Information transmission method and device, equipment and storage medium

Abstract

Embodiments of the present application provide an information transmission method, device, equipment and storage medium, the method comprises: a sending end generates a clock division signal based on a clock auxiliary signal and an encoded original binary information sequence; generate an output signal based on the clock division signal and an amplitude shift keying (ASK) signal, and send to the receiving end; wherein the period of the clock auxiliary signal is: a fraction of the reference time interval corresponding to the encoding operation.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of communication, and in particular to an information transmission method and device, equipment and a storage medium. BACKGROUND

[0002] In the prior art, the forward link of a reader (or receiver) sending instructions to a tag in a radio frequency identification (RFID) system adopts pulse interval encoding (PIE) or an improved pulse encoding mode. The PIE represents data by defining different time widths between pulse falling edges. A large number of low-cost passive tags deployed have the characteristics of extremely simple circuit structure, and the energy storage capacitor of the tag is often only a few tens of nanofarads. If there is a low-level bit of a long time for continuous pulses, the tag will be insufficiently charged and communication will fail. SUMMARY

[0003] Therefore, the embodiments of the present application aim to provide an information transmission method, device, equipment and storage medium.

[0004] The technical solutions of the embodiments of the present application are implemented as follows:

[0005] The embodiments of the present application provide an information transmission method, for a sending end, the method comprising:

[0006] generating a clock division signal based on a clock auxiliary signal and an encoded original binary information sequence;

[0007] generating an output signal based on the clock division signal and an amplitude shift keying (ASK) signal, and sending the output signal to a receiving end;

[0008] The period of the clock auxiliary signal is a fractional division of a reference time interval corresponding to the encoding operation.

[0009] In the embodiments of the present application, before the clock division signal is generated based on the clock auxiliary signal and the encoded original binary information sequence, the method further comprises:

[0010] performing RFID forward link encoding on the original binary information sequence to be sent to obtain the encoded original binary information sequence;

[0011] generating a self-correlated clock auxiliary signal based on a local oscillator circuit or a clock division circuit;

[0012] The RFID forward link encoding mode comprises one or more of the following:

[0013] pulse interval encoding (PIE);

[0014] Manchester coding;

[0015] Miller coding;

[0016] differential bi-phase coding;

[0017] biphase mark coding (FM0).

[0018] In the embodiment of the present application, the clock auxiliary signal and the encoded original binary information sequence are used to generate the clock division signal, and the method comprises the following steps of:

[0019] The clock auxiliary signal and the encoded original binary information sequence are subjected to XOR processing to obtain the clock division signal.

[0020] In the embodiment of the present application, the clock division signal and the ASK signal are used to generate the output signal, and the method comprises the following steps of:

[0021] The clock division signal and the ASK signal are subjected to multiplication processing to obtain the output signal in the form of on-off keying (OOK) signal.

[0022] In the embodiment of the present application, the method further comprises the following steps of:

[0023] A broadcast message is sent, and the broadcast message is used to adjust the period of the clock division signal of the RFID forward link by the receiving end based on the broadcast message; wherein,

[0024] The broadcast message carries one or more of the following parameters:

[0025] pulse interval factor (PIF);

[0026] modulation bandwidth (BW);

[0027] coding rate (CR);

[0028] data rate (DR);

[0029] symbol period (Ts).

[0030] The embodiment of the present application also provides an information transmission method applied to a receiving end, and the method comprises the following steps of:

[0031] A clock division signal is determined based on the period of the extracted clock auxiliary signal; wherein, the period of the clock division signal is the same as the period of the clock auxiliary signal, and the period of the clock auxiliary signal is a fractional frequency division of a reference time interval corresponding to an encoding operation of an original binary information sequence by a sending end;

[0032] An original binary information sequence is obtained based on the received output signal sent by the sending end and the clock division signal.

[0033] In the embodiment of the present application, before the clock division signal is determined based on the period of the extracted clock auxiliary signal, the method further comprises:

[0034] The clock auxiliary signal is extracted from the RFID forward link coded pulse signal based on a coding mode of RFID forward link.

[0035] In the embodiment of the present application, the clock division signal is determined based on the period of the extracted clock auxiliary signal, comprising:

[0036] The clock division signal in a multiple of the period of the pulse clock signal of the RFID forward link is obtained based on the period of the clock auxiliary signal and a local clock division circuit of the receiving end.

[0037] In the embodiment of the present application, the original binary information sequence is obtained based on the output signal sent by the sending end and the clock division signal, comprising:

[0038] The original binary information sequence is obtained by performing XOR operation on the clock division signal and the output signal sent by the sending end.

[0039] In the embodiment of the present application, the method further comprises:

[0040] Receiving a broadcast message;

[0041] Adjusting the period of the clock division signal of the RFID forward link based on the broadcast message;

[0042] Wherein,

[0043] The broadcast message carries one or more of the following parameters:

[0044] Pulse interval factor PIF;

[0045] Modulation bandwidth BW;

[0046] Coding rate CR;

[0047] Data rate DR;

[0048] Symbol period Ts.

