WO2012024882A1 - Method and system for backuping wireless sensor network gateways - Google Patents

Abstract

A method for backuping Wireless Sensor Network (WSN) gateways is provided in the present invention. A WSN connects with a communication network through the WSN gateways; backup WSN gateways are set for the WSN gateways. The method includes: supervising the currently working WSN gateways; when the working WSN gateways are faulty, making the backup WSN gateways of the faulty WSN gateways replace the faulty WSN gateways. A system for backuping the WSN gateways is also provided in the present invention. The system is applied to the network in which the WSN connects with the communication network through the WSN gateways, and includes: a setting unit used to set the backup WSN gateways for the WSN gateways, a supervision unit used to supervise the currently working WSN gateways, a determination unit used to determine whether the working WSN gateways are faulty, and trigger a replacement unit when the working WSN gateways are faulty, and the replacement unit used to make the backup WSN gateways of the faulty WSN gateways replace the faulty WSN gateways. The present invention guarantees the normal and reliable operation of the combination network which consists of the WSN and the communication network.

Description

 Wireless sensor network gateway backup method and system

 The present invention relates to a WSN gateway backup technology in a Wireless Sensor Network (WSN), and more particularly to a backup method and system for a wireless sensor network gateway. Background technique

 As a combination of computing, communication and sensor technologies, WSN is a new information acquisition and processing technology. WSN and telecom network combination, such as second generation (2G, 2nd Generation) mobile communication, third generation (3G, 3rd Generation) mobile communication, xDSL (x Digital Subscriber Line), FTTx (Fiber To The x, x is home , building, node, premises), wireless access, satellite/microwave, etc., can make the wireless sensor network as an extension of the existing network, thereby expanding the ability of the communication network to extend the communication object from person to physical world. Has a good development prospects. When WSN is combined with the existing telecommunication network, the WSN-aware data can be effectively transmitted to the data center. By sorting and analyzing the data, the way in which humans can obtain the data of the natural world can be greatly changed. The WSN node performs centralized management to solve the problem that the WSN nodes currently dispersed everywhere are difficult to manage. The combination of a wireless sensor network and a telecommunications network is generally a wireless sensor network connected to a telecommunications network platform through a WSN gateway.

 The telecommunication network platform includes functional entities such as a management platform and a service platform. The management platform is responsible for implementing the device management function; the business platform is responsible for integrating the services provided by each service provider and providing it to the end users, and managing the use of the business by the user, and is responsible for completing the entire business process.

 As a device connecting the wireless sensor network and the telecommunication network, the WSN gateway mainly performs functions such as wireless sensor network configuration and networking, protocol conversion, address mapping, and data forwarding.

The WSN node is connected to the telecommunication network platform through the WSN gateway device. WSN node device The sensor node of the wireless sensor network is connected to the WSN gateway by one or more hops. The terminal device is responsible for collecting and uploading data, as well as receiving and executing commands. The number of devices that make up a WSN is as few as a few hundreds, and devices can be networked in a star, tree, or mesh (MESH) mode, some of which have strong networking and data forwarding capabilities. . The WSN node is located at the very end of the extended network.

 Due to the large number of WSN nodes, a WSN network often has multiple WSN gateways. In order to ensure the reliability of data transmission and the normal operation of the network, it is necessary to backup the WSN gateways or to have the functions of mutual backup of these WSN gateways. In the prior art, the information in the WSN gateway can be saved in the management platform. When the WSN gateway fails and the new device is replaced, the information in the management platform can be conveniently imported into the new WSN gateway device. However, in the case of multiple WSN gateways, if the information of multiple WSN gateways is all stored in the management platform, the burden on the management platform must be increased. At the same time, when a WSN gateway fails, in order not to stop the operation of the system, it is hoped that the WSN gateway will not be replaced temporarily, and other WSN gateways temporarily take over the faulty WSN gateway to work, thus ensuring normal operation of the system and enhancing reliability. .

 However, because the combination technology of WSN and telecommunication network is still in the research stage, there is no technology related to dynamic backup between WSN gateways. Summary of the invention

 In view of this, the main purpose of the present invention is to provide a backup method and system for a wireless sensor network gateway, which implements backup of the WSN gateway by setting a backup WSN gateway, thereby ensuring the robustness of the connection between the communication network and the WSN.

 In order to achieve the above object, the technical solution of the present invention is achieved as follows:

 A method for backing up a wireless sensor network gateway, the WSN is connected to the communication network through the WSN gateway; and the backup WSN gateway is set for the WSN gateway; the method further includes:

Monitor the currently working WSN gateway, when the working WSN gateway fails, The backup WSN gateway of the barrier WSN gateway takes over the failed WSN gateway.

 Preferably, setting the backup WSN gateway for the WSN gateway is specifically: setting a primary WSN gateway and a secondary WSN gateway, the primary WSN gateway storing at least configuration information from the WSN gateway, and information and WSN of the WSN node managed by the WSN gateway Configuration parameter

 The currently working WSN gateway is monitored. When the working WSN gateway fails, the backup WSN gateway of the failed WSN gateway takes over the fault. The WSN gateway is specifically:

 The primary WSN gateway periodically monitors the status of the slave WSN gateway, or periodically reports the status information from the WSN gateway to the primary WSN gateway;

 When the primary WSN gateway determines that the working slave WSN gateway status is abnormal, the primary WSN gateway takes over the abnormal slave WSN gateway operation.

 Preferably, setting the backup WSN gateway for the WSN gateway is specifically: setting the primary WSN gateway and the secondary WSN gateway; in the secondary WSN gateway, setting each WSN gateway and the other at least one WSN gateway to each other as a backup WSN gateway; A backup policy comparison table is set in the primary WSN gateway, and the backup policy comparison table includes at least an identifier from the WSN gateway, information of the WSN node managed by the slave WSN gateway, WSN configuration parameters, and a backup as the slave WSN gateway. The identity of the WSN gateway;

 The currently working WSN gateway is monitored. When the working WSN gateway fails, the backup WSN gateway of the failed WSN gateway takes over the fault. The WSN gateway is specifically:

 The primary WSN gateway periodically monitors the status of the working slave WSN gateway, or periodically reports its own status information from the working WSN gateway to the primary WSN gateway; when the primary WSN gateway determines that the working slave WSN gateway status is abnormal, the notification is An abnormal backup WSN gateway backed up from the WSN gateway takes over the work of the abnormal WSN gateway.

Preferably, setting a backup WSN gateway for the WSN gateway is specifically: setting, in the WSN gateway, each WSN gateway and another at least one WSN gateway as a backup WSN gateway; wherein a backup policy comparison table is set in the communication network, The backup policy comparison table includes at least The identifier of the WSN gateway, the information of the WSN node managed by the WSN gateway, the WSN configuration parameter, and the correspondence between the backup WSN gateways;

 The currently working WSN gateway is monitored. When the working WSN gateway fails, the backup WSN gateway of the failed WSN gateway takes over the fault. The WSN gateway is specifically:

 The communication network periodically monitors the status of the currently working WSN gateway, or periodically reports the status information to the communication network by the working WSN gateway; when the communication network determines that the working WSN gateway status is abnormal, the notification is abnormal. The backup WSN gateway backed up by the WSN gateway takes over the work of the abnormal WSN gateway.

 Preferably, after the backup WSN gateway takes over the abnormal WSN gateway, the method further includes:

 The primary WSN gateway or the communication network notifies the WSN node managed by the abnormal WSN gateway to report data and receive an instruction through the backup WSN gateway;

 Alternatively, the backup WSN gateway notifies the WSN node managed by the abnormal WSN gateway to report data and receive an instruction through the backup WSN gateway.

 Preferably, the method further includes:

 The status information of the "^" on the WSN gateway is abnormal or the WSN gateway does not have the status information in the predetermined time interval to determine the WSN gateway failure.

 Preferably, the method further includes:

 When a new WSN node joins the WSN, the primary WSN gateway updates the backup policy comparison table, and notifies the new WSN gateway to which the WSN node belongs;

 When a new WSN gateway joins the WSN, the primary WSN gateway updates the backup policy comparison table and notifies the new WSN gateway.

 Preferably, the method further includes:

When a new WSN node joins the WSN, the communication network updates the backup policy comparison table, and notifies the new WSN gateway to which the WSN node belongs; When a new WSN gateway joins the WSN, the communication network updates the backup policy comparison table and notifies the new WSN gateway to join.

 Preferably, the communication network is a telecommunication network platform, specifically a telecommunication network management platform or a service platform.

 Preferably, the primary WSN gateway communicates with the slave WSN gateway through a sensing network or through a communication network.

 A backup system of a wireless sensor network gateway is applied to a network in which a WSN is connected to a communication network through a WSN gateway, and the system includes a setting unit, a monitoring unit, a determining unit, and a relay unit;

 a setting unit, configured to set a backup WSN gateway for the WSN gateway;

 a monitoring unit, configured to monitor a currently working WSN gateway;

 a determining unit, configured to determine whether the working WSN gateway is faulty, triggering a relay unit when the fault occurs; and a relay unit for replacing the faulty WSN gateway with the backup WSN gateway of the faulty WSN gateway.

 Preferably, the setting unit further sets a primary WSN gateway and a secondary WSN gateway in the WSN gateway, where the primary WSN gateway stores at least configuration information from the WSN gateway, and information and WSN configuration of the WSN node managed by the WSN gateway. Parameter

 The monitoring unit is disposed in the primary WSN gateway, and periodically monitors the status of the slave WSN gateway, or obtains self-status information periodically reported by the slave WSN gateway;

 When the determining unit determines that the working slave WSN gateway is abnormal, the relay unit is triggered to work by the master WSN gateway to replace the abnormal slave WSN gateway.

Preferably, the setting unit further sets a primary WSN gateway and a secondary WSN gateway in the WSN gateway; and, in the secondary WSN gateway, sets each WSN gateway and another at least one WSN gateway as a backup WSN gateway; a backup policy comparison table is set in the primary WSN gateway, where the backup policy comparison table includes at least an identifier from the WSN gateway, Information from the WSN node managed by the WSN gateway, WSN configuration parameters, and the identity of the backup WSN gateway as the secondary WSN gateway;

 The monitoring unit is disposed in the primary WSN gateway, and further periodically monitors the status of the working slave WSN gateway, or obtains self-status information periodically reported by the working slave WSN gateway; the determining unit further determines the working slave WSN gateway. When the status is abnormal, the successor unit is triggered to take over the work of the abnormal WSN gateway for the abnormal backup WSN gateway backed up from the WSN gateway.

 Preferably, the setting unit is further configured to: in the communication network, set each WSN gateway and another at least one WSN gateway as a backup WSN gateway; wherein the communication network is provided with a backup policy comparison table, the backup The policy comparison table includes at least the identifier of the WSN gateway, the information of the WSN node managed by the WSN gateway, the WSN configuration parameter, and the correspondence between the backup WSN gateways;

 The monitoring unit is disposed in the communication network, and further periodically monitors the status of the currently working WSN gateway, or obtains self-status information periodically reported by the working WSN gateway; and the determining unit further determines that the working WSN gateway status is abnormal, triggering The replacement unit replaces the operation of the abnormal WSN gateway with a backup WSN gateway that is an abnormal WSN gateway backup.

 Preferably, the system further comprises:

 The notification unit is disposed in the primary WSN gateway or the communication network, or is disposed in the backup WSN gateway, and is configured to notify the WSN node managed by the abnormal WSN gateway to report data and receive an instruction through the backup WSN gateway. .

 Preferably, the status information of the determining unit on the WSN gateway is abnormal or the WSN gateway does not upload status information within a predetermined time interval to determine that the WSN gateway is faulty.

In the present invention, by setting up a backup WSN gateway for the WSN gateway, the connection robustness between the WSN and the communication network is ensured, that is, even if the WSN gateway fails, the WSN gateway can ensure that each WSN node in the WSN reports data and receives an instruction. . In the present invention, by setting The main WSN gateway is used to implement management between the backup WSN gateways. Of course, the WSN gateways can be managed by the service platform or the management platform of the communication network, so that when the current WSN gateway fails, Back up the WSN gateway to take over. The invention ensures the normal and reliable operation of the combined network of the WSN and the communication network. DRAWINGS

 1 is a schematic diagram of a network structure in which a telecommunication network and a WSN are combined;

 2 is a flow chart of a backup method of a WSN gateway according to the present invention;

 3 is another flow chart of a backup method of a WSN gateway according to the present invention;

 FIG. 4 is a schematic structural diagram of a backup system of a wireless sensor network gateway according to the present invention. detailed description

 The basic idea of the present invention is: By setting up a backup WSN gateway for the WSN gateway, to ensure the robustness of the connection between the WSN and the communication network, that is, even if the WSN gateway fails, the WSN gateway can ensure that each WSN node in the WSN reports data. And receive instructions. In the present invention, the management of the backup WSN gateways is implemented by setting the main WSN gateway. Of course, the WSN network can be mutually backed up through the service platform or the management platform of the communication network.

 The present invention will be further described in detail below with reference to the accompanying drawings.

The application scenario of the present invention is a network in which the communication network shown in FIG. 1 is combined with a WSN. FIG. 1 is a schematic diagram of a network structure in which a telecommunication network and a WSN are combined. As shown in FIG. 1, the telecommunication network includes a management platform and a service platform, and management The platform stores information about the correspondence between the WSN and its location. When given the location information of the wireless sensor network, the wireless sensor network management platform can determine whether the wireless sensor network managed by the wireless sensor network management platform exists in the location. And can identify the wireless sensor network at that location. The above location information may also be other identification information of the wireless sensor network, such as a name and the like. The WSN gateway is responsible for connecting the wireless sensor network and the telecommunication network, mainly performing protocol conversion, address resolution and mapping, and data forwarding functions. The WSN gateway can also integrate security and billing functions. The functions that the WSN gateway can support include: Support for data collaboration and aggregation within the sensor network; Support for one or more of 2G mobile communication, 3G mobile communication, xDSL, FTTx, broadband wireless access, satellite/microwave, etc. , the aggregated data is transmitted to the communication peer; the service platform and the remote management server support the WSN gateway device authentication and user authentication; support the service platform and the remote management server to the WSN gateway parameters and software configuration; support user authentication and service security , equipment management security mechanism.

 The service platform is a functional entity that operates and manages the services combined with the wireless sensor network in the telecommunication network. It is responsible for integrating the services provided by each service provider and providing them to the end users, and managing the use of the services by the users. The service platform cooperates with other functional entities in the telecommunication network to complete the entire service process according to the needs of different services, such as AAA, Authentication Authorization and Accounting. The business platform may also be connected to a remote server through which network managers can update the business directly.

