CN102300206B - The addressing method of Wireless Sensor Network Terminal and in conjunction with network - Google Patents
The addressing method of Wireless Sensor Network Terminal and in conjunction with network Download PDFInfo
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Abstract
The invention discloses the addressing method of a kind of Wireless Sensor Network Terminal, be applied in conjunction with in network, described include wireless sensor network and communication network in conjunction with network, described wireless sensor network is provided with WSN terminal and gateway; Described communication network is provided with wireless sensor network management platform; Described method includes: when the NE entity in described communication network carries out the addressing of WSN terminal, obtain the information of the wireless sensor network at WSN terminal place from wireless sensor network management platform, and search out WSN terminal by the gateway of the wireless sensor network at WSN terminal place. The present invention discloses one in conjunction with network. By method provided by the present invention, support that in communication network, arbitrary network entity initiates the communication with WSN terminal, it is achieved less costly.
Description
Technical Field
The present invention relates to a combined network technology, and in particular, to an addressing method for a Wireless Sensor Network (WSN) terminal and a combined network.
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 forms 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 of a sensor network, and is generally referred to as a wireless sensor network. Currently used wireless low power communication technologies in a wide range include: IEEE (institute of Electrical electronics Engineers)802.15.4 and ZigBee technologies.
IEEE802.15.4 is a low-speed Wireless Personal Area Network (WPAN) standard developed by IEEE. Ieee802.15.4 specifies the physical layer and Medium Access Control (MAC) standards. The communication module conforming to the IEEE802.15.4 standard has the characteristics of low cost, low power consumption and small size.
The ZigBee alliance is an organization that aims to develop reliable, low cost, low power consumption, wireless network connection monitoring and control products based on open global standards. The physical layer and the MAC layer of the ZigBee standard adopt IEEE802.15.4 technology, and the network layer, the safety management, the application layer specification and the interoperability are developed by a ZigBee alliance. The ZigBee smart energy public application specification (ZigBee smart application profile) and the ZigBee home automation application specification (ZigBee home automation public application profile) in the ZigBee standard are respectively directed to business environment applications and home applications.
The micro-processing capability and the wireless communication capability of the WSN terminal 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.
The wireless sensor network can be used as an extension of the existing network, and the capability of the communication network is expanded, so that a communication object is expanded from a human to a physical world, and the wireless sensor 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 gateway device.
The WSN terminal is a sensor node forming a wireless sensor network and is connected with the gateway through one hop or multiple hops. The WSN terminal 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 is combined with the telecommunication network, besides that the WSN terminal reports related data to a related network element entity at the telecommunication network side through a gateway, from the perspective of WSN terminal management, under the condition that software of the WSN terminal needs to be upgraded or parameters in the WSN terminal need to be updated and the like, the related network element entity at the telecommunication network side needs to actively establish communication with the WSN terminal, and after the communication is established, services such as software upgrading and parameter updating of the WSN terminal are executed. However, the WSN terminal is located in the wireless sensor network, the wireless sensor network and the current telecommunication network adopt different address management methods, and the gateway unit entity at the telecommunication network side cannot directly establish communication with the WSN terminal. At present, no corresponding technical scheme exists for solving the problems and the requirements.
Therefore, when the wireless sensor network is combined with the telecommunication network, the addressing method of the WSN terminal needs to be considered, so that the entity of the relevant network element at the telecommunication network side can find the WSN terminal located in the wireless sensor network and establish communication with the WSN terminal, and thus the entity of the relevant network element at the telecommunication network side can perform the management function of the WSN terminal.
Disclosure of Invention
In view of the above, the main objective of the present invention is to provide an addressing method for a WSN terminal and a combination network, which can support any network entity in a telecommunication network to communicate with the WSN terminal in a wireless sensor network.
In order to achieve the purpose, the technical scheme of the invention is realized as follows:
an addressing method of a wireless sensor network terminal is applied to a combined network, the combined network comprises a wireless sensor network and a telecommunication network, and a WSN terminal and a gateway are arranged in the wireless sensor network; a wireless sensor network management platform is arranged in the telecommunication network; the method comprises the following steps:
and when the network element entity in the telecommunication network addresses the WSN terminal, the information of the wireless sensor network where the WSN terminal is located is obtained from the wireless sensor network management platform, and the WSN terminal is found through the gateway of the wireless sensor network where the WSN terminal is located.
