KR20140113007A - Method and system for recover service of M2M device - Google Patents

Abstract

The present invention relates to a method and a system for recovering an M2M service, more particularly, to a method and a system for recovering an M2M service which maintain communications between M2M terminal and M2M server even when a failure occurs in a network which connects between M2M gateways or between M2M gateway and server. The present invention includes a step (a) in which an M2M terminal determines connectivity to a preregistered first M2M server through a pre-connected first M2M gateway; a step (b) in which the M2M terminal requests a re-registration to the first M2M server through at least one M2M gateways except the first M2M gateway, if the determined result shows that the connection with the first M2M gateway is impossible; a step (c) in which the first M2M server selects one M2M gateway among the M2M gateways, and transmits response data for re-registration of the M2M terminal to the selected one M2M gateway; and a step (d) in which the selected one M2M gateway transmits the response data to the M2M terminal. According to the present invention, an M2M service can be stably recovered/maintained even if a failure occurs in a network which connects between M2M gateways or between M2M gateway and M2M terminal, or the M2M service is out of available range of M2M area network which connects between M2M terminal and M2M gateway due to a change of M2M terminal location.

Description

[0001] The present invention relates to a method and system for recovering an M2M service,

The present invention relates to a method and system for M2M service recovery. More particularly, to an M2M service recovery method and system that enables communication between an M2M terminal and an M2M server to be maintained even when a failure occurs in a network connecting an M2M gateway or an M2M gateway and a server connected to the M2M terminal.

In general, machine to machine communication (M2M) refers to various communications in which communication is conducted without a person intervening in the communication process, and includes intelligent meter, e-health, connected consumer, Automation, automation, and automotive automation.

1 is a reference diagram for an M2M system configuration based on a standard document (ETSI TS 102 690).

As shown in FIG. 1, an M2M system for providing an M2M service includes an M2M device, an M2M area network, an M2M gateway, an access & core network, M2M service capabilities, an M2M application, M2M management functions, (M2M device, M2M gateway, M2M service capabilities, M2M applications, etc.) constituting the M2M system in the case of the M2M system having the same configuration as the communication object It is possible to communicate with each other.

Accordingly, in the case of the conventional M2M system, if the failure occurs in the M2M gateway or the network, it is possible to check whether the failure occurs, but the M2M service is interrupted until the M2M gateway or the network is restored.

Also, if the M2M device is moved out of the M2M area network connecting the M2M device and the M2M gateway, the M2M service may be interrupted.

As a conventional technique for solving such a problem, in Korean Patent No. 10-1206734, the stability of a data transmission path is calculated using a routing response message received from a previous node in a mobile ad hoc network, and the calculated value is transmitted to a routing response message A method of securing a detour route based on network stability by transmitting the detour route to the next node is proposed. However, in the case of the above method, the detour route is provided only for a problem occurring in the same network, There was a problem to be done.

Korean Patent Laid-Open Publication No. 10-2012-0050652 discloses a method of providing an effective connection establishment between a Zigbee terminal and an M2M gateway and enhancing security in establishing a connection. However, in the above method, when a failure occurs in a network to which the M2M gateway is connected There is a problem that the M2M service can not be restored.

SUMMARY OF THE INVENTION The present invention has been conceived to solve the above-mentioned problems, and it is an object of the present invention to provide a method and system for recovering an M2M service from an unspecified number of M2M gateways in the vicinity of an M2M terminal when a failure occurs in a network connecting an M2M gateway or an M2M gateway And M2M service is recovered from unspecified number of M2M gateways after the data for M2M service is transmitted to the M2M terminal so that the M2M terminal can communicate with the M2M server to recover the M2M service A method and a system.

According to another aspect of the present invention, there is provided a method of recovering an M2M service, the method comprising: (a) connecting a first M2M server to which the M2M terminal is registered in advance via a first M2M gateway connected to the M2M terminal in advance ; (b) if the connection with the first M2M gateway is not possible, the M2M terminal requests re-registration to the first M2M server via at least one or more M2M gateways other than the first M2M gateway ; (c) the first M2M server selects one of the at least one M2M gateways and transmits response data for re-registration of the M2M terminal to the selected one of the M2M gateways; And (d) the selected one M2M gateway transmits the response data to the M2M terminal.

