CN102457903B - Wireless sensor network is linked into connection control method and the device of telecommunications network by multiple gateway - Google Patents
Wireless sensor network is linked into connection control method and the device of telecommunications network by multiple gateway Download PDFInfo
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Abstract
The invention discloses a kind of wireless sensor network is linked into telecommunications network connection control method by multiple gateway, be applied in the network comprising wireless sensor network and communication network combination, in described wireless sensor network, be provided with WSN node and multiple WSN gateway; Management platform is provided with in described communication network; Described management platform is used for the WSN gateway for using during WSN peer distribution access communication network.The present invention discloses the device of a kind of wireless sensor network to the access control of telecommunications network.This invention ensures that in conjunction with network normal, run efficiently.
Description
Technical Field
The invention relates to a combined network technology, in particular to an access control method and device for a wireless sensor network to access a telecommunication network through multiple gateways.
Background
The wireless sensor network is a brand new information acquisition and processing technology as a product of combination of three technologies of calculation, communication and sensor. Recent improvements in microfabrication technology, communication technology, and battery technology have led to the ability of small sensor terminals to sense, wirelessly communicate, and process information. The sensor terminal can sense and detect the target object and the change of the environment, process the collected data and send the processed data to the data collection center in a wireless transmission mode. These sensor terminals are typically comprised of power supplies, sensing components, embedded processors, memory, communication components, and executing software. Wherein, the power supply provides the sensor node with the energy required for normal operation. The sensing component is used for sensing and acquiring external information and converting the external information into a digital signal. The embedded processor is responsible for coordinating the work of each part of the node, such as carrying out necessary processing and storage on the information acquired by the sensing component, controlling the working modes of the sensing component and the power supply, and the like. The communication component is responsible for communicating with other sensors or observers. The executing software provides necessary software support for the sensor terminal, such as an embedded operating system, an embedded database system and the like. The method comprises the steps of measuring heat, infrared, sonar, radar and seismic wave signals in the surrounding environment of the sensor terminal by means of sensing parts with various forms built in the sensor terminal, and detecting a great deal of information including temperature, humidity, noise, light intensity, pressure, soil components, size, speed and direction of a moving object. The sensor terminals typically form a network in an ad hoc or preconfigured manner. In terms of communication methods, various types such as wired, Wireless, infrared, and optical can be adopted, but it is generally considered that a short-distance Wireless low-power communication technology is most suitable for use in a Sensor Network, and is generally called a Wireless Sensor Network (WSN). Currently used wireless low power communication technologies in a wide range include: IEEE (institute of Electrical and Electronics Engineers)802.15.4 and Zigbee technologies.
IEEE 802.15.4 is a low-speed Wireless Personal Area Network (WPAN) standard developed by IEEE. IEEE 802.15.4 specifies the physical layer and Medium Access Control (MAC) standards. The communication module conforming to the IEEE 802.15.4 standard has the characteristics of low cost, low power consumption and small size.
The micro-processing capability and the wireless communication capability of the WSN node enable the wireless sensor network to have wide application prospects, and the applications include military application, biological and environmental monitoring, health application, household application, industrial control and monitoring and the like. Fig. 1 is a schematic diagram of a combination network structure, as shown in fig. 1, The combination network specifically includes a combination of a wireless sensor network and a telecommunication network, and The telecommunication network includes, for example, second generation (2G) mobile communication, third generation (3G) mobile communication, xdsl (x Digital Subscriber line), FTTx (Fiber To The x, x is home, building, node, premises), broadband wireless access, satellite/microwave, etc., so that The wireless sensor network can be used as an extension of The existing network, The capability of The communication network is expanded, and a communication object is expanded from a human To a physical world, and The combination network has a good development prospect. After the wireless sensor network is combined with the existing telecommunication network, the data sensed by the wireless sensor network can be effectively transmitted to the data center, the mode that people acquire data of the natural world can be greatly changed through the arrangement and analysis of the data, meanwhile, the wireless sensor network can be managed in a centralized manner, and the problem that the wireless sensor network scattered everywhere is difficult to manage at present is solved.
