Information sending method, information receiving method, apparatus reader, and device

Abstract

The present application relates to the technical field of communications, and discloses an information sending method, an information receiving method, an apparatus reader, and a device. The information sending method of the present application comprises: a reader sends first information to a device, wherein the first information comprises at least one of the following: first indication information used for indicating Y device-to-reader (D2R) resources, second indication information used for indicating an information set, third indication information used for indicating the value of Y, and fourth indication information used for indicating the maximum value of Y, the first indication information belonging to the information set, and Y being a positive integer; the first indication information comprises at least one of the following: information used for indicating a D2R frequency domain resource, and information used for indicating a D2R time domain resource; the information used for indicating a D2R frequency domain resource comprises at least one of the following: R, a frequency offset, and frequency domain position information, R comprising or representing a repetition count, a repetition parameter or a repetition factor; the information used for indicating a D2R time domain resource comprises at least one of the following: time domain position information and delay information; and the information set comprises at least one of the following: an information set used for indicating a D2R frequency domain resource and an information set used for indicating a D2R time domain resource.

Description

Information sending and receiving methods, devices, readers and equipment

[0001] Cross-references to related applications

[0002] This application claims priority to Chinese Patent Application No. 202510137932.9, filed on February 7, 2025, the entire contents of which are incorporated herein by reference. Technical Field

[0003] This application belongs to the field of communication technology, specifically relating to an information transmission method, a receiving method, a reader / writer, and a device. Background Technology

[0004] In some related technologies, the reader communicates with one or more devices, such as those devices attempting to access the device-to-reader (D2R) resource by sending D2R transmissions. Therefore, how to configure or instruct D2R resources to improve device transmission performance is a pressing issue that needs to be addressed. Summary of the Invention

[0005] This application provides an information sending method, a receiving method, a reader / writer, and a device that can solve the problem of how to configure or instruct D2R resources to improve device transmission performance.

[0006] Firstly, a method for sending information is provided, including:

[0007] The reader sends first information to the device, the first information including at least one of the following:

[0008] The first indication information is used to indicate Y devices to the D2R resource of the reader / writer; the second indication information is used to indicate the information set; the third indication information is used to indicate the value of Y; and the fourth indication information is used to indicate the maximum value of Y. The first indication information belongs to the information set, and Y is a positive integer.

[0009] The first indication information includes at least one of the following: information for indicating D2R frequency domain resources, and information for indicating D2R time domain resources;

[0010] The information used to indicate D2R frequency domain resources includes at least one of the following: R, frequency offset, and frequency domain location information, wherein R includes or represents the number of repetitions, repetition parameters, or repetition factors;

[0011] The information used to indicate D2R time-domain resources includes at least one of the following: time-domain location information and time delay information;

[0012] The information set includes at least one of the following: an information set for indicating D2R frequency domain resources, and an information set for indicating D2R time domain resources. For example, the information set includes information on one or more D2R frequency domain resources, and / or information on one or more D2R time domain resources.

[0013] Secondly, an information receiving method is provided, including:

[0014] The device acquires the first information;

[0015] The device determines device-to-reader (D2R) resources based on the first information;

[0016] The first information includes at least one of the following:

[0017] The first indication information is used to indicate Y devices to the D2R resource of the reader / writer; the second indication information is used to indicate the information set; the third indication information is used to indicate the value of Y; and the fourth indication information is used to indicate the maximum value of Y. The first indication information belongs to the information set, and Y is a positive integer.

[0018] The first indication information includes at least one of the following: information for indicating D2R frequency domain resources, and information for indicating D2R time domain resources;

[0019] The information used to indicate D2R frequency domain resources includes at least one of the following: R, frequency offset, and frequency domain location information, wherein R includes or represents the number of repetitions, repetition parameters, or repetition factors;

[0020] The information used to indicate D2R time-domain resources includes at least one of the following: time-domain location information and time delay information;

[0021] The information set includes at least one of the following: an information set for indicating D2R frequency domain resources, and an information set for indicating D2R time domain resources.

[0022] Thirdly, an information transmission device is provided, comprising:

[0023] The sending module is configured to send first information to the device, the first information comprising at least one of the following:

[0024] The first indication information is used to indicate Y devices to the D2R resource of the reader / writer; the second indication information is used to indicate the information set; the third indication information is used to indicate the value of Y; and the fourth indication information is used to indicate the maximum value of Y. The first indication information belongs to the information set, and Y is a positive integer.

[0025] The first indication information includes at least one of the following: information for indicating D2R frequency domain resources, and information for indicating D2R time domain resources;

[0026] The information used to indicate D2R frequency domain resources includes at least one of the following: R, frequency offset, and frequency domain location information, wherein R includes or represents the number of repetitions, repetition parameters, or repetition factors;

[0027] The information used to indicate D2R time-domain resources includes at least one of the following: time-domain location information and time delay information;

[0028] The information set includes at least one of the following: an information set for indicating D2R frequency domain resources, and an information set for indicating D2R time domain resources.

[0029] Fourthly, an information receiving device is provided, comprising:

[0030] The processing module is used to obtain the first information;

[0031] The processing module is also used to determine device-to-reader (D2R) resources based on the first information;

[0032] The first information includes at least one of the following:

[0033] The first indication information is used to indicate Y devices to the D2R resource of the reader / writer; the second indication information is used to indicate the information set; the third indication information is used to indicate the value of Y; and the fourth indication information is used to indicate the maximum value of Y. The first indication information belongs to the information set, and Y is a positive integer.

[0034] The first indication information includes at least one of the following: information for indicating D2R frequency domain resources, and information for indicating D2R time domain resources;

[0035] The information used to indicate D2R frequency domain resources includes at least one of the following: R, frequency offset, and frequency domain location information, wherein R includes or represents the number of repetitions, repetition parameters, or repetition factors;

[0036] The information used to indicate D2R time-domain resources includes at least one of the following: time-domain location information and time delay information;

[0037] The information set includes at least one of the following: an information set for indicating D2R frequency domain resources, and an information set for indicating D2R time domain resources.

[0038] Fifthly, an apparatus for transmitting information is provided, the apparatus being configured to perform the steps of the method described in the first aspect.

[0039] Fifthly, an information receiving apparatus is provided, the apparatus being configured to perform the steps of the method described in the second aspect.

[0040] In a seventh aspect, a reader / writer is provided, comprising a processor and a memory, the memory storing a program or instructions executable on the processor, the program or instructions, when executed by the processor, implementing the steps of the method as described in the first aspect.

[0041] Eighthly, a reader / writer is provided, including a processor and a communication interface, wherein the communication interface is used to send first information to devices, the first information including at least one of the following: first indication information for indicating Y devices to the reader / writer's D2R resources, second indication information for indicating an information set, third indication information for indicating the value of Y, and fourth indication information for indicating the maximum value of Y, wherein the first indication information belongs to the information set, and Y is a positive integer; wherein the first indication information includes at least one of the following: information for indicating D2R frequency domain resources and information for indicating D2R time domain resources; the information for indicating D2R frequency domain resources includes at least one of the following: R, frequency offset, and frequency domain location information, wherein R includes or represents the number of repetitions, repetition parameters, or repetition factors; the information for indicating D2R time domain resources includes at least one of the following: time domain location information and delay information; the information set includes at least one of the following: an information set for indicating D2R frequency domain resources and an information set for indicating D2R time domain resources.

[0042] In a ninth aspect, an apparatus is provided, the apparatus including a processor and a memory storing a program or instructions executable on the processor, the program or instructions, when executed by the processor, implementing the steps of the method as described in the second aspect.

[0043] A ninth aspect provides a device including a processor and a communication interface, wherein the processor is configured to process a module for acquiring first information; determining device-to-reader (D2R) resources based on the first information; wherein the first information includes at least one of the following: first indication information for indicating Y device-to-reader (D2R) resources, second indication information for indicating an information set, third indication information for indicating the value of Y, and fourth indication information for indicating the maximum value of Y, wherein the first indication information belongs to the information set, and Y is a positive integer; wherein the first indication information includes at least one of the following: information for indicating D2R frequency domain resources and information for indicating D2R time domain resources; the information for indicating D2R frequency domain resources includes at least one of the following: R, frequency offset, and frequency domain location information, wherein R includes or represents the number of repetitions, repetition parameters, or repetition factors; the information for indicating D2R time domain resources includes at least one of the following: time domain location information and delay information; the information set includes at least one of the following: an information set for indicating D2R frequency domain resources and an information set for indicating D2R time domain resources.

[0044] Eleventhly, a readable storage medium is provided, on which a program or instructions are stored, which, when executed by a processor, implement the steps of the method described in the first aspect, or implement the steps of the method described in the second aspect.

[0045] In a twelfth aspect, a wireless communication system is provided, comprising: a reader / writer and a device, wherein the reader / writer is configured to perform the steps of the method described in the first aspect, and the device is configured to perform the steps of the method described in the second aspect.

[0046] In a thirteenth aspect, a chip is provided, the chip including a processor and a communication interface coupled to the processor, the processor being configured to run a program or instructions to implement the steps of the method described in the first aspect, or to implement the steps of the method described in the second aspect.

[0047] In a fourteenth aspect, a computer program / program product is provided, which is stored in a storage medium and is executed by at least one processor to implement the steps of the method as described in the first aspect, or the computer program / program product is executed by at least one processor to implement the steps of the method as described in the second aspect.

[0048] In this embodiment, the reader sends first information to the device. The first information includes at least one of the following: first indication information for indicating Y devices to the reader's D2R resources, second indication information for indicating an information set, third indication information for indicating the value of Y, and fourth indication information for indicating the maximum value of Y. The first indication information belongs to the information set, and Y is a positive integer. The first indication information includes at least one of the following: information for indicating D2R frequency domain resources and information for indicating D2R time domain resources. The information for indicating D2R frequency domain resources includes at least one of the following: R, frequency offset, and frequency domain location information. R includes or represents the number of repetitions, repetition parameters, or repetition factors. The information for indicating D2R time domain resources includes at least one of the following: time domain location information and delay information. The information set includes at least one of the following: an information set for indicating D2R frequency domain resources and an information set for indicating D2R time domain resources. In this way, since the first information includes at least one of the first indication information, the second indication information, the third indication information and the fourth indication information, the device and the reader can understand the D2R resources in a consistent manner, thereby improving the device's transmission performance, such as improving the device's access performance. Attached Figure Description

[0049] Figure 1 is a block diagram of a wireless communication system applicable to an embodiment of this application;

[0050] Figure 2 is a schematic diagram of the interaction between a reader and a tag provided in an embodiment of this application;

[0051] Figure 3 is a flowchart of an information sending method provided in an embodiment of this application;

[0052] Figure 4 is a schematic diagram of a frequency domain resource provided in an embodiment of this application;

[0053] Figures 5 to 9 are schematic diagrams illustrating the information content provided in the embodiments of this application;

[0054] Figure 10 is a flowchart of an information receiving method provided in an embodiment of this application;

[0055] Figures 11 to 40 are schematic diagrams illustrating the information content provided in the embodiments of this application;

[0056] Figure 41 is a structural diagram of an information transmission device provided in an embodiment of this application;

[0057] Figure 42 is a structural diagram of an information receiving device provided in an embodiment of this application;

[0058] Figure 43 is a structural diagram of a communication device provided in an embodiment of this application;

[0059] Figure 44 is a structural diagram of a terminal provided in an embodiment of this application;

[0060] Figure 45 is a structural diagram of a network-side device provided in an embodiment of this application. Detailed Implementation

[0061] The technical solutions of the embodiments of this application will be clearly described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application are within the scope of protection of this application.

[0062] The terms "first," "second," etc., used in this application are used to distinguish similar objects and not to describe a specific order or sequence. It should be understood that such terms can be used interchangeably where appropriate so that embodiments of this application can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first" and "second" are generally of the same class, not limited in number; for example, the first object can be one or more. Furthermore, "or" in this application indicates at least one of the connected objects. For example, the scope of protection for "A or B" covers at least three scenarios: Scenario 1: including A but not B; Scenario 2: including B but not A; Scenario 3: including both A and B. In addition, the terms "A and / or B," "at least one of A and B," and "at least one of A or B" also cover at least the above three scenarios. The character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0063] The term "instruction" in this application can be either a direct instruction (or explicit instruction) or an indirect instruction (or implicit instruction). A direct instruction can be understood as the sender explicitly informing the receiver of specific information, the required operation, or the requested result in the instruction sent. An indirect instruction can be understood as the receiver determining the corresponding information based on the instruction sent by the sender, or making a judgment and determining the required operation or requested result based on the judgment result.

[0064] It is worth noting that the technologies described in this application are not limited to Long Term Evolution (LTE) / LTE-Advanced (LTE-A) systems, but can also be used in other wireless communication systems, such as Code Division Multiple Access (CDMA), Time Division Multiple Access (TDMA), Frequency Division Multiple Access (FDMA), Orthogonal Frequency Division Multiple Access (OFDMA), Single-carrier Frequency-Division Multiple Access (SC-FDMA), or other systems. The terms "system" and "network" in this application are often used interchangeably, and the described technologies can be used with the systems and radio technologies mentioned above, as well as with other systems and radio technologies. The following description describes New Radio (NR) systems for illustrative purposes, and the term NR is used in most of the following description; however, these technologies can also be applied to systems other than NR systems, such as 6th generation (6G) radio systems. th Generation 6G communication system.

[0065] Figure 1 shows a block diagram of a wireless communication system applicable to an embodiment of this application. The wireless communication system includes a terminal 11 and a network-side device 12. The terminal 11 can also be referred to as User Equipment (UE), and can be a mobile phone, tablet computer, laptop computer, notebook computer, personal digital assistant (PDA), handheld computer, netbook, ultra-mobile personal computer (UMPC), mobile internet device (MID), augmented reality (AR), virtual reality (VR) device, robot, wearable device, flight vehicle, vehicle user equipment (VUE), shipboard equipment, pedestrian user equipment (PUE), smart home (home devices with wireless communication capabilities, such as refrigerators, televisions, washing machines, or furniture), game console, personal computer (PC), ATM, or self-service machine, etc. Wearable devices include: smartwatches, smart bracelets, smart headphones, smart glasses, smart jewelry (smart bracelets, smart chains, smart rings, smart necklaces, smart anklets, smart anklets, etc.), smart wristbands, smart clothing, etc. Among these, in-vehicle devices can also be referred to as in-vehicle terminals, in-vehicle controllers, in-vehicle modules, in-vehicle components, in-vehicle chips, or in-vehicle units, etc. It should be noted that the specific type of terminal 11 is not limited in this application embodiment. Network-side equipment 12 may include access network equipment or core network equipment, wherein access network equipment may also be referred to as Radio Access Network (RAN) equipment, radio access network function, or radio access network unit. Access network equipment may include base stations, Wireless Local Area Network (WLAN) access points (APs), or Wireless Fidelity (WiFi) nodes, etc.Among them, base stations can be referred to as Node B (NB), Evolved Node B (eNB), Next Generation Node B (gNB), New Radio Node B (NR Node B), Access Point, Relay Base Station (RBS), Serving Base Station (SBS), Base Transceiver Station (BTS), Radio Base Station, Radio Transceiver, Basic Service Set (BSS), Extended Service Set (ESS), Home Node B (HNB), Home Evolved Node B, Transmit / Receive Point (TRP), Non-Terrestrial Network (NTN) equipment (such as satellite or high altitude platform stations). The term "base station" can be any suitable term in the field, such as "station" or any other appropriate term in the relevant field, as long as the same technical effect is achieved. The term "base station" is not limited to specific technical terms. It should be noted that the embodiments of this application only use the base station in the NR system as an example for introduction, and do not limit the specific type of base station.

[0066] Core network equipment, also known as core network nodes, core network functions, or core network elements, includes, but is not limited to, at least one of the following: Mobility Management Entity (MME), Access and Mobility Management Function (AMF), Session Management Function (SMF), User Plane Function (UPF), Policy Control Function (PCF), Policy and Charging Rules Function (PCRF), Edge Application Server Discovery Function (EASDF), Unified Data Management (UDM), Unified Data Repository (UDR), Home Subscriber Server (HSS), Centralized network configuration (CNC), Network Repository Function (NRF), Network Exposure Function (NEF), Local NEF (L-NEF), and Binding Support. Functions include BSF, Application Function (AF), Location Management Function (LMF), Gateway Mobile Location Centre (GMLC), Network Data Analytics Function (NWDAF), and Non-Terrestrial Network (NTN) equipment (such as satellite or high altitude platform station).It should be noted that the embodiments of this application only use the core network equipment in the NR system as an example for introduction, and do not limit the specific type of core network equipment. If the name of the core network equipment mentioned in the embodiments of this application changes in subsequent protocol versions (e.g., 6G), it is also within the scope of protection of this application.

[0067] Optionally, the core network equipment can be implemented by one or more functional modules in a single device, or by multiple devices working together; this application does not specifically limit this. It is understood that the aforementioned functional modules can be network elements in hardware devices, software functional modules running on dedicated hardware, or virtualized functional modules instantiated on a platform (e.g., a cloud platform).

[0068] In some embodiments, the device can be an Internet of Things (IoT) device, such as an Ambient IoT (A-IoT) device, and the A-IoT device can be characterized by its energy storage capacity and its ability to generate and transmit radio frequency signals. A-IoT devices include the following types:

[0069] Device A: No energy storage, no independent signal generation / amplification, i.e., backscatter transmission.

[0070] Device B: It has energy storage but no independent signal generation, i.e., backscatter transmission. The use of stored energy can include amplification of the reflected signal.

[0071] Device C: It has energy storage and independent signal generation, i.e., an active radio frequency component for transmission.

[0072] Devices with different energy storage capacities also affect their transmission quality. Generally, devices with higher energy storage capacity also mean higher receiving sensitivity or higher transmitting power, and the reliability of the receiving or transmitting link can be better guaranteed.

[0073] The main data / service types of A-IoT include:

[0074] Device-originated (DO);

[0075] Device-terminated (DT)

[0076] DO and DT data indicate that the data stream originates from or is transmitted to an A-IoT device (similar to a Radio Frequency Identification (RFID) tag). For data streams originating from A-IoT devices, i.e., DO data, further classification is as follows:

[0077] Device-originated access (DOA) means that the device autonomously initiates data transmission. For example, it connects a large number of various sensors, which collect and proactively report information about the environment, the device, and the organism when necessary.

[0078] Device-originated–device-terminated triggered (DO-DTT) refers to a data transfer service initiated by a device after data termination. Examples include asset identification, status reporting, and tracking, all of which involve downlink-triggered reporting. The reader collects data from the tag by triggering an inventory process. Since the data is generated / initiated within the A-IoT device, this service should be considered as a DO service initiated by the tag, triggered by a command sent by the reader.

[0079] In some embodiments, the general A-IoT process is shown in Figure 2, including the following steps:

[0080] Step A, A-IoT paging, is when the reader sends an A-IoT paging message to the device;

[0081] Step B, Device-to-Reader (D2R) data transmission, includes D2R data transmission and may also include an A-IoT random access procedure;

[0082] Step C, data transmission, can include R2D data transmission and D2R data transmission.

[0083] The inventory-only process includes: Step A + Step B

[0084] The inventory and command process includes: Step A + Step B + Step C

[0085] The information sending method, receiving method, device reader and device provided in this application will be described in detail below with reference to the accompanying drawings and through some embodiments and application scenarios.

[0086] Please refer to Figure 3, which is a flowchart of an information sending method provided in an embodiment of this application. As shown in Figure 3, it includes the following steps:

[0087] Step 301: The reader sends first information to the device, the first information including at least one of the following:

[0088] The system includes a first indication information for indicating Y D2R resources, a second indication information for indicating an information set, a third indication information for indicating the value of Y, and a fourth indication information for indicating the maximum value of Y. The first indication information belongs to the information set, and Y is a positive integer.

[0089] The first indication information includes at least one of the following: information for indicating D2R frequency domain resources, and information for indicating D2R time domain resources;

[0090] The information used to indicate D2R frequency domain resources includes at least one of the following: R, frequency offset, and frequency domain location information, wherein R includes or represents the number of repetitions, repetition parameters, or repetition factors;

[0091] The information used to indicate D2R time-domain resources includes at least one of the following: time-domain location information and time delay information;

[0092] The information set includes at least one of the following: an information set for indicating D2R frequency domain resources, and an information set for indicating D2R time domain resources.

[0093] The aforementioned reader / writer can be a terminal or a network-side device. When the reader / writer is a terminal (such as an NR terminal), the first information can be provided by the network-side device, or the network-side device can provide some auxiliary information (such as information that can be used for time-domain resources and / or frequency-domain resources of the A-IoT system). The terminal determines the first information based on the auxiliary information, or the terminal determines the first information itself.

[0094] The aforementioned first information may be control information, or the aforementioned first information may be information contained in control information.

[0095] In some implementations, the first information mentioned above may be message 2, or the first information may be information carried in message 2.

[0096] The first information may include all or part of the first, second, third, and fourth indication information. In the case of inclusion, the indication information not included may be implicitly indicated by the included indication information. For specific indication methods, please refer to the indication methods described in the following embodiments.

[0097] The aforementioned first indication information may include Y pieces of information for indicating D2R frequency domain resources or Y pieces of information for indicating D2R time domain resources, such as Y R, frequency offset, and frequency domain location information, or Y time domain location information and delay information.

[0098] Alternatively, one piece of information indicating D2R frequency domain resources is used to indicate Y D2R frequency domain resources, and another piece of information indicating D2R time domain resources is used to indicate Y D2R time domain resources.

[0099] The frequency domain location information mentioned above can be the start position of the frequency domain, the end position of the frequency domain, the length of the frequency domain, etc.

[0100] The frequency offset mentioned above can be the frequency offset of the D2R resource relative to the carrier frequency, or the frequency offset mentioned above can be the small frequency shift.

[0101] The frequency domain location of the D2R resource can be determined by the frequency offset mentioned above.

[0102] The R mentioned above includes or represents the number of repetitions, the repetition parameter, or the repetition factor. For example, R can represent a repetition count of 2. R Alternatively, the number of repetitions is R times.

[0103] Regarding the aforementioned R, the information used to indicate D2R frequency domain resources can be understood as R value information, the information set used to indicate D2R frequency domain resources can be understood as the value range information of R, and the value of Y can be understood as the number of R value information.

[0104] In some implementations, the frequency offset described above can be calculated using the aforementioned R, for example:

[0105] FS x =R / T b

[0106] Among them, FS x Indicating the aforementioned frequency offset, T b This indicates the duration of the D2R transmission, such as two chip lengths. Taking R as 1 as an example, the above FS... x = 1 / (2×chip length).

[0107] Taking Figure 4 as an example, it includes 3 D2R resources, of which one D2R resource F C The other two are D2R resources determined based on FS1 and FS2, respectively.

[0108] The aforementioned time-domain location information can be the start position of the time domain, the end position of the time domain, the length of the time domain, etc.

[0109] The aforementioned latency information represents the latency (also known as time domain offset) of the D2R resource relative to the reference time domain resource. Based on this latency, the D2R resource can be determined; that is, different latency values ​​can identify different D2R resources. For example, it could be the latency T between the R2D transmission and the corresponding D2R resource or transmission.D2R Alternatively, it could be the maximum delay T between the R2D transmission and the corresponding D2R resource or transmission. D2R_max Or minimum delay T D2R_min。

[0110] The aforementioned information set for indicating D2R frequency domain resources includes multiple pieces of information for indicating D2R frequency domain resources, such as multiple R, frequency offset, and frequency domain location information; the aforementioned information set for indicating D2R time domain resources includes multiple pieces of information for indicating D2R time domain resources, such as multiple time domain location information and time delay information.

[0111] The aforementioned first indication information belonging to the information set can be understood as the information included in the aforementioned first indication information for indicating D2R frequency domain resources belonging to the information set for indicating D2R frequency domain resources. For example, Y pieces of information for indicating D2R frequency domain resources are Y pieces of information in the information set for indicating D2R frequency domain resources.

[0112] The above-mentioned first indication information belongs to the information set, which can be understood as the information included in the first indication information for indicating D2R time domain resources belonging to the information set for indicating D2R time domain resources. For example, Y pieces of information for indicating D2R time domain resources are Y pieces of information in the information set for indicating D2R time domain resources.

[0113] The maximum value of Y mentioned above can be any maximum value of Y that is allowed by the first information, defined by the protocol, or supported by the device.

[0114] The aforementioned Y pieces of information used to indicate D2R frequency domain resources can be Y different pieces of information when Y is greater than 1, such as Y different values ​​of R, or Y different frequency offsets or frequency domain location information. In some embodiments, when Y is greater than 1, it is also permissible for some of the information used to indicate D2R frequency domain resources to be the same, and this is not limited.

[0115] In this embodiment of the application, D2R resources are used to transmit D2R transmissions.

[0116] In addition, in the embodiments of this application, transmission includes sending or receiving.

[0117] In this embodiment of the application, the reader sends first information to the device. Since the first information includes at least one of the first indication information, second indication information, third indication information and fourth indication information, the device and the reader can have a consistent understanding of D2R resources, thereby improving the device's transmission performance, such as improving the device's access performance.

[0118] As an optional implementation, R is the codeword repetition count or the square wave period.

[0119] The R mentioned above can be the number of square wave cycles.

[0120] In this implementation, the number of repetitions, repetition parameters, or repetition factors can be represented by the number of codeword repetitions or the square wave period.

[0121] As an optional implementation, the first information satisfies at least one of the following:

[0122] When the D2R resource is used to transmit message 1 or message 3, or when the D2R resource is a D2R resource corresponding to the identification information of the device, the first information includes the third indication information.

