Internet of things communication method, electronic device, and computer program product

Abstract

Provided in the embodiments of the present disclosure are an Internet of Things communication method, an electronic device, and a computer program product. The method comprises: a first node sending first coordination information to a second node, wherein the first node is a node that sends a first CW signal and an FL signal to a tag node, and the second node is a node that receives an RL signal from the tag node.

Description

Iot communication method, electronic device and computer program product

[0001] Cross-reference to related applications

[0002] The present disclosure is based on Chinese Patent Application No. CN202410945762.2 entitled "Iot communication method, electronic device and computer program product" filed on July 15, 2024, and claims priority to the same, the disclosure of which is incorporated herein by reference in its entirety. TECHNICAL FIELD

[0003] Embodiments of the present disclosure relate to the field of communication, in particular to an Iot communication method, an electronic device and a computer program product. BACKGROUND

[0004] In an ambient Iot (A-IoT) communication two-station deployment scenario, if the forward link (FL) is sent by a reader (Reader 1), i.e., the reader sending the carrier wave (CW) and the reader sending the FL signal are the same reader or co-deployed, and the other reader (i.e., Reader 2) is only responsible for receiving the return / reverse link (RL) signal, this deployment is referred to as two-station class A deployment.

[0005] Two-station deployment can avoid supporting full duplex, but considering that two readers are needed to complete A-IoT communication, interaction and coordination information between readers need to be considered to avoid conflicts and interference between readers, and different two-station deployment schemes require different coordination information.

[0006] In summary, in the A-IoT communication two-station deployment scenario, information coordination for Iot communication is needed. SUMMARY

[0007] Embodiments of the present disclosure provide an Iot communication method, an electronic device and a computer program product to at least solve the problem that information coordination for Iot communication cannot be achieved in related technologies.

[0008] According to an embodiment of the present disclosure, an Iot communication method is provided, comprising: a first node sending first coordination information to a second node; wherein the first node is a node that sends a first carrier wave (CW) signal and a forward link (FL) signal to a tag node; and the second node is a node that receives a reflected return / reverse link (RL) signal from the tag node.

[0009] According to another embodiment of the present disclosure, a method for Internet of Things communication is provided, comprising: a second node receiving first coordination information from a first node; wherein the first node is a node that transmits a first carrier (CW) signal and a forward (FL) signal to a tag node; and the second node is a node that receives a reflected (RL) signal from the tag node.

[0010] According to still another embodiment of the present disclosure, a computer readable storage medium is also provided, which stores a computer program, wherein the computer program is configured to perform the steps in any of the method embodiments described above when executed.

[0011] According to still another embodiment of the present disclosure, an electronic device is also provided, which comprises a memory and a processor, the memory stores a computer program, and the processor is configured to execute the computer program to perform the steps in any of the method embodiments described above.

[0012] According to still another embodiment of the present disclosure, a computer program product is also provided, which comprises a computer program, and the computer program is executed by a processor to implement the steps in any of the method embodiments described above. BRIEF DESCRIPTION OF DRAWINGS

[0013] FIG. 1 is an example diagram of a dual station Class A deployment in the related art;

[0014] FIG. 2 is a hardware structure block diagram of a mobile terminal of a method for Internet of Things communication according to an embodiment of the present disclosure;

[0015] FIG. 3 is a flowchart of a method for Internet of Things communication according to an embodiment of the present disclosure;

[0016] FIG. 4 is another flowchart of a method for Internet of Things communication according to an embodiment of the present disclosure;

[0017] FIG. 5 is a flowchart of a method for Internet of Things communication according to an embodiment of the present disclosure applied to a first node;

[0018] FIG. 6 is a flowchart of a method for Internet of Things communication according to an embodiment of the present disclosure applied to a second node;

[0019] FIG. 7 is a diagram of a dual station Class A deployment according to an embodiment of the present disclosure;

[0020] FIG. 8 is another diagram of a dual station Class A deployment according to an embodiment of the present disclosure;

[0021] FIG. 9 is another diagram of a dual station Class A deployment according to an embodiment of the present disclosure;

[0022] FIG. 10 is another diagram of a dual station Class A deployment according to an embodiment of the present disclosure. DETAILED DESCRIPTION

[0023] The embodiments of the present disclosure will be described in detail below with reference to the drawings and in conjunction with embodiments.

[0024] It should be noted that the terms "first", "second", etc. in the description of the embodiments of the present disclosure and the claims and the above-described drawings are used to distinguish similar objects, and do not necessarily have to describe a specific order or sequence.

[0025] In some cases, as wireless technology continues to advance, a variety of wireless services have emerged in large quantities. A traditional wireless communication network or cell generally includes a central node and multiple terminal nodes. For example, in a cellular network, a base station communicates with multiple user equipment (UE), including 4G, 5G, and 6G communication; in a wireless local area network, an access point (AP) communicates with a station (STA); in a wireless personal area network (including Bluetooth), a master node communicates with a slave node; in a new short-range communication (such as star flash communication), a G node (management node) communicates with a T node (terminal node). 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 generally referred to as uplink (UL). Direct communication between terminal nodes is referred to as side link (SL), and communication between central nodes is referred to as peer link (PL). The above wireless communication methods and wired communication methods are collectively referred to as legacy link (LL). In the following description, a base station (BS) is used to represent a central node, and a UE is used to represent a terminal node in a 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.

[0026] In some cases, the devices of traditional communication, whether the central node or the terminal node, generally consume more energy and need power supply or battery for power supply, and the cost of manufacturing and maintenance is high. From this aspect, traditional communication can also be called active communication. On the other hand, some large-scale commercial scenarios use cases (warehouse, logistics, supply chain, smart home, environmental monitoring, intelligent farming and herding, finding objects, etc.) require small size, low cost, maintenance free, no battery but energy from the periodic environment, and environmental Internet of Things IoT devices with longer life cycle. Such ultra-low power consumption IoT devices that obtain energy from the surrounding environment are called A-IoT or Passive-IoT (Passive Internet of Things).

[0027] In some cases, from the perspective of A-IoT wireless communication, the devices participating in A-IoT communication can include: A-IoT master node (Reader): which can identify, read and write A-IoT secondary nodes through communication, also known as reader (Reader), reader, interrogator, etc. in the prior art. 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, the A-IoT master node will be referred to as Reader in the subsequent.

[0028] A-IoT secondary node (Tag): low-cost IoT device, generally without battery, can respond to the communication of the master node, and the general A-IoT device refers to the secondary node, tag, etc. In the subsequent, the A-IoT secondary node will be referred to as tag.

[0029] In some cases, from the perspective of A-IoT system, in addition to the above-mentioned master node and secondary node, it can also include: network side devices, including devices for configuring and managing communication, background database, server, base station and other high-level network entities. These network devices can be deployed separately or with the reader. Special power supply devices or special carrier (CW, carrier wave) transmitters, for example, the power supply of A-IoT tag can come from the surrounding environment, such as light energy, radio frequency energy, etc. These devices can be deployed with the Reader or separately. In a broad sense, such devices can be considered as a special Reader.

[0030] In some cases, for the convenience of description, the communication from the Reader to the tag can be referred to as forward communication FL, and the signal thereof can be referred to as forward signal or FL signal, and the communication from the tag to the Reader can be referred to as reverse communication RL, and the signal thereof can be referred to as reflection signal or RL signal. In order to reduce the complexity of the tag, the tag sends the RL information to the Reader by backscattering, and receives the FL information of the Reader by envelope detection. In the process of backscattering (also referred to as reverse scattering) communication, that is, the process of RL communication, the Reader sends a CW to the tag, receives the RL signal from the tag, and the tag generates the RL signal carrying information by reflecting the CW. It can be seen that, in the process of RL communication, the CW and the RL signal carrying information exist at the same time. According to different implementations of the RL communication, the deployment can be divided into two types: mono-static deployment and bi-static deployment.

[0031] In some cases, in the bi-static deployment, FIG. 1 is an example diagram of a bi-static class A deployment in the related art. As shown in FIG. 1, if the forward communication FL is sent by the Reader 1, that is, the Reader sending the carrier signal CW and the Reader sending the FL signal are the same Reader or co-station deployment, and the other Reader (that is, the Reader 2) is only responsible for receiving the reverse communication RL signal. This deployment is referred to as bi-static class A deployment.

