CN114363956A - Downlink message congestion control method, system, device and storage medium - Google Patents
Downlink message congestion control method, system, device and storage medium Download PDFInfo
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- CN114363956A CN114363956A CN202111506172.2A CN202111506172A CN114363956A CN 114363956 A CN114363956 A CN 114363956A CN 202111506172 A CN202111506172 A CN 202111506172A CN 114363956 A CN114363956 A CN 114363956A
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- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W28/00—Network traffic management; Network resource management
- H04W28/02—Traffic management, e.g. flow control or congestion control
- H04W28/0289—Congestion control
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W28/00—Network traffic management; Network resource management
- H04W28/02—Traffic management, e.g. flow control or congestion control
- H04W28/0284—Traffic management, e.g. flow control or congestion control detecting congestion or overload during communication
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Abstract
The invention discloses a method, a system, a device and a storage medium for controlling downlink message congestion, and relates to the technical field of communication. The downlink message congestion control method comprises the following steps: acquiring a downlink message; determining an Internet of things terminal according to the downlink message; determining a cell to which the terminal of the Internet of things belongs; acquiring a first number of messages which are sent to the cell and are not received by a current time slot; determining a network congestion condition of the cell according to the first number; and sending the downlink message according to the network congestion condition. The method and the device can reduce network congestion of the base station side and improve reliability of the service of the Internet of things.
Description
Technical Field
The present invention relates to the field of communications technologies, and in particular, to a method, a system, an apparatus, and a storage medium for controlling congestion of a downlink message.
Background
The Internet of things platform is a platform for providing rapid development, deployment and application management for an Internet of things application developer, the developer does not need to consider the problems of lower-layer infrastructure expansion, data management and collection, communication protocol, communication safety and the like, the development cost is reduced, and the development time is greatly shortened. The platform of the Internet of things has general basic capabilities of terminal access, terminal management, data reporting, instruction issuing and the like. After the Internet of things terminal is accessed to the Internet of things platform, the Internet of things application can send downlink messages to carry out remote control, instruction issuing, remote upgrading and other operations on the Internet of things terminal through the Internet of things platform.
In a narrow-band internet of things, a scene that an internet of things platform simultaneously issues downlink messages to a large number of internet of things terminals in the same cell often exceeds the downlink air interface paging capability of a cell base station, so that network congestion and even avalanche are caused. Although a single client can perform discrete processing on the internet of things terminal under the application of the client to avoid network congestion as much as possible, the internet of things terminals of other clients cannot be sensed, and the internet of things terminals under multiple applications of the same base station cannot perform cooperative processing, which still causes network congestion of the internet of things terminal of the cell where the base station is located.
Disclosure of Invention
The present invention is directed to solving at least one of the problems of the prior art. Therefore, the invention provides a method, a system, a device and a storage medium for controlling downlink message congestion, which can reduce network congestion at a base station side and improve the reliability of the service of the internet of things.
In one aspect, an embodiment of the present invention provides a method for controlling congestion of a downlink message, including the following steps:
acquiring a downlink message;
determining an Internet of things terminal according to the downlink message;
determining a cell to which the terminal of the Internet of things belongs;
acquiring a first number of messages which are sent to the cell and are not received by a current time slot;
determining a network congestion condition of the cell according to the first number;
and sending the downlink message according to the network congestion condition.
According to some embodiments of the present invention, the determining the cell to which the terminal of the internet of things belongs includes:
obtaining a login message of the terminal of the Internet of things;
analyzing the login message to determine a first number of a cell to which the terminal of the internet of things belongs;
storing the second number and the first number of the terminal of the Internet of things in a terminal management library in an associated manner;
and determining the cell to which the terminal of the Internet of things belongs from the terminal management library according to the second number of the terminal of the Internet of things.
According to some embodiments of the invention, said determining a network congestion situation of said cell from said first number comprises:
when the first number is greater than a congestion threshold of a current time slot, the cellular network is congested;
when the first number is less than or equal to a congestion threshold of a current time slot, the cellular network is not congested;
wherein the congestion threshold is obtained by:
dividing a historical time interval into a plurality of historical time slots;
and acquiring a second number of messages which are sent to the cell and received by each historical time slot, and taking the second number of each historical time slot as the congestion threshold, wherein the current time slot is matched with one of the historical time slots.
