KR100717825B1 - Call Connection Method Using Ubiquitous Sensor Network - Google Patents

Abstract

1. TECHNICAL FIELD OF THE INVENTION

The present invention relates to a call connection method using a ubiquitous sensor network.

2. The technical problem to be solved by the invention

The present invention determines the location and situation of the subscriber (recipient) by using the ubiquitous sensor network location recognition technology and situational awareness technology when a call is made to the subscriber (recipient), thereby providing a call transfer or / and message service. And to provide a call connection method using a ubiquitous sensor network to increase the work efficiency in buildings and the like.

3. Summary of Solution to Invention

According to the present invention, in a call connection method using a ubiquitous sensor network, location information and situation information of a subscriber (called party) can be obtained by using a change in radio wave strength and transmission / reception time difference generated in communication between sensor nodes provided in the ubiquitous sensor network. Collecting / storing / updating / managing; As the call is incoming to the subscriber (called party), whether the call is forwarded to the called party's called number according to the stored location information and the situation information of the subscriber (called party), or the call is transferred to another called number of the subscriber. Or a decision step of determining (determining) whether to notify by using a message service without receiving a call when the subscriber (called party) is in a specific location where a call cannot be received; And a call connection step of connecting a call to the subscriber according to the determined call connection method.

4. Important uses of the invention

The invention is used in communication systems and the like.

Call connection, ubiquitous sensor network, location-aware technology, context-aware technology, location and situation information of subscriber, message service

Description

Method of call connection using ubiquitous sensor network {Method of call transfer using ubiquitous sensor network}

1A and 1B are diagrams illustrating an embodiment of a call connection method in a general telephone network;

2 is a schematic configuration diagram of a ubiquitous sensor network used in the present invention;

3 is a flowchart illustrating a method of transmitting information collected by a sensor node of FIG. 2 to a server;

4 is a flowchart illustrating a call connection method using a ubiquitous sensor network according to the present invention;

5A to 5C are detailed flowcharts of an embodiment of a call connection method using a ubiquitous sensor network according to the present invention.

* Explanation of symbols for the main parts of the drawings

11: exchange 20: ubiquitous sensor network

21: sensor node 22: sink node

23: gateway 24: broadband integrated network (IP based network)

25 server 26 telephone network

The present invention relates to a call connection method using a ubiquitous sensor network, and more particularly, to implement a smart office / building using a ubiquitous sensor network, a call made to a subscriber (recipient) by using a ubiquitous sensor network. Ubiquitous sensor to determine the location of the called party and determine whether or not it is possible to answer the call and to increase the work efficiency in smart offices and buildings by providing a message service appropriate to the call transfer and / or situation according to the location. The present invention relates to a call connection method using a network.

1A and 1B are diagrams illustrating an embodiment of a call connection method in a general telephone network.

First, as shown in FIG. 1A, when the caller 11 makes a call (1), the switch 12 calls the call according to the called number (2).

However, in general, when the called party and the telephone terminal are not together, there is a case where a call cannot be received, and in order to compensate for this, the switch 12 provides various services. For example, if the subscriber does not answer the phone while the called party rings several times, the exchange 12 determines that the called party (subscriber) is absent (3) and the mobile phone of the called party 13 A method of transferring a call to another telephone terminal, including the one used (4).

On the other hand, as shown in FIG. 1B, when the caller 11 makes a call (5), the switch 12 unconditionally switches the call to the cellular phone of the called party 13 (6), and the called party 13 ), There is a method of receiving a call (7).

As such, a service related to a call provided by an existing exchange or / and an intelligent network may be identified at the time of not receiving a call (see FIG. 1A), or the caller may be called regardless of the absence of the called party. Is directly switching to a terminal (for example, a mobile phone) that can be directly received (see FIG. 1B).

The conventional call transfer method as described above is a method of switching a call without recognizing the situation of the called party including the called party's location. Inconvenience of having to make a call transfer request to another destination terminal when it is located away from the destination terminal, and incompatibility of work may occur by having to answer the phone when it is difficult to answer the call, such as during a meeting.

The present invention has been proposed to solve the above problems, and when a call is made to a subscriber (recipient), call location is determined by determining the location and situation of the subscriber (recipient) using location recognition technology and situation recognition technology of the ubiquitous sensor network. The purpose of the present invention is to provide a call connection method using a ubiquitous sensor network to increase work efficiency in a smart office and a building by providing a message service.

That is, the present invention uses the ubiquitous sensor network location recognition technology and situational awareness technology, and combines the call transfer service and / and message services (short message service and multimedia message service) provided by the existing telephone network, ubiquitous sensor network The purpose of the present invention is to provide a call connection method using a ubiquitous sensor network to increase work efficiency in a smart building / office.

Other objects and advantages of the present invention can be understood by the following description, and will be more clearly understood by the embodiments of the present invention. Also, it will be readily appreciated that the objects and advantages of the present invention may be realized by the means and combinations thereof indicated in the claims.

