KR101627608B1 - Dynamic connecting system between client and server - Google Patents

Abstract

The present invention proposes a dynamic connection system between a client and a server. A client in which the location may be changed according to an embodiment of the present invention and dynamically connecting with the server is managed to be connected to any one of a central server and a plurality of local servers pre-allocated to manage a plurality of context- A connection management unit; A determination unit for determining whether a specific context area in which the client is located exists among the plurality of context aware areas in a state connected to the central server; And transmitting the information on the specific situation aware zone to the central server when the specific situation aware zone exists, and receiving information on a specific local server previously allocated to manage the specific situation aware zone from the central server And the connection management unit disconnects the connection with the central server when connected to the specific local server while connected to the central server.

Description

[0001] DYNAMIC CONNECTING SYSTEM BETWEEN CLIENT AND SERVER [

The present invention relates to a client-server dynamic access system.

Recently, a technique for providing various location based services to users based on the location information obtained through mobile communication network or GPS (Global Positioning System) has become popular.

In particular, with the spread of smart phones, applications for providing location-based services are continuously being developed.

For example, a user can receive various contents from a large-sized shopping mall, a department store, a clothing store, a restaurant, a movie theater, a bookstore, a pharmacy, a hospital, a school, Also, the user can search for or request the preferred or required information through the location-based service, and receive the content corresponding to the search signal or the request signal.

Geo-fencing, on the other hand, is a type of technology that provides location-based services. Geographically, a GPS fence is set up to detect users entering and leaving the fence.

1 is a diagram for explaining a location-based service and a geopanning service.

As shown in FIG. 1, a geo-panning area 100 consisting of points 101 to 108 is set to check a user's entrance / exit status or to transmit a character notification or specific information to a user located in the corresponding area 100 .

In this regard, Korean Patent Laid-Open Publication No. 2013-0082914 (entitled " Location-based Contents Providing Method and Apparatus ") includes a step in which a server receives location information of a first terminal; The server searching for a second terminal adjacent to the first terminal based on the location information; The server obtaining information on contents in the second terminal; And transmitting, by the server, information on the content to the first terminal.

However, in the case of most location-based services or geo-panning services as well as the technology disclosed in Korean Laid-Open Patent Application No. 2013-0082914, there is a concern that the location information of the terminal is directly received and personal information is infringed.

In addition, the load on the server may significantly increase in order to provide various location-based services or geopanning services in real time, and the server may lack data capacity or resources. This problem can be solved by adding additional servers, but considering the cost, manpower, and time to add servers, it is necessary to solve these problems more fundamentally.

In addition, technologies to utilize multiple access points (APs), such as NFC and RFID, have been proposed to provide location based services.

In the case of the technology using the short distance communication, a precondition is required that a specific tag or the like should be installed in the service site and a short range communication sensor must be embedded in the smart phone. Also, the service efficiency is dependent on the performance of the sensor, and the maintenance cost may be incurred due to the damage or damage of the installed tag.

In the case of a technology using multiple APs, various location estimation algorithms such as triangulation are applied by using the distance or time with the AP to find the position of the service object. However, since the existing AP facilities can not be utilized, the initial introduction cost is increased, and when the service area is changed, the rebuilding cost and management cost may be considerable.

Disclosure of Invention Technical Problem [8] Accordingly, the present invention has been made keeping in mind the above problems occurring in the prior art, and it is an object of the present invention to provide a dynamic connection system between clients and servers capable of providing various location- There is a purpose.

Another object of the present invention is to provide a central server (connection server, business server) and a local server that can stably provide an optimized service to a plurality of unspecified clients through a connection distribution processing technique.

It should be understood, however, that the technical scope of the present invention is not limited to the above-described technical problems, and other technical problems may exist.

As a technical means for achieving the above technical object, a client according to an embodiment of the present invention, which can change its location and dynamically connect with a server, includes a central server and a pre- A connection manager for managing connection to any one of a plurality of local servers; A determination unit for determining whether a specific context area in which the client is located exists among the plurality of context aware areas in a state connected to the central server; And transmitting the information on the specific situation aware zone to the central server when the specific situation aware zone exists, and receiving information on a specific local server previously allocated to manage the specific situation aware zone from the central server And the connection management unit disconnects the connection with the central server when connected to the specific local server while connected to the central server.

According to another aspect of the present invention, there is provided a central server for providing dynamic access, comprising: a plurality of business servers; And a connection server for determining a predetermined business server among the plurality of business servers in accordance with a predetermined algorithm in a state where the client is connected to a position-changeable client, wherein the connection server transmits information on the determined business server to the client And disconnects the connection with the client when the determined business server and the client are connected, and when the determined business server receives information on the specific situation area in which the client is located from the client, Transmits information about a specific local server pre-allocated to manage the area to the client, and disconnects the client from the client when the specific local server and the client are connected.

According to another aspect of the present invention, there is provided a method of providing content to a client capable of changing a location of a specific local server, the method comprising: accessing a client located in a specific context aware area allocated to the specific local server; And providing content for the specific context aware area to the client while the specific local server and the client are connected, wherein the connecting comprises: And is accessed after being transferred from the central server which was connected before connection to the client.

