CN101471899A - Network data access method, access gateway and system capable of supporting sensor - Google Patents

Network data access method, access gateway and system capable of supporting sensor Download PDF

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Publication number
CN101471899A
CN101471899A CN 200710173077 CN200710173077A CN101471899A CN 101471899 A CN101471899 A CN 101471899A CN 200710173077 CN200710173077 CN 200710173077 CN 200710173077 A CN200710173077 A CN 200710173077A CN 101471899 A CN101471899 A CN 101471899A
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sensor
network
ip
data
access
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CN 200710173077
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Chinese (zh)
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姚春燕
温海波
军 郑
马松伟
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上海贝尔阿尔卡特股份有限公司
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Priority to CN 200710173077 priority Critical patent/CN101471899A/en
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Abstract

The invention provides a sensor network data access method, and an access gateway and a system thereof. The sensor networks are linked via gateways and IP network systems to support access to sensor network data. The access method comprises the following steps: (a) storing target access equipment information in a gateway; (b) searching the target access equipment information by the gateway when the gateway starts routing the sensor data from a sensor network linked with the gateway according to target node information of the sensor data; (c) carrying out IP data encapsulation of the sensor data with the obtained target access equipment information and sending to target access equipment via an IP network; and (d) decapsulating the received IP data packet by the target access equipment.

Description

一种支持传感器网络数据访问方法及其接入网关、系统 Sensor network for supporting data access method and an access gateway, the system

技术领域 FIELD

本发明涉及通信技术领域,尤其涉及一种传感器网络 The present invention relates to communications technologies, and in particular relates to a sensor network

(Sensor Network)所4吏用的教:才居通^f言处理。 (Sensor Network) The 4 officials used to teach: just living through ^ f word processing. 背景技术 Background technique

随着传感器技术、无线通信技术、计算技术的不断发展和完善,各种传感器网络将遍布我们生活环境。 With the development of sensor technology, wireless communication technology, computing technology and improvement of various sensor networks will be all over our living environment. 传感器网络可对给定区域中被观测对象的参数值测定、感兴趣事件的4企测和相关参数估计、对纟皮观测对象的分类和识别以及对一皮观测对象的定位和跟踪等功能,具有广阔应用前景,广泛应用于国防军事、安全反恐、 环境监测、交通管理、医疗卫生、抗突救险和工业生产制造等领域。 Sensor network parameter values ​​may be given area of ​​the observed object measured, and the measured half 4 event of interest estimated parameters of Si and skin observed object recognition and classification of the object to be observed a skin location and tracking functions, It has broad application prospects, widely used in national defense, security, anti-terrorism, environmental monitoring, traffic management, health care, anti-sudden wrecker and industrial manufacturing and other fields.

通常,作为孤立网的一个传感器网络系统,它在其系统内部具有相对独立的、特定的通信和路由协议方式,典型的通信协议方式如IEEE 802. 15. 4/ZigBee标准的无线传感器网络;典型的3各由协i义如泛洪(Flooding)协i义、Gossiping (闲取卩)十办i义、SPIN 协议、定向扩散(Directed Dif fus ion)协_汉、LEACH (低能量自适应聚类层次结构)协议等以保证传感器节点进行合理的信息路由、传递、汇聚。 Typically, isolated as a sensor network system network, it is relatively independent of specific communication protocols and routing manner, a typical communication protocols such manner IEEE 802. 15. 4 / ZigBee standard for wireless sensor networks within their system; typical each of the three co-i sense as flooding (flooding) RA i Yi, Gossiping (idle taken Jie) ten i do justice, SPIN protocol directed diffusion (directed Dif fus ion) co _ Han, of LEACH (low energy adaptive poly class hierarchy) protocol to ensure reasonable information for the sensor node routing, transmission, aggregation. 但它也需要一种方式方便例如客户机、其它传感器网络中的传感器节点等在内的目标访问设备访问该传感网络系统中的传感器节点。 But it also requires a way of example to facilitate a client, other sensor nodes in a sensor network, including a device to access the target access node of the sensor network sensor system. 例如:客户机可以作为管理节点,对传感器网络系统中的传感器节点进行配置和管理,发布监测任务以及收集监测数据,此外,其它传感器网络系统中的传感器节点作为协同工作节点,也需要对传感器网络系统中的传感器节点进行访问。 For example: client may as a management node, the sensor node of a sensor network system configuration and management, publishing monitoring tasks and collect monitoring data, in addition, other sensor network system, sensor nodes as a work node, but also the need for the sensor network the sensor system access nodes. 但是,实际客户机或其它传感器网络系统的传感器节点通常处在远离该被访问传感器网络系统的传统IP网络(或其它具体网络形式)另外一端,如此,目标访问设备与被访问的传感器网络系统中的传感器节点之间跨越了多种不同的通信体制,不能直接有效地互联互通,从而限制了传感器网络在实际中的应用, 因此,传感器网络系统的远程接入访问、以及传感器网络系统之间的互联逐渐成为一个当前迫切需要解决的问题。 However, the actual client sensor nodes or other sensor network systems is usually located remote from the sensor network systems to access the traditional IP network (Internet or other specific forms) the other end, so the target access device and a sensor network system in the visited spans between a plurality of different sensor nodes of the communication system, can not be directly and effectively interconnected, thus limiting the application of sensor networks in practice, therefore, access remote access to the sensor network system, and a sensor network system between Internet is becoming a problem to be solved urgently.