[0032] The bi-static deployment can avoid supporting full duplex, but considering that two Readers are needed to complete the Ambient IoT communication, it is necessary to consider the interaction and coordination information between the Readers to avoid conflicts and interference between the Readers. Different bi-static deployment schemes need different coordination information. Therefore, the embodiments of the present disclosure provide a coordination scheme between the Readers in the bi-static class A deployment.

[0033] The method embodiments provided in the embodiments of the present disclosure can be executed in a mobile terminal, a computer terminal or similar computing device. Taking the case of running on a mobile terminal, FIG. 2 is a hardware structure block diagram of a mobile terminal of an Internet of Things communication method according to an embodiment of the present disclosure. As shown in FIG. 2, the mobile terminal can include one or more (only one is shown in FIG. 2) processors 202 (the processor 202 can include but is not limited to a processing device such as a microprocessor MCU or a programmable logic device FPGA) and a memory 204 for storing data, wherein the mobile terminal can further include a transmission device 206 for communication function and an input and output device 208. Those skilled in the art can understand that the structure shown in FIG. 2 is only schematic, which does not limit the structure of the mobile terminal. For example, the mobile terminal can include more or less components than those shown in FIG. 2, or have a different configuration from that shown in FIG. 2.

[0034] The memory 204 can be used to store computer programs, for example, software programs of application software and modules, such as a computer program corresponding to the Internet of Things communication method in the embodiments of the present disclosure. The processor 202 executes various function applications and data processing by running the computer programs stored in the memory 204, that is, implements the above method. The memory 204 can include a high-speed random access memory, and can further include a non-volatile memory, such as one or more magnetic storage devices, flash memories, or other non-volatile solid-state memories. In some embodiments, the memory 204 can further include a memory remotely arranged with respect to the processor 202, which can be connected to the mobile terminal through a network. Embodiments of the above network include but are not limited to the Internet, an intranet, a local area network, a mobile communication network and a combination thereof.

[0035] The transmission device 206 is used to receive or send data via a network. The network in specific embodiments can include a wireless network provided by a communication provider of the mobile terminal. In one embodiment, the transmission device 206 includes a network adapter (Network Interface Controller, NIC), which can be connected to other network devices through a base station so as to communicate with the Internet. In one embodiment, the transmission device 206 can be a radio frequency (Radio Frequency, RF) module, which is used to communicate with the Internet in a wireless manner.

[0036] The embodiments of the present disclosure provide an Internet of Things communication method, and FIG. 3 is a flowchart of the Internet of Things communication method according to an embodiment of the present disclosure. As shown in FIG. 3, the flow includes the following steps:

[0037] Step S302, the first node sends first coordination information to the second node; wherein the first node is a node sending the first CW signal and the FL signal to the tag node; and the second node is a node receiving the RL signal from the tag node.

[0038] In the embodiments of the present disclosure, the steps of the Internet of Things communication method at least include one of the following: the first node provides first coordination information to the second node; and the first node acquires second coordination information of the second node.

[0039] In one example embodiment, the first coordination information at least includes one of the following: a parameter of the first CW signal sent by the first node; and a parameter of the RL signal containing tag information sent by one or more tag nodes.

[0040] In the embodiments of the present disclosure, for back reflection communication, the CW and the RL signal exist at the same time, generally, the RL signal is within the CW time length, the Reader 2 receives the RL signal reflected by the tag, and at the same time, the Reader 2 also receives the CW sent by the first node, and the power of the CW is generally much greater than the power of the RL signal, so the R2 needs to eliminate the interference of the CW to better receive the RL signal, therefore, the R2 needs to know the time-frequency position information, the sending format and other information of the CW, so as to perform CW interference elimination.

[0041] In one example embodiment, the parameter of the first CW signal sent by the first node at least includes one of the following: time domain information of the first CW signal; frequency domain information of the first CW signal; sending format of the first CW signal; and sending power of the first CW signal.

[0042] In one example embodiment, the sending format of the first CW signal at least includes one of the following: a single-carrier unmodulated signal format; a single-carrier constant amplitude modulation signal format; and a multi-carrier signal format.

[0043] In the embodiments of the present disclosure, for back reflection communication, the RL signal sent by the tag is controlled by the R1, the time domain information of the RL signal, such as the starting time, the sending time length, the symbol length and other parameters, is controlled by the R1; the frequency domain information of the RL signal is also directly or indirectly controlled by the R1, for example, the frequency of the RL signal is offset from the frequency of the CW, the R1 directly controls the frequency of the CW, and the offset amount of the RL signal relative to the CW can also be controlled by the R1, in addition, other sending parameters of the RL signal, such as the encoding mode, can also be controlled by the R1. However, in the case of dual-station A type deployment, the R2 is the receiver of the RL signal, and the R2 needs to know the sending information of the RL signal in order to perform corresponding receiving operations when receiving the RL signal reflected by the tag, the sending information of the signal in the embodiments of the present disclosure can also be referred to as the parameter of the signal, and the two are equivalent, and will not be described in detail hereinafter.

[0044] In an example embodiment, the parameters of the RL signal include at least one of the following: time domain information of the RL signal; frequency domain information of the RL signal; transmission parameter of the RL signal; security parameter of the RL signal.

[0045] In an example embodiment, the time domain information of the RL signal includes at least one of the following: time domain position of the RL signal; symbol or chip length of the RL signal.

[0046] In an example embodiment, the frequency domain information of the RL signal includes at least one of the following: frequency domain position of the RL signal; frequency domain offset of the RL signal relative to the first CW signal.

[0047] In an example embodiment, the transmission parameter of the RL signal includes at least one of the following: rate of the RL signal; modulation / coding mode of the RL signal; preamble type of the RL signal.

[0048] In an embodiment of the present disclosure, the first node transmits the FL signal to trigger one or more tags to transmit the RL signal; and the first node transmits the CW signal as a carrier wave of the RL signal transmitted by the one or more tags.

[0049] In an embodiment of the present disclosure, the first coordination information is mainly used to assist the second node to receive the RL signal. The first node can directly transmit the first coordination information to the second node, or can transmit the first coordination information to the second node through other network nodes.

[0050] In an example embodiment, the first node transmits the first coordination information to the second node, including: the first node transmits the FL signal to the tag node, so that the second node obtains the first coordination information by decoding or detecting the FL signal, wherein the FL signal carries part or all of the first coordination information.

[0051] In an embodiment of the present disclosure, the FL signal carrying part or all of the first coordination information is transmitted; in an embodiment, the FL signal transmitted to the tag has a part of information that can be decoded or detected by the second node, and through decoding or detecting the information, the second node can obtain the first coordination information provided by the first node; in another embodiment, the first node can specially modulate the second information in the FL signal transmitted to the tag to carry the first coordination information, for example, using FSK / PSK constant amplitude modulation to modulate the first coordination information on the high level time of the FL signal.

[0052] In an example embodiment, the first node transmits the first coordination information to the second node, including: the first node transmits the first CW signal to the tag node, so that the second node obtains the first coordination information by detecting the first CW signal, wherein the first CW signal carries part or all of the first coordination information. In an example embodiment, the first node transmits the first coordination information to the second node, including: the first node transmits the first CW signal to the tag node, so that the second node obtains the first coordination information by detecting the first CW signal, wherein the first CW signal carries part or all of the first coordination information.

[0053] In the embodiments of the present disclosure, the CW is sent, and part or all of the first coordination information is carried in the CW signal; in one embodiment, the CW signal sent to the tag can be detected by the second node, and by detecting the CW, the second node can obtain the first coordination information provided by the first node; in another embodiment, the first node can specially modulate the second information in the CW signal sent to the tag to carry the first coordination information, for example, using FSK / PSK or other constant amplitude modulation to modulate the first coordination information on the CW and send it to the second node.

[0054] In one example embodiment, the first node sends the first coordination information to the second node, comprising: the first node sends a first communication signal to the second node, wherein the first communication signal carries part or all of the first coordination information.

[0055] In one example embodiment, the first node sends the first coordination information to the second node, comprising: the first node sends a first communication signal to the second node via at least one third node.

