Transmission parameter determination method, apparatus, device, and readable storage medium

Abstract

The present application belongs to the technical field of communications. Disclosed are transmission parameter determination methods, an apparatus, a device, and a readable storage medium. A method comprises: a responder device checking a resource group set bearing downlink control signaling; and the responder device determining a back transmission parameter according to the number of resource groups contained in the resource group set, the corresponding relationship between the number of the resource groups contained in the resource group set and the back transmission parameter being indicated by a read-write device or being predefined by a protocol, and the back transmission parameter comprising at least one of the following: the power of a signal transmitted by the responder device, the rate of data transmitted by the responder device, the number of information bits transmitted by the responder device, and the type of information transmitted by the responder device.

Description

Transmission parameter determination method, device, equipment and readable storage medium

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims priority to Chinese Patent Application No. 202311135765.1 filed in China on September 4, 2023, the entire contents of which are incorporated herein by reference. Technical Field

[0003] The present application belongs to the field of communication technology, and specifically relates to a method, apparatus, device and readable storage medium for determining transmission parameters. Background Art

[0004] In backscatter communication (BSC), the reverse transmission parameters of the answering device can be indicated by the control command of the reader / writer, but this requires adding additional signaling indication length, and the additional signaling requires additional resource mapping design, which in turn increases the complexity of resource mapping.

[0005] Summary of the Invention

[0006] The embodiments of the present application provide a transmission parameter determination method, apparatus, device, and readable storage medium, which can solve the problem of high signaling overhead and complex resource mapping in the indication method of reverse transmission parameters in BSC.

[0007] In a first aspect, a method for determining a transmission parameter is provided, comprising:

[0008] The answering device detects a resource group set carrying downlink control signaling;

[0009] The response device determines a reverse transmission parameter according to the number of resource groups included in the resource group set;

[0010] The corresponding relationship between the number of resource groups included in the resource group set and the reverse transmission parameter is indicated by a read / write device or predefined by a protocol, and the reverse transmission parameter includes at least one of the following:

[0011] the signal power transmitted by the transponder;

[0012] the data rate transmitted by the transponder;

[0013] the number of information bits transmitted by the transponder;

[0014] The type of information transmitted by the answering device.

[0015] In a second aspect, a method for determining a transmission parameter is provided, comprising:

[0016] The read / write device maps the downlink control signaling to the resource group in the resource group set;

[0017] The number of resource groups included in the resource group set indicates a reverse transmission parameter of the response device. The corresponding relationship between the number of resource groups included in the resource group set and the reverse transmission parameter is indicated by the read / write device or predefined by the protocol. The reverse transmission parameter includes at least one of the following:

[0018] the signal power transmitted by the transponder;

[0019] the data rate transmitted by the transponder;

[0020] the number of information bits transmitted by the transponder;

[0021] The type of information transmitted by the answering device.

[0022] According to a third aspect, a transmission parameter determination device is provided, comprising:

[0023] A detection module, configured to detect, by a response device, a resource group set carrying downlink control signaling;

[0024] a determination module, configured for the response device to determine a reverse transmission parameter according to the number of resource groups included in the resource group set;

[0025] The corresponding relationship between the number of resource groups included in the resource group set and the reverse transmission parameter is indicated by a read / write device or predefined by a protocol, and the reverse transmission parameter includes at least one of the following:

[0026] the signal power transmitted by the transponder;

[0027] the data rate transmitted by the transponder;

[0028] the number of information bits transmitted by the transponder;

[0029] The type of information transmitted by the answering device.

[0030] In a fourth aspect, a transmission parameter determination device is provided, including:

[0031] A mapping module, configured for the read / write device to map downlink control signaling to a resource group in a resource group set;

[0032] The number of resource groups included in the resource group set indicates a reverse transmission parameter of the response device. The corresponding relationship between the number of resource groups included in the resource group set and the reverse transmission parameter is indicated by the read / write device or predefined by the protocol. The reverse transmission parameter includes at least one of the following:

[0033] the signal power transmitted by the transponder;

[0034] the data rate transmitted by the transponder;

[0035] the number of information bits transmitted by the transponder;

[0036] The type of information transmitted by the answering device.

[0037] In a fifth aspect, a communication device is provided, which terminal includes a processor and a memory, wherein the memory stores programs or instructions that can be run on the processor, and when the program or instructions are executed by the processor, the steps of the method described in the first aspect are implemented, or the steps of the method described in the second aspect are implemented.

[0038] In a sixth aspect, a communication device is provided, including a processor and a communication interface, wherein:

[0039] In the case where the communication device is an answering device, the processor is configured to:

[0040] The answering device detects a resource group set carrying downlink control signaling;

[0041] The response device determines a reverse transmission parameter according to the number of resource groups included in the resource group set;

[0042] The corresponding relationship between the number of resource groups included in the resource group set and the reverse transmission parameter is indicated by a read / write device or predefined by a protocol, and the reverse transmission parameter includes at least one of the following:

[0043] the signal power transmitted by the transponder;

[0044] the data rate transmitted by the transponder;

[0045] the number of information bits transmitted by the transponder;

[0046] The type of information transmitted by the answering device.

[0047] In the case where the communication device is a read-write device, the processor is configured to:

[0048] The read / write device maps the downlink control signaling to the resource group in the resource group set;

[0049] The number of resource groups included in the resource group set indicates a reverse transmission parameter of the response device. The corresponding relationship between the number of resource groups included in the resource group set and the reverse transmission parameter is indicated by the read / write device or predefined by the protocol. The reverse transmission parameter includes at least one of the following:

[0050] the signal power transmitted by the transponder;

[0051] the data rate transmitted by the transponder;

[0052] the number of information bits transmitted by the transponder;

[0053] The type of information transmitted by the answering device.

[0054] In the seventh aspect, a readable storage medium is provided, on which a program or instruction is stored. When the program or instruction is executed by a processor, the steps of the method described in the first aspect are implemented, or the steps of the method described in the second aspect are implemented.

[0055] In an eighth aspect, a wireless communication system is provided, comprising: a response device and a read / write device, wherein the response device can be used to execute the steps of the method described in the first aspect, and the read / write device can be used to execute the steps of the method described in the second aspect.

[0056] In the ninth aspect, a chip is provided, comprising 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 method described in the first aspect, or to implement the method described in the second aspect.

[0057] In the tenth 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 method as described in the first aspect, or to implement the method as described in the second aspect.

[0058] In an embodiment of the present application, the number of resource groups included in the resource group set is used to implicitly indicate the reverse transmission parameters to the response device, which can save the overhead of signaling indication and reduce the complexity of resource mapping. In addition, the various parameters of the backscatter transmission can be flexibly indicated based on the number of resource groups included in the resource group set, thereby improving the flexibility and reliability of the transmission. BRIEF DESCRIPTION OF THE DRAWINGS

[0059] FIG1a is a block diagram of a wireless communication system applicable to embodiments of the present application;

[0060] Figure 1b is a schematic diagram of a BSC communication scenario;

[0061] Figure 1c is a schematic diagram of the BSC communication principle;

[0062] Figure 1d is a schematic diagram of information transmission between the reader and the tag;

[0063] Figure 1e is a schematic diagram of the process of Tag receiving and sending data;

[0064] FIG2 is a flow chart of a method for determining transmission parameters according to an embodiment of the present application;

[0065] FIG3 is a second flow chart of a method for determining transmission parameters according to an embodiment of the present application;

[0066] FIG4a is a schematic diagram of one of the application embodiments provided in the embodiments of the present application;

[0067] FIG4 b is a second schematic diagram of an application embodiment provided in an embodiment of the present application;

[0068] FIG4c is a third schematic diagram of an application embodiment provided in an embodiment of the present application;

[0069] FIG4 d is a fourth schematic diagram of an application embodiment provided in an embodiment of the present application;

[0070] FIG4e is a fifth schematic diagram of an application embodiment provided in the embodiments of the present application;

[0071] FIG4f is a sixth schematic diagram of an application embodiment provided by the embodiments of the present application;

[0072] FIG5 is a schematic diagram of a structure of a transmission parameter determination device according to an embodiment of the present application;

[0073] FIG6 is a second structural diagram of a transmission parameter determination device according to an embodiment of the present application;

[0074] FIG7 is a schematic structural diagram of a communication device provided in an embodiment of the present application;

[0075] FIG8 is a schematic diagram of the structure of a terminal provided in an embodiment of the present application;

[0076] FIG9 is a schematic diagram of the structure of the network side device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0077] The following will be combined with the accompanying drawings in the embodiments of this application to clearly describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field are within the scope of protection of this application.

[0078] The terms "first", "second", etc. in this application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the terms used in this way are interchangeable where appropriate, so that the embodiments of the present application can be implemented in an order other than those illustrated or described herein, and the objects distinguished by "first" and "second" are generally of the same type, and do not limit the number of objects, for example, the first object can be one or more. In addition, "or" in this application represents at least one of the connected objects. For example, "A or B" covers three options, namely, Option 1: including A but not including B; Option 2: including B but not including A; Option 3: including both A and B. The character " / " generally indicates that the objects associated before and after are in an "or" relationship.

[0079] The term "indication" in this application can be either a direct indication (or explicit indication) or an indirect indication (or implicit indication). A direct indication can be understood as the sender explicitly informing the receiver of specific information, the operation to be performed, or the requested result, etc. in the instruction sent; an indirect indication 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 operation to be performed or the requested result, etc. based on the judgment result.

