CN108810971B - Internet of things data transmission method, internet of things terminal and computer readable storage medium - Google Patents

Abstract

The invention discloses an internet of things data transmission method, which comprises the following steps: after the power saving mode timer is overtime, counting the transmission information of the data packet in the current data transmission window; judging whether the network is congested in the current data transmission window according to the counted transmission information; and when the network is congested in the time data transmission window, adjusting the timing duration of the power saving mode timer. The invention also discloses an Internet of things terminal and a computer readable storage medium. The method and the device can solve the problem of network congestion and improve the transmission efficiency of the terminal of the Internet of things.

Description

Internet of Things data transmission method, Internet of Things terminal, and computer-readable storage medium

technical field

The present invention relates to the technical field of the Internet of Things, in particular to an Internet of Things data transmission method, an Internet of Things terminal and a computer-readable storage medium.

Background technique

With breakthroughs in core technologies such as network connections, cloud services, big data analysis, and low-cost sensors, IoT technology has entered a stage of rapid development. It is estimated that tens of billions of devices will be connected to the network in the Internet of Things era.

The communication between things does not always require the pursuit of high-speed bandwidth, and because of the particularity of the environment and the huge number of many devices, the power consumption required to support their communication is low, so the networking of the Internet of Things requires the choice of A network with low bandwidth, low power consumption and wide coverage is the most effective solution.

In fact, since many devices occupy one channel, the rate shared by each device is lower, and NB-IoT (Narrow band Internet of Things, cellular-based narrowband Internet of Things, or LPWA, low-power wide area network) The design of the special consideration is that it can work even when the signal strength is very low, which also has to be realized at the expense of speed. Therefore, when the signal strength is very low, each data interaction, such as base station access, bandwidth allocation, user data transmission and confirmation, needs to be repeated many times. For an IoT network with more than 50,000 connectable terminals in each cell, congestion caused by repeated data transmission by each terminal will have a great impact on user services.

In order to meet the requirements of NB-IOT access terminals for low power consumption and long standby time, 3GPP introduced the PSM (Power Saving Mode) function for NB-IoT in Rel-12. When the terminal is in the PSM state, it does not monitor paging and stops all access layer activities. Data can be transmitted when the terminal leaves the PSM state.

The scheme of prior art mainly is:

(1) During the process of attaching or TAU (Tracking Area Update, Tracking Area Update), the terminal negotiates with the MME (Mobility Management Entity, Mobility Management Entity) the timing length of the PSM timer.

(2) The MME returns a signaling response message, and starts a UE reachable timer on the MME side.

(3) The terminal receives the message of the PSM timer and starts the PSM timer. When the PSM timer is activated, the terminal enters the PSM state, and when the PSM timer expires, the terminal can transmit data.

However, since the timing length of the PSM timer is fixed after setting, for a large number of IoT terminals accessing the same network and the same service, such as IoT terminals for meter reading services, this will lead to a large number of IoT terminals The terminal performs data exchange services with the network at the same time, causing network congestion.

Contents of the invention

The main purpose of the present invention is to provide a data transmission method of the Internet of Things, an Internet of Things terminal and a computer-readable storage medium, aiming at solving the problem of network congestion and improving the transmission efficiency of the Internet of Things terminal.

In order to achieve the above object, the present invention provides a data transmission method of the Internet of Things, the data transmission method of the Internet of Things includes:

After the power-saving mode timer expires, count the transmission information of the data packets in the current data transmission window;

Judging whether the network is congested within the current data transmission window according to the statistical transmission information;

When the network is congested within the current data transmission window, the timing duration of the power saving mode timer is adjusted.

Optionally, the step of counting the transmission information of data packets in the current data transmission window includes:

Count the respective average sending rates of each batch of data packets within the current data transmission window, wherein each batch of data packets includes a preset number of data packets sent continuously.

Optionally, the step of judging whether the network is congested within the current data transmission window according to the statistical transmission information includes:

The average sending rate of a selected batch of data packets;

Comparing the selected first average sending rate with the second average sending rate of the previous batch of data packets;

When the first average sending rate is greater than the second average sending rate, add one to the preset flag value whose initial value is zero; when the first average sending rate is smaller than the second average sending rate, add The preset flag value is reduced by one;

Continue to select the average sending rate of a batch of data packets until the average sending rate of each batch of data packets is selected;

After the average sending rate of each batch of data packets is selected, it is judged whether the preset flag value is less than zero, wherein, when the preset flag value is less than zero, it is determined that the network is congested within the current data transmission window .

Optionally, the step of judging whether the network is congested within the current data transmission window according to the statistical transmission information includes:

Judging whether the average sending rate of any batch of data packets is lower than the average sending rate of the previous batch of data packets, wherein, if the judgment result is yes, it is determined that the network is congested within the current data transmission window.

Optionally, while decrementing the preset flag value by one, the following steps are also performed:

Increase the sending power of the data packet according to the preset step value.

