Communication method and communication device

Abstract

The invention discloses a communication method and a communication device.The communication method can comprise the steps that R2D information is sent, the R2D information carries at least one piece of information including first control information, second control information or data information, and the content of the first control information is different from the content of the second control information. By adopting the application, the information type sent to the A-IoT device by the reader is provided, so that the flexibility of communication between the reader and the A-IoT device is improved.

Description

Technical Field

[0001] This application relates to the field of communication technology, and in particular to a communication method and communication device. Background Technology

[0002] In communication systems, passive Internet of Things (A-IoT) devices have been introduced to improve communication sustainability and performance. The number of A-IoT devices that can be connected to the network is enormous, and A-IoT devices are simple in structure, low in hardware cost, low in maintenance cost, and low in power consumption, allowing them to operate for extended periods without battery replacement. Readers can communicate with A-IoT devices via radio frequency signals or wireless signals. Currently, reader-to-device (R2D) transmission is defined as reader-to-device (R2D) transmission, but the specific content of R2D transmission is not yet defined. Summary of the Invention

[0003] This application provides a communication method and a communication device, which provides the types of information carried in the R2D information sent by the reader to the A-IoT device, so as to improve the flexibility of communication between the reader and the A-IoT device.

[0004] In a first aspect, this application provides a communication method, the method comprising:

[0005] Send R2D information, which carries at least one of the following: first control information, second control information, or data information, wherein the first control information and the second control information contain different contents.

[0006] Implementing the first aspect of the method, the Reader to Device (R2D) information sent by the reader to the A-IoT device can include various types of information, and the control information is divided into more granular first control information and second control information. The reader can carry different types of information in the R2D information according to different needs, meet the needs of various scenarios, and improve the flexibility of communication between the reader and the A-IoT device.

[0007] In one possible implementation, the first control information includes at least one of the following: device identifier, group identifier, tag identifier, device type, and reader identifier.

[0008] By implementing this method, the information included in the first control information can help the A-IoT device determine whether to continue parsing R2D information. For example, if the device identifier included in the first control information matches the device identifier of the A-IoT device, it means that the information was sent to that A-IoT device, and the A-IoT device can continue parsing the R2D information. Or, for example, if the device type included in the first control information matches the device type of the A-IoT device, it means that the information was sent to that type of A-IoT device, and the A-IoT device can continue parsing the R2D information. This can avoid unnecessary parsing of R2D information by the A-IoT device, save power consumption, and improve reception efficiency.

[0009] In one possible implementation, the R2D information includes at least a preamble and a reader-to-device physical shared channel (PRDCH).

[0010] The information carried in the R2D information is contained in the preamble and / or the PRDCH.

[0011] Implementing this method provides a structure for R2D information, making it easier for the receiving end (i.e., A-IoT device) to parse the R2D information.

[0012] In one possible implementation, the first control information is carried in the preamble of the R2D information, or the first control information is carried in the PRDCH of the R2D information.

[0013] In this method, the first control information is carried in the preamble of the R2D information, which makes it easier for the receiving end (i.e., the A-IoT device) to parse and obtain the first control information first. The first control information is carried in the PRDCH of the R2D information. Since the PRDCH carries more information than the preamble, carrying the first control information in the PRDCH allows for the transmission of first control information containing more information.

[0014] In one possible implementation, the second control information is carried in the PRDCH of the R2D information.

[0015] By implementing this method, the second control information is carried in the PRDCH, which enables the transmission of second control information containing more information.

[0016] In one possible implementation, the data information is carried in the PRDCH of the R2D information.

[0017] By implementing this method and carrying data information in the PRDCH, more data information can be transmitted.

[0018] In one possible implementation, the R2D information also carries indication information, which indicates the format of the PRDCH of the R2D information, and the format of the PRDCH indicates the information carried by the PRDCH.

[0019] Implementing this method allows for the specification of the PRDCH format via instruction information, thereby increasing the flexibility of PRDCH transmission and reception.

[0020] In one possible implementation, the format of the PRDCH is one of a first format, a second format, or a third format;

[0021] The first format indicates that the PRDCH carries only control information;

[0022] The second format indicates that the PRDCH carries control information and data information;

[0023] The third format indicates that the PRDCH carries only data information;

[0024] The control information includes the first control information and / or the second control information.

[0025] Implementing this method makes it easier for the receiving end (i.e., A-IoT device) to determine the type of information carried by the PRDCH, thereby improving reception efficiency.

[0026] In one possible implementation, the indication information is carried in the preamble of the R2D information.

[0027] By implementing this method, the indication information is carried in the preamble, which makes it easier for the receiving end (i.e., A-IoT device) to quickly determine the type of information carried by the PRDCH and improve the receiving efficiency.

[0028] In one possible implementation, the indication information is carried in the start-indicator portion of the preamble, or the indication information is carried in the clock-acquisition portion of the preamble.

[0029] Implementing this method, by carrying the indication information in the start flag section or the clock acquisition section, can save costs.

[0030] In one possible implementation, the indication information is the number of level transitions in the start-indicator portion of the start flag.

[0031] By implementing this method, the level in the start-indicator section can not only indicate the start of transmission, but also the format of the PRDCH, thus achieving two functions and making full use of the level in the start-indicator section.

[0032] In one possible implementation, the indication information is a codeword pattern in the clock-acquisition section of the clock.

[0033] By implementing this method, the codeword pattern in the clock-acquisition section can be used not only for synchronization but also to indicate the format of the PRDCH, thus achieving two functions and making full use of the codeword pattern in the clock-acquisition section.

[0034] In one possible implementation, the R2D information carries information including the first control information and first information, wherein the first information includes the second control information and / or the data information;

[0035] The R2D information also carries verification information;

[0036] The verification information is determined based on the first control information and the first information; or...

[0037] The verification information is determined based on the first information.

[0038] By implementing this method, R2D information can also carry verification information, thereby improving the reliability of R2D information transmission.

[0039] Secondly, this application provides a communication method, the method comprising:

[0040] Receive reader-to-device R2D information, the R2D information carrying at least one of the following: first control information, second control information, or data information, wherein the first control information and the second control information contain different contents;

[0041] The R2D information is parsed.

[0042] In one possible implementation, the first control information includes at least one of the following: device identifier, group identifier, tag identifier, device type, and reader identifier;

[0043] The parsing of the R2D information includes:

[0044] The R2D information is parsed to obtain the first control information;

[0045] Determine whether to continue parsing the R2D information based on the first control information.

[0046] In one possible implementation, the R2D information includes at least a preamble and a reader-to-device physical shared channel (PRDCH).

