local area networks, mobile communication networks, and combinations thereof.

[0180] When the communication device is the first communication device, the device provided above can be configured to execute the communication method applied to the first communication device provided in any of the above embodiments, and has the corresponding functions and effects.

[0181] When the communication device is a second communication device, the device provided above can be configured to execute the communication method applied to the second communication device provided in any of the above embodiments, and has corresponding functions and effects.

[0182] This application embodiment also provides a storage medium containing computer-executable instructions, which, when executed by a computer processor, are used to perform a method applied to a first communication device. The method includes: sending a forward signal to a second communication device; receiving a reflected signal generated by a back-reflected carrier of the second communication device; wherein the carrier is transmitted according to predetermined transmission configuration information; the transmission configuration information is used to configure the transmission parameters of the carrier transmitted by a third communication device.

[0183] This application embodiment also provides a storage medium containing computer-executable instructions. When executed by a computer processor, the computer-executable instructions are used to execute a communication method applied to a second communication device. The method includes: transmitting a carrier according to pre-configured transmission parameters, so that the second communication device generates a reflected signal with respect to the reflected carrier, and sending the reflected signal to a first communication device; wherein the carrier is transmitted according to pre-determined transmission configuration information; the transmission configuration information is used to configure the transmission parameters of the carrier transmitted by a third communication device.

[0184] Those skilled in the art will understand that the term user equipment covers any suitable type of wireless user equipment, such as mobile phones, portable data processing devices, portable web browsers, or vehicle-mounted mobile stations.

[0185] Generally, the various embodiments of this application can be implemented in hardware or dedicated circuitry, software, logic, or any combination thereof. For example, some aspects can be implemented in hardware, while others can be implemented in firmware or software that can be executed by a controller, microprocessor, or other computing device, although this application is not limited thereto.

[0186] Embodiments of this application can be implemented by executing computer program instructions through the data processor of a mobile device, for example, in a processor entity, or through hardware, or through a combination of software and hardware. The computer program instructions can be assembly instructions, Instruction Set Architecture (ISA) instructions, machine instructions, machine-dependent instructions, microcode, firmware instructions, status setting data, or source code or object code written in any combination of one or more programming languages.

[0187] Any block diagram of logical flow in the accompanying drawings of this application may represent program steps, or may represent interconnected logic circuits, modules, and functions, or may represent a combination of program steps and logic circuits, modules, and functions. The computer program may be stored on memory. Memory may be of any type suitable to the local technical environment and may be implemented using any suitable data storage technology, such as, but not limited to, read-only memory (ROM), random access memory (RAM), optical storage devices and systems (Digital Video Disc (DVD) or Compact Disk (CD)), etc. Computer-readable media may include non-transitory storage media. The data processor may be of any type suitable to the local technical environment, such as, but not limited to, general-purpose computers, special-purpose computers, microprocessors, digital signal processors (DSPs), application-specific integrated circuits (ASICs), field-programmable gate arrays (FPGAs), and processors based on multi-core processor architectures.

[0188] This application also provides a computer program product, including a computer program that, when executed by a processor, can implement the communication method provided in any embodiment of this application.

[0189] In the implementation of the computer program product, computer program code for performing the operations of this application can be written in one or more programming languages ​​or a combination thereof. Programming languages ​​include object-oriented programming languages ​​such as Java, Smalltalk, and C++, as well as conventional procedural programming languages ​​such as C or similar languages. The program code can be executed entirely on the user's computer, partially on the user's computer, as a standalone software package, partially on the user's computer and partially on a remote computer, or entirely on a remote computer or server. In cases involving remote computers, the remote computer can be connected to the user's computer through any type of network—including a Local Area Network (LAN) or a Wide Area Network (WAN)—or can be connected to an external computer (e.g., via the Internet using an Internet service provider).

[0190] The above are merely optional embodiments of this application and are not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A method for communication, applied to a first communication device, comprising: sending a forward signal to a second communication device; receiving a reflection signal generated by back reflection of a carrier by the second communication device; wherein the carrier is transmitted according to predetermined transmission configuration information; and the transmission configuration information is used to configure transmission parameters of the carrier transmitted by a third communication device.

2. The method of claim 1, wherein, The transmission configuration information comprises one of the following: transmission control information and transmission indication information; wherein the transmission control information is used to set the transmission parameters of the carrier transmitted by the third communication device; and the transmission indication information is used to indicate the transmission parameters of the carrier transmitted by the third communication device.