[0080] It is worth noting that the technology described in the embodiments of the present application is not limited to the Long Term Evolution (LTE) / LTE-Advanced (LTE-A) system, 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 the embodiments of the present application are often used interchangeably, and the described technology can be used for the systems and radio technologies mentioned above, as well as for other systems and radio technologies. The following description describes a New Radio (NR) system for example purposes, and NR terminology is used in most of the following description, but these technologies can also be applied to systems other than NR systems, such as 6th Generation (6G) communication systems.

[0081] Figure 1a shows a block diagram of a wireless communication system applicable to embodiments of the present application. The wireless communication system includes a transponder 11, a reader / writer 12, and a network-side device 13. The transponder 11 can be any device that supports backscatter communication technology or radio frequency identification technology, including but not limited to a tag or terminal. For example, the tag can be a radio frequency identification (RFID) tag, commonly known as RFID. RFID technology can be divided into three types: active, passive, and semi-active. Accordingly, the transponder can include active, passive, and semi-active transponders. Passive transponders can also be referred to as passive IoT devices. The transponder can communicate by backscattering radio frequency (RF) signals, or, for some active transponders, can actively generate signals for transmission. Because the transponder's energy can come from the environment, such as ambient RF energy, thermal energy, wind energy, kinetic energy, etc., the transponder can also be referred to as an ambient IoT device. The above-mentioned reading and writing device 12 can be an opposite-side device that performs backscatter communication with the above-mentioned answering device 11, and can include but is not limited to a reader, a base station, an integrated access backhaul (IAB) node, a network-controlled repeater (NCR) node, a reconfigurable intelligent surface (RIS) node or terminal, etc.

[0082] Among them, the above-mentioned terminals can be mobile phones, tablet personal computers, laptop computers, notebook computers, personal digital assistants (PDAs), handheld computers, netbooks, ultra-mobile personal computers (UMPCs), mobile Internet devices (MIDs), augmented reality (AR), virtual reality (VR) devices, robots, wearable devices, flight vehicles, vehicle user equipment (VUE), shipborne equipment, pedestrian user equipment (PUE), smart homes (home appliances with wireless communication functions, such as refrigerators, televisions, washing machines or furniture, etc.), game consoles, personal computers (PCs), ATMs or self-service machines and other answering device side devices. Wearable devices include: smart watches, smart bracelets, smart headphones, smart glasses, smart jewelry (smart bracelets, smart bracelets, smart rings, smart necklaces, smart anklets, smart anklets, etc.), smart wristbands, smart clothing, etc. Among them, the vehicle-mounted device can also be called a vehicle-mounted answering device, vehicle-mounted controller, vehicle-mounted module, vehicle-mounted component, vehicle-mounted chip or vehicle-mounted unit, etc. It should be noted that the specific type of terminal is not limited in the embodiments of this application.

[0083] The network-side device 13 may include an access network device or a core network device, wherein the access network device may also be referred to as a radio access network (RAN) device, a radio access network function, or a radio access network unit. The access network device may include a base station, a wireless local area network (WLAN) access point (AP), or a wireless fidelity (WiFi) node. Among them, the base station may be referred to as a Node B (NB), an evolved Node B (eNB), the next generation Node B (gNB), a new radio Node B (NR Node B), an access point, a relay station (RBS), a serving base station (SBS), a base transceiver station (BTS), a radio base station, a radio transceiver, a basic service set (BSS), an extended service set (ESS), a home Node B (HNB), a home evolved Node B (home evolved Node B), a transmission reception point (TRP), or other appropriate terms in the field. As long as the same technical effect is achieved, the base station is not limited to a specific technical vocabulary. It should be noted that in the embodiment of the present application, only the base station in the NR system is used as an example for introduction, and the specific type of the base station is not limited. In order to better understand the technical solution of the present application, the following contents are first introduced:

[0084] Backscatter Communication (BSC)

[0085] Backscatter communication refers to the use of radio frequency signals from other devices or the environment to modulate the signal and transmit its own information. Backscatter communication devices can be:

[0086] (1) The backscatter communication device in traditional radio frequency identification (RFID) is generally a tag, which belongs to the passive Internet of Things (IoT) device (Passive-IoT).

[0087] (2) Semi-passive IoT devices, which have a certain amplification capability for downlink reception or uplink reflection;

[0088] (3) Devices with active transmission capabilities (active devices). This type of terminal can send information to a reader without relying on the reflection of the incident signal.

[0089] The energy source of this type of device can come from the environment, such as ambient RF signals, thermal energy, kinetic energy, wind energy, etc., and it can also be called Ambient IoT device.

[0090] FIG1b shows a BSC communication scenario, in which the transmission from the reading / writing device (ie, the reader in the figure) to the answering device (ie, the tag in the figure) is downlink transmission, and the transmission from the answering device to the reading / writing device is uplink transmission.

[0091] A simple implementation method is that when the tag needs to send a '1', the tag reflects the incident carrier signal, and when the tag needs to send a '0', it does not reflect.

[0092] Refer to Figure 1c, which shows the BSC communication principle. The backscatter communication device controls the circuit's reflection coefficient Γ by adjusting its internal impedance, thereby changing the amplitude, frequency, phase, etc. of the incident signal to achieve signal modulation. The signal reflection coefficient can be expressed as:

[0093] Γ=(Z_1-Z_0) / (Z_1+Z_0)=|Γ|e^(jθ_T)

[0094] Where Z_0 is the antenna characteristic impedance, and Z_1 is the load impedance. Assuming the incident signal is S_in(t), the output signal is S_out(t) = S_in(t)|Γ|e^(jθ_T). Therefore, by properly controlling the reflection coefficient, corresponding amplitude modulation, frequency modulation, or phase modulation can be achieved.

[0095] Information transmission between reader and tag in RFID

[0096] Referring to FIG. 1d , the instructions for the Reader operation may be as shown in Table 1 below:

[0097] Table 1

[0098] The status of the Tag tag can be shown in Table 2 below:

[0099] Table 2

[0100] Sending and Receiving Process

[0101] As shown in Figure 1e, the current UHF (Ultra High Frequency) RFID protocol design in inventory mode requires that the reader sends a query command (Query), and the tag responds (Reply), generating a 16-bit random number and sending it to the reader. The reader then sends this sequence to the tag via an ACK command, and the tag sends the relevant data to the reader.

[0102] Indication of reverse transmission parameters

[0103] Traditionally, the tag's reverse transmission parameters require the reader to indicate them in a control command. The tag then demodulates the downlink control command and determines the reverse transmission parameters based on the reverse transmission parameter information carried in the command. For example, the control command indicates the backscattered data rate, backscattered signal power, etc.

[0104] The reverse transmission data rate and signal power of a transponder can be indicated by control commands, but this requires additional signaling length and increases the complexity of resource mapping. Therefore, a method is needed to obtain the reverse transmission data rate and signal power of a transponder without signaling.

[0105] The following describes in detail the transmission parameter determination method provided in the embodiments of the present application through some embodiments and their application scenarios in combination with the accompanying drawings.

[0106] First, let’s explain the execution terms in the plan:

[0107] Tags mentioned in this article are collectively described as transponder devices, and readers / base stations / IABs / NCRs / RISs are collectively described as read / write devices.

[0108] Transponder: In one possible implementation, this could be a tag, an electronic tag, or RFID tag, which is the common name for RFID. RFID stands for Radio Frequency Identification. RFID technology can be categorized as active, passive, and semi-active. Passive tags can also be referred to as passive IoT devices. Transponders can communicate using backscattered RF signals, or some active tags can generate active signals. Because transponders can draw energy from the environment, such as ambient RF energy, thermal energy, wind energy, kinetic energy, etc., they are also referred to as ambient IoT. They can also be considered a terminal, or a terminal device.

[0109] Reader / Writer: A handheld or fixed device that reads (and sometimes writes) tag information. It can also be understood as a device that communicates with the tag, such as a terminal, a base station, or a device with read / write functions, such as a reader / writer. The specifics are not limited here.

[0110] 2 , the present application provides a method for determining transmission parameters. The method is performed by a response device and includes:

[0111] Step 201: The answering device detects a resource group set carrying downlink control signaling;

[0112] Step 202: The response device determines a reverse transmission parameter based on the number of resource groups included in the resource group set;

[0113] The corresponding relationship between the number of resource groups included in the resource group set and the reverse transmission parameter is indicated by the read / write device or predefined by the protocol. The reverse transmission parameter includes at least one of the following:

[0114] The signal power transmitted by the answering device;

[0115] The data rate transmitted by the answering device;

[0116] The number of information bits transmitted by the answering device;

[0117] The type of information transmitted by the answering machine.

[0118] It should be noted that the correspondence between the number of resource groups included in the above-mentioned resource group set and the reverse transmission parameters can be carried in the downlink control command, that is, the correspondence is indicated by the read-write device, or the correspondence between the number of resource groups included in the above-mentioned resource group set and the reverse transmission parameters is predefined by the protocol, that is, a pre-set correspondence rule.

[0119] It should be noted that the number of resource groups and frequency domain positions included in the resource group carrying the downlink control command are predefined or preconfigured by the network.

[0120] In an embodiment of the present application, the number of resource groups included in the resource group set is used to implicitly indicate the reverse transmission parameters to the response device, which can save the overhead of signaling indication and reduce the complexity of resource mapping. In addition, the various parameters of the backscatter transmission can be flexibly indicated based on the number of resource groups included in the resource group set, thereby improving the flexibility and reliability of the transmission.

