A wireless access method and system based on ZETA technology

Abstract

The present application provides a wireless access method and system based on ZETA technology, the method comprising: detecting whether there is a matching record in a preset memory, and if there is a matching record, determining a connection frequency according to the matching record; if there is no matching record, determining a scanning frequency band according to the type of the slave, the type of the slave including a sensor type and a non-sensor type, and performing signal detection according to the scanning frequency band and a preset scanning rule to determine the connection frequency; sending registration information according to the determined connection frequency, and then establishing a wireless connection between the host corresponding to the connection frequency, wherein the slave and the host perform two-way communication based on the ZETA technology to realize automatic wireless connection of the slave to the host, thereby improving the efficiency of wireless access.

Description

Technical Field

[0001] The present application relates to the field of wireless communication technology for the Internet of Things, and in particular to a wireless access method and system based on ZETA technology. Background Art

[0002] ZETA is a UNB low-power wide area network (LPWAN) technology protocol standard with the characteristics of wide coverage, low service cost, and low energy consumption. It meets the connection requirements of low frequency of data exchange, low connection cost, and application in complex environments in the IoT environment. It can be widely used in logistics, industry, construction, agriculture, smart cities and other scenarios. It has a leading advantage in the field of similar technical standards. It is the world's first LPWAN communication standard that supports distributed networking and provides algorithm upgrades for embedded terminal intelligence. It is also the first wide-area IoT technology used by operators in developed countries such as Japan and Singapore. In order to solve the three major pain points of "low power consumption, long distance, and diversified scenarios require completely different performance indicators", ZETA has innovated the traditional LPWAN technology, proposed the latest Advanced M-FSK modulation technology, fully borrowed the innovative basic concept SCS in 5G, and optimized the physical layer, so that ZETA's sensitivity can reach -150dBm, supports 120km / h mobile object monitoring, and can adapt according to the different rate requirements of various application scenarios, broadening the application scenarios of LPWAN. As a new generation of LPWAN technology, ZETA launched "LPWAN2.0 Ubiquitous Internet of Things" in 2020, aiming to achieve lower cost, lower power consumption and smarter networks through continuous technological evolution.

[0003] The rapid development of the Internet of Things has put forward higher requirements for communication technology. Traditional wireless communication technologies (such as Bluetooth, ZigBee and LoRa, mobile cellular networks) can no longer meet the basic needs of the Internet of Everything. Traditional wireless communication technologies, such as Bluetooth and ZigBee, have poor penetration capabilities. Mobile cellular networks require traffic fees and are costly. LoRa is an American technology. In the LoRa industry chain, chips are only produced or authorized by Semtech in the United States, and there are potential application risks. In a wireless network system, when a LoRa slave accesses a host, the corresponding frequency and related registration information must be manually set. This wireless access method is very troublesome when restoring factory settings and replacing slave devices. Therefore, an automatic wireless access method is needed to enable the slave device to automatically access the working frequency of the host and register. Summary of the invention

[0004] In response to the above technical problems, the present application provides a wireless access method and system based on ZETA technology to achieve automatic wireless connection of a slave to a host and improve the efficiency of wireless access.

[0005] In a first aspect, the present application provides a wireless access method based on ZETA technology, including:

[0006] Detecting whether there is a matching record in a preset memory, and if there is a matching record, determining the connection frequency according to the matching record;

[0007] If there is no matching record, determining the scanning frequency band according to the type of the slave, the type of the slave including sensor type and non-sensor type, and performing signal detection according to the scanning frequency band and a preset scanning rule to determine the connection frequency;

[0008] According to the determined connection frequency, registration information is sent, thereby establishing a wireless connection between the host corresponding to the connection frequency, wherein the slave and the host perform two-way communication based on ZETA technology.

[0009] The embodiment of the present application provides a wireless access method based on ZETA technology, with the slave end as the execution subject, first reading the matching information in the memory to confirm whether there is a matching record, if there is a matching record, the connection frequency can be directly determined according to the matching record, and the subsequent registration process can be performed according to the connection frequency; if there is no matching record, the signal detection is performed according to the scanning frequency band and the preset scanning rules, the working frequency of the host is automatically detected, and then the connection frequency of the slave is confirmed, and the automatic detection of the frequency during the access process is realized, avoiding the manual setting of the corresponding frequency, and improving the user experience. Further, since ZETA technology has the characteristics of uplink and downlink bidirectional communication, it can be used for sensor data collection and reporting, and can also perform downlink configuration and query and control operations. Therefore, the two-way communication between the slave and the host is realized through ZETA technology, so that the registration process is automatically completed, and the automatic wireless connection of the slave to the host is realized, and the efficiency of wireless access is improved. At the same time, ZETA technology also has the characteristics of ultra-narrowband communication, low power consumption, wide coverage and anti-interference, which can further reduce the deployment cost of the host and the slave, and improve the stability during the wireless connection process.

[0010] Further, determining the scanning frequency band according to the type of the slave includes:

[0011] If the type of the slave is a sensor, the scanning frequency band is a first preset frequency band;

[0012] If the type of the slave is non-sensor type, the scanning frequency band is the second preset frequency band;

[0013] Wherein, the first preset frequency band and the second preset frequency band are both within the operating frequency range of the ZETA technology.