According to some embodiments of the present invention, before the step of sending the downlink message according to the network congestion condition, the downlink message congestion control method further includes the following steps:
judging whether uplink data of the Internet of things terminal are received in a preset time period before the current moment;
when the uplink data of the terminal of the Internet of things is received, the downlink message is directly issued;
and when the uplink data of the terminal of the Internet of things is not received, executing the step of sending the downlink message according to the network congestion condition.
According to some embodiments of the present invention, the sending the downlink message according to the network congestion condition comprises:
when the network of the cell is not congested, judging whether the process queue of the cell is in an idle state;
when the process queue of the cell is in an idle state, sending the downlink message;
and when the process queue of the cell is not in an idle state, adding the downlink message to the process queue, and sending at most the first N downlink messages in the process queue, wherein N is the difference between the congestion threshold of the current time slot and the first number of the current time slot.
According to some embodiments of the present invention, the sending the downlink message according to the network congestion condition further includes:
when the cellular network is congested, judging whether the downlink message is an immediate instruction;
when the downlink message is an immediate instruction, returning error reporting information to the application terminal;
and when the downlink message is not an immediate instruction, adding the downlink message to the process queue.
According to some embodiments of the present invention, the downlink message congestion control method further includes the following steps:
periodically determining the process queue to be in an occupied state according to a preset timing value;
determining that the cellular network is not congested based on the first number of current time slots and the congestion threshold of current time slots;
taking out at most the first N downlink messages in the process queue;
and sending the downlink message which is in the non-timeout state.
On the other hand, an embodiment of the present invention further provides a downlink message congestion control system, including:
a first module, configured to obtain a downlink message;
the second module is used for determining the terminal of the Internet of things according to the downlink message;
a third module, configured to determine a cell to which the terminal of the internet of things belongs;
a fourth module, configured to obtain a first number of messages that have been sent to the cell and have not been received in a current timeslot;
a fifth module for determining a network congestion condition of the cell based on the first number;
a sixth module, configured to send the downlink message according to the network congestion condition.
On the other hand, an embodiment of the present invention further provides a downlink message congestion control apparatus, including:
at least one processor;
at least one memory for storing at least one program;
when the at least one program is executed by the at least one processor, the at least one processor is enabled to implement the downlink message congestion control method as described above.
On the other hand, an embodiment of the present invention further provides a computer-readable storage medium, where the computer-readable storage medium stores computer-executable instructions, where the computer-executable instructions are configured to cause a computer to execute the downlink message congestion control method as described above.
The technical scheme of the invention at least has one of the following advantages or beneficial effects: after the internet of things platform acquires the downlink message, the internet of things terminal to be sent and the cell to which the internet of things terminal belongs are determined according to the downlink message, then the first number of messages which are sent to the cell and are not received in the current time slot is acquired, the network congestion condition of the cell is determined according to the first number, and the downlink message is sent in combination with the network congestion condition, so that the sending of the downlink message can be coordinated, the network congestion of a base station side is reduced, and the reliability of the internet of things service is improved.
Drawings
Fig. 1 is a flowchart of a downlink message congestion control method according to an embodiment of the present invention;
fig. 2 is a flowchart illustrating a specific example of a downlink message congestion control method according to an embodiment of the present invention;
fig. 3 is a flowchart illustrating a specific example of a downlink message congestion control method according to another embodiment of the present invention;
fig. 4 is a schematic diagram of a downlink message congestion control system according to an embodiment of the present invention;
fig. 5 is a schematic diagram of a downlink message congestion control apparatus according to an embodiment of the present invention.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or components having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.
In the description of the present invention, it should be understood that the orientation or positional relationship referred to in the description of the orientation, such as the upper, lower, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplicity of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
In the description of the present invention, if there are first, second, etc. described, they are only used for distinguishing technical features, but they are not interpreted as indicating or implying relative importance or implicitly indicating the number of indicated technical features or implicitly indicating the precedence of the indicated technical features.