Preferably, the wireless sensor network management platform stores information of correspondence between the WSN terminal and the wireless sensor network to which the WSN terminal belongs.
Preferably, the wireless sensor network management platform stores information of the WSN terminal, where the information of the WSN terminal includes an identifier of the WSN terminal and a network identifier of a wireless sensor network where the WSN terminal is located.
Preferably, the information of the wireless sensor network where the WSN terminal is located is obtained from the wireless sensor network management platform, and the WSN terminal is found through a gateway of the wireless sensor network where the WSN terminal is located, and the method includes:
the network unit entity obtains the information of the wireless sensor network where the WSN terminal is located from the slave wireless sensor network management platform according to the identification of the WSN terminal; according to the obtained information of the wireless sensor network where the WSN terminal is located, the network unit entity establishes communication connection with the wireless sensor network where the WSN terminal is located; and the network unit entity provides the identification of the WSN terminal to a gateway of the wireless sensor network where the WSN terminal is located, and the gateway of the wireless sensor network where the WSN terminal is located obtains the network address of the WSN terminal in the wireless sensor network according to the identification of the WSN terminal.
Preferably, the wireless sensor network management platform stores information of a wireless sensor network, and the information of the wireless sensor network where the WSN terminal is located includes at least one of network identification information of the wireless sensor network where the WSN terminal is located, identification information of a gateway, address information of the gateway in a telecommunication network, and interface information of the gateway connected to the telecommunication network.
Preferably, the gateway of the wireless sensor network stores information of the WSN terminal in the wireless sensor network, where the information of the WSN terminal includes an identifier of the WSN terminal and a network address of the WSN terminal in the wireless sensor network.
Preferably, according to the obtained information of the wireless sensor network where the WSN terminal is located, the network element entity establishes a communication connection with the wireless sensor network where the WSN terminal is located, and the communication connection is:
and the network unit entity establishes communication connection with the gateway of the wireless sensor network according to the obtained information of the gateway of the wireless sensor network where the WSN terminal is located.
Preferably, the network element entity is a wireless sensor network management platform, or a wireless sensor network service platform, or other network element entities.
A combination network comprises a wireless sensor network and a telecommunication network, wherein a WSN terminal and a gateway are arranged in a WSN; a wireless sensor network management platform is arranged in the telecommunication network; wherein,
and the network unit entity arranged in the telecommunication network obtains the information of the wireless sensor network where the WSN terminal is positioned from the wireless sensor network management platform when the WSN terminal is addressed, and finds the WSN terminal through the gateway of the wireless sensor network where the WSN terminal is positioned.
Preferably, the wireless sensor network management platform is further configured to store correspondence information between the WSN terminal and a wireless sensor network to which the WSN terminal belongs.
Preferably, the network element entity further obtains information of the wireless sensor network where the WSN terminal is located from the slave wireless sensor network management platform according to the identifier of the WSN terminal; according to the obtained information of the wireless sensor network where the WSN terminal is located, the network unit entity establishes communication connection with the wireless sensor network where the WSN terminal is located; and the network unit entity provides the identification of the WSN terminal to the wireless sensor network where the WSN terminal is located, and the wireless sensor network where the WSN terminal is located obtains the network address of the WSN terminal in the wireless sensor network according to the identification of the WSN terminal.
Preferably, the wireless sensor network management platform stores information of a wireless sensor network, and the information of the wireless sensor network where the WSN terminal is located includes at least one of network identification information of the wireless sensor network where the WSN terminal is located, identification information of a gateway, address information of the gateway in a telecommunication network, and interface information of the gateway connected to the telecommunication network.
Preferably, the network element entity establishes a communication connection with the gateway of the wireless sensor network specifically according to the obtained information of the gateway of the wireless sensor network where the WSN terminal is located.
Preferably, the network element entity is a wireless sensor network management platform, or a wireless sensor network service platform, or other network element entities.
In the invention, the application function of the wireless sensor network is greatly expanded by combining the wireless sensor network and the telecommunication network, and the WSN terminal in the wireless sensor network can be found and the communication with the WSN terminal is established by the network element entity at the telecommunication network side in the combined network, so that the management of the network element entity in the telecommunication network to the WSN terminal can be perfected. The method provided by the invention supports any network entity in the telecommunication network to initiate communication with the WSN terminal, and has lower realization cost.