[0014] In a possible implementation, performing signal detection according to the scanning frequency band and a preset scanning rule to determine the connection frequency includes:

[0015] Dividing the scanning frequency band into a plurality of detection frequencies according to the scanning frequency band and a preset frequency interval;

[0016] Sending detection signals corresponding to each of the detection frequencies respectively;

[0017] After each detection signal is sent, whether a response signal is received within a preset time period is detected, and if a response signal is received, the signal strength of the response signal and the corresponding detection frequency are saved;

[0018] After all the detection signals corresponding to the detection frequencies have been sent, the response signal with the highest signal strength is selected from the saved response signals as the host's response signal;

[0019] The detection frequency corresponding to the response signal is used as the connection frequency.

[0020] The embodiment of the present application provides a signal detection method, firstly dividing the scanning frequency band into a number of detection frequencies according to the scanning frequency band and the preset frequency interval, wherein the preset frequency interval is related to the channel distribution. When deploying the host, a frequency band is usually first divided into a number of channels at a fixed frequency interval, and the host works in any one of the several channels, so the frequency interval between the several channels is the preset frequency interval. Then, based on the several detection frequencies, a number of corresponding detection signals are sent, and when a response signal is received on a certain detection frequency, it indicates that there is a working host on the detection frequency. Taking into account the situation that there may be multiple hosts within a range, the embodiment of the present application is set to select the nearest host for matching from the machine, that is, the host with the strongest response signal strength, to avoid misconnection and improve the accuracy of automatic wireless access.

[0021] In a possible implementation, sending registration information according to the determined connection frequency, and then establishing a wireless connection between hosts corresponding to the connection frequency, includes:

[0022] Sending a random number based on the connection frequency;

[0023] Calculate the random number according to a preset calculation rule to obtain a first registration value;

[0024] Acquire first response information based on the connection frequency, and decrypt the first response information according to a preset decryption rule to obtain a second registration value;

[0025] confirming whether the first registration value is equal to the second registration value, and if not, terminating the current wireless access;

[0026] If the first registration value is equal to the second registration value, encrypting the registration information based on a preset encryption rule to obtain encrypted registration information, and sending the encrypted registration information based on the connection frequency;

[0027] Acquire second response information based on the connection frequency, decrypt the second response information according to a preset decryption rule, obtain gateway information and save it;

[0028] A wireless connection between hosts corresponding to the connection frequency is established according to the gateway information.

[0029] The embodiment of the present application provides a slave registration method, in which the same operation rules, decryption rules and encryption rules are set in advance on the slave and the host to ensure the information security and connection accuracy during the registration process. Specifically, the slave first sends a random number and operates the random number internally to obtain a first registration value. Any device on the frequency can receive the random number, but only the target host can operate the random number and obtain the same operation result, and encrypt the operation result as the first response information and send it out. The slave can confirm that the host is the target host by decrypting the first response information and comparing the first registration value, and then send the encrypted registration information, and finally save the gateway information sent by the target host, and establish a wireless connection with the corresponding host according to the gateway information. The embodiment of the present application improves the data security during the registration process through a series of encryption, decryption and verification actions during the registration process.

[0030] Furthermore, the wireless access method based on the ZETA technology further includes:

[0031] The host operates at a first operating frequency and a second operating frequency, wherein the first operating frequency is within a first preset frequency band, the second operating frequency is within a second preset frequency band, and a difference between the first operating frequency and the second operating frequency is a preset fixed value;

[0032] During operation, the host continuously detects whether it has received the detection signal, random number, and registration information;

[0033] When the host receives the detection signal, it sends a corresponding response signal;

[0034] When the host receives the random number, it calculates the random number according to a preset calculation rule to obtain a second registration value, encrypts the second registration value according to a preset encryption rule to obtain a first response information, and sends the first response information;

[0035] When the host receives the encrypted registration information, it decrypts the encrypted registration information according to the preset decryption rule, obtains the registration information and saves it, encrypts the gateway information of the host according to the preset encryption rule, obtains the second response information, and sends the second response information.

[0036] The embodiment of the present application uses the host as the execution subject, and further limits the host's actions. First, the host is set to work at the first working frequency and the second working frequency, and the working frequency of the sensor type and the working frequency of the non-sensor type slave are distinguished to avoid signal conflicts, thereby ensuring the stability and controllability of the wireless connection between the host and each slave. Then, a response action is set when the host receives different types of models, realizing the functions of signal detection, identity authentication, encryption registration, etc. of the slave, and improving the efficiency, accuracy and security of automatic wireless access.

[0037] In a second aspect, accordingly, the present application provides a wireless access system based on ZETA technology, including a detection module, a signal detection module and a registration module;

[0038] The detection module is used to detect whether there is a matching record in the preset memory, and if there is a matching record, determine the connection frequency according to the matching record;

[0039] The signal detection module is used to determine the scanning frequency band according to the type of the slave machine if there is no matching record, the type of the slave machine includes sensor type and non-sensor type, and perform signal detection according to the scanning frequency band and preset scanning rules to determine the connection frequency;

[0040] The registration module is used to send registration information according to the determined connection frequency, thereby establishing a wireless connection between the host corresponding to the connection frequency, wherein the slave and the host perform two-way communication based on ZETA technology.

[0041] Further, determining the scanning frequency band according to the type of the slave includes:

[0042] If the type of the slave is a sensor, the scanning frequency band is a first preset frequency band;

[0043] If the type of the slave is non-sensor type, the scanning frequency band is the second preset frequency band;

[0044] Wherein, the first preset frequency band and the second preset frequency band are both within the operating frequency range of the ZETA technology.

