CN102469553B

CN102469553B - The cut-in method of a kind of wireless sensor network and system

Info

Publication number: CN102469553B
Application number: CN201010551354.7A
Authority: CN
Inventors: 马景旺
Original assignee: ZTE Corp
Current assignee: Jiangsu Chengxi Baoxing Education Industry Development Co.,Ltd.
Priority date: 2010-11-19
Filing date: 2010-11-19
Publication date: 2016-06-08
Anticipated expiration: 2030-11-19
Also published as: WO2012065418A1; CN102469553A

Abstract

The invention discloses the cut-in method of a kind of wireless sensor network (WSN) and system, system includes: WSN and communication network, wherein, configures multiple gateway in WSN, and communication network includes management platform and the NE of WSN; Management platform, for preserving the WSN terminal in WSN and the corresponding relation of gateway being assigned with thereof; WSN terminal in WSN, for the gateway accessing communication network by distributing; NE, for obtaining the information of the gateway that WSN terminal is assigned with from management platform, and sets up the communication between WSN terminal by the gateway information obtained. Pass through the present invention, it is achieved that when WSN configure multiple gateway communication network in NE and the WSN terminal in wireless sensor network between communication.

Description

The cut-in method of a kind of wireless sensor network and system

Technical field

The present invention relates to the communication technical field that wireless sensor network (WSN, WirelessSensorNetwork) is combined with communication network, particularly relate to cut-in method and the system of a kind of wireless sensor network.

Background technology

WSN, as the product calculating, communicating and sensor three technology combines, is a kind of brand-new Information acquisition technology. Due to the improvement of the technology of recent miniature manufacture, mechanics of communication and battery technology, promote small WSN terminal can have the ability of sensing, wireless telecommunications and the information of process. This type of WSN terminal is not only able to object and the change of sensing and detecting environment, and can process the data collected, and the data after processing are delivered to DCC in the way of being wirelessly transferred. These WSN terminals are generally made up of these several parts of power supply, awareness tool, flush bonding processor, memorizer, communication component and software. Wherein, power supply provides the energy necessary to normal operation for sensor node; Awareness tool is for perception, the information obtaining the external world, and is converted into digital signal; Flush bonding processor is responsible for the work of coordinator node each several part, and the information as awareness tool is obtained carries out the process of necessity, preservation, controls the mode of operation etc. of awareness tool and power supply; Communication component is responsible for the communication with other sensors or observer; Software then provides necessary software support for sensor node, such as embedded OS, embedded type database system etc. By means of various informative sensing element built-in in WSN terminal, measure the heat in the surrounding enviroment of place, infrared, sonar, radar and seismic signal, thus detection includes numerous material phenomenons such as temperature, humidity, noise, light intensity, pressure, soil constituent, the size of mobile object, speed and direction. WSN terminal constitutes network typically via self-organizing or pre-configured mode. On communication mode, although the various ways such as wired, wireless, infrared and light can be adopted, use it is generally understood that short-range wireless low power communication technology is best suitable for sensor network, so-called WSN.The currently used wireless low power communication technology widely that compares includes: Institute of Electrical and Electric Engineers (IEEE, InstituteofElectricalandElectronicsEngineers) 802.15.4 and ZigBee technology etc. Wherein, Zigbee is similar with bluetooth, is a kind of emerging short distance wireless technical.

IEEE802.15.4 is the Low rate wireless personal area network standard developed by IEEE. IEEE802.15.4 defines physical layer and MAC layer standard, and the communication module meeting IEEE802.15.4 standard possesses low cost, low power consumption, undersized feature.

Zigbee alliance is one and is devoted on the basis of open global standards, exploitation reliably, low cost, low power consumption, monitoring that wireless network connects and the tissue that controls product. The physical layer of Zigbee standard and media access control layer adopt IEEE802.15.4 technology, and Internet, safety management, application layer specification and intercommunity are developed by Zigbee alliance. Zigbee intelligent energy common application specification (Zigbeesmartenergypublicapplicationsprofile) and Zigbee home automation using standard (Zigbeehomeautomationpublicapplicationsprofile) in Zigbee standard are respectively directed to business environment application and domestic. applications.

The microprocessing capability of WSN terminal and wireless communication ability make WSN have broad application prospects, and its application includes Military Application, biology and environmental monitoring, healthy application, domestic. applications, Industry Control and monitoring etc.

WSN and communication network combine, such as 2G mobile communication, 3G mobile communication, DSL communication technology (xDSL), fiber optic communication (FTTx), broadband wireless access, satellite/microwave etc., WSN can be made as the extension of existing network, extend the ability of communication network, make communication object expand to physical world from people, there is good development prospect. After WSN is combined with existing communication network, the data that can make Sensor Network perception are effectively delivered to data center, by to the arrangement of data and analysis, the mankind that change of high degree can obtain the mode of data of natural world, it also is able to the management that WSN is concentrated simultaneously, solves the unmanageable problem of WSN being dispersed at present everywhere.

WSN is combined with communication network, refers to and is connected with communication network by WSN, utilizes communication network that the business of WSN and offer thereof is monitored, manages and carrying and the cooperation of finishing service are implemented, and by business that communication network extension WSN provides. The combination of WSN and telecommunications network is usually WSN and is connected to telecommunications network platform by gateway device.

WSN terminal is constitute the sensor node of WSN, jumps by one or multi-hop is connected with gateway. WSN terminal is responsible for gathering and uploading data, and receives and perform order. WSN terminal several hundreds ofs at most at least of composition WSN, can as required with the mode networking such as star, tree-like or netted (mesh) between WSN terminal, some of which WSN terminal or have stronger networking and data forwarding capability. In a WSN, gateway is responsible for the data of WSN terminal to report, sends the related network elements to communication network, and dependent instruction is sent to WSN terminal by gateway by the related network elements in communication network. And when adopting conventional IEEE802.15.4 and ZigBee technology at WSN, generally it is responsible for creating WSN by gateway, responsible WSN terminal joins and departs from management during Sensor Network, preserves the significant data such as the configuration information of WSN terminal and the service configuration information of Sensor Network in gateway.

