TWI765148B - Communication method for internet of things and system thereof - Google Patents

Abstract

A communication method for Internet of Things and a system thereof are proposed. The communication method for Internet of Things is for transmitting a message to an Internet and includes a device condition acquisition step, a switch mode judging step and a message transmitting step. The device condition acquisition step is for obtaining a signal connecting condition between a demand device and a first base station, and the message is carried by the demand device. The switch mode judging step is for judging whether or not the demand device activates a switch mode according to the signal connecting condition. If the demand device activates the switch mode, a first communication path through the demand device, a target device, a second base station and the Internet is established according to the switch mode. If the demand device does not activate the switch mode, a second communication path through the demand device, the first base station and the Internet is established. The message transmitting step is for transmitting the message to the Internet via one of the first communication path and the second communication path. Therefore, the communication method for Internet of Things and the system thereof of the present disclosure utilize the switch mode to communicate the demand device with the target device, thereby not only increasing the convenience of Internet connections, but also reduce hardware cost and power consumption.

Description

Communication method and system for internet of things

The present invention relates to a communication method and system, in particular to a communication method and system for the Internet of Things.

Since the existing Internet of Things (IoT) systems mainly include LTE CAT M (Long Term Evolution Category M) and LTE NB-IoT (Long Term Evolution Narrow Band-Internet of Things), these two systems are directly Connect to the base station to access the Internet. If the devices need to communicate or transmit data, it needs to be done through the base station. But if the base station network signal is poor, it will not be able to transmit, even if the devices are very close together.

In practical applications, the device sometimes needs to communicate with the base station to connect to the Internet, and sometimes needs to connect to other devices to communicate. A common practice is to first use a Wireless Wide Area Network (WWAN) system to connect the base station, and then use another local area network system to connect other devices. However, such an approach is not only costly, but also fails to save power. It can be seen from this that there is currently a lack of A communication method and system for the Internet of Things that is low in cost, can save power consumption and can effectively realize the connection between devices, so the relevant industry is looking for its solution.

Therefore, an object of the present invention is to provide a communication method and system for the Internet of Things, which enable transmission and reception at different frequencies through a Half Duplex Frequency Division Duplex (HD-FDD) mode. At the same time, combined with the specific packet signal in the switching mode to find the best connectable target device, so as to effectively complete the transmission of information, which can increase the convenience of network deployment without increasing the extra hardware cost. Save power consumption.

One embodiment of the method aspect of the present invention provides a communication method for the Internet of Things, which is used for transmitting information to a network, and the communication method includes a device status acquisition step, a switching mode determination step, and an information transmission step. The step of obtaining the device status is to obtain the signal connection status between the demanded device and the first base station, and the information is contained in the demanded device. In addition, the switching mode determination step is to determine whether the demand device activates the switching mode according to the signal connection condition. If yes, establish a first communication path between the demand device, the target device, the second base station and the network according to the switching mode; if not, establish a second communication path between the demand device, the first base station and the network . The information transmitting step transmits the information of the demand device to the network through one of the first communication path and the second communication path.

In this way, the communication method for the Internet of Things of the present invention realizes the interconnection between the demand device and the target device through the switching mode obtained by judging the signal connection situation, which not only increases the convenience of network deployment, but also does not add extra Save power consumption under the condition of hardware cost.

Other examples of the aforementioned embodiments are as follows: the aforementioned switching mode may include a target device searching step and a target receiving frequency calculating step, wherein the target device searching step drives the demand device to search for nearby target devices and scan the target transmit frequency of the target device. In the step of calculating the target receiving frequency, the target receiving frequency corresponding to the target transmitting frequency is calculated according to the corresponding table between the target transmitting frequency and the frequency. The target transmit frequency is different from the target receive frequency. In addition, the aforementioned switching mode may include a frequency switching step, and the frequency switching step is to switch the required transmission frequency and the required reception frequency of the demand device to the target reception frequency and the target transmission frequency, respectively.

Other examples of the aforementioned embodiments are as follows: the aforementioned switching mode may include a packet transmission step and an acknowledgment return step, wherein the packet transmission step drives the requesting device to transmit a packet signal with a target receiving frequency to the target device. The confirmation return step drives the target device to determine whether to return an confirmation message to the demand device according to the packet signal. Furthermore, the switching mode may include a link request transmitting step and a link request returning step, wherein the link request transmitting step drives the demand device to transmit a link request signal with the target receiving frequency to the target device according to the confirmation information. The step of returning the connection request drives the target device to return a connection confirmation message to the requesting device according to the connection request signal, so as to establish a connection with the requesting device.

Other examples of the aforementioned implementation manner are as follows: the aforementioned packet signal may include mode switching information, protocol switching frequency band information, and transmitting/receiving signal information, wherein the mode switching information represents information that the requesting device requests to activate the switching mode. The protocol switching frequency band information represents the switching frequency band information to be connected by the demand device. The transmitted and received signal information includes a signal quality indicator between the demand device and the target device and a data corresponding to the signal quality indicator, wherein the signal quality indicator includes a Received Signal Strength Indicator (RSSI), a signal-to-noise ratio (Signal-to-Interference-plus-Noise Ratio; SINR), a reference signal received strength (Reference Signal Received Power; RSRP), a block error rate (Block Error Rate; BLER), a throughput (Throughput), demand One or a combination of the distances between the device and the target device. When the data of the signal quality index is greater than or equal to the preset value, the confirmation return step returns confirmation information to the demand device; when the signal quality index data is less than the preset value, the confirmation return step does not return confirmation information to the demand device .

