CN103561079A - Wireless sensor network data interaction method based on XMPP - Google Patents
Wireless sensor network data interaction method based on XMPP Download PDFInfo
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Abstract
The invention discloses a wireless sensor network data interaction method based on an XMPP. The method comprises the steps that when the source client-side of a wireless sensor network receives an operation request instruction of operating a target client-side, the source client-side of the wireless sensor network generates a corresponding operation request data package; the source client-side of the wireless sensor network sends the generated operation request data package to the target client-side, and waits for the response of the target client-side; when the target client-side receives the operation request data package sent by the source client-side of the wireless sensor network, a corresponding response data package is generated, and is transmitted to the execution mechanism of the target client-side to be executed. The problem of the compatibility and intercommunity of the application protocols of the wireless sensor network can be solved, and the large-scale deployment and development of the wireless sensor network are facilitated.
Description
Technical field
The invention belongs to industrial wireless sensor network technical field, be specifically related to the XMPP data interactive method in a kind of wireless sensor network (Wireless Sensor Networks is called for short WSN).
Background technology
After technique of internet, WSN technology has become 21 century affects one of of paramount importance IT hot spot technology of the mankind, and its application also becomes the focus that the mankind pay close attention to, and is widely used in each application.Yet WSN also exists many problems, as the standards system of WSN, also improve not to the utmost and the problems such as the mutual disunity of data format of each application, caused the large scale deployment of WSN and application to become a great problem.
XMPP(scalable message and presentation protocol) as a kind of instant messages transmission specification based on XML language, there is the features such as open good, real-time and easy expansion, be widely used in the Internet, extended to WSN, can be solved in WSN incompatible between each application protocol and the mutual skimble-scamble problem of data format.
Yet existing XMPP mainly formulates towards instant messaging, mainly in the application of chat system, amusement and Email etc., framework is comparatively complicated; And WSN is mainly for the application of converging data, distributing data and network management etc., framework is more single, therefore, directly existing XMPP protocol application is also existed to some problems in WSN.
In order to cater to the requirement of WSN large scale deployment and development, proposing a kind of special instant message transmission method for WSN is necessary, instant message transmission method > > (Pei Wenjiang as mono-kind of < < based on XMPP agreement, Wang Xiaoshu, Zhang Shuqiang, king opens, Sun Qingqing, Zhang Yifeng, Yang Yang, Zhan Jin lion, is big, Zhu Guanghui, Miao Ruihua, Shen Yanzhen. a kind of instant message transmission method [P] based on XMPP agreement. Chinese patent: 201210087194.4) pointed in literary composition.At present, for the instant message transmission method of WSN also seldom, almost do not have.As above-mentioned patent, only described the transfer of data between a kind of instant message of realizing enterprises and enterprise outside, do not proposed a kind of specially for the instant message transmission method of WSN.
The present invention is directed to above shortcoming, the main body of considering WSN is data, the main body of considering WSN is data, demand and feature from WSN, XMPP agreement is customized and optimized, the lightweight XMPP agreement of a Wireless Sensor Networks of design, utilize Properties of Objects, design has the XMPP data interaction form of reading and writing, execution, issue and function of reporting, XMPP data interactive method based on WSN has been proposed, object is to solve the skimble-scamble problem of each application data format of WSN, to promote WSN large scale deployment and development.
Summary of the invention
For above deficiency of the prior art, the object of the present invention is to provide a kind of data interactive method that can solve the wireless sensor network based on XMPP agreement incompatible between each application of WSN.Technical scheme of the present invention is as follows: a kind of data interactive method of the wireless sensor network based on XMPP agreement, and it comprises the following steps:
101, when the source of wireless sensor network client is received read request instruction or the write request instruction that destination client is operated or is carried out request instruction, the source client of wireless sensor network generates corresponding read request director data bag or write request director data bag or carries out request instruction packet, and jumps to step 102;
When the source of wireless sensor network client is received the issue request instruction that destination client is operated or reported request instruction, the source client of wireless sensor network generates corresponding issue request instruction packet and report request instruction packet; And jump to step 103;
102, the source client of wireless sensor network is by the read request director data bag generating in step 101 or write request director data bag or carry out request instruction Packet Generation to destination client, and waits for the response of destination client; Read request director data bag or the write request director data bag that destination client sends in the source client of receiving from wireless sensor network or generate corresponding response data packet while carrying out request instruction packet, and the actuator that is transmitted to this destination client carries out, complete read operation or write operation or executable operations;
103, the source client of wireless sensor network, by the issue request instruction packet generating in step 101 or report request instruction Packet Generation to destination client, completes issue operation or report operation.