The data of WSN terminal to report, require over the related network elements that gateway is sent in communication network, and generally only one gateway of configuration in existing WSN, for the data of WSN terminal to report being transmitted to the related network elements in communication network, thus when the WSN terminal quantity in WSN is relatively more or during the frequent reported data of WSN terminal, gateway in WSN can be caused very big load, the data causing WSN terminal can not send in time, and congested problem occurs communicating between WSN terminal and gateway. So, the normal operation having influence on WSN that meeting is serious. It addition, when the NE of communication network side performs the management of the WSN terminal in wireless sensor network, it is necessary to set up and the communicating of WSN terminal by the gateway of wireless sensor network; If the gateway unit of communication network side is only communicated with the WSN terminal foundation in wireless sensor network by a gateway, cause relatively larger bearing pressure can to equally this gateway, the gateway unit causing communication network side can not be set up with the WSN terminal in wireless sensor network timely and communicate, and affects the properly functioning of related service. Accordingly, it would be desirable to consider the related network elements of communication network side how with the problem such as the WSN terminal in wireless sensor network communicates. At present, under the scene that WSN and communication network combine, not yet there is effective solution for this problem.

Summary of the invention

In view of this, present invention is primarily targeted at cut-in method and system that a kind of wireless sensor network is provided, with realize when WSN configure multiple gateway communication network in NE and the WSN terminal in wireless sensor network between communication.

For reaching above-mentioned purpose, the technical scheme is that and be achieved in that:

The invention provides the access system of a kind of wireless sensor network (WSN), this system includes: WSN and communication network, wherein, configures multiple gateway in described WSN, and described communication network includes management platform and the NE of WSN,

Described management platform, for preserving the corresponding relation of the gateway that the WSN terminal in WSN is assigned with it;

WSN terminal in described WSN, communication network described in the gateway accessing by distributing;

Described NE, for obtaining the information of the gateway that described WSN terminal is assigned with from management platform, and sets up the communication between described WSN terminal by the gateway information obtained.

Multiple gateways in described WSN adopt master-slave mode,

Primary gateway, for carrying out scheduling and the distribution of gateway in the plurality of gateway, gateway used during for described WSN terminal distribution access communication network; The gateway distributed is primary gateway self or any one is from gateway;

Described from gateway, provide communication network to access for the described WSN terminal that is scheduling to according to described primary gateway.

Described primary gateway is further used for, when described WSN terminal application adds WSN, the gateway used when accessing described communication network for described WSN terminal distribution, the information of described WSN terminal, communication connection configuration information are sent to the gateway distributed, and the information of distributed gateway, communication connection configuration information are sent to described WSN terminal; The corresponding relation of gateway being additionally operable to described WSN terminal be assigned with it is sent to described management platform and preserves.

Described management platform is further used for, and when receiving the described registration request from gateway, record is described from the relevant information of gateway, and notifies that described primary gateway has and new add WSN from gateway;Wherein, the described relevant information from gateway at least includes: described mark from gateway and from gateway address communication network;

Accordingly, described primary gateway is further used for, and the network configuration parameters required for will be added to described WSN is sent to described from gateway;

Described it is further used for from gateway, uses the network configuration parameters obtained to join described WSN.

Multiple gateways in described WSN adopt equity mode of operation,

Described management platform is further used for, gateway used when accessing communication network for the WSN terminal distribution in described WSN.

Described NE is further used for, and sends the request obtaining the gateway that WSN terminal is assigned with to described management platform, and at least a part of which comprises the mark of described WSN terminal;

Accordingly, described management platform is further used for, it is determined that the information of the gateway that described WSN terminal is assigned with also is supplied to described NE;

Described NE is further used for, and sets up communication connection according to the information of the gateway obtained with described gateway, and the mark of described WSN terminal is supplied to the gateway being assigned with, and sets up the communication with described WSN terminal by the gateway being assigned with.

Present invention also offers the cut-in method of a kind of wireless sensor network, be applied to WSN and the network architecture that communication network combines, the method includes:

Configuring multiple gateway in described WSN, the management platform in described communication network preserves the corresponding relation of the gateway that the WSN terminal in WSN is assigned with it;

WSN terminal in described WSN is by communication network described in the gateway accessing of distribution, and described NE obtains the information of the gateway that described WSN terminal is assigned with from management platform, and sets up the communication between described WSN terminal by the gateway information obtained.

Multiple gateways in described WSN adopt master-slave mode, and the method farther includes:

Primary gateway carries out scheduling and the distribution of gateway in the plurality of gateway, gateway used during for described WSN terminal distribution access communication network; The gateway distributed is primary gateway self or any one is from gateway;

Communication network is provided to access from gateway according to the described WSN terminal that is scheduling to of described primary gateway.

The method farther includes: described primary gateway is when described WSN terminal application adds WSN, the gateway used when accessing described communication network for described WSN terminal distribution, the information of described WSN terminal, communication connection configuration information are sent to the gateway distributed, and the information of distributed gateway, communication connection configuration information are sent to described WSN terminal; The corresponding relation of the gateway also described WSN terminal being assigned with it is sent to described management platform and preserves.

The method farther includes:

Described management platform is when receiving the described registration request from gateway, and record is described from the relevant information of gateway, and notifies that described primary gateway has and new add WSN from gateway; Wherein, the described relevant information from gateway at least includes: described mark from gateway and from gateway address communication network;

Described primary gateway will be added to described WSN required for network configuration parameters be sent to described from gateway;

The described network configuration parameters obtained from gateway use joins described WSN.

Multiple gateways in described WSN adopt equity mode of operation, and the method farther includes:

Described management platform is that the WSN terminal distribution in described WSN accesses gateway used during communication network.

Described NE obtains the information of the gateway that WSN terminal is assigned with from management platform, and sets up the communication between WSN terminal by the gateway information obtained, particularly as follows:

Described NE sends the request obtaining the gateway that WSN terminal is assigned with to described management platform, and at least a part of which comprises the mark of described WSN terminal;

Described management platform is determined the information of the gateway that described WSN terminal is assigned with and is supplied to described NE;

Described NE sets up communication connection according to the information of the gateway obtained with described gateway, and the mark of described WSN terminal is supplied to the gateway being assigned with, and sets up the communication with described WSN terminal by the gateway being assigned with.