[0045] In a possible implementation, the signal detection module includes a scanning frequency band division unit, a detection signal sending unit, a response signal receiving unit, a signal selection unit, and a connection frequency determination unit;

[0046] The scanning frequency band division unit is used to divide the scanning frequency band into a plurality of detection frequencies according to the scanning frequency band and a preset frequency interval;

[0047] The detection signal sending unit is used to send detection signals corresponding to each of the detection frequencies respectively;

[0048] The response signal receiving unit is used to detect whether a response signal is received within a preset time period after each detection signal is sent, and if a response signal is received, save the signal strength of the response signal and the corresponding detection frequency;

[0049] The signal selection unit is used to select the response signal with the highest signal strength from the stored response signals as the host response signal after sending all the detection signals corresponding to the detection frequencies;

[0050] The connection frequency determination unit is used to use the detection frequency corresponding to the response signal as the connection frequency.

[0051] In a possible implementation, the registration module includes a random number sending unit, a calculation unit, a first response information acquisition unit, a confirmation unit, a registration information sending unit, a second response information acquisition unit, and a wireless connection establishment unit;

[0052] Wherein, the random number sending unit is used to send a random number based on the connection frequency;

[0053] The operation unit is used to operate the random number according to a preset operation rule to obtain a first registration value;

[0054] The first response information acquisition unit is used to acquire the first response information based on the connection frequency, and decrypt the first response information according to a preset decryption rule to obtain a second registration value;

[0055] The confirmation unit is used to confirm whether the first registration value is equal to the second registration value, and if not, terminate the current wireless access;

[0056] The registration information sending unit is used to encrypt the registration information based on a preset encryption rule to obtain encrypted registration information if the first registration value is equal to the second registration value, and send the encrypted registration information based on the connection frequency;

[0057] The second response information acquisition unit is used to acquire the second response information based on the connection frequency, and decrypt the second response information according to a preset decryption rule to obtain the gateway information and save it;

[0058] The wireless connection establishing unit is used to establish a wireless connection between hosts corresponding to the connection frequency according to the gateway information.

[0059] Furthermore, the wireless access system based on the ZETA technology further includes:

[0060] The host operates at a first operating frequency and a second operating frequency, wherein the first operating frequency is within a first preset frequency band, the second operating frequency is within a second preset frequency band, and a difference between the first operating frequency and the second operating frequency is a preset fixed value;

[0061] During operation, the host continuously detects whether it has received the detection signal, random number, and registration information;

[0062] When the host receives the detection signal, it sends a corresponding response signal;

[0063] When the host receives the random number, it calculates the random number according to a preset calculation rule to obtain a second registration value, encrypts the second registration value according to a preset encryption rule to obtain a first response information, and sends the first response information;

[0064] When the host receives the encrypted registration information, it decrypts the encrypted registration information according to the preset decryption rule, obtains the registration information and saves it, encrypts the gateway information of the host according to the preset encryption rule, obtains the second response information, and sends the second response information. BRIEF DESCRIPTION OF THE DRAWINGS

[0065] Figure 1 : A flow chart of a wireless access method based on ZETA technology provided in an embodiment of the present application.

[0066] Figure 2 : Schematic diagram of the modulation frequency change of Advanced M-FSK of ZETA physical layer.

[0067] Figure 3 : Schematic diagram of the modulation and mediation performance of Advanced M-FSK of the ZETA physical layer.

[0068] Figure 4 : Schematic diagram of application scenarios of Advanced M-FSK of ZETA physical layer at different rates.

[0069] Figure 5 :A comparison diagram of various LPWAN technologies.

[0070] Figure 6 : A schematic diagram of the slave signal detection process in a wireless access method based on ZETA technology provided in an embodiment of the present application.

[0071] Figure 7 : A schematic diagram of a specific process of registering a slave machine with a host machine in a wireless access method based on ZETA technology provided in an embodiment of the present application.

[0072] Figure 8 : A schematic diagram of the host workflow in a wireless access method based on ZETA technology provided in an embodiment of the present application.

[0073] Fig. 9 : A schematic diagram of the connection structure between the host and each slave in a wireless access method based on ZETA technology provided in an embodiment of the present application.

[0074] Fig.10 : A structural diagram of a wireless access system based on ZETA technology provided in an embodiment of the present application.

[0075] Fig.11 : A structural diagram of a signal detection module of a wireless access system based on ZETA technology provided in an embodiment of the present application.

[0076] Fig.12 : A structural diagram of a registration module of a wireless access system based on ZETA technology provided in an embodiment of the present application. DETAILED DESCRIPTION

[0077] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0078] It should be noted that the step numbers in the text are only for the convenience of explanation of the specific embodiments and do not serve to limit the order in which the steps are executed. In the description of this application, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features.