在图1所示网络系统中,客户机121通过IP网络系统12对传感器网络10进行访问,通过在传感器网络和IP网络系统之间设置一个定制的代理网关11, IP网络系统12中客户机121和传感器网络10中的传感器节点101间的交互都需通过代理网关11,该代理网关可以工作于两种方式:作为中继、或作为前端。 In the network system shown in FIG. 1, the client 121 via the IP network 10 to access the sensor network system 12, pass between the sensor network and the IP network system provided a custom proxy gateway. 11, the IP network 121 a client system 12 101 and the interaction sensor nodes 10 are subject to a sensor network gateway 11 through a proxy, the proxy gateway can work in two ways: as a relay, or as a front end.

1) 、作为中继时,它只是简单地将来自传感器网络10中传感器节点101产生的数据传递到IP网络系统12中的客户机121,客户机121必须首先向代理网关11进行注册,代理网关再根据前述注册信息将数据从传感器网络系统传输到已注册的客户机121。 Data transfer 1), as a relay, it simply from the sensor network 101 generates a sensor node 10 to the system 12 IP network client 121, the client 121 must first be registered to the proxy gateway Proxy Gateway 11 then the data transmission according to the registration information from the sensor network system to the client 121 has been registered. 显然,在这种方式下,传感器网络系统10中传感器节点必须以高频率的周期通过网关11向客户机121发送更新的数据, 以确保数据的实时性,如此将导致IP网络系统的数据流量负担。 Clearly, in this manner, the sensor 10 in the sensor network system node sends a cycle of a high frequency through the gateway 11 updates data to the client 121 to ensure real-time data, such data will result in an IP network system traffic load .

2) 、作为前端时,该代理网关11提前搜集来自传感器网络系统IO中传感器节点数据,并将信息存储在其数据库中,客户机121 可以通过各种方式(如通过SQL,或基于Web接口查询)向该代理网关11查询传感器网络系统10中特定传感器节点101的信息。 2), as the front end, the proxy gateway 11 in advance to collect data from the sensor network system node IO sensor, and stores the information in its database, the client 121 can be by various means (e.g. With SQL, or Web Interface Query ) information to the sensor nodes 10 in a particular proxy gateway 11 queries 101 the sensor network system. 很显然,在这种方式下,传感器节点必须以高频率的周期向代理网关11发送更新的数据,以确保数据库的实时性,这势必会加速消耗掉传感器节点的有限能量,导致其生存时间减少。 Obviously, in this manner, the sensor node must send a periodic high frequency data updates to the proxy gateway 11 in order to ensure the real-time database, which is bound to accelerate the energy consumed in limited sensor nodes, leading to its survival time is reduced .

另外,上述代理方式还存在如下缺陷: 一个代理网关通常专用于特定的任务或特定的协议,因此,特定的应用需要特定的代理实现,代理网关之间也没有通用的路由机制,传感器网络系统之间的互联存在一定的问题。 Further, the above-described embodiment further has the following disadvantages agent: an agent gateway is typically dedicated to a specific task or a particular protocol, therefore, required for specific applications to achieve specific proxy, there is no generic proxy gateway between the routing mechanism, the sensor network system there are some problems interconnection between. 在图2所示网络系统中,传感器网络10将TCP/IP协议作为其通信协议,可以实现其与任何IP网络系统12的无缝联接。 In the network system shown in FIG. 2, the sensor network 10 to the TCP / IP as its communication protocol, which may be implemented with any IP network seamlessly coupling system 12. 只需将一个或多个传感器节点联接到IP网络12而不需引入中介节点或网关。 Or simply coupling a plurality of sensor nodes to the IP network 12 without introducing intermediate nodes or gateways. 然而, 一般的传感器节点缺少必要的内存和计算资源, 无法运行完整的TCP/IP协议栈。 However, sensor nodes generally lack the necessary memory and computing resources to run a full TCP / IP protocol stack. 尽管可将TCP/IP协议栈进行裁减以满足资源需求,如瑞典计算机科学学院实现了wIP在仅有2kB内存、8位处理器节点上的运行,但将TCP/IP协议用于传感器网络还存在大量问题。 Although the TCP / IP protocol stack can be cut to meet the resource requirements, such as the Swedish Institute of Computer Science in wIP achieved only 2kB memory, running on eight-processor nodes, but the TCP / IP protocols for sensor networks still exist a lot of problems. 其主要表现在:路由算法不适合于传感器网络、数据包头开销太大、TCP重传机制耗费过多能量、无法提供安全机制,以及需要假设传感器网络中的节点分配有IP地址。 Its main features: routing algorithm is not suitable for sensor networks, packet header overhead is too large, TCP retransmission consume too much energy, can not provide security, and the need to assume that node sensor network has assigned an IP address.

