CN107306440B - Internet of things data transmission method and Internet of things terminal - Google Patents

Internet of things data transmission method and Internet of things terminal Download PDF

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Publication number
CN107306440B
CN107306440B CN201610248495.9A CN201610248495A CN107306440B CN 107306440 B CN107306440 B CN 107306440B CN 201610248495 A CN201610248495 A CN 201610248495A CN 107306440 B CN107306440 B CN 107306440B
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cell
data
mode
communication state
data transmission
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CN107306440A (en
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赵永刚
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ZTE Corp
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ZTE Corp
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Priority to PCT/CN2016/100140 priority patent/WO2017181589A1/en
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04—TPC
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/02—Power saving arrangements
    • H04W52/0209—Power saving arrangements in terminal devices
    • H04W52/0251—Power saving arrangements in terminal devices using monitoring of local events, e.g. events related to user activity
    • H04W52/0258—Power saving arrangements in terminal devices using monitoring of local events, e.g. events related to user activity controlling an operation mode according to history or models of usage information, e.g. activity schedule or time of day
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04—TPC
    • H04W52/18—TPC being performed according to specific parameters
    • H04W52/26—TPC being performed according to specific parameters using transmission rate or quality of service QoS [Quality of Service]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Quality & Reliability (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

The embodiment of the invention discloses a data transmission method of an Internet of things, which comprises the following steps: sending data to be sent; determining whether the current communication state is a CELL dedicated channel CELL _ DCH mode; and if the current communication state is in a CELL _ DCH mode, reducing the data transmission rate of the data to be sent, so that the communication state is switched from the CELL _ DCH mode to a CELL forward access channel CELL _ FACH mode. Further, the embodiment of the invention also discloses an Internet of things terminal.

Description

Internet of things data transmission method and Internet of things terminal
Technical Field
The invention relates to the communication technology of the Internet of things in the communication field, in particular to a data transmission method of the Internet of things and a terminal of the Internet of things.
Background
With the development of computer technology, internet technology and mobile communication technology, the internet of things, which is a network in which terminal devices upload acquired information to the internet through a communication network to realize intelligent identification, positioning, tracking, monitoring and management, has been rapidly developed in various application fields.
In the prior art, the internet of things terminal needs to upload less data to the internet, so that the internet of things terminal only needs to establish a low-rate transmission channel with the internet, and meanwhile, the internet of things terminal needs to continuously send information to the internet for a long time, so that the standby time requirement on the internet of things terminal is high, and the terminal needs to establish low-power-consumption connection with the internet. Based on the above requirements, 3GPP (3rd Generation Partnership Project) has specified a low data rate transmission standard, and is currently incorporated into the LTE standard specified by 3 GPP.
However, in the LTE network provided by each operator, there are some areas covered by only 3G signals, or areas where 4G signals are weak and 3G signals are good, and the terminal of the internet of things in the area needs to operate under the 3G network. If the data volume required to be transmitted by the current internet of things terminal is large, the 3G network may allocate a special channel to the internet of things terminal, so that the internet of things terminal is in a high-service data transmission mode, and the power consumption of the internet of things terminal is overhigh; meanwhile, the data interaction process of the terminal of the internet of things is intermittent, and if the terminal of the internet of things is always in a high-service data transmission mode, communication resources are easily wasted.
Disclosure of Invention
In order to solve the existing technical problems, 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 the internet of things terminal in a 3G network, and save communication resources.
In order to achieve the above purpose, the technical solution of the embodiment of the present invention is realized as follows:
in one aspect, an embodiment of the present invention provides a data transmission method for an internet of things, including:
sending data to be sent;
determining whether the current communication state is a CELL dedicated channel CELL _ DCH mode;
and if the current communication state is in a CELL _ DCH mode, reducing the data transmission rate of the data to be sent, so that the communication state is switched from the CELL _ DCH mode to a CELL forward access channel CELL _ FACH mode.
Optionally, after determining whether the current communication state is the CELL _ DCH mode, the method further includes:
if the current communication state is the CELL _ FACH mode, monitoring the communication state;
determining whether a communication state is switched from a CELL _ FACH mode to a CELL _ DCH mode;
and if the communication state is switched from the CELL _ FACH mode to the CELL _ DCH mode, reducing the data transmission rate, so that the communication state is switched from the CELL _ DCH mode to the CELL _ FACH mode.
