KR20110039681A - Wireless sensor node control system and method for improving energy efficiency - Google Patents

Abstract

PURPOSE: A wireless sensor node control system and a method for improving energy efficiency are provided to simplify the power supply frequency and procedure to a wireless sensor node. CONSTITUTION: A control server(900) transfers set filtering conditions to a context awareness shim(130). If first sensing data can be transferred to the control server according to the filtering operation under the filtering conditions, the context awareness shim transfers the first sensing data to the control server. The transmission of the first sensing data to the control server is unnecessary, the context awareness does not transfer the first sensing data to the control server.

Description

Wireless sensor node control system and method for improving energy efficiency

The present invention relates to an energy efficiency improving technology, and more particularly, to increase the efficiency of energy consumption of a wireless sensor node. A wireless sensor for improving energy efficiency for improving energy efficiency for increasing the lifespan of a battery of a wireless sensor node. It relates to a node control system and a control method.

Recently, as the computing environment has developed into a ubiquitous computing environment, the development of ultra-small electronic system technology and low power digital devices has been accelerated. The wireless sensor network, which is widely used in such a small and low power technology, is a network composed of small wireless sensor nodes having sensing, processing, and wireless communication capabilities. In general, hundreds or thousands of wireless sensor nodes and base stations are arranged in a sensor field requiring specific information. Wireless sensor nodes collect the surrounding information and deliver it to the base node, and the base node connects the collected data with the existing communication infrastructure (Infra) such as the Internet so that the user can access it. In a ubiquitous computing environment, wireless sensor networks with this capability are expected to be applied as a technology for various applications. Typical applications include tracking pollutants in hazardous areas, enemy surveillance for military purposes, and natural ecosystems. Environmental monitoring, home application or traffic, buildings and bridges. Since devices used in such ubiquitous computing environment usually have very limited computing resources, the wireless sensor nodes of the wireless sensor network are increasingly miniaturized and lightweight.

On the other hand, due to the recent development of wireless communication and microelectronics technology, it is possible to network between low-cost, miniature sensors. The wireless sensor network is ubiquitous because it has a wide range of applications such as environmental control in intelligent buildings, automatic control of production processes, warehouse logistics management, goods / information management in hospitals, remote sensing of patient status, intelligent transportation systems, and telematics. Active research is being conducted at the core of the network.

The MIT Institute of Microsystems is also working on micro adaptive multi-domain power aware sensors (AMPS), an adaptive sensor network platform for minimizing power consumption. Such research on wireless sensor network can be divided into physical layer, data link layer, network layer, transmission layer, application layer, etc. like existing wireless communication, but high density characteristics, limited power source, and extreme propagation of wireless sensor network New technologies are being developed considering the environment.

In the era of ubiquitous computing, wireless sensor network technology is very important for situational awareness of physical spaces. The advent of wireless sensor network technology is due to the development of low power, small size and ultra low cost computing devices. Wireless sensor nodes in a wireless sensor network are characterized by a lack of memory resources, low power wireless communication, and various types of sensors. The most important feature of the wireless sensor network is that wireless sensor nodes are inexpensive, and it is more efficient to replace them with other nodes than replace the battery, so the energy efficiency of the nodes is very important.

Wireless sensor nodes are composed of a sensing part, a central processing unit (CPU) part, a radio frequency (RF) part, and a memory part of a sensor. The most energy-consuming field is a communication module, a part related to transmitting and receiving data. to be. That is, the core of the wireless sensor network technology is an efficient wireless communication networking technology.

Miniaturization, intelligence, and wireless are the technology development trends that follow the demands of the sensor market. Intelligence is evolving into a smart sensor that greatly improves wireless sensor functionality by combining with computer technology. Miniaturization is being improved with recent advances in nanotechnology, in particular, MEMS (Micro Electro Mechanical System) technology. MEMS here refers to integrated circuit components and systems that combine electrical components with mechanical components.

