KR20040055402A - Method Serving FA Service to Fixed Subscriber in Mobile Communication System - Google Patents

Abstract

PURPOSE: A method for providing FA(Flexible Alerting) service to a fixed line subscriber in a mobile communication system is provided to provide an FA supplementary service to a fixed subscriber as well as to a mobile subscriber. CONSTITUTION: A fixed subscriber requests call connection to a destination number from an originating switching center(512). The originating switching center requests referring to information on the destination number with respect to a home location registration station(514). The home location registration station determines whether the received destination number has been registered for FA service(516). If the destination number has not been registered for the FA service, the home location registration station requests information on a destination subscriber from switching centers(520). The home location registration station receives information on the destination subscriber and transmits it to the originating switching center(522). An FSC(Fixed Subscriber Control) of the originating switching center generates processes for connecting calls to destination subscribers as many as subscriber numbers of an FA group(524). Each process sends call connection information to serving mobile switching centers and waits for a response(526). The processes receive responses of destination subscribers(528). The FSC makes a ring-back tone(530). Each processor waits for destination subscribers to press a call button(532). Each processor of the FSC receives a response message from a serving mobile switching centers of a destination subscriber who presses the call button first(534). The remaining processors are all annihilated and call connection is released(536). The FSC transmits a call connection signal to the fixed subscriber(538) and call connection is made(540).

Description

Method for providing F service to fixed subscribers from mobile communication system {Method Serving FA Service to Fixed Subscriber in Mobile Communication System}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of flexible alerting (FA) service in a mobile communication system. In particular, the present invention relates to a mobile communication system for providing FA supplementary services to fixed subscribers or wired subscribers, as well as mobile subscribers. Communication system FA service providing method.

In general, a mobile communication system is a communication system that targets mobile devices such as people, cars, ships, trains, and airplanes, which includes key phone systems, mobile phones (mobile phones, vehicle phones), port phones, aircraft phones, and mobile phones. Trains, cruise ships, express buses), radio calling, radiotelephony, satellite mobile communication, amateur radio, and fishing service ships.

Such mobile communication systems include an AMPS (Advanced Mobile Phone Service) system using an analog method, a Code Division Multiple Access (CDMA) system using a digital method, and a Time Division Multiple Access (TDMA) system. , FDMA (Frequency Division Multiple Access) system, WLL (Wireless Local Loop), CDMA2000-1x, IMT2000 system.

1 is a block diagram of a general mobile communication system.

As shown in FIG. 1, a wireless management device (Base Station Management, BSM) 130 performing wireless operation of a mobile communication system and the wireless operation device 130 are connected to control a wireless link and a wired link. A base station controller (BSC) 120 which performs a handoff function to maintain the continuity of a call even while the subscriber is moving, and is connected to the wireless operation device 130, and the wireless section together with the mobile station 100. A base transceiver station (BTS) 110 that communicates using a protocol in a process for call connection to a called mobile station in response to a call establishment request from the base station 110 and the base station controller 120 A mobile switching center (MSC) 140 that performs the operation, and a database that stores and manages subscriber data, and performs subscriber location registration and subscriber information inquiry functions. It is configured to include the location registration station (Home Location Register) (150).

Flexible Alerting (FA) service is a service that branches to members designated as a group for a call received with a FA Pilot Subscriber Number (FA Pilot DN). Members in the group are simultaneously called using different ring tones, the call is routed to the first responding member, and the remaining call setup is released.

The authority to register / delete members in the group is owned by the FA pilot DN, and the service of the FA pilot DN takes precedence over the service of the member. Members in the group may be mobile stations in home location registries such as FA pilot DN and mobile stations in other home location registries and landline telephone numbers.

The FA service has a single user type and a multi user type according to a method of determining busy / idle of a designated group. The single user type determines that the entire group is busy if only one subscriber of the group members is busy, and the multi-user type determines that the entire group is busy only when all members in the group are busy.

2 is a schematic block diagram of a communication system for implementing a FA service function according to the prior art, and FIG. 3 is a flowchart illustrating a process of executing an FA additional service according to the prior art.

First, when the originating mobile station 200 makes a call setup request for call connection, the originating exchange 210 receives a call setup request number, that is, a called number, from the originating mobile station 200 (step 310).

In addition, the source switching center 210 requests the call processing information on the received called number to the home location registration station 220 (step 312).

The home location registration station 220 receiving the call processing information request from the originating exchange station 210 inquires whether the called number is a number registered with FA service (step 314).