[0123] Frequency Division Multiplexing (FDM) resources or Time Division Multiplexing (TDM) resources

[0124] In the case of D2R resources for multiple devices, the first information includes the first indication information or the third indication information, wherein the Y D2R resources indicated by the first indication information are D2R resources in the FDM resources or the TDM resources, or the D2R resources corresponding to the value of Y indicated by the third indication information are D2R resources in the FDM resources or the TDM resources.

[0125] In the case that the D2R resource is a D2R resource corresponding to multicast R2D transmission, or the D2R resource corresponds to multiple devices that have been successfully inventoried or successfully accessed, or the D2R resource corresponds to multiple specific devices, the first information includes the third indication information.

[0126] If the D2R resource is a D2R resource corresponding to unicast transmission, or the D2R resource corresponds to a device that has been successfully inventoried or successfully accessed, or the D2R resource corresponds to a specific device, the first information does not include the third indication information, or the value of Y is 1.

[0127] The aforementioned transmission of message 1 or message 3 can be for sending or receiving message 1 or message 3, where message 1 and message 3 can refer to message 1 and message 3 in the random access process.

[0128] The identification information of the aforementioned devices can be a generated random ID, a random number (RN)16, or the device's own Electronic Product Code (EPC) identifier, etc.

[0129] The above Y D2R resources being either FDM resources or TDM resources can be understood as the above Y D2R resources being either FDM or TDM.

[0130] The D2R resource corresponding to the value of Y indicated by the third indication information mentioned above refers to the Y D2R resources that can be implicitly indicated by the value of Y indicated by the third indication information. For example, the values ​​of Y R can be determined based on the value of Y, and then the Y D2R resources can be determined based on the values ​​of Y R.

[0131] In some implementations, when the D2R resource corresponds to the FDM resource or TDM resource corresponding to the D2R resource of multiple devices that have been successfully inventoried or successfully accessed, the first information includes the aforementioned third indication information.

[0132] The aforementioned D2R resource corresponds to the D2R resource of the multicast R2D transmission, or the D2R resource corresponds to multiple devices that have been successfully inventoried or successfully accessed, or the D2R resource corresponds to multiple specific devices. It may be that a reader or writer sends an R2D transmission, which is multicast or for a certain multicast session. For example, for multiple devices, the first information carries the third indication information. In one implementation, the multicast R2D transmission will carry the first information.

[0133] The aforementioned corresponding unicast transmission can be interpreted as corresponding unicast R2D transmission, or it can be interpreted as D2R transmission itself being used for unicast transmission.

[0134] The first information does not contain or indicate the third indication information, which can save signaling overhead. The above or Y value of 1 can be understood as the default value of 1, that is, the first information does not contain the above third indication information, so as to save signaling overhead.

[0135] It should be noted that in some implementations, the value of Y can also be determined by protocol or network-side device configuration.

[0136] As an optional implementation, the value of Y is equal to the number of messages 1 corresponding to message 2 sent by the reader; or,

[0137] The value of Y is equal to the number of D2R resources corresponding to the R2D transmission sent by the reader; or,

[0138] The value of Y is equal to the number of devices corresponding to the R2D transmission sent by the reader; or,

[0139] The value of Y is equal to the number of message 1s received by the reader; or,

[0140] The value of Y is equal to the number of responses sent by the reader, wherein the response is a response to message 1 of random access, or the response is a response to a D2R transmission received by the reader; or,

[0141] The value of Y is equal to the number of random IDs or RN16 numbers carried in message 2 sent by the reader; or,

[0142] The value of Y includes at least one of the following: the number of D2R resources or locations in FDM, the number of D2R resources or locations in TDM; or

[0143] The value of Y is the number agreed upon in the protocol, or the value of Y is indicated by the reader during the inventory process (e.g., indicated or configured by the first or a certain paging or query or QueryX or inventory message or select command or triggering msg1 R2D transmission in a round of inventory); and the reader indicates to the device at least one of the following: whether the information indicating D2R frequency domain resources or the information indicating D2R time domain resources is valid or used, and whether the information indicating D2R frequency domain resources or the information indicating D2R time domain resources has an actual corresponding D2R resource.

[0144] In this case, the value of Y is equal to the number of messages 1 corresponding to message 2 sent by the reader / writer, thus enabling the allocation of corresponding D2R resources to each device.

[0145] The value of Y is equal to the number of devices corresponding to the R2D transmission sent by the reader / writer. For example, if the reader / writer sends a multicast R2D transmission, such as this R2D transmission corresponding to 4 devices, then the number of value information is 4, so that each R2D transmission indicates the corresponding D2R resource.

[0146] The value of Y includes the number of D2R resources or locations in the FDM, which can be understood as the value of Y being equal to the number of D2R resources or locations in the FDM.

[0147] The value of Y includes the number of D2R resources or locations in TDM, which can be understood as the value of Y being equal to the number of D2R resources or locations in TDM.

[0148] The reader / writer instructs the device whether the information indicating D2R frequency domain resources or D2R time domain resources is valid or used, or whether the information indicating D2R frequency domain resources or D2R time domain resources has an actual corresponding D2R resource. At least one of the following can be indicated by the reader / writer to the device:

[0149] Whether each piece of information used to indicate D2R frequency domain resources or information used to indicate D2R time domain resources exists in the first information;

[0150] Whether each piece of information used to indicate D2R frequency domain resources or D2R time domain resources is valid or used;

[0151] Does each piece of information used to indicate D2R frequency domain resources or D2R time domain resources actually correspond to a D2R resource?

[0152] Alternatively, the reader may instruct the device to indicate at least one of the following:

[0153] Whether at least one piece of information indicating D2R frequency domain resources or information indicating D2R time domain resources is present in the first information;

[0154] Whether at least one piece of information indicating D2R frequency domain resources or D2R time domain resources is valid or used;

[0155] At least one piece of information indicating D2R frequency domain resources or information indicating D2R time domain resources has an actual corresponding D2R resource.

[0156] The above implementation method makes the value of Y more reliable.

[0157] As an optional implementation, the first information also indicates at least one of the following:

[0158] Is this the final response?

[0159] Is there a response?

[0160] Is this the last D2R scheduling information?

[0161] Whether it is the last piece of information used to indicate D2R frequency domain resources or the last piece of information used to indicate D2R time domain resources;

[0162] Does D2R have scheduling information?

[0163] Does information exist to indicate D2R frequency domain resources or D2R time domain resources?

[0164] Whether the above refers to the last response can mean whether it is the last response.

[0165] Whether the above is the last D2R scheduling information can refer to whether it is the last D2R scheduling information.

[0166] Whether the above information is the last information used to indicate D2R frequency domain resources or D2R time domain resources can refer to whether it is the last information used to indicate D2R frequency domain resources or D2R time domain resources.

[0167] Among these, the above can be either an explicit or implicit indication. For example, it can indicate 'yes' or provide no information, where providing no information can be interpreted as final; or it can indicate 'no' or provide no information, where providing no information can be interpreted as not final; or it can be a direct indication of 'yes' or 'no'.

[0168] As an optional implementation, the value of Y is indicated by at least one of the following:

[0169] Is this the final response?

[0170] Is there a response?

[0171] Is this the last D2R scheduling information?

[0172] Whether it is the last piece of information used to indicate D2R frequency domain resources or the last piece of information used to indicate D2R time domain resources;

[0173] Does D2R have scheduling information?

[0174] Does information exist to indicate D2R frequency domain resources or D2R time domain resources?

[0175] Whether the above refers to the last response can mean whether it is the final response. This allows us to determine the number of responses and thus the value of Y. For example, we can determine that the value of Y is the number of responses.

[0176] In this embodiment of the application, the response may also be referred to as a reply.

[0177] The existence of a response determines the number of responses, which in turn determines the value of Y. For example, there are four candidate resources for msg1 by default, but msg2 will indicate which of these four msg1 resources it carries a response to, thus determining the value of Y.

[0178] Whether the above is the last D2R scheduling information can refer to whether it is the last D2R scheduling information. This can determine the number of D2R scheduling information and thus determine the value of Y.

[0179] Whether the above information is the last one used to indicate D2R frequency domain resources or D2R time domain resources can refer to whether it is the last one used to indicate D2R frequency domain resources or D2R time domain resources. This can determine the number of information used to indicate D2R frequency domain resources or D2R time domain resources, and thus determine the value of Y.

[0180] The existence of D2R scheduling information can determine the amount of D2R scheduling information, and thus determine the value of Y.

[0181] The value of Y can be determined by whether information indicating D2R frequency domain resources or D2R time domain resources exists.

[0182] As an optional implementation, the information set indicated by the second indication information includes at least a portion of the information set agreed upon in the protocol. For example, the protocol agrees on an information set that includes information on one or more D2R frequency domain resources and / or information on one or more D2R time domain resources.

[0183] In some implementations, the protocol may specify all or part of the information set, such as specifying an information set for indicating D2R frequency domain resources or an information set for indicating D2R time domain resources.

[0184] In this embodiment, since the information set indicated by the second indication information includes at least a portion of the information set agreed upon by the protocol, the overhead of the first information can be saved.

[0185] In some implementations, the set of information indicated by the second indication information described above may be indicated or configured by the first paging, query, or queryX, inventory message, select command, or R2D transmission that triggers msg1 in a round of inventory counting. For example, the reader / writer indicates the existence, validity, or use of one or more or each piece of information indicating D2R frequency domain resources or D2R time domain resources, as indicated in the first information, or indicated or configured by the first paging, query, or queryX, inventory message, select command, or R2D transmission that triggers msg1 in a round of inventory counting.

[0186] As an optional implementation, when Y is greater than 1:

[0187] The Y D2R resources are D2R resources that can be used simultaneously; or

[0188] The Y D2R resources are coexistent; or

[0189] The D2R resources corresponding to the Y D2R resources do not overlap; or

[0190] The interval between the Y D2R resources is greater than or equal to a preset value.

[0191] The aforementioned Y D2R resources are D2R resources that can be used simultaneously. They can be information combinations in the above information set that indicate that D2R resources cannot be used simultaneously. For example, specific combinations of R values ​​cannot be indicated, configured, or used simultaneously. For example, if the repetition count is R, R value = 1 and R value = 2 cannot be indicated, configured, or used simultaneously, and R value = i and R value = (2n+1)*i cannot be indicated, configured, or used simultaneously, where i is a positive integer and n is a natural number.

[0192] In this way, Y D2R resources are D2R resources that can be used simultaneously, thereby avoiding the need to specify D2R resources that cannot be used simultaneously, thus improving D2R transmission performance.

[0193] The aforementioned Y D2R resources are coexisting, meaning that the side lobes or harmonics of the corresponding D2R frequencies do not overlap. Because they are coexisting, this avoids the need to specify D2R resources that cannot be used simultaneously, thereby improving D2R transmission performance.

[0194] The D2R resources corresponding to the Y D2R resources do not overlap, which can also avoid indicating D2R resources that cannot be used at the same time, thereby improving D2R transmission performance.

[0195] The interval between the Y D2R resources being greater than or equal to a preset value can be the interval between the side lobes or harmonics of the corresponding D2R frequency being greater than or equal to a preset value. Since the interval between the Y D2R resources is greater than or equal to the preset value, this can also avoid indicating D2R resources that cannot be used simultaneously, thereby improving D2R transmission performance.

[0196] The aforementioned D2R resources can be D2R time-domain resources or D2R frequency-domain resources.

[0197] As an optional implementation, the first indication information satisfies at least one of the following:

[0198] The first instruction information indicates the Y D2R resources in a first preset order;

[0199] The first value is the number of bits or chips corresponding to information indicating D2R frequency domain resources or information indicating D2R time domain resources; the second value is the number of chips corresponding to information indicating D2R frequency domain resources or information indicating D2R time domain resources. The first value is equal to one of the following: log2(My), log2(Ymax), log2(Y), and the second value is equal to one of the following: log2(My)*2*M, log2(Ymax)*2*M, log2(Y)*2*M, log2(My)*M, log2(Ymax)*M, log2(Y)*M.

[0200] The total number of bits or chips in the first indication information is a third value, or the total number of chips in the first indication information is a fourth value, wherein the third value is equal to one of the following: Y*log2(My), Y*log2(Ymax), Y*log2(Y), and the fourth value is equal to one of the following: Y*log2(My)*2*M, Y*log2(Ymax)*2*M, Y*log2(Y)*2*M, Y*log2(My)*M, Y*log2(Ymax)*M, Y*log2(Y)*M;

[0201] Wherein, My represents the number of values ​​corresponding to or contained in the D2R resource range information, Ymax is the maximum value of Y, and M is the number of chips corresponding to one bit of the first indication information or the OOK modulation order of the on / off key control (for example, when OOK modulation corresponds to the modulation order M=2 and Manchester encoding is used, it means that 2*M=4 chips are needed to represent the number of information bits. If linear encoding is not used and only OOK modulation is used, then one information bit corresponds to M chips).

[0202] In this embodiment of the application, if binary values, such as 0 or 1, are used when describing values, indices, identifiers, or numbers, they can be replaced with low or high levels. For example, 00 can be represented by two low levels, 01 by one low level and one high level, 10 by one high level and one low level, and 11 by two high levels. The levels can be continuous. The method for replacing strings of 0s and 1s with levels of more bits follows the same principle. High and low levels can be replaced by "on" and "off" respectively. Furthermore, "chip" can be understood as a level, such as high level or low level.

[0203] The first indication information mentioned above indicates the order of the Y D2R resources through a first preset order. This order can be agreed upon by the protocol, configured by the network side device, or determined by the reader itself. For example, the first preset order can be sorted in ascending or descending order to indicate the value of the information of the D2R frequency domain or time domain resources, or it can be used to indicate the information of the D2R frequency domain or time domain resources from the earliest to the latest or from the highest bit to the lowest bit.

[0204] It should be noted that for the above logarithmic calculations, if the result of log is not an integer, it can be rounded up. For example, in log2(My), log2(Ymax), log2(Y), log2(My)*2*M, log2(Ymax)*2*M, log2(Y)*2*M, and log2(My)*M, log2(Ymax)*M, log2(Y)*M, if the result of log is not an integer, it can be rounded up. For example, the second value is equal to log2(My), log2(Ymax), or log2(Y) rounded up and then multiplied by 2M or M; the third value is equal to log2(My), log2(Ymax), or log2(Y) rounded up and then multiplied by Y; the fourth value is equal to log2(My), log2(Ymax), or log2(Y) rounded up and then multiplied by Y and 2M, or multiplied by Y and M.

[0205] In the above embodiments, multiple bit counts or chip counts corresponding to the first indication information can be supported to improve the flexibility of the first indication information.

[0206] As an optional implementation, when the first information includes the first indication information and also includes at least one of the second indication information and the third indication information, the order of the second indication information and the third indication information with the first indication information in the first information is a second preset order.

[0207] The aforementioned second preset order can be a protocol-agreed order, for example: the third indication information precedes the second indication information and / or precedes the first indication information; or, for example, the third indication information appears or is placed after the first indication information, or appears or is placed after the second indication information, or appears or is placed before the first indication information. The order of the first, second, and third indication information is not specified. Taking the value information of R for the D2R frequency domain resources as an example, see Figures 5 and 6.

[0208] In Figures 5 and 6 above, Ry represents the range of values ​​for R.

[0209] This second preset order allows the device to better read the content contained or indicated by the first information.

[0210] As an optional implementation, the reader sends the first information to the device, including:

[0211] The reader sends N first messages to the device, wherein one of the first messages contains the first indication information, and another of the first messages contains at least one of the following: the second indication information, the third indication information, and the fourth indication information, where N is an integer greater than 1.

[0212] Among them, the above N first information can be sent through one R2D transmission or multiple R2D transmissions.

[0213] In this embodiment, the first indication information, the second indication information, the third indication information, and the fourth indication information can be included through N first information, which can save the cost of each first information.

[0214] As an optional implementation, the first information indicates at least two of the first indication information, the second indication information, and the third indication information in a joint indication manner.

[0215] Wherein, the above-mentioned indication of at least two of the first indication information, the second indication information, and the third indication information by means of joint indication can be indicated by the same or the same set of information, wherein the information here can be one of the above-mentioned first indication information, the second indication information, and the third indication information, or the above-mentioned information can be index or identification information, etc.

[0216] For example: at least two of the first indication information, the second indication information, and the third indication information are indicated by the same index or identifier; or...

[0217] The first information includes second indication information, and the set of information indicated by the second indication information corresponds to the first indication information or the third indication information.

[0218] The first information includes the third indication information, and the value of Y indicated by the third indication information corresponds to the first indication information or the second indication information;

[0219] The first information includes the first indication information, and the first indication information corresponds to the second indication information or the third indication information.

[0220] In this embodiment, since at least two of the first instruction information, the second instruction information, and the third instruction information are indicated by a joint instruction, the overhead of the first information can be saved.

[0221] As an optional implementation, the first indication information indicates Y D2R resources via a bitmap, bit string, or chip string.

[0222] The above-mentioned indication of the Y D2R resources by bitmap, bit string or chip string can be understood as the first indication information being bitmap, bit string or chip string.

[0223] In some implementations, the number of bits contained in the bitmap or the bit string is equal to Y, Ymax, or My, or the number of chips contained in the chip string is equal to Y or My, where My represents the number of information items corresponding to the information set, and Ymax is the maximum value of Y; and / or

[0224] One bit in the bitmap or the bit string corresponds to or indicates at least one piece of information in the information set used to indicate D2R frequency domain resources or D2R time domain resources; or, one chip in the chip string corresponds to or indicates at least one piece of information in the information set used to indicate D2R frequency domain resources or D2R time domain resources.

[0225] The information My mentioned above can be the number of information items in the information set that indicate D2R frequency domain resources, or the number of information items in the information set that indicate D2R time domain resources.

[0226] The number of the aforementioned information items can be the number of information items used to indicate D2R time-domain resources and / or the number of information items used to indicate D2R frequency-domain resources.

[0227] The aforementioned set of bit-corresponding or indicating information, specifically at least one piece of information indicating D2R frequency domain resources or D2R time domain resources, refers to one or more pieces of information indicating D2R frequency domain resources or D2R time domain resources within the set of bit-corresponding or indicating information. For example, a bit corresponding to R = {4, 8} indicates two possible values ​​of R, i.e., two pieces of information indicating D2R frequency domain resources. Similarly, a chip-corresponding or indicating information set includes one or more pieces of information indicating D2R frequency domain resources or D2R time domain resources.

[0228] It should be noted that in the embodiments of this application, 1, 2, 3... can be replaced by binary 000, 001, 010... etc., or can be replaced by binary 001, 010, 011... etc., such as 4 above can be represented by binary 011 or 100.

[0229] This saves the overhead of the first information by indicating the Y D2R resources through bitmaps, bit strings, or chip strings.

[0230] As an optional implementation, the second indication information indicates a set of information via a bitmap, bit string, or chip string;

[0231] Wherein, a bit in the bitmap or the bit string indicates at least one piece of information in the information set for indicating D2R frequency domain resources or for indicating D2R time domain resources; or, a chip in the chip string indicates at least one piece of information in the information set for indicating D2R frequency domain resources or for indicating D2R time domain resources.

[0232] The aforementioned set of bit-corresponding or indicating information, specifically at least one piece of information indicating D2R frequency domain resources or D2R time domain resources, refers to one or more pieces of information indicating D2R frequency domain resources or D2R time domain resources within that set. For example, a bit corresponding to R = {4, 8} indicates two possible values ​​of R, i.e., two pieces of information indicating D2R frequency domain resources. Similarly, a chip-corresponding or indicating information set includes one or more pieces of information indicating D2R frequency domain resources or D2R time domain resources.

[0233] In this embodiment, the second indication information is indicated by a bitmap, bit string, or chip string, which saves the overhead of the first information.

[0234] As an optional implementation, the information set indicated by the second indication information includes a first information set, the first information set including information indicating D2R resources that do not satisfy the first relationship, and the Y D2R resources indicated by the first indication information are D2R resources that satisfy the first relationship;

[0235] The first relationship includes:

[0236] Multiple D2R resources are D2R resources that can be used simultaneously; or

[0237] Multiple D2R resources can coexist; or

[0238] Multiple D2R resources do not overlap; or

[0239] The interval between multiple D2R resources is greater than or equal to the preset value.

[0240] The information indicating that the D2R resource does not satisfy the first relationship can be that the D2R frequency domain resource indicated by at least two pieces of information used to indicate the D2R frequency domain resource does not satisfy the first relationship. For example, when the value of R is 1 and 2, the D2R frequency domain resource indicated by these two Rs does not satisfy the first relationship. Alternatively, the information indicating that the D2R resource does not satisfy the first relationship can be that the D2R time domain resource indicated by at least two pieces of information used to indicate the D2R time domain resource does not satisfy the first relationship. For example, the D2R time domain resource indicated by two pieces of information used to indicate the D2R time domain resource does not satisfy the first relationship.

[0241] The aforementioned Y D2R resources can coexist, meaning that the sidelobes or harmonics of the corresponding D2R frequencies do not overlap.

[0242] The interval between the Y D2R resources being greater than or equal to a preset value can be the interval between the sidelobes or harmonics of the corresponding D2R frequency being greater than or equal to a preset value.

[0243] The aforementioned D2R resources can be either D2R frequency domain resources or D2R time domain resources.

[0244] In this embodiment, the first information set can include information indicating D2R resources that do not satisfy the first relationship, but the first indication information indicates Y D2R resources that satisfy the first relationship, thereby avoiding the simultaneous occurrence of D2R resources that cannot be used at the same time.

[0245] As an optional implementation, information indicating D2R frequency domain resources or information indicating D2R time domain resources corresponds to a second piece of information, the second piece of information including one of the following:

[0246] Message 1;

[0247] The random ID or RN16 number transmitted in message 1;

[0248] Information about the D2R resources in transmission message 1;

[0249] The response to message 1;

[0250] Equipment identification.

[0251] In this embodiment, the information used to indicate D2R frequency domain resources or the information used to indicate D2R time domain resources can be one-to-one with message 1, so that different devices can determine different D2R resources to avoid D2R resource conflicts.

[0252] It can be realized that the information used to indicate D2R frequency domain resources or the information used to indicate D2R time domain resources are in one-to-one correspondence with the random ID or RN16 number transmitted in message 1. In this way, different devices can determine different D2R resources to avoid D2R resource conflicts.

[0253] It can be realized that the information used to indicate D2R frequency domain resources or the information used to indicate D2R time domain resources corresponds one-to-one with the D2R resource information of transmission message 1. In this way, different devices can determine different D2R resources to avoid D2R resource conflicts.

[0254] It can be realized that the information used to indicate D2R frequency domain resources or the information used to indicate D2R time domain resources is in one-to-one correspondence with the response to message 1, so that different devices can determine different D2R resources to avoid D2R resource conflicts.

[0255] It can be realized that the information used to indicate D2R frequency domain resources or the information used to indicate D2R time domain resources are in one-to-one correspondence with the device identifier, so that different devices can identify different D2R resources to avoid D2R resource conflicts.

[0256] As an optional implementation, the message 2 sent by the reader carries Y pieces of second information, wherein the Y pieces of information for indicating D2R frequency domain resources or for indicating D2R time domain resources correspond to the Y pieces of second information respectively;

[0257] Wherein, the order of the Y pieces of information indicating D2R frequency domain resources or the order of the Y pieces of second information in message 2 is the same as the order of the second pieces of information; or

[0258] The order of the Y pieces of information used to indicate D2R frequency domain resources or the Y pieces of information used to indicate D2R time domain resources is the same as the order of the values ​​of the Y pieces of second information.

[0259] The second information mentioned above can be found in the corresponding description of the above-described implementation method.

[0260] When the first information is the information carried by message 2, the Y second information carried by message 2 may be that message 2 carries the response corresponding to message 1 and also carries the first information, such as the first indication information, so that the first indication information and the response corresponding to message 1 can correspond in a certain order.

[0261] The order of the values ​​of the aforementioned Y second pieces of information can be from largest to smallest or from smallest to largest.

[0262] For example, if the multiple second pieces of information included are a, b, c, d, and the size order is b < a < d < c, then the multiple pieces of information for indicating D2R frequency-domain resources or the multiple pieces of information for indicating D2R time-domain resources respectively correspond to b, a, c, d.

[0263] In this embodiment, the order of the Y pieces of information for indicating D2R frequency-domain resources or the order of the Y pieces of information for indicating D2R time-domain resources can be determined by the same order or the same value order of the Y second pieces of information in the Message 2. Thus, different devices can determine different D2R resources to avoid D2R resource conflicts.

[0264] As an optional embodiment, the Message 2 sent by the reader / writer includes responses to Y Message 1s, and the first indication information is carried in the responses to the Y Message 1s; or,

[0265] The first indication information is carried in the shared scheduling information in the Message 2 sent by the reader / writer, and the shared scheduling information schedules Y devices or the shared scheduling information indicates Y D2R resources (for example, indicates Y D2R frequency-domain resources or time-domain resources or time-frequency resources); or

[0266] The Message 2 sent by the reader / writer includes Y pieces of scheduling information, and the first indication information is carried in the Y pieces of scheduling information, and the Y pieces of scheduling information respectively schedule Y devices.

[0267] Taking the information for D2R frequency-domain resources as the value information of R as an example, the above first information can be as shown in FIGS. 7, FIGS. 8, and FIGS. 9, that is, R or the index of R is carried in the response, or, R or the index of R is carried in the shared scheduling information, or, R or the index of R is carried in the dedicated scheduling information.

[0268] In this embodiment, it can be realized that the above first indication information is indicated by the response, the shared scheduling information, or the dedicated scheduling information, thereby saving signaling overhead.