[0047] In one possible implementation, the first control information is carried in the preamble of the R2D information, or the first control information is carried in the PRDCH of the R2D information;

[0048] The information carried in the R2D information is contained in the preamble and / or the PRDCH.

[0049] In one possible implementation, the second control information is carried in the PRDCH of the R2D information.

[0050] In one possible implementation, the data information is carried in the PRDCH of the R2D information.

[0051] In one possible implementation, the R2D information also carries indication information, which indicates the format of the PRDCH of the R2D information, and the format of the PRDCH indicates the information carried by the PRDCH.

[0052] In one possible implementation, the format of the PRDCH is one of a first format, a second format, or a third format;

[0053] The first format indicates that the PRDCH carries only control information;

[0054] The second format indicates that the PRDCH carries control information and data information;

[0055] The third format indicates that the PRDCH carries only data information;

[0056] The control information includes the first control information and / or the second control information.

[0057] In one possible implementation, the indication information is carried in the preamble of the R2D information.

[0058] In one possible implementation, the indication information is carried in the start-indicator portion of the preamble, or the indication information is carried in the clock-acquisition portion of the preamble.

[0059] In one possible implementation, the indication information is the number of level transitions in the start-indicator portion of the start flag.

[0060] In one possible implementation, the indication information is a codeword pattern in the clock-acquisition section of the clock.

[0061] In one possible implementation, the R2D information carries information including the first control information and first information, wherein the first information includes the second control information and / or the data information;

[0062] The R2D information also carries verification information;

[0063] The method further includes:

[0064] The first control information and the first information are verified based on the verification information; or...

[0065] The first information is verified based on the verification information.

[0066] The beneficial effects of the second aspect and its various alternative implementations can be referred to the beneficial effects of the first aspect and its various alternative implementations, and will not be repeated here.

[0067] Thirdly, embodiments of this application provide a communication device that includes units for implementing the method in any of the possible implementations of the first aspect described above.

[0068] Fourthly, embodiments of this application provide a communication device that includes units for implementing the method in any of the possible implementations of the second aspect described above.

[0069] Fifthly, embodiments of this application provide a communication device including a processor and a memory interconnected thereto. The memory stores a computer program, which includes program instructions. The processor is configured to invoke the program instructions to perform the method described in the first aspect or any optional embodiment of the first aspect, or to perform the method described in the second aspect or any optional embodiment of the second aspect.

[0070] In a sixth aspect, embodiments of this application provide a chip including a processor and an interface, the processor and the interface being coupled; the interface is used to receive and / or output signals, and the processor is used to execute code instructions to perform the method as described in the first aspect or any optional embodiment of the first aspect, or to perform the method as described in the second aspect or any optional embodiment of the second aspect.

[0071] In a seventh aspect, embodiments of this application provide a module device, which includes a communication module, a power module, a storage module, and a chip module, wherein: the power module is used to provide power to the module device; the storage module is used to store data and / or instructions; the communication module communicates with external devices; and the chip module is used to call the data and / or instructions stored in the storage module, and in conjunction with the communication module, to execute the method as described in the first aspect or any optional embodiment of the first aspect, or to execute the method as described in the second aspect or any optional embodiment of the second aspect.

[0072] Eighthly, embodiments of this application provide a computer-readable storage medium storing a computer program, the computer program including program instructions that, when executed by a computer, implement the method as described in the first aspect or any optional embodiment of the first aspect, or implement the method as described in the second aspect or any optional embodiment of the second aspect.

[0073] Ninthly, embodiments of this application provide a computer program product, which includes a computer program or computer code, which, when run on a computer, implements the method described in the first aspect or any optional implementation of the first aspect, and implements the method described in the second aspect or any optional implementation of the second aspect.

[0074] In a tenth aspect, embodiments of this application provide a communication system comprising a reader and an A-IoT device. The reader is configured to perform the method described in the first aspect or any optional embodiment of the first aspect, and the A-IoT device is configured to perform the method described in the second aspect or any optional embodiment of the second aspect. Attached Figure Description

[0075] Figure 1a This is a schematic diagram of a topology provided in an embodiment of this application;

[0076] Figure 1b This is a schematic diagram of another topology provided in an embodiment of this application;

[0077] Figure 2 This is a schematic diagram of the structure of R2D information provided in the embodiments of this application;

[0078] Figure 3 This is a schematic diagram of the structure of the preamble provided in an embodiment of this application;

[0079] Figure 4 This is a flowchart illustrating a communication method provided in an embodiment of this application;

[0080] Figure 5This is a schematic diagram of CRC in the R2D information provided in the embodiments of this application;

[0081] Figure 6 This is another schematic diagram of CRC in the R2D information provided in the embodiments of this application;

[0082] Figure 7 This is a schematic diagram of the structure of a communication device provided in an embodiment of this application;

[0083] Figure 8 This is a schematic diagram of another communication device provided in an embodiment of this application;

[0084] Figure 9 This is a schematic diagram of the structure of another communication device provided in the embodiments of this application;

[0085] Figure 10 This is a schematic diagram of the structure of a module device provided in an embodiment of this application. Detailed Implementation

[0086] In this embodiment of the application, unless otherwise stated, the character " / " indicates that the preceding and following objects are in an OR relationship. For example, A / B can represent A or B. "AND / OR" describes the relationship between the associated objects, indicating that three relationships can exist. For example, A AND / OR B can represent: A existing alone, A and B existing simultaneously, and B existing alone.

[0087] It should be noted that the terms "first" and "second" used in the embodiments of this application are used only for distinguishing descriptive purposes and should not be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated, nor should they be construed as indicating or implying order.

[0088] In the embodiments of this application, "at least one" refers to one or more items, and "more than one" refers to two or more items. Furthermore, "at least one of the following" or similar expressions refer to any combination of these items, which may include any combination of a single item or a plurality of items. For example, at least one of A, B, or C can represent: A, B, C, A and B, A and C, B and C, or A, B, and C. Each of A, B, and C can be an element itself or a set containing one or more elements.

[0089] In this application, terms such as "exemplary," "in some embodiments," and "in another embodiment" are used to indicate that something is an example, illustration, or description. Any embodiment or design described as "exemplary" in this application should not be construed as being more preferred or advantageous than other embodiments or designs. Specifically, the use of the term "exemplary" is intended to present the concept in a concrete manner.

[0090] In the embodiments of this application, the terms "of," "corresponding (relevant)," and "corresponding" may sometimes be used interchangeably. It should be noted that, without emphasizing the distinction, their meanings are consistent. Similarly, in the embodiments of this application, "communication" and "transmission" may sometimes be used interchangeably. It should be noted that, without emphasizing the distinction, their meanings are consistent. For example, transmission can include sending and / or receiving, and can be a noun or a verb.