A method for dynamically connecting a client to a server according to an exemplary embodiment of the present invention includes the steps of connecting to a central server, Judging whether or not it is possible; Transmitting the information on the specific situation awareness zone to the central server when the specific situation aware zone exists; Receiving from the central server information about a specific local server pre-allocated to manage the specific situation awareness area among a plurality of local servers; And disconnecting the connection with the central server after being connected to the specific local server based on the information about the specific local server.

According to any one of the above-mentioned objects of the present invention, the client can dynamically access the server without burdening with memory, resource, battery, information update, traffic load, or packet consumption, Various location-based services, geo-panning services, or emergency alert services can be smoothly provided without transmission.

Further, according to any one of the tasks of the present invention, connection between any one of a plurality of servers (an access server, a business server, and a local server) having different roles is dynamically performed, The contents are transmitted to the client, and various location-based services, geopansing services, emergency alert services, and the like can be efficiently performed.

In addition, the servers can distribute the burden imposed on a single server so that dynamic access can be performed to a large number of clients without much difficulty, and personal information problems do not occur because the location information of the clients is not collected.

In addition, if the situation awareness area increases, there is no need to modify the central server, and a low cost local server that manages the increased situation awareness area can be added. Accordingly, it is possible to provide a continuous service for the other situation awareness area, and it is possible to expect simple maintenance, repair, and cost reduction for the entire system.

1 is a diagram for describing a location-based service and geopanning service,
FIG. 2 is a general view of a client-server dynamic access system according to the present invention;
3 is a block diagram illustrating a configuration of a client according to an exemplary embodiment of the present invention.
4 is a diagram showing an example of a connection relationship between a client and a server,
5 is a diagram showing another example of a connection relationship between a client and a server,
6 is a diagram showing another example of a connection relationship between a client and a server,
FIG. 7 is a flowchart illustrating a method for a client to dynamically access a server according to an exemplary embodiment of the present invention;
FIG. 8 is a flowchart illustrating a method of providing a content to a client by a specific local server according to an exemplary embodiment of the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. It should be understood, however, that the spirit of the present invention is not limited to the illustrated embodiment, and that other embodiments can be easily invented by adding, changing, deleting, adding, or the like components within the scope of the same concept of understanding the spirit of the present invention But it will also be included within the scope of the present invention.

In order to clearly illustrate the present invention, parts not related to the description are omitted, and like parts are denoted by similar reference numerals throughout the specification.

Throughout the specification, when a part is referred to as being "connected" to another part, it includes not only "directly connected" but also "electrically connected" with another part in between . Also, when an element is referred to as "comprising ", it means that it can include other elements as well, without departing from the other elements unless specifically stated otherwise. And the word " step "or" step "does not mean " step for. &Quot;

FIG. 2 is a diagram illustrating a client-server dynamic access system according to an embodiment of the present invention.

The client-server dynamic connection system according to the present invention includes at least one client 210, a central server 230, and at least one local server 250, which are connected to each other via a network 270. When an arbitrary location-based service environment is actually implemented, a plurality of clients 210 and a plurality of local servers 250 may be included in general.

In this case, the network 270 means a connection structure in which information can be exchanged between each node such as terminals and servers. An example of such a network is a 3rd Generation Partnership Project (3GPP) network, an LTE A wireless LAN, a WAN (Wide Area Network), a PAN (Personal Area Network), a LAN (Personal Area Network) But are not limited to, a Bluetooth network, a satellite broadcast network, an analog broadcast network, a Digital Multimedia Broadcasting (DMB) network, and the like.

The client 210 connects to the central server 230 or the local server 250 through the network 270 according to various communication methods known in the art. The client 210 may be located within any " X " geographic area, and the geographic location of the client 210 within the " X "

At this time, the client 210 may be implemented as a computer, a portable terminal, or the like, which can be carried by a user according to an example. In another example, the client 210 may be a computer, a terminal, or the like mounted on a vehicle such as a passenger car or a motorcycle .

Here, the computer may include, for example, a notebook, a desktop, a laptop, or the like, on which a WEB Browser is mounted.

In addition, the portable terminal is a wireless communication device that is guaranteed to be portable and mobility, for example, a Personal Communication System (PCS), a Global System for Mobile communications (GSM), a Personal Digital Cellular (PDC) PDA (Personal Digital Assistant), IMT (International Mobile Telecommunication) -2000, CDMA (Code Division Multiple Access) -2000, W-CDMA (W-CDMA), WiBro (Wireless Broadband Internet) Based wireless communication device such as a smart phone, an Evolution terminal, a Smart Phone, a SmartPad, a tablet PC, a slate PC, and the like.

The central server 230 connects to or disconnects from the client 210 via the network 270. The central server 230 may include at least one access server 232, at least one business server 234, and a database 236. When an arbitrary location-based service environment is actually implemented, one connection server 232 and a plurality of business servers 234 may be included as one group in general. In addition, the business server 234 may be additionally connected in parallel according to the number of clients 210 to be covered.