The method of the present invention for achieving the above object, in the call connection method using a ubiquitous sensor network, a subscriber (recipient) by using a change in the radio wave strength and the transmission and reception time difference generated in the communication between the sensor nodes provided in the ubiquitous sensor network Collecting / storing / updating / managing location information and situation information of the server; As the call is incoming to the subscriber (called party), whether the call is forwarded to the called party's called number according to the stored location information and the situation information of the subscriber (called party), or the call is transferred to another called number of the subscriber. Or a decision step of determining (determining) whether to notify by using a message service without receiving a call when the subscriber (called party) is in a specific location where a call cannot be received; And a call connection step of connecting a call to the subscriber according to the determined call connection method.

As described above, the present invention implements a smart office and a building using a ubiquitous sensor network, and when a call comes in to a subscriber's seat, the subscriber uses the subscriber's location transformation information collected using the ubiquitous sensor network. By recognizing the location of the subscriber and the situation of the subscriber to provide a message service according to the call transfer or / and the situation, and if necessary send an announcement to the caller, it is possible to increase the work efficiency in smart offices and buildings.

The above objects, features and advantages will become more apparent from the following detailed description taken in conjunction with the accompanying drawings, whereby those skilled in the art may easily implement the technical idea of the present invention. There will be. In addition, in describing the present invention, when it is determined that the detailed description of the known technology related to the present invention may unnecessarily obscure the gist of the present invention, the detailed description thereof will be omitted. Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

2 is a schematic diagram of a ubiquitous sensor network used in the present invention.

As shown in FIG. 1, the ubiquitous sensor network 20 is a kind of ad-hoc network, and includes sensor nodes 21 and sink nodes 22 for a specific purpose. Information collected through the sensor nodes 21 and the sink node 22 is provided to the user. In this case, the collected information may be provided to the user through, for example, an IP (Internet Protocol) -based network (for example, a broadband integrated network (BcN)) 24, and through the gateway 23.

In order to provide various application services based on the ubiquitous sensor network, the server 25 is required. In addition, the sensor node 21 has a sensing function for sensing peripheral information, a transmission function for delivering it to another sensor node, and a reception function for receiving information transmitted from another sensor node.

Although not shown in FIG. 1, a gateway corresponding to the existing wired and wireless telephone network 26 and the IP-based network 24 should exist.

3 is a flowchart illustrating a method of transmitting information collected by a sensor node of FIG. 2 to a server.

As shown in FIG. 3, the sensor node 1 of the ubiquitous sensor network 20 can collect the corresponding sensor for each type of sensor such as ambient temperature, humidity, gas concentration, etc. using a sensor mounted in the node. Collect information (31).

Thereafter, the collected sensing information is transmitted to the sink node 22 through several sensor nodes 32 and 33.

Then, the sink node 22 transmits the received sensing information to the gateway 23 (34), and the gateway 23 transmits the received sensing information to the server 25 (35).

Then, the server 25 may store the received sensing information, and then process the stored sensing information and apply it to various application services.

4 is a flowchart illustrating a call connection method using a ubiquitous sensor network according to the present invention.

First, the sensor node 21 attached to an individual (subscriber) or a portable device of the subscriber or portable by the subscriber recognizes the location of the called party (subscriber) and transmits the corresponding location information through the ubiquitous sensor network 20 through the gateway ( 23) (41).

Then, the gateway 23 transmits the location information of the called party to the server 25, and the server 25 stores the received called party location information (42).

As described above, the process of collecting the receiver's location information 41 and the process of storing the collected recipient's location information 42 are performed whenever the location of the called party is changed, and thus stored in the server 25. The called party location information is always updated with the latest information.

As described above, when the caller makes a call and the call is incoming to the switch 11 (43), the switch 11 is the server 25 in which the receiver's location information is stored. Request a call forwarding method, and accordingly, the server 25 sends the call to the called number based on the called party's location information, transfers the call to another called number, or sends the call to a specific location where the called party cannot receive the call. Therefore, it is determined (not determined) to notify the exchange 11 using the message service instead of the incoming call and informs the exchange 11 (44).

The exchange 11 receiving the response then forwards the call according to the received information (45) or transfers the call to another called number (46). In addition, according to the location and situation of the called party when the call is not answered through the message service that the call came (47).

On the other hand, when providing a message service as described above to the called party, it may additionally inform the caller in a variety of ways, including announcements (48).

5A to 5C are detailed flowcharts of an embodiment of a call connection method using a ubiquitous sensor network according to the present invention. FIG. 5A is a detailed operation flowchart of a sensor node, FIG. 5B is a detailed operation flowchart of a server, and FIG. 5C. Is a detailed operation flowchart of the exchange.