Drawings
FIG. 1 is a schematic diagram of a bonding network architecture of the present invention;
FIG. 2 is a flow chart of a method for addressing a WSN terminal according to the present invention;
fig. 3 is a flow chart of another method of addressing a WSN terminal according to the present invention.
Detailed Description
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.
In the invention, the wireless sensor network is a wireless network formed by a group of sensor node devices in a self-organizing way, and the sensor node devices are communicated with each other by a short-distance wireless communication technology. Wireless sensor networks are typically deployed over areas ranging from a few meters to hundreds of meters, where the sensor node devices are typically battery powered, with low power consumption and cost. The near field communication technology generally adopts ZigBee and IEEE802.15.4 technology.
In the invention, the combination of the wireless sensor network and the telecommunication network refers to the connection of the wireless sensor network and the telecommunication network, the monitoring, management and the completion of the bearing and the cooperation implementation of the service of the wireless sensor network and the service provided by the wireless sensor network are carried out by utilizing the telecommunication network, and the service provided by the wireless sensor network is expanded by the telecommunication network. Telecommunication networks include various communication networks such as mobile communication networks, xDSL, FTTx, satellite communication, etc.
In the invention, the wireless sensor network consists of a WSN terminal and a gateway device, the WSN terminal and the gateway can be established according to the relevant technical standards of the wireless sensor network, and the near field communication technology for establishing the wireless sensor network comprises a ZigBee technology, an IEEE802.15.4 standard and the like. The wireless sensor network is connected to the telecommunication network through the gateway, and communication is established with a wireless sensor network management platform and the like in the telecommunication network.
FIG. 1 is a schematic diagram of a combined network architecture of the present invention, as shown in FIG. 1, including a wireless sensor network and a telecommunications network; wherein,
a WSN terminal and a gateway are arranged in the wireless sensor network; and a service platform and a wireless sensor network management platform are arranged in the telecommunication network.
In the invention, the wireless sensor network is a wireless network formed by a group of sensor node devices in a self-organizing way, and the sensor node devices are communicated with each other by a short-distance wireless communication technology. Wireless sensor networks are typically deployed over areas ranging from a few meters to hundreds of meters, where the sensor node devices are typically battery powered, with low power consumption and cost. The near field communication technology generally adopts ZigBee and IEEE802.15.4 technology.
In the invention, the combination of the wireless sensor network and the telecommunication network refers to the connection of the wireless sensor network and the telecommunication network, the monitoring and management of the wireless sensor network and the service provided by the wireless sensor network are carried out by utilizing the telecommunication network, the bearing and the cooperation implementation of the service are completed, and the service provided by the wireless sensor network is expanded by the telecommunication network. Telecommunication networks include various communication networks such as mobile communication networks, xDSL, FTTx, satellite communication, etc.
In the invention, in order to realize the connection between the wireless sensor network and the telecommunication network, the wireless sensor network is added into the telecommunication network through a gateway and is connected with a service platform and a wireless sensor network management platform of the telecommunication network through the telecommunication network. The WSN terminal is connected to the telecommunication network platform through the gateway equipment. The WSN terminal equipment is a sensor node forming a wireless sensor network and is connected with the gateway through one hop or multiple hops. The WSN terminal equipment 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 terminal is at the very end of the wireless sensor network. Specifically, the WSN terminal is various sensors that perform monitoring tasks, such as a temperature sensor, a humidity sensor, and the like.
In the invention, the gateway is responsible for connecting the wireless sensor network and the telecommunication network, mainly completes the functions of protocol conversion, address mapping, data forwarding and the like, and can also integrate the functions of safety, charging, establishment of the wireless sensor network and the like. The functions that the gateway can support may include: supporting the cooperation and aggregation of data in the sensor network; supporting one or more of remote communication joining modes such as 2G mobile communication, 3G mobile communication, xDSL, FTTx, broadband wireless joining, satellite/microwave and the like, and transmitting the converged data to a communication opposite end; supporting a service platform and a remote management server to perform equipment authentication and user authentication on the WSN gateway; supporting a service platform and a remote management server to configure parameters and software of the WSN gateway; user authentication, service safety and equipment management safety mechanisms are supported; creation and management of wireless sensor networks.
The service platform is a functional entity for operating and managing common services in the telecommunication network and the wireless sensor network, and is responsible for integrating the services provided by each service provider, providing the services to a terminal user and managing the service use condition of the user. The service platform cooperates with other functional entities in the telecommunication network, such as an Authentication Authorization Accounting (AAA) server, to complete the whole service flow according to the needs of different services. The service platform can also be connected with a remote server to directly update the service.