Further, described XMPP agreement comprises <object/>, <request/>, <response/>, <error/>, <command/>, <method/>, <attribute/>, <inargument/> and <outargument/> element.
Advantage of the present invention and beneficial effect are as follows:
The data interactive method of the wireless sensor network based on XMPP agreement of the present invention is considered the feature such as incompatible between high real-time, low-power consumption and its existing each application protocol of WSN, that employing has is real-time, flexibility good and the easy XMPP technology of expansion, design has the XMPP data interaction form of reading and writing, execution, issue and function of reporting, to unify the data interaction form of each application of WSN.Therefore XMPP data interactive method of the present invention, had both met the application demand of WSN, also contributed to large scale deployment and the development of WSN simultaneously.
Accompanying drawing explanation
Fig. 1 is preferred embodiment of the present invention data object application scenarios figure;
Fig. 2 reads to serve implementation procedure flow chart;
Fig. 3 writes service implementation procedure flow chart;
Fig. 4 carries out service implementation procedure flow chart;
Fig. 5 issuing service implementation procedure flow chart;
Fig. 6 reports service implementation procedure flow chart.
Embodiment
The invention will be further elaborated below in conjunction with accompanying drawing, to provide the embodiment of an indefiniteness.But should be appreciated that, these descriptions are exemplary, and do not really want to limit the scope of the invention.In addition, in the following description, omitted the description to known features and technology, to avoid unnecessarily obscuring concept of the present invention.
In the data interactive method of the wireless sensor network based on XMPP agreement proposed by the invention, each device node all should have a data object as shown in Figure 1.Due to object encapsulation attribute and method, attribute is the relevant parameter in device node, method be access these attributes interface function.The method that the data object of the present invention's design is supported is as shown in table 1, this table mainly comprises five kinds of publicly-owned methods such as reading and writing, execution, issue and report, be that data object provides five kinds of data, services such as reading and writing, execution, issue and report, method for the private method in manner of execution for increasing in the future, the present invention does not define it temporarily.When a device node wants another device node to carry out corresponding operation, the mode that the data, services that can provide by usage data object operates data object realizes.
Table 1
As described in Table 1, the data object in device node provides reading and writing, execution, issue and report service, for these several data, services, will introduce respectively it below.
(1) service of reading
The service that the service of reading provides for data object in equipment, represents that visitor can obtain the property value in data object by " reading " this method.The service of reading belongs to passive receive command service, and, in WSN, the attribute of the data object in equipment is to realize its read operation by passive mode.The service of reading comprises that read request responds with reading, and its identifier is respectively request and response/error.
Request: be read request identifier, represent that visitor goes for the property value of data object in equipment and the request of sending.
Response: for reading response identifier, represent that visitor has successfully read the property value of data object in equipment.
Error: for reading response identifier, while representing the property value of the data object of visitor in fetch equipment, mistake has occurred.
(2) write service
Write the service that service provides for data object in equipment, represent that operator can write corresponding value in the attribute of data object by " writing " this method, using as its property value.The service of writing is the same with the service of reading, and belongs to passive receive command service, and, in WSN, the attribute of the data object in equipment is to realize its write operation by passive mode.The service of writing comprises write request and write response, and its identifier is respectively request and response/error.
Request: be write request identifier, represent that operator wants to write corresponding value in the attribute of data object.