[0049] The embodiment of the present application further provides an information transmission device, comprising: a first communication interface and a first processor; wherein,

[0050] The first processor is configured to generate a clock division signal based on a clock auxiliary signal and an encoded original binary information sequence, and generate an output signal based on the clock division signal and an amplitude shift keying ASK signal;

[0051] The first communication interface is configured to send the output signal to a receiving end;

[0052] The period of the clock auxiliary signal is a fraction of the reference time interval corresponding to the encoding operation of the operation.

[0053] The embodiment of the present application also provides an information transmission device, comprising a second communication interface and a second processor, wherein,

[0054] The second processor is configured to determine a clock division signal based on the period of the extracted clock auxiliary signal, wherein the period of the clock division signal is the same as the period of the clock auxiliary signal, the period of the clock auxiliary signal is a fraction of the reference time interval corresponding to the encoding operation of the original binary information sequence performed by the sending end, and the original binary information sequence is obtained based on the output signal sent by the sending end and the clock division signal.

[0055] The second communication interface is configured to receive the output signal sent by the sending end.

[0056] The embodiment of the present application also provides an information transmission device, comprising a first processor and a first memory for storing a computer program capable of running on the processor,

[0057] When the first processor runs the computer program, the steps of the above method are executed.

[0058] The embodiment of the present application also provides an information transmission device, comprising a second processor and a second memory for storing a computer program capable of running on the processor,

[0059] When the second processor runs the computer program, the steps of the above method are executed.

[0060] The embodiment of the present application also provides a storage medium, which stores a computer program, and the computer program is executed by a processor to implement the steps of the above method.

[0061] The information transmission method, device, equipment and storage medium provided by the embodiment of the present application, the sending end generates a clock division signal based on a clock auxiliary signal and an encoded original binary information sequence; generates an output signal based on the clock division signal and an amplitude shift keying (ASK) signal, and sends the output signal to the receiving end; wherein the period of the clock auxiliary signal is a fractional division of a reference time interval corresponding to the encoding operation; the receiving end determines a clock division signal based on the period of the extracted clock auxiliary signal; wherein the period of the clock division signal is the same as the period of the clock auxiliary signal, and the period of the clock auxiliary signal is a fractional division of a reference time interval corresponding to the encoding operation of the original binary information sequence by the sending end; and the original binary information sequence is obtained based on the received output signal sent by the sending end and the clock division signal. The embodiment of the present application can avoid the problem that too many consecutive logic 0 character bits in the original binary information sequence cause insufficient charging of the passive tag, and ensure effective communication. BRIEF DESCRIPTION OF DRAWINGS

[0062] Figure 1 The information transmission method flowchart of the embodiment of the present application Figure 1 ;

[0063] Figure 2 The schematic diagram of different signals processed by the sending end of the embodiment of the present application

[0064] Figure 3 The information transmission method flowchart of the embodiment of the present application Figure 2 ;

[0065] Figure 4 The structure schematic diagram of the tag as the receiving end of the embodiment of the present application

[0066] Figure 5 The schematic diagram of different signals processed by the receiving end of the embodiment of the present application

[0067] Figure 6 The information transmission device structure schematic diagram of the embodiment of the present application Figure 1 ;

[0068] Figure 7 The information transmission device structure schematic diagram of the embodiment of the present application Figure 2 ;

[0069] Figure 8 The information transmission equipment structure schematic diagram of the embodiment of the present application Figure 1 ;

[0070] Figure 9 The information transmission equipment structure schematic diagram of the embodiment of the present application Figure 2 . DETAILED DESCRIPTION

[0071] The present application will be described below in conjunction with the accompanying drawings and embodiments. It can be understood that the specific embodiments described herein are only used to explain the related application, and not to limit the application. In addition, it should be noted that only the parts related to the application are shown in the drawings for ease of description. It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict. The present application will be described in detail below with reference to the accompanying drawings and embodiments.

[0072] It can be known that the encoding method commonly used by the RFID system can include one or more of the following: inverse non-return to zero (NRZ) encoding, Manchester encoding, unipolar return to zero (RZ) encoding, differential bi-phase (DBP) encoding, Miller encoding and differential encoding, PIE encoding, FM0 encoding. The passive tag usually supports a relatively simple low-order modulation method: amplitude shift keying (ASK) modulation, binary phase shift keying (BPSK) modulation.

[0073] There is no solution in the current industry for the passive tag forward link encoding waveform correction and performance optimization based on the flexible adjustment of the pulse interval period for the downlink of the separated RFID system. Therefore, the embodiments of the present application propose a low-power modulation scheme combining OOK coherent detection based on improved pulse code stream and pulse clock division signal processing based on pulse interval period modulation, so as to avoid the problem of insufficient charging of the passive tag caused by too many consecutive logic 0 character bits in the original binary information sequence, and also to improve the anti-interference ability of the relay link.

[0074] The embodiments of the present application provide an information transmission method, which is applied to a sending end, as shown in the figure, comprising: Figure 1 As shown in the figure, comprising:

[0075] Step 101: generating a clock division signal based on a clock auxiliary signal and an encoded original binary information sequence;

[0076] Step 102: generating an output signal based on the clock division signal and an amplitude shift keying (ASK) signal, and sending to a receiving end;

[0077] The period of the clock auxiliary signal is a fractional division of the reference time interval corresponding to the encoding operation.