Optionally, the sending data to be sent includes:
acquiring a data rate threshold;
acquiring the data transmission rate according to the data rate threshold;
and sending the data to be sent according to the data transmission rate.
Optionally, the sending the data to be sent according to the data transmission rate includes:
dividing the data to be sent into a plurality of data blocks for caching according to the data transmission rate, wherein the data volume of each data block is equal to the data volume which can be sent every second and is limited by the data transmission rate;
and sending the data to be sent according to the data block.
Optionally, the causing of the communication state to switch from the CELL _ DCH mode to the CELL _ FACH mode includes:
sending the data to be sent according to the reduced data transmission rate;
determining whether a communication state is switched from a CELL _ DCH mode to a CELL _ FACH mode;
and if the communication state is not switched from the CELL _ DCH mode to the CELL _ FACH mode, continuously reducing the data transmission rate.
Optionally, after determining whether the communication state is switched from the CELL _ DCH mode to the CELL _ FACH mode, the method further includes:
and if the communication state is switched from the CELL _ DCH mode to the CELL _ FACH mode, updating the data rate threshold according to the reduced data transmission rate.
On the other hand, 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 determination unit, configured to determine whether a current communication state is a CELL dedicated channel CELL _ DCH mode;
and the reducing unit is used for reducing the data transmission rate of the data to be sent if the current communication state is in the CELL _ DCH mode, so that the communication state is switched from the CELL _ DCH mode to the CELL _ FACH mode of the CELL forward access channel.
Optionally, the terminal further includes:
the monitoring unit is used for monitoring the communication state if the current communication state is the CELL _ FACH mode;
a second determination unit configured to determine whether a 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:
acquiring a data rate threshold;
acquiring a data transmission rate according to the data rate threshold;
and sending the data to be sent according to the data transmission rate.
Optionally, the sending unit is specifically configured to:
dividing the data to be sent into a plurality of data blocks for caching according to the data transmission rate, wherein the data volume of each data block is equal to the data volume which can be sent every second and is limited by the data transmission rate;
and sending the data to be sent according to the data block.
Optionally, the reducing unit is specifically configured to:
sending the data to be sent according to the reduced data transmission rate;
determining whether a communication state is switched from a CELL _ DCH mode to a CELL _ FACH mode;
and if the communication state is not switched from the CELL _ DCH mode to the CELL _ FACH mode, continuously reducing the data transmission rate.
Optionally, the terminal further includes:
and the updating unit is used for updating the data rate threshold according to the reduced data transmission rate if the communication state is switched from the CELL _ DCH mode to the CELL _ FACH mode.
The embodiment of the invention provides an Internet of things data transmission method and an Internet of things terminal, wherein the Internet of things data transmission method comprises the following steps: sending data to be sent; determining whether the current communication state is a CELL _ DCH mode; and if the current communication state is the CELL _ DCH mode, reducing the data transmission rate of the data to be sent, 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 terminal of the internet of things in the 3G network is in the CELL _ DCH mode instead of the CELL _ FACH mode, the communication state of the terminal of the internet of things can be switched from the CELL _ DCH mode to the CELL _ FACH mode by reducing the data transmission rate of the terminal of the internet of things, so that the terminal of the internet of things can be always in the CELL _ FACH mode, low-rate and low-power-consumption data transmission of the terminal of the internet of things in the 3G network is realized, and communication resources are saved.
Drawings
In the drawings, which are not necessarily drawn to scale, like reference numerals may describe similar components in different views. Like reference numerals having different letter suffixes may represent different examples of similar components. The drawings illustrate generally, by way of example, but not by way of limitation, various embodiments discussed herein.
Fig. 1 is a schematic flow chart 1 of a data transmission method of the internet of things according to an embodiment of the present invention;
fig. 2 is a schematic flow chart of a data transmission method of the internet of things according to an embodiment of the present invention 2;
fig. 3 is a schematic structural diagram 1 of an internet of things terminal according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram 2 of an internet of things terminal according to an embodiment of the present invention;
fig. 5 is a schematic structural diagram 3 of an internet of things terminal according to an embodiment of the present invention.