The cut-in method of a kind of wireless sensor network provided by the present invention and system, WSN and communication network in conjunction with time, a WSN configures multiple gateway, the access of communication network is provided by the WSN terminal in multiple gateways respectively WSN, thus improve the communication network access capability of WSN, can effectively solve in prior art because of WSN terminal by a gateway accessing communication network time, the problem that the data caused can not send in time and WSN is congested. In addition, management platform preserves the corresponding relation of the gateway that WSN terminal is assigned with it, NE in communication network can pass through the gateway that is assigned with and set up and the communicating of WSN terminal, so the NE in communication network sets up the multiple gateways that also can pass through in wireless sensor network when communicating with the WSN terminal in wireless sensor network, enables the NE in communication network to set up with WSN terminal timely and communicates.

Accompanying drawing explanation

Fig. 1 be the embodiment of the present invention WSN in network architecture schematic diagram when there is multiple gateway;

Fig. 2 is the flow chart that in the embodiment of the present invention, WSN configures multiple gateway;

Fig. 3 is that in the embodiment of the present invention, WSN terminal adds WSN, and when adopting the mode of operation of master and slave gateway, for the flow chart of this WSN terminal distribution gateway;

Fig. 4 is that in the embodiment of the present invention, WSN terminal adds WSN, and when adopting equity mode of operation between the multiple gateway of WSN, for the flow chart of this WSN terminal distribution gateway;

Fig. 5 is that in the embodiment of the present invention, business platform sets up, with the WSN terminal in WSN, the flow chart communicated.

Detailed description of the invention

Below in conjunction with the drawings and specific embodiments, technical scheme is described in detail.

The basic thought of the present invention is: configure multiple gateway in a WSN; WSN terminal in WSN, by the gateway accessing communication network being assigned with; Management platform in communication network preserves the WSN terminal in WSN and the corresponding relation of gateway being assigned with thereof, NE in communication network can obtain the information of the gateway that WSN node is assigned with from management platform, and then sets up the communication with WSN terminal by this gateway.

In multiple gateways of WSN, it is possible to adopt master-slave mode or equity mode of operation.

Under master-slave mode, in multiple gateways of WSN configuration, one of them gateway is primary gateway, and remaining gateway is from gateway. The gateway that primary gateway uses when accessing communication network for specifying WSN terminal, WSN terminal is by the gateway accessing specified by primary gateway to communication network. It is pointed out that this gateway specified can be primary gateway self, it is also possible to for one of them from gateway. Communication network is provided to access from gateway WSN terminal specified by primary gateway.

Primary gateway is responsible for the establishment of WSN, joins WSN from gateway as the routing node WSN. From gateway join WSN time, need to register in management platform, management platform record from the relevant information of gateway, at least should include from the mark of gateway, from information such as gateway addresses communication network, and notified that the primary gateway in WSN has by management platform and new join this WSN from gateway.Communication network access capability that after joining this WSN from gateway, primary gateway record should may include that from gateway address in a WSN from the information of gateway from the information of gateway, can provide from gateway address communication network, from gateway etc. If adopting same address from gateway address among this WSN and the address in communication network, then primary gateway has only to record this address. Primary gateway and WSN can be passed through from the communication between gateway, it is also possible to pass through communication network.

When WSN terminal adds WSN, primary gateway is this WSN terminal distribution access gateway of using of telecommunications network according to the dependency rule that gateway distribute, and the gateway of this distribution can be primary gateway, it is also possible to for from gateway. To the aspect such as length of the route of gateway, primary gateway can determine that WSN node accesses the gateway that telecommunications network uses according to the load balancing between the topology of network, gateway, WSN node. When carrying out the distribution of gateway, the information (such as gateway address in a WSN) of the gateway of distribution is supplied to this WSN terminal by primary gateway, and WSN terminal preserves the information of the gateway distributed, and is created to the routing iinformation of this gateway; The information (including the mark of WSN terminal, WSN terminal address in a WSN) of this WSN terminal is supplied to the gateway distributed by primary gateway, the information of this WSN terminal of gateway record distributed.

Primary gateway preserves the corresponding relation of the gateway that the WSN terminal in WSN is assigned with it, and the information of this corresponding relation is sent to management platform, and management platform preserves the information of this corresponding relation. This corresponding relation can adopt the form of corresponding table to realize, and records the mark of WSN terminal and the mark of its gateway being assigned with in this corresponding relation. Certain WSN terminal can be inquired by this corresponding relation and access the gateway that communication network uses, and certain gateway in WSN provides communication network to access for which the WSN terminal in WSN.

It addition, after WSN terminal addition WSN, primary gateway can change WSN terminal and access the gateway that communication network uses. The gateway newly specified by primary gateway provides communication network to access for this WSN terminal, and original gateway no longer provides communication network to access for this WSN terminal.

When WSN terminal leaves WSN, the gateway that primary gateway and this WSN terminal access communication network use can remove the information of each this WSN terminal of preservation, the primary gateway gateway corresponding with this WSN terminal, after WSN terminal leaves WSN, no longer provides communication network to access for this WSN terminal.

Under equity mode of operation, management platform it is the gateway that the WSN terminal distribution in WSN accesses that telecommunications network uses. In multiple gateways of WSN configuration, it is possible to being created WSN by a gateway, remaining gateway joins WSN as the routing node in WSN. Management platform preserves the information of the gateway in WSN, including the communication network access capability etc. of address in communication network of the mark of gateway, gateway and gateway address in a WSN, gateway.