Other examples of the foregoing implementation manner are as follows: in the foregoing confirmation return step, if a plurality of target devices respectively return a plurality of confirmation messages to the requesting device at the same time, the requesting device executes an information detection mechanism for the confirmation messages, so as to An optimal one of these target devices is selected to deliver the information. In addition, the aforementioned information detection mechanism may include one or a combination of received signal strength index, signal-to-noise ratio, reference signal received strength, block error rate, throughput, and distance between the desired device and the target device.

Another embodiment of the method aspect according to the present invention provides a communication method for the Internet of Things, which is used for transmitting information to the network. The communication method includes a device status acquisition step, a switching mode determination step, and an information transmission step. The step of obtaining the device status is to obtain the user demand status input by the user terminal to the demand device, and the information is contained in the demand device. The step of determining the switching mode is to determine whether the demand device activates the switching mode according to the user's demand. If yes, establish a first communication path between the demand device, the target device, the second base station and the network according to the switching mode; if not, establish a second communication path between the demand device, the first base station and the network . The information transmitting step transmits the information of the demand device to the network through one of the first communication path and the second communication path.

Thereby, the communication method for the Internet of Things of the present invention realizes the interconnection between the demand device and the target device through the switching mode obtained by judging the user demand situation, which can not only increase the convenience of network deployment, but also do not add extra Save power consumption under the condition of hardware cost.

Other examples of the aforementioned embodiments are as follows: the aforementioned switching mode may include a target device searching step and a target receiving frequency calculating step, wherein the target device searching step drives the demand device to search for nearby target devices and scan the target transmit frequency of the target device. The step of calculating the target receiving frequency is to calculate the target receiving frequency corresponding to the target transmitting frequency according to the target transmitting frequency and the frequency correspondence table. The target transmit frequency is different from the target receive frequency. In addition, the above-mentioned switching mode may include a frequency switching step, and the frequency switching step is to switch the required transmitting frequency and the required receiving frequency of the demand device to the target receiving frequency and the target transmitting frequency, respectively.

Other examples of the aforementioned embodiments are as follows: the aforementioned switching mode may include a packet transmission step and an acknowledgment return step, wherein the packet transmission step drives the requesting device to transmit a packet signal with a target receiving frequency to the target device. The confirmation return step drives the target device to determine whether to return an confirmation message to the demand device according to the packet signal. Furthermore, the aforementioned switching mode may include a link request transmitting step and a link request returning step, wherein the link request transmitting step drives the demand device to transmit a link request signal with the target receiving frequency to the target device according to the confirmation information. The step of returning the connection request drives the target device to return a connection confirmation message to the requesting device according to the connection request signal, so as to establish a connection with the requesting device.

Other examples of the aforementioned embodiments are as follows: the aforementioned packet signal includes mode switching information, protocol switching frequency band information, and transmit/receive signal information, wherein the mode switch information represents information that the requesting device requests to activate the switching mode. The protocol switching frequency band information represents the switching frequency band information to be connected by the demand device. The transmitted and received signal information includes a signal quality index between the demand device and the target device and a data corresponding to the signal quality index, wherein the signal quality index includes the received signal strength index, the interference-to-noise ratio, the reference signal received strength, and the block error rate. One or a combination of , throughput, distance between the demand device and the target device. When the data of the signal quality index is greater than or equal to the preset value, the confirmation return step returns confirmation information to the demand device; when the signal quality index data is less than the preset value, the confirmation return step does not return confirmation information to the demand device .

Other examples of the foregoing implementation manner are as follows: in the foregoing confirmation return step, if a plurality of target devices respectively return a plurality of confirmations at the same time, After the authentication information is sent to the requesting device, the requesting device performs an information detection mechanism for the confirmation information, so as to select a best one of the target devices to transmit the information. In addition, the aforementioned information detection mechanism may include one or a combination of received signal strength index, signal-to-noise ratio, reference signal received strength, block error rate, throughput, and distance between the desired device and the target device.

According to one embodiment of the structural aspect of the present invention, there is provided a communication system for the Internet of Things, which is used for transmitting information to the network. The communication system for the Internet of Things includes a target device and a demand device, wherein the demand device signal is connected to the target device, and the information is contained in the demand device. The demand device includes an antenna, an antenna switching circuit and a control processor. The antenna switching circuit is electrically connected to the antenna and the control processor, and the control processor determines whether to activate the switching mode according to the signal connection or user demand. If yes, establish a first communication path between the demand device, the target device, the second base station and the network according to the switching mode; if not, establish a second communication path between the demand device, the first base station and the network communication path. Information is communicated to the network through one of the first communication path and the second communication path.

