CN102438333A - Universal wireless sensor network system and information processing method thereof - Google Patents
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Abstract
The invention discloses a universal wireless sensor network system and an information processing method thereof, belonging to the technical field of sensing networks and the Internet of things. The universal wireless sensor network system comprises one or more sensor subnetworks, an information converging network and a sensing access network, wherein the one or more sensor subnetworks consist of sensor nodes; the information converging network consists of information converging nodes; each information converging node is used for accessing one or more same or different sensor nodes so as to obtain the sensing information of the sensor nodes; the sensing access network consists of access converging nodes; and each access converging node is used for accessing one or more information converging nodes so as to obtain the information of the information converging nodes. According to the invention, the unification of networking modes is realized so as to achieve the effect of compatibility of multiple sensor networks; and the system and the method can be applied to any one or more sensor network environments, and are especially suitable for a comprehensive application context of a large-scale isomerism sensing network similar to the Internet of things.
Description
Technical field
The present invention relates to wireless sensor network and technology of Internet of things field, relate in particular to a kind of general wireless sensor network system and information processing method thereof.
Background technology
Wireless sensor network (WSN) relates to multiple wireless technology, for example Zigbee, Wi-Fi, bluetooth, UWB etc.The network architecture that these wireless technologys are constituted when networking all only to technical characterstic design separately, is not considered each other compatibility and collaborative work, therefore has following shortcoming:
The first, integral body presents isomerism
The isomerism of wireless sensor network is mainly reflected in multiple communication system and two aspects of sensing communication requirement.Wherein, the communication system isomerism shows the wireless communication standard of transfer of data employing and the diversity of agreement; The isomerism of sensing communication requirement is mainly reflected in dissimilar heat transfer agents and has the transmission demand that has nothing in common with each other.For the different monitoring object, sensor network is except variant on energy consumption, and also is not quite similar at aspects such as sensing frequency, bandwidth demand, propagation delay time restrictions.The existing framework of various wireless technologys did not all have versatility more than this isomerism of wireless sensor network had determined, can only under special scenes, select specific framework to adapt to.
The second, the networking mode disunity
Various sensor networkings all present demands of different at scale, topological structure, message transmission rate, suitable aspects such as application, thereby the networking mode disunity.Networking mode that these are different and networking demand make the integrated application between the wireless sensor network under each communication system run into obstacle.
The 3rd, data can't united and coordinating be handled
The application that the existing network architecture is supported is single; Be difficult to share between the data of each wireless senser subnet; Can't form effective data fusion and comprehensive associated treatment mechanism; Can't realize the data between the different radio transducer subnet are carried out integrated treatment, converged the purpose of fusion, can't reach Internet of Things and use desired integrated information and share the requirement with associated treatment.
Along with the progressively formation of Internet of Things, how the big quantity sensor to Internet of Things possibly used makes up general wireless sensor network, makes the transducer of multiple technologies can carry out unified management and effective intercommunication, becomes the problem that needs solution.
Summary of the invention
Technical problem to be solved by this invention is, a kind of general wireless sensor network system and information processing method thereof are provided, during the wireless senser networking that is used to solve present multiple technologies each other can't be compatible and the problem of collaborative work.
In order to address the above problem, the present invention proposes a kind of general wireless sensor network system, comprising:
One or more transducer subnets of forming by sensor node;
The information of being made up of the information aggregation node converges net, and wherein, said each information aggregation node is used to insert one or more identical or different sensor nodes, obtains the heat transfer agent of sensor node;
By the sensing Access Network that the cut-in convergent node is formed, wherein, each cut-in convergent node is used to insert one or more information aggregation nodes, obtains the information of information aggregation node.
Said cut-in convergent node is the SINK node or moves access node.
The sensor node that said information aggregation node is inserted is the sensor node that belongs to same transducer subnet, or belongs to the sensor node of different sensors subnet.
Said information aggregation node has reconfigurable multichannel structure, and wherein, the type and the quantity of the wireless senser subnet of required access in channel type and quantity and the practical application are complementary.
Said information aggregation node comprises the information convergence-level, be used for to the heat transfer agent of each transducer subnet of inserting carry out that normalization is handled and to heat transfer agent compile, fusion, stores processor.
Said information convergence-level comprises one or more service points, and said service point is used for the storage after will merging, and said service point is result and the distributed storage strategy that carries out feature extraction according to information, and the data after merging are stored.