Optionally, the Internet of Things data transmission method also includes:

When the power adjustment instruction sent by the network side is received, the sending power of the data packet is adjusted according to the power adjustment instruction.

Optionally, after the step of adjusting the timing duration of the power-saving mode timer, it further includes:

After the adjusted power-saving mode timer expires, send an attach request to the network side to establish a transmission channel with the network side;

After receiving the attach response returned by the network side after the transmission channel is established, the data packet sending operation starts.

Optionally, after the step of sending an attach request to the network side after the adjusted power-saving mode timer expires, the method further includes:

When the attach response returned by the network side is not received within the preset time period, the power saving mode timer is reset and starts counting.

Further, the present invention also provides an Internet of Things terminal, which includes:

A memory storing a data transmission program of the Internet of Things;

A processor configured to execute the Internet of Things data transmission program to achieve the following steps:

After the power-saving mode timer expires, count the transmission information of the data packets in the current data transmission window;

Judging whether the network is congested within the current data transmission window according to the statistical transmission information;

When the network is congested within the current data transmission window, the timing duration of the power saving mode timer is adjusted.

Further, the present invention also provides a computer-readable storage medium, on which an Internet of Things data transmission program is stored, and when the Internet of Things data transmission program is executed by a processor, the following steps are implemented:

After the power-saving mode timer expires, count the transmission information of the data packets in the current data transmission window;

Judging whether the network is congested within the current data transmission window according to the statistical transmission information;

When the network is congested within the current data transmission window, the timing duration of the power saving mode timer is adjusted.

The Internet of Things data transmission method, the Internet of Things terminal and the computer-readable storage medium proposed by the present invention realize the planned scheduling of the Internet of Things terminals by dynamically setting the timing of the Internet of Things terminals entering and exiting the power-saving mode, specifically in the Internet of Things terminals After the power-saving mode timer expires, the transmission information of the data packets in the data transmission window after the power-saving mode expires is counted, and according to the statistical results, it is judged whether the network is congested in the current data transmission window, and if so, the power-saving The timing length of the electric mode timer is adjusted to avoid network congestion and achieve the purpose of improving the transmission efficiency of IoT terminals.

Description of drawings

FIG. 1 is a schematic structural diagram of a first embodiment of an Internet of Things terminal according to the present invention;

Fig. 2 is a schematic flow chart of the first embodiment of the Internet of Things data transmission method of the present invention;

FIG. 3 is a schematic diagram of execution logic of the processor statistical data packet transmission information in the first embodiment of the Internet of Things data transmission method of the present invention;

FIG. 4 is a schematic diagram of execution logic of the processor-controlled data packet sending operation in the third embodiment of the IoT data transmission method of the present invention.

The realization of the purpose of the present invention, functional characteristics and advantages will be further described in conjunction with the embodiments and with reference to the accompanying drawings.

Detailed ways

It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

The main solution of the embodiment of the present invention is: by dynamically setting the timing of the Internet of Things terminal entering and exiting the power-saving mode, the planned scheduling of the Internet of Things terminal is realized, specifically after the power-saving mode timer of the Internet of Things terminal expires, through Make statistics on the transmission information of the data packets in the data transmission window after the power-saving mode expires, and judge whether the network is congested in the current data transmission window according to the statistical results, and if so, adjust the timing length of the power-saving mode timer, In order to avoid network congestion and achieve the purpose of improving the transmission efficiency of IoT terminals.

As shown in FIG. 1 , FIG. 1 is a schematic structural diagram of an IoT terminal in a hardware operating environment involved in the solution of the embodiment of the present invention.

As shown in FIG. 1 , the IoT terminal may include: a processor 1001 , such as a CPU, a network interface 1004 , a user interface 1003 , a memory 1005 , and a communication bus 1002 . Wherein, the communication bus 1002 is used to realize connection and communication between these components. The user interface 1003 may include a display screen (Display), an input unit such as a keyboard (Keyboard), and the optional user interface 1003 may also include a standard wired interface, a wireless interface, and the like. Optionally, the network interface 1004 may include a standard wired interface and a wireless interface (such as a Wi-Fi interface). The memory 1005 can be a high-speed RAM memory, or a stable memory (non-volatile memory), such as a disk memory. Optionally, the memory 1005 may also be a storage device independent of the aforementioned processor 1001 .

Those skilled in the art can understand that the structure of the Internet of Things terminal shown in Figure 1 does not constitute a limitation on the Internet of Things terminal, and may include more or less components than those shown in the illustration, or combine some components, or different components layout.

As shown in FIG. 1 , in the first embodiment of the Internet of Things terminal of the present invention, the memory 1005 as a computer storage medium may include an operating system, a network communication module, a user interface module, and an Internet of Things data transmission program.