Response: be write response identifier, represent that operator has successfully write corresponding value in the attribute of data object.
Error: be write response identifier, represent that operator, writing corresponding value in the attribute of data object time, mistake has occurred.
(3) carry out service
Carry out the service that service provides for data object in equipment, represent that executor can carry out certain private method to the attribute in data object, as operations such as establishment or deletions.The service of carrying out is with the foregoing service of reading and write and serve equally, belongs to passive receive command service, and, in WSN, in equipment, the attribute of data object is to realize its executable operations by passive mode.
(4) issuing service
The service that issuing service provides for data object in equipment, what one in expression communication can be received according to it issues from the ordered information of miscellaneous equipment the method that relevant information is used.
Contrary with execution service with above-mentioned reading and writing, the defined Publish-subscribe service of data, services agreement belongs to and initiatively sends command service, in WSN, in equipment, the attribute of data object is to be issued and subscribed to by mode initiatively, as when sensor node need to obtain relevant information to server end, to server, initiatively send subscription information, and server is after receiving these subscription information, can, within certain time period, initiatively to one or more sensor nodes of having subscribed to, issue its ordered information.Publish-subscribe is served this method and is mainly used in the occasions such as periodic Data Update.
(5) report service
The service that report service provides for data object in equipment, the method that the acyclic information transmission that indication equipment is initiatively initiated to the opposing party who communicates by letter when emergency case, unusual condition or other situation is used.
The same with Publish-subscribe service, report service belongs to and initiatively sends command service.Report service class is similar to " pushing away " mechanism.For example, when the data that collect when transducer surpass the upper lower limit value setting in advance, sensor node pushes warning class data message to gateway.This kind of method of servicing is mainly used in the occasions such as acyclic Data Update.
For application scenarios corresponding to data object, as shown in Figure 1.In Fig. 1, WSN represents WSN, and data flow 1 represents can read and write and executable operations between sensor node; Data flow 2 represents that sensor node can read and write with long-range device node and executable operations, and the data of data flow 1 and data flow 2 transmission are iq class message; Data flow 3 represents that long-range device node can be to the sensor node issue related news in WSN, and the data of its transmission are presence class message.One of them sensor node in data flow 4 expression WSN can be reported its relevant information to another sensor node; Data flow 5 represents that long-range device node can report its relevant information to the sensor node in WSN; Sensor node in data flow 6 expression WSN can be reported its relevant information to long-range device node, and the data of data flow 4, data flow 5 and data flow 6 transmission are message class message; For aforesaid several data, services, will respectively it be described in detail below.
For the XMPP data interactive method based on WSN, need the implementation method of each data, services in its data interaction grammer of design and data object.Below will describe this two parts content in detail.
1. data interaction grammer design
In WSN, communicating by letter between object and another object, usually realizes by operating a <object/> unit.The present invention define its name space for '
http:// jabber.org/protocol/wsn-object '.The <object/> element that this name space limits should save as <message/>, <presence/> saves and the one-level daughter element of <iq/> joint.<object/> element must comprise " from " attribute and " to " attribute, represents respectively source object and object object, and its basic syntax is as follows.
(1) grammer sending request
(2) reply the grammer of response
Or
As mentioned above, except the more defined elements of XMPP core protocol, the present invention has also defined <object/>, <request/>, <response/>, <error/>, <command/>, <method/>, <attribute/>, the element such as <inargument/> and <outargument/>, if necessary, in the future can also increase more element.
2. the implementation method of each data, services design in data object
When the XMPP data interactive method designing based on wireless sensor network, need consider the feature of XMPP and WSN.Because XMPP agreement flows based on XML, and in XML stream transmission be a little XML joints, as <message/> joint, <presence/> joint and <iq/> joint, therefore, when XMPP is applied to WSN, the communication data between equipment wherein also flows based on XML.Given this, for the realization of data, services in defined WSN data object in the present invention, can save to realize by expansion <message/> joint, <presence/> joint and <iq/>.