The method may further include: (a1) before the step (a), the M2M terminal requests an authentication key to the first M2M server through the first M2M gateway; And (a2) transmitting, by the first M2M server, the authentication key from the authentication server according to the request, to the M2M terminal via the first M2M gateway.

The step (b) may further include: (b1) transmitting the re-registration request message and the authentication key to the at least one M2M gateway through the M2M terminal; (b2) transmitting the re-registration request message and the authentication key to each M2M server connected to each M2M gateway by the at least one M2M gateway; And (b3) each of the M2M servers transmitting the re-registration request message and the authentication key to the first M2M server.

In the step (b1), the re-registration request data and the authentication key may be transmitted to the at least one M2M gateway by a broadcasting method.

The method may further include, after the step (b1), (b11) determining whether the at least one gateway has validated the authentication key transmitted from the M2M terminal.

The step (c) may further include: (c1) checking whether the first M2M server receives the authentication key first received from each of the M2M servers; And (c2) transmitting a response message for the re-registration request message to the M2M server that has transmitted the first received authentication key among the respective M2M servers as a result of the confirmation, And sending a re-registration refusal message to at least one or more M2M servers.

In step (a), it is checked whether the M2M terminal receives a response message to data transmitted to the first M2M server via the first M2M gateway. If the response message is not received, It may be determined that the connection with the gateway is impossible.

In addition, the step (c2) may further include (c3) deleting the re-registration request message and the authentication key from at least one or more M2M servers that have received the re-registration rejection message.

Also, an M2M service recovery system according to a preferred embodiment of the present invention includes an M2M terminal, an M2M gateway including a first M2M gateway pre-networked with the M2M terminal, The M2M terminal service recovery system includes a plurality of M2M servers including a first M2M server, the system comprising: a first MWM server for receiving an authentication key from the M2M terminal in response to an authentication key request transmitted from the M2M terminal to the first MWM server via the first M2M gateway; The M2M terminal checks whether the first M2M server can be connected to the first M2M server through the first M2M gateway, and transmits the first M2M server to the first M2M server, And the second M2M server via the at least one M2M gateway among the plurality of M2M gateways The first M2M server transmits the authentication key and the re-registration request message, and the first M2M server selects one of the at least one M2M gateway received the authentication key and the re-registration request message, And transmits response data for re-registration of the M2M terminal to the selected one of the M2M gateways, and the selected one of the M2M gateways transmits the response data to the M2M terminal.

The first M2M server receives the authentication key and the re-registration request message from each M2M server connected to the at least one or more M2M gateways, And transmits a response message for the re-registration request message to the M2M server that has transmitted the authentication key first received from each of the M2M servers. The M2M server, which has transmitted the first received authentication key, The M2M gateway transmits the response message to the M2M gateway, and the selected one M2M gateway can transmit the response message to the M2M server.

According to the present invention, by transmitting / receiving data for recovering the M2M service through a plurality of M2M gateways located around the M2M terminal, a failure occurs in the network connecting the M2M gateway or the M2M gateway and the M2M terminal is changed The M2M service between the M2M terminal and the M2M server can be reliably restored and maintained even if the available range of the M2M area network connecting the M2M terminal and the M2M gateway is deviated.

In addition, after the M2M server transmits the authentication key from the M2M terminal to the plurality of M2M gateways in a broadcast manner, it verifies the validity of the data transmitted from the M2M gateway to the M2M gateway, It is possible to prevent a network attack and an increase in network traffic that may be caused by data transmission of the broadcasting scheme.

1 is a reference diagram for an M2M system configuration based on a standard document (ETSI TS 102 690)
Figure 2 is a block diagram of an M2M system in accordance with a preferred embodiment of the present invention;
3 is a flowchart of an M2M service recovery method according to a preferred embodiment of the present invention,
FIGS. 4 to 6 are reference views of a method for recovering an M2M service according to a preferred embodiment of the present invention.
FIG. 7 is a detailed flowchart of S300 of FIG. 3,
8 is a reference diagram for S300 of FIG. 3,
Fig. 9 is a detailed flowchart of S400 of Fig. 3,
10 is a reference diagram for S400 of Fig. 3, and Fig.
11 to 13 are reference views for a case where the M2M service recovery method according to the preferred embodiment of the present invention is actually applied.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the drawings, the same reference numerals are used to designate the same or similar components throughout the drawings. In the following description of the present invention, a detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear. Further, the preferred embodiments of the present invention will be described below, but it is needless to say that the technical idea of the present invention is not limited thereto and can be practiced by those skilled in the art.