Said information aggregation node has the multi-protocol stack structure, and wherein, the transducer subnet quantity that inserts in the quantity of protocol stack and the practical application is complementary.
Said information aggregation node has reconfigurable middleware framework, the application module of corresponding one or more practical applications of each middleware.
Said system also comprises the application gateway of sensing Access Network, and said application gateway is connected with the Internet or private network network, is used to realize the externally interconnected of sensing Access Network.
Said information aggregation node, comprise be used for to the heat transfer agent that inserts compile, the information convergence-level of fusion, stores processor, said information convergence-level comprises and is used for one or more service points that the data after merging are stored; Also comprise the service provision point that is used to connect upper layer application system and information convergence-level in the said application gateway, said service provision point is that application system is sent order downwards and obtained the interface of needed data.
The present invention also provides a kind of information processing method of general wireless sensor network system, comprising:
One or more transducers in the transducer subnet are reported to the information aggregation node with the heat transfer agent of obtaining;
The information aggregation node that information converges net to the heat transfer agent that receives from sensor node converge, fusion, stores processor;
The cut-in convergent node of sensing Access Network obtains the heat transfer agent data after the fusion according to service application from the information aggregation node, dispatches distribution.
Wherein, said information aggregation node has multichannel and multi-protocol stack structure, obtains said heat transfer agent from the sensor node of same transducer subnet or the sensor node of different sensors subnet.
Wherein, when said information aggregation node converges the heat transfer agent of sensor node, the heat transfer agent of same sensing net is converged, and/or information is converged according to COS.
Wherein, when said information aggregation node merged the heat transfer agent of sensor node, the heat transfer agent after will converging was earlier carried out normalization and is handled, again to the data after the normalization according to same transducer subnet or merge according to COS.
Wherein, the cut-in convergent node of said sensing Access Network obtains from the information aggregation node according to the demand of service application and uses required data and dispatch; According to heat transfer agent type of data, characteristic parameter, these heat transfer agent data are distributed to corresponding application system.
General wireless sensor network system of the present invention and information processing method thereof; Compared with prior art; Realized the unification of networking mode; Reach the effect of compatible multiple sensors network, can under any one or more sensor network environment, use, especially be fit to the integrated application scene of the large scale scale heterogeneous sensing net of analog networking.Through to the converging of data, fusion, distributed storage, distribution scheduling, form the data information sharing platform, for multiple application system provides complete data, services.The present invention can make transfer of data combine with data fusion through rational data fusion strategy, has saved the energy consumption of whole network, has improved the application power of wireless sense network.
Description of drawings
Fig. 1 is a general purpose transducer network organizing configuration diagram;
Fig. 2 is the multi-to-multi access infrastructure sketch map of transducer subnet;
Fig. 3 is the self-organizing structures sketch map that information converges net;
Fig. 4 is the logical construction sketch map that information converges net;
Fig. 5 is a sensing access network architecture sketch map;
Fig. 6 is that information converges netting index according to process chart;
Fig. 7 is the multichannel structural representation of information aggregation node;
Fig. 8 is the multi-protocol stack sketch map of information aggregation node;
Fig. 9 is the restructural middleware sketch map of information aggregation node.
Embodiment
For making the object of the invention, technical scheme and advantage clearer, the present invention is done to specify further below in conjunction with accompanying drawing.
Have in the existing wireless sensor network technology that multiple communication system is incompatible, the problem of isolation application and defective; The present invention proposes the large scale scale heterogeneous WSN group-network construction of a kind of classification distributed type; Make the wireless sensor network of different communication system have normalized networking mode, realize the unified data fusion treatment.
As shown in Figure 1, a kind of general wireless sensor network system is made up of sensor node, information aggregation node and SINK node, has formed three grades of group-network constructions, wherein:
Form one or more transducer subnets by sensor node; One or more transducer subnets constitute third level network, and said transducer subnet can be made up of the transducer one or more of the same race that adopts same wireless technology, also can be made up of the one or more xenogenesis transducers that adopt the different radio technology.
Form one or more information by the information aggregation node and converge net, said each information aggregation node is used to insert one or more identical or different sensor nodes, obtains the heat transfer agent of sensor node; A plurality of information aggregation nodes constitute second level network, and the information aggregation node can converge net through the information that the self-organizing mode constitutes, and heat transfer agent is converged and handles.