A detailed description of the central server 230 and the connection server 232, the business server 234, and the database 236, which are detailed configurations thereof, will be described later.

The local server 250 connects to or disconnects from the client 210 via the network 270, similar to the central server 230. Each local server 250 may be pre-assigned to manage each of the context awareness areas within the " X " geographical area in which the client 210 may be located. For reference, the local server 250 may be implemented as an embedded PC or the like having a lower performance (specification) than the connection server 232 or the business server 234 in order to save the overall system construction cost.

For example, a first local server is pre-assigned to manage a first situation awareness zone, and a second local server is pre-assigned to manage a second situation awareness zone. The first situation awareness area and the second situation awareness area are set in the " X " geographical area as a virtual area.

Hereinafter, with respect to the configurations of the client 210, the central server 230, and the local server 250 and the operation of the corresponding configuration in the client-server dynamic access system according to the present invention, This will be described in detail.

<Client>

3 is a block diagram illustrating a configuration of a client according to an exemplary embodiment of the present invention.

As shown in Fig. 3, the client 300 may be a computing device mounted in the vehicle a and may be a smartphone b or a tablet PC c itself. However, the embodiment of the client 300 is not limited to those described above.

The client 300 can be connected to the server dynamically and can be connected to the server dynamically and includes a connection management unit 310, a determination unit 320, a transmission / reception unit 330, a signal generation unit 340, a display unit 350, A GPS unit 370, and an electronic control unit 380. The GPS unit 370 may be a GPS receiver.

However, the server 300 shown in FIG. 3 is only one embodiment of the present invention, and various modifications are possible based on the components shown in FIG. For example, the server 300 may further include a user interface for receiving a command or information from a user. In this case, the user interface may be an input device such as a keyboard, a mouse, or the like, but may be a graphical user interface (GUI) represented in an image display device.

In addition, these configurations can be implemented in the form of an application (App). Such an application may be specifically developed for the present invention, may be installed in the client 300 by downloading an execution program, and may be interworked with other applications in the client 300. [

The connection management unit 310 can manage the client 300 to be connected to a central server and any one of a plurality of local servers pre-allocated to manage a plurality of context aware areas.

When the client 300 is connected to a specific local server that is pre-assigned to manage the specific situation area in which the client 300 is located in a state where the client 300 is connected to the central server, the connection manager 310 disconnects the connection with the central server .

According to an example, the determination unit 320 may determine whether a specific situation area exists in which a client is located among a plurality of situation-aware zones in a state where the client 300 is connected to a central server.

Specifically, the determination unit 320 updates the position information of the client 300 whenever the position information of the client 300 is received from the GPS unit 370, and updates the position information of the client 300 It is possible to judge whether or not a specific situation recognition area exists based on the information.

Here, information on a plurality of context-aware areas may be information received from a central server connected to the client 300, or information previously stored in the storage unit 360 of the client 300. In addition, the GPS unit 370 can communicate with the communication satellite at a predetermined time interval (for example, 30 seconds to 45 seconds apart) to receive the location information of the client 300. [

In addition, the storage unit 360 may include a non-volatile memory device such as a cache, a read only memory (ROM), a programmable ROM (PROM), an erasable programmable ROM (EPROM), an electrically erasable programmable ROM (EEPROM), and a flash memory Or a storage medium such as a CD-ROM, a hard disk drive (HDD), or a volatile memory device such as a random access memory (RAM).

According to another example, the determination unit 320 may determine whether the client is out of the specific situation area while the client 300 is connected to a specific local server.

In this way, when the client 300 is out of the specific circumstance area, the connection management unit 310 can disconnect from the specific local server and reconnect with the central server (particularly, the connection server to be described later).

Meanwhile, when there is a specific situation area in which the client 300 is located, the transmission / reception unit 330 may transmit information on the specific situation area to the central server.

In addition, the transceiver 330 may receive information about a specific local server, which is pre-allocated to manage the specific situation awareness area from the central server.

However, the transceiver 330 does not receive the location information of the client 300 to the central server or the local server. Therefore, according to the present invention, since the location information of the user is not collected, a problem related to personal information leakage can be solved.

In addition, the transmitting / receiving unit 330 can receive contents of a specific situation-aware area from a specific local server while the client 300 is connected to a specific local server.

In addition, the communication method applied to the transmission / reception unit 330 may be a TCP / IP scheme.

The display unit 350 can control the content of the specific situation or area received from the specific local server to be displayed on the display screen (not shown) of the client 300. [

For example, when the client 300 is a computing device mounted in the vehicle a, the display unit 350 can display the content through a display screen installed on the center fascia or a head-up display on the front glass window. The driver can select the content and can obtain various information about the specific situation in which the vehicle (a) is located (large-sized mart, department store, clothing store, restaurant, movie theater, bookstore, pharmacy, hospital, have.

As described above, an administrator, an advertiser, or a government agency that manages a specific situation awareness area can quickly and accurately provide contents to a plurality of clients located in a specific situation aware area, and a user in a specific situation awareness area can display contents Location-based services, geo-panning services, or emergency alert services.