The wireless sensor network management platform is a functional entity for managing the wireless sensor network. The wireless sensor network management platform can be composed of a management server, and the management server implements a management function on the wireless sensor network through a telecommunication network.
In the embodiment of the invention, the wireless sensor network is established based on the ZigBee technology.
ZigBee is an emerging wireless network technology with short distance, low speed, low cost and low power consumption. It adopts Direct Sequence Spread Spectrum (DSSS) technology, and its working frequency is 868MHz, 915MHz or 2.4 GHz. 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 types of nodes in a ZigBee network: ZigBee coordination point, ZigBee route node and ZigBee terminal node.
The ZigBee coordination point is also called a Personal Area Network (PAN) coordination point (ZC) in ieee802.15.4, and may be used as a sink node in a wireless sensor network. The ZigBee coordination point must be a Full Function Device (FFD), and a ZigBee network only has one ZigBee coordination point, which is often more powerful than other nodes in the network, and is a master node of the entire network. It is responsible for initiating and setting up new network, setting network parameter, managing node in network and storing node information in network, etc., and can also execute the function of router after the network is formed. The ZigBee coordination point is the most complex of three types of ZigBee nodes, and is generally continuously powered by an alternating current power supply.
ZigBee routing nodes (ZR, ZigBee router) must also be fully functional devices. The ZigBee routing node can participate in route discovery and message forwarding, and the coverage range of the network is expanded by connecting other nodes. Furthermore, the ZigBee routing node may also act as a common coordination point (ieee802.15.4 called coordination point) in its Personal Operating Space (POS). The common coordination point is different from the ZigBee coordination point, and is still controlled by the ZigBee coordination point.
A ZigBee end node (ZE) may be a full function device or Reduced Function Device (RFD) that is connected to the network through a ZigBee co-node or ZigBee routing node, but does not allow any other node to join the network through it, the ZigBee end node being capable of operating at very low power.
In the invention, the gateway is used as a ZigBee coordination point in the ZigBee network and is responsible for the establishment of the wireless sensor network. The WSN terminal can be used as a ZigBee routing node or a ZigBee terminal node to be added into the wireless sensor network. The gateway and the WSN terminal need to support the ZigBee communication technology. In order to distinguish different wireless sensor networks, when the gateway creates a wireless sensor network, the gateway needs to select a network identifier (PANID) for the wireless sensor network, and the wireless sensor network is identified by the network identifier. The network identification of the wireless sensor network can be specified by the gateway or the wireless sensor network management platform.
In the present invention, after the gateway creates the wireless sensor network, the gateway or the wireless sensor network management platform determines the network identifier of the wireless sensor network, and the wireless sensor network management platform records the information of the wireless sensor network, including: a network identifier of a wireless sensor network, information of a gateway in the wireless sensor network; the information of the gateway may comprise an identification of the gateway, a network address of the gateway in the telecommunication network, etc. The wireless sensor network management platform may maintain information of the wireless sensor network in a database. In the invention, the wireless sensor network where the WSN terminal is located is determined according to at least one of network identification information of the wireless sensor network where the WSN terminal is located, identification information of the gateway, address information of the gateway in the telecommunication network and interface information of the gateway connected with the telecommunication network.
In addition, in order to realize the security of the ZigBee network, the communication in the wireless sensor network may be encrypted, the encryption operation in the ZigBee network uses an Advanced Encryption Standard (AES) algorithm, and the length of the symmetric key used is 128 bits. The key used in the ZigBee network mainly includes:
master key (Masterkey). The key is a shared key used in performing a symmetric key establishment protocol. The master key is the basis for long-term security between two devices and can be used to generate the link key.
Link key (Linkkey). In a PAN network, a key is shared between two devices for secure communication between the two devices.
Network key (network key). The key is a key shared in a PAN network for security of broadcast communications.
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 devices to join the 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. The trust center provides the following three functions:
and (4) trust management. The task is to be responsible for authentication of devices joining the network.
And (5) network management. The task is to be responsible for acquiring and assigning network keys to devices.
And (5) configuration management. The task is to bind the application to the device it manages, and to achieve secure end-to-end transfer between the two devices.
To implement trust management, a device requires a trust center to receive an initial master key.