[0269] As an optional embodiment, when the D2R resource is the frequency-domain resource of Message 1, the frequency-domain resource of the D2R resource of Message 3 is the same as the frequency-domain resource of the Message 1.

[0270] Among them, the frequency-domain resource of the D2R resource of the above Message 3 being the same as the frequency-domain resource of the Message 1 can be realized by the following methods:

[0271] By default, the frequency-domain resource of the D2R resource of Message 3 is the same as the frequency-domain resource of the Message 1; or,

[0272] The reader / writer indicates or configures that the first information corresponding to Message 3 is the same as the first information corresponding to Message 1; or,

[0273] When the first information is the control information corresponding to message 1, the reader indicates or configures the control information corresponding to message 3 to the device to be the same as the control information corresponding to message 1.

[0274] Among them, the first information corresponding to the above message 3 includes the first indication information, the second indication information, the third indication information, and the fourth indication information. The D2R resources corresponding to these are D2R resources used to transmit message 3.

[0275] The aforementioned first information is the control information corresponding to message 1, which can mean that the first information is the control information corresponding to message 1, or that the first information is the information in the control information corresponding to message 1.

[0276] In this embodiment, since the frequency domain resources of the D2R resources of message 3 are the same as those of message 1, there is no need to additionally indicate the frequency domain resources of the D2R resources of message 3, thereby saving transmission overhead.

[0277] As an optional implementation, the Y D2R resources include FDM resources, and the FDM resources include at least one of the following:

[0278] All or part of the FDM resources in at least one time domain resource within a single inventory;

[0279] All or part of the FDM resources on at least one time-domain resource indicated by the paging message or R2D transmission that triggers message 1;

[0280] All or part of the FDM resources on at least one time-domain resource indicated by the R2D transmission of trigger message 3;

[0281] All or part of the FDM resources on at least one time-domain resource indicated by message 2;

[0282] All or part of the FDM resources on at least one time-domain resource in the transmission process or session between the reader and at least one device;

[0283] At least one FDM resource corresponding to a first time-domain resource.

[0284] The aforementioned at least one time-domain resource may be at least one time-domain resource indicated by the paging message triggering message 1 or the R2D transmission. The aforementioned first time-domain resource may be a specific time-domain resource. The aforementioned at least one first time-domain resource may be X1 first time-domain resources.

[0285] All or part of the FDM resources on at least one time-domain resource mentioned above can be all or part of the FDM resources on at least one time-domain resource within one or more inventory counts, specifically the FDM resources of message 1 and message 3. All or part of the FDM resources on at least one time-domain resource mentioned above can be FDM resources of different D2R transmissions.

[0286] In the above embodiments, it is possible to indicate different FDM resources.

[0287] As an optional implementation, the Y D2R resources include TDM resources, and the TDM resources include at least one of the following:

[0288] At least one frequency domain resource, including all or part of the TDM resources;

[0289] All or part of the TDM resources on at least one frequency domain resource indicated by the paging message or R2D transmission that triggers message 1;

[0290] All or part of the TDM resources on at least one frequency domain resource indicated by the R2D transmission of trigger message 3;

[0291] All or part of the TDM resources on at least one frequency domain resource indicated by message 2 of the random access;

[0292] All or part of the TDM resources on at least one frequency domain resource in the transmission process or session between the reader and at least one device;

[0293] At least one TDM resource corresponding to a first frequency domain resource.

[0294] The aforementioned at least one frequency domain resource may be at least one frequency domain resource indicated by the paging message of trigger message 1 or R2D transmission, the aforementioned first frequency domain resource may be a specific frequency domain resource, and the aforementioned at least one first frequency domain resource may be X2 first frequency domain resources.

[0295] The aforementioned TDM resources on at least one frequency domain resource can be all or part of the TDM resources on at least one frequency domain resource within one or more inventory checks, and can be the TDM resources of message 1 and message 3. The aforementioned TDM resources on at least one time domain resource within one inventory check can be TDM resources of different D2R transmissions.

[0296] In the above embodiments, it is possible to indicate different TDM resources.

[0297] In some implementations, the aforementioned Y D2R resources include the aforementioned TDM resources and FDM resources, i.e., a combination of TDM resources and FDM resources. For example, the aforementioned Y D2R resources include X1 time-domain resources of TDM and X2 frequency-domain resources of FDM. The X1 time-domain resources of TDM and the X2 frequency-domain resources of FDM can be indicated separately, such as indicating the D2R resources corresponding to the X1 time-domain resources of TDM and the X2 frequency-domain resources of FDM respectively, or indicating a combination of the X1 time-domain resources of TDM and the X2 frequency-domain resources of FDM. That is, the first information is used for the combination formed by the X1 time-domain resources of TDM and the X2 frequency-domain resources of FDM.

[0298] The aforementioned time-domain resources can be interpreted as time-domain locations, and frequency-domain resources can be interpreted as frequency-domain locations. In this embodiment, the reader sends first information to the device, the first information including at least one of the following: first indication information for indicating Y devices to the reader's D2R resources, second indication information for indicating an information set, third indication information for indicating the value of Y, and fourth indication information for indicating the maximum value of Y, wherein the first indication information belongs to the information set, and Y is a positive integer; wherein the first indication information includes at least one of the following: information for indicating D2R frequency-domain resources and information for indicating D2R time-domain resources; the information for indicating D2R frequency-domain resources includes at least one of the following: R, frequency offset, and frequency-domain location information, wherein R includes or represents the number of repetitions, repetition parameters, or repetition factors; the information for indicating D2R time-domain resources includes at least one of the following: time-domain location information and delay information; the information set includes at least one of the following: an information set for indicating D2R frequency-domain resources and an information set for indicating D2R time-domain resources. In this way, since the first information includes at least one of the first indication information, the second indication information, the third indication information and the fourth indication information, the device and the reader can understand the D2R resources in a consistent manner, thereby improving the device's transmission performance, such as improving the device's access performance.

[0299] Please refer to Figure 10, which is a flowchart of an information receiving method provided in an embodiment of this application. As shown in Figure 10, it includes the following steps:

[0300] Step 1001: The device acquires the first information;

[0301] Wherein, obtaining the first information may be by directly receiving the first information sent by the reader, or by the device obtaining the first information based on the information sent by the reader, such as the first indication information indicated by the reader, and at least one of the second indication information, the third indication information, and the fourth indication information may be determined based on the first indication information; or the device obtaining the first information based on the information sent by the reader, such as the second indication information indicated by the reader, and at least one of the first indication information, the third indication information, and the fourth indication information may be determined based on the second indication information.

[0302] Step 802: The device determines device-to-reader (D2R) resources based on the first information;

[0303] The first information includes at least one of the following:

[0304] The first indication information is used to indicate Y devices to the D2R resource of the reader / writer; the second indication information is used to indicate the information set; the third indication information is used to indicate the value of Y; and the fourth indication information is used to indicate the maximum value of Y. The first indication information belongs to the information set, and Y is a positive integer.

[0305] The first indication information includes at least one of the following: information for indicating D2R frequency domain resources, and information for indicating D2R time domain resources;

[0306] The information used to indicate D2R frequency domain resources includes at least one of the following: R, frequency offset, and frequency domain location information, wherein R includes or represents the number of repetitions, repetition parameters, or repetition factors;

[0307] The information used to indicate D2R time-domain resources includes at least one of the following: time-domain location information and time delay information;

[0308] The information set includes at least one of the following: an information set for indicating D2R frequency domain resources, and an information set for indicating D2R time domain resources.

[0309] Optionally, the first information satisfies at least one of the following:

[0310] When the D2R resource is used to transmit message 1 or message 3, or when the D2R resource is a D2R resource corresponding to the identification information of the device, the first information includes the third indication information.

[0311] When the frequency division multiplexing (FDM) resources or time division multiplexing (TDM) resources are D2R resources of multiple devices, the first information includes the first indication information or the third indication information, wherein the Y D2R resources indicated by the first indication information are D2R resources in the FDM resources or the TDM resources, or the D2R resources corresponding to the value of Y indicated by the third indication information are D2R resources in the FDM resources or the TDM resources.

[0312] In the case that the D2R resource is a D2R resource corresponding to multicast R2D transmission, or the D2R resource corresponds to multiple devices that have been successfully inventoried or successfully accessed, or the D2R resource corresponds to multiple specific devices, the first information includes the third indication information.

[0313] If the D2R resource is a D2R resource corresponding to unicast transmission, or the D2R resource corresponds to a device that has been successfully inventoried or successfully accessed, or the D2R resource corresponds to a specific device, the first information does not include the third indication information, or the value of Y is 1.

[0314] Optionally, the value of Y is equal to the number of messages 1 corresponding to message 2 sent by the reader; or,

[0315] The value of Y is equal to the number of D2R resources corresponding to the R2D transmission sent by the reader; or,

[0316] The value of Y is equal to the number of devices corresponding to the R2D transmission sent by the reader; or,

[0317] The value of Y is equal to the number of message 1s received by the reader; or,

[0318] The value of Y is equal to the number of responses carried in the R2D transmission sent by the reader, wherein the response is a response to message 1 of random access, or the response is a response to the D2R transmission received by the reader; or,

[0319] The value of Y is equal to the number of random IDs or random RN16 numbers carried in message 2 sent by the reader; or,

[0320] The value of Y includes at least one of the following: the number of D2R resources or locations in FDM, the number of D2R resources or locations in TDM; or

[0321] The value of Y is the number agreed upon in the protocol, or the value of Y is indicated by the reader during the inventory process; and the reader indicates to the device at least one of the following: whether the information indicating D2R frequency domain resources or the information indicating D2R time domain resources exists in the first information, whether the information indicating D2R frequency domain resources or the information indicating D2R time domain resources is valid or used, and whether the information indicating D2R frequency domain resources or the information indicating D2R time domain resources has an actual corresponding D2R resource.

[0322] Optionally, the first information may further indicate at least one of the following:

[0323] Is this the final response?

[0324] Is there a response?

[0325] Is this the last D2R scheduling information?

[0326] Whether it is the last piece of information used to indicate D2R frequency domain resources or the last piece of information used to indicate D2R time domain resources;

[0327] Does D2R have scheduling information?

[0328] Does information exist to indicate D2R frequency domain resources or D2R time domain resources?

[0329] Optionally, the value of Y is indicated by at least one of the following:

[0330] Is this the final response?

[0331] Is there a response?

[0332] Is this the last D2R scheduling information?

[0333] Whether it is the last piece of information used to indicate D2R frequency domain resources or the last piece of information used to indicate D2R time domain resources;

[0334] Does D2R have scheduling information?

[0335] Does information exist to indicate D2R frequency domain resources or D2R time domain resources?

[0336] Optionally, the information set indicated by the second indication information includes at least a portion of the information set agreed upon in the protocol.

[0337] Alternatively, if Y is greater than 1:

[0338] The Y D2R resources are D2R resources that can be used simultaneously; or

[0339] The Y D2R resources are coexistent; or

[0340] The Y D2R resources do not overlap; or

[0341] The interval between the Y D2R resources is greater than or equal to a preset value.

[0342] Optionally, the first indication information satisfies at least one of the following:

[0343] The first instruction information indicates the Y D2R resources in a first preset order;

[0344] The first value is the number of bits or chips corresponding to information indicating D2R frequency domain resources or information indicating D2R time domain resources; the second value is the number of chips corresponding to information indicating D2R frequency domain resources or information indicating D2R time domain resources. The first value is equal to one of the following: log2(My), log2(Ymax), log2(Y), and the second value is equal to one of the following: log2(My)*2*M, log2(Ymax)*2*M, log2(Y)*2*M, log2(My)*M, log2(Ymax)*M, log2(Y)*M.

[0345] The total number of bits or chips in the first indication information is a third value, or the total number of chips in the first indication information is a fourth value, wherein the third value is equal to one of the following: Y*log2(My), Y*log2(Ymax), Y*log2(Y), and the fourth value is equal to one of the following: Y*log2(My)*2*M, Y*log2(Ymax)*2*M, Y*log2(Y)*2*M, Y*log2(My)*M, Y*log2(Ymax)*M, Y*log2(Y)*M;

[0346] Wherein, My represents the number of values ​​corresponding to or included in the D2R resource range information, Ymax is the maximum value of Y, and M is the number of chips or the on / off keying OOK modulation order corresponding to one bit of the first indication information.

[0347] Optionally, if the first information includes the first indication information and also includes at least one of the second indication information and the third indication information, the order of the second indication information and the third indication information with the first indication information in the first information is a second preset order.

[0348] Optionally, the first information indicates at least two of the first indication information, the second indication information, and the third indication information in a combined indication manner. For example, the first information includes information 1 and information 2, which together indicate the first indication information and the second indication information. For example, the first information includes information 1, which together indicates the first indication information and the second indication information.

[0349] Optionally, at least two of the first indication information, the second indication information, and the third indication information are indicated by the same index or identifier; or,

[0350] The first information includes second indication information, and the set of information indicated by the second indication information corresponds to the first indication information or the third indication information.

[0351] The first information includes the third indication information, and the value of Y indicated by the third indication information corresponds to the first indication information or the second indication information;

[0352] The first information includes the first indication information, and the first indication information corresponds to the second indication information or the third indication information.

[0353] Optionally, the first indication information indicates Y D2R resources via a bitmap, bit string, or chip string.

[0354] Optionally, the number of bits contained in the bitmap or the bit string is equal to Y, Ymax, or My, or the number of chips contained in the chip string is equal to Y or My, where My represents the number of information items corresponding to the information set, and Ymax is the maximum value of Y; and / or

[0355] One bit in the bitmap or the bit string corresponds to or indicates at least one piece of information in the information set used to indicate D2R frequency domain resources or D2R time domain resources; or, one chip in the chip string corresponds to or indicates at least one piece of information in the information set used to indicate D2R frequency domain resources or D2R time domain resources.

[0356] Optionally, the second indication information is an indication information set via a bitmap, bit string, or chip string;

[0357] Wherein, a bit in the bitmap or the bit string indicates at least one piece of information in the information set for indicating D2R frequency domain resources or for indicating D2R time domain resources; or, a chip in the chip string indicates at least one piece of information in the information set for indicating D2R frequency domain resources or for indicating D2R time domain resources.

[0358] Optionally, the information set indicated by the second indication information includes a first information set, the first information set including information indicating D2R resources that do not satisfy the first relation, and the Y D2R resources indicated by the first indication information are D2R resources that satisfy the first relation;

[0359] The first relationship includes:

[0360] Multiple D2R resources are D2R resources that can be used simultaneously; or

[0361] Multiple D2R resources can coexist; or

[0362] Multiple D2R resources do not overlap; or

[0363] The interval between multiple D2R resources is greater than or equal to the preset value.

[0364] Optionally, information indicating D2R frequency domain resources or information indicating D2R time domain resources corresponds to a second piece of information, the second piece of information including one of the following:

[0365] Message 1;

[0366] The random ID or RN16 number transmitted in message 1;

[0367] Information about the D2R resources in transmission message 1;

[0368] The response to message 1;

[0369] Equipment identification.

[0370] Optionally, the message 2 sent by the reader carries Y pieces of second information, wherein the Y pieces of information for indicating D2R frequency domain resources or for indicating D2R time domain resources correspond to the Y pieces of second information respectively;

[0371] Wherein, the order of the Y pieces of information indicating D2R frequency domain resources or the order of the Y pieces of second information in message 2 is the same as the order of the second pieces of information; or

[0372] The order of the Y pieces of information used to indicate D2R frequency domain resources or the Y pieces of information used to indicate D2R time domain resources is the same as the order of the values ​​of the Y pieces of second information.

[0373] Optionally, the message 2 sent by the reader includes responses to Y messages 1, with the first indication information carried in the responses to the Y messages 1; or,

[0374] The first indication information is carried in the shared scheduling information in message 2 sent by the reader / writer, wherein the shared scheduling information schedules Y devices or indicates Y D2R resources; or

[0375] The message 2 sent by the reader includes Y scheduling information, the first indication information is carried in the Y scheduling information, and the Y scheduling information respectively schedules Y devices.

[0376] Optionally, if the D2R resource is the frequency domain resource of message 1, the frequency domain resource of the D2R resource of message 3 is the same as the frequency domain resource of message 1.

[0377] Optionally, the frequency domain resources of the D2R resources in the default message 3 are the same as those in the frequency domain resources of the message 1; or,

[0378] The reader indicates to the device that the first information corresponding to message 3 is the same as the first information corresponding to message 1; or...

[0379] When the first information is the control information corresponding to message 1, the reader indicates or configures the control information corresponding to message 3 to the device to be the same as the control information corresponding to message 1.

[0380] Optionally, the Y D2R resources include FDM resources, and the FDM resources include at least one of the following:

[0381] At least one or more FDM resources in the time domain;

[0382] All or part of the FDM resources on at least one time-domain resource indicated by the paging message or R2D transmission that triggers message 1;

[0383] All or part of the FDM resources on at least one time-domain resource indicated by the R2D transmission of trigger message 3;

[0384] All or part of the FDM resources on at least one time-domain resource indicated by message 2;

[0385] All or part of the FDM resources on at least one time-domain resource in the transmission process or session between the reader and at least one device;

[0386] At least one FDM resource corresponding to a first time-domain resource.

[0387] Optionally, the Y D2R resources include TDM resources, and the TDM resources include at least one of the following:

[0388] At least one frequency domain resource, including all or part of the TDM resources;

[0389] All or part of the TDM resources on at least one frequency domain resource indicated by the paging message or R2D transmission that triggers message 1;

[0390] All or part of the TDM resources on at least one frequency domain resource indicated by the R2D transmission of trigger message 3;

[0391] All or part of the TDM resources on at least one frequency domain resource indicated by message 2 of the random access;

[0392] All or part of the TDM resources on at least one frequency domain resource in the transmission process or session between the reader and at least one device;

[0393] At least one TDM resource corresponding to a first frequency domain resource.

[0394] Optionally, the device determines D2R resources based on the first information, including:

[0395] The device determines Y pieces of information indicating D2R frequency domain resources or D2R time domain resources based on the first information, and randomly selects a D2R resource corresponding to one of the pieces of information indicating D2R frequency domain resources or D2R time domain resources; or

[0396] The device determines the information corresponding to the device among Y pieces of information indicating D2R frequency domain resources or D2R time domain resources, and determines the D2R resources based on the information indicating D2R frequency domain resources or D2R time domain resources.

[0397] The following example, using the R value of the first indication information as an example and the device as an A-IoT device, illustrates the method provided in this application embodiment:

[0398] Example 1:

[0399] The Reader instructs / configures first information (which can be control information or information within control information) to the device, and the device determines or selects D2R resources / transmissions based on the first information.

[0400] The first information indicates or includes at least one of the following: one or more R value information (i.e., Y information used to indicate D2R frequency domain resources in the above embodiments, wherein the i-th R value information is represented as Ry), R value range information (i.e., K D2R resource range information in the above embodiments, wherein the R value range information can be an upper limit or a maximum value, represented as Rmax; the possible values ​​corresponding to a certain R value information or all R value information are represented as {Ry}), the number of R value information (i.e. the value of Y in the above embodiments, wherein the number of R value information is represented as Y, or also called the available number of repetition numbers, or also called the number of possible values ​​of small frequency shift, or the number of FDM D2R resources), and the maximum value of the number of R value information Ymax (i.e., the maximum value of Y in the above embodiments).

[0401] In some implementations, if the D2R resource / transmission is a D2R resource / transmission of msg1 or msg3, then the first information indicates or contains the number of R value information;

[0402] In some implementations, if the D2R resource / transmission is a multicast D2R resource / transmission, or for multiple devices that have been successfully inventoried or have been successfully accessed, then the first information indicates or includes the number of R value information.

[0403] In some implementations, if the D2R resource / transmission is a unicast D2R resource / transmission, or is for a device that has been successfully inventoried or has been successfully accessed, then the first information does not indicate or contain the number of R value information, or the number of R value information is set to 1 by default.

[0404] In some implementations, the number of R value information may be: the number of msg1 corresponding to Y=msg2, or the number of responses containing msg1, or the number of random IDs or RN16 carried, or the number of D2R resources / transmissions of FDM on a time domain resource;

[0405] In some implementations, the number of R values ​​or Y is always the maximum number agreed upon by the protocol, and the first information indicates the existence, validity, or use of one or more or each Ry. Alternatively, it may be indicated or configured by the first paging or Query or QueryX or inventory message or select command or R2D transmission that triggers msg1 in a round of inventory counting; optionally, the reader indicates the existence, validity, or use of one or more or each Ry (e.g., indicated in the first information, or indicated or configured by the first paging or Query or QueryX or inventory message or select command or R2D transmission that triggers msg1 in a round of inventory counting).

[0406] In some implementations, Y is indirectly indicated by whether it is the last response information, the last D2R scheduling information, or the last R value information, or by whether there is any D2R scheduling information or whether there is any R value information. Optionally, if "whether it is the last response information," "whether it is the last D2R scheduling information," or "whether it is the last R value information" is "yes," then it can be known how many response information there are, including the current response information and the previous ones, so Y = the number of response information. Optionally, if "whether there is any D2R scheduling information" or "whether there is any R value information" is "yes," then it can be known how many scheduling information or R value information there are.

[0407] In some implementations, the range of R values ​​is always agreed upon by the protocol, or indicated or configured by the first paging, query, or queryX, inventory message, select command, or R2D transmission that triggers msg1 in a round of inventory counting. Optionally, the reader indicates the existence, validity, or use of one or more or each Ry (e.g., indicated in the first message, or indicated or configured by the first paging, query, or queryX, inventory message, select command, or R2D transmission that triggers msg1 in a round of inventory counting).

[0408] In some implementations, specific combinations of R values ​​cannot be simultaneously indicated, configured, or used. For example, if the number of repetitions is R, R = 1 and R = 2 cannot be simultaneously indicated, configured, or used; R = i and R = (2n+1)*i cannot be simultaneously indicated, configured, or used. For instance, the index, number, or identifier corresponding to R = 1 and the index, number, or identifier corresponding to R = 2 cannot be simultaneously indicated, configured, or used; or, for instance, the index, number, or identifier corresponding to R = i and the index, number, or identifier corresponding to R = (2n+1)*i cannot be simultaneously indicated, configured, or used.

[0409] It should be noted that the above information may indicate the value of the information, or it may indicate the index, number, or identifier corresponding to the value.

[0410] In this embodiment, the first information may include the following:

[0411] Option 1: Indicates the number of R and R respectively.

[0412] In some implementations, the first information includes Y R value information (which may be Y blocks, or a block but containing Y sub-blocks).

[0413] In some implementations, the first information also carries the number of R value information (with a value of Y); wherein the number of R value information may appear or be placed before the R value information.

[0414] In some implementations, the Y R values ​​are sorted in ascending or descending order of Ry values, for example, from earliest to latest, or from highest to lowest value, in ascending or descending order of Ry values.

[0415] In some implementations, the number of information bits or chips corresponding to one R value is log2(|{Ry}|) or log2(Ymax) or log2(Y).

[0416] It should be noted that in the embodiments of this application, |{Ry}| represents the number of values ​​in {Ry}. For example, if {Ry} = {1,2,4,8,16,32,64,128}, then |{Ry}| = 8. If {Ry} = {1,4,8,16,32,64,128} or {2,4,8,16,32,64,128}, then |{Ry}| = 7.

[0417] In some implementations, the chip number corresponding to one R value is log2(|{Ry}|)*2*M or log2(Ymax)*2*M or log2(Y)*2*M, where M is the chip number corresponding to one first information bit (mainly for cases requiring line coding).

[0418] In some implementations, the total number of information bits or chips corresponding to all R values ​​is Y*log2(∣{Ry}∣) or Y*log2(Ymax) or Y*log2(Y).

[0419] In some implementations, the total number of chips corresponding to all R values ​​is Y*log2(∣{Ry}∣)*2*M or Y*log2(Ymax)*2*M or Y*log2(Y)*2*M, where M is the number of chips corresponding to one first information bit (mainly for cases requiring line coding).

[0420] In some implementations, the reader includes first information 1 and first information 2 in the R2D transmission. First information 1 is the number of R value information and first information 2 is Y R value information. After the device reads the number, it knows that there are Y R value information in the future, and thus it can deduce the number of D2R resources of FDM, the corresponding small frequency shift, and the frequency domain position of D2R resources.

[0421] In some implementations, Y = 3, and R may take the values ​​{Ry} = {1,2,4,8,16,32,64,128} or {1,4,8,16,32,64,128} or {2,4,8,16,32,64,128}, and |{Ry}| = 8 or 7.

[0422] In the three R value information {R0, R1, R2}, each Ry corresponds to three information bits or chips. In one implementation, the values ​​are {2, 8, 64}, and the small frequency shifts corresponding to these values ​​have corresponding D2R resources or transmissions.

[0423] In some implementations, Y = 3, and the possible values ​​of R are {Ry} = {1, 2, 4, 8} or {1, 4, 8} or {2, 4, 8}, |{Ry}| = 4 or 3. The three R values ​​{R0, R1, R2} each correspond to two information bits or chips. In one implementation, the R values ​​are {1, 4, 8}, and the small frequency shifts corresponding to these values ​​have corresponding D2R resources / transmissions. {Ry} can be specified by the protocol or indicated by the reader.

[0424] In some implementations, the first information may be as shown in Figure 11.