Here, the emergency alert service can be understood with reference to the contents disclosed in Korean Registered Patent No. 10-1295748 filed by the same inventor as the present invention and entitled &quot; System for Providing Emergency Public Alert Service &quot;.

In addition, the signal generator 340 may generate a connection request signal for connection with a central server in response to a specific application of the client 300 or an execution signal for executing a specific program. In addition, the signal generator 340 may generate a connection request signal for connection with a specific local server when receiving information on a specific local server from the central server. That is, the signal generator 340 can generate a connection request signal for connection with various servers at an appropriate timing, and the format of the connection request signal can be determined according to a known technique, Can be different.

The electronic control unit 380 may be a configuration for instructing and controlling the operation of the detailed configuration in the client 300. [ For example, when receiving a content for a particular situation-aware area from a specific local server to be described later, the electronic controller 380 displays the received content on a display screen (not shown) up format. &lt; / RTI &gt;

As described above, the client according to an embodiment of the present invention can dynamically access the server without burdening with memory, resource, battery, information update, traffic load, or packet consumption, Location-based services, geo-panning services, or emergency alert services.

<Central Server>

2, a central server 230 providing dynamic connections in the context of the clients 210 described above may include an attachment server 232, a business server 234, and a database 236 .

A plurality of business servers 234 are connected in parallel and perform basically the same role. When a location-based service is actually implemented, a plurality of clients 210 request a corresponding location-based service to the central server 230, and the central server 230 analyzes and processes each request, Should be. If the central server 230 manages all operations related to connections, tasks, content, etc., the central server 230 may provide a highly satisfactory location-based service to the client 210 due to excessive load jams, It is easy to understand that there is no.

According to an embodiment of the present invention, any one of a plurality of servers (connection server, business server, local server) having different roles dynamically connects with the client 210, It is possible to minimize the burden on the resource or the lack of memory when performing the operation. In addition, it is possible to reduce the cost of constructing a platform from the viewpoint of managing the server, and to cope with the increase in the number of clients 210 in the future.

The connection server 232 mainly handles the connection of the user and can deliver the address of the business server 234, which is an actual interworking server, to the user.

The connection server 232 can determine a predetermined business server 234 among a plurality of business servers according to a predetermined algorithm in a state where the connection server 232 is connected to the client 210 whose position can be changed.

Here, the connection server 232 can be connected to the client 210 based on a connection request signal generated in response to an execution signal for executing a specific application or a specific program installed in the client 210. [ In addition, the algorithm applied to connection server 232 may be a conventional technique that is already known, such as, for example, a load-balancing technique.

The connection server 232 also transmits information on the determined business server 234 to the client 210 and disconnects the client 210 when the determined business server 234 and the client 210 are connected to each other have. That is, the connection server 232 is a server to which the client 210 has been connected before being connected to the determined business server 234.

In this case, when the business server 234 receives the information on the specific situation area in which the client 210 is located from the client 210, the determined business server 234 transmits the specific situation information to the specific local server 250 Information is transmitted to the client 210, and when the specific local server 250 and the client 210 are connected, the connection with the client 210 can be disconnected.

That is, the business server 234 can monitor and manage the state of the user in cooperation with the connection server 232, and can deliver the address of the local server 250 to the user when the specific condition is satisfied.

The database 236 in the central server 230 may store various information and may be stored in a hard disk drive, a ROM (Read Only Memory), a RAM (Random Access Memory) A flash memory, a memory card, and the like.

Specifically, the database 236 may store information on a plurality of context-aware areas and information on a plurality of pre-allocated local servers to manage a plurality of context-aware areas, respectively. Here, the information on a plurality of local servers may include IP information of each local server, port (PORT) information, information on managed context aware areas, and the like.

At this time, the determined business server 234 can search the information on the specific local server in the database 236 based on the information on the specific situation area in which the client 210 is located, To the client 210.

As described above, the central server according to an embodiment of the present invention performs dynamic connection without any difficulty to a large number of clients, and performs various operations such as various location-based services, geopansing services, Can be performed.

<Local server>

Meanwhile, in the present invention, a local server 250 providing dynamic connection in relation to the client 210 described above is also proposed.

2, the first local server is pre-assigned to manage a first context aware area, the second local server is pre-assigned to manage a second context aware area, and the Nth local server is pre- . &Lt; / RTI &gt; The at least one situation awareness area managed in this way is set as an imaginary area within any &quot; X &quot; geographical area.

That is, each of the local servers 250 intensively manages independent pre-allocated areas in cooperation with the business server 234, accesses a client located in the state aware area, Lt; RTI ID = 0.0 &gt; client &lt; / RTI &gt;

The local server 250 may be physically or logically implemented. Thus, the particular local server pre-assigned to manage the particular context awareness area does not necessarily have to be located within the specific context awareness area. That is, since a plurality of local servers can be implemented to be located in one space, there is no particular limitation on the implementation position.

