KR101038169B1

KR101038169B1 - Method for processing terminating call of mobile station in boundary area of mobile communication system

Info

Publication number: KR101038169B1
Application number: KR1020040063064A
Authority: KR
Inventors: 박영민
Original assignee: 에스케이 텔레콤주식회사
Priority date: 2004-08-11
Filing date: 2004-08-11
Publication date: 2011-05-31
Also published as: KR20060014507A

Abstract

The present invention relates to a method for processing an incoming call of a mobile terminal in a boundary area of a mobile communication system. In particular, a paging event is generated just before a mobile terminal moves to another cell in a boundary area of a mobile communication system. The present invention relates to an incoming call processing technology of a mobile terminal which has been improved in that it is impossible to receive a call.

According to the present invention, a paging event occurs in a boundary area based on a mobile communication system composed of an originating / receiving terminal (MS), an originating exchange (MSC) / terminating exchange A, B (MSC), and a home location register (HLR). In the incoming call processing method, the home location register (HLR) when the receiving terminal processes the incoming call to the destination terminal within a certain time after the home terminal registration request location registration according to the system change to the home location register (HLR) The mobile terminal is characterized by performing a location registration and relocation request for a called terminal at the registrar (HLR), and performing an incoming call processing (TLDN) once again to an originating exchange (MSC) that requested the incoming processing immediately before. It suggests how to handle incoming calls.

Mobile communication system, boundary area, incoming call, paging, event

Description

Method for processing terminating call of mobile station in boundary area of mobile communication system

1 is a flowchart illustrating an incoming call processing process of a mobile station in a boundary area of a mobile communication system according to the related art.

2 is a flowchart illustrating an incoming call processing process of a mobile station in a boundary area of a mobile communication system according to the present invention.

The present invention relates to a method of processing an incoming call of a mobile terminal in a boundary area of a mobile communication system. More specifically, the mobile terminal's incoming call processing technology has been improved in that a paging event occurs just before the mobile terminal moves to another cell in the boundary area of the mobile communication system. It is about.

The mobile subscriber performs location registration of the subscriber station in order to notify the mobile communication system of information such as its location and status so that the paging can be effectively performed.

The mobile communication system manages the location information of the subscriber station using the location area identification number, and the location area identification number is also used as the information of the paging area.

Here, paging refers to a function of requesting paging to a subscriber terminal according to the information registered in the home location register (HLR) when the incoming signal for calling the mobile subscriber occurs to inform the mobile subscriber terminal of the incoming call. Say

1 is a flowchart illustrating an incoming call processing process of a mobile communication terminal in a boundary area of a mobile communication system according to the related art.

The mobile communication system shown in FIG. 1 includes a mobile station (MS) for originating / receiving; Source / terminator A, B (Mobile Switching Center: MSC); And a Home Location Register (HLR).

In the call processing process of the mobile communication system configured as described above, when the originating terminal (MS) attempts a call (Origination Msg) (S11), the originating exchange (MSC) to determine the location of the called subscriber (LOCREQ) home location register (HLR) requests the location of the called terminal (S12).

Then, the home location register (HLR) receiving the location request has requested routing information (ROUTREQ) for the called party to the destination exchanger A (MSC) and received it (S13 ~ S14), and then the originating exchange (MSC). Routing information (Temporary? Local? Directory? Number: TLDN) is transmitted (S15).

Thereafter, the originating exchange (MSC) establishes a call using the transferred routing information (TLDN) (S16).

At this time, when a paging event occurs immediately before the destination MS moves to the boundary area of the mobile communication system, 5.12 seconds or 2.56 seconds paging according to the slot cycle index (SCI). Maintain the standby state.

In that state, the terminating terminal (MS) requests registration of the location to the destination exchange B (MSC) (S17), and the destination exchange B (MSC) delivers a location registration message to the home location register (HLR) according to the system movement. The result is delivered to the destination exchanger B (MSC) (S18 ~ S19).

At this time, the destination exchange A (MSC) transmits a paging message (Paging Message) to the destination terminal (MS) in the slot (S20).

However, the called terminal may not receive a paging message because it is moved to the called exchange B (MSC).

As described above, the slot cycle index (SCI) when a paging event occurs for the called terminal immediately before the movement (MSC A-> MSC B) (5.12 seconds or 2.56 seconds according to the SCI) of the mobile communication system. ) Can not be received.

Accordingly, the present invention is to solve the above problems, the present invention successfully handles the incoming call to the paging response of the terminal when a paging event occurs immediately before moving from the boundary area of the mobile communication system to another cell (Cell) The purpose is to make it.