When a user issues an instruction to an internet of things terminal or remotely upgrades the internet of things terminal, if a base station simultaneously issues messages to a large number of internet of things terminals in a cell (cell), the paging capability of an air interface of the base station is exceeded, network congestion and packet loss are caused, and the instruction issuing or remote upgrading success rate is reduced. In order to reduce network congestion, users need to actively reduce the number of instructions issued each time, and the user experience is reduced. After analysis, the transmission performance bottleneck of the downlink message is the paging concurrency capability of the air interface, so that the embodiment of the invention performs flow congestion control on the downlink message under the same base station, and improves the reliability of message issuing.
Referring to fig. 1, the method for controlling congestion of a downlink message in the embodiment of the present invention includes, but is not limited to, step S110, step S120, step S130, step S140, step S150, and step S160.
Step S110, acquiring a downlink message;
step S120, determining an Internet of things terminal according to the downlink message;
step S130, determining a cell to which the terminal of the Internet of things belongs;
step S140, obtaining a first quantity of messages which are sent to a cell and are not received by a current time slot;
step S150, determining the network congestion condition of the cell according to the first quantity;
and step S160, sending the downlink message according to the network congestion condition.
Specifically, the downlink message congestion control method can be applied to an Application Enablement Platform (AEP) of an internet of things Platform, and the AEP serves as a convergence Platform of the internet of things terminal traffic, can sense the current overall congestion condition to control the number of multi-service downlink messages, and reduce the occurrence of network congestion at a base station side, thereby improving the reliability of the internet of things service. After the AEP acquires the downlink message sent by the application terminal, the Internet of things terminal to be sent and the cell to which the Internet of things terminal belongs are determined according to the downlink message, then the first quantity of messages which are sent to the cell and are not received in the current time slot is acquired, the network congestion condition of the cell is determined according to the first quantity, and the downlink message is sent in combination with the network congestion condition, so that the sending of the downlink message can be coordinated, the network congestion at the base station side is reduced, and the reliability of the Internet of things service is improved.
It should be noted that, after the application terminal sends the downlink message, the downlink message may be directly forwarded in the AEP according to the network congestion condition, or the downlink message of the user terminal may be stored in the process queue in the AEP, and the downlink message is acquired from the process queue when the downlink message needs to be forwarded.
It should be noted that the narrowband internet of things is constructed in a cellular network, and the cellular network based on the internet of things includes three parts: the system comprises an Internet of things terminal, a base station subsystem and a network subsystem. Generally, a cell is formed by six sides within a certain range with a base station as the center, all terminals of the internet of things in the cell are accessed to the base station in the center of the cell, and data interaction with a network subsystem, namely an internet of things platform, is realized through the base station.
According to some embodiments of the invention, step S130 further includes, but is not limited to, the following steps.
Obtaining a login message of an Internet of things terminal;
analyzing the login message to determine a first number of a cell to which the terminal of the Internet of things belongs;
storing the second number and the first number of the terminal of the Internet of things in a terminal management library in an associated manner;
and determining the cell to which the terminal of the Internet of things belongs from the terminal management library according to the second number of the terminal of the Internet of things.
Specifically, when the internet of things terminal accesses the internet of things platform by adopting the LWM2M protocol, the internet of things platform acquires a login message of the internet of things terminal, for example, the LWM2M protocol/4/0/8 message, analyzes the login message to determine a first number, namely a Cell ID, of a Cell to which the internet of things terminal belongs, and then stores a second number and the Cell ID of the internet of things terminal in a terminal management library in an associated manner. And when the downlink message needs to be sent, determining the cell to which the terminal of the internet of things belongs from the terminal management library according to the second number.
According to some embodiments of the invention, step S140 further includes, but is not limited to, the following steps.