The combination of the wireless sensor network and the telecommunication network refers to connecting the wireless sensor network with the telecommunication network, monitoring, managing and finishing the bearing and cooperation implementation of the service provided by the wireless sensor network and the service provided by the wireless sensor network by using the telecommunication network, and expanding the service provided by the wireless sensor network by the telecommunication network. The combination of a wireless sensor network and a telecommunications network is typically such that the wireless sensor network is connected to the telecommunications network platform via a WSN gateway device. The WSN nodes are sensor nodes forming a wireless sensor network and are connected with the WSN gateway through one hop or multiple hops. The WSN node is responsible for collecting and uploading data, and receiving and executing commands. The devices forming the wireless sensor network are few and many hundreds, and the devices can be networked in a star, tree or MESH (MESH) mode according to the needs, wherein some devices have stronger networking and data forwarding capabilities.
After the wireless sensor network and the telecommunication network are combined, the WSN node in the wireless sensor network reports the data to the related network element entity at the telecommunication network side through the WSN gateway. The WSN nodes in the wireless sensor network can be of various types including a temperature measurer, an electric meter, a fire alarm and the like, and the WSN nodes of different types correspond to different service applications.
On the telecommunications network side, a plurality of network element entities can be provided, which manage different service applications. Specifically, the telecommunication network platform includes functional entities such as a management platform and a service platform. The management platform is responsible for implementing equipment management functions; the service platform is responsible for integrating the services provided by each service provider, providing the services to the terminal user, managing the service use condition of the user and completing the whole service process.
The WSN gateway is used as a device for connecting the wireless sensor network and the telecommunication network, and mainly completes the functions of configuration and networking of the wireless sensor network, protocol conversion, address mapping, data forwarding and the like.
The WSN node is connected to the telecommunication network platform through the WSN gateway. The WSN nodes are sensor nodes forming a wireless sensor network and are connected with the WSN gateway through one hop or multiple hops. The WSN node is responsible for collecting and uploading data, and receiving and executing commands. The devices forming the WSN are few and many hundreds, and the devices can be networked in a star, tree or MESH mode according to the needs, wherein some devices have stronger networking and data forwarding capabilities. The WSN node is the tail end of the extended network.
The intensive deployment of the WSN nodes has the characteristic that a wireless sensor network is often provided with a large number of nodes, which may cause a large load to a WSN gateway, and particularly when the data volume is large, congestion and data loss may be caused to influence normal work, so that when the wireless sensor network is combined with a telecommunication network, the problems of large load and possible congestion need to be solved in order to balance load and share network load.
In the prior art, a plurality of WSN gateways may exist in a wireless sensor network, and there are a master WSN gateway and a plurality of slave WSN gateways, where the master WSN gateway schedules the slave WSN gateways and allocates the slave WSN gateways used when WSN nodes access a telecommunication network. Because the main WSN gateway also has the functions of wireless sensor network configuration and networking, protocol conversion, address mapping, data forwarding and the like, if the main WSN gateway carries out scheduling on a plurality of WSN gateways, the work execution efficiency of the main WSN gateway is influenced. At present, in combination with a network technology, in a research stage, how to ensure that a WSN node accurately and efficiently selects a proper WSN gateway to access a telecommunication network is not provided with a technical scheme for reference.
Disclosure of Invention
In view of the above, the present invention provides an access control method and apparatus for a wireless sensor network to access a telecommunication network through multiple gateways, where a management platform in the telecommunication network provides an access control method for a WSN node to access the telecommunication network.
In order to achieve the purpose, the technical scheme of the invention is realized as follows:
an access control method for accessing a wireless sensor network to a telecommunication network through multiple gateways is applied to a network combining the wireless sensor network and the telecommunication network, wherein the wireless sensor network is provided with a WSN node and a WSN gateway; a management platform is arranged in the telecommunication network; the management platform is used for scheduling and allocating the WSN gateways used when the WSN nodes access the telecommunication network.