Form the sensing Access Network by the cut-in convergent node, each cut-in convergent node is used to insert one or more information aggregation nodes, obtains the information of information aggregation node.Said cut-in convergent node is the SINK node or moves access node.A plurality of SINK nodes and/or access node constitute first order network.
As shown in Figure 2, in order to converge the heat transfer agent of transducer, can be transducer configuration information aggregation node nearby as required.For example, in a transducer subnet, can arrange a plurality of information aggregation nodes as required, each information aggregation node can insert one or more transducers.Sensor node converges heat transfer agent nearby, can effectively shorten the bang path length of heat transfer agent in subnet, reduces the energy consumption and the networking complexity of subnet.Overlap or approaching zone at the different sensors subnet, also can insert the different sensors of a plurality of transducer subnets for an information aggregation node configuration, promptly each aggregation node can insert a plurality of transducer subnets simultaneously, to realize succinct and networking easily.This just forms the framework of multi-to-multi between transducer subnet and aggregation node, this kind framework not only can be realized the expansion or the reduction of transducer subnet easily, increases the flexibility that the isomery plurality of subnets inserts, and also is convenient to implement large-scale sensor network.
At the information aggregation node shown in Fig. 1 and Fig. 2, be similar to the SINK node in the subnet that has wireless sensor network now, so just can reach the purpose that does not influence the original group net operation state of subnet.In having cluster structured transducer subnet, the information aggregation node can also be held a concurrent post a bunch first-class merit ability except serving as the role of subnet SINK node.Major part clusters in the algorithm, only supports a bunch of head in each bunch.If the number of sub-clustering internal information aggregation node is less than supported bunch of first number, then the information aggregation node in all bunches is all played the part of a bunch first-class merit ability.And when the number of information aggregation node more than sub-clustering support bunch first several the time, unnecessary information aggregation node is worked with the mode of similar " funnel ".Algorithm itself restriction if cluster does not allow the information aggregation node to hold a concurrent post a bunch first-class merit ability, then can only optimize network performance through reasonable Arrangement information aggregation node, and the information aggregation node should be arranged in from bunch first place and put near place usually, to reduce communication overhead.
As shown in Figure 3, partial information converges the core that net is this architecture design, realizes networking by a plurality of information aggregation nodes through the self-organizing mode.Because an information aggregation node need be responsible for the access of one or more sensor nodes, on group-network construction, the number of information aggregation node is far smaller than the sensor node number.Sensor network is a kind of and uses closely-related functional network; Be that with the difference of general networks heat transfer agent is not simple transmission, but exist simultaneously in transmission course that information converges, information fusion and the information process of in network, realizing aspects such as information stores and information inquiry.In traditional sensor network, these functional processing procedures are taken on by sensor node usually, and in large-scale network-estabilishing, functional information process information of can be transferred to converges on the net and realizes.
Information converges Netcom and crosses distributed network and realize logic functions such as the compiling of heat transfer agent, fusion, storage, business service.Its basic function is as shown in Figure 4, and as can be seen from Figure 4, the information convergence-level mainly contains following function:
The first, the networking platform.
Unified networking mode interconnects the heterogeneous sensor network of different communication system each other.This interconnection comprises two aspects: the one, and can allow the transducer subnet smoothly to insert; The 2nd, can realize the ad hoc networking between the aggregation node.
The second, information converges platform.
Heat transfer agent converges in the information convergence-level after the collection of transducer subnet.Information converges has two levels: one is based on converging of local sensing net information.The sensing node of same sensing network possibly insert different information aggregation nodes, so heat transfer agent can be passed through a plurality of information aggregation node entering information and converged net.This will once compile processing from the heat transfer agent of same sensing net with regard to needing the information convergence-level.The node that is used for storing accumulated information is called the heat transfer agent point, normally some node in the information aggregation node.Two be based on COS distributed information converge.The information convergence-level converges information identical or the related service type according to the COS of information again.
The 3rd, information fusion, storage platform.
The information convergence-level can be carried out Data Fusion according to the redundancy of information after heat transfer agent is converged.Fusion can be carried out according to the regionality of heat transfer agent, also can carry out according to COS.After the information aggregation node converges information and merges, then adopt the distributed storage policy store to converge on the service point of net, so that offer different application when needing in information.