[0091] In the embodiments of this application, the term "equal to" can be used in conjunction with "greater than" to apply to technical solutions employing the condition of "greater than", and can also be used in conjunction with "less than" to apply to technical solutions employing the condition of "less than". It should be noted that when "equal to" is used with "greater than", it cannot be used with "less than"; and when "equal to" is used with "less than", it cannot be used with "greater than".

[0092] Ambient Internet of Things (A-IoT) is a novel Internet of Things (IoT) technology. Compared to traditional IoT technologies, A-IoT systems utilize a much larger number of terminals (hereinafter referred to as A-IoT devices). For example, A-IoT devices can be A-IoT terminals, A-IoT user equipment (UE), and devices with A-IoT functionality represented by tags. An A-IoT system may also include a reader, which communicates with A-IoT devices wirelessly for contactless, two-way data exchange; for example, it can read and write to A-IoT devices such as electronic tags or RFID cards using radio frequency (RF) technology.

[0093] In this embodiment, communication between the reader and the A-IoT device is referred to as R2D communication, or R2D transmission, or the reader sending R2D information. Communication between the A-IoT device and the reader is referred to as device-to-reader (D2R) communication, or D2R transmission, or the A-IoT device sending D2R information.

[0094] The following is combined with Figure 1a and Figure 1b Describe the topology of the A-IoT system:

[0095] like Figure 1a The diagram shown is a schematic representation of a topology provided in an embodiment of this application. Figure 1a In the example of a network device performing the function of a reader, in Figure 1aIn this context, A-IoT devices and network devices directly transmit data. The information sent from the network device to the A-IoT device is called R2D information, and the information sent from the A-IoT device to the network device is called D2R information.

[0096] To improve the communication distance between A-IoT devices and network devices, the following methods can also be used: Figure 1b The topology shown is as follows: Figure 1b As shown, there are intermediate devices between A-IoT devices and network devices for forwarding. These intermediate devices can be relays, integrated access and backhaul (IAB) nodes, terminal devices, repeaters, etc. Figure 1b The example used is an intermediate device that is a terminal device (such as a smartphone).

[0097] exist Figure 1b In this context, taking the intermediate device performing the reader's function as an example, the information sent by the intermediate device to the A-IoT device is called R2D information, and the information sent by the A-IoT device to the network device is called D2R information. The intermediate device sends uplink information to the network device, and the network device sends downlink information to the intermediate device.

[0098] The aforementioned A-IoT device can be referred to as a terminal, access terminal, user unit, user station, mobile station, mobile station, remote station, remote terminal, mobile device, user terminal, wireless communication device, user agent, user device, or target terminal. This A-IoT device can be a passive IoT terminal or a tag. It can be a passive device, specifically a passive tag that collects energy through backscattering technology to transmit and receive messages. Passive tags include, but are not limited to, radio frequency identification (RFID), Bluetooth, Zigbee, and other power-free terminal tags. This A-IoT device can also be a semi-passive device or an active device. Active devices can be devices with wireless transceiver capabilities, such as mobile phones, tablets, computers with wireless transceiver capabilities, virtual reality (VR) terminals, augmented reality (AR) terminals, wireless terminals in industrial control, wireless terminals in self-driving, wireless terminals in remote medical care, wireless terminals in smart grids, wireless terminals in transportation safety, wireless terminals in smart cities, wireless terminals in smart homes, cellular phones, cordless phones, session initiation protocol (SIP) phones, wireless local loop (WLL) stations, and personal digital assistants.

[0099] The aforementioned network equipment can also be referred to as access network equipment, radio access network (RAN) equipment, etc. These network devices can support at least one wireless communication technology, such as LTE, NR, etc. Examples of network equipment include, but are not limited to: next-generation base stations (gNB) in 5th-generation (5G) mobile communication systems, base stations in 6th-generation (6G) mobile communication systems, evolved node B (eNB), radio network controller (RNC), node B (NB), base station controller (BSC), base transceiver station (BTS), home base station (e.g., home evolved node B, or home node B (HNB)), baseband unit (BBU), transmitting and receiving point (TRP), transmitting point (TP), mobile switching center, etc. Network devices can also be wireless controllers, centralized units (CUs), and / or distributed units (DUs) in cloud radio access network (CRAN) scenarios, or they can be relay stations, access points, vehicle-mounted devices, terminal devices, wearable devices, and network devices in future mobile communications or future evolved PLMNs. In some embodiments, network devices can also be means for providing wireless communication capabilities to terminal devices, such as chip systems. For example, a chip system may include chips, and may also include other discrete components.

[0100] The following explains some of the technical terms used in this application.

[0101] 1. R2D Information

[0102] In this embodiment, R2D information is information sent by the reader to the A-IoT device. R2D information can also be understood as R2D transmission, R2D frame, or R2D frame structure, etc.

[0103] like Figure 2As shown, R2D information includes at least a preamble and a Physical Reader to Device Shared channel (PRDCH), and optionally, a postamble.

[0104] like Figure 3 As shown, the preamble can include at least a start indicator part and a clock-acquisition part. Optionally, the preamble can also include other parts, such as a part for channel estimation, a part for carrying first control information, a part for carrying indication information, etc. The indication information is used to indicate the format of the PRDCH. It is understood that the first control information and the indication information can also be carried in the same part; the above is just an example.

[0105] The part mentioned in the embodiments of this application can be understood as dividing the preamble into at least two parts, for example, such as Figure 3 As shown, the preamble is divided into three parts. It is understandable that the preamble could be divided into other numbers of parts, such as four parts, etc., and this application does not limit this. In the embodiments of this application, the first part is called the start flag part, and the second part is called the clock acquisition part. The start flag part and the clock acquisition part are simply names of different parts of the preamble.

[0106] The start flag section is used to mark the beginning of R2D information transmission. The start flag section can also be called a delimiter. The start flag section may include a specific format of voltage levels used to indicate the start of R2D information transmission. For example, this specific format of voltage levels may be a low voltage level for a period of time, or a combination of one or more high and low voltage levels.

[0107] For example, the reader can send a high level for a period of time before sending R2D information, and then change from a high level to a low level in the start flag part of the R2D information to indicate the start of R2D information transmission.

[0108] The clock-acquisition section is used for synchronization.

[0109] R2D information can carry control information and / or data information. Control information can be carried in the preamble of the R2D information or in the PRDCH, and data information can be carried in the PRDCH.

[0110] 2. Control information carried in R2D information

[0111] The control information carried in the R2D information can be used to schedule PRDCH transmissions. The scheduled PRDCH can be the PRDCH in the R2D information (i.e., the current PRDCH transmission), or the scheduled PRDCH can be the PRDCH for the next transmission. In some embodiments, the control information carried in the R2D information can also be used to schedule the D2R transmission / Physical Device to Reader Shared channel (PDRCH).