FIG. 2 is a block diagram of an M2M system according to a preferred embodiment of the present invention, FIG. 3 is a flowchart of an M2M service recovery method according to a preferred embodiment of the present invention, and FIGS. And a method for recovering the M2M service according to the present invention.

2, the M2M system 1 according to the preferred embodiment of the present invention includes an M2M terminal 10, first to Nth M2M gateways 20a, 20b and 20n, N M2M servers 30a and 30n.

The M2M terminal 10 is a terminal device that communicates with a communication object in a state where there is no input or intervention of a human, or minimizes the input and intervention of a human. The M2M terminal 10 can send and transmit data held by itself or on demand, Data can be exchanged with the first M2M server 30a in which the M2M terminal 10 is registered in advance via the network 20a.

At this time, the M2M terminal 10 and the first M2M gateway 20a can be network-connected through the first M2M area network, and the first M2M gateway 20a and the first M2M server 30a can connect to the first network Can be connected through a network.

Here, the first M2M area network to the Nth M2M area network are IEEE 802.15.x, Zigbee, Bluetooth, IEFT ROLL. A personal area network (PAN) such as ISA100.11a, a wireless local area network (WLAN), or a LAN such as PLS, M-BUS, Wireless M-BSU, KNX, 1 Network to the Nth Network are access networks (for example, xDSL, HFC, FTTH, PLC, Satellite Network, GERAN, UTRAN, eUTRAN, Wireless) that are the networks that allow the M2M gateway and the M2M server to communicate with the core network, Core networks (e.g., 3GPP CN, ETSI TISPAN, etc.), which provide IP connectivity, access network control, network service control, interconnection with other networks, CN, 3GPP2 CN, IMS, etc.).

In addition, the M2M terminal 10 includes at least one communication module and can be connected to at least one or more M2M gateways simultaneously or sequentially. For example, the first M2M area network may be a WLAN, a second M2M area network The M2M terminal 10 may include at least one of a WLAN, a Bluetooth, and a Zigbee communication module to access the first M2M gateway to the Nth M2M gateway, if the N-th M2M area network is Zigbee-based. .

The first M2M gateway to the Nth M2M gateway 20a, 20b and 20n represent a gateway for executing the M2M application using the M2M service capabilities and serve as a proxy between the M2M terminal 10 and the first network .

The first M2M server to the Nth M2M server 30a and 30n provide a function that can be shared by different applications (i.e., the first M2M Applications to the Nth M2M Applications of FIG. 2) And serves as the Network Service Capabilities Layer (NSCL) that provides an environment for accessing other service capabilities.

2, the M2M terminal 10 in the M2M system 1 according to the preferred embodiment of the present invention accesses the first M2M gateway 20a through the first M2M area network in a normal state Communication with the first M2M server 30a is performed through the first network connected to the first M2M gateway 20a. However, when the first M2M gateway 20a or the first network fails, The second M2M server 20a can not connect to the first M2M gateway 20a by moving away from the available range of the first M2M area network by utilizing the M2M service recovery method according to the preferred embodiment of the present invention. 30a. The method for recovering the M2M service according to the preferred embodiment of the present invention will be described with reference to FIGS. 3 to 6. FIG.

As shown in FIG. 3 and FIG. 4, in step S100, the M2M terminal 10 determines whether the first M2M gateway 20a can be connected.

In step S100, the M2M terminal 10 transmits the specific data (e.g., registration request data or the like) to the first M2M server 30a via the first M2M area network, the first M2M gateway 20a, After confirming whether or not the response message data transmitted from the first M2M server 30a is received with respect to the specific data, it is determined whether or not connection to the first M2M gateway 20a is possible In other words, when the M2M terminal 10 receives the response message data for the specific data from the first M2M server 30a, the M2M terminal 10 transmits the response message data to the first M2M gateway 20a and The first M2M server 30a can determine that the second M2M server 30a can be connected to the first M2M server 30a through the first network. If the M2M terminal 10 fails to receive the response message data for the specific data from the first M2M server 30a, The terminal 10 includes a first M2M gate It can be determined that a failure has occurred in the way 20a or the first network.