In addition, each local server 250 may provide content for context-aware areas that are differently pre-assigned to the client 210 that is maintaining the connection through the network 270. A process of confirming the existence of the content before the content is provided, and a process of requesting the client 210.

Since the location of the client 210 is within the specific situation area, the user can check the contents of the specific situation area provided to the client 210 and perform future activities within the specific situation area You can get a lot of help.

For example, if the A local server is pre-assigned to manage the B department store area, then the A local server is located in the department store area B and is a client connected to the A local server, Information can be provided.

In addition, if the C local server is a pre-allocated server for managing the D beach area, the C local server is a client connected to the C local server while being located in the D beach area, and stores weather information near the D beach or Ian stream Information can be provided.

In addition, the performance (specification) of each local server 250 may vary depending on the number of users (number of clients) to be processed in the environment or context aware area.

For example, if the E local server is a pre-allocated server to manage the F department store area, and the F department store has an average of 10,000 visitors per day, the E local server built with the 300,000 won specification will cover all the visitors of F department store And provide additional services such as connection and content provisioning. G Given that the local server is a pre-allocated server to manage the H beach area, and the average number of visitors to H beach is 50,000, the G local server constructed with a specification of 1 million won covers all visitors to H beach and provides smooth access and contents And so on.

At the same time, each local server 250 may have a relatively lower performance (specification) than the central server 230, the access server 232, or the business server 234 already described above. Since the actual overall system construction cost may be proportional to the cost of constructing each local server 250, a low performance PC or its corresponding device capable of implementing the functions proposed in the present invention may operate as the local server 250 can do.

The access distribution processing technique by the central server and the local server described so far can provide an optimized service for an unspecified number of users and significantly reduce the investment cost and the maintenance cost for actual implementation.

Meanwhile, each of the components shown in FIGS. 2 and 3 may be configured as a 'module'. The term 'module' refers to a hardware component such as software or a Field Programmable Gate Array (FPGA) or an Application Specific Integrated Circuit (ASIC), and the module performs certain roles. However, a module is not limited to software or hardware. A module may be configured to reside on an addressable storage medium and may be configured to execute one or more processors. The functionality provided by the components and modules may be combined into a smaller number of components and modules or further separated into additional components and modules.

<Connection relation between client and server>

Hereinafter, the connection relationship between the client, the central server (connection server and business server), and the local server will be described in detail with reference to FIGS. 4 to 6. FIG.

4 is a diagram showing an example of a connection relationship between a client and a server.

The client 420 transmits a connection request signal to the connection server 440 in the central server (S401).

When the connection server 440 approves the received connection request signal, a connection is established between the client 420 and the connection server 440 (S402).

The connection server 440 determines a predetermined business server 460 among the plurality of business servers in the central server (S403), and transmits the information about the predetermined business server to the client 420 (S404).

The client 420 transmits a connection request signal to a predetermined business server 460 based on the information about the predetermined business server received from the connection server 440 (S405).

When a predetermined business server 460 approves the received connection request signal, a connection is established between the client 420 and a predetermined business server 460 (S406), and connection between the client 420 and the connection server 440 (S407).

In operation S408, the client 420 transmits information on a specific situation area in which the client is located to a predetermined business server 460 in a state that the client 420 is connected to a predetermined business server 460.

The predetermined business server 460 searches the specific local server 480 that is pre-assigned to manage the specific situation awareness area among the plurality of local servers, based on the information on the specific situation awareness area received from the client 420 (S409).

The predetermined service server 460 transmits information about the specific local server to the client 420 according to the search result (S410).

The client 420 transmits a connection request signal to the specific local server 480 based on the information about the specific local server received from the predetermined business server 460 (S411).

When the specific local server 480 approves the received connection request signal, a connection is established between the client 420 and the specific local server 480 (S412), and the connection between the client 420 and the predetermined business server 440 (S413).

Since the connection between any one of the plurality of servers (connection server, business server, and local server) having different roles is dynamically performed, it is possible to distribute the burden imposed on a single server, Personal information collection problems can also be solved.

If the context awareness area grows, there is no need to modify the central server, and a local server dedicated to managing the increased context awareness can be added. Accordingly, it is possible to provide a continuous service for the other situation awareness area, and to expect simple maintenance, repair, and cost reduction.

5 is a diagram showing another example of a connection relationship between a client and a server.

The client may change its position and may move in time from the first a position 501 to the f position 506 as shown in FIG.

When the client application is first driven in the a location 501, the client transmits a connection request signal to the connection server 510 in the central server, and connection between the client and the connection server 510 is established. However, connection between the client and the connection server 510 can be performed by an event other than the application activation.

The connection server 510 determines a predetermined business server 520 among a plurality of business servers in the central server, and transmits information on a predetermined business server to the client.

The client accesses the predetermined business server 520 based on the information about the predetermined business server and disconnects the connection server 510 from the client.

a client moving from a location 501 to a location 502 maintains a connection with a given business server 520 and moves to the c location 503 in the first context aware area A. [

The client determines whether there is a specific situation or area in which the client is located among the plurality of context aware areas A, B, C, .... Here, the information on a plurality of context-aware areas may be information received from a predetermined business server 520 connected to the client, or information pre-stored in the client.

