WO2020024991A1

WO2020024991A1 - Internet of things gateway access method and device, and storage medium

Info

Publication number: WO2020024991A1
Application number: PCT/CN2019/098655
Authority: WO
Inventors: 戴若愚
Original assignee: 中兴通讯股份有限公司
Priority date: 2018-08-01
Filing date: 2019-07-31
Publication date: 2020-02-06
Also published as: CN110798329A

Abstract

Embodiments of the present disclosure provide an Internet of Things gateway access method and device, and a computer-readable storage medium. The method comprises: an access server monitors a request reported by an Internet of Things gateway to be accessed and information issued by a registration center; in response to a detected link establishment request reported by said Internet of Things gateway and/or configuration information of said Internet of Things gateway issued by the registration center, the access server stores a mapping model to the registration center, wherein the mapping model comprises a correspondence between an identifier of said Internet of Things gateway and an identifier of the access server; and the access server provides an access service for said Internet of Things gateway according to the mapping model.

Description

Internet of things gateway access method, equipment and storage medium

Technical field

The embodiments of the present disclosure relate to, but are not limited to, the technical field of the Internet of Things.

Background technique

The link management between the IoT gateway and the access system is the foundation of the IoT service provision domain. Under the current mainstream Internet-based protocol (Internet Protocol) networking, there are the following two constraints.

1. There are many types of access protocols. There are various commonly used Internet of Things protocols, such as REST (Representational State Transfer), CoAP (Constrained Application Protocol), LwM2M (Lightweight M2M), MQTT (Message Queuing and Telemetry) Transport (message queue telemetry transmission), AMQP (Advanced Message Queuing Protocol), SNMP (Simple Network Management Protocol); various industry protocols also exist, such as power industry protocols, telecommunications dynamic ring monitoring Industry, building automation industry industry agreements, etc .; and various private agreements, a large number of custom protocols for equipment manufacturers.

2. The total amount of access equipment is huge. With the scale of networking and the popularity of 5G, the monitoring of millions of devices and even millions of devices is a problem that many industries need to face.

Summary of the invention

According to an aspect of the embodiments of the present disclosure, a method for accessing an IoT gateway is provided, including: an access server monitors a request reported by an IoT gateway to be accessed and information released by a registration center; The link establishment report reported by the networking gateway and / or the configuration information of the IoT gateway to be accessed released by the registration center, the access server saves the mapping model to the registration center, where the mapping model includes the identity of the IoT gateway to be accessed and Correspondence between the identifiers of the access servers; and the access server provides access services to the IoT gateway according to the mapping model.

According to another aspect of the embodiments of the present disclosure, there is provided an IoT gateway access device. The device includes a memory and a processor. A computer program is stored on the memory, and the computer program is executed by the processor. When the processor executes the method of accessing the Internet of Things gateway according to the present disclosure.

According to still another aspect of the embodiments of the present disclosure, there is provided a computer-readable storage medium on which a computer program is stored, and when the computer program is executed by a processor, the processor executes an Internet of Things gateway connection according to the present disclosure.入方法。 Into the method.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a flowchart of an IoT gateway access method according to an embodiment of the present disclosure.

FIG. 2 is a schematic structural diagram of an IoT gateway access system according to an embodiment of the present disclosure.

FIG. 3 is a timing diagram of preemption by an access server according to an embodiment of the present disclosure.

FIG. 4 is a timing diagram of an unavailable access server according to an embodiment of the present disclosure.

FIG. 5 is a schematic structural diagram of an IoT gateway access device according to an embodiment of the present disclosure.

detailed description

In order to make the technical problems, technical solutions, and beneficial effects to be more clearly understood by the present disclosure, the present disclosure will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present disclosure and are not intended to limit the present disclosure.

The link management between the IoT gateway and the access system is the basis of the IoT service provision domain. In the current mainstream IP-based networking, there are many types of access protocols and the total number of access devices in the IoT link management. Many constraints, such as huge, cause the existing IoT gateway access link to have low fault tolerance, is not conducive to capacity expansion, and does not have high availability.

In view of this, as shown in FIG. 1, an embodiment of the present disclosure provides a method for accessing an IoT gateway, which may include steps S11 to S13.

In step S11, the access server monitors the request reported by the to-be-connected IoT gateway and the information released by the registration center.

According to an embodiment of the present disclosure, before the access server listens to a request to be reported by the access IoT gateway and information released by the registration center, the method may further include: registering the access server in the registration center.