For network management purposes, the device should receive the initial network key and only obtain updates of the network key from the trust center.
To implement network configuration, a device needs to receive a master key or link key from a trust center to establish an end-to-end secure link between two devices.
In addition to the original master key, the additional link key, master key, network key can only be obtained from the trust center in a secure manner. The trust center should periodically update the network key according to some policy and communicate the new network key to each device.
In the invention, the gateway is used as a trust center to carry out the safety management of the network. In a wireless sensor network established by adopting a ZigBee technology, when a WSN terminal joins in the wireless sensor network, network configuration parameters for realizing safe communication are obtained from a gateway, the network configuration parameters can comprise a network address, an initial master key, a network key and the like, and the WSN terminal joins in the wireless sensor network by using the network configuration parameters and realizes the safe communication. The process of adding the WSN terminal into the wireless sensor network can adopt relevant specifications in the ZigBee technology, and the description is not repeated in the invention.
In the present invention, each WSN terminal may have an identity in order to identify the WSN terminal. For the identification of the WSN terminal, the WSN terminal may be identified in a format similar to International Mobile Equipment Identity (IMEI). The identity of the WSN terminal may be written into the WSN terminal by the WSN terminal device provider when the WSN terminal is produced.
In the invention, after the WSN terminal is added into the wireless sensor network, the gateway of the wireless sensor network records and stores the information of the WSN terminal, and the information of the WSN terminal comprises the identification of the WSN terminal, the network address of the WSN terminal in the wireless sensor network, the routing information of the WSN terminal and the like. The gateway of the wireless sensor network can adopt a database built in the gateway to store the information of the WSN terminal.
In the invention, after the WSN terminal is added into the wireless sensor network, the gateway in the wireless sensor network can inform the wireless sensor network management platform and the service platform. The method comprises the steps that a wireless sensor network management platform records and stores information of a WSN terminal, wherein the information of the WSN terminal comprises information such as an identification of the WSN terminal, a network identification of a wireless sensor network where the WSN terminal is located, and equipment capability parameters of the WSN terminal; the wireless sensor network management platform can store the information of the WSN terminal in a database. And the service platform configures relevant parameters of the service executed by the WSN terminal and enables the relevant service supported by the WSN terminal.
In the invention, the wireless sensor network management platform stores the information of the WSN terminal and the information of the wireless sensor network, so that the information of the wireless sensor network where the WSN terminal is located can be inquired according to the identification of the WSN terminal. The wireless sensor network management platform can firstly inquire the network identification of the wireless sensor network where the WSN terminal is located in the WSN terminal information stored by the wireless sensor network management platform according to the identification of the WSN terminal; and then inquiring corresponding wireless sensor network information in the wireless sensor network information stored in the wireless sensor network management platform according to the inquired network identifier of the wireless sensor network.
After the wireless sensor network and the telecommunication network are combined, when network unit entities such as a wireless sensor network management platform, a service platform and the like on the telecommunication network side execute management on the WSN terminal, for example, software upgrade, parameter update and the like of the WSN terminal, the network unit entities are required to be capable of finding the WSN terminal and establishing communication with the WSN terminal.
The following describes a method for a network element entity on a network side to find a WSN terminal and establish communication.
When the network element entity is a wireless sensor network management platform, the wireless sensor network management platform can inquire information in a wireless sensor network where the WSN terminal is located in the stored information of the WSN terminal according to the identification of the WSN terminal, then establish communication with a gateway in the wireless sensor network according to the obtained information and send the identification of the WSN terminal to the gateway, and the gateway finds the corresponding WSN terminal according to the identification of the WSN terminal.
The following describes a method for finding a WSN terminal and establishing communication by a wireless sensor network management platform with reference to fig. 2:
step 201, the wireless sensor network management platform queries information of a wireless sensor network where the WSN terminal is located according to the WSN terminal identifier.
Step 202, the wireless sensor network management platform establishes communication with a gateway in a wireless sensor network where the WSN terminal is located, and sends the searched identifier of the WSN terminal to the gateway. The wireless sensor network management platform can establish communication with the gateway according to the network address of the gateway in the wireless sensor network information in the telecommunication network.
Step 203, the gateway queries the network address of the WSN terminal in the wireless sensor network according to the identifier of the WSN terminal, and the gateway establishes communication connection with the WSN terminal according to the network address. The gateway can wake up the WSN terminal according to the ZigBee communication protocol and establish communication connection.