[0078] In the embodiments of the present application, the sending end can include a base station, a passive transceiver device, etc.; the receiving end can include a (passive) tag, and other applications with passive tag characteristics, such as asset inventory, article search, etc. The reference time interval is the time interval represented by "Tari", which will be described later.

[0079] In one embodiment, the system implementing the information transmission method described in the present application can adopt a split forward link architecture, and deploy the forward and reverse links in the receiver (reader / writer) and the exciter respectively, so as to decouple the links, improve the spatial isolation of the transmitted and received signals, improve the receiving sensitivity of the receiver to the reflected signals of the tags, and greatly expand the coverage range of the RFID system. The synchronization and control interaction between the receiver (reader / writer) and the exciter is carried through the management plane based on general wireless technology. The first case is that the reader / writer and the cellular gateway are physically coupled, and the reader / writer directly communicates with the base station through the 5G cellular air interface; the second case is that the reader / writer and the cellular gateway are separated, and communicate with each other through the 5G cellular air interface or other short-range communication methods. The reader / writers interact based on the neighbor discovery relationship of the networking topology (hierarchical and domain-based), and can realize the centralized scheduling of the base station according to the judgment order. The excitation link between the exciter and the tag realizes the simultaneous transmission of power and data to the tag.

[0080] In the embodiment of the present application, before the clock auxiliary signal and the encoded original binary information sequence are used to generate the clock division signal, the method further comprises:

[0081] The original binary information sequence to be transmitted is subjected to RFID forward link encoding to obtain the encoded original binary information sequence.

[0082] The self-correlated clock auxiliary signal is generated based on the local oscillator circuit or the clock division circuit.

[0083] The RFID forward link encoding method includes one or more of the following:

[0084] Pulse interval encoding (PIE);

[0085] Manchester encoding;

[0086] Miller encoding;

[0087] Differential bidirectional encoding;

[0088] FM0 (space between two-phase encoding).

[0089] The RFID forward link encoding method is an encoding method that is easy for the tag to extract the clock. As shown in the formula, the input signal is the original binary information sequence, and the pulse clock signal is the clock auxiliary signal. Figure 2

[0090] ​In the embodiments of the present application, a self-correlated clock auxiliary signal can be generated by a local oscillator circuit or a clock frequency division circuit according to a pulse oscillation period of a continuous wave (CW) pulse clock signal; wherein the period of the clock auxiliary signal is a fractional frequency division of a reference time interval (Tari) of pulse encoding (RFID forward link encoding). For example, the reference time interval of PIE encoding is the time width of adjacent two pulse falling edges, and the duration is 25μs. (Pulse Interval Factor, PIF) is the pulse interval factor, and the value is an integer between 1 and 5. Then the period T of the clock auxiliary signal is:

[0091] PIF = 1, 2, 3, 4, 5

[0092] It can be known that the forward link of the reader sending instructions to the tag in the RFID system generally adopts PIE pulse encoding or improved pulse encoding mode, and the feature is to set a fixed time length low voltage signal PW, and the length of the PW sending time interval represents information 0 and 1 respectively. PIE is pulse width encoding, and different time widths between pulse falling edges are set to represent data. The RFID reader generates two falling edges to determine the interval of the pulse, and the interval change is a function of binary 0 and 1. The data frame sent by the reader to the tag is composed of SOF (start of frame signal), EOF (end of frame signal), data 0 and 1. The time interval of Tari in the above formula is also called reference time interval, and the time interval is the time width of adjacent two pulse falling edges, and the duration is 25μs.

[0093] In the embodiments of the present application, the clock auxiliary signal and the encoded original binary information sequence are used to generate a clock frequency division signal, which includes:

[0094] The encoded original binary information sequence and the clock auxiliary signal are subjected to XOR processing to obtain the clock frequency division signal.

[0095] Here, the clock frequency division signal no longer appears consecutive logic '0' character bits compared with the original binary information sequence.

[0096] In the embodiments of the present application, the clock frequency division signal and the ASK signal are used to generate an output signal, which includes:

[0097] The clock frequency division signal and the ASK signal are subjected to multiplication processing to obtain an output signal in the form of on-off keying (OOK) signal.

[0098] The ASK signal is an excitation signal sent by a passive exciter of a sending end.

[0099] In the embodiments of the present application, the method further comprises:

[0100] sending a broadcast message, for the receiving end to adjust the period of the clock division signal of the RFID forward link based on the broadcast message; wherein,

[0101] the broadcast message carries one or more of the following parameters:

[0102] a pulse interval factor PIF;

[0103] a modulation bandwidth BW;

[0104] a coding rate CR;

[0105] a data rate DR;

[0106] a symbol period Ts.