According to the embodiment of the present disclosure, the access server queries whether a cluster leader (Leader) server exists in the registration center. If the Leader server does not exist, the access server preempts and registers as the Leader server; if the access server preempts successfully, it registers in The center is registered as a leader server; if the access server preemption fails, that is, the leader server is preempted by another server, it is registered as a follower server in the registration center; if the leader server already exists, it is registered as a follower server in the registration center.

According to the embodiment of the present disclosure, the configuration information of the IoT gateway released by the registration center can be configured through the Leader server. For example: The Leader server configures the IoT gateway to be accessed to the registration center.

In step S12, when the access server listens to the link establishment request reported by the IoT gateway to be accessed and / or when the access server listens to the configuration information of the IoT gateway to be accessed issued by the registration center , And save the mapping model of the identity of the IoT gateway and the identity of the access server to the registration center.

According to the embodiment of the present disclosure, the format of the mapping model of the identifier of the IoT gateway and the identifier of the access server may be: (the identifier of the IoT gateway, the server identifier) The identifier of the IoT gateway and the identifier of the access server in the mapping model are one One corresponding, but one access server can provide access servers for multiple IoT gateways.

In step S13, an access service is provided to the IoT gateway according to the mapping model of the identity of the access server and the identity of the IoT gateway.

According to the embodiments of the present disclosure, providing access services to the IoT gateway includes, but is not limited to, the establishment of a link between the access server and the IoT gateway, the processing of data sent by the IoT gateway, issuing commands to the IoT gateway, adding or deleting IoT gateway, configuration of IoT gateway communication parameters and protocol types, etc.

According to the embodiment of the present disclosure, before the access server monitors the request reported by the access IoT gateway and the information released by the registration center, the method may further include: configuring the first IoT gateway support number in the access server.

According to the embodiment of the present disclosure, the first IoT gateway support number is the maximum value of the supported IoT gateway when the access server actively establishes a link with the IoT gateway. When the maximum value is exceeded, the access server is no longer connected with the new The networking gateway establishes the link.

According to the embodiment of the present disclosure, when the access server monitors the link establishment request reported by the IoT gateway to be accessed and / or the access server monitors the configuration information of the IoT gateway to be accessed released by the registration center Next, the step of saving the mapping model of the identity of the IoT gateway and the identity of the access server to the registration center includes: when the access server listens to the configuration information of the IoT gateway released by the registration center, querying the saved information in the registration center Map the model and calculate the number of IoT gateways managed by the access server; map the identity of the IoT gateway and the identity of the access server according to the number of IoT gateways managed by the access server and the number of first IoT gateway support The model is saved to the registry.

As an example, assuming that the configured first IoT gateway support number is s, after querying the mapping model saved in the registration center, calculation is performed according to formula (1).

x _min = min ((x ₁ , x ₂ , ... x _n )) (1)

Wherein, x _i is the number of all things the gateway access server management i, x _i can be obtained by traversing (IOT gateway identification, server identification) mapping model. If the monitored access server is one of the smallest number of servers or servers that manages the IoT gateway, and at the same time: x _min ≤s; the access server preempts the monitored IoT gateway. The mapping model of the identity of the gateway and the identity of the access server is saved to the registration center.

According to the embodiment of the present disclosure, after the access service is provided to the IoT gateway according to the mapping model of the identification of the access server and the identification of the IoT gateway, the method may further include: when the access server is unavailable, starting The backup server of the access server, and republish the configuration information of the IoT gateway managed by the access server in the registration center.

According to the embodiment of the present disclosure, if the Leader server is unavailable, all access servers (including the Leader server) perform Leader election again, and the election is still preemptive. This requires all Follower servers to monitor the status of the Leader server, which can be implemented specifically through a registration center, or each Follower server can be monitored directly point-to-point. After the new Leader server preempts successfully, the new Leader server sends a message to the standby server (if there is a standby server), instructing the standby server to listen to the IoT gateway configuration information of the registration center.

According to the embodiment of the present disclosure, the new Leader server finds all the IoT gateways managed by the unavailable access server through the registration center, re-publishes the IoT gateway change information in the registration center, and all access servers need to re-preempt. In this case, there will be a lot of changed IoT gateways, so the access server can preempt multiple IoT gateways at once, which improves the switching efficiency in high availability scenarios.

According to an embodiment of the present disclosure, before the access server monitors a request to be reported by the access IoT gateway and information released by the registration center, the method may further include: configuring a load balancer for the access server, and configuring the load balancer in the load balancer. Number of second IoT gateway support.

According to the embodiment of the present disclosure, the load balancer is a software / hardware load balancer, and the load balancing algorithm in the software / hardware load balancer can refer to the prior art, which is not limited herein.

According to the embodiment of the present disclosure, the second IoT gateway support number is the maximum value of the IoT gateway when the IoT gateway actively establishes a link with the access server. When the maximum value is exceeded, the load balancer no longer allocates the IoT The gateway is connected to the access server.

According to the embodiment of the present disclosure, the step of the access server monitoring the request reported by the IoT gateway to be accessed includes: the access server monitors the link establishment request of the IoT gateway through the load balancer.

According to the embodiments of the present disclosure, when the access server listens to the link establishment request of the IoT gateway to be accessed and / or when the access server listens to the configuration information of the IoT gateway to be accessed issued by the registration center, The step of saving the mapping model of the identity of the IoT gateway and the identity of the access server to the registration center includes: monitoring, by the load balancer, the access server to establish a link request to the IoT gateway to be accessed; and in the IoT When the number of gateways is not greater than the number supported by the second IoT gateway, the mapping model of the identity of the IoT gateway and the identity of the access server is saved to the registration center.

According to the embodiment of the present disclosure, after the access service is provided to the IoT gateway according to the mapping model of the identification of the access server and the identification of the IoT gateway, the method may further include: when the access server is unavailable, the load The equalizer distributes the link establishment request to be connected to the IoT gateway to the backup server of the access server or other access server.

According to the embodiment of the present disclosure, when the load balancer monitors that the status of the access server is unavailable, it allocates a link establishment request from the IoT gateway to a backup server or other access server, and reconnects with the access server at the IoT gateway. When a link is established, the original mapping model is overwritten.

According to the embodiment of the present disclosure, the step of saving the mapping model of the identity of the IoT gateway and the identity of the access server to the registration center includes: mapping the identity of the IoT gateway, the identity of the access server, and a mapping model of preset field values. Save to the registry.

According to the embodiment of the present disclosure, when the scenario where the access server actively establishes a link with the IoT gateway and the scenario where the IoT gateway actively establishes a link with the access server coexist, in order to ensure the mapping of the IoT gateway to the server in the registry, The only thing that can be added is the preset field value when the registry stores the mapping. For example, in the scenario where the access server actively establishes a link with the IoT gateway, the stored mapping model may be (IoT gateway ID, server identification, downlink); in the scenario where the IoT gateway actively establishes a link with the access server, the stored The mapping model can be (Internet of things gateway identification, server identification, uplink); one access server can still provide access services for multiple IoT gateways.

In order to better explain this embodiment, the IoT gateway access will be described in detail below with reference to FIGS. 2 to 4.

As shown in Figure 2, the access system of the IoT gateway includes a registration center and N access servers. The registration center is implemented by distributed data services. All access servers and registration centers form a cluster. The dashed lines in the figure represent data. flow.

There are many types of access protocols for link management between the IoT gateway and the access system. From the interaction method, all protocols can be divided into two types: A) The access server actively establishes a link with the IoT gateway and maintains the IoT gateway. Protocols for networking gateway links are typically REST and SNMP. B) The IoT gateway actively establishes a link with the access server and maintains the protocol of the IoT gateway link, typically MQTT and AMQP, etc .; therefore, in the link management, due to the different entities that actively implement access, There are many access scenarios.

The first scenario is a scenario in which an access server actively establishes a link with an IoT gateway.

As shown in FIG. 3, firstly, an IoT gateway to be accessed is configured into a registration center through a Leader server. When an access server (whether a Leader server or a Follower server) joins the cluster, it listens to the IoT gateway configuration change information released by the registration center. After listening to the IoT gateway configuration information released by the registration center, it preemptively sets the server's unique The ID is filled in the access server information item of the newly added gateway mapping in the registration center. The mapping is unique. The gateway and server have an n-to-1 relationship, and the format is (Internet of things gateway ID, server ID).

The preempted access server starts to establish a link with the IoT gateway and subsequent link management (provided that the link information of the IoT gateway has been configured). The data sent by the IoT gateway is subsequently processed by the preempted access server; for the operation and maintenance and management control commands of the device, it can be determined by querying the mapping model of the IoT gateway and the access server stored in the registration center. Access server processing.

After listening to the IoT gateway configuration information released by the registration center, the access server first queries the registration center to calculate the number of IoT gateways managed by the access server. If the access server is ranked last, preemption is performed. The specific calculation formula is formula (1).

x _min = min ((x ₁ , x ₂ , ... x _n )) (1)

Wherein, x _i is the number of all things the gateway access server management i, x _i can be obtained by traversing (IOT gateway identification, server identification) mapping model.

Through the aforementioned load balancing strategy, when a new access server is added to the cluster, the IoT gateway configuration information of the registration center can be monitored to achieve automatic expansion.