The wireless sensor network consists of sensor nodes and a data collection device. The data collection device has better computing performance and sufficient energy resources than a wireless sensor node. The role of the wireless sensor nodes senses through the sensors and communicates data with other wireless sensor nodes. In other words, the wireless sensor nodes act as routers and transmit data to other nodes.

In a typical wireless sensor network service, 65% of all packets received by a node are transmitted to other nodes. In the wireless sensor network, when the serious network traffic congestion occurs, the time ratios related to wireless communication of the sensor nodes can be up to the ratio of 1: 3: 40 for standby: receive: transmit. In addition, the relative energy consumption of standby: receive: transmission in wireless communications is measured from 1: 1.05: 1.4 to 1: 2: 2: 2.5.

In the state where duty cycle is assumed to be 1, energy consumption is greatest due to the standby condition during wireless communication, and energy consumption is most affected by the transmission situation when the duty cycle is 10%. In a typical sensor network situation, a smaller duty cycle results in greater delays and lower energy consumption.

The most important element of the wireless sensor network-related technology is low power consumption technology, which requires not only the development of a long-lasting small power source but also an innovative system structure of software / hardware. However, the prior art as described above has a problem that the energy consumption efficiency is not high. Accordingly, in the relevant technical field, there is a demand for technical development of control in a system for increasing the efficiency of energy consumption of the wireless sensor node to operate the wireless sensor node for a long time.

Technical problem of the present invention devised to improve the above problems is a wireless sensor node control system and control for improving the energy efficiency to increase the efficiency of the energy consumption of the wireless sensor node to increase the life of the battery of the wireless sensor node It is an object to provide a method.

According to an embodiment of the present invention, an object of the present invention is to provide a wireless sensor node control system and a control method for simplifying the number and procedures of supplying power to the wireless sensor node by increasing the energy use efficiency of the wireless sensor node.

In addition, according to an embodiment of the present invention, an object of the present invention is to provide a wireless sensor node control system and control method for reducing the heat generated by the operation of the wireless sensor node to enable long-term operation.

In addition, according to an embodiment of the present invention, an object of the present invention is to provide a wireless sensor node control system and control method for reducing the energy (Energy) consumed in the message transfer process from a plurality of wireless sensor nodes in the environment.

However, the objects of the present invention are not limited to the above-mentioned objects, and other objects not mentioned can be clearly understood by those skilled in the art from the following description.

The wireless sensor node control system for improving energy efficiency according to an embodiment of the present invention includes a wireless sensor node and a control server, and the wireless sensor node includes at least one sensor unit and a content aware core control. A system, comprising: the control server for setting a filtering condition and transmitting the set filtering condition to the contextware shim; And storing the filtering condition, receiving first sensing data from the sensor unit according to an input of a first sensing data transmission request from an application layer, and sensing the first sensing according to filtering of the filtering condition in which the first sensing data is stored. When data can be transmitted to the control server, the first sensing data is stored and transmitted to the control server, and if it is determined that transmission of the first sensing data to the control server is unnecessary according to filtering of the filtering condition, The context aware shim storing the first sensing data and not transmitting to the control server; It may be characterized in that it comprises a.

The context aware shim receives the second sensing data from the sensor unit according to the input of the second sensing data transmission request from the application layer and cannot transmit the second sensing data to the control server according to the filtering of the stored filtering condition. If the second sensing data is stored and not transmitted to the control server, if the second sensing data can be transmitted to the control server according to filtering of the filtering condition, the second sensing data is stored and transmitted. When there is no first sensing data that is not yet, the second sensing data may be transmitted to the control server.

The context aware shim integrates the second sensing data with the first sensing data when there is the first sensing data that has not been previously transmitted, and generates sensing data in which the first and second sensing data are integrated. It may be characterized in that the transmission to the control server.

The first sensing data includes first temperature sensing data and first humidity sensing data, and the second sensing data includes second temperature sensing data and second humidity sensing data.