图3揭示了另一种基于延时容忍网络(DTN)的传感器网络与IP网络集成的方案。 Figure 3 discloses another delay tolerance based network (the DTN) network and an IP network sensor integrated solution. 在DTN框架下,IP网络12与传感器网络IO之间放置了一个DTN网关14 (与图1所述的代理网关11 放置位置相似),但是DTN网关14采用特有的覆盖层(Overlay) 技术来实现传感器网络10与IP网络12之间的连接。 In DTN frame, placed between the IP network 12 and a sensor network DTN IO gateway 14 (FIG proxy gateway 11 is placed according to a similar position), but the gateway 14 using the unique DTN cover layer (the Overlay) technology to achieve 10 is connected between the sensor network 12 and the IP network. 它可以采用两种覆盖层方案:1) 、 IP网络覆盖传感器网络;2)、传感器网络覆盖IP网络。 It can take two cover layers scheme: 1), IP network coverage sensor network; 2), the sensor network coverage IP network. 在传感器网络IO覆盖IP网络12结构下, 客户机121被看成是配置在IP网络12中的传感器网络10的一个虚拟节点,该虚拟节点是相对传感器网络10而言的,逻辑上被当作与传感器网络10中传感器节点101功能相同的同等实体。 In the configuration of the sensor network IO 12 IP network coverage, the client 121 is configured as a sensor network 12 in a virtual network IP node 10, the node is a virtual sensor network 10 relative terms, it is treated as a logical the sensor network 101 functions the same sensor nodes 10 in the same entity. 传感器网络中实际传感节点101与作为虚拟节点的客户机121 通过覆盖层技术互联,形成虚拟传感器网络。 Sensing the actual sensor network as a client node 101 and node 121 through the virtual overlay network layer technology, virtual sensor network is formed. 通常在DTN中,对信道可靠性没有要求,采用机会主义的方式接收和发送数据,通信延时不可预测,因此DTN的特点是能够允许大的通信延时。 Usually in the DTN, the reliability is not required for the channel, using opportunistic fashion receive and transmit data, the communication delay and unpredictable, and therefore is capable of allowing the characteristics DTN large communication delays.

发明内容 SUMMARY

本发明旨在基于现有IP网络系统提供给目标访问设备对远程传感器网络系统接入访问方法、以及所对应的系统、网关i殳备 The present invention aims to provide a system based on existing IP network access device to the target access system, access to a remote sensor network method, and corresponding system, a gateway apparatus Shu i

6等。 6 and so on.

根据本发明的一个方面,这里提供一种传感器网络数据访问方法,所述传感器网络通过网关与IP网络系统相连接、以提供 According to one aspect of the present invention, there is provided a data access method of a sensor network, the sensor network connected to the IP network through a gateway system to provide

对传感器网络数据访问,包括如下步骤:a)、在网关中保存目标访问设备信息;b)、网关对来自所连接的传感器网络的传感器数据进行路由处理时,根据其目标节点信息查找目标访问设备信息;c)、根据所获得的目标访问设备信息对传感器数据进行IP 数据封装并通过IP网络发送至目标访问设备;d)、目标访问设备对接收到的IP数据包进行解封装处理。 Data access to a sensor network, comprising the steps of: a), the save destination access device information in the gateway; when B), the gateway of the sensor data from the sensor network connected to the routing process to find the target access device based on their destination node information information; c), the target access device according to the obtained information of the encapsulated IP data and sensor data sent to the target device accessed through the IP network; d), a target access device received IP packet decapsulation.

根据本发明的另外一个方面,这里提供一种传感器网络系统,包括:第一传感器网络,由若干传感器节点组成;第一网关, 与所述第一传感器网络相连,对来自第一传感器网络的协议数据进行路由处理时,根据其目标节点信息查找其目标访问设备信息、并以目标访问设备信息对特定协议数据进行IP数据封装并提供给IP网络;IP网络系统,与所述第一网关相连,对其IP 数据进行路由;目标访问设备,与所述IP网络系统相连,对接收到的IP数据包进行解封装处理 According to another aspect of the present invention, there is provided a sensor network system, comprising: a first sensor network, a plurality of sensor nodes; a first gateway, a first sensor connected to the network protocol from the first sensor network route data processing, in accordance with the objective to find the target access node information which the device information, and information of the target access device encapsulates the IP data to a particular protocol data and provided to the IP network; IP network system connected to the first gateway, for its IP routing data; target access device, connected to the IP network system, the received IP packet decapsulation

根据本发明的另外一个方面,这里提供一种一种支持对传感器网络数据访问的网关,其包括:传感器网络接口装置:接收来自传感器网络的传感器节点特定协议数据并进行相应路由处理; 映射装置:用于保存目标访问设备信息、并根据所述传感器节点协议数据的目标节点信息获得所述目标访问设备信息;IP网络接口装置:以所获得的目标访问设备信息对所述特定协议数据进行IP数据封装并发送至所连接的IP网络。 According to another aspect of the present invention, there is provided a sensor network for supporting data access gateway, comprising: a sensor network interface device: receiving sensor data from the sensor node specific network protocol and routing processing accordingly; mapping means: target access device for storing information, and obtain the target device information according to a target access node of the protocol data information of sensor node; IP network interface device: the device accessing the target information obtained by the IP data of the particular data protocol encapsulated and delivered to the IP network is connected.

