CN119011699A

CN119011699A - Transmission control method, transmission control device, communication equipment and storage medium

Info

Publication number: CN119011699A
Application number: CN202310558210.1A
Authority: CN
Inventors: 简荣灵; 吴凯
Original assignee: Vivo Mobile Communication Co Ltd
Current assignee: Vivo Mobile Communication Co Ltd
Priority date: 2023-05-16
Filing date: 2023-05-16
Publication date: 2024-11-22
Also published as: WO2024235108A1

Abstract

The present application discloses a transmission control method, apparatus, communication equipment and storage medium, belonging to the field of communication technology. A transmission control method of an embodiment of the present application includes: a read/write device instructs a response device to switch transmission parameters according to a first switching condition or capability information of the response device; another transmission control method of an embodiment of the present application includes: the response device switches transmission parameters according to at least one of the following: a second switching condition and capability information of the response device, a switching instruction of the read/write device; the response device sends a first signal based on the switched transmission parameter.

Description

Transmission control method, transmission control device, communication equipment and storage medium

Technical Field

The application belongs to the technical field of communication, and particularly relates to a transmission control method, a transmission control device, communication equipment and a storage medium.

Background

In an environment internet of things (Ambient Internet of Things, AIoT) system, a response device, such as a tag device (tag), may receive a control signaling or a carrier signal of a read-write device, such as a reader, and modulate data to be transmitted onto the carrier signal according to an instruction and send the data.

The read-write equipment is communicated with a plurality of response equipment, and the response equipment possibly has the problem of signal transmission failure caused by resource conflict, further causes the subsequent data transmission opportunity to preempt failure, and reduces the signal transmission reliability.

Therefore, how to effectively control the signal transmission and improve the signal transmission reliability is a technical problem which needs to be solved by those skilled in the art.

Disclosure of Invention

The embodiment of the application provides a transmission control method, a transmission control device, communication equipment and a storage medium, which are used for effectively controlling signal transmission and improving signal transmission reliability.

In a first aspect, a transmission control method is provided, the method including:

And the read-write equipment instructs the response equipment to switch the transmission parameters according to the first switching condition or the capability information of the response equipment.

In a second aspect, there is provided a transmission control method, the method comprising:

The answering machine switches the transmission parameters according to at least one of the following:

a second switching condition and capability information of the response device;

A switching instruction of the read-write equipment;

the answering device transmits a first signal based on the switched transmission parameters.

In a third aspect, there is provided a transmission control apparatus including:

and the indication module is used for indicating the response equipment to switch the transmission parameters according to the first switching condition or the capability information of the response equipment.

In a fourth aspect, there is provided a transmission control apparatus including:

a switching module, configured to switch the transmission parameters according to at least one of:

Second switching conditions and capability information of the response device;

A switching instruction of the read-write equipment;

and the transmitting module is used for transmitting the first signal based on the switched transmission parameters.

In a fifth aspect, there is provided a communication device comprising a processor and a memory storing a program or instructions executable on the processor, which when executed by the processor, performs the steps of the method as described in the first aspect, or performs the steps of the method as described in the second aspect.

In a sixth aspect, a communication device is provided, comprising a processor for running a program or instructions, implementing the steps of the method according to the first aspect, or implementing the steps of the method according to the second aspect, and a communication interface for coupling with the processor.

In a seventh aspect, there is provided a readable storage medium having stored thereon a program or instructions which when executed by a processor, performs the steps of the method according to the first aspect or performs the steps of the method according to the second aspect.

In an eighth aspect, there is provided a wireless communication system comprising: a read-write device operable to perform the steps of the method as described in the first aspect and a reply device operable to perform the steps of the method as described in the second aspect.

In a ninth aspect, there is provided a chip comprising a processor and a communication interface, the communication interface and the processor being coupled, the processor being for running a program or instructions, implementing the steps of the method as described in the first aspect, or implementing the steps of the method as described in the second aspect.

In a tenth aspect, there is provided a computer program/program product stored in a storage medium, the program/program product being executed by at least one processor to carry out the steps of the method according to the first aspect or to carry out the steps of the method according to the second aspect.

In the embodiment of the application, the read-write equipment indicates the response equipment to switch the transmission parameters according to the first switching condition or the capability information of the response equipment, so that the response equipment can perform signal transmission based on the switched transmission parameters after switching the transmission parameters, thereby realizing effective control on the signal transmission and improving the reliability of the signal transmission.

Drawings

Fig. 1 is a block diagram of a wireless communication system to which embodiments of the present application are applicable;

FIG. 2 is a schematic diagram of a backscatter communication process in accordance with the related art;

FIG. 3 is a schematic diagram of a backscatter communication system according to the related art;

FIG. 4 is a diagram of a related art modulation principle of backscatter communication;

FIG. 5 is a schematic diagram of a first network architecture for communication of the Internet of things environment in the related art;

FIG. 6 is a schematic diagram of a second network architecture for ambient Internet of things communication in the related art;

FIG. 7 is a schematic diagram of a third network architecture for ambient Internet of things communication in the related art;

FIG. 8 is a schematic diagram of a fourth network architecture for ambient Internet of things communication in the related art;

FIG. 9 is a schematic diagram of information transmission by a read-write device and a response device in the related art;

FIG. 10 is a schematic diagram of a related art inventory process;

Fig. 11 is a flowchart of a transmission control method according to an embodiment of the present application;

fig. 12 is a flowchart of another transmission control method according to an embodiment of the present application;

Fig. 13 is a schematic diagram of a transmission flow according to an example of the embodiment of the present application;

Fig. 14 is a schematic diagram of a transmission flow corresponding to an example two in the embodiment of the present application;

Fig. 15 is a schematic diagram of a transmission flow corresponding to an example three in the embodiment of the present application;

fig. 16 is a schematic diagram of a transmission flow corresponding to example 4-1 in an embodiment of the present application;

fig. 17 is a schematic diagram of a transmission flow corresponding to example 4-2 in an embodiment of the present application;

Fig. 18 is a schematic structural diagram of the transmission control device corresponding to fig. 11;

Fig. 19 is a schematic structural diagram of the transmission control device corresponding to fig. 12;

fig. 20 is a schematic structural diagram of a communication device according to an embodiment of the present application.

Detailed Description

The technical solutions of the embodiments of the present application will be clearly described below with reference to the drawings in the embodiments of the present application, and it is apparent that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which are derived by a person skilled in the art based on the embodiments of the application, fall within the scope of protection of the application.

The terms "first," "second," and the like, herein, are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the terms so used are interchangeable under appropriate circumstances such that the embodiments of the application are capable of operation in sequences other than those illustrated or otherwise described herein, and that the "first" and "second" distinguishing between objects generally are not limited in number to the extent that the first object may, for example, be one or more. Furthermore, the "or" in the present application means at least one of the connected objects. For example, "a or B" encompasses three schemes, scheme one: including a and excluding B; scheme II: including B and excluding a; scheme III: both a and B. The character "/" generally indicates that the context-dependent object is an "or" relationship.

The term "indication" according to the application may be either a direct indication (or an explicit indication) or an indirect indication (or an implicit indication). The direct indication may be understood that the sender explicitly informs the specific information of the receiver, the operation to be executed, the request result, and other contents in the sent indication; the indirect indication may be understood as that the receiving side determines corresponding information according to the indication sent by the sending side, or determines and determines an operation or a request result to be executed according to a determination result.

It should be noted that the techniques described in the embodiments of the present application are not limited to long term evolution (Long Term Evolution, LTE)/LTE evolution (LTE-Advanced, LTE-a) systems, but may also be used in other wireless communication systems, such as code division multiple access (Code Division Multiple Access, CDMA), time division multiple access (Time Division Multiple Access, TDMA), frequency division multiple access (Frequency Division Multiple Access, FDMA), orthogonal frequency division multiple access (Orthogonal Frequency Division Multiple Access, OFDMA), single-carrier frequency division multiple access (Single-carrier Frequency-Division Multiple Access, SC-FDMA), or other systems. The terms "system" and "network" in embodiments of the application are often used interchangeably, and the techniques described may be used for both the above-mentioned systems and radio technologies, as well as other systems and radio technologies. The following description describes a New Radio (NR) system for exemplary purposes and NR terminology is used in much of the following description, but the techniques may also be applied to systems other than NR systems, such as the 6 th Generation (6G) communication system.

Fig. 1 shows a block diagram of a wireless communication system to which an embodiment of the present application is applicable. The wireless communication system includes a terminal 11 and a network device 12. The terminal 11 may be a Mobile phone, a tablet Computer (Tablet Personal Computer), a Laptop (Laptop Computer), a notebook, a Personal digital assistant (Personal DIGITAL ASSISTANT, PDA), a palm Computer, a netbook, an Ultra-Mobile Personal Computer (Ultra-Mobile Personal Computer, UMPC), a Mobile internet appliance (Mobile INTERNET DEVICE, MID), an augmented Reality (Augmented Reality, AR), a Virtual Reality (VR) device, a robot, a wearable device (Wearable Device), an aircraft (FLIGHT VEHICLE), a vehicle-mounted device (Vehicle User Equipment, VUE), a ship-mounted device, a pedestrian terminal (PEDESTRIAN USER EQUIPMENT, PUE), a smart home (home device with a wireless communication function, such as a refrigerator, a television, a washing machine, or furniture), a game machine, a Personal Computer (Personal Computer, PC), a teller machine, or a self-service machine, and other terminal-side devices. The wearable device includes: intelligent wrist-watch, intelligent bracelet, intelligent earphone, intelligent glasses, intelligent ornament (intelligent bracelet, intelligent ring, intelligent necklace, intelligent anklet, intelligent foot chain etc.), intelligent wrist strap, intelligent clothing etc.. The in-vehicle apparatus may also be referred to as an in-vehicle terminal, an in-vehicle controller, an in-vehicle module, an in-vehicle component, an in-vehicle chip, an in-vehicle unit, or the like. It should be noted that the specific type of the terminal 11 is not limited in the embodiment of the present application.

The network side device 12 may comprise an access network device or a core network device. The access network device may also be referred to as a radio access network (Radio Access Network, RAN) device, a radio access network function, or a radio access network element, among others. The Access network device may include a base station, a wireless local area network (Wireless Local Area Network, WLAN) Access Point (AS), or a wireless fidelity (WIRELESS FIDELITY, WIFI) node, etc. The base station may be referred to as a Node B (NB, NB), an Evolved Node B (eNB), a next generation Node B (the next generation Node B, gNB), a New air Node B (New Radio Node B, NR Node B), an access point, a relay station (Relay Base Station, RBS), a serving base station (Serving Base Station, SBS), a base transceiver station (Base Transceiver Station, BTS), a Radio base station, a Radio transceiver, a Basic service set (Basic SERVICE SET, BSS), an Extended service set (Extended SERVICE SET, ESS), a Home Node B (HNB), a home Evolved Node B (home Evolved Node B), a transmission and reception point (Transmission Reception Point, TRP), or some other suitable term in the field, so long as the same technical effect is achieved, the base station is not limited to a specific technical vocabulary, and in the embodiment of the present application, the base station in the NR system is described only as an example, and the specific type of the base station is not limited.