[0425] In some implementations, Y = 3, and the possible values ​​of R are {Ry} = {1, 2, 4, 8} or {1 or 2, 4, 8}, |{Ry}| = 4 or 3. The three R value information {R0, R1, R2} are the indices corresponding to the R values, each corresponding to 2 information bits or 2 chips. In one implementation, the index values ​​are {0, 2, 3}, and the corresponding R values ​​are {1, 4, 8}. These values ​​correspond to small frequency shifts with corresponding D2R resources / transmissions.

[0426] In some implementations, the first information may be as shown in Figure 12 below.

[0427] In some embodiments, the first information includes the number of R values ​​(each with a value of Y), the range of R values, and Y R values. Optionally, the number of R values ​​appears or precedes the R value information; or, the number of R values ​​appears or precedes the range of R values; or, the range of R values ​​appears or precedes the R value information. The R value information can directly indicate the value of R, or it can indicate the index, number, or identifier corresponding to the R value. In some embodiments, the first information can be as shown in Figure 13.

[0428] In some implementations, the range of values ​​for R is an index or number, corresponding to a predefined or preconfigured {Ry} in the protocol; in some implementations, the first information can be as shown in Figure 14 below.

[0429] It should be noted that the number of R values ​​(with a value of Y) in the table or scheme mentioned above may not exist. For example, Y may be determined by other methods and does not need to be displayed. In this case, there is no block corresponding to Y=2 or Y=3 in the diagram.

[0430] In some implementations, the first information includes a range of R values, where all R values ​​within this range correspond to small frequency shifts with corresponding D2R resources or transmissions. The R value range information can be indicated as an index, for example, as shown in Figure 15.

[0431] Option 2: Combine and simultaneously indicate at least two pieces of information, such as R and the number of R.

[0432] In some implementations, the number of R value information (with a value of Y) and the R value range information and at least two of the Y R value information indicated by the first information or described in Scheme 1 are jointly indicated; for example, the first information includes an index or identifier, which corresponds to at least two of the number of R value information (with a value of Y) and the R value range information and the Y R value information, such as the first information being a frequency domain information field or a joint indication field, where the frequency domain information field or the joint indication field is one or more indexes or identifiers.

[0433] In some implementations, the number of R value information (with a value of Y) corresponds to the value range information of R ({Ry}), or it can be described as the number of R value information (with a value of Y) corresponds to the Y R value information.

[0434] In some implementations, the first information includes at least an index, number, or identifier of the range of R values, and the index, number, or identifier needs to correspond to a certain {Ry} predefined or preconfigured in the protocol; and or, the first information includes at least one or more indexes, numbers, or identifiers corresponding to R value information (it can be that the whole corresponds to one index, number, or identifier, or each can correspond to one index, number, or identifier respectively).

[0435] Option 3:

[0436] In some implementations, the design of the R value information indicated by the first information includes: the R value information is a bitmap, a bit string, or a chip; for example: the number of bits or chips in the bitmap or bit string is |{Ry}| or Y; or, each bit or chip in the bitmap corresponds to a value in {Ry}, and if a bit is 0 or a chip is low, it indicates that the D2R transmission or resource corresponding to the small frequency shift of Ry does not exist; and / or, if a bit is 1 or a chip is high, it indicates that the D2R transmission or resource corresponding to the small frequency shift of Ry exists; or conversely, if a bit is 1 or a chip is high, it indicates that the D2R transmission or resource corresponding to the small frequency shift of Ry does not exist; and / or, if a bit is 0 or a chip is low, it indicates that the D2R transmission or resource corresponding to the small frequency shift of Ry exists.

[0437] The correspondence between the bit or chip and {Ry} can be from the leftmost to the rightmost, or from the most significant bit to the least significant bit, and the bits or chips are sorted in ascending or descending order according to the value of Ry.

[0438] In some implementations, the number of bits or chips in the bitmap is Y or Ymax. Furthermore, in this scheme, Y or Ymax can be protocol-defined, pre-configured, or indicated by the reader.

[0439] In this embodiment, in some implementations, the aforementioned R value range information can be a bitmap, a bit string, or a chip. For example, each bit or chip in the bitmap corresponds to a value in a preset candidate value set (e.g., {1,2,4,8,16,32,64,128,256}). If a bit is 0 or a chip is low, it indicates that the value corresponding to that bit in the preset candidate value set does not belong to the R value range information {Ry}. And / or, if a bit is 1 or a chip is high, it indicates that the value corresponding to that bit in the preset candidate value set belongs to the R value range information {Ry}. Or conversely, if a bit is 1 or a chip is high, it indicates that the value corresponding to that bit in the preset candidate value set does not belong to the R value range information {Ry}. And / or, if a bit is 0 or a chip is low, it indicates that the value corresponding to that bit in the preset candidate value set belongs to the R value range information {Ry}.

[0440] The correspondence between the bit or chip and {Ry} can be from the leftmost to the rightmost, or from the most significant bit to the least significant bit, and the bits or chips can be sorted in ascending or descending order of their values.

[0441] The range of values ​​for R can include both 1 and 2. However, 1 and 2 cannot be indicated or used simultaneously.

[0442] In this embodiment, in some implementations, there may be a correspondence between the R value information and the second information, wherein the second information includes at least one of the following:

[0443] Msg1, or, a random ID (e.g., RN16) generated by the device and transmitted in Msg1, or, the identifier, index, or number corresponding to msg1 (resource); for example: if msg2 carries a response for the resource msg1 with index a, then at least one R value corresponds to a; if msg2 also carries a response for the resource msg1 with index b, then at least one R value corresponds to b; if msg2 carries an RN16 sent by a certain device, then at least one R value corresponds to RN16.

[0444] The response from Msg1 or the random ID generated by the Device and transmitted in Msg1;

[0445] Device ID or identifier.

[0446] In this embodiment, in some implementations, if Msg2 needs to carry responses / response information to multiple, for example, N, N>1 Msg1s, the correspondence relationship of the order of the response / response information in Msg2 or the nth position of the response / response information among these N response information includes:

[0447] Multiple R values ​​correspond sequentially to multiple first information values;

[0448] For example: Following the order of multiple first information messages; if the first information is a response to msg1, assuming msg2 carries responses to two msg1 resources, one for msg1 resource with RN16=a and the other for msg1 resource with RN16=b, then the order of the R values ​​corresponding to the two responses should be consistent with the order of the two responses. For example, if msg2 carries {response a, response b}, then the order of the R values ​​is {Ra, Rb}. Through this method, the device can know its corresponding R value information; for example, how to determine the R value corresponding to {Ra, Rb} as any one of the three schemes mentioned above;

[0449] For example, if the first piece of information is the index of msg1, and msg2 carries the response to the msg1 resource with index a and the msg1 resource with index b on X msg1 resources, then the sorting of the R values ​​corresponding to the two responses should be consistent with the sorting of the two responses. For example, if msg2 carries {response a, response b}, then the sorting of the R values ​​should be {Ra, Rb}.

[0450] For example, the values ​​of multiple first information can be assigned in ascending or descending order.

[0451] In this embodiment, the application granularity or scope of the various implementation methods described above can be at least one of the following, and / or, the first information corresponds to at least one of the following:

[0452] The first information refers to the FDM D2R resources / transmissions on (each / continuous) A1 time-domain resources within a single inventory count, or some or all of them. For example, the first information is used for all FDM D2R resources / transmissions on different time-domain resources within a single inventory count, whether it is msg1 or msg3. Or, for example, the first information corresponds to the FDM D2R resources / transmissions on one (A1=1) time-domain resource within a single inventory count. That is, each FDM D2R resource / transmission on a time-domain resource has its own corresponding first information, and the values ​​or schemes used for these first information can be different or the same.

[0453] The first information is configured or indicated (e.g., for each or consecutively) A2 time-domain resources or some or all D2R resources / transmissions that trigger the paging or R2D transmission of msg1. For example, if the paging message is configured with 4 msg1 time-domain locations, and there are two FDM msg1 candidate resources at each msg1 time-domain location, then the first information is used for all FDM D2R resources / transmissions at these 4 msg1 time-domain locations, that is, the FDM D2R resources / transmissions on all time-domain resources correspond to the same first information; or, for example, the first information corresponds to one (A2=1) time-domain resource of the D2R resources / transmissions configured to trigger the paging or R2D transmission of msg1, that is, each time-domain resource of the FDM D2R resource / transmission has its own corresponding first information, and the values ​​or schemes used for these first information can be different or the same.

[0454] The first information triggers the R2D transmission of msg3 or the FDM D2R resource / transmission on (e.g., each or consecutive) A3 time-domain resources configured or indicated by Msg2; for example, if msg2 configures two msg3 time-domain locations, and there are two FDM msg3 candidate resources at each msg3 time-domain location, then the first information is used for all FDM D2R resources / transmissions at these two msg3 time-domain locations, that is, the FDM D2R resources / transmissions on all time-domain resources correspond to the same first information; or, for example, the first information corresponds to the FDM D2R resource / transmission on one (A2=1) time-domain resource among the R2D transmission of msg3 or the D2R resources / transmissions configured by Msg2, that is, the FDM D2R resource / transmission on each time-domain resource has its own corresponding first information, and the values ​​or schemes used for these first information can be different or the same;

[0455] In a transmission process or session between a reader and one or more devices or one or more device IDs, (e.g., every or consecutively) A4 time-domain resources or some or all of the FDM D2R resources / transmissions; for example, when a reader and multiple devices are performing an FDM group cast or broadcast transmission or session, the first information is used in this transmission process or session. For example, when a reader performs a unicast transmission or session with a device, there may be at least one D2R resource / transmission during the transmission process or session. However, the reader may simultaneously schedule multiple device D2R resources / transmissions in FDM mode. The first information is used in this transmission process or session, meaning that the FDM D2R resources / transmissions on all time-domain resources correspond to the same first information. For another example, if an R2D transmission is configured with two D2R time-domain locations, and each D2R time-domain location has two FDM D2R candidate resources, then the first information corresponds to the FDM D2R resource / transmission at one time-domain location. That is, each FDM D2R resource / transmission on each time-domain resource has its own corresponding first information, and the values ​​or schemes used for these first information can be different or the same.

[0456] It corresponds to X1 time-domain resources and / or X2 FDM frequency-domain resources; for example, there is a correspondence or combination between some frequency-domain resources and some time-domain resources (for example, when the number of time-domain resources is X1 and X2, they correspond to different frequency-domain resources), so there are corresponding schemes or first information for different combinations of X1 or X2 or {X1,X2}.

[0457] The device determines the first information, and based on the first information, the device determines or selects D2R resources / transmissions (or, in other words, determines a small frequency shift).

[0458] In some implementations, the determination method is to obtain the first information sent by the reader, as described in the corresponding explanation on the reader side above, which will not be repeated here.

[0459] In some implementations, one way for a device to determine the number of R value information is by the number of msg1 corresponding to Y = msg2, or the number of responses containing msg1, or the number of R16 carried.

[0460] In some implementations, the device determines or selects D2R resources or transports including:

[0461] (For example, when sending msg1) If the device randomly selects an R value, the device determines or selects the D2R resource / transmission corresponding to that R value.

[0462] In some implementations (e.g., for msg3), the device determines or selects D2R resources / transmissions based on first information. For example, the device determines or selects D2R resources or transmissions based on R value information that corresponds to the first information of the device. For example, if the device corresponds to the response of the second msg1 carried in msg2, then the R value information corresponding to that response is R2, and the device determines or selects the D2R resources or transmissions corresponding to R2.

[0463] In some implementations, the frequency domain resources used for Msg3 transmission are the same as those used by the device for Msg1 transmission, and / or, the frequency domain resources used by the device for Msg3 transmission are always the same as those used by the device for Msg1 transmission, and / or, the first information configured or indicated for msg3 is the same as the first information configured or indicated for msg3; for example, if the reader does not indicate this, the reader indicates that the frequency domain resources used for Msg3 transmission are the same as those used by the device for Msg1 transmission, and / or, the device considers that the frequency domain resources used for Msg3 transmission are the same as those used by the device for Msg1 transmission.

[0464] It should be noted that this embodiment mainly uses frequency domain resources as an example for illustration. The method provided in this embodiment can be extended to the D2R time domain, for example:

[0465] The solution provided in this embodiment can be used not only to configure / indicate the frequency domain information of D2R resources / transmissions, but also to configure / indicate the time domain information of resources / transmissions, as shown by the following modifications:

[0466] The value of R is replaced with: T D2R Information, of which T D2R It is the time-domain information of D2R resources / transmissions, such as the starting point of at least one or more or N time-domain positions of D2R resources / transmissions, or the position after adding an offset (which can be positive or negative) to the starting point of the time-domain position (which may be used to accommodate errors or introduced for flexibility), or the time gap between the time-domain position of the D2R resource / transmission and a reference point (such as triggering, configuring or scheduling the R2D transmission of the D2R resource / transmission).

[0467] The number of R value information is replaced with: the number of time-domain locations of TDM D2R resources / transmissions;

[0468] {Ry} is replaced with: {T D2Rx}, for T D2R Information on the range of values ​​that can be taken;

[0469] In some implementations, the aforementioned time-domain location can be a time window containing one or more TDM D2R resources / transmissions, or it can be a time-domain resource of a D2R resource / transmission.

[0470] In the case where the terminal is a reader, the network-side device can provide the first information to the UE reader; or, the terminal reader can obtain the first information, or obtain auxiliary information and determine the first information based on the auxiliary information.

[0471] It should be noted that in this embodiment, if binary values, such as 0 or 1, are used when describing values, indices, identifiers, or numbers, they can be replaced with low or high levels. For example, 00 can be represented by two low levels, 01 by one low level and one high level, 10 by one high level and one low level, and 11 by two high levels. The levels can be continuous. The method for replacing strings of 0s and 1s with levels of more bits follows the same principle. High and low levels can also be replaced by "on" and "off" respectively.

[0472] Example 2:

[0473] This embodiment mainly describes the scheme of Option 1 above.

[0474] For example, the reader includes first information 1 and first information 2 in the R2D transmission. First information 1 is the number of R value information, and first information 2 is Y R value information. After the device reads the number, it knows that there are Y R value information in the future, so it can deduce the number of D2R resources in FDM, as well as the corresponding small frequency shift and the frequency domain position of the D2R resources.

[0475] In some implementations, Y = 3, corresponding to possible values ​​of R: {Ry} = {1, 2, 4, 8, 16, 32, 64, 128} or {1, 4, 8, 16, 32, 64, 128} or {2, 4, 8, 16, 32, 64, 128}, |{Ry}| = 8 or 7. The three R values ​​{R0, R1, R2} each correspond to three information bits or chips. In one implementation, the values ​​are {2, 8, 64}, and these values ​​correspond to small frequency shifts with corresponding D2R resources / transmissions.

[0476] In some implementations, Y = 3, corresponding to possible values ​​of R: {Ry} = {1, 2, 4, 8} or {1, 4, 8} or {2, 4, 8}, |{Ry}| = 4 or 3. The three R values ​​{R0, R1, R2} each correspond to two information bits or two chips. In one implementation, R values ​​are {1, 4, 8}, and these values ​​correspond to small frequency shifts with corresponding D2R resources / transmissions. In this embodiment, {Ry} can be protocol-defined, pre-configured, or indicated by the reader. The first information mentioned above is shown in Figure 16.

[0477] In some implementations, Y = 3, corresponding to possible values ​​of R: {Ry} = {1, 2, 4, 8} or {1, 4, 8} or {2, 4, 8}, |{Ry}| = 4 or 3. The three R value information {R0, R1, R2} are indices corresponding to the R values, each corresponding to 2 information bits or 2 chips. In one implementation, the index values ​​are {0, 2, 3}, and the corresponding R values ​​are {1, 4, 8}. These values ​​correspond to small frequency shifts with corresponding D2R resources / transmissions; the above first information is shown in Figure 17.

[0478] In this embodiment, {Ry} can be specified by the protocol, pre-configured, or indicated by the reader.

[0479] In some implementations, the first information includes the number of R values ​​(each with a value of Y), the range of R values, and Y R values.

[0480] Optionally, the number of R value information appears or is placed before the R value information;

[0481] Optionally, the number of values ​​for R appears or is placed before or after the range of values ​​for R;

[0482] Optionally, the range of values ​​for R may appear or be placed before the value information for R;

[0483] It should be noted that the value information of R can directly indicate the value of R, or it can indicate the index, number or identifier corresponding to the value of R.

[0484] In some implementations, Y = 2, corresponding to possible values ​​of R such that {Ry} = {2, 4, 8}, and two R value information {R0, R1} are the values ​​of R, which are 2 and 4 respectively, as shown in Figure 18.

[0485] In some implementations, Y = 2, and the possible values ​​of R are {Ry} = {2, 4, 8}. The two R value information {R0, R1} are the indices of the R values, which are 0 and 2 respectively, and the corresponding R values ​​are 2 and 8, as shown in Figure 19.

[0486] In some implementations, the range of values ​​for R is an index or number that corresponds to a predefined or preconfigured {Ry} in the protocol, as shown in Figure 20.

[0487] In some implementations, the first information includes R value range information, where all R values ​​within this range correspond to small frequency shifts with corresponding D2R resources / transmissions. The R value range information can be indicated in the form of an index, as shown in Figure 21.

[0488] Example 3:

[0489] This embodiment mainly describes the Option2 scheme described above.

[0490] For example, the reader includes a frequency domain information field or a joint indication field in R2D transmission. The different values ​​of the frequency domain information field or the joint indication field have a corresponding number of R value information (with a value of Y) and at least two of the Y R value information.

[0491] For example, any value in the frequency domain information domain or the joint indication domain corresponds to a combination, which is a combination of the number of R value information and Y R value information, wherein the combination includes any combination of the number of R value information and Y R value information. For example, Y includes at least a portion of 1 to 8 or at least a portion of 1 to 7, and Y R values ​​contain at least a portion of the set {1,2,4,8,16,32,64,128,256}. For example, Y R values ​​contain at least a portion of the set {1,2,4,8,16,32,64,128,256} or {1,4,8,16,32,64,128,256} or {2,4,8,16,32,64,128,256} or {1,2,4,8,16,32,64,128} or {1,4,8,16,32,64,128} or {2,4,8,16,32,64,128}. Thus, the combinations can include any combination of values ​​from the aforementioned set when Y is 1; combinations of two values ​​from the aforementioned set when Y is 2; combinations of three values ​​from the aforementioned set when Y is 3; combinations of four values ​​from the aforementioned set when Y is 4; combinations of five values ​​from the aforementioned set when Y is 5; combinations of six values ​​from the aforementioned set when Y is 6; combinations of seven values ​​from the aforementioned set when Y is 7; and combinations of eight values ​​from the aforementioned set when Y is 8. It should be noted that the above combinations can include combinations where R takes values ​​other than 1 and 2. For example, 000 indicates that there is only one R with a value of 1.

[0492] It should be noted that the numbers 1, 2, 3, etc. can be replaced with binary numbers 000, 001, 010, etc., or binary numbers 001, 010, 011, etc.

[0493] An example is shown in Table 1 below:

[0494] Table 1:

[0495] Another possible combination is shown in Table 2:

[0496] Table 2:

[0497] Note: The above correspondence between the values ​​of the joint indicator field and Y and {Ry} is just an example. Other correspondences can be supported. For example, 111 means Y = 7, corresponding to {1, 4, 8, 16, 32, 64, 128}. For example, 001 can mean Y = 4, etc.

[0498] For example, the reader includes the number of R value information (with a value of Y) in the R2D transmission, where the number of R value information (with a value of Y) corresponds to the value range information of R ({Ry}), or the number of R value information (with a value of Y) corresponds to the Y R value information.

[0499] For example, Y includes at least a portion of 1 to 8 or at least a portion of 1 to 7, while the value range information of R includes at least a portion of the set {1,2,4,8,16,32,64,128,256}. For example, the value range information of R includes at least a portion of the set {1,2,4,8,16,32,64,128,256} or {1,4,8,16,32,64,128,256} or {2,4,8,16,32,64,128,256} or {1,2,4,8,16,32,64,128} or {1,4,8,16,32,64,128} or {2,4,8,16,32,64,128}. When Y is 1, Y can indicate or correspond to the value range information of R consisting of any value from the above set. When Y is 2, Y can indicate or correspond to the value range information of R composed of 2 values ​​in the above set. When Y is 3, Y can indicate or correspond to the value range information of R composed of 3 values ​​in the above set. When Y is 4, Y can indicate or correspond to the value range information of R composed of 4 values ​​in the above set. When Y is 5, Y can indicate or correspond to the value range information of R composed of 5 values ​​in the above set. When Y is 6, Y can indicate or correspond to the value range information of R composed of 6 values ​​in the above set. When Y is 7, Y can indicate or correspond to the value range information of R composed of 7 values ​​in the above set. When Y is 8, Y can indicate or correspond to the value range information of R composed of 8 values ​​in the above set.

[0500] For example, Y includes at least a portion of 1 to 8 or at least a portion of 1 to 7, and Y R values ​​contain at least a portion of the set {1,2,4,8,16,32,64,128,256}. For example, Y R values ​​contain at least a portion of the set {1,2,4,8,16,32,64,128,256} or {1,4,8,16,32,64,128,256} or {2,4,8,16,32,64,128,256} or {1,2,4,8,16,32,64,128} or {1,4,8,16,32,64,128} or {2,4,8,16,32,64,128}. Thus, when Y is 1, Y can indicate or correspond to any value of R in the aforementioned set; when Y is 2, Y can indicate or correspond to two values ​​of R in the aforementioned set; when Y is 3, Y can indicate or correspond to three values ​​of R in the aforementioned set; when Y is 4, Y can indicate or correspond to four values ​​of R in the aforementioned set; when Y is 5, Y can indicate or correspond to five values ​​of R in the aforementioned set; when Y is 6, Y can indicate or correspond to six values ​​of R in the aforementioned set; when Y is 7, Y can indicate or correspond to seven values ​​of R in the aforementioned set; and when Y is 8, Y can indicate or correspond to eight values ​​of R in the aforementioned set. It should be noted that the above combinations can include combinations where the value of R is not 1 or 2. For example, 000 indicates that there is only one R with a value of 1.

[0501] Here is an example: when Y = 001, there are two R values, which are 1 and 4 respectively.

[0502] An example is shown in Table 3 below: where 000, 0, or 1 indicates that Y can be 000, 0, or 1, and so on.

[0503] Table 3:

[0504] It should be noted that the table above is only a few examples. In this application, any combination can be included, and it can also be a combination of values ​​from 1 to 512.

[0505] In some implementations, the first information includes at least an index or number of the R value range information, and the index or number corresponds to a certain {Ry} predefined or preconfigured by the protocol; or, the first information includes at least one or more indexes or numbers corresponding to R value information (it can be that the whole corresponds to one index, number or identifier, or each corresponds to one index, number or identifier respectively); for example, if the first information contains {Ry}index=1, it means that {Ry}=1,4,8, which means that there are 3 R; the D2R resources corresponding to the small frequency shift of 1,4,16 are available, as shown in Figure 22.

[0506] For example, the first information contains the indices of three Rs, namely 0, 1, and 3, and the corresponding Rs are 1, 4, and 16, which means that there are three Rs; the D2R resources corresponding to the small frequency shift of 1, 4, and 16 are available, as shown in Figure 23.

[0507] In the above scheme, the correspondence between the index or number or identifier and the corresponding {Ry} or R can be specified by the protocol, pre-configured, or indicated by the reader configuration or indication (e.g., indicated in the first message or in a previous message), without limitation.

[0508] In the above scheme, the number of R values ​​can be specified by the protocol, pre-configured, configured by the reader, or indicated (e.g., indicated in the first message or in a previous message), without limitation.

[0509] Example 3:

[0510] This embodiment mainly describes the Option3 scheme described above.

[0511] For example, {Ry} = {1,2,4,8,16,32,64,128} or {1,4,8,16,32,64,128} or {2,4,8,16,32,64,128}, and the bit depth of the bitmap or the number of chips is |{Ry}| = 8 or 7, as shown in the following correspondence:

[0512] For example, {Ry} = {1,2,4,8,16,32,64,128} or {1,4,8,16,32,64,128} or {2,4,8,16,32,64,128}, and the bit depth of the bitmap or the number of chips is |{Ry}| = 8 or 7, Y = 2

[0513] R takes values ​​of 1 and 4, as shown in the following correspondence:

[0514] Alternatively, R can take the values ​​1 and 4, as shown in the following correspondence:

[0515] Alternatively, R can take the values ​​8 and 4, as shown in the following correspondence:

[0516] For example, {Ry} = {1,2,4,8,16,32,64,128} or {1,4,8,16,32,64,128} or {2,4,8,16,32,64,128}, and the bit depth of the bitmap or the number of chips is |{Ry}| = 8 or 7, Y = 2

[0517] R takes values ​​of 2 and 8, as shown in the following correspondence:

[0518] Alternatively, R can take the values ​​8 and 4, as shown in the following correspondence:

[0519] Alternatively, R can take the values ​​8 and 2, as shown in the following correspondence.

[0520] For example, {Ry} = {1,2,4,8,16,32,64,128} or {1,4,8,16,32,64,128} or {2,4,8,16,32,64,128}, and the bit depth of the bitmap or the number of chips is |{Ry}| = 8 or 7, Y = 3, and R takes values ​​of 1, 4, and 16, as shown in the following correspondence.

[0521] Alternatively, R can take the values ​​1, 4, and 16, as shown in the following correspondence.

[0522] Alternatively, R can take the values ​​2, 4, and 16, as shown in the following correspondence.

[0523] In some implementations, the above {Ry} = {1,2,4,8,16,32,64,128} or {1,4,8,16,32,64,128} or {2,4,8,16,32,64,128} refers to a specific sampling rate, such as 1.96MHz; or has a corresponding index, number, or identifier, such as 0 or 1;

[0524] In some implementations, the above {Ry} refers to multiple specific sampling rates, such as 1.96MHz and 2.48MHz; or it is predefined or preconfigured for the protocol.