本发明所带来的有益效果为:将不同的特定协议方式的传感器网络能通过通用的IP网络互相连接起来,从而多个小规模的、 孤立的、异构的传感器网络之间能够无缝地互联、执行数据交换、 执行统一的任务和服务,同时也方便客户机对所述传感器网络的管理、访问。 It brings benefits to the present invention: a sensor network by interconnecting different specific embodiment of the generic protocol IP network, thereby seamlessly between a plurality of small, isolated, heterogeneous networks to sensor Internet, data exchange, implementation of a unified mission and service, but also facilitate the management of the clients of the sensor network, access. 该发明也不改变现有传感器网络的结构和协议方式,它通过现有的IP网络为传感器网络间数据交换提供了一种有效的、实用的机制,无需在现有的传感器设备上开发附加的任何嵌入式IP协议栈或复杂的覆盖层网络。 The invention does not change the existing structure of sensor networks and protocols embodiment, it is the data exchange between the sensor network provides an efficient and practical mechanism through existing IP network, on the need to develop additional conventional sensor device any embedded IP protocol stack or complex overlay networks.

附图说明 BRIEF DESCRIPTION

通过下面提出的结合附图的详细描述,本发明的特征、性质和优点将变得更加明显,附图中相同的元件具有相同的标识,其 Detailed description set forth below in conjunction with the accompanying drawings, the present invention features, properties and advantages will become more apparent from the accompanying drawings in which like elements have the same identifier, which

中: in:

图1是基于代理网关方式的传感器网络系统访问示意; 图2是基于TCP/IP协议实现的传感器网络系统访问示意; 图3是基于延时容忍网络(DTN)网关方式的传感器网络系统访问方式; FIG 1 is a proxy gateway based sensor network system to access a schematic manner; FIG. 2 is a schematic accessible sensor network system TCP / IP protocol-based; FIG. 3 is a network based on the delay tolerance (the DTN) gateway mode sensor network system access method;

图4是本发明所提供的传感器网络系统访问、互联系统结构示意图; FIG 4 is a sensor network system according to the present invention provides access to a schematic structure of the interconnected system;

图5是本发明所提供的传感器网络接入网关结构实施例; 具体实施方式 FIG 5 is an embodiment of a network access gateway sensor structure of the present invention is provided; DETAILED DESCRIPTION

下面结合附图,对本发明的优选实施方式进行详细的说明。 Below with the accompanying drawings, preferred embodiments of the present invention will be described in detail. 图4是本发明所提供的传感器网络互联系统结构示意图,它包括两个独立的传感器网络IOA、 IOB、 IP网络系统12、传感器网络10A、 10B分别通过各自接入网关15A、 15B与IP网络系统12连接构成一个更大范围内意义上的传感器网络系统,客户机121 ( 15c)可以作为访问节点或管理节点通过IP网络系统12、 接入网关15A、 15B对传感器网络IOA、 IOB中的传感器节点分别进4亍访问、配置。 4 is a schematic configuration of the sensor network interconnection system provided by the present invention, which comprises two separate sensor network IOA, IOB, IP network system 12, sensor networks 10A, 10B, respectively, via respective access gateways 15A, 15B and the IP network system 12 connected to form a larger sensor network system within the scope of the meaning of the client 121 (15c) may be used as access node or management system 12 through the IP network node, an access gateway 15A, 15B of the sensor network IOA, IOB of sensor nodes 4, respectively, into the right foot access configurations.

一般说来,传感器节点通常是一个微型的嵌入式系统,由于携带有限的电池供电,它的处理能力、存贮能力和通信能力相对较弱。 Generally, a miniature sensor nodes are usually embedded system, since the limited battery carrying its processing power, storage capacity and communication capacity is relatively weak. 从网络功能上看,每个传感器节点兼顾传统网络节点的终端和路由器双重功能,除了进行本地信息收集和数据处理外,还要对其它传感器节点转发来得数据进行存贮、管理和信息融合等处理,同时与其它传感器节点协作完成一些特定任务。 From the functional point of view the network, each sensor node between the traditional router network node terminals and dual function, in addition to local information collection and data processing, but also come forward data storage processing, management and information fusion to other sensor nodes while cooperating with other sensor nodes to complete certain tasks. 以传感器网络10B为例说明,大量传感器节点随机部署在检测区域内部或 In sensor network 10B as an example, a large number of sensor nodes are randomly deployed inside the detection area or