In XMPP core protocol, 3 kinds of basic semantics have been defined altogether, i.e. message semantics <message/>, the semantic <presence/> of presence information and the semantic <iq/> of IQ.Wherein, <message/> joint type can be counted as a kind of " pushing away " mechanism and be used for an entity PUSH message to another entity, is similar to the Source/sink communication pattern in WSN technical standard; <presence/> joint type can be counted as a basic broadcast or " Publish-subscribe " mechanism, the information that receives certain entity of having subscribed to for a plurality of entities, is similar to the Publish-subscribe communication pattern in WSN technical standard; And <iq/> joint type is one and asks and make the request-response mechanism of replying for an entity can be made to another entity, be similar to the client-server communication pattern in WSN technical standard.The implementation method of every kind of data, services will specifically be introduced below.
(1) read service implementing method design
As mentioned above, the service of reading comprises read request and reads respond services.XMPP regulation, an entity is when receiving a read request, must reply one and read response, what this process was used is request-response mechanism, and the <iq/> that therefore realization of the service of reading can have request-response mechanism by expansion saves to realize.Regulation herein, the iq that the entity of an iq request that receives " request " type must be replied " response " or " error " type replys, and must comprise type and id attribute in <iq/> joint.It is as follows that the present invention designs its specific implementation form.
A) read request form
In read request form, iq represents that this message is <iq/> joint kind of message; Id=' get-id ' represents a kind of interbehavior; Type=' get ' represents that this <iq/> joint goes for a certain property value; From=' source address ' represents to send the entity source address of read request; To=' destination address ' represents to receive the entity destination address of read request; These are all attributes of <iq/> joint above.<object/> is the one-level daughter element of <iq/> joint, for what expand, represents that the daughter element of <iq/> joint is an object herein; Xmlns='
http:// jabber.org/protocol/wsn-object' be the name space of <object/> element; From=' source object ' represents to send the source object of read request; To=' targetobject ' represents to receive the object object of read request information; <request/> is the daughter element of <object/>, expression source object will be carried out solicit operation, it must comprise " var " attribute, the publicly-owned method of carrying out to indicate, as var=' read ' herein represents that source object will carry out read operation; <attribute/> is the daughter element of <request/>, and it must comprise " var " attribute, with indicate to read object properties.
B) read response format
Read to respond to be divided into and read response success and read the wrong two kinds of situations of response.For reading response success, it is as follows that the present invention designs its form:
In reading the form of response success, type=' result ' represents that this <iq/> joint is response results, and response success; From=' source address ' represents the entity source address of response read request; To=' destination address ' represents the entity destination address of response read request, the physical address of initiating read request; <response/> is the daughter element of <object/>, and indicated object will carry out operation response, and the success of response read request; <attribute/> is the daughter element of <response/>, it must comprise " var " attribute, with those object properties that represent to be responded, it is lower can comprise read property value, as attribute value is herein the property value of being read.
For reading to respond mistake, it is as follows that the present invention designs its form:
Reading to respond in wrong form, type=' error ' represents that this <iq/> joint is response results, and mistake has occurred in response process; <error/> is the daughter element of <object/>, indicated object will carry out operation response, and response mistake, it must comprise a type attribute, to represent type of error, as type=' error-type ', the desirable cancel(of the value of error-type retry not wherein), continue(proceeds), modify(changes retry after data), auth(provides retry after certificate) or wait(wait for after retry).In addition, <error/> element also must comprise a daughter element, i.e. defined-condition herein, and this daughter element must meet ' urn:ietf:params:xml:ns:xmpp-stanzas ' name space, its value is referring to the Defined Conditions of the 8.3.3 joint of the RFC6120 in IETF.Wherein, read in response format and part identical in read request form, do not repeat them here, referring to the description of read request form.Between two entities, realize the communication process of the service of reading as shown in Figure 2.
(2) write service implementing method design
Write services package containing write request service and write response service, its implementation with read service class seemingly, be also to utilize the mode of expansion <iq/> joint to realize.It is as follows that the present invention designs its specific implementation form.
