KR20100040403A - System and method for setting call in boundary area of switching center - Google Patents
System and method for setting call in boundary area of switching center Download PDFInfo
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- KR20100040403A KR20100040403A KR1020080099486A KR20080099486A KR20100040403A KR 20100040403 A KR20100040403 A KR 20100040403A KR 1020080099486 A KR1020080099486 A KR 1020080099486A KR 20080099486 A KR20080099486 A KR 20080099486A KR 20100040403 A KR20100040403 A KR 20100040403A
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Abstract
Description
The present invention relates to a system and method for call establishment in an exchange boundary area. More particularly, the present invention relates to a system and a method for setting up a call at a switch boundary area. When the location registration information deletion message is received, the neighbor exchange address information is transmitted to the originating exchange, and when the call setup completion message is received from the originating exchange, the location registration information of the called terminal is deleted by deleting the location registration information of the called terminal. Switching paging where the calling / receiving subscriber can receive voice / video service without failing to connect the call even while the called terminal moves to the switching boundary area by performing incoming paging at the exchange before moving and performing a call connection to the new exchange. Regarding systems and methods for call setup in a region It is.
A wireless communication network system such as a mobile communication network adopts a compact mobile terminal for easy carrying and moving so that a user can make voice calls and data communication with the other party while moving. This is in addition to the basic voice call and data communication functions. It is equipped with various optional functions to meet the needs of terminal users.
In a wireless communication network system, a mobile communication switch that manages a current communication area of each mobile terminal and a home location register that stores and manages information of a terminal subscriber who has subscribed to the mobile communication service and location information of the terminal. By checking the location of each mobile terminal, handover is possible from the area controlled by a specific mobile communication switch to the area of the other mobile communication switch in a voice call state with a call connection and a call connection. have.
In order to receive a voice / video service, the mobile subscriber must manage the location information of the subscriber and whether the subscriber can provide the service in a communication network. One signaling processor for collecting such information is called paging.
However, in the conventional mobile phone service as described above, when the called terminal subscriber moves to the exchange boundary area and enters a new exchange area, the location registration procedure to the new exchange and the call setup procedure from the originating terminal are simultaneously generated. When the request for deleting the location registration information of the previous exchange occurs, the paging procedure is performed to the exchange before the movement, resulting in a paging reception failure and consequently a call connection failure.
In addition, the subscriber's location information is managed through one exchange, and if the subscriber leaves the area of the exchange, a procedure for changing and registering location information is performed, and if a call attempt is made from another subscriber while this procedure is performed, In the process, the call connection failed due to the failure of the incoming paging because the exchange could not perform the call connection procedure including paging.
The present invention has been proposed to solve the problems of the prior art as described above, and an object of the present invention is to improve a call connection failure phenomenon caused by a failure in paging reception during location registration when the called terminal is located in an exchange boundary area. It is to provide a system and method for call establishment in the exchange boundary area.
It is another object of the present invention to perform a paging procedure at a pre-mobile exchange and to perform a call connection using a pre-mobile exchange using the exchange number transmitted to the pre-mobile through a location registration procedure to a new exchange, thereby failing to receive a paging. The present invention provides a system and method for call establishment in an exchange boundary area where a call connection can be successful without a connection.
It is still another object of the present invention to perform incoming paging at a pre-mobile exchange and to perform a call connection to a new exchange even during a procedure of changing location information. The present invention provides a system and method for call establishment in an exchange boundary area where a called subscriber can receive voice / video service.
According to an aspect of the present invention to achieve the above objects, the first destination exchange requests the call processing in response to the call origination from the originating terminal, the neighbor exchange when the neighbor exchange address information is received from the first destination exchange An originating exchange which broadcasts a call processing request message to an exchange corresponding to an address, establishes a call path with the exchange that has transmitted a call response message, and transmits a call setup completion message to the first destination exchange; a call from the originating exchange When a location registration information deletion message is received from a home location register while paging a called terminal according to a processing request, neighbor exchange address information is transmitted to the calling exchange, and when a call setup completion message is received from the calling exchange, the called terminal. A bridge comprising a first destination exchange to delete the location registration information of the A system for call setup in the Boundary area is provided.