Thereby, the communication system for the Internet of Things of the present invention can be realized by using the existing hardware, without additional setting or replacement of the hardware, and the structure is simple and the cost is low. Furthermore, the required device utilizes the characteristics of HD-FDD to match the switching mode, and can adjust the required transmit frequency and the required receive frequency to connect to the target device, thereby effectively completing information transmission and increasing the convenience of network deployment, thus avoiding the need for conventional techniques. If the network signal of the base station is poor, the information cannot be transmitted.

Other examples of the aforementioned embodiments are as follows: the aforementioned switching mode searches for nearby target devices, and scans the target transmission frequencies of the target devices. The switching mode calculates the target receiving frequency corresponding to the target transmitting frequency according to the target transmitting frequency and a frequency correspondence table, and the target transmitting frequency is different from the target receiving frequency. Furthermore, in the aforementioned switching mode, the required transmit frequency and the required receive frequency of the demand device are respectively switched to the target receive frequency and the target transmit frequency, and the demand device transmits a packet signal with the target receive frequency to the target device. The target device returns confirmation information to the requesting device according to the packet signal. In addition, the operating frequency band of the aforementioned antenna may cover a long-term evolution technology frequency band.

100, 100a‧‧‧Communication method for Internet of Things

S12, S22‧‧‧ device status acquisition steps

200‧‧‧Communication system for Internet of Things

210A‧‧‧Demand device

S14, S24‧‧‧Switching Mode Judgment Steps

S16, S26‧‧‧Information transmission steps

S222‧‧‧Signal connection

S224‧‧‧User needs

S242‧‧‧Switch mode

S2421‧‧‧Target device search procedure

S2422‧‧‧Calculation steps of target receiving frequency

S2423‧‧‧Frequency switching steps

S2424‧‧‧Packet transmission steps

S2425‧‧‧Confirmation and return steps

S2426‧‧‧Connection Request Transmission Procedure

S2427‧‧‧Connection request return steps

Point_A‧‧‧First time point

Point_B‧‧‧Second time point

Point_C‧‧‧The third time point

Point_D‧‧‧fourth time point

Point_E‧‧‧The fifth time point

Point_F‧‧‧Sixth time point

Point_G‧‧‧Seventh time point

Point_H‧‧‧The eighth time point

210B, 210C, 210D, 210E‧‧‧target device

211‧‧‧Antenna

212‧‧‧Antenna switching circuit

213‧‧‧Power Amplifier

214‧‧‧Mixer banks

215‧‧‧Basic frequency integrated circuit

2152‧‧‧Packet Signal

2152a‧‧‧Mode switching information

2152b‧‧‧Protocol switching frequency band information

2152c‧‧‧transmitting and receiving signal information

216‧‧‧Control Processor

220A‧‧‧First base station

220B‧‧‧Second base station

TX‧‧‧Target transmit frequency

RX‧‧‧target receiving frequency

Tx_Path‧‧‧transmission path

Rx_Path‧‧‧Receive path

FIG. 1 is a schematic flowchart of a communication method for the Internet of Things according to an embodiment of the present invention; FIG. 2 is a schematic diagram of a communication system for the Internet of Things according to another embodiment of the present invention; A schematic flowchart of a communication method for the Internet of Things according to another embodiment of the present invention; FIG. 4 is a schematic diagram of a packet signal in the switching mode determination step of FIG. A schematic diagram of a sequence flow of a communication method for the Internet of Things; and FIG. 6 is a block diagram showing the demand device of FIG. 2 .

Several embodiments of the present invention will be described below with reference to the drawings. For the sake of clarity, many practical details are set forth in the following description. It should be understood, however, that these practical details should not be used to limit the invention. That is, in some embodiments of the present invention, these practical details are unnecessary. In addition, for the purpose of simplifying the drawings, some well-known and conventional structures and elements will be shown in a simplified and schematic manner in the drawings; and repeated elements may be denoted by the same reference numerals.

In addition, when a certain element (or unit or module, etc.) is "connected" to another element herein, it may mean that the element is directly connected to another element, or it may also mean that a certain element is indirectly connected to another element , that is, there are other elements interposed between said element and another element. When it is expressly stated that an element is "directly connected" to another element, it means that no other element is interposed between the element and the other element. The terms first, second, third, etc. are only used to describe different elements, and do not limit the elements themselves. Therefore, the first element can also be renamed as the second element. And the combination of elements/units/circuits in this article is not a commonly known, conventional or well-known combination in this field, and it cannot be determined whether the combination relationship of the elements/units/circuits is well-known or not easily understood by those in the technical field. Usually the knowledgeable can do it easily.

Please refer to FIG. 1 and FIG. 2 together, wherein FIG. 1 is a schematic flowchart of a communication method 100 for the Internet of Things according to an embodiment of the present invention; and FIG. 2 is another embodiment of the present invention. A schematic diagram of a communication system 200 for the Internet of Things. As shown in the figure, the communication method for the Internet of Things 100 is implemented on the communication system 200 for the Internet of Things, and the communication method 100 for the Internet of Things is used to transmit the information of the required device 210A to the Internet (Internet), which includes the step of obtaining the device status S12 and the step of judging the switching mode S14 and information transmission step S16.