[0112] Control information may include at least one of the following:

[0113] 1. Time domain resource allocation information

[0114] 2. Modulation and Coding Scheme (MCS) and / or coding rate

[0115] 3. Transport Block Size (TBS)

[0116] 4. Number of repetitions

[0117] 5. At least one of the following: Device ID, Device Group ID, Device Type, and Cast Type.

[0118] The transmission type can include, but is not limited to, unicast, multicast, or broadcast.

[0119] 6. Frequency domain resource allocation information

[0120] 7. Reader ID

[0121] 8. Chip duration

[0122] In this embodiment of the application, the control information is divided into two categories: first control information and second control information. The first control information can also be called first-order control information or first-level control information, and the second control information can also be called second-order control information or second-level control information.

[0123] The contents of the first control information and the second control information are different, and this application does not limit them. In the embodiments of this application, the information contained in the first control information plus the information contained in the second control information (the information contained in the first control information plus the information contained in the second control information is the control information mentioned above) is used to schedule R2D information / PRDCH. Optionally, it can also be used to schedule D2R information / PDRCH. The first control information can be used to indicate at least one of the following: the sending node of the R2D information (e.g., reader identifier), the receiving node of the R2D information (e.g., device identifier or tag identifier), the group to which the receiving node of the R2D information belongs (e.g., group identifier), and the device type of the receiving node of the R2D information (e.g., device type). The second control information can be other information in the control information besides the first control information. For example, the control information includes items 1, 5, and 6 mentioned above, the first control information can include item 5 of the above control information, and the second control information can include items 1 and 6 of the above control information.

[0124] Compared to the second control information, the first control information can be understood as the control information that the receiving end (e.g., an A-IoT device) needs to decode first. For example, the receiving end (e.g., an A-IoT device) first decodes the first control information from the R2D information, and then decodes other information carried in the R2D information according to the first control information. The other information may include, for example, the second control information and / or data information.

[0125] It should be noted that the various technical solutions (or embodiments) of this application can be implemented independently or in combination based on certain inherent relationships. This application does not impose any limitations. Furthermore, various terms and definitions between the embodiments can be referenced mutually. In each embodiment of this application, different implementation methods can also be implemented in combination or independently.

[0126] Please refer to Figure 4 This is a flowchart illustrating a communication method provided in an embodiment of this application, as shown below. Figure 4 As shown, the communication method of this embodiment includes the following steps 401, and optionally, may also include step 402. Steps 401-402 are described below:

[0127] 401, the reader sends R2D information. Correspondingly, the A-IoT device receives the R2D information.

[0128] 402, A-IoT devices parse R2D information.

[0129] Step 402 is an optional step.

[0130] The R2D information may carry at least one of the following: first control information, second control information, or data information. The first control information and the second control information contain different contents. In the embodiments of this application, "carried" can also be understood as "bearing".

[0131] The first control information can also be called first-order control information or first-level control information, and the second control information can also be called second-order control information or second-level control information. The first control information may include one or more pieces of information, and the second control information may also include one or more pieces of information. For a detailed explanation of the first and second control information, please refer to the aforementioned terminology explanation.

[0132] In some embodiments, for the first control information and the second control information, the A-IoT device first decodes the first control information from the R2D information, and then decodes other information in the R2D information according to the first control information. The other information may include, for example, the second control information and / or data information. That is, the decoding priority of the first control information is higher than that of the second control information.

[0133] For example, the first control information may include at least one of the following: device identifier, group identifier, tag identifier, device type, and reader identifier. The A-IoT device can determine whether to continue parsing the R2D information based on at least one of the parsed device identifier, group identifier, tag identifier, device type, and reader identifier, thereby obtaining other information carried in the R2D information.

[0134] The device identifier or tag identifier is used to identify the A-IoT device receiving the R2D information. If the A-IoT device's device identifier is the same as the device identifier contained in the first control information, or if the A-IoT device's tag identifier is the same as the tag identifier contained in the first control information, then it is determined that the R2D information was sent to the A-IoT device, and the A-IoT device can continue to parse the second control information and / or data information carried in the R2D information. If the A-IoT device's device identifier is different from the device identifier contained in the first control information, or if the A-IoT device's tag identifier is different from the tag identifier contained in the first control information, then the A-IoT device will not continue to parse the R2D information.

[0135] The group identifier is used to identify the device group receiving the R2D information. If the group identifier of the device group to which the A-IoT device belongs is the same as the group identifier contained in the first control information, the A-IoT device can continue to parse the second control information and / or data information in the R2D information. If the group identifier of the device group to which the A-IoT device belongs is different from the group identifier contained in the first control information, the A-IoT device will not continue to parse the R2D information.

[0136] The device type is used to indicate the device type of the A-IoT device receiving the R2D information. When the device type of the A-IoT device is the same as the device type contained in the first control information, the A-IoT device can continue to parse the second control information and / or data information in the R2D information. When the device type of the A-IoT device is different from the device type contained in the first control information, the A-IoT device will not continue to parse the R2D information.

[0137] The reader identifier is used to identify the reader that sent the R2D information. When the A-IoT device is waiting to receive R2D information from the target reader, when parsing the reader identifier contained in the first control information, the A-IoT device can match the reader identifier with the reader identifier of the target reader. If the reader identifier contained in the first control information is the same as the reader identifier of the target reader, the A-IoT device can continue to parse the second control information and / or data information in the R2D information. If the reader identifier contained in the first control information is different from the reader identifier of the target reader, the A-IoT device will not continue to parse the R2D information.

[0138] In some implementations, the first control information may further include indication information, which indicates the format of the PRDCH of the R2D information. The format of the PRDCH indicates the information carried by the PRDCH. For a description of the PRDCH format, please refer to the "PRDCH Format" section in the following embodiments. If the first control information includes indication information indicating the format of the PRDCH, the A-IoT device can parse the PRDCH according to the format indicated by the indication information.

[0139] For example, the first control information may be carried in the preamble of the R2D information. Alternatively, the first control information may be carried in other parts of the preamble.

[0140] For example, the first control information can be carried in the R2D information PRDCH.

[0141] For example, the second control information can be carried in the PRDCH of the R2D information. When both the first and second control information are carried in the PRDCH, the first control information precedes the second control information. In some embodiments, the second control information can be carried in a medium access control (MAC) control element (CE), while the first control information is carried in the R2D information. The first control information can be carried in the preamble or the PRDCH of the R2D information.