The 4th, sensing business service platform
The information convergence-level is according to different application requirements, for the upper strata provides the information sharing service.A kind of heat transfer agent possibly offer multiple application system and use; A kind of application also possibly used the multiple heat transfer agent from different sensing subnets simultaneously.The information convergence-level extracts information from all aggregation nodes of storage and this order relevant information according to the requirement of upper layer application, submits the upper strata.Also possibly carry out fusion treatment once more in the process of submitting to data.
Information aggregation node in the general wireless sensor network system of the present invention; Need have stronger information processing capability; More power configuration; Bigger wireless communication distance and higher transmission rate, be used to constitute cover that each transducer subnet zone, information that disposal ability is strong are converged, transmission and information processed converge net.Make heat transfer agent to SINK node transmission or realize in the storing process, can be better realize real-time processing, fusion treatment or stores processor by the various application demands of information.Through the function of sensor node being simplified and being transferred on the information aggregation node; The renewal of general sensor network system, maintenance and reconstructed network etc. mainly concentrate on the aspect that information converges net; With the operation expense of simplifying network greatly; The complexity of reconstructed network and difficulty also will reduce greatly, and this is the advantage place of this common group planar network architecture.
To the characteristics of large-scale network-estabilishing, the cut-in convergent node in the network can be SINK node or mobile access node, can adopt many SINK node and mobile access point mode to realize networking.The SINK node can adopt wired mode to be connected with the information aggregation node under situation with good conditionsi, also can adopt wireless mode to be connected with a plurality of aggregation nodes; Can couple together mutually through cable network between the SINK node.Radio access node can be the base station of Cellular Networks, is connected with the information aggregation node through wireless mode.
General wireless sensor network system is when information converges, and the one or more transducers in the transducer subnet are reported to the information aggregation node with the heat transfer agent of obtaining; The information aggregation node that information converges net carries out the normalization processing to the heat transfer agent that receives from sensor node, and normalization data is carried out fusion treatment; The cut-in convergent node of sensing Access Network obtains the heat transfer agent after the fusion according to service application from the information aggregation node.Said information aggregation node has multichannel and multi-protocol stack structure, obtains said heat transfer agent from the sensor node of same transducer subnet or the sensor node of different sensors subnet; Said information aggregation node carries out fusion treatment according to service application to normalization data after heat transfer agent is carried out normalization.
As shown in Figure 5, consider general sensor network system both maybe through the Internet, also might be interconnected through other private network, for making the interconnected versatility that has, it is external interconnected to adopt the form of application gateway to realize.The application gateway of said general sensor network system externally provides the inner concrete networking technology details of abstract and reflection, shielding of the application model of sensor network, thereby reaches the interconnected effect with versatility.When, application complexity larger when sensor network and calculation process amount were higher, application gateway can adopt the autonomous device form to exist; Under the reverse situation, application gateway can merge with the SINK node or a plurality of SINK node constitutes the logic application gateway.
The process from the transducer acquisition of information to concrete service application of the present invention; Heat transfer agent arrives application system from the transducer subnet; Have the unified data handling process, this flow process can reduce: information gathering-converge-merge-store-dispatch-distribute and wait several stages, and as shown in Figure 6.
Can see that from flow chart shown in Figure 6 this data flow is different from information gathering under traditional sensing planar network architecture, converges, merges three simple procedures, the present invention has increased processing such as storage, scheduling, distribution fusion on this basis.Handle to each step below and be elaborated.
The first step: data acquisition.
Bear the collection to raw sensory information by each transducer subnet, each transducer sends the heat transfer agent of gathering to corresponding information aggregation node.
Second step: convergence.
After the transducer subnet collects data, data are delivered to information converge net.Because the node of same transducer subnet possibly insert different information aggregation nodes; Therefore these information aggregation nodes need to be pooled on some information aggregation nodes from the information of same transducer subnet again; At this moment; The information aggregation node of this sink information just is called " heat transfer agent point ", converges so the effect of heat transfer agent point is a same sensing net information with a plurality of information aggregation nodes.In addition, heat transfer agent point also can further compile information according to COS.
The 3rd step: data fusion and storage.