附近,能够通过自组织方式构成网络。 Near, a network can be formed by self organization. 传感器节点102B监测的 Monitoring sensor nodes 102B

数据沿着其它传感器节点逐跳地进行传输,在传输过程中监测的数据可能被多个传感器节点处理,经过多跳路由后到达作为汇聚 Other sensor nodes along the data transmission hop, monitored data during transmission node processing a plurality of sensors may be, after a multi-hop route to the aggregation

节点的接入网关15B,最后通过IP网络(或卫星等其它方式) 到达目标访问设备-客户机121、或通过接入网关15A与IP网络相连的传感器网络10A中的目标传感器节点进行通信。 An access gateway node 15B, and finally reach the target access device by (a satellite or other means, etc.) IP network - the client 121, or target sensor nodes communicate through access gateway sensor network 10A and 15A is connected to the IP network.

前述目标访问设备要实现对传感器网络10A中传感器节点的数据访问,接入网关15B需要知道客户机121、或目标传感器网络10A的接入网关15A的IP地址,并能够将其接入的传感器网络10B的被访问的传感器节点数据(包括路由消息、数据消息等) 实时地、透明地传输给客户机121、或目标传感器网络IOA所在的接入网关15A并由其转发给所接入的传感器网络中的目标传感器节点(例如102A)。 To achieve the target access device to access the data in the sensor network of sensor nodes 10A, 15B need to know the access gateway client 121, a sensor network 10A or the target IP address of an access gateway. 15A, and is able to access its network of sensors accessed data sensor node 10B (including the routing message, data message, etc.) in real time, transparently to the client 121, or a target sensor networks 15A IOA located by the access gateway forwards the access to the network of sensors the target sensor nodes (e.g., 102A).

同样,我们也可以对接入网关15A进行配置,使其对应的传感器网络10A中的被访问的传感器节点数据实时地、透明地扩散到传感器网络10B中的目标传感器节点。 Similarly, we can configure the access gateway. 15A, so that the sensor nodes visited network 10A corresponding to the sensor data in real time, transparent diffused into the target sensor node in the sensor network 10B.

在接入网关15B与目标访问设备之间,可以采用特定的隧道协议对传感器IP数据进行封装处理并发送给目标访问设备,该方式利用Internet或其它7>共互联网络的基础设施为用户创建隧道,并提供与专用网络一样的安全和功能保障。 15B between the access gateway and the target access device can be used for a particular sensor IP tunneling protocol encapsulating data processing device sent to the target access, using the Internet or other embodiment 7> co internetwork infrastructure to create a tunnel for a user and provides private network functions like security and protection.

下面进一步揭示网关15A、 15B如何支持目标访问设备对传感器网络的数据访问。 The following further revealed gateway 15A, 15B how to support the objectives of access device data access to sensor networks.

首先、我们需要在网关中保存目标访问设备信息,可以通过管理配置或消息扩散配置等方式。 First, we need to save the target device to access information in the gateway, you can spread the message configuration management configuration or other means.

作为一种可选实施方式,客户机121可以通过IP网络对需要互相访问的传感器网络IOA、 10B所接入的网关15A、 15B进行配置,分别将对端的传感器网络的传感器节点、接入网关的IP 地址进行设置。 As an alternative embodiment, the client 121 may need to access the sensor network each IOA, 10B of the access gateways 15A, 15B through the IP network configuration, each sensor node of the sensor network will be terminated, the Access Gateway IP address settings.

作为一种可选实施方式,每个传感器网络的网关将该网关内 As an alternative embodiment, the gateway for each of the sensor network gateway

的传感器节点拓朴信息扩散到异地的对等通信的传感器网络的网关。 Diffusion sensor node topology information to the gateway of the sensor network to the remote peer communications. 这样传感器网络网关可以共享得到每个异地传感器节点的路由信息。 Such a sensor network gateway may share the routing information obtained for each remote sensor nodes. 比如,通过扩散共享,接入网关15B中可以保存传感器网络10A中所有传感器节点的信息以及所对应的接入网关15A 的IP地址对。 For example, diffusion through a shared access gateway 15B may be stored in a sensor network 10A and the information of all the sensor nodes of the access gateway corresponding to the IP address. 15A.

接下来,网关15B对来自所连接的传感器网络的传感器数据进行路由处理时,根据其目标节点信息查找目标访问设备信息; Next, when the gateway sensor data from the sensor network connected routable 15B, access device to find the target information based on which the target node information;

例如,传感器网络10B中的传感器节点101B的数据需要发送给客户机121,当其数据包被路由至网关15B,根据前述保存目标访问设备信息可以获得客户机121的IP地址"10. 10. 1. 101"。 For example, the sensor data of the sensor nodes 10B 101B needs to be sent to the client 121, when it is routed to the gateway packet 15B, destination IP address of the preceding access stored information of the device 121 can obtain the client's "10 10.1 . 101. "

同样,传感器网络10B中的传感器节点102B的数据被配置为发送给目标传感器网络10A中的一个节点102A时,当其特定协议数据包被路由至网关15B,根据前述保存的目标访问设备信息,可以获得目标传感器网络10A所对应的接入网关15A的IP 地址为"10. 10. 1. 102"。 Also, data of the sensor sensor nodes 10B, 102B are configured as transmission to a node 102A target sensor network 10A when its particular protocol packet is routed to the gateway 15B, according to the target access device information stored in the can obtaining target sensor network 10A corresponding to the IP address of the access gateway 15A is "10. 10. 1.102."