And step 204, the gateway informs the wireless sensor network management platform that the WSN terminal is found.
And step 205, the wireless sensor network management platform and the WSN terminal communicate through a gateway. The wireless sensor network management platform and the gateway can communicate by adopting a communication protocol of a telecommunication network, such as a TCP/IP protocol; and the WSN terminal and the gateway communicate with each other according to a ZigBee communication protocol. The wireless sensor network management platform can send data to the gateway, the gateway analyzes the data according to a communication protocol of a telecommunication network, and then the data obtained through analysis is packaged according to a ZigBee communication protocol and sent to the WSN terminal. The WSN terminal can send data sent to the wireless sensor network management platform to the gateway through the ZigBee protocol, the gateway analyzes the data according to the ZigBee communication protocol, and then the data obtained through analysis are packaged according to the communication protocol of the telecommunication network and sent to the wireless sensor network management platform.
When the network element entity is a service platform, the service platform can provide the searched identification of the WSN terminal to the wireless sensor network management platform, the wireless sensor network management platform can inquire the information in the wireless sensor network where the WSN terminal is located in the information of the WSN terminal stored in the wireless sensor network management platform according to the identification of the WSN terminal and provide the information to the service platform, the service platform establishes communication with a gateway in the wireless sensor network according to the obtained information of the wireless sensor network and sends the identification of the WSN terminal to the gateway, and the gateway finds the corresponding WSN terminal according to the identification of the WSN terminal.
The method for the service platform to find the WSN terminal and establish communication is described below with reference to fig. 3:
step 301, the service platform sends the found WSN terminal identifier to the wireless sensor network management platform.
Step 302, the wireless sensor network management platform queries information of a wireless sensor network where the WSN terminal is located according to the WSN terminal identifier, and then sends the information of the wireless sensor network to the service platform.
Step 303, the service platform establishes communication with a gateway in the wireless sensor network where the WSN terminal is located, and sends the found identifier of the WSN terminal to the gateway. The service platform can establish communication with the gateway according to the network address of the gateway in the telecommunication network in the wireless sensor network information.
And 304, the gateway inquires the network address of the WSN terminal in the wireless sensor network according to the identification of the WSN terminal, and the gateway establishes communication connection with the WSN terminal according to the network address. The gateway can wake up the WSN terminal according to the ZigBee communication protocol and establish communication connection.
Step 305, the gateway informs the service platform that the WSN terminal has been found.
And step 306, the service platform and the WSN terminal communicate through a gateway. The service platform can send the data to the gateway, the gateway analyzes the data according to a communication protocol of the telecommunication network, and then the data obtained by analysis is packaged according to a ZigBee communication protocol and sent to the WSN terminal. The WSN terminal can send data sent to the service platform to the gateway through the ZigBee communication protocol, the gateway analyzes the data according to the ZigBee communication protocol, and then the data obtained through analysis are packaged according to the communication protocol of the telecommunication network and sent to the service platform.
When other network element entities except the service platform and the wireless sensor network management platform search for the WSN terminal, the above procedure may also be adopted.
The combination network comprises a wireless sensor network and a telecommunication network, wherein a WSN terminal and a gateway are arranged in a WSN of the wireless sensor network; a wireless sensor network management platform is arranged in the telecommunication network; the specific structure can refer to the related protocol and the network structure shown in fig. 1, and specifically, the following network elements in the above-mentioned combination network have the following functions, which are described in detail below.
Network unit entities arranged in the telecommunication network, such as wireless sensor network management platform itself or wireless sensor network service platform and other entities, can also be other network entities; and when the network unit entity addresses the WSN terminal, the network unit entity obtains the information of the wireless sensor network where the WSN terminal is located from the wireless sensor network management platform, and finds the WSN terminal through the gateway of the wireless sensor network where the WSN terminal is located.
The wireless sensor network management platform is also used for storing the corresponding relation information between the WSN terminal and the wireless sensor network to which the WSN terminal belongs.
The wireless sensor network management platform stores information of a wireless sensor network, and the information of the wireless sensor network where the WSN terminal is located comprises at least one of network identification information of the wireless sensor network where the WSN terminal is located, identification information of a gateway, address information of the gateway in a telecommunication network and interface information of the gateway connected with the telecommunication network.
The wireless sensor network management platform stores information of the WSN terminal, wherein the information of the WSN terminal comprises an identifier of the WSN terminal and a network identifier of a wireless sensor network where the WSN terminal is located.