A) write request form
In write request form, type=' set ' represents that this <iq/> joint wants to arrange or revise a certain property value; From=' source address ' represents to send the entity source address of write request; To=' destination address ' represents to receive the entity destination address of write request; These are all attributes of <iq/> joint above.<object/> is the one-level daughter element of <iq/> joint, for what expand, represents that the daughter element of <iq/> joint is an object herein; <request/> is the daughter element of <object/>, expression source object will be carried out solicit operation, it must comprise " var " attribute, the publicly-owned method of carrying out to indicate, as var=' write ' herein represents that source object will carry out write operation; <attribute/> is the daughter element of <request/>, it must comprise " var " attribute, as var=' object attribute ', to indicate, which attribute of object is carried out to write operation, under it, should comprise write property value, as attribute value herein.
B) write response form
With read to respond similar, write response is also divided into write response success and two kinds of situations of write response mistake.For write response success, it is as follows that the present invention designs its form:
In the successful form of write response, type=' result ' represents that this <iq/> joint is response results, and response success; From=' source address ' represents to send the entity source address of write response; To=' destination address ' represents to receive the entity destination address of write response; <response/> is the daughter element of <object/>, indicated object will carry out operation response, and response write operation success, herein, due to the content that does not have to return, so <response/> is empty.
For the situation of write response mistake, it is as follows that the present invention designs its form:
In the form of write response mistake, type=' error ' represents that this <iq/> joint is response results, and mistake has occurred in response process; <error/> is the daughter element of <object/>, indicated object will carry out operation response, and response makes mistakes, it must comprise a type attribute, as type=' error-type ', wherein the description of error-type can be referring to the description of reading to respond error-type in mistake.Between two entities, realize the communication process of the service of writing as shown in Figure 3.
(3) carry out service implementing method design
Because the service of carrying out is with the service of reading with write and serve equally, belong to passive receive command service, be all first to ask to respond again.Therefore the <iq/> that, the present invention has request-response mechanism by expansion saves it is realized.The specific implementation form of carrying out service is as follows.
A) carry out request form
In carrying out request form, id=' execute-id ' represents a kind of interbehavior; Type=' X ' represents the method for carrying out, the desirable set of X or get; From=' source address ' represents to initiate the entity source address of executable operations; To=' destination address ' represents to accept the entity destination address of executable operations; <request/> is the daughter element of <object/>, represent that source object will carry out solicit operation, it must comprise " var " attribute, the publicly-owned method of carrying out to indicate, as var=' execute ' herein represents that source object will carry out executable operations; <method/> is the daughter element of <request/>, it must comprise " var " attribute, the private method of carrying out to indicate, this private method increases while needing for future again, undefined temporarily herein; <inargument/> is the daughter element of <method/>, it must comprise " var " attribute, as var=' argument_name ', to indicate, which parameter is carried out to executable operations, as required, its lower particular content that can comprise execution, as inargument value herein, also can not comprise corresponding content.
B) carry out response format
When the source object of initiation executable operations is carried out a certain operation to the attribute of object object, source object need be known the result of carrying out this operation, so that follow-up operation (as carried out a certain operation successfully, does not need to continue to send fill order; If carry out a certain operation failure, need again to initiate fill order).Carry out response and can be divided into response success and the wrong two kinds of situations carried out.The form of the execution response success of the present invention's design is as follows:
For carrying out response, wrong situation has occurred, its format design is as follows:
Between two entities, realize the communication process of the service of execution as shown in Figure 4.