[0107] In the embodiments of the present application, the data rate of the output signal sent to the receiving end is:

[0108]

[0109] In addition,

[0110]

[0111] wherein BW is the bandwidth and CR is the coding rate. The pulse interval factor (PIF) and the modulation bandwidth (BW) directly affect the downlink reception sensitivity of the passive forward link. In some embodiments, the base station conducts an inventory of the tags deployed in the field through the reader-writer, and according to the read-write success rate of the tags and the number of inventories, the reader-writer filters out some areas with a high number of inventories and initiates a broadcast to these areas. The broadcast message carries pulse interval related parameters, not limited to one or more of the following parameters: pulse interval factor (PIF), modulation bandwidth (BW), coding rate (CR), data rate (DR), symbol period (Ts), etc. The tags in these areas need to adjust the period of the clock auxiliary signal of the passive tag forward link according to the pulse interval factor (PIF) and other related parameters indicated in the broadcast message, so as to adjust the downlink reception sensitivity of the passive tag. For areas with a high number of inventories, it is because the environment in these areas is poor and signal backscattering is difficult. Therefore, for these areas, after sending the broadcast message, the scheme of the present application (adjusting the period of the clock division signal of the RFID forward link) is used to conduct an inventory again.

[0112] In some embodiments, the terminal at the edge of the Gateway coverage range should use a high PIF, and the terminal close to the Gateway should use a low PIF. The working mode of the pulse interval can be pre-set and known to the receiving end. In addition, the clock division signal can adjust its high-level duty cycle through an integrator or integration circuit.

[0113] It can be seen that the method of the embodiment of the application can avoid the problem of insufficient charging of the passive tag caused by too many consecutive logic 0 character bits in the original binary information sequence, and ensure the charging efficiency of a stable duty cycle (50%).

[0114] In addition, according to the read-write success rate and the inventory times of the tag, the embodiment of the application screens out an area with abnormal inventory times, improves the anti-noise capability of the passive forward link by improving the encoding mode of the forward link, adjusts the period of the clock auxiliary signal of the passive tag forward link according to the pulse interval factor (PIF) and other related parameters carried by the broadcast message, thereby reducing the decision threshold error probability, and optimizing the effective bit rate, anti-interference and noise capability of the passive forward link encoding.

[0115] The embodiment of the application also provides an information transmission method, as shown in Figure 3 the method is applied to a receiving end, and the method comprises the following steps:

[0116] Step 301: determining a clock division signal based on the period of the extracted clock auxiliary signal; wherein the period of the clock division signal is the same as the period of the clock auxiliary signal, and the period of the clock auxiliary signal is a fractional division of a reference time interval corresponding to an encoding operation of the original binary information sequence performed by the sending end.

[0117] Step 302: obtaining the original binary information sequence based on the received output signal sent by the sending end and the clock division signal.

[0118] In actual application, as shown in Figure 4 the embodiment of the application can add a pulse clock acquisition circuit (for extracting the clock auxiliary signal) and a clock division circuit (for determining the clock division signal based on the period of the extracted clock auxiliary signal) in the original tag receiving channel. In the embodiment of the application, the output signal (equivalent to the input signal of the receiving end, as shown in Figure 4 ) sent from the sending end can be forwarded by the existing sample and hold circuit in the tag, and converted into a discrete signal; the discrete signal voltage is compared with a reference voltage (Vref), and a binary signal is reconstructed for subsequent signal processing. This part of the content is prior art, and will not be described in detail here. Figure 5

[0119] In the embodiment of the application, before the clock division signal is determined based on the period of the extracted clock auxiliary signal, the method further comprises the following steps:

[0120] The clock auxiliary signal is extracted from the RFID forward link encoding pulse signal in the encoding mode of the RFID forward link. The clock auxiliary signal is as shown in Figure 5 .​

[0121] In the embodiment of the present application, the clock division signal is determined based on the period of the extracted clock auxiliary signal, comprising:

[0122] The clock division signal is obtained based on the period of the clock auxiliary signal and the clock division circuit of the local clock of the receiving end, and has a multiple relationship with the period of the pulse clock signal of the RFID forward link.

[0123] In the embodiment of the present application, the clock division signal having a multiple relationship with the period of the pulse clock signal of the RFID forward link can be obtained based on the pulse oscillation period of the CW pulse clock signal through the clock division circuit of the local clock of the tag. The period of the pulse clock signal of the RFID forward link is the reference time interval, and the clock division signal is as shown in the following figure. Figure 5

[0124] In the embodiment of the present application, the original binary information sequence is obtained based on the received output signal sent by the sending end and the clock division signal, comprising:

[0125] The clock division signal and the output signal sent by the sending end are subjected to XOR processing to obtain the original binary information sequence.

[0126] In the embodiment of the present application, the passive tag as the receiving end uses the PIE pulse clock division signal to perform XOR processing with the received input signal to obtain the processed output signal, as shown in the following figure, that is, the original binary information sequence is recovered / reproduced. Figure 5

[0127] In the embodiment of the present application, the method further comprises:

[0128] Receiving a broadcast message;

[0129] Adjusting the period of the clock division signal of the RFID forward link based on the broadcast message;

[0130] Among them,

[0131] The broadcast message carries one or more of the following parameters:

[0132] Pulse interval factor PIF;

[0133] Modulation bandwidth BW;

[0134] Coding rate CR;

[0135] Data rate DR;

[0136] Symbol period Ts.