The core network device may comprise a core network device may comprise, but is not limited to, at least one of: a core network node, a core network function, a Mobility management entity (Mobility MANAGEMENT ENTITY, MME), an access Mobility management function (ACCESS AND Mobility Management Function, AMF), a session management function (Session Management Function, SMF), a user plane function (User Plane Function, UPF), policy control Function (Policy Control Function, PCF), policy and Charging Rules Function (PCRF) Policy AND CHARGING Rules Function, edge application service discovery Function (Edge Application Server Discovery Function, EASDF), unified data management (Unified DATA MANAGEMENT, UDM), unified data repository (Unified Data Repository, UDR), home subscriber server (Home Subscriber Server, HSS), centralized network configuration (Centralized network configuration, CNC), network storage function (Network Repository Function, NRF), network open function (Network Exposure Function, NEF), local NEF (or L-NEF), binding support function (Binding Support Function, BSF), application functions (Application Function, AF), etc. It should be noted that, in the embodiment of the present application, only the core network device in the NR system is described as an example, and the specific type of the core network device is not limited. But are not limited to, at least one of: a core network node, a core network function, a Mobility management entity (Mobility MANAGEMENT ENTITY, MME), an access Mobility management function (ACCESS AND Mobility Management Function, AMF), a session management function (Session Management Function, SMF), a user plane function (User Plane Function, UPF), a policy control function (Policy Control Function, PCF), policy AND CHARGING Rules Function (PCRF), edge application service discovery Function (Edge Application Server Discovery Function, EASDF), unified data management (Unified DATA MANAGEMENT, UDM), unified data repository (Unified Data Repository, UDR), home subscriber server (Home Subscriber Server, HSS), centralized network configuration (Centralized network configuration, CNC), network storage functions (Network Repository Function, NRF), network open functions (Network Exposure Function, NEF), local NEF (or L-NEF), binding support functions (Binding Support Function, BSF), application functions (Application Function, AF), and the like. It should be noted that, in the embodiment of the present application, only the core network device in the NR system is described as an example, and the specific type of the core network device is not limited.

For easy understanding, application scenarios, related technologies and concepts related to the embodiments of the present application will be described first.

1. Regarding application scenarios

The technical scheme provided by the embodiment of the application can be applied to the environment of the Internet of things scene. The method can be applied to the scenes such as object counting, logistics counting, fire disaster early warning and the like. And the method can be applied to a special reader for a radio frequency identification technology (radio frequency identification, RFID), a WiFi transmission scene, a gNB transmission scene, a next generation mobile communication scene and the like.

2. Internet of things system for environment

As mentioned above, in the environment internet of things system, a response device, such as a tag device (tag), may receive a control signaling or a carrier signal of a read-write device, such as a reader, and modulate data to be transmitted onto the carrier signal according to an instruction to send the data.

The types of answering devices include the following:

One is a Passive answering device, such as a tag device belonging to a Passive internet of things (Internet of Things, ioT) device (Passive-IoT), which has no energy storage capacitor or battery, and is powered by means of Radio Frequency (RF) signals, and the received RF signals are power signals of a rectifier, have no carrier generating capability, and have the lowest power consumption;

The other is a semi-passive (semi-passive) transponder device of the type having an energy storage capacitor/battery that stores energy by means of a non-radio frequency signal. Optionally, with a Power Amplifier (PA)/low noise Amplifier (Low Noise Amplifier, LNA) or other active device, without carrier generation capability, power consumption secondary;

The other is an active transponder device, such as an active tag device (ACTIVE TAG), which has an energy storage capacitor/battery, is powered by non-radio frequency signals, has carrier generation capability, and consumes the most power.

A more typical passive internet of things device is a backscatter communication device that can use radio frequency signals in other devices or environments to perform signal modulation to transmit its own information.

As shown in fig. 2, a schematic diagram of a backscatter communication process is shown, where the process includes two links, one is a link from a reader to a responder, and the reader may send control signaling (command)/carrier signal to the responder, where the carrier signal may be continuous wave (continuous wave), and the other is a link from the responder to the reader, where the responder may send a backscatter signal to the reader.

The basic constituent modules and main functions of the backscatter communication device are as follows:

an antenna unit: for receiving radio frequency signals, control signaling, and for transmitting modulated backscatter signals;

An energy harvesting module or an energy supply module: the module is used for radio frequency energy harvesting by transponder devices, such as backscatter communication devices, or other energy harvesting, including but not limited to solar energy, kinetic energy, mechanical energy, thermal energy, etc. In addition to the energy harvesting module, a battery powered module may be included, where the backscatter communications device is a semi-passive transponder device. The energy collection module or the energy supply module supplies power to all other modules in the equipment;

And (3) a microcontroller: the method comprises the steps of controlling baseband signal processing, energy storage or data scheduling states, switching, system synchronization and the like;

a signal receiving module: control command or data and the like sent by a receiving end of the back scattering communication or other network nodes are demodulated;

Channel coding and modulation module: channel coding and signal modulation are carried out under the control of a controller, and different load impedances are selected by a selection switch under the control of the controller to realize modulation;

memory or sensing module: for storing ID information, location information, or sensing data of the device, etc.

In addition to the above basic constituent modules, it is also possible for the backscatter communication device to integrate a tunnel diode amplifier module, a low noise amplifier module, or the like for improving the reception sensitivity and transmission power of the transmitting end.

Fig. 3 is a schematic structural diagram of a backscatter communication system, where a transmitting end of a read-write device transmits a carrier signal through a Power Amplifier (PA), a response device modulates a signal through a radio frequency collector (RF HARVESTER), a demodulator (Demod), a Logic (Logic) circuit, a Clock (Clock) circuit, etc., outputs a backscatter signal, and a receiving end of the read-write device receives the backscatter signal through a Low Noise Amplifier (LNA) to perform corresponding demodulation processing. Wherein, TX BB represents a baseband processing module at the transmitting end of the read-write equipment, and RX BB represents a baseband processing module at the receiving end of the read-write equipment.

A simple implementation is that the answering device reflects the incoming carrier signal when a "1" needs to be sent and does not reflect when a "0" needs to be sent.

Fig. 4 is a schematic diagram showing the principle of backscatter communication modulation, where the response device can control the reflection coefficient Γ of the circuit by adjusting its internal impedance, so as to change the amplitude, frequency, phase, etc. of the incident signal, and implement modulation of the signal. Wherein the reflection coefficient of the signal can be characterized as:

Wherein Z ₀ is the antenna characteristic impedance and Z ₁ is the load impedance. Assuming that the input RF signal is S _in (t), the output modulated backscatter signal is The controller reasonably controls the reflection coefficient (gamma _T＝Γ₀、Γ_T＝Γ₁、Γ_T＝Γ₂、……、Γ_T＝Γ_n), and corresponding amplitude modulation, frequency modulation or phase modulation can be realized by utilizing the channel coding and modulation module. The control of the reflection coefficient by the controller may be performed according to the following relationship:

Symbol (symbol) 0 corresponds to impedance (impedance) 0;

symbol 1 corresponds to impedance 1;

Symbol 2 corresponds to impedance 2;

……

the symbol n corresponds to the impedance n.

3. Network architecture for environmental internet of things communication

The network architecture of the environment internet of things communication is shown in fig. 5 to 8. Fig. 5 shows: the network side equipment, such as a base station, is used as a read-write equipment, and sends carrier signals or control signaling to the response equipment, such as the tag equipment, and receives the back scattering signals of the response equipment. Fig. 6 shows: the network side equipment, such as a base station, communicates with the terminal, and the terminal serves as a read-write device, sends carrier signals or control signaling to the response equipment, such as the tag equipment, and receives the back scattering signals of the response equipment. Fig. 7 shows: the network side equipment, such as a base station, sends a carrier signal or a control signaling to the response equipment, such as the tag equipment, and the terminal receives the back scattering signal sent by the response equipment, and then reports the relevant data obtained by demodulation to the network side equipment. Fig. 8 shows: the network side equipment, such as a base station, communicates with the terminal, the network side equipment sends indication information to the terminal, the terminal sends carrier signals and/or control signaling to the response equipment, such as the tag equipment, and the network side equipment receives the back scattering signals sent by the response equipment. Fig. 5 and 6 show one representation of a single-base architecture, and fig. 7 and 8 show one representation of a double-base architecture.

Wherein the type of control signaling may include at least one of: select), inventory (inventory), access (access).

4. Regarding conventional radio frequency identification (Radio Frequency Identification, RFID) transmission flow

As shown in fig. 9, taking the ISO 18000-6C Protocol as an example, in the ultra high frequency (Ultra High Frequency, UHF) RFID Protocol, in the inventory mode, the read-write device selects (select) the response device, after sending the Query command (Query), the response device responds (Relay), that is, generates a 16-bit random number to the read-write device, then the read-write device sends the random number sequence to the response device through the acknowledgement response command (ACK), the response device sends related data to the read-write device, such as Protocol Control word (Protocol Control, PC)/extended Protocol Control word (Extended Protocol Control, XPC), electronic product code (Electronic Product Code, EPC), packet cyclic redundancy check (Cyclic Redundancy Check, CRC) (PACKETCRC), etc., if EPC is valid, the read-write device can send the repeat Query command (Query rep) or other commands, and if EPC is invalid, the read-write device can send Negative Acknowledgement (NAK). And sending a query instruction from the read-write equipment to the read-write equipment, wherein the received related data sent by the response equipment is a single response process of the response equipment.

5. Multiple access protocol for RFID

For a scenario where there are multiple tag devices, the reader/writer needs to inventory the multiple tag devices in a TDMA manner that combines contention access. Taking the ISO 18000-6C protocol as an example, one possible procedure is as follows:

1. The reader-writer sends a Select command to Select the label equipment to be checked;

2. The reader sends a Query command to start a round of inventory, and the Query indicates a Q value;

3. The label device initializes a counter, namely, generates a random integer in the range of [0,2 ^Q -1] as an initial value of the counter;

4. The tag device checks whether the counter is 0;

5a, [ if the counter of the tag device is 0]: the tag device with counter 0 sends a Reply (Reply) containing a randomly generated 16-bit random number, denoted as RN16;

6a, [ if the reader/writer decodes RN16 successfully ]: the reader-writer sends an ACK command which comprises the RN16 and a command field of 2 bits;

7. The tag device receives the ACK and checks whether the RN16 contained in the ACK is the RN16 transmitted before;

8a, [ if RN16 is correct ]: the correct tag equipment for checking the RN16 sends data to be reported to the reader-writer, such as PC, XPC, EPC or other data, and the checking of the tag equipment is completed;

8b, [ if RN16 is wrong ]: the tag device that verifies the RN16 error sets its own counter to a maximum value;

6b, [ if the reader/writer fails to decode RN16 ]: the reader sends a NAK command;

9. If the label device receiving the NAK command sends Reply at the last adjacent time sequence, setting the counter to be the maximum value;

5b, [ if the counter of the label-free device is 0]: the reader sends a QueryRep command;

10. The tag device which receives the QueryRep command counts itself to a counter-1;

11. [ optional ]: the reader/writer may send a adjust query (query) command to reconfigure a Q value;

12. The label device which receives the QueryAdjust command and does not finish counting reinitializes the counter, and randomly selects an integer within the range of [0,2 ^Q -1] as the initial value of the counter;

13. repeating the steps 4-12 until all the label devices complete the checking.

In this multiple access manner, the tag device needs to repeatedly transmit the RN16 until the RN16 is correctly and uniquely identified by the reader, and the subsequent reader then transmits data on the exclusive channel indicated by the RN16 by the tag device.

The application scenario, related technologies and concepts related to the embodiment of the present application are described above. The transmission control method provided by the embodiment of the application is described in detail below through some embodiments and application scenarios thereof with reference to the accompanying drawings.