[0056] In the embodiments of the present disclosure, the conventional communication signal, i.e., the first communication signal, is sent, and part or all of the first coordination information is carried in the conventional communication signal; in one embodiment, R1 is a base station and R2 is a UE, R1 can send the first coordination information to R2 through a DL signal, for example, can use downlink control information (DCI), MAC control element (MAC CE), high-layer signaling, etc. to carry the first coordination information; in one embodiment, R1 is a UE and R2 is a base station, R1 can send the first coordination information to R2 through a UL signal, for example, can use uplink control information (UCI), MAC CE, high-layer signaling, etc. to carry the first coordination information. In one embodiment, R1 and R2 are both UEs, R1 can send the first coordination information to R2 through a SL signal, or R1 forwards the first coordination information to R2 through its associated base station. In one embodiment, R1 and R2 are both base stations, R1 can send the first coordination information to R2 through PL, wired transmission, etc., for example, the two can transmit these information through an inter-base-station interface, or through the transfer of these information by the high-layer entities (such as core network) associated with the two.

[0057] In one example embodiment, the first node further receives second coordination information from the second node.

[0058] In an example embodiment, the second coordination information comprises at least one of the following: reception of the RL signal by the second node; communication parameters of the first node and / or tag node for the IoT communication expected by the second node.

[0059] In an example embodiment, the reception of the RL signal by the second node comprises at least one of the following: the second node detects the RL signal of a tag node on one RL resource; the second node does not detect the RL signal of a tag node on one RL resource; the second node detects the RL signal of multiple tag nodes on one RL resource; the second node detects the collision signal of multiple tag nodes on one RL resource.

[0060] In an example embodiment, the reception of the RL signal by the second node comprises at least one of the following: the second node detects the number or proportion of the RL signal of a tag node on a set of RL resources; the second node does not detect the number or proportion of the RL signal of a tag node on a set of RL resources; the second node detects the number or proportion of the RL signal of multiple tag nodes on a set of RL resources; the second node detects the number or proportion of the collision signal of multiple tag nodes on a set of RL resources.

[0061] In an example embodiment, the communication parameters of the first node and / or tag node for the IoT communication expected by the second node comprises at least one of the following: parameters of the second CW signal; parameters of the RL signal; parameters of the FL signal; random access parameters of the tag node.

[0062] In an example embodiment, the random access parameters of the tag node comprises at least one of the following: total number of slots for random access; indication of adjustment of the total number of slots for random access; maximum value of the random access window; indication of adjustment of the maximum value of the random access window.

[0063] In an example embodiment, the method further comprises: sending, by the first node, resource allocation information to the second node.

[0064] In an example embodiment, the resource allocation information corresponds to resources for carrying at least one of the following: the second coordination information; tag information contained in the RL signal received by the second node.

[0065] In the embodiments of the present disclosure, the first node further sends resource allocation information to the second node, and the resource corresponding to the resource allocation information is used for the second node to send a traditional communication to the first node. The traditional communication carries at least one of the following information: the second coordination information, and the tag information contained in the reflected signal received by the second node. In an example, in addition to the first coordination information, the first node can also provide other information to the second node, for example, R1 is a base station, R2 is a UE, R1 schedules some resources to R2 for R2 to transfer the tag information contained in the received RL information to R1, and the second coordination information can also be sent to R1 separately or together.

[0066] In the embodiments of the present disclosure, the purpose of the first node obtaining the second coordination information is mainly to assist the first node to control the communication parameter. The communication parameter can include the parameter of the CW signal and the FL signal sent by the first node, can also include the parameter of the RL signal sent by the tag under the control of the first node, and can also include the random access parameter of the tag. In an embodiment, in order to support multiple tags to access the Reader or the Reader to identify multiple tags, the tag can use the random access mode to communicate with the Reader. For example, multiple tags can use the random access mode of time division multiple access (TDMA), such as the time slot ALOHA mode, and the tag randomly selects a time slot resource to send the RL signal in [0, N] time slots.

[0067] The embodiments of the present disclosure further provide an Internet of Things communication method. FIG. 4 is another flowchart of the Internet of Things communication method according to an embodiment of the present disclosure. As shown in FIG. 4, the flow includes the following steps:

[0068] In step S402, the second node receives the first coordination information from the first node, wherein the first node is a node that sends the first CW signal and the FL signal to the tag node; and the second node is a node that receives the RL signal from the tag node.

[0069] In the embodiments of the present disclosure, the steps of the Internet of Things communication method at least include one of the following: the second node obtains the first coordination information from the first node R1; and the second node provides the second coordination information to the first node.

[0070] In an example embodiment, the first coordination information at least includes one of the following: the parameter of the first CW signal sent by the first node; and the parameter of the RL signal containing the tag information sent by one or more tag nodes.

[0071] In an example embodiment, the second node receives the first coordination information from the first node, including: the second node decodes or detects a FL signal sent by the first node to the tag node to obtain the first coordination information, wherein the FL signal carries part or all of the first coordination information.

[0072] In an example embodiment, the second node receives the first coordination information from the first node, including: the second node detects a first CW signal sent by the first node to the tag node to obtain the first coordination information, wherein the first CW signal carries part or all of the first coordination information.

[0073] In an example embodiment, the second node receives the first coordination information from the first node, including: the second node receives a first communication signal from the first node, wherein the first communication signal carries part or all of the first coordination information.

[0074] In an example embodiment, the second node receives the first coordination information from the first node, including: the second node receives a first communication signal from the first node via at least one third node.

[0075] In an example embodiment, the second node further sends second coordination information to the first node.

[0076] In an example embodiment, the second coordination information at least includes one of: a reception condition of the second node to the RL signal; and a communication parameter sent by the second node to the first node.

[0077] In an example embodiment, the second node further receives resource allocation information from the first node.

[0078] In an example embodiment, the resource allocation information corresponds to a resource for carrying at least one of: the second coordination information; and tag information contained in the RL signal received by the second node.

[0079] In the embodiments of the present disclosure, the operations of the Internet of Things communication method applied to the second node R2 can refer to the content of the first node described above, which will not be repeated here. After receiving the first coordination information, the second node can perform interference cancellation of the CW, detection and reception of the RL signal, and other operations based on the first coordination information.

[0080] Through the above steps, an Internet of Things communication method is provided, in which the first node sends first coordination information to the second node, wherein the first node is a node that sends a first CW signal and a FL signal to a tag node; and the second node is a node that receives an RL signal from the tag node. The problem that information coordination of Internet of Things communication cannot be realized in the related art is solved, and the effect of efficiently coordinating information of Internet of Things communication is achieved.

[0081] Through the description of the above embodiments, those skilled in the art can clearly understand that the method according to the above embodiments can be realized by means of software necessary for a general hardware platform, and of course can also be realized by hardware, but in many cases the former is a better embodiment. Based on such understanding, the technical solutions of the present disclosure can be embodied in the form of a software product in essence or in the form of a part of the prior art. The computer software product is stored in a storage medium (such as a ROM / RAM, a magnetic disk, or an optical disk), and includes a plurality of instructions for causing an end device (which can be a mobile phone, a computer, a server, or a network device) to execute the method described in each embodiment of the present disclosure.

[0082] In the present embodiment, an Internet of Things communication device is also provided, which is used to implement the above embodiments and preferred embodiments, and will not be described again. As used below, the term "module" can be a combination of software and / or hardware that implements a predetermined function. Although the devices described in the following embodiments are preferably implemented in software, hardware or a combination of software and hardware is also possible and contemplated.

[0083] The Internet of Things communication device provided by the embodiments of the present disclosure can be arranged at the first node and can include a first sending module configured to send first coordination information to a second node, wherein the first node is a node that sends a first CW signal and a FL signal to a tag node, and the second node is a node that receives a RL signal from the tag node.

[0084] The Internet of Things communication device provided by the embodiments of the present disclosure can be arranged at the second node and can include a first receiving module configured to receive first coordination information from a first node, wherein the first node is a node that sends a first CW signal and a FL signal to a tag node, and the second node is a node that receives a RL signal from the tag node.

[0085] In the embodiments of the present disclosure, the above Internet of Things communication device can further include different modules, and the naming and function division of the modules can also be selected in different ways according to actual conditions, which are not specifically limited here.