接下来,、网关15B以所获得的目标访问设备信息对传感器数据进行IP数据封装并通过IP网络发送至目标访问设备。 Next ,, the gateway device 15B to access the target information obtained is encapsulated IP data and transmits the sensor data to the target access device via an IP network.

例如,网关15B决定传感器数据需要传送至客户机121,它执行IP数据包封装处理并将封装后的IP数据包转发至IP网络12. For example, the gateway sensor 15B determines data to be transferred to the client 121, which performs the IP packet encapsulation process and encapsulated IP packets to the IP network 12.

同样,网关15B在获得目标传感器网络IOA所对应的接入网关15A的IP地址"10.10.1.102"后,可以执行IP数据包封装处理并将封装后的IP数据包转发至IP网络12并由其路由到接入网关15A。 Similarly, after obtaining the target gateway 15B in the sensor network IOA corresponding to the IP address of the access gateway. 15A "10.10.1.102", may be performed after the IP packet encapsulation process and encapsulated IP packets to the IP network 12 by which routed to the access gateway 15A.

优选地,网关15B可以采用特定的隧道协议对传感器IP数据进行封装处理并发送给目标访问设备。 Preferably, the gateway sensor 15B can encapsulate IP data sent to the target processing device to access a particular tunneling protocol employed. 隧道技术可分别以第2 Tunneling may be respectively 2

层或第3层隧道协议为基础,第2层隧道协议对应于0SI模型的数据链路层,使用帧作为数据交换单位,PPTP(点对点隧道协议)、 L2TP (第二层隧道协议)、L2F (第2层转发协议)都属于第2 层隧道协议,是将用户数据封装在点对点协议(PPP)帧中通过互联网发送;第3层隧道协议对应于0SI模型的网络层,使用包作为数据交换单位。 Layer or Layer 3 Tunneling base protocol, Layer 2 tunneling protocol corresponds to the data link layer 0SI model, using the frame as a unit of data exchange, the PPTP (Point to Point Tunneling Protocol), the L2TP (Layer Two Tunneling Protocol), L2F ( layer 2 forwarding protocol) belong to layer 2 tunneling protocol, is a user data is encapsulated and sent over the Internet to-point protocol (PPP) frame; layer 3 tunneling protocol corresponds to 0SI network layer model, use the package as a data exchange unit . IPIP UP over IP) 、 IPSec隧道模式属于第3层隧道协议,是将IP包封装在附加的IP包头中,通过IP 网络传送。 IPIP UP over IP), IPSec tunnel mode belonging to the third layer tunneling protocol, the IP packet is encapsulated in an additional IP header, the IP network. 无论哪种隧道协议都是由传输的载体、不同的封装格式以及用户数据包组成的。 Either tunneling protocol are transmitted by the carrier, different encapsulation formats and user data packets thereof.

最后,目标传感器网络的网关15A对接收到的传感器IP数据包进行解封装处理并进一步将所述传感器数据转发给传感器节点。 Finally, the target sensor network gateway docking sensor 15A is received IP packet decapsulation and further forwarding the sensor data to the sensor node.

若前面网关15B采用隧道技术对传感器IP数据进行封装, 这里,目标传感器网络10A所对应的网关15A采用同样的协议处理方式对话所接收到IP数据包进行反向处理。 If the gateway 15B in front of the sensor technology IP tunnel encapsulation data, where the target sensor network 10A corresponding to the data packet gateway 15A using the same IP protocol processing on the received dialogue reverse process.

图5是本发明所提供的传感器网络接入网关15B结构实施例,它主要包括:传感器网络装置51、映射处理装置52、 IP网络接口装置53,其中。 FIG 5 is a sensor network of the present invention provides an access gateway 15B in the configuration example embodiment, which includes: a sensor network device 51, the mapping processing means 52, IP network interface device 53, wherein.