It should be noted that, in the embodiment of the present application, the read-write device may be a device that reads or writes information related to the response device in a handheld manner or a fixed manner, or a device that communicates with the response device. Alternatively, the read-write device may be a network-side device, such as a base station. Types of base stations include, but are not limited to, integrated access Backhaul node (IAB station), repeater (repeater), pole station (pole station), where the repeater may be a network controlled repeater (network controlled repeater). The read-write device may also be a terminal, other network access device, or a device with read-write function, such as a reader-writer.

The transponder device may be an RFID tag device, including passive transponder devices, semi-passive transponder devices, or active transponder devices, among many types. The transponder may be signaled by a backscattered RF signal, and some active transponder devices have active signal generation capabilities. The energy of the transponder device originates from the environment, e.g. radio frequency energy, thermal energy, wind energy, kinetic energy, etc., and may be referred to as AIoT device or also as terminal device.

Referring to fig. 11, a flowchart of an implementation of a transmission control method according to an embodiment of the present application may include the following steps:

S1110: and the read-write equipment instructs the response equipment to switch the transmission parameters according to the first switching condition or the capability information of the response equipment.

By applying the method provided by the embodiment of the application, the read-write equipment instructs the response equipment to switch the transmission parameters according to the first switching condition or the capability information of the response equipment, so that the response equipment can perform signal transmission based on the switched transmission parameters after switching the transmission parameters, thereby realizing effective control on the signal transmission and improving the reliability of the signal transmission.

In some embodiments, a first switching condition may be preset, where the first switching condition is used by the read-write device to determine whether to switch the transmission parameter and instruct the answering device to switch. The read-write device may detect the first switching condition during the transmission.

Alternatively, the read-write device may obtain the capability information of the answering device in advance. Optionally, the answering device may send capability information to the read-write device, and the read-write device may receive the capability information sent by the answering device before instructing the answering device to switch the transmission parameters; optionally, the capability information of the answering device may be configured in the configuration information of the reading and writing device, and the reading and writing device may obtain the capability information of the answering device through the configuration information. The configuration information of the read-write equipment can be factory configuration, and can also be configured by the network side equipment through high-layer signaling.

Alternatively, the read-write device may instruct the response device to switch the transmission parameter if the first switching condition is satisfied.

Optionally, the read-write device may instruct the response device to switch the transmission parameters according to the capability information of the response device;

Alternatively, the read-write device may instruct the response device to switch the transmission parameter according to the capability information of the response device when the first switching condition is satisfied.

Optionally, the read-write device may determine the transmission parameter to be switched to, and then instruct the response device to switch the transmission parameter. Optionally, the read-write device may indicate the determined transmission parameter to be switched to the response device, so that the response device switches the transmission parameter based on the transmission parameter to be switched to.

Alternatively, the read-write device may determine the transmission parameters to be switched to based on predefined, or responsive, capability information of the device.

In some embodiments of the application, the first switching condition may include at least one of:

Detecting that the response equipment and other response equipment have resource conflict;

detecting that the signal transmission of the response equipment fails;

detecting that the reference signal measurement quantity of the answering device is less than or equal to a first threshold value;

Detecting auxiliary information sent by the response equipment;

and detecting that the inventory efficiency of the first inventory flow of the inventory stage is smaller than or equal to a second threshold value.

In the embodiment of the application, the read-write device can instruct the response device to switch the transmission parameters according to the first switching condition or according to the first switching condition and the capability information of the response device.

The first switching condition may include at least one of:

1) It is detected that the answering machine has a resource conflict with other answering machines. If two or more temporary identifications are detected on the same time-frequency resource, one of the temporary identifications is the temporary identification of the answering equipment; if the response device has resource conflict with other response devices, signal transmission failure is easy to cause. When the read-write equipment detects that the response equipment and other response equipment have resource conflict, the read-write equipment can consider that the first switching condition is met currently, and instruct the response equipment to switch transmission parameters, so that the conflict between the response equipment can be reduced or avoided, and the signal transmission reliability is improved;

2) Failure of the signal transmission of the answering machine is detected. If the signal transmission of the answering device fails, there may be a problem of resource conflict between the answering device and other answering devices. When the read-write device detects that the signal transmission of the response device fails, the read-write device can consider that the first switching condition is currently met. Optionally, detecting the signal transmission failure of the answering device may include not detecting the signal of the answering device within a preset transmission duration, which may be predefined or configured by the network-side device through higher layer signaling. Alternatively, detecting a failure to signal the answering machine may include detecting no signal from the answering machine in the N roulette point flow. N is predefined or configured by the network side device through higher layer signaling;

3) The reference signal measurement amount of the answering machine is detected to be less than or equal to the first threshold value. A change in the channel quality measurement, or a dynamic change in the channel, or a smaller transmit power, etc., may result in a smaller reference signal measurement for the answering machine. If the measured reference signal of the answering device is less than or equal to the first threshold value, the read-write device may not be able to accurately detect the signal transmitted by the answering device. The read-write device may consider that the first switching condition is currently satisfied when it detects that the reference signal measurement quantity of the response device is less than or equal to the first threshold value. The reference signal measurement may include a reference signal received power or a reference signal received quality. The first thresholds corresponding to different reference signal measurements may be the same or different. The first threshold is predefined or indicated by the network side device, as configured by the network side device through higher layer signaling. Optionally, the first threshold is greater than or equal to a minimum receive sensitivity of the read-write device;

4) Auxiliary information sent by the answering device is detected. Optionally, the auxiliary information may include at least one of power shortage information, power saving information, and perceived business process information. The energy of the energy storage capacitor of the response device is insufficient to maintain the subsequent communication according to the electric quantity insufficient information, so that the communication is easily forced to be interrupted; the response device can be known to enter the electric quantity saving state through the electric quantity saving information; the service processing information can be used for knowing that the response equipment can not communicate when sensing the environment parameters. When the read-write equipment detects the auxiliary information sent by the response equipment, the read-write equipment can consider that the first switching condition is met currently;

5) And detecting that the inventory efficiency of the first inventory flow of the inventory stage is smaller than or equal to a second threshold value. One inventory phase may include multiple inventory processes, and the first inventory process may be any inventory process other than the last inventory process. For any wheel counting process, the counting efficiency of the wheel counting process can be determined based on N1/N2, N1 is the number of response devices corresponding to signals that can be detected by the read-write device in the wheel counting process, and N2 is the total number of response devices to be counted, which are selected by the read-write device. If the inventory efficiency of the first inventory process is low, the inventory efficiency may be improved by switching the transmission parameters. The read-write device may consider that the first switching condition is currently satisfied when it detects that the inventory efficiency of the first inventory flow of the inventory phase is less than or equal to the second threshold. The second threshold may be predefined or indicated by the network side device, as configured by the network side device through higher layer signaling.

According to the at least one first switching condition, the read-write equipment can timely instruct the response equipment to switch transmission parameters, and signal transmission reliability is improved.

In some embodiments of the application, the capability information may include at least one of:

Information whether or not there is energy storage capability;

in the case of energy storage capability, size information of the energy storage capability;

information whether or not there is a signal amplifying capability;

In the case of having signal amplifying capability, the magnitude information of the signal amplifying capability, such as signal transmission power, may be an actively generated signal or a backscattered signal;

Information whether or not there is frequency modulation capability;

With frequency modulation capability, magnitude information of the frequency modulation capability, optionally, an offset magnitude of the frequency of the transmit signal relative to the carrier signal frequency, corresponds to a different frequency modulation capability, e.g., reverse link frequency (Backscatter Link Frequency, BLF);

Information on whether or not there is a perceptibility.

The read-write device instructs the answering device to switch transmission parameters, which may be related to the capabilities of the answering device. For example, the response device has frequency modulation capability, and the read-write device can instruct the response device to switch to other frequency domain resources for signal transmission according to the frequency modulation capability of the response device. For another example, the answering device has signal amplifying capability, and the read-write device can instruct the answering device to switch to other transmitting power levels for signal transmission according to the signal amplifying capability of the answering device. The read-write equipment can more accurately perform transmission parameter switching indication according to the capability information of the response equipment, is beneficial to effectively controlling the signal transmission of the response equipment, and can improve the signal transmission reliability.

In some embodiments of the application, the transmission parameters may include at least one of:

Time domain resources of the transmission signal;

frequency domain resources of the transmission signal;

Transmission power of the transmission signal;

The format of the transmission signal;

the content of the signal is transmitted.

The time domain resource of the transmission signal refers to the time domain resource occupied by the response equipment when the response equipment transmits the signal; the frequency domain resource of the transmission signal refers to the frequency domain resource occupied by the response equipment when the response equipment transmits the signal; the transmitting power of the transmission signal refers to the transmitting power or the transmitting power class when the response device performs signal transmission; the format of the transmission signal refers to the format of the signal transmitted by the response device; the content of the transmission signal refers to the content of the signal transmitted by the answering machine, alternatively the content of the transmission signal may include at least one of identification information and data information, such as transmission of only identification information, or transmission of identification information and data information.

Optionally, the format of the transmission signal may include at least one of:

The number of bits of the transmission signal;

whether the transmission signal contains a synchronization sequence;

The synchronization sequence length of the transmission signal;

modulation mode of transmission signal;

The data rate of the transmission signal;

The coding mode of the transmission signal;

a communication link rate at which signals are transmitted;

A preamble sequence of a transmission signal;

Transmission mode of the transmission signal.

The bit number of the transmission signal refers to the bit number of the signal transmitted by the response device, and different transmission parameters can be represented by different transmission bit numbers;

whether the transmission signal contains a synchronization sequence (sync sequence) refers to whether the signal transmitted by the answering device contains a synchronization sequence;

the length of the synchronization sequence of the transmission signal refers to the length of the synchronization sequence contained in the signal transmitted by the response device;

the modulation mode of the transmission signal refers to the modulation mode of the signal transmitted by the response device, such as an Amplitude shift keying (Amplitude SHIFT KEYING, ASK) modulation mode or a Frequency shift keying (Frequency SHIFT KEYING, FSK) modulation mode;

the data rate of the transmission signal refers to the data rate (data rate) of the signal transmitted by the answering device;

The Coding mode of the transmission signal refers to the Coding mode of the signal transmitted by the response device, such as Bi-PHASE SPACE Coding (FM 0) Coding or Miller (Miller) Coding. Optionally, the coding mode of the transmission signal includes at least one of a duty cycle and a code rate. Alternatively, the duty cycle may be a different duty cycle (45% -55%) of the FM0/Miller sequence 0, 1. Alternatively, the subcarrier coefficients of Miller (m=2, 4 or 8) may determine different code rates;

The communication link rate at which signals are transmitted refers to the communication link rate at which signals are transmitted by the answering machine. Alternatively, different time units and reverse link basic clock cycle parameters may determine different reverse link communication rates;

the preamble of the transmission signal refers to the preamble of the signal transmitted by the answering device. Alternatively, the preamble sequence of the transmission signal may include one of a preamble with a plurality of preambles 0 and a preamble without a preamble 0. For example, when the indication parameter is trext=1, the FM0/Miller encoded extended preamble has 12 preamble 0 s, and when the indication parameter is trext=0, the FM0/Miller encoded extended preamble has no preamble 0 s;

The transmission mode of the transmission signal refers to a transmission mode (pattern) of a signal transmitted by the answering device.

The format of the transmission signal comprises at least one item, which is beneficial to effectively controlling the signal transmission of the corresponding equipment and can improve the reliability of the signal transmission.