[0086] It should be noted that the above modules can be realized by software or hardware, and for the latter, the following implementation manners can be used, but are not limited thereto: the above modules are located in the same processor; or the above modules are located in different processors in any combination.

[0087] The embodiments of the present disclosure also provide a computer readable storage medium, which stores a computer program, wherein the computer program is configured to execute the steps in any of the above method embodiments when running.

[0088] In an example embodiment, the computer readable storage medium described above can include, but is not limited to, a U disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a mobile hard disk, a magnetic disk or an optical disk, and various media that can store computer programs.

[0089] Embodiments of the present disclosure also provide an electronic device including a memory and a processor, the memory storing a computer program, and the processor being configured to execute the computer program to perform the steps in any of the method embodiments described above.

[0090] In an example embodiment, the electronic device described above can further include a transmission device connected to the processor and an input / output device connected to the processor.

[0091] Embodiments of the present disclosure also provide a computer program product including a computer program, which, when executed by a processor, implements the steps in any of the method embodiments described above.

[0092] In an example embodiment, the computer program product described above includes a non-volatile computer readable storage medium storing a computer program, which, when executed by a processor, implements the steps of the method described in various embodiments of the present disclosure.

[0093] The specific examples in the present embodiment can refer to the examples described in the above embodiments and example embodiments, which will not be described herein again.

[0094] Obviously, those skilled in the art should understand that the modules or steps of the present disclosure described above can be realized by general computing devices, which can be concentrated on a single computing device or distributed on a network composed of multiple computing devices, and they can be realized by program codes executable by computing devices, so that they can be stored in storage devices and executed by computing devices, and in some cases, the steps shown or described can be executed in different order, or they can be manufactured into individual integrated circuit modules, or multiple modules or steps can be manufactured into a single integrated circuit module. Thus, the present disclosure is not limited to any specific combination of hardware and software.

[0095] In order to make those skilled in the art better understand the technical solutions of the present disclosure, different embodiments will be described below.

[0096] Embodiment One

[0097] FIG. 5 is a flowchart of an IoT communication method according to an embodiment of the present disclosure applied to a first node. As shown in FIG. 5, the method comprises the following steps:

[0098] In step S502, the first coordination information is provided to the second node, or the second coordination information of the second node is acquired.

[0099] In the embodiment of the present disclosure, the first coordination information comprises at least one of the following: parameters of a first carrier CW sent by the first node, parameters of a reflection signal (RL signal) containing tag information sent by one or more tags.

[0100] In the embodiment of the present disclosure, the second coordination information comprises at least one of the following: reception of the reflection signal at the second node, and a communication parameter recommended by the second node to the first node.

[0101] In the embodiment of the present disclosure, the first node is a node that sends a CW and an FL signal to one or more tags; and the second node is a node that receives an RL signal sent by the one or more tags.

[0102] In the embodiment of the present disclosure, for back reflection communication, the CW and the RL signal exist at the same time. Generally, the RL signal is within the time length of the CW. The Reader 2 receives the RL signal reflected by the tag, and also receives the CW sent by the first node at the same time. The power of the CW is generally much greater than that of the RL signal. The R2 needs to eliminate the interference of the CW to better receive the RL signal. Therefore, the R2 needs to know the time-frequency position information, transmission format and other information of the CW, so as to eliminate the interference of the CW.

[0103] In the embodiment of the present disclosure, the parameters of the CW sent by the first node comprise at least one of the following: time domain information of the CW, frequency domain information of the CW, and transmission format of the CW. The transmission format comprises a single carrier (single carrier / tone) unmodulated signal format, a single carrier constant amplitude modulation signal format, and a multi-carrier format.

[0104] In the embodiment of the present disclosure, for back reflection communication, the RL signal sent by the tag is controlled by the R1. The time domain information of the RL signal, such as the starting time, the transmission time length, and the symbol length, is controlled by the R1. The frequency domain information of the RL signal is also directly or indirectly controlled by the R1. For example, the frequency of the RL signal is offset from the frequency of the CW. The R1 directly controls the frequency of the CW. The offset amount of the RL signal relative to the CW can also be controlled by the R1. In addition, other transmission parameters of the RL signal, such as the encoding mode, can also be controlled by the R1. However, in the case of dual-station Class A deployment, the R2 is the receiver of the RL signal. When the R2 receives the RL signal reflected by the tag, the R2 needs to know the transmission information of the RL signal to perform corresponding receiving operations.

[0105] In the embodiments of the present disclosure, the parameters of the RL signal include at least one of the following: time domain information of the RL signal, frequency domain information of the RL signal, transmission parameters of the RL signal, and security parameters of the RL signal. The transmission parameters can include the following parameters: RL signal rate, modulation / coding mode, preamble type, and the like; the time domain information can include the following parameters: time domain position (for example, starting position, time domain length) of the RL signal, symbol or chip length of the RL signal, and the like; and the frequency domain information can include the following parameters: frequency domain position of the RL signal, frequency domain offset of the RL signal relative to the CW signal, and the like.

[0106] In the embodiments of the present disclosure, the first node transmits the FL signal to trigger the one or more tags to transmit the RL signal; and the first node transmits the CW signal as a carrier wave for the RL signal transmitted by the one or more tags.

[0107] In the embodiments of the present disclosure, the purpose of the first coordination information is mainly to assist the second node in receiving the RL signal. The first node can directly transmit the first coordination information to the second node, or can transmit the first coordination information to the second node through other network nodes.

[0108] In the embodiments of the present disclosure, the first node provides the first coordination information to the second node, including at least one of the following: transmitting the FL signal; transmitting the first CW; and transmitting a conventional communication signal.

[0109] In the embodiments of the present disclosure, the FL signal is transmitted, and part or all of the first coordination information is carried in the FL signal; in one embodiment, the FL signal transmitted to the tag has a part of information that can be decoded or detected by the second node, and through decoding or detecting the information, the second node can obtain the first coordination information provided by the first node; in another embodiment, the first node can specially modulate the second information in the FL signal transmitted to the tag to carry the first coordination information, for example, using FSK / PSK or other constant amplitude modulation to modulate the first coordination information on the high level time of the FL signal.

[0110] In the embodiments of the present disclosure, the CW is transmitted, and part or all of the first coordination information is carried in the CW; in one embodiment, the CW signal transmitted to the tag can be detected by the second node, and through detecting the CW, the second node can obtain the first coordination information provided by the first node; in another embodiment, the first node can specially modulate the second information in the CW signal transmitted to the tag to carry the first coordination information, for example, using FSK / PSK or other constant amplitude modulation to modulate the first coordination information on the CW and transmit it to the second node.

[0111] In the embodiments of the present disclosure, the conventional communication signal carries part or all of the first coordination information; in one embodiment, R1 is a base station and R2 is a UE, R1 can send the first coordination information to R2 through a DL signal, for example, the first coordination information can be carried by using a downlink control information (DCI), a medium access control element (MAC CE), a high layer signaling, etc.; in one embodiment, R1 is a UE and R2 is a base station, R1 can send the first coordination information to R2 through a UL signal, for example, the first coordination information can be carried by using an uplink control information (UCI), a MAC CE, a high layer signaling, etc.; in one embodiment, R1 and R2 are both UEs, R1 can send the first coordination information to R2 through a SL signal, or R1 forwards the first coordination information to R2 through its associated base station; in one embodiment, R1 and R2 are both base stations, R1 can send the first coordination information to R2 through a PL, a wired transmission, etc., for example, the two base stations can transmit the information through an interface between the base stations, or the information can be exchanged through an associated high layer entity (such as a core network).

[0112] In the embodiments of the present disclosure, the first node further sends resource allocation information to the second node, and the resource corresponding to the resource allocation information is used by the second node to send a conventional communication to the first node. The conventional communication carries at least one of the following information: the second coordination information, and the tag information contained in the reflected signal received by the second node. In one embodiment, in addition to the first coordination information, the first node can also provide other information to the second node, for example, R1 is a base station and R2 is a UE, R1 schedules some resources for R2 to forward the tag information contained in the received RL information to R1, and at the same time, the second coordination information can also be sent to R1 separately or together.