In the Internet of Things terminal shown in Figure 1, the network interface 1004 is mainly used to connect to the background server and perform data communication with the background server; the user interface 1003 is mainly used to connect to the client (client) and perform data communication with the client; and The processor 1001 can be used to call the Internet of Things data transmission program stored in the memory 1005, and perform the following operations:

After the power-saving mode timer expires, count the transmission information of the data packets in the current data transmission window;

Judging whether the network is congested within the current data transmission window according to the statistical transmission information;

When the network is congested within the current data transmission window, the timing length of the power saving mode timer is adjusted.

Further, the processor 1001 can be used to call the Internet of Things data transmission program stored in the memory 1005, and also perform the following operations:

Count the respective average sending rates of each batch of data packets within the current data transmission window, wherein each batch of data packets includes a preset number of data packets sent continuously.

Further, the processor 1001 can be used to call the Internet of Things data transmission program stored in the memory 1005, and also perform the following operations:

The average sending rate of a selected batch of data packets;

Comparing the selected first average sending rate with the second average sending rate of the previous batch of data packets;

When the first average sending rate is greater than the second average sending rate, add one to the preset flag value whose initial value is zero, and subtract one from the preset flag value when the first average sending rate is smaller than the second average sending rate;

Continue to select the average sending rate of a batch of data packets until the average sending rate of each batch of data packets is selected;

After the average sending rate of each batch of data packets is selected, it is judged whether the preset flag value is less than zero, wherein, when the preset flag value is less than zero, it is determined that the network is congested within the current data transmission window.

Further, the processor 1001 can be used to call the Internet of Things data transmission program stored in the memory 1005, and also perform the following operations:

Judging whether the average sending rate of any batch of data packets is lower than the average sending rate of the previous batch of data packets, wherein, if the judgment result is yes, it is determined that the network is congested within the current data transmission window.

Further, the processor 1001 can be used to call the Internet of Things data transmission program stored in the memory 1005, and also perform the following operations:

Increase the sending power of the data packet according to the preset step value.

Further, the processor 1001 can be used to call the Internet of Things data transmission program stored in the memory 1005, and also perform the following operations:

When the power adjustment instruction sent by the network side is received, the sending power of the data packet is adjusted according to the received power adjustment instruction.

Further, the processor 1001 can be used to call the Internet of Things data transmission program stored in the memory 1005, and also perform the following operations:

After the adjusted power-saving mode timer expires, send an attach request to the network side to establish a transmission channel with the network side;

After receiving the attach response returned by the network side after the transmission channel is established, the data packet sending operation starts.

Further, the processor 1001 can be used to call the Internet of Things data transmission program stored in the memory 1005, and also perform the following operations:

When the attach response returned by the network side is not received within the preset time period, the power saving mode timer is reset and starts counting.

Further, the present invention also provides an Internet of Things data transmission method, which is applied to an Internet of Things terminal. Referring to FIG. 2, in the first embodiment of the Internet of Things data transmission method of the present invention, the Internet of Things data transmission method includes:

Step S10, counting the transmission information of the data packets in the current data transmission window after the power-saving mode timer expires;

Step S20, judging whether the network is congested within the current data transmission window according to the statistical transmission information;

Step S30, when the network is congested in the current data transmission window, adjust the timing duration of the power saving mode timer.

It should be noted that the power saving mode of the IoT terminal can be regarded as the deep sleep state of the IoT terminal. In the power saving mode, the IoT terminal is still registered on the network, but the signaling is unreachable, so that The IoT terminal stays in the deep sleep state for a longer time to save power.

In this embodiment, the IoT data transmission method is executed by the IoT terminal shown in FIG. 1. During specific execution, the processor 1001 detects whether the power-saving mode timer (not shown in FIG. 1) has timed out, specifically Detecting whether to receive a timer interrupt generated by the power saving mode timer after timeout for detection, wherein the processor 1001 determines the power saving mode when detecting the timer interrupt generated by the power saving mode timer after timeout Timer expired. For example, if the time duration of the power-saving mode timer is 5 minutes, when the power-saving mode timer reaches 5 minutes, a timer interrupt will be triggered and detected by the processor 1001 .

After the power saving mode timer expires, the IoT terminal starts to send data to the network side. In the current data transmission window when the IoT terminal sends data to the network side, the processor 1001 makes statistics on the transmission information of the data packets in the current data transmission window.

In this embodiment, step S10 includes:

Count the respective average sending rates of each batch of data packets within the current data transmission window, wherein each batch of data packets includes a preset number of data packets sent continuously.

Specifically, when the processor 1001 makes statistics on the transmission information of the data packets, it can make statistics on the average sending rate of the data packets, and in specific implementation, it can divide the data packets sent in the current data transmission window into multiple batches times, wherein each batch of data packets includes a preset number of data packets sent continuously, and then statistics are made on the respective average sending rates of each batch of data packets.