The filtering condition is a condition for improving a freezing probability, and may be an algorithm not to transmit the humidity sensing data to the control server when the temperature indicated in the temperature sensing data is room temperature.

In accordance with another aspect of the present invention, there is provided a wireless sensor node control method for improving energy efficiency, the control server comprising: a first step of setting a filtering condition and transmitting the set filtering condition to a context aware shim; A second step of the context aware shim storing the filtering condition and receiving first sensing data from a sensor unit according to an input of a first sensing data transmission request from an application layer; And when the first sensing data is transmitted to the control server according to the filtering of the filtering condition in which the first sensing data is stored, the context aware shim stores the first sensing data and transmits the first sensing data to the control server. A third step of storing the first sensing data and not transmitting the first sensing data to the control server if the first sensing data cannot be transmitted to the control server according to filtering of a filtering condition; It may be characterized in that it comprises a.

After the third step of the method for controlling the wireless sensor node for improving energy efficiency, the context aware shim receives the second sensing data from the sensor unit according to the second sensing data transmission request from the application layer. Fourth step; And when the context aware shim cannot transmit the second sensing data to the control server according to the filtering of the stored filtering condition, storing the second sensing data and not transmitting the second sensing data to the control server, and filtering the filtering condition. Storing the second sensing data when the second sensing data can be transmitted to the control server and transmitting only the second sensing data to the control server when there is no previously transmitted first sensing data. 5 steps; Wireless sensor node control method for improving energy efficiency comprising a further.

In the fifth step of the wireless sensor node control method for improving energy efficiency, when the context aware shim has the first sensing data that has not been transmitted, the second sensing data is converted into the first sensing data. Integrating with; And transmitting, by the context aware shim, sensing data in which the first and second sensing data are integrated to the control server. It may be characterized in that it comprises a.

The wireless sensor node control system and control method for improving energy efficiency according to the present invention provide an effect of increasing the efficiency of energy consumption of the wireless sensor node to increase the life of the battery of the wireless sensor node.

In addition, the present invention provides an effect of increasing the energy use efficiency of the wireless sensor node and simplifying the number and procedures of supplying power to the wireless sensor node.

In addition, by the present invention, it also provides an effect that can reduce the heat generated by the operation of the wireless sensor node to enable long-term operation.

Hereinafter, a detailed description of a preferred embodiment of the present invention will be described with reference to the accompanying drawings. In the following description of the present invention, detailed descriptions of well-known functions or configurations will be omitted when it is deemed that they may unnecessarily obscure the subject matter of the present invention.

In the present specification, when one component 'transmits' data or a signal to another component, any one component may directly transmit data or a signal to another component, and at least one other component. This means that data or a signal can be transmitted to other components through the APC.

1 is a block diagram showing a wireless sensor node control system 1000 for improving energy efficiency according to an embodiment of the present invention, Figure 2 is a view for explaining the wireless sensor node control system 1000 of FIG.

The wireless sensor node control system 1000 includes a wireless sensor node 100, a wireless network 500, a gateway 600, a wired network 700, and a control server 900. The wireless sensor node 100 may support a star topology function using Zigbee technology based on IEEE 802.15.4. ZigBee can support up to 150M transmission distance in the frequency band 2.4GHz to 2.485GHz. Meanwhile, the wireless sensor node 100 may be equipped with two 1.5V AA batteries, and may use AES 128 CCM Cryptography data encryption technology.

The wireless sensor node 100 includes one or more sensor units 110, 110_1 to 100_n, where n is a natural number, a context aware shim 300, and the wireless sensor node 100 is connected to a base node (not shown). Can be formed of a plurality.

The sensor unit 110 of the wireless sensor node 100 transmits the first sensing data to the internal context aware shim 130. Here, the first sensing data may be first temperature and first humidity sensing data.