[0525] For example, {Ry} = {1,2,4,8,16,32,64,128,256} or {1,4,8,16,32,64,128,256} or {2,4,8,16,32,64,128,256}, and the bit depth of the bitmap or the number of chips is |{Ry}| = 8 or 9, as shown in the following correspondence.

[0526] For example, {Ry} = {1,2,4,8,16,32,64,128,256} or {1,4,8,16,32,64,128,256} or {2,4,8,16,32,64,128,256}, and the bit depth of the bitmap or the number of chips is |{Ry}| = 8 or 9, Y = 2; R takes values ​​of 1 and 4, as shown in the following correspondence.

[0527] Alternatively, R can take the values ​​1 and 4, as shown in the following correspondence.

[0528] Alternatively, R can take the values ​​8 and 4, as shown in the following correspondence.

[0529] For example, {Ry} = {1,2,4,8,16,32,64,128,256} or {1,4,8,16,32,64,128,256} or {2,4,8,16,32,64,128,256}, and the bit depth of the bitmap or the number of chips is |{Ry}| = 8 or 9, Y = 2;

[0530] R takes values ​​of 2 and 8, as shown in the following correspondence.

[0531] Alternatively, R can take the values ​​8 and 4, as shown in the following correspondence.

[0532] Alternatively, R can take the values ​​8 and 2, as shown in the following correspondence.

[0533] For example, {Ry} = {1,2,4,8,16,32,64,128,256} or {1,4,8,16,32,64,128,256} or {2,4,8,16,32,64,128,256}, and the bit depth of the bitmap or the number of chips is |{Ry}| = 8 or 9, Y = 3;

[0534] R takes values ​​of 1, 4, and 16, as shown in the following correspondence.

[0535] Alternatively, R can take the values ​​1, 4, and 16, as shown in the following correspondence.

[0536] Alternatively, R can take the values ​​2, 4, and 16, as shown in the following correspondence.

[0537] In some implementations, the above {Ry} = {1,2,4,8,16,32,64,128,256} or {1,4,8,16,32,64,128,256} or {2,4,8,16,32,64,128,256} refers to a specific sampling rate, such as 2.48MHz; or has a corresponding index, number, or identifier, such as 1 or 0;

[0538] In some implementations, the above {Ry} refers to multiple specific sampling rates, such as 1.96MHz and 2.48MHz; or it is predefined or preconfigured for the protocol.

[0539] Example 4:

[0540] This embodiment protects against the possible {Ry} separately, and is not limited by Scheme 3.

[0541] In some implementations, {Ry} in this embodiment includes or indicates at least a portion of {1,2,4,8,16,32,64,128} or {1,4,8,16,32,64,128} or {2,4,8,16,32,64,128}. The {Ry} is specific to a particular sampling rate, such as 1.96MHz; or the {Ry} has a corresponding index, number, or identifier, such as 0 or 1; or the aforementioned {Ry} is specific to multiple sampling rates, such as 1.96MHz and 2.48MHz; or the {Ry} is predefined or preconfigured by the protocol.

[0542] In some implementations, {Ry} in this embodiment includes or indicates at least a portion of {1,2,4,8,16,32,64,128,256} or {1,4,8,16,32,64,128,256} or {2,4,8,16,32,64,128,256}. The {Ry} is specific to a particular sampling rate, such as 2.48MHz; or the {Ry} has a corresponding index, number, or identifier, such as 1 or 0; or the aforementioned {Ry} is specific to multiple sampling rates, such as 1.96MHz and 2.48MHz; or the {Ry} is predefined or preconfigured by the protocol.

[0543] Example 5:

[0544] This embodiment primarily describes the D2R resource used to indicate msg3. The R mentioned below may or may not be indicated in the response; that is, R may or may not be part of the response. In one implementation, msg2 can be considered to indicate the D2R resource of msg3 in the following format.

[0545] For example, as shown in Figure 24, it can also be understood as shown in Figure 25.

[0546] In some implementations, Msg2 carries responses for N msg1s. In one implementation, these N responses are or correspond to random IDs (e.g., RN16) generated by the device and transmitted in Msg1, respectively for the N devices 0, 1, ..., 2 that sent msg1. N-1 .

[0547] R0 and Response0 correspond to device0, R1 and Response1 correspond to device1, and so on.

[0548] Note that this scheme can be combined with Schemes 1, 2, or 3 above. For example, the first information can also include a frequency domain information domain or a joint indication domain and / or Y. However, in one implementation, indicating Y may not be necessary. For example, the number of R value information is related to the number of responses, meaning the number of responses to msg1 contained in msg2 can also be considered Y. Alternatively, Y can be a fixed value.

[0549] The following example uses N=2, but can be extended to cases where N can be any value.

[0550] msg2 carries responses for the two msg1s, one for device0 and one for device1 that sent msg1.

[0551] Combination with Option 1:

[0552] msg2 also carries the number Y of R values ​​and the R value information. Then device0 and device1 correspond to R0 and R1 respectively, as shown in Figure 26.

[0553] Alternatively, as shown in Figure 27.

[0554] Alternatively, msg2 may also carry the number of R values ​​and the R value information, where the R value information is an index. Then device0 and device1 correspond to the R corresponding to R index0 = 1 and the R corresponding to R index1, respectively, as shown in Figure 28.

[0555] Alternatively, as shown in Figure 29.

[0556] Alternatively, msg2 may also carry the number of R values ​​and the range of R values ​​{Ry}, where the R value information is an index. Then device0 and device1 correspond to the R corresponding to R index0 = 1 and the R corresponding to R index1, respectively, as shown in Figures 30, 31, 32, or 33.

[0557] Combination with Option 2:

[0558] For example, the frequency domain information field or joint indication field carried in msg2 might have the following characteristics: any value in the frequency domain information field or joint indication field corresponds to a combination, which is a combination of the number of R values ​​and Y R values. This combination includes any combination of the number of R values ​​and Y R values; for example, Y might include at least a portion of 1 to 8 or at least a portion of 1 to 7, and the Y R values ​​might be contained in the set {1, 2, 4, 8, 16, 32, 64, 128, 256}. At least a portion of, for example, the Y values ​​of R contain at least a portion of the set {1,2,4,8,16,32,64,128,256} or {1,4,8,16,32,64,128,256} or {2,4,8,16,32,64,128,256} or {1,2,4,8,16,32,64,128} or {1,4,8,16,32,64,128} or {2,4,8,16,32,64,128}. Thus, the combinations can include any combination of values ​​from the aforementioned set when Y is 1; combinations of two values ​​from the aforementioned set when Y is 2; combinations of three values ​​from the aforementioned set when Y is 3; combinations of four values ​​from the aforementioned set when Y is 4; combinations of five values ​​from the aforementioned set when Y is 5; combinations of six values ​​from the aforementioned set when Y is 6; combinations of seven values ​​from the aforementioned set when Y is 7; and combinations of eight values ​​from the aforementioned set when Y is 8. It should be noted that the above combinations can include combinations where R takes values ​​other than 1 and 2. For example, 000 indicates that there is only one R with a value of 1.

[0559] For example, if the frequency domain information field or joint indicator field = 001, 1, or 2, it means that the R value is 1 or 4 respectively. Then device0 and device1 correspond to 1 and 4 respectively, as shown in Table 4 below:

[0560] Table 4:

[0561] For example, msg2 carries the number of R values, and the Y values ​​have corresponding R values. For example, Y includes at least a portion of 1 to 8 or at least a portion of 1 to 7, and the Y R values ​​contain at least a portion of the set {1,2,4,8,16,32,64,128,256}. For example, the Y R values ​​contain at least a portion of the sets {1,2,4,8,16,32,64,128,256}, {1,4,8,16,32,64,128,256}, {2,4,8,16,32,64,128,256}, {1,2,4,8,16,32,64,128}, {1,4,8,16,32,64,128}, or {2,4,8,16,32,64,128}. Thus, when Y is 1, Y can indicate or correspond to any value of R in the aforementioned set; when Y is 2, Y can indicate or correspond to two values ​​of R in the aforementioned set; when Y is 3, Y can indicate or correspond to three values ​​of R in the aforementioned set; when Y is 4, Y can indicate or correspond to four values ​​of R in the aforementioned set; when Y is 5, Y can indicate or correspond to five values ​​of R in the aforementioned set; when Y is 6, Y can indicate or correspond to six values ​​of R in the aforementioned set; when Y is 7, Y can indicate or correspond to seven values ​​of R in the aforementioned set; and when Y is 8, Y can indicate or correspond to eight values ​​of R in the aforementioned set. It should be noted that the above combinations can include combinations of R values ​​other than 1 and 2. For example, 000 indicates that there is only one R with a value of 1.

[0562] Assuming Y = 001, this indicates that R takes values ​​of 1 and 4 respectively. Device0 and Device1 then correspond to 1 and 4 respectively, as shown in Table 5 below:

[0563] Table 5:

[0564] Combination with Option 3:

[0565] For example, msg2 carries a bitmap corresponding to {Ry} or a string of chips.devices that correspond to R2=4 and R3=8, as shown in Figure 34.

[0566] For example, msg2 carries a bitmap corresponding to {Ry} or a string of chips.devices that correspond to R2=8 and R3=16, as shown in Figure 35.

[0567] For example, msg2 carries a bitmap corresponding to {Ry} or a string of chips.devices that correspond to R2=8 and R3=16, as shown in Figure 36.

[0568] It should be noted that the order of the different fields mentioned above is just an example and is not the only one; it may be changed.

[0569] Example 6:

[0570] This embodiment mainly describes the msg2 design format.

[0571] Msg2 contains a response to msg1 (e.g., a random ID), where the response can also configure or indicate the resources of Msg3 (which can also be considered a D2R scheduling message, or the first message in 1).

[0572] In some implementations, msg2 contains multiple scheduling messages, and each scheduling message is for a different msg1 / response (e.g., random ID). In this case, the design of the first message can be Scheme 1. For example, as shown in Figure 37, each scheduling message carries the corresponding R value information (e.g., R value or R index).

[0573] Alternatively, as shown in Figure 38 or Figure 39.

[0574] In some implementations, msg2 may also carry the number of R value information (with a value of Y) and the number of responses to AIoT msg1, thereby determining the number of scheduling messages. Alternatively, it can indirectly indicate Y by carrying "whether it is the last response message". Or, it can determine the number of scheduling messages by indicating "whether there is scheduling information for D2R" and indicating the corresponding R value information (e.g., R value or R index).

[0575] Correspondingly, by reading these fields, the device can determine how many scheduling information and / or R value information there are, and or, its own corresponding scheduling information and / or R value information.

[0576] The design format of the response information is shown in Figure 7. Each response information includes the value information of R, or the index of R.

[0577] In some implementations, msg2 contains responses to multiple msg1s (e.g., random IDs) and also configures or indicates the resources of Msg3 (which can also be considered a D2R scheduling information, or the first information in 1). That is, the response and scheduling information / first information are separate.

[0578] For example, as shown in Figure 40, the D2R scheduling information includes a shared scheduling information portion and a dedicated scheduling information portion. The shared scheduling information portion contains the first information, which can be designed as either scheme two or three. For example, the shared scheduling information portion carries the frequency domain information field or joint indication field from scheme two, allowing the device to determine the corresponding Y and R. Alternatively, the shared scheduling information portion carries the Y from scheme two, allowing the device to determine the corresponding R. Furthermore, these determined R values ​​are sequentially applied to the subsequent N dedicated scheduling information portions.

[0579] The design format of the response information is shown in Figure 8. The shared scheduling information includes the number of R value information and one or more R value information, as well as multiple dedicated scheduling information. These multiple R value information correspond to multiple dedicated scheduling information as shown by the arrows.

[0580] In some implementations, the dedicated scheduling information portion includes the first information, thus similar to the first example in Embodiment Six, in which case the design of the first information adopts Scheme One. Each dedicated scheduling information portion includes corresponding R value information (e.g., R value or R index).

[0581] The design format of the response information is shown in Figure 9. Each dedicated scheduling information in Figure 9 includes the corresponding R value information. Figure 9 only shows R and does not care about other parts. Figure 7 may contain other content besides scheduling information, without restriction.

[0582] In this embodiment, by indicating or configuring a small frequency shift in D2R, the reader and device can have a consistent understanding of FDM resources, thereby supporting FDMA multi-device access and reducing access latency.

[0583] The information sending method provided in this application can be executed by an information sending device. This application uses an information sending device executing the information sending method as an example to illustrate the information sending device provided in this application.

[0584] The information receiving method provided in this application can be executed by an information receiving device. This application uses an information receiving device executing the information receiving method as an example to illustrate the information receiving device provided in this application.

[0585] This application provides an information transmitting device. As an example, the information transmitting device may be a communication device or a component within a communication device, such as a chip. The communication device may be a terminal, a network-side device, or a server, etc. Exemplarily, the terminal may include, but is not limited to, the type of terminal 11 listed above, and the network-side device may include, but is not limited to, the type of network-side device 12 listed above. This application does not impose specific limitations.

[0586] This application provides an information receiving device. As an example, the information receiving device may be a communication device or a component within a communication device, such as a chip. The communication device may be a terminal, a network-side device, or a server, etc. Exemplarily, the terminal may include, but is not limited to, the type of terminal 11 listed above, and the network-side device may include, but is not limited to, the type of network-side device 12 listed above. This application does not impose specific limitations.

[0587] An information transmitting or receiving device includes a receiving module, a transmitting module, and a processing module. These modules can be implemented in software or hardware. When implemented in hardware, the processing module can be implemented by a processor. For example, the processor can include general-purpose processors, special-purpose processors, etc., such as central processing units (CPUs), microprocessors, digital signal processors (DSPs), artificial intelligence (AI) processors, graphics processing units (GPUs), application-specific integrated circuits (ASICs), network processors (NPs), field-programmable gate arrays (FPGAs), or other programmable logic devices, gate circuits, transistors, discrete hardware components, etc. The receiving and transmitting modules can be implemented by a communication interface, which can include one or more of the following: transceivers, pins, circuits, buses, radio frequency units, etc.

[0588] Specifically, referring to Figure 41, when the information transmitting device is a reader or a component within a reader, the information transmitting device 4100 includes:

[0589] The sending module 4101 is configured to send first information to the device, wherein the first information includes at least one of the following:

[0590] The first indication information is used to indicate Y devices to the D2R resource of the reader / writer; the second indication information is used to indicate the information set; the third indication information is used to indicate the value of Y; and the fourth indication information is used to indicate the maximum value of Y. The first indication information belongs to the information set, and Y is a positive integer.

[0591] The first indication information includes at least one of the following: information for indicating D2R frequency domain resources, and information for indicating D2R time domain resources;

[0592] The information used to indicate D2R frequency domain resources includes at least one of the following: R, frequency offset, and frequency domain location information, wherein R includes or represents the number of repetitions, repetition parameters, or repetition factors;

[0593] The information used to indicate D2R time-domain resources includes at least one of the following: time-domain location information and time delay information;

[0594] The information set includes at least one of the following: an information set for indicating D2R frequency domain resources, and an information set for indicating D2R time domain resources.

[0595] Optionally, the first information satisfies at least one of the following:

[0596] When the D2R resource is used to transmit message 1 or message 3, or when the D2R resource is a D2R resource corresponding to the identification information of the device, the first information includes the third indication information.

[0597] When the frequency division multiplexing (FDM) resources or time division multiplexing (TDM) resources are D2R resources of multiple devices, the first information includes the first indication information or the third indication information, wherein the Y D2R resources indicated by the first indication information are D2R resources in the FDM resources or the TDM resources, or the D2R resources corresponding to the value of Y indicated by the third indication information are D2R resources in the FDM resources or the TDM resources.

[0598] In the case that the D2R resource is a D2R resource corresponding to multicast R2D transmission, or the D2R resource corresponds to multiple devices that have been successfully inventoried or successfully accessed, or the D2R resource corresponds to multiple specific devices, the first information includes the third indication information.

[0599] If the D2R resource is a D2R resource corresponding to unicast transmission, or the D2R resource corresponds to a device that has been successfully inventoried or successfully accessed, or the D2R resource corresponds to a specific device, the first information does not include the third indication information, or the value of Y is 1.

[0600] Optionally, the value of Y is equal to the number of messages 1 corresponding to message 2 sent by the reader; or,

[0601] The value of Y is equal to the number of D2R resources corresponding to the R2D transmission sent by the reader; or,

[0602] The value of Y is equal to the number of devices corresponding to the R2D transmission sent by the reader; or,

[0603] The value of Y is equal to the number of message 1s received by the reader; or,

[0604] The value of Y is equal to the number of responses carried in the R2D transmission sent by the reader, wherein the response is a response to message 1 of random access, or the response is a response to the D2R transmission received by the reader; or,

[0605] The value of Y is equal to the number of random IDs or random RN16 numbers carried in message 2 sent by the reader; or,

[0606] The value of Y includes at least one of the following: the number of D2R resources or locations in FDM, the number of D2R resources or locations in TDM; or

[0607] The value of Y is the number agreed upon in the protocol, or the value of Y is indicated by the reader during the inventory process; and the reader indicates to the device at least one of the following: whether the information for indicating D2R frequency domain resources or the information for indicating D2R time domain resources is valid or used, and whether the information for indicating D2R frequency domain resources or the information for indicating D2R time domain resources has an actual corresponding D2R resource.

[0608] Optionally, the first information may further indicate at least one of the following:

[0609] Is this the final response?

[0610] Is there a response?

[0611] Is this the last D2R scheduling information?

[0612] Whether it is the last piece of information used to indicate D2R frequency domain resources or the last piece of information used to indicate D2R time domain resources;

[0613] Does D2R have scheduling information?

[0614] Does information exist to indicate D2R frequency domain resources or D2R time domain resources?

[0615] Optionally, the value of Y is indicated by at least one of the following:

[0616] Is this the final response?

[0617] Is there a response?

[0618] Is this the last D2R scheduling information?

[0619] Whether it is the last piece of information used to indicate D2R frequency domain resources or the last piece of information used to indicate D2R time domain resources;

[0620] Does D2R have scheduling information?

[0621] Does information exist to indicate D2R frequency domain resources or D2R time domain resources?

[0622] Optionally, the information set indicated by the second indication information includes at least a portion of the information set agreed upon in the protocol.

[0623] Alternatively, if Y is greater than 1:

[0624] The Y D2R resources are D2R resources that can be used simultaneously; or

[0625] The Y D2R resources are coexistent; or

[0626] The Y D2R resources do not overlap; or

[0627] The interval between the Y D2R resources is greater than or equal to a preset value.

[0628] Optionally, the first indication information satisfies at least one of the following:

[0629] The first instruction information indicates the Y D2R resources in a first preset order;

[0630] The first value is the number of bits or chips corresponding to information indicating D2R frequency domain resources or information indicating D2R time domain resources; the second value is the number of chips corresponding to information indicating D2R frequency domain resources or information indicating D2R time domain resources. The first value is equal to one of the following: log2(My), log2(Ymax), log2(Y), and the second value is equal to one of the following: log2(My)*2*M, log2(Ymax)*2*M, log2(Y)*2*M, log2(My)*M, log2(Ymax)*M, log2(Y)*M.

[0631] The total number of bits or chips in the first indication information is a third value, or the total number of chips in the first indication information is a fourth value, wherein the third value is equal to one of the following: Y*log2(My), Y*log2(Ymax), Y*log2(Y), and the fourth value is equal to one of the following: Y*log2(My)*2*M, Y*log2(Ymax)*2*M, Y*log2(Y)*2*M, Y*log2(My)*M, Y*log2(Ymax)*M, Y*log2(Y)*M;

[0632] Wherein, My represents the number of values ​​corresponding to or included in the D2R resource range information, Ymax is the maximum value of Y, and M is the number of chips or the on / off keying OOK modulation order corresponding to one bit of the first indication information.

[0633] Optionally, if the first information includes the first indication information and also includes at least one of the second indication information and the third indication information, the order of the second indication information and the third indication information with the first indication information in the first information is a second preset order.

[0634] Optionally, the first information indicates at least two of the first indication information, the second indication information, and the third indication information in a joint indication manner.

[0635] Optionally, at least two of the first indication information, the second indication information, and the third indication information are indicated by the same index or identifier; or,

[0636] The first information includes second indication information, and the set of information indicated by the second indication information corresponds to the first indication information or the third indication information.

[0637] The first information includes the third indication information, and the value of Y indicated by the third indication information corresponds to the first indication information or the second indication information;

[0638] The first information includes the first indication information, and the first indication information corresponds to the second indication information or the third indication information.

[0639] Optionally, the first indication information indicates Y D2R resources via a bitmap, bit string, or chip string.

[0640] Optionally, the number of bits contained in the bitmap or the bit string is equal to Y, Ymax, or My, or the number of chips contained in the chip string is equal to Y or My, where My represents the number of information items corresponding to the information set, and Ymax is the maximum value of Y; and / or

[0641] One bit in the bitmap or the bit string corresponds to or indicates at least one piece of information in the information set used to indicate D2R frequency domain resources or D2R time domain resources; or, one chip in the chip string corresponds to or indicates at least one piece of information in the information set used to indicate D2R frequency domain resources or D2R time domain resources.

[0642] Optionally, the second indication information is an indication information set via a bitmap, bit string, or chip string;

[0643] Wherein, a bit in the bitmap or the bit string indicates at least one piece of information in the information set for indicating D2R frequency domain resources or for indicating D2R time domain resources; or, a chip in the chip string indicates at least one piece of information in the information set for indicating D2R frequency domain resources or for indicating D2R time domain resources.

[0644] Optionally, the information set indicated by the second indication information includes a first information set, the first information set including information indicating D2R resources that do not satisfy the first relation, and the Y D2R resources indicated by the first indication information are D2R resources that satisfy the first relation;

[0645] The first relationship includes:

[0646] Multiple D2R resources are D2R resources that can be used simultaneously; or

[0647] Multiple D2R resources can coexist; or

[0648] Multiple D2R resources do not overlap; or

[0649] The interval between multiple D2R resources is greater than or equal to the preset value.

[0650] Optionally, information indicating D2R frequency domain resources or information indicating D2R time domain resources corresponds to a second piece of information, the second piece of information including one of the following:

[0651] Message 1;

[0652] The random ID or RN16 number transmitted in message 1;

[0653] Information about the D2R resources in transmission message 1;

[0654] The response to message 1;

[0655] Equipment identification.

[0656] Optionally, the message 2 sent by the reader carries Y pieces of second information, wherein the Y pieces of information for indicating D2R frequency domain resources or for indicating D2R time domain resources correspond to the Y pieces of second information respectively;

[0657] Wherein, the order of the Y pieces of information indicating D2R frequency domain resources or the order of the Y pieces of second information in message 2 is the same as the order of the second pieces of information; or

[0658] The order of the Y pieces of information used to indicate D2R frequency domain resources or the Y pieces of information used to indicate D2R time domain resources is the same as the order of the values ​​of the Y pieces of second information.

[0659] Optionally, the message 2 sent by the reader includes responses to Y messages 1, with the first indication information carried in the responses to the Y messages 1; or,

[0660] The first indication information is carried in the shared scheduling information in message 2 sent by the reader / writer, wherein the shared scheduling information schedules Y devices or indicates Y D2R resources; or

[0661] The message 2 sent by the reader includes Y scheduling information, the first indication information is carried in the Y scheduling information, and the Y scheduling information respectively schedules Y devices.

[0662] Optionally, if the D2R resource is the frequency domain resource of message 1, the frequency domain resource of the D2R resource of message 3 is the same as the frequency domain resource of message 1.

[0663] Optionally, the frequency domain resources of the D2R resources in the default message 3 are the same as those in the frequency domain resources of the message 1; or,

[0664] The reader indicates to the device that the first information corresponding to message 3 is the same as the first information corresponding to message 1; or...

[0665] When the first information is the control information corresponding to message 1, the reader indicates or configures the control information corresponding to message 3 to the device to be the same as the control information corresponding to message 1.

[0666] Optionally, the Y D2R resources include FDM resources, and the FDM resources include at least one of the following:

[0667] At least one or more FDM resources in the time domain;

[0668] All or part of the FDM resources on at least one time-domain resource indicated by the paging message or R2D transmission that triggers message 1;

[0669] All or part of the FDM resources on at least one time-domain resource indicated by the R2D transmission of trigger message 3;

[0670] All or part of the FDM resources on at least one time-domain resource indicated by message 2;

[0671] All or part of the FDM resources on at least one time-domain resource in the transmission process or session between the reader and at least one device;

[0672] At least one FDM resource corresponding to a first time-domain resource.

[0673] Optionally, the Y D2R resources include TDM resources, and the TDM resources include at least one of the following:

[0674] At least one frequency domain resource, including all or part of the TDM resources;

[0675] All or part of the TDM resources on at least one frequency domain resource indicated by the paging message or R2D transmission that triggers message 1;

[0676] All or part of the TDM resources on at least one frequency domain resource indicated by the R2D transmission of trigger message 3;

[0677] All or part of the TDM resources on at least one frequency domain resource indicated by message 2 of the random access;

[0678] All or part of the TDM resources on at least one frequency domain resource in the transmission process or session between the reader and at least one device;

[0679] At least one TDM resource corresponding to a first frequency domain resource.

[0680] The aforementioned information transmission device can improve the transmission performance of the equipment.

[0681] The transmission device provided in this application embodiment can implement the various processes implemented in the method embodiment shown in FIG3 and achieve the same technical effect. To avoid repetition, it will not be described again here.