Detailed Description
The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.
Example one
The embodiment of the invention provides an internet of things data transmission method, which is applied to an internet of things terminal, and as shown in fig. 1, the internet of things data transmission method comprises the following steps:
step 101, sending data to be sent.
For example, when the terminal of the internet of things needs to send data to be sent currently, the data to be sent may be first divided into a plurality of data blocks to be cached, and one data block is read every second to be sent, where the data transmission rate for sending the data to be sent is a ratio of the data amount of the data block to 1 second of time. Wherein the data amount of the plurality of data blocks is equal.
And 102, determining whether the current communication state is in a CELL _ DCH mode.
For example, the modes in which traffic data can be transmitted in the 3G network are 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, and when the terminal of the Internet of things is in the CELL _ DCH mode, the network allocates a special transmission channel for the terminal of the Internet of things to transmit service data, so that the service data can be transmitted quickly; when the service data rate is lower than the switching threshold, the network can switch the terminal of the internet of things to the CELL _ FACH mode, release the dedicated channel allocated to the terminal of the internet of things, and then use the public channel and the low data transmission rate to transmit the service data, and when the service data rate of the terminal of the internet of things is higher than the switching threshold, switch to the CELL _ DCH mode again, and allocate the dedicated channel again.
Specifically, before the terminal of the internet of things sends data to be sent, the terminal of the internet of things cannot know the switching threshold of the current access CELL, and further cannot know whether the communication state is the CELL _ DCH mode or the CELL _ FACH mode when the terminal of the internet of things sends the data to be sent according to the current data transmission rate, so that when the terminal of the internet of things sends the data to be sent, the current communication state can be detected in time, the current communication state is convenient to be the CELL _ DCH mode, and the data transmission rate can be adjusted in time.
And 103, if the current communication state is the CELL _ DCH mode, reducing the data transmission rate of the data to be sent, 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 _ DCH mode, it is described that the current data transmission rate of the terminal of the internet of things is relatively large and exceeds the switching threshold of the current CELL, and therefore, the data transmission rate needs to be gradually reduced until the data transmission rate is smaller than the switching threshold of the current CELL, so that the communication state of the terminal of the internet of things is switched from the CELL _ DCH mode to the CELL _ FACH mode, and the low-rate and low-power consumption transmission state is maintained.
Therefore, when the communication state of the terminal of the internet of things in the 3G network is in the CELL _ DCH mode instead of the CELL _ FACH mode, the communication state of the terminal of the internet of things can be switched from the CELL _ DCH mode to the CELL _ FACH mode by reducing the data transmission rate of the terminal of the internet of things, so that the terminal of the internet of things can be always in the CELL _ FACH mode, low-rate and low-power-consumption data transmission of the terminal of the internet of things in the 3G network is realized, and communication resources are saved.
Further, if the current communication state is the CELL _ FACH mode, the communication state of the terminal of the Internet of things can be monitored in real time; determining whether a communication state is switched from a CELL _ FACH mode to a CELL _ DCH mode; and if the communication state is switched from the CELL _ FACH mode to the CELL _ DCH mode, reducing the data transmission rate, 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, it is described that the current data transmission rate of the terminal of the internet of things is relatively low and does not exceed the switching threshold of the current CELL, so that the data to be sent can be continuously sent by using the current data transmission rate, but in practical application, there are many CELLs covered by the 3G network, the switching thresholds of each CELL are different, and the number of users in some CELLs is relatively small, so that the switching threshold can be relatively low; the number of users in some cells is more, so the switching threshold is higher. If the terminal of the internet of things performs CELL switching when sending data at the same data transmission rate, the terminal of the internet of things is likely to be switched from a CELL with a higher switching threshold to a CELL with a lower switching threshold, the terminal of the internet of things is in a CELL _ FACH mode before CELL switching, and the CELL is likely to be changed from the CELL _ FACH mode to a CELL _ DCH mode after CELL switching, so that the terminal of the internet of things can monitor the current mode in real time, and whether the current communication state is switched from the CELL _ FACH mode to the CELL _ DCH mode is determined. If the current communication state is switched from the CELL _ FACH mode to the CELL _ DCH mode, the current data transmission rate of the terminal of the Internet of things is larger and exceeds the switching threshold of the current CELL, so that the data transmission rate needs to be gradually reduced until the data transmission rate is smaller than the switching threshold of the current CELL, the communication state of the terminal of the Internet of things is switched from the CELL _ DCH mode to the CELL _ FACH mode again, and the low-rate and low-power consumption transmission state is kept.