5, when the M2M terminal 10 requests the first M2M server 30a for the authentication key (S20 in FIG. 5) before the step S100, the first M2M server 30a transmits the authentication key to the authentication server (Step S40 in FIG. 5) of requesting an authentication key to the first M2M server 30a after the authentication server 40 generates the authentication key, The M2M server 30a may transmit the authentication key to the M2M terminal 10 via the first M2M gateway 20a (S80 in FIG. 4).

If it is determined in S200 that the M2M terminal 10 can be connected to the first M2M gateway 20a, the process is terminated. In S200, the M2M terminal 10 can not connect to the first M2M gateway 20a The M2M terminal 10 requests re-registration to the first M2M server 30a via at least one or more M2M gateways 20b and 20n excluding the first M2M gateway 20a in step S300.

In step S300, the DA (Device Application) of the M2M terminal 10 requests the brokering transmission of data for the re-registration to CMs (Communication Modules) as shown in FIG. 6, the method comprising: transmitting data for re-registration to a broadcast address of a network, the CMs of the M2M gateway corresponding to the broadcasting address and having received the data for re-registration, (GSCL), and analyzing data for re-registration received by the GSCL and transmitting the analyzed data to the first M2M server 30a. The detailed procedure of S300 is as follows. This will be described in more detail with reference to FIGS. 7 and 8. FIG.

In step S400, the first M2M server 30a selects one of the M2M gateways 20b and 20n and selects a response to re-register the M2M terminal 10 with the selected one M2M gateway And transmits the data.

At this time, the detailed procedure of S400 will be described in detail with reference to FIG. 9 and FIG.

When the selected one M2M gateway transmits the response data to the M2M terminal 10 in S500, the process ends.

FIG. 7 is a detailed flowchart of S300 of FIG. 3, and FIG. 8 is a reference diagram of S300 of FIG.

7 and 8, at step S310, the M2M terminal 10 transmits a re-registration request message to at least one or more M2M gateways 20b and 20n except for the first M2M gateway 20a, And transmits the authentication key transmitted from the authentication server 30a.

At this time, the re-registration request message and the authentication key may be transmitted to the at least one M2M gateway 20b, 20n in a broadcast manner at S310.

In addition, following step S310, the at least one gateway 20b, 20n determines whether the authentication key transmitted from the M2M terminal 10 is valid, and performs step S330 only when the authentication key is valid .

In step S330, the at least one or more M2M gateways 20b and 20b transmits the re-registration request message and the authentication key to each M2M server connected to each M2M gateway.

Referring to FIG. 2, if the second M2M gateway 20b receives the re-registration request message and the authentication key through the second M2M area network, The M2M server 30a can transmit the re-registration request message and the authentication key, and in the case of the N M2M gateway 20n receiving the re-registration request message and the authentication key through the N M2M area network, And transmits the re-registration request message and the authentication key to the N-th M2M server 30n connected to the network.

In step S350, when each of the M2M servers transmits the re-registration request message and the authentication key to the first M2M server 30a, the process is terminated and performed in step S400.

Referring to FIG. 2, in operation S350, if the N-th M2M gateway 20n receives the registration request message and the authentication key through the N-th network, the re-registration request message and the authentication key are transmitted to the first M2M To the server 30a.

FIG. 9 is a detailed flowchart of S400 of FIG. 3, and FIG. 10 is a reference diagram of S400 of FIG.

As shown in FIGS. 9 and 10, in step S410, the first M2M server 30a confirms whether the authentication key received from each M2M server is received first.

If it is determined in step S420 that the authentication key is received for the first time, the first M2M server 30a transmits a response message to the M2M server that transmitted the first received authentication key in step S430, The M2M server that has transmitted the first received authentication key transmits the response message to the M2M gateway connected to the network, the process is terminated and S500 is performed.

2, when the first M2M server 30a confirms the authentication key transmitted from the N M2M gateway 20n as the first received authentication key, the first M2M server 30a May transmit the response message for the re-registration request message to the N-th M2M server 30n, and the N-th M2M server 30n may transmit the response message to the N-th M2M server 30n through the N-th M2M gateway 20n, A response message can be transmitted.