[0079] Throughout the entire specification, the ZETA technology described in this application has three sets of protocols, which are used to cope with various complex scenarios in the field of Internet of Things technology, including ZETA-P: low latency, support for up to 50Bytes of application layer data transmission, low-power two-way communication, support for remote OTA, and is mainly aimed at local area network scenarios with small business traffic. ZETA-S: time-frequency multiplexing, the utilization rate of network channels is greatly improved, and a single gateway can theoretically support access to approximately 90,000+ devices, low-power two-way communication, support for remote OTA, and is mainly aimed at metropolitan area network scenarios with large business traffic. ZETA-G: The protocol is streamlined and the cost is extremely low. It uses SDR technology and uses multiple algorithms such as orthogonal FSK+TBCC+repetition to improve uplink sensitivity and effectively increase coverage. It is mainly aimed at cost-sensitive scenarios with a large number of connections. Furthermore, the ZETA protocol also has the characteristics of ultra-narrowband communication, two-way communication, low power consumption, wide coverage and anti-interference:

[0080] Ultra-narrowband communication, the ZETA protocol uses ultra-narrowband for communication, and a single channel occupies only 3.8K bandwidth, supports typical communication rates of 100 / 300 / 600bps, and the maximum rate can support up to 200kbps. The bandwidth of the entire system is less than 120kHz at most, occupying very little bandwidth resources, and can be easily applied to the unlicensed spectrum of various countries.

[0081] Two-way communication, ZETA protocol (except ZETA-G), has the characteristics of uplink and downlink two-way communication. It can be used for sensor data collection and reporting, and can also perform downlink configuration, query and control operations.

[0082] Low power consumption. The ZETA protocol is designed for IoT applications that are mainly uplink-oriented, with small data volumes, low reliability requirements, and low real-time requirements. It has implemented a variety of low-power designs such as LDC, ack downlink, time-sharing downlink, deep sleep, and time-slot uplink.

[0083] Wide coverage, the ZETA protocol supports point-to-point communication with a line-of-sight distance of more than 10 kilometers. The use of multi-level intelligent routing further expands the coverage. For the ZETA-G protocol, SDR technology is used, and multiple algorithms such as orthogonal FSK+TBCC+repetition are used to improve uplink sensitivity, which also effectively increases the coverage.

[0084] Anti-interference: The ZETA protocol uses unlicensed spectrum, which has many interference signals. Therefore, frequency hopping and carrier sensing functions are designed to improve anti-interference performance.

[0085] Embodiment 1:

[0086] like Figure 1 As shown, embodiment 1 provides a wireless access method based on ZETA technology, including steps S1-S3:

[0087] Step S1, detecting whether there is a matching record in a preset memory, and if there is a matching record, determining the connection frequency according to the matching record;

[0088] Step S2: if there is no matching record, determining the scanning frequency band according to the type of the slave, the type of the slave including sensor type and non-sensor type, and performing signal detection according to the scanning frequency band and a preset scanning rule to determine the connection frequency;

[0089] Step S3: Send registration information according to the determined connection frequency, thereby establishing a wireless connection between the host corresponding to the connection frequency, wherein the slave and the host perform two-way communication based on ZETA technology.

[0090] The embodiment of the present application provides a wireless access method based on ZETA technology, with the slave end as the execution subject, first reading the matching information in the memory to confirm whether there is a matching record, if there is a matching record, the connection frequency can be directly determined according to the matching record, and the subsequent registration process can be performed according to the connection frequency; if there is no matching record, the signal detection is performed according to the scanning frequency band and the preset scanning rules, the working frequency of the host is automatically detected, and then the connection frequency of the slave is confirmed, and the automatic detection of the frequency during the access process is realized, avoiding the manual setting of the corresponding frequency, and improving the user experience. Further, since ZETA technology has the characteristics of uplink and downlink bidirectional communication, it can be used for sensor data collection and reporting, and can also perform downlink configuration and query and control operations. Therefore, the two-way communication between the slave and the host is realized through ZETA technology, so that the registration process is automatically completed, and the automatic wireless connection of the slave to the host is realized, and the efficiency of wireless access is improved. At the same time, ZETA technology also has the characteristics of ultra-narrowband communication, low power consumption, wide coverage and anti-interference, which can further reduce the deployment cost of the host and the slave, and improve the stability during the wireless connection process.

[0091] In response to the problems of low LPWAN communication rate, difficulty in coverage and monitoring of moving objects in the existing technology, the ZETA physical layer uses the Advanced M-FSK modulation method to enable ZETA to adapt according to the different rate requirements of various application scenarios. At the same time, it can fully draw on the advanced receiver technology of 5G to improve sensitivity and break through the upper limit of the receiving sensitivity of the existing LPWAN technology, thereby providing a new idea for the evolution of the new generation of LPWAN2.0 technology. Among them, the Advanced M-FSK modulation method is specifically as follows: a signal with a time domain of 1 selects a frequency point from M orthogonal frequency points in the frequency domain for modulation and transmission. Each symbol at each frequency point can modulate 3 bits of information. The minimum frequency point interval is 2kHz. In order to maintain the orthogonality of the frequency points, the symbol rate must be less than the minimum frequency point interval, such as Figure 2As shown, the symbol rate is set to 600 Hz. Figure 2 The following insights can be obtained intuitively: (1) The modulation information only changes in phase, and the amplitude modulation information is not used, so the PAPR is zero, maintaining low power consumption characteristics; (2) The transmission power remains unchanged, the bandwidth increases, and the number of modulation bits increases (log2(M)); (3) Each symbol is sent at only one frequency point, which has the characteristics of narrowband communication.

[0092] Advanced M-FSK modulation performance Figure 3 As shown, the following parameters can be improved through modulation:

[0093] 1) Maximize the use of transmission power to ensure that LPWAN communication does not experience instantaneous high power while maximizing power consumption efficiency.