Optionally, when sending data to be sent, a data rate threshold may be first obtained, the data transmission rate is obtained according to the data rate threshold, and then 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, and represents a threshold value of a rate when the terminal of the internet of things switches from the CELL _ FACH mode to the CELL _ DCH mode, or when the terminal of the internet of things switches from the CELL _ DCH mode to the CELL _ FACH mode. During initialization, a default data rate threshold can be preset in the terminal of the internet of things, the data rate threshold can be an experience value of a person skilled in the art, and the terminal of the internet of things can read the default data rate threshold when the terminal of the internet of things is used for network access for the first time. In the using process of the terminal of the internet of things, the terminal of the internet of things is likely to be frequently switched among cells, so that the data rate threshold is dynamically changed, and if the terminal of the internet of things is suddenly turned off in the using process, the terminal of the internet of things can be turned on again to obtain the data rate threshold when the terminal of the internet of things is turned off last time.
Optionally, in order to ensure that the terminal of the internet of things in the 3G network is continuously in the low power consumption and low rate CELL _ FACH mode, the data transmission rate of the terminal of the internet of things needs to be maintained at a lower level, so that when the data transmission rate is obtained according to the data rate threshold, the data transmission rate less than or equal to the data rate threshold may be obtained to send data. 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 100k/s (kilobytes/second), the data transmission rate is also 100 k/s; alternatively, 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 80 k/s. Preferably, the data transmission rate is less than the data rate threshold.
For example, the data to be sent may be sent according to the obtained data transmission rate. For example, the data to be sent may be first divided into a plurality of data blocks for buffering according to the data transmission rate, where the data amount of each data block is equal to the data amount that can be sent per second defined by the data transmission rate, and then the data to be sent may be sent according to the data blocks. For example, assuming that the data rate threshold is 100k/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 smaller than or equal to 100k for storage, and the specific division may be according to the rate rule. When the rate rule indicates that the data transmission rate is equal to the data rate threshold, the data to be transmitted can be divided into data blocks equal to 100k for storage; when the rate rule indicates that the data transmission rate is 80% of the data rate threshold, the data to be transmitted may be divided into 80k data blocks for storage. At this moment, the internet of things terminal only needs to read one data block per second to send, and the sending rate can be guaranteed to meet the requirement.
Optionally, if the current communication state is switched from the CELL _ FACH mode to the CELL _ DCH mode, the data transmission rate may be first reduced, the data to be sent is sent according to the reduced data transmission rate, then it is determined whether the communication state is switched from the CELL _ DCH mode to the CELL _ FACH mode, and if the communication state is not switched from the CELL _ DCH mode to the CELL _ FACH mode, the data transmission rate is continuously reduced until the current communication state is switched from the CELL _ DCH mode to the CELL _ FACH mode.
In an example, the terminal of the internet of things is switched from the CELL _ FACH mode to the CELL _ DCH mode, which means that the data transmission rate of the terminal of the internet of things is larger than the switching threshold of the current CELL, and in order to switch the terminal of the internet of things from the CELL _ DCH mode to the CELL _ FACH mode again, the data transmission rate of the terminal of the internet of things can be reduced, but the terminal of the internet of things cannot know the switching threshold of the current CELL and cannot directly reduce the data transmission rate to be less than or equal to the switching threshold of the CELL, so in practical application, the data transmission rate can be reduced step by step, and each time the data transmission rate is reduced, whether the communication state of the terminal of the internet of things is switched from the CELL _ DCH mode to the CELL _ FACH mode is detected, and if the communication state of the terminal of the internet of things is still maintained, until the current communication state switches from CELL _ DCH mode to CELL _ FACH mode.