Meanwhile, the context aware shim 300 inside the wireless sensor node 100 receives and stores filtering conditions from the control server 900.

Thereafter, the context aware shim 130 inside the wireless sensor node 100 internally receives a first sensing data transmission request from the application layer.

The context aware shim 130 determines whether the first temperature and first humidity sensing data, which are the first sensing data, are transmitted through the stored filtering condition analysis.

As a result of the determination, when the first sensing data transmission request satisfies the filtering condition, the context aware shim 130 stores the first sensing data and simultaneously transmits the first sensing data to the control server 900. On the other hand, if it is determined that the first sensing data transmission request does not meet the filtering condition, the context aware shim 130 stores the first sensing data and does not transmit it. That is, the context aware shim 130 determines the acceptance or rejection of the request for transmitting the sensing data from the application layer using the filtering condition received in advance.

The sensor unit 110 of the wireless sensor node 100 transmits second sensing data to an internal context aware shim 130. Here, the second sensing data may be second temperature and second humidity sensing data.

The context aware shim 130 internally receives the second sensing data transmission request from the application layer.

The context aware shim 130 determines whether the second temperature and second humidity sensing data, which are second sensing data, are transmitted through the stored filtering condition analysis.

If it is determined that the second sensing data transmission request does not meet the filtering condition, the context aware shim 130 stores only the second sensing data and does not transmit it to the control server 900. If the second sensing data transmission request satisfies the filtering condition, the context aware shim 130 stores the second sensing data and then determines whether there is the first sensing data that has not been transmitted.

If there is no first sensing data not previously transmitted, the context aware shim 130 transmits only the second sensing data to the control server 900. As a result of determination, when there is sensing data that has not been transmitted previously, the context aware shim 130 integrates the second sensing data with the first sensing data.

Thereafter, the context aware shim 130 transmits the sensing data in which the first and second sensing data are integrated to the control server 900. As described above, the context aware shim 130 transmits two integrated sensing data in one message, thereby reducing the number and length of message transmission.

The wireless network 500 may be a synchronous mobile communication network or an asynchronous mobile communication network. As an embodiment of the asynchronous mobile communication network, a WCDMA (Wideband Code Division Multiple Access) communication network is exemplified. In this case, although not shown in the drawings, the mobile communication network may include a radio network controller (RNC), an asynchronous mobile switching center (MSC), and the like. Meanwhile, although the WCDMA network is taken as an example, it is well known that it may be changed to a next-generation mobile communication network such as 3G LTE network and 4G network.

The gateway (G / W, 600) is one of the protocol converters, and data between the wireless sensor node 100 connected wirelessly through the wireless network 500 and the control server 900 connected by wire through the wired network 700. Enables sending and receiving. The gateway 600 may be a WAP gateway, and may include a protocol stack for the wireless sensor node 100 to access the control server 900.

The wired network 700 is a communication network that is a high-speed network of a large communication network capable of large-capacity, long-distance voice and data services, and may be a next-generation wired network for providing an Internet or high-speed multimedia service.

The wireless network 500, the gateway 600, and the wired network 700 may mutually transmit signals and data between the wireless sensor node 100, the control server 900, and other systems.

The control server 900 is fast in computing power and receives a large amount of situations from the wireless sensor node 100 to create a filtering condition for optimizing energy use, and the context awareness of the wireless sensor node 100. The low power sensor network can be implemented by delivering to the shim 130.

The control server 900 sets a filtering condition and transmits the set filtering condition to the context aware shim 130 in the wireless sensor node 100. Here, if the filtering condition is the same as the previous sensing data, only the message indicating that the same sensing data is transmitted to the control server 900 to reduce the message length or may be a condition not transmitting at all. In another embodiment of the present invention, the filtering condition is a rule instructing the wireless sensor node 100 not to send sensing data from the reception of the filtering condition, a rule instructing to send the collected sensing data once, and three times. For example, a rule to instruct to send once.