传感器网络接口装置51作为南向接口、用于支持与其连接的本地传感器网络中的传感器节点进行通信,其它可以实现如下协议栈结构:物理层提供简单但健壮的信号调制和无线收发技术,例如IEEE 802. 15. 4无线个人区域网定义了2. 4GHz频段和868/915MHz频段两种物理层标准,其主要功能包括:激活和休眠射频收发器,信道能量检测,信道接收数据包的链路质量指示, 空闲信道评估,收发数据;数据链路层负责数据成帧、帧检测、 媒体访问和差4晉控制,例如IEEE802. 15. 4标准把数据链路层分为媒质接入层MAC和逻辑链路控制层LLC,MAC子层支持多种LLC 标准,MAC子层使用物理层提供的服务实现设备之间的数据帧传输,而LLC子层在MAC子层的基础上,给设备提供面向连接和无连接的服务;网络层主要负责路由生成与路由选择(例如: Zigbee )及其相应的3各由才几制(例如F Sensor network interface device as a southbound interface 51, a sensor support local sensor network nodes connected thereto communicates, other structures may be implemented as a protocol stack: the physical layer provides a simple but robust signal modulation and radio technologies, such as IEEE 802. 15.4 defines a wireless personal area network 2. 4GHz band and 868 / 915MHz band two physical layer standards, which main function comprising: activating a radio frequency transceiver and a sleep, energy detection channel, channel reception quality data link packet indication, clear channel assessment, send and receive data; a data link layer is responsible for data framing, frame detection, differential 4 and a media access control Jin, e.g. IEEE802 15. 4 standard data link layer is divided into the medium access layer MAC and logical. link control layer LLC, LLC MAC sublayer supports multiple standards, the MAC sublayer service used by the physical layer for data transmission between the apparatus frame, the LLC sublayer and the MAC sublayer of the base, the device provides a connection-oriented and a connectionless service; generating primarily responsible for routing network layer routing (e.g.: Zigbee) and its corresponding 3 each manufactured by a only a few (e.g., F looding十办i义、Gossiping 协议等)。 looding ten i do justice, Gossiping protocols, etc.).

映射处理装置52保存有目标传感器标识及其对应的接入网关IP地址映射表或相应的远端访问客户^/L的IP地址,通过4全索该映射表,处理装置能发现目标传感器节点所对应的接入网关或客户机的IP地址,作为传感器网络接口装置和IP网络处理装置之间的桥接装置,它向IP网络处理装置初始化一个端到端的IP 通信,这样,无论传感器网络与目标访问设备各自所采用的何种内部通信、路由才几制,IP网络可以将一个传感器网络中的传感器节点数据透明地传输给远端访问客户机、或另外一个传感器网络中的目标传感器节点。 Mapping processing means 52 save target sensor identification and the access gateway corresponding to the IP address mapping table or the corresponding remote access client ^ / L IP address, the whole cable 4 by the mapping table, the processing means can find the target sensor nodes IP address corresponding to the access gateway or client, as a bridge between the sensor means and the network interface device IP network processing means to the processing means for initializing an IP network end to end IP communication, so that, regardless of the sensor network to the target access equipment used by each internal communication which, only a few routing system, the IP network may be sensor node data transparently a sensor network to the remote access client, or another target sensor nodes of a sensor network.

如果目标传感器网络有大量的传感器节点,该映射表空间将变得十分庞大,为了快速查找和映射,可釆用一定的优化机制压缩索引空间,此外,结构ID的汇聚分配可用来完成分级路由。 If the target sensor network has a large number of sensor nodes, the mapping table space will become very large, in order to quickly find and map, can preclude the use of certain mechanisms to optimize compression index space, in addition, brought together ID assigned structure can be used to complete hierarchical routing.

IP网络接口装置53作为北向接口运行TCP/IP协议以将传感器数据包或应用数据封装成为IP数据包,并初始化IP数据包的端到端通信;或作为一个虚拟的传感器节点用于代表其所连接的所有传感器节点与其它传感器网络进行数据通信。 IP network interface device 53 as a sensor to the north or application data packets encapsulated into IP packets to the interface running TCP / IP protocol, and end communication initialization IP packets; or as a virtual sensor node used to represent its All sensor nodes connected in data communication with other sensor network.

IP网络接口装置可进一步采用IP隧道机制来传送传感器数据包,例如常见的以第2层或第3层隧道协议为基础的隧道机制。 IP network interface device may further employ IP tunneling mechanisms to transmit the sensor data packet, such as a common mechanism for Layer 2 tunneling or layer 3 tunneling protocol basis. 底层物理接口上可扩展为支持任何网络通信接口类型,例如:符合IEEE802. 3 4支术标准的以太网网络接口、符合IEEE802. 11才支术标准的无线网络接口、或GPRS/CDMA等通信网络接口。 The underlying physical interface can be extended to support any type of network communication interface, such as: a wireless network interface to an Ethernet network interface complies with IEEE802 3 4 branched technique standardized in accordance with standard IEEE802 11 before performing the surgery, or GPRS / CDMA communication network such as interface.

尽管上述说明为本发明提供了一些实施例,并非用来限定本发明的保护范围,本技术领域的专业人员可以在不脱离本发明的范围和精神的前提下,对实施例进行各种修改,这种修改均属于本发明的范围内。 Although the above description provides some embodiments of the present invention and are not intended to limit the scope of the present invention, it may skilled in the art without departing from the scope and spirit of the present invention, various modifications of the embodiments, such modifications are within the scope of the present invention.