[0121] In a possible implementation, the answering device determines the signal power transmitted by the answering device according to the number of resource groups included in the resource group set, including:

[0122] When the number of resource groups included in the resource group set is less than or equal to the first threshold, the signal power transmitted by the answering device is the first power;

[0123] When the number of resource groups included in the resource group set is greater than the first threshold, the signal power transmitted by the answering device is the second power;

[0124] The first threshold is indicated by the read / write device or predefined by the protocol, and the first power is less than the second power.

[0125] In an embodiment of the present application, a resource group set threshold value N1, that is, the above-mentioned first threshold, is set. If the number N of resource groups included in the resource group set detected by the response device is less than or equal to N1, the signal power transmitted by the response device is determined to be P1, that is, the above-mentioned first power; if the number N of resource groups included in the resource group set detected by the response device is greater than N1, the signal power transmitted by the response device is determined to be P2, that is, the above-mentioned second power.

[0126] Specifically, the signal power transmitted by the above-mentioned answering device is the signal power of uplink transmission. Optionally, the uplink transmission signal power may be applied to an answering device of device C type, such as an active type Tag.

[0127] In a possible implementation, the answering device determines the data rate transmitted by the answering device according to the number of resource groups included in the resource group set, including:

[0128] When the number of resource groups included in the resource group set is less than or equal to the second threshold, the data rate transmitted by the answering device is the first rate;

[0129] When the number of resource groups included in the resource group set is greater than the second threshold, the data rate transmitted by the answering device is the second rate;

[0130] The second threshold is indicated by the read / write device or predefined by the protocol, and the first rate is less than the second rate.

[0131] In an embodiment of the present application, a resource group set threshold value N2, that is, the above-mentioned second threshold, is set. If the number N of resource groups included in the resource group set detected by the response device is less than or equal to N2, the data rate transmitted by the response device is determined to be D1, that is, the above-mentioned first rate; if the number N of resource groups included in the resource group set detected by the response device is greater than N2, the data rate transmitted by the response device is determined to be D2, that is, the above-mentioned second rate.

[0132] In a possible implementation, the answering device determines the number of information bits transmitted by the answering device according to the number of resource groups included in the resource group set, including:

[0133] When the number of resource groups included in the resource group set is less than or equal to the third threshold, the number of information bits transmitted by the answering device is the first number of bits;

[0134] When the number of resource groups included in the resource group set is greater than the third threshold, the number of information bits transmitted by the answering device is the second number of bits;

[0135] The third threshold is indicated by the read / write device or predefined by the protocol, and the first number of bits is smaller than the second number of bits, or the first number of bits is larger than the second number of bits.

[0136] In an embodiment of the present application, a resource group set threshold value N3, that is, the above-mentioned third threshold, is set. If the number N of resource groups included in the resource group set detected by the response device is less than or equal to N3, then the number of information bits transmitted by the response device is determined to be S1, that is, the above-mentioned first number of bits; if the number N of resource groups included in the resource group set detected by the response device is greater than N3, then the number of information bits transmitted by the response device is determined to be S2, that is, the above-mentioned second number of bits.

[0137] It should be noted that, for the case where the above-mentioned first number of bits is greater than the second number of bits, the case where the number of downlink resources is larger may be that the number of available resources is larger, and the number of resources for uplink transmission is also larger, so that more bits can be sent; for the case where the above-mentioned first number of bits is smaller than the second number of bits, it may be due to poor downlink coverage, and more resources need to be provided to meet the downlink coverage requirements, so that fewer bits need to be sent during uplink transmission; the specific relationship between the first number of bits and the second number of bits can be flexibly adjusted based on the actual transmission situation.

[0138] In a possible implementation, the response device determines the type of information transmitted by the response device according to the number of resource groups included in the resource group set, including:

[0139] When the number of resource groups included in the resource group set is less than or equal to a fourth threshold, the type of information transmitted by the answering device is the first type;

[0140] When the number of resource groups included in the resource group set is greater than a fourth threshold, the type of information transmitted by the answering device is the second type;

[0141] The fourth threshold is indicated by the reading and writing device or predefined by the protocol, the first type of information includes at least one of a random number and a random sequence, and the second type of information includes at least one of an identification of the answering device and data information.

[0142] In an embodiment of the present application, a resource group set threshold value N4, that is, the above-mentioned fourth threshold, is set. If the number N of resource groups contained in the resource group set detected by the response device is less than or equal to N4, then the type of information transmitted by the response device is determined to be type 1, that is, the above-mentioned first type; if the number N of resource groups contained in the resource group set detected by the response device is greater than N4, then the type of information transmitted by the response device is determined to be type 2, that is, the above-mentioned second type.

[0143] It should be noted that the random number in the above-mentioned first type of information can specifically be a 16-bit random number defined in the relevant protocol, or can also be a random number of other lengths, which can be flexibly adjusted based on actual transmission requirements.

[0144] It should be noted that the first to fourth thresholds mentioned above can be set to the same value in specific implementation, that is, N1=N2=N3=N4, or can be set to different values, which can be flexibly adjusted according to actual needs.

[0145] In a possible implementation, the answering device determines the data rate transmitted by the answering device according to the number of resource groups included in the resource group set, including:

[0146] The answering device determines, based on the number of resource groups included in the resource group set, parameters related to a data rate transmitted by the answering device;

[0147] The answering device determines the data rate of the answering device transmission based on relevant parameters;

[0148] In an embodiment of the present application, the number of resource groups included in the resource group set can be used to indicate relevant parameters of the data rate transmitted by the response device. After the response device determines the relevant parameters of the data rate transmitted based on the number of resource groups included in the resource group set, it determines the data rate transmitted according to the relevant parameters.

[0149] The relevant parameters include at least one of the following:

[0150] (1) The encoding method of the signal to be sent by the answering device;

[0151] (2) The transmission data rate corresponding to the operating frequency of the signal to be transmitted by the transponder; the operating frequency may be the backscattered frequency (BLF) of the transponder;

[0152] (3) The modulation mode of the signal to be transmitted by the answering device; for example, binary on-off keying (OOK), binary phase shift keying (BPSK), quadrature phase shift keying (QPSK), differential binary phase shift keying (DBPSK), or offset quadrature phase shift keying (O-QPSK).

[0153] (4) The modulation and coding scheme (MCS) level corresponding to the signal to be sent by the answering device;

[0154] (5) The coding rate corresponding to the signal to be sent by the answering device;

[0155] (6) The number of repetitions of the signal to be sent by the answering device.

[0156] In one possible implementation, the encoding method of the signal to be sent by the answering device includes at least one of the following:

[0157] (1) Miller2 coding; Miller coding, also known as delay modulation coding;

[0158] (2) Miller4 encoding;

[0159] (3) Miller8 encoding;

[0160] (4) Manchester coding; Manchester coding, also known as split phase code, synchronous code, and phase coding;

[0161] (5) FM0 coding: FM0 (Bi-Phase Space Coding) is the full name of Bi-Phase Space Coding.

[0162] (6) Polar coding; that is, polarization code coding.

[0163] In a possible implementation, the division of the resource group set satisfies:

[0164] Frequency domain resources are divided into multiple resource groups, and the multiple resource groups constitute a resource group set.

[0165] In an embodiment of the present application, a certain frequency domain resource is divided into multiple frequency domain segments according to the operating bandwidth of the read / write device to form a resource group.

[0166] In a possible implementation, the number of resource groups included in the resource group set is preconfigured or predefined by a protocol.

[0167] In a possible implementation, the response device detects a resource group set carrying downlink control signaling, including:

[0168] The answering device detects the preamble sequence of the downlink control signaling and determines the number of resource groups included in the resource group set according to the preamble sequence;

[0169] or,

[0170] The answering device blindly detects the resource group set and determines the number of resource groups included in the resource group set.

[0171] In the embodiment of the present application, the answering device may detect the resource group set in the following manner:

[0172] (1) Determine the number of resource groups in a resource group set based on the preamble sequence of the downlink control signaling. That is, the reader / writer maps the downlink control signaling onto the resource group in the form of data. At the same time, a known preamble sequence is set before each resource group. The design of this preamble sequence is related to the number of resource groups in the resource group set. After the answering device detects a resource group, it can detect the preamble sequence before the data to determine the number of resource groups in the resource group set, determine the reverse transmission parameters, and improve the reliability of the transmission.

[0173] (2) The answering device blindly detects the resource group set. Specifically, the answering device detects downlink control commands on resource group sets consisting of different numbers of resource groups. That is, the answering device attempts to detect control commands based on different numbers of resource groups. If the control command cannot be detected, it indicates that the currently attempted number of resource groups is incorrect, and the answering device continues to try other numbers of resource groups. If the downlink control command can be demodulated, it can be determined that the currently attempted number of resource groups is correct, and the reverse transmission parameters can be determined based on the number of resource groups.

[0174] 3 , an embodiment of the present application provides a method for determining transmission parameters. The method is performed by a read / write device and includes:

[0175] Step 301: The read / write device maps the downlink control signaling to a resource group in a resource group set;

[0176] Step 302: The reader / writer device sends a downlink control signaling to the answering device;

[0177] The number of resource groups included in the resource group set indicates a reverse transmission parameter of the response device. The corresponding relationship between the number of resource groups included in the resource group set and the reverse transmission parameter is indicated by the read / write device or predefined by the protocol. The reverse transmission parameter includes at least one of the following:

[0178] The signal power transmitted by the answering device;

[0179] The data rate transmitted by the answering device;

[0180] The number of information bits transmitted by the answering device;

[0181] The type of information transmitted by the answering machine.