[0142] For example, data information can be carried in the PRDCH of R2D information. When the PRDCH carries both second control information and data information, the second control information is positioned before the data information.

[0143] In some embodiments, to improve transmission reliability, the R2D information may also carry verification information. This verification information can be determined based on at least one of the first control information, second control information, and data information carried in the R2D information. The verification information may, for example, be a Cyclic Redundancy Check (CRC) code. This verification information can be carried in the PRDCH.

[0144] The following example illustrates the verification information using R2D information carrying first control information and first information. The first information includes second control information and / or data information. In other words, R2D information carries not only first control information but also second control information and / or data information.

[0145] In one implementation, the verification information can be determined based on the first information. That is, the verification information is determined based on the data information and / or the second control information. Accordingly, after receiving the R2D information, the A-IoT device parses the first control information from it and determines whether to continue parsing the R2D information based on the first control information. If it determines to continue parsing the R2D information, it parses the first information and the verification information from it. The A-IoT device then verifies the received first information based on the verification information. In this implementation, the first control information can be parsed in advance, thereby determining whether to continue parsing other information carried in the R2D information, which can improve reception efficiency and save power consumption.

[0146] like Figure 5 As shown, taking CRC as an example, the CRC is determined based on the first piece of information. Figure 5 In this example, the first control information is carried in the preamble, and the first information and CRC are carried in the PRDCH. In this implementation, the A-IoT device first parses the first control information from the preamble and determines whether to continue parsing the PRDCH based on the first control information. If it determines to continue parsing the PRDCH, it parses the first information and CRC from the R2D information and verifies the first information based on the CRC.

[0147] Another implementation involves determining the verification information based on the first control information and the first information. Accordingly, after receiving R2D information, the A-IoT device parses the first control information from it and determines whether to continue parsing the R2D information. If it decides to continue parsing, it parses the first information and verification information from the R2D information. The A-IoT device then verifies the received first control information and the first information based on the verification information. In this implementation, the first control information can be parsed in advance, allowing for the determination of whether to continue parsing other information carried in the R2D information, which improves reception efficiency and saves power. Furthermore, since the verification information is generated with the first control information in mind, it can be further verified after parsing, improving the robustness of the first control information transmission.

[0148] like Figure 6 As shown, taking CRC as an example for verification information, this CRC is determined based on the first control information and the first information. Figure 6 In this example, the first control information is carried in the preamble, and the first information and CRC are carried in the PRDCH. In this implementation, the A-IoT device first parses the first control information from the preamble and determines whether to continue parsing the PRDCH based on the first control information. If it determines to continue parsing the PRDCH, it continues to parse the R2D information to obtain the first information and CRC, and verifies the first information and the first control information based on the CRC.

[0149] The following example illustrates the format of PRDCH.

[0150] To facilitate the determination of the information carried in the PRDCH, embodiments of this application propose a PRDCH format, which indicates the information carried by the PRDCH. Examples are given below; for instance, the PRDCH format can be one of a first format, a second format, or a third format. Examples of the first, second, and third formats are provided below, and it is understood that the control information described below may include first control information and / or second control information.

[0151] The first format indicates that the PRDCH carries only control information. The second format indicates that the PRDCH carries both control and data information. The third format indicates that the PRDCH carries only data information.

[0152] In some embodiments, the format of the PRDCH may also indicate that the PRDCH carries first control information and / or second control information. For example, a first format indicates that the PRDCH carries both first and second control information. A second format indicates that the PRDCH carries both first control information and data information, a third format indicates that the PRDCH carries only the first control information, and so on.

[0153] In the embodiments of this application, the format of PRDCH can be indicated by indication information in the R2D information, and this indication information can be carried in the preamble of the R2D information.

[0154] The indication information can be carried in the start-indicator part of the preamble, or in the clock-acquisition part of the preamble, or in other parts of the preamble. Examples are given below:

[0155] In one implementation, the indication information can be carried in the start-indicator portion of the preamble. For example, the indication information can be the number of level transitions in the start-indicator portion. Different levels of transitions are used to indicate different PRDCH formats. For instance, if the start-indicator portion does not transition, the number of level transitions is 0. For example, if the start-indicator portion is entirely low, the number of level transitions is 0, and a number of level transitions of 0 can also indicate a PRDCH format. The number of level transitions in the start-indicator portion indicating the PRDCH format can also be understood as the level pattern in the start-indicator portion indicating the PRDCH format. The length of the high level in the start-indicator portion differs from the length of the high level in the clock-acquisition portion; and / or, the length of the low level in the start-indicator portion differs from the length of the low level in the clock-acquisition portion. The difference in level length distinguishes the start-indicator portion from the clock-acquisition portion. In this implementation, the indication information is carried in the start-indicator portion, which can indicate not only the start of R2D information transmission but also the format of the PRDCH, thus eliminating the need for additional bits to indicate the PRDCH format and saving overhead.

[0156] In another implementation, the indication information can be carried in the clock-acquisition section of the preamble. For example, the indication information can be a codeword pattern in the clock-acquisition section. Different codeword patterns are used to indicate different PRDCH formats. For instance, if the codeword pattern in the clock-acquisition section is 10, it indicates the first format; if the codeword pattern is 11, it indicates the second format. Furthermore, the codeword pattern in the clock-acquisition section can be encoded to obtain a level pattern. For example, using Manchester encoding, codeword 1 can be encoded as 10, codeword 0 can be encoded as 01, and the encoded 0 represents a low level, while the encoded 1 represents a high level.

[0157] If the indication information is carried in other parts of the preamble, the format of the PRDCH can be indicated by one or more bits of information in those other parts. For example, the first format can be indicated by bit 0 in other parts, and the second format can be indicated by bit 1 in other parts.

[0158] Please see Figure 7 , Figure 7 This is a schematic diagram of a communication device provided in an embodiment of this application, which is applied to a reader. For example, the communication device can be a reader, or a device within the reader, such as a chip or chip module within the reader, or a device compatible with the reader. Figure 7 The communication device 100 shown may include a transmitting unit 110, wherein:

[0159] The sending unit 110 is used to send reader-to-device R2D information, the R2D information carrying at least one of the following: first control information, second control information, or data information, wherein the first control information and the second control information contain different contents.

[0160] In one possible implementation, the first control information includes at least one of the following: device identifier, group identifier, tag identifier, device type, and reader identifier.

[0161] In one possible implementation, the R2D information includes at least a preamble and a PRDCH;

[0162] The information carried in the R2D information is contained in the preamble and / or the PRDCH.

[0163] In one possible implementation, the first control information is carried in the preamble of the R2D information, or the first control information is carried in the PRDCH of the R2D information.

[0164] In one possible implementation, the second control information is carried in the PRDCH of the R2D information.