Before WSN terminal adds WSN, can being write, by management platform, the network configuration parameters added required for WSN in WSN terminal by client or other modes, this network configuration parameters can be obtained by the management platform responsible gateway creating WSN from the WSN that WSN terminal application adds. When WSN terminal adds WSN, proposing to add the request of WSN to the gateway creating WSN, this request includes the information such as the mark of WSN terminal, and the information of WSN terminal can be sent to management platform by the gateway creating WSN.After management platform receives the information of the WSN terminal that the gateway creating WSN sends, it is one gateway of this WSN terminal distribution according to the dependency rule of gateway distribution. The information of the gateway of distribution can be sent to the gateway creating WSN by management platform, the gateway creating WSN the gateway information (such as gateway address in a WSN) of distribution is sent to this WSN terminal; WSN terminal preserves the information of the gateway distributed, and is created to the routing iinformation of this gateway. The information of this WSN terminal is sent to (including the mark of WSN terminal, WSN terminal address in a WSN) gateway of this distribution, the information of this WSN terminal of gateway record of described distribution by management platform by the communication connection of communication network; It addition, management platform can also indicate that the information of this WSN terminal is sent to (including the mark of WSN terminal, WSN terminal address in a WSN) gateway of this distribution by the gateway creating WSN by the communication connection in WSN.

Under equity mode of operation, management platform preserves the corresponding relation of the gateway that the WSN terminal in WSN is assigned with it, this corresponding relation can adopt the form of corresponding table to realize, and records the mark of WSN terminal and the mark of its gateway being assigned with in this corresponding relation. Management platform can inquire certain WSN terminal by this corresponding relation and access the gateway that communication network uses, and certain gateway in WSN provides communication network to access for which the WSN terminal in WSN.

It is that after the WSN terminal distribution in WSN accesses the gateway that telecommunications network uses, management platform preserves the corresponding relation of the gateway that the WSN terminal in WSN is assigned with it by above-mentioned two ways. If the NE in communication network (such as business platform) preparation foundation communicates with the WSN terminal in WSN, NE in communication network can obtain this WSN terminal from management platform and access the information (such as the address of gateway, mark) of the gateway that telecommunications network uses, and then passes through this gateway and sets up the communication with this WSN terminal.

Based on above-mentioned thought, present invention also offers a kind of WSN and the network architecture that communication network combines, wherein, WSN is made up of WSN terminal and gateway (multiple), WSN terminal is connected to communication network by the gateway being each assigned with, and sets up with the management platform in communication network and other NEs (such as business platform) etc. and communicates. Management platform, for preserving the corresponding relation of the gateway that the WSN terminal in WSN is assigned with it. WSN terminal in WSN, for the gateway accessing communication network by distributing. NE, for obtaining the information of the gateway that WSN terminal is assigned with from management platform, and sets up the communication between WSN terminal by the gateway information obtained; Specifically include: NE sends the request obtaining the gateway that WSN terminal is assigned with to management platform, and at least a part of which comprises the mark of WSN terminal; Management platform is determined the information of the gateway that WSN terminal is assigned with and is supplied to NE; NE sets up communication connection according to the information of the gateway obtained with gateway, and the mark of WSN terminal is supplied to the gateway being assigned with, and sets up the communication with WSN terminal by the gateway being assigned with.

Further, the multiple gateways in WSN can adopt master-slave mode, and primary gateway carries out scheduling and the distribution of gateway in multiple gateways, gateway used during for WSN terminal distribution access communication network; The gateway distributed is primary gateway self or any one is from gateway; Communication network is provided to access from gateway according to the WSN terminal that is scheduling to of primary gateway.

Further, the multiple gateways in WSN can also adopt equity mode of operation, then management platform is that the WSN terminal distribution in WSN accesses gateway used during communication network.

In sum, by method and system provided by the invention, multiple gateway can be configured in a WSN, communication network is provided to access by multiple gateways for the WSN terminal in WSN, thus improve the communication network access capability of WSN, it is possible to the problem that the effective wireless sensor network solving to exist when WSN terminal accesses communication network is congested. Additionally, management platform preserves the corresponding relation of the gateway that WSN terminal is assigned with it, NE in communication network can pass through the gateway that is assigned with and set up and the communicating of WSN terminal, so the NE in communication network sets up the multiple gateways that also can pass through in wireless sensor network when communicating with the WSN terminal in wireless sensor network, enables the NE in communication network to set up with WSN terminal timely and communicates.

It is further elaborated in conjunction with the specific embodiment cut-in method to above-mentioned WSN and system below.

System embodiment:

WSN is by one group of wireless sensor node equipment, the wireless network that such as WSN terminal forms in an ad-hoc fashion; WSN terminal room communicates with the short distance wireless communication technology. WSN is typically deployed at several meters to the regional extent of hundreds of rice, and wherein, WSN terminal is usually battery-powered, has relatively low power consumption and cost. Close range communication techniques is generally adopted Zigbee and IEEE802.15.4 technology.

WSN is combined with communication network, refers to and is connected with communication network by WSN, utilizes communication network that the business of WSN and offer thereof is monitored, manages and carrying and the cooperation of finishing service are implemented, and by business that communication network extension WSN provides. Communication network includes the multiple communication networks such as mobile communications network, xDSL, FTTx, satellite communication.

In the present embodiment, when WSN combines with communication network, multiple WSN terminals in WSN are by the system architecture diagram of multiple gateway accessing communication networks as shown in Figure 1, the dash area with reticule filling in Fig. 1 represents multiple WSN terminal, and the dash area that point is filled represents the region at multiple WSN terminal place. Hereinafter the system architecture of Fig. 1 is specifically described.

In Fig. 1, WSN is made up of multiple WSN terminals and multiple gateway, multiple WSN terminals and multiple gateway can set up wireless sensor network according to the Its Relevant Technology Standards of WSN, and the close range communication techniques that can be used for setting up WSN includes ZigBee technology, IEEE802.15.4 standard etc. WSN is connected to communication network by multiple gateways, sets up with the management platform of WSN in communication network etc. and communicates. Wherein, mode of operation and the equity mode of operation of principal and subordinate's gateway can be adopted between multiple gateways.