When the first number is greater than the congestion threshold of the current time slot, the cellular network is congested;
when the first number is less than or equal to the congestion threshold of the current time slot, the cellular network is not congested;
the congestion threshold is obtained by the following method:
dividing a historical time interval into a plurality of historical time slots;
and acquiring a second number of messages which are sent to the cell and received by each historical time slot, and taking the second number of each historical time slot as a congestion threshold value, wherein the current time slot is matched with one of the historical time slots.
Specifically, the network congestion condition of the cell is determined by comparing the first number with a congestion threshold, which is obtained by:
and dividing the historical time interval into a plurality of historical time slots, acquiring a second number of messages which are sent to the cell and received by each historical time slot, and taking the second number of each historical time slot as a congestion threshold. Illustratively, the historical time interval may be one day, each cell may divide the historical time slots per minute, one day may divide the historical time slots into 24 × 60 — 1440 historical time slots, then a second number of messages that have been sent to the cell and received per minute is obtained and calculated, and the corresponding second number of each historical time slot is used as the congestion threshold. It should be noted that, when the AEP sends the downlink message to the terminal of the internet of things, the AEP records the issuing state and the corresponding timestamp of each instruction, where the issuing state includes two states of sent and not received, sent and received.
Based on the current time slot for sending the downlink message, the congestion threshold corresponding to one of the historical time slots may be matched, for example, if the current time slot is 13:01, the historical time slot with the time of 13:01 in the historical time zone may be matched, and if the congestion threshold of the historical time slot is determined to be 20, the congestion threshold of the current time slot is determined to be 20. Further, the internet of things platform may also count a congestion threshold corresponding to each historical time slot of each cell in the last month, and perform matching between the current time slot and the historical time slot by using the date and time, for example, if the current date is No. 2 month 20 and the time is 13:02, the current time slot with the time of 13:02 in the historical time zone of No. 1 month 20 may be matched, and if the congestion threshold of the historical time slot is determined to be 21, the congestion threshold of the current time slot is determined to be 21. Then, judging the network congestion condition of the cell, and if the first quantity is larger than the congestion threshold value of the current time slot, judging that the network of the cell is congested; when the first number is less than or equal to the congestion threshold for the current time slot, the cellular network is not congested.
According to some embodiments of the present invention, before step S160, the downlink message congestion control method according to the embodiments of the present invention includes, but is not limited to, the following steps.
Judging whether uplink data of the Internet of things terminal are received in a preset time period before the current time;
when the uplink data of the terminal of the Internet of things is received, the downlink message is directly issued;
and when the uplink data of the internet of things terminal is not received, executing step S160.
Specifically, before the network congestion condition of the cell is determined, whether uplink data of the internet of things terminal is received within a preset time period before the current time may be determined, for example, the internet of things terminal sends data to the internet of things platform within 20 seconds before the current time, which indicates whether the internet of things terminal passes the line within 20 seconds, so that it may be determined that the internet of things terminal is currently active. And if the uplink data of the terminal of the Internet of things is received in a preset time period before the current moment, namely the terminal of the Internet of things is currently active, directly sending downlink information. And if the uplink data of the terminal of the Internet of things is not received in a preset time period before the current time, judging the network congestion condition of the cell.
According to some embodiments of the invention, step S160 includes, but is not limited to, the following steps.
When the network of the cellular cell is not congested, judging whether the process queue of the cellular cell is in an idle state;
when the process queue of the cell is in an idle state, sending a downlink message;
and when the process queue of the cell is not in an idle state, adding the downlink message to the process queue, and sending at most the first N downlink messages in the process queue, wherein N is the difference between the congestion threshold of the current time slot and the first number of the current time slot.
Specifically, if it is determined that the cell network is not congested, it is further determined whether a process queue of the cell is in an idle state. If the process queue of the cell is in an idle state, indicating that no other downlink message is queued at present, directly sending the downlink message; and if the process queue of the cell is not in an idle state, indicating that other downlink messages are queued currently, adding the downlink message to the process queue, and sending at most the first N downlink messages in the process queue. N is the congestion threshold of the current time slot minus the first number of current time slots, i.e. the second number of sent and received messages in the history time slot matching the current time slot minus the first number of sent and not received messages in the current time slot.