The device status acquisition step S12 can be divided into two statuses, one is automatic status acquisition, and the other is passive status acquisition. The device state acquisition step S12 of automatic state acquisition is to acquire the signal connection between the requesting device 210A and the first base station 220A, and the passive state acquisition step S12 of the device state acquisition is to acquire a user terminal input to the user of the requesting device 210A demand situation. The information to be transmitted is contained in the requesting device 210A.

The switch mode determination step S14 is to determine whether the demand device 210A activates the switch mode according to the signal connection condition or the user demand condition. If yes, establish a first communication path between the demand device 210A, the target device 210B, the second base station 220B and the network according to the switching mode; if not, establish a communication path between the demand device 210A, the first base station 220A and the network the second communication path.

The information transmission step S16 is to transmit the information of the requesting device 210A to the network through one of the first communication path and the second communication path. Thereby, the communication method 100 for the Internet of Things of the present invention realizes the interconnection between the demand device 210A and the target device 210B by switching the mode, which not only increases the convenience of network deployment, but also does not increase the extra hardware cost. Condition to save power consumption. The details of the above steps will be described below through more detailed embodiments.

Please refer to FIGS. 1 to 5 together, wherein FIG. 3 is a schematic flowchart of a communication method 100 a for the Internet of Things according to another embodiment of the present invention; FIG. 4 is a step of determining the switching mode in FIG. 3 The schematic diagram of the packet signal 2152 in S24 ; and FIG. 5 is a schematic diagram showing the sequence flow of the communication method 100 a for the Internet of Things in FIG. 3 . As shown in the figure, the communication method 100a for the Internet of Things is used to transmit information to the network, which includes a device status obtaining step S22, a switching mode determination step S24, and an information transmission step S26.

The device status acquisition step S22 can be divided into two statuses, one is automatic status acquisition, and the other is passive status acquisition. The device state acquisition step S12 of automatic state acquisition is to acquire the signal connection state S222 between the requesting device 210A and the first base station 220A, and the device state acquisition step S12 of passive state acquisition is to acquire a user terminal input to the requesting device 210A. User demand situation S224. The information to be transmitted is contained in the requesting device 210A. In detail, under the condition of automatic acquisition, the signal connection status S222 can be divided into "normal connection" and "abnormal connection". The basis for judging whether the connection is normal or not is through the signal quality index and the data corresponding to the signal quality index. The signal quality indicators include Received Signal Strength Indicator (RSSI), Signal-to-Interference-plus-Noise Ratio (SINR), Reference Signal Received Power (RSRP), One of Block Error Rate (BLER), Throughput (Throughput), and the distance between the requesting device 210A and the first base station 220A, or a combination thereof. When the data of the signal quality index is greater than or equal to the preset value, the signal connection status S222 is "connected" Connection is normal"; when the data of the signal quality index is less than the preset value, the signal connection status S222 is "abnormal connection". In addition, under the condition of passive status acquisition, the user demand status S224 can be divided into "with demand" and "without demand", "with demand" means that the demand device 210A has received an input from the client, and "no demand" means demand Device 210A receives no input from the client.

The switch mode determination step S24 is to determine whether the demand device 210A starts the switch mode S242 according to the signal connection situation S222 or the user demand situation S224. If yes, establish a first communication path between the demand device 210A, the target device 210B, the second base station 220B and the network according to the switching mode S242; if not, establish a communication path between the demand device 210A, the first base station 220A and the network the second communication path between them. In detail, the switching mode determination step S24 can be divided into two situations, one is automatic switching, which corresponds to the automatic situation acquisition in the aforementioned device situation acquisition step S22. The other is passive handover, which corresponds to the passive status acquisition in the aforementioned device status acquisition step S22. The step S24 of determining the switching mode of the automatic switching is to determine whether the requesting device 210A starts the switching mode S242 according to the signal connection situation S222. When the signal connection status S222 of the device status acquisition step S22 is "normal connection", the requesting device 210A maintains the connection with the first base station 220A without starting the switching mode S242; in other words, the second communication path is established. When the signal connection status S222 of the device status acquisition step S22 is "abnormal connection", the requesting device 210A will start the switching mode S242 to establish a connection with the target device 210B; in other words, the first communication path is established, and the target device 210B and the first The connection between the two base stations 220B is normal. Other In addition, the switching mode determination step S24 of passive switching is to determine whether the requesting device 210A activates the switching mode S242 according to the user demand situation S224. When the user demand status S224 in the device status acquisition step S22 is "no demand", the demand device 210A maintains the connection with the first base station 220A without starting the switching mode S242; in other words, the second communication path is established. When the user requirement status S224 of the device status acquisition step S22 is "required", the requirement device 210A will start the switching mode S242 to establish a connection with the target device 210B; in other words, the first communication path is established, and the target device 210B communicates with the first The connection between the two base stations 220B is normal.