[0094] 2) Improve the sensitivity of the receiver and increase the coverage distance. If the receiver sensitivity is increased by 6dB, that is, 4 times, the coverage distance can be doubled.

[0095] (3) Meeting the specific data monitoring needs of different industries. For example, with the booming development of the logistics industry, IoT technology must not only support the access of a large number of static sensors, but also support the access of a large number of mobile packages, that is, support the access of objects in complex Doppler and multipath wireless environments.

[0096] So as to achieve the following application goals:

[0097] (1) The sensitivity can reach -150dBm, thus increasing the coverage distance several times. Compared with other LPWAN technologies: At the same rate, it has lower sensitivity. At the same sensitivity, it has higher rate. Through field tests, at a data rate of 100bps, the sensitivity can reach -144.7dBm. At a rate of 30bps, the sensitivity can reach -149.2dBm.

[0098] (2) Supports monitoring of moving objects at a speed of 120 km / h, thereby realizing data collection and real-time monitoring of high-speed moving objects and expanding the application of LPWAN technology in logistics flow scenarios.

[0099] In summary, the Advanced M-FSK modulation method of the ZETA physical layer has both the narrowband communication advantages of Sigfox and the scalability of LoRa, and can also use 5G technology to transmit relatively high rates in a smaller bandwidth. Therefore, ZETA breaks through the limitation of LPWAN transmission data being too small, and can support small video monitoring backhaul and a large amount of electromechanical data acquisition and transmission in factories, as well as mobile object monitoring in logistics scenarios. Compared with LPWAN technologies such as LoRa, it has better scalability and can reach speeds close to megabits, greatly expanding the application scenarios of LPWAN. Its technical characteristics at different transmission rates and application scenarios are as follows: Figure 4 The mainstream LPWAN technologies include NB-IoT, Sigfox, LoRa, ZETA, etc., which have certain differences in network support communication methods, speed, bandwidth, coverage, latency and cell capacity. The comparison chart of various LPWAN technologies is shown in Figure 5 shown.

[0100] Furthermore, in step S1, the preset memory is an electrically erasable programmable read only memory (EEPROM) of the slave itself.

[0101] Further, in step S2, determining the scanning frequency band according to the type of the slave includes:

[0102] If the type of the slave is a sensor, the scanning frequency band is a first preset frequency band;

[0103] If the type of the slave is non-sensor type, the scanning frequency band is the second preset frequency band;

[0104] Wherein, the first preset frequency band and the second preset frequency band are both within the operating frequency range of the ZETA technology.

[0105] In a preferred embodiment, the first preset frequency band and the second preset frequency band are set based on the working frequency 117M-1050MHz of the ZETA technology. Specifically, the first preset frequency band is 490MHz-510MHz, and the second preset frequency band is 470MHz-489MHz.

[0106] In a possible implementation, in step S2, performing signal detection according to the scanning frequency band and a preset scanning rule to determine the connection frequency includes:

[0107] Dividing the scanning frequency band into a plurality of detection frequencies according to the scanning frequency band and a preset frequency interval;

[0108] Sending detection signals corresponding to each of the detection frequencies respectively;

[0109] After each detection signal is sent, whether a response signal is received within a preset time period is detected, and if a response signal is received, the signal strength of the response signal and the corresponding detection frequency are saved;

[0110] After all the detection signals corresponding to the detection frequencies have been sent, the response signal with the highest signal strength is selected from the saved response signals as the host's response signal;

[0111] The detection frequency corresponding to the response signal is used as the connection frequency.

[0112] Further, after the connection frequency is determined, the connection frequency is stored in the EEPROM of the slave.

[0113] The embodiment of the present application provides a signal detection method, firstly dividing the scanning frequency band into a number of detection frequencies according to the scanning frequency band and the preset frequency interval, wherein the preset frequency interval is related to the channel distribution. When deploying the host, a frequency band is usually first divided into a number of channels at a fixed frequency interval, and the host works in any one of the several channels, so the frequency interval between the several channels is the preset frequency interval. Then, based on the several detection frequencies, a number of corresponding detection signals are sent, and when a response signal is received on a certain detection frequency, it indicates that there is a working host on the detection frequency. Taking into account the situation that there may be multiple hosts within a range, the embodiment of the present application is set to select the nearest host for matching from the machine, that is, the host with the strongest response signal strength, to avoid misconnection and improve the accuracy of automatic wireless access.

[0114] In a preferred embodiment, the specific flow chart of steps S1-S2 is as follows: Figure 6 shown.

[0115] In a possible implementation, in step S3, sending registration information according to the determined connection frequency, and then establishing a wireless connection between hosts corresponding to the connection frequency, includes:

[0116] Sending a random number based on the connection frequency;

[0117] Calculate the random number according to a preset calculation rule to obtain a first registration value;

[0118] Acquire first response information based on the connection frequency, and decrypt the first response information according to a preset decryption rule to obtain a second registration value;

[0119] confirming whether the first registration value is equal to the second registration value, and if not, terminating the current wireless access;

[0120] If the first registration value is equal to the second registration value, encrypting the registration information based on a preset encryption rule to obtain encrypted registration information, and sending the encrypted registration information based on the connection frequency;

[0121] Acquire second response information based on the connection frequency, decrypt the second response information according to a preset decryption rule, obtain gateway information and save it;

[0122] A wireless connection between hosts corresponding to the connection frequency is established according to the gateway information.