As shown in FIG. 4, when the Leader server is unavailable, all access servers (including the Leader server) are re-informed for Leader election, and the election is still preemptive. This requires all Follower servers to monitor the status of the Leader server, which can be achieved through the registration center, or each Follower server can be monitored directly point-to-point.

The Leader server enables the backup access server, and the backup access server starts to monitor the IoT gateway configuration information of the registration center.

The Leader server finds all IoT gateways that cannot be managed by the Leader server through the registration center, republishes the IoT gateway change information in the registration center, and all access servers need to re-preempt. In this case, there will be a lot of changed IoT gateways, so the access server can preempt multiple IoT gateways at once, which improves the switching efficiency in high availability scenarios.

The second scenario is a scenario in which the IoT gateway actively establishes a link with the access server.

After the IoT gateway actively establishes a link with the access server, the mapping between the unique identifier of the IoT gateway and the server is saved to the registration center. The mapping is unique. The IoT gateway and server have an n-to-1 relationship, and the format is (IoT Gateway ID, server ID).

The access server processes the data sent from the IoT gateway actively. At the same time, if there is a command issued from the upper-level operation and maintenance management system, you only need to query the mapping of the IoT gateway to the server saved by the registration center to know which one. The access server processes the delivery.

In this scenario, a dedicated software / hardware load balancer is used to configure an appropriate load balancing algorithm to meet the application scenario.

Through the foregoing steps, add a new access server to the cluster and configure it in a load balancer to achieve capacity expansion.

When the access server is unavailable, the load balancer distributes the link establishment request of the IoT gateway to the backup server or other access server.

In the third scenario, the access server actively establishes a link with the IoT gateway and the IoT gateway actively establishes a link with the access server.

When performing load balancing, there will be the same access server, which has both the IoT gateway access in the first scenario and the IoT gateway access in the second scenario. In this case, you can configure the ratio of gateways in these two scenarios. Generally, the first scenario uses short connections, so a single physical server can support more connections at the same time; while the second scenario is mostly long connections, so the number of connections supported at the same time is small. Therefore, in the load balancing in the first scenario, the maximum value of the supported IoT gateway needs to be configured. If this value is exceeded, the access server no longer participates in the preemption of the new IoT gateway. In the second scenario, the software / Related load balancing policies are configured in the hardware load balancer to ensure that the maximum number of such IoT gateways does not exceed the upper limit of access server capabilities.

With the aforementioned load balancing, as long as a new access server is added to the cluster and corresponding configuration is performed in the load balancer, capacity expansion can be completed.

In this hybrid scenario, when an access server becomes unavailable, on the one hand, all IoT gateways managed by the server are searched for, and information about the changes in the IoT gateway is published to re-preempt; on the other hand, the software / hardware load balancer immediately switches the IoT The gateway reconnection request is forwarded to the standby server or other access server.

In the fourth scenario, the coexistence scenario where the access server actively establishes a link with the IoT gateway and the IoT gateway actively establishes a link with the access server.

For this coexistence scenario, it is necessary to ensure the unique mapping of the IoT gateway to the server in the registration center. When storing the mapping in the registration center, set a field value: uplink / downlink. That is, the mapping model stored in the first scenario may be (Internet of Things gateway identification, server identification, downlink), and the mapping model stored in the second scenario may be (Internet of things gateway identification, server identification, uplink). Subsequent load balancing, capacity expansion, and high availability are similar to the foregoing, and will not be repeated here.

The method for accessing the Internet of Things gateway provided by the embodiment of the present disclosure provides an access service to the Internet of Things gateway by monitoring the link establishment request of the Internet of Things gateway and the configuration information of the Internet of Things gateway issued by the registration center; the Internet of Things gateway access link is fault tolerant High performance, good capacity expansion and high availability.

As shown in FIG. 5, an embodiment of the present disclosure further provides an IoT gateway access device, which may include a memory 21 and a processor 22. When the memory 21 stores a computer program, when the computer program is executed by the processor 22, the processor 22 executes the method for accessing the Internet of Things gateway according to the embodiments of the present disclosure.

An embodiment of the present disclosure further provides a computer-readable storage medium on which a computer program is stored. When the computer program is executed by a processor, the processor executes the method for accessing the Internet of Things gateway according to the embodiments of the present disclosure.