Please refer to Fig. 3, Fig. 3 is the implementation logic schematic diagram of processor 1001 statistical data packet transmission information, during specific implementation, as shown in Fig. 3:

(1) After the power-saving mode timer expires, the Internet of Things terminal is successfully connected to the Internet, and when there is an application program that needs to send data packets to the network side, it enters the activation state;

(2) Processor 1001 records the length of the data packet to be sent as L(i), and records the moment when the data packet starts to be sent;

(3) After the data packet is successfully sent, the processor 1001 records the time when the data packet is successfully sent, and subtracts the time when the data packet starts to be sent from the time when the data packet is successfully sent, and calculates the time from the beginning of sending the data packet to the time when the data packet is successfully sent. Time-consuming T(i);

(4) Calculate the sending rate Ni=L(i)/T(i) of the data packet, Ni reflects the sending efficiency of the data packet, and reflects higher sending efficiency compared to a larger value of Ni. Therefore, when other conditions are the same, the change trend of Ni reflects the congestion of the network;

(5) accumulatively record m (the number of data packets included in the aforementioned batch of data packets, that is, the aforementioned preset number, which can be set according to actual needs by those skilled in the art, and the present invention does not specifically limit) data packets Sending rate, find the average value N(avg)=(N1+...+Ni)/m of these m Ni, that is, calculate the average sending rate of a batch of data packets, for example, m is 3, N1=50kbs, N2 =55kbs, N3=60kbs, then calculate the average sending rate N(avg)=(50+55+60)/3=55(kbs) of the batch of 3 data packets, that is, 55kb size can be sent in 1 second data;

(6) Repeat the above steps (2) to (5) until the statistics of each batch of data packets in the current data transmission window are completed.

In this embodiment, step S20 includes:

The average sending rate of a selected batch of data packets;

Comparing the selected first average sending rate with the second average sending rate of the previous batch of data packets;

When the first average sending rate is greater than the second average sending rate, add one to the preset flag value whose initial value is zero, and subtract one from the preset flag value when the first average sending rate is smaller than the second average sending rate;

Continue to select the average sending rate of a batch of data packets until the average sending rate of each batch of data packets is selected;

After the average sending rate of each batch of data packets is selected, it is judged whether the preset flag value is less than zero, wherein, when the preset flag value is less than zero, it is determined that the network is congested within the current data transmission window.

Specifically, after the statistics are completed, the processor 1001 judges whether the network is congested within the current data transmission window according to the statistics results. During specific implementation, the processor 1001 selects the average sending rate of a batch of data packets. Preferably, the processor 1001 may refer to the batch sequence of each batch of data packets to select the average sending rate in sequence.

After selecting the average sending rate of a batch of data packets, the processor 1001 compares the selected first average sending rate with the second average sending rate of the previous batch of data packets; wherein, when the first average sending rate is greater than the first When the second average sending rate is used, the processor 1001 adds one to the preset flag value whose initial value is zero, and subtracts one from the preset flag value when the first average sending rate is less than the second average sending rate, for example, the preset flag value It is currently 0, the first average sending rate selected by the processor 1001 is 55kbps, and the second average sending rate of the previous batch is 60kbps, obviously, 55kbs<60kbs, the preset flag value minus one becomes "-1" ;For another example, the preset flag value is currently 0, the first average sending rate selected by the processor 1001 is 55kbps, and the second average sending rate of the previous batch is 50kbps, obviously, 55kbs>50kbs, the default flag value Adding one becomes "1".

After the comparison is completed, the processor 1001 continues to select the average sending rate of a batch of data packets until the average sending rate of each batch of data packets is selected;

After the average sending rate of each batch of data packets is selected, the processor 1001 judges the current value of the preset flag value, and specifically judges whether the preset flag value is less than zero, wherein, when the preset flag value is less than zero, It shows that in the current data transmission window of the network, the average sending rate of more batches of data packets shows a downward trend, and it can be determined that the network is congested in the current data transmission window.

When it is determined that the network is congested within the current data transmission window, the processor 1001 adjusts the timing duration of the power saving mode, including increasing or decreasing the timing duration of the power saving mode timer, so as to avoid network congestion.

During specific implementation, the processor 1001 may adjust the timing duration of the power-saving mode timer alternately, for example, increase the timing duration of the power-saving mode timer first, and then adjust the power-saving mode timer next time, that is, When the network is congested again in the data transmission window class, the timing length of the power saving mode timer is reduced. Wherein, the step value for increasing the timing duration and the step value for decreasing the timing duration may be the same or different.

The processor 1001 may also continuously increase the timing duration of the power saving mode timer, and after increasing the timing duration of the power saving mode timer to a preset duration, reset the timer of the power saving mode timer to an initial duration, Such as reciprocating. For example, the initial duration of the timing duration of the power-saving mode timer is 5 minutes, the preset duration is 10 minutes, and the step size of the duration adjustment is 30 seconds. The processor 1001 adjusts the timing duration of the power-saving mode timer to 5 minutes and 30 seconds. When the timing duration of the power-saving mode timer is 10 minutes and the network is congested again within the data transmission window, the processor 1001 switches the power-saving mode timer to 5 minutes and 30 seconds. The timing duration of the timer is reset from 10 minutes to 5 minutes.