In order to realize the connection of WSN and communication network, WSN passes through multiple gateway accessing communication networks, and via communication network and Access Network, core net, business platform, WSN management platform be connected. WSN terminal is connected to communication network by multiple gateways. WSN terminal is constitute the sensor node of WSN, jumps by one or multi-hop is connected with gateway. WSN terminal is responsible for gathering and uploading data, and receives and perform order. WSN terminal several hundreds ofs at most at least of composition WSN, WSN terminal room can as required with star, tree-like or netted (mesh) mode networking, some of which WSN terminal or have stronger networking and data forwarding capability.

Gateway is responsible for connecting WSN and communication network, mainly completes the functions such as protocol conversion, address mapping and data forwarding, it is also possible to the function such as integrated security and charging. The function of gateway support may include that support sensor network internal data is collaborative and converges; Support, with one or more of the telecommunication access waies such as 2G mobile communication, 3G mobile communication, xDSL, FTTx, broadband wireless access, satellite/microwave, the data of convergence to be transferred to Correspondent Node; Support that business platform and remotely administered server are to the device authentication of gateway and user authentication; Support that business platform and remotely administered server are to the parameter of gateway and software arrangements; Support user authentication and service security, equipment control security mechanism.

Business platform is the functional entity running and managing the business combined with WSN in communication network, is responsible for integrating the business that each service provider provides, and provides it to terminal use, terminal use uses the situation of business be managed simultaneously. Business platform can according to the needs of different business, and in collaborative communication network, other functional entitys complete whole operation flow, for instance certification, mandate and charging (AAA, AuthenticationAuthorizationandAccounting) server. Business platform can also be connected with remote server, directly business is updated.

The management platform of WSN is that WSN implements the entity of management function, and management platform can be made up of management server, and management server passes through communication network and WSN implements management function.

Embodiment of the method:

The embodiment of the method one of the present invention describes WSN and configures the process of multiple gateway, particularly as follows:

First being created WSN by gateway in multiple gateways, after this gateway creates WSN, the information of WSN (such as the network identity etc. of WSN) is sent to management platform, management platform preserves the information of this WSN and this gateway.

Other gateway can join this WSN as the routing node in WSN, and idiographic flow is as in figure 2 it is shown, comprise the following steps:

Step 201, the communication connection that other gateways (i.e. other gateways except creating the gateway of WSN, also referred to as new gateway) are provided by communication network is registered in management platform.

Here, described new gateway is after the WSN region that application adds is installed, it is possible to set up communication connection by communication network with management platform, sends registration request to management platform. Management platform can carry out authentication by the identity of described new gateway, it is determined that the verity of institute's new gateway identity. Pre-saving the information of new gateway to some extent in management platform, this information includes the position etc. of the network accessibility parameter of institute's new gateway, installation.

Step 202, management platform notice WSN is responsible for the WSN gateway created, has new gateway application to join this WSN.

Here, according to the position that new gateway prepares to install, management platform determines that new gateway prepares the WSN added, then notify that the gateway creating this WSN has new gateway application to join this WSN. The information of this new gateway can be sent to the gateway creating this WSN by management platform simultaneously, and the information of this new gateway may include that new gateway address in communication network, network accessibility parameter etc.

Step 203, creates the network configuration parameters required for the gateway of WSN will be added to this WSN and is sent to the new gateway of registration.

Here, create the gateway of WSN and this new gateway is joined this WSN network configuration parameters needed be sent to management platform, then by this network configuration parameters by management platform and created the gateway address in communication network of WSN and be sent to this new gateway.Here network configuration parameters includes creating the gateway address in a WSN of WSN, initial master key etc.

Step 204, new gateway uses the network configuration parameters obtained to join WSN.

Here, new gateway carries out scan channel after obtaining the network configuration parameters of WSN in the overlay area of this WSN, then sends association request (AssociationRequest) frame to the gateway creating this WSN, and request joins this WSN. The gateway of described new gateway and this WSN of establishment is held consultation according to initial master key, it is determined that netkey, link key and address etc. New gateway record, from the address in this WSN and dependent routing information, creates the information of the address in this WSN of the new gateway described in the gateway record of this WSN and described new gateway.

Gateway can be communicated and exchange correlation data etc. by this WSN between gateway after adding WSN. Gateway address in communication network can adopt IP address, and owing to preserving the IP address in communication network of the other side between gateway, both sides can also be communicated by communication network.

By above-described embodiment one, WSN can configure multiple gateway.

In Zigbee network, in order to make WSN terminal can add WSN, WSN terminal needs first to obtain, from the management platform of WSN, the network configuration parameters added needed for WSN, and network configuration parameters includes: the address of the gateway of the initial master key of the WSN that add and establishment WSN. When WSN terminal adds WSN, create the verity of the initial master key of the gateway authentication WSN terminal of WSN, thus verifying the identity of this WSN terminal. If the initial master key of this WSN terminal is correct, this WSN terminal is then allowed to add WSN, can hold consultation based on initial master key between WSN terminal and the gateway creating WSN, determine the link key required for this WSN of addition, netkey and address etc., thus realizing WSN terminal successfully add this WSN. When not possessing the WSN terminal application addition WSN of network configuration parameters, because not being provided that initial master key or initial master key are not correct keys, the gateway of establishment WSN then can be refused this WSN terminal and add this WSN.

Here, WSN terminal manufacturer is when producing WSN terminal, in WSN terminal, do not write the network configuration parameters of WSN, it is possible in WSN terminal, write the network configuration parameters of its WSN to add before being taken into use by client or other modes by management platform in WSN terminal. Management platform can obtain, from the gateway creating WSN, the network configuration parameters added required for this WSN.

It is pointed out that the management platform of WSN can be passed through two ways and obtain the network configuration parameters of WSN. First kind of way is: management platform sends to the gateway creating WSN and obtains the request of WSN network configuration parameters, and the gateway creating WSN provides WSN terminal to add the network configuration parameters required for this WSN. The second way is: after WSN creates, and the gateway creating WSN will add the network configuration parameters required for this WSN, it is provided that to the management platform of WSN, and preserves in the management platform of WSN.

The embodiment of the method two of the present invention describes and adopts in the WSN that ZigBee technology is set up, and WSN terminal adds WSN, and when adopting the mode of operation of master and slave gateway, for the process of this WSN terminal distribution gateway. In this process, primary gateway is the gateway creating WSN. As it is shown on figure 3, detailed process comprises the following steps:

Step 301, writes the network configuration parameters of the WSN that WSN terminal application adds in WSN terminal.