Preferably, the scheduling allocation of the WSN gateway is performed, and the WSN gateway used when the WSN node is allocated to access the telecommunication network specifically includes:
the management platform determines that a WSN node is added in the wireless sensor network, or a WSN gateway is added, or the WSN gateway is withdrawn, allocates a WSN gateway for the newly added WSN node, or allocates a WSN node for the newly added WSN gateway, or reallocates the WSN gateway for the WSN node connected under the withdrawn WSN gateway; and respectively informing the WSN node and the WSN gateway distributed for the WSN node of the corresponding information of the WSN node and the WSN gateway distributed for the WSN node.
Preferably, when the management platform allocates a WSN gateway used for accessing the telecommunication network to the WSN node, the management platform sends the relevant information of the WSN node and the communication connection configuration information to the allocated WSN gateway, and sends the relevant information of the allocated WSN gateway and the communication connection configuration information to the WSN node.
Preferably, the method further comprises:
the management platform stores the corresponding relation between the WSN gateway and the WSN nodes connected under the WSN gateway, the related information of each WSN gateway and each WSN node connected under the WSN gateway and the corresponding communication connection configuration information.
Preferably, the related information of the WSN node includes an identifier and address information of the WSN node; the related information of the WSN gateway comprises address information of the WSN gateway; the communication connection configuration information is configuration parameters required for establishing communication connection between the WSN node and the WSN gateway distributed to the WSN node.
Preferably, the WSN gateway records and stores the identification and network address of the WSN node accessed to the telecommunication network through the WSN gateway, and the communication connection configuration information between the WSN node and the WSN gateway; the WSN node stores communication connection configuration information with the gateway and address information of the gateway.
Preferably, each WSN gateway in the wireless sensor network communicates with each other through the wireless sensor network or through a telecommunication network.
Preferably, one WSN node has a correspondence with more than one WSN gateway.
An access control device for accessing a wireless sensor network to a telecommunication network through multiple gateways, which is applied to a combined network comprising the wireless sensor network and the telecommunication network, and comprises:
and the distribution unit is used for carrying out scheduling distribution on the WSN gateway and distributing the WSN gateway used when the WSN node is accessed to the telecommunication network.
Preferably, the distribution unit further comprises: a determining subunit, an allocating subunit and a notifying subunit; wherein,
the determining subunit is used for triggering the distribution unit when determining that a WSN node is added in the wireless sensor network, or a WSN gateway is added in the wireless sensor network, or the WSN gateway exits;
the distribution subunit is used for distributing the WSN gateway for the newly added WSN node, or distributing the WSN node for the newly added WSN gateway, or redistributing the WSN gateway for the WSN node which is connected under the quitting WSN gateway;
and the notification subunit is used for respectively notifying the WSN node and the WSN gateway allocated to the WSN node of the corresponding information of the WSN node and the WSN gateway allocated to the WSN node.
Preferably, when the determining subunit determines, for the WSN node, a WSN gateway accessing the telecommunication network, the notifying subunit further sends the relevant information of the WSN node and the communication connection configuration information to the determined WSN gateway, and sends the relevant information of the WSN gateway and the communication connection configuration information to the WSN node.
Preferably, the apparatus further comprises:
the storage unit is used for storing the corresponding relation between the WSN gateway and the WSN nodes connected under the WSN gateway; and the WSN gateway, the related information of each WSN node connected under the WSN gateway and the corresponding communication connection configuration information.
In the invention, a management platform of a telecommunication network schedules and allocates a plurality of WSN gateways in a wireless sensor network, the plurality of gateways are in an equivalent working mode, a main WSN gateway in the WSN gateways does not need to determine the WSN gateway for a WSN node, the WSN gateway can be specially used for data communication of the WSN node, the efficiency of accessing the WSN node to the telecommunication network is improved, the problem of data congestion caused by low communication efficiency due to the fact that the WSN gateway is used for allocation of the WSN gateway can be avoided, and the normal and efficient operation of the combination network is ensured.