If it is determined in S420 that the authentication key is not received for the first time, the first M2M server 30a transmits the re-registration request message to at least one or more M2M servers, When at least one or more M2M servers that have transmitted the authentication key not transmitted the first time in S460 delete the re-registration request message and the authentication key, the process is terminated and S500 is performed.

2, when the first M2M server 30a confirms that the authentication key transmitted from the N M2M gateway 20n has not been received for the first time, the first M2M server 30a May transmit the re-registration rejection message for the re-registration request message to the N-th M2M server 30n, and the N-th M2M server 30n may delete the re-registration request message and the authentication key.

Hereinafter, the case where the M2M terminal service recovery method according to the preferred embodiment of the present invention is actually applied to the fields of electronic health (e-Health), automotive automation, and communication appliances I will explain it in detail.

11 to 13 are reference views for a case where the M2M service recovery method according to the preferred embodiment of the present invention is actually applied.

11 illustrates an embodiment of a method for recovering an electronic health service by applying an M2M terminal service recovery method according to a preferred embodiment of the present invention. As shown in FIG. 11, The personal health terminal unit (i.e., corresponding to the M2M terminal 10 in Fig. 2), which is a terminal for measuring the biometric information of an individual who needs care such as a patient or an elderly person, periodically checks an individual's health condition, (in other words, corresponding to the first M2M server 30a in FIG. 2), and notifies the ehealth server immediately if an abnormality occurs in an individual's health condition or an emergency occurs.

In addition, the personal health terminal includes a communication module such as Bluetooth, WLAN, and Zigbee for accessing the M2M area network. In a normal state, the personal health terminal includes a personal smartphone (i.e., corresponding to the first M2M gateway 20a of FIG. 2 And transmits health state information to the ehealth server.

If the personal smartphone serving as the M2M gateway fails or the battery is disconnected during the sudden collapse of the individual's health condition, the personal health terminal can not transmit the emergency information to the ehealth server , The personal health terminal can not transmit the emergency information to the ehealth server even if an emergency occurs while leaving the personal smartphone.

If the personal health terminal does not receive a response after transmitting the emergency information, the personal health terminal determines that a failure has occurred in the M2M area network, the M2M gateway, or the network, and transmits a part or all of the M2M area network connection modules And transmits the emergency information transmission related data in a broadcast manner.

(I.e., corresponding to the second M2M gateway 20b of FIG. 2) receiving the emergency information transmission related data via the Bluetooth or WLAN network connects to the ehealth server through the second mobile network After the request, the ehealth service can be restored and maintained by mediating data transmission / reception between the personal health terminal and the ehealth server.

At this time, the method of connecting the personal health terminal with the ehealth server through the other user smart phone has been described above, so a detailed description thereof will be omitted.

In addition, the WiFi AP is an AP installed by an individual or a communication service provider, and can serve as an M2M gateway as well as provide an Internet service to a terminal equipped with a WLAN module. The WiFi AP that has received the information transmission related data requests the access to the ehealth server through the wired network, and mediates data transmission / reception between the personal health terminal and the ehealth server, thereby restoring and maintaining the ehealth service.

In addition, the traffic / security / public / disaster prevention gateway collects information from traffic, crime prevention, public / disaster prevention sensors based on Zigbee network, transmits it to public service server through public network, and provides services such as traffic guidance and weather information The traffic / security / public / disaster prevention gateway, which has received the emergency information transmission related data from the personal health terminal through the Zigbee network, verifies the validity of the broadcast data, and if valid data is transmitted through the public network The public service server may request the connection to the ehealth server and then relay the data transmission / reception between the personal health terminal and the ehealth server so that the ehealth service can be restored and maintained.

As described above, the ehealth server receiving the emergency information of the personal health terminal from another user smartphone, WiFi AP, or traffic / crime prevention / public / disaster gateway accesses the personal health terminal through all three paths and transmits the ehealth service The ehealth service can be continued by selecting one or more routes that are superior to the route or the network state in which the emergency information first arrives among the three routes.

In addition, the ehealth server receiving the emergency information immediately informs the medical institution, the paramedics or the guardian of the emergency situation so that the individual in the emergency situation can be rescued to protect the life and safety of the individual.

Accordingly, even if the personal smartphone connected to the personal health terminal is disconnected from the M2M area network and the emergency information can not be transmitted, the individual can continuously use the ehealth service, You will be protected.