Specifically, when the number of the downlink messages queued in the process queue is greater than or equal to N, sending the first N downlink messages; and when the number of the downlink messages queued in the process queue is less than N, sending all the downlink messages in the process queue. The embodiment of the invention reduces the network congestion condition at the base station side through a downlink message discretization sending mechanism.
According to some embodiments of the invention, step S160 includes, but is not limited to, the following steps.
When the cellular network is congested, judging whether the downlink message is an immediate instruction or not;
when the downlink message is an immediate instruction, returning error report information to the application terminal;
when the downstream message is not an immediate instruction, the downstream message is added to the process queue.
Specifically, if the cellular network congestion is determined, further determining whether the downlink message is an immediate instruction, and if the downlink message is the immediate instruction, returning an error report message to the application terminal and not sending the downlink message; if the downstream message is not an immediate instruction, the downstream message is added to the process queue. The embodiment of the invention reduces the network congestion condition at the base station side through a cache mechanism.
It should be noted that whether the downlink message is an immediate instruction or not may be determined by setting a downlink message TTL (Time To Live value), and when the TTL is equal To 0, the downlink message is an immediate instruction, and when the TTL is greater than 0, the downlink message is not an immediate instruction.
According to some specific embodiments of the present invention, a downlink message congestion control method according to embodiments of the present invention includes, but is not limited to, the following steps.
Periodically determining the process queue to be in an occupied state according to a preset time value;
determining that the cellular cell network is not congested according to the first number of the current time slots and the congestion threshold of the current time slots;
at most the first N downlink messages in the process queue are taken out;
and sending the downlink message which is in the non-timeout state.
Specifically, in addition to triggering the internet of things platform to send the downlink message by receiving the user instruction, the method may further determine that the process queue is in an occupied state according to a preset time slot, for example, determine that the process queue is in an occupied state every second, further determine that the current network of the cell is not congested according to the first number of the current time slot and a congestion threshold of the current time slot, take out at most the first N downlink messages in the process queue, and then send the downlink message in a non-timeout state, where whether the downlink message is timeout or not may be determined according to TTL of the downlink message, and if the downlink message is in a timeout state, not send the downlink message in the timeout state and modify the downlink message state to be TTL timeout.
Specifically, fig. 2 shows a flowchart of a specific example of a downlink message congestion control method according to an embodiment of the present invention. The downlink message congestion control method provided by the embodiment of the invention is applied to an application terminal for sending a downlink message to an internet of things platform and triggering the internet of things platform to send the downlink message, and the specific example comprises the following implementation steps:
step S210, receiving a downlink message;
step S220, determining an Internet of things terminal according to the downlink message;
step S230, determining whether the uplink data of the internet of things terminal has been received within a preset time period before the current time, and if the uplink data of the internet of things terminal has been received within the preset time period before the current time, executing step S240; if the uplink data of the internet of things terminal is not received within a preset time period before the current time, executing step S250;
step S240, sending the downlink message to the terminal of the Internet of things;
step S250, determining a cell to which the terminal of the Internet of things belongs, judging whether the network of the cell is congested, and if the network of the cell is not congested, executing step S260; if the cell network is congested, performing step S270;
step S260, judging whether the process queue of the cell is in an idle state, if so, executing step S240; if the process queue is not in the idle state, executing step S280;
step S270, judging whether the downlink message is an immediate instruction, if so, executing step S290, and if not, executing step S2110;
step S280, caching the downlink messages to a process queue, and sending the maximum first N downlink messages in the process queue;
step S290, returning error information to the application terminal;
step S2110, buffering the downlink message to a process queue.
Specifically, fig. 3 is a flowchart illustrating a specific example of a downlink message congestion control method according to another embodiment of the present invention. The downlink message congestion control method provided by the embodiment of the invention is applied to a timer of an Internet of things platform to automatically trigger a process queue to issue downlink messages, and the specific example is realized by the following steps:
step S310, periodically triggering a process queue to enter a task to be issued according to a preset time value;
step S320, judging whether the process queue of the cell is in an occupied state, if so, executing step S330; if it is not the occupied state, i.e., the idle state, step S340 is performed.