Optionally, the read-write device may determine the transmission parameter to be switched to by the response device according to the capability information of the response device, and further indicate the transmission parameter to be switched to the response device. According to the capability information of the response device, the transmission parameters to be switched to of the response device can be determined more accurately, effective control of signal transmission of the response device is facilitated, and signal transmission reliability can be improved.

In some embodiments of the present application, the read-write device instructs the response device to switch the transmission parameters, and may include the following steps:

the read-write equipment sends indication information to the response equipment, wherein the indication information is used for indicating the response equipment to switch transmission parameters.

In the embodiment of the application, the read-write device can instruct the response device to switch the transmission parameters according to the first switching condition or the capability information of the response device, and the indication can be a display indication, that is, the read-write device can send indication information to the response device, where the indication information is used to instruct the response device to switch the transmission parameters. After receiving the indication information, the response device can know that the read-write device performs switching indication, and can switch the transmission parameters according to the switching indication of the read-write device.

Optionally, the indication information may include a transmission parameter to be switched, so that after receiving the indication information, the response device may obtain the transmission parameter to be switched, and further, in case of determining a switching indication in response to the read-write device, may switch to the transmission parameter to be switched, and perform signal transmission based on the switched transmission parameter.

Alternatively, the indication information may not include the transmission parameter to be switched to. After the read-write equipment sends the indication information to the response equipment, the read-write equipment actively triggers the signal receiving based on the transmission parameters to be switched. After receiving the indication information, the response device determines that the read-write device performs switching indication, determines a transmission parameter to be switched according to predefined or own capability information, and after switching to the transmission parameter to be switched, can perform signal transmission based on the switched transmission parameter.

Alternatively, the indication information may not include the transmission parameter to be switched to. The read-write device may indicate the transmission parameters to be switched to the answering device via other indication information.

the read-write device instructs the answering device to switch the transmission parameters in a predefined manner.

In the embodiment of the application, the read-write device can instruct the response device to switch the transmission parameters in a predefined manner according to the first switching condition or the capability information of the response device.

Optionally, the transmission parameters of the checking stage and the data sending stage may be inconsistent, that is, the transmission parameters on which the response device is based in the checking stage and the data sending stage may be inconsistent, and the read-write device may instruct the response device to switch the transmission parameters when entering the data sending stage from the checking stage;

Optionally, the transmission parameters of different checking flows may not be consistent, for example, the transmission parameters on which the response device is based in the first checking flow and the second checking flow are inconsistent, so that the reason for the second checking may be that the checking efficiency of the first checking flow is low, the checking efficiency needs to be improved by switching the transmission parameters, and the read-write device may instruct the response device to switch the transmission parameters when entering a new checking flow.

the read-write device implicitly indicates to the response device to switch the transmission parameters by at least one of:

A coding rate;

A downlink communication link rate;

frequency domain resources;

A time unit length;

A carrier type;

a preamble sequence type;

signal sequence type.

In the embodiment of the application, the read-write device can indicate to the response device to switch the transmission parameters according to the first switching condition or the capability information of the response device, and the indication can be an implicit indication, that is, the read-write device can implicitly indicate to the response device to switch the transmission parameters through at least one of the coding rate, the downlink communication link rate, the frequency domain resource, the time unit length, the carrier type, the preamble sequence type and the signal sequence type.

For example, the coding rate may be predefined, the answering device obtaining the coding rate by demodulating the signaling;

the time unit length may be the length of a reference time interval (Tari) in PIE encoding;

The carrier types may be different carrier waveforms, e.g., single frequency carrier, orthogonal frequency division multiplexing (Orthogonal Frequency Division Multiplexing, OFDM) signal, chirp (Chirp) signal, dual frequency carrier signal, etc.; or On-Off Keying (OOK) based carrier, FSK based carrier, etc.;

Different preamble types can be distinguished by the presence or absence of delimiters/calibrators;

Signal sequence types such as ZC (Zadoff Chu) sequences, gold sequences, etc.

The read-write equipment indicates the response equipment to switch transmission parameters in a display indication or implicit indication mode, so that effective control over signal transmission of the response equipment is facilitated, and the reliability of signal transmission can be improved.

In some embodiments of the present application, after the read-write device instructs the answering device to switch the transmission parameters, the method may further include the steps of:

The read-write equipment determines a first transmission parameter, wherein the first transmission parameter is a transmission parameter used by the response equipment;

the read-write equipment receives a first signal sent by the response equipment based on the first transmission parameter.

In the embodiment of the present application, after the read-write device instructs the response device to switch the transmission parameters according to the first switching condition or the capability information of the response device, the first transmission parameter may be determined, where the first transmission parameter is a transmission parameter used by the response device.

Optionally, the read-write device may instruct the response device to switch the transmission parameter at the same time, or after, or before, the transmission parameter to be switched to the response device, where the response device is based on its own capability information, and if it is determined to respond to the instruction, acknowledgement information may be returned to the read-write device, which indicates that the transmission parameter to be switched to is switchable to perform signal transmission, or no acknowledgement information is returned to the read-write device, and the transmission parameter to be switched to is directly switched to perform signal transmission. The read-write device may determine the transmission parameter to be switched to as a first transmission parameter, and receive the first signal sent by the response device based on the first transmission parameter. For example, the first transmission parameter includes a frequency domain resource of the transmission signal, and the read-write device may receive the first signal sent by the response device at the frequency domain resource.

Optionally, the read-write device may instruct the response device to switch the transmission parameters at the same time, or after, or before, the response device may instruct the transmission parameters to be switched to the response device, and if it is determined that the response device does not respond to the instruction, failure information may be returned to the read-write device, which indicates that the response device cannot switch to the transmission parameters to be switched to perform signal transmission, or keep silent, or perform signal transmission using the current transmission parameters, or perform switching of the transmission parameters based on the capability information of the response device, and feedback the switched transmission parameters to the read-write device. The read-write device can accordingly determine the transmission parameter used by the response device, namely the first transmission parameter, and receive the first signal sent by the response device based on the first transmission parameter.

Alternatively, the first signal may include a signal generated based on a carrier signal modulation transmitted by the reader/writer device or other reader/writer device, or a signal generated based on a carrier signal modulation generated by the responder device.

After the read-write equipment indicates to the response equipment to switch the transmission parameters, the first transmission parameters used by the response equipment are determined, and then the first signals sent by the response equipment can be accurately received based on the first transmission parameters, so that the signal transmission reliability is improved.

The read-write device sends the transmission parameters to be switched to of the response device to the other read-write devices.

In the embodiment of the application, the read-write equipment can send the transmission parameters to be switched to by the response equipment to other read-write equipment. The answering device may send the first signal to the read-write device or to other read-write devices. I.e. the other read-write device may receive the first signal sent by the answering device based on the transmission parameter to be switched to. That is, the read-write apparatus that receives the first signal and the read-write apparatus that instructs to perform transmission parameter switching may be the same read-write apparatus or different read-write apparatuses.

The read-write device sends the transmission parameters to be switched to by the response device to the other read-write devices, so that the other read-write devices can accurately receive the first signal sent by the response device based on the transmission parameters to be switched to by the response device.

Optionally, after the read-write device instructs the response device to switch the transmission parameter, the read-write device may instruct other read-write devices to receive the first signal on the corresponding resource, so that the other read-write devices can accurately receive the first signal.

Optionally, before the read-write device instructs the response device to switch the transmission parameters, the read-write device may receive the transmission parameters to be switched to by the response device sent by the other read-write device. That is, the other read-write equipment determines the transmission parameters to be switched to by the response equipment and sends the transmission parameters to the read-write equipment so as to instruct the read-write equipment to perform switching instruction of the transmission parameters to the response equipment. For example, the other read-write equipment is a base station, the read-write equipment is a terminal, the base station sends the transmission parameters to be switched to of the response equipment to the terminal based on the signaling interaction with the terminal, and the terminal indicates the response equipment to switch the transmission parameters.

Corresponding to the embodiment of the method shown in fig. 11, the embodiment of the present application further provides a transmission control method, referring to fig. 12, which is a flowchart for implementing another transmission control method according to the embodiment of the present application, where the method may include the following steps:

S1210: the answering machine switches the transmission parameters according to at least one of the following:

Second switching conditions and capability information of the response device;

A switching instruction of the read-write equipment;

s1220: the answering device transmits a first signal based on the switched transmission parameters.

By applying the method provided by the embodiment of the application, the response equipment sends the first signal based on the switched transmission parameters after switching the transmission parameters according to the second switching conditions and the capability information of the response equipment, or according to the switching indication of the read-write equipment, or according to the second switching conditions and the capability information of the response equipment and the switching indication of the read-write equipment, so that the signal transmission reliability can be improved.

It should be noted that, in the embodiment of the present application, the answering device may communicate with the reading and writing device. The read-write device may be a handheld or stationary device for reading or writing information about the answering device, or a device for communicating with the answering device. Alternatively, the read-write device may be a network-side device, such as a base station. Types of base stations include, but are not limited to, integrated access Backhaul node (IAB station), repeater (repeater), pole station (pole station), where the repeater may be a network controlled repeater (network controlled repeater). The read-write device may also be a terminal, other network access device, or a device with read-write function, such as a reader-writer.

The second switching condition may be preset, and the second switching condition is used for determining whether to switch the transmission parameter by the answering device. The answering machine may detect the second switching condition during transmission.

Alternatively, the answering device may switch the transmission parameters according to the capability information of the answering device if the second switching condition is satisfied.

Optionally, the response device may switch the transmission parameters according to a switching instruction of the read-write device.

Optionally, the response device may switch the transmission parameter according to the capability information of the response device and the switching instruction of the read-write device when the second switching condition is satisfied.

In some embodiments of the present application, after the answering device switches the transmission parameters, the first signal may be sent based on the switched transmission parameters. Alternatively, the first signal may include a signal generated based on a carrier signal modulation transmitted by the reader/writer device or other reader/writer device, or a signal generated based on a carrier signal modulation generated by the responder device.

In some embodiments of the application, the second handover condition may include at least one of:

the method comprises the steps that a signal sent by a read-write device is not received in a first time period;

the response equipment has different capability levels, works at low capability levels currently, and fails in signal transmission;

the response equipment has different capability levels, works at a low capability level currently, and does not receive a signal sent by the read-write equipment in a second time period;

detecting that the reference signal measurement quantity of the read-write equipment is smaller than or equal to a third threshold value;

switching between a communication state and a perception state;

Monitoring that the residual electric quantity is smaller than or equal to a fourth threshold value;

entering into a state of saving electric quantity.

In the embodiment of the application, the response device can switch the transmission parameters according to the second switching condition and the capability information of the response device or according to the second switching condition, the capability information of the response device and the switching instruction of the read-write device.