As the technical idea for achieving the above object of the present invention

Incoming call processing method in which a paging event occurs in a boundary area based on a mobile communication system consisting of an originating / receiving terminal (MS), an originating exchange (MSC), a destination exchange A, B (MSC), and a home location register (HLR) To

If the called terminal requests location registration according to the system change to the home location register (HLR) within a predetermined time after the home location register (HLR) processes the location registration for the called terminal, the called terminal from the home location register (HLR) It performs location registration and re-location request for, and provides the incoming call processing method of the mobile terminal, characterized in that to perform the incoming call processing (TLDN) once again to the originating exchange (MSC) requesting the incoming call processing immediately before. .

Hereinafter, with reference to the accompanying drawings, the configuration and operation of the embodiment of the present invention will be described in detail.

2 is a flowchart illustrating an incoming call processing process of a mobile communication terminal in a boundary area of a mobile communication system according to the present invention.

The mobile communication system shown in FIG. 2 includes a mobile station (MS) for originating / receiving; Originating / receiving A, B switch (Mobile Switching Center (MSC)); And a Home Location Register (HLR).

The MS refers to a terminal such as a synchronous CDMA2000 and an asynchronous W-CDMA, and the MSC is connected to a base station controller (BSC) to establish a call of the MS. It performs release, etc., performs various functions related to call processing and additional services, and enables interworking with other networks.

The home location register (HLR) is a database storing information, location information, additional service information, etc. of a mobile subscriber (MS). The home location register (HLR) interacts with the switch (MSC) and transmits information regarding the location information of the mobile terminal (MS). Will be performed.

First, when the originating terminal (MS) attempts a call (Origination Msg) (S31), the originating exchange (MSC) determines the location of the called terminal with the home location register (HLR) to determine the location (LOCREQ) for the called party. Request (S32).

Then, the home location register (HLR) receiving the location request of the called terminal requests routing information (ROUTREQ, TLDN) for the called party to the called exchange A (MSC) (S33).

The destination exchange A (MSC) delivers routing information (routreq, TLDN) for this to the home location register (HLR) (S34), and the routing information (locreq, TLDN) from the home location register (HLR) to the originating exchange (MSC). ) Will be delivered (S35).

Thereafter, the originating exchange (MSC) establishes a call using the transferred routing information (TLDN) (S36).

In this state, the terminating terminal (MS) requests registration from the terminating exchange B (MSC) (S37).

Then, the destination exchange B (MSC) requests a location registration (REGNOT) to the home location register (HLR) as the system moves (S38), the home location register (HLR) receives a message (regnot) that the location registration is complete. It is delivered to the destination exchange B (MSC).

In addition, the home location register (HLR) checks whether the slot cycle index (SCI) has elapsed for a predetermined time, and if it is determined that the SCI time has not elapsed, a routing request for incoming processing to the destination exchange B (MSC). ), And it is delivered again (TLDN) and forwarded to the originating exchange (MSC) (S39 ~ S41).

That is, the home location register (HLR) performs a location registration (regnot) and additional incoming processing (ROUTREQ) for the destination terminal, and to the originating exchange (MSC) that requested the location (LOCREQ) for the incoming processing immediately before Once again, call processing (locreq, TLDN) is required.

Then, the originating exchange (MSC) processes call routing once again using the TLDN additionally allocated to the destination exchange B (MSC) (S42).

At this time, the destination exchange A (MSC) and the destination exchange B (MSC) delivers a paging message (Paging Message) to the destination terminal (MS), respectively, to the destination terminal (MS), and the paging (Paging) response of the destination terminal Call processing is successfully performed (S43 to S44).

As described above, according to the method for processing an incoming call of a mobile terminal in a boundary area of a mobile communication system according to the present invention, when a paging event occurs just before moving from the boundary area of the mobile communication system to another cell, You can successfully process the incoming call with a paging response.

That is, the call processing can be successfully processed by resetting the call processing according to the change of the location of the called terminal.

Claims

Incoming call processing method in which a paging event occurs in a boundary area based on a mobile communication system consisting of an originating / receiving terminal (MS), an originating exchange (MSC) / terminating exchange A, B (MSC), and a home location register (HLR) To

If the called terminal requests location registration to the home location register (HLR) through the destination exchange B within a predetermined time after the paging event for the called terminal through the destination exchange A, the home location register (HLR) for the destination terminal Performing location registration and re-incoming processing, and the incoming call processing method of the mobile terminal characterized in that to perform the incoming processing once again through the destination exchange B to the originating exchange (MSC) requesting the incoming processing for the called terminal; .

The method according to claim 1, wherein when the called terminal requests a location registration to the home location register (HLR) via the destination exchange B within a predetermined time, the call processing of the incoming call request processed immediately before is regarded as failed. Method of handling incoming call of mobile terminal.

The method according to claim 1, wherein after the incoming processing is performed once again by the originating exchange (MSC), the paging message is delivered to the corresponding terminal in the corresponding slot in the destination exchange A and the destination exchange B, respectively, Incoming call processing method of a mobile terminal, characterized in that the call processing is successfully performed by the paging response of the terminal.