Step S330, judging whether the network of the cell is congested, if the network of the cell is not congested, executing step S350; if the network of the cell is congested, step S340 is performed.
Step S340, waiting for the next period to trigger the process queue to enter a task to be issued;
step S350, taking out the first N downlink messages in the progress queue at most, and respectively judging whether the taken out downlink messages are in a timeout state, if not, executing step S360; if it is the timeout state, step S370 is performed.
Step S360, sending a downlink message;
step S370, mark the downlink message as a timeout state, and notify the application terminal.
An embodiment of the present invention further provides a downlink message congestion control system, and referring to fig. 4, the downlink message congestion control system includes:
a first module, configured to obtain a downlink message;
the second module is used for determining the terminal of the Internet of things according to the downlink message;
the third module is used for determining a cell to which the terminal of the internet of things belongs;
a fourth module, configured to obtain a first number of messages that have been sent to a cell and have not been received in a current timeslot;
a fifth module for determining a network congestion condition of the cell based on the first number;
and a sixth module, configured to send the downlink message according to a network congestion condition.
It can be understood that the contents in the embodiments of the downlink message congestion control method are all applicable to the embodiments of the present system, the functions specifically implemented by the embodiments of the present system are the same as those in the embodiments of the downlink message congestion control method, and the beneficial effects achieved by the embodiments of the present system are also the same as those achieved by the embodiments of the downlink message congestion control method.
Referring to fig. 5, fig. 5 is a schematic diagram of a downlink message congestion control apparatus according to an embodiment of the present invention. The downlink message congestion control apparatus according to the embodiment of the present invention includes one or more control processors and a memory, and fig. 5 illustrates one control processor and one memory as an example.
The control processor and the memory may be connected by a bus or other means, as exemplified by the bus connection in fig. 5.
The memory, which is a non-transitory computer readable storage medium, may be used to store non-transitory software programs as well as non-transitory computer executable programs. Further, the memory may include high speed random access memory, and may also include non-transitory memory, such as at least one disk storage device, flash memory device, or other non-transitory solid state storage device. In some embodiments, the memory optionally includes memory remotely located from the control processor, and the remote memory may be connected to the downstream message congestion control device via a network. Examples of such networks include, but are not limited to, the internet, intranets, local area networks, mobile communication networks, and combinations thereof.
Those skilled in the art will appreciate that the arrangement shown in fig. 5 does not constitute a limitation of the downstream message congestion control arrangement and may include more or fewer components than those shown, or some of the components may be combined, or a different arrangement of components.
The non-transitory software program and instructions required to implement the method for controlling congestion of a downlink message applied to the apparatus for controlling congestion of a downlink message in the above embodiments are stored in the memory, and when executed by the control processor, the method for controlling congestion of a downlink message applied to the apparatus for controlling congestion of a downlink message in the above embodiments is executed.
Furthermore, an embodiment of the present invention also provides a computer-readable storage medium, where the computer-readable storage medium stores computer-executable instructions, which are executed by one or more control processors, and may cause the one or more control processors to execute the downlink message congestion control method in the foregoing method embodiment.
One of ordinary skill in the art will appreciate that all or some of the steps, systems, and methods disclosed above may be implemented as software, firmware, hardware, and suitable combinations thereof. Some or all of the physical components may be implemented as software executed by a processor, such as a central processing unit, digital signal processor, or microprocessor, or as hardware, or as an integrated circuit, such as an application specific integrated circuit. Such software may be distributed on computer readable media, which may include computer storage media (or non-transitory media) and communication media (or transitory media). The term computer storage media includes volatile and nonvolatile, removable and non-removable media implemented in any method or technology for storage of information such as computer readable instructions, data structures, program modules or other data, as is well known to those of ordinary skill in the art. Computer storage media includes, but is not limited to, RAM, ROM, EEPROM, flash memory or other memory technology, CD-ROM, Digital Versatile Disks (DVD) or other optical disk storage, magnetic cassettes, magnetic tape, magnetic disk storage or other magnetic storage devices, or any other medium which can be used to store the desired information and which can accessed by a computer. In addition, communication media typically embodies computer readable instructions, data structures, program modules or other data in a modulated data signal such as a carrier wave or other transport mechanism and includes any information delivery media as known to those skilled in the art.