Since it is determined that the client is located in the first context awareness area A, the client transmits information on the first context awareness domain to the predetermined business server 520.

The predetermined task server 520 receives the information on the first context awareness area and determines whether the first context awareness area A of the plurality of local servers 531, 532, 533, The first local server 531 is searched.

The predetermined service server 520 transmits information about the first local server to the client according to the search result, and the client receives the information about the first local server and sends a connection request signal to the first local server 531 .

When the first local server 531 approves the received connection request signal, a connection is established between the client and the first local server 531, and the connection between the client and the predetermined service server 520 is disconnected.

The client determines whether or not the client leaves the first situation-aware area A in a state in which the client is connected to the first local server 531. [

As the client moves from the c position 503 to the d position 504, the client leaves the first situation awareness area A. [ In this case, the client disconnects from the first local server 531 and reconnects with the connection server 510.

As described above, the connection server 510 determines a predetermined business server 520 among a plurality of business servers in the central server, and transmits information on a predetermined business server to the client.

The client accesses the predetermined business server 520 based on the information about the predetermined business server and disconnects the connection server 510 from the client.

the client moving from the d position 504 to the e position 505 maintains a connection with the given business server 520 and moves to the f position 506 in the second situation awareness area B. [

The client determines whether there is a specific situation or area in which the client is located among the plurality of context aware areas A, B, C, ....

Since it is determined that the client is located in the second context awareness area B, the client transmits information on the second context awareness domain to the predetermined business server 520.

The predetermined task server 520 receives the information on the second context awareness area and determines whether the preliminarily allocated task is to be allocated to manage the second context awareness area B among the plurality of local servers 531, 532, 533, The second local server 532 is searched.

The predetermined service server 520 transmits information about the second local server to the client according to the search result, and the client receives the information about the second local server and sends a connection request signal to the second local server 532 .

When the second local server 532 approves the received connection request signal, a connection is established between the client and the second local server 532, and the connection between the client and the predetermined business server 520 is disconnected.

The client receives the content for the second context aware area from the second local server 532 and displays the content to the user.

In addition, referring to FIG. 5, in the case of the second context aware area B and the third context aware area C, there is an overlapped area. The client located in the overlapped area can access both the second local server 532 and the third local server 533 at the same time and receive contents for both areas from both servers.

Furthermore, with reference to FIG. 6, description will be made regarding content provision according to various location-based services. 6 is a diagram showing another example of a connection relationship between a client and a server.

The client 820 receives information on the specific local server from the central server 840 (S801). The information for a particular local server may be the result searched by the central server 840 or a given business server.

The client 820 transmits a connection request signal to a specific local server based on the information about the specific local server received from the central server 840 (S802).

When the specific local server 860 approves the received connection request signal, a connection is established between the client 820 and the specific local server 860 (S803), and the connection between the client 820 and the central server 840, The connection between the server 820 and the predetermined business server is disconnected (S804).

Since the specific local server 860 is pre-allocated to manage the specific situation awareness area, the client 820 provides the content for the specific situation awareness area (S805).

The client 820 periodically or non-periodically determines whether the client 820 is located in a specific situation aware area. This determination process may be performed at any time after connection with the specific local server 860. [

When the client 820 is located in the specific situation aware area (S806), the connection between the client 820 and the specific local server 860 is maintained (S807).

If the client 820 is out of the specific situation area (S808), the connection between the client 820 and the specific local server 860 is disconnected (S809). The client 820 also reconnects with the central server 820 or the connection server.

In this way, the connection between any one of the servers (connection server, business server, local server) having different roles and the client is dynamically performed and the contents of the context aware area are transmitted to the client, Geo-panning service, emergency alert service, etc. can be smoothly performed. In addition, since the server does not collect the location information of the client, the personal information problem does not occur.

<Dynamic Server Connection Method>

7 is a flowchart illustrating a method for a client to dynamically connect to a server according to an embodiment of the present invention.

In step S710, the client capable of changing its position determines whether there is a specific situation area in which a client is located among a plurality of state aware areas in a state of being connected to the central server.

If there is a specific situation awareness area (S720), the client transmits information about the specific situation awareness zone to the central server (S730). If the specific situation awareness area does not exist, the client maintains connection with the central server, It is determined again whether or not the area exists after a predetermined time (S710).

In operation S740, the client receives from the central server information on a specific local server that is pre-allocated to manage the specific situation area among a plurality of local servers in response to the information transmitted to the central server.

The client is disconnected from the central server after being connected to the specific local server based on the information about the specific local server (S750).

Hereinafter, the dynamic server connection method described above will be described in more detail.

A client whose position can be changed can generate a connection request signal for connection with a central server in response to an execution signal for executing a specific application of a client or a specific program.

The client may send a connection request signal until it is connected to the central server. That is, since the connection between the client and the central server is established with the approval of the central server for the connection request signal, the client can transmit the connection request signal until it is connected to the central server.