After the heat transfer agent point has converged raw sensory information, can raw sensory information be carried out preliminary fusion treatment according to various conditions (like zone, type of service), to reduce redundant information.Data after the fusion need be stored on the service point of information convergence-level, so that be committed to application system when needing again.Convergence-level need be carried out feature extraction and distributed storage strategy to information, and the storage after merging in suitable position, service point, is made things convenient for next step data dispatch distribution processor.
The 4th step: data dispatch and distribution.
Interface between upper layer application system and the information convergence-level is called service provision point.Service provision point is that application system is sent order downwards and obtained the interface of needed data.After the information convergence-level was received the command informations such as inquiry that application system sends, the information convergence-level was carried out rational management to canned data, from the service point, extracted the information that this querying command needs, and from service provision point information was delivered application system again.In this process, the quick organizational politics of data is extremely important, and the response speed of data, services and the data store strategy in a last step are closely related.No matter the data of target or the data of storage are arranged, finally all will deliver application system.
The data distribution mainly refers to for the information of initiatively delivering to application system.The not only corresponding application of a kind of information, the information convergence-level can be according to parameters such as type of info, characteristics, decision with this distribution of information to which application system.
Because the sensor network of existing employing different radio technology is incompatible each other, isolated each other; General wireless sensor network of the present invention has increased the information convergence-level that is made up of the information aggregation node for realizing the compatibility each other and the unified management of heterogeneous networks.The concrete realization of information aggregation node can be adopted diversified method, but no matter which kind of realizes all should having following several characteristics, the realization information of information aggregation node converge the flow process key point also should comprise following some:
First: have the multichannel interface structure
As shown in Figure 7, the information aggregation node adopts reconfigurable multichannel structure, is used to support the ability of multisensor subnet access flexibly, and wherein, the wireless senser subnetwork type and the quantity of required access in channel type and quantity and the practical application are complementary.Inner at the information aggregation node, can realize the information of each respective sensor subnet is carried out that normalization is handled and information compiled integrated treatment such as fusion through the integrated information convergence-level.
Owing to there is the multiple sensors subnet; The information type of each transducer subnet, flow, qos requirement are varied; The information aggregation node will be unified to describe to them; Will carry out normalization to information earlier and handle, according to normalized information, comprehensive convergence-level is carried out the data necessary fusion treatment to individual transducer subnet information again.Information is being carried out the normalization processing, and after suitably merging, just can evade the data differences that legacy network causes because of technological disparity, can carry out Unified Treatment.
Second: have the multi-protocol stack structure
For the existing transducer subnet of compatibility, for the information aggregation node, both need support and the communicating by letter of each transducer subnet, also need support the group-net communication between the aggregation node simultaneously, therefore should have multi-protocol stack.The wireless sensing subnet quantity that inserts in the quantity of protocol stack and the practical application is complementary.As shown in Figure 8, consider that from the versatility angle information aggregation node protocol stack should comprise the complete protocol stack of each transducer subnet.That is to say that Data Fusion is carried out on the application layer of each protocol stack.So just can guarantee better compatibility of aggregation node and autgmentability.
The the 3rd: have the strategy of converging
The information aggregation node possesses stronger information fusion disposal ability and high speed transmission abilities; Better basic condition can be provided for the functional processing of heat transfer agent; Can different fusion and transmission policys be provided respectively to real-time, demands such as appearance is slow, storage, accomplish the professional functional processing of multiple sensing on the large scale network.To multiple business on the large-scale sensor network, multiple processing demands and the characteristics of depositing; Compile the group-net communication model of fusion converging the multirouting transmission that to realize classifying, subregion on the net; The information aggregation node can be designed to the restructural middleware, and is as shown in Figure 9.
Heat transfer agent can be according to the difference of business classification, will be gradually in transmission course to separately pooling zone near.This is the group-net communication mode that a kind of multirouting is selected, and its objective is to make same line of business through compiling, and is more conducive to the efficient fusion and the classification and storage of information.Consider that the practical application scene is different, the mode classification of heat transfer agent, the fusion method of information also can be different, have versatility for making this group-network construction, can consider to adopt reconfigurable middleware framework to realize to information classification, fusion function module.As shown in Figure 9, according to the difference of using, can information classification, fusion function be reconstituted the functional module of using A, Application of B or using C.