In addition, the switching mode S242 of the switching mode determination step S24 includes a target device searching step S2421, a target receiving frequency calculation step S2422, a frequency switching step S2423, a packet transmission step S2424, an acknowledgement return step S2425, a connection request transmission step S2426, and a connection request return step S2426. Pass to step S2427. The target device searching step S2421 drives the requesting device 210A to search for the nearby target device 210B, and scans the target transmission frequency TX of the target device 210B. Furthermore, the target reception frequency calculation step S2422 is to calculate the target reception frequency RX corresponding to the target transmission frequency TX according to the target transmission frequency TX and a frequency correspondence table. The target transmit frequency TX is different from the target receive frequency RX. The frequency correspondence table in this embodiment is obtained according to the 3rd Generation Partnership Project (3GPP) specification, but is not limited thereto. Table 1 shows the parameters of Band 1 to Band 4 defined in the 3GPP specification. Taking Band 2 (LTE BAND 2 CHANNEL 18900) as an example, the target transmit frequency TX is 1880MHz (frequency range is 1850-1910MHz), and the target receive frequency RX is 1960MHz (frequency range is 1930-1990MHz), the target transmit frequency TX is different from the target receive frequency RX, and FDD stands for Frequency Division Duplex.

The frequency switching step S2423 is to switch a required transmit frequency and a required receive frequency of the requesting device 210A to the target receive frequency RX and the target transmit frequency TX, respectively. Furthermore, the packet transmission step S2424 drives the requesting device 210A to transmit a packet signal 2152 to the target device 210B according to the target receiving frequency RX. The packet signal 2152 includes two guard intervals, mode switching information 2152a, protocol switching frequency band information 2152b, transmit/receive signal information 2152c and data, wherein the mode switch information 2152a represents the information that the requesting device 210A requests to activate the switching mode S242. The protocol switching frequency band information 2152b represents the switching frequency band information that the requesting device 210A wants to connect to. The transmitted and received signal information 2152c includes a signal quality index between the requesting device 210A and the target device 210B and a data corresponding to the signal quality index, wherein the signal quality index includes the received signal strength index, the interference-to-noise ratio, the reference signal received strength, the area One or a combination of block error rate, throughput, and distance between demand device 210A and target device 210B. For example, the guard interval can be "0x00", "0x01", "0x02", "0x03" indicates it. The mode switching information 2152a can be represented by "0x00", "0x01", "0x02", and "0x03". When the mode switching information 2152a is "0x00", it means that it is only used for information collection of peripheral devices; when the mode switching information 2152a is "0x00" When it is "0x01", it means that it is only used to collect the status of the target device 210B: when the mode switching information 2152a is "0x02", it means that the normal mode is switched. If the target device 210B is idle, it will respond and need to connect to transmit data ; When the mode switch information 2152a is "0x03", it represents an emergency mode switch, which will force the target device 210B to respond, and needs to connect to transmit data. The protocol switching frequency band information 2152b can be represented by "0x00000000" to "0xFFFFFFFF", wherein the first two digits represent the frequency band information, the third digit represents the switching bandwidth information, and the last five digits represent the channel (channel) Information, for example: when the protocol switching frequency band information 2152b is "0x01304469", it represents the information that "band/bandwidth/channel" is "band1/5MHz/CH18025". The transmit/receive signal information 2152c can be represented by "0x000000" to "0xFFFFFF", wherein the first three digits represent the transmit signal strength of the target transmit frequency TX, and the last three digits represent the receive signal strength of the target receive frequency RX. The first of the three digits represents a positive or negative number, "0" represents a positive number, and "F" represents a negative number. For example: when the transmit/receive signal information 2152c is "0x017F50", it means that the transmit signal strength and the receive signal strength are 23dBm and -80dBm respectively.

The acknowledgement return step S2425 drives the target device 210B to determine whether to return an acknowledgement (Acknowledgement; ACK) to the demand device 210A according to the packet signal 2152 . when the aforementioned letter When the data of the signal quality index is greater than or equal to the preset value, the confirmation return step S2425 returns the confirmation information to the demand device 210A; when the data of the aforementioned signal quality index is less than the preset value, the confirmation return step S2425 does not return the confirmation information to the demand device 210A. Furthermore, the link request transmitting step S2426 drives the requesting device 210A to transmit a link request signal to the target device 210B at the target receiving frequency RX according to the confirmation information. The link request return step S2427 drives the target device 210B to return a link confirmation message to the demand device 210A according to the link request signal, so as to establish a connection with the demand device 210A.

In addition, it is worth mentioning that, in the confirmation return step S2425, if a plurality of target devices 210B respectively return a plurality of confirmation messages to the requesting device 210A at the same time, the requesting device 210A executes an information detection mechanism for the confirmation messages , to select the best one of the target devices 210B to transmit information. The information detection mechanism includes one or a combination of the received signal strength index, the signal-to-interference ratio, the reference signal received strength, the block error rate, the throughput, and the distance between the requesting device 210A and each target device 210B. In this way, the demand device 210A of the present invention can select the best one among the plurality of target devices 210B to transmit the information through the information detection mechanism, thereby effectively completing the information transmission and increasing the convenience of network deployment, thus avoiding the prior art. If the network signal of the base station is poor, the information cannot be transmitted.