Next, FIG. 12 illustrates an embodiment of a method for recovering a traffic accident automatic report service based on a vehicle black box or navigation by applying an M2M terminal service recovery method according to a preferred embodiment of the present invention. (I.e., corresponding to the M2M terminal 10 of Fig. 2), the navigation device recognizes the position of the vehicle and displays the position of the vehicle (For example, the M2M terminal 10 shown in FIG. 2), which informs the surrounding buildings, restaurants,

The black box or navigation may periodically check the status information of the vehicle and provide status information periodically or when requested by a traffic information server (i.e., corresponding to the first M2M server 30a of FIG. 2) Or if an accident occurs in the vehicle in which the navigation system is installed, immediately notifies the traffic information server.

In addition, the black box or navigation device is equipped with a communication module such as WLAN to Zigbee. In a normal state, the WLAN is connected to a personal smartphone (i.e., corresponding to the first M2M gateway 20a of FIG. 2) And transmits the vehicle status information to the information server.

If the personal smartphone fails or the battery is disconnected due to an accident of the vehicle, the black box or the navigation device can not transmit the traffic accident information to the traffic information server. If the personal smartphone is not carried, The black box or the navigation system can not transmit the traffic accident information to the traffic information server.

For example, if the black box or the navigation does not receive a response after transmitting the traffic accident information, the black box or navigation recognizes that the M2M area network, the M2M gateway, or the network has failed, and transmits data on traffic accident information in a broadcast manner using some or all of the network access modules.

(I.e., corresponding to the second M2M gateway 20b of FIG. 2) that has received the data on the traffic accident information via the WLAN network is connected to the traffic information server through the second mobile network The traffic accident related M2M service can be restored and maintained by mediating data transmission / reception between the black box or the navigation and the traffic information server.

At this time, the method of connecting the other user's smartphone with the traffic information server has been described above, so a detailed description thereof will be omitted.

Also, the traffic information collection gateway collects traffic information from the traffic information sensors based on the Zigbee network, transmits the traffic information to the traffic information server through the public network, and provides services such as traffic information, and transmits the traffic information from the black box or navigation through the Zigbee network The traffic accident-related M2M service is recovered and maintained by intercepting data transmission / reception between the black box or the navigation and the traffic information server after transmitting the traffic accident information to the traffic information server through the public network after receiving the data on the traffic accident information can do.

The communication company WiFi AP provides Internet service to the terminal equipped with the WLAN module and receives data on the traffic accident information through the WLAN from the black box or navigation device and then transmits data to the communication company M2M server through the wired network And the communication company M2M server requests the connection to the traffic information server and then mediates data transmission / reception between the black box or navigation system and the traffic information server so that the traffic accident related M2M service can be restored and maintained.

In addition, the traffic information server, which has received the data on the traffic accident information from another user smart phone, traffic information collection gateway, or M2M server of the communication company, accesses the black box or navigation through three routes to obtain a traffic accident related M2M service M2M service can be continued by choosing one or more routes that are superior to the route or network state in which the emergency information arrives first among the three routes.

In addition, the traffic information server that receives the data on the traffic accident information notifies the police, the paramedics, the medical institution, the road management agency, and the insurance company of the traffic accident information to rescue the person in emergency, Protect safety, quickly eliminate traffic congestion and ensure roads are restored.

As a result, individuals can continue to use M2M services for traffic accidents, even if the M2M gateway fails or is unable to transmit urgent information such as traffic accidents because the M2M area network is out of the available range. It will be able to protect safety and reduce social costs due to traffic congestion.

13 illustrates an embodiment of a method for recovering an M2M service for preventing abduction / misappropriation by applying an M2M terminal service recovery method according to a preferred embodiment of the present invention. Referring to FIG. 13, Similarly, at least one of the abduction / misadventure prevention sensors is installed in a personal belonging or a body, and is provided with a terminal (e.g., M2M in Fig. 2) for transmitting information on an individual's emergency situation such as location information or kidnapping to a kidnap / (Corresponding to the terminal 10), and checks the location information or the state information of the individual, periodically checks the location of the first and second M2M servers 30a and 30b (corresponding to the first M2M server 30a of FIG. 2) ), Or if an individual presses a kidnap / abandon prevention sensor in an emergency, the emergency information is immediately transmitted to the kidnap / misbehavior management and the location information server.