The second handover condition may include at least one of:

1) The signal sent by the read-write equipment is not received in the first time period. If the answering device does not detect the signal sent by the reading and writing device for a long time, communication with the reading and writing device is not possible. The answering device does not receive the signal sent by the read-write device in the first time period, and can be considered to currently meet the second switching condition. The first time period may be predefined or configured by the network side device;

2) Answering machines have different capability classes, currently operating at low capability classes, and signal transmission fails. In the case of answering devices having different capability levels, the answering device may operate at a low capability level, or at a high capability level. When the answering machine is operating at a low capability level and the signal transmission fails, it can be considered that the second switching condition is currently satisfied. Optionally, if the answering device has different capability levels, currently works with a low capability level, and there is a signal transmission failure in the multi-round counting process, it can be considered that the second switching condition is met currently, and the answering device needs to switch to a transmission parameter corresponding to the high capability level;

3) The answering machine has a different capability level, is currently operating at a low capability level, and does not receive a signal sent by the reading and writing device within a second period of time. If the answering device does not receive the signal sent by the read-write device in the second time period under the condition that the answering device has different capability levels and works at the low capability level currently, the answering device cannot communicate with the read-write device, and the answering device can be considered to meet the second switching condition currently and needs to switch to the transmission parameters corresponding to the high capability level. The second time period may be predefined or configured by the network side device;

4) The reference signal measurement amount of the read-write device is detected to be smaller than or equal to the third threshold value. If the reference signal measurement quantity of the read-write device is smaller than or equal to the third threshold value, the response device may not accurately monitor the control signaling and the like sent by the read-write device. When the response device detects that the reference signal measurement quantity of the read-write device is smaller than or equal to the third threshold value, the response device can consider that the second switching condition is met currently. The reference signal measurement may include a reference signal received power or a reference signal received quality. The third thresholds corresponding to different reference signal measurements may be the same or different. The third threshold is predefined or indicated by the network side device. Optionally, the third threshold is greater than or equal to a minimum receive sensitivity of the answering device;

5) And switching between the communication state and the perception state. When the response device senses the environment parameters, the response device may not be capable of communicating at the same time. Therefore, the answering device can be considered to currently satisfy the second switching condition when switching between the communication state and the perceived state. Switching between the communication state and the perceived state may include: switching from the communication state to the perception state, or switching from the perception state to the communication state, or switching from the communication state to the perception state, or switching from the perception state to the communication state;

6) The remaining power is monitored to be less than or equal to the fourth threshold. The answering device may monitor its own power, and when it is monitored that the remaining power is less than or equal to the fourth threshold, may consider that the second switching condition is currently satisfied, and consider that the answering device needs to switch to a transmission parameter corresponding to the energy storage state, or switch to a transmission parameter corresponding to the low transmission power level. The fourth threshold may be predefined or indicated by the network side device;

7) Entering into a state of saving electric quantity. If the answering device enters the power saving state, the second switching condition can be considered to be satisfied currently, and the answering device is considered to need to be switched to the transmission parameter corresponding to the low transmission power level.

The response device can switch the transmission parameters in time according to the at least one second switching condition and the capability information of the response device.

Information whether or not there is energy storage capability;

information whether or not there is a signal amplifying capability;

in the case of having a signal amplifying capability, size information of the signal amplifying capability;

Information whether or not there is frequency modulation capability;

in the case of having frequency modulation capability, size information of the frequency modulation capability;

Information on whether or not there is a perceptibility.

Time domain resources of the transmission signal;

frequency domain resources of the transmission signal;

Transmission power of the transmission signal;

The format of the transmission signal;

the content of the signal is transmitted.

Optionally, the format of the transmission signal may include at least one of:

The number of bits of the transmission signal;

whether the transmission signal contains a synchronization sequence;

The synchronization sequence length of the transmission signal;

modulation mode of transmission signal;

The data rate of the transmission signal;

The coding mode of the transmission signal;

a communication link rate at which signals are transmitted;

A preamble sequence of a transmission signal;

Transmission mode of the transmission signal.

Optionally, the coding manner of the transmission signal may include at least one of a duty cycle and a code rate.

Alternatively, the preamble sequence of the transmission signal may include one of a preamble with a plurality of preambles 0 and a preamble without a preamble 0.

Optionally, the content of the transmission signal may include at least one of:

identification information;

Data information.

Reference may be made to the description of the transmission parameters in the embodiment of the method shown in fig. 11, and no further description is given.

In some embodiments of the present application, before the answering machine switches the transmission parameters according to at least the second switching condition and the capability information of the answering machine, the method may further include the steps of:

The response device sends the transmission parameters to be switched to the read-write device.

In the embodiment of the application, the response device can switch the transmission parameters at least according to the second switching condition and the capability information of the response device. For example, the response device may switch the transmission parameters according to the second switching condition and the capability information of the response device, or switch the transmission parameters according to the second switching condition and the capability information of the response device, and the switching instruction of the read-write device.

For example, if the answering machine has frequency modulation capability, i.e., frequency offset capability, then based on the second switching condition and the capability, switching transmission parameters may include switching from [ Freq 1] to [ Freq 2], or a predefined frequency hopping pattern;

If the answering machine has signal amplification capability, switching transmission parameters may include switching from [ transmit power level 1] to [ transmit power level 2] according to a second switching condition and the capability;

If the answering machine has energy storage capability, switching transmission parameters according to the second switching condition and the capability can comprise switching from [ transmission duration T1] to [ transmission duration T2];

if the answering device has sensing capability, when the answering device senses environmental parameters, the sensing signal can be switched from [ OOK modulation ] to [ FSK modulation ] if OOK modulation causes a problem that the sensing signal is low in power due to matching problems.

Before the response device switches the transmission parameters according to at least the second switching condition and the capability information of the response device, the response device may send the transmission parameters to be switched to the read-write device. The transmission parameters to be switched to may be predefined or determined by the answering device based on its own capability information.

The response device sends the transmission parameter to be switched to the read-write device, and after the read-write device receives the transmission parameter to be switched sent by the response device, the read-write device can receive the uplink signal based on the transmission parameter to be switched to. Therefore, the read-write equipment can accurately detect the uplink signal, and the signal transmission reliability is improved.

the answering device does not send the transmission parameters to be switched to the reading and writing device.

Before the response device switches the transmission parameters according to at least the second switching condition and the capability information of the response device, the response device may not send the transmission parameters to be switched to the read-write device, and the read-write device may perform blind detection on the uplink signal, so that signaling overhead may be reduced.

In some embodiments of the present application, before the answering machine switches the transmission parameters at least according to the switching instruction of the reading and writing machine, the method may further include the steps of:

And the response device determines whether to respond to the switching instruction to switch the transmission parameters according to the switching instruction of the read-write device and the capability information of the response device.

In the embodiment of the application, the read-write equipment can instruct the response equipment to switch the transmission parameters according to the first switching condition or the capability information of the response equipment, and the response equipment can determine whether to respond to the switching instruction to switch the transmission parameters according to the switching instruction of the read-write equipment and the capability information of the response equipment.

Optionally, the response device determines to switch the transmission parameter in response to the switching instruction if it is determined that the switching instruction of the read-write device matches with the capability information of the response device. For example, the answering device has different capability levels, currently operates at a low capability level, the read-write device instructs the answering device to switch to the transmission parameter corresponding to the high capability level, the switching instruction matches the capability information of the answering device, and the answering device can switch to the transmission parameter corresponding to the high capability level in response to the switching instruction. Optionally, if the switching instruction of the read-write device includes a transmission parameter to be switched to, or the read-write device indicates a transmission parameter to be switched to in addition, the response device may switch to the transmission parameter to be switched indicated by the read-write device when determining to switch the transmission parameter in response to the switching instruction, or may determine the transmission parameter to be switched to according to its own capability information.

For example, the answering device may switch transmission parameters such as frequency domain resource, time domain resource, transmission power, etc. according to the switching instruction of the reading and writing device, for example, switch from [ Freq 1] to [ Freq 2], or switch from [ transmission power level 1] to [ transmission power level 2];

The answering device can also switch the format of the transmission signal according to the switching instruction of the reading and writing device, for example, switch from [ ASK modulation ] to [ FSK modulation ], switch from [ Miller coding ] to [ FM0 coding ];

The answering device may also perform switching of the content of the transmission signal, for example, from [ ID information ] to [ ID information+data information ], in accordance with a switching instruction of the reading-writing device.

Optionally, the response device determines not to respond to the switching instruction of the read-write device to switch the transmission parameters under the condition that the capability information of the switching instruction domain of the read-write device is not matched. For example, when the response device does not have the signal amplifying capability or the frequency-shifting capability, and the read-write device instructs the response device to switch to the transmitting power level 1 or Freq 1, the response device needs to amplify or shift the signal, and the switching instruction does not match with the capability information of the response device, the response device may not respond to the switching instruction, and does not switch the transmission parameters, or switch the transmission parameters according to the second switching condition and the capability information of the response device.

The response device determines whether to respond to the switching instruction to switch the transmission parameters according to the switching instruction of the read-write device and the capability information of the response device, and then switches the transmission parameters according to the switching instruction of the read-write device, so that the switching accuracy of the transmission parameters can be improved.

In some embodiments of the present application, in case the answering device determines to switch transmission parameters in response to a switch indication, the method may further comprise the steps of:

the response device sends confirmation information to the read-write device;

The answering machine does not send an acknowledgement.

In the embodiment of the application, after the read-write equipment indicates to the response equipment to switch the transmission parameters, the response equipment can determine whether to respond to the switching indication to switch the transmission parameters based on the switching indication and the capability information of the read-write equipment after receiving the switching indication of the read-write equipment.

Optionally, if the answering device determines to switch the transmission parameters in response to the switching instruction, the answering device may send acknowledgement information to the read-write device to inform the read-write device that the transmission parameters can be switched in response to the switching instruction, and perform signal transmission based on the switched transmission parameters.

Optionally, if the answering device determines to switch the transmission parameters in response to the switching instruction, the answering device may not send the acknowledgement information, and after switching the transmission parameters according to the switching instruction, signal transmission is performed based on the switched transmission parameters, so as to save signaling overhead.

In some embodiments of the present application, in the case where the answering device determines not to perform switching of the transmission parameters in response to the switching instruction, the method may further include one of:

the answering machine remains silent;

the response equipment performs signal transmission based on the current transmission parameters;

The response device sends failure information to the read-write device.

Optionally, if the answering device determines that the switching of the transmission parameter is not performed in response to the switching instruction, the answering device may send Failure information, such as Failure command, to the read-write device, so as to inform the read-write device that the switching instruction thereof does not match with the capability information of the answering device, the read-write device may perform the switching instruction again according to the Failure information, and if the new switching instruction matches with the capability information of the answering device, the answering device may perform the switching of the transmission parameter based on the new switching instruction sent by the read-write device.

Alternatively, if the answering device determines that the switching of transmission parameters is not performed in response to the switching instruction, the answering device may keep silent and not transmit failure information. The read-write device may determine that the response device does not respond to the switching indication if feedback information of the response device about the switching indication is not received within a set period of time, and may perform switching indication again, and if the new switching indication matches with capability information of the response device, the response device may perform switching of transmission parameters based on the new switching indication sent by the read-write device.

Alternatively, if the answering device determines that switching of the transmission parameters is not performed in response to the switching instruction, the answering device may perform signal transmission based on the current transmission parameters. Optionally, after sending the failure information to the read-write device, the response device may perform signal transmission based on the current transmission parameter, so as to inform the read-write device that the transmission parameter is not switched.

In some embodiments of the present application, the answering device sends the first signal based on the transmission parameter switched to, and may include one of:

the response device sends a first signal to the read-write device based on the switched transmission parameters;

The response equipment sends a first signal to other read-write equipment based on the switched transmission parameters;

Wherein the other read-write equipment is different from the read-write equipment.

In the embodiment of the application, after the response device switches the transmission parameters, the first signal can be sent to the read-write device based on the switched transmission parameters. That is, when the response device switches transmission parameters at least according to the switching instruction of the read-write device, the read-write device that transmits the switching instruction to the response device and the read-write device that receives the first signal are the same read-write device.

Or the response device may send the first signal to the other read-write device based on the switched transmission parameter, that is, in the case that the response device switches the transmission parameter according to at least the switching instruction of the read-write device, the read-write device that sends the switching instruction to the response device is a different read-write device than the read-write device that receives the first signal.