When the terminating terminal enters its own area out of the first terminating exchange area while being paged by the first terminating exchange, transmits a location registration request message to a home location register, and receives a call processing request message from the originating exchange. If the paging response is received by paging the destination terminal when the call is received, the system for call setup further comprises a second destination exchange for sending a call response message to the originating exchange.
The originating exchange releases the session associated with another adjacent exchange except the exchange that sent the call response message.
The exchange transmitting the call response message is a second destination exchange in which the called terminal moves out of the first destination exchange area.
The first destination exchange receives address information from a plurality of neighbor exchanges by broadcasting a switch address request message when a location registration information deletion message is received from the originating exchange, and receives the received plurality of neighbor exchange address information. Send to originating exchange.
When a location registration information deletion message is received from the originating exchange, the first destination exchange extracts neighboring exchange address information by searching a database provided therein, and transmits the extracted neighbor exchange address information to the originating exchange.
According to another aspect of the present invention, (a) when a location registration information deletion message is received from the home location register while the first destination exchange is paging the called terminal according to a call processing request from the originating exchange, Extracting neighbor exchange address information and transmitting the extracted neighbor exchange address information to the originating exchange; (b) requesting a call processing to an exchange corresponding to the neighbor exchange address when the neighbor exchange address information is received from the originating exchange; Setting a call path with an exchange that has transmitted a call response message by broadcasting a message, and transmitting a call setup completion message to the first destination exchange, (c) the first destination exchange completes call setup from the originating exchange Deleting the location registration information of the called terminal when a message is received; A method for call setup in a ventilated area boundary is provided.
In step (a), the home location register transmits a location registration information deletion message to the first destination exchange when the location registration request message is received from the switch exchanged by the destination terminal.
In step (b), the originating exchange broadcasts a call processing request message including called terminal identification information to an exchange corresponding to an adjacent exchange address, wherein each exchange receives the broadcasted call processing request message. Paging the destination terminal included in the message, the exchange receiving the paging response from the destination terminal, transmitting a call response message to the originating exchange, and the originating exchange communicates with the exchange that transmitted the call response message Setting a path and transmitting a call setup completion message to the first destination exchange.
In step (b), the originating exchange releases an ongoing session with another exchange except the exchange that sent the call response message.
According to another aspect of the present invention, (a) when a location registration information deletion message is received from a home location register while the first destination exchange is paging a called terminal according to a call processing request from an originating exchange, an exchange address request message is sent. Broadcasting; (b) the first destination exchange receives address information from a plurality of neighbor exchanges and transmits the address information to the originating exchange; (c) the originating exchange receives neighbor exchange address information from the first destination exchange. In one case, the call processing request message is broadcast to the exchange corresponding to the adjacent exchange address to establish a communication path with the exchange that has transmitted the call response message, and transmits a call setup completion message to the first destination exchange, (d) When the first destination exchange receives a call setup completion message from the originating exchange, A method is provided for call establishment at an exchange boundary area, the method comprising deleting device registration information.
Each exchange receiving the exchange address request message from the first destination exchange transmits its own address information to the first destination exchange.
As described above, according to the present invention, a system and method for call establishment in an exchange boundary area that can improve a call connection failure caused by a failure in paging reception during location registration when the called terminal is located in the exchange boundary area. Can be provided.
In addition, the incoming paging procedure is performed at the pre-mobile exchange, and the pre-mobile exchange performs call connection using the exchange number passed to the pre-mobile exchange through the location registration procedure to the new exchange. It is possible to provide a system and method for call establishment at a switch boundary area that can be successful.
In addition, during the procedure of changing the location information, the incoming / outgoing subscriber performs voice paging and transfers the call to the new exchange. It is possible to provide a system and method for call establishment in an exchange boundary area that can be provided with video service.
Details of the above-described objects and technical configurations of the present invention and the effects thereof according to the present invention will be more clearly understood by the following detailed description based on the accompanying drawings.
1 is a diagram illustrating a system for call setup at an exchange boundary area according to the present invention.