The processor 1001 can also continuously increase the timing duration of the power-saving mode timer. For example, the initial duration of the timing duration of the power-saving mode timer is 5 minutes, and the step size of the duration adjustment is 30 seconds. When congestion occurs within the data transmission window, the processor increases the timing duration of the power saving mode timer by 30 seconds.

The processor 1001 may also continuously increase the timing duration of the power saving mode timer, and after increasing the timing duration of the power saving mode timer to a preset duration, continue to decrease the timing duration of the power saving mode timer until the timing is reduced. After the initial duration of the power-saving mode timer is reduced, the timing duration is increased again, and so on. For example, the initial duration of the timing duration of the power-saving mode timer is 5 minutes, the preset duration is 10 minutes, and the step size of the duration adjustment is 30 seconds. The processor 1001 adjusts the timing duration of the power-saving mode timer to 5 minutes and 30 seconds. When the timing duration of the power-saving mode timer is adjusted to 10 minutes, and the network is congested again within the data transmission window, the processor 1001 will save power. The timing duration of the electric mode timer is adjusted from 10 minutes to 9 minutes and 30 seconds, until the timing duration is reduced to 5 minutes, and then increased again.

Optionally, in an embodiment, step S20 includes:

Judging whether the average sending rate of any batch of data packets is lower than the average sending rate of the previous batch of data packets, wherein, if the judgment result is yes, it is determined that the network is congested within the current data transmission window.

Optionally, in an embodiment, when the processor 1001 collects statistics on the transmission information of the data packets, it specifically counts the cumulative number of resends of the data packets;

When judging whether the network is congested within the data transmission window, the processor 1001 can judge whether the cumulative number of retransmissions of the data packet is greater than or equal to the preset number of times (the specific value can be set by those skilled in the art according to actual needs, and the present invention does not Make specific restrictions), if it is determined that the network is congested within the current data transmission window, the timing length of the power saving mode timer needs to be adjusted.

Optionally, in one embodiment, when the processor 1001 collects statistics on the transmission information of the data packets, it specifically counts the transmission failure rate of the data packets;

When judging whether the network is congested within the data transmission window, the processor 1001 can judge whether the statistical data packet transmission failure rate is greater than or equal to the preset failure rate (the specific value can be set by those skilled in the art according to actual needs, the present invention No specific limitation), if it is determined that the network is congested within the current data transmission window, the timing duration of the power saving mode timer needs to be adjusted.

Optionally, in an embodiment, when the processor 1001 collects statistics on the transmission information of the data packets, it may divide the data packets sent within the current data transmission window into multiple batches, wherein each batch of data packets includes Continuously sent, the preset number of data packets, and then make statistics on the average time-consuming of each unit length data packet sending time of each batch of data packets. In specific implementation,

(1) After the power-saving mode timer expires, the Internet of Things terminal is successfully connected to the Internet, and when there is an application program that needs to send data packets to the network side, it enters the activation state;

(2) Processor 1001 records the length of the data packet to be sent as L(i), and records the moment when the data packet starts to be sent;

(3) After the data packet is successfully sent, the processor 1001 records the time when the data packet is successfully sent, and subtracts the time when the data packet starts to be sent from the time when the data packet is successfully sent, and calculates the time from the beginning of sending the data packet to the time when the data packet is successfully sent. Time-consuming T(i);

(4) Calculate the transmission time of data packets of unit length Mi=T(i)/L(i), Mi reflects the transmission efficiency of data packets of unit length, compared to the larger value of Mi, it reflects the low sending efficiency. Therefore, when other conditions are the same, the change trend of Mi reflects the congestion of the network;

(5) accumulatively record m (the number of data packets included in the aforementioned batch of data packets, that is, the aforementioned preset number, which can be set according to actual needs by those skilled in the art, and the present invention does not specifically limit) data packets Sending rate, find the average value M(avg)=(M1+...+Mi)/m of these m Mi, that is, calculate the average time-consuming of sending a unit-length data packet of a batch of data packets, for example, m is 3, M1=50s/Mb, M2=55s/Mb, M3=60s/Mb, then calculate the average time-consuming M(avg)=(50 +55+60)/3=55(s/Mb), that is, it takes 55 seconds to send a 1Mb data packet;

(6) Repeat the above steps (2) to (5) until the statistics of each batch of data packets in the current data transmission window are completed.

After the statistics are completed, the processor 1001 judges whether the network is congested within the current data transmission window according to the statistics results. During specific implementation, the processor 1001 selects the average time-consuming time spent per unit length of data packets in a batch of data packets. Preferably, the processor 1001 can refer to the batch sequence of each batch of data packets to sequentially perform the average sending rate selected.