The information transmission step S26 is to transmit the information of the requesting device 210A to the network through one of the first communication path and the second communication path. Specifically, when the switching mode S242 is activated in the switching mode determining step S24, the information transmitting step S26 transmits the requesting device through the first communication path The information of 210A is sent to the network; otherwise, when the switching mode determination step S24 does not activate the switching mode S242, the information transmission step S26 will transmit the information of the requesting device 210A to the network through the second communication path. In addition, the information of the demand device 210A may be various information, such as fire situation, status information, synchronization information, and the like. And the level of the information can be set by the client, for example, setting the fire situation to the highest level.

Please refer to FIG. 2 , FIG. 3 and FIG. 5 together. It can be seen from the schematic diagram of the sequence flow in FIG. 5 that the device status obtaining step S22 is performed at the first time point Point_A. The target device searching step S2421, the target receiving frequency calculation step S2422, and the frequency switching step S2423 in the switching mode determination step S24 are performed at the second time point Point_B, the packet transmission step S2424 is performed at the third time point Point_C, and the confirmation return step S2425 is performed at At the fourth time point Point_D, the connection request transmission step S2426 is performed at the fifth time point Point_E, and the connection request return step S2427 is performed at the sixth time point Point_F. The information transmission step S26 is performed at the seventh time point Point_G and the eighth time point Point_H, wherein at the seventh time point Point_G, the target device 210B and the requesting device 210A establish a connection and transmit data; at the eighth time point Point_H , the target device 210B establishes a connection with the second base station 220B and transmits data. In other words, the target device 210B will not be connected to the requesting device 210A and the second base station 220B at the same time, that is, the target device 210B will only be connected to one of the devices or the base station at the same time. Thereby, the communication method 100a for the Internet of Things of the present invention makes the transmission and reception operate on different frequencies through the HD-FDD mode, and at the same time combines the specific packet signal 2152 in the switching mode S242 to find the best available The connected target device 210B can effectively complete the transmission of information, which can increase the convenience of network deployment and save power consumption without increasing additional hardware costs.

Please refer to FIG. 2 , FIG. 3 and FIG. 6 together, wherein FIG. 6 is a block diagram of the demand device 210A in FIG. 2 . The communication system 200 for the Internet of Things includes a demand device 210A, target devices 210B, 210C, 210D, 210E, a first base station 220A, and a second base station 220B. When the demand device 210A wants to connect to the network with the second base station 220B through the target device 210B, the demand device 210A starts the switching mode S242. The demand device 210A is signal-connected to the target device 210B, wherein the information to be transmitted is contained in the demand device 210A. The demand device 210A includes an antenna 211 , an antenna switching circuit 212 , a power amplifier 213 (Power Amplifier), a mixer group 214 (mixer), a baseband integrated circuit 215 (BBIC) and a control processor 216 .

The operating frequency band of the antenna 211 covers a Long Term Evolution (LTE) frequency band. The antenna switching circuit 212 is electrically connected to the antenna 211, and the antenna switching circuit 212 can switch the transmit path Tx_Path and the receive path Rx_Path. The antenna switching circuit 212 in this embodiment is a pair of four switches (Primary Antenna Switch SP4T), but not limited thereto. The power amplifier 213 is electrically connected to the antenna switching circuit 212 through the transmission path Tx_Path, and the mixer group 214 is electrically connected to the power amplifier 213 and is electrically connected to the antenna switching circuit 212 through the receiving path Rx_Path. The baseband integration circuit 215 is electrically connected to the mixer group 214 and outputs a packet signal 2152, the packet signal 2152 is the same as the frequency switching step S2423. The details of the packet signal 2152 are shown in FIG. 4 and will not be repeated here. Furthermore, the control processor 216 is electrically connected to the antenna switching circuit 212 through the mixer group 214, and the control processor 216 determines whether to activate the switching mode S242 according to the signal connection condition S222 or the user requirement condition S224. If so, the first communication path between the demand device 210A, the target device 210B, the second base station 220B and the network is established according to the switching mode S242, and the information of the demand device 210A is transmitted to the network through the first communication path. If not, a second communication path between the requesting device 210A, the first base station 220A and the network is established, and the information of the requesting device 210A is transmitted to the network through the second communication path. When the requesting device 210A wants to connect with the target device 210B, the control processor 216 starts the switching mode S242; in other words, the control processor 216 executes all the steps in the switching mode S242 in FIG. 3, and then establishes a first communication path for transmitting News. Therefore, the demand device 210A of the present invention utilizes the characteristics of HD-FDD and the switching mode S242 to adjust the demand transmission frequency and demand reception frequency to connect to the target device 210B, thereby effectively completing information transmission and increasing the convenience of network deployment. Therefore, the problem in the prior art that information cannot be transmitted if the network signal of the base station is poor can be avoided. In addition, the communication system 200 for the Internet of Things of the present invention can be realized by using the existing hardware without additional setting or replacement of the hardware, and the structure is simple and the cost is low.