If the filtering condition is met, the control server 900 receives the first sensing data and / or the second sensing data from the context aware shim 130 of the wireless sensor node 100.

In addition, the control server 900 has not received the first sensing data, and in the case of receiving the second sensing data thereafter, by receiving the sensing data in which the first and second sensing data are integrated, the control server 900 may reduce the number and length of message transmission. Can be.

3 is a diagram illustrating a protocol stack of the wireless sensor node 100 of FIG. 1. 1 to 3, the wireless sensor node 100 receives a filtering condition from the control server 900.

Accordingly, the wireless sensor node 100 may transmit the first and second sensing data to be transmitted twice using the filtering condition as the integrated sensing data, or if the wireless sensor node 100 does not meet the filtering condition, may not transmit the first and second sensing data. . In addition, a method of implicitly sending information representing the current sensing data may be used according to the filtering condition.

As shown, the context layer (130d) between the network layer (100c) and the application layer (100d) of the protocol stack of the wireless sensor node 100 is added to the application layer (100d) through the situation recognition using filtering conditions By reducing the number of data transmissions and the amount of transmission by integrating the sensing data requested from the request or by determining whether the message is transmitted using filtering conditions, a method of reducing energy consumption in a network using a plurality of wireless sensor nodes 100 is used. do.

For example, in the wireless sensor node control system 1000 that detects freezing using temperature and humidity, the plurality of wireless sensor nodes 100 may have a temperature sensor and a humidity sensor. In this case, the wireless sensor node 100 may sense the freezing probability through the filtering condition received from the control server 900 and the previously stored freezing algorithm, and transmit the freezing probability to the control server 900.

On the other hand, if the temperature is below zero and the humidity is high, the probability of freezing is high. Assuming that the temperature is high and the humidity is not frozen, the control server 900 in the wireless sensor node control system 1000 collects temperature sensing data and humidity sensing data, and if the temperature is room temperature, the humidity sensor. As a command to lower the collection cycle of the humidity sensing data, a filtering condition may be transmitted to the wireless sensor node 100 to reduce energy consumed for sensing the humidity sensing data.

That is, when the wireless sensor node 100 receives two or more sensors (for example, a temperature sensor and a humidity sensor), and detects freezing, the context aware shim 130 in the wireless sensor node 100 has a temperature. It is possible to perform a low power function by reducing the number of message transmissions and the message length to the control server 900 through the situation recognition using the / humidity sensing data.

The wireless sensor node 100 may include a context aware shim 130 that performs situation recognition and filtering with the sensor unit 110, and a context aware gateway shim may also exist in the gateway 600. In addition, the control server 900 has a contextware middleware. Accordingly, the context assurance layers 130, the context assurance gateway shim, and the context assurance middlewares may interwork and cooperate with each other to perform a low power function.

4 is a flowchart illustrating a wireless sensor node control method for improving energy efficiency according to an exemplary embodiment of the present invention. 1 to 4, on the other hand, the control server 900 sets a filtering condition (S1), and transmits the set filtering condition to the context aware shim 130 in the wireless sensor node 100 (S3). . Here, if the filtering condition is the same as the previous sensing data, only the message indicating that the same sensing data is transmitted to the control server 900 to reduce the message length or may be a condition not transmitting at all. In another embodiment of the present invention, the filtering condition is a rule instructing the wireless sensor node 100 not to send sensing data from the reception of the filtering condition, a rule instructing to send the collected sensing data at once. It may be a rule for sending one time at a time.

The context aware shim 130 in the wireless sensor node 100 having received the filtering condition from the control server 900 stores the filtering condition (S5).

Thereafter, the context aware shim 130 internally receives the first sensing data transmission request from the application layer (S7).

The sensor unit 110 of the wireless sensor node 100 transmits the first sensing data to an internal context aware shim 130 (S9). Here, the first sensing data may be first temperature and first humidity sensing data.