In addition, the abdurability / spoilage prevention sensor includes one or more communication modules such as Bluetooth, WLAN, Zigbee, etc., and a personal smartphone (corresponding to the first M2M gateway 20a of FIG. 2) To the Bluetooth or WLAN, and transmits the location information and the status information.

For example, if the personal smartphone is lost due to abduction or the like, the abduction / losering prevention sensor is out of the Bluetooth / WLAN range of the personal smartphone and transmits the location information and status information to the abduction / As shown in FIG.

Therefore, if the abduction / prevention control sensor does not receive a response from the abduction / infant management and the location information server after transmitting the related data, the abduction / misjudgment prevention sensor may have a failure in the M2M area network, the M2M gateway or the network And transmits the location information and the state information related data in a broadcast manner.

(I.e., corresponding to the second M2M gateway 20b of FIG. 2) receiving the location information and the status information related data via the Bluetooth or WLAN network, And a location information server, and the data transmission / reception between the abduction / infant prevention sensor and the infant / infant management and the location information server is mediated after requesting connection to the infant / outbreak prevention and location information server.

At this time, the method of connecting the other user's smartphone with the abduction / infant management and the location information server has been described above, so that a detailed description thereof will be omitted.

Also, the WiFi AP is an AP installed by an individual or a communication service provider, and can provide an Internet service to a terminal equipped with a WLAN module and can act as an M2M gateway. The location information and status Upon receiving the information-related data, the WiFi AP requests a connection to the abortion / infant management and the location information server through a wired network, and then mediates data transmission / reception between the abduction / infant prevention sensor and the abduction / infant management and the location information server The M2M service related to the abduction / prevention of child abduction can be restored and maintained.

In addition, the traffic / crime prevention / public / disaster prevention gateway collects related information from traffic / crime prevention / public / disaster prevention sensors based on the Zigbee network, transmits it to the public service server through the public network, The traffic / crime prevention / public / disaster prevention gateway which receives the location information and the state information related data from the abduction / prevention control sensor through the Zigbee network is transmitted to the public service server through the public network, The service server requests the connection to the location information server to prevent the abduction / misappropriation and the location information server, and then mediates data transmission / reception between the abduction / misjudgment prevention sensor and the abduction / .

In addition, the abducted / unjustified management and location information server receiving the location information and the state information related information immediately notifies an emergency situation to a kidnapping / childrearing agency such as a guardian or a police to rescue an individual in a crisis situation, It can protect life and safety.

As a result, individuals can continue to use the M2M service for the abduction / loss prevention even if the M2M gateway fails or the emergency information can not be transmitted beyond the M2M area network, thereby protecting the individual's life and safety do.

The M2M service recovery method of the present invention determines whether or not the M2M terminal 10 can connect to the first M2M gateway 20a connected in advance and if it is impossible to connect the at least one M2M service recovery method except for the first M2M gateway 20a The M2M terminal 10 transmits data for re-registration with the first M2M server 30a previously registered in the M2M gateway and the authentication key transmitted from the first M2M server 30a in advance by broadcasting.

The at least one M2M gateway transmits the re-registration data and an authentication key to each M2M server to which each M2M gateway is connected, and each of the M2M servers transmits the re-registration data to the first M2M server (30a) Lt; RTI ID = 0.0 > and / or < / RTI >

In addition, the first M2M server 30a determines whether or not the authentication key transmitted from each M2M server has been received for the first time, and transmits the response data for the re-registration data to the M2M server that has transmitted the first received authentication key Upon receiving the response data, the M2M server transmits the response data to the first M2M terminal 10 through the connected M2M gateway 10 so that communication is established between the first M2M terminal 10 and the first M2M server 30a So that the M2M service can be restored.

Accordingly, even if the network connecting the M2M gateway or the M2M gateway and the M2M server fails, or the M2M terminal changes its position, the M2M area network that connects the M2M terminal and the M2M gateway deviates from the available range of the M2M gateway, The M2M service between the terminal and the M2M server can be reliably restored and continued.

In addition, after the M2M server transmits the authentication key from the M2M terminal to the plurality of M2M gateways in a broadcast manner, it verifies the validity of the data transmitted from the M2M gateway to the M2M gateway, It is possible to prevent a network attack and an increase in network traffic that may be caused by data transmission of the broadcasting scheme.