Adopt general wireless sensor network system of the present invention and information processing method; Compared with prior art; Realized the unification of networking mode; Can reach the effect of compatible multiple sensors network, can under any one or more sensor network environment, use, especially be fit to the integrated application scene of the large scale scale heterogeneous sensing net of analog networking.The present invention can make transfer of data combine with data fusion, through the energy consumption that rational data fusion strategy has been saved whole network, has improved the application power of wireless sense network.
The above is merely embodiments of the invention, is not limited to the present invention, and for a person skilled in the art, the present invention can have various changes and variation.All within spirit of the present invention and principle, any modification of being done, be equal to replacement, improvement etc., all should be included within the claim scope of the present invention.
Claims (15)
1. general wireless sensor network system comprises:
One or more transducer subnets of forming by sensor node;
The information of being made up of the information aggregation node converges net, and wherein, said each information aggregation node is used to insert one or more identical or different sensor nodes, obtains the heat transfer agent of sensor node;
By the sensing Access Network that the cut-in convergent node is formed, wherein, each cut-in convergent node is used to insert one or more information aggregation nodes, obtains the information of information aggregation node.
2. the system of claim 1 is characterized in that,
Said cut-in convergent node is the SINK node or moves access node.
3. the system of claim 1 is characterized in that,
The sensor node that said information aggregation node is inserted is the sensor node that belongs to same transducer subnet, or belongs to the sensor node of different sensors subnet.
4. like claim 1 or 3 described systems, it is characterized in that,
Said information aggregation node has reconfigurable multichannel structure, and wherein, the type and the quantity of the wireless senser subnet of required access in channel type and quantity and the practical application are complementary.
5. like claim 1 or 3 described systems, it is characterized in that,
Said information aggregation node comprises the information convergence-level, be used for to the heat transfer agent of each transducer subnet of inserting carry out that normalization is handled and to heat transfer agent compile, fusion, stores processor.
6. system as claimed in claim 5 is characterized in that,
Said information convergence-level comprises one or more service points, and said service point is used for the storage after will merging, and said service point is result and the distributed storage strategy that carries out feature extraction according to information, and the data after merging are stored.
7. like claim 1 or 3 described systems, it is characterized in that,
Said information aggregation node has the multi-protocol stack structure, and wherein, the transducer subnet quantity that inserts in the quantity of protocol stack and the practical application is complementary.
8. like claim 1 or 3 described systems, it is characterized in that,
Said information aggregation node has reconfigurable middleware framework, the application module of corresponding one or more practical applications of each middleware.
9. like claim 1 or 3 described systems, it is characterized in that,
Said system also comprises the application gateway of sensing Access Network, and said application gateway is connected with the Internet or private network network, is used to realize the externally interconnected of sensing Access Network.
10. system as claimed in claim 9 is characterized in that,
Said information aggregation node, comprise be used for to the heat transfer agent that inserts compile, the information convergence-level of fusion, stores processor, said information convergence-level comprises and is used for one or more service points that the data after merging are stored;
Also comprise the service provision point that is used to connect upper layer application system and information convergence-level in the said application gateway, said service provision point is that application system is sent order downwards and obtained the interface of needed data.
11. the information processing method of a general wireless sensor network system comprises:
One or more transducers in the transducer subnet are reported to the information aggregation node with the heat transfer agent of obtaining;
The information aggregation node that information converges net to the heat transfer agent that receives from sensor node converge, fusion, stores processor;
The cut-in convergent node of sensing Access Network obtains the heat transfer agent data after the fusion according to service application from the information aggregation node, dispatches distribution.
12. information processing method as claimed in claim 11 is characterized in that,
Said information aggregation node has multichannel and multi-protocol stack structure, obtains said heat transfer agent from the sensor node of same transducer subnet or the sensor node of different sensors subnet.
13. information processing method as claimed in claim 11 is characterized in that,
When said information aggregation node converges the heat transfer agent of sensor node, the heat transfer agent of same sensing net is converged, and/or information is converged according to COS.
14. information processing method as claimed in claim 11 is characterized in that,
When said information aggregation node merged the heat transfer agent of sensor node, the heat transfer agent after will converging was earlier carried out normalization and is handled, again to the data after the normalization according to same transducer subnet or merge according to COS.
15. information processing method as claimed in claim 11 is characterized in that,
The cut-in convergent node of said sensing Access Network obtains the required data of application according to the demand of service application from the information aggregation node and dispatches; According to heat transfer agent type of data, characteristic parameter, these heat transfer agent data are distributed to corresponding application system.
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