Drawings
FIG. 1 is a schematic diagram of a bonding network architecture;
FIG. 2 is a flow chart of a method of the present invention for determining a WSN gateway for a WSN node;
fig. 3 is a functional block diagram of an apparatus for determining a WSN gateway for a WSN node according to the present invention.
Detailed Description
The basic idea of the invention is: the management platform of the telecommunication network schedules and allocates a plurality of WSN gateways in the wireless sensor network, the plurality of gateways are in an equivalent working mode, a main WSN gateway in the WSN gateways does not need to determine the WSN gateway for the WSN node, the WSN gateway can be dedicated to data communication of the WSN node, the efficiency of accessing the WSN node to the telecommunication network is improved, the problem of data congestion caused by low communication efficiency due to the fact that the WSN gateway is used for allocation of the WSN gateway can be avoided, and normal and efficient operation of the combination network is guaranteed.
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to the accompanying drawings by way of examples.
The method for accessing the WSN node to the telecommunication network through the multiple WSN gateways is described below by taking a wireless sensor network based on the ZigBee technology as an example.
ZigBee is a wireless network technology with short distance, low speed, low cost and low power consumption. The method adopts Direct Sequence Spread Spectrum (DSSS) technology, the working frequency is 868MHz, 915MHz or 2.4GHz, and the frequency is the frequency without applying for license. The configuration of the wireless personal area network based on the ZigBee technology is a new development of the near-distance wireless communication technology in recent years, and is more and more widely applied to the fields of industrial automation and intelligent home.
There are three kinds of functional devices in the ZigBee network: a network coordinator, a router and a terminal node. The network coordinator has the function of coordinating and establishing a network and is the first device in the network, one ZigBee network is only provided with one network coordinator and is responsible for initiating and establishing a new network, setting network parameters, managing nodes in the network, storing node information in the network and the like, and the function of a router can be executed after the network is formed. Routers may participate in route discovery, message forwarding, extending the coverage of the network by connecting to other nodes, etc. The end node is connected to the network through a network coordinator or router, but does not allow any other node to join the network through it.
The application scenario of the present invention is that in a network combining a telecommunication network and a wireless sensor network shown in fig. 1, it should be noted that the general structure of the combining network in the present invention is completely the same as the structure of the existing combining network, and only the functions implemented by some network elements are different from the existing network elements. In the invention, the management platform in the telecommunication network executes the distribution of the WSN gateway of the WSN node.
The binding network is first described further below. As shown in fig. 1, the telecommunication network includes a management platform and a service platform, and the management platform is responsible for implementing the device management function; the service platform is responsible for integrating the services provided by each service provider, providing the services to the terminal user, managing the service use condition of the user and completing the whole service process. The WSN gateway is used as a device for connecting the wireless sensor network and the telecommunication network, mainly completes the functions of configuration and networking of the wireless sensor network, protocol conversion, address mapping, data forwarding and the like, and a plurality of WSN gateways can exist in the network. The WSN node is connected to the telecommunication network platform through the WSN gateway.
In the invention, the first WSN gateway added into the wireless sensor network is used as a coordinator in the ZigBee network and is responsible for the establishment of the wireless sensor network. The WSN gateway which is added subsequently is used as a router to be added into the wireless sensing network, the WSN node can be used as a router or a terminal node to be added into the wireless sensing network, and both the WSN gateway and the WSN node need to support the ZigBee technology.
In order to realize the security of the ZigBee network, the management of a secret key and the like, a trust center exists in the ZigBee network. A trust center is a trusted device that assigns security keys in a network, allowing communication-related devices to join a wireless sensor network and assign keys, thus ensuring end-to-end security between devices. In a network employing security mechanisms, the network coordinator may become a trust center. In order to implement trust management, the device needs to receive an initial master key from a trust center from which link keys, etc. must also be obtained in a secure manner.