Those of ordinary skill in the art can understand that all or some of the steps, systems, and functional modules / units in the devices disclosed in the methods above can be implemented as software, firmware, hardware, and appropriate combinations thereof. In a hardware implementation, the division between functional modules / units mentioned in the above description does not necessarily correspond to the division of physical components; for example, one physical component may have multiple functions, or one function or step may be composed of several physical The components execute cooperatively. Some or all physical components can 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). As is known to those of ordinary skill in the art, the term computer storage medium includes volatile and non-volatile implemented in any method or technology used to store information, such as computer-readable instructions, data structures, program modules or other data. Removable, removable and non-removable media. Computer storage media includes, but is not limited to, RAM, ROM, EEPROM, flash memory or other memory technologies, CD-ROM, digital versatile disk (DVD) or other optical disk storage, magnetic cartridges, magnetic tape, disk storage or other magnetic storage devices, or may Any other medium used to store desired information and which can be accessed by a computer.

The embodiments of the present disclosure have been described above with reference to the accompanying drawings, and thus do not limit the scope of rights of the present disclosure. Any modification, equivalent replacement, and improvement made by those skilled in the art without departing from the scope and substance of the present disclosure shall fall within the scope of rights of the present disclosure.

Claims

An Internet of Things gateway access method includes:

The access server monitors the requests reported by the IoT gateway to be accessed and the information released by the registration center;

In response to listening to the link establishment request reported by the IoT gateway to be accessed and / or the configuration information of the IoT gateway to be published issued by the registration center, the access server saves the mapping model to all The registration center, wherein the mapping model includes a correspondence between an identifier of the IoT gateway to be accessed and an identifier of the access server; and

The access server provides an access service to the IoT gateway to be accessed according to the mapping model.
The method of accessing an IoT gateway according to claim 1, wherein before the step of the access server monitoring the request reported by the IoT gateway to be accessed and the information released by the registration center, the method further include:

The access server configures its own number of first IoT gateway support,

The first IoT gateway support number is a maximum value of the number of IoT gateways that can be managed when the access server actively establishes a link.
The method for accessing an IoT gateway according to claim 2, wherein in response to monitoring the link establishment request and / or the configuration information, the access server saves the mapping model to the registration center The steps include:

In response to monitoring the configuration information, the access server queries the mapping model that the registration center has saved;

According to the mapping model saved by the registration center, the access server determines that the number of IoT gateways managed by the access server by actively establishing a link is less than the number supported by the first IoT gateway; and

The access server saves the mapping model to the registration center.
The method for accessing an IoT gateway according to claim 3, wherein after the step of providing, by the access server, an access service to the IoT gateway to be accessed according to the mapping model, the method further comprises :

In response to the access server being unavailable, the access server starts a backup server of the access server and republishes the configuration information of the IoT gateway managed by the access server to the registration center.
The method for accessing an IoT gateway according to claim 1, wherein before the access server monitors a request reported by the IoT gateway to be accessed and information released by the registration center, the method further comprises:

The access server configures its own second IoT gateway support number in a load balancer, wherein the second IoT gateway support number is an object that the access server can manage when the IoT gateway actively establishes a link. The maximum number of networked gateways.
The method for accessing an IoT gateway according to claim 5, wherein the step of the access server monitoring the request reported by the IoT gateway to be accessed and the information released by the registration center comprises:

The access server monitors, through the load balancer, a request reported by the IoT gateway to be accessed, and

In response to monitoring the link establishment request and / or the configuration information, the step of the access server saving the mapping model to the registration center includes:

In response to monitoring the link establishment request through the load balancer, the access server determines that the number of IoT gateways actively established by the IoT gateway to manage link is less than the number supported by the second IoT gateway; and

Save the mapping model to the registry.
The method of accessing an IoT gateway according to claim 5, wherein after the step of providing, by the access server, an access service to the IoT gateway to be accessed according to the mapping model, the method further comprises :

In response to the access server being unavailable, the access server instructs the load balancer to send the link establishment request of the IoT gateway to be accessed to a backup server or other access server of the access server .
The method for accessing an IoT gateway according to claim 1, wherein before the access server monitors a request reported by the IoT gateway to be accessed and information released by the registration center, the method further comprises:

The access server is registered in the registration center.
The method for accessing an IoT gateway according to any one of claims 1 to 8, wherein the step of the access server saving the mapping model to the registration center comprises:

The access server saves the correspondence between the identifier of the IoT gateway to be accessed and the identifier of the access server, and a preset field value to the registration center.
An Internet of Things gateway access device includes a memory and a processor, and when the computer program is stored in the memory, the processor executes any one of claims 1 to 9 when the computer program is executed by the processor. The method for accessing the IoT gateway according to the item.
A computer-readable storage medium stores a computer program thereon, and when the computer program is executed by a processor, the processor executes the method for accessing an Internet of Things gateway according to any one of claims 1 to 9.