[0182] It should be noted that the read / write device is the opposite side of the answering device, and the relevant descriptions in the read / write device side method can directly refer to the relevant descriptions in the answering device side method, and will not be repeated here.

[0183] In a possible implementation manner, the number of resource groups included in the resource group set indicates the signal power transmitted by the answering device, including:

[0184] In a case where the number of resource groups included in the resource group set is less than or equal to a first threshold, instructing the answering device to transmit a signal with a first power;

[0185] When the number of resource groups included in the resource group set is greater than the first threshold, instructing the answering device to transmit a signal with a second power;

[0186] The first threshold is indicated by the read / write device or predefined by the protocol, and the first power is less than the second power.

[0187] In a possible implementation, the number of resource groups included in the resource group set indicates a data rate transmitted by the answering device, including:

[0188] In a case where the number of resource groups included in the resource group set is less than or equal to a second threshold, instructing the answering device to transmit data at a first rate;

[0189] In a case where the number of resource groups included in the resource group set is greater than a second threshold, instructing the answering device to transmit data at a second rate;

[0190] The second threshold is indicated by the read / write device or predefined by the protocol, and the first rate is less than the second rate.

[0191] In a possible implementation manner, the number of resource groups included in the resource group set indicates the number of information bits transmitted by the response device, including:

[0192] When the number of resource groups included in the resource group set is less than or equal to a third threshold, instructing the answering device to transmit a first number of information bits;

[0193] When the number of resource groups included in the resource group set is greater than a third threshold, instructing the answering device to transmit a second number of information bits;

[0194] The third threshold is indicated by the read / write device or predefined by the protocol, and the first number of bits is smaller than the second number of bits, or the first number of bits is larger than the second number of bits.

[0195] In a possible implementation, the number of resource groups included in the resource group set indicates the type of information transmitted by the response device, including:

[0196] In a case where the number of resource groups included in the resource group set is less than or equal to a fourth threshold, instructing the answering device to transmit information of the first type;

[0197] In a case where the number of resource groups included in the resource group set is greater than a fourth threshold, instructing the answering device to transmit information of the second type;

[0198] The fourth threshold is indicated by the reading and writing device or predefined by the protocol, the first type of information includes at least one of a random number and a random sequence, and the second type of information includes at least one of an identification of the answering device and data information.

[0199] In a possible implementation, the number of resource groups included in the resource group set indicates a data rate transmitted by the answering device, including:

[0200] The number of resource groups included in the resource group set indicates parameters related to the data rate transmitted by the answering device;

[0201] The relevant parameters include at least one of the following:

[0202] The encoding method of the signal to be sent by the answering device;

[0203] The transmission data rate corresponding to the operating frequency of the signal to be sent by the transponder;

[0204] The modulation method of the signal to be sent by the answering device;

[0205] The MCS level corresponding to the signal to be sent by the answering device;

[0206] The coding rate corresponding to the signal to be sent by the answering device;

[0207] The number of repetitions of the signal to be sent by the answering machine.

[0208] In one possible implementation, the encoding method of the signal to be sent by the answering device includes at least one of the following:

[0209] Miller2 encoding;

[0210] Miller4 encoding;

[0211] Miller8 encoding;

[0212] Manchester encoding;

[0213] FM0 encoding;

[0214] polar encoding.

[0215] In a possible implementation, the division of the resource group set satisfies:

[0216] Frequency domain resources are divided into multiple resource groups, and the multiple resource groups constitute a resource group set.

[0217] In a possible implementation, the number of resource groups included in the resource group set is preconfigured or predefined by a protocol.

[0218] In one possible implementation, the method further includes:

[0219] The read / write device sets the leading sequence of the downlink control signaling;

[0220] The leading sequence indicates the number of resource groups included in the resource group set.

[0221] The technical solution of this application is described below in conjunction with specific application examples:

[0222] Example 1: Correspondence between resource group sets and resource groups

[0223] Based on the bandwidth of the read / write device, a frequency domain resource segment is divided into multiple frequency domain segments to form resource groups. The size of the resource groups (i.e., the number of resource groups included in the resource group set) and the frequency domain location can be preconfigured. The guard interval between resource groups is preconfigured / predefined, as shown in Figure 4a.

[0224] The concept of a resource group set refers to different numbers of resource groups as a set. For example, if there are four resource groups, when the resource group set is 1, each group has only one resource group. In this case, there are four groups with a resource group set of 1. When the resource group set is 2, each group has two resource groups. In this case, there are two groups with a resource group set of 2. When the resource group set is 4, each group has four resource groups. In this case, there is one group with a resource group set of 4. The possible values ​​of the resource group set are {1, 2, 4, 8}, as shown in Figure 4b.

[0225] As shown in Figure 4b, when a downlink control command is mapped to a resource group in resource group set 1, possible mapping resource groups are [resource group 1], [resource group 2], [resource group 3], or [resource group 4]. When a downlink control command is mapped to a resource group in resource group set 2, possible mapping locations are [resource group 1, resource group 2], or [resource group 3, resource group 4]. When a downlink control command is mapped to a resource group in resource group set 4, possible mapping locations are [resource group 1, resource group 2, resource group 3, resource group 4].

[0226] Example 2: Correspondence between resource group sets and resource groups

[0227] Since the answering device does not know the specific resource group set to which the read / write device sends the resource group, the answering device needs to perform a blind detection process. Blindly detect the signaling carried in the resource group from the possible resource group sets. For example, the read / write device maps the control command to the resource group with a resource group set of 4. At this time, the answering device starts blind detection from a resource group set size of 1, and cannot correctly detect the downlink control command. Then, it starts blind detection from a resource group set size of 2, and still cannot correctly detect the downlink control command. It starts blind detection from a resource group set size of 4, which is consistent with the resource group set to which the read / write device sends data, so the downlink control command can be blindly detected. At this point, the answering device knows the resource group set used by the read / write device, and determines at least one of the following parameters based on the binding relationship between the resource group set and the reverse transmission parameters of the answering device:

[0228] The signal power transmitted by the answering device;

[0229] The data rate transmitted by the answering device;

[0230] The number of information bits transmitted by the answering device;

[0231] The type of signal transmitted by the answering device;

[0232] Determine the size of the resource group set through blind detection, and then determine the reverse transmission parameters to improve transmission reliability;

[0233] Specifically, as shown in Figure 4c, if the downlink control command is mapped on four transmission resource groups, the answering device performs blind detection on the downlink transmission resources with a resource group set size of 1. After four blind detections, the answering device cannot detect the control command, and thus cannot determine the number of resource groups occupied by the downlink transmission resources.

[0234] Similarly, as shown in FIG4 d , when the answering device performs detection with a resource group set size of 2, it cannot detect the downlink control command after two blind detections, and thus cannot determine the number of resource groups occupied by the downlink transmission resources.

[0235] As shown in Figure 4e, since the downlink control command occupies four resource groups, when the responding device detects with a resource group set size of 4, it can demodulate the downlink control command, thereby determining that the number of downlink resource groups is 4. According to the binding relationship between the resource group set size and the reverse transmission, the reverse transmission parameters can be determined.

[0236] Example 3: The response device determines the size of the resource group set based on a certain resource group

[0237] In one embodiment, the control commands of the read / write device are mapped to multiple resource groups. In this case, if only one resource group is detected, it is impossible to demodulate the carried control commands or determine the number of resource groups included in the resource group set.

[0238] One feasible approach is to design the preamble sequence preceding the data, designing different preamble sequences for different resource group set sizes, and these sequences are known to both the reader and the answering device. Assume that the reader's control command is mapped to four resource groups, each with a corresponding preamble sequence. When the answering device detects the preamble sequence on one or more resource groups, it can quickly determine the number of resource groups contained in the downlink resource group set carrying the control command based on the binding relationship between the preamble sequence and the resource group set, thereby demodulating the carried downlink control command. Furthermore, based on the binding relationship between the resource group set size and the answering device's reverse transmission parameters, it can determine the reverse transmission parameters, thereby improving transmission reliability.

[0239] As shown in Figure 4f, the read-write device maps the control commands in the form of data onto the four resource groups. At the same time, there is a known preamble sequence before each resource group. The design of the preamble sequence is related to the number of resource groups contained in the resource group set. For example, when the resource group set size is 4, the format of the preamble sequence is: preamble sequence_4, and when the resource group set size is 2, the format of the preamble sequence is: preamble sequence_2.

[0240] On the receiving end, if only one resource group is detected and the data carried by that resource group is Data_1, the control command cannot be demodulated because it is not the complete data length. However, the preamble sequence preceding the data can be detected. Based on preamble sequence_4, the responding device knows that the resource group set used by the read / write device is 4. In this case, the responding device can directly detect the resource group set formed by four adjacent resource groups, thereby improving detection speed. Furthermore, based on the number of resource groups contained in the resource group set and its binding relationship with the transmit power / data rate, the reverse transmission parameters are determined to improve transmission reliability.

[0241] Example 4: Determining reverse transmission parameters based on the number of resource groups included in a resource group set

[0242] After the answering device detects the number of resource groups included in the resource group set carrying the downlink control command, it can determine the corresponding reverse transmission parameter according to the binding relationship between the number of resource groups included in the resource group set and the reverse transmission parameter. The binding relationship can be the following:

[0243] One embodiment defines a reference resource group set N1. When the resource group set N carrying downlink control commands is less than or equal to N1, the uplink signal power of the response device is P1. When the resource group set N carrying downlink control commands is greater than or equal to N1, the uplink signal power of the response device is P2. The signal power P1 is less than P2. Of course, defining multiple reference resource group set sizes does not rule out the possibility of using the corresponding uplink transmission signal power when N falls within a certain reference resource group set range. For response devices with defined uplink power, this can be a Device C type device with signal power adjustment capabilities.