Generally, the first WSN gateway joining the wireless sensor network serves as a trust center for security management of the network.
The identity authentication and the safety communication of the WSN gateway are realized between the WSN gateway and a management platform or other network entities in the telecommunication network through the identity identification of the WSN gateway. And the WSN gateway and the WSN node are in secure connection through the link key.
In the invention, after a first WSN gateway added into a wireless sensor network is used as a network coordinator to establish the wireless sensor network, the first WSN gateway needs to register in a management platform and completes access authentication to a telecommunication network; the WSN gateway to be added subsequently can be used as a router to be added into the wireless sensor network, and after the WSN gateway is added into the wireless sensor network, the network coordinator can send the information of the newly added WSN gateway to the management platform, and the newly added WSN gateway can also register in the management platform. The management platform stores and maintains the information of each WSN gateway. The information includes the address of the WSN gateway, the access capability and other parameters.
In the invention, the WSN node is authenticated and configured by the network coordinator and then is added into the wireless sensor network, and then the network coordinator informs the management platform and reports the related information of the WSN node to the management platform. The management platform stores and maintains relevant information of each WSN node, wherein the information comprises identification, address and the like of the WSN node. When the WSN node joins in the wireless sensor network, the network coordinator authenticates the WSN node, negotiates with the WSN node based on an initial master key, and determines a link key and the like required by the WSN node to join in the sensor network, so that the WSN node successfully joins in the sensor network, and the network coordinator and the WSN node establish safe communication connection through the link key.
In the invention, the management platform is responsible for scheduling and distributing the WSN gateways when the WSN nodes access the telecommunication network according to the information of each WSN gateway and the related information of the WSN nodes. During distribution, the management platform sends the related information of the WSN node and the communication connection configuration information to the designated WSN gateway, and sends the related information of the designated WSN gateway and the communication connection configuration information to the corresponding WSN node. The related information of the WSN node comprises an identifier, an address and the like of the WSN node; the related information of the WSN gateway comprises the address of the WSN gateway. The communication connection configuration information is configuration parameters required for establishing communication connection between a designated WSN gateway and a WSN node which the designated WSN gateway is responsible for accessing, and comprises parameters such as a link key, and the like, and the WSN gateway and the WSN node establish safe communication connection through the link key. The management platform stores and maintains the corresponding relation between one WSN gateway and the WSN node which is responsible for accessing the WSN gateway, and also stores the related information of each WSN gateway and each WSN node and the corresponding communication connection configuration information.
In the invention, a management platform carries out scheduling distribution of multiple gateways, after the gateways used when the WSN nodes are distributed and accessed to a telecommunication network are distributed, a network coordinator does not provide access for the original WSN nodes any more, and after the WSN nodes establish safe communication connection with the distributed gateways through the related information of the distributed gateways and the communication connection configuration information which are obtained from the management platform, the distributed gateways are responsible for accessing the WSN nodes to the telecommunication network.
In the above correspondence, one WSN node may correspond to more than one WSN gateway, that is, one WSN node may access to the telecommunications network through more than one WSN gateway, implement the transmission of self-detection or monitoring data, and receive the control command and the like sent by the telecommunications network.
In the invention, each WSN gateway records and stores the identification and network address of the WSN node accessed to the telecommunication network through the WSN gateway, the communication connection configuration information between the WSN node and the WSN gateway, and the like.
And the WSN gateways in the wireless sensor network can communicate with each other through the wireless sensor network or through a telecommunication network.
Fig. 2 is a flowchart of a method for determining a WSN gateway for a WSN node according to the present invention, as shown in fig. 2, the method for determining a WSN gateway for a WSN node according to the present invention includes the following steps:
step 201, a management platform of the telecommunication network records and stores relevant information of the WSN gateway and the WSN node.
After the WSN gateway and the WSN node are added into the wireless sensing network, the management platform receives the information and records and stores the information.
Step 202, a management platform of the telecommunication network allocates a WSN gateway for the WSN node when accessing the telecommunication network.
The management platform allocates WSN gateways for the WSN nodes when the WSN nodes access the telecommunication network according to a certain strategy, sends the related information of the WSN nodes and the communication connection configuration information to the designated WSN gateway, and sends the related information of the designated WSN gateway and the communication connection configuration information to the corresponding WSN nodes. In the invention, the strategy of the WSN gateway when the WSN node is distributed and accessed to the telecommunication network can be determined by a specific operator, and particularly, the method generally follows the principles of less routing hop count, no more threshold load of the WSN gateway and balanced load as much as possible. That is, at first, more than one WSN gateway with less routing hops (e.g., less than the set hop count) from the WSN node of the gateway to be allocated is found out as a gateway accessing the telecommunication network, and after the WSN gateway with less routing hops is found out, the WSN gateway with the lightest load is selected as the WSN node access gateway according to the determined load condition of the WSN gateway with less routing hops. The selection strategy of the gateway is not difficult and does not realize the substantive content of the technical scheme of the invention, and the details of the realization are not repeated here.
The communication connection configuration information is configuration parameters required for establishing communication connection between a designated WSN gateway and a WSN node which the designated WSN gateway is responsible for accessing, and comprises parameters such as a link key, and the like, and the WSN gateway and the WSN node establish safe communication connection through the link key.
Step 203, after the management platform of the telecommunication network schedules and allocates the WSN gateways and WSN nodes in the wireless sensor network, the management platform stores and maintains the corresponding relationship between the WSN gateways and the WSN nodes that the WSN gateways and the WSN nodes are responsible for accessing, and also stores the relevant information of each WSN gateway and each WSN node and the corresponding communication connection configuration information.
In the invention, the situation that a WSN gateway of a certain WSN node accessing a telecommunication network needs to be changed may occur, for example, the management platform can select another WSN gateway closer to the certain WSN node for the certain WSN node, thereby reducing the routing path between the certain WSN gateway and the WSN gateway and achieving the effects of reducing the communication complexity in the sensor network and saving energy.
Or, because the load of the wireless sensor network is unbalanced due to the joining and leaving of the WSN nodes and the joining and leaving of the WSN gateways, the management platform changes the WSN gateways accessed by the WSN nodes in order to balance the load, at this time, the management platform can redistribute new WSN gateways providing telecommunication network access for the WSN nodes, the management platform sends the related information and the communication connection configuration information of the WSN nodes to a newly designated WSN gateway, sends the information of the new WSN gateways to the WSN nodes needing to be changed, and informs the WSN gateway change information of the WSN gateway which originally provides the telecommunication network access for the WSN nodes. And the newly-specified WSN gateway adds the related information of the WSN node in the WSN gateway, and the original WSN gateway deletes the related information of the WSN node stored in the WSN gateway. Subsequently, the newly designated WSN gateway will provide telecommunication network access for the WSN node, and the original WSN gateway will no longer provide telecommunication network access for the WSN node.
In the invention, when a WSN node leaves a wireless sensor network, the management platform and the WSN gateway used by the WSN node for accessing a telecommunication network remove the stored related information of the WSN node, and the WSN gateway does not provide telecommunication network access for the WSN node any more.
In the invention, when a WSN gateway leaves a wireless sensor network, a management platform allocates a WSN node which is responsible for accessing the WSN gateway to other WSN gateways, adjusts the allocation of the WSN gateways, and updates the stored corresponding relation between the WSN gateway and the WSN node and the corresponding information and communication connection configuration information. And the WSN gateway involved in the adjustment also updates the stored WSN node information according to the scheduling result.
In the invention, the management platform can subsequently send the related information of the WSN node to the telecommunication network service platform, and the telecommunication network service platform can configure the related parameters of the WSN node and start the service supported by the WSN node, so that the WSN node can report data to the service platform through the WSN gateway.
Fig. 3 is a functional block diagram of an apparatus for determining a WSN gateway for a WSN node according to the present invention, as shown in fig. 3, the apparatus for determining a WSN gateway for a WSN node according to the present invention is applied to a combination network including a wireless sensor network and a telecommunication network, and the apparatus includes:
the allocating unit 30 is configured to perform scheduling allocation of WSN gateways, and allocate the WSN gateways used when accessing the telecommunication network to the WSN nodes.
The above-mentioned distribution unit 30 further includes: a determination subunit 301, an assignment subunit 302, and a notification subunit 303; wherein,
the determining subunit 301 is configured to trigger the allocating subunit 302 when it is determined that a WSN node is added to the wireless sensor network, or a WSN gateway is added to the wireless sensor network, or the WSN gateway exits from the wireless sensor network;
the assigning subunit 302 is configured to assign a WSN gateway to a newly added WSN node, or assign a WSN node to a newly added WSN gateway, or reassign a WSN gateway to a WSN node that exits from a WSN gateway;
a notifying subunit 303, configured to notify the WSN node and the WSN gateway allocated to the WSN node of the correspondence information between the WSN node and the WSN gateway allocated to the WSN node, respectively.
When the determining subunit 301 determines, for the WSN node, a WSN gateway accessing the telecommunication network, the notifying subunit 303 further sends the relevant information of the WSN node and the communication connection configuration information to the determined WSN gateway, and sends the relevant information of the determined WSN gateway and the communication connection configuration information to the WSN node.
As shown in fig. 3, the apparatus for determining a WSN gateway for a WSN node of the present invention includes a storage unit 31, configured to store a corresponding relationship between the WSN gateway and a WSN node connected to the WSN gateway; and the WSN gateway, the related information of each WSN node connected under the WSN gateway and the corresponding communication connection configuration information.
The related information of the WSN node comprises an identifier and address information of the WSN node; the related information of the WSN gateway comprises address information of the WSN gateway; the communication connection configuration information is configuration parameters required for establishing communication connection between the WSN node and the WSN gateway distributed to the WSN node.
Recording and storing the identification and the network address of a WSN node accessed to a telecommunication network through the WSN gateway and communication connection configuration information between the WSN node and the WSN gateway in the WSN gateway; the WSN node stores communication connection configuration information with the gateway and address information of the gateway.
In the invention, each WSN gateway in the wireless sensor network communicates with each other through the wireless sensor network or the telecommunication network. One WSN node has a correspondence with more than one WSN gateway. It should be understood by those skilled in the art that the apparatus for determining a WSN gateway for a WSN node shown in fig. 3 of the present invention is designed for implementing a method for determining a WSN gateway for a WSN node, and the functions of the processing units in the apparatus for determining a WSN gateway for a WSN node shown in fig. 3 can be understood by referring to the foregoing description in connection with the network or the related method for determining a WSN gateway for a WSN node. The functions of the processing units in the figures may be implemented by a program running on a processor, or may be implemented by specific logic circuits.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention.
Claims (10)
1. An access control method for accessing a wireless sensor network to a telecommunication network through multiple gateways is applied to a network combining the wireless sensor network and the telecommunication network, wherein the wireless sensor network is provided with a WSN node and a WSN gateway; a management platform is arranged in the telecommunication network; the management platform is used for scheduling and allocating the WSN gateways used when the WSN nodes access the telecommunication network;
the scheduling distribution of the WSN gateways is carried out, and the WSN gateways used when the WSN nodes are distributed to access the telecommunication network specifically comprise:
the management platform determines that a WSN node is added in the wireless sensor network, or a WSN gateway is added, or the WSN gateway is withdrawn, allocates a WSN gateway for the newly added WSN node, or allocates a WSN node for the newly added WSN gateway, or reallocates the WSN gateway for the WSN node connected under the withdrawn WSN gateway; and respectively informing the WSN node and the WSN gateway distributed for the WSN node of the corresponding information of the WSN node and the WSN gateway distributed for the WSN node.