[0113] In the embodiments of the present disclosure, the purpose of the first node obtaining the second coordination information is mainly to assist the first node in controlling the communication parameters, which can include the parameters of the CW, FL signal sent by the first node, can also include the parameters of the RL signal sent by the tag controlled by the first node, and can also include the random access parameters of the tag. In one embodiment, in order to support multiple tags to access the Reader or the Reader to identify multiple tags, the tag can use a random access manner to communicate with the Reader, for example, multiple tags can use a time division multiple access (TDMA) random access manner, such as a time slot ALOHA manner, the tag randomly selects a time slot resource in [0, N] time slots to send an RL signal, and for one time slot, the following situations can occur:

[0114] 1) Only one tag transmits;

[0115] 2) No tag transmits;

[0116] 3) Multiple tags send simultaneously, collision occurs between tags.

[0117] R1 controls the value of N to improve the access efficiency of the tag, for example, try to make more time slots as case 1), if case 2) occurs frequently, it is considered that the value of N is too large, causing resource waste, if case 3) occurs too much, it is considered that the value of N is too small. In this disclosure, due to the deployment of dual stations, R1 controls the random number access parameter N, and R2 receives the RL signal sent by the tag, which requires R1 to obtain the RL signal reception situation on one or more time slots from R2, so as to control the random access parameter according to the actual situation. R2 can send the reception situation on one time slot or the reception situation on multiple time slots in a period of time to R1, or can be transferred to the first node through other network nodes. In addition to informing R1 of the reception situation, R2 can also directly provide the recommended parameter to R1, for example, R2 informs R1 of the recommended random access parameter according to the reception situation, such as informing the value of the above-mentioned N, and for example, R2 informs R1 of the adjustment suggestion or indication of the random access parameter according to the reception situation, such as informing the increase or decrease of the value of the above-mentioned N. After receiving the second coordination information, R1 can adjust the communication parameter according to the second coordination information, for example, send a signaling to the tag, adjust the random access parameter, and it should be noted that the adjustment here also includes setting a new random access parameter.

[0118] In an embodiment of the present disclosure, the reception situation of the reflection signal at the second node includes detecting at least one of the following on one RL resource: the second node correctly detects the reflection signal of the tag, the second node does not detect the reflection signal of the tag, the second node detects the signals of multiple tags or detects the collision of the tags.

[0119] In an embodiment of the present disclosure, the reception situation of the reflection signal at the second node includes detecting at least one of the following on a group of RL resources: the number or proportion of the reflection signals of the tags correctly detected by the second node, the number or proportion of the resources on which the second node does not detect the reflection signals of the tags, the number or proportion of the resources on which the second node detects the signals of multiple tags or detects the collision of the tags.

[0120] In an embodiment of the present disclosure, the communication parameter recommended by the second node to the first node includes at least one of the following: the parameter of the second CW, the parameter of the RL signal, the parameter of the FL signal, and the random access parameter of the tag.

[0121] In an embodiment of the present disclosure, the random access parameter of the tag includes the total number of random access time slots or the adjustment indication of the total number of random access time slots; the total number of random access time slots can also be referred to as the maximum value of the time slot counter of the tag, that is, the above-mentioned N.

[0122] Figure 6 is a flowchart of an IoT communication method applied to a second node according to an embodiment of the present disclosure. As shown in Figure 6, an IoT communication method applied to a second node R2 includes the following steps:

[0123] In step S602, the first coordination information is obtained from the first node R1, or the second coordination information is provided to the first node.

[0124] In an embodiment of the present disclosure, the first coordination information includes at least one of the following: parameters of the first carrier CW sent by the first node, parameters of the reflection signal (RL signal) containing tag information sent by one or more tags.

[0125] In an embodiment of the present disclosure, the second coordination information includes at least one of the following: reception of the reflection signal at the second node, communication parameters recommended by the second node to the first node.

[0126] In an embodiment of the present disclosure, the first node is a node that sends CW and FL signals to one or more tags; and the second node is a node that receives RL signals sent by one or more tags.

[0127] In an embodiment of the present disclosure, the second node sends resource allocation information to the second node, and the resource corresponding to the resource allocation information is used for the second node to send traditional communication to the first node. The traditional communication carries at least one of the following information: the second coordination information, and tag information contained in the reflection signal received by the second node. In an embodiment, R2 is a base station, R1 is a UE, R2 schedules some resources for transmission, and transmits information to R1. The transmitted information includes tag information contained in the RL information received by R2.

[0128] In an embodiment of the present disclosure, the operation of the IoT communication method applied to the second node R2 can refer to the content of the first node described above, which will not be repeated here. After receiving the first coordination information, the second node can perform interference cancellation of CW, detection and reception of RL signals, and the like based on the first coordination information.

[0129] Embodiment Two

[0130] In an embodiment of the present disclosure, for the dual-station A-type deployment, according to the type of Reader, it can be further divided into various deployment situations. In different deployment situations, the way of interacting information between Readers (between R1 and R2) is different. The information interacted here includes the above coordination information, tag information, and the like. The embodiment content will be described later in combination with specific deployment situations.

[0131] Figure 7 is a schematic diagram of a two-station A-type deployment according to an embodiment of the present disclosure. As shown in Figure 7, in the A1 deployment, R1 is a base station and R2 is a UE. It is assumed that R1 and R2 can directly exchange information through conventional DL / UL communication, but it is not excluded that R1 and R2 exchange information through other conventional communication means such as wired communication or through other nodes.

[0132] Figure 8 is a schematic diagram of a two-station A-type deployment according to an embodiment of the present disclosure. As shown in Figure 8, in the A2 deployment, R1 is a UE and R2 is a base station. It is assumed that R1 and R2 can directly exchange information through conventional DL / UL communication. In addition, it is not excluded that R1 and R2 exchange information through other conventional communication means such as wired communication or through other nodes.

[0133] Figure 9 is a schematic diagram of a two-station A-type deployment according to an embodiment of the present disclosure. As shown in Figure 9, in the A3 deployment, R1 is a UE, denoted as UE1, and R2 is also a UE, denoted as UE2. It is assumed that R1 and R2 can directly exchange information through conventional SL communication, or can exchange information through a BS, for example, the BS can exchange information with R1 and R2 through DL / UL communication. In addition, it is not excluded that R1 and R2 exchange information through other conventional communication means such as wired communication or through other nodes.

[0134] Figure 10 is a schematic diagram of a two-station A-type deployment according to an embodiment of the present disclosure. As shown in Figure 10, in the A4 deployment, R1 is a base station, denoted as BS1, and R2 is also a base station, denoted as BS2. It is assumed that R1 and R2 can directly exchange information through conventional PL communication, or can exchange information through a BS, for example, the BS can exchange information with R1 and R2 through DL / UL communication, or R1 and R2 exchange information through other conventional communication means such as wired communication or through other nodes.

[0135] Embodiment Three

[0136] According to the A1 deployment of the two-station A-type deployment in the above embodiments.

[0137] In the A1 deployment in the embodiments of the present disclosure, R1 can send first coordination information to R2. In addition to sending the tag information contained in the received RL signal to R1 through UL, R2 can also send second coordination information to R1 through UL.

[0138] In one embodiment, R1 needs to inventory or identify nearby tags, and R1 sends an FL signal for triggering the tags in its vicinity that meet the conditions to respond, wherein the FL signal further includes parameters for controlling the tags to send the RL signal, including at least one of the following:

[0139] tag random access parameters. For example, the random access parameters used to determine the time domain parameter N described above, R1 can send the FL signal to indicate Q, and the value of N can be equal to 2Q-1; for example, the random access parameters used to determine the number of frequency domain channels M used by the tag, R1 can send the FL signal to indicate the value of M, or the position of the M channels, or the offset value of the M channels relative to the CW.

[0140] RL signal parameters. The specific content can be consistent with the RL signal parameters included in the first coordination information described above, or only contain part of the RL signal parameters included in the first coordination information described above, which will not be repeated here.

[0141] CW parameters. The specific content can be consistent with the CW parameters included in the first coordination information described above, or only contain part of the CW parameters included in the first coordination information described above, which will not be repeated here.