As a result of the inquiry in step 314, when the called number is not a number registered in the FA service, the called number is immediately requested by the switching center located at the called number location and processed by a general call connection process (316). ).

As a result of the inquiry in step 314, when the called number is a registered number in the FA service, a called exchange station (recipient switching station 1 (230), called switching station 2 (240)) having all member (receiving subscriber) locations in the FA service group; In step 318, information on the called number is requested (ie, information on the called subscriber).

After performing step 318, the home location registration station 220 receives the called party call processing information from each destination switching station 230 and 240 and transmits it to the calling switching station 210 (step 320).

In step 320, the originating exchange station 210 receiving the called subscriber information from the home location registration station 220 performs a call connection attempt for each member in the FA group (step 322).

The call is connected only to the called number that is first responded to the call connection attempt of the calling exchange station 210, and the call is disconnected to the remaining called numbers (step 324).

However, the conventional mobile communication system FA service providing method has the following problems.

That is, the provision of FA services according to the prior art has been performed only for wireless subscribers, i.e., mobile terminals.

Therefore, there is a problem in that the FA service is not provided to a fixed subscriber or a fixed subscriber.

Here, the fixed subscriber refers to a subscriber that is directly connected to a switching center (MSC) without relaying a base station or a base station controller, and is a terminal device mainly used for testing a network system.

A wired subscriber is a terminal device directly connected to a wired switch office through a public switched telephone network (PSTN).

The present invention was created to solve the above problems of the prior art, and an object of the FA service providing method in a mobile communication system according to the present invention is to provide a FA service to a fixed subscriber or a wired subscriber as well as a wireless terminal. A method for providing FA service in a mobile communication system.

1 is a schematic block diagram of a general mobile communication system.

2 is a schematic block diagram of a communication system for providing FA service according to the prior art;

3 is a flow chart for providing a FA service according to the prior art.

4 is a schematic block diagram of a communication system for providing FA service according to the present invention;

5 is a flowchart for providing FA service according to the present invention.

Explanation of symbols on main parts of the drawing

100; Mobile station 110; Base station

120; Base station controller 130; Wireless operation device

140; Mobile switching centers 150, 220, 420; Home Location Registrar

200; Originating mobile station 210, 410; Calling exchange

230, 240, 430, 440; Recipient Exchange Bureau

232, 242, 432, 442; Recipient Mobile Bureau

252, 452; Wired subscriber

The present invention provides a method for providing a FA service to a fixed subscriber in the mobile communication system to achieve the above object, the first step that the fixed subscriber requests the call set-up to the originating exchange, and the originating exchange through the home location registration A second step of receiving incoming subscriber information; and a third step of attempting to connect by sending call connection information to all members in the flexible alerting group based on the called subscriber information received through the home location registration station; The fourth step is to perform call setup only for the best arrival response among the members in the FA group and release call setup for the remaining members.

In the present invention, a method for providing a FA service to a fixed subscriber in the mobile communication system, wherein the third step is performed by the originating switching center generating a processor for call connection to the called subscriber as many as the number of members of the FA group. It is done.

According to the configuration as described above, there is an advantage that can provide FA services to wired subscribers or fixed subscribers as well as wireless subscribers.

The following will be described in detail with reference to the accompanying drawings, a preferred embodiment of a method for providing FA service in the present invention mobile communication system.

4 is a schematic block diagram of a communication system for providing FA service according to the present invention.

As shown in FIG. 4, the terminal apparatus requesting call setup to the originating switching center 410 is a fixed subscriber 400 or a wired subscriber 401. The definition of the fixed subscriber or wired subscriber is as described above.

The fixed subscriber 400 or wired subscriber 401 (hereinafter, referred to as fixed subscriber 400 or wired subscriber 401 as fixed subscriber 400) may have an originating mobile switching center 410. Connected. The originating switching center 410 performs a call connection function with a called number for which the fixed subscriber 400 requests call setup.

In the method for providing a FA service to a fixed subscriber according to the present invention, the call connection to the called number for the call setup requested by the fixed subscriber 400 performed by the originating switching center 410 is performed by the calling switching station ( Performed in a Fixed Subscriber Control (FSC) (not shown) in 410. Hereinafter, the call setup function associated with the FA service performed by the originating switching center 410 according to the present invention is performed in an FSC (not shown).

In addition, there is a base station (not shown) and a base station controller (not shown) between the fixed subscriber 400 and the source switching station 410.