Accordingly, the context aware shim 130 determines whether the first temperature and first humidity sensing data, which are the first sensing data through the filtering condition analysis stored in step S7, are transmitted (S11).

As a result of the determination in step S11, when the first sensing data transmission request satisfies the filtering condition, the context aware shim 130 stores the first sensing data and simultaneously transmits the first sensing data to the control server 900 (S13).

As a result of the determination in step S11, when the sensing data transmission request does not meet the filtering condition, the context aware shim 130 stores the first sensing data (S15). That is, the context aware shim 130 determines whether to accept or reject the request for transmitting the sensing data from the application layer by using the filtering condition previously received.

Thereafter, the context aware shim 130 internally receives the second sensing data transmission request from the application layer (S19).

Accordingly, the sensor unit 110 of the wireless sensor node 100 transmits the second sensing data to the context aware shim 130 therein (S21). Here, the second sensing data may be second temperature and second humidity sensing data.

Accordingly, the context aware shim 130 determines whether the second temperature and the second humidity sensing data, which are the second sensing data through the filtering condition analysis stored in step S7, are transmitted (S23).

As a result of the determination in step S23, when the second sensing data transmission request does not meet the filtering condition, the context aware shim 130 stores the second sensing data (S25).

On the other hand, when the sensing data transmission request meets the filtering condition as a result of the determination in step S23, the context aware shim 130 stores the second sensing data (S27).

After step S27, the context aware shim 130 determines whether there is first sensing data that has not been transmitted (S29).

If there is no first sensing data that has not been transmitted as a result of the determination in step S29, the context aware shim 130 transmits only the second sensing data to the control server 900 (S31).

On the other hand, if there is sensing data that has not been transmitted as a result of the determination in step S29, the context aware shim 130 integrates the second sensing data with the first sensing data (S33).

Thereafter, the context aware shim 130 transmits the sensing data in which the first and second sensing data are integrated to the control server 900 (S33). As described above, the context aware shim 130 transmits two integrated sensing data in one message, thereby reducing the number and length of message transmission.

On the other hand, the control server 900 has a fast calculation capability, receives a large amount of situations from the various wireless sensor node 100, to create a filtering condition that can optimize the energy use, this is the context of the wireless sensor node 100 The low power sensor network may be implemented by transmitting to the wear shim 130.

The present invention can also be embodied as computer-readable codes on a computer-readable recording medium. Computer-readable recording media include all kinds of recording devices that store data that can be read by a computer system. Examples of computer-readable recording media include ROM, RAM, CD-ROM, magnetic tape, floppy disks, optical data storage devices, and the like, which are also implemented in the form of carrier waves (eg, transmission over the Internet). It also includes.

The computer readable recording medium can also be injected onto a networked computer system so that the computer readable code is stored and executed in a distributed fashion. And functional programs, codes and code segments for implementing the present invention can be easily inferred by programmers in the art to which the present invention belongs.

Although the contents of the present invention have been described with reference to one embodiment shown in the drawings, this is merely exemplary, and those skilled in the art may realize various modifications and other equivalent embodiments therefrom. Will understand. Therefore, the true technical protection scope of the present invention will be defined by the technical spirit of the appended claims.

Wireless sensor node control system and control method for improving the energy efficiency of the present invention, by increasing the efficiency of the energy consumption of the wireless sensor node to increase the life of the battery of the wireless sensor node, to increase the energy use efficiency of the wireless sensor node. By simplifying the number and procedures of supplying power to the wireless sensor node, it is possible to provide a technology that compensates for the disadvantages of the existing technology.

BRIEF DESCRIPTION OF THE DRAWINGS In order to better understand the drawings cited in the detailed description of the invention, a brief description of each drawing is provided.

1 is a configuration diagram of a wireless sensor node control system for improving energy efficiency according to an embodiment of the present invention.