[0165] In one possible implementation, the data information is carried in the PRDCH of the R2D information.

[0166] In one possible implementation, the R2D information also carries indication information, which indicates the format of the PRDCH of the R2D information, and the format of the PRDCH indicates the information carried by the PRDCH.

[0167] In one possible implementation, the format of the PRDCH is one of a first format, a second format, or a third format;

[0168] The first format indicates that the PRDCH carries only control information;

[0169] The second format indicates that the PRDCH carries control information and data information;

[0170] The third format indicates that the PRDCH carries only data information;

[0171] The control information includes the first control information and / or the second control information.

[0172] In one possible implementation, the indication information is carried in the preamble of the R2D information.

[0173] In one possible implementation, the indication information is carried in the start-indicator portion of the preamble, or the indication information is carried in the clock-acquisition portion of the preamble.

[0174] In one possible implementation, the indication information is the number of level transitions in the start-indicator portion of the start flag.

[0175] In one possible implementation, the indication information is a codeword pattern in the clock-acquisition section of the clock.

[0176] In one possible implementation, the R2D information carries information including the first control information and first information, wherein the first information includes the second control information and / or the data information;

[0177] The R2D information also carries verification information;

[0178] The verification information is determined based on the first control information and the first information; or...

[0179] The verification information is determined based on the first information.

[0180] about Figure 7 For a detailed description of the specific implementation, please refer to the description of the foregoing method implementation, which will not be repeated here.

[0181] Please see Figure 8 , Figure 8 This is a schematic diagram of another communication device provided in an embodiment of this application. This communication device is applied to an A-IoT device. For example, the communication device can be an A-IoT device itself, or a component within an A-IoT device, such as a chip or chip module within the A-IoT device, or a device that can be used in conjunction with an A-IoT device.

[0182] Figure 8 The communication device 200 shown may include a receiving unit 210 and a parsing unit 220, wherein:

[0183] The receiving unit 210 is configured to receive reader-to-device R2D information, wherein the R2D information carries at least one of the following: first control information, second control information, or data information, wherein the first control information and the second control information contain different contents;

[0184] The parsing unit 220 is used to parse the R2D information.

[0185] In one possible implementation, the first control information includes at least one of the following: device identifier, group identifier, tag identifier, device type, and reader identifier;

[0186] Parsing unit 220 is specifically used for:

[0187] The R2D information is parsed to obtain the first control information;

[0188] Determine whether to continue parsing the R2D information based on the first control information.

[0189] In one possible implementation, the R2D information includes at least a preamble and a PRDCH;

[0190] The information carried in the R2D information is contained in the preamble and / or the PRDCH.

[0191] In one possible implementation, the first control information is carried in the preamble of the R2D information, or the first control information is carried in the PRDCH of the R2D information.

[0192] In one possible implementation, the second control information is carried in the PRDCH of the R2D information.

[0193] In one possible implementation, the R2D information also carries indication information, which indicates the format of the PRDCH of the R2D information, and the format of the PRDCH indicates the information carried by the PRDCH.

[0194] In one possible implementation, the format of the PRDCH is one of a first format, a second format, or a third format;

[0195] The first format indicates that the PRDCH carries only control information;

[0196] The second format indicates that the PRDCH carries control information and data information;

[0197] The third format indicates that the PRDCH carries only data information;

[0198] The control information includes the first control information and / or the second control information.

[0199] In one possible implementation, the indication information is carried in the preamble of the R2D information.

[0200] In one possible implementation, the indication information is carried in the start-indicator portion of the preamble, or the indication information is carried in the clock-acquisition portion of the preamble.

[0201] In one possible implementation, the indication information is the number of level transitions in the start-indicator portion of the start flag.

[0202] In one possible implementation, the R2D information carries information including the first control information and first information, wherein the first information includes the second control information and / or the data information;

[0203] The R2D information also carries verification information;

[0204] The parsing unit 220 is further configured to verify the first control information and the first information based on the verification information; or...

[0205] The first information is verified based on the verification information.

[0206] about Figure 8 For a detailed description of the specific implementation, please refer to the description of the foregoing method implementation, which will not be repeated here.

[0207] Please see Figure 9 , Figure 9 This is a schematic diagram of a communication device provided in an embodiment of this application, used to implement the function of a reader in the above method embodiments, or to implement the function of an A-IoT device in the above method embodiments. The communication device 300 can be a reader or a device for a reader. The device for a reader can be a chip system or a chip within the reader. The communication device can also be an A-IoT device or a device for an A-IoT device. The device for an A-IoT device can be a chip system or a chip within the A-IoT device. The chip system can be composed of chips, or it can include chips and other discrete components.

[0208] The communication device 300 includes at least one processor 320 for implementing the data processing functions of the reader or A-IoT device in the method provided in this application embodiment. The communication device 300 may also include a communication interface 310 for implementing the transmit and receive operations of the reader or A-IoT device in the method provided in this application embodiment. In this application embodiment, the processor 320 may be a Central Processing Unit (CPU), which may also be other general-purpose processors, digital signal processors (DSPs), application-specific integrated circuits (ASICs), field-programmable gate arrays (FPGAs), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. The general-purpose processor may be a microprocessor or any conventional processor. In this application embodiment, the communication interface 310 may be a transceiver, circuit, bus, module, or other type of communication interface for communicating with other devices via a transmission medium. For example, the communication interface 310 enables the communication device 300 to communicate with other devices. The processor 320 uses the communication interface 310 to send and receive data, and is used to implement the method described in the above method embodiments.

[0209] The communication device 300 may further include at least one memory 330 for storing program instructions and / or data. The memory 330 is coupled to the processor 320. The coupling in this embodiment is an indirect coupling or communication connection between devices, units, or modules, and may be electrical, mechanical, or other forms, used for information exchange between devices, units, or modules. The processor 320 may operate in conjunction with the memory 330. The processor 320 may execute program instructions stored in the memory 330. At least one of the at least one memories may be included in the processor.

[0210] When the communication device 300 is powered on, the processor 320 can read the software program in the memory 330, interpret and execute the instructions of the software program, and process the data of the software program. When it is necessary to transmit data wirelessly, the processor 320 performs baseband processing on the data to be transmitted and outputs the baseband signal to the radio frequency circuit. Figure 9 (Not shown) The radio frequency (RF) circuit processes the baseband signal and then transmits the RF signal outward as electromagnetic waves through the antenna. When data is sent to the communication device 300, the RF circuit receives the RF signal through the antenna, converts the RF signal into a baseband signal, and outputs the baseband signal to the processor 320. The processor 320 converts the baseband signal into data and processes the data.