[0123] In a preferred embodiment, the specific flow chart of registering from the host is as follows: Figure 7 shown.

[0124] The embodiment of the present application provides a slave registration method, in which the same operation rules, decryption rules and encryption rules are set in advance on the slave and the host to ensure the information security and connection accuracy during the registration process. Specifically, the slave first sends a random number and operates the random number internally to obtain a first registration value. Any device on the frequency can receive the random number, but only the target host can operate the random number and obtain the same operation result, and encrypt the operation result as the first response information and send it out. The slave can confirm that the host is the target host by decrypting the first response information and comparing the first registration value, and then send the encrypted registration information, and finally save the gateway information sent by the target host, and establish a wireless connection with the corresponding host according to the gateway information. The embodiment of the present application improves the data security during the registration process through a series of encryption, decryption and verification actions during the registration process.

[0125] Furthermore, the wireless access method based on the ZETA technology further includes:

[0126] The host operates at a first operating frequency and a second operating frequency, wherein the first operating frequency is within a first preset frequency band, the second operating frequency is within a second preset frequency band, and a difference between the first operating frequency and the second operating frequency is a preset fixed value;

[0127] During operation, the host continuously detects whether it has received the detection signal, random number, and registration information;

[0128] When the host receives the detection signal, it sends a corresponding response signal;

[0129] When the host receives the random number, it calculates the random number according to a preset calculation rule to obtain a second registration value, encrypts the second registration value according to a preset encryption rule to obtain a first response information, and sends the first response information;

[0130] When the host receives the encrypted registration information, it decrypts the encrypted registration information according to the preset decryption rule, obtains the registration information and saves it, encrypts the gateway information of the host according to the preset encryption rule, obtains the second response information, and sends the second response information.

[0131] In a preferred embodiment, every 100KHz in the 470MHz-510MHz frequency band is divided into a channel. There are 400 channels in total. In order to prevent signal conflicts, the gateway has two channels working at the same time. The first channel is distributed in 200 channels in 470MHz-489MHz, and the second channel is distributed in 490MHz-510MHz. The fixed frequency difference between the first channel and the second channel of the gateway is 20M. The steps performed by the host during the working process are as follows: Figure 8 The slaves include the following devices: light intensity sensor, sound sensor, power consumption sensor (power controller), smoke sensor, door lock actuator, human body sensor, light controller, curtain controller, curtain actuator, air conditioner controller, air conditioner actuator, etc. The connection structure between the host and each slave is as follows: Fig. 9 shown.

[0132] The embodiment of the present application uses the host as the execution subject, and further limits the host's actions. First, the host is set to work at the first working frequency and the second working frequency, and the working frequency of the sensor type and the working frequency of the non-sensor type slave are distinguished to avoid signal conflicts, thereby ensuring the stability and controllability of the wireless connection between the host and each slave. Then, a response action is set when the host receives different types of models, realizing the functions of signal detection, identity authentication, encryption registration, etc. of the slave, and improving the efficiency, accuracy and security of automatic wireless access.

[0133] Embodiment 2:

[0134] like Fig.10 As shown, accordingly, the present application provides a wireless access system based on ZETA technology, including a detection module 10, a signal detection module 20 and a registration module 30;

[0135] The detection module 10 is used to detect whether there is a matching record in the preset memory, and if there is a matching record, determine the connection frequency according to the matching record;

[0136] The signal detection module 20 is used to determine the scanning frequency band according to the type of the slave machine if there is no matching record, the type of the slave machine includes sensor type and non-sensor type, and perform signal detection according to the scanning frequency band and a preset scanning rule to determine the connection frequency;

[0137] The registration module 30 is used to send registration information according to the determined connection frequency, and then establish a wireless connection between the host corresponding to the connection frequency, wherein the slave and the host perform two-way communication based on ZETA technology.

[0138] Further, determining the scanning frequency band according to the type of the slave includes:

[0139] If the type of the slave is a sensor, the scanning frequency band is a first preset frequency band;

[0140] If the type of the slave is non-sensor type, the scanning frequency band is the second preset frequency band;

[0141] Wherein, the first preset frequency band and the second preset frequency band are both within the operating frequency range of the ZETA technology.

[0142] In one possible implementation, Fig.11 As shown, the signal detection module 20 includes a scanning frequency band division unit 201, a detection signal sending unit 202, a response signal receiving unit 203, a signal selection unit 204 and a connection frequency determination unit 205;

[0143] The scanning frequency band division unit 201 is used to divide the scanning frequency band into a plurality of detection frequencies according to the scanning frequency band and a preset frequency interval;

[0144] The detection signal sending unit 202 is used to send detection signals corresponding to each of the detection frequencies respectively;

[0145] The response signal receiving unit 203 is used to detect whether a response signal is received within a preset time period after each detection signal is sent, and if a response signal is received, save the signal strength of the response signal and the corresponding detection frequency;

[0146] The signal selection unit 204 is used to select the response signal with the highest signal strength from the stored response signals as the host response signal after sending all the detection signals corresponding to the detection frequencies;

[0147] The connection frequency determination unit 205 is configured to use the detection frequency corresponding to the response signal as the connection frequency.