[0142] In one embodiment, the surrounding tag receives the FL signal sent by R1, and if a tag needs to respond to R1, it sends an RL signal. Here, the parameters of the RL signal sent by the tag should be consistent with the parameters of the RL signal indicated by R1. Generally, the tag does not need to know the deployment situation and type of the Reader, whether it is a single station deployment (R1 itself sends the CW and receives the RL signal) or a double station deployment, the behavior of the tag is the same.

[0143] In one embodiment, R2 receives the RL signal of one or more tags. In order to better receive the RL signal, R2 needs to obtain the first coordination information from R1. In this embodiment, R1 can inform R2 of the first coordination information through traditional communication (such as DL communication), or if R2 can detect the FL signal of R1, the FL signal can also include the CW, the RL signal parameter information as described above, R2 can also obtain part or all of the first coordination information from the FL signal, and for the same reason, if the CW can carry the first coordination information, R1 can also send the first coordination information to R2 through the CW. R2 can obtain the time and frequency positions of the CW and the RL signal, the transmission parameters and other information according to the first coordination information, and can eliminate the CW interference and better receive the RL signal.

[0144] In one embodiment, R2 sends information to R1 using traditional communication (for example, UL communication), and the information sent includes the tag information received from the RL signal, and can also include the second coordination information described above. It should be noted that in all embodiments of the present disclosure, the interaction or transmission of information can use one transmission to carry two kinds of information or multiple kinds of information, or use separate multiple transmissions to carry single or multiple kinds of information, which is not limited here.

[0145] In one embodiment, R1 receives the second coordination information provided by R2. R1 can adjust the parameters of at least one of the CW, the FL signal, and the RL signal according to the second coordination information. For example, R1 can adjust the random access parameters according to the second coordination information to improve the inventory efficiency of R1.

[0146] In one embodiment, in addition to the above inventory process, Reader can also communicate with a single tag, such as reading tag information or writing information to the tag. The basic process of the communication is similar to the above inventory process except that there is no random access process, which will not be described here and in subsequent embodiments.

[0147] In one embodiment, R1 can send resource allocation information to R2, which corresponds to the resources used by R2 to send tag information and / or second coordination information to R1. In one embodiment, R1 carries the above resource allocation information when sending the first coordination information to R2. In another embodiment, R1 can send dedicated signaling to R2 to allocate resources to trigger R2 to send tag information and / or second coordination information on the allocated resources.

[0148] In one embodiment, under A1 deployment, R1 can obtain tag information and / or second coordination information from R2 more quickly, reducing unnecessary delay. For example, according to the traditional way, if R2 needs to send information to R1, it needs to first inform R1 of its sending requirement and request corresponding resources, such as UE informing the base station of its sending requirement to request resources through schedule request (SR), buffer status report (BSR), etc. In the embodiment of the present disclosure, the information to be sent by R2 is actually tag information and / or second coordination information, and the sending requirement of these information is actually triggered or controlled by R1, so R1 can directly allocate appropriate resources to avoid the time delay and resource waste caused by the resource request process of R2.

[0149] Embodiment Four

[0150] According to the above-mentioned A2 deployment of the dual-station A-class deployment.

[0151] In the embodiment of the present disclosure, in A2 deployment, R1 can send first coordination information to R2. R2 can send tag information contained in the received RL signal to R1 through DL, and can also send second coordination information to R1 through DL.

[0152] The basic process is similar to A1 deployment, and the concepts in this embodiment are consistent with the above-mentioned embodiments unless otherwise specified:

[0153] In one embodiment, R1 needs to inventory or identify tags in the vicinity, R1 sends a FL signal to trigger the tags in the vicinity to respond, wherein the FL signal further comprises parameters for controlling the tags to send RL signals, including at least one of the following: parameters for tag random access; parameters for RL signals; parameters for CW. In one embodiment, under A2 deployment, R1 is a UE and R2 is a base station, R2 can control the communication parameters of R1 through conventional communication, naturally, R2 can indirectly control the parameters for the tags to send RL signals through R1, for example, R2 sends scheduling signaling to inform R1 of at least one of the following parameters: parameters for FL signals, parameters for CW, parameters for RL signals, parameters for tag random access. In this case, R1 should send the parameters carried in the above-mentioned FL signal consistent with the parameters informed by R2. In another embodiment, although under A2 deployment, R1 can control some parameters by itself, rather than all of them being controlled by R2, for example, under A2 deployment, R1 can at least control the parameters for tag random access.

[0154] In one embodiment, the tags in the vicinity receive the FL signal sent by R1, and if a tag needs to respond to R1, the tag sends an RL signal. Here, the parameters of the RL signal sent by the tag should be consistent with the parameters of the RL signal indicated by R1.

[0155] In one embodiment, R2 receives the RL signals of one or more tags. In order to better receive the RL signals, R2 needs to obtain first coordination information from R1, in this embodiment, R1 can inform R2 of the first coordination information through conventional communication (such as UL communication), or if R2 can detect the FL signal and / or CW signal of R1 to obtain part or all of the first coordination information. In one embodiment, under A2 deployment, as described above, R2 can indirectly control the parameters for the tags to send RL signals through R1, in this case, R2 already knows part of the parameters, and R1 does not need to send the first coordination information including these parameters to R2.

[0156] In one embodiment, R2 sends information to R1 using conventional communication (such as DL communication), the sent information includes the tag information received from the RL signal, and can also include the above-mentioned second coordination information. Under A2 deployment, R2 as a base station can control the communication parameters used by R1 through the second coordination information.

[0157] In one embodiment, R1 receives the second coordination information provided by R2. R1 can adjust the parameters of at least one of the CW, FL signal, and RL signal according to the second coordination information. For example, R1 can adjust the random access parameters N or Q according to the second coordination information to improve the inventory efficiency of R1.

[0158] In one embodiment, R2 can send resource allocation information to R1, which corresponds to resources used for at least one of the following: for R1 to send FL signals, for R1 to send CW, for R1 to send first coordination information. If R1 needs resources, it needs to first inform R2 of its transmission needs and then request corresponding resources, for example, the UE informs the base station of its transmission needs through SR, BSR, etc. to request resource allocation. In addition, due to the particularity of back reflection communication, the resources used by R1 to send CW are equivalent to the resources used by the tag to send RL signals.

[0159] Embodiment five

[0160] According to the A3 deployment mode of the dual-station A-type deployment in the above embodiments.

[0161] In the A3 deployment in the embodiments of the present disclosure, R1 and R2 can interact information through SL communication, and R1 and R2 can also interact information through the relay of a base station or a network, for example, R1 can send first coordination information to the BS through UL and then the BS relays it to R2 through DL, and R2 can send tag information and second coordination information to the BS through UL, and the BS relays it to R1 through DL.

[0162] At least the Ambient IoT communication process and other deployments of the above embodiments are similar, and the concepts in the embodiments are consistent with the above embodiments unless otherwise specified:

[0163] In one embodiment, R1 needs to inventory, identify or read and write nearby tags, and R1 sends FL signals to trigger the tags that meet the conditions around it to respond, wherein the FL signals also include parameters for controlling the tag to send RL signals, including at least one of the following: parameters for tag random access; parameters of RL signals; parameters of CW.

[0164] In one embodiment, under the A3 deployment, R1 is a UE and R2 is also a UE, and the resources used by the two may all come from the scheduling of the base station. In addition to controlling resource scheduling, the base station can also indirectly control the parameters of the tag to send RL signals through R1, such as the base station sending scheduling signaling to notify R1 of at least one of the following parameters: parameters of FL signals, parameters of CW, parameters of RL signals, and parameters for tag random access. In this case, the base station knows the content of part of the first coordination information, and R1 does not need to send these first coordination information to the base station, and the base station can directly provide this part of the first coordination information to R1. In another embodiment, although it is A3 deployment, R1 can control some parameters by itself instead of being scheduled and instructed by the base station, for example, under the A3 deployment, R1 can control the parameters for tag random access, and R1 can possibly autonomously select resources to send FL signals and CW. In this case, R1 still needs to provide part of the first coordination information to R2.

[0165] In one embodiment, the surrounding tags receive the FL signal sent by R1, and if a tag needs to respond to R1, it sends an RL signal. The parameters of the RL signal sent by the tag should be consistent with the parameters of the RL signal indicated by R1.