The client can receive information on a business server determined by the connection server according to a predetermined algorithm among a plurality of business servers in the central server while being connected to the connection server in the central server. The client can disconnect the connection server after connecting with the determined business server by transmitting information about the business server determined by the connection server.

As described above, the client can determine whether there is a specific situation area in which a client is located among a plurality of situation-aware areas in a state of being connected to a determined business server in the central server.

At this time, the client may receive information on a plurality of context-aware areas from the determined business server, or may determine based on information on a plurality of context-aware areas previously stored in the client.

Further, the client updates location information of the client each time the location information of the client is received, and determines whether or not the specific situation aware area exists based on the updated location information and information on a plurality of context aware areas have.

If there is a specific situation awareness area, the client can transmit information about the specific situation awareness area to the determined business server in the central server, and if there is no specific situation awareness area, the client maintains connection with the determined business server in the central server And it is possible to judge again whether or not a specific situation recognition area exists after a predetermined time.

The client can receive information on a specific local server, which is pre-assigned to manage the specific situation area among a plurality of local servers, corresponding to the information transmitted to the determined business server in the central server, from the determined business server in the central server.

The client can disconnect from the determined business server in the central server after being connected to the specific local server based on the information about the specific local server.

In addition, the client can determine whether or not the client is out of the specific situation area while connected to a specific local server. If the client leaves the specific situation, the client can disconnect from the local server and reconnect with the server in the central server.

< contents  Delivery method>

FIG. 8 is a flowchart illustrating a method of providing a content to a client by a specific local server according to an exemplary embodiment of the present invention.

The specific local server performs an operation of allocating a specific situation area, which is a virtual area set in an arbitrary geographical area, to a specific local server (S810).

According to an example, the specific situation awareness area is set in an administrator terminal having authority to manage the corresponding area, and information on a specific situation or area set can be received by a specific local server.

Such a setting method can be understood by referring to the contents disclosed in Korean Patent Application No. 10-2012-0122301 (entitled &quot; Mesh Data Generation Method and Generating Method for Location Based Content Providing Service &quot;) filed by the same inventor as the present invention .

According to another exemplary embodiment of the present invention, in operation S810, a specific local server transmits location information of an administrator terminal from an administrator terminal having authority to manage a specific context area at at least three different points . Based on the received location information, a specific local server can set a geometric shape made up of different points as a specific situation awareness area.

For example, the administrator terminal can acquire the location information at different X, Y, Z points by the marking method, and can transmit the acquired location information to a specific local server. The positional information at the points X, Y and Z forms a triangle, and the triangle can be set as a specific situation-aware area which is a virtual area. The size of the triangle may be limited according to predetermined conditions.

Next, the specific local server accesses the client located in the specific situation area assigned to the specific local server (S820).

Specifically, the connecting step S820 is performed after the information on the specific local server is transmitted from the central server, which has been connected before being connected to the specific local server, to the client.

In step S830, the specific local server provides the contents of the specific situation aware area to the client in the state that the specific local server and the client are connected.

After that, if the client goes out of the specific situation area, the specific local server disconnects the client.

It will be understood by those skilled in the art that the foregoing description of the present invention is for illustrative purposes only and that those of ordinary skill in the art can readily understand that various changes and modifications may be made without departing from the spirit or essential characteristics of the present invention. will be. It is therefore to be understood that the above-described embodiments are illustrative in all aspects and not restrictive. For example, each component described as a single entity may be distributed and implemented, and components described as being distributed may also be implemented in a combined form.

The scope of the present invention is defined by the appended claims rather than the detailed description and all changes or modifications derived from the meaning and scope of the claims and their equivalents are to be construed as being included within the scope of the present invention do.

210: client 230: central server
232: connection server 234: business server
236: Database 250: Local server
270: Network

Claims (20)