First, referring to FIG. 5A, the operation of the sensor node detects that the sensor node 21 has changed its position by using changes in radio wave strength and transmission / reception time difference generated in communication with other sensor nodes in the vicinity. As a result (51), the result (including the location information of the called party) is transmitted to the corresponding server 25 (52).

Next, referring to FIG. 5B, the server 25 receives the location change data message (including the called party's location information) transmitted from the sensor node 21 (53). Accordingly, the server 25 stores / updates the position change data (the receiver's position information) included in the message received in the database (54), and changes the sensor node based on the position change data (the receiver's position information). The association between each data is managed to grasp the location and the situation of the user having the sensor node (for example, when a specific sensor node is detected, it is recognized as a conference room).

On the other hand, the server 25 receives a message from the switchboard 11 to the subscriber, that is, a call connection request message (56). Accordingly, the server 25 reads (57) the location information and the status information of the stored / updated called party (subscriber) from the database. Subsequently, whether to connect the call to the called party (subscriber) using the location information and the situation information of the called party (subscriber), or to transfer the call according to the subscriber's location, or the situation where the subscriber's situation cannot receive a call Therefore, it determines whether to provide a message service (58), and informs the result (call connection method) to the exchange 11 in response (59).

Next, referring to FIG. 5C, the operation of the switchboard, the switch 11 receives a message indicating that a call is received from another switchboard (or caller's terminal) (60). Accordingly, the exchange 11 requests the call connection method to the server 25 to know the call connection method (61), and receives the call connection method from the server 25 (62). Accordingly, the exchange 11 may interpret the answered call connection scheme (63) to proceed with the call according to the result (64), to divert the call to the most appropriate place for the subscriber location (65), When the call is not answered, it may leave a message service to notify that there is an incoming call (66). In addition, if necessary, the caller may be notified that the subscriber (the called party) has not received a call and has provided a message service by using an announcement broadcast or the like (67).

In the above-described embodiment, the communication between the switch 11 and the server 25 is performed through an IP-based network (BcN) 25, and thus, through a corresponding gateway (not shown). Do. In order to provide a message service, a terminal of a called number must be a terminal capable of providing a message service, and the message service includes a short message service and a multimedia message service. Sending announcements to the caller can also be provided by IP (Intelligent Peripheral) in the telephone network. All of these techniques are well known techniques and will not be described herein in detail any further.

As described above, the method of the present invention may be implemented as a program and stored in a recording medium (CD-ROM, ROM, RAM, floppy disk, hard disk, magneto-optical disk, etc.) in a computer-readable form. Since this process can be easily implemented by those skilled in the art will not be described in more detail.

The present invention described above is capable of various substitutions, modifications, and changes without departing from the technical spirit of the present invention for those skilled in the art to which the present invention pertains. It is not limited by the drawings.

As described above, the present invention relates to a technology for providing call switching and message services by interworking a telephone network including a ubiquitous sensor network, a wired telephone network, and a mobile communication network, and recognizing the location of a ubiquitous sensor network when a call is made to a subscriber (called party). By determining the location and the situation of the subscriber by using the technology and the situation awareness technology, by providing a call transfer or / and message service according to the result, there is an effect that can increase the efficiency of the work.

That is, the present invention uses the location recognition technology and the situation awareness technology, which is one of the core technologies of the ubiquitous sensor network, and combines call transfer service and message service (short message service and multimedia message service) provided by the existing telephone network. Inefficiency that the caller must hear when they are talking in another location and be at their seats, and the inconvenience of having to request to transfer to another destination terminal when they are away from the destination terminal, and answering the call, such as during a meeting. By reducing the inefficiency of the work caused by answering the phone when it is difficult, it is possible to increase the work efficiency in smart buildings and offices using the ubiquitous sensor network.

Claims (3)

In the call connection method using a ubiquitous sensor network, Collecting / storing / updating / managing location information and situation information of a subscriber (recipient) using a change in radio wave strength and transmission / reception time difference generated in communication between sensor nodes provided in the ubiquitous sensor network; As the call is incoming to the subscriber (called party), whether the call is forwarded to the called party's called number according to the stored location information and the situation information of the subscriber (called party), or the call is transferred to another called number of the subscriber. Or a decision step of determining (determining) whether to notify by using a message service without receiving a call when the subscriber (called party) is in a specific location where a call cannot be received; And Call connection step of connecting a call to the subscriber according to the determined call connection method Call connection method using a ubiquitous sensor network comprising a. The method of claim 1, The call connection step, Depending on the call connection method determined in the determination step, the call from the subscriber can be forwarded to the called party's called number, the call is transferred to another called party's other called number, or the subscriber (called party) can answer the call. Method for connecting a call using a ubiquitous sensor network, characterized in that the notification using a message service without receiving a call as it is in a specific location. The method of claim 2, Informing the caller of the corresponding call to the caller of the call by using the announcement, as the notification of the call from the subscriber. Call connection method using a ubiquitous sensor network further comprising.

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