12 12

Claims (10)

1、一种传感器网络数据访问方法,所述传感器网络通过网关与IP网络系统相连接、以提供对传感器网络数据访问,其特征在于:a)、在网关中保存目标访问设备信息;b)、网关对来自所连接的传感器网络的传感器数据进行路由处理时,根据其目标节点信息查找目标访问设备信息;c)、根据所获得的目标访问设备信息对传感器数据进行IP数据封装并通过IP网络发送至目标访问设备。 A data access method of a sensor network, the sensor network connected to the IP network through a gateway system to provide data access to the sensor network, characterized by: a), the device information stored in the target access gateway; B), gateway sensor data from the sensor network connected to the routing process to find based on its destination node information of the target access device information; C), access to the device information of the sensor data encapsulated IP data according to the target obtained and transmitted through the IP network access to the target device. d)、目标访问设备对接收到的IP数据包进行解封装处理。 d), the target access device received IP packet decapsulation.
2、 如权利要求l所述的方法,其特征在于步骤a)中目标访问设备信息为第二传感器网络传感器节点及其对应的第二网关IP地址信息,步骤d)中第二网关进一步将所接收的传感器数据转发给第二传感器网络中的目标传感器节点。 2. A method according to claim l, characterized in that step a) target information for the second gateway device to access IP address information of the second sensor network nodes and the corresponding sensor, step d) The second gateway is further receiving sensor data forwarded to the target node of the second sensor in the sensor network.
3、 如权利要求l所述的方法,其特征在于步骤a)目标访问设备信息为访问客户机的IP地址信息。 3. The method according to claim l, characterized in that step a) the target IP address information access device to access a client.
4、 如权利要求1至3所述的方法,其特征在于所述步骤c) 中,网关进一步以特定隧道协议对IP数据包进行封装处理,步骤d)中,目标访问设备对所接收到的进行数据相应的解封装处理。 4, according to the method as claimed in claim 13, wherein said step c), the gateway further to a specific tunneling protocol IP packet encapsulation processing, step d), the target device to access received corresponding decapsulation of data.
5、 一种传感器网络系统,包括: 第一传感器网络,由若干传感器节点组成;第一网关,与所述第一传感器网络相连,对来自第一传感器网络的协议数据进行路由处理时,根据其目标节点信息查找其目标访问设备信息、并以目标访问设备信息对特定协议数据进行IP数据封装并提供给IP网络;IP网络系统,与所述第一网关相连,对其IP数据进行路由; 目标访问设备,与所述IP网络系统相连,对接收到的IP数据包进行解封装处理。 5. A sensor network system, comprising: a first sensor network, a plurality of sensor nodes; a first gateway, a first sensor connected to the network protocol data from the first sensor processing network routing, according to which information to find its destination node device to access the target information, and information of the target access device encapsulates the IP data to a particular protocol data and provided to the IP network; IP network system, the first gateway is connected, its IP routing transactions; target access device, and the IP network connected to the system, the received IP packet decapsulation.
6、 如权利要求5所述的传感器网络系统,其特征在于所述目标访问设备为通过第二网关与IP网络相连接的第二传感器网络传感器节点,所述第二网关进一步将所接收的传感器数据转发给第二传感器网络中的目标传感器节点。 6, a sensor network system of claim 5, wherein said second gateway is further received by the sensor, characterized in that the target access network apparatus of the second sensor is connected to the sensor node via a second gateway to the IP network, forwarded to the target data of the second sensor node in the sensor network.
7、 如权利要求5所述的传感器网络系统,其特征在于所述目标访问设备为访问客户机。 7, a sensor network system as claimed in claim 5, wherein said target access device to the access client.
8、 如权利要求5至7所述的传感器网络系统,其特征在于所述第一网关进一步以特定隧道协议对IP数据进行封装,所述目标访问设备对来自IP网络系统的IP数据包进一步进行相应的反向解封装处理。 8, a sensor network system as claimed in claim 5 to claim 7, wherein said first gateway is further specific tunneling protocol to encapsulate IP data, said target access device IP packets from the IP network system further corresponding reverse decapsulation.
9、 一种支持对传感器网络数据访问的网关,其特征在于包括:传感器网络接口装置:接收来自传感器网络的传感器节点特定协议数据并进行相应路由处理;映射处理装置:用于保存目标访问设备信息、并根据所述传感器节点协议数据的目标节点信息获得所述目标访问设备信息;IP网络接口装置:以所获得的目标访问设备信息对所述特定协议数据进行IP数据封装并发送至所连接的IP网络。 9. A sensor network gateway support data access, comprising: a sensor network interface device: receiving from a sensor node of the sensor network specific routing protocol data and performs corresponding processing; mapping processing means: for storing information of a target access device and obtaining the target device information according to the target access node information to the sensor nodes of the protocol data; IP network interface device: the device accessing the target information is obtained for the particular encapsulated IP data and transmits the data to the protocol attached IP network.
10、 如权利要求9所述的网关,其特征在于所述IP网络接口装置进一步以特定隧道协议对IP数据进行封装处理。 10. The gateway as claimed in claim 9, wherein said network interface device further IP tunnel to a particular IP protocol processing on the data encapsulation.
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