The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the gist of the present invention.
Claims (10)
1. A downlink message congestion control method is characterized by comprising the following steps:
acquiring a downlink message;
determining an Internet of things terminal according to the downlink message;
determining a cell to which the terminal of the Internet of things belongs;
acquiring a first number of messages which are sent to the cell and are not received by a current time slot;
determining a network congestion condition of the cell according to the first number;
and sending the downlink message according to the network congestion condition.
2. The method according to claim 1, wherein the determining the cell to which the terminal of the internet of things belongs includes:
obtaining a login message of the terminal of the Internet of things;
analyzing the login message to determine a first number of a cell to which the terminal of the internet of things belongs;
storing the second number and the first number of the terminal of the Internet of things in a terminal management library in an associated manner;
and determining the cell to which the terminal of the Internet of things belongs from the terminal management library according to the second number of the terminal of the Internet of things.
3. The method of claim 2, wherein the determining the network congestion status of the cell according to the first number comprises:
when the first number is greater than a congestion threshold of a current time slot, the cellular network is congested;
when the first number is less than or equal to a congestion threshold of a current time slot, the cellular network is not congested;
wherein the congestion threshold is obtained by:
dividing a historical time interval into a plurality of historical time slots;
and acquiring a second number of messages which are sent to the cell and received by each historical time slot, and taking the second number of each historical time slot as the congestion threshold, wherein the current time slot is matched with one of the historical time slots.
4. The method of claim 3, wherein before the step of sending the downlink message according to the network congestion condition, the method further comprises the following steps:
judging whether uplink data of the Internet of things terminal are received in a preset time period before the current moment;
when the uplink data of the terminal of the Internet of things is received, the downlink message is directly issued;
and when the uplink data of the terminal of the Internet of things is not received, executing the step of sending the downlink message according to the network congestion condition.
5. The method according to claim 4, wherein said sending the downlink message according to the network congestion condition comprises the following steps:
when the network of the cell is not congested, judging whether the process queue of the cell is in an idle state;
when the process queue of the cell is in an idle state, sending the downlink message;
and when the process queue of the cell is not in an idle state, adding the downlink message to the process queue, and sending at most the first N downlink messages in the process queue, wherein N is the difference between the congestion threshold of the current time slot and the first number of the current time slot.
6. The method of claim 5, wherein the step of sending the downlink message according to the network congestion condition further comprises the steps of:
when the cellular network is congested, judging whether the downlink message is an immediate instruction;
when the downlink message is an immediate instruction, returning error reporting information to the application terminal;
and when the downlink message is not an immediate instruction, adding the downlink message to the process queue.
7. The method of claim 6, further comprising the steps of:
periodically determining the process queue to be in an occupied state according to a preset timing value;
determining that the cellular network is not congested based on the first number of current time slots and the congestion threshold of current time slots;
taking out at most the first N downlink messages in the process queue;
and sending the downlink message which is in the non-timeout state.
8. A downlink message congestion control system, comprising:
a first module, configured to obtain a downlink message;
the second module is used for determining the terminal of the Internet of things according to the downlink message;
a third module, configured to determine a cell to which the terminal of the internet of things belongs;
a fourth module, configured to obtain a first number of messages that have been sent to the cell and have not been received in a current timeslot;
a fifth module for determining a network congestion condition of the cell based on the first number;
a sixth module, configured to send the downlink message according to the network congestion condition.
9. A downlink message congestion control apparatus, comprising:
at least one processor;
at least one memory for storing at least one program;
when executed by the at least one processor, cause the at least one processor to implement the method of congestion control for downstream messages according to any one of claims 1 to 7.
10. A computer-readable storage medium in which a processor-executable program is stored, wherein the processor-executable program, when executed by the processor, is configured to implement the downlink message congestion control method according to any one of claims 1 to 7.
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