 In the present invention, the WSN node is a variety of sensors for performing sensing measurement, such as a temperature sensor, a humidity sensor, etc., which are distributed at various detection positions.

 It should be noted that the combined network of the communication network and the WSN is connected between the communication network and the WSN through the WSN gateway, and the WSN gateway implements protocol conversion between the communication network and the WSN, thereby implementing communication between the communication network and the WSN. .

Since the WSN gateway is the only node that implements the connection between the WSN and the communication network, it is necessary to set up a backup WSN gateway for the currently working WSN gateway, so that when the WSN gateway fails, the backup WSN gateway can be used to take over the currently working WSN gateway. To ensure that each WSN node in the WSN can still report data to the communication network, and receive various commands sent by the communication network. In the present invention, a communication network generally refers to a telecommunications network. When configuring the WSN gateway, the telecommunication network platform sets a WSN gateway as the primary WSN gateway, and the other is the secondary WSN gateway. The primary WSN gateway sets the backup WSN gateway for each backup from the WSN gateway. When a slave WSN gateway is not working properly, the backup WSN gateway backed up for it will take over the original slave WSN gateway. When the primary WSN gateway fails, the primary WSN gateway is replaced, and the primary WSN gateway information saved by the management platform 4 bar is imported to the new primary WSN gateway device. Of course, in the case of multiple WSN gateways, the primary WSN gateway and the secondary WSN gateway may not be set, but each WSN gateway is of the same level, and the work of each WSN gateway is coordinated by the telecommunication network platform.

 When setting the master/slave WSN gateway, the specific way to set up the backup WSN gateway for each WSN gateway includes: (1) being backed up by the master WSN gateway for all slave WSN gateways, or (2) setting the WSN gateway by the master WSN gateway. Back up each other.

 When the master/slave WSN gateway is not set, the telecommunications network platform sets a policy for mutual backup between the WSN gateways.

 When the primary WSN gateway backs up all the slave WSN gateways, at least the configuration information of each slave WSN gateway and the information of the WSN nodes it manages and the WSN configuration parameters are stored in the master WSN gateway. The primary WSN gateway periodically monitors the status of the slave WSN gateway or periodically reports its status to the primary WSN gateway from the WSN gateway. When the status of a slave WSN gateway is abnormal, the master WSN gateway will take over the abnormal slave WSN gateway and notify the WSN node managed by the WSN gateway to report data and receive commands through the master WSN gateway.

When the primary WSN gateway sets the backup between the WSN gateways, the primary WSN gateway establishes a backup policy comparison table according to the backup policy. The comparison table includes at least the WSN gateway identifier, the information of the WSN node shared by the WSN gateway, and the WSN configuration parameter. And the identity of the alternate WSN gateway that is backed up for the WSN gateway. The WSN node information stored by it and all the information of the WSN gateway for which it needs to be backed up (including WSN gateway information and information of WSN nodes managed by it, WSN configuration parameters, etc.) are saved from the WSN gateway. The main WSN gateway is regularly supervised Measure the status from the WSN gateway, or periodically from the WSN gateway to the main WSN gateway. When a slave WSN gateway status is abnormal, the master WSN gateway will notify the standby WSN gateway backed up from the WSN gateway to take over the work of the abnormal slave WSN gateway, and notify the WSN node managed by the WSN gateway to pass the WSN gateway backed up for it. Report data and receive instructions.

 When the master/slave WSN gateway is not set, the telecommunication network platform sets a strategy for mutual backup between the WSN gateways. The telecommunication network platform establishes a backup policy comparison table according to the backup policy. The comparison table includes at least the WSN gateway identifier, the information of the WSN node shared by the WSN gateway, the WSN configuration parameter, and the identifier of the standby WSN gateway that is backed up by the WSN gateway. The telecommunications network platform periodically monitors the status of each WSN gateway, or each WSN gateway periodically reports its status to the telecommunications network platform. When the status of a WSN gateway is abnormal, the telecommunication network platform notifies the backup WSN gateway that is backed up by the WSN gateway to take over the work of the abnormal WSN gateway, and notifies the WSN node managed by the WSN gateway to report data and receive the WSN gateway for its backup. instruction.

 The primary WSN gateway periodically monitors the status of the slave WSN gateway, or periodically reports its status from the WSN gateway to the primary WSN gateway, when an abnormality is displayed from the WSN gateway status or the primary WSN gateway does not receive the WSN gateway within a predetermined time interval. Feedback, it is considered that an exception may occur from the WSN gateway.

 Or, the telecommunication network platform periodically monitors the status of the WSN gateway, or the WSN gateway periodically reports its status to the telecommunication network platform. When the WSN gateway status is abnormal or the telecommunication network platform does not receive a WSN within a predetermined time interval. The feedback from the gateway suggests that a WSN gateway may be abnormal.

 When the master/slave WSN gateway is set, when a new WSN node joins the network, the master WSN gateway will update the lookup table and notify the changed WSN gateway and WSN node.

Alternatively, when a new WSN gateway joins the network, the telecommunication network management platform sets the new WSN gateway as the slave WSN gateway, and the main WSN gateway will update the original lookup table and notify the changed WSN gateway and the WSN node. Here, when a new WSN gateway joins the WSN, it can be The newly added WSN gateway sets the WSN gateways that are mutually backed up, and implements the corresponding backup configuration in the mutually backed up WSN gateways. At the same time, the backup policy comparison table is updated on the telecommunication network management platform or the main WSN gateway, and the newly added The correspondence between the WSN gateway and its backup gateway is added to the update backup policy comparison table. And monitoring the newly added WSN gateway. Specifically, for the newly added WSN gateway, the processing manner is similar to the initial configuration of the WSN gateway.

 In the present invention, when the backup WSN gateway is used to replace the currently abnormal working WSN gateway, the WSN node managed by the abnormal WSN gateway may be notified by the foregoing main WSN gateway or the communication network to report data and receive an instruction through the backup WSN gateway;

 Alternatively, the WSN gateway directly notified by the backup WSN gateway to the abnormal WSN gateway reports the data and receives the command through the backup WSN gateway. Specifically, after the backup WSN gateway takes over the currently abnormal WSN gateway, it sends a notification message to all WSN nodes that are currently connected to the WSN, to notify the WSN node to report data through itself.

 The communication between the primary WSN gateway and the secondary WSN gateway can be through a sensing network or through a telecommunications network.

 When the failed slave WSN gateway needs to be replaced, the required configuration information can be imported from the primary WSN gateway or the WSN gateway it backed up to the new slave WSN gateway device.

 When the master/slave WSN gateway is not set, when a new WSN node or a new WSN gateway is added to the network, the telecommunication network platform will update the lookup table and notify the changed WSN gateway and WSN node.

 When the failed WSN gateway needs to be replaced, the required configuration information can be imported from the telecommunication network platform or the WSN gateway it backed up to the new WSN gateway device.

 The telecommunication network platform may be a management platform that implements device management functions, or a service platform that is responsible for managing the entire business process.

The essence of the technical solution of the present invention will be further clarified by specific examples below. In this example, the technical solution is implemented by setting a primary WSN gateway and a secondary WSN gateway in the WSN gateway, where the primary WSN gateway acts as a backup gateway for the entire secondary WSN gateway. The main WSN gateway stores configuration information of all the slave WSN gateways and information of each WSN node managed by the WSN gateway. 2 is a flowchart of a method for backing up a WSN gateway according to the present invention. As shown in FIG. 2, the backup method of the WSN gateway of the present invention is specifically implemented by the following steps: Step 201: The primary WSN gateway saves the configuration of each slave WSN gateway. Information and information about WSN nodes it manages and WSN configuration parameters;

 Step 202: Monitor a status of the slave WSN gateway.

 This step may be that the primary WSN gateway periodically monitors the status of the slave WSN gateway, or it may be periodically forwarded from the WSN gateway to the primary WSN gateway.

 Step 203, Is there an abnormal gateway from the WSN? If not, step 202 is performed to monitor the status of the slave WSN gateway. If there is an abnormal WSN gateway, step 204 is performed; Step 204, the primary WSN gateway takes over the operation of the abnormal WSN gateway, and notifies the WSN node managed by the WSN gateway to report data and receive the command through the primary WSN gateway.

 When the primary WSN gateway sets the backup between the WSN gateways, the master WSN gateway establishes a comparison table, where the comparison table includes at least the WSN gateway identifier, the information of the WSN node shared by the WSN gateway, the WSN configuration parameter, and the WSN gateway. The ID of the backed up WSN gateway. The WSN node is saved from the WSN gateway and all the information of the WSN gateway it needs to back up (including the WSN gateway information and the information of the WSN nodes it manages, WSN configuration parameters, etc.). The primary WSN gateway periodically monitors the status of the slave WSN gateway, or periodically reports its status from the WSN gateway to the primary WSN gateway. When the status of a slave WSN gateway is abnormal, the master WSN gateway notifies the WSN gateway that is backed up from the WSN gateway to take over the work of the abnormal slave WSN gateway, and notifies the WSN node managed by the WSN gateway to report the WSN gateway that is backed up by it. Data and receive instructions.

In this example, by setting the primary WSN gateway in the WSN gateway and from the WSN gateway In the current technical solution, the master WSN gateway manages all the slave WSN gateways, and between the WSN gateways, each WSN gateway has at least one other slave WSN gateway as its own backup gateway, that is, backups from the WSN gateways. Gateway. The configuration information of the WSN gateway that is backed up by itself and the information of the WSN node managed by the WSN gateway are stored from the WSN gateway. FIG. 3 is another flowchart of a method for backing up a WSN gateway according to the present invention. As shown in FIG. 3, the backup method of the WSN gateway of the present invention is specifically implemented by the following steps:

 Step 301: Establish a backup policy comparison table in the primary WSN gateway.

 The backup policy comparison table includes at least a WSN gateway identifier, information of the WSN node shared by the WSN gateway, WSN configuration parameters, and an identifier of the WSN gateway backed up by the WSN gateway.

 Step 302: Save all information about the WSN node that it manages and the WSN gateway that it needs to back up from the WSN gateway (including the WSN gateway information and the information of the WSN node it manages, WSN configuration parameters, etc.).

 Step 303: Monitor a status of the slave WSN gateway.

 This step may be that the primary WSN gateway periodically monitors the status of the slave WSN gateway, or it may be periodically forwarded from the WSN gateway to the primary WSN gateway.

 Step 304, Is there an abnormality from the WSN gateway? If not, return to step 303 to periodically monitor the status of the slave WSN gateway. If there is an abnormal WSN gateway, step 305 is performed; Step 305, the WSN gateway backed up from the WSN gateway is notified to take over the abnormal operation of the slave WSN gateway, and the WSN node managed by the WSN gateway is notified to report data and receive through the backup WSN gateway. instruction.

The primary WSN gateway periodically monitors the status of the slave WSN gateway, or periodically reports its status from the WSN gateway to the primary WSN gateway, when an abnormality is displayed from the WSN gateway status or the primary WSN gateway does not receive the WSN from the WSN within a predetermined time interval. Feedback from the gateway determines that an exception may have occurred from the WSN gateway. In the present invention, in the case of multiple WSN gateways, the primary WSN gateway and the secondary WSN gateway may not be set, but each WSN gateway is of the same level, and the telecommunications network platform sets a policy for mutual backup between the WSN gateways. The telecommunication network platform establishes a backup policy comparison table according to the backup policy. The comparison table includes at least the WSN gateway identifier, the information of the WSN node shared by the WSN gateway, the WSN configuration parameter, and the identifier of the standby WSN gateway that is backed up by the WSN gateway. The telecommunications network platform periodically monitors the status of each WSN gateway, or each WSN gateway periodically reports its status to the telecommunications network platform. When the status of a WSN gateway is abnormal, the telecommunication network platform notifies the standby WSN gateway backed up by the WSN gateway to take over the work of the abnormal WSN gateway, and notifies the WSN node managed by the WSN gateway to pass the data on the WSN gateway backed up for it. And receive instructions.

 That is, in Figure 3, the functions implemented by the above-mentioned main WSN gateway can also be implemented by the telecommunication network platform. Specifically, the telecommunication network platform periodically monitors the status of the WSN gateway, or the WSN gateway periodically reports its status to the telecommunication network platform. When the WSN gateway status is abnormal or the telecommunication network platform does not receive a WSN gateway within a predetermined time interval. Feedback, it is considered that a WSN gateway may be abnormal.

 The backup system of the wireless sensor network gateway of the present invention is applied to a network in which a WSN and a communication network are combined. FIG. 4 is a schematic structural diagram of a backup system of a wireless sensor network gateway according to the present invention. As shown in FIG. 4, the wireless sensor network gateway of the present invention is The backup system includes a setting unit 40, a monitoring unit 41, a determining unit 42 and a relay unit 43;

 The setting unit 40 is configured to set a backup WSN gateway for the WSN gateway;

 The monitoring unit 41 is configured to monitor the currently working WSN gateway;

 The determining unit 42 is configured to determine whether the working WSN gateway is faulty, and trigger the replacing unit 43 when the fault occurs;

The successor unit 43 is configured to replace the faulty WSN gateway with a backup WSN gateway of the faulty WSN gateway. The setting unit 40 further includes a primary WSN gateway and a secondary WSN gateway in the WSN gateway, where the primary WSN gateway stores at least configuration information from the WSN gateway, and information of the WSN node managed by the WSN gateway and WSN configuration parameters;

 The monitoring unit 41 is disposed in the primary WSN gateway, and periodically monitors the status of the slave WSN gateway, or obtains self-status information periodically reported by the slave WSN gateway;

 When the determining unit 42 determines that the working slave WSN gateway is abnormal, the above-mentioned determining unit 43 is triggered to operate the slave WSN gateway with the master WSN gateway taking over the abnormality.

 The setting unit 40 further sets a primary WSN gateway and a secondary WSN gateway in the WSN gateway; and, in the secondary WSN gateway, sets each WSN gateway and another at least one WSN gateway as a backup WSN gateway; wherein A backup policy comparison table is set in the main WSN gateway, and the backup policy comparison table includes at least an identifier from the WSN gateway, information of the WSN node managed by the slave WSN gateway, WSN configuration parameters, and a backup WSN gateway as the slave WSN gateway. Identification

 The foregoing monitoring unit 41 is disposed in the primary WSN gateway, and further periodically monitors the status of the working slave WSN gateway, or obtains self-status information periodically reported by the working slave WSN gateway; the determining unit 42 further determines the working slave WSN gateway. When the status is abnormal, the above-mentioned successor unit 43 is triggered to take over the abnormal operation of the slave WSN gateway from the backup WSN gateway backed up by the WSN gateway.

 The setting unit 40 further includes, in the WSN gateway, setting a backup WSN gateway between each WSN gateway and another at least one WSN gateway; wherein a backup policy comparison table is set in the communication network, and the backup policy comparison table is At least the identifier of the WSN gateway, the information of the WSN node managed by the WSN gateway, the WSN configuration parameter, and the correspondence between the backup WSN gateways;

The monitoring unit 41 is disposed in the communication network, and further periodically monitors the status of the currently working WSN gateway, or obtains the status information periodically reported by the working WSN gateway; When the determining unit 42 further determines that the working WSN gateway status is abnormal, the above-mentioned successor unit 43 is triggered to take over the operation of the abnormal WSN gateway for the abnormal WSN gateway backup.

 The backup system of the wireless sensor network gateway of the present invention further includes: a notification unit (not shown) disposed on the primary WSN gateway or the communication network, based on the backup system of the wireless sensor network gateway shown in FIG. Or, in the backup WSN gateway, the WSN node managed by the WSN gateway for notifying the abnormality reports data and receives an instruction through the backup WSN gateway.

 The determining unit 42 determines that the WSN gateway is faulty because the status information of the "^" is abnormal on the WSN gateway or the WSN gateway does not have the status information within the predetermined time interval.

 It should be understood by those skilled in the art that the backup system of the wireless sensor network gateway of the present invention is designed to implement the foregoing backup method of the wireless sensor network gateway of the present invention. The implementation functions of the foregoing processing units and sub-processing units can be referred to the foregoing method. Understand the relevant description. The functions of each of the processing units and the sub-processing units described above may be implemented by a corresponding integrated circuit or by a corresponding computer program on a processor having a program execution function.