After selecting the average time-consuming of a batch of data packets, the processor 1001 compares the selected first average time-consuming with the second average time-consuming of the previous batch of data packets; wherein, when the first average time-consuming is greater than the second When the second average time-consuming, the processor 1001 subtracts one from the preset flag value whose initial value is zero, and adds one to the preset flag value when the first average time-consuming is less than the second average time-consuming, for example, the preset flag value is currently 0, the first average time consumption selected by processor 1001 is 55s/Mb, the second average time consumption of the previous batch is 60s/Mb, obviously, 55s/Mb<60s/Mb, add one to the preset flag value Change to "1"; for another example, the preset flag value is currently 0, the first average time-consuming selected by the processor 1001 is 55s/Mb, and the second average time-consuming of the previous batch is 50s/Mb, obviously, 55s/Mb>50s/Mb, the preset flag value will be reduced by one to "-1".

After the comparison is completed, the processor 1001 continues to select the average time consumption of a batch of data packets until the average time consumption of each batch of data packets is selected;

After the average time consumption of each batch of data packets is selected, the processor 1001 judges the current value of the preset flag value, and specifically judges whether the preset flag value is less than zero, wherein, when the preset flag value is less than zero, It shows that in the current data transmission window of the network, the average time consumption of more batches of data packets shows an increasing trend, and it can be determined that the network is congested in the current data transmission window.

The Internet of Things data transmission method proposed by the present invention realizes the planned scheduling of the Internet of Things terminals by dynamically setting the timing for the Internet of Things terminals to enter and exit the power-saving mode, specifically after the power-saving mode timer of the Internet of Things terminals expires, through Make statistics on the transmission information of the data packets in the data transmission window after the power-saving mode expires, and judge whether the network is congested in the current data transmission window according to the statistical results, and if so, adjust the timing length of the power-saving mode timer, In order to avoid network congestion and achieve the purpose of improving the transmission efficiency of IoT terminals.

Further, based on the first embodiment, a second embodiment of the IoT data transmission method of the present invention is proposed. In this embodiment, when the first average sending rate is greater than the second average sending rate, the initial value is zero While the value of the preset flag is decreased by one, the following steps are also performed:

Increase the sending power of the data packet according to the preset step value.

It should be noted that, on the basis of the foregoing first embodiment, this embodiment adds an operation of adjusting the sending power of the data packet.

Those skilled in the art can understand that, when other conditions are the same, the greater the transmission power, the higher the transmission efficiency. Therefore, in the embodiment of the present invention, when the statistical average transmission rate reflects the situation that the transmission efficiency is reduced, increasing the transmission power of the IoT terminal can increase the transmission efficiency.

In this embodiment, after the processor 1001 completes the condition of a batch of data packets, the average sending rate of the current statistical batch of data packets is selected, and after the average sending rate of the current batch of statistical batch data packets is selected, , compare the selected first average sending rate with the second average sending rate of the last batch of data packets. If the first average sending rate is lower than the second average sending rate, it means that the transmission efficiency is decreasing. At this time, it is necessary to increase The transmission power of large data packets to increase transmission efficiency. Specifically, while subtracting one from the preset flag value, the processor 1001 increases the transmission power of the data packet according to the preset step value, wherein, the present invention does not specifically limit the value of the preset step value, which can be determined by Those skilled in the art make settings according to actual needs.

Further, in this embodiment, the Internet of Things data transmission method also includes:

When the power adjustment instruction sent by the network side is received, the sending power of the data packet is adjusted according to the received power adjustment instruction.

It should be noted that, in this embodiment, in order to avoid unlimited increase of the transmit power of the IoT terminal, the network side also cooperates to adjust the transmit power of the IoT terminal.

During specific implementation, the network side makes statistics on the failure rate of the data packets sent by the Internet of Things terminal, and compares the statistical failure rate with the preset failure rate, wherein, when the statistical failure rate is greater than the preset failure rate, the network side Generate a power adjustment instruction instructing the Internet of Things terminal to increase the transmission power, and when the statistical failure rate is less than the preset failure rate, the network side generates a power adjustment instruction instructing the Internet of Things terminal to reduce the transmission power.

After generating the power adjustment instruction, the network side sends the generated power adjustment instruction to the IoT terminal.

Correspondingly, after the IoT terminal receives the power adjustment instruction sent by the network side, the processor 1001 increases or decreases the transmission power according to the instruction of the power adjustment instruction.

Optionally, in one embodiment, after the processor 1001 completes the conditions of each batch of data packets, it selects the average time-consuming time of the current statistical batch, and selects the average time-consuming time of the current batch of statistical batches. After hours, compare the selected first average time-consuming with the second average time-consuming of the last batch of data packets. If the first average time-consuming is greater than the second average time-consuming, it means that the transmission efficiency is decreasing. At this time It is necessary to increase the transmission power of the data packet to increase the transmission efficiency. Specifically, while subtracting one from the preset flag value, the processor 1001 increases the transmission power of the data packet according to the preset step value, wherein, the present invention does not specifically limit the value of the preset step value, which can be determined by Those skilled in the art make settings according to actual needs.