In addition, in other embodiments, the control processor may also be located in the mixer group, that is, the control processor and the mixer group may form a radio frequency integrated circuit (Radio Frequency Integrated Circuit; RFIC). In addition, the demand device 210A may further include a low-pass filter bank (Low Pass Filter; LPF), the low-pass filter bank includes a transmit low-pass filter bank and a receive low-pass filter bank, and the transmit low-pass filter bank and the receive low-pass filter bank are respectively arranged on the transmit path Tx_Path and the receive path Rx_Path, Used to filter out high frequency noise. Furthermore, the structures of the demand device 210A and the target devices 210B, 210C, 210D, and 210E may be the same as each other, and the operating frequency bands of their antennas all cover the LTE frequency band, but are not limited to the above.

To sum up, the specific situations in which the communication methods 100 and 100a for the Internet of Things and the communication system 200 for the Internet of Things of the present invention can be applied are as follows: In the first example, in terms of forest fire prevention, when the demand device 210A detects a fire situation , on the one hand, the demand device 210A can send the information to the first base station 220A, and transmit it to the cloud for the remote end to know; , prepare the surrounding target devices 210B, or take preventive measures. In the second example, when both the demand device 210A and the target device 210B are in the basement and the signal of the base station is relatively weak, the target device 210B is close to the door (or window) and can contact the base station. If the demand device 210A has data needs For sending, the data can be transmitted to the target device 210B through the switching mode S242, and then uploaded to the base station through the target device 210B. In the third example, when the demand device 210A is used as an electronic fence, the demand device 210A can transmit the detected information to the first base station 220A and the cloud (ie, the network), and also needs to detect the surrounding target device 210B, and Contact with the surrounding target device 210B to avoid loopholes. The above are examples of specific scenarios, but the application scenarios are not limited to the above.

It can be seen from the above-mentioned embodiments that the present invention has the following advantages: First, through the HD-FDD mode, the transmission and reception are operated on different frequencies, and at the same time, the specific packet signal in the switching mode is combined to find the best connectable mode. The target device can effectively complete the transmission of information, which can increase the convenience of network deployment and save power consumption without increasing additional hardware costs. Second, the demand device can select the best one among the multiple target devices to transmit information through the information detection mechanism, so as to maintain the connection between the demand device and the network. Third, the demand device uses the characteristics of HD-FDD to match the switching mode, and the demand transmission frequency and demand reception frequency can be adjusted to connect the target device, which can effectively complete the transmission of information and increase the convenience of network deployment, so it can avoid conventional knowledge. In the technology, if the network signal of the base station is poor, the information cannot be transmitted. In addition, the communication system for the Internet of Things of the present invention can be realized by using the existing hardware without additional setting or replacement of the hardware, and the structure is simple and the cost is low.

Although the present invention has been disclosed in the above embodiments, it is not intended to limit the present invention. Anyone skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, the protection of the present invention The scope shall be determined by the scope of the appended patent application.

100‧‧‧Communication method for Internet of Things

S12‧‧‧Device Status Obtaining Steps

S14‧‧‧Switching Mode Judgment Steps

S16‧‧‧Information Transmission Steps

Claims (12)