[0244] Another possible embodiment is to define a reference resource group set N1. When the resource group set N carrying downlink control commands is less than or equal to N1, the uplink data rate of the response device is D1. When the resource group set N carrying downlink control commands is greater than or equal to N1, the uplink data rate of the response device is D2. Data transmission rate D1 is greater than D2. Of course, it is not impossible to define multiple reference resource group set sizes. When N falls within a certain reference resource group set range, the response device adopts the corresponding uplink transmission data rate to improve transmission reliability.

[0245] Another possible embodiment is to define a reference resource group set N1. When the resource group set N carrying downlink control commands is less than or equal to N1, the number of information bits transmitted uplink by the response device is S1. When the resource group set N carrying downlink control commands is greater than or equal to N1, the number of information bits transmitted uplink by the response device is S2. When there are a large number of downlink resources, this may be because there are more available resources, so there are also more resources for uplink transmission, allowing more bits to be sent, in which case the number of bits S1 is less than the number of bits S2. Alternatively, it may be because the downlink coverage is poor, requiring more downlink resources to meet the downlink coverage requirement, resulting in fewer bits being sent uplink, such that the number of bits S1 exceeds the number of bits S2. Of course, it is not ruled out that multiple reference resource group set sizes can be defined. When N falls within a certain reference resource group set range, the response device uses the corresponding number of uplink transmission bits.

[0246] Example 5: Determining reverse transmission parameters based on the number of resource groups included in the resource group set

[0247] In another possible embodiment, the device determines the type of information to be reported according to the detected resource group set size. The information type may be:

[0248] a) Report RN16, random number, and random sequence (the number of transmitted data bits is small, corresponding to poor coverage);

[0249] b) Report at least one item of device identification (ID) and data information (more data bits are transmitted, corresponding to better coverage).

[0250] The transmission parameter determination method provided in the embodiment of the present application can be executed by a transmission parameter determination device. In the embodiment of the present application, the transmission parameter determination device performing the transmission parameter determination method is used as an example to illustrate the transmission parameter determination device provided in the embodiment of the present application.

[0251] 5 , an embodiment of the present application provides a transmission parameter determination apparatus, which can be applied to a response device and includes:

[0252] A detection module 501 is configured to detect, by a response device, a resource group set carrying downlink control signaling;

[0253] A determination module 502 is configured for the response device to determine a reverse transmission parameter according to the number of resource groups included in the resource group set;

[0254] The corresponding relationship between the number of resource groups included in the resource group set and the reverse transmission parameter is indicated by a read / write device or predefined by a protocol, and the reverse transmission parameter includes at least one of the following:

[0255] the signal power transmitted by the transponder;

[0256] the data rate transmitted by the transponder;

[0257] the number of information bits transmitted by the transponder;

[0258] The type of information transmitted by the answering device.

[0259] Optionally, the determining module is specifically configured to:

[0260] When the number of resource groups included in the resource group set is less than or equal to a first threshold, the signal power transmitted by the answering device is a first power;

[0261] When the number of resource groups included in the resource group set is greater than a first threshold, the signal power transmitted by the answering device is a second power;

[0262] The first threshold is indicated by a read / write device or predefined by a protocol, and the first power is less than the second power.

[0263] Optionally, the determining module is specifically configured to:

[0264] When the number of resource groups included in the resource group set is less than or equal to a second threshold, the data rate transmitted by the answering device is a first rate;

[0265] When the number of resource groups included in the resource group set is greater than a second threshold, the data rate transmitted by the answering device is a second rate;

[0266] The second threshold is indicated by a read / write device or predefined by a protocol, and the first rate is less than the second rate.

[0267] Optionally, the determining module is specifically configured to:

[0268] When the number of resource groups included in the resource group set is less than or equal to a third threshold, the number of information bits transmitted by the response device is a first number of bits;

[0269] When the number of resource groups included in the resource group set is greater than a third threshold, the number of information bits transmitted by the response device is a second number of bits;

[0270] The third threshold is indicated by the read / write device or predefined by the protocol, the first number of bits is smaller than the second number of bits, or the first number of bits is larger than the second number of bits.

[0271] Optionally, the determining module is specifically configured to:

[0272] When the number of resource groups included in the resource group set is less than or equal to a fourth threshold, the type of information transmitted by the response device is the first type;

[0273] When the number of resource groups included in the resource group set is greater than a fourth threshold, the type of information transmitted by the response device is the second type;

[0274] The fourth threshold is indicated by the reading and writing device or predefined by the protocol, the first type of information includes at least one of a random number and a random sequence, and the second type of information includes at least one of an identification of the answering device and data information.

[0275] Optionally, the determining module is specifically configured to:

[0276] The answering device determines, according to the number of resource groups included in the resource group set, parameters related to a data rate transmitted by the answering device;

[0277] The answering device determines, based on the relevant parameters, a data rate at which the answering device transmits;

[0278] The relevant parameters include at least one of the following:

[0279] The encoding method of the signal to be sent by the answering device;

[0280] a transmission data rate corresponding to the operating frequency of the signal to be sent by the transponder;

[0281] The modulation mode of the signal to be sent by the answering device;

[0282] a modulation and coding scheme (MCS) level corresponding to the signal to be sent by the answering device;

[0283] the coding rate corresponding to the signal to be sent by the answering device;

[0284] The number of repetitions of the signal to be sent by the transponder.

[0285] Optionally, the encoding method of the signal to be sent by the answering device includes at least one of the following:

[0286] Miller2 encoding;

[0287] Miller4 encoding;

[0288] Miller8 encoding;

[0289] Manchester encoding;

[0290] FM0 encoding;

[0291] polar encoding.

[0292] Optionally, the division of the resource group set satisfies:

[0293] Frequency domain resources are divided into multiple resource groups, and the multiple resource groups constitute a resource group set.

[0294] Optionally, the number of resource groups included in the resource group set is preconfigured or predefined by a protocol.

[0295] Optionally, the detection module is specifically configured to:

[0296] The response device detects a preamble sequence of the downlink control signaling, and determines the number of resource groups included in the resource group set according to the preamble sequence;

[0297] or,

[0298] The answering device blindly detects the resource group set and determines the number of resource groups included in the resource group set.

[0299] Optionally, the detection module is specifically configured to:

[0300] The response device attempts to detect the downlink control command on a resource group set consisting of different numbers of resource groups.

[0301] 6 , an embodiment of the present application provides a transmission parameter determination device, which can be applied to a read / write device, and includes:

[0302] Mapping module 601, configured for the reading and writing device to map downlink control signaling to a resource group in a resource group set;

[0303] A sending module 602 is configured for the reader / writer device to send the downlink control signaling to the answering device;

[0304] The number of resource groups included in the resource group set indicates a reverse transmission parameter of the response device. The corresponding relationship between the number of resource groups included in the resource group set and the reverse transmission parameter is indicated by the read / write device or predefined by the protocol. The reverse transmission parameter includes at least one of the following:

[0305] the signal power transmitted by the transponder;

[0306] the data rate transmitted by the transponder;

[0307] the number of information bits transmitted by the transponder;

[0308] The type of information transmitted by the answering device.

[0309] Optionally, the number of resource groups included in the resource group set indicates the signal power transmitted by the answering device, including:

[0310] In a case where the number of resource groups included in the resource group set is less than or equal to a first threshold, instructing the answering device to transmit a signal with a first power;

[0311] In a case where the number of resource groups included in the resource group set is greater than a first threshold, instructing the answering device to transmit a signal with a second power;

[0312] The first threshold is indicated by a read / write device or predefined by a protocol, and the first power is less than the second power.

[0313] Optionally, the number of resource groups included in the resource group set indicates a data rate transmitted by the response device, including:

[0314] In a case where the number of resource groups included in the resource group set is less than or equal to a second threshold, instructing the answering device to transmit data at a first rate;

[0315] In a case where the number of resource groups included in the resource group set is greater than a second threshold, instructing the answering device to transmit data at a second rate;

[0316] The second threshold is indicated by a read / write device or predefined by a protocol, and the first rate is less than the second rate.

[0317] Optionally, the number of resource groups included in the resource group set indicates the number of information bits transmitted by the response device, including:

[0318] In a case where the number of resource groups included in the resource group set is less than or equal to a third threshold, instructing the answering device to transmit a first number of information bits;

[0319] In a case where the number of resource groups included in the resource group set is greater than a third threshold, instructing the answering device to transmit a second number of information bits;

[0320] The third threshold is indicated by the read / write device or predefined by the protocol, the first number of bits is smaller than the second number of bits, or the first number of bits is larger than the second number of bits.

[0321] Optionally, the number of resource groups included in the resource group set indicates the type of information transmitted by the response device, including:

[0322] In a case where the number of resource groups included in the resource group set is less than or equal to a fourth threshold, indicating that the type of information transmitted by the response device is a first type;

[0323] In a case where the number of resource groups included in the resource group set is greater than a fourth threshold, indicating that the type of information transmitted by the response device is the second type;

[0324] The fourth threshold is indicated by the reading and writing device or predefined by the protocol, the first type of information includes at least one of a random number and a random sequence, and the second type of information includes at least one of an identification of the answering device and data information.