[0148] In one possible implementation, Fig.12As shown, the registration module 30 includes a random number sending unit 301, a calculation unit 302, a first response information acquisition unit 303, a confirmation unit 304, a registration information sending unit 305, a second response information acquisition unit 306 and a wireless connection establishment unit 307;

[0149] The random number sending unit 301 is used to send a random number based on the connection frequency;

[0150] The operation unit 302 is used to operate the random number according to a preset operation rule to obtain a first registration value;

[0151] The first response information acquisition unit 303 is used to acquire the first response information based on the connection frequency, and decrypt the first response information according to a preset decryption rule to obtain a second registration value;

[0152] The confirmation unit 304 is used to confirm whether the first registration value is equal to the second registration value, and if not, terminate the current wireless access;

[0153] The registration information sending unit 305 is used to encrypt the registration information based on a preset encryption rule to obtain encrypted registration information if the first registration value is equal to the second registration value, and send the encrypted registration information based on the connection frequency;

[0154] The second response information acquisition unit 306 is used to acquire the second response information based on the connection frequency, and decrypt the second response information according to a preset decryption rule to obtain the gateway information and save it;

[0155] The wireless connection establishing unit 307 is used to establish a wireless connection between hosts corresponding to the connection frequency according to the gateway information.

[0156] Furthermore, the wireless access system based on the ZETA technology further includes:

[0157] The host operates at a first operating frequency and a second operating frequency, wherein the first operating frequency is within a first preset frequency band, the second operating frequency is within a second preset frequency band, and a difference between the first operating frequency and the second operating frequency is a preset fixed value;

[0158] During operation, the host continuously detects whether it has received the detection signal, random number, and registration information;

[0159] When the host receives the detection signal, it sends a corresponding response signal;

[0160] When the host receives the random number, it calculates the random number according to a preset calculation rule to obtain a second registration value, encrypts the second registration value according to a preset encryption rule to obtain a first response information, and sends the first response information;

[0161] When the host receives the encrypted registration information, it decrypts the encrypted registration information according to the preset decryption rule, obtains the registration information and saves it, encrypts the gateway information of the host according to the preset encryption rule, obtains the second response information, and sends the second response information.

[0162] The embodiment of the present application provides a wireless access system based on ZETA technology, with the slave end as the execution subject, first reading the matching information in the memory to confirm whether there is a matching record. If there is a matching record, the connection frequency can be directly determined according to the matching record, and the subsequent registration process can be performed according to the connection frequency; if there is no matching record, the signal detection is performed according to the scanning frequency band and the preset scanning rules, the working frequency of the host is automatically detected, and then the connection frequency of the slave is confirmed, and the automatic detection of the frequency during the access process is realized, avoiding the manual setting of the corresponding frequency, and improving the user experience. Further, since ZETA technology has the characteristics of uplink and downlink bidirectional communication, it can be used for sensor data collection and reporting, and can also perform downlink configuration, query and control operations. Therefore, the two-way communication between the slave and the host is realized through ZETA technology, so that the registration process is automatically completed, and the automatic wireless connection of the slave to the host is realized, and the efficiency of wireless access is improved. At the same time, ZETA technology also has the characteristics of ultra-narrowband communication, low power consumption, wide coverage and anti-interference, which can further reduce the deployment cost of the host and the slave, and improve the stability during the wireless connection process.

[0163] The more detailed working principle and step flow of this embodiment can refer to, but are not limited to, the relevant records of Embodiment 1.

[0164] The specific embodiments described above further describe the purpose, technical solutions and beneficial effects of the present application in detail. It should be understood that the above description is only a specific embodiment of the present application and is not intended to limit the scope of protection of the present application. It is particularly pointed out that for those skilled in the art, any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A wireless access method based on ZETA technology, characterized in that: include: Detecting whether there is a matching record in a preset memory, and if there is a matching record, determining the connection frequency according to the matching record; If there is no matching record, determining the scanning frequency band according to the type of the slave, the type of the slave including sensor type and non-sensor type, and performing signal detection according to the scanning frequency band and a preset scanning rule to determine the connection frequency; Sending registration information according to the determined connection frequency, and then establishing a wireless connection between hosts corresponding to the connection frequency, including: sending a random number based on the connection frequency; calculating the random number according to a preset calculation rule to obtain a first registration value; obtaining a first response information based on the connection frequency, and decrypting the first response information according to a preset decryption rule to obtain a second registration value; confirming whether the first registration value is equal to the second registration value, and if not, terminating the current wireless access; if the first registration value is equal to the second registration value, encrypting the registration information based on a preset encryption rule to obtain encrypted registration information, and sending the encrypted registration information based on the connection frequency; obtaining a second response information based on the connection frequency, and decrypting the second response information according to a preset decryption rule to obtain gateway information and save it; establishing a wireless connection between hosts corresponding to the connection frequency according to the gateway information; Wherein, the slave and the host perform bidirectional communication based on ZETA technology.

2. A wireless access method based on ZETA technology as claimed in claim 1, characterized in that: The step of determining the scanning frequency band according to the type of the slave includes: If the type of the slave is a sensor, the scanning frequency band is a first preset frequency band; If the type of the slave is non-sensor type, the scanning frequency band is the second preset frequency band; Wherein, the first preset frequency band and the second preset frequency band are both within the operating frequency range of the ZETA technology.