Referring to FIG. 1, a system for call setup in an exchange boundary area performs call processing according to call origination from the
The calling terminal and the called
It will be described on the assumption that the
The
The originating and terminating exchange (120, 130a, 130b) performs the function of the incoming / outgoing call processing of the mobile terminal subscriber, and performs the location registration procedure and handover procedure of the terminal through the
For the exchange as described above will be described in more detail by classifying into the
The originating
Here, the adjacent exchange address information is the address of the exchange adjacent to the
When the
Then, a call path is established between the
The
When the
In addition, neighbor exchange address information is prestored in the
The
The
As described above, the paging is performed at the pre-mobile exchange even during the procedure of changing the location information, and the call connection is performed at the new exchange. As a result, the calling terminal and the terminating terminal without failure of the call connection even while the called subscriber moves to the exchange boundary area. Voice or video services can be provided.
2 is a diagram illustrating a call setup method in an exchange boundary area according to an embodiment of the present invention.
Hereinafter, it will be described on the assumption that the called terminal moves from the first destination exchange area to the second destination exchange area.
Referring to FIG. 2, the originating exchange transmits a call processing request message to the first destination exchange according to call origination from the originating terminal (S200). The call processing request message includes source terminal identification information, called terminal identification information, originating exchange identification information, and the like.
That is, when the originating terminal originates a call, the originating exchange requests the subscriber location information (location information and additional service information) of the originating and destination terminal to the home location register.
Then, the home location register requests the incoming routing to the first destination exchange, receives the incoming routing information from the first destination exchange, and sends the incoming routing information received from the first destination exchange to the originating exchange. Then, the originating exchange transmits a call processing request message including caller information and called party information to the first destination exchange by using the incoming routing information.
The first destination exchange pages the destination terminal according to the call processing request message (S202).
If the destination terminal moves to the second destination exchange area and the second destination exchange transmits a location registration request message to a home location register while paging the destination terminal as in step S202 (S204), the home location register is the same. The location registration information deletion message is transmitted to the first destination exchange (S206). The location registration information deletion message includes the called terminal identification information.
Then, the first destination exchange retrieves the provided database, extracts the adjacent exchange address information in contact with itself, and transmits the information to the originating exchange (S208).
That is, when the location registration information deletion message is received from the home location register, the first destination exchange does not immediately delete location registration information of the destination terminal registered in the visited subscriber location register. Since the location registration information is deleted after the call setup of the destination exchange period is completed, the originating exchange transmits a plurality of adjacent exchange address information adjacent to the originating exchange so that the originating exchange can find information about the second destination exchange.
When the neighbor exchange address information is received from the first destination exchange at the originating exchange, the originating exchange broadcasts a call processing request message to the exchange corresponding to the neighbor exchange address (S210). The call processing request message includes the calling exchange identification information, the calling terminal identification information, the called terminal identification information, and the like.
Each exchange that receives the call processing request message broadcast by the originating exchange pages the destination terminal included in the message. However, since there is only one called terminal, there is only one exchange that receives a response to paging.
The second destination exchange that receives the paging response from the destination terminal sends a call response message to the originating exchange.
When the call exchange message is received (S212), the call exchanger establishes a call path with the second destination exchange that transmitted the call response message (S214), and transmits a call setup completion message to the first destination exchange (S216). ). At this time, the originating exchange releases an ongoing call with another exchange except the second terminating exchange which transmitted the call response message.
The first destination exchange deletes the location registration information of the destination terminal when a call setup completion message is received (S218). That is, when the call establishment completion message is received from the originating exchange, the first destination exchange deletes the location registration information for the called terminal registered in the visited subscriber location register.
3 is a diagram illustrating a call setup method in an exchange boundary area according to another embodiment of the present invention.
Referring to FIG. 3, the originating exchange transmits a call processing request message to the first destination exchange according to call origination from the originating terminal (S300).
The called exchange pages the called terminal according to the call processing request message (S302).
When the destination terminal moves to a second destination exchange and the second destination exchange transmits a location registration request message to a home location register while paging the destination terminal as in step S302 (S304), the home location register is the first destination. 1, the location registration information deletion message is transmitted to the destination exchange (S306).