[0682] Specifically, referring to Figure 42, when the information receiving device is a device or a component of a device, the information receiving device 4200 includes:

[0683] Processing module 4201 is used to acquire the first information;

[0684] The processing module 4201 is also used to determine device-to-reader (D2R) resources based on the first information;

[0685] Wherein, the first information includes at least one of the following:

[0686] The first indication information is used to indicate Y devices to the D2R resource of the reader / writer; the second indication information is used to indicate the information set; the third indication information is used to indicate the value of Y; and the fourth indication information is used to indicate the maximum value of Y. The first indication information belongs to the information set, and Y is a positive integer.

[0687] The first indication information includes at least one of the following: information for indicating D2R frequency domain resources, and information for indicating D2R time domain resources;

[0688] The information used to indicate D2R frequency domain resources includes at least one of the following: R, frequency offset, and frequency domain location information, wherein R includes or represents the number of repetitions, repetition parameters, or repetition factors;

[0689] The information used to indicate D2R time-domain resources includes at least one of the following: time-domain location information and time delay information;

[0690] The information set includes at least one of the following: an information set for indicating D2R frequency domain resources, and an information set for indicating D2R time domain resources.

[0691] Optionally, the first information satisfies at least one of the following:

[0692] When the D2R resource is used to transmit message 1 or message 3, or when the D2R resource is a D2R resource corresponding to the identification information of the device, the first information includes the third indication information.

[0693] When the frequency division multiplexing (FDM) resources or time division multiplexing (TDM) resources are D2R resources of multiple devices, the first information includes the first indication information or the third indication information, wherein the Y D2R resources indicated by the first indication information are D2R resources in the FDM resources or the TDM resources, or the D2R resources corresponding to the value of Y indicated by the third indication information are D2R resources in the FDM resources or the TDM resources.

[0694] In the case that the D2R resource is a D2R resource corresponding to multicast R2D transmission, or the D2R resource corresponds to multiple devices that have been successfully inventoried or successfully accessed, or the D2R resource corresponds to multiple specific devices, the first information includes the third indication information.

[0695] If the D2R resource is a D2R resource corresponding to unicast transmission, or the D2R resource corresponds to a device that has been successfully inventoried or successfully accessed, or the D2R resource corresponds to a specific device, the first information does not include the third indication information, or the value of Y is 1.

[0696] Optionally, the value of Y is equal to the number of messages 1 corresponding to message 2 sent by the reader; or,

[0697] The value of Y is equal to the number of D2R resources corresponding to the R2D transmission sent by the reader; or,

[0698] The value of Y is equal to the number of devices corresponding to the R2D transmission sent by the reader; or,

[0699] The value of Y is equal to the number of message 1s received by the reader; or,

[0700] The value of Y is equal to the number of responses carried in the R2D transmission sent by the reader, wherein the response is a response to message 1 of random access, or the response is a response to the D2R transmission received by the reader; or,

[0701] The value of Y is equal to the number of random IDs or random RN16 numbers carried in message 2 sent by the reader; or,

[0702] The value of Y includes at least one of the following: the number of D2R resources or locations in FDM, the number of D2R resources or locations in TDM; or

[0703] The value of Y is the number agreed upon in the protocol, or the value of Y is indicated by the reader during the inventory process; and the reader indicates to the device at least one of the following: whether the information for indicating D2R frequency domain resources or the information for indicating D2R time domain resources is valid or used, and whether the information for indicating D2R frequency domain resources or the information for indicating D2R time domain resources has an actual corresponding D2R resource.

[0704] Optionally, the first information may further indicate at least one of the following:

[0705] Is this the final response?

[0706] Is there a response?

[0707] Is this the last D2R scheduling information?

[0708] Whether it is the last piece of information used to indicate D2R frequency domain resources or the last piece of information used to indicate D2R time domain resources;

[0709] Does D2R have scheduling information?

[0710] Does information exist to indicate D2R frequency domain resources or D2R time domain resources?

[0711] Optionally, the value of Y is indicated by at least one of the following:

[0712] Is this the final response?

[0713] Is there a response?

[0714] Is this the last D2R scheduling information?

[0715] Whether it is the last piece of information used to indicate D2R frequency domain resources or the last piece of information used to indicate D2R time domain resources;

[0716] Does D2R have scheduling information?

[0717] Does information exist to indicate D2R frequency domain resources or D2R time domain resources?

[0718] Optionally, the information set indicated by the second indication information includes at least a portion of the information set agreed upon in the protocol.

[0719] Alternatively, if Y is greater than 1:

[0720] The Y D2R resources are D2R resources that can be used simultaneously; or

[0721] The Y D2R resources are coexistent; or

[0722] The Y D2R resources do not overlap; or

[0723] The interval between the Y D2R resources is greater than or equal to a preset value.

[0724] Optionally, the first indication information satisfies at least one of the following:

[0725] The first instruction information indicates the Y D2R resources in a first preset order;

[0726] The first value is the number of bits or chips corresponding to information indicating D2R frequency domain resources or information indicating D2R time domain resources; the second value is the number of chips corresponding to information indicating D2R frequency domain resources or information indicating D2R time domain resources. The first value is equal to one of the following: log2(My), log2(Ymax), log2(Y), and the second value is equal to one of the following: log2(My)*2*M, log2(Ymax)*2*M, log2(Y)*2*M, log2(My)*M, log2(Ymax)*M, log2(Y)*M.

[0727] The total number of bits or chips in the first indication information is a third value, or the total number of chips in the first indication information is a fourth value, wherein the third value is equal to one of the following: Y*log2(My), Y*log2(Ymax), Y*log2(Y), and the fourth value is equal to one of the following: Y*log2(My)*2*M, Y*log2(Ymax)*2*M, Y*log2(Y)*2*M, Y*log2(My)*M, Y*log2(Ymax)*M, Y*log2(Y)*M;

[0728] Wherein, My represents the number of values ​​corresponding to or included in the D2R resource range information, Ymax is the maximum value of Y, and M is the number of chips or the on / off keying OOK modulation order corresponding to one bit of the first indication information.

[0729] Optionally, if the first information includes the first indication information and also includes at least one of the second indication information and the third indication information, the order of the second indication information and the third indication information with the first indication information in the first information is a second preset order.

[0730] Optionally, the first information indicates at least two of the first indication information, the second indication information, and the third indication information in a joint indication manner.

[0731] Optionally, at least two of the first indication information, the second indication information, and the third indication information are indicated by the same index or identifier; or,

[0732] The first information includes second indication information, and the set of information indicated by the second indication information corresponds to the first indication information or the third indication information.

[0733] The first information includes the third indication information, and the value of Y indicated by the third indication information corresponds to the first indication information or the second indication information;

[0734] The first information includes the first indication information, and the first indication information corresponds to the second indication information or the third indication information.

[0735] Optionally, the first indication information indicates Y D2R resources via a bitmap, bit string, or chip string.

[0736] Optionally, the number of bits contained in the bitmap or the bit string is equal to Y, Ymax, or My, or the number of chips contained in the chip string is equal to Y or My, where My represents the number of information items corresponding to the information set, and Ymax is the maximum value of Y; and / or

[0737] One bit in the bitmap or the bit string corresponds to or indicates at least one piece of information in the information set used to indicate D2R frequency domain resources or D2R time domain resources; or, one chip in the chip string corresponds to or indicates at least one piece of information in the information set used to indicate D2R frequency domain resources or D2R time domain resources.

[0738] Optionally, the second indication information is an indication information set via a bitmap, bit string, or chip string;

[0739] Wherein, a bit in the bitmap or the bit string indicates at least one piece of information in the information set for indicating D2R frequency domain resources or for indicating D2R time domain resources; or, a chip in the chip string indicates at least one piece of information in the information set for indicating D2R frequency domain resources or for indicating D2R time domain resources.

[0740] Optionally, the information set indicated by the second indication information includes a first information set, the first information set including information indicating D2R resources that do not satisfy the first relation, and the Y D2R resources indicated by the first indication information are D2R resources that satisfy the first relation;

[0741] The first relationship includes:

[0742] Multiple D2R resources are D2R resources that can be used simultaneously; or

[0743] Multiple D2R resources can coexist; or

[0744] Multiple D2R resources do not overlap; or

[0745] The interval between multiple D2R resources is greater than or equal to the preset value.

[0746] Optionally, information indicating D2R frequency domain resources or information indicating D2R time domain resources corresponds to a second piece of information, the second piece of information including one of the following:

[0747] Message 1;

[0748] The random ID or RN16 number transmitted in message 1;

[0749] Information about the D2R resources in transmission message 1;

[0750] The response to message 1;

[0751] Equipment identification.

[0752] Optionally, the message 2 sent by the reader carries Y pieces of second information, wherein the Y pieces of information for indicating D2R frequency domain resources or for indicating D2R time domain resources correspond to the Y pieces of second information respectively;

[0753] Wherein, the order of the Y pieces of information indicating D2R frequency domain resources or the order of the Y pieces of second information in message 2 is the same as the order of the second pieces of information; or

[0754] The order of the Y pieces of information used to indicate D2R frequency domain resources or the Y pieces of information used to indicate D2R time domain resources is the same as the order of the values ​​of the Y pieces of second information.

[0755] Optionally, the message 2 sent by the reader includes responses to Y messages 1, with the first indication information carried in the responses to the Y messages 1; or,

[0756] The first indication information is carried in the shared scheduling information in message 2 sent by the reader / writer, wherein the shared scheduling information schedules Y devices or indicates Y D2R resources; or

[0757] The message 2 sent by the reader includes Y scheduling information, the first indication information is carried in the Y scheduling information, and the Y scheduling information respectively schedules Y devices.

[0758] Optionally, if the D2R resource is the frequency domain resource of message 1, the frequency domain resource of the D2R resource of message 3 is the same as the frequency domain resource of message 1.

[0759] Optionally, the frequency domain resources of the D2R resources in the default message 3 are the same as those in the frequency domain resources of the message 1; or,

[0760] The reader indicates to the device that the first information corresponding to message 3 is the same as the first information corresponding to message 1; or...

[0761] When the first information is the control information corresponding to message 1, the reader indicates or configures the control information corresponding to message 3 to the device to be the same as the control information corresponding to message 1.

[0762] Optionally, the Y D2R resources include FDM resources, and the FDM resources include at least one of the following:

[0763] At least one or more FDM resources in the time domain;

[0764] All or part of the FDM resources on at least one time-domain resource indicated by the paging message or R2D transmission that triggers message 1;

[0765] All or part of the FDM resources on at least one time-domain resource indicated by the R2D transmission of trigger message 3;

[0766] All or part of the FDM resources on at least one time-domain resource indicated by message 2;

[0767] All or part of the FDM resources on at least one time-domain resource in the transmission process or session between the reader and at least one device;

[0768] At least one FDM resource corresponding to a first time-domain resource.

[0769] Optionally, the Y D2R resources include TDM resources, and the TDM resources include at least one of the following:

[0770] At least one frequency domain resource, including all or part of the TDM resources;

[0771] All or part of the TDM resources on at least one frequency domain resource indicated by the paging message or R2D transmission that triggers message 1;

[0772] All or part of the TDM resources on at least one frequency domain resource indicated by the R2D transmission of trigger message 3;

[0773] All or part of the TDM resources on at least one frequency domain resource indicated by message 2 of the random access;

[0774] All or part of the TDM resources on at least one frequency domain resource in the transmission process or session between the reader and at least one device;

[0775] At least one TDM resource corresponding to a first frequency domain resource.

[0776] Optionally, the processing module is used for:

[0777] Based on the first information, Y pieces of information for indicating D2R frequency domain resources or information for indicating D2R time domain resources are determined, and a D2R resource corresponding to one of the pieces of information for indicating D2R frequency domain resources or information for indicating D2R time domain resources is randomly selected from them; or

[0778] Determine the information corresponding to the device among Y pieces of information indicating D2R frequency domain resources or D2R time domain resources, and determine the D2R resources based on the information indicating D2R frequency domain resources or D2R time domain resources.

[0779] The aforementioned information transmission device can improve the transmission performance of the equipment.

[0780] The transmission device provided in this application embodiment can implement the various processes implemented in the method embodiment shown in FIG10 and achieve the same technical effect. To avoid repetition, it will not be described again here.

[0781] As shown in Figure 43, this application embodiment also provides a communication device 4300, including a processor 4301 and a memory 4302. The memory 4302 stores a program or instructions that can run on the processor 4301. For example, when the communication device 4300 is a reader / writer, the program or instructions executed by the processor 4301 implement the various steps of the above-described information sending method embodiment and achieve the same technical effect. When the communication device 4300 is a device, the program or instructions executed by the processor 4301 implement the various steps of the above-described information receiving method embodiment and achieve the same technical effect. To avoid repetition, this will not be described again here.

[0782] This application also provides a terminal, including a processor and a communication interface, wherein the communication interface is coupled to the processor, and the processor is used to run programs or instructions to implement the steps in the method embodiments shown in FIG3 or FIG10. This terminal embodiment corresponds to the above-described terminal-side method embodiments, and all implementation processes and methods of the above-described method embodiments can be applied to this terminal embodiment and can achieve the same technical effect. The terminal can be the information sending device shown in FIG41 or the information receiving device shown in FIG42. Specifically, FIG44 is a schematic diagram of the hardware structure of a terminal implementing an embodiment of this application.

[0783] The terminal 4400 includes, but is not limited to, at least some of the following components: radio frequency unit 4401, network module 4402, audio output unit 4403, input unit 4404, sensor 4405, display unit 4406, user input unit 4407, interface unit 4408, memory 4409, and processor 4410.

[0784] Those skilled in the art will understand that terminal 4400 may also include a power supply (such as a battery) for powering various components. The power supply can be logically connected to processor 4410 through a power management system, thereby enabling functions such as charging, discharging, and power consumption management through the power management system. The terminal structure shown in Figure 44 does not constitute a limitation on the terminal. The terminal may include more or fewer components than shown, or combine certain components, or have different component arrangements, which will not be elaborated here.

[0785] It should be understood that, in this embodiment, the input unit 4404 may include a graphics processor 44041 and a microphone 44042. The graphics processor 44041 processes image data of still images or videos obtained by an image capture device (such as a camera) in video capture mode or image capture mode. The display unit 4406 may include a display panel 44061, which may be configured in the form of a liquid crystal display, an organic light-emitting diode, or the like. The user input unit 4407 includes at least one of a touch panel 44071 and other input devices 44072. The touch panel 44071 is also called a touch screen. The touch panel 44071 may include a touch detection device and a touch controller. Other input devices 44072 may include, but are not limited to, physical keyboards, function keys (such as volume control buttons, power buttons, etc.), trackballs, mice, and joysticks, which will not be described in detail here.

[0786] In this embodiment, after receiving downlink data from the network-side device, the radio frequency unit 4401 can transmit it to the processor 4410 for processing; in addition, the radio frequency unit 4401 can send uplink data to the network-side device. Typically, the radio frequency unit 4401 includes, but is not limited to, antennas, amplifiers, transceivers, couplers, low-noise amplifiers, duplexers, etc.

[0787] The memory 4409 can be used to store software programs or instructions, as well as various data. The memory 4409 may primarily include a first storage area for storing programs or instructions and a second storage area for storing data. The first storage area may store the operating system, application programs or instructions required for at least one function (such as sound playback, image playback, etc.). Furthermore, the memory 4409 may include volatile memory or non-volatile memory. The non-volatile memory may 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), static random access memory (SRAM), dynamic random access memory (DRAM), synchronous dynamic random access memory (SDRAM), double data rate synchronous dynamic random access memory (DDRSDRAM), enhanced synchronous dynamic random access memory (ESDRAM), synchronous link dynamic random access memory (SLDRAM), and direct memory bus RAM (DRRAM). The memory 4409 in this embodiment includes, but is not limited to, these and any other suitable types of memory.

[0788] Processor 4410 may include one or more processing units; optionally, processor 4410 integrates an application processor and a modem processor, wherein the application processor mainly handles operations involving the operating system, user interface, and applications, and the modem processor mainly handles wireless communication signals, such as a baseband processor. It is understood that the aforementioned modem processor may also not be integrated into processor 4410.

[0789] In one embodiment, the terminal is the reader / writer described above.

[0790] The radio frequency unit 440 is used to send first information to the device, wherein the first information includes at least one of the following:

[0791] The first indication information is used to indicate Y devices to the D2R resource of the reader / writer; the second indication information is used to indicate the information set; the third indication information is used to indicate the value of Y; and the fourth indication information is used to indicate the maximum value of Y. The first indication information belongs to the information set, and Y is a positive integer.

[0792] The first indication information includes at least one of the following: information for indicating D2R frequency domain resources, and information for indicating D2R time domain resources;

[0793] The information used to indicate D2R frequency domain resources includes at least one of the following: R, frequency offset, and frequency domain location information, wherein R includes or represents the number of repetitions, repetition parameters, or repetition factors;

[0794] The information used to indicate D2R time-domain resources includes at least one of the following: time-domain location information and time delay information;

[0795] The information set includes at least one of the following: an information set for indicating D2R frequency domain resources, and an information set for indicating D2R time domain resources.

[0796] Optionally, the first information satisfies at least one of the following:

[0797] When the D2R resource is used to transmit message 1 or message 3, or when the D2R resource is a D2R resource corresponding to the identification information of the device, the first information includes the third indication information.

[0798] When the frequency division multiplexing (FDM) resources or time division multiplexing (TDM) resources are D2R resources of multiple devices, the first information includes the first indication information or the third indication information, wherein the Y D2R resources indicated by the first indication information are D2R resources in the FDM resources or the TDM resources, or the D2R resources corresponding to the value of Y indicated by the third indication information are D2R resources in the FDM resources or the TDM resources.

[0799] In the case that the D2R resource is a D2R resource corresponding to multicast R2D transmission, or the D2R resource corresponds to multiple devices that have been successfully inventoried or successfully accessed, or the D2R resource corresponds to multiple specific devices, the first information includes the third indication information.

[0800] If the D2R resource is a D2R resource corresponding to unicast transmission, or the D2R resource corresponds to a device that has been successfully inventoried or successfully accessed, or the D2R resource corresponds to a specific device, the first information does not include the third indication information, or the value of Y is 1.

[0801] Optionally, the value of Y is equal to the number of messages 1 corresponding to message 2 sent by the reader; or,

[0802] The value of Y is equal to the number of D2R resources corresponding to the R2D transmission sent by the reader; or,

[0803] The value of Y is equal to the number of devices corresponding to the R2D transmission sent by the reader; or,

[0804] The value of Y is equal to the number of message 1s received by the reader; or,

[0805] The value of Y is equal to the number of responses carried in the R2D transmission sent by the reader, wherein the response is a response to message 1 of random access, or the response is a response to the D2R transmission received by the reader; or,

[0806] The value of Y is equal to the number of random IDs or random RN16 numbers carried in message 2 sent by the reader; or,

[0807] The value of Y includes at least one of the following: the number of D2R resources or locations in FDM, the number of D2R resources or locations in TDM; or

[0808] The value of Y is the number agreed upon in the protocol, or the value of Y is indicated by the reader during the inventory process; and the reader indicates to the device at least one of the following: whether the information for indicating D2R frequency domain resources or the information for indicating D2R time domain resources is valid or used, and whether the information for indicating D2R frequency domain resources or the information for indicating D2R time domain resources has an actual corresponding D2R resource.

[0809] Optionally, the first information may further indicate at least one of the following:

[0810] Is this the final response?

[0811] Is there a response?

[0812] Is this the last D2R scheduling information?

[0813] Whether it is the last piece of information used to indicate D2R frequency domain resources or the last piece of information used to indicate D2R time domain resources;

[0814] Does D2R have scheduling information?

[0815] Does information exist to indicate D2R frequency domain resources or D2R time domain resources?

[0816] Optionally, the value of Y is indicated by at least one of the following:

[0817] Is this the final response?

[0818] Is there a response?

[0819] Is this the last D2R scheduling information?

[0820] Whether it is the last piece of information used to indicate D2R frequency domain resources or the last piece of information used to indicate D2R time domain resources;

[0821] Does D2R have scheduling information?

[0822] Does information exist to indicate D2R frequency domain resources or D2R time domain resources?

[0823] Optionally, the information set indicated by the second indication information includes at least a portion of the information set agreed upon in the protocol.

[0824] Alternatively, if Y is greater than 1:

[0825] The Y D2R resources are D2R resources that can be used simultaneously; or

[0826] The Y D2R resources are coexistent; or

[0827] The Y D2R resources do not overlap; or

[0828] The interval between the Y D2R resources is greater than or equal to a preset value.

[0829] Optionally, the first indication information satisfies at least one of the following:

[0830] The first instruction information indicates the Y D2R resources in a first preset order;

[0831] The first value is the number of bits or chips corresponding to information indicating D2R frequency domain resources or information indicating D2R time domain resources; the second value is the number of chips corresponding to information indicating D2R frequency domain resources or information indicating D2R time domain resources. The first value is equal to one of the following: log2(My), log2(Ymax), log2(Y), and the second value is equal to one of the following: log2(My)*2*M, log2(Ymax)*2*M, log2(Y)*2*M, log2(My)*M, log2(Ymax)*M, log2(Y)*M.

[0832] The total number of bits or chips in the first indication information is a third value, or the total number of chips in the first indication information is a fourth value, wherein the third value is equal to one of the following: Y*log2(My), Y*log2(Ymax), Y*log2(Y), and the fourth value is equal to one of the following: Y*log2(My)*2*M, Y*log2(Ymax)*2*M, Y*log2(Y)*2*M, Y*log2(My)*M, Y*log2(Ymax)*M, Y*log2(Y)*M;

[0833] Wherein, My represents the number of values ​​corresponding to or included in the D2R resource range information, Ymax is the maximum value of Y, and M is the number of chips or the on / off keying OOK modulation order corresponding to one bit of the first indication information.

[0834] Optionally, if the first information includes the first indication information and also includes at least one of the second indication information and the third indication information, the order of the second indication information and the third indication information with the first indication information in the first information is a second preset order.

[0835] Optionally, the first information indicates at least two of the first indication information, the second indication information, and the third indication information in a joint indication manner.

[0836] Optionally, at least two of the first indication information, the second indication information, and the third indication information are indicated by the same index or identifier; or,

[0837] The first information includes second indication information, and the set of information indicated by the second indication information corresponds to the first indication information or the third indication information.

[0838] The first information includes the third indication information, and the value of Y indicated by the third indication information corresponds to the first indication information or the second indication information;

[0839] The first information includes the first indication information, and the first indication information corresponds to the second indication information or the third indication information.

[0840] Optionally, the first indication information indicates Y D2R resources via a bitmap, bit string, or chip string.

[0841] Optionally, the number of bits contained in the bitmap or the bit string is equal to Y, Ymax, or My, or the number of chips contained in the chip string is equal to Y or My, where My represents the number of information items corresponding to the information set, and Ymax is the maximum value of Y; and / or

[0842] One bit in the bitmap or the bit string corresponds to or indicates at least one piece of information in the information set used to indicate D2R frequency domain resources or D2R time domain resources; or, one chip in the chip string corresponds to or indicates at least one piece of information in the information set used to indicate D2R frequency domain resources or D2R time domain resources.

[0843] Optionally, the second indication information is an indication information set via a bitmap, bit string, or chip string;

[0844] Wherein, a bit in the bitmap or the bit string indicates at least one piece of information in the information set for indicating D2R frequency domain resources or for indicating D2R time domain resources; or, a chip in the chip string indicates at least one piece of information in the information set for indicating D2R frequency domain resources or for indicating D2R time domain resources.

[0845] Optionally, the information set indicated by the second indication information includes a first information set, the first information set including information indicating D2R resources that do not satisfy the first relation, and the Y D2R resources indicated by the first indication information are D2R resources that satisfy the first relation;

[0846] The first relationship includes:

[0847] Multiple D2R resources are D2R resources that can be used simultaneously; or

[0848] Multiple D2R resources can coexist; or

[0849] Multiple D2R resources do not overlap; or

[0850] The interval between multiple D2R resources is greater than or equal to the preset value.

[0851] Optionally, information indicating D2R frequency domain resources or information indicating D2R time domain resources corresponds to a second piece of information, the second piece of information including one of the following:

[0852] Message 1;

[0853] The random ID or RN16 number transmitted in message 1;

[0854] Information about the D2R resources in transmission message 1;

[0855] The response to message 1;

[0856] Equipment identification.

[0857] Optionally, the message 2 sent by the reader carries Y pieces of second information, wherein the Y pieces of information for indicating D2R frequency domain resources or for indicating D2R time domain resources correspond to the Y pieces of second information respectively;

[0858] Wherein, the order of the Y pieces of information indicating D2R frequency domain resources or the order of the Y pieces of second information in message 2 is the same as the order of the second pieces of information; or

[0859] The order of the Y pieces of information used to indicate D2R frequency domain resources or the Y pieces of information used to indicate D2R time domain resources is the same as the order of the values ​​of the Y pieces of second information.

[0860] Optionally, the message 2 sent by the reader includes responses to Y messages 1, with the first indication information carried in the responses to the Y messages 1; or,

[0861] The first indication information is carried in the shared scheduling information in message 2 sent by the reader / writer, wherein the shared scheduling information schedules Y devices or indicates Y D2R resources; or

[0862] The message 2 sent by the reader includes Y scheduling information, the first indication information is carried in the Y scheduling information, and the Y scheduling information respectively schedules Y devices.

[0863] Optionally, if the D2R resource is the frequency domain resource of message 1, the frequency domain resource of the D2R resource of message 3 is the same as the frequency domain resource of message 1.