[0325] Optionally, the number of resource groups included in the resource group set indicates a data rate transmitted by the response device, including:

[0326] The number of resource groups included in the resource group set indicates a parameter related to a data rate transmitted by the answering device;

[0327] The relevant parameters include at least one of the following:

[0328] The encoding method of the signal to be sent by the answering device;

[0329] a transmission data rate corresponding to the operating frequency of the signal to be sent by the transponder;

[0330] The modulation mode of the signal to be sent by the answering device;

[0331] The MCS level corresponding to the signal to be sent by the answering device;

[0332] the coding rate corresponding to the signal to be sent by the answering device;

[0333] The number of repetitions of the signal to be sent by the transponder.

[0334] Optionally, the encoding method of the signal to be sent by the answering device includes at least one of the following:

[0335] Miller2 encoding;

[0336] Miller4 encoding;

[0337] Miller8 encoding;

[0338] Manchester encoding;

[0339] FM0 encoding;

[0340] polar encoding.

[0341] Optionally, the division of the resource group set satisfies:

[0342] Frequency domain resources are divided into multiple resource groups, and the multiple resource groups constitute a resource group set.

[0343] Optionally, the number of resource groups included in the resource group set is preconfigured or predefined by a protocol.

[0344] Optionally, the device further includes:

[0345] A setting module, used for the read / write device to set the leading sequence of the downlink control signaling;

[0346] The leading sequence indicates the number of resource groups included in the resource group set.

[0347] The transmission parameter determination device in the embodiments of the present application can be an electronic device, such as an electronic device with an operating system, or a component of an electronic device, such as an integrated circuit or chip. The electronic device can be a terminal or other device other than a terminal. For example, the terminal can include but is not limited to the types of terminal 11 listed above, and other devices can include servers, network attached storage (NAS), etc., which are not specifically limited in the embodiments of the present application.

[0348] The transmission parameter determination device provided in the embodiment of the present application can implement the various processes implemented in the method embodiments of Figures 2 to 4f and achieve the same technical effects. To avoid repetition, they will not be described here.

[0349] As shown in FIG7 , an embodiment of the present application further provides a communication device 700, comprising a processor 701 and a memory 702. The memory 702 stores a program or instruction that can be executed on the processor 701. For example, when the communication device 700 is a response device, the program or instruction, when executed by the processor 701, implements the various steps of the above-described response device-side method embodiment and can achieve the same technical effect. When the communication device 700 is a read / write device, the program or instruction, when executed by the processor 701, implements the various steps of the above-described read / write device-side method embodiment and can achieve the same technical effect. To avoid repetition, these steps will not be described here.

[0350] The present application also provides a terminal comprising a processor and a communication interface coupled to the processor, the communication interface being configured to execute a program or instruction to implement the steps of the method embodiment shown in Figures 2 or 3. This terminal embodiment corresponds to the aforementioned method embodiment on the answering device side or the method embodiment on the reader / writer side. The various implementation processes and methods of the aforementioned method embodiments are applicable to this terminal embodiment and achieve the same technical effects. Specifically, Figure 8 is a schematic diagram of the hardware structure of a terminal implementing the present application embodiment.

[0351] The terminal 800 includes but is not limited to: a radio frequency unit 801, a network module 802, an audio output unit 803, an input unit 804, a sensor 805, a display unit 806, a user input unit 807, an interface unit 808, a memory 809 and at least some of the components of the processor 810.

[0352] Those skilled in the art will appreciate that the terminal 800 may further include a power supply (e.g., a battery) to power various components. The power supply may be logically connected to the processor 810 via a power management system, thereby enabling the power management system to manage charging, discharging, and power consumption. The terminal structure shown in FIG8 does not limit the terminal. The terminal may include more or fewer components than shown, or may combine certain components or arrange the components differently, which will not be described in detail here.

[0353] It should be understood that in an embodiment of the present application, the input unit 804 may include a graphics processing unit (GPU) 8041 and a microphone 8042, and the graphics processor 8041 processes the image data of a static picture or video obtained by an image capture device (such as a camera) in a video capture mode or an image capture mode. The display unit 806 may include a display panel 8061, and the display panel 8061 may be configured in the form of a liquid crystal display, an organic light emitting diode, etc. The user input unit 807 includes a touch panel 8071 and at least one of other input devices 8072. The touch panel 8071 is also called a touch screen. The touch panel 8071 may include two parts: a touch detection device and a touch controller. Other input devices 8072 may include, but are not limited to, a physical keyboard, function keys (such as volume control keys, switch keys, etc.), a trackball, a mouse, and a joystick, which will not be repeated here.

[0354] In this embodiment of the present application, if the terminal is a transponder, the RF unit 801 can receive downlink data from the reader / writer device and transmit it to the processor 810 for processing. Furthermore, the RF unit 801 can send uplink data to the reader / writer device. If the terminal is a reader / writer device, the RF unit 801 can receive uplink data from the transponder device and transmit it to the processor 810 for processing. Furthermore, the RF unit 801 can send uplink data to the transponder device. Typically, the RF unit 801 includes, but is not limited to, an antenna, an amplifier, a transceiver, a coupler, a low-noise amplifier, a duplexer, and the like.

[0355] The memory 809 can be used to store software programs or instructions and various data. The memory 809 may mainly include a first storage area for storing programs or instructions and a second storage area for storing data, wherein the first storage area may store an operating system, applications or instructions required for at least one function (such as a sound playback function, an image playback function, etc.). In addition, the memory 809 may include a volatile memory or a non-volatile memory. Among them, the non-volatile memory may be a read-only memory (ROM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), an electrically erasable programmable read-only memory (EEPROM), or a flash memory. The volatile memory may 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 RAM bus random access memory (DRRAM). The memory 809 in the embodiment of the present application includes but is not limited to these and any other suitable types of memory.

[0356] Processor 810 may include one or more processing units. Optionally, processor 810 integrates an application processor and a modem processor. The application processor primarily handles operations related to the operating system, user interface, and application programs, while the modem processor primarily processes wireless communication signals, such as a baseband processor. It is understood that the modem processor may not be integrated into processor 810.

[0357] In the case where the terminal is an answering device,

[0358] Processor 810, configured to detect, by a response device, a resource group set carrying downlink control signaling;

[0359] Processor 810, configured for the response device to determine a reverse transmission parameter according to the number of resource groups included in the resource group set;

[0360] The corresponding relationship between the number of resource groups included in the resource group set and the reverse transmission parameter is indicated by a read / write device or predefined by a protocol, and the reverse transmission parameter includes at least one of the following:

[0361] the signal power transmitted by the transponder;

[0362] the data rate transmitted by the transponder;

[0363] the number of information bits transmitted by the transponder;

[0364] The type of information transmitted by the answering device.

[0365] Optionally, the processor 810 is specifically configured to:

[0366] When the number of resource groups included in the resource group set is less than or equal to a first threshold, the signal power transmitted by the answering device is a first power;

[0367] When the number of resource groups included in the resource group set is greater than a first threshold, the signal power transmitted by the answering device is a second power;

[0368] The first threshold is indicated by a read / write device or predefined by a protocol, and the first power is less than the second power.

[0369] Optionally, the processor 810 is specifically configured to:

[0370] When the number of resource groups included in the resource group set is less than or equal to a second threshold, the data rate transmitted by the answering device is a first rate;

[0371] When the number of resource groups included in the resource group set is greater than a second threshold, the data rate transmitted by the answering device is a second rate;

[0372] The second threshold is indicated by a read / write device or predefined by a protocol, and the first rate is less than the second rate.

[0373] Optionally, the processor 810 is specifically configured to:

[0374] When the number of resource groups included in the resource group set is less than or equal to a third threshold, the number of information bits transmitted by the response device is a first number of bits;

[0375] When the number of resource groups included in the resource group set is greater than a third threshold, the number of information bits transmitted by the response device is a second number of bits;

[0376] The third threshold is indicated by the read / write device or predefined by the protocol, the first number of bits is smaller than the second number of bits, or the first number of bits is larger than the second number of bits.

[0377] Optionally, the processor 810 is specifically configured to:

[0378] When the number of resource groups included in the resource group set is less than or equal to a fourth threshold, the type of information transmitted by the response device is the first type;

[0379] When the number of resource groups included in the resource group set is greater than a fourth threshold, the type of information transmitted by the response device is the second type;

[0380] The fourth threshold is indicated by the reading and writing device or predefined by the protocol, the first type of information includes at least one of a random number and a random sequence, and the second type of information includes at least one of an identification of the answering device and data information.

[0381] Optionally, the processor 810 is specifically configured to:

[0382] The answering device determines, according to the number of resource groups included in the resource group set, parameters related to a data rate transmitted by the answering device;

[0383] The answering device determines, based on the relevant parameters, a data rate at which the answering device transmits;

[0384] The relevant parameters include at least one of the following:

[0385] The encoding method of the signal to be sent by the answering device;

[0386] a transmission data rate corresponding to the operating frequency of the signal to be sent by the transponder;

[0387] The modulation mode of the signal to be sent by the answering device;

[0388] a modulation and coding scheme (MCS) level corresponding to the signal to be sent by the answering device;

[0389] the coding rate corresponding to the signal to be sent by the answering device;

[0390] The number of repetitions of the signal to be sent by the transponder.

[0391] Optionally, the encoding method of the signal to be sent by the answering device includes at least one of the following:

[0392] Miller2 encoding;

[0393] Miller4 encoding;

[0394] Miller8 encoding;

[0395] Manchester encoding;

[0396] FM0 encoding;

[0397] polar encoding.