FIG. 2 is a diagram illustrating an internal configuration of the wireless sensor node control system of FIG. 1.

3 is a block diagram illustrating a protocol stack of the wireless sensor node of FIG.

4 is a flowchart illustrating a method for controlling a wireless sensor node for improving energy efficiency according to an exemplary embodiment of the present invention.

<Description of the symbols for the main parts of the drawings>

1000: Wireless Sensor Node Control System

100: wireless sensor node 110: sensor

300: Context Aware Sim 500: Wireless Network

700: wired network 900: control server

Claims (7)

In the wireless sensor node control system including a wireless sensor node and a control server, wherein the wireless sensor node includes at least one sensor unit, content assurance seam, Setting a filtering condition and transmitting the set filtering condition to the context wear shim; And Storing the filtering condition and receiving first sensing data from the sensor unit according to an input of a first sensing data transmission request from an application layer, When the first sensing data is transmitted to the control server according to the filtering of the filtering condition in which the first sensing data is stored, the first sensing data is stored and transmitted to the control server, and the filtering is performed according to the filtering of the filtering condition. The context awareness shim storing the first sensing data and not transmitting the first sensing data to the control server when it is determined that transmission of the first sensing data to the control server is unnecessary; Wireless sensor node control system for improving energy efficiency comprising a. The method of claim 1, wherein the context aware shim, Receiving the second sensing data from the sensor unit according to the input of the second sensing data transmission request from the application layer, When the second sensing data cannot be transmitted to the control server according to the filtering of the stored filtering condition, the second sensing data is not stored and transmitted to the control server, and the second sensing is performed according to filtering of the filtering condition. When the data can be transmitted to the control server, the second sensing data is stored, and if there is no unsent first sensing data, only the second sensing data is transmitted to the control server. Wireless sensor node control system. The method of claim 2, wherein the context aware shim is: When the first sensing data is not transmitted, the second sensing data is integrated with the first sensing data, and the sensing data in which the first and second sensing data are integrated is transmitted to the control server. Wireless sensor node control system for energy efficiency. The method of claim 3, wherein the first sensing data, The first temperature sensing data and the first humidity sensing data, The second sensing data, A second temperature sensing data and a second humidity sensing data; The filtering condition is a condition for improving the freezing probability. The wireless sensor node control system for improving energy efficiency, characterized in that the algorithm is not transmitted to the control server of the humidity sensing data when the temperature shown in the temperature sensing data is room temperature. A first step of setting, by the control server, the filtering condition and transmitting the set filtering condition to a contextware shim; A second step of the context aware shim storing the filtering condition and receiving first sensing data from a sensor unit according to an input of a first sensing data transmission request from an application layer; And  The context aware shim stores the first sensing data and transmits the first sensing data to the control server when the first sensing data can be transmitted to the control server according to the filtering of the filtering condition in which the first sensing data is stored. A third step of storing the first sensing data and not transmitting the first sensing data to the control server if the first sensing data cannot be transmitted to the control server according to filtering of a condition; Wireless sensor node control method for improving energy efficiency comprising a. The method of claim 5, wherein the step is performed after the third step, A fourth step of the context aware shim receiving second sensing data from a sensor unit according to an input of a second sensing data transmission request from an application layer; And When the context aware shim cannot transmit the second sensing data to the control server according to the filtering of the stored filtering condition, the context aware shim stores the second sensing data and does not transmit the sensing data to the control server. A fifth step of storing the second sensing data when the second sensing data can be transmitted to the control server, and transmitting only the second sensing data to the control server when there is no untransmitted first sensing data; Wireless sensor node control method for improving energy efficiency comprising a further. The method of claim 6, wherein the fifth step is performed, Integrating the second sensing data with the first sensing data when the context aware shim includes the untransmitted first sensing data; And Transmitting, by the context aware shim, sensing data in which the first and second sensing data are integrated to the control server; Wireless sensor node control method for improving energy efficiency comprising a.

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