Further, if the current communication state is 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 terminal of the internet of things is switched from the CELL _ DCH mode to the CELL _ FACH mode again, it is described that the data transmission rate after the last reduction is already smaller than or equal to the switching threshold of the current CELL, and the terminal of the internet of things can be maintained in the CELL _ FACH mode by using the data transmission rate after the last reduction, and at this time, the data rate threshold of the terminal of the internet of things can be updated according to the data transmission rate after the last reduction, so that when the terminal of the internet of things transmits service data next time, the data transmission rate is obtained according to the updated data rate threshold.
The embodiment of the invention provides a data transmission method of an Internet of things, which comprises the following steps: sending data to be sent; determining whether the current communication state is a CELL dedicated channel CELL _ DCH mode; and if the current communication state is in a CELL _ DCH mode, reducing the data transmission rate of the data to be sent, so that the communication state is switched from the CELL _ DCH mode to a CELL forward access channel CELL _ FACH mode. Compared with the prior art, when the communication state of the terminal of the internet of things in the 3G network is in the CELL _ DCH mode instead of the CELL _ FACH mode, the communication state of the terminal of the internet of things can be switched from the CELL _ DCH mode to the CELL _ FACH mode by reducing the data transmission rate of the terminal of the internet of things, so that the terminal of the internet of things can be always in the CELL _ FACH mode, low-rate and low-power-consumption data transmission of the terminal of the internet of things in the 3G network is realized, and communication resources are saved.
Example two
The embodiment of the invention provides an Internet of things data transmission method, which is applied to an Internet of things terminal, and as shown in figure 2, the method comprises the following steps:
step 201, acquiring a data rate threshold, and executing step 202.
For example, the terminal of the internet of things may obtain a default data rate threshold, or obtain a data rate threshold when the terminal of the internet of things is powered off last time.
Step 202, according to the data rate threshold, caching the data to be sent, and executing step 203.
For example, the data to be transmitted may be divided into a plurality of data blocks for storage, and the size of the data blocks may be adjusted according to a data rate threshold. For example, assuming that the data rate threshold is 100k/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 smaller than or equal to 100k for storage. Specifically, the division may be performed according to a rate rule. Assuming that 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; assuming that the rate rule indicates that the data transmission rate is 80% of the data rate threshold, the data to be transmitted may be divided into 80k data blocks for storage.
Step 203, obtaining the data transmission rate according to the data rate threshold, and executing step 204.
For example, the data transmission rate may be obtained according to a preset rate rule. Assuming that the data rate threshold is 100k/s, if the rate rule indicates that the data transmission rate is equal to the data rate threshold, the data transmission rate is also 100 k/s; if the rate rule indicates that the data transmission rate is 80% of the data rate threshold, then the data transmission rate is 80 k/s. Preferably, the data transmission rate is less than the data rate threshold.
Step 204, sending the data to be sent according to the data transmission rate, and executing step 205.
For example, in order to satisfy the data transmission rate obtained according to the data rate threshold, the terminal of the internet of things may read one data block from the buffer every second to send the data block.
Step 205, detecting whether the current communication state is switched from a CELL _ FACH mode to a CELL _ DCH mode; if the current communication state has been switched from the CELL _ FACH mode to the CELL _ DCH mode, go to step 206; if the current communication status is not switched from the CELL _ FACH mode to the CELL _ DCH mode, step 210 is executed.
For example, when the terminal of the internet of things starts to transmit service data, it may first detect whether a communication state is a CELL _ DCH mode, and when the communication state is the CELL _ DCH mode, reduce a data transmission rate, and detect whether the terminal switches from the CELL _ DCH mode to the CELL _ FACH mode, if the terminal has switched from the CELL _ DCH mode to the CELL _ FACH mode, continuously send data to be sent according to the reduced data transmission rate, and if the terminal has not switched from the CELL _ DCH mode to the CELL _ FACH mode, continuously reduce the data transmission rate until the current communication state switches from the CELL _ DCH mode to the CELL _ FACH mode; and when the communication state is the CELL _ FACH mode, continuously monitoring the communication state, and if the communication state of the terminal of the Internet of things is detected to be changed, determining whether the terminal of the Internet of things is switched from the CELL _ FACH mode to the CELL _ DCH mode.
Step 206, reducing the data transmission rate, and executing step 207.