[0166] In one embodiment, R2 receives the RL signals of one or more tags. In order to better receive the RL signals, R2 needs to obtain the first coordination information from R1 and / or the base station. In this embodiment, R1 can inform R2 of the first coordination information through traditional communication (such as SL direct communication, through the base station or network relay), or if R2 can detect the FL signal and / or CW signal of R1 to obtain part or all of the first coordination information. In one embodiment, A3 is deployed, as described above, part of the first coordination information can come directly from the base station or network, for example, the base station determines part of the parameters of the RL signal, the FL signal, and the CW. In this case, R2 can directly obtain part or all of the first coordination information from the base station. In this case, this part of the first coordination information can also be referred to as the third coordination information, and all embodiments of the present disclosure are the same, that is, the coordination information originating from R1 is the first coordination information, the coordination information originating from R2 is the second coordination information, and the coordination information provided to R2 originating from the base station or network is referred to as the third coordination information (the third coordination information can include the same content as the first coordination information), and the coordination information provided to R1 originating from the base station or network is referred to as the fourth coordination information (the fourth coordination information can include the same content as the second coordination information), and other embodiments are not described in detail.

[0167] In one embodiment, R2 sends information to R1 using a traditional communication method (for example, SL communication, or through the base station or network relay), and the sent information includes the tag information received from the RL signal, and can also include the above-mentioned second coordination information. Under the A3 deployment, if the base station receives the second coordination information, it can generate the fourth coordination information according to the second coordination information, for example, the base station determines the random access parameters to be used according to the receiving situation of R2, and notifies R1 of these random access parameters as the fourth coordination information. In one embodiment, the second coordination information can also include the FL signal and / or CW situation detected by R2, for example, the power level, interference level, etc. of these signals.

[0168] In one embodiment, R1 obtains the second coordination information provided by R2, and / or obtains the fourth coordination information provided by the base station / network. R1 can adjust the parameters of at least one of the CW, FL signal, and RL signal according to these coordination information. For example, adjust the random access parameters N or Q to improve the inventory efficiency of R1; adjust the power, frequency, etc. of the CW and FL signal.

[0169] In one embodiment, the base station can send resource allocation information to R1, R2, the resource corresponding to the resource allocation information is used for at least one of the following: for R1 to send FL signal, for R1 to send CW, for R1 to send first coordination information, for R2 to send second coordination information, for R2 to send tag information. In one embodiment, R1, R2 can respectively notify the base station of their own transmission requirements through SR, BSR and the like to request resource allocation, or only R1 or R2 sends a resource request to the base station to notify the base station of the required resources of the entire Ambient IoT communication, that is, the resources of R1 and R2. In addition, due to the particularity of back reflection communication, the resource of R1 sending CW is equivalent to the resource of tag sending RL signal.

[0170] Embodiment six

[0171] According to the above-mentioned A4 deployment mode of the dual-station A-type deployment in the embodiments.

[0172] In the embodiments of the present disclosure, in the A4 deployment, R1 and R2 can interact information through PL communication, and R1 and R2 can also interact information through the mediation of a wired or other network entity. At least the Ambient IoT communication process and other deployments of the above-mentioned embodiments are similar, and like no special description, the concepts in the embodiments are consistent with the above-mentioned embodiments:

[0173] In one embodiment, R1 needs to inventory, identify or read and write nearby tags, and R1 sends FL signal for triggering the tags meeting the conditions around it to respond, wherein the FL signal further includes parameters for controlling the tag to send RL signal, including at least one of the following: parameters of tag random access; parameters of RL signal; parameters of CW.

[0174] In one embodiment, under the A deployment, R1 is a BS, and R2 is also a BS, and the resources used by the two may all come from themselves, without the need for resource scheduling of other devices. In one embodiment, under the A4 deployment, R1 can control the communication parameters by itself, and R1 needs to provide first coordination information to R2. It should be noted that in this case, the first coordination information is actually equivalent to the third coordination information.

[0175] In one embodiment, the tags around receive the FL signal sent by R1, and if a tag needs to respond to R1, the tag sends RL signal. Here, the parameters of the RL signal sent by the tag should be consistent with the parameters of the RL signal indicated by R1.

[0176] In one embodiment, R2 receives the RL signals of one or more tags. In order to receive the RL signals better, R2 needs to obtain the first coordination information from R1. In this embodiment, R1 can inform R2 of the first coordination information through conventional communication (e.g., direct communication or through network relay), or R2 can detect the FL signals and / or CW signals of R1 to obtain part or all of the first coordination information.

[0177] In one embodiment, R2 sends information to R1 through conventional communication (e.g., direct communication or through network relay), and the information sent includes the tag information received from the RL signals and can also include the second coordination information. In one embodiment, the second coordination information can also include the FL signals and / or CW signals detected by R2, such as the power level, interference level, etc. of these signals. It should be noted that in this case, the second coordination information is actually equivalent to the fourth coordination information.

[0178] In one embodiment, R1 obtains the second coordination information provided by R2. R1 can adjust the parameters of at least one of the CW, FL signals and RL signals according to these coordination information. For example, adjust the random access parameters N or Q to improve the inventory efficiency of R1; adjust the power, frequency, etc. of the CW and FL signals. In addition, due to the particularity of back reflection communication, the resource of R1 sending CW is equivalent to the resource of the tag sending RL signals.

[0179] Embodiment Seven

[0180] In the embodiments of the present disclosure, the dual-site Class A deployment can work on TDD spectrum, unlicensed spectrum or FDD spectrum.

[0181] In the embodiments of the present disclosure, especially for FDD spectrum, the working frequencies and behaviors of R1 and R2 are quite different for different Class A deployments:

[0182] In the embodiments of the present disclosure, for A1 deployment, the FL signals and CW sent by R1 are all on the DL spectrum, the RL signals sent by the tag are also on the DL spectrum, and R2 as a UE only needs to receive on the DL spectrum. R2 needs to work on the UL spectrum when sending tag information and / or second coordination information to R1; R1 needs to use the DL spectrum when sending the first coordination information and / or the above-mentioned resource allocation information, etc. to R2. In this deployment, when conventional communication and A-IoT communication coexist, R1 and R2 do not need to support full-duplex communication on a single spectrum, and meet the current communication rules and requirements.

[0183] In the embodiment of the present disclosure, for the A2 deployment, the FL signals sent by R1 are all in the UL spectrum, the RL signals sent by the tag are also in the UL spectrum, and R2 as a BS only needs to receive in the UL spectrum. R2 sends at least one of the tag information, the second coordination information, and the resource allocation information to R1, which needs to work in the UL spectrum; and R1 sends the first coordination information to R2, which needs to use the DL spectrum for transmission. In this deployment, when the traditional communication and the A-IoT communication coexist, R1 and R2 do not need to support full-duplex communication in a single spectrum, and meet the current communication rules and requirements.

[0184] In the embodiment of the present disclosure, for the A3 deployment, the FL signals sent by R1 are all in the UL spectrum, the RL signals sent by the tag are also in the UL spectrum, and R2 as a UE needs to receive in the UL spectrum. R2 sends at least one of the tag information, the second coordination information, to R1, which needs to work in the UL spectrum; and R1 sends the first coordination information to R2, which also needs to use the UL spectrum for transmission. In this deployment, when the traditional communication and the A-IoT communication coexist, if single-spectrum full-duplex communication is not required to be supported, then the time of some traditional communication and A-IoT communication needs to be separated.

[0185] In the embodiment of the present disclosure, for the A4 deployment, the FL signals sent by R1 are in the DL spectrum, and if the CW is also in the DL spectrum, then the RL signals sent by the tag are also in the DL spectrum, and R2 as a base station needs to receive in the DL spectrum. When the traditional communication and the A-IoT communication coexist, this may require R2 to support full-duplex communication in the DL spectrum, that is, to support receiving the RL signals while transmitting the traditional communication in the DL spectrum. If the CW is also in the UL spectrum, then the RL signals sent by the tag are also in the UL spectrum, and R2 as a base station only needs to receive in the UL spectrum. When the traditional communication and the A-IoT communication coexist, this may require R1 to support receiving the traditional communication while transmitting the CW in the UL spectrum.