3. The method of claim 1, wherein, The receiving time of the reflection signal is within an active time of the carrier transmitted by the third communication device.

4. The method of claim 1, wherein, The transmission parameters comprise at least one of the following: an active time or a deactivation time of carrier transmission; a transmission frequency of the carrier; a transmission power of the carrier; a transmission direction of the carrier; and a transmission format of the carrier.

5. The method of claim 2, wherein, The transmission control information and the transmission indication information each comprise at least one of the following: active time information of carrier transmission; transmission frequency information of the carrier; transmission power information of the carrier; transmission direction information of the carrier; and transmission format information of the carrier.

6. The method of claim 5, wherein, The active time information is used to indicate at least one of the following: an active time pattern; and a time pattern of environmental Internet of Things communication.

7. The method of claim 6, wherein, The active time pattern is used to indicate at least one of the following: a position of the active time; and a position of a deactivation time within a time period. The time pattern of environmental Internet of Things communication is used to indicate at least one of the following: a time position of the forward signal; and a time position of the reflection signal within a time period.

8. The method of claim 5, wherein, The active time information is further used to indicate at least two of the following: a start position, an end position, and a duration length of at least one of the active time and the deactivation time; and a start position, an end position, and a duration length of at least one of the forward signal and the reflection signal.

9. The method of claim 5, wherein, The transmission frequency information of the carrier comprises at least one of the following: a center position of the frequency; a bandwidth of the frequency; a start position of the frequency; and an end position of the frequency.

10. The method of claim 5, wherein, The transmission power information of the carrier comprises at least one of the following: a carrier transmission power level; a carrier transmission power range; a spectral density of the carrier transmission power; a power level of the carrier at the first communication device; a power factor of the carrier at the first communication device; and a path loss factor of the carrier at the first communication device.

11. The method of claim 5, wherein, The transmission direction information of the carrier comprises at least one of the following: a transmission beam direction of the carrier; a transmission beam direction identifier of the carrier; a reference signal corresponding to the carrier; a reference signal identifier corresponding to the carrier; and a transmission configuration indication state corresponding to the carrier.

12. The method of claim 5, wherein, The transmission format information of the carrier comprises: a single carrier unmodulated signal format; a single carrier constant amplitude modulation signal format; and a multi-carrier format.

13. The method of claim 1, wherein, The sending time of the forward signal does not overlap with the active time of the carrier transmitted by the third communication device.

14. The method of claim 1, wherein, The first communication device sends the forward signal to the second communication device, triggering at least one of the second communication devices to send the reflection signal; and the third communication device sends the carrier signal as the carrier of the reflection signal sent by the second communication device.

15. The method of claim 2, wherein, The bearer information of the transmission control information at least partially includes one of the following: a forward signal transmitted by the first communication device; a communication signal transmitted by the first communication device.

16. The method of claim 2, wherein, The acquisition manner of the transmission indication information includes one of the following: acquisition from a communication signal of another network entity; acquisition from a communication signal of the third communication device; acquisition from a carrier transmitted by the third communication device. 17.A communication method applied to a third communication device, comprising: transmitting a carrier according to a pre-configured transmission parameter, so that the second communication device backscatters the carrier to generate a reflection signal and transmits the reflection signal to the first communication device; wherein the carrier is transmitted according to pre-determined transmission configuration information; the transmission configuration information is used to configure the transmission parameter of the carrier transmitted by the third communication device.

18. The method of claim 17, wherein, The transmission configuration information includes one of the following: transmission control information and transmission indication information; wherein the transmission control information is used to set the transmission parameter of the carrier transmitted by the third communication device; the transmission indication information is used to indicate the transmission parameter of the carrier transmitted by the third communication device.

19. The method of claim 17, wherein, The transmission parameter at least includes one of the following: an activation time or a deactivation time of the carrier transmission; a transmission frequency of the carrier; a transmission power of the carrier; a transmission direction of the carrier; a transmission format of the carrier.

20. The method of claim 18, wherein, The transmission control information and the transmission indication information both include at least one of the following: activation time information of the carrier transmission; transmission frequency information of the carrier; transmission power information of the carrier; transmission direction information of the carrier; transmission format information of the carrier.

21. A communication device comprising: a memory, and one or more processors; The memory is configured to store one or more programs. When the one or more programs are executed by the one or more processors, the one or more processors implement the method in any one of claims 1-16 or 17-20. 22.A storage medium storing a computer program, which is executed by a processor to implement the method in any one of claims 1-16 or 17-20.

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