Step 302, WSN terminal use the network configuration parameters application of WSN to join WSN, and WSN terminal is verified by primary gateway, if the verification passes, then perform step 303; If authentication failed, then perform step 304.

In this step, WSN terminal is placed on the WSN preparing the to add region covered. After WSN starting up of terminal starts, WSN terminal first can carry out network sweep on the channel set, it is determined that the WSN that add. Network sweep can pass through to send beacon request (BeaconRequest) frame on channel, after the equipment in WSN on this channel receives BeaconRequest, if allowing new WSN terminal to add this WSN, Beacon frame will be responded, whether this Beacon frame contains the address information of the WSN terminal sending this frame, and allow other WSN terminals to add in the way of its child node. The information of the Beacon frame received is saved in the contingency table (neighbortable) of self by WSN terminal.

Here, WSN terminal selects suitable father node in contingency table, and sends association request (AssociationRequest) frame request addition WSN to father node. Being in after the WSN terminal of the father node of WSN receives the request adding WSN, the primary gateway of notice WSN has new WSN terminal request to add WSN.

WSN terminal is verified by the primary gateway of WSN, and the method that verification method can join network according to Zigbee specification interior joint equipment, primary gateway judges the verity of the initial master key in WSN terminal. If WSN terminal authentication passes through, then perform the operation of step 303; If the failure of WSN terminal authentication, then carry out the operation of step 304.

Step 303, after WSN terminal authentication passes through, communicate negotiation with primary gateway and determine link key and netkey, primary gateway adds the information of this WSN terminal in node management table, the father node equipment of WSN terminal preserves the information of this WSN terminal in the neighboar lists of self, and WSN terminal preserves the information of father node and primary gateway in the neighboar lists of self. So far, WSN terminal is successfully joined WSN.

Step 304, WSN terminal authentication does not pass through, and primary gateway is refused this WSN terminal and added WSN.

Step 305, primary gateway is the gateway that this WSN terminal specifies that access communication network uses.

Here, according to the correlation principle that gateway distributes, primary gateway determines that this WSN terminal accesses the gateway that communication network uses. The information of this WSN terminal and communication connection configuration information can be sent to the gateway distributed by primary gateway, and information and the described communication connection configuration information of the gateway distributed are sent to this WSN terminal by primary gateway.

Described communication connection configuration information is to set up the link key that communication connection is required between this gateway specified and this WSN terminal, is set up the communication connection of safety between this gateway specified and this WSN terminal by this link key.

Step 306, this WSN terminal of management platform of the primary gateway notice WSN of WSN has been added to WSN, and the corresponding relation of gateway WSN terminal being assigned with it is sent to management platform.

In this step, management platform preserves the relevant information of this WSN terminal, including the corresponding relation of the gateway that the mark of WSN terminal, the WSN terminal corresponding relation of WSN affiliated with it, WSN terminal are assigned with it; The relevant information of WSN terminal is also sent to business platform by management platform, the related data of business platform configuration WSN terminal, enables the business that WSN terminal is supported.

Visible, by said process, WSN terminal writes network configuration parameters and add the WSN specified, and the primary gateway of WSN specify this WSN terminal and access the gateway that communication network uses, enable this WSN terminal to pass through gateway to business platform reported data.

It should be noted that access the information such as gateway that communication network uses to record WSN terminal in WSN, primary gateway preserves the corresponding relation of the gateway that the WSN terminal in WSN is assigned with it.

After WSN terminal joins WSN, would be likely to occur the situation needing to change the gateway that WSN terminal access communication network uses, such as: primary gateway can be WSN terminal select another one apart from this WSN terminal closer to from gateway, thus reducing this WSN terminal and from the routed path between gateway, reach to reduce the communication complexity in WSN and energy-conservation effect. Now, the new gateway that WSN terminal provides communication network to access can be appointed as by primary gateway, the information of this WSN terminal and communication connection configuration information can be sent to newly specified gateway by primary gateway, and gateway changes the gateway that message informing provided communication network to access for this WSN terminal originally. Newly specified gateway adds the configuration information of this WSN terminal in this gateway, and gateway originally is deleted the communication network of this WSN terminal preserved in this gateway and accessed configuration information. Newly specified gateway provides communication network to access for this WSN terminal, and gateway originally no longer provides communication network to access for this WSN terminal.

Add the terminal of WSN when leaving WSN, primary gateway and this WSN terminal access the gateway that communication network uses, the communication network that can remove each this WSN terminal of preservation accesses configuration information, the gateway that primary gateway is corresponding with this WSN terminal, no longer provides communication network to access for this WSN terminal after WSN terminal leaves WSN.

The embodiment of the method three of the present invention describes and adopts in the WSN that ZigBee technology is set up, and WSN terminal adds WSN, and when adopting equity mode of operation between the multiple gateway of WSN, for the process of this WSN terminal distribution gateway. In this process, management platform is the gateway that WSN terminal distribution accesses that communication network uses. As shown in Figure 4, detailed process comprises the following steps:

Step 401, writes the network configuration parameters of the WSN that WSN terminal application adds in WSN terminal.

Step 402, WSN terminal uses the network configuration parameters application of WSN to join WSN, and WSN terminal is verified by the gateway creating WSN, if the verification passes, then performs step 403; If authentication failed, then perform step 404.

In this step, WSN terminal is placed on the WSN preparing the to add region covered. After WSN starting up of terminal starts, WSN terminal first can carry out network sweep on the channel set, it is determined that the WSN that add. Network sweep can pass through to send beacon request (BeaconRequest) frame on channel, after the equipment in WSN on this channel receives BeaconRequest, if allowing new WSN terminal to add this WSN, Beacon frame will be responded, whether this Beacon frame contains the address information of the WSN terminal sending this frame, and allow other WSN terminals to add in the way of its child node. The information of the Beacon frame received is saved in the contingency table of self by WSN terminal.