(4) issuing service implementation method design
For the defined issuing service of the present invention, based on Publish-subscribe mechanism, therefore, the <presence/> that the present invention has Publish-subscribe mechanism by expansion saves to realize.And other two kinds of joints, as <message/>: push mechanism and <iq/>: request-respond mechanism, is all not suitable for the realization of issuing service.According to XMPP related definition, the issue form of the present invention's design is as follows:
In Publish-subscribe form, presence represents that this message is <presence/> joint kind of message; From=' source address ' represents issue physical address, to=' destinationaddress ' represents to receive the physical address releasing news, when the information of issue adopt be broadcast mode time, should be without to attribute in <presence/> joint; From=' source object ' represents the source object giving out information, and to=' target object ' represents to receive the object object giving out information; <command/> is the daughter element of <object/>, must comprise " var " attribute, and as var=' publish ', expression source object will be issued operation; <attribute/> is the daughter element of <command/>, must comprise " var " attribute, which as var=' object attribute ', indicate attribute of object to issue; Under it, need to comprise the concrete content that gives out information, as publish information is herein the particular content of issue.Between two entities, realize the communication process of Publish-subscribe service as shown in Figure 5.
(5) report service implementing method design
The defined report service of the present invention is based on " pushing away " mechanism, the <message/> that can use expansion to have " pushing away " mechanism realizes, and other two kinds of joints, as <presence/>: Publish-subscribe mechanism and <iq/>: the request-mechanism of response is all not suitable for the realization of report service.
The designed reporting format of the present invention is as follows:
In reporting format, message represents that this message is <message/> joint kind of message; From=' source address ' represents to initiate the physical address of report; To=' destination address ' represents to receive the destination entity address of report information; Type=' X ' represents the residing environmental form of communicating pair, " X " desirable chat, groupchat, error or normal; <command/> is the daughter element of <object/>, represent the operation that source object will be carried out, it must comprise " var " attribute, the publicly-owned method of carrying out to indicate, as var=' report ' expression source object herein will be reported operation; <attribute/> is the daughter element of <command/>, and it must comprise " var " attribute, with the object properties of the report of indicating; Value is the specifying information of report.Between two entities, realize the communication process of report service as shown in Figure 6.
Data interactive method of the present invention like this can meet on the basis of WSN application demand, and the unified data interaction form without each application of WSN, to solve compatibility and the interoperability of each application protocol of WSN, contributes to large scale deployment and the development of WSN.
These embodiment are interpreted as only for the present invention is described, is not used in and limits the scope of the invention above.After having read the content of record of the present invention, technical staff can make various changes or modifications the present invention, and these equivalences change and modification falls into the XMPP data interactive method claim limited range that the present invention is based on wireless sensor network equally.
Claims (2)
1. a data interactive method for the wireless sensor network based on XMPP agreement, is characterized in that comprising the following steps:
101, when the source of wireless sensor network client is received read request instruction or the write request instruction that destination client is operated or is carried out request instruction, the source client of wireless sensor network generates corresponding read request director data bag or write request director data bag or carries out request instruction packet, and jumps to step 102;
When the source of wireless sensor network client is received the issue request instruction that destination client is operated or reported request instruction, the source client of wireless sensor network generates corresponding issue request instruction packet and report request instruction packet; And jump to step 103;
102, the source client of wireless sensor network is by the read request director data bag generating in step 101 or write request director data bag or carry out request instruction Packet Generation to destination client, and waits for the response of destination client; Read request director data bag or the write request director data bag that destination client sends in the source client of receiving from wireless sensor network or generate corresponding response data packet while carrying out request instruction packet, and the actuator that is transmitted to this destination client carries out, complete read operation or write operation or executable operations;
103, the source client of wireless sensor network, by the issue request instruction packet generating in step 101 or report request instruction Packet Generation to destination client, completes issue operation or report operation.
2. the XMPP data interactive method based on wireless sensor network according to claim 1, it is characterized in that: described XMPP agreement comprises <object/>, <request/>, <response/>, <error/>, <command/>, <method/>, <attribute/>, <inargument/> and <outargument/> element.
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| CN107835150A (en) * | 2017-09-15 | 2018-03-23 | 广州唯品会研究院有限公司 | A kind of full media customer service dispatching method and system |
| CN107835150B (en) * | 2017-09-15 | 2021-06-04 | 唯品会(广州)软件有限公司 | Full-media customer service scheduling method and system |
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