The communication connection between the network element entity and the wireless sensor network is established based on a network protocol supported by a telecommunication network;
the communication connection between the wireless sensor network and the WSN terminal is established based on a network protocol supported by the wireless sensor network.
And the network unit entity establishes communication connection with the gateway of the wireless sensor network according to the obtained information of the gateway of the wireless sensor network where the WSN terminal is located.
The network unit entity is a wireless sensor network management platform, or a wireless sensor network service platform, or other network unit entities.
The gateway of the wireless sensor network stores information of the WSN terminal in the wireless sensor network, wherein the information of the WSN terminal comprises an identifier of the WSN terminal and a network address of the WSN terminal in the wireless sensor network.
Specifically, when the network element entity is a wireless sensor network management platform; when the wireless sensor network management platform receives a service request related to a WSN terminal, the wireless sensor network management platform searches a wireless sensor network to which the WSN terminal belongs according to the WSN terminal identification information, determines gateway address information of the wireless sensor network, and establishes communication connection with a gateway of the wireless sensor network. The wireless sensor network management platform further initiates a searching request for the WSN terminal through communication connection with a gateway of the wireless sensor network, wherein the request carries the identification information of the WSN terminal;
and the gateway of the wireless sensor network further searches out the network address information of the WSN terminal according to the WSN terminal identification information.
When the network element entity is a wireless sensor network service platform arranged in the telecommunication network; when the wireless sensor network service platform receives a service request related to a WSN terminal, the WSN terminal identification information is forwarded to the wireless sensor network management platform; the wireless sensor network management platform searches a wireless sensor network to which the WSN terminal belongs according to WSN terminal identification information, determines gateway address information of the wireless sensor network, and sends the gateway address information of the wireless sensor network to the wireless sensor network service platform, and the wireless sensor network service platform establishes communication connection with a gateway of the wireless sensor network according to the gateway address of the wireless sensor network. The wireless sensor network service platform further initiates a searching request for the WSN terminal through communication connection with a gateway of the wireless sensor network, wherein the request carries the identification information of the WSN terminal;
and the gateway of the wireless sensor network further searches out the network address information of the WSN terminal according to the WSN terminal identification information.
The above-mentioned wireless sensor network service platform and the WSN terminal search performed by the wireless sensor network service platform are only exemplary illustrations, and are not used to limit the technical solution of the present invention.
It will be appreciated by those skilled in the art that the functions performed by the above-described network elements can be understood with reference to the associated description of the foregoing method.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention.
Claims (12)
1. An addressing method of a wireless sensor network terminal is applied to a combined network, the combined network comprises a wireless sensor network and a telecommunication network, and a Wireless Sensor Network (WSN) terminal and a gateway are arranged in the wireless sensor network; a wireless sensor network management platform is arranged in the telecommunication network; characterized in that the method comprises:
when a network element entity in the telecommunication network carries out addressing of the WSN terminal, information of a wireless sensor network where the WSN terminal is located is obtained from a wireless sensor network management platform, and the WSN terminal is found through a gateway of the wireless sensor network where the WSN terminal is located;
the information of the wireless sensor network where the WSN terminal is located is obtained from the wireless sensor network management platform, and the WSN terminal is found through the gateway of the wireless sensor network where the WSN terminal is located, and the method comprises the following steps:
the network unit entity obtains the information of the wireless sensor network where the WSN terminal is located from the slave wireless sensor network management platform according to the identification of the WSN terminal; according to the obtained information of the wireless sensor network where the WSN terminal is located, the network unit entity establishes communication connection with the wireless sensor network where the WSN terminal is located; and the network unit entity provides the identification of the WSN terminal to a gateway of the wireless sensor network where the WSN terminal is located, and the gateway of the wireless sensor network where the WSN terminal is located obtains the network address of the WSN terminal in the wireless sensor network according to the identification of the WSN terminal.
2. The method according to claim 1, wherein the wireless sensor network management platform stores therein correspondence information between the WSN terminal and a wireless sensor network to which the WSN terminal belongs.
3. The method according to claim 2, wherein the wireless sensor network management platform stores information of the WSN terminal, and the information of the WSN terminal comprises an identifier of the WSN terminal and a network identifier of a wireless sensor network in which the WSN terminal is located.