[0137] ​​In the embodiment of the present application, the tag can calculate a pulse interval factor (PIF) according to the relevant parameters carried in the broadcast message, so as to adjust the clock division signal period of the forward link of the passive tag, so that the PIF pulse clock division signal has the same period as the clock assistance signal generated by the passive transceiver (transmitting end). In addition, the clock division signal can adjust the high level duty cycle through an integrator or an integration circuit.

[0138] To implement the method on the transmitting end side of the embodiment of the present application, the embodiment of the present application further provides an information transmission device, as shown in Figure 6

[0139] The first processing unit 601 generates a clock division signal based on the clock assistance signal and the encoded original binary information sequence; and generates an output signal based on the clock division signal and an amplitude shift keying (ASK) signal;

[0140] The first communication unit 602 is configured to send the output signal to the receiving end;

[0141] The period of the clock assistance signal is a fraction of the reference time interval corresponding to the encoding operation.

[0142] In the embodiment of the present application, before the first processing unit 601 generates the clock division signal based on the clock assistance signal and the encoded original binary information sequence, the first processing unit 601 is further configured to

[0143] perform radio frequency identification (RFID) forward link encoding on the original binary information sequence to be sent, to obtain the encoded original binary information sequence;

[0144] generate a self-correlated clock assistance signal based on a local oscillator circuit or a clock division circuit;

[0145] The RFID forward link encoding manner includes one or more of the following:

[0146] pulse interval encoding (PIE);

[0147] Manchester encoding;

[0148] Miller encoding;

[0149] differential bidirectional encoding;

[0150] biphase mark-free encoding (FM0).

[0151] In the embodiment of the present application, the first processing unit 601 generates the clock division signal based on the clock assistance signal and the encoded original binary information sequence, including:

[0152] ​XOR processing the encoded original binary information sequence and the clock auxiliary signal to obtain the clock division signal.

[0153] In the embodiment of the application, the first processing unit 601 generates an output signal based on the clock division signal and an ASK signal, and the generating comprises:

[0154] multiplying the clock division signal and the ASK signal to obtain an output signal in the form of on-off keying (OOK) signal.

[0155] In the embodiment of the application, the first communication unit 602 is further configured to

[0156] transmit a broadcast message, and the broadcast message is used by a receiving end to adjust a period of the clock division signal of an RFID forward link based on the broadcast message; wherein

[0157] The broadcast message carries one or more of the following parameters:

[0158] a pulse interval factor (PIF);

[0159] a modulation bandwidth (BW);

[0160] a coding rate (CR);

[0161] a data rate (DR);

[0162] a symbol period (Ts).

[0163] In actual application, the first communication unit 602 can be implemented by a communication interface in an information transmission device, and the first processing unit 601 can be implemented by a processor in the information transmission device.

[0164] It should be noted that the information transmission device provided in the above embodiment is only taken as an example in communication, and in actual application, the above processing can be completed by different program modules according to needs, that is, the internal structure of the device is divided into different program modules to complete all or part of the above processing. In addition, the device and the method provided in the above embodiment belong to the same concept, and the specific implementation process is shown in the method embodiment, which will not be repeated here.

[0165] In order to implement the method on the receiving end side in the embodiment of the application, the embodiment of the application further provides an information transmission device, as shown in Figure 7 The information transmission device comprises:

[0166] The second processing unit 701 is configured to determine a clock division signal based on a period of the extracted clock auxiliary signal; wherein the clock division signal has the same period as the clock auxiliary signal, and the period of the clock auxiliary signal is a fractional division of a reference time interval corresponding to an encoding operation of the original binary information sequence performed by the sending end; and the original binary information sequence is obtained based on the output signal sent by the sending end and the clock division signal.

[0167] The second communication unit 702 is configured to receive the output signal sent by the sending end.

[0168] In the embodiment of the present application, before the second processing unit 701 determines the clock division signal based on the period of the extracted clock auxiliary signal, the second processing unit 701 is further configured to

[0169] The clock auxiliary signal is extracted from the RFID forward link encoding pulse signal based on a RFID forward link encoding mode.

[0170] In the embodiment of the present application, the second processing unit 701 determines the clock division signal based on the period of the extracted clock auxiliary signal, including:

[0171] The clock division signal having a fractional multiple relationship with the period of the pulse clock signal of the RFID forward link is obtained based on the period of the clock auxiliary signal and a clock division circuit of the receiving end.

[0172] In the embodiment of the present application, the second processing unit 701 obtains the original binary information sequence based on the received output signal sent by the sending end and the clock division signal, including:

[0173] The original binary information sequence is obtained by performing exclusive OR operation on the clock division signal and the output signal sent by the sending end.

[0174] In the embodiment of the present application, the second communication unit 702 is further configured to

[0175] receive a broadcast message;

[0176] adjust the period of the clock division signal of the RFID forward link based on the broadcast message;

[0177] wherein,

[0178] The broadcast message carries one or more of the following parameters:

[0179] a pulse interval factor (PIF);

[0180] a modulation bandwidth (BW);

[0181] a coding rate (CR);

[0182] a data rate (DR);

[0183] A symbol period Ts.

[0184] In actual application, the second communication unit 702 can be implemented by a communication interface in the information transmission device; and the second processing unit 701 can be implemented by a processor in the information transmission device.

[0185] It should be noted that, the information transmission device provided in the above embodiments is used for communication, and the above-mentioned division of the program modules is used for example, and in actual application, the above-mentioned processing can be completed by different program modules according to needs, that is, the internal structure of the device is divided into different program modules to complete all or part of the above-mentioned processing. In addition, the device and the method embodiments provided in the above embodiments belong to the same concept, and the specific implementation process is detailed in the method embodiments, which will not be repeated here.

[0186] Based on the hardware implementation of the above program modules, and in order to realize the method of the sending end side in the embodiments of the present application, the embodiments of the present application further provide an information transmission device, as shown in the following Figure 8 The information transmission device 800 includes:

[0187] A first communication interface 801, which can interact with a terminal and / or other nodes on a network side;

[0188] A first processor 802 connected with the first communication interface 801 to realize information interaction with a terminal and / or other nodes on a network side, and used for running a computer program to execute the method provided in one or more technical solutions of the above-mentioned information transmission device side;

[0189] A first memory 803, in which the computer program is stored.

[0190] Specifically, the first processor 802 is configured to generate a clock division signal based on a clock auxiliary signal and an encoded original binary information sequence; and generate an output signal based on the clock division signal and an amplitude shift keying (ASK) signal.

[0191] The first communication interface 801 is configured to send the output signal to a receiving end.

[0192] The period of the clock auxiliary signal is a fraction of a reference time interval corresponding to the encoding operation.

[0193] In the embodiments of the present application, before the first processor 802 generates a clock division signal based on a clock auxiliary signal and an encoded original binary information sequence, the first processor 802 is further configured to

[0194] The original binary information sequence to be sent is subjected to RFID forward link encoding to obtain an encoded original binary information sequence;

[0195] A self-correlated clock auxiliary signal is generated based on a local oscillator circuit or a clock divider circuit;

[0196] The RFID forward link encoding mode includes one or more of the following:

[0197] Pulse interval encoding (PIE);

[0198] Manchester encoding;

[0199] Miller encoding;

[0200] Differential bi-directional encoding;

[0201] Biphase mark-free encoding (FM0).

[0202] In the embodiments of the present application, the first processor 802 generates a clock divider signal based on the clock auxiliary signal and the encoded original binary information sequence, including:

[0203] The encoded original binary information sequence and the clock auxiliary signal are subjected to XOR processing to obtain the clock divider signal.

[0204] In the embodiments of the present application, the first processor 802 generates an output signal based on the clock divider signal and an ASK signal, including:

[0205] The clock divider signal and the ASK signal are subjected to multiplication processing to obtain an output signal in the form of on-off keying (OOK) signal.

[0206] In the embodiments of the present application, the first communication interface 801 is further configured to

[0207] Send a broadcast message, which is used by a receiving end to adjust the period of the clock divider signal of the RFID forward link based on the broadcast message; wherein

[0208] The broadcast message carries one or more of the following parameters:

[0209] Pulse interval factor (PIF);

[0210] Modulation bandwidth (BW);

[0211] Encoding rate (CR);

[0212] Data rate (DR);

[0213] Symbol period (Ts).

[0214] It should be noted that the specific process of the first communication interface 801 and the first processor 802 can be understood with reference to the above method, which will not be repeated here.

[0215] Of course, in actual application, various components in the information transmission device 800 are coupled together through the bus system 804. It can be understood that the bus system 804 is used to realize the connection communication between the components. The bus system 804 includes not only a data bus, but also a power bus, a control bus and a status signal bus. However, in order to clearly illustrate, all kinds of buses are marked as the bus system 804. Figure 8

[0216] The first memory 803 in the embodiment of the present application is used to store various types of data to support the operation of the information transmission device 800. Examples of these data include any computer programs used to operate on the information transmission device 800.

[0217] The method disclosed in the above embodiment of the present application can be applied to the first processor 802 or implemented by the first processor 802. The first processor 802 can be an integrated circuit chip with signal processing capability. In the implementation process, each step of the above method can be completed by the integrated logic circuit of hardware or the instruction in the form of software in the first processor 802. The first processor 802 mentioned above can be a general-purpose processor, a digital signal processor (DSP), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. The first processor 802 can implement or execute the methods, steps and logic block diagrams disclosed in the embodiments of the present application. The general-purpose processor can be a microprocessor or any conventional processor, etc. In combination with the steps of the method disclosed in the embodiments of the present application, the hardware decoding processor can be directly embodied to execute the above steps, or the combination of hardware and software modules in the decoding processor can be executed. The software module can be located in the storage medium, which is located in the first memory 803, and the first processor 802 reads the information in the first memory 803 and combines the hardware to complete the steps of the above method.

[0218] ​In an example embodiment, the information transmission device 800 can be implemented by one or more Application Specific Integrated Circuits (ASICs), DSPs, Programmable Logic Devices (PLDs), Complex Programmable Logic Devices (CPLDs), Field-Programmable Gate Arrays (FPGAs), general-purpose processors, controllers, microcontrollers (MCUs), microprocessors (Microprocessors), or other electronic elements for executing the foregoing methods.

[0219] Based on the hardware implementation of the foregoing program modules, and in order to implement the method of the receiving end side of the embodiments of the present application, the embodiments of the present application further provide an information transmission device, as shown in the figure, the information transmission device 900 includes: Figure 9

[0220] A second communication interface 901 capable of information interaction with other nodes on the network side;

[0221] A second processor 902 connected with the second communication interface 901 to realize information interaction with other nodes on the network side, for running a computer program, executing the method provided by one or more technical solutions of the foregoing receiving end side;

[0222] A second memory 903, the computer program is stored on the second memory 903.

[0223] Specifically, the second processor 902 is configured to determine a clock division signal based on the period of the extracted clock auxiliary signal; wherein the period of the clock division signal is the same as the period of the clock auxiliary signal, and the period of the clock auxiliary signal is a fractional division of a reference time interval corresponding to an encoding operation of the original binary information sequence by the sending end; and obtain the original binary information sequence based on the output signal sent by the sending end and the clock division signal.

[0224] The second communication interface 901 is configured to receive the output signal sent by the sending end.

[0225] Wherein, the period of the clock auxiliary signal is a fractional division of a reference time interval corresponding to the encoding operation.

[0226] In the embodiments of the present application, before the second processor 902 determines the clock division signal based on the period of the extracted clock auxiliary signal, the second processor 902 is further configured to ​

[0227] extracting a clock auxiliary signal from the RFID forward link coded pulse signal based on a coding mode of a radio frequency identification (RFID) forward link.

[0228] In the embodiments of the present application, the second processor 902 determines a clock division signal based on a period of the extracted clock auxiliary signal, comprising:

[0229] obtaining a clock division signal in a multiple of the period of the pulse clock signal of the RFID forward link based on the period of the clock auxiliary signal and a clock division circuit of a local clock of a receiving end.

[0230] In the embodiments of the present application, the second processor 902 obtains an original binary information sequence based on the received output signal sent by the sending end and the clock division signal, comprising:

[0231] performing exclusive-OR operation on the clock division signal and the output signal sent by the sending end to obtain the original binary information sequence.

[0232] In the embodiments of the present application, the second communication interface 901 is further configured to

[0233] receive a broadcast message;

[0234] adjust the period of the clock division signal of the RFID forward link based on the broadcast message;

[0235] wherein,

[0236] the broadcast message carries one or more of the following parameters:

[0237] a pulse interval factor (PIF);

[0238] a modulation bandwidth (BW);

[0239] a code rate (CR);

[0240] a data rate (DR);

[0241] a symbol period (Ts).

[0242] It should be noted that the specific processing procedures of the second communication interface 901 and the second processor 902 can be understood with reference to the above method, which will not be described here.

[0243] Of course, in actual application, various components in the information transmission device 900 are coupled together through a bus system 904. It can be understood that the bus system 904 is used to realize the connection and communication between the components. In addition to the data bus, the bus system 904 also includes a power bus, a control bus and a status signal bus. However, for the purpose of clear illustration, all kinds of buses are marked as the bus system 904 in the Figure 9 .

[0244] The second memory 903 in the embodiments of the present application is configured to store various types of data to support the operation of the information transmission device 900. Examples of the data include any computer programs used for operating the information transmission device 900.

[0245] The method disclosed in the embodiments of the present application can be applied to or implemented by the second processor 902. The second processor 902 can be an integrated circuit chip with processing capability of signals. In the implementation process, each step of the above method can be completed by the integrated logic circuit or the instruction in the form of software of the second processor 902. The second processor 902 can be a general processor, a digital signal processor (DSP), or other programmable logic device, discrete gate or transistor logic device, discrete hardware component, etc. The second processor 902 can implement or execute the disclosed methods, steps and logic block diagrams in the embodiments of the present application. The general processor can be a microprocessor or any conventional processor, etc. In combination with the steps of the method disclosed in the embodiments of the present application, the hardware decoding processor can be directly embodied to execute the steps of the method, or the hardware and software modules in the decoding processor can be combined to execute the steps of the method. The software module can be located in the storage medium, which is located in the second memory 903. The second processor 902 reads the information in the second memory 903 and combines the hardware to complete the steps of the method.

[0246] In the exemplary embodiments, the information transmission device 900 can be implemented by one or more application specific integrated circuits (ASICs), DSPs, programmable logic devices (PLDs), complex programmable logic devices (CPLDs), field programmable gate arrays (FPGAs), general-purpose processors, controllers, micro controllers (MCUs), microprocessors (Microprocessors), or other electronic elements, to execute the above method.

[0247] In the example embodiment, the embodiments of the present application also provide a storage medium, i.e., a computer storage medium, specifically a computer readable storage medium, such as a first memory 803 storing a computer program executable by the first processor 802 of the information transmission device 800 to perform the steps of the aforementioned sending side method. For another example, a second memory 903 storing a computer program executable by the second processor 902 of the information transmission device 900 to perform the steps of the aforementioned receiving side method. The computer readable storage medium can be a memory such as FRAM, ROM, PROM, EPROM, EEPROM, Flash Memory, magnetic surface memory, optical disc, or CD-ROM.

[0248] It should be noted that "first", "second", and the like are used to distinguish similar objects, and do not necessarily have to be used to describe a specific order or sequence.

[0249] In addition, the technical solutions described in the embodiments of the present application can be combined arbitrarily without conflict.

[0250] The above is only a preferred embodiment of the present application, and is not used to limit the protection scope of the present application.

Claims

1. A method of information transmission, characterized in that, The method applied to a sending end comprises: generating a clock division signal based on a clock auxiliary signal and an encoded original binary information sequence; generating an output signal based on the clock division signal and an amplitude shift keying (ASK) signal and sending the output signal to a receiving end; wherein a period of the clock auxiliary signal is a fractional division of a reference time interval corresponding to an encoding operation.

2. The method of claim 1, wherein, Before the step of generating the clock division signal based on the clock auxiliary signal and the encoded original binary information sequence, the method further comprises: performing radio frequency identification (RFID) forward link encoding on the original binary information sequence to be sent to obtain the encoded original binary information sequence; generating a self-correlated clock auxiliary signal based on a local oscillator circuit or a clock division circuit; wherein the RFID forward link encoding mode comprises one or more of the following: pulse interval encoding (PIE); Manchester encoding; Miller encoding; differential bi-directional encoding; bi-phase space mark encoding (FM0).

3. The method of claim 1, wherein, The step of generating the clock division signal based on the clock auxiliary signal and the encoded original binary information sequence comprises: performing exclusive OR processing on the encoded original binary information sequence and the clock auxiliary signal to obtain the clock division signal.

4. The method of claim 1, wherein, The step of generating the output signal based on the clock division signal and the ASK signal comprises: performing multiplication processing on the clock division signal and the ASK signal to obtain an on-off keying (OOK) signal form output signal.

5. The method of claim 1, wherein, The method further comprises: sending a broadcast message for the receiving end to adjust a period of the clock division signal of the RFID forward link based on the broadcast message; wherein the broadcast message carries one or more of the following parameters: a pulse interval factor (PIF); a modulation bandwidth (BW); a coding rate (CR); a data rate (DR); a symbol period (Ts).

6. An information transmission method characterized by comprising: The method applied to a receiving end comprises: determining a clock division signal based on a period of an extracted clock auxiliary signal; wherein the period of the clock division signal is the same as that of the clock auxiliary signal, and the period of the clock auxiliary signal is a fractional division of a reference time interval corresponding to an encoding operation performed by a sending end on an original binary information sequence; obtaining the original binary information sequence based on a received output signal sent by the sending end and the clock division signal.

7. The method of claim 6, wherein, Before the step of determining the clock division signal based on the period of the extracted clock auxiliary signal, the method further comprises: extracting the clock auxiliary signal from an RFID forward link encoding pulse signal based on an RFID forward link encoding mode.

8. The method of claim 6, wherein, The step of determining the clock division signal based on the period of the extracted clock auxiliary signal comprises: obtaining a clock division signal in a fractional multiple relationship with a pulse clock signal period of the RFID forward link based on the period of the clock auxiliary signal and a clock division circuit local to the receiving end.

9. The method of claim 6, wherein, The step of obtaining the original binary information sequence based on the received output signal sent by the sending end and the clock division signal comprises: performing exclusive OR processing on the clock division signal and the output signal sent by the sending end to obtain the original binary information sequence.

10. The method of claim 6, wherein, The method further comprises: receiving a broadcast message; adjusting a period of a clock division signal of an RFID forward link based on the broadcast message; wherein, the broadcast message carries one or more of the following parameters: a pulse interval factor (PIF); a modulation bandwidth (BW); a code rate (CR); a data rate (DR); a symbol period (Ts).

11. An information transmission apparatus, characterized by comprising: comprising: a first communication interface and a first processor; wherein, the first processor is configured to generate a clock division signal based on a clock assistance signal and an encoded original binary information sequence, and generate an output signal based on the clock division signal and an amplitude shift keying (ASK) signal; the first communication interface is configured to transmit the output signal to a receiving end; wherein, a period of the clock assistance signal is a fraction of a reference time interval corresponding to an encoding operation of the transmitting end.

12. An information transmission apparatus, characterized by comprising: comprising: a second communication interface and a second processor; wherein, the second processor is configured to determine a clock division signal based on a period of an extracted clock assistance signal, wherein the period of the clock division signal is the same as the period of the clock assistance signal, and the period of the clock assistance signal is a fraction of a reference time interval corresponding to an encoding operation of an original binary information sequence by the transmitting end, and to obtain the original binary information sequence based on an output signal transmitted by the transmitting end and the clock division signal; the second communication interface is configured to receive the output signal transmitted by the transmitting end.

13. An information transmission apparatus, characterized by comprising: comprising: a first processor and a first memory for storing a computer program capable of running on the processor, wherein, when the first processor runs the computer program, it performs the steps of the method of any one of claims 1 to 5.

14. An information transmission apparatus, characterized by comprising: comprising: a second processor and a second memory for storing a computer program capable of running on the processor, wherein, when the second processor runs the computer program, it performs the steps of the method of any one of claims 6 to 10.

15. A storage medium having stored thereon a computer program, characterized in that the computer program, when executed by a processor, implements the steps of the method of any one of claims 1 to 5, or implements the steps of the method of any one of claims 6 to 10.

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