[0864] Optionally, the frequency domain resources of the D2R resources in the default message 3 are the same as those in the frequency domain resources of the message 1; or,

[0865] The reader indicates to the device that the first information corresponding to message 3 is the same as the first information corresponding to message 1; or...

[0866] When the first information is the control information corresponding to message 1, the reader indicates or configures the control information corresponding to message 3 to the device to be the same as the control information corresponding to message 1.

[0867] Optionally, the Y D2R resources include FDM resources, and the FDM resources include at least one of the following:

[0868] At least one or more FDM resources in the time domain;

[0869] All or part of the FDM resources on at least one time-domain resource indicated by the paging message or R2D transmission that triggers message 1;

[0870] All or part of the FDM resources on at least one time-domain resource indicated by the R2D transmission of trigger message 3;

[0871] All or part of the FDM resources on at least one time-domain resource indicated by message 2;

[0872] All or part of the FDM resources on at least one time-domain resource in the transmission process or session between the reader and at least one device;

[0873] At least one FDM resource corresponding to a first time-domain resource.

[0874] Optionally, the Y D2R resources include TDM resources, and the TDM resources include at least one of the following:

[0875] At least one frequency domain resource, including all or part of the TDM resources;

[0876] All or part of the TDM resources on at least one frequency domain resource indicated by the paging message or R2D transmission that triggers message 1;

[0877] All or part of the TDM resources on at least one frequency domain resource indicated by the R2D transmission of trigger message 3;

[0878] All or part of the TDM resources on at least one frequency domain resource indicated by message 2 of the random access;

[0879] All or part of the TDM resources on at least one frequency domain resource in the transmission process or session between the reader and at least one device;

[0880] At least one TDM resource corresponding to a first frequency domain resource.

[0881] In another embodiment, the device described above is exemplified as the terminal described above:

[0882] Processor 4410 is used to acquire first information and determine device-to-reader (D2R) resources based on the first information;

[0883] Wherein, the first information includes at least one of the following:

[0884] The first indication information is used to indicate Y devices to the D2R resource of the reader / writer; the second indication information is used to indicate the information set; the third indication information is used to indicate the value of Y; and the fourth indication information is used to indicate the maximum value of Y. The first indication information belongs to the information set, and Y is a positive integer.

[0885] The first indication information includes at least one of the following: information for indicating D2R frequency domain resources, and information for indicating D2R time domain resources;

[0886] The information used to indicate D2R frequency domain resources includes at least one of the following: R, frequency offset, and frequency domain location information, wherein R includes or represents the number of repetitions, repetition parameters, or repetition factors;

[0887] The information used to indicate D2R time-domain resources includes at least one of the following: time-domain location information and time delay information;

[0888] The information set includes at least one of the following: an information set for indicating D2R frequency domain resources, and an information set for indicating D2R time domain resources.

[0889] Optionally, the first information satisfies at least one of the following:

[0890] When the D2R resource is used to transmit message 1 or message 3, or when the D2R resource is a D2R resource corresponding to the identification information of the device, the first information includes the third indication information.

[0891] When the frequency division multiplexing (FDM) resources or time division multiplexing (TDM) resources are D2R resources of multiple devices, the first information includes the first indication information or the third indication information, wherein the Y D2R resources indicated by the first indication information are D2R resources in the FDM resources or the TDM resources, or the D2R resources corresponding to the value of Y indicated by the third indication information are D2R resources in the FDM resources or the TDM resources.

[0892] In the case that the D2R resource is a D2R resource corresponding to multicast R2D transmission, or the D2R resource corresponds to multiple devices that have been successfully inventoried or successfully accessed, or the D2R resource corresponds to multiple specific devices, the first information includes the third indication information.

[0893] If the D2R resource is a D2R resource corresponding to unicast transmission, or the D2R resource corresponds to a device that has been successfully inventoried or successfully accessed, or the D2R resource corresponds to a specific device, the first information does not include the third indication information, or the value of Y is 1.

[0894] Optionally, the value of Y is equal to the number of messages 1 corresponding to message 2 sent by the reader; or,

[0895] The value of Y is equal to the number of D2R resources corresponding to the R2D transmission sent by the reader; or,

[0896] The value of Y is equal to the number of devices corresponding to the R2D transmission sent by the reader; or,

[0897] The value of Y is equal to the number of message 1s received by the reader; or,

[0898] The value of Y is equal to the number of responses carried in the R2D transmission sent by the reader, wherein the response is a response to message 1 of random access, or the response is a response to the D2R transmission received by the reader; or,

[0899] The value of Y is equal to the number of random IDs or random RN16 numbers carried in message 2 sent by the reader; or,

[0900] The value of Y includes at least one of the following: the number of D2R resources or locations in FDM, the number of D2R resources or locations in TDM; or

[0901] The value of Y is the number agreed upon in the protocol, or the value of Y is indicated by the reader during the inventory process; and the reader indicates to the device at least one of the following: whether the information for indicating D2R frequency domain resources or the information for indicating D2R time domain resources is valid or used, and whether the information for indicating D2R frequency domain resources or the information for indicating D2R time domain resources has an actual corresponding D2R resource.

[0902] Optionally, the first information may further indicate at least one of the following:

[0903] Is this the final response?

[0904] Is there a response?

[0905] Is this the last D2R scheduling information?

[0906] Whether it is the last piece of information used to indicate D2R frequency domain resources or the last piece of information used to indicate D2R time domain resources;

[0907] Does D2R have scheduling information?

[0908] Does information exist to indicate D2R frequency domain resources or D2R time domain resources?

[0909] Optionally, the value of Y is indicated by at least one of the following:

[0910] Is this the final response?

[0911] Is there a response?

[0912] Is this the last D2R scheduling information?

[0913] Whether it is the last piece of information used to indicate D2R frequency domain resources or the last piece of information used to indicate D2R time domain resources;

[0914] Does D2R have scheduling information?

[0915] Does information exist to indicate D2R frequency domain resources or D2R time domain resources?

[0916] Optionally, the information set indicated by the second indication information includes at least a portion of the information set agreed upon in the protocol.

[0917] Alternatively, if Y is greater than 1:

[0918] The Y D2R resources are D2R resources that can be used simultaneously; or

[0919] The Y D2R resources are coexistent; or

[0920] The Y D2R resources do not overlap; or

[0921] The interval between the Y D2R resources is greater than or equal to a preset value.

[0922] Optionally, the first indication information satisfies at least one of the following:

[0923] The first instruction information indicates the Y D2R resources in a first preset order;

[0924] The first value is the number of bits or chips corresponding to information indicating D2R frequency domain resources or information indicating D2R time domain resources; the second value is the number of chips corresponding to information indicating D2R frequency domain resources or information indicating D2R time domain resources. The first value is equal to one of the following: log2(My), log2(Ymax), log2(Y), and the second value is equal to one of the following: log2(My)*2*M, log2(Ymax)*2*M, log2(Y)*2*M, log2(My)*M, log2(Ymax)*M, log2(Y)*M.

[0925] The total number of bits or chips in the first indication information is a third value, or the total number of chips in the first indication information is a fourth value, wherein the third value is equal to one of the following: Y*log2(My), Y*log2(Ymax), Y*log2(Y), and the fourth value is equal to one of the following: Y*log2(My)*2*M, Y*log2(Ymax)*2*M, Y*log2(Y)*2*M, Y*log2(My)*M, Y*log2(Ymax)*M, Y*log2(Y)*M;

[0926] Wherein, My represents the number of values ​​corresponding to or included in the D2R resource range information, Ymax is the maximum value of Y, and M is the number of chips or the on / off keying OOK modulation order corresponding to one bit of the first indication information.

[0927] Optionally, if the first information includes the first indication information and also includes at least one of the second indication information and the third indication information, the order of the second indication information and the third indication information with the first indication information in the first information is a second preset order.

[0928] Optionally, the first information indicates at least two of the first indication information, the second indication information, and the third indication information in a joint indication manner.

[0929] Optionally, at least two of the first indication information, the second indication information, and the third indication information are indicated by the same index or identifier; or,

[0930] The first information includes second indication information, and the set of information indicated by the second indication information corresponds to the first indication information or the third indication information.

[0931] The first information includes the third indication information, and the value of Y indicated by the third indication information corresponds to the first indication information or the second indication information;

[0932] The first information includes the first indication information, and the first indication information corresponds to the second indication information or the third indication information.

[0933] Optionally, the first indication information indicates Y D2R resources via a bitmap, bit string, or chip string.

[0934] Optionally, the number of bits contained in the bitmap or the bit string is equal to Y, Ymax, or My, or the number of chips contained in the chip string is equal to Y or My, where My represents the number of information items corresponding to the information set, and Ymax is the maximum value of Y; and / or

[0935] One bit in the bitmap or the bit string corresponds to or indicates at least one piece of information in the information set used to indicate D2R frequency domain resources or D2R time domain resources; or, one chip in the chip string corresponds to or indicates at least one piece of information in the information set used to indicate D2R frequency domain resources or D2R time domain resources.

[0936] Optionally, the second indication information is an indication information set via a bitmap, bit string, or chip string;

[0937] Wherein, a bit in the bitmap or the bit string indicates at least one piece of information in the information set for indicating D2R frequency domain resources or for indicating D2R time domain resources; or, a chip in the chip string indicates at least one piece of information in the information set for indicating D2R frequency domain resources or for indicating D2R time domain resources.

[0938] Optionally, the information set indicated by the second indication information includes a first information set, the first information set including information indicating D2R resources that do not satisfy the first relation, and the Y D2R resources indicated by the first indication information are D2R resources that satisfy the first relation;

[0939] The first relationship includes:

[0940] Multiple D2R resources are D2R resources that can be used simultaneously; or

[0941] Multiple D2R resources can coexist; or

[0942] Multiple D2R resources do not overlap; or

[0943] The interval between multiple D2R resources is greater than or equal to the preset value.

[0944] Optionally, information indicating D2R frequency domain resources or information indicating D2R time domain resources corresponds to a second piece of information, the second piece of information including one of the following:

[0945] Message 1;

[0946] The random ID or RN16 number transmitted in message 1;

[0947] Information about the D2R resources in transmission message 1;

[0948] The response to message 1;

[0949] Equipment identification.

[0950] Optionally, the message 2 sent by the reader carries Y pieces of second information, wherein the Y pieces of information for indicating D2R frequency domain resources or for indicating D2R time domain resources correspond to the Y pieces of second information respectively;

[0951] Wherein, the order of the Y pieces of information indicating D2R frequency domain resources or the order of the Y pieces of second information in message 2 is the same as the order of the second pieces of information; or

[0952] The order of the Y pieces of information used to indicate D2R frequency domain resources or the Y pieces of information used to indicate D2R time domain resources is the same as the order of the values ​​of the Y pieces of second information.

[0953] Optionally, the message 2 sent by the reader includes responses to Y messages 1, with the first indication information carried in the responses to the Y messages 1; or,

[0954] The first indication information is carried in the shared scheduling information in message 2 sent by the reader / writer, wherein the shared scheduling information schedules Y devices or indicates Y D2R resources; or

[0955] The message 2 sent by the reader includes Y scheduling information, the first indication information is carried in the Y scheduling information, and the Y scheduling information respectively schedules Y devices.

[0956] Optionally, if the D2R resource is the frequency domain resource of message 1, the frequency domain resource of the D2R resource of message 3 is the same as the frequency domain resource of message 1.

[0957] Optionally, the frequency domain resources of the D2R resources in the default message 3 are the same as those in the frequency domain resources of the message 1; or,

[0958] The reader indicates to the device that the first information corresponding to message 3 is the same as the first information corresponding to message 1; or...

[0959] When the first information is the control information corresponding to message 1, the reader indicates or configures the control information corresponding to message 3 to the device to be the same as the control information corresponding to message 1.

[0960] Optionally, the Y D2R resources include FDM resources, and the FDM resources include at least one of the following:

[0961] At least one or more FDM resources in the time domain;

[0962] All or part of the FDM resources on at least one time-domain resource indicated by the paging message or R2D transmission that triggers message 1;

[0963] All or part of the FDM resources on at least one time-domain resource indicated by the R2D transmission of trigger message 3;

[0964] All or part of the FDM resources on at least one time-domain resource indicated by message 2;

[0965] All or part of the FDM resources on at least one time-domain resource in the transmission process or session between the reader and at least one device;

[0966] At least one FDM resource corresponding to a first time-domain resource.

[0967] Optionally, the Y D2R resources include TDM resources, and the TDM resources include at least one of the following:

[0968] At least one frequency domain resource, including all or part of the TDM resources;

[0969] All or part of the TDM resources on at least one frequency domain resource indicated by the paging message or R2D transmission that triggers message 1;

[0970] All or part of the TDM resources on at least one frequency domain resource indicated by the R2D transmission of trigger message 3;

[0971] All or part of the TDM resources on at least one frequency domain resource indicated by message 2 of the random access;

[0972] All or part of the TDM resources on at least one frequency domain resource in the transmission process or session between the reader and at least one device;

[0973] At least one TDM resource corresponding to a first frequency domain resource.

[0974] Optionally, determining D2R resources based on the first information includes:

[0975] Based on the first information, Y pieces of information for indicating D2R frequency domain resources or information for indicating D2R time domain resources are determined, and a D2R resource corresponding to one of the pieces of information for indicating D2R frequency domain resources or information for indicating D2R time domain resources is randomly selected from them; or

[0976] Determine the information corresponding to the device among Y pieces of information indicating D2R frequency domain resources or D2R time domain resources, and determine the D2R resources based on the information indicating D2R frequency domain resources or D2R time domain resources.

[0977] The aforementioned terminals can improve the transmission performance of the equipment.

[0978] It is understood that the implementation process of each implementation method mentioned in this embodiment can refer to the relevant description of the above method embodiments and achieve the same or corresponding technical effects. To avoid repetition, it will not be described again here.

[0979] This application also provides a network-side device, including a processor and a communication interface. The communication interface is coupled to the processor, and the processor is used to run programs or instructions to implement the steps of the method embodiments shown in FIG3 or FIG10. This network-side device embodiment corresponds to the above-described reader / writer method embodiment. All implementation processes and methods of the above-described method embodiments can be applied to this network-side device embodiment and can achieve the same technical effect.

[0980] Specifically, this application embodiment also provides a network-side device, which may be the information transmitting device shown in FIG41. As shown in FIG45, the network-side device 4500 includes: an antenna 4501, a radio frequency device 4502, a baseband device 4503, a processor 4504, and a memory 4505. The antenna 4501 is connected to the radio frequency device 4502. In the uplink direction, the radio frequency device 4502 receives information through the antenna 4501 and sends the received information to the baseband device 4503 for processing. In the downlink direction, the baseband device 4503 processes the information to be transmitted and sends it to the radio frequency device 4502, which processes the received information and then transmits it through the antenna 4501.

[0981] The method executed by the network-side device in the above embodiments can be implemented in the baseband device 4503, which includes a baseband processor.

[0982] The baseband device 4503 may include at least one baseband board, on which multiple chips are disposed, as shown in FIG45. One of the chips is, for example, a baseband processor, which is connected to the memory 4505 via a bus interface to call the program or instructions in the memory 4505 to execute the network-side device operation shown in the above method embodiment.

[0983] The network-side device may also include a network interface 4506, such as a Common Public Radio Interface (CPRI).

[0984] The radio frequency device 4502 is used to send first information to the device, wherein the first information includes at least one of the following:

[0985] The first indication information is used to indicate Y devices to the D2R resource of the reader / writer; the second indication information is used to indicate the information set; the third indication information is used to indicate the value of Y; and the fourth indication information is used to indicate the maximum value of Y. The first indication information belongs to the information set, and Y is a positive integer.

[0986] The first indication information includes at least one of the following: information for indicating D2R frequency domain resources, and information for indicating D2R time domain resources;

[0987] The information used to indicate D2R frequency domain resources includes at least one of the following: R, frequency offset, and frequency domain location information, wherein R includes or represents the number of repetitions, repetition parameters, or repetition factors;

[0988] The information used to indicate D2R time-domain resources includes at least one of the following: time-domain location information and time delay information;

[0989] The information set includes at least one of the following: an information set for indicating D2R frequency domain resources, and an information set for indicating D2R time domain resources.

[0990] Optionally, the first information satisfies at least one of the following:

[0991] When the D2R resource is used to transmit message 1 or message 3, or when the D2R resource is a D2R resource corresponding to the identification information of the device, the first information includes the third indication information.

[0992] When the frequency division multiplexing (FDM) resources or time division multiplexing (TDM) resources are D2R resources of multiple devices, the first information includes the first indication information or the third indication information, wherein the Y D2R resources indicated by the first indication information are D2R resources in the FDM resources or the TDM resources, or the D2R resources corresponding to the value of Y indicated by the third indication information are D2R resources in the FDM resources or the TDM resources.

[0993] In the case that the D2R resource is a D2R resource corresponding to multicast R2D transmission, or the D2R resource corresponds to multiple devices that have been successfully inventoried or successfully accessed, or the D2R resource corresponds to multiple specific devices, the first information includes the third indication information.

[0994] If the D2R resource is a D2R resource corresponding to unicast transmission, or the D2R resource corresponds to a device that has been successfully inventoried or successfully accessed, or the D2R resource corresponds to a specific device, the first information does not include the third indication information, or the value of Y is 1.

[0995] Optionally, the value of Y is equal to the number of messages 1 corresponding to message 2 sent by the reader; or,

[0996] The value of Y is equal to the number of D2R resources corresponding to the R2D transmission sent by the reader; or,

[0997] The value of Y is equal to the number of devices corresponding to the R2D transmission sent by the reader; or,

[0998] The value of Y is equal to the number of message 1s received by the reader; or,

[0999] The value of Y is equal to the number of responses carried in the R2D transmission sent by the reader, wherein the response is a response to message 1 of random access, or the response is a response to the D2R transmission received by the reader; or,

[1000] The value of Y is equal to the number of random IDs or random RN16 numbers carried in message 2 sent by the reader; or,

[1001] The value of Y includes at least one of the following: the number of D2R resources or locations in FDM, the number of D2R resources or locations in TDM; or

[1002] The value of Y is the number agreed upon in the protocol, or the value of Y is indicated by the reader during the inventory process; and the reader indicates to the device at least one of the following: whether the information for indicating D2R frequency domain resources or the information for indicating D2R time domain resources is valid or used, and whether the information for indicating D2R frequency domain resources or the information for indicating D2R time domain resources has an actual corresponding D2R resource.

[1003] Optionally, the first information may further indicate at least one of the following:

[1004] Is this the final response?

[1005] Is there a response?

[1006] Is this the last D2R scheduling information?

[1007] Whether it is the last piece of information used to indicate D2R frequency domain resources or the last piece of information used to indicate D2R time domain resources;

[1008] Does D2R have scheduling information?

[1009] Does information exist to indicate D2R frequency domain resources or D2R time domain resources?

[1010] Optionally, the value of Y is indicated by at least one of the following:

[1011] Is this the final response?

[1012] Is there a response?

[1013] Is this the last D2R scheduling information?

[1014] Whether it is the last piece of information used to indicate D2R frequency domain resources or the last piece of information used to indicate D2R time domain resources;

[1015] Does D2R have scheduling information?

[1016] Does information exist to indicate D2R frequency domain resources or D2R time domain resources?

[1017] Optionally, the information set indicated by the second indication information includes at least a portion of the information set agreed upon in the protocol.

[1018] Alternatively, if Y is greater than 1:

[1019] The Y D2R resources are D2R resources that can be used simultaneously; or

[1020] The Y D2R resources are coexistent; or

[1021] The Y D2R resources do not overlap; or

[1022] The interval between the Y D2R resources is greater than or equal to a preset value.

[1023] Optionally, the first indication information satisfies at least one of the following:

[1024] The first instruction information indicates the Y D2R resources in a first preset order;

[1025] The first value is the number of bits or chips corresponding to information indicating D2R frequency domain resources or information indicating D2R time domain resources; the second value is the number of chips corresponding to information indicating D2R frequency domain resources or information indicating D2R time domain resources. The first value is equal to one of the following: log2(My), log2(Ymax), log2(Y), and the second value is equal to one of the following: log2(My)*2*M, log2(Ymax)*2*M, log2(Y)*2*M, log2(My)*M, log2(Ymax)*M, log2(Y)*M.

[1026] The total number of bits or chips in the first indication information is a third value, or the total number of chips in the first indication information is a fourth value, wherein the third value is equal to one of the following: Y*log2(My), Y*log2(Ymax), Y*log2(Y), and the fourth value is equal to one of the following: Y*log2(My)*2*M, Y*log2(Ymax)*2*M, Y*log2(Y)*2*M, Y*log2(My)*M, Y*log2(Ymax)*M, Y*log2(Y)*M;

[1027] Wherein, My represents the number of values ​​corresponding to or included in the D2R resource range information, Ymax is the maximum value of Y, and M is the number of chips or the on / off keying OOK modulation order corresponding to one bit of the first indication information.

[1028] Optionally, if the first information includes the first indication information and also includes at least one of the second indication information and the third indication information, the order of the second indication information and the third indication information with the first indication information in the first information is a second preset order.

[1029] Optionally, the first information indicates at least two of the first indication information, the second indication information, and the third indication information in a joint indication manner.

[1030] Optionally, at least two of the first indication information, the second indication information, and the third indication information are indicated by the same index or identifier; or,

[1031] The first information includes second indication information, and the set of information indicated by the second indication information corresponds to the first indication information or the third indication information.

[1032] The first information includes the third indication information, and the value of Y indicated by the third indication information corresponds to the first indication information or the second indication information;

[1033] The first information includes the first indication information, and the first indication information corresponds to the second indication information or the third indication information.

[1034] Optionally, the first indication information indicates Y D2R resources via a bitmap, bit string, or chip string.

[1035] Optionally, the number of bits contained in the bitmap or the bit string is equal to Y, Ymax, or My, or the number of chips contained in the chip string is equal to Y or My, where My represents the number of information items corresponding to the information set, and Ymax is the maximum value of Y; and / or

[1036] One bit in the bitmap or the bit string corresponds to or indicates at least one piece of information in the information set used to indicate D2R frequency domain resources or D2R time domain resources; or, one chip in the chip string corresponds to or indicates at least one piece of information in the information set used to indicate D2R frequency domain resources or D2R time domain resources.

[1037] Optionally, the second indication information is an indication information set via a bitmap, bit string, or chip string;

[1038] Wherein, a bit in the bitmap or the bit string indicates at least one piece of information in the information set for indicating D2R frequency domain resources or for indicating D2R time domain resources; or, a chip in the chip string indicates at least one piece of information in the information set for indicating D2R frequency domain resources or for indicating D2R time domain resources.

[1039] Optionally, the information set indicated by the second indication information includes a first information set, the first information set including information indicating D2R resources that do not satisfy the first relation, and the Y D2R resources indicated by the first indication information are D2R resources that satisfy the first relation;

[1040] The first relationship includes:

[1041] Multiple D2R resources are D2R resources that can be used simultaneously; or

[1042] Multiple D2R resources can coexist; or

[1043] Multiple D2R resources do not overlap; or

[1044] The interval between multiple D2R resources is greater than or equal to the preset value.

[1045] Optionally, information indicating D2R frequency domain resources or information indicating D2R time domain resources corresponds to a second piece of information, the second piece of information including one of the following:

[1046] Message 1;

[1047] The random ID or RN16 number transmitted in message 1;

[1048] Information about the D2R resources in transmission message 1;

[1049] The response to message 1;

[1050] Equipment identification.

[1051] Optionally, the message 2 sent by the reader carries Y pieces of second information, wherein the Y pieces of information for indicating D2R frequency domain resources or for indicating D2R time domain resources correspond to the Y pieces of second information respectively;

[1052] Wherein, the order of the Y pieces of information indicating D2R frequency domain resources or the order of the Y pieces of second information in message 2 is the same as the order of the second pieces of information; or

[1053] The order of the Y pieces of information used to indicate D2R frequency domain resources or the Y pieces of information used to indicate D2R time domain resources is the same as the order of the values ​​of the Y pieces of second information.

[1054] Optionally, the message 2 sent by the reader includes responses to Y messages 1, with the first indication information carried in the responses to the Y messages 1; or,

[1055] The first indication information is carried in the shared scheduling information in message 2 sent by the reader / writer, wherein the shared scheduling information schedules Y devices or indicates Y D2R resources; or

[1056] The message 2 sent by the reader includes Y scheduling information, the first indication information is carried in the Y scheduling information, and the Y scheduling information respectively schedules Y devices.

[1057] Optionally, if the D2R resource is the frequency domain resource of message 1, the frequency domain resource of the D2R resource of message 3 is the same as the frequency domain resource of message 1.

[1058] Optionally, the frequency domain resources of the D2R resources in the default message 3 are the same as those in the frequency domain resources of the message 1; or,

[1059] The reader indicates to the device that the first information corresponding to message 3 is the same as the first information corresponding to message 1; or...

[1060] When the first information is the control information corresponding to message 1, the reader indicates or configures the control information corresponding to message 3 to the device to be the same as the control information corresponding to message 1.

[1061] Optionally, the Y D2R resources include FDM resources, and the FDM resources include at least one of the following:

[1062] At least one or more FDM resources in the time domain;

[1063] All or part of the FDM resources on at least one time-domain resource indicated by the paging message or R2D transmission that triggers message 1;

[1064] All or part of the FDM resources on at least one time-domain resource indicated by the R2D transmission of trigger message 3;

[1065] All or part of the FDM resources on at least one time-domain resource indicated by message 2;

[1066] All or part of the FDM resources on at least one time-domain resource in the transmission process or session between the reader and at least one device;

[1067] At least one FDM resource corresponding to a first time-domain resource.