2. The method of claim 1, wherein when the management platform allocates a WSN gateway to the WSN node, the WSN gateway being used for accessing the telecommunication network, the management platform sends the relevant information of the WSN node and the communication connection configuration information to the allocated WSN gateway, and sends the relevant information of the allocated WSN gateway and the communication connection configuration information to the WSN node.
3. The method of claim 1, further comprising:
the management platform stores the corresponding relation between the WSN gateway and the WSN nodes connected under the WSN gateway, the related information of each WSN gateway and each WSN node connected under the WSN gateway and the corresponding communication connection configuration information.
4. The method according to claim 2 or 3, wherein the related information of the WSN node comprises identification and address information of the WSN node; the related information of the WSN gateway comprises address information of the WSN gateway; the communication connection configuration information is configuration parameters required for establishing communication connection between the WSN node and the WSN gateway distributed to the WSN node.
5. The method of claim 4, wherein the WSN gateway records and stores therein an identification and a network address of a WSN node accessing the telecommunication network through the WSN gateway, and communication connection configuration information between the WSN node and the WSN gateway; the WSN node stores communication connection configuration information with the gateway and address information of the gateway.
6. The method of claim 1, wherein each WSN gateway in the wireless sensor network communicates with each other through the wireless sensor network or through a telecommunication network.
7. The method of claim 1, wherein a WSN node has a correspondence with more than one WSN gateway.
8. An access control device for accessing a wireless sensor network to a telecommunication network through multiple gateways, which is applied to a combined network comprising the wireless sensor network and the telecommunication network, and is characterized in that the device comprises:
the distribution unit is used for carrying out scheduling distribution on the WSN gateway and distributing the WSN gateway used when the WSN node is accessed to the telecommunication network;
wherein the allocation unit further comprises: a determining subunit, an allocating subunit and a notifying subunit; wherein,
the determining subunit is used for triggering the distributing subunit when determining that a WSN node is added in the wireless sensor network, or a WSN gateway is added in the wireless sensor network, or the WSN gateway exits;
the distribution subunit is used for distributing the WSN gateway for the newly added WSN node, or distributing the WSN node for the newly added WSN gateway, or redistributing the WSN gateway for the WSN node which is connected under the quitting WSN gateway;
and the notification subunit is used for respectively notifying the WSN node and the WSN gateway allocated to the WSN node of the corresponding information of the WSN node and the WSN gateway allocated to the WSN node.
9. The apparatus of claim 8, wherein when the determining subunit determines a WSN gateway for accessing the telecommunication network for the WSN node, the notifying subunit further sends information related to the WSN node and communication connection configuration information to the determined WSN gateway, and sends information related to the determined WSN gateway and communication connection configuration information to the WSN node.
10. The apparatus of claim 8, further comprising:
the storage unit is used for storing the corresponding relation between the WSN gateway and the WSN nodes connected under the WSN gateway; and the WSN gateway, the related information of each WSN node connected under the WSN gateway and the corresponding communication connection configuration information.
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| PCT/CN2010/080406 WO2012051777A1 (en) | 2010-10-19 | 2010-12-28 | Access control method and device for wireless sensor network (wsn) to access telecommunication network via multiple gateways |
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| CN102769894A (en) * | 2012-07-04 | 2012-11-07 | 上海大学 | Multi-gateway multi-node wireless sensor network and multi-gateway channel selection and node adaptive network access method for same |
| CN103581362B (en) * | 2013-11-22 | 2016-09-07 | 中国联合网络通信集团有限公司 | Method that sensor network nodes migrates to another sensor network and network gateway |
| TWI551179B (en) | 2014-12-25 | 2016-09-21 | 台達電子工業股份有限公司 | Establishing method for self-organization network of wireless nodes |
| KR101798065B1 (en) * | 2016-05-18 | 2017-12-12 | 전자부품연구원 | Wireless sensor network System to be available to redistribute connetion of node and method thereof |
| CN109195159B (en) * | 2018-08-23 | 2021-11-09 | 中国联合网络通信集团有限公司 | Addressing test method, device and system for sensor gateway |
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