[0211] In another implementation, the radio frequency circuitry and antenna can be set up independently of the processor 320 that performs baseband processing. For example, in a distributed scenario, the radio frequency circuitry and antenna can be arranged remotely, independent of the device.

[0212] This application embodiment does not limit the specific connection medium between the communication interface 310, processor 320, and memory 330. This application embodiment... Figure 9 The memory 330, processor 320, and communication interface 310 are connected via a bus 340. Figure 9 The connections between other components are shown in bold and are for illustrative purposes only, not as limiting information. The bus can be divided into address bus, data bus, control bus, etc. For ease of illustration, Figure 9 The bus is represented by a single thick line, but this does not mean that there is only one bus or one type of bus.

[0213] When the communication device 300 is specifically used in a reader, such as when the communication device 300 is specifically a chip or chip system, the communication interface 310 can output or receive baseband signals. When the communication device 300 is specifically an A-IoT device, the communication interface 310 can output or receive radio frequency signals.

[0214] It should be noted that the device can perform the relevant steps of the reader or A-IoT device in the aforementioned method embodiments. For details, please refer to the implementation methods provided in the above steps, which will not be repeated here.

[0215] For each device or product applied to or integrated into a device, each of its modules can be implemented using hardware such as circuits. Different modules can be located in the same component (e.g., chip, circuit module, etc.) or different components within the reader. Alternatively, at least some modules can be implemented using software programs that run on the processor integrated within the reader, while the remaining (if any) modules can be implemented using hardware such as circuits.

[0216] The aforementioned memory can be volatile memory or non-volatile memory, or may include both. Non-volatile memory can be read-only memory (ROM), programmable read-only memory (PROM), erasable programmable read-only memory (EPROM), electrically erasable programmable read-only memory (EEPROM), or flash memory. Volatile memory can be random access memory (RAM), which serves as an external cache. By way of example, but not limitation, many forms of random access memory (RAM) are available, such as static random access memory (SRAM), dynamic random access memory (DRAM), synchronous dynamic random access memory (SDRAM), double data rate synchronous dynamic random access memory (DDR SDRAM), enhanced synchronous dynamic random access memory (ESDRAM), synchronous linked dynamic random access memory (SLDRAM), and direct rambus RAM (DR RAM).

[0217] This application provides a chip. The chip includes a processor, and optionally, a memory. The number of processors and the number of memories can be one or more. The processor can execute the methods shown in the above-described method embodiments and the steps performed in related implementations by reading instructions and data stored in the memory.

[0218] like Figure 10 As shown, Figure 10 This is a schematic diagram of the structure of a module device provided in an embodiment of this application. The module device 400 can perform the relevant steps of the reader in the aforementioned method embodiments, or the module device 400 can perform the relevant steps of the A-IoT device in the aforementioned method embodiments.

[0219] The module device 400 includes a communication module 410, a power module 420, a storage module 430, and a chip module 440. The power module 420 provides power to the module device; the storage module 430 stores data and / or instructions; the communication module 410 communicates with external devices; and the chip module 440 retrieves the data and / or instructions stored in the storage module 430. Combined with the communication module 410, the method described in the above embodiments and the steps performed in related implementations can be executed.

[0220] This application also provides a computer-readable storage medium. The computer-readable storage medium stores a computer program, which includes program instructions. When an electronic device executes the program instructions, it implements the steps performed by the reader in the method embodiments described above, or the steps performed by the A-IoT device in the method embodiments described above.

[0221] The computer-readable storage medium can be an internal storage unit of the reader or A-IoT device described in any of the foregoing embodiments, such as the device's hard drive or memory. The computer-readable storage medium can also be an external storage device of the reader or A-IoT device, such as a plug-in hard drive, smart media card (SMC), secure digital (SD) card, flash card, etc., equipped on the device. Further, the computer-readable storage medium can include both internal storage units and external storage devices of the reader or A-IoT device. The computer-readable storage medium is used to store the computer program and other programs and data required by the reader or A-IoT device. The computer-readable storage medium can also be used to temporarily store data that has been output or will be output. The computer-readable storage medium can be any available medium that a computer can access or a data storage device such as a server or data center that includes one or more sets of available media. The available media can be magnetic media (e.g., floppy disks, hard drives, magnetic tapes), optical media (e.g., high-density digital video discs (DVDs)), or semiconductor media. Semiconductor media can be solid-state drives.

[0222] Regarding the modules / units included in the various devices and products described in the above embodiments, they can be software modules / units, hardware modules / units, or a combination of both. For example, for devices and products applied to or integrated into a chip, all modules / units can be implemented using hardware methods such as circuits, or at least some modules / units can be implemented using software programs that run on a processor integrated within the chip, while the remaining (if any) modules / units can be implemented using hardware methods such as circuits. For devices and products applied to or integrated into a chip module, all modules / units can be implemented using hardware methods such as circuits. Different modules / units can be located in the same component (e.g., chip, circuit module, etc.) or different components of the chip module, or at least some modules / units can be implemented using hardware methods such as circuits. The implementation can be done through software programs running on a processor integrated within the chip module. The remaining modules / units (if any) can be implemented using hardware methods such as circuits. For various devices and products applied to or integrated into data acquisition nodes, each module / unit can be implemented using hardware methods such as circuits. Different modules / units can be located in the same component (e.g., chip, circuit module, etc.) or different components within the terminal device. Alternatively, at least some modules / units can be implemented through software programs running on a processor integrated within the data acquisition node, while the remaining modules / units (if any) can be implemented using hardware methods such as circuits.

[0223] The above embodiments can be implemented, in whole or in part, by software, hardware, firmware, or any other combination thereof. When implemented using software, the above embodiments can be implemented, in whole or in part, as a computer program product. The computer program product includes one or more computer instructions or computer programs. When the computer instructions or computer program are loaded or executed on a computer, all or part of the processes or functions described in the embodiments of this application are generated. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. The computer instructions can be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another. For example, the computer instructions can be transmitted from one website, computer, server, or data center to another website, computer, server, or data center via wired or wireless means.

[0224] It should be understood that in the various embodiments of this application, the order of the above-mentioned processes does not imply the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of this application.

[0225] In the several embodiments provided in this application, it should be understood that the disclosed methods, apparatuses, and systems can be implemented in other ways. For example, the apparatus embodiments described above are merely illustrative; for example, the division of units is merely a logical functional division, and other division methods may exist in actual implementation; for example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the coupling or direct coupling or communication connection shown or discussed may be through some interfaces, and the indirect coupling or communication connection between devices or units may be electrical, mechanical, or other forms.