[0398] Optionally, the division of the resource group set satisfies:

[0399] Frequency domain resources are divided into multiple resource groups, and the multiple resource groups constitute a resource group set.

[0400] Optionally, the number of resource groups included in the resource group set is preconfigured or predefined by a protocol.

[0401] Optionally, the processor 810 is specifically configured to:

[0402] The response device detects a preamble sequence of the downlink control signaling, and determines the number of resource groups included in the resource group set according to the preamble sequence;

[0403] or,

[0404] The answering device blindly detects the resource group set and determines the number of resource groups included in the resource group set.

[0405] Optionally, the processor 810 is specifically configured to:

[0406] The response device attempts to detect the downlink control command on a resource group set consisting of different numbers of resource groups.

[0407] In the case where the terminal is a read-write device,

[0408] Processor 810 is configured to read and write the device to map downlink control signaling to a resource group in a resource group set;

[0409] The radio frequency unit 801 is used for the reader / writer device to send the downlink control signaling to the answering device;

[0410] The number of resource groups included in the resource group set indicates a reverse transmission parameter of the response device. The corresponding relationship between the number of resource groups included in the resource group set and the reverse transmission parameter is indicated by the read / write device or predefined by the protocol. The reverse transmission parameter includes at least one of the following:

[0411] the signal power transmitted by the transponder;

[0412] the data rate transmitted by the transponder;

[0413] the number of information bits transmitted by the transponder;

[0414] The type of information transmitted by the answering device.

[0415] Optionally, the number of resource groups included in the resource group set indicates the signal power transmitted by the answering device, including:

[0416] In a case where the number of resource groups included in the resource group set is less than or equal to a first threshold, instructing the answering device to transmit a signal with a first power;

[0417] In a case where the number of resource groups included in the resource group set is greater than a first threshold, instructing the answering device to transmit a signal with a second power;

[0418] The first threshold is indicated by a read / write device or predefined by a protocol, and the first power is less than the second power.

[0419] Optionally, the number of resource groups included in the resource group set indicates a data rate transmitted by the response device, including:

[0420] In a case where the number of resource groups included in the resource group set is less than or equal to a second threshold, instructing the answering device to transmit data at a first rate;

[0421] In a case where the number of resource groups included in the resource group set is greater than a second threshold, instructing the answering device to transmit data at a second rate;

[0422] The second threshold is indicated by a read / write device or predefined by a protocol, and the first rate is less than the second rate.

[0423] Optionally, the number of resource groups included in the resource group set indicates the number of information bits transmitted by the response device, including:

[0424] In a case where the number of resource groups included in the resource group set is less than or equal to a third threshold, instructing the answering device to transmit a first number of information bits;

[0425] In a case where the number of resource groups included in the resource group set is greater than a third threshold, instructing the answering device to transmit a second number of information bits;

[0426] The third threshold is indicated by the read / write device or predefined by the protocol, the first number of bits is smaller than the second number of bits, or the first number of bits is larger than the second number of bits.

[0427] Optionally, the number of resource groups included in the resource group set indicates the type of information transmitted by the response device, including:

[0428] In a case where the number of resource groups included in the resource group set is less than or equal to a fourth threshold, indicating that the type of information transmitted by the response device is a first type;

[0429] In a case where the number of resource groups included in the resource group set is greater than a fourth threshold, indicating that the type of information transmitted by the response device is the second type;

[0430] The fourth threshold is indicated by the reading and writing device or predefined by the protocol, the first type of information includes at least one of a random number and a random sequence, and the second type of information includes at least one of an identification of the answering device and data information.

[0431] Optionally, the number of resource groups included in the resource group set indicates a data rate transmitted by the response device, including:

[0432] The number of resource groups included in the resource group set indicates a parameter related to a data rate transmitted by the answering device;

[0433] The relevant parameters include at least one of the following:

[0434] The encoding method of the signal to be sent by the answering device;

[0435] a transmission data rate corresponding to the operating frequency of the signal to be sent by the transponder;

[0436] The modulation mode of the signal to be sent by the answering device;

[0437] The MCS level corresponding to the signal to be sent by the answering device;

[0438] the coding rate corresponding to the signal to be sent by the answering device;

[0439] The number of repetitions of the signal to be sent by the transponder.

[0440] Optionally, the encoding method of the signal to be sent by the answering device includes at least one of the following:

[0441] Miller2 encoding;

[0442] Miller4 encoding;

[0443] Miller8 encoding;

[0444] Manchester encoding;

[0445] FM0 encoding;

[0446] polar encoding.

[0447] Optionally, the division of the resource group set satisfies:

[0448] Frequency domain resources are divided into multiple resource groups, and the multiple resource groups constitute a resource group set.

[0449] Optionally, the number of resource groups included in the resource group set is preconfigured or predefined by a protocol.

[0450] Optionally, the processor 810 is further configured to enable the read / write device to set a preamble sequence of the downlink control signaling;

[0451] The leading sequence indicates the number of resource groups included in the resource group set.

[0452] It can be understood that the implementation process of each implementation method mentioned in this embodiment can refer to the relevant description of the method embodiment and achieve the same or corresponding technical effects. To avoid repetition, it will not be repeated here.

[0453] The present application also provides a network-side device, including a processor and a communication interface, wherein the communication interface is coupled to the processor, and the processor is configured to execute a program or instruction to implement the steps of the method embodiment shown in FIG3 . This network-side device embodiment corresponds to the aforementioned read-write device method embodiment, and each implementation process and implementation method of the aforementioned method embodiment is applicable to this network-side device embodiment and can achieve the same technical effects.

[0454] Specifically, embodiments of the present application also provide a network-side device. As shown in Figure 9, network-side device 900 includes an antenna 91, a radio frequency device 92, a baseband device 93, a processor 94, and a memory 95. Antenna 91 is connected to radio frequency device y2. In the uplink direction, radio frequency device 92 receives information via antenna 91 and sends the received information to baseband device 93 for processing. In the downlink direction, baseband device 93 processes the information to be transmitted and sends it to radio frequency device 92. Radio frequency device 92 processes the received information and then sends it through antenna 91.

[0455] The method executed by the reading and writing device in the above embodiment can be implemented in the baseband device 93, which includes a baseband processor.

[0456] The baseband device 93 may include, for example, at least one baseband board, on which multiple chips are arranged, as shown in Figure 9, one of the chips is, for example, a baseband processor, which is connected to the memory 95 through a bus interface to call the program in the memory 95 and execute the read and write device operations shown in the above method embodiment.

[0457] The network side device may further include a network interface 96, which is, for example, a Common Public Radio Interface (CPRI).

[0458] Specifically, the network side device 900 of the embodiment of the present application also includes: instructions or programs stored in the memory 95 and can be run on the processor 94. The processor 94 calls the instructions or programs in the memory 905 to execute the methods executed by each module shown in Figure 6 and achieve the same technical effect. To avoid repetition, it will not be repeated here.

[0459] An embodiment of the present application also provides a readable storage medium, on which a program or instruction is stored. When the program or instruction is executed by a processor, the various processes of the above-mentioned method embodiment are implemented and the same technical effect can be achieved. To avoid repetition, it will not be repeated here.

[0460] The processor is the processor in the terminal described in the above embodiment. The readable storage medium includes a computer-readable storage medium, such as a computer read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk. In some examples, the readable storage medium may be a non-transitory readable storage medium.

[0461] An embodiment of the present application further provides a chip, which includes 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 various processes of the above-mentioned method embodiment and achieve the same technical effect. To avoid repetition, it will not be repeated here.

[0462] It should be understood that the chip mentioned in the embodiments of the present application can also be called a system-level chip, a system chip, a chip system or a system-on-chip chip, etc.

[0463] An embodiment of the present application further provides a computer program / program product, which is stored in a storage medium. The computer program / program product is executed by at least one processor to implement the various processes of the above-mentioned method embodiment and can achieve the same technical effect. To avoid repetition, it will not be repeated here.

[0464] An embodiment of the present application also provides a wireless communication system, including: a response device and a read-write device, wherein the response device can be used to execute the steps of the response device side method described above, and the read-write device can be used to execute the steps of the read-write device side method described above.

[0465] It should be noted that, in this article, the terms "comprise", "include" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "comprises a ..." does not exclude the presence of other identical elements in the process, method, article or device comprising the element. In addition, it should be pointed out that the scope of the methods and devices in the embodiments of the present application is not limited to performing functions in the order shown or discussed, and may also include performing functions in a substantially simultaneous manner or in the opposite order according to the functions involved. For example, the described method may be performed in an order different from that described, and various steps may also be added, omitted or combined. In addition, the features described with reference to certain examples may be combined in other examples.

[0466] Through the description of the above embodiments, those skilled in the art can clearly understand that the above-mentioned embodiment methods can be implemented by means of a computer software product plus a necessary general-purpose hardware platform, or of course, by hardware. The computer software product is stored in a storage medium (such as ROM, RAM, magnetic disk, optical disk, etc.) and includes a number of instructions for enabling a terminal or network-side device to execute the methods described in each embodiment of the present application.

[0467] The embodiments of the present application are described above in conjunction with the accompanying drawings, but the present application is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of this application, ordinary technicians in this field can also make many forms of implementation methods without departing from the purpose of this application and the scope of protection of the claims. These implementation methods are all within the protection of this application.