3. A wireless access method based on ZETA technology as claimed in claim 1, characterized in that: The performing signal detection according to the scanning frequency band and the preset scanning rule to determine the connection frequency includes: Dividing the scanning frequency band into a plurality of detection frequencies according to the scanning frequency band and a preset frequency interval; Sending detection signals corresponding to each of the detection frequencies respectively; After each detection signal is sent, whether a response signal is received within a preset time period is detected, and if a response signal is received, the signal strength of the response signal and the corresponding detection frequency are saved; After all the detection signals corresponding to the detection frequencies have been sent, the response signal with the highest signal strength is selected from the saved response signals as the host's response signal; The detection frequency corresponding to the response signal is used as the connection frequency.

4. A wireless access method based on ZETA technology as described in any one of claims 1 to 3, characterized in that: Also includes: The host operates at a first operating frequency and a second operating frequency, wherein the first operating frequency is within a first preset frequency band, the second operating frequency is within a second preset frequency band, and a difference between the first operating frequency and the second operating frequency is a preset fixed value; During operation, the host continuously detects whether it has received the detection signal, random number, and registration information; When the host receives the detection signal, it sends a corresponding response signal; When the host receives the random number, it calculates the random number according to a preset calculation rule to obtain a second registration value, encrypts the second registration value according to a preset encryption rule to obtain a first response information, and sends the first response information; When the host receives the encrypted registration information, it decrypts the encrypted registration information according to the preset decryption rule, obtains the registration information and saves it, encrypts the gateway information of the host according to the preset encryption rule, obtains the second response information, and sends the second response information.

5. A wireless access system based on ZETA technology, characterized in that: It includes a detection module, a signal detection module and a registration module; The detection module is used to detect whether there is a matching record in the preset memory, and if there is a matching record, determine the connection frequency according to the matching record; The signal detection module is used to determine the scanning frequency band according to the type of the slave machine if there is no matching record, the type of the slave machine includes sensor type and non-sensor type, and perform signal detection according to the scanning frequency band and preset scanning rules to determine the connection frequency; The registration module is used to send registration information according to the determined connection frequency, thereby establishing a wireless connection between the host corresponding to the connection frequency, wherein the slave and the host perform two-way communication based on ZETA technology; The registration module includes a random number sending unit, an operation unit, a first response information acquisition unit, a confirmation unit, a registration information sending unit, a second response information acquisition unit and a wireless connection establishment unit; wherein the random number sending unit is used to send a random number based on the connection frequency; the operation unit is used to operate the random number according to a preset operation rule to obtain a first registration value; the first response information acquisition unit is used to obtain a first response information based on the connection frequency, and decrypt the first response information according to a preset decryption rule to obtain a second registration value; the confirmation unit is used to confirm whether the first registration value is equal to the second registration value, and if not, terminate the current wireless access; the registration information sending unit is used to encrypt the registration information based on a preset encryption rule to obtain encrypted registration information if the first registration value is equal to the second registration value, and send the encrypted registration information based on the connection frequency; the second response information acquisition unit is used to obtain the second response information based on the connection frequency, and decrypt the second response information according to a preset decryption rule to obtain gateway information and save it; the wireless connection establishment unit is used to establish a wireless connection between hosts corresponding to the connection frequency according to the gateway information.

6. A wireless access system based on ZETA technology as claimed in claim 5, characterized in that: The step of determining the scanning frequency band according to the type of the slave includes: If the type of the slave is a sensor, the scanning frequency band is a first preset frequency band; If the type of the slave is non-sensor type, the scanning frequency band is the second preset frequency band; Wherein, the first preset frequency band and the second preset frequency band are both within the operating frequency range of the ZETA technology.

7. A wireless access system based on ZETA technology as claimed in claim 5, characterized in that: The signal detection module includes a scanning frequency band division unit, a detection signal sending unit, a response signal receiving unit, a signal selection unit and a connection frequency determination unit; The scanning frequency band division unit is used to divide the scanning frequency band into a plurality of detection frequencies according to the scanning frequency band and a preset frequency interval; The detection signal sending unit is used to send detection signals corresponding to each of the detection frequencies respectively; The response signal receiving unit is used to detect whether a response signal is received within a preset time period after each detection signal is sent, and if a response signal is received, save the signal strength of the response signal and the corresponding detection frequency; The signal selection unit is used to select the response signal with the highest signal strength from the stored response signals as the host response signal after sending all the detection signals corresponding to the detection frequencies; The connection frequency determination unit is used to use the detection frequency corresponding to the response signal as the connection frequency.

8. A wireless access system based on ZETA technology as claimed in any one of claims 5 to 7, characterized in that: Also includes: The host operates at a first operating frequency and a second operating frequency, wherein the first operating frequency is within a first preset frequency band, the second operating frequency is within a second preset frequency band, and a difference between the first operating frequency and the second operating frequency is a preset fixed value; During operation, the host continuously detects whether it has received the detection signal, random number, and registration information; When the host receives the detection signal, it sends a corresponding response signal; When the host receives the random number, it calculates the random number according to a preset calculation rule to obtain a second registration value, encrypts the second registration value according to a preset encryption rule to obtain a first response information, and sends the first response information; When the host receives the encrypted registration information, it decrypts the encrypted registration information according to the preset decryption rule, obtains the registration information and saves it, encrypts the gateway information of the host according to the preset encryption rule, obtains the second response information, and sends the second response information.

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