For example, if the current communication state is switched from the CELL _ FACH mode to the CELL _ DCH mode, which indicates that the data transmission rate is high at this time, in order to make the terminal of the internet of things switch back to the CELL _ FACH mode from the CELL _ DCH mode, the data transmission rate may be gradually reduced. For example, the data transmission rate may be decreased stepwise by a difference of 10 k/s. Assuming that the initial data transmission rate is 100k/s, the data transmission rate after the first reduction is 90 k/s.
Step 207, sending the data to be sent according to the reduced data transmission rate, and executing step 208.
For example, after the data transmission rate is reduced, the buffered and unsent data to be transmitted may be subdivided according to the reduced data transmission rate, and divided into data blocks matched with the reduced data transmission rate, so that the internet of things terminal reads one data block per second to transmit, and the reduced data transmission rate may be satisfied. Assuming that the reduced data transmission rate is 90k/s, the buffered and unsent data to be transmitted can be divided into a plurality of 90k data blocks for buffering, and the terminal of the internet of things can read one data block per second for transmission, and at this time, the data transmission rate of the terminal of the internet of things is 90 k/s.
Step 208, detecting whether the current mode is switched from the CELL _ DCH mode to the CELL _ FACH mode; if the current mode is switched from the CELL _ DCH mode to the CELL _ FACH mode, executing step 209; if the CELL _ DCH mode is not currently switched to the CELL _ FACH mode, step 206 is executed.
For example, since the terminal of the internet of things cannot acquire the handover threshold of the current CELL, and thus cannot directly reduce the data transmission rate to be less than or equal to the handover threshold of the CELL, in practical application, the data transmission rate may be gradually reduced, and each time the data transmission rate is reduced, it is detected whether the communication state of the terminal of the internet of things is switched from the CELL _ DCH mode to the CELL _ FACH mode, and if the communication state of the terminal of the internet of things is still maintained as the CELL _ DCH mode after the reduction, the data transmission rate is continuously reduced, and then the communication state of the terminal of the internet of things is re-detected until the current communication state is switched from the CELL _ DCH mode to the CELL _.
Step 209, updating the data rate threshold according to the reduced data transmission rate, and executing step 202.
For example, if the current mode is switched from the CELL _ DCH mode to the CELL _ FACH mode, it is indicated that the last reduced data transmission rate is already smaller than the switching threshold of the current CELL, and the last reduced data transmission rate is adopted to enable the terminal of the internet of things to be maintained in the CELL _ FACH mode, and at this time, the data rate threshold of the terminal of the internet of things may be updated according to the last reduced data transmission rate, so that the data transmission rate is obtained according to the updated data rate threshold when the terminal of the internet of things transmits service data next time.
And step 210, continuing to use the data transmission rate to transmit the data to be transmitted.
For example, if the current communication state of the terminal of the internet of things is not switched from the CELL _ FACH mode to the CELL _ DCH mode, it is described that the current data transmission rate of the terminal of the internet of things can enable the terminal of the internet of things to maintain the CELL _ FACH mode, and the data transmission rate is continuously used to transmit the data to be transmitted.
It should be noted that, the sequence of the steps of the data transmission method for the internet of things provided by the embodiment of the present invention may be appropriately adjusted, and the steps may also be increased or decreased according to the circumstances, and any method that can be easily conceived by a person skilled in the art within the technical scope disclosed by the present invention should be included in the protection scope of the present invention, and therefore, no further description is given.
Compared with the prior art, if the communication state of the terminal of the internet of things is switched from the CELL _ FACH mode to the CELL _ DCH mode in the 3G network, the communication state of the terminal of the internet of things can be switched from the CELL _ DCH mode to the CELL _ FACH mode again by reducing the data transmission rate of the terminal of the internet of things, so that the terminal of the internet of things can be continuously in the CELL _ FACH mode, low-rate and low-power-consumption data transmission of the terminal of the internet of things in the 3G network is realized, and communication resources are saved.
EXAMPLE III
An embodiment of the present invention provides an internet of things terminal 30, as shown in fig. 3, including:
a sending unit 301, configured to send data to be sent.
A first determining unit 302, configured to determine whether the current communication state is the CELL _ DCH mode.