Claims

1. A method for determining a transmission parameter, comprising: The answering device detects a resource group set carrying downlink control signaling; The response device determines a reverse transmission parameter according to the number of resource groups included in the resource group set; The corresponding relationship between the number of resource groups included in the resource group set and the reverse transmission parameter is indicated by a read / write device or predefined by a protocol, and the reverse transmission parameter includes at least one of the following: The signal power transmitted by the transponder; the data rate transmitted by the transponder; the number of information bits transmitted by the answering device; The type of information transmitted by the answering device.

2. The method according to claim 1, wherein: The answering device determines the signal power transmitted by the answering device according to the number of resource groups included in the resource group set, including: When the number of resource groups included in the resource group set is less than or equal to a first threshold, the signal power transmitted by the answering device is a first power; When the number of resource groups included in the resource group set is greater than the first threshold, the signal power transmitted by the answering device is a second power; The first threshold is indicated by a read / write device or predefined by a protocol, and the first power is less than the second power.

3. The method according to claim 1, wherein: The response device determines, according to the number of resource groups included in the resource group set, a data rate transmitted by the response device, including: When the number of resource groups included in the resource group set is less than or equal to a second threshold, the data rate transmitted by the answering device is a first rate; When the number of resource groups included in the resource group set is greater than a second threshold, the data rate transmitted by the answering device is a second rate; The second threshold is indicated by a read / write device or predefined by a protocol, and the first rate is less than the second rate.

4. The method according to claim 1, wherein: The response device determines the number of information bits transmitted by the response device according to the number of resource groups included in the resource group set, including: When the number of resource groups included in the resource group set is less than or equal to a third threshold, the number of information bits transmitted by the answering device is a first number of bits; When the number of resource groups included in the resource group set is greater than a third threshold, the number of information bits transmitted by the answering device is a second number of bits; The third threshold is indicated by the read / write device or predefined by the protocol, and the first bit number is smaller than the second bit number. bit number, or the first bit number is greater than the second bit number.

5. The method according to claim 1, wherein: The response device determines the type of information transmitted by the response device according to the number of resource groups included in the resource group set, including: When the number of resource groups included in the resource group set is less than or equal to a fourth threshold, the type of information transmitted by the answering device is a first type; When the number of resource groups included in the resource group set is greater than a fourth threshold, the type of information transmitted by the answering device is the second type; The fourth threshold is indicated by the reading and writing device or predefined by the protocol, the first type of information includes at least one of a random number and a random sequence, and the second type of information includes at least one of an identification of the answering device and data information.

6. The method according to claim 1, wherein: The response device determines, according to the number of resource groups included in the resource group set, a data rate transmitted by the response device, including: The answering device determines, according to the number of resource groups included in the resource group set, parameters related to the data rate transmitted by the answering device; The answering device determines, according to the relevant parameters, a data rate transmitted by the answering device; The relevant parameters include at least one of the following: The encoding method of the signal to be sent by the answering device; The transmission data rate corresponding to the operating frequency of the signal to be sent by the answering device; The modulation mode of the signal to be sent by the answering device; The modulation and coding scheme MCS level corresponding to the signal to be sent by the answering device; The coding rate corresponding to the signal to be sent by the answering device; The number of repetitions of the signal to be sent by the answering device.

7. The method according to claim 6, wherein: The encoding method of the signal to be sent by the answering device includes at least one of the following: Miller2 encoding; Miller4 encoding; Miller8 encoding; Manchester encoding; FM0 encoding; polar encoding.

8. The method according to claim 1, wherein: The division of the resource group set satisfies: The frequency domain resources are divided into a plurality of resource groups, and the plurality of resource groups constitute a resource group set.

9. The method according to claim 1, wherein: The response device detects a resource group set carrying downlink control signaling, including: The answering device detects the leading sequence of the downlink control signaling and determines the resource according to the leading sequence The number of resource groups contained in the group collection; or, The answering device blindly detects the resource group set and determines the number of resource groups included in the resource group set.

10. The method according to claim 9, wherein: The answering device blindly checks the resource group set, including: The response device detects the downlink control command on a resource group set consisting of different numbers of resource groups.

11. A method for determining a transmission parameter, comprising: The read / write device maps the downlink control signaling to a resource group in the resource group set; The reading and writing device sends the downlink control signaling to the answering device; The number of resource groups included in the resource group set indicates a reverse transmission parameter of the response device, the corresponding relationship between the number of resource groups included in the resource group set and the reverse transmission parameter is indicated by the read / write device or predefined by the protocol, and the reverse transmission parameter includes at least one of the following: The signal power transmitted by the transponder; the data rate transmitted by the transponder; the number of information bits transmitted by the answering device; The type of information transmitted by the answering device.

12. The method according to claim 11, wherein: The number of resource groups included in the resource group set indicates the signal power transmitted by the answering device, including: In a case where the number of resource groups included in the resource group set is less than or equal to a first threshold, instructing the signal power transmitted by the answering device to be a first power; In a case where the number of resource groups included in the resource group set is greater than a first threshold, instructing the signal power transmitted by the answering device to be a second power; The first threshold is indicated by a read / write device or predefined by a protocol, and the first power is less than the second power.

13. The method according to claim 11, wherein: The number of resource groups included in the resource group set indicates a data rate transmitted by the answering device, including: In a case where the number of resource groups included in the resource group set is less than or equal to a second threshold, instructing the answering device to transmit data at a first rate; In a case where the number of resource groups included in the resource group set is greater than a second threshold, instructing the answering device to transmit data at a second rate; The second threshold is indicated by a read / write device or predefined by a protocol, and the first rate is less than the second rate.

14. The method according to claim 11, wherein: The number of resource groups included in the resource group set indicates the number of information bits transmitted by the answering device, including: In a case where the number of resource groups included in the resource group set is less than or equal to a third threshold, indicating that the number of information bits transmitted by the answering device is a first number of bits; In a case where the number of resource groups included in the resource group set is greater than a third threshold, indicating that the number of information bits transmitted by the answering device is a second number of bits; The third threshold is indicated by the read / write device or predefined by the protocol, the first number of bits is smaller than the second number of bits, or the first number of bits is larger than the second number of bits.

15. The method according to claim 11, wherein: The number of resource groups included in the resource group set indicates the type of information transmitted by the response device, including: In a case where the number of resource groups included in the resource group set is less than or equal to a fourth threshold, indicating that the type of information transmitted by the answering device is a first type; In a case where the number of resource groups included in the resource group set is greater than a fourth threshold, indicating that the type of information transmitted by the answering device is a second type; The fourth threshold is indicated by the reading and writing device or predefined by the protocol, the first type of information includes at least one of a random number and a random sequence, and the second type of information includes at least one of an identification of the answering device and data information.

16. The method according to claim 11, wherein: The number of resource groups included in the resource group set indicates a data rate transmitted by the answering device, including: The number of resource groups included in the resource group set indicates parameters related to the data rate transmitted by the answering device; The relevant parameters include at least one of the following: The encoding method of the signal to be sent by the answering device; The transmission data rate corresponding to the operating frequency of the signal to be sent by the answering device; The modulation mode of the signal to be sent by the answering device; The MCS level corresponding to the signal to be sent by the answering device; The coding rate corresponding to the signal to be sent by the answering device; The number of repetitions of the signal to be sent by the answering device.

17. The method according to claim 16, wherein: The encoding method of the signal to be sent by the answering device includes at least one of the following: Miller2 encoding; Miller4 encoding; Miller8 encoding; Manchester encoding; FM0 encoding; polar encoding.

18. The method according to claim 11, wherein: The division of the resource group set satisfies: The frequency domain resources are divided into a plurality of resource groups, and the plurality of resource groups constitute a resource group set.

19. The method according to claim 11, wherein: The method further comprises: The read / write device sets a leading sequence of the downlink control signaling; The leading sequence indicates the number of resource groups included in the resource group set.

20. A transmission parameter determination device, comprising: A detection module, used for the response device to detect a resource group set carrying downlink control signaling; A determination module, configured for the response device to determine a reverse transmission parameter according to the number of resource groups included in the resource group set; The corresponding relationship between the number of resource groups included in the resource group set and the reverse transmission parameter is indicated by a read / write device or predefined by a protocol, and the reverse transmission parameter includes at least one of the following: The signal power transmitted by the transponder; the data rate transmitted by the transponder; the number of information bits transmitted by the answering device; The type of information transmitted by the answering device.

21. A transmission parameter determination device, comprising: A mapping module, used for the reading and writing device to map the downlink control signaling to the resource group in the resource group set; A sending module, used for the reading and writing device to send the downlink control signaling to the answering device; The number of resource groups included in the resource group set indicates a reverse transmission parameter of the response device, the corresponding relationship between the number of resource groups included in the resource group set and the reverse transmission parameter is indicated by the read / write device or predefined by the protocol, and the reverse transmission parameter includes at least one of the following: The signal power transmitted by the transponder; the data rate transmitted by the transponder; the number of information bits transmitted by the answering device; The type of information transmitted by the answering device.

22. A communication device, comprising a processor and a memory, wherein the memory stores a program or instruction that can be run on the processor, and when the program or instruction is executed by the processor, the steps of the transmission parameter determination method as described in any one of claims 1 to 10 are implemented, or the steps of the transmission parameter determination method as described in any one of claims 11 to 19 are implemented.

23. A readable storage medium storing a program or instruction, wherein the program or instruction, when executed by a processor, implements the steps of the transmission parameter determination method according to any one of claims 1 to 10, or the steps of the transmission parameter determination method according to any one of claims 11 to 19.

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