4. The method according to any one of claims 1 to 3, wherein the wireless sensor network management platform stores information of a wireless sensor network, and the information of the wireless sensor network where the WSN terminal is located includes at least one of network identification information of the wireless sensor network where the WSN terminal is located, identification information of a gateway, address information of the gateway in a telecommunication network, and interface information of the gateway connected with the telecommunication network.
5. The method of claim 1, wherein the gateway of the wireless sensor network stores information of the WSN terminals in the wireless sensor network, and the information of the WSN terminals comprises an identification of the WSN terminals and a network address of the WSN terminals in the wireless sensor network.
6. The method according to claim 1, wherein according to the obtained information of the wireless sensor network where the WSN terminal is located, the network element entity establishes a communication connection with the wireless sensor network where the WSN terminal is located, and the method comprises:
and the network unit entity establishes communication connection with the gateway of the wireless sensor network according to the obtained information of the gateway of the wireless sensor network where the WSN terminal is located.
7. The method of claim 4, wherein the network element entity is a wireless sensor network management platform, or a wireless sensor network service platform, or other network element entity.
8. A combined network comprises a wireless sensor network and a telecommunication network, wherein a WSN terminal and a gateway are arranged in a WSN; a wireless sensor network management platform is arranged in the telecommunication network; it is characterized in that the preparation method is characterized in that,
when the WSN terminal is addressed, a network unit entity arranged in the telecommunication network obtains information of a wireless sensor network where the WSN terminal is located from a wireless sensor network management platform, and finds the WSN terminal through a gateway of the wireless sensor network where the WSN terminal is located;
the network unit entity further acquires information of a wireless sensor network where the WSN terminal is located from the slave wireless sensor network management platform according to the identifier of the WSN terminal; according to the obtained information of the wireless sensor network where the WSN terminal is located, the network unit entity establishes communication connection with the wireless sensor network where the WSN terminal is located; and the network unit entity provides the identification of the WSN terminal to the wireless sensor network where the WSN terminal is located, and the wireless sensor network where the WSN terminal is located obtains the network address of the WSN terminal in the wireless sensor network according to the identification of the WSN terminal.
9. The combination network of claim 8, wherein the management platform of the wireless sensor network is further configured to store information of correspondence between the WSN terminal and the wireless sensor network to which the WSN terminal belongs.
10. The combination network of claim 8 or 9, wherein the wireless sensor network management platform stores information of a wireless sensor network, and the information of the wireless sensor network where the WSN terminal is located includes at least one of network identification information of the wireless sensor network where the WSN terminal is located, identification information of a gateway, address information of the gateway in the telecommunication network, and interface information of the gateway connected to the telecommunication network.
11. The combination network of claim 10, wherein the network element entity establishes a communication connection with the gateway of the wireless sensor network specifically according to the obtained information of the gateway of the wireless sensor network where the WSN terminal is located.
12. The bonding network of claim 11, wherein the network element entity is a wireless sensor network management platform, or a wireless sensor network service platform, or other network element entity.
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| CN201010209965.3A CN102300206B (en) | 2010-06-22 | 2010-06-22 | The addressing method of Wireless Sensor Network Terminal and in conjunction with network |
| PCT/CN2010/080262 WO2011160413A1 (en) | 2010-06-22 | 2010-12-24 | Wireless sensor network terminal addressing method and combined network |
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| CN102457581B (en) * | 2010-10-19 | 2016-04-13 | 中兴通讯股份有限公司 | The addressing method of Wireless Sensor Network Terminal and in conjunction with network |
| CN102938918B (en) * | 2012-10-19 | 2015-04-29 | 无锡赛睿科技有限公司 | Method, device and system for managing wireless sensor network (WSN) |
| 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 |
| CN108989467B (en) * | 2018-08-31 | 2020-10-30 | 安徽江淮汽车集团股份有限公司 | Centralized addressing method |
| CN109819029A (en) * | 2019-01-18 | 2019-05-28 | 成都众云微科技有限公司 | A kind of reversed addressing method based on electronics juqum stateless protocol |
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| CN101610505A (en) * | 2009-07-15 | 2009-12-23 | 常熟理工学院 | The realization system of full IP mobile wireless sensor network of next generation route |
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| KR101182422B1 (en) * | 2008-11-25 | 2012-09-12 | 한국전자통신연구원 | Apparatus and method for extending operational lifetime of wireless sensor network operated in IEEE802.15.4-2006 Beacon-enabled mode |
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