A reducing unit 303, configured to reduce, if the current communication state is the CELL _ DCH mode, a data transmission rate for sending the data to be sent, so that the communication state is switched from the CELL _ DCH mode to the CELL _ FACH mode.
Therefore, when the communication state of the terminal of the internet of things in the 3G network is in the CELL _ DCH mode instead of the CELL _ FACH mode, the communication state of the terminal of the internet of things can be switched from the CELL _ DCH mode to the CELL _ FACH mode by reducing the data transmission rate of the terminal of the internet of things, so that the terminal of the internet of things can be always in the CELL _ FACH mode, low-rate and low-power-consumption data transmission of the terminal of the internet of things in the 3G network is realized, and communication resources are saved.
Optionally, as shown in fig. 4, the terminal 30 further includes:
a monitoring unit 304, configured to monitor a communication state if the current communication state is a CELL _ FACH mode;
a second determination unit 305 for determining 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: acquiring a data rate threshold; acquiring a data transmission rate according to the data rate threshold; and sending the data to be sent according to the data transmission rate.
Optionally, the sending unit 301 is specifically configured to: dividing the data to be sent into a plurality of data blocks for caching according to the data transmission rate, wherein the data volume of each data block is equal to the data volume which can be sent every second and is limited by the data transmission rate; and sending the data to be sent according to the data block.
Optionally, the reducing unit 303 is specifically configured to: sending the data to be sent according to the reduced data transmission rate; determining whether a communication state is switched from a CELL _ DCH mode to a CELL _ FACH mode; and if the communication state is not switched from the CELL _ DCH mode to the CELL _ FACH mode, continuously reducing the data transmission rate until the current communication state is switched from the CELL _ DCH mode to the CELL _ FACH mode.
Optionally, as shown in fig. 5, the terminal 30 further includes: an updating unit 306, 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.
It should be noted that, for convenience and brevity of description, it may be clearly understood by those skilled in the art that the specific working processes of the terminal and the unit described above may refer to corresponding processes in the foregoing method embodiments, and are not described herein again.
Secondly, the first determining Unit 302, the reducing Unit 303, the monitoring Unit 304, the second determining Unit 305 and the updating Unit 306 can be implemented by a Central Processing Unit (CPU), a microprocessor Unit (MPU), a Digital Signal Processor (DSP), a Field Programmable Gate Array (FPGA), or the like located in the internet of things terminal 30. The caching unit 306 may be implemented by a memory located in the internet of things terminal 30. The transmitting unit 301 may be implemented by an antenna located in the internet of things terminal 30 and a driving circuit of the antenna.
The embodiment of the invention provides an Internet of things terminal, which comprises: and the sending unit is used for sending data to be sent. A first determining unit, configured to determine whether a current communication state is a CELL _ DCH mode. And the reducing unit is used for reducing the data transmission rate of the data to be sent 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 terminal of the internet of things in the 3G network is in the CELL _ DCH mode instead of the CELL _ FACH mode, the communication state of the terminal of the internet of things can be switched from the CELL _ DCH mode to the CELL _ FACH mode by reducing the data transmission rate of the terminal of the internet of things, so that the terminal of the internet of things can be always in the CELL _ FACH mode, low-rate and low-power-consumption data transmission of the terminal of the internet of things in the 3G network is realized, and communication resources are saved.
Example four
The embodiment of the invention also provides an Internet of things system, which comprises an Internet of things terminal;
the Internet of things terminal is used for acquiring a data transmission rate according to a data rate threshold; sending data to be sent according to a data transmission rate obtained according to a data rate threshold; determining whether a current communication state is switched from a CELL _ FACH mode to a CELL _ DCH mode; and if the current communication state is switched from the CELL _ FACH mode to the CELL _ DCH mode, reducing the data transmission rate, so that the communication state is switched from the CELL _ DCH mode to the CELL _ FACH mode.
Therefore, when the terminal of the internet of things system in the 3G network is switched from the CELL _ FACH mode to the CELL _ DCH mode, the communication state of the terminal of the internet of things can be switched from the CELL _ DCH mode to the CELL _ FACH mode again by reducing the data transmission rate of the terminal of the internet of things, so that the terminal of the internet of things can be continuously in the CELL _ FACH mode, low-rate and low-power-consumption data transmission of the terminal of the internet of things in the 3G network is realized, and communication resources are saved.
As will be appreciated by one skilled in the art, embodiments of the present invention may be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of a hardware embodiment, a software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, optical storage, and the like) having computer-usable program code embodied therein.
The present invention is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention.

Claims (12)

1. A data transmission method of the Internet of things is characterized by comprising the following steps:
sending data to be sent;
determining whether the current communication state is a CELL dedicated channel CELL _ DCH mode;
and if the current communication state is in a CELL _ DCH mode, reducing the data transmission rate of the data to be sent, so that the communication state is switched from the CELL _ DCH mode to a CELL forward access channel CELL _ FACH mode.
2. The method of claim 1, wherein after the determining whether the current communication state is CELL _ DCH mode, the method further comprises:
if the current communication state is the CELL _ FACH mode, monitoring the communication state;
determining whether a communication state is switched from a CELL _ FACH mode to a CELL _ DCH mode;
and if the communication state is switched from the CELL _ FACH mode to the CELL _ DCH mode, reducing the data transmission rate, so that the communication state is switched from the CELL _ DCH mode to the CELL _ FACH mode.
3. The method of claim 1 or 2, wherein the sending data to be sent comprises:
acquiring a data rate threshold;
acquiring the data transmission rate according to the data rate threshold;
and sending the data to be sent according to the data transmission rate.
4. The method of claim 3, wherein the transmitting the data to be transmitted at the data transmission rate comprises:
dividing the data to be sent into a plurality of data blocks for caching according to the data transmission rate, wherein the data volume of each data block is equal to the data volume which can be sent every second and is limited by the data transmission rate;
and sending the data to be sent according to the data block.
5. The method of claim 3, wherein causing the communication state to switch from CELL _ DCH mode to CELL _ FACH mode comprises:
sending the data to be sent according to the reduced data transmission rate;
determining whether a communication state is switched from a CELL _ DCH mode to a CELL _ FACH mode;
and if the communication state is not switched from the CELL _ DCH mode to the CELL _ FACH mode, continuously reducing the data transmission rate.
6. The method of claim 5, wherein after the determining whether the communication state is switched from CELL _ DCH mode to CELL _ FACH mode, the method further comprises:
and if the communication state is switched from the CELL _ DCH mode to the CELL _ FACH mode, updating the data rate threshold according to the reduced data transmission rate.
7. An internet of things terminal, comprising:
a sending unit, configured to send data to be sent;
a first determination unit, configured to determine whether a current communication state is a CELL dedicated channel CELL _ DCH mode;
and the reducing unit is used for reducing the data transmission rate of the data to be sent if the current communication state is in the CELL _ DCH mode, so that the communication state is switched from the CELL _ DCH mode to the CELL _ FACH mode of the CELL forward access channel.
8. The terminal of claim 7, further comprising:
the monitoring unit is used for monitoring the communication state if the current communication state is the CELL _ FACH mode;
a second determination unit configured to determine whether a 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.
9. The terminal according to claim 7 or 8, wherein the sending unit is specifically configured to:
acquiring a data rate threshold;
acquiring a data transmission rate according to the data rate threshold;
and sending the data to be sent according to the data transmission rate.
10. The terminal according to claim 9, wherein the sending unit is specifically configured to:
dividing the data to be sent into a plurality of data blocks for caching according to the data transmission rate, wherein the data volume of each data block is equal to the data volume which can be sent every second and is limited by the data transmission rate;
and sending the data to be sent according to the data block.
11. The terminal according to claim 9, wherein the reduction unit is specifically configured to:
sending the data to be sent according to the reduced data transmission rate;
determining whether a communication state is switched from a CELL _ DCH mode to a CELL _ FACH mode;
and if the communication state is not switched from the CELL _ DCH mode to the CELL _ FACH mode, continuously reducing the data transmission rate.
12. The terminal of claim 11, wherein the terminal further comprises:
and the updating unit is used for updating the data rate threshold according to the reduced data transmission rate if the communication state is switched from the CELL _ DCH mode to the CELL _ FACH mode.
CN201610248495.9A 2016-04-20 2016-04-20 Internet of things data transmission method and Internet of things terminal Active CN107306440B (en)

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