Further, based on the first or second embodiment, a third embodiment of the Internet of Things data transmission method of the present invention is proposed. In this embodiment, after step S30, it also includes:

After the adjusted power-saving mode timer expires, send an attach request to the network side to establish a transmission channel with the network side;

When the attachment response returned after the network side establishes the transmission channel is received, the sending operation of the data packet is started;

When the attach response returned by the network side is not received within the preset time period, the power saving mode timer is reset and starts counting.

It should be noted that, on the basis of the foregoing embodiments, this embodiment adds a description about the operation of sending a data packet.

Please refer to FIG. 4. FIG. 4 is a schematic diagram of execution logic of the processor 1001 controlling the data packet sending operation. During specific implementation, as shown in FIG. 4:

(1) All data packets in the current data transmission window have been sent;

(2) The processor 1001 determines whether the network is congested in the current data transmission window according to the statistical transmission information, and if so, adjusts the timing duration of the power-saving mode timer;

(3) The adjusted power-saving mode timer starts counting, the IoT terminal enters the power-saving mode, waits for the power-saving mode timer to expire, and after the power-saving mode timer expires, sends an attach request to the network side to establish a connection with the power-saving mode Transmission channels between network sides;

(4) The network side receives the attachment request of the terminal, and compares the number of IoT terminals already connected to the network with the upper limit of the number of IoT terminals allowed by the network;

(5) If the comparison result of step (4) is less than, then the network side confirms that the current network capacity can meet the requirements, then responds to the attachment request of the IoT terminal, establishes a transmission channel with the IoT terminal, and returns an attachment response, indicating that it can Start sending data packets;

(6) If the comparison size of step (4) is greater than or equal to, then the network side confirms that the current network is in a congested state, and then rejects the attachment request of the IoT terminal, that is, refuses to establish a transmission channel with the IoT terminal;

(7) The processor 1001 detects whether the network side returns an attach response, and when receiving the attach response returned after the network side establishes the transmission channel, starts sending the data packet through the application program that needs to send the data packet Operation; if no attachment response returned by the network side is received within the preset time period (the present invention does not specifically limit the value of the preset time period, which can be set by those skilled in the art according to actual needs), the processor 1001 Determine the current congestion of the network, reset the power-saving mode timer to avoid network congestion, start timing, and repeat the above steps until the next time the power-saving mode timer times out.

Further, the present invention also provides a computer-readable storage medium. In an embodiment, the computer-readable storage medium stores an Internet of Things data transmission program, and when the Internet of Things data transmission program is executed by the processor 1001, the following implementations are implemented: operate:

After the power-saving mode timer expires, count the transmission information of the data packets in the current data transmission window;

Judging whether the network is congested within the current data transmission window according to the statistical transmission information;

When the network is congested within the current data transmission window, the timing length of the power saving mode timer is adjusted.

Further, when the aforementioned Internet of Things data transmission program is executed by the processor 1001, the following operations are also realized:

Count the respective average sending rates of each batch of data packets within the current data transmission window, wherein each batch of data packets includes a preset number of data packets sent continuously.

Further, when the aforementioned Internet of Things data transmission program is executed by the processor 1001, the following operations are also realized:

The average sending rate of a selected batch of data packets;

Comparing the selected first average sending rate with the second average sending rate of the previous batch of data packets;

When the first average sending rate is greater than the second average sending rate, add one to the preset flag value whose initial value is zero, and subtract one from the preset flag value when the first average sending rate is smaller than the second average sending rate;

Continue to select the average sending rate of a batch of data packets until the average sending rate of each batch of data packets is selected;

After the average sending rate of each batch of data packets is selected, it is judged whether the preset flag value is less than zero, wherein, when the preset flag value is less than zero, it is determined that the network is congested within the current data transmission window.

Further, when the aforementioned Internet of Things data transmission program is executed by the processor 1001, the following operations are also realized:

Judging whether the average sending rate of any batch of data packets is lower than the average sending rate of the previous batch of data packets, wherein, if the judgment result is yes, it is determined that the network is congested within the current data transmission window.

Further, when the aforementioned Internet of Things data transmission program is executed by the processor 1001, the following operations are also realized:

Increase the sending power of the data packet according to the preset step value.

Further, when the aforementioned Internet of Things data transmission program is executed by the processor 1001, the following operations are also realized:

When the power adjustment instruction sent by the network side is received, the sending power of the data packet is adjusted according to the received power adjustment instruction.

Further, when the aforementioned Internet of Things data transmission program is executed by the processor 1001, the following operations are also realized:

After the adjusted power-saving mode timer expires, send an attach request to the network side to establish a transmission channel with the network side;

After receiving the attach response returned by the network side after the transmission channel is established, the data packet sending operation starts.