In some embodiments of the present application, before the answering machine switches the transmission parameters, the method may further include the steps of:

the response device sends the capability information to the read-write device.

The response device sends capability information to the read-write device, and the read-write device can instruct the response device to switch the transmission parameters based on the capability information of the response device or based on the capability information of the response device and the first switching condition, so as to ensure that the switching instruction of the read-write device is matched with the capability information of the response device.

It should be noted that, in the embodiment of the present application, the transmission parameter to be switched to and the transmission parameter to be switched to may include the same content, and may also include different contents. For example, if the read-write device instructs the response device to switch the transmission parameters, and instructs the response device to the transmission parameters to be switched, the response device determines that the transmission parameters are switched in response to the switching instruction according to the switching instruction and the capability information of the response device, and after the response device switches the transmission parameters, the transmission parameters to be switched are the transmission parameters to be switched, which are indicated by the read-write device, and the transmission parameters to be switched include the same content. For another example, if the read-write device instructs the response device to switch the transmission parameters and instructs the response device to the transmission parameters to be switched, the response device determines, according to the switching instruction and its own capability information, that the transmission parameters are not switched in response to the switching instruction, but are switched according to the second switching condition and its own capability information, and then the transmission parameters to be switched are different from the transmission parameters to be switched indicated by the read-write device, where the two transmission parameters include different contents. I.e. if the transmission parameter to be switched to is determined by the read-write device, it may be the same or different from the transmission parameter to which the answering device is switched. If the transmission parameter to be switched to is determined by the answering machine, it is identical to the transmission parameter to be switched to by the answering machine.

It should be noted that, in the embodiment of the present application, each process implemented by the embodiment of the method shown in fig. 12 and the embodiment of the method shown in fig. 11 may refer to each other, and achieve the same technical effects, and in order to avoid repetition, no detailed description is given here.

In order to facilitate understanding, the technical solutions provided by the embodiments of the present application are described again by way of specific examples.

The two read-write devices in the flowcharts referred to in the following examples may be the same read-write device or may be different read-write devices; switching between different modes of the answering machine can be taken as a special case in the corresponding example. For example, in example three, switching between transmit power levels can be further extended to switching of the reflective amplifier, i.e., switching between different modes.

The different signaling in the following example is defined as follows:

CMD1: the read-write equipment is used for selecting part of response equipment to carry out subsequent communication from the read-write equipment to the response equipment;

CMD2: the read-write equipment sends a response device to instruct the response device to carry out subsequent communication, wherein the subsequent communication comprises a range of random numbers generated by the response device, a data rate, a frequency domain resource, a time domain resource and the like;

CMD3: transmitting temporary identification information from the response equipment to the read-write equipment;

CMD4-1: transmitting ACK with temporary identification information from the read-write equipment to the response equipment;

CMD4-2: transmitting NAK with temporary identification information from the read-write equipment to the response equipment;

CMD5: the EPC/CRC and/or other data is sent by the answering device to the reading and writing device.

Example one: the read-write device instructs the answering device to switch the transmission parameters

The present example provides that the read-write device instructs the response device to switch the relevant content of the transmission parameter according to the capability information of the response device, including the transmission flow, the instruction content, and the like.

The first switching condition for triggering the read-write device to send the transmission parameter switching indication may include at least one of:

a) Detecting a resource conflict: detecting two or more temporary identifications on the same time-frequency resource, for example, when the counters (counters) of two tag devices are simultaneously 0, simultaneously sending CMD3 to the read-write device in the same frequency, thereby causing the read-write device to detect resource conflict;

b) Detection of signal transmission failure: the method comprises the steps that signals of the response equipment are not detected within a set time period, or signals of the corresponding response equipment are not detected in a multi-round counting process;

c) Detecting that the measured quantity such as the reference signal received power/received quality is lower than the threshold R, for example, due to poor channel quality or small transmission power of the answering device, the power of the received signal of the reading and writing device may be lower than the threshold;

d) Detecting auxiliary information transmitted by the answering device, for example, when the answering device is not storing enough energy, the communication is forced to be interrupted; or the response equipment has a sensing function, but is limited to matching capability when sensing environmental parameters, and cannot simultaneously carry out communication states;

e) The checking efficiency of a certain round of checking flow is detected to be smaller.

Fig. 13 shows a transmission flow in which the answering machine switches the transmission parameters using the insufficient power of the answering machine as the first switching condition. For example, when the power of the answering device is insufficient, the answering device carries the auxiliary information of insufficient power when transmitting CMD 3. After receiving the auxiliary information of insufficient electric quantity, the read-write equipment displays a response device switching transmission parameter when sending CMD 4-1. For example, the answering device switches to a low transmit power level to ensure that the remaining data can be sent out, or to instruct the answering device to switch from a communication state to a stored energy state.

The different states (status) in fig. 13 represent the transmission flow before and after the transmission parameter switching by the answering device. The read-write device indicates to switch the transmission parameters when sending CMD4-1 according to the capability information of the response device, and may indicate in different CMD according to the first switching condition, in addition to CMD 4-1.

Switchable transmission parameters can be divided into three categories: orthogonal/non-orthogonal resources; the format of the transmission signal; the content of the signal is transmitted. For example, switching resources such as frequency domain, time domain, power domain, etc.; or switching different bit numbers or modulation modes of uplink transmission, for example, the bit number specified by status 1 is 16/modulation mode is ASK; the bit number specified by status 2 is 32/modulation mode is FSK; or status 1 is FM0 encoding; status 2 is Miller code. Bit 0, bit 1 different duty cycles can also be used to distinguish between different states. If transmission is performed by Miller coding, the answering device can also be put in different states by switching different subcarrier coefficients. For example, status 1 has a subcarrier coefficient of m=2; status 2 has a subcarrier coefficient of m=4; status 3 has a subcarrier coefficient of m=8. status 3 is not shown in fig. 13.

The preamble is of a different type as the uplink communication link uses Miller coding or FM0 coding. Therefore, if the indication parameter trext=1, the encoded extended preamble band 12 preambles 0 can correspond to status 1; if a switch from status 1 to status 2 is required, the parameter trext=0 is indicated, and the encoded extended preamble does not have preamble 0. In addition, switching of different transmission contents may be instructed, for example, status 1 transmits only ID information, status 2 transmits ID information and data information.

Example two: the response device switches the transmission parameters according to the second switching condition and the capability information of the response device

The example gives a transmission flow, indication content and the like of the response device switching the transmission parameters according to the second switching condition and the capability information of the response device. It is worth noting that the response device autonomously determines that the transmission parameter to be switched is an implementation behavior of the response device, but when the response device determines that the transmission parameter to be switched, the response device selects to feed back or not feed back the transmission parameter to be switched to the read-write device. If the feedback is performed, the read-write equipment can receive an uplink signal in the appointed resource, and the behavior is friendly to the read-write equipment; if the feedback is not generated, the read-write equipment performs blind detection on the corresponding received signal after the transmission parameters are switched, and the behavior corresponds to friendly equipment.

The second handover condition may include at least one of:

a) The response device detects that the signal transmission of the read-write device fails, for example, the signal sent by the read-write device is not detected within a specified duration T;

b) The answering device detects that the reference signal received power is lower than a threshold value, the threshold value is predefined or indicated by the network side device, and it is worth noting that the threshold value should be greater than or equal to the minimum receiving sensitivity of the answering device;

c) The answering device needs to switch from the communication state to the perception state or from the perception state to the communication state, for example, in a scene that cannot communicate at the same time when the answering device perceives environmental parameters;

d) The answering device detects that the energy of its energy storage capacitor is insufficient to maintain subsequent communications, e.g., when the answering device is low in power, it switches to an energy storage state, or to a low signal transmission power level.

Fig. 14 shows a transmission flow of autonomous switching transmission parameters of the response device, which is given by taking an example that the response device does not detect a signal sent by the read-write device within a specified time period T:

status 1

1) The read-write equipment sends CMD1 and CMD2;

2) The response device with the counter of 0 sends CMD3 to the read-write device at the frequency f 1;

3) After receiving CMD3 sent by the response equipment, the read-write equipment sends CMD4-1 signaling carrying the CMD 3;

4) Within a specified time length T, the response device does not receive CMD4-1 signaling carrying CMD3;

status 2

5) Because the counter of the response device is still 0, the response device switches the frequency parameter, switches from the frequency f1 to the frequency f2, and sends CMD3 signaling to the read-write device again;

6) After receiving CMD3 of the response device, the read-write device sends CMD4-1 signaling carrying CMD3 at frequency f 2;

7) The response device receives CMD4-1 and sends CMD5 to the read-write device.

The above flow can be seen that after the response device detects that the signal transmission of the read-write device fails, the transmission parameters are switched to continue the subsequent flow, so that the problem of restarting the counting is avoided, and the counting efficiency is improved to a certain extent.

Example three: the response device switches the transmission parameters according to the transmission parameters to be switched, which are indicated by the read-write device

The example provides a transmission flow of switching transmission parameters by the response device according to the transmission parameters to be switched indicated by the read-write device. The transmission parameters to be switched to indicated by the read-write equipment mainly comprise time-frequency resources, transmitting power, formats of transmission signals, contents of the transmission signals and the like.

Fig. 15 shows a corresponding transmission procedure given by taking the handover transmit power level as an example. Wherein the different transmit power levels may be determined by the answering device with/without the use of a reflective amplifier, the amplification of the reflective amplifier, the degree of matching or the modulation depth. For example, the transmission power level 1 is transmission power without using a reflective amplifier, and the transmission power level 2 is transmission power with a reflective amplifier.

Alternatively, the answering device may report its capability information, e.g., with a reflective amplifier, a range of amplification factors, etc.

status 1：

1) The read-write equipment sends CMD1& CMD2

2) The response device with the counter of 0 sends CMD3 to the read-write device with the transmitting power corresponding to the transmitting power level of 1;

3) The read-write equipment receives CMD3, but the receiving power is lower than a specified threshold value;

4) The read-write equipment sends CMD4-1 carrying CMD3 and instructs the response equipment to switch to the transmitting power level 2;

status 2：

5) The answering device switches to transmit power level 2 and transmits CMD5 at a transmit power corresponding to transmit power level 2.

The above flow shows that the read-write device can improve the reliability of signal transmission of the response device by indicating the response device to switch different transmission power levels.

In addition, the read-write equipment indicates the response equipment to switch the transmission parameters, so that the resource waste caused by the feedback problem can be avoided.

Example four: resolving conflict by switching transmission parameters through response equipment, and improving reliability

This example presents a transmission flow to resolve conflicts by switching transmission parameters by the answering device. Unlike the binary tree concept of the related protocol, the present scheme mainly resolves conflicts based on the transmission parameter switching procedure of example one to example three.

In this example, when CMD4-2 is sent, a conflicting instruction is carried:

When the read-write equipment sends a conflict instruction, the conflict instruction carries transmission parameter switching instruction information and can be multiplexed with the transmission flow of the first example, and the details are not repeated here;

When the read-write device sends the conflict command, the transmission parameter switching indication information is not carried, and the response device determines the transmission parameter to be switched to according to the received conflict command, and the transmission flow of this case is mainly given in this example 4-1.