Here, WSN terminal selects suitable father node in contingency table, and sends AssociationRequest frame request addition WSN to father node.Being in after the WSN terminal of the father node of WSN receives the request adding WSN, notice creates the gateway of WSN has new WSN terminal request to add WSN.

WSN terminal is verified by the gateway creating WSN, the method that verification method can join network according to Zigbee specification interior joint equipment, and the gateway creating WSN judges the verity of the initial master key in WSN terminal. If WSN terminal authentication passes through, then perform the operation of step 403; If the failure of WSN terminal authentication, then carry out the operation of step 404.

Step 403, after WSN terminal authentication passes through, communicate negotiation with the gateway creating WSN and determine link key and netkey, the gateway creating WSN adds the information of this WSN terminal in node management table, the father node equipment of WSN terminal preserves the information of this WSN terminal in the neighboar lists of self, and WSN terminal preserves the information of the gateway of father node and establishment WSN in the neighboar lists of self. So far, WSN terminal is successfully joined WSN.

Step 404, WSN terminal authentication does not pass through, and the gateway creating WSN refuses this WSN terminal addition WSN.

Step 405, after WSN terminal adds WSN, the information of this WSN terminal is sent to management platform by the gateway creating WSN.

Step 406, management platform is the gateway that this WSN terminal specifies that access communication network uses.

In this step, management platform preserves the information of this WSN terminal, determines that this WSN terminal accesses the gateway that communication network uses according to the correlation principle of gateway distribution. The information of the gateway of distribution can be sent to the gateway creating WSN by management platform, this gateway the gateway information (such as gateway address in a WSN) of distribution is sent to this WSN terminal; WSN terminal preserves the information of the gateway distributed, and is created to the routing iinformation of this gateway. The information (mark of WSN terminal, WSN terminal address in a WSN) of this WSN terminal is sent to the gateway distributed by management platform by the communication connection of communication network, the information of this WSN terminal of gateway record of described distribution.

Management platform preserves the corresponding relation of the gateway that this WSN terminal is assigned with it.

Step 407, this WSN terminal of management platform of the gateway notice WSN creating WSN has been added to this WSN.

Step 408, the information of WSN terminal is sent to business platform by management platform, the related data of business platform configuration WSN terminal, enables the business that WSN terminal is supported.

By the description of embodiment two and embodiment three, after WSN terminal adds WSN, management platform preserves the corresponding relation of the gateway that the WSN terminal in WSN is assigned with it; NE in communication network can obtain WSN terminal from management platform and access the information of the gateway that communication network uses.

The business platform that the embodiment of the method four of the present invention describes in communication network sets up, with the WSN terminal in WSN, the process communicated, as it is shown in figure 5, comprise the following steps:

Step 501, business platform sends the request obtaining the gateway that WSN terminal is assigned with to management platform.

Including at least the mark of WSN terminal in the solicited message that business platform sends to management platform.

Step 502, management platform is determined the information of the gateway that this WSN terminal is assigned with and is supplied to business platform.

The corresponding relation of the gateway that management platform is assigned with it in WSN terminal according to the mark of WSN terminal makes a look up, obtain the mark of the gateway that this WSN terminal is assigned with, the information of the gateway then preserved in management platform according to the mark of gateway is inquired about, it is thus achieved that to information such as this gateway addresses in communication network. The information of the gateway that inquiry obtains is sent to business platform by management platform.

Step 503, business platform sets up communication connection according to the information of the gateway obtained with this gateway.

In this step, business platform sets up communication according to gateway address in communication network and corresponding gateway.

Step 504, the mark of WSN terminal is supplied to gateway by business platform, is set up and the communicating of WSN terminal by gateway.

In this step, the mark preparing to set up the WSN terminal of communication is supplied to gateway by business platform, and gateway is inquired about in the information of the WSN terminal of its preservation, obtains the address of this WSN terminal, and communicates with the foundation of this WSN terminal; WSN terminal is communicated by the foundation of this gateway with service terminal, the data communicated between gateway forwards WSN terminal and business platform.

By above-mentioned process, business platform can actively initiate and set up and the communication of WSN terminal, and other NEs (except business platform, management platform) in communication network can also adopt above-mentioned process to set up and the communicating of WSN terminal.

When management platform actively sets up the communication with WSN terminal, management platform can be passed through to inquire about in the corresponding relation of the gateway that the mark of WSN terminal is assigned with it in the WSN terminal that self preserves, it is thus achieved that to the information of the gateway of correspondence; Then set up with this gateway and communicate, and the mark of WSN terminal is supplied to this gateway; This gateway searches out the WSN terminal of correspondence and communicates with the foundation of WSN terminal; Management platform and WSN terminal are communicated by this gateway.

Again referred to above is set up WSN and the related content that WSN is managed by ZigBee technology below, illustrates as follows:

ZigBee is the radio network technique of a kind of emerging short distance, low rate, low cost, low-power consumption. It adopts DSSS (DSSS, DirectSequenceSpreadSpectrum) technology, and operating frequency is 868MHz, 915MHz or 2.4GHz. ZigBee-network has the node of 3 kinds of types: ZigBee focal point, ZigBee routing node and ZigBee terminal node.

Wherein, ZigBee focal point in IEEE802.15.4 also referred to as individual territory net (PAN, PersonalAreaNetwork) focal point (ZC, ZigBeeCoordinator), in a WSN can as aggregation node. ZigBee focal point must be full-function device (FFD, Full-FunctionDevice), a ZigBee-network only one of which ZigBee focal point, and it than other nodes with better function in network, is often the main controlled node of whole network. It is responsible for initiating set up new network, setting network parameter, the node managed in network and store nodes information etc., and network can also perform the function of router after being formed.

ZigBee routing node (ZR, ZigBeeRouter) also must be full-function device. ZigBee routing node can participate in route discovery, message forwards, and carrys out the coverage etc. of extended network by connecting other node. Additionally, ZigBee routing node can also serve as common focal point in its individual working place (POS, PersonalOperatingSpace), IEEE802.15.4 is called focal point. Common focal point is different from ZigBee focal point, and it is still by the control of ZigBee focal point.