[1068] Optionally, the Y D2R resources include TDM resources, and the TDM resources include at least one of the following:

[1069] At least one frequency domain resource, including all or part of the TDM resources;

[1070] All or part of the TDM resources on at least one frequency domain resource indicated by the paging message or R2D transmission that triggers message 1;

[1071] All or part of the TDM resources on at least one frequency domain resource indicated by the R2D transmission of trigger message 3;

[1072] All or part of the TDM resources on at least one frequency domain resource indicated by message 2 of the random access;

[1073] All or part of the TDM resources on at least one frequency domain resource in the transmission process or session between the reader and at least one device;

[1074] At least one TDM resource corresponding to a first frequency domain resource.

[1075] The aforementioned network-side equipment can improve the transmission performance of the device.

[1076] In addition, the network-side device 4500 of this application embodiment also includes: a program or instructions stored in the memory 4505 and executable on the processor 4504. The processor 4504 calls the program or instructions in the memory 4505 to execute the methods executed by each module shown in FIG3 and achieve the same technical effect. To avoid repetition, it will not be described in detail here.

[1077] This application also provides a readable storage medium storing a program or instructions. When the program or instructions are executed by a processor, they implement the various processes of the above-described information sending method or information receiving method embodiments and achieve the same technical effect. To avoid repetition, they will not be described again here.

[1078] The processor mentioned above is either the processor in the terminal described in the above embodiments or the processor in the network-side device. The readable storage medium includes computer-readable storage media, such as computer read-only memory (ROM), random access memory (RAM), magnetic disk, or optical disk. In some examples, the readable storage medium may be a non-transient readable storage medium.

[1079] This application embodiment also provides a chip, which includes a processor and a communication interface. The communication interface and the processor are coupled. The processor is used to run programs or instructions to implement the various processes of the above-described information sending method or information receiving method embodiments, and can achieve the same technical effect. To avoid repetition, it will not be described again here.

[1080] It should be understood that the chip mentioned in the embodiments of this application may also be referred to as a system-on-a-chip, system chip, chip system, or system-on-a-chip, etc.

[1081] This application also provides a computer program / program product, which is stored in a storage medium and executed by at least one processor to implement the various processes of the above-described information sending method or information receiving method embodiments, and can achieve the same technical effect. To avoid repetition, it will not be described again here.

[1082] This application also provides a wireless communication system, including: a reader and a device, wherein the reader can be used to perform the steps of the information sending method described above, and the device can be used to perform the steps of the information receiving method described above.

[1083] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element. Furthermore, it should be noted that the scope of the methods and apparatuses in the embodiments of this application is not limited to performing functions in the order shown or discussed, but may also include performing functions substantially simultaneously or in the reverse order, depending on the functions involved. For example, the described methods may be performed in a different order than described, and various steps may be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.

[1084] From the above description of the embodiments, those skilled in the art can clearly understand that the methods of the above embodiments can be implemented by means of computer software products plus necessary general-purpose hardware platforms, and of course, they can also be implemented by hardware. The computer software product is stored in a storage medium (such as ROM, RAM, magnetic disk, optical disk, etc.), and the computer software product includes several instructions to cause the terminal or network-side device to execute the methods described in the various embodiments of this application.

[1085] The embodiments of this application have been described above with reference to the accompanying drawings. However, this application is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other implementations under the guidance of this application without departing from the spirit and scope of the claims. All of these implementations are within the protection scope of this application.

Claims

A method for sending information, comprising: The reader sends first information to the device, the first information including at least one of the following: The first indication information is used to indicate Y devices to the D2R resource of the reader / writer; the second indication information is used to indicate the information set; the third indication information is used to indicate the value of Y; and the fourth indication information is used to indicate the maximum value of Y. The first indication information belongs to the information set, and Y is a positive integer. The first indication information includes at least one of the following: information for indicating D2R frequency domain resources, and information for indicating D2R time domain resources; The information used to indicate D2R frequency domain resources includes at least one of the following: R, frequency offset, and frequency domain location information, wherein R includes or represents the number of repetitions, repetition parameters, or repetition factors; The information used to indicate D2R time-domain resources includes at least one of the following: time-domain location information and time delay information; The information set includes at least one of the following: an information set for indicating D2R frequency domain resources, and an information set for indicating D2R time domain resources. According to the method of claim 1, wherein, The first information satisfies at least one of the following: When the D2R resource is used to transmit message 1 or message 3, or when the D2R resource is a D2R resource corresponding to the identification information of the device, the first information includes the third indication information. When the frequency division multiplexing (FDM) resources or time division multiplexing (TDM) resources are D2R resources of multiple devices, the first information includes the first indication information or the third indication information, wherein the Y D2R resources indicated by the first indication information are D2R resources in the FDM resources or the TDM resources, or the D2R resources corresponding to the value of Y indicated by the third indication information are D2R resources in the FDM resources or the TDM resources. In the case that the D2R resource is a D2R resource corresponding to multicast R2D transmission, or the D2R resource corresponds to multiple devices that have been successfully inventoried or successfully accessed, or the D2R resource corresponds to multiple specific devices, the first information includes the third indication information. If the D2R resource is a D2R resource corresponding to unicast transmission, or the D2R resource corresponds to a device that has been successfully inventoried or successfully accessed, or the D2R resource corresponds to a specific device, the first information does not include the third indication information, or the value of Y is 1. The method according to claim 1 or 2, wherein, The value of Y is equal to the number of messages 1 corresponding to message 2 sent by the reader; or, The value of Y is equal to the number of D2R resources corresponding to the R2D transmission sent by the reader; or, The value of Y is equal to the number of devices corresponding to the R2D transmission sent by the reader; or, The value of Y is equal to the number of message 1s received by the reader; or, The value of Y is equal to the number of responses carried in the R2D transmission sent by the reader, wherein the response is a response to message 1 of random access, or the response is a response to the D2R transmission received by the reader; or, The value of Y is equal to the number of random IDs or random RN16 numbers carried in message 2 sent by the reader; or, The value of Y includes at least one of the following: the number of D2R resources or locations in FDM, the number of D2R resources or locations in TDM; or The value of Y is the number agreed upon in the protocol, or the value of Y is indicated by the reader during the inventory process; and the reader indicates to the device at least one of the following: whether the information for indicating D2R frequency domain resources or the information for indicating D2R time domain resources is valid or used, and whether the information for indicating D2R frequency domain resources or the information for indicating D2R time domain resources has an actual corresponding D2R resource. The method according to any one of claims 1 to 3, wherein, The first information also indicates at least one of the following: Is this the final response? Is there a response? Is this the last D2R scheduling information? Whether it is the last piece of information used to indicate D2R frequency domain resources or the last piece of information used to indicate D2R time domain resources; Does D2R scheduling information exist? Does information exist to indicate D2R frequency domain resources or D2R time domain resources? The method according to any one of claims 1 to 4, wherein, The value of Y is indicated by at least one of the following: Is this the final response? Is there a response? Is this the last D2R scheduling information? Whether it is the last piece of information used to indicate D2R frequency domain resources or the last piece of information used to indicate D2R time domain resources; Does D2R scheduling information exist? Does information exist to indicate D2R frequency domain resources or D2R time domain resources? The method according to any one of claims 1 to 5, wherein, The second instruction indicates a set of information that includes at least a portion of the set of information agreed upon in the protocol. The method according to any one of claims 1 to 6, wherein, When Y is greater than 1: The Y D2R resources are D2R resources that can be used simultaneously; or The Y D2R resources are coexistent; or The Y D2R resources do not overlap; or The interval between the Y D2R resources is greater than or equal to a preset value. The method according to any one of claims 1 to 7, wherein, The first indication information satisfies at least one of the following: The first instruction information indicates the Y D2R resources in a first preset order; The first value is the number of bits or chips corresponding to information indicating D2R frequency domain resources or information indicating D2R time domain resources, or the second value is the number of chips corresponding to a D2R resource. The first value is equal to one of the following: log2(My), log2(Ymax), log2(Y), and the second value is equal to one of the following: log2(My)*2*M, log2(Ymax)*2*M, log2(Y)*2*M, log2(My)*M, log2(Ymax)*M, log2(Y)*M. The total number of bits or chips in the first indication information is a third value, or the total number of chips in the first indication information is a fourth value, wherein the third value is equal to one of the following: Y*log2(My), Y*log2(Ymax), Y*log2(Y), and the fourth value is equal to one of the following: Y*log2(My)*2*M, Y*log2(Ymax)*2*M, Y*log2(Y)*2*M, Y*log2(My)*M, Y*log2(Ymax)*M, Y*log2(Y)*M; Wherein, My represents the number of values ​​corresponding to or included in the D2R resource range information, Ymax is the maximum value of Y, and M is the number of chips or the on / off keying OOK modulation order corresponding to one bit of the first indication information. The method according to any one of claims 1 to 8, wherein, When the first information includes the first indication information and also includes at least one of the second indication information and the third indication information, the order of the second indication information and the third indication information with the first indication information in the first information is a second preset order. The method according to any one of claims 1 to 8, wherein, The first information indicates at least two of the first instruction information, the second instruction information, and the third instruction information in a combined instruction manner. The method according to claim 10, wherein, At least two of the first indication information, the second indication information, and the third indication information are indicated by the same index or identifier; or, The first information includes second indication information, and the set of information indicated by the second indication information corresponds to the first indication information or the third indication information. The first information includes the third indication information, and the value of Y indicated by the third indication information corresponds to the first indication information or the second indication information; The first information includes the first indication information, and the first indication information corresponds to the second indication information or the third indication information. The method according to any one of claims 1 to 8, wherein, The first indication information indicates Y D2R resources via a bitmap, bit string, or chip string. The method according to claim 12, wherein, The number of bits contained in the bitmap or the bit string is equal to Y, Ymax, or My, or the number of chips contained in the chip string is equal to Y or My, where My represents the number of information items corresponding to the information set, and Ymax is the maximum value of Y; and / or One bit in the bitmap or the bit string corresponds to or indicates at least one piece of information in the information set used to indicate D2R frequency domain resources or D2R time domain resources; or, one chip in the chip string corresponds to or indicates at least one piece of information in the information set used to indicate D2R frequency domain resources or D2R time domain resources. The method according to any one of claims 1 to 13, wherein, The second indication information is a set of indication information via a bitmap, bit string, or chip string; Wherein, a bit in the bitmap or the bit string indicates at least one piece of information in the information set for indicating D2R frequency domain resources or for indicating D2R time domain resources; or, a chip in the chip string indicates at least one piece of information in the information set for indicating D2R frequency domain resources or for indicating D2R time domain resources. The method according to any one of claims 1 to 14, wherein, The second indication information indicates a set of information including a first set of information, the first set of information including information indicating D2R resources that do not satisfy the first relation, and the Y D2R resources indicated by the first indication information are D2R resources that satisfy the first relation; The first relationship includes: Multiple D2R resources are D2R resources that can be used simultaneously; or Multiple D2R resources can coexist; or Multiple D2R resources do not overlap; or The interval between multiple D2R resources is greater than or equal to the preset value. The method according to any one of claims 1 to 15, wherein, A piece of information indicating D2R frequency domain resources or a piece of information indicating D2R time domain resources corresponds to a second piece of information, the second piece of information including the following: Message 1; The random ID or RN16 number transmitted in message 1; Information about the D2R resources in transmission message 1; The response to message 1; Equipment identification. The method according to claim 16, wherein, The message 2 sent by the reader carries Y pieces of second information, and the Y pieces of information used to indicate D2R frequency domain resources or the Y pieces of information used to indicate D2R time domain resources correspond to the Y pieces of second information respectively; Wherein, the order of the Y pieces of information indicating D2R frequency domain resources or the order of the Y pieces of second information in message 2 is the same as the order of the second pieces of information; or The order of the Y pieces of information used to indicate D2R frequency domain resources or the Y pieces of information used to indicate D2R time domain resources is the same as the order of the values ​​of the Y pieces of second information. The method according to any one of claims 1 to 17, wherein, The message 2 sent by the reader includes responses to Y messages 1, and the first indication information is carried in the responses to the Y messages 1; or, The first indication information is carried in the shared scheduling information in message 2 sent by the reader / writer, wherein the shared scheduling information schedules Y devices or indicates Y D2R resources; or The message 2 sent by the reader includes Y scheduling information, the first indication information is carried in the Y scheduling information, and the Y scheduling information respectively schedules Y devices. The method according to any one of claims 1 to 18, wherein, When the D2R resource is the frequency domain resource of message 1, the frequency domain resource of the D2R resource of message 3 is the same as the frequency domain resource of message 1. The method according to claim 19, wherein, The frequency domain resources of the D2R resources in the default message 3 are the same as those in the frequency domain resources of the message 1; or, The reader indicates to the device that the first information corresponding to message 3 is the same as the first information corresponding to message 1; or... When the first information is the control information corresponding to message 1, the reader indicates or configures the control information corresponding to message 3 to the device to be the same as the control information corresponding to message 1. The method according to any one of claims 1 to 20, wherein, The Y D2R resources include FDM resources, and the FDM resources include at least one of the following: At least one or more FDM resources in the time domain; All or part of the FDM resources on at least one time-domain resource indicated by the paging message or R2D transmission that triggers message 1; All or part of the FDM resources on at least one time-domain resource indicated by the R2D transmission of trigger message 3; All or part of the FDM resources on at least one time-domain resource indicated by message 2; All or part of the FDM resources on at least one time-domain resource in the transmission process or session between the reader and at least one device; At least one FDM resource corresponding to a first time-domain resource. The method according to any one of claims 1 to 21, wherein, The Y D2R resources include TDM resources, and the TDM resources include at least one of the following: At least one frequency domain resource, including all or part of the TDM resources; All or part of the TDM resources on at least one frequency domain resource indicated by the paging message or R2D transmission that triggers message 1; All or part of the TDM resources on at least one frequency domain resource indicated by the R2D transmission of trigger message 3; All or part of the TDM resources on at least one frequency domain resource indicated by message 2 of the random access; All or part of the TDM resources on at least one frequency domain resource in the transmission process or session between the reader and at least one device; At least one TDM resource corresponding to a first frequency domain resource. An information receiving method, comprising: The device acquires the first information; The device determines device-to-reader (D2R) resources based on the first information; The first information includes at least one of the following: The first indication information is used to indicate Y devices to the D2R resource of the reader / writer; the second indication information is used to indicate the information set; the third indication information is used to indicate the value of Y; and the fourth indication information is used to indicate the maximum value of Y. The first indication information belongs to the information set, and Y is a positive integer. The first indication information includes at least one of the following: information for indicating D2R frequency domain resources, and information for indicating D2R time domain resources; The information used to indicate D2R frequency domain resources includes at least one of the following: R, frequency offset, and frequency domain location information, wherein R includes or represents the number of repetitions, repetition parameters, or repetition factors; The information used to indicate D2R time-domain resources includes at least one of the following: time-domain location information and time delay information; The information set includes at least one of the following: an information set for indicating D2R frequency domain resources, and an information set for indicating D2R time domain resources. The method according to claim 23, wherein, The first information satisfies at least one of the following: When the D2R resource is used to transmit message 1 or message 3, or when the D2R resource is a D2R resource corresponding to the identification information of the device, the first information includes the third indication information. When the frequency division multiplexing (FDM) resources or time division multiplexing (TDM) resources are D2R resources of multiple devices, the first information includes the first indication information or the third indication information, wherein the Y D2R resources indicated by the first indication information are D2R resources in the FDM resources or the TDM resources, or the D2R resources corresponding to the value of Y indicated by the third indication information are D2R resources in the FDM resources or the TDM resources. In the case that the D2R resource is a D2R resource corresponding to multicast R2D transmission, or the D2R resource corresponds to multiple devices that have been successfully inventoried or successfully accessed, or the D2R resource corresponds to multiple specific devices, the first information includes the third indication information. If the D2R resource is a D2R resource corresponding to unicast transmission, or the D2R resource corresponds to a device that has been successfully inventoried or successfully accessed, or the D2R resource corresponds to a specific device, the first information does not include the third indication information, or the value of Y is 1. The method according to claim 23 or 24, wherein, The value of Y is equal to the number of messages 1 corresponding to message 2 sent by the reader; or, The value of Y is equal to the number of D2R resources corresponding to the R2D transmission sent by the reader; or, The value of Y is equal to the number of devices corresponding to the R2D transmission sent by the reader; or, The value of Y is equal to the number of message 1s received by the reader; or, The value of Y is equal to the number of responses carried in the R2D transmission sent by the reader, wherein the response is a response to message 1 of random access, or the response is a response to the D2R transmission received by the reader; or, The value of Y is equal to the number of random IDs or random RN16 numbers carried in message 2 sent by the reader; or, The value of Y includes at least one of the following: the number of D2R resources or locations in FDM, the number of D2R resources or locations in TDM; or The value of Y is the number agreed upon in the protocol, or the value of Y is indicated by the reader during the inventory process; and the reader indicates to the device at least one of the following: whether the information for indicating D2R frequency domain resources or the information for indicating D2R time domain resources is valid or used, and whether the information for indicating D2R frequency domain resources or the information for indicating D2R time domain resources has an actual corresponding D2R resource. The method according to any one of claims 23 to 25, wherein, The value of Y is indicated by at least one of the following: Is this the final response? Is there a response? Is this the last D2R scheduling information? Whether it is the last piece of information used to indicate D2R frequency domain resources or the last piece of information used to indicate D2R time domain resources; Does D2R scheduling information exist? Does information exist to indicate D2R frequency domain resources or D2R time domain resources? The method according to any one of claims 23 to 26, wherein, When Y is greater than 1: The Y D2R resources are D2R resources that can be used simultaneously; or The Y D2R resources are coexistent; or The Y D2R resources do not overlap; or The interval between the Y D2R resources is greater than or equal to a preset value. The method according to any one of claims 23 to 27, wherein, The first indication information satisfies at least one of the following: The first instruction information indicates the Y D2R resources in a first preset order; The first value is the number of bits or chips corresponding to information indicating D2R frequency domain resources or information indicating D2R time domain resources; the second value is the number of chips corresponding to information indicating D2R frequency domain resources or information indicating D2R time domain resources. The first value is equal to one of the following: log2(My), log2(Ymax), log2(Y), and the second value is equal to one of the following: log2(My)*2*M, log2(Ymax)*2*M, log2(Y)*2*M, log2(My)*M, log2(Ymax)*M, log2(Y)*M. The total number of bits or chips in the first indication information is a third value, or the total number of chips in the first indication information is a fourth value, wherein the third value is equal to one of the following: Y*log2(My), Y*log2(Ymax), Y*log2(Y), and the fourth value is equal to one of the following: Y*log2(My)*2*M, Y*log2(Ymax)*2*M, Y*log2(Y)*2*M, Y*log2(My)*M, Y*log2(Ymax)*M, Y*log2(Y)*M; Wherein, My represents the number of values ​​corresponding to or included in the D2R resource range information, Ymax is the maximum value of Y, and M is the number of chips or the on / off keying OOK modulation order corresponding to one bit of the first indication information. The method according to any one of claims 23 to 28, wherein, The first information indicates at least two of the first instruction information, the second instruction information, and the third instruction information in a combined instruction manner. The method according to any one of claims 23 to 28, wherein, The first indication information indicates Y D2R resources via a bitmap, bit string, or chip string. The method according to any one of claims 23 to 30, wherein, The second indication information is a set of indication information via a bitmap, bit string, or chip string; Wherein, a bit in the bitmap or the bit string indicates at least one piece of information in the information set, or a chip in the chip string indicates at least one piece of information in the information set. The method according to any one of claims 23 to 31, wherein, A piece of information indicating D2R frequency domain resources or a piece of information indicating D2R time domain resources corresponds to a second piece of information, the second piece of information including the following: Message 1; The random ID or RN16 number transmitted in message 1; Information about the D2R resources in transmission message 1; The response to message 1; Equipment identification. The method according to any one of claims 23 to 31, wherein, The message 2 sent by the reader includes responses to Y messages 1, and the first indication information is carried in the responses to the Y messages 1; or, The first indication information is carried in the shared scheduling information in message 2 sent by the reader / writer, wherein the shared scheduling information schedules Y devices or indicates Y D2R resources; Furthermore, the message 2 sent by the reader includes Y scheduling information, the first indication information is carried in the Y scheduling information, and the Y scheduling information respectively schedules Y devices. The method according to any one of claims 23 to 33, wherein, The device determines the D2R resources based on the first information, including: The device determines Y pieces of information indicating D2R frequency domain resources or D2R time domain resources based on the first information, and randomly selects a D2R resource corresponding to one of the pieces of information indicating D2R frequency domain resources or D2R time domain resources; or The device determines the information corresponding to the device among Y pieces of information indicating D2R frequency domain resources or D2R time domain resources, and determines the D2R resources based on the information indicating D2R frequency domain resources or D2R time domain resources. An information transmission device, wherein, include: The sending module is configured to send first information to the device, the first information comprising at least one of the following: The first indication information is used to indicate Y devices to the D2R resource of the reader / writer; the second indication information is used to indicate the information set; the third indication information is used to indicate the value of Y; and the fourth indication information is used to indicate the maximum value of Y. The first indication information belongs to the information set, and Y is a positive integer. The first indication information includes at least one of the following: information for indicating D2R frequency domain resources, and information for indicating D2R time domain resources; The information used to indicate D2R frequency domain resources includes at least one of the following: R, frequency offset, and frequency domain location information, wherein R includes or represents the number of repetitions, repetition parameters, or repetition factors; The information used to indicate D2R time-domain resources includes at least one of the following: time-domain location information and time delay information; The information set includes at least one of the following: an information set for indicating D2R frequency domain resources, and an information set for indicating D2R time domain resources. The apparatus according to claim 35, wherein, The first information satisfies at least one of the following: When the D2R resource is used to transmit message 1 or message 3, or when the D2R resource is a D2R resource corresponding to the identification information of the device, the first information includes the third indication information. When the frequency division multiplexing (FDM) resources or time division multiplexing (TDM) resources are D2R resources of multiple devices, the first information includes the first indication information or the third indication information, wherein the Y D2R resources indicated by the first indication information are D2R resources in the FDM resources or the TDM resources, or the D2R resources corresponding to the value of Y indicated by the third indication information are D2R resources in the FDM resources or the TDM resources. In the case that the D2R resource is a D2R resource corresponding to multicast R2D transmission, or the D2R resource corresponds to multiple devices that have been successfully inventoried or successfully accessed, or the D2R resource corresponds to multiple specific devices, the first information includes the third indication information. If the D2R resource is a D2R resource corresponding to unicast transmission, or the D2R resource corresponds to a device that has been successfully inventoried or successfully accessed, or the D2R resource corresponds to a specific device, the first information does not include the third indication information, or the value of Y is 1. An information receiving device, comprising: The processing module is used to obtain the first information; The processing module is also used to determine device-to-reader (D2R) resources based on the first information; The first information includes at least one of the following: The first indication information is used to indicate Y devices to the D2R resource of the reader / writer; the second indication information is used to indicate the information set; the third indication information is used to indicate the value of Y; and the fourth indication information is used to indicate the maximum value of Y. The first indication information belongs to the information set, and Y is a positive integer. The first indication information includes at least one of the following: information for indicating D2R frequency domain resources, and information for indicating D2R time domain resources; The information used to indicate D2R frequency domain resources includes at least one of the following: R, frequency offset, and frequency domain location information, wherein R includes or represents the number of repetitions, repetition parameters, or repetition factors; The information used to indicate D2R time-domain resources includes at least one of the following: time-domain location information and time delay information; The information set includes at least one of the following: an information set for indicating D2R frequency domain resources, and an information set for indicating D2R time domain resources. The apparatus according to claim 37, wherein, The first information satisfies at least one of the following: When the D2R resource is used to transmit message 1 or message 3, or when the D2R resource is a D2R resource corresponding to the identification information of the device, the first information includes the third indication information. When the frequency division multiplexing (FDM) resources or time division multiplexing (TDM) resources are D2R resources of multiple devices, the first information includes the first indication information or the third indication information, wherein the Y D2R resources indicated by the first indication information are D2R resources in the FDM resources or the TDM resources, or the D2R resources corresponding to the value of Y indicated by the third indication information are D2R resources in the FDM resources or the TDM resources. In the case that the D2R resource is a D2R resource corresponding to multicast R2D transmission, or the D2R resource corresponds to multiple devices that have been successfully inventoried or successfully accessed, or the D2R resource corresponds to multiple specific devices, the first information includes the third indication information. If the D2R resource is a D2R resource corresponding to unicast transmission, or the D2R resource corresponds to a device that has been successfully inventoried or successfully accessed, or the D2R resource corresponds to a specific device, the first information does not include the third indication information, or the value of Y is 1. A reader / writer includes a processor and a memory, the memory storing a program or instructions executable on the processor, the program or instructions, when executed by the processor, implementing the steps of the information transmission method as described in any one of claims 1 to 22. An apparatus includes a processor and a memory, the memory storing a program or instructions executable on the processor, the program or instructions, when executed by the processor, implementing the steps of the information receiving method as described in any one of claims 23 to 34. A readable storage medium storing a program or instructions that, when executed by a processor, implement the steps of the information transmission method as described in any one of claims 1 to 22, or the steps of the information reception method as described in any one of claims 23 to 34. A computer program product, the computer program product being stored in a storage medium, the computer program product being executed by at least one processor to implement the steps of the information transmission method as claimed in any one of claims 1 to 22, or to implement the steps of the information reception method as claimed in any one of claims 23 to 34.

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