Then, the first destination exchange broadcasts an exchange address request message in order to know the destination exchange information moved by the destination terminal (S308). The exchange address request message includes first destination exchange address information.
When the first destination exchange broadcasts an exchange address request message, the exchange address request message is transmitted to a plurality of exchanges adjacent to the first destination terminal.
Each exchange receiving the exchange address request message extracts its address information and transmits it to the first destination exchange.
When the address information is received from a plurality of neighbor exchanges (S310), the first destination exchange transmits the received neighbor exchange address information to the originating exchange (S312). That is, when the location registration information deletion message is received from the home location register, the first destination exchange does not immediately delete location registration information of the destination terminal registered in the visited subscriber location register. Since the location registration information is deleted after the call setup of the destination exchange period is completed, the originating exchange transmits a plurality of adjacent exchange address information adjacent to the originating exchange so that the originating exchange can find information about the second destination exchange.
When the neighbor exchange address information is received from the first destination exchange at the originating exchange, the originating exchange broadcasts a call processing request message to the exchange corresponding to the neighbor exchange address (S314). The call processing request message includes the calling exchange identification information, the calling terminal identification information, the called terminal identification information, and the like.
Each exchange that receives the call processing request message broadcast by the originating exchange pages the destination terminal included in the message. However, since there is only one called terminal, there is only one exchange that receives a response to paging.
The second destination exchange that receives the paging response from the destination terminal sends a call response message to the originating exchange.
When the call exchange message is received (S316), the call exchanger establishes a call path with the second destination exchange that transmitted the call response message (S318), and transmits a call setup completion message to the first destination exchange (S320). ). At this time, the originating exchange releases an ongoing call with another exchange except the second terminating exchange which transmitted the call response message.
The first destination exchange deletes the location registration information of the destination terminal when a call setup completion message is received (S322). That is, when the call establishment completion message is received from the originating exchange, the first destination exchange deletes the location registration information for the called terminal registered in the visited subscriber location register.
As such, those skilled in the art will appreciate that the present invention can be implemented in other specific forms without changing the technical spirit or essential features thereof. Therefore, the above-described embodiments are to be understood as illustrative in all respects and not as restrictive. The scope of the present invention is shown by the following claims rather than the detailed description, and all changes or modifications derived from the meaning and scope of the claims and their equivalents should be construed as being included in the scope of the present invention. do.
As described above, a system and method for call establishment in an exchange boundary area according to the present invention performs a destination paging at an exchange before moving and performs a call connection to a new exchange even during a procedure for changing location information. Even if it is mobile, it can be used for a technology that can provide a voice / video service without failing a call connection.
1 is a diagram illustrating a system for call setup at an exchange boundary area according to the present invention.
2 and 3 are diagrams illustrating a call setup method in an exchange boundary area according to an embodiment of the present invention.
<Explanation of symbols for the main parts of the drawings>
100: mobile terminal 110: home location register
120: outgoing exchange 130: incoming exchange
Claims (12)
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| Application Number | Priority Date | Filing Date | Title |
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| KR1020080099486A KR101495222B1 (en) | 2008-10-10 | 2008-10-10 | System and Method for setting call in boundary area of switching center |
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| KR1020080099486A KR101495222B1 (en) | 2008-10-10 | 2008-10-10 | System and Method for setting call in boundary area of switching center |
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| KR20100040403A true KR20100040403A (en) | 2010-04-20 |
| KR101495222B1 KR101495222B1 (en) | 2015-03-02 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| KR20120046382A (en) * | 2010-11-02 | 2012-05-10 | 에스케이 텔레콤주식회사 | System and method for serving a voice call in a mobile communicaiton system |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100424446B1 (en) * | 2001-06-25 | 2004-03-25 | 에스케이 텔레콤주식회사 | Method for multi-paging using a home location register |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| KR20120046382A (en) * | 2010-11-02 | 2012-05-10 | 에스케이 텔레콤주식회사 | System and method for serving a voice call in a mobile communicaiton system |
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