ZigBee terminal node (ZE, ZigBeeEndDevice) can be full-function device or reduced function device (RFD, Reduced-FunctionDevice), it is withered a little by ZigBee association or ZigBee routing node is connected to network, but not allowing other any nodes to add network by it, ZigBee terminal node can with low-down Power operation.

In the present invention, primary gateway (or gateway of responsible WSN establishment), as the Zigbee focal point in Zigbee network, is responsible for the establishment of WSN.WSN terminal can add WSN as Zigbee routing node or Zigbee terminal node; WSN is added as Zigbee routing node from gateway (or other gateways except the gateway creating WSN). Gateway and WSN terminal need to support Zigbee communication technology.

It addition, for the safety realizing Zigbee network, it is necessary to the communication in WSN is encrypted, cryptographic calculation in Zigbee network, adopting advanced encryption standard algorithm (AES, AdvancedEncryptionStandard), the symmetric key length of employing is 128. The key used in Zigbee network specifically includes that master key (MasterKey), link key (LinkKey) and netkey (NetworkKey). Wherein, master key is carried out symmetric key and sets up the shared key used in protocol procedures, is the basis of long-term safety between two equipment, and can be used for generating link key; Link key, in a PAN net, is the key shared between two equipment, for the secure communication between two equipment; Netkey is the key shared in a PAN network, for the safety of broadcast communication.

, in Zigbee network, there is trust center in the management etc. of safety and key for realizing Zigbee network. Trust center is a kind of trusted devices distributing safety key in a network, and it allows equipment to add network, and distributes key, accordingly ensure that end-by-end security between equipment. In the network adopting security mechanism, network coordinator can become trust center. Trust center provides following three kinds of functions:

(1) trust management: task is responsible for the device authentication adding network.

(2) network management: task is responsible for obtaining and distribute network key to equipment.

(3) configuration management: task is the apparatus bound application program to its management, realizes end-by-end security transmission between both devices.

In order to realize trust management, equipment needs to receive initial master key from trust center. In order to realize the purpose of network management, equipment should receive initial netkey, and can only obtain the renewal of netkey from trust center. In order to realize network configuration, equipment needs to receive master key or link key from trust center, to set up the end-to-end security link of two equipment rooms.

Except initial master key, additional link key, master key, netkey are merely able to adopt the mode of safety to obtain from trust center. Trust center should be updated periodically netkey according to a certain strategy, and sends new netkey to each equipment.

In the present invention, primary gateway carry out the safety management of network as trust center. The identity that can pass through gateway between management platform and other NEs in gateway and telecommunications network realizes the authentication to gateway and secure communication.

In the present invention, by certain WSN of network identity identification of WSN. After gateway creates WSN, it is possible to by gateway or the network identity being determined this WSN by management platform, management platform records the relevant information including network identity and network site of WSN. Thus, management platform can according to whether this position of given position judgment exists the WSN managed by this management platform, if there is WSN can obtain the mark of the WSN in this position, so that it is determined that at the WSN of this position.

The above, be only presently preferred embodiments of the present invention, is not intended to limit protection scope of the present invention.

Claims

1. the access system of a wireless sensor network WSN, it is characterised in that this system includes: WSN and communication network, wherein, configures multiple gateway in described WSN, described communication network includes management platform and the NE of WSN,

Described management platform, for preserving the corresponding relation of the gateway that the WSN terminal in WSN is assigned with it; And determine the information of gateway that described WSN terminal is assigned with and be supplied to described NE;

Described NE, for sending the request obtaining the gateway that WSN terminal is assigned with to described management platform, at least a part of which comprises the mark of described WSN terminal; Information according to the gateway obtained sets up communication connection with described gateway, and the mark of described WSN terminal is supplied to the gateway being assigned with, and sets up the communication with described WSN terminal by the gateway being assigned with.

2. the access system of wireless sensor network according to claim 1, it is characterised in that the multiple gateways in described WSN adopt master-slave mode,

3. the access system of wireless sensor network according to claim 2, it is characterized in that, described primary gateway is further used for, when described WSN terminal application adds WSN, the gateway used when accessing described communication network for described WSN terminal distribution, the information of described WSN terminal, communication connection configuration information are sent to the gateway distributed, and the information of distributed gateway, communication connection configuration information are sent to described WSN terminal; The corresponding relation of gateway being additionally operable to described WSN terminal be assigned with it is sent to described management platform and preserves.

4. the access system of wireless sensor network according to Claims 2 or 3, it is characterized in that, described management platform is further used for, when receiving the described registration request from gateway, record is described from the relevant information of gateway, and notifies that described primary gateway has and new add WSN from gateway; Wherein, the described relevant information from gateway at least includes: described mark from gateway and from gateway address communication network;

5. the access system of wireless sensor network according to claim 1, it is characterised in that the multiple gateways in described WSN adopt equity mode of operation,

6. a cut-in method for wireless sensor network, is applied to WSN and the network architecture that communication network combines, it is characterised in that the method includes:

WSN terminal in described WSN is by communication network described in the gateway accessing of distribution, and the NE in described communication network sends the request obtaining the gateway that WSN terminal is assigned with to described management platform, and at least a part of which comprises the mark of described WSN terminal;

7. the cut-in method of wireless sensor network according to claim 6, it is characterised in that the multiple gateways in described WSN adopt master-slave mode, and the method farther includes:

8. the cut-in method of wireless sensor network according to claim 7, it is characterized in that, the method farther includes: described primary gateway is when described WSN terminal application adds WSN, the gateway used when accessing described communication network for described WSN terminal distribution, the information of described WSN terminal, communication connection configuration information are sent to the gateway distributed, and the information of distributed gateway, communication connection configuration information are sent to described WSN terminal; The corresponding relation of the gateway also described WSN terminal being assigned with it is sent to described management platform and preserves.

9. the cut-in method of wireless sensor network according to claim 7 or 8, it is characterised in that the method farther includes:

10. the cut-in method of wireless sensor network according to claim 6, it is characterised in that the multiple gateways in described WSN adopt equity mode of operation, and the method farther includes: