WO2017181589A1

WO2017181589A1 - Method for internet of things data transmission and internet of things terminal

Info

Publication number: WO2017181589A1
Application number: PCT/CN2016/100140
Authority: WO
Inventors: 赵永刚
Original assignee: 中兴通讯股份有限公司
Priority date: 2016-04-20
Filing date: 2016-09-26
Publication date: 2017-10-26
Also published as: CN107306440A; CN107306440B

Abstract

Provided in the present invention is a method for Internet of Things data transmission, comprising: sending data to be sent; determining whether the current communication state is a cell dedicated channel CELL_DCH mode; reducing the data transmission rate at which the data to be sent is sent if the current communication state is the CELL_DCH mode, so that the communication state is switched from the CELL_DCH mode to a cell forward access channel CELL_FACH mode. Further provided in the present invention is an Internet of Things terminal.

Description

IoT data transmission method and internet of things terminal

Technical field

The invention relates to an Internet of Things communication technology in the field of communication, in particular to an Internet of Things data transmission method and an Internet of Things terminal.

Background technique

With the development of computer technology, Internet technology and mobile communication technology, the Internet of Things has also been rapidly developed in various application fields. The Internet of Things refers to the terminal device uploading the collected information to the Internet through the communication network to realize intelligence. A network that identifies, locates, tracks, monitors, and manages.

In the prior art, since the Internet of Things terminal needs to upload less data to the Internet, the Internet of Things terminal only needs to establish a low-rate transmission channel with the Internet, and at the same time, since the Internet of Things terminal needs to continuously transmit information to the Internet for a long time, The standby time requirement for the Internet of Things terminal is high, which requires the terminal to establish a low-power connection with the Internet. Based on the above requirements, 3GPP (3rd Generation Partnership Project) has developed a low data rate transmission standard and has been incorporated into the LTE standard developed by 3GPP.

However, in the LTE network provided by each operator, there are some areas where only 3G signals are covered, or areas where the 4G signal is weak and the 3G signal is good, and the Internet of Things terminals in the area need to work under the 3G network. If the current amount of data to be transmitted by the IoT terminal is large, the 3G network may allocate a dedicated channel for the IoT terminal, so that the IoT terminal is in a high-traffic data transmission mode, which may cause the power consumption of the IoT terminal to be too high; At the same time, the process of data interaction between IoT terminals is intermittent. If the IoT terminal has been in a high-service data transmission mode, it is easy to waste communication resources.

Summary of the invention

In order to solve the existing technical problems, the embodiments of the present invention provide an Internet of Things data transmission method and an Internet of Things terminal, which can implement low-rate and low-power transmission of an IoT terminal under a 3G network, and save communication resources.

The technical solution of the embodiment of the present invention is implemented as follows:

In one aspect, an embodiment of the present invention provides an Internet of Things data transmission method, including:

Send data to be sent;

Determining whether the current communication state is a cell dedicated channel CELL_DCH mode;

If the current communication state is the CELL_DCH mode, the data transmission rate of transmitting the to-be-sent data is reduced, so that the communication state is switched from the CELL_DCH mode to the cell forward access channel CELL_FACH mode.

Optionally, after the determining whether the current communication state is the CELL_DCH mode, the method further includes:

If the current communication status is CELL_FACH mode, monitor the communication status;

Determining whether the communication status is switched from CELL_FACH mode to CELL_DCH mode;

If the communication state is switched from the CELL_FACH mode to the CELL_DCH mode, the data transmission rate is lowered, so that the communication state is switched from the CELL_DCH mode to the CELL_FACH mode.

Optionally, the sending the to-be-sent data includes:

Obtain a data rate threshold;

Obtaining the data transmission rate according to the data rate threshold;

Transmitting the data to be transmitted according to the data transmission rate.

Optionally, the sending the to-be-sent data according to the data transmission rate includes:

Decoding, according to the data transmission rate, the data to be transmitted into a plurality of data blocks for buffering, and the data amount of each data block is equal to the amount of data that can be sent per second defined by the data transmission rate;

Sending the to-be-sent data according to the data block.

Optionally, the switching the communication state from the CELL_DCH mode to the CELL_FACH mode includes:

Transmitting the to-be-sent data according to the reduced data transmission rate;

Determining whether the communication status is switched from CELL_DCH mode to CELL_FACH mode;

If the communication state is not switched from the CELL_DCH mode to the CELL_FACH mode, the data transmission rate continues to be lowered.

Optionally, after the determining whether the communication status is switched from the CELL_DCH mode to the CELL_FACH mode, the method further includes:

If the communication state has been switched from the CELL_DCH mode to the CELL_FACH mode, the data rate threshold is updated according to the reduced data transmission rate.

In another aspect, an embodiment of the present invention provides an Internet of Things terminal, including:

a sending unit, configured to send data to be sent;

a first determining unit, configured to determine whether the current communication state is a cell dedicated channel CELL_DCH mode;

The lowering unit is configured to reduce the data transmission rate of transmitting the to-be-sent data if the current communication state is the CELL_DCH mode, so that the communication state is switched from the CELL_DCH mode to the cell forward access channel CELL_FACH mode.

Optionally, the terminal further includes:

The monitoring unit is configured to monitor the communication state if the current communication state is the CELL_FACH mode;

a second determining unit, configured to determine whether the communication state is switched from the CELL_FACH mode to the CELL_DCH mode;

The reducing unit is further configured to reduce the data transmission rate if the communication state is switched from the CELL_FACH mode to the CELL_DCH mode, so that the communication state is switched from the CELL_DCH mode to the CELL_FACH mode.

Optionally, the sending unit is specifically configured to:

Obtain a data rate threshold;

Obtaining a data transmission rate according to the data rate threshold;

Optionally, the sending unit is specifically configured to:

Sending the to-be-sent data according to the data block.

Optionally, the reducing unit is specifically configured to:

Optionally, the terminal further includes:

And an updating unit, configured to update the data rate threshold according to the reduced data transmission rate if the communication state has been switched from the CELL_DCH mode to the CELL_FACH mode.

An embodiment of the present invention provides an Internet of Things data transmission method and an Internet of Things terminal. The method for transmitting an Internet of Things data includes: transmitting data to be sent; determining whether the current communication state is a CELL_DCH mode; and if the current communication state is a CELL_DCH mode, reducing Transmitting a data transmission rate of the data to be transmitted, so that the communication state is switched from the CELL_DCH mode to the CELL_FACH mode. Compared with the prior art, when the IoT terminal communicates under the 3G network When the state is CELL_DCH mode instead of CELL_FACH mode, the data transmission rate of the IoT terminal can be reduced, and the communication state of the IoT terminal is switched from the CELL_DCH mode to the CELL_FACH mode, so that the IoT terminal can always be in the CELL_FACH mode, and the 3G is realized. The low-rate and low-power data transmission of the IoT terminal under the network saves communication resources.

DRAWINGS

In the drawings, which are not necessarily to scale, the Like reference numerals with different letter suffixes may indicate different examples of similar components. The drawings generally illustrate the various embodiments discussed herein by way of example and not limitation.

1 is a schematic flowchart of an Internet of Things data transmission method according to an embodiment of the present invention;

2 is a schematic flowchart of an Internet of Things data transmission method according to an embodiment of the present invention;

3 is a schematic structural diagram of an Internet of Things terminal according to an embodiment of the present invention;

4 is a schematic structural diagram of another Internet of Things terminal according to an embodiment of the present invention;

FIG. 5 is a schematic structural diagram of still another object network terminal according to an embodiment of the present invention.

detailed description

The technical solutions in the embodiments of the present invention will be clearly and completely described in the following with reference to the accompanying drawings.

Embodiment 1

An embodiment of the present invention provides an Internet of Things data transmission method, which is applied to an Internet of Things terminal. As shown in FIG. 1 , the Internet of Things data transmission method includes:

Step 101: Send data to be sent.

For example, when the IoT terminal needs to send data to be sent, the data to be sent may be first divided into multiple data blocks for buffering, and one data block is read every second for transmission, and the data transmission of the data to be transmitted is sent at this time. The rate is the ratio of the data volume of the data block to the time of 1 second. The data amounts of the plurality of data blocks are equal.

Step 102: Determine whether the current communication state is a CELL_DCH mode.

For example, the mode of transmittable service data in the 3G network is defined as a CELL_DCH (Cell Dedicated Channel) mode and a CELL_FACH (Cell Forward Access Channel) mode. The CELL_DCH mode is a high-service data transmission mode. When the IoT terminal is in the CELL_DCH mode, the network allocates a dedicated transmission channel for the IoT terminal to transmit service data, so that the service data can be quickly transmitted; When the threshold is switched, the network can switch the IoT terminal to the CELL_FACH mode, release the dedicated channel allocated to the IoT terminal, and use the common channel to transmit the service data at a low data transmission rate. The service data rate of the IoT terminal is higher than the handover. When the threshold is reached, switch to the CELL_DCH mode and assign the dedicated channel again.

Specifically, the IoT terminal cannot know the handover threshold of the current access cell before sending the data to be sent, and thus cannot know whether the communication state is CELL_DCH mode or CELL_FACH mode when the data to be transmitted is sent according to the current data transmission rate. When the IoT terminal sends data to be sent, it can detect the current communication state in time, so that the current communication state is CELL_DCH mode, and the data transmission rate is adjusted in time.

Step 103: If the current communication state is the CELL_DCH mode, reduce the data transmission rate of sending the to-be-sent data, so that the communication state is switched from the CELL_DCH mode to the CELL_FACH mode.

For example, if the current communication state is CELL_DCH mode, the current data transmission rate of the Internet of Things terminal is large, which exceeds the handover threshold of the current cell. Therefore, the data transmission rate needs to be gradually reduced until the data transmission rate is smaller than the handover threshold of the current cell. Switching the communication state of the IoT terminal from CELL_DCH mode to CELL_FACH mode and keeping the speed low Rate low power transfer status.

In this way, when the communication state of the IoT terminal in the 3G network is CELL_DCH mode instead of CELL_FACH mode, the communication state of the IoT terminal can be switched from CELL_DCH mode to CELL_FACH mode by reducing the data transmission rate of the IoT terminal. The IoT terminal can always be in the CELL_FACH mode, realizing low-rate and low-power data transmission of the IoT terminal under the 3G network, and saving communication resources.

Further, if the current communication state is the CELL_FACH mode, the communication state of the Internet of Things terminal can be monitored in real time; whether the communication state is switched from the CELL_FACH mode to the CELL_DCH mode; if the communication state is switched from the CELL_FACH mode to the CELL_DCH mode, the data transmission rate is decreased. , so that the communication state is switched from the CELL_DCH mode to the CELL_FACH mode.

For example, if the current communication state is the CELL_FACH mode, the current data transmission rate of the Internet of Things terminal is small, and does not exceed the handover threshold of the current cell. Therefore, the data to be transmitted can be continuously transmitted using the current data transmission rate, but in actual applications, The 3G network covers a large number of cells, and the handover threshold of each cell is different. Some users have fewer users, so the handover threshold can be lower; some cells have more users, so the handover threshold is higher. If the IoT terminal performs cell handover when transmitting data using the same data transmission rate, it is likely to switch from a cell with a higher handover threshold to a cell with a lower handover threshold. The IoT terminal cell is in CELL_FACH mode before the cell handover, and may be after cell handover. The CELL_FACH mode is changed to the CELL_DCH mode, so the IoT terminal can monitor the current mode in real time to determine whether the current communication state is switched from the CELL_FACH mode to the CELL_DCH mode. If the current communication state has been switched from the CELL_FACH mode to the CELL_DCH mode, the current data transmission rate of the IoT terminal is large, which exceeds the handover threshold of the current cell. Therefore, the data transmission rate needs to be gradually reduced until the data transmission rate is smaller than the current cell handover. The threshold enables the communication state of the IoT terminal to be re-switched from the CELL_DCH mode to the CELL_FACH mode, and maintains the low-rate low-power transmission state.

Optionally, when sending data to be sent, the data rate threshold may be first obtained, and according to And the data rate threshold is obtained, and the data to be sent is sent according to the data transmission rate.

For example, the data rate threshold may be set according to an empirical value, indicating a threshold value of the rate when the IoT terminal switches from the CELL_FACH mode to the CELL_DCH mode or when the IoT terminal switches from the CELL_DCH mode to the CELL_FACH mode. At the time of initialization, the default data rate threshold may be preset in the IoT terminal. The data rate threshold may be the experience value of a person skilled in the art. When the Internet of Things terminal is used for the first time, the default can be read. Data rate threshold. In the process of using the Internet of Things terminal, since the IoT terminal may frequently switch between cells, the data rate threshold is dynamically changed. If the IoT terminal suddenly shuts down during use, it can be obtained after booting again. The data rate threshold at the last shutdown.

Optionally, in order to ensure that the IoT terminal continues to be in the low power consumption and low rate CELL_FACH mode in the 3G network, the data transmission rate of the IoT terminal needs to be maintained at a low level, so the data transmission is obtained according to the data rate threshold. At the rate, data can be sent at a data transmission rate less than or equal to the data rate threshold. Specifically, a rate rule may be set during initialization, where the rate rule indicates a relationship between a data transmission rate and a data rate threshold. For example, if the rate rule indicates that the data transmission rate is equal to the data rate threshold, if the data rate threshold is 100 k/s (thousands) In bytes/second, the data transmission rate is also 100k/s; or the rate rule indicates that the data transmission rate is 80% of the data rate threshold, and if the data rate threshold is 100k/s, the data transmission rate is 80k/s. Preferably, the data transmission rate is less than the data rate threshold.

For example, the data to be sent can be sent according to the obtained data transmission rate. For example, the data to be transmitted may be first divided into a plurality of data blocks according to the data transmission rate, and the data amount of each data block is equal to the amount of data that can be sent per second defined by the data transmission rate. And transmitting the to-be-sent data according to the data block. For example, if the data rate threshold is 100 k/s, after the data to be transmitted that needs to be sent is obtained, the data to be sent may be divided into data blocks less than or equal to 100 k for storage, and the specific division may be based on the above rate rule. When the rate rule indicates that the data transmission rate is equal to the data rate threshold, the data to be transmitted may be divided into data blocks equal to 100k for storage; when the rate rule indicates the number According to the transmission rate being 80% of the data rate threshold, the data to be transmitted can be divided into 80k data blocks for storage. At this point, the IoT terminal only needs to read one data block per second for transmission, which ensures that the transmission rate meets the requirements.

Optionally, if the current communication state has been switched from the CELL_FACH mode to the CELL_DCH mode, the data transmission rate may be first decreased, the data to be sent is sent according to the reduced data transmission rate, and then the communication state is determined to be switched from the CELL_DCH mode. In the CELL_FACH mode, if the communication state is not switched from the CELL_DCH mode to the CELL_FACH mode, the data transmission rate is continued to decrease until the current communication state is switched from the CELL_DCH mode to the CELL_FACH mode.

For example, the IoT terminal switches from the CELL_FACH mode to the CELL_DCH mode, indicating that the current data transmission rate of the IoT terminal is larger than the switching threshold of the current cell, and the object to be re-switched from the CELL_DCH mode to the CELL_FACH mode can reduce the object. The data transmission rate of the networked terminal, but the IoT terminal cannot know the handover threshold of the current cell, so the data transmission rate cannot be directly reduced to be less than or equal to the handover threshold of the cell. Therefore, in actual applications, the data transmission rate can be gradually reduced. Once, it is detected whether the communication state of the Internet of Things terminal is switched from the CELL_DCH mode to the CELL_FACH mode. If the communication state of the IoT terminal is still maintained in the CELL_DCH mode after the decrease, the data transmission rate is continuously lowered, and then the communication state of the Internet of Things terminal is re-detected. Until the current communication state is switched from CELL_DCH mode to CELL_FACH mode.

Further, if the current communication state has been switched from the CELL_DCH mode to the CELL_FACH mode, the data rate threshold is updated according to the reduced data transmission rate.

For example, when the IoT terminal re-switches from the CELL_DCH mode to the CELL_FACH mode, it indicates that the last reduced data transmission rate is less than or equal to the current cell handover threshold, and the last reduced data transmission rate enables the IoT terminal. Maintaining the CELL_FACH mode, the data rate threshold of the IoT terminal can be updated according to the last reduced data transmission rate, so that the next time the IoT terminal transmits the service data, the data transmission is obtained according to the updated data rate threshold. rate.

An embodiment of the present invention provides an Internet of Things data transmission method, including: transmitting data to be transmitted; determining whether a current communication state is a cell dedicated channel CELL_DCH mode; if the current communication state is a CELL_DCH mode, reducing transmission of the to-be-sent data The data transmission rate is such that the communication state is switched from the CELL_DCH mode to the cell forward access channel CELL_FACH mode. Compared with the prior art, when the communication state of the IoT terminal in the 3G network is CELL_DCH mode instead of CELL_FACH mode, the communication state of the IoT terminal can be switched from CELL_DCH mode to CELL_FACH by reducing the data transmission rate of the IoT terminal. The mode, in turn, enables the IoT terminal to always be in the CELL_FACH mode, realizing low-rate and low-power data transmission of the IoT terminal under the 3G network, and saving communication resources.

Embodiment 2

An embodiment of the present invention provides an Internet of Things data transmission method, which is applied to an Internet of Things terminal. As shown in FIG. 2, the method includes:

Step 201: Obtain a data rate threshold, and perform step 202.

For example, the IoT terminal can obtain a default data rate threshold or obtain a data rate threshold at the last shutdown.

Step 202: Cache the data to be sent according to the data rate threshold, and perform step 203.

For example, the data to be sent may be divided into a plurality of data blocks for storage, and the size of the data block may be adjusted according to a data rate threshold. For example, if the data rate threshold is 100 k/s, after the data to be transmitted that needs to be transmitted is acquired, the data to be transmitted may be divided into data blocks less than or equal to 100 k for storage. Specifically, the division can be performed according to the rate rule. Assume that the rate rule indicates that the data transmission rate is equal to the data rate threshold. In this case, the data to be transmitted can be divided into data blocks equal to 100k for storage; if the rate rule indicates that the data transmission rate is 80% of the data rate threshold, the data transmission rate can be sent. The data is divided into 80k data blocks for storage.

Step 203: Obtain a data transmission rate according to the data rate threshold, and perform step 204.

For example, the data transmission rate can be obtained according to a preset rate rule. Assuming a data rate threshold of 100 k/s, if the rate rule indicates that the data transmission rate is equal to the data rate threshold, then the data The transmission rate is also 100k/s; if the rate rule indicates that the data transmission rate is 80% of the data rate threshold, the data transmission rate is 80k/s. Preferably, the data transmission rate is less than the data rate threshold.

Step 204: Send the data to be sent according to the data transmission rate, and perform step 205.

For example, in order to satisfy the data transmission rate obtained according to the data rate threshold, the Internet of Things terminal can read one data block from the cache for transmission every second.

Step 205: Detect whether the current communication state is switched from the CELL_FACH mode to the CELL_DCH mode; if the current communication state has been switched from the CELL_FACH mode to the CELL_DCH mode, perform step 206; if the current communication state is not switched from the CELL_FACH mode to the CELL_DCH mode, execute Step 210.

For example, when the Internet of Things terminal starts to transmit service data, it may first detect whether the communication status is CELL_DCH mode, when the communication status is CELL_DCH mode, reduce the data transmission rate, and detect whether the terminal switches from CELL_DCH mode to CELL_FACH mode, if the terminal has When switching from CELL_DCH mode to CELL_FACH mode, the data to be transmitted is continuously transmitted according to the reduced data transmission rate. If the terminal does not switch from CELL_DCH mode to CELL_FACH mode, the data transmission rate continues to be reduced until the current communication state is switched from CELL_DCH mode to CELL_FACH. Mode; when the communication state is CELL_FACH mode, continuously monitor the communication state, and if it is detected that the communication state of the Internet of Things terminal changes, determine whether the IoT terminal is switched from the CELL_FACH mode to the CELL_DCH mode.

Step 206: Reduce the data transmission rate, and perform step 207.

For example, if the current communication state has been switched from the CELL_FACH mode to the CELL_DCH mode, the data transmission rate is large at this time, and the data transmission rate can be gradually reduced in order to make the IoT terminal switch back from the CELL_DCH mode back to the CELL_FACH mode. For example, the data transfer rate can be gradually reduced by a difference of 10 k/s. Assuming an initial data transmission rate of 100 k/s, the data rate after the first reduction is 90 k/s.

Step 207: Send the to-be-sent data according to the reduced data transmission rate, and perform step 208.

For example, after the data transmission rate is reduced, the buffered and unsent data to be transmitted may be re-divided according to the reduced data transmission rate, and divided into data blocks that match the reduced data transmission rate, so that the IoT terminal Reading a block of data for transmission in seconds can satisfy the reduced data transfer rate. Assuming that the reduced data transmission rate is 90 k/s, the buffered and unsent data to be transmitted can be divided into multiple 90 k data blocks for buffering, and the IoT terminal can read one data block per second for transmission. The data transmission rate of the IoT terminal is 90k/s.

Step 208: Detect whether the current mode is switched from the CELL_DCH mode to the CELL_FACH mode. If the current mode has been switched from the CELL_DCH mode to the CELL_FACH mode, step 209 is performed; if the CELL_DCH mode is not currently switched to the CELL_FACH mode, step 206 is performed.

For example, since the IoT terminal cannot obtain the handover threshold of the current cell, the data transmission rate cannot be directly reduced to be less than or equal to the handover threshold of the cell. Therefore, in actual applications, the data transmission rate can be gradually reduced, and each time the data transmission rate is decreased, the detection is performed. Whether the communication state of the Internet of Things terminal is switched from the CELL_DCH mode to the CELL_FACH mode. If the communication state of the IoT terminal is still maintained in the CELL_DCH mode after the decrease, the data transmission rate is continuously decreased, and then the communication state of the IoT terminal is re-detected until the current communication The state is switched from CELL_DCH mode to CELL_FACH mode.

Step 209: Update the data rate threshold according to the reduced data transmission rate, and perform step 202.

For example, if the current CELL_DCH mode is switched to the CELL_FACH mode, the data rate after the last reduction is less than the handover threshold of the current cell, and the data transmission rate after the last reduction can enable the IoT terminal to maintain the CELL_FACH mode. At this time, the data rate threshold of the Internet of Things terminal can be updated according to the last reduced data transmission rate, so that the next time the IoT terminal transmits the service data, the data transmission rate is obtained according to the updated data rate threshold.

Step 210: Continue to use the data transmission rate to send the to-be-sent data.

For example, if the current communication state of the IoT terminal is not switched from CELL_FACH mode In the CELL_DCH mode, the current data transmission rate of the Internet of Things terminal can enable the IoT terminal to maintain the CELL_FACH mode, continue to use the data transmission rate, and send the to-be-sent data.

It should be noted that the sequence of the steps of the method for transmitting the Internet of Things data provided by the embodiment of the present invention may be appropriately adjusted, and the steps may be correspondingly increased or decreased according to the situation, and any technical person skilled in the art may disclose the technical scope disclosed by the present invention. Within the scope of the present invention, the method of change can be easily conceived, and therefore will not be described again.

The embodiment of the invention provides an Internet of Things data transmission method. Compared with the prior art, if the communication state of the IoT terminal in the 3G network is switched from the CELL_FACH mode to the CELL_DCH mode, the data transmission rate of the Internet of Things terminal can be reduced. The communication state of the IoT terminal is switched from the CELL_DCH mode to the CELL_FACH mode, so that the IoT terminal can continue to be in the CELL_FACH mode, realizing the low-rate and low-power data transmission of the IoT terminal under the 3G network, thereby saving communication resources.

Embodiment 3

An embodiment of the present invention provides an Internet of Things terminal 30, as shown in FIG. 3, including:

The sending unit 301 is configured to send data to be sent.

The first determining unit 302 is configured to determine whether the current communication state is the CELL_DCH mode.

The lowering unit 303 is configured to reduce the data transmission rate of transmitting the to-be-sent data if the current communication state is the CELL_DCH mode, so that the communication state is switched from the CELL_DCH mode to the CELL_FACH mode.

Optionally, as shown in FIG. 4, the terminal 30 further includes:

The monitoring unit 304 is configured to monitor the communication state if the current communication state is the CELL_FACH mode;

The second determining unit 305 is configured to determine whether the communication state is switched from the CELL_FACH mode to the CELL_DCH mode;

The reducing unit 303 is further configured to reduce the data transmission rate if the communication state is switched from the CELL_FACH mode to the CELL_DCH mode, so that the communication state is switched from the CELL_DCH mode to the CELL_FACH mode.

Optionally, the sending unit 301 is specifically configured to: obtain a data rate threshold; obtain a data transmission rate according to the data rate threshold; and send the to-be-sent data according to the data transmission rate.

Optionally, the sending unit 301 is specifically configured to: divide the to-be-sent data into multiple data blocks for buffering according to the data transmission rate, and determine a data volume of each data block and the data transmission rate. The amount of data that can be transmitted per second is equal; the data to be transmitted is transmitted according to the data block.

Optionally, the reducing unit 303 is specifically configured to: send the to-be-transmitted data according to the reduced data transmission rate; determine whether the communication state is switched from the CELL_DCH mode to the CELL_FACH mode; if the communication state is not switched from the CELL_DCH mode to the CELL_FACH Mode, continue to reduce the data transmission rate until the current communication state is switched from CELL_DCH mode to CELL_FACH mode.

Optionally, as shown in FIG. 5, the terminal 30 further includes: an updating unit 306, configured to update the data rate according to the reduced data transmission rate if the communication state has been switched from the CELL_DCH mode to the CELL_FACH mode. Threshold.

It should be noted that, firstly, those skilled in the art can clearly understand that for the convenience and brevity of the description, the specific working process of the terminal and the unit described above can refer to the corresponding process in the foregoing method embodiment, where No longer.

Second, the first determining unit 302, the reducing unit 303, the monitoring unit 304, the second determining unit 305, and the updating unit 306 may each be a central processor located in the Internet of Things terminal 30. (Central Processing Unit, CPU), Microprocessor Unit (MPU), Digital Signal Processor (DSP), or Field Programmable Gate Array (FPGA). The cache unit 306 can be implemented by a memory located in the Internet of Things terminal 30. The transmitting unit 301 can be implemented by an antenna located in the Internet of Things terminal 30 and a driving circuit of the antenna.

An embodiment of the present invention provides an Internet of Things terminal, including: a sending unit, configured to send data to be sent. The first determining unit is configured to determine whether the current communication state is a CELL_DCH mode. The lowering unit is configured to reduce the data transmission rate of transmitting the to-be-sent data if the current communication state is the CELL_DCH mode, so that the communication state is switched from the CELL_DCH mode to the CELL_FACH mode. Compared with the prior art, when the communication state of the IoT terminal in the 3G network is CELL_DCH mode instead of CELL_FACH mode, the communication state of the IoT terminal can be switched from CELL_DCH mode to CELL_FACH by reducing the data transmission rate of the IoT terminal. The mode, in turn, enables the IoT terminal to always be in the CELL_FACH mode, realizing low-rate and low-power data transmission of the IoT terminal under the 3G network, and saving communication resources.

Embodiment 4

An embodiment of the present invention further provides an Internet of Things system, including an Internet of Things terminal;

The Internet of Things terminal is configured to acquire a data transmission rate according to a data rate threshold; send data to be sent according to a data transmission rate acquired according to a data rate threshold; determine whether the current communication state is switched from a CELL_FACH mode to a CELL_DCH mode; and if the current communication state The CELL_FACH mode has been switched to the CELL_DCH mode, and the data transmission rate is lowered, so that the communication state is switched from the CELL_DCH mode to the CELL_FACH mode.

In this way, when the IoT terminal of the IoT system switches from the CELL_FACH mode to the CELL_DCH mode under the 3G network, the communication state of the IoT terminal can be switched back from the CELL_DCH mode to the CELL_FACH by reducing the data transmission rate of the IoT terminal. The mode further enables the IoT terminal to continue to be in the CELL_FACH mode, realizing low-rate and low-power data transmission of the IoT terminal under the 3G network, and saving communication resources.

Those skilled in the art will appreciate that embodiments of the present invention can be provided as a method, system, or computer program product. Accordingly, the present invention can take the form of a hardware embodiment, a software embodiment, or a combination of software and hardware. Moreover, the invention can take the form of a computer program product embodied on one or more computer-usable storage media (including but not limited to disk storage and optical storage, etc.) including computer usable program code.

The present invention has been described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (system), and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flowchart illustrations and/or FIG. These computer program instructions can be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing device to produce a machine for the execution of instructions for execution by a processor of a computer or other programmable data processing device. Means for implementing the functions specified in one or more of the flow or in a block or blocks of the flow chart.

The computer program instructions can also be stored in a computer readable memory that can direct a computer or other programmable data processing device to operate in a particular manner, such that the instructions stored in the computer readable memory produce an article of manufacture comprising the instruction device. The apparatus implements the functions specified in one or more blocks of a flow or a flow and/or block diagram of the flowchart.