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

Claims

Claim  A method for backing up a wireless sensor network gateway, the wireless sensor network (WSN) is connected to the communication network through the WSN gateway; and the method is: setting a backup WSN gateway for the WSN gateway; the method further includes:  The currently working WSN gateway is monitored. When the working WSN gateway fails, the backup WSN gateway of the failed WSN gateway takes over the failed WSN gateway.  2. The method according to claim 1, wherein the setting the backup WSN gateway for the WSN gateway is specifically: setting a primary WSN gateway and a secondary WSN gateway, wherein the primary WSN gateway stores at least configuration information of the secondary WSN gateway, and Information of the WSN node managed by the WSN gateway and WSN configuration parameters;  The currently working WSN gateway is monitored. When the working WSN gateway fails, the backup WSN gateway of the failed WSN gateway takes over the fault. The WSN gateway is specifically:  The primary WSN gateway periodically monitors the status of the slave WSN gateway, or periodically reports the status information from the WSN gateway to the primary WSN gateway;  When the primary WSN gateway determines that the working slave WSN gateway status is abnormal, the primary WSN gateway takes over the abnormal slave WSN gateway operation.  3. The method according to claim 1, wherein the setting of the backup WSN gateway for the WSN gateway is specifically: setting a primary WSN gateway and a secondary WSN gateway; and setting, from the WSN gateway, each WSN gateway and another at least one The WSN gateways are mutually backup WSN gateways; wherein the primary WSN gateway is provided with a backup policy comparison table, and the backup policy comparison table includes at least the identifier of the WSN gateway and the information of the WSN node managed by the slave WSN gateway. , WSN configuration parameters and an identifier of the backup WSN gateway as the slave WSN gateway;  The currently working WSN gateway is monitored. When the working WSN gateway fails, the backup WSN gateway of the failed WSN gateway takes over the fault. The WSN gateway is specifically: The primary WSN gateway periodically monitors the status of the working slave WSN gateway, or is operated by The WSN gateway periodically reports its own status information to the primary WSN gateway. When the primary WSN gateway determines that the working WSN gateway status is abnormal, it notifies the backup WSN gateway that is abnormally backed up from the WSN gateway to take over the abnormal WSN gateway operation.  The method according to claim 1, wherein the setting of the backup WSN gateway for the WSN gateway is specifically: setting, in the WSN gateway, each WSN gateway and another at least one WSN gateway as a backup WSN gateway; A backup policy comparison table is configured in the communication network, where the backup policy comparison table includes at least the identifier of the WSN gateway, the information of the WSN node managed by the WSN gateway, the WSN configuration parameter, and the correspondence between the backup WSN gateways;  The currently working WSN gateway is monitored. When the working WSN gateway fails, the backup WSN gateway of the failed WSN gateway takes over the fault. The WSN gateway is specifically:  The communication network periodically monitors the status of the currently working WSN gateway, or periodically reports the status information to the communication network by the working WSN gateway; when the communication network determines that the working WSN gateway status is abnormal, the notification is abnormal. The backup WSN gateway backed up by the WSN gateway takes over the work of the abnormal WSN gateway.  The method according to any one of claims 2 to 4, wherein, after the backup WSN gateway takes over the abnormal WSN gateway, the method further includes:  The primary WSN gateway or the communication network notifies the WSN node managed by the abnormal WSN gateway to report data and receive an instruction through the backup WSN gateway;  Alternatively, the backup WSN gateway notifies the WSN node managed by the abnormal WSN gateway to report data and receive an instruction through the backup WSN gateway.  The method according to claim 5, wherein the method further comprises: the status information of the "^" on the WSN gateway is abnormal, or the WSN gateway does not upload the status information within a predetermined time interval, and determines the WSN gateway. malfunction. The method according to claim 2 or 3, wherein the method further comprises: When a new WSN node joins the WSN, the primary WSN gateway updates the backup policy comparison table, and notifies the new WSN gateway to which the WSN node belongs;  When a new WSN gateway joins the WSN, the primary WSN gateway updates the backup policy comparison table and notifies the new WSN gateway.  The method according to claim 5, wherein the method further comprises: when a new WSN node joins the WSN, the communication network updates the backup policy comparison table, and notifies the newly added WSN gateway to which the WSN node belongs. ;  When a new WSN gateway joins the WSN, the communication network updates the backup policy comparison table and notifies the new WSN gateway.  The method according to claim 5 or 8, wherein the communication network is a telecommunication network platform, specifically a telecommunication network management platform or a service platform.  10. The method according to claim 7, wherein the primary WSN gateway communicates with the slave WSN gateway through a sensing network or through a communication network.  A backup system for a wireless sensor network gateway, which is applied to a network in which a WSN is connected to a communication network through a WSN gateway, wherein the system includes a setting unit, a monitoring unit, a determining unit, and a relay unit;  a setting unit, configured to set a backup WSN gateway for the WSN gateway;  a monitoring unit, configured to monitor a currently working WSN gateway;  a determining unit, configured to determine whether the working WSN gateway is faulty, triggering a relay unit when the fault occurs; and a relay unit for replacing the faulty WSN gateway with the backup WSN gateway of the faulty WSN gateway. The system according to claim 11, wherein the setting unit further sets a primary WSN gateway and a secondary WSN gateway in the WSN gateway, where the primary WSN gateway stores at least configuration information from the WSN gateway, and Information of the WSN node managed by the WSN gateway and WSN configuration parameters; The monitoring unit is disposed in the primary WSN gateway, and periodically monitors the status of the slave WSN gateway, or obtains self-status information periodically reported by the WSN gateway;  When the determining unit determines that the working slave WSN gateway is abnormal, the relay unit is triggered to work by the master WSN gateway to replace the abnormal slave WSN gateway.  13. The system according to claim 11, wherein the setting unit further sets a primary WSN gateway and a secondary WSN gateway in the WSN gateway; and, in the secondary WSN gateway, sets each WSN gateway with at least another A WSN gateway is a backup WSN gateway; wherein the primary WSN gateway is provided with a backup policy comparison table, and the backup policy comparison table includes at least the identifier of the WSN gateway and the WSN node managed by the slave WSN gateway. Information, WSN configuration parameters, and the identity of the backup WSN gateway as the slave WSN gateway;  The monitoring unit is disposed in the primary WSN gateway, and further periodically monitors the status of the working slave WSN gateway, or obtains self-status information periodically reported by the working slave WSN gateway; the determining unit further determines the working slave WSN gateway. When the status is abnormal, the successor unit is triggered to take over the work of the abnormal WSN gateway for the abnormal backup WSN gateway backed up from the WSN gateway.  The system according to claim 11, wherein the setting unit further sets, in the WSN gateway, a backup WSN gateway between each WSN gateway and another at least one WSN gateway; wherein, the communication A backup policy comparison table is set in the network, where the backup policy comparison table includes at least the identifier of the WSN gateway, the information of the WSN node managed by the WSN gateway, the WSN configuration parameter, and the correspondence between the backup WSN gateways;  The monitoring unit is disposed in the communication network, and further periodically monitors the status of the currently working WSN gateway, or obtains self-status information periodically reported by the working WSN gateway; and the determining unit further determines that the working WSN gateway status is abnormal, triggering The replacement unit replaces the operation of the abnormal WSN gateway with a backup WSN gateway that is an abnormal WSN gateway backup. The system according to any one of claims 12 to 14, wherein the system The system also includes:  The notification unit is disposed in the primary WSN gateway or the communication network, or is disposed in the backup WSN gateway, and is configured to notify the WSN node managed by the abnormal WSN gateway to report data and receive an instruction through the backup WSN gateway. .  The system according to claim 15, wherein the status information reported by the determining unit on the WSN gateway is abnormal or the WSN gateway does not report status information within a predetermined time interval to determine that the WSN gateway is faulty.