Further, when the aforementioned Internet of Things data transmission program is executed by the processor 1001, the following operations are also realized:

When the attach response returned by the network side is not received within the preset time period, the power saving mode timer is reset and starts counting.

It should be noted that, in this document, the term "comprising", "comprising" or any other variation thereof is intended to cover a non-exclusive inclusion such that a process, method, article or apparatus comprising a set of elements includes not only those elements, It also includes other elements not expressly listed, or elements inherent in the process, method, article, or device. Without further limitations, an element defined by the phrase "comprising a ..." does not preclude the presence of additional identical elements in the process, method, article, or apparatus comprising that element.

The serial numbers of the above embodiments of the present invention are for description only, and do not represent the advantages and disadvantages of the embodiments.

Through the description of the above embodiments, those skilled in the art can clearly understand that the methods of the above embodiments can be implemented by means of software plus a necessary general-purpose hardware platform, and of course also by hardware, but in many cases the former is better implementation. Based on such an understanding, the technical solution of the present invention can be embodied in the form of a software product in essence or the part that contributes to the prior art, and the computer software product is stored in a storage medium (such as ROM/RAM) , magnetic disk, optical disk), including several instructions to make a terminal (which can be a mobile phone, a computer, a server, an air conditioner, or a network device, etc.) execute the methods described in various embodiments of the present invention.

Embodiments of the present invention have been described above in conjunction with the accompanying drawings, but the present invention is not limited to the above-mentioned specific implementations, and the above-mentioned specific implementations are only illustrative, rather than restrictive, and those of ordinary skill in the art will Under the enlightenment of the present invention, many forms can also be made without departing from the gist of the present invention and the protection scope of the claims, and these all belong to the protection of the present invention.

Claims (8)

1. The data transmission method of the Internet of things is characterized by comprising the following steps of:

after the power saving mode timer is overtime, counting the transmission information of the data packet in the current data transmission window;

judging whether the network is congested in the current data transmission window according to the counted transmission information;

when the network is congested in the time data transmission window, the timing duration of the power saving mode timer is adjusted,

the step of counting the transmission information of the data packet in the current data transmission window comprises the following steps:

counting the average sending rate of each batch of data packets in the current data transmission window, wherein each batch of data packets comprises a preset number of data packets which are continuously sent;

the step of judging whether the network is congested in the current data transmission window according to the counted transmission information comprises the following steps:

selecting the average sending rate of a batch of data packets;

comparing the selected first average sending rate with the second average sending rate of the data packets of the previous batch;

when the first average sending rate is larger than the second average sending rate, adding one to a preset mark value with an initial value of zero, and when the first average sending rate is smaller than the second average sending rate, subtracting one to the preset mark value;

continuously selecting the average sending rate of the data packets of one batch until the average sending rate of the data packets of each batch is selected;

and after the average sending rate of the data packets of each batch is selected, judging whether the preset mark value is smaller than zero, wherein when the preset mark value is smaller than zero, determining that the network is congested in the time data transmission window.

2. The method for data transmission of the internet of things according to claim 1, wherein the step of determining whether congestion occurs in the network within the current data transmission window according to the counted transmission information comprises:

and judging whether the average sending rate of any batch of data packets is smaller than the average sending rate of the last batch of data packets, wherein when the judgment result is yes, determining that the network is congested in the current data transmission window.

3. The internet of things data transmission method according to claim 1, wherein the preset flag value is subtracted by one, and the following steps are further performed:

and increasing the transmission power of the data packet according to the preset step value.

4. The internet of things data transmission method according to claim 3, further comprising:

when a power adjustment instruction sent by a network side is received, the sending power of a data packet is adjusted according to the power adjustment instruction.

5. The method for data transmission of the internet of things according to any one of claims 1 to 4, further comprising, after the step of adjusting the timing duration of the power saving mode timer:

after the power saving mode timer after adjustment is overtime, an attachment request is sent to a network side so as to establish a transmission channel with the network side;

and when receiving the returned attachment response after the network side establishes the transmission channel, starting the sending operation of the data packet.

6. The method for data transmission of internet of things according to claim 5, wherein after the step of sending an attach request to the network side after the power saving mode timer after the adjustment expires, further comprising:

and when the attach response returned by the network side is not received within the preset time period, resetting the power saving mode timer and starting timing.

7. The utility model provides an thing networking terminal which characterized in that, thing networking terminal includes:

a memory storing a data transmission program of the internet of things;

a processor configured to execute the internet of things data transmission program to implement the steps of the internet of things data transmission method of any one of claims 1 to 6.

8. A computer-readable storage medium, wherein an internet of things data transmission program is stored on the computer-readable storage medium, which when executed by a processor, implements the steps of the internet of things data transmission method according to any one of claims 1 to 6.

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