When the read-write equipment does not send the conflict instruction, the response equipment determines the transmission parameters to be switched to according to the second switching condition and the capability information of the response equipment. At this time, the second switching condition is that the answering device for checking belongs to the low-capability device, the network still cannot be accessed in the multi-round checking flow, the network is accessed after the switching to the high-capability parameter is needed, or the instruction information of the reading and writing device is not received in the specified time T, and the possible conflict is considered to exist, and the transmission flow of this situation is mainly given in the embodiment 4-2.

It should be noted that when the transmission parameters are switched to resolve the conflict, the answering device needs to meet the specified delay requirement. For example, if the transmission delay increases to be insufficient due to the switching of the transmission parameters, optionally, the answering device exits the inventory procedure.

Example 4-1: the conflict response equipment receives the conflict indication information sent by the read-write equipment

In the conflict solution of the related protocol, if the read-write device detects a conflict, the protocols of ISO 18000-4, mode1& mode4, 6a &6b, etc. will display a conflict instruction, for example, failure signaling (Fail command), close slot signaling (Close slot command), which is used to instruct the answering device to resolve the conflict based on the idea of binary tree. This example differs from this, as shown in fig. 16:

status 1：

1) The read-write equipment sends CMD2 to the response equipment selected by CMD1 at the frequency of f 1;

2) If the counter of the two response devices is 0 at the same time, CMD3 is sent at the same frequency f 1;

3) The read-write equipment detects two same-frequency CMDs 3 at the same time, confirms that the conflict exists, and sends CMDs 4-2 to carry conflict indication information;

status 1&status 2：

4) The conflicting response device receives CMD4-2 carrying conflict indication information, and switches frequency domain resources according to own capability information, for example, two conflicting response devices, one of which can carry frequency of tens of megahertz (MHz), and the other of which has no or very weak frequency carrying capability, and can carry frequency of tens of megahertz (MHz);

Optionally, the response device with the transmission parameter switched feeds back the switched transmission parameter to the read-write device;

5) The read-write equipment receives CMD3 sent by the response equipment at different frequencies and sends CMD4-1 to the corresponding response equipment at corresponding frequencies;

6) After receiving CMD4-1, the response device sends CMD5 to the read-write device.

The transmission flow solves the conflict through different frequency resources aiming at the response equipment with different frequency offset capabilities, and improves the transmission reliability to a certain extent.

Example 4-2: the conflict response equipment does not receive the conflict indication information sent by the read-write equipment

As shown in fig. 17:

status 1：

3) The read-write equipment detects two same-frequency CMDs 3 at the same time, and sends/does not send CMDs 4-2;

status 1&status 2：

4) The conflict response equipment does not receive any information sent by the read-write equipment and enters a waiting (silence) period, wherein the waiting period duration T can be predefined or indicated by the read-write equipment through CMD1 or CMD 2;

5) After the time T, the response equipment switches frequency domain resources according to own capability information, for example, two response equipment which have collision, wherein one of the response equipment can carry frequency of tens of megahertz, and the other response equipment has no or very weak frequency carrying capability and can carry frequency of tens of megahertz;

6) The read-write equipment receives CMD3 sent by the response equipment at different frequencies and sends CMD4-1 to the corresponding response equipment at corresponding frequencies;

7) After receiving CMD4-1, the response device sends CMD5 to the read-write device.

Furthermore, it is possible that all the answering devices access the network multiple times at the same frequency if no signaling indicating a collision is received or the answering devices do not actively switch the transmission parameters during the checking process. The response equipment can realize the frequency carrying capacity through transmission parameter switching. At this time, the response device with frequency carrying capability can be instructed to switch its transmission parameters according to the configured frequency domain resources by the CMD1 or CMD2 command, so as to improve the probability of accessing the network.

According to the transmission control method provided by the embodiment of the application, the execution main body can be a transmission control device. In the embodiment of the present application, a transmission control method executed by a transmission control device is taken as an example, and the transmission control device provided in the embodiment of the present application is described.

As shown in fig. 18, the transmission control apparatus 1800 may include the following modules:

An indication module 1810, configured to instruct the answering machine to switch the transmission parameters according to the first switching condition or the capability information of the answering machine.

By applying the device provided by the embodiment of the application, the read-write equipment instructs the response equipment to switch the transmission parameters according to the first switching condition or the capability information of the response equipment, so that the response equipment can perform signal transmission based on the switched transmission parameters after switching the transmission parameters, thereby realizing effective control on the signal transmission and improving the reliability of the signal transmission.

In some embodiments of the application, the answering device is any one of a set of answering devices, including at least two different types of answering devices, or including at least two different answering devices with the same capabilities, or including at least two different answering devices with different capabilities.

In some embodiments of the application, the first switching condition comprises at least one of:

detecting that the signal transmission of the response equipment fails;

Detecting auxiliary information sent by the response equipment;

In some embodiments of the present application, the auxiliary information includes at least one of power shortage information, power saving information, and perceived business process information.

In some embodiments of the application, the first threshold is predefined or indicated by the network side device;

Or, the second threshold is predefined or indicated by the network side device.

In some embodiments of the application, the capability information includes at least one of:

Information whether or not there is energy storage capability;

information whether or not there is a signal amplifying capability;

Information whether or not there is frequency modulation capability;

Information on whether or not there is a perceptibility.

In some embodiments of the application, the transmission parameters include at least one of:

Time domain resources of the transmission signal;

frequency domain resources of the transmission signal;

Transmission power of the transmission signal;

The format of the transmission signal;

the content of the signal is transmitted.

In some embodiments of the application, the format of the transmission signal comprises at least one of:

The number of bits of the transmission signal;

whether the transmission signal contains a synchronization sequence;

The synchronization sequence length of the transmission signal;

modulation mode of transmission signal;

The data rate of the transmission signal;

The coding mode of the transmission signal;

a communication link rate at which signals are transmitted;

A preamble sequence of a transmission signal;

Transmission mode of the transmission signal.

In some embodiments of the present application, the coding mode of the transmission signal includes at least one of a duty cycle and a code rate;

or, the preamble sequence of the transmission signal includes one of a preamble with a plurality of preambles 0 and a preamble without preamble 0.

In some embodiments of the application, the content of the transmission signal comprises at least one of:

identification information;

Data information.

In some embodiments of the present application, the transmission control apparatus 1800 further includes a first receiving module for:

capability information sent by the answering device is received before the answering device is instructed to switch transmission parameters.

In some embodiments of the present application, the indication module 1810 is configured to perform one of the following:

transmitting indication information to the response equipment, wherein the indication information is used for indicating the response equipment to switch transmission parameters;

the answering device is instructed to switch transmission parameters in a predefined manner.

In some embodiments of the application, the indication information comprises the transmission parameters to be switched to, or the indication information does not comprise the transmission parameters to be switched to.

In some embodiments of the application, an indication module 1810 is configured to:

the switching of the transmission parameters is implicitly indicated to the answering machine by at least one of:

A coding rate; a downlink communication link rate; frequency domain resources; a time unit length; a carrier type; a preamble sequence type; signal sequence type.

In some embodiments of the present application, the transmission control apparatus 1800 further includes a second receiving module for:

After the response device is instructed to switch the transmission parameters, determining a first transmission parameter, wherein the first transmission parameter is a transmission parameter used by the response device;

The first signal transmitted by the answering device is received based on the first transmission parameter.

In some embodiments of the application, the first signal comprises a signal generated based on a carrier signal modulation transmitted by the read-write device or other read-write device, or comprises a signal generated based on a carrier signal modulation generated by the answering device.

In some embodiments of the application, the indication module 1810 is further configured to:

after the response device is instructed to switch the transmission parameters, the transmission parameters to be switched to by the response device are sent to other read-write devices.

In some embodiments of the present application, the transmission control apparatus 1800 further includes a third receiving module for:

and before the response device is instructed to switch the transmission parameters, receiving the transmission parameters to be switched to of the response device sent by other read-write devices.

The transmission control apparatus 1800 provided in the embodiment of the present application can implement each process implemented by the embodiments of the methods shown in fig. 11 and fig. 13 to 17, and achieve the same technical effects, and in order to avoid repetition, a detailed description is omitted here.

As shown in fig. 19, the transmission control apparatus 1900 may include the following modules:

a switching module 1910 configured to switch transmission parameters according to at least one of:

Second switching conditions and capability information of the response device;

A switching instruction of the read-write equipment;

a transmitting module 1920, configured to transmit the first signal based on the switched transmission parameter.

By applying the device provided by the embodiment of the application, the signal transmission reliability can be improved by sending the first signal based on the switched transmission parameters after switching the transmission parameters according to the second switching conditions and the capability information of the response equipment, or according to the switching instruction of the read-write equipment, or according to the second switching conditions and the capability information of the response equipment and the switching instruction of the read-write equipment.

In some embodiments of the application, the second handover condition comprises at least one of:

switching between a communication state and a perception state;

entering into a state of saving electric quantity.

In some embodiments of the application, the third threshold is predefined or indicated by the network side device;

or, the fourth threshold is predefined or indicated by the network side device.

Information whether or not there is energy storage capability;

information whether or not there is a signal amplifying capability;

Information whether or not there is frequency modulation capability;

Information on whether or not there is a perceptibility.

Time domain resources of the transmission signal; frequency domain resources of the transmission signal; transmission power of the transmission signal; the format of the transmission signal; the content of the signal is transmitted.

The number of bits of the transmission signal; whether the transmission signal contains a synchronization sequence; the synchronization sequence length of the transmission signal; modulation mode of transmission signal; the data rate of the transmission signal; the coding mode of the transmission signal; a communication link rate at which signals are transmitted; a preamble sequence of a transmission signal; transmission mode of the transmission signal.

identification information; data information.

In some embodiments of the present application, the sending module 1920 is further configured to perform, before switching the transmission parameters according to at least the second switching condition and the capability information of the answering machine, one of:

transmitting a transmission parameter to be switched to the read-write equipment;

and the transmission parameters to be switched to are not sent to the read-write equipment.

In some embodiments of the present application, the transmission control apparatus 1900 further includes a determining module configured to:

Before switching the transmission parameters at least according to the switching instruction of the read-write equipment, determining whether to respond to the switching instruction to switch the transmission parameters according to the switching instruction of the read-write equipment and the capability information of the response equipment.

In some embodiments of the present application, the transmission control apparatus 1900 further includes a response module for performing one of the following in a case where it is determined to perform handover of the transmission parameter in response to the handover instruction:

Transmitting confirmation information to the read-write equipment;

No acknowledgement is sent;

Or, in the case where it is determined that the switching of the transmission parameter is not performed in response to the switching instruction, performing one of:

Keep silent;

signal transmission is carried out based on the current transmission parameters;

And sending failure information to the read-write equipment.

In some embodiments of the present application, the sending module 1920 is configured to perform one of:

transmitting a first signal to the read-write equipment based on the switched transmission parameters;

Transmitting a first signal to other read-write equipment based on the switched transmission parameters;

wherein, other read-write equipment and read-write equipment are different read-write equipment.

In some embodiments of the present application, the sending module 1920 is further configured to:

The capability information is sent to the read-write device before switching the transmission parameters.

The transmission control apparatus 1900 provided in the embodiment of the present application can implement each process implemented by the method embodiments shown in fig. 12 to 17, and achieve the same technical effects, and in order to avoid repetition, a detailed description is omitted here.

As shown in fig. 20, the embodiment of the present application further provides a communication device 2000, including a processor 2001 and a memory 2002, where the memory 2002 stores a program or an instruction that can be executed on the processor 2001, for example, when the communication device 2000 is a read/write device, the program or the instruction is executed by the processor 2001 to implement the steps of the method embodiments shown in fig. 11 and fig. 13 to 17, and the same technical effects can be achieved. When the communication device 2000 is a answering device, the program or instructions, when executed by the processor 2001, implement the steps of the method embodiments shown in fig. 12-17, and achieve the same technical effects, and are not repeated here.