[0226] The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0227] Furthermore, the functional units in the various embodiments of the present invention can be integrated into one processing unit, or each unit can be physically comprised separately, or two or more units can be integrated into one unit. The integrated unit described above can be implemented in hardware or in the form of hardware plus software functional units.

[0228] The integrated unit implemented as a software functional unit described above can be stored in a computer-readable storage medium. This software functional unit, stored in a storage medium, includes several instructions to cause a computer device (which may be a personal computer, a server, or a gateway node, etc.) to execute some steps of the methods described in the various embodiments of the present invention.

[0229] Those skilled in the art will understand that all or part of the processes in the above embodiments can be implemented by a computer program instructing related hardware. The program can be stored in a computer-readable storage medium, and when executed, it can include the processes of the embodiments of the above methods. The storage medium can be a magnetic disk, optical disk, read-only memory (ROM), or random access memory (RAM), etc.

[0230] The above-disclosed embodiments are merely preferred embodiments of this application and should not be construed as limiting the scope of this application. Those skilled in the art will understand that all or part of the processes for implementing the above embodiments and equivalent variations made in accordance with the claims of this application are still within the scope of this application.

Claims

1. A communication method characterized by comprising: The R2D information comprises: sending reader-to-device R2D information, the R2D information carrying at least one of the following: first control information, second control information, or data information, the first control information being different from the second control information in content.

2. The method of claim 1, wherein, The first control information comprises at least one of the following: device identity, group identity, tag identity, device type, reader identity.

3. The method of claim 1 or 2, wherein, The R2D information comprises at least a preamble and a physical reader-to-device channel PRDCH. The information carried in the R2D information is carried in the preamble and / or the PRDCH.

4. The method of claim 3, wherein, The first control information is carried in the preamble of the R2D information, or the first control information is carried in the PRDCH of the R2D information.

5. The method of claim 3 or 4, wherein, The second control information is carried in the PRDCH of the R2D information.

6. The method according to any one of claims 3 to 5, wherein, The data information is carried in the PRDCH of the R2D information.

7. The method according to any one of claims 3 to 6, wherein, The R2D information further carries indication information, the indication information indicating a format of the PRDCH of the R2D information, the format of the PRDCH indicating information carried by the PRDCH.

8. The method of claim 7, wherein, The format of the PRDCH is one of a first format, a second format, or a third format. The first format indicates that the PRDCH carries only control information. The second format indicates that the PRDCH carries control information and data information. The third format indicates that the PRDCH carries only data information. The control information comprises the first control information and / or the second control information.

9. The method of claim 7 or 8, wherein, The indication information is carried in the preamble of the R2D information.

10. The method of claim 9, wherein, The indication information is carried in a start-indicator part of the preamble, or the indication information is carried in a clock-acquisition part of the preamble.

11. The method of claim 10, wherein, The indication information is a number of level jumps in the start-indicator part.

12. The method of claim 10, wherein, The indication information is a code word pattern in the clock-acquisition part.

13. The method of any one of claims 1-12, wherein, The information carried by the R2D information comprises the first control information and first information, the first information comprising the second control information and / or the data information. The R2D information further carries check information. The check information is determined based on the first control information and the first information, or The check information is determined based on the first information.

14. A communication method, comprising: The R2D information comprises: receiving reader-to-device R2D information, the R2D information carrying at least one of the following: first control information, second control information, or data information, the first control information being different from the second control information in content; parsing the R2D information.

15. The method of claim 14, wherein, The first control information comprises at least one of the following: device identity, group identity, tag identity, device type, reader identity. The parsing of the R2D information comprises: parsing the R2D information to obtain the first control information; determining whether to continue parsing the R2D information according to the first control information.

16. The method of claim 14 or 15, wherein, The R2D information at least includes a preamble and a physical reader-to-device channel (PRDCH). Information carried in the R2D information is carried in the preamble and / or the PRDCH.

17. The method of claim 16, wherein, The first control information is carried in the preamble of the R2D information, or the first control information is carried in the PRDCH of the R2D information.

18. The method of claim 16 or 17, wherein, The second control information is carried in the PRDCH of the R2D information.

19. The method of any one of claims 16-18, wherein, The R2D information further carries indication information, which indicates a format of the PRDCH of the R2D information, and the format of the PRDCH indicates information carried in the PRDCH.

20. The method of claim 19, wherein, The format of the PRDCH is one of a first format, a second format, or a third format. The first format indicates that the PRDCH only carries control information. The second format indicates that the PRDCH carries control information and data information. The third format indicates that the PRDCH only carries data information. The control information includes the first control information and / or the second control information.

21. The method of claim 20, wherein, The indication information is carried in the preamble of the R2D information.

22. The method of claim 21, wherein, The indication information is carried in a start-indicator part of the preamble, or the indication information is carried in a clock-acquisition part of the preamble.

23. The method of claim 22, wherein, The indication information is a number of level jumps in the start-indicator part.

24. The method of any one of claims 14-23, wherein, The information carried in the R2D information includes the first control information and first information, and the first information includes the second control information and / or the data information. The R2D information further carries check information. The method further includes: checking the first control information and the first information according to the check information; or checking the first information according to the check information.

25. A communications device, characterized by including: a sending unit configured to send reader-to-device (R2D) information, the R2D information carrying at least one of the following: first control information, second control information, or data information, the first control information being different from the second control information in terms of content.

26. A communications device, characterized by including: a receiving unit configured to receive reader-to-device (R2D) information, the R2D information carrying at least one of the following: first control information, second control information, or data information, the first control information being different from the second control information in terms of content; a parsing unit configured to parse the R2D information.

27. A communications device, characterized by The communication device includes a processor and a memory, which are connected to each other, wherein the memory is configured to store a computer program, the computer program includes program instructions, and the processor invokes the program instructions to execute the method in any one of claims 1 to 13, or to execute the method in any one of claims 14 to 24.

28. A chip, characterized by The chip comprises a processor and an interface, the processor and the interface are coupled; the interface is used for receiving or outputting signals, and the processor is used for executing code instructions, executing the method in any one of claims 1 to 13, or executing the method in any one of claims 14 to 24.

29. A modular device, comprising: The module device comprises a communication module, a power module, a storage module and a chip module, wherein: The power module is used for providing electric energy for the module device; The storage module is used for storing data and / or instructions; The communication module is used for communicating with external devices; The chip module is used for calling data and / or instructions stored by the storage module, and executing the method in any one of claims 1 to 13 or the method in any one of claims 14 to 24 in combination with the communication module.

30. A computer-readable storage medium, characterized in that, The computer readable storage medium stores a computer program, the computer program comprises program instructions, when the computer executes the program instructions, the method in any one of claims 1 to 13 is realized, or the method in any one of claims 14 to 24 is realized.

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