A communication method for the Internet of Things, for transmitting information to a network, the communication method includes the following steps: a device status obtaining step, which obtains a signal connection status between a demand device and a first base station , the information is contained in the demand device; a switching mode determination step is to judge whether the demand device activates a switching mode according to the signal connection condition, and if so, establish the demand device, a target device, and a second base according to the switching mode a first communication path between the station and the network, if otherwise a second communication path between the demand device, the first base station and the network is established; and an information transfer step through the first One of the communication path and the second communication path transmits the information of the demand device to the network; wherein the switching mode includes: a target device searching step, which drives the demand device to search for the adjacent target device, and A target transmission frequency of the target device is scanned; a target reception frequency calculation step is to calculate a target reception frequency corresponding to the target transmission frequency according to the target transmission frequency and a frequency correspondence table; a frequency switching step is to calculate the desired reception frequency A required transmitting frequency and a required receiving frequency of the device are respectively switched to the target receiving frequency and the target transmitting frequency; A packet transmission step, which drives the requesting device to transmit a packet signal with the target receiving frequency to the target device; and a confirmation return step, which drives the target device to determine whether to return a packet according to a data size of the packet signal. Confirmation information is sent to the requesting device; wherein, the target transmitting frequency is different from the target receiving frequency. The communication method for the Internet of Things as described in claim 1, wherein the switching mode further comprises: a link request transmitting step, which drives the demand device to transmit a link request with the target receiving frequency according to the confirmation information a signal to the target device; and a link request return step, which drives the target device to return a link confirmation message to the demand device according to the link request signal, so as to establish a connection with the demand device. The communication method for the Internet of Things as described in item 1 of the scope of the application, wherein the packet signal includes: a mode switching information, which represents the information that the demand device requests to activate the switching mode; a protocol switching frequency band information, which represents the demand Switching frequency band information for one of the devices to be connected; and A transmit-receive signal information, which includes a signal quality indicator between the demand device and the target device and the data corresponding to the signal quality indicator, wherein the signal quality indicator includes a Received Signal Strength Indicator (RSSI; RSSI) ), a Signal-to-Interference-plus-Noise Ratio (SINR), a Reference Signal Received Power (RSRP), a Block Error Rate (BLER), a One of throughput (Throughput), the distance between the demand device and the target device, or a combination thereof; wherein, when the data of the signal quality indicator is greater than or equal to a preset value, the step of returning the confirmation returns Send the confirmation information to the demand device; when the data of the signal quality index is less than the preset value, the confirmation return step does not return the confirmation information to the demand device. The communication method for the Internet of Things as described in item 1 of the scope of the application, wherein in the confirmation return step, if a plurality of the target devices respectively return a plurality of the confirmation information to the demand device at the same time, the demand device will A message detection mechanism is executed for the confirmation messages to select a best one of the target devices to transmit the message. The communication method for the Internet of Things as described in item 4 of the patent application scope, wherein the information detection mechanism includes a received signal strength indicator one of a target, a signal-to-noise ratio, a reference signal received strength, a block error rate, a throughput, and a distance between the desired device and each of the target devices, or a combination thereof. A communication method for the Internet of Things is used to transmit a piece of information to a network, the communication method comprises the following steps: a step of obtaining a device condition, which is to obtain a user demand condition input by a client to a demand device, the information contained in the demand device; a switching mode determination step is to judge whether the demand device starts a switching mode according to the user demand situation, and if so, establish the demand device, a target device, a second base station and the switching mode according to the switching mode a first communication path between the networks, if otherwise, a second communication path between the requesting device, a first base station and the network is established; and an information transfer step is to communicate with the first communication path through the first communication path One of the second communication paths transmits the information of the demand device to the network; wherein the switching mode includes: a target device searching step, driving the demand device to search for the adjacent target device and scan the target a target transmission frequency of the device; a target reception frequency calculation step is to calculate a target reception frequency corresponding to the target transmission frequency according to the target transmission frequency and a frequency correspondence table; A frequency switching step is to switch a required transmit frequency and a required receive frequency of the demand device to the target receive frequency and the target transmit frequency respectively; a packet transmission step is to drive the demand device to transmit a signal with the target receive frequency A packet signal is sent to the target device; and an acknowledgment return step is to drive the target device to determine whether to return an acknowledgment message to the demand device according to a data size of the packet signal; wherein the target transmit frequency and the target receive frequency is different. The communication method for the Internet of Things as described in claim 6, wherein the switching mode further comprises: a step of transmitting a connection request, which drives the demand device to transmit a connection request with the target receiving frequency according to the confirmation information a signal to the target device; and a link request return step, which drives the target device to return a link confirmation message to the demand device according to the link request signal, so as to establish a connection with the demand device. The communication method for the Internet of Things as described in item 6 of the patent application scope, wherein the packet signal includes: A mode switching information, which represents the information that the requesting device requests to activate the switching mode; a protocol switching frequency band information, which represents a switching frequency band information that the requesting device wants to connect to; and a transmitting and receiving signal information, which includes the requesting device and the A signal quality indicator between target devices and the data corresponding to the signal quality indicator, wherein the signal quality indicator includes a received signal strength indicator, a signal-to-interference ratio, a reference signal received strength, a block error rate, a One of throughput, the distance between the demand device and the target device, or a combination thereof; wherein, when the data of the signal quality indicator is greater than or equal to a predetermined value, the acknowledgment returning step returns the acknowledgment information to the demand device; when the data of the signal quality index is less than the preset value, the confirmation returning step does not return the confirmation information to the demand device. The communication method for the Internet of Things as described in item 6 of the scope of the application, wherein in the confirmation return step, if a plurality of the target devices respectively return a plurality of the confirmation information to the demand device at the same time, the demand device will A message detection mechanism is executed for the confirmation messages to select a best one of the target devices to transmit the message. The communication method for the Internet of Things as described in item 9 of the patent application scope, wherein the information detection mechanism comprises a received signal strength indicator, a signal-to-noise ratio, a reference signal received strength, a block error rate, a throughput One of the amount, the distance between the demand device and each of the target devices, or a combination thereof. A communication system for the Internet of Things is used to transmit information to a network, the communication system for the Internet of Things comprises: a target device; and a demand device, the signal is connected to the target device, and the information is contained in the demand device, and the demand device includes: an antenna; an antenna switching circuit electrically connected to the antenna; and a control processor electrically connected to the antenna switching circuit, the control processor is based on a signal connection condition or a user demand condition Determine whether to activate a switching mode, if so, establish a first communication path between the demand device, the target device, a second base station and the network according to the switching mode, if not, establish the demand device, a first communication path a second communication path between the base station and the network; wherein the information is transmitted to the network through one of the first communication path and the second communication path; the switching mode searches for the nearby target device, and scan a target transmission frequency of the target device; the switching mode The formula calculates a target receiving frequency corresponding to the target transmitting frequency according to the target transmitting frequency and a frequency correspondence table, and the target transmitting frequency is different from the target receiving frequency; the switching mode is a required transmitting frequency of the required device and a required receiving frequency are respectively switched to the target receiving frequency and the target transmitting frequency, the required device transmits a packet signal with the target receiving frequency to the target device, and the target device returns a data size according to a data size of the packet signal. Confirm the message to the required device. The communication system for the Internet of Things as described in claim 11, wherein an operating frequency band of the antenna covers a Long Term Evolution (LTE) frequency band.

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