The embodiment of the present application further provides a readable storage medium, where a program or an instruction is stored, where the program or the instruction realizes each process of the method embodiments shown in fig. 11 to 17 and can achieve the same technical effect when executed by a processor, and in order to avoid repetition, a description is omitted here.

Wherein the processor is a processor in the communication device described in the above embodiment. The readable storage medium includes computer readable storage medium such as computer readable memory ROM, random access memory RAM, magnetic or optical disk, etc. In some examples, the readable storage medium may be a non-transitory readable storage medium.

The embodiment of the application further provides a chip, which comprises a processor and a communication interface, wherein the communication interface is coupled with the processor, and the processor is used for running a program or instructions to realize the processes of the method embodiments shown in fig. 11-17, and the same technical effects can be achieved, so that repetition is avoided, and the description is omitted here.

It should be understood that the chips referred to in the embodiments of the present application may also be referred to as system-on-chip chips, or the like.

The embodiments of the present application further provide a computer program/program product stored in a storage medium, where the computer program/program product is executed by at least one processor to implement the respective processes of the method embodiments shown in fig. 11 to 17 and achieve the same technical effects, and are not repeated herein.

The embodiment of the application also provides a communication system, which comprises: the read-write device may be used to perform the steps of the method embodiments shown in fig. 11, 13-17 as described above, and the answering device may be used to perform the steps of the method embodiments shown in fig. 12-17 as described above.

It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element. Furthermore, it should be noted that the scope of the methods and apparatus in the embodiments of the present application is not limited to performing the functions in the order shown or discussed, but may also include performing the functions in a substantially simultaneous manner or in an opposite order depending on the functions involved, e.g., the described methods may be performed in an order different from that described, and various steps may be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.

From the description of the embodiments above, it will be apparent to those skilled in the art that the above-described example methods may be implemented by means of a computer software product plus a necessary general purpose hardware platform, but may also be implemented by hardware. The computer software product is stored on a storage medium (e.g., ROM, RAM, magnetic disk, optical disk, etc.) and includes instructions for causing a read-write device or answering device to perform the methods according to various embodiments of the present application.

The embodiments of the present application have been described above with reference to the accompanying drawings, but the present application is not limited to the above-described embodiments, which are merely illustrative and not restrictive, and many forms of embodiments may be made by those of ordinary skill in the art without departing from the spirit of the application and the scope of the claims, which fall within the protection of the present application.

Claims

1. A transmission control method, comprising:

The read/write device instructs the answering device to switch transmission parameters according to the first switching condition or the capability information of the answering device.

2. The method according to claim 1, wherein the first switching condition comprises at least one of the following:

detecting that there is a resource conflict between the answering device and other answering devices;

detecting that the answering device signal transmission fails;

detecting that a reference signal measurement quantity of the transponder device is less than or equal to a first threshold;

detecting auxiliary information sent by the answering device;

It is detected that the inventory efficiency of the first inventory process in the inventory phase is less than or equal to a second threshold.

3. The method according to claim 2 is characterized in that the auxiliary information includes at least one of insufficient power information, power saving information and perception service processing information.

4. The method according to claim 2 or 3, characterized in that the first threshold is predefined or indicated by a network side device;

Alternatively, the second threshold is predefined or indicated by a network-side device.

5. The method according to any one of claims 1 to 4, characterized in that the capability information includes at least one of the following:

Information on whether it has energy storage capacity;

If there is energy storage capacity, information on the size of the energy storage capacity;

Information on whether it has the ability to amplify signals;

In the case of signal amplification capability, information on the magnitude of the signal amplification capability;

Information on whether it has frequency modulation capability;

In the case of frequency modulation capability, information on the magnitude of the frequency modulation capability;

Information about whether or not a person has the ability to perceive.

6. The method according to any one of claims 1 to 5, wherein the transmission parameter comprises at least one of the following:

Time domain resources for transmitting signals;

Frequency domain resources for transmitting signals;

The transmission power of the transmission signal;

The format of the transmitted signal;

The content of the transmitted signal.

7. The method according to claim 6, wherein the format of the transmission signal comprises at least one of the following:

The number of bits of the transmitted signal;

Whether the transmission signal contains a synchronization sequence;

The length of the synchronization sequence of the transmission signal;

Modulation method of the transmitted signal;

The data rate of the transmitted signal;

The encoding method of the transmitted signal;

The communication link rate at which the signal is transmitted;

A preamble sequence of a transmission signal;

The transmission mode of the transmitted signal.

8. The method according to claim 7, characterized in that the encoding method of the transmission signal includes at least one of a duty cycle and a code rate;

Or, the preamble sequence of the transmission signal includes one of a preamble code with multiple preamble 0s and a preamble code without preamble 0s.

9. The method according to any one of claims 6 to 8, wherein the content of the transmission signal includes at least one of the following:

Identification information;

Data information.

10. The method according to any one of claims 1 or 9, characterized in that before the read/write device instructs the answering device to switch transmission parameters, the method further comprises:

The read/write device receives the capability information sent by the answering device.

11. The method according to any one of claims 1 to 10, characterized in that the read/write device instructs the answering device to switch transmission parameters, comprising one of the following:

The read/write device sends instruction information to the answering device, where the instruction information is used to instruct the answering device to switch transmission parameters;

The read/write device instructs the answering device to switch transmission parameters in a predefined manner.

12. The method according to claim 11, characterized in that the indication information includes the transmission parameter to be switched to, or the indication information does not include the transmission parameter to be switched to.

13. The method according to any one of claims 1 to 10, characterized in that the read/write device instructs the answering device to switch transmission parameters, comprising:

The read/write device implicitly indicates to the answering device to switch the transmission parameters by at least one of the following:

Coding rate;

Downlink communication link rate;

Frequency domain resources;

Time unit length;

Carrier type;

Preamble sequence type;

Signal sequence type.

14. The method according to any one of claims 1 to 13, characterized in that after the read/write device instructs the answering device to switch transmission parameters, the method further comprises:

The read/write device determines a first transmission parameter, where the first transmission parameter is a transmission parameter used by the answering device;

The reading and writing device receives a first signal sent by the answering device based on the first transmission parameter.

15. The method according to claim 13, characterized in that the first signal includes a signal generated by modulating a carrier signal sent by the read/write device or other read/write devices, or includes a signal generated by modulating a carrier signal generated by the answering device.

16. The method according to any one of claims 1 to 13, characterized in that after the read/write device instructs the answering device to switch transmission parameters, the method further comprises:

The read/write device sends the transmission parameters of the answering device to be switched to other read/write devices;

Alternatively, before the read/write device instructs the answering device to switch the transmission parameters, the method further includes:

The read/write device receives the transmission parameters to be switched to of the response device sent by other read/write devices.

17. A transmission control method, comprising:

The answering device switches the transmission parameters according to at least one of the following:

a second switching condition and capability information of the answering device;

Switching instructions for read/write devices;

The answering device sends a first signal based on the switched transmission parameters.

18. The method according to claim 17, wherein the second switching condition comprises at least one of the following:

No signal sent by the read/write device is received within the first time period;

The answering device has different capability levels and is currently operating at a low capability level, and signal transmission fails;

The answering device has different capability levels, currently operates at a low capability level, and does not receive a signal sent by the reading and writing device in a second time period;

It is detected that the reference signal measurement amount of the read/write device is less than or equal to a third threshold;

Switching between communication state and perception state;

It is detected that the remaining power is less than or equal to a fourth threshold;

Enter power saving mode.

19. The method according to claim 18, characterized in that the third threshold is predefined or indicated by a network side device;

Alternatively, the fourth threshold is predefined or indicated by a network side device.

20. The method according to any one of claims 17 to 19, wherein the capability information includes at least one of the following:

Information on whether it has energy storage capacity;

Information on whether it has the ability to amplify signals;

Information on whether it has frequency modulation capability;

Information about whether or not a person has the ability to perceive.

21. The method according to any one of claims 17 to 20, wherein the transmission parameter comprises at least one of the following:

Time domain resources for transmitting signals;

Frequency domain resources for transmitting signals;

The transmission power of the transmission signal;

The format of the transmitted signal;

The content of the transmitted signal.

22. The method according to claim 21, wherein the format of the transmission signal comprises at least one of the following:

The number of bits of the transmitted signal;

Whether the transmission signal contains a synchronization sequence;

The length of the synchronization sequence of the transmission signal;

Modulation method of the transmitted signal;

The data rate of the transmitted signal;

The encoding method of the transmitted signal;

The communication link rate at which the signal is transmitted;

A preamble sequence of a transmission signal;

The transmission mode of the transmitted signal.

23. The method according to claim 22, characterized in that the encoding method of the transmission signal includes at least one of a duty cycle and a code rate;

24. The method according to any one of claims 21 to 23, wherein the content of the transmission signal includes at least one of the following:

Identification information;

Data information.

25. The method according to any one of claims 17 to 24, characterized in that before the answering device switches the transmission parameters at least according to the second switching condition and the capability information of the answering device, the method further comprises one of the following:

The answering device sends the transmission parameters to be switched to the reading and writing device;

The answering device does not send the transmission parameters to be switched to to the reading and writing device.

26. The method according to any one of claims 17 to 24, characterized in that before the answering device switches the transmission parameters at least according to the switching instruction of the reading and writing device, the method further comprises:

The response device determines whether to switch the transmission parameters in response to the switching instruction of the read/write device and the capability information of the response device.

27. The method according to claim 26, characterized in that, when the answering device determines to switch the transmission parameters in response to the switching indication, the method further comprises one of the following:

The answering device sends confirmation information to the reading and writing device;

The answering device does not send a confirmation message;

Or, in the case where the answering device determines not to switch the transmission parameters in response to the switching indication, the method further includes one of the following:

The answering device remains silent;

The answering device performs signal transmission based on current transmission parameters;

The answering device sends a failure message to the reading and writing device.

28. The method according to any one of claims 17 to 27, wherein the answering device sends a first signal based on the switched transmission parameters, comprising one of the following:

The answering device sends a first signal to the reading and writing device based on the switched transmission parameters;

The answering device sends a first signal to other reading and writing devices based on the switched transmission parameters;

Among them, the other reading and writing devices and the reading and writing device are different reading and writing devices.

29. The method according to any one of claims 17 to 28, characterized in that the first signal includes a signal generated by modulation of a carrier signal sent by a read/write device or other read/write device, or includes a signal generated by modulation of a carrier signal generated by the answering device.

30. The method according to any one of claims 17 to 29, characterized in that before the answering device switches the transmission parameters, the method further comprises:

The answering device sends capability information to the reading and writing device.

31. A transmission control device, comprising:

The instructing module is used to instruct the answering device to switch the transmission parameters according to the first switching condition or the capability information of the answering device.

32. A transmission control device, comprising:

The switching module is used to switch the transmission parameters according to at least one of the following:

The second switching condition and the capability information of the answering device;

Switching indication of read/write devices;

A sending module is used to send a first signal based on the switched transmission parameters.

33. A communication device, characterized in that it comprises 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 transmission control method as described in any one of claims 1 to 30 are implemented.

34. A readable storage medium, characterized in that the readable storage medium stores a program or instruction, and when the program or instruction is executed by a processor, the steps of the transmission control method as described in any one of claims 1 to 30 are implemented.