In addition, since the validity of the data received from the M2M terminal is checked by the M2M gateway and only the valid data is transmitted to the M2M server, it is possible to prevent a network attack and an increase in network traffic that may be caused by the data transmission of the broadcasting method.

It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims. It will be possible. Therefore, the embodiments disclosed in the present invention and the accompanying drawings are intended to illustrate and not to limit the technical spirit of the present invention, and the scope of the technical idea of the present invention is not limited by these embodiments and the accompanying drawings . The scope of protection of the present invention should be construed according to the following claims, and all technical ideas within the scope of equivalents thereof should be construed as being included in the scope of the present invention.

(10): M2M terminal (20a): first M2M gateway
(20b): the second M2M gateway 20n: the N < th > M2M gateway <
(30a): first M2M server (30n): Nth M2M server

Claims (10)

(a) determining whether the M2M terminal can connect to the first M2M server registered in advance via the first M2M gateway connected to the M2M terminal in advance;
(b) if the connection with the first M2M gateway is not possible, the M2M terminal requests re-registration to the first M2M server via at least one or more M2M gateways other than the first M2M gateway ;
(c) the first M2M server selects one of the at least one M2M gateways and transmits response data for re-registration of the M2M terminal to the selected one of the M2M gateways; And
and (d) the selected one M2M gateway transmits the response data to the M2M terminal. The method according to claim 1,
Prior to the step (a)
(a1) requesting an authentication key from the M2M terminal to the first M2M server through the first M2M gateway; And
(a2) the first M2M server transmits the authentication key to the M2M terminal through the first M2M gateway after receiving the authentication key from the authentication server according to the request. . 3. The method of claim 2,
The step (b)
(b1) transmitting the re-registration request message and the authentication key to the at least one M2M gateway through the M2M terminal;
(b2) transmitting the re-registration request message and the authentication key to each M2M server connected to each M2M gateway by the at least one M2M gateway; And
(b3) each M2M server transmitting the re-registration request message and the authentication key to the first M2M server. The method of claim 3,
In the step (b1)
Wherein the re-registration request data and the authentication key are transmitted to the at least one M2M gateway by a broadcasting method. The method of claim 3,
Following the step (b1)
(b11) determining whether the at least one gateway validates the authentication key transmitted from the M2M terminal. The method of claim 3,
The step (c)
(c1) confirming whether or not the first M2M server first receives the authentication key received from each of the M2M servers; And
(c2) transmits a response message for the re-registration request message to the M2M server that has transmitted the first received authentication key among the respective M2M servers, And sending a re-registration refusal message to one or more M2M servers. The method according to claim 1,
The step (a)
The M2M terminal confirms whether or not a response message to the data transmitted to the first M2M server via the first M2M gateway is received, and if the response message is not received, The method comprising the steps of: The method according to claim 6,
Following the step (c2)
(c3) the at least one M2M server having received the re-registration refusal message deletes the re-registration request message and the authentication key. An M2M terminal including a plurality of M2M servers including an M2M terminal, an M2M gateway including a first M2M gateway pre-networked with the M2M terminal, and a first M2M server previously networked with the first M2M gateway, A terminal service recovery system comprising:
And an authentication server for generating the authentication key according to an authentication key request transmitted from the M2M terminal to the first MWM server via the first M2M gateway and transmitting the authentication key to the first M2M server,
The M2M terminal checks whether or not connection to the first M2M server is possible through the first M2M gateway. If the connection is not possible with the first M2M server as a result of the confirmation, the at least one M2M gateway among the plurality of M2M gateways And transmits the authentication key and re-registration request message previously transmitted from the first M2M server via the gateway,
The first M2M server selects one of the M2M gateways among the at least one M2M gateway received the authentication key and the re-registration request message, and then re-registers Transmits response data,
And the selected one M2M gateway transmits the response data to the M2M terminal. 10. The method of claim 9,
Wherein the first M2M server receives the authentication key and the re-registration request message from each of the M2M servers connected to the at least one M2M gateway through a network, and determines whether or not the first authentication key received from each of the M2M servers is received Transmits a response message for the re-registration request message to the M2M server that has transmitted the first received authentication key among the respective M2M servers,
The M2M server that has transmitted the first received authentication key transmits the response message to the selected one of the M2M gateways,
And the selected one M2M gateway transmits the response message to the M2M server.

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