[0186] In the embodiment of the present disclosure, the first coordination information or the third coordination information can also include the security parameter information of the RL signals. Generally, in order to prevent the information in the tag from being eavesdropped by an unauthorized receiver or tampered with, the RL signals can use some security strategies, such as using a certain security encryption algorithm, a certain security protocol, a certain integrity protection algorithm, etc. These security strategies or security parameters are generally controlled by R1 or negotiated by R1 and the tag. R2 as a device receiving the RL signals in the two-station deployment can need to know the security parameters of the RL signals, so that R2 can correctly receive.

[0187] In the embodiments of the present disclosure, the security parameter of the RL signal can include at least one of the following: whether the RL signal uses a security parameter, a type of the security parameter or security policy, a type of an encryption algorithm used, a security protocol used, and an integrity protection algorithm used.

[0188] In the embodiments of the present disclosure, an Internet of Things communication method is provided. Interaction using first coordination information enables a reflected signal receiving Reader to know a CW and a receiving parameter of an RL signal, which is beneficial to the receiving of the RL signal. Alternatively, interaction using second coordination information enables a Reader sending a CW and an FL signal to obtain a receiving condition of an RL signal, which is beneficial to the Reader controlling its own and tag sending parameters and random access parameters.

[0189] The Internet of Things communication method provided by the embodiments of the present disclosure can solve the information coordination problem of the environment Internet of Things in the environment Internet of Things two-station deployment scenario. In particular, coordination between Readers of A-IoT.

[0190] The above merely describes the preferred embodiments of the present disclosure and is not intended to limit the present disclosure. The present disclosure can have various modifications and changes for those skilled in the art. Any modification, equivalent replacement, improvement, etc. within the principles of the present disclosure shall be included in the protection scope of the present disclosure.

Claims

1. A method for Internet of Things (IoT) communication, comprising: sending, by a first node, first coordination information to a second node, wherein the first node is a node that transmits a first carrier (CW) signal and a forward (FL) signal to a tag node, and the second node is a node that receives a reflected (RL) signal from the tag node.

2. The method of claim 1, wherein, the first coordination information comprises at least one of: parameters of the first CW signal transmitted by the first node; and parameters of the RL signal transmitted by one or more tag nodes and containing tag information.

3. The method of claim 2, wherein, the parameters of the first CW signal transmitted by the first node comprise at least one of: time domain information of the first CW signal; frequency domain information of the first CW signal; transmission format of the first CW signal; and transmission power of the first CW signal.

4. The method of claim 3, wherein, the transmission format of the first CW signal comprises at least one of: a single carrier unmodulated signal format; a single carrier constant amplitude modulation signal format; and a multi-carrier signal format.

5. The method of claim 2, wherein, the parameters of the RL signal comprise at least one of: time domain information of the RL signal; frequency domain information of the RL signal; transmission parameters of the RL signal; and security parameters of the RL signal.

6. The method of claim 5, wherein, the time domain information of the RL signal comprises at least one of: time domain position of the RL signal; and symbol or chip length of the RL signal.

7. The method of claim 5, wherein, the frequency domain information of the RL signal comprises at least one of: frequency domain position of the RL signal; and frequency domain offset of the RL signal relative to the first CW signal.

8. The method of claim 5, wherein, the transmission parameters of the RL signal comprise at least one of: rate of the RL signal; modulation and coding scheme of the RL signal; and preamble type of the RL signal.

9. The method of claim 1, wherein, sending, by the first node, first coordination information to a second node, comprising: sending, by the first node, the FL signal to the tag node, so that the second node obtains the first coordination information by decoding or detecting the FL signal, wherein the FL signal carries part or all of the first coordination information.

10. The method of claim 1, wherein, sending, by the first node, first coordination information to a second node, comprising: sending, by the first node, the first CW signal to the tag node, so that the second node obtains the first coordination information by detecting the first CW signal, wherein the first CW signal carries part or all of the first coordination information.

11. The method of claim 1, wherein, sending, by the first node, first coordination information to a second node, comprising: sending, by the first node, a first communication signal to the second node, wherein the first communication signal carries part or all of the first coordination information.

12. The method of claim 11, wherein, sending, by the first node, first coordination information to a second node, comprising: sending, by the first node, the first communication signal to the second node via at least one third node.

13. The method of claim 1, wherein, further comprising: receiving, by the first node, second coordination information from the second node.

14. The method of claim 13, wherein, the second coordination information comprises at least one of: reception of the RL signal by the second node; and communication parameters of the first node and / or the tag node expected by the second node for IoT communication.

15. The method of claim 14, wherein, The receiving condition of the RL signal by the second node comprises one of: The second node detects the RL signal of one tag node on one RL resource; The second node does not detect the RL signal of the tag node on one RL resource; The second node detects the RL signal of multiple tag nodes on one RL resource; The second node detects the collision signal of multiple tag nodes on one RL resource.

16. The method of claim 14, wherein, The receiving condition of the RL signal by the second node comprises one of: The second node detects the number or proportion of the RL signal of the tag node on a set of RL resources; The second node does not detect the number or proportion of the RL signal of the tag node on a set of RL resources; The second node detects the number or proportion of the RL signal of multiple tag nodes on a set of RL resources; The second node detects the number or proportion of the collision signal of multiple tag nodes on a set of RL resources.

17. The method of claim 13, wherein, The communication parameter of the first node and / or tag node of the Internet of Things communication expected by the second node comprises at least one of: The parameter of the second CW signal; the parameter of the RL signal; the parameter of the FL signal; the random access parameter of the tag node.

18. The method of claim 17, wherein, The random access parameter of the tag node comprises at least one of: The total number of random access slots; the adjustment indication of the total number of random access slots; the maximum value of the random access window; the adjustment indication of the maximum value of the random access window.

19. The method of claim 1, wherein, Further comprising: The first node sends resource allocation information to the second node.

20. The method of claim 19, wherein, The resource corresponding to the resource allocation information is used to carry at least one of: The second coordination information; the tag information contained in the RL signal received by the second node.

21. An Internet of Things communication method, comprising: The second node receives first coordination information from the first node; Wherein, the first node is a node that sends a first carrier CW signal and a forward FL signal to a tag node; the second node is a node that receives a reflected RL signal from the tag node.

22. The method of claim 21, wherein, The first coordination information comprises at least one of: The parameter of the first CW signal sent by the first node; the parameter of the RL signal containing tag information sent by one or more tag nodes.

23. The method of claim 21, wherein, The second node receives first coordination information from the first node, comprising: The second node decodes or detects the FL signal sent by the first node to the tag node to obtain the first coordination information, wherein the FL signal carries part or all of the first coordination information.

24. The method of claim 21, wherein, The second node receives first coordination information from the first node, comprising: The second node detects the first CW signal sent by the first node to the tag node to obtain the first coordination information, wherein the first CW signal carries part or all of the first coordination information.

25. The method of claim 21, wherein, The second node receives first coordination information from the first node, comprising: The second node receives a first communication signal from the first node, wherein the first communication signal carries part or all of the first coordination information.

26. The method of claim 25, wherein, The second node receives first coordination information from the first node, including: The second node receives the first communication signal from the first node via at least one third node.

27. The method of claim 21, wherein, Further comprising: The second node sends second coordination information to the first node.

28. The method of claim 27, wherein, The second coordination information includes at least one of: A reception condition of the RL signal by the second node; and a communication parameter sent by the second node to the first node.

29. The method of claim 21, wherein, Further comprising: The second node receives resource allocation information from the first node.

30. The method of claim 29, wherein, The resource allocation information corresponds to resources used to carry at least one of: Second coordination information; and tag information included in the RL signal received by the second node.

31. A computer readable storage medium having stored therein a computer program, wherein, The computer program, when executed by a processor, implements the method recited in any one of claims 1 to 30.

32. An electronic device comprising a memory, a processor, and a computer program stored on the memory and executable on the processor, wherein the processor implements the method recited in any one of claims 1 to 30 when executing the computer program.

33. A computer program product comprising a computer program, wherein the computer program, when executed by a processor, implements the method recited in any one of claims 1 to 30.

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