A home location registration station 420 is connected to the originating switching center 410. The home location registration station 420 is a database that stores and manages subscriber data. The home location registration station 420 performs a subscriber information inquiry when a subscriber's location registration and the originating switching center 410 request it.

The home location registration station 420 updates the location whenever the subscriber changes location and changes the switching station so that the home location registration station 420 is always in a standby state.

A serving mobile switching center (430, 440) is connected to the home location registration station (420). The destination exchange stations 430, 440 are exchange stations in the sector of the destination terminal. In addition, the destination mobile stations 432 and 442 are connected to the destination exchange stations 430 and 440, respectively.

In addition, since the member of the FA group may be a mobile terminal (MS) as well as a wired terminal, when the member of the FA group is a wired subscriber (452), the home location registration station (420). Is connected to a wired switch center (not shown) through the PSTN 450.

The following describes in detail the FA service providing process to a fixed subscriber according to the present invention in the communication system as described above.

5 is a flowchart for providing an FA service to a fixed subscriber or a wired subscriber according to the present invention.

First, the fixed subscriber 400 hooks off the handset and requests a call connection to the called number to the calling switching center 410 (step 512).

Receiving a call setup request from the fixed subscriber 400, the originating switching center 410 requests the home location registration station 420 to query information about the called number (step 514).

The home location registration station 420, which has received a request for information inquiry about the called number from the calling exchange 410, first determines whether the received called number is a number registered in the FA service (step 516).

As a result of the determination in step 516, if the received called number is not registered in the FA service, a general call setup process is performed (step 518).

As a result of the determination in step 516, when the received called number is registered in the FA service, the home location registration station 420 receives the called party at the switching stations 430 and 440 corresponding to the subscriber number of each member in the FA group. Information is requested (step 520).

The terminating exchange 430 that receives the request for the terminating subscriber information from the home location registration station 420 assigns a TLDN (Temporary Local Directory Number), that is, the terminating subscriber information such as its own exchange ID and the number of the terminating mobile station. Is transmitted to the home location registration station (420).

In operation 522, the home location registration station 420 which has received the called subscriber information from the called exchange station 430 transmits the received information to the calling exchange 410 as it is (step 522).

The FSC (not shown) of the originating exchange station 410 that has received the called party information from the home location registration station 420 is a called party (called mobile station 432, 442) or as many as the number of subscriber numbers (DN) in the FA group. The incoming wired subscriber 452, which is the same as hereinafter, is created] (step 524).

After performing step 524, each process transmits call connection information to the destination switching stations 430 and 440 (or wired switch stations in the case of a wired subscriber) for each process (step 526). .

Then, as many processes as the number of members of the FA group receive the responses of the called subscriber (the called mobile station 432, 442 or the called wired subscriber 452) (step 528).

At this time, the FSC (not shown) tells the ringback tone that the phone of the actual called party rings (step 530).

Then, each processor of the FSC (not shown) waits for the called subscriber to press the call button (step 532). Each processor of the FSC receives a response message sent from the destination switching station 430 or 440 (or a wired switching station (not shown in the case of a wired subscriber)) of the called subscriber who first pressed the call button (step 534).

Since only the called party who sent the first response message is set up, all other processes waiting for a call response except for the first subscriber who sent the response message are destroyed and the call is disconnected (step 536). This is because the members of the FA group should not be connected to the call except the called subscriber who is connected.

When the called subscriber first sends a response message as described above, the FSC transmits a call connection signal to the fixed subscriber 400 (step 538), and the moment the call connection signal transmitted to the fixed subscriber 400 arrives. Calling and incoming call are connected and the call is possible (step 540).

The above embodiments of the present invention are merely one embodiment of the technical idea of the present invention, and of course, other modifications may be made within the technical idea of the present invention.

The method for providing FA service to a fixed subscriber in the present invention mobile communication system having the above configuration and operation process has the following effects.

Not only providing FA services to conventional wireless subscribers, but also providing FA services to wired or fixed subscribers.

Claims (2)

A first step of the fixed subscriber requesting call establishment to the originating switching center; A second step of the originating switching center receiving the called subscriber information through the home location registration station; A third step of attempting to connect by sending call connection information to all members in the flexible alerting group based on the called subscriber information received through the home location registration station; And a fourth step of performing call setup only for the best arrival response among members in the FA group and canceling call setup for the remaining members. The method of claim 1, wherein the third step, A method for providing FA service to a fixed subscriber in a mobile communication system, characterized in that the originating switching center generates and executes a processor for call connection to as many subscribers as there are members of the FA group.