These computer program instructions can also be loaded onto a computer or other programmable data processing device such that a series of operational steps are performed on a computer or other programmable device to produce computer-implemented processing for execution on a computer or other programmable device. The instructions provide steps for implementing the functions specified in one or more of the flow or in a block or blocks of a flow diagram.

The above is only the preferred embodiment of the present invention and is not intended to limit the scope of the present invention.

Claims

An Internet of Things data transmission method includes:

Send data to be sent;

Determining whether the current communication state is a cell dedicated channel CELL_DCH mode;

If the current communication state is the CELL_DCH mode, the data transmission rate of transmitting the to-be-sent data is reduced, so that the communication state is switched from the CELL_DCH mode to the cell forward access channel CELL_FACH mode.
The method of claim 1, wherein after the determining whether the current communication state is a CELL_DCH mode, the method further comprises:

If the current communication status is CELL_FACH mode, monitor the communication status;

Determining whether the communication status is switched from CELL_FACH mode to CELL_DCH mode;

If the communication state is switched from the CELL_FACH mode to the CELL_DCH mode, the data transmission rate is lowered, so that the communication state is switched from the CELL_DCH mode to the CELL_FACH mode.
The method according to claim 1 or 2, wherein the transmitting the data to be transmitted comprises:

Obtain a data rate threshold;

Obtaining the data transmission rate according to the data rate threshold;

Transmitting the data to be transmitted according to the data transmission rate.
The method according to claim 3, wherein the transmitting the data to be transmitted according to the data transmission rate comprises:

Decoding, according to the data transmission rate, the data to be transmitted into a plurality of data blocks for buffering, and the data amount of each data block is equal to the amount of data that can be sent per second defined by the data transmission rate;

Sending the to-be-sent data according to the data block.
The method of claim 3 wherein said causing communication status is from Switching CELL_DCH mode to CELL_FACH mode includes:

Transmitting the to-be-sent data according to the reduced data transmission rate;

Determining whether the communication status is switched from CELL_DCH mode to CELL_FACH mode;

If the communication state is not switched from the CELL_DCH mode to the CELL_FACH mode, the data transmission rate continues to be lowered.
The method of claim 5, wherein after the determining whether the communication state is switched from the CELL_DCH mode to the CELL_FACH mode, the method further comprises:

If the communication state has been switched from the CELL_DCH mode to the CELL_FACH mode, the data rate threshold is updated according to the reduced data transmission rate.
An Internet of Things terminal, comprising:

a sending unit, configured to send data to be sent;

a first determining unit, configured to determine whether the current communication state is a cell dedicated channel CELL_DCH mode;

The lowering unit is configured to reduce the data transmission rate of transmitting the to-be-sent data if the current communication state is the CELL_DCH mode, so that the communication state is switched from the CELL_DCH mode to the cell forward access channel CELL_FACH mode.
The terminal of claim 7, wherein the terminal further comprises:

The monitoring unit is configured to monitor the communication state if the current communication state is the CELL_FACH mode;

a second determining unit, configured to determine whether the communication state is switched from the CELL_FACH mode to the CELL_DCH mode;

The reducing unit is further configured to reduce the data transmission rate if the communication state is switched from the CELL_FACH mode to the CELL_DCH mode, so that the communication state is switched from the CELL_DCH mode to the CELL_FACH mode.
The terminal according to claim 7 or 8, wherein the transmitting unit is further configured to:

Obtain a data rate threshold;

Obtaining a data transmission rate according to the data rate threshold;

Transmitting the data to be transmitted according to the data transmission rate.
The terminal according to claim 9, wherein the transmitting unit is further configured to:

Decoding, according to the data transmission rate, the data to be transmitted into a plurality of data blocks for buffering, and the data amount of each data block is equal to the amount of data that can be sent per second defined by the data transmission rate;

Sending the to-be-sent data according to the data block.
The terminal of claim 9, wherein the reducing unit is further configured to:

Transmitting the to-be-sent data according to the reduced data transmission rate;

Determining whether the communication status is switched from CELL_DCH mode to CELL_FACH mode;

If the communication state is not switched from the CELL_DCH mode to the CELL_FACH mode, the data transmission rate continues to be lowered.
The terminal of claim 11, wherein the terminal further comprises:

And an updating unit, configured to update the data rate threshold according to the reduced data transmission rate if the communication state has been switched from the CELL_DCH mode to the CELL_FACH mode.