For a client whose location may change and dynamically connect to the server,
A connection management unit for managing the connection to be connected to any one of a plurality of local servers pre-allocated to manage a plurality of context aware areas, respectively;
A determination unit for determining whether a specific context area in which the client is located exists among the plurality of context aware areas in a state connected to the central server; And
And transmitting the information on the specific situation aware area to the central server when the specific situation aware area exists, and transmitting / receiving the information on the specific local server already allocated to manage the specific situation aware area from the central server &Lt; / RTI &gt;
Wherein the connection management unit is disconnected from the central server when connected to the specific local server while being connected to the central server,
The determination unit updates the location information each time the location information of the client is received from the GPS in the client, and determines based on the updated location information and information on a plurality of context-aware areas collected in the client ,
The specific situation awareness area may include:
A virtual area set in an arbitrary geographical area allocated to the specific local server,
Wherein the specific local server receives location information of the administrator terminal from an administrator terminal having authority to manage the specific situation awareness area at at least three different points, And defining a geometric shape made up of different points as the specific situation awareness area.
The method according to claim 1,
Further comprising a signal generation unit for generating a connection request signal for connection with the central server corresponding to an execution signal for executing the specific application or the specific program of the client.
The method according to claim 1,
Wherein the determination unit receives information on the plurality of context-aware areas from the central server and determines the information based on information on a plurality of context-aware areas previously stored in the client.
The method according to claim 1,
Wherein the determination unit determines whether the client is out of the specific situation area in a state of being connected to the specific local server,
Wherein the connection management unit disconnects the connection with the specific local server and reconnects with the central server when the user leaves the specific situation aware area.
delete The method according to claim 1,
Wherein the transmitting and receiving unit is connected to the specific local server and receives the content for the specific situation aware area from the specific local server,
The method according to claim 6,
Further comprising a display unit for controlling content displayed on the display screen of the client to display the specific situation awareness area.
A central server for providing dynamic connections,
A plurality of business servers; And
And a connection server for determining a predetermined business server among the plurality of business servers according to a predetermined algorithm in a state that the client is connected to a client whose position can be changed,
Wherein the connection server transmits information on the determined business server to the client, disconnects the connection with the client when the determined business server and the client are connected,
When the determined task server receives the information on the specific situation area in which the client is located, the task server transmits to the client information on a specific local server that is pre-allocated to manage the specific situation aware area, Disconnect the connection with the client when the local server and the client are connected,
The information on the specific situation area in which the client is located is updated by updating the location information each time the client receives the location information of the client from the GPS in the client, Is transmitted from the client to the determined business server based on the information about the location information and the updated location information,
The specific situation awareness area may include:
A virtual area set in an arbitrary geographical area allocated to the specific local server,
Wherein the specific local server receives location information of the administrator terminal from an administrator terminal having authority to manage the specific situation awareness area at at least three different points, And defining a geometric shape made up of different points as the specific situation awareness area.
9. The method of claim 8,
Further comprising a database for mapping and storing information on the plurality of context aware areas and information on a plurality of local servers previously allocated to manage the plurality of context aware areas,
And the determined business server searches the information on the specific local server in the database based on the information on the specific situation awareness area.
9. The method of claim 8,
Wherein the connection server is connected to the client based on a connection request signal generated corresponding to an execution signal for executing a specific application or a specific program installed in the client.
A method for providing content to a client in which a particular local server may be located,
Performing an operation of assigning a specific situation aware area to the specific local server that is a virtual area set in an arbitrary geographical area;
Accessing a client located in a specific context aware area assigned to the particular local server; And
And providing the content for the specific context aware area to the client in a state where the specific local server and the client are connected,
Wherein the connecting step updates the location information each time the client receives the location information of the client from the GPS in the client and updates the information on the plurality of situation aware areas collected in the client and the updated location information The server transmits a request for the specific local server information for managing the specific situation aware area to the central server that was connected to the specific local server before the connection to the specific local server After the information about the specific local server is transmitted from the central server to the client,
The step of performing the allocating operation
Receiving position information of the manager terminal from an administrator terminal having authority to manage the specific situation awareness area at at least three different points; And
And setting the geometric shape made up of the different points as the specific situation awareness area based on the received position information.
delete delete 12. The method of claim 11,
And disconnecting the client from the client when the client is out of the specific situation awareness area.
In a method in which a client whose location can be changed dynamically connects to the server,
Determining whether a specific situation area exists in a plurality of situation-aware zones in a state where the client is connected to the central server;
Transmitting the information on the specific situation awareness zone to the central server when the specific situation aware zone exists;
Receiving from the central server information about a specific local server pre-allocated to manage the specific situation awareness area among a plurality of local servers; And
And disconnecting from the central server after being connected to the specific local server based on the information about the specific local server,
Wherein the step of determining includes updating the location information each time the location information of the client is received from the GPS in the client, and based on the information on the plurality of context-aware areas collected in the client and the updated location information, However,
The specific situation awareness area may include:
A virtual area set in an arbitrary geographical area allocated to the specific local server,
Wherein the specific local server receives location information of the administrator terminal from an administrator terminal having authority to manage the specific situation awareness area at at least three different points, And defining a geometric shape made up of other points as the specific situation awareness area.
16. The method of claim 15,
Generating a connection request signal for connection with the central server corresponding to an execution signal for executing a specific application or a specific program of the client; And
And transmitting the connection request signal until the connection is made with the central server.
16. The method of claim 15,
Receiving information on a business server determined by the connection server according to a predetermined algorithm among a plurality of business servers in the central server while being connected to the connection server in the central server; And
Further comprising the step of transmitting information on the determined business server and disconnecting the connection with the connection server after being connected to the determined business server,
Wherein the step of determining includes determining whether the specific context aware area exists in a state of being connected to the determined business server,
Wherein the transmitting step transmits information on the specific situation awareness area to the determined business server,
Wherein the receiving step receives information on the specific local server from the determined business server.
18. The method of claim 17,
Wherein the determining comprises receiving information on a plurality of context-aware regions from the determined business server or determining based on information on a plurality of context-aware regions previously stored in the client.
16. The method of claim 15,
Determining whether the client is out of the specific situation area in a state of being connected to the specific local server; And
And disconnecting the connection with the specific local server and reconnecting with the central server when the user leaves the specific situation aware area.
delete

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